TRI-POT CONSTANT VELOCITY UNIVERSAL JOINT

摘要

A tri-pot constant velocity universal joint has a tri-pot member (4) provided with three radially projecting leg shafts (5) each of which supports a roller (7) rotatably via rolling elements (6). The outer circumferential surface of each leg shaft (5) is a spherical surface m having its center on the axis of the leg shaft (5) or a combination of spherical surfaces (m1) positioned at both axial end portions of the leg shaft (5) and having a center on the axis thereof, and intermediate curved surfaces (m2, m3) positioned between the spherical surfaces (m1) and having a radius of curvature larger than that of the spherical surfaces (m1).