Vehicle Disc Brake Pad Clip for Noise Reduction
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Solution Overview
Problem
Disc brakes for vehicles generate abnormal noises during emergency braking due to the caliper housing coming into contact with outward protrusions of the friction pad, caused by the inertia of the caliper housing in a rotational direction.
Innovation Solution
A disc brake design incorporating a pad clip that provides elastic support between the outward protrusions and the caliper housing, using a support plate, fixedly assembling parts, and a spring to prevent direct contact and reduce noise, with the pad clip being coated with Teflon to prevent corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the caliper housing directly contacts the outward protrusions of the friction pad, then the structure is simple, but abnormal noises are generated during emergency braking
Solution Approach 1:
A pad clip is introduced as an intermediary component between the caliper housing and the outward protrusions of the friction pad. The pad clip includes a support plate, fixedly assembling parts, and a spring that provides elastic support, preventing direct contact between the caliper housing and protrusions while reducing rattle noises during emergency braking.
2Object-generated harmful factors
If a pad clip with elastic support is added, then rattle noises are reduced, but the device complexity increases
Solution Approach 1:
The pad clip utilizes a spring component that provides flexible elastic support between the caliper housing and the friction pad protrusions. This flexible element absorbs impact forces during emergency braking, reducing rattle noises while maintaining a relatively compact and simple overall structure.
3Device complexity
If the friction pad slides directly against the caliper housing, then the mechanism is simple, but corrosion occurs without protective coating
Solution Approach 1:
The pad clip is coated with Teflon (polytetrafluoroethylene), creating a composite structure that combines the mechanical properties of the metal clip with the corrosion-resistant and low-friction properties of the Teflon coating. This protects the friction pad and caliper housing from corrosion while maintaining smooth sliding operation.
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 pad clip effectively reduces rattle noises by providing stable elastic support, maintaining a sliding support surface contact and guiding smooth sliding operations, thereby minimizing noise during braking and emergency maneuvers.
Implementation Method 1
a spring configured to bend and extend from the edge of the support plate and located between the fixedly assembling parts to provide elastic support between the support plate and the caliper housing
Implementation Method 2
The pad clip may be coated with Teflon to prevent corrosion
Implementation Method 3
a disc brake for vehicle is an apparatus configured to brake a wheel using friction pads to press both sides of a disc rotating with the wheel
Data Source
AI summary
Disclosed herein is a disc brake for vehicle. The disc brake for vehicle according to the embodiment includes a pair of friction pads disposed at both sides of a disc, a caliper housing and a piston configured to press the pair of the friction pads against the disc, and a moving guide configured to guide movement of the pair of the friction pads pressed against the disc by the caliper housing and the piston, wherein the moving guide may include a pair of guide arms disposed at both outer sides of the caliper housing and integrally connected by a steering knuckle of a vehicle, and the friction pad may be slidably supported by the guide arms using a pair of outward protrusions provided at both sides of the friction pad such that the friction pad extends between the pair of the guide arms and the caliper housing and further include a pad clip assembled with the outward protrusion to provide elastic support between the outward protrusion and the caliper housing.