WO2000053856A1 - Connection method, meter and tap on a bracket assembly for implementing same - Google Patents

Connection method, meter and tap on a bracket assembly for implementing same Download PDF

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Publication number
WO2000053856A1
WO2000053856A1 PCT/FR2000/000563 FR0000563W WO0053856A1 WO 2000053856 A1 WO2000053856 A1 WO 2000053856A1 FR 0000563 W FR0000563 W FR 0000563W WO 0053856 A1 WO0053856 A1 WO 0053856A1
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WO
WIPO (PCT)
Prior art keywords
nut
tap
meter
groove
fitting
Prior art date
Application number
PCT/FR2000/000563
Other languages
French (fr)
Inventor
Jean-Michel Pretceille
Original Assignee
Pretceille Jean Michel
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 Pretceille Jean Michel filed Critical Pretceille Jean Michel
Priority to AU31728/00A priority Critical patent/AU3172800A/en
Publication of WO2000053856A1 publication Critical patent/WO2000053856A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/072—Arrangement of flowmeters
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/09—Component parts or accessories
    • E03B7/095—Component holders or housings, e.g. boundary boxes
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges

Definitions

  • the present invention relates to a method intended to make the connection of a fluid inlet valve to a counter tamper-proof, an anti-fraud assembly to meter and inlet valve, and an anti-fraud connection, intended to be used for the measurement of quantities of fluid.
  • the invention has applications to any fluid, and in particular to any liquid, it is described below in its application to the connection of the first outlet or division of a user water meter to the water distributor or the private water supply installation.
  • an "anti-fraud” (or “tamper-proof”) connector which comprises a nozzle terminated by a collar and a nut intended to turn on the nozzle and applied against the collar in the connected position; the end piece has a groove hidden by the nut both in the connected position and in the released position, and the nut has a groove which houses an elastic ring which engages in the throat of the end piece when it comes in look at this groove at the end of the loosening of the nut.
  • the object of the invention is to remedy these drawbacks, on the one hand by preventing this separation of the meter and the tap, and on the other hand by means of an anti-fraud connection which does not have the first aforementioned drawback.
  • the subject of the invention is therefore a process intended to make the connection of a tap and a counter tamper-proof, in which the spacing of the counter and the tap during the loosening of the fitting is prohibited.
  • the invention relates to a method intended to make the connection of a fluid inlet valve to a fluid meter inviolable by a screw connection which comprises, on the valve or the meter, a threaded male end and , on the meter or the tap respectively, a nut which can rotate around an axis of the fitting on a nozzle fitted with a nut retaining collar.
  • the operation of connecting the meter to the tap comprises the selection of a screwed connection, the nut of which, when it is unscrewed, moves back to a position in which it is trapped and can no longer be screwed back on, the positioning of the meter and the tap in a form aligned in the direction of the axis of the fitting and in such a way that they cannot deviate from each other in this direction, and the tightening of the nut on the male end.
  • the step of positioning the meter and the valve is carried out by mounting on a console having arms between which the meter and the valve are arranged.
  • the positioning step comprises moving the meter or the valve in translation at least in a direction transverse to the direction of the axis of the fitting.
  • the positioning step comprises switching the counter or the tap at least around an axis substantially perpendicular to the direction of the axis of the fitting.
  • the selection of a screw connection includes the selection of a connection which can be reset after the meter and the tap have been separated.
  • the invention also relates to an anti-fraud assembly with a meter and a fluid inlet valve mounted on a console, of the type which comprises a support console having two arms fixed relative to each other so that they delimit a fixed distance between them, a counter mounted on the console, a tap mounted on the console, and a screw connection which includes, on the tap or the counter, a threaded male end and, on the counter or the tap respectively, a nut which can rotate around an axis of the fitting on a nozzle fitted with a nut retaining collar.
  • the fitting is a screwed fitting whose nut, when it is unscrewed, recedes to a position in which it is trapped and can no longer be screwed back on, and the counter and the tap are mounted on the console. so that they cannot be moved apart from each other in the direction of the fitting axis after they have been placed in the fitting position.
  • the console comprises a device for guiding in translation such that the counter or the tap at least is positioned relative to the tap or to the counter respectively by translational movement in the direction perpendicular to the axis of the fitting.
  • the console comprises a tilting guide device such that at least the counter or the tap is positioned relative to the tap or the counter respectively by tilting the counter or the tap around an axis substantially perpendicular to 1 axis of the fitting and adjacent to an arm of the console.
  • the pivot axis of the meter or of the tap at least does not overlap the direction of the axis of the fitting, but is offset relative to the latter.
  • the pivot axis of the meter or of the tap is placed near an arm of the console.
  • the assembly includes a backlash device for mounting the meter or the tap on a respective console arm.
  • this game take-up device is only accessible when the counter or the tap respectively is separated from the console.
  • the invention also relates to an anti-fraud coupling, of the type which comprises a nozzle ending in a collar, and a nut intended to turn on the nozzle and applied against the collar when the coupling is in the connected position, and in which the end piece has a groove hidden by the nut both in the connection position and in the released position, and the nut has a groove housing an elastic ring which engages in the throat of the end piece when it comes opposite this throat.
  • the internal groove of the nut has a width significantly greater than the width of the ring, in the position prior to the connection, a first part of the groove of the nut is opposite the groove of the end piece, and the ring is placed in a second part of the groove of the nut which is closer to the collar and is not opposite the groove of the end piece, and, during the connection operation, the ring is moved into the first part of the groove of the nut which is furthest from the collar, so that, after unscrewing the nut, the ring held by the first part of the groove of the nut which is most away from the collar is brought in front of the groove of the end piece before the nut is completely unscrewed.
  • the internal groove of the nut is deeper in the first part remote from the collar than in the second part closer to the collar, the end piece has a shoulder preventing the ring from following the nut. to its position closest to the collar, and the elastic ring has a non-circular shape so that it can be simultaneously in contact with the interior of the nut by its external periphery and with the exterior of the end piece by its internal periphery.
  • the elastic ring has a slightly triangular annular shape.
  • FIG. 1 represents, in partial section, a water inlet valve provided with an "anti-fraud" connection known in the art.
  • the body of the tap 10 carries a handle 12 for controlling a key which opens or closes the water inlet passage from the tap.
  • the tap On the side intended to be connected to the meter, the tap carries a fitting comprising a nozzle 14 consisting of a socket 16 screwed into a tapped part of the body of the valve so that a groove 18 is delimited between the nozzle and the end tap.
  • the socket 16 of the end piece ends in a collar 20, in a known manner.
  • a shoulder 22 formed by a collar comes to bear against the rear face of the collar and clamps the collar against the threaded male end of a meter, not shown. , with interposition of a seal.
  • a groove 24 is formed in the nut behind the flange which delimits the shoulder 22, and houses an elastic ring 26 which clamps the end piece.
  • the lower part of figure 1 indicates that, after the tap has taken its connection position indicated in the upper part of figure 1, then has been moved backwards to separate the fitting, the nut has brought its groove 24 to the right of the throat 18 of the end piece, so that the elastic ring 26 has fallen into this groove 18, while remaining partially in the groove 24 of the nut. Consequently, the ring prevents the nut from advancing towards the position indicated at the top of FIG. 1, so that the connector is locked in the open position.
  • a ring 28, for example of plastic, placed on the end piece prevents the nut from moving back to the point of bringing the elastic ring 26 to the right of the groove 18. After tightening the nut, it is therefore necessary that the ring 28 is removed to that the nut can then move back enough so that the ring 26 comes to jam in the groove 18.
  • the valve shown in Figure 1 has certain advantages in that it prevents a new connection of the valve.
  • This reconditioning includes the unscrewing of the socket 16 from the fitting, the extraction of the nut and the ring, then the reassembly of the ring on the socket and the screwing of the socket on the tap.
  • the aforementioned connection therefore has many advantages, but there is a relatively simple way to prevent it from locking.
  • This means consists simply in gradually removing the counter as and when the nut is unscrewed, so that the nut, while rotating, remains in the position shown at the top of the connector of Figure 1. From this way, the ring never comes to engage in the groove 18, and the fitting can be reused.
  • FIG. 2 represents an assembly according to the invention.
  • This set essentially comprises a console 30, an inlet tap 32 and a counter 34.
  • the console 30 has a very rigid construction. It is represented in the form of a very resistant thick sheet metal console having stamped parts giving it great rigidity so that its two arms 36, 38 cannot be separated from one another.
  • the arm 36 has an opening 39 which may be circular, but which is preferably polygonal or of any other non-circular shape corresponding to the shape of the end of the tap 32 so that the tap cannot rotate around the 'connecting pin. In this way, it is not necessary to hold the tap 32 to prevent it from turning when the union nut is tightened on the meter or is loose.
  • the other arm 38 of the console delimits two ears in which a pin 40 of a pivoting support 42 intended to hold the end of the counter 34 can pivot.
  • the support 42 may simply have a shape complementary to that of the end of the counter so that the latter is held in the direction of the connection axis.
  • this support has a tapped hole in which can be screwed a ring 44 which constitutes a bearing surface against which s applies an additional ace to the counter 34.
  • This ring 44 is not accessible from the outside of the support 42 and it can only be screwed or unscrewed when the counter 34 has come out of the support 42.
  • the ring 44 which is screwed in the threaded hole of the support 42 thus constitutes a play take-up device which makes it possible to adjust the position of the counter along the connection axis.
  • the console 30 was formed from deep drawn sheet metal having great rigidity. However, it can be made of any material giving great rigidity. One can for example use molded metals or even plastic shells, for example reinforced with glass fibers. The term “console” therefore designates a simple support which avoids the separation of the meter and the tap. The rigidity of this console can also be increased by its own fixing devices, for example by legs sealed in masonry.
  • swivel support can be mounted on the side of the tap and not on the side of the meter. Swivel fittings can also be mounted on both sides.
  • the tilting axis 40 is spaced from the alignment axis of the meter and the connector, but this arrangement is simply intended to facilitate the positioning of the meter by tilting against the seal 46. It is also possible that the tilting axis intersects with the axis of the fitting or deviates from it differently. In addition, instead of positioning by tilting, it is possible to use positioning by lateral displacement in translation, for example by guiding the counter. 34 along an arm 38 which then has a slide provided for this purpose.
  • the important characteristic according to the invention is that, when the tap and the meter are in alignment with one another, it is not possible to separate them one of the other along the axis of alignment.
  • a backlash device incorporated in the pivoting support 42 in the form of a ring which is screwed into a tapped hole.
  • the play take-up device can be mounted on the other side, i.e. on the tap side, or play take-up devices can be mounted on both sides.
  • This backlash device which allows the adjustment of the length along the alignment axis, is not accessible when the tap and the meter are connected 1 'to 1' another .
  • FIG. 6 represents a variant which makes it possible to avoid this phenomenon.
  • this variant allows the use of normal clearance at the end of the thread of the valve nut 32.
  • the tilting support 42 is replaced by another tilting support 72.
  • a nut 60 which has a clearance 62 before the start of its tapping, cooperates, with the interposition of a gasket sealing 64, with a collar 66 of a sleeve 68 for taking up play.
  • This sleeve 68 has a threaded part 70 which is screwed, for taking up play, in a thread of the tilting support 72.
  • the end of the sleeve comprises a thread 74 intended for the connection of a water outlet pipe. It is noted in FIG. 6 that the rotation of the end piece, for example using a hexagonal protruding key which penetrates the end of the end piece close to the thread 74, allows the sleeve to be driven in rotation and thus its cooperation by screwing with the tilting support 72.
  • This device is used in the following manner.
  • the nut 60 is screwed onto the counter 34 so that it holds the sleeve 68 against the seal 64, but it is not completely tightened, so that the sleeve 68 can rotate relative to the counter and to the 'nut, sliding on the seal 64.
  • the tilting support 72 has rotated 90 ° to the right in Figure 6, the sleeve 68 is introduced into the support 72, the thread 74 passing through the thread 70 of the support 72. Then, the sleeve 68 is screwed so that the counter 34 is brought closer to the tilting support 72.
  • the counter 34 is then rotated 90 ° so that its other end is presented to the tap 32.
  • the tap 32 has a nut which has a clearance similar to the clearance 62 indicated in FIG. 6.
  • the sleeve 68 By rotation of the sleeve 68 , using a key penetrating the end of this nozzle, the latter is rotated in the direction which brings the counter to the tap 32.
  • This movement allows the end of the counter to be applied against the tap joint 32, by introduction in translation in the clearance of the nut of this valve.
  • the nut 60 is finished blocking, for example by rotation of a quarter turn, and the valve nut 32 is also blocked.
  • the assembly is then ready to be used, and the game has been caught up.
  • the clearance take-up movement be greater than the length of the clearance 62 of the nut 60 and the nut of valve 32, but less than the sum of this clearance and the safety stroke of the valve nut 32, so that the device does not allow separation of the counter without triggering of the safety valve nut 32.
  • the backlash stroke is anyway less than 15 mm and preferably of the order of 3 to 5 mm.
  • Figures 3 to 5 show a variant of the connection device shown in Figure 1.
  • the first is the realization of a groove 50 which extends the groove 24 of the nut and is a little deeper.
  • the second modification is a clearance 52 between the groove 18 and the body of the socket 16 of the end piece.
  • the third modification is the use of an elastic ring 54 which, instead of being a simple circular elastic ring working in clamping, has a slightly triangular shape so that it works both by clamping inwards, in three parts, and by clamping outwardly, in three other intermediate parts.
  • the nut pushes the ring and comes to take its tightening position wherein the shoulder 22 is in contact with the collar 20 of the nozzle.
  • the elastic ring 54 has been retained by the end of the clearance 52 so that it has fallen into the rear groove 50 (which forms a first groove part of the nut) and is retained in it.
  • the groove 50 drives the ring 54 up to what it is in the right of the throat 18 and falls in this one.
  • the ring 54 has a triangular shape, it may simply have an oval shape or on the contrary may have a polygonal shape with more than three sides, for example with four sides.
  • the valve of the embodiment described is of the straight or direct flow type, this characteristic is not essential; in fact, the tap can be of any type, for example square, as long as its mounting on the console prevents it from moving away from the meter.
  • the invention has been described with reference to particular types of seals, more specifically in the form of flat washers, those skilled in the art know other methods of sealing, for example with a paste or using O-rings, which give the same result, with an obvious adaptation well known to the device.
  • the invention has specific applications in the technical field of water supply to homes.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Volume Flow (AREA)

Abstract

The invention concerns a meter and tap on a bracket assembly, comprising an assembly including a bracket (30), a meter (34) a tap (32) and a screwed fitting comprising a male threaded end and a nut. The fitting is of the pin and nut coupling type whereof the nut, when it is unscrewed, moves back to a position wherein it is locked and cannot be screwed on again, and the meter and the tap are mounted on the bracket (30) such that they cannot be spaced apart from each other in the direction of the axis of the fitting after they have been positioned in connection. The assembly is produced by tilting the meter positioned in a pivoting support (42) and whereof the position is adjusted by a ring (44) made inaccessible when the fitting is clamped on. The invention is applicable to domestic water meters.

Description

Procédé de raccordement, ensemble à compteur et robinet sur console , et raccord pour sa mise en oeuyre La présente invention concerne un procédé destiné à rendre inviolable le raccordement d'un robinet d'arrivée de fluide à un compteur, un ensemble anti-fraude à compteur et robinet d'arrivée, et un raccord anti-fraude, destinés à être utilisés pour la mesure de quantités de fluide . The present invention relates to a method intended to make the connection of a fluid inlet valve to a counter tamper-proof, an anti-fraud assembly to meter and inlet valve, and an anti-fraud connection, intended to be used for the measurement of quantities of fluid.
Bien que l'invention ait des applications à n'importe quel luide , et notamment à n ' importe quel liquide , on la décrit dans la suite dans son application au raccordement de première prise ou divisionnaire d'un compteur d'eau d'usager à la conduite du distributeur d'eau ou de l'installation privée d ' alimentation en eau .Although the invention has applications to any fluid, and in particular to any liquid, it is described below in its application to the connection of the first outlet or division of a user water meter to the water distributor or the private water supply installation.
Il est fréquent que des usagers peu scrupuleux séparent le raccord existant entre un robinet d'arrivée d'eau, indispensable pour isoler le circuit d'une habitation, et un compteur. Il arrive même que cette séparation ne soit réalisée que pendant un temps limité, par exemple le temps de remplir une piscine . Compte tenu du préjudice important que subissent les compagnies d'alimentation en eau, on a cherché à rendre inviolable le raccordement du robinet d'arrivée d'eau et du compteur.It is common for unscrupulous users to separate the existing connection between a water supply tap, essential to isolate the circuit of a home, and a meter. It even happens that this separation is only carried out for a limited time, for example the time to fill a swimming pool. In view of the significant damage suffered by water supply companies, attempts have been made to make the connection of the water supply tap and the meter inviolable.
On connaît ainsi, d'après le document WO 97 01 530, un raccord "anti-fraude" (ou "inviolable") qui comporte un embout terminé par un collet et un écrou destiné à tourner sur l'embout et appliqué contre le collet dans la position raccordée ; l'embout a une gorge cachée par l'écrou aussi bien en position raccordée qu'en position libérée, et l'écrou a une gorge qui loge une bague élastique qui s'enclenche dans la gorge de l'embout lorsqu'elle vient en regard de cette gorge à la fin du desserrage de l'écrou.There is thus known, from document WO 97 01 530, an "anti-fraud" (or "tamper-proof") connector which comprises a nozzle terminated by a collar and a nut intended to turn on the nozzle and applied against the collar in the connected position; the end piece has a groove hidden by the nut both in the connected position and in the released position, and the nut has a groove which houses an elastic ring which engages in the throat of the end piece when it comes in look at this groove at the end of the loosening of the nut.
Ce raccord, bien qu'il constitue une solution intéressante, présente deux inconvénients. Le premier est qu'il est possible de desserrer l'écrou juste suffisamment pour que la bague élastique ne tombe pas dans la gorge de l'embout et de déconnecter cependant le raccord et 1 ' embout . Bien que cette manoeuvre soit délicate, elle n'est pas impossible. Le second inconvénient présenté par le raccord précité est qu'il est tout à fait possible de dévisser l'écrou sans l'éloigner du collet, en écartant le compteur du robinet, si bien que la bague élastique ne peut pas tomber dans la gorge de l'embout. Il est donc facile de raccorder à nouveau le compteur .This connection, although it constitutes an interesting solution, has two drawbacks. The first is that it is possible to loosen the nut just enough so that the elastic ring does not fall into the groove of the end piece and yet disconnect the fitting and the end piece. Although this maneuver is delicate, it is not impossible. The second drawback presented by the aforementioned connection is that it is quite possible to unscrew the nut without moving it away from the collar, moving the counter away from the tap, so that the elastic ring cannot fall into the groove in the end piece. It is therefore easy to reconnect the meter.
L'invention a pour objet de remédier à ces inconvénients , d ' une part en empêchant cet écartement du compteur et du robinet, et d'autre part à l'aide d'un raccord antifraude qui ne présente pas le premier inconvénient précité. L'invention a donc pour objet un procédé destiné à rendre inviolable le raccordement d'un robinet et d'un compteur dans lequel 1 ' écartement du compteur et du robinet pendant le desserrage du raccord est interdit.The object of the invention is to remedy these drawbacks, on the one hand by preventing this separation of the meter and the tap, and on the other hand by means of an anti-fraud connection which does not have the first aforementioned drawback. The subject of the invention is therefore a process intended to make the connection of a tap and a counter tamper-proof, in which the spacing of the counter and the tap during the loosening of the fitting is prohibited.
Plus précisément, l'invention concerne un procédé destiné à rendre inviolable le raccordement d'un robinet d'arrivée d'un fluide à un compteur de fluide par un raccord vissé qui comprend, sur le robinet ou le compteur, un bout mâle fileté et, sur le compteur ou le robinet respectivement, un écrou qui peut tourner autour d'un axe du raccord sur un embout muni d'un collet de retenue de l'écrou. Selon 1 ' invention , 1 ' opération de raccordement du compteur au robinet comprend la sélection d' un raccord vissé dont l'écrou, lorsqu'il est dévissé, recule à une position dans laquelle il est piégé et ne peut plus être revissé, le positionnement du compteur et du robinet sous forme alignée dans la direction de l'axe du raccord et de manière qu'ils ne puissent pas s'écarter l'un de l'autre dans cette direction , et le serrage de 1 ' écrou sur le bout mâle .More specifically, the invention relates to a method intended to make the connection of a fluid inlet valve to a fluid meter inviolable by a screw connection which comprises, on the valve or the meter, a threaded male end and , on the meter or the tap respectively, a nut which can rotate around an axis of the fitting on a nozzle fitted with a nut retaining collar. According to the invention, the operation of connecting the meter to the tap comprises the selection of a screwed connection, the nut of which, when it is unscrewed, moves back to a position in which it is trapped and can no longer be screwed back on, the positioning of the meter and the tap in a form aligned in the direction of the axis of the fitting and in such a way that they cannot deviate from each other in this direction, and the tightening of the nut on the male end.
Dans un mode de réalisation préféré , 1 ' étape de positionnement du compteur et du robinet est réalisée par montage sur une console ayant des bras entre lesquels sont disposés le compteur et le robinet.In a preferred embodiment, the step of positioning the meter and the valve is carried out by mounting on a console having arms between which the meter and the valve are arranged.
Dans un mode de réalisation, l'étape de positionnement comprend le déplacement en translation du compteur ou du robinet au moins en direction transversale à la direction de 1 ' axe du raccord.In one embodiment, the positioning step comprises moving the meter or the valve in translation at least in a direction transverse to the direction of the axis of the fitting.
Dans un autre mode de réalisation préféré , 1 ' étape de positionnement comprend le basculement du compteur ou du robinet au moins autour d'un axe sensiblement perpendiculaire à la direction de l'axe du raccord.In another preferred embodiment, the positioning step comprises switching the counter or the tap at least around an axis substantially perpendicular to the direction of the axis of the fitting.
De préférence, la sélection d'un raccord vissé comprend la sélection d' un raccord qui peut être réarmé après que le compteur et le robinet ont été séparés .Preferably, the selection of a screw connection includes the selection of a connection which can be reset after the meter and the tap have been separated.
L'invention concerne aussi un ensemble anti-fraude à compteur et robinet d'arrivée de fluide montés sur une console, du type qui comprend une console de support ayant deux bras fixes l'un par rapport à l'autre afin qu'ils délimitent une distance fixe entre eux, un compteur monté sur la console , un robinet monté sur la console , et un raccord vissé qui comprend, sur le robinet ou le compteur, un bout mâle fileté et, sur le compteur ou le robinet respectivement, un écrou qui peut tourner autour d'un axe du raccord sur un embout muni d'un collet de retenue de l'écrou. Selon l'invention, le raccord est un raccord vissé dont l'écrou, lorsqu'il est dévissé, recule à une position dans laquelle il est piégé et ne peut plus être revissé, et le compteur et le robinet sont montés sur la console de manière qu'ils ne puissent pas être écartés l'un de l'autre dans la direction de l'axe du raccord après leur mise en position de raccordement.The invention also relates to an anti-fraud assembly with a meter and a fluid inlet valve mounted on a console, of the type which comprises a support console having two arms fixed relative to each other so that they delimit a fixed distance between them, a counter mounted on the console, a tap mounted on the console, and a screw connection which includes, on the tap or the counter, a threaded male end and, on the counter or the tap respectively, a nut which can rotate around an axis of the fitting on a nozzle fitted with a nut retaining collar. According to the invention, the fitting is a screwed fitting whose nut, when it is unscrewed, recedes to a position in which it is trapped and can no longer be screwed back on, and the counter and the tap are mounted on the console. so that they cannot be moved apart from each other in the direction of the fitting axis after they have been placed in the fitting position.
Dans un mode de réalisation, la console comporte un dispositif de guidage en translation tel que le compteur ou le robinet au moins est positionné par rapport au robinet ou au compteur respectivement par déplacement en translation en direction perpendiculaire à l'axe du raccord.In one embodiment, the console comprises a device for guiding in translation such that the counter or the tap at least is positioned relative to the tap or to the counter respectively by translational movement in the direction perpendicular to the axis of the fitting.
Dans un autre mode de réalisation préféré , la console comporte un dispositif basculant de guidage tel que le compteur ou le robinet au moins est positionné par rapport au robinet ou au compteur respectivement par basculement du compteur ou du robinet autour d' un axe sensiblement perpendiculaire à 1 ' axe du raccord et voisin d' un bras de la console . De préférence , 1 ' axe de basculement du compteur ou du robinet au moins ne recoupe pas la direction de 1 ' axe du raccord, mais est décalé par rapport à celui-ci.In another preferred embodiment, the console comprises a tilting guide device such that at least the counter or the tap is positioned relative to the tap or the counter respectively by tilting the counter or the tap around an axis substantially perpendicular to 1 axis of the fitting and adjacent to an arm of the console. Preferably, the pivot axis of the meter or of the tap at least does not overlap the direction of the axis of the fitting, but is offset relative to the latter.
De préférence , 1 ' axe de basculement du compteur ou du robinet est placé à proximité d'un bras de la console. Dans un mode de réalisation préféré , 1 ' ensemble comporte un dispositif de rattrapage de jeu pour le montage du compteur ou du robinet sur un bras respectif de console. De préférence, ce dispositif de rattrapage de jeu n'est accessible que lorsque le compteur ou le robinet respectivement est séparé de la console.Preferably, the pivot axis of the meter or of the tap is placed near an arm of the console. In a preferred embodiment, the assembly includes a backlash device for mounting the meter or the tap on a respective console arm. Preferably, this game take-up device is only accessible when the counter or the tap respectively is separated from the console.
L'invention concerne aussi un raccord anti-fraude, du type qui comporte un embout terminé par un collet, et un écrou destiné à tourner sur l'embout et appliqué contre le collet lorsque le raccord est en position raccordée, et dans lequel l'embout a une gorge cachée par l'écrou aussi bien en position de raccordement qu'en position libérée, et l'écrou a une gorge logeant une bague élastique qui s'enclenche dans la gorge de l'embout lorsqu'elle vient en regard de cette gorge. Selon l'invention, la gorge interne de l'écrou a une largeur nettement supérieure à la largeur de la bague, dans la position antérieure au raccordement, une première partie de la gorge de l'écrou est en face de la gorge de l'embout, et la bague est placée dans une seconde partie de la gorge de l'écrou qui est plus proche du collet et n'est pas en face de la gorge de l'embout, et, pendant l'opération de raccordement, la bague est déplacée dans la première partie de la gorge de l'écrou qui est la plus éloignée du collet, si bien que, après dévissage de l'écrou, la bague tenue par la première partie de la gorge de l'écrou qui est la plus éloignée du collet est amenée en face de la gorge de l'embout avant le dévissage complet de l'écrou.The invention also relates to an anti-fraud coupling, of the type which comprises a nozzle ending in a collar, and a nut intended to turn on the nozzle and applied against the collar when the coupling is in the connected position, and in which the end piece has a groove hidden by the nut both in the connection position and in the released position, and the nut has a groove housing an elastic ring which engages in the throat of the end piece when it comes opposite this throat. According to the invention, the internal groove of the nut has a width significantly greater than the width of the ring, in the position prior to the connection, a first part of the groove of the nut is opposite the groove of the end piece, and the ring is placed in a second part of the groove of the nut which is closer to the collar and is not opposite the groove of the end piece, and, during the connection operation, the ring is moved into the first part of the groove of the nut which is furthest from the collar, so that, after unscrewing the nut, the ring held by the first part of the groove of the nut which is most away from the collar is brought in front of the groove of the end piece before the nut is completely unscrewed.
Dans un mode de réalisation préféré , la gorge interne de l'écrou est plus profonde dans la première partie éloi- gnée du collet que dans la seconde partie plus proche du collet, l'embout comporte un épaulement empêchant la bague de suivre l'écrou jusqu'à sa position la plus proche du collet, et la bague élastique a une forme non circulaire afin qu'elle puisse être simultanément en contact avec 1 ' intérieur de 1 ' écrou par sa périphérie externe et avec 1 ' extérieur de 1 ' embout par sa périphérie interne . Par exemple, la bague élastique a une forme annulaire légèrement triangulaire . D ' autres caractéristiques et avantages de 1 ' invention ressortiront mieux de la description qui va suivre de l'invention, faite en référence aux dessins annexés sur lesquels : la figue 1 est une vue en élévation latérale en coupe partielle d'un robinet d'arrivée d'eau anti-fraude de type connu ; la figure 2 représente un ensemble anti-fraude selon 1 ' invention ; les figures 3, 4 et 5 sont des coupes partielles d'un raccord constituant un perfectionnement du raccord représenté sur la figure 1 ; et la figure 6 est une demi-coupe d'un raccord dans une variante de 1 ' inventio . La figure 1 représente, en coupe partielle, un robinet d'arrivée d'eau muni d'un raccord "anti-fraude" connu dans la technique. On note que le corps du robinet 10 porte une manette 12 de commande d'une clé qui ouvre ou ferme le passage d'arrivée d'eau du robinet. Du côté destiné à être raccordé au compteur, le robinet porte un raccord comprenant un embout 14 constitué d'une douille 16 vissée dans une partie taraudée du corps du robinet de manière qu ' une gorge 18 soit délimitée entre l'embout et l'extrémité du robinet. La douille 16 de l'embout se termine par un collet 20, de manière connue. Dans la position de raccordement, représentée sur la partie supérieure du raccord sur la figure 1 , un épaulement 22 formé par une collerette vient en appui contre la face arrière du collet et serre le collet contre le bout mâle fileté d ' un compteur , non représenté , avec interposition d'un joint d' étanchéité. Dans ce raccord, une gorge 24 est formée dans l'écrou en arrière de la collerette qui délimite l' épaulement 22, et loge une bague élastique 26 qui serre 1 ' embout .In a preferred embodiment, the internal groove of the nut is deeper in the first part remote from the collar than in the second part closer to the collar, the end piece has a shoulder preventing the ring from following the nut. to its position closest to the collar, and the elastic ring has a non-circular shape so that it can be simultaneously in contact with the interior of the nut by its external periphery and with the exterior of the end piece by its internal periphery. For example, the elastic ring has a slightly triangular annular shape. Other characteristics and advantages of the invention will emerge more clearly from the description which follows of the invention, given with reference to the appended drawings in which: FIG. 1 is a side elevation view in partial section of a tap. anti-fraud water supply of known type; FIG. 2 represents an anti-fraud assembly according to the invention; Figures 3, 4 and 5 are partial sections of a connector constituting an improvement of the connector shown in Figure 1; and Figure 6 is a half section of a connector in a variant of one inventio. FIG. 1 represents, in partial section, a water inlet valve provided with an "anti-fraud" connection known in the art. It is noted that the body of the tap 10 carries a handle 12 for controlling a key which opens or closes the water inlet passage from the tap. On the side intended to be connected to the meter, the tap carries a fitting comprising a nozzle 14 consisting of a socket 16 screwed into a tapped part of the body of the valve so that a groove 18 is delimited between the nozzle and the end tap. The socket 16 of the end piece ends in a collar 20, in a known manner. In the connection position, represented on the upper part of the connector in FIG. 1, a shoulder 22 formed by a collar comes to bear against the rear face of the collar and clamps the collar against the threaded male end of a meter, not shown. , with interposition of a seal. In this connection, a groove 24 is formed in the nut behind the flange which delimits the shoulder 22, and houses an elastic ring 26 which clamps the end piece.
La partie inférieure de la figure 1 indique que , après que le robinet a pris sa position de raccordement indiquée à la partie supérieure de la igure 1 , puis a été déplacé vers l'arrière pour séparer le raccord, l'écrou a amené sa gorge 24 au droit de la gorge 18 de l'embout, si bien que la bague élastique 26 est tombée dans cette gorge 18, tout en restant partiellement dans la gorge 24 de l'écrou. En conséquence , la bague empêche 1 ' écrou d' avancer vers la position indiquée en haut de la figure 1, si bien que le raccord est verrouillé en position ouverte.The lower part of figure 1 indicates that, after the tap has taken its connection position indicated in the upper part of figure 1, then has been moved backwards to separate the fitting, the nut has brought its groove 24 to the right of the throat 18 of the end piece, so that the elastic ring 26 has fallen into this groove 18, while remaining partially in the groove 24 of the nut. Consequently, the ring prevents the nut from advancing towards the position indicated at the top of FIG. 1, so that the connector is locked in the open position.
Il faut cependant noter que, pour que la bague élastique 26 ne tombe pas dans la gorge 18 de l'embout avant le raccordement, c'est-à-dire lorsque le raccord n'a pas encore été monté, une bague 28, par exemple de matière plastique, placée sur l'embout empêche l'écrou de reculer au point d'amener la bague élastique 26 au droit de la gorge 18. Après serrage de l'écrou, il est donc nécessaire que le bague 28 soit ôtée pour que l'écrou puisse ensuite suffisamment reculer pour que la bague 26 vienne se bloquer dans la gorge 18.It should however be noted that, so that the elastic ring 26 does not fall into the groove 18 of the end piece before the connection, that is to say when the connection has not yet been mounted, a ring 28, for example of plastic, placed on the end piece prevents the nut from moving back to the point of bringing the elastic ring 26 to the right of the groove 18. After tightening the nut, it is therefore necessary that the ring 28 is removed to that the nut can then move back enough so that the ring 26 comes to jam in the groove 18.
Le robinet représenté sur la figure 1 présente des avantages certains dans la mesure où il empêche un nouveau raccordement du robinet. Ainsi, si un usager a séparé le raccord et l'a mis dans sa position bloquée, il est obligé d'aviser la compagnie d'alimentation en eau pour qu'elle vienne remettre en état le raccord. Cette remise en état comprend le dévissage de la douille 16 du raccord, l'extraction de 1 ' écrou et de la bague , puis la remontée de la bague sur la douille et le revissage de la douille sur le robinet. Le raccord précité présente donc de nombreux avantages, mais il existe un moyen relativement simple pour éviter qu'il ne se verrouille. Ce moyen consiste simplement à écarter progressivement le compteur au fur et à mesure que l'écrou est dévissé, si bien que l'écrou, tout en tournant, reste dans la position représentée à la partie supérieure du raccord de la figure 1. De cette manière , la bague ne vient jamais s'enclencher dans la gorge 18, et le raccord peut être réutilisé .The valve shown in Figure 1 has certain advantages in that it prevents a new connection of the valve. Thus, if a user has separated the fitting and put it in its locked position, it is obliged to notify the water supply company so that it comes to repair the fitting. This reconditioning includes the unscrewing of the socket 16 from the fitting, the extraction of the nut and the ring, then the reassembly of the ring on the socket and the screwing of the socket on the tap. The aforementioned connection therefore has many advantages, but there is a relatively simple way to prevent it from locking. This means consists simply in gradually removing the counter as and when the nut is unscrewed, so that the nut, while rotating, remains in the position shown at the top of the connector of Figure 1. From this way, the ring never comes to engage in the groove 18, and the fitting can be reused.
L'invention a essentiellement pour objet de remédier à cette situation en évitant que le compteur puisse être écarté progressivement du robinet lors de 1 ' ouverture du raccord. A cet effet, la figure 2 représente un ensemble selon 1 ' invention . Cet ensemble comprend essentiellement une console 30, un robinet d'arrivée 32 et un compteur 34.The main object of the invention is to remedy this situation by preventing the meter from being gradually moved away from the tap when the fitting is opened. To this end, FIG. 2 represents an assembly according to the invention. This set essentially comprises a console 30, an inlet tap 32 and a counter 34.
La console 30 a une construction très rigide. Elle est représentée sous forme d'une console de tôle épaisse très résistante ayant des parties embouties lui donnant une grande rigidité afin que ses deux bras 36, 38 ne puissent pas s'écarter l'un de l'autre. Le bras 36 a une ouverture 39 qui peut être circulaire, mais qui est de préférence poly- gonale ou de toute autre forme non circulaire correspondant à la forme de 1 ' extrémité du robinet 32 afin que celui-ci ne puisse pas tourner autour de l'axe de raccordement. De cette manière, il n'est pas nécessaire de tenir le robinet 32 pour l'empêcher de tourner lorsque l'écrou du raccord est serré sur le compteur ou est desserré.The console 30 has a very rigid construction. It is represented in the form of a very resistant thick sheet metal console having stamped parts giving it great rigidity so that its two arms 36, 38 cannot be separated from one another. The arm 36 has an opening 39 which may be circular, but which is preferably polygonal or of any other non-circular shape corresponding to the shape of the end of the tap 32 so that the tap cannot rotate around the 'connecting pin. In this way, it is not necessary to hold the tap 32 to prevent it from turning when the union nut is tightened on the meter or is loose.
L ' autre bras 38 de la console délimite deux oreilles dans lesquelles peut pivoter un axe 40 d'un support pivotant 42 destiné à maintenir l'extrémité du compteur 34.The other arm 38 of the console delimits two ears in which a pin 40 of a pivoting support 42 intended to hold the end of the counter 34 can pivot.
Le support 42 peut avoir simplement une forme complé- mentaire de celle de l'extrémité du compteur afin que celui- ci soit tenu dans la direction de l'axe de raccordement. Cependant, selon un perfectionnement représenté sur la partie supérieure de la figure 2, qui est une coupe du support 42 , on note que ce support comporte un trou taraudé dans lequel peut se visser une bague 44 qui constitue une surface d ' appui contre laquelle s ' applique une sur ace complémentaire du compteur 34. Cette bague 44 n'est pas accessible de l'extérieur du support 42 et elle ne peut être vissée ou dévissée que lorsque le compteur 34 est sorti du support 42. La bague 44 qui se visse dans le trou taraudé du support 42 constitue ainsi un dispositif de rattrapage de jeu qui permet de régler la position du compteur suivant 1 ' axe de raccordement .The support 42 may simply have a shape complementary to that of the end of the counter so that the latter is held in the direction of the connection axis. However, according to an improvement shown in the upper part of Figure 2, which is a section of the support 42, it is noted that this support has a tapped hole in which can be screwed a ring 44 which constitutes a bearing surface against which s applies an additional ace to the counter 34. This ring 44 is not accessible from the outside of the support 42 and it can only be screwed or unscrewed when the counter 34 has come out of the support 42. The ring 44 which is screwed in the threaded hole of the support 42 thus constitutes a play take-up device which makes it possible to adjust the position of the counter along the connection axis.
Sur la igure 2 , on note que, lorsque le robinet 32 a été monté dans le bras 36 de la console et maintenu par un écrou placé à l'extérieur de ce bras (écrou non représenté) , le compteur 34 est monté dans le support pivotant 42 (après basculement du support 42 vers le haut) par introduction de 1 ' extrémité du compteur , puis bascule avec le support 42 autour de l'axe 40 afin que l'extrémité opposée du compteur 34 arrive juste au niveau d'un joint d'étanchéité 46 placé entre le robinet 32 et le compteur 34. Dans le montage de la figure 2 , et compte tenu de la rigidité de la console 30, lorsque le robinet 32 et le compteur 34 ont été alignés puis raccordés , leur séparation n'est possible que par ouverture du raccord placé entre eux. Rien ne permet d'écarter le compteur 34 du robinet 32. En conséquence, il est nécessaire de faire fonctionner le mécanisme à bague élastique du raccord, décrit en référence à la figure 1.In FIG. 2, it is noted that, when the tap 32 has been mounted in the arm 36 of the console and held by a nut placed outside this arm (nut not shown), the counter 34 is mounted in the support pivoting 42 (after tilting of the support 42 upwards) by introduction of 1 end of the counter, then rocks with the support 42 around the axis 40 so that the opposite end of the counter 34 arrives just at a seal 46 placed between the tap 32 and the counter 34. In the assembly of FIG. 2, and taking into account the rigidity of the console 30, when the tap 32 and the counter 34 have been aligned and then connected, their separation is only possible by opening the connector placed between them. Nothing allows the counter 34 to be moved away from the tap 32. Consequently, it is necessary to operate the elastic ring mechanism of the connector, described with reference to FIG. 1.
On a indiqué que la console 30 était formée de tôle épaisse emboutie ayant une grande rigidité. Cependant, elle peut être constituée de n'importe quel matériau donnant une grande rigidité . On peut par exemple utiliser des métaux moulés ou même des coques de matière plastique, par exemple armée de fibres de verre. Le terme "console" désigne donc un simple support qui évite 1 ' écartement du compteur et du robinet. La rigidité de cette console peut d'ailleurs être accrue par ses propres dispositifs de fixation, par exemple par des pattes scellées dans de la maçonnerie.It has been indicated that the console 30 was formed from deep drawn sheet metal having great rigidity. However, it can be made of any material giving great rigidity. One can for example use molded metals or even plastic shells, for example reinforced with glass fibers. The term "console" therefore designates a simple support which avoids the separation of the meter and the tap. The rigidity of this console can also be increased by its own fixing devices, for example by legs sealed in masonry.
On a représenté un mode de réalisation dans lequel le compteur 34 vient dans l'alignement du raccord 32 par bascu- lement du support pivotant 42 sur le bras 38 de la console. Cependant, le support pivotant peut être monté du côté du robinet et non du côté du compteur . Des raccords pivotants peuvent aussi être montés des deux côtés .An embodiment is shown in which the counter 34 comes into alignment with the connector 32 by tilting the pivoting support 42 on the arm 38 of the console. However, the swivel support can be mounted on the side of the tap and not on the side of the meter. Swivel fittings can also be mounted on both sides.
On note que l'axe de basculement 40 est écarté de l'axe d'alignement du compteur et du raccord, mais cette disposition est simplement destinée à faciliter la mise en position du compteur par basculement contre le joint 46. Il est aussi possible que l'axe de basculement recoupe l'axe du raccord ou s ' en écarte différemment . En outre, au lieu d'une mise en place par basculement, il est possible d'utiliser une mise en place par déplacement latéral en translation, par exemple par guidage du compteur 34 le long d'un bras 38 qui a alors une glissière prévue à cet effet.Note that the tilting axis 40 is spaced from the alignment axis of the meter and the connector, but this arrangement is simply intended to facilitate the positioning of the meter by tilting against the seal 46. It is also possible that the tilting axis intersects with the axis of the fitting or deviates from it differently. In addition, instead of positioning by tilting, it is possible to use positioning by lateral displacement in translation, for example by guiding the counter. 34 along an arm 38 which then has a slide provided for this purpose.
Quel que soit le procédé utilisé pour la mise en place, la caractéristique importante selon l'invention est que, lorsque le robinet et le compteur sont dans 1 ' alignement l'un de l'autre, il n'est pas possible de les écarter l'un de 1 ' autre suivant 1 ' axe d ' alignement .Whatever the method used for the establishment, the important characteristic according to the invention is that, when the tap and the meter are in alignment with one another, it is not possible to separate them one of the other along the axis of alignment.
On a représenté un dispositif de rattrapage de jeu incorporé au support pivotant 42 sous forme d'une bague qui se visse dans un trou taraudé. Cependant, le dispositif de rattrapage de jeu peut être monté de l'autre côté, c'est-à- dire du côté du robinet, ou des dispositifs de rattrapage de jeu peuvent être montés des deux côtés. La caractéristique importante selon l'invention est que ce dispositif de rattrapage de jeu, qui permet le réglage de la longueur suivant l'axe d'alignement, ne soit pas accessible lorsque le robinet et le compteur sont raccordés 1 ' un à 1 ' autre .There is shown a backlash device incorporated in the pivoting support 42 in the form of a ring which is screwed into a tapped hole. However, the play take-up device can be mounted on the other side, i.e. on the tap side, or play take-up devices can be mounted on both sides. The important characteristic according to the invention is that this backlash device, which allows the adjustment of the length along the alignment axis, is not accessible when the tap and the meter are connected 1 'to 1' another .
Dans le mode de réalisation décrit en référence à la igure 2 , lorsque le compteur 34 bascule avec le support 42 autour de l'axe 40, l'extrémité du compteur 34 arrive juste au niveau du joint d'étanchéité 46 placé entre le robinet 32 et le compteur 34. Il faut donc que le dégagement de l'écrou du robinet 32 soit réduit pour que le positionnement se fasse contre le joint en direction transversale. La figure 6 représente une variante qui permet d'éviter ce phénomène . En outre , cette variante permet 1 ' utilisation d ' un dégagement normal au bout du taraudage de 1 ' écrou du robinet 32.In the embodiment described with reference to FIG. 2, when the counter 34 switches with the support 42 around the axis 40, the end of the counter 34 comes just at the seal 46 placed between the tap 32 and the counter 34. It is therefore necessary that the clearance of the nut of the valve 32 is reduced so that the positioning is made against the seal in the transverse direction. FIG. 6 represents a variant which makes it possible to avoid this phenomenon. In addition, this variant allows the use of normal clearance at the end of the thread of the valve nut 32.
Plus précisément, comme l'indique la figure 6, le support basculant 42 est remplacé par un autre support basculant 72. Un écrou 60, qui possède un dégagement 62 avant le début de son taraudage, coopère, avec interposition d'un joint d'étanchéité 64, avec un collet 66 d'un manchon 68 de rattrapage de jeu. Ce manchon 68 comporte une partie filetée 70 qui se visse, pour le rattrapage du jeu, dans un taraudage du support basculant 72. L'extrémité du manchon comporte un filetage 74 destiné au raccordement d'une tuyauterie de sortie d ' eau . On note sur la figure 6 que la rotation de l'embout, par exemple à 1 ' aide d'une clé à saillie hexagonale qui pénètre à l'extrémité de l'embout proche du filetage 74, permet l'entraînement en rotation du manchon et ainsi sa coopération par vissage avec le support basculant 72.More precisely, as indicated in FIG. 6, the tilting support 42 is replaced by another tilting support 72. A nut 60, which has a clearance 62 before the start of its tapping, cooperates, with the interposition of a gasket sealing 64, with a collar 66 of a sleeve 68 for taking up play. This sleeve 68 has a threaded part 70 which is screwed, for taking up play, in a thread of the tilting support 72. The end of the sleeve comprises a thread 74 intended for the connection of a water outlet pipe. It is noted in FIG. 6 that the rotation of the end piece, for example using a hexagonal protruding key which penetrates the end of the end piece close to the thread 74, allows the sleeve to be driven in rotation and thus its cooperation by screwing with the tilting support 72.
Ce dispositif est utilisé de la manière suivante. L'écrou 60 est vissé sur le compteur 34 afin qu'il maintienne le manchon 68 contre le joint d'étanchéité 64, mais il n'est pas complètement serré, si bien que le manchon 68 peut tourner par rapport au compteur et à l'écrou, en glissant sur le joint d'étanchéité 64. Après que le support basculant 72 a tourné de 90° vers la droite sur la figure 6, le manchon 68 est introduit dans le support 72, le filetage 74 passant dans le taraudage 70 du support 72. Ensuite, le manchon 68 est vissé afin que le compteur 34 soit rapproché du support basculant 72.This device is used in the following manner. The nut 60 is screwed onto the counter 34 so that it holds the sleeve 68 against the seal 64, but it is not completely tightened, so that the sleeve 68 can rotate relative to the counter and to the 'nut, sliding on the seal 64. After the tilting support 72 has rotated 90 ° to the right in Figure 6, the sleeve 68 is introduced into the support 72, the thread 74 passing through the thread 70 of the support 72. Then, the sleeve 68 is screwed so that the counter 34 is brought closer to the tilting support 72.
Le compteur 34 est alors tourné de 90° afin que son autre extrémité soit présentée au robinet 32. Dans ce cas , le robinet 32 a un écrou qui possède un dégagement analogue au dégagement 62 indiqué sur la figure 6. Par rotation de du manchon 68, à l'aide d'une clé pénétrant à l'extrémité de cet embout, ce dernier est tourné dans le sens qui rapproche le compteur du robinet 32. Ce déplacement permet l'application de l'extrémité du compteur contre le joint du robinet 32 , par introduction en translation dans le dégagement de l'écrou de ce robinet. Lorsque le compteur a été ainsi positionné, on finit de bloquer l'écrou 60, par exemple par rotation d'un quart de tour, et l'écrou du robinet 32 est aussi bloqué. L'ensemble est alors prêt à être utilisé, et le jeu a été rattrapé.The counter 34 is then rotated 90 ° so that its other end is presented to the tap 32. In this case, the tap 32 has a nut which has a clearance similar to the clearance 62 indicated in FIG. 6. By rotation of the sleeve 68 , using a key penetrating the end of this nozzle, the latter is rotated in the direction which brings the counter to the tap 32. This movement allows the end of the counter to be applied against the tap joint 32, by introduction in translation in the clearance of the nut of this valve. When the counter has been thus positioned, the nut 60 is finished blocking, for example by rotation of a quarter turn, and the valve nut 32 is also blocked. The assembly is then ready to be used, and the game has been caught up.
Bien qu'on n'ait pas indiqué de restrictions au déplacement du manchon 68 dans le support basculant 72, il est souhaitable que le déplacement de rattrapage de jeu soit supérieur à la longueur du dégagement 62 de l'écrou 60 et de 1 ' écrou du robinet 32 , mais inférieur à la somme de ce dégagement et de la course de sécurité de 1 ' écrou du robinet 32 , afin que le dispositif ne permette pas une séparation du compteur sans déclenchement de 1 ' écrou du robinet de sécurité 32.Although no restrictions have been indicated on the movement of the sleeve 68 in the tilting support 72, it is desirable that the clearance take-up movement be greater than the length of the clearance 62 of the nut 60 and the nut of valve 32, but less than the sum of this clearance and the safety stroke of the valve nut 32, so that the device does not allow separation of the counter without triggering of the safety valve nut 32.
En pratique, il est souhaitable que la course de rattrapage de jeu soit de toute manière inférieure à 15 mm et de préférence de l'ordre de 3 à 5 mm.In practice, it is desirable that the backlash stroke is anyway less than 15 mm and preferably of the order of 3 to 5 mm.
Bien qu'on ait décrit un exemple particulier de dispositif de rattrapage de jeu, des variantes sont possibles. Ainsi, à la place de l'entraînement en rotation de l'embout 68 par une clé à saillie hexagonale pénétrant à l'extrémité du raccord, il est aussi possible, lorsque l'épaisseur du métal du manchon 68 le permet, de former des plats permettant 1 ' entraînement direct en rotation par une clé plate .Although a particular example of a play take-up device has been described, variants are possible. Thus, in place of the rotational driving of the end piece 68 by a hexagonal projection key penetrating the end of the fitting, it is also possible, when the thickness of the metal of the sleeve 68 allows it, to form dishes allowing direct drive in rotation by a flat wrench.
Les figures 3 à 5 représentent une variante du dispo- sitif de raccordement représenté sur la figure 1. Par rapport à la réalisation de la figure 1 , trois modifications sont apportées. La première est la réalisation d'une gorge 50 qui prolonge la gorge 24 de l'écrou et est un peu plus profonde. La seconde modification est un dégagement 52 entre la gorge 18 et le corps de la douille 16 de l'embout. La troisième modification est l'utilisation d'une bague élastique 54 qui, au lieu d'être une simple bague élastique circulaire travaillant au serrage , a une forme légèrement triangulaire de manière qu ' elle travaille à la fois par serrage vers l'intérieur, dans trois parties, et par serrage vers 1 ' extérieur , dans trois autres parties intermédiaires .Figures 3 to 5 show a variant of the connection device shown in Figure 1. Compared to the embodiment of Figure 1, three modifications are made. The first is the realization of a groove 50 which extends the groove 24 of the nut and is a little deeper. The second modification is a clearance 52 between the groove 18 and the body of the socket 16 of the end piece. The third modification is the use of an elastic ring 54 which, instead of being a simple circular elastic ring working in clamping, has a slightly triangular shape so that it works both by clamping inwards, in three parts, and by clamping outwardly, in three other intermediate parts.
Depuis la position initiale représentée sur la figureFrom the initial position shown in the figure
3, dans laquelle la bague 54 est à côté de la gorge 18 de l'embout et dans le gorge 24 (qui forme une seconde partie de gorge de l'écrou) , l'écrou pousse la bague et vient prendre sa position de serrage dans laquelle l' épaulement 22 est au contact du collet 20 de l'embout. Dans cette position représentée sur la figure 2, la bague élastique 54 a été retenue par l'extrémité du dégagement 52 si bien qu'elle est tombée dans la gorge arrière 50 (qui forme une première partie de gorge de 1 ' écrou) et est retenue dans celle-ci . Lors du desserrage, la gorge 50 entraîne la bague 54 jusqu'à ce qu'elle se trouve au droit de la gorge 18 et tombe dans celle-ci .3, in which the ring 54 is next to the groove 18 of the end piece and in the groove 24 (which forms a second groove part of the nut), the nut pushes the ring and comes to take its tightening position wherein the shoulder 22 is in contact with the collar 20 of the nozzle. In this position shown in FIG. 2, the elastic ring 54 has been retained by the end of the clearance 52 so that it has fallen into the rear groove 50 (which forms a first groove part of the nut) and is retained in it. Upon loosening, the groove 50 drives the ring 54 up to what it is in the right of the throat 18 and falls in this one.
Sur la igure 5 , 1 ' embout et 1 ' écrou ont exactement la même disposition que sur la figure 3 , mais la bague a été introduite à force dans la gorge 18 de l'embout et empêche donc l'avance de l'écrou vers la droite sur la figure 5. Par rapport au système de la figure 1 , il n ' est donc pas possible de faire reculer l'écrou jusqu'à la position de la figure 3, sans que la bague ne tombe dans la gorge 18 puisque la bague a déjà été placée dans la gorge 50.In FIG. 5, the end piece and the nut have exactly the same arrangement as in FIG. 3, but the ring has been forced into the groove 18 of the end piece and therefore prevents the nut from advancing towards the right in Figure 5. Compared to the system of Figure 1, it is therefore not possible to reverse the nut to the position of Figure 3, without the ring falling into the groove 18 since the ring has already been placed in the groove 50.
Bien qu ' on ait indiqué que la bague 54 avait une forme triangulaire, elle peut avoir simplement une forme ovale ou au contraire peut avoir une forme polygonale à plus de trois côtés , par exemple à quatre côtés . Bien que le robinet du mode de réalisation décrit soit du type droit ou à passage direct, cette caractéristique n'est pas indispensable ; en effet, le robinet peut être de type quelconque, par exemple d'équerre, du moment que son montage sur la console empêche son éloignement du compteur . Bien qu'on ait décrit l'invention en référence à des types particuliers de joints d'étanchéité, plus précisément sous forme de rondelles plates , les hommes du métier connaissent d'autres procédés de raccordement étanche, par exemple avec une pâte ou à l'aide de joints toriques, qui donnent le même résultat, avec une adaptation évidente bien connue du dispositif .Although it has been indicated that the ring 54 has a triangular shape, it may simply have an oval shape or on the contrary may have a polygonal shape with more than three sides, for example with four sides. Although the valve of the embodiment described is of the straight or direct flow type, this characteristic is not essential; in fact, the tap can be of any type, for example square, as long as its mounting on the console prevents it from moving away from the meter. Although the invention has been described with reference to particular types of seals, more specifically in the form of flat washers, those skilled in the art know other methods of sealing, for example with a paste or using O-rings, which give the same result, with an obvious adaptation well known to the device.
L ' invention a des applications spécifiques au domaine technique de 1 ' alimentation en eau des habitations .The invention has specific applications in the technical field of water supply to homes.
Il est bien entendu que l'invention n'a été décrite et représentée qu'à titre d'exemple préférentiel et qu'on pourra apporter toute équivalence technique dans ses éléments constitutifs sans pour autant sortir de son cadre . It is understood that the invention has only been described and shown as a preferential example and that any technical equivalence may be made in its constituent elements without going beyond its ambit.

Claims

REVENDICATIONS
1. Procédé destiné à rendre inviolable le raccordement d'un robinet (32) d'arrivée d'un fluide à un compteur (34) de fluide par un raccord vissé qui comprend, sur le robinet ou le compteur, un bout mâle fileté et, sur le compteur ou le robinet respectivement, un écrou qui peut tourner autour d'un axe du raccord sur un embout (14) muni d'un collet (20) de retenue de 1 ' écrou , caractérisé en ce que 1 ' opération de raccordement du compteur au robinet comprend : la sélection d'un raccord vissé dont l'écrou, lorsqu'il est dévissé, recule à une position dans laquelle il est piégé et ne peut plus être revissé, le positionnement du compteur (34) et du robinet (32) sous forme alignée dans la direction de l'axe du raccord et de manière qu'ils ne puissent pas s'écarter l'un de l'autre dans cette direction, et le serrage de 1 ' écrou sur le bout mâle .1. A method intended to make the connection of a tap (32) for the arrival of a fluid to a fluid meter (34) tamper-proof by a screw connection which comprises, on the tap or the meter, a threaded male end and , on the meter or the tap respectively, a nut which can rotate about an axis of the fitting on a nozzle (14) provided with a collar (20) for retaining the nut, characterized in that the operation of connection of the meter to the tap includes: the selection of a screw connection whose nut, when it is unscrewed, moves back to a position in which it is trapped and can no longer be screwed back, the positioning of the meter (34) and of the tap (32) in a form aligned in the direction of the axis of the fitting and in such a way that they cannot deviate from one another in this direction, and the tightening of the nut on the male end .
2. Procédé selon la revendication 1 , caractérisé en ce que l'étape de positionnement du compteur et du robinet est réalisée par montage sur une console (30) ayant des bras (36, 38) entre lesquels sont disposés le compteur et le robinet .2. Method according to claim 1, characterized in that the step of positioning the counter and the tap is carried out by mounting on a console (30) having arms (36, 38) between which the counter and the tap are arranged.
3. Procédé selon 1 ' une des revendications 1 et 2 , caractérisé en ce que l'étape de positionnement comprend le basculement du compteur ou du robinet au moins autour d'un axe sensiblement perpendiculaire à la direction de 1 ' axe du raccord.3. Method according to one of claims 1 and 2, characterized in that the positioning step comprises tilting the meter or the tap at least around an axis substantially perpendicular to the direction of the axis of the fitting.
4. Procédé selon 1 ' une quelconque des revendications précédentes , caractérisé en ce que la sélection d' un raccord vissé comprend la sélection d'un raccord qui peut être réarmé après que le compteur et le robinet ont été séparés .4. Method according to any one of the preceding claims, characterized in that the selection of a screw connection comprises the selection of a connection which can be reset after the meter and the tap have been separated.
5. Ensemble anti-fraude à compteur et robinet d'arrivée de fluide montés sur une console , du type qui comprend : une console (30) de support ayant deux bras (36, 38) fixes l'un par rapport à l'autre afin qu'ils délimitent une distance fixe entre eux, un compteur (34) monté sur la console, un robinet (32) monté sur la console, et un raccord vissé qui comprend, sur le robinet ou le compteur, un bout mâle fileté et, sur le compteur ou le robinet respectivement, un écrou qui peut tourner autour d'un axe du raccord sur un embout (14) muni d'un collet (20) de retenue de l'écrou, caractérisé en ce que le raccord est un raccord vissé dont l'écrou, lorsqu'il est dévissé, recule à une position dans laquelle il est piégé et ne peut plus être revissé, et le compteur et le robinet sont montés sur la console5. Counter fraud and fluid inlet valve assembly mounted on a console, of the type which comprises: a support console (30) having two arms (36, 38) fixed relative to one another so that they delimit a fixed distance between them, a counter (34) mounted on the console, a tap (32) mounted on the console, and a screw connection which comprises, on the tap or the meter, a threaded male end and, on the meter or the tap respectively, a nut which can turn around an axis of the fitting on a nozzle (14) provided with a collar (20) for retaining the nut, characterized in that the fitting is a screwed fitting whose nut, when it is unscrewed, retreats to a position in which it is trapped and can no longer be re-tightened, and the counter and the tap are mounted on the console
(30) de manière qu'ils ne puissent pas être écartés l'un de l'autre dans la direction de l'axe du raccord après leur mise en position de raccordement.(30) so that they cannot be separated from one another in the direction of the axis of the connector after they have been placed in the connection position.
6. Ensemble selon la revendication 5 , caractérisé en ce que la console (30) comporte un dispositif basculant de guidage tel que le compteur (34) ou le robinet (32) au moins est positionné par rapport au robinet ou au compteur respectivement par basculement du compteur ou du robinet autour d' un axe sensiblement perpendiculaire à 1 ' axe du raccord et voisin d'un bras de la console.6. Assembly according to claim 5, characterized in that the console (30) comprises a tilting guide device such that the counter (34) or the tap (32) at least is positioned relative to the tap or to the counter respectively by tilting of the meter or of the tap around an axis substantially perpendicular to the axis of the fitting and adjacent to an arm of the console.
7. Ensemble selon la revendication 6, caractérisé en ce que 1 ' axe de basculement du compteur ou du robinet au moins ne recoupe pas la direction de l'axe du raccord, mais est décalé par rapport à celui-ci. 7. An assembly according to claim 6, characterized in that one axis of tilting of the meter or the tap at least does not intersect the direction of the axis of the fitting, but is offset with respect thereto.
8. Ensemble selon l'une quelconque des revendications8. An assembly according to any one of claims
5 à 7 , caractérisé en ce que il comporte un dispositif de rattrapage de jeu (44, 68—70) pour le montage du compteur ou du robinet sur un bras respectif de console.5 to 7, characterized in that it includes a backlash device (44, 68—70) for mounting the meter or the tap on a respective console arm.
9. Raccord anti-fraude, du type qui comporte un embout (14) terminé par un collet (20) , et un écrou destiné à tourner sur 1 ' embout et appliqué contre le collet lorsque le raccord est en position raccordée, et dans lequel l'embout (14) a une gorge (18) cachée par l'écrou aussi bien en position de raccordement qu'en position libérée, et l'écrou a une gorge (24) logeant une bague élastique qui s'enclenche dans la gorge de l'embout lorsqu'elle vient en regard de cette gorge , caractérisé en ce que la gorge interne de l'écrou (24, 50) a une largeur nettement supérieure à la largeur de la bague, dans la position antérieure au raccordement, une première partie (50) de la gorge de l'écrou est en face de la gorge (18) de l'embout, et la bague (54) est placée dans une seconde partie (24) de la gorge de l'écrou qui est plus proche du collet (20) et n'est pas en face de la gorge (18) de l'embout, et pendant l'opération de raccordement, la bague (54) est déplacée dans la première partie (50) de la gorge de l'écrou qui est la plus éloignée du collet, si bien que, après dévissage de l'écrou, la bague (54) tenue par la première partie (50) de la gorge de l'écrou qui est la plus éloignée du collet est amenée en face de la gorge (18) de l'embout avant le dévissage complet de9. Anti-fraud connection, of the type which comprises a nozzle (14) terminated by a collar (20), and a nut intended to turn on the nozzle and applied against the collar when the connector is in the connected position, and in which the end piece (14) has a groove (18) hidden by the nut both in the connection position and in the released position, and the nut has a groove (24) housing an elastic ring which engages in the groove of the nozzle when it comes opposite this groove, characterized in that the internal groove of the nut (24, 50) has a width markedly greater than the width of the ring, in the position prior to connection, a first part (50) of the groove of the nut is in face of the groove (18) of the end piece, and the ring (54) is placed in a second part (24) of the groove of the nut which is closer to the collar (20) and is not opposite from the groove (18) of the end piece, and during the connection operation, the ring (54) is moved into the first part (50) of the groove of the nut which is furthest from the collar, so that, after unscrewing the nut, the ring (54) held by the first part (50) of the groove of the nut which is furthest from the collar is brought opposite the groove (18) of the end piece before the complete unscrewing of
1 ' écrou .1 nut.
10. Raccord selon la revendication 9, caractérisé en ce que la gorge de l'écrou est plus profonde dans la première partie (50) éloignée du collet que dans la seconde partie (24) plus proche du collet, l'embout (14) comporte un épaulement empêchant la bague (54) de suivre l'écrou jusqu'à sa position la plus proche du collet, et la bague élastique10. A connector according to claim 9, characterized in that the groove of the nut is deeper in the first part (50) remote from the collar than in the second part (24) closer to the collar, the end piece (14) has a shoulder preventing the ring (54) from following the nut to its position closest to the collar, and the elastic ring
(54) a une forme non circulaire afin qu'elle puisse être simultanément en contact avec l'intérieur de l'écrou par sa périphérie externe et avec l'extérieur de l'embout (14) par sa périphérie interne . (54) has a non-circular shape so that it can be simultaneously in contact with the interior of the nut by its external periphery and with the exterior of the end piece (14) by its internal periphery.
PCT/FR2000/000563 1999-03-08 2000-03-07 Connection method, meter and tap on a bracket assembly for implementing same WO2000053856A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU31728/00A AU3172800A (en) 1999-03-08 2000-03-07 Connection method, meter and tap on a bracket assembly for implementing same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9902825A FR2790815B1 (en) 1999-03-08 1999-03-08 CONNECTION METHOD, METER ASSEMBLY AND TAP ON CONSOLE, AND CONNECTION FOR IMPLEMENTING IT
FR99/02825 1999-03-08

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WO2000053856A1 true WO2000053856A1 (en) 2000-09-14

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FR (1) FR2790815B1 (en)
WO (1) WO2000053856A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1235058A1 (en) * 2001-02-27 2002-08-28 Solyd Connecting device for a flowmeter in a metering and delivering station of a fluid
US7259229B2 (en) 2001-05-07 2007-08-21 E.I. Du Pont De Nemours And Company Electroactive fluorene polymers having perfluoralkyl groups, process for preparing such polymers and devices made with such polymers

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Publication number Priority date Publication date Assignee Title
DE2349441A1 (en) * 1973-10-02 1975-04-10 Beul & Co Geb Water meter connection for existing duct - has elbows with inserted valves with adjacent cones
US4852403A (en) * 1987-04-21 1989-08-01 Bednarz James W Water meter lock
US4993260A (en) * 1989-06-20 1991-02-19 Bednarz James W Universal expansion connection and integral lock
DE19500848C1 (en) * 1995-01-13 1996-08-14 Stadtwerke Luedenscheid Gmbh Adaptor fitting for emergency supply of water house connection
WO1998009107A1 (en) * 1996-08-27 1998-03-05 Philippe Lorenzo Fraud-proof pipe connection in particular for water metres

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Publication number Priority date Publication date Assignee Title
PT848701E (en) 1995-06-27 2000-10-31 Novartis Ag O-BENZYL OXYME ETERE DERIVATIVES AND ITS USE IN COMPOSITIONS FOR PROTECTION OF CULTURES

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2349441A1 (en) * 1973-10-02 1975-04-10 Beul & Co Geb Water meter connection for existing duct - has elbows with inserted valves with adjacent cones
US4852403A (en) * 1987-04-21 1989-08-01 Bednarz James W Water meter lock
US4993260A (en) * 1989-06-20 1991-02-19 Bednarz James W Universal expansion connection and integral lock
DE19500848C1 (en) * 1995-01-13 1996-08-14 Stadtwerke Luedenscheid Gmbh Adaptor fitting for emergency supply of water house connection
WO1998009107A1 (en) * 1996-08-27 1998-03-05 Philippe Lorenzo Fraud-proof pipe connection in particular for water metres

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1235058A1 (en) * 2001-02-27 2002-08-28 Solyd Connecting device for a flowmeter in a metering and delivering station of a fluid
FR2821425A1 (en) * 2001-02-27 2002-08-30 Solyd DEVICE FOR CONNECTING A METER TO A FLUID METERING AND DELIVERY STATION
US7259229B2 (en) 2001-05-07 2007-08-21 E.I. Du Pont De Nemours And Company Electroactive fluorene polymers having perfluoralkyl groups, process for preparing such polymers and devices made with such polymers

Also Published As

Publication number Publication date
FR2790815B1 (en) 2001-04-27
AU3172800A (en) 2000-09-28
FR2790815A1 (en) 2000-09-15

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