Electric Junction Box Bottom Cover for Fast Power Isolation
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Solution Overview
Problem
Existing electric junction box assemblies in vehicles require time-consuming disconnection of wires from power terminals for maintenance, and often necessitate removal of both top and bottom covers to access power terminals, complicating the process.
Innovation Solution
The electric junction box assembly features a removable bottom cover that, when attached, completes an electric connection and, when removed, disconnects the power, allowing for easy maintenance without the need to disconnect wires or remove the top cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wires are disconnected from power terminals for maintenance, then power disconnection is achieved, but maintenance time increases
Solution Approach 1:
The patent extracts the power disconnection function from the wire connection process. By removing the bottom cover, the activation tab is exposed and can be moved to disconnect the spring from the terminals, achieving power disconnection without touching the wires. This separates the power disconnection action from the wire manipulation process, significantly reducing maintenance time.
Solution Approach 2:
The patent introduces an intermediary mechanism (the activation tab and spring assembly) between the user and the power terminals. Instead of directly manipulating wires or terminals, the user interacts with the bottom cover and activation tab, which then triggers the power disconnection through the spring mechanism. This intermediary system simplifies the user action while ensuring reliable power disconnection.
2Ease of operation
If top cover or bottom cover is removed to access power terminals, then maintenance access is achieved, but device complexity increases
Solution Approach 1:
The patent segments the cover system into a removable bottom cover and a fixed top cover. The bottom cover is specifically designed to be removable to expose the activation tab, while the top cover remains in place. This segmentation allows maintenance access without requiring removal of the entire housing or both covers, simplifying the maintenance procedure while maintaining structural integrity.
Solution Approach 2:
Instead of requiring access through the top cover or requiring complete disassembly, the patent inverts the approach by making the bottom cover removable. The activation tab is positioned on the bottom side, so removing the bottom cover (rather than the top cover) provides direct access to the power disconnection mechanism. This inversion simplifies the maintenance access path.
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 enables quick and safe disconnection of power by simply removing the bottom cover, facilitating easier maintenance and reducing the time required for access to power terminals.
Implementation Method 1
The fuse cover assembly further includes a tower disposed on the top surface and configured to hold a spring
Implementation Method 2
position the spring between the pair of terminals so as to complete an electric connection
Data Source
AI summary
An electric junction box to facilitate the supply of power from a battery to an electric device, including an outer case having an open bottom opposite of an open top. A pair of terminals are fixed within the outer case and spaced apart from each other. A top cover is configured to close the open top and a bottom cover is configured to close the open bottom. A fuse cover assembly is disposed within the outer case, the fuse cover assembly including a base having a top surface and a bottom surface opposite of the top surface, a tower disposed on the top surface and configured to hold a spring, and an activation tab disposed on the bottom surface. The bottom cover is configured to engage the activation tab so as to position the spring between the pair of terminals, completing the electrical connection and allowing the flow of power through the electric junction box.