Lightweight braided shielding for wiring harnesses

Details Lightweight braided shielding for wiring harnesses Lightweight braided shielding for wiring harnesses

H - Electricity

01

B

H01B 11/06 (2006.01) H01B 11/10 (2006.01)

Patent

CA 2200439

A lightweight braided metallic shielding is applied to wiring harnesses to protect against lightning strikes and electromagnetic interference (EMI). The braided shielding has an open braid construction which may be as much as 40% lighter in weight and which provides better electromagnetic shielding than conventional braided shielding. The decrease in weight is achieved by utilizing a braid carrier application angle, as measured from the axis of the wire harness, which is as small as about eighteen degrees, so as to produce a braided shield that has as few as four picks per inch. The ensuing braided shield is very flexible and results in a degree of wire harness coverage which may be as low as about 60 %, but which exhibits low electrical resistance which contributes significantly to lightning protection and EMI shielding.

Blindage métallique tressé de faible poids appliqué sur des faisceaux de câbles pour les protéger contre la foudre et les interférences électromagnétiques (EMI). Ce blindage tressé est constitué par un tressage à jours, qui permet de réaliser un gain de poids de près de 40 % et qui assure un blindage électromagnétique meilleur qu'un tressage conventionnel. Pour ce faire, on utilise un angle d'application de la structure tressée, selon l'axe du faisceau de câble, qui ne dépasse pas 18 DEG environ, de manière à obtenir un blindage tressé ne comportant pas plus de 4 duites par pouce. Le blindage tressé ainsi obtenu se révèle très souple et assure un degré de couverture du faisceau de câbles qui peut ne pas dépasser 60 % environ mais qui offre une faible résistance électrique, ce qui contribue de manière significative à la protection contre la foudre et au blindage contre les interférences électromagnétiques.

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