Patent ID: 7844202
Filing Date: 2010-11-30
Classification: G03G

Abstract:
1. A constant velocity joint comprising: a first rotation body including a second rotation body including a ball holder that holds a ball in each of a plurality of through holes, the through holes being provided on a cylindrical peripheral wall so as to be aligned in a peripheral direction thereof, wherein a rotational driving force of one of the first rotation body and the second rotation body is transmitted to the other one of the first rotation body and the second rotation body through the plurality of balls while the ball holder is inserted into the annular space and the balls held by the ball holder are engaged in the grooves within the annular space, and the outer ring has a multi-layered structure including an innermost layer that is formed of resin material and that defines the inner surface and a metal layer that is formed of metal material and that is positioned outside the innermost layer.