| 摘要 |
PROBLEM TO BE SOLVED: To provide an opening/closing door structure which obtains a large opening without requiring a large space outside a device. SOLUTION: The opening/closing door structure for the machining device cover includes a frame body 4 surrounding an opening part; a first door 8 having one end rotatably supported on the frame body with a first hinge 10; a second door 12 having one end rotatably supported on the other end of the first door with a second hinge 14; a first lock mechanism 21 locking the first door with the first door releasably closed; and a second lock mechanism 24 locking the second door with the second door releasably closed. The first door becomes flush with second door in a closed state, and when the second door is rotated to the outer side by approximately 180°around the second hinge with the first door locked while the first door closed, the second door is constituted foldably to be superposed on the first door. The first lock mechanism of the first door is released from the state of the second door folded such that the second door is superposed on the first door by rotating the second door to the outer side, thereby, the first door becomes integrated with the second door and is rotated to the outside of the device around the first hinge, to fully open the opening part. COPYRIGHT: (C)2011,JPO&INPIT
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