NONCONTACT CHARGER, DISTANCE MEASURING UNIT OF POSITIONAL RELATION DETECTOR FOR NONCONTACT CHARGER, AND DISTANCE MEASUREMENT UNIT OF POSITIONAL RELATION DETECTOR

摘要

PPROBLEM TO BE SOLVED: To provide a noncontact charger capable of precisely and quickly detecting the relative positional relation between a primary device and a secondary device. PSOLUTION: The noncontact charger includes a positional relation detector M which detects the relative positional relation between the primary device E1 connected to a charging power supply and the secondary device E2 connected to a power accumulating device. The positional relation detector M has a distance measurement unit Mp disposed on the secondary device E2, and a distance measuring unit Ma disposed on the primary device E1. The distance measurement unit Mp has a distance measurement surface 3 counter to the distance measuring unit Ma, the distance measurement surface 3 having a circular sectional shape on a plane perpendicular to a given distance measuring direction and a radius gradually increasing toward one side of the distance measuring direction. The distance measuring unit Ma has three or more distance measuring portions 4 dispersedly arranged on the same circumference on a plane perpendicular to the distance measuring direction, the distance measuring portions 4 measuring the distance up to the distance measurement surface 3 in the distance measuring direction. PCOPYRIGHT: (C)2010,JPO&INPIT