Push-pull Door Lock Anti-panic Release Mechanism
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Solution Overview
Problem
Conventional push-pull door locks require users to rotate the key knob in the opposite direction to release the lock, making it difficult for individuals inside to quickly open the door in emergency situations, such as fires, leading to potential accidents due to panic and difficulty in finding the key knob.
Innovation Solution
A push-pull door lock with an anti-panic function that automatically releases the locked state when the indoor side handle is operated, featuring a key knob assembly, guide plates, and a stopper mechanism that allows the door to be opened without needing to manipulate the key knob indoors, ensuring swift evacuation in emergencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the door locking device is locked using the key knob assembly and key assembly, then the door can be securely locked, but the indoor handle operation is restricted and requires complex manual manipulation to release
Solution Approach 1:
The locking mechanism is divided into two independent control paths: one for locking (key knob assembly and key assembly) and one for emergency release (indoor handle operation). The stopper is separated from the guide plate, allowing the indoor handle to operate independently of the locking state. This segmentation enables reliable locking while maintaining easy emergency release operation.
Solution Approach 2:
Instead of requiring the user to manipulate the key knob to release the lock from the inside, the mechanism is inverted so that normal handle operation automatically triggers the release mechanism. The indoor handle operation, which would normally be restricted, is designed to automatically disengage the stopper and release the locking mechanism, making the release operation simpler and more intuitive.
2Reliability
If the stopper is coupled to the guide plate to prevent upward movement during locking, then the locking mechanism is secured, but the indoor handle cannot be operated to release the lock
Solution Approach 1:
The coupling between the stopper and guide plate is made dynamic rather than fixed. The stopper can be coupled to the guide plate during locking to prevent upward movement, but can be decoupled when the indoor handle is operated. This dynamic coupling allows the mechanism to adapt between two states: secure locking and flexible release operation.
Solution Approach 2:
The indoor handle operation serves as an intermediary mechanism that can override the stopper-guide plate coupling. When the indoor handle is operated, it acts as a mediator to disengage the stopper from the guide plate, allowing the guide plate to move upward and release the locking mechanism. This intermediary function provides versatility while maintaining locking security during normal operation.
3Reliability
If the key knob assembly and key assembly are used to lock the door, then the door can be locked from both sides, but the indoor side requires locating and manipulating the key knob in emergencies
Solution Approach 1:
The mechanism is designed so that the indoor handle operation automatically triggers the release sequence in advance of any manual key knob manipulation. When the indoor handle is operated, the system preliminarily disengages the stopper from the guide plate, initiating the release process before the user would need to locate and manipulate the key knob. This preliminary action reduces emergency release time significantly.
Solution Approach 2:
The locking mechanism is designed to be self-servicing in emergency situations. The indoor handle operation automatically initiates the release sequence without requiring the user to manually manipulate the key knob assembly. The system serves itself by using the handle operation to trigger the disengagement of the stopper and subsequent release of the locking mechanism, eliminating the need for user manipulation of the key components during emergencies.
Data Source
AI summary
The present inventive concept relates to a push-pull door lock having an anti-panic function, the push-pull door lock comprising: a door locking device which is provided inside a door and opens/closes the door; a handle device comprising bodies fixedly provided on the indoor side and the outdoor side of the door, and handles which are respectively provided on the bodies to be pushed or pulled; and a locking means which is provided in each of the bodies of the handle device and locks the operation of the handle to lock the door, wherein the locking means comprises: a key knob assembly which is rotatably provided in the indoor side body; a key assembly which is rotatably provided in the outdoor side body and is connected to the key knob assembly to be rotated along with the key knob assembly; and a stopper which is connected to the key assembly, is rotated along with the key assembly, and locks the operation of the handle. The locking means includes guide plates which are provided on the indoor side and outdoor side bodies and are moved up and down on the bodies by push and pull operations of the indoor side and outdoor side handles. The outdoor side guide plate has a through-hole through which the stopper passes to be rotatable and to which the stopper is coupled after being rotated so as to stop the moving-up/down operation of the guide plate during locking of the locking means. The key knob assembly passes through the indoor side guide plate to be rotatable, and is rotated when the guide plates are moved up and down.