CA1148645A - Electrical wiring box arrangement - Google Patents
Electrical wiring box arrangementInfo
- Publication number
- CA1148645A CA1148645A CA000376254A CA376254A CA1148645A CA 1148645 A CA1148645 A CA 1148645A CA 000376254 A CA000376254 A CA 000376254A CA 376254 A CA376254 A CA 376254A CA 1148645 A CA1148645 A CA 1148645A
- Authority
- CA
- Canada
- Prior art keywords
- wiring box
- leg portion
- bracket
- flange
- flange portion
- 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.)
- Expired
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
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/12—Distribution boxes; Connection or junction boxes for flush mounting
- H02G3/123—Distribution boxes; Connection or junction boxes for flush mounting in thin walls
- H02G3/125—Distribution boxes; Connection or junction boxes for flush mounting in thin walls with supporting bar extending between two separate studs of a wall frame
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Connection Or Junction Boxes (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An electrical wiring box arrangement particularly adapted for mounting on a metal support structure such as a U-shaped or I-shaped metal dry-wall stud includes an L-shaped mounting bracket with deformable leg portions and a wiring box. The wall structure of the box is provided with attachment tabs and the bracket with a number of correspondingly positioned tab-receiving openings which permit flush mounting of the wiring box arrangement with a variety of thicknesses of dry-wall panel.
The legs of the mounting bracket are easily deformed by hand around the flanges of the metal stud permitting the mounting of the wiring box arrangement to either side of the stud and to metal studs of a variety of depths.
An electrical wiring box arrangement particularly adapted for mounting on a metal support structure such as a U-shaped or I-shaped metal dry-wall stud includes an L-shaped mounting bracket with deformable leg portions and a wiring box. The wall structure of the box is provided with attachment tabs and the bracket with a number of correspondingly positioned tab-receiving openings which permit flush mounting of the wiring box arrangement with a variety of thicknesses of dry-wall panel.
The legs of the mounting bracket are easily deformed by hand around the flanges of the metal stud permitting the mounting of the wiring box arrangement to either side of the stud and to metal studs of a variety of depths.
Description
1)-23203 -1-ELECTRICAL WIRING BOX ARRA~GE,.~IE:~T
This invention relaLes to electrical wirin~ boxes and brackets for mountin~ to supporting structures. More particularly~ it i5 concerned with electrical wirins box and bracket arrangements for mountin~ to metal studdin~.
A numb~r of mounting brackets of different design fox.
mounting electrical wiring boxes to supporting structures such as metal studs a.re well-known to those skilled i.n the art. E,y way of exampl~, mou~ting brackets have be2n ~0 uti].i~ed or descriked in the prior art which vari.ously include featues such as clips for secureLy gx~ppirlg the edyes or flan~es oE metal studs ~for example, U-shaped or C-shaped studs~; teeth, prollgs or ~arb~ for b.iting into flang~ portions or interior po.rtions of meial s-tuds;
resilient snap-on ~ripping members or slotte~ membe.rs arranged ~or attachment to interior portion~, edCJ~S or f1an~es of m~tal studs; tabs arrange~ t~ be bent around ed~es ~r flan~es or studs and to be secured thereto;
spring-loaded ~m~ers capable of being flexed by hand to ~Q permit their insertion into the interior of studs; and members arranged to ~e secured to stud~. by fasteni~g devices such as self~tapping metal screws and nut--and-bolt arrangem2nts.
Man~ of the brackets o. the prior art avoid the ne3d ~or-install~tion tools, even sir~.ple and comrnonplace to~:!s ~uch as pliers and screwdrive~s, and some o:E the bracke~s are adj~stable, or r~ova~le h~ :na~d once mounted -to ~t~2cls.
W~lile the ?ri.or art mountil?~ brackets havin~, the a~o~e-~escri~ed featu~es appeax LO O' fer reasolllble so.~utions to the prohlem of rncunti na wir:ir~g boxes t.o met~l st.l~s, th~'~' nonet~le'.~ss ~ave c--rt.ai.~l clra-~bac;~s and disa~v.tnt~es ;:l~e:l ~lnploy~l in solr.e app:l.ications. l~l~rii~
~' of the ?~rac kets, for ex~mple, are very complex j.n des L~t; ,.
- . - . - . . - - ~ :
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:
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-232~, -2-difficult to install, require close manufacturing toler-ances ana are dificult to manufacture at low cost, particularly if the brackets have rnultiple parks or numerous bends or intricate shapes and require special S treating such as welding or heat-treating.
Certain of the brackets ar~e usable with studs of only a single depth and many of the brackets cannot be used on either side of a stud or with studs of an I-shaped cross-section. Further, the avoidance of installation tools in several instances is accomplishea at the expense of complexity and intricacy of aesign without significant reduction, if at all, of the labor and cost expended in the installation process.
Moreover, many of the prior art brackets at~ach to the wiring box at one position only so that when the assembly is mounted to a metal stud, the open face of the wiring box projects forward of the stud by a single, fixed predetermined distance. The result is that ihe bracket positions the open box face to be flush wi~h only one standard thickness of wallboard attached to the stud in subsequent steps of construction.
Accordingly, the present invention provides an electrical wiring box arrangement for mounting on a ~etal supporting structure of the type having substantially parallel first and second flange portions and a web portion disposed therebetween, said flange portions each having first and second corner regions, the wiring box arrangement comprising: an electrical wiring box having front-to-rear walls and a rear wall thexebetween defining a chamber with a fo~lard opening adapted to receive a wiriny aevic~; and a mounting bracket for attachment to said wiring box and for mounting to said metal supporting structure, said mounting bracket having first and second deformable leg portions disposed to form a substantially right angle with one another; said leg portion having a - -plurality of sets of spaced apart openings adapted to coactwith attachment means disposed in said front-to-rear wall structure of said wiring boY~ to said mounting bracke-t with the plane of said forward opening of said box spaced apart and projecting forward of the plane of said second leg portion of said mounting bracket; said second leg portion adapted to be positionecl against said first flange portion of said metal supporting structure between said first and second corner regions thereof in preparation for mounting said bracket to the supporting structure, said second leg portion arranged initially to extend past said first corner region of said first flange portion of said metal supporting structure and, when ~eformed, to conform generally to the configuration of sand embrace said first corner region of said first flange portion;
said first leg portion adapted to be positioned against said second corner region of said first flange portion and against said second corner region of said second flange portion, said first leg portion thus positioned to lie between said first and said second flange portions sub-stnatially parallel with said web portion, said first leg portion arranged initially to extend past said second corner region of said second flange portion of said metal supporting structure and, ~Jhen deformed, to conform generally to the configuration of said second corner region of said second flange portion, the balance of the length of said f.rst leg poxtion of said mounting bracket thus being positioned against said second flange portion of said supporting structure between said first and .said 30 second corner regions thereof, the balance of said first leg portion arranged initially to extend past said first corner region cf said secord flange portion and, when deformed, to confo.rm generally to the configuration of and embrace said first corner region of said second flange portion of said supporting structure; ~7hereby saia wiring ~ .
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:: :
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' ~-23203 -~-box arra~gement is caused to be firmly mounted to said supportiny structure with the plane of said forward opening of said wiring box projecting and spaced apart from the plane of said first flange portion of said supporting structure.
One embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings~ in which:
FIGURE 1 is an exploded perspective view of an electrical wiring box arrangement in accordance with the invention.
FIGURE 2 is a partially out-away perspective view of the electrical wiring box arrangement of Figure 1 showing attachment of the wiring box to -the bracke~.
FIGURE 3 is a perspective view of the bracket of the electrical wiring box arrangement of Figure 1.
FIGURES 4 and 5 illustrate, in perspective, attachment of the wiring box arrangement of Figure 1 to a me.al support structure of U-shaped cross-section.
FIGURE 6 illustrates, in perspective, attachment of the wiring box arrangement of Figure 1 to a metal ~5 support structuxe of I-shaped cross-section.
For a better understanding of the present invention, together with other and further objects, advantages and capabilities thereof, reference is made to the following disclosure and claims in connection with the above-described drawings.
l~n eiectrical wiring box arrangement in accordance with the invention is shown in Figures 1 3. The arrange-ment 10 includes a generally L-shaped bracket 12 and a wiring box 14.
The electrical wiring box 14 includes front-to-rear walls 30, 32, 34, and 36 with rear wall 38 which, together, ~- form a chamber within tne box with a forward opening 40 .:
~-23203 -5-for receiving an electrical wiring device such 2S a switchor plug receptacle ~not shown) to be mounted to tabs 42 and 44.
The mountin~ brack2t 12 comprises two deformable le~
portions 16 and 18 which meet to form a substantially right angle at vertex 20. The .~irst leg porti.on 16, forming the longer of the two .leg port.ions includes a number of tab-receiving openings 22 at.the end of.the leg portion 16 nearest the ver~ex 20. As indicated in the exploded view o~ Figure 1, the tab-.receiving open-ings 22 of bracket leg porti~n 16 are adapted t.o ~-eceive attachment tabs 24, 26, and 28 in a front-to-rear wall 30 of wiri.ng box 14.
As can best be seen by referring to Figure 3, in a preferred embodiment, thè tab receiving openings 2~ are arranged in sets or triads of triangular arrangemen~s of slots. Slotted openinys 22a, 22b and 22c form one such set of ~r~angularly arranged openings, openings 22d, 22e, and 22f form a second set o~ trian~ularly arransed tab-receiving openings and openinys 22~, 22h and 22i form a third such set.
Re~erring agai.n to Figure 1, it can be seen that eacn triangularly arranged triad of tab-receiving openi.ngs 22 in bracket leg portion 16 is arranged to correspond to the positioning of attachment tabs 24, 26, and 2~ in the wall 30 of wiring box 14 The two tabs 26 and 28 nearest the front opening 40 of the wixing bo~ 14 are shown formed in an L-shaped configuration, while the third tab 24 of the set is initially substantially perpend~cular 3Q to bo~: wall 30.
The two tab-receiving openings adapted to receive tabs 26 and 28 are generally laryer than 'che openin~
adapted to receive tab 24, permitting the box wall tabs to easi.ly pass through the tab-receiving openings. The box i5 thus ~sily attached to the brac}~et as can bes~
be seen by reerring to Figure 2. The b.racket 12 .is : ' ~ ' - ' ' . ' -:
placed against box wall 30, aligning tabs 26 and 28 with the two larger tab-receiving openings of a -triad, for example openin~s 22g and 22h of the bracket 12. The bracket is then slideably moved in a direction toward t:~
front opening 40 of the box which causes the third ta'~-receiving opening of the triad, for example opening 26i, to become aligned with tab 24 ~f the box wall 30. The tab 24 is inserted in the opening 22i and bent over to securely attach the box to the bracket.
As can readily be seen in Figure 2, the box 14 can be similarly attached to bracket I2 by employing any of the sets of triangularly disposed sets of tab-xe~eiv.ing openings. ~hile any number of such sets of openings --can be provided in bracket 12, in a preferred em~odi.rnent -15 of the invention, three sets of openings are provided to accon~odate the three standard thicknesses of dry-wall paneling commonly employed in buildin~ construction:
3/8 inch, 1/2 inch, and 5/g inch. That is, tabs 24~ 26, and 2~ of the box ~all 30 and tab~recei~ring openings 22gr
This invention relaLes to electrical wirin~ boxes and brackets for mountin~ to supporting structures. More particularly~ it i5 concerned with electrical wirins box and bracket arrangements for mountin~ to metal studdin~.
A numb~r of mounting brackets of different design fox.
mounting electrical wiring boxes to supporting structures such as metal studs a.re well-known to those skilled i.n the art. E,y way of exampl~, mou~ting brackets have be2n ~0 uti].i~ed or descriked in the prior art which vari.ously include featues such as clips for secureLy gx~ppirlg the edyes or flan~es oE metal studs ~for example, U-shaped or C-shaped studs~; teeth, prollgs or ~arb~ for b.iting into flang~ portions or interior po.rtions of meial s-tuds;
resilient snap-on ~ripping members or slotte~ membe.rs arranged ~or attachment to interior portion~, edCJ~S or f1an~es of m~tal studs; tabs arrange~ t~ be bent around ed~es ~r flan~es or studs and to be secured thereto;
spring-loaded ~m~ers capable of being flexed by hand to ~Q permit their insertion into the interior of studs; and members arranged to ~e secured to stud~. by fasteni~g devices such as self~tapping metal screws and nut--and-bolt arrangem2nts.
Man~ of the brackets o. the prior art avoid the ne3d ~or-install~tion tools, even sir~.ple and comrnonplace to~:!s ~uch as pliers and screwdrive~s, and some o:E the bracke~s are adj~stable, or r~ova~le h~ :na~d once mounted -to ~t~2cls.
W~lile the ?ri.or art mountil?~ brackets havin~, the a~o~e-~escri~ed featu~es appeax LO O' fer reasolllble so.~utions to the prohlem of rncunti na wir:ir~g boxes t.o met~l st.l~s, th~'~' nonet~le'.~ss ~ave c--rt.ai.~l clra-~bac;~s and disa~v.tnt~es ;:l~e:l ~lnploy~l in solr.e app:l.ications. l~l~rii~
~' of the ?~rac kets, for ex~mple, are very complex j.n des L~t; ,.
- . - . - . . - - ~ :
.
:
.
-232~, -2-difficult to install, require close manufacturing toler-ances ana are dificult to manufacture at low cost, particularly if the brackets have rnultiple parks or numerous bends or intricate shapes and require special S treating such as welding or heat-treating.
Certain of the brackets ar~e usable with studs of only a single depth and many of the brackets cannot be used on either side of a stud or with studs of an I-shaped cross-section. Further, the avoidance of installation tools in several instances is accomplishea at the expense of complexity and intricacy of aesign without significant reduction, if at all, of the labor and cost expended in the installation process.
Moreover, many of the prior art brackets at~ach to the wiring box at one position only so that when the assembly is mounted to a metal stud, the open face of the wiring box projects forward of the stud by a single, fixed predetermined distance. The result is that ihe bracket positions the open box face to be flush wi~h only one standard thickness of wallboard attached to the stud in subsequent steps of construction.
Accordingly, the present invention provides an electrical wiring box arrangement for mounting on a ~etal supporting structure of the type having substantially parallel first and second flange portions and a web portion disposed therebetween, said flange portions each having first and second corner regions, the wiring box arrangement comprising: an electrical wiring box having front-to-rear walls and a rear wall thexebetween defining a chamber with a fo~lard opening adapted to receive a wiriny aevic~; and a mounting bracket for attachment to said wiring box and for mounting to said metal supporting structure, said mounting bracket having first and second deformable leg portions disposed to form a substantially right angle with one another; said leg portion having a - -plurality of sets of spaced apart openings adapted to coactwith attachment means disposed in said front-to-rear wall structure of said wiring boY~ to said mounting bracke-t with the plane of said forward opening of said box spaced apart and projecting forward of the plane of said second leg portion of said mounting bracket; said second leg portion adapted to be positionecl against said first flange portion of said metal supporting structure between said first and second corner regions thereof in preparation for mounting said bracket to the supporting structure, said second leg portion arranged initially to extend past said first corner region of said first flange portion of said metal supporting structure and, when ~eformed, to conform generally to the configuration of sand embrace said first corner region of said first flange portion;
said first leg portion adapted to be positioned against said second corner region of said first flange portion and against said second corner region of said second flange portion, said first leg portion thus positioned to lie between said first and said second flange portions sub-stnatially parallel with said web portion, said first leg portion arranged initially to extend past said second corner region of said second flange portion of said metal supporting structure and, ~Jhen deformed, to conform generally to the configuration of said second corner region of said second flange portion, the balance of the length of said f.rst leg poxtion of said mounting bracket thus being positioned against said second flange portion of said supporting structure between said first and .said 30 second corner regions thereof, the balance of said first leg portion arranged initially to extend past said first corner region cf said secord flange portion and, when deformed, to confo.rm generally to the configuration of and embrace said first corner region of said second flange portion of said supporting structure; ~7hereby saia wiring ~ .
.
:: :
.
' ~-23203 -~-box arra~gement is caused to be firmly mounted to said supportiny structure with the plane of said forward opening of said wiring box projecting and spaced apart from the plane of said first flange portion of said supporting structure.
One embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings~ in which:
FIGURE 1 is an exploded perspective view of an electrical wiring box arrangement in accordance with the invention.
FIGURE 2 is a partially out-away perspective view of the electrical wiring box arrangement of Figure 1 showing attachment of the wiring box to -the bracke~.
FIGURE 3 is a perspective view of the bracket of the electrical wiring box arrangement of Figure 1.
FIGURES 4 and 5 illustrate, in perspective, attachment of the wiring box arrangement of Figure 1 to a me.al support structure of U-shaped cross-section.
FIGURE 6 illustrates, in perspective, attachment of the wiring box arrangement of Figure 1 to a metal ~5 support structuxe of I-shaped cross-section.
For a better understanding of the present invention, together with other and further objects, advantages and capabilities thereof, reference is made to the following disclosure and claims in connection with the above-described drawings.
l~n eiectrical wiring box arrangement in accordance with the invention is shown in Figures 1 3. The arrange-ment 10 includes a generally L-shaped bracket 12 and a wiring box 14.
The electrical wiring box 14 includes front-to-rear walls 30, 32, 34, and 36 with rear wall 38 which, together, ~- form a chamber within tne box with a forward opening 40 .:
~-23203 -5-for receiving an electrical wiring device such 2S a switchor plug receptacle ~not shown) to be mounted to tabs 42 and 44.
The mountin~ brack2t 12 comprises two deformable le~
portions 16 and 18 which meet to form a substantially right angle at vertex 20. The .~irst leg porti.on 16, forming the longer of the two .leg port.ions includes a number of tab-receiving openings 22 at.the end of.the leg portion 16 nearest the ver~ex 20. As indicated in the exploded view o~ Figure 1, the tab-.receiving open-ings 22 of bracket leg porti~n 16 are adapted t.o ~-eceive attachment tabs 24, 26, and 28 in a front-to-rear wall 30 of wiri.ng box 14.
As can best be seen by referring to Figure 3, in a preferred embodiment, thè tab receiving openings 2~ are arranged in sets or triads of triangular arrangemen~s of slots. Slotted openinys 22a, 22b and 22c form one such set of ~r~angularly arranged openings, openings 22d, 22e, and 22f form a second set o~ trian~ularly arransed tab-receiving openings and openinys 22~, 22h and 22i form a third such set.
Re~erring agai.n to Figure 1, it can be seen that eacn triangularly arranged triad of tab-receiving openi.ngs 22 in bracket leg portion 16 is arranged to correspond to the positioning of attachment tabs 24, 26, and 2~ in the wall 30 of wiring box 14 The two tabs 26 and 28 nearest the front opening 40 of the wixing bo~ 14 are shown formed in an L-shaped configuration, while the third tab 24 of the set is initially substantially perpend~cular 3Q to bo~: wall 30.
The two tab-receiving openings adapted to receive tabs 26 and 28 are generally laryer than 'che openin~
adapted to receive tab 24, permitting the box wall tabs to easi.ly pass through the tab-receiving openings. The box i5 thus ~sily attached to the brac}~et as can bes~
be seen by reerring to Figure 2. The b.racket 12 .is : ' ~ ' - ' ' . ' -:
placed against box wall 30, aligning tabs 26 and 28 with the two larger tab-receiving openings of a -triad, for example openin~s 22g and 22h of the bracket 12. The bracket is then slideably moved in a direction toward t:~
front opening 40 of the box which causes the third ta'~-receiving opening of the triad, for example opening 26i, to become aligned with tab 24 ~f the box wall 30. The tab 24 is inserted in the opening 22i and bent over to securely attach the box to the bracket.
As can readily be seen in Figure 2, the box 14 can be similarly attached to bracket I2 by employing any of the sets of triangularly disposed sets of tab-xe~eiv.ing openings. ~hile any number of such sets of openings --can be provided in bracket 12, in a preferred em~odi.rnent -15 of the invention, three sets of openings are provided to accon~odate the three standard thicknesses of dry-wall paneling commonly employed in buildin~ construction:
3/8 inch, 1/2 inch, and 5/g inch. That is, tabs 24~ 26, and 2~ of the box ~all 30 and tab~recei~ring openings 22gr
2~ 22h and 22i of the bracket are so positioned that w~en the box 14 is attachea to the bracket 12, the plane of the folward opening 40 of the box projects forward of the plane of bracket leg portion 18 by about 3/8 inch. In this configuration, the wiring box and mounting ~racket arrangem~nt can be conveniently employed in construction applications where 3/8 inch dry-wall panel is used. In - such applications, when the arrangement is mounted to a dry-wall stud as detailed belvw, the plane o the forward opening 40 of the wiring box will be substantially flush 3n with Lhe f.inished face of the dry-~all panel.
Re~erring ~o Fi~ure 3, the triad of tab-receiving openings 22d, 22e and 22f and the triad of openin~s 22a, 22b, and 22c are correspondingly positioned to allow :Eor attaching the box to the bracket wi.th l/2 inch and 5/8 inch spacing, respectively, between the plane of - the fo.rward openin~ 40 of the box and the plane of : . ' . ' :
~, ' D-23203 _7_ brac~et leg purtion 18.
The wirin~ box arran~ement of the present invention is particularly ad~pted for mounting on me~al suppoxting - structures of the.types having two substantially parallel flanges with a web connecting the two flanges. Examples include metal studs of C-shaped or U-shaped cross-section - -where the web is disposed between the two flanges, con-necting the coxner edge of one flange to the corresponding corner edge of the other flange, or metal stud of I-shape~ cross-section where the web is centrally dis-posed between the -cwo flanges.
The bracket and attached wiring box axe conveniently and easily mounted- to such metal stuclding as depieted in Figures 4-6. Referring to ~igure 4, the wiring box assembly 51 is placed against the U-shaped stud 50 with the vertex 20 of.the bracket 12 placed firmly against the second corner 46 of the first flange 53 of the - stud 50. In this position the bracket 12 is posi-tioned in preparation to mounting on the stud so that the second leg portion 18 of the bracket 12 lies against the first flange 53 oE the stud between the first corner.48 and the second cor~er 46 of the flange 53. The second le~
portion 18 of the bracket is constructed about 2 inches to about 3 inches in length so that when so positioned, it initially extends beyoncl the first corner 48 of the first flange 53 of the stud 50.
Referring to Figure 5 it can be seen that deformation of the first leg portion 18 of -the brac~et causes it to conform to ancl c3rip or engage the first corner 48 of the flange 53.
Referring again to Figure `4, placement of the wiring box assembly against the stud in preparation to mounting it on the stud causes the first leg por-tion 16 of the bracket to lie between the secorld corner 46 of the first-flanJe ~3 and the second corner 56 of the second flanc3e 54, substantially par~llel -to ~eb 52. In th.is initial position, the first leg portion 16 of the bracket ext~nds beyond the second corner 56 of the second flange 54.
Deformation of leg portion 16 of the bracket causes the leg port.ion -to conform to the second corner 56 of the.
second flanye 54 and to lie along the second flange 54 bet~een the first corner 58 and the second corner 56 as - -- depicted by the dashed lines and numeral 16a. In this position, the balance of the leg portion, depicted as 16a .
in Figure 4, extends be~ond the-first corner 58 of the second flange 54.
The first-leg portion 16 of the bracket is constructed about 5-1/2 inches to about 6-1/2 inches in length to accommodate the standard depths of metal dry-wall'studding commonly employed in huilding constrùction 1-5~8 inches, 2-1/2 inches, and 3-5/8 inches. If the first leg por-t'ion 16 of the bracket is about 6 inche~ in length, it is long enough to be used with the largest of standard dry-.- wall studding, that of 3-5f8 inches depth.
ReferrincJ to Figure 5, the balance 15a of bracket leg portion 16 which initially extended beyond first - corner 58 of the second flange 54, when deformed, con-forms to and grips or en~ages corner 58. When used w].th-studding of 1-5/8 inch or 2-1/2 inch depth,.the excess len~th of the first leg portion 16 of the bracket is folded inside the stud.
~ igure 6 depicts the use of the wiring box arrangement' with metal support structure having an I-shaped cross-sec~ion. The second leg portion 18 of bracket 12 en~ages the first flan~e 62 and the first leg portion 1~ of the ~0 bracket engages secon* flange 64. The wiring box assembl~
- is -thus firmly attached -to -the support structur2 not~ith-standing the fact that the bulk of first leg portion 16 spans the open gap bett~een second corner 68 of the first flange 62 and second corner 70 of the second flange 6fi.
In a pre erred embodim~nt of the in~ren-tion, ~he bracket is fa'bricated of a l.ight gause metal such as -~ :
.
..
. . .
22 gauge steel or t.he like. This permits the leg por-tions of the bracket to be easily deformed by hand, in turn permit-ting the wiring box'arran~ement to be mounted to a metal struc:ture by hand without the n'eed for tools.
As shown in Figure 5, the second leg portion 18 of the bracket is provided with fastener-receiving holes 72 to receive a screw 74, rivet, bolt or like fastener to ' provide optional additional means for securing the ~racket to the support structure.
-. 10 The present invention thus provides an electrical wiring box arrangement of simple design which can be easil~y and inexpensively manufactured with a minimum of steps. The wiring box arrangement can be conveniently and quickly mounted to a metal support structure such as a metal stud by hand without the need for any tools~
- The arrangement permits the niounting of a wiring box acr~ss the open channel face of an I-shaped stud.
The wiring box arrangemen-t of this invention can be . used with a variety of depths of metal studding~ It also permits flush mounting of electrical wirin~ boxes with a variety of thicXnesses of dry-wall panel.
While there has been shown and described what is at present consi.dered the preferred embodiment of the inven-.
tion, it will. be. obvious to those skilled in the art that var,ious chanyes and modifications may be made therein without departing.from t.he scope of the invention as defined by the appended claims.
.
Re~erring ~o Fi~ure 3, the triad of tab-receiving openings 22d, 22e and 22f and the triad of openin~s 22a, 22b, and 22c are correspondingly positioned to allow :Eor attaching the box to the bracket wi.th l/2 inch and 5/8 inch spacing, respectively, between the plane of - the fo.rward openin~ 40 of the box and the plane of : . ' . ' :
~, ' D-23203 _7_ brac~et leg purtion 18.
The wirin~ box arran~ement of the present invention is particularly ad~pted for mounting on me~al suppoxting - structures of the.types having two substantially parallel flanges with a web connecting the two flanges. Examples include metal studs of C-shaped or U-shaped cross-section - -where the web is disposed between the two flanges, con-necting the coxner edge of one flange to the corresponding corner edge of the other flange, or metal stud of I-shape~ cross-section where the web is centrally dis-posed between the -cwo flanges.
The bracket and attached wiring box axe conveniently and easily mounted- to such metal stuclding as depieted in Figures 4-6. Referring to ~igure 4, the wiring box assembly 51 is placed against the U-shaped stud 50 with the vertex 20 of.the bracket 12 placed firmly against the second corner 46 of the first flange 53 of the - stud 50. In this position the bracket 12 is posi-tioned in preparation to mounting on the stud so that the second leg portion 18 of the bracket 12 lies against the first flange 53 oE the stud between the first corner.48 and the second cor~er 46 of the flange 53. The second le~
portion 18 of the bracket is constructed about 2 inches to about 3 inches in length so that when so positioned, it initially extends beyoncl the first corner 48 of the first flange 53 of the stud 50.
Referring to Figure 5 it can be seen that deformation of the first leg portion 18 of -the brac~et causes it to conform to ancl c3rip or engage the first corner 48 of the flange 53.
Referring again to Figure `4, placement of the wiring box assembly against the stud in preparation to mounting it on the stud causes the first leg por-tion 16 of the bracket to lie between the secorld corner 46 of the first-flanJe ~3 and the second corner 56 of the second flanc3e 54, substantially par~llel -to ~eb 52. In th.is initial position, the first leg portion 16 of the bracket ext~nds beyond the second corner 56 of the second flange 54.
Deformation of leg portion 16 of the bracket causes the leg port.ion -to conform to the second corner 56 of the.
second flanye 54 and to lie along the second flange 54 bet~een the first corner 58 and the second corner 56 as - -- depicted by the dashed lines and numeral 16a. In this position, the balance of the leg portion, depicted as 16a .
in Figure 4, extends be~ond the-first corner 58 of the second flange 54.
The first-leg portion 16 of the bracket is constructed about 5-1/2 inches to about 6-1/2 inches in length to accommodate the standard depths of metal dry-wall'studding commonly employed in huilding constrùction 1-5~8 inches, 2-1/2 inches, and 3-5/8 inches. If the first leg por-t'ion 16 of the bracket is about 6 inche~ in length, it is long enough to be used with the largest of standard dry-.- wall studding, that of 3-5f8 inches depth.
ReferrincJ to Figure 5, the balance 15a of bracket leg portion 16 which initially extended beyond first - corner 58 of the second flange 54, when deformed, con-forms to and grips or en~ages corner 58. When used w].th-studding of 1-5/8 inch or 2-1/2 inch depth,.the excess len~th of the first leg portion 16 of the bracket is folded inside the stud.
~ igure 6 depicts the use of the wiring box arrangement' with metal support structure having an I-shaped cross-sec~ion. The second leg portion 18 of bracket 12 en~ages the first flan~e 62 and the first leg portion 1~ of the ~0 bracket engages secon* flange 64. The wiring box assembl~
- is -thus firmly attached -to -the support structur2 not~ith-standing the fact that the bulk of first leg portion 16 spans the open gap bett~een second corner 68 of the first flange 62 and second corner 70 of the second flange 6fi.
In a pre erred embodim~nt of the in~ren-tion, ~he bracket is fa'bricated of a l.ight gause metal such as -~ :
.
..
. . .
22 gauge steel or t.he like. This permits the leg por-tions of the bracket to be easily deformed by hand, in turn permit-ting the wiring box'arran~ement to be mounted to a metal struc:ture by hand without the n'eed for tools.
As shown in Figure 5, the second leg portion 18 of the bracket is provided with fastener-receiving holes 72 to receive a screw 74, rivet, bolt or like fastener to ' provide optional additional means for securing the ~racket to the support structure.
-. 10 The present invention thus provides an electrical wiring box arrangement of simple design which can be easil~y and inexpensively manufactured with a minimum of steps. The wiring box arrangement can be conveniently and quickly mounted to a metal support structure such as a metal stud by hand without the need for any tools~
- The arrangement permits the niounting of a wiring box acr~ss the open channel face of an I-shaped stud.
The wiring box arrangemen-t of this invention can be . used with a variety of depths of metal studding~ It also permits flush mounting of electrical wirin~ boxes with a variety of thicXnesses of dry-wall panel.
While there has been shown and described what is at present consi.dered the preferred embodiment of the inven-.
tion, it will. be. obvious to those skilled in the art that var,ious chanyes and modifications may be made therein without departing.from t.he scope of the invention as defined by the appended claims.
.
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED IS DEFINED AS FOLLOWS:
1. An electrical wiring box arrangement for mounting on a metal supporting structure of the type having substantially parallel first and second flange portions and a web portion disposed therebetween, said flange portions each having first and second corner regions, the wiring box arrangement comprising:
an electrical wiring box having front-to-rear walls and a rear wall therebetween defining a chamber with a forward opening adapted to receive a wiring device; and a mounting bracket for attachment to said wiring box.
and for mounting to said metal supporting structure, said mounting bracket having first and second deformable leg portions disposed to form a substantially right angle with one another;
said first leg portion having a plurality of sets of spaced apart, openings adapted to coact with attachment means disposed in said front-to-rear wall structure of said wiring box to said mounting bracket with the plane of said forward opening of said box spaced apart and projecting forward of the plane of said second leg portion of said mounting bracket;
said second leg portion adapted to be positioned against said first flange portion of said metal sup-porting structure between said first and second corner regions thereof in preparation for mounting said bracket to the supporting structure, said second leg portion arranged initially to extend past said first corner region of said first flange portion of said metal sup-porting structure and, when deformed, to conform generally to the configuration of and embrace said first corner region of said first flange portion;
said first leg portion adapted to be positioned against said second corner region of said first flange portion and against said second corner region of said second flange portion, said first leg portion thus posi-tioned to lie between said first and said second flange portions substantially parallel with said web portion, said first leg portion arranged initially to extend past said second corner region of said second flange portion of said metal supporting structure and, when deformed, to conform generally to the configuration of said second corner region of said second flange portion;
the balance of the length of said first leg portion of said mounting bracket thus being positioned against said second flange portion of said supporting structure between said first and said second corner regions thereof, the balance of said first leg portion arranged initially to extend past said first corner region of said second flange portion and, when deformed, to conform generally to the configuration of and embrace said first corner region of said second flange portion of said supporting structure;
whereby said wiring box arrangement is caused to be firmly mounted to said supporting structure with the plane of said forward opening of said wiring box projecting and spaced apart from the plane of said first flange portion of said supporting structure.
an electrical wiring box having front-to-rear walls and a rear wall therebetween defining a chamber with a forward opening adapted to receive a wiring device; and a mounting bracket for attachment to said wiring box.
and for mounting to said metal supporting structure, said mounting bracket having first and second deformable leg portions disposed to form a substantially right angle with one another;
said first leg portion having a plurality of sets of spaced apart, openings adapted to coact with attachment means disposed in said front-to-rear wall structure of said wiring box to said mounting bracket with the plane of said forward opening of said box spaced apart and projecting forward of the plane of said second leg portion of said mounting bracket;
said second leg portion adapted to be positioned against said first flange portion of said metal sup-porting structure between said first and second corner regions thereof in preparation for mounting said bracket to the supporting structure, said second leg portion arranged initially to extend past said first corner region of said first flange portion of said metal sup-porting structure and, when deformed, to conform generally to the configuration of and embrace said first corner region of said first flange portion;
said first leg portion adapted to be positioned against said second corner region of said first flange portion and against said second corner region of said second flange portion, said first leg portion thus posi-tioned to lie between said first and said second flange portions substantially parallel with said web portion, said first leg portion arranged initially to extend past said second corner region of said second flange portion of said metal supporting structure and, when deformed, to conform generally to the configuration of said second corner region of said second flange portion;
the balance of the length of said first leg portion of said mounting bracket thus being positioned against said second flange portion of said supporting structure between said first and said second corner regions thereof, the balance of said first leg portion arranged initially to extend past said first corner region of said second flange portion and, when deformed, to conform generally to the configuration of and embrace said first corner region of said second flange portion of said supporting structure;
whereby said wiring box arrangement is caused to be firmly mounted to said supporting structure with the plane of said forward opening of said wiring box projecting and spaced apart from the plane of said first flange portion of said supporting structure.
2. An electrical wiring box arrangement in accordance with claim 1 wherein said plurality of sets of openings in said first leg portion consists of three spaced apart triads of openings in said first leg portion positioned to coact with said attachment means disposed in the wall structure of said box to attach said box to said mounting bracket with the plane of said forward opening of said box projecting forward of the plane of said second leg portion of said bracket by any one of three predetermined distances.
3. An electrical wiring box arrangement in accordance with claim 2 wherein said predetermined distances are about 3/8 inch, 1/2 inch, and 5/8 inch.
4. An electrical wiring box arrangement in accordance with claim 1 wherein said first leg portion of said bracket is between about 5-1/2 inches to about 6-1/2 inches in length.
5. An electrical wiring box arrangement in accordance with claim 4 wherein said second leg portion of said bracket is between about 2 inches to about 3 inches in length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000376254A CA1148645A (en) | 1981-04-27 | 1981-04-27 | Electrical wiring box arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000376254A CA1148645A (en) | 1981-04-27 | 1981-04-27 | Electrical wiring box arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1148645A true CA1148645A (en) | 1983-06-21 |
Family
ID=4119825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000376254A Expired CA1148645A (en) | 1981-04-27 | 1981-04-27 | Electrical wiring box arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1148645A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5810303A (en) * | 1997-08-13 | 1998-09-22 | Temco Electric Products Company, Inc. | Stud bracket to mount a wiring box to a stud |
-
1981
- 1981-04-27 CA CA000376254A patent/CA1148645A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5810303A (en) * | 1997-08-13 | 1998-09-22 | Temco Electric Products Company, Inc. | Stud bracket to mount a wiring box to a stud |
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| MKEX | Expiry |