Locking Device Radial Projections Anti-Picking
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Solution Overview
Problem
Traditional rotary pin tumbler locks are vulnerable to picking tools, which can be used to open them, necessitating a locking mechanism that enhances security.
Innovation Solution
A locking mechanism comprising an outer housing member and an inner core with radially extending projections and axial channels, where the inner core is rotatably moveable within the outer housing, featuring a unique configuration of annular and axial channels, and a key with adjustable pushing regions to align projections with an annular groove for rotation, along with anti-drill elements for enhanced security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional rotary pin tumbler locks are used, then the structure is simple and easy to manufacture, but the security is compromised due to vulnerability to picking tools
Solution Approach 1:
The locking mechanism is divided into multiple independent locking elements (at least three), each with its own projection and channel configuration. This segmentation allows each element to function independently while collectively providing enhanced security, as picking tools would need to manipulate multiple separate elements simultaneously rather than a single tumbler mechanism.
Solution Approach 2:
The locking elements have asymmetric configurations where projections extend radially outward and engage with annular channels at specific positions. The false notch positioned between axial channels creates an asymmetric geometry that prevents standard picking tools from functioning, as the tool would need to navigate the specific asymmetric path defined by the false notch and radial projections.
2Reliability
If multiple locking elements with radial projections are used, then security against picking is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The outer housing member integrates multiple functions into a single component: it contains the key-receiving region, provides axial channels for locking element movement, creates the annular channel for projection engagement, and incorporates the false notch for anti-picking protection. This multi-functionality reduces the need for separate components, simplifying the overall manufacturing process despite the enhanced security features.
Solution Approach 2:
The locking elements are nested within the outer housing member, with projections extending radially into the housing wall. The axial channels and annular channels are nested within the housing structure, creating a compact integrated design. This nesting approach allows multiple functional elements to be manufactured as a single piece or pre-assembled unit, reducing manufacturing complexity.
3Ease of operation
If the inner core is made rotatably moveable within the outer housing, then the lock can be actuated by key rotation, but the mechanism becomes more complex and potentially less reliable
Solution Approach 1:
The inner core and locking elements are merged into a single rotatable assembly. When the key rotates the inner core, all locking elements rotate simultaneously with it, maintaining their radial projection orientation. This merging eliminates the need for separate rotation mechanisms for each locking element, simplifying the overall mechanism while enabling easy key actuation.
Solution Approach 2:
The locking elements are pre-configured with projections that extend radially outward and are designed to engage with the annular channel at specific positions. The key-receiving region is pre-configured with the false notch positioned between axial channels. This preliminary configuration ensures that when the key is inserted and rotated, the projections automatically align with the annular channel at the correct moment, enabling smooth rotation without requiring complex alignment mechanisms.
Data Source
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AI summary
The present invention relates to a locking device and to an actuating device for activating said locking device.