| 摘要 |
PROBLEM TO BE SOLVED: To realize smooth circulation of a roller causing no skew in a load area by forming a plurality of lines of recessed grooves extending in an axial direction to form roller circulating paths on an outer peripheral surface of a spline shaft and an inner peripheral surface of an outer cylinder loosely fitted into this outer peripheral surface and disposing a roller connecting body in each of the roller circulating paths. SOLUTION: A roller spline 1 is constituted by assembling an outer cylinder 3 on a spline shaft 2 slidably via many rollers 10. The outer cylinder 3 is provided with a circulating path 4 circulating the rollers 10 from a load area over a non-load area. This circulating path 4 is arranged between the spline shaft 2 and the outer cylinder 3. The circulating path 4 has load roller rolling path 5 constituted of a pair of recessed grooves and a non-load roller rolling path 6 which is punched in the outer cylinder 3 and connectes both ends of the load roller path 5. The rollers 10 are held by a roller connecting body 30 connected by a connecting body belt 20 and this connecting body belt 20 is formed by being provided with a plurality of holding members in surface-contact with a contour surface constituted of mountain parts 12 and valley parts 13 of the adjacent rollers 10.
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