| 摘要 |
<p>The present invention provides a light and compact slide-type constant velocity universal joint that can have a maximum operating angle of 30° or more through optimization of a ball contact angle relative to ball grooves, a ball contact ratio, and a cage offset amount. The present invention is the slide-type constant velocity universal joint including an outer ring 12 in which six linear ball grooves 12b are formed on a cylindrical inner circumferential surface 12a in an axial direction, an inner ring 13 on which six linear ball grooves 13b are formed on a spherical outer circumferential surface 13a in the axial direction and a connecting hole for connecting a shaft is formed in a center section, six torque transmission balls 14 disposed on ball tracks formed by a pair composed of the a ball groove 12b on the outer ring 12 and a ball groove 13b on the inner ring 13, and a cage 15 having pockets 15c for storing the torque transmission balls 14, a convex spherical outer circumferential surface 15a that is in contact with and guided by the inner circumferential surface 12a of the outer ring 12, and a concave spherical inner circumferential surface 15b that is in contact with and guided by the outer circumferential surface 13a of the inner ring 13 and in which a spherical surface center O C0 of the outer circumferential surface 15a and a spherical surface center O CI of the inner circumferential surface 15b are offset to opposite sides of a pocket center O in the axial direction. In the slide-type constant velocity universal joint, a ratio of ball diameter to outer ring outer diameter is 0.21 to 0.25, a ratio of ball pitch diameter to outer ring outer diameter is 0.64 to 0.68, a contact angle of the ball groove is 30° to 35°, a contact ratio of the ball groove is 1.02 to 1.08, and a ratio of cage offset amount to ball pitch diameter is 0.07 to 0.09.</p> |
