Brake Caliper Retainer Bracket Shield Engagement

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Solution Overview

Problem

Existing brake caliper assemblies face challenges in securely positioning brake pad shields and maintaining effective friction material engagement, leading to potential noise and reduced brake pad life due to movement and contamination issues.

Innovation Solution

A brake caliper assembly incorporating a retainer bracket with specific engagement surfaces and a stiffening rib structure that secures the pad shield, providing a load force to the brake pads and inhibiting movement, thus eliminating the need for brake pad springs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional brake pad springs are used to maintain friction material engagement, then brake pad life is reduced due to movement and contamination, but the device complexity increases with additional spring components

Engineering Contradiction:

Improvebrake pad lifeVSAvoidnumber of components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent removes the brake pad spring component entirely from the brake caliper assembly. The retainer bracket is designed to directly maintain friction material engagement with the rotor through its structural configuration, eliminating the need for separate spring elements that cause movement and contamination issues.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent integrates the functions of pad retention and friction material engagement into a single retainer bracket structure. This merged component replaces the traditional separate spring and pad holder arrangement, reducing overall device complexity while maintaining reliability.

Inventive Principle:

Principle #5Merging (Combining)

2Object-affected harmful factors

If the pad shield is not securely positioned, then contamination protection is reduced, but the ease of manufacture increases with simpler positioning mechanisms

Engineering Contradiction:

Improvecontamination protectionVSAvoidpositioning mechanism complexity

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The retainer bracket is designed with distinct functional segments: a pad shield portion for contamination protection, engagement surfaces for securing the shield, and a stiffening rib structure for structural integrity. This segmentation allows each portion to be optimized for its specific function while maintaining ease of manufacture through modular design.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The retainer bracket incorporates localized engagement surfaces and stiffening ribs at specific positions to provide enhanced contamination protection where needed. The engagement surfaces are strategically positioned to secure the pad shield in critical areas, while the stiffening rib structure provides local reinforcement without requiring complex overall positioning mechanisms.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP3534030B1Brake caliper assembly having a retainer bracket

Publication Date: 2020.11.18 ARVINMERITOR TECHNOLOGY LLC

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AI summary

A brake caliper assembly (10) having a housing assembly (22), a brake pad assembly (24), a pad shield (26), and a retainer bracket (28). The retainer bracket (28) may include at least one protrusion that may engage an abutment surface of the pad shield to limit the axial displacement of the retainer bracket (28) relative to the pad shield (26).