| 摘要 |
PURPOSE:To improve the steering stability in rainy weather by steering a rear wheel in the same direction to a front wheel when a weather sensor detects rainy weather, in the captioned apparatus by which the steering of the rear wheel is controlled by an oil pressure according to the steering of the front wheel. CONSTITUTION:When a steering wheel 9 is turned, a knuckle arm 3 is turned through a steering gear mechanism 7 by receiving an energizing force of a power cylinder 6, and a front wheel 2 is steered. At this time, right and left actuators 22 in pair are operated by the pressurized fluid corresponding to the steering force, and a rear wheel 13 is steered by the turn around a pin 19 of a rear-wheel suspension member 12. In this case, an oil-pressure feeding oil passage 27 and a drain oil passage 28 for a control valve 8' for controlling the pressurized fluid supplied and discharged from each acturator 22 communicate each other through an electric-current proportional flow-rate control valve 26. Said valve 26 is controlled by the output signal of a weather sensor 31 so that the rear wheel 13 is steered in the same direction to that of the front wheel 12. |
