FR2925649A3 - Duct i.e. fuel duct, connecting device i.e. connector, for case i.e. fuel injector of motor vehicle, has fastener cooperated with peripheral groove of male nozzle for blocking device on case, and push element unlocking fastener - Google Patents

Duct i.e. fuel duct, connecting device i.e. connector, for case i.e. fuel injector of motor vehicle, has fastener cooperated with peripheral groove of male nozzle for blocking device on case, and push element unlocking fastener Download PDF

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Publication number
FR2925649A3
FR2925649A3 FR0760011A FR0760011A FR2925649A3 FR 2925649 A3 FR2925649 A3 FR 2925649A3 FR 0760011 A FR0760011 A FR 0760011A FR 0760011 A FR0760011 A FR 0760011A FR 2925649 A3 FR2925649 A3 FR 2925649A3
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FR
France
Prior art keywords
case
fastener
duct
connector
groove
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
FR0760011A
Other languages
French (fr)
Inventor
Gregory Sanchez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to FR0760011A priority Critical patent/FR2925649A3/en
Publication of FR2925649A3 publication Critical patent/FR2925649A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • 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
    • F16L37/088—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 split elastic ring
    • F16L37/0885—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 split elastic ring with access to the split elastic ring from a radial or tangential opening in the coupling
    • 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
    • F16L37/0982—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 with a separate member for releasing the coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8015—Provisions for assembly of fuel injection apparatus in a certain orientation, e.g. markings, notches or specially shaped sleeves other than a clip
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8023—Fuel injection apparatus manufacture, repair or assembly the assembly involving use of quick-acting mechanisms, e.g. clips

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

The device i.e. connector (1), has an element (5) with a cylindrical main body (3) and a part extended along an axis of the body to form a male nozzle (6) that is introduced in a boring of a case i.e. fuel injector. A fastener is cooperated with a peripheral groove (10) of the male nozzle for blocking the device on the case. A push element (20) unlocks the fastener by deformation. A spring is placed between a linking portion (21) of the male nozzle and the body.

Description

Raccord encliquetable notamment pour conduites de carburant La présente invention concerne un raccord encliquetable pour conduites et notamment pour conduites de carburant d'un moteur à combustion interne. L'invention concerne plus précisément les raccords encliquetables utilisés pour le raccordement d'un boîtier tel qu'un injecteur de carburant à un circuit de carburant. Ce type de raccords comportent généralement un embout mâle qui s'enfiche dans un alésage ménagé dans le boîtier en réalisant une liaison étanche par un joint porté par l'embout mâle par exemple, et qui est maintenu en position dans l'alésage par un moyen de blocage élastiquement déformable supporté par le boîtier comme par exemple une agrafe de fixation. De tels raccords sont par exemple décrits dans les documents FR2797916 ou EP0886065. Cependant le démontage de ces raccords est souvent difficile car l'agrafe doit être écartée avec un outil et risque d'être déformée ne pouvant plus assurer à nouveau le maintien de l'embout. De plus, lors du démontage, l'agrafe peut être délogée du boîtier et peut tomber dans le compartiment moteur nécessitant alors son remplacement. Le document FR2771472 propose un raccord encliquetable comportant des pattes de fixation élastiques permettant d'assembler le raccord sur le boîtier en clippant les pattes sur la paroi extérieure du boîtier afin de ne plus utiliser d'agrafe. The present invention relates to a snap fitting for pipes and in particular for fuel lines of an internal combustion engine. More specifically, the invention relates to snap-in fittings used for connecting a housing such as a fuel injector to a fuel system. This type of connector generally comprises a male end that plugs into a bore in the housing by making a tight connection by a seal carried by the male end for example, and which is held in position in the bore by a means resiliently deformable locking device supported by the housing such as a fastening clip. Such connectors are for example described in documents FR2797916 or EP0886065. However the disassembly of these connectors is often difficult because the staple must be removed with a tool and may be deformed can no longer ensure the maintenance of the tip. In addition, during disassembly, the staple can be dislodged from the housing and can fall into the engine compartment then requiring replacement. The document FR2771472 proposes a snap fitting having resilient fixing lugs for assembling the fitting on the housing by clipping the tabs on the outer wall of the housing so as to no longer use a staple.

Cependant, un tel raccord est encombrant et nécessite un volume libre important autours du boîtier. La présente invention a donc pour objet de pallier aux inconvénients des raccords connus, en proposant un raccord amélioré, permettant un montage et démontage simple dans un environnement restreint du moteur. However, such a connection is bulky and requires a large free volume around the housing. The present invention therefore aims to overcome the disadvantages of known connectors, by proposing an improved connection, allowing simple assembly and disassembly in a restricted environment of the engine.

A cet effet l'invention propose un dispositif de raccord d'une conduite sur un boîtier, comportant une un premier élément qui présente un embout mâle apte à être emmancher dans un perçage ajusté d'un boîtier comportant un élément de maintien élastique coopérant avec une rainure périphérique de l'embout mâle de manière bloquer le raccord sur le boîtier, le raccord comprenant un second élément mobile apte à déverrouiller par déformation de l'élément de maintien élastique. Selon d'autres caractéristique de l'invention, le second élément mobile peut comporter au moins un doigt qui coulisse dans une rainure longitudinale du premier élément du raccord entre une première position dans laquelle le doigt est situé dans la rainure au niveau de la partie principale et une seconde position dans laquelle le doigt se situe dans la rainure au niveau de l'embout mâle et qui est apte à déloger l'élément de maintien élastique de la rainure périphérique. La hauteur de la rainure longitudinale au niveau de l'embout mâle peut être inférieure à la hauteur du doigt coulissant dans ladite rainure. L'extrémité du doigt du coté de l'embout mâle peut être biseautée. Le second élément mobile peut comporter une portion de liaison à partir des bords de laquelle deux doigts parallèles s'étendent dans deux rainures longitudinales du premier élément du raccord. Le premier élément peut comporter deux ailettes s'étendant de part et d'autre d'un coté de la partie principale et entre lesquelles la portion de liaison peut coulisser. For this purpose, the invention proposes a device for connecting a pipe to a housing, comprising a first element which has a male endpiece adapted to be fitted into a fitting bore of a housing comprising an elastic holding element co-operating with a peripheral groove of the male end to block the connection to the housing, the connector comprising a second movable member adapted to unlock by deformation of the elastic holding member. According to other features of the invention, the second movable element may comprise at least one finger which slides in a longitudinal groove of the first element of the connection between a first position in which the finger is located in the groove at the main part. and a second position in which the finger is in the groove at the male end and is adapted to dislodge the elastic holding member from the peripheral groove. The height of the longitudinal groove at the male end may be less than the height of the sliding finger in said groove. The end of the finger on the side of the male end can be beveled. The second movable element may comprise a connecting portion from the edges of which two parallel fingers extend in two longitudinal grooves of the first element of the coupling. The first element may comprise two fins extending on either side of one side of the main part and between which the connecting portion can slide.

Un ressort peut être placé entre la partie principale du premier élément et la portion de liaison du second élément du raccord. D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description d'un exemple qui va maintenant en être faite en se référant aux dessins annexés, sur lesquels: La figure 1 est une vue en perspective d'un éclaté du raccord de l'invention; La figure 2 est une vue en coupe transversale selon l'axe II-II du raccord de la figure 1; Les figures 3A et 3B sont des vues en coupe selon l'axe III-III de la figure 2 respectivement en position verrouiller du raccord et en position de déverrouillage ; La figure 4 est une vue en coupe de l'injecteur selon l'axe IV-IV de la figure 2. En référence aux figures, un raccord 1 permet de relier une conduite de carburant non représentée à un injecteur 2 pour un véhicule automobile. A spring may be placed between the main portion of the first member and the connecting portion of the second member of the connector. Other characteristics and advantages of the invention will appear on reading the description of an example which will now be made with reference to the appended drawings, in which: FIG. 1 is a perspective view of an exploded section of the connection of the invention; Figure 2 is a cross-sectional view along the axis II-II of the connector of Figure 1; Figures 3A and 3B are sectional views along the axis III-III of Figure 2 respectively in the lock position of the connector and in the unlocked position; Figure 4 is a sectional view of the injector along the axis IV-IV of Figure 2. With reference to the figures, a connector 1 is used to connect a fuel line not shown to an injector 2 for a motor vehicle.

L'injecteur 2 comprend une arrivée de carburant définie par un perçage 7 ajusté dans le corps de l'injecteur. Le bord de l'orifice d'entrée du perçage 7 comprend un élément élastique 13 comportant une portion 17 faisant sailli dans le perçage 7 et pouvant être écarter de manière à ne plus faire sailli dans le perçage 7. Dans cet exemple, l'élément élastique 13 est une agrafe en forme d'un filament métallique. L'agrafe 13 en forme de U comprend une première partie placée dans un passage 18 perpendiculaire à l'axe du perçage 7, une seconde partie longeant le bord de l'injecteur 2 et une troisième partie placée dans une rainure 19. La première et la troisième partie comporte chacune une portion 17 faisant sailli dans le perçage 7. Selon l'invention, l'agrafe 13 est avantageusement maintenu au corps de l'injecteur 2 afin d'éviter la perte de ladite agrafe 13 dans le compartiment moteur du véhicule. Le raccord 1 comprend un premier élément 5 présentant un corps principal 3 cylindrique à partir duquel un embout d'arrivée de carburant 4 apte à recevoir une conduite de carburant s'étend perpendiculairement à l'axe principal du corps 3. Cet embout d'arrivée de carburant 4 présente un épaulement afin de maintenir la conduite emmanchée sur cet embout d'arrivée de carburant 4. The injector 2 comprises a fuel inlet defined by a bore 7 fitted in the body of the injector. The edge of the inlet orifice of the bore 7 comprises a resilient element 13 having a portion 17 projecting into the bore 7 and can be moved away so as to no longer project into the bore 7. In this example, the element elastic 13 is a staple in the form of a metal filament. The U-shaped clip 13 comprises a first portion placed in a passage 18 perpendicular to the axis of the bore 7, a second portion skirting the edge of the injector 2 and a third portion placed in a groove 19. The first and the third part each comprises a portion 17 projecting into the bore 7. According to the invention, the clip 13 is advantageously held in the body of the injector 2 to prevent the loss of said clip 13 in the engine compartment of the vehicle . The connector 1 comprises a first element 5 having a cylindrical main body 3 from which a fuel inlet nozzle 4 adapted to receive a fuel pipe extends perpendicularly to the main axis of the body 3. This end piece 4 has a shoulder to maintain the pipe fitted on this fuel inlet nozzle 4.

Le premier élément 5 du raccord 1 présente aussi une partie s'étendant suivant l'axe du corps principale 3 de manière à former un embout mâle 6 apte à s'introduire dans le perçage 7 correspondant de l'injecteur 2 de carburant. Cet embout mâle 6 s'étend à partir du corps principal 3 tout d'abord par une première portion intermédiaire 11 cylindrique dont le diamètre est inférieur à celui du corps principale 3, puis par seconde portion cylindrique 12 formant l'extrémité libre de l'embout mâle 6 dont le diamètre est inférieur à celui de la portion intermédiaire 11. La portion intermédiaire 11 et l'extrémité libre 12 de l'embout mâle 6 sont reliées par un épaulement incliné. The first element 5 of the connector 1 also has a portion extending along the axis of the main body 3 so as to form a male end 6 adapted to be introduced into the corresponding bore 7 of the fuel injector 2. This male end 6 extends from the main body 3 firstly by a first cylindrical intermediate portion 11 whose diameter is smaller than that of the main body 3, then by second cylindrical portion 12 forming the free end of the male end 6 whose diameter is smaller than that of the intermediate portion 11. The intermediate portion 11 and the free end 12 of the male end 6 are connected by an inclined shoulder.

L'extrémité libre 12 comporte une première rainure périphérique 8 dans laquelle est placé un joint d'étanchéité 9 permettant d'éviter les fuites de carburant entre le raccord 1 et l'injecteur 2 lorsque l'embout mâle 6 est inséré dans le perçage 7 correspondant de l'injecteur. Une seconde rainure périphérique 10 dite rainure de blocage est située sur la portion intermédiaire 11. Cette rainure de blocage 10 est apte à recevoir l'élément élastique 13 afin de bloquer axialement le raccord 1 dans l'alésage 7 de l'injecteur 2. Le premier élément 5 du raccord 1 présente également deux rainures longitudinales 14 à fond plat diamétralement opposées sur la surface extérieure du raccord 1 et s'étendant parallèlement à l'axe principal de raccord sur toute la longueur du corps principal 3 et de la portion intermédiaire 11. Le premier élément 5 du raccord 1 comprend aussi deux ailettes 15 s'étendant à partir du corps principal 3 du coté opposé à l'embout mâle 6, de part et d'autre des deux rainures longitudinales 14. Le bord extrémal de chacune de ces ailettes 15 comprend un retour 16 dirigé vers l'intérieur c'est-à-dire vers l'axe principal du raccord 1 et s'étendant sur une longueur de quelques millimètres par exemple sur une longueur comprise entre 1 et 5 millimètres. The free end 12 has a first peripheral groove 8 in which is placed a seal 9 to prevent fuel leakage between the connector 1 and the injector 2 when the male end 6 is inserted into the bore 7 corresponding of the injector. A second peripheral groove 10 called locking groove is located on the intermediate portion 11. This locking groove 10 is adapted to receive the elastic element 13 to axially block the connector 1 in the bore 7 of the injector 2. The first element 5 of the connector 1 also has two diametrically opposed flat-bottom longitudinal grooves 14 on the outer surface of the connector 1 and extending parallel to the main connection axis over the entire length of the main body 3 and the intermediate portion 11 The first element 5 of the coupling 1 also comprises two fins 15 extending from the main body 3 on the opposite side to the male end 6, on either side of the two longitudinal grooves 14. The end edge of each of these fins 15 comprises a return 16 directed inwards that is to say towards the main axis of the connection 1 and extending over a length of a few millimeters for example over a length between 1 and 5 millimeters.

Selon l'invention, le premier élément 5 du raccord 1 décrit précédemment est apte à recevoir un second élément du raccord 1 appelé élément poussoir 20, mobile par rapport au premier élément. Cet élément poussoir 20 comporte une portion de liaison 21 sensiblement parallélépipédique à partir des extrémités de laquelle s'étendent deux doigts 22. Ces deux doigts 22 s'étendent parallèlement l'un de l'autre et perpendiculairement à la portion de liaison 21. According to the invention, the first element 5 of the coupling 1 described above is able to receive a second element of the connection 1 called push element 20, movable relative to the first element. This pusher element 20 comprises a substantially parallelepipedal connecting portion 21 from the ends of which two fingers 22 extend. These two fingers 22 extend parallel to one another and perpendicular to the connecting portion 21.

La largeur de la portion de liaison 21 est sensiblement égale à la distance entre les deux ailettes 15 de manière à pouvoir coulisser entre ces deux ailettes 23. De plus les arêtes 23 de la portion de liaison 21 situées entre les deux doigts 22 sont biseautées afin de permettre l'introduction de la portion de liaison 21 dans entre les ailettes 15 en poussant les retour 16 et faisant légèrement fléchir les ailettes 15 vers l'extérieur. Les faces internes des deux doigts 22 en regard l'une de l'autre sont sensiblement planes et parallèles. La distance entre ses deux faces est égale à l'écartement entre les deux fonds plats des rainures longitudinales 14 et la largeur de chaque doigt 22 est sensiblement égale à la largeur des rainures longitudinales 14 de manière à ce que les doigts 22 puissent s'engager et coulisser dans les rainures longitudinales 14. La hauteur de chaque doigt 22 est au moins égale à la hauteur de la rainure longitudinale 14 au niveau de la portion intermédiaire 11 de l'embout mâle 6, et la face extérieure de l'extrémité libre de chaque doigt 22 est biseautée de manière à ce que la hauteur de chaque doigt 22 augmente régulièrement depuis l'extrémité libre. L'élément poussoir 20 est ainsi monté dans le premier élément 5 du raccord 1, avec ses deux doigts 22 positionnés dans les rainures longitudinales 14 correspondantes, et la portion de liaison 21 positionnée entre les deux ailettes 15, et coulisse entre une première position, dite de verrouillage, dans laquelle la portion de liaison 21 est en butée contre les retour 16 de ailettes 15, et une seconde position, dite de déverrouillage, dans laquelle la portions de liaison 21 est en butée contre le corps principal 3 du premier élément 5 du raccord 1. Un ressort 24 peut être placé entre la portion de liaison 21 et le corps principal 3 du premier élément 5 du raccord 1 de manière à ramener l'élément poussoir 20 dans sa position de repos qui est la position de verrouillage. Dans la position de verrouillage, l'extrémité libre de chaque doigt 22 est située dans les rainures longitudinales 14 au niveau du corps principal 3. The width of the connecting portion 21 is substantially equal to the distance between the two fins 15 so as to be able to slide between these two fins 23. In addition, the ridges 23 of the connecting portion 21 situated between the two fingers 22 are bevelled in order to allow the introduction of the connecting portion 21 in between the fins 15 by pushing the return 16 and slightly bending the fins 15 outwardly. The inner faces of the two fingers 22 facing one another are substantially flat and parallel. The distance between its two faces is equal to the spacing between the two flat bottoms of the longitudinal grooves 14 and the width of each finger 22 is substantially equal to the width of the longitudinal grooves 14 so that the fingers 22 can engage and sliding in the longitudinal grooves 14. The height of each finger 22 is at least equal to the height of the longitudinal groove 14 at the intermediate portion 11 of the male end 6, and the outer face of the free end of each finger 22 is bevelled so that the height of each finger 22 increases regularly from the free end. The pusher element 20 is thus mounted in the first element 5 of the coupling 1, with its two fingers 22 positioned in the corresponding longitudinal grooves 14, and the connecting portion 21 positioned between the two fins 15, and slides between a first position, said locking, in which the connecting portion 21 is in abutment against the return 16 fins 15, and a second position, called unlocking, in which the connecting portion 21 is in abutment against the main body 3 of the first element 5 1. A spring 24 may be placed between the connecting portion 21 and the main body 3 of the first member 5 of the connector 1 so as to return the pusher member 20 to its rest position which is the locking position. In the locking position, the free end of each finger 22 is located in the longitudinal grooves 14 at the main body 3.

Lorsque l'embout mâle est emmanché dans le perçage 7 de l'injecteur 2, une portion de l'agrafe 13 se positionne dans la seconde rainure périphérique 10 bloquant axialement le raccord 1 dans le perçage 7 de l'injecteur 2. Dans la position de déverrouillage, l'extrémité libre de chaque doigt 22 est située dans les rainures longitudinales 14 au-delà de la seconde rainure périphérique 10. Lors du passage à cette position, les extrémités biseautées des doigts 22 désengagent l'agrafe 13 de la seconde rainure périphérique 10. En effet, les doigts 22 font sailli des rainures longitudinales 14 au niveau de la portion intermédiaire 11, la hauteur des doigts 22 étant supérieure ou égale à la hauteur des rainures longitudinales 14 à ce niveau. Le démontage du raccord 1 peut ainsi être effectué lorsque l'agrafe 13 est désengagée de la seconde rainure périphérique 10 par l'élément poussoir 20. Cette invention permet avantageusement de ne nécessiter aucun outil pour le démontage du support. De plus l'écartement de l'agrafe 13 est limité par déplacement induit par le coulissement du poussoir 20 empêchant ainsi toute déformation définitive de l'agrafe. Enfin, cette invention propose un raccord permettant un montage et 20 démontage simple dont l'encombrement est réduit. When the male end is fitted into the bore 7 of the injector 2, a portion of the clip 13 is positioned in the second peripheral groove 10 axially locking the coupling 1 in the bore 7 of the injector 2. In the position unlatched, the free end of each finger 22 is located in the longitudinal grooves 14 beyond the second peripheral groove 10. Upon passage to this position, the beveled ends of the fingers 22 disengage the clip 13 of the second groove 10. Indeed, the fingers 22 protrude from the longitudinal grooves 14 at the intermediate portion 11, the height of the fingers 22 being greater than or equal to the height of the longitudinal grooves 14 at this level. The disassembly of the connection 1 can thus be performed when the clip 13 is disengaged from the second peripheral groove 10 by the pusher element 20. This invention advantageously makes it unnecessary to use any tool for dismounting the support. In addition, the spacing of the clip 13 is limited by displacement induced by the sliding of the pusher 20 thus preventing any definite deformation of the staple. Finally, this invention provides a connector for simple assembly and disassembly whose size is reduced.

Claims (7)

REVENDICATIONS 1. Dispositif de raccord (1) d'une conduite sur un boîtier, comportant une un premier élément (5) qui présente une partie principale (3), un embout de connexion à une conduite (4) et un embout mâle (6) apte à être emmancher dans un perçage ajusté (7) d'un boîtier (2) comportant un élément de maintien élastique (13) coopérant avec une rainure périphérique (10) de l'embout mâle (6) de manière bloquer le raccord (1) sur le boîtier (2), caractérisé en ce que le raccord (1) comprend un second élément mobile (20) apte à déverrouiller par déformation de l'élément de maintien élastique (13). 1. Device for connecting (1) a pipe to a housing, comprising a first element (5) which has a main part (3), a connection piece to a pipe (4) and a male end (6) adapted to be fitted into an adjusted bore (7) of a housing (2) comprising an elastic holding element (13) cooperating with a peripheral groove (10) of the spigot (6) so as to block the coupling (1 ) on the housing (2), characterized in that the connector (1) comprises a second movable member (20) adapted to unlock by deformation of the elastic holding member (13). 2. Dispositif de raccord (1) selon la revendication 1, caractérisé en ce que le second élément mobile (20) comporte au moins un doigt (22) qui coulisse dans une rainure longitudinale (14) du premier élément (5) du raccord (1) entre une première position dans laquelle le doigt (22) est situé dans la rainure au niveau de la partie principale et une seconde position dans laquelle le doigt se situe dans la rainure au niveau de l'embout mâle (6) et est apte à déloger l'élément de maintien élastique (13) de la rainure périphérique (10). 2. Connection device (1) according to claim 1, characterized in that the second movable element (20) comprises at least one finger (22) which slides in a longitudinal groove (14) of the first element (5) of the coupling ( 1) between a first position in which the finger (22) is located in the groove at the main part and a second position in which the finger is in the groove at the male end (6) and is fit dislodging the elastic holding member (13) from the peripheral groove (10). 3. Dispositif de raccord (1) selon la revendication 2, caractérisé en ce que la hauteur de la rainure longitudinale (14) au niveau de l'embout mâle est inférieure à la hauteur du doigt (22) coulissant dans ladite rainure (14). 3. Connecting device (1) according to claim 2, characterized in that the height of the longitudinal groove (14) at the male end is less than the height of the finger (22) sliding in said groove (14). . 4. Dispositif de raccord (1) selon une des revendications 2 ou 3, caractérisé en ce que l'extrémité du doigt (22) du coté de l'embout mâle est biseautée.30 4. Connecting device (1) according to one of claims 2 or 3, characterized in that the end of the finger (22) on the side of the male end is tapered. 5. Dispositif de raccord (1) selon une des revendications 2 à 4, caractérisé en ce que le second élément mobile (20) comporte une portion de liaison (21) à partir des bords de laquelle deux doigts parallèles (22) s'étendent dans deux rainures longitudinales du premier élément (5) du raccord (1). 5. Connection device (1) according to one of claims 2 to 4, characterized in that the second movable member (20) comprises a connecting portion (21) from the edges of which two parallel fingers (22) extend in two longitudinal grooves of the first element (5) of the coupling (1). 6. Dispositif de raccord (1) selon la revendication 5, caractérisé en ce que le premier élément comporte deux ailettes (15) s'étendant de part et d'autre d'un coté de la partie principale (3) et entre lesquelles la portion de liaison (21) coulisse. 6. Connection device (1) according to claim 5, characterized in that the first element comprises two fins (15) extending on either side of one side of the main part (3) and between which the connecting portion (21) slides. 7. Dispositif de raccord (1) selon la revendication 6, caractérisé en ce qu'un ressort est placé entre la partie principale (3) du premier élément (5) et la portion de liaison (21) du second élément (20) du raccord (1). Connecting device (1) according to claim 6, characterized in that a spring is placed between the main part (3) of the first element (5) and the connecting portion (21) of the second element (20) of the fitting (1).
FR0760011A 2007-12-19 2007-12-19 Duct i.e. fuel duct, connecting device i.e. connector, for case i.e. fuel injector of motor vehicle, has fastener cooperated with peripheral groove of male nozzle for blocking device on case, and push element unlocking fastener Withdrawn FR2925649A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0760011A FR2925649A3 (en) 2007-12-19 2007-12-19 Duct i.e. fuel duct, connecting device i.e. connector, for case i.e. fuel injector of motor vehicle, has fastener cooperated with peripheral groove of male nozzle for blocking device on case, and push element unlocking fastener

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0760011A FR2925649A3 (en) 2007-12-19 2007-12-19 Duct i.e. fuel duct, connecting device i.e. connector, for case i.e. fuel injector of motor vehicle, has fastener cooperated with peripheral groove of male nozzle for blocking device on case, and push element unlocking fastener

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Publication Number Publication Date
FR2925649A3 true FR2925649A3 (en) 2009-06-26

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Application Number Title Priority Date Filing Date
FR0760011A Withdrawn FR2925649A3 (en) 2007-12-19 2007-12-19 Duct i.e. fuel duct, connecting device i.e. connector, for case i.e. fuel injector of motor vehicle, has fastener cooperated with peripheral groove of male nozzle for blocking device on case, and push element unlocking fastener

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FR (1) FR2925649A3 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4905964A (en) * 1986-08-29 1990-03-06 Fujipura Seiko Co., Ltd. Swivelable connector for tubular conduits
US5228728A (en) * 1991-12-17 1993-07-20 Huron Products Industries, Inc. Tube retainer release sleeve
DE4240279A1 (en) * 1992-12-01 1994-06-09 Voss Armaturen Connector for pipe lines - has insert part connected integral or separately to pipe and pushed into socket where it is held by deformable clamping elements of holder engaging over cylindrical outer circumference.
FR2797916A1 (en) * 1999-08-25 2001-03-02 Siemens Ag LEAKAGE CONNECTION AND FUEL INJECTOR PROVIDED WITH SUCH A LEAKAGE CONNECTION

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4905964A (en) * 1986-08-29 1990-03-06 Fujipura Seiko Co., Ltd. Swivelable connector for tubular conduits
US5228728A (en) * 1991-12-17 1993-07-20 Huron Products Industries, Inc. Tube retainer release sleeve
DE4240279A1 (en) * 1992-12-01 1994-06-09 Voss Armaturen Connector for pipe lines - has insert part connected integral or separately to pipe and pushed into socket where it is held by deformable clamping elements of holder engaging over cylindrical outer circumference.
FR2797916A1 (en) * 1999-08-25 2001-03-02 Siemens Ag LEAKAGE CONNECTION AND FUEL INJECTOR PROVIDED WITH SUCH A LEAKAGE CONNECTION

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