Power steering device
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsYosuke Hasegawa, Bunzo Seki
Life of this patent
Estimating the term…
Abstract
To provide a power steering device capable of increasing the degree of freedom in the layout of the various elements, stabilizing the surface of the oil and preventing air from being included or mixing foreign materials with the oil in the oil tank. The power steering device includes a power assist cylinder arranged between a steering shaft and a chassis frame. A control valve is operated by the steering shaft to control the power assist cylinder. An oil pump pressurizes operating oil supplied to the power assist cylinder. Furthermore, an oil tank stores the operating oil, wherein the oil tank is of a closed type and integrally arranged in the oil pump.
Claims20
A power steering device for a vehicle, comprising:
- a power assist cylinder, said power assist cylinder being arranged between a steering shaft and a chassis frame of the vehicle;
- a control valve operable by said steering shaft to control said power assist cylinder;
- an oil pump for pressurizing operating oil supplied to said power assist cylinder;
- and
- an oil tank for storing said operating oil, said oil tank being integrally installed in said oil pump, and being connected with an oil passage for returning the operating oil to the oil pump, and further, said oil tank being closed, thus enabling air in the oil tank to be completely removed so that a variation in a surface of the operating oil in the oil tank can be eliminated, and foreign matters can be prevented from merging with the operating oil.
A power steering device in a vehicle, comprising:
- a chassis frame;
- a steering shaft rotatably mounted to said chassis frame;
- a power assist cylinder, said power assist cylinder being mounted between said steering shaft and said chassis frame;
- a control valve operably mounted to said steering shaft to control said power assist cylinder;
- an oil pump for pressurizing operating oil supplied to said power assist cylinder;
- and
- an oil tank for storing said operating oil, said oil tank being integrally installed in said oil pump, and being connected with an oil passage for returning the operating oil to the oil pump, and further, said oil tank being closed, thus enabling air in the oil tank to be completely removed so that a variation in a surface of the operating oil in the oil tank can be eliminated, and foreign matters can be prevented from merging with the operating oil.
Dependencies are inferred from the claim text.