Angled Sidewall Rotor Shield for Heavy-Duty Brake Corrosion
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Solution Overview
Problem
Existing disc brake systems for heavy-duty vehicles are susceptible to corrosion from road spray and contaminants, leading to reduced performance and life of the rotor and brake pads, as previous shields have provided inadequate protection.
Innovation Solution
A rotor protection shield with a flat, radially-extending central wall and an angled sidewall that extends radially outwardly from the outer periphery, positioned to directly protect the inboard surface of the rotor, minimizing exposure to road spray and contaminants while allowing their egress, and optionally featuring a lip for enhanced protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotor protection shield is installed to protect against road spray and contaminants, then corrosion resistance is improved, but device complexity increases
Solution Approach 1:
The protection shield is divided into two distinct functional segments: a radially extending central wall for primary protection, and an angled sidewall for secondary protection and contaminant management. This segmentation allows each part to perform its specific function efficiently while keeping the overall design relatively simple.
Solution Approach 2:
The shield transitions from a simple radial structure to a three-dimensional structure by adding the angled sidewall that extends axially outwardly. This dimensional change provides enhanced protection without requiring a completely complex multi-component system.
2Ease of manufacture
If the shield structure is simplified to reduce device complexity, then manufacturing ease is improved, but protection effectiveness against road spray deteriorates
Solution Approach 1:
The shield is segmented into a central wall and sidewall that can be formed as separate functional zones in a single stamping operation, maintaining manufacturing simplicity while achieving complex protective geometry.
Solution Approach 2:
The angled sidewall adds a third-dimensional element to the otherwise simple radial structure, providing enhanced protection against road spray and contaminants while still being manufacturable in a single stamping operation.
3Reliability
If the shield extends closer to the rotor to improve protection, then corrosion resistance is improved, but heat dissipation efficiency deteriorates
Solution Approach 1:
The shield provides localized protection where it is most needed (at the rotor periphery where road spray impact is greatest) through the angled sidewall, while maintaining adequate spacing from the rotor surface to allow heat dissipation in other areas.
Solution Approach 2:
The angled sidewall extends axially outwardly from the radial plane, providing protection in a different spatial dimension that doesn't require the shield to be positioned closer to the rotor, thus maintaining heat dissipation pathways.
4Ease of operation
If a smooth surface is used for the shield to reduce contaminant buildup, then cleaning ease is improved, but contaminant diversion capability deteriorates
Solution Approach 1:
The angled sidewall creates a smooth curved transition from the radial to axial direction, which naturally directs contaminants away from the rotor through geometric shaping rather than surface texture, maintaining both contaminant diversion and ease of cleaning.
Data Source
AI summary
A rotor protection shield for a disc brake system for heavy-duty vehicles includes a flat, radially-extending central wall and a sidewall. The sidewall is integrally formed with and extends radially outwardly from an outer periphery of the central wall. The sidewall is angled axially outboardly relative to a planar surface of the central wall at an angle that is between about forty-five degrees and about seventy-five degrees. The central wall and the sidewall are smooth, and the shield is mounted to a torque plate proximate an inboard surface of the disc brake rotor to protect the rotor from road spray and contaminants.