| 摘要 |
PROBLEM TO BE SOLVED: To reduce cost of a drive part and its weight and to provide sound- proofing and vibration-proofing effect. SOLUTION: A motor M, a worm 4, a worm wheel 40, a sprocket, a push-pull chain 30, etc., are included in resin housings 42-45, to reduce cost and weight of a drive part 3. Gear groups 5-56 of a reduction mechanism are included in metal housings 46, 47, and the metal housings 46, 47 are installed on resin housing 42-45 through a rubber bush 57, thereby sound-proofing and vibration- proofing effect are achieved. |
