Sealing Bellows Clamping Ring Structure Without Adhesion Promoters
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Solution Overview
Problem
The production of sealing bellows involves costly and environmentally harmful chemical pre-treatment of clamping rings with adhesion promoters, leading to hazardous waste and complex recycling processes, and existing solutions do not achieve optimal mechanical clawing between clamping rings and edge areas.
Innovation Solution
The clamping rings are arranged in a form-fitting manner within the edge areas of the sealing bellows without chemical bonding, with openings in the axial and radial legs distributed evenly in the circumferential direction to ensure a strong and durable connection, allowing for production without adhesion promoters and minimizing environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If clamping rings are coated with adhesion promoter for chemical bonding, then the connection strength between clamping ring and edge area is improved, but the production cost increases and hazardous waste is generated
Solution Approach 1:
The invention extracts and eliminates the adhesion promoter coating step from the manufacturing process. Instead of using chemical bonding through adhesion promoters, the patent employs pure mechanical form-fitting connection where the clamping ring geometry itself provides the bonding mechanism, thereby removing the source of hazardous waste generation
Solution Approach 2:
The invention replaces the chemical bonding system (adhesion promoter) with a mechanical bonding system (form-fitting connection). The clamping ring is designed with specific geometric features that create mechanical interlocking with the edge area, substituting chemical interaction with mechanical interaction
2Strength
If clamping rings are coated with adhesion promoter, then chemical bonding is achieved, but the production process becomes complex and expensive
Solution Approach 1:
The invention removes the adhesion promoter coating process from the manufacturing sequence, eliminating the need for chemical preparation steps, coating equipment, and associated process controls, thereby simplifying the production process
Solution Approach 2:
The clamping ring geometry is designed to create form-fitting connection automatically during the molding process without requiring external chemical treatment. The mechanical interlocking features are inherent to the ring structure itself, enabling self-bonding through the molding process
3Device complexity
If openings in axial leg and radial leg are arranged in common radial plane, then the structure is simple, but the mechanical clawing between clamping ring and edge area is not optimal
Solution Approach 1:
The invention introduces asymmetric distribution of openings between the axial leg and radial leg, breaking the symmetry of having all openings in a common radial plane. This asymmetric arrangement optimizes the mechanical interlocking by distributing engagement points strategically to maximize friction and resistance to withdrawal forces
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 approach simplifies and cost-reduces the production of sealing bellows, eliminates hazardous waste, and achieves a robust mechanical connection between clamping rings and edge areas, ensuring reliable sealing and reduced environmental pollution.
Implementation Method 1
a jacket (1) made of a rubber-elastic material... with a clamping ring (4, 5) for fastening the sealing bellows being arranged in at least one of the edge areas (2, 3)... the clamping ring, without chemical bonding, being arranged exclusively in the edge area in a form-fitting manner
Data Source
Figure 1
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Figure 3
AI summary
Sealing bellows comprising a sheath (1) made of a rubber-elastic material, which has an edge region (2, 3) on both sides at its end face, wherein a clamping ring (4, 5) for fastening the sealing bellows is arranged in at least one of the edge regions (2, 3), characterized in that the clamping ring (4, 5) is arranged in the edge region (2, 3) without chemical bonding and exclusively by positive locking.