Multifunctional sound production device

Abstract

The invention provides a multifunctional sound production device. The multifunctional sound production device comprises a shell with an accommodating space, a vibration unit accommodated in the shell, a driving coil for driving the vibration unit to vibrate, and an elastic sheet fixed on the vibration unit and the shell, the vibration unit comprises a lower clamping plate connected with the elastic sheet and a sound production single body fixed in the lower clamping plate, and a vibration system of the sound production single body comprises a vibrating diaphragm fixed to the basin frame and a voice coil driving the vibrating diaphragm to vibrate and produce sound in the first direction. The magnetic circuit system of the sound production single body comprises main magnetic steel fixed on the lower clamping plate, and the driving coil and the main magnetic steel are oppositely arranged in a spaced mode in the first direction so as to drive the vibration unit to vibrate in the second direction perpendicular to the first direction. The loudspeaker assembly and the motor assembly share one magnetic circuit system, so that the cost is effectively reduced, the vibration sense of the vibration unit is increased, and the performance of the multifunctional sound production device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibration motor, in particular to a multifunctional sound device. BACKGROUND

[0002] In order to meet the extreme experience of audio and vibration haptics of users and reduce the overall structure volume of the device, the loudspeaker and the motor are combined into a multifunctional sound device with audio function and vibration haptics in the related art. Therefore, the multifunctional sound device includes a shell with a receiving space, a loudspeaker assembly and a motor assembly received in the shell.

[0003] However, the loudspeaker assembly and the motor assembly in the multifunctional sound device in the prior art each have a magnetic circuit system, which not only increases the cost, but also reduces the overall quality of the vibration unit, resulting in weak vibration feeling and performance degradation of the multifunctional sound device.

[0004] Therefore, it is necessary to provide a new multifunctional sound device to solve the above technical problems. SUMMARY

[0005] The present application provides a multifunctional sound device, which includes a shell with a receiving space, a vibration unit received in the shell, a driving coil for driving the vibration unit to vibrate, and a spring sheet connecting the vibration unit and the shell; the vibration unit includes a lower clamping plate connected with the spring sheet and a sound emitting monomer fixed in the lower clamping plate, the sound emitting monomer includes a magnetic circuit system fixed on the lower clamping plate, a yoke fixed on the magnetic circuit system, and a vibration system fixed on the yoke, the vibration system includes a diaphragm fixed on the yoke and a voice coil for driving the diaphragm to vibrate and emit sound in a first direction, the shell includes a sound outlet penetrating through the shell in the first direction and arranged opposite to the diaphragm, the sound emitting monomer further includes a sealing member in the form of a ring, the shell further includes an inner edge surrounding the sound outlet, the sealing member is clamped between the yoke and the inner edge, the magnetic circuit system includes a main magnetic steel fixed on the lower clamping plate, the lower clamping plate includes a through hole penetrating through the lower clamping plate in the first direction, the main magnetic steel partially extends above the through hole, and the driving coil is arranged opposite to the main magnetic steel in the first direction to drive the vibration unit to vibrate in a second direction perpendicular to the first direction.

[0006] Preferably, the yoke includes a main body portion for fixing the diaphragm and a first extension portion extending inwardly from the main body portion and arranged opposite to the through hole in the first direction, the magnetic circuit system further includes a first auxiliary magnetic steel fixed on the first extension portion towards the through hole, the first auxiliary magnetic steel and the main magnetic steel form a magnetic gap therebetween, and the driving coil is arranged opposite to the magnetic gap in the first direction.

[0007] Preferably, the first secondary magnetic steel and the driving coil are arranged relative to each other and spaced apart along the first direction.

[0008] Preferably, the projection of the first secondary magnetic steel along the first direction completely falls into the through hole.

[0009] Preferably, the magnetic circuit system also includes a second secondary magnet fixed to the lower clamping plate and forming a magnetic gap with the main magnet, and the basin also includes a second extension portion extending inward from the main body, the basin is rectangular, the second extension portion is arranged on the long axis side of the basin, and the second secondary magnet is fixed to the side of the second extension portion close to the lower clamping plate.

[0010] Preferably, the lower clamping plate further includes a flat plate portion for fixing the second secondary magnet and a bent portion extending from the flat plate portion toward the first direction, one end of the spring is fixed to the bent portion, and the other end is fixed to the housing.

[0011] Preferably, the vibration unit further comprises a mass block stacked on the lower clamping plate, and the mass block is arranged on the peripheral side of the magnetic circuit system.

[0012] Preferably, the mass block is in the shape of a hollow rectangle and surrounds the outside of the magnetic circuit system.

[0013] Preferably, the multifunctional sound-generating device further includes a first FPC board electrically connected to the voice coil and a second FPC board electrically connected to the drive coil, the first FPC board being fixed to one side of the basin frame close to the lower clamping plate, and the second FPC board being fixed to the outer shell.

[0014] Preferably, the number of the driving coils is two, and the two driving coils are arranged relative to each other and spaced apart along the second direction.

[0015] The present invention provides a multifunctional sound-generating device comprising a housing with a housing, a vibration unit housed within the housing, a drive coil for driving the vibration unit, and a spring secured to the vibration unit and the housing. The speaker assembly and motor assembly in the multifunctional sound-generating device share a common magnetic circuit system, saving costs. The speaker assembly serves as part of the motor assembly's vibration unit, increasing the overall mass of the motor assembly's vibration unit and thereby improving the overall performance of the multifunctional sound-generating device.

Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of a multifunctional sound-generating device in an embodiment of the present invention;

[0018] Figure 2 for Figure 1 An exploded view of the multifunctional sound-generating device in the game;

[0019] Figure 3 For the Figure 1 Cross-sectional view along line AA;

[0020] Figure 4 For the Figure 1 Cross-sectional view along the midline BB;

[0021] Figure 5 for Figure 1 A diagram showing the combined structure of the basin frame and the lower plywood in the multifunctional sound-generating device;

[0022] Figure 6 for Figure 1 A combined structural diagram of the magnetic circuit system, lower clamping plate and driving coil in the multifunctional generating device;

[0023] Figure 7 For the Figure 6 Cross-sectional view along the mid-CC line;

[0024] Figure 8 for Figure 1 The combined structure diagram of the spring, voice coil, first FPC board, second FPC board, mass block, magnetic circuit system and lower clamping plate in the multifunctional generating device;

[0025] Figure 9 for Figure 1 A combined structural diagram of the magnetic circuit system and the mass block in the multifunctional generating device;

[0026] In the figure, 100, multi-functional generating device, 01, first direction, 02, second direction, 20, shell, 201, upper shell, 2011, sound outlet, 2012, inner edge, 202, accommodation space, 203, lower shell, 30, vibration unit, 31, lower clamping plate, 310, middle part, 311, through hole, 312, flat plate part, 313, bending part, 32, sound generating unit, 321, magnetic circuit system, 3211 main magnetic steel, 3212, first auxiliary magnetic steel, 3213, magnetic gap, 3214, second auxiliary magnetic steel, 322, yoke, 3221, main body part, 3222, first extension part, 3223, second extension part, 323, vibration system, 3231, diaphragm, 3232, voice coil, 324, sealing element, 33, mass, 34, upper clamping plate, 40, drive coil, 50, spring piece, 60, first FPC board, 61, second FPC board.

DETAILED DESCRIPTION

[0027] To further illustrate the embodiments, the present application provides drawings. These drawings are part of the disclosure of the present application, which mainly serve to illustrate the embodiments, and can be used to explain the operating principle of the embodiments in conjunction with the related description of the specification. Those of ordinary skill in the art should be able to understand other possible implementations and advantages of the present application in conjunction with these. The components in the figure are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0028] The present application is further illustrated below in conjunction with the drawings and embodiments.

[0029] Please refer to Figure 1 and Figure 2 The multi-functional sound generating device 100 provided by the embodiments of the present application includes a shell 20 having an accommodation space 202, a vibration unit 30 accommodated in the shell 20, a drive coil 40 driving the vibration unit 30 to vibrate, and a spring piece 50 fixed to the vibration unit 30 and the shell 20.

[0030] Please refer to Figure 2 , Figure 3 and Figure 4The vibration unit 30 includes a lower clamping plate 31 connected to the spring plate 50 and a sound-emitting unit 32 fixed in the lower clamping plate 31. The lower clamping plate 31 is elastically supported in the shell 20. Of course, the sound-emitting unit 32 is not limited to being elastically supported by the lower clamping plate 31 and the shell 20. The sound-emitting unit 32 includes a magnetic circuit system 321 fixed to the lower clamping plate 31, a basin 322 fixed to the magnetic circuit system 321, and a vibration system 323 fixed to the basin 322. The vibration system 323 includes a diaphragm 3231 fixed to the basin 322 and a voice coil 3232 that drives the diaphragm 3231 to vibrate along the first direction O1 to produce sound. The magnetic circuit system 321 includes a main magnet 3211 fixed to the lower clamping plate 31, and a secondary magnet fixed to the lower clamping plate 31 and forming a magnetic gap 3213 with the main magnet 3211. The secondary magnet and the main magnet 3211 are spaced apart to form a magnetic gap 3213, and the voice coil 3232 is inserted and suspended in the magnetic gap 3213. When energized, the voice coil 3232 generates a force with the magnetic circuit system 321 to drive the sound unit 32 to move along the first direction O1 of the vibration of the diaphragm 3231.

[0031] See Figure 2 The housing 20 includes an upper shell 201 and a lower shell 203 that forms a receiving space 202 with the upper shell 201. The upper shell 201 includes a sound outlet 2011 that passes through it along the first direction 01 and is arranged opposite to the diaphragm 3231, and an inner edge 2012 that surrounds the sound outlet 2011.

[0032] See Figure 2 、 Figure 3 and Figure 4 The sound unit 32 also includes an annular seal 324, which is sandwiched between the basin frame 322 and the inner edge 2012. The seal 324 is used for sealing to prevent dust and water from entering the multifunctional sound-generating device 100. The magnetic circuit system 321 includes a main magnet 3211 fixed to the lower clamping plate 31. The lower clamping plate 31 includes a middle portion 310 located in the middle position and a through hole 311 passing through it along the first direction 01. There are two through holes 311, which are respectively arranged on both sides of the middle portion 310. The main magnet 3211 is arranged in the middle portion 310 and a portion of the structure thereof extends above the through hole 311. The driving coil 40 is arranged relative to the main magnet 3211 along the first direction 01, so as to drive the vibration unit 30 to vibrate along the second direction 02 perpendicular to the first direction 01.

[0033] Compared to existing multifunctional sound-generating devices, where the speaker assembly and motor assembly each have their own magnetic circuit system, the speaker assembly and motor assembly in the multifunctional sound-generating device 100 provided by the present invention share a single magnetic circuit system 321, with the speaker assembly serving as the motor assembly's vibration unit. This design not only reduces costs but also increases the overall quality of the motor's vibration unit, thereby improving the performance of the multifunctional sound-generating device.

[0034] See Figure 3 、 Figure 5 、 Figure 6 and Figure 7 The frame 322 includes a main body 3221 that secures the diaphragm 3231, and a first extension 3222 that extends inward from the main body 3221 and is positioned opposite the through-hole 311 along the first direction O1. The secondary magnets of the magnetic circuit system 321 include two first secondary magnets 3212 fixed to the side of the first extension 3222 facing the through-hole 311. The projections of the first secondary magnets 3212 along the first direction O1 completely fall within the through-hole 311. The first secondary magnets 3212 and the main magnets 3211 form a magnetic gap 3213, and the drive coil 40 is spaced opposite to the magnetic gap 3213 along the first direction O1. The first secondary magnets 3212 and the drive coil 40 are spaced opposite to each other along the first direction O1. There are two drive coils 40, spaced opposite to each other along the second direction O2. This increases the electromagnetic field strength of the drive coils 40 and improves the vibration performance of the vibration unit 30.

[0035] See Figure 4 、 Figure 5 and Figure 8 The secondary magnet of the magnetic circuit system 321 also includes a second secondary magnet 3214 fixed to the lower clamping plate 31 and forming a magnetic gap 3213 with the main magnet 3211. The basin frame 322 also includes a second extension portion 3223 extending inward from the main body 3221. The basin frame is rectangular, and the second extension portion 3223 is arranged on the long axis side of the basin frame 322. The first extension portion 3222 and the second extension portion 3223 are integrally formed with the basin frame 322. The second secondary magnet 3214 is fixed to a side of the second extension portion 3223 close to the lower clamping plate 31. The lower clamping plate 31 also includes a flat plate portion 312 to which the second secondary magnet 3214 is fixed, and a bent portion 313 extending from the flat plate portion 312 toward the first direction 01. One end of the spring 50 is fixed to the bent portion 313, and the other end of the spring 50 is fixed to the upper shell 201. There are two springs 50, spaced apart along the first direction 01 on opposite sides of the lower clamping plate 31. The two springs 50 are used to suspend the vibration unit 30 within the receiving space 202. The springs 50 are elastic components and may also be springs or other elastic components, which are not limited here.

[0036] See Figure 3 and Figure 9 The vibration unit 30 also includes a mass block 33 stacked on the lower clamping plate 31. The mass block 33 is arranged on the periphery of the magnetic circuit system 321. The mass block 33 is a hollow rectangle and surrounds the outside of the magnetic circuit system 321. The magnetic circuit system 321 also includes an upper clamping plate 34 that is arranged relative to the lower clamping plate 31 and stacked on the main magnet 3211.

[0037] See Figure 2 、 Figure 4 and Figure 8 The multifunctional sound-generating device 100 also includes a first FPC board 60 electrically connected to the voice coil 3232, a second FPC board 61 electrically connected to the drive coil 40, and an aluminum ring 70 secured between the diaphragm 3231 and the seal 324. The first FPC board 61 is secured to the side of the frame 322 near the lower clamping plate 31, while the second FPC board 62 is secured to the lower housing 203. The first FPC board 60 electrically connects the external circuit to the voice coil 3232, while the second FPC board 61 electrically connects the external circuit to the drive coil 40. The aluminum ring 70 provides a fixed support.

[0038] The above description is only an embodiment of the present invention. It should be pointed out that those skilled in the art can make improvements without departing from the creative concept of the present invention, but these improvements all fall within the scope of protection of the present invention.

Claims

1. A multifunctional sound-generating device comprising a housing having a receiving space, a vibration unit received in the housing, a driving coil for driving the vibration unit to vibrate, and a spring connecting the vibration unit and the housing; characterized in that: The vibration unit includes a lower splint connected to the elastic sheet and a sound-emitting unit fixed in the lower splint, the sound-emitting unit includes a magnetic circuit system fixed to the lower splint, a basin fixed to the magnetic circuit system and a vibration system fixed to the basin, the vibration system includes a diaphragm fixed to the basin and a voice coil driving the diaphragm to vibrate along a first direction to produce sound, the outer shell includes a sound outlet passing through it along the first direction and arranged opposite to the diaphragm, the sound-emitting unit also includes an annular seal, the outer shell also includes an inner edge surrounding the sound outlet, the seal is clamped between the basin and the inner edge, the magnetic circuit system includes a main magnet fixed to the lower splint, the lower splint includes a through hole passing through it along the first direction, the main magnet partially extends above the through hole, the drive coil and the main magnet are arranged relative to each other along the first direction to drive the vibration unit to vibrate along a second direction perpendicular to the first direction.

2. The multifunctional sound-generating device according to claim 1, characterized in that: The basin frame includes a main body portion for fixing the diaphragm and a first extension portion extending inward from the main body portion and arranged opposite to the through hole along the first direction. The magnetic circuit system also includes a first secondary magnet fixed to the side of the first extension portion facing the through hole. The first secondary magnet and the main magnet form a magnetic gap, and the drive coil and the magnetic gap are arranged relative to each other along the first direction.

3. The multifunctional sound-generating device according to claim 2, characterized in that: The first secondary magnetic steel and the driving coil are arranged relative to each other and spaced apart along the first direction.

4. The multifunctional sound-generating device according to claim 2, characterized in that: A projection of the first secondary magnetic steel along the first direction completely falls into the through hole.

5. The multifunctional sound-generating device according to claim 1, characterized in that: The magnetic circuit system also includes a second secondary magnet fixed to the lower clamping plate and forming a magnetic gap with the main magnet. The basin also includes a second extension portion extending inward from the main body. The basin is rectangular, and the second extension portion is arranged on the long axis side of the basin. The second secondary magnet is fixed to the side of the second extension portion close to the lower clamping plate.

6. The multifunctional sound-generating device according to claim 5, characterized in that: The lower clamping plate further includes a flat plate portion for fixing the second secondary magnet and a bent portion extending from the flat plate portion toward the first direction. One end of the elastic sheet is fixed to the bent portion, and the other end is fixed to the housing.

7. The multifunctional sound-generating device according to claim 1, characterized in that: The vibration unit further includes a mass block stacked on the lower clamping plate, and the mass block is arranged on a peripheral side of the magnetic circuit system.

8. The multifunctional sound-generating device according to claim 1, characterized in that: The mass block is in the shape of a hollow rectangle and surrounds the outside of the magnetic circuit system.

9. The multifunctional sound-generating device according to claim 1, characterized in that: The multifunctional sound-generating device also includes a first FPC board electrically connected to the voice coil and a second FPC board electrically connected to the drive coil. The first FPC board is fixed to one side of the basin frame close to the lower clamping plate, and the second FPC board is fixed to the housing.

10. The multifunctional sound-generating device according to claim 1, characterized in that: The number of the driving coils is two, and the two driving coils are arranged relative to each other and spaced apart along the second direction.

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