A diaphragm for a micro-sounding device and a micro-sounding device
A sounding device, miniature technology, applied in the direction of plane diaphragm, polymer material diaphragm, non-planar diaphragm/paper cone, etc., can solve the problems of small space resistance, poor temperature resistance, large product distortion, etc., and achieve excellent acoustics Performance, the effect of excellent structural stability
Active Publication Date: 2021-03-09
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, due to their symmetrical chemical structure, high structural regularity, and small steric hindrance of symmetrically substituted methyl groups, the modulus or hardness of silicone rubber is relatively low, resulting in the Low damping, resulting in greater distortion of products with silicone rubber diaphragms
[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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[0026] 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.
[0027] 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.
[0028] 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.
[0029] 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 membrane for a miniature sounding device and a miniature sounding device. The vibrating membrane is made of polyether rubber, and the polyether rubber includes propylene oxide rubber, chloroether rubber and copolyether rubber At least one of the above, the glass transition temperature range of the diaphragm is -55-0°C, and when the constant elongation of the diaphragm is 20%, the elastic recovery rate of the diaphragm is greater than 85%; The diaphragm provided by the invention has better 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): H04R7/04H04R7/06H04R7/12H04R9/02H04R9/06
CPCH04R7/04H04R7/06H04R7/12H04R7/125H04R9/02H04R9/06H04R2231/00H04R2231/003H04R2307/025
Inventor 惠冰凌风光李春刘春发
Owner GOERTEK INC