Centering Sleeve Interlocking Seal for High Cardanic Angles
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Solution Overview
Problem
Existing centering sleeves with elastomer spring elements and sealing lips fail to maintain a reliable seal at high cardanic angles due to the sealing lip lifting, and their complex manufacturing processes and use of adhesives increase production costs.
Innovation Solution
The centering sleeve features an inner bushing with passages that allow the elastomer spring element to interlock with the inner bushing, ensuring the sealing lip remains fitted even at high cardanic angles without the need for adhesives, achieved through the elastomer passing through and surrounding the passages, providing a consistent sealing function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a bonding agent is used to bond the spring element with the bushings, then connection strength is improved, but production costs increase
Solution Approach 1:
The elastomer spring element creates its own mechanical interlocking connection by passing through the passages in the inner bushing. The elastic deformation during assembly provides self-retention, eliminating the need for external bonding agents and reducing production costs while maintaining strong connection.
Solution Approach 2:
The elastomer material undergoes color or transparency changes during vulcanization and assembly that indicate proper interlocking with the passages, providing visual feedback for quality control without requiring additional bonding materials.
2Reliability
If the spring element is vulcanized to the bushings, then connection reliability is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The elastomer spring element is inserted through passages in the inner bushing, creating a nested interlocking structure. This simplifies the manufacturing process by eliminating separate vulcanization steps while maintaining reliable connection through mechanical interlocking.
Solution Approach 2:
The invention extracts the complex vulcanization process and replaces it with a simpler mechanical interlocking mechanism through the passages. The elastomer's elastic properties provide sufficient connection reliability without requiring complex bonding processes.
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
This design ensures a reliable sealing function at high cardanic angles while reducing manufacturing costs by eliminating the need for adhesives and simplifying the manufacturing process, maintaining radial and cardanic rigidity with a consistent fit.
Implementation Method 1
a spring element (16) made of an elastomer is arranged between the inner bushing (12) and the outer bushing (14)
Data Source
AI summary
A centering sleeve for bearing and centering a shaft end includes an inner bushing having passages. An outer bushing surrounds the inner bushing. A spring element made of an elastomer is arranged between the inner bushing and the outer bushing. The spring element has a sealing lip. The elastomer passes through the passages of the inner bushing so as to create an interlocking connection between the spring element and the inner bushing.