Pipe joint made of resin

The invention provides a pipe joint made of resin in which a predetermined pressing force in the axial direction corresponding to a fastening torque of a union nut can be obtained, and the strength of threads can be enhanced. Each of threads of an external thread portion 9 of a joint body 1 and an i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	NISHIO, KIYOSHI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The invention provides a pipe joint made of resin in which a predetermined pressing force in the axial direction corresponding to a fastening torque of a union nut can be obtained, and the strength of threads can be enhanced. Each of threads of an external thread portion 9 of a joint body 1 and an internal thread portion 20 of a union nut 3 is formed as an asymmetrical trapezoid, an included angle alpha 1 of flanks 9a and 20a of the asymmetrical trapezoidal threads which are made in contact with each other by fastening the union nut 3 is set to 70 to 90 DEG , and an included angle alpha 2 of flanks 9b and 20b opposite to the flanks is set to 40 to 80 DEG (which is an angle smaller than the included angle alpha 1).