Pressure Buffer Stop With Structured Surface Reduces Stick-Slip Noise
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Solution Overview
Problem
Conventional pressure buffer stops in vibration dampers often cause noise pollution due to the physical effect of stick-slip during relative movements, which is not effectively addressed by existing solutions.
Innovation Solution
A pressure buffer stop with a three-dimensionally structured surface and clamping elements is designed to be partially received in a dome bearing housing, featuring a hollow-cylindrical basic structure on the piston rod, which reduces noise emission by influencing the stick-slip effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional pressure buffer stop is used in a vibration damper, then the deflection path is limited, but noise pollution occurs due to the stick-slip effect during relative movements
Solution Approach 1:
The pressure buffer stop features a three-dimensionally structured surface with varying local properties (protrusions and recesses) that create different friction characteristics across the contact surface, reducing the stick-slip effect and associated noise pollution during relative movements between the pressure buffer stop and dome bearing
Solution Approach 2:
The invention changes the surface parameter of the pressure buffer stop by introducing a three-dimensionally structured surface topology with specific protrusion and recess dimensions, which modifies the friction characteristics and eliminates the noise-causing stick-slip phenomenon while maintaining the deflection path limitation function
2Loss of time
If pressure buffer stops are designed for rapid replacement, then maintenance time is reduced, but structural complexity increases
Solution Approach 1:
The pressure buffer stop is designed as a separable component with a distinct three-dimensionally structured surface section that can be independently replaced, allowing rapid maintenance without disassembling the entire vibration damper system, thus reducing replacement time while managing structural complexity through modular design
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 solution effectively reduces noise pollution by minimizing the jerky sliding action between components, allowing for rapid and variable replacement of pressure buffer stops, thereby improving the performance of vibration dampers.
Implementation Method 1
A main cause of the noise problem is considered to be the physical effect of stick-slip. This refers to the jerky sliding action of solid bodies which are moved with respect to each other.
Data Source
AI summary
A pressure buffer stop for a vibration damper that comprises for being at least partially received in a dome bearing housing an outer contour and for coaxial arrangement on a piston rod of the vibration damper a hollow-cylindrical basic structure with an inner contour, wherein the outer contour of the pressure buffer stop comprises in at least one region for being at least partially received in the dome bearing housing a three-dimensionally structured surface.