Refrigerated Door Locking Mechanism with Internal Safety Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Refrigerated appliances with airtight seals pose a suffocation risk due to their design, necessitating a safety mechanism that allows the door to be opened from inside while maintaining security features to prevent tampering and theft.
Innovation Solution
A locking mechanism with a deadbolt and latch plate system that can be overridden from inside, using a pin to maintain the latch plate in a disengaged position until manually reset, allowing safe exit without constant pressure and ensuring security until the lock is reset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism with deadbolt and latch plate is provided to prevent tampering or theft, then security is improved, but the device complexity increases and the risk of accidental locking or suffocation increases
Solution Approach 1:
A pin is introduced as an intermediary element between the latch plate and the deadbolt. The pin can be positioned to prevent the latch plate from moving to the engaged position, thereby blocking the deadbolt from extending into the aperture. This intermediary mechanism allows the system to maintain security when needed while providing a simple way to override the lock in emergency situations without requiring complex electronic systems or continuous manual pressure.
2Object-affected harmful factors
If a safety mechanism with internal latch or release is provided to allow door opening from inside, then suffocation risk is reduced, but the locking mechanism reliability may be compromised
Solution Approach 1:
The safety release function is extracted from the main locking mechanism by using a separate pin that can be independently activated from inside the appliance. The pin operates independently of the deadbolt and latch plate normal locking operation, allowing the door to be opened in emergencies without compromising the security of the main locking system during normal operation.
3Reliability
If the latch plate is always in the engaged position for security, then security is maintained, but the door cannot be opened from inside in case of emergency
Solution Approach 1:
The pin is pre-positioned in a location where it can block the latch plate's movement to the engaged position. In normal operation, the pin remains in a retracted or non-interfering position, allowing the latch plate to engage securely. In emergency situations, the pin can be quickly activated (by pulling a cord, pressing a button, or moving a lever) to prevent latch plate engagement, thereby blocking the deadbolt from locking and allowing immediate door opening without complex procedures.
Data Source
AI summary
A releasable locking mechanism for a refrigerated unit. A latch plate is movable between a position that can be engaged by a deadbolt and a position clear of the deadbolt. The latch plate is moved by a door release accessible from an interior of the refrigerated unit. When the door release is activated, a pin blocks movement of the latch plate so that the refrigerated unit remains unlocked until the pin is reset.