Collapsible Stroller Frame Folding for Compact Multi-Seat Transport
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Solution Overview
Problem
Existing strollers that offer multiple seating modes for children do not fold to a compact size for easy transportation, and those that can fold compactly often lack full features or have small wheels that hinder handling on uneven terrain.
Innovation Solution
A compact collapsible stroller design featuring a main stroller frame with a child seat that can be attached in multiple configurations, folding in two steps with the child seat frame pivoting vertically and the main frame components folding within a defined boundary to minimize space, including a handle, rear and front leg portions, and a carrying basket that rotates for optimal storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the stroller is designed to offer multiple seating modes for the child, then the adaptability is improved, but the device complexity and folded size increase, making it difficult to transport
Solution Approach 1:
The stroller is divided into separable components: a main stroller frame and a child seat that can be attached and detached. The child seat includes an upper frame and lower frame that can fold independently relative to each other, allowing complex functionality to be achieved through modular segments rather than a monolithic complex structure.
Solution Approach 2:
The child seat frame is designed to nest within or alongside the main stroller frame when folded. The upper and lower seat frames can be positioned vertically relative to the seat mount, allowing compact nesting that reduces overall folded dimensions while maintaining multiple seating configuration capabilities.
2Ease of operation
If the stroller is designed to fold to a compact size, then the ease of transportation is improved, but the wheel size must be reduced, worsening the handling on uneven terrain
Solution Approach 1:
The stroller employs dynamic folding mechanisms with multiple pivot points that allow the frame components to collapse into a compact configuration for transportation. The pivotal connections enable smooth transitions between extended and folded states, maintaining structural integrity while achieving compact dimensions for easy storage and transport.
3Volume of moving object
If the child seat is folded separately from the main stroller frame, then the folded size is reduced, but the device complexity increases
Solution Approach 1:
The child seat is segmented into an upper frame and lower frame that can move independently relative to each other and to the main stroller frame. This segmentation allows the child seat to fold separately, reducing the overall folded volume while the modular nature simplifies the folding mechanism compared to a fully integrated design.
Solution Approach 2:
The child seat folding mechanism utilizes vertical movement of the upper and lower frames relative to the seat mount, adding a vertical dimension to the folding action. This dimensional approach allows compact folding without requiring complex lateral folding mechanisms, achieving volume reduction through straightforward vertical collapse.
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
The stroller achieves a compact folded size while maintaining functionality, allowing easy transportation and handling on uneven terrain, with the child seat and main frame components folding efficiently within a defined boundary.
Implementation Method 1
a rear leg portion and a front leg portion pivotally coupled to the central frame hub
Implementation Method 2
the seat frame is released to pivot around the seat mount so that both the upper and lower seat frames hang relatively vertical with respect to the seat mount
Implementation Method 3
the adapter portion approaches rear wheels when the compact collapsible stroller is transformed from the unfolded state to the folded state
Data Source
AI summary
Disclosed is a compact foldable stroller, which comprises a main stroller frame. The main stroller frame comprises a central frame hub, and a handle part, a rear leg part and a front leg part that can separately be pivotally coupled to the central frame hub. The main stroller frame further comprises a fitting part attached to the handle part. The compact foldable stroller has an unfolded state for use and a folded state for storage. When the compact foldable stroller changes from the unfolded state to the folded state, the fitting part approaches a rear wheel set. The main stroller frame can be compactly folded by means of a series of pivot points, which may accept child seats of various configurations during installation. The seat can be folded in a manner suitable to the folding boundary size of the main stroller frame, thereby keeping the folding size of the stroller unit minimal.