Electric Latch Control Device for Mechanical Door Lock Retrofit
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Solution Overview
Problem
Conventional mechanical door locks cannot be easily converted to electrically controlled systems, requiring replacement when electrical control of door opening and closing is desired.
Innovation Solution
An electric latch control device with a mounting member, locking member, positioning member, and driving device that allows for electric control of a mechanical door lock, enabling it to be operated using electronic devices without replacing the existing lock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If an electric door lock is applied to achieve electric control of door opening and closing, then the door can be controlled through electronic devices, but the entire mechanical door lock must be replaced
Solution Approach 1:
The invention divides the door locking system into two independent parts: the existing mechanical door lock and the newly added electric latch control device. The mechanical lock handles the locking mechanism while the electric device provides control functionality, allowing incremental upgrade without complete replacement
Solution Approach 2:
The electric latch control device acts as an intermediary component between the electronic control system and the mechanical door lock. It translates electric control signals into mechanical actions that operate the existing lock, bridging the gap between electronic control and mechanical execution
2Ease of manufacture
If a mechanical door lock is used to maintain existing infrastructure, then the lock structure is simple and familiar, but it cannot be controlled through electric measures or technology
Solution Approach 1:
The invention merges the advantages of both mechanical and electric systems by combining the simple, proven mechanical door lock structure with an electric latch control device. The mechanical part maintains structural simplicity while the electric addition provides automated control capability
Solution Approach 2:
The electric latch control device is designed to work with conventional mechanical door locks, providing a universal solution that can be applied to existing infrastructure. It enables the mechanical lock to perform both its original mechanical functions and new electric control functions
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
Enables the use of conventional mechanical door locks to be electrically controlled, allowing for secure and convenient operation using electronic means without the need for lock replacement.
Implementation Method 1
The locking member is pivotable between a locking position closing the opening and an unlocking position revealing the opening
Implementation Method 2
The positioning member is in the engagement position when the locking member is in the locking position
Implementation Method 3
The restraining member is movable between a stopping position engaged with the first end of the positioning member and a non-stopping position not engaged with the first end of the positioning member
Data Source
AI summary
An electric latch control device includes a mounting member having an engaging end and a locking member pivotably mounted to the mounting member. A positioning member is pivotably connected to the mounting member and is engageable with the engaging end. A restraining member is engageable with and actuatable by a driving device securely mounted to the mounting member. When the restraining member is in a stopping position preventing pivotal movement of the locking member, the locking member is restrained by the restraining member, and a latch of a door lock is restrained in an opening of the electric latch control device. When the restraining member is in a non-stopping position not preventing pivotal movement of the locking member, the locking member is pivotable from a locking position to an unlocking position to thereby permit disengagement of the latch of the door lock from the opening.


