Title:
PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/062093
Kind Code:
A1
Abstract:
This pump device 10 is provided with a shaft 41, a motor unit 20 which rotates the shaft 41, and a pump unit 30 which is driven by the motor unit 20 via the shaft 41 and discharges oil. The pump device 10 comprises a first oil flow path which connects the inside of the pump unit 30 and the inside of a housing 12, a second oil flow path which is disposed between a stator 50 of the motor unit 20 and a rotor 40, and a third oil flow path which passes radially outside of the stator 50 and the rotor 40 to connect from the second flow path to an inlet 32c of the pump. In the first flow path, oil passes between the shaft 41 and a bearing member 31b, between the bearing member 31b and a pump case (a pump body 31), or through at least part of the inside of the bearing member 31b.
Inventors:
HOMMA KAZUHIRO (JP)
ITO YOSUKE (JP)
ITO YOSUKE (JP)
Application Number:
PCT/JP2017/034513
Publication Date:
April 05, 2018
Filing Date:
September 25, 2017
Export Citation:
Assignee:
NIDEC TOSOK CORP (JP)
International Classes:
F04C2/10; F04C15/00; H02K7/14; H02K9/19
Foreign References:
| JP2009019522A | 2009-01-29 | |||
| JPS407245Y1 | 1965-03-05 | |||
| JPS513104U | 1976-01-10 | |||
| JP2006170119A | 2006-06-29 | |||
| JP2005245199A | 2005-09-08 | |||
| JP2014001637A | 2014-01-09 | |||
| JPH11218090A | 1999-08-10 | |||
| JP2000018173A | 2000-01-18 | |||
| JP2002317772A | 2002-10-31 | |||
| JP2005256733A | 2005-09-22 |
Attorney, Agent or Firm:
TAKAOKA Ryoichi et al. (JP)
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