Title:
PIPING
Document Type and Number:
WIPO Patent Application WO/2017/130713
Kind Code:
A1
Abstract:
Piping provided with: a hose (1) made of an elastic material; a metal pipe (2) with an insert section (22) that is inserted inside the hose from an end of the hose; and a sleeve (4) that is disposed to the outside of the insert section and the hose in the radial direction and is for pressing the hose on the insert section. The insert section is provided with an uneven surface (30) having ring-shaped grooves (31) and ring-shaped protrusions (32) on the outer circumferential surface of the insert section. The grooves are provided with an inclined groove surface (305) that narrows toward the tip of the insert section and a groove bottom surface (306) extending from the end of the inclined groove surface that is toward the tip of the insert section to a protrusion and having a constant outer diameter. The sleeve is provided with small diameter sections (421) that are located to the outside of the uneven surface in the radial direction and are for pressing the hose onto the uneven surface.
Inventors:
SUGISHITA SHINJI (JP)
MATSUMOTO TATSUHITO (JP)
KONDO MASAKAZU (JP)
MATSUMOTO TATSUHITO (JP)
KONDO MASAKAZU (JP)
Application Number:
PCT/JP2017/000783
Publication Date:
August 03, 2017
Filing Date:
January 12, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
DENSO AIR SYSTEMS CORP (JP)
DENSO AIR SYSTEMS CORP (JP)
International Classes:
F16L33/207
Foreign References:
| JPH0449436Y2 | 1992-11-20 | |||
| JPS6238594B2 | 1987-08-18 | |||
| JPH0290418A | 1990-03-29 | |||
| JP2012117558A | 2012-06-21 | |||
| JP2007051774A | 2007-03-01 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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