| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary feeder which supplies power to a moving body, when the moving body moves around a predetermined axis. SOLUTION: A truck which can run around a sports field, etc., which is provided with a bearing 23 for a swing feeder, and a swing center shaft 22 is fitted on a moving plane 10 side, in such a sway as to be able to project or sink from the moving plane 10. After the center shaft 22 is raised and fitted into the bearing 23, stationary-side current collectors 27 are raised inside the center shaft 22. The stationary-side current collectors 27 have collector rings. When the moving collectors 26 fitted to the truck are exposed, the current- collecting terminals of the moving collectors 26 slidably make contact with the internal peripheral surfaces of the current collector rings of the stationary- side collectors 27 and are connected electrically.
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