Contact detection device, and door handle device and smart...

H - Electricity – 01 – H

Patent

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Details

H01H 35/00 (2006.01) E05B 1/00 (2006.01) E05B 49/00 (2006.01) H01H 36/00 (2006.01) H01L 41/08 (2006.01) H01L 41/113 (2006.01)

Patent

CA 2604522

Conventional switches for detecting operation of a door handle include a contact type and a capacitance type, and they have problems such as a contact failure due to aging and a malfunction due to rain, and in addition, they have inferiority in multifunctionality required for other applications. A contact detection device of the invention has a support means (8) having a movable section displaced when subjected to contact; a cable-like piezoelectric sensor (4) supported at a part by the support means (8) and deformed in association with displacement of the movable section (8c); and a signal processing means for processing an output signal of the cable-like piezoelectric sensor (4). The cable-like piezoelectric sensor (4) has a bend (4a) to form simultaneously deforming sections, and contact is detected when the simultaneously deforming sections are deformed in operative association with the movable section (8c).

Les interrupteurs classiques destinés à détecter l'action sur une poignée de porte comprennent un type à contact et un type capacitif, qui souffrent de problèmes comme des défauts de contact dus au vieillissement et des dysfonctionnements dus à la pluie. De plus, il leur manque la polyvalence requise pour d'autres applications. Un dispositif de détection de contact selon la présente invention est muni d'un moyen de support (8) doté d'une section mobile qui est déplacée lorsqu'elle subit un contact ; un capteur piézoélectrique (4) en forme de câble supporté en partie par le moyen de support (8) et déformé en association avec le déplacement de la section mobile (8c) ; et un moyen de traitement du signal destiné à traiter un signal de sortie du capteur piézoélectrique (4) en forme de câble. Le capteur piézoélectrique (4) en forme de câble présente un coude (4a) pour former des sections simultanément déformables, et le contact est détecté lorsque les sections simultanément déformables sont déformées en association fonctionnelle avec la section mobile (8c).

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