| 摘要 |
<p>PURPOSE:To sufficiently take the required absorption stroke against a shock by providing a clutch gear means by which no torque is transmitted by separating a pair of gear members when the torque exceeding a constant level is applied to a holder driving means. CONSTITUTION:The clutch gear means rotated integrally with a pair of gear members 9a, 9b in which pressing members 22 to pressurize contact side planes mutually when the torque less than the constant level is applied and by which no torque is transmitted when the torque exceeding the constant level is applied by the separation of the pair of gear members 9a, 9b is provided. Thereby, when a cassette 3 is inserted to a cassette holder 2 with a power exceeding required level, the run idle of the gear member on one side is performed, and the cassette holder 2 is moved in the direction of loading position of the cassette, then, a shocking force can be absorbed, therefore, it is possible to sufficiently take the absorption stroke as required.</p> |
