Stroller Handle Frame Segmentation and Cable Biasing
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Solution Overview
Problem
Existing child strollers with large frame geometries and larger wheels are difficult to store and transport due to their size.
Innovation Solution
A child stroller apparatus that can fold into a compact form, featuring a rear leg frame, front leg frame, handle frame, and grip portion connected via pivotable segments with a latch and cable mechanism to facilitate easy folding and unfolding, allowing for secure locking and automatic biasing to reduce folding effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If large frame geometries and larger wheels are used to provide comfortable ride, then ride comfort is improved, but storage and transport difficulty increases
Solution Approach 1:
The handle frame is divided into multiple segments (first side segment, second side segment, third side segment) that can pivot relative to each other, allowing the stroller to be folded into a compact configuration for storage and transport while maintaining the large frame geometry for comfortable riding when unfolded
Solution Approach 2:
The handle frame transitions from a static large-geometry structure to a dynamic, collapsible structure through pivot connections and latch mechanisms, enabling easy folding and unfolding while preserving the comfortable ride characteristics when in use
2Adaptability or versatility
If pivotable connections are used to enable folding, then storage ease is improved, but structural complexity increases
Solution Approach 1:
The pivotable segments nest together when folded, with the second side segment pivoting relative to the first, and the third side segment pivoting relative to the second, creating a compact nested configuration that reduces overall size while maintaining structural integrity
Solution Approach 2:
The latch mechanism automatically engages when the handle frame is folded, and the cable automatically tensions to bias the grip portion toward the folded position, reducing the need for manual intervention and simplifying operation despite the presence of multiple moving parts
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables convenient operation, easy folding, and compact storage, enhancing transportability and storage efficiency while maintaining stability during use.
Implementation Method 1
a cable having two opposite ends respectively anchored with the grip portion and the third side segment and wrapping around a prominent portion provided on one of the first and second joining parts, the cable being tensioned so as to bias the grip portion to fold toward the third side segment
Data Source
AI summary
A child stroller apparatus includes a rear and a front leg frame respectively having a first and a second side segment, and a handle frame having a grip portion and a third side segment that are respectively connected fixedly with a first and a second joining part pivotally connected with each other, the second and third side segments being respectively connected pivotally with the first side segment. A latch is disposed between the first and second joining parts, and can lock the grip portion in an unfolded position relative to the third side segment. A cable has two opposite ends respectively anchored with the grip portion and the third side segment, wraps around a prominent portion provided on one of the first and second joining parts, and is tensioned to bias the grip portion to fold toward the third side segment.