Sealing Profile Parallelogram Articulation Restoring Force
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Solution Overview
Problem
Existing sealing profiles for frame profiles face challenges in maintaining reliable seals with sufficient restoring forces over time, as thin-walled sealing lips have low restoring forces that decrease with time, and foamed material-based profiles experience high closing forces due to shear forces.
Innovation Solution
A sealing profile with a bead-shaped sealing projection on the second wall, pivotably mounted relative to the first wall via intermediate walls, providing increased mobility and elasticity through a parallelogram-like articulation, and incorporating hollow chambers filled with compressible material to adjust restoring forces, while maintaining thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If thin-walled sealing lips are used, then mobility is improved, but restoring forces become low and decrease over time
Solution Approach 1:
The sealing profile employs a dynamic structure where the second wall with the bead-shaped sealing projection is pivotably mounted relative to the first wall via intermediate walls, creating a parallelogram-like articulation that allows controlled movement while maintaining structural integrity and consistent restoring forces over time
Solution Approach 2:
The sealing profile combines multiple materials including thermoplastic elastomer for the profile structure, silicone rubber for the bead-shaped sealing projection, and optionally foamed material in hollow chambers, creating a composite structure that achieves both mobility and durable restoring forces
2Strength
If foamed material-based solid profile is used, then restoring forces are provided, but closing forces become excessively high due to shear forces
Solution Approach 1:
The pivotable mounting of the second wall relative to the first wall via intermediate walls creates a dynamic articulation mechanism that reduces shear forces during closing movements, allowing the bead-shaped sealing projection to move smoothly without generating excessive closing forces while still providing adequate restoring forces
Solution Approach 2:
The patent adjusts the physical parameters of the sealing profile by using specific material combinations (thermoplastic elastomer, silicone rubber, foamed material) and structural configurations (hollow chambers, partition walls) to optimize the balance between restoring forces and closing forces
3Strength
If multiple partition walls are added to increase elasticity, then restoring forces are improved, but device complexity increases
Solution Approach 1:
The sealing profile is segmented into functional zones using partition walls that divide the hollow chambers, with each partition serving a specific purpose (some connected to both first and second walls for restoring force, others connected to only one wall for thermal insulation), achieving enhanced performance without excessive complexity
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 solution ensures reliable seals with higher restoring forces that remain consistent over time, effectively bridging larger closing paths and improving thermal insulation without excessive tensile loads on the foot part.
Implementation Method 1
The sealing profile is designed as a hollow chamber profile through the partition walls, an easily compressible material or a fluid, in particular air, being provided in the hollow chambers. The elasticity of the sealing profile in the closing direction is increased by the hollow chambers
Implementation Method 2
the second wall with the bead-shaped sealing projection is pivotably mounted relative to the first wall via the intermediate walls. This results in sufficient mobility of the bead-shaped sealing projection via the parallelogram-like articulation of the partition walls on the first wall
Implementation Method 3
a bead-shaped sealing projection being formed on the second wall. The bead-shaped sealing projection can be compressible to a certain extent due to the elasticity of the material
Data Source
Figure 1A~1B
Figure 2A
Figure 2B
AI summary
A sealing profile (6) for a frame profile (2, 2', 3, 3'), in particular a center seal, comprises a first wall (61) on which a base (60) is formed for fixing to a frame profile (2, 2', 3, 3'), and a second wall (62) which is spaced apart from the first wall (61) and is connected to the first wall (61) via several intermediate walls (63, 64, 65, 66), wherein a bead-shaped sealing projection (69) is formed on the second wall (62) and the second wall (62) with the bead-shaped sealing projection (69) is pivotably mounted relative to the first wall (61) via the intermediate walls (63, 64, 65, 66). The pivotable mounting of the sealing projection ensures sufficient restoring forces even with a larger pivoting range of the sealing projection.