Sliding Sash Sealing Structure for Leak-Tight Room Openings
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Solution Overview
Problem
Conventional sliding sash devices for closing room openings suffer from leaks due to gaps between the sash and guide, leading to air infiltration, and existing sealing methods like brushes are unsatisfactory, while lever mechanisms are complex and impractical for large doors, also reducing the viewing area.
Innovation Solution
A closing device with a frame embedded in the reveal of the room opening, featuring a sliding sash that moves between two end positions, using a sealing system with U-shaped sealing members and holders to seal gaps between the sash and frame, allowing for fluid-tight operation without protruding guides, thus maintaining the viewing area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a gap is left between the sliding sash and guide to enable movement, then the sliding sash can move smoothly, but air leaks occur through the gap
Solution Approach 1:
The patent uses a flexible sealing element (brush or lip seal) that can deform to maintain contact with the guide surface while allowing the sliding sash to move. The flexible material adapts to the gap variations during movement, sealing the opening effectively without restricting the sliding motion.
2Object-affected harmful factors
If brushes are used to seal the gap, then air leakage is reduced, but sealing effectiveness is insufficient as air flows between bristles
Solution Approach 1:
The patent employs a lip seal or flexible sealing element that forms a continuous barrier without gaps, unlike brush seals with spaces between bristles. The flexible lip conforms to the guide surface and maintains effective sealing contact throughout the sliding motion, preventing air leakage reliably.
3Object-affected harmful factors
If a lever mechanism is used to press the wing against the guide wall for sealing, then sealing is improved, but the mechanism becomes complicated and expensive
Solution Approach 1:
The patent utilizes the inherent friction and elastic deformation of the flexible sealing element to maintain sealing contact during sliding motion. The sealing element naturally conforms to the guide surface and self-adjusts during movement, eliminating the need for external lever mechanisms to apply pressure for sealing.
4Object-affected harmful factors
If mechanical displacement of a heavy sliding leaf is implemented, then sealing contact is maintained, but displacement becomes almost impossible for large door leaves
Solution Approach 1:
The flexible sealing element attached to the sliding sash can deform and conform to the guide surface without requiring significant mechanical force for displacement. This flexibility allows even heavy large door leaves to be moved easily while maintaining effective sealing contact throughout the sliding range.
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 effectively seals gaps between the sliding sash and frame, preventing air infiltration while allowing smooth operation of the sliding sash, even for large doors, without compromising the viewing area.
Implementation Method 1
sealing mechanism using deformable sealing members and holders to seal gaps between the sliding leaf and frame
Data Source
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AI summary
The device for closing a room opening has at least one panel (15) that can be movably arranged relative to a frame (2) in the reveal (3) of the room opening. It has a gap (33) between the sliding panel and the frame in the reveal that can be sealed with a hose-like sealing element (46).