EP1474854A1 - Connecting part for a cable duct system - Google Patents

Connecting part for a cable duct system

Info

Publication number
EP1474854A1
EP1474854A1 EP03734915A EP03734915A EP1474854A1 EP 1474854 A1 EP1474854 A1 EP 1474854A1 EP 03734915 A EP03734915 A EP 03734915A EP 03734915 A EP03734915 A EP 03734915A EP 1474854 A1 EP1474854 A1 EP 1474854A1
Authority
EP
European Patent Office
Prior art keywords
connecting part
cable duct
profile
cable
duct system
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.)
Withdrawn
Application number
EP03734915A
Other languages
German (de)
French (fr)
Inventor
Dirk René BOER
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.)
Gouda Holland BV
Original Assignee
Gouda Holland BV
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 Gouda Holland BV filed Critical Gouda Holland BV
Publication of EP1474854A1 publication Critical patent/EP1474854A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0431—Wall trunking
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/4459—Ducts; Conduits; Hollow tubes for air blown fibres
    • 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

  • the invention relates to a connecting part for a cable duct system, comprising at least one engaging means which can engage on an element of a cable duct system.
  • the invention also relates to the use of a connecting element.
  • the invention also relates to the manufacture of a connecting part.
  • a connecting part of the present type is generally known. Such connecting parts can be used to connect two elongate cable duct parts . A problem with such connecting parts is that the connecting parts are not flexible in use. Known connecting parts have only one function.
  • the present invention has for its object to provide a connecting part wherein this drawback is alleviated.
  • This object is achieved with a connecting part which has a substantially pillow-shaped profile.
  • a connecting part is used as connector of two elements in a cable duct system, wherein the pillow profile also fulfils a guiding function for the cables which are received in the cable ducts.
  • the pillow profile which for instance has two arcuate profiles with a determined radius, provides guiding of the cables around the bend with this determined radius. Vulnerable cables can be damaged when the cables are pulled round too sharp an angle. The profile guides the cable round the bend.
  • the connecting part preferably comprises at least two engaging means, each for engaging close to an edge of a mouth of a cable duct.
  • the connecting part can hereby connect two elements in a cable duct system.
  • the connecting part preferably comprises clamping means.
  • the engaging of the cable ducts connected by the connecting part then takes place in clamping manner.
  • the clamping engagement has the particular advantage that no time-consuming connecting operations have to be carried out .
  • the connecting part preferably comprises a recess close to the sides of the pillow-shaped profile.
  • the recess is adapted such that it can receive an edge of a cable duct.
  • the connecting part can receive a cable duct in the recess and in particular can engage it clampingly. A further improved connection is hereby created.
  • the connecting part is preferably adapted to engage at least two edges of two cable ducts, wherein the edges of the cable ducts lie substantially perpendicularly of each other. It is hereby possible to form an angle between two cable ducts elements with the connecting part .
  • the arcuate profile of the pillow profile preferably has a radius of at least 50 mm. This enables the use of the connecting part as guide means for guiding vulnerable cables round a corner. Unprotected glass fibre cables can be guided without damage round bends with a radius greater than 50 mm.
  • the engaging means are mutually connected in electrically conductive manner.
  • a cable duct system is hereby assembled which conducts static electricity. This provides particular advantages when unprotected glass fibres are used in the cable duct system.
  • the connecting part preferably comprises aluminium.
  • the connecting part is hereby electrically conductive, the connecting part is light in weight, and the connecting part can be formed by extrusion.
  • the profile preferably has at least one threaded channel.
  • individual connecting parts can be manufactured by cutting through the extrusion profile.
  • the open side of the profile is preferably connected to a cap by means of screws which can engage in the threaded channel .
  • the profile has a longitudinal groove.
  • the longitudinal groove is arranged in the middle of the pillow profile.
  • the recess can receive a portion of a curved plate.
  • the connecting part can hereby be used as component of an elevating part of a branching, wherein a determined height must be bridged. Using the connecting part and a curved plate which engages in the recess in the connecting part, the height can be bridged in relatively simple manner.
  • the curved plate can also engage in the recess when the connecting part is used for the purpose of narrowing a cable duct .
  • the profile of the connecting part preferably comprises a small chamber which can receive a spring element, in particular a clamping spring.
  • the clamping spring is placed such that it clamps onto a cable duct which is received in the recess of the profile of the connecting part .
  • the invention also relates to a method for manufacturing the profile evidently intended as connecting part of a cable duct system.
  • connection part by injection moulding.
  • Use is made of a mould for injection moulding with a plastic or a synthetic material .
  • the use of such materials has a favourable effect on the guiding function of a connecting part, since such materials and the injection moulding can prevent sharp edges being present on the connecting part.
  • the connecting part is extruded. It is hereby possible to assemble an extruded profile which can be brought to a desired length. Use can be made of one profile which can be sawn to length, wherein the same profile can perform multiple functions.
  • the connecting parts are preferably used in a connecting element which comprises a base plate with holes . Through the holes can be arranged screws which subsequently engage on the threaded channel of the connecting part. In this manner the connecting part can be mounted on the base plate .
  • Fig. 1 shows a perspective view of a cable duct system embodied with connecting parts according to the invention.
  • Fig. 2 shows a view of a connecting part according to the invention used as a narrowing element between two cable ducts
  • Fig. 3 shows a perspective view of a branching provided with connecting elements according to the invention
  • Fig. 4 shows a perspective view of a descending part
  • Fig. 5 shows a perspective view of a connecting element with a connecting part according to another embodiment
  • Fig. 6 shows a connecting element with four connecting parts used as intersection of cable ducts.
  • Figure 1 shows a cable duct system 1. Shown is a first U-shaped, elongate cable duct 2 which is provided with a cover 3. The cover 3 can pivot about a hinge 4. Cable duct 2 is provided with four hinges 4. The hinge 4 is arranged on standing wall 5 of duct 2 and engages on cover 3. The cover moves as according to arrow 6.
  • Hinge 4 is assembled from a clamping part 7,8 and a shaft part 9,10.
  • the clamping part 7,8 is connected to cover 3 and shafts 9,10 are connected to standing wall 5,11.
  • Clamps 7,8 engage on shaft 9,10 such that the cover can perform a pivoting movement around this shaft.
  • the clamps 7,8 engage on shafts 9,10.
  • Cover 3 can pivot according to arrow 6 when hinge 4 forms the pivot axis, and cover 3 can pivot according to arrow 12 when shafts 9,10 form the pivot axis.
  • the U-shaped profile of cable duct 2 comprises two side walls 5,11 and a base 13.
  • the base serves as support for cables (not shown) which can be received in the cable duct. Cable duct 2 thus forms a holder.
  • Cable duct 2 has two outer ends, including the edge 14.
  • the edge 14 forms a mouth of cable duct 2.
  • a connecting element 15 can engage close to the mouth of the cable duct.
  • Connecting element 15 has substantially the same U-profile as cable duct 2, the connecting element 15 is of a slightly larger size.
  • Connecting element 15 is arranged substantially around cable duct 2.
  • Connecting element 15 is provided with clamping means 16 made up of a lip 16. The lip protrudes inward from the U-profile of connecting element 15. The lips are resilient. When cable duct 2 is arranged in connecting element 15, the lips 16 will move slightly inward in resilient manner and engage the edge 14 on the outside of cable duct 2 and herein exert a clamping force.
  • Cable duct 2 and connecting element 15 contain a conductive material, e.g. a metal.
  • the lips 16 are conductive.
  • the clamping force can be created by making use of the resilient properties of the metal.
  • the connection between the cable duct 2 and connecting element 15 is dependent on the clamping force exerted by lips 16 and the properties of the material, in particular the roughness or the friction which occurs when lips 16 are clamped on the outer surface of cable duct 2. By making use of metals the choice of clamping force can be so great that the friction is sufficient for secure construction of the connection to the cable duct .
  • the other end of cable duct 2 has an edge 17. Cable duct 2 is engaged at the outer ends of side walls 11,5 by connecting element 18, in the form of a narrowing element.
  • the narrowing element 18 is made up of two connecting parts 19, a cover 20, a base 21 and two hinges 22.
  • the narrowing element 18 forms the transition from the wide U-shaped cable duct 2 to the smaller U- shaped cable duct 23, see figure 2.
  • Figure 2 shows the top view of a narrowing element 18, without cover 20.
  • Connecting parts 19 are embodied with recesses 195 which are adapted to receive side wall 5,11,199 of a cable duct 2,23.
  • Connecting part 19 is formed by a pillow-shaped ⁇ profile comprising two threaded channels 191, two longitudinal grooves 192, two chambers 194 and two recesses 195. Chamber 194 can receive a clamping spring 193.
  • Protruding through base 21 are two screws (not shown) which engage in threaded channels 191.
  • Hinges 22 may also be connected to the connecting part with screws .
  • Cable duct 23 is connected to connecting element 24 embodied as T-connection part with three mouths, which are each connected to cable ducts 23, 25 and 26.
  • One mouth of connecting element 24 is closed with closing means 27.
  • the connecting parts 28 have the same pillow-shaped profile as connecting part 19, provided with a recess, in which the standing side wall of the U-shaped profile of cable duct 23, 25 and 26 can be received and can be engaged in clamping manner.
  • the recess is also suitable for receiving a closing means 27.
  • Closing means 27 can be removed, thus forming an open mouth of connecting element 24.
  • the standing recess of the connecting element 24 can first of all receive an edge, which runs parallel to the plane of the mouth of the connecting element 24, such as closing means 27, and in addition can receive an edge which runs perpendicularly of the plane of the mouth of the connecting element 24, for instance side walls of a cable duct. Both the cable duct and the closing means 27 are received in the recess and engaged clampingly by the lip of the clamping spring.
  • Cable duct 26 is provided with a cover device. Connected to the standing side walls of the U-shaped profile of cable duct 26 are four shaft parts 29. These can engage on clamps 31 connected to the edges of cover 30. Cover 30 can pivot in two ways. Two adjacent shaft parts, engaged clampingly by the respective clamping parts of the hinge, herein form the pivot axis of cover 30.
  • Cable duct 25 is connected to cable duct 32 by means of a connecting part 15.
  • Cable duct 32 is constructed with a branch to a smaller cable duct 33.
  • the cross-section of cable duct 33 is a quarter of the cable duct cross-section of cable duct 32.
  • an elevating part 34 is arranged in cable duct 32, see figure 3.
  • the elevating part 34 is made up of two curved plates 35,36, two connecting parts 37, 38 a bridge part 39, an auxiliary wall 40, two connecting element 41, 42 provided with cover parts 43, 44 each having a shaft 45,46.
  • a clamping part 451,461 engages on the shaft such that a hinge is defined.
  • the clamping part can be connected to a cover.
  • the cover can swing on two axes.
  • Connecting elements 41 and 42 connect the edges of side wall 47 of cable duct 32 to the edges 48, 49 of duct 33.
  • Cables which can be easily damaged by bending are guided by the curved plates 35,36 and two connecting parts 37,38.
  • a difference in height is bridged in smooth manner.
  • Cable duct 32 is for instance 100x100 mm, while duct 33 is 50x50 mm.
  • the difference in height which must be surmounted then amounts to 50 mm. Bridging of this difference in height is done with two curved plates 35, 36 which engage on a longitudinal groove 50, 51 of connecting parts 37, 38.
  • the curved plates 35,36 are arranged in the longitudinal groove by a movement as according to arrow 351, 361.
  • the connecting part 37,38 has a pillow-shaped profile, one side wall of which has an arc with a radius of 50 mm.
  • the curved plate likewise has substantially an arcuate form with a radius of 50 mm.
  • the bridge part 39 is situated at a height of 50 mm in cable duct 32.
  • Bridge part 39 is assembled from two substantially mutually perpendicular surfaces, see figure 3.
  • the first surface has four threaded holes 391. Screws can be placed through the holes such that bridge part 39 is connected to connecting parts 41,42.
  • the second surface has two threaded holes with two screws 392. These screws connect bridge part 39 to connecting part 37,38 by means of a screw connection to the respective threaded channel 381.
  • the bridge part also has a depressed part 394. This is situated close to the mouth of the branching.
  • the mouth of elevating part 34 is formed by recesses 421,431 of connecting parts 42,43 and depressed part 394. The mouth receives the edge of cable duct 33.
  • the recesses receive side walls 48,49, the depressed part 394 has a space for receiving edge 331 which forms the base of the U-shaped profile of cable duct 33.
  • the clamping means here also formed by clamping springs (not shown) , engage clampingly on the outside of cable ducts 32,33.
  • the connecting parts 41, 42 behave in similar manner to the above connecting parts 19.
  • the auxiliary wall 40 enables a separation of the cables necessary for the branching and the cables which are not being branched.
  • Screws 392 connect auxiliary wall 40 to the standing surface of bridge part 39. The cables which are not being branched do not run over the elevation.
  • Cable duct 33 is connected to a connecting element 52 which is formed by a base 53, connected to four connecting parts 54 provided with cover parts 55.
  • Connecting element 52 is embodied as T-junction. One of the mouths of the connecting element is closed with a closing means 56.
  • Connecting element 52 is connected to cable ducts 57, 58.
  • Connecting parts 54 engage clampingly on the side walls of cable ducts 57, 58 machined in non-metal removing manner.
  • the other end of cable duct 58 is engaged clampingly by connecting element 59 which corresponds to connecting element 15.
  • Connecting element 59 has lips 591 which engage on the standing side walls of cable duct 58 and descending part 60.
  • Connecting element 59 and lips 591 contain a metal providing a resilience and electrical conduction.
  • Descending part 60 enables a vertical cable duct.
  • the descending part 60 is assembled from a connecting part 63 and two corner pieces 61, 62, which have the same shape and are placed substantially vertically.
  • the corner piece 62 has a flange 64 with lip 641 which engages round the opposite corner piece 61.
  • Screws 65 protrude through holes 611 of corner piece 61 and engage in threaded channels 631 in the pillow-shaped profile of connecting part 63. Corner piece 62 is connected in the same manner to connecting part 63.
  • Corner pieces 61, 62 are provided with a cover 66, 67.
  • the covers are connected with two clamping parts 68 to two shaft parts 69.
  • Clamping part 68 and shaft part 69 form a hinge.
  • the covers can pivot around two axes. Access to the cable duct can be readily provided in this manner.
  • Shaft part 69 has a shaft 691, a flange 692, a stop 693 and two hooks 694.
  • the clamping mouth 681 of clamping part 68 engages on shaft 691.
  • Flange 692 lies over the standing side wall of corner piece 61.
  • Stop 693 defines an open position for cover 66,67. Hooks 694 protrude through portions punched out in the corner pieces 61,62 such that shaft parts 69 are connected non-movably to the corner pieces .
  • Connecting part 63 receives in its recesses 632 an edge of flange 64 of corner pieces 61,. 62 and engages these in clamping manner. Cables in the cable duct system are guided over one side of the pillow-shaped profile of connecting part 63 and herein form a bend with a radius of 50 mm.
  • the shown cable duct system 1 is easy to use and can be used for different purposes.
  • the cable duct system can be easily extended.
  • the cable duct system is particularly suitable for receiving vulnerable cables, in particular unprotected glass fibre cables .
  • Fig. 3 shows a connecting element 150.
  • Connecting element 150 can be used in cable duct systems to connect cable ducts.
  • One side-wall 151 is shown in the form of a connecting part according to the invention.
  • Connecting element 150 comprises a base plate 152 and a side wall 151.
  • Base plate 152 is provided with four stamped parts 153-156, at a position where cable ducts can be placed, i.e. where the mouth of the connecting element is situated.
  • the connecting element can connect a maximum of four cable ducts.
  • Base plate 152 is always provided with eight bores 157 through which screws 158 can be inserted such that they engage on the threaded channel 159 of a connecting part/side wall 151. The screws connect a connecting part to base plate 152.
  • Connecting part 151 has a pillow-shaped profile which is formed by extrusion and which has in cross- section two sides 160, 161 in the form of an arcuate profile.
  • Arcuate profile 161 can serve as guide means for a cable which is received in a cable duct system of which connecting element 150 forms part.
  • a cable can be pulled out of a cable duct, which engages close to stamped part 154, to a cable duct which engages close to stamped part 155.
  • the arcuate profile 161 serves as guide means having a determined minimum radius which is greater than the maximum bend that a fragile cable, such as an unprotected glass fibre cable, can make.
  • An unprotected glass fibre cable can make a bend with a radius of 50 mm without damage.
  • the arcuate profile 161 and arcuate profile 160 have a radius of a minimum of 50 mm.
  • Two recesses 162,163 are formed close to the ends of the profile of connecting part 151.
  • Recesses 162, 163 are suitable for receiving a standing side wall of a U- shaped cable duct and are also suitable for receiving an edge of a closing means.
  • the mouth of a U-shaped cable duct is received in recess 162, a corresponding parallel recess in a second connecting part and arranged in stamped part 154.
  • a clamping means 164 in the form of a clamping spring is arranged in the profile of connecting part 151.
  • the profile has a chamber 165.
  • the lip 166 of clamping spring 164 is suitable for clamping a standing side wall of a cable duct which is arranged close to stamped part 154.
  • the lip herein 'cuts' into the side wall of the cable duct.
  • Clamping spring 167 is placed in chamber 165 and recess 163 such that it can clampingly engage a closing means.
  • Lip 168 clamps on a closing means arranged along stamped part 155.
  • the closing means extends parallel along the stamped part .
  • Clamping spring 164 can be taken out of chamber 165 as according to arrow 169 and be re-placed so that a closing means placed parallel to stamped part 165 can also be clamped in recess 162.
  • the pillow-shaped profile 151 is covered on the top with a cap 170, which forms the shaft part of a hinge to which a cover for covering a connecting element 150 is fixed.
  • the cap 170 has for this purpose a shaft 171 and a stop 172.
  • the stop co-acts with the clamping part of the hinge (not shown) , which engages on shaft 171 such that an opened position for the cover is defined.
  • the cap 170 is connected to connecting part 151 with screws
  • Recess 162 is a longitudinal groove in which the standing edge of a U-shaped cable duct can be received and engaged by the lip 166 of clamping spring 164. Close to the upper end of the longitudinal groove a piece 174 of the pillow-shaped profile 151 has been removed.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Details Of Indoor Wiring (AREA)

Abstract

The invention relates to a connecting part for a cable duct system, comprising at least one engaging means which can engage on an element of a cable duct system, wherein the connecting part has substantially a pillow profile. With the connecting part can be assembled a connecting element which can connect cable ducts in a cable duct system. The connecting part is formed by extrusion.

Description

CONNECTING PART FOR A CABLE DUCT SYSTEM
The invention relates to a connecting part for a cable duct system, comprising at least one engaging means which can engage on an element of a cable duct system. The invention also relates to the use of a connecting element. The invention also relates to the manufacture of a connecting part.
A connecting part of the present type is generally known. Such connecting parts can be used to connect two elongate cable duct parts . A problem with such connecting parts is that the connecting parts are not flexible in use. Known connecting parts have only one function.
The present invention has for its object to provide a connecting part wherein this drawback is alleviated. This object is achieved with a connecting part which has a substantially pillow-shaped profile. Such a connecting part is used as connector of two elements in a cable duct system, wherein the pillow profile also fulfils a guiding function for the cables which are received in the cable ducts. When the connecting part is used as component for making an angle/bend between two cable ducts, the pillow profile, which for instance has two arcuate profiles with a determined radius, provides guiding of the cables around the bend with this determined radius. Vulnerable cables can be damaged when the cables are pulled round too sharp an angle. The profile guides the cable round the bend.
The connecting part preferably comprises at least two engaging means, each for engaging close to an edge of a mouth of a cable duct. The connecting part can hereby connect two elements in a cable duct system.
The connecting part preferably comprises clamping means. The engaging of the cable ducts connected by the connecting part then takes place in clamping manner. The clamping engagement has the particular advantage that no time-consuming connecting operations have to be carried out . The connecting part preferably comprises a recess close to the sides of the pillow-shaped profile. The recess is adapted such that it can receive an edge of a cable duct. The connecting part can receive a cable duct in the recess and in particular can engage it clampingly. A further improved connection is hereby created.
The connecting part is preferably adapted to engage at least two edges of two cable ducts, wherein the edges of the cable ducts lie substantially perpendicularly of each other. It is hereby possible to form an angle between two cable ducts elements with the connecting part .
The arcuate profile of the pillow profile preferably has a radius of at least 50 mm. This enables the use of the connecting part as guide means for guiding vulnerable cables round a corner. Unprotected glass fibre cables can be guided without damage round bends with a radius greater than 50 mm.
In the preferred embodiment the engaging means are mutually connected in electrically conductive manner. A cable duct system is hereby assembled which conducts static electricity. This provides particular advantages when unprotected glass fibres are used in the cable duct system. The connecting part preferably comprises aluminium.
The connecting part is hereby electrically conductive, the connecting part is light in weight, and the connecting part can be formed by extrusion.
The profile preferably has at least one threaded channel. When the connecting part is extruded, individual connecting parts can be manufactured by cutting through the extrusion profile. The open side of the profile is preferably connected to a cap by means of screws which can engage in the threaded channel . In the preferred embodiment the profile has a longitudinal groove. The longitudinal groove is arranged in the middle of the pillow profile. The recess can receive a portion of a curved plate. The connecting part can hereby be used as component of an elevating part of a branching, wherein a determined height must be bridged. Using the connecting part and a curved plate which engages in the recess in the connecting part, the height can be bridged in relatively simple manner. The curved plate can also engage in the recess when the connecting part is used for the purpose of narrowing a cable duct .
The profile of the connecting part preferably comprises a small chamber which can receive a spring element, in particular a clamping spring. The clamping spring is placed such that it clamps onto a cable duct which is received in the recess of the profile of the connecting part .
The invention also relates to a method for manufacturing the profile evidently intended as connecting part of a cable duct system.
It is possible to form the connecting part by injection moulding. Use is made of a mould for injection moulding with a plastic or a synthetic material . The use of such materials has a favourable effect on the guiding function of a connecting part, since such materials and the injection moulding can prevent sharp edges being present on the connecting part.
In the preferred embodiment the connecting part is extruded. It is hereby possible to assemble an extruded profile which can be brought to a desired length. Use can be made of one profile which can be sawn to length, wherein the same profile can perform multiple functions.
The connecting parts are preferably used in a connecting element which comprises a base plate with holes . Through the holes can be arranged screws which subsequently engage on the threaded channel of the connecting part. In this manner the connecting part can be mounted on the base plate .
The invention will be further described with reference to the annexed drawings, in which:
Fig. 1 shows a perspective view of a cable duct system embodied with connecting parts according to the invention.
Fig. 2 shows a view of a connecting part according to the invention used as a narrowing element between two cable ducts,
Fig. 3 shows a perspective view of a branching provided with connecting elements according to the invention, Fig. 4 shows a perspective view of a descending part,
Fig. 5 shows a perspective view of a connecting element with a connecting part according to another embodiment , Fig. 6 shows a connecting element with four connecting parts used as intersection of cable ducts.
Figure 1 shows a cable duct system 1. Shown is a first U-shaped, elongate cable duct 2 which is provided with a cover 3. The cover 3 can pivot about a hinge 4. Cable duct 2 is provided with four hinges 4. The hinge 4 is arranged on standing wall 5 of duct 2 and engages on cover 3. The cover moves as according to arrow 6.
Hinge 4 is assembled from a clamping part 7,8 and a shaft part 9,10. In this embodiment the clamping part 7,8 is connected to cover 3 and shafts 9,10 are connected to standing wall 5,11. Clamps 7,8 engage on shaft 9,10 such that the cover can perform a pivoting movement around this shaft. In the closed position of the cover the clamps 7,8 engage on shafts 9,10. Cover 3 can pivot according to arrow 6 when hinge 4 forms the pivot axis, and cover 3 can pivot according to arrow 12 when shafts 9,10 form the pivot axis.
The U-shaped profile of cable duct 2 comprises two side walls 5,11 and a base 13. The base serves as support for cables (not shown) which can be received in the cable duct. Cable duct 2 thus forms a holder.
Cable duct 2 has two outer ends, including the edge 14. The edge 14 forms a mouth of cable duct 2. A connecting element 15 can engage close to the mouth of the cable duct. Connecting element 15 has substantially the same U-profile as cable duct 2, the connecting element 15 is of a slightly larger size. Connecting element 15 is arranged substantially around cable duct 2. Connecting element 15 is provided with clamping means 16 made up of a lip 16. The lip protrudes inward from the U-profile of connecting element 15. The lips are resilient. When cable duct 2 is arranged in connecting element 15, the lips 16 will move slightly inward in resilient manner and engage the edge 14 on the outside of cable duct 2 and herein exert a clamping force. With this lip 16 it is easy to arrange and clampingly engage a cable duct, since the lip will readily move inward in resilient manner. It is however considerably more difficult to remove the cable duct again, since the edge of the lip engages on the cable duct, wherein considerable friction occurs.
Cable duct 2 and connecting element 15 contain a conductive material, e.g. a metal. The lips 16 are conductive. The clamping force can be created by making use of the resilient properties of the metal. The connection between the cable duct 2 and connecting element 15 is dependent on the clamping force exerted by lips 16 and the properties of the material, in particular the roughness or the friction which occurs when lips 16 are clamped on the outer surface of cable duct 2. By making use of metals the choice of clamping force can be so great that the friction is sufficient for secure construction of the connection to the cable duct . The other end of cable duct 2 has an edge 17. Cable duct 2 is engaged at the outer ends of side walls 11,5 by connecting element 18, in the form of a narrowing element. The narrowing element 18 is made up of two connecting parts 19, a cover 20, a base 21 and two hinges 22. The narrowing element 18 forms the transition from the wide U-shaped cable duct 2 to the smaller U- shaped cable duct 23, see figure 2. Figure 2 shows the top view of a narrowing element 18, without cover 20.
Connecting parts 19 are embodied with recesses 195 which are adapted to receive side wall 5,11,199 of a cable duct 2,23. When side wall 5,11,199 is inserted into the relevant recess in connecting part 19, the resilience of a lip 196 of a clamping spring 193 will have to be overcome. Clamping spring 193 clamps the side wall 5,11 in recess 195. Cable duct 2 is as it were extended with the narrowing element 18. Cable duct 23 is also connected to the narrowing element by means of clamping the side wall 199 in recess 195 of connecting part 19. Connecting part 19 is formed by a pillow-shapedι profile comprising two threaded channels 191, two longitudinal grooves 192, two chambers 194 and two recesses 195. Chamber 194 can receive a clamping spring 193. Protruding through base 21 are two screws (not shown) which engage in threaded channels 191. Hinges 22 may also be connected to the connecting part with screws .
Cable duct 23 is connected to connecting element 24 embodied as T-connection part with three mouths, which are each connected to cable ducts 23, 25 and 26. One mouth of connecting element 24 is closed with closing means 27.
The connecting parts 28 have the same pillow-shaped profile as connecting part 19, provided with a recess, in which the standing side wall of the U-shaped profile of cable duct 23, 25 and 26 can be received and can be engaged in clamping manner. The recess is also suitable for receiving a closing means 27. Closing means 27 can be removed, thus forming an open mouth of connecting element 24. The standing recess of the connecting element 24 can first of all receive an edge, which runs parallel to the plane of the mouth of the connecting element 24, such as closing means 27, and in addition can receive an edge which runs perpendicularly of the plane of the mouth of the connecting element 24, for instance side walls of a cable duct. Both the cable duct and the closing means 27 are received in the recess and engaged clampingly by the lip of the clamping spring.
Removal of closing means 27 and the arranging of a new cable duct element in this mouth demonstrates that the cable duct system according to the invention can be readily extended with additional cable ducts after assembly of the cable duct system for its first purpose. The cable duct system is thus very suitable for complicated cable duct systems such as those which can be used in the telecommunications industry, and can be extended in simple manner.
Cable duct 26 is provided with a cover device. Connected to the standing side walls of the U-shaped profile of cable duct 26 are four shaft parts 29. These can engage on clamps 31 connected to the edges of cover 30. Cover 30 can pivot in two ways. Two adjacent shaft parts, engaged clampingly by the respective clamping parts of the hinge, herein form the pivot axis of cover 30.
Cable duct 25 is connected to cable duct 32 by means of a connecting part 15. Cable duct 32 is constructed with a branch to a smaller cable duct 33. The cross-section of cable duct 33 is a quarter of the cable duct cross-section of cable duct 32.
In order to make a branch, an elevating part 34 is arranged in cable duct 32, see figure 3. The elevating part 34 is made up of two curved plates 35,36, two connecting parts 37, 38 a bridge part 39, an auxiliary wall 40, two connecting element 41, 42 provided with cover parts 43, 44 each having a shaft 45,46. A clamping part 451,461 engages on the shaft such that a hinge is defined. The clamping part can be connected to a cover. The cover can swing on two axes. Connecting elements 41 and 42 connect the edges of side wall 47 of cable duct 32 to the edges 48, 49 of duct 33.
Cables which can be easily damaged by bending are guided by the curved plates 35,36 and two connecting parts 37,38. A difference in height is bridged in smooth manner. Cable duct 32 is for instance 100x100 mm, while duct 33 is 50x50 mm. The difference in height which must be surmounted then amounts to 50 mm. Bridging of this difference in height is done with two curved plates 35, 36 which engage on a longitudinal groove 50, 51 of connecting parts 37, 38. The curved plates 35,36 are arranged in the longitudinal groove by a movement as according to arrow 351, 361.
The connecting part 37,38 has a pillow-shaped profile, one side wall of which has an arc with a radius of 50 mm. The curved plate likewise has substantially an arcuate form with a radius of 50 mm. The bridge part 39 is situated at a height of 50 mm in cable duct 32.
Bridge part 39 is assembled from two substantially mutually perpendicular surfaces, see figure 3. The first surface has four threaded holes 391. Screws can be placed through the holes such that bridge part 39 is connected to connecting parts 41,42. The second surface has two threaded holes with two screws 392. These screws connect bridge part 39 to connecting part 37,38 by means of a screw connection to the respective threaded channel 381. The bridge part also has a depressed part 394. This is situated close to the mouth of the branching. The mouth of elevating part 34 is formed by recesses 421,431 of connecting parts 42,43 and depressed part 394. The mouth receives the edge of cable duct 33. The recesses receive side walls 48,49, the depressed part 394 has a space for receiving edge 331 which forms the base of the U-shaped profile of cable duct 33. The clamping means, here also formed by clamping springs (not shown) , engage clampingly on the outside of cable ducts 32,33.
The connecting parts 41, 42 behave in similar manner to the above connecting parts 19. The auxiliary wall 40 enables a separation of the cables necessary for the branching and the cables which are not being branched. Screws 392 connect auxiliary wall 40 to the standing surface of bridge part 39. The cables which are not being branched do not run over the elevation.
Cable duct 33 is connected to a connecting element 52 which is formed by a base 53, connected to four connecting parts 54 provided with cover parts 55.
Connecting element 52 is embodied as T-junction. One of the mouths of the connecting element is closed with a closing means 56.
Connecting element 52 is connected to cable ducts 57, 58. Connecting parts 54 engage clampingly on the side walls of cable ducts 57, 58 machined in non-metal removing manner. The other end of cable duct 58 is engaged clampingly by connecting element 59 which corresponds to connecting element 15. Connecting element 59 has lips 591 which engage on the standing side walls of cable duct 58 and descending part 60. Connecting element 59 and lips 591 contain a metal providing a resilience and electrical conduction.
Descending part 60 enables a vertical cable duct. To this end the descending part 60 is assembled from a connecting part 63 and two corner pieces 61, 62, which have the same shape and are placed substantially vertically. The corner piece 62 has a flange 64 with lip 641 which engages round the opposite corner piece 61. Screws 65 protrude through holes 611 of corner piece 61 and engage in threaded channels 631 in the pillow-shaped profile of connecting part 63. Corner piece 62 is connected in the same manner to connecting part 63.
Corner pieces 61, 62 are provided with a cover 66, 67. In the closed situation the covers are connected with two clamping parts 68 to two shaft parts 69. Clamping part 68 and shaft part 69 form a hinge. The covers can pivot around two axes. Access to the cable duct can be readily provided in this manner. Shaft part 69 has a shaft 691, a flange 692, a stop 693 and two hooks 694. The clamping mouth 681 of clamping part 68 engages on shaft 691. Flange 692 lies over the standing side wall of corner piece 61. Stop 693 defines an open position for cover 66,67. Hooks 694 protrude through portions punched out in the corner pieces 61,62 such that shaft parts 69 are connected non-movably to the corner pieces .
Connecting part 63 receives in its recesses 632 an edge of flange 64 of corner pieces 61,. 62 and engages these in clamping manner. Cables in the cable duct system are guided over one side of the pillow-shaped profile of connecting part 63 and herein form a bend with a radius of 50 mm.
The shown cable duct system 1 is easy to use and can be used for different purposes. The cable duct system can be easily extended. The cable duct system is particularly suitable for receiving vulnerable cables, in particular unprotected glass fibre cables .
Fig. 3 shows a connecting element 150. Connecting element 150 can be used in cable duct systems to connect cable ducts. One side-wall 151 is shown in the form of a connecting part according to the invention. Connecting element 150 comprises a base plate 152 and a side wall 151. Base plate 152 is provided with four stamped parts 153-156, at a position where cable ducts can be placed, i.e. where the mouth of the connecting element is situated. The connecting element can connect a maximum of four cable ducts.
Base plate 152 is always provided with eight bores 157 through which screws 158 can be inserted such that they engage on the threaded channel 159 of a connecting part/side wall 151. The screws connect a connecting part to base plate 152.
Connecting part 151 has a pillow-shaped profile which is formed by extrusion and which has in cross- section two sides 160, 161 in the form of an arcuate profile. Arcuate profile 161 can serve as guide means for a cable which is received in a cable duct system of which connecting element 150 forms part. A cable can be pulled out of a cable duct, which engages close to stamped part 154, to a cable duct which engages close to stamped part 155. The arcuate profile 161 serves as guide means having a determined minimum radius which is greater than the maximum bend that a fragile cable, such as an unprotected glass fibre cable, can make. An unprotected glass fibre cable can make a bend with a radius of 50 mm without damage. The arcuate profile 161 and arcuate profile 160 have a radius of a minimum of 50 mm. Two recesses 162,163 are formed close to the ends of the profile of connecting part 151. Recesses 162, 163 are suitable for receiving a standing side wall of a U- shaped cable duct and are also suitable for receiving an edge of a closing means. The mouth of a U-shaped cable duct is received in recess 162, a corresponding parallel recess in a second connecting part and arranged in stamped part 154.
A clamping means 164 in the form of a clamping spring is arranged in the profile of connecting part 151. The profile has a chamber 165. The lip 166 of clamping spring 164 is suitable for clamping a standing side wall of a cable duct which is arranged close to stamped part 154. The lip herein 'cuts' into the side wall of the cable duct. Clamping spring 167 is placed in chamber 165 and recess 163 such that it can clampingly engage a closing means. Lip 168 clamps on a closing means arranged along stamped part 155. The closing means extends parallel along the stamped part . Clamping spring 164 can be taken out of chamber 165 as according to arrow 169 and be re-placed so that a closing means placed parallel to stamped part 165 can also be clamped in recess 162.
The pillow-shaped profile 151 is covered on the top with a cap 170, which forms the shaft part of a hinge to which a cover for covering a connecting element 150 is fixed. The cap 170 has for this purpose a shaft 171 and a stop 172. The stop co-acts with the clamping part of the hinge (not shown) , which engages on shaft 171 such that an opened position for the cover is defined. The cap 170 is connected to connecting part 151 with screws
173 which engage in threaded channels 159. The cover pivots for instance around a shaft 171, but also around another shaft which is arranged on a connecting part arranged on the opposite side of the connecting part. Recess 162 is a longitudinal groove in which the standing edge of a U-shaped cable duct can be received and engaged by the lip 166 of clamping spring 164. Close to the upper end of the longitudinal groove a piece 174 of the pillow-shaped profile 151 has been removed. Piece
174 forms part of inner wall 161. On the upper side of the standing wall of a cable duct for engaging a protective edge can hereby be arranged on the cable duct, which edge protrudes inward.

Claims

1. Connecting part for a cable duct system, comprising at least one engaging means which can engage on an element of a cable duct system, characterized in that the connecting part has substantially a pillow profile.
2. Connecting part as claimed in claim 1, characterized in that the connecting part comprises at least two engaging means, wherein each engaging means is adapted to engage close to an edge of a mouth of a cable duct.
3. Connecting part as claimed in claim 1 or 2, characterized in that the connecting part comprises clamping means for clampingly engaging an element of a cable duct system.
4. Connecting part as claimed in any of the foregoing claims, characterized in that the connecting part has at least one recess adapted to receive an edge of an element of a cable duct system.
5. Connecting part as claimed in any of the foregoing claims, characterized in that the connecting part is adapted to engage at least two edges of two cable ducts, wherein the edges of the cable ducts lie substantially perpendicularly of each other.
6. Connecting part as claimed in any of the foregoing claims, characterized in that one side of the pillow profile has an arcuate profile with a radius of at least 50 mm.
7. Connecting part as claimed in any of the claims 2-6, characterized in that at least two engaging means form a connection which contains electrically conductive material .
8. Connecting part as claimed in any of the foregoing claims, characterized in that the connecting part contains aluminium.
9. Connecting part as claimed in any of the foregoing claims, characterized in that the profile has at least one threaded channel.
10. Connecting part as claimed in any of the foregoing claims, characterized in that the profile has a recess and can receive at least a portion of a curved plate.
11. Connecting part as claimed in any of the foregoing claims, characterized in that the profile has a chamber, wherein the chamber can receive a spring element .
12. Method for manufacturing a profile apparently intended as connecting part for a cable duct system as characterized in the foregoing claims.
13. Method as claimed in claim 12, characterized by injection moulding of the connecting part. •
14. Method as claimed in claim 12, characterized by- extruding of the connecting part .
15. Use of at least one connecting part as claimed in any of the claims 1-11 in a narrowing element.
16. Use of at least one connecting part as claimed in any of the claims 1-11 to form a branching in a cable duct system.
17." Connecting element comprising a base plate, and at least one connecting part as claimed in any of the claims 1-11.
EP03734915A 2002-01-30 2003-01-17 Connecting part for a cable duct system Withdrawn EP1474854A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1019865 2002-01-30
NL1019865A NL1019865C2 (en) 2002-01-30 2002-01-30 Connection part for a cable duct system.
PCT/NL2003/000033 WO2003065531A1 (en) 2002-01-30 2003-01-17 Connecting part for a cable duct system

Publications (1)

Publication Number Publication Date
EP1474854A1 true EP1474854A1 (en) 2004-11-10

Family

ID=27656505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03734915A Withdrawn EP1474854A1 (en) 2002-01-30 2003-01-17 Connecting part for a cable duct system

Country Status (3)

Country Link
EP (1) EP1474854A1 (en)
NL (1) NL1019865C2 (en)
WO (1) WO2003065531A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752781A (en) * 1997-03-14 1998-05-19 Adc Telecommunications, Inc. Fiber trough coupling
US5929380A (en) * 1997-04-14 1999-07-27 The Siemon Company Outside corner fitting for use in a duct system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03065531A1 *

Also Published As

Publication number Publication date
NL1019865C2 (en) 2003-07-31
WO2003065531A1 (en) 2003-08-07

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