Corridor Winged Door Lock Assembly Actuator Control
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Solution Overview
Problem
Existing lock arrangements for doors with a moving leaf and a stationary leaf often fail to reliably transfer the locking element into the unlocked position when the door is opened, leading to issues with relocking and preventing the door from being closed again.
Innovation Solution
A lock arrangement with a locking element and control latch system, where the locking element is held in the unlocked position by an actuator until the control latch reaches a protruding position, preventing unintended relocking and ensuring the door can be reliably opened and closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the locking element is allowed to move into the locking position during door opening, then the door can be securely locked when closed, but the door becomes blocked and cannot be closed again
Solution Approach 1:
The control latch is designed to be actuated in advance during the door opening process. When the door begins to open, the control latch is pushed out by the locking plate, which preemptively prevents the locking element from moving into the locking position. This preliminary action ensures that the locking element remains in the unlocked position throughout the opening process, allowing the door to be opened and closed without blocking issues.
Solution Approach 2:
The control latch serves as an intermediary mechanism between the locking element and the door opening/closing process. It mediates the interaction by being pushed out by the locking plate during door opening, which in turn prevents the locking element from engaging with the counter-lock opening. This intermediary action resolves the conflict between maintaining secure locking when closed and enabling free opening/closing movement.
2Reliability
If the control latch remains in the retracted position too long during opening, then the locking element can transition to locked position, but this prevents reliable unlocking when the door is fully open
Solution Approach 1:
The system employs feedback through the mechanical interaction between the control latch, locking plate, and locking element. As the door opens and the control latch is pushed out by the locking plate, this movement provides immediate feedback that prevents the locking element from transitioning to the locked position. The feedback mechanism ensures that the locking element only transitions to the locked position when the control latch is in the retracted position and the door is fully closed, eliminating timing-related unlocking failures.
3Ease of operation
If the locking element actuator releases the locking element before the control latch reaches the protruding position, then the actuator can return to retracted position, but the locking element may unintentionally move into the locking position
Solution Approach 1:
The control latch performs a preliminary anti-action by being pushed out during door opening, which counteracts any tendency of the locking element to move into the locking position. This preliminary protective action ensures that even if the locking element actuator releases the locking element early, the locking element remains prevented from engaging with the counter-lock opening until the door is properly closed and the control latch is retracted.
Data Source
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AI summary
The invention relates to a lock arrangement (500) comprising a lock (1) for a swing door and a counterlock (100) for a fixed door, wherein the lock (1) comprises at least one bolt element (20), wherein the bolt element (20) engages in an opening (110) of the counterlock (100) in a locking position, wherein the lock (1) comprises at least one control latch (50), wherein the control latch (50) assumes a retracted position for moving the bolt element (20) into the locking position, wherein in a protruding position of the control latch (50) the movement of the bolt element (20) into the locking position is prevented, wherein the counterlock (100) comprises a bolt element actuator (130), wherein the bolt element actuator (130) is movable from a retracted position to an operating position. wherein the counter lock (100) includes a strike plate (210) for holding the control latch (50) in the retracted position.According to the invention, the locking element actuator (130) is designed to hold the locking element (20) in an unlocked position in the operating position until the control latch (50) has reached the protruding position.