Foldable Walker Mounting Assembly and Brake Mechanism
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Solution Overview
Problem
Existing foldable walkers face issues with robustness, manufacturing costs, bulky designs, entanglement risks, and complex braking mechanisms, which compromise safety and usability, especially for elderly users with limited dexterity.
Innovation Solution
A foldable walker design featuring a simplified mounting assembly for the front wheel fork, a self-adjusting brake rod mechanism, and a compact brake pad assembly that reduces parts and complexity, enhancing safety and ease of use while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frames are made with many parts to accommodate variety of body shapes, then adaptability is improved, but device complexity and manufacturing costs increase
Solution Approach 1:
The frame uses universal joints and telescoping tubes that can accommodate multiple configurations and body shapes without requiring numerous different parts. The telescoping tubes with thumb screw adjustments allow height and angle variations to fit different users, while the universal joint at the front wheel fork enables omnidirectional movement adaptability.
Solution Approach 2:
The frame incorporates dynamic elements including telescoping tubes that can extend and retract, and a universal joint that allows the front wheel fork to rotate freely in multiple directions. These dynamic features enable the frame to adapt to various body shapes and usage scenarios without adding numerous fixed parts.
2Ease of operation
If brake pad mechanisms are exposed for user adjustment, then ease of operation is improved, but reliability deteriorates due to entanglement and wear
Solution Approach 1:
A brake housing is introduced as an intermediary structure that encloses the brake pad mechanism. The housing includes a removable cover that allows users to access and adjust the brake pad when needed, while keeping the mechanism protected during normal use. This mediator structure prevents entanglement with clothing while maintaining adjustability through the removable cover feature.
3Stability of the object's composition
If telescoping tubes require thumb screw fixation, then stability is improved, but ease of operation deteriorates for users with limited dexterity
Solution Approach 1:
The telescoping tube mechanism uses a thumb screw that can be easily operated with one hand, allowing users to adjust and lock the height without requiring complex tools or two-handed operation. The thumb screw design provides sufficient gripping surface and mechanical advantage for users with limited dexterity, enabling self-service adjustment while maintaining stable locking when tightened.
Data Source
AI summary
There is provided a mounting assembly including a frame portion of a walker apparatus having a first bore and a second bore extending in a direction generally perpendicular to the first bore. The assembly includes a shaft rotatably connected to a wheel fork. The shaft is partially disposed within the first bore. The shaft has a recess for aligning with the second bore. The recess may be annular according to one aspect. The assembly includes a securing member threadably engageable with the second bore. The securing member couples to the frame portion of the walker apparatus. The frame portion may have a closed top according to another aspect within which a first end of the shaft is positioned. The assembly may include a bearing and a female threaded member connected to a second end of the shaft, with the female threaded member situating the bearing in place.