Annular Drum Brake Dust Trap for Easy Removal and Disposal

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Solution Overview

Problem

Existing brake dust collection methods for drum brakes are inefficient and require trained personnel for maintenance, posing environmental and health risks due to the escape of harmful particulate matter.

Innovation Solution

A brake dust trap with an annular shape is designed to fit into a groove in the drum brake, using snap fit or interference fit mechanisms, and comprising porous, magnetic, or adhesive materials to trap and retain particulate matter, allowing for easy removal and disposal, and can be segmented for convenient installation and replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a collector member is fitted outside the brake drum to collect dust particles, then dust collection is achieved, but emptying the collector member requires trained personnel and is not easy

Engineering Contradiction:
Improvedust collection efficiencyVSAvoidease of emptying
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The dust collection function is extracted from the brake drum itself and placed in a separate, removable dust trap that can be easily taken out and emptied. The dust trap is designed as a distinct component with a removable bottom portion, allowing dust to be easily discharged without requiring disassembly of the brake drum or specialized training.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The dust trap is designed to be easily removed and emptied, facilitating the discarding of collected dust. The removable bottom portion allows for simple dust discharge, and the trap can be reused after emptying, combining ease of disposal with resource recovery.

Inventive Principle:
Principle #34Discarding and recovering

2Ease of manufacture

If the brake dust trap is made as a single piece, then manufacturing is simple, but insertion into the brake drum groove is difficult

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidease of insertion
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The brake dust trap is divided into multiple segments or sections that can be easily inserted into the brake drum groove. The segmented design allows the trap to be assembled in place without requiring removal of the entire component, significantly easing installation while maintaining manufacturing simplicity for each individual segment.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If the brake dust trap uses loose fasteners for retention, then removal is easy, but the trap may become loose during operation

Engineering Contradiction:
Improveease of removalVSAvoidretention stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The fastening function is extracted from loose mechanical fasteners and replaced with an integrated snap fit mechanism built into the dust trap structure. This provides secure retention during operation while maintaining easy removal capability through the same integrated mechanism, eliminating the need for separate fasteners that could become loose.

Inventive Principle:
Principle #2Taking out (Extraction)

4Object-affected harmful factors

If the dust trap surface area is increased to improve dust trapping, then dust collection efficiency improves, but the trap becomes harder to install and remove

Engineering Contradiction:
Improvedust trapping efficiencyVSAvoidease of installation
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The dust trap is divided into multiple segments that collectively provide a large surface area for dust trapping while each individual segment remains small enough for easy handling and installation. The segmented design allows the large trap to be assembled in place within the brake drum groove without requiring difficult manual manipulation of a single large component.

Inventive Principle:
Principle #1Segmentation

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

Effectively prevents brake dust from escaping, facilitating safe and controlled disposal, reducing environmental pollution and health risks, while being cost-efficient and easy to maintain.

Implementation Method 1

the brake dust trap comprises a porous material configured to absorb and to hold particulate matter

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

the brake dust trap comprises a porous material configured to absorb and to hold particulate matter

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 3

the brake dust trap comprises a magnetic material configured to attract and to hold magnetic particulate matter

Methodology Applied
Scientific EffectMagnetism: Magnetism

Implementation Method 4

the brake dust trap comprises a sticky, adhesive, or viscid surface portion configured to adhere to and to hold particulate matter

Methodology Applied
Scientific EffectAdhesion: Adhesive

Data Source

PatentEP3999755B1A brake dust trap for a drum brake
Publication Date: 2023.12.20 VOLVO TRUCK CORP
  • EP3999755B1 patent drawingFigure 1~2
  • EP3999755B1 patent drawingFigure 3
  • EP3999755B1 patent drawingFigure 4~6

AI summary

A brake dust trap (210) for a drum brake (140), the brake dust trap (210) having an annular shape arranged to be received in a groove (310) formed circumferentially in a drum (220) of the drum brake (140) to trap particulate matter generated by the drum brake (140), wherein the brake dust trap (210) is arranged to be retained in the groove (310) to rotate along with the drum (220), and removable from the drum brake (140) for disposal of trapped particulate matter.