3 Inner Joint Part and Roller Element of a Tripod Constant Velocity Joint

摘要

The invention relates to an inner joint part (1) of a triaxial constant velocity joint (2), said inner joint part comprising a hub (3), a transition zone (48) adjacent said hub (3) , Said hub (3) having three axially extending projections (5) extending outwardly in the radial direction (6) from the axis of rotation (4) and said hub (3) A circumferential surface (9) forms a first surface line (10) extending in said first plane (8), wherein an inner sphere (13) having an inner sphere radius (19) is specified, said inner sphere Contacting an opposite contact point (52) of said first surface line (10); The first surface line 10 of each protrusion 5 at least extends into a first angular range 20 adjacent each of the contact points 52 outside the inner sphere 13; A second surface line 15 is present in the second plane 16; And the second surface line 15 is in contact with the inner sphere 13 at the contact point 60 only at the height 11 of the maximum diameter 12 of the protrusion 5 and in the inner sphere 13 In a second angular range (34) adjacent the respective contact point (60). The present invention also relates to a roller member (28) of a triangular constant velocity joint (2) having a convex inner circumferential surface (29), wherein said extension line (25) of said inner circumferential surface (29) And the size of the extended line radius is the largest in the central zone and the size of the extended line radius 23 is smaller in the adjacent zone 62. [