| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sub steering system having good mountability in a vehicle. <P>SOLUTION: In the sub steering system 40, even when an abnormality occurs in a steer-by-wire system 10, and an electric turning motor 16 is not operated, a turning wheel 11 by the sub steering system 40 can be steered by a steering wheel 25. In the sub steering system 40, a first piston 43 and a second hydraulic cylinder 42X extend along a steering shaft 44X turned together with the steering wheel 25, expansion of the steering wheel 25 in the transverse direction from the axis of rotation is suppressed, and the mountability is enhanced. Further, a second hydraulic cylinder 42Y and a piston 43Y extend in the direction across a turning shaft 12, the length of the turning shaft 12 can be reduced, and the mountability on the vehicle is also enhanced in this point. <P>COPYRIGHT: (C)2007,JPO&INPIT |
