Firearm Barrel Locking Body With Decoupled Key Removal
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Solution Overview
Problem
Existing anti-shooting safety devices for firearm barrels suffer from inadequate anchoring force maintenance during key removal, leading to a decrease in the stability and efficiency of the safety device's positioning on the barrel.
Innovation Solution
The safety device incorporates uncouplable connecting means that maintain the anchoring force by allowing a fraction of a revolution angle rotation in the releasing direction, preventing the decrease of the anchoring force during key removal, and utilizes a screw-nut mechanism to convert rotational motion into linear motion for expanding the anchoring means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the key is rotated in the releasing rotation direction to enable removal, then the key can be removed from the lock driving means, but the anchoring force decreases
Solution Approach 1:
The connecting means is divided into engagement portion and uncouplable portion, separating the key removal function from the anchoring force transmission function. This segmentation allows the key to be removed without affecting the anchoring force, as the uncouplable portion prevents force transmission during removal rotation
Solution Approach 2:
The uncouplable connecting means creates a mechanical decoupling that maintains the anchoring force at its maximum level even during key removal. The design ensures that the anchoring force remains constant (equipotential) throughout the key removal process, preventing any decrease in anchoring efficacy
2Force
If the key is rotated in the anchoring rotation direction, then the anchoring force increases, but the key cannot be removed without counter-rotation
Solution Approach 1:
The uncouplable connecting means acts as an intermediary mechanism between the lock driving means and the anchoring means. It transmits the anchoring force during locking rotation but blocks force transmission during removal rotation, enabling key removal without compromising anchoring efficacy
Solution Approach 2:
The connecting means exhibits dynamic behavior, being engaged during anchoring rotation to transmit force, and becoming uncoupled during removal rotation to allow key extraction. This dynamic engagement and disengagement resolves the contradiction between maintaining anchoring force and enabling key removal
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An anti-shooting safety device (1) for a barrel (2) of a firearm comprises a locking body (3) to prevent a projectile being inserted, anchoring means (4) that is expandable transversely to exert an anchoring force on the barrel to prevent a displacement of the safety device with respect to the barrel, lock driving means (5) with a rotor unit (9) that is drivable by a key (6) and associated with the anchoring means to anchor, and release, the safety device on and from the barrel, displacing means (10) configured to act on the anchoring means (4) and expand the anchoring means, and uncouplable connecting means (17) for rotatably uncoupling the displacing means (10) from the lock driving means (5) in response to a rotation of a fraction of a revolution angle of the rotor unit (9) in a releasing rotation direction (R2), so as to ensure maintenance of an anchoring force of the anchoring means (4) with respect to the barrel (2) during the step of removing the key (6) from the rotor unit (9).