Vane pump unit
AssigneeShowa Corporation
InventorsYoshihiro Tsukahara, Naoya Taga
Life of this patent
Estimating the term…
Abstract
A vane pump unit assembled into a housing includes a rotor; a plurality of vanes; a cam ring; a first plate; a second plate; a connecting bar that has a first end portion fixed to the first plate, and a second end portion which protrudes from the second plate; and a clip that prevents the second plate and the cam ring from slipping out of the connecting bar. Before the clip is assembled into the housing, the retaining of the clip is positioned at least either between the first plate and the cam ring or between the second plate and the cam ring, in a place where a gap is formed. After the clip is assembled into the housing, the housing interposes the first plate, the cam ring, and the second plate in the axial direction, and the first and second plates are in close contact with the cam ring.
Claims7
A vane pump unit comprising:
- a rotor;
- a plurality of vanes that are slidably provided in the rotor;
- an cam ring that surrounds the rotor and the plurality of vanes;
- a first plate that is disposed on one end surface side of the rotor;
- a second plate that is disposed on the other end surface side of the rotor;
- a connecting bar that passes through the cam ring in an axial direction, and has a first end portion fixed to the first plate, and a second end portion which passes through the second plate and then protrudes from the second plate;
- and
- a retainer that is retained in the second end portion of the connecting bar, the retainer being configured to prevent the second plate and the cam ring from slipping out of the connecting bar,
- wherein the retainer is placed at the second end portion to secure the second plate and the cam ring such that the secured cam ring and the secured second plate are displaceable along the connecting bar.
Dependencies are inferred from the claim text.