TUBE-FASTENING STRUCTURE

WIPO Patent Application WO/2014/142226

A1

The present invention prevents marring of the outer surface of a tube while reliably preventing pull-out with a simple structure regardless of diameter-constricting deformation of the tube. Even if the clip body (2) is moved along the outer surface (A1) of a tube (A) into which a nipple (1) is inserted, the tip surface (41d) of a bent section (41) does not strike the outer surface (A1) of the tube (A). The clip body (2), with the diameter expanded using manipulator parts (3) thereof, is moved toward a locking flange (12) of the nipple (1). When the bent section (41) of the hook (4) rides over the locking flange (12) in the axial direction, the diameter of the clip body (2) undergoes diameter-constricting deformation elastically by releasing the diameter expansion of the clip body using the operating parts (3) and as a result, the tip surface (41d) of the bent section (41) enters an engaging groove (13) of the nipple (1). At the same time, the bent section (41) engages with the locking flange (12) in the axial direction and becomes immovable. Even if subsequently the clip body (2) digs into the outer surface (A1) of the tube (A) or the tube (A) undergoes diameter-constricting deformation in association with aged deterioration, the bent section (41) moves radially inward along the locking flange (12) and the engagement of the two is maintained.

TAKIMOTO SHINJI (JP)

PCT/JP2014/056621

September 18, 2014

March 13, 2014

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TOYOX KK (JP)

F16B2/08; F16L33/02; F16B2/10; F16B2/24; F16B7/04

JP2010078061A	2010-04-08
JP2010169175A	2010-08-05
JP2006057798A	2006-03-02
JP2000249274A	2000-09-12

EICHI Patent & Trademark Corp. (JP)
Patent business corporation Wisdom international patent firm (JP)

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