Locking Cylinder Scanning Element for Key Authentication
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Solution Overview
Problem
Existing locking systems fail to effectively differentiate between keys with and without sufficiently undercut profile ribs, leading to unauthorized access and potential locking malfunctions.
Innovation Solution
A scanning element and mechanism are integrated into the locking core, featuring a base body with tactile projections and a receiving space that accommodates a scanning element, allowing for the detection of undercut profile ribs on keys, which prevents rotation of the locking core beyond a certain angle if an unauthorized key is used.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional locking cylinder without scanning function is used, then the device complexity is low and ease of manufacture is good, but the reliability is poor because it cannot differentiate between authorized and unauthorized keys
Solution Approach 1:
The locking cylinder is divided into functional modules: the scanning element with sensing projections, the receiving space within the locking core, the housing pins, and the spring mechanism. Each module performs a specific function in the key verification process, allowing the complex authentication function to be implemented through coordinated simple components
Solution Approach 2:
The scanning element acts as an intermediary between the key and the locking mechanism. It detects the presence of undercut profile ribs on the key and translates this physical feature into a mechanical signal that controls whether the housing pins can block rotation, thereby mediating the authentication process
2Measurement precision
If a scanning element with receiving space is integrated into the locking core, then the measurement precision of profile rib undercut detection is improved, but the device complexity increases
Solution Approach 1:
The scanning element is integrated directly into the locking core, merging the detection function with the rotation control function. The receiving space is formed within the locking core structure itself, combining multiple functions into a single component to minimize overall system complexity
Solution Approach 2:
The sensing projections are positioned at specific locations within the receiving space to detect the local geometric feature (undercut) of the profile rib. The scanning element only needs to detect the presence or absence of the undercut at this specific location, rather than analyzing the entire key structure, achieving precise detection with minimal complexity
3Measurement precision
If the sensing element is designed with tactile projections, then the measurement precision of key profile detection is improved, but the ease of manufacture decreases
Solution Approach 1:
The sensing projections are designed to automatically engage with the key's profile features during insertion and rotation. The geometry of the projections and the receiving space is configured so that the key itself performs the measurement by its own shape, eliminating the need for external measurement devices or complex sensing mechanisms
Data Source
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AI summary
The subject matter of the present invention relates to a scanning element (180) for a locking core (130) of a locking cylinder (100) for scanning the presence of an undercut profile rib (15a) of a key (10) inserted into a locking channel (150) of the locking core (130), comprising a base body (182) having an inner surface (189) which, when used in a locking core (130), faces the locking channel (150), and an outer surface (185) which, when used in a locking core (130), is designed to contact a housing pin (23) and/or a cylinder wall (112) of a cylinder bore (120) of a surrounding cylinder housing (110), wherein at least one sensing projection (182) extends from the inner surface (189) which is provided for contacting a key section of a key (10) inserted into the locking channel (150).wherein the outer surface (185) of the base body (182) is at least partially rounded and/or has at least two differently inclined slopes (187). The invention further relates to a locking core (130), a scanning mechanism, a locking cylinder (100), a key (10), a locking system, and a method therefor.