| 摘要 |
<p>PURPOSE:To set freely the opening speed of a cassette holder by providing the margin of speed between a gear and a stalling speed device main body so as to give a speed range not giving stalling. CONSTITUTION:When the stopper of a cassette holder 3 is released from the closing state, a cassette tape 11 is extracted from a mechanism 6 by the opening force of a spring 12. When the cassette tape 11 is parted completely from the mechanism 6, then the non-stalling section of a turning mechanism stalling device is finished. In this case, a gear 15 does not mesh with a stalling shaft 16 but is in idle state, then no stalling force of the turning mechanism stalling device 17 is not exerted to the cassette holder 3. Then the gear 15 meshes with the stalling shaft 16, and the stalling force by the viscosity of grease sealed between the stalling shaft 16 and the turning mechanism device main body 17 is transmitted to the gear 15 to keep opening the cassette holder 3 up to the opening position at the constant speed. Thus, the opening speed of the cassette holder is set freely by the stalling force.</p> |
