| 摘要 |
PROBLEM TO BE SOLVED: To efficiently execute working for various kinds of maintenance, etc., from the front side of a device main body by restricting the movement in an opening direction of the main body to height positions being different on both end sides in an axial direction of a turnable supporting shaft. SOLUTION: For opening an upper main body U, the locking part of a lever is removed from a locking part formed on a lower main body side, to release locking. At this time, a slider 21 and a slider shaft 23 on an energizing member 18 are pushed up by the energizing force of the energizing member 18 and a supporting shaft stool 22 attached to an upper main body frame 9 is turned around the turnable supporting shaft 16 as well, so that the upper main body U is opened. Since the slider shaft 23 is moved up until it is abutted on the top end of a guiding groove 20 for guiding the slider shaft 23, the frame of the upper main body U is elastically deformed according to the moving up of the slider shaft 23 as well, to be stopped in an opened state at a fixed angle ofαa orαb Therefore, the upper main body U is opened in a state where the front side of the device main body is more greatly opened.
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