Loudspeaker assembly and earphone

Abstract

The invention discloses a loudspeaker assembly and an earphone, and the earphone comprises a housing assembly, a bone conduction movement module and an air conduction movement module, and is provided with an accommodation space. The bone conduction machine core module is arranged in the containing space and generates vibration in the first vibration direction. The air conduction machine core module is arranged in the containing space, and the air conduction machine core module and the bone conduction machine core module are arranged in the first vibration direction and are opposite to each other. Through the mode, the influence of the air conduction movement module on the vibration effect of the bone conduction movement module can be reduced, the volume is improved, and the bone conduction effect of the loudspeaker assembly is improved, so that the sound quality effect of the loudspeaker assembly is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a speaker assembly and an earphone. Background Art

[0002] Headphones are an indispensable social and entertainment tool in people's daily lives. They are now widely used in people's daily lives, and people's requirements for electronic devices are getting higher and higher. Currently, headphones that combine air conduction and bone conduction technology can provide better sound quality and user experience, so headphones that combine air conduction and bone conduction are becoming more and more popular.

[0003] Since bone conduction technology requires the earphone to vibrate and transmit vibration signals to the human body, when the bone conduction speaker vibrates on its axis, it will drive the shell assembly to vibrate, and the air conduction speaker and the shell assembly will become vibration loads. The air conduction speaker is usually set beside the axis of the bone conduction speaker. In this case, the mass of the air conduction speaker will offset the vibration of the bone conduction speaker, causing the speaker to generate two torques in different directions, weakening the vibration of the bone conduction speaker on the axis, reducing the volume of the bone conduction component of the earphone, thereby reducing the volume of the earphone and affecting the sound quality of the earphone. Summary of the invention

[0004] The present application provides a speaker assembly and headphones, which can reduce the influence of the air conduction movement module on the vibration effect of the bone conduction movement module, increase the volume, and improve the bone conduction effect of the speaker assembly, thereby improving the sound quality effect of the speaker assembly.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is to provide a speaker assembly, which includes a shell assembly, a bone conduction movement module and an air conduction movement module.

[0006] The housing component is provided with a receiving space. The bone conduction core module is arranged in the receiving space and vibrates in a first vibration direction. The air conduction core module is arranged in the receiving space and is arranged along the first vibration direction with the bone conduction core module and is opposite to each other.

[0007] In some embodiments, projections of the bone conduction core module and the air conduction core module on a reference plane perpendicular to the first vibration direction have an overlapping area.

[0008] In some embodiments, the ratio between the overlapped area and the projected area of ​​the air conduction core module on the reference plane is greater than 20%, or greater than 40%, or greater than 60%. And / or,

[0009] The ratio between the overlapping area and the projected area of ​​the bone conduction core module on the reference plane is greater than 20%, or greater than 40, or greater than 60%.

[0010] In some embodiments, the air conduction core module is stacked on the bone conduction core module along the first vibration direction.

[0011] In some embodiments, the air conduction core module is fixedly connected to the bone conduction core module.

[0012] In some embodiments, an elastic buffer is provided between the air conduction core module and the bone conduction core module.

[0013] In some embodiments, the air conduction core module is spaced apart from the bone conduction core module in the first vibration direction.

[0014] In some embodiments, the housing assembly is provided with a partition wall, and the accommodating space includes a first accommodating cavity and a second accommodating cavity separated by the partition wall. The bone conduction core module is provided in the first accommodating cavity, and the air conduction core module is provided in the second accommodating cavity.

[0015] In some embodiments, the shell assembly includes a first shell, a second shell and a third shell, wherein the second shell is engaged with the first shell and cooperates with each other to form a first accommodating cavity, and the third shell is engaged with the first shell and the second shell respectively and cooperates with the first shell to form a second accommodating cavity.

[0016] In some embodiments, the bone conduction core module has a first central axis extending along the first vibration direction; the air conduction core module vibrates in the second vibration direction and has a second central axis extending along the second vibration direction. The angle between the first central axis and the second central axis is 70° to 100°. The third shell is located on the side of the first shell away from the second shell in the first vibration direction; the cross-sectional dimension of the third shell perpendicular to the first vibration direction gradually decreases or decreases in a step-like manner in the direction away from the second shell.

[0017] In some embodiments, the second shell has a contact area that contacts the user's face in the worn state; and the joint between the first shell and the second shell is located outside the contact area.

[0018] In some embodiments, the air conduction movement module generates vibration in the second vibration direction, and the shell assembly is provided with a sound outlet hole and a pressure relief hole connected to the second accommodating cavity, and the sound outlet hole and the pressure relief hole are respectively arranged on two side walls of the shell assembly spaced from each other in the second vibration direction.

[0019] In some embodiments, the shape and size of the first accommodating cavity match the shape and size of the bone conduction core module.

[0020] In some embodiments, at least one of the air conduction core module and the bone conduction core module is fixed relative to the housing assembly.

[0021] In some embodiments, the bone conduction core module is configured as a closed structure, and the interior of the bone conduction core module and the accommodating space are isolated from each other.

[0022] In some embodiments, the bone conduction core module includes a cylindrical cover, a drive assembly, and two sealing plates; the cylindrical cover is fixedly connected to the housing assembly, the drive assembly is disposed in the cylindrical cover, and the drive assembly is used to drive the cylindrical cover to vibrate, thereby driving the housing assembly to vibrate. The two sealing plates are respectively disposed at both ends of the cylindrical cover and block the cylindrical cover to form a closed structure.

[0023] In some embodiments, the bone conduction movement module includes a vibration transmission piece, the driving assembly includes a voice coil assembly and a magnet assembly, the voice coil assembly is sleeved on the magnet assembly, the vibration transmission piece is fixedly connected to the cylindrical cover and the magnet assembly, and the voice coil assembly is fixedly connected to the cylindrical cover.

[0024] In some embodiments, the inner space of the cylindrical cover is filled with magnetic fluid, and the magnetic fluid occupies at least a portion of the inner space of the cylindrical cover.

[0025] In some embodiments, the distance between the projection of the center of mass of the bone conduction core module on a reference plane perpendicular to the first vibration direction and the projection of the center of mass of the air conduction core module on the reference plane is less than 0.5 mm. Alternatively, the bone conduction core module has a first central axis extending along the first vibration direction. The distance between the center of mass of the air conduction core module and the first central axis is less than or equal to 0.5 mm.

[0026] In some embodiments, the distance is 0 to 0.4 mm, or 0 to 0.2 mm.

[0027] In some embodiments, the air conduction core module vibrates in a second vibration direction; the angle between the first vibration direction and the second vibration direction is 70° to 100°, or 80° to 90°.

[0028] In some embodiments, the housing assembly is provided with a first side surface, a second side surface, and a vibration transmission surface, the first side surface, the second side surface, and the vibration transmission surface are not coplanar with each other, the first side surface and the second side surface are spaced apart in a direction perpendicular to the first vibration direction, the housing assembly is provided with a sound outlet hole penetrating the first side surface and communicating with the accommodation space, and a pressure relief hole penetrating the second side surface and communicating with the accommodation space. The vibration transmission surface is perpendicular to the first vibration direction, and the bone conduction core module transmits vibration outward through the vibration transmission surface.

[0029] In order to solve the above technical problems, another solution adopted by the present application is to provide a speaker assembly, which includes a housing assembly, a bone conduction core module and an air conduction core module. The housing assembly is provided with a housing space. The bone conduction core module is arranged in the housing space and vibrates in a first vibration direction. The air conduction core module is arranged in the housing space.

[0030] The air conduction core module and the bone conduction core module are arranged along the first vibration direction, and the projections of the bone conduction core module and the air conduction core module on a reference plane perpendicular to the first vibration direction have an overlapping area. The ratio between the overlapping area and the projection area of ​​the air conduction core module or the bone conduction core module on the reference plane is greater than 20%, or greater than 40, or greater than 60%.

[0031] In order to solve the above technical problem, another solution adopted by the present application is to provide an earphone, including the speaker assembly as described above.

[0032] The beneficial effect of the present application is as follows: by arranging the air conduction movement module and the bone conduction movement module in the first vibration direction of the bone conduction movement module and arranging the air conduction movement module and the bone conduction movement module along the first vibration direction and opposite to each other, the mass of the air conduction movement module can be more concentrated on the axis of the bone conduction movement module, so that the bias effect of the air conduction movement module on the vibration of the bone conduction movement module is weakened, so that the bone conduction movement module can better drive the air conduction movement module to move when vibrating, reducing the influence of the mass of the air conduction movement module on the vibration effect of the bone conduction movement module, and being able to increase the volume, thereby improving the bone conduction effect of the speaker assembly, so as to improve the sound quality effect of the speaker assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall assembly three-dimensional structure of an earphone embodiment of the present application;

[0034] Figure 2 It is a schematic diagram of the three-dimensional structure of a speaker assembly embodiment and a partial ear hook of the present application;

[0035] Figure 3 is Figure 2 An exploded schematic diagram of the structure of the loudspeaker assembly embodiment shown;

[0036] Figure 4 yes Figure 2 The schematic cross-sectional structure diagram of the loudspeaker assembly embodiment shown is along the AA section line;

[0037] Figure 5 is Figure 2 Another cross-sectional structural schematic diagram of the loudspeaker assembly embodiment along the AA section line;

[0038] Figure 6 yes Figure 2 Another three-dimensional structural schematic diagram of the loudspeaker assembly embodiment shown;

[0039] Figure 7 yes Figure 2 A schematic diagram showing the positional relationship between the first central axis and the second central axis in the loudspeaker assembly embodiment;

[0040] Figure 8 is a schematic diagram of an exploded structure of the bone conduction speaker embodiment shown in FIG3 ;

[0041] Fig. 9 yes Figure 8 A schematic cross-sectional structure diagram of the bone conduction speaker embodiment along the BB section line;

[0042] Fig.10 is a schematic diagram of the three-dimensional structure of the air conduction speaker embodiment shown in FIG3;

[0043] Fig.11 yes Fig.10 An exploded schematic diagram of the structure of the air conduction speaker embodiment shown;

[0044] Fig.12 yes Figure 2 A schematic exploded view of the structure of another loudspeaker assembly embodiment of the present application is shown;

[0045] Fig.13 yes Fig.12 A schematic cross-sectional structure diagram of an implementation of the loudspeaker assembly embodiment along the AA section line;

[0046] Fig.14 yes Fig.12 A schematic cross-sectional structure diagram of another implementation of the loudspeaker assembly embodiment along the AA cutting line;

[0047] Fig.15 yes Fig.12 A schematic cross-sectional structure diagram of another implementation of the loudspeaker assembly embodiment along the AA cutting line;

[0048] Fig.16 yes Figure 8 A schematic diagram of the structure of the vibration transmission piece in the bone conduction speaker embodiment shown;

[0049] Fig.17 is a schematic structural explosion diagram of another loudspeaker assembly embodiment of the present application;

[0050] Fig.18 yes Fig.17 A schematic cross-sectional structure diagram of an implementation of the loudspeaker assembly embodiment along the CC cutting line;

[0051] Fig.19 yes Fig.17 A schematic cross-sectional structure diagram of another implementation of the loudspeaker assembly embodiment along the CC cutting line;

[0052] Fig. 20 yes Fig.17 A schematic cross-sectional structure diagram of another implementation of the loudspeaker assembly embodiment along the CC cutting line;

[0053] Fig.21 yes Fig.17 Another schematic cross-sectional view of the loudspeaker assembly embodiment along the CC cutting line is shown. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, 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 creative work are within the scope of protection of this application.

[0055] like Figure 1 As shown, the earphone 1 may include a speaker assembly 10 , an ear hook 20 and a back hook 30 .

[0056] The speaker assembly 10 may be a movement module of the earphone 1 including a speaker and a corresponding assembly housing, circuit components, etc. The number of speaker assemblies 10 may be two. The two speaker assemblies 10 are respectively used to transmit vibration and / or sound to the left ear and the right ear of the user. The two speaker assemblies 10 may be the same or different. For example, one speaker assembly 10 may be provided with a microphone, while the other speaker assembly 10 may not be provided with a microphone. Of course, both speaker assemblies 10 may be provided with a microphone. For another example, one speaker assembly 10 may be provided with a button and a corresponding circuit board, while the other speaker assembly 10 may not be provided with the button and the corresponding circuit board. The speakers included in the two speaker assemblies 10 may be the same or different. The speaker assembly 10 described later in this article may be considered to be described in detail by taking one of the two speaker assemblies 10 as an example.

[0057] The number of ear hooks 20 can also be two, and the two ear hooks 20 can be hung on the left ear and the right ear of the user respectively, so that the speaker assembly 10 can fit the face of the user. For example, one ear hook 20 can be provided with a battery, and the other ear hook 20 can be provided with a control circuit, etc. One end of the ear hook 20 is connected to the speaker assembly 10, and the other end of the ear hook 20 is connected to the back hook 30. The ear hook 20 can also be called a wearing assembly 20.

[0058] The back hook 30 can be connected to the two ear hooks 20. The back hook 30 can be used to wrap around the back of the user's neck or the back of the head, and can provide a clamping force, so that the two speaker assemblies 10 are clamped on both sides of the user's face and the ear hooks 20 are more firmly hung on the user's ears. Of course, the earphone 1 may not include the back hook 30, and the speaker assembly 10 is worn on the user's ears through the ear hooks 20.

[0059] The following content mainly describes the structure of the speaker assembly 10 and other parts of the earphone 1 by way of example.

[0060] like Figures 2 to 4 As shown, the speaker assembly 10 includes a housing assembly 100, a bone conduction speaker 200, and an air conduction speaker 300. The housing assembly 100 may be provided with an accommodation space 110. The air conduction speaker 300 may be disposed in the accommodation space 110, and the bone conduction speaker 200 may be disposed in the accommodation space 110.

[0061] The housing space 110 is formed in the housing assembly 100, and the housing space 100 accommodates the air conduction speaker 300 and the bone conduction speaker 200. The housing space 100 can be a large integral space, or can be divided into two or more connected or unconnected small spaces. For example, the housing assembly 100 can be provided with a first housing cavity 111 and a second housing cavity 112.

[0062] In some embodiments, the housing assembly 100 may also be provided with a connecting hole 113 connecting the first accommodating chamber 111 and the second accommodating chamber 112. In this way, at least the first accommodating chamber 111, the second accommodating chamber 112 and the connecting hole 113 may together form the accommodating space 110. The bone conduction speaker 200 may be disposed in the first accommodating chamber 111 and the connecting hole 113 may be blocked so that the first accommodating chamber 111 and the second accommodating chamber 112 are isolated from each other. The air conduction speaker 300 may be disposed in the second accommodating chamber 112. In other embodiments, the connecting hole 113 may not be provided between the first accommodating chamber 111 and the second accommodating chamber 112, and the housing assembly 100 itself may isolate the two from each other and not connect them.

[0063] Among them, the air conduction speaker 300 is used to conduct sound to the user's ear canal through the principle of air vibration, and the bone conduction speaker 200 is used to conduct sound to the user through bone conduction vibration. Since the second accommodating cavity 112 where the air conduction speaker 300 is located needs to be connected to the outside world in order to conduct sound waves through the air, and the bone conduction speaker 200 requires a highly airtight environment to ensure the effect of bone conduction, the bone conduction speaker 200 and the air conduction speaker 300 are independently arranged in two different cavities in the accommodating space 110, which can effectively reduce the mutual interference between the bone conduction speaker 200 and the air conduction speaker 300, thereby effectively improving the sound quality of the earphone 1. The airtightness can be understood as the airtightness of the cavity space.

[0064] On the basis of the above, a connecting hole 113 is provided between the first accommodating chamber 111 and the second accommodating chamber 112, and the connecting hole 113 is blocked by the bone conduction speaker 200 on one side of the connecting hole 113, so that the use space of the first accommodating chamber 111 can be expanded while ensuring the strong airtightness of the second accommodating chamber 112, which can effectively improve the convenience of assembling the air conduction speaker 300 and the reliability of the structural setting, and can simply and effectively expand the volume of the sound cavity space formed by the air conduction speaker 300 in the second accommodating chamber 112, which can improve the sound effect of the air conduction speaker 300 and improve the sound quality of the air conduction speaker 300. In other words, while keeping the volume of the sound cavity space unchanged, the air conduction speaker 300 can be arranged closer to one side of the bone conduction speaker 200, which can reduce the size of the speaker assembly 10 and achieve compactness of the overall size.

[0065] In some embodiments, as shown in Figures 3 to Figure 4 As shown, the housing assembly 100 may be provided with a sound outlet hole 114 and a pressure relief hole 115 communicating with the second accommodating cavity 112 and the external environment, and the sound outlet hole 114 and the pressure relief hole 115 may be arranged at intervals.

[0066] The air conduction speaker 300 is arranged in the second accommodating chamber 112. A sound cavity space (external acoustic sound cavity) of the air conduction speaker 300 can be formed in the second accommodating chamber 112, and the connecting hole 113 can be provided to increase the volume of the acoustic sound cavity, which can improve the acoustic effect. The sound outlet hole 114 can be used to guide the sound waves generated by the air conduction speaker 300 out of the speaker assembly 10 to the outside of the user's ear canal. The pressure relief hole 115 is provided to connect the second accommodating chamber 112 and the external environment, so that air can flow freely in the second accommodating chamber 112 and the air conduction speaker 300, and prevent the gas in the second accommodating chamber 112 from damping the vibration of the air conduction speaker 300, thereby affecting the sound quality of the air conduction speaker 300. Therefore, the pressure relief hole 115 is provided to allow the earphone 1 to have a better sound quality effect.

[0067] By spacing the sound outlet hole 114 and the pressure relief hole 115 apart, the mutual interference between the sound outlet hole 114 and the pressure relief hole 115 can be reduced, so that the air pressure released from the pressure relief hole 115 is not likely to affect the sound waves transmitted in the sound outlet hole 114, thereby improving the sound quality of the earphone 1.

[0068] Optionally, as shown in Figures 3 to Figure 4As shown, the air conduction speaker 300 can be configured to separate the second accommodating cavity 112 into a first sub-cavity 1121 and a second sub-cavity 1122 that are isolated from each other. The first sub-cavity 1121 and the second sub-cavity 1122 are not connected to each other. The sound outlet hole 114 can be connected to the first sub-cavity 1121, and the pressure relief hole 115 can be connected to the second sub-cavity 1122. Further, the connecting hole 113 can be connected to the second sub-cavity 1122. In this case, the volume of the second sub-cavity 1122 can be increased due to the presence of the connecting hole 113, thereby enhancing the sound quality.

[0069] Specifically, when the earphone 1 is working, part of the sound waves generated by the air conduction speaker 300 using the air vibration principle can be transmitted out of the speaker assembly 10 through the first sub-cavity 1121 and the sound outlet 114 in sequence. The pressure relief hole 115 can connect the second sub-cavity 1122 with the external environment, so that air can flow freely between the external environment and the second sub-cavity 1122. If the second sub-cavity 1122 is closed, then when the air conduction speaker 300 is working, the air in the second sub-cavity 1122 produces air damping on the vibration of the air conduction speaker 300, which in turn affects the sound quality of the air conduction speaker 300. In this way, the air pressure balance between the second sub-cavity 1122 and the external environment can be maintained through the pressure relief hole 115, thereby reducing the impact on the sound generated by the air conduction speaker 300, and further reducing the impact on the sound quality of the earphone 1.

[0070] Optionally, the sound outlet hole 114 and the pressure relief hole 115 can be respectively connected to the opposite side surfaces of the shell assembly 100, so that the distance between the sound outlet hole 114 and the pressure relief hole 115 is farther, thereby reducing the probability of sound waves induced by the sound outlet hole 114 and the pressure relief hole 115 interfering with each other in the near field, thereby ensuring the output of air conduction sound of the air conduction speaker 300.

[0071] In some embodiments, the number of the pressure relief holes 115 may be one or more, and the multiple pressure relief holes 115 are arranged at intervals. The multiple pressure relief holes 115 can enhance the pressure relief effect and allow the earphone 1 to have a better sound quality. Optionally, the positions of at least two pressure relief holes 115 on the housing assembly 100 that are connected to the external environment can be located on different sides of the housing assembly 100, thereby reducing the probability of interference enhancement of the pressure relief holes 115.

[0072] In some embodiments, as shown in FIGS. 3 to 5 , the housing assembly 100 may include a first housing 120, a second housing 130, and a third housing 140. The second housing 130 and the first housing 120 may cooperate to form a first accommodating cavity 111 (in Figure 4 The first housing 120 is schematically marked in the figure, but it does not mean that the first housing cavity 111 is only the portion shown on the first housing 120). The third housing 140 and the first housing 120 can cooperate to form the second housing cavity 112 (in Figure 4The second housing 112 is schematically marked on the first housing 120, but it does not mean that the second housing chamber 112 is only the portion shown on the first housing). The connecting hole 113 can be opened in the first housing 120. The third housing 140 can be provided with a sound outlet hole 114 connecting the second housing chamber 112 and the external environment, and the first housing 120 can be provided with a pressure relief hole 115 connecting the second housing chamber 112 and the external environment. Optionally, the pressure relief hole 115 can be arranged on the side of the first housing 120 away from the third housing 140, so that the distance between the pressure relief hole 115 and the sound outlet hole 114 is relatively far.

[0073] By setting the first shell 120, the second shell 130 and the third shell 140 to abut against each other to form the first accommodating chamber 111 and the second accommodating chamber 112, the assembly and disassembly of the speaker assembly 10 can be facilitated, and the tightness and stability of the structure of the speaker assembly 10 can be improved. The sound outlet 114 is set in the third shell 140, and the pressure relief hole 115 is set in the first shell 120, so that the distance between the sound outlet 114 and the pressure relief hole 115 can be larger, which can reduce the mutual interference between the sound waves transmitted by the sound outlet 114 and the pressure relief hole 115, and reduce the probability of the sound waves transmitted by the sound outlet 114 and the pressure relief hole 115 interfering and destructing in the near field, so that the earphone 1 can have a better sound quality effect.

[0074] like Figure 2 As shown, the earphone may include a wearing component 20 and a speaker component 10 as described above. The wearing component 20 may also be referred to as an ear hook 20. Specifically, the wearing component 20 may be connected to the first shell 120. Connecting the wearing component 20 to the first shell 120 may make the connection between the wearing component 20 and the speaker component 10 tighter, and it is not easy to detach from the speaker component 10 during use. Optionally, the positions of the first shell 120 and the wearing component 20 correspond to the first accommodating cavity 111. Specifically, when the wearing component 20 is assembled in the first shell 120, it may point to the first accommodating cavity 111, so that the first shell 120 is closer to the first accommodating cavity 111 than the swinging position of the wearing component 20. When the bone conduction speaker 200 vibrates the first shell 120, the first shell may swing more significantly and at a faster speed, thereby improving the bone conduction sound quality.

[0075] In some embodiments, as shown in Figures 3 to Figure 4 As shown, the housing assembly 100 may include a partition wall 150 for separating the first accommodating cavity 111 from the second accommodating cavity 112. The communication hole 113 may be opened in the partition wall 150. The bone conduction speaker 200 may block the communication hole 113 on the side of the partition wall 150 facing the first accommodating cavity 111.

[0076] The first accommodating chamber 111 and the second accommodating chamber 112 are separated by the partition wall 150, so as to further separate the bone conduction speaker 200 and the air conduction speaker 300, so that the bone conduction speaker 200 and the air conduction speaker 300 are not easy to collide with each other and cause damage to each other. Since the partition wall 150 separates the first accommodating chamber 111 and the second accommodating chamber 112, the assembly convenience of the bone conduction speaker 200 and the air conduction speaker 300 can also be improved. Furthermore, the bone conduction speaker 200 blocks the connecting hole 113 on the side of the partition wall 150 facing the first accommodating chamber 111, so that the connecting hole 113 is connected to the second accommodating chamber 112, and a larger volume of space can be formed, thereby improving the air conduction sound quality of the air conduction speaker 300.

[0077] In some embodiments, the bone conduction speaker 200 may abut against the partition wall 150 to block the communication hole 113. In other words, a wall surface of the bone conduction speaker 200 directly or indirectly abuts against the partition wall 150 to block the communication hole 113, thereby ensuring the airtightness of the first accommodating cavity 111.

[0078] In other embodiments, a seal 160 may be provided between the bone conduction speaker 200 and the partition wall 150, and the seal 160 is provided around the communication hole 113. One side of the seal 160 is in close contact with the partition wall 150 and surrounds the communication hole 113, and the other side of the seal 160 may be in close contact with a wall surface of the bone conduction speaker 200, so that the bone conduction speaker 200 can block the communication hole 113. The seal 160 provided between the bone conduction speaker 200 and the partition wall 150 can make the first accommodating cavity 111 more airtight, thereby increasing the effect of bone conduction.

[0079] In some embodiments, the sealant 160 may include at least one of a sealant and a sealing rubber ring. If the sealant 160 is a sealant, the sealant can be applied to the partition wall 150 outside the connecting hole 113 by dispensing, and then the bone conduction speaker 200 is pressed on the sealant and the partition wall 150, thereby blocking the connecting hole 113. The sealing rubber ring also has good sealing performance, so providing a sealing rubber ring between the partition wall 150 and the bone conduction speaker 200 can also improve the sealing performance of the first accommodating chamber 111. Of course, in other embodiments, the sealant 160 can also be other components such as a sealing pad, a soft filler, etc., which are not listed one by one in this embodiment.

[0080] In some embodiments, as shown in FIGS. 3 to 5 , the shell assembly 100 may be provided with a support wall 101 in the first accommodating cavity 111 , and the support wall 101 and the partition wall 150 may together enclose a limiting space 102 , and the bone conduction speaker 200 may be disposed in the limiting space 102 and abut against the support wall 101 , and the support wall 101 and the partition wall 150 may be used to cooperate in limiting the movement of the bone conduction speaker 200 relative to the shell assembly 100 in the radial direction.

[0081] Specifically, the direction in which the bone conduction speaker 200 vibrates relative to the housing assembly 100 may be the axial direction of the bone conduction speaker 200, and the direction perpendicular to the axial direction of the bone conduction speaker 200 may be the radial direction of the bone conduction speaker 200. The support wall 101 and the partition wall 150 may be used to cooperate to limit the movement of the bone conduction speaker 200 relative to the housing assembly 100 in any radial direction perpendicular to the axial direction. The axial direction of the bone conduction speaker 200 may be the two directions extended by the X-ray in FIG. 3, and the radial direction of the bone conduction speaker 200 may be the two directions extended by the X-ray in FIG. 3 and Figure 4 The Y line extends in two directions, but the radial direction is not limited to the direction specifically shown in Y.

[0082] Optionally, one end of the support wall 101 can be connected to the first housing 120 or the second housing 130, and the other end extends toward the bone conduction speaker 200. The support wall 101 is adapted to correspond to the outer surface of the bone conduction speaker 200, so that the support wall 101 fits the bone conduction speaker 200 in the radial direction of the bone conduction speaker 200, so that the support wall 101 and the partition wall 150 can be used to cooperate to limit the movement of the bone conduction speaker 200 relative to the housing assembly 100 in the radial direction, thereby limiting the movement of the bone conduction speaker 200 to the axial direction of the bone conduction speaker 200, and also making the internal structure of the speaker assembly 10 more compact.

[0083] In some embodiments, as shown in FIG. 3 , the bone conduction speaker 200 may have a first central axis X, and may be configured to generate vibrations in the direction of the first central axis X. The bone conduction speaker 200 may have a peripheral side surface 201 disposed around the first central axis X, and the peripheral side surface 201 blocks the communication hole 113. The two directions indicated by the first central axis X may also be the axial direction of the bone conduction speaker 200, and the bone conduction speaker 200 generates vibrations in the direction of the first central axis X and transmits sound to the user in a bone conduction vibration manner.

[0084] Optionally, the circumferential side surface 201 of the bone conduction speaker 200 may abut against the supporting wall 101 , and the supporting wall 101 and the partition wall 150 may cooperate together to act on the circumferential side surface 201 of the bone conduction speaker 200 to limit the movement of the bone conduction speaker 200 relative to the housing assembly 100 in the radial direction.

[0085] Of course, in other embodiments, the partition wall 150 may be eliminated, and the connecting hole 113 separates the first accommodating chamber 111 from the second accommodating chamber 112 . The bone conduction speaker 200 may be in a closed configuration, thereby ensuring the airtightness of the bone conduction speaker 200 and ensuring the bone conduction effect of the bone conduction speaker 200 .

[0086] In some embodiments, as shown in Figures 3 to Figure 4 As shown, the air conduction speaker 300 has a second central axis Y and is configured to generate vibration in the direction of the second central axis Y.

[0087] Optionally, the first central axis X and the second central axis Y may be perpendicular to each other, and the direction of the first central axis X may be the axial direction of the bone conduction speaker 200 , and the direction of the second central axis Y may be a radial direction perpendicular to the axial direction of the bone conduction speaker 200 .

[0088] Optionally, as shown in Figures 3 to Figure 6 As shown, the housing assembly 100 may have a first side 103, a second side 104 and a third side 105, wherein the first side 103 and the second side 104 are arranged opposite to each other in a vertical direction of the first central axis X and the second central axis Y, and the third side 105 is arranged adjacent to the first side 103 and the second side 104. Optionally, the first central axis X or the second central axis Y may pass through the third side 105. One of the pressure relief holes 115 may be opened on the first side 103 or the second side 104, and another of the pressure relief holes 115 may be opened on the third side 105.

[0089] For example, in some embodiments, the first central axis X may pass through the third side 105. The housing assembly 100 has a face-contacting side for transmitting bone conduction vibration to the user's face, and the third side 105 is disposed opposite to the face-contacting side. In other embodiments, the second central axis Y passes through the third side 105. The third side 105 is opposite to the side where the sound outlet 114 is located on the housing assembly 100.

[0090] By providing a plurality of pressure relief holes 115, and providing different pressure relief holes 115 on different sides of the housing assembly 100, the pressure relief area of ​​the second accommodating chamber 112 for pressure relief to the external environment can be increased, and air can be quickly circulated between the external environment and the second accommodating chamber 112, and the air in the acoustic sound cavity of the second accommodating chamber 112 can be further quickly guided out to the external environment, reducing the damping of the operation of the air conduction speaker 300 due to the difficulty of air flow, thereby also avoiding as much as possible that the second accommodating chamber 112 cannot be pressure-relieved after one pressure relief hole 115 is blocked, and affecting the vibration sound waves of the air conduction speaker 300. Moreover, the pressure relief holes 115 provided on the first side 103 or 104, and provided on the third side 105 can reduce the probability of interference between the sounds guided out by the pressure relief holes 115 on the basis of increasing the pressure relief area, especially the probability of constructive interference, thereby improving the sound quality effect, and further reducing the influence on the sound transmitted from the sound outlet hole 114.

[0091] In some embodiments, Figure 6 As shown, the housing assembly 100 may be provided with an outwardly protruding body edge 106 on the third side 105 , wherein another pressure relief hole 115 passes through the body edge 106 to communicate with the external environment.

[0092] Optionally, the body edge 106 of the third side 105 can protrude outward relative to the housing assembly 100 or can be recessed inward of the housing assembly 100. By arranging another pressure relief hole 115 at the position of the body edge 106, the pressure relief hole 115 will not be easily covered when the earphone 1 is worn, thereby ensuring air circulation in the pressure relief hole 115.

[0093] In some embodiments, Figures 4 to 7 As shown, in the vertical direction Z of the first central axis X and the second central axis Y, the first accommodating cavity 111 may have a first bottom wall 1111 and a second bottom wall 1112 arranged opposite to each other, and the second accommodating cavity 112 may have a third bottom wall 1123 and a fourth bottom wall 1124 arranged opposite to each other. The first bottom wall 1111 and the third bottom wall 1123 may be arranged adjacent to each other, and the second bottom wall 1112 and the fourth bottom wall 1124 may be arranged adjacent to each other. The vertical direction has a positive direction from the first bottom wall 1111 surface to the second bottom wall 1112 surface and a reverse direction opposite to the positive direction. The positive direction is shown in FIG3 and Figure 7 Indicated by the Z arrow.

[0094] Optionally, the peripheral side surface 201 of the bone conduction speaker 200 can abut against the first bottom wall 1111 , and the first bottom wall 1111 , the supporting wall 101 and the partition wall 150 together enclose a limited space 102 . The bone conduction speaker 200 can be disposed in the limited space 102 and abut against the supporting wall 101 and the first bottom wall 1111 .

[0095] In the positive direction, the lowest position of the first bottom wall 1111 may be higher than the lowest position of the third bottom wall 1123 .

[0096] In some embodiments, the housing assembly 100 has a wall portion 1101 adjacent to the first accommodating cavity 111 in a vertical direction, and the pressure relief hole 115 is opened in the wall portion.

[0097] Specifically, the pressure relief hole 115 is opened in the wall portion 1101 between the first bottom wall 1111 and the third bottom wall 1123, so that the space in the housing assembly 100 can be fully utilized to improve the space utilization rate of the speaker assembly 10. And the lowest position of the first bottom wall 1111 can be higher than the lowest position of the third bottom wall 1123, so that the first bottom wall 1111 and the third bottom wall 1123 can be staggered in the positive direction, and the wall portion 1101 between the two can have a larger space to set the pressure relief hole 115, and then the size of the pressure relief hole 115 can be set larger, so that the size of the pressure relief hole 115 can be increased, and the pressure relief effect can be improved.

[0098] In some embodiments, Figure 4 As shown in FIG. 5 , the pressure relief hole 115 can be arranged in a trumpet shape extending from the second accommodating space 110 to the outside of the housing assembly 100, and the pressure relief hole 115 can be arranged such that the portion of the hole wall close to the third bottom wall 1123 gradually tilts in the reverse direction toward the side where the third bottom wall 1123 is located. In this way, the size of the pressure relief hole 115 can be further increased, and the pressure relief hole 115 can be conveniently used for pressure relief, thereby enhancing the sound quality of the speaker assembly 10.

[0099] In some embodiments, as shown in Figures 3 to Figure 7 As shown, the first central axis X and the second central axis Y may be skew lines, and in a direction perpendicular to the first central axis X and the second central axis Y, the first central axis X and the second central axis Y are staggered from each other.

[0100] Among them, the bone conduction speaker 200 vibrates along the direction of the first central axis X, and the air conduction speaker 300 vibrates along the direction of the second central axis Y. Therefore, setting the first central axis X and the second central axis Y as skew lines and staggered with each other can reduce the mutual interference between the bone conduction speaker 200 and the air conduction speaker 300 during vibration, thereby improving the effect of both generating and conducting sound.

[0101] For example, in some embodiments, Figure 7 As shown, the first central axis X can be set higher than the second central axis Y in the positive direction, and the lowest position of the first bottom wall 1111 can be conveniently set higher than the lowest position of the third bottom wall 1123, thereby facilitating the formation of the trumpet-shaped pressure relief hole 115, and the size of the trumpet-shaped pressure relief hole 115 can be set larger.

[0102] In some embodiments, Figure 7 As shown, the distance P between the first central axis X and the second central axis Y may be 0.2-0.8 mm. The distance between the first central axis X and the second central axis Y may be as shown in FIG5 as the distance P. For example, the distance P between the first central axis X and the second central axis Y may be 0.3, 0.5 or 0.7.

[0103] Optionally, in the positive direction, the first central axis X is higher than the second central axis Y. By setting the distance between the first central axis X and the second central axis Y in this way, the lowest position of the first bottom wall 1111 can be higher than the lowest position of the third bottom wall 1123 , while the size of the speaker assembly 10 can be controlled and reduced.

[0104] In some embodiments, Figure 8 as well as Fig. 9 As shown, the bone conduction speaker 200 may include a cylindrical cover 210, a voice coil assembly 221, a magnet assembly 222, and a vibration transmission piece 223 extending along the first central axis X. The voice coil assembly 221 and the magnet assembly 222 may be arranged in a cylindrical space of the cylindrical cover 210. The vibration transmission piece 223 may be fixedly connected to the first of the magnet assembly 222 and the voice coil assembly 221 and the cylindrical cover 210. The magnet assembly 222 and the second of the voice coil assembly 221 are fixedly connected to the cylindrical cover 210. The cylindrical cover 210 blocks the communication hole 113.

[0105] Among them, the magnet assembly 222 is used to generate vibration when the current passes through the voice coil assembly 221, and its magnetic field interacts with the voice coil assembly 221 to convert the sound-related current signal into a vibration signal. The voice coil assembly 221 is used to generate an electrical signal when the current passes through, and interact with the magnetic field of the magnet assembly 222, so that the magnet assembly 222 vibrates. The cylindrical cover 210 can be a magnetic cover, which can be used to constrain the magnetic field direction of the magnet assembly 222. The cylindrical cover 210 can also be used to contact the housing assembly 100, and when the voice coil assembly 221 vibrates, the voice coil assembly 221 can drive the cylindrical cover 210 to vibrate, so as to transmit the vibration signal to the housing assembly 100 through the cylindrical cover 210. The vibration transmission piece 223 is used to elastically connect the voice coil assembly 221 and the magnet assembly 222, so as to elastically constrain the voice coil assembly 221 and the magnet assembly 222 to move relative to each other along the direction of the first central axis X.

[0106] In some embodiments, Figure 10 to Figure 11As shown, the air conduction speaker 300 may include a diaphragm 310 and a driving mechanism 320, the driving mechanism 320 may be connected to the diaphragm 310, and an internal sound cavity 330 may be enclosed between the diaphragm 310 and the driving mechanism 320. The driving mechanism 320 is used to drive the diaphragm 310 to vibrate under the control of an electrical signal, so that the air in the internal sound cavity 330 in the air conduction speaker 300 vibrates to generate sound waves.

[0107] There are many ways to arrange the air conduction speaker 300 in the second accommodating cavity 112. For example, the internal sound cavity 330 can be connected to the second sub-cavity 1122 to connect to the pressure relief hole 115, or the internal sound cavity 330 can be connected to the first sub-cavity 1121. Two of them are illustrated below.

[0108] The first way: the diaphragm 310 may be closer to the communication hole 113 than the driving mechanism 320 . The diaphragm 310 and the communication hole 113 are arranged opposite to each other and face the second sub-cavity 1122 . The first sub-cavity 1121 may be connected to the internal sound cavity 330 .

[0109] When the driving mechanism 320 drives the diaphragm 310 to vibrate, the diaphragm 310 is closer to the connecting hole 113, that is, closer to the bone conduction speaker 200. On the one hand, since the radial dimension of the diaphragm 310 is large and the radial dimension of the driving mechanism 320 is small, the larger diaphragm 310 is placed close to the bone conduction speaker 200, and the smaller driving mechanism 320 is placed close to the outside, which can effectively reduce the volume of the shell assembly 100 close to the outside, making the volume and size of the speaker assembly 10 more compact and reasonable, and improving the utilization rate of the internal space of the speaker assembly 10. On the other hand, the diaphragm 310 is arranged opposite to the connecting hole 113 and faces the second sub-cavity 1122, which can effectively increase the volume of the second sub-cavity 1122, and the air in the second sub-cavity 1122 is effectively conducted to the outside through the pressure relief hole 115, thereby improving the pressure relief effect.

[0110] The second way: the diaphragm 310 may be further away from the communication hole 113 than the driving mechanism 320 , the diaphragm 310 may be away from the communication hole 113 and toward the first sub-cavity 1121 , and the second sub-cavity 1122 is connected to the internal sound cavity 330 .

[0111] By arranging the diaphragm 310 away from the connecting hole 113 and toward the first sub-cavity 1121, the sound waves generated by the diaphragm 310 can be easily transmitted to the first sub-cavity 1121. In addition, due to the existence of the connecting hole 113 and the second sub-cavity 1122, the internal sound cavity 330 is enlarged, and the pressure is released through the pressure relief hole 115, which can effectively improve the pressure relief effect.

[0112] In some embodiments, Figure 10 to Figure 11As shown, the driving mechanism 320 may include a voice coil 321 and a magnetic circuit assembly 322, wherein the magnetic circuit assembly 322 includes a cover 3222 having an open end 3221 and an annular flange 3223 disposed at the open end 3221 of the cover 3222 and protruding from the outer circumference of the cover 3222. The magnetic circuit assembly 322 is used to interact with the voice coil 321 to generate vibration, and the voice coil 321 is used to interact with the magnetic field of the magnetic circuit assembly 322 when current passes through, thereby driving the magnetic circuit assembly 322 to generate vibration.

[0113] The edge of the diaphragm 310 may be fixed to the annular flange 3223. The voice coil 321 may be connected to the side of the diaphragm 310 facing the magnetic circuit assembly 322. An internal sound cavity 330 may be enclosed between the diaphragm 310 and the magnetic circuit assembly 322. The diaphragm 310 may be located on the side of the cover 3222 away from the sound outlet 114 and facing the connecting hole 113, and the first sub-cavity 1121 is connected to the internal sound cavity 330. The first sub-cavity 1121 is connected to the internal sound cavity 330, so that the sound waves generated by the vibration of the air inside the internal sound cavity 330 can be transmitted outside the speaker assembly 10 through the first sub-cavity 1121 and the sound outlet 114.

[0114] Optionally, the annular flange 3223 can be arranged on the side away from the sound outlet hole 114, and the diaphragm 310 can be arranged on the side away from the sound outlet hole 114, so that the diaphragm 310 and the annular flange 3223 can be closer to the interior of the shell assembly 100, thereby achieving the air conduction speaker 300 having a diaphragm 310 and annular flange 3223 with a larger radial dimension and arranged away from the sound outlet hole 114, while the smaller part of the air conduction speaker 300 can be close to the sound outlet hole 114. Compared with the structure of the traditional speaker diaphragm 310 that must face the sound outlet 114, the reversely arranged structure of the air conduction speaker 300 can effectively make the size of the part of the shell of the shell assembly 100 close to the sound outlet 114 smaller, so that the size of the shell assembly 100 from the middle area to the part of the sound outlet 114 can be reduced (that is, the radial size of the outer peripheral surface of the shell assembly 100 can be gradually reduced), thereby making the structure more compact, effectively improving the space utilization of the shell assembly 100, and reducing the overall volume of the entire shell assembly 100. Moreover, this reversely arranged structure can optimize the sound output path, thereby improving the sound quality. Simply put, the air conduction speaker 300 is reversed along the air conduction vibration direction, thereby effectively reducing the structural size of the shell assembly 100.

[0115] In the speaker assembly 10, if the sound outlet hole 114 and the pressure relief hole 115 are located close to each other, the sound waves generated by the pressure relief hole 115 and the sound outlet hole 114 will affect each other and may interfere in the near field. The low-frequency sound waves transmitted by the sound outlet hole 114 are easily weakened by the anti-phase interference of the sound waves released when the pressure relief hole 115 releases pressure, thereby causing sound cancellation. The relevant technical means of the pressure relief hole 115 and the sound outlet hole 114 are further described in the following embodiments.

[0116] The following is an exemplary description of earphone 1 according to another embodiment.

[0117] As mentioned above, the housing assembly 100 may define an accommodation space 110 . The air conduction speaker 300 is disposed in the accommodation space 110 . The bone conduction speaker 200 is disposed in the accommodation space 110 .

[0118] Optionally, the bone conduction speaker 200 has a first central axis X, and can vibrate in the direction of the first central axis X. The air conduction speaker 300 has a second central axis Y, and can vibrate in the direction of the second central axis Y. Specifically, the voice coil and the diaphragm of the air conduction speaker 300 vibrate in the direction of the second central axis Y.

[0119] The housing assembly 100 is further provided with a sound outlet 114 and a pressure relief hole 115 connected to the accommodating space 110. The sound outlet 114 and the pressure relief hole 115 are respectively used to conduct part of the sound waves generated by the air conduction speaker 300 to the external environment. The pressure relief hole 115 and the sound outlet 114 can be respectively located on two opposite sides of the housing assembly 100.

[0120] like Figure 12 to Figure 13 As shown, the housing assembly 100 may include a first housing 120, a second housing 130 and a third housing 140. The first housing 120, the second housing 130 and the third housing 140 may be collectively enclosed to form an accommodating space 110. Optionally, the second housing 130 may be connected to the first housing 120 along the direction of the first central axis X, and the third housing 140 may be connected to the second housing 130 along the direction of the second central axis Y. Optionally, the sound outlet 114 may be provided in the third housing 140, and the pressure relief hole 115 may be provided in the portion of the first housing 120 away from the third housing 140, so that the sound outlet 114 and the pressure relief hole 115 are respectively located on two opposite sides of the housing assembly 100.

[0121] By arranging the sound hole 114 and the pressure relief hole 115 on two opposite side surfaces of the shell assembly 100, compared with arranging the sound hole 114 and the pressure relief hole 115 on other adjacent or identical side surfaces of the shell assembly 100, the distance between the sound hole 114 and the pressure relief hole 115 can be increased, so as to reduce the mutual influence between the sound hole 114 and the pressure relief hole 115, reduce the interference and destructive interaction between the sound hole 114 and the pressure relief hole 115 in the near field, and weaken the sound waves transmitted by the sound hole 114, thereby reducing the sound cancellation phenomenon between the two, improving the low-frequency effect of the speaker assembly 10, and thus improving the sound quality of the earphone 1.

[0122] In some embodiments, Figure 12 to Figure 13 As shown, the speaker assembly 10 may be provided with a pressure relief channel 400 connected to the pressure relief hole 115. The sound outlet hole 114 may be connected to the accommodating space 110, and the pressure relief channel 400 is used to guide part of the sound waves generated by the air conduction speaker 300 in the accommodating space 110 to the pressure relief hole 115.

[0123] By setting the pressure relief channel 400 to connect the accommodating space 110 and the pressure relief hole 115, the air required for pressure relief in the accommodating space 110 can be conveniently guided into the pressure relief channel 400, and further pressure relief can be achieved through the pressure relief hole 115. On the one hand, the pressure relief path can be extended to improve the pressure relief effect. On the other hand, the pressure relief channel 400 is connected to the pressure relief hole 115, so that the sound waves required for pressure relief are not easy to affect the work of other components during the pressure relief process, thereby improving the sound quality of the speaker assembly 10. The setting of the pressure relief channel 400 can also achieve precise positioning of the pressure relief of the air conduction speaker 300, while reducing the mutual influence between the sound outlet hole 114 and the pressure relief hole 115, and improving the flexibility of the pressure relief of the air conduction speaker 300.

[0124] In some embodiments, the pressure relief channel 400 and the accommodating space 110 may be spaced apart from each other, and the pressure relief channel 400 may be connected to the accommodating space 110. Optionally, the first shell 120 may be provided with the above-mentioned pressure relief channel 400, one end of which is connected to the accommodating space 110, and the other end of the pressure relief channel 400 is formed as a pressure relief hole 115. Specifically, the pressure relief channel 400 and the accommodating space 110 may be spaced apart from each other, so that the gas to be depressurized can be depressurized independently, and spaced apart from other elements in the accommodating space 110, so as not to easily affect the elements in the accommodating space 110. Further, by providing the pressure relief channel 400 in the first shell 120, on the one hand, the distance between the pressure relief hole 115 and the sound outlet hole 114 can be made larger, and on the other hand, when the first shell 120, the second shell 130 and the third shell 140 are assembled, there is no need to assemble the pressure relief channel 400 additionally, thereby improving the assembly efficiency.

[0125] In some embodiments, Figure 12 to Figure 13 As shown, the accommodating space 110 may include a first accommodating chamber 111 and a second accommodating chamber 112 separated from each other, the bone conduction speaker 200 is arranged in the first accommodating chamber 111, the air conduction speaker 300 is arranged in the second accommodating chamber 112, the sound outlet hole 114 is connected to the second accommodating chamber 112, the pressure relief channel 400 is connected to the second accommodating chamber 112, and is spaced apart from the first accommodating chamber 111, and the pressure relief channel 400 is connected to the second accommodating chamber 112 and the pressure relief hole 115.

[0126] Optionally, the second shell 130 and the first shell 120 are connected to each other in cooperation to form a first accommodating cavity 111 , and the third shell 140 and the first shell 120 are connected to each other in cooperation to form a second accommodating cavity 112 .

[0127] Since the bone conduction speaker 200 and the air conduction speaker 300 have different working principles, the first accommodating chamber 111 and the second accommodating chamber 112 and the pressure relief channel 400 are separated from each other, so that the independence of the operation of the bone conduction speaker 200 can be ensured, the influence of the operation of the air conduction speaker 300 on the bone conduction speaker 200 can be minimized, and the bone conduction speaker 200 can be protected to a certain extent. During the operation of the earphone 1, the sound waves generated by the air conduction speaker 300 through the air vibration principle can be transmitted to the outside of the speaker assembly 10 through the sound outlet 114 to be transmitted to the ear canal of the user. Therefore, the second accommodating chamber 112 where the air conduction speaker 300 is located is connected to the external environment through the pressure relief hole 115, so that the air can flow freely in the second accommodating chamber 112 and the air conduction speaker 300, and the air in the second accommodating chamber 112 is prevented from damping the vibration of the air conduction speaker 300 and affecting the sound quality effect produced by the air conduction speaker 300.

[0128] In some embodiments, the first accommodating chamber 111 and the second accommodating chamber 112 may be isolated from each other. Specifically, the area of ​​the connection between the first accommodating chamber 111 and the external environment may be smaller than the area of ​​the connection between the second accommodating chamber 112 and the external environment and the area of ​​the connection between the pressure relief channel 400 and the external environment. In other words, the airtightness of the first accommodating chamber 111 is stronger than the airtightness of the second accommodating chamber 112 and the pressure relief channel 400. The airtightness may be understood as the airtightness of the cavity space.

[0129] Since the bone conduction speaker 200 requires a highly sealed environment to ensure the bone conduction effect, the bone conduction speaker 200 and the air conduction speaker 300 are independently arranged in two different cavities in the accommodating space 110 to effectively reduce the mutual interference between the bone conduction speaker 200 and the air conduction speaker 300, and the bone conduction speaker 200 is placed in the first accommodating cavity 111 with stronger sealing, which can also effectively enhance the sound quality effect produced by the bone conduction speaker 200.

[0130] Optionally, in a direction perpendicular to the arrangement direction of the first accommodating chamber 111 and the second accommodating chamber 112, the pressure relief channel 400 and the first accommodating chamber 111 are arranged at intervals. Figure 12 to Figure 13 As shown, the arrangement direction of the first accommodating cavity 111 and the second accommodating cavity 112 may be consistent with the direction of the second central axis Y of the air conduction speaker 300, and may be Fig.12 as well as Fig.13 In the direction indicated by the middle Y line, the vertical direction of the arrangement direction of the first accommodation cavity 111 and the second accommodation cavity 112 is as shown in FIG. Fig.12 as well as Fig.13 Indicated by the Z arrow.

[0131] Optionally, the length component of the extended length of the pressure relief channel 400 along the arrangement direction is greater than the length component thereof along the vertical direction. This arrangement can make the pressure relief channel 400 occupy a smaller dimension in the vertical direction, thereby reducing the dimension of the speaker assembly 10 in the vertical direction, and can make the distance between the sound outlet 114 and the pressure relief hole 115 larger, so as to reduce the mutual influence between the sound outlet 114 and the pressure relief hole 115 in the near field. Among them, the length component of the extended length of the pressure relief channel 400 along the arrangement direction is as follows: Fig.13 As shown in the length E, the length component of the pressure relief channel 400 in the vertical direction is as follows Fig.11 As shown in the middle length F, E>F.

[0132] In some embodiments, Figure 12 to Figure 13 As shown, the shell assembly 100 may be provided with a first partition wall 170 between the first accommodating chamber 111 and the second accommodating chamber 112, and a second partition wall 180 may be provided between the pressure relief channel 400 and the first accommodating chamber 111. The first partition wall 170 may separate the second accommodating chamber 112 from the first accommodating chamber 111. The second partition wall 180 may be used to separate the pressure relief channel 400 from the first accommodating chamber 111. In this way, an independent pressure relief channel 400 and the first accommodating chamber 111 may be formed. On the one hand, the existence of the pressure relief channel 400 may extend the pressure relief path, increase the size of the pressure relief space, and improve the pressure relief effect, thereby improving the sound quality. On the other hand, the working processes of the air conduction speaker 300 and the bone conduction speaker 200 may not interfere with each other, reduce the mutual influence between the two, and ensure the sound quality output effect of each.

[0133] Optionally, one end of the second partition wall 180 may be connected to the first shell 120 , and the other end thereof may be connected to the first partition wall 170 , so that the pressure relief channel 400 and the first accommodating chamber 111 can be arranged in a spaced relationship in the vertical direction.

[0134] Alternatively, if Fig.13As shown, the first partition wall 170 may be further extended to between the second accommodating chamber 112 and the pressure relief channel 400, and the first partition wall 170 may be provided with a sound-introducing hole 173, which connects the second accommodating chamber 112 and the pressure relief channel 400. The pressure relief hole 115 is connected to the second accommodating chamber 112 through the pressure relief channel 400 and the sound-introducing hole 173. When the earphone 1 is working, part of the sound waves generated by the air conduction speaker 300 that need to be decompressed may be transmitted out of the speaker assembly 10 through the second accommodating chamber 112, the sound-introducing hole 173, the pressure relief channel 400 and the pressure relief hole 115 in sequence, thereby preventing the air in the second accommodating chamber 112 from damping the vibration of the air conduction speaker 300 and affecting the sound quality effect produced by the air conduction speaker 300.

[0135] In some embodiments, Fig.13 As shown, the housing assembly 100 may have a first communication hole 172 between the first accommodating cavity 111 and the second accommodating cavity 112, and the first communication hole 172 may connect the first accommodating cavity 111 and the second accommodating cavity 112. The bone conduction speaker 200 may block the first communication hole 172 to isolate the first accommodating cavity 111 and the second accommodating cavity 112 from each other.

[0136] The first connecting hole 172 is provided between the first accommodating chamber 111 and the second accommodating chamber 112, and the bone conduction speaker 200 is used to block the first connecting hole 172 on one side of the first connecting hole 172, so that the use space of the first accommodating chamber 111 can be expanded while ensuring the strong airtightness of the second accommodating chamber 112, which can effectively improve the convenience of assembling the air conduction speaker 300 and the reliability of the structural setting, and can simply and effectively expand the volume of the sound cavity space formed by the air conduction speaker 300 in the second accommodating chamber 112, which can improve the sound effect of the air conduction speaker 300 and improve the sound quality of the air conduction speaker 300. In other words, while keeping the volume of the sound cavity space unchanged, the air conduction speaker 300 can be arranged closer to the side of the bone conduction speaker 200, which can reduce the size of the speaker assembly 10 and achieve compactness of the overall size.

[0137] In some embodiments, Fig.13 As shown, the shell assembly 100 may be provided with a second connecting hole 181 between the first accommodating chamber 111 and the pressure relief channel 400, and the second connecting hole 181 may connect the first accommodating chamber 111 and the pressure relief channel 400. The bone conduction speaker 200 blocks the second connecting hole 181 to isolate the first accommodating chamber 111 and the pressure relief channel 400 from each other.

[0138] Similarly, a second connecting hole 181 is provided to connect the first accommodating chamber 111 and the pressure relief channel 400, and a bone conduction speaker 200 is provided to block the second connecting hole 181. This can increase the area of ​​the pressure relief channel 400 while ensuring the strong airtightness of the first accommodating chamber 111, so that the pressure relief channel 400 has a larger space for pressure relief, thereby improving the pressure relief effect. Alternatively, the pressure relief channel 400 can be closer to the first accommodating chamber 111 while ensuring the area size, thereby reducing the size of the speaker assembly 10 in the vertical direction.

[0139] Of course, in other embodiments, the pressure relief channel 400 may be configured in other forms. Other forms of the pressure relief channel 400 are described exemplarily below.

[0140] In some embodiments, Fig.14 As shown, the speaker assembly 10 includes a channel tube 500 formed with a pressure relief channel 400. The channel tube 500 is fixedly arranged on the shell assembly 100 and located in the first accommodating cavity 111. One end of the channel tube 500 is connected to the second accommodating cavity 112, and the other end is connected to the pressure relief hole 115.

[0141] Optionally, a first partition wall 170 may be provided between the first accommodating chamber 111 and the second accommodating chamber 112, and the first partition wall 170 may separate the second accommodating chamber 112 from the first accommodating chamber 111. One end of the channel tube 500 may be connected to the first partition wall 170 to communicate with the second accommodating chamber 112, and the other end may be communicated with the pressure relief hole 115 on the first housing 120, so as to connect the second accommodating chamber 112 with the external environment. Optionally, the bone conduction speaker 200 may be arranged in a vertical direction with the channel tube 500.

[0142] The channel tube 500 is disposed in the first accommodating chamber 111, and is isolated from the first accommodating chamber 111 and is not connected to each other. Specifically, the portion of the channel tube 500 that is connected to the second accommodating chamber 112 is sealed relative to the first accommodating chamber 111, and the portion of the channel tube 500 that is connected to the pressure relief hole 115 is also sealed relative to the first accommodating chamber 111. Specifically, the channel tube 500 is sealedly connected to the first shell 120 in the first accommodating chamber 111, and is not connected to the first accommodating chamber 111, so that the strong airtightness of the first accommodating chamber 111 can be ensured, thereby ensuring the bone conduction effect of the bone conduction speaker 200.

[0143] In other embodiments, Fig.15 As shown, part of the accommodating space 110 may be formed as a pressure relief channel 400 .

[0144] Optionally, the bone conduction speaker 200 may be configured as a sealed structure, the interior of which is isolated from the accommodating space 110. A pressure relief channel 400 may be formed between the bone conduction speaker 200 and the inner wall of the accommodating space 110. Since the bone conduction speaker 200 is a sealed structure, the bone conduction speaker 200 can be prevented from being affected by the water vapor in the accommodating space 110 as much as possible, so that the bone conduction speaker 300 can adapt to a non-sealed environment and can produce a better bone conduction effect without strong airtightness.

[0145] Alternatively, if Fig.15 As shown, the accommodation space 110 may include a first accommodation chamber 111 and a second accommodation chamber 112 spaced apart from each other, the bone conduction speaker 200 may be disposed in the first accommodation chamber 111, and may be surrounded by the inner wall of the first accommodation chamber 111 to form a pressure relief channel 400. The air conduction speaker 300 may be disposed in the second accommodation chamber 112. The housing assembly 100 is provided with a sound guide hole 173 between the first accommodation chamber 111 and the second accommodation chamber 112, and the sound guide hole 173 communicates the first accommodation chamber 111 and the second accommodation chamber 112.

[0146] Specifically, the pressure relief hole 115 is disposed on the first housing 120 and communicates with the first accommodating cavity 111. The sound waves generated by the air conduction speaker 300 that need to be discharged can be discharged out of the speaker assembly 10 through the second accommodating cavity 112, the sound guide hole 173, the first accommodating cavity 111 (i.e., the pressure relief channel 400) and the pressure relief hole 115 in sequence.

[0147] In this way, the pressure relief channel 400 is formed by the bone conduction speaker 200 and the inner wall of the first accommodating chamber 111, so that the internal structure of the first accommodating chamber 111 can be simplified, and the size of the first accommodating chamber 111 can be reduced, thereby making the structure of the speaker assembly 10 more compact. In addition, by forming the pressure relief channel using the first accommodating chamber 111 and the bone conduction speaker 200, the space utilization rate of the first accommodating chamber 111 can be improved, and the space of the first accommodating chamber 111 can be fully utilized to increase the size of the pressure relief channel 400, thereby improving the pressure relief effect, and thereby improving the sound quality of the air conduction speaker 300.

[0148] In some embodiments, Figures 8 to 9 As shown, the bone conduction speaker 200 may include a cylindrical cover 210, a driving assembly 220 and two sealing plates 230. The cylindrical cover 210 may be fixedly connected to the housing assembly 100, and the driving assembly 220 is disposed in the cylindrical cover 210. The driving assembly 220 is used to drive the cylindrical cover 210 to vibrate, thereby driving the housing assembly 100 to vibrate. The two sealing plates 230 may be respectively disposed at both ends of the cylindrical cover 210, and block the cylindrical cover 210 to form a closed structure.

[0149] Optionally, the driving assembly 220 is disposed between the two sealing plates 230, and the driving assembly 220 and the two sealing plates 230 are arranged in sequence in the direction of the first central axis X. The driving assembly 220 is used to generate vibrations in the direction of the first central axis X under the action of the current signal, so as to drive the cylindrical cover 210 and the housing assembly 100 to vibrate, thereby transmitting the vibration signal to the human body that is attached to the housing assembly 100, thereby realizing the function of bone conduction.

[0150] By setting two sealing plates 230 to seal the cylindrical cover 210, the airtight structure of the bone conduction speaker 200 is realized, the interference of external water vapor and dust on the bone conduction speaker 200 is reduced, and the structure of the bone conduction speaker 200 is made more integrated, thereby improving the compactness of the structure. Optionally, the sealing plate 230 can be set as a magnetic conductive sheet plate, which can suppress the leakage of the driving component 220, thereby improving the magnetic field strength in the cylindrical cover 210.

[0151] In some embodiments, Figures 8 to 9 As shown, the bone conduction speaker 200 may further include a vibration transmitting piece 223. The driving assembly 220 may further include a voice coil assembly 221 and a magnet assembly 222, the voice coil assembly 221 may be sleeved on the magnet assembly 222, the vibration transmitting piece 223 may be fixedly connected to the cylindrical cover 210 and one of the voice coil assembly 221 and the magnet assembly 222, and the other of the voice coil assembly 221 and the magnet assembly 222 may be fixedly connected to the cylindrical cover 210.

[0152] Among them, the magnetic assembly 222 is used to interact with the voice coil assembly 221 when the current passes through the voice coil assembly 221, thereby generating vibration to convert the sound-related current signal into a vibration signal. The voice coil assembly 221 is used to generate an electrical signal when the current passes through, which interacts with the magnetic field of the magnet assembly 222, thereby generating vibration. The cylindrical cover 210 is used to constrain the magnetic field direction of the magnet assembly 222. The cylindrical cover 210 is also used to contact the shell assembly 100, and when the voice coil assembly 221 vibrates, the voice coil assembly 221 can drive the cylindrical cover 210 to vibrate, thereby transmitting the vibration signal to the shell assembly 100 through the cylindrical cover 210. The vibration transmission piece 223 is used to elastically connect the voice coil assembly 221 and the magnet assembly 222 to elastically constrain the voice coil assembly 221 and the magnet assembly 222 to move relative to each other along the direction of the first central axis X.

[0153] The following embodiments further exemplarily describe the sealing structure of the bone conduction speaker 200 .

[0154] 5 , the bone conduction speaker 200 is disposed in the accommodation space 110. The bone conduction speaker 200 is connected to the housing assembly 100. Specifically, when the earphone 1 is in use, the housing assembly 100 can fit the user's body, and the bone conduction speaker 200 is used to drive the housing assembly 100 to vibrate through bone conduction vibration to conduct sound to the user.

[0155] In some embodiments, Figures 8 to 9 As shown, the bone conduction speaker 200 may include a cylindrical housing 210, a driving assembly 220 and two sealing plates 230. The cylindrical housing 210 may enclose a receiving space 211. The driving assembly 220 may be disposed in the receiving space 211 and connected to the cylindrical housing 210. The two sealing plates 230 may be disposed at both ends of the cylindrical housing 210, respectively, and seal the receiving space 211.

[0156] The driving assembly 220 can be used to convert the current signal into a vibration signal, so that when the bone conduction speaker 200 is in use, the driving assembly 220 can generate vibrations and drive the cylindrical cover 210 to vibrate. The two sealing plates 230 are used to seal the two ends of the cylindrical cover 210, so that the accommodating space 211 where the driving assembly 220 is located forms a closed space, thereby limiting the driving assembly 220 and preventing the driving assembly 220 from falling out of the cylindrical cover 210. Moreover, by sealing the cylindrical cover 210 with two sealing plates 230, impurities such as dust and water droplets can be prevented from entering the accommodating space 211 to affect the vibration of the driving assembly 220, thereby ensuring the bone conduction effect of the bone conduction speaker 200 and extending the service life of the bone conduction speaker 200. In addition, the structure of the bone conduction speaker 200 is made more integrated, and the compactness of the structure is improved.

[0157] Optionally, the sealing plate 230 may be configured as a magnetic conductive plate, which can suppress magnetic leakage of the driving assembly 220, thereby increasing the magnetic field strength in the cylindrical housing 210. For example, the sealing plate 230 may be a steel plate.

[0158] In some embodiments, Figures 8 to 9 As shown in FIG. 1 , the bone conduction speaker 200 may further include a vibration transmission piece 223, which connects the driving assembly 220 and the cylindrical cover 210. In the direction of the central axis of the cylindrical cover 210, the vibration transmission piece 223 may be disposed between the driving assembly 220 and the sealing plate 230, and is disposed opposite to the sealing plate 230. Specifically, the central axis of the cylindrical cover 210 may coincide with the first central axis X of the bone conduction speaker 200. The central axis direction of the cylindrical cover 210 is as shown in FIG. Figure 8 and Fig. 9 Indicated by the X arrow.

[0159] The vibration transmission piece 223 is used to connect the driving assembly 220 to limit the driving assembly 220, and the driving assembly 220 drives the cylindrical cover 210 to vibrate by driving the vibration transmission piece 223 during the vibration process. Specifically, in the direction of the central axis of the cylindrical cover 210, the sealing plate 230, the vibration transmission piece 223 and the driving assembly 220 are arranged in sequence. Among them, the vibration direction of the bone conduction speaker 200 can also be the direction of the central axis of the cylindrical cover 210, that is, the vibration direction of the driving assembly 220 is also the direction of the central axis of the cylindrical cover 210. In this way, when the driving assembly 220 is vibrating at work, the sealing plate 230 and the vibration transmission piece 223 can directly double limit the driving assembly 220 in the vibration direction of the driving assembly 220, and the sealing plate 230 can also limit the vibration transmission piece 223, thereby preventing the vibration transmission piece 223 from being excessively deformed during the working vibration of the driving assembly 220, thereby improving the service life of the vibration transmission piece 223.

[0160] In some embodiments, Figures 8 to 9 As shown, the two sealing plates 230 can be fixedly connected to the two ends of the cylindrical cover body 210 , and the periphery of the vibration transmission plate 223 is fixed to the inner wall of the cylindrical cover body 210 .

[0161] Alternatively, if Figures 8 to 9 As shown, at least one end of the cylindrical cover body 210 may be arranged in a stepped shape to form a first support surface 212 and a second support surface 213 with a step difference in the direction of the central axis, and the second support surface 213 may be closer to the central axis of the cylindrical cover body 210 than the first support surface 212. The sealing plate 230 is fixedly supported on the first support surface 212. The periphery of the vibration transmission plate 223 is fixedly supported on the second support surface 213.

[0162] Optionally, the first support surface 212 can be flush with the side of the vibration-transmitting piece 223 that is away from the second support surface 213, so that when the sealing plate 230 is fixedly supported on the first support surface 212, the vibration-transmitting piece 223 can be pressed against the second support surface 213 to further fix the vibration-transmitting piece 223 on the cylindrical cover 210. Such an arrangement can make the structure of the bone conduction speaker 200 more compact and also facilitate assembly and installation.

[0163] The connection between the sealing plate 230 and the first supporting surface 212 can be sealed (for example, sealant can be applied for fixing and sealing), and another sealing plate 230 arranged at the other end of the cylindrical cover body 210 can also be sealed with the cylindrical cover body 210, so that the cylindrical cover body 210 presents a closed structure.

[0164] In other embodiments, the vibration transmission piece 223 may be fixedly connected to one end of the cylindrical cover 210 , and the sealing plate 230 is fixedly stacked on a side of the vibration transmission piece 223 away from the driving assembly 220 and spaced apart from the cylindrical cover 210 .

[0165] Specifically, in the axial direction of the cylindrical cover body 210, the sealing plate 230, the vibration transmission piece 223 and the cylindrical cover body 210 are stacked in sequence, the periphery of the vibration transmission piece 223 is fixedly connected to one end face of the cylindrical cover body 210, and the sealing plate 230 is fixed to the vibration transmission piece 223 and thus connected to the cylindrical cover body 210 through the vibration transmission piece 223. Among them, the connection between the vibration transmission piece 223 and the cylindrical cover body 210 and the connection between the sealing plate 230 and the vibration transmission piece 223 are both sealed.

[0166] Of course, in other embodiments, the vibration transmission plate 223 and the sealing plate 230 can also be fixed relative to the cylindrical cover body 210 in other ways. For example, the periphery of the vibration transmission plate 223 can be directly connected to the inner wall of the cylindrical cover body 210, and the sealing plate 230 is fixedly supported on the first supporting surface 212 to cover one end of the sealing plate 230. This embodiment is not listed one by one here.

[0167] In some embodiments, Figures 8 to 9 As shown, there can be two vibration transmission plates 223 , and the two vibration transmission plates 223 can be fixedly connected to the cylindrical cover 210 respectively. The two sealing plates 230 can be arranged one by one at the side of the two vibration transmission plates 223 away from the driving assembly 220 .

[0168] Specifically, the two vibration transmission pieces 223 and the two sealing plates 230 can be arranged in sequence along the central axis direction of the cylindrical cover 210. Moreover, the two vibration transmission pieces 223 and the two sealing plates 230 can be located on both sides of the driving assembly 220, respectively. The two vibration transmission pieces 223 connect the driving assembly 220 and the cylindrical cover 210 on both sides of the driving assembly 220 to limit the driving assembly 220 on both sides of the driving assembly 220. The two sealing plates 230 can be respectively arranged on the side of the two vibration transmission pieces 223 away from the driving assembly 220 to protect the two vibration transmission pieces 223 and seal the accommodating space 211 of the cylindrical cover 210.

[0169] Providing two vibration transmission plates 223 to limit the driving assembly 220 can share the pressure caused by the vibration of the driving assembly 220, thereby increasing the service life of the vibration transmission plates 223 and further increasing the service life of the bone conduction speaker 200.

[0170] In some embodiments, Figures 8 to 9As shown, the driving assembly 220 may also include a voice coil assembly 221 and a magnet assembly 222, wherein the first of the voice coil assembly 221 and the magnet assembly 222 is arranged around the second of the voice coil assembly 221 and the magnet assembly 222, and the first of the voice coil assembly 221 and the magnet assembly 222 is fixedly connected to the cylindrical cover 210. The vibration transmission piece 223 is fixedly connected to the second of the voice coil assembly 221 and the magnet assembly 222 and the cylindrical cover 210. The vibration transmission piece 223 and the sealing plate 230 are arranged relative to each other in the direction of the central axis, and the vibration transmission piece 223 is used to elastically constrain the voice coil assembly 221 and the magnet assembly 222 to move relative to each other along the direction of the central axis of the cylindrical cover 210.

[0171] The voice coil assembly 221 is used to receive current and the current can form a current loop through the voice coil assembly 221. The magnet assembly 222 is used to interact with the current in the voice coil assembly 221 to generate vibration in the central axis direction. When vibrating, the magnet assembly 222 can directly or indirectly drive the cylindrical cover 210 to move. The magnet assembly 222 and the voice coil assembly 221 move relative to each other along the central axis direction of the cylindrical cover 210.

[0172] For example, optionally, the first of the voice coil assembly 221 and the magnet assembly 222 may be the voice coil assembly 221, and the second of the voice coil assembly 221 and the magnet assembly 222 may be the magnet assembly 222. Specifically, the voice coil assembly 221 is arranged on the inner wall of the cylindrical cover 210 and is fixedly connected to the cylindrical cover 210, the voice coil assembly 221 is arranged around the magnet assembly 222, the magnet assembly 222 is arranged in the accommodating space 211 of the cylindrical cover 210 and is spaced apart from the voice coil assembly 221, and the vibration transmission piece 223 is fixedly connected to the magnet assembly 222 and the cylindrical cover 210. The magnet assembly 222, the vibration transmission piece 223, the sealing plate 230 and the cylindrical cover 210 are arranged in sequence along the central axis direction of the cylindrical cover 210. When the magnet assembly 222 and the voice coil assembly 221 interact with each other, the magnet assembly 222 drives the cylindrical cover 210 to vibrate through the vibration transmission piece 223.

[0173] Of course, in other embodiments, the first of the voice coil assembly 221 and the magnet assembly 222 may be the magnet assembly 222, and the second of the voice coil assembly 221 and the magnet assembly 222 may be the voice coil assembly 221. Specifically, the magnet assembly 222 may be fixedly attached to the inner wall of the cylindrical cover 210, and the magnet assembly 222 is arranged to surround the voice coil assembly 221, and the voice coil assembly 221 is connected to the cylindrical cover 210 through the vibration transmission sheet 223. Among them, the magnet assembly 222 and the voice coil assembly 221 interact with each other, and the magnet assembly 222 can directly drive the cylindrical cover 210 to vibrate, and the cylindrical cover 210 thereby drives the housing assembly 100 to vibrate.

[0174] The vibration transmission piece 223 is provided to elastically constrain the voice coil assembly 221 and the magnet assembly 222 to perform relative movement, so that the magnet assembly 222 is always located within the surround of the voice coil assembly 221, thereby maintaining the interaction between the magnetic field and the current between the voice coil assembly 221 and the magnet assembly 222, so as to maintain the vibration of the magnet assembly 222, thereby enabling the bone conduction speaker 200 to achieve the bone conduction function for a long time.

[0175] In some embodiments, Fig.16 As shown, the vibration transmission plate 223 can be located between the second one of the voice coil assembly 221 and the magnet assembly 222 and the corresponding sealing plate 230. The sealing plate 230 is used to rigidly constrain the deformation amplitude of the vibration transmission plate 223 along the central axis direction, thereby rigidly constraining the relative movement range of the voice coil assembly 221 and the magnet assembly 222.

[0176] Specifically, during the interaction between the voice coil assembly 221 and the magnet assembly 222, the second one of the voice coil assembly 221 and the magnet assembly 222 will affect the vibration transmission plate 223 and cause the vibration transmission plate 223 to undergo elastic deformation. Therefore, a sealing plate 230 is provided on the side of the vibration transmission plate 223 facing away from the voice coil assembly 221 and the magnet assembly 222 to rigidly constrain the deformation amplitude of the vibration transmission plate 223. This can prevent the vibration transmission plate 223 from deforming beyond its elastic limit during the deformation process, thereby causing the vibration transmission plate 223 to transition from elastic deformation to plastic deformation, thereby protecting the vibration transmission plate 223.

[0177] The sealing plate 230 can determine its fixed position according to the relative motion range of the voice coil assembly 221 and the magnet assembly 222 and the elastic limit of the vibration transmission plate 223, so that the sealing plate 230 can constrain the relative motion range of the voice coil assembly 221 and the magnet assembly 222, so that the sealing plate 230 and the vibration transmission plate 223 can jointly constrain the relative motion range of the voice coil assembly 221 and the magnet assembly 222 within the maximum relative motion range, thereby protecting the vibration transmission plate 223, the voice coil assembly 221 and the magnet assembly 222, and also improving the vibration effect of the bone conduction speaker 200.

[0178] In some embodiments, Figure 8 as well as Fig.16 As shown, the vibration transmission plate 223 may include a central fixing portion 2231, an annular fixing portion 2232 surrounding the periphery of the central fixing portion 2231, and a connecting rod assembly 2233 connected between the central fixing portion 2231 and the annular fixing portion 2232, the annular fixing portion 2232 is connected to the cylindrical cover 210, and the central fixing portion 2231 is connected to the second of the voice coil assembly 221 and the magnet assembly 222.

[0179] The connecting rod assembly 2233 can be elastically deformed, and when current passes through the voice coil assembly 221, the second one of the voice coil assembly 221 and the magnet assembly 222 can be elastically constrained. The elastic constraint can be understood as the second one of the voice coil assembly 221 and the magnet assembly 222 moving relative to each other within the relative motion range allowed by the elastic deformation of the connecting rod assembly 2233. The connecting rod assembly 2233 can limit the relative motion range between the voice coil assembly 221 and the magnet assembly 222 along the central axis, and can also reset the voice coil assembly 221 and the magnet assembly 222 through elastic recovery after the voice coil assembly 221 and the magnet assembly 222 achieve relative motion.

[0180] The connecting rod assembly 2233 of the vibration transmission piece 223 has excellent elastic deformation capability, but it is also connected to the inside of the cylindrical cover 210, and cannot be in a closed space with the cylindrical cover 210. Instead, the hollow on the vibration transmission piece 223 can be blocked by the sealing plate 230 to form a sealed space with the cylindrical cover 210. Such a setting can improve the magnetic circuit performance of the bone conduction speaker 10 and improve the sound quality effect.

[0181] In the natural state, the central fixing portion 2231 and the corresponding sealing plate 230 have a gap in the central axis direction. The natural state refers to when the current does not pass through the voice coil assembly 221, that is, when the voice coil assembly 221 and the magnet assembly 222 are relatively stationary. When the voice coil assembly 221 and the magnet assembly 222 are relatively stationary, a gap is set between the central fixing portion 2231 and the corresponding sealing plate 230 in the central axis direction, so that the second of the voice coil assembly 221 and the magnet assembly 222 can have a space to vibrate relative to the cylindrical cover 210 in the central axis direction, so that bone conduction can be performed on the user's body through the cylindrical cover 210 and the shell assembly 100 in the central axis direction.

[0182] Optionally, in a natural state, the central fixing portion 2231 is closer to the second one of the voice coil assembly 221 and the magnet assembly 222 than the annular fixing portion 2232 in the central axis direction.

[0183] In some embodiments, the distance between the central fixing portion 2231 and the corresponding sealing plate 230 ranges from 0.005 to 0.8 mm.

[0184] Among them, a distance is defined between the central fixing portion 2231 and the corresponding sealing plate 230, so that the driving component 220 can drive the central fixing portion 2231 to vibrate within this distance, thereby driving the cylindrical cover body 210 to vibrate.

[0185] Optionally, the distance between the central fixing portion 2231 and the corresponding sealing plate 230 may be the distance between the center point of the central fixing portion 2231 and the center point of the sealing plate 230, such as Fig. 9 As shown, the distance between the central fixing portion 2231 and the corresponding sealing plate 230 can be shown as the distance H in the figure. For example, the distance between the center point of the central fixing portion 2231 and the center point of the sealing plate 230 can be 0.2mm, 0.5mm or 0.7mm. By setting the distance between the central fixing portion 2231 and the corresponding sealing plate 230 in this way, the sealing plate 230 can limit the vibration of the central fixing portion 2231 and the driving assembly 220, and prevent the vibration amplitude of the driving assembly 220 from being too large, causing the deformation of the connecting rod assembly 2233 to exceed its tolerance range and cause damage.

[0186] like Figure 8 and Fig. 9 As shown, the magnet assembly 222 may also include a magnet 2221 and two magnetic conductive plates 2222, and the two magnetic conductive plates 2222 are respectively arranged on two side surfaces of the magnet 2221 that are arranged opposite to each other along the central axis. The magnetic conductive plate 2222 has a protrusion 2201 protruding toward the central fixing portion 2231, and the protrusion 2201 is fixedly connected to the central fixing portion 2231.

[0187] The magnetic conductive plate 2222 is used to constrain the direction of the magnetic field of the magnet 2221 on the two side end surfaces of the magnet 2221 that are arranged opposite to each other along the central axis direction, thereby enhancing the effect between the magnet 2221 and the voice coil 2211 .

[0188] The two protrusions 2201 of the two magnetic conductive plates 2222 protrude toward the central fixing portions 2231 of the two vibration-transmitting plates 223 opposite to the two magnetic conductive plates 2222, that is, the directions of the two protrusions 2201 are opposite. By setting the protrusions 2201 to be fixedly connected with the central fixing portions 2231, the two magnetic conductive plates 2222 and the two vibration-transmitting plates 223 can be fixedly connected more stably, and the connection parts between the magnetic conductive plates 2222 and the vibration-transmitting plates 223 can not occupy too much space of the connecting rod assembly 2233, so that the connecting rod assembly 2233 has enough areas to produce elastic deformation, thereby providing enough deformation space, so that the elasticity of the vibration-transmitting plate 223 is better.

[0189] In some embodiments, Figure 8 as well as Fig. 9 As shown, the voice coil assembly 221 may also include two groups of voice coils 2211 spaced apart along the central axis direction, the cylindrical cover 210 is wound around the periphery of the two groups of voice coils 2211, and the two magnetic conductive plates 2222 are respectively arranged to at least partially overlap with the two groups of voice coils 2211 along the radial projection of the bone conduction speaker 200, and the power supply directions of the two groups of voice coils 2211 are opposite to each other.

[0190] The radial direction of the bone conduction speaker 200 is as follows: Fig. 9 As shown by the Y arrow in the middle. The two magnetic conductive plates 2222 are arranged to overlap at least partially with the two groups of voice coils 2211 along the radial projection of the bone conduction speaker 200, which can strengthen the interaction between the two magnetic conductive plates 2222 and the magnet 2221 and the two voice coils 2211, making the magnet assembly 222 more sensitive. In addition, the power supply directions of the two voice coils 2211 are opposite to each other, so as to ensure that the two voice coils 2211 are subjected to the same force direction under the interaction of the same magnet 2221, so that the magnet 2221 can move in one direction under the action of the two voice coils 2211 and the magnetic field, and the magnet 2221 can vibrate in the direction of the central axis by changing the current direction of the two voice coils 2211.

[0191] In some embodiments, the accommodation space 211 is filled with magnetic fluid, and the magnetic fluid occupies at least a portion of the accommodation space 211 .

[0192] Among them, magnetic fluid is also called magnetic liquid, ferromagnetic fluid or magnetic fluid. Magnetic fluid has the fluidity of liquid and the magnetism of solid magnetic material. Magnetic fluid has better magnetic permeability than air, and can increase the magnetic field effect of magnet assembly 222 to make the vibration of magnet assembly 222 more sensitive. In addition, the presence of magnetic fluid can also reduce the resistance of relative movement between voice coil assembly 221 and magnet assembly 222, thereby improving the vibration effect, which can effectively improve the sound quality, thereby improving the bone conduction effect of bone conduction speaker 200 and improving the sound quality effect of speaker assembly 10.

[0193] Optionally, the magnetic fluid may not fill up the accommodating space 211 . Such a configuration can reduce fluid resistance and improve the bone conduction effect of the bone conduction speaker 200 .

[0194] In some embodiments, when the bone conduction speaker 200 vibrates on its axis, it will drive other structural components to vibrate, and the air conduction speaker 300 and the housing assembly 100 become vibration loads. In the related art, the air conduction speaker 300 is usually arranged beside the axis of the bone conduction speaker 200 (for example, the air conduction speaker 300 is often arranged in the radial direction of the bone conduction speaker 200 perpendicular to its axis). In this case, the mass of the air conduction speaker 300 will bias the vibration of the bone conduction speaker 200, so that the speaker assembly 10 generates two torques in different directions, weakening the vibration of the bone conduction speaker 200 on the axis, reducing the volume of the bone conduction component of the earphone 1, and affecting the sound quality performance of the speaker assembly 10.

[0195] In order to solve the above problems, the following embodiment exemplarily describes the position, structure, etc. of the bone conduction speaker 200 and the air conduction speaker 300 of the speaker assembly 10.

[0196] like Fig.17 as well as Fig.18 As shown, as mentioned above, the bone conduction core module 200 and the air conduction core module 300 are arranged in the housing assembly 100. The bone conduction core module 200 can also be called a bone conduction speaker 200, which is used to conduct sound to the user through bone conduction vibration. The air conduction core module 300 can be called an air conduction speaker 300, which is used to conduct sound to the user's ear canal through the principle of air vibration.

[0197] Optionally, the housing assembly 100 may be provided with an accommodation space 110. The bone conduction core module 200 may be disposed in the accommodation space 110 and vibrate in a first vibration direction. The air conduction core module 300 is disposed in the accommodation space 110 and is arranged along the first vibration direction with the bone conduction core module 200 and is opposite to each other. Specifically, the air conduction core module 300 and the bone conduction core module 200 are opposite to each other, which means that on a reference horizontal plane perpendicular to the first vibration direction, the projections of the air conduction core module 300 and the bone conduction core module 200 have an overlapping area.

[0198] The first vibration direction of the bone conduction core module 200 may be consistent with the central axis direction of the bone conduction core module 200. Fig.18 As shown by the arrow X in the middle.

[0199] The air conduction core module 300 is arranged in the first vibration direction of the bone conduction core module 200, so that the mass of the air conduction core module 300 can be more concentrated on the axis of the bone conduction core module 200. When the bone conduction core module 200 vibrates along the first vibration direction, the bias effect of the air conduction core module 300 on the vibration of the bone conduction core module 200 is weakened, so that the bone conduction core module 200 can better drive the shell assembly 100 to vibrate in the first vibration direction. The sound quality generated by the vibration of the bone conduction core module 200 is purer and conforms to the acoustic design principle. In this way, the influence of the mass of the air conduction core module 300 on the vibration effect of the bone conduction core module 200 is reduced, so that the bone conduction core module 200 has a better bone conduction effect, and the sound quality effect of the bone conduction component of the earphone 1 is improved.

[0200] In some embodiments, the air conduction core module 300 can generate vibrations in the second vibration direction. The angle between the first vibration direction and the second vibration direction is 70° to 100°, or 80° to 90°.

[0201] Setting the first vibration direction and the second vibration direction to be different and cross each other can reduce the mutual interference between the air conduction core module 300 and the bone conduction core module 200, so that the air conduction core module 300 has a better sound effect and the bone conduction core module 200 has a good bone conduction effect.

[0202] The angle between the first vibration direction and the second vibration direction may be 75°, 85° or 95°. For example, the first vibration direction and the second vibration direction may be perpendicular to each other, that is, the angle between the first vibration direction and the second vibration direction may be 90°. The second vibration direction may be the axial direction of the air conduction core module 300. Fig.18 Indicated by the Y arrow.

[0203] Such an arrangement can greatly reduce the mutual influence between the air conduction core module 300 and the bone conduction core module 200, so that the vibration of each can be less easily affected by the vibration of the other, thereby improving the sound quality of the earphone 1.

[0204] In some embodiments, Figure 17 to Figure 18 As shown, the housing assembly 100 may be provided with a first side surface 107, a second side surface 108 and a vibration transmission surface 109 (i.e., the face-attaching side mentioned above), the first side surface 107, the second side surface 108 and the vibration transmission surface 109 may not be coplanar with each other, and the first side surface 107 and the second side surface 108 are spaced apart in a direction perpendicular to the first vibration direction. The housing assembly 100 may be provided with a sound outlet hole 114 penetrating the first side surface 107 and communicating with the accommodating space 110, and a pressure relief hole 115 penetrating the second side surface 108 and communicating with the accommodating space 110.

[0205] The sound outlet 114 and the pressure relief hole 115 are respectively used to conduct at least part of the sound waves generated by the air conduction movement module 300 to the external environment. The difference is that the sound outlet 114 is usually arranged facing or close to the user's ear, so as to conduct part of the sound waves generated by the air conduction movement module 300 to the user's ear, and the pressure relief hole 115 is used to discharge the air in the accommodating space 110 that damps the vibration of the air conduction speaker 300, so that the accommodating space 110 achieves air pressure balance, so as to reduce the influence on the vibration effect of the air conduction movement module 300.

[0206] Disposing the sound outlet hole 114 and the pressure relief hole 115 on the first side surface 107 and the second side surface 108 respectively can relatively increase the distance between the sound outlet hole 114 and the pressure relief hole 115, thereby reducing the mutual influence, especially the interference cancellation, between the sound waves discharged from the pressure relief hole 115 and the sound waves conducted by the sound outlet hole 114, thereby improving the sound quality conducted by the sound outlet hole 114. In other embodiments, the positions of the sound outlet hole 114 and the pressure relief hole 115 on the housing assembly 100 can be swapped to adapt to the specific position of the human ear.

[0207] Optionally, the vibration transmission surface 109 may be perpendicular to the first vibration direction, and the bone conduction core module 200 transmits vibration outward through the vibration transmission surface 109. Such an arrangement can make the pressure relief hole 115, the sound outlet hole 114 and the vibration transmission surface 109 non-coplanar, so that the sound waves conducted by the sound outlet hole 114, the sound waves discharged by the pressure relief hole 115 and the vibration on the vibration transmission surface 109 are not easily interfered with each other, so that the sound outlet hole 114 and the pressure relief hole 115 can improve the sound quality effect of the speaker assembly 10.

[0208] In some embodiments, Fig.18 As shown, the air conduction core module 300 can be stacked on the bone conduction core module 200 along the first vibration direction. In other words, the air conduction core module 300 and the bone conduction core module 200 are stacked along the first vibration direction. Optionally, the air conduction core module 300 is fixedly connected to the bone conduction core module 200.

[0209] By fixing the air conduction movement module 300 to the bone conduction movement module 200 along the first vibration direction, the bone conduction movement module 200 can drive the air conduction movement module 300 to vibrate, thereby reducing the influence of the counterweight of the air conduction movement module 300 on the vibration of the bone conduction movement module 200, thereby ensuring the bone conduction effect of the speaker assembly 10.

[0210] In some embodiments, Fig.19 As shown, an elastic buffer 600 may be provided between the air conduction core module 300 and the bone conduction core module 200. The elastic buffer 600 may be an elastic colloid (such as silicone, rubber, etc.), a spring, an air bag, or a magnetic fluid. Such a setting can reduce the vibration influence and restriction of the air conduction core module 300 on the bone conduction core module 200, so that the bone conduction core module 200 can vibrate more freely and have a better vibration effect. On the other hand, the elastic buffer 600 can protect the air conduction core module 300.

[0211] In some embodiments, at least one of the air conduction core module 300 and the bone conduction core module 200 is relatively fixed to the housing assembly 100. Optionally, the air conduction core module 300 and the bone conduction core module 200 are respectively fixedly connected to the housing assembly 100. Such an arrangement can improve the working stability of the bone conduction core module 200 and the air conduction core module 300.

[0212] In some embodiments, Fig. 20As shown, the air conduction core module 300 and the bone conduction core module 200 can be spaced apart in the first vibration direction. In this way, on the one hand, the weight of the air conduction core module 300 can reduce the influence of the bias on the vibration of the bone conduction core module 200, and on the other hand, the spacing between the two can also reduce the mutual influence between the vibrations of the two and reduce the possibility of vibration interference. Optionally, the air conduction core module 300 can be fixedly connected to the housing assembly 100, and when the bone conduction core module 200 drives the housing assembly 100 to vibrate, the housing assembly 100 further drives the air conduction core module 300 to vibrate.

[0213] Optionally, the housing assembly 100 may be provided with a partition wall 150, and the accommodating space 110 may include a first accommodating cavity 111 and a second accommodating cavity 112 separated by the partition wall 150. The bone conduction core module 200 is provided in the first accommodating cavity 111, and the air conduction core module 300 is provided in the second accommodating cavity 112.

[0214] Alternatively, if Fig.19 As shown, the housing assembly 100 includes a first housing 120, a second housing 130 and a third housing 140, wherein the second housing 130 is engaged with the first housing 120 and cooperates with each other to form a first accommodating cavity 111, and the third housing 140 is engaged with the first housing 120 and the second housing 130 respectively and cooperates with the first housing 120 to form a second accommodating cavity 112. Through the above arrangement, the speaker assembly 10 can be easily installed and disassembled.

[0215] Since the bone conduction core module 200 requires a tightly sealed environment to ensure the bone conduction effect, arranging the bone conduction core module 200 and the air conduction core module 300 in different cavities can improve the bone conduction effect of the bone conduction core module 200. Optionally, the first accommodating cavity 111 can be a tightly sealed setting so that the first accommodating cavity 111 has better airtightness.

[0216] Optionally, the shape and size of the first accommodating cavity 111 match the shape and size of the bone conduction core module 200, so that the size of the speaker assembly 10 can be reduced, and it is also convenient for the bone conduction core module 200 to drive the shell assembly 100 to vibrate and transmit bone conduction to the user's body.

[0217] In some embodiments, Fig. 20 As shown, the air conduction movement module 300 can generate vibration in the second vibration direction, and the housing assembly 100 is provided with a sound outlet 114 and a pressure relief hole 115 connected to the second accommodating chamber 112. The sound outlet 114 is used to conduct part of the sound waves generated by the air conduction speaker 300 to the outside of the speaker assembly 10, and the pressure relief hole 115 is used to connect the second accommodating chamber 112 with the external environment to ensure the air pressure balance inside the second accommodating chamber 112, thereby reducing the air pressure accumulation and affecting the sound effect generated by the air conduction speaker 300.

[0218] Among them, the sound outlet hole 114 and the pressure relief hole 115 are respectively arranged on the two side walls of the shell assembly 100 separated from each other in the second vibration direction. Such an arrangement can reduce the mutual interference between the sound waves propagated by the sound outlet hole 114 and the pressure relief hole 115, thereby improving the sound quality effect of the speaker assembly 10.

[0219] In some embodiments, Fig. 20 As shown, the bone conduction core module 200 may have a first central axis X extending along the first vibration direction. The air conduction core module 300 may generate vibrations in the second vibration direction and may have a second central axis Y extending along the second vibration direction. The angle between the first central axis X and the second central axis Y may be 70° to 100°.

[0220] For example, the angle between the first central axis X and the second central axis Y may be 80°, 85°, 90°, etc. Optionally, the angle between the first central axis X and the second central axis Y may be 90°, and such a setting can reduce the mutual influence between the vibration of the bone conduction core module 200 and the vibration of the air conduction core module 300, thereby ensuring the sound quality effect of the speaker assembly 10.

[0221] In some embodiments, as shown in FIG. 20 , the second housing 130 may have a contact area 131 that contacts the user's face when the headset 1 is worn. The joint seam 132 between the first housing 120 and the second housing 130 is located outside the contact area 131. By arranging the joint seam 132 between the first housing 120 and the second housing 130 outside the contact area 131 instead of in the contact area 131, the joint seam 132 is not likely to clamp the human skin when the headset 1 is in use.

[0222] In some embodiments, the air conduction core module 300 and the bone conduction core module 200 may be arranged along the first vibration direction. Optionally, the bone conduction core module 200 and the air conduction core module 300 may have an overlapping area in their projections on a reference plane perpendicular to the first vibration direction.

[0223] like Fig.21 As shown, the projection of the bone conduction core module 200 on the reference plane perpendicular to the first vibration direction can be as shown in Fig.21 As shown in FIG. 1 , the projection of the air conduction movement module 300 on the reference plane perpendicular to the first vibration direction can be as shown in FIG. Fig.21 As shown in J, J and K have overlapping parts. Through the above arrangement, when the bone conduction core module 200 vibrates in the first vibration direction, it drives the air conduction core module 300 to vibrate together.

[0224] The structure of the bone conduction core module 200 is relatively compact, so the mass is relatively concentrated and uniform. The vibration of the air conduction core module 300 mainly comes from the diaphragm 310. The diaphragm 310 occupies a large space but has a light mass. Its mass is mainly concentrated on the side of the air conduction core module 300 that deviates from the diaphragm 310, that is, close to the magnetic circuit component 322. The volumes of the bone conduction core module 200 and the air conduction core module 300 are specifically designed according to acoustic requirements. Therefore, the overlapping area of ​​the bone conduction core module 200 and the air conduction core module 300 perpendicular to the first vibration direction is designed as follows:

[0225] Optionally, the ratio of the overlapped area to the projected area of ​​the air conduction core module 300 on the reference plane may be greater than 20%, or greater than 40%, or greater than 60%. For example, the ratio of the overlapped area to the projected area of ​​the air conduction core module 300 on the reference plane may be 25%, 45%, 50% or 100%.

[0226] Optionally, the ratio of the overlapped area to the projected area of ​​the bone conduction core module 200 on the reference plane is greater than 20%, or greater than 40%, or greater than 60%. For example, the ratio of the overlapped area to the projected area of ​​the bone conduction core module 200 on the reference plane may be 25%, 45%, 50% or 100%.

[0227] Such arrangement of the air conduction movement module 300 and the bone conduction movement module 200 can effectively make most of the weight of the air conduction movement module 300 fall on the bone conduction movement module 200 in the first vibration direction, thereby reducing the influence of the air conduction movement module 300 on the vibration of the bone conduction movement module 200, thereby improving the vibration effect of the bone conduction movement module 200 and enhancing the bone conduction sound quality effect of the bone conduction movement module 200.

[0228] In some embodiments, Fig.21 As shown, the distance between the projection of the center of mass of the bone conduction core module 200 on the reference plane perpendicular to the first vibration direction and the projection of the center of mass of the air conduction core module 300 on the reference plane can be less than 0.5 mm. Fig. 20 As shown at point O, the center of mass of the air conduction movement module 300 is as follows Fig. 20 As shown in the middle Q point.

[0229] In the direction perpendicular to the first vibration direction, the smaller the distance between the center of mass of the bone conduction movement module 200 and the center of mass of the air conduction movement module 300, the less the vibration of the bone conduction movement module 200 is affected by the weight bias of the air conduction movement module 300, and the better the vibration effect and the better the sound quality effect.

[0230] Optionally, the distance may be 0 to 0.4 mm, or 0 to 0.2 mm. Fig. 20As shown, the distance between the center of mass of the bone conduction core module 200 and the center of mass of the air conduction core module 300 can be 0 mm. That is, the center of mass of the air conduction core module 300 and the center of mass of the bone conduction core module 200 are both located in the direction of the first vibration direction. In other words, on the reference plane perpendicular to the first vibration direction, the center of mass of the air conduction core module 300 and the center of mass of the bone conduction core module 200 completely overlap. Therefore, by setting the distance between the two in this way, the different moments generated by the bone conduction core module 200 and the air conduction core module 300 due to vibration can be reduced, so that the bone conduction core module can have a better bone conduction effect, and the speaker assembly 10 can have a better sound quality effect.

[0231] Of course, in other embodiments, on the reference plane perpendicular to the first vibration direction, the distance between the projection of the center of mass of the air conduction core module 300 and the projection of the center of mass of the bone conduction core module 200 can also be 0.1 mm, 0.25 mm, 0.3 mm, etc., which will not be listed one by one in this embodiment.

[0232] Alternatively, the bone conduction core module 200 may have a first central axis X, and the first vibration direction is the direction of the first central axis X. The distance between the center of mass of the air conduction core module 300 and the first central axis X is less than or equal to 0.5 mm. Similarly, the closer the center of mass of the air conduction core module 300 is to the first central axis X, the smaller the influence of the air conduction core module 300 on the vibration of the bone conduction core module 200.

[0233] For example, optionally, Fig. 20 As shown, the distance between the center of mass of the air conduction core module 300 and the first central axis X can be equal to 0 mm. Setting the distance between the two in this way can also facilitate the bone conduction core module 200 to drive the air conduction core module 300 to vibrate along the direction of the first central axis X, so that the bone conduction speaker 200 can have a better bone conduction effect, and the speaker assembly 10 can have a better sound quality effect.

[0234] Similarly, in other embodiments, the distance between the center of mass of the air conduction core module 300 and the first central axis X may also be 0.1 mm, 0.2 mm, 0.3 mm, etc., which will not be listed in detail in this embodiment.

[0235] In some embodiments, Fig.21 As shown, the bone conduction core module 200 can be configured as a closed structure, and the interior of the bone conduction core module 200 and the accommodating space 110 can be isolated from each other.

[0236] Alternatively, if Figure 8 as well as Fig. 9As shown, the bone conduction core module 200 may include a cylindrical cover 210, a drive assembly 220 and two sealing plates 230. The cylindrical cover 210 is fixedly connected to the housing assembly 100, and the drive assembly 220 is disposed in the cylindrical cover 210. The drive assembly 220 is used to drive the cylindrical cover 210 to vibrate, thereby driving the housing assembly 100 to vibrate. The two sealing plates 230 are respectively disposed at both ends of the cylindrical cover 210, and block the cylindrical cover 210 to form a closed structure.

[0237] The vibration of the driving component 220 in the sealed cylindrical cover 210 can make the driving component 220 less susceptible to air resistance and other factors during the vibration process, thereby ensuring that the bone conduction core module 200 has a good bone conduction effect. In addition, when the earphone 1 is dropped and hit, the closed cylindrical cover 210 can also prevent the driving component 220 from falling out of the cylindrical cover 210 and causing damage to the internal structure, thereby improving the structural stability of the bone conduction core module 200.

[0238] Optionally, the bone conduction core module 200 may include a vibration transmission piece 223, the driving assembly 220 includes a voice coil assembly 221 and a magnet assembly 222, the voice coil assembly 221 is sleeved on the magnet assembly 222, the vibration transmission piece 223 is fixedly connected to the cylindrical cover 210 and the magnet assembly 222, and the voice coil assembly 221 is fixedly connected to the cylindrical cover 210. The voice coil assembly 221 is used to receive electrical signals and interact with the magnet assembly 222 to make the magnet assembly 222 vibrate, the magnet assembly 222 is used to drive the cylindrical cover 210 to vibrate after interacting with the voice coil assembly 221, and the vibration transmission piece 223 is used to limit the position of the magnet assembly 222. Specifically, the two sealing plates 230 cover the cylindrical cover 210 to form a closed structure, which can better constrain the direction of the magnetic field, make the vibration of the magnet assembly 222 more sensitive, and prevent the vibration transmission piece 223 and the magnet assembly 222 from falling out of the cylindrical cover 210.

[0239] In some embodiments, the magnetic fluid may occupy at least part of the internal space of the cylindrical cover 210. Magnetic fluid is also called magnetic liquid, ferromagnetic fluid or magnetic fluid. Magnetic fluid has the fluidity of liquid and the magnetism of solid magnetic material. Magnetic fluid has better magnetic permeability than air, and can increase the magnetic field effect of the magnet assembly 222 to make the vibration of the magnet assembly 222 more sensitive, thereby improving the bone conduction effect of the bone conduction core module 200 and improving the sound quality of the speaker assembly 10.

[0240] Optionally, the magnetic fluid may not fill up the inner space of the cylindrical cover 210 . Such a configuration can reduce fluid resistance and improve the bone conduction effect of the bone conduction core module 200 .

[0241] Based on the above embodiments, the earphone 1 may include the speaker assembly 10 as described in the above embodiments.

[0242] In summary, the present application arranges the air conduction movement module 300 and the bone conduction movement module 200 in the first vibration direction of the bone conduction movement module 200 and the air conduction movement module 300 and the bone conduction movement module 200 are arranged along the first vibration direction and opposite to each other, so that the mass of the air conduction movement module 300 is more concentrated on the axis of the bone conduction movement module 200, so that the bias effect of the air conduction movement module 300 on the vibration of the bone conduction movement module 200 is weakened, so that the bone conduction movement module 200 can better drive the air conduction movement module 300 to move when vibrating, and reduce the influence of the mass of the air conduction movement module 300 on the vibration effect of the bone conduction movement module 200, which can increase the volume, thereby improving the bone conduction effect of the speaker assembly, so as to improve the sound quality effect of the speaker assembly 10.

[0243] The above descriptions 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 speaker assembly, characterized in that: include: The housing assembly is provided with a receiving space; A bone conduction core module is disposed in the accommodating space and vibrates in a first vibration direction; The air conduction core module is disposed in the accommodating space, and is arranged along the first vibration direction with the bone conduction core module and is opposite to each other.

2. The loudspeaker assembly according to claim 1, characterized in that The projections of the bone conduction core module and the air conduction core module on a reference plane perpendicular to the first vibration direction have an overlapping area.

3. The loudspeaker assembly according to claim 2, characterized in that The ratio between the overlapping area and the projected area of ​​the air conduction core module on the reference plane is greater than 20%, or greater than 40, or greater than 60%; and / or, The ratio of the overlapping area to the projection area of ​​the bone conduction core module on the reference plane is greater than 20%, or greater than 40, or greater than 60%.

4. The loudspeaker assembly according to any one of claims 1 to 3, characterized in that: The air conduction core module is stacked on the bone conduction core module along the first vibration direction.

5. The loudspeaker assembly according to claim 4, characterized in that The air conduction core module is fixedly connected to the bone conduction core module.

6. The loudspeaker assembly according to claim 4, characterized in that An elastic buffer is arranged between the air conduction core module and the bone conduction core module.

7. The loudspeaker assembly according to any one of claims 1 to 3, characterized in that: The air conduction core module is spaced apart from the bone conduction core module in the first vibration direction.

8. The loudspeaker assembly according to claim 7, characterized in that The shell assembly is provided with a partition wall, and the accommodating space includes a first accommodating cavity and a second accommodating cavity separated by the partition wall; the bone conduction core module is arranged in the first accommodating cavity, and the air conduction core module is arranged in the second accommodating cavity.

9. The loudspeaker assembly according to claim 8, characterized in that The shell assembly includes a first shell, a second shell and a third shell, wherein the second shell is engaged with the first shell and cooperates with each other to form the first accommodating cavity, and the third shell is engaged with the first shell and the second shell respectively and cooperates with the first shell to form the second accommodating cavity.

10. The loudspeaker assembly according to claim 9, characterized in that The bone conduction core module has a first central axis extending along the first vibration direction; the air conduction core module generates vibration in the second vibration direction, and has a second central axis extending along the second vibration direction; the angle between the first central axis and the second central axis is 70° to 100°; the third shell is located on the side of the first shell away from the second shell in the first vibration direction; the cross-sectional dimension of the third shell perpendicular to the first vibration direction gradually decreases or decreases in a step-like manner in the direction away from the second shell.

11. The loudspeaker assembly according to claim 9, characterized in that: The second shell has a contact area that contacts the user's face in a wearing state; and the joint seam between the first shell and the second shell is located outside the contact area.

12. The loudspeaker assembly according to claim 8, characterized in that The air conduction movement module generates vibration in a second vibration direction, and the shell component is provided with a sound outlet hole and a pressure relief hole connected to the second accommodating cavity, and the sound outlet hole and the pressure relief hole are respectively arranged on two side walls of the shell component spaced from each other in the second vibration direction.

13. The loudspeaker assembly according to claim 8, characterized in that The shape and size of the first accommodating cavity match the shape and size of the bone conduction core module.

14. The loudspeaker assembly according to any one of claims 1 to 3, characterized in that: At least one of the air conduction core module and the bone conduction core module is relatively fixed to the shell assembly.

15. The loudspeaker assembly according to claim 1, wherein: The bone conduction core module is configured as a closed structure, and the interior of the bone conduction core module is isolated from the accommodating space.

16. The loudspeaker assembly according to claim 15, characterized in that The bone conduction machine core module includes a cylindrical cover, a drive assembly and two sealing plates; the cylindrical cover is fixedly connected to the shell assembly, and the drive assembly is arranged in the cylindrical cover, and the drive assembly is used to drive the cylindrical cover to vibrate, thereby driving the shell assembly to vibrate; the two sealing plates are respectively arranged at both ends of the cylindrical cover, and seal the cylindrical cover to form the closed structure.

17. The loudspeaker assembly according to claim 16, wherein: The bone conduction core module includes a vibration transmission plate, the driving assembly includes a voice coil assembly and a magnet assembly, the voice coil assembly is sleeved on the magnet assembly, the vibration transmission plate is fixedly connected to the cylindrical cover and the magnet assembly, and the voice coil assembly is fixedly connected to the cylindrical cover.

18. The loudspeaker assembly according to claim 13, wherein: The inner space of the cylindrical cover is filled with magnetic fluid, and the magnetic fluid occupies at least a portion of the inner space of the cylindrical cover.

19. The loudspeaker assembly according to claim 1, wherein: The distance between the projection of the center of mass of the bone conduction core module on a reference plane perpendicular to the first vibration direction and the projection of the center of mass of the air conduction core module on the reference plane is less than 0.5 mm; or, the bone conduction core module has a first central axis extending along the first vibration direction; the distance between the center of mass of the air conduction core module and the first central axis is less than or equal to 0.5 mm.

20. The loudspeaker assembly according to claim 19, wherein: The distance is 0 to 0.4 mm, or 0 to 0.2 mm.

21. The loudspeaker assembly according to claim 1, wherein: The air conduction core module generates vibration in a second vibration direction; the angle between the first vibration direction and the second vibration direction is 70° to 100°, or 80° to 90°.

22. The loudspeaker assembly according to claim 1, wherein: The shell component is provided with a first side surface, a second side surface and a vibration transmission surface. The first side surface, the second side surface and the vibration transmission surface are not coplanar with each other. The first side surface and the second side surface are spaced apart in a direction perpendicular to the first vibration direction. The shell component is provided with a sound outlet hole penetrating the first side surface and connected to the accommodating space, and a pressure relief hole penetrating the second side surface and connected to the accommodating space; the vibration transmission surface is perpendicular to the first vibration direction, and the bone conduction core module transmits vibration outward through the vibration transmission surface.

23. A speaker assembly, characterized in that: include: The housing assembly is provided with a receiving space; A bone conduction core module is disposed in the accommodating space and vibrates in a first vibration direction; An air conduction movement module is arranged in the accommodating space; The air conduction core module and the bone conduction core module are arranged along the first vibration direction, and the projections of the bone conduction core module and the air conduction core module on a reference plane perpendicular to the first vibration direction have an overlapping area; the ratio of the overlapping area to the projection area of ​​the air conduction core module or the bone conduction core module on the reference plane is greater than 20%, or greater than 40, or greater than 60%.

24. A headset, characterized in that: Comprising a speaker assembly as described in any one of claims 1-23.

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