| 摘要 |
PROBLEM TO BE SOLVED: To provide a tripod joint having a suitably improved support means prepared for falling of a roller structural element with an outer joint set to its reference by constituting running surfaces of the roller element bored into spherical shape or tracks bored into cylindrical shape. SOLUTION: In a constant velocity rotation joint of a tripod structure which supports a roller structural element 921 comprising a roller support element 991 and a roller element 1061 to the bottom surface 1021 of a recess 911 relative to an outer joint and to guide shoulder surfaces 971 , 981 extending longitudinally adjacent to tracks 931 , 941 of the outer joint in the radial inside respectively, each roller element 1061 has an annular shoulder surface 1141 continuing to a spherical running surface 1101 in the radial inside and the annular shoulder surface is so constituted as being bent into a spherical shape and having its curvature radius larger than that of the running surface 1101 in its cross section.
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