DE1285808B - Positive, detachable plug-in pipe coupling - Google Patents

Positive, detachable plug-in pipe coupling

Info

Publication number
DE1285808B
DE1285808B DEA39068A DEA0039068A DE1285808B DE 1285808 B DE1285808 B DE 1285808B DE A39068 A DEA39068 A DE A39068A DE A0039068 A DEA0039068 A DE A0039068A DE 1285808 B DE1285808 B DE 1285808B
Authority
DE
Germany
Prior art keywords
ring
groove
socket
pipe
snap ring
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
Application number
DEA39068A
Other languages
German (de)
Inventor
Sanders Ralph M
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automatic Sprinkler Corp
Original Assignee
Automatic Sprinkler Corp
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 Automatic Sprinkler Corp filed Critical Automatic Sprinkler Corp
Priority to DEA39068A priority Critical patent/DE1285808B/en
Publication of DE1285808B publication Critical patent/DE1285808B/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/08Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/088Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring
    • F16L37/0885Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring with access to the split elastic ring from a radial or tangential opening in the coupling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/08Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0927Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector the wedge element being axially displaceable for releasing the coupling

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Description

Die Erfindung betrifft eine formschlüssige, lösbare Steck-Rohrkupplung mit einer Muffe, die nahe ihrem äußeren Ende eine Ringnut aufweist, in die ein radial einwärts federnder, von Hand radial auswärts zu spreizender Sprengring eingreift, der in Kuppelstellung andererseits in eine an der Außenseite des einzusteckenden Rohres angeordnete Ringnut eingreift, wobei zur Abdichtung ein Lippendichtungsring in einer eigenen, vor der Sprengring-Ringnut angeordneten Ringnut der Muffe eingesetzt ist.The invention relates to a form-fitting, detachable plug-in pipe coupling with a sleeve which near its outer end has an annular groove into which a radial inwardly resilient snap ring, which can be expanded radially outward by hand, engages, the one in the coupling position, on the other hand, in one on the outside of the one to be plugged in Pipe arranged annular groove engages, with a lip seal ring for sealing used in a separate, in front of the snap ring ring groove arranged in the sleeve ring groove is.

Bei den bekannten Dichtungen dieser Art (britische Patentschrift 570 671,' USA.-Patentschrift 2 901269) ist es nicht sicher, daß sie im Betriebe geschlossen bleiben. Denn ihre Sprengringe (sie .und die sie aufnehmenden Nuten der Rohre und der Muffe haben rechteckigen Querschnitt) werden in ihrer Betriebsstellung, d. h.- in ihrer radial - innren Stellung, nur durch ihre eigene Federkraft gehalten; sie können durch etwaige Unregelmäßigkeit, z. B. durch eine schräg verquetschte Stelle an einer Stirnfläche eines der Federringe oder einer der Ringnuten, trotz ihrer Federkraft ungewollt radial auswärts gedrückt werden, so daß die Kupplung sich löst. Diese Gefahr ist keineswegs gering; denn die Sprengringe dürfen, damit sie dem Spreizwerkzeug nicht allzuviel Widerstand bieten, nicht sehr steif, also nicht sehr dick sein, und daher ist die radiale Überdeckung der Stirnflächen (diese Überdeckung ist ja nur gleich der halben Dicke des Ringes) nur gering, und daher kann der Ring leicht durch irgendeine schräg verquetschte Stelle ungewollt aus der Nut herausgedrückt werden.With the known seals of this type (British Patent 570,671, ' USA. Patent 2,901269) it is not certain that they will remain closed in operation. Because their circlips (they .and the grooves of the pipes and the socket that accommodate them have a rectangular cross-section) are only held in their operating position, that is, in their radial inner position, by their own spring force; they can be caused by any irregularity, e.g. B. by an obliquely squeezed point on an end face of one of the spring washers or one of the annular grooves, despite their spring force inadvertently pressed radially outward, so that the clutch is released. This danger is by no means small; Because the snap rings, so that they do not offer too much resistance to the expanding tool, must not be very stiff, i.e. not very thick, and therefore the radial overlap of the end faces (this overlap is only half the thickness of the ring) is only slight, and therefore the ring can easily be inadvertently pushed out of the groove by any obliquely squeezed point.

Diese Gefahr soll durch die Erfindung beseitigt werden; es soll ungewollte Spreizurig der Sprengringe verhindert werden. Der Grundgedanke der Erfindung ist, den Ringraum der Muffe, in dem der Sprengring liegt, zum Muffenende hin kegelig zu verengen, also Spreizung des Ringes durch Formschluß zu verhindern.This risk is to be eliminated by the invention; it's supposed to be unwanted The snap rings are prevented from spreading. The basic idea of the invention is the annular space of the socket in which the snap ring is located is tapered towards the socket end to narrow, so to prevent spreading of the ring by positive locking.

Steck-Rohrkupplungen mit konischer Verengung der Muffe sind an sich vielfach bekannt (z. B. australische - Patentschrift 209 947, USA.-Patentschrift 2 797 937). Bei diesen wird der federnde Ring (das ist dort eine torusförmige Schraubenfeder), nachdem er in die an der Außenseite des Rohres befindliche Nut geschoben ist, von dem durch den Flüssigkeitsdruck verursachten Rohrschub in den verjüngten Kegelteil gedrückt. Der Ring federt jedoch nicht einwärts, sondern auswärts und muß daher beim Kuppeln, nachdem das Rohr in die Muffe gesteckt worden ist, vom Flüssigkeitsdruck durch den Dichtungsring - dieser liegt dort nicht in eigener Ringnut, sondern in der Federring-Nut -in den verjüngten Kegelteil geschoben werden, damit dieser ihn in die außen am Rohr befindliche Nut schiebt.Plug-in pipe couplings with a conical narrowing of the socket are inherent widely known (e.g. Australian patent 209,947, USA patent 2,797,937). In these, the resilient ring (that's a torus-shaped helical spring), after it is pushed into the groove located on the outside of the tube, of the pipe thrust caused by the fluid pressure into the tapered part of the cone pressed. However, the ring does not spring inwards, but outwards and must therefore when coupling, after the pipe has been inserted into the socket, from the fluid pressure through the sealing ring - this is not in its own ring groove, but in the lock washer groove-be pushed into the tapered cone part so that it can be into the groove on the outside of the pipe.

Bei diesen bekannten Bauarten wird sich daher der Dichtungsring schnell verschleißen; vor allem ist die Kupplung aber unsicher; denn wenn die gekuppelte Rohrleitung vorübergehend drucklos ist und dabei das Rohr durch irgendeine äußere Ursache einwärts und darauf, ehe der Flüssigkeitsdruck wiederkehrt, auswärts geschoben wird, löst sich die Kupplung. Die bekannten Bauarten haben schließlich noch die ebenfalls unerwünschte Eigenschaft, i daß der vom Flüssigkeitsdruck erzeugte und durch den Federring auf die Muffe übertragene Rohrschub großenteils oder ganz von der Kegelfläche aufgenommen wird, was natürlich zusätzliche Beanspruchungen der Muffe und des Rohres ergibt.In these known designs, the sealing ring will therefore quickly move wear out; but above all the coupling is unsafe; because when the coupled The pipeline is temporarily depressurized and the pipe is being passed through some external Cause inward and then, before the fluid pressure returns, pushed outward the clutch is released. After all, the well-known designs still have the also undesirable property that the fluid pressure generated and largely or entirely of the pipe thrust transferred to the socket by the spring ring the conical surface is added, which of course additional stresses on the Socket and the pipe results.

Diese Nachteile werden durch die Erfindung vermieden, die darin besteht, daß bei einer Vorrichtung der eingangs genannten Art in an sich bekannter Weise die Sprengring-Ringnut der Muffe mit kegeliger Verengung zum Muffenende hin ausgebildet ist und der Sprengring in Kuppelstellung an die äußere Stirnfläche der Ringnut anschlägt.These disadvantages are avoided by the invention, which consists in that in a device of the type mentioned in a manner known per se the snap ring ring groove of the socket is designed with a conical narrowing towards the socket end is and the snap ring strikes in the coupled position on the outer face of the annular groove.

In der Zeichnung ist als Beispiel der Erfindung eine Kupplung mit doppelseitiger Muffe und zwei Rohren dargestellt; es zeigt F i g. 1 einen Längsschnitt, und zwar rechts in Betriebsstellung, links während des Entkuppelns, F i g. 2 einen Querschnitt nach der Linie 2=2, F i g. 3 eine Teil-Seitenansicht.In the drawing, a coupling is shown as an example of the invention double-sided socket and two pipes shown; it shows F i g. 1 a longitudinal section, namely on the right in the operating position, on the left during uncoupling, FIG. 2 one Cross section along the line 2 = 2, F i g. 3 is a partial side view.

In der Muffe 10 sind zwei Sprengringe 11,12 in Ringnuten 15,16 und zwei Lippendichtungsringe 13, 14 in Ringnuten 17, 18 angeordnet. Die beiden Rohre 19,20 sind außen nahe ihrem Ende mit Nuten 21,22 versehen, in die"die" Sprengringe eingreifen. Der Querschnitt der Sprengringe ist kreisrund, was den Sprengringen das Gleiten am Kegel und in die Rohrnuten erleichtert; der Querschnitt dieser Nuten 21, 22 ist dementsprechend auch kreissegmentförmig. In der F i g. 2 ist -der Sprengring in seiner gespreizten Stellung in vollen. Linien, in seiner Betriebsstellung in gestrichelten Linien dargestellt. Die Enden 11 A,12 A der Sprengringe erstrecken sich durch Fenster 13 der Muffe- nach außen; das eine dieser Fenster ist länglich, um- das Sprengen des Ringes zu gestatten. Die die Sprengringe enthaltenden Nuten 15,16 haben am auswärtigen Ende ebene, zur Rohrachse senkrechte Anschlagflächen, an die sich die Sprengringe in Betriebsstellung in Folge des vom Flüssigkeitsdruck ausgeübten Rohrschubs anlegen; wie die F i g. 1 in ihrem rechten Teil zeigt, sind die Profile der-Sprengring-Nuten im Rohr und in der Muffe so gestaltet, daß der Sprengring vom Muffenkegel in seiner Rohrnut gehalten, also die Kupplung formschlüssig gehalten wird.In the sleeve 10, two snap rings 11, 12 are arranged in annular grooves 15, 16 and two lip sealing rings 13, 14 are arranged in annular grooves 17, 18. The two tubes 19, 20 are provided with grooves 21, 22 on the outside near their end, into which "the" snap rings engage. The cross-section of the snap rings is circular, which makes it easier for the snap rings to slide on the cone and into the pipe grooves; the cross section of these grooves 21, 22 is accordingly also in the shape of a segment of a circle. In FIG. 2 is -the snap ring in its spread position in full. Lines, shown in its operating position in dashed lines. The ends 11 A, 12 A of the snap rings extend through the window 13 of the socket to the outside; one of these windows is elongated to allow the ring to be blown apart. The grooves 15, 16 containing the snap rings have flat stop surfaces at the outward end, perpendicular to the tube axis, against which the snap rings rest in the operating position as a result of the tube thrust exerted by the liquid pressure; like the fig. 1 shows in its right-hand part, the profiles of the snap ring grooves in the pipe and in the socket are designed so that the snap ring is held by the socket cone in its pipe groove, i.e. the coupling is held in a form-fitting manner.

Auch die die Dichtungsringe enthaltenden Ringnuten 17,18 haben am auswärtigen Ende Stirnflächen-28, 29, an die sich die Dichtungsringe anlegen.The annular grooves 17, 18 containing the sealing rings also have on outward end end faces 28, 29 against which the sealing rings are placed.

Claims (1)

Patentanspruch: Formschlüssige, lösbare Steck-Rohrkupplung mit einer Muffe, die nahe ihrem äußeren Ende eine Ringnut aufweist, in die ein radial einwärts federnder, von Hand radial auswärts zu spreizender Sprengring eingreift, der in Kuppelstellung andererseits in eine an der Außenseite des einzusteckenden Rohres angeordnete Ringnut eingreift, wobei zur Abdichtung ein Lippendichdichtungsring in einer eigenen, vor der Sprengring-Ringnut angeordneten Ringnut der Muffe eingesetzt,ist, dadurch gekennzeichnet, daß in an sich bekannter Weise die Sprengring-Ringnut der Muffe mit kegeliger Verengung zum Muffenende hin ausgebildet ist und der Sprengring in Kuppelstellung an die äußere Stirnfläche der Ringnut anschlägt.Claim: Positive, detachable plug-in pipe coupling with a Sleeve which near its outer end has an annular groove into which a radially inward resilient snap ring, which can be expanded radially outwards by hand, engages in Coupling position on the other hand in one on the outside of the pipe to be inserted arranged annular groove engages, with a lip seal sealing ring for sealing is inserted in a separate, in front of the snap ring ring groove of the sleeve arranged in front of the ring groove, characterized in that the snap ring ring groove of the known manner The socket is designed with a conical constriction towards the socket end and the snap ring strikes in the coupled position on the outer face of the annular groove.
DEA39068A 1961-12-20 1961-12-20 Positive, detachable plug-in pipe coupling Pending DE1285808B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA39068A DE1285808B (en) 1961-12-20 1961-12-20 Positive, detachable plug-in pipe coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA39068A DE1285808B (en) 1961-12-20 1961-12-20 Positive, detachable plug-in pipe coupling

Publications (1)

Publication Number Publication Date
DE1285808B true DE1285808B (en) 1968-12-19

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ID=6931161

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA39068A Pending DE1285808B (en) 1961-12-20 1961-12-20 Positive, detachable plug-in pipe coupling

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DE (1) DE1285808B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0784183A1 (en) * 1994-06-20 1997-07-16 Victaulic Company Of America Quick connect connector for grooved pipe

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182797A (en) * 1938-03-15 1939-12-12 Stephen V Dillon Gripping and coupling means
US2283975A (en) * 1940-12-06 1942-05-26 Stephen V Dillon Pipe coupling
GB570671A (en) * 1943-08-14 1945-07-17 Stewarts & Lloyds Ltd An improved joint for tubes, rods and like cylindrical members
US2797937A (en) * 1955-11-28 1957-07-02 Mcdowell Mfg Co Pressure responsive grip coupling
FR1174963A (en) * 1956-05-11 1959-03-18 Sociedade Tecnica De Hidraulic Automatic sealing gaskets
US2901269A (en) * 1957-01-31 1959-08-25 Mcdowell Mfg Co Split ring coupling
US2913263A (en) * 1957-07-05 1959-11-17 Zalo Mfg Company Pin detent pipe or tube coupling with manipulator
FR1224239A (en) * 1959-02-05 1960-06-22 Pechiney Prod Chimiques Sa Quick couplings for rigid pipes
US2950132A (en) * 1957-11-14 1960-08-23 Kocsuta Michael Threadless pipe coupling having a split ring locking means
AT210688B (en) * 1957-09-19 1960-08-25 Karl Ing Bengesser Coupling device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182797A (en) * 1938-03-15 1939-12-12 Stephen V Dillon Gripping and coupling means
US2283975A (en) * 1940-12-06 1942-05-26 Stephen V Dillon Pipe coupling
GB570671A (en) * 1943-08-14 1945-07-17 Stewarts & Lloyds Ltd An improved joint for tubes, rods and like cylindrical members
US2797937A (en) * 1955-11-28 1957-07-02 Mcdowell Mfg Co Pressure responsive grip coupling
FR1174963A (en) * 1956-05-11 1959-03-18 Sociedade Tecnica De Hidraulic Automatic sealing gaskets
US2901269A (en) * 1957-01-31 1959-08-25 Mcdowell Mfg Co Split ring coupling
US2913263A (en) * 1957-07-05 1959-11-17 Zalo Mfg Company Pin detent pipe or tube coupling with manipulator
AT210688B (en) * 1957-09-19 1960-08-25 Karl Ing Bengesser Coupling device
US2950132A (en) * 1957-11-14 1960-08-23 Kocsuta Michael Threadless pipe coupling having a split ring locking means
FR1224239A (en) * 1959-02-05 1960-06-22 Pechiney Prod Chimiques Sa Quick couplings for rigid pipes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0784183A1 (en) * 1994-06-20 1997-07-16 Victaulic Company Of America Quick connect connector for grooved pipe

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