| 摘要 |
<p>PURPOSE:To reduce operation force and then power consumption by making use of the friction acting on both a supply reel turntable and a take-up reel turntable as the braking force. CONSTITUTION:When a take-up reel turntable 19 is revolved counterclockwise, the 4th gear part 5 is revolved counterclockwise. Thus a rotor 13 engaging the part 5 is revolved clockwise around the 8th shaft 30, and no voltage is applied to the 2nd solenoid 43 with no pressure contact secured between the 5th projected bar 56 and a rotor 14. Therefore no control is given to the clockwise revolution of the 2nd latch, and the latch 12 is revolved clockwise around the shaft 30 together with the clockwise revolution of the rotor 13. Thus the latch 12 interlocks the 2nd rachet 10. Then the slip is produced by the friction between the disk 19 unified with the 2nd gear part 3 and the rachet 10 unified with the part 5 to revolve the turntable 19 counterclockwise by the revolving power which revolves the disk 19 counterclockwise with the high-speed counterclockwise revolution of a supply reel turntable 17 via a cassette tape although the counterclockwise revolution of the part 5 is stopped. The slip due to the friction is used as the back tension power.</p> |
