WO1999001692A1 - Pipe retainer - Google Patents
Pipe retainer Download PDFInfo
- Publication number
- WO1999001692A1 WO1999001692A1 PCT/GB1998/001968 GB9801968W WO9901692A1 WO 1999001692 A1 WO1999001692 A1 WO 1999001692A1 GB 9801968 W GB9801968 W GB 9801968W WO 9901692 A1 WO9901692 A1 WO 9901692A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- fixing member
- section
- bifurcated
- convoluted
- 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
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/0036—Joints for corrugated pipes
- F16L25/0045—Joints for corrugated pipes of the quick-acting type
-
- 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
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
- F16L37/1225—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members using a retaining member the extremities of which, e.g. in the form of a U, engage behind a shoulder of both parts
Definitions
- the invention relates to a pipe retainer and is particularly, but not exclusively, concerned with the retention of a convoluted pipe on to for example, a vapour outlet for a fuel tank.
- Another arrangement for holding the pipe sealmgly in place is to use a barbed nipple which presents a tapered lead-in surface over which an end of the pipe is pushed, the barb resisting removal of the pipe once it has been pushed fully into position.
- a barbed nipple which presents a tapered lead-in surface over which an end of the pipe is pushed, the barb resisting removal of the pipe once it has been pushed fully into position.
- the shape of the barbed fitting is quite critical and, bearing in mind that the characteristics of the pipe will generally change with temperature and contact with the fuel, the arrangement is not altogether satisfactory.
- An object of the present invention is to provide an improved form of a pipe retainer.
- a fixing member for holding a pipe to another member, the fixing member comprising a bifurcated first section having two fingers which can be positioned adjacent an abutment surface on the pipe, the fingers being arranged one each side of the pipe, and a second section extending from the bifurcated first section for co-operation with a fixing part to inhibit separation of the pipe from the other member.
- the said second section of the fixing member is bifurcated and spaced from the first bifurcated section and an elongate section interconnects the first and second bifurcated sections.
- the elongate section may comprise a strip or rod of material which may be rigid or flexible.
- each bifurcated section may be arranged to snap over the pipe so that, once in position on the pipe, removal of the fixing member is inhibited.
- the second bifurcated section may likewise snap over part of the member on which the pipe is to be retained so that removal of the fixing member is inhibited.
- the said second section of the fixing member extending from the bifurcated first section comprises spaced apart elongate arms having transversely directed locking surfaces which co-operate with the said fixing part to hold the pipe in place.
- the free ends of the two fingers are joined together by a loop of material, defining an opening between the loop and the fingers, whereby the fixing member can be retained on the pipe in captive manner with sufficient play to allow coupling and decoupling of the pipe to and from the other member.
- a fixing member for holding a pipe to another member, the fixing member comprising a bifurcated first section having two fingers which, in use lie one each side of one of the components and co-operate with an abutment surface thereon and spaced apart elongate arms extending from the bifurcated first section and having transversely directed locking surfaces which co-operate with an abutment surface on the other of the components to hold the components together.
- At least one of the arms may be moved into a locking position by a pivotal arrangement which operates as a result of urging the pipe on to the said component.
- a release lever may be provided for pivoting the said arm in an opposite direction to enable the fixing member to be released.
- a retainer for a convoluted pipe comprising a peripheral sealing element disposed in a space between two adjacent convolutions of the pipe and a fixing member having a first section which is locatable in a space between two adjacent convolutions of the pipe and a second section which co-operates with a fixed part, the pipe, in use, being received axially by a cylindrical or like member whereby the sealing element seals between a surface of the cylindrical member and a surface of the convoluted pipe, the fixing member being arranged to prevent the pipe being withdrawn from the cylindrical member.
- the fixed part may comprise a surface, for example a radial surface, on the cylindrical member.
- the sealing element is arranged externally around the pipe and the pipe is received into the cylindrical member so that sealing is effected between the sealing element and an inner surface of the cylindrical member.
- the cylindrical member may comprise a first portion defining the surface against which the sealing element seals and a second portion of different diameter which may lead, for example, to the fuel tank.
- an annular shoulder is defined between the first and second portions which provides the said part co-operable with the second section of the fixing member.
- two sealing elements may be provided in respective spaces between convolutions.
- the pipe may be reinforced in the area occupied by the or each sealing element.
- a stiffening element such as a rigid tube of material may be provided to stiffen the pipe m the area occupied by the or each sealing element.
- the stiffening element is preferably arranged inside the pipe.
- the pipe may have its internal diameter increased to receive the stiffening element so that, when the stiffening element is in place, the internal bore of the pipe is not decreased substantially.
- the said member to which the pipe is attached may be of the aforesaid cylindrical member or may be, for example, a cylindrical sleeve, the cylindrical sleeve having open ends into which respective ends of two pipes are passed.
- the first section of the fixing member may be bifurcated to define a pair of fingers which can fit between two adjacent convolutions, the fingers being arranged one-each side of the pipe.
- Fig 1 is a diagrammatic cross-section through part of a convoluted pipe having a retainer m accordance with the invention
- Fig 2 is a plan view of one form of fixing member of the retainer shown in Fig 1;
- Figs 3 and 4 are end views of the fixing member shown m Fig 2 looking respectively in the directions of arrows III and IV
- Fig 5 is a plan view similar to Fig 2 but showing a modified form of fixing member
- Fig 6 is a cross-section showing two pipes joined together by means of a hose and held in the hose by means of a fixing member of the kind shown in Fig 2 or 5;
- Fig 7 is a perspective view of an alternative type of fixing member;
- Fig 8 shows the way in which one arm of the fixing member shown m Fig 7 can be modified to provide a pivotal locking action
- Fig 9 shows the way in which the pipe can be retained on the outside of a cylindrical member
- Fig 10 is a part cross-section, part side elevation of two pipes joined together and held by means a fixing member in accordance with the first two aspects of the invention
- Fig 11 is a bottom plan view of the two coupled pipes of Fig 10 looking in the direction of arrow XI in Fig 10;
- Fig 12 is a perspective view of the fixing member shown in Figs 10, 11 and
- Figs 13, 14 and 15 are perspective views of respective fixing members in accordance with the invention.
- a convoluted pipe 10 of known kind has a plurality of equi-spaced convolutions 12 defining spaces 13 therebetween to permit easy flexing of the pipe.
- Such pipes may be used in a fuel system, for example, to conduct vapour from a fuel tank in a vehicle. In such a case, it is- necessary for the pipe 10 to be secured firmly and sealingly to an outlet 14 on the fuel tank which is generally indicated at 16.
- two spaces between the convolutions 12 are occupied by respective O-rings 16 which seal against sides 12a, 12b of their associated convolutions and project outwardly beyond the radial extremities of the convolutions.
- the section of the pipe 10 carrying the seals 16 is then inserted into the outlet 14 (which is cylindrical in the example shown) so that the seals 16 make sealing contact with the internal surface of the outlet 14.
- the outlet 14 includes a reduced diameter portion 14a so as to define an annular shoulder 18.
- a fixing member 20 is then placed in position to secure the pipe 10 in the outlet 14 and reference is now made to Figs 2 to 5.
- Fig 2 shows a first type of fixing member 20 comprising spaced apart bifurcated first and second end sections 22, 24 interconnected by a strip of material 26.
- the end sections 22, 24 are of horse shoe form in order that the end sections will snap fit into position as described below.
- the fixing member 20 is formed as a plastics injection moulding.
- Fig 5 has similar bifurcated end sections 22, 24 which are interconnected by a flexible rod 28 to facilitate relative off-set positioning of the end sections as shown in broken lines in Fig 5 which may be advantageous in certain arrangements .
- the fixing member 20 is arranged as shown in Fig 1 with the end section 24 snap-fitted around the pipe 10 so that fingers 24a of the end section 24 pass between adjacent corrugations 12 and snap- fit around the pipe 10 as indicated in Fig 4.
- the other bifurcated end section 22 extends behind the annular shoulder 18 so that fingers 22a thereof snap-fit around the reduced diameter section 14a as indicated in broken lines in Fig 3.
- the fixing member 20 then inhibits removal of the pipe 10 from the outlet 14.
- Fig 6 shows the way in which the fixing member 20 can be used to hold two pipes 30, 32 together with the pipe ends being sealed together by an interconnecting hose 34.
- Each pipe 30, 32 has a peripheral abutment flange 36 (or may be convoluted) and the end sections 22, 24 of the fixing member are formed so as to snap-fit around the tubes 30, 32 respectively behind the flanges 36 to prevent the pipes being withdrawn from the hose 34. Where the pipes 30, 32 are convoluted, the end sections 22, 24 will fit between adjacent convolutions.
- a bifurcated end section 38 has fingers 38a which form an inverted U-shape or, as shown in broken lines, a horse shoe shape similar to that shown in Fig 4.
- the fingers 38a have respective arms 40 extending therefrom.
- Each arm 40 being formed with a ramp section 42 leading to a locking surface 44.
- the end section 38 is positioned between adjacent corrugations 12, for example, before the pipe 10 is assembled into the outlet 14.
- the ramp sections 42 ride up and along the outside of the outlet 14 and when the pipe 10 reaches the position shown m Fig 1, the locking surfaces 44 snap behind the annular shoulder 18 to inhibit removal of the pipe.
- the horse shoe shaped version will snap over the pipe 10 to hold the end section 38 in position.
- one of the arms 40 may be provided with a pivotal locking mechanism 45.
- the arm 40 is formed with an inwardly projecting cam 46 which is movable about a hinge portion 48.
- a neck portion 50 is defined opposite the hinge portion 48 and an outwardly projecting lever 52 is formed integrally on the arm 40.
- the arm 40 takes the form shown in full lines in Fig 8.
- a nose part 44a of the ramp section 42 simply slides along the outlet 14 until the cam 46 encounters the outlet.
- Further movement of the fixing member 20 along the outlet 14 causes the cam 46 to be urged outwardly about the hinge 48 thereby tipping the locking surface 44 inwardly as shown in broken lines in Fig 8. In that way, the fixing member 20 latches securely in position on the outlet 14 with the locking surface 44 behind the annular shoulder 18.
- a user can simply press the lever 52 inwards to move the locking surface 44 back towards the full line position to enable the fixing member to be removed manually with one hand.
- both of the arms 40 could be formed as shown in Fig 8.
- the arms 40 can be interconnected by a circular linking strap 54 extending between the cams 46 as shown diagram atically in broken lines in Fig 7.
- the linking strap 54 will effectively prevent the arms 40 from deforming outwardly as outward movement of the cam 46 causes the locking surface 44 to move inwardly.
- a rigid tube 56 is inserted into the pipe 10 inside the region carrying the sealing rings 16.
- that part of the pipe 10 may be formed so as to be of slightly greater internal diameter than the remainder of the pipe. In that way, the internal diameter of the tube 56 can be the same as the diameter of the remainder of the pipe so as not to reduce cross-sectional area of the flow path through the pipe 10.
- the seals 16 are arranged inside the pipe 10 and seal against the outside of a cylindrical member 114 which may comprise an outlet from a fuel tank.
- the cylindrical member is formed with a radial projection 60, eg an annular shoulder, for co-operation with the bifurcated end section 22 of the fixing member 20.
- the other bifurcated end section 24 locates between adjacent convolutions 12 as before.
- the fixing member of Fig 7 or Fig 8 could be used. In such a case, the arms 40 could be used to inhibit radial expansion of the pipe at least to some extent due to the sealing contact of the seals 16 against the cylindrical member 114.
- FIGs 10 and 11 an alternative type coupling is shown in which the retainer 20 can be used.
- a pipe 10 which can be convoluted or straight receives a push- in type coupling member 62 which comprises an elongate hollow nipple part 64 with annular barbs or crenellations 66 defined on the outer surface thereof.
- a sealing '0' ring 68 is retained in an annular recess 70 m the wall of the nipple part 64.
- the coupling member 62 further includes a radially extending annular shoulder 72 which extends from one end of the nipple part 64 and a cylindrical part 74 which extends from the shoulder 72.
- the nipple part 64 is pushed into the end of the pipe 10.
- the '0' ring 68 seals against the inner wall of the pipe 10 to prevent fluid travelling down the pipe 10 from escaping at the coupling.
- the cylindrical part 74 of the coupling 62 receives a grommet seal 76 having a small annular projecting lip 76a.
- the grommet 76 receives a cylindrical part 78 of a second pipe member 80 which may be an outlet from a fuel tank.
- the pipe 80 includes an annular shoulder 82 which abuts the lip 76a of the grommet seal 76 which in turn abuts the upper rim of the cylindrical part 74 of the coupling element 62.
- the cylindrical part 74 of the coupling member 62, the grommet seal 76 and the cylindrical part 78 and annular shoulder 82 of the pipe 80 are dimensioned so as to form a tight fit.
- the fixing member 20 shown in Figs 10 and 11 is illustrated in more detail in Fig 12.
- the fixing member 20 in Fig 12 s similar to those shown in Figs 2 to 5 and parts corresponding to parts in those figures carry the same reference numerals.
- Fixing member 20 comprises first and second bifurcated end sections 22, 24 which are connected by three strips of material 26.
- the bifurcated section 22 comprises fingers 22a which define a substantially circular space 22b therebetween.
- the bifurcated end section 24 comprises fingers 24a defining substantially circular opening 24b.
- the opening 24b is designed to be arranged around the pipe 10 and the opening 22b is designed to be arranged around the pipe 80. Since the pipes may have different diameters, the openings 22b and 24b may differ in size. Accordingly, an arrow 88 is moulded into the top part of the middle strip of material 26 to indicate the correct orientation of the fixing member 20 on the pipe coupling.
- the fingers 22a and 24a of the bifurcated end section 22, 24 are arranged in such a way that the fixing member 20 snaps on to the pipes 10 and 80 and can be snapped off, if desired.
- the fingers 22a, 24a abut the shoulders 82, 72 respectively to prevent the coupling from coming apart.
- the fixing members 20 shown in Figs 13 to 15 are intended to be retained in a captive manner on the pipe 10.
- the fixing member 20 shown in Fig 13 comprises bifurcated end sections 22, 24 comprising respective pairs of fingers 22a, 24a interconnected by two strips of material 26.
- the fingers 24a are joined together at their free ends by a loop of material 90 defining a large aperture 92.
- the opening 24b and aperture 92 define a single opening having a large section and a smaller section in the manner of a keyhole.
- the fixing member 20 is assembled on to the pipe 10 prior to the coupling member 62 being inserted into the pipe 10.
- the pipe 10 at that point is received through the large aperture 92 which allows enough play to assemble the coupling element 62 into the pipe 10 and the grommet 76 and pipe 80 into the coupling element 62.
- the fixing member 20 is moved into position adjacent the shoulder 72 and snapped onto the pipe 10 and the bifurcated end 22 is snapped over the pipe 80 adjacent the shoulder 82. In that way, if the fixing member 20 is removed from the coupling, it is held captive on the pipe 10 by the coupling element 62 so that the fixing member cannot be lost during decoupling and recouplmg of the pipes 10, 80
- the fixing memoer 20 shown m Fig 14 is substantially similar to that shown in Fig 13 with the difference that the loop of material 90 is rather thicker to increase the strength of the member 20.
- the fixing member 20 shown in Fig 15 is rather similar to that shown in Fig 7 with the additional feature of the loop of material 90 to allow retention of the fixing member 20 on the pipe 10 as described above. It will be appreciated that the retainer of the present invention both secures and seals the pipe 10 in position.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98932366A EP0995062A1 (en) | 1997-07-05 | 1998-07-03 | Pipe retainer |
CA002294867A CA2294867A1 (en) | 1997-07-05 | 1998-07-03 | Pipe retainer |
AU82303/98A AU8230398A (en) | 1997-07-05 | 1998-07-03 | Pipe retainer |
JP2000501362A JP2001509567A (en) | 1997-07-05 | 1998-07-03 | Pipe retainer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9714187.3A GB9714187D0 (en) | 1997-07-05 | 1997-07-05 | Pipe retainer |
GB9714187.3 | 1997-07-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999001692A1 true WO1999001692A1 (en) | 1999-01-14 |
Family
ID=10815417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1998/001968 WO1999001692A1 (en) | 1997-07-05 | 1998-07-03 | Pipe retainer |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0995062A1 (en) |
JP (1) | JP2001509567A (en) |
AU (1) | AU8230398A (en) |
CA (1) | CA2294867A1 (en) |
GB (1) | GB9714187D0 (en) |
WO (1) | WO1999001692A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1036971A1 (en) * | 1999-03-16 | 2000-09-20 | Pma Ag | Corrugated pipe connector with a blocking element |
EP1519096A1 (en) * | 2003-09-25 | 2005-03-30 | BBT Thermotechnik GmbH | Pressure-tight coupling between a corrugated pipe, or a connector and a connecting member |
WO2005103552A1 (en) * | 2004-04-21 | 2005-11-03 | Christoph Lamowski | Sleeve joint for moulded pipe parts and pipes |
EP1637791A3 (en) * | 2004-09-21 | 2006-05-17 | ITT Manufacturing Enterprises, Inc. | Fluid quick connector with slidable retainer |
EP2341272A1 (en) * | 2010-01-05 | 2011-07-06 | Jumo Mess-Und Regeltechnik AG | Assembly for sealing a nipple joint |
DE102010012531A1 (en) * | 2010-03-23 | 2011-09-29 | Witzenmann Gmbh | Connection and method for connecting a corrugated pipe with a connection pipe part, in particular a solar collector |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011130550A2 (en) | 2010-04-14 | 2011-10-20 | Alliant Techsystems Inc. | Marking ammunition |
WO2013109634A1 (en) | 2012-01-16 | 2013-07-25 | Alliant Techsystems Inc. | Spin stabilized non-lethal projectile with a shear-thinning fluid |
JP5920987B2 (en) * | 2013-01-11 | 2016-05-24 | 株式会社Lixil | Pipe fitting |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3881753A (en) * | 1973-06-04 | 1975-05-06 | Michael E Bochory | Fastener mechanism |
EP0349778A2 (en) * | 1988-07-05 | 1990-01-10 | Mitsubishi Plastics Industries Limited | A corrugated pipe, a method of forming the corrugated pipe and an apparatus for manufacturing the same |
US5350201A (en) * | 1993-01-15 | 1994-09-27 | Moeller Manufacturing Co., Inc. | Separable connector external capture device |
US5626371A (en) * | 1990-01-16 | 1997-05-06 | Bartholomew; Donald D. | Quick connector with one-piece retainer |
US5725258A (en) * | 1995-02-23 | 1998-03-10 | Bundy Corporation | Fluid quick connector |
-
1997
- 1997-07-05 GB GBGB9714187.3A patent/GB9714187D0/en active Pending
-
1998
- 1998-07-03 JP JP2000501362A patent/JP2001509567A/en active Pending
- 1998-07-03 WO PCT/GB1998/001968 patent/WO1999001692A1/en not_active Application Discontinuation
- 1998-07-03 EP EP98932366A patent/EP0995062A1/en not_active Withdrawn
- 1998-07-03 CA CA002294867A patent/CA2294867A1/en not_active Abandoned
- 1998-07-03 AU AU82303/98A patent/AU8230398A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3881753A (en) * | 1973-06-04 | 1975-05-06 | Michael E Bochory | Fastener mechanism |
EP0349778A2 (en) * | 1988-07-05 | 1990-01-10 | Mitsubishi Plastics Industries Limited | A corrugated pipe, a method of forming the corrugated pipe and an apparatus for manufacturing the same |
US5626371A (en) * | 1990-01-16 | 1997-05-06 | Bartholomew; Donald D. | Quick connector with one-piece retainer |
US5350201A (en) * | 1993-01-15 | 1994-09-27 | Moeller Manufacturing Co., Inc. | Separable connector external capture device |
US5725258A (en) * | 1995-02-23 | 1998-03-10 | Bundy Corporation | Fluid quick connector |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1036971A1 (en) * | 1999-03-16 | 2000-09-20 | Pma Ag | Corrugated pipe connector with a blocking element |
EP1519096A1 (en) * | 2003-09-25 | 2005-03-30 | BBT Thermotechnik GmbH | Pressure-tight coupling between a corrugated pipe, or a connector and a connecting member |
WO2005103552A1 (en) * | 2004-04-21 | 2005-11-03 | Christoph Lamowski | Sleeve joint for moulded pipe parts and pipes |
EP1637791A3 (en) * | 2004-09-21 | 2006-05-17 | ITT Manufacturing Enterprises, Inc. | Fluid quick connector with slidable retainer |
EP2341272A1 (en) * | 2010-01-05 | 2011-07-06 | Jumo Mess-Und Regeltechnik AG | Assembly for sealing a nipple joint |
DE102010012531A1 (en) * | 2010-03-23 | 2011-09-29 | Witzenmann Gmbh | Connection and method for connecting a corrugated pipe with a connection pipe part, in particular a solar collector |
Also Published As
Publication number | Publication date |
---|---|
CA2294867A1 (en) | 1999-01-14 |
AU8230398A (en) | 1999-01-25 |
JP2001509567A (en) | 2001-07-24 |
EP0995062A1 (en) | 2000-04-26 |
GB9714187D0 (en) | 1997-09-10 |
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