WO2004063615A1 - Compression fitting for pipes - Google Patents
Compression fitting for pipes Download PDFInfo
- Publication number
- WO2004063615A1 WO2004063615A1 PCT/EP2003/014367 EP0314367W WO2004063615A1 WO 2004063615 A1 WO2004063615 A1 WO 2004063615A1 EP 0314367 W EP0314367 W EP 0314367W WO 2004063615 A1 WO2004063615 A1 WO 2004063615A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- groove
- sleeve
- internal element
- fitting
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
- F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
- F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
- F16L33/2073—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member
- F16L33/2076—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member by plastic deformation
Definitions
- the pipe is made in a pliable material, such as a plastic material
- a pliable material such as a plastic material
- the use of an internal element generally cylindrical is known whose external surface has successive ridges and ring-like grooves.
- the pressure of the pipe on this sleeve deforms the material of the pipe making said ridges penetrate into the material itself, with effective hydraulic seal action.
- a problem is constituted by the need to achieve efficient resistance both to the withdrawal mechanical stress and to the hydraulic leakages, which is also reliable over its service life.
- the deformation of the external sleeve proves to be easier and can be deeper, if it is carried out in correspondence with discrete circumferential areas, so as to form deformed ring areas to assume a reduced diameter.
- the present invention therefore concerns that type of fitting in which the whole section of the rigid or semirigid pipe is deformed because the pipe follows the path of the internal sleeve that is not generically cylindrical, but has at least one section with a heavily reduced diameter into which the pipe is forced to penetrate by deformation of its entire section, in the sense of reducing the diameter.
- the internal element is fitted with circumferential grooves corresponding in position to the areas of the sleeve that are intended to be deformed.
- the deformation of the pipe so that it takes on such a path that adheres to the internal element also in the areas with reduced diameter is obtained by means of deformation of an external sleeve fitted onto the pipe.
- the sleeve is deformed by means of a semi-circular jaw clamp with configuration corresponding to that of the sleeve, fitted with protruding circumferential beads, to compress and selectively deform the desired areas of the sleeve, in correspondence of the areas of the pipe that have to be deformed with diameter reduction to penetrate the reduced diameter areas of the internal element .
- Proposal has also been made to define the sleeve areas that are subject to maximum pressure by a deformation collet by making slight protrusions on the external surface of the sleeve situated in correspondence of areas where maximum pressure on the pipe is required, to push it against a corresponding area of the internal element, as shown in DE 10137078.
- the result is that there are areas of the pipe that are more compressed so that the plastic material that constitutes the wall of the pipe, or at least its external layer, is deformed locally altering the thickness of the pipe and causing the insertion of the material in said seats for elastic gaskets of a generically cylindrical internal element of the fitting.
- the requirement in this document is that excessive diametric deformation of the pipe is avoided so as not to damage elastic gasket elements, while according to the aims of the invention the contrary is required, that is that the pipe is deeply deformed in the sense of locally diminishing its diameter, to reach a winding path that adapts to an internal element that has wide and deep grooves, to anchor mechanically against withdrawal.
- the aim of the present invention is to obviate the inconveniences of the known technique and to produce a pressure joint that is highly reliable both for mechanical resistance against withdrawal and for hydraulic seal, suitable for pipes with relatively rigid wall in metal or in layers of plastic material and metal, and with improved facility of installation.
- the pressure fitting for rigid or semi-rigid pipes in metal, rigid plastic material (such as reticular polythene) or metal-plastic multi-layer comprises an internal element on which the pipe is fitted and into which at least one circumferential groove is machined and an external sleeve usually cylindrical is positioned around the portion of pipe fitted on the internal element and intended to be deformed by radial compression to deform the pipe so as to make its wall adhere to the bottom of the groove, and is characterized in that the width of said groove on the internal element is greater than the thickness of the pipe and its maximum depth is equal to at least a quarter of the thickness of the pipe, and that the external wall of the sleeve has a circumferential protruding bead in line with its area which is found in correspondence with the groove of the internal element with interposition of the wall of the pipe, the width of said groove being less at the width of the groove of the internal element and height greater than the depth of the groove, so that the compression of the sleeve by action of
- FIG. 3 shows an axial section view similar to that of Figure 2, showing enlarged detail
- - Figure 4 shows a view in section like that shown in Figure 2 after the final tightening action of the fitting has been applied.
- the fitting in accordance with the invention comprises a body generically indicated with 10, of any configuration desired to be connected to another element that is not shown of a hydraulic plant.
- Element 11 onto which pipe 12 is intended to be fitted, comes out of the generic body 10.
- Element 11 presents a suitable number of grooves 13, in the example two.
- a sleeve 20 is also provided which is intended to be inserted around the pipe fitted onto the element 11 until it comes up against a shoulder 16, as can be seen in Figure 2.
- an edge of the sleeve has a temporary holding axial coupling 21 on a complementary seat 15 of the corresponding extremity of the element 11.
- This coupling can be of simple interference with limited pressure, or the claw, filet, bayonet or similar type, and it is useful to fix the position of the sleeve when presetting the joint, so that accidental movements cannot occur too easily.
- Protruding beads 22 are machined on the external surface of the sleeve 20, which come into alignment with grooves 13 of the internal element when the parts of the joint are assembled, as shown in Figure 2.
- the elements 15 and 21 must define the limit position of the sliding of the sleeve in such a position that the protruding beads 22 and the grooves 13 come into mutual alignment .
- the forced pre-assembly of the sleeve 20 enables the installer to fit the pipe onto the element 11 without having to pay attention to the correct axial alignment of the parts to align the protruding bead 22 with the grooves 13.
- One or more radial holes 23 can be made in the sleeve, through which the pipe fitted onto the joint can be seen.
- a circumferential band 17 is made on element 11 with surface machining creating roughness, for example direct tooth reeding like the generators of the element.
- the sleeve receives a deforming action differentiated by the clamp tool, concentrated where said beads are present, so that the sleeve deforms the wall of the pipe 12 to penetrate the grooves 13 that are aligned with the beads 22, as shown in Figure 4.
- the pipe is positioned and held with a winding path between the element 11 and the sleeve 20, permanently deformed and with excellent axial hold.
- the controlled deformation of the sleeve in accordance with the aims of the invention, is not influenced by the exact axial positioning of the tool used for its radial compression.
- Figure 3 shows an enlarged detail of the section of Figure 2 where details have been neglected, such as the elastic gaskets and their seats, for representation clarity, of important dimensions of parts of the fitting.
- the width Ll of each groove 13 must be greater than the thickness s of the pipe to which the fitting is intended, which is usually slightly less than the distance between the cylindrical wrapper surface of the external surface of the element 11 and the internal surface of the sleeve 20 before the deformation.
- Ll is greater than 1.5 s.
- the depth Hi of the groove 13 will have to be at least equal to 0.25 the thickness s of the pipe.
- the width L2 of the protrusion 22 must be less than the width Ll of the opposite groove 13 and the height H2 equal to or greater than the height Hi of the groove. It has been found that it must be verified that H2 is between the interval 1 ⁇ 1.5 HI, preferably around 1.3 HI.
- the dimensional ratios specified above originate from the requirement, according to the aims of the invention, that the pipe can be deformed radially to take on a winding path by deformation of the sleeve 20, without however excessive localized pressures being created that deform the pipe in the sense of excessively lessening the thickness.
- the width of the ring-like protrusions 22 of the sleeve is lower than the width of the corresponding grooves 13, so that the material of the sleeve moved by the pressure on the protrusions can operate on a section of pipe that can be deformed with reduction of the average diameter so that it is accepted by the grooves .
- the materials that can be used for making the joint are variably chosen by the technician, in accordance with the functional requirements of the various parts.
- the internal element 11 can be metal, for example in brass, or in plastic material with suitable mechanical characteristics .
- the sleeve 20 will be made generally in a metallic material, with suitable plastic deformation characteristics, such as annealed brass .
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Joints Allowing Movement (AREA)
- Cable Accessories (AREA)
- Joints With Pressure Members (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/540,964 US7364206B2 (en) | 2003-01-08 | 2003-12-17 | Compression fitting for pipes |
EP03785848A EP1581764B1 (en) | 2003-01-08 | 2003-12-17 | Compression fitting for pipes |
DE60320852T DE60320852D1 (en) | 2003-01-08 | 2003-12-17 | COMPRESSABLE PIPE CONNECTION |
AU2003294875A AU2003294875A1 (en) | 2003-01-08 | 2003-12-17 | Compression fitting for pipes |
DK03785848T DK1581764T3 (en) | 2003-01-08 | 2003-12-17 | Compression fitting for pipes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000010A ITMI20030010A1 (en) | 2003-01-08 | 2003-01-08 | COMPRESSION FITTING FOR PIPES. |
ITMI2003A000010 | 2003-01-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004063615A1 true WO2004063615A1 (en) | 2004-07-29 |
Family
ID=32697273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/014367 WO2004063615A1 (en) | 2003-01-08 | 2003-12-17 | Compression fitting for pipes |
Country Status (10)
Country | Link |
---|---|
US (1) | US7364206B2 (en) |
EP (1) | EP1581764B1 (en) |
AT (1) | ATE394625T1 (en) |
AU (1) | AU2003294875A1 (en) |
DE (1) | DE60320852D1 (en) |
DK (1) | DK1581764T3 (en) |
ES (1) | ES2306910T3 (en) |
IT (1) | ITMI20030010A1 (en) |
PT (1) | PT1581764E (en) |
WO (1) | WO2004063615A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1653142A1 (en) * | 2004-10-28 | 2006-05-03 | FRÄNKISCHE ROHRWERKE GEBR. KIRCHNER GmbH & Co KG | Press-fitting |
WO2008000358A1 (en) * | 2006-06-30 | 2008-01-03 | Rehau Ag + Co | Connecting fitting |
WO2017157383A1 (en) * | 2016-03-15 | 2017-09-21 | Schaeffler Technologies AG & Co. KG | Connector arrangement |
WO2019002323A1 (en) * | 2017-06-27 | 2019-01-03 | Fränkische Rohrwerke Gebr. Kirchner Gmbh & Co. Kg | Press-fit sleeve |
Families Citing this family (28)
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---|---|---|---|---|
US20070152442A1 (en) * | 2002-06-13 | 2007-07-05 | Dayco Products, Llc | Brazeless connector for fluid transfer assemblies |
US20060226652A1 (en) | 2005-03-24 | 2006-10-12 | Fischer Neal W | Seal and method for a watertight connection in a water service |
US7946629B2 (en) * | 2005-10-07 | 2011-05-24 | Flexpipe Systems Inc. | Pipe coupling and method for installation |
CN200943796Y (en) * | 2006-09-14 | 2007-09-05 | 佛山市日丰企业有限公司 | Press-fitting pipe fitting |
US20080122222A1 (en) * | 2006-11-29 | 2008-05-29 | H & H Tube & Manufacturing Co. | Crimp-on transition fitting |
ITTO20080403A1 (en) * | 2008-05-27 | 2009-11-28 | Dayco Fluid Technologies Spa | FITTING AND ADDUCTION GROUP FOR A AIR CONDITIONING CIRCUIT |
US9458958B2 (en) | 2009-03-03 | 2016-10-04 | Neoperl Gmbh | Hose coupling |
DE102009011411B4 (en) * | 2009-03-03 | 2014-09-18 | Neoperl Gmbh | Sanitary hose coupling |
US9447904B2 (en) | 2009-03-03 | 2016-09-20 | Neoperl Gmbh | Hose coupling |
US9261213B2 (en) | 2009-03-03 | 2016-02-16 | Neoperl Gmbh | Hose coupling |
US8123257B1 (en) | 2009-04-14 | 2012-02-28 | Sioux Chief Mfg. Co., Inc. | Crimp sleeve for flexible tubing |
US8888141B2 (en) * | 2009-10-30 | 2014-11-18 | Caterpillar Inc. | Fluid coupling assembly and method of manufacture |
JP5556624B2 (en) * | 2010-11-29 | 2014-07-23 | 株式会社デンソー | Piping joint |
ES2653697T3 (en) | 2010-12-02 | 2018-02-08 | Victaulic Company | Pipe element with support surface, groove and flange and manufacturing procedures and devices |
DK2691680T3 (en) * | 2011-03-28 | 2017-07-17 | Flexin Group S R L | STUDS TO HOSE |
DE202011102083U1 (en) * | 2011-06-21 | 2012-09-24 | Neoperl Gmbh | Hose nipple and hose assembly |
WO2013033134A1 (en) | 2011-09-02 | 2013-03-07 | Victaulic Company | Spin forming method |
US20130076024A1 (en) * | 2011-09-26 | 2013-03-28 | E I Du Pont De Nemours And Company | Hose coupling with a non-swaged portion |
CA2884736C (en) | 2012-09-14 | 2022-07-19 | Franklin Fueling Systems, Inc. | Drop tube segment |
US9470351B2 (en) | 2013-03-11 | 2016-10-18 | Hanon Systems | Crimp fitting having reversed barbs |
US9827968B2 (en) | 2015-01-12 | 2017-11-28 | Sram, Llc | Hydraulic bicycle system |
WO2017095692A1 (en) * | 2015-11-30 | 2017-06-08 | Victaulic Company | Sprinkler adapter and pipe plug |
DE102016110769B4 (en) * | 2016-06-13 | 2019-09-12 | Alexander Binzel Schweisstechnik Gmbh & Co. Kg | Joining connection and method for welding torch components |
US11541581B2 (en) | 2016-09-02 | 2023-01-03 | Zurn Industries, Llc | Injection molded cold-expansion compression collar |
US11543065B2 (en) | 2016-09-02 | 2023-01-03 | Zurn Industries, Llc | Extruded cold-expansion compression collar |
US11054076B2 (en) | 2016-11-04 | 2021-07-06 | Zurn Industries, Llc | Reinforcing ring with sleeve |
CN210179146U (en) * | 2019-04-24 | 2020-03-24 | 日丰企业集团有限公司 | Connecting joint for connecting metal pipe and plastic pipe |
US10837582B1 (en) * | 2020-02-14 | 2020-11-17 | Trinity Bay Equipment Holdings, LLC | Wedged protrusion profile fitting seal systems and methods |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR54476E (en) * | 1946-03-08 | 1950-05-02 | Bowden Eng Ltd | Coupling for flexible hoses |
GB1440084A (en) * | 1972-09-16 | 1976-06-23 | Aeroquip Gmbh | Hydraulic hose |
AU510400B2 (en) * | 1977-05-13 | 1980-06-26 | Frederick Duffield Pty Limited | Hose connector |
WO1995026480A1 (en) * | 1994-03-28 | 1995-10-05 | Tour & Andersson Ab | Apparatus for attachment of pipes |
EP1134473A1 (en) * | 2000-03-14 | 2001-09-19 | Mapress GmbH & Co. KG | Press-fitted pipe joint |
DE10137078C1 (en) * | 2001-07-28 | 2003-01-02 | Uponor Ab Fristad | Press fitting for plastic or multilayer composite pipes comprises a sealing element completely arranged within an outer peripheral annular groove of a support sleeve, and a plastically deformable press sleeve surrounding the support sleeve |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1581028A (en) * | 1976-04-08 | 1980-12-10 | Btr Industries Ltd | Hose end untis |
US4407532A (en) * | 1981-01-26 | 1983-10-04 | Dana Corporation | Hose end fitting |
US4990106A (en) * | 1989-06-12 | 1991-02-05 | John Mezzalingua Assoc. Inc. | Coaxial cable end connector |
US5456914A (en) * | 1993-01-26 | 1995-10-10 | Board Of Regents Of The University Of Nebraska | Transthoracic intrapulmonary immunization against Actinobacillus pleuropneumoniae |
DE19607630C1 (en) | 1996-02-29 | 1997-07-31 | Hewing Gmbh | Press fitting for connecting a pipe |
US6598905B2 (en) * | 2000-12-29 | 2003-07-29 | Visteon Global Technologies, Inc. | Hose coupling |
US6523862B1 (en) * | 2001-03-14 | 2003-02-25 | James MacDuff | Tubing connector with integrated crimp ring and reaming tool for use therewith |
-
2003
- 2003-01-08 IT IT000010A patent/ITMI20030010A1/en unknown
- 2003-12-17 WO PCT/EP2003/014367 patent/WO2004063615A1/en active IP Right Grant
- 2003-12-17 EP EP03785848A patent/EP1581764B1/en not_active Expired - Lifetime
- 2003-12-17 US US10/540,964 patent/US7364206B2/en not_active Expired - Fee Related
- 2003-12-17 PT PT03785848T patent/PT1581764E/en unknown
- 2003-12-17 ES ES03785848T patent/ES2306910T3/en not_active Expired - Lifetime
- 2003-12-17 DE DE60320852T patent/DE60320852D1/en not_active Expired - Lifetime
- 2003-12-17 DK DK03785848T patent/DK1581764T3/en active
- 2003-12-17 AU AU2003294875A patent/AU2003294875A1/en not_active Abandoned
- 2003-12-17 AT AT03785848T patent/ATE394625T1/en active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR54476E (en) * | 1946-03-08 | 1950-05-02 | Bowden Eng Ltd | Coupling for flexible hoses |
GB1440084A (en) * | 1972-09-16 | 1976-06-23 | Aeroquip Gmbh | Hydraulic hose |
AU510400B2 (en) * | 1977-05-13 | 1980-06-26 | Frederick Duffield Pty Limited | Hose connector |
WO1995026480A1 (en) * | 1994-03-28 | 1995-10-05 | Tour & Andersson Ab | Apparatus for attachment of pipes |
EP1134473A1 (en) * | 2000-03-14 | 2001-09-19 | Mapress GmbH & Co. KG | Press-fitted pipe joint |
DE10137078C1 (en) * | 2001-07-28 | 2003-01-02 | Uponor Ab Fristad | Press fitting for plastic or multilayer composite pipes comprises a sealing element completely arranged within an outer peripheral annular groove of a support sleeve, and a plastically deformable press sleeve surrounding the support sleeve |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1653142A1 (en) * | 2004-10-28 | 2006-05-03 | FRÄNKISCHE ROHRWERKE GEBR. KIRCHNER GmbH & Co KG | Press-fitting |
WO2008000358A1 (en) * | 2006-06-30 | 2008-01-03 | Rehau Ag + Co | Connecting fitting |
WO2017157383A1 (en) * | 2016-03-15 | 2017-09-21 | Schaeffler Technologies AG & Co. KG | Connector arrangement |
WO2019002323A1 (en) * | 2017-06-27 | 2019-01-03 | Fränkische Rohrwerke Gebr. Kirchner Gmbh & Co. Kg | Press-fit sleeve |
Also Published As
Publication number | Publication date |
---|---|
DK1581764T3 (en) | 2008-09-01 |
DE60320852D1 (en) | 2008-06-19 |
ES2306910T3 (en) | 2008-11-16 |
PT1581764E (en) | 2008-08-19 |
ITMI20030010A1 (en) | 2004-07-09 |
AU2003294875A1 (en) | 2004-08-10 |
US20060071469A1 (en) | 2006-04-06 |
ATE394625T1 (en) | 2008-05-15 |
EP1581764B1 (en) | 2008-05-07 |
US7364206B2 (en) | 2008-04-29 |
EP1581764A1 (en) | 2005-10-05 |
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