Secure Storage Cart Assembly With Tolerance Adjustment
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Solution Overview
Problem
Existing storage carts suffer from high tolerances at edges and corners, difficult assembly, and security issues due to loose connections, leading to vibration, noise, and potential tool theft.
Innovation Solution
A storage cart kit for on-site assembly with a tolerance adjustment mechanism, adjustable hinges, and a handle system that secures without fasteners, ensuring precise alignment and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If storage carts are assembled as kits on-site, then ease of assembly and mobility are improved, but manufacturing tolerances at frame edges and corners increase leading to insecure construction
Solution Approach 1:
The frame panels are pre-assembled and pre-toleranced at the factory to establish precise alignment and secure connections before shipping. This preliminary assembly ensures that critical joints and corners are manufactured with tight tolerances under controlled conditions, then transported as partially assembled units for final on-site completion.
Solution Approach 2:
The storage cart is divided into modular frame panels that can be assembled in sections. By segmenting the structure into manageable panels with pre-established connections, the system maintains precision at critical interfaces while enabling easier on-site assembly of the overall structure.
2Reliability
If traditional storage carts are used, then security against tool insertion as wedge is maintained, but vibration and noise occur during transport due to loose connections
Solution Approach 1:
Anti-rattle features and secure connection elements are pre-installed on frame panels during factory assembly. These features are built into the structure beforehand to prevent vibration and noise during transport, while also maintaining security by preventing tool insertion at critical joints and corners.
3Strength
If fixed assembly methods are used, then structural integrity is maintained, but adjustability of door panels and handle position is limited
Solution Approach 1:
The frame panels incorporate adjustable connection points and movable mounting locations that allow door panels and handles to be repositioned along designated paths or zones. This dynamic adjustment capability enables users to modify the cart configuration for different uses while maintaining structural integrity through engineered adjustment mechanisms that preserve connection strength.
Data Source
AI summary
Secure storage carts are disclosed herein and capable of being assembled and disassembled on-site without common disadvantages that affect storage carts designed for on-site assembly. Secure storage carts disclosed herein may be assembled to a reduced tolerance, eliminating potential points of failure in the assembled cart, and giving the user a more solid feel to the operation. Methods for assembling storage carts are also disclosed herein and can include adjusting the extension depth of a door panel hinge. Methods disclosed herein also may include applying a preloading force to the cart frame, to reduce tolerances between components of the storage cart once assembled. Kits are also provided herein containing the components required to assemble the cart on-site, in configurations that may be easily transported to and from the job site when disassembled. Kits also may provide for straightforward and secure assembly of the carts.