Motorcycle Rear Brake Disc Guard Assembly Design
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Solution Overview
Problem
Motorcycle disc brake systems are more vulnerable to damage due to their exposed configuration, especially in off-road environments where debris is flung up with greater force and density, posing a risk to the disc brake's performance and longevity.
Innovation Solution
A disc guard assembly is provided, comprising a disc guard and a carrier adapter, which are removably attached to the rear brake carrier mount, featuring a plastic disc guard and a metal carrier adapter. The disc guard covers the exterior side surface of the disc, while the carrier adapter secures the disc guard in place, using tabs and fasteners to ensure proper alignment and protection. The design includes openings to allow air passage and prevent large objects from damaging the disc, while allowing liquids and debris to exit, thus maintaining disc performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the disc brake system is exposed to provide easy access and lightweight design, then the braking performance and weight are improved, but the vulnerability to debris and external damage increases
Solution Approach 1:
A disc guard assembly is introduced as an intermediary component between the external environment and the brake disc. The guard includes a guard body with a disc guard opening that allows the brake caliper to access the disc while blocking debris and foreign objects from contacting the disc surface, thus protecting the disc while maintaining braking functionality
Solution Approach 2:
The disc guard assembly is divided into multiple segments including a guard body, guard opening, and mounting components. This segmentation allows the guard to provide comprehensive protection while maintaining access for brake operation and allowing for easy installation and removal
2Object-affected harmful factors
If a protective cover is added to shield the disc from debris, then the protection is improved, but the weight and complexity of the brake system increase
Solution Approach 1:
The disc guard assembly serves multiple functions: it protects the disc from debris, maintains proper spacing between the disc and caliper, and provides a mounting structure that integrates with the existing brake system. This multi-functionality reduces the need for additional separate components
Solution Approach 2:
The guard body is designed as a thin-walled structure that provides adequate protection while minimizing added weight. The flexible design allows for easy installation and removal without requiring complex fastening mechanisms
3Object-affected harmful factors
If the disc is fully enclosed for maximum protection, then the protection from debris is improved, but the heat dissipation and braking efficiency deteriorate
Solution Approach 1:
The disc guard features a localized opening (disc guard opening) that provides targeted protection only where needed - blocking debris from contacting the disc while leaving the braking surfaces exposed for heat dissipation and brake operation. This selective protection maintains thermal management while providing debris shielding
Data Source
AI summary
A disc guard assembly for use in shielding a disc of a rear disc brake system on a motorcycle is provided. The disc guard assembly may include a disc guard, which may be plastic, and a carrier adapter, which may be metal. The carrier adapter may be removably attached to a rear brake carrier mount of the rear disc brake system of the motorcycle via one or more fasteners, and the disc guard may be removably attached to the carrier adapter via one or more fasteners.