FR2803364A1 - Antirotation device for connectors for hoses and gas cylinders comprises lever with orifice whose top has parallel sides cooperating with flat sides on nozzle and bottom has diameter greater than connecting ring between nozzle and hose - Google Patents

Antirotation device for connectors for hoses and gas cylinders comprises lever with orifice whose top has parallel sides cooperating with flat sides on nozzle and bottom has diameter greater than connecting ring between nozzle and hose Download PDF

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Publication number
FR2803364A1
FR2803364A1 FR0000249A FR0000249A FR2803364A1 FR 2803364 A1 FR2803364 A1 FR 2803364A1 FR 0000249 A FR0000249 A FR 0000249A FR 0000249 A FR0000249 A FR 0000249A FR 2803364 A1 FR2803364 A1 FR 2803364A1
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FR
France
Prior art keywords
nozzle
hose
pipe
connecting ring
hoses
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.)
Granted
Application number
FR0000249A
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French (fr)
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FR2803364B1 (en
Inventor
Thierry Colcombet
P Louis Escoffier
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MR Industries SA
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MR Industries SA
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Priority to FR0000249A priority Critical patent/FR2803364B1/en
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Application granted granted Critical
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Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L35/00Special arrangements used in connection with end fittings of hoses, e.g. safety or protecting devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints 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
    • F16L19/005Joints 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 comprising locking means for the threaded member

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

Abstract

The antirotation device is fitted to a connector at the end of a gas hose. The connector consists of an internally threaded cap mounted so that it can rotate freely on a nozzle (4) with flattened sides (10). A retaining lever (12) is fitted on to the nozzle which has an orifice in the shape of a buttonhole (13). The top section has parallel sides (14a, 14b) which cooperate with the flat sides of the nozzle. The bottom section (15) has a diameter which is greater than the widest part of a connecting ring between the nozzle and the gas hose.

Description

L'invention est relative à un dispositif antirotation pour raccords extrêmes de tuyaux pour gaz ou fluide. The invention relates to an anti-rotation device for extreme connections of pipes for gas or fluid.

Elle concerne plus particulièrement les tuyaux dans lesquels les deux raccords extrêmes sont composés chacun d'un organe de liaison, monté libre en rotation par rapport à un embout d'étanchéité solidaire du tuyau. It relates more particularly to pipes in which the two end fittings are each composed of a connecting member, mounted to rotate freely relative to a sealing end piece integral with the pipe.

Cette construction se rencontre, par exemple dans les lyres utilisées pour relier l'embout fileté d'une bouteille de gaz à l'embout fileté d'un réseau d'alimentation ou d'un inverseur précédant le détendeur d'un réseau d'alimentation. Dans ce cas, chacune des extrémités du tuyau, en caoutchouc ou élastomère, est solidaire par sertissage d'un embout métallique tubulaire dont le collet extrême porte un joint et retient, par son autre côté, une douille- écrou, filetée intérieurement. This construction is encountered, for example in lyres used to connect the threaded end of a gas cylinder to the threaded end of a supply network or of an inverter preceding the regulator of a supply network. . In this case, each end of the hose, made of rubber or elastomer, is secured by crimping a tubular metal end-piece whose end collar carries a seal and retains, by its other side, a sleeve-nut, internally threaded.

Pour éviter, à la fin du serrage de la douille-écrou sur un embout fileté, que le couple de serrage de l'écrou se transmette au tuyau et lui communique une torsion, temporaire ou permanente, pouvant le détériorer, des normes ou règles administratives imposent que l'un des organes de connexion soit équipé d'un dispositif antirotation. To avoid, at the end of tightening of the nut-sleeve on a threaded end, that the tightening torque of the nut is transmitted to the pipe and communicates to it a torsion, temporary or permanent, which can deteriorate it, standards or administrative rules require that one of the connection members be equipped with an anti-rotation device.

Le dispositif le plus simple est composé d'un levier diamétral de retenue qui est lié en rotation à l'embout de l'organe de connexion, par un trou axial de section transversale complémentaire de celle de l'embout, par exemple de forme cylindrique avec des méplats opposés. The simplest device is composed of a diametrical retaining lever which is linked in rotation to the end piece of the connection member, by an axial hole of cross section complementary to that of the end piece, for example of cylindrical shape. with opposite flats.

Si le poseur prend soin de connecter en dernier l'organe de connexion équipé du levier, et maintient ce levier pendant la transmission du couple de serrage sur la douille écrou, le tuyau n'est soumis à aucune torsion. Par contre, s'il inverse l'ordre de connexion et connecte en premier l'organe équipé du levier, il ne peut plus se servir de ce levier lors de la connexion de la dernière extrémité du tuyau, qui peut alors être soumise à une torsion pouvant le détériorer. If the installer takes care to connect the connection member equipped with the lever last, and maintains this lever during the transmission of the tightening torque to the nut sleeve, the pipe is not subjected to any twisting. On the other hand, if it reverses the connection order and first connects the member equipped with the lever, it can no longer use this lever when connecting the last end of the pipe, which can then be subjected to a torsion which can damage it.

A cet inconvénient, s'ajoute celui de la présence permanente du levier de retenue près de la zone de raccordement, puisque le déplacement en translation de ce levier est limité à la longueur des méplats de l'embout, et ne permet pas de l'éloigner beaucoup de la douille-écrou, par exemple pour dégager l'appareil sur l'embout duquel il est raccordé. To this drawback is added that of the permanent presence of the retaining lever near the connection area, since the translational movement of this lever is limited to the length of the flats of the end piece, and does not allow the move a lot away from the nut-holder, for example to release the device on the end of which it is connected.

La présente invention a pour but de remédier à ces inconvénients en fournissant un dispositif mettant en ceuvre un levier de retenue équipé d'une découpe pouvant coopérer avec le profil extérieur méplaté de l'embout tubulaire de l'organe de connexion. The present invention aims to remedy these drawbacks by providing a device using a retaining lever equipped with a cutout which can cooperate with the flattened outer profile of the tubular end piece of the connection member.

Selon l'invention, la découpe 2 ménagée dans le levier de retenue est composée d'une partie en forme de boutonnière, à bords parallèles, aptes à coopérer avec les méplats parallèles de chaque embout d'un tuyau, et d'une partie cylindrique, communiquant avec la boutonnière et dont le diamètre intérieur est supérieur à celui de la partie de plus grand diamètre des moyens assurant la liaison du tuyau avec les embouts. According to the invention, the cutout 2 formed in the retaining lever is composed of a part in the form of a buttonhole, with parallel edges, capable of cooperating with the parallel flats of each end of a pipe, and of a cylindrical part. , communicating with the buttonhole and whose internal diameter is greater than that of the part of larger diameter of the means ensuring the connection of the pipe with the end fittings.

Grâce à cet agencement, par rapport au profil méplaté de chaque embout, le levier de retenue peut occuper deux positions, une position dans laquelle sa partie en forme de boutonnière coopère avec les méplats et permet d'assurer la retenue lors du serrage de la douille-écrou juxtaposée et une position dans laquelle c'est sa partie cylindrique qui entoure un profil méplaté et peut donc être déplacée longitudinalement sur cette partie sur les moyens de raccordement de l'embout au tuyau et sur le tuyau, soit pour dégager le raccord extrême, soit pour être amenée vers l'autre raccord. Thanks to this arrangement, with respect to the flat profile of each end piece, the retaining lever can occupy two positions, a position in which its button-shaped part cooperates with the flats and makes it possible to ensure the retention when tightening the sleeve. -juxtaposed nut and a position in which it is its cylindrical part which surrounds a flat profile and can therefore be moved longitudinally on this part on the means of connection of the end piece to the pipe and on the pipe, either to release the extreme connection , or to be brought to the other connection.

Ce dispositif simple et peu onéreux reste prisonnier du tuyau mais peut cependant se déplacer sur lui en fonction des besoins. This simple and inexpensive device remains trapped in the pipe but can however move on it as needed.

L'invention sera mieux comprise à l'aide de la description qui suit en référence au dessin schématique annexé. The invention will be better understood with the aid of the description which follows with reference to the appended schematic drawing.

Figure 1 est une vue de côté en élévation, avec coupe partielle, d'un tuyau équipé du dispositif antirotation selon l'invention, Figure 2 est une vue en coupe suivant II-II montrant, à échelle agrandie, la forme d'exécution du levier selon l'invention. Figure 1 is a side elevation view, with partial section, of a pipe equipped with the anti-rotation device according to the invention, Figure 2 is a sectional view along II-II showing, on an enlarged scale, the embodiment of the lever according to the invention.

A la figure 1, la référence numérique 2 désigne un tuyau en caoutchouc élastomère ou autre matière, utilisé pour le transport d'un fluide sous pression, et en particulier de gaz. 3a, 3b désignant les organes de connexion extrêmes composés chacun d'un embout 4 et d'une douille écrou 5. L'embout 4 est de forme tubulaire et est emmanché dans l'extrémité libre du tuyau 2 où il est maintenu par une bague de sertissage 6. A son autre extrémité, l'embout est équipé d'un collet 7 juxtaposé à une portée 8 recevant un joint 9. Entre le collet 7 et la bague sertie 6, l'embout présente une section cylindrique méplatée, c'est-à-dire comportant deux méplats parallèles et opposés 10. La douille écrou 5 comporte un filetage intérieur 5a et est prisonnière entre le tuyau et le collet 7, mais par contre est montée libre en rotation sur l'embout 4. In FIG. 1, the reference numeral 2 designates a hose made of elastomer rubber or other material, used for the transport of a pressurized fluid, and in particular of gas. 3a, 3b designating the extreme connection members each composed of a tip 4 and a nut socket 5. The tip 4 is of tubular shape and is fitted into the free end of the pipe 2 where it is held by a ring crimping 6. At its other end, the end piece is equipped with a collar 7 juxtaposed to a bearing surface 8 receiving a seal 9. Between the collar 7 and the crimped ring 6, the end piece has a flat cylindrical section, c ' that is to say comprising two parallel and opposite flats 10. The nut socket 5 has an internal thread 5a and is trapped between the pipe and the collar 7, but on the other hand is mounted to rotate freely on the endpiece 4.

Selon l'invention, le tuyau 2 est associé à un dispositif antirotation composé d'un unique levier 12 traversé par une découpe en deux parties, à savoir, une partie 13 en forme de boutonnière s'enfourchant par ses bords parallèles 14a, 14b sur les méplats 10 de l'un des embouts du tuyau, et une partie cylindrique 15 dont la dimension diamétrale intérieure D est supérieure à la dimension diamétrale d des douilles 6 serties sur le tuyau 2. According to the invention, the pipe 2 is associated with an anti-rotation device composed of a single lever 12 traversed by a cut into two parts, namely, a part 13 in the form of a buttonhole straddling by its parallel edges 14a, 14b on the flats 10 of one of the end pieces of the pipe, and a cylindrical part 15 whose internal diametral dimension D is greater than the diametrical dimension d of the sockets 6 crimped onto the pipe 2.

Ainsi, grâce à la partie 15 de sa découpe, le même levier 12 peut être déplacé longitudinalement sur le tuyau pour venir sur l'un ou l'autre des embouts des deux organes de connexion. Lorsqu'il est sur un organe de connexion choisi, ses bords 14a, 14b de sa découpe 13 viennent en contact avec les méplats et permettent d'assurer la retenue de l'embout 4 et de l'extrémité correspondante du tuyau pendant l'opération de vissage ou de dévissage de la douille écrou 5 sur l'embout mâle fileté d'un organe récepteur.Thus, thanks to the part 15 of its cut, the same lever 12 can be moved longitudinally on the pipe to come on one or the other of the ends of the two connection members. When it is on a chosen connection member, its edges 14a, 14b of its cutout 13 come into contact with the flats and make it possible to retain the end piece 4 and the corresponding end of the pipe during the operation. screwing or unscrewing the nut sleeve 5 on the male threaded end of a receiving member.

Claims (1)

REVENDICATIONCLAIM 1. Dispositif antirotation pour raccords extrêmes de tuyaux pour gaz ou fluide, dans lequel chaque raccord comprend un organe de connexion (5) monté libre en rotation sur un embout tubulaire (4), ledit embout comportant deux méplats opposés (10) aptes à coopérer avec les bords d'une découpe ménagée dans un levier de retenue (12), caractérisé en ce que la découpe ménagée dans le levier de retenue (12) est composée d'une partie (13) en forme de boutonnière, à bords parallèles (14a, 14b), aptes à coopérer avec les méplats parallèles (10) de chaque embout (4) d'un tuyau, et d'une partie cylindrique (15) communiquant avec la boutonnière (13) et dont le diamètre intérieur (D) est supérieur à celui (d) de la partie de plus grand diamètre des moyens (6) assurant la liaison du tuyau (2) avec les embouts (4).1. Anti-rotation device for extreme connections of pipes for gas or fluid, in which each connection comprises a connection member (5) mounted freely in rotation on a tubular end piece (4), said end piece comprising two opposite flats (10) able to cooperate with the edges of a cutout formed in a retaining lever (12), characterized in that the cutout formed in the retaining lever (12) is composed of a part (13) in the form of a buttonhole, with parallel edges ( 14a, 14b), capable of cooperating with the parallel flats (10) of each end piece (4) of a pipe, and of a cylindrical part (15) communicating with the buttonhole (13) and whose internal diameter (D) is greater than that (d) of the part of larger diameter of the means (6) ensuring the connection of the pipe (2) with the end pieces (4).
FR0000249A 2000-01-04 2000-01-04 ANTI-ROTATION DEVICE FOR EXTREME PIPE CONNECTIONS FOR GASES OR FLUIDS Expired - Fee Related FR2803364B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0000249A FR2803364B1 (en) 2000-01-04 2000-01-04 ANTI-ROTATION DEVICE FOR EXTREME PIPE CONNECTIONS FOR GASES OR FLUIDS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0000249A FR2803364B1 (en) 2000-01-04 2000-01-04 ANTI-ROTATION DEVICE FOR EXTREME PIPE CONNECTIONS FOR GASES OR FLUIDS

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FR2803364A1 true FR2803364A1 (en) 2001-07-06
FR2803364B1 FR2803364B1 (en) 2002-09-27

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796925A (en) * 1987-09-11 1989-01-10 Fred Zwicker Safety retainer clip
US5222768A (en) * 1992-07-31 1993-06-29 Micron Technology, Inc. Fluid line nut locking device
US5362111A (en) * 1993-09-24 1994-11-08 Vsi Corporation Anti-rotation locking device for preventing separation of coupling nuts from fluid lines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796925A (en) * 1987-09-11 1989-01-10 Fred Zwicker Safety retainer clip
US5222768A (en) * 1992-07-31 1993-06-29 Micron Technology, Inc. Fluid line nut locking device
US5362111A (en) * 1993-09-24 1994-11-08 Vsi Corporation Anti-rotation locking device for preventing separation of coupling nuts from fluid lines

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FR2803364B1 (en) 2002-09-27

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