VANE PUMP OF POWER STEERING FOR A VEHICLE

摘要

A vane pump of vehicle power steering is provided to form an extension chamber in an oil pocket to widen a pressure transfer area so as to smoothly transmit high pressure. A vane pump of vehicle power steering includes a body, a cam ring, a slot(450), and a rotor(400). The body corresponds to a vane pump. The cam ring is mounted in the body. The slot rotates along a rotation axis inside the cam ring to compress a working fluid. The rotor includes a vane and an oil pocket(470) formed at the bottom of the slot. The oil pocket has an extension chamber(480) formed on the side of the oil pocket, which is in contact with each of the front and rear ends of the rotor.