Sliding Ring with Elastic Seal for Grinding Device
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Solution Overview
Problem
Conventional sliding rings for grinding devices with suction hoods fail to maintain a constant airtight seal on uneven surfaces, leading to reduced holding force and instability, as they compromise between sealing and sliding properties.
Innovation Solution
A sliding ring with an elastic component and a sliding component, where the elastic component is elastically deformable to adapt to surface unevenness, ensuring a stable seal and improved sliding properties through favorable friction coefficients, and a hard component for support, allowing for a consistent negative pressure and reduced force requirement for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a sliding ring made of solid and rigid material is used, then dimensional stability is improved, but tightness on uneven surfaces deteriorates
Solution Approach 1:
The sliding ring is constructed as a composite component with a rigid base body providing dimensional stability and an integrated elastic sealing profile (silicone lip) providing adaptability to uneven surfaces. This composite structure resolves the contradiction by combining materials with complementary properties - the rigid portion maintains shape while the elastic portion ensures continuous sealing contact.
Solution Approach 2:
Different regions of the sliding ring have different material properties: the main body is rigid for stability, while the sealing profile is elastic for adaptation. This local differentiation of material quality allows each region to perform its specific function optimally without compromising the other.
2Reliability
If an elastic sealing profile is used, then tightness on uneven surfaces is improved, but sliding properties deteriorate
Solution Approach 1:
The sliding ring features localized functional zones: the sealing profile area has elastic properties for tightness, while the remaining sliding surface maintains rigid characteristics with favorable friction coefficients for easy sliding. This spatial separation of properties resolves the contradiction between sealing and sliding performance.
Solution Approach 2:
The composite construction with rigid base material and elastic sealing overlay enables simultaneous achievement of good sliding properties (from the rigid low-friction surface) and reliable sealing (from the elastic adapting profile).
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 sliding ring provides a reliable, constant suction effect that securely holds the grinding device on uneven surfaces, reducing user effort and maintaining effective dust extraction with lower suction force, enhancing both sealing and sliding performance.
Implementation Method 1
The elastic component is elastically deformable to adapt to surface unevenness
Implementation Method 2
The suction device can also be used to generate a vacuum, which causes the head to adhere to a surface to be ground
Implementation Method 3
The sliding ring is made of a slidable, solid and rigid material so that it remains dimensionally stable when working with the grinder
Data Source
AI summary
A sliding ring for a grinding device consisting of a grinding element and a hood covering the grinding element and a sliding ring attachable to the side of the hood facing a surface to be machined, the sliding ring having a sliding surface provided for sliding on the surface to be machined, the sliding ring consisting of at least one elastic component and a sliding component, the sliding surface being formed on the sliding component and the elastic component being arranged on the side of the sliding component opposite the sliding surface.