A vibrating film for a micro sounding device and a micro sounding device
A sounding device, a miniature technology, applied in the direction of flat diaphragm, diaphragm structure, sensor, etc., can solve the problems of small steric hindrance, poor temperature resistance, product film folding, etc., and achieve excellent acoustic performance and excellent structural stability. Effect
Active Publication Date: 2021-01-15
GOERTEK INC
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Problems solved by technology
For example, engineering plastics such as PEEK and PAR have good temperature resistance, but the material has poor resilience, and the product is prone to film folding, which cannot play a waterproof role.
Although the thermal stability and resilience of silicone rubber materials are good, but because of its symmetrical chemical structure, high tacticity, small steric hindrance of symmetrically substituted methyl groups, and relatively low modulus or hardness of silicone rubber, the material The damping property of the silicone rubber diaphragm is relatively 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 miniature sounding device
Method used
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[0025] 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.
[0026] 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.
[0027] 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.
[0028] 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 diaphragm used for a micro-sounding device and a micro-sounding device. The diaphragm is made of styrene-butadiene rubber, and the styrene-butadiene rubber uses polystyrene as the main monomer for polymerization and cross-linked monomer It is made by joint polymerization, the cross-linking monomer is polybutadiene, and the content of the polystyrene block in the polystyrene-butadiene rubber as the main polymer monomer is 10-45wt%; the diaphragm provided by the present invention has better Excellent structural stability, anti-polarization ability and low-frequency sensitivity; the miniature sound generating device provided by the invention has better acoustic performance.
Description
technical field [0001] The invention relates to the technical field of electronic products, and in particular, the invention relates to a diaphragm used for a miniature sound generating device and the miniature sound generating device. Background technique [0002] Existing diaphragms for micro-sounding devices mostly use multilayer composite materials, such as engineering plastics such as PEEK, PAR, PEI, and PI, elastomer materials such as TPU and TPEE, and adhesive films such as acrylic films and silicone films. In addition, silicone rubber has good thermal stability, good hydrophobicity and excellent rebound performance. With the improvement of high power, waterproof and high sound quality requirements, silicone rubber is also gradually used to make diaphragms. [0003] All of the above materials have their own disadvantages. For example, engineering plastics such as PEEK and PAR have good temperature resistance, but the material has poor resilience, and the product is p...
Claims
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IPC IPC(8): H04R7/10H04R7/04H04R9/06H04R9/02C08J5/18C08L9/06C08K13/06C08K3/06C08K3/04C08K3/36C08K3/26C08K3/30C08K3/34C08K5/098
CPCC08J5/18C08J2309/06C08K3/04C08K3/06C08K3/346C08K3/36C08K5/098C08K13/06C08K2003/265C08K2003/3045H04R7/04H04R7/10H04R9/02H04R9/06
Inventor 惠冰凌风光李春刘春发
Owner GOERTEK INC