CH628128A5 - PIPE CONNECTION. - Google Patents
PIPE CONNECTION. Download PDFInfo
- Publication number
- CH628128A5 CH628128A5 CH266979A CH266979A CH628128A5 CH 628128 A5 CH628128 A5 CH 628128A5 CH 266979 A CH266979 A CH 266979A CH 266979 A CH266979 A CH 266979A CH 628128 A5 CH628128 A5 CH 628128A5
- Authority
- CH
- Switzerland
- Prior art keywords
- sleeve
- pipe
- ring
- connection according
- end piece
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 description 2
- 229920000571 Nylon 11 Polymers 0.000 description 1
- 239000004959 Rilsan Substances 0.000 description 1
- -1 crosslinked or not Polymers 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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
- 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
- F16L19/08—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 with metal rings which bite into the wall of the pipe
- F16L19/10—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 with metal rings which bite into the wall of the pipe the profile of the ring being altered
-
- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/04—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with a swivel nut or collar engaging the pipe
-
- 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
- F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
- F16L33/223—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts the sealing surfaces being pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L33/224—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts the sealing surfaces being pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts a clamping ring being arranged between the threaded member and the connecting member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Mounting Of Bearings Or Others (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
La présente invention est relative à un raccord de tuyau utilisable plus particulièrement pour le raccordement des tuyaux ou tubes semi-rigides en matière plastique, ce raccord comprenant un embout de fixation muni intérieurement d'une butée pour le tuyau, un manchon de maintien intérieur du tuyau formant, avec l'embout, une cavité annulaire de réception de l'extrémité du tuyau, une bague extérieure déformable enfilée sur le tuyau, une douille de serrage vissée sur l'embout et munie d'une surface de poussée de la bague, une rampe destinée à faire pénétrer une extrémité de la bague dans le tuyau lors du vissage de la douille, et des moyens de positionnement provisoire du tuyau à une distance déterminée de la butée. The present invention relates to a pipe connection which can be used more particularly for the connection of semi-rigid plastic pipes or tubes, this connection comprising a fixing end piece fitted internally with a stop for the pipe, an internal holding sleeve for the pipe forming, with the end piece, an annular cavity for receiving the end of the pipe, a deformable outer ring threaded onto the pipe, a clamping sleeve screwed onto the end piece and provided with a ring pushing surface, a ramp intended to make one end of the ring penetrate the pipe when the bushing is screwed, and means for temporarily positioning the pipe at a determined distance from the stop.
Dans les raccords connus de ce type, la surface de poussée de la douille est tronconique et présente une inclinaison opposée à celle de la rampe. Au montage, le tuyau est enfoncé dans l'embout jusqu'à la butée, et le vissage de la douille provoque simultanément une avance axiale et une pénétration radiale dans le tuyau de chaque extrémité de la bague, tandis que cette bague prend une forme bombée. In known fittings of this type, the thrust surface of the socket is frustoconical and has an inclination opposite to that of the ramp. During assembly, the pipe is pushed into the end piece until it stops, and the screwing of the socket simultaneously causes an axial advance and a radial penetration in the pipe from each end of the ring, while this ring takes on a domed shape. .
Ces raccords connus ne donnent pas satisfaction, car le tube voit sa surface griffée par la bague et sa section réduite en deux emplacements relativement étendus, ce qui provoque un affaiblissement notable dans la zone de raccordement. La conséquence en est que la résistance à la traction de l'assemblage est amoindrie. De plus, le couple de serrage est relativement élevé, et il est difficile de savoir à quel moment ce serrage est suffisant. These known connections are not satisfactory, because the tube has its surface scratched by the ring and its reduced section in two relatively large locations, which causes a significant weakening in the connection area. The consequence is that the tensile strength of the assembly is reduced. In addition, the tightening torque is relatively high, and it is difficult to know when this tightening is sufficient.
La présente invention a pour but de remédier à ces inconvénients. A cet effet, le raccord selon l'invention est réalisé selon la revendication I. The object of the present invention is to remedy these drawbacks. To this end, the connector according to the invention is produced according to claim I.
Dans un mode de réalisation avantageux du raccord, les moyens de positionnement comprennent des organes en saillie sur lesquels s'applique, au montage, la tranche d'extrémité du tuyau et qui sont adaptés pour céder sous l'effet de la poussée développée par le vissage de la douille. Ces organes en saillie peuvent notamment comprendre au moins une languette en saillie extérieure sur le manchon obtenue par poinçonnement. In an advantageous embodiment of the connector, the positioning means comprise projecting members on which the end edge of the pipe is applied, during assembly, and which are adapted to yield under the effect of the thrust developed by the screwing the socket. These projecting members may in particular comprise at least one tongue projecting from the outer sleeve obtained by punching.
Les caractéristiques et avantages de l'invention ressortiront de la description qui va suivre, donnée à titre d'exemple, et en regard du dessin annexé, sur lequel: The characteristics and advantages of the invention will emerge from the description which follows, given by way of example, and with reference to the appended drawing, in which:
la fig. 1 est une demi-vue en coupe axiale d'un raccord selon l'invention représenté monté mais non serré; fig. 1 is a half-view in axial section of a connector according to the invention shown mounted but not tight;
la fig. 2 est une demi-vue en coupe axiale du raccord de la fig. 1, après serrage final. fig. 2 is a half view in axial section of the connector of FIG. 1, after final tightening.
Le raccord 1 représenté à la fig. 1 est destiné à raccorder le bout uni d'un tube ou tuyau 2 à un élément ou appareil quelconque (non représenté) tel qu'un té, un tuyau, un radiateur, un compteur, etc. Le tube 2 est en une matière semi-rigide telle qu'un polyéthylène haute ou basse densité, réticulé ou non, du polyamide 11, par exemple du Rilsan, etc. The connector 1 shown in fig. 1 is intended to connect the plain end of a tube or pipe 2 to any element or device (not shown) such as a tee, a pipe, a radiator, a meter, etc. The tube 2 is made of a semi-rigid material such as high or low density polyethylene, crosslinked or not, polyamide 11, for example Rilsan, etc.
Le raccord 1 est constitué de quatre éléments métalliques, à savoir un embout de fixation 3, un manchon de maintien 4, une bague cylindrique 5 de serrage et une douille vissée 6. The connector 1 consists of four metallic elements, namely a fixing end piece 3, a retaining sleeve 4, a cylindrical clamping ring 5 and a screwed socket 6.
L'embout 3 présente intérieurement, à peu près en son milieu, une collerette de butée 7 à faces radiales. D'un côté de celle-ci (à droite en considérant la fig. 1), la paroi interne 8 est cylindrique et taraudée. De l'autre, on trouve une feuillure cylindrique 9 dont le diamètre est légèrement supérieur au diamètre extérieur du tube 2, puis une rampe tronconique 10 qui rejoint la face d'extrémité 11 de l'embout. Le demi-angle au sommet de la rampe 10 est environ 10°. Extérieurement, la partie gauche de l'embout 3 présente un filetage 12 sur une certaine longueur, tandis que sa partie droite 13 est conformée en six-pans. The end piece 3 has internally, roughly in the middle, a stop collar 7 with radial faces. On one side of the latter (on the right considering fig. 1), the internal wall 8 is cylindrical and tapped. On the other, there is a cylindrical rebate 9 whose diameter is slightly greater than the outside diameter of the tube 2, then a frustoconical ramp 10 which joins the end face 11 of the end piece. The half-angle at the top of the ramp 10 is approximately 10 °. Externally, the left part of the end piece 3 has a thread 12 over a certain length, while its right part 13 is shaped as a hexagon.
Le manchon 4 a une forme générale cylindrique et est adapté pour s'enfiler avec un léger jeu dans le tube 2. Son extrémité droite est conformée en un collet extérieur 14 destiné à s'appuyer sur la face gauche de la collerette 7. Le diamètre extérieur de ce collet est un peu inférieur au diamètre de la feuillure 9. Une ou plusieurs languettes 15 sont poinçonnées dans le manchon 4 de façon à faire saillie vers l'extérieur à 90°, la saillie étant à peu près égale à celle du collet 14. The sleeve 4 has a generally cylindrical shape and is suitable for threading with a slight play in the tube 2. Its right end is shaped as an external collar 14 intended to rest on the left face of the collar 7. The diameter outside of this collar is slightly less than the diameter of the rebate 9. One or more tabs 15 are punched in the sleeve 4 so as to project outwards at 90 °, the projection being approximately equal to that of the collar 14.
Le nombre des languettes 15 dépend du diamètre du tuyau 2. Pour des petits diamètres, c'est-à-dire inférieurs à 20 mm, une seule languette suffit tandis que, pour des diamètres supérieurs, il en est prévu de préférence trois. The number of tabs 15 depends on the diameter of the pipe 2. For small diameters, that is to say less than 20 mm, a single tab is sufficient while, for larger diameters, preferably three are provided.
Le manchon 4 et la bague cylindrique sont en métal malléable, tel que du laiton, de manière à permettre certaines déformations sous l'effet d'une contrainte extérieure, comme on le verra plus loin. Les faces d'extrémité de la bague 5 sont radiales. The sleeve 4 and the cylindrical ring are made of malleable metal, such as brass, so as to allow certain deformations under the effect of an external stress, as will be seen below. The end faces of the ring 5 are radial.
La douille 6 a une forme générale cylindrique; elle est munie extérieurement d'un six-pans 16 et intérieurement d'un taraudage 17 qui coopère avec le filetage 12 de l'embout 3. A son extrémité gauche, la douille 6 comporte une collerette intérieure 18 à faces radiales qui définit une lumière circulaire 19 dont le diamètre est très légèrement supérieur au diamètre extérieur du tube 2. The socket 6 has a generally cylindrical shape; it is provided externally with a hexagon 16 and internally with a tapping 17 which cooperates with the thread 12 of the end piece 3. At its left end, the sleeve 6 has an inner flange 18 with radial faces which defines a lumen circular 19 whose diameter is very slightly greater than the outside diameter of the tube 2.
Pour monter le raccord 1, on visse d'abord l'embout 3 sur l'appareil considéré; on enfile le manchon 4 dans le tube 2 jusqu'à ce que la tranche d'extrémité radiale de celui-ci bute sur la ou les languettes 15, et l'on enfile la douille 6 et la bague 5 sur ce tube. On introduit ensuite le manchon 4 et le tube dans l'embout 3 jusqu'à ce que le collet 14 bute contre la collerette 7. Le tube 2 pénètre alors légèrement dans la feuillure 9. Puis on visse la douille 6 sur l'embout 3 jusqu'à ce que la bague 5 bute contre la rampe 10, ce qui amène les divers éléments dans la position de la fig. 1. To mount the fitting 1, the end piece 3 is first screwed onto the device in question; the sleeve 4 is threaded into the tube 2 until the radial end portion of the latter abuts on the tab (s) 15, and the sleeve 6 and the ring 5 are threaded onto this tube. The sleeve 4 and the tube are then introduced into the end piece 3 until the collar 14 abuts against the collar 7. The tube 2 then penetrates slightly into the rebate 9. Then the sleeve 6 is screwed onto the end piece 3 until the ring 5 abuts against the ramp 10, which brings the various elements into the position of FIG. 1.
On procède ensuite au serrage du raccord 1 en continuant à visser la douille 6. Celle-ci, par sa collerette 18, pousse la bague 5 contre la rampe 10, ce qui oblige l'extrémité droite de la bague à mordre dans la surface extérieure du tube 2. La poursuite du vissage de la douille 6 entraîne alors vers la droite d'un seul bloc la bague 5 et le tube 2, ce dernier rabattant progressivement la ou les languettes 15 tandis que Then proceed to tighten the connector 1 continuing to screw the sleeve 6. The latter, by its collar 18, pushes the ring 5 against the ramp 10, which forces the right end of the ring to bite into the outer surface of the tube 2. The continued screwing of the sleeve 6 then drives the ring 5 and the tube 2 to the right in a single block, the latter gradually folding the tab (s) 15 while
5 5
10 10
15 15
20 20
25 25
30 30
35 35
40 40
45 45
50 50
55 55
60 60
65 65
3 3
628 128 628 128
l'extrémité droite de la bague 5 pénètre plus profondément dans le tube 2. the right end of the ring 5 goes deeper into the tube 2.
On poursuit l'opération jusqu'à ce que le tube vienne buter contre la collerette 7 (fig. 2), l'extrémité de la bague 5 arrivant simultanément au bout de la rampe 10. L'augmentation de couple qui se produit alors indique à l'opérateur, soit par sensation directe, soit à l'aide d'une clé dynamométrique, que le serrage doit être stoppé. On peut aussi choisir la longueur du filetage 12 de façon que le vissage de la douille 6 soit automatiquement limité à un emplacement fournissant le serrage désiré. Pour plus de sécurité, l'embout 3 présente extérieurement un épaulement radial 20 que la douille 6 ne peut franchir. The operation is continued until the tube abuts against the flange 7 (fig. 2), the end of the ring 5 arriving simultaneously at the end of the ramp 10. The increase in torque which then occurs indicates to the operator, either by direct feeling, or using a torque wrench, that the tightening must be stopped. One can also choose the length of the thread 12 so that the screwing of the sleeve 6 is automatically limited to a location providing the desired tightening. For added security, the end piece 3 has a radial shoulder 20 on the outside which the sleeve 6 cannot pass through.
Pendant tout le vissage, la bague 5 n'attaque le tube 2 que suivant une ligne circulaire. La pénétration radiale étant, de plus, faible par rapport à l'épaisseur du tube, ce dernier n'est pratiquement pas affaibli dans la zone de raccordement. Il en résulte une liaison très efficace: des essais de traction ont montré que c'est la résistance mécanique intrinsèque du tube qui limite la solidité de l'assemblage; During all the screwing, the ring 5 attacks the tube 2 only along a circular line. The radial penetration being, moreover, low compared to the thickness of the tube, the latter is practically not weakened in the connection zone. This results in a very effective connection: tensile tests have shown that it is the intrinsic mechanical resistance of the tube which limits the solidity of the assembly;
5 en d'autres termes, c'est le tube qui cède, à l'extérieur du raccord 1. 5 in other words, it is the tube which gives way, outside the fitting 1.
De plus, l'étanchéité obtenue à l'extrémité droite de la bague 5 est très bonne et, grâce au mouvement d'ensemble de la bague 5 et du tube 2 lors du vissage, le couple de serrage nécessaire est relativement peu élevé. In addition, the seal obtained at the right end of the ring 5 is very good and, thanks to the overall movement of the ring 5 and the tube 2 during screwing, the required tightening torque is relatively low.
10 10
Bien entendu, en variante, l'embout 3 pourrait être muni dans sa partie droite, au lieu du taraudage 8, de tout autre moyen de fixation approprié, par exemple d'une bride, en fonction du type d'appareil auquel le tube 2 doit être raccordé. Of course, as a variant, the end piece 3 could be provided in its straight part, instead of the internal thread 8, with any other suitable fixing means, for example a flange, depending on the type of device to which the tube 2 must be connected.
R R
1 feuille dessins 1 sheet of drawings
Claims (7)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7808333A FR2420710A1 (en) | 1978-03-22 | 1978-03-22 | PIPE CONNECTION |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH628128A5 true CH628128A5 (en) | 1982-02-15 |
Family
ID=9206163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH266979A CH628128A5 (en) | 1978-03-22 | 1979-03-21 | PIPE CONNECTION. |
Country Status (10)
| Country | Link |
|---|---|
| BE (1) | BE874997A (en) |
| CH (1) | CH628128A5 (en) |
| DE (1) | DE2906026C2 (en) |
| DK (1) | DK147056C (en) |
| FI (1) | FI68118C (en) |
| FR (1) | FR2420710A1 (en) |
| GB (1) | GB2017246B (en) |
| IT (1) | IT1118448B (en) |
| NL (1) | NL7902082A (en) |
| SE (1) | SE7901292L (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1240289B (en) * | 1990-03-27 | 1993-12-06 | I C A R Di Guala Aprile Maria | FITTING FOR A FLEXIBLE HOSE |
| DE9203457U1 (en) * | 1992-03-14 | 1992-05-07 | Burger-Armaturen GmbH, 5840 Schwerte | Pipe coupling |
| SE9801087L (en) * | 1998-03-27 | 1999-09-28 | Ezze Ab | Compression fittings |
| ITRN20050057A1 (en) * | 2005-09-08 | 2007-03-09 | Bucchi S R L | DEVICE FOR THE CONNECTION OF FLEXIBLE PIPES |
| DE102009005940B3 (en) * | 2009-01-23 | 2010-07-08 | Henco Industries Nv | Mounting system has fitting with cylindrical-shaped mounting body support which is closed at annular collar, where mounting body is attached with thread areas with outer thread |
| JP7340847B2 (en) * | 2019-08-01 | 2023-09-08 | 株式会社日邦バルブ | Pipe fittings for resin pipes |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD41495A (en) * | ||||
| US3030130A (en) * | 1958-06-16 | 1962-04-17 | Arthur I Appleton | Fitting for flexible conduit |
| US3640554A (en) * | 1970-01-26 | 1972-02-08 | Parker Hannifin Corp | Coupling for plastic tube |
| US3923323A (en) * | 1974-01-02 | 1975-12-02 | Imp Eastman Corp | Tube fitting |
| US3907335A (en) * | 1974-06-03 | 1975-09-23 | Parker Hannifin Corp | Tube coupling |
-
1978
- 1978-03-22 FR FR7808333A patent/FR2420710A1/en active Granted
-
1979
- 1979-02-14 SE SE7901292A patent/SE7901292L/en not_active Application Discontinuation
- 1979-02-16 DE DE2906026A patent/DE2906026C2/en not_active Expired
- 1979-02-16 DK DK67779A patent/DK147056C/en not_active IP Right Cessation
- 1979-03-08 FI FI790806A patent/FI68118C/en not_active IP Right Cessation
- 1979-03-15 GB GB7909145A patent/GB2017246B/en not_active Expired
- 1979-03-15 NL NL7902082A patent/NL7902082A/en not_active Application Discontinuation
- 1979-03-21 IT IT67587/79A patent/IT1118448B/en active
- 1979-03-21 BE BE0/194138A patent/BE874997A/en not_active IP Right Cessation
- 1979-03-21 CH CH266979A patent/CH628128A5/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| IT1118448B (en) | 1986-03-03 |
| GB2017246A (en) | 1979-10-03 |
| FR2420710B1 (en) | 1983-01-21 |
| DK147056B (en) | 1984-03-26 |
| DE2906026C2 (en) | 1983-01-13 |
| FI68118C (en) | 1985-07-10 |
| FI790806A (en) | 1979-09-23 |
| BE874997A (en) | 1979-09-21 |
| DK67779A (en) | 1979-09-23 |
| SE7901292L (en) | 1979-09-23 |
| DK147056C (en) | 1984-09-03 |
| FI68118B (en) | 1985-03-29 |
| GB2017246B (en) | 1982-04-28 |
| FR2420710A1 (en) | 1979-10-19 |
| IT7967587A0 (en) | 1979-03-21 |
| NL7902082A (en) | 1979-09-25 |
| DE2906026A1 (en) | 1979-09-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |