| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ball type constant-velocity joint capable of reducing transmission of vibration. <P>SOLUTION: An inner circumferential surface 22 of an outer ring 20 includes a concave inner spherical surface 22a corresponding to a convex outer spherical surface 51 of a cage 50, a cylindrical inner circumferential surface 22b formed close to an opening than the concave inner spherical surface 22a, and a boundary portion 22d between the concave inner spherical surface 22a and the cylindrical inner circumferential surface 22b. The boundary portion 22d on the inner circumferential surface 22 of the outer ring 20 is formed into a curved convex axial cross-sectional shape or a tapered axial cross-sectional shape and to have the same axial cross-sectional shape over the whole perimeter in the circumferential direction. During transmitting a torque, the boundary portion 22d on the inner circumferential surface 22 of the outer ring 20 contacts with the convex outer spherical surface 51 of the cage 50. <P>COPYRIGHT: (C)2013,JPO&INPIT |
