Vibrating diaphragm for sound production device and sound production device

A sound generating device and vibration system technology, applied in the direction of sensors, electrical components, etc., can solve the problems of high total harmonic distortion THD, poor user experience, low diaphragm damping, etc., and achieve high fidelity without abnormal sound, listening Stable and less swaying vibration

Active Publication Date: 2021-10-08
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]Based on the above problems, the object of the present invention is to provide a vibrating membrane for a sounding device and a sounding device to solve the problem of low damping of the vibrating membrane and the use of The sounding device of the diaphragm has high total harmonic distortion THD, poor listening, and poor user experience, etc.

Method used

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  • Vibrating diaphragm for sound production device and sound production device
  • Vibrating diaphragm for sound production device and sound production device
  • Vibrating diaphragm for sound production device and sound production device

Examples

Experimental program
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Effect test

Embodiment 1

[0059] This embodiment is a low damping formula, completely using methyl phenyl silicone rubber as the base polymer, and the phenyl content in the methyl phenyl silicone rubber is 3%, with silica as filler, 2,5-di Methyl-2,5-di-tert-butylperoxyhexane is used as a crosslinking agent, and hydroxyvinyl silicone oil is used as a structure control agent. Specifically, in terms of mass fraction, according to methylphenyl silicone rubber 80%, silicon dioxide 15%, 2,5-dimethyl-2,5-di-tert-butylperoxyhexane 2%, hydroxyvinyl Silicone oil 3%, for batching.

[0060] Mix methylphenyl silicone rubber, silicon dioxide, and hydroxyvinyl silicone oil in an internal mixer at 100°C for 6 hours under reduced pressure to obtain a mixed rubber, which is cooled to room temperature for use; then, in the mixed rubber 2,5-Dimethyl-2,5-di-tert-butylperoxyhexane was added for mixing, and molded and vulcanized at 150° C. to obtain a diaphragm with a thickness of 130 μm.

[0061] After testing, the dampi...

Embodiment 2

[0063] This embodiment completely uses methyl vinyl silicone rubber and methyl phenyl silicone rubber with a phenyl content of 10% as the base polymer, uses silicon dioxide as a filler, and hydroxy vinyl silicone oil as a structure control agent. Silicone oil, acetylenic alcohol inhibitor and chloroplatinic acid alcohol solution were used as crosslinking agents. Wherein, the methyl vinyl silicone rubber is formed by copolymerization of dimethyl siloxane and a small amount of vinyl siloxane.

[0064] Specifically, in terms of mass fraction, 20% of methyl vinyl silicone rubber, 55% of methyl phenyl silicone rubber with a phenyl content of 10%, 20% of silicon dioxide, 2% of hydroxyvinyl silicone oil, and side hydrogen Silicone oil 2%, acetylenic alcohol inhibitor 0.5%, chloroplatinic acid alcohol solution 0.5%, batching.

[0065] Mix methylvinyl silicone rubber, methylphenyl silicone rubber, silicon dioxide, and hydroxyvinyl silicone oil in an internal mixer at 120°C for 5 hours...

Embodiment 3

[0068] In this embodiment, vinyl phenyl silicone rubber with a phenyl content of 30% is used as the base polymer, silica and mica are used as fillers, hydroxy silicone oil and hydroxy vinyl silicone oil are used as structure control agents, and hydrogen-containing silicone oil is used at the end. , acetylenic alcohol inhibitor and chloroplatinic acid alcohol solution as cross-linking agent.

[0069] Specifically, in terms of mass fraction, according to vinyl phenyl silicone rubber 60%, silicon dioxide 21%, mica 13%, hydroxy silicone oil 1%, hydroxyvinyl silicone oil 2%, end-side hydrogen silicone oil 2%, acetylenic alcohol Inhibitor 0.5%, chloroplatinic acid alcohol solution 0.5%, batching.

[0070] Vinyl phenyl silicone rubber, silica and mica, hydroxy silicone oil and hydroxy vinyl silicone oil were mixed in an internal mixer at 120°C for 6 hours under reduced pressure to obtain a mixed rubber, which was cooled to normal temperature for use; then, Add end-side hydrogen-cont...

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Abstract

The invention discloses a vibrating diaphragm for a sound production device and the sound production device. The vibrating diaphragm is obtained by adding a filler, a structure control agent and a cross-linking agent into a basic polymer, mixing, and molding at 80-200 DEG C, wherein the base polymer comprises one or more phenyl-containing siloxane polymers, and the content of phenyl in each phenyl-containing siloxane polymer is 0.5%-75% by weight; and the damping of the vibrating diaphragm is 0.1 to 0.6. Damping of the vibrating diaphragm can be improved, and distortion of the sound production device can be reduced.

Description

technical field [0001] The invention relates to the technical field of acoustic products, in particular to a vibrating membrane used for a sound generating device and a sound generating device. Background technique [0002] As we all know, traditional rubber materials such as methyl silicone rubber and vinyl silicone rubber are widely used in various industries because of their good high and low temperature performance, resilience performance and fatigue resistance, and low glass transition temperature. [0003] When traditional silicone rubber such as methyl silicone rubber and vinyl silicone rubber is used for the acoustic diaphragm, although it can improve the acoustic performance and reliability of the diaphragm at high temperature and high power, it can avoid problems such as membrane folding and rupture. However, on the one hand, because the main chain of silicone rubber is mainly Si-O-Si, and the side groups are mainly -CH 3 , regular structure, small steric hindranc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R31/00H04R9/02H04R9/04H04R9/06
CPCH04R31/003H04R9/02H04R9/025H04R9/04H04R9/045H04R9/06
Inventor 王海峰王婷李春
Owner GOERTEK INC
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