Brake Caliper Spacer Isolating Plate Vibration
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Solution Overview
Problem
Automotive disc brakes experience noise due to vibration between the caliper body and the plate during braking or driving, which existing solutions fail to adequately address.
Innovation Solution
A caliper noise prevention device featuring a spacer with elastic restoring force, isolating the caliper body and plate through first and second spacer portions, which are coupled to each other and the caliper body and plate, preventing contact and noise by maintaining a space between them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the caliper body and plate are directly coupled without a spacer, then the structure is simple and manufacturing cost is low, but vibration during braking or driving causes collision between the caliper body and plate, generating noise
Solution Approach 1:
A spacer is introduced as an intermediary component between the caliper body and the plate. This spacer includes a first spacer portion contacting the caliper body and a second spacer portion contacting the plate, with a coupling piece connecting them. The intermediary spacer prevents direct contact between the caliper body and plate, thereby eliminating collision noise while maintaining structural coupling.
Solution Approach 2:
The spacer is segmented into multiple functional portions: a first spacer portion for contacting the caliper body, a second spacer portion for contacting the plate, and a coupling piece for connecting these portions. This segmentation allows each portion to be optimized for its specific function while collectively solving the noise problem through distributed elastic support.
2Object-affected harmful factors
If a rigid connector is used to couple the caliper body and plate, then structural strength is high, but vibration-induced collision still occurs causing noise
Solution Approach 1:
The spacer is designed with elastic properties, changing the mechanical parameter from rigid to flexible. This elastic characteristic allows the spacer to deform under vibration, absorbing collision energy and preventing noise while maintaining sufficient coupling strength through its material properties and geometric design.
Solution Approach 2:
The elastic spacer provides beforehand cushioning by being pre-installed between the caliper body and plate. When vibration occurs during braking or driving, the spacer's elastic restoring force acts as a cushion, preventing direct collision between the rigid components before the collision can generate noise.
3Object-affected harmful factors
If the spacer is made completely elastic to prevent noise, then noise is reduced, but the coupling strength and stability between caliper body and plate decrease
Solution Approach 1:
Different portions of the spacer have different local qualities optimized for their specific functions. The first spacer portion is designed to contact the caliper body with appropriate elasticity, the second spacer portion contacts the plate with matching properties, and the coupling piece provides structural connection. This local quality differentiation maintains coupling stability while preventing noise.
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
Effectively prevents noise between the caliper body and plate by maintaining a space using the spacer's elastic support, even during vehicle braking or driving, ensuring reduced vibration-induced contact.
Implementation Method 1
a spacer disposed between the caliper body and the plate, and isolating the caliper body and the plate from each other using its elastic restoring force
Data Source
AI summary
A caliper noise prevention device for a vehicle brake may include: a caliper body coupled to a torque member having a friction pad installed therein; a plate disposed so as to face the caliper body; a spacer disposed between the caliper body and the plate, and isolating the caliper body and the plate from each other using an elastic restoring force; and a coupling configured to couple the spacer, the plate and the caliper body to one another.