Refrigerator Sub Door Locking Assembly for Independent Access Control
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Solution Overview
Problem
Conventional refrigerators lack an efficient mechanism for users to easily open and close secondary storage compartments within the main door, compromising user convenience and energy efficiency.
Innovation Solution
A door opening assembly is integrated into the refrigerator, featuring a manipulation member accessible from the outside, a locking member, and a connection member that allows the sub door to be independently opened or closed, with elastic members for easy operation and secure closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sub door is added to the main door to create a secondary storage compartment, then user convenience is improved by allowing access to frequently used items without opening the main door, but device complexity increases due to the additional door and locking mechanisms
Solution Approach 1:
The door system is segmented into a main door and a sub door, allowing independent access to different storage compartments. The sub door can be opened separately from the main door, enabling users to access frequently used items in the secondary storage compartment without exposing the entire refrigerator interior, thus improving ease of operation while maintaining energy efficiency.
Solution Approach 2:
The sub door is nested within the main door structure, with the secondary storage compartment integrated into the main door body. This nesting approach allows the sub door to function independently while being part of the overall door assembly, adding functionality without significantly increasing external dimensions or overall device complexity.
2Reliability
If a door opening assembly with locking mechanisms is implemented, then reliability of door closure is improved, but ease of operation deteriorates due to the need for manipulation members and locking units
Solution Approach 1:
The door opening assembly incorporates elastic members that automatically engage the locking member with the locking unit when the sub door is closed, and automatically release when the manipulation member is actuated. This self-service mechanism ensures reliable closure without requiring manual alignment or complex adjustment, while still allowing easy operation through the manipulation member.
Solution Approach 2:
The connection member acts as an intermediary between the manipulation member and the locking member. When the manipulation member is pushed or pulled, the connection member transmits this motion to the locking member, which then engages or disengages with the locking unit. This intermediary mechanism simplifies the operation for the user while ensuring reliable locking through the intermediate components.
3Ease of operation
If the sub door is made accessible from the side surface with a manipulation member, then ease of operation is improved by providing external access, but device complexity increases due to additional components outside the door
Solution Approach 1:
The manipulation member serves multiple functions: it can be pushed to release the locking mechanism, pulled to engage the locking mechanism, and provides a grip for opening the sub door. This multi-functionality is achieved through the connection member that translates linear motion in either direction into rotational motion of the locking member, reducing the need for separate components for different operations.
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 user convenience by allowing easy access to secondary storage compartments while maintaining energy efficiency through independent operation of the sub door, improving the overall usability and design of the refrigerator.
Implementation Method 1
An elastic member may be disposed on each of the opening rod and the push rod to allow each of the opening rod and the push rod to return to its original position after being moved from the original position
Data Source
AI summary
A refrigerator includes a cabinet that defines a first storage compartment configured to store food, a main door rotatably mounted on the cabinet and configured to open or close at least a portion of the first storage compartment, an accommodation device accessible through an opening in the main door, a sub door mounted on the main door and configured to open or close the opening, and a door opening assembly that is configured to selectively restrict one side of a back surface of the sub door to a corresponding side of a front surface of the main door to thereby selectively restrict movement of the sub door relative to the main door. The accommodation device defines a second storage compartment within the main door that is separated from the first storage compartment, and the door opening assembly is configured to be manipulated from a side surface of the sub door.