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Vibrating diaphragm of sound production device, and sound production device thereof

A sounding device and rubber membrane technology, applied in the field of electroacoustics, can solve the problems of high distortion, poor damping performance, low modulus or hardness, etc., and achieve the effects of reducing distortion, improving damping performance and reducing polarization

Pending Publication Date: 2021-12-10
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modulus or hardness of silicone rubber is relatively low. When meeting the same F0 (resonance frequency) as other types of diaphragm materials, its damping performance is poor and distortion is high, which is difficult to meet the actual use needs of speakers.

Method used

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  • Vibrating diaphragm of sound production device, and sound production device thereof
  • Vibrating diaphragm of sound production device, and sound production device thereof
  • Vibrating diaphragm of sound production device, and sound production device thereof

Examples

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Effect test

preparation example Construction

[0072] According to an embodiment of the present invention, there is also provided a method for preparing a diaphragm of a sounding device, including the following steps: S1. Blending and modifying polydimethylsiloxane and polyhedral polysilsesquioxane to form a co- mixed polymers. S2. Cross-linking and molding the blended polymer to form a vibrating membrane.

[0073] Therefore, high damping silicone rubber can be formed by blending polydimethylsiloxane and polyhedral polysilsesquioxane and carrying out crosslinking reaction. At room temperature, high damping silicone rubber is in a high elastic state, and the molecular chain is relatively It is easy to move, has high internal friction resistance between molecules, and has excellent damping performance. Furthermore, the modified silicone rubber film layer of the vibrating membrane can be prepared by using high damping silicone rubber as the raw material, which can not only meet the requirements of high power, waterproof perf...

Embodiment 1

[0085] Blend POSS (polyhedral polysilsesquioxane) and polydimethylsiloxane to form a blend polymer, POSS accounts for 0.5wt% of the blend polymer, form a diaphragm material after cross-linking reaction, and assemble into a product .

[0086] The polydimethylsiloxane formula is as follows:

[0087] In parts by mass, 100 parts of polydimethylsiloxane; 15 to 50 parts of white carbon black; 0.3 to 1 part of siloxane coupling agent; 0.5 to 2 parts of vulcanizing agent; 0.1 to 1.5 parts of catalyst .

Embodiment 2

[0089] POSS (polyhedral polysilsesquioxane) and polydimethylsiloxane are blended to form a blended polymer, POSS accounts for 10 wt% of the blended polymer, and a diaphragm material is formed after a cross-linking reaction to be assembled into a product.

[0090] The polydimethylsiloxane formula is as follows:

[0091] In parts by mass, 100 parts of polydimethylsiloxane; 15 to 50 parts of white carbon black; 0.3 to 1 part of siloxane coupling agent; 0.5 to 2 parts of vulcanizing agent; 0.1 to 1.5 parts of catalyst .

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Abstract

The invention discloses a vibrating diaphragm of a sound production device, and the sound production device. The vibrating diaphragm of the sound production device comprises at least one modified silicone rubber membrane layer, the modified silicone rubber membrane layer is made of modified silicone rubber, the modified silicone rubber is prepared by cross-linking reaction of a polymer blend of polydimethylsiloxane and polyhedral polysilsesquioxane, the molecular formula of polyhedral polysilsesquioxane is (RSiO3 / 2)n, the ratio of silicon atoms to oxygen atoms in the molecular formula is 2: 3, n is a natural number, R in the molecular formula is a first group or a substituent group of the first group, and the first group is H, alkyl, alkylene, epoxy group, amino, vinyl, aryl or arylene. The vibrating diaphragm is prepared from the modified silicone rubber which is formed by adding polyhedral polysilsesquioxane with high steric hindrance into the silicone rubber for blending and grafting, so that the vibrating diaphragm has good rebound resilience, the damping performance of the vibrating diaphragm is improved, and polarization reduction and distortion reduction are facilitated.

Description

technical field [0001] The present invention relates to the field of electroacoustic technology, and more specifically, to a diaphragm of a sound generating device and a sound generating device using the diaphragm. Background technique [0002] With the improvement of the requirements for high power, waterproof performance and high sound quality of speakers, the diaphragm made of silicone rubber has also been applied in the field of speakers. However, the modulus or hardness of silicone rubber is relatively low. When meeting the same F0 (resonant frequency) as other types of diaphragm materials, its damping performance is poor and distortion is high, which is difficult to meet the actual use needs of speakers. [0003] Therefore, a new technical solution is needed to solve the above problems. Contents of the invention [0004] An object of the present invention is to provide a vibrating membrane of a sound generating device. [0005] Another object of the present inventi...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08J3/24C08L83/04C08K7/26H04R9/02H04R9/04H04R9/06H04R31/00
CPCC08J5/18C08J3/246H04R9/025H04R9/04H04R31/003H04R9/06C08J2383/04C08J2483/04C08K7/26
Inventor 惠冰凌风光李春
Owner GOERTEK INC
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