Power Steering Oil Pump
AssigneesHyundai Motor Company, Youngshin Precision Co., Ltd.
InventorsMinjung KIM, Yangsoo Lee
Life of this patent
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Abstract
A power steering oil pump may include a pump housing, a rotor that is equipped with a plurality of vanes and coupled to the pump housing to rotate therein, a cam ring inserted between the rotor and the pump housing to form a pumping space between the cam ring and the rotor, a rotor shaft that passes through the rotor and is fitted therein to transmit rotational force to the rotor, and a bush that has at least a first oil groove on an inner circumference thereof and supports the rotor shaft to a pump cover coupled to the pump housing while covering a portion of the rotor shaft which passes through the rotor, wherein at least a second oil groove is formed on an end portion of the vanes contacting with an inner circumference of the cam ring.
Claims5
A power steering oil pump comprising:
- a pump housing;
- a rotor that is equipped with a plurality of vanes and coupled to the pump housing to rotate therein;
- a cam ring inserted between the rotor and the pump housing to form a pumping space between the cam ring and the rotor;
- a rotor shaft that passes through the rotor and is fitted therein to transmit rotational force to the rotor;
- and
- a bush that has at least a first oil groove on an inner circumference thereof and supports the rotor shaft to a pump cover coupled to the pump housing while covering a portion of the rotor shaft which passes through the rotor,
- wherein at least a second oil groove is formed on an end portion of the vanes contacting with an inner circumference of the cam ring.
Dependencies are inferred from the claim text.