Four-Wheel Walker Asymmetric Wheel Configuration for Stability and Maneuverability
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Solution Overview
Problem
Existing four-wheel walkers lack adaptability to different physical abilities and physiques of elderly users, leading to instability and difficulty in movement, especially on uneven terrain and uphill/downhill surfaces.
Innovation Solution
A four-wheel walker design featuring larger front wheels and smaller rear wheels, with the rear wheels being swivel wheels for enhanced maneuverability and stability, and the option for rear wheels to be removable or fixed, providing a balance between stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional four-wheel walkers use wheels of equal size, then the structure is simple and easy to manufacture, but the walker lacks adaptability to different physical abilities and physiques of elderly users, leading to instability and difficulty in movement
Solution Approach 1:
The patent applies asymmetry by configuring the walker with front wheels of a first size and rear wheels of a second size, where the sizes are different. This asymmetric wheel configuration allows the walker to adapt to different physical abilities and physiques of elderly users, providing both stability and maneuverability that equal-sized wheels cannot achieve.
2Stability of the object's composition
If large wheels are used for all four wheels, then the walker provides good stability, but it becomes difficult to maneuver and turn easily
Solution Approach 1:
The patent applies local quality by assigning different wheel sizes to different locations of the walker. The front wheels are configured with a first size optimized for stability, while the rear wheels are configured with a second size optimized for maneuverability. This location-specific differentiation allows the walker to simultaneously achieve both stability and ease of turning.
3Ease of operation
If small wheels are used for all four wheels, then the walker is easy to maneuver, but it becomes unstable especially on uneven terrain and uphill/downhill surfaces
Solution Approach 1:
The patent applies local quality by assigning different wheel sizes to different locations of the walker. The front wheels are configured with a first size optimized for stability on uneven terrain, while the rear wheels are configured with a second size optimized for maneuverability. This location-specific differentiation allows the walker to simultaneously achieve both stability and ease of maneuvering.
4Adaptability or versatility
If the walker is designed to adapt to different physiques and abilities, then user experience is improved, but the design complexity and number of components increases
Solution Approach 1:
The patent applies asymmetry by configuring the walker with front wheels of a first size and rear wheels of a second size, where the sizes are different. This asymmetric wheel configuration allows the walker to adapt to different physical abilities and physiques of elderly users, providing both stability and maneuverability that equal-sized wheels cannot achieve.
Data Source
AI summary
A four-wheel walker with two equal-sized front wheels larger than the two equal-sized rear wheels are provided. In one embodiment, the two large-sized front wheels are fixed wheels and the two small-sized rear wheels are swivel wheels. In one embodiment, the radius R1 of the two equal-sized front wheels and the radius R2 of the two equal-sized rear wheels are optimized for balance. In one embodiment, the two rear wheels are removable. In yet another embodiment, In yet another embodiment, the walker is foldable. In one embodiment, the two rear wheels are smaller than the two front wheels, and wherein the two front wheels are fix wheel, and wherein each of the two rear wheels are mounted on a corresponding castor, and where each castor is attached to the end of corresponding rear leg. In one embodiment, the castors are swivel castors.