Lock Cylinder Core Pin Scanning Section
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Solution Overview
Problem
Existing lock cylinders lack sufficient security measures to prevent unauthorized access, as they can be compromised by unsuitable keys due to the lack of advanced scanning and locking mechanisms.
Innovation Solution
The development of core pins with a scanning section and a locking section, along with a matching key design featuring coding recesses on one broad side and a control pin system, enhances locking security by ensuring precise key alignment and rotation, utilizing eccentric pin configurations and conical surfaces to interact with the key's profile grooves and ribs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional core pins without scanning sections are used, then the lock cylinder structure is simpler, but the locking security is insufficient
Solution Approach 1:
The core pin is divided into distinct functional sections: a locking section with an end face that contacts the housing cavity, and a scanning section with an eccentric pin that protrudes through an opening in the core pin hole bottom. This segmentation allows each section to perform its specific function - the locking section provides structural support and positioning, while the scanning section actively scans the key profile to verify authenticity, thereby enhancing security without overly complicating the overall structure
Solution Approach 2:
The scanning section is positioned eccentrically relative to the core pin hole axis, creating a dimensional offset that enables the scanning end to traverse across the key's broadside coding recesses during insertion. This eccentric positioning in a different spatial dimension allows the scanning mechanism to effectively interact with the key code without requiring complex lateral movement mechanisms
2Adaptability or versatility
If coding recesses are provided on both broad sides of the key, then the key has higher versatility, but the manufacturing precision requirements increase
Solution Approach 1:
The lock cylinder is designed to accept keys with coding recesses on only one broad side, creating an asymmetric configuration. The scanning section of the core pin is positioned to scan only the coding recesses on one side of the key. This asymmetric design maintains versatility by allowing one-sided coding while reducing manufacturing precision requirements compared to requiring precise alignment of coding recesses on both sides of the key
3Reliability
If the core pin hole is designed as a blind hole with eccentric opening, then the core pin cannot rotate, but the manufacturing complexity increases
Solution Approach 1:
The core pin hole is pre-designed as a blind hole with an eccentric opening positioned at a specific offset from the hole axis. This preliminary structural configuration ensures that when the core pin is inserted, the eccentric pin of the scanning section naturally engages with the key coding and prevents rotation. The anti-rotation function is built into the basic structure rather than requiring additional anti-rotation mechanisms, simplifying manufacturing
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a locking cylinder with a housing (1) having a housing cavity (3) and a cylinder core (2) rotatably mounted in the housing cavity (3), the cylinder core having a keyway (4) for inserting a matching key (30), wherein core pin bores (5) open into the keyway (4), which in a locked position are aligned with housing pin bores (6) and in which core pins (7) are mounted that can be moved into a release position by coding recesses (35) cut into the front of the key (30), the core pins having a locking section (44) and a scanning section (42) projecting off-center therefrom. It is essential that the scanning section (42) has a rounded plan view and projects into the keyway (4) through an opening (40) arranged eccentrically in the base (39) of the core pin bore (5).