Steering device for vehicle
US9272729B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2013 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | Feb 12, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D15/021
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Front wheels (6L, 6R) a steering operation of which is possible by a steering mechanism (12) are mounted on a vehicle body (2). Steering cylinders (22L, 22R) of the steering mechanism (12) extend and contract in response to an operation of a steering handle (27) provided in a cab (5) to perform the steering operation of the front wheels (6L, 6R). The steering mechanism (12) is provided with a rotation angle sensor (28) for detecting a steering angle θ of the left front wheel (6L) and a proximity switch (29) for detecting whether or not the front wheel (6L) is in a straight-ahead state. A controller (30) determines that the rotation angle sensor (28) or the proximity switch (29) is abnormal when the steering angle (θ) detected by the rotation angle sensor (28) is different from the detection result by the proximity switch (29).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.