| 摘要 |
PURPOSE:To constitute a detaining part of a plate-like body for constituting a case, so that each opposed part is not attached, detached nor engaged, a closed state is obtained by a fact that the detaining part is pushed into a reel hole and is detained elastically, the detaining part is formed by a simple structure, and its height can also be made low. CONSTITUTION:Detaining parts 8, 8, 9 and 9 are constituted of a cylindrical projecting piece (a), a diameter of the projecting piece (a) is formed so that it is pushed into a reel hole 10 of a cassette 3 and can be detained, and when the projecting piece (a) is engaged elastically to a cylindrical inside wall 11 of the reel hole 10, a tip 12 of the projecting piece (a) presses and holes an insdie end circumferential face 13a of a reel 13 from the upper and lower sides, and prevents derivation of an unnatural rotating operation of the reel 13. That is, by only the projecting case (a), a plate-like body 1 can be engaged as a case of the cassette 3, and also, the tip 12 of the projecting piece (a) holds the inside end circumferential face 13a of the reel 13 and gives a rotation stop effect of the reel 13. |
