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WO1995000793A1 - Accouplement rapide pour tubes - Google Patents

Accouplement rapide pour tubes Download PDF

Info

Publication number
WO1995000793A1
WO1995000793A1 PCT/NO1994/000126 NO9400126W WO9500793A1 WO 1995000793 A1 WO1995000793 A1 WO 1995000793A1 NO 9400126 W NO9400126 W NO 9400126W WO 9500793 A1 WO9500793 A1 WO 9500793A1
Authority
WO
WIPO (PCT)
Prior art keywords
female part
gripping element
main piece
gripping
male part
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.)
Ceased
Application number
PCT/NO1994/000126
Other languages
English (en)
Inventor
Manfred Schlaupitz
Hans Peter Havdal
Tore Pedersen
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.)
Kongsberg Automotive ASA
Kongsberg Automotive AS
Original Assignee
Kongsberg Automotive ASA
Kongsberg Automotive AS
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 Kongsberg Automotive ASA, Kongsberg Automotive AS filed Critical Kongsberg Automotive ASA
Publication of WO1995000793A1 publication Critical patent/WO1995000793A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/098—Couplings 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 flexible hooks
    • F16L37/0985—Couplings 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 flexible hooks the flexible hook extending radially inwardly from an outer part and engaging a bead, recess or the like on an inner part
    • F16L37/0987—Couplings 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 flexible hooks the flexible hook extending radially inwardly from an outer part and engaging a bead, recess or the like on an inner part the flexible hook being progressively compressed by axial tensile loads acting on the coupling

Definitions

  • the invention concerns a quick coupling as specified in the introduction to claim 1.
  • the object of the invention is to provide a rapid coupling of the type mentioned in the introduction whereby the above-mentioned requirements are fulfilled.
  • - Fig. 1 shows a longitudinal section through an assembled quick coupling where a section of the coupling's female part and the pipe with which the coupling's male part is connected are cut away.
  • - Fig. 2 is a perspective view of a gripping element.
  • FIG. 3 shows a section through the gripping element which is illustrated in fig. 2 and along line III-III in this figure.
  • the quick coupling comprises a male part 1 with a main piece 3 and a female part 2 with a main piece 4.
  • the main piece 3 of the male part has a through-going, axially extending bore 5, through which there extends a pipe 6 of a pressure fluid system (not shown in more detail).
  • the pipe 6 is attached to the main piece 3 by means of a conical sleeve 7 which is passed over the pipe 6 and wedged sealingly between the pipe 6 and the main piece 3 in a correspondingly shaped enlarged portion of the bore 5 of the main piece 3.
  • Fig. 1 also illustrates that the female part 2 has a through bore 8 with a diameter which corresponds to the internal diameter of the pipe 6, and that the male part's and the female part's bores 5 and 8 respectively are coaxial.
  • the male part's main piece 3 comprises a cylindrical section 9 which is inserted into a bore 10 of the female part 2 in the illustrated position, in which the male part and the female part are connected.
  • the end section of the pipe 6 has an enlarged portion 11. Between this enlarged portion 11 and the adjacent end section of the main piece 3 there is provided a seal 12, which abuts against the wall of the bore 10 and seals the connection between the main pieces 3,4.
  • the axially outer, i.e. the free end section of the female part's main piece has a cylindrical, outer surface 20. At the axially inner end of this surface 20 of the female part 2 there is provided a radially inwardly extending, circumferential groove 21.
  • the male part's main piece 3 i.e. the end which is located above, i.e. opposite the free end of the main piece 3, it has a radially outwardly projecting shoulder portion 30 whose diameter corresponds to the diameter of the cylindrical surface 20 of the female part 2.
  • the shoulder portion 30 has an axially inwardly facing and radially extending shoulder surface 31.
  • a radially inwardly projecting bead or shoulder-shaped portion 43 which is arranged to project into the groove 21 of the female part 2 in order thereby to prevent mutual axial movement of the female part 2 and the gripping elements 41,42.
  • the axially inner end section of the gripping element is provided with an outwardly projecting, rounded knob 52.
  • a number of axially inwardly projecting fingers 45 At a distance from the outer end of the gripping element 41,42, by means of through-going slits or slots 44 in the wall of the gripping element, there are provided a number of axially inwardly projecting fingers 45.
  • the finger roots are thus interconnected via a semicircular portion 46.
  • Near the finger tip portion 50 there is provided on the inner wall of each finger a gripping hook portion 47 with an axially and radially inwardly extending surface portion 48, which thus extends obliquely in relation to the coupling's longitudinal axis, and a shoulder surface 49, which extends radially inwards from this surface section's inner termination.
  • the gripping element Due to the spring properties of the material of which the gripping element is made, such as plastic, spring steel, etc., and the shape and thickness of the fingers, they are elastically flexible radially inwards and outwards.
  • the diameter of the circular line on which the gripping hook portion's radially inner termina ⁇ tion or edge is located, is smaller than the diameter of the male part's shoulder portion 30 when the fingers are not influenced by a force which attempts to bend them.
  • a sleeve-shaped locking member 60 On the outside of the axially inner section of the gripping elements there is passed a sleeve-shaped locking member 60 whose internal diameter approximately corresponds to the external diameter of the gripping elements 41,42 and in whose inner wall there is formed a depression 61 with a shape which is adapted to the shape of the knob 52 of the gripping element.
  • the knobs 52 are located diametrically opposite each other.
  • the diameter on which the tops of the knobs are located is slightly larger than the internal diameter of the locking member 60.
  • the quick coupling is used in the following manner.
  • the sleeve-shaped locking member 60 is then passed over the gripping elements 41,42 until the knobs 52 by means of a snap effect are caused to slip into their respective depressions 61.
  • the gripping elements 41,42 are thereby attached to the female part 2 and safeguarded against axial as well as radial movement in relation to the latter.
  • the locking member 60 is similarly secured.
  • the male part 1 is then inserted into the female part 2, in the course of which the shoulder section 30 is brought into abutment against the oblique surface portion 48, thereby forcing the fingers 45 radially outwards during the continued insertion of the male part 1.
  • the shoulder surface 49 of the gripping hook portion 47 passes the shoulder surface 31 of the shoulder portion 30, whereupon the fingers 45 springingly return to their unloaded position, and any movement of the male part away from the female part is prevented by the mutual abutment of the shoulder surfaces 31, 49.
  • the locking member 60 When the coupling is disconnected the locking member 60 is pulled axially out ⁇ wards from the female part 2 and past the gripping elements 41,42. These are then loose and can easily be removed by hand, after which the male part 1 can be pulled out of the female part 2.
  • the locking member can have two depressions 61 for snap-like reception of the respective knobs 52.
  • the securing of the locking member and the gripping elements 41,42 relative to each other, which prevents the locking member from being inadvertently moved axially away from the position in which it secures the gripping elements, can of course be implemented in another way, e.g. where the locking member as in a bayonet coupling has two diametrically oppositely located L-shaped slits into which the respective knobs 52 can be introduced.
  • the slit it can be ensured that the locking member cannot be inadvertently turned away from the position in which it secures the gripping elements 41,42.

Landscapes

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

Abstract

Accouplement rapide pour systèmes de fluides sous-pression comportant une partie mâle (1) s'insérant dans une partie femelle (2). La partie femelle (2) comporte au moins un élement d'accrochage (41, 42) verrouillé par un élément de blocage (60) de façon à empêcher l'élément d'accrochage (41, 42) de se déplacer selon l'axe longitudinal de la partie femelle (2). L'élément d'accrochage (41, 42) présente au moins une partie en crochet (47) saillant radialement vers l'intérieur, à effet de ressort dans le sens radial, et conçue pour être repoussée radialement vers l'extérieur par un épaulement (30) que présente la partie mâle (1) lorsque la partie en crochet (47) passe sur l'épaulement (30) au moment où la partie mâle (1) s'insère dans la partie femelle (2), puis pour revenir en place et s'engager dans l'épaulement (31) de la partie mâle. En déverrouillant l'élément de blocage (60), on dégage l'élément d'accrochage (41, 42) de l'épaulement (30).
PCT/NO1994/000126 1993-06-22 1994-06-22 Accouplement rapide pour tubes Ceased WO1995000793A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO932292 1993-06-22
NO932292A NO932292L (no) 1993-06-22 1993-06-22 Hurtigkobling

Publications (1)

Publication Number Publication Date
WO1995000793A1 true WO1995000793A1 (fr) 1995-01-05

Family

ID=19896201

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1994/000126 Ceased WO1995000793A1 (fr) 1993-06-22 1994-06-22 Accouplement rapide pour tubes

Country Status (2)

Country Link
NO (1) NO932292L (fr)
WO (1) WO1995000793A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031409A2 (fr) * 1979-12-27 1981-07-08 Armaturenfabrik Hermann Voss GmbH + Co. Dispositif de connexion enfichable à verrouillage à déclic
DE3137307A1 (de) * 1980-10-30 1982-08-26 General Motors Corp., Detroit, Mich. Schnellkupplung fuer hydraulische leitungen
GB2222218A (en) * 1988-08-26 1990-02-28 Usui Kokusai Sangyo Kk Push fit pipe connector.
DE3929723A1 (de) * 1988-12-12 1990-06-13 Aeroquip Ag Integrierter schnellverbindender rohrverbinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031409A2 (fr) * 1979-12-27 1981-07-08 Armaturenfabrik Hermann Voss GmbH + Co. Dispositif de connexion enfichable à verrouillage à déclic
DE3137307A1 (de) * 1980-10-30 1982-08-26 General Motors Corp., Detroit, Mich. Schnellkupplung fuer hydraulische leitungen
GB2222218A (en) * 1988-08-26 1990-02-28 Usui Kokusai Sangyo Kk Push fit pipe connector.
DE3929723A1 (de) * 1988-12-12 1990-06-13 Aeroquip Ag Integrierter schnellverbindender rohrverbinder

Also Published As

Publication number Publication date
NO932292D0 (no) 1993-06-22
NO932292L (no) 1994-12-23

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