Brake Pad Guide Openings Curved Path Radial Stability

Solution Overview

Problem

Existing brake pad designs allow for relative movement in the radial direction with respect to the brake disk, leading to potential jumping across radial offsets during braking, which compromises braking performance and feel.

Innovation Solution

The brake pad features guide openings with guiding portions that follow a common radius of guidance and center, ensuring a curved path of movement that aligns with the brake disk's curvature, preventing radial movement and enhancing brake pad alignment with the brake caliper.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If guide openings allow relative movement in radial direction, then brake pad can accommodate brake disk rotation, but brake pad jumps across radial offsets compromising braking performance

Engineering Contradiction:

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The guide openings are designed with curved guiding portions that follow a circular arc path centered on the brake disk center. This curvature matches the rotational path of the brake disk, allowing the brake pad to accommodate rotation while maintaining constant radial position and preventing jumping across radial offsets.

Inventive Principle:

Principle #14Spheroidality (Curvature)

2Stability of the object's composition

If guide openings have fixed alignment, then brake pad maintains stable position, but cannot accommodate brake disk rotation

Engineering Contradiction:

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The guide openings transition from fixed alignment to dynamic curvature that adapts to brake disk rotation. The curved guiding portions allow the brake pad to maintain stable radial position while dynamically following the rotational movement of the brake disk through the arc-shaped path.

Inventive Principle:

Principle #15Dynamics

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 significantly improves braking performance and feel by maintaining a stable, extended-area contact between the brake pad and disk, reducing the likelihood of radial movement and enhancing force dissipation, resulting in better braking efficiency.

Implementation Method 1

each of the guide openings has a guiding portion, wherein the guiding portions of all the guide openings have a radius of guidance (FR) with a common center of guidance (FM)

Methodology Applied

Scientific EffectGeometric constraint: Geometry

Data Source

PatentUS9920802B2Brake pad for fastening on a brake caliper of a vehicle braking device

Publication Date: 2018.03.20

AI summary

A brake pad (10) for fastening on a brake caliper (110) of a vehicle braking device (100), having a main body (20) and a brake lining (22) arranged over an extended area on the main body (20), wherein the main body (20) has at least two guide openings (24) to receive in each case one guide pin (112), wherein each of the guide openings (24) has a guiding portion (25), wherein the guiding portions (25) of all the guide openings (24) have a radius of guidance (FR) with a common center of guidance (FM).