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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., to 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 and a sounding device for a sounding device to solve the problem of low damping of the traditional silicone rubber diaphragm, high total harmonic distortion THD of the sounding device using the vibrating film, and poor listening ability. Poor, 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
Comparison scheme
Effect test

Embodiment 1

[0082] Polydimethylsiloxane is used as the base polymer, silica is used as the filler, the above-mentioned first modified polysiloxane is added as the damping additive, and hydroxyvinyl silicone oil and hydroxy silicone oil are used as the structure control agent , using 2,5-dimethyl-2,5-di-tert-butylperoxyhexane as a crosslinking agent. Specifically, in terms of mass percentage, according to polydimethylsiloxane 80%, silicon dioxide 9%, damping additive 3%, hydroxyvinyl silicone oil 3%, hydroxy silicone oil 3%, 2,5-dimethyl- 2,5-di-tert-butylperoxyhexane 2%, for batching.

[0083] Mix the basic polymer, filler, structure control agent, and damping additive 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 add a crosslinking agent to the mixed rubber Perform kneading and vulcanization molding at 150° C. to obtain a diaphragm with a thickness of 120 μm.

[0084] After testing, the Shore...

Embodiment 2

[0087] Methyl vinyl polysiloxane is used as the base polymer, silicon dioxide is used as the filler, the above-mentioned first modified polysiloxane is added as the damping additive, and hydroxyvinyl silicone oil is used as the structure control agent. Hydrogen silicone oil, acetylenic alcohol inhibitor and alcohol solution of chloroplatinic acid are used as crosslinking agent. Specifically, in terms of mass percentage, 75% of methyl vinyl polysiloxane, 10% of silicon dioxide, 10% of damping additive, 2% of hydroxyvinyl silicone oil, 2.5% of end-side hydrogen silicone oil and propargyl alcohol inhibitor %, 0.5% alcohol solution of chloroplatinic acid for batching.

[0088] Mix the basic polymer, filler, structure control agent, and damping additive in an internal mixer under reduced pressure at 150°C to obtain a mixed rubber, which is cooled to room temperature for use; then add a crosslinking agent to the mixed rubber for mixing Refined and vulcanized at 180°C to obtain a di...

Embodiment 3

[0092] Methyl vinyl polysiloxane is used as the base polymer, silica is used as the filler, the above-mentioned third modified polysiloxane is added as the damping additive, and hydroxy vinyl silicone oil and hydroxy silicone oil are used as the structure control agent, the alcohol solution containing hydrogen silicone oil, acetylenic alcohol inhibitor and chloroplatinic acid is used as the crosslinking agent. Specifically, in terms of mass percentage, according to methyl vinyl polysiloxane 60%, silicon dioxide 19%, damping additive 15%, hydroxy vinyl silicone oil 2%, hydroxy silicone oil 1%, hydrogen-containing silicone oil and acetylenic alcohol inhibitor A total of 2.5% of the agent and 0.5% of the alcohol solution of chloroplatinic acid were used for batching.

[0093] Mix the basic polymer, filler, structure control agent, and damping additive in an internal mixer under reduced pressure at 120°C to obtain a mixed rubber, which is cooled to room temperature for use; then a...

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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 damping additive, a filler, a structure control agent and a cross-linking agent into a basic polymer, mixing and molding at 80-200 DEG C. The damping additive is selected from one or more of polysiloxane, and the main chain of the polysiloxane has a structure as shown in an average composition formula 1. By adding the damping additive, the vibration diaphragm damping can be improved, and the 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] At present, the materials for preparing the diaphragm of the sounding device include elastic materials such as plastics and thermoplastic resins; among them, silicone rubber has good high and low temperature performance, resilience and fatigue resistance, and has a low glass transition temperature. widely used in the process. [0003] Acoustic diaphragms prepared from traditional silicone rubber, such as methyl silicone rubber and vinyl silicone rubber, can improve the acoustic performance and reliability of the diaphragm at high temperature and high power, and avoid problems such as membrane folding and rupture; However, on the one hand, the traditional silicone rubber is mainly composed of Si-O-Si in the main chain, and the side group is mainly -CH 3 ...

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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