| 摘要 |
<p>PURPOSE:To obtain a simple and compact constitution of a power mechanism by using a guide mechanism which leads the oscillation part of a selection plate into the shift side when a member to be operated is kept at its retreat position and then leads the oscillation part into the release side when the member to be operated is kept the shift position. CONSTITUTION:When a selection plate 18 is moved forward while a member 16 to be operated by kept at its retreat position, a guide mechanism 14 leads an oscillation part 18a of the plate 18 into the shift side. Then the revolving force of a power cam is transmitted to the member 16 via the plate 18 and the member 16 is shifted. Then a lock member 13 locks the member 16. In the case the plate 18 is moved forwards again while the member 16 is kept at the shift position, the mechanism 14 leads the part 18a into the release side and releases the member 13 locking the member 16. At the same time, the member 16 is moved back by an energizing means which energizes the member 16 to the back side. In such a constitution, a simple and compact power mechanism is obtained.</p> |
