EP2400594B1 - Kabelanschlusssystem - Google Patents

Kabelanschlusssystem Download PDF

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Publication number
EP2400594B1
EP2400594B1 EP20110170795 EP11170795A EP2400594B1 EP 2400594 B1 EP2400594 B1 EP 2400594B1 EP 20110170795 EP20110170795 EP 20110170795 EP 11170795 A EP11170795 A EP 11170795A EP 2400594 B1 EP2400594 B1 EP 2400594B1
Authority
EP
European Patent Office
Prior art keywords
fastener
tool
connector body
wall
external surface
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.)
Not-in-force
Application number
EP20110170795
Other languages
English (en)
French (fr)
Other versions
EP2400594A2 (de
EP2400594A3 (de
Inventor
Bruce James Ogden
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.)
LEGEND CORPORATE SERVICES PTY LTD.
Original Assignee
Legend Corporate Services Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2010902786A external-priority patent/AU2010902786A0/en
Application filed by Legend Corporate Services Pty Ltd filed Critical Legend Corporate Services Pty Ltd
Publication of EP2400594A2 publication Critical patent/EP2400594A2/de
Publication of EP2400594A3 publication Critical patent/EP2400594A3/de
Application granted granted Critical
Publication of EP2400594B1 publication Critical patent/EP2400594B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5213—Covers

Definitions

  • the present invention relates to the field of electrical cable connections.
  • One known form of mechanical connector for connecting electrical cables comprises an electrically conductive connector body having one or more tunnels for receipt of cables to be connected. Threaded fasteners extend through threaded apertures formed in the body and communicate with each tunnel. The threaded fasteners are threadingly advanced through the threaded apertures such that the leading face of the fastener engages the conductor of the cable located in the tunnel, thereby forming an electrical connection between the cable and the body.
  • shear head fasteners have been utilised in such connection devices, configured such that the head of the fastener breaks from the body of the fastener after application of a predetermined torque which governs the compressive load applied to the cable by the leading end of the fastener.
  • the remaining body of the fastener typically protrudes from the connector body and may present sharp edges or voids.
  • the exposed portion of fastener typically needs to be filed back level with the connector body for aesthetical considerations and to minimise or eliminate any "corona effect" for medium voltage applications.
  • the degree to which the fastener body protrudes from the connector body will generally vary dependent upon the size of cable being joined, given that most mechanical connectors accept a range of cable diameters.
  • the present invention provides a cable connection system comprising:
  • said fastener comprises two said slots and said installation tool comprises two said tabs, each adapted to be received in one of said slots.
  • slots are substantially diametrically opposed.
  • said tool comprises a tool body adapted to be received in a cavity defined by said fastener wall and an outer tube arranged about said tool body, said tab extending between said tool body and said outer tube and said detent surface being defined by a leading end of said outer tube.
  • said tool further comprises a handle extending from said outer tube.
  • said external surface of said connector body is provided with a frustoconical region extending about said threaded aperture, said detent surface having a matching taper for engaging said frustoconical region.
  • said system further comprises a plug adapted to be received in said aperture following installation of said fastener so as to cover a remaining portion of said fastener.
  • said plug has a head configured to be substantially flush with said external surface of said connector body when received in said aperture.
  • said fastener is formed of brass and said tool is formed of steel.
  • a cable connector comprising:
  • said fastener comprises two said slots, each adapted to receive a tab of the installation tool.
  • said slots are substantially diametrically opposed.
  • said external surface of said connector body is provided with a frustoconical region extending about said threaded aperture, for engaging the detent surface of the installation tool having a matching taper.
  • a cable connection system comprises a cable connector comprising a connector body 10, and a fastener 20, in combination with an installation tool 30 and, optionally, a plug 40.
  • the connector body 10 is formed of an electrically conductive material, such as brass or aluminium, and is provided with a tunnel 11 for receipt of a cable to be connected.
  • the connector body 10 is also provided with a threaded aperture 12 that communicates with the tunnel 11 and opens onto an external surface 13 of the connector body 10.
  • the connector body 10 may be of any of various forms, including a cable terminal lug, link, or any of other various known forms of mechanical electrical connector.
  • the connector body 10 may be provided with two or more tunnels 11 and associated threaded apertures 12 for separate receipt of multiple electrical cables. Alternatively, it is envisaged that the connector body 10 may be provided with other means for connecting additional cables to the connector body 10 by any of various other known means.
  • the connector body 10 may be provided with two or more threaded apertures 12 communicating with the same tunnel 11, so as to provide two (or more) connection points as may be dictated by the requirements of local authorities.
  • the external surface 13 is provided with an annular or tapered or frustoconical region 14 that extends about the threaded aperture 12, as better depicted in Figure 6 .
  • the fastener 20 is formed of an electrically conductive material, typically a relatively weak material such as brass.
  • the fastener 20 extends between a fastener leading face 21 and a fastener trailing end 22.
  • the fastener 20 has a hollow fastener body defined by a substantially cylindrical frangible fastener wall 23 so as to provide a rearwardly facing cavity 25 in the fastener 20.
  • the fastener wall 23 has at least one, and here two, slots 24 formed therein and extending from the fastener trailing end 22 towards the fastener leading face 21. In the arrangement depicted, the two slots 24 are diametrically opposed.
  • the fastener wall 23 is externally threaded for engagement with the threaded aperture 12 of the connector body 10.
  • the thickness of the fastener wall 23 is selected so as to fail at a predetermined shear stress resulting from application of a predetermined torque to the fastener 20, as will be discussed further below.
  • the leading face 21 of the fastener 20 is typically continuous, with the leading region of the fastener 20 between the end of the slot 24 and the leading face 21 being solid. For applications where insulation is stripped from the conductor of a cable prior to receipt within the tunnel 11, or where the cable is in the form of an uninsulated conductor, the leading face 21 will typically be flat.
  • leading face 21 may be configured with an insulation piercing feature or features, or might alternately co-operate with an insulating piercing device located between the leading face 21 and cable.
  • the installation tool 30 is adapted to rotatably drive the fastener 20 through the threaded aperture 12 of the connector body 10.
  • the tool specifically has a pair of drive tabs 31 that are adapted to be slidingly received in the slots 24 of the fastener 20.
  • the installation tool 30 also has a detent surface 32 that is adapted to engage the external surface 13 of the connector body 10 adjacent the threaded aperture 12.
  • the detent surface 32 has a taper matching the frustoconical region 14 that extends about the threaded aperture 12 such that the tapered detent surface 32 engages the frustoconical region 14, as will be further discussed below.
  • the specific installation tool 30 depicted is configured in the form of a tool body 33 that is here of generally cylindrical form and sized to be received in a cavity defined by the fastener wall 23.
  • the installation tool 30 further has an outer tube 34 concentrically arranged around the tool body 33 with the drive tabs 31 extending between, and welded to, the tool body 33 and outer tube 34.
  • the detent surface 32 is defined by the leading end of the outer tube 34.
  • An annular passage 35 is defined between the tool body 33 and outer tube 34.
  • the annular passage 35 is sized to snugly receive the fastener wall 23.
  • a handle 36 radially extends from the outer tube 34 for a user to apply torque to the installation tool 30.
  • the leading end 31a of each of the drive tabs 31 is flush with the leading edge of the tapered detent surface 32 defined at the leading end of the outer tube 34.
  • the plug 40 which may be formed of plastic or any other suitable material, has a substantially cylindrical plug body 41 that is sized to be neatly received within the cavity 25 of the fastener 20 following installation, as will be discussed below.
  • the plug body 41 may be provided with one or more slots 42 and sized to provide an interference fit with the fastener wall 23 so as to assist in retaining the plug 40 following installation.
  • the plug 40 further has a head 42 with a tapered side wall 43 matching the frustoconical region 14 of the external surface 13 of the connector body 10 such that, when installed, the plug head 42 is substantially flush with the external surface 13.
  • a cable 1 is inserted into the tunnel 11 of the connector 10 such that it passes beyond the threaded aperture 12.
  • the fastener 20 will typically already be threadingly received in the threaded aperture 12 with the leading face 21 located adjacent to a wall of the tunnel 11.
  • the installation tool 30 is then applied to the fastener 20, aligning the drive tabs 31 with the slots 24.
  • the installation tool 30 is pushed into the fastener 20 until the detent surface 32 of the installation tool 30 engages the frustoconical region 14 of the external surface 13 of the connector body 10. This fixes the longitudinal location of the drive tabs 31 relative to the external surface 13 of the connector body 10.
  • the leading end 31a of the drive tabs 31 are generally aligned with the intersection between the frustoconical region 14 and the threaded aperture 12.
  • Torque is then applied to the installation tool 10 manually via the handle 36, thereby driving the fastener 20 into the threaded aperture 12, advancing the leading face 21 into the tunnel 11 towards the cable 1.
  • the installation tool 30 remains in the same position as a result of engagement of the detent surface 32 with the frustoconical region 14. Accordingly, the slots 24 advance over the drive tabs 31.
  • the fastener wall 23 will fail at this location, which is fixed relative to the external surface of the connector body. Accordingly, the fastener 30 will reliably fail at a location generally corresponding to the intersection between the frustoconical region 14 and the threaded aperture 12, irrespective of the size of cable 1.
  • the trailing failed region of the fastener is then allowed to fall from the connector body 10 and the plug 40 is applied to the connector body 10 to cover the remaining portion of the fastener 20 and the threaded aperture 12.
  • the plug body 41 is received within the cavity 25 of the fastener 20 and the tapered side wall 43 of the head 42 of the plug 40 engages the frustoconical region 14 of the external surface 13 of the connector body 10.
  • the head 42 remains flush with the external surface 13, providing a neat aesthetic appearance and inhibiting any "corona" effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (9)

  1. Kabelverbindungssystem, umfassend:
    einen Verbindungskörper (10), der aus einem elektrisch leitenden Material gebildet ist, wobei der Verbindungskörper einen Durchstich (11) zur Aufnahme eines zu verbindenden Kabels und eine mit einem Gewinde versehene Öffnung (12) aufweist, die mit dem Durchstich (11) in Verbindung steht und sich zu einer äußeren Oberfläche (13) des Verbindungskörpers (10) öffnet,
    ein Befestigungsmittel (20), das aus einem elektrisch leitenden Material gebildet ist und sich zwischen einer Befestigungsmittelvorderseite (21) und einem Befestigungsmittelhinterende (22) erstreckt, wobei das Befestigungsmittel (20) einen hohlen Befestigungsmittelkörper aufweist, der von einer Befestigungsmittelwand (23) definiert wird und sich von dem Befestigungsmittelhinterende (22) in Richtung der Befestigungsmittelvorderseite (21) erstreckt, wobei die Befestigungsmittelwand (23) mit einem Außengewinde zum Belegen der mit einem Gewinde versehenen Öffnung (12) versehen ist, und
    ein Installationswerkzeug (30), das dazu ausgelegt ist, das Befestigungsmittel (20) drehend in die mit einem Gewinde versehene Öffnung (12) einzubringen, wobei das Werkzeug (30) einen Antriebsvorsprung (31) aufweist, der dazu ausgelegt ist, gleitend in einem Schlitz (24) aufgenommen zu werden und ein Drehmoment von dem Werkzeug (30) auf die Befestigungsmittelwand (23) an dem Schlitz (24) zu übertragen, wobei das Kabelverbindungssystem dadurch gekennzeichnet ist, daß
    die Befestigungsmittelwand eine im wesentlichen zylindrische zerbrechliche Wand ist, in der der Schlitz (24) ausgebildet ist, und
    das Werkzeug (30) ferner eine Anschlagoberfläche (32) aufweist, die dazu ausgelegt ist, die äußere Oberfläche (13) des Verbindungskörpers (10), die an die Öffnung (12) angrenzt, zu belegen, wodurch der Weg, den der Vorsprung (31) in dem Schlitz (24) zurücklegen kann, bei der Verwendung so limitiert wird, daß unter Anwendung eines vorbestimmten Drehmoments des Werkzeugs (30) die Befestigungsmittelwand (23) an dem Vorsprung (31) an einer vorbestimmten Stelle relativ zu der äußeren Oberfläche (13) des Verbindungskörpers (10) bricht.
  2. System nach Anspruch 1, wobei das Befestigungsmittel (20) zwei Schlitze (24) umfaßt und das Installationswerkzeug (30) zwei Vorsprünge (31) umfaßt, die jeweils dazu ausgelegt sind, in einem der Schlitze (24) aufgenommen zu werden.
  3. System nach Anspruch 2, wobei die Schlitze (24) sich im wesentlichen diametral gegenüberliegen.
  4. System nach einem der Ansprüche 1 bis 3, wobei das Werkzeug (30) einen Werkzeugkörper (33) umfaßt, der dazu ausgelegt ist, in einer Ausnehmung (25) aufgenommen zu werden, die von der Befestigungsmittelwand (23) und einem äußeren Rohr (34), das um den Werkzeugkörper (33) angeordnet ist, definiert wird, wobei der Vorsprung sich zwischen dem Werkzeugkörper (33) und dem äußeren Rohr (34) erstreckt und die Anschlagoberfläche (32) durch ein Vorderende des äußeren Rohrs (34) definiert wird.
  5. System nach Anspruch 4, wobei das Werkzeug ferner einen Handgriff (36) umfaßt, der sich von dem äußeren Rohr (34) erstreckt.
  6. System nach einem der Ansprüche 1 bis 5, wobei die äußere Oberfläche (13) des Verbindungskörpers (10) mit einem kegelstumpfförmigen Bereich (14) versehen ist, der sich über der mit einem Gewinde versehenen Öffnung (12) erstreckt, wobei die Anschlagoberfläche (32) einen passenden Kegel zum Belegen des kegelstumpfförmigen Bereichs (14) aufweist.
  7. System nach einem der Ansprüche 1 bis 6, wobei das System ferner einen Stopfen (40) umfaßt, der dazu ausgelegt ist, in der Öffnung (12) nach Installation des Befestigungsmittels (20) aufgenommen zu werden, um einen verbleibenden Abschnitt des Befestigungsmittels (20) abzudecken.
  8. System nach Anspruch 7, wobei der Stopfen (40) einen Kopf (42) aufweist, der so konfiguriert ist, daß er im wesentlichen mit der äußeren Oberfläche (13) des Verbindungskörpers (10) bündig ist, wenn er in der Öffnung (12) aufgenommen ist.
  9. System nach einem der Ansprüche 1 bis 8, wobei das Befestigungsmittel (20) aus Messing ausgebildet ist und das Werkzeug (30) aus Stahl ausgebildet ist.
EP20110170795 2010-06-24 2011-06-21 Kabelanschlusssystem Not-in-force EP2400594B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2010902786A AU2010902786A0 (en) 2010-06-24 Cable connection system

Publications (3)

Publication Number Publication Date
EP2400594A2 EP2400594A2 (de) 2011-12-28
EP2400594A3 EP2400594A3 (de) 2012-02-22
EP2400594B1 true EP2400594B1 (de) 2013-04-24

Family

ID=44562725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110170795 Not-in-force EP2400594B1 (de) 2010-06-24 2011-06-21 Kabelanschlusssystem

Country Status (3)

Country Link
EP (1) EP2400594B1 (de)
AU (1) AU2011202893B1 (de)
NZ (1) NZ593496A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI127655B (en) 2017-09-08 2018-11-30 Ensto Oy CUTTING SCREW
IT201900001625A1 (it) * 2019-02-05 2020-08-05 Cembre Spa Vite tranciabile a torsione per giunzioni elettriche
EP3792509B1 (de) * 2019-09-10 2023-08-30 Tyco Electronics SIMEL Drehmomentbegrenzungsmutter für einen abreissbolzen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2591009A (en) * 1948-12-20 1952-04-01 Honeywell Regulator Co Separable electrical connector
US4653309A (en) * 1986-01-07 1987-03-31 The Boeing Company Hand tool for installing plastic fasteners
EP0984176B1 (de) * 1998-08-18 2001-03-07 GERHARD PETRI GmbH & CO. KG ELEKTROTECHNISCHE FABRIK Abreisskopfschraube
FR2784780B1 (fr) * 1998-10-20 2002-09-20 Schlumberger Ind Sa Ensemble de plombage
US6361258B1 (en) * 2000-07-06 2002-03-26 Gary V. Heesch Permanently placeable fasteners, inserter head for fastener placement and related methods
US6511341B1 (en) * 2001-07-23 2003-01-28 Itt Manufacturing Enterprises, Inc. Break-away device
DE102004039811A1 (de) * 2004-08-11 2006-02-23 Pfisterer Kontaktsysteme Gmbh & Co. Kg Befestigungsmittel, insbesondere Abreißschraube, zugehöriges System und Verfahren zum Eindrehen des Befestigungsmittels
US20060110986A1 (en) * 2004-11-20 2006-05-25 Al-Cop Llc Junction failure inhibiting connector
ATE462084T1 (de) * 2007-12-11 2010-04-15 Nexans Abscherschraube

Also Published As

Publication number Publication date
EP2400594A2 (de) 2011-12-28
AU2011202893B1 (en) 2011-08-11
EP2400594A3 (de) 2012-02-22
NZ593496A (en) 2011-09-30

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