Sliding Door Sealing Assembly for Sound and Smoke Leakage
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Solution Overview
Problem
Sliding doors experience sound and smoke leakage between the upper ends of the movable and fixed parts, and incomplete sealing due to structural and aesthetic limitations, as well as issues with one-sided guide channel seals and offset sealing planes, which compromise the isolation of spaces on either side of the door.
Innovation Solution
A sliding door design featuring a first seal at the upper end with a seal housing, weatherstrip, and actuator, lateral second seals in grooves or slots, and a lowerable floor seal with a reinforcement and positioning element to create a guide channel, along with a fourth seal to bridge offset sealing planes, ensuring comprehensive sealing and soundproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a sliding door is designed with a simple structure for ease of manufacture and installation, then manufacturing cost and complexity are reduced, but sound and smoke leakage occurs between the upper ends of the movable and fixed parts
Solution Approach 1:
The patent employs a weatherstrip seal comprising a flexible sealing element that can deform to create an effective seal between the movable and fixed parts of the sliding door. The flexible nature of the sealing element allows it to conform to slight irregularities in the door surfaces while maintaining contact pressure to prevent sound and smoke leakage.
Solution Approach 2:
The sealing system is divided into multiple segments including a seal housing, weatherstrip, actuator, and stop member. This segmentation allows each component to be optimized independently for its specific function while collectively achieving the overall sealing objective without requiring complete redesign of the entire door structure.
2Object-affected harmful factors
If a seal mechanism is added to achieve tight sealing at the upper end, then sound and smoke transmission is prevented, but device complexity increases
Solution Approach 1:
The actuator mechanism is designed to be automatically triggered by the door's own movement during closing. As the movable part approaches the fixed part, the door's motion itself activates the actuator to deploy the weatherstrip seal, eliminating the need for separate control systems or manual intervention while achieving reliable sealing.
Solution Approach 2:
The weatherstrip acts as an intermediary element between the movable and fixed parts of the sliding door. This intermediate sealing component bridges the gap between the two door parts, providing the necessary acoustic and smoke barrier without requiring direct modification of either the movable or fixed door structure.
3Object-affected harmful factors
If sealing strips are attached to seal lateral end faces, then lateral sealing is achieved, but reliable sealing in every position cannot be guaranteed due to non-parallel surfaces
Solution Approach 1:
The weatherstrip incorporates a flexible sealing element that can deform and adapt to non-parallel surfaces between the movable and fixed door parts. This flexibility ensures continuous contact and effective sealing even when the door surfaces are not perfectly parallel, maintaining lateral sealing reliability across all door positions.
Solution Approach 2:
The sealing system transitions from a static sealing strip to a dynamic weatherstrip that can move and deform. The flexible sealing element within the weatherstrip adjusts its shape and position dynamically to maintain contact with the door surfaces, ensuring reliable lateral sealing regardless of surface irregularities or door position variations.
4Object-affected harmful factors
If multiple sealing components are added to achieve comprehensive sealing at upper end, sides, and bottom, then complete isolation of spaces is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The weatherstrip assembly is designed as a multi-functional sealing component that simultaneously addresses upper end sealing, lateral sealing, and smoke prevention. By consolidating multiple sealing functions into a single integrated component rather than using separate sealing strips for each function, the overall system complexity is reduced while achieving comprehensive space isolation.
Solution Approach 2:
The patent merges the upper end seal, lateral seals, and smoke seal into a single integrated weatherstrip assembly. This consolidation combines multiple sealing functions that would otherwise require separate components, simplifying the overall sealing system while ensuring complete isolation of spaces on either side of the sliding door.
Data Source
Figure 1~2
Figure 3~3a
Figure 4~7
AI summary
The door has a fixed part (1,6,7), a mobile part and a seal. The seal is formed to seal the upper end of the mobile part with the fixed part. A seal housing (8) has a movable seal strip (9) attached in the seal housing, a release for releasing a movement of the seal strip and a stop element for the release. An independent claim is also included for a seal, particularly base seal, for a sliding door.