Vibrating diaphragm of sound-producing apparatus and sound-producing apparatus

Patent metadata

Field	Value
Publication number	US-12200459-B2
Application number	US-201917767365-A
Country	US
Kind code	B2
Filing date	Dec 25, 2019
Priority date	Oct 31, 2019
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

The present disclosure provides a vibrating diaphragm of a sound-producing apparatus and the sound-producing apparatus. The vibrating diaphragm includes a fluorosilicone rubber film layer, and the fluorosilicone rubber includes a linear polymer composed of a silica main chain and a side chain radical; a molecular structure of the polymer
including a unit with the side chain radical with vinyl is a methyl vinyl siloxane unit, and a unit with the side chain radical with R 1 is a fluorine-containing siloxane unit; and wherein n and m are natural numbers, and R 1 comprises at least one of fluoroalkyl and fluoroaryl.

First claim

The invention claimed is:

1. A vibrating diaphragm of a sound-producing apparatus, wherein the vibrating diaphragm comprises a fluorosilicone rubber film layer, and the fluorosilicone rubber comprises a linear polymer composed of a silica main chain and a side chain radical;
the polymer having a molecular structure as follows:

wherein a unit with the side chain radical with vinyl is a methyl vinyl siloxane unit, and a unit with the side chain radical with R1 is a fluorine-containing siloxane unit;
wherein n and m are natural numbers, and R1 comprises at least one of fluoroalkyl and fluoroaryl, and
wherein the fluorosilicone rubber further comprises a vulcanizer, and the vulcanizer comprises at least one of an oxide and hydrogen-containing silicone oil.

2. The vibrating diaphragm of claim 1 of a sound-producing apparatus, wherein R1 comprises at least one of γ-trifluoropropyl, pentafluorobutyl, heptafluoropentyl and fluorophenyl.

3. The vibrating diaphragm of claim 1 of a sound-producing apparatus, wherein an amount of the methyl vinyl siloxane unit is no more than 2 mol % of the total amount of the polymer.

4. The vibrating diaphragm of claim 1 of a sound-producing apparatus, wherein the fluorosilicone rubber further comprises an inorganic filler reinforcing agent, and the inorganic filler reinforcing agent comprises at least one of a carbon black and a white carbon black.

5. The vibrating diaphragm of claim 4 of a sound-producing apparatus, wherein an added amount of the inorganic filler reinforcing agent is 5 to 90 parts when a mass fraction of the polymer is 100 parts, a hardness of the fluorosilicone rubber is 30 A to 85 A and a 100% stable stretch modulus of the fluorosilicone rubber at room temperature is 0.5 MPa to 50 MPa.

6. The vibrating diaphragm of claim 1 of a sound-producing apparatus, wherein an elongation at break of the fluorosilicone rubber is greater than 50%.

7. The vibrating diaphragm of claim 1 of a sound-producing apparatus, wherein the vibrating diaphragm is a single-layered vibrating diaphragm.

8. The vibrating diaphragm of claim 1 of a sound-producing apparatus, wherein the vibrating diaphragm is a compound vibrating diaphragm, and the compound vibrating diaphragm comprises at least one fluorosilicone rubber film layer.

9. The vibrating diaphragm of claim 1 of a sound-producing apparatus, wherein a thickness of the vibrating diaphragm is 10 μm to 200 μm.

10. The vibrating diaphragm of claim 1 of a sound-producing apparatus, wherein the vibrating diaphragm is prepared by one of pressure forming, injection molding and blow molding.

11. A sound-producing apparatus, comprising the vibrating diaphragm of claim 1 , wherein the vibrating diaphragm is configured to enable the sound-producing apparatus to generate a sound by vibration.

12. The vibrating diaphragm of claim 5 of a sound-producing apparatus, wherein a thickness of the vibrating diaphragm is 30 to 120 μm, and an adjustable range of F0 of the sound-producing apparatus is 150 to 1500 Hz.

Assignees

• Goertek Inc

Inventors

• Wang Shuqiang
• Ling Fengguang
• Li Chun
• Liu Chunfa

Classifications

• H04R9/06

  Loudspeakers · CPC title

• H04R2307/025

  Diaphragms comprising polymeric materials · CPC title

• H04R9/02

  Details · CPC title

• H04R7/10 Primary

  comprising superposed layers in contact · CPC title

• C08G77/12

  containing silicon bound to hydrogen · CPC title