| 摘要 |
PROBLEM TO BE SOLVED: To reduce manufacturing cost by simplifying the structure of a slider, enhance the efficiency of changing a worn slider by eliminating uselessness in the change, and enhance rotational performance by reducing sliding resistance. SOLUTION: A turntable is provided with a fixed stand 20 for grounding, and a movable stand 30 which is movably supported by the fixed stand 20 for mounting a device. The fixed stand 20 is arranged with a rail 22 which is provided with a bottom wall having a circumferential flat surface formed along the circumference, centering the center of rotation of the movable stand 30, and a surrounding wall having a circumferential vertical surface formed along the circumference which is located at the outer edge of the bottom wall coaxial with the the circumference of the movable stand 30. The movable stand 30 is provided with a movable part 32 having an upper wall 33 that faces the bottom wall of the rail 22. A plurality of resin sliders 50 are detachably provided on the upper wall 33 of the movable part 32, being slidably in contact with the circumferential flat surface of the bottom wall of the rail 22. Also, a plurality of rollers 60 are provided so as to roll about on the vertical surface of the surrounding wall of the rail 22. COPYRIGHT: (C)2004,JPO
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