| 摘要 |
<p>PURPOSE:To make constitution simple and permit cue operation, etc. by constituting the driving part which makes mode operations of a capstan gear and the mode change-over gears having a cam and providing a brake which is released with operation of the cam gear. CONSTITUTION:A magnetic head 9 is fixed to a head base 7 and is slided forward and backward by a dumping plate 8. FD, FR trigger gears 21, 22 mesh with a capstan gear 15b, and FD, FR cam gears 23, 24 mesh with these. When a lever 18 is operated by the play signal from the reset state that a stopper 26 is held detained to trigger levers 18, 20, the gears 21, 23 revolve and in the place of a notched part 21a, they are strongly pulled by a spring SP3, then the head 9 abuts on the tape by way of a cam 23a and a cam 25 is detained by the lever 18. When the lever 20 is operated in this play state, the head 9 is pushed downward by the operation similar to the above, thereby weakening its press-contact force and permitting cue operation, etc. A brake plate 32 forces a releasing plate 35 downward by the operation of either of the cams 23a, 24a, thereby releasing the brake.</p> |
