Hook Lock with Dual Locking Function and Key Override
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional padlocks lack a secure dual locking mechanism that allows easy override by TSA agents for luggage inspection, compromising security and convenience.
Innovation Solution
A hook lock design featuring a dual locking function with a combination mechanism and a key overriding mechanism, where a latch moves between two positions to pivotally decouple the locking finger from the hook, allowing secure locking and easy override by a key for authorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a combination mechanism is used for locking, then security is improved, but ease of operation for authorized access deteriorates
Solution Approach 1:
The lock is designed with dual locking functions: a combination mechanism for normal secure locking and a key overriding mechanism for authorized access. This multi-functionality allows the same lock to serve both security purposes (combination lock) and authorized access purposes (key override), resolving the contradiction between security and ease of operation for authorized personnel.
2Ease of operation
If a key overriding mechanism is added, then ease of operation for authorized access is improved, but device complexity deteriorates
Solution Approach 1:
The key overriding mechanism is nested within the existing combination lock structure. The cylinder and key mechanism are integrated into the body housing that already contains the combination dials and clutches. This nesting approach allows the key override function to be added without requiring a completely separate mechanism, thereby reducing the increase in device complexity compared to adding a standalone override system.
3Adaptability or versatility
If dual locking function is implemented, then versatility is improved, but manufacturing precision deteriorates
Solution Approach 1:
The combination mechanism and key overriding mechanism are merged into a single integrated locking system. Both mechanisms operate on the same latch and locking finger, sharing common components such as the body housing, latch, and locking finger. This merging reduces the number of separate manufacturing precision requirements compared to having two independent locking systems, as the critical precision requirements are concentrated in the shared components rather than distributed across multiple separate mechanisms.
Data Source
AI summary
A lock has a hook and a locking finger to form a locking loop. The hook is fixedly attached to the lock body, whereas the locking finger can be pivoted to disengage from the hook to open the lock. The pivotal movement of the locking finger is controlled by a latch and an extended edge. The latch has a tip and the locking finger has a cut-out to receive the tip when the lock is locked. When the lock is locked, a spindle prevents the extended edge from moving toward the latch for releasing the tip from the cut-out. When the lock is opened by the combination mechanism, the spindle is moved away to allow the extended edge to move toward the latch to release the tip from the cut-out. When the lock is opened by the key mechanism, turning the cylinder causes the extended edge to move the latch downward.