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Title:
VANE PUMP
Document Type and Number:
Japanese Patent JP2003286973
Kind Code:
A
Abstract:

To increase a sealing width between a communication passage for joining a suction port to an oil sump space through a check valve and a vane groove part.

This vane pump comprises a cam ring 31R, a right valve plate 38R and a right side first side plate 30R connected to the left and right side surfaces of the cam ring, a rotor 35R rotatably disposed in the inner peripheral space of the cam ring, and a plurality of vanes 41 radially movably disposed in a vane groove 35a of the rotor. A suction port 43R and a delivery port 44R are formed in the inside surface of the right side valve plate 38R, and an oil passage formed of a communication groove g2 for communicating reservoirs 55R and 55L and the suction and delivery ports, a communication hole h4, and a suction passage space 60 is formed in the outside surface thereof. A check valve 50 in proximity to the suction and delivery ports is installed in the oil passage, and an opening 61a provided in the inner peripheral end part of the communication oil passage is opposed to the inner peripheral part of a slidable contact surface between the right side valve plate 38R and the rotor 35R.


Inventors:
Miyata, Kazunori
Kurokawa, Takuya
Application Number:
JP2002000091489
Publication Date:
October 10, 2003
Filing Date:
March 28, 2002
Export Citation:
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Assignee:
HONDA MOTOR CO LTD
International Classes:
F04C2/344; F04C11/00; F04C14/00; F04C14/26; F04C15/00; F04C15/06; (IPC1-7): F04C15/04; F04C2/344; F04C11/00; F04C15/02
Attorney, Agent or Firm:
大西 正悟



 
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