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Acoustic membrane

An acoustic and acoustic device technology, applied in the direction of diaphragm structure, flat diaphragm, polymer material diaphragm, etc., can solve problems such as material failure, and achieve the effect of low Young's modulus

Inactive Publication Date: 2018-12-21
奥地利依索沃尔塔股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] However, dealing with material failure of small membrane components and acoustic membranes is a problem, especially in micro applications

Method used

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Embodiment Construction

[0046] example

[0047] Preparation of membranes according to the invention

[0048] As noted above, all materials may be thermoformable, therefore, in some embodiments of multilayer films according to the present invention, each layer may be produced by extrusion. The inventors have found that films according to the invention can be produced by coextrusion. A method for producing membranes according to the invention is described in WO 2015 / 052316.

[0049] Three-layer film layout

[0050] figure 1 A schematic diagram of a three-layer laminate of a film 100 having three layers 101 , 102 and 103 according to the invention is shown. The upper outer layer 101 and the lower outer layer 102 are formed of thermoplastic elastomer. The middle layer is the damping layer 103 . Preferably, the outer layers 101 and 102 are formed of the same material, and the upper and lower sides of the membrane 100 are identical to each other. In one embodiment, the outer layers 101 and 102 m...

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Abstract

An acoustic membrane (100) comprises at least three layers with a first outer layer (101) and a second outer layer (102), wherein the first and second outer layers (101, 102) are formed by a thermoplastic elastomer, the thermoplastic elastomer forming the first outer layer and the thermoplastic elastomer forming the second outer layer are independently from each other selected from the group consisting of polyester elastomers, co-polyester elastomers, styrene block copolymers, elastic co-polyamides, thermoplastic silicones, and elastomeric polyolefins, preferably co-polyester elastomers.

Description

technical field [0001] The present invention relates to an acoustic membrane having a first outer layer and a second outer layer, and an acoustic device comprising such an acoustic membrane. Background technique [0002] Electromagnetic transducers are used in loudspeakers and microphones of all types, especially for tiny loudspeakers used in mobile phones, laptops, tablets, game consoles, headsets, hands-free speakerphones, modern televisions and also in the automotive sector middle. [0003] General market trends show that the structural shape of such loudspeakers does not allow a uniform design and requires great flexibility from the manufacturer. Additionally, the smallest structural shape with maximum performance is often required. However, the highest demands are placed on acoustic quality. All these requirements place enormous technical demands on the membrane which is used as a core component of a loudspeaker or a microphone, respectively. [0004] To meet these ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R7/10H04R31/00
CPCH04R7/10H04R31/003H04R2307/025H04R2499/11H04R1/288
Inventor 克里斯蒂安·策希纳彼得·皮特尔
Owner 奥地利依索沃尔塔股份公司
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