Glass capsule enclosed shock sensor

H - Electricity – 01 – H

Patent

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Details

H01H 35/14 (2006.01) H01H 1/66 (2006.01)

Patent

CA 2272072

A shock sensor (20) having some structural similarities to a reed switch, particularly in the use of a glass capsule (22) which hermetically seals the components of the shock sensor. The shock sensor employs a sensing mass (31) mounted on a metallic planar spring (32). Under the influence of a crash- induced acceleration, the sensing mass is driven against a fixed contact to close an electrical circuit. To extend the closure duration and increase the reliability, the contact surface (40) which is formed on the sensing mass is oriented at an angle of 60 degrees out of the plane containing the spring.

Un détecteur (20) de choc présente quelques similitudes de construction avec un contact en ampoule particulièrement dues au fait de l'utilisation d'une capsule (22) de verre pour enfermer hermétiquement les constituants du détecteur de choc. Ce dernier (20) comprend une masse (31) de détection montée sur un ressort plat métallique (32). Sous l'effet d'une accélération induite par la collision la masse de détection est conduite contre un contact fixe qui ferme un circuit électrique. Pour augmenter la durée de vie de l'enveloppe et améliorer sa fiabilité, la surface (40) de contact qui est formée sur la masse de détection est elle-même orientée avec un angle de 60· hors du plan contenant le ressort.

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