Outer-Circumference Brake Lining for Low-Noise Disc Brakes
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Solution Overview
Problem
Existing disc brake designs suffer from mechanical vibrations, noise generation, brake dust emission, corrosion, non-symmetric pad wear, axial expansion of the brake caliper, uneven thermal loading, excessive heating, and increased weight, which affect brake performance and user experience.
Innovation Solution
A disc brake arrangement featuring a brake disc with a disc member and a brake lining at its outer circumferential face, where the brake pad is radially displaceable to contact the brake lining, reducing radial vibrations and thermal expansion, and incorporating a brake pad with a large heat capacity to manage thermal distribution, while the brake lining is designed to reduce noise and wear through increased surface area and strategic placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the brake pad contacts the brake disc at the side faces, then braking force is generated, but mechanical vibrations and noise are increased
Solution Approach 1:
The patent transitions from contacting the brake disc at its side faces (axial dimension) to contacting the outer circumferential face (radial dimension). This dimensional change moves the contact zone from the edge of the disc to its outer surface, fundamentally altering the braking mechanism to reduce vibrations and noise while maintaining effective brake force generation.
2Object-generated harmful factors
If the brake lining is placed at the outer circumferential face, then noise and vibrations are reduced, but the device complexity increases
Solution Approach 1:
Instead of placing the brake lining on the conventional side faces of the brake disc, the patent inverts the arrangement by positioning it at the outer circumferential face. This inversion of the traditional design approach allows the brake pad to contact the lining at the disc's outer surface, reducing noise and vibrations while the complexity is managed through integrated design of the lining and disc components.
3Temperature
If the brake pad is made with large heat capacity, then thermal distribution is improved, but the weight of the brake system increases
Solution Approach 1:
The patent applies local quality by concentrating heat capacity in specific components (brake pad and brake lining) rather than increasing the weight of the entire brake system. The brake lining at the outer circumferential face and the brake pad are designed with materials and structures that provide localized thermal management, improving thermal distribution where it is most needed while minimizing overall weight increase.
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
This design reduces drag torque, noise, and brake dust emission, improves thermal distribution, extends service life, and minimizes vibrations and noise, resulting in enhanced brake performance and reduced weight.
Implementation Method 1
the brake pad is (in particular radially) displaceable relative to the brake lining, so as to contact the brake lining during braking for generating a brake force
Implementation Method 2
the brake pad with a large heat capacity to manage thermal distribution
Implementation Method 3
improves thermal distribution
Implementation Method 4
reduces drag torque, noise, and brake dust emission, improves thermal distribution
Data Source
AI summary
The invention concerns a disc brake arrangement for a vehicle, the disc brake arrangement comprising: a brake disc that is rotatable about a rotational axis; and at least one brake pad, wherein the brake disc comprises a disc member and a brake lining at an outer circumferential face of the disc member and wherein the brake pad is displaceable relative to the brake lining, so as to contact the brake lining during braking for generating a brake force.