A method for manufacturing a head cap of a microphone

Abstract

The invention provides a method for manufacturing a head cap of a microphone, and manufacture efficiency can be improved by performing supersonic welding to connection part of the head cap with accurate size, favorable strength and good shielding effect. The head cap is provided with the following components: an upper side network part (32) in arch roughly that implemented rust prevention treatment, and a lower side network part (12) in cylindraceous roughly; and a middle ring (42) made of workable metallic material is clamped between opening marginal parts (33), (14), on contraposition of the32 and 12; and a neck ring (22), for connecting an opening (13) side on base terminal of the lower network part (12) to side of a holding body, which is made of workable metallic material; the opening (13) on base terminal of the lower network part (12) is welded to the neck ring (22) by ultrasonic wave in surface form; each opening marginal parts (33), (14) is welded to the middle ring (42) by ultrasonic wave in surface form. In this way, the whole is integrated as a whole to be the head cap (11).

Description

technical field [0001] The present invention is a technique related to a method of manufacturing a head cover of a microphone. Background technique [0002] The hood of the microphone plays a role of taking sound waves into the microphone unit side while protecting the microphone unit from external stress. [0003] And, the hood has the hood that is formed into various shapes, but for example in the patent document 1 (Japanese patent publication No. S56-89193 communique) figure 1 discloses spherically formed hoods. [0004] The headgear of Patent Document 1 integrates the upper mesh part and the lower mesh part covering the microphone unit through an intermediate ring so as to form a substantially spherical shape, and connects the base end side of the lower mesh part through a neck ring. The opening is connected and fixed to the side of the holding body. [0005] In this case, if the microphone itself is cheap, it is manufactured by the following method: the upper mesh po...

AI Technical Summary

Problems solved by technology

In addition, when the zinc layer is removed from the mesh material, gaps appear between the wires and the strength of the mesh decreases.

[0016] And there is also the following disadvantages: the size of the internal thread 8a deviates due to the neck ring 8 being heated, so that it cannot be smoothly screwed onto the external thread 2a on the side of the holding body 2

[0017] In addition, the head cover 3 has the welded part with the intermediate ring 6 and the welded part with the neck ring 8 formed in a dot shape via the end of the wire, so there is also a problem that the shielding effect is poor.

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