Inner Door Lock Operating Device with Electric Actuation and State Indication
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Solution Overview
Problem
Panic exit door locks are inconvenient to use due to the complexity of the inner operating device and high manufacturing costs, as users cannot confirm the lock's state when trying to open the door from the inside, and the existing mechanical structure is cumbersome.
Innovation Solution
An inner operating device with a latch device and a locking member that uses an electric driving mechanism, pressure sensors, and a lighting system to indicate the lock's state, allowing easy operation and reducing mechanical complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mechanical inner operating device is used in panic exit door lock, then the door can be opened from inside, but the structure becomes complicated and manufacturing costs increase
Solution Approach 1:
The patent replaces the traditional mechanical inner operating device with an electric driving device that includes a motor, detecting members, and control circuits. This substitution eliminates complex mechanical linkages while achieving the same function of opening the door from inside, thereby reducing structural complexity and manufacturing costs
2Ease of manufacture
If the inner operating device is simplified, then manufacturing costs reduce, but users cannot confirm the lock state when operating from inside
Solution Approach 1:
The patent incorporates detecting members that detect the lock state and provide feedback to a control device, which then controls a lighting device to visually indicate the lock state. This feedback mechanism ensures users can confirm whether the door is locked or unlocked without requiring complex mechanical indication structures
Solution Approach 2:
The patent uses a lighting device that changes color or illumination state to indicate different lock states. For example, the lighting device may emit different colored lights or vary in brightness to show whether the door is locked or unlocked, providing clear visual information to users with a simple and cost-effective solution
3Ease of operation
If the latch can be moved freely from latching position, then door opens easily, but security against unauthorized opening is reduced
Solution Approach 1:
The patent implements a dynamic locking mechanism where the locking member can be in different states (locked or unlocked) that dynamically change the mobility of the latch. When locked, the latch cannot move from the latching position; when unlocked, the latch can move freely to open the door. This dynamic behavior provides both security and ease of operation as needed
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
The solution allows users to easily open the door from either lock state and provides a clear indication of the lock's state through lighting, simplifying the mechanism and reducing manufacturing costs.
Implementation Method 1
An electric driving device is received in the first space of the body and is mounted to the first engaging portion. The electric driving device is configured to be operably connected to the latch of the latch device.
Implementation Method 2
A first detecting member is mounted in the second space of the body and is electrically connected to the electric driving device. The locking member presses against the first detecting member when the locking member is in one of the releasing state and the locking state.
Implementation Method 3
A lighting device is received in the groove of the operating member. The lighting device is electrically connected to the first detecting member. When the locking member is in the locking state, the lighting device is in one of a first state and a second state. When the locking member is in the releasing state, the lighting device is in the other of the first state and the second state.
Data Source
AI summary
An inner operating device for a door lock is mounted to an inner side of a door and includes a first detecting member electrically connected to an electric driving device. A second detecting member is mounted in a latch device of the door lock. When the first detecting member detects an external force applied to the inner operating device, the electric driving device is activated, and the latch is moved to the unlatching position. When the latch device is set to be in a locked state or an unlocked state, the second detecting device outputs a signal to a lighting device to emit light for indicating the locked or unlocked state. In another example, the lighting device emits light of a first color when the latch device is in the locked state and emits light of a second color when the latch device is in the unlocked state.