Collapsible Playpen Linkage Layout for Sequence-Free Folding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional playpen frames have rigid geometries and specific folding/unfolding sequences, making them inconvenient and inflexible for use.
Innovation Solution
A collapsible playpen design featuring an upper frame assembly with coupling brackets and leg linkages that allow for flexible folding and unfolding, eliminating the need for specific latch engagement sequences and providing a wider unobstructed enclosure area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional playpen frames use fixed geometry and specific folding sequences with multiple latches, then structural stability is maintained, but ease of operation deteriorates due to complex folding/unfolding procedures
Solution Approach 1:
The patent merges multiple latch functions into a single central hub mechanism. The hub integrates the locking and unlocking functions for all four legs into one centralized location, allowing simultaneous control of all leg linkages through a single operational point rather than requiring sequential manipulation of multiple distributed latches
Solution Approach 2:
The central hub serves multiple functions: it acts as the pivot point for all leg linkages, the locking mechanism for stabilizing the playpen, and the control center for both folding and unfolding operations. This multi-functional design eliminates the need for separate latches at each corner, reducing overall device complexity while maintaining operational stability
2Productivity
If traditional playpen frames require specific latch engagement sequences, then structural stability during transformation is ensured, but productivity deteriorates due to time-consuming folding and unfolding processes
Solution Approach 1:
The leg linkages are pre-configured with pivot connections that naturally guide the folding and unfolding motion paths. The geometric arrangement of linkages and pivot points is designed in advance to enable smooth, predictable transformation sequences without requiring complex user intervention or sequential latch manipulation
Solution Approach 2:
By consolidating all latch functions into the central hub, the patent enables simultaneous engagement or disengagement of all four legs through a single operational action. This merging eliminates the sequential time loss associated with manipulating multiple latches in a specific order, significantly reducing the total time required for setup and breakdown
3Reliability
If traditional playpen frames use four separate latches at each corner, then reliability of structural stability is improved, but device complexity increases due to multiple latch mechanisms
Solution Approach 1:
The patent merges the four separate latch mechanisms into a single central hub that controls all four legs simultaneously. This consolidation reduces the number of moving parts and potential failure points while maintaining structural stability through the centralized control mechanism that ensures all legs are either locked or unlocked together
Solution Approach 2:
The central hub acts as an intermediary mechanism that transmits the locking/unlocking action uniformly to all four leg linkages. This intermediary design ensures consistent force distribution and synchronized operation across all legs, maintaining structural reliability while eliminating the need for multiple independent latch mechanisms at each corner
Data Source
AI summary
A collapsible playpen includes an upper frame assembly, four standing legs and a bottom linkage assembly. The upper frame assembly includes a first and a second side opposite to each other that respectively have a first and a second coupling bracket. The four standing legs have lower end portions respectively provided a plurality of foot members. A first and a second standing leg are respectively coupled with the upper frame assembly via a first and a second leg linkage that are assembled with the first coupling bracket, and a third and a fourth standing leg are respectively coupled with the upper frame assembly via a third and a fourth leg linkage that are assembled with the second coupling bracket. The bottom linkage assembly is connected with the foot members of the four standing legs.