Stroller Foldable Support Assembly Nested Carriage Design
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Solution Overview
Problem
Full-sized strollers are cumbersome and heavy, occupying too much space when folded, while lightweight strollers sacrifice features for compactness, leading to the need for two separate strollers and increased expense.
Innovation Solution
A stroller design featuring a foldable support assembly with a connecting member, upper and lower support members, and a pivoting mechanism that allows the upper carriage to fold down onto the lower carriage, combined with a telescoping handle frame and rotating rear legs, enabling a compact and lightweight fold without compromising features or safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a full-sized stroller is used, then the stroller offers more room for the child, better ergonomics for parents, more functional features, and a more robust frame, but when folded, it occupies more space and is heavier
Solution Approach 1:
The upper carriage is nested within the lower carriage when folded, with the upper carriage folding down onto the lower carriage to achieve a compact configuration that reduces folded space while maintaining full functional features
Solution Approach 2:
The stroller is divided into an upper carriage and a lower carriage that can fold independently, allowing the upper carriage to be folded down onto the lower carriage for compact storage while preserving all functional features
2Adaptability or versatility
If a full-sized stroller is used, then the stroller offers more room for the child, better ergonomics for parents, more functional features, and a more robust frame, but it is heavier
Solution Approach 1:
The stroller frame is segmented into multiple components including upper and lower carriages with independent folding capabilities, allowing for optimized material distribution that reduces overall weight while maintaining structural robustness and functional features
Solution Approach 2:
The stroller employs dynamic folding mechanisms with pivotally connected support members that allow the structure to transition between extended and folded states, enabling weight reduction through optimized structural design that maintains strength only where needed
3Weight of moving object
If a lightweight stroller is used, then the stroller is lighter and more compact when folded, but features are sacrificed
Solution Approach 1:
The stroller design integrates multiple functions into a single lightweight structure, combining the capabilities of both full-sized and compact strollers through the foldable support assembly that enables full-size functionality when extended and compact storage when folded
Solution Approach 2:
The dynamic folding mechanism allows the stroller to transition between compact and extended states, providing full functional features when needed while achieving lightweight portability when folded, eliminating the need to choose between weight and features
4Volume of moving object
If a lightweight stroller is used, then the stroller is more compact when folded, but the frame is less robust
Solution Approach 1:
The frame is segmented into multiple support members including upper and lower support members that are pivotally connected, allowing each segment to be optimized for strength in its specific location while achieving overall compactness when folded
Solution Approach 2:
The nested folding configuration allows the upper carriage to fold down onto the lower carriage, maintaining frame robustness through the overlapping structural elements while achieving compact folded dimensions
Data Source
AI summary
A stroller includes a lower carriage, an upper carriage and a foldable support assembly. The upper carriage is pivotally connected to the lower carriage. The foldable support assembly comprises a connecting member, an upper support member and a lower support member. One end of the upper support member is pivotally connected to the upper carriage. One end of the lower support member is pivotally connected to the lower carriage. At least one of the other end of the upper support member and the other end of the lower support member is pivotally connected to the connecting member.