Sliding Component Projections for Low-Friction Vibration Control
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Solution Overview
Problem
Conventional sliding components experience high frictional forces and vibrations due to a close fit between inner and outer components, leading to increased assembly forces, costs, and assembly time, while also desiring weight reductions.
Innovation Solution
A sliding component with a sidewall featuring low stiffness projections capable of elastic deformation and high stiffness projections capable of plastic deformation, designed to minimize friction and vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a close fit between inner and outer components is used, then relative vibration is reduced, but frictional forces increase
Solution Approach 1:
The sliding component is segmented into multiple projections (typically 3-6 projections spaced circumferentially) that contact the inner and outer components at discrete points rather than continuous surfaces. This segmentation reduces the total contact area and thus frictional forces while still providing sufficient contact points to minimize vibration through distributed engagement.
Solution Approach 2:
The projections are designed with specific local geometric properties (radius, height, spacing) that optimize the balance between vibration reduction and friction minimization. Each projection acts as a localized contact element with controlled stiffness and contact area, providing the necessary mechanical engagement while reducing overall friction compared to a continuous close fit.
2Object-affected harmful factors
If strong and substantial contact between components is increased, then relative vibration is reduced, but assembly forces increase
Solution Approach 1:
The contact interface is segmented into discrete projection elements rather than continuous contact surfaces. This allows vibration reduction through multiple contact points while reducing the total force required for assembly since the load is distributed across fewer, smaller contact areas that can be engaged more easily.
Solution Approach 2:
The projections are designed with appropriate stiffness characteristics that allow them to deform elastically during assembly, facilitating easier installation. Once assembled, they provide sufficient rigidity to minimize vibration, thus achieving both easy assembly and vibration reduction through dynamic mechanical properties.
3Weight of moving object
If weight of components is reduced, then assembly costs and assembly time are reduced, but structural strength may be compromised
Solution Approach 1:
The sliding component uses localized material distribution with projections containing the necessary material volume at critical contact points while minimizing material elsewhere. This achieves weight reduction while maintaining structural strength where it is most needed - at the contact interfaces with inner and outer components.
Solution Approach 2:
The sliding component may utilize composite material structures or material distributions that optimize the strength-to-weight ratio. By concentrating material in the projections and using appropriate material selection, the design achieves sufficient structural strength for vibration reduction while minimizing overall component weight.
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 reduces friction and vibrations, facilitating smoother movement and assembly, while allowing for weight reduction and cost-effective manufacturing.
Implementation Method 1
at least one low stiffness projection capable of elastic deformation
Implementation Method 2
at least one high stiffness projection capable of plastic deformation
Data Source
AI summary
A sliding component including a sidewall including at least one low stiffness projection capable of elastic deformation, and at least one high stiffness projection capable of plastic deformation, where the low stiffness projection includes a radial face at an innermost or outermost surface adapted to contact a neighboring component.