WO1995023311A1 - Raccord de tuyauterie - Google Patents

Raccord de tuyauterie Download PDF

Info

Publication number
WO1995023311A1
WO1995023311A1 PCT/GB1995/000395 GB9500395W WO9523311A1 WO 1995023311 A1 WO1995023311 A1 WO 1995023311A1 GB 9500395 W GB9500395 W GB 9500395W WO 9523311 A1 WO9523311 A1 WO 9523311A1
Authority
WO
WIPO (PCT)
Prior art keywords
socket
guide surface
collet
pipe
tongues
Prior art date
Application number
PCT/GB1995/000395
Other languages
English (en)
Inventor
Anthony Robson
Original Assignee
Royack Limited
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 Royack Limited filed Critical Royack Limited
Priority to AU17153/95A priority Critical patent/AU1715395A/en
Publication of WO1995023311A1 publication Critical patent/WO1995023311A1/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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/10—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using a rotary external sleeve or ring on one part
    • F16L37/103—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using a rotary external sleeve or ring on one part the connection being maintained by the eccentricity of the two parts of the joint

Definitions

  • This invention relates to a pipe coupling for receiving one end of a length of pipe, tube, tubing, tubular portion of a fitting, or a pipe section, and all of which are intended to come within the definition of the term "a pipe section of the pipe specified".
  • the present invention therefore seeks to provide a simplified type of coupling arrangement, and which can be operated simply and reliably and on a repeatable basis without undue wear occurring.
  • a pipe coupling for receiving one end of a pipe section of the type specified, said coupling comprising: a tubular body having a receiving socket at one end; and a resiliently deformable gripping collet receivable by said socket and having a number of circumferentially spaced gripping tongues, said tongues extending generally parallel to the axis of the tubular body and having inwardly extending gripping teeth to grip the outer periphery of a pipe section when the latter is entered into the coupling; in which the socket includes an inwardly facing guide surface which is engageable with at least part of the outer periphery of said tongues, said guide surface having such a profile that the collet can be turned relatively thereto through an angle of less than 360° about the axis of the tubular body between a release position and a clamping position with respect to a pipe section to be received by the socket.
  • the collet has three gripping tongues, spaced equally about the axis of the tubular body i.e. at 120° spacing between each adjacent pair of tongues, and a complementary profile of the guide surface may be provided, allowing relative rotation through a relatively small angle between the release position and the clamping position.
  • the guide surface provided in the socket is a generally annular surface, but with circumferentially spaced cam portions spaced a smaller distance from the central axis of the collet than the remainder of the guide surface which preferably comprises a number of circumferentially spaced arcuate portions of the same radius.
  • Figure 1 is a general assembly view of a pipe coupling according to the invention, receiving one end of a pipe section of the type specified;
  • Figure 2 is a longitudinal cross sectional view of a tubular body of the pipe coupling according to the invention.
  • Figure 3 is a section taken on the line Y-Y in Figure 2;
  • Figure 4 is an end view of a resiliently deformable gripping collet which is receivable by a socket portion of the tubular body; and.
  • Figure 5 is a side view of the collet shown in Figure 4.
  • a pipe coupling according to the invention is designated generally by reference 10 and is intended to receive one end of a pipe section of the pipe specified, and which in the illustrated embodiment comprises a pipe end 11.
  • the pipe coupling 10 comprises a tubular body 12, which has a receiving socket 13 at one end.
  • the body 12 may form any convenient part of a connecting sleeve or pipe joint.
  • a resiliently deformable gripping collet 14 can be received by socket 13, and has a number of circumferentially spaced gripping tongues, and which in the illustrated arrangement comprises three tongues 15 which are spaced apart by 120° from each other about the general axis 16 of the pipe coupling in general, and of tubular body 12 and collet 14 in particular.
  • the tongues 15 extend generally parallel to the axis 16, and have inwardly extending gripping teeth 17 to grip the outer periphery of pipe section 11 when the latter is entered into the coupling 10.
  • the socket 13 includes a generally annular inwardly facing guide surface 18 and which is engageable with at least part of the outer peripheries of the tongues 15, this guide surface 18 having such a profile that relative turning movement through a relatively small angle between collet 14 and tubular body 10 and about axis 16 enables the pipe coupling to be converted between a release mode and a clamping mode with respect to pipe section 11.
  • the generally annular guide surface 18 has circumferentially spaced arcuate portions of constant radius, and also includes inwardly projecting cam portions of smaller radial spacing from axis 16, and which are effective to apply radial inward force on the tongues 15 when the pipe coupling is converted to the clamping mode.
  • the tongues 15 are preferably of identical construction, and the inner diameter of the collet 14 and of tongues 15 are designed to provide a tolerance fit at a greater diameter than that of pipe section 11, to allow insertion of the pipe section 11, when the pipe coupling is in the release mode.
  • the collet 14 is located in the socket 13 of pipe coupling 12, and both collet 14 and the socket 13 have identical tapered sections.
  • the inside diameter of the socket 13, at its greatest diameter (generally annular guide surface 18) is of non-symmetrical shape, being composed of circumferentially spaced arcuate portions of radius R,, and inwardly projecting cam portions of smaller radial spacing from axis 16, and of which one is shown by radius line R 2 .
  • R 2 is greater than R, it will be noticed that the centre of curvature of radius line R 2 is spaced from the axis 16. Therefore, the effective diameter of this portion of guide surface 18, relative to axis 16, is less than radius R i r and therefore a cam feature is provided.
  • the tongues 15 of the collet 14 are located in the respective portions of the socket having radius R t .
  • the tongues 15 move into engagement with the inwardly projecting cam portions having radius R 2 , and are therefore driven inwards into biting / gripping contact with the outer periphery of pipe section 11, to provide the clamped mode of the pipe coupling.
  • the tapered body and collet sections interact to increase the inward displacement of the collet, to further improve the clamping action.

Landscapes

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

Abstract

L'invention concerne un raccord de tuyauterie (10) destiné à recevoir une extrémité d'un tronçon de tuyau (11). Le raccord de tuyauterie comprend un corps tubulaire (12) muni en une extrémité d'un embout femelle (13), dans laquelle s'adapte une douille de serrage (14) élastiquement déformable d'un ensemble de languettes de serrage circomférentiellement espacées (15) et placées généralement parallèlement à l'axe du corps tubulaire. Lesdites languettes comportent des dents de serrage (17) s'étendant vers l'intérieur et conçues pour serrer la périphérie externe du tronçon de tuyau (11) lorsque ce dernier est introduit dans l'embout femelle. Cet embout (13) présente une surface de guidage (18) tournée vers l'intérieur et pouvant venir en contact dans au moins une partie de la périphérie externe des languettes (15), ladite surface de guidage présentant un profil tel que l'on puisse imprimer une rotation à la douille (14) par rapport à celle-ci selon un angle relativement faible autour de l'axe (16) du raccord de tuyau. Ainsi, ledit raccord peut être utilisé soit un mode de libération soit un mode de serrage par rapport au tronçon de tuyau (11).
PCT/GB1995/000395 1994-02-28 1995-02-24 Raccord de tuyauterie WO1995023311A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU17153/95A AU1715395A (en) 1994-02-28 1995-02-24 Pipe coupling

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9403785A GB9403785D0 (en) 1994-02-28 1994-02-28 Pipe coupling
GB9403785.0 1994-02-28

Publications (1)

Publication Number Publication Date
WO1995023311A1 true WO1995023311A1 (fr) 1995-08-31

Family

ID=10751025

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1995/000395 WO1995023311A1 (fr) 1994-02-28 1995-02-24 Raccord de tuyauterie

Country Status (3)

Country Link
AU (1) AU1715395A (fr)
GB (1) GB9403785D0 (fr)
WO (1) WO1995023311A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2334562A (en) * 1998-02-20 1999-08-25 Eden Limited A connector
WO2016149745A1 (fr) * 2015-03-23 2016-09-29 Crism Pty Ltd Appareil et procédé d'accouplement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR733690A (fr) * 1931-06-23 1932-10-10 Fr De Filetage Indesserrable D Système d'assemblage instantané
FR1581766A (fr) * 1968-08-01 1969-09-19
DE3214885A1 (de) * 1982-04-22 1983-10-27 Hendrik 4901 Hiddenhausen Holtrop Verbindungsvorrichtung fuer rohre
EP0333094A1 (fr) * 1988-03-17 1989-09-20 Lacrex S.A. Dispositif de jonction détachable pour tuyaux, tuyaux flexibles, barres ou même sorte

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR733690A (fr) * 1931-06-23 1932-10-10 Fr De Filetage Indesserrable D Système d'assemblage instantané
FR1581766A (fr) * 1968-08-01 1969-09-19
DE3214885A1 (de) * 1982-04-22 1983-10-27 Hendrik 4901 Hiddenhausen Holtrop Verbindungsvorrichtung fuer rohre
EP0333094A1 (fr) * 1988-03-17 1989-09-20 Lacrex S.A. Dispositif de jonction détachable pour tuyaux, tuyaux flexibles, barres ou même sorte

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2334562A (en) * 1998-02-20 1999-08-25 Eden Limited A connector
GB2334562B (en) * 1998-02-20 2003-04-23 Eden Ltd A connector
WO2016149745A1 (fr) * 2015-03-23 2016-09-29 Crism Pty Ltd Appareil et procédé d'accouplement
GB2549057A (en) * 2015-03-23 2017-10-04 Crism Pty Ltd Apparatus and method for coupling
GB2549057B (en) * 2015-03-23 2018-04-11 Crism Pty Ltd Apparatus and method for coupling
US10378687B2 (en) 2015-03-23 2019-08-13 Crism Pty Ltd Apparatus and method for coupling
AU2016236830B2 (en) * 2015-03-23 2019-09-12 Crism Pty Ltd Apparatus and method for coupling
US11480276B2 (en) 2015-03-23 2022-10-25 Crism Pty Ltd Apparatus and method for coupling

Also Published As

Publication number Publication date
AU1715395A (en) 1995-09-11
GB9403785D0 (en) 1994-04-20

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