| 摘要 |
<p>PURPOSE:To surely prevent a collision of magnetic head and cassette half in the case the cassette half is not loaded on the specific position, by providing a preventive function on a locking pawl of cassette holder. CONSTITUTION:The locking pawl 90 is formed at the side face of cassette holder 88. In the case a closing manner of the cassette holder 88 is incomplete, the locking pawl 90 is abutted to a holding part 81 and becomes the state that a holding plate 76 is on the way of moving in the direction of arrow A against a tension spring 86. In this state, when an operation rod 14 is pushed in the direction of arrow against a torsion spring 22, a lock plate 25 is also moved in the direction of arrow C, but a fitting part is collided to a protrusion 80 of the holding plate 76, and the operation of lock plate 25 is interrupted. Thereby, the movement of operation rod 14 is also interrupted, and the magnetic head 2 on a substrate 1 is stopped before it is collided with the end face of cassette half 91. When the locking pawl 90 is inserted to the specific position, the interruptions of operation for each operating button are released.</p> |
