Corner Latching Play Yard With One-Step Hub Folding
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Solution Overview
Problem
Foldable play yards and cribs are cumbersome to open and fold, requiring clumsy operating mechanisms and involving complex structures that are heavy and difficult to handle, especially when attention is needed for young children.
Innovation Solution
A foldable structure with a centrally-located hub assembly that allows for a one-step process to open or fold the enclosure, utilizing a three-phase mechanism where pushing down on the hub opens the structure, pulling up folds it, and latches at the upper corners lock it in place, simplifying the operation and reducing effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional operating mechanisms are used to open and fold the play yard, then the structure can be opened and folded, but the operation is cumbersome and requires multiple steps
Solution Approach 1:
The patent combines multiple operating functions (opening, folding, and latching) into a single integrated hub assembly. This central hub connects to all four legs and controls the entire deployment sequence through one unified mechanism, eliminating the need for separate operating mechanisms at different locations.
Solution Approach 2:
The latching mechanisms are pre-positioned and automatically engaged during the opening sequence. As the legs spread apart and the play yard deploys, the latches automatically lock into place without requiring separate manual intervention, preparing the structure for stable use in advance.
2Strength
If diagonal braces and multiple side members are added to strengthen the lower structure, then the play yard becomes more robust, but the weight and complexity increase
Solution Approach 1:
The patent employs an asymmetric X-bracing configuration where diagonal braces are strategically positioned only where structurally necessary, rather than symmetrically throughout. This asymmetric placement provides maximum structural reinforcement with minimum material, optimizing the strength-to-weight ratio.
Solution Approach 2:
The lower structure is divided into modular segments with diagonal braces forming X-patterns at critical connection points. This segmentation allows the structure to gain strength at specific load-bearing locations without adding unnecessary weight to the entire play yard.
3Reliability
If a robust latching mechanism is provided to lock the play yard in the open position, then the structure is more secure, but the mechanism becomes more visible and complex
Solution Approach 1:
The latching mechanisms are nested within the hub assembly structure itself. The latches are integrated into the central hub and fold away or nest within the hub housing when not in use, making them invisible or minimally visible from the exterior while maintaining full functionality.
Solution Approach 2:
The latching mechanism operates automatically as part of the opening sequence without requiring separate manual control. The mechanical motion of deploying the legs automatically actuates the latches to engage or disengage, making the system self-regulating and reducing the need for complex control interfaces.
Data Source
AI summary
A foldable structure includes: an upper assembly forming an upper portion of the structure; a base assembly forming a lower portion of the structure; a centrally-located hub assembly operatively connected to the base assembly; and a post extending from each corner of the upper assembly to a corner of the base assembly. The upper assembly includes a plurality of arm assemblies. At least one latching mechanism is provided at each corner of the upper assembly extending from an upper portion of at least one of the posts to a portion of at least one of the arm assemblies.