Sounding device and method for manufacturing sounding device

Abstract

The present invention provides a sounding device and a method for manufacturing the sounding device. The sounding device comprises a vibration system, a magnetic circuit system, and a housing for housing the vibration system and the magnetic circuit system, wherein the vibration system includes a first diaphragm fixed to the housing, a voice coil disposed under the first diaphragm and used for driving the first diaphragm to vibrate, and an elastic support member disposed under the voice coil, fixed to the housing and elastically supporting the voice coil; the elastic support member comprises aflexible circuit board connected to the voice coil and a second diaphragm fixedly connected to the bottom of the flexible circuit board; the housing comprises a basin frame; the elastic support member is fixed to the basin frame; and the flexible circuit board is fixedly attached to the second diaphragm. In the present invention, the flexible circuit board is attached and fixed to the second diaphragm to form an integrated structure. Thus, when the height of the sounding device is constant, the vibration space of the second diaphragm can be saved, the Xmax range of a product can be improved,and the pure tone yield of the product is improved while the assembly processes are reduced.

Description

【Technical field】 [0001] The invention relates to the field of electro-acoustic transduction, in particular to a sound-generating device and a manufacturing method of the sound-generating device. 【Background technique】 [0002] Flexible printed circuit board (Flexible Printed Circuit Board, referred to as FPC board) is made of flexible polyester film or polyimide and other insulating substrates, combined with circuits formed on copper foil by etching, and has high reliability. Excellent flexibility. It can be bent, wound, and folded freely, and can be arranged arbitrarily according to the requirements of space layout, and can be moved and stretched arbitrarily in three-dimensional space, so as to achieve the integration of component assembly and wire connection. Using the FPC board can greatly reduce the volume of the sound-generating device, which is suitable for the development of the sound-generating device in the direction of high density, miniaturization, and high reli...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the advantages and disadvantages of the flexible circuit board are located below the sound membrane. When the sound-generating device is working, there is a phase difference between the sound membrane ring and the force arm of the flexible circuit board, and the sound film ring will interfere with the force arm of the flexible circuit board, thereby Noisy

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