| 摘要 |
PURPOSE:To prevent the slack of a cable by a method wherein, in an entrance/ exit managing device using a radio ID card, an opening demand means mounted on an opening/closing body is connected to an opening/closing control part through a flat cable having winding elasticity. CONSTITUTION:Loop antennas 5a and 5b to communicate opening and closing information between the radio ID card of an entering and leaving stuff and the antennas are embedded in biparting doors 1a and 1b, and operable and controllable by means of an opening/closing mechanism. Flat cables 15a and 15b having spiral spring characteristics are formed, the moving ends thereof are supported to support parts 31a and 31b, and connected to the antennas 5a and 5b through antenna cords 13a and 13b. The other ends of the cables 15a and 15b are interconnected to form a fixed end, which is connected to a control part through a transmission cable 19. This constitution causes a signal transmittion device to form space-saving and simple structure and prevents entanglement and disconnection of the cable. |
