CN209824001U - Vibrating diaphragm and sound production device - Google Patents
Vibrating diaphragm and sound production device Download PDFInfo
- Publication number
- CN209824001U CN209824001U CN201822278788.9U CN201822278788U CN209824001U CN 209824001 U CN209824001 U CN 209824001U CN 201822278788 U CN201822278788 U CN 201822278788U CN 209824001 U CN209824001 U CN 209824001U
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- Prior art keywords
- diaphragm
- foam layer
- thickness
- rigid plastic
- edge
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Links
- 238000004519 manufacturing process Methods 0.000 title description 7
- 239000006260 foam Substances 0.000 claims abstract description 39
- 239000004005 microsphere Substances 0.000 claims abstract description 19
- 239000011159 matrix material Substances 0.000 claims abstract description 13
- 239000002985 plastic film Substances 0.000 claims description 24
- 229920006255 plastic film Polymers 0.000 claims description 24
- 229920000642 polymer Polymers 0.000 claims description 18
- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 229930195733 hydrocarbon Natural products 0.000 claims description 6
- 150000002430 hydrocarbons Chemical class 0.000 claims description 6
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- 239000004697 Polyetherimide Substances 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 31
- 238000005187 foaming Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 4
- 241001391944 Commicarpus scandens Species 0.000 description 3
- 229920001230 polyarylate Polymers 0.000 description 3
- 229920001601 polyetherimide Polymers 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The utility model provides a vibrating diaphragm, which comprises a folding ring; the edge comprises at least a foam layer comprising a matrix and expanded polymeric microspheres dispersed within the matrix. Compared with the prior art, the utility model discloses a vibrating diaphragm sensitivity is high and long service life.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an acoustoelectric field especially relates to an apply to vibrating diaphragm and sound production device of portable electronic product.
[ 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. A sound generating device for playing sound is widely applied to smart mobile devices such as current mobile phones.
The sound production device of the related art comprises a basin frame, a vibration system and a magnetic circuit, wherein the vibration system is fixed on the basin frame, the magnetic circuit drives the vibration system to vibrate and produce sound, and the vibration system comprises a vibrating diaphragm and a voice coil, the vibrating diaphragm is fixed on the basin frame, and the voice coil is driven to vibrate by the vibrating diaphragm.
However, in the related art, the diaphragm is of a solid structure, so that the weight of the diaphragm is large, the sensitivity of the diaphragm is limited, and the optimization of the high-frequency acoustic performance of the sound production device is limited.
Therefore, there is a need to provide a new diaphragm and a sound generating device to solve the above-mentioned problems.
[ Utility model ] content
An object of the utility model is to provide a high and long service life's of sensitivity vibrating diaphragm and sound production device.
In order to achieve the above object, the present invention provides a vibrating diaphragm, which comprises a folding ring, wherein the folding ring comprises a foam layer, and the foam layer comprises a base body and foamed polymer microspheres dispersed in the base body.
Preferably, the diaphragm includes a dome and the edge of the dome extends to form the corrugated rim.
Preferably, the polymer microspheres comprise hydrocarbon and a thermoplastic shell wrapping the hydrocarbon; the matrix is one of adhesive, rubber and thermoplastic elastomer.
Preferably, the polymeric microspheres have a diameter of between 10 microns and 300 microns.
Preferably, the polymeric microspheres have a diameter of between 20 microns and 200 microns.
Preferably, the folding ring further comprises rigid plastic films respectively attached to two opposite sides of the foam layer, and the rigid plastic films are at least one of PEEK films, PAR films and PEI films.
Preferably, the thickness of the foam layer is between 0.02 mm and 1 mm.
Preferably, the thickness of the foam layer is between 0.05 mm and 0.5 mm.
Preferably, the thickness of the folding ring is between 0.03 mm and 2 mm.
Preferably, the thickness of the folding ring is between 0.1 mm and 1 mm.
Preferably, the rigid plastic film has a thickness of between 0.002 mm and 0.5 mm.
Preferably, the rigid plastic film has a thickness of between 0.005 mm and 0.1 mm.
Preferably, the rigid plastic film and the foam layer are bonded and fixed through a high-molecular adhesive.
The utility model also provides a sounding device, which 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; the vibration system includes the utility model discloses a vibrating diaphragm.
Compared with the prior art, the folding ring of the vibrating diaphragm of the utility model at least comprises a foam layer, and the foam layer comprises a matrix and foaming polymer microspheres dispersed in the matrix; in the structure, the vibrating diaphragm is provided with the foaming structure through the arrangement of the foam layer, and compared with a solid structure, the foaming structure effectively reduces the weight of the vibrating diaphragm, so that the sensitivity of the vibrating diaphragm is improved; meanwhile, the polymer microspheres of the foam layer have excellent resilience performance, so that the vibrating diaphragm can bear long-time vibration and is not easy to break, and the service life of the vibrating diaphragm is long.
[ 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 structural diagram of a first embodiment of a diaphragm according to the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the diaphragm according to the present invention.
[ 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.
The utility model provides a vibrating diaphragm, the vibrating diaphragm includes the ball top and certainly roll over the ring that the ball top edge extended, at least roll over the ring and include the one deck foam blanket, the structure of ball top can be the same with rolling over the ring. In other preferred embodiments of the present invention, the diaphragm may only include the corrugated rim.
Specifically, the foam layer comprises a matrix and expanded polymer microspheres dispersed in the matrix; further, the polymer microspheres comprise hydrocarbon and a thermoplastic shell wrapping the hydrocarbon; the matrix is a thermoplastic material, and specifically is at least one of an adhesive, rubber and a thermoplastic elastomer.
In the structure, the polymer microspheres are used as a foaming agent of the foam layer, and the polymer microspheres expand under heating and foam forming at the temperature of 80-200 ℃, namely, the foam layer is formed into a foam structure. Through the arrangement of the foam layer, the vibrating diaphragm is provided with a foaming structure, and compared with a solid structure, the foaming structure effectively reduces the weight of the vibrating diaphragm, so that the sensitivity of the vibrating diaphragm is improved; meanwhile, the polymer microspheres of the foam layer have excellent resilience performance, so that the vibrating diaphragm can bear long-time vibration and is not easy to break, and the service life of the vibrating diaphragm is long.
It is worth mentioning that the diameter of the polymer microspheres is between 10 and 300 micrometers, preferably between 20 and 200 micrometers; the thickness of the foam layer is between 0.02 mm and 1 mm, preferably between 0.05 mm and 0.5 mm.
Implementation mode one
Referring to fig. 1, the diaphragm 10 includes the dome 11 and the edge 12, and the edge 12 is a single-layer structure, that is, the edge 12 includes only one layer of the foam layer 121.
In embodiment 1, the thickness of the edge 12 is directly determined by the thickness of the foam layer 121, that is, the thickness of the edge 12 having a single-layer structure is the same as the thickness of the foam layer 121; specifically, the thickness of the edge 12 is between 0.02 mm and 1 mm, and preferably between 0.05 mm and 0.5 mm.
Second embodiment
Referring to fig. 2, the diaphragm 10 ' includes the dome 11 and the edge 12 ', and the edge 12 ' includes the foam layer 121, and a rigid plastic film 122 and a rigid plastic film 123 respectively attached to two opposite sides of the foam layer 121.
In embodiment 2, the edge 12' has a three-layer structure formed by the foam layer 121, the rigid plastic film 122 and the rigid plastic film 123; the rigid plastic film 122 and the rigid plastic film 123 are respectively bonded and fixed with the foam layer 121 through a polymer adhesive. Of course, the manner of fixing the rigid plastic film to the foam layer is not limited thereto.
Specifically, the rigid plastic film 122 and the rigid plastic film 123 are made of rigid plastic, which is at least one of a Polyetheretherketone (PEEK) film, a Polyarylate (PAR) film, or a Polyetherimide (PEI) film. Compared with a single-layer structure, the rigidity of the edge 12 'is increased by the arrangement of the rigid plastic film 122 and the rigid plastic film 123, so that the vibration stability of the diaphragm 10' is further improved.
It is worth mentioning that the thickness of the edge 12' is determined by the thickness of the foam layer 121 and the thickness of the rigid plastic film 122 and the rigid plastic film 123; the thickness of the rigid plastic film is between 0.002 mm and 0.5 mm, preferably between 0.005 mm and 0.1 mm; the thickness of the edge 12' is between 0.03 mm and 2 mm, preferably between 0.1 mm and 1 mm.
The utility model also provides a sounding device (not shown in the figure), which 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; the vibration system includes the utility model discloses a vibrating diaphragm.
Compared with the prior art, the folding ring of the vibrating diaphragm of the utility model at least comprises a foam layer, and the foam layer comprises a matrix and foaming polymer microspheres dispersed in the matrix; in the structure, the vibrating diaphragm is provided with the foaming structure through the arrangement of the foam layer, and compared with a solid structure, the foaming structure effectively reduces the weight of the vibrating diaphragm, so that the sensitivity of the vibrating diaphragm is improved; meanwhile, the polymer microspheres of the foam layer have excellent resilience performance, so that the vibrating diaphragm can bear long-time vibration and is not easy to break, and the service life of the vibrating diaphragm is long.
The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.
Claims (14)
1. A diaphragm comprises a corrugated rim, and is characterized in that the corrugated rim comprises a foam layer, and the foam layer comprises a matrix and foamed polymer microspheres dispersed in the matrix.
2. The diaphragm of claim 1, wherein the diaphragm includes a dome and the edge of the dome extends from the edge of the dome.
3. The diaphragm of claim 1 or 2, wherein the polymer microspheres comprise a hydrocarbon and a thermoplastic shell wrapping the hydrocarbon; the matrix is one of adhesive, rubber and thermoplastic elastomer.
4. The diaphragm of claim 3 wherein the polymer microspheres have a diameter of between 10 and 300 microns.
5. The diaphragm of claim 4 wherein the polymer microspheres have a diameter of between 20 microns and 200 microns.
6. The diaphragm of claim 1 or 2, wherein the edge further includes rigid plastic films attached to opposite sides of the foam layer, and the rigid plastic films are at least one of a PEEK film, a PAR film, and a PEI film.
7. The diaphragm of claim 6 wherein the thickness of the foam layer is between 0.02 mm and 1 mm.
8. The diaphragm of claim 7 wherein the thickness of the foam layer is between 0.05 mm and 0.5 mm.
9. The diaphragm of claim 8, wherein the thickness of the edge is between 0.03 mm and 2 mm.
10. The diaphragm of claim 9, wherein the thickness of the edge is between 0.1 mm and 1 mm.
11. The diaphragm of claim 6 wherein the rigid plastic film has a thickness of between 0.002 mm and 0.5 mm.
12. The diaphragm of claim 11 wherein the rigid plastic film has a thickness of between 0.005 mm and 0.1 mm.
13. The diaphragm of claim 6, wherein the rigid plastic film and the foam layer are bonded and fixed by a polymer adhesive.
14. A sound-producing device comprising a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound, wherein the vibration system comprises a diaphragm according to any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822278788.9U CN209824001U (en) | 2018-12-30 | 2018-12-30 | Vibrating diaphragm and sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822278788.9U CN209824001U (en) | 2018-12-30 | 2018-12-30 | Vibrating diaphragm and sound production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209824001U true CN209824001U (en) | 2019-12-20 |
Family
ID=68870500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822278788.9U Active CN209824001U (en) | 2018-12-30 | 2018-12-30 | Vibrating diaphragm and sound production device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209824001U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116065403A (en) * | 2021-10-29 | 2023-05-05 | 歌尔股份有限公司 | Vibrating diaphragm of sound generating device, manufacturing method of vibrating diaphragm and sound generating device |
-
2018
- 2018-12-30 CN CN201822278788.9U patent/CN209824001U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116065403A (en) * | 2021-10-29 | 2023-05-05 | 歌尔股份有限公司 | Vibrating diaphragm of sound generating device, manufacturing method of vibrating diaphragm and sound generating device |
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