| 摘要 |
PROBLEM TO BE SOLVED: To improve working efficiency when detaching a front door from a body frame. SOLUTION: When the front door is attached to the body frame, an operation part 34 is operated to rotate an operation arm 31 in the direction of C and an upper spindle 25 is positioned in the position of an upper door support hole 21a with the upper spindle 25 stored inside an upper guide hole 27a. When releasing the operation of the operation part 34, the upper spindle 25 is moved upward by the energization of a coil spring 28 and inserted into the upper door support hole 21a. When the front door is detached from the body frame, the front door is opened, then the operation part 34 is operated to rotate the operation arm 31 in the direction of A and the operation part 34 is positioned in a restriction opening. When the operation part 34 is positioned in the restriction opening, the operation arm 31 becomes rotatable in the direction of B, and when the operation arm 31 is rotated in the direction of C, the upper spindle 25 is downward moved against the energization of the coil spring 28 and the upper spindle 25 is removed from the upper door support hole 21a. In the state, the front door 5 is detached from the body frame 3. COPYRIGHT: (C)2008,JPO&INPIT
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