Emergency Door Lock with Delayed Unlocking Control
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Solution Overview
Problem
Traditional emergency door locks lack control over opening times, allowing unauthorized access when unguarded, posing security risks.
Innovation Solution
A door lock device with an electric control assembly that includes a base, connecting rod, sliding piece, swinging piece, driver, and sensing component, allowing for delayed unlocking by sending a control signal after a predetermined time, ensuring the door remains locked until the correct sequence is followed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional emergency door locks are used to ensure easy opening for safety, then the door can be opened freely for emergency escape, but unauthorized personnel can enter through the emergency door when unguarded, presenting security risks
Solution Approach 1:
The lock device transitions from a static locked state to a dynamic controllable state through the controller, which dynamically adjusts the locking state based on received signals. The locking component can be dynamically repositioned between locked and unlocked states, providing adaptive security control while maintaining emergency escape capability.
Solution Approach 2:
The system implements feedback control where the controller receives signals from external devices (keycards, mobile devices, intercoms) and adjusts the locking state accordingly. This feedback mechanism allows authorized personnel to unlock the door while maintaining security against unauthorized access, resolving the contradiction between ease of opening and security.
2Ease of operation
If the emergency door is designed without locking capability to satisfy safety requirements, then the door can be freely opened for emergency escape, but the door cannot be locked to prevent unauthorized access, presenting security risks
Solution Approach 1:
The controller acts as an intermediary between the push bar and the locking component. When the push bar is pressed, instead of directly unlocking the door, it sends a signal to the controller, which then decides whether to unlock based on authorization. This intermediary mechanism prevents direct unauthorized access while maintaining the ability for authorized personnel to open the door freely.
Solution Approach 2:
The patent replaces the direct mechanical connection between the push bar and locking mechanism with an electronic control system. The mechanical push action is converted into an electronic signal that triggers the controller, which then actuates the locking component electronically. This substitution enables intelligent control while preserving emergency escape functionality.
3Reliability
If a lock assembly is added to the emergency door to improve security, then unauthorized access can be prevented, but the door requires additional components and control mechanisms, increasing device complexity
Solution Approach 1:
The controller serves multiple functions: it receives various types of authorization signals (keycards, mobile devices, intercom), controls the locking component, and manages the door's locked/unlocked states. This multi-functionality consolidates what could be multiple separate components into a single integrated unit, reducing overall system complexity while providing comprehensive security control.
Solution Approach 2:
The locking component is nested within the door assembly, with the controller integrated into the same structure. The locking component can be positioned within the door frame or panel, and the push bar mechanism is integrated with the locking component. This nesting approach minimizes the space required and reduces the number of separate external components, thereby reducing structural complexity.
Data Source
AI summary
A door lock device for emergency doors is provided, in which, through a configuration of a sensing component, the actuating time can be adjusted by a driver according to demands to facilitate time-delayed unlocking.