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Title:
COMPOSITE VANE PUMP
Document Type and Number:
Japanese Patent JP3738376
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a composite vane pump to suppress lowering of durability and assembly workability of a sealant and reduce size and weight.
SOLUTION: A composite vane pump is formed such that the main part 12a side of the first drive shaft 12 of a first vane pump 1 and the tip part 32d side of the second drive shaft 32 of a second vane pump 21 form a corresponding involute spline and by inserting them in the tip side and the main side of a joining hole 13a in series, joining with a first rotor 13 is effected. A drive gear G is fixed on the tip part 12d side of the first drive shaft 12. A joining state with a joining hole 13a with the main part 12a of the first drive shaft 12 and the tip part 32d side of the second drive shaft 32 is produced such that joining is effected with a given length or more ensured, and joining is executed such that slide fit-in of the first drive shaft 12 side is effected and free fit-in of the second drive shaft 32 side is performed.


Inventors:
Nemoto, Kimio
Nomura, Kazuhisa
Sasazaki, Mitsuo
Application Number:
JP1997000059126
Publication Date:
January 25, 2006
Filing Date:
March 13, 1997
Export Citation:
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Assignee:
AISAN IND CO LTD
KAYABA IND CO LTD
International Classes:
F04C11/00; F04C23/00; F04C15/00; F04C28/02; F04C29/00; (IPC1-7): F04C11/00; F04C15/00; F04C23/00; F04C29/00
Domestic Patent References:
JP61222857A
JP63045030U
JP9014157A
JP62173575U
JP63068786A
JP8338498A
Attorney, Agent or Firm:
飯田 昭夫