Folding Table Frame With Nesting Side Rails for Compact Storage
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Solution Overview
Problem
Conventional banquet tables are bulky, difficult to store, and costly to transport due to their large size and weight, and existing fold-in-half tables lack sufficient weight-bearing capacity and are prone to sagging or breaking under load.
Innovation Solution
A folding table design featuring a blow-molded plastic table top with interlocking side rails that nest and overlap when folded, maintaining strength and rigidity while reducing height and width, allowing for compact storage and transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional banquet tables with large table tops and folding legs are used, then the table can be stored more conveniently when legs are collapsed, but the table top retains its large size and shape requiring significant storage area
Solution Approach 1:
The table top is divided into two equal sections that can be folded relative to each other. This segmentation allows the table top itself to be collapsed into a compact form, reducing the storage area from the full table top area to approximately one-quarter of the original area when both the table top and legs are folded.
Solution Approach 2:
The side rails are designed to nest within each other when the table is folded, with receiving portions and engaging portions that allow one rail section to be positioned inside another. This nesting mechanism significantly reduces the overall footprint and storage space required.
2Volume of moving object
If conventional fold-in-half tables with two sections pivotally connected by hinges are used, then the table can be folded in half for storage, but the connection between sections is weak causing the table top to sag or slump under weight
Solution Approach 1:
The side rails are formed with curved cross-sections (generally U-shaped, T-shaped, or W-shaped configurations) rather than flat rectangular sections. This curvature provides inherent structural strength and rigidity to the rails, enabling them to support significant weight while maintaining the folded configuration without sagging.
Solution Approach 2:
The side rails are constructed from composite materials or profiles that combine different geometric shapes and material properties to achieve optimal strength-to-weight ratio. The curved cross-sections and multi-component structures provide enhanced load-bearing capacity compared to simple flat rail designs.
3Strength
If the size and thickness of the frame are increased to construct a stronger fold-in-half table, then the table can support more weight, but the weight and cost of the table increases
Solution Approach 1:
The side rails utilize changed geometric parameters, specifically curved cross-sections with optimized thickness distributions. The curved profiles (U-shaped, T-shaped, W-shaped) provide higher moment of inertia and bending strength without increasing overall rail dimensions, achieving superior strength-to-weight ratio compared to straight rectangular rails.
Solution Approach 2:
The side rails have varying thickness and structural properties at different locations along their length. The curved cross-sections concentrate material where needed for maximum structural efficiency, providing local reinforcement at critical stress points while maintaining lighter overall weight.
4Area of moving object
If conventional banquet tables with extended length are used, then the table provides sufficient surface area for large groups, but it is difficult for a single person to move the table
Solution Approach 1:
The table top is segmented into two foldable sections connected by hinges, and the side rails are segmented into multiple portions that can nest within each other. This segmentation transforms a single large, immovable object into a compact, portable structure that one person can easily maneuver when folded.
Solution Approach 2:
The side rail portions are designed to nest concentrically within each other when the table is folded, dramatically reducing the overall dimensions. This nesting allows the extended-length table to be collapsed into a compact form factor that is easy to transport and store.
5Area of moving object
If conventional banquet tables with extended length are used, then the table provides sufficient surface area, but the extended length precludes transportation in typical passenger vehicles
Solution Approach 1:
The table transitions from a static extended configuration to a dynamic folded configuration. The hinges and nesting mechanisms enable the table to change its form factor, transforming from an extended length that exceeds vehicle trunk dimensions to a compact folded state that fits within typical passenger vehicles.
Solution Approach 2:
The side rails nest within each other in a telescoping manner, reducing the overall length and width of the table when folded. This nesting allows the table to be transported in standard passenger vehicles without requiring specialized trucks or trailers.
Data Source
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AI summary
A foldable table may include a first and second portion of a table top, collapsible legs, and a frame with a first and second portion. The first and second portions of the frame may be hingedly connected and attached to the first and second portions of the table top, and further include an engaging portion and a receiving portion. The engaging portion of the first portion of the frame may be at least partially disposed in the receiving portion of the second portion of the frame when the table top is in the folded position and the engaging portion of the second portion of the frame may be at least partially disposed in the receiving portion of the first portion of the frame when the table top is in the folded position.