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Vibrating diaphragm of sound production device and sound production device

A sounding device and polymer film technology, applied in the direction of planar diaphragm, diaphragm extension, polymer material diaphragm, etc., can solve the problems of poor damping performance, high distortion, low modulus or hardness, etc., and achieve good resilience Effect

Active Publication Date: 2019-09-20
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the modulus or hardness of silicone rubber is relatively low, and under the premise of meeting the same F0 requirements, its damping performance is poor and distortion is high

Method used

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  • Vibrating diaphragm of sound production device and sound production device
  • Vibrating diaphragm of sound production device and sound production device
  • Vibrating diaphragm of sound production device and sound production device

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Embodiment Construction

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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 vibrating diaphragm of a sound production device and the sound production device, the vibrating diaphragm comprises at least one elastomer layer, the elastomer layer is made of a hydrogenated butyronitrile polymer, the hydrogenated butyronitrile polymer comprises an acrylonitrile block, and the content range of the acrylonitrile block in the hydrogenated butyronitrile polymer is 10-70 wt%, the hydrogenated butyronitrile polymer is added with a vulcanizing agent, and the content of the vulcanizing agent is 1%-15% of the total amount of the hydrogenated butyronitrile polymer. The vibrating diaphragm is good in rebound resilience, can keep high elasticity in a low-temperature environment, and can work for a long time in a high-temperature environment, so that the sound production device can be applied to an extremely severe environment, and meanwhile, the acoustic performance of the sound production device is kept in a good state.

Description

technical field [0001] The invention relates to the field of electroacoustic conversion, in particular to a diaphragm of a sound generating device and the sound generating device. Background technique [0002] Existing sounding device diaphragms mostly use high modulus plastic film layers (PEEK, PAR, PEI, PI, etc.), soft thermoplastic polyurethane elastomer (TPU) and damping film (acrylic glue, silica gel, etc.) composite structure. [0003] However, the comprehensive performance of the existing diaphragm is relatively poor, such as low elastic recovery rate and poor heat resistance, which may easily cause poor listening and make the acoustic performance of the sounding device poor. [0004] With the improvement of high power, waterproof and high sound quality requirements, the diaphragm made of silicone rubber has also been applied in the field of sound generating devices. However, the modulus or hardness of silicone rubber is relatively low, and under the premise of meeti...

Claims

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Application Information

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IPC IPC(8): H04R7/14
CPCH04R7/14H04R2207/021H04R7/02H04R7/06H04R7/04H04R7/12H04R7/122H04R2307/025C08K3/04C08K3/06C08K5/14C08K5/005C08L15/005C08J3/24C08J2315/00C08L2312/00C08J5/18C08L15/02
Inventor 惠冰王述强凌风光李春刘春发
Owner GOERTEK INC
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