Modular Power Supply with Integral Junction Box Mounting Extension

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Solution Overview

Problem

The installation of power supplies for solid state lighting systems is complicated due to the need to convert alternating current (AC) to direct current (DC) and requires cumbersome conduit and wire connections, especially when multiple supplies are connected to a single junction box.

Innovation Solution

A modular power supply design that allows easy mounting to standard junction boxes with integral extensions and end caps, enabling multiple power supplies to be connected to a single junction box without conduits, and featuring sealed wire connections for reliability in various orientations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional power supplies are installed using conduits and wire connections to junction boxes, then electrical power conversion from AC to DC is achieved, but the installation process becomes complicated and cumbersome

Engineering Contradiction:
Improveelectrical power conversionVSAvoidinstallation process
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The power supply unit is merged with an integral mounting extension that directly attaches to the junction box, combining the electrical power conversion function with the mechanical mounting function into a single integrated component, thereby eliminating the need for separate conduit installations

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The power supply design incorporates multiple functions: electrical power conversion from AC to DC, direct mounting to junction boxes via integral extensions, and sealed wire connections, allowing a single component to perform multiple tasks that previously required separate elements

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Power

If multiple power supplies are connected to a single junction box using conventional methods, then power conversion capacity is increased, but the installation complexity increases significantly

Engineering Contradiction:
Improvepower conversion capacityVSAvoidinstallation complexity
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The system is segmented into multiple identical modular power supply units, each with its own integral mounting extension, allowing independent installation and connection to the junction box without interfering with other units, thereby simplifying multi-unit installations

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If power supplies are mounted to junction boxes without integral extensions, then mounting flexibility is reduced, but the power supply design becomes simpler

Engineering Contradiction:
Improvemounting flexibilityVSAvoidpower supply design
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The mounting extension is pre-integrated into the power supply housing during manufacturing, with wire connections pre-sealed and positioned, so that during installation the unit can be directly attached to the junction box without requiring separate mounting operations or complex field assembly

Inventive Principle:
Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This design simplifies the installation process, reduces space requirements, and allows multiple power supplies to be connected to a single junction box, providing a compact and reliable power solution for solid state lighting systems.

Implementation Method 1

The power source (primary source) at many commercial and residential locations, however, is typically in the range of 100-240 volts alternating current (AC). As a result, a power supply is needed to convert the primary AC source to the appropriate DC source to drive the SSL systems.

Methodology Applied
Scientific EffectAC to DC conversion:

Data Source

PatentUS7714225B2Modular power supply
Publication Date: 2010.05.11 THE SLOAN COMPANY INC
  • US7714225B2 patent drawing
  • US7714225B2 patent drawing
  • US7714225B2 patent drawing

AI summary

A modular power supply particularly adapted for mounting to standard junction boxes in a system to provide a solid state lighting system compatible power signal. One embodiment of a modular power supply for mounting to a junction box according to the present invention includes a housing holding internal electronic components and a first extension integral to the housing for mounting to a junction box. The extension has an opening to the interior of the housing with primary wires passing from the interior of the housing through the extension. The first extension is positioned so that the power supply is capable of being mounted to the mounting surface of a junction box when the power supply is at different orientations.