| 摘要 |
PURPOSE:To make a stroke adjustable and eliminate a restriction of the arrangement, by changing an initial tension of compression of the coil spring in the method of turning the adjustment ring substance. CONSTITUTION:By turning operation of an adjustment ring substance 16, its attached protrusion 20, 20, by a cam face 17, 17 of an adjusting cam substance 15, causes the substance 16 to axially move, to change an initial tension of compression of a coil spring 10, making a fine adjustment of the initial load. With a stopper ring 14 removed, by installing this selectively into a concaved groove 13... of different position, the whole of the substance 15, 16 can be axially shifted, to make the operation of coarse adjustment of initial load of the spring 10, and its range can be taken widely as required. |
