| 摘要 |
<p>PROBLEM TO BE SOLVED: To make possible miniaturizing and lightening a mechanism by supporting and slidably fitting plural pieces of rotation support shafts of a cassette holder to a circular arc guide groove making a rotational center of an opening/closing member a radial center. SOLUTION: The base end of the first holder 31 of the cassette holder 3 is fitted rotatably to support walls 11 provided on front end both edge parts of a main chassis 1. The first holder 31 projects circular arc leg parts 33 from front parts of both side surfaces 30, and respective circular arc first grooves 41 and second grooves 42 making the rotational center P of the first holder 31 the radial center are opened and provided on the front parts of both side surfaces 30 and the front parts of the circular arc leg parts, and thus, the guide grooves 4 for rotatively opening/closing the cassette holder 3 are constituted. A second support shaft 51 exists downward the rotational center P of the first holder 31 and on the position that the back/forth direction is the same as a motor 6 to be fitted to the second groove 42. The cassette holder 3 is rotation guided smoothly by the first, second support shafts 5, 51 slidably fitted to the circular arc guide groove 4.</p> |
