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WO1998058204A1 - Device for sealed connection between a metal tube joining piece and a flexible pipe, and method for making same - Google Patents

Device for sealed connection between a metal tube joining piece and a flexible pipe, and method for making same Download PDF

Info

Publication number
WO1998058204A1
WO1998058204A1 PCT/FR1998/001283 FR9801283W WO9858204A1 WO 1998058204 A1 WO1998058204 A1 WO 1998058204A1 FR 9801283 W FR9801283 W FR 9801283W WO 9858204 A1 WO9858204 A1 WO 9858204A1
Authority
WO
WIPO (PCT)
Prior art keywords
insert
washer
tube
shoulder
pipe
Prior art date
Application number
PCT/FR1998/001283
Other languages
French (fr)
Inventor
Daniel Baron
Original Assignee
Manuli Auto France
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 Manuli Auto France filed Critical Manuli Auto France
Publication of WO1998058204A1 publication Critical patent/WO1998058204A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
    • F16L33/20—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members
    • F16L33/207—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose

Definitions

  • the present invention relates to a sealed connection device between an end portion of a metal tube end piece and the end of a flexible pipe, by crimping the end portion on the pipe end, the end portion being in the form of sleeve of larger diameter than the rest of the tube to which it is connected by a conical shoulder, the device being of the type comprising a rigid insert hollowed out end to end by a bore, said insert comprising on one side a tubular part inserted by force in the end of the pipe opposite the crimped portion of the terminal part, and on the other side a tubular end fitting inserted with friction in the pipe fitting beyond the conical shoulder, 1 insert comprising axial abutment means against the shoulder.
  • It also relates to a method of manufacturing such a sealed connection device.
  • this device does not overcome the need to manufacture a relatively expensive insert due to the amount of material required for its production.
  • the present invention aims to provide a connection device, and a method for manufacturing a connection device, which meets the requirements of practice better than those previously known, in particular in that it allows simple, rapid and repetitive manufacture, with great flexibility of adaptation, in that it guarantees optimum crushing of the flexible material pipe without damaging it, and this making it possible to obtain an excellent seal of the connection device, all with good resistance to vibrations over time, at a lower cost.
  • the present invention proposes in particular a sealed connection device between an end portion of a metal tube end piece and the end of a flexible pipe, by crimping the end portion on the end of the pipe, the device being of the type defined above, characterized in that the axial abutment means against the conical shoulder comprise a washer in the form of a cylindrical disc only in contact with the conical shoulder by means of the peripheral edge of said washer and the face opposite to said shoulder abuts against the end of the flexible pipe.
  • slice is meant the peripheral edge located on the side of the tube.
  • the wafer can also, in certain embodiments, include the areas immediately located on one side and / or on either side of this peripheral edge, or even encompassing the peripheral edge of the face of the washer located on the side of the pipe, the wafer thus comprising for example a horizontal part, and / or a vertical edge of the wafer directly adjacent to the edge, for example over 1 to 3 mm.
  • the tubular end piece of the insert is forcefully inserted into the tube over a determined length.
  • the determined length is greater than about 1 cm, for example 2 cm, or between 1/4 and 1/10 of the length of the tubular part inserted in the pipe, preferably between 1/5 and 1/8, for example around 1/6.
  • the washer is attached and locked axially on the insert.
  • the washer is in abutment on a shoulder of the insert on the side of the tube.
  • She can also be fixed to the insert, for example by gluing;
  • the washer is made of a material different from that of the insert.
  • the washer may be made of aluminum;
  • the washer is made of the same material as the end of a metal tube, for example and advantageously made of aluminum alloy; - the washer is thin.
  • small thickness is meant a thickness of between 1 mm and 5 mm, for example 3 mm;
  • the tubular end piece inserted by force into one end of rigid tube comprises sealing means by joint;
  • the tubular part of the insert inserted by force into the flexible pipe includes sealing means by joint;
  • the end of the metal tube, on the side of the tube and beyond the conical shoulder comprises a first part of diameter d into which is inserted the end of the tubular end of the insert, and a second part of diameter ___.
  • ⁇ d constituting for example the rest of the tube;
  • the tubular end piece of the insert comprises a first cylindrical part adjacent to the washer, located between said washer and the base of the conical shoulder, with a first external diameter slightly greater than the internal diameter of the tube located beyond the shoulder, and a second cylindrical part, of a second external diameter smaller than the first diameter, introduced frictionally into said tube;
  • the sealing means by seal include special seals obtained by overmolding with adhesion to the insert;
  • the sealing means by seal comprise at least one annular groove fitted with an O-ring seal, -
  • the tube is made of aluminum alloy and the insert is made of steel;
  • the external wall of the tubular part of the insert inserted by force into the end of the pipe comprises several grooves or annular grooves so that the adhesion to the pipe relative to the external crimping is increased.
  • the invention also relates to a method of manufacturing a sealed connection device between an end portion of a metal tube end piece and the end of a flexible pipe, by crimping said end portion on said pipe end, in which: it deforms said end portion to give it a form of socket by constituting a conical shoulder joining the socket with the rest of the tube, a nozzle is introduced with friction into said end portion beyond the shoulder tubular end provided with a seal belonging to an insert hollowed out end to end by a cylindrical bore, said insert being provided with abutment means with the shoulder, - the other tubular end of the insert is force-fitted in the end of the pipe, and the bushing part is crimped onto the pipe, characterized in that the abutment means are formed beforehand with the shoulder by inserting a washer on the insert until bringing it in axial locking position on said insert.
  • Figure 1 is a longitudinal sectional view showing an embodiment of the metal tube end of the device according to the invention, before crimping.
  • FIG. 2 is a longitudinal sectional view of the embodiment of the device according to the invention, with the tip of Figure 1, after crimping.
  • Figures 1 and / or 2 show a device 1 for sealed connection between a nozzle 2 of rigid tube 3 for example made of aluminum and the end 4 of a flexible pipe 5, made of composite material.
  • the pipe 5 consists of a cylindrical elastomeric outer casing 6, for example rubber, and a cylindrical core 7, of rigid material such as, for example, a plastic material known under the name NYLON.
  • the pipe has no rigid core and / or has an intermediate cylindrical braid.
  • the end piece 2 is widened at its end portion 8 to form with its internal face a shoulder 9 of frustoconical shape, between the nominal inside diameter of the tube and up to a diameter between 1.1 and 2.5 times the inside diameter , for example between 1.5 times and 2 times the nominal inside diameter of the tube.
  • the enlargement is for example obtained by passing several punches, for example three passes or successive stages.
  • the half taper angle of the frustoconical part is for example between about 20 ° and about 40 °, for example about 30 °, as shown in Figure 1.
  • this enlargement is carried out over a length of the endpiece between 20 mm and 60 mm, for example over 40 mm, to constitute a part 10 in the form of a socket, formed in one piece with the rest of the tube.
  • the device 1 also includes a rigid insert 11 made of steel or reinforced polymer, hollowed out from end to end by a cylindrical bore 12.
  • the insert comprises on one side a tubular end fitting 13 comprising a first cylindrical part 14 of diameter d and a second cylindrical part 15 of smaller diameter inserted with friction and / or in force into the initially undeformed part 16 of the tube 3 of determined internal diameter or for example of slightly enlarged section compared to the nominal internal bore of the rest of tube 3.
  • the first part 14 is slightly larger in diameter, for example 1 mm, than that of the internal diameter of said part 16. It is a few millimeters in length, for example of the order of
  • the second part 15, for example connected to the part 14 by a chamfer, is for example 1 cm in length and comprises an annular peripheral groove 17 provided with an O-ring 18.
  • the device comprises an attached washer 20 in the form of a flat, annular disc, of cylindrical shape, for example of aluminum, in contact with the conical shoulder 9 via of the peripheral section 21 of its face 22, located on the side of the tubular end piece 13.
  • the diameter of the first part of the tubular end piece 14 is also slightly greater, for example by 1 mm or 2 mm, than the external diameter of the tubular part 23 located on the other side of the washer and on which the annular washer is for example forcefully introduced during assembly.
  • the washer is pierced with an internal cylindrical bore substantially of the same diameter as the part 23 located directly near the first part 14. The washer therefore abuts on the shoulder thus formed between the parts 14 and 23.
  • the tubular part 23 is also inserted by force into the end 4 of the pipe 5 until it abuts on the face 24 of the washer 20 perpendicular to the axis 25 of the device.
  • the washer 20, which can advantageously be glued to the insert, is therefore sandwiched between the end 4 of the pipe and the upper zone of the conical shoulder in contact with the edge 21 of the washer.
  • Part 23 includes several grooves, for example five fir-tail grooves (not shown) to facilitate adhesion of the pipe, an annular groove 26 equipped with an O-ring 27 and / or special HNBR, butyl or equivalent seals, directly obtained by overmolding with adhesion to the steel support formed by the external wall of the insert and / or several round grooves 28.
  • five fir-tail grooves (not shown) to facilitate adhesion of the pipe
  • annular groove 26 equipped with an O-ring 27 and / or special HNBR, butyl or equivalent seals, directly obtained by overmolding with adhesion to the steel support formed by the external wall of the insert and / or several round grooves 28.
  • the insert is for example machined either by turning or by rolling from tubes before being fitted with sealing systems by O-rings or special seals as has just been described.
  • the configuration chosen also allows great flexibility in adapting the device.
  • the shape of the steel insert can be worked differently depending on the pipe to be connected, for example with tail grooves fir, round gorges, slot gorges, etc.
  • the elastomer material of the seals can be adapted according to the products to be conveyed.
  • the device according to the invention can be declined, here again in a simple and adaptable manner, in all the known standard dimensions (in millimeters): 5/16, 13/32, 1/2, 5/8, 3/4, to from standard market tubes with diameters: 9.52; 12.7; 15.88; 19.05 or for millimeter diameter tubes: 10, 13, 16, 20 mm. Finally, a crimping, for example with three or four teeth, of the part 10 in the form of a socket on the end 4 of the flexible pipe 5 is produced.
  • the washer 20 is in fact blocked on the other side by the shoulder 9, in which the said washer bites, for example only by its peripheral edge 21 '.
  • the grooves 23 increase the adhesion of the pipe with respect to the external crimping. We will now describe the process for manufacturing the device 1 with reference to FIG. 2.
  • the end portion 10 of the tube end piece is enlarged, for example by punching or hardening, the washer 20 is placed in axial abutment which is fixed for example on the insert 11 by gluing, then introduces the insert by force into the tube until the washer comes into abutment by its edge 21 on the shoulder 9 of the sleeve, the insert 11 having been previously prepared with its seals 18 and 27.
  • the pipe is then forcefully introduced onto the tube until it abuts against the face 24 of the washer 20 and it is crimped.
  • the insert is made of rigid molded plastic material and / or reinforced
  • the tube is made of steel or of a metal other than aluminum or an aluminum alloy
  • the flexible hose is for example reinforced by reinforcements and / or comprises an external protective envelope
  • those where there is further provided a fixing by bonding of the insert to the tube and those in which the tubular part of the insert introduced into the pipe extends substantially beyond the crimped part.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Sealing Devices (AREA)

Abstract

The invention concerns a device and a method for making a device (1) for sealed connection between a rigid tube (3) joining piece and a flexible pipe (4) end (4), by crimp connecting a part in the form of a metal socket on the end. The rigid tube joining piece comprises an end part including a shoulder (9) with diameter greater than the tube. It comprises a rigid insert (11) hollowed out from end to end by a cylindrical bore, comprising on one side a tubular part inserted with friction in the pipe end, and on the other side a part (13) provided with a washer (20) in the form of a cylindrical disk only in contact with the shoulder by the edge.

Description

DISPOSITIF DE RACCORDEMENT ETANCHE ENTRE UN EMBOUT DE TUBE METALLIQUE ET L'EXTREMITE D'UN TUYAU SOUPLE, ET PROCEDE DE FABRICATION D'UN TEL DISPOSITIF.DEVICE FOR SEALED CONNECTION BETWEEN A METAL TUBE TIP AND THE END OF A FLEXIBLE PIPE, AND METHOD FOR MANUFACTURING SUCH A DEVICE.
La présente invention concerne un dispositif de raccordement étanche entre une partie terminale d'un embout de tube métallique et l'extrémité d'un tuyau souple, par sertissage de la partie terminale sur l'extrémité de tuyau, la partie terminale étant en forme de douille de plus grand diamètre que le reste du tube auquel elle est raccordée par un épaulement conique, le dispositif étant du type comportant un insert rigide évidé de bout en bout par un alésage, ledit insert comprenant d'un côté une partie tubulaire insérée en force dans l'extrémité du tuyau en vis à vis de la portion sertie de la partie terminale, et de l'autre côté un embout d'extrémité tubulaire inséré avec frottement dans l'embout de tube au-delà de l'épaulement conique, 1 ' insert comprenant des moyens de butée axiale contre 1 ' épaulement .The present invention relates to a sealed connection device between an end portion of a metal tube end piece and the end of a flexible pipe, by crimping the end portion on the pipe end, the end portion being in the form of sleeve of larger diameter than the rest of the tube to which it is connected by a conical shoulder, the device being of the type comprising a rigid insert hollowed out end to end by a bore, said insert comprising on one side a tubular part inserted by force in the end of the pipe opposite the crimped portion of the terminal part, and on the other side a tubular end fitting inserted with friction in the pipe fitting beyond the conical shoulder, 1 insert comprising axial abutment means against the shoulder.
Elle concerne également un procédé de fabrication d'un tel dispositif de raccordement étanche.It also relates to a method of manufacturing such a sealed connection device.
Elle trouve une application particulièrement importante bien que non exclusive dans le domaine des raccordements de circuits refroidisseurs, de circuits de climatisation et/ou de systèmes de direction assistée de véhicule automobile. On connaît déjà des dispositifs de raccordement étanche entre un embout de tube rigide et un tuyau souple en élastomère mettant en oeuvre un insert .It finds a particularly important, although not exclusive, application in the field of connections for cooling circuits, air conditioning circuits and / or motor vehicle power steering systems. There are already known sealed connection devices between a rigid tube end piece and a flexible elastomer pipe using an insert.
On connaît par exemple (US-A-3 479 713 ; US-A-5 370 425) des dispositifs comportant des embouts avec inserts soudés qui sont compliqués à mettre en oeuvre notamment du fait du soudage.There are known for example (US-A-3,479,713; US-A-5,370,425) devices comprising end caps with welded inserts which are complicated to implement in particular due to welding.
On connaît aussi (US 3,690,703) un système de raccordement de deux tuyaux souples en élastomère avec insert intermédiaire et manchons de sertissage double qui présente une solidité discutable.There is also known (US 3,690,703) a system for connecting two flexible elastomer pipes with intermediate insert and double crimp sleeves which has questionable strength.
Les dispositifs connus présentent donc des inconvénients .The known devices therefore have drawbacks.
De plus, ils ne garantissent pas toujours une bonne étanchéité notamment lorsqu'ils sont utilisés avec certains fluides frigorigènes , comme par exemple avec du liquide connu sous la référence 134a + huileIn addition, they do not always guarantee a good seal, especially when used with certain refrigerants, such as for example with liquid known under the reference 134a + oil.
PAG.PAG.
Par ailleurs, les constructeurs automobiles ne cessent de relever leurs exigences concernant la résistance à l'usure et aux conditions d'environnement difficiles des dispositifs de raccordement utilisés sur leurs véhicules.In addition, car manufacturers are constantly raising their requirements regarding the resistance to wear and harsh environmental conditions of the connection devices used on their vehicles.
Ainsi les systèmes connus à ce jour ne permettent notamment pas de conserver une étanchéité suffisante lors d'essais d'endurance qui peuvent comporter plus de 150.000 cycles de fonctionnement à des températures pouvant varier entre -35°C et +150°C. On connaît également (FR2-737-276) un dispositif qui permet d'éliminer une partie de ces inconvénients .Thus the systems known to date do not in particular make it possible to maintain a sufficient seal during endurance tests which may include more than 150,000 operating cycles at temperatures which may vary between -35 ° C and + 150 ° C. A device is also known (FR2-737-276) which makes it possible to eliminate some of these drawbacks.
Néanmoins, ce dispositif ne s'affranchit pas de la nécessité de fabriquer un insert relativement coûteux du fait de la quantité de matière nécessitée pour sa réalisation.However, this device does not overcome the need to manufacture a relatively expensive insert due to the amount of material required for its production.
La présente invention vise à fournir un dispositif de raccordement, et un procédé de fabrication d'un dispositif de raccordement, répondant mieux que ceux antérieurement connus aux exigences de la pratique, notamment en ce qu'elle permet une fabrication simple, rapide et répétitive, avec une grande souplesse d'adaptation, en ce qu'elle garantit un écrasement optimum du tuyau en matière souple sans l'endommager, et ce en permettant d'obtenir une excellente étanchéité du dispositif de raccordement, le tout avec une bonne tenue aux vibrations dans le temps, pour un coût moindre. Dans ce but la présente invention propose notamment un dispositif de raccordement étanche entre une partie terminale d'un embout de tube métallique et l'extrémité d'un tuyau souple, par sertissage de la partie terminale sur l'extrémité de tuyau, le dispositif étant du type ci-dessus défini, caractérisé en ce que les moyens de butée axiale contre l'épaulement conique comprennent une rondelle en forme de disque cylindrique uniquement en contact avec l'épaulement conique par l'intermédiaire de la tranche périphérique de ladite rondelle et dont la face opposée audit épaulement est en butée contre l'extrémité du tuyau souple.The present invention aims to provide a connection device, and a method for manufacturing a connection device, which meets the requirements of practice better than those previously known, in particular in that it allows simple, rapid and repetitive manufacture, with great flexibility of adaptation, in that it guarantees optimum crushing of the flexible material pipe without damaging it, and this making it possible to obtain an excellent seal of the connection device, all with good resistance to vibrations over time, at a lower cost. For this purpose, the present invention proposes in particular a sealed connection device between an end portion of a metal tube end piece and the end of a flexible pipe, by crimping the end portion on the end of the pipe, the device being of the type defined above, characterized in that the axial abutment means against the conical shoulder comprise a washer in the form of a cylindrical disc only in contact with the conical shoulder by means of the peripheral edge of said washer and the face opposite to said shoulder abuts against the end of the flexible pipe.
Par tranche, il faut entendre l'arête périphérique située du côté du tube. La tranche peut également, dans certains modes de réalisation, comprendre les zones immédiatement situées d'un côté et/ou de part et d'autre de cette arête périphérique, voire englobant l'arête périphérique de la face de la rondelle située du côté du tuyau, la tranche comportant ainsi et par exemple une partie horizontale, et/ou un bord vertical de la tranche directement adjacent à l'arête, par exemple sur 1 à 3 mm. Avantageusement l'embout d'extrémité tubulaire de 1 ' insert est inséré en force dans le tube sur une longueur déterminée.By slice is meant the peripheral edge located on the side of the tube. The wafer can also, in certain embodiments, include the areas immediately located on one side and / or on either side of this peripheral edge, or even encompassing the peripheral edge of the face of the washer located on the side of the pipe, the wafer thus comprising for example a horizontal part, and / or a vertical edge of the wafer directly adjacent to the edge, for example over 1 to 3 mm. Advantageously, the tubular end piece of the insert is forcefully inserted into the tube over a determined length.
La longueur déterminée est supérieure à de l'ordre de 1 cm, par exemple 2 cm, ou comprise entre le 1/4 et le 1/10 de la longueur de la partie tubulaire insérée dans le tuyau, de préférence entre le 1/5 et le 1/8, par exemple de l'ordre du 1/6.The determined length is greater than about 1 cm, for example 2 cm, or between 1/4 and 1/10 of the length of the tubular part inserted in the pipe, preferably between 1/5 and 1/8, for example around 1/6.
Dans des modes de réalisation avantageux, on a de plus recours à l'une et/ou à l'autre des dispositions suivantes :In advantageous embodiments, use is made of one and / or the other of the following arrangements:
- la rondelle est rapportée et bloquée axialement sur 1 ' insert .- The washer is attached and locked axially on the insert.
Avantageusement la rondelle est en butée sur un épaulement de 1 ' insert du côté du tube. Elle peut également être fixée à l' insert, par exemple par collage ;Advantageously, the washer is in abutment on a shoulder of the insert on the side of the tube. She can also be fixed to the insert, for example by gluing;
- la rondelle est en matière différente de celle de 1 ' insert . Par exemple si 1 ' insert est en acier, la rondelle peut être en aluminium ;- The washer is made of a material different from that of the insert. For example if the insert is made of steel, the washer may be made of aluminum;
- la rondelle est dans la même matière que l'embout de tube métallique, par exemple et avantageusement en alliage d'aluminium; - la rondelle est de faible épaisseur.- The washer is made of the same material as the end of a metal tube, for example and advantageously made of aluminum alloy; - the washer is thin.
Par faible épaisseur, il faut entendre une épaisseur comprise entre 1 mm et 5 mm, par exemple 3 mm ;By small thickness is meant a thickness of between 1 mm and 5 mm, for example 3 mm;
- l'embout d'extrémité tubulaire inséré en force dans 1 ' embout de tube rigide comprend des moyens d' étanchéité par joint ;- The tubular end piece inserted by force into one end of rigid tube comprises sealing means by joint;
- la partie tubulaire de 1 ' insert insérée en force dans le tuyau souple comporte des moyens d' étanchéité par joint ;- The tubular part of the insert inserted by force into the flexible pipe includes sealing means by joint;
- l'embout de tube métallique, du côté du tube et au- delà de l'épaulement conique, comporte une première partie de diamètre d dans laquelle est inséré l'embout d'extrémité tubulaire de l' insert, et une deuxième partie de diamètre ___.< d constituant par exemple le reste du tube; - l'embout d'extrémité tubulaire de 1 ' insert comprend une première partie cylindrique adjacente à la rondelle, située entre ladite rondelle et la base de l'épaulement conique, d'un premier diamètre externe un peu supérieur au diamètre interne du tube situé au-delà de l'épaulement, et une deuxième partie cylindrique, d'un deuxième diamètre externe inférieur au premier diamètre, introduite à frottement dans ledit tube ; - les moyens d' étanchéité par joint comportent des joints spéciaux obtenus par surmoulage avec adhérence sur 1 ' insert ;the end of the metal tube, on the side of the tube and beyond the conical shoulder, comprises a first part of diameter d into which is inserted the end of the tubular end of the insert, and a second part of diameter ___. <d constituting for example the rest of the tube; - The tubular end piece of the insert comprises a first cylindrical part adjacent to the washer, located between said washer and the base of the conical shoulder, with a first external diameter slightly greater than the internal diameter of the tube located beyond the shoulder, and a second cylindrical part, of a second external diameter smaller than the first diameter, introduced frictionally into said tube; - The sealing means by seal include special seals obtained by overmolding with adhesion to the insert;
- les moyens d' étanchéité par joint comportent au moins une gorge annulaire équipée d'un joint torique d' étanchéité ,-- the sealing means by seal comprise at least one annular groove fitted with an O-ring seal, -
- le tube est en alliage d'aluminium et 1 ' insert est en acier ;- The tube is made of aluminum alloy and the insert is made of steel;
- la paroi externe de la partie tubulaire de 1 ' insert insérée en force dans l'extrémité de tuyau comprend plusieurs cannelures ou gorges annulaires de sorte que l'adhérence au tuyau par rapport au sertissage extérieur est augmentée.- The external wall of the tubular part of the insert inserted by force into the end of the pipe comprises several grooves or annular grooves so that the adhesion to the pipe relative to the external crimping is increased.
L'invention concerne également un procédé de fabrication d'un dispositif de raccordement étanche entre une partie terminale d'un embout de tube métallique et l'extrémité d'un tuyau souple, par sertissage de ladite partie terminale sur ladite extrémité de tuyau, dans lequel : on déforme ladite partie terminale pour lui donner une forme de douille en constituant un épaulement conique de jonction de la douille avec le reste du tube, on introduit avec frottement dans ladite partie terminale au-delà de l'épaulement, un embout d'extrémité tubulaire munie d'un joint appartenant à un insert évidé de bout en bout par un alésage cylindrique, ledit insert étant muni de moyens de butée avec l'épaulement, - on introduit en force l'autre extrémité tubulaire de 1 ' insert dans l'extrémité de tuyau, et on sertit la partie formant douille sur le tuyau, caractérisé en ce que on forme au préalable les moyens de butée avec l'épaulement en introduisant sur 1 ' insert une rondelle rapportée jusqu'à l'amener en position de blocage axial sur ledit insert.The invention also relates to a method of manufacturing a sealed connection device between an end portion of a metal tube end piece and the end of a flexible pipe, by crimping said end portion on said pipe end, in which: it deforms said end portion to give it a form of socket by constituting a conical shoulder joining the socket with the rest of the tube, a nozzle is introduced with friction into said end portion beyond the shoulder tubular end provided with a seal belonging to an insert hollowed out end to end by a cylindrical bore, said insert being provided with abutment means with the shoulder, - the other tubular end of the insert is force-fitted in the end of the pipe, and the bushing part is crimped onto the pipe, characterized in that the abutment means are formed beforehand with the shoulder by inserting a washer on the insert until bringing it in axial locking position on said insert.
La présente invention sera mieux comprise à la lecture de la description qui suit d'un mode de réalisation particulier donné à titre d'exemple non limitatif .The present invention will be better understood on reading the following description of a particular embodiment given by way of non-limiting example.
Elle se réfère aux dessins qui l'accompagnent dans lesquels : - La figure 1 est une vue en coupe longitudinale montrant un mode de réalisation de l'embout de tube métallique du dispositif selon l'invention, avant sertissage .It refers to the accompanying drawings in which: - Figure 1 is a longitudinal sectional view showing an embodiment of the metal tube end of the device according to the invention, before crimping.
- La figure 2 est une vue en coupe longitudinale du mode de réalisation du dispositif selon l'invention, avec l'embout de la figure 1, après sertissage.- Figure 2 is a longitudinal sectional view of the embodiment of the device according to the invention, with the tip of Figure 1, after crimping.
Les figures 1 et/ou 2 montrent un dispositif 1 de raccordement étanche entre un embout 2 de tube rigide 3 par exemple en aluminium et l'extrémité 4 d'un tuyau 5 souple, en matériau composite.Figures 1 and / or 2 show a device 1 for sealed connection between a nozzle 2 of rigid tube 3 for example made of aluminum and the end 4 of a flexible pipe 5, made of composite material.
Le tuyau 5 est constitué d'une enveloppe externe cylindrique en élastomère 6, par exemple en caoutchouc, et d'une âme cylindrique 7, en matériau rigide comme par exemple une matière plastique connue sous la dénomination NYLON.The pipe 5 consists of a cylindrical elastomeric outer casing 6, for example rubber, and a cylindrical core 7, of rigid material such as, for example, a plastic material known under the name NYLON.
Dans d'autres modes de réalisation particuliers, le tuyau n'a pas d'âme rigide et/ou comporte une tresse cylindrique intermédiaire.In other particular embodiments, the pipe has no rigid core and / or has an intermediate cylindrical braid.
L'embout 2 est élargi à sa partie terminale 8 pour former avec sa face interne un épaulement 9 de forme tronconique, entre le diamètre intérieur nominal du tube et jusqu'à un diamètre compris entre 1,1 et 2,5 fois le diamètre intérieur, par exemple compris entre 1,5 fois et 2 fois le diamètre intérieur nominal du tube .The end piece 2 is widened at its end portion 8 to form with its internal face a shoulder 9 of frustoconical shape, between the nominal inside diameter of the tube and up to a diameter between 1.1 and 2.5 times the inside diameter , for example between 1.5 times and 2 times the nominal inside diameter of the tube.
L'élargissement est par exemple obtenu par passage de plusieurs poinçons, par exemple trois passes ou étapes successives.The enlargement is for example obtained by passing several punches, for example three passes or successive stages.
Le demi angle de conicité de la partie tronconique est par exemple compris entre de l'ordre de 20° et de l'ordre de 40°, par exemple de l'ordre de 30°, comme représenté sur la figure 1. Dans le mode de réalisation de 1 ' invention plus particulièrement décrit ici, cet élargissement est effectué sur une longueur de l'embout compris entre 20 mm et 60 mm, par exemple sur 40 mm, pour constituer une partie 10 en forme de douille, formée d'une pièce avec le reste du tube.The half taper angle of the frustoconical part is for example between about 20 ° and about 40 °, for example about 30 °, as shown in Figure 1. In the mode embodiment of the invention more particularly described here, this enlargement is carried out over a length of the endpiece between 20 mm and 60 mm, for example over 40 mm, to constitute a part 10 in the form of a socket, formed in one piece with the rest of the tube.
Le dispositif 1 comporte également un insert rigide 11 en acier ou en polymère renforcé, évidé de bout en bout par un alésage cylindrique 12. L ' insert comprend d'un côté un embout d'extrémité tubulaire 13 comprenant une première partie cylindrique 14 de diamètre d et une deuxième partie cylindrique 15 de plus petit diamètre insérée à frottement et/ou en force dans la partie 16 initialement non déformée du tube 3 de diamètre intérieur déterminé ou par exemple de section un peu élargie par rapport à l'alésage interne nominal du reste du tube 3.The device 1 also includes a rigid insert 11 made of steel or reinforced polymer, hollowed out from end to end by a cylindrical bore 12. The insert comprises on one side a tubular end fitting 13 comprising a first cylindrical part 14 of diameter d and a second cylindrical part 15 of smaller diameter inserted with friction and / or in force into the initially undeformed part 16 of the tube 3 of determined internal diameter or for example of slightly enlarged section compared to the nominal internal bore of the rest of tube 3.
La première partie 14 est de diamètre un peu supérieur, par exemple de 1 mm, à celui du diamètre interne de ladite partie 16. Elle est de quelques millimètres de longueur, par exemple de l'ordre deThe first part 14 is slightly larger in diameter, for example 1 mm, than that of the internal diameter of said part 16. It is a few millimeters in length, for example of the order of
5 mm de longueur.5 mm in length.
La deuxième partie 15, par exemple raccordée à la partie 14 par un chanfrein, est par exemple de 1 cm de longueur et comprend une gorge périphérique annulaire 17 munie d'un joint torique 18.The second part 15, for example connected to the part 14 by a chamfer, is for example 1 cm in length and comprises an annular peripheral groove 17 provided with an O-ring 18.
En cas d'insertion en force, celle-ci se fait par exemple avec un serrage compris entre 0,1 mm et 0,2 mm au diamètre.In the event of a forced insertion, this is done for example with a clamping between 0.1 mm and 0.2 mm in diameter.
Un tel montage permet d'obtenir une étanchéité renforcée, malgré le grippage attendu et les risques de coincement du joint. Selon le mode de réalisation de 1 ' invention plus particulièrement décrit ici, le dispositif comporte une rondelle rapportée 20 en forme de disque plat, annulaire, de forme cylindrique, par exemple en aluminium, en contact avec l'épaulement conique 9 par l'intermédiaire de la tranche périphérique 21 de sa face 22, située du côté de l'embout d'extrémité tubulaire 13.Such an assembly makes it possible to obtain a reinforced seal, despite the expected seizure and the risks of jamming of the seal. According to the embodiment of the invention more particularly described here, the device comprises an attached washer 20 in the form of a flat, annular disc, of cylindrical shape, for example of aluminum, in contact with the conical shoulder 9 via of the peripheral section 21 of its face 22, located on the side of the tubular end piece 13.
Le diamètre de la première partie de l'embout d'extrémité tubulaire 14 est par ailleurs légèrement supérieur, par exemple d'1 mm ou de 2 mm, au diamètre externe de la partie tubulaire 23 situé de l'autre côté de la rondelle et sur laquelle la rondelle annulaire est par exemple introduite en force lors du montage .The diameter of the first part of the tubular end piece 14 is also slightly greater, for example by 1 mm or 2 mm, than the external diameter of the tubular part 23 located on the other side of the washer and on which the annular washer is for example forcefully introduced during assembly.
La rondelle est percée d'un alésage cylindrique interne sensiblement de même diamètre que la partie 23 située directement à proximité de la première partie 14. La rondelle vient donc en butée sur l'épaulement ainsi constitué entre les parties 14 et 23.The washer is pierced with an internal cylindrical bore substantially of the same diameter as the part 23 located directly near the first part 14. The washer therefore abuts on the shoulder thus formed between the parts 14 and 23.
La partie tubulaire 23 est par ailleurs insérée en force dans l'extrémité 4 du tuyau 5 jusqu'à venir en butée sur la face 24 de la rondelle 20 perpendiculaire à l'axe 25 du dispositif.The tubular part 23 is also inserted by force into the end 4 of the pipe 5 until it abuts on the face 24 of the washer 20 perpendicular to the axis 25 of the device.
La rondelle 20, qui peut avantageusement être collée sur l' insert, est donc prise en sandwich entre 1 ' extrémité 4 du tuyau et la zone supérieure de l'épaulement conique en contact avec la tranche 21 de la rondelle.The washer 20, which can advantageously be glued to the insert, is therefore sandwiched between the end 4 of the pipe and the upper zone of the conical shoulder in contact with the edge 21 of the washer.
La partie 23 comprend plusieurs gorges par exemple cinq gorges en queue de sapin (non représentées) pour faciliter l'adhérence du tuyau, une gorge annulaire 26 équipée d'un joint torique 27 et/ou des joints spéciaux HNBR, butyle ou équivalent, directement obtenus par surmoulage avec adhérence sur le support acier constitué par la paroi externe de 1 ' insert et/ou plusieurs gorges rondes 28.Part 23 includes several grooves, for example five fir-tail grooves (not shown) to facilitate adhesion of the pipe, an annular groove 26 equipped with an O-ring 27 and / or special HNBR, butyl or equivalent seals, directly obtained by overmolding with adhesion to the steel support formed by the external wall of the insert and / or several round grooves 28.
L ' insert est par exemple usiné soit par tournage, soit par roulage à partir de tubes avant d'être équipé de systèmes d' étanchéité par joints toriques ou joints spéciaux comme cela vient d'être décrit. La possibilité de prévoir une rondelle en alliage différent de l' insert, par exemple une rondelle en aluminium pour un insert en acier, et/ou le fait que ladite rondelle constitue une butée qui n'a plus à être réalisée dans la masse de l' insert, économise ainsi de façon importante les quantités de matières utilisées .The insert is for example machined either by turning or by rolling from tubes before being fitted with sealing systems by O-rings or special seals as has just been described. The possibility of providing a different alloy washer than the insert, for example an aluminum washer for a steel insert, and / or the fact that said washer constitutes a stop which no longer has to be produced in the mass of the 'insert, thus saves significantly the quantities of materials used.
De façon surprenante, un tel dispositif ne perd cependant pas en rigidité, ni en étanchéité.Surprisingly, such a device does not, however, lose rigidity or tightness.
La configuration retenue permet par ailleurs une grande souplesse d'adaptation du dispositif.The configuration chosen also allows great flexibility in adapting the device.
En effet, la forme de 1 ' insert en acier peut être travaillée différemment en fonction du tuyau à raccorder, par exemple avec des gorges queue de sapin, des gorges rondes, des gorges en créneaux, etc .Indeed, the shape of the steel insert can be worked differently depending on the pipe to be connected, for example with tail grooves fir, round gorges, slot gorges, etc.
Elle permet une utilisation sans joint torique ou avec un seul joint ou encore plusieurs joints, sans changer le procédé général de fabrication.It allows use without an O-ring or with a single seal or even several seals, without changing the general manufacturing process.
La matière en élastomère des joints peut être adaptée en fonction des produits à véhiculer.The elastomer material of the seals can be adapted according to the products to be conveyed.
Le dispositif selon l'invention peut être décliné, ici encore de façon simple et adaptable, dans toutes les dimensions standards connues (en millimètres) : 5/16, 13/32, 1/2, 5/8, 3/4, à partir des tubes standards du marché de diamètres : 9,52 ; 12,7 ; 15,88 ; 19,05 ou pour les tubes à diamètre millimétrique : 10, 13, 16, 20 mm. Enfin, un sertissage, par exemple avec trois ou quatre dents, de la partie 10 en forme de douille sur l'extrémité 4 du tuyau souple 5 est réalisé.The device according to the invention can be declined, here again in a simple and adaptable manner, in all the known standard dimensions (in millimeters): 5/16, 13/32, 1/2, 5/8, 3/4, to from standard market tubes with diameters: 9.52; 12.7; 15.88; 19.05 or for millimeter diameter tubes: 10, 13, 16, 20 mm. Finally, a crimping, for example with three or four teeth, of the part 10 in the form of a socket on the end 4 of the flexible pipe 5 is produced.
La tenue mécanique du tuyau et de 1 ' insert à l'arrachement longitudinal, lors d'un effort de traction mécanique dû ou non à la pression, est par ailleurs assurée par ce sertissage, grâce notamment à la dent 29, qui retient 1 ' insert .The mechanical resistance of the pipe and of the insert to the longitudinal tearing, during a mechanical tensile force due or not to the pressure, is moreover ensured by this crimping, thanks in particular to the tooth 29, which retains 1 ' insert.
La rondelle 20 est en effet bloquée de l'autre côté par l'épaulement 9, dans lequel ladite rondelle mord, par exemple uniquement par son arête périphérique 21'.The washer 20 is in fact blocked on the other side by the shoulder 9, in which the said washer bites, for example only by its peripheral edge 21 '.
Les gorges 23 augmentent quant à elles l'adhérence du tuyau par rapport au sertissage extérieur. On va maintenant décrire le procédé de fabrication du dispositif 1 en référence à la figure 2.The grooves 23 increase the adhesion of the pipe with respect to the external crimping. We will now describe the process for manufacturing the device 1 with reference to FIG. 2.
On élargit tout d'abord la partie terminale 10 de l'embout de tube par exemple par poinçonnage ou écrouissage, on met en place la rondelle 20 en butée axiale que l'on fixe par exemple sur 1 ' insert 11 par collage, puis on introduit 1 ' insert en force dans le tube jusqu'à ce que la rondelle vienne en butée par sa tranche 21 sur l'épaulement 9 de la douille, 1 ' insert 11 ayant été préalablement préparé avec ses joints d' étanchéité 18 et 27.First of all, the end portion 10 of the tube end piece is enlarged, for example by punching or hardening, the washer 20 is placed in axial abutment which is fixed for example on the insert 11 by gluing, then introduces the insert by force into the tube until the washer comes into abutment by its edge 21 on the shoulder 9 of the sleeve, the insert 11 having been previously prepared with its seals 18 and 27.
Un vide de quelques même3 , de forme annulaire avec une section triangulaire, existe donc entre le bas de la rondelle et la partie inférieure de l'épaulement conique.A void of a few even3, of annular shape with a triangular section, therefore exists between the bottom of the washer and the lower part of the conical shoulder.
On introduit ensuite en force le tuyau sur le tube jusqu'à venir en butée contre la face 24 de la rondelle 20 et on sertit.The pipe is then forcefully introduced onto the tube until it abuts against the face 24 of the washer 20 and it is crimped.
Comme il va de soi et comme il résulte d'ailleurs de ce qui précède, l'invention ne se limite pas aux modes de réalisation plus particulièrement décrits.As is obvious and as it follows from the above, the invention is not limited to the embodiments more particularly described.
Elle en embrasse au contraire toutes les variantes et notamment celles où 1 ' insert est en matière plastique moulée rigide et/ou renforcée, celles où le tube est en acier ou en un autre métal que l'aluminium ou un alliage d'aluminium, celles où le tuyau souple est par exemple renforcé par des armatures et/ou comprend une enveloppe externe de protection, celles où il est prévu de plus une fixation par collage de 1 ' insert sur le tube, et celles où la partie tubulaire de 1 ' insert introduite dans le tuyau s'étend sensiblement au delà de la partie sertie. On the contrary, it embraces all the variants, and in particular those where the insert is made of rigid molded plastic material and / or reinforced, those where the tube is made of steel or of a metal other than aluminum or an aluminum alloy, those where the flexible hose is for example reinforced by reinforcements and / or comprises an external protective envelope, those where there is further provided a fixing by bonding of the insert to the tube, and those in which the tubular part of the insert introduced into the pipe extends substantially beyond the crimped part.

Claims

REVENDICATIONS
1. Dispositif (1) de raccordement étanche entre une partie terminale d'un embout (2) de tube métallique (3) et l'extrémité (4) d'un tuyau souple1. Device (1) for sealing connection between an end part of a ferrule (2) of metal tube (3) and the end (4) of a flexible pipe
(5) , par sertissage de la partie terminale sur l'extrémité de tuyau, la partie terminale étant en forme de douille de plus grand diamètre que le reste du tube auquel elle est raccordée par un épaulement conique (9) , le dispositif comportant un insert (11) rigide évidé de bout en bout par un alésage (12) et comprenant d'un côté une partie tubulaire insérée en force dans l'extrémité du tuyau en vis à vis de la portion sertie de la partie terminale, et de l'autre côté un embout d'extrémité tubulaire (13) inséré avec frottement dans l'embout de tube (3) au-delà de l'épaulement conique (9), ledit insert (11) comprenant des moyens de butée axiale contre ledit épaulement, caractérisé en ce que les moyens de butée axiale contre 1 ' épaulement conique comprennent une rondelle (20) en forme de disque cylindrique uniquement en contact avec 1 ' épaulement conique par 1 ' intermédiaire de la tranche périphérique (21) de ladite rondelle et dont la face opposée audit épaulement est en butée contre l'extrémité (4) du tuyau souple (5) . (5), by crimping the end part on the end of the pipe, the end part being in the form of a socket of larger diameter than the rest of the tube to which it is connected by a conical shoulder (9), the device comprising a rigid insert (11) hollowed out end to end by a bore (12) and comprising on one side a tubular part inserted by force into the end of the pipe opposite the crimped portion of the terminal part, and the 'other side a tubular end fitting (13) inserted with friction in the tube fitting (3) beyond the conical shoulder (9), said insert (11) comprising means of axial abutment against said shoulder , characterized in that the axial abutment means against the conical shoulder comprise a washer (20) in the form of a cylindrical disc only in contact with the conical shoulder via the peripheral edge (21) of said washer and of which the opposite side to said shoulder is in abutment against the end (4) of the flexible pipe (5).
2. Dispositif selon la revendication 1, caractérisé en ce que la rondelle (20) est rapportée et bloquée axialement sur 1 ' insert (11) .2. Device according to claim 1, characterized in that the washer (20) is attached and locked axially on one insert (11).
3. Dispositif selon la revendication 2, caractérisé en ce que la rondelle (20) est en matière différente de celle de 1 ' insert .3. Device according to claim 2, characterized in that the washer (20) is made of a material different from that of the insert.
4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la rondelle (20) est dans la même matière que l'embout de tube métallique (3) .4. Device according to any one of the preceding claims, characterized in that the washer (20) is made of the same material as the end of a metal tube (3).
5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la rondelle (20) est de faible épaisseur.5. Device according to any one of the preceding claims, characterized in that the washer (20) is thin.
6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'embout d'extrémité tubulaire (13) inséré en force dans l'embout de tube rigide comprend des moyens (19) d' étanchéité par joint.6. Device according to any one of the preceding claims, characterized in that the tubular end fitting (13) inserted by force into the rigid tube fitting comprises means (19) for sealing by seal.
7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie tubulaire de 1 ' insert insérée en force dans le tuyau (5) comporte des moyens (27) d' étanchéité par joint .7. Device according to any one of the preceding claims, characterized in that the tubular part of one insert inserted by force into the pipe (5) comprises means (27) for sealing by joint.
8. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'embout de tube (3) au-delà de l'épaulement conique comporte une première partie (16) de diamètre d dans laquelle est inséré l'embout d'extrémité tubulaire (13) de l' insert, et une deuxième partie de diamètre d_< d.8. Device according to any one of the preceding claims, characterized in that the tube end piece (3) beyond the conical shoulder comprises a first part (16) of diameter d into which the end piece d is inserted. tubular end (13) of the insert, and a second part of diameter d_ <d.
9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que 1 ' insert (11) comprend du côté du tube une première partie (14) cylindrique adjacente à la rondelle (20), située entre ladite rondelle et la base de l'épaulement conique (9), d'un premier diamètre externe un peu supérieur au diamètre interne du tube (3), et une deuxième partie (15) cylindrique d'un diamètre inférieur, de diamètre externe plus petit, introduite à frottement dans ledit tube.9. Device according to any one of the preceding claims, characterized in that the insert (11) comprises, on the side of the tube, a first cylindrical part (14) adjacent to the washer (20), located between said washer and the base of the conical shoulder (9), of a first external diameter slightly greater than the internal diameter of the tube (3), and a second cylindrical part (15) of a smaller diameter, of smaller external diameter, introduced frictionally into said tube.
10. Procédé de fabrication d'un dispositif de raccordement étanche entre une partie terminale d'un embout (2) de tube métallique et l'extrémité d'un tuyau souple (5) , par sertissage de ladite partie terminale sur ladite extrémité de tuyau, dans lequel : on déforme ladite partie terminale pour lui donner une forme de douille en constituant un épaulement conique (9) de jonction de la douille avec le reste du tube, on introduit avec frottement dans ladite partie terminale au-delà de l'épaulement (9) une extrémité, munie d'un joint, d'un insert (11) évidé de bout en bout par un alésage cylindrique (12), ledit insert étant muni de moyens de butée avec l'épaulement, on introduit en force 1 ' autre extrémité tubulaire de 1 ' insert dans l'extrémité de tuyau (5), et on sertit la partie formant douille sur le tuyau, caractérisé en ce que on forme au préalable les moyens de butée avec l'épaulement en introduisant sur 1 ' insert une rondelle rapportée jusqu'à l'amener en position de blocage axial sur ledit insert. 10. Method for manufacturing a sealed connection device between an end portion of a metal tube end piece (2) and the end of a flexible pipe (5), by crimping said end portion on said pipe end , in which: said end portion is deformed to give it a form of socket by constituting a conical shoulder (9) for joining the socket with the rest of the tube, it is introduced with friction into said end portion beyond the shoulder (9) one end, provided with a seal, of an insert (11) hollowed out end to end by a cylindrical bore (12), said insert being provided with abutment means with the shoulder, force 1 is introduced 'other tubular end of the insert in the pipe end (5), and the bushing part is crimped onto the pipe, characterized in that the abutment means are formed with the shoulder beforehand by inserting on the insert an attached washer until it brings it to the axial locking position on said insert. .
PCT/FR1998/001283 1997-06-19 1998-06-18 Device for sealed connection between a metal tube joining piece and a flexible pipe, and method for making same WO1998058204A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR97/07668 1997-06-19
FR9707668A FR2764960B1 (en) 1997-06-19 1997-06-19 DEVICE FOR SEALED CONNECTION BETWEEN A METAL TUBE TIP AND THE END OF A FLEXIBLE PIPE, AND METHOD FOR MANUFACTURING SUCH A DEVICE

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WO1998058204A1 true WO1998058204A1 (en) 1998-12-23

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Publication number Priority date Publication date Assignee Title
FR2812076B1 (en) * 2000-07-20 2006-01-27 Manuli Auto France DETENDER DEVICE FOR REFRIGERANT FLUID AND CONDITIONING CIRCUIT COMPRISING SUCH A DEVICE
FR2885398A1 (en) 2005-05-03 2006-11-10 Hutchinson Sa FLEXIBLE, ESPECIALLY FOR AIR CONDITIONING CIRCUIT, EQUIPPED WITH A CONNECTION SYSTEM SEALED BETWEEN A RIGID TUBULAR ELEMENT AND A FLEXIBLE TUBULAR FLEXIBLE ELEMENT

Citations (8)

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Publication number Priority date Publication date Assignee Title
US2024507A (en) * 1932-02-26 1935-12-17 Wagner Electric Corp Hose fitting
US2250286A (en) * 1937-09-27 1941-07-22 United Metal Hose Company Inc Hose coupling
US2401921A (en) * 1942-11-26 1946-06-11 Automotive Prod Co Ltd End fitting for flexible hoses
US2485976A (en) * 1946-03-08 1949-10-25 Aeroquip Corp Hydraulic connector
US3479713A (en) * 1964-10-27 1969-11-25 Weatherhead Co Method of making a hose coupling
US3690703A (en) * 1970-12-02 1972-09-12 Federal Auto Products Co Inc Coupling for hoses of different diameters
US5370425A (en) * 1993-08-25 1994-12-06 S&H Fabricating And Engineering, Inc. Tube-to-hose coupling (spin-sert) and method of making same
FR2737276A1 (en) * 1995-07-24 1997-01-31 Manuli Automobile France Sa SEALED CONNECTION DEVICE BETWEEN A RIGID TUBE TIP AND A FLEXIBLE HOSE AND METHOD FOR MANUFACTURING SUCH A DEVICE

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2024507A (en) * 1932-02-26 1935-12-17 Wagner Electric Corp Hose fitting
US2250286A (en) * 1937-09-27 1941-07-22 United Metal Hose Company Inc Hose coupling
US2401921A (en) * 1942-11-26 1946-06-11 Automotive Prod Co Ltd End fitting for flexible hoses
US2485976A (en) * 1946-03-08 1949-10-25 Aeroquip Corp Hydraulic connector
US3479713A (en) * 1964-10-27 1969-11-25 Weatherhead Co Method of making a hose coupling
US3690703A (en) * 1970-12-02 1972-09-12 Federal Auto Products Co Inc Coupling for hoses of different diameters
US5370425A (en) * 1993-08-25 1994-12-06 S&H Fabricating And Engineering, Inc. Tube-to-hose coupling (spin-sert) and method of making same
FR2737276A1 (en) * 1995-07-24 1997-01-31 Manuli Automobile France Sa SEALED CONNECTION DEVICE BETWEEN A RIGID TUBE TIP AND A FLEXIBLE HOSE AND METHOD FOR MANUFACTURING SUCH A DEVICE

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FR2764960A1 (en) 1998-12-24
FR2764960B1 (en) 1999-08-27

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