Stroller Frame Locking Mechanism for One-Handed Folding
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Solution Overview
Problem
Current strollers have complex structures due to multiple linkage bars, leading to safety concerns and complicated folding mechanisms, resulting in poor user experience.
Innovation Solution
A stroller design featuring a simple frame structure with a frame locking mechanism that allows the seat to pivot and unlock the stroller frame for easy folding, using a sliding sleeve and engaging assembly to facilitate one-handed folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a linkage assembly with multiple pin-jointed bars is used to form the stroller frame, then the stroller can achieve foldability and structural flexibility, but the structure becomes complicated and safety deteriorates due to the need for multiple structural constraints
Solution Approach 1:
The patent extracts and removes the complex linkage assembly with multiple pin-jointed bars from the stroller frame design. Instead, it employs a simplified frame structure with a locking mechanism that achieves foldability without requiring numerous linkage bars and structural constraints, thereby reducing overall structural complexity while maintaining the essential foldable functionality
Solution Approach 2:
The patent segments the folding function from the overall frame structure by introducing a dedicated locking mechanism that can be independently controlled. This allows the frame to be divided into fixed and movable portions that can be locked or unlocked as needed, enabling foldability without requiring the entire frame to be composed of complex linkages
2Reliability
If multiple structural constraints are added to the linkage assembly to improve safety, then the stroller frame becomes more secure, but the folding operation becomes more complicated and difficult to perform smoothly
Solution Approach 1:
The patent merges the safety locking function with the folding operation by designing a locking mechanism that integrates both functions. The locking mechanism includes a locking member that can be engaged or disengaged with a single operation, simultaneously ensuring frame stability during use and enabling smooth folding when needed, without requiring separate constraints for each function
Solution Approach 2:
The locking mechanism is designed to be self-locking during normal use, automatically maintaining frame stability without requiring continuous user intervention. When folding is needed, a single operation on the locking member releases the lock and enables folding, making the system self-regulating between locked (safe) and unlocked (foldable) states
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 design simplifies the stroller structure and enables convenient, quick, and smooth folding, improving user satisfaction by reducing the complexity of the folding process.
Implementation Method 1
The seat is pivotally connected to the stroller frame and is connected to the frame locking mechanism. When the seat pivots, the seat drives the frame locking mechanism to unlock the stroller frame
Implementation Method 2
The frame locking mechanism includes a sliding sleeve. The sliding sleeve is slidable along a lengthwise direction of the rear leg
Data Source
AI summary
A stroller includes a stroller frame, a frame locking mechanism, and a seat. The stroller frame can be folded or unfolded. The frame locking mechanism locks the stroller frame to be unfolded. The seat is pivotally connected to the stroller frame and is connected to the frame locking mechanism. Therein, when the seat pivots, the seat drives the frame locking mechanism to unlock the stroller frame so as to fold the stroller frame. The stroller is structurally simple and is convenient to be folded.