| 摘要 |
PROBLEM TO BE SOLVED: To position covers 50, 60 in a prescribed position with a small operational burden. SOLUTION: An interlock mechanism is provided with a lever 20 supported by a stationary frame 11 so as to be rotatable and movable in the lengthwise direction, a tension coil spring 30 interposed between the stationary frame 11 and the lever 20, a receiving part 40 for positioning the lever 20 in a lock position and allowing a movement to a lock release position and the covers 50, 60. When the cover 60 is closed when the lever 20 is the lock position and the cover 50 is an opening state, the cover 60 abuts on the other end of the lever 20, so that the movement is checked, and when the cover 50 is closed further, the lever 20 is forcibly rotated to the lock release position by the cover 50, so that the cover 50 is completely close, and when the cover 60 is closed, the lever 20 is moved lengthwise to one end since the other end is forced by the cover 60, so that the cover 60 is completely closed.
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