| 摘要 |
<p>PURPOSE:To enable the advance for the head stage by operating the two head stage locking mechanisms through the storage of the cassette and the closure of the cover body, thus avoiding the accident which is caused by the mistaken loading of the cassette. CONSTITUTION:When cassette A is loaded, projection bar 11f is pressed by cassette A against the spring force of spring 11b. Thus the engagement is released between engagement pawl 11e and lock slit 4d of head turntable 4 to secure the advancing for head 4. On the other hand, step part 12c engaging extended projection part 4e of stage 4 and projection bar 12d are formed to lock plate 12a which is born to chassis 1 via pin 1d and receives the rotary power via spring 12b. When cover body 8 is closed, engagement catch 8b presses projection bar 12d to give rotation to plate 12a. And thus the engagement is released between part 12c and turntable 4. Stage 4 has no advance in case the correct loading is not given to both cassette A and body 8, thus avoiding the mistaken loading of the cassette.</p> |
