| 摘要 |
<p>PURPOSE:To reduce the number of parts and to improve an operation feeling by linking a cassette holder and substrate freely rotatably respectively by one link and fitting the gear biting with the both parts of the fixed gears arranged respectively on the cassette holder and substrate freely rotatably to the link. CONSTITUTION:After loading a cassette holder 1 on a cassette a pushing down force is given to the cassette holder 1, then a pushing down force acts on a link 3 as well via a pin 3a, which is turned in a clockwise direction centering around a pin 3c. By the turning of link 3 a gear 5 is rotated in a clockwise direction along a fixed gear 2a, by this rotation the cassette holder 1 is turned as well via a fixed gear 1a and the cassette holder 1 reaches in a 2nd descent state with holding the position fixed by the tooth number ratio of the fixed gears 1a, 2a and the length of the link 3. It becomes therefore freely foldable by one link 3 (whereas two in all) and a rotary gear 5. Thus the number of parts is reduced and an operation feeling is improved.</p> |
