| 摘要 |
PROBLEM TO BE SOLVED: To simplify a configuration of a screw feeding device and reduce weight of the screw feeding device even when moving a cargo having large load by the screw feeding device. SOLUTION: This screw feeding device 1 is provided with a bolt body 6 supported on a fixed side member 3 and a movable body 9 screw-fitted in the bolt body 6 to reciprocate and move C, D freely in accordance with reciprocation and turn A, B of the bolt body 6. The movable body 9 is provided with a nut body 13 screw-fitted in the bolt body 6, extending in the axial direction of a shaft axis 12 crossing a shaft axis 2 orthogonally, and having a circular column shape and a movable body body 15 fitting the nut body 13 to cover each end face in the axial direction of the shaft axis 2 of the nut body 13 from its outside and having a pair of through holes 33 passing through a halfway part in the axial direction of the bolt body 6. The nut body 13 for the movable body body 15 can turn relatively around the orthogonally crossing shaft axis 12, and the halfway part of the bolt body 6 is fitted in each through hole 33 in play. COPYRIGHT: (C)2004,JPO
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