Title:
CHECK VALVE
Document Type and Number:
Japanese Patent JP2020125769
Kind Code:
A
Abstract:
To discharge foreign objects stuck in a groove part of a valve seat member.SOLUTION: A check valve 50 includes a holder 60 having a bottomed cylinder shape. A spherical valve body 70 is disposed at an interior of the holder 60. Further, a coil spring 80 which biases the valve body 70 to an opening side as viewed in an axial direction of the holder 60 is housed within the holder 60. A valve seat member 90 is attached to the opening side as viewed in the axial direction of the holder 60. A through hole 95 penetrates through the valve seat member 90 in the axial direction of the holder 60. A groove 98, extending from an inner peripheral edge 97b to an outer peripheral edge 97c of an inner peripheral surface 97a is recessed on the inner peripheral surface 97a of the through hole 95 with which the valve body 70 is brought into contact. A cross section area of the groove part 98 on a cross section orthogonal to an extension direction of the groove part 98 becomes larger toward an outer peripheral edge 97c side of the inner peripheral surface 97a.SELECTED DRAWING: Figure 1
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Inventors:
TSUCHIYA TOMIHISA
IWAI AKIRA
IWAI AKIRA
Application Number:
JP2019016800A
Publication Date:
August 20, 2020
Filing Date:
February 01, 2019
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16K15/04; F16K51/00
Domestic Patent References:
| JP2016102505A | 2016-06-02 | |||
| JP2014152817A | 2014-08-25 | |||
| JP2013015040A | 2013-01-24 |
Foreign References:
| US7444990B1 | 2008-11-04 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda