| 摘要 |
<p>PURPOSE:To prevent a defect such as the damage of a switch by fitting a nut member to operate a switch to control a motor for driving a holder shifting member to the holder shifting member. CONSTITUTION:While a right left side plate 2 retreats to a substrate 7, a switch operating lever 17 is pushed, then, a locking plate 19 is turned in the counter- clockwise direction against a spring force, therefore, a claw 17a of the operating lever 17 is shifted without being engaged with a claw 19a of the locking plate 19, a power source switch 16 is turned on and a motor 12 starts to rotate. Thus, since a screw lever 11 is rotated through a belt 13, a nut member 9 screwed with the screw lever 11 is shifted in the forward direction. Thus, one side fitting plate 6, in which the nut member 9 is fitted, is guided and shifted to a guide bar 8 and a right side plate 2, in which the fitting plate 6 is fixed, is shifted. Consequently, even a left side plate linked through the right side plate 2 and a chassis 1 is guided and shifted to the guide bar 8. Namely, the whole including the chassis 1 is guided and advanced to the guide bar 8.</p> |
