Speaker Assembly and Earphone

Abstract

The present application discloses a speaker assembly and an earphone, the earphone including a housing assembly, a bone conduction core module, and an air conduction core module, the housing assembly forming an accommodation space. The bone conduction core module is installed in the accommodation space and vibrates in a first vibration direction, and the air conduction core module is installed in the accommodation space and is aligned with and faces the bone conduction core module along the first vibration direction. In this manner, the present application can reduce the influence of the air conduction core module on the vibration effect of the bone conduction core module, increase the volume, and improve the bone conduction effect of the speaker assembly, thereby improving the sound quality effect of the speaker assembly.

Description

[Technical Field]

[0001] The present application relates to the technical field of electronic devices, and more particularly to speaker assemblies and earphones. [Background technology]

[0002] Earphones are an essential social and entertainment tool in people's daily lives, and are now widely used in people's daily lives, and people's requirements for electronic devices are also becoming increasingly higher. Currently, earphones that combine air conduction technology and bone conduction technology can provide better sound quality and usage experience, so earphones that combine both air conduction and bone conduction technologies are becoming increasingly popular.

[0003] In bone conduction technology, earphones must be vibrated to transmit vibration signals to the body. When the bone conduction speaker vibrates along its axis, it vibrates the housing assembly, causing a vibration load on the air conduction speaker and the housing assembly. The air conduction speaker is usually installed next to the axis of the bone conduction speaker. In this case, the mass of the air conduction speaker biases the vibration of the bone conduction speaker, generating moments in two different directions on the speaker, weakening the vibration on the axis of the bone conduction speaker and reducing the volume of the bone conduction component of the earphone, thereby lowering the volume of the earphone and affecting the sound quality of the earphone. Summary of the Invention [Problem to be solved by the invention]

[0004] The present application provides a speaker assembly and an earphone, which can reduce the influence of the air conduction core module on the vibration effect of the bone conduction core module, increase the volume, and improve the bone conduction effect of the speaker assembly, thereby improving the sound quality effect of the speaker assembly. [Means for solving the problem]

[0005] To solve the above technical problems, one technical means used 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.

[0006] The housing assembly has an accommodation space, the bone conduction core module is installed in the accommodation space and vibrates in a first vibration direction, and the air conduction core module is installed in the accommodation space and is aligned with and faces the bone conduction core module along the first vibration direction.

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

[0008] In some embodiments, the area ratio between the overlapping region and the projection of the air conduction core module onto the reference plane is greater than 20%, greater than 40%, or greater than 60%, and / or the area ratio between the overlapping region and the projection of the bone conduction core module onto the reference plane is greater than 20%, greater than 40%, or greater than 60%.

[0009] In some embodiments, the air-conduction core module is positioned to overlap the bone-conduction core module along the first vibration direction.

[0010] In some embodiments, the air-conducting core module is fixedly connected to the bone-conducting core module.

[0011] In some embodiments, an elastic buffer member is disposed between the air-conducting core module and the bone-conducting core module.

[0012] In some embodiments, the air conduction core module is spaced apart from the bone conduction core module in the first vibration direction.

[0013] In some embodiments, a partition wall is installed in the housing assembly, and the accommodation space includes a first accommodation cavity and a second accommodation cavity separated by the partition wall, and the bone conduction core module is installed in the first accommodation cavity, and the air conduction core module is installed in the second accommodation cavity.

[0014] In some embodiments, the housing assembly includes a first housing, a second housing, and a third housing, the second housing and the first housing being joined together and cooperating with each other to form a first accommodating cavity, and the third housing being joined to the first housing and the second housing, respectively, and cooperating with the first housing to form a second accommodating cavity.

[0015] In some embodiments, the bone-conduction core module has a first central axis extending along a first vibration direction, and the air-conduction core module vibrates in a 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 housing is located on the side of the first housing that is away from the second housing in the first vibration direction, and the cross-sectional dimension of the third housing perpendicular to the first vibration direction gradually decreases or decreases in steps in the direction away from the second housing.

[0016] In some embodiments, the second housing has a contact area that contacts the user's face in the worn state, and the seam between the first and second housings is located outside the contact area.

[0017] In some embodiments, the air-conducting core module vibrates in a second vibration direction, and the housing assembly is formed with sound emission holes and decompression holes communicating with the second accommodating cavity, and the sound emission holes and decompression holes are respectively installed on two side walls spaced apart from each other in the second vibration direction of the housing assembly.

[0018] In some embodiments, the shape and dimensions of the first receiving cavity match the shape and dimensions of the bone conduction core module.

[0019] In some embodiments, at least one of the air-conducting core module and the bone-conducting core module is fixed relative to the housing assembly.

[0020] In some embodiments, the bone conduction core module is installed as a sealed structure, and the interior of the bone conduction core module and the storage space are separated from each other.

[0021] 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 installed in the cylindrical cover, and the drive assembly vibrates the cylindrical cover and further vibrates the housing assembly. The two sealing plates are installed at both ends of the cylindrical cover, respectively, and close the cylindrical cover to form a sealed structure.

[0022] In some embodiments, the bone conduction core module includes a vibration transmission sheet, the drive assembly includes a voice coil assembly and a magnet assembly, the voice coil assembly is fitted into the magnet assembly, the vibration transmission sheet fixedly connects the cylindrical cover and the magnet assembly, and the voice coil assembly is fixedly connected to the cylindrical cover.

[0023] In some embodiments, the interior space of the cylindrical cover is filled with a magnetic fluid, and the magnetic fluid occupies at least a portion of the interior space of the cylindrical cover.

[0024] In some embodiments, the distance between the projection of the center of mass of the bone conduction core module onto a reference plane perpendicular to the first vibration direction and the projection of the center of mass of the air conduction core module onto 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 0.5 mm or less.

[0025] In some embodiments, the distance is between 0 and 0.4 mm or between 0 and 0.2 mm.

[0026] In some embodiments, the air conducting core module vibrates in a second vibration direction, and the angle between the first vibration direction and the second vibration direction is between 70° and 100° or between 80° and 90°.

[0027] In some embodiments, the housing assembly has 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 flush with each other, the first side surface and the second side surface are spaced apart in a direction perpendicular to the first vibration direction, and the housing assembly is formed with a sound emission hole penetrating the first side surface and communicating with the accommodation space, and a decompression hole penetrating the second side surface and communicating with the accommodation space. The vibration transmission surfaces are perpendicular to the first vibration direction, and the bone conduction core module transmits vibrations to the outside via the vibration transmission surface.

[0028] Another technical solution used by the present application to solve the above technical problems is to provide a speaker assembly, the speaker assembly including a housing assembly, a bone conduction core module, and an air conduction core module. The housing assembly defines an accommodation space. The bone conduction core module is installed in the accommodation space and vibrates in a first vibration direction. The air conduction core module is installed in the accommodation space.

[0029] The air-conduction core module and the bone-conduction core module are arranged side by side along a first vibration direction, and the projections of the bone-conduction core module and the air-conduction core module onto a reference plane perpendicular to the first vibration direction have an overlapping area, and the area ratio of the overlapping area to the projection of the air-conduction core module or the bone-conduction core module onto the reference plane is greater than 20%, greater than 40%, or greater than 60%.

[0030] In order to solve the above technical problem, yet another technical means used by the present application is to provide an earphone, which includes the above speaker assembly. [Effects of the Invention]

[0031] The beneficial effects of the present application are as follows: By arranging the air-conduction core module and the bone-conduction core module in a first vibration direction of the bone-conduction core module and arranging the air-conduction core module and the bone-conduction core module side by side and facing each other along the first vibration direction, the mass of the air-conduction core module can be more concentrated on the axis of the bone-conduction core module, and the influence of the air-conduction core module on the vibration bias of the bone-conduction core module can be reduced, so that the air-conduction core module can move better when the bone-conduction core module vibrates, and the influence of the mass of the air-conduction core module on the vibration effect of the bone-conduction core module can be reduced, which can increase the volume and improve the bone conduction effect of the speaker assembly, thereby improving the sound quality effect of the speaker assembly. [Brief explanation of the drawings]

[0032] [Figure 1] 1 is a schematic diagram of the overall assembly of an earphone embodiment of the present application; FIG. [Figure 2] 1 is a schematic diagram of one three-dimensional structure of an embodiment of a speaker assembly and some ear hooks of the present application. [Figure 3a] 3 is an exploded schematic diagram of one of the speaker assembly embodiments shown in FIG. 2. FIG. [Figure 3b] 3 is another exploded schematic view of the speaker assembly embodiment shown in FIG. 2. FIG. [Figure 4] 3 is a schematic cross-sectional view of the speaker assembly embodiment shown in FIG. 2 taken along the line AA. FIG. [Figure 5a] 3 is another cross-sectional structural schematic view of the speaker assembly embodiment shown in FIG. 2 taken along the line AA. FIG. [Figure 5b] 3 is a schematic cross-sectional view of the speaker assembly embodiment shown in FIG. 2 taken along the line AA. FIG. [Figure 6] 3 is a schematic diagram of another three-dimensional structure of the speaker assembly embodiment shown in FIG. 2. FIG. [Figure 7] 3 is a schematic diagram illustrating the positional relationship between a first central axis and a second central axis in the speaker assembly embodiment shown in FIG. 2. FIG. [Figure 8] 3b is a structural exploded schematic diagram of the bone conduction speaker embodiment shown in FIG. 3a. FIG. [Figure 9] FIG. 9 is a schematic cross-sectional view of the bone conduction speaker according to the embodiment of the present invention taken along the line BB shown in FIG. 8. [Figure 10] 3b is a schematic diagram of the three-dimensional structure of the air conduction speaker embodiment shown in FIG. 3a. [Figure 11] FIG. 11 is a schematic exploded view of the structure of the air conduction speaker embodiment shown in FIG. 10. [Figure 12] 3 is yet another exploded schematic view of the speaker assembly embodiment of the present application shown in FIG. 2. FIG. [Figure 13] 13 is a schematic cross-sectional view of one embodiment of the speaker assembly shown in FIG. 12 taken along the line AA. FIG. [Figure 14] 13 is a schematic cross-sectional view of another embodiment of the speaker assembly shown in FIG. 12 taken along the line AA. FIG. [Figure 15] 13 is a schematic cross-sectional view of yet another embodiment of the speaker assembly shown in FIG. 12 taken along the line AA. FIG. [Figure 16] FIG. 9 is a schematic diagram showing the structure of a vibration transmission sheet in the embodiment of the bone conduction speaker shown in FIG. 8. [Figure 17] 1 is yet another exploded schematic view of a speaker assembly embodiment of the present application. FIG. [Figure 18] FIG. 18 is a schematic cross-sectional view of one embodiment of the speaker assembly shown in FIG. 17 taken along the line CC. [Figure 19] FIG. 18 is a schematic cross-sectional view of another embodiment of the speaker assembly shown in FIG. 17 taken along the line CC. [Figure 20] FIG. 18 is a schematic cross-sectional view of yet another embodiment of the speaker assembly shown in FIG. 17 taken along the line CC. [Figure 21] 18 is a schematic diagram of another cross-sectional structure of the speaker assembly embodiment shown in FIG. 17 along section line CC. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0033] The present application will be described in more detail below with reference to the drawings and examples. Note that the following examples are merely for the purpose of illustrating the present application and are not intended to limit the scope of the present application. Similarly, the following examples are merely some of the examples of the present application, and are not all examples. All other examples that can be obtained by a person skilled in the art without any creative effort are all included in the scope of protection of the present application.

[0034] A reference to an "embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of this application. Those skilled in the art can explicitly or implicitly understand that the embodiment described in this application can be combined with other embodiments.

[0035] As shown in FIG. 1 , the earphone 1 may include a speaker assembly 10 , an ear hook 20 , and a back hook 30 .

[0036] The speaker assembly 10 may include a speaker and a corresponding core module in which a housing, circuit components, etc. are assembled. The number of speaker assemblies 10 may be two. The two speaker assemblies 10 transmit vibrations and / or sound to the user's left and right ears, respectively. The two speaker assemblies 10 may be the same or different. For example, one speaker assembly 10 may be equipped with a microphone, while the other speaker assembly 10 may not. Of course, microphones may be equipped in both speaker assemblies 10. Also, for example, one speaker assembly 10 may be equipped with a button and a corresponding circuit board, while the other speaker assembly 10 may not be equipped 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 assemblies 10 described later in this specification will be described in detail using one of the two speaker assemblies 10 as an example.

[0037] The number of ear hooks 20 may be two, and the two ear hooks 20 may be hung on the user's left and right ears, respectively, to bring the speaker assembly 10 into close contact with the user's face. For example, a battery may be installed in one ear hook 20, and a control circuit or the like may be installed in the other ear hook 20. One end of the ear hook 20 is connected to the speaker assembly 10, and the other end is connected to the back hook 30. The ear hook 20 may also be referred to as a wearing assembly 20.

[0038] The back hook 30 can connect the two ear hooks 20, and the back hook 30 can be placed around the back of the user's neck or behind the brain, 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 can be more stably hung on the user's ears. Of course, the earphone 1 may not include the back hook 30, and the speaker assemblies 10 may be attached to the user's ears by the ear hooks 20.

[0039] In some embodiments, the earphone 1 does not include the ear hook 30, and the speaker assembly 10 may be attached to the user's ear by the ear hook 20. Alternatively, in some embodiments, the earphone 1 does not include the ear hook 20, and the speaker assembly 10 may be connected by a head-mounted or neck-mounted structure, which may place the speaker assembly 10 in close contact with the user's face or stably outside the user's ear.

[0040] The following mainly describes the structure of the speaker assembly 10 of the earphone 1 as an example.

[0041] 2 to 4, 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 have an accommodation space 110 formed therein. The air conduction speaker 300 may be installed in the accommodation space 110, and the bone conduction speaker 200 may be installed in the accommodation space 110.

[0042] The accommodation space 110 is formed in the housing assembly 100 and accommodates the air conduction speaker 300 and the bone conduction speaker 200. The accommodation space 110 may be a large space as a whole, or may be divided into two or more small spaces that may be connected or disconnected. For example, in the embodiment shown in Fig. 3a, the housing assembly 100 may be formed with a first accommodation cavity 111 and a second accommodation cavity 112, and the first accommodation cavity 111 and the second accommodation cavity 112 may be two spaces that may be connected or disconnected.

[0043] In some embodiments, as shown in FIG. 3a, the housing assembly 100 may further include a communication hole 113 that connects the first housing cavity 111 and the second housing cavity 112. In this manner, at least the first housing cavity 111, the second housing cavity 112, and the communication hole 113 may together form the housing space 110. The bone conduction speaker 200 may be installed in the first housing cavity 111 and may block the communication hole 113 so that the first housing cavity 111 and the second housing cavity 112 are separated from each other. The air conduction speaker 300 may be installed in the second housing cavity 112. In other embodiments, the communication hole 113 may not be formed between the first housing cavity 111 and the second housing cavity 112, and the housing assembly 100 itself may separate the first housing cavity 111 and the second housing cavity 112 from each other, without providing communication between them.

[0044] The air conduction speaker 300 conducts sound into the user's ear canal through air vibration, while the bone conduction speaker 200 conducts sound to the user through bone conduction vibration. The second housing cavity 112 in which the air conduction speaker 300 is located must be connected to the outside to conduct sound waves through air, and the bone conduction speaker 200 requires a highly sealed environment to ensure bone conduction. Therefore, by independently installing the bone conduction speaker 200 and the air conduction speaker 300 in two different cavities within the housing space 110, mutual interference between the bone conduction speaker 200 and the air conduction speaker 300 can be effectively reduced, thereby improving the sound quality of the earphone 1. Sealing can be understood as the airtightness of the cavity space.

[0045] Based on the above description, by providing the communication hole 113 between the first receiving cavity 111 and the second receiving cavity 112 and blocking one side of the communication hole 113 with the bone conduction speaker 200, it is possible to highly ensure the sealing of the second receiving cavity 112, expand the usable space of the first receiving cavity 111, effectively improve the convenience of assembling the air conduction speaker 300 and the reliability of its structural layout, simply and effectively expand the volume of the acoustic cavity space formed in the second receiving cavity 112 by the air conduction speaker 300, improve the sound output effect of the air conduction speaker 300, and improve the sound quality of the air conduction speaker 300. In other words, the air conduction speaker 300 may be installed adjacent to the bone conduction speaker 200 without changing the volume of the acoustic cavity space, thereby reducing the size of the speaker assembly 10 and achieving a compact overall size.

[0046] In some embodiments, as shown in Figures 3a and 4, the housing assembly 100 may be provided with sound emission holes 114 and decompression holes 115 that connect the second accommodating cavity 112 to the external environment, and the sound emission holes 114 and the decompression holes 115 may be provided at intervals.

[0047] The air conduction speaker 300 is installed in the second accommodating cavity 112. In the second accommodating cavity 112, an acoustic cavity space (external acoustic cavity) of the air conduction speaker 300 may be formed.

[0048] By providing the communication hole 113 between the first housing cavity 111 and the second housing cavity 112, the second housing cavity 112 and the communication hole 113 can be communicated with each other, and by having the bone conduction speaker 200 close the communication hole 113 on the side of the communication hole 113 facing away from the second housing cavity 112, the acoustic cavity space in the second housing cavity 112 can be expanded into the communication hole 113, thereby increasing the volume of the acoustic cavity and providing better acoustic effects. The sound emission hole 114 can conduct sound waves generated by the air conduction speaker 300 to the outside of the speaker assembly 10 and propagate into the user's ear canal. By providing the decompression hole 115 to connect the second accommodating cavity 112 to the outside environment, air can flow freely between the second accommodating cavity 112 and the air conduction speaker 300, preventing the gas in the second accommodating cavity 112 from damping the vibration of the air conduction speaker 300 and affecting the sound quality of the air conduction speaker 300. Therefore, by providing the decompression hole 115, the earphone 1 can have a better sound quality effect.

[0049] By arranging the sound emission hole 114 and the decompression hole 115 at a distance from each other, mutual interference between the sound emission hole 114 and the decompression hole 115 can be reduced, and thus the air pressure released from the decompression hole 115 is less likely to affect the sound waves transmitted into the sound emission hole 114, thereby improving the sound quality effect of the earphone 1.

[0050] In some embodiments, as shown in Figures 3a and 4, the decompression hole 115 may be connected to the second accommodating cavity 112, the communication hole 113 may be connected to the second accommodating cavity 112, and the decompression hole 115 may be connected to the communication hole 113 via the second accommodating cavity 112.

[0051] In another embodiment, as shown in Figures 3b and 5b, the communication hole 113 may be directly connected to the decompression hole 115, and the bone conduction speaker 200 can similarly block the communication hole 113 on the side facing the first accommodating cavity 111, thereby ensuring the sealing of the first accommodating cavity 111 and increasing the area of ​​the air inlet end of the decompression hole 115, improving the decompression effect of the decompression hole 115, and improving the sound quality effect of the speaker assembly 10.

[0052] 3a and 4, the air conduction speaker 300 may be installed so as to divide the second housing cavity 112 into a first sub-cavity 1121 and a second sub-cavity 1122 that are separated from each other. The first sub-cavity 1121 and the second sub-cavity 1122 do not communicate with each other. The sound emission hole 114 may communicate with the first sub-cavity 1121, and the decompression hole 115 may communicate with the second sub-cavity 1122. Furthermore, the communication hole 113 may communicate with the second sub-cavity 1122.

[0053] Optionally, as shown in Fig. 4, the air conduction speaker 300 may include a diaphragm 310 and a driving mechanism 320, and the driving mechanism 320 may be connected to the diaphragm 310. An internal acoustic cavity 330 may be enclosed between the diaphragm 310 and the driving mechanism 320, and the side of the diaphragm 310 facing away from the internal acoustic cavity 330 is an acoustic cavity space and also a second sub-cavity 1122. The driving mechanism 320 vibrates the diaphragm 310 under the control of an electric signal, thereby vibrating the air in the internal acoustic cavity 330 of the air conduction speaker 300 to generate air-conducted sound waves, which propagate to the outside of the speaker assembly 10 through the first sub-cavity 1121, the second sub-cavity 1122 (i.e., the acoustic cavity space) and the sound emission hole 114.

[0054] In this case, the presence of the communication hole 113 can increase the volume of the second sub-cavity 1122, i.e., the volume of the acoustic cavity space can be increased, and the sound quality effect of the speaker assembly 10 can be further improved.

[0055] Specifically, when the earphone 1 is in operation, a portion of the sound waves generated by the air conduction speaker 300 using the principle of air vibration can propagate to the outside of the speaker assembly 10 through the first sub-cavity 1121 and the sound outlet 114. The decompression outlet 115 connects the second sub-cavity 1122 to the external environment, allowing air to flow freely between the external environment and the second sub-cavity 1122. If the second sub-cavity 1122 is closed, the air in the second sub-cavity 1122 will cause air damping on the vibrations of the air conduction speaker 300 during operation, further affecting the sound quality of the air conduction speaker 300. In this way, the decompression outlet 115 can maintain a balance of air pressure between the second sub-cavity 1122 and the external environment, 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.

[0056] In some embodiments, the number of decompression holes 115 may be one or more, and the multiple decompression holes 115 may be spaced apart. The multiple decompression holes 115 may improve the decompression effect, allowing the earphone 1 to have better sound quality. Optionally, the positions of the at least two decompression holes 115 on the housing assembly 100 that communicate with the external environment may be located on different sides of the housing assembly 100, thereby reducing the likelihood that the decompression holes 115 will interfere with the improvement of the effect.

[0057] 3a, 4, and 5a, the housing assembly 100 may include a first housing 120, a second housing 130, and a third housing 140, where the second housing 130 and the first housing 120 may cooperate to form a first accommodating cavity 111 (schematically shown in the first housing 120 in FIG. 4, but this does not mean that the first accommodating cavity 111 is the only portion shown in the first housing 120), and the third housing 140 and the first housing 120 may cooperate to form a second accommodating cavity 112 (schematically shown in the first housing 120 in FIG. 4, but this does not mean that the second accommodating cavity 112 is the only portion shown in the first housing). A communication hole 113 may be formed in the first housing 120. The third housing 140 may be formed with a sound release hole 114 that connects the second accommodating cavity 112 to the outside environment, and the first housing 120 may be formed with a decompression hole 115 that connects the second accommodating cavity 112 to the outside environment. Optionally, the decompression hole 115 may be located on a side of the first housing 120 that is farther from the third housing 140, thereby increasing the distance between the decompression hole 115 and the sound release hole 114.

[0058] Forming the first receiving cavity 111 and the second receiving cavity 112 through mutual contact and cooperation between the first housing 120, the second housing 130, and the third housing 140 facilitates assembly and disassembly of the speaker assembly 10 and also improves the compactness and stability of the structure of the speaker assembly 10. By providing the sound emitting hole 114 in the third housing 140 and the decompression hole 115 in the first housing 120, the distance between the sound emitting hole 114 and the decompression hole 115 is increased, which reduces mutual interference between the sound waves transmitted by the sound emitting hole 114 and the decompression hole 115 and reduces the probability of the sound waves transmitted by the sound emitting hole 114 and the decompression hole 115 interfering and canceling each other in the near field, thereby enabling the earphone 1 to have better sound quality.

[0059] 2, the earphone may include a wearing assembly 20 and the above-described speaker assembly 10. The wearing assembly 20 may be referred to as an ear hook 20. Specifically, the wearing assembly 20 may be connected to a first housing 120. Connecting the wearing assembly 20 to the first housing 120 makes the connection between the wearing assembly 20 and the speaker assembly 10 stronger, and makes it less likely that the wearing assembly 20 will come off the speaker assembly 10 during use. Optionally, the positions of the first housing 120 and the mounting assembly 20 correspond to the first housing cavity 111; specifically, when the mounting assembly 20 is assembled to the first housing 120, the mounting assembly 20 faces the first housing cavity 111, and the first housing 120 is closer to the first housing cavity 111 than the swing position of the mounting assembly 20; thus, when the bone conduction speaker 200 vibrates the first housing 120, the first housing can vibrate with a larger amplitude and a faster speed, and the bone conduction sound quality can be improved.

[0060] 3a to 4, the housing assembly 100 may include a partition wall 150 for separating the first housing cavity 111 and the second housing cavity 112. A communication hole 113 may be formed in the partition wall 150. The bone conduction speaker 200 may close the communication hole 113 on the side of the partition wall 150 facing the first housing cavity 111.

[0061] The partition wall 150 separates the first housing cavity 111 from the second housing cavity 112, and further separates the bone conduction speaker 200 from the air conduction speaker 300. This prevents air vibrations generated when the bone conduction speaker 200 vibrates in the first housing cavity 111 from affecting some of the air conduction sound waves of the air conduction speaker 300, thereby preventing the bone conduction speaker 200 from affecting the transmission of air conduction sound waves and preventing the bone conduction speaker 200 and the air conduction speaker 300 from coming into contact with each other and colliding with each other, which could cause damage to each other. The partition wall 150 separates the first housing cavity 111 from the second housing cavity 112, which also improves the ease of assembly of the bone conduction speaker 200 and the air conduction speaker 300. Furthermore, since the bone conduction speaker 200 blocks the communication hole 113 on the side of the partition wall 150 facing the first accommodating cavity 111, the communication hole 113 communicates with the second accommodating cavity 112, forming a space with a larger volume than the first accommodating cavity 111, and further improving the air conduction sound quality of the air conduction speaker 300.

[0062] 4, the bone conduction speaker 200 can abut against the partition wall 150 to block the communication hole 113. In other words, the wall surface of the bone conduction speaker 200 abuts directly or indirectly against the partition wall 150 to block the communication hole 113, thereby ensuring the airtightness of the first housing cavity 111.

[0063] In another embodiment, a sealing member 160 may be provided between the bone conduction speaker 200 and the partition wall 150, surrounding the communication hole 113. One side of the sealing member 160 is in close contact with the partition wall 150 to surround the communication hole 113, and the other corresponding side is in close contact with one wall surface of the bone conduction speaker 200, thereby allowing the bone conduction speaker 200 to close the communication hole 113. By providing the sealing member 160 between the bone conduction speaker 200 and the partition wall 150, the first housing cavity 111 is more tightly sealed, thereby improving the bone conduction effect.

[0064] In some embodiments, the sealing member 160 may include at least one of a sealant and a sealant ring. When the sealing member 160 is a sealant, the sealant can be dispensed onto the partition wall 150 around the outer periphery of the communication hole 113, and then the bone conduction speaker 200 can be pressed against the sealant and the partition wall 150 to seal the communication hole 113. Since the sealant ring also has good sealing properties, the sealing properties of the first receiving cavity 111 can also be improved by placing the sealant ring between the partition wall 150 and the bone conduction speaker 200. Of course, in other embodiments, the sealing member 160 may be other parts such as a gasket plate, wadding, etc., which are not specifically listed here.

[0065] In some embodiments, as shown in Figures 3a, 4 and 5a, the housing assembly 100 may have a support wall 101 installed in the first accommodating cavity 111, the support wall 101 and the partition wall 150 together enclose a position restriction space 102, the bone conduction speaker 200 may be installed in the position restriction space 102 and abut against the support wall 101, and the support wall 101 and the partition wall 150 can cooperate to restrict the bone conduction speaker 200 from moving radially relative to the housing assembly 100.

[0066] Specifically, the direction in which the bone conduction speaker 200 vibrates relative to the housing assembly 100 is the axial direction of the bone conduction speaker 200, and a direction perpendicular to the axial direction of the bone conduction speaker 200 may be the radial direction of the bone conduction speaker 200, and the support wall 101 and the partition wall 150 cooperate to restrict the bone conduction speaker 200 from moving relative to the housing assembly 100 in any radial direction perpendicular to the axial direction. The axial directions of the bone conduction speaker 200 are the two directions in which the X-rays in FIG. 3a extend, and the radial directions of the bone conduction speaker 200 may be the two directions in which the Y-rays in FIG. 3a and FIG. 4 extend, but the radial directions are not limited to the directions specifically indicated by Y.

[0067] Optionally, one end of the support wall 101 is 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 fits correspondingly to the outer surface of the bone conduction speaker 200, so that the support wall 101 fits closely to the bone conduction speaker 200 in the radial direction of the bone conduction speaker 200, and thus the support wall 101 and the partition wall 150 cooperate to restrict movement of the bone conduction speaker 200 relative to the housing assembly 100 in the radial direction, and further restrict movement of the bone conduction speaker 200 in the axial direction of the bone conduction speaker 200, making the internal structure of the speaker assembly 10 more compact.

[0068] In some embodiments, as shown in FIG. 3a, the bone conduction speaker 200 may have a first central axis X and may be installed to vibrate in the direction of the first central axis X. The bone conduction speaker 200 has a peripheral side surface 201 formed around the first central axis X, and the peripheral side surface 201 closes the communication hole 113. The two directions indicated by the first central axis X may be axial directions of the bone conduction speaker 200, and the bone conduction speaker 200 vibrates in the direction of the first central axis X to transmit sound to the user through bone conduction vibration.

[0069] Optionally, the peripheral side surface 201 of the bone conduction speaker 200 may abut against the support wall 101, and the support wall 101 and the partition wall 150 can cooperate to act on the peripheral side surface 201 of the bone conduction speaker 200 to restrict radial movement of the bone conduction speaker 200 relative to the housing assembly 100.

[0070] In some embodiments, as shown in FIGS. 3a and 4, the air conduction speaker 300 has a second central axis Y and is positioned to vibrate in the direction of the second central axis Y.

[0071] Optionally, the first central axis X and the second central axis Y may be perpendicular to each other, the direction indicated by the first central axis X may be the axial direction of the bone conduction speaker 200, and the direction indicated by the second central axis Y may be one of the radial directions perpendicular to the axial direction of the bone conduction speaker 200.

[0072] Optionally, as shown in Figures 3a, 4, and 6, the housing assembly 100 may have a first side 103, a second side 104, and a third side 105, where the first side 103 and the second side 104 are disposed on opposite sides in the vertical direction of the first central axis X and the second central axis Y, and the third side 105 is disposed 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 decompression hole 115 may be formed in the first side 103 or the second side 104, and the other decompression hole 115 may be formed in the third side 105.

[0073] For example, in some embodiments, first central axis X may pass through third side 105. Housing assembly 100 has a face support side for transmitting bone conduction vibrations to the user's face, and third side 105 is installed facing away from the face support side. In other examples, second central axis Y passes through third side 105. Third side 105 faces away from the side of housing assembly 100 on which sound emission holes 114 are located.

[0074] By installing multiple decompression holes 115, the decompression area of ​​the second accommodating cavity 112 to the external environment is increased, allowing air to flow quickly between the external environment and the second accommodating cavity 112, and more quickly directing the air in the acoustic cavity of the second accommodating cavity 112 to the external environment, thereby reducing the attenuation of the operation of the air conduction speaker 300 due to difficulty in air flow, and also avoiding the impact on the vibration sound waves of the air conduction speaker 300 caused by the second accommodating cavity 112 being unable to decompress after one decompression hole 115 is blocked.

[0075] In some embodiments, different decompression holes 115 are located on different sides of the housing assembly 100, for example, by locating a decompression hole 115 at a position on the first side 103 or the second side 104 corresponding to the second sub-cavity 1122 and a position on the third side 105 corresponding to the second sub-cavity 1122, the decompression hole 115 communicates with the second sub-cavity 1122. By locating them in this manner, the decompression area is increased and the probability of interference, particularly the probability of constructive interference, occurring between the sounds transmitted from each decompression hole 115 is reduced, improving sound quality and further reducing the impact on the sound transmitted from the sound emission hole 114.

[0076] 6, the housing assembly 100 may have a main body ridge 106 protruding outward on the third side 105, and the other decompression hole 115 passes through the main body ridge 106 to communicate with the external environment. When the earphone 1 is worn and used, the direction in which the sound emitting holes 114 are formed is usually toward the user's ear canal, and the bone conduction surface of the corresponding bone conduction speaker 200 is usually in close contact with the skin near the ear canal, so the direction in which the sound emitting holes 114 are formed and the bone conduction surface intersect with each other to form an acute angle, and the housing assembly 100 has a main body ridge 106 protruding outward on the side away from the skin.

[0077] Optionally, the body ridge 106 may be located at a position corresponding to the second housing cavity 112 on the first housing 120, such that the decompression hole 115 located at the body ridge 106 communicates with the second housing cavity 112. By locating the other decompression hole 115 at the body ridge 106, this decompression hole 115 is less likely to be blocked when the earphone 1 is worn and used, and airflow conditions within the decompression hole 115 are ensured. Of course, in other embodiments, the body ridge 106 of the third side 105 may be recessed toward the inside of the housing assembly 100.

[0078] In some embodiments, as shown in FIGS. 4, 5a, and 7, the first accommodating cavity 111 may have a first bottom wall 1111 and a second bottom wall 1112 disposed opposite each other in a vertical direction Z of the first central axis X and the second central axis Y, and the second accommodating cavity 112 may have a third bottom wall 1123 and a fourth bottom wall 1124 disposed opposite each other. The first bottom wall 1111 and the third bottom wall 1123 may be disposed adjacent to each other, and the second bottom wall 1112 and the fourth bottom wall 1124 may be disposed adjacent to each other. The vertical direction Z has a positive direction from the surface of the first bottom wall 1111 to the surface of the second bottom wall 1112 and a reverse direction opposite to the positive direction. The positive direction is indicated by arrow Z in FIGS. 3a and 7.

[0079] Optionally, the peripheral side surface 201 of the bone conduction speaker 200 may abut against the first bottom wall 1111, and the first bottom wall 1111, the support wall 101 and the partition wall 150 together enclose the position restriction space 102, and the bone conduction speaker 200 may be installed within the position restriction space 102 and abut against the support wall 101 and the first bottom wall 1111.

[0080] 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 .

[0081] In some embodiments, as shown in FIG. 4, the housing assembly 100 has a wall 1101 vertically adjacent to the first receiving cavity 111, and the decompression holes 115 are formed in the wall 1101.

[0082] Specifically, by forming decompression hole 115 in wall portion 1101 between first bottom wall 1111 and third bottom wall 1123, it is possible to fully utilize the available space within housing assembly 100 and improve the space utilization rate of speaker assembly 10. Furthermore, by making the lowest position of first bottom wall 1111 higher than the lowest position of third bottom wall 1123, the heights of first bottom wall 1111 and third bottom wall 1123 are offset in the positive direction of vertical direction Z, which increases the space on wall portion 1101 between them for installing decompression hole 115. Furthermore, the dimensions of decompression hole 115 can be set larger, which increases the dimensions of decompression hole 115 and improves the decompression effect.

[0083] 4 and 5a, the decompression hole 115 may be installed in the wall portion 1101 in a horn shape extending from the second accommodating space 110 to the outside of the housing assembly 100, and a portion of the hole wall of the decompression hole 115 adjacent to the third bottom wall 1123 may be gradually inclined in the opposite direction toward the side where the third bottom wall 1123 is located. By installing it in this manner, the size of the decompression hole 115 can be further increased, making it easier to decompress using the decompression hole 115 and improving the sound quality effect of the speaker assembly 10.

[0084] In some embodiments, as shown in FIGS. 3a and 7, the first central axis X and the second central axis Y may be skewed relative to each other, and the first central axis X and the second central axis Y may be offset from each other in a direction Z perpendicular to the first central axis X and the second central axis Y.

[0085] 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, by arranging the first central axis X and the second central axis Y so that they are twisted and offset from each other, mutual interference between the bone conduction speaker 200 and the air conduction speaker 300 during vibration can be reduced, and the effectiveness of both sound generation and transmission by both can be improved.

[0086] For example, in some embodiments, as shown in FIG. 7, by setting the first central axis X higher than the second central axis Y in the positive direction, it is possible to easily set the lowest position of the first bottom wall 1111 higher than the lowest position of the third bottom wall 1123, thereby easily forming the horn-shaped decompression hole 115 and allowing the size of the horn-shaped decompression hole 115 to be set larger.

[0087] In some embodiments, the distance P between the first central axis X and the second central axis Y may be 0.2 to 0.8 mm, as shown in Figure 7. The distance between the first central axis X and the second central axis Y may be indicated by the distance P in Figure 5a. 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.

[0088] 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 manner, the lowest position of the first bottom wall 1111 can be made higher than the lowest position of the third bottom wall 1123, and the dimensions of the speaker assembly 10 can be controlled to be small.

[0089] 8 and 9 , the bone conduction speaker 200 may include a cylindrical cover 210 extending along a first central axis X, a voice coil assembly 221, a magnet assembly 222, and a vibration transmission sheet 223, wherein the voice coil assembly 221 and the magnet assembly 222 may be installed in a cylindrical space of the cylindrical cover 210, the vibration transmission sheet 223 may fixedly connect one of the magnet assembly 222 and the voice coil assembly 221 to the cylindrical cover 210, and the other of the magnet assembly 222 and the voice coil assembly 221 may be fixedly connected to the cylindrical cover 210. The cylindrical cover 210 closes the communication hole 113.

[0090] When a current flows through the voice coil assembly 221, the magnetic field of the magnet assembly 222 interacts with the voice coil assembly 221, causing it to vibrate and converting a current signal related to sound into a vibration signal. When a current flows through the voice coil assembly 221, the voice coil assembly 221 generates an electric signal, which interacts with the magnetic field of the magnet assembly 222 and causes the magnet assembly 222 to vibrate. The cylindrical cover 210 may be a magnetically permeable cover and can constrain the direction of the magnetic field of the magnet assembly 222. The cylindrical cover 210 may also be in contact with the housing assembly 100. When the voice coil assembly 221 vibrates, the voice coil assembly 221 vibrates the cylindrical cover 210, and the vibration signal can be transmitted to the housing assembly 100 via the cylindrical cover 210. The vibration transmission sheet 223 elastically connects the voice coil assembly 221 and the magnet assembly 222, thereby elastically constraining the voice coil assembly 221 and the magnet assembly 222 from moving relative to each other along the direction of the first central axis X.

[0091] 10 and 11, an air conduction speaker 300 may include a diaphragm 310 and a driving mechanism 320, which may be connected to the diaphragm 310, and an internal acoustic cavity 330 may be enclosed between the diaphragm 310 and the driving mechanism 320. The driving mechanism 320 vibrates the diaphragm 310 under the control of an electrical signal, thereby vibrating the air in the internal acoustic cavity 330 within the air conduction speaker 300 and generating sound waves.

[0092] There are various ways to arrange the air conduction speaker 300 in the second accommodating cavity 112. For example, the internal acoustic cavity 330 may be connected to the second sub-cavity 1122 and thereby to the decompression hole 115, or may be connected to the first sub-cavity 1121. Two of these ways are shown below.

[0093] Method 1: The diaphragm 310 is closer to the communication hole 113 than the drive mechanism 320, and the diaphragm 310 is installed facing the communication hole 113 and faces the second sub-cavity 1122, and the first sub-cavity 1121 communicates with the internal acoustic cavity 330.

[0094] When the driving mechanism 320 vibrates the diaphragm 310, the diaphragm 310 is closer to the communication hole 113, i.e., closer to the bone conduction speaker 200. On the one hand, because the radial dimension of the diaphragm 310 is large and the radial dimension of the driving mechanism 320 is small, by placing the large-sized diaphragm 310 close to the bone conduction speaker 200 and the small-sized driving mechanism 320 close to the outside, the volume close to the outside of the housing assembly 100 is effectively reduced, the volume and dimensions of the speaker assembly 10 are made more compact and rational, and the internal space utilization rate of the speaker assembly 10 is improved. On the other hand, because the diaphragm 310 is installed opposite the communication hole 113 and facing the second sub-cavity 1122, the volume of the second sub-cavity 1122 is effectively increased, and the air in the second sub-cavity 1122 can be effectively conducted to the outside through the decompression hole 115, improving the decompression effect.

[0095] Method 2: The diaphragm 310 is farther from the communication hole 113 than the drive mechanism 320 , and the diaphragm 310 moves away from the communication hole 113 and faces the first sub-cavity 1121 , and the second sub-cavity 1122 communicates with the internal acoustic cavity 330 .

[0096] By placing the diaphragm 310 away from the communication hole 113 and toward the first sub-cavity 1121, sound waves generated by the diaphragm 310 can be easily transmitted to the first sub-cavity 1121. The presence of the communication hole 113 and the second sub-cavity 1122 increases the size of the internal acoustic cavity 330, and by reducing the pressure using the pressure reduction hole 115, the pressure reduction effect can be effectively improved.

[0097] 10 and 11 , the drive mechanism 320 may include a voice coil 321 and a magnetic circuit assembly 322, where 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 circumferential surface of the cover 3222. The magnetic circuit assembly 322 interacts with the voice coil 321 to vibrate, and the voice coil 321 interacts with the magnetic field of the magnetic circuit assembly 322 to vibrate when a current is passed through it.

[0098] An edge of the diaphragm 310 may be fixed to 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 acoustic 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 emission hole 114 and facing the communication hole 113, and the first sub-cavity 1121 communicates with the internal acoustic cavity 330. By arranging the first sub-cavity 1121 to communicate with the internal acoustic cavity 330, sound waves generated by the vibration of the air inside the internal acoustic cavity 330 can propagate to the outside of the speaker assembly 10 through the first sub-cavity 1121 and the sound emission hole 114.

[0099] Optionally, the annular flange 3223 may be located on the side away from the sound emission hole 114, and the diaphragm 310 may be located on the side away from the sound emission hole 114. In this way, the diaphragm 310, the annular flange 3223, etc. may be closer to the inside of the housing assembly 100, thereby allowing the diaphragm 310 and the annular flange 3223 with larger radial dimensions within the air conduction speaker 300 to be located away from the sound emission hole 114, and the parts with smaller dimensions within the air conduction speaker 300 to be close to the sound emission hole 114. Compared to a conventional speaker structure in which the diaphragm 310 must face the sound output hole 114, this inverted installation of the air conduction speaker 300 effectively reduces the dimensions of a portion of the housing assembly 100 that is close to the sound output hole 114, and also reduces the dimensions of a portion of the housing assembly 100 from the middle region to the sound output hole 114 (i.e., the radial dimensions of the outer periphery of the housing assembly 100 gradually decrease), resulting in a more compact structure, effectively improving the space utilization rate of the housing assembly 100 and reducing the overall volume of the housing assembly 100. Furthermore, this inverted installation structure optimizes the sound output path, further improving sound quality. Simply put, by inverting the air conduction speaker 300 along the air conduction vibration direction, the structural dimensions of the housing assembly 100 can be effectively reduced.

[0100] In speaker assembly 10, if sound emission holes 114 and decompression holes 115 are located close to each other, the sound waves generated by both sound emission holes 115 and sound emission holes 114 may affect each other and interfere in the near field, and the low-frequency sound waves transmitted from sound emission holes 114 may be attenuated due to anti-phase interference of the sound waves emitted when decompressing using decompression holes 115, easily causing sound cancellation. In the following examples, technical means related to decompression holes 115 and sound emission holes 114 will be further described.

[0101] The following is an example of the earphone 1 according to another embodiment, which will be described below as an example.

[0102] As described above, the housing assembly 100 may have an accommodating space 110. The air conduction speaker 300 is disposed in the accommodating space 110. The bone conduction speaker 200 is disposed in the accommodating space 110.

[0103] Optionally, the bone conduction speaker 200 has a first central axis X and can vibrate along the direction of the first central axis X. The air conduction speaker 300 has a second central axis Y and can vibrate along the direction of the second central axis Y. Specifically, the voice coil and diaphragm of the air conduction speaker 300 vibrate in the direction of the second central axis Y.

[0104] The housing assembly 100 is further formed with a sound emission hole 114 and a decompression hole 115 communicating with the accommodation space 110, and the sound emission hole 114 and the decompression hole 115 each transmit a portion of the sound waves generated by the air conduction speaker 300 to the external environment. The decompression hole 115 and the sound emission hole 114 may be located on two side surfaces of the housing assembly 100 that are installed back to back.

[0105] 12 and 13 , 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 together enclose the accommodation space 110. Optionally, the second housing 130 may be connected to the first housing 120 along a first central axis X, and the third housing 140 may be connected to the second housing 130 along a second central axis Y. Optionally, the sound emission hole 114 may be formed in the third housing 140, and the decompression hole 115 may be formed in a portion of the first housing 120 away from the third housing 140. Thus, the sound emission hole 114 and the decompression hole 115 are respectively located on two side surfaces of the housing assembly 100 that are arranged back to back.

[0106] Arranging the sound emitting holes 114 and the decompression holes 115 on two back-to-back side surfaces of the housing assembly 100 increases the distance between the sound emitting holes 114 and the decompression holes 115, compared to arranging the sound emitting holes 114 and the decompression holes 115 on adjacent or identical side surfaces of the housing assembly 100, which reduces the mutual influence between the sound emitting holes 114 and the decompression holes 115 and reduces the likelihood of the sound emitting holes 114 and the decompression holes 115 interfering and canceling each other in the near field, thereby weakening the sound waves transmitted from the sound emitting holes 114. This reduces the sound cancellation phenomenon between the two, improves the low-frequency effect of the speaker assembly 10, and improves the sound quality of the earphone 1.

[0107] 12 and 13, the speaker assembly 10 may be provided with a decompression passage 400 that communicates with the decompression hole 115. The sound emission hole 114 may communicate with the accommodation space 110, and the decompression passage 400 guides a portion of the sound waves generated by the air conduction speaker 300 in the accommodation space 110 to the decompression hole 115.

[0108] By providing the decompression passage 400 to communicate between the accommodation space 110 and the decompression hole 115, air in the accommodation space 110 that needs to be decompressed can be easily guided into the decompression passage 400, and the decompression can be further achieved by the decompression hole 115. On the one hand, the decompression path can be extended to improve the decompression effect, and on the other hand, by communicating the decompression passage 400 with the decompression hole 115, the sound waves that need to be decompressed are less likely to affect the operation of other assemblies during the decompression process, thereby improving the sound quality of the speaker assembly 10. The provision of the decompression passage 400 allows for accurate decompression of the air conduction speaker 300, reduces the mutual influence between the sound emission hole 114 and the decompression hole 115, and improves the flexibility of decompression of the air conduction speaker 300.

[0109] In some embodiments, the decompression passage 400 and the accommodation space 110 may be spaced apart, and the decompression passage 400 may be in communication with the accommodation space 110. Optionally, the first housing 120 may be formed with the decompression passage 400, with one end of the decompression passage 400 in communication with the accommodation space 110 and the other end formed as a decompression hole 115. Specifically, by spaced apart from each other, the decompression passage 400 and the accommodation space 110 can be spaced apart from each other, allowing the gas to be decompressed to be independently decompressed without affecting the components in the accommodation space 110. Furthermore, by forming the decompression passage 400 in the first housing 120, the distance between the decompression hole 115 and the sound emission hole 114 is increased, while there is no need to separately assemble the decompression passage 400 when assembling the first housing 120, the second housing 130, and the third housing 140, improving assembly efficiency.

[0110] In some embodiments, as shown in Figures 12 and 13, the accommodation space 110 may include a first accommodation cavity 111 and a second accommodation cavity 112 that are separated from each other, the bone conduction speaker 200 is installed in the first accommodation cavity 111, the air conduction speaker 300 is installed in the second accommodation cavity 112, the sound emission hole 114 is connected to the second accommodation cavity 112, the decompression passage 400 is connected to the second accommodation cavity 112 and is installed at a distance from the first accommodation cavity 111, and the decompression passage 400 connects the second accommodation cavity 112 and the decompression hole 115.

[0111] Optionally, the second housing 130 and the first housing 120 are cooperatively connected to each other to form a first accommodating cavity 111, and the third housing 140 and the first housing 120 are cooperatively connected to each other to form a second accommodating cavity 112.

[0112] Since the operating principles of the bone conduction speaker 200 and the air conduction speaker 300 are different, by arranging the first accommodating cavity 111, the second accommodating cavity 112 and the decompression passage 400 at intervals from each other, the independence of the operation of the bone conduction speaker 200 can be ensured, the impact of the operation of the air conduction speaker 300 on the bone conduction speaker 200 can be reduced as much as possible, and the bone conduction speaker 200 can also be protected to some extent. During operation of the earphone 1, sound waves generated by the air conduction speaker 300 according to the principle of air vibration can propagate through the sound emission hole 114 to the outside of the speaker assembly 10 and then into the user's ear canal. Therefore, by connecting the second accommodating cavity 112 in which the air conduction speaker 300 is located to the external environment through the decompression hole 115, air can flow freely between the second accommodating cavity 112 and the air conduction speaker 300, preventing the air in the second accommodating cavity 112 from attenuating the vibration of the air conduction speaker 300 and affecting the sound quality effect of the air conduction speaker 300.

[0113] In some embodiments, the first accommodating cavity 111 and the second accommodating cavity 112 may be separated from each other. Specifically, the area of ​​the communication point between the first accommodating cavity 111 and the external environment may be smaller than the area of ​​the communication point between the second accommodating cavity 112 and the external environment and the area of ​​the communication point between the decompression passage 400 and the external environment. In other words, the airtightness of the first accommodating cavity 111 is higher than the airtightness of the second accommodating cavity 112 and the decompression passage 400. The airtightness can be understood as the airtightness of the cavity space.

[0114] Since the bone conduction speaker 200 requires a highly sealed environment to ensure the bone conduction effect, by independently installing the bone conduction speaker 200 and the air conduction speaker 300 in two different cavities within the accommodation space 110, mutual interference between the bone conduction speaker 200 and the air conduction speaker 300 can be effectively reduced, and by placing the bone conduction speaker 200 in the first accommodation cavity 111, which has better sealing properties, the sound quality effect of the bone conduction speaker 200 can also be effectively improved.

[0115] Optionally, the decompression passage 400 and the first accommodating cavity 111 are spaced apart in a direction Z perpendicular to the arrangement direction of the first accommodating cavity 111 and the second accommodating cavity 112. As shown in Figures 12 and 13, the arrangement direction of the first accommodating cavity 111 and the second accommodating cavity 112 may coincide with the direction of the second central axis Y of the air conduction speaker 300, and both may be in the direction indicated by line Y in Figures 12 and 13, and the direction Z perpendicular to the arrangement direction of the first accommodating cavity 111 and the second accommodating cavity 112 is indicated by arrow Z in Figures 12 and 13.

[0116] Optionally, the length component of the extension length of the decompression passage 400 along the alignment direction is greater than its length component along the vertical direction Z. By installing in this manner, the dimension of the decompression passage 400 in the vertical direction Z becomes smaller, thereby reducing the dimension of the speaker assembly 10 in the vertical direction Z, increasing the distance between the sound emitting holes 114 and the decompression holes 115, and reducing the mutual influence in the near field between the sound emitting holes 114 and the decompression holes 115. The length component of the extension length of the decompression passage 400 along the alignment direction is shown as length E in FIG. 13 , and the length component of the decompression passage 400 along the vertical direction Z is shown as length F in FIG. 13 , where E>F.

[0117] In some embodiments, as shown in FIGS. 12 and 13 , the housing assembly 100 may include a first partition wall 170 between the first housing cavity 111 and the second housing cavity 112, and a second partition wall 180 between the decompression passage 400 and the first housing cavity 111. The first partition wall 170 may separate the second housing cavity 112 from the first housing cavity 111. The second partition wall 180 may separate the decompression passage 400 from the first housing cavity 111. In this manner, the independent decompression passage 400 and the first housing cavity 111 may be formed. On the one hand, the presence of the decompression passage 400 extends the decompression path, increases the size of the decompression space, improves the decompression effect, and further improves sound quality. On the other hand, the operating processes of the air conduction speaker 300 and the bone conduction speaker 200 do not interfere with each other, reducing mutual influence between them and ensuring the sound quality output effect of each.

[0118] Optionally, the second partition wall 180 may have one end connected to the first housing 120 and the other corresponding end connected to the first partition wall 170, so that the pressure reduction passage 400 and the first accommodating cavity 111 are spaced apart in the vertical direction Z.

[0119] Optionally, as shown in FIG. 13 , the first partition wall 170 may further extend between the second accommodating cavity 112 and the decompression passage 400, and the first partition wall 170 may have a sound guide hole 173 formed therein, connecting the second accommodating cavity 112 and the decompression passage 400. The decompression hole 115 communicates with the second accommodating cavity 112 via the decompression passage 400 and the sound guide hole 173. When the earphone 1 is operating, sound waves generated by the air conduction speaker 300 that need to be decompressed can propagate to the outside of the speaker assembly 10 through the second accommodating cavity 112, the sound guide hole 173, the decompression passage 400, and the decompression hole 115 in order, thereby preventing the air in the second accommodating cavity 112 from damping the vibrations of the air conduction speaker 300 and affecting the sound quality of the air conduction speaker 300.

[0120] 13, the housing assembly 100 may have a first communication hole 172 formed between the first housing cavity 111 and the second housing cavity 112, which communicates the first housing cavity 111 and the second housing cavity 112. The bone conduction speaker 200 can close the first communication hole 172 so that the first housing cavity 111 and the second housing cavity 112 are separated from each other.

[0121] By providing a first communication hole 172 between the airtight first receiving cavity 111 and the second receiving cavity 112 and blocking one side of the first communication hole 172 with the bone conduction speaker 200, the airtightness of the second receiving cavity 112 is highly ensured, the usable space of the first receiving cavity 111 is expanded, and the ease of assembly of the air conduction speaker 300 and the reliability of its structural layout are effectively improved. The volume of the acoustic cavity space formed in the second receiving cavity 112 by the air conduction speaker 300 is simply and effectively expanded, improving the sound output effect of the air conduction speaker 300 and the sound quality of the air conduction speaker 300. In other words, the air conduction speaker 300 may be installed adjacent to the bone conduction speaker 200 without changing the volume of the acoustic cavity space, thereby reducing the size of the speaker assembly 10 and achieving a compact overall size.

[0122] In some embodiments, as shown in FIG. 13, the housing assembly 100 may have a second communication hole 181 formed between the first accommodating cavity 111 and the decompression passage 400, which connects the first accommodating cavity 111 and the decompression passage 400, and the bone conduction speaker 200 blocks the second communication hole 181 so that the first accommodating cavity 111 and the decompression passage 400 are separated from each other.

[0123] Similarly, by installing the second communication hole 181 to connect the first accommodating cavity 111 and the decompression passage 400 and installing the bone conduction speaker 200 to block the second communication hole 181, the airtightness of the first accommodating cavity 111 can be highly ensured and the area of ​​the decompression passage 400 can be increased, thereby increasing the decompression space of the decompression passage 400 and improving the decompression effect, or ensuring the size of the area of ​​the decompression passage 400 and bringing the decompression passage 400 closer to the first accommodating cavity 111, thereby reducing the dimensions of the speaker assembly 10 in the vertical direction Z.

[0124] Of course, in other embodiments, the decompression passage 400 may be provided in other forms. Other forms of the decompression passage 400 will be described below as examples.

[0125] In some embodiments, as shown in FIG. 14 , the speaker assembly 10 includes a passage pipe 500 having a decompression passage 400 formed therein, the passage pipe 500 being fixedly installed in the housing assembly 100 and positioned within the first accommodating cavity 111, with one end of the passage pipe 500 communicating with the second accommodating cavity 112 and the other end communicating with the decompression hole 115.

[0126] Optionally, a first partition wall 170 may be installed between the first accommodating cavity 111 and the second accommodating cavity 112 to separate the second accommodating cavity 112 from the first accommodating cavity 111. One end of the passage pipe 500 is connected to the first partition wall 170 and communicates with the second accommodating cavity 112, and the other end is communicates with the decompression hole 115 of the first housing 120, thereby communicating the second accommodating cavity 112 with the external environment. Optionally, the bone conduction speaker 200 is arranged next to the passage pipe 500 in the vertical direction Z at an interval.

[0127] The passage pipe 500 is disposed in the first accommodating cavity 111 and is separated from the first accommodating cavity 111 and does not communicate with each other. Specifically, the communication portion between the passage pipe 500 and the second accommodating cavity 112 is sealed with respect to the first accommodating cavity 111, and the communication portion between the passage pipe 500 and the decompression hole 115 is also sealed with respect to the first accommodating cavity 111. Specifically, the passage pipe 500 is sealingly connected to the first housing 120 within the first accommodating cavity 111 and does not communicate with the first accommodating cavity 111. In this way, the sealing of the first accommodating cavity 111 can be highly ensured, and the bone conduction effect of the bone conduction speaker 200 can be ensured.

[0128] In another embodiment, as shown in FIG. 15, a part of the accommodation space 110 may be formed as a decompression passage 400 .

[0129] Optionally, the bone conduction speaker 200 may be installed as a sealed structure, with its interior separated from the accommodation space 110. A decompression passage 400 may be formed between the bone conduction speaker 200 and the inner wall of the accommodation space 110. Because the bone conduction speaker 200 has a sealed structure, it is possible to avoid the influence of water vapor in the accommodation space 110 as much as possible. Thus, the bone conduction speaker 200 can be adapted to a non-sealed environment and can achieve a good bone conduction effect without requiring high airtightness.

[0130] 15 , the accommodation space 110 may include a first accommodation cavity 111 and a second accommodation cavity 112 that are partitioned from each other, and the bone conduction speaker 200 may be installed in the first accommodation cavity 111 and may form a decompression passage 400 together with the inner wall of the first accommodation cavity 111. The air conduction speaker 300 may be installed in the second accommodation cavity 112. A sound guide hole 173 that communicates the first accommodation cavity 111 and the second accommodation cavity 112 is formed in the housing assembly 100 between the first accommodation cavity 111 and the second accommodation cavity 112.

[0131] Specifically, the decompression hole 115 is installed in the first housing 120 and communicates with the first receiving cavity 111. Sound waves generated by the air conduction speaker 300 and that need to be released can be released to the outside of the speaker assembly 10 through the second receiving cavity 112, the sound guide hole 173, the first receiving cavity 111 (i.e., the decompression passage 400), and the decompression hole 115 in order.

[0132] In this way, the bone conduction speaker 200 and the inner wall of the first accommodating cavity 111 surround the decompression passage 400, thereby simplifying the internal structure of the first accommodating cavity 111 and reducing the dimensions of the first accommodating cavity 111, and further making the structure of the speaker assembly 10 more compact. By forming a decompression passage using the first accommodating cavity 111 and the bone conduction speaker 200, the space utilization rate of the first accommodating cavity 111 can be improved, and the space of the first accommodating cavity 111 can be fully utilized to increase the dimensions of the decompression passage 400, improving the decompression effect and further improving the sound quality effect of the air conduction speaker 300.

[0133] 8 and 9, 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 installed inside the cylindrical cover 210, and the driving assembly 220 vibrates the cylindrical cover 210, which in turn vibrates the housing assembly 100. The two sealing plates 230 are installed on both ends of the cylindrical cover 210, respectively, and close the cylindrical cover 210 to form a sealed structure.

[0134] Optionally, the driving assembly 220 is disposed between two sealing plates 230, and the driving assembly 220 and the two sealing plates 230 are arranged in sequence along the first central axis X. The driving assembly 220 vibrates along the first central axis X under the action of a current signal, thereby vibrating the cylindrical cover 210 and causing the housing assembly 100 to vibrate, and the vibration signal is transmitted to the body in close contact with the housing assembly 100, thereby realizing the function of bone conduction.

[0135] The two sealing plates 230 are provided to close the cylindrical cover 210, thereby realizing a sealed structure for the bone conduction speaker 200, reducing interference with the bone conduction speaker 200 caused by external water vapor and dust, and improving the integration and compactness of the structure of the bone conduction speaker 200. Optionally, the sealing plates 230 may be provided as magnetically permeable plates, which can suppress magnetic leakage from the driving assembly 220 and further improve the magnetic field strength within the cylindrical cover 210.

[0136] 8 and 9, the bone conduction speaker 200 may further include a vibration transmission sheet 223. The drive assembly 220 may further include a voice coil assembly 221 and a magnet assembly 222, the voice coil assembly 221 may be fitted in the magnet assembly 222, the vibration transmission sheet 223 may fixedly connect the cylindrical cover 210 to 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.

[0137] When a current flows through the voice coil assembly 221, the magnetic field of the magnet assembly 222 interacts with the voice coil assembly 221 to vibrate, converting the current signal related to sound into a vibration signal. When a current flows through the voice coil assembly 221, the voice coil assembly 221 generates an electric signal, which interacts with the magnetic field of the magnet assembly 222 to vibrate. The cylindrical cover 210 constrains the direction of the magnetic field of the magnet assembly 222, and the cylindrical cover 210 may further contact the housing assembly 100. When the voice coil assembly 221 vibrates, the voice coil assembly 221 vibrates the cylindrical cover 210, and the vibration signal can be transmitted to the housing assembly 100 via the cylindrical cover 210. The vibration transmission sheet 223 elastically connects the voice coil assembly 221 and the magnet assembly 222, thereby elastically constraining the voice coil assembly 221 and the magnet assembly 222 from moving relative to each other along the direction of the first central axis X.

[0138] The following embodiment further exemplarily describes the sealing structure of the bone conduction speaker 200.

[0139] As shown in Fig. 3a, the bone conduction speaker 200 is installed in the receiving space 110. The bone conduction speaker 200 is connected to the housing assembly 100. Specifically, when the earphone 1 is used, the housing assembly 100 can be placed in close contact with the user's body, and the bone conduction speaker 200 vibrates the housing assembly 100 in a bone conduction vibration manner to transmit sound to the user.

[0140] 8 and 9, 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 surround a storage space 211. The driving assembly 220 may be installed in the storage space 211 and connected to the cylindrical cover 210. The two sealing plates 230 may be installed at both ends of the cylindrical cover 210, respectively, and may seal the storage space 211.

[0141] The driving assembly 220 can convert a current signal into a vibration signal, and when the bone conduction speaker 200 is used, the driving assembly 220 vibrates to vibrate the tubular cover 210. The two sealing plates 230 close both ends of the tubular cover 210, forming the receiving space 211 in which the driving assembly 220 is located as an enclosed space, thereby restricting the position of the driving assembly 220 and preventing the driving assembly 220 from falling out of the tubular cover 210. Furthermore, using the two sealing plates 230 to seal the tubular cover 210 prevents impurities such as dust and water droplets from entering the receiving space 211 and affecting the vibration of the driving assembly 220, thereby ensuring the bone conduction effect of the bone conduction speaker 200 and extending its service life. Furthermore, the structure of the bone conduction speaker 200 can be more integrated, improving its compactness.

[0142] Optionally, the sealing plate 230 may be configured as a magnetically permeable plate to suppress magnetic leakage from the drive assembly 220 and further improve the magnetic field strength within the cylindrical cover 210. For example, the sealing plate 230 may be a steel plate. In some embodiments, the sealing plate 230 may be an ordinary metal plate.

[0143] 8 and 9, the bone conduction speaker 200 may further include a vibration transmission sheet 223 connecting the drive assembly 220 and the cylindrical cover 210. The vibration transmission sheet 223 may be disposed between the drive assembly 220 and the sealing plate 230 in the central axis direction of the cylindrical cover 210, and may be disposed opposite the sealing plate 230. Specifically, the central axis of the cylindrical cover 210 may overlap with the first central axis X of the bone conduction speaker 200, and the central axis direction of the cylindrical cover 210 is indicated by arrow X in FIGS.

[0144] The vibration transmission sheet 223 is connected to the drive assembly 220 and restricts the position of the drive assembly 220, and the drive assembly 220 vibrates the tubular cover 210 via the vibration transmission sheet 223 during the vibration process. Specifically, the sealing plate 230, the vibration transmission sheet 223, and the drive assembly 220 are arranged in this order along the central axis of the tubular cover 210. The vibration direction of the bone conduction speaker 200 may be the same as the central axis of the tubular cover 210, i.e., the vibration direction of the drive assembly 220 is also the same as the central axis of the tubular cover 210. By installing in this manner, when the drive assembly 220 operates and vibrates, both the sealing plate 230 and the vibration transmission sheet 223 can directly restrict the position of the drive assembly 220 in the vibration direction of the drive assembly 220, and the sealing plate 230 can also restrict the position of the vibration transmission sheet 223, thereby preventing excessive deformation of the vibration transmission sheet 223 when the drive assembly 220 operates and vibrates, and extending the service life of the vibration transmission sheet 223.

[0145] In some embodiments, as shown in Figures 8 and 9, the two sealing plates 230 may be fixedly connected to both ends of the cylindrical cover 210, and the peripheral edge of the vibration transmission sheet 223 is fixed to the inner wall of the cylindrical cover 210.

[0146] Optionally, as shown in Figures 8 and 9, at least one end of the cylindrical cover 210 may be stepped to form a first support surface 212 and a second support surface 213 having a step in the central axis direction, with the second support surface 213 being closer to the central axis of the cylindrical cover 210 than the first support surface 212. The sealing plate 230 is fixedly supported by the first support surface 212. The peripheral edge of the vibration transmitting sheet 223 is fixedly supported by the second support surface 213.

[0147] Optionally, the first support surface 212 may be flush with the surface of the vibration transmission sheet 223 facing away from the second support surface 213, and in this way, when the sealing plate 230 is fixedly supported on the first support surface 212, the vibration transmission sheet 223 can be pressed against the second support surface 213 to further fix the vibration transmission sheet 223 to the tubular cover 210. By installing it in this way, the structure of the bone conduction speaker 200 can be made more compact and assembly and installation can be facilitated.

[0148] The connection between the sealing plate 230 and the first support surface 212 may be a sealed installation (for example, by applying a sealant or by welding), and another sealing plate 230 installed at the other end of the cylindrical cover 210 may also be sealed to the cylindrical cover 210, so that the cylindrical cover 210 has a sealed structure.

[0149] In another embodiment, the vibration transmission sheet 223 may be fixedly connected to one end of the cylindrical cover 210, and the sealing plate 230 is fixedly installed overlapping the side of the vibration transmission sheet 223 away from the drive assembly 220 and is installed at a distance from the cylindrical cover 210.

[0150] Specifically, the sealing plate 230, the vibration transmission sheet 223, and the cylindrical cover 210 are stacked in this order in the axial direction of the cylindrical cover 210, the peripheral edge of the vibration transmission sheet 223 is fixedly connected to one end face of the cylindrical cover 210, and the sealing plate 230 is fixed to the vibration transmission sheet 223 and connected to the cylindrical cover 210 via the vibration transmission sheet 223. The connection between the vibration transmission sheet 223 and the cylindrical cover 210 and the connection between the sealing plate 230 and the vibration transmission sheet 223 are both sealed installations.

[0151] Of course, in other embodiments, the vibration transmission sheet 223 and the sealing plate 230 may be fixed relatively to the tubular cover 210 in other ways, for example, the peripheral edge of the vibration transmission sheet 223 may be directly connected to the inner wall of the tubular cover 210, and the sealing plate 230 may be fixed and supported on the edge covering the sealing plate 230 of the first support surface 212, and this embodiment is not specifically listed here.

[0152] In some embodiments, as shown in Figures 8 and 9, the number of vibration transmission sheets 223 may be two, and the two vibration transmission sheets 223 may each be fixedly connected to the cylindrical cover 210, and the two sealing plates 230 may be installed in one-to-one correspondence on the sides of the two vibration transmission sheets 223 away from the drive assembly 220.

[0153] Specifically, the two vibration transmission sheets 223 and the two sealing plates 230 may be arranged in order along the central axis direction of the cylindrical cover 210. Alternatively, the two vibration transmission sheets 223 and the two sealing plates 230 may be located on both sides of the drive assembly 220, respectively, and the two vibration transmission sheets 223 connect the drive assembly 220 and the cylindrical cover 210 to both sides of the drive assembly 220, thereby restricting the position of the drive assembly 220 to both sides of the drive assembly 220. The two sealing plates 230 may be installed on the sides of the two vibration transmission sheets 223 that are away from the drive assembly 220, respectively, thereby protecting the two vibration transmission sheets 223 and sealing the storage space 211 of the cylindrical cover 210.

[0154] By installing two vibration transmission sheets 223, the two vibration transmission sheets 223 can vibrate the tubular cover 210 during the vibration process of the drive assembly 220, thereby improving the bone conduction effect of the bone conduction speaker 200 and improving the sensitivity of the bone conduction speaker 200. By limiting the position of the drive assembly 220, the pressure caused by the vibration of the drive assembly 220 can also be shared, thereby extending the service life of the vibration transmission sheets 223 and further extending the service life of the bone conduction speaker 200.

[0155] Of course, in other embodiments, the number of vibration transmission sheets 223 may be one, which is installed on one side of the cylindrical cover 210 and connected to the drive assembly 220, thereby limiting the position of the drive assembly 220. Two sealing plates 230 may similarly be installed on both sides of the cylindrical cover 210 and seal the storage space 211 of the cylindrical cover 210, with the vibration transmission sheet 223 located between the two sealing plates 230 and positioned within the storage space 211 of the cylindrical cover 210. Optionally, the sealing plate 230 on the side away from the vibration transmission sheet 223 and the cylindrical cover 210 may be integrally molded to form an integrated structure, thereby improving the sealing of the storage space 211.

[0156] 8 and 9 , the drive assembly 220 may further include a voice coil assembly 221 and a magnet assembly 222, where one of the voice coil assembly 221 and the magnet assembly 222 is disposed surrounding the other of the voice coil assembly 221 and the magnet assembly 222, and the one of the voice coil assembly 221 and the magnet assembly 222 is fixedly connected to the cylindrical cover 210. A vibration transmission sheet 223 fixedly connects the other of the voice coil assembly 221 and the magnet assembly 222 to the cylindrical cover 210. The vibration transmission sheet 223 and the sealing plate 230 are disposed opposite to each other in the central axis direction, and the vibration transmission sheet 223 elastically restrains the voice coil assembly 221 and the magnet assembly 222 from moving relative to each other along the central axis direction of the cylindrical cover 210. The voice coil assembly 221 receives a current, and the current can form a current circuit through the voice coil assembly 221. The magnet assembly 222 interacts with the current in the voice coil assembly 221 to vibrate in the central axial direction, and when vibrating, the magnet assembly 222 can directly or indirectly move the cylindrical cover 210. The magnet assembly 222 and the voice coil assembly 221 move relative to each other along the central axial direction of the cylindrical cover 210.

[0157] 8 and 9 , one of the voice coil assembly 221 and the magnet assembly 222 may be the voice coil assembly 221, and the other of the voice coil assembly 221 and the magnet assembly 222 may be the magnet assembly 222. Specifically, the voice coil assembly 221 is installed on the inner wall of the cylindrical cover 210 and fixedly connected to the cylindrical cover 210, the voice coil assembly 221 is installed to surround the magnet assembly 222, the magnet assembly 222 is installed in the storage space 211 of the cylindrical cover 210 and installed at a distance from the voice coil assembly 221, and the vibration transmission sheet 223 fixedly connects the magnet assembly 222 to the cylindrical cover 210. The magnet assembly 222, the vibration transmission sheet 223, and the sealing plate 230 are aligned in this order along the central axis of the cylindrical cover 210. When the magnet assembly 222 and the voice coil assembly 221 interact with each other, the magnet assembly 222 vibrates the cylindrical cover 210 via the vibration transmission sheet 223 .

[0158] Of course, in other embodiments, one of the voice coil assembly 221 and the magnet assembly 222 may be the magnet assembly 222, and the other 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 fixed to and closely attached to the inner wall of the cylindrical cover 210 and may be installed to surround the voice coil assembly 221, and the voice coil assembly 221 may be connected to the cylindrical cover 210 via the vibration transmission sheet 223. The magnet assembly 222 and the voice coil assembly 221 interact with each other, and the magnet assembly 222 directly vibrates the cylindrical cover 210, which in turn vibrates the housing assembly 100.

[0159] By installing the vibration transmission sheet 223 so as to elastically restrain the relative movement between the voice coil assembly 221 and the magnet assembly 222, the magnet assembly 222 can be always surrounded by the voice coil assembly 221. In this way, the interaction between the magnetic field and the current between the voice coil assembly 221 and the magnet assembly 222 can be maintained, and the vibration of the magnet assembly 222 can be maintained, thereby allowing the bone conduction speaker 200 to perform bone conduction function for a long period of time.

[0160] In some embodiments, as shown in FIG. 16 , the vibration transmission sheet 223 may be located between the other of the voice coil assembly 221 and the magnet assembly 222 and the corresponding sealing plate 230, and the sealing plate 230 provides a rigid constraint on the deformation width of the vibration transmission sheet 223 along the central axis direction, and further provides a rigid constraint on the relative movement range between the voice coil assembly 221 and the magnet assembly 222.

[0161] Specifically, during the process of interaction between the voice coil assembly 221 and the magnet assembly 222, the other of the voice coil assembly 221 and the magnet assembly 222 affects the vibration transmission sheet 223, causing it to elastically deform. Therefore, by installing a sealing plate 230 on the surface of the vibration transmission sheet 223 facing away from the voice coil assembly 221 and the magnet assembly 222 to rigidly constrain the deformation width of the vibration transmission sheet 223, it is possible to prevent deformation exceeding the elastic limit of the vibration transmission sheet 223 during the process of it being driven and deforming, preventing the vibration transmission sheet 223 from transitioning from elastic deformation to plastic deformation, and protecting the vibration transmission sheet 223.

[0162] The sealing plate 230 can determine its fixed position based on the relative movement range between the voice coil assembly 221 and the magnet assembly 222 and the elastic limit of the vibration transmission sheet 223. In this way, the sealing plate 230 can restrict the relative movement range between the voice coil assembly 221 and the magnet assembly 222, so that the sealing plate 230 and the vibration transmission sheet 223 can jointly restrict the relative movement range between the voice coil assembly 221 and the magnet assembly 222 within the maximum relative movement range, and further protect the vibration transmission sheet 223, the voice coil assembly 221 and the magnet assembly 222, and can also improve the vibration effect of the bone conduction speaker 200.

[0163] In some embodiments, as shown in Figures 8 and 16, the vibration transmission sheet 223 may include a central fixed portion 2231, an annular fixed portion 2232 surrounding the outer periphery of the central fixed portion 2231, and a link assembly 2233 connected between the central fixed portion 2231 and the annular fixed portion 2232, wherein the annular fixed portion 2232 is connected to the cylindrical cover 210, and the central fixed portion 2231 is connected to the other of the voice coil assembly 221 and the magnet assembly 222.

[0164] The link assembly 2233 is capable of elastic deformation, and can elastically constrain the other of the voice coil assembly 221 and the magnet assembly 222 when a current is passed through the voice coil assembly 221. The elastic constraint can be understood as the relative movement of the other of the voice coil assembly 221 and the magnet assembly 222 within a relative movement range permitted by the elastic deformation of the link assembly 2233. The link assembly 2233 constrains the relative movement range between the voice coil assembly 221 and the magnet assembly 222 along the central axis direction, while allowing the voice coil assembly 221 and the magnet assembly 222 to return to their original position by elastic recovery after realizing the relative movement between them.

[0165] The vibration transmission sheet 223 has excellent elastic deformation capability because it includes the link assembly 2233, but is in communication with the interior of the cylindrical cover 210 and cannot form a sealed space together with the cylindrical cover 210. Therefore, the sealing plate 230 can close the cavity on the vibration transmission sheet 223 and form a sealed space together with the cylindrical cover 210. By installing it in this manner, the magnetic circuit performance of the bone conduction speaker 10 can be improved, and sound quality can be improved.

[0166] In a natural state, there is a gap between the central fixing portion 2231 and the corresponding sealing plate 230 in the central axis direction. The natural state is a state in which no current is flowing through the voice coil assembly 221, i.e., a state in which 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, by providing a gap between the central fixing portion 2231 and the corresponding sealing plate 230 in the central axis direction, the other of the voice coil assembly 221 and the magnet assembly 222 can have a space in which it can vibrate relative to the tubular cover 210 in the central axis direction, thereby enabling bone conduction to occur in the user's body via the tubular cover 210 and the housing assembly 100 in the central axis direction.

[0167] Optionally, in the natural state, the central fixing portion 2231 is closer to the other of the voice coil assembly 221 and the magnet assembly 222 in the central axial direction than the annular fixing portion 2232. In the natural state, the vibration transmitting sheet 223 may have a certain pre-deformation, that is, the link assembly 2233 of the vibration transmitting sheet 223 has a slight pre-deformation, thereby ensuring that the two vibration transmitting sheets 223 act on the magnet assembly 222 on both sides of the magnet assembly 222 in the natural state and ensure that the magnet assembly 222 is at the middle position of the cylindrical cover 210, so that the vibration of the magnet assembly 222 can be more stable in the subsequent vibration process.

[0168] In the present embodiment, the sealing plate 230 may be a flat plate, a concave plate whose intermediate position is recessed toward the magnet assembly 222 relative to the edge position, or a convex plate whose intermediate position protrudes away from the magnet assembly 222 relative to the edge position.

[0169] 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.

[0170] By defining a certain distance between the central fixing portion 2231 and the corresponding sealing plate 230, the driving assembly 220 can vibrate the central fixing portion 2231 within this distance, and further vibrate the cylindrical cover 210.

[0171] 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. As shown in FIG. 9, the distance between the central fixing portion 2231 and the corresponding sealing plate 230 is indicated by 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 may be 0.2 mm, 0.5 mm, or 0.7 mm. By setting the distance between the central fixing portion 2231 and the corresponding sealing plate 230 in this manner, the sealing plate 230 can correspondingly limit the vibration of the central fixing portion 2231 and the drive assembly 220, preventing the vibration amplitude of the drive assembly 220 from being too large, causing deformation of the link assembly 2233 beyond its allowable range and causing damage.

[0172] 8 and 9, the magnet assembly 222 may further include a magnet 2221 and two magnetically permeable plates 2222, which are respectively installed on two sides of the magnet 2221 and facing each other along the central axis of the magnet 2221. The magnetically permeable plates 2222 have a protrusion 2201 that protrudes toward the central fixed portion 2231, and the protrusion 2201 is fixedly connected to the central fixed portion 2231.

[0173] The magnetically permeable plate 2222 constrains the direction of the magnetic field of the magnet 2221 on two side surfaces that are placed back to back along the central axis of the magnet 2221, thereby improving the effect between the magnet 2221 and the voice coil 2211.

[0174] The two protrusions 2201 of the two magnetically permeable plates 2222 respectively protrude toward the central fixing parts 2231 of the two vibration transmitting sheets 223 facing the two magnetically permeable plates 2222, i.e., the directions of the two protrusions 2201 are opposite. By arranging the protrusions 2201 to be fixedly connected to the central fixing parts 2231, the two magnetically permeable plates 2222 and the two vibration transmitting sheets 223 can be stably fixedly connected, and the connection parts between the magnetically permeable plates 2222 and the vibration transmitting sheets 223 do not occupy too large a space within the link assembly 2233, thereby providing a sufficient area for the link assembly 2233 to elastically deform and further providing sufficient deformation space, thereby improving the elasticity of the vibration transmitting sheets 223.

[0175] In some embodiments, as shown in Figures 8 and 9, the voice coil assembly 221 may further include two pairs of voice coils 2211 spaced apart along the central axis, the cylindrical cover 210 is surrounded by the outer periphery of the two pairs of voice coils 2211, the projections of the two magnetically permeable plates 2222 along the radial direction of the bone conduction speaker 200 at least partially overlap the two pairs of voice coils 2211, and the current directions of the two pairs of voice coils 2211 are opposite to each other.

[0176] The radial direction of the bone conduction speaker 200 is indicated by arrow Y in FIG. 9. By setting the projections of the two magnetically permeable plates 2222 along the radial direction of the bone conduction speaker 200 so that they at least partially overlap the two sets of voice coils 2211, respectively, the interaction between the two magnetically permeable plates 2222 and the magnets 2221 and the two voice coils 2211 can be strengthened, making the magnet assembly 222 more sensitive. By passing current in the two voice coils 2211 in opposite directions, it can be ensured that the force-receiving directions of the two voice coils 2211 are the same under the interaction of the same magnets 2221. This allows the magnets 2221 to move in one direction under the action of the two voice coils 2211 and the magnetic field, and by changing the direction of the current in the two voice coils 2211, the magnets 2221 can be vibrated in the central axis direction.

[0177] In some embodiments, the storage space 211 is filled with a magnetic fluid, and the magnetic fluid occupies at least a portion of the storage space 211 .

[0178] A magnetic fluid is also called a magnetic liquid, a ferromagnetic fluid, or a magnetic liquid. A magnetic fluid has the fluidity of a liquid and the magnetic properties of a solid magnetic material. A magnetic fluid has better magnetic permeability than air, which can improve the magnetic field effect of the magnet assembly 222 and make the vibration of the magnet assembly 222 more sensitive. The presence of a magnetic fluid can also reduce the resistance of the relative movement between the voice coil assembly 221 and the magnet assembly 222, further improving the vibration effect and effectively improving the sound quality, thereby improving the bone conduction effect of the bone conduction speaker 200 and improving the sound quality effect of the speaker assembly 10.

[0179] Optionally, the magnetic fluid may not fill the storage space 211, and by installing it in this manner, the fluid resistance can be reduced and the bone conduction effect of the bone conduction speaker 200 can be improved.

[0180] In some embodiments, when the bone conduction speaker 200 vibrates along its axis, it vibrates the housing assembly 100, and the air conduction speaker 300 and the housing assembly 100 become a vibration load. In related art, the air conduction speaker 300 is usually installed laterally to the axis of the bone conduction speaker 200 (e.g., the air conduction speaker 300 is usually installed in a radial direction perpendicular to the axis of the bone conduction speaker 200). In this case, the mass of the air conduction speaker 300 biases the vibration of the bone conduction speaker 200, generating moments in two different directions in the speaker assembly 10, weakening the vibration of the bone conduction speaker 200 along the axis and reducing the volume of the bone conduction component of the earphone 1.

[0181] To solve the above problem, the following embodiment will exemplarily explain the position, structure, and other details related to the bone conduction speaker 200 and the air conduction speaker 300 of the speaker assembly 10.

[0182] 17 and 18, as described above, the bone conduction core module 200 and the air conduction core module 300 are installed in the housing assembly 100. The bone conduction core module 200, also called the bone conduction speaker 200, conducts sound to the user using bone conduction vibration. The air conduction core module 300, also called the air conduction speaker 300, conducts sound into the user's ear canal using the air vibration principle.

[0183] Optionally, an accommodation space 110 may be formed in the housing assembly 100. The bone conduction core module 200 is installed in the accommodation space 110 and can vibrate in a first vibration direction. The air conduction core module 300 is installed in the accommodation space 110 and is aligned with the bone conduction core module 200 along the first vibration direction and faces each other. Specifically, the air conduction core module 300 and the bone conduction core module 200 facing each other means that there is an overlapping area when the air conduction core module 300 and the bone conduction core module 200 are projected onto a reference horizontal plane perpendicular to the first vibration direction.

[0184] The first vibration direction of the bone conduction core module 200 may coincide with the central axis direction of the bone conduction core module 200, both of which are indicated by arrow X in FIG.

[0185] By installing the air conduction core module 300 in the first vibration direction of the bone conduction core module 200, the mass of the air conduction core module 300 can be more concentrated on the axis of the bone conduction core module 200, causing the bone conduction core module 200 to vibrate along the first vibration direction, and the influence of the air conduction core module 300 on the vibration bias of the bone conduction core module 200 can be weakened, so that the bone conduction core module 200 can better vibrate the housing assembly 100 in the first vibration direction, and the sound quality caused by the vibration of the bone conduction core module 200 is purer and in line with acoustic design principles. 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 can be reduced, the bone conduction effect of the bone conduction core module 200 can be improved, and the sound quality effect of the bone conduction component of the earphone 1 can be improved.

[0186] In some embodiments, the air conducting core module 300 can vibrate in a second vibration direction, the angle between the first vibration direction and the second vibration direction being between 70° and 100° or between 80° and 90°.

[0187] By setting the first vibration direction and the second vibration direction to be different and intersect each other, mutual interference between the air conduction core module 300 and the bone conduction core module 200 can be reduced, so that the air conduction core module 300 has a better sound output effect and the bone conduction core module 200 has a good bone conduction effect.

[0188] The angle between the first vibration direction and the second vibration direction may be 75°, 85°, or 95°. For example, optionally, the first vibration direction and the second vibration direction may be perpendicular to each other, i.e., 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 conducting core module 300, and the second vibration direction is indicated by arrow Y in FIG. 18.

[0189] By installing them in this manner, the mutual influence between the air conduction core module 300 and the bone conduction core module 200 is greatly reduced, making the vibrations of each less susceptible to the vibrations of the other, thereby improving the sound quality of the earphone 1.

[0190] 17 and 18 , housing assembly 100 may be provided with first side surface 107, second side surface 108, and vibration transmission surface 109 (i.e., the face rest side described above), and first side surface 107, second side surface 108, and vibration transmission surface 109 may not be flush with each other, and first side surface 107 and second side surface 108 are provided spaced apart in a direction perpendicular to the first vibration direction. Housing assembly 100 may be formed with sound emission holes 114 penetrating first side surface 107 and communicating with accommodation space 110, and with decompression holes 115 penetrating second side surface 108 and communicating with accommodation space 110.

[0191] The sound emission holes 114 and the decompression holes 115 each conduct at least a portion of the sound waves generated by the air conduction core module 300 to the external environment. The difference is that the sound emission holes 114 are usually installed facing or close to the user's ears, thereby conducting a portion of the sound waves generated by the air conduction core module 300 to the user's ears, and the decompression holes 115 release air that attenuates the vibration of the air conduction speaker 300 within the accommodation space 110, thereby achieving air pressure balance in the accommodation space 110 and reducing the impact on the vibration effect of the air conduction core module 300.

[0192] By locating the sound emitting holes 114 and the decompression holes 115 on the first side surface 107 and the second side surface 108, which are respectively disposed opposite to each other, the distance between the sound emitting holes 114 and the decompression holes 115 can be relatively increased, thereby reducing the mutual influence, particularly the interference cancellation, between the sound waves emitted from the decompression holes 115 and the sound waves conducted from the sound emitting holes 114, and improving the quality of the sound conducted from the sound emitting holes 114. In other embodiments, the positions of the sound emitting holes 114 and the decompression holes 115 formed on the housing assembly 100 can be adjusted inversely according to the specific positions of the human ears.

[0193] Optionally, the vibration transmission surface 109 may be perpendicular to the first vibration direction, and the bone conduction core module 200 transmits vibrations to the outside via the vibration transmission surface 109. By arranging them in this manner, the decompression holes 115, the sound emitting holes 114, and the vibration transmission surface 109 are not flush with each other, which reduces interference between the sound waves transmitted by the sound emitting holes 114, the sound waves emitted by the decompression holes 115, and the vibrations on the vibration transmission surface 109, thereby improving the sound quality of the speaker assembly 10.

[0194] 18, the air-conduction core module 300 may be arranged to overlap 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 arranged to be stacked along the first vibration direction. Optionally, the air-conduction core module 300 is fixedly connected to the bone-conduction core module 200.

[0195] By fixing the air conduction core module 300 to the bone conduction core module 200 along the first vibration direction, the bone conduction core module 200 can easily vibrate the air conduction core module 300, thereby reducing the impact of the counterweight of the air conduction core module 300 on the vibration of the bone conduction core module 200 and ensuring the bone conduction effect of the speaker assembly 10.

[0196] 19, an elastic buffer member 600 may be installed between the air-conduction core module 300 and the bone-conduction core module 200. The elastic buffer member 600 may be an elastic colloid (e.g., silica gel, rubber, etc.), a spring, an airbag, or a magnetic fluid. This installation reduces the influence and restriction of the air-conduction core module 300 on the vibration of the bone-conduction core module 200, allowing the bone-conduction core module 200 to vibrate more freely and improving the vibration effect, while the elastic buffer member 600 can protect the air-conduction core module 300.

[0197] In some embodiments, at least one of the air-conduction core module 300 and the bone-conduction core module 200 is fixed relative to the housing assembly 100. Optionally, the air-conduction core module 300 and the bone-conduction core module 200 are each fixedly connected to the housing assembly 100. This arrangement can improve the operational stability of the bone-conduction core module 200 and the air-conduction core module 300.

[0198] 20 , the air-conduction core module 300 may be spaced apart from the bone-conduction core module 200 in the first vibration direction. This reduces the effect of biasing the vibration of the bone-conduction core module 200 due to the weight of the air-conduction core module 300, while spaced apart from each other to reduce mutual influence between the vibrations of the two and reduce the possibility of vibration interference. Optionally, the air-conduction core module 300 may be fixedly connected to the housing assembly 100, so that when the bone-conduction core module 200 vibrates the housing assembly 100, the housing assembly 100 also vibrates the air-conduction core module 300.

[0199] Optionally, a partition wall 150 may be installed in the housing assembly 100, and the accommodation space 110 may include a first accommodation cavity 111 and a second accommodation cavity 112 separated by the partition wall 150. The bone conduction core module 200 is installed in the first accommodation cavity 111, and the air conduction core module 300 is installed in the second accommodation cavity 112.

[0200] 19, the housing assembly 100 includes a first housing 120, a second housing 130, and a third housing 140, where the second housing 130 and the first housing 120 are joined together to form a first receiving cavity 111 in cooperation with each other, and the third housing 140 is joined to the first housing 120 and the second housing 130, respectively, to form a second receiving cavity 112 in cooperation with the first housing 120. This arrangement allows for easy installation and removal of the speaker assembly 10.

[0201] Since the bone conduction core module 200 requires a highly sealed environment to ensure the bone conduction effect, installing 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 may be sealed, so that the first accommodating cavity 111 has higher airtightness.

[0202] Optionally, the shape and dimensions of the first housing cavity 111 may be adapted to the shape and dimensions of the bone conduction core module 200, thus reducing the dimensions of the speaker assembly 10 and facilitating the bone conduction core module 200 to vibrate the housing assembly 100 and transmit the vibrations to the user's body.

[0203] 20 , the air conduction core module 300 can vibrate in a second vibration direction, and the housing assembly 100 is formed with sound emission holes 114 and decompression holes 115 that communicate with the second accommodating cavity 112. The sound emission holes 114 conduct a portion of the sound waves generated by the air conduction speaker 300 to the outside of the speaker assembly 10, and the decompression holes 115 communicate the second accommodating cavity 112 with the external environment, thereby ensuring air pressure balance within the second accommodating cavity 112 and reducing the impact of air pressure accumulation on the acoustic effects of the air conduction speaker 300.

[0204] The sound emission holes 114 and the decompression holes 115 are respectively installed on two side walls spaced apart from each other in the second vibration direction of the housing assembly 100. By installing them in this manner, mutual interference between sound waves propagating from both the sound emission holes 114 and the decompression holes 115 can be reduced, thereby improving the sound quality effect of the speaker assembly 10.

[0205] 20, the bone-conduction core module 200 may have a first central axis X extending along a first vibration direction. The air-conduction core module 300 may vibrate in a 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°.

[0206] 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°. By installing them in this manner, the mutual influence between the vibrations of the bone conduction core module 200 and the air conduction core module 300 can be reduced, and the sound quality effect of the speaker assembly 10 can be ensured.

[0207] 20, second housing 130 may have contact area 131 that contacts the user's face when the earphones are worn. Seam 132 between first housing 120 and second housing 130 is located outside contact area 131. By locating seam 132 between first housing 120 and second housing 130 outside contact area 131 rather than in contact area 131, seam 132 is less likely to pinch the skin of the body when earphones 1 are used.

[0208] In some embodiments, the air-conduction core module 300 and the bone-conduction core module 200 may be installed side by side along the first vibration direction. Optionally, the projections of the bone-conduction core module 200 and the air-conduction core module 300 onto a reference plane perpendicular to the first vibration direction may have an overlapping region.

[0209] 21, the projection of the bone conduction core module 200 onto a reference plane perpendicular to the first vibration direction is shown at K in Fig. 21, and the projection of the air conduction core module 300 onto a reference plane perpendicular to the first vibration direction is shown at J in Fig. 21, with J and K having an overlapping portion. With the above installation, when the bone conduction core module 200 vibrates in the first vibration direction, the air conduction core module 300 can also vibrate together.

[0210] Since the structure of the bone conduction core module 200 is relatively compact and the mass is relatively concentrated and uniform, the vibration of the air conduction core module 300 is mainly caused by the diaphragm 310, which occupies a large space but has a light mass, and its mass is mainly concentrated on the side of the air conduction core module 300 away from the diaphragm 310, i.e., the side close to the magnetic circuit assembly 322, and the volume of the bone conduction core module 200 and the volume of the air conduction core module 300 are specifically designed according to the acoustic requirements, the overlap area between the bone conduction core module 200 and the air conduction core module 300 perpendicular to the first vibration direction is designed as follows:

[0211] Optionally, the area ratio between the overlapping region and the projection of the air conduction core module 300 onto the reference plane may be greater than 20%, greater than 40%, or greater than 60%. For example, the area ratio between the overlapping region and the projection of the air conduction core module 300 onto the reference plane may be 25%, 45%, 50%, or 100%.

[0212] Optionally, the area ratio between the overlapping region and the projection of the bone conduction core module 200 onto the reference plane is greater than 20%, greater than 40%, or greater than 60%. For example, the area ratio between the overlapping region and the projection of the bone conduction core module 200 onto the reference plane may be 25%, 45%, 50%, or 100%.

[0213] By arranging the air conduction core module 300 and the bone conduction core module 200 in this manner, it is possible to effectively ensure that most of the weight of the air conduction core module 300 is placed on the bone conduction core module 200 in the first vibration direction, and further reduce the influence of the air conduction core module 300 on the vibration of the bone conduction core module 200, thereby improving the vibration effect of the bone conduction core module 200 and improving the bone conduction sound quality effect of the bone conduction core module 200.

[0214] In some embodiments, as shown in Fig. 21, the distance between the projection of the center of mass of the bone conduction core module 200 onto a reference plane perpendicular to the first vibration direction and the projection of the center of mass of the air conduction core module 300 onto the reference plane may be less than 0.5 mm. The center of mass of the bone conduction core module 200 is shown at point O in Fig. 21, and the center of mass of the air conduction core module 300 is shown at point Q in Fig. 21.

[0215] The smaller 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 in the direction perpendicular to the first vibration direction, the smaller the influence of the weight of the air conduction core module 300 on the vibration bias of the bone conduction core module 200, resulting in a higher vibration effect and a higher sound quality effect.

[0216] Optionally, the distance may be 0 to 0.4 mm or 0 to 0.2 mm. For example, as shown in FIG. 20 , 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 may be 0 mm. That is, the centers of mass of the air-conduction core module 300 and the bone-conduction core module 200 completely overlap in the direction in which both the centers of mass of the air-conduction core module 300 and the bone-conduction core module 200 are in the first vibration direction, in other words, on a reference plane perpendicular to the first vibration direction. Therefore, by setting the distance between them in this manner, it is possible to reduce the differential moments due to vibration of the bone-conduction core module 200 and the air-conduction core module 300, thereby enabling the bone-conduction core module to have a better bone conduction effect and the speaker assembly 10 to have a better sound quality effect.

[0217] Of course, in other embodiments, the distance between the center of mass projection of the air conduction core module 300 and the center of mass projection of the bone conduction core module 200 on a reference plane perpendicular to the first vibration direction may further be 0.1 mm, 0.25 mm, 0.3 mm, etc., and this embodiment is not specifically listed here.

[0218] 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 0.5 mm or less. 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 becomes.

[0219] 20, the distance between the center of mass of the air conduction core module 300 and the first central axis X may be set to 0 mm. Setting the distance between the two in this manner also facilitates the bone conduction core module 200 to vibrate along the direction of the first central axis X, thereby enabling the bone conduction speaker 200 to have a better bone conduction effect and the speaker assembly 10 to have a better sound quality effect.

[0220] 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., and this embodiment is not specifically listed here.

[0221] In some embodiments, as shown in FIG. 21, the bone conduction core module 200 may be installed as a sealed structure, and the interior of the bone conduction core module 200 and the accommodating space 110 may be separated from each other.

[0222] 8 and 9, the bone conduction core module 200 may include a cylindrical cover 210, a driving assembly 220, and two sealing plates 230. The cylindrical cover 210 is fixedly connected to the housing assembly 100, and the driving assembly 220 is installed in the cylindrical cover 210, and the driving assembly 220 vibrates the cylindrical cover 210, which in turn vibrates the housing assembly 100. The two sealing plates 230 are installed on both ends of the cylindrical cover 210, respectively, and close the cylindrical cover 210 to form a sealed structure.

[0223] The driving assembly 220 vibrates within the sealed cylindrical cover 210, so that the driving assembly 220 is less susceptible to air resistance and other factors during vibration, thereby ensuring good bone conduction effect of the bone conduction core module 200. When the earphone 1 is dropped or subjected to impact, the closed cylindrical cover 210 can also prevent the driving assembly 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.

[0224] Optionally, the bone conduction core module 200 may include a vibration transmission sheet 223, the drive assembly 220 includes a voice coil assembly 221 and a magnet assembly 222, the voice coil assembly 221 is fitted in the magnet assembly 222, the vibration transmission sheet 223 fixedly connects 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 receives an electric signal to interact with the magnet assembly 222 to vibrate the magnet assembly 222, and the magnet assembly 222 vibrates the cylindrical cover 210 after interacting with the voice coil assembly 221, and the vibration transmission sheet 223 limits the position of the magnet assembly 222. Specifically, by covering the cylindrical cover 210 with two sealing plates 230 to form a sealed structure, the direction of the magnetic field can be better restricted, the vibration of the magnet assembly 222 can be made more sensitive, and the vibration transmission sheet 223 and the magnet assembly 222 can be prevented from falling outside the cylindrical cover 210.

[0225] In some embodiments, the magnetic fluid may occupy at least a portion of the interior space of the cylindrical cover 210. The magnetic fluid is also called a magnetic liquid, a ferromagnetic fluid, or a magnetic liquid. The magnetic fluid has the fluidity of a liquid and the magnetic properties of a solid magnetic material. The magnetic fluid has better magnetic permeability than air, which can improve the magnetic field effect of the magnet assembly 222 and 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 effect of the speaker assembly 10.

[0226] Optionally, the magnetic fluid does not have to fill the inner space of the cylindrical cover 210, and by installing it in this manner, the fluid resistance can be reduced and the bone conduction effect of the bone conduction core module 200 can be improved.

[0227] Based on the above embodiments, the earphone 1 may include the speaker assembly 10 of each of the above embodiments.

[0228] As described above, the present application arranges the air conduction core module 300 and the bone conduction core module 200 in the first vibration direction of the bone conduction core module 200, and arranges the air conduction core module 300 and the bone conduction core module 200 so that they are aligned along the first vibration direction and facing each other. This allows the mass of the air conduction core module 300 to be more concentrated on the axis of the bone conduction core module 200, and reduces the influence of the air conduction core module 300 on the vibration bias of the bone conduction core module 200. In this way, the air conduction core module 300 can move better when the bone conduction core module 200 vibrates, reducing the influence of the mass of the air conduction core module 300 on the vibration effect of the bone conduction core module 200, increasing the volume and improving the bone conduction effect of the speaker assembly, thereby improving the sound quality effect of the speaker assembly 10.

[0229] The above description is merely a partial example of the present application and is not intended to limit the scope of protection of the present application. Any conversion of an equivalent device or equivalent process based on the contents of the specification and drawings of the present application, or any direct or indirect application to other related technical fields, is also included in the patent protection scope of the present application. [Explanation of symbols]

[0230] 10 Speaker Assembly 20 ear hooks 30 Backsplash 120 1st Housing 140 Third Housing 130 Second Housing 200 Bone conduction speaker 300 Air Conduction Speaker 111 First Containment Cavity 112 Second Containment Cavity 110 Containment Space 103 1st side 104 Second side 105 Third side 113 Communication hole 114 Sound emission hole 150 Partition Wall 115 Decompression hole 201 Circumferential side 160 Sealing member 101 Supporting wall 310 Diaphragm 320 Drive Mechanism 330 Internal Acoustic Cavity 1111 1st bottom wall 1123 Third Bottom Wall 102 Position-restricted space 400 Decompression Passage 173 Sound guide hole 170 First Partition Wall 180 Second Partition Wall 181 2nd communication hole 172 1st communication hole 500 passage pipe 600 Elastic cushioning material 107 First aspect 108 Second aspect 109 Vibration transmission surface

Claims

1. a housing assembly having an accommodating space formed therein; a bone conduction core module installed in the accommodation space and vibrating in a first vibration direction; A speaker assembly comprising: the bone conduction core module and an air conduction core module arranged in the accommodation space and facing each other along the first vibration direction.

2. The speaker assembly according to claim 1 , wherein projections of the bone conduction core module and the air conduction core module onto a reference plane perpendicular to the first vibration direction have an overlapping region.

3. the area ratio between the overlapping region and the projection of the air conducting core module onto the reference plane is greater than 20%, greater than 40%, or greater than 60%; and / or 3. The speaker assembly according to claim 2, wherein an area ratio between the overlapping region and the projection of the bone conduction core module onto the reference plane is greater than 20%, greater than 40%, or greater than 60%.

4. The speaker assembly according to claim 1, wherein the air-conduction core module is disposed to overlap the bone-conduction core module along the first vibration direction.

5. The speaker assembly according to claim 4, wherein the air-conduction core module is fixedly connected to the bone-conduction core module.

6. The speaker assembly according to claim 4, wherein an elastic buffer member is installed between the air conduction core module and the bone conduction core module.

7. The speaker assembly according to any one of claims 1 to 3, wherein the air-conduction core module is disposed at a distance from the bone-conduction core module in the first vibration direction.

8. 8. The speaker assembly of claim 7, wherein a partition wall is installed in the housing assembly, the accommodating space includes a first accommodating cavity and a second accommodating cavity separated by the partition wall, the bone conduction core module is installed in the first accommodating cavity, and the air conduction core module is installed in the second accommodating cavity.

9. 9. The speaker assembly of claim 8, wherein the housing assembly includes a first housing, a second housing, and a third housing, the second housing and the first housing being joined together to form the first accommodating cavity, and the third housing being joined to the first housing and the second housing, respectively, to form the second accommodating cavity together with the first housing.

10. 10. The speaker assembly of claim 9, wherein the bone conduction core module has a first central axis extending along the first vibration direction, the air conduction core module vibrates in a second vibration direction and has a second central axis extending along the second vibration direction, an angle between the first central axis and the second central axis is 70° to 100°, the third housing is located on a side of the first housing away from the second housing in the first vibration direction, and a cross-sectional dimension of the third housing perpendicular to the first vibration direction gradually decreases or decreases in steps in a direction away from the second housing.

11. 10. The speaker assembly of claim 9, wherein the second housing has a contact area that contacts the user's face when worn, and the seam between the first housing and the second housing is located outside the contact area.

12. 9. The speaker assembly of claim 8, wherein the air-conducting core module vibrates in a second vibration direction, the housing assembly is formed with a sound emission hole and a decompression hole communicating with the second accommodating cavity, and the sound emission hole and the decompression hole are respectively installed on two side walls of the housing assembly spaced apart from each other in the second vibration direction.

13. The speaker assembly according to claim 8, wherein the shape and size of the first receiving cavity are adapted to the shape and size of the bone conduction core module.

14. 4. The speaker assembly according to claim 1, wherein at least one of the air conduction core module and the bone conduction core module is fixed relatively to the housing assembly.

15. The speaker assembly according to claim 1 , wherein the bone conduction core module is installed as a sealed structure, and the interior of the bone conduction core module and the receiving space are separated from each other.

16. 16. The speaker assembly of claim 15, wherein the bone conduction core module includes a cylindrical cover, a driving assembly, and two sealing plates, the cylindrical cover is fixedly connected to the housing assembly, the driving assembly is installed in the cylindrical cover, the driving assembly vibrates the cylindrical cover and further vibrates the housing assembly, and the two sealing plates are installed at both ends of the cylindrical cover, respectively, and close the cylindrical cover to form the sealed structure.

17. 17. The speaker assembly of claim 16, wherein the bone conduction core module includes a vibration transmission sheet, the driving assembly includes a voice coil assembly and a magnet assembly, the voice coil assembly is fitted into the magnet assembly, the vibration transmission sheet fixedly connects the cylindrical cover and the magnet assembly, and the voice coil assembly is fixedly connected to the cylindrical cover.

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

19. 2. The speaker assembly of claim 1, wherein the distance between the projection of the center of mass of the bone conduction core module onto a reference plane perpendicular to the first vibration direction and the projection of the center of mass of the air conduction core module onto 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, and the distance between the center of mass of the air conduction core module and the first central axis is 0.5 mm or less.

20. 20. The speaker assembly of claim 19, wherein the distance is between 0 and 0.4 mm or between 0 and 0.2 mm.

21. 2. The speaker assembly according to claim 1, wherein the air-conducting core module vibrates in a second vibration direction, and an angle between the first vibration direction and the second vibration direction is 70° to 100° or 80° to 90°.

22. 2. The speaker assembly of claim 1, wherein the housing assembly has a first side, a second side, and a vibration transmission surface, the first side, the second side, and the vibration transmission surface are not flush with each other, and the first side and the second side are installed at an interval in a direction perpendicular to the first vibration direction, the housing assembly is formed with a sound emission hole penetrating the first side and communicating with the accommodating space, and a decompression hole penetrating the second side and communicating with the accommodating space, the vibration transmission surfaces are perpendicular to the first vibration direction, and the bone conduction core module transmits vibrations to the outside via the vibration transmission surface.

23. a housing assembly having an accommodating space formed therein; a bone conduction core module installed in the accommodation space and vibrating in a first vibration direction; an air-conducting core module installed in the accommodation space; A speaker assembly characterized in that the air conduction core module and the bone conduction core module are installed side by side along the first vibration direction, the projections of the bone conduction core module and the air conduction core module onto a reference plane perpendicular to the first vibration direction have an overlapping area, and the area ratio of the overlapping area to the projection of the air conduction core module or the bone conduction core module onto the reference plane is greater than 20%, greater than 40%, or greater than 60%.

24. An earphone comprising a speaker assembly according to any one of claims 1 to 23.

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