| 摘要 |
PURPOSE:To tilt a reflector up and down and also to improve reliability of an antenna, by providing a tilting motor at the fixed side to move the center shaft of a rotary joint. CONSTITUTION:A power supply which drives a reflector 1 is applied to a tilting motor 2 provided at the fixed side. The forward or backward revolution of the motor 2 moves up and down a cam 10 via a tilting gear 4. the movement of the center shaft 8 of a rotary joint 5 is transmitted to the reflector 1 by a coupling rod 9. Then the reflector 1 moves up and down on the basis of a tilting shaft 3. The slipping is not needed for tilting of the reflector 1 by making use of the shaft 8 of the joint 5. Thus, the reliability of an antenna is improved. |
