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Sound production device diaphragm and sound production device

A sounding device and rubber membrane technology, applied in the field of acoustic devices, can solve the problems of poor comprehensive performance of the diaphragm, low material damping, low modulus or hardness of silicone rubber, etc., and achieve excellent high temperature resistance, good comprehensive performance, excellent reliability effect

Inactive Publication Date: 2020-02-21
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although the thermal stability and resilience of silicone rubber materials are relatively good, because of their symmetrical chemical structure, high tacticity, and small steric hindrance of symmetrically substituted methyl groups, the modulus or hardness of silicone rubber is relatively low. Under the premise of meeting the same F0 requirements, the damping property of the material is low, resulting in a large distortion of the product of the silicone rubber diaphragm
[0004] It can be seen that the overall performance of the above-mentioned diaphragm is poor and cannot meet the overall performance requirements of the sounding device

Method used

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  • Sound production device diaphragm and sound production device
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  • Sound production device diaphragm and sound production device

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Embodiment Construction

[0039] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0040] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0041] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0042] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a sound production device diaphragm and a sound production device. The diaphragm comprises at least one elastomer layer, wherein the elastomer layer is made of ethylene-vinyl acetate rubber; and the ethylene-vinyl acetate rubber is formed by copolymerizing ethylene and vinyl acetate, and the vinyl acetate accounts for 30-90% of the total amount of the ethylene-vinyl acetaterubber. The diaphragm has good acoustic performances.

Description

technical field [0001] The invention relates to the technical field of acoustic devices, and in particular, the invention relates to a diaphragm of a sound generating device and the sound generating device. Background technique [0002] Most of the existing sounding device diaphragms use high-modulus plastic film layers (such as: PEEK, PAR, PEI, PI, etc.), relatively soft thermoplastic polyurethane elastomers (such as: TPU) and damping films (such as: acrylic glue , silica gel, etc.) composite structure. However, the existing vibrating membrane has poor overall performance, such as low elastic recovery rate, poor high temperature resistance and aging resistance, which may easily cause poor hearing and make the acoustic performance of the sounding device poor. [0003] Silicone rubber materials have good thermal stability, good hydrophobic properties and excellent resilience properties. Nowadays, with the improvement of high power, waterproof and high sound quality requirem...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08K13/02C08K13/04C08K3/04C08K7/26C08K3/22C08K3/34C08K3/26C08K3/30C08K5/14C08J5/18B32B25/04G10K13/00
CPCC08J5/18B32B25/042G10K13/00C08J2323/08C08K13/02C08K13/04C08K3/04C08K7/26C08K2003/2241C08K3/34C08K2003/265C08K2003/3045C08K2201/011C08K5/14C08K3/22H04R1/10H04R7/00H04R2307/021H04R2307/025C08K5/0025C08K5/40C08K5/005C08K5/0016C08L9/00H04R7/04G10K9/00B32B25/16B32B25/02H04R7/02H04R31/003H04R2307/023
Inventor 彭威锋凌风光李春刘春发
Owner GOERTEK INC
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