| 摘要 |
<p>PURPOSE:To simplify a catching mechanism, to reduce the number of parts and to make the device light by pressing a 2nd guide post unit to a catching member by the guide member to lead the succeeding 2nd guide post unit to the catching member. CONSTITUTION:The 2nd guide post unit 20 is guided to a catcher 42 by the cam 41 which is rotated by the cam provided on a loading ring 1 and is further pressed to a catcher 42 by the rotation energizing spring 47 of the cam 41. The cam 41 as the guide member rotates the guide post unit 20 up to the guidable position at the time when it is approaching and presses it further to the catcher 42 by the action of the spring 47 and cam. The guide member of the guide post unit, the moving mechanism of the guide member and the pressing mechanism to the catcher 42 of the guide post unit are thus realized altogether. In this way the reduction of the number of parts and the light weighing of the device are made possible.</p> |
