| 摘要 |
<p>PURPOSE: To prevent noise in a drive device from leaking out to the outside by making the door structure a double structure consisting of a turning door and a slide door without damaging an operability. CONSTITUTION: When a motor 36 is rotated, pinions 33 and 34 are rotated via rotation transmitting parts 41 and 42, and the slide door 2 is slidden downward from its closing state, and when it comes into a cassette inserting port opening position, light between a light emitting part 16a and a light receiving part 16b of a photointerruptor 16 is interrupted by a photointerrupting plate 23 to stop the motor 36. Then, the turning door is opened in accordance with inserting a cassette into the cassette inserting port, and is automatically closed upon completion of the insertion. When the cassette is loaded, the motor 36 is turned on and is reversely rotated, so that the slide door 2 is slidden upward by the pinions 33 and 34, and when the door 2 is brought into a cassette inserting port closing position, the light between the light emitting part 17a and the light receiving part 17b is interrupted by the photointerrupting plate 23 to stop the motor 36. Thus, by double closing the cassette inserting port by the turning door and the slide door, noise is prevented from being leaked out.</p> |
