Ring Lock Case Structure for Peeling Attack Resistance
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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 portable objects.
Innovation Solution
The ring lock design incorporates a case with flanges welded together and a depth of one centimeter or less, featuring ramps to discourage gripping, and a lock mechanism with a shackle that interferes with wheel spokes to prevent rotation, enhancing resistance to prying and tampering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flange depth is reduced to one centimeter or less, then the lock becomes more resistant to peeling attacks, but the structural strength and stability of the case may be compromised
Solution Approach 1:
The case is divided into multiple portions (first case portion, second case portion) that are joined together through welding of flanges. This segmentation allows the flanges to be kept shallow (one centimeter or less) while maintaining overall structural integrity through the welded connection, thereby resisting peeling attacks without compromising strength
Solution Approach 2:
Multiple case portions are merged through welding of their flanges to form a unified structure. The welding process creates a strong bond between the shallow flanges, compensating for their reduced depth and maintaining the overall structural strength while preventing peeling attacks
2Ease of operation
If ramps are added to discourage gripping, then the ease of operation for legitimate users is maintained, but the device complexity increases
Solution Approach 1:
Ramps are added only to specific locations on the case where gripping would occur, rather than modifying the entire case structure. This localized addition provides anti-gripping functionality while minimizing the increase in overall device complexity
Solution Approach 2:
The ramps are designed with curved surfaces that redirect the force applied by gripping tools. The curved geometry of the ramps allows legitimate users to easily overcome the ramps with minimal force while preventing effective gripping by attackers, thus maintaining ease of operation with minimal complexity increase
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 attempts to pry open the lock, making it more secure against theft by discouraging gripping and providing enhanced resistance to mechanical attacks.
Implementation Method 1
the first flange and the second flange are welded to one another
Data Source
Figure 1~2
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AI summary
An exemplary ring lock (100) generally includes a case (150), a shackle (120), and a lock mechanism (140). The shackle (120) is movably mounted to the case (150). The lock mechanism (140) is operable to selectively retain the shackle (120) in a closed position. The case includes a first case portion (152) including a first flange (153), and a second case portion (154) including a second flange (155) welded to the first flange (153). In certain forms, the first flange (153) and/or the second flange (155) has a radial depth dimension (d155) of one centimeter or less. In certain forms, the case (150) includes at least one ramp (158) configured to discourage gripping of the case (150).