WO1992008074A1 - Raccord de tuyau - Google Patents

Raccord de tuyau Download PDF

Info

Publication number
WO1992008074A1
WO1992008074A1 PCT/GB1991/001823 GB9101823W WO9208074A1 WO 1992008074 A1 WO1992008074 A1 WO 1992008074A1 GB 9101823 W GB9101823 W GB 9101823W WO 9208074 A1 WO9208074 A1 WO 9208074A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
collar
connector
sprag
cylindrical portion
Prior art date
Application number
PCT/GB1991/001823
Other languages
English (en)
Inventor
Ronald Pardy
Original Assignee
Ford Motor Company Limited
Ford Werke A.G.
Ford France S.A.
Ford Motor Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Motor Company Limited, Ford Werke A.G., Ford France S.A., Ford Motor Company filed Critical Ford Motor Company Limited
Publication of WO1992008074A1 publication Critical patent/WO1992008074A1/fr

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
    • 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
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/098—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of flexible hooks
    • F16L37/0985—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of flexible hooks the flexible hook extending radially inwardly from an outer part and engaging a bead, recess or the like on an inner part
    • 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
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/0842—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring which is split into a plurality of component parts which are held in place by means of a resilient ring member
    • 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
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/0847—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of hooks
    • F16L37/0848—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of hooks rocking freely

Definitions

  • This invention relates to a tube connector for use in making a sealed and locked connection between two tubes or tubular bodies through which a fluid will flow.
  • Tube connectors for providing a push-together or 'quick-fit' connection are well known.
  • the locking function of the connector becomes operative before the sealing function.
  • the tube has a hard surface (eg chrome plating), then the teeth will rapidly wear unless they are of an equally hard finish.
  • the sealing function is achieved before the 0 mechanical lock.
  • This type of connector relies on a shoulder formed on the tube to be pushed in to the connector and thus requires an additional manufacturing step. It does however avoid any damage to the part of the tube surface which provides the seal. 5 SUMMARY OF THE INVENTION
  • a tube connector for connecting a tube which has a radial shoulder to a fluid line
  • the connector comprising a connector body with a through bore for communicating with the fluid line, sealing means in the bore for providing a seal with an inserted tube, and an axially movable collet assembly, the collet assembly comprising an annular collar for receiving and holding the shoulder on a tube, and a sprag toothed component providing a connection between the collar and the internal surface of a cylindrical portion of the connector body.
  • the combination of the locking action of the collar on the tube shoulder, and the axial movement of the collet assembly allows the best features of the two prior art connectors to be combined.
  • the connector has the 'lock before seal* feature of the first type of prior art connector, combined with the avoidance of any damage to those surfaces of the tube which have to engage with the connector seal.
  • the sprag toothed component may be a sprag washer (preferably metal) fitted around a central ring on the collar.
  • the sprag teeth may be formed individually or as a group and may then be moulded into a plastics collar to from part of the collar. The teeth may be moulded integrally with the collar and can then engage in moulded-in detents on the internal surface of the connector body cylindrical portion.
  • the collet assembly consisting of the annular collar and the sprag toothed component may be of all metal construction.
  • the cylindrical portion of the connector body may have a retaining lip to prevent the sprag toothed component, and the collar, from being removed from the body.
  • the collar preferably has an annular recess into which the shoulder on the tube can be snap-fitted using a push-in action, and the collar itself may be moulded from plastics material.
  • the connector body may also be moulded from plastics material, and may have a spigot with annular ridges onto which a flexible tube can be fitted at the end of the body remote from the cylindrical portion.
  • the connector body may be provided with a release mechanism which presses the sprag teeth away from the wall of the cylindrical portion and slides along the cylindrical portion with the collar and the sprag toothed component until the shoulder on the tube can be disconnected from the collar.
  • Figure 1 is a view of an assembled connector in accordance with the invention.
  • FIGS 2,3,4 and 5 show sequential steps in the making of a tube joint with a connector in accordance with the invention.
  • the connector is shown in section with only that part of the connector above the centreline being shown;
  • Figure 6 is a view corresponding to Figures 2 to 5, but illustrating disassembly of the connector
  • Figure 7 is a section through Figure 6 on the lines VII-VII;
  • Figure 8 shows a sprag washer for use in the connector
  • Figure 9 shows a view corresponding to Figure 2 and illustrating an alternative form of collar
  • Figure 10 is a perspective view of the collar of Figure 9.
  • Figure 1 shows an assembled connector with a connector body 10 and a spigot 12 for receiving a flexible tube in a known manner.
  • a tube 14 with a shoulder (not visible in Figure 1) is connected into the body 10.
  • a release trigger 16 and a slot 18 are also visible and will be described later.
  • the connector body 10 has a through bore 22, a seal housing portion 24 and a cylindrical portion 26.
  • Two 0-rings 28 are fitted in the seal housing portion, and are retained there by a retaining ring 30.
  • An annular collar 32 is supported in the mouth of the cylindrical portion 26, and is held there by a sprag-toothed washer 34 which engages between an internal lip 36 on the collar and the internal wall of the cylindrical portion 26.
  • the collar has an outer neck 38 with a bead 40.
  • the tube is pushed further into the connector body, and the outer ends of the sprag teeth on the washer 34 slide along the wall of the cylindrical portion 26. This movement continues until the tube end is received within the O-rings 28, whereupon the tube 14 is both locked and sealed to the connector body.
  • the teeth of the sprag washer 34 slide along the internal wall of the connector body and if an attempt is made to remove the tube simply by pulling it in the opposite direction, then the teeth will bite into the connector wall and resist movement.
  • the teeth will engage against moulded-in, saw-tooth detents on the connector wall.
  • the mechanism comprises an internal ring 42 with an external grip 16. If the ring is pulled to the right as shown in Figure 6, it will lift the sprag teeth away from the wall of the cylindrical portion 26 and will pull the collar to the left until the starting position of Figure 2 is reached again. Excessive movement of the collar is prevented by a retaining lip 48. At this point, the tube 14 with its shoulder 20 can be pulled free from the collar.
  • Figure 8 shows one typical form for the sprag washer which has sprag teeth 44 around the outer perimeter of an annulus 46.
  • the diameter of the release ring 42 will be substantially equal to the diameter of the teeth, so that the ring will bear against the teeth when it is pushed to the right, and force the teeth out of contact with the internal wall of the cylindrical portion 26.
  • Figure 9 shows an alternative embodiment where the collar 32 and the sprag-toothed component are combined in one metal collet 50.
  • the collet has a central aperture 52 which will be a sliding fit on the tube 14, and a number of arms (eg six arms) 54, each of which carries a sprag tooth 56.
  • the freer ends of the arms 54 are bent over so that when these ends are forced radially inwards (this happens when the tube is fully inserted, the bent over ends engage behind and trap the shoulder 20 on the tube.
  • a release mechanism can also be used with this embodiment, working in the same way as with the preceding embodiment, with a release ring 42.
  • the embodiment described thus has the advantages of both types of prior art connector without suffering the disadvantages of these connectors.
  • the manufacture of the connector shown will be no more complicated than manufacture of the prior art connectors.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

Le raccord de tuyau décrit comprend un corps cylindrique (26) dans lequel un tuyau (14) pourvu d'un épaulement (20) peut être introduit pour former une jointure verrouillée étanche aux fluides. Le tuyau (14) est d'abord introduit dans un collier (32) qui assure la fonction de verrouillage, et le collier et le tuyau sont ensuite amenés à coulisser plus avant dans une partie du corps cylindrique (26), jusqu'à ce que l'extrémité du tuyau vienne se plaquer hermétiquement contre des joints toriques (28). Pendant ce mouvement coulissant et dès que la jointure étanche est réalisée, le collier est retenu de façon à ne plus pouvoir sortir du corps du raccord par des dents pointues qui se trouvent sur le collier (32) et qui mordent dans le corps du raccord.
PCT/GB1991/001823 1990-10-24 1991-10-18 Raccord de tuyau WO1992008074A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9023099A GB2249150A (en) 1990-10-24 1990-10-24 A tube connector
GB9023099.6 1990-10-24

Publications (1)

Publication Number Publication Date
WO1992008074A1 true WO1992008074A1 (fr) 1992-05-14

Family

ID=10684258

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/001823 WO1992008074A1 (fr) 1990-10-24 1991-10-18 Raccord de tuyau

Country Status (2)

Country Link
GB (1) GB2249150A (fr)
WO (1) WO1992008074A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0703399A1 (fr) * 1994-09-21 1996-03-27 John Derek Guest Améliorations à ou concernant des raccords de tuyaux avec manchons de retenue
EP0724109A1 (fr) * 1995-01-24 1996-07-31 ARMATURENFABRIK HERMANN VOSS GMBH & CO. Joint à emboîtement pour tuyauterie de fluide à haute pression
EP0691503B1 (fr) * 1992-11-11 1998-06-10 John Derek Guest Raccords de tuyaux
WO2017204239A1 (fr) * 2016-05-24 2017-11-30 日東工器株式会社 Joint de tuyaux comprenant un élément de joint femelle et un élément de joint mâle
WO2022031281A1 (fr) * 2020-08-05 2022-02-10 Oetiker Ny, Inc. Ensemble raccordement de fluide

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9400585D0 (en) * 1994-01-13 1994-03-09 Guest John D Improvements in or relating to tube couplings
US5915738A (en) * 1995-07-28 1999-06-29 Guest; John Derek Tube couplings
GB9515497D0 (en) 1995-07-28 1995-09-27 Guest John D Improvements in or relating to tube couplings
GB9620853D0 (en) * 1996-10-07 1996-11-27 Rea International Inc Connector assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1800604A1 (de) * 1967-10-03 1969-08-07 Ahlstroem Oy Eine Rohrverbindung
EP0306126A1 (fr) * 1987-09-04 1989-03-08 U.S. Plastics Corporation Accouplement à action rapide
US4834423A (en) * 1987-12-22 1989-05-30 Schmelzer Corporation Quick connect fluid fitting assembly
EP0343036A1 (fr) * 1988-05-20 1989-11-23 Automobiles Peugeot Raccord rapide pour tuyau

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847421A (en) * 1972-11-24 1974-11-12 Parker Hannifin Corp Quick connect tube coupling joint
US4749214A (en) * 1985-09-17 1988-06-07 John T. Hoskins Quick connect fluid coupling

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1800604A1 (de) * 1967-10-03 1969-08-07 Ahlstroem Oy Eine Rohrverbindung
EP0306126A1 (fr) * 1987-09-04 1989-03-08 U.S. Plastics Corporation Accouplement à action rapide
US4834423A (en) * 1987-12-22 1989-05-30 Schmelzer Corporation Quick connect fluid fitting assembly
EP0343036A1 (fr) * 1988-05-20 1989-11-23 Automobiles Peugeot Raccord rapide pour tuyau

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0691503B1 (fr) * 1992-11-11 1998-06-10 John Derek Guest Raccords de tuyaux
EP0703399A1 (fr) * 1994-09-21 1996-03-27 John Derek Guest Améliorations à ou concernant des raccords de tuyaux avec manchons de retenue
EP0724109A1 (fr) * 1995-01-24 1996-07-31 ARMATURENFABRIK HERMANN VOSS GMBH & CO. Joint à emboîtement pour tuyauterie de fluide à haute pression
WO2017204239A1 (fr) * 2016-05-24 2017-11-30 日東工器株式会社 Joint de tuyaux comprenant un élément de joint femelle et un élément de joint mâle
JPWO2017204239A1 (ja) * 2016-05-24 2018-08-16 日東工器株式会社 雌型継手部材と雄型継手部材とからなる管継手
US10663099B2 (en) 2016-05-24 2020-05-26 Nitto Kohki Co., Ltd Pipe coupling comprising female coupling member and male coupling member
WO2022031281A1 (fr) * 2020-08-05 2022-02-10 Oetiker Ny, Inc. Ensemble raccordement de fluide

Also Published As

Publication number Publication date
GB9023099D0 (en) 1990-12-05
GB2249150A (en) 1992-04-29

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