Collapsible Multi-Shelf Table With Cam-Driven Leg Folding
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Solution Overview
Problem
Existing folding tables with multiple working surfaces are cumbersome and inefficient in their design, as they often require complex mechanisms for height adjustment and storage, and lack innovative features for tool storage and versatility.
Innovation Solution
A collapsible table design featuring an upper panel, lower panel, and swingably articulated legs that transition between upright and stowed positions, with cam and follower arrangements, and latching mechanisms for easy conversion between open and closed positions, along with integrated tool storage and a vise system for added functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If complex mechanisms are used for height adjustment and storage in multi-surface folding tables, then the table functionality is improved, but the device complexity increases
Solution Approach 1:
The table is divided into separate functional modules: upper panel, lower panel, legs with articulation points, cam mechanisms, and latching arrangements. Each segment performs a specific function, allowing independent optimization and simplifying the overall system while maintaining versatility.
Solution Approach 2:
The table employs dynamic elements including swingably articulated legs that transition between upright and stowed positions, movable panels that shift between open and closed configurations, and operable latching arrangements that enable easy state changes. This dynamic design allows the table to adapt to different usage scenarios without requiring complex fixed mechanisms.
2Ease of operation
If cam and follower arrangements are used to shift legs to stowed positions, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The cam arrangements are pre-configured on the legs and lower panel to automatically guide the leg movement during the collapsing process. When the user initiates the collapse action, the pre-positioned cam mechanisms engage the followers and automatically propel the legs into the stowed position, reducing the effort required while maintaining a relatively simple mechanical structure.
Solution Approach 2:
The cam and follower mechanism acts as an intermediary between the user's collapsing action and the leg movement. The cam profile translates the user's input motion into the desired leg stowing motion, providing mechanical advantage and guidance without requiring the user to directly manipulate complex linkage systems.
3Reliability
If latching arrangements are used to retain the table in closed position, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The latching arrangement is designed to automatically engage and disengage based on the table's configuration state. When the table is collapsed, the latching mechanism self-activates to secure the panels in the closed position without requiring additional actuators or complex control systems. The mechanism uses the natural movements of the panels and legs to trigger latching and unlatching actions.
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
The design allows for efficient conversion between open and closed positions, supports multiple tool storage options, and enhances usability with a vise system, providing a versatile and space-saving solution for various applications.
Implementation Method 1
The arrangement may be a cam and follower arrangement. The cam may be in the form of an inclined surface associated with the lower panel and the follower may be in the form of a hooked member with a rounded end protruding from each leg.
Implementation Method 2
when the table is converted into the open position, the bottom panel is displaced by the force of gravity, thereby entailing shifting of the legs to their upright position and the supports to their erect positions
Implementation Method 3
The grooves may be tapered from top to bottom such that the pins are frictionally bound in the deployed position in order to make the table stronger.
Data Source
Figure 1
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Figure 2b
AI summary
A folding table comprises an upper panel, a lower panel, and a plurality of legs swingably articulated to the upper panel. The table is collapsible between an open position, in which the panels are separated, and a closed position, in which the panels are adjacent. Displacement of the lower panel into the open position entails deployment of the legs into a substantially upright position supporting the table in its open position.