| 摘要 |
<p>PURPOSE:To prevent damage to a magnetic tape by eliminating shaking or unnecessary moving of driving ring even if any vibration or shock is given from the external. CONSTITUTION:For the driving ring 7a and 7b, a pressing mean 10 that applies force so that the tape drawing pins 3a and 3b of the tape drawing mean tend to move toward the direction shown by the arrow (a) and (b) that is opposite to the tape-drawing direction. The mean 10 is composed of a part 12 supported in a freely rotating state by a supporting spindle 11 on the fixed base, a roller 13 which is attached in a freely rotating state to the part 12, and a tension spring 14 which forces the part 12 during the revolution so that the roller 13 presses the inner periphery of the driving ring 7a and 7b. By virture of the above mechanism, if there is a clearance between the rings 7a and 7b and the guide mechanism 9a, 9c that causes shaking, the rings 7a and 7b does not unnecessarily move because of external vibration or shock if given.</p> |
