Keyed Lock Defender Block Mechanism for Anti-Burglary Security
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Solution Overview
Problem
Conventional locks with European cylinders are vulnerable to advanced burglary techniques, such as lock-picking and 'bumping', and lack reliable, maintenance-free security solutions that minimize electrically-powered components.
Innovation Solution
A keyed device for locks with a euro profile cylinder system, featuring a cam-operated deadbolt mechanism, an actuator plug, manipulator head, and a defender block with a removable flat key, which rotates between positions to engage with mechanical combination pins, ensuring secure operation and protection against external access and force attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional European cylinder locks are used, then the lock structure is simple and easy to operate, but the lock is vulnerable to advanced burglary techniques such as lock-picking and bumping
Solution Approach 1:
The lock mechanism is divided into separate functional components: an outer shell with defender block for protection, a rotor for key insertion, a manipulator head with actuator plug for cam operation, and combination pins for security. This segmentation allows each component to specialize in its function while collectively providing high security resistance against picking and bumping attacks.
Solution Approach 2:
The patent employs nested结构设计 where the actuator plug is inserted into the manipulator head, the rotor houses the defender block, and the entire assembly is integrated within the outer shell. This nesting protects internal components while maintaining a compact structure that doesn't significantly increase external dimensions.
2Reliability
If the key area is made inaccessible from outside to prevent reverse detection, then security is improved, but the key cannot be inserted or operated
Solution Approach 1:
The defender block is designed to rotate between different positions: in the first position, it blocks external access to the manipulator head to prevent combination detection; in the second position, it rotates to allow the key to be inserted and operated. This dynamic repositioning resolves the contradiction between protection and accessibility.
Solution Approach 2:
The rotor acts as an intermediary component between the external environment and the internal manipulator head. The key is inserted into the rotor, which then transmits the operational force to the manipulator head when the defender block is in the appropriate position. This intermediary allows controlled access while maintaining security.
3Reliability
If passive protection parts are made robust to resist drilling and cutting, then security is improved, but the device becomes heavier and more complex
Solution Approach 1:
Rather than making the entire lock device heavy and robust, the patent applies strong protective materials and structures only where needed: the outer shell and defender block use materials treated to resist cutting and drilling, while other components maintain appropriate strength without excessive weight. This localized reinforcement provides high anti-attack resistance while controlling overall weight.
Data Source
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AI summary
The keyed device is (100) is associated with a consolidated profile cylinder (E) in which a cam (C) operates a lock (S), with the entire device being suitable for installation on security doors, armoured doors and the like. The cam (C) is controlled by a manipulator head (11) outfitted with mechanical combination means (12) whose function is to block rotation of the cam. The manipulator head (11) is not directly accessible from the outside, being covered by a rotating defender block (25) that is moved from a vertical to a horizontal axis by means of a rotor (22). A removable flat key (26) with combination holes (260) is coupled from the outside with the defender block (25) and then brought inside by the rotation of the block itself (25): axial translation of the rotor (22) with an opening/closing device (27) leads the flat key (26) to release the mechanical combination means (12) and engage itself with the manipulator head (11); rotation of the rotor (22) results in rotation of the entire unit, setting in motion the cam (C) that opens and closes the lock (S). The opening/closing device (27) has a housing (29) in which the flat key (26 ) is kept when not in use.