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US 11,149,730 B2Granted
Vane pump driven by an engine of an automobile
AssigneeTaiho Kogyo Co., Ltd.
InventorsKen Nakamuta, Syuhei Nishida
Life of this patent
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Abstract
A vane pump includes a housing, a rotor rotatable about a rotation axis, and a vane that rotates together with the rotor and reciprocates in a radial direction with respect to the rotor, the vane dividing a pump chamber into a plurality of working chambers. At least one of opposite end surfaces of the vane in an axial direction is a sliding surface that slidably contacts an inner surface of the housing via an oil film, and an oil reservoir portion is provided in the sliding surface in a recessed manner.
Claims4
A vane pump comprising:
- a housing with a pump chamber;
- a rotor rotatable about its own axis;
- and
- a vane that rotates together with the rotor and reciprocates in a radial direction with respect to the rotor, the vane dividing the pump chamber into a plurality of working chambers, wherein
- at least one of opposite end surfaces of the vane in an axial direction is a sliding surface that slidably contacts an inner surface of the housing via an oil film,
- an oil reservoir portion that stores lubricating oil is provided in a gap defined by the sliding surface between the vane and the inner surface of the housing, and
- the oil reservoir portion has a bottom, and both opposite end surfaces of the vane in the axial direction do not communicate with each other through the oil reservoir portion.
4 more elements
Dependencies are inferred from the claim text.