Title:
MOTOR-DRIVEN HYDRAULIC PUMP DEVICE
Document Type and Number:
Japanese Patent JP3911135
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a hydraulic fluid leaking from one hydraulic pump from penetrating into a pump function part of the other hydraulic pump.
SOLUTION: The pump device comprises one motor 2 disposed in the center, two hydraulic pumps 1 and 3 that sandwich one motor 2 and are disposed on both sides of it and are rotated by power from the motor 2. A leaking hydraulic fluid discharging means 5 in a joint part between the lower one 1 of two hydraulic pumps and the motor 2 discharges the leaking hydraulic fluid to the outside of the lower hydraulic pump 1 when the hydraulic fluid leaking from the upper hydraulic pump 3 side flows to the lower hydraulic pump 1 side through the motor 2, and the means 5 also comprises a hydraulic fluid discharging passage 52 disposed on the motor 2 side, an oil sump part 51 disposed in a housing 15 of the lower hydraulic pump 1, and a discharging port 55 disposed in the wall surface of the oil sump part 51.
Inventors:
Fujiwara Hidetoshi
Yoshiharu Inaguma
Naruse Mitsunori
Goya Kato
Kazuya Ando
Yoshiharu Inaguma
Naruse Mitsunori
Goya Kato
Kazuya Ando
Application Number:
JP2001158779A
Publication Date:
May 09, 2007
Filing Date:
May 28, 2001
Export Citation:
Assignee:
JTEKT Corporation
International Classes:
F04C11/00; F04C14/00; F04C15/00; (IPC1-7): F04C11/00; F04C15/00; F04C15/02
Domestic Patent References:
| JP63068787A | ||||
| JP7208327A | ||||
| JP10331774A | ||||
| JP9089404A |
Attorney, Agent or Firm:
Satoru Ogawa