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Diaphragm of sound production device and sound production device

A sounding device and rubber mixing technology, applied in sensors, electrical components, etc., can solve the problems of small steric hindrance, poor heat and cold resistance of thermoplastic resin, large product distortion, etc., to improve production efficiency and good overall performance. , good molding consistency

Active Publication Date: 2020-10-30
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the process of realizing the embodiment of the present application, the inventors of the present application found that the above-mentioned technology has at least the following technical problems: the use of high-modulus plastics cannot meet the high-power requirements of the 5G era because of its lightness and thinness. It is difficult to withstand large mechanical vibrations under high temperature conditions, resulting in membrane rupture; thermoplastic resins have poor heat and cold resistance, plastic deformation occurs at high temperatures, and become brittle at low temperatures; silicone rubber is used, although its thermal stability and resilience are poor. It is better, 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, it will cause damping of the material under the premise of meeting the same F0 requirements. Low performance, resulting in larger distortion of silicone rubber diaphragm products
It can be seen that the overall performance of the above-mentioned diaphragms is relatively poor, and cannot meet the overall performance requirements of the sounding device

Method used

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  • Diaphragm of sound production device and sound production device
  • Diaphragm of sound production device and sound production device
  • Diaphragm of sound production device and sound production device

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0052] In the present invention, the preparation method of the diaphragm of the sounding device includes the following steps: kneading raw materials containing raw rubber and filler reinforcing agent to obtain a kneaded rubber; Get the diaphragm.

[0053] The present invention also provides a sound-generating device, which includes a magnetic circuit system and a vibration system that cooperate with each other, and the vibration system includes the above-mentioned vibration film.

Embodiment 1

[0056] A vibrating membrane of a sounding device, the vibrating membrane comprises a layer of elastomer layer, wherein the elastomer layer is made of mixed rubber; the mixed rubber is made of raw rubber, filler reinforcing agent, vulcanizing agent and the raw material of the vulcanization accelerator is obtained by kneading, wherein the raw rubber includes polysulfide rubber, and the particle size of the filler and reinforcing agent is 10 nm.

[0057] The filler and reinforcing agent is carbon black; the content of the filler and reinforcing agent is 5% of the total amount of the mixed rubber.

[0058] The vulcanizing agent adopts sulfur, and the vulcanization accelerator adopts thiuram polysulfide; the content of the vulcanizing agent and the vulcanization accelerator is 0.5% of the total amount of the mixed rubber.

Embodiment 2

[0060] Based on Example 1, the only difference is that the particle size of the filler reinforcing agent described in Example 2 is 4 μm.

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Abstract

The invention discloses a diaphragm of a sound production device and the sound production device. The diaphragm comprises at least one elastomer layer, and the elastomer layer is made of a rubber compound; the rubber compound is obtained by mixing raw materials containing raw rubber and a filler reinforcing agent, the raw rubber comprises polysulfide rubber, and the particle size of the filler reinforcing agent is 10 nm to 10 mum. The obtained diaphragm is good in comprehensive performance, can normally work under high and low temperature extreme conditions, can keep good rigidity, rebound resilience and damping performance, is low in distortion, and restores sound essence.

Description

technical field [0001] The present invention relates to the technical field of acoustic devices, and in particular, the present invention relates to a diaphragm of a sound-generating device and a sound-generating device. Background technique [0002] With the rapid development of the 5G era, electro-acoustic devices are gradually developing in the direction of thinness, intelligence, high power and high frequency. Consumers require more and more power, sound quality and performance. Stable and wider frequency response, which requires electroacoustic devices to develop in the direction of thinning, miniaturization and high power. The diaphragm is a very important part of the speaker, and its performance directly affects the acoustic performance of the speaker product. [0003] The materials used for the diaphragm of the existing sound generator mainly include high modulus plastics (such as PEEK, PAR, PEI, PI, etc.), thermoplastic resins (such as TPU) and silicone rubber. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R31/00
CPCH04R31/003
Inventor 王翠翠惠冰凌风光李春
Owner GOERTEK INC
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