| 摘要 |
<p>PURPOSE:To make it unnecessary to use an air damper, etc. by winding a coil member by making it contact closely to the outside circumference of a turning shaft which is free in the reciprocating turning, and pressing one end side or the other end side of the coil member in the direction for loosening the coil member by a pressing part in accordance with the turning direction of the turning shaft. CONSTITUTION:A pair of bearing parts 5 support a turning shaft turnably to the inside of an apparatus body 1, and pivotally supporting pieces 7A, 7B provided to the left and right of one end of a cassette holder 2 are fixed to the turning shaft 6, so that the turning shaft 6 and the cassette holder 2 are turned as one body. Also, an opening spring 8 is wound around the turning shaft 6, both ends of this spring 8 are engaged with one pivotally supporting piece 7A and the apparatus body 1, and the cassette holder 2 is energized in the direction projecting toward outside from the apparatus body 1. Also, a detaining mechanism 9 is provided on the inside of the apparatus body 1, a detaining lever 11 is energized counterclockwise by a spring 12, and a detaining pawl 11A provided to one end of the detaining lever 11 is engaged with an engaging stepped part 13 provided to the turning end side of the cassette holder 2, by which the cassette holder is held in a loading position.</p> |
