Title:
OIL PUMP
Document Type and Number:
Japanese Patent JP2021025520
Kind Code:
A
Abstract:
To provide an oil pump which can pump an oil even if a shaft rotates in a normal direction and a reverse direction and can achieve space saving.SOLUTION: An oil pump 100 includes: a rotary shaft 4; a pump part 3 having an inner rotor 31 and an outer rotor 32; and a case formed with a pump chamber for accommodating the pump part. At least one of a first suction passage, a first discharge passage, a second suction passage, and a second discharge passage included in the case has a ball and a seat part, on which the ball may be seated, and includes a non-return valve, in which no spring is used, in a passage for transporting the oil.SELECTED DRAWING: Figure 1
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Inventors:
ARAI KAZUHIRO
SATO KOSUKE
NISHIOKA SENTARO
SATO KOSUKE
NISHIOKA SENTARO
Application Number:
JP2020091698A
Publication Date:
February 22, 2021
Filing Date:
May 26, 2020
Export Citation:
Assignee:
YAMADA SEISAKUSHO KK
International Classes:
F04C15/06; F04B53/10; F04C14/04; F04C15/00
Attorney, Agent or Firm:
Field Saki Satoshi
Junichi Kobayashi
Hiroyuki Hashimoto
Junichi Kobayashi
Hiroyuki Hashimoto