Title:
オイルポンプ
Document Type and Number:
Japanese Patent JP6672850
Kind Code:
B2
Abstract:
In an oil pump, an inner rotor and an outer rotor rotate to discharge the oil through a discharge port. The discharge port has an outer extension portion located on a radially inner side with respect to a root circle of the outer rotor and on a radially outer side of a tip circle of the outer rotor and an inner extension portion located on the radially inner side with respect to the tip circle of the outer rotor and on the radially outer side with respect to a root circle of the inner rotor. An inter-tooth chamber facing a partitioning portion that partitions the suction port from the discharge port comes into communication with the outer extension portion and the inner extension portion. Then, a tip seal portion defining the inter-tooth chamber intersects an outer edge of an opening of the discharge port.
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Inventors:
Masaaki Ohwaki
Application Number:
JP2016019730A
Publication Date:
March 25, 2020
Filing Date:
February 04, 2016
Export Citation:
Assignee:
JTEKT Corporation
International Classes:
F04C2/10
Domestic Patent References:
| JP2002147367A | ||||
| JP5164059A |
Attorney, Agent or Firm:
Hirata International Patent Office
Tadao Hirata
Takashi Nomiyama
Hiroyuki Ito
Tadao Hirata
Takashi Nomiyama
Hiroyuki Ito