Three-Pivot Infant Lounger Frame for Compact Stable Folding
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Solution Overview
Problem
Designing a folding frame for an infant recliner or lounger with three pivot points is challenging, particularly in achieving a balance between functionality and aesthetics, as it requires a precise arrangement of support members and hubs to facilitate easy folding and stability.
Innovation Solution
A three pivot point foldable frame is designed with specific configurations of hubs and support members, including first and second lower front hubs, upper front hubs, a lower rear hub, and an upper rear hub, with strategically positioned support members that pivotally engage each other at defined points, allowing for a compact and operating position while maintaining structural integrity and aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a three pivot point foldable frame is designed, then the aesthetic appeal and compactness are improved, but the design difficulty and structural complexity increase
Solution Approach 1:
The frame is divided into six distinct support members (first through sixth support members) that connect at three specific pivot points. This segmentation allows each member to be optimized for its specific function while maintaining the overall aesthetic goal of a three-pivot design, resolving the contradiction between simplified appearance and design complexity.
Solution Approach 2:
Multiple support members are combined to converge at three specific pivot points (first pivot connecting first and second support members, second pivot connecting third and fifth support members, third pivot connecting fourth and sixth support members). This merging creates the aesthetically pleasing three-pivot configuration while the underlying complexity is managed through the coordinated design of six support members.
2Volume of moving object
If the number of pivot points is reduced to three, then the compactness and visual appeal are improved, but the stability and ease of manufacture decrease
Solution Approach 1:
The frame utilizes six support members arranged in a dynamic configuration where pairs of members (first and second, third and fifth, fourth and sixth) pivot at three specific points. This dynamic arrangement allows the structure to fold compactly while maintaining stability through the coordinated movement and positioning of all six members during operation.
3Shape
If six support members are used with three pivot points, then the aesthetic appeal and compactness are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The design applies local quality by concentrating the pivot connections at three specific locations rather than distributing them throughout the structure. Each pivot point serves a specific function: the first pivot connects the first and second support members, the second pivot connects the third and fifth support members, and the third pivot connects the fourth and sixth support members. This localized approach to pivot placement simplifies the overall manufacturing process while maintaining aesthetic appeal.
Data Source
AI summary
A three pivot point foldable frame has first and second lower front hubs, first and second upper front hubs, a lower rear hub, and an upper rear hub. Six support members interconnect the hubs. First and second support members pivotally engage each other at a first pivot. Third and fifth support members pivotally engage each other at a second pivot. Fourth and sixth support members pivotally engage each other at a third pivot. A child seat or bedding having a receptacle formed therein is engaged to the upper hubs. The frame folds out to an operating position and in to a compact position.