Door Sealing Unit Coupled to Locking Device
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Solution Overview
Problem
Conventional building door sealing systems require complex adjustments and separate drives for sealing units, making them inefficient in sealing gaps between the door leaf and the floor or frame, and prone to drafts and noise transmission.
Innovation Solution
A coupling device integrates the locking device with the sealing unit, allowing the locking device's adjustment to automatically control the sealing unit's position, eliminating the need for a separate drive by transmitting forces mechanically, thus ensuring reliable sealing without additional mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate drive mechanism is used for the sealing unit, then the sealing assembly can be adjusted independently, but the device complexity increases
Solution Approach 1:
The patent combines the sealing unit and locking device into a single integrated assembly where the locking device serves dual functions: locking the door and actuating the sealing assembly. The coupling device mechanically links the locking mechanism to the sealing unit, eliminating the need for separate drives while maintaining coordinated operation of both functions.
2Reliability
If the sealing assembly is always extended to seal the gap, then sealing effectiveness is maximized, but the door leaf cannot move freely during opening and closing
Solution Approach 1:
The sealing assembly is designed to be dynamically adjustable between retracted and extended positions based on the door's operational state. During opening and closing movements, the sealing assembly remains retracted to allow free door movement. When the door reaches its closed position and the locking device engages, the sealing assembly automatically extends to seal the gap, providing both movement freedom and sealing effectiveness.
3Manufacturing precision
If manual adjustment of the sealing unit is required, then positioning precision can be achieved, but the ease of operation decreases
Solution Approach 1:
The sealing unit is designed to self-adjust its position automatically through the mechanical coupling with the locking device. When the locking device is actuated to lock the door, the coupling mechanism automatically moves the sealing assembly to the correct extended position. When unlocked, the sealing assembly automatically retracts. This eliminates manual adjustment requirements while maintaining precise positioning through the inherent mechanical geometry of the coupling device.
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
This integration simplifies the adjustment of the sealing unit, enhances sealing efficiency by synchronizing with the locking mechanism, and reduces complexity, ensuring effective sealing without manual intervention or additional drives, thereby improving draft and noise suppression.
Implementation Method 1
A coupling device for coupling the locking device with the sealing unit such that when the locking device is moved from the unlocking position to the locking position, the sealing assembly is moved to the second, extended position
Data Source
Figure 1
Figure 2A~3B
Figure 4A~4B
AI summary
A building door assembly (1) comprises a sealing unit (3) to be arranged on a door leaf (10), which has a housing (323) and a sealing assembly (30) movable between a first, retracted position and a second, extended position along an adjustment direction (A) relative to the housing (323) for at least partially sealing the door leaf (10) in a closed position against a floor (4) and/or a door frame (11). A locking device (2) to be arranged on the door leaf (10), adjustable between an unlocking position and a locking position, serves to lock the door leaf (10) in the closed position.Additionally, a coupling device (24) is provided, which serves to couple the locking device (2) with the sealing unit (3) such that when the locking device (2) is moved from the unlocking position to the locking position, the sealing assembly (30) is moved to the second, extended position and/or when the locking device (2) is moved from the locking position to the unlocking position to the first, retracted position.