Vehicle steering system
First Claim
1. A motor vehicle steering system comprising a transmission mechanism for transmitting a power of an electric motor to a steering mechanism,wherein the transmission mechanism includes a driving gear, a driven gear and an intermediate gear meshed with the driving gear and the driven gear,wherein the intermediate gear includes:
- an annular teeth forming portion rotatably supported by an outer periphery of a support shaft via a rolling bearing, the support shaft supported by a housing; and
an annular elastic member interposed between an inner periphery of the teeth forming portion and an outer ring of the rolling bearing and interconnecting the teeth forming portion and the outer ring so as to permit torque transmission therebetween,wherein an axis of the support shaft and an axis of the teeth forming portion are mutually offset, whereby an inner periphery of the elastic member is located eccentrically to an outer periphery of the elastic member so as to allow elastic deformation of the elastic member, andwherein a pre-load to press the teeth forming portion against the driving gear and the driven gear is provided by an elastic restorative force of the elastic member.
1 Assignment
0 Petitions
Accused Products
Abstract
A motor vehicle steering system includes a transmission mechanism for transmitting a power of an electric motor to a steering mechanism. The transmission mechanism includes an intermediate gear meshed with a driving gear and a driven gear. The intermediate gear includes: an annular teeth forming portion rotatably supported by an outer periphery of a support shaft via a rolling bearing, the support shaft supported by a housing; and an annular elastic member interposed between an inner periphery of the teeth forming portion and an outer ring of the rolling bearing and interconnecting the teeth forming portion and the outer ring in a manner permitting torque transmission. An axis of the support shaft and an axis of the teeth forming portion are mutually offset, whereby an inner periphery of the elastic member is located eccentrically to an outer periphery thereof. A pre-load to press the teeth forming portion against the driving gear and the driven gear is provided by an elastic restorative force of the elastic member.
22 Citations
5 Claims
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1. A motor vehicle steering system comprising a transmission mechanism for transmitting a power of an electric motor to a steering mechanism,
wherein the transmission mechanism includes a driving gear, a driven gear and an intermediate gear meshed with the driving gear and the driven gear, wherein the intermediate gear includes: - an annular teeth forming portion rotatably supported by an outer periphery of a support shaft via a rolling bearing, the support shaft supported by a housing; and
an annular elastic member interposed between an inner periphery of the teeth forming portion and an outer ring of the rolling bearing and interconnecting the teeth forming portion and the outer ring so as to permit torque transmission therebetween,wherein an axis of the support shaft and an axis of the teeth forming portion are mutually offset, whereby an inner periphery of the elastic member is located eccentrically to an outer periphery of the elastic member so as to allow elastic deformation of the elastic member, and wherein a pre-load to press the teeth forming portion against the driving gear and the driven gear is provided by an elastic restorative force of the elastic member. - View Dependent Claims (2, 3, 4, 5)
- an annular teeth forming portion rotatably supported by an outer periphery of a support shaft via a rolling bearing, the support shaft supported by a housing; and
Specification