Loudspeaker assembly and earphone

Abstract

The loudspeaker assembly comprises at least one of a battery and a control circuit board, the loudspeaker assembly further comprises a bone conduction loudspeaker, the bone conduction loudspeaker comprises a machine core shell, a first vibration transmission piece, a vibration plate, an energy conversion device and a cover body, the energy conversion device comprises a support, the first vibration transmission piece is connected with the support and the machine core shell, and the first vibration transmission piece is connected with the support and the cover body. The vibration plate is connected with the support, the support is provided with a first weight reduction cavity which is located in the machine core shell and provided with an opening end, and the cover body is used for sealing the opening end of the first weight reduction cavity. Through the above mode, the working stability and reliability of the loudspeaker assembly can be improved.

Description

[0001] This application is a divisional application of Chinese invention patent application No. 202480013674.7, filed on February 5, 2024, entitled "Headphones". Technical Field

[0002] This application relates to the field of electronic device technology, and in particular to speaker assemblies and headphones. Background Technology

[0003] With the increasing popularity of electronic devices, they have become indispensable social and entertainment tools in people's daily lives, and people's demands for electronic devices are also getting higher and higher. Electronic devices such as headphones and smart glasses are also widely used in people's daily lives. They can be used in conjunction with terminal devices such as mobile phones and computers to provide users with an auditory feast.

[0004] However, the speaker components in existing headphones are not stable. Summary of the Invention

[0005] This application provides a loudspeaker assembly including at least one of a battery and a control circuit board. The loudspeaker assembly also includes a bone conduction loudspeaker, which includes a core housing, a first transducer, a vibrating plate, a transducer, and a cover. The transducer includes a bracket, the first transducer is connected to the bracket and the core housing to suspend the transducer inside the core housing, the vibrating plate is connected to the bracket, the bracket is provided with a first weight-reducing cavity located inside the core housing and having an open end, and the cover is used to seal the open end of the first weight-reducing cavity.

[0006] By suspending the transducer within the housing, allowing it to move relative to the housing, the transducer vibrates within the housing. This enables the speaker assembly to convert sound into mechanical vibrations of different frequencies, which are then transmitted directly to the user's cheekbone via the wearing component, resulting in excellent sound transmission. The inclusion of a first weight-reducing cavity effectively lowers the weight of the support, thereby improving the vibration performance of the transducer, enhancing the stability and reliability of the speaker assembly, and ultimately improving the headphone's sound quality.

[0007] In some embodiments, the movement housing includes a bottom wall and a peripheral side wall connected to the bottom wall to form an accommodating space with an opening at one end, the transducer being disposed within the accommodating space, and the opening end of the first weight reduction cavity being disposed facing the bottom wall.

[0008] In some embodiments, the cover is configured to seal the first weight-reducing cavity on one side of the open end of the first weight-reducing cavity.

[0009] In some embodiments, a second weight-reducing cavity is provided on the side of the cover facing the first weight-reducing cavity, and the first weight-reducing cavity and the second weight-reducing cavity are in communication with each other.

[0010] In some implementations, the cover and the support are detachably connected.

[0011] In some embodiments, the bracket is provided with a connector hole located around the first weight reduction cavity, and the cover includes a cover plate body and a connector post provided on one side of the cover plate body. The connector post is connected to the connector hole, and the cover plate body seals the opening end of the first weight reduction cavity.

[0012] In some embodiments, the transducer further includes a coil wound around the periphery of the support. The support is provided with a support lead hole, which connects the first weight reduction cavity and the periphery of the support. The lead end of the coil is further introduced into the first weight reduction cavity through the support lead hole.

[0013] In some implementations, the bone conduction loudspeaker also includes leads configured to connect to the leads of the coil within a first weight-reducing cavity.

[0014] In some embodiments, the transducer further includes a magnetic shield, which is cylindrical and has a connecting hole that connects the inner and outer walls of the magnetic shield radially. The coil is wound on the outer wall. The bracket is formed on the magnetic shield and includes a bracket body and a connecting part. The bracket body is at least partially disposed inside the inner wall, the connecting part is disposed in the connecting hole, and the bracket lead hole is disposed on the connecting part.

[0015] In some embodiments, the bone conduction loudspeaker also includes a vibration transmission face-fitting assembly. The core housing includes a bottom wall and a peripheral side wall connected to the bottom wall to form an accommodating space with one end open. The transducer is placed in the accommodating space through the open end of the core housing. The transducer includes a bracket. A first vibration transmission plate connects the bracket and the core housing to elastically suspend the transducer in the core housing. The vibration transmission face-fitting assembly is assembled and fixed on the bracket along the spacing direction between the bracket and the bottom wall. The bottom wall is provided with a through hole disposed opposite to the bracket.

[0016] In some embodiments, when viewed along the vibration direction of the transducer, the bone conduction loudspeaker has a long axis direction and a short axis direction, and the size of the bone conduction loudspeaker along the long axis direction is larger than the size along the short axis direction. The number of through holes is two, and the two through holes are spaced apart along the long axis direction.

[0017] In some embodiments, in a reference plane perpendicular to the vibration direction of the transducer, the through hole forms a first projection area along the vibration direction in the reference plane, and the bracket forms a second projection area along the vibration direction in the reference plane. The area ratio of the overlapping portion of the first projection area and the second projection area to the area of ​​the second projection area is greater than or equal to 0.3.

[0018] In some embodiments, the first transducer includes an inner ring fixing portion, an outer ring fixing portion, and at least two elastic connecting portions. The outer ring fixing portion is disposed around the periphery of the inner ring fixing portion, and the at least two elastic connecting portions are connected between the inner ring fixing portion and the outer ring fixing portion.

[0019] In some implementations, the inner ring fixing part is connected to the bracket, the outer ring fixing part is connected to the movement housing, and the radial dimension of the vibration transmission contact assembly is larger than the radial dimension of the outer ring fixing part.

[0020] In some embodiments, the vibration transmission face-fitting assembly includes a vibrating plate, a soft vibration transmission element, and a rigid support. The central region of the soft vibration transmission element is molded and fixed to the vibrating plate, and the edge region of the soft vibration transmission element is molded and fixed to the rigid support. The vibrating plate and the support are interlocked along the interval direction. The rigid support is connected to the core housing, and the radial dimension of the rigid support is larger than the radial dimension of the outer ring fixing part.

[0021] This application provides an earphone, which includes a speaker assembly as described above and a wearing component connected to the speaker assembly. The wearing component is used to position the speaker assembly on the face area in front of the user's tragus when worn. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of an embodiment of the earphone in this application;

[0023] Figure 2 Is it like this? Figure 1 The diagram shows the disassembly structure of the headphones.

[0024] Figure 3 Is it like this? Figure 1 The diagram shows a usage scenario for the headphones.

[0025] Figure 4 Is it like this? Figure 2 The diagram shows the disassembled structure of the bone conduction speaker.

[0026] Figure 5 Is it like this? Figure 2 The bone conduction loudspeaker shown is a top view of the first transducer.

[0027] Figure 6 Is it like this? Figure 2 The bone conduction loudspeaker shown is a top view schematic diagram without the first transmission plate.

[0028] Figure 7 Is it like this? Figure 1 A schematic cross-sectional view of section ZZ shown;

[0029] Figure 8 Is it like this? Figure 4 A three-dimensional structural diagram of the movement housing shown;

[0030] Figure 9 Is it like this? Figure 4 A bottom view of part of the transducer shown.

[0031] Figure 10 Is it like this? Figure 2 Another disassembled structural diagram of the bone conduction speaker is shown;

[0032] Figure 11 Is it like this? Figure 10 A partial disassembly diagram of the transducer shown.

[0033] Figure 12 Is it like this? Figure 10 A bottom view of part of the transducer shown.

[0034] Figure 13 Is it like this? Figure 2 The bone conduction loudspeaker shown is a top view schematic diagram without a vibrating plate.

[0035] Figure 14 Is it like this? Figure 10 A schematic diagram of the three-dimensional structure of the vibrating plate shown;

[0036] Figure 15 Is it like this? Figure 2 Another disassembled structural diagram of the bone conduction speaker is shown;

[0037] Figure 16 Is it like this? Figure 2 The diagram shown is a bottom view of the bone conduction speaker.

[0038] Figure 17 This is a schematic diagram of the overall structure of the transducer embodiment provided in this application;

[0039] Figure 18 yes Figure 17 An exploded view of some components of the transducer embodiment shown.

[0040] Figure 19 yes Figure 17 The cross-sectional structure of the transducer embodiment shown is schematically illustrated along the aa cutting direction.

[0041] Figure 20 yes Figure 17 A top-view schematic diagram of an embodiment of the transducer device shown;

[0042] Figure 21 yes Figure 20 A schematic diagram comparing the perimeter of the outer edge of the outer ring fixing part and the total width of the notch at the outer edge of the outer ring fixing part in the embodiment of the transducer device shown;

[0043] Figure 22 yes Figure 17A cross-sectional view of the transducer embodiment shown from another perspective along the aa cutting direction.

[0044] Figure 23 yes Figure 19 The diagram shows an enlarged view of the transducer embodiment in region I.

[0045] Figure 24 yes Figure 2 A schematic diagram of the overall structure of some components of the bone conduction speaker in the illustrated headphone embodiment;

[0046] Figure 25 yes Figure 24 A schematic diagram of the cross-sectional structure along the bb cutting direction in the bone conduction speaker embodiment shown;

[0047] Figure 26 yes Figure 24 A schematic diagram of the structure of the first transducer in the bone conduction loudspeaker embodiment shown;

[0048] Figure 27 yes Figure 24 An exploded view of some components of the bone conduction speaker embodiment shown;

[0049] Figure 28 yes Figure 17 A schematic diagram of the structure of the second transducer in the embodiment of the transducer device shown;

[0050] Figure 29 yes Figure 17 Another structural schematic diagram of the second transducer in the embodiment of the transducer device shown. Detailed Implementation

[0051] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0052] like Figure 1 As shown, the headphones 1 may include a wearing component 2, a speaker component 3, and a microphone component 7. There may be two speaker components 3. The two speaker components 3 are used to transmit vibrations and / or sound to the user's left and right ears, respectively. The two speaker components 3 may be the same or different. For example, one speaker component 3 may have a microphone component 7, while the other speaker component 3 may not have a microphone component 7.

[0053] like Figure 2As shown, the wearing component 2 may include a headband component 21, a telescopic component 22, and a torsion component 23. There may be two telescopic components 22 and two torsion components 23. The two ends of the headband component 21 are connected to the two telescopic components 22, and the two telescopic components 22 are connected to the two torsion components 23. The two torsion components 23 are connected to the two speaker components 3. The headband component 21 is used to wrap around the user's head, and its shape can match the user's head contour, making it more comfortable and stable for the user to wear. The headband component 21 is also used to elastically clamp the sides of the user's head. The telescopic component 22 can extend and retract to change its length, thereby changing the distance between the headband component 21 and the speaker components 3, thus adaptively adjusting according to different head shapes to position the speaker components 3 in a suitable position, thereby improving the compatibility of the wearing component 2. The twisting component 23 can generate elastic twisting, which can be generated when the speaker component 3 comes into contact with the user's head during the wearing state, so that the speaker component 3 can fit the user's face more closely or be positioned at the ear.

[0054] like Figure 2 The headband assembly 21 may include a clamping assembly 210 and a first elastic covering 212. The clamping assembly 210 may include an elastic sheet to achieve an elastic clamping function. The first elastic covering 212 may include a covering body 2121 and an elastic band 2122 integrally formed with the covering body 2121. The covering body 2121 is formed to cover the periphery of the clamping assembly 210 and the wire. The two ends of the elastic band 2122 are spaced apart from each other along the length direction of the clamping assembly 210 and are respectively connected to the covering body 2121. Between the connection points between the two ends of the elastic band 2122 and the covering body 2121, the elastic band 2122 is separated from the covering body 2121. The elastic band 2122 is used to assist in positioning the clamping assembly 210 on the user's head when worn.

[0055] like Figure 2 As shown, the telescopic component 22 may include a fixing part 221 and a telescopic part 223 that is telescopically disposed relative to the fixing part 221. The two ends of the clamping component 210 are respectively fixed to the corresponding fixing parts 221, for example, by plug-in fixing. The telescopic component 22 may include a decorative part 224. The fixing part 221 is provided with a groove 2203. The telescopic part 223 is slidably disposed in the groove 2203. The decorative part 224 is assembled and fixed to the fixing part 221 (for example, covering each other) to cover the groove 2203 and the portion of the telescopic part 223 located in the groove 2203.

[0056] like Figure 2As shown, the torsion assembly 23 may include an elastic connector 231, a second elastic cover 232, and a first insertion portion 233 and a second insertion portion 234 disposed at both ends of the elastic connector 231. The elastic connector 231... Figure 2 The upper part is roughly indicated by a dotted line. The second elastic cover 232 is molded to cover the periphery of the elastic connector 231, and the wire can be passed through the second elastic cover 232. The first connector 233 is connected to the connector hole 310 of the speaker assembly 3, and the second connector 234 is connected to the connector hole (not marked) of the telescopic part 223.

[0057] like Figure 2 As shown, the speaker assembly 3 may include a housing assembly 30, a bone conduction speaker 40, and an air conduction speaker 50. The speaker assembly 3 may also include at least one of a battery 61 and a control circuit board 62. The housing assembly 30 is used to house the bone conduction speaker 40 and the air conduction speaker 50, the bone conduction speaker 40 being fitted to the user's face, and the air conduction speaker 50 being used to transmit air conduction sound waves into the user's ear canal. When the headphones 1 are worn on the user's head, the wearing assembly 2 can position the speaker assembly 3 in the facial area in front of the user's tragus.

[0058] like Figure 2 As shown, the housing assembly 30 may include a main housing 31 and a main cover 32. The main housing 31 may have an open end, and the main cover 32 covers the open end of the main housing 31. The main cover 32 may be provided with a sound outlet (not labeled) for the air conduction speaker 50 to emit sound. A portion of the bone conduction speaker 40 may be exposed through the open end of the main housing 31 for conforming to the user's face. The vibration directions of the bone conduction speaker 40 and the air conduction speaker 50 may be perpendicular to each other, and they are assembled on the main housing 31 in such a perpendicular manner to reduce mutual interference between the bone conduction speaker 40 and the air conduction speaker 50. For face-fitting comfort, the bone conduction speaker 40 may be provided with an auxiliary face-fitting component 44. The auxiliary face-fitting component 44 is used to increase the contact area between the bone conduction speaker 40 and the user's face when worn, thereby improving wearing comfort. The auxiliary face-fitting component 44 may include a rigid support 441 and a soft fitting component 442. The rigid support 441 is used to support the soft fitting component 442, thereby improving the structural strength and stability of the auxiliary face-fitting component 44. The soft fitting component 442 is used to fit the user's face towards the user's face, and with the support of the rigid support 441, it can fit the user's face more stably and closely.

[0059] like Figure 2As shown, the speaker assembly 3 may include at least one of a control circuit board 62 and a battery 61. For example, one speaker assembly 3 may include a control circuit board 62, while another speaker assembly 3 may not include a control circuit board 62 but may include a battery 61. A connecting wire between the two speaker assemblies 3 may pass across the wearing assembly 2. For example, one speaker assembly 3 may include both a control circuit board 62 and a battery 61. Alternatively, there may be two control circuit boards 62, with each speaker assembly 3 including one control circuit board 62. There may also be two batteries 61, with each speaker assembly 3 including one battery 61.

[0060] The stick microphone assembly 7 is rotatably mounted on the speaker assembly 3. The stick microphone assembly 7 may include a stick body assembly 70, a microphone assembly 80, and a pivot mechanism 91. The microphone assembly 80 and the pivot mechanism 91 can be connected to both ends of the stick body assembly 70, and the pivot mechanism 91 is rotatably connected to the speaker assembly 3. When worn, the pivot mechanism 91 can rotate relative to the speaker assembly 3 to position the microphone assembly 80 in the sound pickup area of ​​the user's mouth. The microphone assembly 80 is provided with at least one microphone and a related button, which can turn the microphone on or off.

[0061] In medicine, anatomy, and other fields, the human body can be defined by three basic planes: the sagittal plane, the coronal plane, and the horizontal plane; and three basic axes: the sagittal axis (SA), the coronal axis (CA), and the vertical axis (VA). The sagittal plane is a section perpendicular to the ground along the anteroposterior direction of the body, dividing the body into left and right parts. The coronal plane is a section perpendicular to the ground along the left-right direction of the body, dividing the body into anterior and posterior parts. The horizontal plane is a section parallel to the ground along the vertical direction of the body, dividing the body into superior and inferior parts. Correspondingly, the sagittal axis (SA) is the axis along the anteroposterior direction of the body and perpendicular to the coronal plane; the coronal axis is the axis along the left-right direction of the body and perpendicular to the sagittal plane; and the vertical axis (VA) is the axis along the vertical direction of the body and perpendicular to the horizontal plane. Figure 3 As shown, when the earphone 1 is worn, the wearing component 2 is clamped on both sides of the user's head, and the speaker component 3 is located in the facial area in front of the tragus along the sagittal axis SA.

[0062] The following content will describe in detail the headphone 1 or some of the components and structures mentioned above. Of course, some of the structures and components mentioned above, such as the bone conduction speaker 40 and the air conduction speaker 50, can be used not only in the headphone 1, but also in other electronic devices, such as mobile phones, speakers, and smart wearable devices.

[0063] Optionally, such as Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the speaker assembly 3 may include a bone conduction speaker 40, which includes a core housing 41, a first transducer 45, a transducer 42, a vibrating plate 431, and a lead wire 46.

[0064] The first transducer plate 45 includes an inner ring fixing part 451, an outer ring fixing part 452, and at least two elastic connecting parts 453. The outer ring fixing part 452 is arranged around the periphery of the inner ring fixing part 451. At least two elastic connecting parts 453 are connected between the inner ring fixing part 451 and the outer ring fixing part 452. The inner ring fixing part 451 is connected to the transducer 42, and the outer ring fixing part 452 is connected to the core housing 41, thereby suspending the transducer 42 inside the core housing 41. The vibrating plate 431 is connected to the transducer 42.

[0065] The lead wire 46 is connected to the transducer 42 and includes a first lead wire portion 461 extending from the inner ring fixing portion 451 to the outer ring fixing portion 452. When viewed along the vibration direction z1 of the vibrating plate 431, the first transducer plate 45 has a major axis direction LD1 and a minor axis direction SD1 that are perpendicular to each other. The size ld1 of the first transducer plate 45 along the major axis direction LD1 is greater than the size sd1 along the minor axis direction SD1. The angle between the first lead wire portion 461 and the major axis direction LD1 is smaller than the angle between the first lead wire portion 461 and the minor axis direction SD1.

[0066] By configuring the first transducer 45 to include an inner ring fixing part 451, an outer ring fixing part 452, and at least two elastic connecting parts 453, the inner ring fixing part 451 and the outer ring fixing part 452 are respectively connected to the transducer 42 and the core housing 41, thereby suspending the transducer 42 inside the core housing 41. That is, the transducer 42 can move relative to the core housing 41, so that the transducer 42 can vibrate inside the core housing 41. This allows the speaker assembly 3 to convert sound into mechanical vibrations of different frequencies, and when worn on the user's head by the wearing assembly 2, it contacts the user's cheekbone to directly transmit sound, thereby achieving a good sound transmission effect and effectively improving the sound quality of the headphones 1. The number of elastic connecting parts 453 can be, for example, 2, 4, 6, 8, etc., or other numbers. It is worth noting that the first lead part 461 is disposed between adjacent elastic connecting parts 453.

[0067] The lead wire 46 is connected to the transducer 42 and is used to transmit electrical signals to the transducer 42. By setting the angle between the first lead wire portion 461 and the major axis direction LD1 to be smaller than the angle between it and the minor axis direction SD1, the length of the first lead wire portion 461 is increased. This effectively reduces the ratio of the stretching length caused by the transducer 42 stretching the first lead wire portion 461 during vibration to the total length of the first lead wire portion 461. This effectively reduces the possibility of the transducer 42 overstretching the first lead wire portion 461 during vibration, effectively improving the structural stability and reliability of the speaker assembly 3, and effectively extending the service life of the speaker assembly 3.

[0068] Optionally, such as Figure 5 As shown, the first lead portion 461 is disposed along the major axis direction LD1, that is, the angle between the first lead portion 461 and the major axis direction LD1 is 0°, and the angle between it and the minor axis direction SD1 is 90°. Distributing the first lead portion 461 along the major axis direction LD1 facilitates positioning and further increases the length of the first lead portion 461, thereby effectively reducing the possibility of excessive stretching of the first lead portion 461 by the transducer 42 during vibration, effectively improving the structural stability and reliability of the speaker assembly 3, and effectively extending the service life of the speaker assembly 3. In some embodiments, the angle between the first lead portion 461 and the major axis direction LD1 can be 10°, and the angle between it and the minor axis direction SD1 can be 80°. In some embodiments, the angle between the first lead portion 461 and the major axis direction LD1 can be 20°, and the angle between it and the minor axis direction SD1 can be 70°. In some embodiments, the angle between the first lead portion 461 and the major axis direction LD1 can be 30°, and the angle between it and the minor axis direction SD1 can be 60°.

[0069] Optionally, such as Figure 5 and Figure 6 As shown, the movement housing 41 is provided with rotating shaft mechanisms 41x that are spaced apart from each other along the short axis direction SD1. The rotating shaft mechanism 41x is used to define a rotation axis Ax1 so that the movement housing 41 rotates about the rotation axis Ax1. The lead wire 46 includes a second lead wire portion 462, which is connected to the first lead wire portion 461 near the end of the outer ring fixing portion 452 and extends towards the rotating shaft mechanism 41x along the circumference of the movement housing 41.

[0070] By setting a rotating shaft mechanism 41x to enable the core housing 41 to rotate around the rotation axis Ax1, and setting the second lead part 462 to be connected to the end of the first lead part 461 near the outer ring fixing part 452, and extending towards the rotating shaft mechanism 41x along the circumference of the core housing 41, the stretching / shaking degree of the second lead part 462 during the rotation of the core housing 41 is effectively reduced, thereby reducing the possibility of overstretching the second lead part 462, effectively improving the structural stability and reliability of the speaker assembly 3, and effectively improving the service life of the speaker assembly 3.

[0071] Optionally, such as Figure 6 As shown, a lead wire groove 4105 is provided on the housing 41 along the circumference of the housing 41, and the second lead wire portion 462 is embedded in the lead wire groove 4105. By providing the lead wire groove 4105 to accommodate the second lead wire portion 462, the second lead wire portion 462 is not only conveniently positioned and installed, but also effectively protected and fixed, and the possibility of interference between the second lead wire portion 462 and other components is reduced, effectively improving the reliability of the speaker assembly 3.

[0072] Optionally, such as Figure 4 and Figure 6 As shown, the outer ring fixing part 452 is provided with a first hollow area 454, and the movement housing 41 is provided with a first insert 414. The first insert 414 is further embedded in the first hollow area 454, and the lead wire groove 4105 extends further to the first insert 414. The first vibration plate 45 can be a metal part, and the first insert 414 can be a plastic part. The first vibration plate 45 can be made of a demagnetizing metal material, such as demagnetizing stainless steel or demagnetizing aluminum alloy.

[0073] The connection between the first transducer 45 and the housing 41 is achieved by setting the first hollow area 454 and the first insert 414 in cooperation. The structure is simple, easy to assemble, and effectively improves assembly efficiency. The first transducer 45 is, for example, a metal part, and the first insert 414 is, for example, a plastic part. That is, the hardness of the first insert 414 is lower than that of the first transducer 45. The first insert 414 can be embedded in the first hollow area 454 by undergoing a certain elastic deformation, thus achieving an interference fit between the two to improve connection stability. The lead wire groove 4105 extends further onto the first insert 414 to position and install the lead wire 46, effectively protecting the lead wire 46 and reducing the possibility of damage to the lead wire 46 by the outer ring fixing part 452 during the vibration of the transducer 42. This is beneficial to improving the stability and reliability of the speaker assembly 3.

[0074] Optionally, such as Figure 6 and Figure 7As shown, the housing 41 of the mechanism is provided with a housing lead hole 4104. The extension direction of the housing lead hole 4104 intersects the rotation axis Ax1. The second lead part 462 further passes through the housing lead hole 4104 and is used to connect the control circuit board 62.

[0075] By providing a housing lead hole 4104 to achieve electrical connection between the second lead portion 462 and the control circuit board 62, it is easier for the control circuit board 62 to output electrical signals and transmit them to the transducer 42, which helps to improve the stability and reliability of the speaker assembly 3. Furthermore, the extension direction of the housing lead hole 4104 intersects the rotation axis Ax1, which effectively reduces the stretching of the second lead portion 462 during the rotation of the mechanism housing 41, further enhancing the stability and reliability of the speaker assembly 3.

[0076] Optionally, such as Figure 2 , Figure 4 and Figure 8 As shown, the speaker assembly 3 further includes a main housing 31, and the core housing 41 includes a bottom wall 411 and a peripheral side wall 412 connected to the bottom wall 411 to form an accommodating space 410 with one end open. The transducer 42 is disposed in the accommodating space 410. The housing lead hole 4104 is disposed on the bottom wall 411. The rotating shaft mechanism 41x is disposed on the peripheral side wall 412. The rotating shaft mechanism 41x rotatably supports the core housing 41 on the main housing 31. The control circuit board 62 is disposed on the main housing 31 and is located on the side of the bottom wall 411 of the core housing 41 away from the transducer 42.

[0077] By placing the transducer 42 within the accommodating space 410, placing the housing lead hole 4104 on the bottom wall 411, and placing the control circuit board 62 on the side of the bottom wall 411 of the core housing 41 away from the transducer 42, the second lead 462 can pass through the housing lead hole 4104 to connect to the control circuit board 62, while reducing the length required for the second lead 462 to extend through the housing lead hole 4104. This effectively improves the layout rationality and space utilization of the speaker assembly 3, and is conducive to improving the structural integration of the speaker assembly 3.

[0078] Optionally, such as Figure 7 As shown, along the vibration direction z1 of the vibrating plate 431, the distance between the rotating shaft mechanism 41x and the bottom wall 411 is less than the distance between the rotating shaft mechanism 41x and the opening end 413 of the core housing 41. That is, the rotating shaft mechanism 41x is closer to the bottom wall 411 than the opening end 413, so as to provide a larger accommodating space 410 for the control circuit board 62 and reduce the possibility of other components interfering with the control circuit board 62, which is beneficial to improving the stability and reliability of the speaker assembly 3.

[0079] Optionally, such as Figure 4 andFigure 9 As shown, the transducer 42 includes a bracket 421 and a coil 422 disposed on the bracket 421. The bracket 421 is provided with a weight reduction cavity 420. The bracket 421 is connected to the inner ring fixing part 451. The bracket 421 is provided with a first bracket lead hole 4201, which connects the weight reduction cavity 420 and the side of the bracket 421 near the inner ring fixing part 451. The lead wire 46 includes a third lead wire part 463, which is connected to the end of the first lead wire part 461 near the inner ring fixing part 451, and extends along the first bracket lead wire hole 4201 to the weight reduction cavity 420, and is electrically connected to the coil 422.

[0080] By setting the weight reduction cavity 420, the weight of the bracket 421 can be effectively reduced, which is beneficial to improving the vibration effect of the transducer 42. Furthermore, the third lead part 463 is connected to the end of the first lead part 461 near the inner ring fixing part 451, and extends along the first bracket lead hole 4201 to the weight reduction cavity 420 to be electrically connected to the coil 422. This reduces the possibility of the third lead part 463 interfering with the peripheral components during vibration, which is beneficial to improving the stability and reliability of the speaker assembly 3.

[0081] Optionally, such as Figure 4 and Figure 6 As shown, the inner ring fixing part 451 is provided with a second hollow area 455, and the bracket 421 is provided with a second insert 4217. At least a portion of the second insert 4217 is further embedded in the second hollow area 455. The first bracket lead hole 4201 is provided on the second insert 4217. The first vibration transducer 45 can be a metal part, and the second insert 4217 can be a plastic part. Optionally, the second insert 4217 includes a connector 4204, which is further embedded in the second hollow area 455.

[0082] By setting a second hollow area 455 and a second insert 4217 to connect the inner ring fixing part 451 and the bracket 421, the structure is simple, easy to assemble, and effectively improves assembly efficiency. Furthermore, the first transducer 45 can be a metal part, while the second insert 4217 can be a plastic part, meaning the hardness of the second insert 4217 is lower than that of the first transducer 45. The second insert 4217 can, for example, be embedded in the second hollow area 455 through a certain elastic deformation, thus achieving an interference fit between the two to improve connection stability. The first bracket lead hole 4201 is located in the second insert 4217, effectively protecting the lead wire 46 and reducing the possibility of damage to the lead wire 46 by the inner ring fixing part 451 during the vibration of the transducer 42, which is beneficial to improving the stability and reliability of the speaker assembly 3.

[0083] Optionally, such as Figure 9As shown, coil 422 is wound around the periphery of bracket 421. Bracket 421 is provided with a second bracket lead hole 4202, which connects the weight reduction cavity 420 and the periphery of bracket 421. The lead end 4221 of coil 422 is further introduced into weight reduction cavity 420 through the second bracket lead hole 4202 and connected to the third lead part 463.

[0084] By setting the second bracket lead hole 4202, the lead end 4221 of the coil 422 is introduced into the weight reduction cavity 420 through the second bracket lead hole 4202, thereby reducing the possibility of the coil 422 interfering with the peripheral components during vibration, which is beneficial to improving the stability and reliability of the speaker assembly 3.

[0085] Optionally, such as Figure 2 , Figure 10 and Figure 11 As shown, in some embodiments, the speaker assembly 3 may include a bone conduction speaker 40. The bone conduction speaker 40 includes a transducer 42 and a vibrating plate 431. The transducer 42 includes a magnetic shield 423, a coil 422, and a bracket 421. The magnetic shield 423 is cylindrical and has a connecting hole 4230 that connects the inner and outer walls of the magnetic shield 423 radially. The bracket 421 is formed on the magnetic shield 423 and includes a bracket body 4211, a limiting part 4212, and a connecting part 4213. The bracket body 4211 is at least partially disposed inside the inner wall, the limiting part 4212 is disposed on the outer wall, and the connecting part 4213 integrally connects the bracket body 4211 and the limiting part 4212 through the connecting hole 4230. The limiting part 4212 is used to limit the coil 422 disposed on the outer wall. The bracket body 4211 is connected to the vibrating plate 431.

[0086] By molding the bracket 421 onto the magnetic cover 423, the assembly process of the bracket 421 and the magnetic cover 423 is simplified and the assembly effect is improved. Furthermore, by providing a connecting part 4213 that cooperates with the connecting hole 4230, the connection stability and reliability between the bracket 421 and the magnetic cover 423 are effectively improved. The limiting part 4212 is used to limit the coil 422, reducing the possibility of coil 422 misalignment, which is beneficial to improving the vibration effect of the transducer 42, thereby improving the working stability and reliability of the speaker assembly 3. The molding method can be, for example, injection molding, compression molding, or thermoforming, or other methods.

[0087] Optionally, such as Figure 10 and Figure 11As shown, the limiting part 4212 is configured to abut against the coil 422 along the axial direction of the magnetic shield 423, thereby limiting the coil 422, making it easier for the coil 422 to be fitted or wound on the magnetic shield 423, effectively reducing the assembly difficulty of the coil 422 and improving the assembly efficiency.

[0088] In some embodiments, the limiting part 4212 is arranged in a ring around the circumference of the magnetic shield 423 to limit the coil 422 provided on the outer wall of the magnetic shield 423, thereby effectively improving the limiting effect.

[0089] In some embodiments, the limiting part 4212 is configured to abut against the coil 422 on one side along the axial direction of the magnetic shield 423. This configuration allows the wound coil 422 to be smoothly fitted onto the periphery of the magnetic shield 423 and then abut against the limiting part 4212. The other side is fixed by adhesive. While limiting the coil 422, this configuration effectively simplifies the process and reduces assembly difficulty, which is beneficial to improving assembly efficiency.

[0090] Optionally, such as Figure 10 and Figure 11 As shown, the limiting part 4212 includes a first sub-limiting part 4214 and a second sub-limiting part 4215 spaced apart along the axial direction of the magnetic cover 423, and the coil 422 is wound between the first sub-limiting part 4214 and the second sub-limiting part 4215.

[0091] By setting the first sub-limiting part 4214 and the second sub-limiting part 4215 at intervals, the coil 422 is wound between the first sub-limiting part 4214 and the second sub-limiting part 4215, thereby blocking and limiting both sides of the coil 422 in the axial direction of the magnetic shield 423, and both sides of the coil 422 can be abutted, effectively improving the limiting effect.

[0092] Optionally, the material density of the bracket 421 is less than that of the magnetic cover 423, which helps to reduce the weight of the bracket 421, thereby improving the vibration effect of the transducer 42 and improving the sound quality of the speaker assembly 3.

[0093] Optionally, such as Figure 12 As shown, the main body 4211 of the support is provided with a weight reduction cavity 420, and the connecting part 4213 is provided with a support lead hole 4202. The lead end 4221 of the coil 422 extends further into the weight reduction cavity 420 through the support lead hole 4202.

[0094] By setting up the weight reduction cavity 420, the weight of the bracket 421 can be effectively reduced, which is beneficial to improving the vibration effect of the transducer 42 and making the speaker assembly 3 lighter. The lead end 4221 of the coil 422 extends into the weight reduction cavity 420 through the lead hole 4202 of the bracket. On the one hand, the lead end 4221 of the coil 422 extends into the weight reduction cavity 420, which facilitates the connection of the lead end 4221 of the coil 422 to the lead wire 46, improving the convenience of assembly. On the other hand, it helps to reduce the possibility of interference between the lead end 4221 of the coil 422 and the external components during vibration, which is beneficial to improving the stability and reliability of the speaker assembly 3.

[0095] Optionally, such as Figure 10 and Figure 13 As shown, the bone conduction loudspeaker 40 also includes a core housing 41, a first transducer 45, and a lead wire 46. The first transducer 45 includes an inner ring fixing part 451, an outer ring fixing part 452, and at least two elastic connecting parts 453. The outer ring fixing part 452 is arranged around the periphery of the inner ring fixing part 451. At least two elastic connecting parts 453 are connected between the inner ring fixing part 451 and the outer ring fixing part 452. The inner ring fixing part 451 is connected to the support body 4211, and the outer ring fixing part 452 is connected to the core housing 41. The lead wire 46 is arranged to be connected to the lead-out end 4221 of the coil 422 in the weight reduction cavity 420.

[0096] By configuring the first transducer 45 to include an inner ring fixing part 451, an outer ring fixing part 452, and at least two elastic connecting parts 453, the inner ring fixing part 451 and the outer ring fixing part 452 are respectively connected to the transducer 42 and the core housing 41, thereby suspending the transducer 42 inside the core housing 41. This allows the transducer 42 to move relative to the core housing 41, enabling it to vibrate inside the core housing 41. This allows the speaker assembly 3 to convert sound into mechanical vibrations of different frequencies, and the wearing component 2 allows direct sound transmission through contact with the user's cheekbone, achieving excellent sound transmission and effectively improving the sound quality of the headphones 1. Furthermore, by configuring the lead wire 46 to connect to the lead-out end 4221 of the coil 422 within the weight reduction cavity 420, the possibility of interference between the lead-out end 4221 of the coil 422 and external components during vibration is effectively reduced, which helps improve the stability and reliability of the speaker assembly 3.

[0097] Optionally, such as Figure 12 As shown, lead wire 46 and lead-out end 4221 are two corresponding sets. The bracket body 4211 is provided with a spacing mechanism 4216 located in the weight reduction cavity 420. The spacing mechanism 4216 is used to keep the connection positions of the two sets of lead wires 46 and lead-out end 4221 at a predetermined interval, effectively reducing the possibility of short circuit and improving the stability and reliability of the speaker assembly 3.

[0098] Optionally, such as Figure 10 , Figure 11 and Figure 14 As shown, the bracket body 4211 has a first insertion hole 4203 and a plurality of first insertion posts 4204 on the side facing the inner ring fixing part 451. The plurality of first insertion posts 4204 are arranged around and spaced apart from the outer periphery of the first insertion hole 4203. The inner ring fixing part 451 has an exposed hole 4501 and a plurality of assembly holes 4502. The plurality of assembly holes 4502 are arranged around and spaced apart from the outer periphery of the exposed hole 4501. The first insertion hole 4203 is exposed through the exposed hole 4501. The first insertion posts 4204 are inserted into the corresponding assembly holes 4502. The vibrating plate 431 has a second insertion post 4310 and a plurality of second insertion holes 4311. The plurality of second insertion holes 4311 are arranged around and spaced apart from the outer periphery of the second insertion post 4310. The second insertion post 4310 is engaged with the first insertion hole 4203, and the first insertion post 4204 is engaged with the second insertion hole 4311.

[0099] By setting the second connector 4310 to engage with the first connector 4203 and the first connector 4204 to engage with the second connector 4311, and by setting an exposed hole 4501 to expose the first connector 4203, and setting an assembly hole 4502 so that the first connector 4204 can be inserted into the second connector 4311 through the assembly hole 4502, the connection between the bracket 421, the first vibration transducer 45 and the vibration plate 431 is realized. This effectively simplifies the structure, reduces the assembly difficulty, and helps to improve the fixing effect between the bracket 421, the first vibration transducer 45 and the vibration plate 431, thereby effectively improving the connection stability.

[0100] Optionally, such as Figure 11 and Figure 14 As shown, the support body 4211 is also provided with a third connector 4205 located in the first connector hole 4203, and the vibration plate 431 is provided with a third connector hole 4312 located on the second connector 4310. The third connector 4205 and the third connector hole 4312 are connected and engaged.

[0101] By setting a third plug-in post 4205 and a third plug-in hole 4312 for plug-in mating, the bracket 421 and the vibration plate 431 are further connected and fixed, effectively improving the connection stability and reliability.

[0102] Optionally, such as Figure 2 , Figure 10 and Figure 15As shown, in some embodiments, the speaker assembly 3 may include a bone conduction speaker 40. The bone conduction speaker 40 includes a core housing 41, a first transducer 45, a vibrating plate 431, a transducer 42, and a cover 425. The transducer 42 includes a bracket 421. The first transducer 45 connects the bracket 421 and the core housing 41 to suspend the transducer 42 inside the core housing 41. The vibrating plate 431 is connected to the bracket 421. The bracket 421 is provided with a first weight-reducing cavity 420 located inside the core housing 41 and having an open end 4200. The cover 425 is used to cover the open end 4200 of the first weight-reducing cavity 420.

[0103] By suspending the transducer 42 within the housing 41, allowing it to move relative to the housing 41, the transducer 42 can vibrate within the housing 41. This enables the speaker assembly 3 to convert electrical signals into mechanical vibrations of different frequencies, which are then transmitted directly to the user's cheekbone via the wearing component 2, resulting in excellent sound transmission. The first weight-reducing cavity 420 effectively reduces the weight of the support 421, thereby improving the vibration effect of the transducer 42, making the overall headphone 1 lighter, enhancing the stability and reliability of the speaker assembly 3, and improving the sound quality of the headphone 1.

[0104] Furthermore, since the transducer 42 generates sound waves by vibrating within the housing 41, if the first weight-reducing cavity 420 is not covered, it will connect with the acoustic cavity within the housing 41 that provides sound wave vibration, increasing the volume of the acoustic cavity and thus increasing sound leakage. Therefore, by covering the opening 4200 of the first weight-reducing cavity 420 with a cover 425, the volume of the acoustic cavity that provides sound wave vibration is reduced, causing the frequency of the leaking sound waves to shift to higher frequencies that are difficult for the human ear to hear, thereby reducing sound leakage in the human voice frequency band and effectively improving the sound transmission effect and sound quality of the speaker assembly 3.

[0105] Optionally, such as Figure 10 and Figure 15 As shown, the mechanism housing 41 includes a bottom wall 411 and a peripheral side wall 412 connected to the bottom wall 411 to form an accommodating space 410 with one end open. The transducer 42 is disposed in the accommodating space 410, and the opening end 4200 of the first weight reduction cavity 420 is disposed facing the bottom wall 411.

[0106] By setting the opening end 4200 of the first weight-reducing cavity 420 toward the bottom wall 411, the cover 425 can cover the opening end 4200 of the first weight-reducing cavity 420 without hindering the transmission of sound waves to the user, thereby effectively improving the sound transmission effect and sound quality of the speaker assembly 3.

[0107] Optionally, such as Figure 10and Figure 15 As shown, the cover 425 is configured to seal the first weight reduction cavity 420 on one side of the opening end 4200 of the first weight reduction cavity 420, effectively isolating the first weight reduction cavity 420 from the accommodating space 410, thereby reducing the volume of the acoustic cavity for sound wave vibration, reducing sound leakage in the human voice frequency band, and effectively improving the sound transmission effect and sound quality of the speaker assembly 3.

[0108] Optionally, such as Figure 10 As shown, a second weight-reducing cavity 4250 is provided on the side of the cover 425 facing the first weight-reducing cavity 420, and the first weight-reducing cavity 420 and the second weight-reducing cavity 4250 are connected to each other. By providing the second weight-reducing cavity 4250 on the cover 425, and the second weight-reducing cavity 4250 being connected to the first weight-reducing cavity 420 rather than the accommodating space 410, the weight of the transducer 42 is further reduced to improve the vibration effect, while effectively improving the sound transmission effect and sound quality of the speaker assembly 3.

[0109] Optionally, the cover 425 and the bracket 421 are detachably connected. Optionally, as... Figure 9 and Figure 14 As shown, the bracket 421 is provided with a connector hole 4206 located around the first weight reduction cavity 420. The cover 425 includes a cover plate body 4251 and a connector post 4252 provided on one side of the cover plate body 4251. The connector post 4252 is connected to the connector hole 4206. The cover plate body 4251 covers the opening end 4200 of the first weight reduction cavity 420.

[0110] By setting the connector post 4252 to match the connector hole 4206 to achieve a detachable connection between the cover 425 and the bracket 421, the structure is simple, easy to assemble and disassemble, effectively reducing assembly difficulty and improving assembly efficiency.

[0111] Optionally, such as Figure 11 and Figure 12 As shown, the transducer 42 also includes a coil 422, which is wound around the periphery of the bracket 421. The bracket 421 is provided with a bracket lead hole 4202, which connects the first weight reduction cavity 420 and the periphery of the bracket 421. The lead end 4221 of the coil 422 is further introduced into the first weight reduction cavity 420 through the bracket lead hole 4202.

[0112] By extending the lead end 4221 of the coil 422 into the first weight reduction cavity 420 through the lead hole 4202 of the bracket, on the one hand, the lead end 4221 of the coil 422 extends into the first weight reduction cavity 420, which facilitates the connection of the lead end 4221 of the coil 422 to the lead wire 46 and improves the convenience of assembly; on the other hand, it helps to reduce the possibility of interference between the lead end 4221 of the coil 422 and the peripheral components during vibration, which helps to improve the stability and reliability of the speaker assembly 3.

[0113] Optionally, such as Figure 12 As shown, the bone conduction speaker 40 also includes a lead wire 46, which is configured to be connected to the lead-out end 4221 of the coil 422 within the first weight reduction cavity 420.

[0114] The lead wire 46 and the lead-out end 4221 of the coil 422 are connected to each other in the first weight reduction cavity 420 and the first weight reduction cavity 420 is sealed by the cover 425. While transmitting electrical signals to the coil 422 through the lead wire 46, it helps to reduce the possibility of interference between the connection part of the lead-out end 4221 of the coil 422 and the lead wire 46 and the peripheral components during vibration, which helps to improve the stability and reliability of the speaker assembly 3.

[0115] Optionally, such as Figure 11 As shown, the transducer 42 also includes a magnetic shield 423, which is cylindrical and has a connecting hole 4230 that connects the inner and outer walls of the magnetic shield 423 radially. The coil 422 is wound on the outer wall. The bracket 421 is formed on the magnetic shield 423 and includes a bracket body 4211 and a connecting part 4213. The bracket body 4211 is at least partially disposed inside the inner wall, the connecting part 4213 is disposed in the connecting hole 4230, and the bracket lead hole 4202 is disposed on the connecting part 4213.

[0116] By molding the bracket 421 onto the magnetic shield 423, the assembly process of the bracket 421 and the magnetic shield 423 is simplified and the assembly effect is improved. Furthermore, by providing a connecting part 4213 that mates with the connecting hole 4230, the connection stability and reliability between the bracket 421 and the magnetic shield 423 are effectively enhanced. The molding method can be, for example, injection molding, compression molding, or thermoforming, or other methods.

[0117] Optionally, such as Figure 2 , Figure 10 and Figure 15As shown, in some embodiments, the speaker assembly 3 includes a bone conduction speaker 40. The bone conduction speaker 40 includes a core housing 41, a vibration transmission face-contact assembly 43, a first vibration transmission plate 45, and a transducer 42. The core housing 41 includes a bottom wall 411 and a peripheral sidewall 412 connected to the bottom wall 411 to form an accommodating space 410 with an opening at one end. The transducer 42 is placed in the accommodating space 410 through the opening end 413 of the core housing 41. The transducer 42 includes a bracket 421, a first... The vibration transducer 45 connects the bracket 421 and the core housing 41 to elastically suspend the transducer 42 inside the core housing 41. The vibration transducer faceplate assembly 43 is assembled and fixed on the bracket 421 along the interval direction between the bracket 421 and the bottom wall 411. The bottom wall 411 is provided with a through hole 4110 opposite to the bracket 421. The through hole 4110 is configured to allow the support fixture to be inserted into the accommodating space 410 and support the bracket 421 when the vibration transducer faceplate assembly 43 is assembled and fixed on the bracket 421.

[0118] By setting the first vibration transducer 45 to connect the bracket 421 and the core housing 41, the transducer 42 is elastically suspended inside the core housing 41. This allows for relative positional changes between the transducer 42 and the core housing 41. The transducer 42 vibrates within the accommodating space 410, reducing vibration transmission to the core housing 41 and minimizing sound leakage caused by its vibration. Furthermore, the vibration-transmitting face-contact assembly 43 is assembled and fixed to the bracket 421 along the spacing between the bracket 421 and the bottom wall 411. This enables the speaker assembly 3 to convert electrical signals into mechanical vibrations of different frequencies. The vibration-transmitting face-contact assembly 43 then directly transmits sound by contacting the user's cheekbone, achieving good sound transmission while increasing structural stability and reliability, effectively improving the sound quality of the headphones 1. Optionally, the vibration-transmitting face-contact assembly 43 and the bracket 421 can be connected by a plug-in joint, adhesive joint, or screw joint; other joint methods are also possible.

[0119] Furthermore, since the first vibration transducer 45 is suspended, it is easy for the first vibration transducer 45 to undergo elastic deformation and misalignment during the assembly of other components. For example, when installing the vibration transducer faceplate assembly 43, since the vibration transducer faceplate assembly 43 is fixed on the bracket 421, a certain pressing force will be applied to the bracket 421 during installation, causing the first vibration transducer 45 to undergo elastic deformation. Therefore, a through hole 4110 is provided on the bottom wall 411 opposite to the bracket 421. When the vibration transducer faceplate assembly 43 is assembled and fixed on the bracket 421, the support fixture is inserted into the accommodating space 410 through the through hole 4110 to provide support force for the bracket 421, thereby effectively reducing the possibility of deformation of the first vibration transducer 45, effectively improving the accuracy of positioning and installation, effectively reducing the assembly difficulty, and effectively improving the assembly efficiency and assembly yield.

[0120] Optionally, such asFigure 16 As shown, when viewed along the vibration direction z1 of the transducer 42, the bone conduction loudspeaker 40 has a long axis direction LD0 and a short axis direction SD0, and the size ld0 of the bone conduction loudspeaker 40 along the long axis direction LD0 is greater than the size sd0 along the short axis direction SD0. There are two through holes 4110, and the two through holes 4110 are spaced apart along the long axis direction LD0.

[0121] When viewed along the vibration direction z1 of the transducer 42, the bone conduction speaker 40 can be elliptical, olive-shaped, or any other shape. The major axis direction LD0 is the direction of the longest line segment obtainable through the center point and connecting two points on the outer edge of the bone conduction speaker 40 on a cross-section perpendicular to the vibration direction z1. The minor axis direction SD0 is the direction of the shortest line segment obtainable through the center point and connecting two points on the outer edge of the bone conduction speaker 40 on the same cross-section. By arranging the two through holes 4110 at intervals along the major axis direction LD0, compared to arranging them in other directions, a larger installation space can be provided for the subsequent insertion of the support fixture. This allows for more stable support of the bracket 421, ensuring better balance and stability during assembly of the bracket 421 and the first transducer plate 45, effectively improving the stability and reliability of the bone conduction speaker 40 assembly process.

[0122] Optionally, such as Figure 16 As shown, in a reference plane perpendicular to the vibration direction z1 of the transducer 42, the through hole 4110 forms a first projection area S1 along the vibration direction z1 in the reference plane, and the bracket 421 forms a second projection area S2 along the vibration direction z1 in the reference plane. The area ratio of the overlapping part S12 of the first projection area S1 and the second projection area S2 to the area of ​​the second projection area S2 is greater than or equal to 0.3, for example, 0.35, 0.5 or 0.65.

[0123] If the area ratio is too small, the support fixture may not provide stable support for the bracket 421, resulting in reduced assembly efficiency and accuracy. Conversely, if the area ratio is too large, it may interfere with other components or weaken the structural strength during the use of the support fixture. By rationally setting the area ratio of the overlapping portion S12 of the first projection area S1 and the second projection area S2 to the area ratio of the second projection area S2, the support effect of the support fixture on the bracket 421 can be effectively improved. This effectively reduces the possibility of deformation of the first transducer 45, improves the accuracy of positioning and installation, reduces assembly difficulty, and increases assembly efficiency and yield. Furthermore, by rationally setting the through hole 4110, the sound inside the housing 41 can be vented to at least partially cancel out the sound leakage caused by the vibration of the housing 41, thereby reducing sound leakage and effectively improving the sound transmission effect and sound quality of the speaker assembly 3.

[0124] Optionally, such asFigure 15 and Figure 16 As shown, the bottom wall 411 is also provided with a mounting hole 4111 adjacent to the inner wall surface of the peripheral side wall 412, and the mounting hole 4111 is spaced apart from the through hole 4110. The mounting hole 4111 communicates with the accommodating space 410. The mounting hole 4111 is configured to allow a support fixture to be inserted into the accommodating space 410 and support the bracket 421 when the vibration transmission bonding assembly 43 is assembled and fixed on the bracket 421. By providing the mounting hole 4111, the support for the bracket 421 can be further improved, the accuracy of positioning and installation can be effectively improved, the assembly difficulty can be effectively reduced, and the assembly efficiency and assembly yield can be effectively improved.

[0125] Optionally, such as Figure 16 As shown, the overlap S12 of the first projection area S1 formed by the through hole 4110 along the vibration direction z1 in the reference plane and the second projection area S2 formed by the bracket 421 along the vibration direction z1 in the reference plane accounts for more than or equal to 30% of the area of ​​the first projection area S1. The overlap area of ​​the first projection area S1 and the third projection area S42 formed by the transducer 42 along the vibration direction z1 in the reference plane accounts for more than or equal to 70% of the area of ​​the first projection area S1. The overlap area of ​​the projection areas formed by the mounting hole 4111 and the through hole 4110 along the vibration direction z1 in the reference plane and the third projection area S42 accounts for more than or equal to 80% of the area of ​​the projection areas of the through hole 4110 and the mounting hole 4111. By reasonably setting the above area ratios, the support effect of the support fixture on the bracket 421 is effectively improved, thereby effectively reducing the possibility of deformation of the first vibration transducer 45, effectively improving the accuracy of positioning and installation, effectively reducing the assembly difficulty, and effectively improving the assembly efficiency and assembly yield.

[0126] Optionally, such as Figure 11 As shown, the transducer 42 also includes a magnetic shield 423, which is cylindrical and has a connecting hole 4230 that connects the inner and outer walls of the magnetic shield 423 radially. The support 421 is formed on the magnetic shield 423 and includes a support body 421 and a connecting part 4213. The support body 421 is at least partially disposed inside the inner wall, the connecting part 4213 is disposed in the connecting hole 4230, and the through hole 4110 is disposed opposite to the support body 421.

[0127] By molding the bracket 421 onto the magnetic cover 423, the assembly process of the bracket 421 and the magnetic cover 423 is simplified, effectively improving the assembly effect. Furthermore, by providing a connecting part 4213 that cooperates with the connecting hole 4230, the connection stability and reliability between the bracket 421 and the magnetic cover 423 are effectively improved. The vibration transmission mating assembly 43 is connected to the main body of the bracket 421 to achieve assembly and fixation. By setting the through hole 4110 opposite to the main body of the bracket 421, it is easier to provide support force to the support body after the support fixture is inserted. This support force is opposite to the pressing force applied to the support body when installing the vibration transmission mating assembly 43, thereby effectively reducing the possibility of deformation of the first vibration transmission plate 45, effectively improving the accuracy of positioning and installation, effectively reducing assembly difficulty, and effectively improving assembly efficiency and assembly yield. The molding method can be, for example, injection molding, compression molding, or thermoplastic molding, or other methods.

[0128] Optionally, such as Figure 10 and Figure 15 As shown, the first vibration transducer 45 includes an inner ring fixing part 451, an outer ring fixing part 452, and at least two elastic connecting parts 453. The outer ring fixing part 452 is arranged around the periphery of the inner ring fixing part 451. At least two elastic connecting parts 453 are connected between the inner ring fixing part 451 and the outer ring fixing part 452. The inner ring fixing part 451 is connected to the bracket 421, and the outer ring fixing part 452 is connected to the core housing 41. The radial dimension of the vibration transmission contact assembly 43 is larger than the radial dimension of the outer ring fixing part 452.

[0129] By setting an inner ring fixing part 451, an outer ring fixing part 452, and at least two elastic connecting parts 453, an elastic connection between the bracket 421 and the core housing 41 is achieved. Furthermore, by setting the radial dimension of the vibration transmission face-fitting assembly 43 to be larger than the radial dimension of the outer ring fixing part 452, the first vibration transmission plate 45 is prevented from being exposed to the outside. This helps to improve the integrity of the bone conduction speaker 40 structure, facilitates the improvement of the comfort of the earphone 1 in contact with the user's cheekbone during use, effectively reduces the possibility of external debris entering the bone conduction speaker 40, and extends the service life of the earphone 1.

[0130] Optionally, such as Figure 10 and Figure 15 As shown, the vibration transmission face-fitting assembly 43 includes a vibration plate 431, a soft vibration transmission element 432, and a rigid support 433. The central region of the soft vibration transmission element 432 is molded and fixed to the vibration plate 431, and the edge region of the soft vibration transmission element 432 is molded and fixed to the rigid support 433. The vibration plate 431 and the support 421 are inserted and fitted along the interval direction. The rigid support 433 is connected to the core housing 41. The radial dimension of the rigid support 433 is larger than the radial dimension of the outer ring fixing part 452.

[0131] By molding and fixing the central region of the soft vibration transmission element 432 to the diaphragm plate 431, and molding the edge region of the soft vibration transmission element 432 to the rigid bracket 433, the fit between the soft vibration transmission element 432 and the diaphragm plate 431 and the rigid bracket 433 is effectively improved, thus enhancing connection reliability and stability, reducing assembly difficulty, and simplifying the assembly process. Molding methods can include injection molding, compression molding, and thermoforming, or other methods. Furthermore, by interlocking the diaphragm plate 431 and the bracket 421 along a spacing direction, and connecting the rigid bracket 433 to the core housing 41, the bracket 421 facilitates the transmission of vibration from the diaphragm plate 431 to the diaphragm plate 431 and further to the user, without affecting the suspension and installation of the transducer 42. This achieves good sound transmission while increasing structural stability and reliability, effectively improving the sound quality of the headphones 1.

[0132] Optionally, such as Figure 10 and Figure 15 As shown, the inner ring fixing part 451 is configured to be inserted and fitted with the bracket 421 and clamped between the bracket 421 and the vibration plate 431. The structure is simple, which makes it easy to reduce the assembly difficulty and simplify the assembly process, thereby improving the assembly efficiency and the assembly yield.

[0133] Optionally, such as Figure 10 and Figure 15 As shown, the bracket 421 has a first insertion hole 4203 and a plurality of first insertion posts 4204 on the side facing the inner ring fixing part 451. The plurality of first insertion posts 4204 are arranged around and spaced apart from the outer periphery of the first insertion hole 4203. The inner ring fixing part 451 has an exposed hole 4501 and a plurality of assembly holes 4502. The plurality of assembly holes 4502 are arranged around and spaced apart from the outer periphery of the exposed hole 4501. The first insertion hole 4203 is exposed through the exposed hole 4501. The first insertion posts 4204 are inserted into the corresponding assembly holes 4502. The vibrating plate 431 has a second insertion post 4310 and a plurality of second insertion holes 4311. The plurality of second insertion holes 4311 are arranged around and spaced apart from the outer periphery of the second insertion post 4310. The second insertion post 4310 is engaged with the first insertion hole 4203, and the first insertion post 4204 is engaged with the second insertion hole 4311.

[0134] By setting the second connector 4310 to engage with the first connector 4203 and the first connector 4204 to engage with the second connector 4311, and by setting an exposed hole 4501 to expose the first connector 4203, and setting an assembly hole 4502 so that the first connector 4204 can be inserted into the second connector 4311 through the assembly hole 4502, the connection between the bracket 421, the first vibration transducer 45 and the vibration plate 431 is realized. This effectively simplifies the structure, reduces the assembly difficulty, and helps to improve the fixing effect between the bracket 421, the first vibration transducer 45 and the vibration plate 431, thereby effectively improving the connection stability.

[0135] Optionally, such as Figure 10 and Figure 15 As shown, the main body of the bracket 421 is also provided with a third plug 4205 located in the first plug hole 4203, and the vibrating plate 431 is provided with a third plug hole 4312 located on the second plug 4310. The third plug 4205 and the third plug hole 4312 are connected and engaged.

[0136] By setting a third plug-in post 4205 and a third plug-in hole 4312 for plug-in mating, the bracket 421 and the vibration plate 431 are further connected and fixed, effectively improving the connection stability and reliability.

[0137] like Figure 3 As shown, in some embodiments, the earphone 1 may include a speaker assembly 3 and a wearing component 2 connected to the speaker assembly 3. The wearing component 2 can be used to position the speaker assembly 3 on the facial area in front of the user's tragus when worn. The front of the tragus refers to the side of the tragus facing the nose. The speaker assembly 3 can be placed on the facial area in front of the user's tragus and fit against the user's facial area. The speaker assembly 3 is used to convert electrical signals containing relevant audio information into sound wave signals and vibration signals.

[0138] In some implementations, such as Figure 2 As shown, the speaker assembly 3 may include a bone conduction speaker 40. The bone conduction speaker 40 is used to convert electrical signals containing audio information into vibration signals. The bone conduction speaker 40 can be fitted to the facial area in front of the user's tragus, so that the bone conduction speaker 40 can transmit vibration signals containing audio information to the user.

[0139] Furthermore, such as Figure 4 As shown, the bone conduction loudspeaker 40 may include a transducer 42. The transducer 42 is the main device in the bone conduction loudspeaker 40 that converts electrical signals into vibration signals.

[0140] like Figure 17As shown, the transducer 42 may include a clip 427 and a magnetic circuit system 426. The magnetic circuit system 426 may include at least two annular magnets 4261, which may be stacked on top of each other along the axial direction Ax2 of the magnetic circuit system 426, and adjacent annular magnets 4261 may be arranged with opposite polarities along the axial direction Ax2. The clip 427 may be configured to clamp two oppositely spaced outer end faces of the magnetic circuit system 426 along the axial direction Ax2. The axial direction Ax2 of the transducer 42 is as follows: Figure 17 As shown by the arrow Ax2 in the middle.

[0141] Specifically, after the transducer 42 is powered on, the magnetic circuit system 426 can vibrate along the axial direction Ax2 of the transducer 42 under the action of the electric field and the magnetic field of at least two annular magnets 4261, thereby driving the vibration transmission and contact assembly 43 to vibrate.

[0142] Adjacent annular magnets 4261 are arranged with opposing polarities along the axial direction Ax2, which allows the entire magnetic circuit system 426 to obtain a larger magnetic field and enhances the magnetic field effect of the magnetic gap. However, due to their magnetic repulsion, adjacent annular magnets 4261 are prone to mutual repulsion and displacement. Furthermore, when the magnetic circuit system 426 vibrates, at least two annular magnets 4261 also undergo axial movement Ax2 during vibration. Therefore, at least two annular magnets 4261 may easily shift during movement or when stationary, which could easily cause the internal components of the transducer 42 to loosen.

[0143] Optionally, such as Figure 17 As shown, the clip 427 can be configured to clamp at least two annular magnets 4261 on two opposite sides along the axial direction Ax2. Therefore, the clip 427 can fix at least two annular magnets 4261 on two opposite sides to reduce the displacement of at least two annular magnets 4261 along the axial direction Ax2 due to polarity repulsion, vibration, etc.

[0144] Therefore, clamps 427 are provided on the two opposite outer end faces of the magnetic circuit system 426 to hold it in place, which can limit the relative displacement between at least two annular magnets 4261, so that the transducer 42 is less likely to become loose and cause its conversion function to fail. This can improve the structural stability, tightness and reliability of the transducer 42, and also increase the service life of the transducer 42.

[0145] In some implementations, such as Figure 17 and Figure 18As shown, the magnetic circuit system 426 may further include at least three annular magnetic guide plates 4264, which are stacked on top of each other along the axial direction Ax2 of the magnetic circuit system 426 and at least two annular magnets 4261. The number of annular magnetic guide plates 4264 may correspond to the number of annular magnets 4261. The annular magnetic guide plates 4264 and annular magnets 4261 are stacked, and the annular magnetic guide plates 4264 can separate the annular magnets 4261, with each annular magnet 4261 sandwiched between two adjacent annular magnetic guide plates 4264.

[0146] For example, there can be three annular magnetic guide plates 4264 and two annular magnets 4261. Two annular magnetic guide plates 4264 are arranged along the axial direction Ax2 on both sides of the two annular magnets 4261, and the third annular magnetic guide plate 4264 is arranged in the middle of the two annular magnets 4261. With the above arrangement, the annular magnetic guide plates 4264 can better fix at least two annular magnets 4261, and can also concentrate the magnetic induction lines of the magnets on the magnetic gap between the annular magnets 4261, thereby improving the effect of the magnetic field of the magnetic gap and improving the sensitivity of the magnetic circuit system 426.

[0147] In some implementations, such as Figure 18 and Figure 19 As shown, the card holder 427 may include a first abutting part 4271, a second abutting part 4272, and a connecting part 4273. The first abutting part 4271 may abut against one side of the outer end face of the magnetic circuit system 426, the second abutting part 4272 may abut against the other side of the outer end face of the magnetic circuit system 426, and the connecting part 4273 may be connected between the first abutting part 4271 and the second abutting part 4272.

[0148] The first abutting part 4271 and the second abutting part 4272 are arranged along the axial direction Ax2 of the transducer 42 and respectively abut against the two end faces of the magnetic circuit system 426, so as to fix the transducer 42 and the magnetic circuit system 426 to each other along the axial direction Ax2, thereby limiting the relative displacement between at least two annular magnets 4261.

[0149] Optionally, the first abutting part 4271 or the second abutting part 4272 may abut against the end face of the annular magnetic guide plate 4264 along the axial direction Ax2 of the transducer 42, so as to fix at least two annular magnets 4261 through the annular magnetic guide plate 4264.

[0150] The connecting part 4273 can be connected between the first abutting part 4271 and the second abutting part 4272 to further enhance the restrictive function of the clip 427.

[0151] With this configuration, the clip 427 has a simple structure and is easy to manufacture. Using the clip 427 can also simplify the structure of the transducer 42. Moreover, the transducer 42 can achieve the function of at least two annular magnets 4261 in the stable magnetic circuit system 426 by using the simple clip 427.

[0152] For example, in some implementations, such as Figure 18 and Figure 19 As shown, the first abutting part 4271, the second abutting part 4272, and the connecting part 4273 are formed by bending sheet metal and arranged in a U-shape. Using sheet metal bending facilitates the layering of the clip 427 and simplifies the manufacturing process of the transducer 42. Furthermore, the U-shape of the clip 427 further simplifies its structure and makes it easier to bend. For example, the clip 427 can be formed by stamping.

[0153] In some embodiments, the clip 427 may be a non-magnetic material. In the transducer 42, the magnetic field on the magnetic circuit system 426 and the electric field of the internal components can work together to cause the transducer 42 to vibrate. Therefore, setting the clip 427 as a non-magnetic material can reduce the interference of the clip 427 on the magnetic field, making the position of the transducer 42 more stable and not eccentric, thereby making the transducer 42 work more stably and ensuring the vibration effect of the transducer 42.

[0154] In some implementations, such as Figure 18 to Figure 19 As shown, the number of clips 427 can be at least two, and the at least two clips 427 are arranged circumferentially spaced along the magnetic circuit system 426. In some embodiments, the at least two clips 427 are evenly spaced along the magnetic circuit system 426, thereby limiting relative displacement between the at least two annular magnets 4261 while ensuring that the center of gravity of the transducer 42 is located on the vibration axis, thus ensuring the stability of the vibration of the transducer 42. For example, as shown, the number of clips 427 can be two, and the two clips 427 can be arranged opposite each other and radially along the transducer 42 to clamp the magnetic circuit system 426 on both sides of the transducer 42, while ensuring that the center of gravity of the transducer 42 is located on the vibration axis.

[0155] Increasing the number of clips 427 can strengthen the fixing effect on at least two annular magnets 4261, and can also make the magnetic circuit system 426 more evenly stressed, thereby improving the structural stability and robustness of the transducer 42.

[0156] In some implementations, such as Figure 17 and Figure 19As shown, the transducer 42 may also include a bracket 421, a coil 422, and a transducer 424. The transducer 424 can connect the magnetic circuit system 426 and the bracket 421 to elastically suspend the magnetic circuit system 426 on the periphery of the bracket 421. The coil 422 can be disposed on the bracket 421 and located inside the magnetic circuit system 426. The connecting part 4273 is disposed on the outside of the magnetic circuit system 426.

[0157] The support 421 can be disposed inside at least two annular magnets 4261. The coil 422 can be wound and fixed to the support 421 radially. The coil 422 corresponds to at least two annular magnets 4261, so that when the coil 422 is energized, its electric field can interact with the magnetic field of the annular magnets 4261.

[0158] Specifically, the current passing through coil 422 can be controlled so that an electrical signal containing relevant audio information passes through coil 422. Since coil 422 is opposite to at least two annular magnets 4261 in the radial direction of transducer 42, the electric field of coil 422 and the magnetic field of at least two annular magnets 4261 can interact, thereby causing the magnetic circuit system 426 and the support 421 on which coil 422 is located to move relative to each other.

[0159] In this embodiment, the connecting portion 4273 is disposed on the outside of the magnetic circuit system 426; in other words, the clip 427 is disposed on the outer surface of the magnetic circuit system 426 facing away from the support 421. This arrangement reduces the space occupied by the support 421 between the magnetic circuit system 426 and the coil 422, resulting in a more compact structure and strengthening the interaction between the magnetic field of the magnetic circuit system 426 and the electric field of the coil 422. Moreover, this placement of the clip 427 facilitates its assembly onto the magnetic circuit system 426, reducing the difficulty of fabricating the transducer 42.

[0160] Optionally, there can be two transducer plates 424, which can be arranged sequentially along the axial direction Ax2 of the transducer device 42. The two transducer plates 424 are disposed on both sides of the support 421 and the magnetic circuit system 426 along the axial direction Ax2, connecting the support 421 and the magnetic circuit system 426 on both sides of the axial direction Ax2. When the magnetic circuit system 426 moves relative to each other along the axial direction Ax2 due to the interaction of the coils 422 on the support 421, the transducer plates 424 can drive the support 421 to move along the axial direction Ax2. Furthermore, using two transducer plates 424 to drive the support 421 to move or return it along the axial direction Ax2 strengthens the elastic fixing effect between the support 421 and the magnetic circuit system 426, making the structure of the transducer device 42 more stable.

[0161] In some implementations, such as Figure 19 as well asFigure 20 As shown, the vibration transducer 424 may include an inner ring fixing part 4241, an outer ring fixing part 4242, and at least two elastic connecting parts 4243.

[0162] The outer ring fixing part 4242 can be arranged around the periphery of the inner ring fixing part 4241. At least two elastic connecting parts 4243 are connected between the inner ring fixing part 4241 and the outer ring fixing part 4242. The inner ring fixing part 4241 is connected to the bracket 421, and the outer ring fixing part 4242 is connected to the outer end face of the magnetic circuit system 426. When the magnetic circuit system 426 vibrates relative to the bracket 421, the magnetic circuit system 426 can drive the outer ring fixing part 4242 to vibrate. The outer ring fixing part 4242 is connected to the inner ring fixing part 4241 through at least two elastic connecting parts 4243, so that the vibration transducer 424 can elastically constrain the relative motion of the magnetic circuit system 426 and the coil 422. When the transducer 42 vibrates, the vibration transducer 424 can confine the bracket 421 in the magnetic circuit system 426, so that the operation of the transducer 42 can remain stable.

[0163] Furthermore, such as Figure 20 As shown, the outer ring fixing part 4242 may be provided with a notch 4240, the outer end face of the magnetic circuit system 426 is exposed from the notch 4240, and the first abutting part 4271 and / or the second abutting part 4272 are configured to abut against the exposed portion of the outer end face of the magnetic circuit system 426 exposed from the notch 4240.

[0164] The exposed portion of the magnetic circuit system 426 exposed from the notch 4240 faces the axial direction Ax2 of the transducer 42, so that the first abutment portion 4271 and / or the second abutment portion 4272 can be disposed in the notch 4240 on the axial direction Ax2 of the transducer 42 and abut against the exposed portion of the magnetic circuit system 426.

[0165] In some implementations, such as Figure 20 and Figure 21 As shown, the number of notches 4240 can be at least two, and they are spaced apart along the circumference of the outer ring fixing part 4242. Each notch 4240 is connected to the outer edge of the outer ring fixing part 4242. In the circumference of the outer ring fixing part 4242, the ratio of the total width Wd1 of the at least two notches 4240 on the outer edge of the outer ring fixing part 4242 to the perimeter C of the outer edge of the outer ring fixing part 4242 can be less than or equal to 0.08 to 0.25.

[0166] Optionally, the perimeter C of the outer edge of the outer ring fixing portion 4242 can be between 35 mm and 65 mm. The total width Wd1 of the at least two notches 4240 on the outer edge of the outer ring fixing portion 4242 can be between 5 mm and 16 mm. For example, the perimeter C of the outer edge of the outer ring fixing portion 4242 can be 40.8 mm, 57.3 mm, or 64.5 mm, the total width Wd1 of the at least two notches 4240 on the outer edge of the outer ring fixing portion 4242 can be 5.6 mm, 10.7 mm, or 15.5 mm, and the ratio of the total width Wd1 of the at least two notches 4240 on the outer edge of the outer ring fixing portion 4242 to the perimeter C of the outer edge of the outer ring fixing portion 4242 can be equal to 0.13, 0.18, or 0.24.

[0167] Of course, in other embodiments, the ratio of the total width Wd1 of at least two notches 4240 on the outer edge of the outer ring fixing part 4242 to the perimeter C of the outer edge of the outer ring fixing part 4242 can be 0.14, 0.17, 0.21, etc.

[0168] If the ratio of the total width Wd1 to the perimeter C is too large, the total width Wd1 of the notch will be too large, which will affect the structural strength of the transducer 424. Therefore, setting the above reasonable ratio range can ensure the structural strength of the transducer 424, making it less likely for the transducer 424 to deform or break during vibration of the transducer 42. It also allows the clip 427 to more effectively fix the magnetic circuit system 426 when it abuts against the exposed part of the magnetic circuit system 426 through the notch 4240, so that the magnetic circuit system 426 is less likely to loosen and cause the conversion function of the transducer 42 to fail.

[0169] At least two notches 4240 may correspond to the first abutment portion 4271 and / or the second abutment portion 4272 of at least two card holders 427, and the first abutment portion 4271 and / or the second abutment portion 4272 of at least two card holders 427 may be fixed to the exposed portion of the magnetic circuit system 426 through the at least two notches 4240.

[0170] For example, there can be two clips 427. The outer ring fixing part 4242 can be provided with two notches 4240 for each clip 427. The two notches 4240 can be arranged along the axial direction Ax2 of the transducer 42. One notch 4240 corresponds to one side of the outer end face of the exposed magnetic circuit system 426, and the other notch 4240 corresponds to the other side of the outer end face of the exposed magnetic circuit system 426. The two exposed parts of the two exposed magnetic circuit systems 426 can correspond to the first abutment part 4271 and the second abutment part 4272. The first abutment part 4271 and the second abutment part 4272 can abut against the exposed part of the outer end face of the magnetic circuit system 426 that is exposed from the notch 4240.

[0171] This arrangement of the clip 427 and the transducer 424 not only makes the transducer 42 more compact, but also reduces the size of the transducer 42 in the axial direction Ax2.

[0172] In some implementations, such as Figure 19 and Figure 22 As shown, the transducer 42 may also include a magnetic shield 423, which is cylindrical and connected to the bracket 421. The coil 422 can be wound around the periphery of the magnetic shield 423. The inner ring fixing part 4241 is connected to the outer end face of the magnetic shield 423. The vibration plate 424 can be made of metal, specifically a magnetic metal part.

[0173] The magnetic shield 423 has a certain magnetic guiding function and is used to confine the magnetic field in the transducer 42. Specifically, the magnetic shield 423 can form a magnetic path with the vibration plate 424 and the magnetic circuit system 426. The coil 422 is wound around the outside of the magnetic shield 423 and positioned in the middle of the magnetic path. When the coil 422 is energized, the electric field of the coil 422 can interact with the magnetic field of the magnetic path, allowing the coil 422 on the magnetic circuit system 426 and the support 421 to move axially along Ax2, thereby causing the transducer 42 to vibrate.

[0174] In some implementations, such as Figure 22 As shown, the inner ring fixing part 4241 can be welded and fixed to the outer end face of the magnetic shield 423, and the outer ring fixing part 4242 can be welded and fixed to the outer end face of the magnetic circuit system 426.

[0175] Optionally, the outer ring fixing part 4242 can be welded and fixed to the outer end face of the annular magnetic guide plate 4264, and the annular magnetic guide plate 4264 can be fixed to the annular magnet 4261 so that the annular magnet 4261 can drive the movement between the outer ring fixing parts 4242 through the annular magnetic guide plate 4264 when it moves.

[0176] Welding can strengthen the connection between the transducer 424, the magnetic circuit system 426, and the magnetic shield 423, thereby enhancing the magnetic flux effect between the transducer 424, the magnetic circuit system 426, and the magnetic shield 423, and also improving the structural stability of the transducer 42.

[0177] like Figure 22 to Figure 23 As shown, in some embodiments of this application, the outer diameter R1 of the annular magnetic plate 4264 can be larger than the outer diameter R2 of the annular magnet 4261, and the inner diameter r1 of the annular magnetic plate 4264 can be smaller than the inner diameter r2 of the annular magnet 4261.

[0178] like Figure 23 As shown, the axis of the magnetic circuit system 426 can be as follows: Figure 23As shown by line ax2, the axial direction Ax2 of the magnetic circuit system 426 can be as follows: Figure 23 As shown. The outer diameter R1 of the annular magnetic plate 4264 is as follows. Figure 23 As shown in the mid-distance R1, the outer diameter R2 of the toroidal magnet 4261 can be as follows: Figure 23 As shown in the diagram, the intermediate distance R2, where R1 is greater than R2. The inner diameter r1 of the annular magnetic plate 4264 can be as follows: Figure 23 As shown in r1, the inner diameter r2 of the toroidal magnet 4261 is as follows: Figure 23 As shown in r2, where r1 is less than r2.

[0179] This configuration allows the radial dimension of the annular magnet 4261 to be smaller than that of the annular magnetic guide plate 4264, and the annular magnet 4261 to be positioned at the center of the annular magnetic guide plate 4264. This enables the annular magnet 4261 to move within a small range beyond the dimensions of the annular magnetic guide plate 4264. Furthermore, this configuration allows for a higher machining precision in the annular magnetic guide plate 4264 than in the annular magnet 4261. Therefore, when adding the annular magnet 4261, the annular magnetic guide plate 4264 can be used for positioning, facilitating accurate addition and assembly of the annular magnet 4261 and improving its positioning accuracy.

[0180] In some implementations, such as Figure 23 As shown, the ratio of the difference between the outer diameter R1 of the annular magnetic plate 4264 and the outer diameter R2 of the annular magnet 4261 to the radial width of the annular magnet 4261 can be between 0.002 and 0.007. That is, (R1-R2) / (R2-r2)=0.002~0.007.

[0181] The difference between the outer diameter R1 of the annular magnetic plate 4264 and the outer diameter R2 of the annular magnet 4261 is the distance from the edge of the outer diameter R1 of the annular magnetic plate 4264 to the outer diameter R2 of the annular magnet 4261.

[0182] Specifically, if the ratio is too large, the annular magnet 4261 will have a large radial movement amplitude. Therefore, when the magnetic circuit system 426 vibrates, the annular magnet 4261 is prone to radial displacement relative to the annular magnetic guide plate 4264, which will cause the transducer 42 to become eccentric and affect the vibration effect of the transducer 42. If the ratio is too small, the annular magnet 4261 will be difficult to position using the annular magnetic guide plate 4264, increasing the assembly difficulty of the transducer 42. Therefore, setting the above reasonable ratio range can improve the positioning accuracy between the annular magnet 4261 and the annular magnetic guide plate 4264, and at the same time reduce the radial movement amplitude of the annular magnet 4261, so as to further fix the position of the annular magnet 4261 in the transducer 42.

[0183] For example, the ratio of the difference between the outer diameter R1 of the annular magnetic plate 4264 and the outer diameter R2 of the annular magnet 4261 to the radial width of the annular magnet 4261 can be 0.003, 0.005, 0.006, etc.

[0184] In some embodiments, the difference between the outer diameter R1 of the annular magnetic plate 4264 and the outer diameter R2 of the annular magnet 4261 can be between 0.02 and 0.08 mm.

[0185] For example, the difference between the outer diameter R1 of the annular magnetic plate 4264 and the outer diameter R2 of the annular magnet 4261 can be 0.03mm, 0.05mm, 0.07mm, etc.

[0186] Similarly, if the difference between the outer diameter R1 of the annular magnetic plate 4264 and the outer diameter R2 of the annular magnet 4261 is too large, the annular magnet 4261 will easily shift radially relative to the annular magnetic plate 4264, causing the transducer 42 to become eccentric and affecting its vibration effect. If the difference is too small, the annular magnet 4261 will be difficult to position using the annular magnetic plate 4264, increasing the assembly difficulty of the transducer 42.

[0187] Therefore, by setting the difference between the outer diameter R1 of the annular magnetic guide plate 4264 and the outer diameter R2 of the annular magnet 4261 within the aforementioned reasonable range, the outer diameter R1 of the annular magnetic guide plate 4264 can exceed the outer diameter R2 of the annular magnet 4261, making the accuracy of the annular magnetic guide plate 4264 higher than that of the annular magnet 4261. This improves the positioning accuracy of the annular magnet 4261 and also reduces the size of the annular magnet 4261 and the annular magnetic guide plate 4264 in the radial direction of the magnetic circuit system 426, thereby reducing the size of the transducer 42.

[0188] In some embodiments, the ratio of the difference between the inner diameter r2 of the annular magnet 4261 and the inner diameter r1 of the annular magnetic plate 4264 to the radial width of the annular magnet 4261 can be between 0.003 and 0.009. That is, (r2-r1) / (R2-r2) = 0.003 to 0.009.

[0189] For example, the ratio of the difference between the inner diameter r2 of the annular magnet 4261 and the inner diameter r1 of the annular magnetic plate 4264 to the radial width of the annular magnet 4261 can be 0.004, 0.006, 0.008, etc.

[0190] Specifically, the difference between the inner diameter r2 of the annular magnet 4261 and the inner diameter r1 of the annular magnetic plate 4264 is the distance by which the edge of the inner diameter r1 of the annular magnetic plate 4264 extends beyond the inner diameter r2 of the annular magnet 4261, which is the difference obtained by subtracting r1 from r2.

[0191] If the ratio of the difference between the inner diameter r2 of the ring magnet 4261 and the inner diameter r1 of the ring magnetic plate 4264 to the radial width of the ring magnet 4261 is too large, the radial dimension of the ring magnet 4261 will be too small, thereby reducing the magnetic field strength of the ring magnet 4261 and making it prone to large radial displacement. If the ratio of the difference between the inner diameter r2 of the ring magnet 4261 and the inner diameter r1 of the ring magnetic plate 4264 to the radial width of the ring magnet 4261 is too small, it will be difficult to assemble the ring magnet 4261 with the ring magnetic plate 4264.

[0192] Therefore, by setting the ratio of the difference between the inner diameter r2 of the annular magnet 4261 and the inner diameter r1 of the annular magnetic guide plate 4264 to the radial width of the annular magnet 4261 as the above-mentioned reasonable value, the positioning accuracy between the annular magnet 4261 and the annular magnetic guide plate 4264 can be improved, thereby further fixing the position of the annular magnet 4261 in the transducer 42. At the same time, it can also reduce the radial movement amplitude of the annular magnet 4261 and ensure the magnetic field strength of the annular magnet 4261.

[0193] In some embodiments, the difference between the inner diameter r2 of the annular magnet 4261 and the inner diameter r1 of the annular magnetic plate 4264 can be between 0.02 and 0.08 mm. For example, the difference between the inner diameter r2 of the annular magnet 4261 and the inner diameter r1 of the annular magnetic plate 4264 can be 0.03 mm, 0.05 mm, 0.07 mm, etc.

[0194] Similarly, if the difference between the inner diameter r2 of the annular magnet 4261 and the inner diameter r1 of the annular magnetic guide plate 4264 is too large, the radial dimension of the annular magnet 4261 will be too small, thereby reducing the magnetic field strength of the annular magnet 4261. Furthermore, the annular magnet 4261 is prone to large radial displacement, leading to unstable vibration of the transducer 42. If the difference between the inner diameter r2 of the annular magnet 4261 and the inner diameter r1 of the annular magnetic guide plate 4264 is too small, it will be difficult to assemble the annular magnet 4261 into the corresponding annular magnetic guide plate 4264.

[0195] Therefore, by setting the difference between the inner diameter r2 of the annular magnet 4261 and the inner diameter r1 of the annular magnetic guide plate 4264 within the aforementioned reasonable range, the precision of the annular magnetic guide plate 4264 can be higher than that of the annular magnet 4261, thereby improving the positioning accuracy of the annular magnet 4261 and facilitating its assembly. Furthermore, this arrangement also ensures the magnetic field strength of the annular magnet 4261, preventing it from undergoing significant radial displacement, thus guaranteeing the vibration effect of the transducer 42. It also allows for a reduction in the radial dimension of the annular magnet 4261 within the magnetic circuit system 426, thereby reducing the size of the transducer 42.

[0196] In some embodiments, the axial thickness Hd3 of the annular magnetic plate 4264 can be smaller than the axial thickness Hd2 of the annular magnet 4261. For example... Figure 23 As shown, the axial thickness Hd3 of the annular magnetic plate 4264 can be as follows: Figure 23 As shown in the figure, the axial thickness Hd2 of the toroidal magnet 4261 can be as follows: Figure 23 The medium thickness Hd2 is shown, where Hd3 is smaller than Hd2.

[0197] Since the ring magnet 4261 primarily functions as a magnetic field generator, its axial thickness Hd2 has specific requirements to ensure it generates corresponding vibration signals. The ring magnetic guide plate 4264 mainly improves the positioning accuracy of the ring magnet 4261 for easier installation. Therefore, setting the axial thickness Hd3 of the ring magnetic guide plate 4264 to be less than the axial thickness Hd2 of the ring magnet 4261 prevents it from interfering with the magnetic field of the ring magnet 4261, thus further ensuring the vibration effect of the transducer 42.

[0198] Furthermore, the smaller axial thickness Hd3 of the annular magnetic guide plate 4264 can reduce the size of the transducer 42 in the axial direction Ax2 and improve the positioning accuracy of the annular magnet 4261, thus facilitating the positioning and installation of the annular magnet 4261.

[0199] In some implementations, such as Figure 19 As shown, the annular magnet 4261 may include a first annular magnet 4262 and a second annular magnet 4263, and the annular magnetic guide plate 4264 may include a first annular magnetic guide plate 4265, a second annular magnetic guide plate 4266 and a third annular magnetic guide plate 4267.

[0200] The first annular magnetic plate 4265 can be clamped between the first annular magnet 4262 and the second annular magnet 4263 along the axial direction Ax2. The second annular magnetic plate 4266 can be disposed on the outer end face of the first annular magnet 4262 away from the second annular magnet 4263. The third annular magnetic plate 4267 can be disposed on the outer end face of the second annular magnet 4263 away from the first annular magnet 4262.

[0201] The first annular magnet 4262 and the second annular magnet 4263 can be two magnets with repulsive polarities. The repulsive polarities of the first annular magnet 4262 and the second annular magnet 4263 can cause the magnetic induction lines to concentrate in the magnetic gap between the first annular magnet 4262 and the second annular magnet 4263, thereby increasing the effect of the magnetic field of the magnetic gap and thus improving the sensitivity of the magnetic circuit system 426.

[0202] After the transducer 42 is energized, the magnetic fields of the first annular magnet 4262 and the second annular magnet 4263 can cause them to move under the influence of the electric field. The first annular magnetic guide plate 4265, the second annular magnetic guide plate 4266, and the third annular magnetic guide plate 4267 can constrain the magnetic fields of the first annular magnet 4262 and the second annular magnet 4263, thereby concentrating the magnetic fields and increasing the interaction between the magnetic field and the electric field, thus improving the vibration effect of the transducer 42. Moreover, placing the first annular magnet 4262 between the second annular magnet 4263 and the first annular magnetic guide plate 4265 allows the second annular magnet 4263 and the first annular magnetic guide plate 4265 to more accurately position and fix the first annular magnet 4262 in the axial direction Ax2. Furthermore, by placing the second annular magnet 4263 between the third annular magnetic guide plate 4267 and the first annular magnetic guide plate 4265, the second annular magnet 4263 can be more accurately positioned and fixed in the axial direction Ax2 by the third annular magnetic guide plate 4267 and the first annular magnetic guide plate 4265.

[0203] In some implementations, such as Figure 17 and Figure 19 As shown, the coil 422 is arranged to overlap with the first annular magnetic plate 4265 along the axial direction Ax2.

[0204] Specifically, coil 422 and ring magnet 4261 are radially aligned. Coil 422 can be energized to allow an electrical signal carrying audio information to pass through it. The electric field generated by coil 422 acts on the magnetic field of ring magnet 4261, causing relative movement between the ring magnet 4261 and coil 422. Since ring magnet 4261 is fixed to ring magnetic plate 4264, ring magnet 4261 can drive ring magnetic plate 4264 to vibrate together.

[0205] Optionally, such as Figure 17 and Figure 19 As shown, the outer ring fixing part 4242 is connected to the outer end face of the second annular magnetic guide plate 4266 or the third annular magnetic guide plate 4267, and the inner ring fixing part 4241 is connected to the outer end face of the magnetic guide cover 423. The vibration transducer 424 is connected to the second annular magnetic guide plate 4266 or the third annular magnetic guide plate 4267 via the outer ring fixing part 4242, and further connected to the first annular magnet 4262 or the second annular magnet 4263 via the second annular magnetic guide plate 4266 or the third annular magnetic guide plate 4267.

[0206] Optionally, the transducer 424 can be a magnetic conductor, which can limit the magnetic field of the transducer 42, facilitate the magnetic field to converge towards the coil 422, increase the magnetic field strength at the coil 422, and thus improve the vibration effect of the transducer 42. Furthermore, the coil 422 can be positioned in the middle of the magnetic path, so that when the coil 422 is energized, the electric field generated by the coil 422 interacts with the magnetic path, causing the coil 422 and the magnetic circuit system 426 to move relative to each other, thereby enabling the transducer 42 to convert electrical energy into mechanical vibration.

[0207] When the magnetic circuit system 426 and the coil 422 stop vibrating, at least two elastic connecting parts 4243 can also elastically return the inner ring fixing part 4241, so that the bracket 421 and the magnetic shield 423 can also return to their original positions opposite to the magnetic circuit system 426.

[0208] Optionally, the number of elastic connecting parts 4243 can be four. Four elastic connecting parts 4243 can make the vibration plate 424 more uniformly stressed, thereby improving the structural stability of the vibration plate 424.

[0209] In some implementations, such as Figure 17 and Figure 19 As shown, the clip 427 can be configured to clamp the outer end faces of the second annular magnetic plate 4266 and the third annular magnetic plate 4267 along the axial direction Ax2.

[0210] like Figure 2 As shown, in some embodiments, the speaker assembly 3 may further include an air-conducting speaker 50. The air-conducting speaker 50 is capable of converting an electrical signal containing relevant audio information into a sound wave signal.

[0211] Specifically, the air-conducting speaker 50 provides air-conducted sound in a first frequency band, and the bone-conducting speaker 40 provides bone-conducted sound in a second frequency band, which is at least partially higher than the first frequency band. In other words, the air-conducting speaker 50 provides sound in a lower frequency band, and the bone-conducting speaker 40 enhances the sound in a higher frequency band. This arrangement enhances the sound-gathering effect of the speaker assembly 3, making low-frequency and high-frequency sounds clearer.

[0212] In some implementations, such as Figure 24 as well as Figure 25 As shown, the bone conduction loudspeaker 40 may include a core housing 41, a first transducer 45, and a transducer 42. The first transducer 45 connects the core housing 41 and the transducer 42 to suspend the transducer 42 inside the core housing 41.

[0213] The transducer 42 is the main device in the bone conduction loudspeaker 40 that converts electrical signals into vibration signals. The transducer 42 can be disposed inside the core housing 41, and the core housing 41 can relatively fix the transducer 42. The first vibration transducer 45 is used to confine the transducer 42 to vibrate within the core housing 41 when it vibrates mechanically, so that the transducer 42 is not easy to fall out of the core housing 41.

[0214] In some implementations, such as Figure 25 As shown, the transducer 42 may also include a bracket 421, a coil 422, a magnetic circuit system 426, and a second transducer 424. The second transducer 424 connects the magnetic circuit system 426 and the bracket 421 to elastically suspend the magnetic circuit system 426 on the periphery of the bracket 421. The coil 422 is disposed on the bracket 421 and located inside the magnetic circuit system 426.

[0215] Optionally, the first transducer 45 can be a non-magnetic material, and the second transducer 424 can be a magnetic material. The material of the first transducer 45 can be, for example, a non-magnetic metal such as stainless steel or copper, or any other non-metallic material that meets the corresponding requirements. The second transducer 424 can be a metallic material with magnetic properties, such as a material containing metallic elements such as iron, cobalt, or nickel.

[0216] Since the primary function of the first transducer 45 is to fix the transducer 42 within the housing 41, designing it as a non-magnetic material reduces its attraction to the magnetic circuit system 426, thus minimizing eccentricity and reducing its impact on the vibration of the transducer 42. Furthermore, the elasticity of the first transducer 45 suspends the transducer 42 within the housing 41, reducing the transmission of vibrations from the transducer 42 to the housing 41 and consequently reducing vibrations in the housing, thus minimizing sound leakage.

[0217] The first transducer plate 45, which is non-magnetic, ensures that the position of the transducer 42 is more stable and not eccentric, thereby making the transducer 42 work more stably and generating more stable vibrations. Based on this, the second transducer plate 424 is made of magnetic material, which allows it to constrain the magnetic field in the transducer 42 and facilitates the convergence of the magnetic field towards the coil 422, increasing the magnetic field strength at the coil 422 and thus improving the vibration effect of the transducer 42.

[0218] In some implementations, such as Figure 26As shown, the first vibration transducer 45 may have a major axis direction LD1 and a minor axis direction SD1 that are perpendicular to each other. The size of the first vibration transducer 45 along the major axis direction LD1 may be larger than the size along the minor axis direction SD1. The elastic modulus of the first vibration transducer 45 along the major axis direction LD1 may be set to be greater than 15000 N / m, and / or the elastic modulus along the minor axis direction SD1 may be set to be greater than 6500 N / m.

[0219] Optionally, Hooke's law of materials can be used to calculate the elastic coefficient of the first vibration transducer 45. For example, when measuring the elastic coefficient of the first vibration transducer 45 along its long axis LD1, one end of the first vibration transducer 45 along its long axis LD1 can be fixed, and a weight can be hung on the other end along its long axis LD1. After the deformation of the first vibration transducer 45 along its long axis LD1 stabilizes, the displacement of the end with the weight is measured. Then, based on the mass of the weight and the displacement of the end of the first vibration transducer 45 with the weight, the elastic coefficient of the first vibration transducer 45 along its long axis LD1 can be calculated. The elastic coefficient of the first vibration transducer 45 along its short axis SD1 can also be measured and calculated using the same method.

[0220] Among them, the long axis direction LD1 of the first transducer 45 can be as follows: Figure 26 As indicated by arrow LD1, the dimension of the first transducer 45 along its major axis LD1 can be represented by the length ld1. The dimension of the first transducer 45 along its minor axis SD1 can be represented as shown below. Figure 26 As shown in the SD1 direction, the dimension of the first transducer 45 along the short axis SD1 can be as shown in the length sd1.

[0221] If the elastic coefficients along the long axis LD1 and the short axis SD1 are too small, the first transducer 45 is prone to deformation in the long axis LD1 and / or the short axis SD1, leading to misalignment of the transducer 42 and unstable vibration, which in turn makes the bone conduction speaker 40 prone to noise. Setting the elastic coefficients along the long axis LD1 and / or the short axis SD1 of the first transducer 45 to the aforementioned range allows the first transducer 45 to have greater rigidity in the long axis LD1 and / or the short axis SD1, making it less prone to deformation in the corresponding directions. This reduces the occurrence of lateral deformation of the first transducer 45 under the vibration of the transducer 42, reduces noise generated by the speaker assembly 3 due to the vibration of the first transducer 45, and reduces misalignment of the transducer 42, thus ensuring the vibration effect of the bone conduction speaker 40 and improving its structural stability.

[0222] For example, the elastic modulus of the first vibration transducer 45 along the long axis direction LD1 can be set to 20000 N / m, 25000 N / m, or 30000 N / m. Optionally, the elastic modulus of the first vibration transducer 45 along the short axis direction SD1 can be set to 6500 N / m, 7000 N / m, or 8000 N / m.

[0223] In some implementations, such as Figure 26 As shown, the first transducer 45 may include a first inner ring fixing part 451, a first outer ring fixing part 452, and at least two first elastic connecting parts 453. The first outer ring fixing part 452 may be disposed around the periphery of the first inner ring fixing part 451, and at least two first elastic connecting parts 453 are connected between the first inner ring fixing part 451 and the first outer ring fixing part 452. The first outer ring fixing part 452 is assembled and fixed to the movement housing 41 and the first inner ring fixing part 451 is assembled and fixed to the bracket 421 by a plug-in method.

[0224] When the transducer 42 vibrates mechanically relative to the housing 41, the bracket 421 causes the first inner ring fixing part 451 to vibrate. When the first inner ring fixing part 451 vibrates, it causes at least two first elastic connecting parts 453 to elastically deform, thus confining the transducer 42 within the housing 41. When the transducer 42 stops vibrating, the at least two first elastic connecting parts 453 can restore the transducer 42 to its original position by restoring the first inner ring fixing part 451.

[0225] Furthermore, the first outer ring fixing part 452 and the core housing 41, as well as the first inner ring fixing part 451 and the bracket 421, are assembled and fixed by a plug-in method, which facilitates the installation of the first transducer 45, thereby simplifying the installation of the speaker assembly 3, improving assembly efficiency, and reducing the assembly difficulty of the speaker assembly 3.

[0226] For example, in some embodiments, the number of first elastic connecting portions 453 can be four, and the four first elastic connecting portions 453 can be evenly disposed on the first outer ring fixing portion 452 and the first inner ring fixing portion 451. When the first inner ring fixing portion 451 is moved and displaced, the four first elastic connecting portions 453 can elastically deform together to limit the first inner ring fixing portion 451, thereby making the force on the first inner ring fixing portion 451 and the first outer ring fixing portion 452 more balanced, so as to improve the structural stability of the first vibration transducer 45.

[0227] In some implementations, such as Figure 25 to Figure 27As shown, the bone conduction speaker 40 may also include a vibrating plate 431. The bracket 421 facing the first inner ring fixing portion 451 may be provided with a first insertion hole 4203 and a plurality of first insertion posts 4204, which are arranged around and spaced apart from the periphery of the first insertion hole 4203. The first inner ring fixing portion 451 may be provided with an exposed hole 4501 and a plurality of mounting holes 4502, which are arranged around and spaced apart from the periphery of the exposed hole 4501. The first insertion hole 4203 is exposed through the exposed hole 4501, and the first insertion posts 4204 are inserted into the corresponding mounting holes 4502.

[0228] The vibrating plate 431 may be provided with a second connector 4310 and a plurality of second connector holes 4311. The plurality of second connector holes 4311 are arranged around and spaced apart from the second connector 4310. The second connector 4310 is engaged with the first connector hole 4203, and the first connector 4204 is engaged with the second connector hole 4311.

[0229] The vibration plate 431 and the bracket 421 can further fix the first inner ring fixing part 451 between the vibration plate 431 and the bracket 421 by plugging and connecting, thereby improving the assembly efficiency and enabling the first transducer 45 to achieve a stronger connection with the transducer 42, thereby further improving the structural stability of the bone conduction speaker 40.

[0230] Furthermore, when the transducer 42 experiences mechanical vibration, the transducer 42 can drive the vibrating plate 431 to vibrate, so as to transmit the vibration signal to the human body through the vibrating plate 431.

[0231] Furthermore, such as Figure 17 to Figure 19 As shown, the second transducer 424 may include a second inner ring fixing portion 4241, a second outer ring fixing portion 4242, and at least two second outer elastic connecting portions 4243. The second outer ring fixing portion 4242 is disposed around the periphery of the second inner ring fixing portion 4241, and at least two second outer elastic connecting portions 4243 are connected between the second inner ring fixing portion 4241 and the second outer ring fixing portion 4242. The second outer ring fixing portion 4242 is connected to the outer end face of the magnetic circuit system 426, and the second inner ring fixing portion 4241 is connected to the outer end face of the magnetic conductive cover 423.

[0232] In some implementations, such as Figure 19As shown, the second inner ring fixing part 4241 can be welded and fixed to the outer end face of the magnetic guide cover 423, and the second outer ring fixing part 4242 can be welded and fixed to the outer end face of the magnetic circuit system 426. Welding facilitates the installation of the second transducer 424 on the outer end face of the magnetic circuit system 426 and the outer end face of the magnetic guide cover 423, simplifying the assembly process of the transducer 42. Furthermore, welding strengthens the connection between the second transducer 424 and the magnetic circuit system 426 and the magnetic guide cover 423, making the structure of the transducer 42 more robust and stable.

[0233] In some embodiments, the coverage of the second outer ring fixing part 4242 on the outer end face of the magnetic circuit system 426 can be greater than or equal to 60%, and / or the coverage of the second inner ring fixing part 4241 on the outer end face of the magnetic shield 423 can be greater than or equal to 60%.

[0234] The outer end face of the magnetic circuit system 426 refers to the end face of the magnetic circuit system 426 facing the axial direction Ax2. The outer end face of the magnetic circuit system 426 can be perpendicular to the axial direction Ax2 of the transducer 42.

[0235] Specifically, the coverage of the second outer ring fixing part 4242 on the outer end face of the magnetic circuit system 426 can be the overlapping portion of the second outer ring fixing part 4242 and the outer end face of the magnetic circuit system 426 along the axial direction Ax2 of the transducer 42. The coverage of the second inner ring fixing part 4241 on the outer end face of the magnetic conductive cover 423 can also be the overlapping portion of the second inner ring fixing part 4241 and the outer end face of the magnetic conductive cover 423 along the axial direction Ax2 of the transducer 42.

[0236] For example, the coverage of the second outer ring fixing part 4242 on the outer end face of the magnetic circuit system 426 can be 70%, 80%, or 90%. Optionally, the coverage of the second inner ring fixing part 4241 on the outer end face of the magnetic shield 423 can be 70%, 80%, or 90%.

[0237] If the coverage of the second outer ring fixing part 4242 on the outer end face of the magnetic circuit system 426 is too small, it will lead to unstable fixing of the second outer ring fixing part 4242 and the magnetic circuit system 426, and will also reduce the magnetic conductivity of the second transducer 424, thus weakening the enhancement effect on the magnetic field strength of the magnetic gap. Therefore, setting the coverage of the second outer ring fixing part 4242 on the outer end face of the magnetic circuit system 426 to the above value can ensure the fixing effect of the second outer ring fixing part 4242 and the magnetic circuit system 426, and also enhance the magnetic conductivity of the second transducer 424, thereby enhancing the magnetic field strength of the magnetic gap.

[0238] If the coverage of the second inner ring fixing part 4241 on the outer end face of the magnetic guide cover 423 is too small, it will also lead to a poor fixing effect between the second inner ring fixing part 4241 and the outer end face of the magnetic guide cover 423, and will also lead to a decrease in the magnetic field confinement effect of the second transducer 424. Therefore, by setting the coverage of the second outer ring fixing part 4242 on the outer end face of the magnetic circuit system 426 to the above value, the connection between the second transducer 424 and the magnetic circuit system 426 and the magnetic guide cover 423 can be strengthened, so that the second transducer 424 is less likely to detach from the magnetic circuit system 426 and the magnetic guide cover 423 during movement, thereby improving the structural stability of the bone conduction speaker 40 and also improving the magnetic field confinement effect.

[0239] In some implementations, such as Figure 28 as well as Figure 29 As shown, when viewed along the vibration direction of the transducer 42, at least two second outer elastic connecting portions 4243 may have a first area S3, and the annular region between the outer edge of the second inner ring fixing portion 4241 and the inner edge of the second outer ring fixing portion 4242 may have a second area S4. The ratio of the first area S3 to the second area S4 may be between 0.2 and 0.7.

[0240] Among them, the first area S3 can be as follows Figure 29 As shown in the shaded area, the second area S4 can be as follows Figure 28 The shaded area is shown in the image.

[0241] Specifically, at least two second outer elastic connecting portions 4243 are disposed within the annular region between the outer edge of the second inner ring fixing portion 4241 and the inner edge of the second outer ring fixing portion 4242. The ratio of the first area S3 to the second area S4 can also characterize the area ratio of the at least two second outer elastic connecting portions 4243 to the annular region.

[0242] If the area of ​​the first area S3 is too large, resulting in an excessively large ratio between the first area S3 and the second area S4, the elasticity of at least two second external elastic connecting portions 4243 will be reduced, thereby affecting the vibration effect of the transducer 42. If the area of ​​the first area S3 is too small, resulting in an excessively small ratio between the first area S3 and the second area S4, the magnetic field converging effect of at least two second external elastic connecting portions 4243 will be affected, leading to a decrease in the magnetic field confinement effect of the second vibration transducer 424.

[0243] Therefore, by setting the area ratio of at least two second outer elastic connecting portions 4243 to the annular region between 0.2 and 0.7, the at least two second outer elastic connecting portions 4243 can have a certain magnetic field converging effect to constrain and concentrate the magnetic field. At the same time, limiting the area of ​​the at least two second outer elastic connecting portions 4243 can further limit the elasticity of the at least two second outer elastic connecting portions 4243, so that the at least two second outer elastic connecting portions 4243 will not affect the vibration effect of the transducer 42 due to excessive elasticity.

[0244] For example, the first area S3 of at least two second outer elastic connecting portions 4243 can be 12.5, 14 or 15.5 square millimeters, the second area S4 of the annular region between the outer edge of the second inner ring fixing portion 4241 and the inner edge of the second outer ring fixing portion 4242 can be 33.5, 35 or 36.5 square millimeters, and the ratio of the first area S3 to the second area S4 can be 0.4.

[0245] Of course, in other embodiments, the ratio of the first area S3 to the second area S4 can also be 0.3, 0.5, 0.6, etc.

[0246] In some implementations, such as Figure 29 As shown, the second outer elastic connecting portion 4243 may include a first connecting portion 4244, a second connecting portion 4245, and an elastic portion 4246. The first connecting portion 4244 can be connected to the outer edge of the second inner ring fixing portion 4241, the second connecting portion 4245 can be connected to the inner edge of the second outer ring fixing portion 4242, and the elastic portion 4246 is located between the first connecting portion 4244 and the second connecting portion 4245. The elastic portion 4246 can be spaced apart from the outer edge of the second inner ring fixing portion 4241 and the inner edge of the second outer ring fixing portion 4242, with the spacing distance between 0.1mm and 0.4mm. For example, the spacing distance can be 0.17mm, 0.26mm, 0.29mm, 0.35mm, etc. On a plane perpendicular to the axial direction Ax2, the width of the elastic portion 4246 can be 0.28mm, 0.34mm, 0.41mm, etc.

[0247] Specifically, during the elastic movement of the second outer elastic connecting part 4243, the main area undergoing elastic deformation is the elastic part 4246. The distance between the elastic part 4246 and the outer edge of the second inner ring fixing part 4241 and the inner edge of the second outer ring fixing part 4242 affects the size of the elastic part 4246. Therefore, setting the distance between 0.1mm and 0.4mm allows the elastic part 4246 to have a larger volume, thus effectively concentrating the magnetic field and preventing it from easily contacting the second inner ring fixing part 4241 and the second outer ring fixing part 4242. Especially when the elastic part 4246 undergoes elastic deformation and drives the second inner ring fixing part 4241 to vibrate, the elastic part 4246 is less likely to interfere with the second inner ring fixing part 4241 and the second outer ring fixing part 4242, thereby ensuring the vibration effect of the transducer 42.

[0248] In some implementations, such as Figure 29 As shown, the second vibration transducer 424 may have a major axis direction LD2 and a minor axis direction SD2. The size of the second vibration transducer 424 along the major axis direction LD2 is larger than the size along the minor axis direction SD2. The elastic modulus of the second vibration transducer 424 along the major axis direction LD2 is set to be greater than or equal to 55000 N / m, and / or the elastic modulus of the second vibration transducer 424 along the minor axis direction SD2 is set to be greater than or equal to 9500 N / m.

[0249] Among them, the long axis direction LD2 of the second transducer 424 can be as follows: Figure 29 As indicated by arrow LD2, the dimension of the second transducer 424 along its major axis LD2 can be represented by the length ld2. The minor axis SD2 of the second transducer 424 can be represented as shown below. Figure 29 As indicated by the arrow SD2 in the middle, the dimension of the second transducer 424 along the short axis direction SD2 can be the length sd2 shown.

[0250] Specifically, if the elastic coefficients of the second transducer 424 in the long axis direction LD2 and the short axis direction SD2 are too small, the second transducer 424 is prone to deformation when the transducer 42 vibrates, which in turn causes the transducer 42 to be misaligned and the vibration to be unstable, which in turn makes the bone conduction speaker 40 prone to generating noise.

[0251] Therefore, by setting the elastic modulus of the second transducer 424 along its long axis LD2 to be greater than or equal to 55000 N / m and the elastic modulus along its short axis SD2 to be greater than or equal to 9500 N / m, the second transducer 424 can have a certain degree of rigidity to separate the magnetic shield 423 from the magnetic circuit system 426, thus preventing the magnetic shield 423 from adsorbing together with the magnetic circuit system 426 as much as possible. At the same time, by setting the elastic modulus of the second transducer 424 in both the long axis LD2 and short axis SD2 to be relatively large, the elastic part 4246 of the second transducer 424 is less likely to break or deform due to high vibration intensity during vibration, thereby improving the reliability and structural stability of the second transducer 424 and ensuring the vibration effect of the transducer 42.

[0252] For example, the elastic modulus of the second vibration transducer 424 along the major axis direction LD2 can be set to 60000 N / m, 70000 N / m, 80000 N / m, etc. Optionally, the elastic modulus of the second vibration transducer 424 along the minor axis direction SD2 can be set to 10000 N / m, 20000 N / m, 25000 N / m, etc.

[0253] In some implementations, such as Figure 2 and Figure 25 As shown, the bone conduction speaker 40 may also include a vibration transmission face-fitting component 43 and an auxiliary face-fitting component 44.

[0254] The vibration transmission assembly 43 may include a vibrating plate 431 and a soft vibration transmission element 432. The vibrating plate 431 is connected to the transducer 42, and the soft vibration transmission element 432 may be disposed on the vibrating plate 431. When the transducer 42 vibrates, the bracket 421 in the transducer 42 will further drive the vibrating plate 431 to vibrate, and the vibrating plate 431 can also further drive the soft vibration transmission element 432 to vibrate to generate a vibration signal.

[0255] Furthermore, the auxiliary face-fitting component 44 may also include a rigid support member 441 and a soft fitting member 442. The rigid support member 441 is connected to the mechanism housing 41, and the soft fitting member 442 is disposed on the rigid support member 441. The soft fitting member 442 and the soft vibration transmission member 432 are used to contact the facial area in front of the tragus when worn. Optionally, the rigid support member 441 may be connected to the mechanism housing 41, and the soft fitting member 442 may be disposed on the side of the rigid support member 441 facing away from the mechanism housing 41.

[0256] The rigid support 441 and the soft fitting 442 define the exposed area of ​​the soft vibration transmission element 432, so that the soft vibration transmission element 432 can contact the face area in front of the tragus when worn, and can transmit vibration signals to the human body.

[0257] The soft fitting part 442 and the soft vibration transmission part 432 can make contact with the face area in front of the tragus at the same time, which can increase the contact area between the speaker assembly 3 and the human face, thereby improving the wearing comfort of the speaker assembly 3.

[0258] Optionally, in its natural state, the protrusion height Ht2 of the soft bonding member 442 relative to the soft vibration transmission member 432 is between 0.4 and 1 mm. For example, the protrusion height Ht2 of the soft bonding member 442 relative to the soft vibration transmission member 432 can be 0.5 mm, 0.6 mm, or 0.8 mm.

[0259] Optionally, the soft fitting 442 may be softer than the soft vibration transmission member 432, so that when the speaker assembly 3 is worn, the soft fitting 442 can improve the wearing comfort of the speaker assembly 3, and can also be pressed and made flat with the soft vibration transmission member 432 to fit together with the human face, thereby distributing the pressure borne by the soft vibration transmission member 432, so as to further improve the vibration effect of the soft vibration transmission member 432.

[0260] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A loudspeaker assembly, characterized in that, The speaker assembly includes at least one of a battery and a control circuit board. The speaker assembly also includes a bone conduction speaker. The bone conduction speaker includes a core housing, a first transducer, a vibrating plate, a transducer, and a cover. The transducer includes a bracket. The first transducer connects the bracket and the core housing to suspend the transducer inside the core housing. The vibrating plate is connected to the bracket. The bracket has a first weight-reducing cavity located inside the core housing and having an open end. The cover is used to seal the open end of the first weight-reducing cavity.

2. The loudspeaker assembly according to claim 1, characterized in that, The mechanism housing includes a bottom wall and a peripheral side wall connected to the bottom wall to form an accommodating space with an opening at one end. The transducer is disposed in the accommodating space, and the opening end of the first weight reduction cavity is disposed facing the bottom wall.

3. The loudspeaker assembly according to claim 1, characterized in that, The cover is configured to seal the first weight-reducing cavity on one side of the open end of the first weight-reducing cavity.

4. The loudspeaker assembly according to claim 1, characterized in that, The cover has a second weight-reducing cavity on the side facing the first weight-reducing cavity, and the first weight-reducing cavity and the second weight-reducing cavity are connected to each other.

5. The loudspeaker assembly according to claim 1, characterized in that, The cover is detachably connected to the bracket.

6. The loudspeaker assembly according to claim 5, characterized in that, The bracket is provided with a connector hole located around the first weight reduction cavity. The cover includes a cover plate body and a connector post disposed on one side of the cover plate body. The connector post is inserted into the connector hole. The cover plate body seals the opening end of the first weight reduction cavity.

7. The loudspeaker assembly according to claim 1, characterized in that, The transducer also includes a coil wound around the periphery of the bracket. The bracket is provided with a bracket lead hole, which connects the first weight reduction cavity and the periphery of the bracket. The lead end of the coil is further introduced into the first weight reduction cavity through the bracket lead hole.

8. The loudspeaker assembly according to claim 7, characterized in that, The bone conduction loudspeaker also includes leads configured to connect to the leads of the coil within the first weight-reduction cavity.

9. The loudspeaker assembly according to claim 7, characterized in that, The transducer further includes a magnetic shield, which is cylindrical and has a connecting hole that connects the inner and outer walls of the magnetic shield radially. The coil is wound on the outer wall. The bracket is formed on the magnetic shield and includes a bracket body and a connecting part. The bracket body is at least partially disposed inside the inner wall. The connecting part is disposed in the connecting hole. The bracket lead hole is disposed on the connecting part.

10. The loudspeaker assembly according to claim 1, characterized in that, The bone conduction speaker also includes a vibration transmission and face-fitting assembly. The movement housing includes a bottom wall and peripheral side walls connected to the bottom wall to form an accommodating space with an opening at one end. The transducer is placed within the accommodating space through the opening end of the movement housing. The transducer includes a bracket, the first vibration transducer connects the bracket and the core housing to elastically suspend the transducer inside the core housing, the vibration transducer faceplate assembly is assembled and fixed on the bracket along the spacing direction between the bracket and the bottom wall, and the bottom wall is provided with a through hole opposite to the bracket.

11. The loudspeaker assembly according to claim 10, characterized in that, When viewed along the vibration direction of the transducer, the bone conduction loudspeaker has a long axis direction and a short axis direction, and the size of the bone conduction loudspeaker along the long axis direction is larger than the size along the short axis direction. The number of through holes is two, and the two through holes are spaced apart along the long axis direction.

12. The loudspeaker assembly according to claim 10, characterized in that, In a reference plane perpendicular to the vibration direction of the transducer, the through hole forms a first projection area along the vibration direction in the reference plane, and the bracket forms a second projection area along the vibration direction in the reference plane. The area ratio of the overlapping portion of the first projection area and the second projection area to the area of ​​the second projection area is greater than or equal to 0.

3.

13. The loudspeaker assembly according to claim 10, characterized in that, The first vibration transducer includes an inner ring fixing part, an outer ring fixing part, and at least two elastic connecting parts. The outer ring fixing part is arranged around the periphery of the inner ring fixing part, and the at least two elastic connecting parts are connected between the inner ring fixing part and the outer ring fixing part.

14. The loudspeaker assembly according to claim 13, characterized in that, The inner ring fixing part is connected to the bracket, the outer ring fixing part is connected to the movement housing, and the radial dimension of the vibration transmission face-fitting assembly is greater than the radial dimension of the outer ring fixing part.

15. The loudspeaker assembly according to claim 14, characterized in that, The vibration transmission and face-fitting assembly includes a vibration plate, a soft vibration transmission component, and a rigid support. The central region of the soft vibration transmission component is molded and fixed to the vibration plate, and the edge region of the soft vibration transmission component is molded and fixed to the rigid support. The vibration plate and the support are inserted and fitted along the interval direction. The rigid support is connected to the core housing, and the radial dimension of the rigid support is larger than the radial dimension of the outer ring fixing part.

16. An earphone, characterized in that, The headphones include a speaker assembly as described in any one of claims 1-15 and a wearing component connected to the speaker assembly, the wearing component being used to position the speaker assembly on the face region in front of the user's tragus when worn.

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