Door Sealing Unit Vertical Gap Merging
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Solution Overview
Problem
Existing door sealing systems for double-leaf doors often fail to provide an optimal seal at the intersection of the two door leaves, resulting in a vertical gap that compromises light penetration and sound insulation.
Innovation Solution
A sealing unit with two sealing devices, each with a sealing strip and a support rail, where the end face of one sealing strip forms a sealing surface for contact with the other, allowing for adjustment to seal the vertical gap between them, utilizing a displacement module for precise positioning and a stiff end cap for enhanced sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional door gap seals are used on double-leaf doors, then the seal against the floor is sufficient, but the seal at the door face where two door leaves meet is insufficient due to vertical gaps between sealing devices
Solution Approach 1:
The invention merges the sealing functions of both door leaves by providing sealing surfaces on the end faces of both sealing devices. These sealing surfaces work together to close the vertical gap between the two sealing devices, creating a complete seal at the door face where the two door leaves meet, thereby resolving the insufficiency of conventional single-sided sealing approaches
Solution Approach 2:
The invention transitions from conventional single-surface sealing to multi-surface sealing by adding sealing surfaces on the end faces of the sealing devices in addition to the floor-contact sealing strips. This dimensional expansion of the sealing approach allows the sealing surfaces to interact and close the vertical gap between sealing devices, achieving complete sealing effectiveness
2Reliability
If sealing surfaces are added to end faces of sealing devices, then complete sealing is achieved, but the width of sealing surface may impair appearance if it protrudes from the door leaf
Solution Approach 1:
The invention applies local quality by making the sealing surface width adaptive - it corresponds at least to the width of the sealing strip when the door is open, ensuring complete sealing, but is not much greater than the sealing strip width to minimize protrusion and preserve door appearance. This localized optimization of sealing surface dimensions resolves the contradiction between sealing completeness and aesthetic appearance
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3a~3b
AI summary
The invention relates to a sealing unit for a door having at least a first and a second door leaf, which sealing unit has a first sealing device (V) for fastening to the first door leaf (S) and a second sealing device (V) for fastening to the second door leaf (G), the first sealing device (V) having an end face facing the second sealing device (V). Said end face has a sealing surface (4) for sealing contact of the second sealing device (V) in the closed state of the door. The sealing unit facilitates complete sealing in the case of two-leaf and multi-leaf doors.