Alternating Dual-Material Brake Pad for Rotor Surface Maintenance
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Solution Overview
Problem
Brake pads experience uneven wear, leading to non-planar surface portions on brake pads and rotors, which can result in reduced braking efficiency and rotor refurbishing issues.
Innovation Solution
A brake pad design featuring alternating layers of different materials, where one material provides friction and another material offers abrasive properties for rotor cleaning and refurbishing, ensuring consistent contact and surface maintenance during braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-material brake pad is used, then the structure is simple, but the brake pad cannot simultaneously provide friction and rotor cleaning functions
Solution Approach 1:
The brake pad employs a composite structure consisting of a friction material layer and an abrasive material layer. The friction material layer provides braking friction, while the abrasive material layer cleans and refurbishes the rotor surface. This composite material approach enables the brake pad to simultaneously perform multiple functions (friction generation and rotor cleaning) that a single material cannot achieve, directly resolving the technical contradiction between functional versatility and material simplicity.
Solution Approach 2:
The brake pad is divided into distinct functional layers: a friction material layer for generating braking friction and an abrasive material layer for rotor cleaning. This segmentation of functions into separate layers allows each material to be optimized for its specific purpose while working together as an integrated system, enabling multi-functionality without requiring a single complex material.
2Duration of action of moving object
If the brake pad wears uniformly, then the service life is extended, but non-planar surface portions still form on the brake surfaces
Solution Approach 1:
The abrasive material layer, which naturally wears during braking operations, is designed to actively clean and refurbish the rotor surface as it wears away. Instead of viewing wear as purely harmful (which creates non-planar surfaces), the invention converts the wear process into a beneficial cleaning action that removes non-planar portions and restores surface flatness. This transforms the harmful effect of wear into a useful rotor refurbishing function, extending service life while maintaining surface precision.
Solution Approach 2:
The brake pad's abrasive material layer performs self-service by automatically cleaning and refurbishing the rotor surface during normal braking operations. As the abrasive layer wears, it continuously removes non-planar surface portions from the rotor, maintaining surface flatness without requiring external intervention or separate cleaning mechanisms. This self-service approach simultaneously extends service life and maintains manufacturing precision.
3Adaptability or versatility
If alternating layers of different materials are used, then friction and rotor cleaning functions are both provided, but the brake lining structure becomes more complex
Solution Approach 1:
The brake lining incorporates a composite structure with alternating layers of friction material and abrasive material. Each layer is optimized for its specific function: the friction material layers provide braking friction, while the abrasive material layers clean and refurbish the rotor. This composite layering enables the brake pad to simultaneously perform multiple functions that a single homogeneous material cannot achieve.
Solution Approach 2:
Different regions of the brake lining are assigned different material properties to perform different functions. The friction material layers are positioned to contact the rotor for braking, while the abrasive material layers are positioned to clean the rotor surface. This local differentiation of material quality allows each portion of the brake lining to be optimized for its specific function, achieving functional versatility through spatial distribution of specialized materials.
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 dual-material design enhances braking performance by maintaining friction and cleaning the rotor surfaces, reducing wear-related inefficiencies and improving braking consistency over time.
Implementation Method 1
The first material is different from the second material and the first material produces friction when in contact with a brake rotor
Implementation Method 2
the second material with abrasive properties that cleanse and/or refurbish braking surfaces of the brake rotor during braking operations
Data Source
AI summary
A brake pad has a brake lining with a first section and a second section. The first section includes a plurality of first layers having a first material and a plurality of second layers having a second material. The first material is different from the second material. The plurality of first layers and the plurality of second layers are alternatingly arranged between one another. The second section includes a plurality of third layers having the second material and a plurality of fourth layers having the first material. The plurality of third layers and the plurality of fourth layers are alternatingly arranged between one another. The plurality of first layers are adjacent to corresponding ones of the plurality of third layers are co-planar with one another. Further, the plurality of second layers are adjacent to corresponding ones of the plurality of fourth layers are co-planar with one another.