Title:
PIPE JOINT
Document Type and Number:
WIPO Patent Application WO/2023/199770
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a pipe joint capable achieving sufficient water shut-off. A pipe joint is characterized by comprising: a guide part provided on a nipple, and arranged to face an inner surface of a pipe body having flexibility; a fastening member with a tapered surface arranged to face an outer peripheral surface of the guide part and have a gradually increasing diameter toward an inserting direction of the pipe body; a sleeve that is movable in a reciprocating manner in the inserting direction of the pipe body and the opposite direction, namely a pipe pullout direction, along the fastening member, and that is elastically deformable in a radial direction to have an increased radius and a reduced radius; and an elastic member arranged to push the sleeve along the taped surface toward the pipe pullout direction, wherein the sleeve has a sleeve protrusion that digs into an outer surface of the pipe body when the radius is reduced, the guide part has a plurality of water shut-off members from the inner side to the outer side in the inserting direction of the pipe body, and the sleeve protrusion is disposed above the water shut-off member on the inner side in the inserting direction of the pipe body when connection of the pipe body has been completed, and is disposed above the water shut-off member on the outer side in the inserting direction of the pipe body when the internal pressure in the pipe body is high.
More Like This:
| WO/2001/020217 | FITTING FOR A CONDUIT |
| JP2004085132 | PIPING STRUCTURE FOR HEAT EXCHANGER |
Inventors:
SUGITA SHUJI (JP)
SHIMIZU KAZUKI (JP)
SHIMIZU KAZUKI (JP)
Application Number:
PCT/JP2023/013769
Publication Date:
October 19, 2023
Filing Date:
April 03, 2023
Export Citation:
Assignee:
TOYOX KK (JP)
International Classes:
F16L33/22; F16L21/00; F16L37/12
Domestic Patent References:
| WO2013115044A1 | 2013-08-08 |
Foreign References:
| JP2011231847A | 2011-11-17 | |||
| JPH043190U | 1992-01-13 | |||
| JPS6427597U | 1989-02-16 | |||
| US6254144B1 | 2001-07-03 | |||
| JPS48108215U | 1973-12-14 |
Attorney, Agent or Firm:
EICHI PATENT & TRADEMARK CORP. (JP)
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