Earphone

Abstract

The earphone (100) comprises a shell assembly (10) and an air conduction loudspeaker (12), and the shell assembly (10) is provided with accommodating cavities (1001 and 1002) and a sound outlet hole (1080) used for communicating the accommodating cavities (1001 and 1002) with the external environment; the air conduction loudspeaker (12) comprises a magnetic circuit assembly (120), a voice coil (122) and a vibrating diaphragm (123), the magnetic circuit assembly (120) comprises a cover body (121) with an opening end (1211) and an annular flange (1212) which is arranged at the opening end (1211) of the cover body (121) and protrudes out of the outer circumferential surface of the cover body (121), the edge of the vibrating diaphragm (123) is fixed to the annular flange (1212) and covers the opening end (1211) of the cover body (121), the voice coil (122) is connected with the vibrating diaphragm (123), and the opening end (1211) of the cover body (121) protrudes out of the annular flange (1212). The diaphragm (123) is located on a side of the cover body (121) facing away from the sound outlet hole (1080). Through the mode, the space utilization rate of the shell assembly (10) can be effectively improved, the overall size of the whole shell assembly (10) can be reduced, and the sound quality can be effectively improved through the mode.

Description

earphone

[0001] This application claims priority to the Chinese patent application with application number 202310541798.X filed on May 12, 2023 and entitled “Headphones.”

Technical field

[0002] The present application relates to the technical field of electronic devices, and in particular to headphones. [Background Technology]

[0003] Headphones have been widely used in people's daily lives. They can be used in conjunction with electronic devices such as mobile phones and computers to provide users with an auditory feast. At present, the air conduction sound transmission principle has been widely used in headphones. Headphones that use air conduction sound transmission have the characteristics of high sound quality and are therefore loved by the majority of users. Generally, the existing air conduction speaker structure size is large. In order to optimize the sound output path of the air conduction speaker, headphones often need to design a larger shell component. The larger shell component will seriously increase the overall structural size of the headphones, thereby greatly affecting the user experience.

[0004] [Summary of the invention]

[0005] The present application provides an earphone comprising: a housing assembly and an air conduction speaker. The housing assembly is provided with a housing cavity and a sound outlet for connecting the housing cavity with the external environment. The air conduction speaker comprises a magnetic circuit assembly, a voice coil, and a diaphragm. The magnetic circuit assembly comprises a housing having an open end and an annular flange disposed at the open end of the housing and protruding from the outer circumference of the housing. The edge of the diaphragm is fixed to the annular flange and covers the open end of the housing. The voice coil is connected to the diaphragm, and the diaphragm is located on the side of the housing facing away from the sound outlet.

[0006] In some embodiments, an annular table is provided on the cavity wall of the accommodating cavity, and the annular flange is pressed on the annular table. The diaphragm divides the accommodating cavity into a first cavity portion and a second cavity portion. The first cavity portion is located on the side of the diaphragm away from the sound outlet, and the second cavity portion is located on the side of the diaphragm facing the sound outlet. The magnetic circuit assembly is located in the second cavity portion, and the shell assembly is provided with a pressure relief hole for connecting the first cavity portion with the external environment.

[0007] In some embodiments, the diaphragm is located on the side of the annular flange facing the annular table, and the earphone further includes a sealant that seals the gap between the side of the annular flange facing away from the annular table and the shell assembly.

[0008] In some embodiments, the annular flange cooperates with the housing assembly, and a glue-containing groove for containing the sealant is formed on a side of the annular flange facing away from the annular table.

[0009] In some embodiments, a sound guide hole is provided on the annular flange, and the sound guide hole is configured to connect the space enclosed by the diaphragm and the magnetic circuit assembly with the second cavity portion outside the magnetic circuit assembly.

[0010] In some embodiments, the shell assembly includes a first shell, a second shell and a third shell. The third shell cooperates with the first shell and / or the second shell along the vibration direction of the diaphragm. The third shell is used to accommodate the end of the cover body facing away from the diaphragm, and the sound outlet is arranged on the third shell; the cover body includes an end face and a peripheral side face, the end face is connected to the peripheral side face, and the end face is arranged opposite to the sound outlet; there is a first gap between the connection area between the end face and the peripheral side face located on the first side and the third shell, and there is a second gap between the connection area between the end face and the peripheral side face located on the second side and the third shell. The first gap is smaller than the second gap, and the first side and the second side are opposite to each other.

[0011] In some embodiments, in the worn state, the first side is located on the side of the magnetic circuit assembly close to the user's face.

[0012] In some embodiments, a portion of the end surface adjacent to the peripheral side surface on the first side is in contact with and fixed to the third shell, or a connection area between the end surface and the peripheral side surface on the first side is in contact with and fixed to the third shell.

[0013] In some embodiments, in a cross section perpendicular to the vibration direction of the diaphragm, the cover has a length direction and a width direction, the size of the cover along the length direction is larger than the size of the cover along the width direction, and the first side and the second side are arranged opposite to each other along the width direction.

[0014] In some embodiments, on the first side, an average distance between the annular flange and the third shell along the vibration direction of the diaphragm is greater than or equal to 0.5 mm, and on the second side, the second gap is greater than or equal to 0.5 mm.

[0015] In some embodiments, at least a portion of the outer surface of the third shell is inclined toward the first shell and the second shell in a direction from the second side to the first side.

[0016] In some embodiments, the cover is a magnetically conductive cover, the magnetic circuit assembly further includes a magnet disposed in the magnetically conductive cover, and the voice coil extends into a magnetic gap formed by the magnetically conductive cover and the magnet.

[0017] In some embodiments, the distance between the diaphragm and the wall of the accommodating cavity in the vibration direction of the diaphragm is greater than 0.8 mm.

[0018] In some embodiments, the shell assembly is provided with a first accommodating chamber and a second accommodating chamber that are isolated from each other, wherein the sealing performance of the first accommodating chamber is greater than the sealing performance of the second accommodating chamber; wherein the earphone also includes a bone conduction speaker, which is arranged in the first accommodating chamber; and an air conduction speaker is arranged in the second accommodating chamber.

[0019] In some embodiments, the shell assembly includes a first shell, a second shell and a third shell, the first shell and the second shell cooperate with each other to form a first accommodating cavity, the first shell and / or the second shell further form a part of the second accommodating cavity, and the third shell cooperates with the first shell and / or the second shell to form another part of the second accommodating cavity.

[0020] In some embodiments, a sound outlet hole communicating with the second accommodating cavity is provided on the third shell, and a pressure relief hole communicating with the second accommodating cavity is provided on the first shell and / or the second shell.

[0021] In some embodiments, the pressure relief hole is configured to extend obliquely toward the side where the first accommodating cavity is located.

[0022] In some embodiments, the vibration direction of the bone conduction speaker is cross-arranged with the vibration direction of the air conduction speaker, the first shell and the second shell cooperate with each other along the vibration direction of the bone conduction speaker, and the third shell cooperates with the first shell and / or the second shell along the vibration direction of the air conduction speaker.

[0023] In some embodiments, the bone conduction speaker includes a voice coil assembly and a magnet assembly. The voice coil assembly is arranged around the magnet assembly and is fixedly connected to the first shell and / or the second shell. The surface of the first shell and / or the second shell arranged opposite to the bone conduction speaker along the vibration direction of the bone conduction speaker is used to contact the user's skin and transmit bone conduction vibration.

[0024] In some embodiments, the voice coil assembly includes two groups of voice coils spaced apart along the central axis of the bone conduction speaker and a magnetic conductive cover wound around the periphery of the two groups of voice coils. The magnet assembly includes a magnet and two magnetic conductive plates. The two magnetic conductive plates are respectively arranged on the two side end surfaces of the magnet that are arranged opposite to each other along the central axis. The radial projections of the two magnetic conductive plates along the bone conduction speaker are respectively overlapped with the two groups of voice coils, and the power supply directions of the two groups of voice coils are opposite to each other.

[0025] In some embodiments, the headset is provided with a first operating mode and a second operating mode. In the first operating mode, the bone conduction speaker plays sound signals of a first frequency band, and the air conduction speaker plays sound signals of a second frequency band; in the second operating mode, the bone conduction speaker plays sound signals of a first frequency band and a second frequency band, and the first frequency band and the second frequency band are at least partially staggered in the frequency domain.

[0026] In some embodiments, the headset is further provided with a third working mode. In the third working mode, the air conduction speaker plays sound signals of the first frequency band and the second frequency band.

[0027] In some embodiments, the earphones include a wearing component, the shell component includes a first part and a second part, the first part is connected to the wearing component, the second part is detachably connected to the first part or the wearing component, the bone conduction speaker is arranged on the first part, and the air conduction speaker is arranged on the second part and can be removed from the wearing component in a detachable manner along with the second part.

[0028] In some embodiments, the first portion is provided with a first electrode portion, and the second portion is provided with a second electrode portion. When the first portion and the second portion are connected, the first electrode portion and the second electrode portion are in contact with each other and electrically connected.

[0029] In some embodiments, the first part is provided with a first connection part spaced apart from the first connection part, and the second part is provided with a second connection part. The first connection part and the second connection part are arranged to be detachably connected by at least one of snap connection, bonding, magnetic attraction and threaded connection.

[0030] In some embodiments, the shell assembly is provided with a first accommodating chamber and a second accommodating chamber that are isolated from each other; wherein, the earphone also includes a bone conduction speaker, which is arranged in the first accommodating chamber; and an air conduction speaker is arranged in the second accommodating chamber; wherein the shell assembly is provided with a pressure relief hole for connecting the second accommodating chamber with the external environment, and the pressure relief hole is arranged to extend toward the side where the first accommodating chamber is located.

[0031] In some embodiments, a projection of the pressure relief hole in a direction perpendicular to an arrangement direction of the first accommodating cavity and the second accommodating cavity at least partially overlaps with the first accommodating cavity.

[0032] In some embodiments, the pressure relief hole is configured to extend obliquely toward the side where the first accommodating chamber is located, and in the direction perpendicular to the arrangement direction of the first accommodating chamber and the second accommodating chamber, the size of the pressure relief hole gradually increases in the direction from the second accommodating chamber to the external environment.

[0033] In some embodiments, the housing assembly includes a partition wall for isolating the first accommodating chamber from the second accommodating chamber, and at least a portion of the partition wall extends toward the side where the first accommodating chamber is located and forms a portion of the hole wall of the pressure relief hole.

[0034] In some embodiments, in a cross section perpendicular to the vibration direction of the bone conduction speaker, the bone conduction speaker has a long side edge and a short side edge, the size of the long side edge is larger than the size of the short side edge, and the partition wall includes a first wall segment and a second wall segment, the first wall segment is arranged side by side with the long side edge, the second wall segment is connected to the first wall segment, and extends obliquely from the periphery of the connection between the long side edge and the short side edge toward the side where the first accommodating cavity is located, and the second wall segment is used to form a partial hole wall of the pressure relief hole.

[0035] In some embodiments, the shell assembly includes a first shell, a second shell and a third shell, the partition wall is arranged on the first shell and / or the second shell, the first shell and the second shell cooperate with each other to form a first accommodating chamber and a pressure relief hole, the first shell and / or the second shell further form a part of the second accommodating chamber, and the third shell cooperates with the first shell and / or the second shell to form another part of the second accommodating chamber.

[0036] In some embodiments, the vibration direction of the bone conduction speaker and the vibration direction of the air conduction speaker are arranged to cross each other, the first shell and the second shell cooperate with each other along the vibration direction of the bone conduction speaker, and the third shell cooperates with the first shell and / or the second shell along the vibration direction of the air conduction speaker.

[0037] In some embodiments, a partition wall is arranged on a first shell, and the first shell is provided with a first sub-accommodating chamber and a second sub-accommodating chamber located on opposite sides of the partition wall. The opening direction of the first sub-accommodating chamber is arranged along the wall surface of the partition wall, and the opening direction of the second sub-accommodating chamber is arranged cross-wise with the wall surface of the partition wall. The second shell is provided with a third sub-accommodating chamber, and the second shell cover is provided at the opening end of the first sub-accommodating chamber, and the third sub-accommodating chamber and the first sub-accommodating chamber cooperate to form a first accommodating chamber; the third shell is provided with a fourth sub-accommodating chamber, and the third shell cover is provided at the opening end of the second sub-accommodating chamber, and the fourth sub-accommodating chamber and the second sub-accommodating chamber cooperate to form a second accommodating chamber.

[0038] In some embodiments, the air conduction speaker includes a diaphragm, which divides the second accommodating cavity into a first cavity portion located on the side of the diaphragm away from the partition wall and a second cavity portion located between the diaphragm and the partition wall. The pressure relief hole is connected to the second cavity portion, and the shell assembly is also provided with a sound outlet hole connected to the first cavity portion.

[0039] In some embodiments, the air conduction speaker further includes a magnetic circuit assembly and a voice coil, the magnetic circuit assembly includes a cover body having an open end and an annular flange arranged at the open end of the cover body and protruding from the outer peripheral surface of the cover body, the edge of the diaphragm is fixed to the side of the annular flange facing the open end and covering the open end of the cover body, the voice coil is connected to the diaphragm, and the diaphragm is arranged away from the sound outlet compared to the cover body.

[0040] In some embodiments, the center of the pressure relief hole is no higher than the center of the sound outlet hole, and the line connecting the center of the pressure relief hole and the center of the sound outlet hole points to the ear of the user when the wearer is in the wearing state; and / or, the angle between the line connecting the center of the pressure relief hole and the center of the sound outlet hole and the user's coronal axis when the wearer is in the wearing state is ≥0° and <90°, and the angle between the line connecting the center of the pressure relief hole and the center of the sound outlet hole and the user's vertical axis when the wearer is in the wearing state is >0° and ≤90°. 。

[0041] In some embodiments, the central axis of the bone conduction speaker and the central axis of the air conduction speaker are skew lines, and in a direction perpendicular to the central axis of the bone conduction speaker and the central axis of the air conduction speaker, the central axis of the bone conduction speaker is farther away from the pressure relief hole than the central axis of the air conduction speaker.

[0042] In some embodiments, the distance between the central axis of the bone conduction speaker and the central axis of the air conduction speaker is 0.2-1.2 mm.

[0043] The beneficial effects of the present application are as follows: the above-mentioned setting method, by setting the annular flange on the side away from the sound outlet, and setting the diaphragm on the side away from the sound outlet, can bring the diaphragm and the annular flange closer to the interior of the shell assembly, thereby realizing that the structure of the air conduction speaker with a larger radial dimension is set away from the sound outlet, while the smaller part of the air conduction speaker can be close to the sound outlet. Compared with the structure of the traditional speaker in which the diaphragm must face the sound outlet, this reverse setting structure of the air conduction speaker can effectively make the size of the part of the shell assembly close to the sound outlet smaller, so that the size of the shell assembly from the middle area to the part of the sound outlet can be reduced (that is, the radial size of the outer peripheral surface of the shell assembly can be gradually reduced), thereby making the structure more compact, effectively improving the space utilization of the shell assembly, and reducing the overall volume of the entire shell assembly. Moreover, this reverse setting structure can optimize the sound path, thereby improving the sound quality.

Brief Description of the Drawings

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0045] FIG1 is a schematic diagram of the assembled three-dimensional structure of an embodiment of the earphone of the present application;

[0046] FIG2 is a schematic diagram of a three-dimensional structure of a portion of the movement assembly and the wearing assembly shown in FIG1 ;

[0047] FIG3 is an exploded schematic diagram of the structure of the movement assembly shown in FIG2 ;

[0048] FIG4 is a schematic cross-sectional view of the movement assembly shown in FIG2 along the AA section line;

[0049] FIG5 is a schematic cross-sectional view of the movement assembly shown in FIG2 along the BB section line;

[0050] FIG6 is a schematic diagram of the three-dimensional structure of the bone conduction speaker shown in FIG3 ;

[0051] FIG7 is an exploded schematic diagram of the structure of the bone conduction speaker shown in FIG3 ;

[0052] FIG8 is a schematic cross-sectional view of the bone conduction speaker shown in FIG6 along the CC section line;

[0053] FIG9 a is a schematic diagram of sound signals of the earphone shown in FIG1 in a first frequency band and a second frequency band;

[0054] FIG9 b is a schematic diagram of the frequency of electrical signals input to the bone conduction speaker and the air conduction speaker of the earphone shown in FIG1 in the first working mode;

[0055] FIG10 a is a schematic structural diagram of a detachable bone conduction speaker and an air conduction speaker of the earphone shown in FIG1 ;

[0056] FIG10b is a schematic diagram of an exemplary structure of the bone conduction speaker and the air conduction speaker shown in FIG10a;

[0057] FIG11 is a schematic diagram of the three-dimensional structure of the air conduction speaker shown in FIG3 ;

[0058] FIG12 is an exploded schematic diagram of the structure of the air conduction speaker shown in FIG11;

[0059] FIG13 is a schematic diagram of the front view of the vibration transmission piece shown in FIG7;

[0060] FIG14 is a schematic diagram of a partial cross-sectional structure of the bone conduction speaker shown in FIG8;

[0061] FIG15 is a schematic structural diagram of the annular fixing portion of the vibration transmission plate shown in FIG13;

[0062] FIG16 is a schematic structural diagram of the connection between the connecting rod assembly and the central fixing portion of the vibration transmission plate shown in FIG13;

[0063] FIG17 is another exploded structural schematic diagram of the movement assembly shown in FIG2 ;

[0064] FIG18 is a schematic structural diagram of the bone conduction speaker shown in FIG17;

[0065] FIG19 is a schematic diagram of a partial exploded structure of the movement assembly shown in FIG17;

[0066] FIG20 is another cross-sectional structural diagram of the movement assembly shown in FIG2 along the BB section line;

[0067] FIG21 is an enlarged structural diagram of the F region shown in FIG20 ;

[0068] FIG22 is another partial exploded structural schematic diagram of the movement assembly shown in FIG18;

[0069] FIG23 is a schematic cross-sectional view of the structure of the movement assembly shown in FIG2 ;

[0070] FIG24 is a schematic diagram of a partial cross-sectional structure of the movement assembly shown in FIG23. [Specific implementation method]

[0071] In order to enable those skilled in the art to better understand the technical solution of the present application, the charging box provided by the present application is further described in detail below with reference to the accompanying drawings and specific embodiments. It is understandable that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0072] The terms "first," "second," and the like in this application are used to distinguish between different objects, not to describe a particular order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0073] The following earphone embodiment of the present application describes an exemplary structure of the earphone 100.

[0074] As shown in Figure 1, the earphone 100 may include a core component 1, an ear hook component 2 and a back hook component 3. The number of core components 1 can be two. The two core components 1 are used to transmit vibration and / or sound to the left ear and right ear of the user respectively. The two core components 1 can be the same or different. For example, one core component 1 can be provided with a microphone, while the other core component 1 can not be provided with a microphone. For another example, one core component 1 can be provided with a button and a corresponding circuit board, while the other core component 1 can not be provided with the button and the corresponding circuit board. The two core components 1 can be the same in the core module (such as a speaker module). The core component 1 described later in this article can be considered to be described in detail by taking one of the two core components 1 as an example. The number of ear hook components 2 can be two, and the two ear hook components 2 can be hung on the left ear and right ear of the user respectively, so that the core component 1 can fit the user's face. For example, one ear hook component 2 can be provided with a battery, and the other ear hook component 2 can be provided with a control circuit, etc. One end of the earhook assembly 2 is connected to the core assembly 1, and the other end of the earhook assembly 2 is connected to the back-hook assembly 3. The back-hook assembly 3 connects the two earhook assemblies 2. The back-hook assembly 3 is designed to wrap around the back of the user's neck or head and provide a clamping force, allowing the two core assemblies 1 to clamp to the sides of the user's face and the earhook assemblies 2 to be more securely attached to the user's ears. Of course, the earphones 100 can also include no back-hook assembly 3, and the core assembly 1 can be worn on the user's ears via the earhook assemblies 2.

[0075] The following content mainly describes the structure of the core component 1 and other parts of the earphone 100 by way of example.

[0076] As shown in FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 , the core assembly 1 may include a housing assembly 10 , a bone conduction speaker 11 and an air conduction speaker 12 .

[0077] Optionally, the housing assembly 10 may be provided with a mutually isolated accommodating chamber 1001 and an accommodating chamber 1002. The housing assembly 10 may also be referred to as the core housing assembly 10. The bone conduction speaker 11 is disposed within the accommodating chamber 1001, which may be referred to as the first accommodating chamber. The air conduction speaker 12 is disposed within the accommodating chamber 1002, which may be referred to as the second accommodating chamber.

[0078] The air conduction speaker 12 transmits sound to the user's ear canal through the principle of air vibration, while the bone conduction speaker 11 transmits sound to the user through bone conduction vibration. Optionally, the sealing performance of the accommodating chamber 1001 is greater than that of the accommodating chamber 1002. Sealing performance can be considered as airtightness. Optionally, the accommodating chamber 1001 can be set as a completely sealed accommodating chamber, while the accommodating chamber 1002 can be set as a accommodating chamber with a higher sealing performance while ensuring the sound production of the air conduction speaker 12. In the above manner, since the housing chamber 1002 in which the air conduction speaker 12 is placed needs to be connected to the outside world to facilitate airborne sound wave conduction, the bone conduction speaker 11 and the air conduction speaker 12 are separately provided. Instead of placing the bone conduction speaker 11 within the housing chamber 1002, the bone conduction speaker 11 is placed solely within the housing chamber 1001. Since the housing chambers 1001 are independent of each other, the sealing of the housing chamber 1001 can be enhanced, effectively improving the sealing effect of the bone conduction speaker 11, thereby preventing damage to the bone conduction speaker 11 from external environmental factors while maintaining the sound quality of the air conduction speaker 12. Furthermore, when the bone conduction speaker 11 and the air conduction speaker 12 are operating simultaneously in the earphone 100, the bone conduction speaker 11 and the air conduction speaker 12 are respectively placed within the housing chamber 1001 and the housing chamber 1002, effectively reducing mutual interference between the bone conduction speaker 11 and the air conduction speaker 12, thereby effectively improving the sound quality of the earphone 100.

[0079] 2 and 3 , the housing assembly 10 may include a housing 101, a housing 102, and a housing 103, wherein the housing 101 and the housing 102 cooperate with each other to form a receiving chamber 1001. The housing 101 and / or the housing 102 further form a portion of the receiving chamber 1002, and the housing 103 may form another portion of the receiving chamber 1002. Furthermore, the housing 103 cooperates with the housing 101 and / or the housing 102 to form the receiving chamber 1002.

[0080] The housing assembly 10 can be composed of a housing 101, a housing 102, and a housing 103 that cooperate with each other. The housing 101 and the housing 102 cooperate to form a receiving cavity 1001, and the housing 103 cooperates with the housing 101 to form a receiving cavity 1002. The housing assembly 10, composed of the housing 101, the housing 102, and the housing 103 of the above-described structure, can make the structure of the movement assembly 1 compact while also facilitating the assembly of the movement assembly 1, thereby improving the assembly efficiency of the movement assembly 1. In some embodiments, the housing 101 can be referred to as the first housing; the housing 102 can be referred to as the second housing; and the housing 103 can be referred to as the third housing.

[0081] Of course, a part of the accommodating chamber 1002 can also be set in the shell 102, and the shell 103 and the shell 102 cooperate with each other to form the accommodating chamber 1002, or a part of the accommodating chamber 1002 can be formed by cooperating with the shell 101 and the shell 102, and the shell 103, the shell 101 and the shell 102 cooperate with each other to form the accommodating chamber 1002.

[0082] Through the above-mentioned structural setting, the bone conduction speaker 11 and the air conduction speaker 12 can be placed in the independent accommodating cavity 1001 and the accommodating cavity 1002 respectively, thereby reducing the mutual influence between the operations of the bone conduction speaker 11 and the air conduction speaker 12. While ensuring the acoustic output of the air conduction speaker 12 and the bone conduction speaker 11 as much as possible, the structure of the movement assembly 1 can be made compact, thereby miniaturizing the size of the movement assembly 1, and facilitating the assembly of the movement assembly 1, thereby improving the assembly efficiency of the movement assembly 1.

[0083] Optionally, the vibration direction of the bone conduction speaker 11 is arranged to intersect with the vibration direction of the air conduction speaker 12, and the housing 101 and the housing 102 cooperate with each other along the vibration direction of the bone conduction speaker 11. The housing 103 cooperates with the housing 101 and / or the housing 102 along the vibration direction of the air conduction speaker 12.

[0084] Specifically, the vibration direction of the bone conduction speaker 11 is arranged crosswise with the vibration direction of the air conduction speaker 12. The vibration direction of the bone conduction speaker 11 may also be referred to as the bone conduction vibration direction X1 in this article, and the vibration direction of the air conduction speaker 12 may also be referred to as the air conduction vibration direction X2 in this article, wherein the bone conduction vibration direction X1 and the air conduction vibration direction X2 are not parallel to each other but are arranged crosswise. For example, the bone conduction vibration direction X1 and the air conduction vibration direction X2 are arranged perpendicularly or approximately perpendicularly (for example, 90°±10°). When the bone conduction speaker 11 and the air conduction speaker 12 are working simultaneously, the bone conduction speaker 11 and the air conduction speaker 12 vibrate along the bone conduction vibration direction X1 and the air conduction vibration direction X2 respectively. Since the vibration directions of the two are arranged crosswise, the influence of the vibration of the bone conduction speaker 11 on the sound quality of the air conduction speaker 12 caused by the vibration of the two in the same direction can be effectively alleviated. Further, the housing 101 and the housing 102 can be assembled with each other along the bone conduction vibration direction X1, and the housing 103 and the housing 101 can be assembled with each other along the air conduction vibration direction X2. For example, the housing 101 and the housing 103 may cooperate to form the accommodating chamber 1002, and the housing 103 may only cooperate with the housing 101 along the air-conducted vibration direction X2. Of course, the housing 103 may not cooperate with the housing 101 to form the accommodating chamber 1002, but the housing 103 and other housings may cooperate to form the accommodating chamber 1002 along the air-conducted vibration direction X2, or the housing 1003 may cooperate with the housing 101 and other housings to form the accommodating chamber 1002. This method is beneficial to the assembly of the movement assembly 1, thereby improving the assembly efficiency of the movement assembly 1.

[0085] 6 and 7 , the bone conduction speaker 11 optionally includes a voice coil assembly 111 and a magnet assembly 112. The voice coil assembly 111 is disposed around the magnet assembly 112 and is fixedly connected to the housing 101 and / or the housing 102. The surface of the housing 101 and / or the housing 102, which is located opposite to the bone conduction speaker 11 along the vibration direction of the bone conduction speaker 11, is configured to contact the user's skin and transmit bone conduction vibrations.

[0086] Optionally, further referring to Figures 6, 7, and 8, the voice coil assembly 111 includes two voice coils 1110 spaced apart along the central axis Z of the bone conduction speaker 11, and a magnetic shield 1111 wound around the two voice coils 1110. The magnet assembly 112 includes a magnet 1121 and two magnetic conductive plates 1122. The two magnetic conductive plates 1122 are disposed on opposite end surfaces of the magnet 1121 along the central axis Z. The radial projections of the two magnetic conductive plates 1122 along the bone conduction speaker 11 overlap the two voice coils 1110, and the two voice coils 1110 are energized in opposite directions. The central axis Z of the bone conduction speaker 11 coincides with the vibration direction of the bone conduction speaker 11 (i.e., the bone conduction vibration direction X1), as described below.

[0087] Optionally, as shown in Figures 5, 7 and 8, the outer circumferential surface of the magnetic cover 1111 can be in contact with the shell assembly 10 and / or fixedly connected to the shell assembly 10 by adhesive, so that the bone conduction speaker 11 and the shell assembly 10 can achieve hard connection / hard contact, so that the bone conduction speaker 11 can be firmly accommodated in the accommodating cavity 1001. Furthermore, the outer circumferential surface of the magnetic cover 1111 can be in full contact with the shell assembly 10, or it can be in partial contact with the shell assembly 10. Further, the outer circumferential surface of the magnetic cover 1111 can be partially connected to the shell assembly 10, while another part can be fixedly connected to the shell assembly 10 by adhesive. As for partial contact with the shell assembly 10, the outer circumferential surface of the shell assembly 10 and / or the magnetic cover 1111 can be provided with supporting ribs, supporting protrusions and other structures to achieve partial contact between the two.

[0088] For example, the outer circumference of the magnetic shield 1111 contacts the housing assembly 10 and / or is fixedly connected to the housing assembly 10 by adhesive at least in two normal directions perpendicular to each other (normal directions of the outer circumference of the magnetic shield 111). Optionally, the outer circumference of the magnetic shield 1111 contacts the housing assembly 10 and / or is fixedly connected to the housing assembly 10 by adhesive in the first direction. The outer circumference of the magnetic shield 1111 contacts the housing assembly 10 and / or is fixedly connected to the housing assembly 10 by adhesive in the second direction. For example, the first direction includes a first positive direction and a first negative direction opposite to each other. For example, the outer circumference of the magnetic shield 1111 contacts the housing assembly 10 and / or is fixedly connected to the housing assembly 10 by adhesive in the first positive direction and / or the first negative direction. The second direction may include two second positive directions and a second negative direction opposite to each other. The outer circumference of the magnetic shield 1111 may contact the housing assembly 10 and / or be fixedly connected to the housing assembly 10 by adhesive in the second positive direction and / or the second negative direction. The first direction is perpendicular to the second direction. The verticality mentioned here allows a certain deviation, for example, 80° to 100° can be considered vertical.

[0089] As shown in Figure 7, the outer peripheral surface of the magnetic cover 1111 may include, for example, two first outer side surfaces arranged opposite to each other and two second outer side surfaces arranged opposite to each other. Each second outer side surface is located between the two first outer side surfaces, and the two second outer side surfaces and the two first outer side surfaces form an annular structure. For example, each first outer side surface may be in contact with the shell assembly 10 and / or fixedly connected to the shell assembly 10 by adhesive, and each second outer side surface may be in contact with the shell assembly 10 and / or fixedly connected to the shell assembly 10 by adhesive. For example, the two first outer side surfaces may be arranged opposite to each other in a first direction, and the two second outer side surfaces may be arranged opposite to each other in a second direction. The first direction may be, for example, the direction X2 shown in Figure 5, and the second direction may be the direction LD shown in Figure 5.

[0090] Optionally, each second outer side surface and the two first outer side surfaces can be directly connected at an angle (corner), for example, vertically. Each second outer side surface and the two first outer side surfaces can also be connected in an arcuate transition, for example, by an arcuate connecting surface, so that there is at least one arcuate connecting surface between the two second outer side surfaces and the two first outer side surfaces, for example, the number of arcuate connecting surfaces can be four. Furthermore, at least one arcuate connecting surface contacts the shell component 10 or is fixedly connected to the shell component 10 by adhesive, or four arcuate connecting surfaces contact the shell component 10 or are fixedly connected to the shell component 10 by adhesive.

[0091] With this arrangement, hard contact / hard connection is achieved between the bone conduction speaker 11 and the fixing assembly 10, which can effectively improve the overall strength of the shell assembly 10, make the vibration transmission efficiency between the two higher, and thus reduce noise and sound leakage.

[0092] Referring to FIG9a , the headset 100 is optionally provided with a first operating mode and a second operating mode. In the first operating mode, the bone conduction speaker 11 plays sound signals in the first frequency band P1, and the air conduction speaker 12 plays sound signals in the second frequency band P2. In the second operating mode, the bone conduction speaker 11 plays sound signals in the first frequency band P1 and the second frequency band P2, and the first frequency band P1 and the second frequency band P2 are at least partially offset in the frequency domain. For example, if the first frequency band P1 and the second frequency band P2 do not overlap in the frequency domain, the frequency range of the first frequency band P1 is higher than the frequency range of the second frequency band P2. For example, if the first frequency band P1 and the second frequency band P2 partially overlap in the frequency domain, the frequency range of the offset portion of the first frequency band P1 is higher than the frequency range of the offset portion of the second frequency band P2.

[0093] In some embodiments, the earphone 100 may include a crossover point n (as shown in FIG9a ), the first frequency band P1 may include a frequency band greater than the crossover point n, and the second frequency band P2 may include a frequency band less than the crossover point n. The crossover point n is located at the overlapping intersection of the first frequency band P1 and the second frequency band P2. When the earphone 100 is in the first working mode, the bone conduction speaker 11 and the air conduction speaker 12 work together, and the bone conduction speaker 11 mainly outputs the sound signal of the first frequency band P1, and the air conduction speaker 12 mainly outputs the sound signal of the second frequency band P2. That is, the operating frequency band of the bone conduction speaker 11 may include a frequency band greater than the crossover point n, and the operating frequency band of the air conduction speaker 12 may include a frequency band less than the crossover point n.

[0094] Referring to Figure 9b , Figure 9b illustrates the electrical signal frequency band P3 input to the bone conduction speaker 11 and the electrical signal frequency band P4 input to the air conduction speaker 12, respectively, when the earphone 100 is operating in the first operating mode. In some embodiments, the electrical signal frequency band P3 of the bone conduction speaker 11 and the electrical signal frequency band P2 of the air conduction speaker 12 have an overlapping intersection point m, and the crossover frequency point n is within a range of 0.5 to 3 octaves of the overlapping intersection point m. For example, if the overlapping intersection point m is 300 Hz, the crossover frequency point n can be within a range of 150 Hz to 900 Hz, such as 500 Hz.

[0095] In some embodiments, the first frequency band P1 may be a mid-high frequency or a high frequency, and the second frequency band P2 may include a mid-low frequency or a low frequency. For example, the low frequency range is 30-150 Hz, the mid-low frequency range is 150-500 Hz, and the mid-high frequency range is 500-5 kHz. The high frequency range is 5 kHz-16 kHz.

[0096] When the earphone 100 is in the first operating mode, the bone conduction speaker 11 and the air conduction speaker 12 work together, with the bone conduction speaker 11 primarily outputting sound signals in the first frequency band P1, while the air conduction speaker 12 primarily outputting sound signals in the second frequency band P2. The earphone 100 utilizes the bone conduction speaker 11 and the air conduction speaker 12 to work together, with the sound signals in the first frequency band P1 output by the bone conduction speaker 11 and the sound signals in the second frequency band P2 output by the air conduction speaker 12 fitting together to form a relatively complete sound signal that is transmitted to the user's ear. This approach effectively improves the mid- and low-frequency sound quality of the sound signal emitted by the earphone 100, thereby effectively improving the overall sound quality of the sound signal emitted by the earphone 100. Furthermore, the bone conduction speaker 11 can also work independently. That is, in the second operating mode, the air conduction speaker 12 is not operational, and the bone conduction speaker 11 can simultaneously output sound signals in the first frequency band P1 and the second frequency band P2. For example, when the earphone 100 is working when the user is exercising and sweating a lot or when the user is working in a humid and rainy environment, the earphone 100 actively cuts off the operation of the air conduction speaker 12 and can only use the bone conduction speaker 11 to produce sound. This ensures the overall sound quality of the sound signal emitted by the earphone 100 while preventing the air conduction speaker 12 from being eroded by adverse factors such as sweat or rain, thereby effectively improving the reliability and stability of the earphone 100.

[0097] Optionally, the headset 100 is further provided with a third operating mode. In the third operating mode, the air conduction speaker 12 plays sound signals in the first frequency band P1 and the second frequency band P2. Specifically, if the headset 100 detects that the bone conduction speaker 11 is damaged or the special environment in which the headset 100 is currently located is not conducive to the operation of the bone conduction speaker 11, the headset 100 switches to the third operating mode. In the third operating mode, the air conduction speaker 12 operates alone, simultaneously outputting sound signals in the first frequency band P1 and the second frequency band P2, to ensure that the headset 100 can still normally output high-quality sound signals in this operating mode.

[0098] The following describes another embodiment of the housing assembly 10 as shown in Figures 10a and 10b. Different from the above-mentioned embodiment of the housing assembly 10, the housing assembly 10 may include a first portion 1003 and a second portion 1004, wherein the first portion 1003 is connected to the wearable assembly 27 (as shown in Figures 1 and 2). The second portion 1004 is detachably connected to the first portion 1003 or the wearable assembly 27, the bone conduction speaker 11 is disposed on the first portion 1003, and the air conduction speaker 12 is disposed on the second portion 1004 and can be detachably removed from the wearable assembly 27 along with the second portion 1004. In other words, the housing assembly 10 includes a detachable first portion 1003 and a second portion 1004, wherein the bone conduction speaker 11 is disposed on the first portion 1003, the air conduction speaker 12 is disposed on the second portion 1004, and the second portion 1004 is detachably connected to the first portion 1003 or the wearable assembly 27. This arrangement allows the air conduction speaker 12 to be independently detached from the remaining components of the earphone 100. After the air conduction speaker 12 is detached, the bone conduction speaker 11 can continue to operate. This detachability effectively improves the environmental adaptability of the earphone 100. In extreme environments, such as when a user is sweating profusely during exercise or in a humid or rainy environment, the air conduction speaker 12 can be quickly removed from the earphone 100 to prevent damage. At the same time, the earphone 100 can continue to output high-quality audio signals thanks to the bone conduction speaker 11. When only the bone conduction speaker 11 is operating in the earphone 100, the earphone 100 can control the operation of the bone conduction speaker 11 using the second operating mode described above, ensuring the quality of the audio signals output by the earphone 100. Furthermore, the second portion 1004 is detachably connected to the first portion 1003 or the wearable assembly 27, making it easier to replace the second portion 1004. This allows for replacement of air conduction speakers 12 with different performance characteristics and facilitates maintenance.

[0099] As shown in FIG10b , the earphone 100 optionally includes a wire assembly for supplying power and / or audio signals to the bone conduction speaker 11 and the air conduction speaker 12 . The wire assembly can be connected to the first portion 1003 . The first portion 1003 can be provided with a first electrode portion 10031 , and the second portion 1004 can be provided with a second electrode portion 10041 . After the first portion 1003 and the second portion 1004 are detachably assembled, the first electrode portion 10031 and the second electrode portion 10041 are in contact and electrically connected. The first electrode portion 10031 and the second electrode portion 10041 can have various structural forms. For example, the first electrode portion 10031 can include at least two first electrode contacts. The second electrode portion 10041 can include at least two electrode contacts, and the at least two first electrode contacts and the at least two second electrode contacts can correspond one to one. For example, one of the first electrode portion 10031 and the second electrode portion 10041 may include a pogo pin, and the other may include a spring sheet or a contact, and the two are electrically connected through the contact between the spring pin and the spring sheet or the contact. For example, the first electrode portion 10031 and the second electrode portion 10041 each include a spring sheet, and the electrical connection is achieved through the elastic abutment of the spring sheets of the two. Of course, the first electrode portion 10031 and the second electrode portion 10041 can also have other forms. For example, the first electrode portion 10031 can include a plurality of ring electrodes nested in each other, and the second electrode portion 10041 can also include a plurality of ring electrodes nested in each other. The first electrode portion 10031 and the second electrode portion 10041 can be electrically connected through the one-to-one contact of the ring electrodes of the two. The first electrode portion 10031 and the second electrode portion 10041 are not limited to the examples listed above. The first electrode portion 10031 and the second electrode portion 10041 are configured to ensure that the first part 1003 and the second part 1004 are electrically connected during assembly and can be separated from each other after disassembly.

[0100] In some embodiments, the wire assembly can be coupled to the bone conduction speaker 11 and the first electrode portion 10031, and the second electrode portion 10041 can be coupled to the air conduction speaker 12. After the second portion 1004 and the first portion 1003 are assembled, the first electrode portion 10031 and the second electrode portion 10041 are in contact and electrically connected, so that the wire assembly can also provide power and / or audio signals to the air conduction speaker 12.

[0101] In other embodiments, the first electrode portion 10031 can be coupled to the bone conduction speaker 11, and the second electrode portion 10041 can be coupled to the air conduction speaker 12. A wire assembly is coupled to the at least two first electrode portions 10031. The wire assembly can supply power and / or provide audio signals to the bone conduction speaker 11 through the first electrode portion 10031, and can also supply power and / or provide audio signals to the air conduction speaker 12 through contact between the first electrode portion 10031 and the second electrode portion 10041.

[0102] Of course, the above-mentioned wire group can also be connected to the second part 1004, and the first part 1003 can be detachably connected to the second part 1004. The specific connection relationship can refer to the above description.

[0103] The first portion 1003 is provided with a first connecting portion 10032, and the second portion 1004 is provided with a second connecting portion 10042. The first connecting portion 10032 and the second connecting portion 10042 can be configured to be detachably connected by means of snap connection, bonding, magnetic attraction, threaded connection, etc. For example, the first connecting portion 10032 can be configured as one of a slot and a buckle, and the second connecting portion 10042 can be configured as the other of the slot and the buckle. The first portion 1003 and the second portion 1004 are detachably connected by the buckle snapping into the slot, thereby bringing the first electrode portion 10031 and the second electrode portion 10041 into contact with each other, achieving electrical connection.

[0104] 3 and 5 , optionally, the housing assembly 10 may further be provided with a pressure relief hole 1081 for connecting the accommodating chamber 1002 with the external environment. The pressure relief hole 1081 is configured to extend toward the side where the accommodating chamber 1001 is located. Specifically, the bone conduction speaker 11 and the air conduction speaker 12 may be respectively accommodated in the accommodating chamber 1001 and the accommodating chamber 1002. The housing assembly 10 is provided with a pressure relief hole 1081 for relieving pressure for the air conduction speaker 12. The pressure relief hole 1081 connects the accommodating chamber 1002 with the external environment, and the pressure relief hole 1081 extends from the connection with the accommodating chamber 1002 toward the side where the accommodating chamber 1001 is located. For example, part of the hole wall of the pressure relief hole 1081 extends from the connection with the accommodating chamber 1002 toward the side where the accommodating chamber 1001 is located. This arrangement effectively reduces the amount of housing space occupied by pressure relief hole 1081 outside accommodating chamber 1002, effectively utilizing the space between accommodating chambers 1001 and 1002. This improves the space utilization of housing assembly 10, allowing housing assembly 10 to be more compact and reasonable while still meeting the sound generation requirements of air conduction speaker 12. Furthermore, this oblique extension increases the size of pressure relief hole 1081, thereby providing better sound quality for air conduction speaker 12.

[0105] Optionally, the projection of the pressure relief hole 1081 in the direction X3 (as shown in FIG5 ) perpendicular to the arrangement direction of the accommodating cavity 1001 and the accommodating cavity 1002 at least partially overlaps with the accommodating cavity 1001. The direction X3 perpendicular to the arrangement direction of the accommodating cavity 1001 and the accommodating cavity 1002 can be understood as a direction perpendicular to the bone conduction vibration direction X1 and the air conduction vibration direction X2. The projection of the pressure relief hole 1081 in the vertical direction X3 at least partially overlaps with the accommodating cavity 1001, which can ensure that the size of the pressure relief hole 1081 meets the pressure relief conditions of the air conduction speaker 12, and can also effectively reduce the spatial position of the pressure relief hole 1081 in the accommodating cavity 1002 and the occupancy of its shell part, thereby effectively reducing the structural size of the shell assembly 10 located at the air conduction speaker 12.

[0106] Furthermore, the pressure relief hole 1081 is configured to extend obliquely toward the side of the accommodating chamber 1001. In a direction X3 perpendicular to the arrangement of the accommodating chambers 1001 and 1002, the size of the pressure relief hole 1081 gradually increases from the accommodating chamber 1002 toward the external environment. In other words, while the pressure relief hole 1081 extends obliquely toward the side of the accommodating chamber 1001, its size gradually increases from the accommodating chamber 1002 toward the external environment. This allows for smoother gas discharge and reduces the gas velocity, thereby improving the sound quality of the earphone 100.

[0107] 3 , 4 and 5 , the shell assembly 10 may include a partition wall 1012 for isolating the accommodating cavity 1001 and the accommodating cavity 1002 , at least a portion of the partition wall 1012 extends toward the side where the accommodating cavity 1001 is located, and forms a portion of the hole wall of the pressure relief hole 1081 .

[0108] Specifically, in a cross section perpendicular to the vibration direction of the bone conduction speaker 11 (i.e., the bone conduction vibration direction X1), the bone conduction speaker 11 has a long side edge 1101 and a short side edge 1102, with the long side edge 1101 being larger than the short side edge 1102. The partition wall 1012 includes a wall segment 1013 and a wall segment 1014. The wall segment 1013 is arranged side by side with the long side edge 1101. The wall segment 1014 is connected to the wall segment 1013 and extends obliquely from the periphery of the junction of the long side edge 1101 and the short side edge 1102 toward the side where the accommodating cavity 1001 is located. The wall segment 1014 is used to form a portion of the hole wall of the pressure relief hole 1081. In some embodiments, the wall segment 1013 can be referred to as the first wall segment, and the wall segment 1014 can also be referred to as the second wall segment.

[0109] The spatial layout and structural arrangement of the pressure relief holes 1081 can be implemented using the housing assembly 10 described above. Of course, the spatial layout and structural arrangement of the pressure relief holes 1081 can also be implemented using other solutions, which will not be discussed in detail here. In addition to the earphones 100 described above that are equipped with both the bone conduction speaker 11 and the air conduction speaker 12, the spatial layout and structural arrangement of the pressure relief holes 1081 can also be applied to earphones 100 equipped only with the air conduction speaker 12, which will not be discussed in detail here.

[0110] Optionally, as shown in Figure 3, the central axis Z of the bone conduction speaker 11 (the direction of the central axis of the bone conduction speaker 11 is also indicated by the symbol Z) and the central axis V of the air conduction speaker 12 may intersect with each other or may not intersect with each other. For example, the central axis Z and the central axis V are non-coplanar straight lines, and the two are not coplanar, and are thus staggered. In the direction perpendicular to the central axis Z and the central axis V, the central axis Z is arranged further away from the pressure relief hole 1081 than the central axis V. In layman's terms, in the LD direction shown in Figure 5, the bone conduction speaker 11 is arranged further away from the pressure relief hole 1080 than the air conduction speaker 12. By setting the central axis Z and the central axis V as non-coplanar straight lines and the central axis Z being further away from the pressure relief hole 1081 than the central axis V, more space can be made for the design of the pressure relief hole 1081, and the size of the pressure relief hole 1081 can be set larger, thereby improving the pressure relief effect.

[0111] Optionally, the distance between the central axis Z and the central axis V can be selected to be 0.3-1 mm, 0.5-0.8 mm, 0.6 mm, 0.7 mm, or 0.2-1.2 mm. By setting the above dimensions, on the one hand, the sound quality of the bone conduction speaker 11 and the air conduction speaker 12 can be ensured, and the volume of the core assembly 1 can be kept small. On the other hand, a larger size space can be provided for the pressure relief hole 1081, thereby allowing a larger pressure relief hole 1081 to be provided.

[0112] As mentioned above, the housing assembly 10 may include a housing 101, a housing 102, and a housing 103. The partition wall 1012 may be provided on the housing 101 and / or the housing 102, and the housing 101 and the housing 102 cooperate with each other to form the accommodating chamber 1001 and the pressure relief hole 1081. For example, the housing 101 and / or the housing 102 further form a part of the accommodating chamber 1002. For example, the housing 103 may form another part of the accommodating chamber 1002, and the housing 103 cooperates with the housing 101 and / or the housing 102 to form the accommodating chamber 1002. In particular, providing the partition wall 1012 on the housing 101 and / or the housing 102 may be understood as the partition wall 1012 being a part of the housing 101 and / or the housing 102. Of course, the arrangement of the partition wall 1012 is not limited to being arranged on the housing 101 and / or the housing 102. In other embodiments, the partition wall 1012 may also be a component independent of the housing 101 and / or the housing 102.

[0113] As shown in FIG3 , a partition wall 1012 is provided on the housing 101. The housing 101 is provided with a sub-accommodating chamber 1010 and a sub-accommodating chamber 1011 located on opposite sides of the partition wall 1012. The opening direction of the sub-accommodating chamber 1010 is arranged along the wall surface of the partition wall 1012. Specifically, the opening direction of the sub-accommodating chamber 1010 is parallel or approximately parallel to the wall surface of the partition wall 1012. The opening direction of the sub-accommodating chamber 1011 is arranged to intersect the wall surface of the partition wall 1012. The housing 102 is provided with a sub-accommodating chamber 1020. The housing 102 covers the open end of the sub-accommodating chamber 1010. The sub-accommodating chamber 1020 cooperates with the sub-accommodating chamber 1010 to form the accommodating chamber 1001. Housing 103 is provided with a sub-accommodating chamber 1030, which covers the open end of sub-accommodating chamber 1011. Sub-accommodating chamber 1030 and sub-accommodating chamber 1011 cooperate to form accommodating chamber 1002. In some embodiments, sub-accommodating chamber 1010 may also be referred to as the first sub-accommodating chamber; sub-accommodating chamber 1011 may also be referred to as the second sub-accommodating chamber; sub-accommodating chamber 1020 may also be referred to as the third sub-accommodating chamber; and sub-accommodating chamber 1030 may also be referred to as the fourth sub-accommodating chamber.

[0114] By setting a partition wall 10102, the shell 101 is divided into a sub-accommodation chamber 1010 set along the wall of the partition wall 1012 with its opening direction, and a sub-accommodation chamber 1012 set crosswise with the wall of the partition wall 1012. This allows both the sub-accommodation chamber 1010 and the sub-accommodation chamber 1012 to have a larger space, thereby improving the space utilization rate of the shell 101 and reducing the mutual interference between the vibrations of the bone conduction speaker 11 and the air conduction speaker 12 during operation, thereby improving the sound quality.

[0115] As shown in FIG4 , the air conduction speaker 12 includes a diaphragm 123, which divides the accommodating cavity 1002 into a cavity portion 1006 located on the side of the diaphragm 123 facing away from the partition wall 1012, and a cavity portion 1007 located between the diaphragm 123 and the partition wall 1012. A pressure relief hole 1081 is connected to the cavity portion 1007. As further shown in FIG3 and FIG5 , the housing assembly 10 is also provided with a sound outlet hole 1080 connected to the cavity portion 1006. The cavity portion 1007 is connected to the external environment through the pressure relief hole 1081. When the diaphragm 123 vibrates along the air conduction vibration direction X2, the cavity portion 1007 can be depressurized through the pressure relief hole 1081, thereby ensuring the normal and stable operation of the air conduction speaker 12. In some embodiments, the cavity portion 1006 may also be referred to as the first cavity portion; and the cavity portion 1007 may also be referred to as the second cavity portion.

[0116] Optionally, the distance between the diaphragm 123 and the cavity wall of the accommodating cavity 1002 in the vibration direction of the diaphragm 123 (the air-conducted vibration direction X2) can be selected to be greater than 0.8 mm, and can further be selected to be greater than 1 mm. Specifically, the distance between the diaphragm 123 and the partition wall 1012 (i.e., part of the cavity wall of the accommodating cavity 1002) (i.e., the distance in the air-conducted vibration direction X2) can be greater than 0.8 mm, and can further be selected to be greater than 1 mm. This ensures that the diaphragm 123 has a larger vibration space, and the gap distance can make the airflow in the cavity portion 1007 more evenly distributed, thereby making the air pressure more uniform and improving the consistency of the vibration of the diaphragm 123. In some embodiments, the distance between the diaphragm 123 and the partition wall 1012 can refer to the minimum distance between the two. In other embodiments, the distance between the diaphragm 123 and the partition wall 1012 can refer to the distance between the vibration area of ​​the diaphragm 123 (e.g., the central area or the area with the largest amplitude) and the partition wall 1012.

[0117] As shown in Figures 3 to 5 , optionally, when worn, the center of the pressure relief hole 1081 is no higher than the center of the sound outlet 1080, and the line connecting the centers of the pressure relief hole 1081 and the sound outlet 1080 points toward the user's ear when worn. Furthermore, optionally, the line connecting the centers of the pressure relief hole 1081 and the sound outlet 1080 points toward the ear canal when worn. In layman's terms, the line connecting the centers of the pressure relief hole 1081 and the sound outlet 1080 can be tilted upward toward the top of the head relative to the human body, pointing toward the user's ear. The center of the pressure relief hole 1081 can refer to the centroid of the pressure relief hole 1081. The center of the sound outlet 1080 can refer to the centroid of the sound outlet 1080. This arrangement minimizes the risk of the user's ear (particularly the ear canal) being at an acoustic null point when the headset is worn or when worn improperly (e.g., slightly tilted), thereby ensuring that the user can hear sound normally, reducing hearing loss, and improving sound quality.

[0118] If there are multiple sound holes 1081, it can be the line connecting the center of at least one of the sound holes 1080 and the center of the pressure relief hole 1081, or it can refer to the center of the shape formed by the center lines of the multiple sound holes 1080, as the center of the multiple sound holes 1080, that is, the line connecting the center of the multiple sound holes 1081 and the center of the pressure relief hole 1081 points to the user's ear.

[0119] Optionally, when the earphones are worn, the line connecting the center of the pressure relief hole 1081 and the center of the sound outlet 1080 has an angle of ≥0° and <90° with the user's coronal axis, and an angle of >0° and ≤90° with the user's vertical axis. This arrangement can further minimize the user's ear from being at an acoustic null point when the earphones are worn or worn improperly, effectively ensuring sound output and acoustic performance of the earphones 100.

[0120] As shown in FIG4 , the air conduction speaker 12 further includes a magnetic circuit assembly 120 and a voice coil 122. The magnetic circuit assembly 120 includes a housing 121 having an open end 1211 and an annular flange 1212 disposed at the open end 1211 of the housing 121 and protruding from the outer circumference of the housing 121. The edge of the diaphragm 123 is fixed to the side of the annular flange 1212 facing the open end 1211, and covers the open end 1211 of the housing 121. The voice coil 122 is connected to the diaphragm 123. As shown in FIG3 and FIG5 , the diaphragm 123 is disposed away from the sound outlet 1080 relative to the housing 121.

[0121] To achieve good sound quality, the air conduction loudspeaker 12 described above requires a larger diaphragm 123. This larger diaphragm also requires a larger supporting structure, such as the annular flange 1212. In other words, both the annular flange 1212 and the diaphragm 123 are radially larger than other components of the air conduction loudspeaker 12, significantly impacting the overall dimensions of the housing assembly 10. By setting the annular flange 1212 on the side away from the sound outlet 1080 and setting the diaphragm 123 on the side away from the sound outlet 1080, the diaphragm 123 and the annular flange 1212 can be closer to the interior of the shell assembly 10, so that the air conduction speaker 12 with a larger radial dimension is set away from the sound outlet 1080, and the smaller part of the air conduction speaker 12 can be close to the sound outlet 1080. Compared with the structure of the traditional speaker in which the diaphragm must face the sound outlet 1080, this reverse-set structure of the air conduction speaker 12 can effectively make the size of the part of the shell of the shell assembly 10 close to the sound outlet 1080 smaller, so that the size of the shell assembly 10 from the middle area to the part of the sound outlet 1080 can be reduced (that is, the radial dimension of the outer peripheral surface of the shell assembly 10 can be gradually reduced), thereby making the structure more compact, effectively improving the space utilization of the shell assembly 10, and reducing the overall volume of the entire shell assembly 10. Moreover, this reverse arrangement can optimize the sound path and thus improve the sound quality. In short, the air conduction speaker 12 is reversed along the air conduction vibration direction X2, thereby effectively reducing the structural size of the housing assembly 10.

[0122] Optionally, as shown in Figures 3 and 4, an annular table 1005 is provided on the cavity wall of the accommodating cavity 1002 (the annular table 1005 is also shown in Figure 5, but is not marked). As shown in Figures 4 and 5, the annular flange 1212 is pressed on the annular table 1005, and the diaphragm 123 divides the accommodating cavity 1002 into a cavity portion 1006 and a cavity portion 1007. The cavity portion 1006 is located on the side of the diaphragm 123 facing the sound outlet 1080, and the cavity portion 1007 is located on the side of the diaphragm 123 away from the sound outlet 1080. The magnetic circuit assembly 120 is located in the cavity portion 1006. As shown in Figure 5, a pressure relief hole 1081 for connecting the cavity portion 1007 with the external environment is provided on the shell assembly 10. Specifically, the annular table 1005 can be provided on the shell 101.

[0123] As shown in FIG4 , the diaphragm 123 can be located on the side of the annular flange 1212 facing the annular table 1005. The earphone 100 further includes a sealant 1041, which seals the gap between the side of the annular flange 1212 facing away from the annular table 1005 and the shell assembly 10. The annular flange 1212 cooperates with the shell assembly 10, and a glue groove 1042 for accommodating the sealant 1041 is formed on the side of the annular flange 1212 facing away from the annular table 1005. Based on the above-mentioned inverted arrangement of the air conduction speaker 12, since the diaphragm 123 is closer to the inner side of the shell assembly 10 than the glue groove 1042, the glue groove is closer to the outside. On the one hand, it is convenient to dispense glue, and on the other hand, when dispensing glue on the glue groove 1042, it is possible to avoid glue overflowing onto the diaphragm 123 as much as possible, thereby reducing the impact of glue on the diaphragm 123, thereby ensuring the sound quality effect.

[0124] As further shown in FIG. 11 , an annular flange 1212 may be provided with a sound guide hole 1213. The sound guide hole 1213 is configured to connect the space enclosed by the diaphragm 123 and the magnetic circuit assembly 120 with the cavity portion 1006 outside the magnetic circuit assembly 120. Part of the sound waves generated by the diaphragm 123 vibrating along the air-conducted vibration direction X2 are conducted along the sound guide hole 1213 to the cavity portion 1006 outside the magnetic circuit assembly 120.

[0125] Optionally, as shown in Figure 4, the shell 103 is used to accommodate one end of the cover 121 facing away from the diaphragm 123, and the sound outlet 1080 is provided on the shell 103. The cover 121 includes a circumferential side surface 121a and an end surface 121b, and the end surface 121b is connected to the circumferential side surface 121a. The end surface 121b faces the sound outlet 1080. A first gap 1031 is provided between the connection area between the end surface 121b of the cover 121 and the circumferential side surface 121a located on the first side and the shell 103 (see the dotted line position pointed to by the number 1031 in Figure 4). A second gap 1032 is provided between the connection area between the circumferential side surface 121a and the end surface 121b located on the second side of the cover 121 and the shell 103 (see the dotted line position pointed to by the number 1032 in Figure 4), and the first gap 1031 is smaller than the second gap 1032. The sizes of the first gap 1031 and the second gap 1032 may respectively refer to the distance between the corresponding connection area and the housing 103. For example, the distance refers to the length of the dashed line shown in FIG4 (the dashed line may be perpendicular to the inner surface of the corresponding position of the housing 103). The first side and the second side may refer to the first side and the second side of the peripheral side 121a that are disposed opposite to each other.

[0126] Referring to Figures 4, 5, 11, and 12, in a cross-section perpendicular to the vibration direction of the diaphragm 123, the housing 121 has a length direction LD and a width direction HD. The dimension of the housing 121 along the length direction LD is greater than the dimension of the housing 121 along the width direction HD, and the first side and the second side are disposed opposite each other along the width direction HD. As shown in Figure 4, the first side can be located on the side of the magnetic circuit assembly 120 that is closer to the user's face. The first gap 1031 is smaller than the second gap 1032, and the first gap 1031 is located on the first side. This allows the smaller first gap 1031 to be closer to the user's face, effectively reducing the size of the housing 103 while ensuring that the air conduction speaker 12 can output sound signals normally.

[0127] Furthermore, the first side is located on the side of the magnetic circuit assembly 120 close to the user's face, and the outer surface of at least part of the shell 103 is tilted toward the shell 101 and the shell 102 in the direction from the second side to the first side. For example, the outer surface of the part of the shell provided with the sound outlet 1080 is tilted toward the shell 101 and the shell 102 in the direction from the second side to the first side, that is, the sound outlet 1080 is located on the at least part of the shell 103 mentioned above. Through this arrangement, the sound outlet 1080 can be directed toward the user's ear, so that the sound signal output by the air conduction speaker 12 can be better transmitted to the user's ear. The part of the shell 103 opposite to the peripheral side surface 121a is connected to the part of the shell provided with the sound outlet. Optionally, after the above-mentioned air conduction speaker 12 is reversed, the outer surface of the portion of the shell 103 opposite to the peripheral side surface 121a can be inclined, specifically, it can gradually converge and tilt along the air conduction vibration direction X2 from the first shell 101 to the accommodating cavity 1002 in the direction away from the first shell 101, so that the shell assembly 10 can be compact and miniaturized, thereby reducing the volume of the shell assembly 10. Moreover, the shell assembly 10 can have a fitting surface 10a that contacts the user's face and an inclined surface 10b connected to the fitting surface 10a and inclined in a direction away from the fitting surface 10a (the inclined surface can be an arc-shaped inclined surface, gradually inclined away from the face). The inclined surface 10b is used to avoid the position of the user's tragus, thereby reducing pressure on the tragus, making it easier to wear, improving wearing comfort, and having better sound quality. The fitting surface 10a is mainly formed by the shell 102, and the inclined surface 10b can be formed by the shell 102 and the shell 103.

[0128] Furthermore, the portion of the end face 121b adjacent to the peripheral side surface 121a on the first side can be connected to the shell 103, or the connection area between the end face 121b and the peripheral side surface 121a on the first side can be in contact with the shell 103, which can further reduce the structural size of the shell assembly 10. The contact here can be direct contact, which can be further fixed by glue under direct contact, or it can be indirect contact fixed by glue. The above-mentioned contact position can further separate the portion of the cavity portion 1006 located outside the cover body 121 into a first space portion and a second space portion. The first space portion can specifically be formed between the portion of the peripheral side surface 121a on the first side and the shell 103, or between a portion of the end face 121b, the portion of the peripheral side surface 121 on the first side, and the shell 103, and the second space portion can be formed by at least a portion of the end face 121b, the portion of the peripheral side surface 121a on the second side, and the shell 103. The first gap 1031 is located in the first space portion, and the second gap is located in the second space portion, and the second space portion is connected to the sound outlet 1080. If the end surface 121b participates in the encirclement of the first space portion and the second space portion, then the area of ​​the portion of the end surface 121b that encloses the first space portion is smaller than the area of ​​the end surface 121b that encloses the second space portion, that is, the above-mentioned contact position is closer to the first side and closer to the portion of the shell of the shell assembly 10 opposite to the first side. The corresponding positions of the cover 121 and the shell 103 can contact to form the above-mentioned contact position. In other embodiments, the corresponding positions of the cover 121 and the shell 103 can be set to have a gap, and the gap can be greater than 0.1mm. The gap is set in this way so that when the cover 121 is affected by the vibration of the diaphragm 123 and vibrates, it does not collide with the shell 103, thereby reducing the possibility of noise generation. In short, corresponding to the aforementioned contact position, the position corresponding to the gap can be called the minimum gap position.

[0129] In the state where the contact position is set as described above, at least part of the sound waves can enter the second space portion along the peripheral side surface 121 a from the first space portion, and then be transmitted out from the birth hole 1080 from the second space portion.

[0130] Optionally, referring to FIG4 , on the first side, the average distance between the annular flange 1212 and the housing 103 along the vibration direction X2 of the diaphragm 123 is greater than or equal to 0.5 mm. Optionally, on the second side, the second gap 1032 is greater than or equal to 0.5 mm. Specifically, on the first side, the average distance between the annular flange 1212 and the housing 103 along the vibration direction X2 of the diaphragm 123 is the average of the sum of the maximum distance L5 and the minimum distance L4 between the annular flange 1212 and the housing 103 along the vibration direction of the diaphragm 123 (i.e., the air-conducted vibration direction X2).

[0131] By setting the above dimensions, on the one hand, it is ensured that the sound cavity size is sufficient to achieve good sound quality before the sound waves are guided out of the sound outlet 1080, and on the other hand, the shell assembly 10 can be miniaturized and compacted. In addition, by setting the structure of the accommodating cavity 1002 and the air conduction speaker 12 in reverse as shown in Figure 4, the sound waves enter the second space portion along the peripheral side 121a from the first space portion (that is, they can enter the second space 1032 from the first gap 1031), and in the air conduction vibration direction X2, the second space portion actually gradually tilts toward the first space portion and better points to the sound outlet 1080, so that the transmission direction of the sound waves is more directed to the user's ears, further enhancing the transmission efficiency of the sound waves and improving the sound quality.

[0132] Optionally, as shown in FIG4 , the housing 121 includes a magnetically conductive cover 121 c . The magnetic circuit assembly 120 further includes a magnet 124 disposed within the magnetically conductive cover 121 c , and the voice coil 122 extends into a magnetic gap formed between the magnetically conductive cover 121 c and the magnet 124 .

[0133] Referring to Figures 6, 7, and 8, the bone conduction speaker 11 includes a voice coil assembly 111, a magnet assembly 112, and a transducer 113. The first of the voice coil assembly 111 and the magnet assembly 112 is disposed around the second of the voice coil assembly 111 and the magnet assembly 112. For example, the voice coil assembly 111 surrounds the magnet assembly 112. As shown in Figures 8 and 13, the transducer 113 includes a central fixing portion 1131, an annular fixing portion 1132 surrounding the periphery of the central fixing portion 1131, and a connecting rod assembly 1133 connecting the central fixing portion 1131 and the annular fixing portion 1132. The annular fixing portion 1132 is connected to the first of the voice coil assembly 111 and the magnet assembly 112, while the central fixing portion 1131 is connected to the second of the voice coil assembly 111 and the magnet assembly 112. For example, the annular fixing portion 1131 is connected to the voice coil assembly 111, and the central fixing portion 1131 is connected to the magnet assembly 112. The connecting rod assembly 1133 is used to elastically constrain the relative movement of the voice coil assembly 111 and the magnet assembly 112 along the central axis Z of the bone conduction speaker 11. Of course, the connecting rod assembly 1133 can maintain the stability of the position of the voice coil assembly 111 and the magnet assembly 112 in a radial direction perpendicular to the central axis Z, that is, it can constrain the voice coil assembly 111 and the magnet assembly 112 in the radial direction. Maintaining the relative stability of the voice coil assembly 111 and the magnet assembly 112 in the radial direction can make the relative movement of the two along the central axis Z more stable, thereby improving the sound quality. For example, the annular fixing portion 1132 can serve as a stopper and rigidly constrain the relative movement range between the voice coil assembly 111 and the magnet assembly 112 along the central axis Z (shown in Figure 6). For example, the annular fixing portion 1131 is fixedly connected to the voice coil assembly 111. When used as a stopper, the magnet assembly 112 can be rigidly stopped when the vibration amplitude of the magnet assembly 112 relative to the voice coil assembly 111 is too large, thereby limiting the movement range of the magnet assembly 112 and thereby rigidly constraining the relative movement range between the voice coil assembly 111 and the magnet assembly 112. Of course, the stopper can also be implemented in other structural forms or methods.

[0134] The central axis direction Z of the bone conduction speaker 11 can coincide with the vibration direction of the bone conduction speaker 11 (i.e., the bone conduction vibration direction X1). The connecting rod assembly 1133 is an elastic member or is capable of elastic deformation, elastically constraining the voice coil assembly 111 and the magnet assembly 112. Elastic constraint can be understood as the relative motion of the voice coil assembly 111 and the magnet assembly 112 within the relative motion range allowed by the elastic deformation of the connecting rod assembly 1133. On the one hand, the connecting rod assembly 1133 can limit the relative motion range between the voice coil assembly 111 and the magnet assembly 112 along the bone conduction vibration direction X1. On the other hand, after the voice coil assembly 111 and the magnet assembly 112 achieve relative motion, they can be reset through elastic recovery. The stopper rigidly constrains the relative motion range between the voice coil assembly 111 and the magnet assembly 112 along the central axis direction Z. This can be understood as limiting the maximum relative motion range between the voice coil assembly 111 and the magnet assembly 112 along the central axis direction Z, preventing the relative motion between the voice coil assembly 111 and the magnet assembly 112 from exceeding the maximum relative motion range, which would cause the vibration transmission plate 113 to transition from elastic deformation to plastic deformation, resulting in a decrease in the elasticity of the vibration transmission plate 113 and damage to the voice coil assembly 111 and the magnet assembly 112. Rigidity and elasticity are relative terms, that is, the constraint strength of the stopper is greater than the constraint strength of the connecting rod assembly 1133.

[0135] In the example shown in FIG8 , the stopper is an annular fixing portion 1132. The projection of the annular fixing portion 1132 along the central axis direction Z partially overlaps with the outer end surface 1103 of the second of the voice coil assembly 111 and the magnet assembly 112. Specifically, the annular fixing portion 1132 is connected to the voice coil assembly 111, and the projection of the annular fixing portion 1132 along the central axis direction Z partially overlaps with the outer end surface 1103 of the magnet assembly 112. By setting the annular fixing portion 1132 to partially overlap with the outer end surface 1103 of the second one of the voice coil assembly 111 and the magnet assembly 112 along the central axis direction Z, when the amplitude of the relative movement of the voice coil assembly 111 and the magnet assembly 112 along the central axis direction Z is too large, the outer end surface 1103 of the voice coil assembly 111 and the magnet assembly 112 can abut against each other with the annular fixing portion 1132. Since the annular fixing portion 1132 is relatively fixed to the first one of the voice coil assembly 111 and the magnet assembly 112, the annular fixing portion 1132 rigidly abuts against the second one of the voice coil assembly 111 and the magnet assembly 112, thereby rigidly constraining the relative movement range of the voice coil assembly 111 and the magnet assembly 112. If the earphone 100 is dropped or impacted, the relative movement of the voice coil assembly 111 and the magnet assembly 112 along the central axis direction Z may be excessive, causing the vibration transmission plate 113 to transition from elastic deformation to plastic deformation, resulting in a decrease in the elasticity of the vibration transmission plate 113. The rigid constraint imposed by the annular fixing portion 1132 can reduce the performance degradation of the vibration transmission plate 113 due to excessive stretching, thereby reducing the impact on sound quality. Furthermore, by providing the annular fixing portion 1132 as a stop, there is no need for an additional stop structure, resulting in a simple and stable structure and reducing costs.

[0136] Optionally, as shown in Figures 6, 7 and 8, the outer end surface 1103 includes a central area 1104 and a peripheral area 1106 surrounding the central area 1104, the central area 1104 is provided with a raised portion 1105, the raised portion 1105 is protruded relative to the peripheral area 1106, the central fixing portion 1131 is fixedly connected to the raised portion 1105, and the projection of the annular fixing portion 1132 along the central axis direction Z partially overlaps with the peripheral area 1106.

[0137] Optionally, referring to FIG. 14 , a width L6 of an overlapping area between the annular fixing portion 1132 and the outer end surface 1103 along the radial direction of the bone conduction speaker 11 is greater than or equal to 0.03 mm (millimeter), thereby ensuring the restraining strength of the stopper.

[0138] Optionally, in a natural state, the spacing L7 between the upper surface of the raised portion 1105 and the lower surface of the annular fixing portion 1132 of the vibration transmission plate 113 in the central axis direction Z is less than or equal to 1 mm. Setting this spacing L7 allows the connecting rod assembly 1133 to undergo a reasonable pre-deformation when the central fixing portion 1131 and the raised portion 1105 are fixedly connected, thereby improving the vibration efficiency of the vibration transmission plate 113. If this spacing L7 is set too large, the pre-deformation of the connecting rod assembly 1133 will be large, which may easily exceed the yield limit and cause plastic deformation, resulting in a decrease in elastic deformation performance. Without pre-deformation, the gravity of the magnet assembly 112 or the voice coil assembly 111, under the elastic suspension of the vibration transmission plate 112, will cause the relative positions of the magnet assembly 112 and the voice coil assembly 111 in the central axis direction Z to deviate, resulting in a non-neutral position, affecting the relative movement between the magnet assembly 112 and the voice coil assembly 111, and thus affecting the sound quality. In some embodiments, since the lower surface of the central fixing portion 1131 and the upper surface of the raised portion 1105 need to be welded together, the spacing distance L7 between the upper surface of the raised portion 1105 and the lower surface of the annular fixing portion 1132 in the central axis direction Z can also be considered to a certain extent as the spacing distance between the lower surface of the central fixing portion 1131 and the lower surface of the annular fixing portion 1132.

[0139] Of course, no matter whether it is fixed to the raised portion 1105 or to the central fixing portion 1131 through other structures or methods, the distance between the lower surface of the central fixing portion 1131 and the lower surface of the annular fixing portion 1132 in the central axis direction Z actually indicates the pre-deformation of the vibration transmission plate 113 in the central axis direction Z.

[0140] Optionally, in a natural state, the ratio of the distance between the lower surface of the central fixing portion 1131 and the lower surface of the annular fixing portion 1132 in the central axis direction Z to the extension component of the length of at least one of the connecting rods 1134 in the first direction W1 is 0 to 0.1, inclusive. Optionally, the ratio of the distance between the lower surface of the central fixing portion 1131 and the lower surface of the annular fixing portion 1132 in the central axis direction Z to the extension component of the length of at least one of the connecting rods 1134 in the second direction W2 is 0 to 0.18, inclusive. This configuration allows for appropriate pre-deformation of the vibration transmission plate 113. This ensures adequate support for the suspended component (voice coil assembly 111 or magnet assembly 112) without sagging, thus ensuring vibration performance, while also providing space for excellent elastic deformation. If this ratio is too large, the pre-deformation of the vibration transmission plate 113 may be excessive, exceeding the yield limit and resulting in a decrease in elastic performance. If the ratio is too small, the vibration transmission plate 113 will not provide sufficient support for the suspended components, resulting in reduced vibration performance and loss of sound quality.

[0141] Optionally, the area of ​​the upper surface of the protrusion 1105 on the outer end surface 1103 is less than or equal to 30%. On the one hand, the protrusion 1105 with a smaller area can achieve a relatively stable fixed connection with the connecting rod assembly 1133, and on the other hand, it does not occupy too much of the connecting rod assembly 133, so that the connecting rod assembly 1133 has enough area to produce elastic deformation, thereby providing sufficient deformation space, so that the vibration transmission plate 113 has better elasticity.

[0142] Optionally, as shown in Figures 7 and 8, the magnet assembly 112 includes a magnet 1121 and two magnetically conductive plates 1122. The two magnetically conductive plates 1122 are disposed on opposite side end surfaces of the magnet 1121 along the central axis direction Z. The raised portions 1105 are disposed on the magnetically conductive plates 1122, such that the outer surfaces of the magnetically conductive plates 1122 form a central region 1104 and a peripheral region 1106. The radial projections of the two magnetically conductive plates 1122 along the bone conduction speaker 11 overlap with the voice coil assembly 111. The peripheral region 1106 is disposed in contact with the magnet 1121. The raised portions 1105 are spaced apart from the magnet 1121. The peripheral region 1106 accounts for greater than or equal to 60% of the area of ​​the outer end surface 1103. In this way, by providing the protrusion 1105, the pre-deformation of the vibration transmitting plate 113 can be made more reasonable, the pre-deformation can be reduced, and the elastic deformation performance of the vibration transmitting plate 113 can be guaranteed. In addition, there is no need to provide additional connecting parts to connect the vibration transmitting plate 113 and the magnetic conductive plate 1122, which can reduce the overall mass of the entire bone conduction speaker 11, and thus improve the vibration effect of the bone conduction speaker 11. Optionally, the stopper is configured not to constrain the relative movement of the voice coil assembly 111 and the magnet assembly 112 along the central axis direction Z when the bone conduction speaker 11 is in normal working condition. However, when the bone conduction speaker 11 is in certain situations, such as falling or colliding, the relative movement between the voice coil assembly 111 and the magnet assembly 112 may exceed the elastic constraint range allowed by the elastic deformation of the vibration transmission plate 113. The stopper 11 can rigidly constrain the relative movement of the voice coil assembly 111 and the magnet assembly 112 along the central axis direction Z, thereby reducing the probability that the relative movement between the voice coil assembly 111 and the magnet assembly 112 exceeds the allowable elastic constraint range, thereby reducing the probability that the vibration transmission plate 113 loses its elasticity due to excessive pulling.

[0143] Optionally, as shown in Figures 7 and 8 , there are two vibration transmission plates 113, one disposed on opposite sides of the bone conduction speaker 11 along the central axis Z. The connecting rod assembly 1133 of each vibration transmission plate 113 is composed of two connecting rods 1134. Of course, in other embodiments, the connecting rod assembly 1133 may also be composed of at least two connecting rods 1134.

[0144] Optionally, as shown in Figures 7 and 8, the voice coil assembly 111 is arranged around the magnet assembly 112, and includes two groups of voice coils 1110 arranged at intervals along the central axis direction Z and a magnetic conductive cover 1111 wound around the periphery of the two groups of voice coils 1110. The magnet assembly 112 includes a magnet 1121 and two magnetic conductive plates 1122. The two magnetic conductive plates 1122 are respectively arranged on the two side end surfaces of the magnet 1121 that are arranged opposite to each other along the central axis direction Z, wherein the radial projections of the two magnetic conductive plates 1122 along the bone conduction speaker 11 are respectively overlapped with the two groups of voice coils 1110, and the power supply directions of the two groups of voice coils 1110 are opposite to each other.

[0145] Optionally, the voice coil assembly 111 is disposed around the magnet assembly 112 , and the voice coil assembly 111 is fixed to the housing assembly 10 .

[0146] Optionally, the annular fixing portion 1132 can be fixedly connected to the magnetic cover 1111. Optionally, the annular fixing portion 1132 and the magnetic cover 1111 can be welded and fixed by offset welding. Specifically, the outer edge of the annular fixing portion 1132 and the outer edge of the corresponding end of the magnetic cover 1111 are offset from each other. For example, the outer edge of the annular fixing portion 1132 overlaps the end of the magnetic cover 1111 and is located between the outer peripheral surface and the inner peripheral surface of the magnetic cover 1111, thereby forming an offset. On the basis of this offset, the outer edge of the annular fixing portion 1132 and the end of the magnetic cover 1111 are welded and fixed. By setting the annular fixing portion 1132 and the magnetic cover 1111 to be welded and fixed by setting the offset welding method, the welding position is more clearly presented, which facilitates the welding process and the observation of the weld, and can effectively improve the welding efficiency and welding yield, thereby ensuring the welding strength. As for the form of the weld, it can be spot welding or continuous welding. Optionally, the weld between the annular fixing portion 1132 and the magnetic conductive cover 1111 can withstand a force between 400 and 1200N.

[0147] It is understood that in some other embodiments of the present application, the welding method may also be other methods such as stitch welding (butt welding). Stitch welding specifically involves stacking the annular fixing portion 1132 and the corresponding ends of the magnetic cover 1111, and welding the stacked positions of the annular fixing portion 1132 and the corresponding ends of the magnetic cover 1111 together by laser welding or other methods.

[0148] Optionally, as shown in Figures 13 and 15, the vibration transmission plate 113 is provided with observation holes 1130 running through both sides thereof. The observation holes 1130 running through both sides of the vibration transmission plate 113 may refer to the observation holes 1130 running through both sides of the vibration transmission plate 113 in the thickness direction of the vibration transmission plate 113. The thickness direction of the vibration transmission plate 113 may be, for example, the central axis direction Z. Specifically, the observation holes 1130 may be provided in the annular fixing portion 1132. Optionally, there may be multiple observation holes 1130, which are arranged at intervals along the circumference of the vibration transmission plate 113. By providing the observation holes 1130 on the vibration transmission plate 113, the magnetic circuit structure inside the bone conduction speaker 11, such as the magnet assembly 112 and other structures, can be observed through the observation holes 1130. It is possible to understand whether the position of the magnet assembly 112 is deviated through the observation holes 1130, and even the working condition of the magnet assembly 112 can be observed, which is convenient for troubleshooting or structural optimization.

[0149] Optionally, as shown in Figures 13, 15, and 16, the vibration transmission plate 113 may include a central fixing portion 1131 formed from a sheet material, an annular fixing portion 1132 surrounding the periphery of the central fixing portion 1131, and a connecting rod assembly 1133 connected between the central fixing portion 1131 and the annular fixing portion 1132. The inner ring edge 1132a of the annular fixing portion 1132 has a first direction W1 and a second direction W2 that are perpendicular to each other. In other words, the annular fixing portion 1132 has a first direction W1 and a second direction W2. The connecting rod assembly 1133 is composed of two connecting rods 1134, each connecting rod 1134 having an outer edge 1135 disposed toward the inner ring edge 1132a and an inner edge 1136 facing away from the inner ring edge 1132a. The extension component of the outer edge 1135 along the first direction W1 is greater than or equal to half the dimension of the inner ring edge 1132a along the first direction W1, and the width of the connecting rod 1134 is greater than or equal to one tenth the dimension of the inner ring edge 1132a along the second direction W2.

[0150] Specifically, the above description is based on the scenario where the central fixing portion 1131, the annular fixing portion 1132, and the connecting rod assembly 1133 are arranged coplanarly. If the inner ring edge 1132a has distortion points such as protrusions or grooves, these distortion points should be eliminated, and the inner ring edge 1132a should be formed by a reasonable transition of the lines outside the distortion points. For example, the second direction W2 refers to the direction of the shortest line segment that intersects the inner ring edge 1132a through the geometric center of the inner ring edge 1132a. The first direction W1 is a direction perpendicular to the second direction W2 within the plane of the central fixing portion 1131, the annular fixing portion 1132, and the connecting rod assembly 1133. Among them, the vibration transmission plate 113 is set as a two-rod structure, and the extension component of the outer edge 1135 along the first direction W1 is greater than or equal to half of the size of the inner ring edge 1132a along the first direction W1, which can effectively increase the extension length of the connecting rod 1134, thereby making the connecting rod 1134 have a larger deformation space. At the same time, since the width of the connecting rod 1134 is greater than or equal to one tenth of the size of the inner ring edge 1132a along the second direction W2, the tolerance and service life of the connecting rod 1134 can be improved.

[0151] Optionally, the extension component of the outer edge 1135 along the first direction W1 can be further greater than or equal to two-thirds of the dimension of the inner ring edge 1132a along the first direction W1. Thus, the extension component of the outer edge 1135 along the first direction W1 can be further greater than or equal to two-thirds of the dimension of the inner ring edge 1132a along the first direction W1, which can further increase the extension length of the connecting rod 1134 and thereby provide the connecting rod 1134 with a larger deformation space.

[0152] Optionally, the extension component of the outer edge 1135 along the second direction W2 is greater than or equal to one-half of the dimension of the inner ring edge 1132a along the second direction W2. Thus, the extension component of the outer edge 1135 along the second direction W2 is greater than or equal to one-half of the dimension of the inner ring edge 1132a along the second direction W2, which can increase the extension length of the connecting rod 1134 and thereby provide the connecting rod 1134 with a larger deformation space.

[0153] Optionally, the extension component of the outer edge 1135 along the second direction W2 is greater than or equal to two-thirds of the dimension of the inner ring edge 1132a along the second direction W2. Thus, the extension component of the outer edge 1135 along the second direction W2 is greater than or equal to two-thirds of the dimension of the inner ring edge 1132a along the second direction W2, which can further increase the extension length of the connecting rod 1134 and thereby provide the connecting rod 1134 with a larger deformation space.

[0154] Optionally, the width of the connecting rod 1134 is greater than or equal to one eighth of the dimension of the inner ring edge 1132a along the second direction W2. Thus, the width of the connecting rod 1134 is greater than or equal to one eighth of the dimension of the inner ring edge 1132a along the second direction W2, which can further improve the durability and service life of the connecting rod 1134.

[0155] Optionally, the two connecting rods 1134 are 180 degrees rotationally symmetrical about the central fixing portion 1131. This arrangement can effectively improve the vibration transmission stability and balance of the vibration transmission plate 113.

[0156] Optionally, the dimension of the inner ring edge 1132a along the first direction W1 is greater than the dimension of the inner ring edge 1132a along the second direction W2. In other words, the annular fixing portion 1132 may be arranged in a generally racetrack shape. The ratio of the dimension of the inner ring edge 1132a along the first direction W1 to the dimension of the inner ring edge 1132a along the second direction W2 is greater than or equal to 1.5.

[0157] Optionally, two connecting rods 1134 are connected to opposite sides of the central fixing portion 1131 in the first direction W1. This arrangement effectively increases the length of the connecting rods 1134. Specifically, as shown in Figure 15, the inner ring edge 1132a includes two edge segments 11321 spaced apart along the second direction W2. Each connecting rod 1134 is configured to extend from the central fixing portion 1131 through the gap between the central fixing portion 1131 and one of the two first sub-inner ring edges 1132a, and then connect to the other of the two edge segments 11321.

[0158] Optionally, one end of the connecting rod 1134 is smoothly connected to the central fixing portion 1131. The other end of the connecting rod 1134 is smoothly connected to the annular fixing portion 1132. Further, as shown in Figure 16, the connecting rod 1134 includes a first sub-rod portion 1137 connected to the central fixing portion 1131, a second sub-rod portion 1138 connected to the annular fixing portion 1132, and a third sub-rod portion 1139 connected between the first sub-rod portion 1137 and the second sub-rod portion 1138. The width of at least a portion of the first sub-rod portion 1137 gradually widens in a direction toward the central fixing portion 1131 and is smoothly connected to the central fixing portion 1131. At least a portion of the second sub-rod portion 1138 gradually widens in a direction toward the annular fixing portion 1132 and is smoothly connected to the annular fixing portion 1132. The width of the third sub-rod portion 1139 remains consistent.

[0159] Optionally, the inner edge 1136 of the first sub-rod portion 1137 and the inner edge 1136 of the second sub-rod portion 1138 are arranged in an arc shape, and the inner edge 1136 of the third sub-rod portion 1139 is arranged in a straight line and smoothly transitions with the inner edge 1136 of the first sub-rod portion 1137 and the inner edge 1136 of the second sub-rod portion 1138, and / or the outer edge 1135 of the first sub-rod portion 1137 and the outer edge 1135 of the second sub-rod portion 1138 are arranged in an arc shape, and the outer edge 1135 of the third sub-rod portion 1139 is arranged in a straight line and smoothly transitions with the outer edge 1135 of the first sub-rod portion 1137 and the outer edge 1135 of the second sub-rod portion 1138. Such an arrangement can effectively reduce the internal stress at the connection points between the connecting rod 1134 and the central fixing portion 1131 and the annular fixing portion 1132.

[0160] Optionally, the portion of the second sub-rod 1138 connected to the third sub-rod 1139 maintains the same width as the third sub-rod 1139 , and / or the portion of the first sub-rod 1137 connected to the third sub-rod 1139 maintains the same width as the third sub-rod 1139 .

[0161] Optionally, the extension component of the outer edge 1135 of the third sub-rod portion 1139 along the first direction W1 is greater than or equal to half of the dimension of the inner ring edge 1132a along the first direction W1, and the width of the third sub-rod portion 1139 is greater than 0.5 mm.

[0162] Optionally, the inner edge 1136 of the first sub-rod portion 1137 is configured as a concave arc, and the edge of the central fixing portion 1131 that connects to the inner edge 1136 of the first sub-rod portion 1137 is configured as a convex arc, smoothly transitioning to the inner edge 1136 of the first sub-rod portion 1137. This configuration, on the one hand, allows for a reasonable transition between the central fixing portion 1131 and the first sub-rod portion 1137, and on the other hand, the convex arc configuration ensures the size of the central fixing portion 1131, thereby ensuring the fixing effect between the central fixing portion 1131 and the magnet assembly 112.

[0163] Optionally, the bone conduction speaker 11 may include two vibration transmitting plates 113. The two vibration transmitting plates 113 are disposed on opposite sides of the bone conduction speaker 11 along the central axis direction Z. The connecting rod assembly 1133 of the first of the two vibration transmitting plates 113 extends in a direction opposite to the connecting rod assembly 1133 of the second of the two vibration transmitting plates 113, starting from the central fixed portion 1131 to which it is connected. This arrangement can offset the rotational inertia of the bone conduction speaker 111 about the bone conduction vibration direction X1 when it vibrates along the bone conduction vibration direction X1.

[0164] Optionally, the mass of the magnet assembly 112 in the bone conduction speaker 11 accounts for less than or equal to 80%, and the mass of the load pushed by the bone conduction speaker 11 is less than or equal to 9 times the mass of the bone conduction speaker 11. The load pushed by the bone conduction speaker 11 includes the total mass of the housing assembly 10 and all parts disposed within the housing assembly 10 except the magnet assembly 112.

[0165] Optionally, the mass of the bone conduction speaker 11 is less than or equal to 8 grams.

[0166] Optionally, the vibration transmitting piece 113 is configured to enable the earphone 100 to have a resonance peak, and the peak value of the resonance peak is less than or equal to 500 Hz.

[0167] 3 and 17 , the movement assembly 1 includes a housing assembly 10, a bone conduction speaker 11, and a fixing glue 1062. The housing assembly 10 can be used to place the bone conduction speaker 11. The fixing glue 1062 is used to fix the bone conduction speaker 11 to the housing assembly 10. Specifically, the housing assembly 10 can be provided with a receiving cavity 1001. The bone conduction speaker 11 can be disposed in the receiving cavity 1001, and the bone conduction speaker 11 is configured to vibrate along the central axis direction Z of the bone conduction speaker 11. The portion of the housing assembly 10 corresponding to the bone conduction speaker 11 fits the user's face, and the bone conduction speaker 11 can drive the housing assembly 10 to vibrate when vibrating, so as to convert the electrical signal into a vibration signal and transmit the vibration signal to the auditory nerve through human tissue by vibration. The central axis direction Z of the bone conduction speaker 11 is shown as the Z direction in FIG17 .

[0168] As shown in Figures 3 and 17, the earphone 100 may further include a wearing component 27. The shell 101 and the shell 102 may cooperate to form a accommodating cavity 1001, the shell 101 is connected to the wearing component 27, and the fixing glue 1062 connects the shell 101 and the bone conduction speaker 11. The shell 101 and the shell 102 are arranged to cooperate to form the accommodating cavity 1001, which can facilitate the installation and fixing of the wearing component 27 and the bone conduction speaker 11 during production of the earphone 100, reduce the difficulty of manufacturing the earphone 100, and facilitate the subsequent disassembly and maintenance of the earphone 100. The movement assembly 1 may include a shell assembly 10 and a microphone assembly 13. The microphone assembly 13 may be arranged in the accommodating cavity 1001. As shown in Figure 17, a sound inlet 1082 is provided on the shell assembly 10, and the microphone assembly 13 can be used to collect external sounds input through the sound inlet 1082.

[0169] The wearing assembly 27 may include, for example, ear hooks, headbands, clips, and other components, so as to facilitate wearing and securing the earphones 100 in a certain position via the wearing assembly 27. Optionally, the wearing assembly 27 may be disposed on the housing 101 in a radial direction of the bone conduction speaker 11 so that the wearing assembly 27 does not affect the vibration effect of the bone conduction speaker 11 in the central axis direction Z.

[0170] As shown in Figure 7, the voice coil assembly 111 can be arranged around the magnet assembly 112, and the vibration transmission plate 113 can elastically connect the voice coil assembly 111 and the magnet assembly 112 to elastically constrain the voice coil assembly 111 and the magnet assembly 112 to move relative to each other along the central axis direction Z, and the fixing glue 1062 connects the shell assembly 10 and the voice coil assembly 111.

[0171] Specifically, when current passes through the voice coil assembly 111, the voice coil assembly 111 can interact with the magnet assembly 112, thereby generating vibrations. Therefore, by controlling the current passing through the voice coil assembly 111, the voice coil assembly 111 can interact with the magnet assembly 112 to generate a corresponding vibration signal. The vibration signal can then be transmitted to the housing assembly 10 and then to human tissue.

[0172] The voice coil assembly 111 and the magnet assembly 112 are elastically connected through the vibration transmission plate 113, which can elastically constrain the voice coil assembly 111 and the magnet assembly 112 so that when the voice coil assembly 111 vibrates, the voice coil assembly 111 and the magnet assembly 112 are not easily moved relative to each other along the central axis direction Z, thereby ensuring the stability of the earphone 100.

[0173] Optionally, fixing glue 1062 connects the housing 101 and the voice coil assembly 111. Specifically, the inner circumference of the housing 101 and the outer circumference of the voice coil assembly 111 may face each other, and the fixing glue 1062 may fill the gap between the inner circumference of the housing 101 and the outer circumference of the voice coil assembly 111 to connect and fix the housing 101 and the voice coil assembly 111.

[0174] Optionally, the housing 101 and the housing 102 may cooperate with each other along the central axis direction Z, with the housing 102 further pressing and securing the voice coil assembly 111 to the housing 101. Using the housing 102 to further press and secure the voice coil assembly 111 to the housing 101 in this manner can further stabilize the position of the voice coil assembly 111 in the central axis direction Z. Further pressing and securing the voice coil assembly 111 by the cooperation of the housings 101 and 102 can reduce the need for additional securing means and facilitate vibration of the housing assembly 10 when the voice coil assembly 111 vibrates in the central axis direction Z, thereby improving the structural tightness of the earphone 100.

[0175] As previously mentioned, there can be two sets of voice coils 1110, with the magnetic shields 1111 wound around the two sets of voice coils 1110. The two sets of voice coils 1110 allow current to flow through them, interacting with the magnet assembly 112 to generate vibration. Spacing the two sets of voice coils 1110 along the central axis Z enhances the vibration of the voice coil assembly 1111.

[0176] The magnetic cover 1111 is used to constrain the magnetic field direction of the magnet assembly 112, and is also used to contact the shell assembly 10. When the two groups of voice coils 1110 vibrate, they can drive the magnetic cover 1111 to vibrate, thereby transmitting the vibration signal to the shell assembly 10 through the magnetic cover 1111.

[0177] As previously mentioned, there can be two magnetic conductive plates 1122, each of which can be disposed on opposite side end surfaces of the magnet 1121 along the central axis direction Z. The two magnetic conductive plates 1122 are used to constrain the direction of the magnetic field of the magnet 1121 on the opposite side end surfaces of the magnet 1121 along the central axis direction Z, thereby enhancing the interaction between the magnet 1121 and the voice coil 1110. Optionally, the projections of the two magnetic conductive plates 1122 along the radial direction E overlap with the two voice coils 1110, allowing the two magnetic conductive plates 1122 to act on both voice coils 1110. Furthermore, the two voice coils 1110 are energized in opposite directions to ensure that the forces acting on the two voice coils 1110 are in the same direction when interacting with the same magnet 1121.

[0178] As shown in Figures 17 to 19 , the housing assembly 10 and / or the bone conduction speaker 11 may be provided with a positioning portion 1061. The positioning portion 1061 is used to maintain a predetermined gap between the inner circumference of the housing assembly 10 and the outer circumference of the bone conduction speaker 11 along the radial direction of the bone conduction speaker 11. The radial direction E of the bone conduction speaker 11 can be represented by the direction E in Figures 17 to 19 . Any direction perpendicular to the central axis direction Z can be referred to as the radial direction E of the bone conduction speaker 11.

[0179] The positioning portion 1061 may be located on the housing assembly 10, the bone conduction speaker 11, or both. This embodiment does not specifically limit the location of the positioning portion 1061. For example, the positioning portion 1061 may be located on one of the housing assembly 10 and the bone conduction speaker 11, and abut against the other along the radial direction of the bone conduction speaker 11, thereby creating a certain gap between the inner circumference of the housing assembly 10 and the outer circumference of the bone conduction speaker 11.

[0180] The fixing glue 1062 can fill the gap and connect the housing assembly 10 and the bone conduction speaker 11. In this way, the fixing glue 1062 can fix the housing assembly 10 and the bone conduction speaker 11 in the circumferential direction of the bone conduction speaker 11, thereby preventing the bone conduction speaker 11 from deviating when vibrating along its central axis direction Z.

[0181] Maintaining a predetermined gap between the bone conduction speaker 11 and the housing assembly 10 in the circumferential direction of the bone conduction speaker 11 can facilitate the addition of the fixing glue 1062, simplifying the manufacturing process of the earphone 100, and allowing the fixing glue 1062 to flow in the circumferential direction of the bone conduction speaker 11 and more evenly fill the gap between the bone conduction speaker 11 and the housing assembly 10, thereby enhancing the fixing effect of the fixing glue 1062 and stabilizing the position of the bone conduction speaker 11 in the accommodating cavity 1001, making the structure of the earphone 100 more compact and stable.

[0182] Optionally, there may be multiple positioning portions 1061, spaced apart along the circumference of the bone conduction speaker 11. Multiple positioning portions 1061 are spaced apart along the circumference of the bone conduction speaker 11, and the multiple positioning portions 1061 are positioned to create a predetermined gap around the circumference of the bone conduction speaker 11, facilitating the application of the fixing glue 1062 around the circumference of the bone conduction speaker 11, thereby enhancing the fixing effect of the fixing glue 1062. Optionally, the multiple positioning portions 1061 may be symmetrically arranged on opposite sides of the circumference of the bone conduction speaker 11. As shown in FIG. 18 , the vibration transmission plate 113 may elastically constrain the relative movement of the voice coil assembly 111 and the magnet assembly 112 along the central axis direction Z. Optionally, the central fixing portion 1131 may be fixedly connected to the magnetic conductive plate 1122, the annular fixing portion 1132 may be fixedly connected to the magnetic conductive cover 1111, and the connecting rod assembly 1133 connects the annular fixing portion 1132 and the central fixing portion 1131.

[0183] Specifically, the positioning portion 1061 is provided on the outer edge of the annular fixing portion 1132 of the vibration transmitting plate 113 and extends radially toward the inner circumference of the housing assembly 10 to abut against the inner circumference of the housing assembly 10. In this way, a predetermined gap can be maintained between the inner circumference of the housing assembly 10 and the outer circumference of the bone conduction speaker 11 in the radial direction of the bone conduction speaker 11 to facilitate filling of the fixing glue 1062. By arranging the positioning portion 1061 on the vibration transmission plate 113, the positioning portion 1061 can be easily processed, and the processing technology is simple. In addition, the vibration of the vibration transmission plate 113 is mainly in the central axis direction Z, and mainly relies on the elastic deformation of the connecting rod assembly 1133. The positioning portion 1061 is arranged on the outer ring edge of the annular fixing portion 1132. On the one hand, it will not affect the elastic deformation of the connecting rod assembly 1133, thereby ensuring the vibration and sound quality effects of the bone conduction speaker 11. On the other hand, it can also enhance the strength of the annular fixing portion 1132. Moreover, the displacement of the annular fixing portion 1132 is small, and the position is relatively fixed, which can better support the inner circumference of the shell assembly 10 and can more stably maintain the predetermined gap.

[0184] As previously mentioned, there can be two vibration transmitting plates 113, one on each side of the bone conduction speaker 11 along the central axis Z. Both vibration transmitting plates 113 can be provided with a positioning portion 1061 on the outer edge of the annular fixing portion 1132, thereby ensuring more uniform force on the bone conduction speaker 11. Along the central axis Z of the bone conduction speaker 11, the gap between the inner circumference of the housing assembly 10 and the outer circumference of the bone conduction speaker 11 can maintain a consistent width, thereby ensuring more accurate positioning of the bone conduction speaker 11 and improving the filling effect of the fixing glue 1062.

[0185] In some embodiments, the positioning portion 1061 is placed on the outer ring edge of the annular fixing portion 1132 of the vibration transmission plate 113, which can also improve the installation positioning of the vibration transmission plate 113 when it is fixed to the magnet assembly 112 and the magnetic cover 1111, improve the positioning accuracy, and thus ensure that the magnetic gap between the magnetic cover 1111 fixed with the voice coil 1110 and the magnet assembly 112 is relatively uniform and balanced, thereby improving the sound quality. For example, the bone conduction speaker 11 can be assembled by using two upper and lower jigs. The lower jig is used to position the magnet assembly 112 and the magnetic cover 1111 fixed with the voice coil 1110, and the upper jig is used to position the vibration plate 113. In this way, the vibration plate 113 can be positioned by the positioning portion 1061. The upper jig can be provided with holes for welding the vibration plate 113 to the magnet assembly 112 and the magnetic cover 1111. The upper jig aligns the corresponding position on the vibration plate 113 (for example, the center fixing portion 1131) with the corresponding hole on the upper jig. Then, the upper jig and the lower jig are aligned so that the corresponding positions on the vibration transmission plate 113 (for example, the central fixing portion 1131) and the corresponding positions on the magnet assembly 112 (for example, the raised portion 1105) can be aligned with each other, and the corresponding positions on the vibration transmission plate 113 (for example, the annular fixing portion 1132) and the corresponding positions on the magnetic cover 1111 can also be aligned with each other, and then the corresponding subsequent operations are performed through the holes on the upper jig, such as pre-deforming the vibration transmission plate 113, fixing the vibration transmission plate 1113, the magnetic cover 1111 and the magnet assembly 112.

[0186] As shown in FIG. 19 to FIG. 21 , the positioning portion 1061 may also be integrally formed on the inner circumferential surface of the housing assembly 10 .

[0187] In some embodiments, the inner circumference of the housing assembly 10 may be provided with a plurality of positioning portions 1061 at intervals. The plurality of positioning portions 1061 may be spaced apart on the housing assembly 10 and may extend toward the bone conduction speaker 11 and abut against the outer circumference of the bone conduction speaker 11, thereby creating a certain gap between the inner circumference of the housing assembly 10 and the outer circumference of the bone conduction speaker 11. Alternatively, the plurality of positioning portions 1061 may be integrally formed on the inner circumference of the housing 101. By providing the positioning portion 1061 on the inner circumferential surface of the housing assembly 10, the bone conduction speaker 11 can be positioned during assembly, facilitating assembly. Furthermore, since the positioning portion 1061 is provided on the inner circumferential surface of the housing assembly 10, its position is stable and unaffected by the vibration of the bone conduction speaker 11, thereby stably maintaining a predetermined gap. Furthermore, providing the positioning portion 1061 on the housing assembly 10 allows for a more compact bone conduction speaker 11, facilitating vibration control. Furthermore, the contact of the positioning portion 1061 on the housing assembly 10 with the bone conduction speaker 11 further ensures vibration transmission from the bone conduction speaker 11 to the housing assembly 10, thereby maintaining the sound quality of the bone conduction speaker 11. Furthermore, processing and positioning the positioning portion 1061 on the housing assembly 10 is relatively simple, simplifying the manufacturing process of the positioning portion 1061 and, in turn, simplifying the manufacturing of the earphone 100.

[0188] In other embodiments, as shown in FIG22 , the positioning portion 1061 may include a first positioning portion 1063 integrally formed on the outer edge of the annular fixing portion 1132 and a second positioning portion 1064 integrally formed on the inner circumference of the housing assembly 10. The first positioning portion 1063 is disposed on the annular fixing portion 1132 and extends along the radial direction E of the bone conduction speaker 11 to abut the inner circumference of the housing assembly 10. The second positioning portion 1064 is disposed on the inner circumference of the housing assembly 10 and extends along the radial direction E of the bone conduction speaker 11 to abut the outer circumference of the bone conduction speaker 11. Of course, the first positioning portion 1063 is not limited to being disposed on the annular fixing portion 1132; it may also be disposed on any other outer circumference of the bone conduction speaker 11, such as the outer circumference of the voice coil assembly 111.

[0189] By providing positioning portions 1061 on both the bone conduction speaker 11 and the shell assembly 10, bidirectional abutment in the radial direction E is achieved. Even when the supporting effect of the positioning portion 1061 on one side is poor, the positioning portion 1061 on the other side can still ensure the supporting effect, thereby improving redundancy and further stabilizing the position of the bone conduction speaker 11, so that the positioning portion 1061 can more stably support the gap between the inner circumference of the shell assembly 10 and the outer circumference of the bone conduction speaker 11, so as to facilitate the addition of fixing glue 1062, and make the force on the bone conduction speaker 11 more uniform, so that the structure of the earphone 100 is more stable.

[0190] Optionally, the first positioning portion 1063 and the second positioning portion 1064 may be staggered along the circumference of the bone conduction speaker 11. This arrangement facilitates assembly of the bone conduction speaker 11 into the housing assembly 10, reduces contact and friction between the first positioning portion 1063 and the second positioning portion 1064, and further stabilizes the position of the bone conduction speaker 11, thereby enhancing the structural integrity of the earphone 100.

[0191] Referring to FIG. 23 , as previously described, the housing assembly 10 may be provided with a housing cavity 1001. The bone conduction speaker 11 may be disposed within the housing cavity 1001. A vibration transmission plate 113 may connect the voice coil assembly 111 and the magnet assembly 112, elastically constraining the relative movement of the voice coil assembly 111 and the magnet assembly 112 along the central axis Z of the bone conduction speaker 11. The first of the voice coil assembly 111 and the magnet assembly 112 is rigidly connected to the housing assembly 10, thereby transmitting vibrations generated by the relative movement of the voice coil assembly 111 and the magnet assembly 112 to the housing assembly 10 for bone conduction.

[0192] Specifically, the first of the voice coil assembly 111 and the magnet assembly 112 may be referred to as the voice coil assembly 111, and the second may be referred to as the magnet assembly 112. In this case, the voice coil assembly 111 may be rigidly connected to the housing assembly 10. In other embodiments, the first of the voice coil assembly 111 and the magnet assembly 112 may be referred to as the magnet assembly 112, and the second may be referred to as the magnet assembly 112.

[0193] As previously described, the central fixing portion 1131 can be connected to the magnet assembly 112, and the annular fixing portion 1132 can be connected to the voice coil assembly 111. The vibration transmission plate 113 itself can be elastic or capable of elastic deformation. When the voice coil assembly 111 and the magnet assembly 112 move relative to each other, the vibration transmission plate 113 can adaptively elastically deform. When the vibration transmission plate 113 adaptively elastically deforms, the central fixing portion 1131 connected to the magnet assembly 112 and the annular fixing portion 1132 connected to the voice coil assembly 111 can achieve relative movement along the central axis direction Z.

[0194] Under normal circumstances, when the earphone 100 is normally outputting sound, the relative motion range of the magnet assembly 112 and the voice coil assembly 111 is within the allowable range, that is, the relative motion between the magnet assembly 112 and the voice coil assembly 111 is generated by elastic deformation of the vibration transmission plate 113. However, in some special scenarios, the relative motion range of the magnet assembly 112 and the voice coil assembly 111 may exceed the allowable range. For example, when the earphone 100 falls to the ground or collides, the magnet assembly 112 continues to move due to inertia when the earphone 100 contacts the ground, which may cause the magnet assembly 112 to move too far relative to the voice coil assembly 111, that is, the force exerted on the vibration transmission plate 113 is large, resulting in excessive stretching of the vibration transmission plate 113, which may cause the vibration transmission plate 113 to exceed the elastic deformation range and undergo plastic deformation, resulting in a decrease in elasticity, thereby reducing the elastic constraint effect and affecting the performance of the earphone 100.

[0195] To alleviate the aforementioned issues, the housing assembly 10 may be provided with a stopper 107. The stopper 107 can rigidly constrain the relative motion range between the voice coil assembly 111 and the magnet assembly 112 along the central axis direction Z. Specifically, the stopper 107 can rigidly constrain the magnet assembly 112 when the magnet assembly 112 moves excessively compared to the voice coil assembly 111, thereby limiting the motion of the magnet assembly 112 and reducing the elasticity of the vibration transmission plate 113 caused by the excessive motion.

[0196] By setting the stopper 107, the relative movement range between the voice coil assembly 111 and the magnet assembly 112 is limited, so as to avoid the relative movement range between the voice coil assembly 111 and the magnet assembly 112 being too large or reduce the possibility of the relative movement range between the voice coil assembly 111 and the magnet assembly 112 being too large, thereby avoiding the vibration transmission plate 113 from being over-stretched as much as possible.

[0197] The rigid constraint applied by the stopper 107 and the elastic constraint applied by the vibration transmission plate 113 are relative, that is, when the stopper 107 stops the magnet assembly 112, the constraint strength applied to the magnet assembly 112 is greater than the constraint strength applied by the vibration transmission plate 113 to the magnet assembly 112 and the voice coil assembly 111.

[0198] Optionally, a stopper 107 is provided protruding from the housing assembly 10. Specifically, the first of the voice coil assembly 111 and the magnet assembly 112 is fixedly connected to the housing assembly 10, and the stopper 107 is provided on a surface of the housing assembly 10 facing the second of the voice coil assembly 111 and the magnet assembly 112 along the central axis direction Z. After the second of the voice coil assembly 111 and the magnet assembly 112 moves a predetermined distance relative to the first of the voice coil assembly 111 and the magnet assembly 112, the stopper 107 can abut against the second of the voice coil assembly 111 and the magnet assembly 112 or the vibration transmitting plate 113, thereby effectively limiting the relative motion range of the voice coil assembly 111 and the magnet assembly 112.

[0199] For example, the voice coil assembly 111 is fixedly connected to the housing assembly 10, and the stopper 107 can abut against the magnet assembly 112 or the vibration-transmitting plate 113 after the magnet assembly 112 moves a predetermined distance relative to the voice coil assembly 111, thereby applying a rigid constraint to the magnet assembly 112 or the vibration-transmitting plate 113. This can limit the relative motion range of the voice coil assembly 111 and the magnet assembly 112.

[0200] In other embodiments, the stopper 107 may also be in a plate shape or any other shape.

[0201] Optionally, the stopper 107 is integrally formed with the housing assembly 10 , which can improve production efficiency and assembly efficiency.

[0202] The stopper 107 can directly or indirectly apply a rigid constraint to the magnet assembly 112 after the magnet assembly 112 moves a predetermined distance relative to the voice coil assembly 111. Optionally, the stopper 107 can indirectly apply a rigid constraint to the magnet assembly 112 by directly applying a rigid constraint to the vibration transmission plate 113.

[0203] 24 , the stopper 107 may abut against the central fixing portion 1131 and / or the connecting rod assembly 1133 of the vibration transmission plate 113 to apply a rigid constraint to the vibration transmission plate 113 .

[0204] Optionally, the stopper 107 includes a first stopper 1071 for abutting the central fixing portion 1131. The first stopper 1071 can effectively limit the vibration range of the vibration transmitting plate 113 and thus limit the relative motion range of the voice coil assembly 111 and the magnet assembly 112.

[0205] Optionally, the stopper 107 includes a second stopper 1072 for abutting the connecting rod assembly 1133. The second stopper 1072 can cooperate with the first stopper 1071 to enable the stopper 107 to abut against the vibration transmission plate 113 over a wider range, thereby providing more comprehensive contact with the vibration transmission plate 113 and further protecting the vibration transmission plate 113.

[0206] Optionally, the number of the first stopper 1071 may be at least one. Optionally, the number of the second stopper 1072 may be at least two.

[0207] During vibration of the vibration transmitting plate 113, the movable distance of the region near the center of the vibration transmitting plate 113 (e.g., the central fixing portion 1131) is generally greater than the movable distance of the region farther from the center of the vibration transmitting plate 113. If the first and second stoppers 1071, 1072 are located at the same distance from the bone conduction speaker 11, but the extent of movement of different regions of the vibration transmitting plate 113 differs, the first and second stoppers 1071, 1072 may not simultaneously abut the vibration transmitting plate 113, thereby reducing the rigid restraint effect.

[0208] Optionally, the vibration transmitting plate 113 may be pre-deformed. That is, in its natural state, the connecting rod assembly 1133 has an extension component, originating from the annular fixing portion 1132 and directed toward the interior of the bone conduction speaker 11 along the central axis Z. The vibration transmitting plate 113 may be pre-deformed toward the interior of the bone conduction speaker 11 or toward the exterior of the bone conduction speaker 11. The natural state may refer to the state of the bone conduction speaker 11 after assembly, or when the bone conduction speaker 11 is not in operation, when the voice coil assembly 111 and the magnet assembly 112 are relatively stationary.

[0209] In the direction of the central axis Z, the distance d2 between the first stopper 1071 and the central fixing portion 1131 is greater than the distance d1 between the second stopper 1072 and the connecting rod assembly 1133. This increases the likelihood that the first stopper 1071 and the second stopper 1072 will simultaneously abut the vibration transmitting plate 113, facilitating the first and second stopper 1071 and 1072 to jointly exert a rigid constraint on the vibration transmitting plate 113. Furthermore, compared to the case where the distance d2 between the first stopper 1071 and the central fixing portion 1131 is equal to the distance d1 between the second stopper 1072 and the connecting rod assembly 1133, the distance d2 between the first stopper 1071 and the central fixing portion 1131 is greater than the distance d1 between the second stopper 1072 and the connecting rod assembly 1133. This provides sufficient vibration space for the vibration transmitting plate 113 during normal operation, thereby improving the sound quality of the earphone 100.

[0210] Of course, in their natural state, the second stopper 1072 and the connecting rod assembly 1133 can be spaced apart or in contact with each other. The connecting rod assembly 1133 is relatively weak in rigidity and easily stretched. The natural contact between the second stopper 1072 and the connecting rod assembly 1133 can further limit the vibration of the vibration transmitting plate 113 and better protect the connecting rod assembly 1133.

[0211] Optionally, the distance d2 between the first stopper 1071 and the central fixing portion 1131 is greater than or equal to 0.1 mm. This allows the first stopper 1071 to more sensitively contact the vibration transmission plate 113, thereby providing timely protection. In other words, the bone conduction speaker 11 can achieve good bone conduction while being less susceptible to damage from drops or collisions.

[0212] Considering that the distance d1 between the second stopper 1072 and the connecting rod assembly 1133 is smaller than the distance d2 between the first stopper 1071 and the central fixing portion 1131, if the second stopper 1072 is too close to the first stopper 1071 (central fixing portion 1131), the movable distance of the magnet assembly 112 (i.e., the relative motion range of the voice coil assembly 111 and the magnet assembly 112) may be excessively restricted. Alternatively, in the extension direction of the connecting rod assembly 1133, the abutment position of the second stopper 1072 and the connecting rod assembly 1133 is closer to the annular fixing portion 1132 than to the central fixing portion 1131. In this case, the vibration level of the central fixing portion 1131 can be maintained to a certain extent, thereby ensuring that the voice coil assembly 111 and the magnet assembly 112 of the bone conduction speaker 11 have a relatively large relative motion range within a reasonable range.

[0213] As previously described, the outer end surface 1103 of the second of the voice coil assembly 111 and magnet assembly 112 may include a central region 1104 and a peripheral region 1106 surrounding the central region 1104 (see Figures 7 and 8 ). Central region 1104 is provided with a raised portion 1105. Raised portion 1105 protrudes relative to peripheral region 1106. Central fixing portion 1131 is connected to raised portion 1105. This facilitates assembly of the second of the voice coil assembly 111 and magnet assembly 112 with central fixing portion 1131.

[0214] Taking the case where the outer end surface 1103 is located at the magnet assembly 112 as an example, the outer end surface 1103 may include a central area 1104 and a peripheral area 1106. A protrusion 1105 is provided on the outer end surface 1103 of the magnet assembly 112, and the protrusion 1105 is fixedly connected to the central fixing portion 1131 of the vibration transmitting plate 113. On the one hand, this can make the fixed connection area between the vibration transmitting plate 113 and the magnet assembly 112 smaller, reduce the restriction on the elastic deformation of the vibration transmitting plate 113, and improve the vibration effect while ensuring the elastic constraint effect. On the other hand, by not providing the protrusion 115 on the vibration transmitting plate 113, the vibration transmitting plate 113 can be kept at a certain weight as much as possible to reduce the impact on vibration, and at the same time, the magnet assembly 112 and the vibration transmitting plate 113 can be connected more reliably and stably.

[0215] Specifically, when the central fixing portion 1131 of the vibration transmission plate 113 is circular, the raised portion 1105 can also be cylindrical. The shape of the central region 1104 can be configured to match the shape of the central fixing portion 1131, so that a stable connection is formed between the central region 1104 as a whole and the central fixing portion 1131 of the vibration transmission plate 113.

[0216] Optionally, as shown in FIG17 , the housing assembly 10 includes a housing 101 and a housing 102 that mate with each other along the central axis direction Z. A stopper 107 is provided on the inner surface of the housing 101 and / or the housing 102. The outer surface of the housing 101 and / or the housing 102 contacts the user's skin. This structure facilitates assembly of the bone conduction speaker 11.

[0217] Optionally, the first of the voice coil assembly 111 and the magnet assembly 112 is disposed around the second of the voice coil assembly 111 and the magnet assembly 112. For example, the voice coil assembly 111 is disposed around the magnet assembly 112. The voice coil assembly 111 is rigidly connected to the housing 101 and / or the housing 102. Arranging the voice coil assembly 111 around the magnet assembly 112 facilitates miniaturization of the magnet assembly 11, thereby reducing the volume of the bone conduction speaker 11 and, consequently, the headphone 100. In other embodiments, the magnet assembly 112 may also be disposed outside the voice coil assembly 111.

[0218] Optionally, the shell 102 further presses and fixes the voice coil assembly 111 on the shell 101, so that the voice coil assembly 111 can be stably clamped between the shell 101 and the shell 102, thereby improving the fixing effect, thereby improving the effect of transmitting vibration to the shell assembly 10, and conveniently assembling the bone conduction speaker 11 in the shell assembly 10.

[0219] The above are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A headset, characterized in that: The earphone comprises: A shell assembly, wherein the shell assembly is provided with a receiving cavity and a sound outlet hole for connecting the receiving cavity with an external environment; An air conduction loudspeaker, the air conduction loudspeaker comprising a magnetic circuit assembly, a voice coil and a diaphragm, the magnetic circuit assembly comprising a cover body having an open end and an annular flange arranged at the open end of the cover body and protruding from the outer circumferential surface of the cover body, the edge of the diaphragm is fixed to the annular flange and covers the open end of the cover body, the voice coil is connected to the diaphragm, and the diaphragm is located on the side of the cover body away from the sound outlet.

2. The earphone according to claim 1, characterized in that An annular table surface is arranged on the cavity wall of the accommodating cavity, the annular flange is pressed on the annular table surface, the diaphragm divides the accommodating cavity into a first cavity portion and a second cavity portion, the first cavity portion is located on the side of the diaphragm away from the sound outlet, the second cavity portion is located on the side of the diaphragm facing the sound outlet, the magnetic circuit assembly is located in the second cavity portion, and the shell assembly is provided with a pressure relief hole for connecting the first cavity portion with the external environment.

3. The earphone according to claim 2, characterized in that The diaphragm is located on a side of the annular flange facing the annular table surface. The earphone further comprises a sealant, which seals a gap between a side of the annular flange facing away from the annular table surface and the shell assembly.

4. The earphone according to claim 3, characterized in that: The annular flange cooperates with the shell assembly, and a glue containing groove for containing the sealant is formed on the side of the annular flange away from the annular table.

5. The earphone according to claim 2, characterized in that: The annular flange is provided with a sound guide hole, and the sound guide hole is configured to connect the space enclosed by the diaphragm and the magnetic circuit component with the second cavity part outside the magnetic circuit component.

6. The earphone according to claim 1, characterized in that The shell assembly includes a first shell, a second shell and a third shell, the third shell cooperates with the first shell and / or the second shell along the vibration direction of the diaphragm, the third shell is used to accommodate the end of the cover body away from the diaphragm, and the sound outlet is arranged on the third shell; the cover body includes an end face and a peripheral side face, the end face is connected to the peripheral side face, and the end face is arranged opposite to the sound outlet; a first gap is provided between the connection area between the end face and the peripheral side face located on the first side and the third shell, a second gap is provided between the connection area between the end face and the peripheral side face located on the second side and the third shell, the first gap is smaller than the second gap, and the first side and the second side are opposite to each other.

7. The earphone according to claim 6, characterized in that In the wearing state, the first side is located on the side of the magnetic circuit component close to the user's face.

8. The earphone according to claim 6, characterized in that: A portion of the end surface adjacent to the peripheral side surface on the first side is in contact with and fixed to the third shell, or a connection area between the end surface and the peripheral side surface on the first side is in contact with and fixed to the third shell.

9. The earphone according to any one of claims 6 to 8, characterized in that: In a cross section perpendicular to the vibration direction of the diaphragm, the cover body has a length direction and a width direction, the size of the cover body along the length direction is larger than the size of the cover body along the width direction, and the first side and the second side are arranged opposite to each other along the width direction.

10. The earphone according to any one of claims 6 to 8, characterized in that: On the first side, an average distance between the annular flange and the third shell along the vibration direction of the diaphragm is greater than or equal to 0.5 mm, and on the second side, the second gap is greater than or equal to 0.5 mm.

11. The earphone according to any one of claims 6 to 8, characterized in that: At least a portion of the outer surface of the third housing is inclined toward the first housing and the second housing in a direction from the second side to the first side.

12. The earphone according to claim 1, characterized in that The cover body is a magnetically conductive cover, the magnetic circuit assembly further includes a magnet disposed in the magnetically conductive cover, and the voice coil extends into a magnetic gap formed by the magnetically conductive cover and the magnet.

13. The earphone according to claim 1, characterized in that The distance between the diaphragm and the cavity wall of the accommodating cavity in the vibration direction of the diaphragm is greater than 0.8 mm.

14. The earphone according to any one of claims 1 to 13, characterized in that: The shell assembly is provided with a first accommodating chamber and a second accommodating chamber which are isolated from each other, wherein the sealing property of the first accommodating chamber is greater than the sealing property of the second accommodating chamber; wherein the earphone also includes a bone conduction speaker which is arranged in the first accommodating chamber; and the air conduction speaker is arranged in the second accommodating chamber.

15. The earphone according to claim 14, characterized in that The shell assembly includes a first shell, a second shell and a third shell. The first shell and the second shell cooperate with each other to form the first accommodating cavity. The first shell and / or the second shell further form a part of the second accommodating cavity. The third shell cooperates with the first shell and / or the second shell to form another part of the second accommodating cavity.

16. The earphone according to claim 15, characterized in that The third shell is provided with a sound outlet hole communicating with the second accommodating chamber, and the first shell and / or the second shell is provided with a pressure relief hole communicating with the second accommodating chamber.

17. The earphone according to claim 16, characterized in that The pressure relief hole is arranged to extend obliquely toward the side where the first accommodating cavity is located.

18. The earphone according to claim 15, characterized in that The vibration direction of the bone conduction speaker is arranged crosswise with the vibration direction of the air conduction speaker, the first shell and the second shell cooperate with each other along the vibration direction of the bone conduction speaker, and the third shell cooperates with the first shell and / or the second shell along the vibration direction of the air conduction speaker.

19. The earphone according to claim 18, characterized in that The bone conduction speaker includes a voice coil assembly and a magnet assembly. The voice coil assembly is arranged around the magnet assembly and is fixedly connected to the first shell and / or the second shell. The surface of the first shell and / or the second shell that is arranged opposite to the bone conduction speaker along the vibration direction of the bone conduction speaker is used to contact the user's skin and transmit bone conduction vibration.

20. The headset according to claim 19, characterized in that The voice coil assembly includes two groups of voice coils spaced apart along the central axis of the bone conduction speaker and a magnetic conductive cover wound around the periphery of the two groups of voice coils. The magnet assembly includes a magnet and two magnetic conductive plates. The two magnetic conductive plates are respectively arranged on the two side end surfaces of the magnet that are arranged opposite to each other along the central axis. The radial projections of the two magnetic conductive plates along the bone conduction speaker are respectively overlapped with the two groups of voice coils, and the power supply directions of the two groups of voice coils are opposite to each other.

21. The earphone according to claim 14, characterized in that The headset is provided with a first working mode and a second working mode. In the first working mode, the bone conduction speaker plays sound signals of a first frequency band, and the air conduction speaker plays sound signals of a second frequency band; in the second working mode, the bone conduction speaker plays sound signals of the first frequency band and the second frequency band, and the first frequency band and the second frequency band are at least partially staggered in the frequency domain.

22. The headset according to claim 21, characterized in that The headset is further provided with a third working mode. In the third working mode, the air conduction speaker plays sound signals of the first frequency band and the second frequency band.

23. The earphone according to claim 21 or 22, characterized in that: The earphone includes a wearing component, the shell component includes a first part and a second part, the first part is connected to the wearing component, the second part is detachably connected to the first part or the wearing component, the bone conduction speaker is arranged on the first part, and the air conduction speaker is arranged on the second part and can be removed from the wearing component in a detachable manner along with the second part.

24. The earphone according to claim 23, characterized in that The first portion is provided with a first electrode portion, and the second portion is provided with a second electrode portion. When the first portion and the second portion are connected, the first electrode portion and the second electrode portion are in contact with each other and are electrically connected.

25. The headset according to claim 24, characterized in that The first part is provided with a first connection part spaced apart from the first connection part, and the second part is provided with a second connection part. The first connection part and the second connection part are configured to be detachably connected by at least one of snap connection, bonding, magnetic attraction and threaded connection.

26. The earphone according to any one of claims 1 to 13, characterized in that: The shell assembly is provided with a first accommodating chamber and a second accommodating chamber which are isolated from each other; wherein the earphone also includes a bone conduction speaker which is arranged in the first accommodating chamber; the air conduction speaker is arranged in the second accommodating chamber; wherein the shell assembly is provided with a pressure relief hole for connecting the second accommodating chamber with the external environment, and the pressure relief hole is arranged to extend toward the side where the first accommodating chamber is located.

27. The earphone according to claim 26, characterized in that A projection of the pressure relief hole in a direction perpendicular to an arrangement direction of the first accommodating cavity and the second accommodating cavity at least partially overlaps with the first accommodating cavity.

28. The earphone according to claim 26, characterized in that The pressure relief hole is arranged to extend obliquely toward the side where the first accommodating chamber is located, and in a direction perpendicular to the arrangement direction of the first accommodating chamber and the second accommodating chamber, a size of the pressure relief hole gradually increases in a direction from the second accommodating chamber to the external environment.

29. The earphone according to claim 26, characterized in that The shell assembly includes a partition wall for isolating the first accommodating chamber and the second accommodating chamber, and at least a portion of the partition wall extends toward the side where the first accommodating chamber is located and forms a portion of the hole wall of the pressure relief hole.

30. The earphone according to claim 29, characterized in that In a cross section perpendicular to the vibration direction of the bone conduction speaker, the bone conduction speaker has a long side edge and a short side edge, the size of the long side edge is larger than the size of the short side edge, the partition wall includes a first wall segment and a second wall segment, the first wall segment is arranged side by side with the long side edge, the second wall segment is connected to the first wall segment, and extends obliquely from the periphery of the connection between the long side edge and the short side edge toward the side where the first accommodating cavity is located, and the second wall segment is used to form a partial hole wall of the pressure relief hole.

31. The earphone according to claim 29, characterized in that The shell assembly includes a first shell, a second shell and a third shell, the partition wall is arranged on the first shell and / or the second shell, the first shell and the second shell cooperate with each other to form the first accommodating chamber and the pressure relief hole, the first shell and / or the second shell further form a part of the second accommodating chamber, and the third shell cooperates with the first shell and / or the second shell to form another part of the second accommodating chamber.

32. The earphone according to claim 31, characterized in that The vibration direction of the bone conduction speaker and the vibration direction of the air conduction speaker are arranged to cross each other, the first shell and the second shell cooperate with each other along the vibration direction of the bone conduction speaker, and the third shell cooperates with the first shell and / or the second shell along the vibration direction of the air conduction speaker.

33. The earphone according to claim 32, characterized in that The partition wall is arranged on the first shell, and the first shell is provided with a first sub-accommodating chamber and a second sub-accommodating chamber located on opposite sides of the partition wall. The opening direction of the first sub-accommodating chamber is arranged along the wall surface of the partition wall, and the opening direction of the second sub-accommodating chamber is arranged to cross the wall surface of the partition wall. The second shell is provided with a third sub-accommodating chamber, and the second shell cover is arranged at the opening end of the first sub-accommodating chamber, and the third sub-accommodating chamber cooperates with the first sub-accommodating chamber to form the first accommodating chamber; the third shell is provided with a fourth sub-accommodating chamber, and the third shell cover is arranged at the opening end of the second sub-accommodating chamber, and the fourth sub-accommodating chamber cooperates with the second sub-accommodating chamber to form the second accommodating chamber.

34. The earphone according to claim 29, characterized in that The air conduction speaker includes a diaphragm, which divides the second accommodating cavity into a first cavity portion located on the side of the diaphragm away from the partition wall and a second cavity portion located between the diaphragm and the partition wall. The pressure relief hole is connected to the second cavity portion, and the shell assembly is also provided with a sound outlet hole connected to the first cavity portion.

35. The earphone according to claim 34, characterized in that The air conduction speaker further includes a magnetic circuit component and a voice coil, the magnetic circuit component includes a cover body with an open end and an annular flange arranged at the open end of the cover body and protruding from the outer circumferential surface of the cover body, the edge of the diaphragm is fixed to the side of the annular flange facing the open end and covers the open end of the cover body, the voice coil is connected to the diaphragm, and the diaphragm is arranged away from the sound outlet compared to the cover body.

36. An earphone according to claim 34, characterized in that The center of the pressure relief hole is not higher than the center of the sound outlet hole, and a line connecting the center of the pressure relief hole and the center of the sound outlet hole points to the ear of the user when the wearer is in the wearing state; and / or a line connecting the center of the pressure relief hole and the center of the sound outlet hole has an angle ≥0° and <90° with the coronal axis of the user when the wearer is in the wearing state, and an angle >0° and ≤90° with the vertical axis of the user.

37. The earphone according to any one of claims 26 to 36, characterized in that: The central axis of the bone conduction speaker and the central axis of the air conduction speaker are skew lines, and in a direction perpendicular to the central axis of the bone conduction speaker and the central axis of the air conduction speaker, the central axis of the bone conduction speaker is farther away from the pressure relief hole than the central axis of the air conduction speaker.

38. The earphone according to claim 37, characterized in that The distance between the central axis of the bone conduction speaker and the central axis of the air conduction speaker is 0.2-1.2 mm.

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