Brake Pad Damping Plate Axial Offset for Noise Suppression
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Solution Overview
Problem
Existing brake pads with damping plates and thickened guide ends face issues with noise-generating vibrations due to undefined contact and micro-movements, particularly in designs with elevations, which affect handling and strength, and existing solutions are either ineffective or complex in production.
Innovation Solution
The damping plate is offset axially in the body region relative to the bracket region, with a bending region forming an oblique face to improve strength and a bent-over bracket attaching rigidly to the back plate, suppressing noise-generating vibrations and enhancing handling by avoiding troublesome corners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the bracket is attached relatively soft and flexible to the damping plate, then noise-damping is improved, but the attachment becomes susceptible to vibrational movements and stick-slip effects
Solution Approach 1:
The patent changes the attachment parameters from soft and flexible to rigid and precise. The bracket is firmly attached to the damping plate with defined geometric contact, eliminating the soft attachment that caused vibrations while maintaining noise-damping through rigid structural coupling.
Solution Approach 2:
The patent extracts the damping function from a flexible bracket attachment and relocates it to the damping plate itself, which is firmly attached to the brake pad. This separates the noise-damping function from the potentially unstable bracket connection.
2Adaptability or versatility
If a tangential flange part extends around the tangential side face of the back plate, then the damping plate can accommodate elevations, but production complexity and handling difficulty increase
Solution Approach 1:
The patent segments the damping plate structure into distinct functional zones: a body region, a bracket region with elevated contact surface, and a bending region. This segmentation allows the elevated contact surface to accommodate the back plate elevation without requiring complex flange structures that extend around the entire plate.
Solution Approach 2:
The patent applies local quality by providing an elevated contact surface specifically in the bracket region where it is needed to accommodate the back plate elevation, rather than creating a complex flange structure throughout. The damping plate has different structural characteristics in different regions optimized for their specific functions.
Data Source
AI summary
A brake pad for a partially-lined disk brake and a method for making such a brake pad. The brake pad has a back plate, a friction lining arranged fixedly on a front side of the back plate and a damping plate provided on a rear side. At least one hook-shaped guide end adjoins a body region of the back plate in a circumferential direction. The guide end has an elevation with a material thickness D increased in relation to a material thickness d of the body region. At least one abutment face for tangential abutment in a circumferential direction is provided on the guide end and a support face is provided thereon for radial support in a radial direction. The damping plate has at least one bent-over bracket which rests against the radial support face in a bracket region of the back plate. The damping plate is offset axially to the rear relative to the bracket region in the body region of the back plate.