Vane pump
AssigneeShowa Corporation
InventorsYoshiyuki Inose, Hiroyuki Ishihama
Life of this patent
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Abstract
A vane pump includes: a rotor that is coupled with a rotation shaft to rotate; a plurality of vanes that are slidably held by a plurality of vane grooves which are disposed in a radiation direction in an outer circumferential portion of the rotor; a cam ring that is arranged to surround the rotor and the plurality of vanes; and a side plate that covers the cam ring and includes a supply unit which supplies a working fluid into the cam ring between the cam ring, an outer circumference of the side plate being recessed to a radially inner side of the rotation shaft to form the supply unit, in which an outer circumference of the supply unit and an inner circumference of the cam ring are shaped along each other.
Claims9
A vane pump comprising:
- a rotor that is coupled with a rotation shaft to rotate;
- a plurality of vanes that are slidably held by a plurality of vane grooves which are disposed in a radiation direction in an outer circumferential portion of the rotor;
- a cam ring that is arranged to surround the rotor and the plurality of vanes;
- a side plate that covers the cam ring and includes a suction port which is configured to supply a working fluid to the cam ring and is formed on an outer circumference of the side plate as a portion being recessed to a radially inner side of the rotation shaft to form the supply unit;
- and
- wherein the suction port has an inner end portion, which extends along and is spaced from an inner circumference of the cam ring by a constant distance in a radial direction of the rotation shaft.
Dependencies are inferred from the claim text.