CA1272522A - Universal support bracket for an electrical box - Google Patents

Universal support bracket for an electrical box

Info

Publication number
CA1272522A
CA1272522A CA000523967A CA523967A CA1272522A CA 1272522 A CA1272522 A CA 1272522A CA 000523967 A CA000523967 A CA 000523967A CA 523967 A CA523967 A CA 523967A CA 1272522 A CA1272522 A CA 1272522A
Authority
CA
Canada
Prior art keywords
strip
bent
arm
support bracket
electrical box
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
Application number
CA000523967A
Other languages
French (fr)
Inventor
William Nattel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commander Electrical Materials Inc
Original Assignee
Commander Electrical Materials Inc
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 Commander Electrical Materials Inc filed Critical Commander Electrical Materials Inc
Priority to CA000523967A priority Critical patent/CA1272522A/en
Application granted granted Critical
Publication of CA1272522A publication Critical patent/CA1272522A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/08Distribution boxes; Connection or junction boxes
    • H02G3/12Distribution boxes; Connection or junction boxes for flush mounting
    • H02G3/123Distribution boxes; Connection or junction boxes for flush mounting in thin walls
    • H02G3/126Distribution boxes; Connection or junction boxes for flush mounting in thin walls with supporting means for mounting on a single wall stud

Abstract

ABSTRACT OF THE DISCLOSURE

A universal support bracket attaches to different sizes of electrical boxes and holds a box rigidly within a hollow wall structure having different depths. The bracket comprises a flat elongate strip of sheet material, one end of which has an engagement hook to engage a side wall of the box, an arm at the one end has a first flange which may rest on the inside surface of a wall board to position an electrical box recessed from the outside surface, or the arm may be bent at a bend line so that the bent portion rests on the inside surface of a wall board to position a box substantially flush with the outside surface of the wall board. The strip has a plurality of locking tongues, each having a bend line so that when at least one of the tongues is bent, it locks the bracket to the box, and the other end of the strip has a series of bend lines spaced apart across the strip, such that a portion of the strip may be bent perpendicular to the strip to accommodate different depths of hollow wall structures.

Description

UNIVERSAL SUPPORT BRACXET FOR AN
ELECTRICAL B~X

The present invention relates to a bracket for supporting an electrical box in a hollow wall structure.
More specifically the present invention provides a bracket that can be adapted to hold electrical boxes of most standard sizes and fit either flush or recessed within hollow wall structures of different depths.
Most interior non-combustible wall structures are hollow and consist of a steel stud skeleton with wall board coverings. The steel studs are made of khin sheet metal which by itself is flexible, however, when the studs are attached to the stiff wall boards then the rigidity of the wall is achieved.
Electrical boxes for outlets, switches and the like, are attached to the steel studs directly or by means of brackets. In either case, the boxes require some additional means of support from the wall boards to achieve rigid mounting. In the past, this has been achieved by attaching additional supports to the box at the side opposite from the stud. In some cases, short pieces o~ steel studs or wood are attached by screws to the box and to the wall board. This method offers good support, but is relatively expensive as the parts are usually prepared at the job site and are time consuming to assemble in place.
It is an aim of the present invention to provide a universal support bracket that attaches to an electrical box and holds it rigidly within the wall structure. The bracket can position the electrical box either ~lush with the outside surface of the wall or recessed from the outside surfac~ of the wall~ The box is generally supported against the steel stud~
It is another aim of the invention to provide a universal support bracket that can be adapted to fit most sizes of electrical boxes and can also ~e adapted to fit ~ithin different depths of hollow wall structure.

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The present invention provides a universal support bracket for attaching different sizes of electrical boxes in hollow wall structures of different depths, the wall structure being formed of a plurality of studs spaced apart with a wall board covering, the bracket comprising a flat elongate strip of sheet material; one end of the strip having hook means to engage a side wall of an electrical box; an arm having a first flange at the one end of the strip, perpendicular to the strip and adjacent the hook means; plurality of locking tongues spaced apart at intervals on each side of the strip, each of the tongues having a bend line such that at least one of the tongues may be bent to lock the strip to an electrical box of a certain size; the other end of the strip having a second flange bent perpendicular to the strip; and plurality of bend lines spaced apart across the strip from the other end, such that a portion of the strip adjacent the other end may be bent perpendicular to the strip to accommodate different depths oE hollow wall structure.
In another embodiment the first flange of the support bracket is adapted to rest on the inside surface of the wall board and position the electrical box recessed from the outside surface of the wall board.
In a further embodiment the first flange of the support bracket is adapted to rest on the inside surface of the wall board and position the electrical box recessed from the outside surface of the wall board. In another embodiment, the arm has an arm bend line across a portion of the strip with the first flange thereon. When the arm is bent at the arm bend line, a portion of the arm is adapted to rest on the inside surface of the wall board and position the electrical box substantially flush with the outside surface of the wall board.

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In yet other embodiments the support bracket may include at least one reinforcing rib extendiny longitudinally along the strip between the plurality of bend lines spaced apart across the strip from the other end. The arm bend line across a portion of the strip, and the plurality of bend lines spaced apart across the strip from th~ other end are preferably each provided with an opening in the approximate center of the strip.
Referring now to the drawings:
FIG 1 is a plan view of one embodiment of a support bracket;
FIG 2 is a side view of ~he support bracket shown in FIG l;
FIG 3 is a plan view of the bracket shown in FIG 1 with a strip pvrtion bent to position an electrical box recessed and flush mounted to the inside surface of a wall structure;
FIG 4 is a side view of the bracket shown in FIG 3 positioning an electrical box recessed in a wall structure;
FIG 5 iS an isometric view of the bracket shown in FIG 3 positioning an electrical box recessed ln a wall structure;
FIG 6 is a plan view of the bracket shown in FIG 1 with a pair of locking tongues bent in to hold an electrical box and an arm portion bent to position an electrical box substantially flush mounted with the outside surface of a wall structure.
FIG 7 is a side view of the bracket shown in FIG 6 positioning an electrical box flush mounted in a wall structure;
FIG 8 is an isometric view of the bracket shown in FIG 6 positioning an electrical box flush mounted in a wall structure;
FIG 9 is a plan view showing another embodiment of a support bracket;
FIG 10 is a side view of the support bracket shown ~ in FIG 9.

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One embodiment of a universal support bracket 10 is shown in FIGS 1 & 2. The bracket 10 is preferably formed from sheet metal and has a flat elongate strip 12 which at one end has a pair of hooks 16 which fit over an open side of an electrical box. The hooks 16 are to hold the box. An arm 18 is positioned between the two hooks 16 with grooves 2n dividing the arm 18 from the hooks 16. At the end of the arm 18 is a first flange 22 which extends perpendicular from the flat elsngate strip 12~
The first flange 22 is used for positioning the bracket 10 when the electrical box 17 is recessed and flush mounted to the inside surface of a front wall board as shown i~ FIGS 3 to 5.
A bend line 24 is placed at the top of the arm 1~ 18 at the termination of the grooves 20. The bend line 24 may include an opening in its approximate center so that the arm may be bent by pliers or some other tool across the bend line 24. When the arm 18 is bent up as shown in FIGS 6 to 8, the perpendicular surface oE a portion of the arm 18 supports an electrical box 17 when flush mounted to the outside surface of the fron~ wall board.
As shown in FIGS 1 & 2, at the other end of the strip 12, a second flange 28 extends perpendicular from the end of the strip 12 on the same side as the fir~t flange 22. Three bend lines 30, 32 and 34 extend across the strip 12, spaced down from the eh~ with the second flange 28. These three bend lines 30, 32 and 34 may have openings in the approximate center of the strip 12 to help ensure that the bend occurs on the bend line~
There are generally two sizes of studs or channels 40 used in the construction of a wall structure as shown in FIGS 5 & 8, a 3 5/8 inch stud identified as dimension A and a 2 1/2 inch stud identified as dimension B. Other sizes of studs having different dimensions can be accommodated with different bend lines or additional bend lines. The bracket 10 is designed to fit in wall structures having either size of stud. In the case of the electrical box 17 being recessed as shown in FXGS 3 5, a box cover 42 is placed over the box 17 having a raised portion 44 which extends to the outside surface of the outer wall board 46~ As shown in FIG 4, the strip 12 is bent at bend line 30 for dimension A and at bend line 34 for dimension B. The bent portion of the strip resting on the surface of the inner uall board 48~
When the electrical box 17 is positioned flush with the outside surface of the outer wall board 46 as shown in FIGS 6 & 8, the strip need not be bent for studs of dimension A, but rests on flange 28 as shown in FIG 7, is bent at bend line 32 to accommodate dimension B studs.
The pairs of locking tongues 50 and 52 are provided for locking the bracket to an electrical box 17. One tongue on each side of the strip 12 forms a pair. Each locking tongue 50 and 52 has a bend line 54 at a slight angle to the strip 12 such that when a tongue 50, 52 is bent about it's bend line 54, it bends closer towards the box so that an electrical box 17 is locked between the tongue 50 or 52 and the hooks 16. By bending towards the box, the tongue 50 or 52 compensates for minor variations in depth for the box. The positions oE
the two pairs of tongues 50, 52 are such that they sui~
two standard sizes of boxes 17. When the electrical box 17 is recessed as shown in FIGS 3 to 5, the box 17 is generally held in position by the ccver plate 42 which is attached to the box 17 and grips the hooks 16 so the bracket 10 is firmly attached. In this mode, it is not essential to use the tongues 50 or 52. However, when the box is flush with the outside surface of the outer wall 46 as shown in FIGS 6 to 8, then the tongue is bent to grip the box~ As shown in the drawings, tongues 52 are bent in to hold the box 17 between the tongues 52 and the hooks 16. If the box 17 is deeper, then the tongues 50 are bent in rather than tongues 52 as illustrated.

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A reinforcing rib 56 is shown in the approximate center of the strip 12 extending between the openings in the bend lines 30, 3? and 34 and extending towards the end of the strip 12 with the`hooks 16 and arm 18.
FIGS 9 & 10 illustrate another bracket according to the present invention to fit in wall spaces dimension A or dimension B. The main difference between this bracket and that shown in the other drawings is that single tongues rather than pairs of tongues are provided to hold an electrical box. Tongues 60, 61, 62 and 63 are designed to hold electrical boxes having depth dimensions L, M, N and 0 respectively. Thus the bracket is adaptable for four different depths of boxes and can hold the box in two different wall space dimensions with the box either flush with the outside surace of the wall or recessed in so that it is substantially flush with the inside surface of the outer wall board.
The bend lines as described herein may all be scored in the metal to ensure ease of bending and ensure that the location of bend occurs along the desired line~
The bracket shown in FIGS 9 & 10 has notches at each end of the bend lines, except where the tongues prevent it~
In addition, holes in the center of the strip may also be used. It is believed that the method of adaption of the bracket to different sizes of electrical boxes, depths o studs and location of electrical boxes flush or recessed from ~he wall surface as well as the me~hod o attachment of the bracket to the box is new~
Various changes may be made to the embodiments shown herein without departing from the scope of the present invention which is limited only by ~he following claims~

Claims (10)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A universal support bracket for attaching different sizes of electrical boxes in hollow wall structures of different depths, the wall structure being formed of a plurality of studs spaced apart with a wall board covering, the bracket comprising:
a flat elongate strip of sheet material;
one end of the strip having hook means to engage a side wall of an electrical box;
an arm having a first flange at the one end of the strip, perpendicular to the strip and adjacent the hook means;
plurality of locking tongues spaced apart at intervals on each side of the strip, each of the tongues having a bend line such that at least one of the tongues may be bent to lock the strip to an electrical box of a certain size;
the other end of the strip having a second flange bent perpendicular to the strip; and plurality of bend lines spaced apart across the strip from the other end, such that a portion of the strip adjacent the other end may be bent perpendicular to the strip to accommodate different depths of hollow wall structure.
2. The support bracket according to Claim 1 wherein the first flange is adapted to rest on the inside surface of the wall board and support the electrical box recessed from the outside surface of the wall board.
3. A universal support bracket for attaching different sizes of electrical boxes in hollow wall structures of different depths, the wall structure being formed of a plurality of studs spaced apart with a wall board covering, the bracket comprising:
a flat elongate strip having hook means to engage a side wall of an electrical box;
an arm having a first flange at the one end of the strip, perpendicular to the strip and adjacent the hook means, the arm having an arm bend line across a portion of the strip with the first flange thereon to allow the arm to be bent perpendicular to the strip;
plurality of locking tongues spaced apart at intervals on each side of the strip, each of the tongues having a bend line such that at least one of the tongues may be bent to lock the strip to an electrical box of a certain size;
the other end of the strip having a second flange bent perpendicular to the strip, and, plurality of bend lines spaced apart across the strip from the other end, such that a portion of the strip adjacent the other end may be bent perpendicular to the strip to accommodate different depths of hollow wall structure.
4. The support bracket according to Claim 3 wherein when the arm is bent at the arm bend line, a portion of the arm is adapted to rest on the inside surface of the wall board and support the electrical box substantially flush with the outside surface of the wall board.
5. The support bracket according to Claim 3 or Claim 4 wherein two hooks are provided to engage the side wall of the electrical box; the arm has grooves on either side within the strip extending from the one end, and between the two hooks; and an arm bend line across a portion of the strip having the first flange thereon at the termination of the grooves to allow the arm to be bent perpendicular to the strip.
6. The support bracket according to Claim 1 or Claim 3 including at least one reinforcing rib extending longitudinally along the strip.
7. The support bracket according to Claim 1 or Claim 3 wherein the plurality of bend lines spaced apart across the strip are each provided with an opening in the approximate center of the strip.
8. The support bracket according to Claim 1 or Claim 3 wherein the bend line for each of the plurality of locking tongues is bent at a slight angle to the strip such that when at least one of the tongues is bent about the bend line, it bends closer towards the electrical box.
9. A universal support bracket for attaching different sizes of electrical boxes in hollow wall structures of different depths, the wall structures being formed of a plurality of studs spaced apart between opposing wallboards, the bracket comprising:
a flat elongate strip of sheet material;
one end of the strip having a first flange perpendicular to the strip to rest on an inside surface of one wallboard;
the other end of the strip having a second flange bent perpendicular to the strip to rest on an inside surface of the opposing wallboard;
a plurality of bend lines spaced apart across the strip from the other end, such that a portion of the strip adjacent the other end may be bent perpendicular to the strip to accommodate different depths of hollow wall structure, and intermediate mounting means integral with the flat strip for securing an electrical box to the flat strip adjacent the one end.
10. The support bracket according to Claim 9 wherein the intermediate mounting means secures electrical boxes of different sizes.
CA000523967A 1986-11-27 1986-11-27 Universal support bracket for an electrical box Expired CA1272522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000523967A CA1272522A (en) 1986-11-27 1986-11-27 Universal support bracket for an electrical box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000523967A CA1272522A (en) 1986-11-27 1986-11-27 Universal support bracket for an electrical box

Publications (1)

Publication Number Publication Date
CA1272522A true CA1272522A (en) 1990-08-07

Family

ID=4134444

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000523967A Expired CA1272522A (en) 1986-11-27 1986-11-27 Universal support bracket for an electrical box

Country Status (1)

Country Link
CA (1) CA1272522A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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
USD913080S1 (en) 2019-03-19 2021-03-16 Eaton Intelligent Power Limited Mounting bracket including a detachable leg
US11248740B2 (en) 2018-06-08 2022-02-15 Eaton Intelligent Power Limited Mounting bracket

Cited By (4)

* Cited by examiner, † Cited by third party
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
US11248740B2 (en) 2018-06-08 2022-02-15 Eaton Intelligent Power Limited Mounting bracket
USD913080S1 (en) 2019-03-19 2021-03-16 Eaton Intelligent Power Limited Mounting bracket including a detachable leg
USD965415S1 (en) 2019-03-19 2022-10-04 Eaton Intelligent Power Limited Mounting bracket

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