| 摘要 |
<p>PURPOSE:To enable sure operation with a simple mechanism, by enabling the transmission of torque with a clutch mechanism only at the rotation of a loading ring at unloading of a tape. CONSTITUTION:At tape unloading, a loading ring 4 is turned clockwise opposite to the loading operation to change the state from Fig. (a) to (b). In this case, the slack of tape is wound on a reel 2 of a cassette 1. At unloading, the loading ring 4 turns clockwise and a gear 14 and a clutch arm 17 are coupled with friction through a gear provided at the external circumference of the ring 4. Further, an idler 19 has an elastic member 19a for the external circumference of large diameter and a synchronized gear 19b and the gear 14 are geared. Thus, at unloading, when the ring 4 turns clockwise, the gear 14 turns counterclockwise, the clutch arm also turns counterclockwise, the winding idler 19 is pressed at the external circumference of a supply reel stand 13, the reel stand 13 is turned and slacked tape can be wound.</p> |
