Enclosed Wheel Brake Chamber for Low-Noise Dust-Control Braking
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Solution Overview
Problem
Conventional brake systems generate noise, produce brake dust, and are prone to corrosion due to exposure to the environment, affecting braking performance.
Innovation Solution
A brake system design where the brake shoe is enclosed within a chamber defined by the tire, isolating friction areas and protecting components from humidity and environmental conditions, with a friction surface on the chamber wall and optional additional material layers, and a dust collector for capturing brake dust.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If brake components are exposed to environment and ambient air, then braking performance is maintained, but noise is generated and dust enters environment
Solution Approach 1:
The brake system is segmented into an enclosed chamber within the wheel that isolates the friction components (brake shoe and friction surface) from the external environment. This segmentation allows the braking function to be preserved within the sealed chamber while preventing noise and dust from being emitted to the environment.
Solution Approach 2:
The brake components are nested within the wheel structure, specifically within a chamber formed in the wheel body. The brake shoe and friction surface are positioned inside this nested chamber, which is itself contained within the wheel assembly, creating a hierarchical nesting that protects the braking components while maintaining compact design.
2Object-affected harmful factors
If brake components are exposed to environment, then accessibility is maintained, but corrosion is enhanced
Solution Approach 1:
The brake components are pre-protected by enclosing them within the sealed chamber before any corrosion can occur. The chamber acts as a preliminary protective barrier that prevents moisture and corrosive environmental factors from reaching the brake components, while actuation is achieved through pre-planned access points.
Solution Approach 2:
The chamber wall acts as an intermediary barrier between the corrosive external environment and the brake components. This intermediate structure protects the internal components from corrosion while allowing actuation forces to be transmitted through the chamber wall to the brake shoe.
3Power
If brake shoe is positioned at larger effective radius, then braking performance is enhanced, but structural complexity increases
Solution Approach 1:
The brake chamber is merged with the wheel structure, where the chamber is formed as an integral part of the wheel body rather than as a separate component. This merging allows the brake shoe to be positioned at a larger effective radius for enhanced braking power while avoiding the additional structural complexity that would result from a separate chamber assembly.
Solution Approach 2:
The wheel structure serves multiple functions: it supports the vehicle, provides the rotating element for braking, and contains the integrated chamber for housing the brake components. This multi-functionality allows the brake shoe to be positioned at a larger radius for improved braking performance without adding separate structural elements.
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
This design reduces noise and dust emission, protects brake components from corrosion, and allows for a larger effective radius of friction, enhancing braking performance while maintaining effective dust collection.
Implementation Method 1
A brake shoe is arranged within the chamber, configured to be pressed against the friction surface for braking
Data Source
AI summary
A brake system for a vehicle comprises a wheel and a tire mounted on the wheel. The wheel has a chamber that is at least partially arranged within a volume defined by the tire, a friction surface being provided at a wall delimiting the chamber. A brake shoe is arranged within the chamber, configured to be pressed against the friction surface for braking.