Patent ID: 11878747
Assignee: NABTESCO CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  F | IPC B

Claim 0:
1. A speed reducer comprising:
an input rotating body rotatable when acted upon by power from a drive device;
a base block supporting the input rotating body rotatably;
a speed reducing mechanism unit for reducing a speed of rotation of the input rotating body; and
a tubular case externally covering the speed reducing mechanism unit and the base block, the tubular case being assembled onto the base block such that the tubular case and the base block are rotatable relative to each other, the tubular case having axial ends,
wherein the speed-reduced rotation from the speed reducing mechanism unit is output from one of the tubular case and the base block,
wherein the base block has a fixture flange integrally formed therewith, and the flange extends from a radially inner region within the tubular case radially outward beyond an outer peripheral surface of the tubular case,
wherein the base block has an annular groove open axially, and the annular groove is positioned between a substrate portion radially inside the tubular case and the fixture flange, and
wherein the annular groove houses one of the axial ends of the tubular case therein.