Grill Cart Frame Structure for Racking Resistance and Easy Assembly
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Solution Overview
Problem
Barbecue grill carts face challenges in resisting racking forces and maintaining long-term stability in extreme environments while being cost-effective and easy to assemble, with existing designs lacking sufficient structural integrity and stability under high temperatures.
Innovation Solution
The design features inverted U-shaped side frames with welded connections, upwardly angled lips for additional strength, and strategically placed hooks for easy attachment of trays and control panels, along with a bottom panel design that enhances structural rigidity through flanges and fasteners, facilitating assembly and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional tubular members connected by nuts and bolts are used, then assembly is relatively simple, but structural integrity and resistance to racking forces are insufficient
Solution Approach 1:
The patent combines multiple structural elements into integrated components. The side panels are formed as single-piece stamped metal structures that integrate the panel body, lower edge bending, and attachment features into one component, eliminating the need for separate tubular members, cross members, and multiple fasteners while providing equivalent or superior structural integrity
Solution Approach 2:
The invention changes the structural parameters by transitioning from a tubular framework to flat stamped metal panels with strategically bent edges. The lower edge bending creates rigid triangular structures that resist racking forces, while the integrated design maintains assembly simplicity through single-piece construction with built-in attachment features
2Reliability
If substantial structural support is provided for heavy fireboxes, then safety and stability are improved, but manufacturing cost and complexity increase
Solution Approach 1:
The patent applies local quality by concentrating structural reinforcement only where needed. The lower edges of the side panels are bent upward to create rigid triangular structures that specifically address racking forces at the critical lower portion of the cart, while the upper portions maintain simpler designs. This localized reinforcement provides necessary stability without requiring complex structural elements throughout the entire cart
Solution Approach 2:
The invention uses edge bending and curving of the panel lower edges to create rigid triangular structures. This curvature transformation converts flat panels into three-dimensional rigid forms that inherently resist deformation and racking forces, providing substantial structural support through geometric configuration rather than added complexity
3Adaptability or versatility
If frequent moving and outdoor exposure are accommodated, then versatility is improved, but durability and long-term stability deteriorate
Solution Approach 1:
The patent employs dynamically optimized structural features that adapt to different loading conditions. The bent lower edges create rigid triangular structures that provide exceptional resistance to racking forces during movement, while the integrated one-piece construction eliminates joints that could fail over time. This dynamic structural design maintains durability through repeated use and exposure to extreme environments
Data Source
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AI summary
A cart suitable for supporting a grill, including a firebox. The cart has four panels each of which has all four of its edges bent to form a flange that provides structural rigidity and a connection feature for facilitating the assembly of the cart. Two opposing side panels are carried by and preferably welded to a respective side frame. The side frames are joined by upper crossbars, one at the front of the cart and a second at the rear of the cart. A bottom panel fits into and is carried by troughs formed by upturned lips on the lower edges of the side panels. The structural integrity and racking strength of the cart is enhanced by the attachment of a rear panels, which has a lower lip that locks into engagement with the rear edge of the bottom panel. The top edge of the rear panel is fastened to the rear upper crossbar to complete the basic structure of the cart. Hooks welded to the side frames allow easy and secure attachment of side and front attachments to the cart.