Vehicle-use electronic key system

B - Operations – Transporting – 62 – H

Patent

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Details

B62H 5/00 (2006.01) B62J 99/00 (2009.01) B60R 25/04 (2006.01) B60R 25/10 (2006.01)

Patent

CA 2501015

A vehicle-use electronic key system comprising a control unit (14) mounted on a real car (100A), and an electronic key (12) for sending a response signal (Sa) on receiving a request signal (Sr) sent from the control unit (14) via a transmission antenna (72), the antenna (72) being installed near the middle of the real car (100A). Specifically, when a line segment (wheel base) (154) connecting the center (150a) of a front wheel (150) to the center (152a) of a rear wheel (152) is assumed, the transmission antenna (72) is installed in any location within a range from the upper part to the lower part of the real car (100A) within a range from a 1/4 point (P1) to a 3/4 point (P2) of the wheel base (154) with the center (150a) of the front wheel (150) as a reference.

Le système de clé électronique utilisé avec un véhicule comprend une unité de commande (14) montée sur une voiture réelle (100A) et une clé électronique (12) destinée à envoyer un signal de réponse (Sa) à la réception d'un signal de requête (Sr) envoyé depuis l'unité de commande (14) via une antenne de transmission (72), l'antenne (72) étant installée vers le milieu de la voiture réelle (100A). Lorsqu'on trouve notamment le segment de ligne (la base de roues) (154) reliant le centre (150a) d'une roue avant (150) au centre (152a) de la roue arrière (152), l'antenne de transmission (72) est montée à n'importe quel endroit entre la partie supérieure et la partie inférieure de la voiture réelle (100A), dans une gamme comprise entre 1/4 de point (P1) et 3/4 de points (P2) de la base des roues (154) avec le centre (150a) de la roue avant (150) utilisé comme référence.

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