CN116866767A

CN116866767A - Earphone

Info

Publication number: CN116866767A
Application number: CN202310963949.0A
Authority: CN
Inventors: 付峻江
Original assignee: Shenzhen Voxtech Co Ltd
Current assignee: Shenzhen Voxtech Co Ltd
Priority date: 2021-10-22
Filing date: 2022-09-22
Publication date: 2023-10-10
Also published as: CN116193310A; CN116847236A; CN116095550A; CN116055934A; CN116847238A; CN116112837A; CN116847237A; CN116939422A; CN116866766A; CN116887108A; CN116095551A; CN116095549A; CN117082397A; CN117041793A; CN116866768A; CN116887109A; CN116887110A; CN116916210A

Abstract

The application mainly relates to an earphone, which comprises a support component and a core module connected with the support component, wherein the support component is used for supporting the core module to be worn to a wearing position, the core module comprises a core shell, a transduction device and a vibration panel, the transduction device is arranged in a containing cavity of the core shell, the vibration panel is connected with the transduction device and is used for transmitting mechanical vibration generated by the transduction device to a user, in a wearing state, the vibration panel is observed along the direction of a human coronal axis, the center of one side of the vibration panel, facing the wearing position, is closer to an external auditory meatus of an ear of the user than the center of one side of the core shell, facing the wearing position, of the core shell, namely, the vibration panel is arranged to be offset relative to the core shell, so that the core module vibrates at the wearing position to generate sound waves, the sound waves can be transmitted to a central nerve of the user in a shortest path, the transmission efficiency of the sound waves is higher, and the sound loss is less.

Description

Earphone

The application relates to a division application of China patent application with the name of 'an earphone', which is filed by China patent office, application number 2022111610405 and the name of 'an earphone' on the year 2022, month 09 and 22.

The parent application claims priority from the chinese patent office, application number 2021112326083, entitled "a headset", filed on day 22 of 10 of 2021, the relevant contents of which are incorporated herein by reference.

Technical Field

The application relates to the technical field of electronic equipment, in particular to an earphone.

Background

Headphones are widely used in daily life, and can be used with electronic devices such as mobile phones and computers, so as to provide users with hearing feast. According to the working principle of the earphone, the earphone can be generally divided into an air-guide earphone and a bone-guide earphone; according to the way that the user wears the earphone, the earphone can be generally divided into a headset, an ear-hanging earphone and an in-ear earphone; wired headphones and wireless headphones can also be generally classified according to the manner of interaction between the headphones and the electronic device.

Disclosure of Invention

In some embodiments, the earphone comprises a core module, the core module comprises a core shell, a transduction device, a first vibration transmission sheet, a vibration panel and a connecting piece, the transduction device is suspended in a containing cavity of the core shell through the first vibration transmission sheet, the core shell comprises an inner cylinder wall, a first end wall and a second end wall which are respectively connected with two ends of the inner cylinder wall, the first end wall and the second end wall are respectively positioned at two opposite sides of the transduction device in the vibration direction of the transduction device and are surrounded with the inner cylinder wall to form the containing cavity, the first end wall is provided with a mounting hole, the vibration panel is positioned outside the shell and is used for being contacted with skin of a user, one end of the connecting piece is connected with the vibration panel, and the other end of the connecting piece extends into the core shell through the mounting hole and is connected with the transduction device; the area of the vibration panel is larger than that of the mounting hole, and the area of the mounting hole is larger than that of the connecting piece when the vibration panel is observed along the vibration direction.

In some embodiments, the first vibration-transmitting sheet is located within the receiving cavity.

In some embodiments, the first vibration-transmitting tab is located on a side of the first end wall adjacent to the second end wall.

In some embodiments, the mounting hole has an area smaller than an area of the first vibration-transmitting sheet, as viewed in the vibration direction.

In some embodiments, the inner cylinder wall has a cross section of any one of a circle, an ellipse, and a polygon, as viewed in the vibration direction.

In some embodiments, the accommodating cavity is communicated with the outside of the earphone only through a channel, and the channel is a gap between the connecting piece and the wall surface of the mounting hole;

or, the accommodating cavity is communicated with the outside of the earphone only through a first channel and a second channel, the first channel is a gap between the connecting piece and the wall surface of the mounting hole, and the second channel is communicated with the outside of the earphone through an acoustic filter;

or, the accommodating cavity is communicated with the outside of the earphone only through a first channel and a second channel, the first channel is a gap between the connecting piece and the wall surface of the mounting hole, and the ratio of the opening area of the second channel to the opening area of the first channel is less than or equal to 10%.

In some embodiments, the young's modulus of the first end wall and the second end wall is greater than or equal to 2000Mpa, respectively.

In some embodiments, a ratio between an area of the mounting hole and an area of the first end wall, as viewed in the vibration direction, is less than or equal to 0.6.

In some embodiments, the gap between the connecting piece and the wall surface of the mounting hole and the accommodating cavity cooperate to form a helmholtz resonant cavity, and the peak resonant frequency of the helmholtz resonant cavity is less than or equal to 4kHz.

In some embodiments, the peak resonance frequency of the helmholtz resonator is less than or equal to 1kHz.

In some embodiments, a ratio between a difference between an area of the mounting hole and an area of the connection member and an area of the mounting hole is greater than 0 and less than or equal to 0.5, as viewed in the vibration direction.

In some embodiments, the opening shape of the mounting hole and the cross-sectional shape of the connecting piece are corresponding polygons, or the opening shape of the mounting hole and the cross-sectional shape of the connecting piece are corresponding circles;

wherein, the clearance between the connecting piece and the wall surface of the mounting hole is more than 0 and less than or equal to 2mm.

In some embodiments, the gap between the connector and the wall of the mounting hole is greater than or equal to 0.1mm and less than or equal to 1mm.

In some embodiments, the number of the connectors is one, and the connectors are connected to a central region of the vibration panel;

or the number of the connecting pieces is a plurality, and the connecting pieces are arranged at intervals around the central line of the vibration panel parallel to the vibration direction and are respectively connected with the transduction device through a corresponding mounting hole;

or the number of the connecting pieces is a plurality, one connecting piece is connected with the central area of the vibration panel, the rest connecting pieces are arranged at intervals around the connecting pieces positioned in the central area of the vibration panel, and the plurality of connecting pieces are respectively connected with the transduction device through a corresponding mounting hole.

In some embodiments, the young's modulus of the vibration panel is greater than or equal to 3000Mpa.

In some embodiments, the ratio between the absolute value of the difference between the stiffness of the vibration panel and the stiffness of the first end wall and the greater of the stiffness of the vibration panel and the stiffness of the first end wall is less than or equal to 0.4; and/or a ratio between an absolute value of a difference between the stiffness of the vibration panel and the stiffness of the second end wall and a greater one of the stiffness of the vibration panel and the stiffness of the second end wall is less than or equal to 0.4.

In some embodiments, the ratio between the area of the vibration panel and the area of the first end wall is between 0.3 and 1.6, as seen in the vibration direction.

In some embodiments, the thickness of the vibration panel in the vibration direction is between 0.3mm and 3 mm; and/or a gap between the vibration panel and the first end wall is between 0.5mm and 3 mm; and/or a spacing between a side of the first end wall facing away from the second end wall and a side of the second end wall facing away from the first end wall is between 6mm and 16 mm.

In some embodiments, a side of the vibration panel facing away from the transduction device comprises a skin contact area for contacting the skin of the user and an air conduction enhancement area at least partially not contacting the skin of the user, and the vibration panel drives air outside the earphone to vibrate through the air conduction enhancement area to form sound waves.

In some embodiments, in the worn state, the air conduction enhancement zone is at least partially directed toward an entrance of an external auditory canal of a user's ear to allow the sound waves to be directed toward the entrance of the external auditory canal.

In some embodiments, the air conduction enhancing region is at least partially inclined relative to the skin contact region and extends toward the transduction device, and the air conduction enhancing region is inclined at an angle of between 0 and 75 ° relative to the skin contact region;

And/or, the width of the orthographic projection of the air guide enhancement zone along the vibration direction is greater than or equal to 1mm.

In some embodiments, the vibration panel has a long axis direction and a short axis direction perpendicular to the vibration direction and orthogonal to each other, a dimension of the vibration panel in the long axis direction being greater than a dimension of the vibration panel in the short axis direction; in the wearing state, the long axis direction points to the top of the head of the user, and the short axis direction points to the entrance of the external auditory canal of the ear of the user.

In some embodiments, the vibration panel is provided in an oval or rounded rectangular or racetrack shape as viewed in the vibration direction.

In some embodiments, the cartridge housing further comprises a peripheral edge connected to an end of the cartridge housing proximate to the vibration panel, the peripheral edge surrounding the vibration panel; and in a non-wearing state, the surrounding edge is arranged at intervals with the vibration panel in the direction perpendicular to the vibration direction, and one side of the vibration panel, which is away from the transduction device, is at least partially protruded out of one side of the surrounding edge, which is away from the transduction device, in the vibration direction.

In some embodiments, the peripheral edge is provided with a communication hole for communicating a gap between the vibration panel and the deck case and an outside of the earphone.

In some embodiments, the number of the communication holes is a plurality, in the wearing state, the opening direction of at least one communication hole faces away from the top of the head of the user, and the included angle between the communication hole and the vertical axis of the user is between 0 and 10 degrees.

In some embodiments, a spacer is disposed between the vibration panel and the first end wall, and the spacer has a rockwell hardness less than a rockwell hardness of the first vibration-transmitting sheet.

In some embodiments, the cartridge module further comprises an acoustic filter in communication with the receiving cavity, the acoustic filter having a cut-off frequency of less than or equal to 5kHz.

In some embodiments, the first end wall includes a first sub-end wall and a second sub-end wall that are disposed at intervals in the vibration direction, and the mounting hole penetrates through the first sub-end wall and the second sub-end wall in the vibration direction, and the first sub-end wall and the second sub-end wall cooperate with the inner cylinder wall to form the acoustic filter.

In some embodiments, the gap between the first and second sub-end walls in the direction of vibration of the transduction device is between 0.5mm and 5 mm.

In some embodiments, the transduction device includes a support, a second vibration-transmitting sheet, a magnetic circuit, and a coil, where the support is connected to the core housing by the first vibration-transmitting sheet, the second vibration-transmitting sheet connects the support to the magnetic circuit, so as to suspend the magnetic circuit in the accommodating cavity, the coil is connected to the support, and extends into a magnetic gap of the magnetic circuit in the vibration direction, and the vibration panel is connected to the support.

In some embodiments, the magnetic circuit and/or the movement housing are provided with a helmholtz resonator in communication with the accommodation chamber.

In some embodiments, the frequency response curve of the air-guide sound output to the outside of the earphone through the mounting hole has a resonance peak, and the helmholtz resonator is configured to attenuate the intensity of the resonance peak; the peak resonance frequency of the resonance peak is between 500Hz and 4 kHz.

In some embodiments, the helmholtz resonator is configured to attenuate a vibration intensity of a frequency response curve of an air guide sound output to the outside of the earphone through the mounting hole within a preset frequency band, and a difference between a peak value of the vibration intensity when an opening of the helmholtz resonator communicating with the accommodating cavity is in an open state and a peak value of the vibration intensity when the opening of the helmholtz resonator communicating with the accommodating cavity is in a closed state is greater than or equal to 3dB.

In some embodiments, the bracket is provided with a communication hole extending in the vibration direction;

and/or the magnetic circuit system comprises a magnetic conduction cover and a magnet connected with the bottom of the magnetic conduction cover, wherein the magnet is connected with the central area of the second vibration transmission sheet and is arranged at intervals with the magnetic conduction cover in the direction perpendicular to the vibration direction so as to form the magnetic gap, the coil stretches into the space between the magnet and the magnetic conduction cover, and the magnetic conduction cover is provided with a communication hole for communicating the magnetic gap and the external space of the magnetic circuit system.

In some embodiments, the cartridge housing has a volume of less than or equal to 3cm ³ 。

In some embodiments, the headset further comprises a head beam assembly coupled to the deck module, the head beam assembly configured to bypass the crown of the user and allow the deck module to contact the cheek of the user through the vibration panel.

In some embodiments, the earphone comprises a core module, the core module comprises a core shell, a transduction device, a vibration panel and a connecting piece, the transduction device is arranged in a containing cavity of the core shell, the core shell is provided with a mounting hole, the vibration panel is positioned outside the core shell and is used for being in contact with the skin of a user, one end of the connecting piece is connected with the vibration panel, and the other end of the connecting piece extends into the core shell through the mounting hole and is connected with the transduction device; the area of the vibration panel is larger than that of the mounting hole, and the area of the mounting hole is larger than that of the connecting piece when the vibration panel is observed along the vibration direction;

the accommodating cavity is communicated with the outside of the earphone only through a channel, and the channel is a gap between the connecting piece and the wall surface of the mounting hole;

Or, the accommodating cavity is communicated with the outside of the earphone only through a first channel and a second channel, the first channel is a gap between the connecting piece and the wall surface of the mounting hole, and the second channel is communicated with the outside of the earphone through an acoustic filter.

In some embodiments, the transduction device includes a bracket, a second vibration-transmitting sheet, a magnetic circuit, and a coil, the bracket is connected to the movement housing through the first vibration-transmitting sheet, the second vibration-transmitting sheet connects the bracket and the magnetic circuit to suspend the magnetic circuit in the accommodating cavity, the coil is connected to the bracket and extends into a magnetic gap of the magnetic circuit along the vibration direction, and the vibration panel is connected to the bracket; and the area of the mounting hole is smaller than that of the first vibration transmission sheet when observed along the vibration direction.

In some embodiments, the earphone comprises a core module, wherein the core module comprises a core shell, a transduction device, a first vibration transmission sheet, a vibration panel and a connecting piece, the transduction device is suspended in a containing cavity of the core shell through the first vibration transmission sheet, a mounting hole is arranged on the core shell, and the core shell surrounds the containing cavity which is formed to be communicated with the outside only through the mounting hole; the vibration panel is positioned outside the machine core shell and is used for contacting with the skin of a user, one end of the connecting piece is connected with the vibration panel, and the other end of the connecting piece extends into the machine core shell through the mounting hole and is connected with the transduction device; wherein, the clearance between the connecting piece and the wall surface of the mounting hole is more than 0 and less than or equal to 2mm.

In the earphone provided by the application, although mechanical vibration generated by the transducer of the core module is partially transmitted to the core shell through the first vibration transmitting sheet, on the basis of the sound dipole principle, leakage sounds generated by two end walls of the core shell in the vibration direction of the transducer are eliminated in a far-field opposite phase, so that the earphone is beneficial to reducing the leakage sounds, and less or even no leakage sound holes are specially formed in the core shell as in the related art, and the waterproof and dustproof performances of the earphone are further improved.

In some embodiments, the earphone comprises a support assembly and a core module connected with the support assembly, wherein the support assembly is used for supporting the core module to be worn in a wearing position, the core module comprises a core shell, a transduction device, a first vibration transmission sheet and a vibration panel, the transduction device is suspended in a containing cavity of the core shell through the first vibration transmission sheet, and the vibration panel is connected with the transduction device and used for transmitting mechanical vibration generated by the transduction device to a user; wherein the mass of the movement shell is greater than or equal to 1g, and the rigidity of the first vibration transmission sheet is less than or equal to 7000N/m.

In some embodiments, the mass of the cartridge housing is greater than or equal to 1.2g and the stiffness of the first vibration-transmitting plate is less than or equal to 5000N/m.

In some embodiments, the ratio between the mass of the cartridge housing and the stiffness of the first vibration-transmitting plate is greater than or equal to 0.15s ² 。

In some embodiments, the ratio between the mass of the cartridge housing and the stiffness of the first vibration-transmitting plate is greater than or equal to 0.2s ² 。

In some embodiments, the transduction device includes a support, a second vibration-transmitting sheet, a magnetic circuit, and a coil, where the support is connected to the core housing by the first vibration-transmitting sheet, the second vibration-transmitting sheet connects the support to the magnetic circuit, so as to suspend the magnetic circuit in the accommodating cavity, the coil is connected to the support, and extends into a magnetic gap of the magnetic circuit along a vibration direction of the transduction device, and the vibration panel is connected to the support.

In some embodiments, the stiffness of the second vibration-transmitting sheet is greater than or equal to 1000N/m.

In some embodiments, in the non-wearing state, the frequency response curve of the vibration panel has a resonance valley generated by the first vibration transmitting piece, and a peak resonance frequency of the resonance valley is less than or equal to 400Hz.

In some embodiments, the frequency response curve has at least one resonance peak generated by the first vibration transmitting plate and the second vibration transmitting plate together in a frequency band range of 200Hz to 2 kHz.

In some embodiments, the at least one resonant peak includes a first resonant peak having a peak resonant frequency between 200Hz and 400Hz and a second resonant peak having a peak resonant frequency greater than the peak resonant frequency of the first resonant peak.

In some embodiments, when the stiffness of the first vibration-transmitting sheet is changed, the absolute value of the shift of the peak resonance frequency of the second resonance peak is greater than the absolute value of the shift of the peak resonance frequency of the first resonance peak; when the rigidity of the second vibration transmission sheet is changed, the absolute value of the offset of the peak resonance frequency of the first resonance peak is larger than the absolute value of the offset of the peak resonance frequency of the second resonance peak.

In some embodiments, the movement module further includes a connecting piece, the movement housing includes an inner cylinder wall, and a first end wall and a second end wall connected to two ends of the inner cylinder wall, where the first end wall and the second end wall are located at two opposite sides of the transduction device in a vibration direction of the transduction device, and enclose with the inner cylinder wall to form the accommodating cavity, the first end wall is provided with a mounting hole, the vibration panel is located outside the movement housing, one end of the connecting piece is connected with the vibration panel, and the other end of the connecting piece extends into the movement housing via the mounting hole and is connected with the transduction device; the area of the vibration panel is larger than that of the mounting hole, and the area of the mounting hole is larger than that of the connecting piece when the vibration panel is observed along the vibration direction.

In some embodiments, the earphone includes a deck module including a deck housing, a transduction device, a first vibration-transmitting tab, and a vibration panel, the transduction device passing through the first vibration-transmitting tabThe vibration plate is suspended in the accommodating cavity of the core shell, and the vibration panel is connected with the transduction device and used for transmitting mechanical vibration generated by the transduction device to a user; wherein the ratio between the mass of the core shell and the rigidity of the first vibration transmission sheet is greater than or equal to 0.15s ² 。

In the earphone provided by the application, although mechanical vibration generated by the transducer of the core module is partially transmitted to the core shell through the first vibration transmission sheet, the peak frequency of the resonance valley on the frequency response curve of vibration of the vibration panel is shifted to a frequency band with lower frequency by setting the mass of the core shell to be more than or equal to 1g and the rigidity of the first vibration transmission sheet to be less than or equal to 7000N/m, so that the intermediate frequency loss of the earphone is improved, and the acoustic expressive force of the earphone is improved.

In some embodiments, the earphone comprises a support assembly and a core module connected with the support assembly, wherein the support assembly is used for supporting the core module to be worn in a wearing position, the core module comprises a core shell, a transduction device, a first vibration transmission sheet and a vibration panel, the transduction device is suspended in a containing cavity of the core shell through the first vibration transmission sheet, and the vibration panel is connected with the transduction device and used for transmitting mechanical vibration generated by the transduction device to a user; wherein the mass of the core shell is less than or equal to 0.5g, and the rigidity of the first vibration transmission sheet is more than or equal to 80000N/m.

In some embodiments, a peripheral region of the second vibration-transmitting piece is connected to the bracket, and a central region of the second vibration-transmitting piece is connected to the magnetic circuit system.

In some embodiments, in the non-wearing state, the frequency response curve of the vibration panel has a resonance valley generated by the first vibration transmitting piece, and a peak resonance frequency of the resonance valley is greater than or equal to 2kHz.

In some embodiments, the frequency response curve has a first resonant peak and a second resonant peak that are collectively generated by the first vibration transmitting sheet and the second vibration transmitting sheet, the first resonant peak having a peak resonant frequency that is less than a peak resonant frequency of the resonant valley, and the second resonant peak having a peak resonant frequency that is greater than the peak resonant frequency of the resonant valley.

In some embodiments, the peak resonance frequency of the first resonance peak is between 200Hz and 400 Hz.

In some embodiments, the accommodating cavity is communicated with the outside of the earphone through a channel, the channel is a gap between the connecting piece and the wall surface of the mounting hole, and the movement module further comprises a sealing film, and the sealing film seals the channel.

In some embodiments, the sealing film includes a first connection portion, a pleated portion, and a second connection portion integrally connected, the pleated portion forming a recessed region between the first connection portion and the second connection portion, the first connection portion being connected to the first end wall, and the second connection portion being connected to the connection member or the vibration panel.

In the earphone provided by the application, although mechanical vibration generated by the transducer of the core module is partially transmitted to the core shell through the first vibration transmission sheet, the peak frequency of the resonance valley on the frequency response curve of vibration of the vibration panel is shifted to a frequency band with higher frequency by setting the mass of the core shell to be less than or equal to 0.5g and the rigidity of the first vibration transmission sheet to be greater than or equal to 80000N/m, which is beneficial to improving the intermediate frequency loss of the earphone, thereby improving the acoustic expressive force of the earphone.

In some embodiments, the earphone comprises a support assembly and a core module connected with the support assembly, the support assembly is used for supporting the core module to be worn in a wearing position, the core module comprises a core shell, a transduction device, a first vibration transmission sheet and a vibration panel, the transduction device is suspended in a containing cavity of the core shell through the first vibration transmission sheet, and the vibration panel is connected with the support and used for transmitting mechanical vibration generated by the transduction device to a user; the deck module is arranged so that a frequency response curve of vibration of the vibration panel in a non-wearing state has no effective resonance valley in a frequency range from 400Hz to 2 kHz; the frequency response curve is used for representing the change relation between the vibration intensity and the frequency of the vibration panel, the effective resonance valley is defined as two intersection points of a reference line segment parallel to the transverse axis of the frequency response curve and the frequency response curve, the peak resonance intensity of the effective resonance valley is subtracted by the intensity corresponding to the reference line segment, the difference between the frequencies corresponding to two end points of the reference line segment is smaller than or equal to 4 octaves, and the peak resonance intensity of the effective resonance valley is equal to 6 dB.

In some embodiments, the mass of the cartridge case and/or the stiffness of the first vibration-transmitting sheet are arranged such that the frequency response curve is free of the effective resonance valley in the frequency band range of 400Hz to 2 kHz.

In some embodiments, the mass of the cartridge case and/or the stiffness of the first vibration-transmitting sheet are arranged such that the frequency response curve has the effective resonance valley in the frequency band range of 200Hz to 400 Hz.

In some embodiments, the mass of the cartridge housing is greater than or equal to 1g and the stiffness of the first vibration-transmitting plate is less than or equal to 7000N/m.

In some embodiments, the frequency response curve has two resonance peaks co-generated by the first vibration transmitting plate and the second vibration transmitting plate in a frequency band range of 400Hz to 2 kHz.

In some embodiments, the mass of the cartridge housing and/or the stiffness of the first vibration-transmitting plate is arranged such that the frequency response curve has the effective resonance valley in a frequency band range of 2kHz to 20 kHz.

In some embodiments, the mass of the cartridge housing is less than or equal to 0.5g and the stiffness of the first vibration-transmitting plate is greater than or equal to 80000N/m.

In some embodiments, the mass of the cartridge case and/or the stiffness of the first vibration-transmitting sheet are arranged such that the frequency response curve is free of the effective resonance valley in the frequency band range of 200Hz to 2 kHz.

In some embodiments, the mass of the cartridge housing is greater than or equal to 1g, and the stiffness of the first vibration-transmitting plate is less than or equal to 2500N/m;

or the mass of the movement shell is smaller than or equal to 0.5g, and the rigidity of the first vibration transmission sheet is larger than or equal to 80000N/m.

In some embodiments, the mass of the cartridge case and/or the stiffness of the first vibration-transmitting sheet are arranged such that the frequency response curve is free of the effective resonance valley in the frequency band range of 200Hz to 4 kHz.

Or, the mass of the core shell is less than or equal to 0.5g, and the rigidity of the first vibration transmission sheet is more than or equal to 160000N/m.

In some embodiments, the mass of the cartridge housing is greater than or equal to 1g, the stiffness of the first vibration-transmitting sheet is less than or equal to 2500N/m, and the stiffness of the second vibration-transmitting sheet is less than or equal to 100000N/m;

or the mass of the movement shell is smaller than or equal to 0.5g, the rigidity of the first vibration transmission sheet is larger than or equal to 80000N/m, and the rigidity of the second vibration transmission sheet is between 1000N/m and 500000N/m.

In some embodiments, the non-worn state is defined as the headset not being worn to the head of the user, the support assembly being fixed and the movement module being cantilevered relative to the support assembly.

In the earphone provided by the application, the movement module is arranged so that the frequency response curve of the vibration panel vibration in the non-wearing state has no effective resonance valley in the frequency range from 400Hz to 2kHz, which is beneficial to improving the intermediate frequency loss of the earphone, thereby improving the acoustic expressive force of the earphone.

In some embodiments, the earphone comprises a support assembly and a core module connected with the support assembly, the support assembly is used for supporting the core module to be worn in a wearing position, the core module comprises a core shell, a transduction device, a first vibration transmission sheet and a vibration panel, the transduction device is suspended in a containing cavity of the core shell through the first vibration transmission sheet and comprises a bracket, a second vibration transmission sheet, a magnetic circuit system and a coil, the bracket is connected with the core shell through the first vibration transmission sheet, the second vibration transmission sheet is connected with the bracket and the magnetic circuit system to suspend the magnetic circuit system in the containing cavity, the coil is connected with the bracket and stretches into a magnetic gap of the magnetic circuit system along the vibration direction of the transduction device, and the vibration panel is connected with the bracket and is used for transmitting mechanical vibration generated by the transduction device to a user; in a non-wearing state, the frequency response curve of vibration of the vibration panel is provided with a first resonance peak and a second resonance peak which are generated by the first vibration transmission sheet and the second vibration transmission sheet together, the peak resonance frequency of the first resonance peak is smaller than that of the second resonance peak, and no effective resonance valley exists between the first resonance peak and the second resonance peak; the frequency response curve is used for representing the change relation between the vibration intensity and the frequency of the vibration panel, the effective resonance valley is defined as two intersection points of a reference line segment parallel to the transverse axis of the frequency response curve and the frequency response curve, the peak resonance intensity of the effective resonance valley is subtracted by the intensity corresponding to the reference line segment, the difference between the frequencies corresponding to two end points of the reference line segment is smaller than or equal to 4 octaves, and the peak resonance intensity of the effective resonance valley is equal to 6 dB.

In some embodiments, the mass of the cartridge housing is greater than or equal to 1g, the stiffness of the first vibration-transmitting plate is less than or equal to 7000N/m, and the stiffness of the second vibration-transmitting plate is greater than or equal to 1000N/m.

In some embodiments, the mass of the cartridge housing is greater than or equal to 1.2g, the stiffness of the first vibration-transmitting plate is less than or equal to 5000N/m, and the stiffness of the second vibration-transmitting plate is greater than or equal to 3000N/m.

In some embodiments, the stiffness of the second vibration-transmitting sheet is greater than the stiffness of the first vibration-transmitting sheet.

In some embodiments, the peak resonance frequency of the first resonance peak is between 80Hz and 400Hz and the peak resonance frequency of the second resonance peak is between 100Hz and 2 kHz.

In the earphone provided by the application, the effective resonance valley does not exist between the two resonance peaks generated by the first vibration transmission sheet and the second vibration transmission sheet on the frequency response curve of vibration of the vibration panel, so that the flatness of the frequency response curve between the two resonance peaks is improved, the problem that a certain frequency point or frequency band is missing between the two resonance peaks is avoided, and the acoustic expressive force of the earphone is improved.

In some embodiments, the earphone comprises a support assembly and a core module connected with the support assembly, the support assembly is used for supporting the core module to be worn in a wearing position, the core module comprises a core shell, a transduction device, a first vibration transmission sheet and a vibration panel, the transduction device is suspended in a containing cavity of the core shell through the first vibration transmission sheet and comprises a bracket, a second vibration transmission sheet, a magnetic circuit system and a coil, the bracket is connected with the core shell through the first vibration transmission sheet, the second vibration transmission sheet is connected with the bracket and the magnetic circuit system to suspend the magnetic circuit system in the containing cavity, the coil is connected with the bracket and stretches into a magnetic gap of the magnetic circuit system along the vibration direction of the transduction device, and the vibration panel is connected with the bracket and is used for transmitting mechanical vibration generated by the transduction device to a user; in a non-wearing state, the frequency response curve of the vibration panel vibration is provided with a resonance valley generated by the first vibration transmission sheet, and a first resonance peak and a second resonance peak which are jointly generated by the first vibration transmission sheet and the second vibration transmission sheet, wherein the peak resonance frequency of the resonance valley is smaller than the peak resonance frequency of the first resonance peak, and the peak resonance frequency of the first resonance peak is smaller than the peak resonance frequency of the second resonance peak.

In some embodiments, the peak resonant frequency of the resonant valley is greater than or equal to 400Hz.

In some embodiments, the mass of the cartridge housing is less than or equal to 1g, the stiffness of the first vibration-transmitting plate is greater than or equal to 7000N/m, and the stiffness of the second vibration-transmitting plate is greater than or equal to 1000N/m.

In some embodiments, the second resonant peak has a peak resonant frequency less than or equal to 1kHz.

In some embodiments, the mass of the cartridge case is less than or equal to 1g, the stiffness of the first vibration-transmitting sheet is greater than or equal to 7000N/m, and the stiffness of the second vibration-transmitting sheet is between 20000N/m and 50000N/m.

In this way, in the earphone provided by the application, although the frequency response curve of the vibration panel has a resonance valley generated by the first vibration transmitting sheet, the peak resonance frequency of the resonance valley is smaller than the peak resonance frequency of two resonance peaks generated by the first vibration transmitting sheet and the second vibration transmitting sheet on the frequency response curve, so that the problem that a certain frequency point or a frequency band is missing between the two resonance peaks of the frequency response curve is avoided, the flatness of the frequency response curve between the two resonance peaks is increased, and the shift of the resonance valley to the frequency band with lower frequency is facilitated, thereby improving the acoustic expression of the earphone.

In some embodiments, the earphone comprises a support assembly and a core module connected with the support assembly, the support assembly is used for supporting the core module to be worn in a wearing position, the core module comprises a core shell, a transduction device, a first vibration transmission sheet and a vibration panel, the transduction device is suspended in a containing cavity of the core shell through the first vibration transmission sheet and comprises a bracket, a second vibration transmission sheet, a magnetic circuit system and a coil, the bracket is connected with the core shell through the first vibration transmission sheet, the second vibration transmission sheet is connected with the bracket and the magnetic circuit system to suspend the magnetic circuit system in the containing cavity, the coil is connected with the bracket and stretches into a magnetic gap of the magnetic circuit system along the vibration direction of the transduction device, and the vibration panel is connected with the bracket and is used for transmitting mechanical vibration generated by the transduction device to a user; in a non-wearing state, the frequency response curve of vibration of the vibration panel has a resonance peak which is strongly related to the rigidity of the support, the rigidity of the support is more than or equal to 100000N/m, and the peak resonance frequency of the resonance peak is more than or equal to 4kHz.

In some embodiments, the material of the bracket is any one of polycarbonate, nylon and plastic titanium;

or the bracket comprises a matrix and a reinforcement body, wherein the matrix is made of any one of polycarbonate, nylon and plastic titanium, the reinforcement body is glass fiber or carbon fiber doped in the matrix, or the reinforcement body is aluminum alloy or stainless steel molded on the matrix through a beer sleeving process.

In some embodiments, the ratio between the average thickness of the scaffold and the area of the scaffold is greater than or equal to 0.01mm ^-1 Wherein the area of the support is defined as the area of the orthographic projection of the support in the vibration direction and the average thickness of the support is defined as the volume of the support divided by the area of the support.

In some embodiments, the mass of the movement shell and/or the stiffness of the first vibration-transmitting piece are/is set such that the frequency response curve has no effective resonance valley in a frequency range from 400Hz to 2kHz, the effective resonance valley is defined as a reference line segment parallel to a transverse axis of the frequency response curve and having two intersecting points with the frequency response curve, the peak resonance intensity of the effective resonance valley subtracted by the intensity corresponding to the reference line segment is equal to 6dB, and the difference between frequencies corresponding to two end points of the reference line segment is less than or equal to 4 octaves.

In this way, in the earphone provided by the application, although the frequency response curve of the vibration panel has a resonance peak which is strongly related to the rigidity of the support, the rigidity of the support is greater than or equal to 100000N/m, so that the peak resonance frequency of the resonance peak is greater than or equal to 4kHz, and further, the middle-high frequency band and above frequency band of the frequency response curve are as flat as possible, which is beneficial to improving the acoustic expressive force of the earphone.

In some embodiments, the headset includes a head beam assembly for bypassing a user and a deck module coupled to the head beam assemblyThe head top is provided with a movement module which is contacted with the cheeks of a user, and the movement module comprises a transduction device and transmits mechanical vibration generated by the transduction device in a bone conduction mode; wherein the head beam assembly applies a pressing force between 0.4N and 0.8N to press the movement module on the cheek of the user, and the contact area between the movement module and the cheek of the user is 400mm ² And 600mm ² Between them.

In some embodiments, the cartridge module further comprises a cartridge housing, a first vibration-transmitting sheet, and a vibration panel, wherein the cartridge housing is connected with the head beam assembly, the transduction device is suspended in the accommodating cavity of the cartridge housing through the first vibration-transmitting sheet, and the vibration panel is connected with the transduction device and is used for contacting the skin of a user; the pressing force of the vibration panel to the cheeks of the user is smaller than that of the head beam assembly to press the movement module to the cheeks of the user, and the contact area of the vibration panel and the cheeks of the user is smaller than that of the movement module and the cheeks of the user.

In some embodiments, the pressing force of the vibration panel to the cheek of the user is between 0.1N and 0.7N, and the contact area with the cheek of the user is 180mm ² And 300mm ² Between them.

In some embodiments, the cartridge module further comprises a peripheral edge connected to an end of the cartridge housing near the vibration panel, the peripheral edge surrounding the vibration panel and adapted to contact a cheek of a user; and in a non-wearing state, the surrounding edge is arranged at intervals with the vibration panel in a direction perpendicular to the vibration direction of the transduction device, and one side of the vibration panel, which is away from the transduction device, is at least partially protruded out of one side of the surrounding edge, which is away from the transduction device, in the vibration direction.

In some embodiments, a side of the vibration panel facing away from the transduction device includes a skin contact area for contacting skin of a user and an edge area connected to the skin contact area, the edge area being located at a periphery of the skin contact area and spaced apart from the skin contact area in the vibration direction, the peripheral edge including a connection portion connected to the cartridge case and a limit portion connected to the connection portion, the limit portion being located at a side of the vibration panel facing away from the transduction device; the limiting part is overlapped with the edge area and staggered with the skin contact area, and in a non-wearing state, the skin contact area protrudes out of one side of the limiting part, which is away from the transduction device, in the vibration direction.

In some embodiments, the side of the vibration panel facing away from the transduction device further comprises an air conduction enhancement zone connected between the skin contact zone and the edge zone, at least part of the air conduction enhancement zone is not contacted with the skin of the user, and the vibration panel drives air outside the earphone to vibrate through the air conduction enhancement zone to form sound waves.

In some embodiments, the air conduction enhancement zone is at least partially inclined relative to the skin contact zone, and the angle of inclination of the air conduction enhancement zone relative to the skin contact zone is between 0 and 75 °;

In some embodiments, the peripheral edge is provided with a communication hole, and the communication hole is used for communicating a gap between the vibration panel and the movement shell and the outside of the earphone; the number of the communication holes is multiple, the opening direction of at least one communication hole deviates from the top of the head of the user, and the included angle between the communication hole and the vertical axis of the user is between 0 and 10 degrees.

In the earphone provided by the application, the head beam component is not only arranged to apply the pressing force between 0.4N and 0.8N to press the core module on the cheek of the user, so that the earphone is not unstable in wearing due to the too small pressing force and is not uncomfortable to wear due to the fact that mechanical vibration generated by the core module is transmitted to the user, and the contact area between the core module and the cheek of the user is 400mm ² And 600mm ² The movement module is not uncomfortable to wear due to too small contact area and poor in fitting degree with the cheeks of the user due to too large contact area, so that the user can obtain excellent wearing stability, comfort and good tone quality when using the earphone.

In some embodiments, the earphone comprises a head beam assembly and a core module, the head beam assembly comprises an arc head beam part and an adapter, the arc head beam part is used for bypassing the head top of a user, two ends of the adapter are respectively connected with the arc head beam part and the core module and allow the core module to approach or separate from the arc head beam part in the extending direction of the head beam assembly, and the core module comprises a transduction device and transmits mechanical vibration generated by the transduction device in a bone conduction mode; wherein, the head beam assembly applies a pressing force between 0.4N and 0.8N to press the movement module on the cheek of the user.

In some embodiments, the adapter and the movement module are disposed at two ends of the arc-shaped head beam member, the head beam assembly provides a first compression force for the movement module in a first use state and provides a second compression force for the movement module in a second use state, and an absolute value of a difference between the second compression force and the first compression force is between 0 and 0.1N;

the first use state is defined as a use state that each adapter piece has a first extension amount relative to the arc-shaped head beam piece, a first interval is formed between the two movement modules, the second use state is defined as a use state that each adapter piece has a second extension amount relative to the arc-shaped head beam piece, a second interval is formed between the two movement modules, the second extension amount is larger than the first extension amount, and the second interval is larger than the first interval.

In some embodiments, the first extension is a minimum when the deck module is closest to the arcuate head beam; and when the movement module is farthest from the arc-shaped head beam part, the second extension amount is the maximum value.

In some embodiments, when each movement module is closest to or farthest from the arched head beam, the adaptor at each end of the arched head beam is symmetrically disposed with respect to a first reference plane, the second reference plane crosses a line between the ends of the arched head beam and perpendicularly intersects the first reference plane, the arched head beam is in a natural state, and the arched head beam and the adaptor are projected onto a second reference plane, when the movement module is closest to the arched head beam, the adaptor is used for connecting a free end of the movement module, the free end has a first position, when the movement module is farthest from the arched head beam, the free end has a second position, a line between the first position and the second position has a first projection component in a first reference direction parallel to a line between the ends of the arched head beam, and a second projection component in a second reference direction perpendicular to a line between the ends of the arched head beam, and the ratio of the second projection component to the first projection component is greater than or equal to 2;

and/or the ratio between the cross-sectional bending stiffness of the adapter and the cross-sectional bending stiffness of the arched head beam is less than or equal to 0.9.

In some embodiments, the earphone further comprises an adapter housing rotatably connected with an end of the adapter away from the arc-shaped beam member, the core module further comprises a core housing rotatably connected with the adapter housing, the transduction device is disposed in a receiving cavity of the core housing, and an axis of rotation of the core housing relative to the adapter housing intersects with an axis of rotation of the adapter housing relative to the adapter.

In some embodiments, the adapter housing is provided with a rotating shaft cavity, the adapter is inserted into the rotating shaft cavity along the axial direction of the rotating shaft cavity, the earphone further comprises a locking piece, the locking piece is used for limiting the adapter along the axial direction of the rotating shaft cavity, so that the adapter is kept in the rotating shaft cavity, a limiting groove is formed in the peripheral wall of the adapter, a limiting block is arranged on the inner peripheral wall of the rotating shaft cavity, and the limiting block is embedded into the limiting groove to limit the rotating angle of the adapter relative to the rotating shaft cavity.

In some embodiments, the free end of the adaptor is provided with a clamping groove, after the adaptor is inserted into the rotating shaft cavity from one end of the rotating shaft cavity, the clamping groove is exposed from the other end of the rotating shaft cavity, the locking piece is clamped in the clamping groove, and the radial dimension of the locking piece is larger than that of the rotating shaft cavity.

In some embodiments, the rotation angle is between 5 ° and 15 °.

In some embodiments, the earphone further comprises a battery and a main board coupled with the transducer, the adapter housing comprises a middle board rotationally connected with the adapter and a shell connected with the middle board, the battery or the main board is arranged between the shell and the middle board, and the movement housing is rotationally connected with the adapter housing and is positioned on one side of the middle board away from the shell.

In some embodiments, the cartridge module further comprises a first vibration-transmitting sheet and a vibration panel, the transduction device is suspended in the accommodation cavity of the cartridge case by the first vibration-transmitting sheet, and the vibration panel is connected with the transduction device and is used for contacting with the skin of the user; the pressing force of the vibration panel to the cheeks of the user is smaller than that of the head beam assembly to press the movement module to the cheeks of the user, and the contact area of the vibration panel and the cheeks of the user is smaller than that of the movement module and the cheeks of the user.

In the earphone provided by the application, the head beam assembly is arranged to be adjustable in arc length, so that the earphone can be worn by users with heads of different sizes, and when the users with heads of different sizes wear the earphone, the head beam assembly applies the pressing force between 0.4N and 0.8N to press the movement module on the cheeks of the users, so that the earphone is not unstable to wear due to the too small pressing force, mechanical vibration generated by the movement module is transmitted to the users, and wearing discomfort due to the too large pressing force is not caused, and the users can obtain excellent wearing stability and comfort and good sound quality when using the earphone.

In some embodiments, the earphone includes a head beam assembly, an adapter housing rotatably connected with the head beam assembly, a movement module connected with the adapter housing, and a battery and a main board coupled with the movement module, the head beam assembly is used for bypassing a top of a user's head and enabling the movement module to be in contact with a cheek of the user, the adapter housing includes a middle plate rotatably connected with the head beam assembly and a housing connected with the middle plate, the battery or the main board is disposed between the housing and the middle plate, the movement module includes a movement housing rotatably connected with the adapter housing and a transducer disposed in a receiving cavity of the movement housing, and the movement housing and the housing are respectively disposed on opposite sides of the middle plate.

In some embodiments, the cartridge housing rotates about a first axis relative to the adapter housing and the adapter housing rotates about a second axis relative to the head beam assembly, the first axis intersecting the second axis on a reference plane perpendicular to a direction of vibration of the transducer device.

In some embodiments, the cartridge module further comprises a first vibration transmitting piece and a vibration panel, the transduction device is suspended in the accommodating cavity of the cartridge housing by the first vibration transmitting piece, and the vibration panel is connected with the transduction device and is used for contacting the skin of the user.

In some embodiments, the movement module further includes a connecting piece, the movement housing includes an inner cylinder wall connected to the adapter housing, and a first end wall and a second end wall connected to two ends of the inner cylinder wall, where the first end wall and the second end wall are located at opposite sides of the transduction device in a vibration direction of the transduction device, and form the accommodating cavity around the inner cylinder wall, the first end wall is provided with a mounting hole, the vibration panel is located outside the movement housing, one end of the connecting piece is connected to the vibration panel, and the other end of the connecting piece extends into the movement housing via the mounting hole and is connected to the transduction device; the area of the vibration panel is larger than that of the mounting hole, and the area of the mounting hole is larger than that of the connecting piece when the vibration panel is observed along the vibration direction.

In some embodiments, a side of the vibration panel facing away from the transduction device includes a skin contact area for contacting skin of a user and an edge area connected to the skin contact area, the edge area being located at a periphery of the skin contact area and being spaced apart from the skin contact area in a vibration direction of the transduction device, the movement module further includes a peripheral edge connected to an end of the inner cylinder wall facing away from the second end wall, the peripheral edge including a connection portion connected to the inner cylinder wall and a limit portion connected to the connection portion, the limit portion being located on a side of the vibration panel facing away from the transduction device; the limiting part is overlapped with the edge area and staggered with the skin contact area, and in a non-wearing state, the skin contact area protrudes out of one side of the limiting part, which is away from the transduction device, in the vibration direction.

In some embodiments, the head beam assembly comprises an arc head beam and an adapter, the arc head beam is used for bypassing the head top of a user, the adapter comprises a first connecting section, a middle transition section and a second connecting section which are sequentially connected, the first connecting section is connected with the arc head beam, the second connecting section is rotationally connected with the middle plate, and the first connecting section and the second connecting section are respectively bent and reversely extend relative to the middle transition section so as to be in a wearing state and observed along the direction of a crown axis of a human body, the arc head beam is positioned above an ear of the user, and the movement module is positioned at the front side of the ear of the user.

In some embodiments, the first connection section has a bend angle relative to the intermediate transition section that is greater than or equal to 90 ° and less than 180 °; and/or, the bending angle of the second connecting section relative to the middle transition section is greater than or equal to 90 degrees and less than 180 degrees.

In some embodiments, in the wearing state, and as viewed along the direction of the coronal axis of the human body, the first connecting section is parallel to the second connecting section, and the distance between the first connecting section and the second connecting section is between 20mm and 30 mm.

In the earphone provided by the application, the movement module is rotationally connected with the head beam assembly through the switching shell, so that the fitting degree of the movement module and the cheeks of a user is better, and the battery or the main board is arranged in the switching shell and is separated from the movement module, so that the structure of the earphone is more compact, and all structural components are not interfered with each other.

In some embodiments, the earphone includes a switch shell and a core module, the core module includes a core shell rotationally connected with the switch shell, a transducer disposed in a receiving cavity of the core shell, and a surrounding edge connected with one end of the core shell away from the switch shell, the surrounding edge includes a connection portion connected with the core shell and a flange portion connected with the connection portion, the flange portion is located at a periphery of the core shell and overlaps with the switch shell when viewed along a vibration direction of the transducer, and in a non-wearing state, a gap between the flange portion and the switch shell in the vibration direction is gradually increased along a reference direction defined as a direction perpendicular to the vibration direction and a direction in which the axis is located and away from the axis.

In some embodiments, the maximum clearance of the flange portion and the adapter housing in the vibration direction is between 2mm and 5 mm.

In some embodiments, the flange portion is disposed in an arc shape toward one side of the adapter housing, as viewed in a direction in which the axis is located.

In some embodiments, the radius of the arc of the flange portion toward the adapter housing side is greater than or equal to 50mm.

In some embodiments, the movement module further includes a first vibration-transmitting sheet and a vibration panel, the transduction device is suspended in the accommodation cavity of the movement case by the first vibration-transmitting sheet, the vibration panel is connected to the transduction device and is used for contacting the skin of the user, and the surrounding edge surrounds the vibration panel; and in a non-wearing state, the surrounding edge is arranged at intervals with the vibration panel in the direction perpendicular to the vibration direction, and one side of the vibration panel, which is away from the transduction device, is at least partially protruded out of one side of the surrounding edge, which is away from the transduction device, in the vibration direction.

In some embodiments, a side of the vibration panel facing away from the transduction device includes a skin contact area for contacting the skin of a user and an edge area connected to the skin contact area, the edge area being located at a periphery of the skin contact area and spaced apart from the skin contact area in the vibration direction, the peripheral edge further including a limiting portion connected to the connecting portion, the limiting portion being located at a side of the vibration panel facing away from the transduction device; the limiting part is overlapped with the edge area and staggered with the skin contact area, and in a non-wearing state, the skin contact area protrudes out of one side of the limiting part, which is away from the transduction device, in the vibration direction.

In some embodiments, the earphone further includes a head beam assembly connected with the adapter housing, the head beam assembly is used for bypassing the head top of the user and enabling the movement module to be in contact with the cheeks of the user, the head beam assembly includes an arc head beam member and an adapter, the arc head beam member is used for bypassing the head top of the user, the adapter includes a first connection section, a middle transition section and a second connection section which are sequentially connected, the first connection section is connected with the arc head beam member, the second connection section is connected with the adapter housing, and the first connection section and the second connection section are respectively bent and reversely extend relative to the middle transition section so as to be observed along the direction of a human crown axis in a wearing state, the arc head beam member is located above an ear of the user, and the movement module is located at the front side of the ear of the user.

In the earphone provided by the application, the movement module is rotationally connected with the adapter shell, so that the fitting degree between the movement module and the cheek of a user is better, and the gap between the flange part of the peripheral edge of the movement module and the adapter shell is larger at a position which is rotationally connected with the flange part of the peripheral edge and the adapter shell, compared with the gap, the size of the gap is unchanged, so that the overall size of the movement module and the adapter shell in the vibration direction of the transducer device is reduced, and the earphone is more compact in structure.

In some embodiments, the earphone comprises a transfer housing and a core module, the transfer housing comprises a cylindrical side wall, the cylindrical side wall is located at the periphery of the core module, the core module comprises a core housing and a transduction device arranged in a containing cavity of the core housing, the core housing comprises a first core housing, the first core housing comprises an inner cylinder wall and an outer cylinder wall, the inner cylinder wall is located at the periphery of the transduction device, the outer cylinder wall is located at the periphery of the inner cylinder wall and is arranged at intervals with the inner cylinder wall in a direction perpendicular to the vibration direction of the transduction device, one of the outer cylinder wall and the cylindrical side wall is provided with a shaft hole, the other is provided with a rotating shaft matched with the shaft hole, and the rotating shaft is embedded in the shaft hole so as to allow the core housing to rotate relative to the transfer housing.

In some embodiments, the first movement housing further includes a reinforcing column, the reinforcing column is connected between the outer cylinder wall and the inner cylinder wall, the side of the cylindrical side wall facing the outer cylinder wall is provided with the rotating shaft, and the reinforcing column is provided with the shaft hole.

In some embodiments, the first movement housing further includes a transition wall and a cover plate connected between the inner cylinder wall and the outer cylinder wall, where the cover plate and the transition wall are disposed at intervals in the vibration direction, and form a helmholtz resonant cavity with the outer cylinder wall, the inner cylinder wall and the transition wall, and the helmholtz resonant cavity is communicated with the accommodating cavity, so as to absorb acoustic energy of sound waves formed by air in the accommodating cavity along with vibration of the transducer.

In some embodiments, the frequency response curve of the sound wave has a resonance peak with a peak resonance frequency between 500Hz and 4kHz, and a difference between the peak resonance intensity of the resonance peak when the opening of the helmholtz resonator communicating with the receiving cavity is in an open state and the peak resonance intensity of the resonance peak when the opening of the helmholtz resonator communicating with the receiving cavity is in a closed state is greater than or equal to 3dB.

In some embodiments, the first movement casing further includes an end wall and a transition wall, the end wall is connected with one end of the inner cylinder wall, and encloses to form the accommodating cavity, the transition wall is connected between the inner cylinder wall and the outer cylinder wall, the transition casing further includes a middle plate connected with the cylindrical side wall, the middle plate is located at one side of the end wall away from the accommodating cavity, the end wall, the inner cylinder wall, the transition wall, the outer cylinder wall, the middle plate and the cylindrical side wall enclose to form an acoustic filter, the acoustic filter is communicated with the accommodating cavity to absorb acoustic energy of sound waves formed by air in the accommodating cavity along with vibration of the transducer, and the acoustic waves are absorbed by the acoustic filter and then transmitted to the outside of the earphone through a gap between the cylindrical side wall and the outer cylinder wall.

In some embodiments, the cut-off frequency of the acoustic filter is less than or equal to 5kHz.

In some embodiments, the gap between the transition wall and the middle plate in the vibration direction and the gap between the inner cylinder wall and the outer cylinder wall in the direction perpendicular to the vibration direction are both greater than the gap between the cylindrical side wall and the outer cylinder wall in the direction perpendicular to the vibration direction.

In some embodiments, the earphone further comprises a battery and a main board coupled with the transduction device, the adaptor housing further comprises a housing connected with the cylindrical side wall, and the battery or the main board is arranged on one side of the housing facing the transduction device.

In some embodiments, the earphone further comprises a functional component arranged on the shell and coupled with the battery and the main board, the functional component comprises a first circuit board, a second circuit board, an encoder, a tact switch and a functional key, the first circuit board and the second circuit board are arranged in a stacked mode, the encoder is arranged on the first circuit board, the tact switch is arranged on the second circuit board and is positioned on one side of the second circuit board facing the first circuit board, the functional key comprises a key cap and a key rod connected with the key cap, the key cap is positioned on one side of the first circuit board facing away from the second circuit board, the free end of the key rod, away from the key cap, is arranged opposite to the tact switch, and the encoder is sleeved on the key rod; when the user presses the key rod through the key cap, the key rod triggers the tact switch to generate a second input signal.

In some embodiments, the first input signal is used to control the volume up/down of the earphone; and/or the second input signal is used for controlling any one of playing/suspending, song cutting, pairing equipment and starting/shutting down of the earphone.

In some embodiments, the earphone further comprises a pickup assembly and a switch assembly, the pickup assembly comprises a pivot connection block, a connection rod and a pickup, the pivot connection block is in pivot connection with the housing, one end of the connection rod is connected with the pivot connection block, the pickup is arranged at the other end of the connection rod, one side of the pivot connection block, which faces away from the housing, is provided with a concave area, and the switch assembly is arranged in the concave area.

In some embodiments, the bottom of the concave area is provided with a boss, an annular groove is formed between the peripheral wall of the boss and the side wall of the concave area, the switch assembly comprises a switch circuit board, an elastic support piece, a reinforcing ring and a key, the switch circuit board is arranged at the top of the boss, the elastic support piece comprises an integrally arranged annular fixing part and an elastic support part, the reinforcing ring is arranged on the annular fixing part in a lining manner along the circumferential direction of the annular fixing part, the annular fixing part is fixed in the annular groove through the reinforcing ring, the elastic support part is arranged in a dome shape, and the key is arranged on the elastic support part.

In the earphone provided by the application, one part of the core shell is provided with the inner layer structure and the outer layer structure, the inner cylinder wall and the outer cylinder wall are respectively used for accommodating the transduction device and are in rotary connection with the cylindrical side wall of the adapter shell in a shaft hole matching manner, and the whole structure is simple and reliable.

In some embodiments, the earphone includes the core module, the core module includes core casing, transduction device, first transmission piece, vibration panel and connecting piece, transduction device passes through first transmission piece hangs the holding intracavity of core casing, the core casing includes first core casing, second core casing and surrounding edge, first core casing includes interior section of thick bamboo wall and first outer section of thick bamboo wall, interior section of thick bamboo wall is located transduction device's periphery, first outer section of thick bamboo wall is located interior section of thick bamboo wall's periphery, and in the direction perpendicular to transduction device's vibration direction with interior section of thick bamboo wall interval sets up, second core casing with interior section of thick bamboo wall is connected, and is equipped with the mounting hole, vibration panel is located outside the core casing, and be used for with user's skin contact, the one end of connecting piece with vibration panel is connected, the other end is via the mounting hole stretches into in the core casing, and with transduction device connects, the surrounding edge with first section of thick bamboo wall, and surrounding the vibration panel is connected.

In some embodiments, the second deck housing includes a first end wall and a first cylindrical side wall connected to the first end wall, the first cylindrical side wall is located between the inner cylinder wall and the first outer cylinder wall and is clamped to the inner cylinder wall, and the mounting hole is formed in the first end wall.

In some embodiments, the second deck housing presses a peripheral region of the first vibration-transmitting sheet against the inner cylinder wall.

In some embodiments, the side of the vibration panel facing away from the transduction device includes a skin contact area for contacting the skin of a user and an edge area connected with the skin contact area, the edge area is located at the periphery of the skin contact area and is spaced from the skin contact area in the vibration direction, the surrounding edge includes a connecting portion clamped with the first outer cylinder wall and a limiting portion connected with the connecting portion, the connecting portion is in a cylindrical shape and is located at the periphery of the first outer cylinder wall, the limiting portion is located at the side of the vibration panel facing away from the transduction device, and is overlapped with the edge area and is staggered from the skin contact area when viewed in the vibration direction, and in a non-wearing state, the skin contact area protrudes in the vibration direction from the side of the limiting portion facing away from the transduction device.

In some embodiments, the earphone further includes a switch housing rotatably connected to the movement housing, and the peripheral edge further includes a flange portion connected to the connection portion, the flange portion being disposed at least partially spaced from the switch housing in the vibration direction, and the flange portion being located on a periphery of the first outer cylinder wall and overlapping the switch housing as viewed in the vibration direction.

In some embodiments, in the non-wearing state, the gap between the flange portion and the adaptor housing in the vibration direction gradually increases with an axis of rotation of the movement housing relative to the adaptor housing as a starting point, and the reference direction is defined as a direction perpendicular to the vibration direction and a direction in which the axis is located and away from the axis.

In some embodiments, the first cartridge housing further includes a second outer cylinder wall and a reinforcing column, the second outer cylinder wall is located at the periphery of the inner cylinder wall and is spaced from the inner cylinder wall in a direction perpendicular to the vibration direction of the transducer, the second outer cylinder wall extends opposite to the first outer cylinder wall, the reinforcing column connects the second outer cylinder wall and the inner cylinder wall, the adaptor housing includes a second cylindrical side wall located at the periphery of the second outer cylinder wall, one of the reinforcing column and the second cylindrical side wall is provided with a shaft hole, the other one is provided with a rotating shaft matched with the shaft hole, and the rotating shaft is embedded into the shaft hole to allow the cartridge housing to rotate relative to the adaptor housing.

In some embodiments, the first movement housing further includes a transition wall and a cover plate connected between the inner cylinder wall and the second outer cylinder wall, where the cover plate and the transition wall are disposed at intervals in the vibration direction, and enclose with the second outer cylinder wall and the inner cylinder wall to form a helmholtz resonant cavity, and the helmholtz resonant cavity is communicated with the accommodating cavity, so as to absorb acoustic energy of sound waves formed by air in the accommodating cavity along with vibration of the transducer.

In some embodiments, the second outer cylinder wall is located at an outer periphery of the first outer cylinder wall and is located inside the flange portion as viewed in the vibration direction to allow the flange portion to overlap the second cylindrical side wall.

In some embodiments, the transition wall includes a first sub-transition wall connecting the inner cylinder wall and the first outer cylinder wall and a second sub-transition wall connecting the first outer cylinder wall and the second outer cylinder wall, the second sub-transition wall being spaced apart from the first sub-transition wall in the vibration direction, and the second sub-transition wall being closer to the vibration panel than the first sub-transition wall.

In the earphone provided by the application, the first shell of the core shell is provided with the inner layer structure and the outer layer structure, the inner cylinder wall of the first shell is used for accommodating the transduction device and is connected with the second shell, and the outer cylinder wall of the first shell is used for being connected with the surrounding edge, so that the second shell and the surrounding edge are respectively connected with the inner cylinder wall and the outer cylinder wall of the first shell in sequence in the earphone assembling process, and the earphone has the advantages of simple and reliable integral structure and high assembling efficiency.

In some embodiments, the connecting wire assembly includes a conductive wire and an auxiliary wire connected to the conductive wire, the conductive wire drives the auxiliary wire to elastically deform when being deformed under the stretching action of an external force, and the auxiliary wire provides an elastic restoring force after the external force is released, and the elastic restoring force is used for driving the conductive wire to restore to the shape before deformation.

In some embodiments, the wire is divided into a telescopic section and a natural section at both ends of the telescopic section, and the elastic coefficient of the telescopic section is between the elastic coefficient of the natural section and the elastic coefficient of the auxiliary wire.

In some embodiments, the telescoping section is a portion of the wire that extends helically around at least a portion of the auxiliary wire.

In some embodiments, the ratio between the length of the telescoping section and the length of the wire is between 0.1 and 0.5 in natural state.

In some embodiments, the auxiliary line includes an elastic body and collars at two ends of the elastic body, each of the collars is respectively sleeved on the corresponding natural section and is stopped by a limiting structure on the natural section in the rebound direction of the telescopic section.

In some embodiments, the limiting structure is a protrusion integrally connected with the insulating layer of the wire, or a knot formed by knotting the natural section.

In some embodiments, the earphone comprises a head beam assembly and a core module, the head beam assembly comprises an arc head beam member, an adapter member and the connecting wire assembly according to any one of claims 1-6, the arc head beam member is used for bypassing the head top of a user, two ends of the adapter member are respectively connected with the arc head beam member and the core module and can extend or retract the arc head beam member under the action of external force so as to allow the core module to approach or separate from the arc head beam member in the extending direction of the head beam assembly, the connecting wire assembly extends along the arc head beam member and stretches along with the extending of the adapter member or retracts of the adapter member to rebound, and the wire is electrically connected with the core module.

In some embodiments, the wire is divided into a telescoping section and a natural section at both ends of the telescoping section, and a middle region of the telescoping section is fixed to the arched head beam.

In some embodiments, the head beam assembly further comprises a press member that is engaged with the arcuate head beam member, the press member pressing the intermediate region of the telescoping section against the arcuate head beam member.

In some embodiments, the pressing member includes a pressing portion and clamping portions located at two ends of the pressing portion, each clamping portion is respectively bent relative to the pressing portion, the two clamping portions extend in the same direction towards one side of the pressing portion and can approach each other under the action of external force, the pressing portion is used for pressing the middle area of the telescopic section, and the clamping portions are used for being clamped with the arc-shaped head beam member.

Through the mode, in the connecting wire assembly provided by the application, the auxiliary wire matched with the wire is arranged, and after the wire and the auxiliary wire are stretched, the auxiliary wire can assist the wire to recover to the form before stretching, so that the wire is stretched again, and the whole structure is simple and reliable.

In some embodiments, the core module includes core casing, transduction device, first piece and the vibration panel of shaking, transduction device passes through first piece that shakes is hung in the holding intracavity of core casing, and include support, second piece that shakes, magnetic circuit and coil, the support passes through first piece that shakes with core casing is connected, the second piece that shakes passes through the support with first piece that shakes is connected, magnetic circuit with the central region of second piece that shakes is connected, in order to hang magnetic circuit in the holding intracavity, the coil stretches into along transduction device's vibration direction magnetic gap in magnetic circuit's, magnetic gap encircles magnetic circuit with the position that the second piece that shakes is connected, vibration panel with the support is connected, and is used for with the mechanical vibration that transduction device produced is transmitted to the user.

In some embodiments, the magnetic circuit system includes a magnetic conductive cover and a magnet connected to a bottom of the magnetic conductive cover, where the magnet is connected to a central area of the second vibration transmitting piece and is disposed at intervals in a direction perpendicular to the vibration direction with a side wall of the magnetic conductive cover to form the magnetic gap, and the side wall of the magnetic conductive cover and the second vibration transmitting piece are disposed at intervals in the vibration direction to form a channel that communicates the magnetic gap with an outside of the magnetic circuit system.

In some embodiments, the magnet includes a first magnetic member, a magnetic conductive member, and a second magnetic member stacked along the vibration direction, the second magnetic member is closer to the second vibration transmitting sheet than the first magnetic member, the magnetization directions of the first magnetic member and the second magnetic member are different, and a side wall of the magnetic conductive cover is at least overlapped with the magnetic conductive member when orthographic projected to the outer peripheral surface of the magnet along a direction perpendicular to the vibration direction.

In some embodiments, the coil overlaps at least the magnetic conductive member when orthographically projected to the outer peripheral surface of the magnet in a direction perpendicular to the vibration direction.

In some embodiments, the support includes a first support and a second support, the first support is connected to a central region of the first vibration-transmitting sheet, the second support is connected to a peripheral region of the second vibration-transmitting sheet, the second support and the vibration panel are respectively connected to the first support, and the coil is connected to the second support.

In some embodiments, the transduction device further includes a suspension connected to a central region of the second vibration-transmitting plate, the second support is located at a periphery of the suspension and spaced apart from the suspension in a direction perpendicular to the vibration direction, and the magnetic circuit system is connected to the suspension.

In some embodiments, the first support and the first vibration-transmitting sheet are integrally formed through a metal insert injection molding process, the second support and the second vibration-transmitting sheet are integrally formed through a metal insert injection molding process, one of the first support and the second support is provided with a plug hole, the other one of the first support and the second support is provided with a plug post embedded into the plug hole, and the plug post extends into the plug hole.

In some embodiments, the movement housing includes an inner cylinder wall, and a first end wall and a second end wall respectively connected to two ends of the inner cylinder wall, where the first end wall and the second end wall are respectively located at two opposite sides of the transduction device in the vibration direction, and enclose with the inner cylinder wall to form the accommodating cavity, the first end wall is provided with a mounting hole, the vibration panel is located outside the movement housing, the movement module further includes a connecting piece, one end of the connecting piece is connected with the vibration panel, and the other end of the connecting piece extends into the movement housing via the mounting hole and is connected with the bracket; the area of the vibration panel is larger than that of the mounting hole, and the area of the mounting hole is larger than that of the connecting piece when the vibration panel is observed along the vibration direction.

In some embodiments, the accommodating cavity is communicated with the outside of the movement module only through a channel, and the channel is a gap between the connecting piece and the wall surface of the mounting hole;

or, the accommodating cavity is communicated with the outside of the movement module only through a first channel and a second channel, the first channel is a gap between the connecting piece and the wall surface of the mounting hole, and the second channel is communicated with the outside of the movement module through an acoustic filter;

or, the accommodating cavity is communicated with the outside of the movement module only through a first channel and a second channel, the first channel is a gap between the connecting piece and the wall surface of the mounting hole, and the ratio between the opening area of the second channel and the opening area of the first channel is less than or equal to 10%.

In some embodiments, the accommodating cavity is communicated with the outside of the movement module through a channel, the channel is a gap between the connecting piece and the wall surface of the mounting hole, and the movement module further comprises a sealing film, and the sealing film seals the channel.

In some embodiments, the headset comprises a support assembly and the deck module of any one of claims 1-13, the support assembly being connected to the deck module and configured to support the deck module in a donned position.

In this way, compared with the prior art in which the side wall of the magnetic conductive cover of the magnetic circuit is connected with the peripheral region of the second vibration transmission sheet through a tubular connecting piece, in the movement module provided by the application, the magnetic circuit is connected with the central region of the second vibration transmission sheet, so that the magnetic circuit does not need to be provided with the tubular connecting piece connected with the peripheral region of the second vibration transmission sheet, namely, the tubular connecting piece is eliminated, so that the inside and outside of the transduction device are allowed to have larger communication areas, the sound cavity effect is favorably restrained, and the sound leakage of the earphone is further improved.

In some embodiments, the earphone includes supporting component and with the core module that supporting component is connected, supporting component is used for supporting the core module wears to wearing the position, the core module includes core casing, transduction device and vibration panel, transduction device sets up in the holding intracavity of core casing, vibration panel with transduction device is connected, and is used for with the mechanical vibration that transduction device produced is transmitted to the user, under wearing the state, and observe along the direction of human coronal axis place, the vibration panel orientation wear the center of position one side in the direction of human sagittal axis place than the core casing orientation wear the center of position one side and be close to the external auditory meatus of user's ear.

In some embodiments, the center of the vibration panel orthographic projected to the deck housing along the vibration direction of the transducer device coincides with the center of the transducer device orthographic projected to the deck housing along the vibration direction, and the center of the transducer device orthographic projected to the deck housing along the vibration direction does not coincide with the center of the deck housing on the side facing the transducer device in the vibration direction.

In some embodiments, the center of the transduction device orthographic projected to the movement housing along the vibration direction of the transduction device coincides with the center of the movement housing on a side toward the transduction device in the vibration direction, and the center of the vibration panel orthographic projected to the movement housing along the vibration direction does not coincide with the center of the transduction device orthographic projected to the movement housing along the vibration direction.

In some embodiments, the earphone further comprises a switch housing connecting the cartridge housing and the support assembly, the switch housing comprising a cylindrical side wall located at a periphery of the cartridge housing, orthographic projections of the cartridge housing and the cylindrical side wall on a reference plane perpendicular to a vibration direction of the transducer device respectively having a first center and a second center, the first center being closer to an external auditory canal of an ear of a user than the second center in a wearing state.

In some embodiments, the cartridge housing rotates about a first axis relative to the adapter housing, the first center and the second center being spaced along a direction in which the first axis is located.

In some embodiments, the first center and the second center are on the first axis.

In some embodiments, the adapter housing rotates relative to the support assembly about a second axis that intersects the first axis.

In some embodiments, the earphone further comprises a battery and a main board coupled with the transduction device, the adapter housing further comprises a middle board connected with the inner side of the cylindrical side wall and a shell buckled with the cylindrical side wall, the battery or the main board is arranged between the shell and the middle board, and the movement housing is positioned on one side of the middle board away from the shell.

In some embodiments, the support assembly is configured as a head rest assembly for bypassing the top of the user's head and bringing the vibration panel into contact with the user's cheek, the head rest assembly forming a first contact point with the top of the user's head in the worn state, the vibration panel forming a second contact point with the user's cheek, the second contact point being spaced from the first contact point by a distance between 20mm and 30mm in a direction of the sagittal axis of the human body.

In some embodiments, the head beam assembly comprises an arc-shaped head beam member for bypassing the head of a user, and an adapter member comprising a first connection section, an intermediate transition section and a second connection section, the intermediate transition section connecting the first connection section and the second connection section, the first connection section and the second connection section respectively bending and extending in opposite directions relative to the intermediate transition section, the first connection section being connected with the arc-shaped head beam member, the second connection section being connected with the adapter housing; the middle transition section is inclined relative to the vertical axis of the human body when being observed along the direction of the coronal axis of the human body.

In the earphone provided by the application, the center of the side of the vibration panel facing the wearing position is closer to the external auditory meatus of the ear of the user than the center of the side of the core shell facing the wearing position in the direction of the sagittal axis of the human body, namely, the vibration panel is arranged to be offset relative to the core shell, so that the core module vibrates at the wearing position to generate sound waves, and the sound waves can be transmitted to the central nerve of the user through the shortest path, so that the transmission efficiency of the sound waves is higher, and the sound loss is less.

In some embodiments, the earphone comprises a head beam assembly and a movement module connected with the head beam assembly, wherein the head beam assembly is used for bypassing the head top of a user and enabling the movement module to be in contact with the cheeks of the user, so that the movement module is allowed to transmit mechanical vibration generated by the movement module in a bone conduction mode, a first contact point is formed between the head beam assembly and the head top of the user in a wearing state, a second contact point is formed between the movement module and the cheeks of the user, and a third contact point is also formed between the first contact point and the second contact point in the direction of a vertical axis of a human body.

In some embodiments, when the head beam assembly forms the third contact point with the user's head, at least a portion of the head beam assembly between the first contact point and the second contact point is not in contact with the user's head.

In some embodiments, the head rail assembly and the two sides of the user's head form the third contact point, respectively.

In some embodiments, two ends of the head beam assembly are respectively connected with one movement module, and each movement module forms the second contact point with the cheek of the user.

In some embodiments, in the worn state, the earphone applies a compressive force directed toward the user's head at the first, second, and third contact points, respectively.

In some embodiments, the compressive force at the second contact point is between 0.2N and 2N and the compressive force at the third contact point is between 0.3N and 2N.

In some embodiments, the head beam assembly comprises an arc head beam and two auxiliary parts connected with the arc head beam, the arc head beam is used for bypassing the head top of a user, the movement module is connected with the arc head beam, and in a wearing state, the two auxiliary parts and two sides of the head of the user form the third contact point respectively.

In some embodiments, the auxiliary member has elasticity such that the auxiliary member changes an amount of pressing force at the second contact point by less than or equal to 0.2N due to different degrees of elastic deformation when the earphone is worn by users having different sized heads.

In some embodiments, the head beam assembly further comprises an adapter connecting the arcuate head beam member and the movement module, the adapter allowing the movement module to approach or depart from the arcuate head beam member in an extension direction of the head beam assembly, the arcuate head beam member providing a first compression force to the movement module in a first use state and providing a second compression force to the movement module in a second use state, the auxiliary being arranged such that an absolute value of a difference between the second compression force and the first compression force is between 0 and 0.1N;

the first use state is defined as a use state that each adapter piece has a first extension amount relative to the arc-shaped head beam piece, a first interval is formed between the core modules at two ends of the head beam assembly, the second use state is defined as a use state that each adapter piece has a second extension amount relative to the arc-shaped head beam piece, a second interval is formed between the core modules at two ends of the head beam assembly, the second extension amount is larger than the first extension amount, and the second interval is larger than the first interval.

In some embodiments, the first and second compressive forces are each between 0.4N and 0.8N.

In some embodiments, in a natural state, the head beam assembly has a first reference plane and a second reference plane orthogonal to each other, the two auxiliary members being symmetrically disposed with respect to the first reference plane, the second reference plane passing through a highest point and two end points of the arched head beam member, the arched head beam member and the auxiliary members being projected onto the second reference plane, a line between a fixed end and a free end of the auxiliary members having a first projection component in a first reference direction parallel to a line of the two end points and a second projection component in a second reference direction perpendicular to a line of the two end points, a ratio between the second projection component and the first projection component being between 1 and 5; and/or the equivalent elastic coefficient of the auxiliary piece is between 100N/m and 180N/m.

In some embodiments, the arc-shaped beam member is projected onto the second reference plane in a natural state, a rectangular coordinate system is established in the second reference plane, the rectangular coordinate system takes the highest point as a coordinate origin, a straight line passing through the coordinate origin and parallel to a connecting line of two endpoints is taken as an x axis, a straight line passing through the coordinate origin and perpendicular to the x axis is taken as a y axis, and a curve from any endpoint to the highest point of the arc-shaped beam member meets the following relation:

x＝±(-2.63472525·10 ¹⁵ ·y ¹⁰ +1.41380284·10 ¹² ｀y ⁹ -3.25586957·10 ¹⁰ ·y ⁸ +4.2058788·10 ⁸ ·y ⁷ -3.34381129·10 ⁶ ·y ⁶ +1.69016414·10 ⁴ ·y ⁵ -5.42625713·10 ³ ·y ⁴ +1.07794891·10 ¹ ·y ³ -1.27679777·y ² +9.70381438·y+2.61)；

wherein, the thickness of auxiliary part is less than or equal to 4mm, the clearance between auxiliary part and the arc head beam spare is greater than or equal to 10mm.

In some embodiments, each auxiliary member is fixed to one end of the arched head beam, a line between any one of the endpoints and the highest point of the arched head beam has a third projection component in a first reference direction parallel to a line between the two endpoints, and a fourth projection component in a second reference direction perpendicular to a line between the two endpoints, and a ratio between the second projection component and the fourth projection component is between 0.1 and 0.5.

In some embodiments, each of the auxiliary elements is cantilevered with respect to the arcuate head beam.

In some embodiments, in the low head state, the compression force at the first contact point forms a first resistive torque with respect to the second contact point, the compression force at the third contact point forms a second resistive torque with respect to the second contact point, the compression force at the second contact point forms a third resistive torque with respect to a contact surface of the movement module in contact with a user cheek when the head rail assembly includes the auxiliary, and the compression force at the second contact point forms a fourth resistive torque with respect to a contact surface of the movement module in contact with the user cheek when the head rail assembly does not include the auxiliary, the combined torque formed by the first resistive torque, the second resistive torque, and the third resistive torque being greater than the combined torque formed by the first resistive torque and the fourth resistive torque.

In some embodiments, in a natural state, the head beam assembly has a first reference plane and a second reference plane orthogonal to each other, the two auxiliary members are symmetrically disposed with respect to the first reference plane, the second reference plane passes through the highest point and two end points of the arc-shaped head beam member, the arc-shaped head beam member and the auxiliary members are projected to the second reference plane, and in the second reference plane, a projection component of a distance between a fixed end of the auxiliary member connected with the arc-shaped head beam member and the movement module adjacent to the auxiliary member in a second reference direction perpendicular to a connecting line of the two end points is between 40mm and 120 mm.

In some embodiments, the auxiliary member extends toward the middle region of the arched head beam, the head beam assembly has a first reference plane and a second reference plane orthogonal to each other in a natural state, the two auxiliary members are symmetrically disposed with respect to the first reference plane, the second reference plane passes through the highest point and two end points of the arched head beam, the arched head beam and the auxiliary member are projected onto the second reference plane, a first distance is provided between a fixed end of the auxiliary member connected with the arched head beam and the highest point in a reference direction perpendicular to a connecting line of the two end points in the second reference plane, a second distance is provided between a position of the movement module connected with the head beam assembly and the highest point in the reference direction, and a ratio between the first distance and the second distance is between 1/3 and 1/2.

In some embodiments, the auxiliary member extends towards the end of the arc-shaped head beam member, in a natural state, the head beam assembly has a first reference plane and a second reference plane which are orthogonal to each other, the two auxiliary members are symmetrically arranged relative to the first reference plane, the second reference plane passes through the highest point and two end points of the arc-shaped head beam member, the arc-shaped head beam member and the auxiliary member are projected to the second reference plane, in the second reference plane, a third distance is arranged between a fixed end of the auxiliary member connected with the arc-shaped head beam member and the highest point in a reference direction perpendicular to a connecting line of the two end points, a fourth distance is arranged between the position of the connection of the module and the head beam assembly and the highest point in the reference direction, and the ratio between the third distance and the fourth distance is between 1/5 and 1/3.

In some embodiments, the auxiliary member includes a fixing portion, a first extension portion connected with the fixing portion, and a second extension portion connected with the first extension portion, the fixing portion is connected with the arched head beam, the first extension portion and the second extension portion are located at a side of the arched head beam facing the head of the user in a wearing state, and are disposed at intervals from the arched head beam in a natural state, a width of the second extension portion is greater than a width of the first extension portion, and the second extension portion is used for forming the third contact point with the head of the user in the wearing state.

In some embodiments, the auxiliary element is detachably connected to the arcuate head beam.

In some embodiments, the area of the second extension in contact with the user's head is between 2cm ² And 8cm ² Between them.

In some embodiments, the coefficient of friction of the second extension is greater than the coefficient of friction of the first extension.

In some embodiments, the second extensions of the two auxiliary elements, in the worn state, are drawn towards each other towards the rear side of the user's head, viewed in the direction of the vertical axis of the human body.

In some embodiments, in a natural state, the head beam assembly has a first reference plane and a second reference plane orthogonal to each other, the two auxiliary members being symmetrically disposed with respect to the first reference plane, the second reference plane passing through a highest point and two end points of the arc-shaped head beam member, and an angle between an average normal of the second extension of each auxiliary member and the second reference plane being between 5 degrees and 10 degrees.

In some embodiments, the earphone comprises a head beam assembly and a movement module connected with the head beam assembly, wherein the head beam assembly is used for bypassing the head top of a user and enabling the movement module to be in contact with the cheeks of the user so as to allow the movement module to transmit mechanical vibration generated by the movement module in a bone conduction mode, in a wearing state, the movement module forms a first contact point with the cheeks of the user and applies a first compression force to the head of the user, the head beam assembly forms a second contact point with the head of the user and applies a second compression force to the head of the user, and the second contact point is closer to the head of the user than the first contact point in the direction of a vertical axis of a human body.

In some embodiments, the head rest assembly is not in contact with the user's head at least a portion between the second contact point and the top of the user's head when the second contact point applies the second compressive force to the user's head.

In some embodiments, the compressive force at the first contact point is between 0.2N and 2N and the compressive force at the second contact point is between 0.3N and 2N.

In some embodiments, the head beam assembly includes an arc head beam and two auxiliary parts connected with the arc head beam, the arc head beam is used for bypassing the top of the head of the user, the movement module is connected with the arc head beam, in the wearing state, two auxiliary parts form the second contact points with two sides of the head of the user respectively, the auxiliary parts have elasticity, so that when the earphone is worn by users with heads of different sizes, the auxiliary parts deform elastically to different degrees so that the change amount of the first pressing force is smaller than or equal to 0.2N.

In some embodiments, in the low head state, the second pressing force forms a first resisting moment relative to the first contact point, the pressing force at the first contact point forms a second resisting moment relative to a contact surface of the movement module in contact with a cheek of a user when the head beam assembly includes the auxiliary, the pressing force at the first contact point forms a third resisting moment relative to a contact surface of the movement module in contact with the cheek of the user when the head beam assembly does not include the auxiliary, and a resultant moment formed by the first resisting moment and the second resisting moment is greater than the third resisting moment.

According to the application, the mechanical vibration generated by the movement module is transmitted in a bone conduction mode, and the headset is worn by a user in a head wearing mode, namely, a brand new head bone conduction headset which is different from an ear bone conduction headset, and on the basis, a third contact point is further formed between a first contact point formed by the head beam component and the head top of the user and a second contact point formed by the movement module and the cheeks of the user, so that in a low head state, the movement module generates a resisting moment under the action of friction force due to contact with the cheeks of the user, the head beam component generates another resisting moment under the action of friction force due to contact with the head top of the user, and the combined moment of the three resisting moments is larger than the combined moment of the two resisting moments, so that the combined moment is easier to overcome the moment of the headset in the low head state, and the reliability of the headset in wearing aspect is improved.

In some embodiments, the earphone comprises a support assembly and a core module connected with the support assembly, the support assembly is used for supporting the core module to be worn to a wearing position, the core module comprises a core shell, a transduction device, a vibration panel and a surrounding edge, the transduction device is arranged in a containing cavity of the core shell, the vibration panel is connected with the transduction device and is used for transmitting mechanical vibration generated by the transduction device to a user, the surrounding edge is connected with the core shell, the projection of the surrounding edge in a reference plane surrounds the periphery of the projection of the vibration panel in the reference plane, and the reference plane is perpendicular to the vibration direction of the transduction device; one side of the core shell, which is close to the vibration panel, is surrounded with the vibration panel and the surrounding edge to form a cavity, and the surrounding edge is provided with a communication hole which is communicated with the outside of the core module, so that the cavity is communicated with the outside of the core module through the communication hole in a wearing state.

In some embodiments, at least a portion of the peripheral edge contacts the skin of the user with the vibration panel in the worn state.

In some embodiments, a target frequency range with a section length of at least 1/3 octave exists in a frequency range of 500Hz to 4kHz, and in the target frequency range, leakage sound generated by the earphone in a wearing state when the communication hole is in an open state is weaker than leakage sound generated by the earphone in a wearing state when the communication hole is in a closed state.

In some embodiments, the target frequency range is 1kHz to 2kHz.

In some embodiments, the number of the communication holes is plural, and an opening ratio of the communication holes on the peripheral edge is 30% or more.

In some embodiments, at least one of the communication holes is provided per square millimeter of unit area on the perimeter.

In some embodiments, the peripheral edge is a plastic piece, and the wall thickness of the peripheral edge is between 0.2mm and 1mm.

In some embodiments, the peripheral edge is a plastic piece and the wall thickness of the portion of the peripheral edge for contact with the skin of the user is greater than 1mm.

In some embodiments, the plastic part is molded onto a metal frame by an injection molding process.

In some embodiments, the peripheral edge is a metal piece to allow the aperture ratio of the communication hole on the peripheral edge to be greater than or equal to 60%.

In some embodiments, the perimeter is steel mesh.

In some embodiments, the movement housing is a first plastic part, the surrounding edge is connected with the movement housing through a second plastic part, and the second plastic part and the metal part are integrally formed through an injection molding process.

In some embodiments, the core module includes a first vibration transmitting sheet and a connecting piece, the transduction device is suspended in the accommodating cavity through the first vibration transmitting sheet, the core housing includes an inner cylinder wall, and a first end wall and a second end wall respectively connected with two ends of the inner cylinder wall, the first end wall and the second end wall are respectively located at two opposite sides of the transduction device in the vibration direction and enclose with the inner cylinder wall to form the accommodating cavity, the first end wall is provided with a mounting hole, the vibration panel is located outside the core housing, one end of the connecting piece is connected with the vibration panel, the other end extends into the core housing through the mounting hole and is connected with the transduction device, and the surrounding edge is connected with the first end wall and encloses with the first end wall and the vibration panel to form the cavity; the area of the vibration panel is larger than that of the mounting hole, and the area of the mounting hole is larger than that of the connecting piece when the vibration panel is observed along the vibration direction.

In the earphone provided by the application, the side, close to the vibration panel, of the core shell is provided with the cavity along with the vibration panel and the surrounding edge to enable the accommodating cavity of the core shell for arranging the energy replacing device to be sealed as much as possible, so that leakage sound generated by air in the accommodating cavity along with the vibration of the energy replacing device is prevented from being transmitted, on the basis, the surrounding edge is further provided with the communication hole for communicating the cavity with the outside of the core module, so that the cavity is communicated with the outside of the core module through the communication hole in a wearing state, the leakage sound generated by air in the cavity along with the vibration of the energy replacing device can be eliminated with the leakage sound generated by the core shell along with the vibration of the energy replacing device in a far-field reverse phase, or the leakage sound generated by the shell body along with the vibration of the energy replacing device can be eliminated in a far-field reverse phase, and therefore the leakage sound of the earphone is reduced.

In some embodiments, the earphone comprises a support assembly and a core module connected with the support assembly, the support assembly is used for supporting the core module to be worn to a wearing position, the core module comprises a core shell, a transduction device, a vibration panel and a surrounding edge, the transduction device is arranged in a containing cavity of the core shell, the vibration panel is connected with the transduction device and is used for transmitting mechanical vibration generated by the transduction device to a user, the surrounding edge is connected with the core shell, the projection of the surrounding edge in a reference plane surrounds the periphery of the projection of the vibration panel in the reference plane, and the reference plane is perpendicular to the vibration direction of the transduction device; wherein, one side of the movement shell close to the vibration panel, the vibration panel and the surrounding edge are surrounded to form a cavity, the surrounding edge has an uneven area on the outer surface of one side facing the skin of the user in the wearing state, so that the surrounding edge is not completely attached when contacting with the skin of a user, and the cavity is further allowed to be communicated with the outside of the movement module.

In some embodiments, a groove is provided on the outer surface of the peripheral edge, and the cavity is communicated with the outside of the movement module through the groove.

In some embodiments, the projection of the surrounding edge in the reference plane has a long axis direction and a short axis direction which are orthogonal to each other, the dimension of the surrounding edge in the long axis direction is larger than the dimension of the surrounding edge in the short axis direction, the number of grooves is a plurality, the grooves are divided into four groups, two groups of grooves are respectively arranged at intervals along the long axis direction, the other two groups of grooves are respectively arranged at intervals along the short axis direction, and the number of grooves of each group arranged at intervals along the long axis direction is larger than the number of grooves of each group arranged at intervals along the short axis direction.

In some embodiments, the outer surface of the surrounding edge is provided with a protrusion, the protrusion enables the surrounding edge to form a gap with the skin of a user in a wearing state, and the cavity is communicated with the outside of the movement module through the gap.

In some embodiments, the number of protrusions is a plurality, and the plurality of protrusions makes the gap grid-shaped.

In some embodiments, there is a target frequency range with a span length of at least 1/3 octave within a frequency range of 500Hz to 4kHz, in which the leakage sound generated by the earphone in a worn state when the outer surface of the peripheral edge has an uneven region is weaker than the leakage sound generated by the earphone in a worn state when the outer surface of the peripheral edge does not have an uneven region.

In some embodiments, the target frequency range is 1kHz to 2kHz.

In some embodiments, the height difference of the rugged region is between 0.5mm and 5 mm.

In some embodiments, the peripheral edge is provided with a communication hole for communicating the cavity with the outside of the movement module, so that in a wearing state, the cavity is further communicated with the outside of the movement module through the communication hole.

In some embodiments, the core module includes a first vibration transmitting sheet and a connecting piece, the transduction device is suspended in the accommodating cavity through the first vibration transmitting sheet, the core housing includes an inner cylinder wall, and a first end wall and a second end wall respectively connected with two ends of the inner cylinder wall, the first end wall and the second end wall are respectively located at two opposite sides of the transduction device in a vibration direction of the transduction device, and enclose with the inner cylinder wall to form the accommodating cavity, the first end wall is provided with a mounting hole, the vibration panel is located outside the core housing, one end of the connecting piece is connected with the vibration panel, the other end extends into the core housing through the mounting hole and is connected with the transduction device, and the peripheral edge is connected with the first end wall and encloses with the first end wall and the vibration panel to form the cavity; the area of the vibration panel is larger than that of the mounting hole, and the area of the mounting hole is larger than that of the connecting piece when the vibration panel is observed along the vibration direction.

In the earphone provided by the application, the side, close to the vibration panel, of the core shell is provided with the cavity along with the vibration panel and the surrounding edge to enable the accommodating cavity of the core shell for arranging the energy replacing device to be sealed as much as possible, so that leakage sound generated by air in the accommodating cavity along with the vibration of the energy replacing device is prevented from being transmitted, on the basis, the surrounding edge is provided with an uneven area on the outer surface of one side, facing to the skin of a user, in a wearing state, so that the surrounding edge is not fully attached to the skin of the user when being in contact with the skin of the user, and the cavity is further allowed to be communicated with the outside of the core module, so that leakage sound generated by air in the cavity along with the vibration of the energy replacing device can be eliminated in a far-field phase inversion with leakage sound generated by air in the core shell along with the vibration of the energy replacing device, or leakage sound generated by the core shell along with the vibration of the energy replacing device can be eliminated in a far-field phase inversion phase, so that leakage sound of the earphone is reduced.

In some embodiments, the earphone comprises a support assembly and a core module connected with the support assembly, the support assembly is used for supporting the core module to be worn to a wearing position, the core module comprises a core shell, a transduction device, a vibration panel and a surrounding edge, the transduction device is arranged in a containing cavity of the core shell, the vibration panel is connected with the transduction device and is used for transmitting mechanical vibration generated by the transduction device to a user, the surrounding edge is connected with the core shell, the projection of the surrounding edge in a reference plane surrounds the periphery of the projection of the vibration panel in the reference plane, and the reference plane is perpendicular to the vibration direction of the transduction device; the machine core comprises a machine core shell, a vibration panel, a surrounding edge, a porous structure, a vibration panel, a shell body and a shell body, wherein the side, close to the vibration panel, of the machine core shell body is surrounded with the vibration panel and the surrounding edge to form a cavity, the porous structure is arranged on one side, facing to the skin of a user, of the surrounding edge in a wearing state, so that the porous structure at least partially contacts the skin of the user together with the vibration panel in the wearing state, and the cavity is allowed to be communicated with the outside of the machine core module.

In some embodiments, a target frequency range with a section length of at least 1/3 octave exists in a frequency range of 500Hz to 4kHz, and in the target frequency range, when the movement module has the porous structure, the leakage sound generated by the earphone in the wearing state is weaker than the leakage sound generated by the earphone in the wearing state when the movement module does not have the porous structure.

In some embodiments, the target frequency range is 1kHz to 2kHz.

In some embodiments, the porous structure comprises a fixing layer and a porous main body layer connected with the fixing layer, the porous structure is connected with the surrounding edge through the fixing layer, and the porous structure is communicated with the outside of the cavity and the movement module through the porous main body layer.

In some embodiments, the securing layer is removably attached to the peripheral edge.

In some embodiments, the connection mode between the fixing layer and the surrounding edge is any one of magnetic attraction type, fastening type and bonding type.

In some embodiments, the fixing layer is a cured glue, and the porous structure includes a protective layer covering the porous body layer, and the porous structure is in contact with the skin of the user through the protective layer.

In some embodiments, the protective layer is provided as a textile or steel mesh.

In some embodiments, the porous body layer has a porosity of greater than or equal to 60%.

In some embodiments, the porous body layer is foam.

In some embodiments, the core module includes a first vibration transmitting sheet and a connecting piece, the transduction device is suspended in the accommodating cavity through the first vibration transmitting sheet, the core housing includes an inner cylinder wall, and a first end wall and a second end wall respectively connected with two ends of the inner cylinder wall, the first end wall and the second end wall are respectively located at two opposite sides of the transduction device in a vibration direction of the transduction device, and enclose with the inner cylinder wall to form the accommodating cavity, the first end wall is provided with a mounting hole, the vibration panel is located outside the core housing, one end of the connecting piece is connected with the vibration panel, the other end extends into the core housing through the mounting hole and is connected with the transduction device, and the peripheral edge is enclosed with the first end wall and the vibration panel to form the cavity; the area of the vibration panel is larger than that of the mounting hole, and the area of the mounting hole is larger than that of the connecting piece when the vibration panel is observed along the vibration direction.

In the earphone provided by the application, the side, close to the vibration panel, of the core shell is provided with the cavity along with the vibration panel and the surrounding edge to enable the accommodating cavity of the core shell for arranging the energy replacing device to be sealed as much as possible, so that leakage sound generated by air in the accommodating cavity along with the vibration of the energy replacing device is prevented from being transmitted, on the basis, the surrounding edge is provided with the porous structure on the side, facing to the skin of a user, in the wearing state, at least part of the porous structure contacts the skin of the user together with the vibration panel, and the cavity is allowed to be communicated with the outside of the core module, so that leakage sound generated by air in the cavity along with the vibration of the energy replacing device can be eliminated in far-field phase inversion with leakage sound generated by the core shell along with the vibration of the energy replacing device, or leakage sound generated by the core shell along with the vibration of the energy replacing device can be eliminated in far-field phase inversion, and therefore leakage sound of the earphone is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment of an earphone according to the present application;

fig. 2 is a schematic structural diagram of an embodiment of a relative positional relationship between a connector and a vibration panel in an earphone according to the present application;

fig. 3 is a schematic structural diagram of an embodiment of an earphone according to the present application;

fig. 4 is a schematic structural diagram of an embodiment of an earphone according to the present application;

FIG. 5 is a schematic view of an embodiment of a vibration panel according to the present application;

FIG. 6 is a schematic view of an embodiment of a vibration panel according to the present application;

FIG. 7 is a schematic view of an embodiment of a vibration panel according to the present application;

fig. 8 is a schematic structural diagram of an embodiment of an earphone according to the present application;

fig. 9 is a schematic structural diagram of an embodiment of an earphone according to the present application;

fig. 10 is a schematic structural diagram of an embodiment of an earphone according to the present application;

Fig. 11 is a schematic structural diagram of an embodiment of an earphone according to the present application;

fig. 12 is a schematic structural diagram of an embodiment of an earphone according to the present application;

fig. 13 is a schematic structural diagram of an earphone according to an embodiment of the present application in a wearing state;

fig. 14 is a schematic structural diagram of an earphone according to an embodiment of the present application in a wearing state;

fig. 15 is a schematic structural diagram of an earphone according to an embodiment of the present application in a wearing state;

fig. 16 is a schematic structural view of an earphone according to an embodiment of the present application in a wearing state;

fig. 17 is a schematic structural diagram of an earphone according to an embodiment of the present application in a wearing state;

FIG. 18 is a schematic illustration of a mechanical model of cantilever beam bending deformation provided by the application;

FIG. 19 is a schematic view of a mechanical model of an embodiment of a head beam assembly provided herein;

FIG. 20 is an exploded view of one embodiment of the headset of FIG. 12;

fig. 21 is an exploded view of the ear camera of fig. 20 from another perspective;

FIG. 22 is an enlarged partial schematic view of the area E1 of the adapter of FIG. 20;

FIG. 23 is an exploded view of one embodiment of the headset of FIG. 12;

FIG. 24 is an exploded view of one embodiment of the headset of FIG. 12;

fig. 25 is a schematic structural diagram of an earphone according to an embodiment of the present application in a wearing state;

Fig. 26 is a schematic structural diagram of an earphone according to an embodiment of the present application in a wearing state;

FIG. 27 is a schematic cross-sectional view of an embodiment of the headset of FIG. 12;

fig. 28 is a schematic cross-sectional view of the ear camera of fig. 27 from another perspective;

fig. 29 is a schematic cross-sectional view of the ear camera of fig. 27 from another perspective;

FIG. 30 is a schematic cross-sectional view of an embodiment of a headset according to the present application;

FIG. 31 is a schematic cross-sectional view of an embodiment of an earphone according to the present application;

FIG. 32 is a schematic cross-sectional view of an embodiment of the headset of FIG. 12;

fig. 33 is a schematic cross-sectional view of the ear camera of fig. 32 from another perspective;

fig. 34 is a schematic structural diagram of an embodiment of an earphone according to the present application;

fig. 35 is a schematic structural diagram of an embodiment of an earphone provided by the present application;

FIG. 36 is an equivalent model schematic of an embodiment of the headset provided by the present application;

FIG. 37 is a plot of the frequency response of vibration of a vibration panel in a non-worn state for an embodiment of the headset provided by the present application;

FIG. 38 is a plot of the frequency response of vibration of a vibration panel of the earphone provided by the present application in a non-worn state with the first vibration transmitting plate having different stiffness;

FIG. 39 is a plot of the frequency response of vibration of the vibration panel of the earphone of the present application in a non-worn state with the second vibration transmitting plate having different stiffness;

FIG. 40 is a plot of the frequency response of vibration of the vibration panel of the earphone of the present application in a non-worn state with different masses of the movement housing;

FIG. 41 is a plot of the frequency response of vibration of a vibration panel of the earphone provided by the present application in a non-worn state with the first and second vibration transmitting plates having different rigidities;

FIG. 42 is a plot of the frequency response of a leaky sound in a non-worn state for two earphone embodiments provided by the present application;

FIG. 43 is a schematic view of the structure of an earphone according to an embodiment of the present application facing the skin of a user;

FIG. 44 is a schematic diagram of the structure of an earphone according to an embodiment of the present application facing the skin of a user;

FIG. 45 is a schematic diagram of an earphone according to an embodiment of the present application;

fig. 46 is a schematic structural diagram of an embodiment of an earphone according to the present application;

FIG. 47 is a schematic view of an embodiment of the bracket of FIG. 46;

FIG. 48 is a schematic diagram of an embodiment of the headset of FIG. 12 facing the head of a user;

fig. 49 is a schematic diagram of a mechanical model of the earphone provided by the application under different wearing modes;

FIG. 50 is a schematic diagram of an embodiment of a headset according to the present application;

FIG. 51 is a schematic diagram of an embodiment of a headset according to the present application;

Fig. 52 is a schematic structural diagram of an embodiment of an earphone according to the present application;

FIG. 53 is a schematic view of an exploded construction of one embodiment of an arcuate head beam member provided by the present application;

FIG. 54 is a schematic cross-sectional view of an embodiment of the arched head beam of FIG. 53;

FIG. 55 is a schematic view of a partially exploded construction of an embodiment of a head beam assembly provided by the present application;

FIG. 56 is a schematic view of a partial structure of an embodiment of a head beam assembly according to the present application in different states;

FIG. 57 is a schematic view of an exploded view of an embodiment of a connection wire assembly according to the present application;

FIG. 58 is a schematic diagram of an exploded view of an embodiment of a headset according to the present application;

fig. 59 is a schematic view of the ear camera of fig. 58 from another perspective;

FIG. 60 is a schematic cross-sectional view of an embodiment of a headset according to the present application;

FIG. 61 is a plot of the frequency response of a leaky sound in a non-worn state for two earphone embodiments provided by the present application;

fig. 62 is a schematic cross-sectional view of an embodiment of the headset of fig. 27.

Detailed Description

The application is described in further detail below with reference to the drawings and examples. It is specifically noted that the following examples are only for illustrating the present application, but do not limit the scope of the present application. Likewise, the following examples are only some, but not all, of the examples of the present application, and all other examples, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.

In the present application, the earphone 10 may include a deck module 11, and the deck module 11 is configured to generate at least bone conduction sound and contact with the skin (e.g., cheek) of the user in a wearing state to allow the external auditory meatus of the user's ear to be "opened". In other words, in a case where the external auditory meatus of the user's ear is opened without being blocked/shielded by the earphone 10, the earphone 10 can also generate a sound guide, which will be exemplarily described later. At this time, the sound generated by the earphone 10 may be mainly bone conduction sound, and the air conduction sound is auxiliary, that is, the air conduction sound enhances the bone conduction sound, thereby improving the sound quality of the earphone 10.

It should be noted that: the mechanical vibration generated by the bone conduction sound finger movement module 11 is mainly transmitted through mediums such as the skull of a user, and the mechanical vibration generated by the air conduction sound finger movement module 11 is mainly transmitted through mediums such as air. Further, two movement modules 11 may be provided, and both movement modules 11 may convert an electrical signal into mechanical vibration, so that the earphone 10 may achieve a stereo sound effect. Therefore, in other application scenarios where the stereo requirements are not particularly high, such as hearing assistance of a hearing patient, live broadcasting of a word by a host, etc., the earphone 10 may be provided with only one movement module 11, and the removed movement module 11 may be replaced by a structural member worn by the auxiliary earphone 10.

Referring to fig. 1, the deck module 11 may include a deck housing 111 and a transducer 112 disposed in the receiving cavity 100 of the deck housing 111, the transducer 112 being configured to convert an electrical signal into mechanical vibration. At this time, the movement module 11 may transmit the mechanical vibration generated by the transducer 112 mainly in a bone conduction manner, so as to form bone conduction sound.

In some embodiments, in the worn state, the movement module 11 may be in direct contact with the skin of the user through the movement housing 111, i.e. the movement module 11 directly transmits the mechanical vibrations generated by the transduction device 112 through the movement housing 111. As such, the earphone 10 may not include the first vibration transmitting sheet 113, the vibration panel 114, and the like, which will be described later. At the same time, the movement case 111 also drives air outside the earphone 10 to vibrate, thereby generating leakage sound. At this time, in order to reduce the leakage sound of the earphone 10, the deck housing 111 may be provided with a through hole (which may be defined as a "leakage hole") for communicating the receiving cavity 100 with the exterior of the earphone 10, so as to allow the sound wave output to the exterior of the earphone 10 through the leakage hole to cancel the leakage sound generated by the deck housing 111 vibrating with the transducer 112 in the far field in opposite phase (commonly referred to as "punching leakage hole").

In other embodiments, the deck module 11 may further include a first vibration-transmitting sheet 113 and a vibration panel 114. The transducer 112 may be suspended in the accommodating cavity 100 by a first vibration-transmitting sheet 113, and the vibration panel 114 may be at least partially located outside the accommodating cavity of the cartridge case 11 and connected to the transducer 112, for transmitting mechanical vibrations generated by the transducer 112 to a user. Accordingly, the cartridge case 111 has an open structure at one end near the vibration panel 114. At this time, in the wearing state, the deck module 11 may be in contact with the skin of the user through the vibration panel 114, that is, the deck module 11 transmits the mechanical vibration generated by the transducer 112 through the vibration panel 114. Meanwhile, due to the existence of the first vibration transmitting sheet 113, the mechanical vibration generated by the transducer 112 can be less or even not transmitted to the core housing 111, so that the core housing 111 is prevented from driving the air outside the earphone 10 to vibrate as much as possible, and the leakage sound of the earphone 10 is reduced. Of course, the leakage of the earphone 10 can be further reduced by punching to reduce the leakage.

In other embodiments, such as that of fig. 1, movement module 11 also transmits the mechanical vibrations generated by transducer assembly 112 through vibration panel 114, except that: the end of the deck housing 111 near the vibration panel 114 is not open, that is, the other portion except the mounting hole 1111 mentioned later may be a closed structure. At this time, the core housing 111 itself can reduce the leakage sound of the earphone 10 based on the acoustic dipole, and there is little or no need to additionally provide a leakage sound reducing hole in the core housing 111. Referring to fig. 42, in fig. 42, the frequency curve 42_1 and the frequency curve 42_2 respectively represent the sound leakage of the earphone 10 when the end of the deck housing 111 near the vibration panel 114 is in an open structure, and the sound leakage of the earphone 10 when the end of the deck housing 111 near the vibration panel 114 is in a closed structure. Obviously, compared with the structure that the end of the deck housing 111 close to the vibration panel 114 is open, when the end of the deck housing 111 close to the vibration panel 114 is closed, the leakage sound of the earphone 10 is significantly reduced.

As an example, the deck module 11 may further include a connector 115 connecting the vibration panel 114 and the transducer 112, and the deck housing 111 is provided with a mounting hole 1111 for mounting the connector 115. At this time, the vibration panel 114 is located outside the deck case 111 to be in contact with the skin of the user; one end of the connecting member 115 is connected to the vibration panel 114, and the other end extends into the cartridge case 111 via the mounting hole 1111 and is connected to the transducer 112. In this way, even if the mechanical vibration generated by the transducer 112 is partially transmitted to the deck housing 111 through the first vibration transmitting plate 113, the phases of the leakage sounds generated by the first end wall 1113 and the second end wall 1114 respectively vibrating with the transducer 112 are opposite, and the two can be in opposite phase in the far field, so that the leakage sounds of the earphone 10 can be reduced. Based on this, the core case 111 may be provided with fewer or no sound leakage holes, thereby improving the waterproof and dustproof performance of the earphone 10. Preferably, the vibration panel 114 has an area larger than that of the mounting hole 1111, and the mounting hole 1111 has an area larger than that of the connection member 115, as viewed in the vibration direction of the transducer 112. In this way, the mechanical vibration generated by the transducer 112 is prevented from being transmitted to the deck 111 via the connector 115, so as to further reduce the leakage of the earphone 10. At this time, the gap between the connection member 115 and the wall surface of the mounting hole 1111 and the accommodation chamber 100 cooperate to form a helmholtz resonator whose resonance frequency may be less than or equal to 4kHz, preferably less than or equal to 2kHz, more preferably less than or equal to 1kHz.

As an example, the cartridge case 111 may include an inner cylinder wall 1112, and a first end wall 1113 and a second end wall 1114 respectively connected to two ends of the inner cylinder wall 1112, where the inner cylinder wall 1112 is located at the periphery of the transducer 112, and the first end wall 1113 and the second end wall 1114 are respectively located at opposite sides of the transducer 112 in the vibration direction of the transducer 112, and define the accommodating chamber 100 with the inner cylinder wall 1112. The cross section of the inner tube wall 1112 may be any one of a circular shape, an elliptical shape, a racetrack shape, a polygonal shape, etc. as viewed in the vibration direction of the transducer 112, and may be irregular entirely or partially. Further, in the worn state, first end wall 1113 is closer to the skin of the user than second end wall 1114. At this time, the first end wall 1113 is provided with the mounting hole 1111. Of course, in other embodiments, such as those where the need for a sound leak is not stringent or where a hole is punched, cartridge housing 111 may not include first end wall 1113 and/or second end wall 1114, and the side of transducer 112 facing away from vibration faceplate 114 may be protected by other structural members (e.g., adaptor housing 13 as discussed below). In other embodiments, such as where the deck module 11 is not provided with the vibration panel 114, the deck housing 111 may be in direct contact with the user's skin through the first end wall 1113.

The inventors of the present application found in the course of long-term development that: in connection with fig. 61, the frequency response curve 61_1 and the frequency response curve 61_2 in fig. 61 represent the leakage sound of the earphone 10 when the deck housing 111 has a large volume and the deck housing 111 has a small volume, respectively. Obviously, when the deck case 111 has a smaller volume than the deck case 111 has a larger volume, the leakage sound of the earphone 10 is significantly reduced. For example: the leakage in the frequency range of 1kHz-2kHz is significantly smaller, and the leakage in the frequency range of 3kHz-4kHz is significantly smaller, which are all frequency ranges to which the human ear is sensitive. Wherein the leakage sound in the frequency range of 1kHz-2kHz contains more human voice components and has a larger influence on subjective perception of the user, so that the leakage sound in the frequency range is maintained at a lower level, which can make the earphone 10 more competitive in the market. Based on this, the volume of the cartridge case 111 may be less than or equal to 3cm under the condition that the cartridge case 111 accommodates the transduction device 112 ³ To reduce leakage of the earphone 10. Wherein the volume of the cartridge housing 111 may be measured by filling water therein. Further, the volume of the cartridge housing 111 may be changed by adjusting the radial dimension of the inner cylinder wall 1112 in a direction perpendicular to the vibration direction of the transducer 112 or adjusting the radial clearance of the inner cylinder wall 1112 and the transducer 112 in a direction perpendicular to the vibration direction of the transducer 112, for example, in satisfying the requirement that the transducer 112 is in vibration The radial dimension or the radial gap may be as small as possible without colliding with the deck case 111, thereby reducing the leakage sound of the earphone 10; in addition, the shock resistance of the earphone 10 may be increased, because the smaller radial dimension or the radial gap makes the transducer 112 have a smaller movement stroke in the event of impact such as a drop, and the deformation of the structural members such as the first vibration transmitting sheet 113 and the second vibration transmitting sheet 1122 is smaller, so that plastic deformation or fracture is less likely to occur, and the reliability is higher.

It should be noted that: although the transducer 112 is suspended in the accommodating cavity 100 through the first vibration-transmitting plate 113, for example, the transducer 112 is connected to a central area of the first vibration-transmitting plate 113 and a peripheral area of the first vibration-transmitting plate 113 is connected to the cartridge case 111, the relative position of the first vibration-transmitting plate 113 can be reasonably adjusted according to actual requirements. For example: the first vibration-transmitting sheet 113 is located in the accommodating cavity 100; specifically, the first vibration-transmitting plate 113 is located on the side of the first end wall 1113 adjacent to the second end wall 1114. In other words, the area of the mounting hole 1111 may be smaller than that of the first vibration transmitting sheet 113, as viewed in the vibration direction of the transduction device 112; here, the area of the first vibration-transmitting sheet 113 may be defined as an area of an area surrounded by a maximum peripheral boundary of the orthographic projection of the first vibration-transmitting sheet 113 in the vibration direction of the transducer 112. For another example: the first vibration-transmitting sheet 113 is located in the mounting hole 1111; alternatively, a part of the first vibration-transmitting sheet 113 is located in the accommodating chamber 100, and the other part is located in the mounting hole 1111; alternatively, the first vibration-transmitting plate 113 is partially located in the housing chamber 100, partially located in the mounting hole 1111, and partially located outside the deck housing 111. In this connection, referring to fig. 1, the present application is exemplified by the first vibration-transmitting sheet 113 being located in the accommodating cavity 100, so that the core housing 111 itself can reduce the leakage sound of the earphone 10 based on the acoustic dipole. Notably, are: compared with the first vibration-transmitting sheet 113 located in the mounting hole 1111, the first vibration-transmitting sheet 113 located in the accommodating cavity 100 can make the earphone 10 obtain better sound-leakage-reducing effect. This is mainly because: since the area of the first vibration transmitting plate 113 in the vibration direction of the transducer 112 is larger than the area of the connecting member 115 in the vibration direction of the transducer 112, the positioning of the first vibration transmitting plate 113 in the mounting hole 1111 results in a large reduction in the area of the first end wall 1113 in the vibration direction of the transducer 112, which tends to result in a large difference in rigidity between the first end wall 1113 and the second end wall 1114, which is disadvantageous in forming an acoustic dipole.

In some embodiments, the receiving chamber 100 may communicate with the outside of the earphone 10 only through a first channel, which is a gap between the connection member 115 and the wall surface of the mounting hole 1111. In other words, no sound leakage hole is provided in the deck 111. At this time, the leakage sound generated by the earphone 10 through the first end wall 1113 and the second end wall 1114 is canceled in the far-field phase opposition to reduce the leakage sound. It should be noted that: referring to fig. 8, when the core module 11 is provided with the helmholtz resonator 200, the core housing 111 may be provided with a through hole that communicates the accommodating chamber 100 with the helmholtz resonator 200, and the through hole may be formed on the inner cylinder wall 1112 and/or the second end wall 1114. At this time, since the helmholtz resonator 200 communicates with the exterior of the earphone 10 only through the aforementioned through hole, but not through other passages, it can still be regarded that the housing 100 communicates with the exterior of the earphone 10 only through the first passage.

In other embodiments such as the deck module 11 provided with the acoustic filter 300, the housing chamber 100 communicates with the outside of the earphone 10 only through the first passage, which is a gap between the connection member 115 and the wall surface of the mounting hole 1111, and the second passage, which communicates with the outside of the earphone 10 via the acoustic filter 300, in conjunction with fig. 9. At this time, in addition to the mounting hole 1111, a through hole for communicating the housing chamber 100 with the acoustic filter 300 is provided in the deck case 111, but the through hole functions differently from the sound leakage hole, and the two should not be mixed together.

In other embodiments, the receiving chamber 100 may communicate with the outside of the earphone 10 only through a first passage, which is a gap between the connection member 115 and the wall surface of the mounting hole 1111, and a second passage, which may have a ratio of an opening area to an opening area of the first passage of less than or equal to 10%. Wherein the aforementioned second channel may be used as a sound leakage reducing aperture to further adjust or optimize the leakage of the earphone 10 over the manner in which the sound dipole reduces the leakage. At this time, since the core housing 111 itself can reduce the leakage of the earphone 10 based on the acoustic dipole, the leakage of the earphone 10 can be at a level that is easy for a user to receive, and the opening area of the second channel is much smaller than that of the leakage hole of the related art, which is formed by only punching to reduce the leakage, so that the waterproof and dustproof requirements of the earphone 10 are met. Of course, the aforementioned second channel may not be used as an acoustic hole such as a leak-off hole; but rather serves as an appearance hole, for example, in an embodiment in which the earphone 10 includes two deck modules 11, one deck module 11 has a microphone therein and a deck housing 111 thereof has a microphone hole, and the other deck module 11 has no microphone therein and a deck housing 111 thereof has an appearance hole corresponding to the microphone hole; or simply a through hole that is otherwise useless and is provided in the deck 111.

It should be noted that: compared with the movement module 11 which is directly contacted with the skin of the user through the movement shell 111, the movement module 11 can achieve better fitting degree through the contact of the vibration panel 114 with the skin of the user. This is because the first vibration-transmitting sheet 113 has a certain elasticity, and the transducer 112, the vibration panel 114, etc. are suspended in the accommodating cavity 100 by the first vibration-transmitting sheet 113, and in the wearing state, the first vibration-transmitting sheet 113 allows the vibration panel 114 to deflect at a certain angle relative to the cartridge case 111 according to the skin contour when contacting the skin of the user, so that the vibration panel 114 can be more closely attached to the skin of the user, which is beneficial to reducing the loss of the mechanical vibration of the transducer 112 transmitted to the skull bone of the user by the vibration panel 114, and further enhancing bone conduction. Further, the vibration panel 114 also drives the air outside the earphone 10 to vibrate during the vibration of the transducer 112, and the opposite phases of the two opposite sides are opposite, so that the two opposite phases can be cancelled in the far field, thereby reducing the leakage of the earphone 10.

In general, the resonant frequency f of a structure satisfies the relation with the stiffness K of the structure and the mass m of the structure: f.alpha.K/m. Wherein stiffness may also be referred to as elastic coefficient, stiffness coefficient, etc. Obviously, the greater the rigidity of the structure, the higher the resonant frequency thereof, under the same mass . In addition, the higher the rigidity of the structure is, the fewer high-order modes are when the structure vibrates, and the sound quality is improved. Wherein the rigidity K of the structure is related to factors such as the material (expressed in Young's modulus E), the specific structural form and the like. In general, the stiffness K of a structure satisfies the relationship with the young' S modulus E of the material, the thickness t of the structure, and the area S of the structure: K.alpha.E.t.S. Obviously, the smaller the area S of the structure, the greater the rigidity K of the structure; the greater the thickness t of the structure, the greater the rigidity K of the structure. Therefore, increasing the young' S modulus E of the material, increasing the thickness t of the structure, decreasing the area S of the structure, or a combination thereof is beneficial to increasing the rigidity K of the structure, thereby being beneficial to increasing the resonant frequency of the structure and reducing the higher-order modes when the structure vibrates. Based on this, the Young's modulus of the first end wall 1113 and the second end wall 1114 may be greater than or equal to 2000MPa, preferably greater than or equal to 3000MPa, respectively; and/or the thickness of the first end wall 1113 and the second end wall 1114 may be between 0.3mm and 3mm, respectively, preferably between 0.5mm and 2.5 mm; and/or the areas of the first end wall 1113 and the second end wall 1114 may be between 200mm, respectively ² 500mm of ² Preferably between 300mm ² And 400mm ² So that the rigidity of both can be sufficiently large. In this manner, the higher order modes of vibration of the first end wall 1113 and the second end wall 1114 can be as small as possible, and the resonant frequencies of the leakage sounds generated by the two can be shifted toward the higher frequency band as much as possible, for example, greater than or equal to 4kHz, so that the user is insensitive to leakage sounds. Further, the difference between the stiffness of the first end wall 1113 and the stiffness of the second end wall 1114 may be small, so that the resonance frequencies of the leakage sounds generated by the first end wall 1113 and the second end wall 1114, respectively, can be as close as possible, and further so that the two cancel each other better in anti-phase in the far field, so as to reduce the leakage sounds of the earphone 10. Similarly, the Young's modulus of the vibration panel 114 may be greater than or equal to 3000MPa, preferably greater than or equal to 4000MPa; and/or the thickness of the vibration panel 114 may be between 0.3mm and 3mm, preferably between 0.5mm and 2.5 mm; and/or the area of the vibration panel 114 may be between 130mm ² And 400mm ² Preferably between 140mm ² And 300mm ² To make the rigidity of the vibration panel 114 sufficiently large, and thus to enable as few high-order modes as possible when the vibration panel 114 vibrates.

As an example, the ratio between the area of the mounting hole 1111 and the area of the first end wall 1113 may be less than or equal to 0.6, preferably less than or equal to 0.5, as viewed in the vibration direction of the transducer 112. In this manner, the stiffness of the first end wall 1113 and the stiffness of the second end wall 1114 are as similar as possible when the mounting aperture 1111 meets the mounting requirements of the connector 115, such that the resonant frequencies of the leakage sounds generated by the first end wall 1113 and the second end wall 1114, respectively, are as similar as possible. Further, the ratio between the difference between the area of the mounting hole 1111 and the area of the connector 115 and the area of the mounting hole 1111 may be greater than 0 and less than or equal to 0.5, preferably greater than 0 and less than or equal to 0.4, as viewed in the vibration direction of the transducer 112. In this way, when the mounting hole 1111 allows the connecting member 115 and the vibration panel 114 to move relative to the movement housing 111, the gap between the connecting member 115 and the first end wall 1113 is as small as possible, so as to avoid that the air in the accommodating cavity 100 is excessively transmitted to the outside of the earphone 10 through the mounting hole 1111 along with the sound wave formed by the vibration of the transducer 112 to form a sound leakage, i.e. to inhibit the sound cavity effect, thereby reducing the sound leakage of the earphone 10. Of course, since the phase of the sound wave transmitted to the outside of the earphone 10 through the mounting hole 1111 may be opposite to the phase of one of the leakage sounds generated by the first end wall 1113 and the second end wall 1114, respectively, so that the sound wave transmitted to the outside of the earphone 10 through the mounting hole 1111 may further adjust the phase of the leakage sounds generated by the first end wall 1113 and the second end wall 1114, respectively, to cancel in the far field, thereby reducing the leakage sound of the earphone 10.

As an example, the opening shape of the mounting hole 1111 and the cross-sectional shape of the connection member 115 may be the same regular shape. For example: the opening shape of the mounting hole 1111 and the cross-sectional shape of the connection member 115 are corresponding polygons such as regular polygons, that is, when the cross-sectional shape of the connection member 115 is square, regular hexagon, or the like, the opening shape of the mounting hole 1111 is also corresponding to square, regular hexagon, or the like. For another example: the opening shape of the fitting hole 1111 and the cross-sectional shape of the connector 115 are corresponding circular, elliptical, etc. Further, the gap between the connection member 115 and the first end wall 1113 (specifically, the wall surface of the mounting hole 1111) may be greater than 0 and less than or equal to 2mm, preferably greater than 0 and less than or equal to 1mm, more preferably greater than or equal to 0.1mm and less than or equal to 1mm, so that the gap between the connection member 115 and the first end wall 1113 is as small as possible when the mounting hole 1111 allows the connection member 115 and the vibration panel 114 to move relative to the deck housing 111. Here, when the number of the mounting holes 1111 and the connectors 115 is plural and one-to-one, for example, as shown in (b) and (c) of fig. 2, the gap between the connector 115 and the wall surface of the mounting hole 1111 may be defined as the sum of the gaps formed by the plural connectors 115 and the wall surface of the corresponding one of the mounting holes 1111, respectively. Of course, in other embodiments, the opening shape of the mounting hole 1111 and the cross-sectional shape of the connecting member 115 may be different regular shapes. For example: when the cross-sectional shape of the connection member 115 is a regular polygon such as a square, a regular hexagon, etc., the opening shape of the mounting hole 1111 may also be correspondingly circular; conversely, when the cross-sectional shape of the connector 115 is circular, the opening shape of the mounting hole 1111 may also correspond to a regular polygon such as a square, a regular hexagon, or the like. In other embodiments, the opening shape of the mounting hole 1111 and the cross-sectional shape of the connector 115 may have other irregular shapes. Wherein, in connection with FIG. 2, the present application is illustratively described with respect to a cross-sectional shape of the connector 115 being circular; accordingly, the opening shape of the mounting hole 1111 is also circular.

In some embodiments, such as in fig. 2 (a), the number of the connection members 115 may be one, and the connection members 115 may be connected with the central region of the vibration panel 114. At this time, the number of the mounting holes 1111 may be one, and the connector 115 may be inserted into the mounting hole 1111. In this way, under the same conditions, the communication area between the mounting hole 1111 and the outside of the cartridge housing 111 can be reduced to the maximum extent, and further sound waves generated by the vibration of the air in the accommodating cavity 100 along with the transducer 112 are prevented from being transmitted to the outside of the earphone 10 through the mounting hole 1111 to form sound leakage.

In other embodiments, such as in fig. 2 (b), the number of the connectors 115 may be plural, such as three, four, etc., and the plurality of connectors 115 may be spaced around the center line (e.g., shown as O in fig. 2 (b)) of the vibration panel 114 parallel to the vibration direction of the transducer 112. At this time, the number of the mounting holes 1111 may be plural, and the plural connection members 115 may be connected to the transducer 112 through the corresponding one of the mounting holes 1111. In this way, the reliability of the connection of the vibration panel 114 and the transducer 112 by the connection member 115 is advantageously improved. Further, the centers of the plurality of connectors 115 may fall on the same circle (i.e., co-circle), and the center of the circle (e.g., represented by O in fig. 2 (b)) may fall on the center line of the vibration panel 114 parallel to the vibration direction of the transducer 112. Wherein the plurality of connection members 115 may be uniformly spaced around a center line of the vibration panel 114 parallel to the vibration direction of the transducer 112.

In other alternative embodiments, such as in fig. 2 (c), the number of connectors 115 may be multiple, such as four, five, etc., wherein one connector 115 is connected to the central region of the vibration panel 114 and the remaining connectors 115 are spaced around the connectors 115 located in the central region of the vibration panel 114. At this time, the number of the mounting holes 1111 may be plural, and the plural connection members 115 may be connected to the transducer 112 through the corresponding one of the mounting holes 1111. In this way, it is also advantageous to improve the reliability of the connection of the vibration panel 114 and the transducer 112 by the connection member 115.

It should be noted that: in comparison with fig. 1, fig. 2 can be simply considered as an orthographic projection of the vibration panel 114 and the connecting member 115 along the vibration direction of the transducer 112.

In some embodiments, the accommodating chamber 100 communicates with the outside of the earphone 10 through a channel, which is a gap between the connector 115 and the wall surface of the mounting hole 1111. At this time, the deck module 11 may include a sealing film 118, and the sealing film 118 is used to seal the aforementioned channel, that is, a gap between the connecting member 115 and the wall surface of the mounting hole 1111 may be sealed by the sealing film 118, so as to prevent sound waves formed in the accommodating cavity 100 and conducted by air from propagating to the outside of the earphone 10 through the aforementioned channel to form a leakage sound. The sealing film 118 may be made of rubber, silica gel, polyvinyl chloride (Polyvinyl chloride, PVC), polycarbonate (PC), or polyether ether ketone (PEEK).

As an example, referring to fig. 35, the sealing film 118 may include a first connection portion 1181, a pleated portion 1182, and a second connection portion 1183 integrally connected, wherein the pleated portion 1182 forms a concave region between the first connection portion 1181 and the second connection portion 1182. At this time, the first connection part 1181 may be connected to the first end wall 1113, and the second connection part 1183 may be connected to the connector 115 or the vibration panel 114. Thus, compared with a planar film structure (for example, the portion where the concave region is located is planar), the non-planar film structure with the folded ring is beneficial to increasing the elasticity of the sealing film 118, so that mechanical vibration generated by the transducer 112 is not only beneficial to avoiding excessive transmission of mechanical vibration to the cartridge housing 111 via the sealing film 118, but also beneficial to avoiding "tearing" of the sealing film 118 due to excessive amplitude of relative motion between the connector 115 or the vibration panel 114 and the cartridge housing 111, or "jolt" of the sealing film 118 due to excessive or insufficient sound pressure in the accommodating cavity 100, or fatigue failure due to excessive sound pressure variation in the accommodating cavity 100. In addition, the movement housing 111 may be provided with a pressure relief hole for balancing the sound pressure in the accommodating cavity 100 to maintain the pressure at a level less varying with respect to the atmospheric pressure, so as to prolong the service life of the sealing membrane 118. Wherein the area of the pressure relief hole can be smaller than or equal to 4mm ² . Notably, are: the provision of the sealing film 118 is advantageous in increasing the gap between the connecting member 115 and the wall surface of the mounting hole 1111, that is, the opening area of the mounting hole 1111 may be set larger than the cross-sectional area of the connecting member 115, thereby being advantageous in avoiding unnecessary wear between the connecting member 115 and the deck housing 111, and further extending the service life of the deck module 11.

It should be noted that: referring to fig. 46 and 35, the sealing film 118 may be connected to only the first end wall 1113, that is, a gap may be left between the sealing film 118 and the connecting member 115, but the gap is smaller than a gap between the connecting member 115 and a wall surface of the mounting hole 1111, so that not only a communication area between the housing chamber 100 and the outside of the earphone 10 can be reduced, but also the sound pressure in the housing chamber 100 can be balanced to maintain a level that does not vary much with respect to the atmospheric pressure.

Based on the above description, during the process of generating mechanical vibration by the transducer 112, the core housing 111 (specifically, the first end wall 1113 and the second end wall 1114) and the vibration panel 114 may further form multiple sets of acoustic dipoles, that is, two sets of acoustic dipoles with opposite phases may cancel each other, so as to reduce the leakage of the earphone 10. Based on this, the ratio between the absolute value of the difference between the rigidity of the vibration panel 114 and the rigidity of the first end wall 1113 and the larger of the rigidity of the vibration panel 114 and the rigidity of the first end wall 1113 may be between 0 and 0.4, preferably between 0 and 0.3; and/or the ratio between the absolute value of the difference between the stiffness of the vibration panel and the stiffness of the second end wall and the greater of the stiffness of the vibration panel and the stiffness of the second end wall is between 0 and 0.4, preferably between 0 and 0.3. In this manner, the resonant frequency of the leakage sound generated by the vibration panel 114 and the resonant frequency of the leakage sound generated by the first end wall 1113 and/or the second end wall 1114 can be as close as possible, so that the two are better anti-phase and anti-phase in the far field, thereby reducing the leakage sound of the earphone 10.

As an example, the ratio between the area of the vibration panel 114 and the area of the first end wall 1113 may be between 0.3 and 1.6, preferably between 0.5 and 1.2, viewed in the vibration direction of the transduction device 112. In other words, after the structure of the deck housing 111 is determined, the area of the vibration panel 114 and the area of the first end wall 1113 may not be greatly different so that the rigidity of the vibration panel 114 and the rigidity of the first end wall 1113 are as close as possible. In addition, the area of the vibration panel 114 is too small, which may affect the mechanical vibration generated by the transducer 112 transmitted by the vibration panel 114, further affect the intensity of bone conduction generated by the earphone 10, and may cause wearing discomfort due to too small contact surface between the skin of the user and the movement module 11, further affect the wearing comfort of the earphone 10; the excessive area of the vibration panel 114 may affect the rigidity of the vibration panel 114, further affect the sound quality of the earphone 10, or may cause the vibration panel 114 to be affected too much by the skin contour to be difficult to be closely attached to the skin of the user, further affect the intensity of bone conduction generated by the earphone 10.

Generally, for an acoustic dipole, the smaller the distance between two monopoles with opposite phases, the more obvious the effect of anti-phase cancellation, i.e. the smaller the sound pressure in the far field; accordingly, the less leakage sound in the far field is for the earphone 10. Of course, considering the structural strength of the vibration panel 114, the structural interference between the vibration panel 114 and the cartridge case 111 during the vibration of the transducer 112, and the space requirement of the structural members such as the transducer 112 disposed in the cartridge case 111, the distance between the two monopoles is difficult to be zero. Thus, in the vibration direction of the transduction device 112, the thickness of the vibration panel 114 may be between 0.3mm and 3mm, preferably between 0.5mm and 2.5mm, which is too small to be sufficiently rigid for the vibration panel 114; and/or, the gap between the vibration panel 114 and the first end wall 1113 may be between 0.5mm and 3mm, preferably between 1mm and 2mm, which is too small to easily cause the vibration panel 114 to collide with the deck housing 111 to form a sound breaking; and/or the spacing between the side of the first end wall 1113 facing away from the second end wall 1114 and the side of the second end wall 1114 facing away from the first end wall 1113 may be between 6mm and 16 mm.

Referring to fig. 3, the deck module 11 may further include a peripheral edge 116 connected to an end of the deck housing 111 near the vibration panel 114, for example, the peripheral edge 116 is connected to an end of the inner cylinder wall 1112 far from the second end wall 1114, for example, the peripheral edge 116 is connected to the first end wall 1113, and the peripheral edge 116 may encircle the vibration panel 114 to avoid the vibration panel 114 from falling off. In other words, the peripheral edge 116 is connected to the deck case 111, and the projection of the peripheral edge 116 on a reference plane perpendicular to the vibration direction of the transducer 112 surrounds the periphery of the projection of the vibration panel 114 on the aforementioned reference plane. Wherein, in the non-wearing state, the surrounding edge 116 is spaced from the vibration panel 114 in a direction perpendicular to the vibration direction of the transducer 112, so as to avoid the surrounding edge 116 from obstructing the vibration of the vibration panel 114 along with the transducer 112; and a side of the vibration panel 114 facing away from the transducer 112 protrudes at least partially beyond the peripheral edge 116 facing away from the transducer 112 in the vibration direction of the transducer 112 to allow the vibration panel 114 to closely conform to the skin of the user, thereby increasing the strength of the bone conduction sound generated by the earphone 10. Further, in wearingIn the wearing state, besides the vibration panel 114 contacting the skin of the user, the peripheral edge 116 may also contact the skin of the user, that is, at least part of the peripheral edge 116 contacts the skin of the user together with the vibration panel 114, so as to share the pressing force applied by part of the movement module 11 to the skin of the user, so that the vibration panel 114 can vibrate along with the transducer 112, thereby improving the sound quality of the earphone 10, especially in the low frequency band. In other words, the movement module 11 is provided with the surrounding edge 116, which is beneficial to considering wearing stability, comfort and tone quality. Therefore, the pressing force of the vibration panel 114 on the cheek of the user may be smaller than the pressing force of the head beam assembly 12 to press the movement module 11 against the cheek of the user, and the contact area of the vibration panel 114 and the cheek of the user may be smaller than the contact area of the movement module 11 and the cheek of the user. When the movement module 11 is provided with the surrounding edge 116, the pressing force of the movement module 11 pressed against the cheek of the user may be equal to the sum of the pressing force of the vibration panel 114 against the cheek of the user and the pressing force of the surrounding edge 116 against the cheek of the user, and the contact area of the movement module 11 and the cheek of the user may be equal to the contact area of the vibration panel 114 and the cheek of the user and the contact area of the surrounding edge 116 and the cheek of the user; when the movement module 11 is not provided with the peripheral edge 116 and is only contacted with the cheek of the user through the vibration panel 114, the pressing force of the movement module 11 pressed against the cheek of the user may be equal to the pressing force of the vibration panel 114 against the cheek of the user, and the contact area of the movement module 11 and the cheek of the user may be equal to the contact area of the vibration panel 114 and the cheek of the user. Based on this, the head beam assembly 12 mentioned later can apply a pressing force between 0.4N and 0.8N to press the movement module 11 against the cheek of the user, and the pressing force of the vibration panel 114 against the cheek of the user can be between 0.1N and 0.7N; the contact area between the movement module 11 and the cheek of the user can be 400mm ² And 600mm ² Preferably between 450mm ² And 550mm ² Between them; the area of contact of the vibration panel 114 with the user's cheek may be between 180mm ² And 300mm ² Preferably between 160mm ² And 280mm ² Between them.

Further, a side of the movement housing 111 near the vibration panel 114, the vibration panel 114 and the surrounding edge 116 may enclose a cavity 400, for example, the surrounding edge 116, the first end wall 1113 and the vibration panel 114 enclose a cavity 400, and the surrounding edge 116 may be provided with a communication hole 1161 for communicating the cavity 400 with the outside of the movement module 11, so that in a wearing state, the cavity 400 is communicated with the outside of the movement module 11 through the communication hole 1161. In other words, the peripheral edge 116 may be provided with a communication hole 1161, where the communication hole 1161 is used to communicate a gap between the vibration panel 114 and the cartridge housing 111 (e.g. the first end wall 1113) with the outside of the earphone 10, so that the leakage sound generated by the first end wall 1113 and the leakage sound generated by the second end wall 1114 cancel in the far-field opposite phase, that is, the leakage sound generated by two opposite sides of the cartridge housing 111 can cancel in the far-field opposite phase, so as to better meet the requirement of the earphone 10 for reducing the leakage sound. The number of the communication holes 1161 may be plural, for example, the plural communication holes 1161 are spaced around the connecting member 115, and for example, the opening ratio of the communication holes 1161 on the peripheral edge 116 is greater than or equal to 30%, so that the leakage sound generated by the first end wall 1113 propagates out more and is opposite to the leakage sound generated by the second end wall 1114 in the far field. The aperture ratio may be the product of the area of the single communication hole 1161 and the number of communication holes 1161 divided by the area of the peripheral edge 116. Further, at least a part of the plurality of communication holes 1161 is not in contact with the skin of the user in the wearing state, so that the leakage sound generated by the first end wall 1113 propagates out through the communication holes 1161. Thus, with reference to fig. 3, the communication hole 1161 may be formed in a side surface of the peripheral edge 116; referring to fig. 27 or 32, the communicating hole 1161 may be formed in the connecting portion 1162, the first outer cylinder wall 1115 is provided with a relief hole corresponding to the communicating hole 1162, and the communicating hole 1161 may be formed in a portion of the stopper 1164 not contacting the skin of the user; referring to fig. 52, the communication hole 1161 may be formed at a portion of the peripheral edge 116 not in contact with the skin of the user. In addition, since the cavity 400 and the communication hole 1161 can form a helmholtz resonant cavity, increasing the aperture ratio of the communication hole 1161 on the peripheral edge 116 is beneficial to shift the resonance peak of the cavity 400 toward a frequency band with higher frequency when the cavity resonates, so that the leakage sound felt by the user is reduced. Notably, are: in the wearing state, the opening direction of at least one communication hole 1161 may deviate from the top of the user's head, for example, an angle between the opening direction of the communication hole 1161 and the vertical axis of the user is between 0 and 10 °, so that liquid such as sweat of the user may be retained through the communication hole 1161, that is, sweat is prevented from being retained in the movement module 11. Of course, the leakage sound generated by the first end wall 1113 may also be transmitted through the gap between the peripheral edge 116 and the vibration panel 114 in the direction perpendicular to the vibration direction of the transducer 112, and further cancel the leakage sound generated by the second end wall 1114 in the far-field opposite phase, which will be described in the following exemplary manner.

As an example, at 500Hz to 4kH _z Within the frequency range of (2) there is a target frequency range with a span length of at least 1/3 octave. Based on this, in the aforementioned target frequency range, the leakage sound generated in the wearing state of the earphone 10 when the communication hole 1161 is in the open state is weaker than the leakage sound generated in the wearing state of the earphone 10 when the communication hole 1161 is in the closed state. Wherein the target frequency range may be 1kH _z To 2kHz. It should be noted that: the aforementioned communication hole 1161 being in the closed state may mean that the communication hole 1161 is blocked.

Further, there may be at least one communication hole 1161 per square millimeter of the peripheral edge 116, so that the number of communication holes 1161 on the peripheral edge 116 is sufficiently large, but the area of a single communication hole 1161 is not particularly large, which is advantageous for ensuring the structural strength of the peripheral edge 116. Of course, in other embodiments where the structural strength of the peripheral edge 116 is sufficient, the area of the single communication hole 1161 may be relatively large.

In some embodiments, the peripheral edge 116 may be a plastic piece, and the wall thickness of the peripheral edge 116 may be between 0.2mm and 1 mm. Wherein if the wall thickness of the peripheral edge 116 is too small, it is liable to cause insufficient structural strength; if the wall thickness of the peripheral edge 116 is too large, it is likely to cause the peripheral edge 116 to contact the skin of the user prior to the vibration panel 114, thereby making it difficult for the vibration panel 114 to contact the skin of the user. Of course, where it is ensured that the vibration panel 114 is in contact with the user's skin, the portion of the peripheral edge 116 for contact with the user's skin may be thicker than other portions, for example, the portion of the peripheral edge 116 for contact with the user's skin has a wall thickness of greater than 1mm, to avoid collapse of the peripheral edge 116 when squeezed in the worn state. Further, when the surrounding edge 116 is a plastic part, the plastic part can be formed on a metal frame by injection molding process to structurally reinforce the surrounding edge 116.

In some embodiments, the peripheral edge 116 may be a metal piece to allow the aperture ratio of the communication hole 1161 on the peripheral edge 116 to be greater than or equal to 60%, mainly because the structural strength of the metal piece may be higher than that of the plastic piece. For example: the peripheral edge 116 is a wire mesh having a mesh number (i.e., mesh holes per inch) of between 5 and 508.

In some embodiments, the movement housing 111 may be a first plastic part, the peripheral edge 116 may be connected to the movement housing 111 by a second plastic part, and the second plastic part and a metal part are integrally formed through an injection molding process, and the communication hole 1161 may be formed in the metal part.

With reference to fig. 43 or 44, the peripheral edge 116 may have an uneven area on the outer surface of the side facing the skin of the user in the worn state, so that the peripheral edge 116 does not completely fit with the skin of the user when in contact with the skin of the user, that is, a gap is left between the peripheral edge 116 and the skin of the user, thereby allowing the cavity 400 to communicate with the outside of the movement module 11. In this way, the leakage sounds generated by the opposite sides of the deck 111 (e.g., the first end wall 1113 and the second end wall 1114) can be cancelled in opposite phases in the far field, so as to meet the requirement of the earphone 10 for reducing the leakage sounds. The height difference between the uneven areas may be between 0.5mm and 5mm, so that the cavity 400 and the exterior of the deck module 11 have a sufficient communication gap.

In some embodiments, and with reference to fig. 43, a groove 1165 may be provided on the outer surface of the peripheral edge 116, and in the worn state, the cavity 400 communicates with the outside of the deck module 11 through the groove 1165. The number, depth, etc. of the grooves 1165 affect the communication area between the cavity 400 and the exterior of the deck module 11. For example: the projection of the peripheral edge 116 in a reference plane perpendicular to the vibration direction of the transducer 112 has a major axis direction and a minor axis direction orthogonal to each other, the dimension of the peripheral edge 116 in the major axis direction is larger than the dimension of the peripheral edge 116 in the minor axis direction, the number of grooves 1165 may be plural, the plurality of grooves 1165 may be divided into four groups, two groups of grooves 1165 are respectively arranged at intervals in the major axis direction, the other two groups of grooves 1165 are respectively arranged at intervals in the minor axis direction, and the number of grooves 1165 of each group arranged at intervals in the major axis direction may be larger than the number of grooves 1165 of each group arranged at intervals in the minor axis direction. For convenience of distinction and description, the area where the groove 1165 is located in fig. 43 is filled with the mesh, that is, the area where one mesh is located may be simply regarded as one groove 1165. For another example: the depth of groove 1165 may be between 0.5mm and 5 mm.

In some embodiments, in conjunction with fig. 44, a protrusion 1166 may be provided on an outer surface of the peripheral edge 116, where the protrusion 1166 forms a gap between the peripheral edge 116 and the skin of the user in the wearing state, and the cavity 400 communicates with the outside of the cartridge module 11 through the aforementioned gap. The number, height, etc. of the protrusions 1166 also affect the communication area between the cavity 400 and the exterior of the movement module 11. For example: the number of the protrusions 1166 is plural, and the plurality of protrusions 1166 makes the aforementioned gaps in a grid shape. For convenience of distinction and description, the area where the bump 1166 is filled with the mesh in fig. 44, that is, the area where one mesh is located may be simply regarded as one bump 1166. For another example: the height of the protrusions 1166 may be between 0.5mm and 5 mm.

Similarly, within the frequency range of 500Hz to 4kHz, there is a target frequency range with a span length of at least 1/3 octave. Based on this, in the aforementioned target frequency range, the leakage sound generated by the earphone 10 in the wearing state when the outer surface of the surrounding edge 116 has the uneven region is weaker than the leakage sound generated by the earphone 10 in the wearing state when the outer surface of the surrounding edge 116 does not have the uneven region. Wherein the aforementioned target frequency range may be 1kHz to 2kHz. It should be noted that: the region having no unevenness on the outer surface of the peripheral edge 116 may be referred to as filling up the region having unevenness on the outer surface of the peripheral edge 116. For example: the grooves 1165 or between the protrusions 1166 are filled with glue, and after the glue is cured, the areas on the outer surface of the peripheral edge 116 that are not provided with the irregularities can be simply considered.

In connection with fig. 45, the side of the rim 116 facing the skin of the user in the worn state may be provided with a porous structure 1167, such that in the worn state, the porous structure 1167 at least partially contacts the skin of the user together with the vibration panel 114 and allows the cavity 400 to communicate with the outside of the deck module 11. In this way, the leakage sounds generated by the opposite sides of the deck 111 (e.g., the first end wall 1113 and the second end wall 1114) can be cancelled in opposite phases in the far field, so as to meet the requirement of the earphone 10 for reducing the leakage sounds.

Further, the porous structure 1167 may include a fixing layer and a porous body layer connected to the fixing layer, the porous structure 1167 is connected to the peripheral edge 116 through the fixing layer, and the porous structure 1167 communicates with the outside of the cartridge module 11 through the porous body layer. The porosity of the porous body layer may be greater than or equal to 60%, for example, the porous body layer may be a sponge or foam.

In some embodiments, the fixing layer of the porous structure 1167 and the peripheral edge 116 may be detachably connected, and the connection manner between the fixing layer and the peripheral edge may be any of magnetic attraction type, fastening type and adhesive type. The bonding type can be realized by any one of magic tape, single-sided adhesive tape and double-sided adhesive tape.

In some embodiments, the securing layer of the porous structure 1167 may be a cured glue, i.e., the porous structure 1167 is secured to the peripheral edge 116 by the glue. At this time, since the porous structure 1167 is inconvenient to replace, in order to extend the service life of the porous structure 1167, the porous structure 1167 may include a protective layer covering the porous body layer of the porous structure 1167, and the porous structure 1167 is in contact with the skin of the user through the aforementioned protective layer. Wherein the protective layer can be provided as a textile or a steel mesh.

Similarly, within the frequency range of 500Hz to 4kHz, there is a target frequency range with a span length of at least 1/3 octave. Based on this, in the aforementioned target frequency range, the leakage sound generated by the earphone 10 in the wearing state when the deck module 11 has the porous structure 1167 is weaker than the leakage sound generated by the earphone 10 in the wearing state when the deck module 11 does not have the porous structure 1167. Wherein the target frequency range is 1kHz to 2kHz. It should be noted that: the absence of the cellular structure 1167 from the cartridge module 11 may refer to removal of the cellular structure 1167 from the peripheral edge 116. For example: when the porous structure 1167 is detachably connected with the surrounding edge 116, the porous structure 1167 is detached, and when the porous structure 1167 is fixed on the surrounding edge 116 through glue, the porous structure 1167 is scraped off by a knife.

It should be noted that: in embodiments such as where the peripheral edge 116 is provided with grooves 1165, protrusions 1166 and porous structures 1167, the peripheral edge 116 may also be provided with communication holes 1161 that communicate the cavity 400 with the outside of the deck module 11, so that in the worn state, the cavity 400 is further in communication with the outside of the deck module 11 through the communication holes 1161. The number of the communicating holes 1161 may be plural, and the aperture ratio of the communicating holes 1161 on the peripheral edge 116 may be 30% or more.

Referring to fig. 4, a spacer 117 may be further disposed between the vibration panel 114 and the first end wall 1113, and the spacer 117 may have a rockwell hardness smaller than that of the first vibration-transmitting sheet 113. In other words, the pad 117 may also be referred to as a soft pad as compared to the first vibration-transmitting sheet 113. In this way, the mechanical vibration generated by the transducer 112 is prevented from being transmitted to the deck 111 via the pad 117, thereby further reducing the leakage of the earphone 10. Wherein the gasket 117 may have an adhesive property, such as a foam, to connect the vibration panel 114 and the first end wall 1113, and also prevent the vibration panel 114 from falling off.

It should be noted that: the inventor of the application discovers in long-term research that the surrounding edge 116 is additionally arranged on the movement module 11, which is beneficial to the offset of the leakage sound to the middle-high frequency band; the pad 117 is added to the movement module 11, which is beneficial to the shift of the leakage sound to the middle and low frequency bands, and is beneficial to the improvement of the leakage sound. Further, in the application, the frequency range corresponding to the low frequency band can be 20-150Hz, the frequency range corresponding to the medium frequency band can be 150-5kHz, and the frequency range corresponding to the high frequency band can be 5k-20kHz. The frequency range corresponding to the middle and low frequency bands can be 150-500Hz, and the frequency range corresponding to the middle and high frequency bands can be 500-5kHz.

Referring to fig. 5 to 7, a side of the vibration panel 114 facing away from the transducer 112 may include a skin contact area 1141 for contacting the skin of the user and an air conduction enhancing area 1142 at least partially not contacting the skin of the user, and the vibration panel 114 may vibrate air outside the earphone 10 through the air conduction enhancing area 1142 to form sound waves. In other words, the deck module 11 generates both bone conduction sound and air conduction sound through the vibration panel 114, and the phases of the two sound conduction sounds are the same, so as to allow the air conduction sound to enhance the bone conduction sound, thereby improving the sound quality of the earphone 10. Wherein the air conduction enhancing region 1142 may be at least partially inclined with respect to the skin contact region 1141 and extend towards the transduction device 112, and the inclination angle of the air conduction enhancing region 1142 with respect to the skin contact region 1141 (e.g. shown as θ in fig. 5 and 6) may be between 0 and 75 °, preferably between 0 and 60 °; and/or the width of the orthographic projection of the air conduction enhancing region 1142 in the vibration direction of the transduction device 112 (e.g., as shown by W in fig. 5 to 7) may be greater than or equal to 1mm, preferably greater than or equal to 2mm. Thus, the size of the air conduction enhancing region 1142 is increased, so as to enhance the bone conduction effect of the air conduction sound. Further, the air conduction enhancing region 1142 may be configured as a curved surface (e.g., as shown in fig. 5) or may be configured as a flat surface (e.g., as shown in fig. 6).

In some embodiments, such as fig. 5, the air conduction enhancement zone 1142 may be all inclined with respect to the skin contact zone 1141 and extend toward the transduction device 112.

In other embodiments, such as in fig. 6, the air conduction enhancement zone 1142 may be inclined (i.e., θ+.0) with respect to the skin contact zone 1141 in part and extend toward the transduction device 112, with another part being spaced from the skin contact zone 1141 in the direction of vibration of the transduction device 112, such as parallel to the skin contact zone 1141 (i.e., θ=0). Further, when the movement case 111 is provided with the peripheral edge 116, as shown in fig. 27, the peripheral edge 116 may partially overlap the air conduction enhancing region 1142 and be offset from the skin contact region 1141, as viewed in the vibration direction of the transducer 112, so as to allow the peripheral edge 116 to stop the vibration panel 114 in the vibration direction of the transducer 112.

In other alternative embodiments, such as fig. 7, the air conduction enhancement zone 1142 is at least partially directed toward the entrance of the external auditory canal of the user's ear in the worn state to allow sound waves generated by the vibration panel 114 to be directed toward the entrance of the external auditory canal, thereby increasing the enhancement of bone conduction by air conduction. As an example, the vibration panel 114 has a major axis direction and a minor axis direction perpendicular to the vibration direction of the transducer 112 and orthogonal to each other, and the dimension of the vibration panel 114 in the foregoing major axis direction is larger than the dimension of the vibration panel 114 in the foregoing minor axis direction, for example, the vibration panel 114 is arranged in an elliptical shape or a rounded rectangular shape or a racetrack shape as viewed in the vibration direction. In the wearing state, the long axis direction points to the top of the head of the user, and the short axis direction points to the entrance of the external auditory canal of the ear of the user. In this way, the core module 11 may be integrally closer to the external auditory canal in the wearing state, so that the core module 11 can transmit the mechanical vibration generated by the transducer 112 in a bone conduction manner and simultaneously cause the air in the external auditory canal to vibrate (i.e. air-induced sound) more, thereby increasing the volume of the sound heard by the user.

Referring to fig. 8 to 10, the deck module 11 may be provided with an acoustic chamber in communication with the accommodating chamber 100, and the acoustic chamber is used for absorbing acoustic energy of sound waves formed by the air in the accommodating chamber 100 vibrating with the transducer 112. The sound wave may be output to the outside of the earphone 10 through the mounting hole 1111 to form an air-guide sound.

In some embodiments, such as fig. 8, the frequency response curve of the acoustic wave has a resonance peak, and the acoustic cavity may be a helmholtz resonator 200 to attenuate the intensity of the resonance peak (specifically, may be the peak resonance intensity), that is, to suppress the sudden increase of the peak resonance intensity, so that the sound quality of the earphone 10 is more balanced. Wherein the peak resonance frequency of the aforementioned resonance peak may be between 500Hz and 4kHz, preferably between 1kHz and 2 kHz. As an example, the helmholtz resonator 200 may be arranged on the cartridge housing 111, for example on the side of the second end wall 1114 facing away from the transduction means 112; and/or the helmholtz resonator 200 may be provided on the transduction device 112 (e.g. its magnetic circuit). Of course, in other embodiments, such as those that emphasize a certain frequency point or band, the helmholtz resonator 200 may be configured to attenuate the vibration intensity of the aforementioned frequency response curve of the air guide sound within a preset frequency band, which may not cover the aforementioned resonance peak. The difference between the intensity of the resonance peak when the opening of the helmholtz resonator 200 communicating with the accommodating chamber 100 is in an open state and the intensity of the resonance peak when the opening of the helmholtz resonator 200 communicating with the accommodating chamber 100 is in a closed state may be greater than or equal to 3dB, and the corresponding frequency response curve may be measured under the condition that the excitation voltage is 1V.

In other embodiments, such as fig. 9 and 10, the acoustic chamber may be an acoustic filter 300, and the cut-off frequency of the acoustic filter 300 may be less than or equal to 5kHz, preferably less than or equal to 4kHz, to attenuate acoustic energy in a frequency band having a frequency greater than the cut-off frequency. As an example, in connection with fig. 9, the acoustic filter 300 may be located on the side of the transduction device 112 facing away from the vibration panel 114, i.e. the rear acoustic filter. Referring to fig. 10, the acoustic filter 300 may be located at a side of the transduction device 112 facing the vibration panel 114, i.e., a front acoustic filter. For example: the first end wall 1113 may include a first sub-end wall 11131 and a second sub-end wall 11132 disposed at intervals in the vibration direction of the transducer 112, and the mounting hole 1111 penetrates the first sub-end wall 11131 and the second sub-end wall 11132 in the vibration direction of the transducer 112, and the first sub-end wall 11131 and the second sub-end wall 11132 cooperate with the inner cylinder wall 1112 to form the acoustic filter 300. Wherein the gap of the first sub-end wall 11131 and the second sub-end wall 11132 in the vibration direction of the transducer 112 may be between 0.5mm and 5mm, preferably between 1mm and 3 mm.

Referring to fig. 11, the transduction apparatus 112 may include a bracket 1121, a second vibration-transmitting sheet 1122, a magnetic circuit, and a coil 1123, the bracket 1121 being connected to the deck housing 111 through the first vibration-transmitting sheet 113, the second vibration-transmitting sheet 1122 connecting the bracket 1121 and the magnetic circuit to suspend the magnetic circuit in the receiving chamber 100, the coil 1123 being connected to the bracket 1121 and extending into a magnetic gap of the magnetic circuit in a vibration direction of the transduction apparatus 112. At this time, the vibration panel 114 may be connected to the bracket 1121 through the connection member 115. As an example, the peripheral region of the first vibration-transmitting plate 113 may be connected to the deck case 111, and the central region of the first vibration-transmitting plate 113 may be connected to the bracket 1121; the peripheral region of the second vibration-transmitting piece 1122 may be connected to the bracket 1121, and the central region of the second vibration-transmitting piece 1122 may be connected to the magnetic circuit system. Of course, in other embodiments, the peripheral region of the second vibration-transmitting sheet 1122 may be connected to the magnetic circuit system, and the central region of the second vibration-transmitting sheet 1122 may be connected to the bracket 1121. At this time, the magnetic circuit may be connected to the peripheral region of the second vibration-transmitting sheet 1122 through a tubular connector. Wherein, the magnetic circuit system can comprise a magnetic conduction cover 1124 and a magnet 1125 connected with the bottom of the magnetic conduction cover 1124, and one or at least two magnets 1125 can be arranged according to the requirement; the magnet 1125 may be connected to a central region of the second vibration-transmitting piece 1122 and spaced apart from the magnetically conductive cover 1124 in a direction perpendicular to the vibration direction of the transducer 112 to form the aforementioned magnetic gap, with the coil 1123 extending between the magnet 1125 and the magnetically conductive cover 1124. Notably, are: in some embodiments, such as those in which the inner side of the magnetically permeable cover 1124 is provided with a ring-shaped magnet surrounding the magnet 1125, although a magnetic gap is formed specifically between the ring-shaped magnet and the magnet 1125, the magnetic gap is still located between the magnetically permeable cover 1124 and the magnet 1125, and thus may still be regarded as a magnetic gap formed by the magnet 1125 and the magnetically permeable cover 1124 being spaced apart in a direction perpendicular to the direction of vibration of the transducer 112.

In some embodiments, referring to fig. 27 and 28, a central region of the first vibration-transmitting plate 113 may be nested on the bracket 1121, and a peripheral region of the first vibration-transmitting plate 113 may be pressed against the inner cylinder wall 1112 by the first end wall 1113; a central region of the second vibration-transmitting sheet 1122 may be nested on the bracket 1121, and a peripheral region of the second vibration-transmitting sheet 1122 may be fixed on a tubular connector, farther from the vibration panel 114 than the first vibration-transmitting sheet 113; the side wall of the magnetic conduction cover 1124 of the magnetic circuit system can be connected with the cylindrical connecting piece, so that the magnetic circuit system is connected with the bracket 1121 through the second vibration transmission piece 1122; the coil 1123 is connected to a side of the bracket 1121 facing away from the first vibration-transmitting plate 113 and the second vibration-transmitting plate 1122, and extends into a magnetic gap between the magnetic cover 1124 and the magnet 1125. At this time, since the side wall of the magnetic conductive cover 1124 is connected to the second vibration transmitting sheet 1122 through a tubular connection, a cavity is formed inside the transducer 112, and the cavity is only communicated with the accommodating cavity 100 through the hollowed-out area on the second vibration transmitting sheet 1122 without any other structural improvement, so that the transducer 112 has a serious acoustic cavity effect in the vibration process, and thus causes a larger leakage sound.

In some embodiments, referring to fig. 46 and 11, the bracket 1121 may be connected to the cartridge case 111 through the first vibration-transmitting piece 113, the second vibration-transmitting piece 1122 may be connected to the first vibration-transmitting piece 113 through the bracket 1121, the magnetic circuit may be connected to a central region of the second vibration-transmitting piece 1122 to suspend the magnetic circuit in the accommodating cavity, and the coil 1123 extends into a magnetic gap of the magnetic circuit along the vibration direction of the transducer 112. The magnetic gap surrounds the position where the magnetic circuit is connected to the second vibration-transmitting plate 1122. In this way, the magnetic circuit system is connected to the central area of the second vibration transmitting sheet 1122, so that the magnetic circuit system does not need to be provided with a tubular connecting piece connected to the peripheral area of the second vibration transmitting sheet 1122, that is, the tubular connecting piece is eliminated, so as to allow the inside and outside of the transducer 112 to have a larger communication area, which is beneficial to suppressing the acoustic cavity effect and further improving the sound leakage of the earphone 10. For example: the magnet 1125 of the magnetic circuit is connected to the central region of the second vibration-transmitting piece 1122, and thus the side wall of the magnetic conductive cover 1124 and the second vibration-transmitting piece 1122 can be disposed at intervals in the vibration direction of the transducer 112, so as to form a channel for communicating the magnetic gap with the outside of the magnetic circuit, and further increase the area for communicating the inside and outside of the transducer 112.

As an example, referring to fig. 47 and 46, the bracket 1121 may include a first bracket 11212 and a second bracket 11213, the first bracket 11212 may be connected to a central region of the first vibration-transmitting sheet 113, and the second bracket 11213 may be connected to a peripheral region of the second vibration-transmitting sheet 1122. Accordingly, the second bracket 11213 and the vibration panel 114 may be connected to the first bracket 11212, respectively, and the coil 1123 may be connected to the second bracket 11213. At this time, since the coil 1123 is connected to the second bracket 11213 at a position corresponding to the peripheral region of the second vibration-transmitting piece 1122, the above-described magnetic gap can surround the central region where the magnetic circuit is connected to the second vibration-transmitting piece 1122. The first support 11212 and the first vibration-transmitting sheet 113 may be integrally formed by a metal insert injection molding process, and the second support 11213 and the second vibration-transmitting sheet 1122 may be integrally formed by a metal insert injection molding process. Accordingly, one of the first support 11212 and the second support 11213 may be provided with a socket, and the other may be provided with a socket post inserted into the socket, and the socket post extends into the socket, so that the first support 11212 and the second support 11213 are connected. In this embodiment, the first bracket 11212 and the second bracket 11213 are provided with the insertion holes 11215 and the insertion posts 11216, respectively.

Further, the transduction device 112 may include a suspension 11214, the suspension 11214 is connected to a central region of the second vibration-transmitting piece 1122, the second bracket 11213 is located at the periphery of the suspension 11214 and spaced apart from the suspension 11214 in a direction perpendicular to the vibration direction of the transduction device 112, and the magnet 1125 of the magnetic circuit system may be connected to the suspension 11214. As such, the magnetic gap between the magnetically permeable cover 1124 and the magnet 1125 surrounds the central region of the magnet 1125 where it is connected to the second vibration transmitting plate 1122.

Further, the magnet 1125 may be a permanent magnet, and may also include a first magnetic member 11251, a magnetic conductive member 11252, and a second magnetic member 11253 stacked along the vibration direction of the transducer 112, where the second magnetic member 11253 is closer to the second vibration transmitting plate 1122 than the first magnetic member 11251, for example, the first magnetic member 11251 is connected to the bottom of the magnetic conductive cover 1124. Wherein the magnetization directions of the first magnetic member 11251 and the second magnetic member 11253 are different, for example, the magnetization directions of the two are opposite to each other. Further, the side wall of the magnetically permeable cover 1124 may overlap at least the magnetically permeable member 11252 when being orthographically projected to the outer circumferential surface of the magnet 1125 in a direction perpendicular to the vibration direction of the transducer 112, so that the magnetic field formed by the magnet 1125 is more concentrated in the aforementioned magnetic gap, thereby reducing leakage sound. Preferably, the coil 1123 may overlap at least the magnetic permeable member 11252 when orthographic projected to the outer circumferential surface of the magnet 1125 in a direction perpendicular to the vibration direction of the transduction device 112, so that the magnetic field formed by the magnet 1125 passes through the coil 1123 more, thereby increasing the utilization rate of the magnetic field.

Further, the magnetic conductive cover 1124 may be provided with a communication hole 11241 for communicating the magnetic gap with an external space of the magnetic circuit system, so as to increase the area of internal and external communication of the transducer 112, thereby weakening the acoustic cavity effect. Of course, the bracket 1121 may be provided with a communication hole 11211 extending along the vibration direction of the transducer 112, and the tubular coupling member may be provided with a through hole extending along a direction perpendicular to the vibration direction of the transducer 112, so as to further increase the area of communication between the inside and the outside of the transducer 112 and further reduce the acoustic cavity effect. This is because the transducer 112 compresses or expands air on opposite sides in the direction of vibration thereof during the generation of mechanical vibration, that is, positive and negative sound pressures are generated; the communication holes can allow air on opposite sides of the transducer 112 to communicate, thereby eliminating the opposite phase.

In some embodiments, in the non-wearing state, the frequency response curve of the vibration panel 114 has a resonance valley, a first resonance peak and a second resonance peak in the frequency range of 80Hz to 2kHz, and the peak frequencies of the resonance valley, the first resonance peak and the second resonance peak are sequentially defined as f0, f1 and f2, and satisfy the relation: f0 < f1 < f2. Wherein, f0 is less than or equal to 80Hz and less than or equal to 400Hz, f1 is less than or equal to 80Hz and less than or equal to 400Hz, and f2 is less than or equal to 100Hz and less than or equal to 2kHz.

In some embodiments, in the non-worn state, the frequency response curve of the vibration panel 114 has only one resonance peak in the frequency band range of 80Hz to 2 kHz. Wherein, the peak frequency of the resonance peak is between 100Hz and 2 kHz.

In some embodiments, in the non-worn state, the frequency response curve of the vibration panel 114 has a first resonance peak and a second resonance peak in a frequency band range of 80Hz to 2kHz, and no resonance valley. Wherein, the peak frequency of the first resonance peak is between 80Hz and 400Hz, and the peak frequency of the second resonance peak is between 100Hz and 2 kHz.

In some embodiments, in the non-wearing state, the frequency response curve of the vibration panel 114 has a resonance valley, a first resonance peak and a second resonance peak in the frequency range from 80Hz to 200Hz, and the peak frequencies of the resonance valley, the first resonance peak and the second resonance peak are sequentially defined as f0, f1 and f2, and satisfy the relationship: f0 < f2, and f1 < f2.

In some embodiments, the mass of cartridge housing 111 is greater than or equal to 1.2g, preferably greater than or equal to 1.5g; and/or the stiffness of the first vibration-transmitting sheet 113 is 2500N/m or less. Further, the mass of the magnetic circuit is greater than or equal to 3g, preferably greater than or equal to 5g; and/or the second vibration-transmitting sheet 1122 has a stiffness of 3000N/m or more, preferably 5000N/m or more.

In some embodiments, the mass of cartridge housing 111 is less than or equal to 0.5g, preferably less than or equal to 0.3g; and/or the rigidity of the first vibration-transmitting sheet 113 is greater than or equal to 2000N/m, preferably greater than or equal to 5000N/m.

In some embodiments, in the non-worn state, the frequency response curve of vibration panel 114 has a resonance peak that is strongly correlated to the stiffness of support 1121, and the peak frequency of the resonance peak is greater than or equal to 4kHz, preferably greater than or equal to 5kHz. Wherein the rigidity of the support 1121 is greater than or equal to 10 ⁵ N/m, preferably greater than or equal to 5X 10 ⁵ N/m。

Referring to fig. 12, the earphone 10 may further include a head rest assembly 12 connected to the deck module 11, and the head rest assembly 12 is configured to bypass the top of the head of the user and may enable the deck module 11 to be integrally located at the front side of the ear of the user. Of course, the movement module 11 may be located on the back side of the user's ear or other positions as a whole, or may be located on the front side or the back side of the user's ear. In some embodiments, such as fig. 34, cartridge module 11 may be in contact with the user's cheek through cartridge housing 111 (and in particular, first end wall 1113), i.e., the side of cartridge housing 111 facing away from adapter housing 13 forms a contact surface for contact with the user's skin. In other embodiments, such as fig. 1, movement module 11 may be in contact with the user's cheek through vibration panel 114. In other alternative embodiments, such as fig. 3, movement module 11 may be in contact with a user's cheek via vibration panel 114 and rim 116, and further such as fig. 45, movement module 11 may be in contact with a user's cheek via porous structures 1167 on vibration panel 114 and rim 116.

It should be noted that: in addition to the head rail assembly 12 shown in fig. 12, the deck module 11 may be connected to other types of support assemblies for supporting the deck module 11 in a worn position, as well as allowing the user to wear the headset 10. For example: the support assembly comprises a rear hanging structure and an ear hanging structure connected with two ends of the rear hanging structure respectively, wherein the rear hanging structure is used for bypassing the rear side of the brain of a user in a wearing state, and the two ear hanging structures are respectively used for being hung on the left ear and the right ear of the user in the wearing state. Further, the wearing position may be a position where the cheek of the user approaches the ear or a front side where the ear of the user faces away from the head.

As an example, in the worn state, the head rest assembly 12 and the top of the user's head may form a first contact point (for example, CP1 in fig. 13 to 17), the movement module 11 and the cheek of the user form a second contact point (for example, CP2 in fig. 13 to 17), and the distance between the second contact point and the first contact point in the direction of the sagittal axis of the human body (for example, W in fig. 13 to 17) may be between 20mm and 30mm, preferably between 22mm and 28 mm; further, the distance between the second contact point and the first contact point in the direction of the sagittal axis of the human body is preferably 25mm, when the distance is ensured, the movement module 11 can be naturally worn to the wearing position of the cheek of the user, which is close to the ear, the movement module 11 vibrates at the wearing position to generate sound waves, and the sound waves can be transmitted to the central nerve of the user through the shortest path, so that the transmission efficiency of the sound waves is higher, and the sound loss is less. The first contact point can be located right above the ear of the user, and the second contact point can be located right in front of the ear of the user, as seen along the direction of the coronal axis of the human body. Further, the head beam assembly 12 may include an arc-shaped head beam 121 and an adapter 122, wherein the arc-shaped head beam 121 is used to bypass the head of the user, and two ends of the adapter 122 are connected with the arc-shaped head beam 121 and the movement module 11, respectively. Wherein the arcuate head beam 121 may be positioned over the user's ears and form a first point of contact with the top of the user's head. Illustratively, the material of the arched head beam 121 may be plastic, and the material of the adapter 122 may be metal; of course, the materials of the two can be plastic or metal. When the deck module 11 is disposed so as to be able to approach or separate from the arc-shaped deck member 121 in the extending direction of the deck module 12, for example, one end (specifically, a first connecting section 1221 mentioned later) of the adapter 122 facing away from the deck module 11 is able to extend or retract the arc-shaped deck member 121, a portion of the arc-shaped deck member 121 mating with the adapter 122 may also be disposed as a metal member to locally enhance the wear resistance of both.

It should be noted that: although fig. 13 to 17 illustrate only the contact points formed by the earphone 10 and the head of the user on one side, the earphone 10 is generally arranged in a bilateral symmetry structure, for example, two ends of the head beam assembly 12 shown in fig. 12 are respectively connected to one deck module 11, so that each deck module 11 forms a second contact point with the cheek of the user, that is, the earphone 10 and the head of the user may actually form a first contact point and two contact points, which are abbreviated as "three-point wearing".

Referring to fig. 48 and 16, when the device is worn, the center of the vibration panel 114 on the side facing the wearing position (for example, CP2 in fig. 48) is closer to the external auditory meatus of the user's ear than the center of the core case 111 on the side facing the wearing position (for example, CP0 in fig. 48) in the direction of the human sagittal axis, as viewed along the direction of the human coronal axis. In other words, in the case where the above-described structure of the support assembly and the deck module 11 is certain, the vibration panel 114 is provided to be offset with respect to the deck housing 111, so that when the deck module 11 vibrates at the aforementioned wearing position to generate an acoustic wave, the acoustic wave can be transmitted to the central nerve of the user with the shortest path, so that the transmission efficiency of the acoustic wave is higher and the sound loss is less. In addition, the vibration panel 114 is closer to the external auditory meatus in the wearing state, so that the mechanical vibration generated by the transducer 112 is transmitted by the core module 11 in a bone conduction manner, and simultaneously, the air in the external auditory meatus can vibrate (i.e. air conduction sound) more, thereby increasing the volume of the sound heard by the user. Notably, are: in embodiments where movement module 11 includes peripheral edge 116, vibration panel 114 is offset with respect to peripheral edge 116, i.e., the centers of the two toward the side of the wearing position do not coincide.

In some embodiments, the center of vibration panel 114 orthographic projected to cartridge case 111 along the vibration direction of transduction device 112 coincides with the center of transduction device 112 orthographic projected to cartridge case 111 along the aforementioned vibration direction, i.e., vibration panel 114 is not offset relative to transduction device 112, e.g., where bracket 1121 is connected to vibration panel 114 is at the center of vibration panel 114; the center of the transducer 112 projected forward to the movement case 111 in the aforementioned vibration direction is not coincident with the center of the movement case 111 on the side toward the transducer 112 in the aforementioned vibration direction, that is, the transducer 112 is offset with respect to the movement case 111 as a whole.

In other embodiments, the center of orthographic projection of the transduction device 112 to the deck housing 111 along its vibration direction coincides with the center of the deck housing 111 on the side toward the transduction device 112 in the aforementioned vibration direction, that is, the transduction device 112 is not offset with respect to the deck housing 111 as a whole; while the center of the vibration panel 114 orthographic projected to the deck housing 111 in the aforementioned vibration direction does not coincide with the center of the transduction device 112 orthographic projected to the deck housing 111 in the aforementioned vibration direction, that is, the vibration panel 114 is offset with respect to the transduction device 112, for example, the position where the bracket 1121 is connected to the vibration panel 114 is not at the center of the vibration panel 114, so that the vibration panel 114 is offset with respect to the deck housing 111.

Further, the earphone 10 may include a adaptor housing 13 connecting the deck housing 111 and the support assembly (e.g., the head beam assembly 12). In conjunction with fig. 20, 27 and 28, the adaptor housing 13 may include a cylindrical sidewall 134 located at the periphery of the deck housing 111, where the cylindrical sidewall 134 may be connected to the head beam assembly 12. Based on this, the front projections of the cartridge case 111 and the cylindrical side wall 134 on the reference plane perpendicular to the vibration direction of the transduction device 112 have a first center and a second center, respectively. Wherein, in the worn state, the first center may be closer to the external auditory canal of the user's ear than the second center. In other words, in the case of a certain structure of the support assembly and the movement module 11, the movement housing 111 is configured to be offset with respect to the adapter housing 13, so that the movement module 11 vibrates at the wearing position to generate the sound wave, and the sound wave can be transmitted to the central nerve of the user through the shortest path, so that the transmission efficiency of the sound wave is higher and the sound loss is less.

As an example, in conjunction with fig. 48 and 46, cartridge housing 111 may be configured to rotate about a first axis (e.g., A1 in fig. 48) relative to adapter housing 13 to better fit cartridge module 11 in the donned position. Wherein the first center and the second center are spaced along the direction of the first axis. In other words, if one side of the cartridge case 111 is closer to the cylindrical side wall 134 in the direction of the aforementioned first axis, the other side of the cartridge case 111 may be farther from the cylindrical side wall 134, that is, the gap between the cartridge case 111 and the cylindrical side wall 134 may not be equal in the direction of the aforementioned first axis. Further, the first center and the second center may be translated on the first axis, that is, the movement module 11 may be translated only along the first axis by a distance.

In some embodiments, referring to fig. 13-16, in a worn state, and viewed along the direction of the coronal axis of the person, the head rail assembly 12 is at least partially tilted with respect to the vertical axis of the person, e.g., extends obliquely toward the front of the user, so as to form a first contact point and a second contact point. In this case, the adapter 122 may be provided in a rod shape or a sheet shape. For example: referring to fig. 13, the arched head rest 121 is inclined with respect to the human vertical axis, and the adapter 122 is parallel to the human vertical axis, as viewed in the direction of the human coronal axis. At this time, the adapter 122 may be connected to the side of the deck module 11 facing the top of the user's head. For another example: referring to fig. 14, the arched head rest 121 is inclined with respect to the human vertical axis, and the adapter 122 is also inclined with respect to the human vertical axis, both of which are inclined at the same angle with respect to the human vertical axis, as viewed in the direction of the human coronal axis. At this time, the adapter 122 may be connected to a side of the deck module 11 facing away from the cheek of the user. For another example: referring to fig. 15, the arched head rest 121 is inclined with respect to the human vertical axis, and the adapter 122 is inclined with respect to the human vertical axis in a part and parallel to the human vertical axis in another part, as viewed in the direction of the human coronal axis. At this time, the adapter 122 may be connected to a side of the deck module 11 facing away from the user's ear. For another example: referring to fig. 16, the arched head rest 121 is parallel to the human vertical axis, and the adapter 122 is inclined with respect to the human vertical axis in a part and parallel to the human vertical axis in another part, as viewed in the direction of the human coronal axis. At this time, the adapter 122 may be connected to the side of the deck module 11 facing the top of the user's head.

In other embodiments, in conjunction with fig. 17, the adapter 122 may be provided in a ring shape. At this time, in the wearing state, and as viewed along the direction of the coronal axis of the human body, the arched head beam 121 may be parallel to the vertical axis of the human body, and the adapter 122 may be sleeved on the periphery of the ear of the user, and may also form the first contact point and the second contact point. The adapter 122 may be a continuous closed loop or a discontinuous loop (e.g., C-shaped or U-shaped).

It should be noted that: in the fields of medicine, anatomy, etc., three basic tangential planes of the Sagittal Plane (Sagittal Plane), the Coronal Plane (Coronal Plane) and the Horizontal Plane (Horizontal Plane) of the human body, and three basic axes of the Sagittal Axis (Sagittal Axis), the Coronal Axis (Coronal Axis) and the Vertical Axis (Vertical Axis) may be defined. The sagittal plane is a section perpendicular to the ground and is divided into a left part and a right part; the coronal plane is a tangential plane perpendicular to the ground and is formed along the left-right direction of the body, and divides the human body into a front part and a rear part; the horizontal plane refers to a section parallel to the ground along the up-down direction of the body, and divides the human body into an upper part and a lower part. Accordingly, the sagittal axis refers to an axis passing vertically through the coronal plane in the anterior-posterior direction of the body, the coronal axis refers to an axis passing vertically through the sagittal plane in the lateral direction of the body, and the vertical axis refers to an axis passing vertically through the horizontal plane in the up-down direction of the body.

As an example, and in conjunction with fig. 12, 16, and 20, the adapter 122 may include a first connection section 1221, an intermediate transition section 1222, and a second connection section 1223, the intermediate transition section 1222 connecting the first connection section 1221 and the second connection section 1223. Wherein the first and second connecting sections 1221 and 1223 are each folded and extend in opposite directions relative to the intermediate transition section 1222. At this time, the first connecting section 1221 may be connected to the arc-shaped head beam 121, and the second connecting section 1223 may be connected to the deck module 11. Wherein the intermediate transition 1222 is inclined relative to the vertical axis of the body, as viewed along the direction of the coronal axis of the body, so as to form a first contact point and a second contact point.

Further, the angle of bending of the first connecting section 1221 relative to the intermediate transition section 1222 (e.g., θ1 shown in fig. 16) may be greater than or equal to 90 ° and less than 180 °; and/or, the bend angle of the second connecting section 1223 relative to the intermediate transition section 1222 (e.g., shown as θ2 in fig. 16) may be greater than or equal to 90 ° and less than 180 °. In this way, the adapter 122 is enabled to more smoothly transition the arc-shaped head beam 121 and the deck module 11. Wherein, in the wearing state, and viewed along the direction of the coronal axis of the human body, the first connecting section 1221 may be parallel to the second connecting section 1223. At this time, the interval between the first and second connection sections 1221 and 1223 (e.g., as shown by W in fig. 16) may be between 20mm and 30mm, preferably between 22mm and 28 mm.

It should be noted that: in connection with fig. 19, the adaptor 122 may also have a curved curvature at other angles (e.g., along the sagittal axis of the human body), such as the adaptor 122 at each end of the arched beam 121 may extend in the same direction toward each other, so as to facilitate better head contact of the earphone 10 and facilitate the compression force provided by the beam assembly 12 to the deck module 11.

Further, referring to fig. 20, the first connecting section 1221 and the second connecting section 1223 may be provided with routing cavities, for example, they are respectively provided in a hollow tubular shape, and the intermediate transition section 1222 may be provided with a slot 1224, where the slot 1224 is used to communicate the routing cavities of the first connecting section 1221 and the second connecting section 1223, so as to allow routing of the earphone 10 to extend from the deck module 11 to the arc-shaped head beam 121 via the adapter 122. The wires of the earphone 10 may be provided as wires, flexible circuit boards, etc. Accordingly, the head beam assembly 12 may also include a seal embedded in the slot 1224, the seal covering the wiring, which may facilitate improved waterproofing and dust protection of the earphone 10, as well as improved appearance of the earphone 10. The sealing element can be a colloid after curing or a cover plate. Of course, in other embodiments, the wires of the earphone 10 may be exposed from the adapter 122; accordingly, the adapter 122 may be provided as a solid structure.

The inventors of the present application found in long-term studies that: when the headrest assembly 12 applies a pressing force between 0.4N and 0.8N to press the movement module 11 against the cheek of the user, that is, in the wearing state, the pressing force of the movement module 11 against the cheek of the user may be between 0.4N and 0.8N, preferably between 0.5N and 0.6N, the user can obtain excellent wearing stability and comfort and good sound quality. The pressing force can be measured by means of a clamping force tester (FL-86161A, bo Wen Yiqi). Specifically, during measurement, the earphone 10 is clamped on two sides of a parallel plate of the clamping force testing machine and supported on a middle fork of the clamping force testing machine; subsequently, the parallel plates of the clamping force tester are such that the two deck modules 11 face away from each other and have a test pitch (e.g., 145mm in average human head width), thereby simulating the user wearing the earphone 10. At this time, the corresponding pressing force can be measured by reading the numerical value displayed on the clamping force testing machine. The head may vary in size (e.g., "big head" and "small head") for different users. Accordingly, the head rail assembly 12 may be configured to be adjustable in arc length to meet the wearing requirements of different users of the headset 10. Further, the present application contemplates that consistent compression forces can be achieved when different users wear the headset 10.

Illustratively, the first connecting section 1221 is capable of extending or retracting the arcuate head beam member 121 under an external force to allow the movement module 11 to move closer to or farther from the arcuate head beam member 121 in the extending direction of the head beam assembly 12, thereby adjusting the arc length of the head beam assembly 12. Of course, the second connecting section 1223 can also extend or retract the deck module 11 under the action of external force, and the arc length of the head beam assembly 12 can be adjusted as well.

Further, in connection with fig. 12, both ends of the arc-shaped head beam 121 may be provided with the adapter 122 and the deck module 11. The head beam assembly 12 provides a first pressing force to the movement module 11 in the first use state, and provides a second pressing force to the movement module 11 in the second use state, wherein an absolute value of a difference between the second pressing force and the first pressing force may be between 0 and 0.1N, preferably between 0 and 0.05N. Therefore, when the earphone 10 is worn by different users, that is, the head beam assembly 12 has different arc lengths and the two movement modules 11 have different distances, the head beam assembly 12 makes the pressing force applied by the movement modules 11 to the cheeks of the users not greatly different, and the adaptation degree of the earphone 10 to different users is further increased.

It should be noted that: the first usage state may be defined as a usage state in which each of the transfer members 122 has a first protruding amount with respect to the arc-shaped head beam member 121 and a first interval is provided between the two deck modules 11; the second use state may be defined as a use state in which each of the transfer members 122 has a second projecting amount with respect to the arc-shaped head beam member 121 and the two deck modules 11 have a second interval therebetween. The second protruding amount is larger than the first protruding amount, and the second interval is larger than the first interval. In short, the first state of use may be intended for a small-head user to wear the headset 10, and the second state of use may be intended for a large-head user to wear the headset 10. Therefore, when the deck module 11 is closest to the arc-shaped head member 121, the first projecting amount may take a minimum value; and the second projecting amount may take a maximum value when the deck module 11 is farthest from the arc-shaped head member 121.

The inventors of the present application found in long-term studies that: under the same conditions, parameters such as rigidity, bending degree and the like of the arc-shaped head beam part 121 and the adapter part 122 have a certain influence on the pressing force which can be provided by the head beam assembly 12, and qualitative analysis is performed on the parameters.

For the cantilever beam, in connection with FIG. 18, the cantilever beam will undergo bending deformation under load such as concentrated force, distributed load, etc., with maximum deflection w _max Occurs at the free end of the cantilever beam.

For a constant section cantilever, the free end deflection satisfies the following relation (1) based on the material mechanics in combination with (a) in fig. 18.

Where EI is the section bending stiffness and M (x) is the section bending moment. Wherein E is the Young's modulus of the material, and I is the section moment of inertia.

For the variable cross-section cantilever, in connection with fig. 18 (b), a piecewise stiffness method may be used in analyzing the displacement of the free end thereof, since the properties of the variable cross-section beam change. The variable cross section cantilever beam is regarded as being formed by a plurality of constant cross section cantilever beams, the rest cantilever beam sections except the cantilever beam Duan Zhiwai under study can be regarded as a rigid body when deformation is calculated, and finally displacement deformation under the same load working condition is overlapped. Accordingly, the deflection of the free end satisfies the following relation (2).

For a headphone such as that shown in fig. 12, the left and right sides of the headphone 10 can be simplified to be symmetrical, so that one side thereof is taken for stress analysis. Wherein the earphone 10 satisfies the moment balance equation, i.e., the following relation (3), in either the first use state (e.g., the retracted state) or the second use state (e.g., the extended state).

M＝F·L (3)

Where M is a bending moment value of the earphone 10 at a top pivot point (e.g., the first contact point CP 1), E is a pressing force provided by the head beam assembly 12 to the movement module 11 in a certain use state, and L is a force arm from an equivalent concentrated acting point (e.g., the second contact point CP 2) of the movement module 11 to the top pivot point. With reference to fig. 19, assuming that the position of the equivalent concentrated action point on the deck module 11 is not changed by the telescopic adjustment of the head beam assembly 12, the moment arm L is increased during the fully extended (e.g., the maximum extension of the adapter 122 with respect to the arc-shaped head beam 121) condition, when the fully retracted (e.g., the minimum extension of the adapter 122 with respect to the arc-shaped head beam 121) condition is taken as a reference. Based on the above, by combining the moment balance equation (2), the change rule of the pressing force F can be obtained by researching the change rule of the bending moment M.

In connection with fig. 19, the earphone 10 is respectively opened from an initial free state to a final state of a corresponding interval (for example, 145mm in average human head width) under two different conditions of full retraction (for example, the "contracted state" in fig. 19) and full extension (for example, the "extended state" in fig. 19); now, assuming that the pressing force is the same in the critical state, that is, in either the contracted state or the extended state, the head beam assembly 12 can provide the same or similar pressing force to the deck module 11.

For fully retracted conditions, the head beam assembly 12 may be simply considered a constant cross-section cantilever beam (i.e., an arcuate head beamArc segment S where piece 121 is located ₁ ) Along arc S by deflection of its free end, i.e. equation (1) ₁ The following relation (4) is obtained by integration.

Wherein E is ₁ I ₁ Is an arc line section S ₁ Flexural rigidity of section L ₁ (S) is an arc segment S ₁ Moment arm function of the concentrated force F in cross section.

For fully extended conditions, beam assembly 12 may be considered simply as a variable cross-section cantilever beam (i.e., arc segment S where arcuate nose beam member 121 is located ₁ And arc segment S where adapter 122 is located ₂ ) Along arc S by deflection of its free end, i.e. equation (2) ₁ And arc line section S ₂ Respectively integrating and summing to obtain the following relation (5).

Wherein E is ₂ I ₂ Is an arc line section S ₂ Flexural rigidity of section L ₂ (S) is an arc segment S ₂ Moment arm function of the concentrated force F in cross section. Wherein the first two terms at the right end of the equation are arc segments S ₁ The third term is the arc line S ₂ Is the arc line S ₂ Components in the vertical direction.

Further, with reference to fig. 19, the above two conditions satisfy the following relation (6).

Δ ₂ ＝Δ ₁ +h (6

In which h is an arc segment S ₂ In the components in the horizontal direction, the relational expressions (4) and (5) are substituted into the relational expression (6), and h in the critical state where the pressing force is the same under the two working conditions is denoted as h _cr Then, the relation (7) is obtained.

The relation (7) gives the rule of variation of the pressing force of the earphone 10 in the extended state or the contracted state with the same head width. Correspondingly, an arc segment S ₂ The actual design value h in the horizontal direction satisfies the following relation (8).

As can be seen from the relations (7) and (8), an arc segment S is assumed ₁ Cross-section flexural rigidity E of (2) ₁ I ₁ Arc line S ₂ The component l in the vertical direction is unchanged, then there is:

1) Arc segment S ₂ Bending stiffness E of the section bending stiffness of (2) ₂ I ₂ The smaller the design (i.e. h _cr The greater) the lower the pressing force after it is extended;

2) Arc segment S ₂ The smaller the arc design of the inward curve (e.g., the smaller h), the less the compression force after extension.

Based on the above detailed analysis, quantitative explanation will now be made. Illustratively, when each movement module 11 is closest to or farthest from the arc-shaped head beam 121 in the non-wearing state, the adapters 122 at both ends of the arc-shaped head beam 121 are symmetrically disposed with respect to a first reference plane (e.g., RP1 in fig. 19), and a second reference plane (e.g., plane in which the paper surface is located) passes through a line (e.g., RP2 in fig. 19) between both ends of the arc-shaped head beam 121 and perpendicularly intersects the first reference plane. Wherein, in the wearing state, the first reference plane may be parallel to the sagittal plane of the human body, and the second reference plane may be parallel to the coronal plane of the human body. Further, in conjunction with fig. 19, in the natural state of the arched head beam 121, and with the arched head beam 121 and the adapter 122 projected onto the second reference plane, the free end (e.g., the second connecting segment 1223) of the adapter 122 for connecting to the movement module 11 has a first position (e.g., L1 in fig. 19) when the movement module 11 is closest to the arched head beam 121 (e.g., as shown in "contracted" in fig. 19), and a second position (e.g., as shown in L2 in fig. 19) when the movement module 11 is furthest from the arched head beam 121 (e.g., as shown in "extended" in fig. 19). The connection line between the first position and the second position has a first projection component in a first reference direction parallel to the connection line between the two ends of the arched head beam 121 (e.g., as shown in fig. 19 h), and has a second projection component in a second reference direction perpendicular to the connection line between the two ends of the arched head beam 121 (e.g., as shown in fig. 19 l), and the ratio of the second projection component to the first projection component may be greater than or equal to 2. Further, the ratio of the cross-sectional bending rigidity of the adapter 122 to the cross-sectional bending rigidity of the arched head beam 121 may be less than or equal to 0.9. In other words, the adaptor 122 is designed to be soft and straight, so that the pressing force in the contracted state is larger than the pressing force in the extended state when the two movement modules 11 are spaced at the same distance; in consideration of the fact that the pressing force is larger as the head width is larger, it is further achieved that the clamping force when the two movement modules 11 are in a small-spaced and contracted state (i.e., the earphone 10 is worn by a user with a small head) is the same as or similar to the clamping force when the two movement modules 11 are in a large-spaced and expanded state (i.e., the earphone 10 is worn by a user with a large head).

The inventors of the present application found in long-term studies that: under the same conditions, the number of contact points formed by the earphone 10 with the head of the user in the wearing state and the distribution thereof have a great influence on the wearing stability. For example: in the low head state, the earphone 10 is at risk of sliding down or rotating relative to the head of the user with the movement module 11 as a rotating shaft due to the influence of the gravity of the earphone 10, thereby affecting the reliability of the earphone 10 in terms of wearing.

As an example, for example, fig. 13 to 17, in the wearing state, the head rest assembly 12 may form a first contact point with the head top of the user, and the movement module 11 may form a second contact point with the cheek of the user. Wherein, after the user wears the earphone 10 according to his head size and under the pressing force provided by the head rest assembly 12 to the deck module 11, the earphone 10 may apply pressing forces directed to the user's head at the first contact point and the second contact point, respectively. Based on this, in the low head state, the movement module 11 generates a resisting moment under the action of friction force due to the contact with the cheek of the user, the head beam assembly 12 generates another resisting moment under the action of friction force due to the contact with the top of the head of the user, and the combined moment of the two resisting moments can be greater than or equal to the gravity moment of the earphone 10 relative to the movement module 11, that is, the gravity moment of the earphone 10 is overcome in the low head state, so that the earphone 10 is prevented from sliding down or the movement module 11 is taken as a rotating shaft to rotate relative to the head of the user.

Further, in addition to the first contact point formed by the head rest assembly 12 and the top of the head of the user and the second contact point formed by the movement module and the cheek of the user, the head rest assembly 12 may form a third contact point (for example, CP3 shown in fig. 49) with the head of the user, where the third contact point is between the first contact point and the second contact point in the direction of the vertical axis of the human body. Wherein, after the user wears the earphone 10 according to his head size and under the pressing force provided by the head rest assembly 12 to the deck module 11, the earphone 10 may apply pressing forces directed to the user's head at the first contact point, the second contact point and the third contact point, respectively. Based on this, in the low head state, the movement module 11 generates a resisting moment under the action of friction force due to contact with the cheek of the user, the head beam assembly 12 generates another resisting moment under the action of friction force due to contact with the head top of the user, the head beam assembly 12 generates another resisting moment under the action of friction force due to contact with other parts except the head top of the user, and the combined moment of the three resisting moments can be larger than the combined moment of the two resisting moments, so that the combined moment can overcome the gravitational moment of the earphone 10 more easily in the low head state, and the reliability of the earphone 10 in wearing aspect is improved.

It should be noted that: referring to fig. 12, two end portions of the head beam assembly 12 may be respectively connected to one movement module 11, and each movement module 11 may respectively form a second contact point with the cheek of the user; accordingly, the head rail assembly 12 and the two sides of the user's head may also form a third contact point, respectively. In other words, the earphone 10 and the head of the user may actually form one first contact point, two second contact points and two third contact points, abbreviated as "five-point wear". For the third contact point on one side of the head of the user, the length of the head beam assembly 12 is longer or the head of the user is different from crowd to crowd, so that the number of the third contact points can be multiple. Further, when the head beam assembly 12 forms the third contact point with the head of the user, there is at least partial non-contact between the head beam assembly 12 and the head of the user between the first contact point and the second contact point, that is, the head beam assembly 12 does not all contact with the head of the user and forms a corresponding pressing force, so as to maintain that the pressing force at the movement module 11 does not change greatly.

An exemplary description of the force analysis for the three-point wear and five-point wear described above is provided below in connection with fig. 49. Fig. 49 (a) is a schematic diagram of a mechanical model viewed along a direction of a sagittal axis of a human body when a user is not low in a three-point wearing situation, fig. 49 (b) is a schematic diagram of a mechanical model viewed along a direction of a coronal axis of a human body when a user is low in a three-point wearing situation, fig. 49 (c) is a schematic diagram of a mechanical model viewed along a direction of a sagittal axis of a human body when a user is not low in a five-point wearing situation, and fig. 49 (d) is a schematic diagram of a mechanical model viewed along a direction of a coronal axis of a human body when a user is low in a five-point wearing situation.

In the case of the three-point wear and the five-point wear described above, it is assumed that: the head size of the user is kept unchanged, the wearing state of the earphone 10 is kept unchanged, the distance H between the first contact point and the reference connecting line of the two core modules 11 is kept unchanged, the pressing force F1 applied by the head beam assembly 12 to the head top of the user is kept unchanged, and the weight G of the earphone 10 and the distance L between the equivalent gravity center of the earphone and the reference connecting line are kept unchanged; the contact area between the movement module 11 and the cheek of the user is kept unchanged, so that the equivalent force arm r is kept unchanged when the movement module 11 acts on the cheek of the user; the coefficient of friction mu 1 between the movement module 11 and the user's cheek and the coefficient of friction mu 2 between the head beam assembly 12 and the user's head remain unchanged. For the five-point wearing, the distance between the third contact point and the reference connecting line is H, and H < H.

Further assume that: the compression force F2 provided by the head beam assembly 12 in both cases remains unchanged, so that, for the three-point wearing described above, the compression force provided by the head beam assembly 12 acts mainly on the second contact point, so that the compression force of the movement module 11 on the cheek of the user is F2; for the five-point wear described above, the compression force provided by the head rest assembly 12 acts not only on the second contact point but also on the third contact point, such that the compression force of the movement module 11 against the user's cheek is less than F2, wherein assuming that the compression force of the head rest assembly 12 against the user's head at the third contact point is F3, the compression force of the movement module 11 against the user's cheek is (F2-F3).

For the three-point wear, in a low-head state, for example, when the head of the user leans forward by an angle β, the movement module 11 generates a resisting moment under the action of friction force due to contact with the cheeks of the user, the head beam assembly 12 generates another resisting moment under the action of friction force due to contact with the top of the head of the user, and the combined moment of the two resisting moments can be M1; for the above-mentioned five-point wear, in a low-head state, for example, the user's head is tilted forward by an angle β as well, the movement module 11 generates a resisting moment under the action of friction force due to contact with the user's cheek, the head beam assembly 12 generates another resisting moment under the action of friction force due to contact with the user's head top, the head beam assembly 12 generates another resisting moment under the action of friction force due to contact with other places (for example, the third contact point) other than the user's head top, and the resultant moment of the three resisting moments may be M2 and may be greater than the resultant moment M1 of the two resisting moments. Wherein, the following relation is satisfied among the resultant moment M1, the resultant moment M2 and the gravity moment G.L.sin beta:

M1≥G·L·sinβ

M2≥G·L·sinβ

M1＝μ1·F2·r+μ2·F1·H

M2＝μ1·(F2-F3)·r+μ2·F3·h+μ2·F1·H

M2-M1＝μ2·F3·h-μ1·F3·r

in the formula, the distance h is much larger than the equivalent moment arm r, and the difference between the friction coefficients mu 1 and mu 2 is smaller than the difference between the distance h and the equivalent moment arm r, namely, h/r is larger than mu l/mu 2 or mu 2.h-mu 1.r is larger than 0, so that M2-M1 is larger than 0. In other words, under the same conditions, five-point wearing is more advantageous than three-point wearing in maintaining the wearing state of the earphone 10 in the low head state.

The inventors of the present application found in long-term studies that: for the five-point wear described above, the compression force at the second contact point may be between 0.2N and 2N, and the compression force at the third contact point may be between 0.3N and 2N, so that the user may obtain good wear stability and comfort, and the headset 10 exhibits good sound quality. If the pressing force of the second contact point is too small, the mechanical vibration transmitted from the movement module 11 to the user is easily reduced, so as to influence the listening effect of the earphone 10; if the pressing force of the second contact point is too large, it is liable to cause uncomfortable wearing by the user. Further, if the pressing force of the third contact point is too small, it is disadvantageous to improve the reliability of the earphone 10 in terms of wearing; if the pressing force of the third contact point is too large, insufficient pressing force at the second contact point is liable to be caused.

Referring to fig. 50 to 52, the head rest assembly 12 may include an auxiliary member 125 connected to the arc-shaped head rest 121, for example, the auxiliary member 125 is connected to an inner cap 1214 mentioned later, so that in a wearing state, both auxiliary members 125 form third contact points with both sides of the user's head, respectively. Wherein, one end of the auxiliary member 125 may be connected to the arched beam 121, and the other end is not connected to the arched beam 121, i.e. forms a cantilever structure; the auxiliary member 125 may be connected to the arched girder 121 at both ends, respectively, with a middle portion protruding between the both ends. For ease of description, the present application is illustratively described in terms of the cantilevered arrangement of each auxiliary element 125 relative to arcuate head beam member 121. Of course, in other embodiments, the third contact point may also be formed when the arcuate head beam member 121 is in contact with the head of the user, such as where the arcuate head beam member 121 is partially raised to form the third contact point, i.e., the head beam assembly 12 does not include the auxiliary element 125. Accordingly, the arcuate head beam 121 may form a first point of contact with the top of the user's head.

Based on the above detailed description, in the low head state, the pressing force at the first contact point forms a first resisting moment with respect to the second contact point, the pressing force at the third contact point forms a second resisting moment with respect to the second contact point, the pressing force at the second contact point forms a third resisting moment with respect to the contact surface of the movement module 11 with the cheek of the user when the head rest assembly 12 includes the auxiliary member 125, and the pressing force at the second contact point forms a fourth resisting moment with respect to the contact surface of the movement module 11 with the cheek of the user when the head rest assembly 12 does not include the auxiliary member 125. The combined moment formed by the first resisting moment, the second resisting moment and the third resisting moment is larger than the combined moment formed by the first resisting moment and the fourth resisting moment. In short, the provision of the auxiliary member 125 on the head rest assembly 12 to introduce another moment of resistance is advantageous in overcoming the moment of gravity of the earphone 10 in the low head state, thereby improving the reliability of the earphone 10 in terms of wearing.

Further, the auxiliary member 125 is provided to have elasticity such that the amount of change in the pressing force at the second contact point is less than or equal to 0.2N due to different degrees of elastic deformation of the auxiliary member 125 when the earphone 10 is worn by users having heads of different sizes. In this way, when different users use the earphone 10, the auxiliary member 125 can apply a pressing force to the head of the user, so as to improve the stability of the earphone 10 in wearing, especially in a low-head state, and the pressing force of the core module 11 to the cheeks of the user can be not changed greatly, so as to maintain the expressive force of the earphone 10 in acoustic aspect. Based on this, when the head rest assembly 12 has the adapter 122 to adjust the arc length of the head rest assembly 12 to better adapt to different users, the auxiliary member 125 is also disposed such that the absolute value of the difference between the above-mentioned second pressing force and the above-mentioned first pressing force is between 0 and 0.1N, so that the pressing force of the movement module 11 against the cheeks of the users does not vary much. Wherein, the first pressing force and the second pressing force can be respectively between 0.4N and 0.8N.

Referring to fig. 50 and 51, in a natural state, the head beam assembly 12 has a first reference plane and a second reference plane, which are orthogonal to each other, and the two auxiliary members 125 are symmetrically disposed with respect to the first reference plane (for example, RP1 in fig. 50 and 51), and the second reference plane (for example, the plane of the paper surface) passes through the highest point and two end points of the arc-shaped head beam member 121. Wherein the arched head 121 and the auxiliary member 125 are projected onto a second reference plane, in which a line between the fixed end and the free end of the auxiliary member 125 has a first projected component in a first reference direction parallel to a line of two endpoints of the arched head 121 (e.g., shown as x1 in fig. 50 and 51), and a second projected component in a second reference direction perpendicular to a line of two endpoints of the arched head 121 (e.g., shown as y1 in fig. 50 and 51). Based on this, the ratio between the aforementioned second projection component and the first projection component (e.g., y1/x 1) may be between 1 and 5; and/or the equivalent elastic coefficient of the auxiliary element 125 may be between 100N/m and 180N/m. If the above ratio is too small, the pressing force of the third contact point is too small, which is not beneficial to improve the reliability of the earphone 10 in wearing; if the aforementioned ratio is too large, it is easy to cause the pressing force of the third contact point to be too large, which in turn causes the pressing force at the second contact point to be insufficient, for example, the movement module 11 is supported by the auxiliary member 125. Similarly, if the equivalent elastic coefficient of the auxiliary member 125 is too small, it is easy to cause the pressing force of the third contact point to be too small, which is disadvantageous in improving the reliability of the earphone 10 in terms of wearing; if the equivalent elastic coefficient of the auxiliary member 125 is too large, it is easy to cause the pressing force of the third contact point to be too large, which in turn causes the pressing force at the second contact point to be insufficient, for example, the movement module 11 is supported by the auxiliary member 125.

In some embodiments, in a natural state, the arc-shaped head beam 121 is projected onto the second reference plane, and a rectangular coordinate system is established in the second reference plane, where the rectangular coordinate system uses the highest point of the arc-shaped head beam 121 as an origin of coordinates, a straight line passing through the origin of coordinates and parallel to a connecting line of two end points of the arc-shaped head beam 121 is an x-axis, a straight line passing through the origin of coordinates and perpendicular to the x-axis is a y-axis, and a curve from any end point to the highest point of the arc-shaped head beam 121 may satisfy the following relationship:

x＝±(-2.63472525·10 ¹⁵ ·y ¹⁰ +1.41380284·10 ¹² ·y ⁹ -3.25586957·10 ¹⁰ ·y ⁸ +4.2058788·10 ⁸ .y ⁷ -3.34381129·10 ⁶ ·y ⁶ +1.69016414·10 ⁴ ·y ⁵ -5.42625713｀10 ³ ·y ⁴ +1.07794891｀10 ¹ ·y ³ -1.27679777·y ² +9.70381438·y+2.61)。

based on this, the thickness of the auxiliary element 125 may be less than or equal to 4mm, so that the auxiliary element 125 can provide a corresponding compression force when the earphone 10 is worn by a user with a large head; the gap between the auxiliary element 125 and the arched beam 121 may be greater than or equal to 10mm so that the auxiliary element 125 can provide a corresponding compression force when the headset 10 is worn by a smaller head user. If the thickness of the auxiliary member 125 is too large, the auxiliary member 125 is easily abutted against the arc-shaped head beam member 121 when the earphone 10 is worn by a user with a large head, so that the pressing force at the second contact point is insufficient, for example, the movement module 11 is supported by the auxiliary member 125; if the gap between the auxiliary member 125 and the arched beam 121 is too small, the auxiliary member 125 may be difficult to abut against the head of the user when the earphone 10 is worn by the user having a smaller head, thereby resulting in too small a pressing force at the third contact point.

In some embodiments, each auxiliary element 125 may be respectively fixed to one end of the arched beam 121, and a line between any one end point and the highest point of the arched beam 121 has a third projection component in a first reference direction parallel to the line of the two end points (e.g., x2 in fig. 50 and 51), and a fourth projection component in a second reference direction perpendicular to the line of the two end points of the arched beam 121 (e.g., y2 in fig. 50 and 51). Based on this, the ratio (e.g., y1/y 2) between the second projection component and the fourth projection component may be between 0.1 and 0.5. If the above ratio is too small, the pressing force of the third contact point is too small, which is not beneficial to improve the reliability of the earphone 10 in wearing; if the above ratio is too large, the pressing force of the second contact point is liable to be insufficient, for example, the movement module 11 and the arc-shaped head beam 121 are supported by the auxiliary member 125, which is also disadvantageous for improving the reliability of the earphone 10 in terms of wearing.

In some embodiments, such as where the auxiliary member 125 is not necessarily fixed to the end of the arc-shaped head beam member 121, the projection component of the distance between the fixed end of the auxiliary member 125 connected to the arc-shaped head beam member 121 and the deck module 11 adjacent to the auxiliary member 125 in the second reference direction perpendicular to the line connecting the two end points of the arc-shaped head beam member 121 may be between 40mm and 120 mm. Wherein, if the foregoing distance is too small, insufficient pressing force at the second contact point is liable to be caused, for example, the movement module 11 is lifted up by the auxiliary member 125; if the foregoing distance is too large, insufficient pressing force at the first contact point is liable to be caused, for example, the arched head rest 121 is supported by the auxiliary member 125.

As an example, in connection with fig. 50, the auxiliary member 125 may extend toward a middle region of the arc-shaped head beam member 121. Wherein, in the second reference plane, the fixed end of the auxiliary element 125 connected to the arched head beam 121 has a first distance (shown as y3 in fig. 50) from the highest point of the arched head beam 121 in the reference direction perpendicular to the line connecting the two ends of the arched head beam 121, and the position of the movement module 11 connected to the head beam assembly 12 has a second distance (shown as y4 in fig. 50) from the highest point in the reference direction. Based on this, the ratio between the aforementioned first distance and second distance (e.g., y3/y 4) may be between 1/3 and 1/2. Wherein if the aforementioned ratio is too small, it is liable to cause insufficient pressing force of the first contact point, for example, the arc-shaped head member 121 is supported by the auxiliary member 125; if the aforementioned ratio is too large, it is liable to cause insufficient pressing force of the second contact point, for example, the deck 11 is supported by the auxiliary member 125.

As an example, in connection with fig. 51, the auxiliary member 125 may extend toward an end of the arc-shaped head beam member 121. Wherein, in the second reference plane, the fixed end of the auxiliary element 125 connected to the arched beam 121 has a third distance (e.g., y3 in fig. 51) from the highest point of the arched beam 121 in the reference direction perpendicular to the line connecting the two ends of the arched beam 121, and the position of the movement module 11 connected to the arched beam 12 has a fourth distance (e.g., y4 in fig. 51) from the highest point in the reference direction. Based on this, the ratio between the aforementioned third distance and fourth distance (e.g., y3/y 4) may be between 1/5 and 1/3. Wherein if the aforementioned ratio is too small, it is liable to cause insufficient pressing force of the first contact point, for example, the arc-shaped head member 121 is supported by the auxiliary member 125; if the aforementioned ratio is too large, it is liable to cause insufficient pressing force of the second contact point, for example, the deck 11 is supported by the auxiliary member 125.

As an example, referring to fig. 52, the auxiliary member 125 may include a fixing portion 1251, a first extension portion 1252 connected to the fixing portion 1251, and a second extension portion 1253 connected to the first extension portion 1252, and the fixing portion 1251 may be connected to the arc-shaped head member 121. Wherein the first and second extensions 1252 and 1253 are positioned on a side of the arched head rest 121 facing the user's head in the worn state and are spaced apart from the arched head rest 121 in the natural state so that the auxiliary member 125 forms a third contact point with the user's head. Based on this, the width of the second extension 1253 may be greater than the width of the first extension 1252, the second extension 1253 being configured to form a third contact point with the user's head in the worn state. In other words, the auxiliary element 125 is generally arranged in a T-shaped configuration, with the relatively elongated first extension 1252 facilitating deformation of the auxiliary element 125, and the relatively short wide second extension 1253 facilitating better contact of the auxiliary element 125 with the user's head. For example: the second extension 1253 of the two auxiliary members 125 are drawn toward each other toward the rear side of the user's head when viewed along the direction of the vertical axis of the human body in the wearing state, so that they can hook the head at the rear side of the user's head, which is advantageous for improving the reliability of the earphone 10 in wearing, especially in the low head state.

Further, in a natural state, the head rail assembly 12 has a first reference plane and a second reference plane orthogonal to each other, the two auxiliary members 125 are symmetrically disposed with respect to the first reference plane, and the second reference plane passes through the highest point and both end points of the arc-shaped head rail member 121. The first reference plane may be parallel to a sagittal plane of the human body and the second reference plane may be parallel to a coronal plane of the human body in a wearing state. Based on this, the angle between the average normal of the second extension 1253 of each auxiliary element 125 and the aforementioned second reference plane may be between 5 degrees and 10 degrees. Considering that the second extension 1253 may be configured to more closely conform to the user's head, such as a contoured configuration, the normal is further defined as an average normal. The calculation formula of the average normal may be:

in the method, in the process of the invention,is the average normal line; />Is the normal to any point on the surface, ds is the bin.

Further, the area of the second extension 1253 in contact with the user's head may be between 2cm ² And 8cm ² Between them. Wherein, if the area is large or small, wearing discomfort is easily caused; if the aforementioned area is too large, deterioration of the external appearance of the earphone 10 as a whole is liable to occur. In addition, if the aforementioned area is large, it is disadvantageous that the auxiliary member 125 generates a sufficient resistance moment.

Further, the coefficient of friction of the second extension 1253 may be greater than the coefficient of friction of the first extension 1252 such that the auxiliary element 125 forms a corresponding moment of resistance primarily through the second extension 1253.

Further, the auxiliary member 125 and the arched head beam 121 may be detachably connected to facilitate replacement or user selection of whether to use the auxiliary member 125 according to actual needs.

Based on the above detailed description, the head rail assembly 12 may not form a contact point with the top of the user's head and generate a corresponding pressing force in the wearing state due to the long length of the head rail assembly 12 or the difference of the user's head from one crowd to another. Based on this, in the wearing state, the movement module 11 may form a first contact point with the cheek of the user and apply a first pressing force to the head of the user; the head rail assembly 12 may form a second contact point with the user's head and apply a second compressive force to the user's head. Wherein the second contact point is closer to the top of the user's head than the first contact point in the direction of the vertical axis of the human body. In other words, the earphone 10 and the head of the user may actually form two first contact points and two contact points, simply referred to as "four-point wear". For the second contact point on one side of the head of the user, the number of the second contact points may be plural due to the longer length of the head beam assembly 12 or the difference of the head of the user among different people. Further, when the head beam assembly 12 forms the second contact point with the head of the user, there is at least partial non-contact between the head beam assembly 12 and the top of the head of the user, that is, the head beam assembly 12 does not fully contact with the head of the user and forms a corresponding pressing force, so as to maintain that the pressing force at the movement module 11 does not change greatly.

Similarly, for the aforementioned four-point wear, in the low head state, the second compressive force creates a first resistive moment relative to the first contact point, the compressive force at the first contact point creates a second resistive moment relative to the contact surface of the movement module 11 with the user's cheek when the head rest assembly 12 includes the auxiliary 125, and the compressive force at the first contact point creates a third resistive moment relative to the contact surface of the movement module 11 with the user's cheek when the head rest assembly 12 does not include the auxiliary 125. Wherein, the combined moment formed by the first resistance moment and the second resistance moment is larger than the third resistance moment. In short, the provision of the auxiliary member 125 on the head rest assembly 12 to introduce another moment of resistance is advantageous in overcoming the moment of gravity of the earphone 10 in the low head state, thereby improving the reliability of the earphone 10 in terms of wearing.

Similarly, for the aforementioned four-point wear, the compression force at the first contact point may be between 0.2N and 2N, and the compression force at the second contact point may be between 0.3N and 2N, so that the user achieves good wear stability and comfort, and the headset 10 exhibits good sound quality.

Similarly, for the aforementioned four-point wear, in the worn state, the two auxiliary members 125 connected to the arc-shaped head rest 121 form second contact points with both sides of the user's head, respectively; the auxiliary member 125 is provided to have elasticity such that the auxiliary member 125 may change the aforementioned first pressing force by less than or equal to 0.2N due to different degrees of elastic deformation when the earphone 10 is worn by users having different sized heads. In this way, when different users use the earphone 10, the auxiliary member 125 can apply a pressing force to the head of the user, so as to improve the stability of the earphone 10 in wearing, especially in a low-head state, and the pressing force of the core module 11 to the cheeks of the user can be not changed greatly, so as to maintain the expressive force of the earphone 10 in acoustic aspect.

Referring to fig. 53 and 54, the arched head beam 121 may include an inner housing 1211 and an outer housing 1212 coupled to the inner housing 1211, the inner housing 1211 being configured to contact a user's head, such as to form at least one of the first contact point and the third contact point described above. The inner housing 1211 may have a slot structure with a certain depth, and the outer housing 1212 may have a strip structure with a certain thickness, which may cooperate to form a routing channel, so that the electronic components on the left and right sides of the earphone 10 are electrically connected via the corresponding wires 1271. Further, the outer cover 1212 may have a greater structural strength than the inner housing 1211 to facilitate the head rail assembly 12 providing the necessary compression force for the deck assembly 11; the inner cartridge body 1211 may be softer than the outer cartridge body 1212 to facilitate better fit of the head rail assembly 12 to the user's head and to increase stability of wear. Wherein, because the inner bin 1211 and the outer bin 1212 have a certain difference in structural strength, material, etc., for convenience of assembly, the arched head beam 121 may include a reinforcement 1213 connected to the inner bin 1211, and the inner bin 1211 is connected to the outer bin 1212 through the reinforcement 1213. Illustratively, the material of the reinforcement 1213 may be the same as or similar to the outer cover 1212; the reinforcement 1213 and the inner bin 1211 may be integrally formed by an injection molding process, and the reinforcement 1213 and the outer bin 1212 may be detachably connected by a clamping connection.

Referring to fig. 55, 53 and 52, the arched head beam 121 may include an inner cap 1214, and the inner cap 1214 and the inner bin 1211 are coupled to the same side of the outer cap 1212, respectively. The end portion of the inner bin 1211 extends between the inner cover 1214 and the outer cover 1212, and in the process that the two ends of the head beam assembly 12 are gradually pulled apart along the direction away from each other, which is equivalent to that when the user wears the earphone 10, the two ends of the head beam assembly 12 are propped up by the head of the user, and the inner bin 1211 can partially withdraw from between the inner cover 1214 and the outer cover 1212. Thus, compared to the prior art in which the end of the inner housing 1211 is fixedly connected to the inner housing 1214 (and the outer housing 1212), the inner housing 1211 and the inner housing 1214 are configured to be capable of moving relatively, which is beneficial to releasing the stress of the inner housing 1211 during the opening process of the head beam assembly 12, especially the end of the inner housing 1211, so as to avoid the inner housing 1211 from being torn due to excessive deformation. Referring to fig. 56 (a), before the two ends of the head beam assembly 12 are pulled apart in the direction away from each other, the end of the inner housing 1211 extends between the inner cap 1214 and the outer cap 1212; referring to fig. 56 (b), after the two ends of the head beam assembly 12 are pulled apart from each other in a direction away from each other, the end of the inner housing 1211 is partially withdrawn from between the inner cap 1214 and the outer cap 1212.

In some embodiments, the inner cap 1214 and the outer cap 1212 may be two separate structural members. At this time, the end of the inner housing 1211 may be provided with a through hole 12111, the side of the inner housing 1214 facing the outer housing 1212 may be provided with a post 12141 extending into the through hole 12111, and the radial dimension of the post 12141 is smaller than the radial dimension of the through hole 12111, so that the inner housing 1211 is not only partially withdrawn from between the inner housing 1214 and the outer housing 1212, but also stopped by the post 12141 during the process of gradually pulling apart the two ends of the head beam assembly 12 in the directions away from each other, so as to avoid the end of the inner housing 1211 from being completely withdrawn from between the inner housing 1214 and the outer housing 1212, i.e., the inner housing 1211 may be always partially located between the inner housing 1214 and the outer housing 1212, so that the inner housing 1211 is better inserted between the inner housing 1214 and the outer housing 1212 during the rebound of the head beam assembly 12. Wherein the through hole 12111 may be a kidney-shaped hole provided in a length direction along an extending direction of the arc-shaped head beam 121 to provide a stroke space for the inner housing 1211 to move with respect to the inner cap 1214. Further, the number of through holes 12111 and the number of columns 12141 may be two, the two through holes 12111 may be disposed at intervals in a direction perpendicular to the extending direction of the head beam assembly 12, and the two columns 12141 may extend into one through hole 12111, respectively.

In some embodiments, the inner cap 1214 and the outer cap 1212 may be integrally formed as a structural member. At this time, the end of the inner case 1211 may be inserted between the inner case 1214 and the outer case 1212. Wherein, the insertion depth of the inner bin 1211 may be greater than the maximum withdrawal distance of the inner bin 1211 during the process of expanding the head beam assembly 12, that is, the inner bin 1211 may be always partially located between the inner cap 1214 and the outer cap 1212, so that the inner bin 1211 may be better inserted between the inner cap 1214 and the outer cap 1212 during the rebound process of the head beam assembly 12.

Further, in embodiments where the head beam assembly 12 includes the adapter 122, and the adapter 122 is capable of extending or retracting the arcuate head beam member 121 under external forces, the inner cap 1214 may be structurally stronger than the inner housing 1211 to facilitate the inner cap 1214 and outer cap 1212 to grip the adapter 122. In this case, the inner cap 1214 and the outer cap 1212 may be two separate structural members to facilitate assembly of the adapter 122. In embodiments where the head beam assembly 12 does not include the adapter 122, or where the head beam assembly 12 includes the adapter 122 but the adapter 122 cannot extend or retract the arcuate head beam member 121 under external forces, the inner cap 1214 may also be structurally stronger than the inner housing 1211 so that the inner cap 1214 and the outer cap 1212 define a space to accommodate the end of the inner housing 1211. At this time, the inner cap 1214 and the outer cap 1212 may be integrally formed as a single piece, or the inner cap 1214, the outer cap 1212, and the adapter 122 may be integrally formed as a single piece.

In some embodiments, the arched head beam 121 may be divided into a middle section and end sections connected to both ends of the middle section, respectively, with the arc length of the end sections being smaller than that of the middle section. Wherein, in the process that the two ends of the head beam assembly 12 are gradually pulled away from each other, the two end sections deflect relative to the middle section along the direction away from each other, which is beneficial to releasing the stress of the end part of the middle section close to the end sections. Illustratively, the intermediate section may include an inner housing 1211 and the end section may include an inner housing 1214, both of which may be pivotally connected by a pivot. Wherein the same side of the inner housing 1211 and the inner housing 1214 is provided with an outer housing 1212 to provide support. Referring to fig. 56 (a), before the two ends of the head beam assembly 12 are pulled apart in the direction away from each other, the end of the inner housing 1211 extends between the inner housing 1214 and the outer housing 1212, and the inner housing 1211 and the inner housing 1214 form a substantially smooth curve, with an angle therebetween equal to about 0 °; referring to fig. 56 (b), after the two ends of the head beam assembly 12 are pulled apart from each other in a direction away from each other, the angle between the inner housing 1211 and the inner housing 1214 is greater than 0 °, which corresponds to the end of the inner housing 1211 partially exiting from between the inner housing 1214 and the outer housing 1212.

Based on the above description, in embodiments where the head beam assembly 12 includes an arcuate head beam member 121 and an adapter 122, the adapter 122 can extend or retract the arcuate head beam member 121 under the influence of an external force to adjust the arc length of the head beam assembly 12. Based on this, and in connection with fig. 55, the head rail assembly 12 may include a damping member 126, the damping member 126 being configured to provide a damping feel during adjustment of the arc length of the head rail assembly 12 by a user, and to maintain the relative position between the adapter 122 and the arcuate head rail member 121, i.e., maintain the arc length of the head rail assembly 12, after the user adjusts the arc length of the head rail assembly 12 to a desired arc length.

As an example, in connection with fig. 55, the outer cover 1212 may be provided with a first guide slot 12121 for guiding the movement of the adapter 122 relative to the outer cover 1212 such that the adapter 122 extends or retracts the arcuate head beam 121 under the guidance of the first guide slot 12121. Further, the damping member 126 may be disposed on a side of the adapter 122 facing the inner cap 1214 and protruding from the first guide groove 12121, and the damping member 126 further abuts against the inner cap 1214 to provide resistance during extension or retraction of the adapter 122 into or out of the arcuate head beam 121, which is simple and reliable.

The end of the adaptor 122 near the inner bin 1211 may be provided with a receiving groove, for example, the receiving groove is formed at the end of the first connecting section 1221 far away from the second connecting section 1223, and the damping member 126 may be disposed in the receiving groove of the adaptor 122 and partially protrudes out of the adaptor 122, so that the damping member 126 abuts against the inner cap 1214, thereby providing corresponding resistance. In this manner, the relative position between the damping member 126 and the adapter member 122 is advantageously maintained.

The end of the adaptor 122 near the inner bin 1211 may be provided with a slider 1227, for example, the slider 1227 is disposed at the end of the first connecting section 1221 far from the second connecting section 1223, and the receiving slot may be disposed on the slider 1227. Wherein, in the direction perpendicular to the telescoping direction of the adaptor 122, the width of the slider 1227 may be greater than the width of the first connection section 1221; accordingly, the outer cover 1212 may be provided with a stop 12122 at an end of the first guide slot 12121 remote from the inner housing 1211, the stop 12122 being adapted to stop the slider 1227 to prevent the adapter 122 from being disengaged from the arched beam 121 due to "over-pulling".

The inner cap 1214 may be provided with a second guide groove 12142 for guiding the damper 126 during the extension or retraction of the adapter 122 into the arc-shaped head beam 121, and the second guide groove 12142 guides the adapter 122 together with the first guide groove 12121 to make it more reliable. Accordingly, the damping member 126 may abut against the bottom of the second guide groove 12142.

Based on the description of the present application, two ends of the head beam assembly 12 may be respectively connected to a core module 11, and the left and right sides of the earphone 10 may be respectively provided with a battery 14 and a motherboard 15, and electronic components such as a microphone assembly 16 and a functional assembly 17, which need to be electrically connected by corresponding wires, a flexible circuit board, etc., for example, at least a wire 1271 for electrically connecting the battery 14 and the motherboard 15 is inserted into the head beam assembly 12, so as to avoid the wire 1271 from being exposed. Further, the head rest assembly 12 may include an arc head rest member 121 and an adapter member 122, the adapter member 122 being configured to connect the arc head rest member 121 and the corresponding deck module 11, and the adapter member 122 being configured to extend or retract the arc head rest member 121 to adjust the arc length of the head rest assembly 12 so as to facilitate users of different sizes of heads to wear the headset 10. For this reason, the wire 1271 penetrating into the head beam assembly 12 needs to have a certain margin, for example, at least a portion of the wire 1271 is folded into the head beam assembly 12 to be unfolded along with the extension of the head beam assembly 12, so as to avoid the wire from being torn when the user adjusts the arc length of the head beam assembly 12. In addition, when the user shortens the arc length of the head rail assembly 12, the wire 1271 should also be restored to its original configuration as much as possible, e.g., folded up, so as to be unfolded again next following the elongation of the head rail assembly 12.

As an example, referring to fig. 57 and 53, the connecting wire assembly 127 may include a conductive wire 1271 and an auxiliary wire 1272 connected to the wire 1271, wherein the wire 1271 deforms under the stretching action of an external force to cause the auxiliary wire 1272 to elastically deform, and the auxiliary wire 1272 provides an elastic restoring force after the external force is released, and the elastic restoring force is used to restore the wire 1271 to the shape before deformation. As such, by providing the auxiliary wire 1272 in cooperation with the wire 1271, after the wire 1271 and the auxiliary wire 1272 are elongated, the auxiliary wire 1272 can assist in restoring the wire 1271 to the pre-elongated configuration so as to facilitate re-elongation of the wire 1271. Based on this, the connection wire assembly 127 may be disposed in the head beam assembly 12, for example, the lead 1271 and the auxiliary wire 1272 are located between the inner housing 1211 and the outer housing 1212, and the lead 1271 is further disposed through the adapter 122, so as to extend along the arc-shaped head beam 121 and extend along with the extension of the adapter 122 or retract along with the retraction of the adapter 122, and the electronic components such as the movement module 11, the battery 14, and the main board 15 may be electrically connected through the lead 1271. At this time, when the user adjusts the arc length of the long head beam assembly 12, the connecting wire assembly 127 is extended along with the extension of the adapter 122, so that the lead 1271 and the auxiliary wire 1272 are deformed together; when the user shortens the arc length of the head beam assembly 12, the connecting wire assembly 127 rebounds following the retraction of the adapter 122, so that the auxiliary wire 1272 is restored to the original configuration together with the lead 1271.

In some embodiments, the wire 1271 may be divided into a telescoping segment 12711 and a natural segment 12712 at each end of the telescoping segment 12711, the elastic modulus of the telescoping segment 12711 being between the elastic modulus of the natural segment 12712 and the elastic modulus of the auxiliary wire 1272, such as where the telescoping segment 12711 is a portion of the wire 1271 extending helically around at least a portion of the auxiliary wire 1272, and such as where the telescoping segment 12711 is a portion of the wire 1271 extending in a fold along at least the auxiliary wire 1272. As such, the wire 1271 is made to have a certain elasticity at the telescopic section 12711, and the wire 1271 has a margin to be elongated following the elongation of the head beam assembly 12. Based on this, the ratio between the length of the telescoping segment 12711 and the length of the wire 1271 may be between 0.1 and 0.5 in natural state, i.e. when no external force is applied to the wire 1271 or the telescoping segment 12711 is not deformed. Wherein if the aforementioned ratio is too small, the margin that tends to cause the wire 1271 to follow the elongation of the head rail assembly 12 is small; if the aforementioned ratio is too large, it may tend to result in excessive length of the wire 1271 after it is fully elongated, which may be detrimental to reducing the cost of the connection wire assembly 127.

In some embodiments, the wire 1271 may be divided into a telescoping section 12711 and a natural section 12712 at either end of the telescoping section 12711, the length of the telescoping section 12711 being greater than the length of the auxiliary wire 1272, again such that the wire 1271 has a margin that follows the elongation of the head beam assembly 12. In this case, the expansion and contraction section 12711 may not be provided in a spiral shape, or may be provided in a folded shape.

As an example, with reference to fig. 57, the auxiliary wire 1272 may include an elastic body 12721 and collars 12722 at both ends of the elastic body 12721, each collar 12722 may be respectively sleeved on a corresponding natural segment 12712 and stopped by a stop structure 12713 on the natural segment 12712 in the rebound direction of the telescopic segment 12711, so that the auxiliary wire 1272 is restored to the original shape together with the lead 1271. Wherein, in embodiments in which the telescoping section 12711 is the portion of the wire 1271 that extends helically around at least a portion of the auxiliary wire 1272, the resilient body 12721 may be threaded within the helically extending telescoping section 12711. Further, the limiting structure 12713 may be a protrusion integrally connected with the insulating layer of the wire 1271 or a knot formed by knotting the natural segment 12712.

It should be noted that: in embodiments where the telescoping segment 12711 is a helically extending portion of the wire 1271, i.e., where the telescoping segment 12711 is a spring-like helical structure, the auxiliary wire 1272 may not be provided if the spring constant of the telescoping segment 12711 is capable of returning to its original configuration after the wire 1271 is extended following extension of the head beam assembly 12. In other words, the headgear assembly 12 may include a headgear member 121, an adapter 122, and a wire 1271, the arched headgear member 121 being configured to bypass the crown of the user, the adapter 122 being connected to the arched headgear member 121 and being capable of extending or retracting the arched headgear member 121 under an external force, the wire 1271 being disposed within the headgear assembly 12, a portion of the wire 1271 being disposed in a helical configuration, and an end of the wire 1271 being connected to the adapter 122 to extend following extension of the adapter 122, the helical configuration of the wire 1271 allowing the wire 1271 to rebound following retraction of the adapter 122.

Based on the above-described related description, when the connecting wire assembly 127 is applied to the head beam assembly 12, the natural segment 12712 may be connected to the adapter 122 to allow the wire 1271 to extend following extension of the adapter 122 or to rebound following retraction of the adapter 122. Further, since the two ends of the arched head beam 121 may be respectively connected to the adapter 122, the connecting wire assembly 127 may be divided into two parts, for example, the middle region of the telescopic segment 12711 is fixed on the arched head beam 121, so that the two parts of the telescopic segment 12711 are not affected by each other when the user stretches the adapter 122 respectively.

As an example, referring to fig. 53, 57 and 54, the wire 1271 may be divided into a positioning segment 12714 and a natural segment 12712 at both ends of the positioning segment 12714, the positioning segment 12714 being fixed to the arc-shaped head beam 121, the natural segment 12712 being connected to the adapter 122, the wire 1271 being configured to be capable of being extended following extension of the adapter 122 or rebound following retraction of the adapter 122. The arrangement is such that the wires 1271 on both sides of the positioning segment 12714 are not affected by each other when the user stretches the adapters 122 on both sides of the arched head beam 121, respectively.

Further, the head beam assembly 12 may include a press 128 that is engaged with the arcuate head beam 121, the press 128 pressing the positioning segment 12714 against the arcuate head beam 121. The pressing member 128 may include a pressing portion 1281 and clamping portions 1282 located at two ends of the pressing portion 1281, each clamping portion 1282 is bent relative to the pressing portion 1281, the two clamping portions 1282 extend in the same direction toward one side of the pressing portion 1281 and can approach each other under the action of an external force, the pressing portion 1281 is used for pressing the positioning portion 12714, and the clamping portion 1282 is used for clamping with the arched beam 121. For example: the pressing part 1281 of the pressing piece 128 presses the positioning section 12714 of the wire 1271 on the outer cover 1212 of the arc-shaped head beam 121, and the clamping part 1282 of the pressing piece 128 is clamped with the outer cover 1212. Of course, in other embodiments, the positioning segments 12714 of the wires 1271 may also be glued directly to the outer cover 1212 of the arcuate head beam 121.

Further, the wire 1271 may be provided with a helically or accordion extending telescoping section 12711 between the locating section 12714 and the natural section 12712, or the wire 1271 may not be provided with a helically or accordion extending telescoping section 12711 between the locating section 12714 and the natural section 12712, but the length of the wire 1271 between the locating section 12714 and the natural section 12712 is greater than or equal to the amount of telescoping of the adapter 122. Wherein, when the wire 1271 is further divided into a telescopic section 12711 located between the positioning section 12714 and the natural section 12712, the elastic coefficient of the telescopic section 12711 is larger than that of either one of the positioning section 12714 and the natural section 12712. Similarly, the wire 1271 may be deformed with the aid of the auxiliary wire 1272, i.e., the auxiliary wire 1272 is used to provide an elastic restoring force when the wire 1271 is stretched.

Referring to fig. 20 and 21, the earphone 10 may further include a adapter housing 13 connecting the deck module 11 and the head beam assembly 12. Wherein, the cartridge housing 111 may rotate about a first axis (e.g., indicated by a dashed line A1 in fig. 20) relative to the adapter housing 13, and the adapter housing 13 may rotate about a second axis (e.g., indicated by a dashed line A2 in fig. 20) relative to the head beam assembly 12, so as to increase the degree of freedom of the cartridge module 11 in three dimensions relative to the head beam assembly 12. So, core module 11 and head beam assembly 12 can adapt to the profile of user's head better, and then increase stability and the comfort level that earphone 10 was worn, core module 11 also can laminate with user's skin better. Illustratively, a first axis of rotation of cartridge housing 111 relative to adapter housing 13 intersects a second axis of rotation of adapter housing 13 relative to head beam assembly 12 at a reference plane perpendicular to the direction of vibration of transducer assembly 112. Wherein the first axis and the second axis may be orthogonal to each other. For example: in the wearing state, the first axis is parallel to the sagittal axis of the human body; and/or the second axis is parallel to the human vertical axis. Wherein the first axis and the second axis may be both coplanar and non-planar in three-dimensional space.

Illustratively, the adaptor housing 13 is rotatably coupled to an end of the adaptor 122 remote from the arcuate head beam 121 (e.g., the second coupling segment 1223). Accordingly, the second connecting section 1223 may extend in the direction of the second axis.

Referring to fig. 20 and 27, the adaptor housing 13 is provided with a shaft cavity 131, and the adaptor 122 is inserted into the shaft cavity 131 along an axial direction (e.g., a direction along the second axis) of the shaft cavity 131. Further, the head beam assembly 12 may further include a locking member 123, where the locking member 123 is configured to limit the adaptor 122 along the axial direction of the spindle chamber 131, so that the adaptor 122 is retained in the spindle chamber 131. For example: referring to fig. 20, 22 and 27, a free end (e.g., a second connecting section 1223) of the adaptor 122 is provided with a clamping groove 1225, after the adaptor 122 is inserted into the rotating shaft cavity 131 from one end of the rotating shaft cavity 131, the clamping groove 1225 is exposed from the other end of the rotating shaft cavity 131, the locking member 123 is clamped in the clamping groove 1225, and a radial dimension of the locking member 123 is greater than a radial dimension of the rotating shaft cavity 131, so as to perform locking in a direction opposite to a plugging direction in which the adaptor 122 is inserted into the rotating shaft cavity 131. Further, a limiting groove 1226 is formed in an outer peripheral wall of the adaptor 122 (e.g., the second connecting section 1223), and a limiting block 132 is disposed on an inner peripheral wall of the rotating shaft cavity 131, and the limiting block 132 is embedded into the limiting groove 1226 to limit a rotation angle of the adaptor 122 relative to the rotating shaft cavity 131. The rotation angle of the adapter housing 13 relative to the head beam assembly 12 may be between 5 ° and 15 °, which is convenient for the earphone 10 to adapt to the head profile of the user and to wear.

Referring to fig. 23 and 24, the earphone 10 may further include a battery 14 coupled to the deck module 11 (specifically, the transducer 112) and a main board 15, where the battery 14 is configured to supply power to the main board 15, and the main board 15 is configured to control the transducer 112 to convert the electrical signal into mechanical vibration. The capacity of the battery 14 may be greater than or equal to 200mAh to increase the cruising ability of the earphone 10. Further, the adaptor housing 13 may be used to provide a battery 14 or a main board 15, for example, the battery 14 and the main board 15 are respectively located in the adaptor housing 13 on the left and right sides of the earphone 10. In other words, the battery 14 is connected to one of the two deck modules 11, and the main board 15 is connected to the other of the two deck modules 11. In this way, the total weight of the movement module 11 can be reduced so as to improve the sound quality of the earphone 10, and the total weight of the left and right sides of the earphone 10 can be shared so as to improve the wearing stability and comfort of the earphone 10.

As an example, the adaptor housing 13 may include a middle plate 133 connected to the adaptor 122, a cylindrical side wall 134 surrounding the middle plate 133, and a housing 135 fastened to the cylindrical side wall 134, so that the housing 135 is connected to the middle plate 133, and the three may also enclose a receiving space. In other words, the adapter housing 13 may form a receiving space for receiving an electronic component, which may be the battery 14 or the motherboard 15, or may be the switch assembly 162 and/or the functional assembly 17, or may be another light source such as an LED or a light guide thereof. The battery 14 or the main board 15 may be supported and fixed by the adapter housing 13, and may be located on a side of the adapter housing 13 facing the transducer 112, for example, the battery 14 or the main board 15 is disposed between the housing 135 and the middle board 133. At this time, the cartridge case 111 and the housing 135 may be located at opposite sides of the middle plate 133, respectively, and the battery 14 or the main plate 15 may be disposed at intervals from the cartridge case 111 in the vibration direction of the transducer 112, that is, the battery 14 or the main plate 15 may be stacked inside and outside the cartridge module 11. Of course, in other embodiments, such as where adapter housing 13 does not include a housing 135, battery 14 or motherboard 15 may be located on the same side of midplane 133 as cartridge housing 111. Correspondingly, the rotating shaft cavity 131 can be arranged on the cylindrical side wall 134 and the middle plate 133, and the adapter 122 can be rotationally connected with the middle plate 133; the deck housing 111 is rotatably coupled to the cylindrical side wall 134.

The inventors of the present application found in the course of long-term development that: referring to fig. 23 and 32, when the battery 14 and the transducer 112 are disposed together at intervals in the vibration direction of the transducer 112, the ratio between the capacity of the battery 14 and the sum of the weights of the deck housing 111 and the battery 14 may be between 11mAh/g and 24.5mAh/g, which is beneficial to considering the weight of the earphone 10 at the deck module 11 while extending the cruising ability of the earphone 10. Further, in the embodiment where the earphone 10 includes the adaptor housing 13 connected to the deck housing 111, since the adaptor housing 13 is rigidly connected to the deck housing 111, the battery 14 needs to drive the two housings to vibrate, which is more power consuming, and thus the battery 14 needs to have a larger capacity. Based on this, the battery 14 is disposed in the adapter housing 13, and the ratio between the capacity of the battery 14 and the sum of the weights of the core housing 111 and the adapter housing 13 may be between 55mAh/g and 220mAh/g, which is beneficial to prolonging the cruising ability of the earphone 10 while taking into account the weight of the earphone 10 at the core module 11. Wherein the capacity of the battery 14 may be greater than or equal to 200mAh, the sum of the weights of the cartridge housing 111 and the battery 14 may be between 9g and 20g, and the sum of the weights of the cartridge housing 111 and the adapter housing 13 may be Between 1g and 4 g. Further, since the transducer 112 transmits mechanical vibration to the user mainly through the vibration panel 114, when the capacity of the battery 14 is constant, the larger the area of the vibration panel 114 in contact with the skin of the user is, the higher the efficiency of transmitting mechanical vibration by the vibration panel 114 is, the heavier the weight of the vibration panel 114 is, the smaller the area of the vibration panel 114 in contact with the skin of the user is, the lower the efficiency of transmitting mechanical vibration by the vibration panel 114 is, and the lighter the weight of the vibration panel 114 is. Based on this, the ratio between the capacity of the battery 14 and the area of the vibration panel 114 in contact with the skin of the user may be between 0.37mAh/mm ² And 0.73/mm ² Between them. Wherein the area of the vibration panel 114 in contact with the skin of the user may be 300mm ² And 600mm ² Between them.

Further, in connection with fig. 34, the transducer 112 may be rigidly connected to the cartridge housing 111, for example, the coil 1123 is connected to the support 1121, and the support 1121 is rigidly connected to the cartridge housing 111, i.e., the transducer 112 is not elastically connected to the cartridge housing 111 through the first vibration-transmitting plate 113. At this time, the coil 1123 drives the deck housing 111 to vibrate, that is, the deck housing 111 vibrates following the transducer 112, thereby transmitting mechanical vibration generated by the transducer 112 to the skin of the user through the deck housing 111. Accordingly, the deck housing 111 and the adapter housing 13 form an elastic connection, for example, the deck housing 111 is connected to the cylindrical sidewall 134 through the elastic connection member 137, and the deck housing 111 or the adapter housing 13 is connected to the head beam assembly 12, so as to attenuate the vibration of the adapter housing 13 along with the transducer 112, thereby reducing the noise leakage of the earphone 10. The adaptor housing 13 is disposed in a stacked manner with the cartridge housing 111 along the vibration direction of the transducer 112, and is located on a side of the cartridge housing 111 away from the vibration panel 114, where the adaptor housing 13 has a first projection area, such as an area of the middle plate 133, on a reference plane perpendicular to the vibration direction, and the cartridge housing 111 has a second projection area, such as an area of the second end wall 1114, on the reference plane, where a ratio between the first projection area and the second projection area may be between 0.2 and 1.5, preferably between 0.2 and 1, more preferably between 0.2 and 0.5, so as to reduce a baffle effect, and further reduce leakage of the earphone 10. Further, along the vibration direction of the transducer 112, the gap between the cartridge housing 111 and the adaptor housing 13 may be between 1mm and 10mm, preferably between 2mm and 8mm, to reduce the acoustic cavity effect, thereby reducing the leakage sound of the earphone 10. When any one of the cartridge case 111 and the adapter case 13 is of an irregular structure, for example, any one of a side of the cartridge case 111 facing the adapter case 13 and a side of the adapter case 13 facing the cartridge case 111 is of a non-planar structure, or a side of the cartridge case 111 facing the adapter case 13 and a side of the adapter case 13 facing the cartridge case 111 are of a planar structure but are not parallel to each other, a gap between the cartridge case 111 and the adapter case 13 may be defined as a minimum gap between the cartridge case 111 and the adapter case 13. It should be noted that: the baffle effect is that the transfer shell 13 can change the propagation direction of the leakage sound on the side of the movement shell 111 away from the vibration panel 114, and the application does not want to have larger leakage sound in front of the user in the wearing state; the acoustic cavity effect is that the gap between the adapter housing 13 and the cartridge housing 111 forms an acoustic cavity and generates leakage sound due to air conduction resonance of the acoustic cavity, and the present application is not expected to generate larger leakage sound.

It should be noted that: in other embodiments, such as where the deck module 11 does not rotate relative to the head beam assembly 12 or where the deck module 11 rotates about only one axis (e.g., the second axis A2), the headset 10 may not include the adapter housing 13, such as where the adapter 122 is fixedly or rotatably coupled to the deck housing 111. Further, in conjunction with fig. 25 and 26, the battery 14 or the main board 15 may be disposed at other positions than the area where the deck module 11 is located. For example: the earphone 10 may further include a support 124 coupled to the head rail assembly 12, and the battery 14 or the main board 15 may be disposed within the support 124. The support 124 may be formed as part of the head beam assembly 12, although the battery 14 or the main board 15 may be disposed directly within the head beam assembly 12 (e.g., the arcuate head beam 121). In connection with fig. 25, in the worn state, the support 124 is spaced apart from the movement module 11 along the sagittal axis of the human body, i.e., the battery 14 or the main board 15 is stacked back and forth with the movement module 11, for example, the movement module 11 is closer to the front side of the user's head than the support 124. In connection with fig. 26, in the worn state, the support 124 is spaced apart from the movement module 11 along the vertical axis of the human body, for example, the movement module 11 is further away from the top of the user's head than the support 124.

Referring to fig. 27 to 28 and fig. 20 to 21, the deck housing 111 may rotate about the first axis A1 relative to the adapter housing 13, and the peripheral edge 116 may be connected to an end of the deck housing 111 away from the adapter housing 13, that is, the peripheral edge 116 may be connected to an end of the deck housing 111 near the vibration panel 114. Wherein, the peripheral edge 116 may include a connection portion 1162 connected to the cartridge housing 111 and a flange portion 1163 connected to the connection portion 1162, and the flange portion 1163 is at least partially spaced from the adaptor housing 13 (e.g., the cylindrical side wall 134) in the vibration direction of the transducer 112, so as to allow the cartridge module 11 to rotate relative to the adaptor housing 13. The flange 1163 is located on the outer periphery of the cartridge case 111, and overlaps the adapter case 13 (e.g., the cylindrical side wall 134) as viewed in the vibration direction of the transducer 112. In this way, the rotation angle of the deck module 11 relative to the adapter housing 13 can be limited within a certain angle range, for example, between 5 ° and 15 °, which is convenient for the earphone 10 to adapt to the contour of the head of the user and is convenient for the user to wear. Further, in the non-wearing state, the gap between the flange portion 1163 and the adaptor housing 13 in the vibration direction of the transducer 112 (e.g., as shown in fig. 27 and 28) gradually increases in a reference direction, which is defined as a direction perpendicular to the vibration direction and the direction in which the first axis is located and away from the first axis, starting from the axis (e.g., the first axis A1) in which the cartridge housing 111 rotates relative to the adaptor housing 13. Wherein the aforementioned reference direction may be parallel to the second axis direction A2. In this way, the overall dimensions of the movement module 11 and the adapter housing 13 in the vibration direction of the transducer 112 are advantageously reduced, so that the structure of the earphone 10 is more compact.

As an example, the maximum gap (e.g. W in fig. 27) between the flange portion 1163 and the adaptor housing 13 in the vibration direction of the transducer device 112 may be between 2mm and 5mm, preferably between 2.5mm and 4mm, and the minimum gap (e.g. W in fig. 28) may be zero or near zero, allowing the cartridge housing 111 to rotate relative to the adaptor housing 13.

Further, the flange 11 may be disposed in an arc shape on a side facing the adapter housing 13 when viewed along a direction along an axis (e.g., the first axis A1) along which the deck 111 rotates relative to the adapter housing 13, so as to increase the appearance quality of the earphone 10. The radius of the arc of the flange 1163 facing the adapter housing 13 is greater than or equal to 50mm, so that the bending degree of the flange 1163 is not abnormally large, that is, the flange 1163 is relatively smoothly bent and extended, thereby improving the appearance quality of the earphone 10.

As an example, the deck housing 111 may include a first deck housing 111a, a second deck housing 111b, and a surrounding edge 116, and the second deck housing 111b and the surrounding edge 116 may be connected with the first deck housing 111a, respectively. The first cartridge case 111a may include an inner cylinder wall 1112 and a first outer cylinder wall 1115, where the inner cylinder wall 1112 is located at the periphery of the transducer 112, and the first outer cylinder wall 1115 is located at the periphery of the inner cylinder wall 1112 and is spaced apart from the inner cylinder wall 1112 in a direction perpendicular to the vibration direction of the transducer 112. Further, the second deck housing 111b is connected to the inner cylinder wall 1112, and the skirt 116 is connected to the first outer cylinder wall 1115 and surrounds the vibration panel 114. At this time, the mounting hole 1111 may be opened to the second deck housing 111b. Thus, the structure of the deck module 11 is simplified, and the assembly is simplified. Specifically, the transducer 112 and the first vibration-transmitting piece 113 may be first installed in the inner cylinder wall 1112, then the second cartridge case 111b is connected to the inner cylinder wall 1112, then the vibration panel 114 is connected to the transducer 112 through the connector 115, and finally the peripheral edge 116 is connected to the first outer cylinder wall 1115.

In some embodiments, the second cartridge housing 111b may include a first end wall 1113 and a cylindrical side wall 1116 coupled to the first end wall 1113, the cylindrical side wall 1116 being located between the inner cylinder wall 1112 and the first outer cylinder wall 1115 and being snapped into engagement with the inner cylinder wall 1112. For example: one of the inner cylinder wall 1112 and the cylindrical side wall 1116 is provided with a buckling groove, and the other is provided with a back-off matched with the buckling groove so as to facilitate the buckling and clamping connection of the second movement shell 111b and the first movement shell 111 a. In other embodiments, the second cartridge case 111b may include only the first end wall 1113, where the first end wall 1113 covers the end surface of the inner cylinder wall 1112, and the two may be connected by a heat stake. Further, when the second deck housing 111b is engaged with the first deck housing 111a, the peripheral region of the first vibration-transmitting piece 113 may be pressed against the end face of the inner cylinder wall 1112, and of course, the first vibration-transmitting piece 113 may be engaged with or glued to the inner cylinder wall 1112.

In some embodiments, one of the connecting portion 1162 and the first outer barrel wall 1115 is provided with a fastening slot, and the other is provided with a back-off that is matched with the fastening slot, so that the peripheral edge 116 is fastened and clamped with the first cartridge housing 111 a. Wherein, the connecting part 1162 may be provided in a cylindrical shape and may be located at the periphery of the first outer cylinder wall 1115; the flange portion 1163 is correspondingly located on the periphery of the first outer barrel wall 1115.

Further, the side of the vibration panel 114 facing away from the transducer 112 may include an edge area 1143 connected to the skin contact area 1141, where the edge area 1143 is located at the periphery of the skin contact area 1141 and is spaced from the skin contact area 1141 in the vibration direction of the transducer 112, for example, the plane of the edge area 1143 is parallel to the plane of the skin contact area 1141. Accordingly, the peripheral edge 116 may further include a limiting portion 1164 connected to the connecting portion 1162, where the limiting portion 1164 is located on a side of the vibration panel 114 facing away from the transducer 112. Wherein, the limit portion 1164 overlaps the edge region 1143 and is offset from the skin contact region 114 when viewed along the vibration direction of the transducer 112. In this way, the peripheral edge 116 does not affect the vibration of the vibration panel 114 along with the transducer 112, and can also prevent the vibration panel 114 from falling off, thereby increasing the reliability of the earphone 10. Accordingly, in the non-worn state, the skin contact region 1141 may protrude beyond a side of the stopper 1164 facing away from the transduction device 112 in the vibration direction of the transduction device 112.

Based on the related description above, and in conjunction with fig. 6, the side of the vibration panel 114 facing away from the transduction device 112 may further include an air conduction enhancing region 1142, and the air conduction enhancing region 1142 may be connected between the skin contact region 1141 and the edge region 1143. Since the edge region 1143 may not contact with the skin of the user, at least a portion of the edge region 1143 not covered by the limiting portion 1164 may also be used as the air guide enhancing region 1142, so as to increase the size of the air guide enhancing region 1142, thereby improving the effect of air guide on bone conduction.

As an example, the connection member 115 may include a first connection member 1151 connected to the transducer 112 and a second connection member 1152 connected to the vibration panel 114, e.g., the first connection member 1151 is integrally formed with the bracket 1121, e.g., the second connection member 1152 is integrally formed with the vibration panel 114. One of the first and second connection members 1151 and 1152 may be provided in a cylindrical structure, and the other may be provided in a rod-like structure embedded in the cylindrical structure so that the connection member 115 connects the transducer 112 with the vibration panel 114.

Further, the first cartridge case 111a may further include a second outer cylinder wall 1117, the second outer cylinder wall 1117 being located at the periphery of the inner cylinder wall 1112 and spaced apart from the inner cylinder wall 1112 in a direction perpendicular to the vibration direction of the transducer 112. Wherein the second outer cylindrical wall 1117 extends opposite the first outer cylindrical wall 1115 so as to connect the adaptor housing 13 and the peripheral edge 116, respectively; the second outer cylinder wall 1117 is located inside the flange portion 1163 to allow the flange portion 1163 to overlap the cylindrical side wall 134 in the vibration direction of the transducer 112. Accordingly, the cylindrical side wall 134 may be located at the periphery of the second outer cylinder wall 1117, one of the cylindrical side wall 134 and the second outer cylinder wall 1117 may be provided with a shaft hole, and the other may be provided with a rotation shaft engaged with the shaft hole, and the rotation shaft is embedded in the shaft hole to allow the cartridge case 111 to rotate relative to the adaptor case 13. In view of the quality of the exterior of the earphone 10 and the wall thickness of the cylindrical side wall 134, the shaft hole is preferably formed in the second outer cylindrical wall 1117, and the rotation shaft is correspondingly disposed on the cylindrical side wall 134. Further, in order to increase the reliability of the rotational connection between the cartridge housing 111 and the adaptor housing 13, the first cartridge housing 111a may further include a reinforcing column 1118, and the reinforcing column 1118 may connect the second outer cylinder wall 1117 with the inner cylinder wall 1112, thereby partially reinforcing the second outer cylinder wall 1117 so as to open the shaft hole. Illustratively, the cylindrical sidewall 134 is provided with a shaft 136, the reinforcing post 1118 is provided with a shaft hole, and the shaft 136 extends into the shaft hole of the reinforcing post 1118.

Based on the above description, and referring to fig. 8 and 9, the movement module 11 may be provided with an acoustic cavity in communication with the accommodating cavity 100, where the acoustic cavity is used to absorb acoustic energy of an acoustic wave formed by the air in the accommodating cavity 100 vibrating with the transducer 112, and the acoustic wave may be output to the outside of the earphone 10 through the mounting hole 1111 to form an air guide sound. Wherein the second outer cylinder wall 1117, the inner cylinder wall 1112, and the transition wall 1119 may enclose the aforementioned acoustic cavity. Based on this, the first deck housing 111a itself may enclose an acoustic chamber, such as the helmholtz resonator 200; the first cartridge case 111a may also enclose an acoustic chamber, such as the acoustic filter 300, with the adaptor case 13.

As an example, the first cartridge housing 111a may further include a transition wall 1119 and a cover plate 1120 connected between the inner cylinder wall 1112 and the second outer cylinder wall 1117, and the transition wall 1119 and the cover plate 1120 are disposed at intervals in the vibration direction of the transducer 112 so as to enclose the inner cylinder wall 1112 and the second outer cylinder wall 1117 to form the helmholtz resonator 200. At this time, the inner cylinder wall 1112 may be provided with a communication hole for communicating the helmholtz resonator 200 and the accommodating chamber 100. The transition wall 1119 may also be connected between the first outer cylinder wall 1115 and the inner cylinder wall 1112, i.e., the second outer cylinder wall 1117 and the first outer cylinder wall 1115 are respectively located on opposite sides of the transition wall 1119 and extend in opposite directions.

Further, the transition wall 1119 and the cover 1120 may be spaced apart from each other in the vibration direction of the transducer 112, so as to increase the volume of the helmholtz resonator 200, which is beneficial for the helmholtz resonator 200 to absorb sound energy in a wider frequency band, i.e. the frequency response curve is flatter in a wider frequency band, so that the sound quality of the earphone 10 is more balanced. To this end, the cover plate 1120 may be flush with the second end wall 1114 to enlarge the helmholtz resonator 200 in the direction of vibration of the transduction device 112; the second outer cylinder wall 1117 may be located at the periphery of the first outer cylinder wall 1115 to increase the helmholtz resonator 200 in a direction perpendicular to the vibration direction of the transducer 112, so that the structure of the deck module 11 is more compact. Of course, the second outer cylindrical wall 1117 may also be located inside the first outer cylindrical wall 1115, or overlap the first outer cylindrical wall 1115 in the vibration direction of the transducer assembly 112, when the helmholtz resonator 200 meets the corresponding acoustic requirements. Further, in connection with fig. 32, the transition wall 1119 may include a first sub-transition wall 11191 and a second sub-transition wall 11192, the first sub-transition wall 11191 connecting the inner cylinder wall 1112 and the first outer cylinder wall 1115, and the second sub-transition wall 11192 connecting the first outer cylinder wall 1115 and the second outer cylinder wall 1117. The second sub-transition wall 11192 and the first sub-transition wall 11191 are disposed at intervals in the vibration direction of the transducer 112, and the second sub-transition wall 11192 is further away from the middle plate 133, i.e., closer to the vibration panel 114, than the first sub-transition wall 11191, so as to fully utilize the peripheral area of the peripheral edge 116 where the flange 1163 is located and the height difference between the peripheral edge 116 and the second housing 111b, which are respectively engaged with the first housing 111a, in the vibration direction of the transducer 112, thereby further increasing the helmholtz resonator 200 in the vibration direction of the transducer 112.

It should be noted that: in other embodiments, such as where cartridge housing 111 does not rotate relative to adaptor housing 13, first cartridge housing 111a may not include cover plate 1120 and the end of helmholtz resonator 200 adjacent second end wall 1114 may be sealed by midplane 133. In other embodiments, such as those in which an acoustic chamber is provided as the acoustic filter 300, in conjunction with fig. 32, the first cartridge housing 111a may also not include a cover 1120 to allow sound waves formed by air within the housing chamber 100 as the transducer 112 vibrates to be transmitted to the exterior of the earphone 10 (as shown by the path of the dashed line in fig. 32) via a gap or other path between the second outer cylinder wall 1117 and the cylindrical side wall 134. In other words, the acoustic filter 300 according to the present application may be formed by surrounding the second end wall 1114, the inner cylinder wall 1112, the transition wall 1119, and the second outer cylinder wall 1117 with the middle plate 133 and the cylindrical side wall 134, and the sound wave is absorbed by the acoustic filter 300 and then transmitted to the outside of the earphone 10 through the gap between the cylindrical side wall 134 and the second outer cylinder wall 1117. At this time, the inner tube wall 1112 may be provided with a communication hole for communicating the acoustic filter 300 with the housing chamber 100. Accordingly, the gap between the middle plate 133 and the second end wall 1114 in the vibration direction of the transducer 112 may be larger than the gap between the cylindrical side wall 134 and the second outer cylindrical wall 1117 in the direction perpendicular to the vibration direction of the transducer 112, so that the sound wave formed by the air in the accommodating chamber 100 along with the vibration of the transducer 112 is transmitted to the outside of the earphone 10 through the gap between the second outer cylindrical wall 1117 and the cylindrical side wall 134, and the volume of the acoustic filter 300 is increased to absorb the sound energy in a wider frequency band. The gap between the second outer cylinder wall 1117 and the inner cylinder wall 1112 in the direction perpendicular to the vibration direction of the transducer 112 may be larger than the gap between the middle plate 133 and the second end wall 1114 in the vibration direction of the transducer 112 to increase the volume of the acoustic filter 300 by utilizing the space at the periphery of the inner cylinder wall 1112. Further, in other embodiments, such as where the cartridge module 11 is not provided with an acoustic cavity or, for example, the helmholtz resonator 200 is provided on the transducer 112, the first cartridge housing 111a may not include the cover 1120, and the transition wall 1119 may be a discontinuous structure, so long as the connection between the first outer cylinder wall 1115, the second outer cylinder wall 1117 and the inner cylinder wall 1112 is satisfied. At this time, the second outer cylinder wall 1117 may also be located inside the first outer cylinder wall 1115, or overlap the first outer cylinder wall 1115 in the vibration direction of the transducer 112, so that the structure of the movement module 11 is more compact.

Referring to fig. 24, 27 and 29, the earphone 10 may further include a wand assembly 16 connected to a housing, and the wand assembly 16 may be rotated relative to the housing. When the earphone 10 is not provided with the adapter housing 13, the housing may be the movement housing 111; when the earphone 10 is provided with the adapter housing 13, the housing may be the deck housing 111 or the adapter housing 13. In this embodiment, the housing 135 is taken as an example, that is, the microphone assembly 16 is connected to the housing 135 and can rotate relatively. Further, the wand assembly 16 may include a pickup assembly 161 and a switch assembly 162, and the switch assembly 162 may be disposed on the pickup assembly 161 to extend the functionality of the headset 10.

Illustratively, pickup assembly 161 may include a pivot connection block 1611, a connection rod 1612, and a pickup 1613, pivot connection block 1611 being configured to pivotally connect with a housing (e.g., housing 135), such as with pivot connection block 1611 partially embedded within a pivot hole of housing 135, one end of connection rod 1612 being connected to pivot connection block 1611, such as with both being locked by a lock 1616, and pickup 1613 being disposed at the other end of connection rod 1612. The number of the sound pick-up 1613 may be one, and is used for collecting the voice of the user; or two, one is used for collecting the voice of the user, and the other is used for noise reduction. Further, a side of the pivot connection block 1611 facing away from the housing may be provided with a recessed area, and the switch assembly 162 may be disposed within the recessed area, so that the earphone 10 is more compact in structure. Wherein the side of the switch assembly 162 facing away from the housing may be (approximately) flush with the pivot connection block 1611. Further, the pickup assembly 161 may further include a sealing ring 1614, where the sealing ring 1614 may be located at the periphery of the pivot hole of the housing 135 and disposed between the end surface of the pivot connection block 1611 facing the housing 135 and the end surface of the housing 135 facing the pivot connection block 1611, so that the sealing ring 1614 may be pressed when the microphone assembly 16 is assembled and connected with the housing 135, which is simple and reliable.

Referring to fig. 29, a boss 1615 is disposed at the bottom of the recess region, and an annular groove is formed between the outer peripheral wall of the boss 1615 and the sidewall of the recess region. Accordingly, the switch assembly 162 may include a switch circuit board 1621, an elastic support 1622 and a key 1623, the switch circuit board 1621 being coupled with the main board 15 and may be disposed at the top of the boss 1615, the elastic support 1622 being connected with the sidewall and/or the bottom of the recess area on the pivot connection block 1611 and being configured to support the key 1623, the key 1623 may be disposed opposite to the switch circuit board 1621 (e.g., a tact switch thereon) in a predetermined pressing direction to receive a pressing force applied by a user and trigger the switch circuit board 1621 through the elastic support 1622. The elastic supporting component 1622 may include an annular fixing portion 1624 and an elastic supporting portion 1625, where the annular fixing portion 1624 is fixed in the annular groove, and the elastic supporting portion 1625 is connected with the annular fixing portion 1624 and may be arranged in a dome shape, so that the elastic supporting portion 1625 deforms relative to the annular fixing portion 1624 under the action of an external force and further moves closer to the switch circuit board 1621. At this time, the key 1623 may be disposed on the elastic support portion 1625. The key 1623 may include a key cap and a key rod connected to the key cap, where the key cap is supported on the elastic supporting portion 1625, and the key rod is embedded in a blind hole preset in the elastic supporting portion 1625. However, the inventors of the present application found during long-term development that: in the embodiment shown in fig. 29, since the key lever of the key 1623 is relatively high, that is, the key lever is embedded into the elastic supporting portion 1625 relatively deeply, the technical problem that the key 1623 is blocked with the inner wall of the pivot connection block 1611 due to leverage when the user presses the edge of the key cap of the key 1623 is easily caused; in addition, the elastic supporting portion 1625 has a relatively thick thickness, which tends to result in poor rebound effect after the user presses the key 1623. To this end, referring to fig. 62, the key 1623 may include a key cap 16231, a key lever 16232, and an annular flange 16233, the key lever 16232 and the annular flange 16233 being connected to the same side of the key cap 16231, the annular flange 16233 surrounding the key lever 16232. Wherein the key lever 16232 and the annular flange 16233 are embedded in the elastic support portion 1625, for example, each is embedded in a blind hole preset in the elastic support portion 1625; the key lever 16232 is projected forward in the pressing direction of the key 1623 to overlap with a protruding switching element on the switching circuit board 1621 when being projected forward to the switching circuit board 1621, so that the switching circuit board 1621 is triggered when the user presses the key 1623. In this way, the limitation of the annular flange 16233 is beneficial to weakening the lever effect of the edge of the key cap 16231 relative to the key lever 16232, thereby improving the technical problem of the locking of the key 1623 and the inner wall of the pivot connection block 1611. Wherein the raised height of annular flange 16233 and the raised height of key 16232 are equal to avoid annular flange 16233 being too short to function accordingly. Further, the protrusion height of the key lever 16232 is less than or equal to the protrusion height of the switching element on the switching circuit board 1621, which is advantageous to reduce the thickness of the elastic supporting portion 1625, thereby increasing the rebound effect after the user presses the key 1623.

The annular fixing portion 1624 and the elastic support portion 1625 may be integrally provided, such as a silicone member. At this time, the switch assembly 162 may further include a reinforcing ring 1626, the reinforcing ring 1626 being lined on the annular fixing portion 1624 along a circumferential direction of the annular fixing portion 1624 and fixedly connected with the pivot connection block 1611. For example: the reinforcing ring 1626 is sleeved on the outer periphery of the annular fixing portion 1624, and the outer peripheral wall of the reinforcing ring 1626 is fixedly connected (e.g. clamped) with the side wall of the recessed region. In this way, when the user presses the switch assembly 162, the periphery of the elastic supporting portion 1625 can be uniformly deformed relative to the annular fixing portion 1624, so as to increase the reliability and pressing feeling of the switch assembly 162. The reinforcing ring 1626 may be a metal or a hard plastic. In addition, due to the limited volume of the concave area of the pivot connection block 1611, the area of the bottom of the annular groove is limited, and the elastic supporting element 1622 is connected with the pivot connection block 1611 laterally through the reinforcing ring 1626, which is beneficial to improving the reliability of the connection between the two. Of course, if the volume of the recessed area on the pivot connection block 1611 is large enough so that the area of the bottom of the annular groove is also large enough, the resilient support 1622 may be directly connected to the bottom of the annular groove without the need for the stiffening ring 1626.

It should be noted that: in other embodiments, such as those in which the headset 10 is not provided with the wand assembly 16, the switch assembly 162 may also be provided directly on a housing (e.g., the cartridge housing 111 or the housing 135) of the headset 10.

Further, the switch assembly 162 may further include a hard spacer 1627 connected to the elastic support 1622, for example, the hard spacer 1627 is a hard plastic such as PET and is connected to the elastic support 1625, such that the elastic support 1622 triggers the tact switch through the hard spacer 1627, thereby preventing the tact switch on the switch circuit board 1621 from piercing the elastic support 1622, and increasing the reliability of the switch assembly 162.

The inventors of the present application found in the course of long-term development that: in the process of generating mechanical vibration, the transducer 112 drives the elastic supporting member 1622 connected to the casing (e.g. the movement casing 111 or the casing 135) to vibrate, so as to drive the key 1623 and the hard pad 1627 connected thereto to vibrate together, which generally includes multiple vibration modes such as up-down vibration and swing vibration. Wherein, during the up-down vibration, the hard pad 1627 may collide with the tact switch on the switch circuit board 1621 directly to generate noise; in the case of the swinging vibration, the hard pad 1627 may generate sliding friction with the tact switch on the switch circuit board 1621, thereby causing up-and-down vibration, and generating harmonic sounds, i.e. noise, with the frequency of the transducer 112 being an integer multiple. For this reason, the present application proposes the following embodiments to improve the noise problem of the earphone 10.

In some embodiments, in conjunction with fig. 30, in the non-pressing state, the gap between the hard pad 1627 and the tact switch on the switch circuit board 1621 in the pressing direction (e.g. W shown in fig. 30) may be larger than the vibration amplitude of the key assembly following the transducer 112, so as to avoid noise generated by the collision between the hard pad 1627 and the tact switch, and further increase the reliability of the earphone 10. The key assembly of the present application may include an elastic supporting member 1622 and a hard pad 1627 connected thereto, and may further include a key 1623 connected thereto. Further, the gap between the hard pad 1627 and the tact switch in the pressing direction may be greater than or equal to 0.1mm, but may be between 0.05mm and 0.1 mm.

In other embodiments, referring to fig. 31, in the non-pressing state and in the process that the key assembly vibrates along with the transducer 112, the tact switch on the switch circuit board 1621 and the key assembly keep following, that is, the hard pad 1627 and the tact switch are difficult to generate relative sliding friction, so as to avoid noise generated by the key assembly due to the swinging vibration, and further increase the reliability of the earphone 10. The tact switch on the switch circuit board 1621 may partially extend into a blind hole preset in the hard pad 1627 to prevent the hard pad 1627 from sliding with the tact switch. Further, the inner surface of the blind hole may be provided as a roughened surface; and/or the outer surface of the tact switch, which is contacted with the inner surface of the blind hole, can be provided with a rough surface so as to increase static friction force or dynamic friction force, and noise can be improved.

Further, the key assembly may be configured in a non-circular configuration, as viewed in the direction of depression of the switch assembly 162, to avoid rocking vibration of the key assembly with the transducer 112.

Based on the above-described related description, the earphone 10 may include a pickup assembly 161, and the pickup assembly 161 may be configured to rotate relative to a housing such as the adapter housing 13 (and may specifically be the housing 135) or the cartridge housing 111 to adjust the position of the pickup assembly 161 relative to a physiological feature of a user such as the mouth in a worn state, which is advantageous for improving the pickup effect of the pickup assembly 161. Based on this, and in conjunction with fig. 58, the earphone 10 may include a damping member 163 disposed between the pickup assembly 161 and the housing, the damping member 163 for providing a damping feel during user adjustment of the position of the pickup assembly 161, and maintaining the relative position between the pickup assembly 161 and the housing after the user adjustment of the position of the pickup assembly 161 to a desired position.

Illustratively, in connection with fig. 58, one of the pivot connection block 1611 and the housing (e.g., the outer shell 135) forms a pivot hole, and the other forms a pivot extending into the pivot hole, i.e., the two are pivotally connected to facilitate rotation of the pickup assembly 161 relative to the housing. For example: the housing defines a pivot hole 1354 and the pivot connection block 1611 defines a pivot 16111 extending into the pivot hole 1354 toward one side of the housing. Based on this, the damper 163 may be located in a region where the pivot connection block 1611 overlaps the aforementioned housing in the axial direction of the pivot hole 1354, the damper 163 being connected to one of the pivot connection block 1611 and the aforementioned housing, and abutting the other of the pivot connection block 1611 and the aforementioned housing to provide resistance during rotation of the pickup assembly 161 relative to the aforementioned housing. For example: the damping member 163 is disposed in the accommodating groove of the housing and protrudes from the accommodating groove to be in contact with the pivot connection block 1611. In other words, the damper 163 may be located on the end surface of the aforementioned housing facing the pivot connection block 1611 in the axial direction of the pivot hole 1354. In addition, the damper 163 may be located on the side of the housing facing the pivot 16111 in the circumferential direction of the pivot hole 1354.

In some embodiments, the damper 163 may be curved as viewed along the axis of the pivot hole 1354, and may be disposed concentric with the pivot hole 1354 to allow the pickup assembly 161 to rotate more smoothly.

In some embodiments, the number of damping members 163 may be plural, and the plurality of damping members 163 may be spaced around the pivot hole 1354 so that the resistance provided by the damping members 163 is more uniform and the pickup assembly 161 rotates more smoothly.

Based on the above description, the pickup assembly 161 is provided with the pickup 1613 at an end thereof, such that the pickup 1613 needs to be electrically connected to a circuit board such as the main board 15 through the wires 164, for example, the wires 164 extend through the inside of the pivot connection block 1611 and the connection rod 1612 to be electrically connected to the pickup 1613, so as to avoid the wires 164 from being exposed. In addition, since the pickup assembly 161 needs to be rotated, the wire 164 runs a risk of being worn out to some extent.

As an example, in connection with fig. 58 to 60, the earphone 10 includes a partition 165 fixed in a housing such as the adapter housing 13 (in particular, the case 135) or the deck housing 111, the partition 165 keeping a space between the pivot connection block 1611 (in particular, the pivot 16111) and the wire 164 to prevent the wire 164 from being worn during rotation of the pickup assembly 161, thereby increasing reliability of the wire 164. For example: the diaphragm 165 covers a portion of the pivot connection block 1611 (which may be specifically the pivot 16111) in the circumferential direction of the pivot hole 1354 and extends partially into the pivot hole 1354 to better space the wire 164 from the pivot 16111.

Further, the pivot connection block 1611 may be configured to be stopped by the diaphragm 165 after the pickup assembly 161 is rotated at an angle with respect to the housing. Wherein the aforementioned angle may be between 90 ° and 180 °. For example: referring to fig. 12-17, one of the initial and final positions of pickup assembly 161 may be with connecting rod 1612 generally parallel to head assembly 12 and the other may be with pickup 1613 directed toward the user's mouth.

In some embodiments, the pivot connection block 1611 may include a pivot shaft 16111 positioned within the pivot hole 1354, and a barb portion 16112 and an operating portion 16113 connected to both ends of the pivot shaft 16111, respectively, the barb portion 16112 and the operating portion 16113 being positioned on opposite sides of the housing to lock the pivot connection block 1611 and the housing in an axial direction of the pivot hole 1354. Accordingly, the connection rod 1612 is connected to the operation portion 16113.

In some embodiments, the diaphragm 165 may include a fixed portion 1651 coupled to the housing and an arcuate extension 1652 coupled to the fixed portion 1651, the fixed portion 1651 may cover a portion of the barb portion 16112 and be spaced from the barb portion 16112 in the axial direction of the pivot hole 1354, and the arcuate extension 1652 may extend into the pivot 16111 and be spaced from the pivot 16111 in the radial direction of the pivot hole 1354 to allow the pivot connection block 1611 to rotate relative to the housing and the diaphragm 165 coupled thereto. At this time, the wire 164 may ride over the arcuate extension 1652 and the securing portion 1651 as it passes through the pivot hole 1354, thereby isolating the wire 164 from the pivot connection block 1611. Accordingly, the barb 16112 may be stopped by the securing portion 1651 after the pickup assembly 161 is rotated through an angle relative to the housing.

Further, the earphone 10 may include a circuit board 166 fixed in the housing, the pickup 1613 may be electrically connected to the circuit board 166 through a wire 164, for example, an end of the wire 164 away from the pickup 1613 is soldered to the circuit board 166, and the circuit board 166 and the main board 15 may be fastened by a board-to-board connection. The housing (e.g., the casing 135) may be provided with a heat stake 1355, and the fixing portion 1651 and the circuit board 166 are sleeved on the heat stake 1355, which is simple and reliable.

It should be noted that: the side of the pivot connection block 1611 facing away from the housing is provided with a recess area, that is, the recess area is disposed on the operation portion 16113, and the earphone 10 may further include a switch assembly 162 disposed in the recess area, which will not be described herein. Further, when the earphone 10 includes the switch assembly 162, since the switch assembly 162 and the pickup assembly 161 are disposed together to form the microphone assembly 16, the microphone assembly 16 may include other electronic components, so that the wires 164 may also be used to electrically connect the switch assembly 162 and other electronic components with the main board 15, and may be separated by the partition 165, which is not described herein.

Referring to fig. 23, 32 and 33, the earphone 10 may further include a functional module 17 connected to the housing, and the user may control the earphone 10 through the functional module 17. When the earphone 10 is not provided with the adapter housing 13, the housing may be the movement housing 111; when the earphone 10 is provided with the adapter housing 13, the housing may be the deck housing 111 or the adapter housing 13. In this embodiment, the housing 135 is taken as an example, and the functional component 17 may be installed in a groove area of the housing 135.

As an example, the functional module 17 may include a first circuit board 171, a second circuit board 172, an encoder 173, tact switches 174, and functional keys 175, the first circuit board 171 and the second circuit board 172 being stacked and coupled to the main board 15, respectively, the encoder 173 being disposed on the first circuit board 171, the tact switches 174 being disposed on the second circuit board 172 and being located on a side of the second circuit board 172 facing the first circuit board 171, the functional keys 175 may include a key cap 1751 and a key lever 1752 connected to the key cap 1751, the key cap 1751 being located on a side of the first circuit board 171 facing away from the second circuit board 172, a free end of the key lever 1752 facing away from the key cap 1751 being disposed opposite the tact switches 174, and the encoder 173 being sleeved on the key lever 1752. Wherein, when the user rotates the key rod 1752 through the key cap 1751, the key rod 1752 drives the encoder 173 to generate a first input signal; and when the user presses the key lever 1752 through the key cap 1751, the key lever 1752 triggers the tact switch 174 to generate a second input signal. Thus, the user can rotate and press two operations through one function key, and further two controls are performed on the earphone 10, so that the functions of the earphone 10 can be expanded, and the structure of the earphone 10 can be simplified. Further, the first input signal is used to control the volume up/down of the earphone 10; and/or the second input signal is used to control any one of play/pause, cut song, pairing device, power on/off of the earphone 10.

Referring to fig. 33, a housing (e.g., a case 135) may include a first cylinder 1351, and a first circuit board 171 and a second circuit board 172 are stacked in the first cylinder 1351 along an axial direction of the first cylinder 1351 (parallel to a pressing direction preset by the function keys 175). Wherein a side of the key cap 1751 facing away from the key rod 1752 may be (approximately) flush with the first barrel 1351. Further, the functional component 17 may further include an adapter ring 176 sleeved on the periphery of the first cylinder 1351, where the adapter ring 176 is limited along the axial direction of the first cylinder 1351 and can rotate around the axial direction of the first cylinder 1351. At this time, the key cap 1751 may be fixedly disposed on the adapter ring 176, and the key rod 1752 may be inserted into the first cylinder 1351 in the axial direction of the first cylinder 1351, so that both rotation and pressing operations of the function keys 175 are facilitated.

It should be noted that: the bottom of the first cylinder 1351 may be provided with a plurality of spacing posts spaced along the rotation direction of the function key 175 (i.e., the pressing direction around the function key 175), and the first circuit board 171 and the second circuit board 172 are sequentially sleeved on the spacing posts at intervals, so as to prevent the user from further driving the first circuit board 171 to rotate when the user rotates the key rod 1752 through the key cap 1751 and drives the encoder 173 to rotate, i.e., keep the first circuit board 171 relatively stationary in the rotation direction of the function key 175. Further, the spacing post may include a first spacing section and a second spacing section integrally connected, the first spacing section is farther from the bottom of the first cylinder 1351 than the second spacing section, and the radial dimension of the first spacing section is smaller than the radial dimension of the second spacing section, so that a bearing surface is formed on the spacing post, on which the first circuit board 171 is supported, so as to avoid that the user drives the first circuit board 171 to move towards the second circuit board 172 when pressing the key rod 1752 through the key cap 1751, that is, keep the first circuit board 171 relatively stationary in the pressing direction of the function key 175, and further maintain the spacing between the first circuit board 171 and the second circuit board 172 in the pressing direction of the function key 175.

Further, the first cylinder 1351 is provided with a first buckle 1352 on its outer peripheral wall, the adapter ring 176 may include a second cylinder 1761, the second cylinder 1761 is provided with a second buckle 1762 on its inner peripheral wall, and the first buckle 1352 and the second buckle 1762 are clamped to each other, so as to limit the movement of the adapter ring 176 along the opposite direction of the key rod 1752 relative to the insertion direction of the first cylinder 1351, and further avoid the drop of the adapter ring 176 from the first cylinder 1351, and increase the reliability of the earphone 10.

It should be noted that: the first barrel 1351 and the first clasp 1352 thereon are discontinuous in the circumferential direction of the first barrel 1351, as shown in fig. 32 and 33 with one portion of the first barrel 1351 being hatched and the other portion and the first clasp 1352 attached thereto being free of hatching, such that when the adaptor ring 176 is clasped with the housing 135, the first clasp 1352 gathers towards the center of the first barrel 1351 to allow the second clasp 1762 and the first clasp 1352 to pass over each other and clasp.

Further, a first flange 1353 may be further disposed on the outer peripheral wall of the first barrel 1351, and a second flange 1763 may be further disposed on the outer peripheral wall of the second barrel 1761, where the first flange 1353 is used to support the second flange 1763, so as to limit the movement of the adapter ring 176 along the insertion direction of the key rod 1752 relative to the first barrel 1351, that is, control the stroke of the user pressing the key rod 1752 through the key cap 1751, thereby avoiding the key rod 1752 from crushing the tact switch 174, and increasing the reliability of the earphone 10.

Further, the key cap 1751 may include a third cylinder 1753 and an end plate 1754 connected to the third cylinder 1753. Wherein, the third barrel 1753 may be sleeved on the periphery of the second barrel 1761, and one end of the third barrel 1753 is supported on one side of the second flange 1763 away from the first flange 1353, so as to increase the reliability of connection between the key cap 1751 and the adapter ring 176. At this time, an end plate 1754 is provided at the other end of the third cylinder 1753, and a key rod 1752 is provided on the end plate 1754.

Based on the equivalent model of the earphone 10, in connection with fig. 36, the vibration equation of the earphone 10 can be expressed as:

wherein m is _d Indicating the mass, m, of the movement case 111 ₀₂ M representing the sum of the masses of the coil 1123 and the support 1121 ₀ Mass m with vibration panel 114 ₂ Sum, m ₁ Representing the mass of the magnetic circuit system (e.g., including a magnetically permeable cover 1124 and a magnet 1125 attached to the bottom of the magnetically permeable cover 1124); r is (r) ₅ Representing damping of the support assembly, r _d Represents the damping of the first vibration-transmitting sheet 113, r ₁ Represents the damping of the second vibration transfer plate 1122; k (k) ₅ Representing the stiffness, k, of a support assembly (e.g., head rail assembly 12) _d Represents the rigidity, k, of the first vibration-transmitting sheet 113 ₁ Represents the stiffness of the second vibration-transmitting sheet 1122; x is x _d Indicating the displacement of the movement case 111, x ₀₂ Representing the displacement, x, of the coil 1123, the support 1121, and the vibration panel 114 as a whole ₁ Representing the displacement of the magnetic circuit system; f represents the driving force generated by the transducer 112.

Further, based on the above vibration equation, a frequency response curve of the earphone 10 may be obtained, so as to design, optimize relevant structural parameters in the earphone 10, and the like, to improve the acoustic performance of the earphone 10. Of course, for an actual product, the vibration displacement (i.e., the amplitude) of the vibration panel 114 may be measured based on the laser triangulation method in the non-wearing state, and the vibration displacement of the vibration panel 114 may be converted into the acceleration of the vibration panel 114, and further converted into the vibration magnitude of the vibration panel 114, so as to obtain a frequency response curve (for example, as shown in fig. 37) of the vibration panel 114. Accordingly, the frequency response curve of the vibration panel 114 may be used to characterize the varying relationship between the magnitude and frequency of the vibration panel 114. In the embodiments shown in fig. 37 to 41, the horizontal axis of the frequency response curve may represent frequency in Hz; the vertical axis may represent the magnitude of vibration of the vibration panel 114 in dB. Further, for a certain frequency response curve, the peak resonance frequency and peak resonance intensity corresponding to the resonance peak or resonance valley on the frequency response curve may affect the acoustic performance of the earphone 10 to a certain extent. For audio signals such as speech, the frequency response curve will generally tend to be flatter in the frequency band range of 300Hz to 3.4 kHz; whereas for audio signals such as music, it is generally preferred that the frequency response curve be flat in the frequency range of 20Hz to 20kHz so that the earphone 10 has good acoustic performance.

It should be noted that: the non-wearing state according to the present application may be defined as the earphone 10 not being worn by the user, for example, the earphone 10 not being worn to the head of the user; the support assembly is fixed, for example, the head beam assembly 12 is fixed on a fixed stage of the laser vibrometer, and the deck module 11 is in a cantilever state with respect to the fixed point of the support assembly. At this time, the vibration panel 114 is not in contact with other medium (e.g., the skin of the user) except for structural connection or contact with the deck module 11 itself. In the non-wearing state, the present application can measure the vibration displacement of the vibration panel 114 based on the laser triangulation method, so as to obtain the frequency response curve of the vibration panel 114. As an example, the laser vibrometer may emit a first laser signal to a test point, such as a centroid, geometric center, on the vibration panel 114, which may include a swept frequency signal in the range of 20-20000Hz generated by the distortion analyzer, which may be focused at a first angle (e.g., 90 °) to the aforementioned test point; the laser vibrometer may image the laser spot formed on the aforementioned test spot at a second angle, i.e. a second laser signal formed after reflection or scattering of the first laser signal by the vibration panel 114 may be collected by a laser receiver such as a CCD. Compared with the natural state without vibration, the relative position of the test point in the vibration process of the vibration panel 114 changes, that is, the relative position of the laser spot changes, so that the second angle changes, the imaging position of the laser spot on the laser receiver changes, and the vibration displacement of the vibration panel 114 at different moments is calculated, so as to obtain the frequency response curve of the vibration panel 114.

Referring to fig. 36 and 1, the vibration panel 114 may vibrate under the driving of the transducer 112 to transmit mechanical vibration generated by the transducer 112 to a user in a wearing state. Referring to fig. 37, in the non-wearing state, the frequency response curve of the vibration panel 114 may have at least one resonance peak, for example, two resonance peaks, which are collectively generated by the first vibration transmitting sheet 113 and the second vibration transmitting sheet 1122. At this time, for convenience of description, the two resonance peaks may be further defined as a first resonance peak P1 and a second resonance peak P2, and the peak resonance frequency of the second resonance peak P2 is greater than the peak resonance frequency of the first resonance peak P1. Of course, in other embodiments, by adjusting the mass, rigidity, etc. of each structure in the deck module 11, the frequency response curve may have only one resonance peak generated by the first vibration-transmitting sheet 113 and the second vibration-transmitting sheet 1122.

Further, at a certain frequency, the deck housing 111 resonates with the first vibration transmitting plate 113, so that large-amplitude vibration of the deck housing 111 occurs, resulting in little vibration of the vibration panel 114. Referring to fig. 37, in the non-wearing state, a resonance valley V0 (which may be referred to as a "mid-frequency valley") generated by the first vibration transmitting sheet 113 occurs in a frequency band range of 200Hz to 1kHz, for example, the mid-frequency valley occurs around 300 Hz. At this time, the vibration panel 114 hardly vibrates at a frequency corresponding to the mid-frequency valley (may be referred to as "mid-frequency deficiency"), which is fatal to the acoustic expressive force of the earphone 10, for example, the user cannot effectively hear the sound. Because, for audio signals such as speech, mid-frequency loss affects call quality to some extent; for audio signals such as music, the intermediate frequency loss also affects the playing quality to some extent. Accordingly, an inventive objective of the present application may be to improve the intermediate frequency loss of the earphone 10. To this end, the inventive concept of the present application may include two as follows: first, shift the intermediate frequency valley to a frequency band of lower or higher frequency so as not to be within a specific frequency band range, for example, the intermediate frequency valley of an audio signal such as voice is not within a frequency band range of 300Hz to 3.4 kHz; secondly, the intermediate frequency valley is weakened, for example, the amplitude (i.e., peak resonance intensity) corresponding to the intermediate frequency valley is reduced, and for example, the half-width corresponding to the intermediate frequency valley is reduced.

The inventor of the present application found in long-term research and development work that: based on the above vibration equation, the peak resonance frequency of the first resonance peak P1 is strongly correlated with the rigidity of the second vibration transmitting piece 1122, the peak resonance frequency of the second resonance peak P2 is strongly correlated with the rigidity of the first vibration transmitting piece 113, and the peak resonance frequency of the resonance valley V0 is strongly correlated with the rigidity of the first vibration transmitting piece 113 and the mass of the deck case 111. Wherein, the strong correlation of the present application may refer to that when the stiffness of the first vibration-transmitting sheet 113 is changed, for example, if the first vibration-transmitting sheet 113 is connected to the transducer 112 and the movement case 111, the local structure of the first vibration-transmitting sheet 113 is destroyed or broken, and the peak resonance frequency of the second resonance peak P2 and the resonance valley V0 is obviously increased or decreased; when the rigidity of the second vibration-transmitting sheet 1122 is changed, for example, if the connection of the magnetic circuit system and the bracket 1121 to the second vibration-transmitting sheet 1122 is satisfied, the local structure of the second vibration-transmitting sheet 1122 itself is broken or interrupted, and the peak resonance frequency of the first resonance peak P1 is significantly increased or decreased; when the mass of the deck case 111 is changed, for example, glue is applied and cured on the deck case 111, the peak resonance frequency of the resonance valley V0 becomes significantly larger or smaller. For example: when the stiffness of the first vibration transmitting sheet 113 is changed, the absolute value of the shift amount of the peak resonance frequency of the second resonance peak P2 is larger than the absolute value of the shift amount of the peak resonance frequency of the first resonance peak P1; when the stiffness of the second vibration transmitting sheet 1122 is changed, the absolute value of the shift amount of the peak resonance frequency of the first resonance peak P1 is larger than the absolute value of the shift amount of the peak resonance frequency of the second resonance peak P2. However, this does not mean that the peak resonance frequencies of the first resonance peak P1 and the second resonance peak P2 are related to only the rigidity of the second vibration transmitting piece 1122 and the first vibration transmitting piece 113, respectively, for example, the peak resonance frequency of the first resonance peak P1 is also related to parameters such as the rigidity of the first vibration transmitting piece 113, the mass of the magnetic circuit system, and the like, and for example, the peak resonance frequency of the second resonance peak P2 is also related to parameters such as the rigidity of the second vibration transmitting piece 1122, the mass of the magnetic circuit system, the mass of the movement case 111, and the like.

Referring to fig. 38, in the non-wearing state, the frequency response curves of the vibration panel 114 are greatly different in the rigidity of the different first vibration transmitting sheets 113. Wherein reference numerals K1-2, K1-1, k1_0, k1+1, and k1+2 denote the rigidity of the first vibration-transmitting sheet 113, respectively, and the values are sequentially increased. Further, as the stiffness of the first vibration-transmitting sheet 113 becomes gradually larger (for example, k1_0→k1+1→k1+2) as compared with the reference stiffness (for example, k1_0), the peak resonance frequency of the first resonance peak P1 is substantially unchanged, and the peak resonance frequency of the second resonance peak P2 and the resonance valley V0 becomes significantly larger, that is, the second resonance peak P2 and the resonance valley V0 are shifted toward the frequency band with higher frequency; while as the stiffness of the first vibration-transmitting sheet 113 becomes gradually smaller (for example, k1_0→k1-1→k1-2), the peak resonance frequency of the first resonance peak P1 becomes slightly smaller, and the peak resonance frequency of the second resonance peak P2 and resonance valley V0 becomes significantly smaller, that is, the second resonance peak P2 and resonance valley V0 are shifted toward a frequency band having a lower frequency. In short, the peak resonance frequency of the second resonance peak P2 and the resonance valley V0 significantly varies with the variation in the rigidity of the first vibration transmitting sheet 113, compared to the peak resonance frequency of the first resonance peak P1.

In addition, as the stiffness of the first vibration-transmitting sheet 113 becomes larger (e.g., k1_0→k1+1→k1+2) compared to the reference stiffness (e.g., k1_0), the peak resonance intensities of the first resonance peak P1, the second resonance peak P2 and the resonance valley V0 are substantially unchanged; while as the stiffness of the first vibration-transmitting sheet 113 becomes gradually smaller (for example, k1_0→k1-1→k1-2), the peak resonance intensity of the second resonance peak P2 and the resonance valley V0 becomes significantly smaller, and the peak resonance intensity of the first resonance peak P1 becomes significantly smaller after being substantially unchanged.

Referring to fig. 39, in the non-wearing state, the frequency response curve of the vibration panel 114 is greatly different in the rigidity of the second vibration transmitting sheet 1122. Wherein reference numerals K2-2, K2-1, k2_0, k2+1, and k2+2 denote the rigidity of the second vibration-transmitting sheet 1122, respectively, and the values sequentially increase. Further, as the stiffness of the second vibration-transmitting sheet 1122 becomes larger (e.g., k2_0→k2+1→k2+2) compared to the reference stiffness (e.g., k2_0), the peak resonance frequency of the resonance valley V0 is substantially unchanged, and the peak resonance frequencies of the first resonance peak P1 and the second resonance peak P2 become significantly larger, i.e., the first resonance peak P1 and the second resonance peak P2 are shifted toward the frequency band with higher frequency; as the stiffness of the second vibration-transmitting sheet 1122 becomes gradually smaller (for example, k2_0→k2-1→k2-2), the peak resonance frequency of the first resonance peak P1 becomes significantly smaller, that is, the first resonance peak P1 shifts to a frequency band with a lower frequency, and the peak resonance frequency of the second resonance peak P2 and the resonance valley V0 is substantially unchanged. In short, the peak resonance frequency of the first resonance peak P1 significantly varies with the variation of the stiffness of the second vibration-transmitting sheet 1122, and the peak resonance frequency of the second resonance peak P2 also varies with the variation of the stiffness of the second vibration-transmitting sheet 1122, but the variation is limited, compared with the peak resonance frequency of the resonance valley V0.

In addition, as the stiffness of the second vibration-transmitting sheet 1122 becomes larger (e.g., k2_0→k2+1→k2+2) compared to the reference stiffness (e.g., k2_0), the peak resonance intensity of the first resonance peak P1 is substantially unchanged and then significantly smaller, the peak resonance intensity of the second resonance peak P2 is slightly larger, and the peak resonance intensity of the resonance valley V0 is substantially unchanged; while the peak resonance intensities of the first resonance peak P1, the second resonance peak P2 and the resonance valley V0 are substantially unchanged as the rigidity of the second vibration transmitting sheet 1122 becomes gradually smaller (for example, k2_0→k2-1→k2-2).

Referring to fig. 40, in the non-wearing state, the frequency response curve of the vibration panel 114 is greatly different in the mass of the different deck cases 111. Wherein reference numerals M1-2, M1-1, m1_0, m1+1, and m1+2 denote the masses of the deck case 111, respectively, and the values sequentially increase. Further, as the mass of the deck 111 becomes larger (e.g., m1_0→m1+1→m1+2) compared to the reference mass (e.g., m1_0), the peak resonance frequency of the first resonance peak P1 and the second resonance peak P2 becomes slightly smaller, and the peak resonance frequency of the resonance valley V0 becomes significantly smaller, i.e., the resonance valley V0 shifts to a frequency band with a lower frequency; while as the mass of the deck 111 becomes smaller (e.g., m1_0→m1-1→m1-2), the peak resonance frequency of the first resonance peak P1 becomes slightly larger, and the peak resonance frequency of the second resonance peak P2 and the resonance valley V0 becomes significantly larger, i.e., the resonance valley V0 shifts toward a frequency band with a higher frequency. In short, the peak resonance frequency of the resonance valley V0 significantly changes with the change in mass of the cartridge case 111, compared to the peak resonance frequencies of the first resonance peak P1 and the second resonance peak P2.

In addition, as the mass of the deck case 111 becomes larger (e.g., m1_0→m1+1→m1+2) as compared with the reference mass (e.g., m1_0), the peak resonance intensity of the first resonance peak P1 becomes significantly smaller, the peak resonance intensity of the second resonance peak P2 becomes substantially unchanged, and the peak resonance intensity of the resonance valley V0 becomes significantly larger; and as the mass of the deck housing 111 becomes smaller (e.g., m1_0→m1-1→m1-2), the peak resonance intensity of the first resonance peak P1 is substantially unchanged, the peak resonance intensity of the second resonance peak P2 is substantially unchanged and then significantly smaller, and the peak resonance intensity of the resonance valley V0 is significantly smaller.

Further, referring to fig. 1 and 36, the first vibration transmitting sheet 113 needs to suspend the structures such as the transducer 112 and the vibration panel 114 in the cartridge case 111, and the second vibration transmitting sheet 1122 needs to suspend the structures such as the magnetic circuit system of the transducer 112 in the cartridge case 111. It is apparent that the total weight to be carried by the first vibration-transmitting sheet 113 is greater than the total weight to be carried by the second vibration-transmitting sheet 1122. Based on this, the stiffness of the first vibration-transmitting sheet 113 is generally greater than that of the second vibration-transmitting sheet 1122, so that the respective suspension requirements are satisfied. In other words, when the total weight to be carried is greater, the person skilled in the art tends to choose a stiffer vibration-transmitting sheet; while those skilled in the art will tend to choose less stiff vibration-transmitting sheets when the total weight to be carried is smaller. Unlike this, the following are: in the case of meeting the suspension requirement, the rigidity of the first vibration transmitting sheet 113 can be reduced, and the rigidity of the second vibration transmitting sheet 1122 can be increased, so as to adjust the peak resonance frequency and peak resonance intensity corresponding to the resonance peak or the resonance valley on the frequency response curve, and enable the frequency response curve to be as flat as possible in the audible frequency band range of human ears. As an example, the stiffness of the second vibration transmitting sheet 1122 may be greater than the stiffness of the first vibration transmitting sheet 113.

Referring to fig. 41, in the non-wearing state, the frequency response curve of the vibration panel 114 is greatly different between the rigidity of the first vibration transmitting piece 113 and the rigidity of the second vibration transmitting piece 1122. Wherein, compared with the reference stiffness (k1_0 & K2_0), as the stiffness of the first vibration transmitting sheet 113 and/or the stiffness of the second vibration transmitting sheet 1122 are continuously optimized, for example, the stiffness of the first vibration transmitting sheet 113 is gradually reduced and the stiffness of the second vibration transmitting sheet 1122 is gradually increased, the peak resonance frequency of the resonance valley V0 may be gradually reduced, that is, the resonance valley V0 may be shifted from a frequency band with a lower frequency, which is beneficial to improving the mid-frequency loss. Furthermore, the peak resonance intensity of the resonance valley V0 may also be gradually reduced, which is advantageous for eliminating the intermediate frequency valley, making the frequency response curve flatter, and for improving the acoustic performance of the earphone 10. Notably, are: the resonance peak generated by the first vibration-transmitting sheet 113 and the second vibration-transmitting sheet 1122 and the resonance valley generated by the first vibration-transmitting sheet 113 are arranged in a "peak-valley-peak" (i.e., P1-V0-P2) manner in most cases on the frequency response curves shown in fig. 37 to 40, and the peak resonance intensity of the resonance valley V0 is large; the frequency response curve shown in fig. 41 shows a "valley-peak" (i.e., V0-P1-P2) arrangement, and the peak resonance intensity of the resonance valley V0 is smaller. In other words, compared to changing one of the rigidity of the first vibration-transmitting sheet 113 and the rigidity of the second vibration-transmitting sheet 1122 alone, simultaneously reducing the rigidity of the first vibration-transmitting sheet 113 and increasing the rigidity of the second vibration-transmitting sheet 1122 not only makes shifting of the resonance valley V0 to a frequency band lower in frequency more efficient, but also contributes to weakening of the resonance valley V0.

In some embodiments, the mass of the deck housing 111 may be greater than or equal to 1g, and the stiffness of the first vibration-transmitting piece 113 may be less than or equal to 7000N/m to reduce the peak resonance frequency of the resonance valley V0, for example, the peak resonance frequency of the resonance valley V0 is less than or equal to 400Hz, so that the resonance valley V0 shifts toward a frequency band with a lower frequency, which is advantageous for improving mid-frequency loss. Preferably, the mass of the deck housing 111 may be greater than or equal to 1g, and the rigidity of the first vibration-transmitting sheet 113 may be less than or equal to 7000N/m; more preferably, the mass of the deck housing 111 may be greater than or equal to 1.2g, and the stiffness of the first vibration-transmitting sheet 113 may be less than or equal to 5000N/m to further reduce the peak resonance frequency of the resonance valley V0, for example, the peak resonance frequency of the resonance valley V0 is less than or equal to 200Hz, so that the resonance valley V0 is shifted more toward a frequency band with a lower frequency, which is advantageous for improving mid-frequency loss. In addition, the resonance valley V0 is shifted to a frequency band with a lower frequency, so that the vibration of the vibration panel 114 in the low frequency band is weakened, which is also beneficial to alleviating the itching feeling in the low frequency band.

Based on the above-described related description, increasing the mass of the deck housing 111 and decreasing the rigidity of the first vibration-transmitting piece 113 are both advantageous in decreasing the peak resonance frequency of the resonance valley V0, that is, in shifting the resonance valley V0 toward a frequency band having a lower frequency. Therefore, the ratio between the mass of the deck case 111 and the rigidity of the first vibration-transmitting sheet 113 can be greater than or equal to 0.15s ² The method comprises the steps of carrying out a first treatment on the surface of the Preferably, the ratio between the mass of the deck case 111 and the rigidity of the first vibration-transmitting sheet 113 may be greater than or equal to 0.2s ² . In this way, when one of the mass of the deck case 111 and the rigidity of the first vibration transmitting sheet 113 is determined, the other of the mass of the deck case 111 and the rigidity of the first vibration transmitting sheet 113 is determined or optimized, so that the peak resonance frequency of the resonance valley V0 is shifted toward a frequency band where the frequency is lower as much as possible, thereby improving mid-frequency loss.

Alternatively, in the non-wearing state, in addition to the resonance valley V0, the frequency response curve of the vibration panel 114 may have at least one resonance peak, such as the first resonance peak P1 and the second resonance peak P2, generated by the first vibration transmitting sheet 113 and the second vibration transmitting sheet 1122 together in the frequency band range of 200Hz to 2 kHz. The peak resonance frequency of the first resonance peak P1 may be between 200Hz and 400Hz, and the peak resonance frequency of the second resonance peak P2 is greater than the peak resonance frequency of the first resonance peak P1. In this way, the earphone 10 can obtain a higher sensitivity at least in the low-medium frequency range, that is, the volume of the low-medium frequency range is not too low, so as to improve the acoustic performance of the earphone 10. Of course, in other embodiments, the frequency response curve may have only one resonance peak, such as the second resonance peak P2, in the frequency band range of 200Hz to 2 kHz.

Alternatively, the stiffness of the second vibration transmitting sheet 1122 may be greater than or equal to 1000N/m to reduce the peak resonance intensity of the first resonance peak P1, thereby weakening the first resonance peak P1 so that the frequency response curve is flatter as a whole. At the same time, the peak resonance frequency of the first resonance peak P1 is slightly increased, that is, the first resonance peak P1 is slightly shifted toward the frequency band with higher frequency; the resonance valley V0 is shifted toward the frequency band with lower frequency, so that the peak resonance frequency of the first resonance peak P1 may be greater than the peak resonance frequency of the resonance valley V0. In this way, the earphone 10 can obtain a higher sensitivity at least in the mid-high frequency band, that is, the volume of the mid-high frequency band is not too low, so as to improve the acoustic performance of the earphone 10.

In some embodiments, the mass of the deck housing 111 may be less than or equal to 0.5g, and the stiffness of the first vibration-transmitting sheet 113 may be greater than or equal to 80000N/m to increase the peak resonance frequency of the resonance valley V0, for example, the peak resonance frequency of the resonance valley V0 is greater than or equal to 2kHz, so that the resonance valley V0 shifts toward a frequency band with a higher frequency, which is advantageous for improving mid-frequency loss. Preferably, the mass of the deck housing 111 may be less than or equal to 0.5g, and the stiffness of the first vibration-transmitting sheet 113 may be greater than or equal to 160000N/m to increase the peak resonance frequency of the resonance valley V0 more, for example, the peak resonance frequency of the resonance valley V0 is greater than or equal to 4kHz, so that the resonance valley V0 is shifted more toward a frequency band with a higher frequency, which is advantageous for improving mid-frequency loss.

Alternatively, in the non-wearing state, the frequency response curve of the vibration panel 114 may have at least one resonance peak, such as the first resonance peak P1 and the second resonance peak P2, which are generated in common by the first vibration transmitting sheet 113 and the second vibration transmitting sheet 1122, in addition to the resonance valley V0. Wherein, the peak resonance frequency of the first resonance peak P1 is smaller than the peak resonance frequency of the resonance valley V0, for example, the peak resonance frequency of the first resonance peak P1 is between 200Hz and 400 Hz; the peak resonance frequency of the second resonance peak P2 is greater than the peak resonance frequency of the resonance valley V0, for example, the peak resonance frequency of the second resonance peak P2 is greater than or equal to 4kHz. In this way, the earphone 10 can obtain a higher sensitivity at least in the low-medium frequency band, that is, the volume of the low-medium frequency band is not too low, and the frequency response curve is flatter as a whole, so as to improve the acoustic expressive force of the earphone 10.

In some embodiments, the deck module 11 may be configured such that the frequency response curve of vibration of the vibration panel 114 in the non-worn state has no effective resonance valley in the frequency range of 400Hz to 2kHz, so as to improve mid-frequency loss. The effective resonance valley is defined as two intersection points of a reference line segment parallel to a transverse axis of the frequency response curve and the frequency response curve, wherein the intensity corresponding to the reference line segment minus the peak resonance intensity of the effective resonance valley is equal to 6dB, and the difference between frequencies corresponding to two end points of the reference line segment is smaller than or equal to 4 octaves. For example: in the non-wearing state, the vibration displacement of the vibration panel 114 is obtained by means of laser triangulation, then a frequency response point (generally, the position of the dip on the frequency response curve) of a suspected effective resonance valley on the frequency response curve is selected, the peak resonance intensity of the frequency response point is read, the peak resonance intensity is subtracted by 6dB to obtain a reference point, a reference line parallel to the transverse axis of the frequency response curve is drawn through the reference point, if the reference line has two intersection points with the frequency response curve, whether the difference of the frequencies of the two intersection points is smaller than or equal to 4 octaves is further calculated and judged, and if the difference of the frequencies is smaller than or equal to 4 octaves, the frequency response point is the effective resonance valley defined by the application. Therefore, even if the frequency response curve has a locally small elevation (such as the resonance peak according to the present application) or depression (such as the resonance valley according to the present application) in a certain frequency band, the corresponding frequency response curve does not appear to be flat enough compared to the effective resonance valley, but as long as the locally small elevation or depression does not have a substantial adverse effect on the acoustic performance of the earphone 10, we still allow the existence of the resonance peak or the resonance valley to consider the cost of the movement module 11. In short, the resonant valley and the effective resonant valley according to the present application are two different criteria for evaluating the flatness of the frequency response curve, and the two criteria are mainly aimed at the position where the frequency response curve is concave, where the effective resonant valley is one of the resonant valleys, but the resonant valley does not necessarily satisfy the definition of the effective resonant valley according to the present application.

Based on the above-described related description, the peak resonance frequency of the effective resonance valley is related to the rigidity of the first vibration-transmitting piece 113 and the mass of the deck case 111, and the like. As an example, the mass of the deck case 111 and/or the rigidity of the first vibration transmitting plate 113 may be set such that the frequency response curve has no effective resonance valley in the frequency band range of 400Hz to 2kHz to improve mid-frequency loss. Wherein, the absence of an effective resonance valley in the frequency band range of 400Hz to 2kHz of the frequency response curve may mean that the sinking position such as the resonance valley on the frequency response curve does not meet the definition of the effective resonance valley of the application, or that the sinking position such as the resonance valley on the frequency response curve meets the definition of the effective resonance valley of the application but the peak resonance frequency is not in the frequency band range of 400Hz to 2 kHz.

Further, in the non-wearing state, in addition to the effective resonance valley, the frequency response curve of the vibration panel 114 may have at least one resonance peak generated by the first vibration transmitting sheet 113 and the second vibration transmitting sheet 1122 together in the frequency band range of 200Hz to 2kHz, so that the volume of the middle frequency band is not too low, which is advantageous for improving the acoustic expressive force of the earphone 10. In some embodiments, the mass of the deck housing 111 may be greater than or equal to 1g, the stiffness of the first vibration-transmitting sheet 113 may be less than or equal to 2500N/m, and the stiffness of the second vibration-transmitting sheet 1122 may be less than or equal to 100000N/m. In other embodiments, the mass of cartridge housing 111 may be less than or equal to 0.5g, the stiffness of first vibration-transmitting sheet 113 may be greater than or equal to 80000N/m, and the stiffness of second vibration-transmitting sheet 1122 may be between 1000N/m and 500000N/m.

Optionally, the mass of the deck housing 111 and/or the stiffness of the first vibration-transmitting plate 113 may be set such that the frequency response curve has no effective resonance valley in the frequency band range of 200Hz to 2kHz to improve mid-frequency loss in a wider frequency band range. Wherein, the absence of an effective resonance valley in the frequency band range of 200Hz to 2kHz of the frequency response curve may mean that the sinking position such as the resonance valley on the frequency response curve does not meet the definition of the effective resonance valley of the application, or that the sinking position such as the resonance valley on the frequency response curve meets the definition of the effective resonance valley of the application but the peak resonance frequency is not in the frequency band range of 200Hz to 2 kHz. In some embodiments, the mass of the deck housing 111 may be greater than or equal to 1g, and the stiffness of the first vibration-transmitting sheet 113 may be less than or equal to 2500N/m, so as to further reduce the peak resonance frequency of the effective resonance valley, for example, the peak resonance frequency of the effective resonance valley is less than or equal to 200Hz, so that the effective resonance valley is shifted more toward a frequency band with a lower frequency, which is advantageous for improving the mid-frequency loss. In other embodiments, the mass of the deck housing 111 may be less than or equal to 0.5g, and the stiffness of the first vibration-transmitting sheet 113 may be greater than or equal to 80000N/m, so as to increase the peak resonance frequency of the effective resonance valley, for example, the peak resonance frequency of the effective resonance valley is greater than or equal to 2kHz, so that the effective resonance valley shifts toward a frequency band with a higher frequency, which is beneficial to improving the mid-frequency loss.

Further, the mass of the deck case 111 and/or the rigidity of the first vibration transmitting plate 113 may be set such that the frequency response curve has no effective resonance valley in the frequency band range of 200Hz to 4kHz to improve mid-frequency loss in a wider frequency band range. Wherein, the absence of an effective resonance valley in the frequency range of 200Hz to 4kHz of the frequency response curve may mean that the sinking position such as the resonance valley on the frequency response curve does not meet the definition of the effective resonance valley of the application, or that the sinking position such as the resonance valley on the frequency response curve meets the definition of the effective resonance valley of the application but the peak resonance frequency is not in the frequency range of 200Hz to 4 kHz. In some embodiments, the mass of the deck housing 111 may be greater than or equal to 1g, and the stiffness of the first vibration-transmitting sheet 113 may be less than or equal to 2500N/m, so as to further reduce the peak resonance frequency of the effective resonance valley, for example, the peak resonance frequency of the effective resonance valley is less than or equal to 200Hz, so that the effective resonance valley is shifted more toward a frequency band with a lower frequency, which is advantageous for improving the mid-frequency loss. In other embodiments, the mass of the deck housing 111 may be less than or equal to 0.5g, and the stiffness of the first vibration-transmitting sheet 113 may be greater than or equal to 160000N/m, so as to increase the peak resonance frequency of the effective resonance valley, for example, the peak resonance frequency of the effective resonance valley is greater than or equal to 4kHz, so that the effective resonance valley shifts toward a frequency band with a higher frequency, which is advantageous for improving mid-frequency loss.

Optionally, the mass of the deck housing 111 and/or the stiffness of the first vibration-transmitting sheet 113 may be set such that the frequency response curve has an effective resonance valley in the frequency range of 200Hz to 400Hz, which is advantageous for avoiding the occurrence of an effective resonance valley in the mid-frequency band, thereby improving mid-frequency loss. As an example, the mass of the deck housing 111 may be greater than or equal to 1g, and the stiffness of the first vibration-transmitting sheet 113 may be less than or equal to 7000N/m to reduce the peak resonance frequency of the effective resonance valley, for example, the peak resonance frequency of the effective resonance valley is less than or equal to 400Hz, so that the effective resonance valley is shifted toward a frequency band with a lower frequency, which is advantageous for improving mid-frequency loss. In addition, the effective resonance valley shifts to a frequency band with lower frequency, so that the vibration of the vibration plate in the low frequency band is weakened, and the itching feeling of the low frequency band is relieved. Further, in the non-wearing state, in addition to the effective resonance valley, the frequency response curve of the vibration panel 114 may have two resonance peaks generated by the first vibration transmitting sheet 113 and the second vibration transmitting sheet 1122 together in the frequency band range of 400Hz to 2kHz, that is, the peak resonance frequencies of the two resonance peaks may be respectively greater than the peak resonance frequency of the effective resonance valley. As an example, the stiffness of the second vibration transmitting sheet 1122 may be greater than or equal to 1000N/m to reduce the peak resonance intensity of the first resonance peak, thereby weakening the first resonance peak so that the frequency response curve is flatter as a whole. At the same time, the peak resonance frequency of the first resonance peak is slightly increased, namely the first resonance peak is slightly shifted to a frequency band with higher frequency; the effective resonance valley is shifted toward the frequency band with lower frequency, so that the peak resonance frequency of the first resonance peak can be greater than the peak resonance intensity of the effective resonance valley. In this way, the earphone 10 can obtain a higher sensitivity at least in the low-medium frequency range, that is, the volume of the low-medium frequency range is not too low, so as to improve the acoustic performance of the earphone 10.

Optionally, the mass of the deck housing 111 and/or the stiffness of the first vibration-transmitting sheet 113 may be set such that the frequency response curve has an effective resonance valley in the frequency range of 2kHz to 20kHz, which is advantageous in avoiding the occurrence of an effective resonance valley in the mid-frequency band, thereby improving mid-frequency loss. As an example, the mass of the deck housing 111 may be less than or equal to 0.5g, and the stiffness of the first vibration-transmitting sheet 113 may be greater than or equal to 80000N/m to increase the peak resonance frequency of the effective resonance valley, for example, the peak resonance frequency of the effective resonance valley is greater than or equal to 2kHz, so that the effective resonance valley is shifted toward a frequency band with a higher frequency, which is advantageous for improving mid-frequency loss.

In some embodiments, in the non-wearing state, the frequency response curve of the vibration panel 114 may have a first resonance peak and a second resonance peak generated by the first vibration transmitting sheet 113 and the second vibration transmitting sheet 1122 together, the peak resonance frequency of the first resonance peak being smaller than the peak resonance frequency of the second resonance peak, and there being no effective resonance valley between the first resonance peak and the second resonance peak. Therefore, the method is not only beneficial to increasing the flatness of the frequency response curve between two resonance peaks, but also beneficial to avoiding the problem that a certain frequency point or frequency band of the frequency response curve is missing between the two resonance peaks. The absence of an effective resonance valley between the first resonance peak and the second resonance peak may mean that a dip position such as the resonance valley on the frequency response curve does not satisfy the definition of the effective resonance valley according to the present application, or that a dip position such as the resonance valley on the frequency response curve satisfies the definition of the effective resonance valley according to the present application but the peak resonance frequency thereof is not between the first resonance peak and the second resonance peak. Further, the peak resonance frequency of the first resonance peak may be between 80Hz and 400Hz, and the peak resonance frequency of the second resonance peak may be between 100Hz and 2 kHz. Preferably, the peak resonance frequency of the first resonance peak may be between 200Hz and 400Hz, and the peak resonance frequency of the second resonance peak may be between 400Hz and 2 kHz.

Based on the above-described related description, the mass of the deck case 111 may be greater than or equal to 1g, the rigidity of the first vibration-transmitting piece 113 may be less than or equal to 7000N/m, and the rigidity of the second vibration-transmitting piece 1122 may be greater than or equal to 1000N/m. Preferably, the mass of the deck housing 111 may be greater than or equal to 1.2g, the stiffness of the first vibration-transmitting sheet 113 may be less than or equal to 5000N/m, and the stiffness of the second vibration-transmitting sheet 1122 may be greater than or equal to 3000N/m.

In some embodiments, in the non-wearing state, the frequency response curve of the vibration panel 114 may have a resonance valley V0 generated by the first vibration transmitting sheet 113, and a first resonance peak P1 and a second resonance peak P2 generated by the first vibration transmitting sheet 113 and the second vibration transmitting sheet 1122 together, where the peak resonance frequency of the resonance valley V0 is smaller than the peak resonance frequency of the first resonance peak P1, and the peak resonance frequency of the first resonance peak P1 is smaller than the peak resonance frequency of the second resonance peak P2. Therefore, the method is not only beneficial to avoiding the problem that a certain frequency point or a frequency band of the frequency response curve is missing between two resonance peaks, but also beneficial to increasing the flatness of the frequency response curve between the two resonance peaks. In some embodiments, the peak resonant frequency of the resonant valley V0 may be greater than or equal to 400Hz. As an example, the mass of the deck case 111 may be less than or equal to 1g, the rigidity of the first vibration-transmitting sheet 113 may be more than or equal to 7000N/m, and the rigidity of the second vibration-transmitting sheet 1122 may be more than or equal to 1000N/m. In other embodiments, the peak resonant frequency of the second resonant peak P2 may be less than or equal to 1kHz. As an example, the mass of the deck housing 111 may be less than or equal to 1g, the rigidity of the first vibration-transmitting sheet 113 may be more than or equal to 7000N/m, and the rigidity of the second vibration-transmitting sheet 1122 may be between 20000N/m and 50000N/m.

In some embodiments, in conjunction with fig. 37, in the non-wearing state, the frequency response curve of the vibration panel 114 may further have a resonance peak strongly related to the rigidity of the support 1121, and the resonance peak may be defined as a third resonance peak P3. The rigidity of the support 1121 may be greater than or equal to 100000N/m, so that the peak resonance frequency of the third resonance peak P3 is greater than or equal to 4kHz, and thus the middle-high frequency band and above of the frequency response curve is as flat as possible, which is beneficial to improving the acoustic performance of the earphone 10. In some embodiments, the material of the support 1121 may be any one of polymer materials such as polycarbonate, nylon, plastic titanium, etc., so that the support 1121 has sufficient rigidity, and the third resonance peak P3 is shifted to a frequency band with a higher frequency as much as possible. In other embodiments, the support 1121 may include a substrate made of any one of high polymer materials such as polycarbonate, nylon, plastic titanium, etc., and a reinforcement made of glass fiber or carbon fiber doped in the substrate, or an aluminum alloy or stainless steel molded on the substrate by a beer sleeving process to further increase the rigidity of the support 1121, so that the third resonance peak P3 is as far as possible The higher frequency band shifts. Further, the ratio between the average thickness of the support 1121 and the area of the support 1121 may be greater than or equal to 0.01mm ^-1 To increase the stiffness of the support 1121 so that the third resonance peak P3 is shifted toward the frequency band of higher frequency as much as possible. Wherein the area of the support 1121 may be defined as the area of the orthographic projection of the support 1121 in the vibration direction of the transducer 112, and the average thickness of the support 1121 may be defined as the volume of the support 1121 divided by the area of the support 1121; and the area and volume of the support 1121 can be measured.

It should be noted that: the stiffness of the first vibration-transmitting sheet 113 according to the present application can be measured as follows: the method comprises the steps of fixing the edge of a first vibration transmission sheet 113 on a fixed table of a tester such as a gram force meter, aligning a probe of the gram force meter with a test point such as a mass center and a geometric center on the first vibration transmission sheet 113, inputting a plurality of displacement values on a control panel of the gram force meter, recording the corresponding relation between parameters such as stress and displacement of the probe, drawing a displacement-stress curve (the transverse axis and the longitudinal axis of the curve respectively represent displacement and force), and finally calculating the slope of an inclined straight line segment in the curve to obtain the rigidity of the first vibration transmission sheet 113. Wherein each displacement may represent a distance of movement of the probe, the movement of the probe may cause the first vibration-transmitting sheet 113 to generate a deformation amount, and the deformation amount of the first vibration-transmitting sheet 113 caused by each displacement may not exceed a maximum deformation amount of the first vibration-transmitting sheet 113. Further, since the deformation of the first vibration-transmitting plate 113 lags behind the movement of the probe, the displacement-force curve has a curve section almost parallel to the transverse axis, and the curve section parallel to the transverse axis may not be considered in calculating the rigidity of the first vibration-transmitting plate 113. It is apparent that the rigidity of the second vibration-transmitting sheet 1122, the bracket 1121, and the like may also be measured in the same or similar manner, and will not be described herein.

The foregoing description is only a partial embodiment of the present application, and is not intended to limit the scope of the present application, and all equivalent devices or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.

Claims

1. The earphone is characterized by comprising a support component and a core module connected with the support component, wherein the support component is used for supporting the core module to be worn to a wearing position, the core module comprises a core shell, a transduction device and a vibration panel, the transduction device is arranged in a containing cavity of the core shell, the vibration panel is connected with the transduction device and is used for transmitting mechanical vibration generated by the transduction device to a user, in a wearing state, the vibration panel faces the center of one side of the wearing position in the direction of a human sagittal axis, and the vibration panel faces the external auditory meatus of the user, which is closer to the center of one side of the wearing position, than the core shell faces the center of the other side of the wearing position.

2. The earphone according to claim 1, wherein the center of the vibration panel orthographic projected to the deck housing in the vibration direction of the transducer device coincides with the center of the transducer device orthographic projected to the deck housing in the vibration direction, and the center of the transducer device orthographic projected to the deck housing in the vibration direction does not coincide with the center of the deck housing on the side toward the transducer device in the vibration direction.

3. The earphone according to claim 1, wherein the center of the transducer means orthographic projected to the deck housing in the vibration direction of the transducer means coincides with the center of the deck housing on the side toward the transducer means in the vibration direction, and the center of the vibration panel orthographic projected to the deck housing in the vibration direction does not coincide with the center of the transducer means orthographic projected to the deck housing in the vibration direction.

4. The earphone of claim 1, further comprising a switch housing connecting the cartridge housing and the support assembly, the switch housing including a cylindrical sidewall at a periphery of the cartridge housing, orthographic projections of the cartridge housing and the cylindrical sidewall on a reference plane perpendicular to a vibration direction of the transducer device having a first center and a second center, respectively, the first center being closer to an external auditory canal of a user's ear than the second center in a worn state.

5. The headset of claim 4, wherein the cartridge housing rotates about a first axis relative to the adapter housing, the first center and the second center being spaced apart along a direction in which the first axis is located.

6. The earphone of claim 5, wherein the first center and the second center are on the first axis.

7. The earphone of claim 5, wherein the adapter housing rotates relative to the support assembly about a second axis that intersects the first axis.

8. The earphone of claim 4, further comprising a battery and a motherboard coupled to the transducer, wherein the adapter housing further comprises a middle plate connected to the inside of the cylindrical side wall and a housing snapped to the cylindrical side wall, wherein the battery or the motherboard is disposed between the housing and the middle plate, and wherein the cartridge housing is located on a side of the middle plate facing away from the housing.

9. The headset of claim 1, wherein the support assembly is configured as a head rest assembly for bypassing the top of the user's head and bringing the vibration panel into contact with the user's cheek, the head rest assembly forming a first contact point with the top of the user's head in the worn state, the vibration panel forming a second contact point with the user's cheek, the second contact point being spaced from the first contact point by a distance of between 20mm and 30mm in a direction of the sagittal axis of the human body.

10. The earphone of claim 9, wherein the head beam assembly comprises an arcuate head beam member for bypassing the head of a user and an adapter comprising a first connection section, an intermediate transition section and a second connection section, the intermediate transition section connecting the first connection section and the second connection section, the first connection section and the second connection section being bent and extending in opposite directions relative to the intermediate transition section, respectively, the first connection section being connected to the arcuate head beam member and the second connection section being connected to the adapter housing; the middle transition section is inclined relative to the vertical axis of the human body when being observed along the direction of the coronal axis of the human body.