Cabinet Pull-Out Frame Design for Torsional Rigidity Under Heavy Loads
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Solution Overview
Problem
Cabinet pull-outs with existing designs tend to deform when loaded with heavy objects, leading to misalignment of storage compartments and potential jamming issues due to lack of torsional rigidity.
Innovation Solution
The design incorporates a pull-out frame with carrier elements and linear guides, along with a groove in the base for increased rigidity and dimensional stability, allowing for the use of fewer components and eliminating the need for additional support elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If storage compartments are used for heavy objects, then storage capacity is improved, but the storage compartments deform and become dimensionally unstable
Solution Approach 1:
The base is divided into a first base and a second base that are detachably connectable to each other. This segmentation allows the storage compartment to be divided into smaller load-bearing units, distributing the heavy load across multiple connection points and preventing deformation of any single base element while maintaining overall dimensional stability.
2Strength
If the cabinet pull-out is made more rigid to prevent deformation, then torsional rigidity is improved, but the device complexity increases
Solution Approach 1:
The first and second bases are designed with pre-integrated connection elements and attachment mechanisms that provide the necessary rigidity and stability before the storage compartment is loaded. The detachable connection system is pre-configured with reinforcement features that automatically engage to distribute loads, eliminating the need for additional support elements or complex bracing structures.
3Strength
If additional support elements are added to prevent deformation, then torsional rigidity is improved, but the quantity of components increases
Solution Approach 1:
The connection elements for detachably joining the first and second bases are merged with the bases themselves, forming integrated structural units. The attachment mechanisms are combined with the load-bearing surfaces, eliminating the need for separate support elements, brackets, or reinforcement pieces. This merging reduces the total component count while maintaining the necessary torsional rigidity through the integrated design.
Data Source
AI summary
A cabinet pull-out comprises a first storage compartment and a second storage compartment and a pull-out frame, the pull-out frame connecting the first storage compartment to the second storage compartment. The first and the second storage compartment each are provided with a base. The pull-out frame comprises a single carrier element which extends essentially rectangularly to the base area of the corresponding storage compartment. Each of the first and second storage compartments are provided with a front wall and a rear wall and two side walls each extending between the front wall and the rear wall. The single carrier element is attached to an external side of the rear wall or one of the side walls. A loose storage compartment can be detachably coupled to one of the first or second storage compartments.