| 摘要 |
<p>PURPOSE:To enable the application of simple and low cost construction and ensure power supply without any need of a special contact point and the like by supplying power to an electric component on a top pole via a conductive core wire within a drive cord at the time of the telescopic motion of a corner pole. CONSTITUTION:Power is supplied to a pilot lamp 5b on a top pole 53 movable vertically with the telescopic motion of a corner pole 5, using a conductive core wire 11 buried within a drive cord 10 for actuating said telescopic motion. Therefore, no separate wiring is required for power supply and low cost and simple construction can be applied. And the end of the drive cord 10 is secured to a fixing part 6 and a power supply source is connected to the core wire 11 at the fixed end thereof. Consequently, a contact point and the like are not required specifically and proper power supply can be made. Also, the end part of the wire 11 at the fixed side is turned and curved, and the end portion thereof can be well accommodated.</p> |
