Double-Leaf Door Lock Adjustable Unlocking Element
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Solution Overview
Problem
Existing double-leaf door locking arrangements face challenges in easily and intuitively adjusting the unlocking mechanism to accommodate varying gap dimensions between the strike box and lock case, leading to potential jamming of the lock bolt and difficulties in executing a panic function, especially when the fixed leaf is opened first.
Innovation Solution
The locking arrangement features an adjustable unlocking element with a screw-based adjustment mechanism accessible from the lock forend, allowing precise adjustment of the gap width between the actuating device and the unlocking element, ensuring the lock bolt can be reliably unlocked across different gap dimensions without requiring additional adjustments in the strike box.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If shims are used to compensate for differing gap dimensions, then the locking arrangement can be adapted to different gap sizes, but the adjustment process becomes time-consuming and requires specialized experience
Solution Approach 1:
The patent implements a dynamically adjustable unlocking element that can be repositioned along the bolt's actuation path. The adjustment device allows the unlocking element to be moved to different positions, enabling the locking arrangement to adapt to varying gap dimensions between the strike plate and lock case without requiring time-consuming shim installation or specialized adjustment procedures.
2Adaptability or versatility
If the unlocking mechanism is made adjustable to accommodate varying gap dimensions, then the locking arrangement becomes more versatile, but the device complexity increases
Solution Approach 1:
The adjustment device is integrated within the existing lock case structure. The unlocking element is positioned within the bolt, and the adjustment mechanism is nested within the lock case, utilizing existing spaces and structural elements. This nesting approach allows the adjustable functionality to be incorporated without significantly increasing the overall device complexity or requiring additional external components.
3Reliability
If the actuating area of the release element is moved to compensate for gap variations, then the panic function can be executed reliably, but the adjustment mechanism becomes more complex
Solution Approach 1:
The unlocking element serves multiple functions: it acts as both the panic actuating element and the adjustment mechanism. By moving the actuating area of the unlocking element along the bolt's actuation path, the same component ensures reliable panic function execution across varying gap dimensions without requiring separate adjustment mechanisms, thereby maintaining simplicity while achieving universality.
Data Source
Figure 1~2
Figure 3~5
AI summary
The invention relates to a locking arrangement (1) for a double-leaf door (active leaf 3, inactive leaf 5) comprising a lock case (10) with a lock faceplate (12) and a lock bolt (14) and a blocking element (blocking element 16).1), which secures the lock bolt (14) in an excluded state against being transferred to an enclosed state, and a counter case (30) with a strike plate (32), wherein the lock bolt (14) in the excluded state engages at least partially in a recess (34) of the strike plate (32), wherein, to perform a panic function, an actuating device (40) in the counter case (30) actuates a release element (20) guided in the lock bolt (14), which releases the blocking of the lock bolt (14) in the lock case (10), and transfers the lock bolt (14) from the excluded state to the enclosed state, in which the lock bolt (14) releases the strike plate (32), and a double-leaf door with such a locking arrangement (1).According to the invention, the unlocking element (20) has an adjusting device (screw element 28) accessible from the lock faceplate (12), which sets a gap width (S) in the locked state between the actuating device (40) and an actuating area (26.2) of the unlocking element (20).