| 摘要 |
PURPOSE:To complete the dustproof effect by closing an insertion hole with the first shutter before a magnetic sheet pack is inserted and closing the insertion hole with the second shutter after the magnetic sheet pack is inserted. CONSTITUTION:When a magnetic sheet pack 10 is inserted into a bucket and a slider 26A is moved and led into a main body, the following-up piece 142 of a lever 138 is moved from the upper stage 146A of a cam 146 to a lower stage 146B, and the lever 138 is turned counterclockwise around a pin 60 by the energizing force of a spring in accordance with the movement of the piece 142 and the second shutter 132 closes an insertion hole 120. Since the insertion hole 120 is closed while the magnetic sheet pack 10 is inserted in the main body, the dustproof effect is completed. Since the first shutter 124 presses the magnetic sheet pack 10 to the side of a driving shaft by the energizing force of a spring 130, the rising of the magnetic sheet pack 10 is prevented.
|
