| 摘要 |
PROBLEM TO BE SOLVED: To provide a clutch unit capable of preventing component parts from being damaged by over-load even when large torque equal to or exceeding the set value to signify over-load is applied. SOLUTION: The clutch unit has an input outer ring 1 and an output inner ring 12 which are installed with possibility of rotating in the regular and the reverse direction relative to a housing 16, a roller 13 able to make engagement and disengagement interposed between the input outer ring 1 and the output inner ring 12, and a retainer 14 to retain the roller 13, and using the retainer 14, the roller 13 is changed over between engagement and disengagement by controlling the rotational phase difference between the input outer ring 1 and the retainer 14 through application of a frictional resistance to the retainer 14 for the rotation of the retainer 14 relative to the housing 16 through the relative rotation with the input outer ring 1, wherein the output inner ring 12 is split into two members 12a and 12b, which are joined together so that a slip is generated between their joining surfaces 10a and 10b when an excessive torque is applied. COPYRIGHT: (C)2005,JPO&NCIPI
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