Title:
CHECK VALVE MECHANISM, ELECTRIC OIL PUMP, AND CHECK VALVE COMPONENT UNIT
Document Type and Number:
Japanese Patent JP2022148760
Kind Code:
A
Abstract:
To improve assemblability of a check valve mechanism to an electric oil pump etc. and achieve simplification and reduction of costs of an assembly facility.SOLUTION: A check valve mechanism 70 includes: a seal surface 74; a ball 71; a spring 72 which presses the ball 71 to the seal surface 74; and a holder 75 which holds the ball 71 and the spring 72 at an inner periphery. The holder 75 is provided with: a bottom part 75c which supports the spring 72 from the downstream side; and an engagement part 77 which may engage with the ball 71 from the upstream side.SELECTED DRAWING: Figure 4
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Inventors:
KITAYAMA NAOTSUGU
ISHIKAWA SHINTARO
ISHIKAWA SHINTARO
Application Number:
JP2021050568A
Publication Date:
October 06, 2022
Filing Date:
March 24, 2021
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F04C2/10; F04C14/24; F04C15/06
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Yusuke Noguchi
Tsuyoshi Kumano
Yusuke Noguchi
Previous Patent: electric pump
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