Refrigerator Drawer Withdrawal Mechanism for Door Interference
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Solution Overview
Problem
In large refrigerators, the rear-mounted components on the door interfere with shelves or drawers in the storage compartment, making it difficult to access food and increasing the complexity and weight of the receiving frame to support loads, which can lead to deformation and shaking of the withdrawal mechanism.
Innovation Solution
A withdrawal mechanism that moves forward to withdraw the drawer, supported by drawer guides, with the mechanism itself not bearing the load, allowing for a simpler and lighter design that prevents deformation and shaking, and automatically returns the drawer to its original position when the door is closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the receiving frame is designed to support the loads of the shelf, drawer, and food, then the load-bearing capability is improved, but the structure becomes complicated and the volume increases
Solution Approach 1:
The patent divides the load support function into two separate components: the receiving frame structure and the drawer guides. The receiving frame provides structural support without directly bearing the drawer load, while the drawer guides independently support the drawer and shelf loads. This segmentation allows the receiving frame to have a simpler structure while maintaining overall load-bearing capability through the combined system.
2Strength
If the receiving frame is designed to support the loads, then the load-bearing capability is improved, but the volume of the receiving frame increases
Solution Approach 1:
The patent segments the load support function between the receiving frame and the drawer guides. The drawer guides, rather than the receiving frame, are designed to support the weights of the drawer and shelf. This allows the receiving frame to have reduced volume while the drawer guides provide the necessary load-bearing capacity through their guide structure.
3Ease of operation
If the drawer is positioned closer to the front of the refrigerator, then the ease of access to food is improved, but the drawer may interfere with rear-mounted components on the door
Solution Approach 1:
The patent employs a dynamic withdrawal mechanism that automatically moves the drawer forward when the door is opened and returns it to its original position when the door is closed. This dynamic adjustment allows the drawer to be positioned closer to the front for easier access during door-open conditions, while automatically retracting to avoid interference with rear-mounted door components when the door is closed.
4Ease of manufacture
If the withdrawal mechanism is made lighter and simpler, then the ease of manufacture is improved, but the mechanism may easily shake due to low inertia
Solution Approach 1:
The patent introduces the drawer guides as an intermediary component between the drawer and the withdrawal mechanism. The drawer guides support the drawer and absorb reaction forces during withdrawal, preventing these forces from being transmitted to the lighter and simpler withdrawal mechanism. This intermediary structure allows the withdrawal mechanism to be manufactured more easily while maintaining stability during operation.
Data Source
AI summary
A refrigerator includes a cabinet, a door rotatably connected to the cabinet, a drawer disposed within a storage compartment of the cabinet to accommodate objects therein, a drawer guide that supports the drawer and guides the drawer and guides the drawer to move forward and rearward, an extraction mechanism that includes a base part that is disposed below the drawer and moves while the door is opened and closed, a rear frame that extends from the base part toward the rear side of the drawer and pushes the drawer forward when the base part moves forward, and an arm that extends forward from the rear frame and is disposed between the drawer and a side of the storage compartment, and an arm guide disposed between the storage compartment and the drawer to guide the arm to move forward and rearward.