Brake Pad Retraction Spring Structure to Prevent Disk Drag
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Solution Overview
Problem
Existing brake systems face challenges in preventing the drag phenomenon where the brake disk remains in continuous contact with the brake pad even after the braking force is released, leading to reduced operational reliability and performance.
Innovation Solution
A retraction spring with a unique design, featuring a pad coupling part, body part, and carrier support part, is coupled to the brake pad's protruding portions, providing an elastic restoring force to return the brake pad to its original position when braking is released, minimizing material waste and facilitating easy assembly and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional retraction spring design is used, then the brake pad can be returned to its original position, but the drag phenomenon occurs where the brake disk remains in continuous contact with the brake pad
Solution Approach 1:
The retraction spring is divided into distinct functional segments: a pad coupling part with first and second arms that contact the protruding portion, a body part that provides elastic restoring force, and a carrier support part that attaches to the carrier. This segmentation allows each part to be optimized for its specific function, ensuring the brake pad is fully released from the brake disk to eliminate drag while maintaining reliable operation.
2Reliability
If the retraction spring structure is made complex to improve restoring force, then the drag phenomenon can be prevented, but the manufacturing complexity and material waste increase
Solution Approach 1:
The pad coupling part, body part, and carrier support part are integrated into a single retraction spring assembly that functions as a unified elastic restoring force mechanism. This merging provides sufficient restoring force to prevent drag while avoiding the need for multiple separate components, thereby reducing manufacturing complexity and material waste.
3Ease of manufacture
If the retraction spring is designed for easy assembly and maintenance, then the manufacturing process is simplified, but the restoring force may be reduced
Solution Approach 1:
The retraction spring is segmented into a pad coupling part, body part, and carrier support part, where each segment has a clear function. The body part is designed to provide sufficient elastic restoring force through its geometry and material properties, while the coupling and support parts facilitate easy assembly and maintenance without compromising the overall restoring force capability.
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
The retraction spring effectively prevents drag by ensuring the brake pad is fully released from the disk, enhancing operational performance and reliability, while minimizing material usage and simplifying manufacturing and maintenance processes.
Implementation Method 1
a body part extending from the pad coupling part and configured to provide an elastic restoring force
Data Source
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AI summary
A retraction spring includes a pad coupling part including a first arm and a second arm contacting a front surface and a rear surface of a protruding portion of a brake pad, respectively, and a connecting portion connecting between the first arm and the second arm, a body part extending from the pad coupling part and configured to provide an elastic restoring force, and a carrier support part extending from the body part and supported by a coupling hook formed on a carrier. The first arm is bent at or from one side of the connecting portion toward the front surface, the second arm is bent at or from the other side of the connecting portion toward the rear surface, and the body part is bent from the other side of the connecting portion.