CN221151563U - Acoustic diaphragm and loudspeaker comprising same - Google Patents
Acoustic diaphragm and loudspeaker comprising same Download PDFInfo
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- CN221151563U CN221151563U CN202322870797.8U CN202322870797U CN221151563U CN 221151563 U CN221151563 U CN 221151563U CN 202322870797 U CN202322870797 U CN 202322870797U CN 221151563 U CN221151563 U CN 221151563U
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- film layer
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- acoustic diaphragm
- peek
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- 239000002131 composite material Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000002952 polymeric resin Substances 0.000 claims abstract description 13
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 191
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 34
- 229920002530 polyetherether ketone Polymers 0.000 claims description 34
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 32
- 238000013016 damping Methods 0.000 claims description 29
- 239000012790 adhesive layer Substances 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000005060 rubber Substances 0.000 claims description 5
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical group OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims 8
- 239000010408 film Substances 0.000 description 136
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 24
- 238000010586 diagram Methods 0.000 description 6
- 239000010409 thin film Substances 0.000 description 5
- 239000004642 Polyimide Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 238000013329 compounding Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011112 polyethylene naphthalate Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical class C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000009823 thermal lamination Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The embodiment of the application relates to the technical field of acoustic diaphragms, in particular to an acoustic diaphragm and a loudspeaker comprising the same. In the embodiment of the application, the first composite film layer and the second composite film layer of the acoustic diaphragm comprise a first film layer and a second film layer, and the first film layer and the second film layer are polymer resin film layers made of different materials, so that the first composite film layer and the second composite film layer can integrate the performance advantages of the polymer resin film layers made of a plurality of different materials. Compared with an acoustic diaphragm comprising a single material film layer, the embodiment of the application can improve the comprehensive performance of the acoustic diaphragm by arranging a plurality of polymer resin film layers with different materials.
Description
Technical Field
The embodiment of the application relates to the technical field of acoustic diaphragms, in particular to an acoustic diaphragm and a loudspeaker comprising the same.
Background
The loudspeaker is an electronic element for converting electric energy into mechanical acoustic energy, and is widely applied to electronic equipment such as mobile phones, computers, televisions, automobiles and the like. Speaker systems are typically composed of an acoustic diaphragm, a damper, a permanent magnet, a housing, and other components, wherein the acoustic diaphragm has the greatest sound for the sound quality shadow of the speaker system. In the prior art, an acoustic diaphragm generally only comprises a thin film material layer made of a single material, and the comprehensive performance of the acoustic diaphragm needs to be improved.
Disclosure of Invention
The embodiment of the application provides an acoustic vibrating diaphragm and a loudspeaker comprising the same, which can improve the comprehensive performance of the acoustic vibrating diaphragm by arranging polymer resin film layers with various different materials.
In a first aspect of the present application, there is provided an acoustic diaphragm comprising a first composite film layer, an acoustic damping gel layer and a second composite film layer, which are sequentially arranged; the first composite film layer and the second composite film layer comprise a first film layer and a second film layer, and the first film layer and the second film layer are polymer resin film layers made of different materials.
In the embodiment of the application, the first composite film layer and the second composite film layer of the acoustic diaphragm comprise a first film layer and a second film layer, and the first film layer and the second film layer are polymer resin film layers made of different materials, so that the first composite film layer and the second composite film layer can integrate the performance advantages of the polymer resin film layers made of a plurality of different materials. Compared with an acoustic diaphragm comprising a single material film layer, the embodiment of the application can improve the comprehensive performance of the acoustic diaphragm by arranging a plurality of polymer resin film layers with different materials.
In some embodiments, the first film layer is a PEEK film layer, a PI film layer, or a PEN film layer.
In some embodiments, the first film layer has a thickness of 3 μm to 25 μm.
In some embodiments, the second film layer is a TPU film layer, a SEBS film layer, or a rubber film layer.
In some embodiments, the second film layer has a thickness of 5 μm to 50 μm.
In some embodiments, the acoustic damping gel layer is an acrylate gel layer, a polyurethane gel layer, or a silicone gel layer.
In some embodiments, the acoustic damping gel layer has a thickness of 5 μm to 50 μm.
In some embodiments, the first film layer is a PEEK film layer and the second film layer is a TPU film layer.
In some embodiments, the acoustic diaphragm comprises, in order: a TPU film layer, a PEEK film layer, an acoustic damping adhesive layer, a TPU film layer and a PEEK film layer; or the acoustic diaphragm sequentially comprises: a TPU film layer, a PEEK film layer, an acoustic damping adhesive layer, a PEEK film layer and a TPU film layer; or the acoustic diaphragm sequentially comprises: PEEK film layer, TPU film layer, acoustic damping glue film, TPU film layer, PEEK film layer.
In a second aspect of the application, there is also provided a loudspeaker comprising an acoustic diaphragm as described in the first aspect.
It should be understood that the description of the application in this section is not intended to limit the key or essential features of the application, nor is it intended to limit the scope of the application. Other features of the present application will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments of the present invention will be briefly described below. It is evident that the drawings described below are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of an acoustic diaphragm provided in some embodiments of the present application;
FIG. 2 is a schematic illustration of the structure of a first composite film layer provided in accordance with some implementations of the application;
FIG. 3 is a schematic illustration of the structure of a second composite film layer provided in accordance with some implementations of the application;
FIG. 4 is a schematic diagram of an acoustic diaphragm provided by some embodiments of the present application;
FIG. 5 is a schematic diagram of an acoustic diaphragm provided by some embodiments of the present application;
FIG. 6 is a schematic diagram of an acoustic diaphragm provided by some embodiments of the present application;
Fig. 7 is a schematic structural diagram of a speaker provided in some embodiments of the application.
Detailed Description
The principles and spirit of the present disclosure will be described below with reference to several exemplary embodiments shown in the drawings. It should be understood that these specific embodiments are described merely to enable those skilled in the art to better understand and practice the present disclosure and are not intended to limit the scope of the present disclosure in any way. In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art.
As used herein, the term "comprising" and the like should be understood to be open-ended, i.e., including, but not limited to. The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The terms "first," "second," and the like, may refer to different or the same object and are used solely to distinguish one from another without implying a particular spatial order, temporal order, or order of importance of the objects so referred to.
Illustratively, fig. 1 shows a structure of an acoustic diaphragm according to the present application, and as shown in fig. 1, an acoustic diaphragm 100 includes a first composite film layer 110, an acoustic damping gel layer 120, and a second composite film layer 130, which are sequentially disposed. The first composite film layer 110 and the second composite film layer 130 are composite films formed by closely adhering two polymer resin film layers of different materials together by a thermal compounding technique; the damping gel layer is an acoustic damping gel having ultra-high damping characteristics and low fundamental frequency (F0) characteristics.
Specifically, as shown in fig. 3 and 4, in some embodiments, the first composite film layer 110 includes a first film layer 111 and a second film layer 112; the second composite film layer 130 includes a first film layer 131 and a second film layer 132; the first thin film layer 111 and the first thin film layer 131 are the same in material and thickness, and the second thin film layer 112 and the second thin film layer 132 are the same in material and thickness.
In the embodiment of the present application, the first composite film layer 110 and the second composite film layer 130 of the acoustic diaphragm 100 each include a first film layer and a second film layer, and the first film layer and the second film layer are polymer resin film layers made of different materials, so that the first composite film layer 110 and the second composite film layer 130 can integrate the performance advantages of polymer resin film layers made of a plurality of different materials. Compared with an acoustic diaphragm comprising a single material film layer, the embodiment of the application can improve the comprehensive performance of the acoustic diaphragm by arranging a plurality of polymer resin film layers with different materials.
In some embodiments, the first film layer 111 may be disposed away from the acoustic damping gel layer 120 relative to the second film layer 112; in other embodiments, the first film layer 111 may also be disposed proximate to the acoustic damping gel layer 120 relative to the second film layer 112. In some embodiments, the first film layer 131 may be disposed away from the acoustic damping gel layer 120 relative to the second film layer 132; in other embodiments, the first membrane layer 131 may also be disposed proximate to the acoustic damping gel layer 120 relative to the second membrane layer 132.
In some embodiments, the first film layer 111 and the first film layer 131 are Polyetheretherketone (PEEK) film layers, polyimide (PI) film layers, or polyethylene naphthalate (PEN) film layers, and the first film layer 111 and the first film layer 131 have a thickness of 3 μm to 25 μm.
In some embodiments, the second film layer 112 and the second film layer 132 are thermoplastic polyurethane elastomer (TPU) film layers, hydrogenated styrene-butadiene block copolymer (SEBS) film layers, or rubber film layers, and the second film layer 112 and the second film layer 132 have a thickness of 5 μm to 50 μm. The TPU film layer, the SEBS film layer and the rubber film layer have excellent rebound resilience, and can improve rebound deformation performance of the acoustic diaphragm.
In some embodiments, in order for the acoustic diaphragm to have high damping characteristics and low F0 characteristics, the acoustic damping gel layer 120 is an acrylate gel layer, a polyurethane gel layer, or a silicone gel layer. Specifically, in some embodiments, the acoustic damping gel layer 120 has a thickness of 5 μm to 50 μm.
In some embodiments, the first film layer 111 and the first film layer 131 are PEEK film layers and the second film layer 112 and the second film layer 132 are TPU film layers. The PEEK film material has very high temperature resistance and rigidity, but with the increase of vibration frequency, a single PEEK film material is easy to break at high frequency, so that the development of an acoustic diaphragm is seriously hindered. Meanwhile, thermoplastic elastomer films such as TPU film layer, SEBS film layer, rubber film layer, and the like have excellent rebound resilience but poor temperature resistance. In the embodiment, the TPU film and the PEEK film are used in a compounding mode, so that the breaking elongation and the tensile strength of the PEEK film are improved, and the film breaking phenomenon is not easy to occur even if the PEEK film vibrates at high frequency.
In this embodiment, the TPU and PEEK composite film layers (i.e., the first composite film layer 110 and the second composite film layer 130) not only have the unique stiffness of the PEEK film, but also have the high resiliency of the TPU film. Meanwhile, the acoustic damping adhesive 120 is used as an intermediate adhesive body of the TPU film layer and the PEEK film layer to manufacture the composite acoustic vibrating diaphragm, so that the comprehensive performance of the acoustic vibrating diaphragm is greatly improved. In some embodiments, the PEEK film layer and the TPU film layer are bonded together by a thermal lamination technique without any adhesive in between.
Referring to fig. 4, in some embodiments, the acoustic diaphragm 400 sequentially includes: the sound damping layer comprises a TPU film layer, a PEEK film layer, an acoustic damping adhesive layer, a TPU film layer and a PEEK film layer; referring to fig. 5, in other embodiments, the acoustic diaphragm 500 sequentially includes: the sound damping layer comprises a TPU film layer, a PEEK film layer, an acoustic damping adhesive layer, a PEEK film layer and a TPU film layer; referring to fig. 6, in other embodiments, an acoustic diaphragm 600 sequentially includes: PEEK film layer, TPU film layer, acoustic damping glue layer, TPU film layer and PEEK film layer.
An embodiment of the present application further provides a speaker, and, for example, fig. 7 shows a schematic structural diagram of a speaker 700, as shown in fig. 7, where the speaker 700 includes an acoustic diaphragm 710, and the acoustic diaphragm 710 is an acoustic diaphragm provided in any one of the embodiments, for example, the acoustic diaphragms in fig. 1 and fig. 4-6.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. The acoustic vibrating diaphragm is characterized by comprising a first composite film layer, an acoustic damping adhesive layer and a second composite film layer which are sequentially arranged;
The first composite film layer and the second composite film layer comprise a first film layer and a second film layer, and the first film layer and the second film layer are polymer resin film layers made of different materials.
2. The acoustic diaphragm of claim 1 wherein the first film layer is a PEEK film layer, a PI film layer, or a PEN film layer.
3. The acoustic diaphragm of claim 2 wherein the first film layer has a thickness of 3 μm to 25 μm.
4. The acoustic diaphragm of claim 1 wherein the second film layer is a TPU film layer, a SEBS film layer, or a rubber film layer.
5. The acoustic diaphragm of claim 2 wherein the second film layer has a thickness of 5 μm to 50 μm.
6. The acoustic diaphragm of claim 1, wherein the acoustic damping gel layer is an acrylate gel layer, a polyurethane gel layer, or a silicone gel layer.
7. The acoustic diaphragm of claim 6 wherein the acoustic damping gel layer has a thickness of 5 μm to 50 μm.
8. The acoustic diaphragm of claim 1 wherein the first film layer is a PEEK film layer and the second film layer is a TPU film layer.
9. The acoustic diaphragm of claim 8, wherein the acoustic diaphragm comprises, in order: a TPU film layer, a PEEK film layer, an acoustic damping adhesive layer, a TPU film layer and a PEEK film layer; or alternatively
The acoustic diaphragm comprises, in order: a TPU film layer, a PEEK film layer, an acoustic damping adhesive layer, a PEEK film layer and a TPU film layer; or alternatively
The acoustic diaphragm comprises, in order: PEEK film layer, TPU film layer, acoustic damping glue film, TPU film layer, PEEK film layer.
10. A loudspeaker comprising an acoustic diaphragm as claimed in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322870797.8U CN221151563U (en) | 2023-10-24 | 2023-10-24 | Acoustic diaphragm and loudspeaker comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322870797.8U CN221151563U (en) | 2023-10-24 | 2023-10-24 | Acoustic diaphragm and loudspeaker comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221151563U true CN221151563U (en) | 2024-06-14 |
Family
ID=91424704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322870797.8U Active CN221151563U (en) | 2023-10-24 | 2023-10-24 | Acoustic diaphragm and loudspeaker comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221151563U (en) |
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2023
- 2023-10-24 CN CN202322870797.8U patent/CN221151563U/en active Active
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