Patent ID: 7686696
Filing Date: 2010-03-30
Classification: F16D,Y10S

Abstract:
1. A constant velocity joint comprising: a cup-like outer race having a rotational axis and a partially spherical inner surface provided with plural outer ball grooves, wherein, a predetermined zone of the length of the outer race, a radial distance between the bottom of each outer ball groove and the rotational axis of the outer race invariably increases when moving toward an opening end of the outer race; an inner race having a partially spherical outer surface provided with plural inner ball grooves arranged to correspond in position to the outer ball grooves; plural balls interposed between the outer ball grooves and the inner ball grooves; and a cage interposed between the outer race and the inner race to hold the balls, wherein a contact angle between each ball and each outer ball groove decreases when moving toward the opening end of the outer race in the predetermined zone.