Adjustable Pull-Out Drawer Guides for Variable Load Capacity
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Solution Overview
Problem
Existing pull-out chests of drawers are structurally complex and costly due to the need for differentiated reinforcement in drawers to handle varying loads, leading to increased production time and economic costs.
Innovation Solution
A chest of drawers design featuring identical structural drawers with adjustable guides and a rolling cylinder system, where the maximum load capacity is determined by the positioning of a hooking element on the rail, allowing for drawers to be modified to sustain different weights without altering their structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If drawers are reinforced with strengthening structures to sustain heavy objects, then load-bearing capacity is improved, but structural complexity increases
Solution Approach 1:
The guide system is made adjustable along the uprights, allowing the guides to be positioned at different heights and locations. This dynamic configuration enables the same simple drawer structure to adapt to different load requirements by changing the guide positioning, rather than requiring structurally complex reinforced drawers for heavy loads.
Solution Approach 2:
The load-bearing capacity is adjusted by changing the parameters of the guide system positioning rather than changing the drawer structure itself. By modifying the guide location and orientation parameters, the system can handle varying weights with identical simple drawer constructions.
2Strength
If differentiated drawer structures are used to handle varying loads, then load-bearing capacity is improved, but manufacturing cost and production time increase
Solution Approach 1:
A single universal drawer design is created that can handle all load requirements. The differentiation is achieved through the adjustable guide system rather than through different drawer structures, making the drawers universally applicable across all weight classes and eliminating the need for multiple drawer types.
Solution Approach 2:
The adjustable guide system provides dynamic adaptability to different load conditions, allowing identical drawer structures to serve multiple functions across different weight categories. This eliminates the need for producing differentiated drawer types, thereby improving manufacturing efficiency.
3Adaptability or versatility
If guides are made adjustable to accommodate different loads, then adaptability is improved, but device complexity increases
Solution Approach 1:
The guide system is segmented into adjustable components that can be independently positioned along the uprights. This segmentation allows for flexible configuration to match different load requirements while keeping each individual component relatively simple in design.
Data Source
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AI summary
A differentiated pull-out chest of drawers (1), comprising: a containment frame (2) for at least one drawer (6), which is movable between a closed position in which it is contained within the volumetric dimensions of said frame (2) and an open position in which it projects out from said frame (2) to a preset length; moving means (8) of the drawer (6), interposed between a pair of side uprights (3) of the frame (2) and said drawer (6) to make the drawer (6) slidable between the closed position and the open position; and an adjusting member (12) of the open position of the drawer (6) to determine the preset length of projection of the drawer (6) from the frame (2).