| 摘要 |
PROBLEM TO BE SOLVED: To provide a drive device which can be operated easily as well electrically as manually and can take three positions, the first, the second, and intermediate position, accurately even in the case of manual operation. SOLUTION: The rorary motions are converted by a contact drive shaft 10 into the motions of a movable contact, and this is connected with a drive disc 11 equipped with two notches 12, 13, and further, two drive members 28, 29; 30, 31 are furnished which make straight motions. These are detained with one notch 12/13, and the drive disc 11 is rotated from the central position in one rotating direction, or in the opposite direction, to the first and the second position. |
