| 摘要 |
PURPOSE:To inhibit the releasing operation of a locking member which locks an operation button at a lock position, by utilizing the operation itself of an electromagnetic device used for holding a recording and reproducing head at a recording and reproducing position. CONSTITUTION:A spring 44 for discharging a floppy disk presses a lock control member 45 as shown by an arrow A and also energizes it clockwise around a guide rod 18 as shown by an arrow B. This lock control member 45 has a lock control tongue piece extending to over the lock member 8 and this lock control tongue piece 45b has an abutting edge part 45c abuts on it to inhibit the lock control tongue piece 45b from rocking counterclockwise when an operating plate 27 is lowered according to the energizing with a pluger 26; when the plunger 26 is turned off, the operating plate 27 is elevated, so the counterclockwise rock of the lock control member 45 is permitted freely. |
