Wheeled Tool Storage With Telescopic Handle and Protected Wheels
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Solution Overview
Problem
Existing tool storage devices face challenges in portability, durability, and accessibility, leading to project delays and increased costs due to difficulty in transporting and accessing tools and accessories across various terrains and weather conditions.
Innovation Solution
The tool storage devices incorporate features such as wheels for mobility, a handle assembly for easy maneuvering, a flexible and rigid frame structure for durability, and compartmentalized storage for organization, along with weather protection and secure closure mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If tool storage devices are made portable with wheels and handles, then mobility is improved, but structural complexity increases
Solution Approach 1:
The tool storage device is divided into separate functional modules: a body for storage, wheels for mobility, and a handle assembly for maneuvering. This segmentation allows each component to perform its specific function independently, resolving the contradiction by making the device portable through modular additions rather than integrating complexity throughout the entire structure.
Solution Approach 2:
The handle assembly is designed to be telescopic and adjustable, allowing it to extend and retract based on user needs. This dynamic feature improves ease of operation during transport while minimizing structural complexity when the handle is retracted, as the support arm can be positioned to provide stability only when needed.
2Strength
If the handle support arm has increased width for stability, then durability is improved, but the device becomes bulkier
Solution Approach 1:
The support arm is designed to be extendable and adjustable in width, providing increased stability only when the handle is in the extended position for transport. When the handle is retracted for storage, the support arm can be positioned to minimize the overall volume of the device, thus resolving the contradiction between stability and compactness.
Solution Approach 2:
The support arm features a rectangular cross-section with varying wall thicknesses, providing increased strength and stability at critical load-bearing areas while using less material in non-critical areas. This local optimization of material distribution achieves the required stability without uniformly increasing the overall device volume.
Data Source
AI summary
Tool storage devices. A tool storage device may include a handle assembly including a support arm connected between a body and a handle portion and having a substantially rectangular cross section oriented with first walls extending transverse to the axis having a greater width than second walls extending parallel to the axis. A width of the handle portion may be at least about 50% of a width of the body. The body may include a frame assembly formed of a rigid material, a wall formed of a flexible material and at least partially defining the storage compartment with an open top, and a cover formed of a rigid material connected to the frame assembly to selectively close the open top. A wheel well portion receives each wheel and may cover the width of the wheel and a portion of the circumference of the wheel. A radial clearance between the wheel and a lower end of the wheel well may be no more than about 0.5 inches.