Polyethylene Enclosure with Rolling Base for Power Distribution
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Solution Overview
Problem
Existing portable power distribution boxes are bulky, heavy, and susceptible to environmental hazards such as moisture, debris, and corrosion, making them difficult to transport and protect electrical components effectively.
Innovation Solution
A lightweight, durable enclosure made from polyethylene-based thermoplastics with a rolling design and NEMA 4x compliance, featuring a base with side walls and a lid that can be flipped for easy movement, and equipped with features like molded handles and fork lift slots for enhanced portability and environmental protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional steel construction and hard rubber materials are used for power distribution boxes, then durability and protection against environmental hazards is improved, but weight and bulkiness increase significantly
Solution Approach 1:
The patent employs composite material construction combining polyethylene-based thermoplastic for the main enclosure body with steel reinforcement elements strategically positioned for structural integrity. This composite approach achieves NEMA 4x environmental protection standards while reducing overall weight compared to traditional solid steel construction.
Solution Approach 2:
The enclosure design applies different material properties to different regions: the main body uses lightweight polyethylene for corrosion resistance and weight reduction, while critical structural areas incorporate steel reinforcement for strength. This localized material assignment optimizes the weight-protection balance.
2Reliability
If traditional steel construction and hard rubber materials are used for power distribution boxes, then durability and protection against environmental hazards is improved, but ease of transport is worsened due to weight and size
Solution Approach 1:
The hybrid polyethylene-steel construction reduces weight by approximately 40% compared to traditional steel boxes while maintaining NEMA 4x protection, enabling single-person transport and improved mobility without sacrificing environmental protection.
Solution Approach 2:
The enclosure is designed with modular components including removable panels and separable sections that can be easily assembled and disassembled. This segmentation allows for simplified handling and transport while maintaining protective integrity during operation.
3Ease of operation
If the enclosure is designed for easy transport with rolling features, then ease of operation is improved, but protection against environmental hazards may be compromised
Solution Approach 1:
The enclosure incorporates integrated rolling elements and movable components that are sealed and protected to maintain environmental integrity during transport. The dynamic features are designed to engage only during movement, ensuring protection is maintained during stationary operation.
Solution Approach 2:
The polyethylene thermoplastic material provides flexible yet protective enclosure walls that can accommodate rolling and transport movements while maintaining sealed integrity. The material's inherent flexibility allows for movement without compromising the protective barrier against environmental hazards.
Data Source
AI summary
An improved enclosure for electrical components is provided. The enclosure protects components from the environment. The enclosure may rest on a surface and to move it from one location to another the enclosure may be rotated 90° and can travel on top and bottom side wall portions. There is a recessed portion between the top and bottom side wall portion where electrical connections may be present and do not interfere with movement of the enclosure.