Two-Stage Locking Mechanism with Electronic Verification
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Solution Overview
Problem
Current locking mechanisms for safety applications, such as releasing a worker from a safety harness, often have only one-stage locking verification and can be easily bypassed, posing safety risks in critical situations.
Innovation Solution
A two-stage locking mechanism combining mechanical and electro-mechanical verification, featuring a receiver base, pivotable locking tabs, and electronic components like magnetic actuators and reed switches, along with a push button mechanism for three-point unlocking, ensuring secure disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a one-stage locking verification mechanism is used, then the device complexity is reduced, but the reliability of the locking system deteriorates
Solution Approach 1:
The locking verification process is segmented into two distinct stages: a first mechanical verification stage using locking tabs and a second electronic verification stage using magnetic actuators and reed switches. This segmentation allows each stage to perform a specific verification function, improving overall reliability while keeping individual stages relatively simple.
Solution Approach 2:
The patent introduces an intermediary electronic verification stage between the mechanical locking and final release. The magnetic actuators and reed switches act as intermediaries that provide an additional layer of verification without directly interfering with the mechanical locking function, thereby enhancing reliability.
2Reliability
If a two-stage locking verification mechanism is implemented, then the reliability of the locking system is improved, but the device complexity increases
Solution Approach 1:
The patent merges mechanical and electronic verification systems into a unified two-stage locking mechanism. The mechanical locking tabs and electronic magnetic actuators/reed switches are combined to work together, where the mechanical stage provides immediate verification and the electronic stage provides additional verification, achieving high reliability through integration.
3Ease of operation
If mechanical locking tabs are used, then the ease of operation is improved, but the reliability deteriorates due to potential bypassing
Solution Approach 1:
The patent implements feedback mechanisms where magnetic actuators detect the position of locking tabs and reed switches verify the locked state. This feedback system provides electronic confirmation of the mechanical locking state, preventing bypassing while maintaining ease of operation through automatic verification.
4Reliability
If electronic components are added for verification, then the reliability is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent replaces complex mechanical verification mechanisms with electronic components. Instead of using purely mechanical interlocks and indicators, the system uses magnetic actuators and reed switches that can be more easily manufactured and assembled, reducing overall manufacturing complexity while improving reliability.
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
Enhances safety by providing a secure two-stage locking verification process that signals status changes electronically, reducing the risk of accidental disengagement and ensuring secure connection and disconnection in critical safety applications.
Implementation Method 1
The invention further includes electronic components including three magnetic actuators and corresponding electronic switches that signal change of state. The two second arms of the locking tabs and a leading edge of the insert respectively include the three magnetic actuators. The electronic switches, which may be magnetically activated reed switches, signal status change to an external controller
Data Source
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AI summary
Apparatus and method of locking two devices to each other through a receiver base, a pair of pivoting locking tabs, each having first and second arms extending out from a pivot point, and an insert that is partially engaged within a cavity formed by the receiver base and locking tabs. The receiver base is configured to be engageable with a first device. The insert is configured to be engageable with a second device. An optional push button assembly that has a retractable lip is engageable with the receiver base to block rotational movement of the locking tabs unless the lip of the push button is retracted. The apparatus may also include magnetic actuators and corresponding electronic switches that provide two stage locking and, optionally, contact state signaling to an external controller and computer to verify locked/unlocked status of the insert relative to the receiver base cavity and locking tabs.