Front cover and method for manufacturing the front cover

Abstract

The invention provides a front cover comprising an annular main body part and a sound production hole enclosed by the main body part, wherein the main body part comprises an inner surface, an outer surface and an inner wall surface for connecting the inner surface and the outer surface, the inner wall surface surrounds the sound production hole, the inner surface is sequentially provided with a fixing part fixedly connected with a vibrating diaphragm and an evasion part depressing toward the direction of the outer surface and formed by performing at least twice pressing processing on the innersurface from the outer edge toward the direction of the inner wall surface, the evasion part comprises a first step connected with the fixing part and a second step connected with the first step, thesecond step is arranged between the inner wall surface and the first step, and the distance from the second step to the outer surface is smaller than the distance from the first step to the outer surface. The manufacturing method of the front cover provided by the invention adopts pre-pressing and re-pressing to form the front cover by twice pressing, compared with the prior art, the manufacturing method of the front cover provided by the invention has the advantages that the processing depth of the front cover can be guaranteed, the extrusion mark is eliminated, the service life of the product is prolonged, and the stability of the product is improved.

Description

【Technical field】 [0001] The invention relates to the field of electro-acoustic transduction, in particular to a front cover used in a sound generator and a manufacturing method thereof. 【Background technique】 [0002] With the rapid development of science and technology, the popularity of audio equipment is getting higher and higher. People's requirements for audio equipment are not limited to video playback, but also require more requirements for the reliability of audio equipment. Especially with the advent of the 4G era, mobile multimedia technology has also developed. Many audio devices have a variety of entertainment functions, such as video playback, digital cameras, games, GPS navigation, etc., and their requirements for the playback sound quality of audio devices are also increasing. high. [0003] As a commonly used electronic component, the sound generator is mainly used for playing audio signals. The sound generator usually includes a housing and a front cover ...

AI Technical Summary

Problems solved by technology

However, the front cover prepared by the above process has the following problems: 1. The processing depth of the relief groove is not in place; 2. The life of the product formed by one-time extrusion is low, and it is easy to burst; 3. Since the product is formed by one-time extrusion, the material flows Unsmooth, severe indentation

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