EP1346946B1 - Secure operation filling nozzle and filling installation including such a filling nozzle - Google Patents

Secure operation filling nozzle and filling installation including such a filling nozzle Download PDF

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Publication number
EP1346946B1
EP1346946B1 EP03356049A EP03356049A EP1346946B1 EP 1346946 B1 EP1346946 B1 EP 1346946B1 EP 03356049 A EP03356049 A EP 03356049A EP 03356049 A EP03356049 A EP 03356049A EP 1346946 B1 EP1346946 B1 EP 1346946B1
Authority
EP
European Patent Office
Prior art keywords
trigger
nozzle
lever
sensor
valve
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.)
Expired - Lifetime
Application number
EP03356049A
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German (de)
French (fr)
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EP1346946A1 (en
Inventor
Jean-Jacques Lacroix
Maurice Ravaz
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.)
Staubli Faverges SCA
Original Assignee
Staubli Faverges SCA
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Filing date
Publication date
Application filed by Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP1346946A1 publication Critical patent/EP1346946A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/42—Filling nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0376—Dispensing pistols

Definitions

  • the invention relates to a gun for filling a container with a fluid under pressure.
  • the invention also relates to a filling installation of a tank of a motor vehicle in liquefied pure gas in which is used such a gun.
  • LPG liquefied petroleum gas
  • the invention more particularly intends to provide a filling gun of a container, particularly adapted to the distribution of LPG, which allows to deliver a fluid in a sealed manner, while ensuring no fluid is spilled into the atmosphere until the gun is connected to the tip with which it must cooperate, even if the user exerts a force on the trigger.
  • Another object of the invention is to propose a gun such that the discharges of fluid when disconnected from the nozzle are minimized.
  • the invention relates to a filling gun of a container with a fluid under pressure, the gun being provided with a hooking means on a connector connected to the container, a controlled valve, able to close selectively a fluid flow conduit, and a sensor for detecting the attachment of the gun to a nozzle, this sensor being adapted, as a function of this attachment, to activate a kinematic connection between a control member and the valve, this link allowing, in active configuration, to move the valve from a position where it closes the conduit to a position where it leaves a free passage for the fluid in the conduit, while in the non-active configuration of the link, the valve can not be actuated by means of the aforementioned organ.
  • the kinematic connection comprises a lever, articulated on the valve, between a first position where it is not displaceable by the control member and a second position where it can be moved by this member. driving the valve, the sensor being able to move the lever from its first to its second position.
  • the control member is a trigger articulated on the gun and provided with at least one cut, notch or groove whose profile forms a first part which allows to receive an integral element of the lever without significant interaction between the lever and the trigger.
  • the cut, groove or notch also comprises a second part which has a different geometry from the first part and extends it, the element integral with the lever being able to slide according to the profile of the first part of the cut, groove or notch, when the lever is in its first position, and cooperating with the profile of the second part, when the lever is in its second position, so that it allows the transmission of a force between the trigger and the lever.
  • the kinematic connection between the control trigger and the valve does not allow to pass the gun as it is not hooked on a tip.
  • the attachment is detected by the lever which is secured to an element for moving the trigger from a configuration where it is "crazy" to a configuration where it is “active".
  • the aforementioned element cooperates with the profile in its first part, while it cooperates with the profile in its second part when the trigger is in active configuration.
  • a gun may incorporate one or more of the features mentioned in the dependent claims.
  • the invention also relates to an installation for filling a tank of a motor vehicle with gas pure liquefied which comprises a gun as previously described and envisaged below.
  • the gun 1 shown in the figures is connected to the downstream end of a hose 2 whose upstream end is connected to a liquefied pure gas distribution pump 3.
  • the gun 1 is intended to cooperate with tips such as the tip 4 shown in the figures which is mounted on a motor vehicle 5 and which is connected by a conduit 6 integrated in the vehicle 5, a tank 7 of liquefied gas.
  • the tip 4 is equipped with a valve 8 resiliently loaded by a spring 9 towards a portion 10 of the nozzle 4 forming a seat.
  • the tip 4 On its outer peripheral surface, the tip 4 is provided with a groove 11 of flared shape and a recess 12 separated from the groove 11 by a flange 13.
  • the gun 1 comprises a body 20 inside which is housed a pipe 21 connected to a bend 22 whose converging outlet 22 has communicating with a volume 23 for receiving the tip 4 in the body 20.
  • the volume 23 has a shape adapted to the outer shape of the nozzle 4 and is equipped with an O-ring 24 bearing an end chamfer 14 of the nozzle 4.
  • the gun 1 is equipped a ring 25 for retaining the tip 4 in the volume 23.
  • This ring 25 is resiliently loaded by a spring 26 exerting thereon a force F 1 perpendicular to a longitudinal axis XX 'of the tip 4 and the volume 23 when they are opposite or engaged with each other, as shown in the figures.
  • the elements 25 and 26 thus constitute means for attaching the gun 1 to the tip 4.
  • a rod 30 is mounted, with possibility of sliding parallel to the axis X-X ', in a housing 31 formed in the body 20.
  • This rod 30 has a nose 32 intended to come into engagement in the recess 12 of the nozzle 4.
  • This rod also comprises a notch 33 of a partial reception portion 25 of the ring 25 opposite to a portion 25 b on which is exerted the force F 1 .
  • the rod 30 is hinged, about a geometric axis YY ', on a rocker 40 formed of two plates 41 and 42 mounted as a yoke around the end 34 and articulated on the body 20 around a geometric axis Y 1 Y ' 1 perpendicular to the axis X-X', this axis being materialized by a pin 43 passing through the plates 41 and 42.
  • Each of the plates 41 and 42 is provided with a heel 44, respectively 45, of generally parallelepiped shape.
  • a valve 50 is mounted in the elbow 22 and abuts, under the influence of a resilient force exerted by a spring 29, against the converging portion 22a forming the downstream portion of the elbow 22.
  • the valve 50 is extended by a rod 51 hinged about an axis Y 2 -Y ' 2 with a lever 60 formed of two plates 61 and 62 which engages the end 52 of the rod 51.
  • the axes Y 1 -Y ' 1 and Y 2 -Y' 2 are parallel.
  • the plates 61 and 62 have a geometry such that they respectively face the heels 44 and 45.
  • a circular section cylindrical pin 63 is mounted through the plates 61 and 62 along an axis parallel to the axis Y 2 -Y '2.
  • a trigger 70 is hinged to a support 27 secured to the pipe 21.
  • Y 3 -Y ' 3 is the axis of articulation of the trigger 70, this axis being parallel to the axis Y 1 -Y' 1 .
  • the trigger 70 is provided with a notch 71 through which the pin 63 and in which it can move.
  • the profile of this notch comprises a first portion shaped along a circular arc C 1 centered on the axis Y 3 -Y ' 3 .
  • the portion 71a is in the form of a circular arc.
  • the notch 71 also includes a second portion 71 b which communicates with the portion 71a and extends in a direction AA 'substantially perpendicular to the portion 71a in the connecting area between these parts.
  • the bottom of the part 71b forms a seat 71 wherein c can be retained the pin 63.
  • the trigger 70 is also provided on its face 70 1 visible in Figures 1 to 5, a groove 72 which comprises a first portion 72 to 1 generally formed along a circular arc C 2 centered on the axis Y 3 -Y '3, and a second portion 72 b 1 L-shape communicating with the portion 72 1.
  • a pin 46 1 is mounted on the plate 41 and extends, along an axis Y 4 -Y ' 4 parallel to the axis Y 1 -Y' 1 , to the groove 72 1 .
  • the pin 46 1 is intended to slide in the groove 72 1 .
  • the trigger 70 is provided with a second groove 72 2 of the same geometry as the groove 72 1 , with an arcuate portion 72 b2 and an L-shaped portion 72 a2 .
  • the plate 42 carries a pin 46 2 intended to slide in the groove 72 2 .
  • the spring 29 pushes the valve 50 towards its seat 22 a .
  • a device 80 is provided for a temporary locking of the trigger 70 in the configuration of FIG. 5.
  • This device comprises an arm 81 hinged to the body 20 about an axis Y 5 -Y ' 5 parallel to the axis Y 1 -Y ' 1 and a shuttle 82 slidably mounted on the arm 81 and held in position by a screw 83.
  • the flow of fluid can be controlled by the trigger 70.
  • the pin 63 slides in the part 71a of the notch 71 without a tensile force being transmitted to the lever 60, in such a so that the valve 50 remains in abutment against its seat formed by the converging portion 22 a.
  • the edge 71 a 1 of the portion 71 has the closest to the axis Y 3 -Y ' 3 defines, essentially, the sliding path of the pin 63.
  • the active parts of the notch 71 are the edges 71 to 1 and 71 b 1 which are defined by the profile of a solid portion 74 of the trigger 70.
  • valve 50 it is not possible to operate the valve 50 as the kinematic connection between the trigger 70 and the valve is not made active by the movement of the lever 60 to its position in which the pin 63 is engaged in the part 71 b of the notch 71.
  • a torsion spring 90 is disposed around the pin 64 constituting the physical axis of articulation between the end 52 of the valve 50 and the plates 61 and 62 of the lever 60, so that the end 91 of this spring exerts on the lever 60 a force F 12 tending to bring the lever 60 to its position in Figure 1.
  • the cooperation of the pins 46 1 and 46 2 and grooves 72 1 and 72 2 prohibits a separation of the gun 1 and the nozzle 4 when the valve 50 is detached from the converge 22 a .
  • the pins 46 1 and 46 2 can slide in the parts 72 1 and 72 2 of the grooves 72 1 and 72 2 .
  • the tilting F 4 of the rocker 40 has the effect of bringing the pins 46 1 and 46 2 in the parts 72 b 1 and 72 b 2 notches 72 1 and 72 2 .
  • the pins 46 1 and 46 2 each slide along a lateral surface 72 c 1 , respectively 72 c 2 , notches 72 1 and 72 2 .
  • the counters 46 1 and 46 2 are then bearing against the surfaces 72 1 c and 72 2 c, so that the rocker 40 can no longer pivot about the axis Y 1 -Y '1 in a direction opposite to the arrow F 4 .
  • the rocker 40 is thus locked by its cooperation with the surfaces 72 c 1 and 72 c 2 in a lowered configuration of its counters 46 1 and 46 2, it exerts on the rod 30 a tensile force F 13 which has the effect of pressing firmly a surface 33a defining the notch 33 against a surface of the ring 25c 25.
  • the surface 33 a is inclined at an angle ⁇ equal to about 45 ° with respect to a longitudinal axis X 1 -X ' 1 of the rod 30 which is parallel to the axis X-X'.
  • the surface 25 c is, for its part, inclined at the same angle ⁇ with respect to the axis X-X ', the axes X 1 -X' 1 and XX 'being parallel to each other.
  • the force F 13 is thus transmitted to the ring 25 in the form of a force F 14 of the same direction and in the same direction as the force F 1 , this force keeping the ring 25 firmly in engagement with the groove 11.
  • valves 8 and 50 are in surface abutment against each other, which contributes to the sealing of the coupling made between the elements 1 and 4. It is also noted that the valve 8 is pushed downstream under the effect of the pressure of the fluid flowing in the pipe 21 and in the bend 22.
  • the invention has been described with reference to its use in a LPG fuel system of a motor vehicle which is particularly advantageous.
  • a gun according to the invention can, however, be used in other types of pressurized fluid supply installations in which a high degree of safety is sought.
  • levers or rockers 40 and 60 formed of two plates which engages the parts 34 or 52 with which they cooperate. Levers formed in one piece can be envisaged.
  • the invention has been shown with a notch 71 and grooves 72 1 and 72 2 , it can however be implemented with a trigger provided with a notch of equivalent geometry in place of the grooves and / or with grooves in the place of the cut. Any grooves may be provided on only one face of the trigger 70.
  • the geometry of the grooves and notches is not limited to that shown in the figures.
  • the functional parts of these grooves are essentially the seat 71c and the bearing surfaces 72 and 72 c 1 c 2.
  • the other parts of these grooves are clearances intended to allow the movement of pins 46 1 , 46 2 and 63, these clearances may have various shapes.
  • the invention has been shown with a notch 71 inscribed in the trigger 70 and having a generally constant width which is adapted to the diameter of the pin 63 to allow its guidance.
  • two grooves may be formed on either side of the trigger 70 to receive fingers carried by the lever 60.
  • the first and second portions 71a and 71b mentioned above may be formed by a cut-out around a solid door similar to the part 74, this cutout possibly leading to the front edge of the trigger 70.
  • the profile of the cut, notch or groove provided on the trigger to receive the element secured to the lever provides the two “crazy” and “active” configuration of the trigger.
  • the grooves 72 1 and 72 2 can be replaced by a cut or notch which passes through the trigger 70.
  • the profile of this groove, cut or notch which is defined in particular by the surface 72 c 1 and 72 c 2 adjacent a central tab 75, provides the desired security operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Nozzles (AREA)
  • Coating Apparatus (AREA)
  • Toys (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The nozzle incorporates a ring (25) for attaching to a connector (4) in the vehicle fuel tank filler pipe, and a detector (30) that permits operation of the nozzle's trigger (70) once the connection has been made. The detector activates a kinematic linkage (52, 60, 63, 72) between the trigger and a nozzle valve (50), allowing fuel to flow through the nozzle only when it is properly attached to the fuel tank connector.

Description

L'invention a trait à un pistolet de remplissage d'un contenant avec un fluide sous pression. L'invention a également trait à une installation de remplissage d'un réservoir d'un véhicule automobile en gaz pur liquéfié dans laquelle est utilisé un tel pistolet.The invention relates to a gun for filling a container with a fluid under pressure. The invention also relates to a filling installation of a tank of a motor vehicle in liquefied pure gas in which is used such a gun.

Il est connu, par exemple de US-A-5,904,302, selon le préambule de la revendication 1, d'utiliser un système à baïonnette pour assurer la fixation d'un embout de remplissage de kérosène sur un aéronef. En fonction du verrouillage, un levier peut bloquer un clapet situé dans cet embout. Le verrouillage à baïonnette est délicat à mettre en oeuvre et l'utilisation de ce système complexe est, en pratique, réservée aux spécialistes travaillant dans les zones aéroportuaires.It is known, for example from US-A-5,904,302, according to the preamble of claim 1, to use a bayonet system to ensure the attachment of a kerosene filling nozzle on an aircraft. Depending on the lock, a lever can block a valve located in this tip. The bayonet lock is difficult to implement and the use of this complex system is, in practice, reserved for specialists working in airport areas.

Dans le domaine de la distribution de gaz de pétrole liquéfié (GPL) comme carburant pour véhicule automobile, il est connu que des précautions sérieuses doivent être prises pour éviter que du gaz ne se répande dans l'atmosphère ambiante. Il est en particulier impératif qu'une connexion étanche soit réalisée entre le dispositif de distribution, ou pompe, et le réservoir du véhicule. Dans les dispositifs connus, l'utilisateur doit disposer un embout d'extrémité d'un tuyau souple sur un embout situé sur le véhicule puis activer une manette de verrouillage de ces embouts. L'utilisateur doit alors retourner vers la pompe pour commander une électrovanne permettant d'alimenter le tuyau souple en gaz sous pression. Ces manoeuvres connues ne sont pas commodes et peuvent dérouter un utilisateur non averti.In the field of the distribution of liquefied petroleum gas (LPG) as fuel for a motor vehicle, it is known that serious precautions must be taken to prevent gas from spreading in the ambient atmosphere. It is in particular imperative that a tight connection is made between the dispensing device, or pump, and the vehicle tank. In known devices, the user must have an end cap of a hose on a tip located on the vehicle and activate a lever to lock these tips. The user must then return to the pump to control a solenoid valve for supplying the hose with pressurized gas. These known maneuvers are not convenient and may confuse an unsuspecting user.

En outre, dans les dispositifs connus, le verrouillage de l'extrémité du tuyau souple sur l'embout du véhicule est généralement réalisé grâce à un système à griffes complexe et, par conséquent, peu fiable. Un tel système à griffes peut être mal engagé sur l'embout du véhicule, d'où un risque de branchement désaxé pouvant conduire à des fuites de gaz.In addition, in known devices, the locking of the end of the hose on the tip of the vehicle is generally achieved through a complex claw system and, therefore, unreliable. Such claw system may be poorly engaged on the tip of the vehicle, resulting in a risk of off-axis connection may lead to gas leaks.

Les dispositifs utilisés dans le domaine du remplissage des réservoirs de véhicules automobiles en GPL doivent en outre être compatibles avec les embouts normalisés montés sur les véhicules.Devices used in the field of filling tanks of LPG motor vehicles must also be compatible with the standard caps mounted on vehicles.

C'est à ces limitations qu'entend plus particulièrement répondre l'invention en proposant un pistolet de remplissage d'un contenant, tout particulièrement adapté à la distribution de GPL, qui permet de délivrer un fluide de façon étanche, alors qu'il assure qu'aucun fluide n'est répandu dans l'atmosphère tant que le pistolet n'est pas connecté à l'embout avec lequel il doit coopérer, même si l'utilisateur exerce un effort sur la gâchette.It is to these limitations that the invention more particularly intends to provide a filling gun of a container, particularly adapted to the distribution of LPG, which allows to deliver a fluid in a sealed manner, while ensuring no fluid is spilled into the atmosphere until the gun is connected to the tip with which it must cooperate, even if the user exerts a force on the trigger.

Un autre objet de l'invention est de proposer un pistolet tel que les rejets de fluide lors de sa déconnexion par rapport à l'embout sont minimisés.Another object of the invention is to propose a gun such that the discharges of fluid when disconnected from the nozzle are minimized.

Dans cet esprit, l'invention concerne un pistolet de remplissage d'un contenant avec un fluide sous pression, ce pistolet étant pourvu d'un moyen d'accrochage sur un embout raccordé sur le contenant, d'un clapet commandé, apte à obturer sélectivement un conduit d'écoulement du fluide, et d'un capteur de détection de l'accrochage du pistolet sur un embout, ce capteur étant apte, en fonction de cet accrochage, à rendre active une liaison cinématique entre un organe de commande et le clapet, cette liaison permettant, en configuration active, de déplacer le clapet d'une position où il obture le conduit vers une position où il laisse libre un passage pour le fluide dans ce conduit, alors que, en configuration non active de la liaison, le clapet ne peut pas être actionné au moyen de l'organe précité. La liaison cinématique comprend un levier, articulé sur le clapet, entre une première position où il n'est pas déplaçable par l'organe de commande et une seconde position où il peut être déplacé par cet organe en entraînant le clapet, le capteur étant apte à déplacer le levier de sa première vers sa seconde position. L'organe de commande est une gâchette articulée sur le pistolet et pourvue d'au moins une découpe, entaille ou gorge dont le profil forme une première partie qui permet de recevoir un élément solidaire du levier sans interaction notable entre le levier et la gâchette. La découpe, gorge ou entaille comprend également une seconde partie qui a une géométrie différente de la première partie et la prolonge, l'élément solidaire du levier étant apte à coulisser selon le profil de la première partie de la découpe, gorge ou entaille, lorsque le levier est dans sa première position, et à coopérer avec le profil de la seconde partie, lorsque le levier est dans sa seconde position, de telle sorte qu'il permet la transmission d'un effort entre la gâchette et le levier.In this spirit, the invention relates to a filling gun of a container with a fluid under pressure, the gun being provided with a hooking means on a connector connected to the container, a controlled valve, able to close selectively a fluid flow conduit, and a sensor for detecting the attachment of the gun to a nozzle, this sensor being adapted, as a function of this attachment, to activate a kinematic connection between a control member and the valve, this link allowing, in active configuration, to move the valve from a position where it closes the conduit to a position where it leaves a free passage for the fluid in the conduit, while in the non-active configuration of the link, the valve can not be actuated by means of the aforementioned organ. The kinematic connection comprises a lever, articulated on the valve, between a first position where it is not displaceable by the control member and a second position where it can be moved by this member. driving the valve, the sensor being able to move the lever from its first to its second position. The control member is a trigger articulated on the gun and provided with at least one cut, notch or groove whose profile forms a first part which allows to receive an integral element of the lever without significant interaction between the lever and the trigger. The cut, groove or notch also comprises a second part which has a different geometry from the first part and extends it, the element integral with the lever being able to slide according to the profile of the first part of the cut, groove or notch, when the lever is in its first position, and cooperating with the profile of the second part, when the lever is in its second position, so that it allows the transmission of a force between the trigger and the lever.

Grâce à l'invention, la liaison cinématique entre la gâchette de commande et le clapet ne permet pas de rendre passant le pistolet tant que celui-ci n'est pas accroché sur un embout. L'accrochage est détecté grâce au levier qui est solidaire d'un élément permettant de faire passer la gâchette d'une configuration où elle est « folle » à une configuration où elle est « active ». Dans la configuration folle, l'élément précité coopère avec le profil dans sa première partie, alors qu'il coopère avec le profil dans sa seconde partie lorsque la gâchette est en configuration active.Thanks to the invention, the kinematic connection between the control trigger and the valve does not allow to pass the gun as it is not hooked on a tip. The attachment is detected by the lever which is secured to an element for moving the trigger from a configuration where it is "crazy" to a configuration where it is "active". In the crazy configuration, the aforementioned element cooperates with the profile in its first part, while it cooperates with the profile in its second part when the trigger is in active configuration.

Selon des aspects avantageux mais non obligatoires de l'invention, un pistolet peut incorporer une ou plusieurs des caractéristiques mentionnées dans les revendications dépendantes.According to advantageous but not compulsory aspects of the invention, a gun may incorporate one or more of the features mentioned in the dependent claims.

L'invention concerne également une installation de remplissage d'un réservoir d'un véhicule automobile en gaz pur liquéfié qui comprend un pistolet tel que précédemment décrit et envisagé ci-après.The invention also relates to an installation for filling a tank of a motor vehicle with gas pure liquefied which comprises a gun as previously described and envisaged below.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre d'un mode de réalisation d'un pistolet et d'une installation conformes à son principe, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels:

  • La figure 1 est une représentation schématique de principe d'une installation conforme à l'invention dont le pistolet et l'embout avec lequel il coopère sont représentés en coupe longitudinale ;
  • La figure 2 est une vue à plus petite échelle du pistolet et de l'embout de la figure 1, lors de l'accrochage du pistolet sur l'embout ;
  • La figure 3 est une vue analogue à la figure 3, lorsque le pistolet est accroché sur l'embout ;
  • La figure 4 est une vue en perspective de l'embout et des éléments internes du pistolet dans la configuration de la figure 3 ;
  • La figure 5 est une vue analogue à la figure 2 et à l'échelle de la figure 1, lorsque la gâchette du pistolet est commandée pour que s'écoule du fluide et
  • La figure 6 est une vue du type de la figure 4, lorsque le pistolet est dans la configuration de la figure 5.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of an embodiment of a gun and an installation in accordance with its principle, given only to by way of example and with reference to the appended drawings in which:
  • Figure 1 is a schematic representation of a principle of an installation according to the invention, the gun and the tip with which it cooperates are shown in longitudinal section;
  • Figure 2 is a view to a smaller scale of the gun and the tip of Figure 1, during the attachment of the gun on the tip;
  • Figure 3 is a view similar to Figure 3, when the gun is hooked on the tip;
  • Figure 4 is a perspective view of the nozzle and the internal elements of the gun in the configuration of Figure 3;
  • FIG. 5 is a view similar to FIG. 2 and to the scale of FIG. 1, when the gun trigger is controlled so that fluid flows and
  • Figure 6 is a view of the type of Figure 4, when the gun is in the configuration of Figure 5.

Le pistolet 1 représenté sur les figures est raccordé sur l'extrémité aval d'un tuyau souple 2 dont l'extrémité amont est raccordée à une pompe 3 de distribution de gaz pur liquéfié.The gun 1 shown in the figures is connected to the downstream end of a hose 2 whose upstream end is connected to a liquefied pure gas distribution pump 3.

Le pistolet 1 est destiné à coopérer avec des embouts tels que l'embout 4 représenté sur les figures qui est monté sur un véhicule automobile 5 et qui est relié, par un conduit 6 intégré au véhicule 5, à un réservoir 7 de gaz liquéfié.The gun 1 is intended to cooperate with tips such as the tip 4 shown in the figures which is mounted on a motor vehicle 5 and which is connected by a conduit 6 integrated in the vehicle 5, a tank 7 of liquefied gas.

L'embout 4 est équipé d'un clapet 8 chargé élastiquement par un ressort 9 en direction d'une partie 10 de l'embout 4 formant siège.The tip 4 is equipped with a valve 8 resiliently loaded by a spring 9 towards a portion 10 of the nozzle 4 forming a seat.

Sur sa surface périphérique externe, l'embout 4 est pourvu d'une gorge 11 de forme évasée ainsi que d'un renfoncement 12 séparé de la gorge 11 par une collerette 13.On its outer peripheral surface, the tip 4 is provided with a groove 11 of flared shape and a recess 12 separated from the groove 11 by a flange 13.

Le pistolet 1 comprend un corps 20 à l'intérieur duquel est logé un tuyau 21 raccordé à un coude 22 dont le débouché en forme de convergent 22a communique avec un volume 23 de réception de l'embout 4 dans le corps 20. Le volume 23 a une forme adaptée à la forme extérieure de l'embout 4 et est équipé d'un joint torique 24 d'appui d'un chanfrein d'extrémité 14 de l'embout 4. Autour du volume 23, le pistolet 1 est équipé d'une bague 25 de retenue de l'embout 4 dans le volume 23. Cette bague 25 est chargée élastiquement par un ressort 26 exerçant sur celle-ci un effort F1 perpendiculaire à un axe X-X' longitudinal de l'embout 4 et du volume 23 lorsque ceux-ci sont en regard ou engagés l'un de l'autre, comme représenté sur les figures.The gun 1 comprises a body 20 inside which is housed a pipe 21 connected to a bend 22 whose converging outlet 22 has communicating with a volume 23 for receiving the tip 4 in the body 20. The volume 23 has a shape adapted to the outer shape of the nozzle 4 and is equipped with an O-ring 24 bearing an end chamfer 14 of the nozzle 4. Around the volume 23, the gun 1 is equipped a ring 25 for retaining the tip 4 in the volume 23. This ring 25 is resiliently loaded by a spring 26 exerting thereon a force F 1 perpendicular to a longitudinal axis XX 'of the tip 4 and the volume 23 when they are opposite or engaged with each other, as shown in the figures.

Lorsque le pistolet 1 est déplacé vers l'embout 4 dans le sens des flèches F2 aux figures 1 à 3, la collerette 13 repousse la bague 25 à l'encontre de l'effort F1, comme représenté à la figure 2, puis la bague 25 s'engage dans la gorge 13, sous l'effet de l'effort F1, comme représenté à la figure 3.When the gun 1 is moved towards the nozzle 4 in the direction of the arrows F 2 in FIGS. 1 to 3, the flange 13 pushes the ring 25 against the force F 1 , as represented in FIG. the ring 25 engages in the groove 13, under the effect of the force F 1 , as represented in FIG.

Les éléments 25 et 26 constituent donc des moyens d'accrochage du pistolet 1 sur l'embout 4.The elements 25 and 26 thus constitute means for attaching the gun 1 to the tip 4.

Une tige 30 est montée, avec possibilité de coulissement parallèlement à l'axe X-X', dans un logement 31 ménagé dans le corps 20. Cette tige 30 comporte un nez 32 destiné à venir en engagement dans le renfoncement 12 de l'embout 4. Cette tige comporte également une encoche 33 de réception partielle d'une partie 25a de la bague 25 opposée à une partie 25b sur laquelle est exercé l'effort F1.A rod 30 is mounted, with possibility of sliding parallel to the axis X-X ', in a housing 31 formed in the body 20. This rod 30 has a nose 32 intended to come into engagement in the recess 12 of the nozzle 4. This rod also comprises a notch 33 of a partial reception portion 25 of the ring 25 opposite to a portion 25 b on which is exerted the force F 1 .

Au niveau de son extrémité 34 opposée aux parties 32 et 33, la tige 30 est articulée, autour d'un axe géométrique Y-Y', sur un basculeur 40 formé de deux plaques 41 et 42 montées en chape autour de l'extrémité 34 et articulées sur le corps 20 autour d'un axe géométrique Y1-Y'1 perpendiculaire à l'axe X-X', cet axe étant matérialisé par un pion 43 traversant les plaques 41 et 42. Chacune des plaques 41 et 42 est pourvue d'un talon 44, respectivement 45, de forme globalement parallélépipédique.At its end 34 opposite the parts 32 and 33, the rod 30 is hinged, about a geometric axis YY ', on a rocker 40 formed of two plates 41 and 42 mounted as a yoke around the end 34 and articulated on the body 20 around a geometric axis Y 1 Y ' 1 perpendicular to the axis X-X', this axis being materialized by a pin 43 passing through the plates 41 and 42. Each of the plates 41 and 42 is provided with a heel 44, respectively 45, of generally parallelepiped shape.

Un clapet 50 est monté dans le coude 22 et vient en appui, sous l'effet d'un effort élastique exercé par un ressort 29, contre le convergent 22a formant la partie aval du coude 22.A valve 50 is mounted in the elbow 22 and abuts, under the influence of a resilient force exerted by a spring 29, against the converging portion 22a forming the downstream portion of the elbow 22.

Le clapet 50 se prolonge par une tige 51 articulée autour d'un axe Y2-Y'2 avec un levier 60 formé de deux plaques 61 et 62 prenant en chape l'extrémité 52 de la tige 51. Les axes Y1-Y'1 et Y2-Y'2 sont parallèles.The valve 50 is extended by a rod 51 hinged about an axis Y 2 -Y ' 2 with a lever 60 formed of two plates 61 and 62 which engages the end 52 of the rod 51. The axes Y 1 -Y ' 1 and Y 2 -Y' 2 are parallel.

Les plaques 61 et 62 ont une géométrie telle qu'elles viennent respectivement en regard des talons 44 et 45.The plates 61 and 62 have a geometry such that they respectively face the heels 44 and 45.

Les plaques 41 et 61 ont été ajoutées aux figures 2, 3 et 5 pour la clarté du dessin.The plates 41 and 61 have been added to Figures 2, 3 and 5 for clarity of the drawing.

Par ailleurs, un pion cylindrique à section circulaire 63 est monté à travers les plaques 61 et 62 selon un axe parallèle à l'axe Y2-Y'2.Furthermore, a circular section cylindrical pin 63 is mounted through the plates 61 and 62 along an axis parallel to the axis Y 2 -Y '2.

Une gâchette 70 est articulée sur un support 27 solidaire du tuyau 21. On note Y3-Y'3 l'axe d'articulation de la gâchette 70, cet axe étant parallèle à l'axe Y1-Y'1.A trigger 70 is hinged to a support 27 secured to the pipe 21. Y 3 -Y ' 3 is the axis of articulation of the trigger 70, this axis being parallel to the axis Y 1 -Y' 1 .

La gâchette 70 est pourvue d'une entaille 71 que traverse le pion 63 et dans laquelle il peut se déplacer.The trigger 70 is provided with a notch 71 through which the pin 63 and in which it can move.

Le profil de cette entaille comprend une première partie conformée suivant un arc de cercle C1 centré sur l'axe Y3-Y'3. En ce sens, la partie 71a est en forme d'arc de cercle. L'entaille 71 comprend également une seconde partie 71b avec laquelle communique la partie 71a et qui s'étend selon une direction A-A' globalement perpendiculaire à la partie 71a dans la zone de jonction entre ces parties. Le fond de la partie 71b forme un siège 71c dans lequel peut être retenu le pion 63.The profile of this notch comprises a first portion shaped along a circular arc C 1 centered on the axis Y 3 -Y ' 3 . In this sense, the portion 71a is in the form of a circular arc. The notch 71 also includes a second portion 71 b which communicates with the portion 71a and extends in a direction AA 'substantially perpendicular to the portion 71a in the connecting area between these parts. The bottom of the part 71b forms a seat 71 wherein c can be retained the pin 63.

La gâchette 70 est également pourvue, sur sa face 701 visible aux figures 1 à 5, d'une gorge 72 qui comprend une première partie 72a 1 conformée globalement suivant un arc de cercle C2 centré sur l'axe Y3-Y'3, ainsi qu'une seconde partie 72b 1 en forme de L qui communique avec la partie 72a 1. Un pion 461 est monté sur la plaque 41 et s'étend, selon un axe Y4-Y'4 parallèle à l'axe Y1-Y'1, vers la gorge 721. Le pion 461 est destiné à coulisser dans la gorge 721.The trigger 70 is also provided on its face 70 1 visible in Figures 1 to 5, a groove 72 which comprises a first portion 72 to 1 generally formed along a circular arc C 2 centered on the axis Y 3 -Y '3, and a second portion 72 b 1 L-shape communicating with the portion 72 1. A pin 46 1 is mounted on the plate 41 and extends, along an axis Y 4 -Y ' 4 parallel to the axis Y 1 -Y' 1 , to the groove 72 1 . The pin 46 1 is intended to slide in the groove 72 1 .

Sur sa face opposée 702 visible à la figure 6, la gâchette 70 est pourvue d'une seconde gorge 722 de même géométrie que la gorge 721, avec une partie en arc de cercle 72b2 et une partie en L 72a2. La plaque 42 porte un pion 462 destiné à coulisser dans la gorge 722.On its opposite face 70 2 visible in Figure 6, the trigger 70 is provided with a second groove 72 2 of the same geometry as the groove 72 1 , with an arcuate portion 72 b2 and an L-shaped portion 72 a2 . The plate 42 carries a pin 46 2 intended to slide in the groove 72 2 .

Le fonctionnement est le suivant :The operation is as follows:

Lorsque le pistolet 1 est accroché sur l'embout 4, comme expliqué ci-dessus, le nez 32 de la tige 30 est poussé dans le sens de la flèche F3 à la figure 3, ce qui a pour effet de faire coulisser la tige 30 dans le logement 31, dans le sens de cette flèche, un déplacement correspondant de l'extrémité 34 étant obtenu. Ce déplacement a pour effet de faire basculer le basculeur 40, autour de l'axe Y1-Y'1 dans le sens de la flèche F4, au point que les talons 44 et 45 viennent en appui contre les plaques 61 et 62, ce qui induit un pivotement du levier 60 dans le sens trigonométrique à la figure 3. L'effort d'appui des talons 44 et 45 sur le levier 60 est représenté par la flèche F5 à la figure 3, alors que le pivotement de ce levier est représenté par la flèche F6. Du fait du pivotement du levier 60, le pion 63 qui, dans la configuration de la figure 1 est engagé dans la partie 71a de la rainure 71, est déplacé vers la partie 71b en direction du siège 71c.When the gun 1 is hooked on the nozzle 4, as explained above, the nose 32 of the rod 30 is pushed in the direction of the arrow F 3 in Figure 3, which has the effect of sliding the rod 30 in the housing 31, in the direction of this arrow, a corresponding displacement of the end 34 being obtained. This displacement has the effect of tilting the rocker 40, around the axis Y 1 -Y ' 1 in the direction of the arrow F 4 , to the point that the heels 44 and 45 abut against the plates 61 and 62, which induces a pivoting of the lever 60 in the trigonometric direction in FIG. bearing the heels 44 and 45 on the lever 60 is represented by the arrow F 5 in Figure 3, while the pivoting of the lever is represented by the arrow F 6 . Due to the pivoting of the lever 60, the pin 63 which in the Figure 1 configuration is engaged in the part 71a of the groove 71, is moved toward the portion 71b towards the seat 71 c.

Dans cette configuration, si l'utilisateur exerce sur la gâchette 70 un effort F7 dirigé vers la partie formant poignée 28 du corps 20, la gâchette exerce, par le bord avant 71b 1 de la partie 71b et sur le pion 63 porté par le levier 60, un effort F8 de traction résultant dans un effort de traction correspondant F9 sur le clapet, cet effort ayant pour effet de décoller le clapet 50 du convergent 22a. Ceci permet un écoulement E de fluide sous pression depuis sa source 3 vers le réservoir 7 relié à l'embout 4.In this configuration, if the user exerts on the trigger 70 a force F 7 directed towards the handle portion 28 of the body 20, the trigger exerts, by the front edge 71 b 1 of the portion 71 b and on the pin 63 worn by the lever 60, a traction force F 8 resulting in a corresponding traction force F 9 on the valve, this force having the effect of taking off the valve 50 of the convergent 22 a . This allows a flow E of fluid under pressure from its source 3 to the reservoir 7 connected to the nozzle 4.

Si l'on relâche la gâchette 70, le ressort 29 repousse le clapet 50 vers son siège 22a.If the trigger 70 is released, the spring 29 pushes the valve 50 towards its seat 22 a .

Un dispositif 80 est prévu pour un blocage temporaire de la gâchette 70 dans la configuration de la figure 5. Ce dispositif comprend un bras 81 articulé sur le corps 20 autour d'un axe Y5-Y'5 parallèle à l'axe Y1-Y'1 et une navette 82 montée coulissante sur le bras 81 et retenue en position grâce à une vis 83.A device 80 is provided for a temporary locking of the trigger 70 in the configuration of FIG. 5. This device comprises an arm 81 hinged to the body 20 about an axis Y 5 -Y ' 5 parallel to the axis Y 1 -Y ' 1 and a shuttle 82 slidably mounted on the arm 81 and held in position by a screw 83.

Lorsque la gâchette 70 est soumise à l'effort F7, elle déplace la navette 82 dans le sens de la flèche F10 à la figure 5, de sorte qu'elle se bloque contre un épaulement radial externe 81a du bras 81. Lorsqu'il convient de stopper l'écoulement E, un effort supplémentaire F'7, de même sens que l'effort F7 mais d'intensité supérieure, peut être exercé, ce qui a pour effet d'amener, par une sur-course, la navette 82 en butée contre la tête de la vis 83 puis de faire basculer le bras 81 dans le sens de la flèche F11, à l'encontre d'un effort élastique exercé par un ressort 84. L'extrémité 73 de la gâchette 70 est alors libérée par rapport au bras 81, la gâchette 70 pouvant alors revenir vers la position de la figure 3.When the trigger 70 is subjected to the force F 7 , it moves the shuttle 82 in the direction of the arrow F 10 in FIG. 5, so that it locks against an external radial shoulder 81 a of the arm 81. it is necessary to stop the flow E, an additional effort F ' 7 , in the same sense that the force F 7 but of higher intensity, can be exerted, which has the effect of bringing, by an over-stroke , the shuttle 82 abuts against the head of the screw 83 and then tilts the arm 81 in the direction of the arrow F 11 , against an elastic force exerted by a spring 84. The end 73 of the trigger 70 is then released relative to the arm 81, the trigger 70 can then return to the position of Figure 3.

Ainsi, lorsque le pistolet 1 est accroché sur l'embout 4, l'écoulement de fluide peut être commandé grâce à la gâchette 70.Thus, when the gun 1 is hooked on the nozzle 4, the flow of fluid can be controlled by the trigger 70.

Si l'effort F7 est exercé sur la poignée 70 dans la configuration de la figure 1, le pion 63 coulisse dans la partie 71a de l'entaille 71 sans qu'un effort de traction ne soit transmis au levier 60, de telle sorte que le clapet 50 demeure en appui contre son siège formé par le convergent 22a. Dans cette configuration, le bord 71a 1 de la partie 71a le plus proche de l'axe Y3-Y'3 définit, pour l'essentiel, le trajet de coulissement du pion 63.If the force F 7 is exerted on the handle 70 in the configuration of Figure 1, the pin 63 slides in the part 71a of the notch 71 without a tensile force being transmitted to the lever 60, in such a so that the valve 50 remains in abutment against its seat formed by the converging portion 22 a. In this configuration, the edge 71 a 1 of the portion 71 has the closest to the axis Y 3 -Y ' 3 defines, essentially, the sliding path of the pin 63.

Ainsi, les parties actives de l'entaille 71 sont les bords 71a 1 et 71b 1 qui sont définis par le profil d'une partie pleine 74 de la gâchette 70.Thus, the active parts of the notch 71 are the edges 71 to 1 and 71 b 1 which are defined by the profile of a solid portion 74 of the trigger 70.

Ainsi, il n'est pas possible de manoeuvrer le clapet 50 tant que la liaison cinématique entre la gâchette 70 et le clapet n'est pas rendue active par le déplacement du levier 60 vers sa position dans laquelle le pion 63 est engagé dans la partie 71b de l'entaille 71.Thus, it is not possible to operate the valve 50 as the kinematic connection between the trigger 70 and the valve is not made active by the movement of the lever 60 to its position in which the pin 63 is engaged in the part 71 b of the notch 71.

Un ressort de torsion 90 est disposé autour du pion 64 constituant l'axe physique d'articulation entre l'extrémité 52 du clapet 50 et les plaques 61 et 62 du levier 60, de telle sorte que l'extrémité 91 de ce ressort exerce sur le levier 60 un effort F12 tendant à ramener le levier 60 vers sa position de la figure 1.A torsion spring 90 is disposed around the pin 64 constituting the physical axis of articulation between the end 52 of the valve 50 and the plates 61 and 62 of the lever 60, so that the end 91 of this spring exerts on the lever 60 a force F 12 tending to bring the lever 60 to its position in Figure 1.

Entre outre, la coopération des pions 461 et 462 et des gorges 721 et 722 interdit une séparation du pistolet 1 et de l'embout 4 lorsque le clapet 50 est décollé du convergent 22a. En effet, lorsque le pion 63 coulisse dans la partie 71a de l'entaille 71, les pions 461 et 462 peuvent coulisser dans les parties 72a 1 et 72a 2 des gorges 721 et 722. En revanche, lorsque les talons 44 et 45 repoussent le levier 60, comme représenté par la flèche F5 à la figure 3, le basculement F4 du basculeur 40 a pour effet d'amener les pions 461 et 462 dans les parties 72b 1 et 72b 2 des entailles 721 et 722. Ensuite, du fait du déplacement de la gâchette 70 sous l'effet de l'effort F7, les pions 461 et 462 coulissent chacun le long d'une surface latérale 72c 1, respectivement 72c 2, des entailles 721 et 722. Les pions 461 et 462 sont alors en appui contre les surfaces 72c 1 et 72c 2, de telle sorte que le basculeur 40 ne peut plus basculer autour de l'axe Y1-Y'1 dans un sens opposé à la flèche F4.Furthermore, the cooperation of the pins 46 1 and 46 2 and grooves 72 1 and 72 2 prohibits a separation of the gun 1 and the nozzle 4 when the valve 50 is detached from the converge 22 a . In fact, when the pin 63 slides in the part 71a of the notch 71, the pins 46 1 and 46 2 can slide in the parts 72 1 and 72 2 of the grooves 72 1 and 72 2 . However, when the heels 44 and 45 push the lever 60, as shown by the arrow F 5 in Figure 3, the tilting F 4 of the rocker 40 has the effect of bringing the pins 46 1 and 46 2 in the parts 72 b 1 and 72 b 2 notches 72 1 and 72 2 . Then, because of the displacement of the trigger 70 under the effect of the force F 7 , the pins 46 1 and 46 2 each slide along a lateral surface 72 c 1 , respectively 72 c 2 , notches 72 1 and 72 2 . The counters 46 1 and 46 2 are then bearing against the surfaces 72 1 c and 72 2 c, so that the rocker 40 can no longer pivot about the axis Y 1 -Y '1 in a direction opposite to the arrow F 4 .

Le basculeur 40 étant ainsi verrouillé par sa coopération avec les surfaces 72c 1 et 72c 2 dans une configuration abaissée de ses pions 461 et 462, il exerce sur la tige 30 un effort de traction F13 qui a pour effet de plaquer fermement une surface 33a délimitant l'encoche 33 contre une surface 25c de la bague 25.The rocker 40 is thus locked by its cooperation with the surfaces 72 c 1 and 72 c 2 in a lowered configuration of its counters 46 1 and 46 2, it exerts on the rod 30 a tensile force F 13 which has the effect of pressing firmly a surface 33a defining the notch 33 against a surface of the ring 25c 25.

La surface 33a est inclinée d'un angle α égal à environ 45° par rapport à un axe longitudinal X1-X'1 de la tige 30 qui est parallèle à l'axe X-X'. La surface 25c est, quant à elle, inclinée du même angle α par rapport à l'axe X-X', les axes X1-X'1 et X-X' étant parallèles entre eux.The surface 33 a is inclined at an angle α equal to about 45 ° with respect to a longitudinal axis X 1 -X ' 1 of the rod 30 which is parallel to the axis X-X'. The surface 25 c is, for its part, inclined at the same angle α with respect to the axis X-X ', the axes X 1 -X' 1 and XX 'being parallel to each other.

L'effort F13 est ainsi transmis à la bague 25 sous la forme d'un effort F14 de même direction et de même sens que l'effort F1, cet effort maintenant fermement la bague 25 en engagement dans la gorge 11.The force F 13 is thus transmitted to the ring 25 in the form of a force F 14 of the same direction and in the same direction as the force F 1 , this force keeping the ring 25 firmly in engagement with the groove 11.

Ainsi, il n'est pas possible de retirer le pistolet 1 de l'embout 4 tant que les pions 461 et 462 demeurent respectivement en appui contre les surfaces 72c 1 et 72c 2, c'est-à-dire tant qu'il est possible de manoeuvrer le clapet 50 grâce à la gâchette 70.Thus, it is not possible to remove the gun 1 from the nozzle 4 as the pins 46 1 and 46 2 remain respectively in abutment against the surfaces 72 c 1 and 72 c 2 , that is to say both it is possible to operate the valve 50 with the trigger 70.

On note que les clapets 8 et 50 sont en appui surfacique l'un contre l'autre, ce qui contribue à l'étanchéité de l'accouplement réalisé entre les éléments 1 et 4. On note également que le clapet 8 est repoussé vers l'aval sous l'effet de la pression du fluide circulant dans le tuyau 21 et dans le coude 22.It is noted that the valves 8 and 50 are in surface abutment against each other, which contributes to the sealing of the coupling made between the elements 1 and 4. It is also noted that the valve 8 is pushed downstream under the effect of the pressure of the fluid flowing in the pipe 21 and in the bend 22.

L'invention a été décrite en référence à son utilisation dans une installation d'alimentation en GPL d'un véhicule automobile qui est particulièrement avantageuse. Un pistolet conforme à l'invention peut cependant être utilisé dans d'autres types d'installation d'alimentation en fluide sous pression dans lesquelles un degré de sécurité élevé est recherché.The invention has been described with reference to its use in a LPG fuel system of a motor vehicle which is particularly advantageous. A gun according to the invention can, however, be used in other types of pressurized fluid supply installations in which a high degree of safety is sought.

L'invention a été représentée avec des leviers ou basculeurs 40 et 60 formés de deux plaques prenant en chape les parties 34 ou 52 avec lesquelles elles coopèrent. Des leviers formés d'une seule pièce peuvent être envisagés.The invention has been shown with levers or rockers 40 and 60 formed of two plates which engages the parts 34 or 52 with which they cooperate. Levers formed in one piece can be envisaged.

L'invention a été représentée avec une entaille 71 et des gorges 721 et 722, elle peut cependant être mise en oeuvre avec une gâchette pourvue d'une entaille de géométrie équivalente à la place des gorges et/ou avec des gorges à la place de l'entaille. Les gorges éventuelles peuvent être ménagées sur une seule face de la gâchette 70. La géométrie des gorges et entailles n'est pas limitée à celle représentée sur les figures. En pratique, les parties fonctionnelles de ces gorges sont essentiellement le siège 71c et les surfaces d'appui 72c 1 et 72c 2. Les autres parties de ces gorges sont des dégagements destinés à permettre le déplacement des pions 461, 462 et 63, ces dégagements pouvant avoir des formes variées.The invention has been shown with a notch 71 and grooves 72 1 and 72 2 , it can however be implemented with a trigger provided with a notch of equivalent geometry in place of the grooves and / or with grooves in the place of the cut. Any grooves may be provided on only one face of the trigger 70. The geometry of the grooves and notches is not limited to that shown in the figures. In practice, the functional parts of these grooves are essentially the seat 71c and the bearing surfaces 72 and 72 c 1 c 2. The other parts of these grooves are clearances intended to allow the movement of pins 46 1 , 46 2 and 63, these clearances may have various shapes.

L'invention a été représentée avec une entaille 71 inscrite dans la gâchette 70 et ayant une largeur globalement constante qui est adaptée au diamètre du pion 63 pour permettre son guidage. En variante, deux gorges peuvent être ménagées de part et d'autre de la gâchette 70 pour recevoir des doigts portés par le levier 60. Selon une autre variante, les première et seconde parties 71a et 71b précitées peuvent être formée par une découpe ménagée autour d'une porte pleine analogue à la partie 74, cette découpe pouvant déboucher sur le bord avant de la gâchette 70.The invention has been shown with a notch 71 inscribed in the trigger 70 and having a generally constant width which is adapted to the diameter of the pin 63 to allow its guidance. Alternatively, two grooves may be formed on either side of the trigger 70 to receive fingers carried by the lever 60. According to another variant, the first and second portions 71a and 71b mentioned above may be formed by a cut-out around a solid door similar to the part 74, this cutout possibly leading to the front edge of the trigger 70.

Dans tous les cas, le profil de la découpe, entaille ou gorge prévue sur la gâchette pour recevoir l'élément solidaire du levier permet d'obtenir les deux configuration « folle » et « active » de la gâchette.In all cases, the profile of the cut, notch or groove provided on the trigger to receive the element secured to the lever provides the two "crazy" and "active" configuration of the trigger.

De la même manière, les gorges 721 et 722 peuvent être remplacées par une découpe ou entaille qui traverse la gâchette 70. Là encore, le profil de cette gorge, découpe ou entaille, qui est défini notamment par les surface 72c 1 et 72c 2 qui jouxtent une languette centrale 75, permet d'obtenir le fonctionnement sécurité recherché.In the same way, the grooves 72 1 and 72 2 can be replaced by a cut or notch which passes through the trigger 70. Again, the profile of this groove, cut or notch, which is defined in particular by the surface 72 c 1 and 72 c 2 adjacent a central tab 75, provides the desired security operation.

Claims (12)

  1. A nozzle for filling a container (7) with a pressurised fluid, said nozzle being provided with means (25) of securing it to an adapter (4) connected to said container, a servo valve (50) capable of selectively closing off a fluid flow duct (21, 22), and a sensor (30) for detecting securing of said nozzle to an adapter (4), said sensor being capable, as a function of said securing, of enabling a kinematic linkage (52, 60, 63, 71) between a control member (70) and said valve (50), said linkage making it possible, in enabled configuration, to displace said valve from a position in which it closes off said duct (21, 22) to a position in which it leaves free a passage (E) for said fluid in said duct, while, in the disabled configuration of said linkage, the valve cannot be actuated by means of said control member, said kinematic linkage comprising a lever (60) articulated to said valve (50), between a first position (Fig. 1), in which it is not displaceable by said control member (70), and a second position (Figs. 3, 5) in which it may be displaced by said control member, so driving said valve, said sensor (30) being capable of displacing said lever from said first position to said second position, characterised in that said control member is a trigger (7) articulated to the nozzle (1) and provided with at least one slot, notch (71) or groove, the profile of which forms a first part (71a) capable of receiving an element (63) integral with said lever (60), without significant interaction between said lever (60) and said trigger (70), while a second part (71b) of said profile has a different geometry (A-A') from that of said first part and extends it, said element (63) being capable of sliding along the profile of the first part (71a) when said lever (60) is in its first position and of cooperating with the profile of said second part (71b, 71c) when said lever (60) is in its second position, in such a way that it enables transmission of a force (F8) between said trigger and said lever.
  2. A nozzle according to claim 1, characterised in that said slot, notch (71) or groove is cut into said trigger (70) and exhibits a substantially constant width allowing said element (63) to be guided bearing against one or other of its edges.
  3. A nozzle according to either one of the preceding claims, characterised in that said first part (71a) is shaped overall as an arc of a circle (C1) centred on an axis (Y3-Y'3) of articulation of said trigger (70).
  4. A nozzle according to any one of the preceding claims, characterised in that said second part (71b) extends in a direction (A-A') which overall is perpendicular to said first part (71a) in the zone where said parts (71a, 71b) join and forms a retaining seat (71c) for said element (63) integral with said lever (60).
  5. A nozzle according to any one of the preceding claims, characterised in that it comprises means (90) for resilient return (F12) of said lever (60) to a position in which said element is engaged in the first part (71a) of said groove or notch (71).
  6. A nozzle according to any one of the preceding claims, characterised in that it comprises means (30, 40) of locking said securing means (25) in a configuration in which said nozzle (1) is secured to an adapter (4), said locking means being capable of locking said securing means as a function of the configuration of said kinematic linkage.
  7. A nozzle according to claim 6, characterised in that said locking means comprise a rocker (40) articulated to said sensor (30) which is rigid, said rocker being capable of exerting on said sensor a force (F13) transmitted by said sensor to said securing means (25) and resulting (F14) in locking thereof.
  8. A nozzle according to claim 7, characterised in that said securing means comprise a ring (25) capable of surrounding an adapter (4) and engaging partially in a peripheral groove (11) in said adapter, said ring being provided with a surface (25c) inclined relative to a central axis (X-X') of said ring, said surface being capable of coming to rest against a surface (33a) of said sensor (30) inclined relative to a direction (X1-X'1) of slide (F3) of said sensor, the transmission of said force (F13, F14) from said sensor to said ring taking place by bearing between said surfaces.
  9. A nozzle according to either one of claims 7 or 8, characterised in that said rocker (40) is provided with at least one raised portion (461, 462) capable of cooperating with a corresponding raised portion (72c1, 72c2) provided on said control member (70), cooperation between said raised portions holding said rocker in a position in which it exerts said force (F13) on said sensor (30).
  10. A nozzle according to any one of claims 7 to 9, characterised in that said control member is a trigger (70) provided with at least one slot, notch or groove (721, 722) capable of receiving an element (461, 462) integral with said rocker (40), said slot, notch or groove comprising a first part (72a1, 72a2) capable of receiving said element without significant interaction between said rocker (40) and said trigger (70), and a second part (72b1, 72b2) towards which said element (461, 462) is displaced when said kinematic linkage is enabled, positioning of said element in said second part holding the rocker (40) in a position in which, when said trigger is subjected to an actuating force (F7) for displacement of said valve (50), said rocker exerts on said sensor (30) said force (F13, F14) transmitted to said securing means (25).
  11. A nozzle according to claim 10, characterised in that said first part is shaped overall as an arc of a circle (C2) centred on an axis (Y3-Y'3) of articulation of said trigger (70).
  12. An installation (1-3) for filling a tank (7) in an automotive vehicle (5) with pure liquefied gas, characterised in that it comprises a nozzle (1) according to any one of the preceding claims.
EP03356049A 2002-03-19 2003-03-18 Secure operation filling nozzle and filling installation including such a filling nozzle Expired - Lifetime EP1346946B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0203388 2002-03-19
FR0203388A FR2837487B1 (en) 2002-03-19 2002-03-19 SAFETY OPERATING GUN AND FILLING PLANT COMPRISING SUCH A GUN

Publications (2)

Publication Number Publication Date
EP1346946A1 EP1346946A1 (en) 2003-09-24
EP1346946B1 true EP1346946B1 (en) 2006-01-18

Family

ID=27772237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03356049A Expired - Lifetime EP1346946B1 (en) 2002-03-19 2003-03-18 Secure operation filling nozzle and filling installation including such a filling nozzle

Country Status (6)

Country Link
US (1) US7040358B2 (en)
EP (1) EP1346946B1 (en)
AT (1) ATE316065T1 (en)
DE (1) DE60303279T2 (en)
ES (1) ES2252638T3 (en)
FR (1) FR2837487B1 (en)

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Also Published As

Publication number Publication date
ES2252638T3 (en) 2006-05-16
US7040358B2 (en) 2006-05-09
ATE316065T1 (en) 2006-02-15
DE60303279T2 (en) 2006-09-21
US20030178096A1 (en) 2003-09-25
DE60303279D1 (en) 2006-04-06
FR2837487A1 (en) 2003-09-26
EP1346946A1 (en) 2003-09-24
FR2837487B1 (en) 2004-06-11

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