Additive Brake Pad Lattice with Matched Compressibility

Solution Overview

Problem

Existing brake pads face challenges in maintaining consistent coefficient of friction and wear resistance across their tribological surfaces, leading to reduced lifespan and increased noise during vehicle operation.

Innovation Solution

A brake pad assembly featuring a base plate with a tribological lining and an enhancement framework, where the enhancement framework is designed to have a compressibility factor equal to the tribological lining, providing reinforcement and manufactured using additive techniques such as interlaced lattice structures or spring-like coils, ensuring consistent performance and durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a reinforcement structure is added to the friction lining, then wear resistance and noise reduction are improved, but the coefficient of friction consistency deteriorates

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The reinforcement structure's compressibility factor is specifically engineered to match the friction lining material, creating a harmonized mechanical response that prevents disruption to friction consistency while maintaining wear resistance benefits

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The brake pad assembly combines the friction lining material with a reinforcement structure having matched compressibility characteristics, creating a composite system where both materials work together without compromising the tribological performance

Inventive Principle:
Principle #40Composite materials

2Object-generated harmful factors

If a reinforcement structure is added to the friction lining, then noise reduction is improved, but the compressibility factor consistency deteriorates

Engineering Contradiction:
Core Design Contradiction:
Object-generated harmful factorsVSStability of the object's composition

Solution Approach 1:

The reinforcement structure is designed with a compressibility factor substantially equal to the friction lining material, ensuring that the addition of reinforcement does not create compressibility mismatches that would lead to noise and inconsistent performance

Inventive Principle:
Principle #35Parameter changes

3Ease of manufacture

If traditional manufacturing methods are used for brake pads, then manufacturing simplicity is maintained, but wear resistance and lifespan deteriorate

Engineering Contradiction:
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The reinforcement structure is strategically disposed within the friction lining at specific locations where additional support is needed, rather than uniformly throughout, allowing targeted improvement of wear resistance while maintaining manufacturing efficiency

Inventive Principle:
Principle #3Local quality

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 enhances the wear resistance and noise reduction of brake pads by maintaining consistent coefficient of friction and compressibility across the tribological surface, extending the brake pad's lifespan and improving operational efficiency.

Implementation Method 1

the enhancement framework is designed such that its compressibility is substantially factor equal to that of the tribological lining, such that both the tribological lining and enhancement structure at the tribological surface of the brake pad act in coordination

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

the interlaced lattice structures may be manufactured using an additive manufacturing technique

Methodology Applied
Scientific EffectAdditive manufacturing: 3D Printing

Data Source

PatentUS10690201B2Additively-manufactured brake pad assembly with controlled compressibility factor
Publication Date: 2020.06.23
  • US10690201B2 patent drawing
  • US10690201B2 patent drawing
  • US10690201B2 patent drawing

AI summary

A brake pad assembly having a consolidated lining comprised of an enhancement framework disposed within a tribological lining, the enhancement framework and tribological lining having substantially the same compressibility factor. The enhancement framework or tribological lining may advantageously be manufactured using an additive manufacturing technique.