Folding Stroller Bracket Assembly for Compact Stable Folding
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Solution Overview
Problem
Existing strollers have complex folding mechanisms that are cumbersome, prone to finger pinching, and result in a large volume when folded, making them inconvenient for storage and transportation, and lack stability in the folded state.
Innovation Solution
A folding stroller with a simple framework structure featuring interconnected bracket and support frame assemblies, including limiting members, locking mechanisms, and movable casters, allowing for easy unfolding and folding with enhanced stability and reduced volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex folding mechanism with many rods is used, then the stroller can achieve folding functionality, but the folding operation becomes cumbersome and the structure becomes complex
Solution Approach 1:
The folding mechanism is divided into independent bracket assemblies (front bracket assembly, rear bracket assembly, lower bracket assembly) that can fold and unfold independently through simple rotatable connections, eliminating the need for complex interconnected rods while maintaining folding functionality
Solution Approach 2:
Instead of using a traditional complex rod-based folding mechanism, the patent inverts the approach by using rigid bracket assemblies with simple rotatable joints at key positions, allowing the structure to fold through the rotation of these joints rather than through complex rod articulations
2Adaptability or versatility
If a traditional folding mechanism is used, then the stroller can be folded, but the folded volume remains large making it inconvenient to carry
Solution Approach 1:
The stroller frame is segmented into multiple bracket assemblies that can be folded independently, allowing the structure to collapse into a more compact configuration with smaller overall volume compared to traditional rod-based mechanisms
Solution Approach 2:
The bracket assemblies are designed to nest together when folded, with the front and rear bracket assemblies collapsing toward the center and the lower bracket assembly providing a compact base, minimizing the folded volume for easier carrying
3Adaptability or versatility
If a complex folding mechanism with many rods is used, then the stroller achieves folding functionality, but the folded structure becomes unstable and easily deforms
Solution Approach 1:
Instead of relying on complex rod mechanisms that deform easily, the patent uses rigid bracket assemblies with strategically placed rotatable connections that maintain structural integrity during folding and provide stable locking positions in both folded and unfolded states
Solution Approach 2:
The bracket assemblies are designed with predetermined folding paths and rotation points that ensure stable configuration during folding, preventing deformation by guiding the folding motion along stable geometric paths
4Adaptability or versatility
If a traditional folding mechanism is used, then the stroller can be folded, but finger pinching occurs during the folding operation
Solution Approach 1:
The folding mechanism is segmented into large bracket assemblies with simple rotatable connections, eliminating the narrow gaps and complex articulations in traditional rod mechanisms where fingers can be pinched during folding operations
Solution Approach 2:
The design prioritizes safety by using simple, robust bracket connections that minimize the risk of pinching, accepting a slightly simpler mechanism in exchange for eliminating the harmful pinching effect
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 stroller provides a stable, compact folded form that is easy to store and transport, with improved safety and convenience in use, featuring a simple folding mechanism that minimizes finger pinching and ensures structural integrity.
Implementation Method 1
a first end of the first lower bracket unit is rotatably connected to a lower end of the front bracket assembly; a first end of the second lower bracket unit is rotatably connected to a lower end of the rear bracket assembly
Implementation Method 2
a first locking member is arranged in the second end of the second lower bracket unit; a locking end of the first locking member is threaded out of a side wall of the second end of the second lower bracket unit; the first limiting member is provided with a first locking hole; and when the framework is in the unfolded state, the locking end of the first locking member is inserted into the first locking hole
Implementation Method 3
the first limiting member resists against the second lower bracket unit; and when the framework is in the unfolded state, the first limiting member resists against the second lower bracket unit
Data Source
AI summary
A folding stroller includes a framework and wheels mounted at a bottom of the framework. The framework has a folded state and an unfolded state. The frame includes front and rear bracket assemblies, a lower bracket assembly, and a support frame assembly. Front and rear connecting rod units are respectively arranged at lower ends of the front and rear bracket assemblies. The lower bracket assembly includes first and second lower bracket units. First ends of the first and second lower bracket units are respectively rotatably connected to a lower end of the front bracket assembly and a lower end of the rear bracket assembly. Second ends of the first and second lower bracket units are rotatably connected. The support frame assembly includes first and second support frame units and first and second rotating rod units.