| 摘要 |
PURPOSE:To simplify the elevating and descending control by fitting freely slidably a driving section elevating and desending a rod antenna fitted to a car body to the car body and using a switch changed over by the slide as a control switch for the driving section. CONSTITUTION:The rod antenna B is compressed or expanded by being elevated and descended by the driving sections 4, 5 and 6 where a plastic cord is fitted to a case 1. Since the rod antenna B is fitted to the car main body and the case 1 is fitted freely slidably to slide shafts 2, 3 fitted to the car main body, the case 1 is moved to one of both ends 2a, 2b of the slidable range when the rod antenna B is expanded or compressed completely. Since the switch 9 changed over by the slide of the case is connected so as to change over the direction of revolution of a DC motor 4 of the driving section energized via an SCR12, when the antenna is compressed or expanded completely, the switch 9 is changed over, the SCR12 is interrupted and the DC motor 4 is stopped. |
