Modular Apron Assembly for Low-Force Folding Table Mechanisms
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Solution Overview
Problem
Conventional folding tables require significant force input to fold and unfold, which is often associated with reduced structural strength and performance.
Innovation Solution
A support mechanism with apron assemblies, cross bars, perpendicular bars, coupling flanges, and folding arms that facilitate folding and unfolding with reduced force input, maintaining structural strength and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional folding mechanisms are used to enable folding, then the table can be stowed in smaller space, but significant force input is required to fold and unfold
Solution Approach 1:
The patent employs a spring-loaded mechanism where a spring provides counterbalancing force to offset the weight of the table surface and legs during folding and unfolding operations. This counterweight mechanism significantly reduces the manual force input required by the user, as the spring absorbs and compensates for the gravitational force acting on the moving components.
Solution Approach 2:
The folding mechanism incorporates movable joints and articulated connections between the legs and surface, allowing the table to transition dynamically between folded and unfolded states. The legs are connected via hinges and pivots that enable smooth rotational motion, transforming the static structure into a dynamic system that can adapt its configuration with minimal force.
2Ease of operation
If force input requirements are reduced for folding, then ease of operation improves, but structural strength may be compromised
Solution Approach 1:
The table structure is divided into distinct modular components including separate legs, a surface, and intermediate support elements. These segmented parts are connected through standardized joints and mounting points, allowing the structure to maintain full strength when assembled while enabling easy disassembly and folding. The segmentation allows force distribution across multiple connection points rather than concentrating stress at single weak points.
Solution Approach 2:
The spring mechanism is pre-loaded and positioned to automatically engage and provide assistive force before the folding operation begins. This preliminary action ensures that the counterbalancing force is already in place to reduce the effort needed, while the pre-positioned joints and connection points are ready to maintain structural integrity during the transition, preventing strength compromise.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables folding and unfolding with less than 30 pounds of force, providing structural integrity and efficiency in space utilization while reducing the force required compared to conventional tables.
Implementation Method 1
a spring-loaded mechanism that stores and releases mechanical energy
Implementation Method 2
The counterbalancing mechanism may include a leg assembly, a surface, and a spring-loaded mechanism
Data Source
AI summary
A modular apron assembly for use in a folding mechanism is provided. The apron assembly may include a cross bar and four perpendicular bars. The perpendicular bars may be affixed to the cross bar and oriented substantially perpendicular to the cross bar. Two of the perpendicular bars may include a leg mount. A coupling flange may extend from each end of the cross bar. Each coupling flange may define a coupling hole for connecting to the coupling holes of an opposing apron assembly. An elbow flange may extend from the cross bar and define a mounting hole. The distance between the mounting hole and the coupling holes may be less than 40 millimeters, the distance between the coupling holes and the leg mounts may be more than 69 millimeters, and the distance between the coupling holes and the leg mounts may be less than 120 millimeters.