Vehicle Junction Box Bracket Water Discharge Design
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Solution Overview
Problem
Conventional electrical junction boxes in automobiles are prone to water ingress through outlets during high-pressure washing or dew condensation, leading to potential electrical issues.
Innovation Solution
The design incorporates a bracket with a throughhole that communicates with the outlet, guiding water away from the junction-box body and providing a mechanism for prompt discharge of water via a groove system, while also using a ribbed structure to prevent water entry and enhance manufacturing efficiency and strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the outlet is provided in the junction-box body to discharge water, then water discharge function is improved, but water may enter the junction-box body through the outlet during high-pressure washing
Solution Approach 1:
The bracket is introduced as an intermediary component between the outlet and the external environment. It provides a throughhole that serves as a controlled passage for water discharge, preventing direct water ingress into the junction-box body while maintaining the outlet's discharge function.
Solution Approach 2:
The solution moves the water discharge path from a direct horizontal outlet to a vertical path through the bracket's throughhole. This dimensional change allows water to be discharged downward away from the junction-box body, preventing water ingress while maintaining discharge capability.
2Ease of operation
If the bracket is positioned in the lower space to attach the junction-box body, then attachment function is improved, but the outlet opening may be exposed to the outside
Solution Approach 1:
The bracket is designed to perform multiple functions: it attaches the junction-box body to the vehicle-body panel and simultaneously serves as a water discharge guide through its throughhole. This multi-functionality resolves the conflict between attachment positioning and outlet protection.
3Reliability
If a throughhole is provided in the bracket to guide water outside, then water discharge is improved, but the bracket structure becomes more complex
Solution Approach 1:
The throughhole for water discharge is integrated directly into the bracket structure during manufacturing. This merging of the water guide function into the existing bracket eliminates the need for separate components, maintaining structural simplicity while achieving effective water discharge.
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 solution effectively prevents water from entering the junction-box body and allows for quick discharge of water, enhancing the reliability of electrical components and reducing manufacturing costs by using a lightweight, cost-effective bracket design.
Implementation Method 1
the bracket 10 is provided in a lower space relative to the junction-box body 1 in a vertical direction... the throughhole being configured to guide the liquid via the outlet to an outside
Data Source
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AI summary
An electrical junction box includes a junction-box body having at least an outlet for discharging a liquid inside thereof to an outside thereof; and a bracket provided between the junction-box body and a vehicle-body panel. The bracket is adapted to attach the junction-box body to the vehicle-body panel such that the bracket resides in a lower space relative to the junction-box body in a vertical direction. The bracket includes a throughhole communicating with the outlet and adapted to guide the liquid from the outlet to the outside. The bracket may include a plurality of ribs spaced from each other and upstanding in a shape of a plate toward the vehicle-body panel such that the outlet is provided between the ribs. The ribs may be connected to each other via a foot of the bracket upstanding in a shape of a plate toward the vehicle-body panel.