Stroller Folding Mechanism with Biasing Latch for One-Handed Operation
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Solution Overview
Problem
Current foldable strollers require complex operations and lack efficient mechanisms for one-handed folding, compactness, and stable standing when folded, necessitating improved mechanisms for ease of use and space efficiency.
Innovation Solution
A stroller design featuring articulated seat frames with transverse pivots, biasing mechanisms, and latching systems that allow for coordinated folding and deployment, enabling one-handed operation and compact storage while maintaining stability in the folded position through strategically positioned swivel wheels and pivot joints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a latching mechanism is used to maintain the stroller frame in the deployed position, then the stroller remains stable during use, but the folding operation becomes more complex and requires multiple steps
Solution Approach 1:
The biasing mechanism automatically engages the latching mechanism to lock the frame in the deployed position without requiring user intervention. During folding, the biasing mechanism automatically disengages the latch, enabling one-handed operation while maintaining stability during use
Solution Approach 2:
The biasing mechanism pre-positions the seat frame and latching components in their proper engagement positions before folding is initiated. This preliminary positioning ensures that when the user releases the latch, the folding action proceeds smoothly without requiring complex coordination
2Ease of operation
If the seat frame is positioned higher in the deployed state, then user comfort is improved, but the folded height increases reducing compactness
Solution Approach 1:
The seat frame transitions from a high position during deployment for user comfort to a low position during folding for compactness. The downward pivot motion dynamically repositions the seat frame based on the operational state, achieving both comfort and compactness at different times
3Adaptability or versatility
If the swivel wheels are positioned forward, then the stroller is more maneuverable, but the folded width increases reducing compactness
Solution Approach 1:
The swivel wheels transition from a forward position during deployment for maneuverability to a rearward position during folding for compactness. The coordinated folding mechanism dynamically repositions the wheels based on the operational state, achieving both maneuverability and compactness
4Ease of operation
If a one-handed release mechanism is used, then ease of operation is improved, but the release mechanism complexity increases
Solution Approach 1:
The release mechanism is merged with the handle assembly, allowing the same component to serve both as the carrying handle and the folding release mechanism. This integration enables one-handed operation without adding separate complex release components
Solution Approach 2:
The handle assembly performs multiple functions: it serves as the carrying handle, the folding release mechanism, and the operation lever. This multi-functionality enables simplified one-handed operation while reducing the need for additional specialized components
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
Facilitates easy, one-handed folding and deployment of the stroller, ensuring compactness and stability in the folded state, enhancing user convenience and space efficiency while maintaining durability and ease of assembly.
Implementation Method 1
The latching mechanism further includes a biasing mechanism that is selectively applied based on frame and latch release mechanism position to urge the seat frame into a fully deployed position
Implementation Method 2
The pivot is configured to displace downwardly as the stroller frame is folded in order to position the seating elements attached to the seat frame away from the folding joints
Data Source
AI summary
A stroller frame having forwardly extending right and left side front supports, rearwardly extending right and left side rear supports, and upwardly extending right and left side handle supports moveable connected to permit movement of the frame between deployed and collapsed orientations, and a downwardly folding seat frame connected to the front and rear supports having right and left side fold mechanisms which are configured to lock the frame in the deployed configuration, apply a biasing force to fully deploy the seat frame during the unfolding movement, and isolate the biasing force while applying a folding force to the seat frame during the folding operation, actuation of the fold mechanisms based on frame orientation and position of a release handle.