Magnetic connector and bone conduction speaker

Abstract

The present application discloses a magnetic suction connector, characterized in that the magnetic suction connector includes: a magnetic suction ring, wherein the outer end surface of the magnetic suction ring is rotationally symmetrical with respect to a preset symmetry point; a first terminal and a second terminal are arranged in the magnetic suction ring, and respectively have a first contact surface and a second contact surface visible from the outer end surface of the magnetic suction ring; the outer end surface of the magnetic suction ring is hollow, so that when the magnetic suction ring is adsorbed with the annular magnetic adsorption structure of the corresponding connector, it will be adsorbed and constrained in multiple directions of the ring to accurately position the first contact surface and the second contact surface. In the above manner, the present application can improve the accuracy of docking with the corresponding connector and facilitate assembly and use.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a magnetic connector and a bone conduction speaker device. Background Art

[0002] With the development of technology, the charging methods of electronic devices are constantly changing. In order to adapt to the changes in charging methods, the structure of the corresponding power interface is also constantly changing adaptively.

[0003] Magnetic power connectors, a form of power connector, are increasingly being used in various electronic devices, such as bone conduction MP3 players, bone conduction headphones, and other bone conduction speaker devices. Because a power supply has a positive and negative terminal, if the positive and negative terminals of the electronic device's charging connector are not aligned with those of the charger's charging connector when charging the electronic device, a good electrical connection cannot be established, thereby reducing the charging efficiency of the electronic device. Furthermore, there is typically only one way to align the positive and negative terminals of the electronic device's charging connector with those of the charger. Furthermore, during the production process, there is only one relative positional relationship between the magnetic structure and the positive and negative terminals of the power connector, causing inconvenience for both user use and production assembly. Summary of the Invention

[0004] The main technical problem solved by the present application is to provide a magnetic connector and a bone conduction speaker device, which can improve the accuracy of docking with the corresponding connector and facilitate assembly and use.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a magnetic attraction connector, characterized in that the magnetic attraction connector includes: a magnetic attraction ring, wherein the outer end surface of the magnetic attraction ring is rotationally symmetrical with respect to a preset symmetry point; a first terminal and a second terminal are arranged in the magnetic attraction ring, and respectively have a first contact surface and a second contact surface visible from the outer end surface of the magnetic attraction ring; the outer end surface of the magnetic attraction ring is hollow, so that when the magnetic attraction ring is adsorbed with the annular magnetic adsorption structure of the corresponding connector, it will be adsorbed and constrained in multiple directions of the ring to accurately position the first contact surface and the second contact surface.

[0006] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a bone conduction speaker device, which includes the magnetic connector as described above.

[0007] The beneficial effects of the present application are as follows: different from the prior art, the magnetic attraction ring of the magnetic attraction connector in the present application is annular in design, so that when used in combination with the corresponding connector, it can be adsorbed and constrained from different directions along the direction of the "hollow" annular surface of the magnetic attraction ring, thereby reducing the situation where the "solid" surface is easily misaligned or deviated and cannot be accurately positioned during adsorption, so that the first contact surface and the second contact surface are accurately positioned by aligning the magnetic attraction ring to achieve matching connection with the corresponding connector, thereby improving the accuracy of docking with the corresponding connector; in addition, the outer end surface of the magnetic attraction ring is rotationally symmetrical with respect to the preset symmetry point, so that the magnetic attraction connector can restore or at least partially restore its original position after symmetrical rotation with the magnetic attraction ring. On the one hand, when assembling the magnetic attraction connector, the magnetic attraction ring can have at least two relative assembly positions relative to the first contact surface and the second contact surface, thereby facilitating assembly; on the other hand, when the magnetic attraction connector is applied to the power interface of an electronic device or a power adapter, the magnetic attraction connector can be docked with the corresponding interface at multiple rotation angles to achieve normal power supply to the electronic device, thereby facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0009] Figure 1 This is a structural diagram of an embodiment of the bone conduction speaker device of the present application;

[0010] Figure 2 This is an exploded view of the partial structure of an embodiment of the bone conduction speaker device of the present application;

[0011] Figure 3 This is an exploded view of the partial structure of an embodiment of the bone conduction speaker device of the present application;

[0012] Figure 4 This is a partial structural cross-sectional view of an embodiment of the bone conduction speaker device of the present application;

[0013] Figure 5 This is a schematic diagram of the structure of a battery assembly in one embodiment of the bone conduction speaker device of the present application;

[0014] Figure 6 This is a schematic diagram of the structure of a battery assembly in one embodiment of the bone conduction speaker device of the present application;

[0015] Figure 7This is a schematic diagram of the flexible circuit board wiring at the battery in one embodiment of the bone conduction speaker device of the present application;

[0016] Figure 8 This is an exploded view of the partial structure of an embodiment of the bone conduction speaker device of the present application;

[0017] Figure 9 This is a partial structural cross-sectional view of an embodiment of the bone conduction speaker device of the present application;

[0018] Figure 10 yes Figure 9 A partial enlarged view of part A;

[0019] Figure 11 This is a first top view of the magnetic connector in one embodiment of the bone conduction speaker device of the present application;

[0020] Figure 12 This is a second top view of the magnetic connector in one embodiment of the bone conduction speaker device of the present application;

[0021] Figure 13 This is a third top view of the magnetic connector in one embodiment of the bone conduction speaker device of the present application;

[0022] Figure 14 yes Figure 9 A partial enlarged view of part B;

[0023] Figure 15 This is a partial structural diagram of an embodiment of the bone conduction speaker device of the present application;

[0024] Figure 16 This is an exploded view of the partial structure of an embodiment of the bone conduction speaker device of the present application;

[0025] Figure 17 This is a partial structural cross-sectional view of an embodiment of the bone conduction speaker device of the present application;

[0026] Figure 18 yes Figure 17 A partial enlarged view of part C in the middle;

[0027] Figure 19 This is a partial structural diagram of an embodiment of the bone conduction speaker device of the present application;

[0028] Figure 20 This is an exploded view of the partial structure of an embodiment of the bone conduction speaker device of the present application;

[0029] Figure 21 This is a partial structural cross-sectional view of an embodiment of the bone conduction speaker device of the present application;

[0030] Figure 22 yes Figure 21 A partial enlarged view of part D in the middle;

[0031] Figure 23 This is a partial structural cross-sectional view of an embodiment of the bone conduction speaker device of the present application;

[0032] Figure 24 yes Figure 23 A partial enlarged view of part E in the middle;

[0033] Figure 25 1 is a schematic structural diagram of a speaker assembly of an embodiment of a bone conduction speaker device of the present application;

[0034] Figure 26 This is another structural schematic diagram of a speaker assembly of an embodiment of the bone conduction speaker device of the present application;

[0035] Figure 27 This is another structural diagram of a speaker assembly of an embodiment of the bone conduction speaker device of the present application;

[0036] Figure 28 1 is a partial structural diagram of a speaker assembly of an embodiment of the bone conduction speaker device of the present application;

[0037] Figure 29 is a partial cross-sectional view of a speaker assembly of an embodiment of the bone conduction speaker device of the present application;

[0038] Figure 30 yes Figure 29 A partial enlarged view of part F in the middle. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] See also Figures 1 to 30 , Figures 1 to 30The bone conduction speaker device of the present application is illustrated. The bone conduction speaker device in the present application can be a bone conduction-based headset, MP3 or other device with a speaker function. Specifically, the bone conduction speaker device may include: a circuit housing 10, an ear hook 20, a back hook 30 and a speaker assembly 40, as well as a control circuit 51, a battery 52, etc. Among them, the circuit housing 10 is used to accommodate the control circuit 51 or the battery 52, and the speaker assembly 40 includes a movement housing 41 and an earphone core 42. The movement housing 41 is connected to the ear hook 20 and is used to accommodate the earphone core 42. The number of the circuit housing 10, the speaker assembly 40 and the ear hook 20 can be two, corresponding to the left and right sides of the user respectively. The movement housing 41 and the circuit housing 10 are respectively arranged at both ends of the ear hook 20, and the back hook 30 is further arranged at the end of the circuit housing 10 away from the ear hook 20.

[0041] In one embodiment, a housing sheath 21 is injection-molded onto the earhook 20. Specifically, the earhook 20 includes a first elastic metal wire for supporting the shape of the earhook 20. An earhook sheath 22 is injection-molded around the first elastic metal wire. The earhook sheath 22 further forms a housing sheath 21 integrally formed with the earhook sheath 22 at the connection between the earhook 20 and the circuit housing 10. That is, the housing sheath 21 is located on the side of the earhook sheath 22 facing the circuit housing 10.

[0042] Similarly, a housing cover 31 is injection-molded onto the back hanger 30. Specifically, the back hanger 30 also includes a second elastic metal wire for supporting the shape of the back hanger 30, and a back hanger cover 32 injection-molded around the second elastic metal wire. The back hanger cover 32 further forms a housing cover 31 integrally formed with the back hanger cover 32 at the connection between the back hanger 30 and the circuit housing 10. That is, the housing cover 31 is located on the side of the back hanger cover 32 facing the circuit housing 10.

[0043] It should be noted that the shell cover 21 and the ear hook cover 22, the shell cover 31 and the back hook cover 32 can all be made of soft materials with a certain elasticity, such as soft silicone, rubber, etc., to provide a better touch for the user to wear.

[0044] Specifically, the circuit shell 10, the shell cover 21 and the shell cover 31 are formed separately, and the shape of the inner wall of the shell cover 21 matches the shape of at least part of the outer wall of the circuit shell 10 near the ear hook 20, and the shape of the inner wall of the shell cover 31 matches the shape of at least part of the outer wall of the circuit shell 10 near the back hanger 30. After the three are formed separately, the shell cover 21 is put on the outer periphery of the circuit shell 10 near the ear hook 20 from the side of the circuit shell 10 facing the ear hook 20, and the shell cover 31 is put on the outer periphery of the circuit shell 10 near the back hanger 30 from the side of the circuit shell 10 facing the back hanger 30, so that the circuit shell 10 can be covered by the shell cover 21 and the shell cover 31 together.

[0045] It should be pointed out that since the ambient temperature during the molding of the shell cover 21 and the shell cover 31 is relatively high, and the high temperature environment may cause certain damage to the control circuit 51 or the battery 52 contained in the circuit shell 10, the circuit shell 10 and the shell cover 21 and the shell cover 31 are molded separately during the molding stage and then assembled together, instead of directly injecting the shell cover 21 and the shell cover 31 on the periphery of the circuit shell 10. This can avoid the damage to the control circuit 51 or the battery 52 caused by high temperature during integral injection molding, thereby reducing the adverse effects on the control circuit 51 or the battery 52 during the molding stage.

[0046] In one embodiment, the circuit housing 10 includes a main side wall 11, an auxiliary side wall 12, and an end wall 13 that are connected to each other. The circuit housing 10 can be a flat housing, including a main side wall 11 with a larger area. When the user wears the bone conduction speaker device, the two opposing main side walls 11 are respectively a side wall that is used to rest against the head and a side wall opposite to the side wall and located away from the head. The auxiliary side walls 12 and the end wall 13 are both used to connect the two main side walls 11. Among them, the auxiliary side walls 12 are the two side walls that face the upper and lower sides of the user's head when the user wears the device; the end walls 13 are the opposite side walls of the circuit housing 10, and are respectively close to the ear hook 20 end and the back hook 30 end. When the user wears the device, they face the front and back sides of the user's head, respectively. The main side wall 11, the auxiliary side wall 12, and the end wall 13 are connected to each other to form the circuit housing 10.

[0047] Specifically, the housing cover 21 includes an open end 211, which is positioned from the circuit housing 10 toward the ear hook 20 and then sleeved onto the circuit housing 10. The open end 211 covers the end wall 13 of the circuit housing 10 facing the ear hook 20, as well as the portions of the primary side wall 11 and the secondary side wall 12 near the ear hook 20. The housing cover 31 includes an open end 311, which is positioned from the circuit housing 10 toward the back hook 30 and then sleeved onto the circuit housing 10. The open end 211 and the open end 311 are then butted against each other on the primary side wall 11 and the secondary side wall 12 of the circuit housing 10 to enclose the circuit housing 10.

[0048] In one application scenario, the shell cover 21 and the shell cover 31 do not completely cover the entire circuit shell 10. For example, an exposure hole can be opened at a position corresponding to a button or a position corresponding to a power interface to expose the corresponding structure for user convenience.

[0049] After the housing jacket 21 and the housing jacket 31 are sleeved on the periphery of the circuit housing 10 , they can be further fixed to the circuit housing 10 by certain means, thereby fixing the circuit housing 10 and the corresponding housing jacket together.

[0050] Specifically, in one embodiment, the housing jacket 21 and the housing jacket 31 are integrally formed with positioning protrusions 212 and 312 on their corresponding inner surfaces with respect to the main side wall 11 , and the outer surfaces of the main side wall 11 are correspondingly provided with positioning grooves 111 and 112 .

[0051] The positioning protrusion 212 is disposed on the inner sidewall near the open end 211. The positioning protrusion 212 can be an annular protrusion surrounding the inner sidewall of the housing jacket 21, or it can be a plurality of protrusions spaced apart on the inner sidewall of the housing jacket 21, and the specific configuration can be determined based on actual needs. In this embodiment, there are two positioning protrusions 212, each disposed on the inner sidewall of the housing jacket 21 corresponding to the two main sidewalls 11 of the circuit housing 10. Similarly, there are two positioning protrusions 312, each disposed on the inner sidewall of the housing jacket 31 corresponding to the two main sidewalls 11 of the circuit housing 10.

[0052] Specifically, after the shell cover 21 and the shell cover 31 are respectively sleeved on both sides of the circuit shell 10, the positioning protrusion 212 is further embedded in the positioning groove 111, and the positioning protrusion 312 is further embedded in the positioning groove 112, so that the open end 211 of the shell cover 21 and the open end 311 of the shell cover 31 are elastically abutted together, thereby covering the circuit shell 10.

[0053] Furthermore, in one embodiment, the outer sidewall 313 of the housing cover 31 covering the end wall 13 of the circuit housing 10 is tilted relative to the auxiliary sidewall 12. Specifically, when the user wears the device, the outer sidewall 313 of the housing cover 31 is tilted from the side closer to the upper side of the user's head to the side closer to the lower side of the user's head in a direction gradually away from the back strap 30.

[0054] The positioning protrusions 212 and 312 can be arranged in a strip shape along the open ends 211 and 311, respectively, and can be inclined relative to the auxiliary sidewall 12. Furthermore, the joint between the housing cover 21 and the housing cover 31 on the main sidewall 11 of the circuit housing 10 can also be inclined relative to the auxiliary sidewall 12. The inclination of the positioning protrusions 212 and 312, as well as the joint between the housing cover 21 and the housing cover 31 on the main sidewall 11 of the circuit housing 10, can be aligned with the inclination of the outer sidewall 313 of the housing cover 31 in the area covering the end wall 13 of the circuit housing 10, thereby providing a more uniform appearance for the bone conduction speaker device.

[0055] In one application scenario, the covering area of the circuit housing 10 by either the housing jacket 21 or the housing jacket 31 is not less than half the covering area of the other housing 10. For example, the covering area of the circuit housing 10 by the housing jacket 21 is not less than half the covering area of the circuit housing 10 by the housing jacket 31, or the covering area of the circuit housing 10 by the housing jacket 31 is not less than half the covering area of the circuit housing 10 by the housing jacket 21. The covering area of the circuit housing 10 by the housing jacket 21 and the covering area of the circuit housing 10 by the housing jacket 31, as well as the ratio between the two, can be set to other values as needed, for example, each accounting for half, and are not specifically limited here.

[0056] The circuit housing 10 and the rear hanger 30 may be integrally formed, or may be connected together by plugging, snapping, or the like.

[0057] In one embodiment, the rear hanger 30 further includes a connector end 33 disposed toward the circuit housing 10, and a housing jacket 31 is disposed over at least a portion of the connector end 33. Specifically, the connector end 33 may be injection molded onto the end of the second elastic metal wire, and the rear hanger jacket 32 may be further injection molded over the second elastic metal wire and a portion of the connector end 33. The housing jacket 31 is then integrally formed with the connector end 33, thereby allowing the housing jacket 31 to further surround the area of the connector end 33 not covered by the rear hanger jacket 32.

[0058] Furthermore, the circuit housing 10 is provided with a connector hole 14 facing the rear hanger 30, wherein the connector hole 14 can be set on the end wall 13 of the circuit housing 10 close to the rear hanger 30, and extended toward the rear hanger 30 on one side of the end wall 13 close to an auxiliary side wall 12.

[0059] The connector end 33 is at least partially inserted into the connector hole 14. Slots 331 are provided on opposite sides of the connector end 33, perpendicular to the insertion direction of the connector end 33 relative to the connector hole 14. The two slots 331 can be spaced apart and symmetrically arranged on either side of the connector end 33. Furthermore, the two slots 331 can both communicate with corresponding side walls of the connector end 33 in a direction perpendicular to the insertion direction.

[0060] Correspondingly, a through hole 151 is provided on the side wall 15 defining the socket 14, corresponding to the positions of the two slots 331. The side wall 15 of the socket 14 is arranged at the periphery of the socket 14 and faces the lower side of the user's head when worn.

[0061] The bone conduction speaker device further includes a fixing member 53, which includes two parallel pins 531 and a connecting portion 532 for connecting the pins 531. In this embodiment, the two pins 531 are arranged in parallel, and the connecting portion 532 can be perpendicularly connected to the same side of the two pins 531, thereby forming a U-shaped fixing member 53.

[0062] Furthermore, the pin 531 can be inserted into the slot 331 through the through hole from the outer wall of the side wall 15 of the socket 14, thereby blocking the connecting portion 532 outside the socket 14, thereby achieving the connection and fixation between the circuit housing 10 and the rear hanger 30.

[0063] Furthermore, in one embodiment, a through hole 161 is further provided on the side wall 16 that defines the connector 14 and is opposite the side wall 15, and is opposite the through hole 151. The pin 531 is further inserted into the through hole 161 through the slot 331. The side wall 16 may be the auxiliary side wall 12 of the circuit housing 10 that is adjacent to the connector 14. When the bone conduction speaker device is worn, the auxiliary side wall 12 faces the upper side of the user's head.

[0064] In this embodiment, the pin 531 is inserted into the slot 331 through the through hole 151, and further inserted into the through hole 161 through the slot 331. That is, the pin 531 can completely penetrate and connect the opposite side walls of the plug end 33 of the rear hanger 30 and the plug end 33 together, thereby making the connection between the circuit housing 10 and the rear hanger 30 more stable.

[0065] Furthermore, in one embodiment, the connector end 33 is further divided into a first connector section 332 and a second connector section 333 along the insertion direction of the connector end relative to the connector hole 14. In a cross-sectional direction perpendicular to the insertion direction of the connector end 33 relative to the connector hole 14, the cross-section of the first connector section 332 is larger than the cross-section of the second connector section 333.

[0066] Specifically, the rear hanging sheath 32 can be injection molded onto the first connecting section 332 of the connector end, and the housing sheath 31 can be integrally injection molded at the junction of the first connecting section 332 and the second connecting section 333. Furthermore, a slot 331 is provided on the second connecting section 333, and the second connecting section 333 is inserted into the connector hole 14, while the connector end 33 is exposed outside the connector hole 14.

[0067] Furthermore, in one embodiment, the first connector section 332 is provided with a first wiring groove 3321 arranged along the insertion direction of the connector end 33 relative to the connector hole 14. A second wiring groove 3331 is provided on the outer end surface of the second connector section 333, distal from the first connector section 332, extending perpendicularly to the insertion direction and penetrating at least one outer side surface. Specifically, the first wiring groove 3321 is provided on a side of the first connector section 332 that is adjacent to the auxiliary sidewall 12 defining the connector hole 14 and extends through both end surfaces of the first connector section 332 along the insertion direction of the connector end 33 relative to the connector hole 14. The second wiring groove 3331 extends through both outer side surfaces of the second connector section 333, perpendicular to the extension direction of the second wiring groove 3331.

[0068] In addition, a wiring groove 162 is provided on the inner side wall of the connector 14 , one end of which is connected to the first wiring groove 3321 and the other end of which is connected to the second wiring groove 3331 . The wiring groove 162 is specifically formed by a depression in the inner wall surface of the side wall 16 .

[0069] Furthermore, the circuit housing 10 includes an inner partition wall 17 disposed within the housing to form an accommodating cavity 18 spaced apart from the connector 14. Specifically, the primary sidewall 11, the secondary sidewall 12, and the end wall 13 of the circuit housing 10 collectively form an accommodating space, and the inner partition wall 17 divides the accommodating space into the accommodating cavity 18 and the connector 14. A wiring hole 171 is further provided in the inner partition wall 17 to connect the connector 14 and the accommodating cavity 18.

[0070] The bone conduction speaker device is further provided with a rear-mounted wire 34, which passes through the rear mount 30 and is connected at both ends to the control circuit 51 and the battery 52, respectively. Specifically, the rear-mounted wire 34 passes from the rear mount 30 through the first wiring groove 3321, the wiring groove 162, and the second wiring groove 3331, and then through the wiring hole 171 into the accommodating cavity 18 to connect to the control circuit 51 or the battery 52.

[0071] In one embodiment, the circuit housing 10 includes a first circuit housing 10a and a second circuit housing 10b. The bone conduction speaker device further includes a flexible printed circuit board 54, which can be housed together with a battery 52 within the housing cavity 18 of the first circuit housing 10a. The flexible printed circuit board 54 can be a flexible printed circuit (FPC). The battery 52 has a positive terminal and a negative terminal.

[0072] Specifically, the flexible circuit board 54 includes a first plate 541 and a second plate 542, one end of the first plate 541 is fixed to the battery 52, and the other end is connected to the second plate 542. The flexible circuit board 54 can be a whole, and the first plate 541 and the second plate 542 are two areas of the whole. Among them, the second plate 542 can be provided with a soldering pad and a soft trace connecting the soldering pad, and the first plate 541 can be provided with only a soft trace for connecting the corresponding soldering pad on the second plate 542 to the battery 52. Since only a soft lead is provided on the first plate 541, the first plate 541 can be bent, such as Figure 6 As shown, the position of the flexible circuit board 54 can be adjusted according to needs.

[0073] The second plate 542 is provided with a plurality of solder pads spaced apart from each other, including two solder pads 543 and a plurality of solder pads 544. Furthermore, the first plate 541 and the second plate 542 are provided with two continuous flexible leads 545, and the two solder pads 543 are electrically connected to the positive and negative terminals of the battery 52, respectively, via the two flexible leads 545.

[0074] In addition, multiple solder pads 544 can be divided into at least two groups, and the number of solder pads 544 in each group can be set according to needs. For example, the number of solder pads 544 in each group can be two, and the two solder pads 544 are electrically connected to each other by soft leads 546 respectively arranged on the second plate 542. The two solder pads 544 in each group can be connected to functional elements respectively through wires, and then the two corresponding functional elements are connected together through the soft leads 546.

[0075] In the above method, on the one hand, the soldering pads used for circuit transfer are all arranged on the second plate 542 of the flexible circuit board 54, and are connected to the battery 52 through the first plate 541 of the flexible circuit board 54, so that the first plate 541 can be bent according to space requirements to place the second plate 542, thereby optimizing the space utilization of the accommodating cavity 18 of the first circuit shell 10a and improving space utilization; on the other hand, the two soldering pads 543 can be directly connected to the positive and negative terminals of the battery 52 through the soft leads 545 on the flexible circuit board 54, without the need to set additional soldering pads to lead out the positive and negative poles of the battery 52, thereby reducing the number of soldering pads and simplifying the structure and process.

[0076] In one embodiment, the first plate 541 is further folded so that the second plate 542 is attached to the side surface of the battery 52 , so that the first plate 541 and the battery 52 are stacked, thereby greatly reducing the space occupied by the battery 52 and the flexible circuit board 54 .

[0077] Specifically, the battery 52 may include a battery cell 521, which includes a main body area 5211 and a sealing area 5212. The main body area 5211 and the sealing area 5212 are arranged flatly, and the thickness of the main body area 5211 is greater than the thickness of the sealing area 5212, so that the side surface of the sealing area 5212 and the side surface of the main body area 5211 are arranged in a stepped manner.

[0078] Specifically, the side surfaces of the sealing area 5212 and the main body area 5211 in the thickness direction of the battery cell 521 are arranged in a stepped manner, so that the second plate 542 can utilize the space formed by the main body area 5211 and the sealing area 5212 of the battery cell 521, without the need to set up an additional separate space for placing the flexible circuit board 54, thereby further improving space utilization.

[0079] In one embodiment, the battery 52 further includes a rigid circuit board 522, which is disposed on the side surface of the sealing area 5212 of the battery cell 521. Specifically, the positive and negative terminals are disposed on the rigid circuit board 522, and a protection circuit (not shown) is further disposed on the rigid circuit board 522 to protect the battery 52 from overload.

[0080] In this embodiment, the end of the first plate 541 away from the second plate 542 is affixed to the rigid circuit board 522, thereby connecting the two flexible leads on the first plate 541 to the positive and negative terminals on the rigid circuit board 522. Specifically, the first plate 541 and the rigid circuit board 522 can be directly pressed together during the manufacturing stage.

[0081] Furthermore, the shapes of the first plate 541 and the second plate 542 can be configured according to actual circumstances. In this embodiment, the shape of the first plate 541 matches the shape of the sealing area 5212 of the battery cell 521, and both can be elongated rectangles. The second plate 542 can also be rectangular and disposed at one end of the length of the first plate 541, perpendicular to the first plate 541 along the length. Furthermore, the first plate 541 can be connected to the middle region of the second plate 542 along the length, thereby forming a T-shaped arrangement of the first and second plates 541, 542.

[0082] Furthermore, on the second board 542 , the pads 543 and the pads 544 may be arranged in various ways. For example, all the pads may be arranged at intervals along a straight line, or may be arranged at intervals in other shapes.

[0083] In this embodiment, two solder pads 543 are spaced apart in the middle area of the second board 542 along the length direction of the second board 542, and multiple solder pads 544 are further distributed on both sides of the two solder pads 543 along the length direction of the second board 542, and the solder pads 544 in each group are adjacent to each other.

[0084] In this embodiment, the pads 544 within each group are spaced apart along the width of the second plate 542 and staggered along the length of the second plate 542, thereby allowing the pads 544 within each group to be arranged in a stepped pattern. This prevents the formation of flush spacing between two adjacent groups of pads 544, thereby evenly distributing the strength of the second plate 542 and reducing the occurrence of bending between adjacent groups of pads 544, thereby lowering the probability of the second plate 542 breaking due to bending, thereby protecting the second plate 542. Furthermore, the distance between the pads is increased, facilitating soldering and reducing the occurrence of short circuits between different pads.

[0085] The present application also provides a battery assembly. In one embodiment, the battery assembly includes the battery 52 described in the above embodiment and a flexible printed circuit board 54. The battery assembly in this embodiment can be used in devices such as headphones and MP3 players that require circuit switching at the battery 52, such as the bone conduction speaker described in this application.

[0086] Furthermore, in the embodiment of the bone conduction speaker device of the present application, the rear hook 30 is connected to one end of the first circuit housing 10a and is provided with a plurality of rear hook wires 34; the ear hook 20 is connected to the other end of the first circuit housing 10a and is provided with a plurality of ear hook wires 23.

[0087] Among them, each group of solder pads 544 includes two solder pads 544, and the ear hook wire 23 and the corresponding rear hanging wire 34 are respectively electrically connected to the two solder pads 544 in the same group of solder pads 544, and then the functional elements connected to the rear hanging wire 34 and the functional elements connected to the ear hook wire 23 are connected together by connecting the soft lead 546 of the two solder pads 544 in each group.

[0088] In one embodiment, the movement housing 41 further accommodates auxiliary function modules such as a key switch 431 (not shown). In addition, the control circuit 51 is accommodated in the second circuit housing 10b, and there are four groups of solder pads 544 on the second board 542.

[0089] The earhook wire 23 includes two audio signal wires 231, namely a first earhook wire 2311 and a second earhook wire 2312 connected to the earphone core 42. The back-hook wire 34 includes a first back-hook wire 341 and a second back-hook wire 342 connected to the control circuit 51 and used to transmit audio signals to the earphone core 42. Furthermore, the first earhook wire 2311 and the first back-hook wire 341, and the second earhook wire 2312 and the second back-hook wire 342 are respectively connected to different solder pads in different groups of two groups of solder pads 544. Specifically, the first earhook wire 2311 and the first back-hook wire 341 are respectively connected to two solder pads 544 in the same group of solder pads 544, and the second earhook wire 2312 and the second back-hook wire 342 are respectively connected to two solder pads 544 in another group of solder pads 544, thereby electrically connecting the earphone core 42 and the control circuit 51 to achieve audio signal transmission.

[0090] In addition, the earhook wire 23 also includes at least two auxiliary signal wires 232, for example, a third earhook wire 2321 and a fourth earhook wire 2322 connected to the key switch 431. Correspondingly, the back-hook wire 34 also includes a third back-hook wire 343 and a fourth back-hook wire 344 connected to the control circuit 51 for transmitting key signals to the key switch 431. Furthermore, the third earhook wire 2321 and the third back-hook wire 343, and the fourth earhook wire 2322 and the fourth back-hook wire 344 are respectively connected to different solder pads 544 in different groups of the two groups of solder pads 544, wherein these two groups of solder pads 544 are different from the two groups of solder pads 544 for transmitting audio signals to the earphone core 42. Furthermore, the third ear-hook wire 2321 and the third rear-hook wire 343 are respectively connected to two solder pads 544 in the same group of solder pads 544, and the fourth ear-hook wire 2322 and the fourth rear-hook wire 344 are respectively connected to two solder pads 544 in another group of solder pads 544, thereby electrically connecting the key switch 431 and the control circuit 51 together to realize the transmission of key signals.

[0091] Furthermore, the rear-hanging wire 34 also includes a fifth rear-hanging wire 345 and a sixth rear-hanging wire 346 connected to the control circuit 51 and used to supply power to the control circuit 51. The fifth rear-hanging wire 345 and the sixth rear-hanging wire 346 are respectively connected to the two pads 543, thereby connecting the battery 52 and the control circuit 51 together.

[0092] In one embodiment, the bone conduction speaker device also includes a magnetic connector 55, which can be used as a power interface to match the power interface of a charger to charge the bone conduction speaker device. Specifically, when charging the bone conduction speaker device, the magnetic connector 55 and the corresponding connector of the charger form a system. The two components are structurally compatible, allowing them to attach together and establish an electrical connection to charge the bone conduction speaker device. In this embodiment, the magnetic connector 55 includes a magnetic ring 551, an insulating base 552, and a first terminal 553 and a second terminal 554.

[0093] Among them, the magnetic adsorption ring 551 can be a magnet, and the magnetic polarities of the two opposite ends are different. Correspondingly, the corresponding connector of the charger has a magnetic adsorption structure corresponding to the magnetic adsorption ring 551. The magnetic adsorption structure can be made of magnetic materials, such as iron, etc. Regardless of the magnetic polarity of the outer end face of the magnetic adsorption ring 551, the two can be adsorbed together; the magnetic adsorption structure can also be a magnet. In this case, the two can only be adsorbed when the magnetism of the outer end face of the magnetic adsorption structure is opposite to the magnetic polarity of the outer end face of the magnetic adsorption ring 551. Furthermore, the magnetic adsorption connector 55 and the corresponding connector can be adsorbed to each other in a preset relative position relationship through the magnetic adsorption effect, so that the corresponding terminals of the two can be docked together to establish an electrical connection.

[0094] Specifically, the outer end surface of the magnetic attraction ring 551 can be annular in shape, and is attracted to the magnetic attraction structure of the corresponding connector through this annular end surface. It should be noted that due to the "hollow" design of the annular ring, the magnetic attraction ring 551 is attracted and constrained in multiple directions of the annular ring when adsorbing to the annular magnetic attraction structure of the corresponding connector, thereby enabling the magnetic attraction ring 551 to accurately combine with the corresponding magnetic attraction structure.

[0095] The insulating base 552 is at least partially inserted into the magnetic attraction ring 551 to secure the magnetic attraction ring 551. The insulating base 552 is provided with at least two receiving holes 5521. The at least two receiving holes 5521 extend in the same direction as the height of the insulating base 552 and penetrate at least the outer end surface of the insulating base 552. The insulating base 552 can be made of an insulating material such as PC or PVC.

[0096] Furthermore, the first terminal 553 and the second terminal 554 are each arranged in a columnar shape, with the same number as the number of the receiving holes 5521 on the insulating base 552, so that they can be inserted into their respective receiving holes 5521, and the corresponding end surfaces are exposed at one end of the top surface of the insulating base 552 through the receiving holes 5521, so as to be visible from the top surface of the insulating base 552 and can be flush with the top surface of the insulating base 552, forming a first contact surface 5531 and a second contact surface 5541. The first terminal 553 and the second terminal 554 correspond to the positive and negative terminals of a power supply, respectively, and are used to power the electronic device by connecting to the positive and negative terminals of the power supply. Correspondingly, the first contact surface 5531 and the second contact surface 5541 can achieve electrical connection with the corresponding connector through contact.

[0097] In the above method, when the magnetic suction connector 55 is used in combination with the corresponding connector, it can be adsorbed and constrained from different directions along the direction of the "hollow" annular surface of the magnetic adsorption ring 551, thereby reducing the situation where the "solid" surface is easily misaligned or deviated during adsorption and cannot be accurately positioned. The first contact surface 5531 and the second contact surface 5541 are accurately positioned by aligning the magnetic adsorption ring 551 to achieve a matching connection with the corresponding connector, thereby improving the accuracy of docking with the corresponding connector.

[0098] In one embodiment, the insulating base 552 includes a support portion 5522 and an insertion portion 5523. Specifically, the support portion 5522 and the insertion portion 5523 are arranged along the extension direction of the receiving hole 5521. The cross-section of the support portion 5522 is larger than the cross-section of the insertion portion 5523, thereby forming a support platform 55221 at the connection between the two.

[0099] The shape of the outer wall near the end of the insertion portion 5523 matches the shape of the inner wall of the magnetic attraction ring 551, so that the insertion portion 5523 can be inserted into the magnetic attraction ring 551 and fix the magnetic attraction ring 551. The two ends of the accommodating hole 5521 of the insulating base 552 respectively penetrate the end surfaces of the insertion portion 5523 and the support portion 5522 away from each other, so that the first terminal 553 and the second terminal 554 penetrate the entire insulating base 552 and expose the first contact surface 5531 and the second contact surface 5541 on the outer end surface of the insertion portion 5523 away from the support portion 5522. Furthermore, the first terminal 553 and the second terminal 554 can also extend out from the outer end surface of the support portion 5522 away from the insertion portion 5523 to further connect to the internal circuit.

[0100] Specifically, the insertion portion 5523 can be inserted into the magnetic attraction ring 551 from the end away from the support portion 5522, so that the end of the magnetic attraction ring 551 facing away from the outer end surface is supported on the support table 55221. The dimensions of the outer surface of the magnetic attraction ring 551 can be consistent with the dimensions of the outer surface of the support portion 5522, thereby making the structure of the magnetic joint more unified.

[0101] Furthermore, in one embodiment, the magnetic connector 55 further includes a shell 555, which can be mounted on the outer periphery of the insulating base 552 and the outer side of the magnetic adsorption ring 551, so that the entire magnetic connector 55 becomes a whole, thereby facilitating the further assembly of the magnetic connector 55 on the power interface of the bone conduction speaker device.

[0102] The shell 555 may be made of a metal material that is not attracted by a magnetic field, such as copper, aluminum, aluminum alloy, or a plastic material, which is not specifically limited here.

[0103] In this embodiment, metal is used as the shell 555 of the magnetic connector 55, so that it can be made thin while meeting the strength requirements to reduce space occupation.

[0104] Specifically, the shell 555 includes a cylinder 5551 and a flange 5552 provided at one end of the cylinder 5551 and protruding toward the inside of the cylinder 5551, so that one end of the shell 555 where the flange 5552 is provided is partially open and the other end is fully open. Among them, the shape of the inner surface of the cylinder 5551 matches the shape of the outer surface of the magnetic attraction ring 551 and the support part 5522 of the insulating base 552, and the flange 5552 at the partially open end can cover the magnetic attraction ring 551 and expose the first contact surface 5531 and the second contact surface 5541 of the first terminal 553 and the second terminal 554, so that the shell 555 can be mounted on the outer periphery of the insulating base 552, the first terminal 553, the second terminal 554 and the magnetic attraction ring 551 through the completely open end, and the flange 5552 covers the outer periphery of the end of the magnetic attraction ring 551 away from the support part 5522, and exposes the first contact surface 5531 and the second contact surface 5541 through the partially open end to further be electrically connected with the corresponding connector.

[0105] In an application scenario, the insertion portion 5523 of the insulating base 552 is protruded away from the outer end surface of the support portion 5522 relative to the end of the magnetic adsorption ring 551 away from the support portion 5522. At this time, the shape of the partially open end formed by the flange 5552 can match the shape of the outer periphery of the insertion portion 5523, so that the end of the insertion portion 5523 away from the support portion 5522 can pass through the partially open end of the shell 555 and extend to the outside of the shell 555.

[0106] In another application scenario, the insertion portion 5523 of the insulating base 552 is recessed relative to the top surface of the flange 5552 away from the outer end surface of the support portion 5522 .

[0107] It should be noted that the magnetic connector 55 in this embodiment can be used in the power interface of an electronic device or a charger, thereby cooperating with the corresponding charger power interface or electronic device power interface to power the electronic device. In the above method, by protruding or recessing the top surface of the insulating base 552 relative to the top surface of the flange 5552, the magnetic connector 55 can protrude into the corresponding connector, thereby forming a certain plug-in fit between the two, making the connection between the two more stable.

[0108] Furthermore, in one embodiment, the outer wall of the support portion 5522 and the inner wall of the cylinder 5551 may be respectively provided with a snap-fit structure that cooperates with each other. Through the snap-fit structure, the shell 555 is more securely mounted on the insulating base 552 and the magnetic adsorption ring 551, thereby making the structure of the magnetic suction connector 55 more stable.

[0109] Specifically, in an application scenario, a through groove 55511 is provided on each of the two opposite outer surfaces of the outer peripheral wall of the cylinder 5551. Correspondingly, a clip 55222 is provided at the corresponding position of the support part 5522 and the two through grooves 55511. When assembling the magnetic connector 55, the shell 555 can be sleeved on the outer periphery of the insulating base 552, and the hook on the support part 5522 can be further clamped on the side wall of the corresponding through groove 55511, so as to fix the shell 555 on the outer periphery of the outer peripheral wall of the support part 5522.

[0110] It should be noted that the specific shape of the magnetic attraction ring 551 in the above embodiments can be set according to different requirements.

[0111] In one embodiment, the outer end surface of the magnetic attraction ring 551 may be rotationally symmetrical relative to a preset symmetry point. When the magnetic attraction ring 551 rotates symmetrically, the first contact surface 5531 and the second contact surface 5541 rotate with the magnetic attraction ring 551, and the first contact surface 5531 and the second contact surface 5541 before rotation at least partially overlap with the first contact surface 5531 and the second contact surface 5541 after rotation. In other words, the surface formed by the first contact surface 5531 and the second contact surface 5541 may also be rotationally symmetrical, or close to rotationally symmetrical, relative to a preset symmetry point. Among them, the shape of the outer end surface of the magnetic attraction ring 551 and the angle of rotational symmetry, etc., can be determined according to the arrangement of the first contact surface 5531 and the second contact surface 5541.

[0112] Specifically, the outer end surface of the magnetic adsorption ring 551 can be set to a circular ring, an elliptical ring, a rectangular ring, etc. as needed, as long as it can be consistent with the arrangement of the first contact surface 5531 and the second contact surface 5541 so that the first contact surface 5531 and the second contact surface 5541 before symmetrical rotation can partially overlap with the second contact surface 5541 after symmetrical rotation.

[0113] In the above manner, since the outer end face of the magnetic attraction ring 551 is rotationally symmetrical with respect to a preset symmetry point, the magnetic attraction ring 551 can be restored to its position before the symmetrical rotation after the symmetrical rotation. On the one hand, when assembling the magnetic connector 55, the magnetic attraction ring 551 can have at least two relative assembly positions relative to the first contact surface 5531 and the second contact surface 5541, thereby facilitating assembly; on the other hand, when the magnetic connector 55 is applied to a power interface, the magnetic connector 55 can be docked with the corresponding interface at multiple rotation angles to achieve normal power supply to the electronic device, thereby facilitating use.

[0114] Specifically, if Figure 10 In one embodiment, the magnetic attraction ring 551 can be a circular ring design centered on the symmetry point, and the first contact surface 5531 and the second contact surface 5541 are respectively circular or circular ring designs that are concentrically arranged with the magnetic attraction ring 551 and nested with each other.

[0115] In this way, when the magnetic attraction ring 551 is symmetrically rotated at any angle about the center of the circle, the first contact surface 5531 and the second contact surface 5541 before the rotation can overlap with the first contact surface 5531 and the second contact surface 5541 after the rotation. Therefore, during assembly, the magnetic attraction ring 551 only needs to be concentrically sleeved with the first contact surface 5531 and the second contact surface 5541 on the periphery of the insertion portion 5523 of the insulating base 552, without the need to compare with other positions. At the same time, when the magnetic attraction connector 55 is docked with the corresponding connector, as long as the magnetic attraction ring 551 is concentrically aligned with the magnetic attraction structure of the corresponding connector, the first contact surface 5531 and the second contact surface 5541 can be connected to the positive terminal and the negative terminal of the corresponding interface, without further calibration, thereby facilitating user use.

[0116] In one embodiment, if Figure 11 The magnetic attraction ring 551 is rotationally symmetrical 180 degrees relative to the symmetry point, that is, when the magnetic attraction ring 551 rotates 180 degrees relative to the symmetry point, the first contact surface 5531 and the second contact surface 5541 before rotation and the first contact surface 5531 and the second contact surface 5541 after rotation at least partially overlap.

[0117] The magnetic attraction ring 551 has different sizes in the first direction and the second direction passing through the symmetrical point and perpendicular to each other. For example, the outer end face of the magnetic attraction ring 551 can be an elliptical ring, a rectangular ring, etc., which is not specifically limited here.

[0118] In one application scenario, the dimension in the first direction is greater than the dimension in the second direction. The number of first contact surfaces 5531 can be one, and it is set at a symmetrical point of the magnetic attraction ring 551. The number of second contact surfaces 5541 can be two, so that when the magnetic attraction ring 551 rotates relative to the symmetrical point, the two second contact surfaces 5541 rotate relative to the first contact surface 5531, and when the magnetic attraction ring 551 rotates 180 degrees, the two second contact surfaces 5541 swap positions.

[0119] Furthermore, the two second contact surfaces 5541 can be arranged along the first direction on either side of a symmetrical point, and when the magnetic attraction ring 551 rotates 180 degrees, either of the two second contact surfaces 5541 before rotation at least partially overlaps with the other second contact surface 5541 after rotation. Because both contact surfaces are arranged along the first direction, the two second contact surfaces 5541 are located on the same straight line before and after rotation and swap positions, i.e., one second contact surface 5541 after rotation is located on the other second contact surface 5541 before rotation. Therefore, when either of the two second contact surfaces 5541 before rotation at least partially overlaps with the other second contact surface 5541 after rotation, both second contact surfaces 5541 at least partially overlap before and after rotation.

[0120] Specifically, the first contact surface 5531 and the two second contact surfaces 5541 can be 180 degrees rotationally symmetrical relative to the symmetry point, that is, the first contact surface 5531 and the second contact surface 5541 are 180 degrees rotationally symmetrical relative to the center point of the first contact surface 5531, so that the first contact surface 5531 and the second contact surface 5541 before the symmetrical rotation and the first contact surface 5531 and the second contact surface 5541 after the symmetrical rotation can completely overlap, but cannot completely overlap when rotated to other degrees.

[0121] The shape of the first contact surface 5531 and the shape of the second contact surface 5541 can be the same or different, but the shapes of the two second contact surfaces 5541 must be the same. For example, the first contact surface 5531 and the second contact surface 5541 can both be circular surfaces, or other surfaces that can completely overlap after rotating 180 degrees around the center point of the first contact surface 5531.

[0122] In the above manner, since the magnetic attraction ring 551 rotates 180° relative to the symmetry point, the magnetic attraction ring 551 faces two opposite directions. At the same time, the first contact surface 5531 and the second contact surface 5541 before the rotation 180° at least partially overlap with the first contact surface 5531 and the second contact surface 5541 after the rotation. Therefore, when the magnetic attraction connector 55 is assembled, the magnetic attraction ring 551 can be sleeved on the periphery of the insertion portion 5523 of the insulating base 552 provided with the first terminal 553 and the second terminal 554 in two opposite directions, thereby facilitating assembly; in addition, when the magnetic attraction connector 55 is docked with the corresponding connector, docking can also be achieved in two opposite directions, thereby facilitating user use.

[0123] In one embodiment, the magnetic attraction ring 551 is divided into at least two ring segments 5511 along the circumferential direction, wherein outer end surfaces of adjacent ring segments 5511 have different magnetic polarities.

[0124] The division of the ring segments 5511 can be performed according to certain rules. For example, when the outer end surface of the magnetic attraction ring 551 is annular, the magnetic attraction ring 551 can be divided equally along the radial direction of the annular shape, for example, into four equal quarter-circular ring segments 5511 of the same shape and symmetrically distributed. Alternatively, the ring segments 5511 can be randomly divided into multiple ring segments 5511 of different shapes, which is not specifically limited here.

[0125] Specifically, during actual use, the first contact surface 5531 and the second contact surface 5541 need to contact the exposed surfaces of the corresponding terminals of the corresponding connector to establish an electrical connection between the magnetic connector 55 and the corresponding connector, thereby supplying power to the bone conduction speaker device. However, if the first contact surface 5531 and the second contact surface 5541 are not properly aligned with the exposed surfaces of the terminals in the corresponding connector, a proper electrical connection cannot be established between the magnetic connector 55 and the corresponding connector, and power cannot be supplied to the bone conduction speaker device.

[0126] In this embodiment, the magnetic polarity of the outer end surface of each ring segment 5511 can be set according to the connection method between the first contact surface 5531 and the second contact surface 5541 and the terminal in the corresponding connector, so that when the first contact surface 5531 and the second contact surface 5541 are correctly connected to the terminal of the corresponding connector, the magnetic polarity of the outer end surface of the magnetic structure of the corresponding connector is consistent with the magnetic polarity of the outer end surface of the corresponding ring segment 5511 of the magnetic connector 55, and the two connectors are connected together due to the attraction between opposite poles, thereby establishing a correct connection relationship between the two connectors; and when the first contact surface 5531 and the second contact surface 5541 are incorrectly connected to the terminal of the corresponding connector, the magnetic polarity of the outer end surface of the magnetic structure of the corresponding connector is the same as the magnetic polarity of the outer end surface of the corresponding ring segment 5511 of the magnetic connector 55, so that they cannot be connected together due to the repulsion between like poles, thereby avoiding the establishment of an erroneous connection that causes the magnetic connector 55 to fail to work normally, improving the accuracy and efficiency of the connection, and bringing convenience to users.

[0127] In one embodiment, the magnetic attraction ring 551 may be divided into two ring segments 5511 along the circumferential direction.

[0128] Specifically, the shape of the outer end surface of the magnetic adsorption ring 551 can be a regularly symmetrical ring such as an elliptical ring, a circular ring, a rectangular ring, etc. as described in the above embodiments, so that it can be divided into two ring segments 5511 along the symmetry axis of the regular ring; or it can also be an irregular ring, and correspondingly divided into two asymmetric ring segments 5511. The specific setting can be made according to needs and is not specifically limited here.

[0129] In an application scenario, such as Figure 12 , the number of the first contact surface 5531 and the second contact surface 5541 are both one, and are arranged side by side and spaced apart, corresponding to the positive terminal and the negative terminal of the electronic device respectively. Among them, the magnetic attraction ring 551 can be 180 degrees rotationally symmetrical relative to the symmetry point, and the dimensions of the magnetic attraction ring 551 in the first direction and the second direction passing through the symmetry point and perpendicular to each other are different. Specifically, the dimension of the magnetic attraction ring 551 in the first direction is larger than the dimension in the second direction, and the shape of its outer end surface can be an elliptical ring. Furthermore, the elliptical ring can be divided into two ring segments 5511 arranged side by side and spaced apart along its symmetry axis in the first direction or the second direction, wherein the magnetic polarity of the outer end surface of one ring segment 5511 is the N pole, and the magnetic polarity of the outer end surface of the other ring segment 5511 is the S pole. Further, the first contact surface 5531 and the second contact surface 5541 of the magnetic attraction connector 55 are also arranged side by side and spaced apart, and are 180 degrees rotationally symmetrical in shape with the symmetry point of the magnetic attraction ring 551 as the symmetry point.

[0130] Correspondingly, the shape and number of the magnetic attraction structure of the corresponding connector are consistent with the magnetic attraction ring 551 of the magnetic attraction connector 55, while the magnetic polarity of the outer end surface is opposite.

[0131] At this time, when the first contact surface 5531 and the second contact surface 5541 are correctly docked with the corresponding terminals in the corresponding connector, and when the two ring segments 5511 of the magnetic adsorption ring 551 are docked with the magnetic adsorption structure in the corresponding connector by means of opposite attraction, and when the first contact surface 5531 and the second contact surface 5541 are incorrectly docked with the corresponding terminals in the corresponding connector, the ring segment 5511 with the N pole of the outer end face of the magnetic adsorption connector 55 corresponds to the N pole in the magnetic adsorption structure, and the ring segment 5511 with the S pole of the outer end face corresponds to the S pole in the magnetic adsorption structure, resulting in like-pole repulsion and inability to dock together, thereby avoiding incorrect connection and facilitating user use.

[0132] The present application also provides a magnetic connector 55. This magnetic structure includes the specific structure of the magnetic connector 55 in the bone conduction speaker device described above. This magnetic connector 55 can be used as a power port of an electronic device, including the bone conduction speaker device of the present application, or a power port of a charger. It is used to coordinate the power port of the electronic device with the power port of the charger through magnetic attraction and electrically connect the corresponding connectors used therewith to power the electronic device. The relevant structure and the technical effects that can be produced can be found in the above-mentioned embodiments and will not be repeated here.

[0133] The present application also provides a magnetic connector 55 assembly, comprising two magnetic connectors 55 from the aforementioned magnetic connector 55 embodiments, wherein the number and shape of the ring segments 5511 on the two magnetic connectors 55 correspond to each other, and the outer end surfaces of the corresponding ring segments 5511 have opposite magnetic polarities, so that when the corresponding ring segments 5511 are attracted to each other, the first contact surfaces 5531 and the second contact surfaces 5541 of the two magnetic connectors 55 respectively contact each other. For other relevant details, please refer to the aforementioned embodiments and will not be repeated here.

[0134] It should be pointed out that, through the above method, the magnetic polarity of the outer end surface of each ring segment 5511 of the two magnetic connectors 55 can be set so that when the first contact surface 5531 and the second contact surface 5541 of the two magnetic connectors 55 are in contact with each other, the magnetic polarity of the outer end surface of the corresponding ring segment 5511 is consistent and opposite, so that the two magnetic connectors 55 are docked together due to the attraction of opposite poles, thereby establishing a correct connection relationship between the two; and when the first contact surface 5531 and the second contact surface 5541 of one magnetic connector 55 correspond to the second contact surface 5541 and the first contact surface 5531 of the other magnetic connector 55, respectively, the magnetic polarity of the outer end surface of the corresponding ring segment 5511 is the same, so that they cannot be docked together due to the repulsion of like poles, thereby reducing the probability of establishing an incorrect connection between the two magnetic connectors 55, thereby improving the accuracy and efficiency of docking.

[0135] Furthermore, in the embodiment of the bone conduction speaker device in the present application, the magnetic connector 55 can be disposed in a circuit housing 10 , specifically, in a circuit housing 10 for accommodating the control circuit 51 .

[0136] In one application scenario, the two main side walls 11 of the circuit housing 10 are spaced apart from each other, and two retaining walls 19 spaced apart from each other are formed on the inner surface of at least one main side wall 11. The two retaining walls 19 can be arranged parallel to the end wall 13 of the circuit housing 10. The two main side walls 11 and the two retaining walls 19 enclose a receiving space, which can be arranged near one side of the auxiliary side wall 12, and the magnetic connector 55 is arranged in the receiving space.

[0137] The two main side walls 11 are further provided with assembly holes 113 , and the bone conduction speaker further includes two fixing members 56 , which can be respectively inserted into the assembly holes 113 of the two main side walls 11 and support the magnetic connector 55 from opposite sides of the magnetic connector 55 .

[0138] The number of the assembly holes 113 may be the same as the number of the fixing members 56. Specifically, the fixing members 56 may be screws, which pass through the assembly holes 113 from the outside of the main side wall 11 so that one end of the screw abuts against the outer wall of the magnetic connector 55 and the other end is fixed in the assembly hole 113.

[0139] Furthermore, the central axes of the two fixing members 56 are parallel to each other and spaced apart. Therefore, the central axes of the two fixing members 56 do not overlap, thereby enabling the magnetic connector 55 to be more firmly fixed in the circuit housing 10 .

[0140] In an application scenario, an assembly hole 113 is respectively provided on the two main side walls 11, and the magnetic connector 55 is rotationally symmetrical 180 degrees around the insertion direction of the magnetic connector 55 relative to the accommodating space enclosed by the two main side walls 11 and the two retaining walls 19, and two assembly holes 55512 capable of receiving the fixing part 56 are respectively provided on the opposite sides of the magnetic connector 55, wherein after the magnetic connector 55 is symmetrically rotated and inserted into the accommodating space, one of the two assembly holes 55512 on each side of the magnetic connector 55 is aligned with the assembly hole 113.

[0141] Specifically, the assembly hole 113 is used to receive the outer end of the fixing member 56, and the assembly hole 55512 is used to receive the inner end of the fixing member 56. By passing the fixing member 56 through the assembly hole 113 and the assembly hole 55512 at both ends, the magnetic connector 55 is fixed in the accommodating space surrounded by the two main side walls 11 and the two retaining walls 19.

[0142] It should be pointed out that the magnetic connector 55 is 180-degree rotationally symmetrical, so that there are two corresponding assembly holes 55512 corresponding to the assembly hole 113 before and after its 180-degree rotation, and the magnetic connector 55 can be fixed in both relative position relationships, thereby facilitating assembly.

[0143] Furthermore, the housing jacket 21 or the housing jacket 31 covers the assembly hole 113 provided on the main side wall 11, and an exposure hole 57 allowing the magnetic connector 55 to be exposed is provided on the corresponding housing jacket 21 and / or the housing jacket 31 for easy use.

[0144] In one embodiment, the bone conduction speaker device further includes a key module 58 disposed in the circuit housing 10. Specifically, the outer surface of the circuit housing 10 is provided with a recessed area 10c, and further provided with a key hole 10d located in the recessed area 10c and used to connect the inner and outer surfaces of the circuit housing 10.

[0145] The number of the recessed areas 10c may be one or more, and one or more button holes 10d may be correspondingly provided in each recessed area 10c, which is not limited here.

[0146] Furthermore, the button module 58 further includes an elastic support 581 , a button 582 and a second button switch 583 .

[0147] The elastic support 581 includes an integrally formed support body 5811, a contact head 5812 and a support column 5813, wherein the support body 5811 is arranged in the recessed area 10c and fixed to the bottom of the recessed area 10c, the support column 5813 is arranged on the side of the support body 5811 facing the outside of the circuit housing 10, and the contact head 5812 is arranged on the other side of the support body 5811 facing the inside of the circuit housing 10 and extends along the button hole 10d.

[0148] The elastic support 581 can be made of a soft material, such as soft rubber, silicone, etc., and can be made of the same material as the housing sheath 21 and the housing sheath 31.

[0149] Furthermore, in order to improve the pressing feel, the button 582 can be made of hard plastic and arranged at one end of the support column 5813 facing the outside of the circuit housing 10. Specifically, the button 582 and the support column 5813 can be fixed together by bonding, injection molding, elastic abutment, etc.

[0150] Among them, the key switch 583 is arranged inside the circuit housing 10 and is arranged corresponding to the key hole 10d, so that when the pressing surface of the key 582 is pressed, the support column 5813 is driven and the contact head 5812 is further driven to pass through the key hole 10d and trigger the key switch 583, so that the bone conduction speaker device performs the corresponding function.

[0151] In the above method, the elastic support 581 is arranged in the recessed area 10c and fixed to the bottom of the recessed area 10c. On the one hand, the support body 5811 covers the key hole 10d arranged in the recessed area 10c, so that the liquid outside the circuit housing 10 is difficult to enter the interior of the circuit housing 10 through the key hole 10d, thereby playing a waterproof and protective role for the internal components of the circuit housing 10; on the other hand, since the elastic support 581 is elastic, the key switch 583 is triggered by the contact head 5812, which can make the contact pressure between the contact head 5812 and the key switch 583 have a certain elasticity, so that the triggering of the key switch 583 will not be too stiff, thereby providing a good tactile feeling for the user when pressing the key 582.

[0152] In one embodiment, the elastic seat 581 can be fixed to the bottom of the recessed area 10 c through the seat body 5811 by gluing or injection molding.

[0153] In one application scenario, the surface of the seat body 5811 facing the inside of the circuit housing 10 and the surface of the bottom of the recessed area 10c of the circuit housing 10 facing the outside of the circuit housing 10 are integrally formed by injection molding, and can be specifically formed by encapsulation.

[0154] In this application scenario, the elastic support 581 and the bottom of the recessed area 10c of the circuit housing 10 are integrally formed by injection molding, so that the connection between the two is more firm, the bonding strength between the two is increased, and the sealing of the circuit housing 10 is improved. On the one hand, this can make the entire key module 58 more stable and reliable, and on the other hand, it can further improve the waterproof effect of the circuit housing 10.

[0155] In one embodiment, the seat body 5811 specifically includes an annular fixing portion 58111 and an elastic supporting portion 58112 .

[0156] The annular fixing portion 58111 is disposed around the button hole 10 d and is fixedly attached to the bottom of the recessed area 10 c , thereby fixing the elastic support 581 and the circuit housing 10 together.

[0157] The elastic support portion 58112 is connected to the inner surface of the annular fixing portion 58111 and rises in a dome-shaped manner toward the exterior of the circuit housing 10, such that the height between its top and bottom is certain in the direction in which the button 582 is pressed, and the top is smaller than the bottom in the direction perpendicular to the pressing direction. The support column 5813 and the contact head 5812 are respectively disposed on either side of the top of the elastic support portion 58112. When the button 582 is pressed, the top of the elastic support portion 58112 is pressed and moves toward its bottom, thereby driving the button 582 toward the button hole 10d until the button switch 583 is triggered.

[0158] It should be noted that due to the relatively small overall structure of the bone conduction speaker device and the relatively close connections between its components, the pressing stroke between the button 582 and the key switch 583 is relatively short, thereby reducing the tactile sensation of pressing the button 582. In this embodiment, since the elastic support portion 58112 is dome-shaped and bulges outward from the circuit housing 10, the distance between the button 582 and the key switch 583, which are disposed on the elastic support portion 58112 and face the outside of the circuit housing 10, can be increased. This in turn increases the pressing stroke of the button 582, thereby enhancing the tactile sensation of the user pressing the button 582.

[0159] In one embodiment, the button 582 includes a button body 5821 and an annular flange 5822 and an annular flange 5823 provided on one side of the button body 5821. The annular flange 5822 and the annular flange 5823 can be specifically provided on the side of the button body 5821 opposite to the pressing surface.

[0160] Specifically, the annular flange 5822 is located in the middle area of the key body 5821, and the annular flange 5823 is located at the outer edge of the key body 5821. The annular flange 5822 and the annular flange 5823 are both formed to protrude in a direction away from the pressing surface of the key body 5821, thereby forming an accommodation space surrounded by the annular flange 5822 and an accommodation space surrounded by the annular flange 5822 and the annular flange 5823. The heights of the annular flange 5822 and the annular flange 5823 protruding relative to the key body 5821 can be equal or different. In this embodiment, the height of the annular flange 5822 protruding relative to the key body 5821 is greater than the height of the annular flange 5823 protruding relative to the key body 5821.

[0161] The support column 5813 is inserted into the accommodating space inside the annular flange 5822. Specifically, the support column 5813 can be fixed to the annular flange 5822 by bonding, injection molding or elastic abutment.

[0162] Furthermore, the annular flange 5823 is sunken into the recessed area 10 c away from the end surface of the button body 5821 , and is spaced a certain distance from the bottom of the recessed area 10 c when the elastic support 581 is in a natural state.

[0163] The bottom of the recessed area 10c refers to the inner wall surface of the recessed area 10c facing the interior of the circuit housing 10. Specifically, when the elastic support 581 is in the natural state, by pressing the pressing surface of the button 582, the top of the elastic support portion 58112 of the elastic support 581 moves toward the interior of the circuit housing 10, and before the end surface of the annular flange 5823 away from the button body 5821 contacts the bottom of the recessed area 10c, the key switch 583 is triggered.

[0164] Furthermore, the button 582 also includes a cylindrical extension arm 5824 disposed on one side of the button body 5821 and protruding from the annular flange 5822 toward the button hole 10d. The support column 5813 is provided with a receiving hole 58131. The receiving hole 58131 extends toward the button hole 10d, passes through the support column 5813, and reaches the contact head 5812. The cylindrical extension arm 5824 is further received in the receiving hole 58131 to support the elastic support 581. Therefore, when the button 582 is pressed and the contact head 5812 triggers the key switch 583, the cylindrical extension arm 5824 supports the contact head 5812, so that the contact head 5812 and the key switch 583 are not too soft, thereby further improving the pressing feel.

[0165] In one embodiment, the key hole 10 d is disposed on the auxiliary side wall 12 of the circuit housing 10 , and the pressing direction of the key switch 583 is perpendicular to the auxiliary side wall 12 and parallel to the main side wall 11 of the circuit housing 10 .

[0166] In this embodiment, the button module 58 and the control circuit 51 correspond to the same circuit housing 10. The control circuit 51 includes a control circuit board, which is arranged inside the circuit housing 10 and spaced apart from the main side wall 11. Specifically, the main surface of the control circuit board is arranged parallel to the main side wall 11.

[0167] Among them, the key switch 583 is arranged on the main surface of the control circuit board, specifically, it can be arranged at one end of the auxiliary side wall 12 of the main surface close to the circuit shell 10, so that the key switch 583 corresponds to the key hole 10d. When the key 582 is pressed, the contact head 5812 is driven to trigger the key switch 583 in a direction parallel to the main side wall 11 and then parallel to the main surface of the control circuit board.

[0168] Through the above method, firstly, the space on the auxiliary side wall 12 of the circuit housing 10 can be fully utilized. Secondly, the key switch 583 is arranged on the end of the main surface of the main control circuit board facing the key hole 10d, so that even if it is arranged on the main surface of the main circuit board, the key switch 583 can still be triggered normally, so there is no need to specially arrange a first key circuit board parallel to the auxiliary side wall 12 of the circuit housing 10, which can reduce the occupation of the internal space of the circuit housing 10 on the one hand, and save costs on the other hand.

[0169] In one embodiment, the circuit housing 10 near the position of the button 582 can be covered by one of the housing cover 21 and the housing cover 31, or by both of them.

[0170] The corresponding housing cover is further provided with an exposure hole 59 for allowing the button 582 to be exposed, so that when the housing cover 21 and / or the housing cover 31 is mounted on the periphery of the circuit housing 10 , the button 582 is exposed through the exposure hole 59 .

[0171] In one embodiment, an annular retaining wall 60 is integrally formed on the inner surface of the shell sheath along the edge of the exposed hole. The annular retaining wall 60 extends along the side wall of the recessed area 10c to the interior of the recessed area 10c. Specifically, it can abut the side wall surface of the circuit shell 10 located in the recessed area 10c, and can further abut the bottom wall surface of the recessed area 10c.

[0172] Furthermore, a sealant may be provided between the outer circumference of the annular retaining wall 60 and the side wall of the recessed area 10c to bond the outer circumference of the annular retaining wall 60 and the side wall of the recessed area 10c together, thereby further fixing the housing jacket 21 and / or the housing jacket 31 to the circuit housing 10.

[0173] In one embodiment, a connector end 24 is injection-molded on the end of the first elastic wire of the earhook 20 that faces the circuit housing 10. An earhook sheath 22 can be further injection-molded onto a portion of the connector end 24 of the first elastic wire, and a housing sheath 21 is integrally formed at the connector end 24. The connector end 24 is plugged and fixed to the end of the first circuit housing 10a that faces the earhook 20. Furthermore, the housing sheath 21 is sheathed around the outer periphery of the first circuit housing 10a from one end, thereby connecting the earhook 20 to the first circuit housing 10a.

[0174] The connection method between the connector 24 and the first circuit housing 10 a may be the same as or different from the connection method between the connector 33 of the rear hook 30 and the first circuit housing 10 a , which is not specifically limited here.

[0175] In one embodiment, a flexible circuit board 44 may be further disposed in the core housing 41 of the bone conduction speaker device.

[0176] Specifically, the flexible circuit board 44 is provided with a plurality of solder pads 45 and two solder pads 46. The two solder pads 46 and the plurality of solder pads 45 are located on the same side of the flexible circuit board 44 and spaced apart. The two solder pads 46 are connected to corresponding two of the plurality of solder pads 45 via flexible leads 47 on the flexible circuit board 44. Furthermore, the core housing 41 also houses two external wires 48. One end of each external wire 48 is soldered to a corresponding solder pad 46, and the other end is connected to the earphone core 42, thereby connecting the earphone core 42 to the solder pads 46 via the external wires 48.

[0177] The auxiliary function module can be mounted on the flexible printed circuit board 44 and connected to other pads in the plurality of pads 45 via flexible leads 49 on the flexible printed circuit board 44. The auxiliary function module can be a module separate from the earphone core 42 that receives auxiliary signals and performs auxiliary functions. For example, the auxiliary function module can be a microphone, a key switch, etc., and the specific configuration can be determined according to actual needs.

[0178] Furthermore, one end of the multiple ear hook wires 23 is welded to the flexible circuit board 44 or the control circuit board provided in the circuit housing 10 , and the other end enters the interior of the movement housing 41 and is welded to the soldering pad 45 on the flexible circuit board 44 .

[0179] Among them, one end of two audio signal wires 231 among the multiple ear hook wires 23 located inside the core shell 41 is welded to two soldering pads 45 welded with two soft leads 47, and the other end can be directly or indirectly connected to the control circuit board. The two soldering pads 45 are further connected to the earphone core 42 through welding of soft leads 49 and two soldering pads 46, and welding of two external wires 48 and soldering pads 46, thereby transmitting audio signals to the earphone core 42.

[0180] One end of at least two auxiliary signal wires 232 located inside the movement housing 41 is welded to the pad 45 welded by the soft lead 49, and the other end can be directly or indirectly connected to the control circuit board, thereby transmitting the auxiliary signal received and converted by the auxiliary function module to the control circuit 51.

[0181] In the above method, a flexible circuit board 44 is provided in the core shell 41, and corresponding soldering pads are further provided on the flexible circuit board 44, so that the ear hook wire 23 is welded on the corresponding soldering pad after entering the core shell 41, and further connected to the corresponding auxiliary function module through the flexible leads 47 and the flexible leads 49 on the soldering pad, thereby avoiding the situation where multiple ear hook wires 23 are directly connected to the auxiliary function module, which makes the wiring in the core shell 41 complicated, thereby optimizing the wiring arrangement and saving the space occupied by the core shell 41; and when multiple ear hook wires 23 are directly connected to the auxiliary function module, the middle part of the ear hook wire 23 is suspended in the core shell 41 and is prone to vibration, thereby causing abnormal noise to affect the sound quality of the earphone core 42, and welding the ear hook wire 23 on the flexible circuit board 44 and further connecting it to the corresponding auxiliary function module in the above method can reduce the situation where the wire is suspended and affects the quality of the earphone core 42, thereby improving the sound quality of the earphone core 42 to a certain extent.

[0182] In one embodiment, the auxiliary function module may include two microphones 432: a first microphone 432a and a second microphone 432b. Both the first microphone 432a and the second microphone 432b may be MEMS (micro-electromechanical system) microphones 432, which have low operating current, relatively stable performance, and produce high-quality voice. The two microphones 432 may be located at different locations on the flexible printed circuit board 44 according to actual needs.

[0183] Among them, the flexible circuit board 44 includes a main circuit board 441 and a branch circuit board 442 and a branch circuit board 443 connected to the main circuit board 441. The branch circuit board 442 extends in the same direction as the main circuit board 441. The first microphone 432a is mounted on the end of the branch circuit board 442 away from the main circuit board 441. The branch circuit board 443 extends perpendicular to the main circuit board 441. The second microphone 432b is mounted on the end of the branch circuit board 443 away from the main circuit board 441. A plurality of solder pads 45 are arranged on the end of the main circuit board 441 away from the branch circuit board 442 and the branch circuit board 443.

[0184] In one embodiment, the core housing 41 includes a surrounding sidewall 411 and a bottom wall 412 connected to one end of the sidewall 411, thereby forming a receiving space with an open end. The earphone core 42 is placed in the receiving space through the open end, the first microphone 432a is fixed to the bottom wall 412, and the second microphone 432b is fixed to the sidewall 411.

[0185] In this embodiment, the branch circuit board 442 and / or the branch circuit board 443 can be bent appropriately to accommodate the placement of the corresponding sound inlet of the microphone 432 on the movement housing 41. Specifically, the flexible circuit board 44 can be positioned within the movement housing 41 such that the main circuit board 441 is parallel to the bottom end wall 412. This allows the first microphone 432a to correspond to the bottom end wall 412 without bending the main circuit board 441. Since the second microphone 432b is fixed to the peripheral side wall 411 of the movement housing 41, the second main circuit board 441 needs to be bent. Specifically, the branch circuit board 443 can be bent at the end away from the main circuit board 441 so that the surface of the branch circuit board 443 is perpendicular to the surfaces of the main circuit board 441 and the branch circuit board 442. This allows the second microphone 432b to be fixed to the peripheral side wall 411 of the movement housing 41 in a direction away from the main circuit board 441 and the branch circuit board 442.

[0186] In one embodiment, the pads 45 , 46 , the first microphone 432 a , and the second microphone 432 b may be disposed on the same side of the flexible printed circuit 44 , and the pads 46 and the second microphone 432 b may be disposed adjacent to each other.

[0187] Specifically, the solder pad 46 can be disposed at the end of the branch circuit board 443 away from the main circuit board 441, oriented in the same direction as the second microphone 432b and spaced apart, so as to be perpendicular to the orientation of the solder pad 45 as the branch circuit board 443 bends. It should be noted that the surface of the branch circuit board 443, after bending, need not be perpendicular to the surface of the main circuit board 441, depending on the arrangement between the peripheral side wall 411 and the bottom end wall 412.

[0188] Furthermore, a rigid support plate 4a for supporting the solder pad 45 and a microphone rigid support plate 4b are provided on the other side of the flexible circuit board 44. The microphone rigid support plate 4b includes a rigid support plate 4b1 for supporting the first microphone 432a and a rigid support plate 4b2 for jointly supporting the solder pad 46 and the second microphone 432b.

[0189] Among them, the rigid support plate 4a, the rigid support plate 4b1, and the rigid support plate 4b2 are mainly used to support the corresponding pads and microphone 432, and therefore need to have a certain strength. The materials of the three can be the same or different, specifically polyimide film (PI), or other materials that can provide strength support, such as polycarbonate, polyvinyl chloride, etc. In addition, the thickness of the three rigid support plates can be set according to the strength of the rigid support plates themselves and the actual strength required by the pads 45, pads 46, and the first microphone 432a and the second microphone 432b, and is not specifically limited here.

[0190] The rigid support plate 4a, the rigid support plate 4b1 and the rigid support plate 4b2 may be three different regions of a rigid support plate as a whole, or may be three independent wholes spaced apart from each other, which is not specifically limited here.

[0191] In one embodiment, the first microphone 432a and the second microphone 432b correspond to two microphone assemblies 4c, respectively. In one embodiment, the two microphone assemblies 4c have the same structure. A sound inlet 413 is provided on the core housing 41. Furthermore, the bone conduction speaker device is provided with an annular retaining wall 414 integrally formed on the inner surface of the core housing 41 and disposed around the sound inlet 413, thereby defining an accommodating space 415 in communication with the sound inlet 413.

[0192] Furthermore, the microphone assembly 4c also includes: a waterproof membrane assembly 4c1.

[0193] The waterproof membrane assembly 4c1 is disposed within the accommodating space 415 and covers the sound inlet 413. The microphone rigid support plate 4b is disposed within the accommodating space 415 and is located on the side of the waterproof membrane assembly 4c1 away from the sound inlet 413, thereby pressing the waterproof membrane assembly 4c1 against the inner surface of the core housing 41. Furthermore, the microphone rigid support plate 4b is provided with a sound inlet 4b3 corresponding to the sound inlet 413. Furthermore, a microphone 432 is disposed on the side of the microphone rigid support plate 4b away from the waterproof membrane assembly 4c1 and covers the sound inlet 4b3.

[0194] Among them, the waterproof membrane assembly 4c1 has the function of being waterproof and sound-permeable, and is tightly fitted to the inner surface of the movement shell 41 to prevent the liquid outside the movement shell 41 from entering the interior of the movement shell 41 through the sound inlet 413 and affecting the performance of the microphone 432.

[0195] The axial directions of the sound inlet 4b3 and the sound inlet 413 may coincide with each other, or they may intersect at a certain angle according to the actual requirements of the microphone 432 and the like.

[0196] The microphone rigid support plate 4b is arranged between the waterproof membrane assembly 4c1 and the microphone 432. On the one hand, it presses the waterproof membrane assembly 4c1 so that the waterproof membrane assembly 4c1 fits tightly against the inner surface of the movement shell 41; on the other hand, the microphone rigid support plate 4b has a certain strength, thereby playing the role of supporting the microphone 432.

[0197] Specifically, the material of the microphone rigid support plate 4b can be polyimide (PI) or other materials that can provide strength support, such as polycarbonate, polyvinyl chloride, etc. In addition, the thickness of the microphone rigid support plate 4b can be set according to the strength of the microphone rigid support plate 4b and the actual strength required by the microphone 432, and is not specifically limited here.

[0198] In one embodiment, the waterproof membrane assembly 4c1 includes a waterproof membrane body 4c11 and an annular rubber pad 4c12. The annular rubber pad 4c12 is disposed on the side of the waterproof membrane body 4c11 facing the microphone rigid support plate 4b and further disposed around the sound inlet 413 and the sound inlet 4b3.

[0199] The microphone rigid support plate 4b is pressed against the annular rubber pad 4c12, so that the waterproof membrane assembly 4c1 and the microphone rigid support plate 4b are bonded and fixed together.

[0200] In one application scenario, the annular rubber pad 4c12 is configured to form a sealed cavity between the waterproof membrane body 4c11 and the rigid support plate, which is connected to the microphone 432 only through the sound inlet 4b3, that is, there is no gap in the connection between the waterproof membrane assembly 4c1 and the microphone rigid support plate 4b, so that the space outside the annular rubber pad 4c12 between the waterproof membrane body 4c11 and the microphone rigid support plate 4b is isolated from the sound inlet 4b3.

[0201] The waterproof membrane body 4c11 can be a waterproof and sound-permeable membrane, which is equivalent to the eardrum of the human ear. When external sound enters through the sound inlet 413, the waterproof membrane body 4c11 vibrates, causing the air pressure in the sealed cavity to change, thereby causing the microphone 432 to emit sound.

[0202] Furthermore, since the vibration of the waterproof membrane body 4c11 causes changes in the air pressure in the sealed cavity, this air pressure must be controlled within an appropriate range. Excessive or insufficient pressure can affect sound quality. In this embodiment, the spacing between the waterproof membrane body 4c11 and the rigid support plate can be 0.1-0.2 mm, specifically 0.1 mm, 0.15 mm, 0.2 mm, etc. This ensures that the air pressure changes in the sealed cavity caused by the vibration of the waterproof membrane body 4c11 are within an appropriate range, thereby improving sound quality.

[0203] In one embodiment, the waterproof membrane assembly 4c1 further includes an annular rubber pad 4c13 disposed on a side of the inner surface of the waterproof membrane body 4c11 facing the movement housing 41 and overlapping with the annular rubber pad 4c12.

[0204] In this way, the waterproof membrane assembly 4c1 can be tightly fitted to the inner surface of the core shell 41 outside the sound inlet 413, thereby reducing the loss of sound entering through the sound inlet 413 and improving the conversion rate of sound into vibration of the waterproof membrane body 4c11.

[0205] The annular rubber pad 4c12 and the annular rubber pad 4c13 can be double-sided tape or sealant, etc.

[0206] In one application scenario, sealant may be further coated on the annular retaining wall 414 and the periphery of the microphone 432 to further improve the sealing, thereby increasing the sound conversion rate and further improving the sound quality.

[0207] In one embodiment, the flexible circuit board 44 can be arranged between the rigid support plate and the microphone 432, and a sound inlet hole 444 is provided at a position corresponding to the sound inlet hole 4b3 of the microphone rigid support plate 4b, so that the vibration of the waterproof membrane body 4c11 caused by external sound passes through the sound inlet hole 444 and further affects the microphone 432.

[0208] Furthermore, the flexible printed circuit board 44 extends further away from the microphone 432 to connect with other functional components or wires to achieve corresponding functions. Correspondingly, the microphone rigid support plate 4b also extends a distance away from the microphone 432 along with the flexible printed circuit board.

[0209] Correspondingly, a notch matching the shape of the flexible printed circuit board is provided on the annular retaining wall 414 to allow the flexible printed circuit board to extend out of the accommodating space 415. In addition, a sealant may be further filled in the notch to further improve the sealing performance.

[0210] Furthermore, in one embodiment, the speaker assembly 40 further includes a key module 4d. The auxiliary function module mounted on the flexible circuit board 44 includes a key switch 431. The key switch 431 and the microphone 432 are respectively disposed in different circuit housings 10. Of course, in other embodiments, they can also be disposed in the same circuit housing 10, which is not specifically limited here.

[0211] Correspondingly, the flexible printed circuit board 44 may include a main circuit board 445 and branch circuit boards 446, wherein the branch circuit boards 446 may extend in a direction perpendicular to the extension direction of the main circuit board 445. A plurality of solder pads 45 are disposed at an end of the main circuit board 445 away from the branch circuit boards 446. The key switches are mounted on the main circuit board 445, and the solder pads 46 are disposed at an end of the branch circuit boards 446 away from the main circuit board 445.

[0212] In this embodiment, the surface of the flexible circuit board 44 is parallel to and spaced apart from the bottom wall 412 , so that the key switch can be disposed toward the bottom wall 412 of the movement housing 41 .

[0213] Correspondingly, the push switch is disposed on the side of the flexible circuit board 44 facing the bottom end wall 412. To facilitate assembly, the solder pads 45 and 46 can be disposed on the side of the flexible circuit board 44 away from the bottom end wall 412, so that the solder pads 45 and 46 and the push switch are disposed on opposite sides of the flexible circuit board 44. It should be noted that the arrangement of the solder pads 45 and 46 and the flexible leads 47 and 49 in this embodiment is the same as the arrangement of the microphone 432 in the above-mentioned embodiment, and will not be repeated here.

[0214] The main circuit board 445 is provided with a rigid support plate 4d3 on the side away from the key switch for supporting the key switch and keeping the pad 45 exposed, and a rigid support plate 4e is provided on the side away from the pad 45 for supporting the pad 45 and keeping the key switch exposed. The branch circuit board 446 is provided with a rigid support plate 4f on the side away from the pad 46 for supporting the pad 46.

[0215] The rigid support plates 4d3, 4e, and 4f can be made of the same material and function as the rigid support plates 4a, 4b1, and 4b2 in the aforementioned embodiment. For details, please refer to the aforementioned embodiment and will not be repeated here. Furthermore, the thickness of the rigid support plates 4d3, 4e, and 4f can be determined based on their inherent strength and the required support strength of the corresponding key switches, solder pads 45, and solder pads 46.

[0216] The key switch 431 and the solder pad 45 can be respectively disposed on both sides of the main circuit board 445 and spaced apart on both sides of the main circuit board 445. Accordingly, the rigid support plate 4d3 corresponding to the key switch 431 and the rigid support plate 4e corresponding to the solder pad 45 are also respectively disposed on both sides of the main circuit board 445, and further bypass the key switch 431 and the solder pad 45, so that the two have adjacent edges disposed adjacent to each other.

[0217] If the adjacent edges of the rigid support plate 4d3 and the rigid support plate 4e are spaced apart on the flexible circuit board 44, only the flexible circuit board 44 is arranged in the space between the adjacent edges. Since the strength of the flexible circuit board 44 is relatively small and the strength of the rigid support plate is relatively large, the flexible circuit board 44 is easily broken by repeatedly bending the flexible circuit board 44 in the spaced area.

[0218] In this embodiment, the projections of the adjacent edges of the rigid support plate 4d3 and the rigid support plate 4e on the flexible circuit board 44 overlap with each other, so that no gap is set between the adjacent edges of the two, or only a gap is set partially, thereby reducing the occurrence of the above-mentioned situation and protecting the flexible circuit board 44.

[0219] A rigid support plate 4d4 may be further provided on the side of the rigid support plate 4d3 away from the flexible circuit board 44 , and the rigidity of the rigid support plate 4d4 is greater than that of the rigid support plate 4d3 .

[0220] Rigid support plate 4d3 corresponds to key switch 431, which is subject to repeated pressure from the user during use and therefore requires higher-strength support. In this embodiment, rigid support plate 4d4 can be made of stainless steel or other materials with higher strength than that of rigid support plate 4d3. Specifically, rigid support plate 4d3 and rigid support plate 4d4 can be formed together by hot pressing.

[0221] In one embodiment, a recessed area 4121 is provided on the inner surface of the movement housing 41, specifically the inner surface of the bottom end wall 412. A key hole 4122 is further provided in the recessed area 4121 for connecting the inner and outer surfaces of the movement housing 41. The recessed area 4121 is formed by the inner surface of the movement housing 41 being recessed toward the outside of the movement housing 41. The key hole 4122 can be further provided in the middle of the recessed area 4121, or in other locations according to actual needs.

[0222] Furthermore, the button module 4d also includes an elastic support 4d1 and a button 4d2.

[0223] The elastic support 4d1 comprises an integrally formed support body 4d11 and a support column 4d12. The support body 4d11 is disposed within the recessed area 4121 and fixed to the bottom of the recessed area 4121. Specifically, the bottom of the recessed area 4121 refers to the inner wall surface of the recessed area 4121 facing away from the movement housing 41. The support column 4d12 is disposed on the side of the support body 4d11 facing the outside of the movement housing 41 and is exposed through the keyhole 4122.

[0224] The elastic support 4d1 can be made of a soft material, such as soft rubber or silicone, and can be the same material as the housing cover 21 and the housing cover 31. To improve the pressing feel, the button 4d2 can be made of hard plastic and positioned on the portion of the support column 4d12 exposed in the button hole 4122. Specifically, the button 4d2 and the support column 4d12 can be fixed together by bonding, injection molding, or elastic abutment.

[0225] In the above method, the elastic seat 4d1 is arranged in the recessed area 4121 and fixed to the bottom of the recessed area 4121, and covers the key hole 4122 from the inner side of the movement shell 41 through the seat body 4d11 to separate the inside of the movement shell 41 from the outside, so that the liquid outside the movement shell 41 is difficult to enter the interior of the movement shell 41 through the key hole 4122, thereby playing a waterproof and protective role for the internal components of the movement shell 41.

[0226] In an application scenario, the elastic seat 4d1 can be fixed to the bottom of the recessed area 4121 by gluing the seat body 4d11. Specifically, adhesive, double-sided tape, etc. can be applied between the surface of the seat body 4d11 facing the outside of the movement shell 41 and the bottom of the recessed area 4121 to stick the two together.

[0227] In one application scenario, the seat body 4d11 can be fixed to the bottom of the recessed area 4121 by injection molding. The surface of the seat body 4d11 facing the outside of the movement shell 41 and the bottom of the recessed area 4121 of the movement shell 41 are integrally formed by injection molding, which can be specifically formed by encapsulation. In this application scenario, the elastic seat 4d1 and the bottom of the recessed area of the movement shell 41 are integrally formed by injection molding, so that the connection between the two is more firm, the bonding strength between the two is increased, and the sealing of the movement shell 41 can be improved. On the one hand, this can make the entire key module 4d more stable and reliable, and on the other hand, it can further improve the waterproof effect of the movement shell 41.

[0228] In one embodiment, the seat body 4d11 includes an annular fixing portion 4d111 and an elastic supporting portion 4d112. The annular fixing portion 4d111 is disposed around the key hole 4122 and is fixedly attached to the bottom of the recessed area 4121, thereby fixing the elastic seat 4d1 to the movement housing 41.

[0229] The elastic support portion 4d112 is connected to the inner surface of the annular fixing portion 4d111 and rises in a dome-shaped manner toward the exterior of the movement housing 41. This ensures a certain height between its top and bottom in the direction in which the key 4d2 is pressed, and its top dimension perpendicular to the pressing direction is smaller than its bottom dimension. The support column 4d12 is disposed on the top of the elastic support portion 4d112. When the key 4d2 is pressed, the top of the elastic support portion 4d112 is pressed, causing it to move toward its bottom, thereby driving the key 4d2 toward the keyhole 4122 until the key switch 431 is triggered.

[0230] It should be noted that due to the relatively small overall structure of the bone conduction speaker device and the relatively tight connections between its components, the pressing stroke between key 4d2 and key switch 431 is relatively short, thereby reducing the tactile sensation of pressing key 4d2. In this embodiment, since the elastic support portion 4d112 protrudes in a dome shape toward the exterior of the movement housing 41, the distance between key 4d2 and key switch 431 inside the movement housing 41 is increased, thereby appropriately increasing the pressing stroke required for key 4d2 to trigger key switch 431, thereby improving the user's tactile sensation of pressing key 4d2.

[0231] Specifically, the bottom of the elastic support part 4d112 is fixed on the side wall surface of the key hole 4122, so that the top of the elastic support part 4d112 is exposed from the key hole 4122, and the support column 4d12 arranged at the end of the elastic support part 4d112 facing the outside of the movement shell 41 is completely exposed to the outside of the movement shell 41, and is then fixed together with the key 4d2 on the outside of the movement shell 41.

[0232] In one embodiment, a recessed area 4123 is provided on the outer surface of the movement housing 41, wherein the key hole 4122 is further located within the recessed area 4123. That is, the recessed area 4121 and the recessed area 4123 are respectively located at the two ends of the key hole 4122 and are penetrated by the key hole 4122. The shapes, sizes, etc. of the recessed areas 4121 and 4123 can be the same or different according to actual needs. In addition, the number of recessed areas 4121 and recessed areas 4123 can be the same, and the number of the two can be determined according to the number of keys 4d2, and can be one or more. Each recessed area 4121 and recessed area 4123 can correspond to one or more key holes 4122, which is not specifically limited here. In this embodiment, the number of keys 4d2 corresponding to the movement housing 41 is one, and corresponds to one recessed area 4121 and one recessed area 4123.

[0233] Among them, the support column 4d12 is supported by the elastic support part 4d112 to the side of the button hole 4122 facing the outside of the movement shell 41 and is located in the recessed area 4123. Furthermore, the button 4d2 is arranged on the side of the elastic support part 4d112 of the support column 4d12. In this embodiment, by setting the height of the elastic support part 4d112 and the support column 4d12 along the pressing direction of the button 4d2, the button 4d2 is at least partially sunk in the recessed area 4123, so as to improve space utilization and reduce the space occupied by the button module 4d.

[0234] In one embodiment, the key 4d2 includes a key body 4d21 and an annular flange 4d22 and an annular flange 4d23 disposed on one side of the key body 4d21. Specifically, the annular flange 4d22 and the annular flange 4d23 can be disposed on opposite sides of the pressing surface of the key body 4d21.

[0235] Specifically, the annular flange 4d22 is located in the middle area of the key body 4d21, and the annular flange 4d23 is located at the outer edge of the key body 4d21. Both the annular flange 4d22 and the annular flange 4d23 protrude in a direction away from the pressing surface of the key body 4d21, thereby forming a columnar accommodation space 4d24 surrounded by the annular flange 4d22 and a ring-shaped accommodation space 4d25 surrounded by the annular flange 4d22 and the annular flange 4d23. The heights of the annular flange 4d22 and the annular flange 4d23 protruding from the key body 4d21 can be equal or different. In this embodiment, the height of the annular flange 4d22 protruding from the key body 4d21 is greater than the height of the annular flange 4d23 protruding from the key body 4d21.

[0236] The support column 4d12 is inserted into the annular flange 4d22, that is, accommodated in the accommodating space 4d24. Specifically, the support column 4d12 can be fixed to the annular flange 4d22 by bonding, injection molding or elastic abutment.

[0237] Furthermore, the annular flange 4d23 is sunken into the recessed area 4123 away from the end surface of the key body 4d21 and is spaced a certain distance from the bottom of the recessed area 4123 when the elastic support 4d1 is in the natural state.

[0238] The bottom of the recessed area 4123 refers to the inner wall surface of the recessed area 4123 facing the interior of the movement housing 41. Specifically, when the elastic support 4d1 is in the natural state, by pressing the pressing surface of the key 4d2, the top of the elastic support portion 4d112 of the elastic support 4d1 moves toward the interior of the movement housing 41, and before the end surface of the annular flange 4d23 away from the key body 4d21 contacts the bottom of the recessed area 4123, the key switch 431 is triggered.

[0239] In one embodiment, the elastic support 4d1 further includes a contact head 4d13 for contacting the push button switch 431. The contact head 4d13 can be arranged on the side of the support body 4d11 close to the inside of the movement shell 41, specifically, it can be arranged in the middle area of the inner wall surface facing the inside of the movement shell 41 at the top of the elastic support part 4d112, and protrudes toward the inside of the movement shell 41 relative to the inner wall surface.

[0240] When the key 4d2 is pressed, the top of the elastic support portion 4d112 of the elastic support 4d1 moves toward the inside of the movement housing 41, thereby driving the contact head 4d13 toward the key switch 431 inside the movement housing 41. The key switch 431 is triggered through the contact head 4d13, thereby realizing the corresponding function. In this way, the pressing stroke of the key 4d2 can be reduced according to actual needs.

[0241] In one embodiment, the speaker assembly 40 is connected to the ear hook 20 through the core housing 41 , and the button module 4d is centrally arranged relative to the speaker assembly 40 or arranged at the proximal end 4g of the speaker assembly 40 close to the top 25 of the ear hook.

[0242] The ear hook top 25 refers to the top portion of the ear hook 20 when the user wears the bone conduction speaker device, which corresponds to the top of the user's ear.

[0243] When a user wears a bone conduction speaker, the earhook tip 25 fits snugly against the head. The vibration of the speaker assembly 40 can be viewed as the reciprocating swing of the earhook tip 25, with the portion of the earhook 20 between the earhook tip 25 and the speaker assembly 40 acting as an arm. The amplitude of the speaker assembly 40's swing (i.e., the vibration acceleration) is positively correlated with the volume it produces. The mass distribution of the speaker assembly 40 significantly affects the amplitude of its reciprocating swing, and thus the volume produced by the speaker assembly 40.

[0244] In this embodiment, the placement of button module 4d on speaker assembly 40 affects the mass distribution of speaker assembly 40, and thus the volume produced. Specifically, based on the principles of dynamics, it can be concluded that when button 4d2 is positioned at a distance 4h from the earhook tip 25, the vibration acceleration of speaker assembly 40 will be less than when button module 4d is positioned at a distance 4g from the earhook tip 25, resulting in a decrease in volume.

[0245] Accordingly, in this embodiment, the button module 4d is centered relative to the speaker assembly 40 or is disposed at the proximal end 4g of the speaker assembly 40 near the top 25 of the ear hook, thereby increasing the vibration acceleration of the speaker assembly 40 and thereby improving the volume of the speaker assembly 40.

[0246] Among them, the projection of the open end of the movement shell 41 on the plane α where the outer surface 4d26 of the button 4d2 is located includes a proximal edge p close to the top of the ear hook 25 and a distal edge q away from the top of the ear hook 25, wherein the shortest distance h1 between the button 4d2 and the proximal edge p is not greater than the shortest distance h2 between the button 4d2 and the distal edge q.

[0247] The outer side surface 4d26 of the key 4d2 refers to the plane of the surface of the key 4d2 away from the key hole 4122. Furthermore, the projection of the opening end on the plane of the outer side surface 4d26 of the key 4d2 covers the key 4d2.

[0248] The shortest distance h1 between the button 4d2 and the proximal edge p is the shortest distance between the side of the button 4d2 close to the top of the ear hook 25 and the side of the proximal edge p close to the top of the ear hook 25; correspondingly, the shortest distance h2 between the button 4d2 and the distal edge q is the shortest distance between the side of the button 4d2 away from the top of the ear hook 25 and the side of the distal edge q away from the top of the ear hook 25.

[0249] Among them, the size relationship between the shortest distance h1 between the button 4d2 and the proximal edge p and the shortest distance h2 between the button 4d2 and the distal edge q corresponds to the button 4d2 being located at the proximal end 4g near the top end 25 of the ear hook, or centered, or set close to the distal end 4h.

[0250] Specifically, when the shortest distance h1 between the button 4d2 and the proximal edge p is less than the shortest distance h2 between the button 4d2 and the distal edge q, the button 4d2 is located at the proximal end 4g of the top end 25 of the ear hook, and as the difference between the shortest distance h1 between the button 4d2 and the proximal edge p and the shortest distance h2 between the button 4d2 and the distal edge q increases, the distance between the button 4d2 and the top end 25 of the ear hook becomes closer; and when the two are equal, the button 4d2 is located in the center.

[0251] In one embodiment, the key 4d2 is axially symmetrically arranged relative to two symmetry directions that intersect each other perpendicularly, wherein the dimension s1 of the key 4d2 in the long axis direction of the two symmetry directions is greater than the dimension s2 of the key 4d2 in the short axis direction of the two symmetry directions.

[0252] Specifically, the shape of the key 4d2 can be oval, rectangular, etc. In this embodiment, the directions of the major axis and minor axis of the key 4d2 are not specifically limited. For example, the major axis can be located in the connection direction between the ear hook 20 and the movement housing 41, or perpendicular to the connection direction between the ear hook 20 and the movement housing 41, or in other directions.

[0253] In one embodiment, the angle θ between the projection of the extension line r of the central axis of the connection part between the ear hook 20 and the speaker assembly 40 on the plane where the outer side surface 4d26 of the button 4d2 is located and the long axis direction is less than 10°, and can specifically be 9°, 7°, 5°, 3°, 1°, etc., which is not specifically limited here.

[0254] The extension line r of the central axis of the connection portion between the ear hook 20 and the speaker assembly 40 may be parallel to the connection direction between the ear hook 20 and the speaker assembly 40 .

[0255] When the angle θ between the projection of the extension line r on the plane where the outer surface 4d26 of the key 4d2 is located and the long axis direction is less than 10°, the long axis direction of the key 4d2 will not deviate too much from the extension direction of the extension line r, so that the key 4d2 is consistent or nearly consistent with the direction of the extension line r of the central axis in the long axis direction.

[0256] In one embodiment, the shortest distance d between the projection of the extended line r of the central axis of the earhook 20 onto the plane where the outer side surface 4d26 of the button 4d2 is located and the intersection of the major and minor axes is less than the dimension s2 of the button 4d2 in the minor axis direction, one of the two symmetric directions. This allows the button 4d2 to be closer to the extended line r of the central axis of the earhook 20. In one application scenario, the projection of the extended line r of the central axis of the earhook 20 onto the plane where the outer side surface 4d26 of the button 4d2 is located can coincide with the major axis, thereby further improving the sound quality of the speaker assembly 40.

[0257] In one embodiment, a first distance L1 exists between the center of mass m1 or centroid of the button module 4d and the earhook tip 25, and a second distance L2 exists between the center of mass m2 or centroid of the remainder of the speaker assembly 40 excluding the button module 4d and the earhook tip 25. In this embodiment, the mass distribution of the button module 4d and the speaker assembly 40 is relatively uniform. Therefore, it can be assumed that the center of mass m1 and centroid of the button module 4d coincide with each other, and the center of mass m2 and centroid of the speaker assembly 40 also coincide with each other.

[0258] The mass distribution of the key module 4d can be reflected by the ratio between the first distance L1 and the second distance L2, as well as the ratio k of the mass of the key module 4d to the mass of the remainder of the speaker assembly 40 excluding the key module 4d. Specifically, if the mass of the key module 4d remains constant, as the ratio between the first distance L1 and the second distance L2 increases, the vibration acceleration of the speaker assembly 40 decreases, thereby reducing the volume. Conversely, if the ratio between the first distance L1 and the second distance L2 remains constant, as the mass of the key module 4d increases, the vibration acceleration of the bone conduction speaker decreases, thereby reducing the volume. Therefore, by adjusting the ratio between the first distance L1 and the second distance L2, as well as the ratio between the mass of the key module 4d and the mass of the remainder of the speaker assembly 40 excluding the key module 4d, the reduction in volume caused by the placement of the key module 4d can be controlled within a range detectable by the human ear.

[0259] In one application scenario, the ratio between the first distance L1 and the second distance L2 may be no greater than 1.

[0260] Specifically, when the ratio between the first distance L1 and the second distance L2 is equal to 1, the center of mass m1 and the centroid of the button module 4d coincide with the center of mass m2 and the centroid of the speaker assembly 40, thereby centered relative to the speaker assembly 40. When the ratio between the first distance L1 and the second distance L2 is less than 1, the center of mass m1 and the centroid of the button module 4d are closer to the earhook tip 25 relative to the center of mass m2 and the centroid of the speaker assembly 40, thereby being located at the proximal end 4g of the speaker assembly 40 near the earhook tip 25. Furthermore, the smaller the ratio between the first distance L1 and the second distance L2, the closer the center of mass m1 and the centroid of the button module 4d are to the earhook tip 25 relative to the center of mass m2 and the centroid of the speaker assembly 40.

[0261] Furthermore, the ratio between the first distance L1 and the second distance L2 may be no greater than 0.95, thereby placing the button module 4d closer to the earhook top 25. The ratio between the first distance L1 and the second distance L2 may also be 0.9, 0.8, 0.7, 0.6, 0.5, etc., and may be set as needed and is not limited here.

[0262] Furthermore, when the ratio between the first distance L1 and the second distance L2 satisfies the above range, the ratio of the mass of the button module 4d to the mass of the rest of the speaker assembly 40 except the button module 4d may not be greater than 0.3, and specifically may be no greater than 0.29, 0.23, 0.17, 0.1, 0.06, 0.04, etc., which is not limited here.

[0263] Among them, the button module 4d in the present application can be set on only one speaker assembly 40. In one embodiment, the number of button modules 4d is two, which are respectively set on two speaker assemblies 40. At this time, the volume of the two speaker assemblies 40 is reduced, making it easier for the human ear to perceive. At this time, the mass of the button module 4d and the mass of the rest of the speaker assembly 40 except the button module 4d may not be greater than 0.1, such as 0.1, 0.6, 0.4, etc.

[0264] In one embodiment of the bone conduction speaker device of the present application, the earphone core 42 of the bone conduction speaker device is a bone conduction earphone core 42 . Specifically, the bone conduction earphone core 42 includes a bracket 421 , a coil 422 and an external wire 48 .

[0265] The bracket 421 is the housing of the earphone core 42 and is used to support and protect the entire structure of the earphone core 42. In this embodiment, the bracket 421 is provided with a wire embedding groove 4211 for accommodating the wires of the earphone core 42.

[0266] The coil 422 can be set on the bracket 421 and has at least one internal lead 423. The internal lead 423 is connected to the main line in the coil 422 to lead out the main line and transmit audio current to the coil 422 through the internal lead 423.

[0267] The external wire 48 is used to connect to the internal lead 423 . Furthermore, the external wire 48 can be connected to the control circuit 51 so as to transmit the audio current to the coil 422 via the internal lead 423 through the control circuit 51 .

[0268] Specifically, during the assembly phase, the external wire 48 and the internal lead 423 need to be connected together by welding or other means. Due to structural limitations, the length of the wire cannot be exactly aligned with the length of the channel after welding, and there is usually excess wire. If the excess wire is not properly placed, it will vibrate with the vibration of the coil 422, causing abnormal noise and affecting the sound quality of the earphone core 42.

[0269] Furthermore, at least one of the external wire 48 and the internal lead 423 can be coiled and arranged in the buried wire groove 4211. In one application scenario, the welding position between the internal lead 423 and the external wire 48 can be set in the buried wire groove 4211, so that the parts of the external wire 48 and the internal lead 423 near the welding position are coiled in the buried wire groove 4211. In addition, to maintain stability, the buried wire groove 4211 can be further filled with sealant to fix the wiring in the buried wire groove 4211.

[0270] In the above method, a wire burying groove 4211 is set on the bracket 421, so that at least one of the external wire 48 and the internal lead 423 is wound and set in the wire burying groove 4211 to accommodate the excess length of the wiring, thereby reducing the vibration generated in the channel, and further reducing the impact of abnormal noise caused by vibration on the sound quality emitted by the earphone core 42.

[0271] In one embodiment, the bracket 421 includes an annular body 4212, a supporting flange 4213, and an outer retaining wall 4214. The annular body 4212, the supporting flange 4213, and the outer retaining wall 4214 can be obtained by integral molding.

[0272] The annular body 4212 is disposed on the inner side of the entire bracket 421 to support the coil 422. Specifically, the cross section of the annular body 4212 in a direction perpendicular to the radial direction of the annular body is consistent with that of the coil 422. The coil 422 is disposed at one end of the annular body 4212 facing the interior of the movement housing 41, and the inner and outer side walls of the annular body 4212 can be flush with the inner and outer side walls of the coil 422, respectively, so that the inner side wall of the coil 422 is coplanar with the inner side wall of the annular body 4212, and the outer side wall of the coil 422 is coplanar with the outer side wall of the annular body 4212.

[0273] Furthermore, a support flange 4213 is provided protrudingly on the outer sidewall of the annular body 4212 and extends outward from the annular body 4212, specifically extending outwardly in a direction perpendicular to the outer sidewall of the annular body 4212. The support flange 4213 may be provided between the two ends of the annular body 4212. In this embodiment, the support flange 4213 may protrude around the outer sidewall of the annular body 4212 to form an annular support flange 4213. In other embodiments, the support flange 4213 may protrude only from a portion of the outer sidewall of the annular body 4212 as needed.

[0274] The outer retaining wall 4214 is connected to the support flange 4213 and is spaced apart from the annular body 4212 along the lateral direction of the annular body 4212. The outer retaining wall 4214 can be spaced apart around the periphery of the annular body 4212 and / or the coil 422. Specifically, depending on actual needs, the outer retaining wall 4214 can be partially spaced around the periphery of the annular body 4212 and the coil 422, while being partially spaced around the periphery of the annular body 4212. It should be noted that in this embodiment, the portion of the outer retaining wall 4214 proximal to the cable embedding groove 4211 is partially spaced around the periphery of the annular body 4212. Specifically, the outer retaining wall 4214 is disposed on the side of the support flange 4213 away from the movement housing 41. The outer wall of the annular body 4212, the side wall of the support flange 4213 away from the movement housing 41, and the inner wall of the outer retaining wall 4214 collectively define the cable embedding groove 4211.

[0275] In one embodiment, a wiring channel 424 is provided on the annular body 4212 and the supporting flange 4213 , and the internal lead wire 423 extends into the wire embedding groove 4211 through the wiring channel 424 .

[0276] The wiring channel 424 includes a sub-wiring channel 4241 located on the annular body 4212 and a sub-wiring channel 4242 located on the supporting flange 4213 . The sub-routing channel 4241 is provided through the inner and outer walls of the annular body 4212. A routing opening 42411 is provided on the side of the annular body 4212 near the coil 422, connecting one end of the sub-routing channel 4241. A routing opening 42412 is provided on the side of the annular body 4212 near the support flange 4213 facing the interior of the movement housing 41, connecting the other end of the sub-routing channel 4241. The sub-routing channel 4242 extends through the support flange 4213 in a direction toward the exterior of the movement housing 41. A routing opening 42421 is provided on the side of the support flange 4213 facing the interior of the movement housing 41, connecting one end of the sub-routing channel 4242. A routing opening 42422 is provided on the side of the support flange 4213 facing the interior of the movement housing 41, connecting the other end of the sub-routing channel 4242. The routing opening 42412 and the routing opening 42421 are connected through the space between the support flange 4213 and the annular body 4212.

[0277] Furthermore, the internal lead 423 can enter the wiring opening 42411, extend along the sub-wiring channel 4241, and pass through the wiring opening 42412 to enter the area between the annular body 4212 and the support flange 4213, and further enter the sub-wiring channel 4242 from the wiring opening 42421, and extend into the buried wire groove 4211 after passing through the wiring opening 42422.

[0278] In one embodiment, a slot 42141 is provided at the top of the outer retaining wall 4214 , and the external wire 48 can extend into the buried wire groove 4211 through the slot 42141 .

[0279] One end of the external wire 48 is disposed on a flexible circuit board 44 , and the flexible circuit board 44 is specifically disposed on a side of the earphone core 42 facing the interior of the core housing 41 .

[0280] In this embodiment, the support flange 4213 further extends to the side of the outer retaining wall 4214 away from the annular body 4212 to form an outer edge. Furthermore, the outer edge surrounds and abuts the inner side wall of the core housing 41. Specifically, the outer edge of the support flange 4213 is provided with a slot 42131, so that the external wire 48 located on the side of the earphone core 42 facing the inside of the core housing 41 can extend through the slot 42131 to the side of the support flange 4213 facing the outside of the core housing 41, and then extend to the slot 42141, and then enter the buried wire groove 4211 through the slot 42141.

[0281] Furthermore, a guide groove 416 is provided on the inner side wall of the movement housing 41, one end of which is located on one side of the flexible circuit board 44 and the other end of which is connected to the slot 42131 and extends toward the outside of the movement housing 41, so that the external wire 48 passes through the guide groove 416 and extends from the flexible circuit board to the second wiring groove 3331.

[0282] In one embodiment, the bracket 421 further includes two side retaining walls 4215 spaced apart along the circumference of the annular body 4212 and connecting the annular body 4212 , the support flange 4213 and the outer retaining wall 4214 , thereby defining a wire embedding groove 4211 between the two side retaining walls 4215 .

[0283] Specifically, the two side retaining walls 4215 are disposed opposite to each other on the support flange 4213, and protrude along the support flange 4213 toward the exterior of the movement housing 41. The sides of the two side retaining walls 4215 facing the annular body 4212 are connected to the outer wall of the annular body 4212, and the sides facing away from the annular body 4212 terminate at the outer wall of the outer retaining wall 4214. The wiring opening 42422 and the slot 42141 are defined between the two side retaining walls 4215, thereby allowing the internal lead wire 423 passing through the wiring opening 42422 and the external lead wire 48 entering the slot 42141 to extend into the wiring trough 4211 defined by the two side retaining walls 4215.

[0284] This application also provides a bone conduction earphone core. In one embodiment, this bone conduction earphone core may have the same structure and functions as the bone conduction earphone core described in the aforementioned embodiment. This bone conduction earphone core may be used in bone conduction speaker devices or other electronic devices that can transmit sound through bone conduction technology. For details, please refer to the aforementioned embodiment and will not be repeated here.

[0285] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A magnetic connector, characterized in that: The magnetic connector includes: A magnetic attraction ring, wherein the outer end surface of the magnetic attraction ring is rotationally symmetric with respect to a preset symmetry point; The first terminal and the second terminal are disposed in the magnetic attraction ring and respectively have a first contact surface and a second contact surface visible from an outer end surface of the magnetic attraction ring, wherein the first contact surface and the second contact surface are arranged so that when the magnetic attraction ring is symmetrically rotated, the first contact surface and the second contact surface before the rotation at least partially overlap with the first contact surface and the second contact surface after the rotation; The outer end face of the magnetic adsorption ring is hollow, so that when the magnetic adsorption ring is adsorbed with the annular magnetic adsorption structure of the corresponding joint, it will be adsorbed and constrained in multiple directions of the ring to accurately position the first contact surface and the second contact surface.

2. The magnetic connector according to claim 1, characterized in that: The outline of the hollow design is the same as the shape of the outer outline of the magnetic attraction ring.

3. The magnetic connector according to claim 2, characterized in that: The outline of the hollow design is any one of circular, elliptical or rectangular.

4. The magnetic connector according to claim 1, wherein: The magnetic attraction ring includes at least two ring segments arranged along the circumference of the magnetic attraction ring, wherein outer end surfaces of two adjacent ring segments have different magnetic polarities.

5. The magnetic connector according to claim 1, wherein: The magnetic attraction ring is designed as a circular ring centered on the symmetrical point, and the first contact surface and the second contact surface are respectively designed as a circle or a circular ring concentrically arranged with the magnetic attraction ring and nested with each other.

6. The magnetic connector according to claim 1, characterized in that: The magnetic attraction ring is rotationally symmetrical at 180 degrees relative to the symmetry point, and the sizes of the magnetic attraction ring in a first direction and a second direction passing through the symmetry point and perpendicular to each other are different.

7. The magnetic connector according to claim 6, characterized in that: The size of the magnetic attraction ring in the first direction is larger than the size in the second direction, the first contact surface is arranged at the symmetrical point, the number of the second contact surfaces is two, and they are arranged on both sides of the symmetrical point along the first direction, and the distance between the second contact surfaces and the symmetrical point is set so that when the magnetic attraction ring rotates 180 degrees, any one of the two second contact surfaces before rotation at least partially overlaps with the other second contact surface after rotation.

8. The magnetic connector according to claim 1, wherein: The magnetic connector further includes an insulating base, which is at least partially inserted into the magnetic adsorption ring. The insulating base is provided with at least two accommodating holes. The first terminal and the second terminal are arranged in a columnar shape and are respectively inserted into their respective accommodating holes. One end surface of the first terminal and the second terminal is visible from the top surface of the insulating base, thereby forming the first contact surface and the second contact surface.

9. The magnetic connector according to claim 8, characterized in that: The insulating base includes a supporting portion and an insertion portion, wherein the cross-section of the supporting portion is larger than the cross-section of the insertion portion, thereby forming a supporting table surface at the connection between the supporting portion and the insertion portion, and the insertion portion is inserted into the magnetic adsorption ring, and the magnetic adsorption ring is further supported on the supporting table surface.

10. A bone conduction speaker device, characterized in that: The bone conduction speaker device includes the magnetic connector according to any one of claims 1 to 9.

11. A magnetic connector, characterized in that: The magnetic connector includes: A magnetic adsorption member, wherein an outer end surface of the magnetic adsorption member is rotationally symmetric with respect to a preset symmetry point; The first terminal and the second terminal are arranged in the magnetic adsorption member and respectively have a first contact surface and a second contact surface visible from the outer end surface of the magnetic adsorption member, wherein the first contact surface and the second contact surface are arranged so that when the magnetic adsorption member rotates symmetrically, the first contact surface and the second contact surface before the rotation at least partially overlap with the first contact surface and the second contact surface after the rotation, respectively, and the first contact surface and the second contact surface are respectively circular or annular designs concentrically arranged with the magnetic adsorption member and nested with each other.

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