| 摘要 |
PURPOSE:To enable to make a cylinder of a stopper unnecessary, by setting up a shifting stroke of a rod through a length of a cam groove by guiding the rod of the cylinder through a plurality of cam grooves. CONSTITUTION:A guide plate 3 is moved slightly against a spring 4 in a reverse direction of a traction direction of the spring 4 through friction between a large diameter pin 8a and a guide groove 6a as the guide groove 6a is on a slant. Then, when the large diameter pin 8a is moved to the other end 6a2 of the guide groove 6a movement of the large diameter pin 8a is controlled at this point, that is, a movement stroke of a rod R is set up at a distance l3. The movement strokes of the rod R are set up at distances l3, l1 and l2 and so forth on. |
