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WO1987000358A1 - Procede et moyens pour raccorder et proteger des fourreaux de cables de telecommunications - Google Patents

Procede et moyens pour raccorder et proteger des fourreaux de cables de telecommunications Download PDF

Info

Publication number
WO1987000358A1
WO1987000358A1 PCT/SE1986/000320 SE8600320W WO8700358A1 WO 1987000358 A1 WO1987000358 A1 WO 1987000358A1 SE 8600320 W SE8600320 W SE 8600320W WO 8700358 A1 WO8700358 A1 WO 8700358A1
Authority
WO
WIPO (PCT)
Prior art keywords
duct
duct sections
sections
shielding
joint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE1986/000320
Other languages
English (en)
Inventor
Stig Arne LÖFVING
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.)
Thorsman and Co AB
Original Assignee
Thorsman and Co 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
Application filed by Thorsman and Co AB filed Critical Thorsman and Co AB
Publication of WO1987000358A1 publication Critical patent/WO1987000358A1/fr
Priority to FI870797A priority Critical patent/FI82789C/sv
Anticipated expiration legal-status Critical
Ceased 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
    • H02G3/06—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 present invention relates to a method and an arrange- ment for effecting electrical connections in and for shielding the joints between the duct sections of elec ⁇ tric cable ducts or trunking systems intended for accommodating different kinds of telecommunication cables, said duct sections having the form of metal profiles, or profiles made of an electrically non-con ⁇ ductive material and provided with an outer metallic surface coating or with metallic inlays.
  • the ducts, or trunking systems comprise duct sections in which joints between, for instance, bottom trough-like members and associated cover members incorporate conventional shielding gaskets, for example gaskets of the- kind that comprise a resilient sealing strip wound with metal wire or filament.
  • Ducts, or trunking systems for accommodating electric cables, e.g. telecommunication cables, are known to the art. It is also known to shield or screen such ducts against the influence of radio frequency energy and electromagnetic pulses.
  • One drawback with present day duct shielding devices is that they are relatively complicated to use. Furthermore, the task of installing the shields is highly time consuming. It is also im ⁇ portant that the cover members of respective duct sections can be readily removed and re-fitted securely, particularly when dismantling and re-assembling existing duct systems. Disclosure of the Invention.
  • the object of the present invention is to provide, for the purpose of joining together duct sections that are intended to house telecommunication cables of various kinds, and for the purpose of shielding said sections against the influence of external magnetic fields, e.g. radio frequency energy and electromagnetic pulses, a novel method and novel means with which the drawbacks associated with the known methods and means are elimi- nated.
  • This object is achieved by means of the method and the means according to the invention, which relates to the jointing of duct sections, and preferably of duct sections which have the form of metal profiles of substantially rectangular cross-section.
  • the charac- terizing features of the method and the means according to the invention are set forth in the following Claims.
  • a duct system, or trunking system comprises a plural ⁇ ity of interconnected straight duct sections, which may be joined together by means of T-sections, X-sections or connecting sections.
  • the T-sections and X-sections are used to connect together branches in the duct system, whereas the connecting sections are used, for instance, to connect a duct system to apparatus cabi ⁇ nets.
  • All the duct sections comprise a base member, or base channel, and a cover member.
  • a shielding seal, or gasket is arranged in -each of the joints located in the various sections of the duct system, i.e. between the base channel and the cover member of -repective straight duct section and between the base member and the cover member of the T-section, the X-section, or the connect ⁇ ing sections.
  • the shielding gasket incorporated in each of said joints consists of a known sealing strip, and preferably a sealing strip that consists of a resilient plastic core wound with metal wire or filament.
  • the shielding gasket may have a circular or rectangular cross-section- al shape, and may also be provided with outwardly pro ⁇ jecting tags to facilitate fitting of the gasket.
  • a gap which is shielded with the aid of a bellows-like shield, in the form of a metal-wire net that hangs from the underside of the cabinet and sur ⁇ rounds a cable port in the cover member of the connect ⁇ ing section.
  • the lower end of this shield is preferably connected to a metal frame, the surface of which that lies in abutment with the cover member of the connecting section being fitted with a shielding gasket in accor ⁇ dance with the above.
  • Two mutually adjacent duct sections are preferably joined together by means of at least one joint fitting which extends along both sides of the joint between said sec- tions. Furthermore, preferably at least one electrical contact is arranged between respective duct...section..and the joint fitting on each side of the joint between the duct sections.
  • the electrical contact preferably has the form of a metal tongue or the like provided with a sprung or resilient element which projects from the plane of the tongue, and ensures that electrical contact is established between a joint fitting and the duct sections adjacent thereto.
  • Figure 1 is a schematic, exploded view of the component parts of a duct system connected to an apparatus cabi ⁇ net, shown in chain lines.
  • Figure 2 is a view taken on the line A-A in Figure 1 , 5 and shows a leg arrangement of the cabinet indicated in Figure 1.
  • Figure 3 is a more detailed, cross-sectional view of the duct, taken on the line B-B in Figure 1.
  • Figure 4 is a cross-sectional view taken on the line o C-C in Figure 3.
  • Figure 5 is an enlarged view of a detail indicated by the arrow D in Figure 3.
  • Figures 6 and 7 are respective enlarged views of a con ⁇ tact plate according to Figures 3 and 5.
  • FIG. 1 In the illustration of Figure 1 there is shown two straight duct sections 1 of a duct system, each of which comprises a base channel 2 and a cover member 3, of which one is joined to a T-section 4 and the other 0 is arranged for detachable connection to said T-section 4.
  • the T-section 4 comprises a base member 5 and a cover member 6, which is shown lifted from the base member 5.
  • the T-section 4 is joined to a connecting section 7, which comprises a base member 8 and a cover 5 member 9.
  • the cover member 9 of the connection section 7 has provided therein ..a .port.. 10 through which cables can be passed to an apparatus cabinet 11 illus ⁇ trated in chain lines in Figure 1.
  • the two straight duct sections 1 , the T-section 4 and the connecting section 7 are each joined to a respective adjacent duct section through the intermediary of joint fittings 12.
  • a shielding seal, or gasket, 26 is arranged in each joint located in the various duct sections of the duct system, i.e. between the base channel 2 and the cover member 3 of respective straight duct sections, between the base members and the cover member 6 of the T-sec ⁇ tion 4, and between the base section 8 and the cover member 9 of the connecting section 7.
  • Each joint between two mutually adjacent duct sections is shielded against the influence of external magnetic fields through the intermediary of a clamping device, which can be opened to facilitate fitting of the clamp, and which in the illustrated embodiment com ⁇ prises two jointing stirrups, which stirrups can be coupled one to the other and each of which is provided with a gasket or like seal.
  • two shielding gas ⁇ kets 26 are arranged in a lower joint stirrup 14, which covers the joint at the bottom of the duct, and in an upper joint stirrup 15 which is joined to the lower stirrup 14 and covers the joint at the top of the duct.
  • the two gaskets 26 extend in mutual paral ⁇ lel relationship around the joint, on all sides there- of.
  • the shielding gaskets 13, 26 provided in the duct sections, and the jointing stirrups suitably comprise a sealing strip of known kind, for example of the kind that comprises a resilient plastic core covered with metal wire or filament, for example a Monelmetal, aluminium or stainless steel wire.
  • the gaskets 13, 26 of the illustrated embodiment have a circular cross- sectional shape.
  • the connecting section 7 of the illustrated duct system is connected to the cabinet 11 through the intermediary of a bellows-like screen 16, as shown in Figure 2.
  • the screen 16 has the form of a metal-wire net which hangs down from the undersurface of the cabinet 11 and covers the cable port 10 located in the cover member 9 of the connecting section 7.
  • the bottom edge of the screen 16 is connected to a metal frame 17, the surface of which lying in abutment with the cover member 9 of the con ⁇ necting section 7 is provided with a shielding gasket or like seal.
  • Figure 3 is a cross-sectional view of a straight duct section taken on the line B-B in Figure 1 , and illust- rates in greater detail the base channel 2, the cover member 3 and the jointing components employed to join said parts together.
  • the joints are suitably effected with the aid of two fittings 12, of which only one is shown.
  • the fittings12 are mounted in T-shaped grooves 18 which lie opposite one another in the vertical walls of respective duct sections.
  • the positioning of the fittings 12 is also illustrated schematically in Figure 1.
  • the fittings 12 are securely held in respec ⁇ tive mutually opposing T-grooves 18 with the aid of screws which extend through threaded holes in respec ⁇ tive fittings 12, so as to press the fitting firmly in its associated T-groove 18.
  • a contact plate 19 is placed in a channel-like recess provided in each fit ⁇ ting 12, so that a plate 19 is located between each fitting 12 and the opposing wall of a respective duct section, on both sides of the joint.
  • the contact plate 19 is shown in an enlarged view in Figures 6 and 7, and comprises a thin bronze plate having punched therein resilient contact elements 20, which are twist ⁇ ed out of the plane of the plate 19 so as to form an angle therewith.
  • the construction of the plate 19 and its orientation in the joint are such as to take up eventual dimensional changes caused by heat generated when electric currents flow through the contact points or connections, through torsional resilience in the contact plate, and the otherwise commonly occuring deformation and oxidation in the contact points has been eliminated.
  • FIG. 4 A cross-sectional view of the bottom jointing stirrup 14 is illustrated in Figure 4. It will also be seen from this Figure that shielding gaskets 26 are located on both sides of the joints between respective duct sections. As illustrated in the Figure, the bottom jointing stirrup 14 presents a U-shaped ridge 24 which protects in between the duct sections therewith to pre ⁇ vent movement of the mutually connected stirrups 14,

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Patch Boards (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

Procédé et agencement permettant d'effectuer des connexions électriques et protéger les jonctions entre des tronçons de fourreaux reliés l'un à l'autre d'un système de fourreaux pour câbles électriques destinés à recevoir différents types de câbles de télécommunication, les tronçons de fourreaux ayant de préférence la forme de profilés métalliques de section rectangulaire de préférence. Les tronçons de fourreaux (1, 4, 7) sont raccordés les uns aux autres à l'aide d'un élément de raccordement (12) qui s'étend sur les deux côtés de l'emplacement de la jonction et qui est vissé sur les tronçons de fourreau (1, 4, 7) ou appuyé d'une autre manière contre ceux-ci, des organes de contact (19) étant placés dans un espace défini entre les tronçons de fourreaux (1, 4, 7) respectifs et l'élément de raccordement (12). En outre, l'emplacement de la jonction est entouré par un dispositif de protection ou de blindage comprenant un organe de serrage (14, 15) qui s'ouvre pour faciliter sa mise en place et qui, lorsqu'il est monté, comporte au moins un joint de blindage (26) qui s'étend circonférentiellement autour du fourreau.
PCT/SE1986/000320 1985-07-04 1986-07-01 Procede et moyens pour raccorder et proteger des fourreaux de cables de telecommunications Ceased WO1987000358A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI870797A FI82789C (sv) 1985-07-04 1987-02-24 Förfarande och anordning för sammanfogning och avskärmning av telekana ler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8503320A SE448588B (sv) 1985-07-04 1985-07-04 Forfarande och anordning vid sammanfogning av kanalstycken
SE8503320-7 1985-07-04

Publications (1)

Publication Number Publication Date
WO1987000358A1 true WO1987000358A1 (fr) 1987-01-15

Family

ID=20360806

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1986/000320 Ceased WO1987000358A1 (fr) 1985-07-04 1986-07-01 Procede et moyens pour raccorder et proteger des fourreaux de cables de telecommunications

Country Status (4)

Country Link
EP (1) EP0229819A1 (fr)
FI (1) FI82789C (fr)
SE (1) SE448588B (fr)
WO (1) WO1987000358A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647525A1 (fr) * 1989-05-24 1990-11-30 Bticino Srl Garniture d'etancheite entre joints d'elements a assembler pour la pose et le maintien de cables conducteurs electriques
FR2756113A1 (fr) * 1996-11-21 1998-05-22 France Etat Ensemble modulaire avec protection radioelectrique pour le cheminement de cables
WO2002031937A3 (fr) * 2000-10-06 2002-07-04 Adc Telecommunications Inc Gouttieres, raccords et couplages de cable optique
CN110071435A (zh) * 2019-04-30 2019-07-30 郑州泰宏电气有限公司 一种配电柜结构

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1138776A (en) * 1967-08-07 1969-01-01 Danzer Metal Works Co Raceway for electrical cables and wires adapted to retain rf energy

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1138776A (en) * 1967-08-07 1969-01-01 Danzer Metal Works Co Raceway for electrical cables and wires adapted to retain rf energy

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647525A1 (fr) * 1989-05-24 1990-11-30 Bticino Srl Garniture d'etancheite entre joints d'elements a assembler pour la pose et le maintien de cables conducteurs electriques
FR2756113A1 (fr) * 1996-11-21 1998-05-22 France Etat Ensemble modulaire avec protection radioelectrique pour le cheminement de cables
EP0844713A1 (fr) * 1996-11-21 1998-05-27 Etat-Francais représenté par le Délégué Général pour L'Armement Ensemble modulaire pour support de câbles avec protection radioélectrique
WO2002031937A3 (fr) * 2000-10-06 2002-07-04 Adc Telecommunications Inc Gouttieres, raccords et couplages de cable optique
US6512875B1 (en) 2000-10-06 2003-01-28 Adc Telecommunications, Inc. Optical cable troughs, fittings, and couplings
CN110071435A (zh) * 2019-04-30 2019-07-30 郑州泰宏电气有限公司 一种配电柜结构

Also Published As

Publication number Publication date
FI82789C (sv) 1991-04-10
SE8503320L (sv) 1987-01-05
FI870797A0 (fi) 1987-02-24
FI870797A7 (fi) 1987-02-24
FI82789B (fi) 1990-12-31
SE8503320D0 (sv) 1985-07-04
SE448588B (sv) 1987-03-02
EP0229819A1 (fr) 1987-07-29

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