FR2878014A1 - Flexible hose for air-conditioning circuit in automobile vehicle, comprises polyamide tube material, which is in contact with transported fluid, metallic lap layer assembled on tube and protection layer adhered on lap layer - Google Patents
Flexible hose for air-conditioning circuit in automobile vehicle, comprises polyamide tube material, which is in contact with transported fluid, metallic lap layer assembled on tube and protection layer adhered on lap layer Download PDFInfo
- Publication number
- FR2878014A1 FR2878014A1 FR0411255A FR0411255A FR2878014A1 FR 2878014 A1 FR2878014 A1 FR 2878014A1 FR 0411255 A FR0411255 A FR 0411255A FR 0411255 A FR0411255 A FR 0411255A FR 2878014 A1 FR2878014 A1 FR 2878014A1
- Authority
- FR
- France
- Prior art keywords
- inner tube
- hose
- hose according
- sealing
- corrugated inner
- 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.)
- Pending
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Classifications
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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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/11—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall
- F16L11/115—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall having reinforcements not embedded in the wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
- B60H1/00557—Details of ducts or cables
- B60H1/00571—Details of ducts or cables of liquid ducts, e.g. for coolant liquids or refrigerants
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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
- 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 in the hose by means of tools; Arrangements using such members
- F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
- F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
- F16L33/2073—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member
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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
- 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 in the hose by means of tools; Arrangements using such members
- F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
- F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
- F16L33/2073—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member
- F16L33/2076—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member by plastic deformation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
FLEXIBLE SOUPLE, NOTAMMENT POUR UN CIRCUIT DEFLEXIBLE FLEXIBLE, IN PARTICULAR FOR A CIRCUIT OF
CLIMATISATION DE VEHICULE A MOTEURAIR CONDITIONING OF A MOTOR VEHICLE
L'invention concerne un flexible souple, notamment pour un circuit de climatisation de véhicule automobile. The invention relates to a flexible hose, particularly for a motor vehicle air conditioning circuit.
Tous les flexibles souples selon l'art antérieur, en particulier ceux divulgués par les documents US-5,413,147 (PARKER) et US-5,089,074 (DAYCO), présentent notamment des structures complexes et donc d'un coût de fabrication élevé. All flexible flexible according to the prior art, in particular those disclosed by documents US-5,413,147 (PARKER) and US-5,089,074 (DAYCO), have particularly complex structures and therefore a high manufacturing cost.
Dans le document US-5,413,147 précité, le flexible souple comprend au moins quatre éléments, à savoir: un tube interne corrugué réalisé en un matériau polymérique, une couche intermédiaire en un matériau élastomère, tel qu'un polyéthylène chloré CM, une couche tissée de fibres de renforcement, et une couche externe en caoutchouc élastomère, tel qu'un polyéthylène chloré CM. In US-5,413,147 cited above, the flexible hose comprises at least four elements, namely: a corrugated inner tube made of a polymeric material, an intermediate layer of an elastomeric material, such as a chlorinated polyethylene CM, a woven layer of reinforcing fibers, and an outer layer of elastomeric rubber, such as chlorinated polyethylene CM.
Dans le document US-5,089,074 précité, le flexible souple comprend un tube interne corrugué constitué par la superposition de deux couches interne et externe en deux matériaux thermoplastiques différents, un second tube extrudé sur le tube interne, une couche de renforcement rapportée sur le second tube, et une couche externe de protection. In the document US-5,089,074 cited above, the flexible hose comprises a corrugated inner tube consisting of the superposition of two inner and outer layers of two different thermoplastic materials, a second tube extruded on the inner tube, a reinforcing layer attached to the second tube , and an outer protective layer.
Un but de l'invention est de concevoir un flexible souple dont la structure soit très simple, de manière à lui donner une étanchéité de qualité supérieure à celle des flexibles de l'art antérieur et avec un coût de fabrication qui est sensiblement plus faible que celui des flexibles de l'art antérieur. An object of the invention is to design a flexible hose whose structure is very simple, so as to give it a seal of superior quality to that of the prior art flexible and with a manufacturing cost which is significantly lower than that of the hoses of the prior art.
A cet effet, l'invention propose un flexible souple, notamment pour un circuit de climatisation de véhicule à moteur, qui est caractérisé en ce qu'il est constitué par un élément tubulaire ne comprenant que trois éléments, à savoir: un tube interne corrugué au contact du fluide transporté, une couche de renfort intermédiaire rapporté sur les ondulations du tube interne corrugué, et une couche externe de protection adhérisée ou non sur la couche de renfort intermédiaire. For this purpose, the invention proposes a flexible hose, in particular for a motor vehicle air-conditioning circuit, which is characterized in that it consists of a tubular element comprising only three elements, namely: a corrugated inner tube in contact with the transported fluid, an intermediate reinforcing layer attached to the corrugated inner tube corrugations, and an outer layer of protection adhered or not on the intermediate reinforcing layer.
Le tube interne corrugué est réalisé en une matière thermoplastique qui peut être notamment choisie dans le groupe des polyamides et présente une épaisseur de l'ordre de 0,5mm. The corrugated inner tube is made of a thermoplastic material which may in particular be chosen from the group of polyamides and has a thickness of the order of 0.5 mm.
La couche de renfort intermédiaire ne pénètre pas dans le creux des ondulations du tube interne corrugué, et peut être constituée soit part une nappe textile tressée ou guipée, soit par une nappe métallique. The intermediate reinforcing layer does not penetrate into the hollow corrugated corrugated tube corrugations, and may be constituted either by a braided or gimped textile web or by a metal sheet.
D'une manière générale, la couche externe de protection est réalisée en un matériau élastomère thermoplastique, en particulier du VEGAPRENE, un TPO (EPDM/PP, NRB/PP, IIR/PP) ou un TPU. In general, the outer protective layer is made of a thermoplastic elastomer material, in particular VEGAPRENE, a TPO (EPDM / PP, NRB / PP, IIR / PP) or a TPU.
A titre d'exemple, le tube interne corrugué a une épaisseur de l'ordre de 0,5mm avec des ondulations d'une hauteur inférieure à 2mm, et la couche externe de protection a une épaisseur de l'ordre de 1,5mm. For example, the corrugated inner tube has a thickness of the order of 0.5 mm with corrugations of a height less than 2 mm, and the outer protective layer has a thickness of about 1.5 mm.
A au moins une extrémité du flexible est monté un dispositif de raccordement étanche comprenant notamment un embout tubulaire rigide inséré en partie à l'intérieur du tube interne corrugué, une bague de sertissage rapportée sur la couche externe de protection, des moyens pour assurer l'étanchéité. At least one end of the hose is fitted with a sealed connection device comprising in particular a rigid tubular nozzle inserted partly inside the corrugated inner tube, a crimping ring attached to the outer protective layer, means for securing the seal.
A titre d'exemple, ces moyens pour assurer l'étanchéité peuvent être: - au moins un élément en un matériau élastomère qui est logé dans une gorge périphérique ménagée dans l'embout tubulaire, la gorge pouvant être ménagée sous la forme d'un double lamage, et l'élément d'étanchéité peut être un joint torique en caoutchouc ou un manchon en caoutchouc; - au moins un élément en un matériau élastomère qui peut être surmoulé dans une gorge périphérique ménagée dans l'embout tubulaire; ou - au moins un élément en un matériau élastomère, tel un joint torique en caoutchouc, qui vient se loger dans le creux d'une ondulation du tube interne corrugué ; 25 - une bague en un matériau élastomère qui est rapportée entre l'embout et le tube interne corrugué, la bague d'étanchéité présentant des ondulations de forme complémentaire à celle des ondulations du tube interne corrugué ; ou - un mastic-colle dont est enduit préalablement la surface externe de l'embout rigide en contact avec la face interne du tube corrugué. By way of example, these means for sealing can be: at least one element made of an elastomer material which is housed in a peripheral groove formed in the tubular end-piece, the groove being able to be formed in the form of a double counterbore, and the sealing member may be a rubber O-ring or a rubber sleeve; at least one element made of an elastomer material which can be overmoulded in a peripheral groove formed in the tubular endpiece; or at least one element made of an elastomeric material, such as a rubber O-ring, which is housed in the hollow of a corrugated inner tube corrugation; A ring made of an elastomeric material which is attached between the tip and the corrugated inner tube, the sealing ring having corrugations of complementary shape to that of the corrugated inner tube corrugations; or - a putty-glue which is coated beforehand the outer surface of the rigid tip in contact with the inner face of the corrugated tube.
Un flexible selon l'invention présente de nombreux avantages parmi lesquels il faut notamment citer la simplicité de sa structure; un choix de matériaux tel que l'on peut le fabriquer avec un coût de production réduit par rapport à ceux de l'art antérieur du fait que les matériaux utilisés n'ont pas à subir des opérations de vulcanisation, ce qui simplifie la chaîne de fabrication; le fait d'être souple du fait de l'usage conjoint d'un tube corrugué et d'une faible épaisseur de recouvrement, ce qui minimise la quantité de matière utilisée et son coût de fabrication; et un très bon niveau d'étanchéité avec un tube corrugué ayant une épaisseur suffisante mais sans aggraver la raideur du flexible. A hose according to the invention has many advantages among which we must mention the simplicity of its structure; a choice of materials such that it can be manufactured with a reduced production cost compared to those of the prior art because the materials used do not have to undergo vulcanization operations, which simplifies the chain of production. manufacturing; the fact of being flexible due to the joint use of a corrugated tube and a low thickness of recovery, which minimizes the amount of material used and its manufacturing cost; and a very good level of tightness with a corrugated tube having a sufficient thickness but without aggravating the stiffness of the hose.
L'invention a également pour objet un circuit de climatisation comprenant au moins un flexible souple ayant au moins l'une des caractéristiques précitées. The invention also relates to an air conditioning circuit comprising at least one flexible hose having at least one of the above characteristics.
D'autres avantages, caractéristiques et détails de l'invention ressortiront du complément de description qui va suivre en référence à des dessins annexés, donnés uniquement à titre d'exemple et dans lesquels: la figure 1 est une demi-vue en coupe longitudinale d'une portion d'un flexible souple selon l'invention - la figure la est une demi-vue en coupe longitudinale d'un flexible selon une variante de réalisation de l'invention; - la figure 2 est une demi-vue en coupe d'une extrémité du flexible souple de la figure 1 équipée d'un dispositif de raccordement étanche; - les figures 2a à 2c sont des demi-vues en coupe partielle pour illustrer des variantes de réalisation des moyens d'étanchéité du dispositif de raccordement étanche de la figure 2; et - la figure 3 est une demi-vue en coupe d'une extrémité du flexible souple de la figure 1 équipée d'une variante de réalisation du dispositif de raccordement étanche de la figure 2. Other advantages, characteristics and details of the invention will emerge from the additional description which will follow with reference to the accompanying drawings, given solely by way of example and in which: FIG. 1 is a half-view in longitudinal section of FIG. a portion of a flexible hose according to the invention - Figure la is a half-view in longitudinal section of a hose according to an alternative embodiment of the invention; - Figure 2 is a half-sectional view of one end of the flexible hose of Figure 1 equipped with a sealed connection device; - Figures 2a to 2c are half-views in partial section to illustrate alternative embodiments of the sealing means of the sealing connection device of Figure 2; and FIG. 3 is a half-sectional view of one end of the flexible hose of FIG. 1 equipped with an alternative embodiment of the sealing connection device of FIG. 2.
Le flexible souple 1 selon l'invention et tel que représenté à la 5 figure 1, notamment pour un circuit de climatisation de véhicule à moteur, est d'une structure très simplifiée par rapport à celle des flexibles souples selon l'art antérieur. The flexible hose 1 according to the invention and as shown in FIG. 1, in particular for a motor vehicle air-conditioning circuit, is of a very simplified structure with respect to that of the flexible hoses according to the prior art.
En effet, le flexible souple 1 est un élément tubulaire ne comprenant que trois éléments, à savoir: un tube interne corrugué 3 au contact du fluide transporté, une couche de renfort intermédiaire 5 et une couche externe de protection 7. Indeed, the flexible hose 1 is a tubular element comprising only three elements, namely: a corrugated inner tube 3 in contact with the transported fluid, an intermediate reinforcing layer 5 and an outer protective layer 7.
Le tube interne corrugué 3 présente des ondulations 10 dont la hauteur h est de préférence inférieure à 2mm. D'une manière générale, le tube interne corrugué 1 est réalisé à partir d'une matière thermoplastique d'une épaisseur de l'ordre de 0,5mm et qui est avantageusement choisie dans le groupe comprenant notamment les polyamides (en particulier le PA 6; le PA 4,6; le PA 6,6 et le PA 12), un polyester aliphatique tel qu'un PBT (terephtalate de polybutylène), et un alliage PPO/PA (alliage d'oxyde de polyphénylène et de polyamide). The corrugated inner tube 3 has corrugations 10 whose height h is preferably less than 2 mm. In general, the corrugated inner tube 1 is made from a thermoplastic material having a thickness of the order of 0.5 mm and which is advantageously chosen from the group comprising especially polyamides (in particular PA 6 PA 4.6, PA 6.6 and PA 12), an aliphatic polyester such as PBT (polybutylene terephthalate), and a PPO / PA alloy (polyphenylene oxide polyamide alloy).
Selon une variante de réalisation du flexible selon l'invention illustrée à la figure la, le tube interne 3 présente une surface interne sensiblement lisse et une surface externe corruguée avec des ondulations 10, ce qui permet de limiter les pertes de charge. According to an alternative embodiment of the hose according to the invention illustrated in Figure la, the inner tube 3 has a substantially smooth inner surface and an outer surface corrugated with corrugations 10, which limits the pressure losses.
La couche de renfort intermédiaire 5 est rapportée sur les ondulations 10 du tube interne 3 mais sans pénétrer dans le creux 12 des ondulations 10. Cette couche de renfort intermédiaire 5 peut être réalisée soit par une nappe textile tissée ou guipée soit par une nappe métallique. The intermediate reinforcing layer 5 is attached to the corrugations 10 of the inner tube 3 but does not penetrate into the recess 12 of the corrugations 10. This intermediate reinforcing layer 5 can be made either by a woven or wrapped textile web or by a metal sheet.
La couche externe de protection 7 a une épaisseur de l'ordre de 1,5mm, est réalisée à partir d'un matériau élastomère thermoplastique TPE, et peut être adhérisée ou non sur la couche de renfort intermédiaire 5, une adhérisation permettant d'améliorer la tenue en fatigue du flexible. The outer protective layer 7 has a thickness of the order of 1.5 mm, is made from a TPE thermoplastic elastomer material, and may be adhered or not to the intermediate reinforcing layer 5, a bonding to improve the fatigue strength of the hose.
Avantageusement, la couche 5 est réalisée à partir de VEGAPRENE (élastomère réticulé à transformation thermoplastique qui comprend au moins un élastomère à polymérisation par un catalyseur métallocène et une polyoléfine greffée). Advantageously, the layer 5 is made from VEGAPRENE (thermoplastic transformation crosslinked elastomer which comprises at least one polymerization elastomer with a metallocene catalyst and a grafted polyolefin).
La couche interne de protection 7 peut être également fabriquée à partir d'un matériau élastomère thermoplastique choisi parmi les matériaux suivants: - des copolymères séquencés styrène-butadiène (SBS), styrène-éthylène- butène (SEBS) ou styrène-isoprène (SIS) ; - des élastomères thermoplastiques dérivés des polyoléfines (TPO) tels que par exemple un EPDM/PP, un NBR/PP ou un IIR/PP; - des polyuréthannes thermoplastiques (TPU) ; - des élastomères thermoplastiques de polyesters (CPE) ; ou - des élastomères thermoplastiques de polyéther-ester blocs 15 amides (CPA). The inner protective layer 7 may also be made from a thermoplastic elastomer material chosen from the following materials: styrene-butadiene (SBS), styrene-ethylene-butene (SEBS) or styrene-isoprene (SIS) block copolymers ; thermoplastic elastomers derived from polyolefins (TPO) such as, for example, EPDM / PP, NBR / PP or IIR / PP; thermoplastic polyurethanes (TPU); thermoplastic elastomers of polyesters (CPE); or polyether amide block ester (CPA) thermoplastic elastomers.
Un dispositif de raccordement étanche 15 est monté à au moins une extrémité du flexible 1. A sealed connection device 15 is mounted at at least one end of the hose 1.
Selon un premier mode de réalisation illustré à la figure 2, le dispositif de raccordement étanche 15 comprend notamment un embout tubulaire rigide 17 qui est en partie inséré à force à l'intérieur de l'extrémité du flexible 1, et une bague de sertissage 19 qui est en partie rapportée sur la couche externe de protection 7 du flexible 1, cette bague 19 se trouvant en regard de l'embout 17. La bague 19 est sertie en direction de l'embout 17 et son extrémité libre 19a est rabattue sensiblement à 90 pour venir au contact d'un bossage périphérique 21 de l'embout 17. L'opération de sertissage a pour effet de comprimer la couche externe de protection 7 du flexible 1 et d'aplanir les ondulations 10 du tube interne corrugué 3 du flexible 1. According to a first embodiment illustrated in Figure 2, the sealing connection device 15 comprises in particular a rigid tubular nozzle 17 which is partially inserted by force inside the end of the hose 1, and a crimping ring 19 which is partly attached to the outer protective layer 7 of the hose 1, this ring 19 being opposite the endpiece 17. The ring 19 is crimped towards the endpiece 17 and its free end 19a is folded substantially to 90 to come into contact with a peripheral boss 21 of the nozzle 17. The crimping operation has the effect of compressing the outer protective layer 7 of the hose 1 and to smooth the corrugations 10 of the corrugated inner tube 3 of the hose 1.
L'étanchéité du dispositif de raccordement 15 peut être assurée par au moins un élément 23 réalisé en un matériau élastomère qui peut être par exemple soit un joint torique en caoutchouc (figure 2), soit un manchon en caoutchouc (figure 2a). Avantageusement, l'élément d'étanchéité 10 23 vient se loger dans une gorge périphérique annulaire 25 ménagée dans l'embout rigide 17, cette gorge 25 étant réalisée sous la forme d'un double lamage, c'est-à-dire présentant deux fonds 25a et 25b. L'élément d'étanchéité 23 se positionne dans le fond de la gorge 25b, et la gorge 25a évite à l'élément d'étanchéité 23 de rouler lors de l'insertion de l'embout 17 à l'intérieur du flexible 1, en particulier lorsque l'élément d'étanchéité 23 est un joint torique. The sealing of the connecting device 15 may be provided by at least one element 23 made of an elastomeric material which may for example be a rubber O-ring (Figure 2) or a rubber sleeve (Figure 2a). Advantageously, the sealing member 23 is housed in an annular peripheral groove 25 formed in the rigid end piece 17, this groove 25 being made in the form of a double counterbore, that is to say having two funds 25a and 25b. The sealing element 23 is positioned in the bottom of the groove 25b, and the groove 25a prevents the sealing element 23 from rolling during insertion of the nozzle 17 into the inside of the hose 1, in particular when the sealing element 23 is an O-ring.
L'étanchéité du dispositif de raccordement 15 peut être également assurée par au moins un élément 23 réalisé en un matériau élastomère, du caoutchouc par exemple, qu est surmoulé dans une gorge périphérique 25 ménagée dans l'embout rigide 17, comme cela est illustré à la figure 2b. The sealing of the connecting device 15 may also be provided by at least one element 23 made of an elastomer material, for example rubber, which is overmolded in a peripheral groove 25 formed in the rigid end piece 17, as illustrated in FIG. Figure 2b.
L'étanchéité du dispositif de raccordement 15 peut être également assurée par au moins un élément 23 réalisé en un matériau élastomère sous la forme d'un joint torique en caoutchouc par exemple qui vient se loger dans le creux d'une ondulation 10 du tube interne corrugué 3 et s'appliquer sur l'embout rigide 17, comme cela est illustré à la figure 2c. The sealing of the connecting device 15 can also be provided by at least one element 23 made of an elastomer material in the form of a rubber O-ring for example which is housed in the hollow of a corrugation 10 of the inner tube corrugated 3 and apply on the rigid end 17, as shown in Figure 2c.
Selon un second mode de réalisation illustré à la figure 3, le dispositif de raccordement étanche 15 comprend notamment une bague d'étanchéité 30 qui est rapportée sur l'embout rigide 17 jusqu'à venir en butée sur un épaulement 32 de l'embout 17. La surface périphérique de la bague 30 présente des ondulations 30a qui ont une forme complémentaire à celles du tube interne corrugué 3, de manière à créer un contact étanche après sertissage de la bague 19. According to a second embodiment illustrated in FIG. 3, the sealing connection device 15 comprises in particular a sealing ring 30 which is attached to the rigid end piece 17 until it abuts on a shoulder 32 of the endpiece 17 The peripheral surface of the ring 30 has corrugations 30a which have a shape complementary to those of the corrugated inner tube 3, so as to create a tight contact after crimping of the ring 19.
Enfin, l'étanchéité du dispositif de raccordement 15 (figures 2 et 3), pourrait être aussi assurée par un mastic-colle dont on aurait enduit préalablement la surface externe de l'embout rigide 17 en contact avec la surface interne du tube corrugué 3. Finally, the sealing of the connection device 15 (FIGS. 2 and 3) could also be ensured by a putty-adhesive previously coated with the external surface of the rigid end-piece 17 in contact with the inner surface of the corrugated tube 3 .
Claims (20)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0411255A FR2878014A1 (en) | 2004-10-22 | 2004-10-22 | Flexible hose for air-conditioning circuit in automobile vehicle, comprises polyamide tube material, which is in contact with transported fluid, metallic lap layer assembled on tube and protection layer adhered on lap layer |
FR0502634A FR2878015A1 (en) | 2004-10-22 | 2005-03-17 | Flexible hose for air-conditioning circuit in automobile vehicle, comprises polyamide tube material, which is in contact with transported fluid, metallic lap layer assembled on tube and protection layer adhered on lap layer |
ES05292214T ES2320783T3 (en) | 2004-10-22 | 2005-10-21 | FLEXIBLE HOSE FOR A CLIMATE CONTROL CIRCUIT OF A MOTOR VEHICLE. |
DE602005012210T DE602005012210D1 (en) | 2004-10-22 | 2005-10-21 | Flexible hose for air conditioning circuit of a motor vehicle |
EP05292214A EP1650483B1 (en) | 2004-10-22 | 2005-10-21 | Flexible hose line for air conditioning circuit of a motor vehicle |
AT05292214T ATE420314T1 (en) | 2004-10-22 | 2005-10-21 | FLEXIBLE HOSE LINE FOR THE CLIMATE CIRCUIT OF A MOTOR VEHICLE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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FR0411255A FR2878014A1 (en) | 2004-10-22 | 2004-10-22 | Flexible hose for air-conditioning circuit in automobile vehicle, comprises polyamide tube material, which is in contact with transported fluid, metallic lap layer assembled on tube and protection layer adhered on lap layer |
Publications (1)
Publication Number | Publication Date |
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FR2878014A1 true FR2878014A1 (en) | 2006-05-19 |
Family
ID=34950410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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FR0411255A Pending FR2878014A1 (en) | 2004-10-22 | 2004-10-22 | Flexible hose for air-conditioning circuit in automobile vehicle, comprises polyamide tube material, which is in contact with transported fluid, metallic lap layer assembled on tube and protection layer adhered on lap layer |
Country Status (1)
Country | Link |
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FR (1) | FR2878014A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2146128A2 (en) | 2008-07-17 | 2010-01-20 | Hutchinson | Hose for an automobile air-conditioning or power-steering circuit |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4593942A (en) * | 1984-07-16 | 1986-06-10 | Hydrasearch Co., Inc. | Coupling for thin-walled flexible hose |
EP0332853A1 (en) * | 1988-03-12 | 1989-09-20 | Witzenmann GmbH Metallschlauch-Fabrik Pforzheim | Conduit joint |
DE4238605A1 (en) * | 1992-11-17 | 1994-05-19 | Rasmussen Gmbh | Flexible rugged tubing e.g. for petrol pumps or tankers - consists of innermost corrugated thermoplastic liner, reinforcing layer and outermost thermoplastic covering including e.g. fluoropolymer |
DE19524394C1 (en) * | 1995-07-04 | 1997-01-09 | Tecalemit Gmbh Deutsche | Expansion hose |
EP0926417A2 (en) * | 1997-12-19 | 1999-06-30 | Daniel Knipping | Press-fitting for corrugated pipes |
-
2004
- 2004-10-22 FR FR0411255A patent/FR2878014A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4593942A (en) * | 1984-07-16 | 1986-06-10 | Hydrasearch Co., Inc. | Coupling for thin-walled flexible hose |
EP0332853A1 (en) * | 1988-03-12 | 1989-09-20 | Witzenmann GmbH Metallschlauch-Fabrik Pforzheim | Conduit joint |
DE4238605A1 (en) * | 1992-11-17 | 1994-05-19 | Rasmussen Gmbh | Flexible rugged tubing e.g. for petrol pumps or tankers - consists of innermost corrugated thermoplastic liner, reinforcing layer and outermost thermoplastic covering including e.g. fluoropolymer |
DE19524394C1 (en) * | 1995-07-04 | 1997-01-09 | Tecalemit Gmbh Deutsche | Expansion hose |
EP0926417A2 (en) * | 1997-12-19 | 1999-06-30 | Daniel Knipping | Press-fitting for corrugated pipes |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2146128A2 (en) | 2008-07-17 | 2010-01-20 | Hutchinson | Hose for an automobile air-conditioning or power-steering circuit |
FR2934028A1 (en) * | 2008-07-17 | 2010-01-22 | Hutchinson | FLEXIBLE FOR AIR CONDITIONING OR POWER STEERING SYSTEM OF A MOTOR VEHICLE, AND SUCH A CIRCUIT INCORPORATING IT. |
EP2146128A3 (en) * | 2008-07-17 | 2010-02-10 | Hutchinson | Hose for an automobile air-conditioning or power-steering circuit |
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