WO1994027077A1 - Quick-fit union with tell-tale - Google Patents

Quick-fit union with tell-tale Download PDF

Info

Publication number
WO1994027077A1
WO1994027077A1 PCT/FR1994/000559 FR9400559W WO9427077A1 WO 1994027077 A1 WO1994027077 A1 WO 1994027077A1 FR 9400559 W FR9400559 W FR 9400559W WO 9427077 A1 WO9427077 A1 WO 9427077A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
female
orifice
section
fixing
Prior art date
Application number
PCT/FR1994/000559
Other languages
French (fr)
Inventor
Pascal Le Clinche
Original Assignee
Legris S.A.
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 Legris S.A. filed Critical Legris S.A.
Priority to JP6525065A priority Critical patent/JPH07508090A/en
Priority to EP94916269A priority patent/EP0650570A1/en
Priority to SK1589-94A priority patent/SK158994A3/en
Publication of WO1994027077A1 publication Critical patent/WO1994027077A1/en

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
    • F16L37/0841—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 transversally slidable locking member surrounding the tube
    • 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
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/10—Indicators for correct coupling

Definitions

  • the present invention relates to a quick connector comprising a male part and a female part which are coupled by simple introduction of one into the other and, more particularly, a quick connector and which has means allowing rapid verification of the quality of the coupling performed.
  • the fork must be stiff enough so that its branches cannot be easily spaced from one another by a simple manipulation of rotation around the axis of the coupler, making the wall of the female element play of this coupler a role of cam spreading the branches.
  • the device offers significant resistance to the introduction of the male element of the coupler into the female element which can deceive the installer believing that he has reached a correct connection position.
  • the object of the present invention is to propose a quick connector with a witness to the quality of the connection which is simple and inexpensive to manufacture and the presence of which is not detrimental for a good connection to be made.
  • the subject of the invention is therefore a quick connector comprising an indicator device with a display part projecting outside the connector and a fixing part locked by snapping onto the female part of the connector, this part fixing comprising at least one control element for its unlocking cooperating with an actuating surface carried by the male part of the connector when the latter is correctly placed in the female part which comprises, in a manner known in itself- same, a stage bore whose section of larger diameter can accommodate with radial clearance an external flange of the male part of the connector beyond a latch, the wall of the female part of the connector having at the level of the section more large diameter of the bore, an orifice for installing the fixing part of the indicating device, the edge of the bolt adjacent to it being separated from the latter by a e distance at least equal to the thickness of the flange measured axially while the fixing part comprises a flexible latching tongue in the axial direction of the connector, the end of which projects into the section of the bore on a height greater than the radial clearance when it is introduced into the ori
  • the coupler thus defined is very little modified compared to a normal coupler. Indeed, it only has one orifice for the installation of the indicating device and the attachment means of this device offers only a very low resistance to the penetration of the male part of the coupler into the female part.
  • the orifice is of non-circular section and the fixing part of the display device includes a foot for its embedding in this orifice of corresponding section.
  • the catching tongue When the catching tongue is in use, the extraction movement is not possible even if the tongue is very flexible, which is sought to oppose a minimum force to the coupling of the male and female parts of the connector , this tongue also being very tensile strength when opposed to the extraction of the indicator device.
  • the foot is constituted by two legs framing the flexible tongue.
  • this connector is such that the fixing part of the indicating device comprises on either side of the tongue curvilinear branches forming a stirrup for supporting the device on the external surface of the female element.
  • this stirrup can constitute a clip which constitutes an additional means of holding the indicating device on the connector even when the connection is perfectly made, the effort developed by these two elastic branches forming a clip at the outside of the connector being very weak. In this way, a verifier could ensure that the connection is made correctly by removing the indicating device and, in order not to lose it, replace it, either in the same orientation or in a different orientation to show that the verification has been carried out.
  • this stirrup may include curvilinear branches whose radius is less than that outside of the body of the connector.
  • FIG. 1 is an axial section view of a connector according to the invention in a state where the connection is not perfectly made
  • FIG. 2 is a sectional view identical to that of FIG. 1 illustrating a correctly made connection
  • FIG. 3 is an external view along F of FIG. 1 of the indicator device alone
  • a connector 1 according to the invention comprises a female part 1 divided into several sections.
  • a first section 2 has an internal channel 3 and external means 4, called fir tree tooth, to be introduced inside a tube not shown.
  • the second section 5 of this part 1 has a bore 6 of determined diameter to accommodate the nose of a tip 7 forming the male part of the connector.
  • the third section 8 of this male part has a bore 9 of larger diameter than the bore 6 to accommodate two O-rings 10 and a blocking insert these 11.
  • the internal diameter of one insert is equal to the diameter of the bore 6.
  • the female part 1 has a third section 12 whose internal diameter 13 is even larger than that of the preceding bores in order to allow the free passage with a radial clearance "e" of a flange 14 carried by the end piece 7.
  • the last section 12 of the female part 1 comprises a latch 15 to prevent the extraction of the end piece 7 when it is correctly inserted into the female part 1.
  • This lock 15 is constituted by a ring which can slide radially in the female part 1 in an open housing, produced in the latter and which comprises one or two elastic tabs outer 16 which tend to offset the inner bore of the ring 15 relative to the bore 13.
  • a portion of this inner bore of the ring 15 is in the form of a conical surface 17 so that the passage of the flange 1 4, the ring 15 is lowered to 1 "against the effect of the elastic blades 16 until the flange 14 is housed in the bore 13 beyond this ring 15.
  • the tongues 16 are then decompressed and the ring is found in a free offset position relative to the bore 13 and one of these flanks makes contact with the rear flank of the flange 14 and constitutes a stop sOpposant to the ex ⁇ traction of the end piece 7.
  • This state of the connector is shown in FIG. 2 and illustrates a connection that is correctly made.
  • the wall of the female part 1 has an orifice 18, for example of rectangular section, opening out at the bore 13.
  • This orifice therefore has an edge 19 which is located as close as possible to the latch 15.
  • the distance "a” separating this edge 19 from the side of the ring 15 which cooperates with the collar 14 to retain the end piece 7 is at least equal to the thickness "b" measured axially, of this collar 14.
  • the orifice 18 is intended to receive an indicator device 20 which comprises a gripping and display part produced in the figures in the form of a disc 21 and a fixing part 22 intended to cooperate with the female part 1 of the connector.
  • This fixing part 22 comprises two rigid tongues 23, 24 whose width "c" is equal to the dimension of the orifice 18 measured axially, these tongues 23 and 24 being separated from each other by a distance such that they bear on the edges of the orifice 18 not shown in FIGS. 1 and 2. These tongues form a foot for embedding the device 20 in the orifice 18.
  • This mounting base may include an upper base forming a stop at its penetration into the orifice 18.
  • this upper base is in fact formed by two curvilinear arms 25 and 26 which partially embrace the outer contour of the female part 1 of the connector.
  • the part 22 for fixing the indicator device 20 comprises a tongue 27 extending in a plane substantially radial to the connector when the device 20 is put in place, this tongue being elastically flexible under the effect of an axially directed effort.
  • the free end of this lan ⁇ guette is shaped into a hooking tooth 28 which, when the base 25, 26 of the device 20 bears on the outer surface of the part 1, slides elastically under the edge 19 of the orifice 18 and forms a retaining member of the device 20 which can no longer be extracted from the orifice in which it is implanted.
  • the projection formed by this tooth 28-1 'inland r of the bore 13 is a dimension "d" in a radial EXCEED “e” between the collar 14 and the bore 13 so that when puts the tip 7 inside the female part 1, the flange 14 abuts on the tooth 28 before the latch 15 engages elastically behind it. When this insertion is continued, the tongue 27 is bent by opposing the penetration of the nozzle 7 a minimum resistant force.
  • the arms 25, 26 play the role of a spring which is crushed between the connector and held by the tongue 27 hooked under the edge 19.
  • This tongue is released, the device is ejected from the orifice 18 by the spring effect of the arms 25 and 26 and can no longer be held there.
  • the tabs 25 and 26 can form an elastic clip retaining the device 20 on the body of the connector even when the latter is no longer attached to this body by the tongue 27 To do this, it is enough that these legs embrace more than half an outer circumference of the female part 2. This arrangement makes it possible to rotate the connector relative to the end piece, the device 20 then being able to be located with the disc 21 in the lower part without it detaching itself unexpectedly from the connector when the connection has been made.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

In a quick-fit union (1-7), the tell-tale indicating the connection status consists of a component (20) housed in an opening (18) in the female part (1) of the union and held therein by an axially flexible tab (27) displaced by a collar (14) of the male part (7) of the union when the latter becomes locked.

Description

Connecteur rapide avec dispositif indicateur, Quick connector with indicating device ,
La présente invention concerne un connecteur rapide comportant une partie mâle et une partie femelle qui s'accou¬ plent par simple introduction de l'une dans l'autre et, plus particulièrement, un connecteur rapide et qui possède des moyens permettant une vérification rapide de la qualité de l'accouplement réalisé.The present invention relates to a quick connector comprising a male part and a female part which are coupled by simple introduction of one into the other and, more particularly, a quick connector and which has means allowing rapid verification of the quality of the coupling performed.
Dans des circuits traversés par des fluides sous pression et qui mettent en oeuvre des connecteurs rapides, il est souhaitable, voire exigé, d'être assuré de la réalisation correcte des connexions. En effet, une connexion mal réalisée est tout d'abord une source de fuite et est un risque de désaccouplement dont la conséquence la plus bénigne est de mettre en panne la machine comportant ces circuits de fluide sous pression et, si cette machine est une automobile, d'être une source d'accident (absence de pression dans les circuits pneumatiques de freinage, fuite de carburant à l'intérieur du compartiment moteur pouvant conduire à un incendie... ).In circuits traversed by pressurized fluids and which use quick connectors, it is desirable, even required, to be assured of the correct realization of the connections. Indeed, a poorly made connection is first of all a source of leakage and is a risk of uncoupling, the most benign consequence of which is to break down the machine comprising these circuits of pressurized fluid and, if this machine is an automobile , to be a source of accident (absence of pressure in the pneumatic braking circuits, fuel leak inside the engine compartment which could lead to a fire ...).
De nombreux constructeurs ont proposé d'associer à ce type de connecteurs rapides un dispositif indicateur de la réalisation correcte de la connexion. Pour illustrer ce type de dispositif connu, on citera le document US-A- 4 946 205 qui décrit un dispositif de confirmation de la réalisation de la connexion d'un connecteur rapide qui est attelé à 1 ' un des éléments de ce connecteur sans qu'on puisse l'en retirer tant que l'autre élément n'est pas correctement mis en place dans celui qui porte ce dispositif. Lorsque cette mise en place est assurée correctement, l'élément mâle logé dans l'élément femelle du connecteur forme une surface de came qui déver rouille la lixation du dispositif indicateur, ce dernier pouvant être alors retiré. Ainsi, grâce à une vérification rapide visuelle de la présence ou de l 'absence de ce disposi til indicateur sur un connecteur rapide, on peut être assure de la qualité de la réalisation de la connexion. Ce disposi tif comporte cependant de nombreux inconvénients essentielle ment dû à -sa complexité et à sa forme, demandant une préci sion d'exécution importante et un assemblage également précis avec l'élément femelle du connecteur pour pouvoir correcte¬ ment fonctionner.Many manufacturers have proposed associating with this type of quick connector a device indicating the correct completion of the connection. To illustrate this type of known device, reference will be made to document US-A-4,946,205 which describes a device for confirming the completion of the connection of a quick connector which is coupled to one of the elements of this connector without 'it can be removed as long as the other element is not correctly positioned in the one carrying this device. When this positioning is ensured correctly, the male element housed in the female element of the connector forms a cam surface which releases rust from the attachment of the indicating device, the latter being then able to be removed. Thus, thanks to a quick visual check of the presence or absence of this indicator device on a quick connector, one can be assured of the quality of the connection. This device does, however, have many drawbacks essentially due to its complexity and its shape, requiring precision. important execution sion and also precise assembly with the female element of the connector to be able to function properly.
Un autre dispositif de ce genre est illustré par le document USA 5 152 555 qui décrit une sorte de fourchette dont les branches, logées dans des rainures du corps de l'élément femelle du connecteur, font saillie à l'intérieur de l'alésage de cet élément femelle pour être situées sur le trajet d'une collerette de l'élément mâle. Ces branches possèdent un crochet intérieur qui interdit de retirer le dispositif tant que la collerette de l'élément mâle n'est pas située à leur niveau où il joue le rôle d'une came les écartant pour libérer les crochets. Comme la position de la collerette par rapport à l'élément femelle, lorsque celle-ci est au niveau des branches de la fourchette, correspond à une réalisation correcte de l'accouplement, le fait de pouvoir retirer le dispositif indicateur est le gage de la qualité de la connexion réalisée. L'un des inconvénients de ces disposi¬ tifs découle de sa structure même. En effet, la fourchette doit être suffisamment raide pour que ses branches ne puissent pas être écartées facilement l'une de l'autre par une simple manipulation de rotation autour de l'axe du coupleur, faisant jouer à la paroi de l'élément femelle de ce coupleur un rôle de came écartant les branches. Dans ce cas alors, le dispositif oppose une résistance importante à l'introduction de l'élément mâle du coupleur dans l'élément femelle qui peut tromper l'installateur croyant être parvenu à une position de connexion correcte. Ceci est d'autant plus vrai que l'épaisseur des branches du dispositif indicateur est relativement faible afin que sa mise en place ne vienne pas ajouter à la longueur du coupleur, ce qui impose d'avoir des surfaces de glissement de la collerette de l'élément mâle sur les branches de l'indicateur faiblement inclinées par rapport au plan radial alors que pour adoucir l'effort de pénétration il conviendrait de disposer de surface de glissement fortement inclinées, ce qui imposerait une épais¬ seur du dispositif beaucoup plus importante. Le compromis réalisé dans la pratique est tel que la clé de confirmation de la connexion peut être extraite de son logement par simple manipulation, ce qui est un inconvénient.Another device of this kind is illustrated by document USA 5,152,555 which describes a kind of fork, the branches of which, housed in grooves in the body of the female element of the connector, protrude inside the bore of this female element to be located on the path of a collar of the male element. These branches have an internal hook which prohibits removing the device as long as the collar of the male element is not located at their level where it plays the role of a cam moving them apart to release the hooks. As the position of the collar relative to the female element, when the latter is at the branches of the fork, corresponds to a correct embodiment of the coupling, the fact of being able to remove the indicating device is the guarantee of the quality of the connection made. One of the drawbacks of these devices arises from its very structure. Indeed, the fork must be stiff enough so that its branches cannot be easily spaced from one another by a simple manipulation of rotation around the axis of the coupler, making the wall of the female element play of this coupler a role of cam spreading the branches. In this case then, the device offers significant resistance to the introduction of the male element of the coupler into the female element which can deceive the installer believing that he has reached a correct connection position. This is all the more true as the thickness of the branches of the indicating device is relatively small so that its installation does not add to the length of the coupler, which requires having sliding surfaces of the collar of the male element on the branches of the indicator slightly inclined with respect to the radial plane whereas to soften the penetration effort it would be advisable to have a surface of strongly inclined sliding, which would impose a much greater thickness of the device. The compromise achieved in practice is such that the connection confirmation key can be extracted from its housing by simple manipulation, which is a drawback.
La présente invention a pour but de proposer un connecteur rapide avec un témoin de la qualité de la connexion qui soit de fabrication simple et bon marché et dont la présence ne soit pas pénalisante pour une bonne réalisation de la connexion.The object of the present invention is to propose a quick connector with a witness to the quality of the connection which is simple and inexpensive to manufacture and the presence of which is not detrimental for a good connection to be made.
A cet effet, l'invention a donc pour objet un connecteur rapide comportant un dispositif indicateur avec une partie de visualisation faisant saillie à l'extérieur du connecteur et une partie de fixation verrouillée par encli- quetage sur la pièce femelle du connecteur, cette partie de fixation comprenant au moins un élément de commande de son déverrouillage coopérant avec une surface d'actionnement portée par la pièce mâle du connecteur lorsque celle-ci est correctement mise en place dans la pièce femelle qui compor- te, de manière connue en elle-même, un alésage étage dont la section de plus grand diamètre peu accueillir avec jeu radial une collerette extérieure de la pièce mâle du connecteur au- delà d'un verrou, la paroi de la pièce femelle du connecteur possédant au niveau de la section de plus grand diamètre de l'alésage un orifice d'implantation de la partie de fixation du dispositif indicateur dont le bord voisin du verrou est séparé de ce dernier d'une distance au moins égale à l'épais¬ seur de la collerette mesurée axialement tandis que la partie de fixation comporte une languette d'accrochage flexible dans la direction axiale du connecteur dont l'extrémité fait saillie dans la section de l'alésage sur une hauteur supé¬ rieure au jeu radial lorsqu'elle est introduite dans l'ori¬ fice et est disposée sous le bord susdit.To this end, the subject of the invention is therefore a quick connector comprising an indicator device with a display part projecting outside the connector and a fixing part locked by snapping onto the female part of the connector, this part fixing comprising at least one control element for its unlocking cooperating with an actuating surface carried by the male part of the connector when the latter is correctly placed in the female part which comprises, in a manner known in itself- same, a stage bore whose section of larger diameter can accommodate with radial clearance an external flange of the male part of the connector beyond a latch, the wall of the female part of the connector having at the level of the section more large diameter of the bore, an orifice for installing the fixing part of the indicating device, the edge of the bolt adjacent to it being separated from the latter by a e distance at least equal to the thickness of the flange measured axially while the fixing part comprises a flexible latching tongue in the axial direction of the connector, the end of which projects into the section of the bore on a height greater than the radial clearance when it is introduced into the ori¬ fice and is arranged under the above-mentioned edge.
Le coupleur ainsi défini est très peu modifié par rapport à un coupleur normal. En effet, il ne comporte qu'un orifice pour l'implantation du dispositif indicateur et le moyen d'accrochage de ce dispositif n'offre qu'une très faible résistance à la pénétration de la pièce mâle du coupleur dans la pièce femelle. Dans un mode préféré de réalisation de l'invention, l'orifice est de section non circulaire et la partie de fixation du dispositif de visualisation comporte un pied pour son encastrement dans cet orifice de section correspondante. Ainsi le seul mouvement possible du dispositif indicateur par rapport au connecteur est un mouvement parallèle à l'axe de l'orifice, c'est-à-dire d'introduction ou d'extraction. Lorsque la languette d'accrochage est en service, le mouve¬ ment d'extraction n'est pas possible même si la languette est très flexible, ce qui est recherché pour opposer un effort minimum à l'accouplement des pièces mâles et femelles du connecteur, cette languette étant par ailleurs très résis¬ tance en traction lorsque s'oppose à l'extraction du disposi¬ tif indicateur. De manière préférée, le pied est constitué par deux pattes encadrant la languette flexible. Enfin, ce connecteur est tel que la partie de fixation du dispositif indicateur comporte de part et d'autre de la languette des branches curvilignes formant un étrier d'appui de dispositif sur la surface extérieur de l'élément femelle. Dans une variante de ce mode de réalisation, cet étrier peut constituer un clip qui constitue un moyen supplémentaire de maintien du dispositif indicateur sur le connecteur même lorsque la connexion est parfaitement réalisée, l'effort développé par ces deux branches élastiques formant clip à l'extérieur du connecteur étant très faible. De cette manière, un vérificateur pourrait s'assurer de la bonne réalisation de la connexion en retirant le dispositif indicateur et, afin de ne pas le perdre, le remettre en place, soit dans la même orientation soit dans une orienta¬ tion différente pour montrer que la vérification a été réalisée. Dans une autre variante, cet étrier peut comporter des branches curvilignes dont le rayon est inférieur à celui extérieur du corps du connecteur. Dans ce cas les branches font ressort et lorsque la languette est décrochée, le dispositif indicateur est éjecté sous l'effet élastique de ces branches qui ont été contraintes par la languette accrochée d'épouser le diamètre extérieur du corps du connecteur. La connexion réalisée il n'est alors plus possible d'implanter le dispositif indicateur. D'autres caractéristiques et avantages de l'inven¬ tion ressortiront de la description, donnée ci-après à titre d'exemple, d'un mode de sa réalisation.The coupler thus defined is very little modified compared to a normal coupler. Indeed, it only has one orifice for the installation of the indicating device and the attachment means of this device offers only a very low resistance to the penetration of the male part of the coupler into the female part. In a preferred embodiment of the invention, the orifice is of non-circular section and the fixing part of the display device includes a foot for its embedding in this orifice of corresponding section. Thus, the only possible movement of the indicating device with respect to the connector is a movement parallel to the axis of the orifice, that is to say of introduction or extraction. When the catching tongue is in use, the extraction movement is not possible even if the tongue is very flexible, which is sought to oppose a minimum force to the coupling of the male and female parts of the connector , this tongue also being very tensile strength when opposed to the extraction of the indicator device. Preferably, the foot is constituted by two legs framing the flexible tongue. Finally, this connector is such that the fixing part of the indicating device comprises on either side of the tongue curvilinear branches forming a stirrup for supporting the device on the external surface of the female element. In a variant of this embodiment, this stirrup can constitute a clip which constitutes an additional means of holding the indicating device on the connector even when the connection is perfectly made, the effort developed by these two elastic branches forming a clip at the outside of the connector being very weak. In this way, a verifier could ensure that the connection is made correctly by removing the indicating device and, in order not to lose it, replace it, either in the same orientation or in a different orientation to show that the verification has been carried out. In another variant, this stirrup may include curvilinear branches whose radius is less than that outside of the body of the connector. In this case the branches stand out and when the tongue is off, the indicating device is ejected under the elastic effect of these branches which have been forced by the hooked tongue to match the outside diameter of the body of the connector. Once the connection has been made, it is no longer possible to install the indicating device. Other characteristics and advantages of the invention will emerge from the description, given below by way of example, of an embodiment.
Il sera fait référence aux dessins annexés parmi lesquels - la figure 1 est une vue en coupe axiale d'un connecteur conforme à l'invention dans un état où la connexion n'est pas parfaitement réalisée,Reference will be made to the accompanying drawings, in which - FIG. 1 is an axial section view of a connector according to the invention in a state where the connection is not perfectly made,
- la figure 2 est une vue en coupe identique à celle de la figure 1 illustrant une connexion correctement réalisée,FIG. 2 is a sectional view identical to that of FIG. 1 illustrating a correctly made connection,
- la figure 3 est une vue extérieure suivant F de la figure 1 du dispositif indicateur seul,FIG. 3 is an external view along F of FIG. 1 of the indicator device alone,
- la figure 4 est une vue en coupe selon la ligne IV-IV de la figure 3. Un connecteur selon 1 ' invention comporte une pièce femelle 1 divisée en plusieurs sections. Une première section 2 possède un canal intérieur 3 et des moyens extérieurs 4, dits en dent de sapin, pour être introduite à l'intérieur d'un tube non représenté. La deuxième section 5 de cette pièce 1 comporte un alésage 6 de diamètre déterminé pour accueillir le nez d'un embout 7 formant la pièce mâle du connecteur.- Figure 4 is a sectional view along line IV-IV of Figure 3. A connector 1 according to the invention comprises a female part 1 divided into several sections. A first section 2 has an internal channel 3 and external means 4, called fir tree tooth, to be introduced inside a tube not shown. The second section 5 of this part 1 has a bore 6 of determined diameter to accommodate the nose of a tip 7 forming the male part of the connector.
La troisième section 8 de cette pièce mâle comporte un alésage 9 de diamètre plus important que l'alésage 6 pour accueillir deux joints toriques 10 et un insert de blocage de ceux-ci 11. Le diamètre intérieur de 1 'insert est égal au diamètre de l'alésage 6. Enfin la pièce femelle 1 comporte une troisième section 12 dont le diamètre intérieur 13 est encore plus important que celui des alésages précédents pour pouvoir permettre le passage libre avec un jeu radial "e" d'une collerette 14 portée par l'embout 7. A son extrémité ouverte sur l'extérieur, la dernière section 12 de la pièce femelle 1 comporte un verrou 15 pour empêcher l'extraction de l'embout 7 lorsqu'il est introduit correctement dans la pièce femelle 1. Ce verrou 15 est constitué par une bague qui peut coulisser radialement dans la pièce femelle 1 dans un logement ouvert, réalisé dans celle-ci et qui comporte une ou deux pattes élastiques extérieures 16 qui tendent à désaxer l'alésage intérieur de la bague 15 par rapport à l'alésage 13. Une partie de cet alésage intérieur de la bague 15 est en forme de surface conique 17 de sorte qu'au passage de la collerette 14, la bague 15 est abaissée à 1"encontre de l'effet des lames élastiques 16 jusqu'à ce que la collerette 14 soit logée dans l'alésage 13 au-delà de cette bague 15. Les languettes 16 sont alors décomprimées et la bague se retrouve en position libre désaxé par rapport à l'alésage 13 et l'un de ces flancs prend contact avec le flanc arrière de la collerette 14 et constitue une butée sOpposant à l'ex¬ traction de 1'embout 7. Cet état du connecteur est représenté à la figure 2 et illustre une connexion correctement réali¬ sée.The third section 8 of this male part has a bore 9 of larger diameter than the bore 6 to accommodate two O-rings 10 and a blocking insert these 11. The internal diameter of one insert is equal to the diameter of the bore 6. Finally the female part 1 has a third section 12 whose internal diameter 13 is even larger than that of the preceding bores in order to allow the free passage with a radial clearance "e" of a flange 14 carried by the end piece 7. At its end open to the outside, the last section 12 of the female part 1 comprises a latch 15 to prevent the extraction of the end piece 7 when it is correctly inserted into the female part 1. This lock 15 is constituted by a ring which can slide radially in the female part 1 in an open housing, produced in the latter and which comprises one or two elastic tabs outer 16 which tend to offset the inner bore of the ring 15 relative to the bore 13. A portion of this inner bore of the ring 15 is in the form of a conical surface 17 so that the passage of the flange 1 4, the ring 15 is lowered to 1 "against the effect of the elastic blades 16 until the flange 14 is housed in the bore 13 beyond this ring 15. The tongues 16 are then decompressed and the ring is found in a free offset position relative to the bore 13 and one of these flanks makes contact with the rear flank of the flange 14 and constitutes a stop sOpposant to the ex¬ traction of the end piece 7. This state of the connector is shown in FIG. 2 and illustrates a connection that is correctly made.
Conformément à l'invention, la paroi de la pièce femelle 1 comporte un orifice 18 par exemple de section rectangulaire, débouchant au niveau de l'alésage 13. Cet orifice possède donc un bord 19 qui est situé au plus près du verrou 15. La distance "a" séparant ce bord 19 du flanc de la bague 15 qui coopère avec la collerette 14 pour retenir l'embout 7 est au moins égale à l'épaisseur "b" mesurée axialement, de cette collerette 14. L'orifice 18 est destiné à recevoir un dispositif indicateur 20 qui comporte une partie de préhension et de visualisation réalisée aux figures sous la forme d'un disque 21 et une partie de fixation 22 destinée à coopérer avec la pièce femelle 1 du connecteur. Cette partie de fixation 22 comporte deux languet- tes 23, 24 rigides dont la largeur "c" est égale à la dimension de l'orifice 18 mesuré axialement, ces languettes 23 et 24 étant séparées l'une de l'autre d'une distance telle qu'elles prennent appui sur les bords de l'orifice 18 non représentés aux figures 1 et 2. Ces languettes forment un pied d'encastrement du dispositif 20 dans l'orifice 18.According to the invention, the wall of the female part 1 has an orifice 18, for example of rectangular section, opening out at the bore 13. This orifice therefore has an edge 19 which is located as close as possible to the latch 15. The distance "a" separating this edge 19 from the side of the ring 15 which cooperates with the collar 14 to retain the end piece 7 is at least equal to the thickness "b" measured axially, of this collar 14. The orifice 18 is intended to receive an indicator device 20 which comprises a gripping and display part produced in the figures in the form of a disc 21 and a fixing part 22 intended to cooperate with the female part 1 of the connector. This fixing part 22 comprises two rigid tongues 23, 24 whose width "c" is equal to the dimension of the orifice 18 measured axially, these tongues 23 and 24 being separated from each other by a distance such that they bear on the edges of the orifice 18 not shown in FIGS. 1 and 2. These tongues form a foot for embedding the device 20 in the orifice 18.
Ce pied d'encastrement peut comporter une embase supérieure formant butée à sa pénétration dans l'orifice 18. Dans le mode de réalisation représenté aux figures, cette embase supérieure est en fait formée par deux bras curvili- gnes 25 et 26 qui viennent partiellement embrasser le contour extérieur de la pièce femelle 1 du connecteur.This mounting base may include an upper base forming a stop at its penetration into the orifice 18. In the embodiment shown in the figures, this upper base is in fact formed by two curvilinear arms 25 and 26 which partially embrace the outer contour of the female part 1 of the connector.
Entre les pattes d'encastrement 23, 24, la partie 22 de fixation du dispositif indicateur 20 comporte une languette 27 s'étendant dans un plan sensiblement radial au connecteur lorsque le dispositif 20 est mis en place, cette languette étant flexible élastiquement sous l'effet d'un effort dirigé axialement. L'extrémité libre de cette lan¬ guette est conformée en une dent d'accrochage 28 qui, lorsque l'embase 25, 26 du dispositif 20 prend appui sur la surface extérieure de la pièce 1, se glisse élastiquement sous le bord 19 de l'orifice 18 et forme un organe de retenue du dispositif 20 qui ne peut plus être extrait de l'orifice dans lequel il est implanté. La saillie que forme cette dent 28 à 1 'intérieur de l'alésage 13 est d'une dimension "d" supé- rieure au a radial "e" existant entre la collerette 14 et l'alésage 13 de sorte que lorsqu'on enfile l'embout 7 à l'intérieur de la pièce femelle 1, la collerette 14 vient buter sur la dent 28 avant que le verrou 15 ne s'engage élastiquement derrière elle. Lorsque l'on poursuit cet enfoncement, la languette 27 est fléchie en opposant à la pénétration de l'embout 7 un effort résistant minimum.Between the mounting lugs 23, 24, the part 22 for fixing the indicator device 20 comprises a tongue 27 extending in a plane substantially radial to the connector when the device 20 is put in place, this tongue being elastically flexible under the effect of an axially directed effort. The free end of this lan¬ guette is shaped into a hooking tooth 28 which, when the base 25, 26 of the device 20 bears on the outer surface of the part 1, slides elastically under the edge 19 of the orifice 18 and forms a retaining member of the device 20 which can no longer be extracted from the orifice in which it is implanted. The projection formed by this tooth 28-1 'inland r of the bore 13 is a dimension "d" in a radial EXCEED "e" between the collar 14 and the bore 13 so that when puts the tip 7 inside the female part 1, the flange 14 abuts on the tooth 28 before the latch 15 engages elastically behind it. When this insertion is continued, the tongue 27 is bent by opposing the penetration of the nozzle 7 a minimum resistant force.
Après le passage de la collerette 14 au-delà de la bague 15, celle-ci à sous l'effet du rappel élastique des pattes 16 prend sa position illustrée par la figure 2 de verrouillage de la connexion. Comme la distance "a" est au moins égale à l'épaisseur "b" de la collerette 14, la dent 28 est placée au-delà du bord 19 de l'orifice 18 ce qui libère le dispositif 20 qui peut-être extrait de cet orifice, après que, de manière certaine, la bague 15 a atteint sa position de verrouillage. En effet, si "a" = "b" le verrouillage de l'embout sera simultané à la libération du dispositif 20. Si "a" est supérieur à "b" il faudra enfoncer l'embout au-delà de sa position de verrouillage dans le connecteur pour libérer le dispositif 20 ce qui est une garantie supplémen- taire.After the flange 14 has passed beyond the ring 15, the latter under the effect of the elastic return of the lugs 16 takes its position illustrated in FIG. 2 for locking the connection. As the distance "a" is at least equal to the thickness "b" of the flange 14, the tooth 28 is placed beyond the edge 19 of the orifice 18 which frees the device 20 which can be extracted from this orifice, after, certainly, the ring 15 has reached its locking position. Indeed, if "a" = "b" the locking of the nozzle will be simultaneous with the release of the device 20. If "a" is greater than "b" it will be necessary to push the nozzle beyond its locking position in the connector to release the device 20 which is an additional guarantee.
On peut prévoir que le rayon des bras curvilignes soit égal ou supérieur à celui extérieur de la pièce femelle 1 du connecteur ou que, de manière préférée, ce rayon, à l'état libre, soit inférieur à celui de cette pièce. Dans ce dernier cas, les bras 25, 26 jouent le rôle d'un ressort qui est écrasé entre le connecteur et maintenu par la languette 27 accrochée sous le bord 19. Lorsque cette languette est dégagée, le dispositif est éjecté hors de l'orifice 18 par l'effet ressort des bras 25 et 26 et ne peut plus s'y maintenir. Cette disposition avec "a" supérieur à "b", forme pour l'opérateur un système à "double clic" pour témoigner de la bonne réalisation de la connexion.Provision may be made for the radius of the curvilinear arms to be equal to or greater than that outside of the female part 1 of the connector, or for this radius, in the free state, to be less than that of this part. In the latter case, the arms 25, 26 play the role of a spring which is crushed between the connector and held by the tongue 27 hooked under the edge 19. When this tongue is released, the device is ejected from the orifice 18 by the spring effect of the arms 25 and 26 and can no longer be held there. This arrangement with "a" greater than "b", forms for the operator a "double click" system to testify to the successful completion of the connection.
Ainsi l'absence de dispositif indicateur sur un connecteur en service où sa présence sans encliquetage est le témoin de la réalisation correcte de la connexion.Thus the absence of an indicating device on a connector in service where its presence without snap-fastness is the witness of the correct realization of the connection.
Dans une variante de la réalisation de l'invention, les pattes 25 et 26 peuvent former un clip élastique de retenue du dispositif 20 sur le corps du connecteur même quand celui-ci n'est plus accroché à ce corps par la lan- guette 27. Pour ce faire, il suffit que ces pattes embrassent plus d'une demi-circonférence extérieure de la pièce femelle 2. Cette disposition permet de tourner le connecteur par rapport à l'embout, le dispositif 20 pouvant alors se trouver avec le disque 21 en partie inférieure sans pour cela qu'il se détache inopinément du connecteur lorsque la connexion a été réalisée. In a variant of the embodiment of the invention, the tabs 25 and 26 can form an elastic clip retaining the device 20 on the body of the connector even when the latter is no longer attached to this body by the tongue 27 To do this, it is enough that these legs embrace more than half an outer circumference of the female part 2. This arrangement makes it possible to rotate the connector relative to the end piece, the device 20 then being able to be located with the disc 21 in the lower part without it detaching itself unexpectedly from the connector when the connection has been made.

Claims

REVENDICATIONS
1. Connecteur rapide comportant un dispositif (20) indicateur avec, une partie de visualisation (21) faisant saillie à l'extérieur du connecteur et une partie (22) de fixation verrouillée par encliquetage sur la pièce (1) femelle du connecteur, cette partie (22) de fixation compre¬ nant au moins un élément de commande de son verrouillage coopérant avec une surface d'actionnement portée par la pièce mâle (7) du connecteur lorsque celle-ci est correctement remise en place dans la pièce (1) femelle, caractérisé en ce que la pièce femelle (1) du connecteur comporte de manière connue en elle-même, un alésage étage dont la section (13) de plus grand diamètre peut accueillir avec jeu radial "e" une collerette (14) extérieure de la pièce mâle (7) du connecteur au-delà d'un verrou (15), en ce que la paroi de la pièce femelle (1) du connecteur possède, au niveau de la section (13) de plus grand diamètre de l'alésage, un orifice (18) d'implantation de la partie (22) de fixation du dispositif indicateur (20) dont le bord (19) voisin du verrou (15) est séparé de ce dernier d'une distance "a" au moins égale à l'épaisseur "b" de la collerette (14) mesurée axialement et en ce que la partie (22) de fixation comporte une languette d'accrochage (27) flexible dans la direction axiale du connecteur dont l'extrémité (28) fait saillie dans la section de l'alésage sur une hauteur "d" supérieure au jeu radial "e" lorsqu'elle est introduite dans l'orifice (18) et possède une dent d'accrochage disposée sous le bord (19) sus-dit.1. Quick connector comprising an indicator device (20) with, a display part (21) projecting outside the connector and a fixing part (22) locked by snap-fastening on the female part (1) of the connector, this fixing part (22) comprising at least one element for controlling its locking cooperating with an actuating surface carried by the male part (7) of the connector when the latter is correctly replaced in the part (1) female, characterized in that the female part (1) of the connector comprises, in a manner known per se, a stage bore whose section (13) of larger diameter can accommodate with radial clearance "e" an external flange (14) of the male part (7) of the connector beyond a latch (15), in that the wall of the female part (1) of the connector has, at the level of the section (13) of larger diameter of l bore, an orifice (18) for implanting the part (22) of fixing of the indicating device (20) whose edge (19) near the latch (15) is separated from the latter by a distance "a" at least equal to the thickness "b" of the flange (14) measured axially and in that the fixing part (22) comprises a hooking tongue (27) flexible in the axial direction of the connector, the end (28) of which projects in the section of the bore at a height "d" greater than the radial clearance "e" when it is introduced into the orifice (18) and has a hooking tooth disposed under the above-mentioned edge (19).
2. Connecteur selon la revendication 1 caractérisé en ce que l'orifice (18) de section non circulaire, la partie (22) de fixation du dispositif indicateur (20) comportant un pied (23 - 24) pour son encastrement dans cet orifice (18), de section correspondante.2. Connector according to claim 1 characterized in that the orifice (18) of non-circular section, the part (22) for fixing the indicator device (20) comprising a foot (23 - 24) for its embedding in this orifice ( 18), of corresponding section.
3. Connecteur selon la revendication 2 caractérisé en ce que le pied est constitué par deux pattes (23 - 24) encadrant la languette flexible (27). 3. Connector according to claim 2 characterized in that the foot is constituted by two legs (23 - 24) framing the flexible tongue (27).
4. Connecteur selon l'une des revendications précédentes caractérisé en ce que le dispositif indicateur (20) comporte au sommet de sa partie de fixation une embase d'appui du dispositif sur la surface extérieure de l'élément femelle (1).4. Connector according to one of the preceding claims, characterized in that the indicator device (20) comprises at the top of its fixing part a base for supporting the device on the external surface of the female element (1).
5. Connecteur selon la revendication 4 caractérisé en ce que cette embase est constituée par des branches curvilignes (25, 26) s'étendant de part et d'autre de la partie de fixation (22). 5. Connector according to claim 4 characterized in that this base is constituted by curvilinear branches (25, 26) extending on either side of the fixing part (22).
6. Connecteur selon la revendication 5, caractérisé en ce que les bords (25, 26) curvilignes sont d'une longueur inférieure à la demi-circonférence extérieure de la pièce femelle (1) du connecteur et de rayon de courbure, au repos, plus faible que celui extérieur correspondant de la pièce femelle (1).6. Connector according to claim 5, characterized in that the curvilinear edges (25, 26) are of a length less than the outer half-circumference of the female part (1) of the connector and of radius of curvature, at rest, lower than the corresponding external one of the female part (1).
7. Connecteur selon la revendication 5 caractérisé en ce que les branches curvilignes sont d'une longueur suffisante pour embrasser plus de la moitié de la circonfé¬ rence de la pièce femelle (1) du connecteur. 7. A connector according to claim 5 characterized in that the curvilinear branches are of sufficient length to embrace more than half of the circumference of the female part (1) of the connector.
PCT/FR1994/000559 1993-05-14 1994-05-11 Quick-fit union with tell-tale WO1994027077A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP6525065A JPH07508090A (en) 1993-05-14 1994-05-11 Fast acting connector with indicating device
EP94916269A EP0650570A1 (en) 1993-05-14 1994-05-11 Quick-fit union with tell-tale
SK1589-94A SK158994A3 (en) 1993-05-14 1994-05-11 Quick-fit union connector with indicator of connection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR93/05843 1993-05-14
FR9305843A FR2705431B1 (en) 1993-05-14 1993-05-14 Quick connector with indicating device.

Publications (1)

Publication Number Publication Date
WO1994027077A1 true WO1994027077A1 (en) 1994-11-24

Family

ID=9447144

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1994/000559 WO1994027077A1 (en) 1993-05-14 1994-05-11 Quick-fit union with tell-tale

Country Status (6)

Country Link
EP (1) EP0650570A1 (en)
JP (1) JPH07508090A (en)
CZ (1) CZ5995A3 (en)
FR (1) FR2705431B1 (en)
SK (1) SK158994A3 (en)
WO (1) WO1994027077A1 (en)

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EP0740100A1 (en) * 1995-04-29 1996-10-30 ARMATURENFABRIK HERMANN VOSS GMBH & CO. Plug connector for high pressure fluid lines
US5779278A (en) * 1995-12-27 1998-07-14 Itt Automotive, Inc. Pop off insertion indicator for metal quick connectors
EP0942495A1 (en) * 1998-03-13 1999-09-15 Framatome Connectors International Connector with automatic insertion and ejection
US6082779A (en) * 1997-03-01 2000-07-04 A. Raymond & Cie Releasable plug connector with mounting display
US6722703B2 (en) * 2002-02-28 2004-04-20 Tokai Rubber Industries, Ltd. Quick connector with function of verifying complete connection
EP1959182A1 (en) * 2005-12-06 2008-08-20 Tokai Rubber Industries, Ltd. Quick connector and checker
EP2567136A2 (en) * 2010-05-04 2013-03-13 Norma U.S. Holding LLC Quick connector assembly
US8720952B2 (en) 2008-09-30 2014-05-13 Tokai Rubber Industries, Ltd. Connector
US20150084329A1 (en) * 2012-04-18 2015-03-26 Avk Holding A/S Threadless pipe coupling
WO2019036233A1 (en) * 2017-08-14 2019-02-21 Oetiker Ny, Inc. Quick connect with indicator tab
US20220010904A1 (en) * 2018-11-21 2022-01-13 Fränkische Industrial Pipes GmbH & Co. KG Coupling
US11920716B2 (en) 2018-11-28 2024-03-05 Fränkische Industrial Pipes GmbH & Co. KG Fluid connector

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FR2727492B1 (en) * 1994-11-30 1996-12-27 Legris Sa DEVICE FOR QUICK CONNECTION OF A TUBE TO A RIGID TIP
US5863077A (en) * 1996-12-20 1999-01-26 Itt Automotive, Inc. Quick connector with snap-on frangible retainer
FR2818731B1 (en) 2000-12-22 2006-11-03 Legris Sa FAST COUPLER WITH CONNECTION LAMP
FR2827364B1 (en) * 2001-07-12 2007-04-20 Legris Sa QUICK CONNECTOR
FR2844860B1 (en) * 2002-09-20 2006-12-15 Legris Sa FAST CONNECTOR WITH INCREASED SAFETY
FR2908494B1 (en) 2006-11-15 2008-12-26 Legris Sa QUICK CONNECTOR
FR2919373B1 (en) * 2007-07-25 2009-09-18 Legris Sa RAPID CONNECTION PERFECTED.

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0740100A1 (en) * 1995-04-29 1996-10-30 ARMATURENFABRIK HERMANN VOSS GMBH & CO. Plug connector for high pressure fluid lines
US5779278A (en) * 1995-12-27 1998-07-14 Itt Automotive, Inc. Pop off insertion indicator for metal quick connectors
US6082779A (en) * 1997-03-01 2000-07-04 A. Raymond & Cie Releasable plug connector with mounting display
EP0942495A1 (en) * 1998-03-13 1999-09-15 Framatome Connectors International Connector with automatic insertion and ejection
FR2776035A1 (en) * 1998-03-13 1999-09-17 Framatome Connectors France CONNECTOR WITH AUTOMATIC INSERTION AND EJECTION
US6089897A (en) * 1998-03-13 2000-07-18 Framatome Connectors International Connector with automatic insertion and ejection
US6722703B2 (en) * 2002-02-28 2004-04-20 Tokai Rubber Industries, Ltd. Quick connector with function of verifying complete connection
EP1959182A1 (en) * 2005-12-06 2008-08-20 Tokai Rubber Industries, Ltd. Quick connector and checker
US9016729B2 (en) 2005-12-06 2015-04-28 Sumitomo Riko Company Limited Quick connector and checker
EP1959182A4 (en) * 2005-12-06 2014-03-12 Tokai Rubber Ind Ltd Quick connector and checker
US8720952B2 (en) 2008-09-30 2014-05-13 Tokai Rubber Industries, Ltd. Connector
EP2567136A4 (en) * 2010-05-04 2014-05-21 Norma Us Holding Llc Quick connector assembly
EP2567136A2 (en) * 2010-05-04 2013-03-13 Norma U.S. Holding LLC Quick connector assembly
US20150084329A1 (en) * 2012-04-18 2015-03-26 Avk Holding A/S Threadless pipe coupling
US9683688B2 (en) * 2012-04-18 2017-06-20 Avk Holding A/S Threadless pipe coupling
WO2019036233A1 (en) * 2017-08-14 2019-02-21 Oetiker Ny, Inc. Quick connect with indicator tab
RU2739511C1 (en) * 2017-08-14 2020-12-25 Отикер Нй, Инк. Quick-detachable connection with indicator ledge
EP3786506A1 (en) * 2017-08-14 2021-03-03 Oetiker NY, Inc. Quick connect with indicator tab
US11262010B2 (en) 2017-08-14 2022-03-01 Oetiker Ny, Inc. Quick connect with indicator tab
US20220010904A1 (en) * 2018-11-21 2022-01-13 Fränkische Industrial Pipes GmbH & Co. KG Coupling
US11920713B2 (en) * 2018-11-21 2024-03-05 Fränkische Industrial Pipes GmbH & Co. KG Coupling
US11920716B2 (en) 2018-11-28 2024-03-05 Fränkische Industrial Pipes GmbH & Co. KG Fluid connector

Also Published As

Publication number Publication date
FR2705431B1 (en) 1995-07-13
EP0650570A1 (en) 1995-05-03
CZ5995A3 (en) 1995-11-15
FR2705431A1 (en) 1994-11-25
SK158994A3 (en) 1995-07-11
JPH07508090A (en) 1995-09-07

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