Segmented Door Seal Lip for Irregular Floor Conformity
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Solution Overview
Problem
Existing door and window seals fail to provide consistent high insulation and soundproofing, especially with irregular or uneven floor profiles, and are difficult to replace when worn or damaged.
Innovation Solution
A flexible seal with transverse cuts along its lip projections, allowing independent segments to conform to irregularities with low friction, and a removable design for easy replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous lip projections are used to close gaps, then sealing action is improved, but the seal cannot fully conform to irregular floor profiles and friction increases
Solution Approach 1:
The continuous lip projection is divided into multiple discrete segments along its length. Each segment can independently deflect and conform to local irregularities in the floor or threshold profile, while collectively providing continuous sealing coverage. This segmentation resolves the contradiction by enabling both conformability to irregular surfaces and maintained sealing action.
2Reliability
If lip projections conform to irregular floor profiles, then sealing effect is improved, but permanent shape alteration occurs reducing efficiency
Solution Approach 1:
Dividing the lip projection into multiple small segments allows each segment to deflect locally to match floor irregularities without causing permanent deformation to the entire structure. The segmented design distributes mechanical stress, preventing cumulative shape alteration that would occur with a continuous lip projection.
Solution Approach 2:
The lip segments are designed with specific dimensional parameters (length, thickness, spacing) that optimize their ability to deflect elastically over irregular surfaces while maintaining overall structural integrity. By carefully controlling these parameters, the seal achieves conformability without permanent deformation.
3Reliability
If seals are designed for high insulation performance, then replacement becomes difficult, but worn seals need quick replacement
Solution Approach 1:
The seal is designed as a modular assembly with the lip projection segments separable from the main body. This segmentation enables the lip segments to be replaced independently when worn, without requiring removal of the entire seal assembly, thus maintaining high insulation performance while enabling easy maintenance.
Solution Approach 2:
The lip projection segments are designed to be extractable from the seal body, allowing them to be removed and replaced separately. This extraction capability enables quick replacement of worn sealing elements while preserving the invested insulation performance of the main seal structure.
4Reliability
If continuous sealing edges are used, then sealing coverage is improved, but friction with irregular surfaces increases
Solution Approach 1:
The continuous sealing edge is segmented into multiple discrete lip segments that can independently deflect over irregularities. This segmentation reduces the total friction force by allowing each segment to follow the surface contour with minimal resistance, rather than a continuous rigid edge dragging across irregularities.
Solution Approach 2:
The lip segments are designed to be dynamically flexible, allowing them to deflect and adapt to surface irregularities in real-time as the door moves. This dynamic behavior reduces friction compared to a static continuous sealing edge, while maintaining comprehensive sealing coverage.
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 seal maintains high insulation and soundproofing performance across various floor profiles and extends its effectiveness through multiple use cycles, with easy replacement when needed.
Implementation Method 1
a seal for door or window leaves, particularly for hinged doors, sliding doors, windows or frames, comprising a profile made of a flexible material
Implementation Method 2
said at least one lip projection having a plurality of substantially transverse cuts uniformly arranged along the entire longitudinal extent of the projection, and defining a plurality of independent flexible segments, which are adapted to allow the seal to fit the irregularities of the floor or the threshold with low friction
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A seal for doors and windows (S), comprising a profile (2) made of a flexible material which is designed to be applied to an edge (B) of a door or window leaf (A), the profile (2) having an elongate connecting portion (3) with a longitudinal axis (L) from which at least one lower lip projection extends (4) to interact with the floor (P) or the threshold of the leaf (A). The lip projection (4) has a first series of substantially transverse cuts (5) uniformly arranged along the entire longitudinal extent (l4) thereof, and defining a plurality of independent flexible segments (6), which are adapted to allow the seal (1) to fit the irregularities of the floor (P) or the threshold (A) with low friction. A sealing device for door and window leaves.