Wing Lock Anti-Return Device Blocks Manipulation
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Solution Overview
Problem
Existing locking arrangements for wings, such as espagnolettes, can be easily unlocked by manipulation, which compromises security and tightness.
Innovation Solution
Incorporating an anti-reverse device with a blocking element that jams in the locked state, utilizing an angled base body between two partial connecting rods to prevent movement of the connecting rod, and an actuating mechanism with toothed segments to manage forces and movements, ensuring the locking arrangement remains secure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional locking bolt with drive rod is used, then the locking arrangement can be actuated, but it can be easily unlocked by manipulation
Solution Approach 1:
The patent introduces an anti-return device as an intermediary component between the drive rod and the locking bolt. This device includes a blocking element that acts as a mediator to prevent unauthorized manipulation. When the locking bolt is in the locked state, the blocking element engages with the drive rod to block any return movement, thereby securing the locked state against manipulation while maintaining a relatively simple overall structure.
Solution Approach 2:
The locking arrangement is segmented into distinct functional components: the locking bolt, the drive rod, and the anti-return device with blocking element. This segmentation allows each component to perform its specific function independently. The anti-return device can be added as a separate module to enhance security without completely redesigning the entire locking mechanism, thus managing complexity through modular design.
2Reliability
If an anti-return device with blocking element is added to prevent manipulation, then security is improved, but device complexity increases
Solution Approach 1:
The anti-return device is merged with the existing locking mechanism in such a way that the blocking element integrates with the drive rod assembly. The blocking element is positioned to engage directly with the drive rod, combining the anti-return function with the existing actuation mechanism. This merging approach adds the security function while minimizing the increase in overall device complexity.
Solution Approach 2:
The blocking element is designed to automatically engage and disengage based on the position of the drive rod. When the drive rod is manipulated to attempt unauthorized unlocking, the blocking element self-activates to block the movement. This self-service mechanism reduces the need for additional control components, thereby limiting the increase in device complexity while maintaining enhanced security.
3Reliability
If the blocking element jams to prevent drive rod movement, then unlocking by manipulation is hindered, but the mechanism may become stuck
Solution Approach 1:
The blocking element is designed with dynamic engagement characteristics. It selectively jams the drive rod only when manipulation attempts unauthorized unlocking while allowing smooth movement during legitimate actuation. The blocking element's position and geometry are optimized to differentiate between authorized actuation forces and unauthorized manipulation forces, enabling it to dynamically engage or disengage as appropriate.
Solution Approach 2:
The blocking element has different engagement characteristics at different positions along the drive rod's path of motion. It provides a jamming effect only in the specific region where unauthorized manipulation would occur, while maintaining smooth operation during normal locking and unlocking cycles. This localized quality ensures that the blockage function is activated only where and when needed, preserving ease of operation for legitimate use.
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 effectively prevents or makes it difficult to unlock the locking arrangement by manipulation, maintaining the locked state through a compact and robust design with a small number of parts, ensuring secure operation.
Implementation Method 1
a compressive force introduced into the base body by the partial drive rods, generated by manipulation, causes a rotational movement of the base body about an axis of rotation, which tilts the locking element against a housing of an actuating mechanism
Implementation Method 2
a locking element which, in the locked state, jams when the at least one drive rod is manipulated and blocks any movement of the at least one drive rod
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a locking arrangement (10) for a wing (3), with a drive bolt (11) which has at least one drive rod (12, 14) and is movable between a locked state in which the at least one drive rod (12, 14) engages with a first end (12.1, 14.1) in a corresponding recess (9A, 9B), and an unlocked state in which the first end (12.1, 14.1) of the at least one drive rod (12, 14) is arranged outside the corresponding recess (9A, 9B), and to a device (1) with at least one movable wing (3) and such a locking arrangement (10). According to the invention, a push-back safety device (20) has a locking element which, in the locked state, jams when the at least one drive rod (12, 14) is manipulated and blocks movement of the at least one drive rod (12, 14) which extends the first end (12.1, 14).1) which would move at least one connecting rod (12, 14) out of the corresponding recess (9A, 9B).