Vibrating sound producing device

Abstract

The application provides a vibrating sound production device, which comprises a shell, a sound production unit accommodated in the shell, a driving unit fixed in the shell and used for driving the sound production unit to vibrate, and an elastic support unit used for elastically supporting the sound production unit in the shell; the sound production unit comprises a yoke elastically suspended in the shell, a magnetic circuit system fixed to the yoke, a first vibrating system and a second vibrating system fixed to opposite sides of the magnetic circuit system respectively; the driving unit comprises a first driving unit and a second driving unit arranged opposite to the first driving unit; opposite sides of the shell are respectively provided with a first sound outlet hole and a second sound outlet hole penetrating through the shell, the first sound outlet hole is arranged opposite to the first vibrating system, and the second sound outlet hole is arranged opposite to the second vibrating system. The vibrating sound production device realizes the combination of a receiver, a loudspeaker and a vibrating motor, effectively reduces the occupied space, and has good privacy call effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electro-acoustic conversion, and particularly relates to a vibration sound generating device. BACKGROUND

[0002] A loudspeaker is a transducer device for converting an electric signal into an acoustic signal, and particularly a micro loudspeaker is often applied to small electronic devices capable of generating sound, such as a mobile phone, a telephone watch, a game machine and a tablet computer. However, some electronic devices, such as a mobile phone and a game machine, not only need to generate sound, but also need to provide vibration feedback to improve the experience. Such a transducer device having both sound generating function and vibration function is generally referred to as a multifunctional sound generating device.

[0003] The multifunctional sound generating device in the related art mainly comprises a shell, a vibrator accommodated in the shell, an elastic piece elastically suspending the vibrator in the shell, and a stator fixed in the shell; the vibrator mainly comprises a sound generating unit and a vibration piece arranged opposite to the stator; the sound generating unit mainly comprises a frame, a vibration system and a magnetic circuit system for driving the vibration system to vibrate and generate sound, which are fixed to the frame; and the stator is used to drive the vibration piece to vibrate the whole vibrator.

[0004] The multifunctional sound generating device described above can only produce low or high sound when it vibrates and generates sound, which means that the sound generating unit can only serve as a receiver or a loudspeaker to make it have the sound generating function, and the stator and the vibrator can make the multifunctional sound generating device serve as a motor to make it have the vibration function. When the sound generating unit serves as a receiver, the multifunctional sound generating device can only realize the combination of a receiver and a motor; and when the sound generating unit serves as a loudspeaker, the multifunctional sound generating device can only realize the combination of a loudspeaker and a motor.

[0005] Therefore, the multifunctional sound generating device in the related art can only realize the combination of two functions, and when it is applied to a small electronic device which needs to realize the combination of a receiver, a loudspeaker and a motor, it can only increase one sound generating unit, which will increase the volume of the small electronic device. Therefore, the multifunctional sound generating device described above cannot be applied to a small electronic device which has limited installation space and needs to realize the combination of a receiver, a loudspeaker and a motor. SUMMARY

[0006] The present application aims to provide a vibration sound generating device to solve the problem that the multifunctional loudspeaker in the related art cannot be applied to a small electronic device which has limited installation space and needs to realize the combination of a receiver, a loudspeaker and a motor.

[0007] The application provides a vibrating sound production device, which comprises a shell, a sound production unit accommodated in the shell, a driving unit fixed in the shell and used for driving the sound production unit to vibrate in a first direction, and an elastic supporting unit used for elastically supporting the sound production unit in the shell; the sound production unit comprises a frame elastically suspended in the shell, a magnetic circuit system fixed to the frame, a first vibration system and a second vibration system fixed to opposite sides of the magnetic circuit system in a second direction respectively, and the magnetic circuit system drives the first vibration system and the second vibration system to vibrate in the second direction to produce sound respectively; the driving unit comprises a first driving unit fixed to the magnetic circuit system close to the second vibration system and a second driving unit arranged opposite to the first driving unit in the second direction; the first driving unit is one of a driving coil and a driving magnetic steel, and the second driving unit is the other one of the driving coil and the driving magnetic steel; the shell is provided with a first sound outlet hole and a second sound outlet hole penetrating through opposite sides of the shell in the second direction respectively, the first sound outlet hole is arranged opposite to the first vibration system, the second sound outlet hole is arranged opposite to the second vibration system, and the second sound outlet hole surrounds the second driving unit; and the first direction is perpendicular to the second direction.

[0008] Preferably, the magnetic circuit system comprises a magnetic bowl, a main magnetic steel fixed to the magnetic bowl close to the first vibration system in a stacking mode, and a secondary magnetic steel arranged around the main magnetic steel and fixed to the frame; the magnetic bowl comprises a bottom wall opposite to the first vibration system and spaced apart from the first vibration system, and a flange extending in a direction close to the first vibration system from a periphery of the bottom wall; the main magnetic steel is fixed to a side of the bottom wall close to the first vibration system in a stacking mode and spaced apart from the flange to form a first magnetic gap, the secondary magnetic steel is located on a side of the flange away from the main magnetic steel and spaced apart from the flange to form a second magnetic gap, the first driving unit is fixed to a side of the bottom wall away from the first vibration system in a stacking mode, the first vibration system is fixed to a side of the secondary magnetic steel away from the second vibration system, and the second vibration system is fixed to a side of the secondary magnetic steel away from the first vibration system.

[0009] Preferably, the magnetic circuit system further comprises a first upper clamping plate and a second upper clamping plate respectively fixed to the yoke and located at opposite sides of the auxiliary magnetic steel along the second direction, and a pole core fixed to a side of the main magnetic steel away from the bottom wall; the first upper clamping plate comprises a first main body portion in a ring shape and fixed to the yoke, and a first laminated portion protruding inwardly from an end of the first main body portion close to the second vibration system and laminatedly fixed to a side of the auxiliary magnetic steel close to the first vibration system, the first laminated portion extending to the flange and being fixedly connected with the flange, and the first vibration system being fixed to an end of the first main body portion away from the second vibration system; the second upper clamping plate comprises a second main body portion in a ring shape and fixed to the yoke, and a second laminated portion protruding inwardly from an end of the second main body portion close to the first vibration system and laminatedly fixed to a side of the auxiliary magnetic steel close to the second vibration system, and the second vibration system being fixed to an end of the second main body portion away from the first vibration system.

[0010] Preferably, the first vibration system comprises a first diaphragm fixed to an end of the first main body portion away from the auxiliary magnetic steel, and a first voice coil fixed to a side of the first diaphragm close to the magnetic circuit system, the first voice coil being inserted and suspended in the first magnetic gap and used to drive the first diaphragm to vibrate and emit sound along the second direction.

[0011] Preferably, the second vibration system comprises a second diaphragm fixed to an end of the second main body portion away from the auxiliary magnetic steel, and a second voice coil fixed to a side of the second diaphragm close to the magnetic circuit system, the second voice coil being inserted and suspended in the second magnetic gap and used to drive the second diaphragm to vibrate and emit sound along the second direction.

[0012] Preferably, the second diaphragm is provided with a through hole passing therethrough at a region corresponding to the first driving member, and the first driving member extends to pass through the through hole in a direction close to the second driving member.

[0013] Preferably, the second diaphragm comprises a second vibration portion in a ring shape, a second ball top fixed to a side of the second vibration portion away from the magnetic circuit system, a second folded ring portion bent and extended from an outer periphery of the second vibration portion, and a second fixed portion extended from an outer periphery of the second folded ring portion toward the second main body portion and fixed to the second main body portion; the through hole is provided in the second ball top.

[0014] Preferably, the vibration sound generating device further comprises a first elastic sealing ring surrounding the first sound hole and fixed between the first vibration system and the shell, a second elastic sealing ring surrounding the second sound hole and fixed between the second vibration system and the shell, and a third elastic sealing ring arranged in the second elastic sealing ring and fixed between the second vibration system and the shell; the second driving member is located in the third elastic sealing ring, and the shell, the sound generating unit, the first elastic sealing ring and the second elastic sealing ring jointly enclose a closed back cavity.

[0015] Preferably, the vibration sound generating device further comprises a first flexible circuit board electrically connected with the first voice coil, one end of the first flexible circuit board being connected to the first voice coil and the other end extending out of the shell to form a first conductive part electrically connected with an external circuit, and the vibration sound generating device further comprises a second flexible circuit board electrically connected with the second voice coil, one end of the second flexible circuit board being connected to the second voice coil and the other end extending out of the shell to form a second conductive part electrically connected with an external circuit, the first conductive part having a first conductive surface for electrical connection, the second conductive part having a second conductive surface for electrical connection, and the second conductive surface and the first conductive surface being located at the same end of the shell and arranged side by side in a flat manner.

[0016] Preferably, the vibration sound generating device further comprises a third flexible circuit board electrically connected with the driving coil, one end of the third flexible circuit board being fixed to the shell away from the first vibration system and electrically connected with the driving coil, and the other end extending out of the shell to form a third conductive part electrically connected with an external circuit; the third conductive part having a third conductive surface for electrical connection, and the third conductive surface and the second conductive surface being located at the same end of the shell and arranged side by side in a flat manner.

[0017] Compared with the related art, in the vibration sound generating device, the first vibration system and the second vibration system are respectively designed on the opposite sides of the magnetic circuit system, and the driving member is designed to drive the sound generating unit to vibrate in the first direction, so that the first vibration system and the second vibration system can generate low and high sounds respectively when vibrating and sounding, so that the sound generating unit formed by the yoke, the magnetic circuit system, the first vibration system and the second vibration system simultaneously serves as a receiver and a loudspeaker, and the driving member and the sound generating unit cooperate to serve as a motor, i.e. the electric linear actuator technology can be used to drive the sound generating device to generate linear vibration, which is equivalent to that the vibration sound generating device realizes the combination of the receiver, the loudspeaker and the motor in one, has a small size and can effectively reduce the occupied space, and can be completely applied to small electronic devices with limited installation space and the combination of the receiver, the loudspeaker and the motor in one. In addition, the anti-phase sound elimination of the first vibration system and the second vibration system can also make the vibration sound generating device realize private conversation in function, and the private conversation effect is good. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0019] Figure 1 A three-dimensional structural schematic diagram of the vibration sound-generating device provided in an embodiment of the present invention;

[0020] Figure 2 This is a partial structural exploded view of the vibration sound-generating device provided in an embodiment of the present invention;

[0021] Figure 3 For along Figure 1 Cross-sectional view of line AA in the middle;

[0022] Figure 4 For along Figure 1 Cross-sectional view of the BB line.

[0023] Wherein, 100, vibration sound production device; 1, shell; 11, bottom plate; 12, upper cover; 13, first sound hole; 14, second sound hole; 2, sound production monomer; 21, basin frame; 22, magnetic circuit system; 221, magnetic bowl; 2211, bottom wall; 2212, flange; 222, main magnetic steel; 223, auxiliary magnetic steel; 224, first upper clamping plate; 2241, first main body part; 2242, first stacking part; 225, second upper clamping plate; 2251, second main body part; 2252, second stacking part; 226, pole core; 23, first vibration system; 231, first vibration diaphragm; 2311, first vibration part; 2312, first ball top; 2313, first folded ring part; 2314, first fixed part; 232, first voice coil; 24, second vibration system; 241, second vibration diaphragm; 2411, second vibration part; 2412, second ball top; 2413, second folded ring part; 2414, second fixed part; 242, second voice coil; 243, through hole; 25, first magnetic gap; 26, second magnetic gap; 31, first driving piece; 32, second driving piece; 4, first elastic sealing ring; 5, second elastic sealing ring; 6, third elastic sealing ring; 7, first flexible circuit board; 71, first fixed arm; 72, second fixed arm; 73, first elastic arm; 74, first support part; 75, first conductive part; 8, second flexible circuit board; 81, third fixed arm; 82, fourth fixed arm; 83, second elastic arm; 84, second support part; 85, first lamination part; 86, second conductive part; 87, elastic piece; 9, third flexible circuit board; 91, second lamination part; 92, third lamination part; 93, third conductive part; 10, elastic support piece. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0025] The embodiment of the present application provides a vibration sound production device 100, which combines Figures 1 to 4 As shown in the figure, it comprises a shell 1, a sound production monomer 2 accommodated in the shell 1, a driving piece fixed in the shell 1 and used for driving the sound production monomer 2 to vibrate in a first direction, and an elastic support piece 10 elastically supporting the sound production monomer 2 in the shell 1.

[0026] The vibration sound production device 100 is in the shape of a rectangle as a whole; the housing 1 is provided with a first sound outlet hole 13 and a second sound outlet hole 14 penetrating through opposite sides of the housing 1 along the second direction; the housing 1 comprises a bottom plate 11 and an upper cover 12 fixed to the bottom plate 11, and a second driving member 32 is fixed to the bottom plate 11.

[0027] The first sound outlet hole 13 is arranged on the side of the upper cover 12 opposite to the bottom plate 11, and the second sound outlet hole 14 is arranged on the bottom plate 11 and comprises a plurality of second sound outlet holes 14 arranged at intervals; the plurality of second sound outlet holes 14 are arranged around the middle region of the bottom plate 11, so that the middle region of the bottom plate 11 can provide a mounting position for the second driving member 32. In the embodiment, the second sound outlet hole 14 is four and arranged around the second driving member 32.

[0028] The sound production unit 2 comprises a yoke 21 elastically suspended in the housing 1, a magnetic circuit system 22 fixed to the yoke 21, a first vibration system 23 and a second vibration system 24 fixed to opposite sides of the magnetic circuit system 22 along the second direction, and the magnetic circuit system 22 drives the first vibration system 23 and the second vibration system 24 to vibrate along the second direction to produce sound; the first sound outlet hole 13 is arranged opposite to the first vibration system 23, and the second sound outlet hole 14 is arranged opposite to the second vibration system 24, and the first direction is perpendicular to the second direction. The first direction is the X-axis direction in Figure 1 or Figure 2 , and the second direction is the Y-axis direction in Figure 1 or Figure 2 .

[0029] The driving member comprises a first driving member 31 fixed to the magnetic circuit system 22 close to the second vibration system 24 and a second driving member 32 arranged opposite to the first driving member 31 along the second direction, and the second driving member 32 is fixed to the bottom plate 11 close to the magnetic circuit system 22 and located in the middle region of the bottom plate 11.

[0030] The magnetic circuit system 22 comprises a magnetic bowl 221, a main magnetic steel 222 fixed to the magnetic bowl 221 close to the first vibration system 23, and a secondary magnetic steel 223 arranged around the main magnetic steel 222 and fixed to the yoke 21.

[0031] The magnetic bowl 221 comprises a bottom wall 2211 opposite to the first vibration system 23 and spaced apart, and a flange 2212 bent and extended from the periphery of the bottom wall 2211 to the direction close to the first vibration system 23; the main magnetic steel 222 is fixed to the side of the bottom wall 2211 close to the first vibration system 23 and spaced apart from the flange 2212 to form a first magnetic gap 25, the secondary magnetic steel 223 is spaced apart from the flange 2212 to form a second magnetic gap 26, and the first driving member 31 is fixed to the side of the bottom wall 2211 away from the first vibration system 23 and spaced apart from the secondary magnetic steel 223.

[0032] In the embodiment, the yoke 21 is rectangular, the flange 2212 includes two, and the two flanges 2212 are respectively formed by extending two long axis sides of the bottom wall 2211; the auxiliary magnetic steel 223 includes four, and two auxiliary magnetic steels 223 located on the long axis side of the yoke 21 are fixed to the inner side of the yoke 21.

[0033] The magnetic circuit system 22 further includes a first upper clamping plate 224 and a second upper clamping plate 225 respectively fixed to the yoke 21 and located on opposite sides of the auxiliary magnetic steel 223 along the second direction, and a pole core 226 stacked and fixed to the side of the main magnetic steel 222 away from the bottom wall 2211; the first upper clamping plate 224 includes a first main body part 2241 in a ring shape and fixed to the yoke 21, and a first stacking part 2242 inwardly and outwardly protruding and extending from one end of the first main body part 2241 close to the second vibration system 24 and stacked and fixed to the side of the auxiliary magnetic steel 223 close to the first vibration system 23, the first stacking part 2242 extends to the flange 2212 and forms a fixed connection with the flange 2212, and the first vibration system 23 is fixed to the end of the first main body part 2241 away from the second vibration system 24; the second upper clamping plate 225 includes a second main body part 2251 in a ring shape and fixed to the yoke 21, and a second stacking part 2252 inwardly and outwardly protruding and extending from one end of the second main body part 2251 close to the first vibration system 23 and stacked and fixed to the side of the auxiliary magnetic steel 223 close to the second vibration system 24, and the second vibration system 24 is fixed to the end of the second main body part 2251 away from the first vibration system 23.

[0034] In the embodiment, the first stacking part 2242 and the second stacking part 2252 each include four, and the other two of the four auxiliary magnetic steels 223 are indirectly stacked and fixed to the yoke 21 through the first upper clamping plate 224 and the second upper clamping plate 225; the two second stacking parts 2252 located on the long axis side of the yoke 21 form fixed connections with the two flanges 2212, respectively, so that the first main body part 2241 and the magnetic bowl 221 form an integrated structure. The end of the first main body part 2241 away from the second vibration system 24 is farther away from the second vibration system 24 than the end of the first stacking part 2242 away from the second vibration system 24, so as to provide a fixed position for the first diaphragm 231 below, and the first folding ring part 2313 and the first vibration part 2311 of the first diaphragm 231 can be spaced from the first stacking part 2242 to generate vibration; the end of the second main body part 2251 away from the first vibration system 23 is farther away from the first vibration system 23 than the end of the second stacking part 2252 away from the first vibration system 23, so as to provide a fixed position for the second diaphragm 241 below, and the second folding ring part 2413 and the second vibration part 2411 of the second diaphragm 241 can be spaced from the second stacking part 2252 to generate vibration.

[0035] The first vibration system 23 comprises a first diaphragm 231 fixed to one end of the first main body portion 2241 away from the auxiliary magnetic steel 223 and a first voice coil 232 fixed to the first diaphragm 231 on the side close to the magnetic circuit system 22, the first voice coil 232 being inserted and suspended in the first magnetic gap 25 and used to drive the first diaphragm 231 to vibrate and emit sound in the second direction.

[0036] The first diaphragm 231 comprises a first vibration portion 2311 in the shape of a ring, a first ball top 2312 fixed to the first vibration portion 2311 on the side away from the magnetic circuit system 22, a first folded ring portion 2313 extended from the outer periphery of the first vibration portion 2311, and a first fixed portion 2314 extended from the outer periphery of the first folded ring portion 2313 towards the first main body portion 2241 and fixed to the first main body portion 2241.

[0037] The second vibration system 24 comprises a second diaphragm 241 fixed to one end of the second main body portion 2251 away from the auxiliary magnetic steel 223 and a second voice coil 242 fixed to the second diaphragm 241 on the side close to the magnetic circuit system 22, the second voice coil 242 being inserted and suspended in the second magnetic gap 26 and used to drive the second diaphragm 241 to vibrate and emit sound in the second direction.

[0038] The second diaphragm 241 is provided with a through hole 243 passing therethrough in the region corresponding to the first driving member 31, and the first driving member 31 extends to pass through the through hole 243 in the direction close to the second driving member 32. The through hole 243 is designed to make the second driving member 32 further away from the first driving member 31, so as to improve the driving effect between the two.

[0039] The second diaphragm 241 comprises a second vibration portion 2411 in the shape of a ring, a second ball top 2412 fixed to the second vibration portion 2411 on the side away from the magnetic circuit system 22, a second folded ring portion 2413 extended from the outer periphery of the second vibration portion 2411, and a second fixed portion 2414 extended from the outer periphery of the second folded ring portion 2413 towards the second main body portion 2251 and fixed to the second main body portion 2251; the through hole 243 is provided in the second ball top 2412.

[0040] The first driving member 31 is one of a driving coil and a driving magnetic steel, and the second driving member 32 is the other one of the driving coil and the driving magnetic steel.

[0041] In this embodiment, the first driving member 31 comprises two driving magnetic steels arranged at intervals; the second driving member 32 comprises two driving coils arranged at intervals. Of course, according to actual needs, the second driving member 32 can also comprise an iron core fixed to the shell 1, and the driving coil is wound around the iron core; or the first driving member 31 is a driving coil, and the second driving member 32 is a driving magnetic steel.

[0042] The vibration sound production device 100 further comprises a first elastic sealing ring 4 surrounding the first sound hole 13 and fixed between the first vibration part 2311 of the first vibration system 23 and the shell 1, a second elastic sealing ring 5 surrounding the second sound hole 14 and fixed between the second vibration part 2411 of the second vibration system 24 and the shell 1, and a third elastic sealing ring 6 arranged in the second elastic sealing ring 5 and fixed between the second ball top 2412 of the second vibration system 24 and the shell 1; the second driving member 32 is located in the third elastic sealing ring 6, and the shell 1, the sound production unit 2, the first elastic sealing ring 4 and the second elastic sealing ring 5 jointly form a closed rear cavity. The first sound hole 13 and the first vibration system 23 form a first front cavity, the second sound hole 14 and the second vibration system 24 form a second front cavity, and the design of the first elastic sealing ring 4, the second elastic sealing ring 5 and the third elastic sealing ring 6 can block the rear cavity, the first front cavity and the second front cavity, and simultaneously play a waterproof and dustproof role, and in addition, the elasticity of the first elastic sealing ring 4, the second elastic sealing ring 5 and the third elastic sealing ring 6 can also play a damping role.

[0043] The third elastic sealing ring 6 not only forms a ring-shaped vibration structure for the second diaphragm 241, but also seals the inner periphery of the second diaphragm 241, so that the second diaphragm 241 can normally produce sound.

[0044] In the embodiment, the elastic support 10 includes two and is arranged on the two short shaft sides of the yoke 21 respectively; and the elastic support is fixed to the periphery of the upper cover 12 of the shell 1. The elastic support 10 can be selected from components with elastic effect such as springs or elastic sheets.

[0045] The vibration sound production device 100 further comprises a first flexible circuit board 7 electrically connected with the first voice coil 232, the first flexible circuit board 7 comprising a first fixed arm 71 fixed between the first main part 2241 and the first diaphragm 231 and in a ring shape, a second fixed arm 72 fixed between the first voice coil 232 and the first diaphragm 231, a first elastic arm 73 bent and extended from the first fixed arm 71 to the second fixed arm 72 and fixedly connected with the second fixed arm 72, a first support part 74 bent and extended from the first fixed arm 71 to a direction away from the second vibration system 24, and a first conductive part 75 electrically connected with an external circuit, which is bent and extended from one end of the first support part 74 away from the first fixed arm 71 to the periphery of the shell 1 and fixed to the periphery of the shell 1, and the first conductive part 75 extends to the outside of the shell 1 and has a first conductive surface. In this way, the first voice coil 232 can be electrically connected with an external power supply through the first conductive part 75.

[0046] The vibration sound generating device 100 further comprises a second flexible circuit board 8 electrically connected with the second voice coil 242, the second flexible circuit board 8 comprises a third fixed arm 81 fixed to the yoke 21, a fourth fixed arm 82 fixed to the second voice coil 242, a second elastic arm 83 bent and extended from the third fixed arm 81 to the fourth fixed arm 82 and fixedly connected with the fourth fixed arm 82, a second supporting part 84 bent and extended from the third fixed arm 81 to a direction away from the first vibration system 23, a first abutting part 85 bent and extended from one end of the second supporting part 84 away from the third fixed arm 81 to a direction close to the first vibration system 23 and abuttingly fixed to the circumferential side of the shell 1, and a second conductive part 86 bent and extended from one end of the first abutting part 85 away from the second supporting part 84 to the outside of the shell 1 and electrically connected with the external circuit, the second conductive part 86 extends to the outside of the shell 1 and has a second conductive surface; the second conductive surface and the first conductive surface are respectively located at the same end of the shell 1 and arranged side by side in parallel. In this way, the second voice coil 242 can be electrically connected with the external power supply through the second conductive part 86.

[0047] The vibration sound generating device 100 further comprises an elastic member 87, the elastic member 87 and the second flexible circuit board 8 are respectively located at two short axis sides of the second voice coil 242, the elastic member 87 has substantially the same structure as the second flexible circuit board 8, but only comprises the third fixed arm 81, the fourth fixed arm 82 and the second elastic arm 83.

[0048] The vibration sound generating device 100 further comprises a third flexible circuit board 9 electrically connected with the drive coil, the third flexible circuit board 9 comprises a second abutting part 91 abuttingly fixed to the bottom plate 11 of the shell 1 away from the first vibration system 23 and connected with the drive coil, a third abutting part 92 bent and extended from one end of the second abutting part 91 close to the first conductive part 75 to a direction close to the first vibration system 23 and abuttingly fixed to the circumferential side of the shell 1, and a third conductive part 93 bent and extended from the third abutting part 92 to the outside of the shell 1 and electrically connected with the external circuit, the third conductive part 93 extends to the outside of the shell 1 and has a third conductive surface electrically connected with the external circuit; the second abutting part 91 is abuttingly fixed to the bottom plate 11 and electrically connected with the drive coil through the bottom plate 11, the second abutting part 91 is completely abutting to the middle area of the bottom plate 11 at a position corresponding to the drive coil, the third conductive surface and the second conductive surface are respectively located at the same end of the shell 1 and arranged side by side in parallel. In this way, the drive coil can be electrically connected with the external power supply through the third conductive part 93, and the first conductive surface, the second conductive surface and the third conductive surface are arranged side by side in parallel at the same side of the shell, so that the vibration sound generating device 100 can be better applied to the corresponding electronic device, i.e. the vibration sound generating device 100 is convenient to electrically connected with the electronic device.

[0049] Compared with the related art, the vibration sound production device 100 in the embodiment can produce low and high sounds respectively when the first vibration system 23 and the second vibration system 24 vibrate to sound, so as to make the sound production device formed by the yoke 21, the magnetic circuit system 22, the first vibration system 23 and the second vibration system 24 simultaneously act as a receiver and a loudspeaker, and make the driving member and the sound production unit 2 cooperate to act as a motor, that is, the electric linear actuator (ELA) technology can be used to drive the sound production device to produce linear vibration, which is equivalent to that the vibration sound production device 100 of the application realizes the combination of the receiver, the loudspeaker and the motor, has small size and can effectively reduce the occupied space, and can be completely applied to small electronic devices which have limited installation space and need to realize the combination of the receiver, the loudspeaker and the motor. In addition, the vibration sound production device 100 can realize private conversation in function by the anti-phase sound elimination of the first vibration system 23 and the second vibration system 24, that is, the reverse shock absorption of the first vibration system 23 and the second vibration system 24, so as to have good private conversation effect.

[0050] The above is only the embodiment of the application, and it should be pointed out that those skilled in the art can make improvements without departing from the inventive concept, but these all belong to the protection scope of the application.

Claims

1. A vibration-generating sound device, the vibration-generating sound device comprising a housing, a sound-generating unit housed within the housing, a driving member fixed within the housing for driving the sound-generating unit to vibrate along a first direction, and an elastic support member for elastically supporting the sound-generating unit within the housing; characterized in that, The sound-generating unit includes a frame elastically suspended within the housing, a magnetic circuit system fixed to the frame, and a first vibration system and a second vibration system respectively fixed to opposite sides of the magnetic circuit system along a second direction. The magnetic circuit system drives the first vibration system and the second vibration system to vibrate and generate sound along the second direction. The driving component includes a first driving component fixed to the magnetic circuit system near the second vibration system and a second driving component directly opposite the first driving component along the second direction. The first driving component is one of a driving coil and a driving magnet, and the second driving component is the other of a driving coil and a driving magnet. The housing has a first sound outlet and a second sound outlet on opposite sides along the second direction. The first sound outlet is directly opposite the first vibration system, and the second sound outlet is directly opposite the second vibration system. The second sound outlet surrounds the second driving component. The first direction and the second direction are perpendicular to each other. The magnetic circuit system includes a magnetic cup, a main magnet stacked and fixed on the side of the magnetic cup near the first vibration system, an auxiliary magnet arranged around the main magnet and fixed to the basin frame, and a first upper clamping plate and a second upper clamping plate respectively fixed to the basin frame and located on opposite sides of the auxiliary magnet along the second direction. The second upper clamping plate includes a second main body portion that is annular and fixed to the basin frame, and a second overlapping portion that extends inward from the end of the second main body portion near the first vibration system and is stacked and fixed to the auxiliary magnet on the side near the second vibration system. The second vibration system is fixed to the end of the second main body portion away from the first vibration system. The second vibration system includes a second diaphragm fixed to one end of the second main body away from the auxiliary magnet and a second voice coil fixed to the side of the second diaphragm near the magnetic circuit system. The second voice coil is used to drive the second diaphragm to vibrate and produce sound in the second direction. The second diaphragm has a through hole in the area corresponding to the first driving member, and the first driving member extends toward the second driving member to pass through the through hole; The vibration-generating device further includes a first elastic sealing ring surrounding the first sound outlet and fixed between the first vibration system and the housing, a second elastic sealing ring surrounding the second sound outlet and fixed between the second vibration system and the housing, and a third elastic sealing ring disposed within the second elastic sealing ring and fixed between the second vibration system and the housing; the third elastic sealing ring is disposed around the through hole, the second driving member is located within the third elastic sealing ring, and the housing, the sound-generating unit, the first elastic sealing ring and the second elastic sealing ring together form a sealed rear cavity.

2. The vibration-generating sound device as described in claim 1, characterized in that, The magnetic bowl includes a bottom wall that is directly opposite to and spaced from the first vibration system, and a flange that bends and extends from the periphery of the bottom wall toward the first vibration system. The main magnet is stacked and fixed on the side of the bottom wall that is close to the first vibration system and forms a first magnetic gap with the flange. The auxiliary magnet is located on the side of the flange that is away from the main magnet and forms a second magnetic gap with the flange. The first driving member is stacked and fixed on the side of the bottom wall that is away from the first vibration system. The first vibration system is fixed on the side of the auxiliary magnet that is away from the second vibration system. The second vibration system is fixed on the side of the auxiliary magnet that is away from the first vibration system.

3. The vibration-generating sound device as described in claim 2, characterized in that, The magnetic circuit system further includes a pole core stacked and fixed to the side of the main magnet away from the bottom wall; the first upper clamping plate includes a first main body portion that is annular and fixed to the basin frame and a first stacked portion that protrudes inward from the end of the first main body portion near the second vibration system and is stacked and fixed to the side of the auxiliary magnet near the first vibration system, the first stacked portion extending to the flange and forming a fixed connection with the flange, the first vibration system being fixed to the end of the first main body portion away from the second vibration system.

4. The vibration-generating sound device as described in claim 3, characterized in that, The first vibration system includes a first diaphragm fixed to one end of the first main body away from the auxiliary magnet and a first voice coil fixed to the side of the first diaphragm near the magnetic circuit system. The first voice coil is inserted and suspended in the first magnetic gap and is used to drive the first diaphragm to vibrate and produce sound in the second direction.

5. The vibration-generating sound device as described in claim 4, characterized in that, The second diaphragm includes a ring-shaped second vibrating part, a second dome fixed to the side of the second vibrating part away from the magnetic circuit system, a second folded ring extending from the outer periphery of the second vibrating part, and a second fixing part extending from the outer periphery of the second folded ring towards the second main body and fixed to the second main body; the through hole is provided in the second dome.

6. The vibration-generating sound device as described in claim 4, characterized in that, The vibration-generating device further includes a first flexible circuit board electrically connected to the first voice coil. One end of the first flexible circuit board is connected to the first voice coil, and the other end extends out of the housing to form a first conductive portion electrically connected to an external circuit. The vibration-generating device further includes a second flexible circuit board electrically connected to the second voice coil. One end of the second flexible circuit board is connected to the second voice coil, and the other end extends out of the housing to form a second conductive portion electrically connected to an external circuit. The first conductive portion has a first conductive surface for electrical connection, and the second conductive portion has a second conductive surface for electrical connection. The second conductive surface and the first conductive surface are located at the same end of the housing and are arranged side by side and flush.

7. The vibration-generating sound device as described in claim 6, characterized in that, The vibration sound-generating device further includes a third flexible circuit board electrically connected to the drive coil. One end of the third flexible circuit board is attached and fixed to the side of the housing away from the first vibration system and electrically connected to the drive coil. The other end extends to the outside of the housing to form a third conductive part electrically connected to an external circuit. The third conductive part has a third conductive surface for electrical connection. The third conductive surface and the second conductive surface are located at the same end of the housing and are arranged side by side and flush.

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