Patent ID: 7704148
Filing Date: 2010-04-27
Classification: F16D,Y10S

Abstract:
1. A tripod type constant velocity joint comprising: an outer joint member formed with track grooves at three equi-spaced positions on a circumference of an inner peripheral surface; an inner joint member formed with radially projecting trunnions at three equi-spaced positions on a circumference thereof; and a plurality of rollers rotatably and oscillably carried on the respective trunnions, wherein the rollers roll in the track grooves axially of the outer joint member, wherein a radius of curvature of a generatrix for an outer peripheral surface of each roller is greater than a radius of curvature of the inner surface of said each track groove, wherein solid contact is effected between a section of the outer peripheral surface of a roller and the corresponding track groove based on elastic deformation under a predetermined torque load, the predetermined torque load being equal to or less than ½ of the joint break torque, wherein widthwise opposite ends of the outer peripheral surface of the roller comprise roundings having a radius of curvature smaller than the radius of curvature of the generatrix for the outer peripheral surface of the roller in a direction away from the roller guide groove.