Foldable Child Seat Frame for Compact Stroller Folding
Find Innovative SolutionsGenerate Solutions
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 cannot handle uneven terrain.
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 relative to the seat mount, and a child tray that can pivot freely during folding, allowing the seat to fold within the main stroller frame's folding boundary.
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 compact transport
Solution Approach 1:
The child seat frame is divided into separate pivotable components (upper frame, lower frame, seat back) that can independently fold and lock into multiple positions. This segmentation allows the seat to achieve multiple seating modes while maintaining a compact folded size, resolving the contradiction between versatility and compactness.
Solution Approach 2:
The seat frame incorporates dynamic pivot joints and lockable mechanisms that allow the seat to transition between multiple configurations (upright, reclined, folded). These dynamic elements enable adaptability while the locked positions ensure stability during use, and the folded position achieves compact transport size.
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 on the child seat are reduced
Solution Approach 1:
The folding mechanism is extracted as a separate, dedicated system with its own lockable joints, independent of the seat feature mechanisms. This allows the seat to maintain full features (recline, tray, harness) while the folding system provides compact transport capability through a separate two-step folding process.
Solution Approach 2:
The seat frame incorporates dynamic pivot joints and lockable mechanisms that allow the seat to transition between multiple configurations (upright, reclined, folded). These dynamic elements enable adaptability while the locked positions ensure stability during use, and the folded position achieves compact transport size.
3Device complexity
If the stroller is designed with small wheels for compact folding, then the device complexity is reduced, but the ability to handle uneven terrain deteriorates
Solution Approach 1:
The wheel size and terrain handling capability are treated as independent local characteristics from the folding mechanism. The patent allows for larger wheels to be used in the folding stroller design, demonstrating that wheel size does not need to be compromised for compact folding capability.
Data Source
Figure 1
Figure 2
Figure 3
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, wherein 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.