WO2013021307A1 - Electrical connection box with switch - Google Patents
Electrical connection box with switch Download PDFInfo
- Publication number
- WO2013021307A1 WO2013021307A1 PCT/IB2012/053853 IB2012053853W WO2013021307A1 WO 2013021307 A1 WO2013021307 A1 WO 2013021307A1 IB 2012053853 W IB2012053853 W IB 2012053853W WO 2013021307 A1 WO2013021307 A1 WO 2013021307A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrical connection
- connection box
- switch
- side wall
- sidewalls
- Prior art date
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
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
-
- 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
- H01R13/44—Means for preventing access to live contacts
-
- 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
-
- 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
-
- 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
Definitions
- This invention relates to an electrical connection box having a switch for controlling the supply of electrical energy to an item of electrically operated equipment connected by way of the electrical connection box.
- the invention also relates to a conversion kit whereby an existing electrical connection box that does not have a switch associated with it can be converted to one that does have a switch.
- the term standard electrical connection box as used in the specification is intended to mean an electrical connection box that is produced for the purpose of being used on its own independently of the present invention.
- an electrical connection box assembly comprising an electrical connection box having a bottom and sidewalls that define an internal space having a central axis extending in the direction in which the sidewalls extend and openings in the sidewalls or bottom wall or both for receiving electrical cable glands or closure plugs in the alternative; an open top surrounded by free edges of the sidewalls, and a separate housing assembly coaxial with the box and having a generally tubular side wall with a closed outer end and a switch therein that is operable from the closed outer end of the separate housing assembly wherein an inner end of the tubular side wall of the separate housing assembly has a periphery that is releasably sealed to the free edges of the sidewalls of the electrical connection box in the closed condition of the electrical connection box assembly.
- the generally tubular side wall of the separate housing assembly to be a generally tubular extension unit forming an extension to the sidewalls of the electrical connection box; for the separate housing assembly to include a switch supporting unit mounted to an outer end of the tubular side wall of the separate housing assembly; for the tubular side wall and switch supporting unit to be of circular shape in cross-section at least where they are attached to each other at an outer end of the tubular side wall in which instance they are preferably secured to each other utilising a union nut having a thread engaging a cooperating thread on the outer surface of the tubular side wall with a seal interposed between adjacent peripheries of the tubular side wall and switch supporting unit; for the electrical connection box to be a standard electrical connection box; for the switch to be coaxial with the electrical connection box and separate housing assembly; and for the switch operating member to be a generally diametrically extending finger grip whereby the operating member can be rotated about the axis of the assembly.
- Still further features of the first aspect of the invention provide for the outer end of the separate housing assembly to have a removable dust cover thereon that is preferably permanently held captive relative to the separate housing assembly by means of a flexible element that in turn is preferably attached to the centre of the dust cover in the instance that the latter is screw threaded for installation on a cooperating screw thread on the separate housing assembly; and for the switch operating member and separate housing assembly to have formations in registration with each other in the "off" condition of the switch when any dust cover is removed so as to be capable of receiving a removable padlock or the like to prevent unauthorised closing of the switch.
- Yet further features of the first aspect of the invention provide for connectors to be provided either within the electrical connection box or on a mounting plate that is secured to the electrical connection box either internally or in the region of the open top thereof; for the switch supporting unit to be of a explosion proof type embodying a explosion proof switch cover through which an operating shaft of the switch extends axially in close fitting relationship with the switch being enclosed within a suitable explosion proof enclosure; and for a compression type of seal to be provided at an entrance to a explosion proof enclosure of the switch supporting unit for sealing onto individual conductors to be connected to the switch.
- a conversion kit for an existing electrical connection box of the type having a bottom, sidewalls that define an internal space having a central axis extending in the direction in which the sidewalls extend and openings in the sidewalls or bottom wall or both for receiving electrical cable glands or closure plugs in the alternative wherein the electrical connection box has an open top surrounded by free edges of the sidewalls wherein the electrical connection box has a lid for closing the open top
- the conversion kit comprising a separate housing assembly for coaxial mounting on the electrical connection box with its lid removed and wherein the separate housing assembly has a generally tubular side wall with a closed outer end and a switch therein that is operable from the closed outer end of the separate housing assembly with an inner end of the tubular side wall of the housing assembly having a periphery adapted to be sealed to the free edges of the sidewalls of a cooperating electrical connection box in the operative condition of the conversion kit.
- a method of providing a switch in an electrical circuit supplied from a existing standard electrical connection box comprising removing the lid from the existing standard electrical connection box; providing any additional internal electrical connectors; providing a connector kit as defined above; reconnecting an outlet connection by way of the switch forming part of the conversion kit; and installing the conversion kit on the electrical connection box in place of the lid thereof and in sealing relationship relative thereto to form a combined sealed space within the resultant electrical connection box assembly.
- the electrical connection box is of generally circular shape and has a circular lid with a screw thread at or towards its periphery for cooperating with a co- operant screw thread surrounding the open top of the box itself such that the lid may be installed on the box by rotating it about its own axis.
- This arrangement affords enhanced security against unauthorised opening of the electrical connection box that is brought about by shaping the exterior of the lid for engagement by a dedicated or custom tool for rotating the lid.
- the electrical connection box may have a generally rectangular, especially square, lid secured in position using screws at or towards the four corners of the rectangle.
- the electrical connection box generally has the usual lugs for securing it to a mounting surface.
- Figure 1 is an exploded isometric view of one form of standard electrical connection box of a first variety namely one having a circular lid;
- Figure 2 is a sectional elevation of one embodiment of electrical connection box assembly according to the invention.
- Figure 3 is an exploded isometric view of a the electrical connection box illustrated in Figure 2;
- Figure 4 is a view similar to Figure 2 but illustrating more clearly the second aspect of the invention as applied to that embodiment
- Figure 5 is a view similar to Figure 3 but illustrating a variation of the embodiment of the invention illustrated in Figure 3;
- Figure 6 is a side view of a second embodiment of electrical connection box assembly according to the invention which is of an explosion proof category;
- Figure 7 is an enlarged sectional side view thereof
- Figure 8 is an exploded isometric view similar to Figure 3 but showing the electrical connection box illustrated in Figures 6 and 7; and, Figure 9 is an exploded side view of the explosion proof switch supporting unit and its various components.
- a standard electrical connection box (1 ) is of generally circular shape and in the instance that it is an existing installed connection box, it would have a circular lid (2) that is illustrated in Figure 1 .
- the electrical connection box has a screw thread (3) at or towards its periphery for cooperating with a co-operant screw thread on the lid itself such that the lid may be installed on the box by rotating it about its own axis.
- this arrangement affords enhanced security against unauthorised opening of the electrical connection box as by shaping the exterior of the lid with a series of lobes (4) encircling the lid the periphery thereof is made suitable for engagement by a dedicated custom complementarily ring shaped tool (not shown) with diametrically extending handles for rotating the tool and lid.
- the electrical connection box has a bottom (5) from which sidewalls (6) project, in this instance at right angles, to define an internal space that is used to accommodate connectors of any suitable type such as those indicated by numeral (7).
- the upper free edges of the sidewalls define an open top to the internal space.
- the internal space has a central axis indicated by line A-A that extends parallel to the direction in which the sidewalls extend.
- Openings (8) are provided, in this instance in the sidewalls, for receiving electrical cable glands or closure plugs in the alternative (neither of which are illustrated in Figures 2 to 4).
- a separate housing assembly is provided for attachment coaxially to the box (with any lid (2) removed and optionally discarded), the housing assembly having a switch (1 1 ) therein that is operable from a closed outer end of the housing assembly.
- the housing assembly is, in this instance, made up of a generally tubular extension unit (12) forming an extension to the sidewalls of the electrical connection box and a switch supporting unit (13) mounted to an outer end of the extension unit.
- Both the extension unit and the switch supporting unit are of circular shape in cross-section and the extension unit is provided with an internal screw thread cooperating with the external screw thread on the box itself so that it can be screwed onto the box in place of the lid that is illustrated in Figures 1 and 4.
- the extension unit seals onto the upper free edges of the sidewalls by way of a large diameter O-ring (14) in exactly the same manner as the lid may have formerly.
- the extension unit and switch supporting unit are secured to each other utilising a union nut (15) having a thread engaging a cooperating thread on the outer surface of the extension unit, as indicated by numeral (16), with a ring shaped seal (17) interposed between adjacent peripheries of the two units. This arrangement enables conductors to be attached to the switch whilst the connection box assembly is closed without twisting the conductors in any way.
- both the extension unit and the union nut may be provided with a lobes that are substantially identical to those illustrated in Figure 1 on their peripheries so that the same tool can be used to rotate them.
- the switch is coaxial with the electrical connection box and separate housing assembly and has an operating member in the form of a generally diametrically extending finger grip (18) rotatable about the axis of the assembly.
- a removable dust cover (21 ) is provided for the outer end of the switch supporting unit so as to totally enclose the outer end of the switch.
- the dust cover is held captive relative to the supporting unit by means of a flexible element (22) (see Figure 2) that in turn has one end attached in relatively rotatable manner to the inside of the dust cover at its centre and the other end attached to the inside of the switch supporting unit.
- the dust cover may either clip into its operative position or it may have a screw thread for cooperation with a cooperating screw thread on the switch supporting unit.
- the switch operating member and separate housing assembly have formations, typically apertures (23) that are in registration with each other in the "off" condition of the switch, so that a removable padlock or the like can be installed in the apertures in the "off” condition to prevent unauthorised closing of the switch.
- the padlock does not interfere with the dust cover which is inoperative in such an instance whilst remaining attached to the switch supporting unit by means of the flexible element.
- connection box assembly described above can be assembled and sold in the form described, or, alternatively, the separate housing assembly may be sold as a conversion kit for a substantially conventional existing electrical connection box.
- the separate units are clearly illustrated in Figure 4.
- the method of providing a switch in an electrical circuit supplied from an existing electrical connection box simply involves removing the lid from the existing box; providing any additional internal electrical connectors; providing a connector kit as described above and indicated by numeral (9) and reconnecting an outlet connection by way of the switch that forms part of the conversion kit.
- installation of the conversion kit on the electrical connection box would take place by firstly installing the tubular extension unit (12) followed by completing the electrical connections and thereafter closing the conversion kit by installing the switch unit using the union nut.
- the conversion kit plus replaces the lid of the connection box with which it is in sealing relationship to form a combined sealed space within the resultant electrical connection box assembly.
- a row of interconnected lights in an underground mining situation that is connected to a common source of electrical energy and wherein each light has a power take off whereof the connections are contained within a standard electrical connection box, may be provided with individual switches utilising the conversion units provided by this invention.
- Such switches can easily be added in order to provide a separate switching facility for each light so that it can be turned off independently of the others for service or maintenance purposes.
- the remaining lights of an interconnected series thereof can therefore remain illuminated whilst any one of the lights is individually switched off and subjected to maintenance or service, as may be required.
- the standard electrical connection box may have a generally square configuration with the lid, or in this instance the extension unit (25), secured in position using screws at or towards the four corners of the generally square shape of the box that in this instance is formed by four lugs (26) at the corners of the square.
- the extension unit (25) has corresponding lugs (28) that are secured to the lugs of the box using screws in well-known manner.
- the electrical connection box (31 ) is, in this instance, of the type that the sidewalls are inclined to the bottom so that easier access is provided to the interior when the walls are inclined upwards in the installed position.
- electrical connectors (32) are provided on a mounting plate (33) that is in the electrical connection box assembly provided by this invention, releasably secured to the electrical connection box in the region of the open top thereof.
- Openings (34) for receiving one or more cable glands (35) are provided in the operatively lower sidewalls of the electrical connection box.
- the necessary conductors (36) to which the cables are to be connected may pass through the mounting plate for convenience of making connections on both sides thereof.
- a tubular extension unit (37) forms an extension to the sidewalls of the electrical connection box and a switch supporting unit (38) is mounted to an outer end of the extension unit.
- the switch supporting unit is of a explosion proof type and the switch assembly includes a explosion proof switch cover (41 ) through which an operating shaft (42) of the switch (43) extends axially in close fitting relationship.
- the switch is enclosed within a suitable explosion proof enclosure that includes a blind tubular housing (44) receiving a switch housing bush (45) fitted with a closure (46) at the end opposite the switch cover.
- An entrance through the closure has a compression type of seal (47) to the explosion proof enclosure of the switch supporting unit.
- the compression seal has individual holes (48) through it for sealing onto individual conductors that need to pass into the explosion proof enclosure in order to be connected to the switch.
- the switch is fixed within the switch housing bush (45) by means of a ring of bonding compound (49) at the inner end thereof.
- the switch supporting unit is sealed to the outer free end of the tubular extension unit using a sealing ring (51 ) and union nut (52) in the same manner as is described above.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2012293361A AU2012293361B2 (en) | 2011-08-10 | 2012-07-27 | Electrical connection box with switch |
GB1401444.3A GB2507221B (en) | 2011-08-10 | 2012-07-27 | Electrical connection box with switch |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA2011/05825 | 2011-08-10 | ||
ZA201105825 | 2011-08-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013021307A1 true WO2013021307A1 (en) | 2013-02-14 |
Family
ID=47667942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2012/053853 WO2013021307A1 (en) | 2011-08-10 | 2012-07-27 | Electrical connection box with switch |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2012293361B2 (en) |
GB (1) | GB2507221B (en) |
WO (1) | WO2013021307A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113898333A (en) * | 2021-09-30 | 2022-01-07 | 西南石油大学 | Explosion-proof and waterproof wiring device for fluid logging and information transmission |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4924032A (en) * | 1986-07-30 | 1990-05-08 | Akins Charles S | Prewired electrical junction box |
US5627409A (en) * | 1994-03-28 | 1997-05-06 | Yazaki Corporation | Meter module assembly |
US6452097B1 (en) * | 2001-05-25 | 2002-09-17 | Dewall Harold O. | Method and device for installing wallboard over a previously installed junction box |
US20070148993A1 (en) * | 2005-12-28 | 2007-06-28 | Yazaki Corporation | Electric connection box |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1977891A (en) * | 1933-12-15 | 1934-10-23 | Crouse Hinds Co | Explosionproof conduit outlet box and switch unit |
US4803380A (en) * | 1986-03-13 | 1989-02-07 | Lutron Electronics Co., Inc. | Cover and support plate arrangement for wall mounted devices |
GB2457033A (en) * | 2008-01-30 | 2009-08-05 | Graham Andrew Bath | Electrical cable connector plate |
GB0821666D0 (en) * | 2008-11-27 | 2008-12-31 | Brook Richard D | Safety shield apparatus |
GB2469223B (en) * | 2010-06-25 | 2011-06-08 | Javid Nourie | Push-fit electrical fittings |
-
2012
- 2012-07-27 AU AU2012293361A patent/AU2012293361B2/en active Active
- 2012-07-27 WO PCT/IB2012/053853 patent/WO2013021307A1/en active Application Filing
- 2012-07-27 GB GB1401444.3A patent/GB2507221B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4924032A (en) * | 1986-07-30 | 1990-05-08 | Akins Charles S | Prewired electrical junction box |
US5627409A (en) * | 1994-03-28 | 1997-05-06 | Yazaki Corporation | Meter module assembly |
US6452097B1 (en) * | 2001-05-25 | 2002-09-17 | Dewall Harold O. | Method and device for installing wallboard over a previously installed junction box |
US20070148993A1 (en) * | 2005-12-28 | 2007-06-28 | Yazaki Corporation | Electric connection box |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113898333A (en) * | 2021-09-30 | 2022-01-07 | 西南石油大学 | Explosion-proof and waterproof wiring device for fluid logging and information transmission |
Also Published As
Publication number | Publication date |
---|---|
GB2507221B (en) | 2017-07-26 |
GB201401444D0 (en) | 2014-03-12 |
AU2012293361A1 (en) | 2014-02-20 |
GB2507221A (en) | 2014-04-23 |
AU2012293361B2 (en) | 2016-09-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10618783B2 (en) | Winch | |
US7370988B2 (en) | In-grade light fixture housing and hydrological barrier plate for use therein | |
US6742748B1 (en) | Deck post | |
US6007353A (en) | Electrical connector enclosure | |
CA2965421A1 (en) | Electrical junction with wireless controller | |
WO2013125862A1 (en) | Passive underground container system for electric equipment | |
CA2722389A1 (en) | Inlet cover and adapter assembly for electrical components | |
US2240922A (en) | Explosionproof switch housing | |
EP2780994B1 (en) | Electrical socket apparatus | |
EP3815206B1 (en) | Kit of parts comprising a cable gland, a wire transport element and a housing, system made of such a kit, and method for functionally connecting the system | |
AU2012293361B2 (en) | Electrical connection box with switch | |
US6227499B1 (en) | Rough-in mounting bracket for CEBUS tap point unit | |
WO2015061191A1 (en) | Integrated electrical assembly for housing modular units and related components thereof | |
CN204885872U (en) | Enclosed switch cabinet temperature -detecting device | |
US3578932A (en) | Reversibly mountable limit switch construction | |
US6700620B1 (en) | Surveillance camera housing with mounting means | |
CN212486653U (en) | Video monitoring subassembly and electrical equipment | |
CN204290101U (en) | A kind of explosion-proof electrical distribution box | |
CN205642414U (en) | Multi -functional flameproof enclosure of industry thing networking | |
CN203911274U (en) | Explosion-proof lighting control box | |
CN205583260U (en) | Quick explosion -proof operation post of plug -in type | |
CN207408457U (en) | A kind of indoor ammeter box | |
CN102853402B (en) | Multifunctional lamp casing structure and lamp using same | |
CN207213718U (en) | Double-deck shield explosion-proof signal lamp | |
CN104393441A (en) | Mobile explosion-proof socket box |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12821783 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 1401444 Country of ref document: GB Kind code of ref document: A Free format text: PCT FILING DATE = 20120727 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1401444.3 Country of ref document: GB |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2012293361 Country of ref document: AU Date of ref document: 20120727 Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 12821783 Country of ref document: EP Kind code of ref document: A1 |