WO2002039001A1 - Ensemble bague coupante - Google Patents

Ensemble bague coupante Download PDF

Info

Publication number
WO2002039001A1
WO2002039001A1 PCT/DE2001/004196 DE0104196W WO0239001A1 WO 2002039001 A1 WO2002039001 A1 WO 2002039001A1 DE 0104196 W DE0104196 W DE 0104196W WO 0239001 A1 WO0239001 A1 WO 0239001A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
cutting ring
plastic
cutting
union nut
Prior art date
Application number
PCT/DE2001/004196
Other languages
German (de)
English (en)
Original Assignee
Parker Hannifin Gmbh
Udhöfer, Andreas
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 Parker Hannifin Gmbh, Udhöfer, Andreas filed Critical Parker Hannifin Gmbh
Priority to AU2002215847A priority Critical patent/AU2002215847A1/en
Priority to EP01993788A priority patent/EP1334303A1/fr
Publication of WO2002039001A1 publication Critical patent/WO2002039001A1/fr

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
    • 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

Definitions

  • the invention relates to a cutting ring set, consisting of a union nut and at least one cutting ring, for the production of pipe fittings, with a means for mutually fastening the individual elements before assembly.
  • the ring system consists of one
  • Cutting ring that takes over the holding function by cutting into the pipe.
  • a sealing ring is arranged in front of the cutting ring, which takes over the seal with its elastomer component and ensures the guidance of the cutting ring with its metallic support body. Sealing ring, cutting ring, union nut and
  • Sockets are in a defined position and order to each other.
  • connection of the two elements is done by press fitting or by gluing.
  • Sealing element applied a continuous or interrupted bead or retaining knobs made of a vulcanized elastomer are. This makes it possible to accommodate the two-part ring with its sealing ring positioned in the union nut. Such positioning can be carried out in the factory, so that assembly errors due to mix-ups are excluded and the assembly time is considerably reduced.
  • the holding knobs mentioned engage in the thread flanks and thus secure the fit of the two elements in the nut.
  • the retaining knobs can easily shear off with a slight overlap with the thread flanks of the union nut. This is promoted by their specified material properties, namely low strength and elongation at break. If there is a large overlap with the thread flanks, the knobs act as a brake during the screwing process.
  • the invention has for its object the commercially available and standardized according to ISO 8434-1 cutting ring system in terms of its
  • Another object of the invention is to find a simplified, economical solution for bringing the cutting ring and union nut together to form a fitting and to make it difficult to automatically loosen a fully assembled cutting ring screw connection.
  • a plastic tape, plastic, elastomer ring or sheet metal profile element is arranged on a conical or cylindrical outer ring surface of the cutting ring or on a corresponding conical or cylindrical inner surface of the union nut for fastening the union nut.
  • the outer diameter of the plastic band, the plastic or elastomer ring or the sheet metal profile element is in each case adapted to the core diameter of the corresponding inner surface of the union nut.
  • the plastic or elastomer ring is placed or pressed onto the corresponding outer ring surface of the cutting ring or the corresponding inner surface of the union nut in such a way that a press fit is present.
  • the plastic or elastomer ring is glued to the corresponding outer ring surface of the cutting ring or the corresponding inner surface of the union nut.
  • the plastic or elastomer ring has shaped elements on its outer or inner surface.
  • these shaped elements consist of radially directed grooves and webs which interact with the internal thread of the union nut.
  • the webs are designed to be resilient in the circumferential direction of the ring.
  • the plastic or elastomer ring has on its outside stored lubricant, which can be dispensed at the threads when it is pressed into the union nut.
  • the webs are designed in a fan-like manner with an asymmetrical profile and with a specific inclination in the circumferential direction, in such a way that the resistance to rotation of the ring in the direction of insertion is lower than in the direction of rotation.
  • the shaped elements of the plastic or elastomer ring consist of resilient ring segments, the resilient deflection of which is axially directed.
  • the adhesive consists of a plastic, rubber or fabric tape, which is applied to the conical or cylindrical outer ring surface of the cutting ring in the form of a segment of a circle or an annulus.
  • the cutting ring is glued to the inner cone of the union nut.
  • the adhesive used breaks open and the broken adhesive particles take on a lubricant function during the screw connection process.
  • Cutting rings and nuts are available in light (L) and heavy (S) versions. Diameter assignments can easily be confused by closely spaced neighboring sizes. The factory-made set prevents such errors.
  • the union nut can also remain on the cutting ring mounted at the end of the pipe after a pre-assembly or prior to repeated assembly and thus protect it from damage to its metallic sealing surfaces during transport or installation of the pipeline.
  • the known holding knobs described above are not meaningfully transferable to the purely metallic cutting ring. It is usually not exposed to any spraying or vulcanization process in the course of which it makes sense to also spray on the holding knobs.
  • the task also includes eliminating the disadvantages of the holding knobs described above.
  • efforts are being made to integrate other functions that are generally useful for pipe fittings.
  • FIG. 1 shows a longitudinal section through a union nut with a cutting ring fastened by adhesive
  • FIG. 2 shows a longitudinal section through a union nut with a cutting ring fastened by pressing a plastic or elastomer ring
  • Figure 3a shows a longitudinal section through a union nut with a plastic, elastomer ring or Velcro ring with grooves and webs attached cutting ring;
  • Figure 3b is a plan view of a plastic, elastomer ring or Velcro ring with grooves and ridges;
  • FIG. 4a shows a longitudinal section through a union nut with a plastic or elastomer ring with Velcro arranged on a cutting ring;
  • Figure 4b is a plan view of a plastic or elastomer ring with attached to the outer circumference
  • FIG. 5a shows a longitudinal section through a union nut with a plastic or elastomer ring with asymmetrically resilient molded elements arranged on the outside, which can rest on the ring circumference;
  • Figure 5b is a plan view of a plastic or elastomer ring with inclined in the circumferential direction
  • FIG. 5c shows an enlarged illustration of a molded element
  • Figure 6a shows a longitudinal section through a union nut with a plastic or elastomer ring with circular segment-shaped elastic webs attached cutting ring;
  • Figure 6b is a plan view of a plastic or elastomer ring according to Figure 6a.
  • FIG. 1 shows a longitudinal section through a union nut with a fixed cutting ring 2.
  • the union nut 1 is provided with an internal thread 3, which ends in the transition area 4.
  • the inner region is followed by an inner cone 5, which ends with the axially extending inner bore 6.
  • the cutting ring 2 has a cutting edge 7 which cuts into the casing of a pipe (not shown) during the pipe assembly.
  • the cutting ring 2 has various outer ring surfaces, such as a conical outer ring surface 8, the conicity of which is adapted to the inner cone 5 of the union nut, and a cylindrical outer ring surface 9.
  • the conical outer ring surface 8 of the cutting ring 2 there is adhesive or a double-sided adhesive tape 10 on the conical outer ring surface 8 of the cutting ring 2.
  • This adhesive or adhesive tape 10 is applied in the factory to the conical outer ring surface 8, after which the cutting ring is inserted centrally into the threaded bore of the union nut lets until the adhesive or the adhesive outer surface of the adhesive tape 10 comes to rest on the inner cone 5 of the union nut and adheres there.
  • This results in a cutting ring set that can be stored and fed to an assembly location at which a safe assembly can be carried out while avoiding the typical assembly errors.
  • Figure 2 shows the same components as union nut 1 and cutting ring 2, but with a plastic or elastomer ring 11 which is attached to the cylindrical outer ring surface 9 of the cutting ring 2.
  • the plastic or elastomer ring 11 is attached to the cutting ring 2 in the factory by a press fit, for example by means of thermal treatment.
  • FIGS. 3a and 3b show a further embodiment of the invention.
  • the fastening means of the plastic or elastomer ring 13 consist of webs 14 and grooves 15, similar to a gearwheel which engages in the teeth of the thread 3 of the union nut.
  • Figures 4a and 4b represent a further embodiment of the invention, which is based on a different fastening principle.
  • the fastening means of the plastic or elastomer ring 16 consist of resilient, radially directed resilient elements 17 arranged on the circumference of the ring 16, similar to the Velcro of a Velcro fastener.
  • the spring elasticity of the elements 17 permits easy axial insertion of the cutting ring 2 into the threaded bore of the union nut 1 while exerting a pressure by hand, while the spring-elastic elements 17 do not hinder the screwing.
  • FIGS. 5a, 5b and 5c show yet another exemplary embodiment which is based on a fastening principle which corresponds to the embodiment according to FIGS. 4a and 4b.
  • the plastic or elastomer ring 18 is in this case equipped with webs 19, which are resilient in the circumferential direction of the ring 18, such that they press against and tighten into the thread 3 of the union nut 1 on the circumference of the ring 18 and so a small initial driving torque Cause resistance, while they cause increased frictional resistance on the thread wall of the thread 3 in the direction of rotation.
  • the ends of the webs 19 have an oblique cut, as can be seen from FIG. 5c, the tips of which engage in the wall of the thread 3.
  • the webs 19 In order to increase the frictional resistance in the turning direction, the webs 19 have an asymmetrical profile, as a result of which not only the tips of the webs 19 capture the thread walls, but also their side edges in an inclined position to the thread surface. The webs 19 therefore exert an increased clamping action when unscrewing, which makes automatic loosening of the assembled pipe connection difficult.
  • FIGS. 6a and 6b show a further embodiment of the invention.
  • the plastic or elastomer ring 20 is here provided with shaped elements which are designed as spring-elastic ring segments 21.
  • the spring-elastic deflection takes place in the axial direction of the clothing.
  • the cutting ring can be screwed into the bore of the union nut, the ring segments being guided by the internal thread 3 of the union nut 1.
  • the spring elasticity of the ring segments 21 also allows the cutting ring 2 to be introduced into the bore in the axial direction, a corresponding counterforce having to be applied to overcome the spring forces.
  • an annular sheet-metal profile element can have resilient gripping elements on its two outer edges, the spring effects of which are directed radially.
  • a sheet metal profile element can be applied in the factory on the cylindrical outer ring surface of the cutting ring 2, the fastening being carried out by the gripping elements, which each grip the subsequent conical ring surfaces of the cutting ring.
  • the different embodiments of the adhesive and their connection with the two clothing elements still allow for various variations which are within the scope of the invention.
  • the plastic or elastomer rings can consist of a rubber or fabric band, which extend around the cutting ring in a circular or segmental shape.
  • the fabric tape can be designed to be double-sided adhesive or one-sided adhesive, the other side being provided with one of the aforementioned fastening means.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

L'invention concerne un ensemble bague coupante, constitué d'un écrou-raccord et d'au moins une bague de coupe, pour la fabrication de raccords vissés. Une surface de bague extérieure (8, 9) conique ou cylindrique de la bague de coupe (2), ou une surface intérieure (5, 3) conique ou cylindrique correspondante de l'écrou-raccord (1), présente un moyen servant à fixer l'écrou-raccord sur au moins une bague de coupe. Ce moyen de fixation de l'écrou-raccord (1) sur au moins une bague de coupe (2) est soit conçu sous forme de matériau de liaison soit constitué d'un anneau plastique ou élastomère (11, 13, 16, 18), dont le diamètre extérieur est adapté au diamètre de filet de la surface intérieure correspondante de l'écrou-raccord (1). Cet anneau plastique ou élastomère (11) est placé ou appliqué par pression sur la surface extérieure correspondante (9) de la bague de coupe (2) ou la surface intérieure correspondante (4,3) de l'écrou-raccord (1), de manière à obtenir un ajustage serré. Dans un autre mode de réalisation, cet anneau plastique ou élastomère (11) est collé sur la surface extérieure correspondante (9) de la bague de coupe (2) ou la surface intérieure correspondante (5) de l'écrou-raccord (1). Des anneaux plastiques ou élastomères présentant des éléments de fixation tels que des nervures, des rainures ou des saillies peuvent également être utilisés.
PCT/DE2001/004196 2000-11-13 2001-11-06 Ensemble bague coupante WO2002039001A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002215847A AU2002215847A1 (en) 2000-11-13 2001-11-06 Cutting ring fitting
EP01993788A EP1334303A1 (fr) 2000-11-13 2001-11-06 Ensemble bague coupante

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10056236.1 2000-11-13
DE2000156236 DE10056236A1 (de) 2000-11-13 2000-11-13 Schneidringgarnitur

Publications (1)

Publication Number Publication Date
WO2002039001A1 true WO2002039001A1 (fr) 2002-05-16

Family

ID=7663154

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/004196 WO2002039001A1 (fr) 2000-11-13 2001-11-06 Ensemble bague coupante

Country Status (4)

Country Link
EP (1) EP1334303A1 (fr)
AU (1) AU2002215847A1 (fr)
DE (1) DE10056236A1 (fr)
WO (1) WO2002039001A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10256734B4 (de) * 2002-07-03 2014-09-04 Continental Teves Ag & Co. Ohg Verfahren zur Überwachung und Erkennung der Montagerichtung des Stößels eines Elektromagnetventils und Elektromagnetventil für das Verfahren

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2779610A (en) * 1950-05-23 1957-01-29 Dresser Ind Sealed pipe coupling with constrictible wedge bushing
US3248135A (en) * 1963-05-27 1966-04-26 Liberty Mfg Company Of Texas Sealed slip joint coupling
DE2222290A1 (de) * 1972-05-06 1973-11-22 Rheinisches Metallwerk Gmbh Muffenverbindung fuer rohre, armaturen oder dgl
WO1994015131A1 (fr) * 1992-12-24 1994-07-07 F.W. Talbot And Company Limited Raccords
US5961160A (en) * 1995-08-16 1999-10-05 Froehlich; Manfred High-pressure connection system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038539C1 (fr) * 1990-12-03 1992-04-30 Parker-Ermeto Gmbh, 4800 Bielefeld, De
DE19637129C2 (de) * 1995-10-30 1999-01-28 Walterscheid Gmbh Jean Verbindung zum Anschluß von Rohren an einen Verbindungskörper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2779610A (en) * 1950-05-23 1957-01-29 Dresser Ind Sealed pipe coupling with constrictible wedge bushing
US3248135A (en) * 1963-05-27 1966-04-26 Liberty Mfg Company Of Texas Sealed slip joint coupling
DE2222290A1 (de) * 1972-05-06 1973-11-22 Rheinisches Metallwerk Gmbh Muffenverbindung fuer rohre, armaturen oder dgl
WO1994015131A1 (fr) * 1992-12-24 1994-07-07 F.W. Talbot And Company Limited Raccords
US5961160A (en) * 1995-08-16 1999-10-05 Froehlich; Manfred High-pressure connection system

Also Published As

Publication number Publication date
DE10056236A1 (de) 2002-06-06
AU2002215847A1 (en) 2002-05-21
EP1334303A1 (fr) 2003-08-13

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