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A composite vibrating membrane and its preparation method, and a sound producing device

A sounding device and body film technology, which is applied in the direction of polymer material diaphragm, planar diaphragm, chemical instrument and method, etc. It can solve the problems of insufficient adhesion, damage, and poor temperature resistance of the elastic film layer. , to achieve the effect of improving damping and bonding performance, improving temperature resistance, and widening the scope of use

Active Publication Date: 2022-07-19
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The composite diaphragm of elastic body and rubber film is usually pasted together by the elastic body film layer and the rubber film layer. The adhesive force is not strong enough, it is easy to delaminate after bonding, and the reliability is poor; and the temperature resistance of the adhesive film layer itself is poor, which reduces the overall temperature resistance of the composite diaphragm. With the high power of the speaker, the voice coil Under the high heat and strong vibration transmitted, there are problems such as easy cracking, damage and collapse of the diaphragm

Method used

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  • A composite vibrating membrane and its preparation method, and a sound producing device
  • A composite vibrating membrane and its preparation method, and a sound producing device
  • A composite vibrating membrane and its preparation method, and a sound producing device

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preparation example Construction

[0049] In addition, the present invention also provides a method for preparing a composite diaphragm. In an embodiment of the method for preparing a composite diaphragm provided by the present invention, the composite diaphragm 100 includes a polyacrylate copolymer vulcanized rubber film layer 10 and a first An elastomer film layer 20, the first elastomer film layer 20 is disposed on one side of the polyacrylate copolymer vulcanized rubber film layer 10, and the preparation method of the composite diaphragm includes the following steps:

[0050] The non-crosslinked or partially crosslinked polyacrylate copolymer vulcanized rubber film and the first elastomer film are compounded, and the composite diaphragm is formed by air pressure or compression molding, and in the air pressure or compression molding, the polymer is Acrylate copolymer vulcanized rubber film is cross-linked and shaped. In this way, before the composite diaphragm 100 is formed by air pressure or molding, the po...

Embodiment 1

[0055] The composite diaphragm 100 includes a polyacrylate copolymer vulcanized rubber film layer 10 and a first elastomer film layer 20 (eg, figure 1shown), the thickness of the polyacrylate copolymer vulcanized rubber film layer 10 is 10 μm, the Shore hardness is 75A, the material of the first elastomer film layer 20 is TPEE, and the thickness is 10 μm; the composite diaphragm 100 It is prepared by air pressure forming, and the polyacrylate copolymer vulcanized rubber film layer 10 undergoes vulcanization, crosslinking and shaping during the air pressure forming.

Embodiment 2

[0057] The composite diaphragm 100 includes a polyacrylate copolymer vulcanized rubber film layer 10 and a first elastomer film layer 20 (eg, figure 1 shown), the thickness of the polyacrylate copolymer vulcanized rubber film layer 10 is 95 μm, the Shore hardness is 30A, the material of the first elastomer film layer 20 is TPEE, and the thickness is 90 μm; the composite diaphragm 100 It is prepared by air pressure forming, and the polyacrylate copolymer vulcanized rubber film layer 10 undergoes vulcanization, crosslinking and shaping during the air pressure forming.

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Abstract

The invention discloses a composite vibrating membrane, a preparation method thereof, and a sound producing device. The composite vibrating membrane comprises a polyacrylate copolymer vulcanized rubber membrane layer and a first elastomer membrane layer, and the first elastomer membrane layer is provided on the One side of the polyacrylate copolymer vulcanized rubber film layer. The composite vibrating membrane provided by the present invention includes a polyacrylate copolymer vulcanized rubber membrane layer and an elastomer membrane layer. Significantly improved, also improved the damping and bonding properties of the composite diaphragm, broadened the use range of the composite diaphragm, and solved the problem of easy rupture and collapse of the diaphragm after high power, large amplitude or high voltage.

Description

technical field [0001] The present invention relates to the technical field of sound-generating devices, in particular to the technical field of sound-generating device vibrating membranes, and in particular to a composite vibrating membrane and a preparation method thereof, and a sound-generating device. Background technique [0002] The structure of the existing sound-emitting device is all provided with a diaphragm, and the diaphragm often adopts a multi-layer composite diaphragm, especially the composite diaphragm of an elastic body and a plastic film is more common. The structure and process of the composite diaphragm are simple, and have relatively High damping and resilience. With the improvement of high power, waterproof and high sound quality requirements, the composite diaphragm of elastomer and film structure has been popularized and applied in the field of sound-emitting devices, especially speakers. [0003] The composite diaphragm of elastomer and plastic film...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R7/10H04R31/00B32B25/04B32B25/14
CPCH04R7/10H04R31/003B32B25/14B32B25/042H04R2231/001H04R2307/025
Inventor 闫付臻周厚强魏秋林李春
Owner GOERTEK INC