DOOR DEVICE FOR OPTICAL DISK

PROBLEM TO BE SOLVED: To provide a highly reliable door device for an optical disk having no secular change. SOLUTION: (a) The tip end of an ejected optical disk 6 is abutted on a dustproof door 2, and the dustproof door 2 is pressed by the optical disk 6 and is rotated in the opening direction of the door around the central hole 2a of rotation. (b) When ejection of the optical disk 6 is made to progress, the optical disk 6 is pushed upward by a triangular rib 1a and an optical disk insertion slit 4c. (c) A cam 2c is rotated while deforming a spring 3, the dustproof door 2 is held in the opening state of the door by energizing force of the spring 3, and the optical disk 6 is ejected passing through the under side of the dustproof door 2. Although the optical disk 6 passes through in the state of being held by the dustproof door 2, the triangular rib 1a and the optical disk port 4c by elastic energizing force of the spring 3, since an arc surface 2d comes into contact with the optical disk 6 at an angle, the arc surface 2d comes into contact with only the outer peripheral part of the optical disk 6. An abrasion is never generated because the arc surface does not come into contact with the flat surface part of the same. Also, the highly reliable dustproof door 2 having no secular change is obtained because it is a rigid body.