Brake Cable Housing Access for Tension Adjustment in Wheeled Vehicles
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Solution Overview
Problem
Existing brake systems for height-adjustable wheeled vehicles, such as walkers and wheelchairs, face challenges in maintaining optimal cable tension due to elongation and wear, which affects braking performance, and require inconvenient access for adjustments.
Innovation Solution
A cable tension adjuster integrated within a brake cable housing that allows for easy tension adjustment without disassembling the braking system, combined with a wheel fork assembly design that provides access to the brake adjustment mechanism, enabling improved braking performance and user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the brake cable assembly is made adjustable to compensate for elongation and wear, then braking performance is improved, but the device complexity increases
Solution Approach 1:
The cable adjuster is nested within the brake cable housing, with the housing enclosing the adjuster mechanism. This allows the adjustment function to be integrated into the existing brake assembly structure, adding functionality while minimizing increased complexity. The adjuster is positioned within the housing and accessible through an opening in the housing wall.
2Ease of operation
If the cable adjuster is made accessible for easy adjustment, then ease of operation is improved, but the device complexity increases
Solution Approach 1:
The housing wall opening serves as an intermediary access point, allowing users to adjust the cable tension without disassembling the entire brake assembly. The opening provides direct access to the adjuster mechanism while the housing maintains protection and structural integrity. This intermediary access solution simplifies operation while avoiding the need for complete disassembly.
3Reliability
If the brake cable housing encloses the excess portion of the brake cable assembly, then reliability is improved, but the ease of repair worsens
Solution Approach 1:
The excess portion of the brake cable assembly is extracted from the general brake system and specifically enclosed within the housing. This isolation protects the cable from external damage and environmental factors, improving reliability. The housing acts as a protective enclosure that can be independently accessed for maintenance without affecting the entire brake system.
Data Source
AI summary
A cable tension adjuster for a manually operated, height-adjustable wheeled vehicle. The vehicle includes a brake assembly including a brake cable assembly and a brake cable housing shaped to enclose an excess portion of the brake cable assembly. The brake assembly includes a cable adjuster coupled to the brake cable assembly, where the cable adjuster is enclosed by the brake cable housing. The brake cable housing provides an access port to access the cable tension adjuster.