Title:
PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/062107
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 which discharges oil. The pump device 10 comprises a first flow path which takes in oil from an inlet 12b of the motor unit 20, a second flow path which is disposed between the stator 50 and the rotor 40, and a third flow path which connects from the second flow path to a negative pressure region inside of the pump unit 30, wherein the pump unit 30 discharges, from a discharge port 12b, oil flowing from the third flow path to the pump unit 30.
Inventors:
HOMMA KAZUHIRO (JP)
ITO YOSUKE (JP)
ITO YOSUKE (JP)
Application Number:
PCT/JP2017/034562
Publication Date:
April 05, 2018
Filing Date:
September 25, 2017
Export Citation:
Assignee:
NIDEC TOSOK CORP (JP)
International Classes:
F04C15/00; F04C2/10; H02K1/20; H02K7/14; H02K9/19
Foreign References:
| JP2004232627A | 2004-08-19 | |||
| JPH0250192U | 1990-04-09 | |||
| JPS4975104U | 1974-06-28 | |||
| JP2016173097A | 2016-09-29 | |||
| JP2014001637A | 2014-01-09 | |||
| JPH10271738A | 1998-10-09 |
Attorney, Agent or Firm:
TAKAOKA Ryoichi et al. (JP)
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