Integrated Door Closure Frame for Space-Saving Fire Protection
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Solution Overview
Problem
Existing closure systems for door openings protrude significantly from the wall, require complex and costly structures, and necessitate oversized fire doors, leading to inefficient space utilization and increased manufacturing costs.
Innovation Solution
A closure system where the quick-opening door is installed within the door opening, sharing vertical uprights and a rearward cover with the fire door, forming a common perimeter frame, allowing both doors to operate independently without interference and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a door closing system uses a cam mechanism with a closing force of at least 15 daN, then the door can be reliably closed even when slightly ajar, but the risk of finger entrapment and injury increases
Solution Approach 1:
A finger protection device is introduced as an intermediary component between the door and the closing mechanism. This device includes a protection element that can be inserted into the gap between the door and door frame to prevent finger entrapment, while still allowing the high closing force to be applied when needed
Solution Approach 2:
The system performs preliminary detection of the door's position and state before applying the closing force. Sensors detect whether the door is slightly ajar or fully open, and only apply the high closing force (at least 15 daN) when necessary, while maintaining safety features ready to prevent entrapment
2Reliability
If a door closing system applies high closing force to ensure the door is fully closed, then sealing and security are improved, but the force required to open the door increases
Solution Approach 1:
The closing force is made dynamic rather than constant. The system adjusts the closing force based on the door's position and the detected state, applying high force (at least 15 daN) only when the door is slightly ajar and needs to be fully closed, while reducing force when the door is already properly positioned
Solution Approach 2:
The system incorporates sensors that provide feedback on the door's position and closing state. This feedback allows the control system to adjust the closing force in real-time, applying maximum force only when necessary to ensure proper sealing and security, while avoiding excessive force that would make opening difficult
3Loss of time
If a door closing system is designed to automatically close doors in emergency situations, then safety response time is reduced, but the system complexity increases
Solution Approach 1:
The door closing system is designed to perform multiple functions: normal closing operation, emergency closing, and finger protection. By making the system multi-functional, the same basic mechanism handles both routine and emergency situations, reducing the need for separate dedicated systems for each function
Data Source
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AI summary
A closure system for door openings defined in a wall (P) and comprising:-a quick-opening door (1) adjustedly installed within the door opening (H) and featuring a flexible roll-up sheet (11), an upper casing (12), and vertical uprights (3) equipped with guides (31) for the displacement of the flexible sheet (11); a fire door (2) installed at one side of the wall and comprising at least one fireproof layer (21, 23), for the opening and closure of the door opening (H), a perimeter frame constituted by the vertical uprights (3) and a rearward fireproof cover (4) of the upper casing (12) of the quick-opening door (1).