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1. WO2000028254 - RESIN PIPE JOINT

Publication Number WO/2000/028254
Publication Date 18.05.2000
International Application No. PCT/JP1998/004993
International Filing Date 05.11.1998
IPC
F16L 33/22 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
33Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
22with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
F16L 47/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
47Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
04with a swivel nut or collar engaging the pipe
CPC
F16L 33/223
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
33Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
22with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
223the sealing surfaces being pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
F16L 47/041
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
47Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
04with a swivel nut or collar engaging the pipe
041the plastic pipe end being flared either before or during the making of the connection
Applicants
  • NIPPON PILLAR PACKING CO., LTD. [JP]/[JP] (AllExceptUS)
  • NISHIO, Kiyoshi [JP]/[JP] (UsOnly)
Inventors
  • NISHIO, Kiyoshi
Agents
  • SUZUYE, Koichi
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) RESIN PIPE JOINT
(FR) RACCORD DE TUYAU EN RESINE
Abstract
(EN)
A resin pipe joint, wherein an inner ring (2) press fitted in one end portion of a pipe member (12) and combined therewith in a unitary state is provided with a cylindrical projection (8) at a projecting end portion thereof, an inner surface of the cylindrical projection (8) being formed into a conical taper surface (8a) the diameter of which increases gradually in the axially outward direction, the cylindrical projection (8) of an inner ring (2) including the conical taper surface (8a) being fitted axially in an inner portion of a receiving port (4) of a joint body (1) to form a cylindrical groove (6), which forms seal portions (7A, 7B), between the joint body (1) and inner ring (2), whereby a high contact pressure is generated between the taper surface (8a) and an outer surface (8b) and surfaces (10a, 4a) opposed thereto even by a small tightening force generated when a push ring (3) is screwed, to enable a sealing performance of a very high reliability to be secured.
(FR)
Cette invention se rapporte à un raccord de tuyau en résine, dans lequel une bague interne (2) ajustée par pression dans une partie terminale d'un segment de tuyau (12) et associée à elle de façon solidaire est pourvue d'une saillie cylindrique (8) au niveau de l'une de ses parties terminales saillantes, une surface interne de cette saillie cylindrique (8) étant inclinée de façon à former une partie tronconique (8a) dont le diamètre augmente progressivement dans le sens axial vers l'extérieur. La saillie cylindrique (8) d'une bague interne (2) comportant la surface inclinée (8a) est ajustée axialement dans une partie interne d'un orifice récepteur (4) du corps (1) du raccord, afin de former une rainure cylindrique (6), laquelle forme des parties joint d'étanchéité (7A, 7B) entre le corps (1) du raccord et la bague interne (2). Ainsi, une pression de contact élevée est créée entre d'une part la surface inclinée (8a) et la surface externe (8b) et d'autre part les surfaces (10a, 4a) opposées à celles-ci, même sous l'action d'une faible force de serrage produite par le vissage d'une bague de poussée (3), de façon à assurer des performances d'étanchéité d'une très grande fiabilité.
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