WO2006004425A1 - Fixing sleeve for coupling pipes of first or second diameter - Google Patents

Fixing sleeve for coupling pipes of first or second diameter Download PDF

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Publication number
WO2006004425A1
WO2006004425A1 PCT/NO2005/000244 NO2005000244W WO2006004425A1 WO 2006004425 A1 WO2006004425 A1 WO 2006004425A1 NO 2005000244 W NO2005000244 W NO 2005000244W WO 2006004425 A1 WO2006004425 A1 WO 2006004425A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
sleeve
diameter
pipes
coupling
Prior art date
Application number
PCT/NO2005/000244
Other languages
French (fr)
Inventor
Beathe ROSSEBØ
Olav Ytreland
Original Assignee
Betek Norge 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 Betek Norge As filed Critical Betek Norge As
Publication of WO2006004425A1 publication Critical patent/WO2006004425A1/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
    • 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
    • F16L37/091—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 a ring provided with teeth or fingers
    • 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
    • F16L37/56—Couplings of the quick-acting type for double-walled or multi-channel pipes or pipe assemblies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
    • H02G3/0608—Joints for connecting non cylindrical conduits, e.g. channels

Definitions

  • Fixing sleeve for coupling pipes of first or second diameter Fixing sleeve for coupling pipes of first or second diameter .
  • the present invention relates to a coupling device, in particular, a fixing sleeve for coupling of pipes in a hidden electrical installation.
  • the electrical installation In constructing dwelling houses and industrial buildings, the electrical installation is normally installed so it is concealed.
  • a network of pipes is laid out from one or more centrals or fuse boxes so that it is connected in coupling boxes located on walls, on ceilings and on floors where switches, sockets, lamps and/or other equipment are to be fitted or between centrals or fuse boxes, before facing boards, panelling and floors, respectively, are fitted.
  • facing boards, panelling and floors and any other facing elements will be described as facing boards for simplicity.
  • the pipes can be of metal or plastic. Plastic pipes are available both as rigid and flexible pipes. The pipes are delivered in several standard diameters notably, 16, 20, 25, 32, 40 and 50 mm.
  • the pipes can be spliced with the help of splicing sleeves and fastened to coupling boxes, coupling cabinets, fuse boxes etc. with the help of cabinet sleeves.
  • the sleeves can be separate units that are arranged to be fastened to coupling boxes or holes in coupling cabinets, fuse boxes or the like, or can be integrated parts of the unit that the pipe is to be fastened to, as is often the case for coupling boxes.
  • the fixing sleeves are normally adapted to the outer diameter of the actual pipe dimension, so that the pipe can be pushed into the sleeve.
  • the pipes are prevented from being pushed too far in by a stopper that the pipe hits inside the pipe and is held back with the help of a retainer.
  • a much used retainer is a metal tongue which points into the fixing sleeve so that the pipe can easily be pushed into the sleeve, but which engages with any grooves in the pipe or sticks into the surface of the pipe and prevents it from being pulled out again.
  • a splicing sleeve normally comprises two sleeves that are fitted together so that they can be pushed into one pipe from either end.
  • Standard sizes have an outer diameter of 16, 20, 25, 32, 40 and 50 mm. This means that the producer of this type of equipment must have a wide product range. The craftsman who is doing the fitting must have available a large number of different products adapted to the different pipe diameters.
  • the aim of the present invention is to provide a solution that makes it possible to reduce the assortment of different diameters of splicing sleeves, cabinet sleeves and coupling boxes and the like with integrated sleeves. Furthermore, it is an aim to get a good grip between pipe and sleeve so that the pipe is prevented from being unintentionally pulled out of the sleeve.
  • a fixing sleeve for coupling of parts in a pipe system for assembly of a hidden electrical installation
  • the sleeve comprises a pipe-formed body which, in its one end, is adapted to receive pipes and in its other end is fastened to a second sleeve, to a coupling box or has arranged means for securing the sleeve to other units, and where a retainer is arranged in the sleeve to prevent pipes inserted in the sleeve being unintentionally pulled out of it
  • the pipe-formed body in a first zone has an inner diameter adapted to the outer diameter of a pipe with a first diameter
  • in a second zone has an inner diameter that is adapted to the outer diameter of a pipe with a second diameter which is smaller than the first diameter.
  • This sleeve makes possible a connection of pipes with two different diameters within the standard diameters for such pipes so that the number of different connecting pieces is much reduced. This will reduce both the costs of production and costs for the individual workman who can manage with a smaller number of different components.
  • the retainer has several tongues that are fastened at the free end of the pipe-formed body and stretch into the sleeve and in towards the longitudinal axis of the sleeve.
  • Figure 1 shows a module for a coupling box with two fixing sleeves seen in perspective
  • Figure 2 shows the same module as shown in figure 1 seen from the side;
  • Figure 3 shows the section A-A in figure 2
  • Figure 4 shows the section B-B in figure 2
  • Figure 5 shows the same section as shown in figure 3, but without inserted pipe
  • Figure 6 shows, seen in perspective, a retainer for use in the present fixing sleeve.
  • Figure 1 shows a module for a coupling box with two fixing sleeves 1, where two pipes 2 with different dimensions, for example 16 and 20 mm, are inserted in the two sleeves.
  • Figure 2 shows the same module seen from the side.
  • Figures 3 and 4 show sections through the sleeves with the thinnest and the thickest pipes, respectively, inserted, while figure 5 shows the same section without pipe.
  • the sleeves 1 comprise a pipe-formed body 3, which, at its one end, is fastened to a plate 4 and is open at its other free end.
  • a retainer 5 is fastened at the free end of the pipe- formed body. In the device shown, the retainer 5 is fastened with the help of a screw 6 that is open in the middle.
  • the retainer 5, which is shown in perspective in figure 6, comprises a ring 7 and a number, preferably in the main identical tongues 8 that extend from the plane of the ring, so that they together form a divided, truncated cone.
  • the retainer is shown fitted to a connecting piece in the figures 2, 3, 4 and 5 and is shown in perspective in figure 6.
  • the retainer is fitted in the fixing sleeve 1 in that the ring 7 lies against an edge 9 along the inner circumference of the sleeve and is fastened with a screw 6 so that the tongues point inwards from the free end of the sleeve.
  • the sleeve has a diameter nearest the free end which is larger than the diameter of the thickest pipe this sleeve is designed for, so that the tongues 8 shall have room between the outside of the pipe and the inside of the sleeve.
  • the diameter is adapted to the outer diameter of the thickest pipe which the device is intended for, while the inner diameter of the sleeve is adapted to the thinnest pipe.
  • a pipe 2 When a pipe 2 is inserted into the sleeve 1, it is put in through the opening at the free end and pressed in between the tongues 8 and forces these apart.
  • a thick pipe will go into the part of the sleeve that has a diameter adapted to the thick pipe, but stop where the diameter gets smaller.
  • a thin pipe will go further in to the innermost part of the sleeve and stop against a stopper (not shown) to prevent that the pipe is pushed too far into the sleeve.
  • the pipe is prevented from sliding back out of the sleeve by the tongues 8 either in that these engage with grooves in the surface of the pipe or that they cut into the surface of the pipe and in this way engage with the pipe.
  • the pipe is stabilised in that it is relatively closely adapted to the diameter of a part of the sleeve and also that it is supported by the tongues 8. A firm locking is ensured in that several tongues are arranged around the pipe circumference.
  • the shape of the retainer in that it encompasses several tongues that point inwards into the sleeve and in the longitudinal axis of the sleeve, makes it possible to insert and lock pipes of different diameters in a fixing sleeve of one size.
  • the same sleeve permits pipes with diameters within relatively wide margins so that each sleeve permits pipes with at least two of the diameters of such standard pipes.
  • sleeves can be supplied for coupling of, for example, 16 and 20 mm pipes, 25 and 32 mm pipes and for 40 and 50 mm pipes.
  • a splicing piece with similar sleeve on both sides can thus be used to connect two pipes of different diameters.
  • the retainer shown which is preferably of metal, is fastened in the sleeve with the help of a screw.
  • This solution is preferred at present, but the retainer can also be fastened in other ways, such as in that it is moulded in, glued in or the like.
  • the retainer can also be divided into several retainers that are distributed around the inner diameter of the sleeve. As can be seen in the figures, the tongues, at the free end, are bent in towards the longitudinal axis of the sleeve to get a better engagement with the outside of the pipe.

Abstract

It is described a device for coupling of parts in a pipe system for assembly of a hidden electrical installation, said device where the socket (1) comprises a pipe formed body which in one of the ends is fitted to receive pipes (2) and in the other end is fastened to another socket, a coupling box or arranged means for the fastening of the socket to other units, and in which socket there is arranged a retainer (5) to prevent that a pipe (2) which has been inserted in the socket unintentionally is pulled out, characterized by that the pipe formed body in a first zone has an inner diameter adapted to the outer diameter of a pipe with a first diameter and in a second zone has an inner diameter which is adapted to the outer diameter of a pipe with a second diameter which is smaller than the first diameter.

Description

Fixing sleeve for coupling pipes of first or second diameter .
Device for coupling of pipes
The present invention relates to a coupling device, in particular, a fixing sleeve for coupling of pipes in a hidden electrical installation.
In constructing dwelling houses and industrial buildings, the electrical installation is normally installed so it is concealed. To install the electrical installation so that it is concealed, a network of pipes is laid out from one or more centrals or fuse boxes so that it is connected in coupling boxes located on walls, on ceilings and on floors where switches, sockets, lamps and/or other equipment are to be fitted or between centrals or fuse boxes, before facing boards, panelling and floors, respectively, are fitted. In the following, facing boards, panelling and floors and any other facing elements will be described as facing boards for simplicity. After this network of pipes and coupling boxes is in place, the necessary wires are led through. This is normally after the facing boards, panels or floors have been put in place.
The pipes can be of metal or plastic. Plastic pipes are available both as rigid and flexible pipes. The pipes are delivered in several standard diameters notably, 16, 20, 25, 32, 40 and 50 mm.
The pipes can be spliced with the help of splicing sleeves and fastened to coupling boxes, coupling cabinets, fuse boxes etc. with the help of cabinet sleeves. The sleeves can be separate units that are arranged to be fastened to coupling boxes or holes in coupling cabinets, fuse boxes or the like, or can be integrated parts of the unit that the pipe is to be fastened to, as is often the case for coupling boxes.
The fixing sleeves are normally adapted to the outer diameter of the actual pipe dimension, so that the pipe can be pushed into the sleeve. The pipes are prevented from being pushed too far in by a stopper that the pipe hits inside the pipe and is held back with the help of a retainer. A much used retainer is a metal tongue which points into the fixing sleeve so that the pipe can easily be pushed into the sleeve, but which engages with any grooves in the pipe or sticks into the surface of the pipe and prevents it from being pulled out again. A splicing sleeve normally comprises two sleeves that are fitted together so that they can be pushed into one pipe from either end. Several pipe dimensions are used. Standard sizes have an outer diameter of 16, 20, 25, 32, 40 and 50 mm. This means that the producer of this type of equipment must have a wide product range. The craftsman who is doing the fitting must have available a large number of different products adapted to the different pipe diameters.
The aim of the present invention is to provide a solution that makes it possible to reduce the assortment of different diameters of splicing sleeves, cabinet sleeves and coupling boxes and the like with integrated sleeves. Furthermore, it is an aim to get a good grip between pipe and sleeve so that the pipe is prevented from being unintentionally pulled out of the sleeve.
Short description of the invention
This aim is reached with a fixing sleeve for coupling of parts in a pipe system for assembly of a hidden electrical installation, where the sleeve comprises a pipe-formed body which, in its one end, is adapted to receive pipes and in its other end is fastened to a second sleeve, to a coupling box or has arranged means for securing the sleeve to other units, and where a retainer is arranged in the sleeve to prevent pipes inserted in the sleeve being unintentionally pulled out of it, where the pipe-formed body in a first zone has an inner diameter adapted to the outer diameter of a pipe with a first diameter and in a second zone has an inner diameter that is adapted to the outer diameter of a pipe with a second diameter which is smaller than the first diameter.
This sleeve makes possible a connection of pipes with two different diameters within the standard diameters for such pipes so that the number of different connecting pieces is much reduced. This will reduce both the costs of production and costs for the individual workman who can manage with a smaller number of different components.
It is preferred that the retainer has several tongues that are fastened at the free end of the pipe-formed body and stretch into the sleeve and in towards the longitudinal axis of the sleeve.
This offers a good and safe retention in that the pipe is held fast in several places around its circumference. Short description of the figures
Figure 1 shows a module for a coupling box with two fixing sleeves seen in perspective;
Figure 2 shows the same module as shown in figure 1 seen from the side;
Figure 3 shows the section A-A in figure 2;
Figure 4 shows the section B-B in figure 2;
Figure 5 shows the same section as shown in figure 3, but without inserted pipe; and
Figure 6 shows, seen in perspective, a retainer for use in the present fixing sleeve.
Detailed description of the invention
Figure 1 shows a module for a coupling box with two fixing sleeves 1, where two pipes 2 with different dimensions, for example 16 and 20 mm, are inserted in the two sleeves. Figure 2 shows the same module seen from the side.
Figures 3 and 4 show sections through the sleeves with the thinnest and the thickest pipes, respectively, inserted, while figure 5 shows the same section without pipe. The sleeves 1 comprise a pipe-formed body 3, which, at its one end, is fastened to a plate 4 and is open at its other free end. A retainer 5 is fastened at the free end of the pipe- formed body. In the device shown, the retainer 5 is fastened with the help of a screw 6 that is open in the middle. The retainer 5, which is shown in perspective in figure 6, comprises a ring 7 and a number, preferably in the main identical tongues 8 that extend from the plane of the ring, so that they together form a divided, truncated cone.
The retainer is shown fitted to a connecting piece in the figures 2, 3, 4 and 5 and is shown in perspective in figure 6. In the embodiment shown, the retainer is fitted in the fixing sleeve 1 in that the ring 7 lies against an edge 9 along the inner circumference of the sleeve and is fastened with a screw 6 so that the tongues point inwards from the free end of the sleeve. The sleeve has a diameter nearest the free end which is larger than the diameter of the thickest pipe this sleeve is designed for, so that the tongues 8 shall have room between the outside of the pipe and the inside of the sleeve. In an intermediate part of the sleeve, the diameter is adapted to the outer diameter of the thickest pipe which the device is intended for, while the inner diameter of the sleeve is adapted to the thinnest pipe. When a pipe 2 is inserted into the sleeve 1, it is put in through the opening at the free end and pressed in between the tongues 8 and forces these apart. A thick pipe will go into the part of the sleeve that has a diameter adapted to the thick pipe, but stop where the diameter gets smaller. A thin pipe will go further in to the innermost part of the sleeve and stop against a stopper (not shown) to prevent that the pipe is pushed too far into the sleeve.
The pipe is prevented from sliding back out of the sleeve by the tongues 8 either in that these engage with grooves in the surface of the pipe or that they cut into the surface of the pipe and in this way engage with the pipe.
The pipe is stabilised in that it is relatively closely adapted to the diameter of a part of the sleeve and also that it is supported by the tongues 8. A firm locking is ensured in that several tongues are arranged around the pipe circumference.
The shape of the retainer, in that it encompasses several tongues that point inwards into the sleeve and in the longitudinal axis of the sleeve, makes it possible to insert and lock pipes of different diameters in a fixing sleeve of one size. Thus the same sleeve permits pipes with diameters within relatively wide margins so that each sleeve permits pipes with at least two of the diameters of such standard pipes. Thus, sleeves can be supplied for coupling of, for example, 16 and 20 mm pipes, 25 and 32 mm pipes and for 40 and 50 mm pipes. A splicing piece with similar sleeve on both sides can thus be used to connect two pipes of different diameters.
The retainer shown, which is preferably of metal, is fastened in the sleeve with the help of a screw. This solution is preferred at present, but the retainer can also be fastened in other ways, such as in that it is moulded in, glued in or the like. The retainer can also be divided into several retainers that are distributed around the inner diameter of the sleeve. As can be seen in the figures, the tongues, at the free end, are bent in towards the longitudinal axis of the sleeve to get a better engagement with the outside of the pipe.

Claims

P a t e n t k r a v 1.
Fixing sleeve (1) for coupling of parts in a pipe system for assembly of a concealed electrical installation, where the sleeve (1) comprises a pipe-formed body which, at its one end, is adapted to receive pipes (2) and, at its other end, is fastened to a second sleeve, to a coupling box or has arranged means for fastening of the sleeve to other units, and where a retainer (5) is arranged in the sleeve to prevent that a pipe (2), which is inserted into the sleeve, is unintentionally pulled out of it, characcterised in that the pipe formed body in a first zone has an inner diameter adapted to the outer diameter of a pipe with a first diameter, and at the second zone has an inner diameter which is adapted to the outer diameter of a pipe with a second diameter which is smaller than the first diameter.
2.
Fixing sleeve (1) according to claim 1, characterised in that the retainer (5) has a number of tongues (8) which are fastened at the free end of the pipe-formed body and stretch inward in the sleeve (1) and in towards the longitudinal axis of the sleeve.
PCT/NO2005/000244 2004-06-30 2005-06-30 Fixing sleeve for coupling pipes of first or second diameter WO2006004425A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20042766 2004-06-30
NO20042766A NO320899B1 (en) 2004-06-30 2004-06-30 Sleeve for connecting rudder

Publications (1)

Publication Number Publication Date
WO2006004425A1 true WO2006004425A1 (en) 2006-01-12

Family

ID=35005984

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2005/000244 WO2006004425A1 (en) 2004-06-30 2005-06-30 Fixing sleeve for coupling pipes of first or second diameter

Country Status (2)

Country Link
NO (1) NO320899B1 (en)
WO (1) WO2006004425A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1298011A (en) * 1960-07-07 1962-07-06 Singer Mfg Co Hose connector for vacuum cleaner
FR1437312A (en) * 1965-06-21 1966-04-29 Box for quick-fit electrical installations of pipes or sheaths of different diameters
US4712812A (en) * 1986-09-02 1987-12-15 Weir Iii Joseph W Universal fittings
JPH1019188A (en) * 1996-07-03 1998-01-23 Nkk Corp Insertion type pipe joint
JP2002228075A (en) * 2001-01-30 2002-08-14 Noboru Kikuchi Pipe joint
EP1322011A1 (en) * 2001-12-21 2003-06-25 JVK Plastics, naamloze vennootschap Flush-mounted box for electrical elements

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1298011A (en) * 1960-07-07 1962-07-06 Singer Mfg Co Hose connector for vacuum cleaner
FR1437312A (en) * 1965-06-21 1966-04-29 Box for quick-fit electrical installations of pipes or sheaths of different diameters
US4712812A (en) * 1986-09-02 1987-12-15 Weir Iii Joseph W Universal fittings
JPH1019188A (en) * 1996-07-03 1998-01-23 Nkk Corp Insertion type pipe joint
JP2002228075A (en) * 2001-01-30 2002-08-14 Noboru Kikuchi Pipe joint
EP1322011A1 (en) * 2001-12-21 2003-06-25 JVK Plastics, naamloze vennootschap Flush-mounted box for electrical elements

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 05 30 April 1998 (1998-04-30) *
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 12 12 December 2002 (2002-12-12) *

Also Published As

Publication number Publication date
NO20042766D0 (en) 2004-06-30
NO320899B1 (en) 2006-02-13

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