Steering system
AssigneeJtekt Corporation
InventorHideo KOMETANI
Life of this patent
Estimating the term…
Abstract
A steering system includes: a housing; a rack shaft extending in an axial direction so as to pass through the housing and including a first rack and a second rack on its outer circumference so that they are separated from each other in the axial direction; a first pinion shaft including a first pinion that has helical teeth and meshes with the first rack; a second pinion shaft including a second pinion that has helical teeth and meshes with the second rack, the second pinion shaft being placed on the same side as the first pinion shaft; and a rack bush placed between the pinion shafts in the axial direction of the rack shaft, held by the housing so as to support the rack shaft slidably in the axial direction, and limiting a movement of the rack shaft in a direction substantially parallel to both of the pinion shafts.
Claims17
A steering system comprising:
- a housing;
- a rack shaft extending in an axial direction so as to pass through the housing and including a first rack and a second rack on its outer circumference so that they are separated from each other in the axial direction, the first rack and the second rack having respective helical teeth inclined toward the same side relative to the axial direction;
- a first pinion shaft including a first pinion that has helical teeth and meshes with the first rack;
- a second pinion shaft including a second pinion that has helical teeth and meshes with the second rack, the second pinion shaft being placed on the same side as the first pinion shaft relative to a plane including a central axis of the rack shaft and parallel to a central axis of the first pinion shaft;
- and
- a rack bush placed between the pinion shafts in the axial direction of the rack shaft, held by the housing so as to support the rack shaft slidably in the axial direction, and limiting a movement of the rack shaft in a direction substantially parallel to both of the pinion shafts.
A steering system comprising:
- a housing;
- a rack shaft extending in an axial direction so as to pass through the housing and including a first rack and a second rack on its outer circumference so that they are separated from each other in the axial direction, the first rack and the second rack having respective helical teeth inclined toward the same side relative to the axial direction;
- a first pinion shaft including a first pinion that has helical teeth and meshes with the first rack;
- a second pinion shaft including a second pinion that has helical teeth and meshes with the second rack, the second pinion shaft being placed on an opposite side to the first pinion shaft relative to a plane including a central axis of the rack shaft and parallel to a central axis of the first pinion shaft;
- and
- a rack bush placed between the pinion shafts in the axial direction of the rack shaft, held by the housing so as to support the rack shaft slidably in the axial direction, and limiting a movement of the rack shaft in a direction substantially parallel to both of the pinion shafts.
A steering system comprising:
- a housing;
- a rack shaft passing through the housing and having a first end portion and a second end portion which are opposite to each other in an axial direction, the rack shaft including, on the same side relative to a central axis thereof, a first rack close to the first end portion out of these end portions, and a second rack close to the second end portion out of the end portions;
- a first pinion shaft including a first pinion meshing with the first rack;
- a second pinion shaft including a second pinion meshing with the second rack, the second pinion shaft being placed on the same side as the first pinion shaft relative to a plane including the central axis of the rack shaft and parallel to a central axis of the first pinion shaft;
- a first rack guide held by the housing and biasing the rack shaft from a back of the first rack toward the first pinion;
- a second rack guide held by the housing and biasing the rack shaft from a back of the second rack toward the second pinion;
- a second rack bush supported by the housing, supporting the first end portion of the rack shaft slidably in the axial direction, and biasing the rack shaft toward the first pinion;
- and
- a first rack bush supported by the housing, supporting the first end portion of the rack shaft slidably in the axial direction, and biasing the rack shaft toward the first pinion and the second pinion.
Dependencies are inferred from the claim text.