Vane pump
AssigneeKayaba Industry Co., Ltd.
InventorsMasamichi Sugihara, Tomoyuki Fujiki, Koichiro Akatsuka
Life of this patent
Estimating the term…
Abstract
A vane pump includes a rotor, slits which are radially formed in the rotor, vanes which slidably project from the slits, vane back pressure chambers which are defined between the base end parts of the vanes and the slits, a cam ring with which the tip parts of the vanes slide in contact, a pump chamber which is defined among the cam ring, the rotor and adjacent vanes, a vane ring which faces the base end parts of the vanes, a vane ring housing chamber on which one end of each slit is open and in which the vane ring is housed, and vane ring opposite pressure chambers on which the other ends of the slits are open and which cause a fluid pressure to act in a direction to push the rotor toward the vane ring.
Claims5
A vane pump used as a fluid pressure supply source, comprising:
- a rotor which is driven and rotated;
- a plurality of slits which are radially formed in the rotor;
- a plurality of vanes which slidably project from the slits;
- vane back pressure chambers which are defined between the base end parts of the vanes and the slits;
- a cam ring with which the tip parts of the vanes slide in contact as the rotor rotates;
- a pump chamber which is defined among the cam ring, the rotor and adjacent vanes;
- a vane ring which faces the base end parts of the vanes;
- a vane ring housing chamber on which one end of each slit is open and in which the vane ring is housed;
- and
- vane ring opposite pressure chambers on which the other ends of the slits are open and which cause a fluid pressure to act in a direction to push the rotor toward the vane ring.
Dependencies are inferred from the claim text.