Switch device and airbag device with horn switch

Details Switch device and airbag device with horn switch Switch device and airbag device with horn switch

H - Electricity

01

H

H01H 13/08 (2006.01) B60R 21/16 (2006.01) H01H 1/06 (2006.01)

Patent

CA 2701403

In a switch device, such as a horn switch device attached to a steering wheel, a water column is prevented from being formed between contact sections of a pair of contact points facing each other. A movable member (30) and a fixed member (40) of a horn switch device (20) are disposed in an opposed manner such that the movable member (30) on an upper side can be moved toward and away from the fixed member (40) on a lower side and such that it is urged upward by urging means (50). Furthermore, at least a pair of protruding contact points (35) and (45) are formed on the movable member (30) and the fixed member (40), at positions facing each other. By bringing them into contact with each other, the members (30) and (40) are electrically connected, closing a horn circuit. A rivet (46), serving as a contact section, is attached to a tip portion of the fixed contact point (45) on the lower side, and an opening portion (36) is provided in the movable contact point (35) on the upper side, the outer peripheral side of which is made to serve as a contact section to be brought into contact with the rivet (46).

L'invention porte sur un dispositif de commutateur, tel qu'un dispositif de commutateur d'avertisseur sonore, installé sur un volant, dans lequel une colonne d'eau est empêchée d'être produite entre des sections de contact d'une paire de points de contact opposés. Un élément mobile (30) et un élément stationnaire (20) du dispositif de commutateur d'avertisseur sonore (20) sont agencés pour être opposés entre eux, et l'élément mobile supérieur (30) est placé de telle sorte qu'il peut établir un contact avec et se séparer de l'élément stationnaire inférieur (40) et qu'il est sollicité vers le haut par des moyens de sollicitation (50). En outre, au moins une paire de points de contact de type saillie (35, 45) est formée sur l'élément mobile (30) et l'élément stationnaire (40) au niveau de leurs positions se faisant face. Lorsque les points de contact (35, 45) sont en contact les uns avec les autres, les deux éléments (30, 40) sont électriquement interraccordés pour fermer un circuit d'avertisseur sonore. Un rivet (46) en tant que section de contact est installé à la tête du point de contact stationnaire inférieur (45), et une ouverture (36) est formée dans le point de contact mobile supérieur (35). La périphérie externe de l'ouverture (36) fonctionne en tant que section de contact établissant un contact avec le rivet (46).

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