Junction Box Access Hood for Terminal Maintenance

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Solution Overview

Problem

Existing electric junction box assemblies require the complete removal of the top cover to access eyelet terminals, exposing internal components to damage and increasing manufacturing time, as they are designed to be delivered fully assembled with the top cover installed.

Innovation Solution

An electric junction box assembly with an access hood that allows selective exposure of the eyelet terminal without removing the top cover, featuring a hood with a closing member that engages and disengages from the hood mounting structure to cover or expose the eyelet terminal opening, ensuring the rest of the components remain protected.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the entire top cover is removed to access the eyelet terminal, then the eyelet terminal becomes accessible, but the manufacturing time increases and other electric components are exposed to damage

Engineering Contradiction:
ImproveAccess to eyelet terminalVSAvoidManufacturing time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The top cover is segmented into two functional parts: a fixed portion that remains attached to the junction box and a movable hood portion that can be opened independently. This segmentation allows workers to access the eyelet terminal by opening only the hood portion rather than removing the entire top cover, thereby reducing manufacturing time and minimizing exposure of other electric components to damage.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If the entire top cover is removed to access the eyelet terminal, then the eyelet terminal becomes accessible, but other electric components are exposed to accidental damage

Engineering Contradiction:
ImproveAccess to eyelet terminalVSAvoidExposure to damage
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The top cover is segmented into a fixed portion that remains attached to the junction box and a movable hood portion that can be opened independently. This segmentation allows workers to access the eyelet terminal by opening only the hood portion rather than removing the entire top cover, thereby protecting other electric components from exposure to accidental damage while maintaining ease of operation for terminal access.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If the top cover is designed to be fully removable, then access to internal components is simplified, but the complexity of the assembly increases

Engineering Contradiction:
ImproveAccess to componentsVSAvoidAssembly complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The top cover is segmented into a fixed portion and a movable hood portion connected by a hinge. This segmentation provides simplified access to the eyelet terminal through the movable hood while maintaining a relatively simple overall assembly structure that does not significantly increase device complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A hood mounting structure acts as an intermediary mechanism between the fixed portion and the movable hood portion. This intermediary provides a straightforward connection method that enables the movable hood functionality without substantially increasing assembly complexity, allowing the hood to be mounted and dismounted in a relatively simple manner.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS9787074B1Electric junction box assemblies with access hood
Publication Date: 2017.10.10 SUMITOMO WIRING SYSTEMS LTD
  • US9787074B1 patent drawing
  • US9787074B1 patent drawing
  • US9787074B1 patent drawing

AI summary

Electric junction box assemblies with an access hood for providing access to an eyelet terminal is provided. The electric junction box assembly includes a junction box configured to store electric components. The junction box includes an eyelet terminal support configured to support an eyelet terminal connection. A top cover is mounted onto the junction box. The top cover includes a first cut-out and a hood mounting structure. A hood is shaped so as to both engage and disengage the hood mounting structure and cover the eyelet terminal opening. In one instance the closing member of the hood is configured to engage the hood mounting structure so as to cover the eyelet terminal connection. In another instance, the hood may be disengaged so as to expose the eyelet terminal connection without having to remove the cover from the junction box.