Collapse-free sound film

Abstract

The invention belongs to the field of electric sound films and discloses a collapse-free sound film. An edge arc is arranged around the sound film and provided with a decorative pattern, and the section of the edge arc is a section of arc or formed by connection of a plurality of sections of arcs, and positions where arcs are connected are in fillet smooth connection. The section of the decorative pattern is U-shaped, the width of the decorative pattern is twice of the depth of the decorative pattern, the trend of the decorative pattern is basically the same with that of the edge arc, and a radian pattern is formed if the R value is large. The sound film is made of a polyester film, computer-based 3D drawing is adopted, the edge arc and the decorative pattern are designed reasonably according to electro-acoustic parameter requirements of clients, the design of an edge and a copper ring is adopted if the thickness of the raw material of polyester film is below 16 microns, reasonable molding techniques are adopted for different materials and thicknesses, the blow molding technique is adopted for the edge and the copper ring, and the clients use collapse-free vibrating films (sound films) to assemble micro speakers, so that poor acoustic characteristic variation caused by operations, carrying and reliability experiments can be reduced greatly, the production effectiveness can be improved, costs can be reduced, the quality can be guaranteed, and the product reliability can be improved.

Description

technical field [0001] The invention relates to the field of electroacoustics, in particular to a non-collapsing sound membrane. Background technique [0002] The vibrating membrane (sound membrane) currently used in micro-speakers is easily collapsed due to external forces such as operators or handling, and the basic shape is easily collapsed and cannot be restored by itself. The collapse phenomenon also occurred in the reliability test, and the acoustic characteristics changed, mainly manifested as noise in the pure tone test, sound valleys in the frequency response curve test, and increased distortion. resulting in a large number of defective products. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a non-collapsing sound film with a micro-speaker sound film pattern and basic shape that does not collapse, can self-recover to the original shape, and ensures that the original a...

AI Technical Summary

Problems solved by technology

[0002] The vibrating membrane (sound membrane) currently used on micro-speakers is easily collapsed due to external forces such as operators or handling, and the basic shape is easily collapsed and cannot recover by itself.

The collapse phenomenon also occurred in the reliability test, and the acoustic characteristics changed. The main manifestations were noises in the pure tone test, sound valleys in the frequency response curve test, and increased distortion.

resulting in a large number of defective products

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