Safety lock mechanism and automatic machine

The safety lock mechanism addresses the issue of operator error by incorporating a stopper member and alarm system to ensure the lock is reset, enhancing safety and compliance in automated machines.

WO2026110218A1 Publication Date: 2026-05-28FUJI CORP
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Patent Information

Application Number
PCT/JP2024/040917
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-11-19
Publication Date
2026-05-28

AI Technical Summary

Technical Problem

Mechanical lock-type electromagnetic lock switches in automated machines are prone to operator error due to poor operability and increased likelihood of forgetting to reset the lock, compromising safety when the machine is powered on with the lock released.

Method used

A safety lock mechanism with a mechanical lock type electromagnetic lock switch that locks the door when closed, featuring a lock release operation means and a stopper member to prevent complete closure, ensuring the lock is reset before powering on, and an alarm system to alert operators if the lock is not returned.

Benefits of technology

Ensures safe operation by preventing the door from fully closing if the lock is not reset, providing visual and auditory alerts to remind operators to return the lock to its original position, thus enhancing safety and compliance with international standards.

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Abstract

This safety lock mechanism comprises: a mechanical-lock-type electromagnetic lock switch configured to perform an operation for returning to an original position upon sensing that a lock remains released, the electromagnetic lock switch inserting an operation key fixed to an opening / closing door into a key insertion opening in a switch body fixed to a support-member side, thereby locking the closed opening / closing door by restricting the operation key from falling out; a lock release operation means for operating a lock release means that releases the lock of the operation key within the switch body when not energized; and a stopper member that prevents the full closing of the opening / closing door in conjunction with the lock release operation performed by the lock release operation means.
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