| 摘要 |
<p>PURPOSE:To detect the rotation and the stop of a rotary axis by a simple constitution by constituting a rotation detecting lever of an annular part attached so as to be freely rotatable through a friction member to the rotary axis, and a mobile body supported through a flexible arm part by the annular part. CONSTITUTION:Between the first and the second gear parts 30a, 30c of a cam gear part 30, a friction member is interposed, and when the rotational resistance of a part which is engaged to the gear part 30c and rotation is small, the gear part 30c rotates in accordance with the revolution of a driving motor 17, but when the resistance is large, the part does not rotate. Also, the first and the second reel base gears 33, 34 which are coaxial and positioned on the lower face of a chassis substrate 5 are attached to the first and the second reel bases 6, 7, and when a reverse gear 35 is engaged to the gear 34 and a reproducing lever 24 is brought to pressure operation in the forward moving direction, an intermediate gear 31 moves between the gear 33 and the reverse gear 35 by an intermediate supporting lever 32. In such a way, by the rotation of reel hubs 1, 2, a tape 3 is take-up in the normal or reverse direction.</p> |
