Diaphragm of sound production device and sound production device

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. ...

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

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