| 摘要 |
<p>PURPOSE:To simplify the structure of a cassette holder and to surely prevent a cassette from being incorrectly inserted without accurate working by providing a projection part for preventing the cassette from incorrect insertion and a pressing member the position of which is restricted which restricts the position of the cassette. CONSTITUTION:Levers 13, 14 are pivotally fitted to a joint 15 and projected parts 13c, 14c are moved in apertures 10a, 11a. A projection part 16 for preventing incorrect insertion is formed on the bottom part of the holder 10, the pressing member 17 excited by a spring 18 is fitted to a shaft 19 and its position is restricted by a hooked part 13d of the lever 13. If the cassette is reversely inserted, the leading end of the cassette is abutted upon the projection part 16 and the upper paft of the cassette is pressed by the pressing member 17 to interrupt the insertion of the cassette. When the cassette is correctly inserted, the lever 13 is rotated and the positional restriction by the member 17 is released. Consequently, the cassette can be surely prevented from incorrect insertion without especially the accurate work.</p> |
