L-Shaped Column Cabinet Pull-Out for Front Shelf Access
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Solution Overview
Problem
Traditional vertical pull-out structures in column cabinets restrict access to shelves, allowing object collection and storage only from the sides due to the presence of the front upright, making frontal access difficult.
Innovation Solution
A novel L-shaped pull-out structure with a single upright connected to a cross-piece, allowing shelves to be accessed from both sides and the front, and featuring adjustable cross-pieces for stability and versatility, compatible with both hinged and translating doors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a traditional frame-shaped bearing structure with two uprights is used, then the structural stability is improved, but the access to shelves is restricted to side directions only
Solution Approach 1:
The patent removes the front upright from the traditional frame-shaped bearing structure, extracting the obstructing element that prevented frontal access to shelves. This leaves a single rear upright that maintains structural stability while eliminating the access barrier, allowing users to reach shelves from the front, sides, and above.
Solution Approach 2:
The bearing structure is segmented from a complete frame with two uprights into a simplified configuration with only one rear upright. This segmentation separates the structural support function (performed by the single upright) from the access obstruction (removed with the front upright), resolving the contradiction between stability and accessibility.
2Ease of operation
If a single upright L-shaped structure is used, then the access to shelves from front and sides is improved, but the structural stability may be compromised
Solution Approach 1:
The patent strengthens the single upright by adding vertical reinforcement elements that extend along the height of the upright. These reinforcement ribs add structural rigidity in the vertical dimension, compensating for the reduced lateral bracing from removing the front upright, thereby maintaining stability while enabling frontal access.
3Strength
If cross-pieces are added for stability, then the structural rigidity is improved, but the complexity of the bearing structure increases
Solution Approach 1:
Instead of adding complete cross-pieces that would create a complex frame structure, the patent applies local reinforcement ribs directly to the single upright at specific locations. These localized strengthening elements provide necessary rigidity only where needed, maintaining structural strength while avoiding the complexity of a full cross-piece framework.
Data Source
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AI summary
The present invention relates to a vertical structure used to support shelves or baskets (7), adapted to be mounted inside column cabinets along their depth, characterised in that it uses an "L" shaped frame (T) as bearing element capable of sliding from inside to outside of the cabinet and vice versa.