Removable-Cover Junction Box for Fast Power Disconnection
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Solution Overview
Problem
Existing electric junction box assemblies face challenges in efficiently disconnecting power for maintenance due to packaging constraints, making it difficult to access power terminals and requiring time-consuming wire disconnection.
Innovation Solution
An electric junction box assembly with a removable top cover featuring an electrically conductive patch and projection portions on terminals that complete an electric connection when the cover is mounted, allowing power disconnection by simply removing the cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the top cover is made enclosed and secure, then power distribution reliability is improved, but maintenance accessibility deteriorates
Solution Approach 1:
The top cover is segmented into a main body portion and a separate electrically conductive patch. This allows the cover to be opened for maintenance while maintaining electrical connectivity through the conductive patch that remains engaged with the terminals.
Solution Approach 2:
The electrically conductive patch acts as an intermediary element that maintains electrical connection between the top cover and the terminals inside the housing. This mediator allows the cover to be removed for maintenance while preserving power distribution capability.
2Reliability
If wire disconnection is required for power disconnection, then power safety is improved, but maintenance time increases
Solution Approach 1:
The electrically conductive patch is pre-configured to establish electrical connection with the terminals when the top cover is mounted. This preliminary arrangement allows power to be disconnected simply by removing the top cover without requiring wire disconnection, thus saving maintenance time while ensuring power safety.
3Ease of operation
If the top cover is removed for maintenance, then accessibility is improved, but electrical connection is lost
Solution Approach 1:
By separating the top cover into a main body and a conductive patch, the invention allows the main body to be removed for accessibility while the conductive patch maintains electrical connection with the terminals, thus preserving reliability during maintenance operations.
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
Facilitates quick and easy power disconnection for maintenance by removing the top cover, enhancing accessibility and reducing maintenance time.
Implementation Method 1
The pair of slits is disposed beneath the electrically conductive patch. A first terminal and a second terminal are disposed in the inner case and spaced part from each other. Both of the first terminal and the second terminal have a projection portion extending into a corresponding one of the pair of slits and contacting the electrically conductive path so as to complete an electric connection.
Data Source
AI summary
An electric junction box assembly includes an outer case and a top cover including an electrically conductive patch mounted to the outer case. An inner case is disposed in the outer case and includes an upper cover having a pair of slits spaced apart from each other and disposed beneath the electrically conductive patch. A first terminal and a second terminal are disposed in the inner case and spaced part from each other. Both of the first terminal and the second terminal have a projection portion extending into the pair of slits and contacting the electrically conductive path so as to complete an electric connection, wherein the electric connection is disconnected by removing the top cover.