Lock Key System with Rectangular Pins and Fake Grooves
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Solution Overview
Problem
Conventional mechanical lock key systems are vulnerable to being picked by advanced tools and techniques, leading to compromised security due to their ease of unlocking.
Innovation Solution
A key system with enhanced security features, including three or more rectangular holes for rectangular pins, a side bar controlled by these pins, and a quadrangular pin with an escape groove, which aligns with the side bar to maintain a locked state and confuse picking tools with fake grooves, making it difficult for picking tools to release the lock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional locking pins and drive pins are used in the key system, then the structure is simple and easy to manufacture, but the lock can be easily picked by picking tools
Solution Approach 1:
The key system divides the locking mechanism into multiple independent components: locking pins, drive pins, rectangular pins with fake grooves, and a side bar with escape grooves. Each component performs a specific function, and the combination creates multiple layers of security that resist picking while maintaining individual component simplicity
Solution Approach 2:
The side bar acts as an intermediary component between the rectangular pins and the outer case. It transmits the locking force from the pins to the case while providing escape grooves that prevent picking tools from directly manipulating the pins, thus enhancing security without requiring completely new mechanisms
2Reliability
If rectangular pins with side bar insertion holes are used to control the side bar, then the locking reliability is improved, but the system becomes vulnerable to advanced picking techniques
Solution Approach 1:
The fake grooves on the rectangular pins are designed to resemble the functional side bar insertion holes, but they lead nowhere. When a picker encounters these fake grooves, they are deceived into applying force to non-functional features, wasting time and effort while the actual locking mechanism remains secure
Solution Approach 2:
The side bar insertion holes are positioned at specific heights on the rectangular pins, creating a vertical dimension of control. The side bar can only be actuated when the pins are in the correct position, adding a spatial layer of security that prevents picking tools from easily manipulating the locking mechanism
3Reliability
If multiple rectangular pins are scattered by self-load to prevent side bar movement, then the locking state is maintained, but picking tools can still manipulate the pins to release the lock
Solution Approach 1:
The spring-loaded rectangular pins are pre-configured to exert force on the side bar, creating preliminary resistance to any attempted movement. This pre-applied force makes it difficult for picking tools to manipulate the pins, as the pins are already in a state of controlled tension that resists external manipulation attempts
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 key system effectively maintains a locked state and significantly increases the difficulty for picking tools to unlock, providing enhanced security against advanced picking techniques.
Implementation Method 1
locking pins and drive pins which are respectively inserted into pin holes formed in the outer case and the inner case to be operated by springs
Implementation Method 2
The rectangular pins are scattered by self-load so that the side bar insertion holes respectively formed in the rectangular pins get out of the side bar
Data Source
AI summary
A key system of a lock having a high peaking difficulty when picking is tried by a picking tool, includes three or more rectangular holes formed between pin holes of an inner case to insert rectangular pins, where each of the rectangular pin includes a side bar insertion groove and a fake groove formed to be spaced apart from the side bar insertion groove at an interval to raise the degree of picking difficulty. A quadrangular pin is inserted into the rectangular hole located in the middle among the rectangular holes formed in the inner case to be inserted into the hole formed in an outer case. The side on which the quadrangular pin is located has an escape groove to accommodate the quadrangular pin.