JP2009507195A5 - - Google Patents

Claims (1)

A ball constant velocity rotary joint (11) in the form of a counter track joint, the joint outer part (12) comprising a first outer ball track (16) and a second outer ball track (18); A joint inner portion (14) comprising a first inner ball track (17) and a second inner ball track (19) is provided, the first outer ball track (16) being A first track pair (16, 17) is formed together with the first inner ball track (17), and the first track pair (16, 17) extends in the first axial direction Ri1. (Α), the second outer ball track (18) and the second inner ball track (19) form a second track pair (18, 19), the second track Pair (18 19) extends in the second axial direction Ri2 (β), and a plurality of balls (20) are guided in both track pairs, and the ball center point Z of the balls (20) is the joint center. A ball cage (21) provided with a plurality of cage windows (22) distributed in the circumferential direction is provided at the rolling circle radius PCR centered on the point M, and the ball cage (21 The ball (20) is held in one common plane E and is guided to a plane that bisects the angle when the joint is bent, and the joint outer portion (12) Relative axial movement between the ball cage (21) and between the ball cage (21) and the joint inner part (14), between the joint outer part (12) and the joint inner part (14), respectively. S possible In those forms in which the axial play that is provided,
The ratio between the axial play S and the rolling circle radius PCR of the ball (20) is 0.01 to 0.09 with the joint extended, respectively (0.01 <S / PCR <0. 09) A ball constant velocity rotary joint.