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Title:
PIPE JOINT, SEPARATION PREVENTION MEMBER, AND PIPE JOINING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/169531
Kind Code:
A1
Abstract:
Provided a pipe joint that enables miniaturization in the pipe axis direction. A pipe joint (1) is configured in such a manner that: a reception port (4) of one pipe (2) has inserted therein an insertion port (5) of the other pipe (3); an annular sealing member (7) is provided to a gap between the outer circumferential surface of the insertion port (5) and the inner circumferential surface of the reception port (4); and a push ring (8) that pushes the sealing member (7) deep inside the reception port (4) is fitted around the insertion port (5) and opposed to the opening end of the reception port (4) from the outside. The insertion port (5) has an insertion port projection (9) in an outer circumferential part. A separation prevention member (10) that is engaged with the insertion port projection (9) in the pipe axis direction to prevent the insertion port (5) from being separated from the reception port (4) is provided between the inner periphery of the push ring (8) and the outer periphery of the insertion port (5). The sealing member (7) has a compression section (16) held between the outer circumferential surface of the insertion part (5) and the inner circumferential surface of the reception port (4) to be compressed in a pipe radial direction. The sealing member (7) is positioned on the outer periphery of the insertion port projection (9), and the compression section (16) of the sealing member (7) is positioned deeper inside the reception port (4) than the insertion port projection (9).

Inventors:
ISHIHARA, Takahiro (Hanshin Plant 26, Oohamacho 2-chome, Amagasaki-sh, Hyogo 95, 〒6600095, JP)
KANEKO, Shogo (Hanshin Plant 26, Oohamacho 2-chome, Amagasaki-sh, Hyogo 95, 〒6600095, JP)
ITO, Kazuya (Hanshin Plant 26, Oohamacho 2-chome, Amagasaki-sh, Hyogo 95, 〒6600095, JP)
YAMADA, Shota (Hanshin Plant 26, Oohamacho 2-chome, Amagasaki-sh, Hyogo 95, 〒6600095, JP)
HIEDA, Yuki (Hanshin Plant 26, Oohamacho 2-chome, Amagasaki-sh, Hyogo 95, 〒6600095, JP)
Application Number:
JP2017/008701
Publication Date:
October 05, 2017
Filing Date:
March 06, 2017
Export Citation:
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Assignee:
KUBOTA CORPORATION (2-47, Shikitsuhigashi 1-chome Naniwa-ku, Osaka-sh, Osaka 01, 〒5568601, JP)
International Classes:
F16L21/04; F16L21/08
Foreign References:
JPS5186821U1976-07-12
JP2008309276A2008-12-25
JP2010203580A2010-09-16
JP2008196607A2008-08-28
JP2015143524A2015-08-06
JP2004232679A2004-08-19
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (Daiwa Minamimorimachi Building, 2-6 Tenjinbashi 2-chome Kita, Kita-ku, Osaka-sh, Osaka 41, 〒5300041, JP)
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