Brake Pad Wear Indicator for Fast Visual Thickness Checks
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Solution Overview
Problem
Existing brake pad wear monitoring systems lack an efficient method to visually indicate the state of wear of friction material without contacting the brake caliper or carrier, which can lead to inaccurate assessments and increased inspection time.
Innovation Solution
A brake assembly with a friction material measurement system that includes a tool and members fixedly positioned with respect to the brake carrier and pad assemblies. The tool has indicator regions that provide visual information on the wear state of the friction material, allowing alignment with members to indicate wear levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a brake pad wear monitoring system is used, then the state of wear of friction material can be assessed, but the inspection time and complexity increase
Solution Approach 1:
The tool is pre-mounted to the brake carrier with indicator regions prepared in advance. The members are pre-positioned on the brake pad assemblies. This preliminary setup allows for rapid wear assessment without requiring complex inspection procedures or significant inspection time.
Solution Approach 2:
The tool acts as an intermediary between the brake carrier and the members on the brake pad assemblies. It provides a visual interface through indicator regions that show wear states without requiring direct measurement or complex assessment procedures, thereby reducing inspection time while maintaining accuracy.
2Ease of manufacture
If the tool contacts the brake caliper, then mounting is simplified, but measurement accuracy decreases due to potential interference
Solution Approach 1:
The tool is extracted from the brake caliper and mounted independently to the brake carrier. This separation eliminates potential interference with the brake caliper while maintaining simple mounting through attachment to the brake carrier structure. The tool remains stationary relative to the carrier while members move with the brake pad assemblies.
3Productivity
If visual indication method is used, then inspection speed increases, but measurement precision may be compromised
Solution Approach 1:
The mechanical measurement system is replaced with a visual indication system. The tool has indicator regions that provide visual information about wear states through alignment with members on the brake pad assemblies. This substitution enables rapid visual assessment while maintaining measurement precision through carefully designed alignment references and indicator scales.
Solution Approach 2:
The indicator regions on the tool provide visual information through color or pattern changes that correspond to different wear states. As members move relative to the indicator regions due to friction material wear, the visual indication changes, enabling quick and accurate assessment of wear levels without complex measurement procedures.
4Device complexity
If the tool is integrated with the brake caliper, then the system is more compact, but the tool cannot remain stationary relative to the brake carrier
Solution Approach 1:
The tool is extracted from the brake caliper and mounted independently to the brake carrier. This ensures the tool remains stationary relative to the carrier while the brake caliper and brake pad assemblies move. The tool's independent mounting to the carrier maintains measurement consistency without requiring integration with the moving brake caliper components.
Data Source
AI summary
A brake assembly having a friction material measurement system for measuring friction material of a brake pad assembly. The friction material measurement system has a tool and a member. The tool is fixedly positioned with respect to a brake carrier. The member is fixedly positioned with respect to the brake pad assembly.