Brake Pad Web Flange Curvature for Drum Stiffness
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Solution Overview
Problem
Existing brake pad assemblies for drum brakes lack sufficient stiffness and durability, particularly in the web and flange structures, which can lead to reduced effectiveness and shorter wear life when engaging with brake drums.
Innovation Solution
The brake pad assembly incorporates a table with first and second webs that include flanges, bearing flanges, and a unique configuration of surfaces and openings to enhance stiffness and durability, with the flanges extending along an arc and spaced apart to accommodate mounting components like anchor pins and cam rollers, thereby improving structural integrity and engagement with brake drum surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the web structure is made thicker or more substantial to increase stiffness, then structural strength improves, but the device complexity and material usage increase
Solution Approach 1:
The web is formed with a curved configuration that extends along a radius of the brake drum, creating an arc-shaped structure. This curvature provides inherent stiffness and strength to resist bending forces during braking, while maintaining a slender profile that does not increase material usage or overall complexity. The curved web effectively uses geometric form to achieve structural rigidity.
2Strength
If the flange is extended further along the arc to increase structural support, then stiffness improves, but the device complexity increases
Solution Approach 1:
The flange is positioned at a specific radial distance from the brake drum surface, creating a three-dimensional configuration that provides structural support without extending excessively along the arc. This spatial arrangement in multiple dimensions (radial distance, arc position, and thickness) achieves the required stiffness while maintaining simplicity in the overall design.
3Device complexity
If anchor pins and cam rollers are closely spaced to reduce component count, then device complexity decreases, but manufacturing precision requirements increase
Solution Approach 1:
The brake pad assembly uses multiple discrete components including anchor pins and cam rollers that are distributed along the curved web. This segmentation allows each component to be manufactured and positioned independently, reducing the need for high-precision simultaneous manufacturing of all components. The spaced arrangement of these segmented elements simplifies manufacturing while maintaining structural integrity.
Data Source
AI summary
A brake pad assembly having a table and a web. The web may extend from the table and include a flange that may be disposed opposite the table.