| 摘要 |
PURPOSE:To prevent damage of an internal device by opening a door of a cassette insertion port energized always in the closing direction in interlocking with an eject button operated at cassette ejection. CONSTITUTION:A door 3 opening/closing a loading port 2 is supported freely turnably to a shaft 6 supported in a main body case 1 and energized always in the closing direction of the insertion port 2 by a coil spring 5 supported by the shaft. In loading a cassette 8 to the main body case 1, at first the door 3 closed at all times is pushed and opened by the tip of the cassette 8 to be loaded against the coil spring and the cassette is inserted. When the cassette 8 is inserted up to a prescribed position, the door 3 is released from the cassette 8. In pushing the eject button 4 into the main body case to eject the cassette 8, the ejection mechanism of the cassette 8 is operated, moved in the direction of arrow opposite to that at loading and ejected from the main body case 1. The insertion port 2 of the door 3 is closed by the energizing force of the coil spring 5.
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