Brake Dust Filter Cartridge Coupling for Compact Sealed Maintenance

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Solution Overview

Problem

Existing brake dust particle filter arrangements face challenges in achieving a long service interval within limited installation space and securely storing harmful fine dust particles, leading to cumbersome installation and maintenance processes that may result in dust particle escape.

Innovation Solution

The filter arrangement incorporates a coupling element that includes an air outlet duct and air outlet, facilitating easy installation and reducing the need for additional construction elements, thereby minimizing the risk of dust particle escape during maintenance or replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the filter arrangement is installed at the brake assembly with separate air inlet and air outlet connections, then the filtering function is achieved, but the installation becomes cumbersome and requires excessive movement of the filter arrangement

Engineering Contradiction:
Improveinstallation easeVSAvoidconnection complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The air inlet duct and air outlet duct are merged into a single coupling element that attaches to the brake assembly. This integration eliminates the need for separate connection operations for air inlet and air outlet, allowing the filter arrangement to be installed by simply attaching the coupling element to the brake assembly flange, thereby simplifying the installation process while maintaining proper air flow paths.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of repair

If the filter arrangement is removed from the brake assembly for maintenance, then the filter can be replaced, but fine dust particles may escape during the removal process

Engineering Contradiction:
Improvemaintenance accessibilityVSAvoiddust particle escape
Core Design Contradiction:
Ease of repairVSObject-affected harmful factors

Solution Approach 1:

The filter arrangement is segmented into a removable filter cartridge and a stationary coupling element that remains attached to the brake assembly. During maintenance, only the filter cartridge needs to be removed and replaced, while the coupling element with its integrated air inlet and outlet ducts remains in place. This segmentation allows for easy filter replacement without requiring complete disassembly, and the stationary coupling element ensures that air flow paths remain sealed, preventing dust particle escape during maintenance operations.

Inventive Principle:
Principle #1Segmentation

3Reliability

If additional construction elements are added for air inlet and air outlet connections, then proper air flow is ensured, but the installation space requirement increases

Engineering Contradiction:
Improveair flow reliabilityVSAvoidinstallation space
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The air inlet duct and air outlet duct are merged into a single coupling element that attaches to the brake assembly flange. This integration consolidates multiple air flow paths into one compact component, ensuring reliable air inlet and outlet connections while minimizing the space required for installation. The coupling element design allows proper air flow separation and direction without requiring additional separate construction elements, thereby maintaining reliability while reducing installation space requirements.

Inventive Principle:
Principle #5Merging (Combining)

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 allows for a compact filter arrangement design that reduces installation complexity, extends service intervals, and securely confines fine dust particles, minimizing health hazards for service personnel.

Implementation Method 1

The polluted air passes through the filter medium within the filter cartridge. The (fine) dust particles are separated from the polluted air into the filter medium.

Methodology Applied
Scientific EffectPhysical filtration: Filter (physical)

Data Source

PatentEP4552722A1Filter cartridge and filter arrangement
Publication Date: 2025.05.14 MANN HUMMEL GMBH
  • EP4552722A1 patent drawingFigure 1
  • EP4552722A1 patent drawingFigure 2
  • EP4552722A1 patent drawingFigure 3

AI summary

A filter cartridge (2) includes a filter cartridge cover (5) including a filter cartridge installation opening (15), a filter cartridge housing (9) on which the filter cartridge cover (5) is disposed, a filter medium (8) disposed inside the filter cartridge housing (9), and a stripper device (10) disposed inside the filter cartridge housing (9). The stripper device (10) includes a stripper shaft (11) having an axis coinciding with a longitudinal axis of the filter cartridge (2), and stripper elements (12) extending from the stripper shaft (11) and configured to engage with the filter medium (8) to cast off dust particles that are accumulated on the filter medium (8).