WO2001048414A1 - Device at clamp couplings - Google Patents

Device at clamp couplings Download PDF

Info

Publication number
WO2001048414A1
WO2001048414A1 PCT/SE2000/002507 SE0002507W WO0148414A1 WO 2001048414 A1 WO2001048414 A1 WO 2001048414A1 SE 0002507 W SE0002507 W SE 0002507W WO 0148414 A1 WO0148414 A1 WO 0148414A1
Authority
WO
WIPO (PCT)
Prior art keywords
supporting sleeve
tube
conical
compression means
compression
Prior art date
Application number
PCT/SE2000/002507
Other languages
French (fr)
Inventor
Berndt Larsson
Pär CLAESSON
Lars Nothall
Original Assignee
Gustavsberg Vårgårda Armatur Ab
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
Priority claimed from SE9904758A external-priority patent/SE515875C2/en
Application filed by Gustavsberg Vårgårda Armatur Ab filed Critical Gustavsberg Vårgårda Armatur Ab
Priority to AU24157/01A priority Critical patent/AU2415701A/en
Publication of WO2001048414A1 publication Critical patent/WO2001048414A1/en
Priority to DK200200899A priority patent/DK200200899A/en
Priority to FI20021183A priority patent/FI20021183A/en
Priority to NO20023027A priority patent/NO20023027D0/en

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
    • F16L19/06—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 in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • 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
    • F16L19/06—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 in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/065—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 in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring
    • 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
    • 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
    • F16L19/106—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 the ring comprising a shoulder against which the pipe end abuts
    • 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
    • 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
    • F16L33/24—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with parts screwed directly on or into the hose

Definitions

  • the present invention refers to a device at compression couplings of the kind comprising a conical or double-conical compression means which is threadable on an internally and outwardly smooth tube, hose or similar and a supporting sleeve which is insertable in or on the tube, which compression means cooperates with a conical or plane surface on a fitting part or the like.
  • the purpose of the invention is to provide a device at compression couplings, which is easy to mount and to dismount, • fits different types of tubes, hoses or the like, provides an effective sealing between the tube and the coupling, and prevents the supporting sleeve from unintentionally leaving its fully inserted position during the mounting.
  • FIG. 1 shows an exploded view of a first embodiment of a device at compression couplings according to the present invention.
  • Fig. 2 shows the parts of Fig. 1 in assembled state.
  • FIG. 3 shows an exploded view of a second embodiment of a compression coupling according to the invention.
  • Fig. 4 shows the coupling according to Fig. 3 in assembled state.
  • Fig. 5 shows an exploded view of a third embodiment of the parts forming the compression coupling.
  • Fig. 6 shows the compression coupling according to Fig. 5 in a preassembled state before tightening.
  • Fig. 7 shows the compression coupling according to Fig. 6 after tightening.
  • the numeral 11 refers to a tube, 12 to a first fitting part, 13 to a compression sleeve, 14 to a supporting sleeve and 15 to a second fitting part.
  • the first fitting part 12 is a mixing tap connector
  • the second fitting part 15 is a mixing tap, which two parts can be screwed into each other.
  • the supporting sleeve 14 is provided with helical-shaped grooves in the form of self- tapping threads 16, which crests 17 are suitably directed along the pull out direction of the supporting sleeve.
  • the thread profile can also be trapezoid, round or square.
  • a key g ⁇ p 18 is provided in one end of the supporting sleeve 14, which key g ⁇ p 18 can be formed either outside or inside the supporting sleeve 14
  • the key g ⁇ p 18 can be formed as a socket head cap g ⁇ p, screwd ⁇ ver groove or the like, which does not need special tools.
  • the g ⁇ p can be formed by the outside of the supporting sleeve.
  • the supporting sleeve 14 is designed with a pe ⁇ pheral flange 19 with an internal conical contact surface 20
  • the flange 19 has an outer conical form 21 and on a portion of this outer conical form, a pe ⁇ pheral groove 22 is provided for a sealing ⁇ ng 23
  • the compression sleeve 13 is made of a polyme ⁇ c mate ⁇ al having sp ⁇ ng back characte ⁇ stics and it is preferably made with a curved outside and a radial slit 24.
  • Du ⁇ ng assembly (Fig. 2) of the different parts (Fig. 1), the mixing tap connector 12, followed by the compression sleeve 13, are thread on the tube. Thereafter, the supporting sleeve 14 is pushed or screwed into the tube 11 with help of the self-tapping threads 16, which may eventually cut into the tube mate ⁇ al du ⁇ ng mounting. In a known way, the compression sleeve will be compressed when the fitting parts 12 and 15 are screwed towards each other, whereby the threads 16 will be entirely forced into the inside wall of the tube. Du ⁇ ng dismounting, the threads that have been cut in the tube 11 will cooperate with the outer threads 16 in the supporting sleeve
  • the first conical contact surface 25 of the compression sleeve 13 will cooperate with a conical surface 26 on the mixing tap connector 12.
  • the internal, conical contact surface 20 of the supporting sleeve 14 cooperates with the second conical contact surface 27 of the compression sleeve at the same time as the outer conical form 21 of the supporting member 14 cooperates with a corresponding conical surface 28 on the mixing tap 15 to attain a tight coupling between the mixing tap 15 and the mixing tap connector 12
  • the embodiment in Fig 3 and 4 can be distinguished from the embodiment in Fig 1 and Fig. 2 in that the sealing nng 23 has been removed and replaced with a separate seal 29 which is freely mounted between the supporting sleeve 14 and the mixing tap 15.
  • the supporting sleeve 14 and the compression sleeve 13 lack conical contact surfaces and the pe ⁇ pheral flange 19 of the supporting sleeve lacks an internal conical contact surface, instead the flange is substantially smooth and perpendicular to the axial direction of the sleeve 14.
  • the compression sleeve 13 is single-conical, which means that the contact between the supporting sleeve 14 and the compression sleeve 13 is made between the smooth, pe ⁇ pheral flange surface 30 and the base surface 31 of the compression sleeve.
  • the mixing tap 15 is first screwed off the mixing tap connector 12, and with help from the key g ⁇ p 18 m the supporting sleeve 14, the supporting sleeve can be screwed off the tube 11 , which entails the compression sleeve 13, as well as the mixing tap connector 12, to be removed from the tube 11.
  • the compression sleeve and the supporting sleeve 14 are connected to each other via a transitional portion 32
  • the supporting sleeve 14 has an internal, through hole 33, working as a passage for a medium, for instance water.
  • a peripheral, conical surface 25 is provided on the outside of the transitional portion 32.
  • the outer surface of the supporting member 14 is provided with outer threads 16, and at least one outer, peripheral groove 34.
  • An annular recess 35 is provided between the compression means 13 and the supporting sleeve 14, which terminates in an inner end surface 36, which is substantially parallel with the end surface of the supporting sleeve.
  • the inner diameter of the tube 11 and the outer diameter of the supporting sleeve which is provided with threads are chosen so that the supporting sleeve is only insertable in the tube by using some violence.
  • the threads 16 are suitably self-tapping, the supporting sleeve can be threaded for instance manually. If the tube or the hose comprises a softer material it is also possible to drive the supporting sleeve by a number of hammer strokes.
  • the free, outer end of the compression means 13 is bevelled forming a conical contact surface 27, which is provided to cooperate with a corresponding internal conical surface 28 in the coupling nut 15.
  • the bevelled end 27 of the compression means 13 extends to an area substantially right in front of the peripheral groove 24 of the supporting sleeve.
  • the compression means can also be provided with helical-shaped threads 39, which threads can be provided on the inner surface of the compression means and are self-tapping, or as an alternative, arranged to produce corresponding helical-shaped threads in the tube when mounting the coupling.
  • These threads 39 which are shown in Fig. 5, provide a further improved connection between the supporting sleeve and the tube and moreover, they provide a more reliably mounting as it is easier to hold the supporting sleeve in correct position in the coupling during tightening.
  • the first coupling part 12 is formed with an internal conical contact surface 26 with substantially the same conicity as the conical contact surface 25 at the transitional portion 32. Both the contact surfaces 26 and 25 are arranged to tightly cooperate with each other when the coupling parts 12 and 15 are screwed together via outer threads on the first coupling part 12 and internal threads on the coupling nut 15. During the assembly (Fig. 6) of the different parts (Fig. 5), the coupling nut 15 is first thread onto the tube 11.
  • the supporting sleeve 14 is pressed into the tube 11 so far that the end 37 of the tube comes into contact with the inner end surface 36 of the compression means 13 and the compression means 13 over the end section of the tube 11, whereafter the coupling nut 15 can be screwed onto the first coupling part 12, as shown in Fig. 6.
  • the conical surface 28 is pressed towards the conical surfaces 27 of the compression means 13, whereby the free end of the compression means is pressed into the envelope surface 38 of the tube 11 and deforms the tube so much that tube material is pressed into the peripheral groove of the supporting sleeve 14. In this way, a reliable connection is provided between the tube 11 and the supporting sleeve 14, even to axial tensile forces, and a leak proof and reliable seal.
  • Fitting part e.g. mixing tap connector

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Clamps And Clips (AREA)

Abstract

Device at compression couplings of the kind comprising a conical or double-conical compression means (13) which is threadable on an internally and outwardly smooth tube (11), hose or similar and a supporting sleeve (14) which is insertable in or on the tube (11). The compression means (13) cooperates with a conical or plane surface (26) on a fitting part (12) or the like. The outer surface of the supporting sleeve (14) is provided with helical-shaped threads (16), which are thread-cutting during rotational threading of the tube, alternatively provided to produce corresponding helical-shaped threads during pressing of the compression means (13) on to the tube (11).

Description

DEVICE AT CLAMP COUPLINGS
The present invention refers to a device at compression couplings of the kind comprising a conical or double-conical compression means which is threadable on an internally and outwardly smooth tube, hose or similar and a supporting sleeve which is insertable in or on the tube, which compression means cooperates with a conical or plane surface on a fitting part or the like.
THE BACKGROUND OF THE INVENTION Compression couplings are previously known through for instance the Swedish published patent application 361350 describing a compression coupling for a mixing tap comprising a wall connector rail, seal, nut, compression sleeve, sealing ring and locking washer. However, this device is very difficult to dismount because the tube and the compression sleeve have been badly deformed by the force that was exerted during the assembly of the device.
Through EP 0 581 678 is known a compression coupling, where the tube has been provided with outer and inner threads, which cooperate with threads provided on the inside of the compression sleeve and on the outside of the supporting sleeve respectively. The aim achieved is that when the tube has been screwed down towards the bottom of the supporting sleeve, an integrated unit is formed by the tube and the compression sleeve. During continued rotation of the supporting sleeve, the outer threads of the tube will work against the inner threads of the compression sleeve and as the compression sleeve can be seen as a fixed part in relation to the outer threads of the tube, the conical surface of the supporting sleeve can be pressed against the conical surface of the compression sleeve, whereby a radial compression of the compression sleeve can be made. A further problem with the above mentioned compression couplings is that it is hard to know with certainty if the supporting sleeve during mounting is totally pressed into the tube or if it has been forced outwards a distance, which considerably deteriorates the compression effect.
THEPURPOSEOFTHEINVENTION AND THE SOLUTION OFTHE PROBLEM
The purpose of the invention is to provide a device at compression couplings, which is easy to mount and to dismount, • fits different types of tubes, hoses or the like, provides an effective sealing between the tube and the coupling, and prevents the supporting sleeve from unintentionally leaving its fully inserted position during the mounting.
The problems have been solved by the characteristics given in the claims.
DESCRIPTION OF THE DRAWINGS
In the following, the invention will be described in three embodiments with reference to the attached drawings. Fig. 1 shows an exploded view of a first embodiment of a device at compression couplings according to the present invention.
Fig. 2 shows the parts of Fig. 1 in assembled state.
Fig. 3 shows an exploded view of a second embodiment of a compression coupling according to the invention. Fig. 4 shows the coupling according to Fig. 3 in assembled state.
Fig. 5 shows an exploded view of a third embodiment of the parts forming the compression coupling.
Fig. 6 shows the compression coupling according to Fig. 5 in a preassembled state before tightening. Fig. 7 shows the compression coupling according to Fig. 6 after tightening. - 1-
DESCRIPTION OF EMBODIMENTS
In the drawings, the numeral 11 refers to a tube, 12 to a first fitting part, 13 to a compression sleeve, 14 to a supporting sleeve and 15 to a second fitting part. In the following, it will be descπbed a device for wall mounting of a mixing tap, where the first fitting part 12 is a mixing tap connector and the second fitting part 15 is a mixing tap, which two parts can be screwed into each other.
The supporting sleeve 14 is provided with helical-shaped grooves in the form of self- tapping threads 16, which crests 17 are suitably directed along the pull out direction of the supporting sleeve. The thread profile can also be trapezoid, round or square. To attain maximum sealing between the supporting sleeve and the tube, there may be one or several grooves 34 at the transition from the threads, in which groove or grooves a sealing πng can be mounted. A key gπp 18 is provided in one end of the supporting sleeve 14, which key gπp 18 can be formed either outside or inside the supporting sleeve 14 The key gπp 18 can be formed as a socket head cap gπp, screwdπver groove or the like, which does not need special tools. Alternatively, the gπp can be formed by the outside of the supporting sleeve. Further, the supporting sleeve 14 is designed with a peπpheral flange 19 with an internal conical contact surface 20 In addition, the flange 19 has an outer conical form 21 and on a portion of this outer conical form, a peπpheral groove 22 is provided for a sealing πng 23 Suitably, the compression sleeve 13 is made of a polymeπc mateπal having spπng back characteπstics and it is preferably made with a curved outside and a radial slit 24.
Duπng assembly (Fig. 2) of the different parts (Fig. 1), the mixing tap connector 12, followed by the compression sleeve 13, are thread on the tube. Thereafter, the supporting sleeve 14 is pushed or screwed into the tube 11 with help of the self-tapping threads 16, which may eventually cut into the tube mateπal duπng mounting. In a known way, the compression sleeve will be compressed when the fitting parts 12 and 15 are screwed towards each other, whereby the threads 16 will be entirely forced into the inside wall of the tube. Duπng dismounting, the threads that have been cut in the tube 11 will cooperate with the outer threads 16 in the supporting sleeve
When the mixing tap connector 12 is screwed onto the mixing tap 15, the first conical contact surface 25 of the compression sleeve 13 will cooperate with a conical surface 26 on the mixing tap connector 12. The internal, conical contact surface 20 of the supporting sleeve 14 cooperates with the second conical contact surface 27 of the compression sleeve at the same time as the outer conical form 21 of the supporting member 14 cooperates with a corresponding conical surface 28 on the mixing tap 15 to attain a tight coupling between the mixing tap 15 and the mixing tap connector 12
The embodiment in Fig 3 and 4 can be distinguished from the embodiment in Fig 1 and Fig. 2 in that the sealing nng 23 has been removed and replaced with a separate seal 29 which is freely mounted between the supporting sleeve 14 and the mixing tap 15. In addition, the supporting sleeve 14 and the compression sleeve 13 lack conical contact surfaces and the peπpheral flange 19 of the supporting sleeve lacks an internal conical contact surface, instead the flange is substantially smooth and perpendicular to the axial direction of the sleeve 14. The compression sleeve 13 is single-conical, which means that the contact between the supporting sleeve 14 and the compression sleeve 13 is made between the smooth, peπpheral flange surface 30 and the base surface 31 of the compression sleeve.
When dismounting the two embodiments according to the invention, the mixing tap 15 is first screwed off the mixing tap connector 12, and with help from the key gπp 18 m the supporting sleeve 14, the supporting sleeve can be screwed off the tube 11 , which entails the compression sleeve 13, as well as the mixing tap connector 12, to be removed from the tube 11.
In the embodiment according to Fig 5-7, the compression sleeve and the supporting sleeve 14 are connected to each other via a transitional portion 32 The supporting sleeve 14 has an internal, through hole 33, working as a passage for a medium, for instance water. A peripheral, conical surface 25 is provided on the outside of the transitional portion 32. Further, the outer surface of the supporting member 14 is provided with outer threads 16, and at least one outer, peripheral groove 34. An annular recess 35 is provided between the compression means 13 and the supporting sleeve 14, which terminates in an inner end surface 36, which is substantially parallel with the end surface of the supporting sleeve. The inner diameter of the tube 11 and the outer diameter of the supporting sleeve which is provided with threads are chosen so that the supporting sleeve is only insertable in the tube by using some violence. As the threads 16 are suitably self-tapping, the supporting sleeve can be threaded for instance manually. If the tube or the hose comprises a softer material it is also possible to drive the supporting sleeve by a number of hammer strokes.
The free, outer end of the compression means 13 is bevelled forming a conical contact surface 27, which is provided to cooperate with a corresponding internal conical surface 28 in the coupling nut 15. The bevelled end 27 of the compression means 13 extends to an area substantially right in front of the peripheral groove 24 of the supporting sleeve.
Except for threads on the supporting sleeve, the compression means can also be provided with helical-shaped threads 39, which threads can be provided on the inner surface of the compression means and are self-tapping, or as an alternative, arranged to produce corresponding helical-shaped threads in the tube when mounting the coupling. These threads 39, which are shown in Fig. 5, provide a further improved connection between the supporting sleeve and the tube and moreover, they provide a more reliably mounting as it is easier to hold the supporting sleeve in correct position in the coupling during tightening.
The first coupling part 12 is formed with an internal conical contact surface 26 with substantially the same conicity as the conical contact surface 25 at the transitional portion 32. Both the contact surfaces 26 and 25 are arranged to tightly cooperate with each other when the coupling parts 12 and 15 are screwed together via outer threads on the first coupling part 12 and internal threads on the coupling nut 15. During the assembly (Fig. 6) of the different parts (Fig. 5), the coupling nut 15 is first thread onto the tube 11. Thereafter, the supporting sleeve 14 is pressed into the tube 11 so far that the end 37 of the tube comes into contact with the inner end surface 36 of the compression means 13 and the compression means 13 over the end section of the tube 11, whereafter the coupling nut 15 can be screwed onto the first coupling part 12, as shown in Fig. 6.
During continued tightening of the coupling nut 15, the conical surface 28 is pressed towards the conical surfaces 27 of the compression means 13, whereby the free end of the compression means is pressed into the envelope surface 38 of the tube 11 and deforms the tube so much that tube material is pressed into the peripheral groove of the supporting sleeve 14. In this way, a reliable connection is provided between the tube 11 and the supporting sleeve 14, even to axial tensile forces, and a leak proof and reliable seal.
The invention is not limited to the embodiments shown, but several variations and combinations of the embodiments are possible within the scope of the attached claims.
• /-
LIST OF REFERENCE NUMERALS
11 Tube
12 Fitting part, e.g. mixing tap connector
13 Compression sleeve
14 Supporting sleeve
15 Fitting part, e.g. mixing tap
16 Helical-shaped threads
17 Crests of threads
18 Key grip
19 Peripheral flange
20 Internal, conical contact surface
21 Outer conical form
22 Peripheral groove
23 Sealing ring
24 Radial slit
25 Conical contact surface on compression sleeve 6 Conical contact surface on mixing valve holder 7 Conical contact surface on compression sleeve 8 Conical contact surface on mixing valve 9 Seal 0 Flange surface 1 Base surface 2 Transitional portion 3 Hole, passage 4 Groove 5 Annular recess 6 End surface 7 Tube end 8 Envelope surface 9 Helical-shaped threads

Claims

1. Device at compression couplings of the kind comprising a conical or double-conical compression means (13) which is threadable on an internally and outwardly smooth tube (11), hose or similar and a supporting sleeve (14) which is insertable in or on the tube (11), which compression means (13) cooperates with a conical or plane surface (26) on a fitting part (12) or the like, characterized in, that the outer surface of the supporting sleeve (14) is provided with helical-shaped threads (16), which are thread-cutting dunng rotational threading of the tube, alternatively provided to produce corresponding helical-shaped threads dunng pressing of the compression means (13) onto the tube (11).
2. Device according to claim 1, characterized in, that the supporting sleeve (14) is provided with a key grip (18) known per se or the like for screwing the supporting sleeve (14) into or out off the tube (11)
3. Device according to claim 1. characterized in, that the supporting sleeve (14) is provided with a peπpheial flange (19) with an internal, conical contact surface (20) provided for cooperation with a corresponding conical contact surface (27) on the compression means (13).
4. Device according to claim 3, characterized in, that the flange (19) is provided with an outer conical form (21) for cooperation with a second fitting part (15), for example a mixing tap, which is connectable to the fitting part (12) or the like
5. Device according to claim 4, characterized in, that the outer conical surface (21) of the flange (19) is provided with a peripheral groove (22) for a sealing ring (23).
6. Device according to claim 1, characterized in, that the crests (17) of the threads (16) are directed along the pull out direction of the supporting sleeve (14).
7. Device according to claim 1, characterized in, that the supporting sleeve (14) is provided with a peripheral flange (19), which is provided substantially perpendicular to the longitudinal axis of the supporting sleeve, and which flange (19) is provided with a support surface (30) provided to cooperate with a corresponding contact surface (31) on the compression means (13).
8. Device according to claim 1, characterized in, that the supporting sleeve (14) is provided with at least one peripheral groove (34), that the free, outer end of the compression means (13) extends to a region substantially right in front of the groove (34) of the supporting sleeve, and that the conical contact surfaces (27, 28) of the compression means (13) and said fitting part (15) are designed to force the free end of the compression means downward during a relative displacement towards each other and thereby deform the tube (11), hose or the like so that the tube or hose material is pressed into the groove of the supporting sleeve.
9. Device according to claim 8, characterized in, that the transitional portion between the compression means (13) and the supporting sleeve (14) is designed with a peripheral, conical surface (25) which is provided for cooperation with the conical form (26) of the fitting part (12).
10. Device according to claim 8, characterized in, that the compression means is provided with helical-shaped threads (39) on its inner surface.
PCT/SE2000/002507 1999-12-23 2000-12-13 Device at clamp couplings WO2001048414A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU24157/01A AU2415701A (en) 1999-12-23 2000-12-13 Device at clamp couplings
DK200200899A DK200200899A (en) 1999-12-23 2002-06-14 Clamping screw connection device
FI20021183A FI20021183A (en) 1999-12-23 2002-06-19 Device in connection with clamps
NO20023027A NO20023027D0 (en) 1999-12-23 2002-06-21 Device for clamping connections

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE9904758A SE515875C2 (en) 1999-12-23 1999-12-23 Device for use with compression couplings e.g. used for mounting mixing taps etc.. comprises conical or double-conical compression member which cooperates with conical or plane surface on fitting part
SE9904758-1 1999-12-23
SE0000736-9 2000-03-06
SE0000736A SE515889C2 (en) 1999-12-23 2000-03-06 clamping Coupling

Publications (1)

Publication Number Publication Date
WO2001048414A1 true WO2001048414A1 (en) 2001-07-05

Family

ID=26655009

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2000/002507 WO2001048414A1 (en) 1999-12-23 2000-12-13 Device at clamp couplings

Country Status (6)

Country Link
AU (1) AU2415701A (en)
DK (1) DK200200899A (en)
FI (1) FI20021183A (en)
NO (1) NO20023027D0 (en)
SE (1) SE515889C2 (en)
WO (1) WO2001048414A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1425533B1 (en) * 2001-08-21 2005-05-11 Raufoss Asa Support sleeve for use in a tube coupling and a coupling housing for use together with said sleeve
ES2369446A1 (en) * 2008-10-30 2011-12-01 José Manuel Ruibal Comesaña Accessory for the unión by embutition of pipes of plumbing and heating. (Machine-translation by Google Translate, not legally binding)
JP2013181574A (en) * 2012-02-29 2013-09-12 Kitz Corp Expansive/contractive and flexible joint, and snap tap with saddle using the same
US20220025996A1 (en) * 2018-12-19 2022-01-27 Nippon Pillar Packing Co., Ltd. Conversion adapter and fitting with the same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3025086A (en) * 1958-02-25 1962-03-13 Compression Joints Ltd Compression pipe fittings
DE1244500B (en) * 1962-04-19 1967-07-13 Umberto Querci Hose connection for hoses made of elastic material, especially plastic or rubber
US4192532A (en) * 1978-07-24 1980-03-11 Pacella Samuel S Flexible conduit connector
EP0168260A2 (en) * 1984-07-13 1986-01-15 Sekisui Kagaku Kogyo Kabushiki Kaisha Tube joint
EP0503737A1 (en) * 1991-03-13 1992-09-16 ROMANELLI, Antonio Improved nipple joint
EP0581678A1 (en) * 1992-07-29 1994-02-02 S.A. Gripp Radial clamping device for connecting a pipe to a pipe end
EP0811801A1 (en) * 1996-06-07 1997-12-10 MACRIFIN S.p.A. Pipe fitting

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3025086A (en) * 1958-02-25 1962-03-13 Compression Joints Ltd Compression pipe fittings
DE1244500B (en) * 1962-04-19 1967-07-13 Umberto Querci Hose connection for hoses made of elastic material, especially plastic or rubber
US4192532A (en) * 1978-07-24 1980-03-11 Pacella Samuel S Flexible conduit connector
EP0168260A2 (en) * 1984-07-13 1986-01-15 Sekisui Kagaku Kogyo Kabushiki Kaisha Tube joint
EP0503737A1 (en) * 1991-03-13 1992-09-16 ROMANELLI, Antonio Improved nipple joint
EP0581678A1 (en) * 1992-07-29 1994-02-02 S.A. Gripp Radial clamping device for connecting a pipe to a pipe end
EP0811801A1 (en) * 1996-06-07 1997-12-10 MACRIFIN S.p.A. Pipe fitting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1425533B1 (en) * 2001-08-21 2005-05-11 Raufoss Asa Support sleeve for use in a tube coupling and a coupling housing for use together with said sleeve
ES2369446A1 (en) * 2008-10-30 2011-12-01 José Manuel Ruibal Comesaña Accessory for the unión by embutition of pipes of plumbing and heating. (Machine-translation by Google Translate, not legally binding)
JP2013181574A (en) * 2012-02-29 2013-09-12 Kitz Corp Expansive/contractive and flexible joint, and snap tap with saddle using the same
US20220025996A1 (en) * 2018-12-19 2022-01-27 Nippon Pillar Packing Co., Ltd. Conversion adapter and fitting with the same

Also Published As

Publication number Publication date
SE0000736D0 (en) 2000-03-06
AU2415701A (en) 2001-07-09
SE515889C2 (en) 2001-10-22
DK200200899A (en) 2002-06-14
FI20021183A (en) 2002-06-19
SE0000736L (en) 2001-06-24
NO20023027L (en) 2002-06-21
NO20023027D0 (en) 2002-06-21

Similar Documents

Publication Publication Date Title
CA2126276C (en) Plumbing hookup kit
KR100934916B1 (en) Connector device for pipes
US6860523B2 (en) Tube coupling
JP3077817B2 (en) Joint for outer surface engagement of resin pipe
US6435568B1 (en) Tube joint having tightening member for accommodating tubes of varying wall thickness
US3591208A (en) Pressure fitting for plastic tubing
US3822074A (en) Releasable coupling for tubular members and method for assemblying said coupling
US20040169370A1 (en) Coupling device for polymeric pipes
US5681058A (en) Assembly for joining a pipe to a pipe fitting
JPH0633844B2 (en) Pipe fitting
JP3978133B2 (en) Pipe fittings with a tightening nut with two screws with different pitches to reduce the required tightening force
JP2023523511A (en) Strain Relief Couplings and Strain Relief Coupling Assemblies
JP3672657B2 (en) Plug-in fitting
EP1800047B1 (en) Pipe coupling
US5997050A (en) Double cone coupling nipple of a steel tubing and method of making same
WO2001048414A1 (en) Device at clamp couplings
JP4766707B2 (en) Pipe fittings for plastic resin pipes
US6860522B1 (en) Connector fitting for a high pressure hose
US20220373116A1 (en) Coupling part for a hose coupling
EP0220150B1 (en) Pipe joint
JP2738630B2 (en) Pipe fittings
EP0940617B1 (en) Quick-action coupling system
KR100751755B1 (en) Hose connecting structure
KR200319225Y1 (en) pipe fitting
CN216383008U (en) Stainless steel corrugated hose joint free of shock wave

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ CZ DE DE DK DK DM DZ EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 20021183

Country of ref document: FI

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP