Drawer Lock Device with Occluded Keyway Slot
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Solution Overview
Problem
Lock picking techniques have become sophisticated, making it challenging to prevent unauthorized access to locked drawers using traditional anti-lock picking methods.
Innovation Solution
A drawer locking system featuring a locking cylinder with a keyway slot that is occluded when the drawer is in a secure position, requiring a specific key to align security pins for rotation, and optionally using a handle or wireless signal to extend the drawer and expose the keyway slot, ensuring the locking mechanism cannot be picked.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the keyway slot is exposed for easy key insertion, then ease of operation is improved, but lock picking vulnerability increases
Solution Approach 1:
The drawer must be extended to a second position to expose the keyway slot before the key can be inserted. This preliminary action of extending the drawer creates a temporal and spatial separation between the locking mechanism and the key insertion point, preventing lock pickers from accessing the keyway slot while the drawer is in its closed, locked position.
Solution Approach 2:
The keyway slot is positioned on the top surface of the drawer rather than on the front face. This dimensional relocation means the keyway slot becomes accessible only when the drawer is extended outward, creating a geometric relationship where the slot is occluded by the drawer body itself when retracted, thus preventing access from the front.
2Ease of operation
If the drawer is extended to expose the keyway slot, then ease of operation is improved, but the locking mechanism becomes more vulnerable to tampering
Solution Approach 1:
The locking system transitions from a static configuration to a dynamic one where the drawer has two distinct positions: a first closed position where the keyway slot is occluded and the lock is secure, and a second extended position where the keyway slot is exposed for key insertion. This dynamic positioning ensures that the vulnerable keyway slot is only accessible when the drawer is intentionally extended by the authorized user.
3Ease of manufacture
If traditional lock mechanisms are used, then ease of manufacture is improved, but resistance to lock picking deteriorates
Solution Approach 1:
The locking system is segmented into separate functional components: the drawer extension mechanism, the keyway slot exposure system, and the traditional locking cylinder with pins. This segmentation allows the use of a simple, easily manufactured traditional lock mechanism while adding the security feature of occlusion through the drawer extension design, thus maintaining ease of manufacture while improving security.
Data Source
AI summary
An anti-lock picking lock device is provided. The lock device features a locking cylinder having an opening configured to receive a drawer. The drawer having a keyway slot on its top surface and is configured to receive a similar shaped key. The drawer is enabled to slide within the clocking cylinder during use. In one position, the keyway slot is not exposed and occluded from any type of tampering. In another positon, the drawer is extended, either manually or via an electronic device, making the keyway slot accessible for operation.