7-Shaped Seal Ring With Disc Spring for Stable Radial Preload
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Solution Overview
Problem
Existing sealing rings face challenges in maintaining consistent radial preload and durability across various diameters and installation situations, especially in external sealing systems, where assembly and positioning can be complex and prone to errors.
Innovation Solution
A sealing ring design featuring a plate spring-shaped clamping element with a specific angle configuration, allowing for omnidirectional use and easy production, which stabilizes the sealing leg and maintains consistent contact pressure regardless of the sealing lip's position, and incorporates a dirt lip for enhanced contamination protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a separately produced clamping element is integrated in the sealing leg, then the sealing leg is stabilized in the radial direction, but the assembly complexity increases and positioning errors may occur
Solution Approach 1:
The clamping element is merged with the sealing leg to form an integrally formed component. The clamping element and sealing leg are produced as a single piece through co-molding or integral forming processes, eliminating the need for separate assembly steps and reducing positioning errors while maintaining radial stability.
Solution Approach 2:
The integrally formed clamping element and sealing leg combination serves multiple functions: it provides radial clamping force, maintains sealing leg stability, and integrates the clamping function directly into the sealing structure, reducing the need for additional separate components.
2Adaptability or versatility
If the clamping element is arranged in various positions, then adaptability to different sealing systems is improved, but determining the optimal position becomes complex
Solution Approach 1:
The integrally formed clamping element and sealing leg design provides universal applicability to both internal sealing systems (where the sealing lip contacts the shaft) and external sealing systems (where the sealing lip contacts the housing), eliminating the need for different configurations and simplifying position determination.
3Adaptability or versatility
If the sealing ring is designed for omnidirectional use, then versatility is improved, but the design complexity increases
Solution Approach 1:
The integrally formed clamping element and sealing leg combination utilizes asymmetric geometry where the clamping element's shape and positioning are optimized to provide functional equivalence in both installation orientations. The asymmetric design allows the same component to function correctly whether installed with the sealing lip facing upward or downward.
4Stability of the object's composition
If a tensioning element is provided to stabilize the sealing leg, then radial preload consistency is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The clamping element is merged with the sealing leg to form an integrally formed component that inherently provides the tensioning function. The integral design eliminates the need for separate tensioning elements while maintaining consistent radial preload through the unified structural geometry and material properties.
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 sealing ring achieves consistent performance and durability by maintaining constant radial preload and effectively sealing large diameters with reduced assembly complexity and risk of errors, while being cost-effective and adaptable to both internal and external sealing systems.
Implementation Method 1
A sealing ring design featuring a plate spring-shaped clamping element with a specific angle configuration, allowing for omnidirectional use and easy production, which stabilizes the sealing leg and maintains consistent contact pressure
Data Source
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AI summary
A sealing ring, which in cross-section is 7-shaped, comprising an axial leg (1) and a sealing leg (2) with a sealing lip (3), wherein the sealing leg (2) is connected to a first end face (5) of the axial leg (1) by means of a joint (4), and a clamping element (6) for stabilizing the sealing leg (2) in the radial direction (7). The clamping element (6) is annular and, in cross-section, is formed by a disc spring (8), wherein the spring (8) is connected to the sealing leg (2).