| 摘要 |
A device for raising and lowering an adapter. A slider having an adapter fastened thereto is assembled to a frame such that the slider can be raised and lowered, and hinge parts of a lever moving member having a stop lever assembled thereto are assembled to hinge parts of the frame by way of springs. The stop lever is always biased toward stopper grooves of the slider by spring force of the springs so that engagement teeth of the stop lever are engaged in the stopper grooves so as to maintain the slider in a fixed state. When the stop lever is moved rightward by manipulating the lever moving member, the engagement teeth of the stop lever are disengaged from the stopper grooves of the slider so that the slider can be freely raised and lowered.
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