Patent ID: 11892060
Assignee: NSK LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 1:
2. The frictional roller reducer according to claim 1, wherein
the rolling surface has a pair of intermediate roller side inclined surface portions arranged on both side portions in the axial direction, inclined in directions in which an outer diameter becomes smaller as going away from each other in the axial direction, and coming in rolling contact with the inclined surface portions, and has a connection surface portion arranged in an intermediate portion in the axial direction and having an outer diameter that does not change in the axial direction or a radius of curvature of a generating line thereof is larger than a radius of curvature of a generating line of the intermediate roller side inclined surface portions, and coming in rolling contact with the other roller of the sun roller and the ring roller.