Collapsible Child Seat Frame for Compact Stroller Folding
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Solution Overview
Problem
Current strollers that offer multiple seating modes for children do not fold to a compact size that is easy to transport, and strollers that can fold to a compact size often lack full features on the child seat or main stroller frame, with small wheels that do not handle uneven terrain well.
Innovation Solution
A compact collapsible stroller design featuring a main stroller frame and a child seat frame that can be attached in multiple configurations, allowing the stroller to fold in two steps with the child seat folding separately from the main frame. The child seat frame includes a seat mount, upper and lower frames that pivot, and a child tray that can pivot relative to the seat frame during folding.
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 increases and the folding size becomes too large for easy transport
Solution Approach 1:
The child seat frame is divided into separate pivotable components (upper frame and lower frame) that can fold independently relative to each other and the seat mount, allowing complex seating configurations to be achieved through modular, segmented movements rather than a single complex mechanism
Solution Approach 2:
The frame incorporates multiple pivot points and latch portions that allow dynamic reconfiguration between different seating modes (upright, reclined, flat positions) while maintaining structural integrity, enabling the seat to adapt its configuration without requiring a completely different structure for each mode
2Ease of operation
If the stroller is designed to fold to a compact size, then the ease of operation for transport is improved, but the device complexity increases and features are compromised
Solution Approach 1:
The frame is segmented into distinct pivotable sections with individual latch portions (first latch portion on seat mount, second latch portion on lower frame, third latch portion on upper frame) that can be independently engaged and disengaged, allowing the folding action to be broken down into manageable steps that are easy to operate
Solution Approach 2:
The latch portions are pre-positioned along the folding path of each frame section, so that as the frame is folded, the latches automatically engage at the appropriate moments to secure each section in its folded position, eliminating the need for manual intervention during the folding process
3Volume of moving object
If the stroller is designed to fold to a compact size, then the volume is reduced for easy transport, but the reliability decreases due to small wheels that cannot handle uneven terrain
Solution Approach 1:
The frame structure is segmented with multiple pivot points and latch portions that allow the stroller to fold into a compact configuration for transport while maintaining the structural integrity and full-size wheel assembly when deployed, separating the folding function from the wheel size function
Solution Approach 2:
The dynamic folding mechanism with multiple latch portions allows the frame to transition between compact and full-size configurations while maintaining structural rigidity in both states, ensuring that the wheels retain their full size and capability to handle uneven terrain when the stroller is in use
Data Source
AI summary
Disclosed are a child seat frame and a compact foldable stroller. The child seat frame comprises a seat mounting part, a lower frame body, and an upper frame body. The upper frame body is provided with an upper frame body lock which can be actuated to lock and disengage from a second latch part, and the upper frame body is pivotable relative to a lower seat frame hub when the upper frame body lock is disengaged from the lower seat frame hub; and when the lower frame body pivots relative to the seat mounting part, the upper frame body lock locks over the second latch part. The child seat frame can be folded in a main suitable for the folding boundary dimensions of a main stroller frame, thereby maintaining the folding dimensions of a stroller unit to a minimum.