DUAL STEERING SYSTEM FOR A VEHICLE

• US 20150014086A1
• Filed: 12/21/2011
• Published: 01/15/2015
• Est. Priority Date: 12/21/2011
• Status: Active Grant

• Current Assignee: Volvo Truck Corporation (AB Volvo)
• Original Assignee: Volvo Group North America LLC (AB Volvo)
• Inventors: Eisenbarth, Mark Alton
• Granted Patent: US 9,038,761 B2
• Time in Patent Office: Days
• US Class Current: 180/405
• CPC Class Codes: B62D 1/22 Alternative steering-control elements, e.g. for teaching purposes
• CPC Class Codes: B62D 5/00 Power-assisted or power-driven steering for non-deflectable wheels B62D11/00; fluid-pressure servomotors in general F15B
• CPC Class Codes: B62D 5/04 electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear

Abstract

The present invention discloses a dual steering system including a first front wheel and a second front wheel, a lateral steering linkage connecting the first and second front wheels, a first steering system with a first steering wheel and a power steering module that assists steering inputs applied to the first steering wheel, and a second steering system with a second steering wheel and a torque sensor in communication with the power steering module of the first steering system and monitoring steering inputs applied to the second steering wheel, whereby the power steering module may provide power assist to the steering inputs applied to the second steering wheel.

Claims

1. A dual steering system for a vehicle, comprising:

a first front wheel and a second front wheel;

a lateral steering linkage that connects the first and second front wheels;

a first steering system provided with a first steering wheel and a power steering module that provides power assist to steering inputs applied to the first steering wheel;

a second steering system provided with a second steering wheel and a torque sensor that monitors steering inputs applied to the second steering wheel and communicates via a data communication pathway with the power steering module of the first steering system, whereby the power steering module may provide power assist to the steering inputs applied to the second steering wheel;

the first steering system connected to the lateral steering linkage whereby the first steering wheel steers the front wheels independently of the second steering system; and

the second steering system connected to the lateral steering linkage whereby the second steering wheel may steer the front wheels of the vehicle independently of the first steering system in the event of failure of the power assist provided by the power steering module.

2. The dual steering system for a vehicle according to claim 1, wherein the first and second steering systems are connected to the lateral steering linkage via first and second pitman arms, respectively.

3. A dual steering system for a vehicle, comprising:

a first front wheel and a second front wheel;

a lateral steering linkage that connects the first and second front wheels;

a first steering system provided with a first steering wheel and a first power steering module that provides power assist to steering inputs applied to the first steering wheel;

a second steering system provided with a second steering wheel and a second power steering module that provides power assist to steering inputs applied to the second steering wheel;

the first power steering module provided with a torque sensor that monitors steering inputs applied to the first steering wheel and communicates via a data communication pathway with the second power steering module of the second steering system, whereby the second power steering module may provide power assist to the steering inputs applied to the first steering wheel;

the second power steering module provided with a torque sensor that monitors steering inputs applied to the second steering wheel and communicates via the data communication pathway with the first power steering module of the first steering system, whereby the first power steering module may provide power assist to the steering inputs applied to the second steering wheel;

the first steering system connected to the lateral steering linkage whereby the first steering wheel may steer the front wheels of the vehicle independently of the second steering system in the event of failure of the power assist provided by the second power steering module; and

the second steering system connected to the lateral steering linkage whereby the second steering wheel may steer the front wheels of the vehicle independently of the first steering system in the event of failure of the power assist provided by the first power steering module.

4. The dual steering system for a vehicle according to claim 3, wherein the first and second steering systems are connected to the lateral steering linkage via first and second pitman arms, respectively.