Refrigerator Double-Door Latch for One-Handed Opening
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Solution Overview
Problem
Conventional refrigerators with double doors require users to grip separate handles for the first and second doors, leading to inconvenience in opening and closing them.
Innovation Solution
A latch device is integrated into the refrigerator system, allowing the second door to be fixed or released from the first door using a single handle, enabling the second door to be opened or closed independently or simultaneously with the first door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate handles are provided on the first door and second door, then each door can be opened independently, but the operation becomes inconvenient and requires gripping multiple handles
Solution Approach 1:
The patent combines the handles of the first door and second door into a single integrated handle structure. This single handle is coupled to both doors, allowing the user to open either door or both doors simultaneously by gripping one handle, thereby simplifying the operation and reducing the number of separate components
Solution Approach 2:
The single handle is designed to perform multiple functions: it can open the first door alone, open the second door alone, or open both doors together. This multi-functional design eliminates the need for separate handles while maintaining full operational capability for each door
2Adaptability or versatility
If the second door is always coupled to the first door, then a single handle can open both doors, but the second door cannot be opened independently when only the second door needs to be accessed
Solution Approach 1:
The coupling between the first door and second door is made dynamic rather than fixed. The latch device can be in a locked state (coupling both doors) or an unlocked state (allowing independent operation). This dynamic coupling mechanism adapts to different usage scenarios, providing both simultaneous opening capability and independent opening capability as needed
3Device complexity
If the latch device components are exposed, then the mechanism is simple, but heat insulating material can penetrate into the space between components causing thermal loss
Solution Approach 1:
The patent introduces a cover as an intermediary component that closes the space between the latch device components and the door. This cover prevents heat insulating material from penetrating into the gap while maintaining the simplicity of the underlying latch mechanism. The cover acts as a protective barrier without complicating the core latch functionality
Data Source
AI summary
Provided is a refrigerator having only a second door opened/closed or having both of a first door and a second door opened/closed using one handing by allowing a latch device to fix the second door to the first door or release the second door from being fixed to the first door. The refrigerator includes a main body having a storage compartment, a first door that is rotatably disposed in front of the main body and has an opening formed therein, a second door that is rotatably disposed in front of the first door to open/close the opening, a handle coupled to a front side of the second door to open/close the first door and the second door, and a latch device allowing the second door to be fixed and released to/from the first door.