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1. (WO2018159472) PUMP DEVICE

Pub. No.:    WO/2018/159472    International Application No.:    PCT/JP2018/006611
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Sat Feb 24 00:59:59 CET 2018
IPC: F04C 15/00
F04C 2/10
F04C 15/06
H02K 7/14
H02K 9/19
H02K 11/23
Applicants: NIDEC TOSOK CORPORATION
日本電産トーソク株式会社
Inventors: KATAOKA Shigehiro
片岡 慈裕
KOBAYASHI Yoshiyuki
小林 喜幸
Title: PUMP DEVICE
Abstract:
This pump device 1 has: a motor section 20 having a shaft 41 disposed along a center axis J; a pump section 30 located on one axial side of the motor section 20 and driven by the motor section 20 through the shaft 41 to discharge oil; and an inverter circuit 65 for driving the pump 30. The motor section 20 has a housing 21 for containing a rotor 11 and a stator 50. The pump section 30 has: a pump rotor 35 mounted to the shaft 41; a pump body 31 for containing the pump rotor 35; and a pump cover 32 for closing the opening of the pump body 31, which is located on one axial side of the pump body 31. The pump cover 32 has a cover extension section 32c extending to the outside of the sidewall 21b of the housing 21 from the radially outer edge of the pump cover 32. The pump cover 32 is provided in thermal contact with the inverter circuit 65.