FLOW PASSAGE SWITCHING VALVE AND ASSEMBLY METHOD THEREFOR

WIPO Patent Application WO/2020/017170

A1

Provided are a flow passage switching valve and an assembly method therefor with which assembly precision can be effectively increased. A ball valve (20) of a flow passage switching valve (1) is formed to have a size (H) in a rotation axis (L) direction that is smaller than a size (W) in a direction orthogonal to the rotation axis (L) so that sealing members (31, 31) are in a restored state when the ball valve is in an assembly posture and the sealing members (31, 31) are in a compressed state when the ball valve is in a supporting posture. When assembling the flow passage switching valve (1), seat members (30, 30) and the sealing members (31, 31) are accommodated in a valve chamber (14), and the ball valve (20) is disposed in the assembly posture between the seat members (30, 30). A rod-shaped tool is inserted from a second flow passage (12) of a valve body (10), and a distal end section of the rod-shaped tool is fitted into a recess (27a) of a tool attachment part (27) of the ball valve (20). The rod-shaped tool is rotated to rotate the ball valve (20) from the assembly posture to the supporting posture.

JPH09236181

BALL VALVE

KONDO DAISUKE (JP)
MOCHIZUKI KENICHI (JP)
MANO TAKAMITSU (JP)

PCT/JP2019/021960

January 23, 2020

June 03, 2019

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FUJIKOKI CORP (JP)
DENSO CORP (JP)

F16K5/06; F16K11/087; F16K27/00; F16K27/06

CN203797046U	2014-08-27
JP2016138626A	2016-08-04
JP2006090408A	2006-04-06
EP0217993A1	1987-04-15
GB978481A	1964-12-23
JPS5910370U	1984-01-23
JPS5710370U	1982-01-19
JPS60139967U	1985-09-17
JP2018115690A	2018-07-26
JPS56109467U	1981-08-25
JP2010223418A	2010-10-07

See also references of EP 3825587A4

OPUS IP LAW FIRM (JP)

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