CA2830401C - Junction box and combined junction box and cable tray assembly - Google Patents
Junction box and combined junction box and cable tray assembly Download PDFInfo
- Publication number
- CA2830401C CA2830401C CA2830401A CA2830401A CA2830401C CA 2830401 C CA2830401 C CA 2830401C CA 2830401 A CA2830401 A CA 2830401A CA 2830401 A CA2830401 A CA 2830401A CA 2830401 C CA2830401 C CA 2830401C
- Authority
- CA
- Canada
- Prior art keywords
- junction box
- base
- cable tray
- hook
- joined
- 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 - Fee Related
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
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0437—Channels
-
- 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
- H02G3/10—Distribution boxes; Connection or junction boxes for surface mounting on a wall
- H02G3/105—Distribution boxes; Connection or junction boxes for surface mounting on a wall in association with a plinth, channel, raceway or similar
Abstract
An electrical junction box including a base, a pair of opposing end walls joined to the periphery of the base, a back wall joined to the periphery of the base, the back wall comprising at least one opening for receiving an electrical cable, a top wall opposing the base and joined to the end walls and back wall, a removable cover for closing the open side of the junction box, and a hook joined to the outside of the top wall, the hook comprising a flange for engaging the side wall of a cable tray, and an electrical junction box in combination with a cable tray assembly.
Description
JUNCTION BOX AND COMBINED JUNCTION BOX AND CABLE TRAY
ASSEMBLY
FIELD
=
The present invention relates to the field of junction boxes and cable trays in general, and in particular, electrical junction boxes and cable trays.
BACKGROUND
When an electrical cable tray is installed, electrical junction boxes are typically installed on the side of the cable tray where access to the cables in the tray is required. The junction boxes are typically bolted to a side wall of the cable tray. This is a time consuming means of securing junction boxes to cable trays.
An improved junction box and combined junction box and cable tray assembly would be desirable wherein the junction box may be readily secured to a cable tray.
SUMMARY
According to one embodiment of the present invention, there is provided an electrical junction box including a base, a pair of opposing end walls joined to the periphery of the base, a back wall joined to the periphery of the base, the back wall including at least one opening for receiving an electrical cable, a top wall opposing the base and joined to the end walls and back wall, a removable cover for closing the open side of the junction box, a hook joined to the outside of the top wall, the hook including a flange for engaging the side wall of a cable tray.
The junction box may further include a flange around the open periphery formed by the base end walls and top wall. The junction box may further include a gasket wherein when closed, the gasket forms a seal between the flange and the cover.
The junction box may further include two or more hooks. Each hook may include an inclined section which may cooperate with the drip edge of a cable tray assembly to facilitate the shedding of moisture or water away from the drip edge.
According to another embodiment of the present invention, there is provided an electrical cable tray assembling including a base, a pair of opposing side walls joined to the tray, a junction box, the junction box including a base, a pair of opposing end walls joined to the periphery of the base, a back wall joined to the periphery of the base, the back wall including at least one opening for receiving an electrical cable, a top wall opposing the base and joined to the end walls and back wall, a flange around the open periphery formed by the base end walls and top wall, a removable cover including a gasket for closing the open side of the junction box, wherein when closed, the gasket forms a seal between the flange and the cover, a pair of hooks joined to the outside of the top wall, the hooks including a flange for engaging the side wall of a cable tray, the junction box on one of the side walls of the tray whereby the flange of the hook engages the inside of the side wall of the tray.
DRAWINGS
The invention is described below in greater detail with reference to the accompanying drawings which illustrate preferred embodiments of the invention, and wherein:
FIG. 1 is a front view of a junction box according to an embodiment of the present invention;
FIG. 2 is a rear view of the junction box of FIG. 1;
FIG. 3 is an exploded front view of the junction box of FIG. 1 with cover removed;
FIG. 4 is a cable tray and junction box assembly according to another embodiment of the present invention;
FIG. 5 is the cable tray junction box of FIG. 4 with a cover on the cable tray and;
FIG. 6 is a side view of the cable tray and junction box assemble of FIG. 5.
=
ASSEMBLY
FIELD
=
The present invention relates to the field of junction boxes and cable trays in general, and in particular, electrical junction boxes and cable trays.
BACKGROUND
When an electrical cable tray is installed, electrical junction boxes are typically installed on the side of the cable tray where access to the cables in the tray is required. The junction boxes are typically bolted to a side wall of the cable tray. This is a time consuming means of securing junction boxes to cable trays.
An improved junction box and combined junction box and cable tray assembly would be desirable wherein the junction box may be readily secured to a cable tray.
SUMMARY
According to one embodiment of the present invention, there is provided an electrical junction box including a base, a pair of opposing end walls joined to the periphery of the base, a back wall joined to the periphery of the base, the back wall including at least one opening for receiving an electrical cable, a top wall opposing the base and joined to the end walls and back wall, a removable cover for closing the open side of the junction box, a hook joined to the outside of the top wall, the hook including a flange for engaging the side wall of a cable tray.
The junction box may further include a flange around the open periphery formed by the base end walls and top wall. The junction box may further include a gasket wherein when closed, the gasket forms a seal between the flange and the cover.
The junction box may further include two or more hooks. Each hook may include an inclined section which may cooperate with the drip edge of a cable tray assembly to facilitate the shedding of moisture or water away from the drip edge.
According to another embodiment of the present invention, there is provided an electrical cable tray assembling including a base, a pair of opposing side walls joined to the tray, a junction box, the junction box including a base, a pair of opposing end walls joined to the periphery of the base, a back wall joined to the periphery of the base, the back wall including at least one opening for receiving an electrical cable, a top wall opposing the base and joined to the end walls and back wall, a flange around the open periphery formed by the base end walls and top wall, a removable cover including a gasket for closing the open side of the junction box, wherein when closed, the gasket forms a seal between the flange and the cover, a pair of hooks joined to the outside of the top wall, the hooks including a flange for engaging the side wall of a cable tray, the junction box on one of the side walls of the tray whereby the flange of the hook engages the inside of the side wall of the tray.
DRAWINGS
The invention is described below in greater detail with reference to the accompanying drawings which illustrate preferred embodiments of the invention, and wherein:
FIG. 1 is a front view of a junction box according to an embodiment of the present invention;
FIG. 2 is a rear view of the junction box of FIG. 1;
FIG. 3 is an exploded front view of the junction box of FIG. 1 with cover removed;
FIG. 4 is a cable tray and junction box assembly according to another embodiment of the present invention;
FIG. 5 is the cable tray junction box of FIG. 4 with a cover on the cable tray and;
FIG. 6 is a side view of the cable tray and junction box assemble of FIG. 5.
=
2 DETAILED DESCRIPTION
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, which are intended to be read in conjunction with both this summary, the detailed description and any preferred and/or particular embodiments specifically discussed or otherwise disclosed.
This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided by way of illustration only and so that this disclosure will be thorough, complete and will fully convey the full scope of the invention to those skilled in the art.
Referring initially to FIGS. 1 to 3, a junction box according to one embodiment of the present invention is indicated generally at 2. In one embodiment, the junction box 2 is composed of hot dipped galvanized steel but may be composed of other suitable non-combustible material(s), such as stainless steel, that meets the NEMA 4 rating. The junction box 2 includes a base 4, a top 5 opposing the base 4, opposing generally parallel side walls 6 and 8 joined to the base, and a back wall 10 joined to the base. The back wall includes holes 11 and 13 for receiving cables in the box. A removable cover 12 is provided on the front of the junction box 2. The base 4, top 5, side walls 6 and 8 and cover 12 are square in shape but can be rectangular and are joined together at their seams by welding, but other suitable joining means may be used. A gasket is provided on the cover 12 to sealingly engage the flange 14 on the front of the junction box 2.
Four holes 16 are provided at the corners of the cover 12 and four threaded holes 18 are provided at the corners of the flange 14 to close the junction box 2.
When the holes 16 and 18 are in registration, fasteners, such as stainless steel screws, may be inserted into the holes 16 and 18 and tightened to secure the cover 12 to the junction box 2.
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, which are intended to be read in conjunction with both this summary, the detailed description and any preferred and/or particular embodiments specifically discussed or otherwise disclosed.
This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided by way of illustration only and so that this disclosure will be thorough, complete and will fully convey the full scope of the invention to those skilled in the art.
Referring initially to FIGS. 1 to 3, a junction box according to one embodiment of the present invention is indicated generally at 2. In one embodiment, the junction box 2 is composed of hot dipped galvanized steel but may be composed of other suitable non-combustible material(s), such as stainless steel, that meets the NEMA 4 rating. The junction box 2 includes a base 4, a top 5 opposing the base 4, opposing generally parallel side walls 6 and 8 joined to the base, and a back wall 10 joined to the base. The back wall includes holes 11 and 13 for receiving cables in the box. A removable cover 12 is provided on the front of the junction box 2. The base 4, top 5, side walls 6 and 8 and cover 12 are square in shape but can be rectangular and are joined together at their seams by welding, but other suitable joining means may be used. A gasket is provided on the cover 12 to sealingly engage the flange 14 on the front of the junction box 2.
Four holes 16 are provided at the corners of the cover 12 and four threaded holes 18 are provided at the corners of the flange 14 to close the junction box 2.
When the holes 16 and 18 are in registration, fasteners, such as stainless steel screws, may be inserted into the holes 16 and 18 and tightened to secure the cover 12 to the junction box 2.
3 Hooks indicated generally at 20 and 22 are provided on the top 5 for attaching the junction box 2 to a cable tray such as the cable tray indicated generally at 24 in FIGS. 4, 5 and 6. The hooks 20 and 22 each include a base attached to the top 5, a first vertical section 28 generally perpendicular to the base 26, inclined section 30, a second vertical section 32 generally perpendicular to the base 26, a top section 34 generally parallel to the top 5 and a flange 36 generally perpendicular to the top 5. In certain embodiments, only one hook may be provided or more than two hooks may be provided. In still further embodiments, the hooks may vary in size. In still further embodiments, a hole may be provided in the base 26 for receiving a fastener for securing the hook 20 to the top 5 or the hook 20 may be welded to the top of the junction box 2 or secured by other suitable means. In still further embodiments, other configurations for the hook 20 are possible. For example, a single vertical section may be used in place of the sections 28, 30 and 32.
The cable tray 24 includes a base 38 and generally parallel side walls 40 and 42 and internal dividers 44 and 46. The internal dividers 44 and 46 are optional. In other embodiments, more than two internal dividers may be provided.
The free ends of side walls 40 and 42 include lips 48 and 50 respectively which extend generally perpendicularly to the side walls 40 and 42.
The cable tray 24 is provided with a cover 52 having flanges 54 and 56 along the side edges of the cover 52.
Referring to FIGS. 4-6, when the junction box 2 is installed on the cable tray 24, the top section 34 of each hook 20, 22 rests on the lip 50 and the flange 36 engages the inside of the wall 42 of the cable tray 24.
In some embodiments, the cable tray 24 can be uncovered, as shown for example in FIG. 4, while in other embodiments, the cable tray 24 can be covered by cover 52, as shown for example in FIGS. 5 and 6. When the cover 52 is in place, the flange 56 retains the front of the second vertical section 32 of the hooks 20, 22 to restrict lateral movement of the junction box 2 away from the side wall
The cable tray 24 includes a base 38 and generally parallel side walls 40 and 42 and internal dividers 44 and 46. The internal dividers 44 and 46 are optional. In other embodiments, more than two internal dividers may be provided.
The free ends of side walls 40 and 42 include lips 48 and 50 respectively which extend generally perpendicularly to the side walls 40 and 42.
The cable tray 24 is provided with a cover 52 having flanges 54 and 56 along the side edges of the cover 52.
Referring to FIGS. 4-6, when the junction box 2 is installed on the cable tray 24, the top section 34 of each hook 20, 22 rests on the lip 50 and the flange 36 engages the inside of the wall 42 of the cable tray 24.
In some embodiments, the cable tray 24 can be uncovered, as shown for example in FIG. 4, while in other embodiments, the cable tray 24 can be covered by cover 52, as shown for example in FIGS. 5 and 6. When the cover 52 is in place, the flange 56 retains the front of the second vertical section 32 of the hooks 20, 22 to restrict lateral movement of the junction box 2 away from the side wall
4 when the cover is in place on the tray. The cover 52 also restricts movement of the junction box away from the tray 24 in a direction parallel to the side wall 42. The flange 56 also serves as drip edge. In certain embodiments, the inclined section 30 serves to shed water away from the underside of the flange 56.
In other embodiments, more than one junction box may be secured to the side wall 42 of the cable tray 24, such as at spaced intervals. In still further embodiments, one or more junction boxes 2 may be secured to the side wall 40 in an analogous manner. Cables (not shown) run in the cable tray 24 may be fished through one or more holes (not shown) in the side walls 40 and/or 42 and through holes 11 and 13 of the junction box 2. The cables may be spliced or otherwise connected inside the junction box 2. The junction box 2 may be closed with the cover 12 when access to the inside of the junction box is not required. A hole is provided in the side 6 of the junction box 2 for additional electrical cables to be received into the box 2. It is understood that the number of holes in the junction box for receiving electrical cables may vary.
While the present invention has been described above in terms of specific embodiments, it is to be understood that the invention is not limited to these disclosed embodiments. Many modifications and other embodiments of the invention will come to mind of those skilled in the art to which this invention pertains, and which are intended to be and are covered by both this disclosure and the appended claims. It is indeed intended that the scope of the invention should be determined by proper interpretation and construction of the appended claims and their legal equivalents, as understood by those of skill in the art relying upon the disclosure in this specification and the attached drawings.
In other embodiments, more than one junction box may be secured to the side wall 42 of the cable tray 24, such as at spaced intervals. In still further embodiments, one or more junction boxes 2 may be secured to the side wall 40 in an analogous manner. Cables (not shown) run in the cable tray 24 may be fished through one or more holes (not shown) in the side walls 40 and/or 42 and through holes 11 and 13 of the junction box 2. The cables may be spliced or otherwise connected inside the junction box 2. The junction box 2 may be closed with the cover 12 when access to the inside of the junction box is not required. A hole is provided in the side 6 of the junction box 2 for additional electrical cables to be received into the box 2. It is understood that the number of holes in the junction box for receiving electrical cables may vary.
While the present invention has been described above in terms of specific embodiments, it is to be understood that the invention is not limited to these disclosed embodiments. Many modifications and other embodiments of the invention will come to mind of those skilled in the art to which this invention pertains, and which are intended to be and are covered by both this disclosure and the appended claims. It is indeed intended that the scope of the invention should be determined by proper interpretation and construction of the appended claims and their legal equivalents, as understood by those of skill in the art relying upon the disclosure in this specification and the attached drawings.
5
Claims (9)
1. An electrical junction box comprising:
a base, a pair of opposing end walls joined to the periphery of the base, a back wall joined to the periphery of the base, the back wall comprising at least one opening for receiving an electrical cable, a top wall opposing the base and joined to the end walls and back wall, a removable cover for closing the open side of the junction box, and a hook joined to the outside of the top wall, the hook comprising a flange for engaging the side wall of a cable tray.
a base, a pair of opposing end walls joined to the periphery of the base, a back wall joined to the periphery of the base, the back wall comprising at least one opening for receiving an electrical cable, a top wall opposing the base and joined to the end walls and back wall, a removable cover for closing the open side of the junction box, and a hook joined to the outside of the top wall, the hook comprising a flange for engaging the side wall of a cable tray.
2. The junction box of claim 1 further comprising a second hook joined to the outside of the top wall, the hook comprising a flange for engaging the side wall of a cable tray.
3. The electrical junction box of claim 1 or 2 wherein the box components are composed of a non-combustible material meeting the NEMA 4 standard.
4. The electrical junction box of any one of claims 1 to 3, further comprising a flange around the open periphery formed by the base end walls and top wall.
5. The electrical junction box of any one of claims 1 to 4 wherein the removable cover further comprises a gasket wherein when closed, the gasket forms a seal between the flange and the cover.
6. The electrical junction box of any one of claims 1 to 5, wherein the hook further comprises an inclined section.
7. An electrical cable tray assembly comprising:
a base, a pair of opposing side walls joined to the base, a junction box according to any one of claims 1 to 6 on one of the side walls of the base whereby the flange of the hook engages the inside of the side wall of the tray.
a base, a pair of opposing side walls joined to the base, a junction box according to any one of claims 1 to 6 on one of the side walls of the base whereby the flange of the hook engages the inside of the side wall of the tray.
8. The electrical cable tray assembly of claim 7, further comprising a cover covering the cable tray, the cover comprising a flange whereby the flange retains the hook from lateral movement away from the side wall when the cover is in place on the tray.
9. The electrical cable tray assembly of claim 7 or 8, wherein the cover further comprises a drip edge and the inclined section of the hook cooperates with the drip edge to shed away from the drip edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2830401A CA2830401C (en) | 2013-10-21 | 2013-10-21 | Junction box and combined junction box and cable tray assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2830401A CA2830401C (en) | 2013-10-21 | 2013-10-21 | Junction box and combined junction box and cable tray assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2830401A1 CA2830401A1 (en) | 2013-12-20 |
| CA2830401C true CA2830401C (en) | 2014-07-08 |
Family
ID=49769795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2830401A Expired - Fee Related CA2830401C (en) | 2013-10-21 | 2013-10-21 | Junction box and combined junction box and cable tray assembly |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2830401C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9490614B2 (en) * | 2014-04-15 | 2016-11-08 | Tyco Electronics Corporation | Wire tray for a wire harness |
-
2013
- 2013-10-21 CA CA2830401A patent/CA2830401C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2830401A1 (en) | 2013-12-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |
Effective date: 20181022 |