Patent ID: 6175729
Filing Date: 2001-01-16
Classification: A44C,G04R,H01Q

Abstract:
A wrist band for a device main body containing communication circuits comprising:a first wrist band at least partially covering a first antenna plate extending from a first side of the device main body;a second wrist band at least partially covering a second antenna plate extending from a second side of the device main body;a releasable clasp device including a contact mechanism for electrically connecting the first antenna plate and the second antenna plate to form a loop-like antenna when second wrist band and the first wrist band are clasped;the releasable clasp device having a three fold structure including a clasp lower plate having a base end portion fixed to the first wrist band, a clasp intermediate plate connected to the clasp lower plate, a clasp upper box connected to the clasp intermediate plate and fixed to the second wrist band and a clasping lock mechanism which fixes the clasp upper box to the clasp lower plate when the clasp intermediate plate is rotated and overlapped onto the clasp lower plate; andthe contact mechanism includes a bare portion of the second antenna plate on an inner peripheral surface of the second wrist band and a projecting contact portion projecting from a top surface of the clasp lower plate and electrically connected with the first antenna plate, the projecting contact portion contacting the bare portion of the second antenna plate when the first wrist band and the second wrist band are clasped.