Composite diaphragm and its making method

A manufacturing method and bonding technology, applied in the direction of diaphragm structure, sensors, electrical components, etc., can solve the problems of high production cost, complex coating process, thin nano-scale metal film or oxide film coating thickness, etc., and achieve simple manufacturing method , low production cost, high strength effect

Active Publication Date: 2008-06-18
AAC ACOUSTIC TECH (SHENZHEN) CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In the Chinese patent ZL 03136666.X announced on March 7, 2007, a method of sputtering a nanoscale metal film or oxide film on the diaphragm and the edge is disclosed, which can adjust the performance of the micro-sounding

Method used

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  • Composite diaphragm and its making method
  • Composite diaphragm and its making method

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Example Embodiment

[0020] The metal foil 32 is preferably aluminum foil, which can be connected to the middle plate 31 by gluing. The first embodiment of the present invention: the metal foil 32 is glued to the upper surface 311 and the lower surface 312 of the middle plate 31 at the same time; another of the present invention Embodiment: the metal foil 32 is only glued to the upper surface 311 (not shown) of the middle plate 31; in addition, the third embodiment of the present invention is: the metal foil 32 is only glued to the lower surface 312 of the middle plate 31 (not shown) ).

[0021] By gluing the metal foil 32 on the middle flat plate 31, the flat dome 3 has a high strength, thereby expanding the high-frequency characteristics and sound characteristics of products using the composite diaphragm 1.

[0022] A method for manufacturing a composite diaphragm 1 includes the following steps:

[0023] Provide the middle plate 31; apply glue on the surface of the middle plate 31; provide the metal...

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Abstract

The invention discloses a composite diaphragm and a method of producing the composite diaphragm. The composite diaphragm mainly comprises a plate spherical cap and a soft suspension ring, the center of which is a plane, wherein, the plate spherical cap is on the soft suspension ring and the lower surface of the plate spherical cap touches the plane in the center of the soft suspension ring. The plate spherical cap comprises a middle plate and a metal foil attached to the middle plate. The metal foil can be glued on the upper surface of the middle plate or on the lower surface of the middle plate or on both the upper surface and the lower surface of the middle plate. The composite diaphragm of the invention has the advantages of simple manufacturing method and extended application of high frequency property and acoustic property of products of the composite diaphragm.

Description

【Technical field】 [0001] The invention relates to a miniature sound-generating device, in particular to a composite diaphragm structure of a miniature loudspeaker. 【Background technique】 [0002] With the continuous improvement of market demand, mobile phones are gradually becoming thinner, and the sound quality is required to be better and better, which requires the acoustic devices in mobile phones to be small, thin, and high-quality. The diaphragm is the core component of acoustic devices such as loudspeakers, and the requirements for its acoustic performance have also increased accordingly. [0003] In the related technology, the diaphragm of the speaker and the dome on it are formed by hot pressing from the same material, which cannot take into account the performance of low frequency and high frequency at the same time. When a lower low frequency is required, a softer material is required. Diaphragm, and when the surround is soft, the dome will also be soft, affecting...

Claims

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Application Information

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IPC IPC(8): H04R7/02H04R31/00
Inventor 李林珍
Owner AAC ACOUSTIC TECH (SHENZHEN) CO LTD
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