FR2694367A1 - Connecting device for hydraulic circuits - comprises male end with groove having watertight joint and socket, with gripping arrangement forcing joint to deform assuring watertight connection - Google Patents
Connecting device for hydraulic circuits - comprises male end with groove having watertight joint and socket, with gripping arrangement forcing joint to deform assuring watertight connection Download PDFInfo
- Publication number
- FR2694367A1 FR2694367A1 FR9209340A FR9209340A FR2694367A1 FR 2694367 A1 FR2694367 A1 FR 2694367A1 FR 9209340 A FR9209340 A FR 9209340A FR 9209340 A FR9209340 A FR 9209340A FR 2694367 A1 FR2694367 A1 FR 2694367A1
- Authority
- FR
- France
- Prior art keywords
- connection device
- male part
- joint
- male
- socket
- 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
Links
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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
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- 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
- F16L19/06—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 in which radial clamping is obtained by wedging action on non-deformed pipe ends
- F16L19/065—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 in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring
- F16L19/0653—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 in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring the ring being rotatably connected to one of the connecting parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/02—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined
- F16L37/025—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined with an inner elastic part pressed against an outer part by reason of its elasticity
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
DISPOSITIF DE RACCORDEMENT POUR CIRCUIT HYDRAULIOUE
La présente invention concerne un dispositif de raccordement pour circuit hydraulique, comprenant notamment une pièce femelle solidaire d'un organe à raccorder et une pièce mâle ou embout solidaire d'un tube à raccorder.CONNECTION DEVICE FOR HYDRAULIC CIRCUIT
The present invention relates to a connection device for a hydraulic circuit, comprising in particular a female part secured to a member to be connected and a male part or end piece secured to a tube to be connected.
La présente invention concerne plus particulièrement un dispositif de raccordement qui résiste à une pression de 5 bars, qui soit étanche et démontable, et dont la mise en oeuvre n'implique aucune contrainte quant à la position angulaire de la pièce mâle lors de son assujettissement. Cette dernière caractéristique est importante notamment dans le cas où le tube à raccorder doit occuper une orientation prédéfinie par rapport à l'organe à raccorder. The present invention relates more particularly to a connection device which withstands a pressure of 5 bars, which is waterproof and removable, and the implementation of which does not imply any constraint as to the angular position of the male part when it is subjected. This last characteristic is important in particular in the case where the tube to be connected must occupy a predefined orientation relative to the member to be connected.
On connaît déjà de nombreux dispositifs de raccordement pour circuit hydraulique qui satisfont plus ou moins correctement aux conditions énoncées ci-dessus, on peut notamment citer les dispositifs décrits dans les demandes de brevet FR-A-2.532.396,
US-A-4.541.658 ou encore EP-A-113528. Ces différents systèmes de raccordement pour circuit hydraulique ont tous pour caractéristique de présenter des organes d'étanchéité et de verrouillage distincts. Cette caractéristique complique la réalisation de ces systèmes de raccordement en nécessitant une grande précision de fabrication et donc renchérit le coût de fabrication de tels dispositifs.Numerous connection devices for a hydraulic circuit are already known which more or less correctly satisfy the conditions set out above, mention may in particular be made of the devices described in patent applications FR-A-2,532,396,
US-A-4,541,658 or also EP-A-113528. These different connection systems for hydraulic circuits all have the characteristic of having separate sealing and locking members. This characteristic complicates the production of these connection systems by requiring high manufacturing precision and therefore increases the cost of manufacturing such devices.
La présente invention a pour objet un dispositif de raccordement particulièrement simple à réaliser, parfaitement adapté à des productions de grande série du fait d'une moindre précision de fabrication nécessaire, de son faible prix de revient et de sa grande fiabilité. The subject of the present invention is a connection device which is particularly simple to produce, perfectly suited to mass production due to the lower manufacturing precision required, its low cost price and its high reliability.
Le dispositif de raccordement selon l'invention, comprend une pièce femelle solidaire d'un organe à raccorder et une pièce mâle correspondante solidaire d'un tube à raccorder. La pièce mâle et la pièce femelle comportent des parties cylindriques destinées à coulisser l'une dans l'autre. The connection device according to the invention comprises a female part secured to a member to be connected and a corresponding male part secured to a tube to be connected. The male part and the female part have cylindrical parts intended to slide into one another.
Selon l'invention le dispositif de raccordement est caractérisé en ce que la pièce mâle comporte d'une part un évidement périphérique cylindrique s'étendant au voisinage de son extrémité libre et dans lequel sont disposés un joint d'étanchéité torique et une douille apte à coulisser le long dudit évidement et d'autre part des moyens de serrage aptes à forcer le joint contre la douille de façon à déformer radialement le joint pour assurer à la fois l'étanchéité et le verrouillage du raccordement entre la pièce mâle et la pièce femelle. According to the invention the connection device is characterized in that the male part comprises on the one hand a cylindrical peripheral recess extending in the vicinity of its free end and in which are arranged an O-ring seal and a socket suitable for slide along said recess and on the other hand clamping means capable of forcing the seal against the sleeve so as to deform the seal radially to ensure both the sealing and the locking of the connection between the male part and the female part .
Selon une autre caractéristique du dispositif de raccordement selon l'invention, la pièce femelle est constituée par un simple alésage cylindrique dans lequel peut coulisser la pièce mâle, cet alésage présentant un diamètre intérieur légèrement inférieur au diamètre nominal externe du joint torique. According to another characteristic of the connection device according to the invention, the female part is constituted by a simple cylindrical bore in which the male part can slide, this bore having an internal diameter slightly smaller than the nominal external diameter of the O-ring.
Selon une autre caractéristique du dispositif de raccordement selon l'invention, la douille comprend un épaulement faisant saillie hors dudit évidement, l'épaulement à raccorder. According to another characteristic of the connection device according to the invention, the sleeve comprises a shoulder projecting from said recess, the shoulder to be connected.
Selon une autre caractéristique du dispositif de raccordement selon l'invention, les moyens de serrage sont formés par un écrou coopérant avec un filetage cylindrique usiné à la périphérie de la pièce mâle. L'écrou est agencé de façon que, la pièce mâle étant en position dans la pièce femelle, son serrage au contact de l'épaulement, entraîne le déplacement de la pièce mâle à l'intérieur de la pièce femelle et l'écrasement du joint entre une extrémité de son logement et la douille. According to another characteristic of the connection device according to the invention, the clamping means are formed by a nut cooperating with a cylindrical thread machined at the periphery of the male part. The nut is arranged so that, the male part being in position in the female part, its tightening in contact with the shoulder, causes the male part to move inside the female part and the seal to be crushed between one end of its housing and the socket.
Le serrage de l'écrou au contact de l'organe solidaire de la pièce femelle, via l'épaulement de la douille, entraîne en effet, un retrait partiel de la pièce mâle hors de la pièce femelle et la déformation radiale du joint contre l'alésage formant la pièce femelle sous la contrainte exercée de part et d'autre du joint par la douille et l'extrémité du logement. C'est cet écrasement radial du joint torique qui génère l'étanchéité et le verrouillage des éléments entre eux du fait des forces de frottement exercées par le joint sur l'alésage. The tightening of the nut in contact with the member secured to the female part, via the shoulder of the sleeve, in fact leads to a partial withdrawal of the male part from the female part and the radial deformation of the seal against the 'bore forming the female part under the stress exerted on either side of the joint by the sleeve and the end of the housing. It is this radial crushing of the O-ring which generates the sealing and the locking of the elements together due to the frictional forces exerted by the seal on the bore.
Selon une autre caractéristique du dispositif de raccordement objet de l'invention, l'épaulement porté par la douille recouvre pour partie le filetage de l'embout mâle. According to another characteristic of the connection device which is the subject of the invention, the shoulder carried by the sleeve partly covers the thread of the male end piece.
Selon un mode de réalisation particulier de l'invention, la douille est formée par deux demidouilles. According to a particular embodiment of the invention, the sleeve is formed by two half-dowels.
On comprendra mieux les buts, aspects et avantages de la présente invention, d'apres la description donnée ci-après d'un mode de réalisation de l'invention appliqué à un moteur à combustion interne, ce mode de réalisation étant donné à titre d'exemple non limitatif, en se référant aux dessins annexés, dans lesquels :
- la figure 1 est une vue en perspective et en coupe partielle d'un dispositif de raccordement selon l'invention ~
- les figures 2 et 3 sont des vues partielles en coupe selon l'axe X-X' de la figure 1, précisant la mise en oeuvre du dispositif de raccordement décrit à la figure 1.The aims, aspects and advantages of the present invention will be better understood from the description given below of an embodiment of the invention applied to an internal combustion engine, this embodiment being given by way of non-limiting example, with reference to the accompanying drawings, in which:
- Figure 1 is a perspective view in partial section of a connection device according to the invention ~
- Figures 2 and 3 are partial sectional views along the axis XX 'of Figure 1, detailing the implementation of the connection device described in Figure 1.
Conformément aux figures décrites ci-après seuls ont été représentés les éléments constitutifs du moteur nécessaires à la compréhension de l'invention. In accordance with the figures described below, only the constituent elements of the engine necessary to understand the invention have been shown.
Sur la figure 1, on voit une partie d'extrémité d'un organe à raccorder 1 qui peut être par exemple un système hydraulique pour la commande 5 10 15 20 25 30 35 d'une distribution variable installé dans la culasse d'un moteur à combustion interne d'un véhicule automobile. Cet organe 1 est destiné à être alimenté en fluide sous pression, tel que de l'huile de lubrification ou du liquide de refroidissement, à partir d'une conduite tubulaire d'amenée, appelée ci-après tube, référencée 2. In Figure 1, there is shown an end portion of a member to be connected 1 which can be for example a hydraulic system for the control of a variable distribution installed in the cylinder head of an engine internal combustion engine. This member 1 is intended to be supplied with pressurized fluid, such as lubricating oil or coolant, from a tubular supply pipe, hereinafter called tube, referenced 2.
Le dispositif de raccordement selon l'invention a donc pour objet d'assurer la liaison entre le tube 2 et l'organe 1. Le dispositif de raccordement comprend une pièce femelle solidaire de l'organe 1, pièce femelle qui est constituée par un simple alésage cylindrique 3 usiné directement dans l'organe 1, et une pièce mâle ou embout 4 solidaire du tube 2. The connection device according to the invention therefore aims to ensure the connection between the tube 2 and the member 1. The connection device comprises a female part integral with the member 1, female part which is constituted by a simple cylindrical bore 3 machined directly in the member 1, and a male part or end piece 4 integral with the tube 2.
L'embout 4 présente un corps sensiblement cylindrique depuis son extrémité libre 7 jusqu'au tube 2, destiné à pouvoir glisser sans jeu dans l'alésage 3. Un évidement formant logement 6 est toutefois prévu à la périphérie de l'embout 4, au voisinage de l'extrémité libre 7. Cet évidement est formée par une partie cylindrique s'étendant axialement et délimitée par deux épaulements droits. L'embout présente par ailleurs un filetage 16, à pas à droite, s'étendant sensiblement en arrière de l'évidement 6, filetage sur lequel est vissé un écrou 14 destiné à être serré contre le corps de l'organe 1. The endpiece 4 has a substantially cylindrical body from its free end 7 to the tube 2, intended to be able to slide without play in the bore 3. A recess forming a housing 6 is however provided at the periphery of the endpiece 4, at near the free end 7. This recess is formed by a cylindrical part extending axially and delimited by two straight shoulders. The endpiece also has a thread 16, with a right-hand pitch, extending substantially behind the recess 6, a thread onto which is screwed a nut 14 intended to be tightened against the body of the member 1.
L'évidement 6 reçoit un joint d'étanchéité torique 8 dont le diamètre intérieur correspond sensiblement au diamètre de la partie cylindrique et dont le diamètre extérieur est légèrement supérieur à celui de l'alésage 3. Ce joint 8 est du type à fort coefficient de frottement comme les joints caoutchouc standards. The recess 6 receives an O-ring seal 8 whose internal diameter corresponds substantially to the diameter of the cylindrical part and whose external diameter is slightly greater than that of the bore 3. This seal 8 is of the type with a high coefficient of friction like standard rubber seals.
Une douille étagée 12 est logée par ailleurs sur l'embout 4 à cheval sur l'évidement 6 et le filetage 16. La douille 12 comprend donc une première partie cylindrique 18 ajustée à l'évidement 6 et pouvant coulisser le long de ce dernier. Le diamètre extérieur de cette première partie 18 est Légèrement inférieur au diamètre de l'alésage 3 pour permettre ltemmanchement de l'embout. Cette partie cylindrique 18 est prolongée par une seconde partie cylindrique 19 entourant l'extrémité du filetage 16.La jonction entre les deux parties cylindriques est opérée par un épaulement 13 plus particulièrement destiné à venir au contact de la face d'appui de l'organe 1, lors de l'emmanchement de la pièce mâle dans la pièce femelle. A stepped socket 12 is also housed on the end piece 4 straddling the recess 6 and the thread 16. The socket 12 therefore comprises a first cylindrical part 18 adjusted to the recess 6 and capable of sliding along the latter. The outside diameter of this first part 18 is slightly smaller than the diameter of the bore 3 to allow the fitting of the end piece. This cylindrical part 18 is extended by a second cylindrical part 19 surrounding the end of the thread 16. The junction between the two cylindrical parts is effected by a shoulder 13 more particularly intended to come into contact with the bearing face of the member 1, during the fitting of the male part into the female part.
Conformément à ce qui vient d'être décrit et conformément aux figures 2 et 3, la mise en oeuvre du dispositif de raccordement est alors la suivante. In accordance with what has just been described and in accordance with FIGS. 2 and 3, the implementation of the connection device is then as follows.
L'embout 4 est d'abord emmanché par coulissement dans l'alésage 3. Le joint torique 8 n'oppose alors pratiquement aucune résistance à cette pénétration malgré son diamètre extérieur légèrement supérieur au diamètre de l'alésage 3. The endpiece 4 is first fitted by sliding in the bore 3. The O-ring 8 then offers practically no resistance to this penetration despite its outside diameter slightly greater than the diameter of the bore 3.
On effectue ensuite le verrouillage du raccord en vissant écrou 14 jusqu'à venir contre l'extrémité longitudinale de la partie cylindrique 19 de la douille 12. On serre alors écrou à une valeur prédéterminée de couple. Compte tenu du pas de vissage à droite de la partie filetée 16, le serrage de écrou 14 contre la douille 12, ellemême en appui par son épaulement 13 contre l'organe à raccorder 1, provoque un retrait partiel de ltembout 4 hors de l'alésage 3.Ce léger retrait entrain la mise sous contrainte du joint 8 par écrasement entre ltépaulement de l'évidement 6, côté extrémité libre 7, et ltextrémité longitudinale libre de la partie cylindrique 18 de la douille 12, ce qui provoque à la fois le blocage de l'embout et ltétanchéité du montage. The coupling is then locked by screwing the nut 14 until it comes against the longitudinal end of the cylindrical part 19 of the sleeve 12. The nut is then tightened to a predetermined torque value. In view of the screwing pitch to the right of the threaded part 16, the tightening of the nut 14 against the sleeve 12, itself supported by its shoulder 13 against the member to be connected 1, causes partial withdrawal of the end piece 4 from the bore 3. This slight withdrawal causes the joint 8 to be stressed by crushing between the shoulder of the recess 6, free end side 7, and the free longitudinal end of the cylindrical part 18 of the sleeve 12, which causes both blocking of the nozzle and sealing of the assembly.
En effet lors du serrage, le joint 8 se trouve soumis à une forte contrainte de déformation, la composante radiale des forces appliquées conjuguée au fort coefficient de frottement du joint 8 entraîne le blocage de ce dernier dans l'alésage 3. In fact, during tightening, the seal 8 is subjected to a high deformation stress, the radial component of the applied forces combined with the high coefficient of friction of the seal 8 causes the latter to block in the bore 3.
Pour opérer le démontage de l'embout 4, il suffit de desserrer l'écrou 14, de façon à libérer le joint 8 qui se rétracte et revient à sa forme initiale, le coulissement de ltembout 4 dans l'alésage 3 redevient alors possible. To operate the disassembly of the end piece 4, it suffices to loosen the nut 14, so as to release the seal 8 which retracts and returns to its initial shape, the sliding of the end piece 4 in the bore 3 then becomes possible again.
Ce mode de démontage excessivement simple s'ajoute à la simplicité de réalisation de la pièce femelle 3 et de la pièce mâle 8 ainsi qut l'absence de toute contrainte rigoureuse quant à leur fabrication, par exemple l'état de surface de l'alésage 3 peut être approximatif, cela est même recommandé pour faciliter l'écrasement du joint 8 !. La douille étagée 12 peut être réalisée en une seule pièce ou encore être réalisée en deux demi- douilles, ce dernier mode de réalisation facilitant le montage de la douille 12 sur l'embout. This excessively simple disassembly mode adds to the simplicity of embodiment of the female part 3 and of the male part 8 as well as the absence of any rigorous constraint as to their manufacture, for example the surface condition of the bore. 3 may be approximate, this is even recommended to facilitate the crushing of the seal 8 !. The stepped socket 12 can be made in one piece or even be made in two half-sockets, the latter embodiment facilitating mounting of the socket 12 on the end piece.
Bien entendu, l'invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné qutà titre d'exemple. Of course, the invention is in no way limited to the embodiment described and illustrated which has been given only by way of example.
Au contraire, l'invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont effectuées suivant son esprit. On the contrary, the invention includes all the technical equivalents of the means described and their combinations if these are carried out according to the spirit.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9209340A FR2694367B1 (en) | 1992-07-29 | 1992-07-29 | Connection device for hydraulic circuit. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9209340A FR2694367B1 (en) | 1992-07-29 | 1992-07-29 | Connection device for hydraulic circuit. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2694367A1 true FR2694367A1 (en) | 1994-02-04 |
| FR2694367B1 FR2694367B1 (en) | 1994-09-23 |
Family
ID=9432374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9209340A Expired - Fee Related FR2694367B1 (en) | 1992-07-29 | 1992-07-29 | Connection device for hydraulic circuit. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2694367B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2913261A3 (en) * | 2007-03-01 | 2008-09-05 | Renault Sas | Upper and lower oil return pipelines connecting arrangement for vehicle, has flange and joint of upper pipeline housed in diameter part of lower pipeline, where pipelines are pivoted with respect to one another to ensure pivot connection |
| DE202009013784U1 (en) * | 2009-10-09 | 2010-11-18 | Weh, Erwin | Connecting bolt for a plug-in coupling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2271489A1 (en) * | 1973-07-10 | 1975-12-12 | Mec Confalonierei Off | Tube connector for flexible plastic tubes - for transporting compressed air, oil, water or other media |
| FR2275978A7 (en) * | 1974-06-19 | 1976-01-16 | Pont A Mousson | Rapid connection for domestic tap - screwed connection with sealing ring for fitting various accessories |
| FR2299588A1 (en) * | 1975-01-30 | 1976-08-27 | Tch Hycop Ab | Pipe coupling with screwed clamping nut - has locking spring ring in smooth pipe end clamped by nut |
| US4005884A (en) * | 1972-06-21 | 1977-02-01 | Mordechai Drori | Pipe coupling |
| FR2634270A1 (en) * | 1988-07-14 | 1990-01-19 | Sueddeutsche Kuehler Behr | FITTING FOR TUBES, ESPECIALLY FOR THE COOLANT FLUID CIRCUIT OF AIR CONDITIONING PLANTS IN MOTOR VEHICLES |
-
1992
- 1992-07-29 FR FR9209340A patent/FR2694367B1/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4005884A (en) * | 1972-06-21 | 1977-02-01 | Mordechai Drori | Pipe coupling |
| FR2271489A1 (en) * | 1973-07-10 | 1975-12-12 | Mec Confalonierei Off | Tube connector for flexible plastic tubes - for transporting compressed air, oil, water or other media |
| FR2275978A7 (en) * | 1974-06-19 | 1976-01-16 | Pont A Mousson | Rapid connection for domestic tap - screwed connection with sealing ring for fitting various accessories |
| FR2299588A1 (en) * | 1975-01-30 | 1976-08-27 | Tch Hycop Ab | Pipe coupling with screwed clamping nut - has locking spring ring in smooth pipe end clamped by nut |
| FR2634270A1 (en) * | 1988-07-14 | 1990-01-19 | Sueddeutsche Kuehler Behr | FITTING FOR TUBES, ESPECIALLY FOR THE COOLANT FLUID CIRCUIT OF AIR CONDITIONING PLANTS IN MOTOR VEHICLES |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2913261A3 (en) * | 2007-03-01 | 2008-09-05 | Renault Sas | Upper and lower oil return pipelines connecting arrangement for vehicle, has flange and joint of upper pipeline housed in diameter part of lower pipeline, where pipelines are pivoted with respect to one another to ensure pivot connection |
| DE202009013784U1 (en) * | 2009-10-09 | 2010-11-18 | Weh, Erwin | Connecting bolt for a plug-in coupling |
| WO2011042201A1 (en) * | 2009-10-09 | 2011-04-14 | Erwin Weh | Connecting bolt for a plug coupling |
| CN102648372A (en) * | 2009-10-09 | 2012-08-22 | 欧文.韦 | Connecting bolt for a plug coupling |
| CN102648372B (en) * | 2009-10-09 | 2014-10-22 | 欧文.韦 | Connecting bolt for a plug coupling |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2694367B1 (en) | 1994-09-23 |
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