Escape Lock Status Indication for Fast Emergency Unlocking
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Solution Overview
Problem
Existing door locks with complex internal structures complicate emergency unlocking during events like earthquakes or fires, and lack an indicating device to confirm latched or unlatched states, hindering timely escape.
Innovation Solution
A convenient escape lock with an indicating function, featuring a wafer lock core, rear handle, and lock tongue, equipped with a status indicator plate to show locked/unlocked states, and a universal installation structure allowing quick opening/closing for emergency escapes, including a rear quick-opening mechanism for disabled persons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex internal structures are used to improve anti-theft performance, then security is enhanced, but ease of operation during emergencies deteriorates
Solution Approach 1:
The lock mechanism is segmented into multiple independent components: wafer lock core for security, rear handle for emergency escape, and knob assembly for interior locking. Each component operates independently with its own mechanism, allowing the security function to remain complex while the emergency escape function remains simple and direct.
Solution Approach 2:
The emergency escape function is extracted from the main lock mechanism by providing a separate rear handle that directly controls the lock tongue without requiring key operation. This extraction allows users to bypass the complex internal structure during emergencies by simply pushing the rear handle to unlock and open the door.
2Device complexity
If no indicating device is provided to save structure simplicity, then device complexity is reduced, but ease of operation deteriorates due to inability to confirm latched state
Solution Approach 1:
A status indicator plate is provided that gives visual feedback about the lock state. The indicator plate displays different positions or colors to show whether the lock is latched or unlatched, allowing users to confirm the operational state without adding complex mechanical confirmation mechanisms.
3Ease of operation
If quick-opening mechanism is added for disabled persons, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The rear handle serves multiple functions: it acts as the emergency escape handle for all users, and simultaneously functions as a quick-opening mechanism for disabled persons who may have difficulty with traditional key operations. The same structural element provides both universal emergency escape capability and specialized accessibility support.
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
Facilitates rapid door opening during emergencies and provides clear visual indicators for locked/unlocked states, enhancing user convenience and ensuring secure operation.
Implementation Method 1
the front handle core is connected to the front baffle via a torsion spring; the fixing plate is connected to the rear rotating frame via another torsion spring
Implementation Method 2
the button sleeve is connected to a rear rotating frame via a snap ring
Data Source
AI summary
A convenient escape lock, including a wafer lock core, a rear handle, and a lock tongue. The wafer lock core is nested into and connected with a lock core sleeve, which in turn is nested into and connected with a first washer; the wafer lock core and the lock core sleeve are nested and installed inside a front handle body, which is connected to a front handle core, which is equipped with a second washer; the front handle core penetrates a front cover and is fixed with a front rotating frame. The front cover has a status indicator plate to indicate lock or unlocked state of the escape lock. Emergency escape is achieved by pressing or lifting the rear handle. A disabled person can lock the door by simply pressing the knob assembly. The texts of the status indicators of the status indicator plate can effectively prevent accidental unlocking.