A sound-generating device

Abstract

The present application mainly relates to a sound-emitting device, which includes an ear hook component, a sound pickup component and a channel component. The ear hook component is formed with a accommodating space and a connecting hole, the connecting hole connects the accommodating space with the outside world, the sound pickup component and the channel component are arranged in the accommodating space, the channel component includes a channel top wall, a channel bottom wall and a channel side wall, the channel top wall and the channel bottom wall are arranged opposite to each other, the channel side wall is connected between the channel top wall and the channel bottom wall to enclose a channel, the channel side wall is provided with a sound inlet hole connected to the channel, the channel bottom wall is provided with a sound outlet hole connected to the channel, the sound inlet hole is connected to the connecting hole, and the sound outlet hole is arranged adjacent to the sound pickup component, so that the sound can be transmitted to the sound pickup component through the connecting hole, the sound inlet hole, the channel and the sound outlet hole in sequence.

Description

[0001] This application is a divisional application of the Chinese patent application submitted to the China Patent Office on August 12, 2020, with application number 2020108087579 and invention name "Loudspeaker assembly, sound-emitting device and mesh assembly". Technical Field

[0002] The present application relates to the technical field of bone conduction equipment, and in particular to a sound-generating device. Background Art

[0003] Existing hearing aids are small amplifiers that amplify sounds that are normally inaudible, leveraging the hearing impaired's residual hearing to transmit the sound to the brain's auditory center. However, due to hearing loss or degeneration, traditional hearing aids have limited effectiveness in improving hearing for individuals with hearing impairments. Summary of the Invention

[0004] An embodiment of the present application provides a sound-emitting device, which includes an ear hook assembly, a sound pickup assembly and a channel member. The ear hook assembly is formed with a accommodating space and a connecting hole, the connecting hole connects the accommodating space with the outside world, the sound pickup assembly and the channel member are arranged in the accommodating space, the channel member includes a channel top wall, a channel bottom wall and a channel side wall, the channel top wall and the channel bottom wall are arranged opposite to each other, the channel side wall is connected between the channel top wall and the channel bottom wall to enclose a channel, the channel side wall is provided with a sound inlet hole connected to the channel, the channel bottom wall is provided with a sound outlet hole connected to the channel, the sound inlet hole is connected to the connecting hole, and the sound outlet hole is arranged adjacent to the sound pickup assembly, so that the sound can be transmitted to the sound pickup assembly through the connecting hole, the sound inlet hole, the channel and the sound outlet hole in sequence.

[0005] Optionally, the shortest distance from the sound inlet to the sound outlet through the channel is greater than or equal to 4 mm.

[0006] Optionally, the communicating hole is arranged in a slit shape, and the sound inlet hole is correspondingly arranged in a slit shape.

[0007] Optionally, the channel top wall and the channel bottom wall are arranged in parallel and spaced apart, and the height of the channel in the direction from the channel top wall to the channel bottom wall is 0.45-0.75 mm.

[0008] Optionally, the ear hook assembly includes a connecting component and an ear hook shell connected to the connecting component, the ear hook shell forms a accommodating space and a connecting hole, and a accommodating groove for accommodating the sound pickup assembly is further formed in the accommodating space, and the channel member covers the accommodating groove for pressing the sound pickup assembly in the accommodating groove.

[0009] Optionally, the ear hook shell includes a first ear hook shell and a second ear hook shell, the first ear hook shell is fixedly connected to the connecting part, the second ear hook shell includes a bottom wall and a side wall connected to the bottom wall, the first ear hook shell covers the side wall and is arranged opposite to the bottom wall to connect with the second ear hook shell to form an accommodating space, the bottom wall protrudes on one side toward the first ear hook shell and is provided with a flange that forms a accommodating groove, the connecting hole is opened on the side wall, the channel part is covered on the flange to press the pickup assembly into the accommodating groove, and the sound inlet hole faces the side wall and is connected to the connecting hole.

[0010] Optionally, the communication hole is opened on a side of the side wall away from the connecting component.

[0011] Optionally, the sound pickup assembly includes a sound pickup element and a protective cover. The protective cover is arranged on the outer periphery of the sound pickup element. The protective cover is provided with a groove facing the bottom wall of the channel. The sound pickup element is at least partially exposed in the groove. The protective cover abuts against the flange and fits tightly with the flange. The groove and the sound outlet hole are connected to each other.

[0012] Optionally, the sound-emitting device includes a windproof mesh cover, which abuts between the channel member and the ear hook shell, thereby separating the connecting hole and the sound inlet hole to prevent wind and reduce noise.

[0013] Optionally, the windproof mesh cover includes an iron mesh and a gauze mesh that are stacked together, and the gauze mesh is closer to the channel member than the iron mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of an embodiment of a sound-generating device provided by the present application;

[0015] Figure 2 This is a schematic diagram of the disassembled structure of an embodiment of a speaker assembly provided by the present application;

[0016] Figure 3 yes Figure 1 A schematic diagram of a cross-section structure along the AA cutting line;

[0017] Figure 4 yes Figure 1 Another cross-sectional structural diagram along the AA cutting line;

[0018] Figure 5 yes Figure 4 Schematic diagram of the disassembled structure of the middle protective gauze and the annular upper cover;

[0019] Figure 6 yes Figure 1 Another cross-sectional structural diagram along the AA cutting line;

[0020] Figure 7 This is a schematic diagram of the disassembled structure of an embodiment of the gauze assembly provided by the present application;

[0021] Figure 8 This is a schematic cross-sectional structural diagram of an embodiment of a gauze mesh assembly provided by the present application in a fitted state;

[0022] Figure 9 This is a schematic diagram of the preparation process of the gauze assembly provided in this application;

[0023] Figure 10 This is another schematic diagram of the preparation process of the gauze assembly provided by the present application;

[0024] Figure 11 yes Figure 2 A schematic diagram of the disassembled structure of an embodiment of a vibration assembly;

[0025] Figure 12 yes Figure 11 Schematic diagram of the cross-sectional structure of the vibration component after assembly;

[0026] Figure 13 yes Figure 11 Another structural schematic diagram of the vibrating plate in FIG.

[0027] Figure 14 yes Figure 1 A schematic diagram of the disassembled structure of an embodiment of a middle ear hook assembly;

[0028] Figure 15 yes Figure 13 A schematic diagram of the disassembled structure of an embodiment of the middle connecting component and the ear hook housing;

[0029] Figure 16 yes Figure 13 A schematic structural diagram of an embodiment of a second ear hook housing;

[0030] Figure 17 yes Figure 13 A schematic diagram of the disassembled structure of an embodiment of a middle channel member and a pickup assembly;

[0031] Figure 18 yes Figure 1 A schematic diagram of the circuit structure of an embodiment of a control circuit assembly;

[0032] Figure 19 yes Figure 1 A schematic diagram of the disassembled structure of another embodiment of the middle ear hook housing;

[0033] Figure 20 yes Figure 18 A schematic diagram of the disassembled structure of an embodiment of the middle function button and waterproof lining;

[0034] Figure 21 yes Figure 18 A schematic diagram of the cross-sectional structure of the middle ear hook assembly along the direction of toggling the function button;

[0035] Figure 22This is a schematic diagram of the relationship between the howling threshold of the sound pickup component in the sound-generating device provided by this application and its position. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] In this application, the sound-generating device 1 can be a device with acoustic output capability, such as a hearing aid, a listening bracelet, headphones, speakers, smart glasses, etc. In this embodiment, the sound-generating device 1 is described as a bone conduction headphone.

[0038] Existing hearing aids are small amplifiers that amplify sounds that would otherwise be inaudible, leveraging the hearing impaired's residual hearing to transmit the sound to the brain's auditory center. However, due to hearing loss or deterioration, traditional methods of transmitting sound through the ear canal offer limited improvement. After extensive research, the inventors of this application discovered that bone conduction technology can surpass traditional methods of transmitting sound through the ear canal, effectively improving the hearing of the hearing impaired and enabling them to receive clearer and more stable sound.

[0039] Bone conduction headphones convert audio into mechanical vibrations of varying frequencies, using human bones as a medium for transmitting these vibrations to the auditory nerve. This allows the user to receive sound without having to rely on the external auditory canal or eardrum. This application applies bone conduction technology to hearing aids, effectively addressing the shortcomings of existing technologies. Please refer to the following exemplary embodiments for details.

[0040] like Figure 1 As shown, the sound-producing device 1 may include two speaker assemblies 10, two earhook assemblies 20, and a rear-hook assembly 30. One end of each earhook assembly 20 is connected to a corresponding speaker assembly 10, that is, each earhook assembly 20 is connected to a speaker assembly 10. The rear-hook assembly 30 is connected between the other ends of the two earhook assemblies 20 facing away from their corresponding speaker assemblies 10. Of course, the sound-producing device 1 may also include one or more sound pickup assemblies 40.

[0041] The speaker assembly 10 is used to convert audio into mechanical vibrations of different frequencies. When the sound-emitting device 1 is worn, the speaker assembly 10 can be close to the user's head near the ear, and then the mechanical vibrations can be transmitted to the human auditory system through the bones of the head. The ear hook assembly 20 is used to be hung on the user's ear. Specifically, the two ear hook assemblies 20 can be respectively provided with a battery assembly 50 and a control circuit assembly 60, and the control circuit assembly 60 is used to control the operation of the entire sound-emitting device 1, such as volume control, switch / shutdown, headphone mode selection, wireless connection or data transmission, etc. The battery assembly 50 is used to power the entire sound-emitting device 1. When the sound-emitting device 1 is worn, the rear hanging assembly 30 can be wrapped around the back of the user's head. The rear hanging assembly 30 is connected between the other ends of the two ear hook assemblies 20, and the structure is reliable and stable, so that the sound-emitting device 1 can be worn stably.

[0042] Taking the example of this embodiment including multiple sound pickup assemblies 40, the multiple sound pickup assemblies 40 can be respectively installed in at least two of the two speaker assemblies 20 and the rear-mounted assembly 30, or multiple sound pickup assemblies 40 can be installed at intervals on the rear-mounted assembly 30. The multiple sound pickup assemblies 40 are spaced apart and independent from each other so that they can independently pick up sound and amplify signals. It should be noted that the "multiple" in this embodiment means "at least two," for example, "two," "three," "four," etc.

[0043] For example, one of the multiple sound pickup assemblies 40 is disposed on the rear hanging assembly 30 and can be disposed in the middle position of the rear hanging assembly 30. For example, at least two sound pickup assemblies 40 are disposed on the rear hanging assembly 30, and one of the sound pickup assemblies 40 is disposed in the middle position of the rear hanging assembly 30, and the remaining sound pickup assemblies 40 are spaced apart and disposed on one side or both sides of the middle position. For another example, this embodiment includes three sound pickup assemblies 40, wherein two sound pickup assemblies 40 are respectively disposed in the two ear hanging assemblies 20, and the other sound pickup assembly 40 is disposed in the rear hanging assembly 30. The above-mentioned sound pickup assemblies 40 are each independent and can independently perform sound pickup and signal amplification, and can further independently process sounds from different directions, so that the hearing impaired can adapt to sounds from different directions and improve the hearing effect of the hearing impaired.

[0044] In this embodiment, bone conduction technology is applied to hearing aid headphones. The speaker assembly 10 needs to have a good sound transmission effect. The speaker assembly 10 mainly uses mechanical vibration to transmit audio signals. Under normal circumstances, if there are large air vibrations in the speaker assembly 10, it may affect the sound transmission effect of the mechanical vibration of the bone conduction speaker 12, reduce the sound quality, and further affect the hearing effect of the hearing-impaired. The speaker assembly 10 in this embodiment can refer to the description of the embodiment of the speaker assembly 10 of the present application below. Of course, the speaker assembly 10 of the present application below can also be applied to other types of bone conduction headphones and is not limited to the sound-generating device 1 described in the above embodiment.

[0045] like Figures 2 to 6 As shown, the speaker assembly 10 may include a speaker housing 11, a bone conduction speaker 12, and a protective mesh 13. The bone conduction speaker 12 may be housed in the speaker housing 11. The protective mesh 13 may be supported on the speaker housing 11 to protect the bone conduction speaker 12.

[0046] like Figure 2 As shown, the speaker housing 11 may be formed with a receiving chamber 110 having an opening 111. The side of the speaker housing 11 having the opening 111 is configured to be positioned close to the user's head. The receiving chamber 110 is configured to accommodate the bone conduction speaker 12. Mechanical vibrations generated by the bone conduction speaker 12 may be transmitted to the user's head through the opening 111.

[0047] Optionally, the inner wall of the speaker housing 11 may be provided with an annular support 112. The inner wall of the speaker housing 11 refers to the inner wall of the speaker housing 11 that encloses the accommodating cavity 110. The annular support 112 may be provided adjacent to the opening 111. The annular support 112 may be used to support the protective screen 13. In some embodiments, when the protective screen 13 is supported on the annular support 112, the protective screen 13 may cover or substantially cover the opening 111, thereby protecting the bone conduction speaker 12.

[0048] like Figure 2 As shown, the bone conduction speaker 12 may include a vibration component 121 and a vibration plate 122. Specifically, the vibration component 121 may be accommodated in the accommodating cavity 110. The vibration plate 122 is connected to the vibration component 121 and is exposed through the opening 111. In other words, the vibration plate 122 is exposed outside the accommodating cavity 110 through the opening 111, and the bone conduction speaker 12 as a whole forms an effect of protruding from the inside of the speaker housing 11 to the outside of the speaker housing 11, and the vibration plate 122 protrudes from the opening 111 and is thus exposed. When receiving an audio signal, the vibration component 121 can convert the audio signal into mechanical vibration. The vibration plate 122 connected to the vibration component 121 can transmit the vibration of the bone conduction speaker 12 to the human auditory nerve through the user's head.

[0049] like Figure 2 As shown, the protective gauze 13 is arranged at the open end of the speaker housing 11 and fits the vibration surface of the vibration plate 122. As an example, the protective gauze 13 may include a fitting portion 131, a cylindrical accommodating portion 132 and an annular support portion 133. The vibration plate 122 may be arranged in the cylindrical accommodating portion 132. The fitting portion 131 is used to seal one end of the cylindrical accommodating portion 132 and fits the outer end face of the vibration plate 122. Specifically, one end of the cylindrical accommodating portion 132 may refer to the end of the cylindrical accommodating portion 132 away from the accommodating cavity 110, and the other end of the cylindrical accommodating portion 132 may refer to the end of the cylindrical accommodating portion 132 close to the accommodating cavity 110. The outer end face of the vibration plate 122 refers to the end face away from the accommodating cavity 110, or the end face away from the vibration component 121. During the specific assembly process, the protective mesh 13 can be used to cover the opening 111, and the vibration plate 122 exposed at the opening 111 can be inserted into the cylindrical accommodating portion 132, and then the outer end surface of the vibration plate 122 can be affixed to the affixed portion 131. The annular support portion 133 can be connected to the other end of the cylindrical accommodating portion 132 and extend outward from the cylindrical accommodating portion 132. The annular support portion 133 is used to support the open end of the speaker housing 11. Specifically, the annular support portion 133 can be supported on the annular support base 112.

[0050] By applying bone conduction technology to hearing aids, the problem of limited improvement in the hearing effect of the hearing impaired by the traditional sound transmission method of traditional hearing aids can also be solved. Moreover, by setting the vibration plate 122 connected to the vibration component 121 to be exposed through the opening 111, and using the protective mesh 13 to fit the vibration plate 122, the vibration plate 122 can be made closer to the user's head, and the vibration of the exposed vibration plate 122 can be transmitted to the user's bones more quickly and more powerfully. The mechanical vibration of this embodiment is more complete and not easy to lose the frequency band, which can effectively improve the hearing effect of the hearing impaired. Moreover, due to its mesh structure, the protective mesh 13 can allow the air inside and outside the accommodating chamber 110 to circulate with each other during the above-mentioned mechanical vibration process to balance the air pressure difference inside and outside the accommodating chamber 110, thereby reducing the sound generated by the vibration of the air in the accommodating chamber 110, and attenuating the sound generated by the air vibration other than the mechanical vibration of the vibration plate 122, thereby reducing the sound leakage phenomenon. Compared with the structure that closes the accommodating cavity 110 , the protective mesh 13 can also reduce the impact of air vibration in the accommodating cavity 110 on the vibration of the vibration transmitting plate 122 , thereby effectively improving the sound quality and sound effect of the sound-generating device 1 .

[0051] like Figure 2As shown, in order to further enable the annular support portion 133 to be stably supported on the annular base 112, the speaker assembly 10 may include an annular upper cover 14, which is used to press the annular support portion 133 on the annular base 112. This can reduce the risk of the annular support portion 133 being easily torn off, and allows the protective mesh 13 to be stably supported on the annular base 112.

[0052] Regarding the positional relationship and support structure between the annular upper cover 14, the annular support portion 133, and the annular support platform 112, there are several implementations as follows:

[0053] The first implementation method: Figure 3 As shown, the annular support portion 133 can be clamped between the annular upper cover 14 and the annular base 112, wherein the outer surface of the annular support portion 133 is close to the annular upper cover 14, and the inner surface of the annular support portion 133 is close to the annular base 112. In this embodiment, the inner surface of the protective mesh 13 refers to the surface that contacts the outer end surface of the vibration transmission plate 122. The inner surface of the annular support portion 133 refers to the portion of the inner surface of the protective mesh 13 within the annular support portion 133. Correspondingly, the outer surface of the protective mesh 13 is disposed opposite the inner surface. The outer surface of the annular support portion 133 refers to the portion of the outer surface of the protective mesh 13 within the annular support portion 133. Specifically, the annular upper cover 14 directly presses the outer surface of the annular support portion 133, thereby pressing the inner surface of the annular support portion 133 against the annular base 112. In other words, the annular support portion 133 extends from the inner side to the outer side of the gap between the annular upper cover 14 and the annular base 112 . Figure 3 Part of the structure in Figure 1 is shown, but the vibration component 121 is not shown.

[0054] Optionally, an adhesive layer may be provided between the inner surface of the annular support portion 133 and the annular support platform 112, thereby directly or indirectly bonding and fixing the annular support portion 133 and the annular support platform 112. An adhesive layer may also be provided between the outer end surface of the vibration plate 122 and the fitting portion 131, thereby bonding and fixing the vibration plate 122 and the fitting portion 131. In the actual assembly process, the protective mesh 13 may be directly or indirectly bonded to the vibration plate 122 and the speaker housing 11 at the same time by glue, thereby forming the above-mentioned adhesive layer, and then the annular upper cover 14 is covered on the annular support portion 133. Of course, an adhesive layer may also be provided between the outer surface of the annular support portion 133 and the annular upper cover 14, thereby bonding and fixing the annular support portion 133 and the annular upper cover 14.

[0055] The first embodiment is used to fix the protective gauze 13, which has a simple structure, is easy to assemble, and provides relatively stable support for the protective gauze 13.

[0056] The second implementation method: Figure 6 As shown, the inner surface of the annular support portion 133 can cover the annular upper cover 14, and the annular support portion 133 further bends and extends between the annular upper cover 14 and the annular base 112, with the outer surface of the annular support portion 133 close to the annular base 112. Specifically, the inner surface of the annular support portion 133 covers the annular upper cover 14 and then extends from the outside of the gap between the annular upper cover 14 and the annular support portion 133 to the inside. Figure 6 Part of the structure in Figure 1 is shown, but the vibration component 121 is not shown.

[0057] Specifically, the annular support portion 133 may include an annular sub-portion 1331 and a bent sub-portion 1332. The annular sub-portion 1331 is connected to the cylindrical accommodating portion 132 and extends toward the outside of the cylindrical accommodating portion 132. The bent sub-portion 1332 is connected to the edge of the annular sub-portion 1331 extending toward the outside of the cylindrical accommodating portion 132, that is, the bent sub-portion 1332 is connected to the edge of the annular sub-portion 1331 extending toward the outside of the cylindrical accommodating portion 132 and extends in a direction away from the edge of the annular sub-portion 1331. Optionally, there may be a plurality of bent sub-portions 1332, each extending outward from the edge of the annular sub-portion 1331, and the bent sub-portions 1332 may be spaced apart from the edge of the annular sub-portion 1331. Optionally, the bent sub-portion 1332 may also be in the form of a continuous ring, extending outward from the edge of the annular sub-portion 1331.

[0058] The annular sub-portion 1331 can cover the annular upper cover 14, and the bent sub-portion 1332 extends from the annular sub-portion 1331 to between the annular upper cover 14 and the annular platform 112. The inner surface of the annular support portion 133 is in close proximity to the annular upper cover 14. Specifically, the inner surface of the annular sub-portion 1331 and the inner surface of the bent sub-portion 1332 are in close proximity to the annular upper cover 14. The outer surface of the annular support portion 133 is in close proximity to the annular platform 112. Specifically, the outer surface of the bent sub-portion 1332 is in close proximity to the annular platform 112.

[0059] Optionally, an adhesive layer can be provided between the outer surface of the annular support portion 133 and the annular support platform 112, thereby bonding the annular support portion 133 and the annular support platform 112 to be fixed. An adhesive layer can also be provided between the outer end surface of the vibration plate 122 and the fitting portion 131, thereby bonding the vibration plate 122 and the fitting portion 131 to be fixed. In the actual assembly process, the protective gauze 13 can first cover the annular upper cover 14, and then be bonded to the vibration plate 122 and the speaker housing 11 at the same time by glue, thereby forming the above-mentioned adhesive layer. Of course, an adhesive layer can be provided between the inner surface of the annular support portion 133 and the annular upper cover 14, thereby bonding the annular support portion 133 and the annular upper cover 14 to be fixed.

[0060] The protective mesh 13 is fixed by the second embodiment. Compared with the first embodiment mentioned above, by wrapping the inner surface of the annular support part 133, the gap formed between the protective mesh 13 and the inner side surface of the annular upper cover 14 (the side facing the accommodating cavity 110) can be avoided. Furthermore, on the basis of effectively supporting the annular support part 133, dust can be prevented from accumulating on the above-mentioned gap to cause blockage of the protective mesh 13, thereby reducing the failure rate of the sound-emitting device 1.

[0061] The third implementation method: Figure 4 and Figure 5 As shown, the annular upper cover 14 may include a first cover 141 and a second cover 142 stacked together. The first cover 141 is closer to the annular platform 112 than the second cover 142, and the second cover 142 is supported on the annular platform 112. The annular support portion 133 is sandwiched between the first cover 141 and the second cover 142. Specifically, the inner surface of the annular support portion 133 is close to the first cover 141, and the outer surface of the annular support portion 133 is close to the second cover 142. Figure 4 Part of the structure in Figure 1 is shown, but the vibration component 121 is not shown.

[0062] Optionally, the protective mesh 13 can be formed into a whole with the annular upper cover 14 using the laminating technology. The material of the annular upper cover 14 is hard glue, such as plastic, and its hardness is greater than the hardness of the protective mesh 13. For example, the protective mesh 13 is first formed, and then the protective mesh 13 is placed in the mold corresponding to the annular upper cover 14, and then the annular upper cover 14 is formed, so that the first cover body 141 and the second cover body 142 can clamp the annular support part 133. Of course, the connection method between the protective mesh 13 and the annular upper cover 14 can also be: an adhesive layer can be provided between the inner surface of the annular support part 133 and the first cover body 141 (glue is applied and solidified to form an adhesive layer), so that the annular support part 133 and the first cover body 141 are bonded and fixed. An adhesive layer is provided between the outer surface of the annular support part 133 and the second cover body 142, so that the annular support part 133 and the second cover body 142 are bonded and fixed.

[0063] After the protective mesh 13 and the annular upper cover 14 are formed into an integral unit, an adhesive layer can be provided between the first cover 141 and the annular support 112 to bond and secure the first cover 141 to the annular support 112. An adhesive layer can also be provided between the outer end surface of the vibration transmission plate 122 and the fitting portion 131 to bond and secure the vibration transmission plate 122 to the fitting portion 131.

[0064] The third embodiment is similar to the first embodiment, and the third embodiment can also be changed to be similar to the second embodiment, that is, the inner surface of the annular support portion 133 covers the second cover body 142, and the annular support portion 133 is further bent and extended between the first cover body 141 and the second cover body 142.

[0065] By setting up the annular upper cover 14 including the first cover body 141 and the second cover body 142, the first cover body 141 and the second cover body 142 can be made into one piece with the protective mesh 13 in advance, which is convenient for later assembly with the speaker shell 11. The clamping of the first cover body 141 and the second cover body 142 can make the fixation of the protective mesh 13 more stable.

[0066] After long-term research, the inventors of this application found that if the opening 111 is blocked, for example, by using silicone to cover the entire speaker housing 11, the air in the accommodating cavity 110 will also vibrate and produce sound. Specifically, the speaker assembly 10 will cause a large natural frequency resonance peak in the range of 20-20000 Hz when working, resulting in serious sound leakage and possible howling, thereby reducing the sound enhancement effect of the bone conduction speaker 12.

[0067] This embodiment uses a protective mesh 13 with a mesh structure to allow air to circulate inside and outside the accommodating cavity 110 instead of blocking the opening 111, which can effectively reduce the resonance peak and thus effectively reduce the sound leakage. The protective mesh 13 of the present application has multiple meshes, which can be distributed in part of the protective mesh 13 or throughout the entire protective mesh 13, specifically including a fitting portion 131, a cylindrical accommodating portion 132 and an annular supporting portion 133. However, due to the dense and fine mesh structure, the mesh is relatively small. Figure 2-Figure 8 The mesh is not specifically shown.

[0068] Furthermore, after long-term continuous experiments, the inventors of the present application found that the mesh number of the protective gauze 13 is 250-600 meshes, and the thickness of the protective gauze 13 is 0.01mm-0.3mm, which can more effectively reduce sound leakage and ensure the strength of the protective gauze 13. Optionally, the mesh number of the protective gauze 13 is 300-500 meshes. Optionally, the mesh number of the protective gauze 13 is 380-480 meshes. Optionally, the mesh number of the protective gauze 13 is 400-430 meshes. Optionally, the thickness of the protective gauze 13 is 0.05mm-0.25mm. Optionally, the thickness of the protective gauze 13 is 0.1mm-0.2mm. Optionally, the thickness of the protective gauze 13 is 0.125mm-0.15mm.

[0069] The material of the protective mesh 13 may be at least one of PC (polycarbonate), PET (polyethylene terephthalate), and nylon.

[0070] The protective mesh 13 of this embodiment can be formed by thermoplastic molding, thereby forming a structure including a fitting portion 131, a cylindrical accommodating portion 132, and an annular supporting portion 133. Specifically, the following embodiments can be used to improve the yield rate and structural stability of the protective mesh 13.

[0071] The mesh assembly embodiment of the present application can be applied to the above-mentioned speaker assembly embodiment of the present application, such as Figure 7 As shown, this embodiment may include a protective gauze 13 and an auxiliary lining material 15 that are arranged in contact with each other.

[0072] like Figures 7 to 9 As shown, the protective gauze 13 and the auxiliary lining material 15 can be formed by hot pressing, so that the hot-pressed protective gauze 13 includes a fitting portion 131, a cylindrical accommodating portion 132, and an annular support portion 133. The fitting portion 131 is used to seal one end of the cylindrical accommodating portion 132, and the annular support portion 133 is connected to the other end of the cylindrical accommodating portion 132 and extends outward from the cylindrical accommodating portion 132. The auxiliary lining material 15 has a harder hardness than the protective gauze 13 and is arranged conformally with the protective gauze 13, thereby supporting the protective gauze 13 to maintain its shape after hot pressing. The auxiliary lining material 15 can be made of plastic.

[0073] Because the hardness of the auxiliary lining material 15 is greater than that of the protective mesh 13, when the protective mesh 13 and the auxiliary lining material 15 are thermoformed together, the auxiliary lining material 15 and the protective mesh 13 are deformed to the corresponding shape together. At this time, the auxiliary lining material 15 is arranged conformally, and the auxiliary lining material 15 can support the protective mesh 13 to maintain the corresponding shape. During assembly, the protective mesh 13 is assembled to the speaker housing 11.

[0074] The protective gauze 13 is formed using the above-mentioned solution of this embodiment. There are two specific preparation methods as follows:

[0075] like Figure 9 As shown, the first preparation method comprises the following steps:

[0076] S11: Prepare the original gauze 13A and the original lining material 15B, and attach them to each other;

[0077] S12: stamping the original gauze 13A and the original lining material 15B that are bonded to each other to obtain the protective gauze 13 and the auxiliary lining material 15 of a predetermined size;

[0078] S13: After laminating the protective gauze 13 and the auxiliary lining material 15, hot pressing is performed. The auxiliary lining material 15 and the protective gauze 13 are conformed to each other so that the auxiliary lining material 15 can support the protective gauze 13 to maintain its shape after hot pressing. The hot-pressed protective gauze 13 includes a laminating portion 131, a cylindrical accommodating portion 132, and an annular support portion 133. The laminating portion 131 is used to block one end of the cylindrical accommodating portion 132. The annular support portion 133 is connected to the other end of the cylindrical accommodating portion 132 and extends outward from the cylindrical accommodating portion 132.

[0079] S14: Peel off the auxiliary lining material 15 to obtain the protective gauze 13.

[0080] like Figure 10 As shown, the second preparation method comprises the following steps:

[0081] S21: Prepare original gauze 13A and original lining material 15B;

[0082] S22: hot pressing the original gauze 13A and the original lining material 15B that are bonded to each other, so that the hot pressed original gauze 13A and the original lining material 15B are conformal to each other, so that the original lining material 15B can support the original gauze 13A to maintain the shape after hot pressing;

[0083] S23: The original gauze 13A and the original lining material 15B after hot pressing are subjected to stamping and forming, thereby obtaining a conformally arranged protective gauze 13 and an auxiliary lining material 15, wherein the protective gauze 13 includes a fitting portion 131, a cylindrical accommodating portion 132, and an annular support portion 133, wherein the fitting portion 131 is used to block one end of the cylindrical accommodating portion 132, and the annular support portion 133 is connected to the other end of the cylindrical accommodating portion 132 and extends outward from the cylindrical accommodating portion 132;

[0084] S24: Peel off the auxiliary lining material 15 to obtain the protective gauze 13.

[0085] In this embodiment, the protective mesh 13 is assisted in hot pressing by using an auxiliary lining material 15. Since the hardness of the auxiliary lining material 15 is greater than that of the protective mesh 13, after hot pressing, the auxiliary lining material 15 can support the protective mesh 13 to maintain its shape after hot pressing, thereby obtaining a protective mesh 13 with stable shape and structure, improving the yield rate and structural stability of the protective mesh 13, and facilitating subsequent assembly into the corresponding speaker housing 11. Moreover, since the protective mesh 13 can effectively maintain its shape after hot pressing, it can adapt to the structure and shape of the bone conduction speaker 12 and can effectively fit the outer end surface of the vibration plate 122. The stable mesh structure of the protective mesh 13 can allow air to circulate inside and outside the accommodating cavity 110, thereby reducing the sound generated by the vibration of the air in the accommodating cavity 110, attenuating the sound generated by the air vibration other than the mechanical vibration of the vibration plate 122, and thus reducing sound leakage. Compared with the structure that closes the accommodating cavity 110, the protective mesh 13 reduces sound leakage of the speaker assembly 10. That is, the gauze assembly of this embodiment can improve the structural stability of the protective gauze 13, which helps to enhance the hearing aid effect of the sound-generating device 1.

[0086] like Figure 11 and Figure 12 As shown, the vibration assembly 121 may include a magnet group 1211, a magnetic cover 1212, a coil 1213, a vibration plate 1214, an outer bracket 1215 and an inner bracket 1216. The magnet group 1211 has a magnetization direction so as to form a relatively stable magnetic field. The magnet group 1211 may be a single magnet or a combination of multiple magnets (e.g. Figure 11 The magnet assembly 1211 shown has three stacked magnets. The magnetic shield 1212 is primarily used to adjust the magnetic field generated by the magnet assembly 1211, thereby increasing the utilization rate of this magnetic field. The coil 1213 is located within the magnetic field formed by the magnet assembly 1211, the magnetic shield 1212, and the like. When stimulated by an electrical signal (e.g., an audio signal), it generates an Ampere force, which in turn drives the vibrating plate 1214 to generate mechanical vibrations. The outer bracket 1215 and the inner bracket 1216 cooperate to support the aforementioned structural components.

[0087] The magnetic shield 1212 may include a cylindrical shield side portion 12121 and a shield bottom portion 12122. The shield bottom portion 12122 is connected to one end of the shield side portion 12121 to form a cylindrical groove 12123. The magnet group 1211 is disposed within the cylindrical groove 12123 and may be fixedly connected to the magnetic shield 1212 by one or a combination of methods such as magnetic attraction, gluing, snap-fitting, and threaded connection. For example, the magnet group 1211 may include a plurality of stacked magnets, and the vibration assembly 121 may further include a fixing member 1217 for fixing the plurality of magnets of the magnet group 1211. Furthermore, the magnet group 1211 is further fixed to the shield bottom portion 12122 by methods such as magnetic attraction, gluing, etc. As an example, the fixing member 1217 may include a bolt 12171 and a nut 12172. The nut 12172 is embedded within the bottom 12122 of the housing, and the bolt 12171 can sequentially pass through the magnet group 1211 and out or approximately to the bottom 12122 of the housing. The nut 12172 and the bolt 12171 are threadedly engaged to hold the magnets of the magnet group 1211 together. With this arrangement, since the nut 12172 is embedded within the bottom 12122 of the housing, the dimension of the vibration assembly 121 in the axial direction of the barrel groove 12123 is compressed, which helps control the overall size of the bone conduction speaker 12. Of course, if the overall size allows, the nut 12172 can also be positioned on the side of the bottom 12122 of the housing facing away from the barrel groove 12123, thus achieving relative fixation between the magnet group 1211 and the magnetic shield 1212.

[0088] Of course, the fixing member 1217 can also fix the magnet group 1211 and the magnetic cover 1212 together. In this case, a colloid ( Figure 11 and Figure 12 (not shown) so that the gap between the two can be filled and the relative fixation of the two is more stable, thereby preventing the magnet group 1211 and the magnetic cover 1212 from moving relative to each other under mechanical vibration and generating noise.

[0089] When the magnet group 1211 and the magnetic cover 1212 are relatively fixed, a gap is formed between the two in the radial direction of the cylindrical groove 12123 ( Figure 12 (not marked in the figure), this gap primarily accommodates coil 1213 after vibrating assembly 121 is assembled. Therefore, in the radial direction of cylindrical slot 12123, the size of the gap between magnet assembly 1211 and magnetic shield 1212 is as uniform as possible to increase the uniformity of the magnetic field distribution, thereby increasing the stability of the Ampere force generated by coil 1213 under the action of the magnetic field.

[0090] The coil 1213 is fixed to the inner bracket 1216 and is sleeved on the outer periphery of the magnet group 1211. After the vibration assembly 121 is assembled, the coil 1213 can be inserted into the gap formed by the magnet group 1211 and the magnetic shield 1212 in the radial direction of the cylindrical groove 12123, so that the coil 1213 is in the magnetic field formed by the magnet group 1211, the magnetic shield 1212, etc., and thus generates an Ampere force under the excitation of the electrical signal. It should be noted that in order to increase the smoothness of the Ampere force generated by the coil 1213 under the action of the magnetic field, the spacing between the coil 1213 and the magnet group 1211 or the magnetic shield 1212 in the radial direction of the cylindrical groove 12123 is as equal as possible. In other words, during the early processing and later assembly of the vibration assembly 121, the coaxiality of the structural components such as the magnet group 1211, the magnetic shield 1212, and the coil 1213 should be maintained as much as possible.

[0091] As an example, one end of the inner bracket 1216 (specifically, the end facing the magnet group 1211) is formed with a cover groove 12161. The coil 1213 is fixed to one end of the inner bracket 1216 and surrounds the cover groove 12161. One end of the inner bracket 1216 is covered by the magnet group 1211, allowing the magnet group 1211 to partially extend into the cover groove 12161. The coil 1213 is sleeved around the outer periphery of the magnet group 1211. This arrangement allows the size of the vibration assembly 121 in the axial direction of the cylindrical groove 12123 to be compressed while meeting the sound production requirements of the vibration assembly 121, which helps to control the overall size of the bone conduction speaker 12.

[0092] Furthermore, the vibration plate 1214 connects the outer bracket 1215 and the inner bracket 1216 and is used to limit the relative movement of the outer bracket 1215 and the inner bracket 1216 along the radial direction of the barrel groove 12123 to facilitate the assembly of the vibration component 121.

[0093] As an example, the outer bracket 1215 is arranged in a cylindrical shape, one end of the outer bracket 1215 is fixed to the other end of the cover side 12121 away from the cover bottom 12122, and the other end of the outer bracket 1215 away from the magnetic cover 1212 and the other end of the inner bracket 1216 away from the magnet group 1211 are connected through the vibration plate 1214.

[0094] In the related art, the outer bracket 1215 and the magnetic cover 1212 are generally fixedly connected by one of the following methods: gluing, clamping, threading, etc., or a combination thereof. This can easily lead to assembly errors between the outer bracket 1215 and the magnetic cover 1212, that is, the coaxiality between the two is difficult to ensure. At this time, because the inner bracket 1216 is connected to the outer bracket 1215 via the vibration plate 1214, an assembly error occurs between the inner bracket 1216 and the magnetic cover 1212 due to the assembly error between the outer bracket 1215 and the magnetic cover 1212, resulting in a decrease in the coaxiality between the coil 1213 and the magnet group 1211 and the magnetic cover 1212. This in turn leads to a decrease in the stability of the Ampere force generated by the coil 1213 under the action of the magnetic field, that is, the stability of the mechanical vibration generated by the coil 1213 driving the vibration plate 1214 deteriorates, thereby affecting the sound quality of the vibration assembly 121.

[0095] Unlike related art, in this application, the outer bracket 1215 is fixed to the other end of the cover side 12121 away from the cover bottom 12122 by injection molding. In other words, the outer bracket 1215 and the magnetic cover 1212 can be a metal insert injection-molded integral part. This arrangement can effectively reduce the assembly error between the outer bracket 1215 and the magnetic cover 1212, ensure the coaxiality of the magnet assembly 1211, the magnetic cover 1212, the coil 1213 and other structural components, and thus improve the sound quality of the vibration assembly 121.

[0096] Furthermore, a first boss 12151 is protruding from the other end of the outer bracket 1215 away from the magnetic cover 1212. Correspondingly, a first through hole 12141 corresponding to the first boss 12151 is provided on the vibration plate 1214. The first boss 12151 can be movably inserted into the first through hole 12141. The number of first bosses 12151 and first through holes 12141 can be multiple. The other end of the inner bracket 1216 can be movably embedded in the vibration plate 121, so as to cooperate with the first boss 12151 and the first through hole 12141 to limit the relative movement of the outer bracket 1215 and the inner bracket 1216 along the radial direction of the barrel groove 12123. There are many situations in which the other end of the inner bracket 1216 and the vibration plate 121 can be movably embedded, and some corresponding examples are provided below.

[0097] In an optional case, the other end of the inner bracket 1216 facing away from the magnet group 1211 may be provided with a second boss 12162. The vibration plate 1214 may be provided with a second through hole 12142, and the second boss 12162 may be movably inserted into the second through hole 12142. By the first boss 12151 cooperating with the first through hole 12141 and the second boss 12162 cooperating with the second through hole 12142, the relative movement of the outer bracket 1215 and the inner bracket 1216 along the radial direction of the barrel groove 12123 can be limited, while the inner bracket 1215 and the vibration plate 1214 are allowed to move relative to the outer bracket 1216 in the axial direction of the barrel groove 12123, so as to transmit the mechanical vibration generated by the vibration component 121. Please refer to Figure 13 As shown, in another optional embodiment, the vibration plate 1214 includes an annular edge portion 12144 and one or more ribs 12145 supported within the annular edge portion 12144. The annular edge portion 12144 defines a first through hole 12141. The other end of the inner bracket 1215 facing away from the magnet group 1211 may define a through groove (not shown) corresponding to the rib. The rib may be received within the through groove, thereby limiting the relative movement of the outer bracket 1215 and the inner bracket 1216 along the radial direction of the cylindrical groove 12123, while allowing the inner bracket 1215 and the vibration plate 1214 to move relative to the outer bracket 1216 in the axial direction of the cylindrical groove 12123.

[0098] Of course, the above two optional situations can also be combined. Figure 13 As shown, the vibration plate 1214 may include an annular middle portion 12143, an annular edge portion 12144, and one or more ribs 12145 supporting and connecting the annular edge portion 12144 and the annular middle portion 12143. The annular middle portion 12143 is provided with a second through hole 12142, and the position of the second protrusion 12162 corresponds to the position of the second through hole 12142 (not limited to Figure 11 The annular edge portion 12144 defines a first through hole 12141 , and the position of the first protruding column 12151 corresponds to the position of the first through hole 12141 .

[0099] Combine Figures 2 to 6, the vibration plate 122 is connected to the vibration component 121 and is exposed through the opening 111, so as to transmit the above-mentioned mechanical vibration to the user's auditory nerve through the user's head, thereby allowing the user to hear the sound. As an example, the vibration plate 122 is arranged at the other end of the inner bracket 1216 away from the magnet group 1211, and abuts the vibration plate 1214, so that the inner bracket 1216 and the vibration plate 1214 can drive the vibration plate 122 to vibrate. Furthermore, the bone conduction speaker 12 may also include an elastic shock-absorbing plate 123. Specifically, the vibration component 121 may further include an elastic shock-absorbing plate 123. The outer edge of the elastic shock-absorbing plate 123 is fixedly connected to the speaker housing 11. Combined Figures 2 to 6 Regarding the description of the protective mesh 13, the outer edge of the elastic shock-absorbing sheet 123 can be specifically located between the speaker housing 11 and the protective mesh 13, that is, the outer edge of the elastic shock-absorbing sheet 123 can be fixed on the speaker housing 11, and the protective mesh 13 is then fixed on the elastic shock-absorbing sheet 123. For the first embodiment mentioned above, the elastic shock-absorbing sheet 123 can be clamped between the annular base 112 and the annular support portion 133. Specifically, the inner surface of the annular support portion 133 can be glued to the elastic shock-absorbing sheet 123, and the elastic shock-absorbing sheet 123 can be glued to the annular base 112. For the second embodiment mentioned above, the elastic shock-absorbing sheet 123 can be clamped between the annular base 112 and the annular support portion 133. Specifically, the outer surface of the annular support portion 133 can be glued to the elastic shock-absorbing sheet 123, and the elastic shock-absorbing sheet 123 can be glued to the annular base 112. For the third embodiment mentioned above, the elastic damping sheet 123 can be clamped between the second cover 142 and the annular support 112. Specifically, the elastic damping sheet 123 can be fixed to the second cover 142 and the annular support 112 respectively by gluing.

[0100] Furthermore, the elastic shock-absorbing plate 123 is arranged between the vibration plate 122 and the other end of the inner bracket 1216 away from the magnet group 1211, so as to slow down the vibration of the inner bracket 1216 in the axial direction of the cylindrical groove 12123, thereby increasing the stability of the vibration of the vibration plate 122.

[0101] As an example, the second boss 12162 may include an integrally connected first column segment 12163 and a second column segment 12164. The first column segment 12163 is closer to one end of the inner bracket 1216 than the second column segment 12164, and the cross-sectional area of ​​the second column segment 12164 is smaller than the cross-sectional area of ​​the first column segment 12163 in a cross section perpendicular to the axial direction of the cylindrical groove 12123. With this arrangement, the first column segment 12163 is inserted into the second through-hole 12142, and the second column segment 12164 is inserted into the vibration plate 122, so that the inner bracket 1216 drives the vibration plate 122 to vibrate. Furthermore, the elastic shock-absorbing plate 123 defines a third through-hole 1231. The elastic shock-absorbing plate 123 is sleeved onto the second column segment 12164 through the third through-hole 1231 and supported on the first column segment 12163.

[0102] like Figure 14 As shown, the ear hook assembly 20 is formed with a storage space 21 for accommodating the battery assembly 50 or the control circuit assembly 60. The ear hook assembly 20 is also formed with a connecting hole 22, which connects the storage space 21 with the outside. Furthermore, the sound pickup assembly 40 is arranged in the storage space 21 and adjacent to the connecting hole 22, so that the sound pickup assembly 40 can pick up sound through the connecting hole 22. Based on the above detailed description, the number of ear hook assemblies 20 is two, and the number of sound pickup assemblies 40 can also be two accordingly. At this time, the two sound pickup assemblies 40 correspond one-to-one to the two storage spaces 21, that is, each sound pickup assembly 40 is correspondingly arranged in one storage space 21 and adjacent to the connecting hole 22, so that both sound pickup assemblies 40 can pick up sound through the corresponding connecting hole 22.

[0103] As an example, the earhook assembly 20 may include a connecting component 23 and an earhook housing 24 connected to the connecting component 23. One end of the connecting component 23 is connected to the earhook housing 24, and the other end of the connecting component 23 is connected to the speaker assembly 10. Furthermore, each earhook housing 24 is formed with a receiving space 21 and a connecting hole 22 connecting the receiving space 21 with the outside world. Based on the above description, the speaker assembly 10 may cause the outside air to vibrate during sound production, which is known as "sound leakage." To this end, the connecting hole 22 is provided on the side of the earhook housing 24 away from the speaker assembly 10 to minimize the "sound leakage" caused by the pickup assembly 40 picking up the speaker assembly 10, thereby reducing interference from the speaker assembly 10 on the pickup assembly 40. Furthermore, the pickup assembly 40 being located on the side of the receiving space 21 away from the speaker assembly 10 can also reduce the mechanical vibrations generated by the speaker assembly 10 from being transmitted to the pickup assembly 40, thereby reducing the occurrence of "howling" or noise generated by the pickup assembly 40. Of course, in other embodiments, the connecting hole 22 may also be opened on the side of the ear hook shell 24 facing the speaker assembly 10, or on the side facing the user's head when the ear hook shell 24 is worn, or on the side away from the user's head when the ear hook shell 24 is worn.

[0104] like Figure 15 As shown, the connecting component 23 may include a first elastic coating 231, a second elastic coating 232 and an elastic wire 233, and a guide wire 234 may be passed through the connecting component 23. One end of the elastic wire 233 is connected to the ear hook shell 24 (specifically, the first ear hook shell 241), and the other end of the elastic wire 233 is used to connect to the speaker assembly 10. Figure 15 and Figure 1One end of the wire 234 is electrically connected to the battery assembly 50 or the control circuit assembly 60, etc., located within the earhook assembly 20, while the other end of the wire 234 is electrically connected to the speaker assembly 10 corresponding to the earhook assembly 20. The first elastic coating 231 and the second elastic coating 232 can be formed by two-color injection molding and wrap around the elastic wire 233 and the wire 234. In this case, the elastic wire 233 is curved and has a certain degree of rigidity / strength to form the basic form of the earhook assembly 20, thereby facilitating the user to wear the sound-generating device 1. The first elastic coating 231 and the second elastic coating 232 have a certain degree of softness and appearance quality to improve the wearing comfort and aesthetic appearance of the sound-generating device 1. Furthermore, the joint between the first elastic coating 231 and the second elastic coating 232 divides the surface of the connecting component 23 into an inner side and an outer side, which are disposed opposite each other. The exposed surface of the first elastic coating 231 serves as the inner side of the connecting component 23, while the exposed surface of the second elastic coating 232 serves as the outer side of the connecting component 23. It should be noted that when the sound-generating device 1 is in the worn state, most of the inner surface of the connecting component 23 contacts the user's ear and the head nearby, and most of the outer surface of the connecting component 23 does not contact the user's ear and the head nearby.

[0105] In the related art, when making the connecting component 23, an auxiliary metal wire is generally used. The auxiliary metal wire and the elastic metal wire 233 are arranged side by side, and both have substantially the same structural parameters such as shape, length, and curvature radius. In this case, the related art generally first uses injection molding to form an elastic coating on the surface of the auxiliary metal wire and the elastic metal wire 233, then extracts the auxiliary metal wire and inserts the wire 234 into the elastic coating (that is, the position where the auxiliary metal wire was originally located) to obtain the connecting component 23. However, during the above-mentioned injection molding process, since the auxiliary metal wire and the elastic metal wire 233 have a certain length and curvature radius, the two (especially the middle area therebetween) may deviate from their original position under the impact of the injection molding material, ultimately resulting in uneven wall thickness of the elastic coating, affecting the molding quality of the connecting component 23. In particular, when the wall thickness of the elastic coating is designed to be thin, during long-term use of the sound-generating device 1, the connecting component 23 may even experience the undesirable phenomenon of "breaking the skin", seriously affecting the user experience.

[0106] What is different from the related art is that: in the present application, not only is the elastic coating of the related art divided into two, namely the first elastic coating 231 and the second elastic coating 232, which can be injection molded twice; a through groove 235 is also formed on one side of one of the elastic coatings (for example, the first elastic coating 231). The through groove 235 is extended along the extension direction of the first elastic coating 231, and is used to place the elastic metal wire 233 and the auxiliary metal wire (which can be replaced with the wire 234 later). Furthermore, the second elastic coating 232 is injection molded on one side of the first elastic coating 231 (that is, the side where the through groove 235 is located), and covers the elastic metal wire 233 and the auxiliary metal wire, so that after the first elastic coating 231 and the second elastic coating 232 are spliced ​​and fixed, by pulling out the auxiliary metal wire, a lead channel ( Figure 15 The lead channel is used to pass the wire 234.

[0107] In short, the present application can obtain a first elastic coating 231 having a through-slot 235 by a first injection molding method, then place an elastic metal wire 233 and an auxiliary metal wire in the through-slot 235, and then form a second elastic coating 232 on the side of the through-slot 235 of the first elastic coating 231 by a second injection molding method to wrap the elastic metal wire 233 and the auxiliary metal wire, and finally extract the auxiliary metal wire to form a lead channel, and pass the wire 234 through the lead channel (that is, the position where the auxiliary metal wire was originally located) to obtain the connecting component 23. Obviously, since the through-slot 235 has a certain depth, the first elastic coating 231 can partially wrap the elastic metal wire 233 and the auxiliary metal wire to play a limiting role, thereby allowing the elastic metal wire 233 and the auxiliary metal wire to withstand the impact of the injection molding material, which is conducive to improving the technical problem of the elastic metal wire 233 and the auxiliary metal wire deviating from their original position. Preferably, the depth of the through groove 235 can be equal to the radius of the larger diameter of the elastic metal wire 233 and the auxiliary metal wire. In some embodiments, the number of through grooves 235 can be two, and the two through grooves 235 are arranged side by side and are used to place the elastic metal wire 233 and the auxiliary metal wire respectively, so that the lead channel (that is, the location where the wire 234 is located) and the elastic metal wire 233 are separated from each other, so that the elastic metal wire 233 and the auxiliary metal wire (or the wire 234 arranged subsequently) do not interfere with each other. In some other embodiments, the number of through grooves 235 is one, and the elastic metal wire 233 and the auxiliary metal wire are accommodated together in the through groove 235, so that the elastic metal wire 233 can be exposed to the lead channel, which can simplify the structure of the connecting component 23.

[0108] In this embodiment, one of the first elastic coating 231 and the second elastic coating 232 may be formed first, and then the through groove 235 may be formed on the first formed one, and then the other one may be formed on the first formed one. Figure 15 The structure shown is only an exemplary description of this embodiment and is not limited to the only way of this embodiment. Figure 15 The second elastic coating 232 is formed with a through groove 235, and then the first elastic coating 231 is formed. In other words, it is equivalent to Figure 15 The second elastic coating 232 shown in FIG serves as the first elastic coating, Figure 15 The first elastic coating 231 shown in FIG. 2 serves as the second elastic coating.

[0109] Furthermore, the earhook shell 24 is fixed to one end of the elastic metal wire 233 by injection molding. The second elastic coating 232 further covers at least part of the outer surface of the earhook shell 24, and the first elastic coating 231 is stopped between the earhook shell 24 and the speaker assembly 10. As an example, the earhook shell 24 may include a first earhook shell 241 and a second earhook shell 242, which are connected and matched to form an accommodating space 21. The first earhook shell 241 is fixedly connected to one end of the connecting component 23 (specifically, the elastic metal wire 233) by injection molding, and the second earhook shell 242 is fixedly connected to the first earhook shell 241. At this time, the second elastic coating 232 covers the outer surface of the first earhook shell 241, and the first elastic coating 231 is stopped between the second earhook shell 242 and the speaker assembly 10.

[0110] Based on the above detailed description, the molding process of the ear hook assembly 20 can be: 1) forming a speaker assembly 10 and a first ear hook shell 241 at both ends of the elastic metal wire 233 respectively; 2) obtaining a first elastic coating 231 with a through groove 235 by a first injection molding method; 3) assembling the first elastic coating 231 in step 2) with the semi-finished product and the auxiliary metal wire in step 1); 4) forming a second elastic coating 232 on the side of the through groove 235 of the first elastic coating 231 by a second injection molding method to wrap the elastic metal wire 233 and the auxiliary metal wire, and cover the outer surface of the first ear hook shell 241; 5) pulling out the auxiliary metal wire of the semi-finished product in step 4) to form a lead channel, and then passing the wire 234 into the lead channel; 6) fixing the second ear hook shell 242 to the first ear hook shell 241 in step 5) by one or a combination of gluing, clamping, threaded connection, etc.

[0111] like Figure 16As shown, a receiving groove 25 for receiving the pickup assembly 40 is further formed in the receiving space 21. As an example, the second ear hook shell 242 may include a bottom wall 2421 and a side wall 2422 connected to the bottom wall 2421. The first ear hook shell 241 covers the side wall 2422 and is arranged opposite to the bottom wall 2421 to form the receiving space 21. In this case, the connecting hole 22 can be opened in the side wall 2422. Specifically, as shown in FIG. Figure 15 As shown, the connecting hole 22 can be opened at position C on the second ear hook shell 242. Based on the above description, the connecting hole 22 is opened on the side of the side wall 2422 away from the connecting component 23 to minimize the interference of the speaker assembly 10 on the pickup assembly 40. Furthermore, the bottom wall 2421 is protruded toward the side of the first ear hook shell 241 and is provided with a flange 2423. The flange 2423 can not only enclose the receiving groove 25, but also play a role in limiting and fixing the pickup assembly 40. In some other embodiments, the connecting hole 22 can also be opened at other positions, such as Figure 15 The O position on the first ear hook shell 241 shown in FIG. Figure 15 The B, D, E positions on the second ear hook shell 242 are shown.

[0112] The inventors of this application have found in their long-term research that if the sound pickup assembly 40 is directly connected to the outside world through the connecting hole 22, the sound path between the sound pickup assembly 40 and the outside world will be shorter. When the sound-generating device 1 is in a complex environment (for example, when the air flow is relatively strong), the sound pickup assembly 40 will pick up more noise, and even cause "wind noise". For this reason, if Figure 16 and Figure 17 As shown, the present application sets a channel member 26 between the sound pickup assembly 40 and the communication hole 22 to extend the sound path of the sound pickup assembly 40 and thereby improve the sound pickup effect of the sound pickup assembly 40 .

[0113] As an example, the channel member 26 is disposed within the accommodating space 21 and is formed with a sound inlet 261, a channel 262, and a sound outlet 263. The sound inlet 261 and the sound outlet 263 are spaced apart and connected to the channel 262. Preferably, the shortest distance from the sound inlet 261 through the channel 262 to the sound outlet 263 is greater than or equal to 4 mm, so as to extend the sound path of the pickup assembly 40. Furthermore, the sound inlet 261 is connected to the connecting hole 22, and the sound outlet 263 is disposed adjacent to the pickup assembly 40, so that sound can be transmitted to the pickup assembly 40 in sequence through the connecting hole 22, the sound inlet 261, the channel 262, and the sound outlet 263. In this case, the channel member 26 can cover the flange 2423, that is, the channel member 26 covers the receiving slot 25 and is used to press the pickup assembly 40 into the receiving slot 25. The sound inlet 261 faces the side wall 2422 and is connected to the communication hole 22, and the sound outlet 263 is connected to the pickup assembly 40. In this arrangement, the channel member 26 not only extends the sound path of the pickup assembly 40 but also fixes the pickup assembly 40. In other words, the channel member 26 can be "one piece, two pieces."

[0114] Furthermore, the connecting hole 22 can be configured in a slit shape, and the sound inlet hole 261 can be configured in a corresponding slit shape to increase the contact area between the sound path of the sound pickup assembly 40 and the outside world, thereby improving the sound pickup effect of the sound pickup assembly 40. Based on the above-mentioned relevant description, if the contact area between the sound path of the sound pickup assembly 40 and the outside world is too large, on the one hand, it may cause "wind noise" phenomenon, and on the other hand, it will greatly reduce the waterproof and dustproof performance of the ear hook assembly 20. To this end, the present application sets a windproof mesh cover 27 on the sound path of the sound pickup assembly 40. As an example, the windproof mesh cover 27 abuts between the channel member 26 and the ear hook shell 24, thereby separating the connecting hole 22 and the sound inlet hole 261, and is used to improve the windproof and noise reduction of the sound pickup assembly 40, and improve the waterproof and dustproof performance of the ear hook assembly 20. Among them, the windproof mesh cover 27 can include a stacked iron mesh 271 and a gauze mesh 272, and the gauze mesh 272 is closer to the channel member 26 than the iron mesh 271. It should be noted that the structural strength of the iron mesh 271 is greater than that of the gauze mesh 272, and the mesh number of the gauze mesh 272 is greater than the structural strength of the iron mesh 271. The two cooperate to enable the windproof mesh cover 27 to take into account its own structural strength, the sound pickup requirements of the sound pickup component 40, and the waterproof and dustproof requirements of the ear hook component 20.

[0115] like Figure 17As shown, the channel member 26 may include a channel top wall 264, a channel bottom wall 265, and a channel side wall 266 that enclose a channel 262. The channel top wall 264 and the channel bottom wall 265 are disposed opposite each other, and the channel side wall 266 is connected between the channel top wall 264 and the channel bottom wall 265. Furthermore, the sound inlet 261 is provided in the channel side wall 266, and the sound outlet 263 passes through the channel bottom wall 265. In this case, the channel bottom wall 265 can also be used to press and hold the pickup assembly 40. As an example, the channel top wall 264 and the channel bottom wall 265 are disposed in parallel and spaced apart so that the channel 262 is flat to accommodate the flat structure of the ear hook housing 24. The height of the channel 262 from the channel top wall 264 to the channel bottom wall 265 may be 0.45-0.75 mm. Preferably, the height of the channel 262 from the channel top wall 264 to the channel bottom wall 265 may be 0.65 mm.

[0116] Furthermore, the sound pickup assembly 40 may include a sound pickup element 41 and a protective cover 42. The protective cover 42 is sleeved on the outer periphery of the sound pickup element 41. Furthermore, the protective cover 42 is provided with a groove 421 facing the bottom wall 265 of the channel, and the sound pickup element 41 is at least partially exposed in the groove 421. It is arranged in this way that when the channel member 26 presses the sound pickup assembly 40 into the accommodating groove 25, the protective cover 42 abuts against the flange 2423 and fits tightly with the flange 2423, and the groove 421 and the sound outlet hole 263 are connected to each other. At this time, the protective cover 42 may be a silicone cover, so that during the above-mentioned assembly process, the protective cover 42 can undergo elastic deformation to increase the fixing effect of the flange 2423 on the sound pickup assembly 40, and increase the sealing of the sound path between the sound pickup assembly 40 and the channel member 26, thereby improving the sound pickup effect of the sound pickup assembly 40. In addition, the protective cover 42 and the sound pickup element 41 can be tightly fitted, and the sound pickup part of the sound pickup element 41 (specifically, the diaphragm) can be exposed in the groove 421, so that after the sound is transmitted to the groove 421, it is not easy for the sound to leak from between the protective cover 42 and the sound pickup element 41 to the rear side of the sound pickup element 41, thereby better maintaining the sound pickup effect of the sound pickup element 41.

[0117] Based on the above detailed description, the number of ear hook components 20 can be two. In this case, the number of sound pickup components 40 corresponds to two, and the number of channel components 26 also corresponds to two. Specifically, a sound pickup component 40 and a channel component 26 are respectively provided in the accommodating space 21 of each ear hook component 20, so as to improve the sound pickup effect of each sound pickup component 40. Furthermore, the number of speaker components 10 also corresponds to two, and each ear hook component 20 is connected to a speaker component 10. With such an arrangement, when the user wears the sound-emitting device 1, the two speaker components 10 can be respectively located on both sides of the user's head to form stereo sound, thereby improving the acoustic expression of the sound-emitting device 1.

[0118] The inventors of this application have discovered through long-term research that in the related art, the two speaker assemblies 10 are mostly electrically connected to the same mainboard (such as the main circuit board 61 mentioned later), and the two speaker assemblies 10 are adjusted by a set of volume control buttons (such as the volume button 62 mentioned later). At this time, the volume of the two speaker assemblies 10 increases or decreases synchronously under the adjustment of the volume control buttons. Although such a setting can simplify the adjustment control of the speaker assembly 10 and the structure of the entire machine for users with normal hearing, it can also simplify the structure of the entire machine; however, for users with abnormal hearing, it may also cause the sound heard to always be "one loud and the other small", thereby affecting the user experience. For this reason, the present application provides a set of volume buttons 62 on each of the two ear hook assemblies 20 to adjust the corresponding speaker assemblies 10 respectively, that is, the two speaker assemblies 10 can be controlled by two sets of volume buttons 62 respectively, so that the user can adaptively adjust the two speaker assemblies 10 according to actual usage needs.

[0119] like Figure 18 As shown, the control circuit assembly 60 may include a main circuit board 61 and two sets of volume buttons 62. The battery assembly 50 is accommodated in the accommodation space 21 of one ear hook housing 24, and the main circuit board 61 is accommodated in the accommodation space 21 of the other ear hook housing 24, so as to balance the weight distribution of the sound device 1. Furthermore, two independent audio processing chips ( Figure 19 (not shown), respectively and independently control the audio gains of the two speaker assemblies 10. The audio processing chip is, for example, an audio processing DSP chip.

[0120] As an example, Figure 16 As shown, each ear hook housing 24 (specifically, the second housing 242) is formed with a volume button hole 28 that communicates with the accommodating space 21. Each set of volume buttons 62 is correspondingly disposed in a volume button hole 28 of an ear hook housing 24 and is exposed through the volume button hole 28, so that a user can control the corresponding audio processing chip on the main circuit board 61 by pressing the volume button 62, thereby adjusting the audio gain of the corresponding speaker assembly 10.

[0121] Furthermore, the control circuit assembly 60 may also include a secondary circuit board 63, which is disposed within the housing space 21 of the earhook housing 24 that houses the battery assembly 50. In other words, the secondary circuit board 63 and the battery assembly 50 are disposed within the same housing space 21 of the earhook housing 24. In this case, the secondary circuit board 63 can cover the corresponding volume button hole 28 and abut the volume button 62 to withstand user pressure applied to the volume button 62. Furthermore, the secondary circuit board 63 can be coupled to the main circuit board 61, allowing the main circuit board 61 to process presses of the volume button 62 coupled to the secondary circuit board 63.

[0122] Based on the detailed description above, for the sound-generating device 1, one end of the rear-hook assembly 30 may be provided with an earhook assembly 20 and a corresponding speaker assembly 10, a sound pickup assembly 40 and its channel member 26, a battery assembly 50, a secondary circuit board 63, and a set of volume buttons 62, while the other end may be provided with an earhook assembly 20 and a corresponding speaker assembly 10, a sound pickup assembly 40 and its channel member 26, a main circuit board 61, and a set of volume buttons 62. The electrical components disposed at both ends of the rear-hook assembly 30 may be electrically connected via wires built into the rear-hook assembly 30 to achieve transmission of control commands, electrical energy, and the like.

[0123] Furthermore, since the main circuit board 61 is generally smaller than the battery assembly 50, a function button 64 can be provided on one side of the main circuit board 61. The function button 64 can replace or coexist with the corresponding volume button 62 and can implement functions such as play / pause, AI wake-up, and power on / off, thereby expanding the interactive capabilities of the sound device 1.

[0124] As an example, Figure 19 As shown, the control circuit assembly 60 may also include function buttons 64 and a waterproof backing 65. A function switch 66 is provided on the main circuit board 61. A sliding hole 29 is defined in the earhook housing 24 (specifically, the first earhook housing 241) housing the main circuit board 61. The sliding hole 29 communicates with the accommodating space 21. The function button 64 is slidably disposed within the sliding hole 29 and is capable of toggling the function switch 66. Furthermore, the waterproof backing 65 is disposed within the accommodating space 21 of the earhook housing 24 housing the main circuit board 61 and is fixedly connected to the earhook housing 24 housing the main circuit board 61, forming a waterproof barrier between the main circuit board 61 and the corresponding earhook housing 24. The waterproof backing 65 defines a backing hole 651, which may correspond to the sliding hole 29, for example, coaxially and of equal size. The function button 64 is slidably disposed within the sliding hole 29 and the backing hole 651, facilitating actuation of the function button 64.

[0125] like Figure 20 and Figure 21 As shown, the function button 64 may include an integrally connected sliding portion 641 and a connecting portion 642. The connecting portion 642 is disposed on one side of the sliding portion 641 and extends away from the sliding portion 641. The sliding portion 641 may be located in the sliding hole 29 and configured for user sliding operation. For example, the sliding portion 641 may be exposed through the sliding hole 29 on the other side of the connecting portion 642. Furthermore, the connecting portion 642 may include two connecting plates 643 disposed opposite the sliding portion 641. Each of the two connecting plates 643 has a protruding latch 644 extending away from the sliding portion 641, allowing the connecting portion 642 to engage with the side of the waterproof lining 65 away from the sliding portion 641. In this case, one of the connecting plates 643 further defines a switch receiving area 645 on the side away from the sliding portion 641. The switch receiving area 645 is configured to accommodate the function switch 66, thereby enabling the function button 64 to toggle the function switch 66. With such a configuration, on the one hand, the function button 64 can be engaged with the function switch 66, so that the user can toggle the function switch 66 through the function button 64; on the other hand, the function button 64 can also be engaged with the ear hook shell 24 and the waterproof lining 65 to prevent the function button 66 from falling off the ear hook shell 24 and improve the waterproof and dustproof performance of the ear hook shell 24 at the function button 66.

[0126] For example, the waterproof backing 65 has a protrusion 652 protruding from one side of the sliding portion 641 and surrounding the backing hole 651. Specifically, the protrusion 652 can be arranged along the circumference of the backing hole 651. This arrangement allows the protrusion 652 to abut against one side of the sliding portion 641 when the function button 64 is engaged with the earhook housing 24 and the waterproof backing 65. The connecting portion 642 passes through the sliding hole 29 and the backing hole 651 and can move within these holes to activate the function switch 66. By rationally designing the structure of the function button 64, the waterproof backing 65, and their coordination with the earhook housing 24, the protrusion 652 can remain in contact with one side of the sliding portion 641 as the connecting portion 642 moves within the backing hole 651, thereby ensuring the waterproof and dustproof performance of the earhook housing 24 at the function button 66.

[0127] Of course, the above structure of the function button 64 is only an exemplary description. The function button 64 can also be in the form of sliding, scrolling, and touching. Regardless of the form of the function button 64, the above waterproof structure can be used, that is, the waterproofing of the function button 64 is achieved through the corresponding structure of the waterproof lining 65, which will not be repeated here.

[0128] It should be noted that the function button 64 , the waterproof lining 65 and the housing (specifically including the first ear hook housing 241 and the second ear hook housing 242 ) can cooperate to form a button waterproof assembly 100 .

[0129] See Figure 22 , Figure 22 This is a schematic diagram of the relationship between the howling threshold and position of the sound pickup component in the sound-generating device provided by this application. It should be noted that: Figure 22 The horizontal axis may represent the relative position of the sound pickup assembly on the sound generating device, and the vertical axis may represent the howling threshold value (in dB) of the sound pickup assembly.

[0130] Based on the above description, the sound pickup component 40 can be mainly used to pick up the user's voice, the ambient sound of the user's environment, etc. For the hearing-impaired, the sound pickup effect of the sound pickup component 40 will affect the clarity and stability of the sound received by the hearing-impaired through the sound-emitting device 1. Theoretically, the sound pickup component 40 can be set at any position on the sound-emitting device 1, but the inventors of this application have found in long-term research that the closer the sound pickup component 40 is to the speaker component 10, the more likely it is to be affected by the speaker component 10, and the more likely it is to cause "howling" due to the acoustic coupling between the two. Therefore, combined with Figure 1 and Figure 15 The present application has conducted multiple tests on the relationship between the howling threshold of the sound pickup assembly 40 and its relative position on the sound generating device 1. The corresponding test results are as follows: Figure 22 The larger the howling threshold, the lower the probability of the pickup assembly 40 experiencing a “howling” phenomenon, and the smaller the influence of the speaker assembly 10.

[0131] As an example, Figure 15 As shown, the pickup assembly 40 can be provided on the ear hook assembly 20; Figure 1 As shown, the pickup assembly 40 can also be arranged on the rear hanging assembly 30. Figure 14 Since the ear hook shell 24 is further away from the speaker assembly 10 than the connecting component 23, the pickup assembly 40 can correspond to the first ear hook shell 241 and the second ear hook shell 242. Figure 15 and Figure 1, the relative position O can correspond to the first ear hook shell 241, and the relative positions B, C, D, and E can correspond to the second ear hook shell 242. Specifically, when the sound-emitting device 1 is in the wearing state, the relative position O is located on the outside of the ear hook component 20 away from the user's head, the relative positions B and E are located above the ear hook component 20, and the relative position E is further away from the speaker component 10 than the phase position B, the relative position D is located below the ear hook component 20, and the relative position C is located behind the ear hook component 20 away from the speaker component 10. Further, for the rear hanging component 30, combined with Figure 1 , the relative positions F, G, H, and I are sequentially away from the speaker assembly 10. Among them, the relative position I may correspond to the middle position of the rear hanging assembly 30.

[0132] like Figure 22 As shown, the howling threshold at relative position O is used as a reference, that is, the howling threshold at relative position O is defined as 0. The howling thresholds at relative positions B, C, D, E, F, G, H, and I are all greater than 0, indicating that placing the pickup assembly 40 at these positions is beneficial for improving the aforementioned "howling" phenomenon. Furthermore, the howling thresholds at relative positions F, G, H, and I are significantly higher than those at relative positions B, C, D, and E, indicating that placing the pickup assembly 40 on the rear-hook assembly 30 is more beneficial for improving the aforementioned "howling" phenomenon. It is worth noting that for the earhook assembly 20, the howling thresholds at relative positions C and E are also significantly higher than those at relative positions B and D, indicating that the further the pickup assembly 40 is positioned on the earhook assembly 20 from the speaker assembly 10, the more beneficial it is for improving the aforementioned "howling" phenomenon. For relative position E, structural interference between the earhook assembly 20 and the rear-hook assembly 30 may occur, so placing the pickup assembly 40 at position C on the earhook assembly 20 is preferred.

[0133] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A sound-generating device, characterized in that: The sound-emitting device includes an earhook assembly, a sound pickup assembly, and a channel member, the earhook assembly is formed with an accommodating space and a communicating hole, the communicating hole communicates with the accommodating space and the outside, the sound pickup assembly and the channel member are arranged in the accommodating space, the channel member includes a channel top wall, a channel bottom wall, and a channel side wall, the channel top wall and the channel bottom wall are arranged opposite to each other, the channel side wall is connected between the channel top wall and the channel bottom wall to enclose a channel, the channel side wall is provided with a sound inlet hole communicating with the channel, the channel bottom wall is provided with a sound outlet hole communicating with the channel, the sound inlet hole is connected to the communicating hole, and the sound outlet hole is arranged adjacent to the sound pickup assembly, so that sound can be transmitted to the sound pickup assembly through the communicating hole, the sound inlet hole, the channel, and the sound outlet hole in sequence; Wherein, the ear hook assembly includes a connecting part and an ear hook shell connected to the connecting part, the ear hook shell forms the accommodating space and the communicating hole, and a accommodating groove for accommodating the sound pickup assembly is further formed in the accommodating space, and the channel member covers the accommodating groove for pressing the sound pickup assembly in the accommodating groove.

2. The sound-generating device according to claim 1, wherein: The shortest distance from the sound inlet hole to the sound outlet hole through the channel is greater than or equal to 4 mm.

3. The sound-generating device according to claim 2, characterized in that: The communicating hole is arranged in a slit shape, and the sound inlet hole is correspondingly arranged in a slit shape.

4. The sound-generating device according to claim 1, wherein: The channel top wall and the channel bottom wall are arranged in parallel and spaced apart, and the height of the channel in the direction from the channel top wall to the channel bottom wall is 0.45-0.75 mm.

5. The sound-generating device according to claim 1, characterized in that: The earhook shell includes a first earhook shell and a second earhook shell, the first earhook shell is fixedly connected to the connecting component, the second earhook shell includes a bottom wall and a side wall ring-connected to the bottom wall, the first earhook shell covers the side wall and is arranged opposite to the bottom wall to connect with the second earhook shell to form the accommodating space, the bottom wall protrudes on one side toward the first earhook shell and is provided with a flange that surrounds the accommodating groove, the communicating hole is opened on the side wall, the channel member covers the flange to press the pickup assembly into the accommodating groove, and the sound inlet hole faces the side wall and is connected to the communicating hole.

6. The sound-generating device according to claim 5, characterized in that: The communicating hole is opened on a side of the side wall away from the connecting component.

7. The sound-generating device according to claim 5, characterized in that: The sound pickup assembly includes a sound pickup element and a protective cover. The protective cover is arranged on the outer periphery of the sound pickup element. The protective cover is provided with a groove facing the bottom wall of the channel. The sound pickup element is at least partially exposed in the groove. The protective cover abuts against the flange and fits tightly with the flange. The groove and the sound outlet are connected to each other.

8. The sound-generating device according to claim 4, characterized in that: The sound-generating device includes a windproof mesh cover, which is abutted between the channel member and the ear hook shell, thereby separating the communicating hole and the sound inlet hole for windproof and noise reduction.

9. The sound-generating device according to claim 8, characterized in that: The windproof mesh cover includes an iron mesh and a gauze mesh that are stacked, and the gauze mesh is closer to the channel member than the iron mesh.

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