Transmission
AssigneeNsk Ltd.
InventorsTakahisa NOMOTO, Hiroki NISHII, Yuki KOSHIBA, Hiroyasu YOSHIOKA, Hiroshi KATOU
Life of this patent
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Abstract
A transmission includes a first shaft unit connected to a drive shaft of a drive unit. The first shaft unit includes a first shaft having a first shaft raceway surface on an outer peripheral surface thereof, a first output gear provided on the first shaft, a first outer ring attached to a first support part, the first outer ring having a first outer ring raceway surface on an inner peripheral surface thereof, and a plurality of first rolling elements disposed between the first shaft raceway surface and the first outer ring raceway surface.
Claims26
A transmission comprising a first shaft unit connected to a drive shaft of a drive unit,
- wherein the first shaft unit includes:
- a first shaft connected to the drive shaft, the first shaft including a first shaft raceway surface on an outer peripheral surface thereof;
- a first output gear provided on the first shaft and configured to rotate integrally with the first shaft;
- a first outer ring attached to a first support part supporting the first shaft and provided so as to surround the first shaft raceway surface, the first outer ring including a first outer ring raceway surface on an inner peripheral surface thereof, and
- a plurality of first rolling elements disposed between the first shaft raceway surface and the first outer ring raceway surface.
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A transmission comprising a second shaft unit to which power is transmitted from a first shaft unit connected to a drive shaft of a drive unit,
- wherein the second shaft unit includes:
- a second shaft including a second shaft raceway surface on an outer peripheral surface thereof;
- a second input gear provided on the second shaft, wherein the second input gear meshes with a first output gear provided on the first shaft unit and is configured to rotate integrally with the second shaft;
- a second output gear provided on the second shaft and configured to rotate integrally with the second shaft;
- a second outer ring attached to a second support part supporting the second shaft and provided so as to surround the second shaft raceway surface, the second outer ring including a second outer ring raceway surface on an inner peripheral surface thereof;
- and
- a plurality of second rolling elements disposed between the second shaft raceway surface and the second outer ring raceway surface, and
- wherein a rotation axis of a first shaft of the first shaft unit and a rotation axis of the second shaft are parallel to each other.
A transmission comprising a differential gear unit to which power is transmitted from a first shaft unit connected to a drive shaft of a drive unit, via a second shaft unit,
- wherein the differential gear unit includes:
- a differential case including a third shaft raceway surface on an outer peripheral surface thereof;
- a third input gear provided on the differential case, wherein the third input gear meshes with the second output gear provided on the second shaft unit and is configured to rotate integrally with the differential case;
- a differential mechanism provided in the differential case;
- a third outer ring attached to a third support part supporting the differential case and provided so as to surround the third shaft raceway surface, the third outer ring including a third outer ring raceway surface on an inner peripheral surface thereof;
- and
- a plurality of third rolling elements disposed between the third shaft raceway surface and the third outer ring raceway surface, and
- wherein a rotation axis of a first shaft of the first shaft unit, a rotation axis of a second shaft of the second shaft unit, and a rotation axis of the differential case are parallel to each other.
Dependencies are inferred from the claim text.