Disc Brake Dust Filter Sealing for Particle Escape Control
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Solution Overview
Problem
Brake dust from disc brakes contaminates the environment, affects brake function, and is aesthetically undesirable, as existing solutions do not effectively prevent its entry into the surroundings.
Innovation Solution
A disc brake arrangement with a brake dust particle filter featuring a filter housing and a filter medium that protrudes beyond the housing to bridge the gap between the filter housing and the brake caliper, using a metal fiber fleece or similar materials to effectively capture and retain brake dust particles, ensuring a tight seal and minimizing particle escape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter housing is used to contain brake dust particles, then particle retention is improved, but gaps between the filter housing and brake caliper allow dust escape
Solution Approach 1:
The filter medium is pre-formed with a protruding section that is designed to bridge the gap between the filter housing and brake caliper assembly before installation. This protruding section is elastic and is pre-configured to be inserted into the gap area, establishing contact with the brake caliper assembly to prevent dust escape paths before the braking process begins.
Solution Approach 2:
The filter medium includes an elastic protruding section that functions as a flexible sealing element. This elastic portion can deform to conform to the brake caliper assembly surface, creating an effective seal that prevents brake dust particles from escaping through gaps between the rigid filter housing and the brake caliper assembly.
2Device complexity
If the filter medium is contained entirely within the filter housing, then the filter structure is simple, but brake dust particles can escape through gaps between the filter housing and brake caliper
Solution Approach 1:
The filter medium is pre-formed with a protruding section that is designed to bridge the gap between the filter housing and brake caliper assembly before installation. This protruding section is elastic and is pre-configured to be inserted into the gap area, establishing contact with the brake caliper assembly to prevent dust escape paths before the braking process begins.
Solution Approach 2:
The filter medium extends beyond the filter housing in the circumferential direction, adding a dimensional element that protrudes into the gap space between the filter housing and brake caliper assembly. This circumferential extension creates a sealing bridge that blocks particle escape paths without requiring additional separate sealing components.
3Ease of manufacture
If the filter medium does not seal against the brake caliper assembly, then installation is easier, but vibrations cause the filter medium to lift off and particles escape
Solution Approach 1:
The filter medium includes an elastic protruding section that functions as a flexible sealing element. This elastic portion can deform to conform to the brake caliper assembly surface, creating an effective seal that prevents brake dust particles from escaping through gaps between the rigid filter housing and the brake caliper assembly.
Solution Approach 2:
The filter medium is designed with elastic properties that allow it to dynamically respond to vibrations and thermal expansions during vehicle operation. The elastic protruding section can flex and maintain contact pressure against the brake caliper assembly surface, ensuring continuous sealing integrity under varying operational conditions without requiring complex mechanical fastening systems.
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
The solution significantly reduces the release of brake dust into the environment by enhancing separation efficiency, maintaining a dust-tight connection between the filter housing and brake caliper, and effectively capturing particles through the use of temperature-resistant filter media.
Implementation Method 1
The filter medium serves to retain and collect brake dust particles
Implementation Method 2
The protruding section of the filter medium can direct an airflow laden with brake dust particles from the brake caliper into the filter housing
Data Source
Figure 1
Figure 2
AI summary
One aspect of the invention relates to a disc brake arrangement (10) having a brake disc (12), a brake caliper assembly (20) with a brake caliper (22), and a brake dust particle filter (28) with a filter housing (30) and a filter medium (32), which is partially arranged in the filter housing (30), the filter medium (32) protruding from the filter housing (30) in the circumferential direction of the brake disc (12) and abutting the brake caliper assembly (20). The invention further relates to a brake dust particle filter (28) for a disc brake arrangement (10) of this kind, having a filter housing (30) and a filter medium (32), which is partially arranged in the filter housing (30) and protrudes from the filter housing (30) in the circumferential direction. A further aspect of the invention relates to a brake dust particle filter (28) for a disc brake arrangement (10).