CN219018998U

CN219018998U - Earphone

Info

Publication number: CN219018998U
Application number: CN202320019157.3U
Authority: CN
Inventors: 王永根; 徐江
Original assignee: Shenzhen Voxtech Co Ltd
Current assignee: Shenzhen Voxtech Co Ltd
Priority date: 2020-07-29
Filing date: 2021-07-29
Publication date: 2023-05-12
Anticipated expiration: 2031-07-29
Also published as: CN114286221A; CN114286225A; CN218830539U; CN218830541U; CN217159945U; CN220123038U; CN220156629U; CN217159954U; CN220087445U; CN217159952U; CN217159961U; CN217159948U; CN114286233A; CN217159960U; CN217159955U; CN220123039U; CN217159944U; CN114286223A; CN219437126U; CN114286222A

Abstract

The application mainly relates to an earphone, which comprises a hook-shaped part, a connecting part and a holding part, wherein the connecting part is connected with the hook-shaped part and the holding part, the hook-shaped part is used for being hung between the rear side of an ear of a user and the head in a wearing state, and the holding part is used for contacting the front side of the ear so as to allow the holding part to be matched with the hook-shaped part to clamp the ear; the side of the holding part facing the ear part comprises a first area and a second area, the second area is farther away from the connecting part than the first area, and the second area protrudes towards the ear part than the first area.

Description

Earphone

The present application is a divisional application of China patent application with the name of earphone and shell assembly, which is filed by China patent office, application number 2021217551280 and is published on 29 days of 2021, 07.

The parent application claims priority from the chinese patent office, application number 2020107433964, entitled "a headset," filed 29 in year 2020, the entire contents of which are incorporated herein by reference.

Technical Field

The application relates to the technical field of sounding instruments, 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

The application provides an earphone, which comprises a hook-shaped part, a connecting part and a holding part, wherein the connecting part is connected with the hook-shaped part and the holding part, the hook-shaped part is used for being hung between the rear side of an ear of a user and the head in a wearing state, and the holding part is used for contacting the front side of the ear, so that the holding part is allowed to be matched with the hook-shaped part to clamp the ear; the side of the holding part facing the ear part comprises a first area and a second area, the second area is farther away from the connecting part than the first area, and the second area protrudes towards the ear part than the first area.

In some embodiments, the second region is located at a free end of the retaining portion remote from the connecting portion, the retaining portion being disposed in a convex hull configuration at the free end.

In some embodiments, the holding portion has a thickness direction, the thickness direction being defined as a direction in which the holding portion approaches or separates from the ear portion in the worn state; wherein the maximum protrusion height of the second region with respect to the first region in the thickness direction is greater than or equal to 1mm.

In some embodiments, the holding portion has a thickness direction, the thickness direction being defined as a direction in which the holding portion approaches or separates from the ear portion in the worn state; the earphone comprises a core for converting an electric signal into mechanical vibration, the core is fixed in the holding part and forms a front cavity, the holding part is provided with a sound outlet communicated with the front cavity, the sound outlet outputs sound to the ear, and the orthographic projection of the sound outlet on the ear along the thickness direction at least partially falls into the concha cavity and/or the concha boat of the ear.

In some embodiments, the sound outlet is located in the second region.

In some embodiments, the earhole of the holding portion is located on a side of the ear near the top of the user's head and is in contact with the antihelix of the ear; the orthographic projection of the sound outlet on the ear part along the thickness direction at least partially falls into the concha boat.

In some embodiments, the holding portion includes a movement housing connected to the connecting portion, the movement is fixed in a receiving space of the movement housing, the movement housing includes a first housing and a second housing that are disposed opposite to each other in a thickness direction, the first housing is closer to the ear than the second housing, the movement is fixed on a side of the first housing facing the second housing to enclose a front cavity, and the sound outlet is provided on a side of the first housing facing the ear.

In some embodiments, the first housing is designed to be different in thickness on a side facing the ear, and includes two regions corresponding to the first region and the second region one to one, respectively, so that the second region protrudes toward the ear compared to the first region.

In some embodiments, the holding portion has a thickness direction, the thickness direction being defined as a direction in which the holding portion approaches or separates from the ear portion in the worn state; wherein, the orthographic projection of the hook-shaped part on the reference plane perpendicular to the thickness direction is not overlapped with the orthographic projection of the holding part on the reference plane.

In some embodiments, the earphone includes a first charging electrode and a second charging electrode disposed at the hook, one of the first charging electrode and the second charging electrode serving as a charging positive electrode, and the other one serving as a charging negative electrode.

Drawings

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

FIG. 1 is a schematic front side elevational view of a profile of a user's ear as described herein;

fig. 2 is a schematic front view of an embodiment of an earphone provided in the present application;

FIG. 3 is a left side schematic view of the headset of FIG. 2;

fig. 4 is a schematic view of the front side view of the ear camera of fig. 2 in a worn state;

fig. 5 is a rear elevational view of the ear camera of fig. 2 in a donned state;

fig. 6 is a schematic view of a mechanical model of the ear camera of fig. 2 in a worn state;

fig. 7 is a schematic front view of another embodiment of an earphone provided in the present application;

FIG. 8 is a left side schematic view of the headset of FIG. 7;

fig. 9 is a schematic view in front side elevation of the ear camera of fig. 7 in a worn condition;

fig. 10 is a rear elevational view of the ear camera of fig. 7 in a donned state;

fig. 11 is a schematic view of a mechanical model of the ear camera of fig. 7 in a worn state;

fig. 12 is a schematic top view of a further embodiment of an earphone provided herein;

fig. 13 is a schematic front view of a further embodiment of an earphone provided in the present application;

fig. 14 is a schematic structural view of still another embodiment of the earphone provided in the present application;

fig. 15 is a schematic view of a mechanical model of the ear camera of fig. 14 in a worn state;

FIG. 16 is a schematic view of the structure of one embodiment of the earphone provided by the present application on the side facing away from the ear;

FIG. 17 is a schematic view of a structure of an embodiment of the earphone provided in the present application facing an ear side;

FIG. 18 is a schematic diagram of the structure of an embodiment of the headset provided herein viewed from the top of a user's head;

FIG. 19 is a schematic diagram illustrating a disassembled structure of an embodiment of the earphone provided by the present application;

fig. 20 is a schematic diagram of a disassembled structure of an embodiment of an earphone provided in the present application;

FIG. 21 is a schematic diagram of an exploded structure of an embodiment of a headset provided herein;

FIG. 22 is a schematic cross-sectional view of an embodiment of a headset provided herein;

FIG. 23 is a schematic view of the structure of one embodiment of the earphone provided in the present application on the side facing away from the ear;

FIG. 24 is a schematic view of an embodiment of a headset provided herein viewed from the top of a user's head;

fig. 25 is a schematic diagram of a disassembled structure of an embodiment of the earphone provided in the present application;

fig. 26 is a schematic structural view of one embodiment of the movement provided in the present application facing the main board;

fig. 27 is a schematic diagram of a disassembled structure of an embodiment of the earphone provided in the present application;

FIG. 28 is a schematic view of the structure of one embodiment of the earphone provided in the present application on the side facing away from the ear;

fig. 29 is a schematic view of the structure of an embodiment of the earphone provided in the present application, as viewed from the top side of the user's head;

FIG. 30 is a schematic diagram illustrating a disassembled structure of an embodiment of the earphone provided by the present application;

FIG. 31 is a schematic view showing the structure of one embodiment of the partition provided in the present application toward the movement side;

FIG. 32 is a schematic cross-sectional view of an embodiment of a headset provided herein;

FIG. 33 is a schematic cross-sectional view of an embodiment of a headset provided herein;

FIG. 34 is a schematic diagram of the sound field distribution of an acoustic dipole provided herein;

FIG. 35 is a schematic diagram of sound field distribution of an acoustic dipole in combination with a baffle;

FIG. 36 is a diagram showing far-field sound pressure of an acoustic dipole in combination with a baffle;

FIG. 37 is a schematic diagram of a theoretical model of an acoustic dipole in combination with a baffle according to the present disclosure;

FIG. 38 is a schematic diagram of the relationship between the parameter α and the included angle θ provided in the present application;

FIG. 39 is a schematic diagram of the relative relationship of one embodiment of an acoustic dipole to an ear provided herein;

FIG. 40 is a schematic view of a structure of an embodiment of the earphone provided in the present application facing an ear side;

FIG. 41 is a schematic diagram of an embodiment of a headset provided herein;

FIG. 42 is a schematic diagram of a frequency response curve of an embodiment of a headset provided herein;

FIG. 43 is a schematic view of the structure of the rear cavity of an embodiment of the earphone provided herein;

FIG. 44 is a schematic diagram of a frequency response curve of an embodiment of a headset provided herein;

fig. 45 is a schematic structural diagram of three embodiments of the earphone provided in the present application in a wearing state.

Detailed Description

The present 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 illustration of the present application, but do not limit the scope of the present application. Likewise, the following embodiments are only some, but not all, of the embodiments of the present application, and all other embodiments obtained by one of ordinary skill in the art without making any inventive effort are within the scope of the present application.

Reference in the present application 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 present application. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic diagram of a front side structure of a contour of an ear of a user as described herein.

As shown in fig. 1, in addition to the external auditory canal 101 and the concha cavity 102 nearby, the ear 100 of the user has a certain depth and volume in the three-dimensional space in the parts such as the concha boat 103, the triangular fossa 104 and the like, and can also be used for realizing the wearing requirement of the earphone. In other words, by reasonably designing the structure of the earphone and by means of the parts of the ear 100 of the user other than the external auditory meatus 101, the wearing of the earphone and the propagation of mechanical vibration can be realized, and the external auditory meatus 101 of the user can be released, so that the physical health of the user can be increased, and the occurrence probability of traffic accidents can be reduced. Based on this, the present application proposes a headset in another way, and mainly uses the upper half portion of the ear 100 of the user (specifically, the area where the parts of the concha boat 103, the triangular fossa 104, the antitragus 105, the otoboat 106, the otowheel 107, etc. are located) to implement wearing of the headset and propagation of mechanical vibration. Of course, in order to improve the comfort and reliability of the earphone in terms of wearing, the earphone may be further provided by the earlobe 108 or other parts of the user. Further, for ease of description, specific physiological locations on ear 100 may be further identified, such as the superior auricle LA where the leading edge of helix 107 connects to the head, dar Wen Jiejie LB on helix 107, the trabecular notch LC of helix 105 near the end of earlobe 108 and toward concha chamber 102, and the intertragic notch LD of concha chamber 102 near the end of earlobe 108. Of course, due to individual differences in users, a physiological location such as dar Wen Jiejie may not be apparent, or even present, on some users 'ears, but this does not mean that other users' ears do not have the physiological location.

It should be noted that: although the external auditory canal has a certain depth to extend to the tympanic membrane, for convenience of description, and in connection with fig. 1, the external auditory canal refers specifically to its entrance facing away from the tympanic membrane, i.e., the earhole, unless specifically stated otherwise. Further, the term "front side of an ear" as used herein is a concept that is intended to refer to the side of the ear facing away from the head, such as in fig. 1, as opposed to the back side of the ear, which is intended to refer to the ear of the user.

Referring to fig. 2 to 5 together, fig. 2 is a schematic front view of an embodiment of an earphone provided in the present application, fig. 3 is a schematic left view of the earphone in fig. 2, fig. 4 is a schematic front view of the earphone in fig. 2 in a wearing state, and fig. 5 is a schematic rear view of the earphone in fig. 2 in a wearing state. It should be noted that: the three directions X, Y, Z of the earphone are shown in fig. 2, mainly to illustrate three planes XY, XZ, YZ, so as to facilitate the corresponding description hereinafter. Accordingly, all directional indicators (such as up, down, left, right, front, back … …) in this application are primarily used to explain the relative positional relationship, movement, etc. between the components in a particular pose (as shown in fig. 2); if the particular gesture changes, the directional indication changes accordingly.

As shown in fig. 2 and 3, the earphone 10 may include a hook portion 11, a connection portion 12, and a holding portion 13. The connecting portion 12 connects the hook portion 11 and the holding portion 13, so that the earphone 10 is curved in a three-dimensional space when in a non-wearing state (i.e., a natural state). In other words, in the three-dimensional space, the hook 11, the connecting portion 12, and the holding portion 13 are not coplanar. So arranged, when the earphone 10 is in a worn state, as shown in fig. 4 and 5, the hook portion 11 may be mainly used to hang between the rear side of the user's ear and the head, and the holding portion 13 may be mainly used to contact the front side of the user's ear, thereby allowing the holding portion 13 and the hook portion 11 to cooperate to clamp the ear. As an example, the connecting portion 12 may extend from the head to the outside of the head, and thus cooperate with the hook portion 11 to provide the holding portion 13 with a pressing force against the front side of the ear. The holding portion 13 may specifically be pressed against an area where the parts such as a concha, a triangular fossa, and an antitragus are located under the action of the pressing force, so that the ear canal of the ear is not blocked when the earphone 10 is in the wearing state. As an example, when the earphone 10 is in the wearing state, the projection of the holding portion 13 on the ear of the user falls mainly within the auricle range of the ear; further, the holding portion 13 may be located on the side of the external auditory meatus of the ear near the head top of the user and in contact with the helix and/or the antitragus. Thus, the holding part 13 can be prevented from shielding the external auditory meatus, and the ears of the user can be further liberated; it is also possible to increase the contact area between the holding portion 13 and the ear portion, thereby improving wearing comfort of the earphone 10.

It should be noted that: a simulator having a head and its (left and right) ears, such as GRAS 45BC KEMAR, may be made based on ANSI:S3.36, S3.25 and IEC:60318-7 standards, so that the description herein of "the user wearing the headset" or "the headset is in a worn state" may refer to the headset being worn on the ears of the simulator. Based on this, the "wearing state" described herein may refer to a normal wearing state after the earphone is worn on the ear of the aforementioned simulator; for convenience of description, the above-mentioned normal wearing state may be further illustrated from the front side, the rear side, etc. of the ear, for example, the normal wearing state shown in fig. 4 and 5, and further for example, the normal wearing state shown in fig. 9 and 10. Of course, due to individual differences among users, the actual wearing state of the earphone 10 may be different from the aforementioned normal wearing state.

For users of adult males and the like, the thickness of the ear is often thicker (commonly called as a thick ear), and by reasonably designing the shape, the size and the like of the connecting part 12 and the connection relation between the connecting part and the hook part 11 and the holding part 13, the following will exemplarily describe, so that the earphone 10 can be ensured to be attached to the ear as much as possible, the wearing stability of the earphone 10 can be improved, and the earphone 10 can be prevented from excessively clamping the auricle near the upper auricle, namely, the upper auricle is naturally bypassed, so that the wearing comfort of the earphone 10 can be improved. Further, for users of children, minors, adult females, etc., the thickness of the ear is often relatively thin (commonly referred to as "thin ear"), especially compared to the thickness of an adult male ear, in order to increase the fit of the earphone 10 to the user's ear when in a worn state, the size of the connecting portion 12 may be small, for example, the connecting portion 12 may be a circular arc transition between the holding portion 13 and the hook portion 11.

Further, the earphone 10 may further include a deck 14, a main board 15, and a battery 16. The movement 14 is mainly used for converting an electrical signal into corresponding mechanical vibration (i.e. sound production), and can be electrically connected with the main board 15 and the battery 16 through corresponding conductors; the main board 15 is mainly used for controlling the sounding of the movement 14, and the battery 16 is mainly used for providing electric energy for the sounding of the movement 14. Of course, the earphone 10 described herein may further include a microphone such as a microphone and a pickup, and may further include communication devices such as bluetooth and NFC (Near Field Communication ), which are electrically connected to the main board 15 and the battery 16 through corresponding conductors to implement corresponding functions.

As an example, the movement 14 may be fixed to the holding portion 13, and the movement 14 can be pressed against the ear of the user by the pressing force when the earphone 10 is in the wearing state. Further, when the earphone 10 is in the wearing state, since the holding portion 13 is mainly located at the front side of the ear of the user, as shown in fig. 4, the holding portion 13 may be provided with some function keys (not shown in fig. 2) for facilitating the user to interact with the earphone 10, in addition to the function keys for fixing the movement 14. Based on this, the main board 15 may also be provided at the holding portion 13 to shorten the wiring distance between the movement 14 and other functions such as the function keys and the like and the main board 15. Notably, are: since the holding portion 13 may be provided with the movement 14, the main board 15, the function keys, and the like, and is located on the front side of the user's ear when the earphone 10 is in the wearing state, the battery 16 may be provided on the hook portion 11, and is mainly located between the rear side of the user's ear and the head when the earphone 10 is in the wearing state, as shown in fig. 5. Thus, the capacity of the battery 16 can be increased to improve the endurance of the earphone 10; the weight of the earphone 10 may also be balanced to improve the stability and comfort of the earphone 10 in terms of wear. At this time, the weight of the earphone 10 may be distributed at two ends relatively uniformly, and the ear of the user may also be used as a fulcrum to support the earphone 10 when the earphone 10 is in the wearing state, so that the earphone 10 may not slide down in at least the non-moving state when the earphone 10 is in the wearing state. Of course, the user's ears may bear a substantial portion of the weight of the headset 10, which may be prone to discomfort in a long wearing scenario. For this purpose, the hook portion 11, the connecting portion 12, the holding portion 13, and the like may be made of a soft material (e.g., polycarbonate, polyamide, acrylonitrile-butadiene-styrene copolymer, etc.) so as to improve the comfort of the earphone 10 in terms of wearing. Further, in order to improve the structural strength of the earphone 10, elastic wires such as spring steel, titanium alloy, titanium nickel alloy, chrome molybdenum steel, etc. may be provided in the structures of the hook portion 11, the connecting portion 12, the holding portion 13, etc.

Further, different users may have large differences in age, sex, expression of the trait of genetic control, etc., resulting in different users' ears and heads may be different in size and different in trait. For this reason, the hook portion 11 is rotatable relative to the connection portion 12, or the holding portion 13 is rotatable relative to the connection portion 12, or one portion of the connection portion 12 is rotatable relative to the other portion, so that the relative positional relationship among the hook portion 11, the connection portion 12, and the holding portion 13 in the three-dimensional space can be adjusted, so that the earphone 10 can be adapted to different users, that is, the application range of the earphone 10 to users in wearing is increased. For example: the connecting part 12 is made of deformable materials such as soft steel wires, and the relative positions of the hook-shaped part 11, the connecting part 12 and the holding part 13 in the three-dimensional space can be adjusted by a user bending one part of the connecting part 12 relative to the other part, so that the wearing requirement of the user can be met. For another example: the connecting part 12 is provided with a rotating shaft mechanism 121, and a user can adjust the relative positions of the hook-shaped part 11, the connecting part 12 and the holding part 13 in the three-dimensional space through the rotating shaft mechanism 121, so that the wearing requirement of the user can be met. The detailed structure of the rotation shaft mechanism 121 is not described in detail herein, and is understood by those skilled in the art. Further, if the hook 11 is movably connected with the connecting portion 12 through the rotating shaft mechanism 121, the hook 11 is rotatable relative to the connecting portion 12; if the holding part 13 is movably connected with the connecting part 12 through the rotating shaft mechanism 121, the holding part 13 can rotate relative to the connecting part 12; if one part of the connecting portion 12 is movably connected with the other part through the rotating shaft mechanism 121, one part of the connecting portion 12 is rotatable relative to the other part.

Referring to fig. 6, fig. 6 is a schematic view of a mechanical model of the ear camera of fig. 2 in a worn state. It should be noted that: the YZ plane in fig. 6 can be seen as the plane in which the user's head lies; the ABC segment in fig. 6 may be considered a hook, the CD segment in fig. 6 may be considered a connection, and the DEF segment in fig. 6 may be considered a retention. Further, the point C in fig. 6 may correspond to the area where the upper proximal end of the ear in fig. 1 is located (e.g., the area indicated by the dashed box C in fig. 1).

As shown in fig. 4-6, when the earphone 10 is in the worn state, the ABC segment is located primarily on the back side of the user's ear, the DEF is located primarily on the front side of the user's ear, and the CD segment is primarily adapted to the thickness of the user's ear. At this point, the BC, CD and DEF sections can form a "clip" like structure to enable the earphone 10 to be clipped to the user's ear to form the basic situation of wear. The following is an exemplary description of the stress on the earphone 10 and its stability, etc., in terms of wear:

as shown in fig. 6, the hook 11 is bent toward the head of the user in a direction from a first connection point C between the hook 11 and the connection portion 12 to a free end of the hook 11 (e.g., an end at which a point a in fig. 6 is located), and forms a first contact point B and a second contact point a with the head. The first contact point B is located between the second contact point a and the first connection point C. It should be noted that: the first contact point B and the second contact point a are defined points in the mechanical model, and when the earphone 10 is actually worn, due to the difference of physiological structures such as the head, the ear and the like of different users, a certain influence can be caused on the actual wearing of the earphone 10, and the position of the earphone 10 contacted with the head when the earphone is actually worn can correspond to the free end of the hook-shaped part 11, or any point between the free end and the first contact point B; of course, the AB section may also be partially or wholly abutted against the head of the user, and the mechanical model and the stability principle in actual wearing are the same as those of the above technical solutions, which are easy for those skilled in the art to know and adjust the content of the cooperation without creative labor on the basis of the technical solutions of the present application, and are not repeated here. The arrangement is such that the hook 11 forms a lever structure with the first contact point B as a fulcrum. At this time, the free end of the hook 11 is pressed against the head of the user, and the head of the user provides a force directed to the outside of the head at the second contact point a, which is converted into a force directed to the head at the first connection point C through the lever structure, and further provides a pressing force to the front side of the ear for the holding portion 13 through the connection portion 12.

It should be noted that: in order to enable the free end of the hook 11 to press against the head of the user when the earphone 10 is in the worn state and to enable the head of the user to provide a force directed towards the outside of the head at the second contact point a, at least the following conditions need to be met: the free end of the hook 11 forms an angle with the YZ plane when the earphone 10 is in the non-wearing state that is larger than the angle formed between the free end of the hook 11 and the YZ plane when the earphone 10 is in the wearing state. The larger the included angle formed between the free end of the hook-shaped portion 11 and the YZ plane when the earphone 10 is in the non-wearing state, the better the free end of the hook-shaped portion 11 can be pressed against the head of the user when the earphone 10 is in the wearing state, and the larger the force directed to the outer side of the head can be provided by the head of the user at the second contact point a.

Notably, are: when the free end of the hook portion 11 abuts against the head of the user, in addition to enabling the head of the user to provide a force directed to the outside of the head at the second contact point a, at least the BC section of the hook portion 11 forms another pressing force against the rear side of the ear, and can cooperate with the pressing force formed by the holding portion 13 against the front side of the ear, so as to form a pressing effect of "front and rear pinching" on the ear of the user, thereby improving the stability of the earphone 10 in terms of wearing.

Further, the battery 16 may be mainly disposed on the AB section of the hook portion 11, so as to overcome the dead weight of the holding portion 13 and the inner core 14, the main board 15, and other structures, and further improve the stability of the earphone 10 in wearing. Of course, the surface of the hook 11 contacting the ear and the head of the user may be a frosted surface, a textured surface, etc. to increase the friction between the hook 11 and the ear and the head of the user, so as to overcome the dead weight of the holding part 13 and the inner core 14, the main board 15, etc. thereof, and further improve the stability of the earphone 10 in wearing. Further, the free end (especially the area where the point a is located) of the hook portion 11 is deformable, so that when the earphone 10 is in a wearing state, the free end of the hook portion 11 is pressed against the head of the user and deformed, so that the contact area between the free end of the hook portion 11 and the head of the user is increased, and the comfort and stability of the earphone 10 in wearing are improved. For example: the hook 11 is formed by two-shot molding, and the elastic modulus of the free end (especially the area of the point A) is smaller than that of other areas so as to increase the deformability of the free end. For another example: the free end of the hook-shaped portion 11 is provided with a hole 111, so that the free end is in a hollow structure, and the deformation capability of the free end is improved. Wherein the holes 111 may be through holes and/or blind holes, the number of which may be one or more, and the axial direction of which may be perpendicular to the contact surface between the free end of the hook 11 and the head of the user.

As an example, the straight line distance between the projection of the C point on the YZ plane and the projection of the EF section on the YZ plane may be 10-17mm, preferably 12-16mm, more preferably 13-15mm. The angle between the projection of the BC segment on the XY plane and the projection of the DE segment on the XY plane is 0-25 °, preferably 0-20 °, more preferably 2-20 °. Further, the angle between the AB segment and the normal line passing through the B point on the XY plane is 0 to 25, preferably 0 to 20, more preferably 2 to 20. Further, in some embodiments, the straight line distance between the projection of the C point on the XY plane and the projection of the EF segment on the XY plane may be in the range of 2-4mm, preferably 2.8mm. Of course, in other embodiments, the linear distance between the projection of the C point on the XY plane and the projection of the EF segment on the XY plane may be in the range of 1-4mm, preferably 2.5mm. In this way, the connection portion 12 is made to bypass the upper auricle of the ear in the worn state, improving the wearing comfort of the earphone 10.

Based on the above detailed description, the present application provides for reasonably evenly distributing the weight of the earphone 10 so that the ear of the user can serve as a fulcrum to support the earphone 10 when the earphone 10 is in the wearing state; on the other hand, the connecting part 12 is arranged between the hook-shaped part 11 and the holding part 13 of the earphone 10, so that the connecting part 12 is matched with the hook-shaped part 11 when the earphone 10 is in a wearing state to provide a pressing force on the front side of the ear for the holding part 13, and further the earphone 10 can be firmly clung to the ear of a user when the earphone 10 is in the wearing state. By such arrangement, not only the stability of the earphone 10 in wearing can be improved, but also the reliability of the earphone 10 in sounding can be improved.

Referring collectively to fig. 7 to 11, fig. 7 is a schematic front view of another embodiment of an earphone provided in the present application, fig. 8 is a schematic left view of the earphone in fig. 7, fig. 9 is a schematic front view of the earphone in fig. 7 in a wearing state, fig. 10 is a schematic rear view of the earphone in fig. 7 in a wearing state, and fig. 11 is a schematic mechanical model of the earphone in fig. 7 in a wearing state. It should be noted that: the YZ plane in fig. 11 can be seen as the plane in which the user's head lies; the ABC segment in fig. 11 may be considered a hook, the CD segment in fig. 11 may be considered a connection, and the DEF segment in fig. 11 may be considered a retention. Further, the point C in fig. 11 may correspond to the area where the upper proximal end of the ear in fig. 1 is located (e.g., the area indicated by the dashed box C in fig. 1).

The main difference from the above embodiment is that: in this embodiment, as shown in fig. 7 and 8, the hook portion 11 is closer to the holding portion 13 as a whole, so that when the earphone 10 is in the wearing state, as shown in fig. 9 and 10, the free end of the hook portion 11 facing away from the connecting portion 12 acts on the rear side of the ear of the user, instead of pressing against the head of the user.

As shown in fig. 11, the hook portion 11 is bent toward the rear side of the ear portion in a direction from the first connection point C between the hook portion 11 and the connection portion 12 to the free end of the hook portion 11 (for example, the end at which the point a in fig. 11 is located), and forms a first contact point B with the rear side of the ear portion, and the holding portion 13 forms a second contact point F with the front side of the ear portion. In the earphone 10, the distance between the first contact point B and the second contact point F in the extending direction of the connecting portion 12 in the natural state (i.e., in the non-wearing state) is smaller than the distance between the first contact point B and the second contact point E in the extending direction of the connecting portion 12 in the wearing state, so that the holding portion 13 is provided with a pressing force against the front side of the ear portion. In other words, the distance between the first contact point B and the second contact point F in the extending direction of the connecting portion 12 in the natural state of the earphone 10 is smaller than the thickness of the user's ear, so that the earphone 10 can be clipped to the user's ear like a "clip" in the wearing state.

Further, a first connection BC is provided between the first contact point B and the first connection point C, and a second connection EF is provided between the second contact point F and the second connection point E of the holding portion 13 and the connection portion 12.

Further, the hook portion 11 may also extend in a direction away from the connection portion 12, i.e. the overall length of the hook portion 11 is extended, so that when the earphone 10 is in the worn state, the hook portion 11 may also form a third contact point a with the rear side of the ear, the first contact point B being located between the first connection point C and the third contact point a and being close to the first connection point C. For the earphone 10, the distance between the projections of the first contact point B and the third contact point a on the reference plane (e.g., YZ plane in fig. 11) perpendicular to the extending direction of the connecting portion 12 in the natural state is smaller than the distance between the projections of the first contact point B and the third contact point a on the reference plane (e.g., YZ plane in fig. 11) perpendicular to the extending direction of the connecting portion 12 in the wearing state. So set up, not only can make the free end of hook 11 press against the rear side of user's ear, but also ABC section can be the C style of calligraphy, wherein, still can make third contact point A be located the ear and be close to the region of earlobe, and then make hook 11 can hold in vertical direction (arrow Z in fig. 11) user's ear to overcome the dead weight of retainer 13. In addition, after the overall length of the hook 11 is extended, not only the user's ear can be clamped in the vertical direction, but also the contact area between the hook 11 and the user's ear can be increased, that is, the friction between the hook 11 and the user's ear can be increased, thereby improving the stability of the earphone 10 in terms of wearing.

Referring to fig. 12, fig. 12 is a schematic top view of a headset according to another embodiment of the present disclosure.

The main difference from any of the above embodiments is that: in this embodiment, the holding portion 13 may further extend and be held in the concha boat and/or triangular fossa of the ear, as well as against the front side of the ear of the user. In this way, the holding part 13 can be stopped by the auricle of the ear at least in the extension direction of the connecting part 12, so as to avoid the holding part 13 from turning outwards when the earphone 10 is in the wearing state, and further improve the stability of the earphone 10 in terms of wearing.

As an example, as shown in fig. 12, the earphone 10 further includes an extension 17, and the extension 17 is connected to the holding portion 13. Wherein the extension 17 has a clearance with the holding portion 13 in the extension direction of the connecting portion 12 (arrow X in fig. 12), which clearance may be smaller than or equal to the thickness of the helix of the ear. The arrangement is such that the extension 17 can extend into the concha and/or triangular fossa of the ear when the earphone 10 is in the worn state. At this time, since the concha boat and/or the triangular fossa has a certain depth and volume in the three-dimensional space, the holding portion 13 can be hooked by the auricle of the ear when the extension portion 17 extends into the concha boat and/or the triangular fossa, so as to avoid the holding portion 13 from being turned outwards when the earphone 10 is in the wearing state, thereby improving the stability of the earphone 10 in terms of wearing. Meanwhile, the holding part 13 is pressed against the front side of the ear part under the action of the pressing force, and the holding part and the ear part are matched with each other, so that the stability of the earphone 10 in wearing is improved.

Referring to fig. 13, fig. 13 is a schematic front view of a headset according to another embodiment of the present application.

The main difference from any of the above embodiments is that: in this embodiment, the holding portion 13 has a multi-stage structure so as to adjust the relative position of the movement 14 on the overall structure of the earphone 10. The arrangement is such that the ear canal is not obstructed when the earphone 10 is in the worn state, and the movement 14 is brought as close to the ear canal as possible.

As an example, as shown in (a) of fig. 13, the holding portion 13 may include a first holding section 131a, a second holding section 132a, and a third holding section 133a connected end to end in this order. The end of the first holding section 131a facing away from the second holding section 132a is connected to the connecting portion 12, and the third holding section 133a is mainly used for setting up the structural members such as the movement 14 and the main board 15. Further, the second retaining segment 132a is folded back with respect to the first retaining segment 131a and has a space therebetween, i.e. both have a U-shaped structure.

As an example, as shown in (b) of fig. 13, the holding portion 13 may include a first holding section 131b, a second holding section 132b, and a third holding section 133b connected end to end in this order. One end of the first holding section 131b facing away from the second holding section 132b is connected to the connecting portion 12, and the third holding section 133b is mainly used for setting up structural members such as the movement 14 and the main board 15. Further, the second holding section 132b is bent with respect to the first holding section 131b such that a space is provided between the third holding section 133b and the first holding section 131 b.

Referring to fig. 14 and 15 together, fig. 14 is a schematic structural diagram of still another embodiment of the headset provided in the present application, and fig. 15 is a schematic mechanical model of the headset in fig. 14 in a wearing state. It should be noted that: the YZ plane in fig. 15 can be seen as the plane in which the user's head lies; the BC segment in fig. 15 may be considered a hook, the CD segment in fig. 15 may be considered a connection, the DEF segment in fig. 15 may be considered a retention, and the GH segment in fig. 15 may be considered an extension. Further, the point C in fig. 15 may correspond to the area where the upper proximal end of the ear in fig. 1 is located (e.g., the area indicated by the dashed box C in fig. 1).

The main difference from any of the above embodiments is that: in this embodiment, as shown in fig. 14, the length of the hook portion 11 is shorter, and the included angle between the hook portion 11 and the connecting portion 12 is smaller; the extension 17 is connected to the holding part 13 and has a clearance with the holding part 13, which clearance may be smaller than or equal to the thickness of the helix of the ear. So set up, in order to when earphone 10 is in wearing the state, hook portion 11 cooperates with connecting portion 12 so that keep portion 13 hangs in the front side of user's ear, and extension 17 can stretch into the concha boat and/or the triangular fossa of ear to avoid keep portion 13 to turn out, and then improve earphone 10's stability in wearing the aspect. The present embodiment is exemplified by an example in which the extension 17 can extend into the ear of the cymba.

As shown in fig. 15, the point B hooks the recess of the rear side of the ear, and the point C serves as a fulcrum so that the hook 11 can overcome the self weight of the holding portion 13, thereby preventing the holding portion 13 from falling off the user's ear. At this time, the frictional force between the hook 11 and the ear can also be increased to improve the stability of the earphone 10 in terms of wearing. Further, the H point hooks around the auricle of the ear, and the G point serves as another fulcrum, so that the extension 17 can overcome the self weight of the holding portion 13, thereby preventing the holding portion 13 from being turned out from the ear of the user. At this time, the friction force between the extension 17 and the ear portion may also be increased to improve the stability of the earphone 10 in terms of wearing.

Based on the above-described related description, the earphone 10 can be held on the ear in the wearing state. Wherein the earphone 10 may elastically grip the ear for increased wearing stability and comfort.

As an example, in connection with fig. 16, the hook 11 may include an elastic portion 112 connected with the connection portion 12 and a battery portion 113 at a free end of the hook 11. The battery portion 113 is at least used for providing the battery 16 of the earphone 10, and the battery 16 may be provided in a column shape. To facilitate the placement of structural components such as the battery 16, the battery portion 113 may be made of a harder material, such as a hard plastic; of course, in order to achieve the comfort of wearing, at least the area of the battery portion 113 that contacts the skin of the user may be provided with an elastic coating layer, or an elastic paint may be sprayed. Further, the elastic portion 112 may have a certain elastic deformability compared to the battery portion 113, so that the hook portion 11 can deform under the external force, and further generate a displacement compared to the holding portion 13, so as to allow the hook portion 11 to cooperate with the holding portion 13 to elastically clamp the ear portion. In this way, the user may first apply a slight force to deflect the hook portion 11 away from the holding portion 13 during wearing of the earphone 10 so that the ear portion extends between the holding portion 13 and the hook portion 11; after the wearing position is proper, the hands are loosened to allow the earphone 10 to elastically clamp the ears; of course, the position of the earphone 10 on the ear can be further adjusted according to the actual wearing situation.

The ratio between the length of the elastic portion 112 and the length of the hook portion 11 may be greater than or equal to 48%, preferably the aforementioned ratio may be greater than or equal to 60%; the radial dimension of the elastic portion 112 in any direction in the cross section may be less than or equal to 5mm, and preferably the aforementioned radial dimension may be less than or equal to 4mm. As such, the resilient portion 112 may be provided in an elongated configuration such that the resilient portion 112 has a more excellent ability to resiliently deform, thereby allowing the earphone 10 to better resiliently grip the ear. In addition, the cross-sectional area of the elastic portion 112 is as small as possible, so that a corresponding wearing space can be reserved for near-sighted glasses, far-sighted glasses or intelligent glasses such as AR, VR and MR, and further other wearing requirements of the user are met. Further, since the hook 11 is mainly hung between the head and the ear of the user, the cross section of the elastic portion 112 may be circular or elliptical, so that at least the elastic portion 112 can better contact with the ear and/or the head, and can be close to the boundary line between the ear and the head as much as possible, thereby increasing the wearing stability.

The cross-sectional area of at least a portion of the battery portion 113 may be greater than the maximum cross-sectional area of the elastic portion 112, so that the battery portion 113 can provide a larger capacity of the battery 16 to increase the cruising ability of the earphone 10. In some embodiments, the battery portion 113 may be provided in a cylindrical shape, and the ratio between the length and the outer diameter may be less than or equal to 6.

Based on the above-described related description, for the hook portion 11, since the elastic portion 112 and the battery portion 113 have different uses, there may be a large difference in cross-sectional areas of the two. For this, the hook portion 11 may further include a transition portion 114 between the elastic portion 112 and the battery portion 113, the transition portion 114 having a cross-sectional area between the cross-sectional area of the elastic portion 112 and the cross-sectional area of the battery portion 113 and gradually increasing in a direction from the elastic portion 112 to the battery portion 113. In this way, not only the uniformity of the hook 11 can be increased in appearance, but the hook 11 can be better brought into contact with the ear and/or head. Further, since there are typically a plurality of protuberances on the rear side of the ear, such as a concha boat protuberance corresponding to a concha boat and a concha cavity protuberance corresponding to a concha cavity, and the concha cavity protuberance is typically closer to the earlobe than the concha boat protuberance, the transition portion 114 may be provided with a contoured recess corresponding to the contour of the rear side of the ear on the side facing the ear, thereby facilitating the hook portion 11 to make effective contact with the rear side of the ear, such as the contoured recess contacting the concha cavity protuberance. In short, the bulge at the rear side of the ear can be avoided through the profiling concave, so that the hook-shaped part 11 is prevented from being jacked up by the bulge at the rear side of the ear, and the hook-shaped part 11 is better contacted with the ear. In some embodiments, for the transition portion 114, the radius of curvature of the contoured recess may be smaller than the radius of curvature of the other side of the transition portion 114 facing away from the ear portion, that is, the contoured recess may be curved to a greater extent, so that the hook portion 11 accommodates various ridges and recesses on the rear side of the ear portion, while other regions of the transition portion 114 are primarily smooth as soon as possible between the elastic portion 112 and the battery portion 113, thereby increasing the uniformity of the hook portion 11 in appearance.

It is well known in the medical, anatomical, etc. fields that 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) can 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.

Based on the above related description, the weight of the earphone 10 and its distribution may affect the wearing stability to some extent. The weight of the hook 11 may be mainly concentrated on the battery portion 113. In some embodiments, the weight ratio between the total weight of the holding portion 13 and the total weight of the battery portion 113 may be less than or equal to 4. Referring to fig. 17, in the worn state, and as viewed from the side of the holding portion 13 facing away from the ear portion, the battery portion 113 may be located at least partially on the side of the first reference surface (denoted RP 1) facing toward the front of the user, wherein the first reference surface passes through the contact point (denoted CP 0) of the holding portion 13 with the ear portion and is parallel to the above-mentioned coronal surface. In this way, the moment of the center of gravity of the battery portion 113 relative to, for example, the upper auricle is advantageously reduced, so as to avoid the battery portion 113 from turning over due to excessive self weight and/or excessive moment in the wearing state, thereby increasing the wearing stability. Further, the battery portion 113 may also intersect a second reference plane (denoted as RP 2) that is parallel to the coronal plane and is closest to a first point (denoted as CP 1) of the user's head along the vertical axis by the elastic portion 112. Further, the inner edges of the hook portion 11 and the connecting portion 12 toward the ear portion have a second position point (denoted CP 2) farthest from the contact point of the holding portion 13 with the ear portion, and the battery portion 113 may further intersect a third reference surface (denoted RP 3) passing through the second position point and parallel to the above-mentioned coronal plane. The second location point may be located on the connecting portion 12 or may be located at a boundary line between the hook portion 11 and the connecting portion 12, which will be described as an example. In this way, the center of gravity of the battery portion 113 and the center of gravity of the holding portion 13 are advantageously located on the same side of the first reference surface, and thus the wearing stability is increased.

For convenience of description, and in conjunction with fig. 16, the holding portion 13 may have a thickness direction, a length direction, and a height direction orthogonal to each other, and may be respectively marked with "X", "Y", and "Z" in order. The thickness direction is defined as a direction in which the holding portion 13 approaches or separates from the ear portion in the wearing state, the longitudinal direction is defined as a direction in which the holding portion 13 approaches or separates from the front of the user in the wearing state, and the height direction is defined as a direction in which the holding portion 13 approaches or separates from the top of the head of the user in the wearing state. In the wearing state, the height direction may be parallel to the vertical axis, and the thickness direction and the length direction may be parallel to the horizontal plane.

In some embodiments, such as fig. 16 to 18, the orthographic projection of the section of the hook portion 11 near the connecting portion 12 on the reference plane (for example, the plane in which YZ is located) perpendicular to the above thickness direction and the orthographic projection of the holding portion 13 on the above reference plane may partially coincide. The section of the hook-shaped portion 11 near the connecting portion 12 may be an elastic portion 112 having a much larger elastic deformability than the battery portion 113, or may be a hard structure located between the battery portion 113 and the connecting portion 12 and having a small elastic deformability than the battery portion 113. In this way, not only can the holding portion 13 and the hook portion 11 elastically grip the ear portion from the front side of the ear portion and the rear side of the ear portion, but also the grip force mainly exhibits compressive stress, thereby increasing the stability and comfort of wearing. In addition, the center of gravity of the battery portion 113 is close to the face of the user, so that wearing stability is improved. Of course, in other embodiments, such as the headphones shown in fig. 4 and 5, and further such as the headphones shown in fig. 9 and 10, the front projection of the hook portion 11 on the reference plane perpendicular to the thickness direction and the front projection of the holding portion 13 on the reference plane may be offset from each other.

As an example, in combination with fig. 16 and 17, the front projection of the elastic portion 112 on the reference plane and the front projection of the holding portion 13 on the reference plane may partially overlap, and the front projection of the battery portion 113 on the reference plane and the front projection of the holding portion 13 on the reference plane may be offset from each other. In this way, the holding portion 13 and the hook portion 11 are facilitated to elastically grip the ear portion in both the front and rear directions.

Further, the radii of curvature of the edges of the elastic portion 112 and the transition portion 114, which are orthographic projected on the above-mentioned reference plane toward the ear side, may be gradually increased and then gradually decreased in a direction from the connecting portion 12 to the hook portion 11 away from the battery portion 113. Wherein the gradual increase of the radius of curvature of the edge allows the hook 11 to better adapt to the contour of the rear side of the ear; the further gradual decrease can make the bending degree of the hook-shaped portion 11 near one end of the battery portion 113 become larger, and further make the battery portion 113 approach toward the holding portion 13, which is advantageous for the hook-shaped portion 11 to hook the rear side of the ear portion, so as to increase the wearing stability. Further, the radius of curvature of the edge may be gradually increased and then gradually decreased in a continuously changing manner, or may be gradually increased and then gradually decreased in a stepwise changing manner, or may be combined in two manners. For example: the edge includes a plurality of sections, each section having a radius of curvature, and the radius of curvature of the plurality of sections may be gradually increased and then gradually decreased in a direction from the connection portion 12 to the battery portion 113, which may be also referred to as a stepwise change. In order to increase the wearing stability, a section with the largest radius of curvature among the plurality of sections may overlap with the orthographic projection of the holding portion 13 on the above-described reference plane.

As an example, the edge of the elastic portion 112 and the transition portion 114 on the side of the front projection on the above reference plane toward the ear may have a first section (denoted 11A), the start point (denoted CP 3) of which is the connection point between the elastic portion 112 and the connection portion 12, and the end point (e.g., CP 1) of which is the highest point of the elastic portion in the height direction in the wearing state. Wherein the radius of curvature of the first section may be between 8mm and 10 mm. The starting point of the first section may coincide with the second location point or may be further away from the connecting portion 12 than the second location point, as will be exemplarily described later. Further, the aforementioned edges of the elastic portion 112 and the transition portion 114 may further have a second section (denoted as 11B), the start point of the second section being the end point of the first section, the end point of the second section (denoted as CP 4) may be between 8mm and 11mm from the aforementioned highest point in the aforementioned length direction, and the distance between 7mm and 10mm from the aforementioned highest point in the aforementioned height direction. Wherein the radius of curvature of the second section may be between 9mm and 12 mm. Further, the aforementioned edges of the elastic portion 112 and the transition portion 114 may further have a third section (denoted as 11C), the start point of the third section being the end point of the second section, the end point of the third section (denoted as CP 5) may be between 9mm and 12mm from the aforementioned highest point in the aforementioned length direction, and the distance between 19mm and 21mm from the aforementioned highest point in the aforementioned height direction. Wherein the radius of curvature of the third section may be between 29mm and 36 mm. Further, the aforementioned edges of the elastic portion 112 and the transition portion 114 may further have a fourth section (denoted as 11D), the start point of the fourth section being the end point of the third section, the end point of the fourth section (denoted as CP 6) may be between 7mm and 10mm from the aforementioned highest point in the aforementioned length direction, and the distance between 25mm and 32mm from the aforementioned highest point in the aforementioned height direction. Wherein the radius of curvature of the fourth section may be between 19mm and 25 mm. Further, the aforementioned edges of the elastic portion 112 and the transition portion 114 may further have a fifth section (denoted as 11E), the start point of the fifth section being the end point of the fourth section, the end point of the fifth section (denoted as CP 7) may have a distance from the aforementioned highest point in the aforementioned length direction of less than or equal to 2mm, and a distance from the aforementioned highest point in the aforementioned height direction may be between 30mm and 38 mm. Wherein the radius of curvature of the fifth section may be between 9mm and 13 mm. In this case, the fifth section may be provided with the profiling recess, and the radius of curvature of the profiling recess may be smaller than the radius of curvature of the fourth section.

It should be noted that: the end point of the second section, that is, the start point of the third section, may be an intersection point between the orthographic projection of the elastic portion 112 on the above reference plane and the upper edge of the holding portion 13; similarly, the end point of the third section, i.e., the start point of the fourth section, may be another intersection point between the orthographic projection of the elastic portion 112 on the above-described reference plane and the lower edge of the holding portion 13. In this case, the orthographic projection of the third section on the above-mentioned reference plane may fall entirely on the holding portion 13. Further, and in conjunction with fig. 28, the boundary between the elastic portion 112 and the transition portion 114 may be located in the fourth section. Accordingly, the start point of the section of the hook 11 near the connecting portion 12 may be the boundary between the hook 11 and the connecting portion 12, and the end point may be another intersection point between the orthographic projection of the elastic portion 112 on the above-described reference plane and the lower edge of the holding portion 13.

Referring to fig. 19, the hook 11 may include an elastic wire 115, a battery compartment 1161, and a wire 117, one end of the elastic wire 115 is connected to the connection part 12, the other end is connected to the battery compartment 1161, and the wire 117 may extend from the battery compartment 1161 to the connection part 12 and the holding part 13 along with the elastic wire 115. Wherein the elastic wire 115 provides the hook 11 with a certain elastic deformability, the battery compartment 1161 is at least used for arranging the battery 16, and the wire 117 is at least used for electrically connecting the battery compartment 1161 and the electronic components in the holding part 13. Further, the hook 11 may further include an elastic coating 118, such as silica gel, and the elastic coating 118 coats at least the elastic wire 115 and the conductive wire 117 to increase the appearance quality and the wearing comfort. Wherein the cross-sectional area of the battery compartment 1161 may be greater than the sum of the cross-sectional areas of the elastic portion 112 formed by the elastic wire 115 and the elastic coating 118, and preferably may also be greater than the sum of the cross-sectional areas of the elastic wire 115, the wire 117 and the elastic coating 118.

Further, the hook 11 may further include a transition piece 1162 connected with the elastic wire 115 such that the elastic wire 115 is connected with the battery compartment 1161 through the transition piece 1162. For example: the transition piece 1162 and the elastic metal wire 115 are formed by a metal insert injection molding process, the battery compartment 1161 is arranged into a cylindrical structure with one end open so as to be convenient for placing structural components such as the battery 16, and the transition piece 1162 is buckled with the open end of the battery compartment 1161. Of course, in other embodiments, the transition piece 1162 and the battery compartment 1161 may be integrally formed, and an end of the battery compartment 1161 remote from the transition piece 1162 may be provided as an opening and may be sealed by a cover plate. Wherein the cross-sectional area of the transition piece 1162 may gradually increase along the length of the hook 11 and in a direction away from the connecting portion 12. Accordingly, the elastomeric coating 118 may also coat the transition piece 1162. Wherein the contoured recess may be formed in the transition piece 1162 and manifest through the elastomeric coating 118. In other words, the transition piece 1162 may be provided with a profiling recess corresponding to the profile of the rear side of the ear on the side facing the ear, and on a reference section provided along the central axis of the battery compartment 1161, the radius of curvature of the profiling recess may be smaller than the radius of curvature of the other side of the transition piece 1162 facing away from the ear, that is, the degree of curvature of the profiling recess is greater, so that the transition portion 114 avoids the bulge of the rear side of the ear.

Based on the above-described related description, and with reference to fig. 28, for the hook 11, the elastic portion 112 may correspond to a portion of the elastic wire 115 exposed to the connection portion 12 and the transition piece 1162, and may mainly include the elastic coating 118 and the elastic wire 115 and the wire 117 coated therewith; the battery portion 113 may correspond to a portion of the battery compartment 1161 and may mainly include the battery compartment 1161 and the battery 16 therein; the transition 114 may correspond to a portion of the transition piece 1162 and may include primarily the elastomeric coating 118 and the transition piece 1162 that it coats. In other words, the length of the elastic portion 112 may be the length of the portion of the elastic wire 115 exposed from the connecting portion 12 and the transition piece 1162 and covered by the elastic covering 118.

Further, the earphone 10 may further include a processing circuit and a detecting member 1163 coupled to the processing circuit, the detecting member 1163 is configured to detect whether the hook 11 is hung between the rear side of the ear and the head, and the processing circuit is configured to determine whether the earphone 10 is in a wearing state according to a detection result of the detecting member 1163. The processing circuit may be integrated on the motherboard 15, and the detecting element 1163 may be any one or a combination of capacitive, inductive, and resistive sensing elements disposed on the ear-facing side of the hook 11 (e.g., the transition element 1162 or the battery compartment 1161). By way of example, the detector 1163 may be a capacitive sensing element and may be disposed in a contoured recess of the transition piece 1162.

In some application scenarios, when the detecting piece 1163 detects that the earphone 10 is in the wearing state, the processing circuit generates a first control signal for controlling the earphone 10 to switch to the playing state; when the detecting piece 1163 does not detect that the earphone 10 is in the wearing state, the processing circuit generates a second control signal for controlling the earphone 10 to switch to the suspended state. In this way, not only can the power of the earphone 10 be saved, but also the interactivity of the earphone 10 can be increased.

In other applications, the headset 10 may include a first headset and a second headset disposed in a pair and communicatively coupled, such as the first headset and the second headset being worn by the user's left and right ears, respectively, each of which is provided with a detecting member 1163. The processing circuit determines and selects one of the first earphone and the second earphone as a main earphone in communication connection with the audio source device (such as a mobile phone, a tablet electric energy, a smart watch, etc.) according to the detection result of the detecting piece 1163. Thus, when the user uses two earphones at the same time, one earphone can be selected as a master earphone to be in communication connection with the audio source device according to a given rule, and the other earphone can be selected as a slave earphone to be in communication connection with the master earphone; when the user uses only one of the two headphones, the headphone used is the master headphone.

Referring to fig. 16 and 18, the side of the holding portion 13 facing the ear may include a first region 13A and a second region 13B, and the second region 13B may be further away from the connecting portion 12 than the first region 13A, that is, the second region 13B may be located at a free end of the holding portion 13 away from the connecting portion 12. Based on the above-described related description, the section of the hook portion 11 near the connecting portion 12, such as the elastic portion 112, may be partially overlapped with the second region 13B in the orthographic projection in the above thickness direction. Further, the first region 13A is provided with an acoustic port 1311, and the second region 13B may be raised toward the ear as compared to the first region 13A and used to contact the ear to allow the acoustic port 1311 to be spaced from the ear in the worn state. In short, the holding portion 13 may be provided in a convex hull structure at its free end. In this way, since the movement 14 can generate the sound transmitted to the ear through the sound outlet 1311, the above convex hull structure can avoid the sound generated by the movement 14 from weakening or even failing to output due to the ear blocking the sound outlet 1311. As an example, in the above thickness direction, the maximum protrusion height of the second region 13B with respect to the first region 13A may be 1mm or more, and a smooth transition may be made between the two regions. It should be noted that: if the sound outlet 1311 is spaced from the ear only for the purpose of wearing, the second region 13B protruding toward the ear as compared to the first region 13A may also be other regions of the holding portion 13, such as a region between the sound outlet 1311 and the connecting portion 12. Further, since the concha cavity and the concha boat have a certain depth and communicate with the earholes, the orthographic projection of the sound hole 1311 on the ear in the above thickness direction can at least partially fall within the concha cavity and/or the concha boat. As an example, the holding portion 13 may be located on the side of the earhole near the top of the user's head and in contact with the antihelix; the orthographic projection of the sound outlet 1311 onto the ear in the thickness direction described above may then at least partially fall within the concha boat.

Further, referring to fig. 16 and 33, the holding portion 13 may form a front cavity 200 and a rear cavity 300 of the earphone 10 on opposite sides of the movement 14, respectively, and the sound outlet 1311 communicates with the front cavity 200 and outputs sound to the ear. The holding portion 13 may be further provided with a pressure release hole 1312 communicating with the rear chamber 300, the pressure release hole 1312 being further away from the ear hole than the sound outlet hole 1311. In this manner, the relief holes 1312 allow air to freely enter and exit the rear chamber 300, so that the variation in air pressure in the front chamber 200 can be prevented from being blocked by the rear chamber 300 as much as possible, thereby improving the quality of sound output to the ear through the sound outlet holes 1311. Furthermore, since the phases of the sound outputted to the outside of the earphone 10 through the sound outlet 1311 and the pressure release 1312 are opposite, the sound is cancelled in the far-field opposite phase away from the ear, that is, a "sound dipole" is formed to reduce the leakage. Wherein, the included angle between the connection line between the center of the pressure relief hole 1312 and the center of the sound outlet hole 1313 and the thickness direction may be between 0 ° and 50 °; preferably, the aforementioned angle may be between 0 ° and 40 °. Further, the holding part 13 may be further provided with a sound tuning hole 1313 communicating with the rear cavity 300, and the sound tuning hole 1313 may be used to destroy a high-voltage region of the sound field in the rear cavity 300, so that the wavelength of the standing wave in the rear cavity 300 becomes short, and further so that the resonance frequency of the sound outputted to the outside of the earphone 10 through the pressure release hole 1312 is as high as possible, for example, greater than 4kHz, to reduce the leakage sound. Preferably, the sound-regulating hole 1313 and the pressure-releasing hole 1312 may be located on opposite sides of the movement 14, respectively, for example, oppositely disposed in the height direction as described above, in order to destroy the high-pressure region of the sound field in the rear chamber 300 to the greatest extent. The opening direction of the pressure release hole 1312 may face the top of the head of the user, for example, the angle between the opening direction and the vertical axis is between 0 ° and 10 °, so as to allow the pressure release hole 1312 to be farther away from the ear hole than the sound adjustment hole 1313, so that the user is difficult to hear the sound output to the outside of the earphone 10 through the pressure release hole 1312, and the sound is reduced. Based on this, the pressure relief hole 1312 may have a first center in the above-mentioned length direction, the sound adjusting hole 1313 may have a second center in the above-mentioned length direction, and the second center may be further away from the center of the sound outlet hole 1311 than the first center in the above-mentioned length direction, so as to pull the distance between the sound adjusting hole 1313 and the sound outlet hole 1311 as large as possible, thereby reducing the cancellation of the phase opposition between the sound output to the outside of the earphone 10 via the sound adjusting hole 1313 and the sound transmitted to the ear via the sound outlet hole 1311. In other words, the orthographic projection of the sound-adjusting hole 1313 in the height direction and the orthographic projection of the second region 13B in the thickness direction may at least partially intersect so as to be as far away from the sound-emitting hole 1311 as possible.

In short, the user wears the earphone 10 to mainly listen to the sound transmitted to the earhole via the sound outlet port 1311, and other acoustic ports such as the pressure release port 1312 and the sound adjustment port 1313 are mainly used to make the sound as audible as possible with the sound quality of the bass down and treble through. Therefore, the ratio between the dimension (e.g., L1 in fig. 18) of the outlet end of the pressure release hole 1312 in the above-mentioned length direction and the dimension (e.g., L2 in fig. 31) of the end of the rear cavity 300 close to the pressure release hole 1312 in the above-mentioned length direction may be greater than or equal to 0.9, and the dimensional relationship between the two in the above-mentioned thickness direction may be the same or similar, so that the rear cavity 300 communicates with the exterior of the earphone 10 as large as possible to minimize the blocking of the front cavity 200 by the rear cavity 300, and also the resonance frequency of the sound output to the exterior of the earphone 10 through the pressure release hole 1312 may be shifted to a high frequency as much as possible.

It should be noted that: because the structure parts such as core shell 131 have certain thickness for the play sound hole 1311, pressure release hole 1312 and the hole such as accent sound hole 1312 of seting up on the core shell 131 have certain degree of depth, and then for the accommodation chamber that core shell 131 formed, the hole have the entrance end that is close to aforementioned accommodation chamber and keep away from the exit end of aforementioned accommodation chamber. The partition 137 and the communication holes formed therein are similar to those mentioned later, and will not be described again.

Referring to fig. 16 to 18, in a natural state and viewed from the top of the head of the user in the wearing state of the earphone 10, for example, in the height direction, the holding portion 13 is disposed at least apart from a section of the hook portion 11 near the connecting portion 12 in the thickness direction, and the connecting portion 12 may be disposed in an arc shape and connected between the holding portion 13 and the hook portion 11. In this way, the connecting portion 12 can keep the holding portion 13 located on the front side of the ear and the hook portion 11 located on the rear side of the ear spaced from each other in the above thickness direction at least in the section near the connecting portion 12, so that the earphone 10 can bypass the upper auricle and the tissues in the vicinity thereof in the wearing state, and discomfort caused by the earphone 10 excessively gripping the auricle in the vicinity of the upper auricle can be avoided.

As an example, the connecting portion 12 and the holding portion 13 may be connected in the above-described length direction. Wherein at least part of the connecting portion 12 may extend away from the free end of the holding portion 13 in the direction from one end of the connecting holding portion 13 to the other end of the connecting hook portion 11 along the above-mentioned length direction and the above-mentioned height direction at the same time, so as to be forwardly convex toward the user's face side as a whole, so that the difference in height of the hook portion 11 and the holding portion 13 in the above-mentioned height direction can be eliminated in a smooth transition manner. Of course, at least part of the connecting portion 12 may extend away from the free end of the holding portion 13 in the above-described longitudinal direction in a direction from one end of the connecting holding portion 13 to the other end of the connecting hook portion 11. Furthermore, the connecting portion 12 itself or its section close to the connecting portion 12 together with the hook portion 11 may also extend away from the free end of the holding portion 13 in the above thickness direction, so that the holding portion 13 and the section close to the connecting portion 12 of the hook portion 11 are arranged at intervals in the above thickness direction. In some embodiments, in combination with fig. 23 and 24, the connecting portion 12 may further approach the free end of the holding portion 13 along the above-mentioned length direction in a direction from one end of the connecting holding portion 13 to the other end of the connecting hook portion 11 while extending away from the free end of the holding portion 13 along the above-mentioned height direction, that is, the connecting portion 12 itself forms a detour extending structure in three-dimensional space. In other embodiments, referring to fig. 28 and 29, the connecting portion 12 may extend away from the free end of the holding portion 13 only along the above-mentioned length direction and the above-mentioned height direction in a direction from one end of the connecting holding portion 13 to the other end of the connecting hook portion 11, that is, form a front half of the circuitous extending structure, and the section (e.g., the elastic portion 112) of the hook portion 11 adjacent to the connecting portion 12 may continue to be adjacent to the free end of the holding portion 13 along the above-mentioned length direction in a direction away from the connecting portion 12 and extend away from the free end of the holding portion 13 along the above-mentioned height direction, that is, form a rear half of the circuitous extending structure, and then cooperate to form the circuitous extending structure in three dimensions. Of course, in other embodiments, the circuitous extension structure may have only a front half or a rear half.

In some embodiments, the sections of the hook portion 11 near the connecting portion 12 (e.g., the elastic portion 112), the connecting portion 12, and the edge of the holding portion 13 on the ear-facing side may be provided in a roundabout arc-like shape. Wherein a minimum width W1 of the arc shape in the thickness direction at a position 3mm from a detour point (e.g., CP 2) of the arc shape in a reference direction passing through the detour point and parallel to the length direction may be between 1mm and 5mm.

In other embodiments, in the above thickness direction, the minimum distance between the section of the hook portion 11 near the connecting portion 12, such as the elastic portion 112, and the holding portion 13 may be greater than 0 and less than or equal to 5mm.

In other still other embodiments, in the thickness direction described above, the distance W2 between the center of the sound outlet 1311 (denoted as O0) and the section of the hook 11 near the connecting portion 12 (e.g., the elastic portion 112) may be between 3mm and 6 mm.

In other embodiments, the distance W3 between the second region 13B and the section of the hook 11 near the connecting portion 12 (e.g., the elastic portion 112) may be between 1mm and 5mm in the thickness direction described above.

Referring to fig. 20 and 18, the holding portion 13 may include a deck housing 131 connected to the connection portion 12, and the deck 14, the main board 15, and other structural members may be fixed in the accommodating space of the deck housing 131. As an example, the deck housing 131 may include a first housing 1314 and a second housing 1315 that are disposed opposite to each other in the thickness direction described above, the first housing 1314 being closer to the ear than the second housing 1315. Of course, the first casing 1314 and the second casing 1315 may be disposed opposite to each other in the vibration direction of the movement 14, which may be parallel to the thickness direction described above. Specifically, the movement 14 may be fixed to the side of the first casing 1314 facing the second casing 1315 to enclose the front cavity 200, and the second casing 1315 may be engaged with the first casing 1314 and enclose the movement 14 to form the rear cavity 300. Accordingly, the sound outlet 1311 may be provided in the first housing 1314, e.g., on a side facing the ear; the pressure relief hole 1312 and the sound adjusting hole 1313 may be disposed on two opposite sides of the second housing 1315, for example, opposite to each other in the height direction. Based on the above-described related description, the ratio between the dimension of the outlet end of the pressure release hole 1312 in the above-described length direction and the dimension of the second housing 1315 in the above-described length direction may be greater than or equal to 0.55; preferably, the aforementioned ratio is between 0.8 and 1 so that the rear cavity 300 communicates with the outside of the earphone 10 as large area as possible while taking into consideration the structural strength of the second housing 1315.

In some embodiments, in conjunction with fig. 20, the connecting portion 12 may include a third housing 122 connected to an end of the resilient wire 115 remote from the battery compartment 1161, such as both formed by a metal insert injection molding process. Wherein the dimensions of the second housing 1315 and the third housing 122 in the length direction are smaller than those of the first housing 1314, and the dimensions of the second housing 1315 may be much larger than those of the third housing 122. Thus, the second housing 1315 is engaged with the first housing 1314, and the orthographic projection in the thickness direction overlaps the first housing 1314, and the third housing 122 is engaged with a portion of the first housing 1314 located at the periphery of the orthographic projection of the second housing 1315. In short, the third housing 122 may be snapped with the second housing 1315 on the same side as the first housing 1314, with a majority of the first housing 1314 serving as a housing for the retention portion 13 and a minority serving as a housing for the connection portion 12. In a specific embodiment, the ratio between the largest dimension of the third housing 122 in the length direction and the dimension of the second housing 1315 in the length direction may be less than or equal to 0.4.

Based on the above-described related description, and referring to fig. 23 and 24, in a natural state, and viewed from the top side of the user's head in a worn state of the earphone 10, for example, viewed in the above-described height direction, the first housing 1314 and the elastic wire 115 may be disposed at intervals in the above-described thickness direction, and the third housing 122 may be disposed in an arc shape and connect the first housing 1314 and the elastic wire 115 to allow the holding portion 13 located at the front side of the ear and the hook portion 11 located at the rear side of the ear to be spaced from each other in the above-described thickness direction at least in a section near the connecting portion 12. Further, the third housing 122 may be extended away from the second housing 1315 in the above-described length direction and the above-described height direction at the same time in a direction from one end of the connection first housing 1314 to the other end of the connection elastic wire 115, and then be close to the second housing 1315 in the above-described length direction and extended away from the second housing 1315 in the above-described height direction, so as to allow the height difference between the hook 11 and the holding 13 in the above-described height direction to be eliminated in a smooth transition manner. At this time, the second location point may fall on the connecting portion 12, and the starting point of the first section may be further away from the connecting portion 12 than the second location point. Wherein, the portion of the first housing 1314 that doubles as the housing of the connecting portion 12 may have the same or similar variation trend with the third housing 122. Thus, the connecting portion 12 itself can form a meandering structure in three-dimensional space. As such, referring to fig. 24, a parting line (denoted PL 1) is formed between the third housing 122 and the first housing 1314, and the parting line and the first housing 1314 are formed separately and then fastened together, so as to solve the problem that the housing of the connecting portion 12 is difficult to be ejected due to the structure of roundabout extension in the three-dimensional space, thereby increasing production efficiency and reducing production cost.

In some embodiments, in conjunction with fig. 27, the third housing 122 is integrally formed with the first housing 1314 and is formed with a socket. Further, the connection portion 12 may further include a connector 123, one end of the connector 123 may be connected to the hook portion 11, and the other end may be fixed in the socket in a plugging manner, so as to achieve connection between the hook portion 11 and the connection portion 12. Specifically, the end of the connector 123 remote from the third housing 122 may be connected to the other end of the elastic wire 115 remote from the battery compartment 1161, for example, they are molded by a metal insert injection molding process. Further, the connecting portion 12 may further include a locking member 124, and the portion of the connector 123 inserted into the third housing 122 may be locked with the third housing 122 by the locking member 124, which is convenient for assembly and can increase reliability of assembly. Wherein the locking piece 1224 may be a wedge having a cylindrical shape or a sheet shape.

Based on the above-described related description, and referring to fig. 28 and 29, the third housing 122 may extend away from the second housing 1315 in the above-described length direction and the above-described height direction simultaneously in a direction from one end of the connection first housing 1314 to the other end of the connection connector 123, and a section of the elastic wire 115 exposed to the connector 123 and close to the connector 123 may further extend away from the second housing 1315 in the above-described length direction and simultaneously away from the second housing 1315 in the above-described height direction. Accordingly, the third housing 122 may also extend away from the second housing 1315 in the thickness direction, and the section of the elastic wire 115 exposed to the connector 123 and close to the connector 123 may continue to extend away from the second housing 1315 in the thickness direction. At this time, the second position point may be located at the boundary between the hook portion 11 and the connecting portion 12, and the start point of the first section may be overlapped with the second position point. The portion of the first housing 1314 that serves as the housing of the connecting portion 12 and the portion of the connector 123 that is exposed to the third housing 122 may have the same or similar variation trend with the third housing 122. Thus, to allow the connecting portion 12 to form only the front half of the above-mentioned roundabout extending structure, the hook portion 11 continues to form the rear half of the roundabout extending structure, thereby allowing the two to cooperate to form the roundabout extending structure in three dimensions. As such, referring to fig. 28, a parting line (PL 2) is formed between the connector 123 and the third housing 122 and between the connector 123 and the first housing 1314, and the two are separately formed and then inserted into each other, so as to solve the problem that the housing of the connecting portion 12 is difficult to be ejected due to the structure extending in a roundabout manner in the three-dimensional space, thereby increasing the production efficiency and reducing the production cost.

It should be noted that: the housing of the connecting portion 12 and the housing of the holding portion 13 may be divided into two housings having substantially equal orthographic projection areas along the thickness direction, for example, the housing of the connecting portion 12 may be divided into two housings or only one housing may be divided into two housings along the detour point and the other housing may be combined by the elastic wire 115, and the housings may be assembled accordingly.

Based on the above-mentioned related description, and with reference to fig. 20 and 18, since the holding portion 13 needs to be in contact with the front side of the ear portion, especially the free end of the holding portion 13 also needs to form a contact point (e.g., CP 0) with, for example, the antihelix of the ear portion. Based on this, the side of the deck housing 131 facing the ear may be provided with a flexible coating structure 132 and at least the sound outlet 1311 is avoided, e.g. the flexible coating structure 132 is provided with a through hole corresponding to the sound outlet 1311. The shore hardness of the flexible coating structure 132 is smaller than the shore hardness of the cartridge housing 131, so that the holding portion 13 contacts the ear through the flexible coating structure 132, that is, the flexible coating structure 132 is elastically supported between the cartridge housing 131 and the ear, thereby improving wearing comfort. Further, based on the division and splicing manner of the housings of the connection portion 12 and the holding portion 13, in order to increase the appearance quality of the earphone 10, the flexible covering structure 132 may be directly attached to the first housing 1314 and the third housing 122 by injection molding, or may be covered by gluing. Wherein, since the hook portion 11 may be provided with the elastic coating 118, the elastic coating 118 and the flexible coating structure 132 may be formed by one injection molding process, or may be formed by two injection molding processes respectively; the materials of the two can be the same or different. Based on this, the present application is primarily directed to the portion of the flexible covering structure 132 and the elastic covering 118 that is in contact with the skin of the user, unless specifically indicated.

In some embodiments, the flexible covering structure 132 may be at least partially disposed on a side of the holding portion 13 away from the free end of the connecting portion 12 and toward the ear, i.e., the second region 13B. Accordingly, the front projection of the elastic portion 112 on the reference plane (for example, the plane in which YZ is located) and the front projection of the flexible covering structure 132 on the reference plane may partially overlap. Further, the thickness of the flexible covering structure 132 may be designed differently, for example, the flexible covering structure 132 corresponding to the second region 13B is relatively thicker, so that the free end of the holding portion 13 can be protruded toward the ear, and has good flexibility. Of course, if the second region 13B is projected toward the ear portion only as compared with the first region 13A, the first housing 1314 may be designed differently in thickness toward the ear portion side. Based on this, the first housing 1314 may also include a first region and a second region to correspond one-to-one with the first region 13A and the second region 13B of the holding portion 13 toward the ear side, respectively.

Further, the side of the flexible covering structure 132 facing the movement housing 131 may be concavely provided with at least one blind hole 1321 spaced from each other, and the blind hole 1321 may be mainly used for providing a deformation space for the flexible covering structure 132, so as to allow the flexible covering structure 132 to be stressed to generate more deformation in the wearing state, thereby further improving the wearing comfort. In some embodiments, the number of blind holes 1321 may be multiple, such as at least two, which may be spaced apart from each other to form a bone site to support the structure itself, thereby providing both elastic deformation and structural strength. Of course, in other embodiments, the number of blind holes 1321 may be only one, and the elastic deformation and the structural strength can be also achieved by controlling the elastic modulus, the thickness of the flexible covering structure 132, and the size of the blind holes 1321. In order to make the flexible covering structure 132 have the blind hole 1321, the cartridge housing 131 may specifically be a portion of the first housing 1314 corresponding to the second area 13B, and through holes 13141 corresponding to and communicating with the blind hole 1321 one by one may be provided, where the through holes 13141 are used for inserting a molding core of the flexible covering structure 132. At this time, the plurality of through holes 13141 may make the portion of the first housing 1314 corresponding to the second region 13B be disposed in a honeycomb shape or a mesh shape, so as to compromise the structural strength of the first housing 1314 in the region and the support of the flexible covering structure 132. Further, the outside of the first housing 1314 may also be provided with protrusions surrounding the through-holes 13141 along a honeycomb or mesh-like structure, which protrusions may be embedded in the flexible covering structure 132; and/or, the flexible covering structure 132 is partially embedded in the through hole 13141, so as to increase the bonding area of the flexible covering structure 132 between the second region 13B and the first housing 1314, thereby increasing the bonding strength therebetween. Based on this, the first shell 1314 may be left with corresponding through holes 13141 during the molding process, and a molding core of the flexible cladding structure 132 may be inserted into the through holes 13141 after the molding is completed, wherein the molding core may protrude from the first shell 1314, and the maximum protrusion height may depend on the actual requirements of the convex hull structure; the flexible covering structure 132 may then be molded directly onto the first housing 1314 by an injection molding process, followed by extraction of the molding core. Accordingly, the holding portion 13 may further include a cover plate 1316 disposed in the cartridge case 131, for example, the cover plate 1316 is fixedly disposed on an inner side of the first case 1314 facing away from the flexible covering structure 132 to close the through hole 13141, thereby allowing the first case 1314 and the cover plate 1316 to enclose the front cavity 200 with the cartridge 14. Wherein the cover plate 1316 may be supported on a honeycomb or grid-like structure of the first housing 1314.

As an example, a first flange 13142 may be disposed on an inner wall of the first housing 1314 facing away from the flexible covering structure 132, a second flange 13161 may be disposed on an inner wall of the cover plate 1316 facing away from the flexible covering structure 132, and two ends of the second flange 13161 and two ends of the first flange 13142 may respectively extend oppositely to form an annular flange. At this point, cartridge 14 may rest on the annular flange, thereby forming front chamber 200. The first housing 1314 may be provided with a countersink in the second region 13B, and the cover plate 1316 may be inserted into the countersink to allow the inner wall surface of the cover plate 1316 to be flush with the inner wall surface of the first housing 1314 facing away from the flexible covering structure 132, so that the inner cavity surface of the front cavity 200 is as flat as possible. Further, an adhesive dispensing groove may be further disposed on an inner wall surface of the first housing 1314 facing away from the flexible covering structure 132, and the adhesive dispensing groove may be located at an edge of the foregoing sink groove and surround the plurality of through holes 13141, and the cover plate 1316 may be glued to the first housing 1314 through the adhesive in the adhesive dispensing groove. In short, the first flange 13142 and the dispensing slot are both disposed on the inner side of the first housing 1314 facing away from the flexible covering structure 132, but the former may correspond primarily to the first region 13A and the latter may correspond primarily to the second region 13B.

It should be noted that: in other embodiments, such as those where the flexible cover 132 does not have a blind hole 1321, or in other embodiments, such as those where the flexible cover 132 is molded separately and then glued to the cartridge housing 131, for example, the first housing 1314 may not have a through hole 13141 and the corresponding cover 1316 may not have been provided. At this time, first flange 13142 may be a complete annular flange on which cartridge 14 is supported to form front chamber 200.

In other embodiments, and in conjunction with fig. 27, flexible covering structure 132 may include an inner flexible body 1322 disposed on cartridge housing 131 and an outer flexible body 1323 covering at least inner flexible body 1322, inner flexible body 1322 may be disposed in second region 13B, outer flexible body 1323 may cover inner flexible body 1322, first housing 1314, third housing 122, and the like. At this time, the flexible covering structure 132 is in contact with the ear portion through the outer flexible body 1323. In short, the flexible covering structure 132 may also be provided as a double layer structure in order to adjust the thickness and softness of the portion of the flexible covering structure 132 corresponding to the second region 13B. Accordingly, the front projection of the elastic portion 112 on the reference plane (e.g., the plane in which YZ is located) may partially coincide with the front projection of the inner flexible body 1322 on the reference plane. Similarly, the sound outlet 1311 may be located between the inner flexible body 1322 and the connecting portion 12. Further, the inner flexible body 1322 may also protrude toward the ear, i.e., protrude from the cartridge housing 131 (specifically, the first housing 1314), so that the flexible covering structure 132 forms the convex hull structure.

Illustratively, blind bore 1321 may be formed in inner flexible body 1322, which may function and be shaped in a manner similar or identical to that described above and will not be described in detail herein. The number of blind holes 1321 may be plural, such that the inner flexible body 1322 has bone sites disposed in a honeycomb or grid shape, or plural bone sites disposed at intervals. Of course, in other embodiments, the blind hole 1321 may be further formed through the inner flexible body 1322 as a through hole. Similarly, the gap between the bone sites, i.e., blind hole 1321, is used to provide deformation space for the flexible covering structure 132. In one embodiment, the inner flexible body 1322 and the outer flexible body 1323 may be made of 0 degree silica gel.

As an example, the shore hardness of inner flexible body 1322 may be less than the shore hardness of outer flexible body 1323 to allow flexible covering structure 132 to be more flexible corresponding to the portion of second region 13B. Wherein, the surface of the outer flexible body 1323 facing the cartridge housing 131 may be concavely provided with a blind hole 1321, and the inner flexible body 1322 may be disposed in the blind hole 1321 and contact with the outer flexible body 1323. In other words, blind bore 1321 may be provided in outer flexible body 1323 to accommodate more flexible inner flexible body 1322. Specifically, a portion of the first housing 1314 corresponding to the second region 13B may be provided with a through hole 13141, and the through hole 13141 is used for insertion of a molding core of the outer flexible body 1323. At this time, the outer flexible body 1323 may be formed on the first housing 1314 through an injection molding process, and the molding core is withdrawn after the outer flexible body 1323 is molded, so that the outer flexible body 1323 forms a corresponding blind hole 1321, thereby forming a receiving area, and the inner flexible body 1322 may be disposed in the blind hole 1321 through the through hole 13141, that is, disposed in the receiving area, and then the through hole 13141 may be closed by the cover plate 1316. The side of the cover plate 1316 facing the inner flexible body 1322 may be partially embedded in the through hole 13141 to increase the tightness of the aforementioned accommodation area. Further, the number of blind holes 1321 may be one, and the number of through holes 13141 may be one. At this time, in case that the opening area of the through hole 13141 is large, the cover plate 1316 may extend to partially overlap with the first housing 1314 at the first region 13A to increase the supporting area of the first housing 1314 to the cover plate 1316. Wherein, the cover plate 1316 may be provided with a communication hole 13162 communicating the sound outlet 1311 with the front cavity 200 to avoid shielding the sound outlet 1311. In an embodiment, the outer flexible body 1323 may be made of 30-50 degree silica gel, and the inner flexible body 1322 may be made of 0 degree silica gel, and may be formed in the accommodating area by a dispensing process. In other embodiments, the outer flexible body 1323 may be made of 30-50 degree silica gel, and the inner flexible body 1322 may be made of 0-10 degree silica gel, and may be formed into a block shape in advance to be filled in the accommodating area. Of course, in the case where the inner flexible body 1322 is capable of withstanding the impact forces during the molding of the outer flexible body 1323, the first housing 1314 may not be provided with the through hole 13141, and the corresponding cover plate 1316 may not be provided.

Based on the above detailed description, the structural members of the first housing 1314, the outer flexible body 1323, the inner flexible body 1322, and the cover 1316 may form a housing assembly, i.e., be modular, to facilitate assembly.

Referring to fig. 16, the earphone 10 may further include a microphone 125 and a microphone 133 disposed at the holding portion 13 and/or the connection portion 12, and the two

microphones

125, 133 may be electrically connected with the main board 15. The distance between the microphone 125 and the microphone 133 in the longitudinal direction may be greater than the distance between the microphone 125 and the microphone 133 in the height direction. In this way, in order to make the distance between the two

microphones

125, 133 as large as possible in the case of a relatively fixed size of the earphone 10, it is possible to both avoid interference between the two

microphones

125, 133 and to increase the sound pickup effect and/or the noise reduction effect of the earphone 10. Further, the line between the front projection of microphone 125 on the reference plane (e.g., the plane in which YZ lies) and the front projection of microphone 133 on the reference plane may pass through the front projection of cartridge 14 on the reference plane. In other words, if cartridge 14 is disposed in a rectangular shape on the above-described reference plane, then two

microphones

125, 133 may be disposed generally along a diagonal of cartridge 14.

In some embodiments, the microphone 125 may be disposed at the connection portion 12, and the microphone 133 may be disposed at a free end of the holding portion 13 remote from the connection portion 12. At this time, the microphone 125 may be closer to the user's mouth than the microphone 133, so that it is mainly used to pick up the user's voice. The earphone 10 may further include a processing circuit, where the processing circuit may be integrated on the main board 15, and may use the microphone 125 as a main microphone, use the microphone 133 as an auxiliary microphone, and perform noise reduction processing on the sound signal collected by the main microphone through the sound signal collected by the auxiliary microphone, so as to increase the pickup effect. Of course, at least one of the two

microphones

125, 133 may be used to perform noise reduction processing on sound output from the earphone 10 to the ear, or only one microphone may be provided to serve as sound pickup or noise reduction.

As an example, the microphone 125 may be disposed between the third housing 122 and the first housing 1314, and the microphone 133 may be disposed between the second housing 1315 and the first housing 1314. Wherein, a side of the third housing 122 and the second housing 1315 facing away from the first housing 1314 may be provided with through holes for the microphone to collect sound, respectively.

In other embodiments, the earphone 10 may further include a microphone 134 detachably connected to the holding portion 13 or the free end of the hook portion 11 away from the connecting portion 12 (i.e., the battery portion 113), and the free end of the microphone 134 may be provided with a microphone 1341 electrically connected to the main board 15. In this manner, microphone 1341 may be positioned closer to the user's mouth than microphone 125 and microphone 133, which may be advantageous for increased pickup. Here, the present application exemplifies the detachable connection of the stick microphone 134 and the holding portion 13. For example, the main rod 1342 of the microphone 134 is detachably connected to the second housing 1315 by a snap fit or magnetic method, and for example, the main rod 1342 is detachably connected to the second housing 1315 by a type-C plug-in method, so as to shorten the wiring distance between the microphone 1341 and the main board 15.

Further, in addition to microphone 1341 on the wand 134, the earphone 10 may be provided with other microphones, such as microphone 125 and/or microphone 133. The processing circuit may use the microphone 1341 as a main microphone and at least one of the microphone 133 and the microphone 125 as an auxiliary microphone when the microphone 134 is connected to the holding portion 13, and may perform noise reduction processing on the sound signal collected by the main microphone by the sound signal collected by the auxiliary microphone, thereby increasing the sound pickup effect. Accordingly, the processing circuit may switch the microphone 133 and the microphone 125 to the enabled state when the wand microphone 134 is separated from the holding portion 13, and use one of the microphone 133 and the microphone 125 as the primary microphone and the other as the secondary microphone. Of course, the processing circuit may also switch at least one of the microphone 133 and the microphone 125 to a disabled state when the wand 134 is connected to the holder 13 to save power while also taking care of pick-up and/or noise reduction.

Referring to fig. 16 and 17, the earphone 10 may further include a first charging electrode 126 provided at the holding portion 13 or the connection portion 12 and a second charging electrode 1164 provided at the hook portion 11, one of the first charging electrode 126 and the second charging electrode 1164 serving as a charging positive electrode, and the other one serving as a charging negative electrode. Here, the present application exemplifies that the first charging electrode 126 is used as a charging positive electrode and the second charging electrode 1164 is used as a charging negative electrode. In this way, the earphone 10 can not only be charged by two charging electrodes, but also greatly increase the shortest distance between the two charging electrodes, which is beneficial to preventing short circuit between the charging electrodes caused by sweat, water drops, dust, etc. Of course, in the case where the short-circuit prevention is satisfied, both the charging electrodes may be provided at one of the hook portion 11, the connecting portion 12, and the holding portion 13. Further, the two charging electrode arrangements may be arranged to be invisible in the worn state, e.g. both facing the skin of the user, to give a compromise to the appearance quality of the headset 10.

As an example, the first charging electrode 126 may be disposed at the connection part 12, and the second charging electrode 1164 may be disposed at the battery part 116. Specifically, the first charging electrode 126 may be disposed at least partially at the periphery of the second housing 1315, for example, between the third housing 122 and the first housing 1314. Accordingly, the second charging electrode 1164 may be disposed at the battery compartment 1161, for example, at a bottom of the battery compartment 1161 remote from the open end thereof. The first charging electrode 126 may be disposed in a column shape, and the second charging electrode 1164 may be disposed in a strip shape, and a length direction thereof may extend along a circumferential direction of the battery compartment 1161. Further, the first housing 1314 and the battery compartment 1161 may be provided with through holes allowing the charge electrode to be exposed, respectively, so that the charge electrode is in contact with the output electrode on the charging cartridge. Therefore, compared with the columnar electrode, the strip electrode has larger contact area with the output electrode, so that the reliability of the charging electrode can be improved.

It should be noted that: the first charging electrode 126 may be provided in plural, for example, two, at intervals at the connection portion 12 so that one is still usable after the other is disabled. Further, a magnetic attraction member such as a magnet may be provided near each of the two charging electrodes to allow the earphone 10 to be in good contact with the output electrode on the battery case by magnetic attraction. Wherein the relative position of the output electrode thereon can be adjusted for the charging cartridge as the charging electrode on the earphone 10 changes.

Referring to fig. 21, since the second housing 1315 faces away from the ear compared to the first housing 1314, an interaction component such as a physical key, a display screen, a touch circuit board, etc. may be provided on the second housing 1315 to facilitate user interaction with the earphone 10.

As an example, the second housing 1315 may include a bottom wall 13151 disposed opposite the first housing 1314 and a side wall 13152 connected to the bottom wall 13151, the side wall 13152 extending toward the first housing 1314. The side of the bottom wall 13151 facing the first housing 1314 is provided with a flexible touch circuit board 135 electrically connected to the motherboard 15, and the flexible touch circuit board 135 may be any of capacitive type, resistive type, pressure-sensitive type, and the like, which is not limited herein. Thus, the earphone 10 can be interacted without arranging additional through holes on the core shell 131, and waterproof and dustproof performances are further improved. Specifically, the flexible touch circuit board 135 may include a touch portion 1351 for receiving a touch operation and an electrical connection portion 1352 for connecting with the main board 15, for example, the flexible touch circuit board 135 may be fastened with the main board 15 by means of a BTB connector. The area of the touch portion 1351 relative to the bottom wall 13151 may be greater than or equal to 70%. Based on the above description, a side of the sidewall 13152 adjacent to the third housing 122 may be provided in an open manner to facilitate the splicing of the second housing 1315 to the third housing 122. Wherein the pressure relief hole 1312 and the sound tuning hole 1313 may be disposed on the side wall 13152, and may be respectively located on opposite sides of the open end.

Further, the bottom wall 13151 may be provided with a sink 13153, and the touch portion 1351 may be attached to the bottom of the sink 13153. In this way, the second housing 1315 is correspondingly thinned locally to increase the sensitivity of the flexible touch circuit board 135. Moreover, the main board 15 may be connected to the second housing 1315, and the flexible touch circuit board 135 may be pressed against the bottom wall 13151 by an elastic pad 1353, so that the touch portion 1351 may be tightly attached to the bottom wall 13151, and the touch portion 1351 may be prevented from being crushed. The depth of the sink 13153 may be greater than or equal to the thickness of the touch portion 1351 and less than the sum of the thicknesses of the touch portion 1351 and the elastic pad 1353 to increase the holding effect.

In some embodiments, the bottom wall 13151 may be provided with a plurality of, for example, three, heat-melting columns 13154 located at the periphery of the sink 13153 and extending toward the motherboard 15, and a line of orthographic projection of at least two of the plurality of heat-melting columns 13154 on the bottom wall 13151 may pass through orthographic projection of the touch portion 1351 on the bottom wall 13151; accordingly, the main board 15 may be provided with connection holes corresponding to the heat stake posts 13154 to allow the main board 15 to be sleeved and fixed on the heat stake posts 13154 through the connection holes thereon. In short, if the touch portion 1351 is configured as a rectangle, at least two of the heat stake posts 13154 may be generally disposed along a diagonal of the touch portion. In this way, the uniformity of the stress distribution of the main board 15 is increased. Of course, in other embodiments, the heat stake 13154 may be replaced with a screw, a snap, etc., without limitation.

Based on the above-described related description, the microphone 133 may be directly disposed on the side of the main board 15 facing away from the bottom wall 13151 by an SMT process. Accordingly, the bottom wall 13151 may be provided with a flange 13155 located at the periphery of the sink 13153, the flange 13155 extending toward the main board 15 and having a sound pickup hole communicating with the outside of the earphone 10. At this time, the main board 15 may be pressed against the flange 13155 to allow the microphone 133 to collect sound signals through the sound pickup hole. A silicone sleeve 13156 may be further sleeved on the flange 13155 to allow the main board 15 to be elastically supported on the flange 13155 through the silicone sleeve 13156. In this way, not only the tightness of the acoustic path of the microphone 133 but also the uniformity of the distribution of the stress of the main board 15 can be increased.

Further, a metal antenna pattern may be further provided on the second housing 1315 to serve as a communication antenna of the earphone 10. Accordingly, the bottom wall 13151 may be provided with an antenna contact 13157 disposed at the periphery of the slot 13153 and electrically connected to the metal antenna pattern, and the main board 15 may be provided with a metal spring for elastically abutting against the antenna contact 13157. In short, the main board 15 can avoid unnecessary welding by using the metal spring sheet and the antenna contact 13157, thereby reducing the assembly difficulty and saving the internal space of the movement housing 131.

In summary, the main board 15 is connected to the second housing 1315, so that not only the self-fixing, but also the holding of the flexible touch circuit board 135, the sealing of the acoustic path of the microphone 133, and the electrical connection between the main board 15 and the metal antenna pattern can be realized.

Based on the above-mentioned related description, and referring to fig. 21 and 27, the electronic component disposed on the hook portion 11 may be electrically connected to the motherboard 15 through the conductive wire 117, and the electronic component disposed on the connection portion 12 may be directly electrically connected to the motherboard 15 through the lead wire thereof due to the relatively close proximity to the motherboard 15. Wherein the wire 117 may be provided in a plurality of strands, and may include positive and negative leads of the battery 16, signal and shield lines of the detection member 1163, and a negative lead of the second charging electrode 1164; of course, the shielding wire of the detecting member 1163 may be multiplexed with the wire of the second charging electrode 1164 into one wire, so as to simplify the wiring. Further, since the size of the motherboard 15 is limited, there are many electronic components integrated thereon, so that the lead 117 or other leads can be soldered on a flexible circuit board 136, and then the lead is fastened and connected with the motherboard 15 through the flexible circuit board 136, which is beneficial to enlarging the size of the bonding pad and the spacing between the two pads, thereby reducing the soldering difficulty and increasing the soldering reliability.

As an example, the flexible circuit board 136 may include at least a first connection region 1361 for electrically connecting with the battery 16 and a second connection region 1362 for electrically connecting with the main board 15. Wherein the second attachment region 1362 may be disposed along a major surface of the motherboard 15 to facilitate a snap-fit connection of the flexible circuit board 136 to the motherboard 15. Further, the first connection region 1361 may be bent toward the lateral direction of the main board 15 with respect to the second connection region 1362, and may be provided with a plurality of pads, that is, the above-mentioned welding occurs in the lateral direction of the main board 15. In this way, the difficulty of soldering can be reduced since there is no interference of the electronic components on the main surface of the main board 15. Furthermore, the flexible circuit board 136 is thin, and part of the flexible circuit board is bent towards the lateral direction of the main board 15, so that the internal space of the movement housing 131 can be saved. Based on the above-described related description, the plurality of pads provided at the first connection region 1361 may include a first pad and a second pad for solder connection with the positive electrode lead and the negative electrode lead of the battery 16, respectively, may further include a third pad and a fourth pad for solder connection with the positive electrode lead and the negative electrode lead of the charging electrode, respectively, and may further include a fifth pad and a sixth pad for solder connection with the signal line and the shield line of the detecting member 1163, respectively. The shielding wire of the detecting member 1163 and the lead wire of the second charging electrode 1164 can be multiplexed into one lead wire, so that the fourth bonding pad and the sixth bonding pad are arranged in one, and the size of other bonding pads and the interval between every two bonding pads are enlarged.

Based on the above-described related description, since the microphone 125 can be disposed at the connection portion 12 so as to be closer to the main board 15, the flexible circuit board 136 can be further extended to the connection portion 12. Based on this, the flexible circuit board 136 may further include a third connection region 1363 connected to the first connection region 1361, and the third connection region 1363 may be bent toward a direction away from the main board 15 as compared to the first connection region 1361, so that the third connection region 1363 is attached to the first housing 1314 and/or the third housing 122. Wherein the microphone 125 may be disposed at the third connection region 1363 through an SMT process. At this time, the first and

third connection regions

1361 and 1363 may be perpendicular to the main surface of the main board 15, respectively, and the second connection region 1362 may be parallel to the main surface of the main board 15.

Unlike first connection region 1361 is: the second connection region 1362 may be snapped with the motherboard 15 via a BTB connector. Based on this, the flexible circuit board 136 may further include a transition region 1364 connecting the first connection region 1361 and the second connection region 1362, and the transition region 1364 may be located on the same side of the motherboard 15 as the second connection region 1362. Wherein the length of the transition region 1364 is greater than the minimum distance between the first and

second attachment regions

1361, 1362 to facilitate the snap fit of the first attachment region 1361 to the motherboard 15. By way of example, transition region 1364 may be provided as a multi-segment bent structure and may be provided along a major surface of main panel 15.

In connection with fig. 21, movement 14 may include a magnetic circuit 141 and a coil 142, where coil 142 may extend into a magnetic gap of magnetic circuit 141 and may move in a magnetic field formed by magnetic circuit 141 in an energized state. The magnetic circuit system 141 may include permanent magnets, yokes, brackets, and other structural members, and the specific structure and connection relationship thereof are well known to those skilled in the art, and will not be described herein. Further, if cartridge 14 is applied to a bone conduction headset, coil 142 may be configured to move a vibration-transmitting plate; if cartridge 14 is used in an air conduction headset, coil 142 may be configured to move a diaphragm; of course, the coil 142 may also be configured to move a vibration-transmitting sheet and a vibration film simultaneously. The coil 142 is used to drive a diaphragm to move, for example. Based on this, movement 14 may further include a diaphragm 143 connected between coil 142 and magnetic circuit 141, and diaphragm 143 may generate sound transmitted to the ear through sound hole 1311 during vibration.

Further, the movement 14 may further include a metal spring 144 fixed on the periphery of the magnetic circuit 141, where the metal spring 144 is electrically connected to the coil 142. At this time, the movement 14 is elastically pressed on the main board 15 by the metal elastic sheet 144, so that the coil 142 is electrically connected with the contacts on the main board 15. Therefore, the metal spring piece 144 replaces the welding wire in the related art, so that unnecessary welding is avoided, the assembly difficulty is reduced, a welding space is not required to be reserved, and the inner space of the movement shell 131 is saved. The number of the metal spring plates 144 may be two, and may be used as the positive electrode lead and the negative electrode lead of the coil 142, respectively.

As an example, in connection with fig. 26, the metal elastic sheet 144 may include a fixing portion 1441 and an elastic contact portion 1442 connected to one end of the fixing portion 1441, the fixing portion 1441 being connected to the magnetic circuit 141, the elastic contact portion 1442 extending in a direction in which the fixing portion 1441 faces away from the magnetic circuit 141. In short, the portion of the metal spring 144 for electrically connecting with the contacts on the motherboard 15 protrudes out of the magnetic circuit system 141. Further, the metal elastic sheet 144 may further include a limiting portion 1443 connected to the other end of the fixing portion 1441, where the limiting portion 1443 extends on the same side as the elastic contact portion 1442. The elastic contact portion 1442 further bends and extends towards the limiting portion 1443, and the free end of the elastic contact portion 1442 is inserted into the limiting groove of the limiting portion 1443, so that the elastic contact portion 1442 can store an elastic potential energy in advance, and thus the contact between the metal elastic sheet 144 and the contact on the main board 15 is improved. At this time, the height of the middle portion of the elastic contact portion 1442 with respect to the fixing portion 1441 is greater than the height of the free end of the elastic contact portion 1442 with respect to the fixing portion 1441 so as to be in contact with the contacts on the main board 15.

Based on the above-described related description, the magnetic circuit 141 may be connected to a side of the first housing 1314 facing the second housing 1315, and the main board 15 may be connected to a side of the second housing 1315 facing the first housing 1314. At this time, the second housing 1315 is buckled with the first housing 1314, so that the movement 14 elastically presses the metal elastic sheet 144 on the main board 15, which is simple and reliable, and has high assembly efficiency. The two opposite sides of the magnetic circuit 141 may be respectively provided with a metal spring 144 to increase the stability of the second housing 1315 and the main board 15, and the first housing 1314, together with the movement 14. Accordingly, diaphragm 143 may enclose front chamber 200 with first housing 1314, e.g., magnetic circuit 141 is supported on the annular flange formed by splicing second flange 13161 and first flange 13142 mentioned above; the magnetic circuit 141 is provided with a through hole communicating the rear chamber 300 with the diaphragm 143 on the side facing away from the front chamber 200. In other words, cartridge 14 (specifically, diaphragm 143) may divide the accommodation chamber formed by cartridge housing 131 into front chamber 200 and rear chamber 300 that are opposite to each other. At this time, the orthographic projection of the sound outlet 1311 in the vibration direction of the deck 14 may at least partially fall on the diaphragm 143. Further, the main board 15 and the movement 14 are stacked in the thickness direction, and the movement 14 is closer to the ear compared with the main board 15, so that the through hole for connecting the side of the diaphragm 143 away from the rear cavity 300 and the front cavity 200 on the main board 15 can be avoided, and the structure is simplified. Based on this, the ratio between the area of overlap between the orthographic projection of movement 14 on the above reference plane (for example, the plane in which YZ lies) and the orthographic projection of main plate 15 on the above reference plane and the larger of the area of orthographic projection of main plate 15 on the above reference plane and the area of orthographic projection of movement 14 on the above reference plane may be between 0.8 and 1, for example, the area of orthographic projection of movement 14 on the above reference plane and the area of orthographic projection of main plate 15 on the above reference plane are substantially equal. Specifically, the ratio of the absolute value of the difference between the dimension of the movement 14 in the above-described length direction and the dimension of the main board 15 in the above-described length direction to the larger of the dimension of the main board 15 in the above-described length direction and the dimension of the movement 14 in the above-described length direction may be between 0 and 0.2, and the dimensional relationship of both in the above-described height direction may be the same or similar. In this way, under the condition that the volume of the accommodating cavity formed by the deck housing 131 is fixed, the deck 14 can be as large as possible, so as to be beneficial to increasing the sounding loudness of the earphone 10 and widening the frequency response range of the earphone 10.

It should be noted that: referring to fig. 26, although movement 14 may also have a long axis direction (labeled Y1) and a short axis direction (labeled Z1) orthogonal to each other and perpendicular to the vibration direction (labeled X1) of movement 14, the foregoing vibration direction, long axis direction, and short axis direction may be parallel to the foregoing thickness direction, long axis direction, and height direction, respectively, in the embodiments provided herein for convenience of description; of course, in other embodiments an angle between them is allowed. Further, the dimension of movement 14 in the direction of its long axis is greater than or equal to the dimension of movement 14 in the direction of its short axis. As an example, the orthographic projection of movement 14 on the reference plane perpendicular to the vibration direction thereof may be arranged in a rectangular shape, in which case the long axis direction may be the direction in which the long side of the rectangle is located, and the short axis direction may be the direction in which the short side of the rectangle is located.

The inventors of the present application found in long-term studies that: when the main board 15 is disposed on the side of the movement 14 facing away from the front cavity 200, a large number of electronic components with different sizes and shapes disposed on the main board 15 will affect the sound quality of the earphone 10. For this purpose, in connection with fig. 22 or 32, the holding portion 13 may further include a partition 137 provided in the cartridge case 131, the partition 137 mainly serving to separate the cartridge 14 from the main board 15, and may enclose the rear chamber 300, that is, the independent acoustic chamber with the cartridge 14. Specifically, the partition 137 may be located between the magnetic circuit 141 and the main board 15, and may form the rear cavity 300 surrounding the magnetic circuit 141. Of course, in other embodiments, a membrane may be covered on the main board 15, so that the side of the main board 15 facing the movement 14 is as flat as possible.

As an example, the partition 137 may be connected to the movement 14, i.e., modularized, to facilitate assembly. Specifically, referring to fig. 25 and 30, partition 137 may include a bottom wall 1371 and a side wall 1372 connected to bottom wall 1371, where bottom wall 1371 is spaced from magnetic circuit 141, and side wall 1372 extends toward movement 14 and is connected to movement 14 (specifically, magnetic circuit 141) to allow partition 137 and movement 14 to enclose rear cavity 300. The side of the partition 137 facing the magnetic circuit 141 may further be provided with a dispensing slot 1373 and a positioning post 1374 matching with the magnetic circuit 141, so that the partition 137 is accurately assembled with the movement 14. Accordingly, the metal dome 144 may be located at the periphery of the partition 137.

Based on the above-described related description, the side wall 1372 may be further provided with communication holes allowing the rear chamber 300 to communicate with the outside of the earphone 10, for example, a first communication hole 1375 communicating the pressure release hole 1312 with the rear chamber 300 and a second communication hole 1376 communicating the sound adjusting hole 1313 with the rear chamber 300. The sealing member elastically supports and surrounds the communication hole between the partition 137 and the deck housing 131 to seal the sound path of the rear chamber 300 communicating with the outside of the earphone 10.

In the present application, the structural members such as the deck housing 131 and the deck 14 may be generally provided in a cubic structure or a cylindrical structure, and are not limited thereto. Here, the present application exemplifies that movement 14 is provided in a cubic structure. Based on this, the dimension of the partition 137 in the above-described length direction may be greater than or equal to the dimension of the partition 137 in the above-described height direction. In this regard, referring to fig. 25, the sidewalls 1372 may include first and

third sidewalls

13721 and 13723 spaced apart from each other in the length direction and second and

fourth sidewalls

13722 and 13724 spaced apart from each other in the height direction. Further, one of the second sidewall 13722 and the fourth sidewall 13724 may be provided with a first communication hole 1375, and the other may be provided with a second communication hole 1376. Based on the above description, the first communication hole 1375 may be provided at the second sidewall 13722, and the second communication hole 1376 may be provided at the fourth sidewall 13724. Notably, are: referring to fig. 30 and 31, the second side wall 13722 may be omitted, and the first through hole 1375 may be directly defined by the bottom wall 1371, the first side wall 13721 and the third side wall 13723, which will be described in detail below.

Further, the third side wall 13723 may be farther from the sound outlet 1311 than the first side wall 13721, that is, farther from the connecting portion 12 and closer to the free end of the holding portion 13. The size of the first communication hole 1375 in the length direction may be larger than the size of the second communication hole 1376 in the length direction, and the sizes of the first communication hole 1375 and the second communication hole 1376 in the thickness direction may be equal to each other, so that the actual area of the effective communication area between the rear chamber 300 and the outside of the earphone 10 is adjusted. Based on this, the first sidewall 13721 and the fourth sidewall 13724 may be connected by the first arc-shaped transition wall 13725 to avoid that the surrounding inner wall forming the rear cavity 300 has a sharp structure such as a right angle, a sharp angle, etc., which is beneficial to eliminating standing waves. Wherein, the first arc-shaped transition wall 13725 may be provided in a circular arc shape, and the radius of the circular arc may be greater than or equal to 2mm. Similarly, third side wall 13723 and fourth side wall 13724 may be connected by second arc-shaped transition wall 13726, and at least a portion of the inner wall surface of first arc-shaped transition wall 13725 may have a radius of curvature larger than that of the corresponding portion of the inner wall surface of second arc-shaped transition wall 13726, and sharp structures such as right angles, sharp angles, etc. around the inner wall forming rear chamber 300 may be avoided. Of course, in other embodiments, the second arc-shaped transition wall 13726 may not be provided, for example, a portion of the fourth side wall 1374 adjacent to the third side wall 13723 may be entirely used to provide the second communication hole 1376 such that the second communication hole 1376 extends to be flush with the inner wall surface of the third side wall 13723 in the above-described length direction.

It should be noted that: in the thickness direction, the inner wall of the first communication hole 1375 far away from the movement 14 may be flush with the inner wall surface of the bottom wall 1371 facing the movement 14, the inner wall of the second communication hole 1376 far away from the movement 14 may be flush with the inner wall surface of the bottom wall 1371 facing the movement 14, that is, the first communication hole 1375 and the second communication hole 1376 may extend to be flush with the inner wall surface of the bottom wall 1371 along the thickness direction, so as to avoid enclosing the inner wall forming the rear cavity 300 to have sharp structures such as right angles and sharp corners, and further facilitate eliminating standing waves. Further, the inner wall surface of at least one of the first sidewall 13721 and the third sidewall 13723 may be disposed in an arc shape when viewed along the height direction, so as to avoid the inner wall surrounding the rear cavity 300 from having sharp structures such as right angles and sharp corners. Of course, all of the circular arcs between the side walls 1372 and the inner wall surface of the bottom wall 1371 may be connected.

In some embodiments, with reference to fig. 25, the height of second side wall 13722 and fourth side wall 13724 relative to bottom wall 1371 may be greater than the height of first side wall 13721 and third side wall 13723 relative to bottom wall 1371, to allow movement 14 to be nested between second side wall 13722 and fourth side wall 13724, with first side wall 13721 and third side wall 13723 abutting the side of movement 14 facing bottom wall 1371, respectively. At this time, in the thickness direction, the size of the first communication hole 1375 may be greater than or equal to the distance between the bottom wall 1371 and the movement 14, and the size of the second communication hole 1376 may be greater than or equal to the distance between the bottom wall 1371 and the movement 14, so as to avoid surrounding the inner wall forming the rear cavity 300 to have a sharp structure such as a right angle, a sharp angle, etc., and thus facilitate eliminating standing waves. Further, the holding portion 13 may further include a first seal 1381 and a second seal 1382 elastically supported between the partition 137 and the deck housing 131, for example, the first seal 1381 is elastically supported between the second side wall 13722 and the second housing 1315 around the first communication hole 1375, and for example, the second seal 1382 is elastically supported between the fourth side wall 13724 and the second housing 1315 around the second communication hole 1376. Further, the outlet end of the first communication hole 1375 may be covered with a first acoustic resistive mesh 1383, and a side of the first acoustic resistive mesh 1383 away from the sidewall 1372 may be covered with a protective cover. Similarly, the outlet end of the second communication hole 1376 may be covered with a second resistive network 1384, and a side of the second resistive network 1384 facing away from the side wall 1372 may be covered with a shield. Wherein, the acoustic resistance net can not only increase the waterproof and dustproof performance, but also reduce the leakage sound; the structural strength of the protective cover is greater than that of the acoustic resistance net so as to prevent the acoustic resistance net from being punctured by foreign objects. Further, the porosity of the second resistive mesh 1384 may be less than or equal to the porosity of the first resistive mesh 1383.

As an example, the first seal 1381 may include a first extension 13811 and a second extension 13812 connected with the first extension 13811, the second extension 13812 extending laterally of the first extension 13811. Wherein, the first extension 13811 and the second extension 13812 may be respectively attached to the side wall 1372 and the bottom wall 1371 on the side facing away from the rear cavity 300, so as to increase the bonding area between the first sealing member 1381 and the partition 137. Accordingly, the first extension 13811 allows the region of the first acoustically resistive mesh 1383 corresponding to the first communication hole 1375 to be exposed, e.g., the first extension 13811 surrounds the first communication hole 1375 and the first acoustically resistive mesh 1383 thereon, so that the rear cavity 300 communicates with the outside of the earphone 10. Further, the first extension 13811 may press and fix the first acoustic resistive mesh 1383 on a side of the sidewall 1372 facing away from the rear cavity 300 to avoid the first acoustic resistive mesh 1383 from being separated from the sidewall 1372.

In this embodiment, the structure of the second sealing member 1382 and the connection relationship between the second sealing member and the partition 137 may be the same as or similar to that of the first sealing member 1381, and will not be described herein. Further, the first and

second seals

1381 and 1382 may be formed on the partition 137 by an injection molding process.

It should be noted that: in this embodiment, cartridge 14, diaphragm 137 and the structural components such as the acoustically resistive mesh and seals thereon may form a speaker assembly, i.e., modular, for ease of assembly.

In other embodiments, second sidewall 13722 may be omitted in connection with fig. 30; the fourth side wall 13724 may be partially used to provide the second communication hole 1376, and a height with respect to the bottom wall 1371 may be equal to a height of the first side wall 13721 and the third side wall 13723 with respect to the bottom wall 1371 to be abutted together on the magnetic circuit system 141. At this time, the first sealing member 1381 may be first buried in a sink preset in the first sealing member 1381 or the second housing 1315, and then the first sealing member 1381 is attached and fixed to the second housing 1315, and then the first acoustic screen 1383 is clamped together by the second housing 1315 and the first sealing member 1381, and then the subsequent assembly is performed. Wherein a side of the first sealing member 1381 facing the second housing 1315 may be provided with a sink for receiving the first acoustically resistive mesh 1383. Similarly, the second sealing member 1382 and the second resistive network 1384 may be attached to the second housing 1315 to form a housing assembly, i.e., modular, for ease of assembly.

Based on the above detailed description, and for convenience of description, the following definitions will be made with reference to fig. 33: the front chamber 200 may have a first opening 201 allowing the front chamber 200 to communicate with the exterior of the earphone 10, and the rear chamber 300 may have a second opening 301 and a third opening 302 allowing the rear chamber 300 to communicate with the exterior of the earphone 10. Accordingly, the second opening 301 may be further from the ear hole than the first opening 201 and the third opening 302. The first to third openings refer to effective communication areas between the front cavity 200 or the rear cavity 300 and the outside of the earphone 10, that is, areas where the cross-section through which sound passes during transmission from the front cavity 200 or the rear cavity 300 to the outside of the earphone 10 is minimized. For example: the cartridge 14 cooperates with the first housing 1314 (and the cover 1316) to form the front cavity 300, and the first opening 201 corresponds to the sound outlet 1311. In the embodiment of the earphone 10 provided with the partition 137, that is, the partition 137 cooperates with the movement 14 to form the rear cavity 300, if the actual area of the pressure release hole 1312 is larger than the actual area of the second communication hole 1376, the second opening 301 corresponds to the second communication hole 1376; the second opening 301 corresponds to the pressure relief hole 1312 if the actual area of the pressure relief hole 1312 is smaller than the actual area of the second communication hole 1376; if the pressure relief hole 1312 and the second communication hole 1376 are disposed offset from each other, the second opening 301 corresponds to a portion where the pressure relief hole 1312 and the second communication hole 1376 are not blocked from each other. The third opening 302 is similar thereto, and will not be described again. In other embodiments where the earphone 10 is not provided with the partition 137, that is, the second housing 1315 cooperates with the movement 14 to form the rear cavity 300, the second opening 301 and the third opening 302 directly correspond to the pressure relief hole 1312 and the sound adjusting hole 1313, respectively. Of course, if the earphone 10 is not provided with at least one of the front and

rear cavities

200, 300, the corresponding opening may naturally also not exist.

Further, for convenience of description, the effective area described herein may be defined as the product of the actual area of the effective communication area and the porosity of the covered acoustic resistive mesh. For example: when the first opening 201 is covered with an acoustic resistive mesh, the effective area of the first opening 201 is the product of the actual area of the first opening 201 and the porosity of the acoustic resistive mesh; when the first opening 201 is not covered with the acoustic resistive net, the effective area of the first opening 201 is the actual area of the first opening 201. The second opening 301 and the third opening 302 are similar to each other, and will not be described again. In this application, the effective area of the third opening 302 may be smaller than the effective area of the second opening 301.

In some embodiments, referring to fig. 25 and 30, the actual area of the outlet end of the second communication hole 1376 may be smaller than or equal to the actual area of the outlet end of the first communication hole 1375, such that the actual area of the effective communication area of the sound adjusting hole 1313 and the rear chamber 300 may be smaller than or equal to the actual area of the effective communication area between the pressure release hole 1312 and the rear chamber 300. Wherein, the actual area of the outlet end of the pressure relief hole 1312 may be greater than or equal to the actual area of the outlet end of the first communication hole 1375. At this time, the size of the outlet end of the sound adjusting hole 1313 in the above-described length direction may be equal to the size of the outlet end of the pressure release hole 1312 in the above-described length direction; and/or the dimension of the outlet end of the sound adjusting hole 1313 in the thickness direction may be equal to the dimension of the outlet end of the pressure release hole 1312 in the thickness direction. In this way, the actual areas of the effective communication areas between the rear cavity 300 and the outside of the earphone 10 at the sound adjusting hole 1313 and the pressure release hole 1312 can be respectively adjusted by the size of the communication hole so as to meet the corresponding acoustic design requirements, and the sound adjusting hole 1313 and the pressure release hole 1312 can be made to be slightly different in appearance so as to increase the appearance consistency, and the acoustic resistance nets of the same specification can be allowed to be used for reducing the material types/avoiding the mixing. Of course, in other embodiments, the size of the sound adjusting hole 1313 may also be changed along with the change of the second communication hole 1376, so that the second communication hole is significantly different from the pressure release hole 1312 in appearance, so as to increase the appearance recognition. Further, the porosity of the second resistive network 1384 may also be less than or equal to the porosity of the first resistive network 1383, such that the effective area of the effective communication area of the tuning orifice 1313 with the rear cavity 300 may be less than or equal to the effective area of the effective communication area between the pressure relief orifice 1312 and the rear cavity 300.

Further, the effective communication area (e.g., the first communication hole 1375) of the pressure relief hole 1312 and the rear cavity 300 may have a first center (denoted as O1) in the above-mentioned length direction, the effective communication area (e.g., the second communication hole 1376) of the sound tuning hole 1313 and the rear cavity 300 may have a second center (denoted as O2) in the above-mentioned length direction, and the second center may be further away from the center (e.g., O0) of the sound tuning hole 1311 than the first center in the above-mentioned length direction, that is, closer to the above-mentioned third side wall 13723, to pull the distance between the sound tuning hole 1313 and the sound tuning hole 1311 as large as possible, thereby reducing the anti-phase cancellation between the sound outputted to the outside of the earphone 10 through the sound tuning hole 1313 and the sound transmitted to the ear through the sound tuning hole 1311.

It should be noted that: the center of the hole or opening as used herein refers to a position at equal distances around the closed curve that encloses the hole or opening. Wherein, for regular shapes such as circles, rectangles, etc., the center of the hole or opening described herein may be its geometric center; for other irregular shapes, the center of the hole or opening described herein may be its centroid.

In connection with fig. 34, the sound transmitted to the outside of the earphone 10 through the first opening 201 may be simply regarded as a first sound formed by the monopole sound source A1, and the sound transmitted to the outside of the earphone 10 through the second opening 301 may be simply regarded as a second sound formed by the monopole sound source A2, which may be opposite in phase to the first sound so as to be able to cancel in the far field in opposite phase, i.e., form a "sound dipole" to reduce leakage sound. Preferably, in the worn state, the line connecting the two monopole sound sources may be directed exactly towards the earhole (denoted as "listening position") in order for the user to hear a sufficiently loud sound. Wherein the sound pressure magnitude at the listening position (denoted as P _ear ) May be used to characterize the intensity of the sound heard by the user. Further, the sound pressure on the sphere centered on the user listening position is counted (denoted as P _far ) Can be used to characterize the leakage intensity of the far-field radiation from the earphone 10. Wherein P can be obtained by adopting various statistical modes _far For example, the average value of sound pressure at each point of the sphere is taken, and then the area and the like are carried out by taking the sound pressure distribution of each point of the sphere. Obviously, the sound pressure P delivered by the earphone 10 to the user's ear _ear Should be large enough to increase the listening effect; sound pressure P in far field _far Should be small enough to increase the leakage reduction effect. Thus, the parameter α can be taken as an index for evaluating the leakage/listening effect of the earphone 10:

further, when the earphone 10 is in the wearing state, the orthographic projection of the holding portion 13 on the ear portion may mainly fall within the range of the helix, for example, the holding portion 13 is located on the side of the earhole near the top of the head of the user and contacts the antitragus on the front side of the ear portion. At this time, the first opening 201 may be located between the antihelix and the upper auricle, and transmit sound to the auricle. Further, since the concha cavity and the concha boat have a certain depth and are in communication with the earhole, the orthographic projection of the first opening 201 on the ear may at least partially fall into the concha cavity and/or the concha boat, so that the sound transmitted to the outside of the earphone 10 through the first opening 201 is transmitted to the earhole. Furthermore, in conjunction with fig. 35 and 36, the ear portion is also equivalent to a baffle disposed near the listening position, and has the functions of converging and reflecting the sound transmitted to the outside of the earphone 10, so as to change the sound field distribution, thereby not only being beneficial to increasing the sound pressure at the listening position, but also being beneficial to reducing the sound pressure in the far field. Specifically, the listening position is arranged between the baffle plate and the monopole sound source A1, and the baffle plate enables the sound field distribution to be distorted, so that the sound pressure of the listening position is increased; meanwhile, a larger-area opposite-phase cancellation area is reserved in the whole sound field, so that the sound pressure of a far field is reduced. Notably, are: the user's head may also be part of the baffle. Further, since the distance from the two monopole sound sources to the ear can be much smaller than the size of the ear, the ear can achieve an effect similar to an acoustic mirror.

The inventors of the present application found in long-term studies that: in the theoretical model of the acoustic dipole matching the baffle, in connection with fig. 37, the parameter α is mainly affected by the following factors: the included angle theta between the line of the two monopole sound sources (denoted as A1-A2) and the normal of the baffle, the distance D between the two monopole sound sources, the distance D between the monopole sound source A1 and the listening position, the length L of the baffle and the distance B between the baffle and the listening position. Under the condition that the included angle theta and the spacing d are fixed, the longer the length L of the baffle is, the smaller the distance B is, the smaller the parameter alpha is, namely the better the sound leakage effect is. Based on the above-mentioned related description, the user's ear can be considered a baffle such that the length L is relatively fixed, e.g., about 50-80mm, and the distance B is about 0. Further, in order to increase the sound pressure at the listening position to increase the listening effect, the first opening 201 is generally as close to the earhole as possible, i.e. the distance D is generally as small as possible, e.g. the distance between the center of the first opening 201 and the center of the earhole is smaller than or equal to 16mm, e.g. the distance between the lower edge of the holding portion 13 facing the earhole and the highest point (e.g. CP 1) of the hook portion 11 facing away from the holding portion 13 in the above-mentioned height direction is larger than or equal to 19mm. Further, the space d is too small, which can lead to the reduction of sound pressure at the listening position, and is unfavorable for listening; too large a distance d will result in an increase in far-field sound pressure, which is detrimental to sound leakage. In addition, the actual size of the holding portion 13 is also considered. Thus, the distance between the center of the second opening 301 and the center of the first opening 201 may be between 7mm and 15 mm. In a specific embodiment, the distance between the centers of the second opening 301 and the first opening 201 may be 9mm.

Further, in connection with fig. 38, taking "no baffle" as a reference, the "baffle" is obviously beneficial to reducing the parameter α, that is, increasing the effect of reducing the leakage sound; when the included angle θ=0°, the parameter α reaches a minimum value, indicating that the best sound leakage reduction effect can be obtained. In the application, the included angle theta can be within a range of +/-80 degrees; preferably, the included angle θ may be in the range of ±40°; more preferably, the included angle θ may be in the range of ±20°. In addition, in fig. 33, considering that the second opening 301 is generally located on a side of the first opening 201 away from the ear hole, the included angle θ may take only a positive value.

As an example, referring to fig. 39 and 33, a three-dimensional reference coordinate system (denoted as X 'Y' Z ') may be established based on any three of the basic tangential plane and the basic axis of the human body, and then the angle θ between the line connecting the two monopole sound sources and the normal line of the baffle may be determined by the angles between the lines A1-A2 and the X', Y ', Z' axes, respectively. Wherein, based on the above-mentioned related description, the connection line A1-A2 between two monopole sound sources can also be regarded as a connection line (denoted as O1-O0) between the center (e.g. O1) of the second opening 301 and the center (e.g. O0) of the first opening 201. Based on this, the angle θ1 between the line O1-O0 and the sagittal plane described above may be greater than or equal to 10 °, preferably the angle θ1 may be greater than or equal to 30 °; the included angle theta 2 with the above-mentioned coronal plane may be greater than 0 deg., preferably the included angle theta 2 may be greater than or equal to 4 deg.; the angle θ3 with the horizontal plane may be less than or equal to 80 °, and preferably the angle θ3 may be less than or equal to 60 °. In a specific embodiment, the three included angles θ1, θ2, and θ3 may be 34 °, 5 °, and 56 °, respectively.

Further, when the earphone 10 is in a wearing state, the holding portion 13 may be closely attached to the front side of the ear, and the first opening 201 may also be facing the ear, so that it may be simply regarded as the above-mentioned baffle being perpendicular to the average normal line of the first opening 201. Based on this, the angle between the line O1-O0 and a reference plane perpendicular to the average normal of the first opening 201 may be between 25 ° and 55 °. Wherein, the calculation formula of the average normal is as follows:

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.

Obviously, when the first opening 210 is a plane, the reference plane perpendicular to the average normal line is the tangential plane of the first opening 201; accordingly, the average normal line may be parallel to the vibration direction of the movement 14 and the thickness direction. Thus, the angle between the line O1-O0 and the direction of the aforementioned vibrations may be between 0 ° and 50 °, preferably between 0 ° and 40 °.

Further, based on the above description, the ear can be simply considered as a baffle cooperating with the acoustic dipole, and then a reference plane can be determined from at least three physiological positions on the anterior side of the ear that are not collinear, such as the upper auricle, the intertragic notch, and the line between the darwinian nodules forming a reference plane (denoted LA-LB-LD) that can be used to describe the aforementioned baffle. Based on this, the angle between the line O1-O0 and the aforementioned reference plane may be between 23 ° and 53 °. In one embodiment, the angle between the line O1-O0 and the reference plane may be 38.

Further, when the earphone 10 is in a wearing state, a plurality of contact points are formed with the ears to ensure wearing stability, so that positions corresponding to the contact points one by one are also formed on the earphone 10; of course, in those embodiments in which the hook portion 11 is provided with the elastic portion 112, elastic deformation of the elastic portion 112 before and after wearing may cause a certain deviation in the correspondence relationship, which deviation may be controlled by the deformability of the elastic portion 112. Thus, for ease of description, we consider such deviations to be tolerable. As an example, referring to fig. 17 and 45, the free end of the holding part 13 away from the fixing member 20 may have a first reference point (e.g., CP 0) for contacting the front side of the ear, the fixing member 20 may have a second reference point (e.g., CP 3) for contacting the upper root of the ear and a third reference point (e.g., CP 6) for contacting the ear at the rear side of the ear, and the lines between the first reference point, the second reference point and the third reference point form a reference plane (denoted as CP0-CP3-CP 6), which may be used to describe the aforementioned baffle. Based on this, the angle between the line O1-O0 and the aforementioned reference plane may be between 15 ° and 45 °. In one embodiment, the angle between the line O1-O0 and the reference plane may be 30 degrees.

It should be noted that: in contrast to the above-described baffles, the front surface of the ear is not flat, regular, and thus the above-described other parameters related to the parameter α are obtained by theoretical analysis and actual measurement. The actual measurement may refer to a measurement performed after the earphone 10 is worn on the simulator (e.g., GRAS 45BC KEMAR).

It is well known that although the frequency range of sounds perceived by a normal person's ear is between 20Hz and 20kHz, it is not representative that these sounds can all be heard. In general, normal human ears are mainly to hear sounds with frequencies below 4 kHz. Based on this, on the one hand, the resonance frequency of the first sound transmitted to the outside of the earphone 10 through the first opening 201 can be shifted toward the high frequency as much as possible, so that the frequency response curve of the first sound is as flat as possible in the middle-high frequency band and above, so as to increase the listening effect. On the other hand, the resonance frequency of the second sound transmitted to the outside of the earphone 10 through the second opening 301 may be shifted to a high frequency as much as possible, so that the sensitivity of the user to the leakage sound may be reduced, and the anti-phase cancellation may be extended to a high frequency band, so as not to affect the listening effect while reducing the leakage sound. Therefore, the frequency response curve of the first sound may have a first middle-high frequency lowest resonance peak, which is the lowest of all the resonance peak frequencies in the middle-high frequency and above frequency bands of the frequency response curve formed by the first opening 201; similarly, the second sound frequency response curve may have a second mid-high frequency lowest resonance peak, which is the lowest of all the resonance peak frequencies in the mid-high frequency and above frequency bands of the frequency response curve formed by the second opening 301. In short, the frequency response curve of the first sound may have a first resonance peak with a lowest frequency in the middle-high frequency band and above; similarly, the second sound response curve may have a second resonance peak with a lowest frequency in the mid-high band and above. Wherein, the peak resonance frequency of the first middle-high frequency lowest resonance peak and the second middle-high frequency lowest resonance peak may be greater than or equal to 5kHz. Preferably, the peak resonance frequency of the first medium-high frequency lowest resonance peak and the second medium-high frequency lowest resonance peak may be greater than or equal to 6kHz. Further, the difference between the peak resonance frequency of the first medium-high frequency lowest resonance peak and the peak resonance frequency of the second medium-high frequency lowest resonance peak may be less than or equal to 1kHz, so that the second sound and the first sound cancel better in anti-phase in the far field.

It should be noted that: 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. For the frequency response curves described herein, the horizontal axis may represent frequency in Hz; the vertical axis may represent intensity in dB. Further, the first medium-high frequency lowest resonance peak may include a resonance peak generated by cavity resonance, or may include a standing peak generated by cavity surface reflection of the cavity; the second middle-high frequency lowest resonance peak is similar to that described above, and will not be described again here.

Based on the above detailed description, the user mainly listens to the first sound while wearing the earphone 10, and thus the peak resonance frequency of the lowest resonance peak of the first medium-high frequency has a great influence on the listening effect. For this purpose, the first medium-high frequency lowest resonance peak is studied accordingly in order to increase the listening effect. The resonance peak of the first sound in the middle-high frequency band and above may mainly originate from cavity resonance, which generally satisfies a calculation formula of a resonance frequency of the helmholtz resonator:

Wherein f ₀ A resonant frequency, c, of cavity resonance ₀ For the speed of sound in air, S is the actual area of the first opening 201, V is the volume of the front chamber 200, l is the length of the first opening 201, and r is the equivalent radius of the first opening 201. Where l generally depends on the wall thickness of the housing.

Obviously, the larger the actual area of the first opening 201, the smaller the volume of the front cavity 200, the higher the resonant frequency corresponding to the cavity resonance, that is, the easier the first middle-high frequency lowest resonance peak shifts to higher frequency. Further, an acoustic screen is generally covered on the first opening 201 to increase the waterproof and dustproof performance and adjust the frequency response curve. As an example, the effective area of the first opening 201 may be greater than or equal to 2mm ² . In a specific embodiment, the actual area of the first opening 201 may be greater than or equal to 7mm ² The acoustic resistive mesh covered thereon may have a porosity of greater than or equal to 13%; and/or the pore size may be greater than or equal to 18 μm. Advancing oneFurther, the volume of the anterior chamber 200 may be less than or equal to 90mm ³ . The volume of front cavity 200 may be approximately the product of the area of diaphragm 143 and the depth of front cavity 200 in the direction of vibration of deck 14. Based on this, after the specification type of movement 14 is selected, and on the premise that the vibration stroke of diaphragm 143 is satisfied, the smaller the depth of front chamber 200 in the aforementioned vibration direction is, the better. Accordingly, the maximum depth of the front cavity 200 in the aforementioned vibration direction may be less than or equal to 3mm, preferably less than or equal to 1mm.

Further, in connection with fig. 40, when the front cavity 200 is configured in a cube configuration, the cavity surfaces of the front cavity 200 form at least one pair of parallel or approximately parallel reflective surfaces, thereby forming a standing wave. Specifically, when an acoustic wave is reflected within the cavity, the incident wave and the reflected wave overlap to form a fixed antinode, thereby inducing a standing wave at a specific frequency. In other words, the resonance peak of the frequency response curve of the first sound in the middle-high frequency band and above may also originate from a standing wave, which generally satisfies the calculation formula:

n is a positive integer.

Wherein f ₀ For the frequency of the standing wave peak c ₀ For the speed of sound in air, L is the distance between the center of the first opening 201 and the cavity surface of the front cavity 200.

Obviously, the smaller the distance L, the higher the frequency corresponding to the standing wave peak, that is, the easier the first middle-high frequency lowest resonance peak shifts to higher frequency. As an example, on a reference plane (for example, a plane in which Y1Z1 is located) perpendicular to the vibration direction of deck 14, the distance between the center of first opening 201 and the cavity surface of front cavity 200 may be less than or equal to 17.15mm.

Based on the above-described related description, the front chamber 200 may have a first front chamber face 202, a third front chamber face 204, which are spaced apart from each other in the long axis direction of the movement 14, and a second front chamber face 203, a fourth front chamber face 205, which are spaced apart from each other in the short axis direction of the movement 14. Wherein the first anterior chamber surface 202 may be closer to the connecting portion 12 than the third anterior chamber surface 204, the fourth anterior chamber surface 205 may be closer to the earhole than the second anterior chamber surface 203, and a spacing between the first anterior chamber surface 202 and the third anterior chamber surface 204 may be greater than or equal to a spacing between the second anterior chamber surface 203 and the fourth anterior chamber surface 205. Further, the vertical distances from the center of the first opening 201 to the first front cavity surface 202, the second front cavity surface 203, the third front cavity surface 204, and the fourth front cavity surface 205 may be defined as a first distance L1, a second distance L2, a third distance L3, and a fourth distance L4, respectively. At this time, it is assumed that the four vertical distances have the following basic relationship: if L1 is greater than or equal to L2 and greater than or equal to L3 is greater than or equal to L4, the frequencies corresponding to the corresponding resident wave peaks have the following relationship: f1 is less than or equal to f2 is less than or equal to f3 is less than or equal to f4. Obviously, the first peak of the first sound in the mid-high frequency band and above will be determined by the largest of the four vertical distances, and thus may be L1.ltoreq.17.15. As an example, the first distance may be less than or equal to the third distance and the fourth distance may be less than or equal to the second distance, such that the first opening 201 is closer to the earhole.

It should be noted that: the first opening 201 may be opposite to the diaphragm 143 in the vibration direction of the movement 14, and a ratio between a dimension of the first opening 201 in the long axis direction of the movement 14 and a dimension of the first opening 201 in the short axis direction of the movement 14 may be less than or equal to 3, for example, the first opening 201 is arranged in a circular shape, and for example, the first opening 201 is arranged in a racetrack shape.

Referring to fig. 41, the earphone 10 may further include a helmholtz resonator 400 in communication with the front cavity 200, where the helmholtz resonator 400 is configured to attenuate a peak resonance intensity of the first medium-high frequency lowest resonance peak, that is, to absorb acoustic energy of the front cavity 200 near the peak resonance frequency, so as to suppress a sudden increase in the peak resonance intensity, so that a frequency response curve is flatter, and thus sound quality is more balanced. As an example, and in conjunction with fig. 42, a difference between the peak resonance intensity of the first medium-high frequency lowest resonance peak when the opening of the helmholtz resonator 400 communicating with the front chamber 200 is in an open state (denoted as "hr_y") and the peak resonance intensity of the first medium-high frequency lowest resonance peak when the helmholtz resonator 400 communicating with the opening of the front chamber 200 is in a closed state (denoted as "hr_n") may be greater than or equal to 3dB. Further, an acoustic resistive mesh may be disposed on the opening of the helmholtz resonator 400 communicating with the front chamber 200 to further adjust the frequency response curve. Wherein the porosity of the acoustic resistive mesh may be greater than or equal to 3%.

Further, the number of Helmholtz resonators 400 may be multiple to better absorb acoustic energy of front volume 200 near the peak resonant frequency. Wherein a plurality of helmholtz resonator cavities 400 may be arranged in parallel with the front cavity 200, e.g. in communication with the front cavity 200, respectively; alternatively, a plurality of helmholtz resonator chambers 400 may be arranged in series with the front chamber 200, for example communicating with the front chamber 200 through one of them.

In some embodiments, in conjunction with fig. 22, the helmholtz resonator 400 may be disposed within the second region 13B, for example within the flexible cladding structure 132. Specifically, the blind hole 1321 in the flexible covering structure 321 may also serve as the helmholtz resonator 400 in addition to providing a deformation space for the flexible covering structure 132. Accordingly, a communication hole for communicating the helmholtz resonator 400 and the front chamber 200 is left in the cover 1316.

In other embodiments, in conjunction with fig. 27, a helmholtz resonator 400 may be disposed within the connection 12, for example, between the third housing 122 and the first housing 1314. Specifically, the inner wall surface of the first housing 1314 facing the third housing 122 may be provided with a first flange, and the third housing 122 is pressed against the first flange to enclose the helmholtz resonator 400; or the inner wall surface of the third housing 122 facing the first housing 1314 may be provided with a second flange, and the first housing 1314 is pressed against the second flange to enclose the helmholtz resonator 400. In short, the third housing 122 and the first housing 1314 may be snapped together to form the helmholtz resonator 400. Further, the helmholtz resonator 400 may also be formed by a blow molding process, and then placed and fixed in the connection 12.

Based on the above detailed description, in order to shift the resonant frequency of the second sound as high as possible, the rear cavity 300 may also adopt the same or similar technical solution as the front cavity 200, which is not described herein again. The main difference from the front chamber 200 is that: for the standing wave, the back cavity 300 may further shorten the wavelength of the standing wave in the back cavity 300 by destroying the high voltage region of the acoustic field in the back cavity 300, so that the peak resonance frequency of the second middle-high frequency lowest resonance peak is as large as possible. In connection with fig. 33, the third opening 302 may be disposed in the rear chamber 300 in a high-voltage region of the sound field, for example, the third opening 302 and the second opening 301 are located on opposite sides of the movement 14. As an example, and in conjunction with fig. 44, the peak resonance frequency of the second medium-high frequency lowest resonance peak when the third opening 302 is in the open state (denoted as "Turn-on") may be shifted toward a high frequency by an amount greater than or equal to 1kHz as compared to the peak resonance frequency of the second medium-high frequency lowest resonance peak when the third opening 302 is in the closed state (denoted as "Turn-off"). Further, the effective area of the third opening 302 may be smaller than the effective area of the second opening 301 in order to adjust the peak resonance frequency of the second medium-high frequency lowest resonance peak. Of course, the size of the second opening 301 in the long axis direction of the movement 14 may be larger than the size of the first opening 201 in the long axis direction of the movement 14.

Based on the above-described related description, and with reference to fig. 43, rear chamber 300 may have first rear chamber face 303 and second rear chamber face 304 spaced from each other in the long axis direction of movement 14, and second opening 302 and third opening may be spaced from each other in the short axis direction of movement 14. Wherein the actual area of the third opening 302 may be smaller than the actual area of the second opening 301, so that the effective area of the third opening 302 may be smaller than the effective area of the second opening 301. At this time, the section of at least one of the first rear cavity surface 303 and the second rear cavity surface 304, which is close to the third opening 302, may be disposed in an arc shape when viewed along the vibration direction of the movement 14, so as to avoid surrounding the inner wall forming the rear cavity 300 to have sharp structures such as right angles and sharp angles, and thus be beneficial to eliminating standing waves. Further, at least one of the first cavity surface 303 and the third cavity surface 305 may be disposed in an arc shape when viewed along the aforementioned short axis direction, which is also advantageous for eliminating standing waves.

Further, the opening direction of the second opening 301 may be toward the top of the user's head, for example, the angle between the opening direction and the vertical axis is between 0 ° and 10 °, so as to allow the second opening 301 to be further away from the ear hole than the third opening 302, so that it is difficult for the user and other people in the surrounding environment to hear the sound output to the outside of the earphone 10 through the second opening 301, so as to reduce the leakage of sound. The opening direction of the second opening 301 may refer to the direction in which the average normal line thereof is located. Accordingly, the second opening 301 may have a first center (e.g., O1) in the long axis direction of the movement 14, the third opening 302 may have a second center (e.g., O2) in the long axis direction, and the second center is further away from the center of the first opening 201 than the first center in the long axis direction, so as to enlarge the distance between the third opening 302 and the first opening 201 as much as possible, thereby reducing the cancellation of the phase opposition between the sound output to the outside of the earphone 10 through the third opening 302 and the sound transmitted to the ear through the first opening 201. Wherein the first rear cavity surface 303 may be closer to the connecting portion 12 than the second rear cavity surface 304, and at least a portion of the first rear cavity surface 303 may have a radius of curvature that is greater than a radius of curvature of a corresponding portion of the second rear cavity surface 204.

As an example, the first rear cavity surface 303 may include a first sub rear cavity surface 3031, a second sub rear cavity surface 3032, and a third sub rear cavity surface 3033 connected in sequence, and the first sub rear cavity surface 3031 may be closer to the second opening 301 and further from the second rear cavity surface 304 than the third sub rear cavity surface 3033. At least the second sub rear cavity surface 3032 of the second sub rear cavity surface 3032 and the third sub rear cavity surface 3033 may be disposed in an arc shape. For example: the second sub rear cavity surface 3032 is in an arc shape, and the radius of the arc is greater than or equal to 2mm. At this time, in the direction in which the second opening 301 points to the third opening 302, the angle between the tangent line of the second sub rear surface 3032 and the minor axis direction of the movement 14 may gradually become larger, and the angle between the tangent line of the third sub rear surface 3033 and the foregoing minor axis direction may remain unchanged or gradually become smaller.

It should be noted that: the fastening assembly 20 described herein is connected to the holding portion 13 mainly for bringing the holding portion 13 into contact with the front side of the ear in the worn state. Based on this, in some embodiments, the fixing assembly 20 may include the hook portion 11 and the connection portion 12 connecting the hook portion 11 and the holding portion 13, and the related structure and connection relationship thereof may refer to the detailed description of any embodiment of the present application and will not be repeated herein. In other embodiments, in conjunction with fig. 45, the securing assembly 20 may be annularly disposed and wrapped around the ear, such as shown in fig. 45 (a); it may also be provided as an ear-hook and back-hook structure and around the back side of the head, as shown for example in fig. 45 (b); it may also be provided in a head rest configuration and wrapped around the top of the head, as shown for example in fig. 45 (c).

Further, the technical solution described in the present application may be applied to hearing aids, audio glasses or other smart glasses such as AR, VR, MR, in addition to headphones.

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 process transformations made by the present specification and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present application.

Claims

1. An earphone comprising a hook portion, a connecting portion and a holding portion, the connecting portion connecting the hook portion and the holding portion, wherein in a wearing state, the hook portion is configured to be hung between a rear side of an ear of a user and a head portion, the holding portion is configured to contact a front side of the ear, and the holding portion is configured to be allowed to cooperate with the hook portion to clamp the ear; wherein, the side of the holding portion facing the ear portion includes a first region and a second region, the second region is farther from the connecting portion than the first region, and the second region is convex toward the ear portion than the first region.

2. The earphone of claim 1, wherein the second region is located at a free end of the retaining portion remote from the connecting portion, the retaining portion being provided in a convex hull structure at the free end.

3. The headphone according to claim 1, wherein the holding portion has a thickness direction defined as a direction in which the holding portion approaches or separates from the ear portion in a wearing state; wherein, in the thickness direction, the maximum protrusion height of the second region with respect to the first region is greater than or equal to 1mm.

4. The headphone according to claim 1, wherein the holding portion has a thickness direction defined as a direction in which the holding portion approaches or separates from the ear portion in a wearing state; the earphone comprises a machine core for converting an electric signal into mechanical vibration, the machine core is fixed in the holding part and forms a front cavity, the holding part is provided with a sound outlet communicated with the front cavity, the sound outlet outputs sound to the ear, and the orthographic projection of the sound outlet on the ear along the thickness direction at least partially falls in the concha cavity and/or the concha boat of the ear.

5. The earphone of claim 4, wherein the sound outlet is located in the second region.

6. The headset of claim 4, wherein the retention portion is located on a top side of the ear where the earhole of the ear is located and is in contact with the antitragus of the ear; the orthographic projection of the sound outlet on the ear part along the thickness direction at least partially falls into the concha boat.

7. The earphone according to claim 4, wherein the holding portion includes a deck housing connected to the connecting portion, the deck is fixed in a receiving space of the deck housing, the deck housing includes a first housing and a second housing disposed opposite to each other in the thickness direction, the first housing is closer to the ear portion than the second housing, the deck is fixed on a side of the first housing facing the second housing to enclose the front cavity, and the sound outlet is provided on a side of the first housing facing the ear portion.

8. The earphone of claim 7, wherein the first housing is differentially designed in thickness on a side facing the ear and includes two regions that are in one-to-one correspondence with the first region and the second region, respectively, such that the second region is raised toward the ear as compared to the first region.

9. The headphone according to claim 1, wherein the holding portion has a thickness direction defined as a direction in which the holding portion approaches or separates from the ear portion in a wearing state; wherein an orthographic projection of the hook portion on a reference plane perpendicular to the thickness direction does not coincide with an orthographic projection of the holding portion on the reference plane.

10. The earphone of claim 1, wherein the earphone comprises a first charging electrode and a second charging electrode disposed at the hook, one of the first charging electrode and the second charging electrode serving as a charging positive electrode, and the other one serving as a charging negative electrode.