Speed reducing or increasing apparatus
AssigneeThk Co., Ltd.
InventorsHideo SAITO, Kotaro KUSHIDA
Life of this patent
Estimating the term…
Abstract
A speed reducing apparatus is provided which can prevent nonuniformity from occurring in output torque. A speed reducing apparatus that causes a first face gear to incline in such a manner as to mesh with a second face gear and causes the first face gear to oscillate in such a manner as to move a meshing portion in a circumferential direction includes a ball spline portion that supports the first face gear in an inclinable manner. The ball spline portion includes an outer ring, an inner ring, a ball capable of rolling along a ball groove of the outer ring and a ball groove of the inner ring, and a cage having a pocket in which the ball is incorporated, and allows axial displacement of the first face gear.
Claims18
A speed reducing or increasing apparatus that causes a first face gear to incline in such a manner as to mesh with a second face gear and causes the first face gear to oscillate in such a manner as to move a meshing portion in a circumferential direction, the speed reducing or increasing apparatus comprising:
- a ball spline portion supporting the first face gear in an inclinable manner, wherein
- the ball spline portion includes an outer ring, an inner ring, a ball capable of rolling along a ball groove of the outer ring and a ball groove of the inner ring, and a cage having a pocket in which the ball is incorporated, and allows axial displacement of the first face gear.
A speed reducing or increasing apparatus that causes a first face gear to incline in such a manner as to mesh with a second face gear and causes the first face gear to oscillate in such a manner as to move a meshing portion in a circumferential direction, the speed reducing or increasing apparatus comprising:
- a ball spline portion supporting the first face gear in an inclinable manner to transmit rotation of the first face gear to an output portion;
- and
- a bearing portion rotatably supporting the output portion, wherein
- the ball spline portion includes an outer ring, an inner ring, and a ball capable of rolling along a ball groove of the outer ring and a ball groove of the inner ring,
- the bearing portion includes an outer ring having an inner surface in which a rolling element groove extending in the circumferential direction is formed, an inner ring having an outer surface in which a rolling element groove extending in the circumferential direction is formed, and a rolling element capable of rolling along the rolling element groove of the outer ring and the rolling element groove of the inner ring, and
- the outer ring of the ball spline portion is formed integrally with the inner ring of the bearing portion.
A speed reducing or increasing apparatus that causes a first face gear to incline in such a manner as to mesh with a second face gear and causes the first face gear to oscillate in such a manner as to move a meshing portion in a circumferential direction, the speed reducing or increasing apparatus comprising:
- a ball spline portion supporting the first face gear in an inclinable manner, wherein
- the ball spline portion includes an outer ring, an inner ring, balls capable of rolling along ball grooves of the outer ring and ball grooves of the inner ring, and a cage having pockets in which the balls are incorporated, and
- the first face gear is formed integrally with the inner ring of the ball spline portion.
Dependencies are inferred from the claim text.