Multi-Latch Security Strap Lock Mechanism
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Solution Overview
Problem
Security strap devices used for tagging objects to individuals are susceptible to tampering and unlocking, compromising their security and integrity.
Innovation Solution
A security strap device with a locking mechanism featuring multiple latches that are simultaneously biased to a locked position, requiring simultaneous displacement to an unlocking position, combined with a specifically designed unlocking tool to securely lock and unlock the strap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple lock mechanism is used, then the device complexity is reduced, but the reliability against tampering and unauthorized unlocking deteriorates
Solution Approach 1:
The lock mechanism is divided into multiple independent latches (at least two latches) that can be simultaneously engaged with the strap. Each latch operates independently but contributes to the overall security, creating a segmented locking system that requires multiple points to be compromised for unauthorized access
Solution Approach 2:
Multiple latches are combined within a single lock body structure, working together to secure the strap. The latches are integrated with a common actuating mechanism that allows simultaneous engagement and disengagement, merging multiple security functions into one unified device
2Reliability
If multiple latches are used to improve security, then the reliability against tampering is improved, but the device complexity increases
Solution Approach 1:
The latches are designed with self-latching capability where each latch automatically engages with its corresponding protrusion on the strap when the lock is closed. The latches utilize spring biasing to automatically return to the engaged position, reducing the need for complex control mechanisms for each individual latch
Solution Approach 2:
The multiple latches serve the same fundamental function of securing the strap, but they work in unison to provide enhanced security. The latches are actuated by a single common mechanism, allowing one action to control multiple locking points simultaneously, making the system multi-functional in achieving both security and ease of operation
3Reliability
If a secure lock is designed that is difficult to unlock, then the reliability is improved, but the ease of operation for authorized unlocking deteriorates
Solution Approach 1:
A key tool is introduced as an intermediary device to interact with the lock mechanism. The key tool engages with specific features on the latches or lock body to simultaneously actuate all latches, providing a mediated method for authorized unlocking that maintains security while enabling convenient operation by authorized personnel
Data Source
AI summary
A system and a method for a security strap device including a strap; a lock, the lock comprising a locking mechanism; a fixed portion of the strap being secured inside the lock; a free end of the strap insertable into the lock to form a loop in the strap, the lock is configured to lock a portion of the strap to form the loop in the strap, wherein; the locking mechanism comprises a plurality of latches moveable between a locking position and an unlocking position; the plurality of latches engaging one or more locking slots within the lock when in the locking position to the lock the strap within the lock; and wherein the latches are all simultaneously biased toward the locked position and the latches are required to be simultaneously displaced to an unlocking position to unlock the strap.