Drawer assembly
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Solution Overview
Problem
Drawer assemblies in refrigeration appliances often experience slanting and sticking issues due to uneven horizontal movement of sliding mechanisms, leading to operational inefficiencies.
Innovation Solution
A drawer assembly design featuring a unitary storage bin with reinforced edges and projecting teeth, coupled with linear motion elements and support brackets, which engage with mounting blocks to prevent deflection and ensure stable horizontal movement, thereby preventing slanting and sticking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If laterally located sliding mechanisms are used to allow horizontal movement of the drawer, then the drawer can be opened and closed, but the drawer may become slanted and stuck when the sliding mechanisms move at different rates
Solution Approach 1:
The invention transitions from purely lateral sliding movement to a combination of lateral and vertical movement. The drawer assembly is guided along angled tracks that convert horizontal pulling force into both lateral displacement and vertical lifting, preventing the drawer from sliding unevenly or becoming stuck while maintaining ease of operation.
2Ease of manufacture
If the storage bin is made with thin walls for ease of manufacture, then production cost is reduced, but the rear wall may deflect during drawer movement
Solution Approach 1:
The invention uses composite construction for the storage bin, combining thin-walled plastic material with integrated reinforcement ribs and corner strengtheners. This allows the bin to be easily manufactured while maintaining sufficient structural rigidity to prevent rear wall deflection during drawer movement.
Solution Approach 2:
The storage bin features localized reinforcement at critical areas such as the rear wall corners and edges, while the rest of the bin walls remain thin for ease of manufacture. This selective strengthening provides the necessary rigidity where needed without compromising manufacturing simplicity.
3Device complexity
If the drawer assembly is designed with simple sliding mechanisms, then device complexity is reduced, but the drawer may experience uneven movement and slanting
Solution Approach 1:
The invention introduces angled guide tracks as an intermediary element between the drawer and the cabinet walls. These tracks mediate the movement by providing a predetermined angled path that ensures uniform, slant-free motion while keeping the overall mechanism relatively simple and easy to manufacture.
Data Source
AI summary
A drawer assembly is provided for a refrigeration appliance. The drawer assembly comprises a unitary storage bin configured to move relative to the cooled compartment. The storage bin is defined by a front wall, a rear wall and opposed sidewalls that are arranged substantially parallel to the first and second interior walls of the cooled compartment. An uppermost portion of each of the opposed sidewalls comprises a projecting edge. The rear wall comprises a reinforced edge that inhibits deflection. A pair of linear motion elements is installed to enable movement of the storage bin in and out of the cooled compartment. A pair of support brackets couples the pair of linear motion elements.