Water Drain Sealing Insert With Restoring-Force Sealing Lips
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Solution Overview
Problem
Existing sealing inserts for water drains lack stability and restoring force, leading to inadequate sealing performance, particularly during installation and maintenance.
Innovation Solution
The design features conical jacket sections that taper towards the collar, with sealing lips that deform during installation and exhibit a high restoring force, ensuring a consistent sealing pressure. The sealing lips are supported by bead-like thickenings to prevent bending and ensure elastic recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the sealing lips are made narrow with the same cross section, then the device complexity is reduced, but the stability and sealing performance deteriorate
Solution Approach 1:
The side wall is designed with varying thickness along its height, creating local quality variations. The lower section has greater thickness to provide stability and support for the sealing lips, while the upper section can be thinner. This non-uniform thickness distribution optimizes both structural stability and sealing performance without excessive complexity.
Solution Approach 2:
The sealing lips are designed with a three-dimensional contour that is not uniform along their length. The cross-sectional shape and dimensions of the sealing lips vary along their height, creating a tapered or contoured profile that enhances stability and sealing effectiveness while maintaining reasonable structural complexity.
2Force
If the sealing lips have high restoring force, then the sealing pressure is improved, but the resistance during insertion increases
Solution Approach 1:
The sealing lips are designed with elastic properties that allow them to dynamically adapt during insertion and operation. During insertion, the lips deform elastically to accommodate the opening, and during operation, they exert restoring force to maintain sealing pressure. The elastic modulus and geometry are optimized to balance insertion ease with sealing effectiveness.
3Reliability
If the sealing lips are deformed during insertion, then the sealing contact is improved, but the structural integrity may deteriorate
Solution Approach 1:
The side wall structure incorporates sufficient thickness and structural support beforehand to cushion and absorb the deformation stresses that occur during insertion. This pre-designed structural capacity prevents permanent damage or loss of integrity while allowing the necessary elastic deformation for proper sealing contact.
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 configuration provides increased stability and sealing efficiency, with higher resistance during insertion and lower resistance during removal, enhancing the sealing insert's performance and durability.
Implementation Method 1
the outer, elastomeric wall layer 11 with three sealing lips 3, 3 ', 3" lying one above the other... the sealing lips are deformed in their outer area in the opposite direction to the direction of insertion... the initially deformed, elastic sealing lip can return to its original shape as a result of the restoring force
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
The invention relates to a sealing insert (100), comprising: a ring body (1), which has a side wall (9) and a peripheral collar (13), at least one sealing lip (3, 3', 3"), which is arranged on the side wall (9) and points outward, wherein the sealing lip (3, 3', 3") has a conical contour (K) ending in a vertex (8) in a longitudinal-axis section (Q) through the sealing insert (100), which contour transitions into an outer lateral surface (M) of the ring body (1). According to the invention, the outer lateral surface has at least one sealing lip (3, 3', 3") having a cone lateral-surface segment (7, 7') adjoining said sealing lip (3, 3', 3"). The one or more cone lateral-surface segments (7, 7') are tapered in the direction of the peripheral collar (13). At least one peripheral, bead-like bulge (5), which transitions into the sealing lip (3', 3"), can adjoin the cone lateral-surface segment (7, 7').