Attack-Resistant Ring Lock With Welded Anti-Prying Flanges
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Solution Overview
Problem
Existing ring locks are susceptible to peeling attacks, which compromise their security and effectiveness in preventing theft of wheeled transportation devices.
Innovation Solution
The ring lock features a case with welded flanges of one centimeter or less in radial depth and strategically positioned ramps to discourage gripping, combined with a lock mechanism that includes a lock core and a latch to retain the shackle in closed or open positions, enhancing resistance to prying attempts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the flange depth is increased to provide better gripping surface, then the ease of operation is improved, but the resistance to peeling attacks deteriorates
Solution Approach 1:
The flange surface is modified with localized features (ramps, knurling, or textured patterns) that provide gripping capability only where needed, while maintaining overall flange depth at secure levels. This localized modification allows operators to grip the flange effectively without creating leverage points that would facilitate peeling attacks.
Solution Approach 2:
The flange surface is pre-modified with ramps or textured patterns that guide the operator's fingers into secure gripping positions, preventing accidental engagement with vulnerable areas. This preliminary surface preparation ensures that normal gripping operations are facilitated while inherently resisting peeling attempts.
2Reliability
If the flange depth is decreased to reduce leverage for prying, then the resistance to peeling attacks is improved, but the ease of operation deteriorates
Solution Approach 1:
Instead of uniformly increasing flange depth throughout, the invention applies localized surface modifications (ramps, knurling, or textured patterns) to specific gripping zones. This allows the flange to maintain adequate depth for secure gripping while the localized surface features provide the necessary friction and control without creating excessive leverage points.
Solution Approach 2:
The invention changes the surface parameters (texture, friction coefficient, geometric features) of the flange rather than solely adjusting the depth parameter. By modifying the surface properties through ramps or knurling, the flange provides improved gripping characteristics while maintaining a controlled depth that resists peeling attacks.
3Strength
If welding is used to join flanges for strength, then the strength is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The flange assembly is segmented into separate components that can be pre-fabricated and then joined using simpler connection methods. This segmentation allows for standardized manufacturing of individual flange portions that can be assembled through processes like bolted connections or friction-fit mechanisms, reducing the complexity compared to monolithic welding operations.
Solution Approach 2:
An intermediary joining mechanism (such as a threaded insert, friction-fit feature, or mechanical connector) is introduced between the flange components. This intermediary element facilitates the joining process by providing a standardized interface that can be assembled without requiring complex welding procedures, while still achieving the necessary joint strength.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design significantly impedes prying attempts by discouraging gripping of the case flanges, thereby increasing the lock's resistance to attacks and ensuring the security of wheeled transportation devices.
Implementation Method 1
the first flange and the second flange are welded to one another
Data Source
AI summary
An exemplary ring lock generally includes a case, a shackle, and a lock mechanism. The shackle is movably mounted to the case. The lock mechanism is operable to selectively retain the shackle in a closed position. The case includes a first case portion including a first flange, and a second case portion including a second flange. In certain forms, the first flange and the second flange are welded to one another. In certain forms, the first flange and/or the second flange has a depth of one centimeter or less. In certain forms, the case includes at least one ramp configured to discourage gripping of the case.