CN212812012U

CN212812012U - Sound production device

Info

Publication number: CN212812012U
Application number: CN202021264777.6U
Authority: CN
Inventors: 肖波
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-03-26
Anticipated expiration: 2030-06-30
Also published as: WO2022000686A1

Abstract

The utility model discloses a sounding device, which comprises a sounding monomer and a front cover fixed on the sounding monomer, wherein the sounding monomer comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate and sound; the vibration system comprises a vibrating diaphragm used for vibrating and sounding, the front cover is arranged on the vibrating diaphragm and is far away from one side of the magnetic circuit system along the vibration direction, the sounding device further comprises an outer sealing piece which is sleeved and fixed on the outer peripheral side of the front cover and is annular, and the sounding unit is hermetically fixed with a shell of external equipment through the outer sealing piece. Compared with the prior art, the utility model discloses a sounding device's is small, and is with low costs, and water-proof effects is good.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustoelectric field especially relates to a sounding device.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of mobile phones are very diverse, one of them is a high-quality music function, and therefore, a sound generating device for playing sound is widely applied to the current smart mobile devices.

The sound production device of the related art comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are respectively supported and fixed on the basin frame and drive the vibration system to vibrate, the vibration system comprises a vibrating diaphragm used for producing sound, and the sound production device further comprises a front cover and a waterproof foam block.

However, the waterproof foam block in the sound generating device of the related art is attached and fixed on one side of the front cover, which is far away from the vibrating diaphragm, and the waterproof effect is achieved by controlling the compression amount of the waterproof foam block along the vibrating direction of the vibrating diaphragm, but the cost of the waterproof mode is high, and the miniaturization design of the sound generating device is not facilitated.

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

[ Utility model ] content

An object of the utility model is to provide a small, with low costs, and sound production device that water-proof effects is good.

In order to achieve the above object, the present invention provides a sound generating device, which comprises a sound generating unit and a front cover fixed on the sound generating unit, wherein the sound generating unit comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate and generate sound; the vibration system comprises a vibrating diaphragm used for vibrating and sounding, the front cover is arranged on the vibrating diaphragm and is far away from one side of the magnetic circuit system along the vibration direction, the sounding device further comprises an outer sealing piece which is sleeved and fixed on the outer peripheral side of the front cover and is annular, and the sounding unit is hermetically fixed with a shell of external equipment through the outer sealing piece.

Preferably, the sound production device further comprises an annular inner sealing member clamped and fixed between the sound production single body and the front cover along a vibration direction perpendicular to the vibrating diaphragm.

Preferably, the sounding unit further comprises a basin frame, the vibrating diaphragm and the magnetic circuit system are fixed to two opposite sides of the basin frame along the vibrating direction respectively, and the front cover is arranged on one side, close to the vibrating diaphragm, of the basin frame.

Preferably, one side of the basin frame close to the vibrating diaphragm is recessed along the vibration direction to form a fixed step, and the front cover is connected with the peripheral side of the basin frame; the front cover comprises a front cover body part pressed on one side of the vibrating diaphragm, which is far away from the basin frame, a first through hole penetrating through the front cover body part, and a side wall extending from the front cover body part to the magnetic circuit system direction and abutting against the fixed step; the outer sealing piece is sleeved on the front cover body, and the inner sealing piece is clamped between the side wall and the basin frame along the direction perpendicular to the vibration direction.

Preferably, the fixed step is provided with an annular first recessed portion recessed along a direction perpendicular to the vibration direction, the outer peripheral edge of the front cover body portion is recessed to form an annular second recessed portion, the inner peripheral edge of the side wall is recessed along a direction perpendicular to the vibration direction to form an annular third recessed portion opposite to the second recessed portion, the outer sealing element is accommodated in the second recessed portion and partially exposed out of the second recessed portion, and the inner sealing element is simultaneously pressed and accommodated in the first recessed portion and the third recessed portion.

Preferably, the vibrating diaphragm includes a vibrating portion, a second through hole penetrating through the vibrating portion, a dome attached to the vibrating portion and completely covering the second through hole, a folded ring portion extending by bending outward at the periphery of the vibrating portion, and a fixing portion extending by bending at a side of the folded ring portion away from the vibrating portion, and the fixing portion is clamped and fixed between the frame and the front cover body portion.

Preferably, the outer sealing element includes a first main body part accommodated and fixed in the second recess and a first boss protruding and extending from the first main body part in a direction away from the front cover body part, and at least a part of the first boss is exposed out of the second recess; the inner sealing piece is arranged around the fixed step and comprises a second main body part and a second boss, the second main body part is fixedly contained in the third sunken part, the second boss protrudes and extends in the direction away from the side wall from the second main body part, and the second boss is fixedly contained in the first sunken part.

Preferably, the outer sealing element and the inner sealing element are both made of silicone material.

Preferably, the front cover, the outer sealing element and the inner sealing element are integrally formed by injection molding.

Compared with the prior art, the utility model discloses a sounding device establishes including the cover and is fixed in the periphery side of protecgulum just is annular external seal, the sound production monomer passes through the external seal forms sealedly fixedly with external equipment's casing. This structure is through control the external seal is along the perpendicular the compression volume of vibrating diaphragm vibration direction is in order to reach water-proof effects, and the external seal sets up at the protecgulum, can not increase the overall height of sound production device does benefit to the miniaturized design of sound production device. In addition, the design of the outer sealing element can achieve the waterproof effect without consuming excessive materials, so that the production cost is reduced.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic perspective view of the sound device of the present invention;

FIG. 2 is an exploded view of a part of the three-dimensional structure of the sound device of the present invention;

FIG. 3 is an exploded view of the sound device according to the present invention;

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

fig. 5 is an enlarged view of a portion B shown in fig. 4.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a sound generating device 100, where the sound generating device 100 includes a sound generating unit 1, and the sound generating unit 1 includes a vibration system 11 and a magnetic circuit system 12 for driving the vibration system 11 to vibrate and generate sound; the vibration system 11 includes a diaphragm 111 for vibrating sound.

The sound generating unit 1 further comprises a basin frame 13, and the vibrating diaphragm 111 and the magnetic circuit system 12 are fixed on two opposite sides of the basin frame 13 along the vibration direction respectively.

In order to increase the weight of the sound-generating device 100 and improve the stability thereof, the sound-generating device 100 further comprises a front cover 2 fixed on the sound-generating unit 1, and the front cover 2 is covered on one side of the basin frame 13 close to the vibrating diaphragm 111.

The sounding device 100 is installed and fixed on an external device, and the external device is an intelligent terminal, a mobile terminal and the like. In order to make the sound generating device 100 have a waterproof function in use of an external device, so as to improve reliability, in the present embodiment, the sound generating device 100 further includes an annular outer sealing member 3 fixed to an outer peripheral side of the front cover 2 in a sleeved manner, and an annular inner sealing member 4 fixed between the sound generating unit 1 and the front cover 2 in a manner of being interposed in a direction perpendicular to a vibration direction of the diaphragm 111. The sound generating unit 1 is hermetically fixed with a shell of an external device through the outer sealing piece 3. The arrangement of the structure is characterized in that the outer sealing element 3 and the inner sealing element 4 are controlled to be perpendicular to the compression amount of the vibration direction of the vibrating diaphragm 111 so as to achieve a waterproof effect, and the outer sealing element 3 and the inner sealing element 4 are respectively arranged on the front cover 2 and the outer peripheral edge of the basin frame 13, so that the overall height of the sounding device 100 cannot be increased, and the miniaturization design of the sounding device 100 is facilitated. In addition, the design of the outer sealing element 3 and the inner sealing element 4 can achieve the waterproof effect without consuming excessive materials, thereby reducing the production cost.

In the present embodiment, the outer seal member 3 and the inner seal member 4 are both made of a silicone material. Of course, without being limited thereto, the outer seal 3 and the inner seal 4 may be made of other waterproof materials.

It is worth mentioning that, in order to simplify the process flow and improve the production efficiency, the front cover 2, the outer sealing element 3 and the inner sealing element 4 are integrally formed by injection molding.

Specifically, one side of the frame 13 close to the diaphragm 111 is recessed along the vibration direction to form a fixed step 131, and the front cover 2 is connected to the outer periphery of the frame 13; the front cover 2 comprises a front cover body 21 pressed on one side of the diaphragm 111 far away from the basin frame 13, a first through hole 22 penetrating through the front cover body 21, and a side wall 23 extending from the front cover body 21 to the magnetic circuit system 12 and abutting against the fixed step 131; the outer sealing member 3 is sleeved on the front cover body part 21, and the inner sealing member 4 is clamped between the side wall 23 and the basin frame 13 along a direction perpendicular to the vibration direction.

In the above configuration, the side wall 23 is formed by extending the front cover body 21 in the direction of the magnetic circuit system 12, and the side wall 23 abuts against the fixed step 131. The fixed step 131 functions to receive the side wall 23 and thereby reduce the lateral dimension of the sounder device 100.

Further, the fixed step 131 is provided with an annular first recessed portion 132 recessed along a direction perpendicular to the vibration direction, the outer peripheral edge of the front cover body 21 is recessed to form an annular second recessed portion 24, the inner peripheral edge of the side wall 23 is recessed along a direction perpendicular to the vibration direction to form an annular third recessed portion 25 opposite to the second recessed portion 24, the outer sealing element 3 is accommodated in the second recessed portion 24 and partially exposed out of the second recessed portion 24, and the inner sealing element 4 is simultaneously pressed and accommodated in the first recessed portion 132 and the third recessed portion 25.

Furthermore, the diaphragm 111 includes a vibration portion 1111, a second through hole 1112 penetrating through the vibration portion 1111, a dome 1113 attached to the vibration portion 1111 and completely covering the second through hole 1112, a ring bending portion 1114 bent and extended outward from the periphery of the vibration portion 1111, and a fixing portion 1115 bent and extended from a side of the ring bending portion 1114 away from the vibration portion 1111, and the fixing portion 1115 is sandwiched and fixed between the frame 13 and the front cover body 21.

In this embodiment, the arrangement of the dome 1113 enhances the vibration effect of the diaphragm 111, and improves the acoustic performance of the sound generating device 100.

Preferably, in the present embodiment, the outer seal member 3 includes a first main body portion 31 that is accommodated and fixed in the second recessed portion 24, and a first boss 32 that is protruded and extended from the first main body portion 31 in a direction away from the front cover main body portion 21, and the first boss 32 is at least partially exposed to the second recessed portion 24; the inner sealing member 4 is disposed around the fixing step 131, and the inner sealing member 4 includes a second main body 41 fixed to the third recess 25 and a second protrusion 42 protruding from the second main body 41 in a direction away from the sidewall 23, and the second protrusion 42 is fixed to the first recess 132.

It should be noted that the first recessed portion 132, the second recessed portion 24 and the third recessed portion 25 are arranged to receive and fix the outer seal 3 and the inner seal 4, so that the outer seal 3 and the inner seal 4 do not increase the volume of the sound generating device 100 too much, and in addition, because the outer seal 3 and the inner seal 4 are made of silicone material, they have elastic deformation, so the increase in volume is almost negligible.

The magnetic circuit system 12 comprises a magnetic bowl 121 fixed on the basin stand 13, a main magnetic steel 122 fixedly arranged on the magnetic bowl 121, an auxiliary magnetic steel 123 arranged on the peripheral side of the main magnetic steel 122 and forming a magnetic gap 10 with the main magnetic steel 122 at an interval, and an upper clamping plate 124 attached and fixed on one side of the auxiliary magnetic steel 123 far away from the magnetic bowl 121.

In this embodiment, the upper plate 124 and the frame 13 are integrally injection molded, and the upper plate 124 is embedded in the frame 13, so that the overall rigidity of the frame 13 is increased, and the acoustic performance of the sound generating device 100 is better.

The vibration system 11 further includes a voice coil 112 inserted in the magnetic gap 10 to drive the diaphragm 111 to generate sound, and an elastic member 113 electrically connected to the voice coil 112 and supporting the voice coil 112 on the frame 13.

In the above structure, the elastic member 113 is provided, so that the elastic member 113 balances the swing of the vibration system 2, thereby improving the stability of the sound generating device 100. In this embodiment, the elastic member 113 is fixed on a side of the voice coil 112 away from the diaphragm 111.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A sounding device comprises a sounding monomer and a front cover fixed on the sounding monomer, wherein the sounding monomer comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate and sound; the vibration system comprises a vibrating diaphragm used for vibrating and sounding, the front cover is arranged on one side, far away from the magnetic circuit system, of the vibrating diaphragm along the vibration direction, and the sound-sounding device is characterized by further comprising an outer sealing piece which is sleeved and fixed on the outer peripheral side of the front cover and is annular, and the sound-sounding unit is hermetically fixed with a shell of external equipment through the outer sealing piece.

2. The sounding device according to claim 1, further comprising an annular inner sealing member sandwiched and fixed between the sounding unit and the front cover along a direction perpendicular to the vibration direction of the diaphragm.

3. The sounding device according to claim 2, wherein the sounding unit further comprises a frame, the diaphragm and the magnetic circuit are fixed to two opposite sides of the frame along the vibration direction, respectively, and the front cover is disposed on a side of the frame close to the diaphragm.

4. The sounding device according to claim 3, wherein one side of the frame close to the vibrating diaphragm is recessed along the vibration direction to form a fixed step, and the front cover is connected with the peripheral side of the frame; the front cover comprises a front cover body part pressed on one side of the vibrating diaphragm, which is far away from the basin frame, a first through hole penetrating through the front cover body part, and a side wall extending from the front cover body part to the magnetic circuit system direction and abutting against the fixed step; the outer sealing piece is sleeved on the front cover body, and the inner sealing piece is clamped between the side wall and the basin frame along the direction perpendicular to the vibration direction.

5. The sounding device according to claim 4, wherein the fixed step is provided with a first annular recess recessed perpendicularly to the vibration direction, the outer periphery of the front cover body is recessed perpendicularly to the vibration direction to form a second annular recess, the inner periphery of the side wall is recessed perpendicularly to the vibration direction to form a third annular recess opposite to the second recess, the outer sealing member is received in the second recess and partially exposed from the second recess, and the inner sealing member is received in the first recess and the third recess by pressing.

6. The sounding device according to claim 5, wherein the diaphragm includes a vibrating portion, a second through hole penetrating through the vibrating portion, a dome attached to the vibrating portion and completely covering the second through hole, a folded ring portion extending from a periphery of the vibrating portion in an outward bending manner, and a fixing portion extending from a side of the folded ring portion away from the vibrating portion in a bending manner, and the fixing portion is sandwiched and fixed between the frame and the front cover body portion.

7. The sounder device according to claim 5, wherein the outer seal member comprises a first body portion received and secured in the second recess, and a first projection projecting from the first body portion in a direction away from the front cover body portion, the first projection being at least partially exposed in the second recess; the inner sealing piece is arranged around the fixed step and comprises a second main body part and a second boss, the second main body part is fixedly contained in the third sunken part, the second boss protrudes and extends in the direction away from the side wall from the second main body part, and the second boss is fixedly contained in the first sunken part.

8. The sounder device according to claim 2, wherein the outer seal and the inner seal are each made from a silicone material.

9. The sounder device according to claim 2, wherein the front cover, the outer seal, and the inner seal are integrally injection molded.