TUBE JOINT CONSISTING OF RESIN - NIPPON PILLAR PACKING

Title:

TUBE JOINT CONSISTING OF RESIN

Document Type and Number:

WIPO Patent Application WO/2010/016363

Kind Code:

A1

Abstract:

A tube joint consisting of a resin, the tube joint being economically constructed from two parts which are a joint body and a union nut and having both high pull resistance and excellent sealing performance which are achieved at the same time. The tube joint comprises a fluorocarbon resin joint body (1) and a fluorocarbon resin union nut (2). The fluorocarbon resin joint body (1) is provided with an inner tube section (4) and a male thread section (5). The fluorocarbon resin union nut (2) is provided with a female thread section (8), a sealing peripheral edge (10) capable of acting on a front end section of an expanded diameter tube section (3A), a come-out preventing peripheral edge (11) acting on a large diameter-side end portion of an expanding diameter region (9), and a pressing inner peripheral section (13) capable of being fitted over an expanded diameter straight section (12) fitted over a straight tube portion (4B). When the union nut (2) is tightened in a state in which an end of a tube (3) can be inserted into the inner tube section (4) to form the expanded diameter tube section (3A), the pressing inner peripheral section (13) is made to be in pressure contact with and fitted over the expanded diameter straight section (12), that portion of the expanding diameter region (9) which is to be the large diameter-side end portion is pressed by the come-out preventing pressing section (11), and a small-diameter-side end portion of the expanding diameter region (9) is pressed by the sealing pressing section (10).

Inventors:

TESHIMA KAZUKIYO (JP)
MASUDA AKIHIRO (JP)
NAKAMURA TAKEHIRO (JP)
YAMADA MASATERU (JP)
KISHIMOTO TAKAYUKI (JP)
FUKUMOTO TOSHIYUKI (JP)
IMANISHI RYO (JP)

Application Number:

PCT/JP2009/062747

Publication Date:

February 11, 2010

Filing Date:

July 14, 2009

Export Citation:

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Assignee:

NIPPON PILLAR PACKING (JP)
TESHIMA KAZUKIYO (JP)
MASUDA AKIHIRO (JP)
NAKAMURA TAKEHIRO (JP)
YAMADA MASATERU (JP)
KISHIMOTO TAKAYUKI (JP)
FUKUMOTO TOSHIYUKI (JP)
IMANISHI RYO (JP)

International Classes:

F16L33/22; F16L19/02; F16L47/04

Foreign References:

JPH0712692U	1995-03-03
JPS55165181U	1980-11-27
JP2002317886A	2002-10-31
JPH0341899A	1991-02-22
JPH0727274A	1995-01-27
JP2002357294A	2002-12-13
JP2587449Y2	1998-12-16

Other References: