Metal-Elastomer Sealing Gasket With Edge Bead for Leak Durability
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Solution Overview
Problem
Existing sealing gaskets with partially coated surfaces are easily removable and susceptible to damage, leading to reduced durability and potential leakage, especially in heavy-duty vehicles.
Innovation Solution
A sealing gasket design featuring a metal outer flange, inner flange, and elastomer seal, where the seal protrudes from the inner edge of the outer flange, providing secure attachment and enhanced durability, with the inner flange applying load to a shim that stabilizes the bearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the seal is provided only on flat surfaces, then the manufacturing is simple, but the seal is easily removable and susceptible to damage
Solution Approach 1:
The seal is applied on the inside edge which forms a bead with a curved cross-section, rather than on flat surfaces. This curved geometry provides mechanical interlocking between the seal and the bead, preventing the seal from being easily removed or damaged while maintaining manufacturing simplicity through integral formation of the bead with the outer flange
2Reliability
If the seal covers the entirety of the two surfaces of the outer part and inner part, then the sealing capability is satisfactory, but the amount of sealing material used is excessive
Solution Approach 1:
The seal is concentrated on the inside edge forming a bead rather than being distributed across the entire flat surfaces. This localized placement provides effective sealing at the critical interface between the outer flange and the mating surface, reducing the total amount of sealing material needed while maintaining satisfactory sealing capability
3Reliability
If the seal is provided on the inside edge protruding from the surfaces, then the seal durability is enhanced, but the device complexity increases
Solution Approach 1:
The bead forming the inside edge is integrally formed with the outer flange as a single piece, rather than being a separate component. This merging of the bead with the outer flange enhances seal durability by providing a robust mounting surface for the seal, while avoiding the complexity of assembling separate bead and flange components
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 design ensures effective sealing and durability, preventing leakage and damage, while reducing the amount of sealing material used, and allowing easy manufacturing and integration with various objects.
Implementation Method 1
a seal, made of elastomer, provided on the inside edge and protruding from the first surface and the second surface
Implementation Method 2
the inner flange exerts a load on the shim, which in turn exerts a load on the bearing
Data Source
Figure 1
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AI summary
A sealing gasket (10), comprising an outer flange (21), an inner flange (22), and a seal (24). The outer flange (21) comprises a first surface (28) and a second surface (29), parallel to the first surface (28) and comprises a first opening (35), centered on a first opening axis (X35), wherein said first opening (35) is ringed by an inside edge (36) of the outer flange (21), connecting the first surface (28) and the second surface (29). The inner flange (22), is arranged inside the first opening (35) and the inner flange (22) is connected to the outer flange (21) through at least one junction tab (23), the inner flange (22), the outer flange (21) and each junction tab (23) being made of metal. The seal (24), is made of elastomer, provided on the inside edge (36) and protrudes from the first surface (28) and the second surface (29).