Gasket for electromagnetic wave shielding

Abstract

A gasket (1) for electromagnetic wave shielding, which is formed by integrating a gasket body (2) and an electrically conductive nonwoven cloth or woven cloth and in which a seal section is formed atan area excluding the area of the conductive nonwoven cloth or woven cloth. Such a gasket for electromagnetic wave shielding is generally formed by integrating the gasket body (2) with the conductivenonwoven cloth or woven cloth, at an end section of the gasket body (2), preferably at an end section of the gasket body (2) having a lip-like ridge (3), and particularly preferably, the gasket is formed by integrating the gasket body with an outer peripheral section (6) of the conductive nonwoven cloth or woven cloth (5), at an inner peripheral section (4) of the annular gasket body having the lip-like projection (3).

Description

technical field [0001] The present invention relates to a gasket for electromagnetic wave shielding. More specifically, it relates to a gasket for electromagnetic wave shielding capable of preventing a reduction in durability. Background technique [0002] In electronic equipment housing electronic circuits, electronic devices, etc., there is a problem that water or dust from the outside enters through the gap between the housing and the cover, and adversely affects other parts of the electronic equipment. Therefore, a method of interposing a gasket between the housing and the cover to prevent intrusion of water or dust from the outside is generally employed. However, since a gap of the insulator is formed between the frame body and the cover body by sandwiching the gasket in this way, a problem arises that electromagnetic waves leak through the gap. [0003] As a countermeasure, gaskets made of conductive rubber are often used. However, since conductive rubber disperses a...

AI Technical Summary

Problems solved by technology

However, a gap of an insulator is formed between the frame body and the cover body by interposing the gasket in this way, and there is a problem that electromagnetic waves leak through the gap.

[0003] As a countermeasure, gaskets made of conductive rubber are often used, but since conductive rubber disperses conductive substances in rubber as a filler, the elasticity of the rubber is impaired and the durability of the gasket is often reduced.

In addition, although there are also proposals to improve elasticity by compounding, in these proposals, shielding materials are also placed on the sealing surface of the gasket, resulting in insufficient sealing performance as a gasket

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