| 摘要 |
<p>PURPOSE:To prevent the fault of a loading device in advance by escaping a worm gear meshing with a worm wheel in the axial direction when a cassette is loaded impulsively. CONSTITUTION:If the cassette 1 is loaded with an excess load and at a speed faster than the moving speed of a holder 20 driven and moved by a motor 4, the load delivery path is opposite to the normal patch, a cassette holder shaft 2 implanted to the holder 20 becomes a follower and its force F is delivered to the worm 9 from the worm wheel 10 via a drive lever 16 and the 4th gear 15 or the like. If the cassette 1 is loaded by an impulse load F, a torque in direction (a) overwhelming an energized force of a spring member 25 is delivered to the worm wheel 10, the worm is moved i the direction (b) and the worm 9 is released from the meshing with the worm wheel 10.</p> |
