Title:
PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/159477
Kind Code:
A1
Abstract:
This pump device 1 comprises a motor unit 10 having a shaft 5 which rotates around a central axis J, and a pump unit 40 which is positioned to one side in the axial direction and which is driven via the shaft 5 and discharges oil. The motor unit 10 comprises a rotor 11 and stator 15, a housing 21 which houses these, a wall 25 which separates the stator 15 and the rotor 11, and a motor-side discharge port 27 which discharges oil. The pump unit 40 comprises a pump rotor 45, a pump case 49 which houses the pump rotor, a pump-side suction port 63 which sucks oil, and a pump-side delivery port 41d1 which delivers oil into the motor unit 10. The pump device 40 comprises a first flow path 51 which passes oil through the pump-side suction port 47a into the pump unit 40, a second flow path 52 which passes oil through the pump-side delivery port 41d1 into a stator region As, and a third flow path 53 which passes oil into the stator 15.
Inventors:
KOBAYASHI YOSHIYUKI (JP)
HOMMA KAZUHIRO (JP)
HIGUCHI KOJI (JP)
ITO YOSUKE (JP)
HOMMA KAZUHIRO (JP)
HIGUCHI KOJI (JP)
ITO YOSUKE (JP)
Application Number:
PCT/JP2018/006641
Publication Date:
September 07, 2018
Filing Date:
February 23, 2018
Export Citation:
Assignee:
NIDEC TOSOK CORP (JP)
International Classes:
F04C2/18; H02K7/14; H02K9/19
Foreign References:
| JPH05122901A | 1993-05-18 | |||
| JP2004112856A | 2004-04-08 | |||
| JP2015175291A | 2015-10-05 | |||
| JP2012122451A | 2012-06-28 |
Attorney, Agent or Firm:
KOHO IP LAW (JP)
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