Patent ID: 11965582
Assignee: NSK LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A worm reducer comprising:
a housing having a wheel housing portion, and a worm housing portion arranged in a skew position with respect to the wheel housing portion and having a middle section in an axial direction of the worm housing portion which is open to the wheel housing portion;
a worm wheel having wheel teeth on an outer circumferential surface thereof, and supported inside the wheel housing portion so as to be able to rotate freely;
a worm having worm teeth which engage with the wheel teeth on an outer circumferential surface thereof, and supported inside the worm housing portion so as to be able to rotate freely;
a support bearing having an inner ring which is externally fitted to a tip end portion of the worm and an outer ring which is arranged coaxially with the inner ring around the inner ring;
an elastic biasing means elastically biasing the outer ring toward a side of the worm wheel directly; and
an elastic holding means comprising a leaf spring which includes at least portions having a flat plate shape, the portion disposed on both sides of the outer ring or a member other than the outer ring in a second direction orthogonal to a first direction which is a biasing direction by the elastic biasing means and to a center axis of the worm housing portion, and elastically holding the outer ring from both sides in the second direction either directly or through a member other than the outer ring.