Earphone

Abstract

Disclosed in the present application is an earphone. The earphone comprises a core housing, and a speaker assembly and a button assembly which are disposed inside the core housing, wherein the speaker assembly comprises a main speaker and an acoustic cavity bracket, the acoustic cavity bracket cooperating with the main speaker to form an acoustic rear cavity; the button assembly is supported on the acoustic cavity bracket; and a button portion is provided on the core housing, which is configured to press and trigger the button assembly. By means of the arrangement, the present application can save on the internal space of the earphone, and reduce the size of the earphone, thereby improving the space utilization rate.

Description

Earphone TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, and particularly relates to an earphone. BACKGROUND

[0002] With the continuous popularity of electronic devices, electronic devices have become indispensable social and entertainment tools in people's daily life, and people's requirements for electronic devices are also getting higher and higher. Electronic devices such as earphones and smart glasses have been widely used in people's daily life, and they can be used in cooperation with terminal devices such as mobile phones and computers to provide a feast for the user's hearing.

[0003] A key is usually arranged on a traditional earphone to be pressed by a user to control the earphone, but the arrangement of the key and the structure related to the key makes the earphone large in size.

[0004] SUMMARY

[0005] To solve the above technical problems, one technical scheme adopted by the present application is to provide an earphone, which comprises a core shell, a loudspeaker assembly and a key assembly arranged in the core shell, the loudspeaker assembly comprises a main loudspeaker and a sound cavity support, the sound cavity support cooperates with the main loudspeaker to form an acoustic back cavity, the key assembly is supported on the sound cavity support, and a key part for pressing and triggering the key assembly is arranged on the core shell.

[0006] In some embodiments, the earphone further comprises a main control circuit board, the main control circuit board is arranged in a layering mode along the vibration direction of the main loudspeaker and the loudspeaker assembly, and the main surface of the main control circuit board is arranged to face or face away from the loudspeaker assembly, the sound cavity support is arranged around the main loudspeaker, the key assembly is supported on the outer peripheral surface of the sound cavity support and is electrically connected to the main control circuit board.

[0007] In some embodiments, the key assembly comprises a support plate and a key body arranged on the side of the support plate away from the sound cavity support, the key body is fixedly connected to the support plate, the support plate is fixedly supported on the outer peripheral surface of the sound cavity support, and the included angle between the main surface of the support plate away from the sound cavity support and the axis of the sound cavity support is 0-10 degrees.

[0008] In some embodiments, the main surface of the support plate away from the sound cavity support is arranged perpendicularly to the main surface of the main control circuit board facing or facing away from the loudspeaker assembly, or the included angle between the main surface of the support plate and the main surface of the main control circuit board is 80-90 degrees.

[0009] In some embodiments, the outer peripheral surface of the sound cavity support is provided with a support surface, the side of the support plate facing the sound cavity support is supported on the support surface, and a limiting mechanism for limiting the support plate is further arranged on the sound cavity support.

[0010] In some embodiments, the limiting mechanism comprises a first limiting portion arranged on the support surface away from the main control circuit board, the first limiting portion is arranged to limit the support plate in a first direction, wherein the first direction is parallel to the support surface and away from the main control circuit board.

[0011] In some embodiments, a pressing block is arranged between the main control circuit board and the support plate, the pressing block is used to elastically abut the first plate edge of the support plate on the side facing the main control circuit board, so that the second plate edge of the support plate on the side away from the main control circuit board is supported on the first limiting portion.

[0012] In some embodiments, the limiting mechanism further comprises a second limiting portion, the second limiting portion is arranged on the periphery of the support surface in a second direction, the second direction is parallel to the support surface and perpendicular to the first direction, and the second limiting portion is used to limit the support plate in the second direction.

[0013] In some embodiments, the number of second limiting portions is two arranged in the second direction, and the support plate is located between the two second limiting portions. Alternatively, the support plate comprises a main body portion and a hook-shaped portion connected to the main body portion, the main body portion is supported on the support surface, and the hook-shaped portion is hung on the side of the second limiting portion away from the support surface.

[0014] In some embodiments, the limiting mechanism comprises a third limiting portion arranged in the vertical direction of the support surface and spaced apart from the support surface, the third limiting portion is located on the side of the support surface supporting the support plate, and the third limiting portion is used to limit the support plate in the vertical direction of the support surface.

[0015] In some embodiments, a key hole is formed in the core shell, the key portion comprises a cantilever beam, a key cap and a soft filler, the cantilever beam, the soft filler and the key cap are arranged in the key hole, the cantilever beam is integrally formed with the core shell, one end of the cantilever beam is connected with the hole rim of the key hole, the key cap is arranged at the other end of the cantilever beam, and the soft filler is used to fill the gap between the cantilever beam and the key cap and the hole rim of the key hole.

[0016] In some embodiments, the earphone further comprises an ear hook, the core shell has a connection end connected with the ear hook and a free end away from the connection end, in the wearing state, the ear hook is hung between the auricle and the head of the user, the core shell is located on the front side of the auricle, the free end at least partially covers or extends into the concha cavity, the core shell has a length direction, a thickness direction and a width direction which are orthogonal to each other, the length direction is the spacing direction of the connection end and the free end, the thickness direction is the direction towards or away from the auricle in the wearing state, the core shell comprises a first side wall and a second side wall arranged in the width direction, and the key portion is arranged on the first side wall or the second side wall.

[0017] In some embodiments, the earphone further comprises an ear hook and a magnet assembly, the core shell has a connecting end connected with the ear hook and a free end away from the connecting end, and the polarization direction of the magnet assembly is the same as the polarization direction of the main magnet of the main speaker; the speaker assembly further comprises an auxiliary speaker, the magnet assembly and the auxiliary speaker are arranged on the side of the main speaker close to the user's pinna in the wearing state along the vibration direction of the main speaker, and the magnet assembly and the auxiliary speaker at least partially overlap when viewed along the length direction of the core shell, and the length direction is the interval direction of the connecting end and the free end.

[0018] In some embodiments, the ratio between the projection area of the magnet assembly along the thickness direction of the core shell and the projection area of the main magnet of the main speaker along the thickness direction is between 0.1 and 0.2, the thickness direction of the core shell is the direction of the core shell towards or away from the user's pinna in the wearing state, and the thickness direction and the length direction are orthogonal to each other.

[0019] In some embodiments, the vibration direction of the main speaker and the length direction define a symmetry plane, the magnet assembly comprises two magnets, and the two magnets are located on both sides of the symmetry plane and are symmetrically arranged relative to the symmetry plane.

[0020] The earphone provided by the application is provided with a main speaker, an acoustic cavity support and a key assembly, the acoustic cavity support can cooperate with the main speaker to form an acoustic rear cavity, thereby ensuring the sound pickup effect of the main speaker, and the acoustic cavity support can support the key assembly, so that the function of the acoustic cavity support is multiplexed, and a supporting component does not need to be additionally arranged to support and fix the key assembly, thereby saving the space inside the earphone, reducing the size of the earphone and improving the space utilization rate. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 is a front profile schematic view of the ear of a user according to the application;

[0022] Fig. 2 is a side view of an embodiment of the earphone provided by the application;

[0023] Fig. 3 is a schematic view of the earphone embodiment shown in Fig. 2 in a wearing state;

[0024] Fig. 4 is an exploded structural schematic view of a sound generating part in the earphone embodiment shown in Fig. 2;

[0025] Fig. 5 is another exploded structural schematic view of the sound generating part in the earphone embodiment shown in Fig. 2;

[0026] Fig. 6 is a sectional structural schematic view of the earphone embodiment shown in Fig. 2 along the section line A-A;

[0027] Fig. 7 is an enlarged schematic view of a local region I of the sound generating part shown in Fig. 4;

[0028] Fig. 8 is an enlarged schematic view of a partial region J of the sound emitting portion shown in Fig. 6;

[0029] Fig. 9 is another exploded structural schematic view of the sound emitting portion in the earphone embodiment shown in Fig. 2;

[0030] Fig. 10 is a structural schematic view of the sound emitting portion shown in Fig. 9 from another perspective of the partial components;

[0031] Fig. 11 is a structural schematic view of the sound emitting portion shown in Fig. 9 from another perspective of the partial components.

DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0033] Reference to "embodiments" in the present application means that the specific features, structures or characteristics described in conjunction with the embodiments can be included in at least one embodiment of the present application. Those of ordinary skill in the art explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0034] The following is an exemplary description of the earphone embodiments to the earphone.

[0035] In conjunction with Fig. 1, the ear 100 of a user can include physiological sites such as the external auditory canal 101, the concha cavity 102 and the auricle 103. Among them, although the external auditory canal 101 has a certain depth and extends to the tympanic membrane of the ear 100, for the convenience of description, the external auditory canal 101 specifically refers to the entrance (i.e. the ear hole) thereof away from the tympanic membrane without special indication. In addition, the concha cavity 102 has a certain volume and depth, and the concha cavity 102 is directly communicated with the external auditory canal 101, that is, the aforementioned ear hole can be simply regarded as located at the bottom of the concha cavity 102.

[0036] The earphone 1 is an audio converter capable of receiving electrical signals emitted from a media player or a receiver and converting the electrical signals into sound waves that can be heard by the user. In some embodiments, the earphone 1 can be an open earphone, such as an ear hook earphone, a behind-the-ear earphone or an ear clip earphone, etc.

[0037] As shown in FIG. 2 or FIG. 3, the earphone 1 can be an ear-hanging earphone, in some embodiments, at least part of the earphone 1 can be inserted into the concha cavity 102 of the user (wearer) in the wearing state, so as to improve the stability of wearing. In some embodiments, the sound generating part of the earphone 1 can at least partially cover the pinna of the user's ear, such as the antihelix, the cymba concha, or the triangular fossa (not shown in the figure), but does not block or visually obstruct the external auditory canal 101 of the user's ear. In some embodiments, the sound generating part 20 of the earphone 1 can also be attached to or abut against the facial area in front of the user's ear, and the side of the sound generating part 20 for sound generation faces the user's ear or the user's external auditory canal 101.

[0038] Further, different users can have individual differences, resulting in different sizes of the ear 100, such as different shapes and sizes. In order to facilitate description and reduce (or even eliminate) individual differences of different users, a simulator containing a head and its (left and right) ear 100 can be made based on ANSI: S3.36, S3.25 and IEC: 60318-7 standards, such as GRAS 45BC KEMAR, HEAD Acoustics, B&K 4128 series or B&K 5128 series, so as to present the scenario of most users wearing the earphone 1. Taking GRAS KEMAR as an example, the simulator of the ear 100 can be any one of GRAS 45AC, GRAS 45BC, GRAS 45CC or GRAS 43AG; taking HEAD Acoustics as an example, the simulator of the ear 100 can be any one of HMS II.3, HMS II.3LN or HMS II.3LN HEC. Therefore, in this application, descriptions such as "the user wears the earphone 1", "the earphone 1 is in the wearing state" and "in the wearing state" can refer to the earphone 1 described in this application being worn on the ear 100 of the aforementioned simulator. Of course, because different users have individual differences, the earphone 1 worn by different users may have some differences from the earphone 1 worn on the ear 100 of the aforementioned simulator, but such differences should be tolerated.

[0039] As an example, in combination with FIG. 2 and FIG. 3, the earphone 1 can include an ear-hanging 10 and a sound generating part 20 connected to each other. In the wearing state, the ear-hanging 10 can be hung between the pinna 103 of the user and the head, that is, at least part of the ear-hanging 10 of the earphone 1 can be located on the back side of the ear 100, so that the earphone 1 is hung on the ear 100, and the sound generating part 20 can be located on the front side of the pinna 103.

[0040] The sound generating portion 20 can be a sound playing device, which can be used to convert an electrical signal into a sound signal (also referred to as "sound wave" or "sound signal") and propagate to the ear 100 of the wearer.

[0041] In some embodiments, the ear hook 10 can be provided with a battery and / or a circuit board and the like. Of course, the ear hook 10 can also not be provided with a battery and / or a circuit board and the like, and the battery and / or the circuit board and the like can be installed in the sound generating portion 20.

[0042] As an example, in the earphone 1, the ear hook 10 can be replaced by other structures that can be worn on the head of the user, such as a ribbon, a clasp, a ring structure, a hat, a support or a U-shaped structure, etc., to achieve the wearing of the sound generating portion 20. Of course, in some embodiments, the ear hook 10 can be omitted.

[0043] In some embodiments, as shown in FIGS. 2 to 5, the earphone 1 can include a core housing 30, a speaker assembly 40 and a key assembly 50. The speaker assembly 40 and the key assembly 50 are arranged in the core housing 30. The speaker assembly 40 and the key assembly 50 can be installed together in the core housing 30 to save the space inside the core housing 30, reduce the size of the core housing 30 and improve the space utilization.

[0044] As an example, the core housing 30, the speaker assembly 40 and the key assembly 50 can be arranged in the sound generating portion 20. The speaker assembly 40 is a component that can convert an electrical signal into a corresponding sound signal, so that the sound generating portion 20 has the function of playing sound. In this embodiment, the speaker assembly 40 can include a bone conduction speaker and an air conduction speaker. In other embodiments, the speaker assembly 40 can also be arranged as one of the air conduction speaker and the bone conduction speaker.

[0045] In some embodiments, as shown in FIGS. 4 and 6, the speaker assembly 40 can include a main speaker 410 and an acoustic cavity support 420, the acoustic cavity support 420 can cooperate with the main speaker 410 to form an acoustic back cavity 401, and the key assembly 50 is supported on the acoustic cavity support 420. In this way, the acoustic cavity support 420 can not only cooperate with the main speaker 410 to form the acoustic back cavity 401, but also support and fix the key assembly 50, thereby realizing functional reuse. Moreover, the core housing 30 does not need to be additionally provided with a support assembly to support and fix the key assembly 50, thereby saving the space inside the earphone 1, reducing the size of the earphone 1 and improving the space utilization.

[0046] In some embodiments, the core housing 30 is provided with a key portion 310 for pressing and triggering the key assembly 50. The key portion 310 can be arranged correspondingly with the key assembly 50.

[0047] As an example, the key portion 310 can be arranged on the core housing 30, and a part of the key portion 310 can be exposed to the outer surface of the core housing 30 for a user to press to trigger the key assembly 50.

[0048] In some embodiments, the key assembly 50 can be connected with other structures in the earphone 1. Specifically, after the key portion 310 triggers the key assembly 50, the key assembly 50 can generate a corresponding control signal, and the earphone 1 can respond to the control signal to perform corresponding actions. In some embodiments, the control signal generated by the key assembly 50 can be a switch signal, a volume control signal, or a song switching signal, etc. to control the speaker assembly 40, so that the earphone 1 can realize the functions of turning on or off, volume adjustment, or song switching, etc.

[0049] In some embodiments, the main speaker 410 can be an air conduction speaker. As shown in FIG. 6, the main speaker 410 can include a diaphragm 411 and a driving mechanism 412 connected to the diaphragm 411, the diaphragm 411, the driving mechanism 412, the acoustic cavity support 420, and the core housing 30 can jointly form an acoustic back cavity 401, and the diaphragm 411 and the core housing 30 can jointly form an acoustic front cavity 402. That is, the acoustic back cavity 401 and the acoustic front cavity 402 are located on opposite sides of the diaphragm 411.

[0050] In some embodiments, the driving mechanism 412 can include a coil 4121 and a magnetic circuit system 4122, the magnetic circuit system 4122 is connected to the diaphragm 411, the diaphragm 411, the magnetic circuit system 4122, the acoustic cavity support 420, and the core housing 30 can jointly form an acoustic back cavity 401. The coil 4121 and the magnetic circuit system 4122 can be used to generate electromagnetic induction under the control of an electrical signal, thereby driving the diaphragm 411 to vibrate, so that the air in the acoustic front cavity 402 in the main speaker 410 vibrates to produce sound waves and transmits out of the earphone 1.

[0051] As shown in FIG. 4 and FIG. 5, the core housing 30 can also be provided with a sound outlet hole 320 and a pressure relief hole 330. The sound outlet hole 320 can be in communication with the acoustic front cavity 402, and the pressure relief hole 330 can be in communication with the acoustic back cavity 401. The sound waves generated in front of the diaphragm 411 are transmitted to the outside through the sound outlet hole 320, and the air in the acoustic back cavity 401 can be effectively conducted to the outside through the pressure relief hole 330, thereby preventing the pressure in the acoustic back cavity 401 from accumulating to affect the sound quality of the main speaker 410.

[0052] In some embodiments, as shown in FIG. 2 and FIG. 3, the core housing 30 can have a connecting end 340 connected with the ear hook 10 and a free end 350 away from the connecting end 340. As an example, in the wearing state, the ear hook 10 can be hung between the auricle 103 and the head of the user, the core housing 30 is located in front of the auricle 103, and the free end 350 can at least partially cover or extend into the concha cavity 102.

[0053] In some embodiments, the core housing 30 can have a length direction, a thickness direction and a width direction perpendicular to each other.

[0054] In some embodiments, the length direction can be the interval direction of the connecting end 340 and the free end 350. The interval direction of the connecting end 340 and the free end 350 refers to the direction of the line segment connecting the connecting end 340 and the free end 350. In some embodiments, the connecting end 340 and the free end 350 can be irregular or regular circular arcs, and the extension direction of the connecting line of the connecting end 340 and the free end 350 can be defined as the direction of the straight line perpendicular to the parallel tangent plane of the two reference points on the connecting end 340 and the free end 350 with the farthest distance. The length direction can also be defined as the direction of the core housing 30 approaching or away from the back of the head in the wearing state. In other words, the length direction can be the direction shown by the arrow X in FIG. 2 and FIG. 3.

[0055] In some embodiments, the width direction can be defined as the direction of the core housing 30 approaching or away from the top of the head in the wearing state. The width direction can be the direction shown by the arrow Y in FIG. 2 and FIG. 3.

[0056] In some embodiments, the thickness direction of the core housing 30 is the direction towards or away from the auricle 103 in the wearing state. The thickness direction can be the direction shown by the arrow Z in FIG. 2 and FIG. 3. In some embodiments, the thickness direction Z can be substantially parallel to the vibration direction of the main loudspeaker 410. Substantially parallel means that the spatial angle between the two directions is less than 5 degrees.

[0057] In some embodiments, as shown in FIG. 2 and FIG. 3, the core shell 30 can include a first side wall 360 and a second side wall 370 arranged along the width direction Y, and the key part 310 can be arranged on the first side wall 360 or the second side wall 370. The key part 310 is used for the user to press to trigger the key assembly 50. If the key part 310 is arranged on the side away from the auricle 103 or the edge of the core shell 30, the user will move the core shell 30 when pressing the key part 310, causing the key part 310 on the core shell 30 to be difficult to trigger under force, and affecting the wearing stability and comfort of the earphone 1. By arranging the key part 310 on the first side wall 360 or the second side wall 370, the user can hold the first side wall 360 and the second side wall 370 with two fingers at the same time, one finger triggers the key part 310, and the other finger supports on the opposite side wall, so as to facilitate successful pressing of the key part 310, while ensuring that the earphone 1 does not shake in the wearing state, improving the user's experience.

[0058] In other embodiments, the number of key parts 310 can be multiple, and the number of key assemblies 50 can also be multiple and correspond one-to-one with the key parts 310. For example, the number of key parts 310 can be 2, and the two key parts 310 can be arranged on the first side wall 360 and the second side wall 370, respectively, and the number of key assemblies 50 is also two, and corresponds one-to-one with the two key parts 310.

[0059] In some embodiments, as shown in FIG. 4 to FIG. 7, the earphone 1 can also include a main control circuit board 60 arranged in the core shell 30, the main control circuit board 60 can be arranged in layers along the vibration direction of the main loudspeaker 410 and the loudspeaker assembly 40, and the main surface of the main control circuit board 60 can be arranged to face or face away from the loudspeaker assembly 40. The sound cavity support 420 can be arranged around the main loudspeaker 410. The key assembly 50 can be supported on the outer peripheral surface of the sound cavity support 420 and electrically connected to the main control circuit board 60.

[0060] Among them, the main control circuit board 60 refers to the control core part inside the earphone 1, and the main control circuit board 60 can be a PCB (Printed Circuit Board) circuit board or a FPC (Flexible Printed Circuit board) circuit board, etc. The main surface of the main control circuit board 60 refers to the working surface that can be used to arrange chips and connecting wires and other elements.

[0061] In some embodiments, the key assembly 50 can be electrically connected to the circuit arranged on the main surface of the main control circuit board 60 through a wire. In other embodiments, the key assembly 50 can also be electrically connected to the main control circuit board 60 through a flexible circuit board or an auxiliary PCB circuit board, etc.

[0062] In some embodiments, the main surface of the main control circuit board 60 and the axial direction of the main speaker 410 can be perpendicular or substantially perpendicular to each other, and substantially perpendicular means that the spatial included angle between the two directions is between 75° and 105°.

[0063] In some embodiments, the vibration direction of the main speaker 410 can be the axial direction of the main speaker 410, and the main control circuit board 60 can be arranged in a stacked manner along the axial direction of the main speaker 410. In addition, the sound cavity support 420 can be arranged around the main speaker 410 along the radial direction of the main speaker 410, so that the sound cavity support 420 and the main control circuit board 60 can also be arranged in a spaced manner along the axial direction of the main speaker 410.

[0064] In some embodiments, as shown in FIG. 6, the vibration direction of the main speaker 410 can be the thickness direction Z of the machine core shell 30, that is, the sound cavity support 420 and the main control circuit board 60 are stacked and spaced apart from each other in the thickness direction Z of the earphone 1 to form a spacing space 11. Because the current generated on the main control circuit board 60 will affect the main speaker 410, which will cause the sound quality effect of the main speaker 410 to be poor, therefore, by arranging the sound cavity support 420 and the main control circuit board 60 to have the spacing space 11 in the thickness direction Z of the earphone 1, the influence of the current on the main control circuit board 60 on the main speaker 410 can be reduced, thereby reducing the bottom noise of the main speaker 410, so as to ensure the sound quality effect of the main speaker 410.

[0065] In some embodiments, as shown in FIGS. 6 to 8, the key assembly 50 can be arranged on the outer circumferential surface of the sound cavity support 420 and can extend partially into the spacing space 11 in the thickness direction Z, so that in a vertical direction of the thickness direction Z, part of the key assembly 50 can overlap with the spacing space 11, and another part of the key assembly 50 can overlap with the sound cavity support 420, so that the key assembly 50 does not need to be provided with a mounting space in the thickness direction Z, in other words, the mounting space of the key assembly 50 can reuse the spacing space 11, thereby reducing the size of the machine core shell 30 in the thickness direction Z and improving the space utilization of the machine core shell 30.

[0066] In some embodiments, the axial direction of the sound cavity support 420 can be parallel or substantially parallel to the axial direction of the main speaker 410, and substantially parallel means that the spatial included angle between the two directions is between 0° and 5°. In this way, the structure of the sound cavity support 420, the main speaker 410 and the main control circuit board 60 can be more compact, and the space utilization of the machine core shell 30 can be further improved.

[0067] In some embodiments, as shown in FIG. 5, FIG. 7 and FIG. 8, the key assembly 50 can include a support plate 510 and a key body 520, the key body 520 is arranged on the side of the support plate 510 away from the acoustic cavity support 420. The key body 520 can be fixedly connected with the support plate 510, the support plate 510 can be supported on the outer circumferential surface of the acoustic cavity support 420, and the included angle between the main surface of the support plate 510 away from the acoustic cavity support 420 and the axial direction of the acoustic cavity support 420 is between 0° and 10°.

[0068] The main surface of the support plate 510 refers to the surface of the support plate 510 for arranging the key body 520. In some embodiments, the support plate 510 can be a flat plate, and the main surface of the support plate 510 is the side surface with the largest area. In some embodiments, the support plate 510 can be a support structure with a stepped surface, and at least part of the main surface is a plane. In some embodiments, the support plate 510 can be a support structure with an overall arc shape, and the main surface is a plane, and the support plate 510 extends in the direction of the plane where the main surface of the support plate 510 is located. In this way, the structure of the support plate 510 is more suitable for the shape of the acoustic cavity support 420, and the space utilization of the movement core shell 30 is increased.

[0069] The axial direction of the acoustic cavity support 420 can be indicated by arrow B in FIG. 6 and FIG. 8, and the plane where the main surface of the support plate 510 away from the acoustic cavity support 420 is located can be indicated by plane SE in FIG. 8. The included angle between the main surface of the support plate 510 away from the acoustic cavity support 420 and the axial direction of the acoustic cavity support 420 can be indicated by angle a in FIG. 8, where 0°≤a≤10°.

[0070] If the included angle between the main surface of the support plate 510 away from the acoustic cavity support 420 and the axial direction of the acoustic cavity support 420 is greater than 10°, the support plate 510 is more inclined relative to the axial direction of the acoustic cavity support 420, and the support plate 510 occupies a larger space, and the size of the movement core shell 30 in the width direction Y is increased. Moreover, the support plate 510 is too inclined relative to the acoustic cavity support 420, which is not conducive to the installation of the support plate 510 on the outer circumferential surface of the acoustic cavity support 420, and increases the installation difficulty of the support plate 510 on the acoustic cavity support 420.

[0071] Therefore, by setting the angle a to be between 0° and 10°, the main surface of the support plate 510 away from the acoustic cavity support 420 can be parallel or close to parallel to the axial direction of the acoustic cavity support 420, so that the support plate 510 can reduce the space occupied in the axial direction of the acoustic cavity support 420, thereby improving the space utilization, and facilitating the installation of the support plate 510 on the outer circumferential surface of the acoustic cavity support 420.

[0072] In some embodiments, the main surface of the support plate 510 facing away from the acoustic cavity support 420 can be perpendicular to the main surface of the main control circuit board 60 facing or facing away from the speaker assembly 40, or the angle between the main surface of the support plate 510 and the main surface of the main control circuit board 60 can be between 80° and 90°.

[0073] For example, the main surface of the main control circuit board 60 can be as shown by the plane SF in FIG. 8, and the angle between the main surface of the support plate 510 and the main surface of the main control circuit board 60 can be as shown by the angle β in FIG. 8, where 80°≤β≤90°. For example, the angle β can be 80°, 83°, 85°, 88°, or 90°, etc.

[0074] If the angle β is less than 80° or greater than 90°, it means that the support plate 510 is more inclined relative to the main control circuit board 60, and the support plate 510 will occupy more space in the direction parallel to the main surface of the main control circuit board 60, thereby increasing the size of the core housing 30 in this direction. When the angle β is equal to 90°, it means that the main surface of the support plate 510 is perpendicular to the main surface of the main control circuit board 60.

[0075] Therefore, by setting the angle between the main surface of the support plate 510 and the main surface of the main control circuit board 60 to be between 80° and 90°, the main surface of the support plate 510 can be perpendicular or close to perpendicular to the main surface of the main control circuit board 60. This arrangement allows the support plate 510 to reduce the occupied space in the direction parallel to the main surface of the main control circuit board 60, thereby improving the space utilization. In some embodiments, the support plate 510 and the main control circuit board 60 can both be plate-shaped designs, so the support plate 510 and the main control circuit board 60 can also be arranged to be perpendicular or close to perpendicular to each other.

[0076] In some embodiments, as shown in FIGS. 5 and 7, the outer circumferential surface of the acoustic cavity support 420 can be provided with a support surface 421, and the side of the support plate 510 facing the acoustic cavity support 420 can be supported on the support surface 421. The acoustic cavity support 420 can also be provided with a limiting mechanism 422 for limiting the support plate 510.

[0077] For example, the support surface 421 can facilitate better support of the support plate 510 on the acoustic cavity support 420. The limiting mechanism 422 can be provided on or around the support surface 421 to limit the support plate 510 and prevent the support plate 510 and the key assembly 50 from moving as much as possible, thereby improving the structural stability of the earphone 1 and avoiding the occurrence of key assembly 50 triggering malfunctions as much as possible.

[0078] In some embodiments, the adhesive medium can be a glue or double-sided tape or the like having a certain adhesive force.

[0079] Alternatively, in other embodiments, the main surface of the support plate 510 and the support surface 421 can be fixed to each other by welding, clamping or screwing or the like, which will not be specifically enumerated here.

[0080] In some embodiments, as shown in FIGS. 7 and 8, the limiting mechanism 422 can include a first limiting portion 4221 arranged on the side of the support surface 421 away from the main control circuit board 60. The first limiting portion 4221 can be arranged to limit the support plate 510 in a first direction. The first direction is parallel to the support surface 421 and away from the main control circuit board 60. The first direction C can be parallel to the thickness direction Z of the core housing 30, and the first limiting portion 4221 limits the side of the support plate 510 away from the main control circuit board 60 in a direction parallel to the thickness direction Z. Alternatively, the first direction C can be another direction inclined relative to the thickness direction Z, for example, a direction having a certain angle with the axis of the main loudspeaker 410, which can correspond to the angle a formed by the support plate 510 and the sound cavity support 420. As an example, the first direction can be as shown by arrow C in FIG. 7.

[0081] In some embodiments, the first limiting portion 4221 can be protruded relative to the support surface 421, and the first limiting portion 4221 and the main control circuit board 60 can be arranged spaced apart along the axis of the main loudspeaker 410, and the side of the support plate 510 away from the main control circuit board 60 can abut against the first limiting portion 4221.

[0082] In some embodiments, as shown in FIGS. 5 to 8, a pressing block 70 can be arranged between the main control circuit board 60 and the support plate 510, and the pressing block 70 is used to elastically abut against the first plate edge 511 of the support plate 510 toward the main control circuit board 60, so that the second plate edge 512 of the support plate 510 away from the main control circuit board 60 is supported on the first limiting portion 4221.

[0083] In some embodiments, the pressing block 70 can be a spring or a piece of foam or the like elastic element. The pressing block 70 can be fixedly connected to the main control circuit board 60 by means of bonding, screwing or sealing connection or the like. The first edge 511 of the support plate 510 is pressed against one end of the pressing block 70 away from the main control circuit board 60, so that the pressing block 70 limits the support plate 510 in the reverse direction of the first direction C. The provision of the elastic pressing block 70 facilitates flexible installation of the support plate 510 and the key assembly 50 on the sound cavity support 420, and reduces the assembly difficulty and the requirement for assembly accuracy of the support plate 510.

[0084] The pressing block 70 and the first limiting portion 4221 can be spaced apart along the first direction C, and the pressing block 70 and the first limiting portion 4221 jointly act on the support plate 510 to limit the support plate 510 in the first direction C and the reverse direction of the first direction C, so that the support plate 510 is not easy to slide away from the support surface 421 in the first direction C and the reverse direction of the first direction C, and further fix the key assembly 50 in the first direction C and the reverse direction of the first direction C, thereby improving the structural stability inside the movement housing 30 and avoiding poor touch as much as possible.

[0085] In some embodiments, as shown in FIG. 7, the limiting mechanism 422 can further include a second limiting portion 4222. The second limiting portion 4222 can be arranged on the periphery of the support surface 421 along a second direction. The second direction can be parallel to the support surface 421 and perpendicular to the first direction C. The second direction can be a direction perpendicular to the first direction C. The second limiting portion 4222 can be used to limit the support plate 510 in the second direction to prevent the support plate 510 from sliding away from the support surface 421 in the second direction. As an example, the second direction corresponds to an included angle α formed by the support plate 510 and the axial direction of the sound cavity support 420. As an example, if the included angle α is equal to 0°, the second direction is the length direction X of the movement housing 30. In other embodiments, the second direction D can also be other directions inclined relative to the width direction Y. As an example, the second direction can be as shown by the arrow D in FIG. 7. The second direction D is perpendicular to the first direction C.

[0086] As an example, the number of second limiting portions 4222 can be two, which are spaced apart along the second direction D, and the support plate 510 is located between the two second limiting portions 4222. As shown in FIG. 7, the two second limiting portions 4222 can be arranged on both sides of the support surface 421 along the second direction D and protrude relative to the support surface 421. The two ends of the support plate 510 along the second direction D abut against the two second limiting portions 4222 respectively, so that the two second limiting portions 4222 can limit the support plate 510 in the second direction D.

[0087] As an example, as shown in FIG. 5 and FIG. 7, the support plate 510 can include a main body portion 513 and a hook portion 514 connected to the main body portion 513. The main body portion 513 can be supported on the support surface 421. The key body 520 can be disposed on the main body portion 513. The hook portion 514 can be hung on the side of the second limiting portion 4222 away from the support surface 421. As an example, as shown in FIG. 6, the second limiting portion 4222 can be in a long strip shape and protrude from the support surface 421 relative to the support surface 421. In the second direction D, the second limiting portion 4222 contacts the main body portion 513 of the support plate 510 on one side and contacts the hook portion 514 on the other side, so that the second limiting portion 4222 can limit the support plate 510 in the second direction D by blocking the main body portion 513 and the hook portion 514. In this way, the support plate 510 can be easily mounted on the sound cavity support 420, reducing the assembly difficulty of the support plate 510 and the sound cavity support 420, and reducing the processing difficulty of the sound cavity support 420.

[0088] As an example, the number of second limiting portions 4222 can be two, which are arranged at intervals in the second direction D, and the support plate 510 is located between the two second limiting portions 4222. Meanwhile, the support plate 510 can include a main body portion 513 and a hook portion 514 connected to the main body portion 513. The main body portion 513 can be supported on the support surface 421. The key body 520 can be disposed on the main body portion 513. The hook portion 514 can be hung on the side of the second limiting portion 4222 away from the support surface 421. In this way, the sliding of the support plate 510 and the key assembly 50 in the second direction D can be further prevented.

[0089] In some embodiments, as shown in FIG. 7 and FIG. 8, the limiting mechanism 422 can include a third limiting portion 4223 arranged perpendicularly to and spaced apart from the support surface 421, the third limiting portion 4223 being located on the side of the support plate 510 away from the support surface 421, and the third limiting portion 4223 being used to limit the support plate 510 in a direction perpendicular to the support surface 421.

[0090] As an example, the third limiting portion 4223 can be connected to the first limiting portion 4221 and perpendicular to the first limiting portion 4221.

[0091] As an example, the third limiting portion 4223 can extend from the top end of the first limiting portion 4221 and in a direction away from the first direction C, the third limiting portion 4223 can form a mounting groove 4224 together with the first limiting portion 4221 and the support surface 421, and the first plate edge 511 of the support plate 510 is arranged in the mounting groove 4224. The third limiting portion 4223 and the support surface 421 limit the support plate 510 in a direction perpendicular to the support surface 421, so as to fix the support plate 510 on the support surface 421, so that the support plate 510 is not easy to slide off in a direction perpendicular to the support surface 421, thereby further stabilizing the support plate 510, improving the structural tightness between the sound cavity support 420 and the support plate 510, and at the same time ensuring the trigger sensitivity of the key assembly 50.

[0092] In some embodiments, as shown in FIG. 7, the second limiting portion 4222 can extend in a direction away from the first direction C to form a fixing column 4225, and the fixing column 4225 is spaced apart from the support surface 421 in a direction perpendicular to the support surface 421. The hook-shaped portion 514 of the support plate 510 is hung on the second limiting portion 4222. The main control circuit board 60 can be provided with a mounting hole 610 at a position corresponding to the fixing column 4225, and the fixing column 4225 can further extend into the mounting hole 610 to realize the mutual fixation of the main control circuit board 60 and the sound cavity support 420. In this way, the second limiting portion 4222 can be multiplexed, so that the structure of the sound cavity support 420, the main control circuit board 60 and the key assembly 50 is more compact, and the space utilization of the movement core shell 30 is improved.

[0093] By arranging the limiting mechanism 422 and the pressing block 70, the freedom of the support plate 510 in the first direction C, the second direction D and the direction perpendicular to the support surface 421 can be limited, so that the support plate 510 is not easy to loosen or disengage from the support surface 421 in the first direction C, the reverse direction of the first direction C, the second direction D and the direction perpendicular to the support surface 421. Therefore, the key assembly 50 is fixed on the support surface 421 by the limiting mechanism 422, thereby improving the structural tightness and firmness of the movement core shell 30, and at the same time avoiding the situation that the key assembly 50 is triggered badly due to the shaking of the support plate 510 as much as possible.

[0094] In some embodiments, as shown in FIGS. 4-8, the key hole 380 can be formed on the core housing 30. The position of the key hole 380 can correspond to the position of the key assembly 50. The key portion 310 can include a cantilever beam 311, a key cap 312, and a soft filling body 313. The cantilever beam 311, the soft filling body 313, and the key cap 312 can be disposed in the key hole 380. The fixed end of the cantilever beam 311 can be located at the hole edge of the key hole 380 and integrally formed with the core housing 30. The free end of the cantilever beam 311 facing away from the inside of the core housing 30 can correspond to the key body 520 in the key assembly 50. The free end of the cantilever beam 311 connected to the key cap 312 faces the inside of the core housing 30. The key cap 312 can be exposed to the outer surface of the core housing 30 and used for pressing by the user. When the key cap 312 is pressed by the user, the key cap 312 can further push the free end of the cantilever beam 311 to move towards the inside of the core housing 30 to trigger the key body 520, thereby transmitting a corresponding control signal to the main control circuit board 60. The soft filling body 313 can be used to fill the gap between the cantilever beam 311 and the key cap 312 and the hole edge of the key hole 380.

[0095] In some embodiments, as shown in FIG. 8, the free end of the cantilever beam 311 connected to the key cap 312 is provided with a protruding portion 3111. The position corresponding to the protruding portion 3111 of the key cap 312 can be provided with a groove 3112. The protruding portion 3111 is embedded in the groove 3112. The cantilever beam 311 and the groove 3112 cooperate to fix and limit the key cap 312. Of course, in other embodiments, the cantilever beam 311 and the key cap 312 can be connected by other means such as bonding or clamping, which are not limited in this embodiment.

[0096] In some embodiments, the soft filling body 313 can be a silicone or rubber element with certain elasticity. Specifically, the soft filling body 313 can be fixed to the side of the cantilever beam 311 facing away from the inside of the core housing 30. The arrangement of the soft filling body 313 can prevent external liquids, dust, metal particles and other impurities from entering the core housing 30 through the key hole 380 to damage the elements inside the core housing 30, thereby further improving the stability and safety of the inside of the core housing 30.

[0097] In some embodiments, as shown in FIGS. 9-11, the earphone 1 can further include a magnet assembly 80 disposed inside the core housing 30. The magnet assembly 80 has a certain magnetic attraction capability, so that the earphone 1 can be attracted to the corresponding charging box or other charging device.

[0098] In some embodiments, the polarization direction of the magnet assembly 80 can be the same as the polarization direction of the main magnet 413 of the main speaker 410. The main magnet 413 is disposed inside the main speaker 410. The main magnet 413 refers to a magnet element that mainly provides a magnetic field in the main speaker 410, and the position of the main magnet 413 can be referred to FIG. 6 and FIG. 9.

[0099] By setting the polarization direction of the magnet assembly 80 to be the same as the polarization direction of the main magnet 413 of the main speaker 410, the magnet assembly 80 and the main magnet 413 can together play a role in attracting the earphone 1 to the corresponding charging box or other charging device, enhancing the overall magnetic attraction of the earphone 1, and ensuring that the earphone 1 can be stably attracted to the charging box or other charging device, thereby ensuring the charging effect.

[0100] In some embodiments, as shown in FIG. 9 to FIG. 11, the speaker assembly 40 can further include an auxiliary speaker 430, and the magnet assembly 80 and the auxiliary speaker 430 can be disposed on the side of the main speaker 410 close to the user's pinna 103 in the wearing state along the vibration direction of the main speaker 410. In other words, in the thickness direction Z, the magnet assembly 80 and the auxiliary speaker 430 are respectively stacked with the main speaker 410.

[0101] In some embodiments, in combination with FIG. 9, FIG. 10 and FIG. 11, the magnet assembly 80 and the auxiliary speaker 430 can at least partially coincide when viewed along the length direction X of the core shell 30. In other words, the projection of the magnet assembly 80 on a reference plane perpendicular to the length direction X at least partially coincides with the projection of the auxiliary speaker 430 on the reference plane perpendicular to the length direction X. By such arrangement, the space utilization of the core shell 30 can be improved, and the size of the core shell 30 in the thickness direction Z can be ensured not to be too large.

[0102] In some embodiments, the ratio between the projection area of the magnet assembly 80 along the thickness direction Z of the core shell 30 and the projection area of the main magnet 413 of the main speaker 410 along the thickness direction Z can be between 0.1 and 0.2.

[0103] If the ratio between the projected area of the magnet assembly 80 along the thickness direction Z of the core shell 30 and the projected area of the main magnet 413 of the main speaker 410 along the thickness direction Z is less than 0.1, it means that the area of the magnet assembly 80 is small and cannot provide sufficient magnetic attraction to enable the earphone 1 to be stably adsorbed in the charging box or other charging device. If the ratio between the projected area of the magnet assembly 80 along the thickness direction Z of the core shell 30 and the projected area of the main magnet 413 of the main speaker 410 along the thickness direction Z is greater than 0.2, it means that the magnet assembly 80 is large, and at this time, the magnetic field formed by the magnet assembly 80 is also relatively strong. Since the polarization direction of the magnet assembly 80 is the same as that of the main magnet 413, the magnetic field of the magnet assembly 80 is too strong and will have a greater impact on the magnetic field of the main magnet 413, affecting the sound quality effect of the main speaker 410.

[0104] Therefore, by setting the ratio between the projected area of the magnet assembly 80 along the thickness direction Z of the core shell 30 and the projected area of the main magnet 413 of the main speaker 410 along the thickness direction Z to be between 0.1 and 0.2, the magnet assembly 80 can have sufficient magnetic attraction, which can enhance the magnetic attraction of the earphone 1 to facilitate the earphone 1 to be adsorbed in the charging box or other charging device. Moreover, in the case where the polarization direction of the magnet assembly 80 is the same as that of the main magnet 413, the magnet assembly 80 will not have a greater impact on the magnetic field of the main magnet 413, thereby ensuring the sound quality effect of the main speaker 410.

[0105] For example, the ratio between the projected area of the magnet assembly 80 along the thickness direction Z of the core shell 30 and the projected area of the main magnet 413 of the main speaker 410 along the thickness direction Z can be 0.1, 0.13, 0.16, 0.18, or 0.2, etc.

[0106] In some embodiments, as shown in FIGS. 10 and 11, the vibration direction and the length direction X of the main speaker 410 can define a symmetry plane SG. The symmetry plane SG of the main speaker 410 is also the symmetry plane SG of the main magnet 413.

[0107] In some embodiments, as shown in FIGS. 10 and 11, the magnet assembly 80 can include two magnets 810, which are located on the two sides of the symmetry plane SG and are symmetrically arranged relative to the symmetry plane SG. The magnet 810 is an element with magnetic attraction, for example, the magnet 810 can be an artificial magnet or a natural magnet, etc.

[0108] Specifically, the two magnets 810 are symmetrically arranged along the symmetry plane SG, which can balance the magnetic field of the main magnet 413, reduce the total magnetic field deviation caused by a single magnet 810, cause the magnetic field of the main magnet 413 to be nonlinear, and further cause the main speaker 410 to be distorted, thereby affecting the sound quality effect of the earphone 1.

[0109] In summary, the earphone 1 provided by the application is provided with the main loudspeaker 410, the sound cavity support 420 and the button assembly 50. The sound cavity support 420 can cooperate with the main loudspeaker 410 to form the acoustic back cavity 401, so that the pickup effect of the main loudspeaker 410 can be ensured. Meanwhile, the sound cavity support 420 can support the button assembly 50, so that the function of the sound cavity support 420 can be multiplexed. In addition, it is not necessary to additionally provide a supporting assembly to support and fix the button assembly 50, so that the space inside the earphone 1 can be saved, the size of the earphone 1 can be reduced, and the space utilization rate can be improved.

[0110] The above description is only an embodiment of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process transformation obtained by using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the application.

Claims

1. An earphone, characterized by comprising: The earphone comprises a core shell, a speaker assembly and a button assembly arranged in the core shell, the speaker assembly comprises a main speaker and an acoustic cavity support, the acoustic cavity support and the main speaker cooperate to form an acoustic back cavity, the button assembly is supported on the acoustic cavity support, and the core shell is provided with a button part for pressing to trigger the button assembly.

2. The earphone of claim 1, wherein, The earphone further comprises a main control circuit board, the main control circuit board is arranged in layers along the vibration direction of the main speaker and the speaker assembly, and the main surface of the main control circuit board is arranged to face or face away from the speaker assembly, the acoustic cavity support is arranged around the main speaker, the button assembly is supported on the outer peripheral surface of the acoustic cavity support and is electrically connected to the main control circuit board.

3. The earphone of claim 2, wherein The button assembly comprises a support plate and a button body arranged on the side of the support plate away from the acoustic cavity support, the button body is fixedly connected with the support plate, the support plate is fixedly supported on the outer peripheral surface of the acoustic cavity support, and the included angle between the main surface of the support plate away from the acoustic cavity support and the axial direction of the acoustic cavity support is 0-10°.

4. The earphone of claim 3, wherein The main surface of the support plate away from the acoustic cavity support is arranged perpendicularly to the main surface of the main control circuit board facing or facing away from the speaker assembly, or the included angle between the main surface of the support plate and the main surface of the main control circuit board is 80-90°.

5. The earphone according to claim 3 or 4, characterized in that, The outer peripheral surface of the acoustic cavity support is provided with a support surface, and the side of the support plate facing the acoustic cavity support is supported on the support surface, and the acoustic cavity support is further provided with a limiting mechanism for limiting the support plate.

6. The earphone of claim 5, wherein, The limiting mechanism comprises a first limiting part arranged on the side of the support surface away from the main control circuit board, and the first limiting part is arranged to limit the support plate in a first direction, wherein the first direction is parallel to the support surface and away from the main control circuit board.

7. The earphone of claim 6, wherein A pressing block is arranged between the main control circuit board and the support plate, the pressing block is used for elastically abutting a first plate edge of the support plate on the side facing the main control circuit board, so that a second plate edge of the support plate on the side away from the main control circuit board is supported on the first limiting part.

8. The earphone according to claim 6 or 7, characterized in that, The limiting mechanism comprises a second limiting part, the second limiting part is arranged on the periphery of the support surface in a second direction, the second direction is parallel to the support surface and perpendicular to the first direction, and the second limiting part is used for limiting the support plate in the second direction.

9. The earphone of claim 8, wherein, The number of the second limiting parts is two, the support plate is located between the two second limiting parts, or The support plate comprises a main body part and a hook-shaped part connected with the main body part, the main body part is supported on the support surface, and the hook-shaped part is hung on the side of the second limiting part away from the support surface.

10. The earphone according to claim 8 or 9, characterized in that, The limiting mechanism comprises a third limiting part arranged perpendicularly to the support surface and spaced apart from the support surface, the third limiting part is located on the side of the support surface supporting the support plate, and the third limiting part is used for limiting the support plate in the vertical direction of the support surface.

11. The earphone according to any one of claims 1-10, characterized in that, The key hole is formed on the core shell, the key part includes a cantilever beam, a key cap and a soft filling body, the cantilever beam, the soft filling body and the key cap are arranged in the key hole, the cantilever beam is integrally formed with the core shell, the fixed end of the cantilever beam is located at the hole edge of the key hole, the key cap is arranged at the free end of the cantilever beam, and the soft filling body is used for filling the gap between the cantilever beam, the key cap and the hole edge of the key hole.

12. The earphone of claim 11, wherein, The earphone further comprises an ear hook, the core shell has a connecting end connected with the ear hook and a free end away from the connecting end, in the wearing state, the ear hook is hung between the auricle and the head of the user, the core shell is located on the front side of the auricle, the free end at least partially covers or extends into the concha cavity, the core shell has a length direction, a thickness direction and a width direction which are perpendicular to each other, the length direction is the interval direction of the connecting end and the free end, the thickness direction is the direction towards or away from the auricle in the wearing state, the core shell comprises a first side wall and a second side wall arranged along the width direction, and the key part is arranged on the first side wall or the second side wall.

13. The earphone according to any one of claims 1-12, wherein, The earphone further comprises an ear hook and a magnet assembly, the core shell has a connecting end connected with the ear hook and a free end away from the connecting end, the polarization direction of the magnet assembly is the same as that of the main magnet of the main loudspeaker. The loudspeaker assembly further comprises an auxiliary loudspeaker, the magnet assembly and the auxiliary loudspeaker are arranged on the side of the main loudspeaker close to the auricle of the user in the wearing state along the vibration direction of the main loudspeaker, and the magnet assembly and the auxiliary loudspeaker at least partially overlap when viewed along the length direction of the core shell, the length direction being the interval direction of the connecting end and the free end.

14. The earphone of claim 13, wherein, The ratio between the projection area of the magnet assembly along the thickness direction of the core shell and the projection area of the main magnet of the main loudspeaker along the thickness direction is between 0.1 and 0.2, the thickness direction of the core shell is the direction towards or away from the auricle of the user in the wearing state, and the thickness direction and the length direction are perpendicular to each other.

15. The earphone according to claim 13 or 14, characterized in that, The vibration direction of the main loudspeaker and the length direction define a symmetry plane, the magnet assembly comprises two magnets, and the two magnets are located on two sides of the symmetry plane and are symmetrically arranged relative to the symmetry plane.

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