Ntn Corporation

Ritsuki Sakihara

Tatsuro Sugiyama

Kazuhiro Azuma

A plunging type constant velocity universal joint includes outer and inner joint members that transmit torque therebetween through intermediation of a ball while allowing angular displacement. The outer joint member is configured to receive an internal component comprising the ball and the inner joint member so that the internal component is slidable in an axial direction. The universal joint also includes a stopper mechanism that has an annular groove, and is configured to restrict axial displacement of the internal component by allowing the ball to interfere with a circlip fitted to the annular groove. The annular groove has a conical surface, which is inclined with respect to an axial direction so that the conical surface and an axial tangent line at a contact point between the ball and the circlip form a wedge angle opened from an opening end portion of the outer joint member toward a far side.

Sliding-type constant velocity universal joint and method for manufacturing same

Provided is a tripod type constant velocity universal joint (), including: an outer joint member () having track grooves () formed at trisected positions in a circumferential direction to extend in an axial direction; a tripod member () including leg shafts () radially projecting from trisected positions in the circumferential direction; and rollers () fitted in a freely rotatable manner about the leg shafts (), respectively, and received in the track grooves (), respectively, in which a radially outer surface () of each of the rollers () is formed of a surface unsubjected to grinding or cutting work after heat treatment.

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Shizuoka, Japan

Ritsuki Sakihara