Baby Stroller Frame with Single-Link Folding Mechanism
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Solution Overview
Problem
Conventional baby stroller folding mechanisms are structurally complex, cumbersome to operate, and costly to manufacture, with multi-link mechanisms being overly complex and multi-segment mechanisms requiring multiple locking devices for folding.
Innovation Solution
A structurally simple baby stroller frame with a base frame and push rod assembly, featuring a support linkage element with a locking mechanism for easy unfolding and a linkage unlocking assembly for simple folding, reducing the number of components and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a multi-link folding mechanism is used, then the stroller frame can achieve folding functionality, but the structure becomes complex and cumbersome to operate
Solution Approach 1:
The patent extracts and eliminates the complex multi-link mechanism from the folding system, replacing it with a simplified single-link design where the support linkage element directly connects to the base frame through a connecting assembly, removing unnecessary intermediate links and reducing structural complexity
Solution Approach 2:
The connecting assembly serves multiple functions: it provides rotational connection between the support linkage element and base frame, enables sliding movement during folding, and integrates the locking mechanism interface, consolidating multiple functions into a single component to reduce overall system complexity
2Ease of operation
If a multi-segment folding mechanism is employed, then the stroller frame can achieve folding functionality, but multiple locking devices are required making operation cumbersome
Solution Approach 1:
The patent merges multiple locking functions into a single locking mechanism that secures the support linkage element to the base frame through the connecting assembly. This single locking device replaces what would traditionally require multiple locking devices in a multi-segment mechanism, simplifying the folding operation to a single action
Solution Approach 2:
The locking mechanism is designed to perform multiple functions: it locks the support linkage element in the extended position, enables controlled folding when unlocked, and works with the single-link mechanism to achieve compact folding. This multi-functional design eliminates the need for separate locking devices at each joint
3Ease of manufacture
If a complex folding mechanism is used, then the stroller frame can achieve folding functionality, but manufacturing costs increase
Solution Approach 1:
By extracting and removing the complex multi-link and multi-segment mechanisms, the patent significantly reduces the number of components that need to be manufactured, assembled, and quality-checked. The simplified single-link design with one connecting assembly and one locking mechanism dramatically reduces manufacturing complexity and cost
Solution Approach 2:
The patent segments the folding function into a minimal essential configuration: a single support linkage element, one connecting assembly with integrated locking, and one unlocking assembly. This segmentation approach identifies and retains only the essential elements needed for folding functionality, eliminating redundant components and reducing manufacturing burden
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 allows for easy operation, convenient folding and unfolding, and a compact overall volume after folding, enhancing user convenience, reducing manufacturing costs, and improving product competitiveness.
Implementation Method 1
A reset elastic element is arranged between the frame locking part and the base frame to elastically maintain the locking catch notch in engagement with the connection pin
Implementation Method 2
The connection pin is slidably and rotatably positioned within the connection sliding groove
Data Source
AI summary
A baby stroller frame includes a base frame and a push rod assembly. A lower end of the pushrod assembly is rotatably connected to the base frame. A support linkage element is positioned between the pushrod assembly and the base frame, with its upper end rotatably connected to the pushrod assembly and its lower end slidably and rotatably connected to the base frame via a connecting assembly. The baby stroller frame also includes a locking mechanism for securing the lower end of the support linkage element with respect to the base frame when the baby stroller frame is in its unfolded state. A linkage unlocking assembly is provided to unlock the locking mechanism.