Pickproof Lock Radial Axial Pin Mechanism
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Solution Overview
Problem
Conventional locks can be easily picked using a round tube, allowing unauthorized access and theft of personal goods or private matters, as the alignment of pin sets can be speculated based on the lengths of slots formed on the tube.
Innovation Solution
A pickproof lock design featuring a housing with through holes, a lock shaft with side holes and stop flanges, and both axial and radial pin sets, including resilient elements, which increases complexity and prevents lock picking by requiring precise alignment of multiple pins and shearing planes for unlocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional lock with axial pin sets is used, then the locking mechanism is simple and easy to manufacture, but it can be easily picked using a round tube to form slots and speculate pin alignment
Solution Approach 1:
The patent introduces radial pin sets that extend in the radial direction perpendicular to the axial pin sets, adding a new dimensional layer to the locking mechanism. This radial dimension prevents pick tools from forming continuous slots through the housing, as the radial pins create additional barriers that disrupt the picking process and prevent speculation of pin alignment.
Solution Approach 2:
The locking mechanism is segmented into multiple independent pin sets with different orientations (axial and radial) and different configurations (single pin, twin pins, triple pins). This segmentation creates multiple independent locking barriers that must all be simultaneously overcome, making the lock resistant to picking attempts that work on conventional single-dimensional pin systems.
2Reliability
If multiple pin sets with different configurations are introduced, then the lock becomes pickproof, but the manufacturing complexity increases
Solution Approach 1:
The patent employs universal mounting structures and standardized resilient element configurations that can accommodate different pin types (single, twin, triple pins) within the same housing framework. The through holes and blind holes are designed with universal dimensions that accept various pin configurations, allowing a single manufacturing process to produce multiple pin arrangements without requiring completely different tooling or assembly procedures.
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 enhanced lock mechanism renders it impossible to unlock using a lock picking tool, ensuring personal goods or private matters are securely protected by increasing the complexity of the locking mechanism.
Implementation Method 1
a resilient element (43) mounted in the blind hole and abutting the second pin (42), each of the at least one radial pin set includes a resilient element (54)
Data Source
AI summary
A pickproof lock has a hollow housing, a lock shaft and a sleeve mounted in the housing, multiple axial pin sets mounted in the lock shaft and the sleeve, and at least one radial pin set mounted in the housing and the lock shaft. When unlocking the pickproof lock, the key is able to push the axial pin sets and the at least one radial pin set to unlocking positions, so as to drive the lock shaft to rotate and to unlock the pickproof lock. The complexity of the pickproof lock is increased. People with bad intentions are unable to unlock the pickproof lock with a lock picking tool, such as a round tube. Accordingly, personal goods or private matters can be safely protected by the pickproof lock.