| 摘要 |
PROBLEM TO BE SOLVED: To provide a liftable photographing table capable of detecting a catch no matter how an object is caught between a top board and a floor. SOLUTION: When a base 3A is lowered by a liftably driving section 3B, an object 20 is sometimes caught between a moving frame 8 supporting the top board 2 and a floor surface. At this time, the moving frame 8 is urged upward by the object 20, and the moving frame 8 is displaced upward with respect to a support plate 13. When the moving frame 8 is displaced upward, rollers 12 butting against a lower frame 8b swing, resisting the tensile force of springs 15, and the levers 14b of swinging plates 14 separate from the actuators 16a of limit switches 16. As the result, the limit switches 16 change from an on condition to an off condition and the catch of the object 20 is detected by this signal change. COPYRIGHT: (C)2005,JPO&NCIPI
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