| 摘要 |
<p>PURPOSE:To suppress the vibration of an arm and to stabilize a tape travel by engaging a torsion coil spring with a rotary shaft and applying a rotary energizing force to a tension arm, and pressing its bearing part in a thrust direction and eliminating its play. CONSTITUTION:The rotary energizing force is applied to the tension arm 9 engaging one end of a brake band 4 wound around a brake drum 3 provided between the bearing part 19 engaging rotatably the rotary shaft 8 implanted on a chassis 1 and a tape reel turntable 2 where a tension post 10 contacting a tape 7 and a tape reel 6 are mounted at the tip thereof, and the torsion coil spring 11 which presses the bearing part 19 in the thrust direction is engaged with the rotary shaft 8. Consequently, vibration due to the play of the bearing part 19 is eliminated to make the tape travel stably. A sheet type friction mem ber 12 is provided between the bearing part 19 and chassis 1 to preclude the vibration more securely.</p> |
