| 摘要 |
<p>PROBLEM TO BE SOLVED: To simplify a cassette loading mechanism and a casstte extruding mechanism by intermittently operating a first rack with projecting part of the first rack and the notched part provided in the nearly peripheral part of a driving gear and also a second rack with the cam groove of the second rack and the guide member of a main holder, respectively. SOLUTION: A driving gear 27 is provided with two kinds of concentric gear parts, and a side plate 9 side gear part is provided with a notched part 29. An inner rack 12 is provided with the tooth part meshing with the driving gear 27 in the upper part and the projecting part 16 engaging with the notched part 29 of the driving gear 27 in the vicinity of the tooth part, and it is movable in the moving direction of a cassette. An outer rack 17 is provided with the tooth part meshing with the driving gear 27 in the upper part, and it is movable in the moving direction of the cassette. The main holder 1 engaging with the inner rack 12 and the sub-holder 5 engaging with the outer rack 17 are operated using this constitution, and the cassette 30 is carried up to the position where recording and reproducing can be executed.</p> |
