Blow-Molded Folding Table with Pivot-Blocker Locking Mechanism
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Solution Overview
Problem
Folding tables with blow-molded table tops face challenges in maintaining the expanded-use position securely, as existing locking mechanisms are inadequate in preventing unintended folding.
Innovation Solution
The folding table incorporates a table top elevator with support and table-locker legs that can move between stowed, unlocked, and locked positions, using leg-slider guides and pivot blockers to securely hold the table top in the expanded-use position by blocking rotation between panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing locking mechanisms are used, then the device complexity is reduced, but the reliability of maintaining the expanded-use position deteriorates
Solution Approach 1:
The locking mechanism transitions from a static structure to a dynamic one where the table-locker legs can pivot between locked and unlocked positions. The leg-slider guides enable controlled movement while maintaining stability in the expanded-use position, resolving the contradiction by making the system adaptive rather than fixed.
Solution Approach 2:
The locking mechanism is divided into separate functional components: table-locker legs for positioning, leg-slider guides for controlling movement, and pivot blockers for preventing unintended folding. This segmentation allows each component to perform its specific function efficiently while maintaining overall system reliability.
2Ease of operation
If table-locker legs are allowed to pivot freely, then the ease of operation is improved, but the stability of the expanded-use position deteriorates
Solution Approach 1:
The leg-slider guides act as intermediary components between the table-locker legs and the table top. They control and guide the pivoting motion, allowing easy transitions while preventing unintended movement in the expanded-use position through the blocker bars that engage with guide slots.
Solution Approach 2:
The locking mechanism is designed to automatically engage and disengage through the pivoting motion of the table-locker legs. The blocker bars and guide slots work together to self-lock in the expanded-use position and self-unlock when pivoting occurs, eliminating the need for additional actuation mechanisms.
Data Source
AI summary
A folding table includes a table top provided with a table top elevator having legs. A hinge unit is coupled between panels of the table top to allow the table to be folded.