US 2013/0153326 A1Published application

Steer-by-wire steering system

OwnerTetsuya Yamamoto, Tomomi Gotou +1inventors

InventorsTetsuya Yamamoto, Tomomi Gotou, Kaori Tomoda

Life of this patent

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Abstract

A wheel-turning device that constitutes a steer-by-wire steering system is made as compact as possible so as to be housed in a wheel house of a vehicle. The steer-by-wire steering system is provided including a wheel-turning device mechanically separated from a steering input device, the wheel-turning device being controlled based on an input signal from the steering input device, wherein the wheel-turning device includes a wheel-turning motor secured to a knuckle of a steered wheel via a gear case, a wheel-turning shaft secured to an upper arm, a worm wheel secured to the wheel-turning shaft, a worm gear meshing with the worm wheel, and the gear case housing the gears.

Claims19

Dependent claims

A steer-by-wire steering system comprising:

a steering input device;
a wheel-turning device mechanically separated from the steering input device;
and a control device that controls the wheel-turning device based on an input signal from the steering input device, wherein the wheel-turning device includes a wheel-turning actuator secured to a steered wheel coupling member constituted by a knuckle of a steered wheel or a member secured to the knuckle, a wheel-turning shaft secured to an upper arm of a suspension, a fixed gear secured around the wheel-turning shaft, a pinion gear that meshes with the fixed gear and moves around the fixed gear, and a gear case housing the gears, a drive shaft of the wheel-turning actuator is coupled to the pinion gear, the fixed gear is free with respect to the gear case, the pinion gear is supported by the gear case, and the gear case is secured to the steered wheel coupling member.

Dependencies are inferred from the claim text.

Facts

Application: 13/818,840Filed 5 Aug 2011
Priority: JP 2010-18780525 Aug 2010
Published: 20 Jun 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

B62D 5/0421
Electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear: electric motor acting on or near steering gear
B62D 5/0418
Electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear: electric motor acting on road wheel carriers
B62D 5/0463
Controlling the motor: calculating assisting torque from the motor based on driver input
B62D
Motor vehicles

Family

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