Multi-Leg Window Sill Sealing Profile for Watertight Connections
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Solution Overview
Problem
Existing sealing arrangements between window sills and frames are inadequate in providing a watertight seal, particularly at the connection areas, leading to potential water ingress.
Innovation Solution
A sealing profile with a first and second profile leg, where the first leg forms sealing contacts with the window sill and frame flanges, and the second leg provides additional sealing against the underside of the window frame and upper end of the sill flange, using elastomeric plastics with varying hardness for enhanced flexibility and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-compressed sealing tapes are arranged between the window sill flange and the frame flange, then the connection is sealed, but the sealing is insufficient to prevent water ingress through the underside of the frame and upper end of the sill
Solution Approach 1:
The sealing profile is divided into two separate legs: a first profile leg that seals between the window sill flange and frame flange, and a second profile leg that seals against the underside of the frame and upper end of the sill flange. This segmentation allows each leg to address specific sealing needs, comprehensively preventing water ingress from multiple directions.
Solution Approach 2:
The sealing solution extends from a single-plane sealing approach to a multi-dimensional sealing system. The second profile leg protrudes forward from the first profile leg along the transverse axis, creating sealing contacts in additional spatial dimensions (underside of frame and upper end of sill), thereby blocking water ingress paths that a single-leg profile cannot address.
2Reliability
If a sealing profile with multiple profile legs is used to provide comprehensive sealing, then water ingress is prevented, but the structural complexity increases
Solution Approach 1:
Two separate sealing functions are merged into a single integrated sealing profile component. The first and second profile legs are connected as one piece, combining multiple sealing contacts (between flanges, against underside of frame, and at upper end of sill) into a unified structure that simplifies installation while maintaining comprehensive sealing effectiveness.
Solution Approach 2:
The sealing profile serves multiple sealing functions simultaneously through its two-leg design. The first profile leg provides sealing between the window sill flange and frame flange, while the second profile leg provides sealing against the underside of the frame and upper end of the sill flange, making the single component universally effective against water ingress from multiple directions.
3Adaptability or versatility
If the sealing profile is made of elastomeric plastic, then flexibility and adhesion are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The sealing profile is made from elastomeric plastic material, changing the physical parameter of material composition to achieve superior flexibility and adhesion properties. This material selection allows the profile to adapt to slight variations in installation conditions and surface irregularities, compensating for dimensional tolerances and reducing the stringency of manufacturing precision requirements.
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 achieves improved sealing by forming multiple contact points, preventing water ingress through the underside of the frame and upper end of the sill, while simplifying installation with form-fitting elements and adhesive tapes.
Implementation Method 1
the sealing profile is made of an elastic material, in particular an elastomeric plastic
Data Source
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AI summary
1. The invention relates to a sealing profile for watertight sealing of a connection area between a window sill with a window sill flange and a window frame with a frame flange, which is configured for connection with the window sill flange, wherein the sealing profile extends longitudinally along a longitudinal axis and has a first profile leg and a second profile leg, wherein the first profile leg is configured for arrangement between the window sill flange and the frame flange and has a sealing surface facing forward with respect to a transverse axis, which is configured for forming a sealing contact with the window sill flange, and a rear sealing surface opposite the front sealing surface, which is configured for forming a sealing contact with the frame flange.and wherein the second profile leg projects forward along the transverse axis from the first profile leg and has a top surface located above a vertical axis and a bottom surface opposite the top surface, wherein the top surface is configured to form a sealing contact with a bottom surface of the window frame, and wherein the bottom surface of the second profile leg is configured to form a sealing contact with an upper end of the window sill flange.