CN219305016U

CN219305016U - Multifunctional sounding device

Info

Publication number: CN219305016U
Application number: CN202223412759.XU
Authority: CN
Inventors: 毛路斌; 李子昂; 马杰; 汤赟; 陆冬
Original assignee: AAC Technologies Holdings Nanjing Co Ltd
Current assignee: AAC Technologies Holdings Nanjing Co Ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-07-04
Anticipated expiration: 2032-12-19

Abstract

The utility model provides a multifunctional sounding device which comprises a shell, a sounding unit and a vibration assembly, wherein the sounding unit comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system for driving the vibration system to vibrate and sound along a first direction, the vibration assembly comprises a vibrator suspended on the shell, a coil assembly assembled on the vibrator and arranged opposite to the magnetic circuit system, and an elastic piece for supporting the vibrator, the vibrator is encircling the outer side of the magnetic circuit system at intervals, the coil assembly interacts with the magnetic circuit system to drive the vibrator to vibrate along a second direction perpendicular to the first direction, and the coil assembly comprises an iron core fixed on the vibrator and a coil wound on the iron core. The multifunctional sounding device has small thickness and low production cost.

Description

Multifunctional sounding device

[ field of technology ]

The utility model relates to the technical field of electroacoustic conversion, in particular to a multifunctional sounding device for a portable mobile terminal.

[ background Art ]

With the rapid development of consumer electronics industry, especially smart phones, the requirements of end consumers on equipment use experience are higher and higher, the requirements on hearing and touch experience are gradually improved, and a multifunctional sounding device with a vibration function and sound playing function is widely applied to portable mobile terminal equipment.

In the related art, the multifunctional sounding device comprises a shell, and a sounding monomer and a motor component which are accommodated in the shell, wherein the sounding monomer comprises a basin frame, and a vibration system and a magnetic circuit system which are respectively fixed on the basin frame; however, the motor assembly is stacked below the sounding unit, so that the thickness of the multifunctional sounding device is increased, and the multifunctional sounding device is light and thin and difficult to realize; in addition, sound production monomer with motor assembly has respective magnet steel, makes magnet steel quantity in the multi-functional sound production device is more, and the cost is higher and cause the volume big and can't accomplish miniaturization, and magnetic field drive power mutual interference and influence, thereby makes the acoustic performance and the vibration performance of multi-functional sound production device are relatively poor.

Therefore, it is necessary to provide a new multifunctional sound emitting device to solve the above technical problems.

[ utility model ]

The utility model aims to provide a multifunctional sound generating device which has compact magnetic circuit, smaller volume and stronger vibration function.

In order to achieve the above-mentioned purpose, the present utility model proposes a multifunctional sound-producing device, which includes a housing having a receiving space, a sound-producing unit and a vibration assembly, wherein the sound-producing unit is accommodated in the receiving space, the sound-producing unit includes a basin frame, a vibration system fixed on the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound along a first direction, the vibration assembly includes a vibrator suspended in the receiving space, a coil assembly assembled on the vibrator and disposed opposite to the magnetic circuit system, and an elastic member for supporting the vibrator, the vibrator is spaced around the outside of the magnetic circuit system, the coil assembly interacts with the magnetic circuit system to drive the vibrator to vibrate along a second direction perpendicular to the first direction, and the coil assembly includes an iron core fixed on the vibrator and a coil wound around the iron core.

Preferably, the magnetic circuit system comprises a first magnetic steel fixed on the shell and a second magnetic steel arranged at intervals on the periphery of the first magnetic steel to form a magnetic gap, and the coil interacts with the second magnetic steel.

Preferably, the winding direction of the coil is parallel to the second direction.

Preferably, the second magnetic steel comprises a first magnetizing area, a second magnetizing area and a third magnetizing area which are sequentially arranged along the second direction, the magnetizing directions of the first magnetizing area and the third magnetizing area are the same, and the magnetizing directions of the first magnetizing area and the second magnetizing area are opposite.

Preferably, the vibrator includes a rectangular main body portion including a first main body portion along a long axis direction and a second main body portion along a short axis direction, and the core is fixed to the first main body portion.

Preferably, the elastic member includes a bottom plate supporting the main body portion, a side plate bent from an edge of the bottom plate and extending from one end of the side plate, the bottom plate and the housing are arranged at intervals, the elastic member includes a first connecting portion connected with the side plate, an intermediate elastic portion extending from the first connecting portion along a short axis direction of the main body portion, and a second fixing portion extending from one end of the intermediate elastic portion away from the first connecting portion to be fixed to the housing, and the intermediate elastic portion and the second main body portion are arranged at intervals.

Preferably, the vibrator further includes a third body portion bent and extended from an edge of the first body portion, and the third body portion is fixed to a surface of the side plate away from the case.

Preferably, the first body portion is provided with a notch penetrating therethrough in the first direction, and the core is accommodated in the notch and fixed to the first body portion.

Preferably, the magnetic circuit system further comprises a first pole core fixed on one side of the first magnetic steel close to the vibration system and a third magnetic steel fixed on one side of the first pole core facing the vibration system, the first magnetic steel and the third magnetic steel magnetize along the first direction, and the magnetizing directions of the first magnetic steel and the third magnetic steel are opposite.

Preferably, the magnetic circuit system further comprises a soft magnet fixed on one side of the second magnetic steel facing the first magnetic steel, and two ends of the first magnetic steel along the second direction are respectively provided with one soft magnet.

Compared with the prior art, the multifunctional sound generating device provided by the utility model comprises a shell with an accommodating space, a sound generating monomer and a vibration assembly, wherein the sound generating monomer and the vibration assembly are accommodated in the accommodating space, the sound generating monomer comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system for driving the vibration system to vibrate and generate sound along a first direction, the vibration assembly comprises a vibrator suspended in the accommodating space, a coil assembly assembled on the vibrator and arranged opposite to the magnetic circuit system and an elastic piece for supporting the vibrator, the vibrator is encircling the outer side of the magnetic circuit system at intervals, the coil assembly interacts with the magnetic circuit system to drive the vibrator to vibrate along a second direction perpendicular to the first direction, and the coil assembly comprises an iron core fixed on the vibrator and a coil wound on the iron core. The vibrator fixed with the coil component is arranged on the periphery of the magnetic circuit system in a surrounding manner, so that the thickness of the multifunctional sounding device is reduced, and the miniaturization development is facilitated; and the solenoid structure formed by the coil and the iron core is arranged opposite to the magnetic circuit system, so that the magnetic circuit system is shared by the vibration assembly for providing vibration sense and the vibration system for sounding, the number of magnetic steels is reduced, and meanwhile, the production cost is also reduced.

[ description of the drawings ]

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a perspective view of a multi-functional sound emitting device in accordance with one embodiment of the present utility model;

FIG. 2 is an exploded view of the multi-functional sound emitting device of FIG. 1;

FIG. 3 is a perspective view of a vibration assembly of the multi-functional sound emitting device of FIG. 1;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 5 is a cross-sectional view taken along line B-B in FIG. 1;

FIG. 6 is a perspective view of a portion of the structure of the multi-functional sound emitting device of FIG. 1;

FIG. 7 is a perspective view of a portion of a multi-functional sound device according to another embodiment of the present utility model

[ detailed description ] of the utility model

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1 to 6, the present utility model provides a multifunctional sound generating device 100, which includes a housing 1 having a receiving space 10, and a sound generating unit 2 and a vibration assembly 3 received in the receiving space 10.

The sounding unit 2 comprises a basin frame 21, a vibration system 22 fixed on the basin frame 21 and a magnetic circuit system 23 for driving the vibration system 22 to vibrate and sound in a first direction. The vibration system 22 comprises a vibrating diaphragm 221 fixed on the basin frame 21, a voice coil 222 fixed on the vibrating diaphragm 221, a framework 223 supporting the voice coil 222, and a flexible circuit board 224 electrically connected with the voice coil 222, wherein the voice coil 222 drives the vibrating diaphragm 221 to vibrate and sound along a first direction X. The magnetic circuit 23 includes a first magnetic steel 231 fixed to the housing 1, a second magnetic steel 233 spaced apart from the first magnetic steel 231 to form a magnetic gap 232, a first pole core 234 fixed to a side of the first magnetic steel 231 near the diaphragm 221, a third magnetic steel 235 fixed to a side of the first pole core 234 facing the diaphragm 221, and a second pole core 236 fixed to a side of the second magnetic steel 233 facing the diaphragm 221. It is understood that the voice coil 222 has a racetrack shape, and the second magnetic steel 233 is disposed on the long axis side of the voice coil 222, that is, the second magnetic steel 233 extends along the long axis direction of the voice coil 222.

Further, the middle position of the diaphragm 221 is fixed on the surface of the third magnetic steel 235 away from the first pole core 234; the second pole core 236 is fixed to the basin stand 21. The frame 21 includes a first support 211 fixedly connected with the second pole 236, and a second support 212 fixed above the first support 211, and the outer edge of the diaphragm 221 is sandwiched between the first support 211 and the second support 212. The voice coil 222 is inserted into the magnetic gap 232 through the bobbin 223.

The vibration assembly 3 includes a vibrator 31 suspended in the accommodating space 10, a coil assembly 32 assembled to the vibrator 31 and disposed opposite to the magnetic circuit system 23, and an elastic member 33 supporting the vibrator 31; the vibrator 31 is surrounded on the outer side of the magnetic circuit system 23 at intervals, and the coil assembly 32 interacts with the magnetic circuit system 23 to drive the vibrator 31 to vibrate along a second direction Y perpendicular to the first direction X; the coil block 32 includes an iron core 321 fixed to the vibrator 31, and a coil 322 wound around the iron core 321.

The second magnetic steel 233 includes a first magnetizing region 2331, a second magnetizing region 2332, and a third magnetizing region 2333 sequentially arranged along the second direction Y, the magnetizing directions of the first magnetizing region 2331 and the third magnetizing region 2333 are the same, and the magnetizing directions of the first magnetizing region 2331 and the second magnetizing region 2332 are opposite. The first magnetic steel 231 and the third magnetic steel 235 are magnetized along the first direction X, and the magnetizing directions of the first magnetic steel 231 and the third magnetic steel 235 are opposite.

Specifically, the vibrator 31 surrounds the outer side of the second magnetic steel 233, and the coil 322 and the second magnetic steel 233 are disposed at opposite intervals and interact with each other. The winding direction of the coil 322 is parallel to the second direction Y.

The vibrator 31 includes a rectangular main body 311, and the main body 311 includes a first main body 3111 along a long axis, a second main body 3112 along a short axis, and a third main body 3113 bent and extended from an edge of the first main body; the iron core 321 is fixed to the first body 3111. Further, the elastic member 33 includes a bottom plate 331 supporting the main body 311, a side plate 332 bent and extended from an edge of the bottom plate 331, and an elastic portion 333 extended from one end of the side plate, and the bottom plate 331 is spaced from the housing 1; the elastic portion 333 includes a first connection portion 3331 connected to the side plate 332, an intermediate elastic portion 3332 extending from the first connection portion 3331 in the short axis direction of the main body portion 311, and a second fixing portion 3333 extending from an end of the intermediate elastic portion 3332 away from the first connection portion 3331 to be fixed to the housing 1, wherein the intermediate elastic portion 3332 is provided at a distance from the second main body portion 3112. The third body 3113 is fixed to a surface of the side plate 332 remote from the housing 1.

Further, the first body 3111 is provided with a notch 3114 penetrating therethrough in the first direction X, and the iron core 321 is accommodated in the notch 3114 and fixed to the first body 3111.

Because the second magnetic steel 233 is of a three-section magnetizing structure, in order to avoid the canceling effect of the driving force of the sounding unit 2 by the first magnetizing region 2331 and the third magnetizing region 2333, as shown in fig. 7, the magnetic circuit system 23 in another embodiment of the present utility model further includes a soft magnet 237 fixed on a side of the second magnetic steel 233 facing the first magnetic steel 231; it can be appreciated that the first magnetic steel 231 is provided with one soft magnet 237 at each end along the second direction Y, so as to reduce the driving force loss of the sound generating unit 2.

In order to further enhance the magnetic field performance of the magnetic circuit system 23, the magnetic circuit system 23 further includes a fourth magnetic steel 238 disposed at intervals on the peripheral side of the first magnetic steel 231, and the fourth magnetic steel 238 is disposed on the short axis side of the voice coil 222; it should be appreciated that, as shown in fig. 4, since the fourth magnetic steel 238 is disposed at two ends of the first magnetic steel 231 along the long axis direction (i.e., two ends along the second direction Y), in order to avoid collision between the vibrator 31 and the fourth magnetic steel 238 when vibrating along the second direction Y, the fourth magnetic steel 238 is fixed on the surface of the second pole core 236 away from the diaphragm 221, and the thickness of the fourth magnetic steel 238 is smaller than the thickness of the second magnetic steel 233 along the first direction X, i.e., the fourth magnetic steel 238 is suspended in the accommodating space 10, which is not fixed on the housing 1.

While the utility model has been described with respect to the above embodiments, it should be noted that modifications can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the utility model.

Claims

1. The utility model provides a multi-functional sound production device, its includes the casing that has accommodation space and accept in sound production monomer and vibration subassembly in accommodation space, sound production monomer includes the basin frame, be fixed in vibration system of basin frame and drive vibration system is along the magnetic circuit of first direction vibration sound production, its characterized in that, vibration subassembly including hang in vibrator in accommodation space, assemble in the vibrator and with the coil assembly of magnetic circuit relative setting and the elastic component of support vibrator, the vibrator interval encircle in the magnetic circuit outside, coil assembly with magnetic circuit interact in order to drive the vibrator is along with the perpendicular second direction vibration of first direction, coil assembly includes be fixed in the iron core of vibrator and twine in the coil of iron core.

2. The device of claim 1, wherein the magnetic circuit comprises a first magnetic steel fixed to the housing and a second magnetic steel spaced apart from the first magnetic steel to form a magnetic gap, and the coil interacts with the second magnetic steel.

3. The multi-function sound emitting device of claim 2, wherein the winding direction of the coil is parallel to the second direction.

4. The multi-functional sound emitting device of claim 3, wherein the second magnetic steel comprises a first magnetization region, a second magnetization region, and a third magnetization region that are sequentially aligned along the second direction, wherein the magnetization directions of the first magnetization region and the third magnetization region are the same, and the magnetization directions of the first magnetization region and the second magnetization region are opposite.

5. The multi-functional sound emitting device of claim 1, wherein the vibrator includes a rectangular main body portion including a first main body portion along a long axis direction and a second main body portion along a short axis direction, and the core is fixed to the first main body portion.

6. The device of claim 5, wherein the elastic member comprises a bottom plate supporting the main body, a side plate bent from an edge of the bottom plate and an elastic portion extending from one end of the side plate, the bottom plate is spaced from the housing, the elastic portion comprises a first connecting portion connected to the side plate, a middle elastic portion extending from the first connecting portion along a short axis direction of the main body, and a second fixing portion extending from an end of the middle elastic portion away from the first connecting portion to be fixed to the housing, and the middle elastic portion is spaced from the second main body.

7. The multi-functional sound emitting device of claim 6, wherein the vibrator further comprises a third body portion bent and extended from an edge of the first body portion, the third body portion being fixed to a surface of the side plate away from the housing.

8. The device of claim 7, wherein the first body portion has a notch extending therethrough in the first direction, and the core is received in the notch and secured to the first body portion.

9. The device of claim 2, wherein the magnetic circuit further comprises a first pole core fixed to a side of the first magnetic steel adjacent to the vibration system and a third magnetic steel fixed to a side of the first pole core facing the vibration system, the first magnetic steel and the third magnetic steel are magnetized in the first direction, and the magnetization directions of the first magnetic steel and the third magnetic steel are opposite.

10. The multifunctional sound generating device according to claim 2, wherein the magnetic circuit system further comprises soft magnets fixed on one side of the second magnetic steel facing the first magnetic steel, and two ends of the first magnetic steel along the second direction are respectively provided with one soft magnet.