Junction box of a recessed luminaire for installation in shallow spaces

Patent metadata

Field	Value
Publication number	US-10164415-B2
Application number	US-201815985210-A
Country	US
Kind code	B2
Filing date	May 21, 2018
Priority date	May 4, 2017
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A junction box includes a first cover plate that covers a first open side defined by a main body, and a second cover plate that covers a second open side defined by the main body. The second cover plate includes a mounting pad to attach an electrical component thereto. The electrical component is disposed in an inner cavity defined by the main body when the second cover plate is in a closed position. Further, the junction box includes a fastening device that retains the first cover plate and the second cover plate in the closed position and operates without interfering with a mounting structure in which the junction box is disposed. Furthermore, the junction box includes chamfer walls and wire traps disposed thereon to receive and pass electrical wiring cables into the junction box therethrough.

First claim

What is claimed is:

1. A junction box comprising:
a main body comprising a top wall, a base wall, a pair of junction box side walls and a chamfer wall, the main body defining a first open side and a second open side;
a wire trap disposed on the chamfer wall, the wire trap to receive and pass an electrical wiring cable therethrough; and
a cover plate that comprises:
a cover plate side wall and a component mounting wall that receives an electrical component and that extends inwardly and substantially perpendicular from the cover plate side wall into an inner cavity defined by the main body,
wherein the cover plate is removably coupled to the main body of the junction box and, when the cover plate is in the closed position, the cover plate covers the first open side.

2. The junction box of claim 1 :
wherein the electrical component is disposed in the inner cavity when the cover plate is in the closed position.

3. The junction box of claim 2 , wherein the electrical component is a transformer.

4. The junction box of claim 1 , wherein the junction box further comprises:
a second cover plate that is removably coupled to the main body and covers the second open side; and
an elongated fastening device that comprises:
a first fastening feature that couples to the cover plate, and
a second fastening feature that couples to the second cover plate.

5. The junction box of claim 4 :
wherein the elongated fastening device further comprises a first regressed neck structure coupled to the first fastening feature and a second regressed neck structure coupled to the second fastening feature.

6. The junction box of claim 5 :
wherein the cover plate comprises a first notch to receive the first regressed neck structure and a first opening formed adjacent to the first notch to receive the first fastening feature, and
wherein the second cover plate comprises a second notch to receive the second regressed neck structure and a second opening formed adjacent to the second notch to receive the second fastening feature.

7. The junction box of claim 1 :
wherein the cover plate side wall includes a pair of mounting feet that are configured to engage complementary mating slots in the base wall of the main body to removably couple the cover plate to the main body.

8. The junction box of claim 4 :
wherein the second cover plate comprises a second side wall, a second bottom wall that extends substantially perpendicular to the second side wall from a bottom edge of the second side wall, and one or more coupling features that are disposed at a distal end of the second bottom wall that is away from the second side wall, and
wherein the one or more coupling features of the second cover plate are configured to engage complementary coupling features in the base wall of the main body to hingedly and removably couple the second cover plate to the main body.

9. The junction box of claim 8 , wherein the one or more coupling features include a tab with a hooked end.

10. The junction box of claim 1 :
wherein the component mounting wall of the cover plate includes a regressed surface disposed on opposite sides of a mounting pad, and
wherein each regressed surface defines a cavity that is configured to receive at least a portion of a coupling feature of a second cover plate that is used to hingedly and removably couple the second cover plate to the main body, the second cover plate configured to cover a second open side defined by the main body.

11. The junction box of claim 1 :
wherein the cover plate is coupled to the main body such that the component mounting wall of the cover plate is disposed on the base wall of the main body.

12. The junction box of claim 1 , wherein the electrical wiring cable is substantially horizontally oriented.

13. The junction box of claim 1 , wherein the electrical wiring cable is substantially vertically oriented.

14. A junction box comprising:
a main body comprising a top wall, a base wall, a first side wall connected to a first chamfer wall, and a second side wall connected to the base wall and the top wall, the main body defining a first open side and a second open side;
a first cover plate that is removably coupled to the main body and that covers the first open side defined by the main body when the first cover plate is attached to the main body, the first cover plate comprising a first notch and a first opening;
a second cover plate that is removably coupled to the main body and that covers the second open side defined by the main body when the second cover plate is attached to the main body, the second cover plate comprising a second notch and a second opening; and
a fastening device that comprises:
a first regressed neck received by the first notch and a first fastening feature received by the first opening and configured to retain the first cover plate to the main body, and
a second regressed neck received by the second notch and a second fastening feature received by the second opening and configured to retain the second cover plate to the main body.

15. The junction box of claim 14 :
wherein the junction box further comprises a wire trap disposed on the chamfer wall, the wire trap configured to receive and pass an electrical wiring cable therethrough, and
wherein the second cover plate comprises a mounting pad that is configured to attach an electrical component thereto using a fastener such that the second cover plate and the electrical component attached thereto are movable and accessible as a single unit, the electrical component being associated with an operation of a luminaire.

16. The junction box of claim 15 , wherein the electrical component is a transformer.

17. The junction box of claim 14 , wherein the fastening device further comprises:
an elongated body that is coupled to the main body of the junction box.

18. The junction box of claim 14 , wherein the electrical wiring cable is substantially horizontally oriented.

19. The junction box of claim 14 , wherein the electrical wiring cable is substantially vertically oriented.

20. The junction box of claim 14 :
wherein the second cover plate includes a pair of mounting feet that are configured to engage complementary mating slots in the base wall of the main body to hingedly and removably couple the second cover plate to the main body.

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Wronski Grzegorz
• Lin Zhihong
• Zhao Wei
• Ernst Oliver

Classifications

• H02G3/081 Primary

  Bases, casings or covers · CPC title

• H02G3/14

  Fastening of cover or lid to box · CPC title

• F21V21/043

  actuated by screwing · CPC title

• F21S8/026 Primary

  intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling · CPC title

• H02G3/20

  Ceiling roses {or other lighting sets} · CPC title