Single-Column Cupboard Drawer Closure Under Shelf Load
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Solution Overview
Problem
Conventional cupboard pull-outs with two vertical support columns impede maximum cabinet depth utilization and create gaps when closing due to the rear column's interference with the furniture front, and existing single-column solutions are expensive and prone to tilting under load.
Innovation Solution
A cupboard pull-out design featuring a single vertically aligned support column with a flexible or elastic element that adjusts its position to compensate for inclination under load, allowing complete closure without gaps, and a height-adjustable shelf system using a connection connector for secure attachment without additional fastening elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a single vertical support column is used to maximize cabinet depth utilization, then cabinet depth utilization is improved, but the support column tilts under weight loads causing gap formation
Solution Approach 1:
The patent changes the physical state of the support column from rigid to flexibly adjustable by introducing an elastic element that allows the lower pull-out frame profile to shift position, compensating for the tilt caused by shelf loads and maintaining proper alignment during closing movement
Solution Approach 2:
The elastic element acts as an intermediary between the support column and the lower pull-out frame profile, absorbing the stress from shelf loads and enabling position adjustment to compensate for tilting while maintaining structural integrity
2Stability of the object's composition
If a rigid support column structure is used to maintain vertical alignment, then structural stability is improved, but the furniture front cannot close completely under load due to column tilt
Solution Approach 1:
The patent transforms the static rigid support column into a dynamic system where the lower pull-out frame profile can adjust its position relative to the support column through the elastic element, enabling the structure to adapt during closing movement and eliminate gaps
3Strength
If two vertical support columns are used to maintain structural stability, then structural integrity is improved, but cabinet depth utilization is reduced due to rear column interference
Solution Approach 1:
The patent extracts the rear vertical support column from the structure, retaining only a single front support column and compensating for the lost structural support through the elastic element that enables position adjustment of the lower pull-out frame profile
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures the furniture front can close completely with loaded shelves, optimizing cabinet depth and visual appeal by eliminating the need for rear support columns and allowing easy shelf adjustment without tools, while maintaining structural integrity.
Implementation Method 1
a flexible or elastic element (21) which is arranged to exert a reaction force on a lower region of the support column (4)
Data Source
Figure 1
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AI summary
The cupboard drawer has a drawer frame with a vertically aligned individual supporting column (4). The drawer frame is movably arranged in an inner space of a cupboard body (1). The individual supporting column is connected with a lower drawer frame profile. A furniture front (3) is supported at the individual supporting column. The lower drawer frame profile is formed automatically adjustable to vertical position with respect to its position in the lower cupboard body guide (6) depending on the inclination of the supporting column.