Corner Latching Play Yard With Central Hub Folding Lock
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Solution Overview
Problem
Foldable play yards and cribs are cumbersome to open and fold due to complex mechanisms, making them difficult to handle, especially when attending to young children, and lack a robust and easily hidden latching mechanism for secure operation.
Innovation Solution
A foldable structure with a centrally-located hub assembly that operates in a three-phase manner to open and fold the enclosure smoothly, using a single interface where pushing down on the hub opens the structure and pulling up folds it, with latches at the upper corners locking the enclosure in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex mechanism with multiple latching points and diagonal braces is used, then the play yard achieves structural stability and secure locking, but the device becomes cumbersome to open and fold, increasing operational difficulty
Solution Approach 1:
The patent combines multiple latching functions into a single centralized latching mechanism located at the bottom center of the play yard. This single mechanism controls all four corners simultaneously, eliminating the need for separate latching operations at each corner while maintaining secure locking of the entire structure.
Solution Approach 2:
The patent removes unnecessary structural elements such as diagonal braces from the design. By extracting these redundant components, the play yard achieves easier operation and reduced weight while maintaining structural integrity through the simplified centralized latching system that allows smooth opening and folding motion.
2Reliability
If multiple separate latching mechanisms are provided at each corner, then secure locking is achieved, but the number of操作步骤 increases, making the device more complex to operate
Solution Approach 1:
The patent integrates four corner latching functions into one centralized latching mechanism. This single mechanism uses a cam-driven system that simultaneously engages or disengages all four corners through interconnected links, reducing the number of independent mechanisms from four to one while maintaining locking security at each corner.
Solution Approach 2:
The centralized latching mechanism performs multiple functions simultaneously: it locks and unlocks all four corners, controls the folding motion, and provides structural support. This multi-functional design eliminates the need for separate latching mechanisms at each corner, simplifying the overall device complexity.
3Strength
If diagonal braces and multiple side members are added to the lower structure, then structural robustness is improved, but the weight of the device increases
Solution Approach 1:
The patent eliminates diagonal braces from the lower structure, removing unnecessary weight-bearing components. The structural robustness previously provided by diagonal braces is replaced by the geometric arrangement of the four legs and the centralized latching mechanism, achieving the same structural support with less material and reduced weight.
Solution Approach 2:
The patent divides the lower structure into four independent legs that pivot independently at the centralized latching mechanism. This segmentation allows each leg to be optimized for minimal weight while the collective arrangement provides structural robustness, eliminating the need for heavy diagonal bracing.
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.