CN218162808U - Movement module and earphone - Google Patents

Abstract

The application discloses core module and earphone. The movement module comprises a movement shell, a main magnet, a vibration transmission piece and a coil. The central region of the vibration-transmitting plate is connected with the main magnet. The edge region of the vibration-transmitting piece is connected with the movement shell so as to suspend the main magnet in the movement shell. The cartridge housing includes a cylindrical side wall, a first end wall, and a second end wall. The first end wall and the cylindrical side wall are integrally formed structural members. The second end wall is connected with one end of the cylindrical side wall, which is far away from the first end wall. The coil is fixed on the inner side of the first end wall facing the second end wall, the first end wall being intended to be in contact with or against the skin of a user. Through the mode, the transmission efficiency of the vibration of the core module can be improved.

Description

Movement module and earphone

Technical Field

The application relates to the technical field of earphones, in particular to a movement module and an earphone.

Background

With the continuous popularization of electronic devices, electronic devices have become indispensable social and entertainment tools in people's daily life, and people have higher and higher requirements for electronic devices. Electronic devices such as earphones are also widely used in daily life of people, and can be used in cooperation with terminal devices such as mobile phones and computers so as to provide hearing feasts for users. Wherein, according to the working principle of the earphone, the earphone can be generally divided into an air conduction earphone and a bone conduction earphone; according to the way that a user wears the earphone, the earphone can be generally divided into a head earphone, an ear-hanging earphone and an in-ear earphone; the headset can be generally classified into a wired headset and a wireless headset according to the interaction between the headset and the electronic device. In the existing earphone, the technical problem of lower vibration transmission efficiency exists in the structural design.

SUMMERY OF THE UTILITY MODEL

In a first aspect, an embodiment of the present application provides a movement module. The movement module comprises a movement shell, a main magnet, a vibration transmission piece and a coil. The central region of the vibration transmission piece is connected with the main magnet. The edge region of the vibration transmission piece is connected with the movement shell so as to suspend the main magnet in the movement shell. The movement housing includes a cylindrical side wall, a first end wall, and a second end wall. The first end wall and the cylindrical side wall are integrally formed structural members. The second end wall is connected with one end of the cylindrical side wall, which is far away from the first end wall. The coil is fixed on the inner side of the first end wall facing the second end wall, the first end wall being intended to be in contact with or against the skin of a user.

In a second aspect, embodiments of the present application provide a headset. The earphone includes supporting component and foretell core module, and supporting component is connected with the core casing to it wears to wearing the position to support the core module.

The beneficial effect of this application is: unlike the prior art, the coil of the present application is disposed on the first end wall, and the first end wall is disposed in contact with or against the skin of the user, such that the force of the coil can be directly transmitted to the first end wall and then to the user. Thus, the transmission path of the vibration can be shortened, the loss of the vibration transmitted to the user can be reduced, and the transmission efficiency of the vibration can be improved.

Drawings

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

fig. 2 is a schematic structural diagram of an embodiment of a movement module according to the present application;

fig. 3 is a schematic structural diagram of an embodiment of the movement module shown in fig. 2;

fig. 4 is a schematic structural view of another embodiment of the movement module shown in fig. 2;

fig. 5 is a schematic structural diagram of an embodiment of the movement module according to the present application;

fig. 6 is a schematic structural view of an embodiment of the movement module shown in fig. 5;

fig. 7 is a schematic structural view of another embodiment of the movement module shown in fig. 5;

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

fig. 9 is a schematic structural view of an embodiment of the movement module shown in fig. 8;

fig. 10 is a schematic structural view of another embodiment of the movement module shown in fig. 8;

fig. 11 is a schematic structural diagram of an embodiment of a movement module according to the present application;

fig. 12 is a schematic structural view of an embodiment of the movement module shown in fig. 11;

figure 13 is a schematic structural view of another embodiment of the cartridge module of figure 11;

fig. 14 is a schematic structural view of an embodiment of a vibration-transmitting plate in the movement module of the present application;

fig. 15 is a schematic structural diagram of another embodiment of the vibration-transmitting plate in the movement module according to the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, (a) to (c) in fig. 1 are schematic wearing diagrams of various embodiments of the headset 1 provided in the present application.

In the embodiment of the present application, the earphone 1 may be an electronic device such as a music earphone, a hearing aid earphone, a bone conduction earphone, a hearing aid, audio glasses, a VR device, and an AR device.

Referring to fig. 1, the headset 1 may include a movement module 100 (which may also be a movement module 200, a movement module 300, or a movement module 400 described below) and a support assembly 20, wherein the movement module 100 is connected to the support assembly 20. The movement module 100 can be used for converting an electrical signal into mechanical vibration so as to be used for hearing sound through the earphone 1; the support component 20 can be used for supporting the movement module 100 to wear to wearing position, and the aforesaid wearing position can be the specific position on user's head, for example mastoid process, temporal bone, parietal bone, frontal bone etc. of head, for example again the ear deviates from the front side of head, for example again the left and right sides of head and lie in the position of user's ear front side on human sagittal axis. Further, the movement vibration generated by the movement module 100 may be transmitted through the medium such as the skull of the user (i.e. bone conduction) to form bone conduction sound, or may be transmitted through the medium such as air (i.e. air conduction) to form air conduction sound. The support member 20 may be annularly disposed and wound around the ear of the user, such as shown in fig. 1 (a); it may also be arranged that the ear hook and back hook structure cooperate to be disposed around the back side of the head, such as shown in fig. 1 (b); or may be provided in a head-beam configuration and wound over the top of the user's head, such as shown in fig. 1 (c).

It should be noted that: the core module 100 of this application can set up two, and two core modules 100 all can change the core vibration into with the signal of telecommunication, mainly are for the ease of earphone 1 realizes the stereo audio. Therefore, in other application scenarios where the requirement for stereo is not particularly high, such as hearing assistance of hearing patients, live prompt of a host, etc., the headset 1 may be provided with only one core module 100.

As an example, the supporting component 20 may include two ear-hooking components and a rear-hooking component, two ends of the rear-hooking component are respectively connected to one end of a corresponding one of the ear-hooking components, and the other end of each ear-hooking component, which is away from the rear-hooking component, is respectively connected to a corresponding one of the movement modules 100. Further, the back-hang component can be set to be curved for being around establishing at user's head rear side, and the ear-hang component also can be set to be curved for being hung to establish between user's ear and head, and then be convenient for realize the demand of wearing of earphone 1. So, when earphone 1 was in the wearing state, two core modules 100 were located the left side and the right side of user's head respectively, and two core modules 100 also held user's head under the mating action of supporting component 20, and the user also can hear the sound of earphone 1 output.

Next, a specific structure of an embodiment of the movement module 100 is described, and an example structure of the movement module 100 is described in the embodiment of the movement module 100 of the present application.

Referring to fig. 2 to 4, in an embodiment, the movement module 100 includes a movement housing 130, a main magnet 120, a vibration plate 140, a first coil 111, and a second coil 112.

The main magnet 120 in this embodiment may be a permanent magnet or a magnetic conductive member made of a soft magnetic material. The main magnet 120 and the damper blade 140 may be disposed within a housing cavity of the engine housing 130. The first coil 111 and the second coil 112 may be disposed in the accommodating cavity of the movement housing 130, or may be disposed outside the accommodating cavity of the movement housing 130, and are not particularly limited herein.

The damper blade 140 connects the main magnet 120 and the deck housing 130 to suspend the main magnet 120 within the deck housing 130. For example, one end of the vibration transmitting plate 140 is connected to the main magnet 120, the other end of the vibration transmitting plate 140 is connected to the movement housing 130, a plurality of vibration transmitting plates 140 may be provided, and a plurality of vibration transmitting plates 140 may be radially disposed with the main magnet 120 as a center. In this way, the main magnet 120 can be commonly suspended by the plurality of the vibration guide plates 140, and the stability of the suspension of the main magnet 120 can be enhanced. The center region of the damper blade 140 is connected to the main magnet 120, and the edge region of the damper blade 140 is connected to the movement housing 130. The first coil 111 and the second coil 112 are respectively located on two opposite sides of the main magnet 120, and are arranged to be fixed relative to the movement housing 130.

The first coil 111 and the second coil 112 may be energized to generate a magnetic field. By controlling parameters such as the direction and magnitude of the current in the first coil 111 and the second coil 112, the magnetic fields of the first coil 111 and the second coil 112 and the magnetic field of the main magnet 120 can interact with each other, so that the main magnet 120 moves relative to the first coil 111 and the second coil 112. Since the first coil 111 and the second coil 112 are fixed to the movement housing 130, the main magnet 120 and the movement housing 130 can be further driven to generate relative motion, that is, generate vibration. In this embodiment, if the main magnet 120 is a permanent magnet, the directions of the currents in the first coil 111 and the second coil 112 are reversed. In other words, the polarities of the magnetic poles of the magnetic fields generated when the first coil 111 and the second coil 112 are energized, which are close to each other, are the same. So arranged, the main magnet 120 can be driven to move relative to the movement housing 130 along the axial direction of the first coil 111 and the second coil 112. Further, the first coil 111 and the second coil 112 generate a reaction force of the driving force to the main magnet 120, which can act on the movement housing 130, and the reaction force can drive the movement housing 130 to move relative to the main magnet 120. Wherein the moving direction of the main magnet 120 is opposite to the moving direction of the movement housing 130.

In some embodiments, the main magnet 120 may be a magnetically permeable member made of a soft magnetic material. The magnetic conductive member may be, for example, silicon steel, iron core, ferrite, or the like. It will be appreciated that the first coil 111 and the second coil 112, when energized, magnetize the magnetically permeable member, thereby creating an attractive force on the magnetically permeable member. That is, the first coil 111 and the second coil 112 can control the attraction force to the magnetic conductive members by controlling the current magnitude, respectively, so that the magnetic conductive members can vibrate with respect to the movement housing 130. Since the magnetic conductive member always generates a mutually attractive force with the first coil 111 and the second coil 112, the directions of currents in the first coil 111 and the second coil 112 or the directions of magnetic poles of the first coil 111 and the second coil 112 may not be limited. The design of the circuit can be simplified and the production and the manufacture are convenient.

Further, the vibration transmitting plate 140 can transmit the vibration portion of the main magnet 120 to the movement housing 130 during the movement of the main magnet 120. The vibration transmission capability of the vibration transmission plate 140 is affected by the vibration frequency, and the related theory is well known to those skilled in the art and will not be described in detail.

Specifically, at low frequency vibrations, the vibration transmitting plate 140 transmits the vibrations of the main magnet 120 to the movement housing 130 to a greater extent. Since the movement housing 130 is mainly driven by the first coil 111 and the second coil 112 to vibrate, the vibration phase of the main magnet 120 is opposite to that of the movement housing 130, and the vibration amplitude of the movement housing 130 is weakened by the movement of the main magnet 120. Therefore, when the movement module 100 conducts low-frequency vibration, the amplitude of the movement shell 130 is not large, vibration of a user can be reduced, and user experience is improved.

At high frequency vibrations, the vibration transmitting plate 140 transmits less vibrations of the main magnet 120 to the movement housing 130, and the vibrations of the movement housing 130 are less affected by the movement of the main magnet 120. Therefore, when the movement module 100 conducts a high-frequency signal, the amplitude is hardly affected, and the movement housing 130 mainly vibrates under the driving of the first coil 111 and the second coil 112. In conclusion, the use experience of the user during the low-frequency operation can be improved by the movement module 100, and the vibration during the high-frequency operation is hardly influenced. The low vibration sense during low frequency is guaranteed, and the high frequency sound effect during high frequency is also guaranteed.

Moreover, the movement module 100 adopts a dual-coil driving mode, which is beneficial to improving the vibration efficiency of the movement module 100 and can facilitate the relative motion between the movement housing 130 and the main magnet 120. Compared with a single coil, in the embodiment, two coils are respectively arranged on two sides of the main magnet 120 to form a double coil, which is beneficial to enhancing the magnetic field intensity formed by the coils, so as to generate stronger magnetic force with the main magnet 120, and is beneficial to improving the amplitude of vibration of the movement shell 130 driven by the coils. Further, under the condition of the same number of turns, compared with the case that the coils are arranged on one side of the main magnet 120, the first coil 111 and the second coil 112 are respectively arranged on two sides of the main magnet, so that the space requirement for installing the coils on one side is reduced, and the axial size of the coils is reduced.

Referring to fig. 5 to 7, in an embodiment, the movement module 200 includes a movement housing 230, a coil 210, a vibration plate 240, a first magnet 221, and a second magnet 222. The coil 210 and the vibration-transmitting plate 240 may be disposed in the housing cavity of the deck case 230. The first magnet 221 and the second magnet 222 are permanent magnets in this embodiment. The first magnet 221 and the second magnet 222 may be disposed in the accommodating cavity of the movement housing 230, or may be disposed outside the accommodating cavity of the movement housing 230, and are not particularly limited herein. The vibration plate 240 connects the coil 210 and the movement case 230 to suspend the coil 210 within the movement case 230. Specifically, for example, one end of the vibration plate 240 may be connected to the coil 210, and the other end of the vibration plate 240 may be connected to the movement case 230.

Further, the center region of the vibration plate 240 is connected to the coil 210, and the edge region of the vibration plate 240 is connected to the movement case 230. The first magnet 221 and the second magnet 222 are respectively located on opposite sides of the coil 210, and are disposed to be fixed relative to the movement case 230.

The coil 210 may be energized with an electric current to generate a magnetic field. By controlling parameters such as the direction and magnitude of the current in the coil 210, the magnetic field generated by the coil 210 interacts with the first magnet 221 and the second magnet 222, and the coil 210 moves relative to the first magnet 221 and the second magnet 222. Since the first magnet 221 and the second magnet 222 are fixed to the movement case 230, the coil 210 can be further driven to generate relative movement, that is, vibration, with respect to the movement case 230. In the present embodiment, the polarities of the first and second magnets 221 and 222 toward one end of the coil 210 are the same. This arrangement enables the coil 210 to move in the axial direction of the coil 210 when energized, in cooperation with the first and second magnets 221 and 222. Further, the force generated by the coil 210 on the first magnet 221 and the second magnet 222 can act on the movement case 230, and the force can drive the movement case 230 to move relative to the coil 210. Wherein the movement direction of the coil 210 is opposite to the movement direction of the movement housing 230.

The vibration transmitting plate 240 is capable of transmitting a vibration portion of the coil 210 to the movement case 230 during movement of the coil 210. Specifically, at the time of low-frequency vibration, the vibration transmitting plate 240 transmits the vibration of the coil 210 to the movement case 230 to a large extent. Since the movement case 230 is mainly vibrated by the first magnet 221 and the second magnet 222, the vibration phase of the coil 210 is opposite to the vibration phase of the movement case 230, and the amplitude of the vibration of the movement case 230 is greatly attenuated by the movement of the coil 210. So core module 200 is when conduction low frequency signal, and the amplitude is less, can reduce user's the sense of shaking, improves user experience.

At high frequency vibration, the vibration transmitting plate 240 transmits less vibration of the coil 210 to the movement case 230, and the vibration of the movement case 230 is less affected by the movement of the coil 210. Therefore, when the movement module 200 conducts a high-frequency signal, the amplitude of the high-frequency signal is hardly affected, and the movement housing 230 mainly vibrates under the driving of the first magnet 221 and the second magnet 222. To sum up, core module 200 can improve the use experience of low frequency during operation user, and can hardly exert an influence on the vibration of high frequency during operation. The low vibration sense during low frequency is guaranteed, and the high-frequency sound effect during high frequency is guaranteed.

Moreover, the movement module 200 adopts a mode that magnets are arranged on two sides of the coil 210, and the magnets arranged on two sides can generate interaction force with the coil 210, so that the vibration efficiency of the movement module 200 is improved, and the movement module can be convenient for relative movement between the movement shell 230 and the coil 210. The magnetic field acting on the coil 210 can be enhanced by providing the first and second magnets 221 and 222, and the driving force applied to the coil 210 can be increased, thereby improving the vibration efficiency. And the first magnet 221 and the second magnet 222 are respectively arranged at two sides of the coil 210, so that the space inside the movement housing 230 can be reasonably utilized, and the weight of the first magnet 221 and the second magnet 222 can be more uniformly distributed on the movement housing 230.

Referring to fig. 8 to 10, in an embodiment, the movement module 300 includes a movement housing 330, a main magnet 320, a vibration-transmitting plate 340, and a coil 310. The main magnet 320 in this embodiment is a permanent magnet. The main magnet 320 and the damper blade 340 may be disposed within a receiving cavity of the deck housing 330. The coil 310 may be disposed in the accommodating cavity of the movement housing 330, or disposed outside the accommodating cavity of the movement housing 330, which is not limited herein. The damper blade 340 connects the main magnet 320 and the deck housing 330 to suspend the main magnet 320 within the deck housing 330. Specifically, for example, one end of the vibration transmitting plate 340 is connected to the main magnet 320, and the other end of the vibration transmitting plate 340 is connected to the movement housing 330. The center region of the damper blade 340 is connected to the main magnet 320, and the edge region of the damper blade 340 is connected to the movement case 330.

Specifically, the coil 310 may be energized with an electric current to generate a magnetic field. By controlling parameters such as the direction and magnitude of the current in the coil 310, the magnetic field of the coil 310 interacts with the magnetic field of the main magnet 320, causing the main magnet 320 to move relative to the coil 310. Since the coil 310 is fixed to the movement housing 330, the main magnet 320 and the movement housing 330 can be further driven to generate relative movement, i.e., generate vibration. Further, the coil 310 generates a reaction force to the main magnet 320 for the driving force, which can act on the movement housing 330, and the reaction force can drive the movement housing 330 to move relative to the main magnet 320. Wherein the moving direction of the main magnet 320 is opposite to the moving direction of the movement housing 330.

The damper blade 340 is capable of transmitting a vibration portion of the main magnet 320 to the deck case 330 during the movement of the main magnet 320.

Specifically, at low frequency vibrations, the vibration transmitting plate 340 may transmit more of the main magnet 320 vibrations to the movement housing 330. Since the movement housing 330 is mainly driven by the coil 310 to vibrate, the vibration phase of the main magnet 320 is opposite to that of the movement housing 330, and the vibration amplitude of the movement housing 330 is greatly weakened by the movement of the main magnet 320. Therefore, the amplitude of the movement module 300 is small when the low-frequency signal is conducted, the vibration sense of a user can be reduced, and the user experience is improved.

When vibrating at high frequency, the vibration transmitting plate 340 transmits less vibration of the main magnet 320 to the movement housing 330, and the vibration of the movement housing 330 is less affected by the movement of the main magnet 320. Therefore, when the movement module 300 conducts a high-frequency signal, the amplitude is hardly affected, and the movement housing 330 mainly vibrates under the driving of the coil 310. To sum up, core module 300 can improve the use experience of low frequency during operation user, and can hardly exert an influence to the vibration of high frequency during operation. The low vibration sense during low frequency is guaranteed, and the high frequency sound effect during high frequency is also guaranteed.

Further, the deck case 330 includes a cylindrical side wall 333, a first end wall 331, and a second end wall 332. The coil 310 is fixed on the inside of the first end wall 331 towards the second end wall 332, the first end wall 331 being intended to be in contact with or against the skin of a user. Referring to fig. 8, it can be understood that, during the operation of the movement module 330, the power source of the vibration of the movement housing 330 is the interaction force of the coil 310 and the magnet. And in particular the coil 310, transfers a force to the cartridge housing 330 to cause relative movement.

The coil 310 is fixed to the first end wall 331. If the second end wall 332 contacts or abuts against the skin of the user, the power source for the vibration of the second end wall 332 requires the coil 310 to transmit the force to the first end wall 331, the first end wall 331 transmits the force to the tubular side wall 333, and the tubular side wall 333 transmits the force to the second end wall 332. Such multiple transmissions may lose more energy, and the efficiency of vibration transmission is low, resulting in a reduction in the vibration transmitted to the user. The first end wall 331 is disposed to contact or abut against the skin of the user so that the force of the coil 310 can be directly transmitted to the first end wall 331 and then to the user, reducing the loss of the vibration transmitted to the user, and improving the transmission efficiency of the vibration.

Optionally, the first end wall 331 is an integrally formed structural member with the cylindrical side wall 333. The second end wall 332 is connected to an end of the cylindrical side wall 333 facing away from the first end wall 331. The cylindrical side wall 333 is provided on the inside with an annular flange 334, and the edge region of one vibration-transmitting plate 340 is fixed to the annular flange 334, and the second end wall 332 presses the edge region of the other vibration-transmitting plate 340 against the end of the cylindrical side wall 333 opposite to the first end wall 331.

With reference to fig. 11 to 13, the movement module 400 includes a main magnet 420 and a coil 410 disposed outside the main magnet 420. In particular, the coil 410 is disposed around the main magnet 420, and the coil 410 and the main magnet 420 are disposed to be capable of relative movement.

The engine module 400 further includes an engine housing 430, and the main magnet 420 may be disposed in an accommodating cavity of the engine housing 430. The coil 410 may be disposed in the accommodating cavity of the movement housing 430, or may be disposed outside the accommodating cavity of the movement housing 430, and is not limited herein.

The main magnet 420 is formed by magnetizing a hard magnetic material, and includes a plurality of magnetic portions 421 spaced apart along a first direction of the main magnet 420, and a spacer 422 interposed between any two adjacent magnetic portions 421. Wherein the remanence of the magnetic portion 421 is greater than the remanence of the spacer 422. The first direction is defined as a direction in which two magnetic poles of any one of the magnetic portions 421 of the main magnet 420 are located.

Specifically, the main magnet 420 is a complete one-piece that can be formed by the following magnetization. During the process of magnetizing the main magnet 420, different sections of the main magnet 420 can be treated differently depending on the distribution of the magnetic portions 421 and the spacers 422. For example, the spacer 422 of the main magnet 420 is placed in a magnetizing sleeve capable of shielding the magnetic field, and the magnetizing sleeve surrounds the spacer 422, so that when the main magnet 420 is magnetized, the magnetic field is shielded by the magnetizing sleeve, the distribution of the magnetic field in the spacer 422 is reduced, and the magnetization of the spacer 422 is reduced. This enables the remanence of the spacer portion 422 to be smaller than the remanence of the magnetic portion 421. Referring to fig. 11 and 13, the magnetizing process is exemplarily described by taking the number of the magnetic portions 421 of the main magnet 420 as two and disposing a spacing portion 422 between the two magnetic portions 421. Fig. 13 shows two magnetizing coil sets 500 respectively corresponding to the two magnetic parts 421, each magnetizing coil set 500 including at least one magnetizing coil. The magnetizing coil assembly 500 can magnetize the two magnetic portions 421 independently. The magnetizing coil assembly 500 can control the direction of the magnetization polarity of the magnetic portion 421 by adjusting the current or the like. In fig. 13, the position of the spacer 422 is less influenced by the magnetizing coil 500, and the magnetic field can be further shielded by arranging the magnetizing sleeve, so that the residual magnetism of the spacer 422 after magnetizing can be ensured to be smaller than that of the magnetic part 421. In other embodiments, the spacer 422 may weaken the remanence of the spacer 422 or even lose the magnetism of the spacer 422, i.e., demagnetize the spacer 422, by, for example, applying a reverse magnetic field or applying high temperature or vibration to the spacer 422, so that the remanence of the spacer 422 is zero. The shielding process and the degaussing process for the spacer 422 may be performed in combination.

Further, referring to fig. 12, when the magnetic portions 421 are magnetized, the magnetic portions 421 may be magnetized so that the polarities of the sides of any two adjacent magnetic portions 421 facing each other are the same. So set up, can improve the holistic magnetic field distribution of main magnet 420 for the line is felt to magnetism can be comparatively concentrated and can be approximate the perpendicular coil 410 that passes the main magnet 420 outside, thereby the interact power between coil 410 and the main magnet 420 when making the circular telegram strengthens, can promote the holistic vibration effect of core module 400.

The main magnet 420 is constructed of a complete piece of hard magnetic material, in other words, the main magnet 420 is a separate piece. In comparison, the one-piece main magnet 420 has higher dimensional accuracy, which is beneficial to improving the assembly accuracy of the main magnet 420 in the movement housing 430 and reducing the collision between the main magnet 420 and the coil 410 and the movement housing 430 when the main magnet 420 vibrates. The integrally disposed main magnet 420 prevents the manufacture of the main magnet 420 from being affected by the interaction force between the adjacent magnetic portions 421, which is further beneficial to improving the dimensional accuracy of the whole main magnet 420. Further, in the related art, when two permanent magnets are oppositely fixed together in the same polarity, the installation is inconvenient due to the large magnetic repulsion force, and the main magnet 420 in the movement module 400 provided by the present application is formed by magnetizing a hard magnetic material, so that the main magnet includes a plurality of magnetic portions 421 distributed at intervals along the first direction of the main magnet 420 and a spacing portion 422 between any two adjacent magnetic portions 421, and the polarities of the opposite sides of any two adjacent magnetic portions 421 are the same, that is, after the main magnet 420 is magnetized, it is not necessary to overcome the magnetic repulsion force for installation like the related art.

Here, referring to fig. 11 and 12, the number of the coils 410 is greater than or equal to the number of the magnetic portions 421, and the plurality of coils 410 are sequentially arranged in the first direction of the main magnet 420. Referring to fig. 11, the number of coils 410 is three, and the number of magnetic portions 421 is two, for example: by arranging the coils 410 in the first direction in a larger number than the magnetic portions 421, the magnetic fields generated by the magnetic portions 421 in the main magnet 420 can pass through the coils 410 as much as possible, so that the utilization rate of the magnetic fields generated by the magnetic portions 421 is increased, which is beneficial to improving the driving force of the coils 410 on the main magnet 420. In this embodiment, the number of the coils 410 may also be two, for example, that is, the number of the coils 410 is equal to the number of the magnetic portions 421, which can also produce the above technical effects, and is not described again.

Specifically, in an embodiment, optionally, the number of the coils 410 is one more than the number of the magnetic portions 421, and referring to fig. 12, the first and the last two of all the coils 410 partially overlap with the first and the last two of all the magnetic portions 421 in a one-to-one correspondence respectively when orthographically projected to the side of the main magnet 420 along the second direction of the main magnet 420. Wherein, the second direction is defined as the direction perpendicular to the first direction. In other words, the coils 410 at both ends correspond to the magnetic portions 421 at both ends. This arrangement enables the coil 410 to be disposed in a region where the magnetic induction lines of the both-end magnetic portions 421 are relatively dense, and can improve the electromagnetic force generated when the current is applied. The remaining coils 410 partially overlap all of the spacers 422 in a one-to-one correspondence when orthographically projected to the side of the main magnet 420 along the second direction of the main magnet 420, in other words, the remaining coils 410 partially overlap the spacers 422 in a one-to-one correspondence. The spacing part 422 between two adjacent magnetic parts 421 can play a role of magnetic conduction, so that the coil 410 and the spacing part 422 are correspondingly arranged, which is beneficial for the magnetic field formed by the main magnet 420 to uniformly and intensively pass through the coil 410, and can also improve the acting force between the coil 410 and the main magnet 420 when electrified.

In one embodiment, the movement module 400 may further include a vibration damping sheet. Specifically, cartridge housing 430 includes a cylindrical side wall 433, a first end wall 431, and a second end wall 432. The first end wall 431 and the second end wall 432 are provided so that the coil 410, the magnet and the like can be conveniently installed in the core case 430, and the installation and the manufacture of the case are facilitated. Wherein the second end wall 432 and the cylindrical side wall 433 are movably provided. In the present embodiment, an edge portion of the vibration transfer sheet 440 may be connected to the second end wall 432. The magnetic conductive ring 480 may be connected to the second end wall 432, and the second end wall 432 may be matched with the movement housing 430 through the vibration damping sheet, so as to suspend the second end wall 432 in the accommodating cavity of the movement housing 430. The coil 410 can drive the main magnet 420 to vibrate, the vibration is transmitted to the second end wall 432 through the vibration transmitting plate 440, and the vibration of the second end wall 432 is transmitted to the cylindrical side wall 433 through the vibration absorbing plate. Because of the existence of the damping sheet, the mechanical vibration generated by the movement module 400 can be less or even not transmitted to the cylindrical side wall 433, thereby avoiding the cylindrical side wall 433 and the first end wall 431 from driving the air vibration outside the earphone 1 to a certain extent, and being beneficial to reducing the sound leakage of the earphone 1. Certainly, in order to reduce the sound leakage of the earphone 1, at least one through hole (commonly referred to as a "sound leakage reducing hole") for communicating the accommodating cavity of the movement housing 430 with the outside of the earphone 1 may be formed in the movement housing 430, and related principles and structures thereof are well known to those skilled in the art and will not be described herein again.

The vibration transfer plate 140, the vibration transfer plate 240, the vibration transfer plate 340 and the vibration transfer plate 440 in the above embodiments have the same structure and function, and at least have the same technical effect. On the basis of the above-described embodiment, the vibration-transmitting plate 140 will be described as an example. In other embodiments, the vibration plate 240, the vibration plate 340, and the vibration plate 440 are the same.

Specifically, the number of the vibration transmitting plates 140 is two, and the two vibration transmitting plates 140 elastically support the main magnet 120 from opposite sides of the main magnet 120, respectively.

Specifically, in the vibration direction of the core module 100, one of the two vibration transmitting pieces 140 may elastically support the main magnet 120 from opposite sides of the main magnet 120, respectively. Thus, compared with the one-sided constraint of the main magnet 120, the two opposite sides of the middle main magnet 120 in the vibration direction of the core module 100 are elastically supported, so that there is no abnormal vibration such as obvious shaking, which is beneficial to increase the stability of the vibration of the core module 100.

Further, in some embodiments, such as fig. 2, 5, 8, or 9, the main magnet 120 may include a magnet, and a magnetically permeable cover or bowl (shown but not labeled) partially surrounding the magnet. This improves the magnetic field distribution of the main magnet 120 and enhances the interaction between the coil 210 and the main magnet 120. The first coil 111 and the second coil 112 may also improve the magnetic field distribution generated by the coil 210 by heating the magnetically permeable cover or the magnetically permeable bowl as described above.

In other embodiments, such as fig. 2, the main magnet 120 may include a first magnetic part 121 and a second magnetic part 122 which are arranged in a stacked manner in the vibration direction of the movement module 100; the magnetization directions of the first magnetic part 121 and the second magnetic part 122 are different.

In the vibration direction of the movement module 100, one of the vibration transmitting pieces 140 can elastically support the main magnet 120 from the side of the first magnetic part 121 away from the second magnetic part 122, and the other vibration transmitting piece 140 can elastically support the main magnet 120 from the side of the second magnetic part 122 away from the first magnetic part 121. For example: the central region of one vibration-transmitting plate 140 is connected to the side of the first magnetic part 121 away from the second magnetic part 122, and the central region of the other vibration-transmitting plate 140 is connected to the side of the second magnetic part 122 away from the first magnetic part 121.

Further, the main magnet 120 may further include a magnetic conductive plate 170 interposed between the first magnetic part 121 and the second magnetic part 122. The magnetization directions of the first magnetic part 121 and the second magnetic part 122 may be opposite, and both are perpendicular to the surface of the magnetic conductive plate 170 facing the first magnetic part 121 or the second magnetic part 122. Therefore, the magnetic field formed by the main magnet 120 is favorably concentrated in the main magnet, and the magnetic leakage is reduced.

For example, as shown in fig. 3, the movement module 100 may further include a magnetic conductive ring 180 that is sleeved outside the main magnet 120 around an axis parallel to the vibration direction of the movement module 100 (the movement module 200 and the movement module 300 may also be provided with a magnetic conductive ring 280 and a magnetic conductive ring 380, and the same applies to the movement module 400), that is, the magnetic conductive ring 180 and the main magnet 120 are arranged at an interval in a direction perpendicular to the vibration direction of the movement module 100. The edge regions of the vibration-transmitting plate 140 may be connected to both ends of the magnetic conductive ring 180, respectively. In other words, the magnetic conductive ring 180 may have a cylindrical structure with two open ends. The magnetic conductive ring 180 in this embodiment is a cylindrical structure with two open ends, which is beneficial to eliminating the sound cavity effect of the magnetic circuit, thereby reducing the sound leakage of the earphone 1. Of course, in other embodiments, such as those in which the concentration of the magnetic field generated by the main magnet 120 is not critical, the magnetically permeable ring 180 may be replaced with a non-magnetic member, such as a plastic stent. Based on this, the edge regions of the vibration-transmitting plate 140 may be connected to both ends of a plastic bracket, respectively.

Cartridge housing 130 includes a cylindrical sidewall 133, a first end wall 131, and a second end wall 132. The movement housing 230 has a structure similar to that of the movement housing 130, and includes a cylindrical side wall 233, a first end wall 231, and a second end wall 232, and the movement housing 130 is described as an example.

Specifically, either one of the first end wall 131 and the second end wall 132 is used to contact or abut against the skin of the user. The first end wall 131 and the second end wall 132 are arranged so that the first coil 111, the second coil 112, the main magnet 120 and other elements can be conveniently installed in the movement housing 130, and the installation and the manufacture of the housing are convenient. Further, interaction forces are generated between the first coil 111 and the second coil 112 of the movement module 100 and the main magnet 120. Since the first and second coils 111 and 112 are fixed on the first and second end walls 131 and 132, the force of the first and second coils 111 and 112 can be directly transmitted to the first and second end walls 131 and 132, and thus, any one of the first and second end walls 131 and 132 is in contact with or against the skin of the user, which enables the vibration to be transmitted to the user with high efficiency.

The edge region of any one of the two vibration-transmitting plates 140 may be connected to the opening end of the movement housing 130 by one or a combination of clamping, gluing, and the like. Of course, the first end wall 131 or the second end wall 132 and the movement housing 130 may also be an integrally molded structural component made of the same material.

The vibration-transmitting plates 140 may be installed such that the first end wall 131 presses the edge region of one vibration-transmitting plate 140 against one end of the cylindrical side wall 133, and the second end wall 132 presses the edge region of the other vibration-transmitting plate 140 against the other end of the cylindrical side wall 133.

On the basis of the above embodiment, further, the movement module 100 may further include a facing sleeve (not shown) connected to the first end wall 131 or the second end wall 132, where the facing sleeve is configured to contact the skin of the user, that is, the first end wall 131 or the second end wall 132 may contact the skin of the user through the facing sleeve. Wherein the shore hardness of the facing sleeve may be less than the shore hardness of the first end wall 131 or the second end wall 132, i.e. the facing sleeve may be softer than the first end wall 131 or the second end wall 132. For example: the facing cover is made of a soft material such as silicone, and the first end wall 131 or the second end wall 132 is made of a hard material such as polycarbonate or glass fiber reinforced plastic. So, with the wearing comfort level that improves earphone 1 to make core module 100 more laminate with user's skin, and then improve earphone 1's tone quality. Further, the facepiece may be removably attached to either the first end wall 131 or the second end wall 132 to facilitate replacement by a user.

Referring to fig. 3 and 8, optionally, in an embodiment, the inner sides of the first coil 111 and the second coil 112 (or the coil 210 and the coil 310) are respectively provided with the sub-magnet 150 (or the sub-magnet 250 and the sub-magnet 350) in a relatively fixed manner. When the secondary magnet 150 is a permanent magnet, the two permanent magnets are opposite in polarity toward the end of the primary magnet 120. Or the polarity of the secondary magnet 350 toward the primary magnet 320 is opposite to the polarity of the primary magnet 320 toward the secondary magnet 350. With this arrangement, when the two coils are not energized, the main magnet 120 can simultaneously receive the attraction or repulsion force of the permanent magnets on both sides, or receive only the repulsion force of the permanent magnets, so that the main magnet 120 can be stably suspended in the movement housing 130. In addition, stress in the two vibration transmission plates 140 can be reduced, which is advantageous for the vibration transmission plates 140 to transmit vibration.

Referring to fig. 3, 6 and 8 in combination, the secondary magnet 150 may also be a magnetically conductive post made of a soft magnetic material. The magnetic conductive columns can be magnetized when the first coil 111 and the second coil 112 are energized, so that the magnetic field of the whole body formed by the first coil 111, the second coil 112 and the magnetizer can be stronger than the magnetic field generated by the first coil 111 and the second coil 112 independently, and the magnetic field of the first coil 111 and the second coil 112 can be enhanced.

The structure of the vibration plate 140 is described in detail below by taking the vibration plate 140 as an example, and the vibration plate 240, the vibration plate 340 and the vibration plate 440 are the same:

in a non-operating state where no excitation signal is input to the coil, edge regions of the two vibration transmitting plates 140 and a central region of the same vibration transmitting plate 140 are not coplanar, respectively. Further, in a natural state of the damper blade 140, an edge region of the damper blade 140 and a central region of the damper blade 140 may not be coplanar to provide a preload force after the damper blade 140 is coupled to the main magnet 120 or the coil 210, respectively. The natural state of the present application may refer to a structural state in which the vibration plate 140 is mounted on the movement module 100 and the movement module 100 does not generate mechanical vibration due to no input of an excitation signal. Thus, due to the existence of the pretightening force, the situation that the elastic force is zero cannot occur simultaneously in the process of vibrating the movement module 100, which is beneficial to improving the stability and linearity of the vibration of the movement module 100. Therefore, the vibration plate 140 may be flat before being assembled to the movement module 100, so as to facilitate the processing.

Alternatively, the first-direction spacing of the edge region of the vibration-transmitting plate 140 from the central region of the vibration-transmitting plate 140 in the axial direction, i.e., the first direction, is greater than or equal to 0.4mm.

As an example, in a natural state, a distance between an edge region of the vibration conduction plate 140 and a central region of the vibration conduction plate 140 in the first direction may be greater than or equal to 0.4mm. The small distance easily causes the pretightening force provided by the vibration transmission piece 140 to be too small to meet the actual use requirement, and also easily causes the vibration transmission piece 140 to interfere with the main magnet 120 in the vibration process of the core module 100.

Referring to fig. 14 to 15 together, fig. 13 is a schematic top view of the vibration transfer plate 140 according to an embodiment of the present disclosure.

Referring to fig. 14 and 15, the vibration plate 140 may include a radial portion 141, and an inner fixing portion 142 and an outer fixing portion 143 connected to the radial portion 141 to allow the vibration plate 140 to be connected to one ends of the main magnet 120 and the magnetic conductive ring 480 through the inner fixing portion 142 and the outer fixing portion 143, respectively. The spoke 141 may include a plurality of spokes, such as three spokes shown in fig. 14, extending spirally outward from the center of the vibration-transmitting plate 140, so that the area between the inner fixing portion 142 and the outer fixing portion 143 is hollow, and the vibration-transmitting plate 140 has a predetermined elastic coefficient. Further, the spiral directions of the spokes at the same position of the two vibration-transmitting sheets 140 located at both sides of the main magnet 120 are opposite to each other when viewed in the vibration direction of the movement module 100. As such, when the coil and the main magnet 120 have a tendency to twist about their vibration directions during the vibration of the movement module 100, one of the two vibration transmitting pieces 140 may block such a tendency to twist, thereby avoiding unnecessary collision.

Further, in conjunction with fig. 15, the spoke-shaped portion 141 may be further divided into a first sub-region 140a and a second sub-region 140b nested with each other along the radial direction of the vibration-transmitting plate 140, and the spiral directions of the spokes in the first sub-region 140a and the second sub-region 140b are opposite to each other, for example, the spiral direction of the spokes in the first sub-region 140a located at the inner side is clockwise and the spiral direction of the spokes in the second sub-region 140b located at the outer side is counterclockwise in fig. 15. Thus, when the coil and the main magnet 120 have a twisting tendency around the vibration direction thereof during the vibration process of the movement module 100, the vibration transmitting plate 140 can block the twisting tendency due to the spokes with the inner and outer spiral directions being opposite to each other, thereby avoiding unnecessary collision. Wherein the vibration transfer plate 140 may further comprise a transition portion, and the spokes in the first sub-region 140a and the spokes in the second sub-region 140b are connected by the transition portion. Further, in the circumferential direction of the vibration transfer plate 140, a connection point between any one spoke in the first sub-region 140a and the transition portion may be located between connection points between two adjacent spokes in the second sub-region 140b and the transition portion.

Further, the vibration transmitting plate 140 may be arranged in a rectangular shape as viewed in the vibration direction of the movement module 100, so that corners of both may be selectively partially removed to accommodate the solder of the lead-out wire of the coil.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (10)

1. The utility model provides a core module, its characterized in that, the core module includes core housing, main magnet, vibration transmission piece and coil, vibration transmission piece connects the main magnet core housing, in order with the main magnet hangs in the core housing, the core housing includes tube-shape lateral wall, first end wall and second end wall, the coil is fixed first end wall orientation the inboard of second end wall, first end wall is used for contacting with user's skin or supports and lean on.

2. The movement module according to claim 1, wherein the inner side of the coil is relatively fixedly provided with a magnetic conduction post.

3. The movement module according to claim 2, wherein the number of the vibration transmission pieces is two, the two vibration transmission pieces elastically support the main magnets from opposite sides of the main magnets, a central region of the vibration transmission pieces is connected to the coil, and an edge region of the vibration transmission pieces is connected to the movement housing.

4. The movement module according to claim 3, wherein the first end wall and the cylindrical side wall are formed as an integral structural member, the second end wall is connected to an end of the cylindrical side wall facing away from the first end wall, an annular flange is provided on an inner side of the cylindrical side wall, an edge region of one of the vibration transmission plates is fixed to the annular flange, and the second end wall presses an edge region of the other vibration transmission plate against an end of the cylindrical side wall facing away from the first end wall.

5. The movement module according to claim 3, wherein in a non-operating state in which the coil does not receive an excitation signal, edge regions of the two vibration transmitting plates and a central region of the same vibration transmitting plate are not coplanar, respectively.

6. The movement module according to claim 5, wherein an axial distance between an edge region of the vibration transmission plate and a center region of the vibration transmission plate in an axial direction of the coil is greater than or equal to 0.4mm.

7. The movement module according to claim 5, wherein a center region of the vibration transmitting plate is farther from the coil than an edge region of the vibration transmitting plate in an axial direction of the coil.

8. The cartridge module of claim 3, wherein the vibration plate includes a web portion, and an inner fixing portion and an outer fixing portion connected to the web portion, the web portion including a plurality of spokes spirally extending outward from a center of the vibration plate, the inner fixing portion being connected to the main magnet, and the outer fixing portion being connected to the cartridge housing; and the spiral directions of the spokes of the two vibration transmission pieces at the same position are opposite to each other when the main magnet is observed in the axial direction.

9. The movement module of claim 1, wherein the second end wall presses an edge region of the vibration-transmitting plate against an end of the cylindrical side wall facing away from the first end wall.

10. An earphone, comprising a support component and the movement module set of any one of claims 1-9, wherein the support component is connected with the movement housing and is used for supporting the movement module set to be worn to a wearing position.

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