Junction Box Folded Wall Water Ingress Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electrical junction boxes are vulnerable to water ingress through vertical linear grooves on their accommodation covers, especially when exposed to pressurized water, leading to potential damage and malfunction.
Innovation Solution
The design incorporates folded wall parts on the accommodation cover and box body to redirect water flowing along the grooves downwards, preventing it from entering the junction box, and includes a side cover section with a surrounding wall to block gaps between the electrical connection member and the groove, ensuring water does not escape or enter through these gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a vertical linear groove is formed on the outer surface of the accommodation cover for miniaturization or rigidity improvement, then the structural rigidity is improved, but water can flow along the groove and enter the junction box through gaps
Solution Approach 1:
The groove is divided into multiple sections by folded wall parts that create step-like structures. These folded wall parts segment the continuous groove path, preventing water from flowing directly into the junction box while maintaining the groove's structural function for rigidity and miniaturization.
Solution Approach 2:
The folded wall parts convert the harmful effect of water flowing along the groove into a beneficial drainage path. The stepped structure created by folding the walls redirects water flow outward and downward, transforming the groove from a water conduit into a water diversion feature that protects the junction box.
2Ease of operation
If the groove is formed to accommodate electrical connection members, then the electrical components are properly positioned, but gaps between the connection members and groove allow water to escape and enter
Solution Approach 1:
The folded wall parts are strategically positioned at specific locations where gaps between electrical connection members and the groove pose water ingress risks. This localized modification provides enhanced water protection at critical points while maintaining the overall groove structure needed for component positioning.
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
The solution effectively guides water away from the junction box, preventing ingress and ensuring the electrical components remain dry, even when exposed to pressurized water, thereby enhancing the durability and reliability of the electrical junction box.
Implementation Method 1
water flowing upwards along a wall surface of the groove is guided downwards from the accommodation cover by the folded wall part
Data Source
AI summary
An electrical junction box includes an accommodation cover in which electrical parts are accommodated, and a groove that is formed on an outer surface of the accommodation cover and linearly extends in an up-down direction of the accommodation cover. The accommodation cover includes a folded wall part at which a wall surface of the groove is folded downwards. The accommodation cover includes a box body in which the electrical parts are accommodated, and a lower cover that covers a lower portion of the box body. The groove includes a first groove part formed on the lower cover. The folded wall part is formed on the first groove part.