WO1997012434A1 - Ameliorations apportees a des barres omnibus ou relatives a celles-ci - Google Patents

Ameliorations apportees a des barres omnibus ou relatives a celles-ci Download PDF

Info

Publication number
WO1997012434A1
WO1997012434A1 PCT/GB1996/002345 GB9602345W WO9712434A1 WO 1997012434 A1 WO1997012434 A1 WO 1997012434A1 GB 9602345 W GB9602345 W GB 9602345W WO 9712434 A1 WO9712434 A1 WO 9712434A1
Authority
WO
WIPO (PCT)
Prior art keywords
legs
cam member
cam
tapping unit
unit
Prior art date
Application number
PCT/GB1996/002345
Other languages
English (en)
Inventor
Kevin Brooks
Robert Butcher
Andrew Reynolds
Original Assignee
Klockner-Moeller Gmbh
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 Klockner-Moeller Gmbh filed Critical Klockner-Moeller Gmbh
Priority to AU69971/96A priority Critical patent/AU6997196A/en
Priority to EP19960931178 priority patent/EP0852840A1/fr
Publication of WO1997012434A1 publication Critical patent/WO1997012434A1/fr

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
    • H02G5/00—Installations of bus-bars
    • H02G5/06—Totally-enclosed installations, e.g. in metal casings
    • H02G5/08—Connection boxes therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
    • H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
    • H02B1/052—Mounting on rails

Definitions

  • This invention relates to improvements in or relating to busbars and is more particularly concerned with the manner of attachment of a tapping box or tapping unit onto busbar trunking.
  • Tapping boxes are attached to busbar trunking by four hooked locking legs located near respective bottom corners of the box, said legs usually having at least a hook portion or foot movable behind or over a flange of the trunking in order to attach the tapping box thereto.
  • a safety "lid interlock device” which generally ensures that the tapping box cannot be removed from the trunking whilst a protective device (for example a circuit breaker) also interlocked to the lid is in the on-position.
  • a protective device for example a circuit breaker
  • Such interlock devices may interfere with the lid of the tapping box preventing closure thereof whilst the tapping box is being installed. Thus, only after the tapping box has been installed will the interlock device allow the tapping box lid to be closed and the tapping box energised.
  • the installation of the tapping box onto the trunking may take longer than should really be necessary and may require a greater number of tightening operations than need necessarily be the case. Consequently, it may take longer and require more operations to remove the tapping box if required and the manner in which the tapping box may be attached or removed may not always be as obvious to the operator as it could be.
  • a further important problem that may occur with at least some arrangements is that the hook portions or feet of the locking arms and/or the interlock device may vibrate loose with obvious disadvantages.
  • a tapping unit having a plurality of locking members or legs provided with hook portions or feet that can be moved into and out of locking engagement with a busbar, said locking members or legs being connected to an over-centre cam mechanism, said cam mechanism being rotatable to move the locking members or legs inwardly and upwardly towards a bottom of the tapping box and outwardly and downwardly away from the bottom of the tapping box, depending upon the direction of rotation of the cam mechanism, said cam mechanism being co-operable with a lid interlock device preventing or allowing a lid of the tapping box to be closed depending upon the position of a cam member of said cam mechanism.
  • a locking arrangement for locking a tapping unit to a busbar, said arrangement comprising a plurality of locking members or legs mounted, in use, on said unit and movable into and out of locking engagement with a busbar, said legs being movable together inwardly and upwardly towards a bottom of the unit by movement of a connection or cam member of said arrangement, preferably on rotation of said connection or cam member, said connection or cam member preferably being co-operable with a lid interlock device.
  • a cam mechanism for actuating a lid interlock device on a tapping unit, said cam mechanism preferably being an over centre mechanism and having a cam member with a cam surface co-operable with an interlock rod of said lid interlock device, said rod being movable relative to the unit on rotation of said cam member, to thereby prevent or allow closure of a lid of the tapping unit depending upon the position of the rod.
  • the lid will be connected to the tapping unit by a hinge connection.
  • Each locking member or leg may be pivotally connected to one end of an associated link arm which is in turn connected to the cam mechanism.
  • Each link arm may be generally L-shaped with a shorter limb of said link arm being connected in each case to the cam mechanism preferably at opposed diametrical locations of the cam member which may be generally disc shaped.
  • the cam member is provided with means (for example a hexagon hea ) for engaging a tool (for example a spanner) in order to rotate the cam member.
  • the locking members or legs connected to the cam member by way of link arms are so mounted that on one particular direction of rotation of the cam member (for example anti-clockwise) the link arms can move the locking members or legs inwardly towards one another and upwardly towards the bottom of the tapping unit, in use, to attach the unit to the busbar trunking.
  • Each locking member or leg may be connected to a tapping unit by pins received in associated slots.
  • the cam member may comprise a part-circular cam surface (extending for example throughout about 180°) connected to (straight) cam surface portions which each extend for about 90° of rotation and which adjoin at a pea .
  • the lid interlock device may comprise a rod which is co-operable with the cam member.
  • the rod has one end thereof spring-loaded into contact with a cam surface of the cam member (said spring loading may be provided by a helical compression spring).
  • said spring loading may be provided by a helical compression spring.
  • the tapping unit will have two opposed locking members or legs provided at one end of the unit with two further opposed locking members or legs being provided at an opposite end of the unit.
  • Rotation of the cam mechanism will usually be arranged to move the locking members or legs only at said one end of the tapping unit.
  • said rotation of the cam mechanism may be arranged to move said locking members or legs at said one end together with the further legs at the opposite end of said unit (or said further legs may be moved by a separate mechanism).
  • Said further legs may or may not be connected by a further cam mechanism to a further lid interlock device at said opposite end.
  • a tapping unit having a plurality of locking members or legs that can be moved into and out of locking engagement with a busbar, said tapping unit having one or more of the following features:
  • connection or cam member to engage or disengage a busbar
  • said connection or cam member preferably actuating a lid interlock device
  • FIGURE 1 shows an end view of the tapping unit which is ready for installation onto busbar trunking
  • FIGURE 2 shows a view similar to FIGURE 1 but with the tapping unit fully engaged or installed onto the busbar trunking;
  • FIGURE 3 shows an enlarged detail view of a cam member of the tapping unit
  • FIGURE 4 shows an end view of a tapping unit similar to FIGURE 1 but with a lid omitted and incorporating a modified lid interlock device;
  • FIGURE 5 shows a view similar to FIGURE 2 but of the modified arrangement shown in FIGURE 4;
  • FIGURE 6 shows a side view of the tapping unit shown in FIGURE 5;
  • FIGURE 7 shows a view similar to FIGURE 3 of a modified cam member
  • FIGURE 8 shows a plan view (looking in direction of arrow B) of the cam member shown in FIGURE 7.
  • a tapping unit or box 1 is generally of a form known per se and may be provided with a hinged lid 2 shown in chain dotted lines.
  • FIGURE 1 shows the tapping box 1 about to be installed or engaged onto a length of busbar trunking 3 whereas FIGURE 2 shows the fully installed position of the tapping box on said trunking.
  • Tapping box 1 includes locking legs 4 and 5 mounted in opposed relationship on a front end la of the tapping box 1. It is envisaged that two further locking legs (not shown) will be provided on the tapping box with said two further locking legs mounted in similar fashion as locking legs 4 and 5 on the rear end (not shown) of the tapping box 1.
  • Locking legs 4 and 5 are provided with hook portions or feet 4a, 5a which, as shown more particularly in FIGURE 2, engage tightly over or behind associated busbar flanges 3a and 3b, in the fully installed position (FIGURE 2).
  • Each locking leg 4,5 is pivotally connected to one end of the longer limb of an L-shaped link arm 6,7.
  • the shorter limb of said link arm 6,7 is in turn pivotally connected to a cam mechanism 8 at opposed diametrical locations of disc-shaped connection or cam member 9 (see FIGURE 3) of said cam mechanism. Rotation of the cam member 9 in the direction of arrow "A" (i.e.
  • Locking leg 4 is mounted at the bottom left on the front end la of the tapping box 1 by means of two vertically spaced pins 11 and 12, the lower pin 12 being offset slightly outwardly of the upper pin 11.
  • the pins 11 and 12 are received in associated slots 13 and 14, the upper slot being shorter than the lower and at a somewhat steeper incline as shown.
  • the pins 11 and 12 extend outwardly from the end wall la of the tapping box and are fixed in position.
  • the link arm 6 is pivoted at one end thereof to an upper portion of locking leg 4, the pivotal location 15 being inbetween the two slots 13 and 14 as shown in FIGURES 1 and 2.
  • Locking legs 4 and 5 are identical and locking leg 5 is mounted onto pins 16 and 17 which locate in associated slots 18 and 19 as shown.
  • the mounting arrangement of locking leg 5 is substantially a mirror image of the mounting arrangement for locking leg 4 apart from the arrangement of the link arms 6 and 7.
  • the locking legs 4 and 5 are arranged in the same vertical plane as one another and the link arms 6 and 7 are arranged in the same vertical plane as one another slightly outward of the legs 4 and 5 and the cam member 9.
  • Cam member 9 is of part circular shape and is fixed to rotate about axis 20 with hexagon head 21 rotatable by means of a spanner or other tool in a manner which should be readily envisaged.
  • the hexagon head 21 is attached to the cam member 9 by means of a short circular shaft (not shown) and indeed the hexagon head 21, short shaft and cam member 9 can be made in one piece.
  • cam member 9 has a first, semi-circular cam surface portion 9a which smoothly adjoins a second straight cam surface portion 9b which extends for about 90° of rotation and smoothly adjoins an oppositely angled straight cam surface portion 9c which extends for about a further
  • cam portions 9b and 9c form two sides of a squat generally triangular or smoothly peaked profile occupying about 180° of the cam member 9.
  • the cam surfaces 9a,9b and 9c are co-operable with the free end of a rod 22 of lid interlock device 10, said rod being mounted in two vertically spaced, right-angled receiving brackets 23,24 provided with holes through which the interlock rod 22 passes.
  • the rod 22 is constrained to vertical movement within the brackets 23 and 24.
  • a compression spring 25 is located around the rod 22 inbetween a horizontally extending flange 24a of mounting bracket 24 and an annular collar 22a surrounding rod 22 to thereby bias the rod 22 downwardly so that the bottom free end thereof will engage the cam surface portions 9a,9b,9c of the cam member 9 in a manner which should be evident from the drawings, in order to control the height of the upper end of the rod 22 depending upon the angular position of the cam member 9.
  • the rear end of the tapping box 1 is not shown it could be identical to end la having the same cam mechanism, locking legs and lid interlock device as afore- described in relation to front end la.
  • the cam mechanism at the rear may be joined to the cam mechanism on the front and operated simultaneously with the front mechanism using a spanner on the hexagon head 21.
  • the front and rear cam mechanisms are operable independently of one another by separate spanners.
  • rotation of the hexagon head 21 may rotate link arms connected to locking legs on the rear of the tapping box as well as the link arms 6 and 7, to lock all four legs onto the busbar substantially simultaneously but operating only one interlock rod 22.
  • the tapping box 1 is first introduced onto the trunking 3 as shown in FIGURE 1 with the cam member 9 in the angular position shown and the locking legs 4,5 diverging outwardly from one another free of the busbar trunking 3.
  • the rod 22 of the interlock device 10 prevents the lid 2 from being closed by the upper end of the rod engaging a rim of the lid as should be evident from FIGURE 1.
  • the hexagon head 21 can be engaged by a spanner and rotated anti-clockwise in the direction of arrow "A" to pull the locking legs 4 and 5 (and, if desired, locking legs provided on the rear of the tapping box) inwardly and upwardly so that the feet 4a and 5a (and possibly the feet of the other locking legs) move over or behind the flanges 3a and 3b of the busbar trunking 3.
  • FIGURES 4 to 6 show a modified tapping box 101.
  • the tapping box 101 is similar to tapping box 1 previously described save for a modified lid interlock device 110.
  • the spring loaded rod 22 has been replaced by a long L-shaped strip of sheet steel with the bottom portion 110a of the L-shaped strip 110 resting on the appropriate cam surface 9a, 9b or 9c of cam member 9 depending upon the annular position of the cam member.
  • the flat L-shaped strip 110 can rest substantially flush with the end 101a of the tapping box 101 and said strip 110 need not be spring-loaded onto the cam member.
  • the strip 110 may be retained to the end 101a of the tapping unit 101 by way of appropriate screw fasteners (not shown) fitted through elongate slots 110b and 110c as shown.
  • the strip 110 will have a limited range of motion in a vertical direction governed by the slots 110b and 110c.
  • the tapping unit 101 can be connected to the busbar trunking 103 in a similar manner as tapping unit 1, the only difference in the arrangement being in the form of rod interlock device.
  • FIGURES 7 and 8 show views of a modified cam member 109 with integral hexagon head 121 and it is believed that this form of cam member is particularly advantageous with the L-shaped strip interlock device 110.
  • cam surface 109b is now shorter than cam surface 109c whilst cam surface 109a is of similar length to cam surface 9a of cam member 9.
  • the peak P' defined between cam surfaces 109b and 109c is now offset somewhat to the left as shown in FIGURE 7 yielding an asymmetrical appearance to the cam member 109.
  • cam member 109 shown in FIGURE 7 allows the lid interlock device (more particularly the strip 110) to move more smoothly into and out of the upper and lower height positions occupied by the strip 110, said strip offering less resistance to movement of the cam member than would otherwise be the case.
  • the scope of the present invention is not to be unduly limited by the particular choice of terminology and that a specific term may be replaced or supplemented by any equivalent or generic term.
  • individual features, method or functions related to the tapping unit, cam mechanism, lid interlock device, or locking arrangement or parts thereof alone or in combination might be individually patentably inventive. The singular may include the plural or vice versa.
  • any disclosure in this specification of a range for a variable or parameter shall be taken to include a disclosure of any selectable or derivable subrange within that range and shall be taken to include a disclosure of any value for the variable or parameter found within or at an end of the range.

Landscapes

  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

Une boîte de prise (1) comporte des bras de verrouillage (4 et 5) pourvus de parties formant crochet (4a, 5a) venant s'appliquer sur les rebords associés d'une barre omnibus lors de la rotation d'une came (9) dans le sens de la flèche A. La rotation de la came (9) actionne un dispositif de verrouillage de couvercle (10), permettant ou interdisant la fermeture du couvercle.
PCT/GB1996/002345 1995-09-27 1996-09-24 Ameliorations apportees a des barres omnibus ou relatives a celles-ci WO1997012434A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU69971/96A AU6997196A (en) 1995-09-27 1996-09-24 Improvements in or relating to busbars
EP19960931178 EP0852840A1 (fr) 1995-09-27 1996-09-24 Ameliorations apportees a des barres omnibus ou relatives a celles-ci

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9519679.6 1995-09-27
GB9519679A GB2305784B (en) 1995-09-27 1995-09-27 Improvements in or relating to busbars

Publications (1)

Publication Number Publication Date
WO1997012434A1 true WO1997012434A1 (fr) 1997-04-03

Family

ID=10781340

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1996/002345 WO1997012434A1 (fr) 1995-09-27 1996-09-24 Ameliorations apportees a des barres omnibus ou relatives a celles-ci

Country Status (4)

Country Link
EP (1) EP0852840A1 (fr)
AU (1) AU6997196A (fr)
GB (1) GB2305784B (fr)
WO (1) WO1997012434A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101925281A (zh) * 2009-06-15 2010-12-22 洛克威尔自动控制技术股份有限公司 用于良好附连的集成din轨道附连零件
CN111884159A (zh) * 2020-08-19 2020-11-03 大航有能电气有限公司 一种便于插接箱插脚插入母线槽的压进机构
FR3124031A1 (fr) * 2021-06-14 2022-12-16 Schneider Electric Industries Sas Coffret de dérivation pour jeu de barres
WO2023241184A1 (fr) * 2022-06-13 2023-12-21 江苏向荣电气有限公司 Boîte de sélection de barre sous gaine interverrouillée et système de bus intelligent

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103573764B (zh) * 2013-11-05 2015-07-29 江苏威腾母线有限公司 一种母线槽插接箱锁紧装置
DE102017126720B4 (de) 2017-11-14 2019-09-05 Odu Gmbh & Co. Kg Steckverbindervorrichtung mit einem Mechanismus zum aneinander Fixieren und voneinander Lösen der Steckverbindervorrichtung und einer Gegensteckverbindervorrichtung
CN111817238B (zh) * 2020-07-06 2022-03-08 威腾电气集团股份有限公司 一种具有插接驱动机构的插接箱

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122603A (en) * 1962-11-21 1964-02-25 Gen Electric Busway plug clamp
US3339038A (en) * 1966-04-14 1967-08-29 Square D Co Bus duct plug
US3657606A (en) * 1971-03-25 1972-04-18 Cutler Hammer Inc Bus duct plug-in unit with improved interlock
GB2241278A (en) * 1990-02-23 1991-08-28 Square D Co Securing housings to conduits
DE4302835C1 (de) * 1993-01-27 1994-06-09 Krone Ag Schließeinrichtung für die Tür eines Gehäuses

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783320A (en) * 1972-12-15 1974-01-01 Ite Imperial Corp Clamping means for mechanical securement of enclosures to bus duct
FR2597655B1 (fr) * 1986-04-17 1989-06-02 Telemecanique Electrique Systeme de transmission a cable coaxial
DE9303404U1 (de) * 1992-10-21 1993-04-29 REHAU AG + Co., 95111 Rehau Geräteeinbaudose für Kabelkanäle
DE9301558U1 (de) * 1993-02-04 1993-03-25 Siemens AG, 8000 München Vorrichtung zur lösbaren Befestigung von elektrischen Installationsgeräten

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122603A (en) * 1962-11-21 1964-02-25 Gen Electric Busway plug clamp
US3339038A (en) * 1966-04-14 1967-08-29 Square D Co Bus duct plug
US3657606A (en) * 1971-03-25 1972-04-18 Cutler Hammer Inc Bus duct plug-in unit with improved interlock
GB2241278A (en) * 1990-02-23 1991-08-28 Square D Co Securing housings to conduits
DE4302835C1 (de) * 1993-01-27 1994-06-09 Krone Ag Schließeinrichtung für die Tür eines Gehäuses

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101925281A (zh) * 2009-06-15 2010-12-22 洛克威尔自动控制技术股份有限公司 用于良好附连的集成din轨道附连零件
CN101925281B (zh) * 2009-06-15 2013-09-18 洛克威尔自动控制技术股份有限公司 用于良好附连的集成din轨道附连零件
CN111884159A (zh) * 2020-08-19 2020-11-03 大航有能电气有限公司 一种便于插接箱插脚插入母线槽的压进机构
CN111884159B (zh) * 2020-08-19 2024-05-28 大航有能电气有限公司 一种便于插接箱插脚插入母线槽的压进机构
FR3124031A1 (fr) * 2021-06-14 2022-12-16 Schneider Electric Industries Sas Coffret de dérivation pour jeu de barres
EP4106120A1 (fr) * 2021-06-14 2022-12-21 Schneider Electric Industries SAS Coffret de dérivation pour jeu de barres
WO2023241184A1 (fr) * 2022-06-13 2023-12-21 江苏向荣电气有限公司 Boîte de sélection de barre sous gaine interverrouillée et système de bus intelligent

Also Published As

Publication number Publication date
EP0852840A1 (fr) 1998-07-15
GB2305784B (en) 2000-02-23
GB9519679D0 (en) 1995-11-29
GB2305784A (en) 1997-04-16
AU6997196A (en) 1997-04-17

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