Patent ID: 8029374
Filing Date: 2011-10-04
Classification: F16D,Y10S

Abstract:
1. A fixed constant velocity universal joint comprising: an outer member having an inner spherical surface on which a plurality of track grooves are formed; an inner member having an outer spherical surface on which a plurality of track grooves are formed; a plurality of balls that are interposed between the track grooves on the outer member and the track grooves on the inner member and that transmit torque; and a cage that has pockets housing the balls and that is interposed between the outer member and the inner member, wherein the cage has four of the pockets including a pair of long pockets and a pair of short pockets, the long pockets having a circumferential direction spacing that is wider than a circumferential direction spacing of the short pockets, and each of the long pockets having opposing long sides, the pair of long pockets are shifted by 180 degrees along a circumferential direction and the pair of short pockets are shifted by 180 degrees along the circumferential direction, the long pockets and the short pockets are alternately disposed along the circumferential direction, each of the long pockets houses two of the balls and each of the short pockets houses one of the balls, and the cage has a plurality of projections, at least one of the projections projecting from one of the opposing long sides into each of the long pockets and forming two ball housing sections connected by a slit.