Passive Leaf Lock Rod Arrangement for Double-Door Access
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Solution Overview
Problem
Existing lock devices for two-leaf doors, particularly those used in panic doors, face issues with complete unlocking of both wings, leading to obstructions and increased effort during relocking, and incorrect settings can occur due to interconnected unlocking mechanisms.
Innovation Solution
A lock device design that separates the switching paths for the door opener and locking rod actuation, allowing the active leaf to be used for access while keeping the passive wing locked, with independent operation of the electric door opener and locking rod actuation, enabling practical access without automatic release of the electric door opener upon unlocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the locking device completely unlocks all locking elements to allow both leaves to be opened, then the door can be accessed in case of panic, but both leaves are automatically unlocked resulting in obstructions and increased relocking effort
Solution Approach 1:
The locking device is segmented into independent control paths: the first actuating device controls only the first locking element (bolt) while the second actuating device controls only the second locking element (latch). This segmentation allows selective unlocking of individual locking elements, enabling the active leaf to be opened while the passive leaf remains locked, thus avoiding obstructions and reducing relocking time.
2Ease of operation
If the locking bars are retracted and the bolt is relocated by the bolt lifting device, then the door can be unlocked, but incorrect settings and obstructions can occur during relocking
Solution Approach 1:
The locking device uses independent actuating devices for each locking element, allowing precise control over which locking element is engaged or disengaged. This prevents incorrect settings during relocking by ensuring that only the intended locking element is actuated, eliminating the risk of obstructions caused by mismatched locking states.
3Device complexity
If a single actuating device controls all locking mechanisms, then the structure is simplified, but both leaves are automatically unlocked leading to obstructions
Solution Approach 1:
The locking device is divided into independent control units with separate actuating devices for each locking element. This segmentation enables selective operation of locking elements, allowing the active leaf to be opened while keeping the passive leaf locked, thus improving door access control without significantly increasing overall device complexity.
Data Source
Figure 1
AI summary
A locking device for a double-leaf door with an active leaf (1) and a passive leaf (2) is described. The locking device comprises an active leaf locking device (10) and a passive leaf locking device (20). The active leaf locking device (10) has a locking mechanism with a bolt element. The passive leaf locking device (20) has a locking mechanism with a bolt rod assembly comprising an upper bolt rod assembly (24o) and a lower bolt rod assembly (24u) and a bolt rod actuation device (24b).It is essential that the passive wing lock device (20) has an electric door opener (21t), and that the electric door opener (21t) and the bolt rod actuation device (24b) are switched or switchable in such a way that the electric door opener (21t) is not necessarily actuated when the bolt rod actuation device (24b) is actuated to lock the bolt rod. The electric door opener remains in its release position or is switched into this position.