WO2011051691A1 - Boîte de raccordement électrique - Google Patents

Boîte de raccordement électrique Download PDF

Info

Publication number
WO2011051691A1
WO2011051691A1 PCT/GB2010/002022 GB2010002022W WO2011051691A1 WO 2011051691 A1 WO2011051691 A1 WO 2011051691A1 GB 2010002022 W GB2010002022 W GB 2010002022W WO 2011051691 A1 WO2011051691 A1 WO 2011051691A1
Authority
WO
WIPO (PCT)
Prior art keywords
lid
base
box
electrical connection
connection box
Prior art date
Application number
PCT/GB2010/002022
Other languages
English (en)
Inventor
Robert Edward Clark
Original Assignee
Robert Edward Clark
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 Robert Edward Clark filed Critical Robert Edward Clark
Publication of WO2011051691A1 publication Critical patent/WO2011051691A1/fr

Links

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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/223—Insulating enclosures for terminals
    • 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
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/081—Bases, casings or covers
    • H02G3/083—Inlets
    • 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
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/506—Bases; Cases composed of different pieces assembled by snap action of the parts
    • 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
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/582—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable the cable being clamped between assembled parts of the housing
    • H01R13/5829—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable the cable being clamped between assembled parts of the housing the clamping part being flexibly or hingedly connected to the housing

Definitions

  • the present invention concerns improvements in and relating to electrical connection boxes.
  • electrical connection boxes also known as junction or terminal boxes
  • housings for multi-connector strips - ie strips that normally comprise a plurality of metal (eg brass) tubes each tube forming a terminal at each end with a clamping screw to secure a respective wire end in place to join wires together.
  • Electrical connection boxes of this type are disclosed in a number of patents such as, for example, GB 2,323,220 and GB 2,260,864. The uses for these boxes are many and various - one popular current use being to gang together down-lighters in floating ceilings.
  • the electrical connection box comprises a housing with a base part and a hinged mating lid part with locator lugs on the inner face of the base part for locating a multi- connector strip.
  • the box is configured only to allow entry and exit of cables through one end of the box and this limits usefulness.
  • the box is usable in-line, since it has an entry and exit opening at each end. In this case the lid is hinged to one side edge of the base part of the housing and clips down onto the opposing side edge of the base part.
  • the wires/ cables that enter and exit the housing are in all cases either loosely gripped merely by the narrowed entry/ exit opening or not gripped at all.
  • a major attraction of using multi-connector strips inside electrical connection boxes with hinged lids is the ease of installation, whereby the electrician can wire up large arrays of interconnected appliances such as down-lighters quickly and efficiently.
  • the lack of firm security of holding of the wires/ cables by the housing is a problem since the wires could dislodge from the electrical connection box if accidentally pulled on and there is increasing pressure from regulatory authorities to prevent such risk.
  • Exceptionally some boxes have been modified to include screw down clamping bands such as are used in electrical plugs, eg see UK Registered Design 3023086. However, these are time-consuming to use, leading to some electricians discontinuing use of electrical connection boxes for this reason.
  • the present invention seeks to provide a new approach to securing the wires/ cables in a junction box to address regulatory safety requirements while maintaining the installation speed and efficiency demanded by electricians.
  • an electrical connection box housing in use an electrical terminal for connecting together electrical conductors and which comprises a base and a lid that is coupled in use to the base, there being an aperture at at least one end of the box to allow entry/ exit of a said conductor and having securing means to secure the conductor in place in the box, the lid being pivoted to the base at an end of the base and the securing means being formed at or by an edge of the lid whereby as the lid is lowered about the pivotal axis to close against the base it brings the securing means into increasing pressing contact with the conductor to grip the conductor in place.
  • the electrical terminal is a multi-connector strip and suitably the box has means to hold the multi-connector strip in position therewithin.
  • the box has an in-line configuration with a first said aperture at a first end of the box and a second said aperture at a second end of the box, the lid comprising a first lid part pivoted to the base at the first end and a second lid part pivoted to the base at the second end, each lid part having an edge to serve as securing means to secure a respective conductor in place in the box.
  • one of the lid parts has an extension tab that overlaps with (suitably underlies) the other lid part when the two are closed and which preferably has a small fixing aperture therethrough for a bolt, screw, peg or other fixing means and which aligns with a corresponding small fixing aperture through the other lid part to fix the lid parts closed together and preferably to fix them to the base.
  • the base or an upstand therefrom may be provided with a further small fixing aperture or socket for the bolt, screw, peg or other fixing means to secure to. This and suitably each of the small fixing apertures is/ are screw-threaded.
  • the lid is, or lid parts are each, pivotally mounted to the base by a pair of aligned axle stubs or axle ends that pivot in opposing cradle mounts.
  • the base suitably has the cradle mounts formed in upstands therefrom. They may be formed in or on panels that form part of the side-walls of the box.
  • the lid is demountably pivotally mounted to the base.
  • the lid has a pair of aligned axle stubs or axle ends that each hook- engage into a respective cradle mount on the base.
  • the conductors are suitably cables of plastics ensheathed wire.
  • the securing means preferably have teeth/ protrusions, which suitably bite down onto the plastics of the cables to grip them securely but without damaging them.
  • These teeth/ protrusions may be somewhat blunted and preferably are substantially rigid. They are spaced from the base by a clearance to avoid damaging the conductors/ cables while firmly gripping them.
  • the base is provided with counter-teeth/ protrusions that suitably are positioned to substantially oppose, but off-set to approximately inter-digitate with the teeth/ protrusions of the lid or lid part. There is still clearance between the teeth of the lid and those of the base so as not to damage the conductors.
  • The, or each, edge of the lid forming the securing means preferably forms a lower in use edge of an end-wall of the box.
  • the lid or each lid part suitably further has sidewall panels depending therefrom that form at least part of the sidewalls of the box.
  • the sidewall panels of the lid or extensions thereof may be provided with detent lugs to releasably fasten to the base to assist in securing the lid or lid parts closed on the base.
  • the base has upstanding sidewall panels depending therefrom that form at least part of the sidewalls of the box.
  • the lugs on the lid or lid parts suitably engage in sockets which suitably are provided in or below the sidewalls of the box.
  • the box is formed of plastics with a fluorescent pigment in the moulding.
  • the pigment may be a tint pigment.
  • the fluorescent pigment will help electricians find the connection boxes easily, for example, when they are searching for them in dark attics or other ceiling voids with a torch.
  • Figures 1 to 5 are views of a first preferred embodiment that is designed to serve as a master electrical connection box and wherein:
  • Figure 1 is a perspective view of the box in assembled state but with the lid parts open
  • Figure 2 is a perspective view similar to Figure 1 but with the lid parts closed together;
  • Figure 3 is a top plan view corresponding to Figure 2;
  • Figure 4 is a side elevation view corresponding to Figure 2.
  • Figure 5 is an end elevation view corresponding to Figure 2.
  • Figures 6 to 10 are views of a second preferred embodiment that is designed to serve as a slave electrical connection box and wherein:
  • Figure 6 is a perspective view of the box in assembled state but with the lid parts open;
  • Figure 7 is a perspective view similar to Figure 6 but with the lid parts closed together;
  • Figure 8 is a top plan view corresponding to Figure 7;
  • Figure 9 is a side elevation view corresponding to Figure 7.
  • Figure 10 is an end elevation view corresponding to Figure 7.
  • FIGS. 1 to 5 show the master electrical connection box comprising a plastics moulding of three independent but demountably inter-engaged parts. These parts are a base 1 and a lid 2 of two parts 2a, 2b that are coupled to the base with one lid part 2a pivotally coupled to one end of the base 1 and the other lid part 2b pivotally coupled to the other end of the base 1.
  • a frontally extending tab portion 2c on one of the lid parts 2a extends to overlap with (underlie) the other lid part 2b and has a small fixing aperture 2d for a bolt to pass through to fasten the first lid part 2a and second lid part 2b together.
  • Corresponding small fixing apertures 2d, 4d are present in the frontal end of the lid part 2b and in a central column 4 upstanding from the base plate 1.
  • the central column 4 provides an anchoring point for the bolt to screw-threaded ly engage with and also further reinforces the closed lid of the box.
  • the base plate 1a further has a hole 1d at each end for screw- or bolt-fixing to a joist or other building structure to hold the master unit in place.
  • the box has an elongate rectangular shape as viewed in plan and side elevations and comprises a substantially flat base plate 1 a with upstanding panels 1 b along the lateral edges that form part of the side-walls of the box.
  • the lid parts 2a, 2b each have panels 3 along their lateral edges that depend downwardly forming the upper parts of the side walls of the box when they are in the closed state.
  • the sidewall panels 3 On one of the lid parts 2b the sidewall panels 3 have downwardly extended frontal portions 3c that extend to overlap the upstanding sidewall panels 1 b of the base 1.
  • These extended frontal portions 3c each have a rectangular ramp-shaped lug 3d on their inner face to engage in a respective corresponding rectangular aperture 1c in the upstanding sidewall panels 1b of the base 1.
  • the box is adapted to house an electrical terminal for connecting together a number of electrical conductors such as electrical cables of conductive metal wire ensheathed in an insulating plastics sleeve.
  • the preferred type of terminal to be installed in the box is the previously-described multi- connector strip, which suitably has, for example, six connection tubes for linking multiple cables for a ceiling down-lighter array. Cables are suitably fitted to the multi-connector strip first and the strip then installed in the box optionally lodged onto a detaining peg 1g upstanding from the base plate 1a. The strip is installed so that cables pass into and out of the box from opposing ends of the box,.
  • each lid part 2a, 2b has a downwardly depending end panel 3e that defines an end wall of the box when the lid parts 2a, 2b are mounted to the base 1 and pivoted to the closed state.
  • Each lid part 2a, 2b is mounted to the base 1 by a pair of co-axial axle stubs 5 that project from each opposing side of the lid part 2a, 2b adjacent to the end wall panel 2e. These axle stubs 5 each insert into a respective one of a pair of opposing mounting cradles 6 on the side wall panels 1b of the base 1.
  • the cradles 6 are formed as open-mouthed channels that turn upwardly to a blind end and allow the axle stubs 5 to be easily mounted therein and de-mounted therefrom simply by offering the lid part 2a, 2b to the base 1 with the axle stubs 5 presented to the mouths of the channels and then slid to the blind end of the channels and the lid part 2a, 2b then pivoted at that point so that it turns to the closed state, to be plane parallel to the base plate 1a, with the side wall panels 3 of the lid parts 1a, 1b there sitting atop the side wall panels 1b of the base 1.
  • the end wall panels 2e have a lower edge 2f that is adapted to function as a securing means to securely hold the cables in place in the box when the lid is closed.
  • the end wall lower edge 2f has a plurality of protrusions/ 'teeth' therealong and is spaced a short clearance above the base plate 1a sufficient to grip the cables against the base plate 1a without damaging the cables.
  • a set of counter- protrusions/ 'teeth' 1f is provided on the base plate 1a to enhance the gripping effect.
  • the base plate 1a has two bands of such counter- protrusions/ 'teeth' 1f, each several rows deep to provide optimal gripping effect to resist any abrupt pulling forces on the cables and whether the force is perpendicular to the end wall of the box or at an angle.
  • the clearance between the end walls 2e and base plate 1a provides the respective aperture at each end of the box to allow entry/ exit of the conductors and the lower edge 2f of those end walls 2e defines the securing means to secure the conductors in place in the box.
  • the end walls 2e are formed on the lid parts 2a, 2b that are pivoted to the base 1 at each end of the base 1. Accordingly, as the lid parts 2a, 2b are lowered about their pivotal axes to close against the base 1 this brings the edge 2f serving as the securing means into increasing pressing contact with the conductor to grip the conductor ever more firmly in place against the base plate 1.
  • any external pulling force subsequently applied to the cables may even tend to cause the lid 2a, 2b and teeth to grip the cables more firmly.
  • the electrician wishes to adjust the connections later this is easily done by simply unscrewing the bolt through the holes 2d,4d, then prising the lugs 3d free and tilting up, and optionally de-coupling, the lid parts 2a, 2b from the base 1.
  • the unit of this second embodiment differs from the first embodiment in that, as a slave connection unit, it is of lesser width, eg one half to one third of the width, compared to the width of the master connection unit.
  • the latching/clipping of the lid parts 2a, 2b to the base 1 is by longer lid sidewall panel extensions 3 that engage with sockets 1c that underlie the base sidewalls 1 b.
  • the slave unit has a shorter base plate 1a that lacks the extra end areas with screw-holes 1d since these slave units do not necessarily need to be fixed down. Instead the slave unit has short legs 1e.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Connection Or Junction Boxes (AREA)

Abstract

La présente invention concerne un boîtier de boîte de raccordement électrique utilisé dans une borne électrique pour connecter des conducteurs électriques et comportant un socle et un capot qui est couplé au socle en utilisation, une ouverture étant prévue au moins à une extrémité de la boîte pour permettre l'entrée/la sortie dudit conducteur et comprenant un moyen de fixation pour fixer le conducteur en place dans la boîte. Le capot est pivoté vers le socle à une extrémité du socle et le moyen de fixation est formé à ou par un bord du capot, de sorte que lors de l'abaissement du capot autour de l'axe de pivotement pour se refermer contre le socle, il entraîne le bord présentant le moyen de fixation en contact à pression constamment croissante avec le conducteur pour monter le conducteur en place. Cela permet l'assemblage rapide et efficace de la boîte de raccordement électrique et des connexions et permet la fixation en place fiable du câblage dans la boîte sans gêner grandement le processus d'installation.
PCT/GB2010/002022 2009-11-02 2010-11-02 Boîte de raccordement électrique WO2011051691A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB0919163.6A GB0919163D0 (en) 2009-11-02 2009-11-02 Electrical connection box
GB0919163.6 2009-11-02
GB0920250.8 2009-11-19
GB0920250.8A GB2474909B (en) 2009-11-02 2009-11-19 Electrical connection box

Publications (1)

Publication Number Publication Date
WO2011051691A1 true WO2011051691A1 (fr) 2011-05-05

Family

ID=41435006

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2010/002022 WO2011051691A1 (fr) 2009-11-02 2010-11-02 Boîte de raccordement électrique

Country Status (2)

Country Link
GB (2) GB0919163D0 (fr)
WO (1) WO2011051691A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2576263A (en) * 2016-05-18 2020-02-12 Electro Expo Ltd Housing system for electrical connectors

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260864A (en) 1991-10-24 1993-04-28 Bill Moule & Sons Ltd Terminal box with lid
CA2176693A1 (fr) * 1996-05-15 1997-11-16 Wang-Feng Chu Dispositif hydrofuge pour bouchon
GB2323220A (en) 1996-12-10 1998-09-16 Adrian Guilbert King An electrical junction box
US6074238A (en) * 1998-05-15 2000-06-13 Molex Incorporated Electrical tap connector with spreader means
US6152759A (en) * 1998-12-21 2000-11-28 Lucent Technologies Inc. Strain relief mechanism for an insulation displacement connector
US20020025716A1 (en) * 2000-08-22 2002-02-28 Yazaki Corporation Electric wire holding structure for connection box

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB316232A (en) * 1928-01-26 1929-07-26 George Hamer Scholes Improvements in or relating to electrical junction-boxes and the like
US3149896A (en) * 1960-11-04 1964-09-22 Bendix Corp Electrical connector
GB943875A (en) * 1961-01-09 1963-12-11 Henry & Thomas Ltd Improvements in electrical terminals
DE9203112U1 (de) * 1992-03-09 1992-04-30 Tehalit GmbH, 6751 Heltersberg Montageelement für Installationskanäle
NL1007154C1 (nl) * 1997-09-29 1999-03-30 Odink & Koenderink Bv Kabeldoorvoer door een opstaande wand van een uit een onderkast met deksel bestaande aftak- of verdeelkast.
JP2001186630A (ja) * 1999-12-24 2001-07-06 Sumitomo Wiring Syst Ltd 電気接続箱
DE102008051482A1 (de) * 2008-04-01 2009-10-08 Zumtobel Lighting Gmbh Zugentlastungs-Vorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260864A (en) 1991-10-24 1993-04-28 Bill Moule & Sons Ltd Terminal box with lid
CA2176693A1 (fr) * 1996-05-15 1997-11-16 Wang-Feng Chu Dispositif hydrofuge pour bouchon
GB2323220A (en) 1996-12-10 1998-09-16 Adrian Guilbert King An electrical junction box
US6074238A (en) * 1998-05-15 2000-06-13 Molex Incorporated Electrical tap connector with spreader means
US6152759A (en) * 1998-12-21 2000-11-28 Lucent Technologies Inc. Strain relief mechanism for an insulation displacement connector
US20020025716A1 (en) * 2000-08-22 2002-02-28 Yazaki Corporation Electric wire holding structure for connection box

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2576263A (en) * 2016-05-18 2020-02-12 Electro Expo Ltd Housing system for electrical connectors
GB2576263B (en) * 2016-05-18 2020-07-29 Electro Expo Ltd Housing system for electrical connectors
TWI743124B (zh) * 2016-05-18 2021-10-21 英商電博會有限公司 用於電連接器之容納系統及具有此容納系統之電連接器

Also Published As

Publication number Publication date
GB2474909B (en) 2012-07-18
GB0920250D0 (en) 2010-01-06
GB0919163D0 (en) 2009-12-16
GB2474909A (en) 2011-05-04

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