Foldable Walker Arm With Nested Guide And Rotational Tube
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Solution Overview
Problem
Conventional walkers lack an efficient mechanism for height adjustment and folding, which limits user convenience and storage space.
Innovation Solution
A foldable arm mechanism featuring a lower vertical tube with a slot, an inner guide slideably inserted into the tube, an upper vertical tube with locking holes, and an outer tube allowing for vertical and rotational movement, secured by nuts, threaded rods, and bushings, enabling adjustable height and easy folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional walkers use fixed arm structures, then structural simplicity is maintained, but height adjustment and folding capability are lost
Solution Approach 1:
The patent implements a nested tube structure where the outer tube contains the inner tube, and the inner guide is slideably inserted into the inner tube. This nesting arrangement allows multiple functional components to be housed within each other, enabling height adjustment and folding mechanisms without significantly increasing the overall device footprint or visual complexity.
Solution Approach 2:
The patent transforms the static fixed arm structure into a dynamic adjustable structure by introducing slideable inner guides, lockable mechanisms, and rotational joints. The inner guide can move vertically within the inner tube, and the entire arm assembly can fold at the joint between outer and inner tubes, providing adaptability while maintaining structural integrity through controlled movement.
2Volume of moving object
If conventional walkers lack folding mechanism, then structural integrity is maintained, but storage space requirements increase
Solution Approach 1:
The patent divides the arm structure into separable segments: the outer tube, inner tube, and inner guide as distinct components that can move relative to each other. The joint mechanism allows the arm to fold into compact configurations while maintaining structural integrity through properly designed connection points and locking mechanisms.
Solution Approach 2:
The folding capability is achieved through dynamic joints that allow the arm to transition between extended and folded states. The slideable inner guide and rotational joint between tubes enable the structure to adapt its configuration, reducing storage volume while maintaining strength when deployed through controlled mechanical movement.
3Manufacturing precision
If conventional walkers use simple tube structures, then manufacturing ease is maintained, but adjustment precision is limited
Solution Approach 1:
The patent replaces simple mechanical tube connections with a more sophisticated system involving slideable guides with slots, threaded rods for positioning, and lockable mechanisms. These mechanical elements work together to provide precise height adjustment by allowing controlled movement and secure locking at desired positions, transforming a simple mechanical structure into a precision adjustment system.
Data Source
AI summary
An adjustable height foldable arm comprises a lower vertical tube, an inner guide slideably inserted into the lower vertical tube fitting into the lower vertical slot, an inner guide slot, an inner guide hole, a lower vertical tube hole through the lower vertical tube, a first rod inserted through the lower vertical tube hole and the inner guide hole to secure the inner guide in the lower vertical slot, an upper vertical tube with an upper vertical slot in which the inner guide is slideably inserted, an outer tube providing vertical height adjustment and rotational movement, an outer vertical slot on both sides of the outer tube allowing vertical movement with respect to the rod, and two outer horizontal slots on the outer tube allowing for positioned rotational movement of the outer tube when the upper vertical tube is at its lowest vertical displacement.