Auxiliary tool for control pinion, has handle that is rotatably connected to support portion and is set with confinement layer in which one end of movable element is housed to limit movement range of support portion relative to handle

摘要

The auxiliary tool has a support portion (10) whose one end is provided with a pin (11) and another end is equipped with sliding groove (12). A movable element (20) is movable accommodated in sliding groove. One end of movable element is provided with a stop portion (222) which is located at recess portions on periphery of control pinion adjusting elements. A handle (30) is rotatably connected to support portion and is provided with confinement layer (31) in which another end of the movable element is housed to limit the range of movement of the support portion relative to handle.