Title:
RESINOUS PIPE JOINT
Document Type and Number:
WIPO Patent Application WO/2018/179678
Kind Code:
A1
Abstract:
Provided is a resinous pipe joint in which reduction in the replaceability of a fluid flowing between a joint body and an inner ring can be prevented. The resinous pipe joint comprises: a joint body including a body tube part, an outer tube part, an inner tube part, and a groove part; an inner ring including a fitting part (31), a press-fitting part, an outer protrusion part (33), and a tubular inner protrusion part (34); and a union nut including a nut body and a pressing part. The inner tube part has a fluid path formed by a tube hole. The inner protrusion part is provided to the fitting part so as to protrude to another side in the axial direction and so as to be able to come into contact with the inner tube part in the axial direction, and has a fluid path that is formed by a tube hole and that is able to be communicatively connected to the fluid path of the inner tube part. A protrusion end section of the inner protrusion part has an inner diameter not smaller than the minimum inner diameter of the inner tube part of the joint body. An inner circumferential section of the inner protrusion part has a first inner circumferential surface at which the inner diameter of the inner protrusion part decreases from the other side in the axial direction of the inner ring toward one side in the axial direction of the inner ring.
Inventors:
FUJII MAKOTO (JP)
IIDA TOSHIHIDE (JP)
KOIKE TOMOYUKI (JP)
NARUO MOTOAKI (JP)
IIDA TOSHIHIDE (JP)
KOIKE TOMOYUKI (JP)
NARUO MOTOAKI (JP)
Application Number:
PCT/JP2018/000798
Publication Date:
October 04, 2018
Filing Date:
January 15, 2018
Export Citation:
Assignee:
NIPPON PILLAR PACKING (JP)
International Classes:
F16L19/04; F16L33/22; F16L47/04
Domestic Patent References:
| WO2014181591A1 | 2014-11-13 | |||
| WO2012105525A1 | 2012-08-09 | |||
| WO2014013989A1 | 2014-01-23 |
Foreign References:
| JP2001021074A | 2001-01-26 | |||
| JP2013100876A | 2013-05-23 |
Other References:
See also references of EP 3604883A4
Attorney, Agent or Firm:
SUZUE Shoji (JP)
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