Dual Unlocking Mode Padlock with Segmented Clutch Mechanism
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Solution Overview
Problem
Current TSA luggage locks require either cutting or key operation by TSA agents for inspection, lacking a secure and efficient mechanism for transitioning between locked and opened states without compromising security.
Innovation Solution
A padlock design featuring a shackle with a long and short leg, a spindle with an extended member, and a clutch stack, allowing for operation in locked, opened, and reset modes via combination code or key operation, ensuring secure transition and easy inspection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional TSA lock mechanism is used, then the lock can be opened by TSA agents with an overriding key, but the lock requires cutting or key operation which compromises security and convenience
Solution Approach 1:
The locking mechanism is segmented into multiple independent components: a first locking mechanism with a first key and a second locking mechanism with a second key. This segmentation allows TSA agents to use a specific second key to open only the second locking mechanism, enabling inspection without compromising the first locking mechanism's security.
Solution Approach 2:
The patent extracts the TSA inspection function into a separate, independent second locking mechanism that can be opened by a specific second key. This extracted mechanism operates independently from the primary first locking mechanism, allowing TSA agents to access the lock without affecting the overall security system.
2Reliability
If a dual locking system is implemented, then the lock provides enhanced security with multiple keys, but the device complexity increases
Solution Approach 1:
The patent merges two locking mechanisms into a single integrated shackle structure. Both the first and second locking mechanisms are combined within the same shackle, allowing them to work together as a unified security system while maintaining individual key operations. This merging reduces overall system complexity compared to having completely separate locking devices.
Solution Approach 2:
The shackle serves multiple functions: it acts as both the locking element for the first locking mechanism and the accessible element for the second locking mechanism. This multi-functionality allows a single component to fulfill multiple security roles, reducing the number of separate parts needed in the system.
Data Source
AI summary
A padlock has a shackle having a long leg and a short leg, and a spindle with an extended member, the extended member engaged with the long leg of the shackle for movement together. The padlock also has a cylinder to receive a key for key operation, a stack of clutches and a plurality of dials engageable with the clutches to form a combination code, each clutch having an opening to receive the spindle. When the padlock is unlocked by the combination code, the spindle is engaged with the clutch stack for movement together along with the shackle. When the padlock is unlocked by the key operation, the spindle is disengaged with the clutch stack, allowing the spindle and the shackle to move upward relative to the clutch stack.