Title:
FLUID PUMP
Document Type and Number:
Japanese Patent JP3874154
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce slide sound generated by sliding of a partition member and a rotor pair, and reduce friction torque loss in a fluid pump.
SOLUTION: In a casing 21 of the fluid pump 20 parted into a first casing 22 and a second casing 23, plural rotor pairs R1, R2 comprising outer rotors 25, 29 having internal teeth, and inner rotors 26, 30 having external teeth to be engaged with the internal teeth to be driven by a drive shaft having a rotation axial line L1 which is eccentric from a rotation axial line L2 of the outer rotors 25, 29 are disposed in the direction of the rotation axial line L1 through a partition member 33. Since the partition member 33 is freely rotatable to the casing 21, relative speed difference to the rotor pairs R1, R2 is small, so slide sound is reduced, and because friction force between the partition member 33 and the rotor pairs R1, R2 is small, friction torque loss is reduced.
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Inventors:
Yoshihito Tsuji
Koji Hirano
Naoyuki Hashimoto
Shoichi Kinoshita
Koji Hirano
Naoyuki Hashimoto
Shoichi Kinoshita
Application Number:
JP2000052547A
Publication Date:
January 31, 2007
Filing Date:
February 28, 2000
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
F04C2/10; F04C11/00; (IPC1-7): F04C11/00; F04C2/10
Domestic Patent References:
| JP4065973U | ||||
| JP55007943A |
Attorney, Agent or Firm:
Nozomi Gangwon
Nakamura Kun
Mitsuharu Oda
Nakamura Kun
Mitsuharu Oda