Pivotal Cover Junction Box for Tractor Trailer Moisture Protection
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Solution Overview
Problem
Existing electrical junction boxes for tractor trailer rigs lack a secure and efficient design for attaching and managing electrical supply and distribution lines, making maintenance and repair processes cumbersome and prone to moisture ingress.
Innovation Solution
A modular electrical junction box design featuring a container with a front opening, a pivotally attached cover, and removably secured breakers and control modules, along with a socket for the electrical supply cable, which allows for easy access and maintenance while preventing moisture entry through a gasketed door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the junction box uses a fixed sealed design, then moisture protection is improved, but maintenance accessibility deteriorates
Solution Approach 1:
The cover is pivotally attached to the container, allowing it to move between an open position for maintenance access and a closed position for moisture protection. This dynamic attachment enables the junction box to switch between maintaining accessibility and preventing moisture ingress based on operational needs.
2Reliability
If the breakers are permanently fixed in the junction box, then connection reliability is improved, but replacement efficiency deteriorates
Solution Approach 1:
The breakers are designed as separate, independently removable components from the container. Each breaker can be individually accessed and replaced by opening the cover and removing the specific breaker, while other breakers remain in place. This segmentation allows for quick replacement of individual breakers without replacing the entire assembly.
3Strength
If the junction box design is integrated and fixed, then structural strength is improved, but ease of repair deteriorates
Solution Approach 1:
The junction box is divided into a container, a removable cover, and independently replaceable breakers. This segmentation allows repair personnel to access and replace individual components without disassembling the entire structure, maintaining structural integrity while significantly improving ease of repair.
Solution Approach 2:
The pivotally attached cover provides dynamic access to the internal components. The cover can be opened to expose breakers for replacement or inspection, then closed to restore the sealed structure. This dynamic mechanism enables easy repair while maintaining the structural strength of the integrated design.
Data Source
AI summary
An electrical junction box is configured to be attached to a vehicle. The box includes a container that has a front opening and a cavity located behind the front opening. A cover is movably attached to the container, so it can be moved into a closed position covering the front opening. A socket, to which an electrical supply cable can be removably connected, is fixed to the container beside the front opening. Breakers are secured to the container within the cavity. Each breaker has an input terminal and an output terminal. Each input terminal is electrically connected to the supply cable via the socket. Electrical distribution lines connect the breakers' output terminals to components of the vehicle that are outside the cavity.