Vaned hydraulic system
AssigneeNissan Motor Co., Ltd.
InventorsYasufumi Ideta, Tadashi Fujikawa
Life of this patent
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Abstract
A vane pump has a housing comprising a pump cover and a pump housing. The pump cover is integrally formed with a hollow fixed shaft projecting therefrom and inserted loosely into a longitudinal hole of the pump housing. Received in the housing are a cam ring, a rotor eccentrically disposed for rotation within the cam ring, a plurality of vanes radially slidably provided through the rotor, a pair of annular vane rings disposed coaxially with the cam ring and an annular centering member mounted to the base portion of the fixed shaft adjacent the pump cover such that the centering member is arranged in a radially shifted position from the annular vane rings.
Claims6
A vaned hydraulic system comprising:
- a housing comprising a first pump cover integrally formed with a fixed shaft projecting therefrom and a second pump cover having a longitudinal hole for receiving said fixed shaft to be inserted therein,
- a cam ring pivotally received within said housing,
- a rotor disposed for rotation radially inward of said cam ring and radially outward of said fixed shaft and arranged eccentrically with respect to said cam ring,
- a plurality of vanes disposed radially slidably through said rotor,
- a pair of vane rings disposed at the opposite sides of said rotor and radially inward of said vanes in abutting engagement against said vanes,
- a driving shaft adapted to be inserted into said hole of said second pump cover for connection to said rotor, and
- a centering member entirely disposed at a radially shifted position from said pair of vane rings so as to position the rotor in place before said driving shaft is inserted into said hole of said second pump cover.
Dependencies are inferred from the claim text.