Child Stroller Linkage for Smooth Folding and Structural Integrity
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Solution Overview
Problem
Existing child strollers face challenges in providing a smooth and convenient folding and unfolding mechanism, which is crucial for convenient storage and transport.
Innovation Solution
A child stroller apparatus with a first leg frame, a second leg frame, a handle frame, a seat assembly, and a linkage system including a support bar, a slider, and a frame link, which allows for smooth folding and unfolding through a pivotally connected structure that includes a backrest locking mechanism and a frame locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional frame construction is used, then the stroller can be folded, but the folding and unfolding operation is not convenient
Solution Approach 1:
The patent applies dynamics by making the frame segments movable relative to each other through pivot connections. The first, second, and third side segments are connected via pivot joints that allow smooth folding and unfolding motions, transforming the static frame into a dynamic structure that adapts between extended and folded states
Solution Approach 2:
The frame is divided into multiple separable segments (first side segment, second side segment, third side segment) that can be independently positioned. This segmentation allows each segment to move relative to others during folding, improving operational convenience while maintaining overall structural integrity through controlled articulation
2Volume of moving object
If the stroller is folded for storage, then the volume is reduced, but the structural integrity may be compromised
Solution Approach 1:
The dynamic pivot connections maintain structural integrity during folding by providing controlled movement paths. The articulations are designed to preserve the relative positions and orientations of frame segments throughout the folding transition, ensuring the structure remains stable and intact in both extended and folded configurations
Solution Approach 2:
The patent incorporates locking mechanisms that engage beforehand to secure the frame segments in their proper relative positions during folding. These mechanisms prevent unintended movement or collapse, cushioning against structural instability while the volume is being reduced
Data Source
AI summary
A child stroller apparatus includes a first leg frame having a first side segment, a second leg frame having a second side segment, a handle frame having a third side segment, a seat assembly coupled to the first side segment, and a linkage including a support bar, a slider and a frame link. The third side segment is respectively connected pivotally to the first side segment and the second side segment, wherein the third side segment is pivotally connected to the first side segment via an articulation. The support bar is respectively connected pivotally to the first side segment and the second side segment, the slider is coupled to the seat assembly and is slidably connected to the support bar, and the frame link is pivotally connected to the slider, the slider sliding along the support bar during folding and unfolding of the child stroller apparatus.