Emergency Door Blocking Mechanism for Fast Double-Acting Lockdown
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing door securing systems for double acting doors are impractical for emergency situations due to their slow operation and incompatibility with flexible or lightweight doors, and barricade bars require significant effort and time to secure.
Innovation Solution
A device with blocking members that can quickly switch between unsecured and secured orientations using an emergency actuator, security latch, and biasing mechanisms, allowing rapid door locking and integration with alarm systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lock is mounted directly on the door and a deadbolt is moved into a latch bore, then the door can be secured, but the system is slow to operate and requires significant alignment time
Solution Approach 1:
The lock mechanism is extracted from the door and mounted on the door frame instead. The blocking member is positioned in the door frame's latch bore, eliminating the need for alignment between a moving door and a fixed latch bore, thereby removing the time-consuming alignment step while maintaining door securing capability
Solution Approach 2:
A blocking member is introduced as an intermediary element that physically blocks the door opening when positioned in the latch bore. This blocking member can be quickly deployed without requiring precise alignment, serving as a mediator between the door and the frame to achieve rapid securing
2Reliability
If barricade bars are used to extend across the door frame width, then the door can be secured, but significant effort and time are required to secure the door
Solution Approach 1:
The blocking member is segmented into multiple functional components: a blocking portion for physical obstruction, a shaft for actuation, and integration with spring mechanisms. This segmentation allows each component to perform its specific function efficiently, reducing the overall effort required compared to manipulating a single large barricade bar
Solution Approach 2:
The spring mechanism provides self-service by automatically biasing the blocking member into the secured position. When the actuator is released, the spring automatically returns the blocking member to block the door, eliminating the need for continuous manual effort to maintain the secured state
3Strength
If a lock system is designed for rigid doors, then secure locking is achieved, but lightweight or flexible doors cannot be mounted with locks directly
Solution Approach 1:
The locking function is segmented and relocated to the door frame, separating the strong anchoring function (in the rigid frame) from the door itself. This allows the locking mechanism to maintain its strength while becoming compatible with doors of any weight or flexibility, as the mechanism no longer needs to be mounted on the door
Solution Approach 2:
The blocking member system serves multiple functions: it provides secure locking for rigid doors, works with lightweight flexible doors, and can be actuated through various mechanisms (manual actuator, emergency release, automated systems). This multi-functionality makes the system universally applicable to different door types while maintaining strong securing capability
Data Source
AI summary
A device for securing a door including a blocking member and an emergency actuator. The blocking member is configured to be located adjacent to the door and to move between a blocking member unsecured orientation and a blocking member secured orientation. The door is free to open and close when the blocking member is in the blocking member unsecured orientation. The blocking member moves from the blocking member unsecured orientation to the blocking member secured orientation when the emergency actuator is actuated. The door is prevented from opening when the blocking member is in the blocking member secured orientation.