| 摘要 |
<p>PURPOSE:To prevent securely the erroneous insertion of a cassette, by providing a securing member for preventing erroneous insertion to a link for ascending and descending of a cassette holder in order to restrict the swinging or make free swinging of the securing member by a guide groove. CONSTITUTION:A linear material 16 for preventing erroneous insertion is engaged and fitted to a round hole 12 of a link 12 for ascending and descending of a cassette holder 2 so that the linear material 16 can move in a guide groove 14. If a cassette half 1 is inserted with up-side-down position in an arrow mark (a) direction when the holder is in ascending position, the cassette half touches the linear material 16 and is prevented from entering further, because the movement of the linear material 16 in arrow mark (b) direction is restricted by the guide groove 14. If the half 1 is correctly inserted, it passes the lower part of the linear material 16 to be inserted. Since the linear material 16 can swing upward at a cassette loading position, the loading of the half 1 is not prevented. As the result, the erroneous insertion of the cassette is surely prevented.</p> |
