Drawer rear wall
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Solution Overview
Problem
Drawer rear walls require a significant amount of material for stability, leading to high material consumption, weight, and production costs, while existing fastening systems are not optimized for efficient material use.
Innovation Solution
The drawer rear wall design features fastening portions with a larger wall thickness than the middle portion, allowing for a thinner middle section and using bending or profiling processes to achieve the necessary thickness, with separate mounting devices for connection to sidewalls, ensuring compatibility with existing fastening systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a uniform wall thickness is used throughout the drawer rear wall to ensure stability, then the structural stability is maintained, but the material consumption and weight increase significantly
Solution Approach 1:
The drawer rear wall is designed with non-uniform wall thickness: the fastening portions have a first wall thickness optimized for connection stability, while the middle portion has a second, smaller wall thickness. This local differentiation allows the structure to maintain stability at critical connection points while reducing material consumption in less critical areas.
2Reliability
If a larger wall thickness is used in the fastening portions to ensure connection stability, then the connection reliability to sidewalls is improved, but the overall material consumption and production costs increase
Solution Approach 1:
The fastening portions are designed with a first wall thickness that is larger than the middle portion's second wall thickness. This localized thickness increase ensures reliable connection to the sidewalls while minimizing material consumption in the middle portion, thereby reducing production costs.
Solution Approach 2:
The drawer rear wall is segmented into functionally distinct portions: fastening portions for connection and a middle portion for spacing. Each segment has optimized wall thickness according to its specific functional requirements, allowing independent optimization of connection reliability and material efficiency.
3Quantity of substance
If the wall thickness is reduced in the middle portion to save material, then material consumption and weight are reduced, but the structural stability may be compromised
Solution Approach 1:
The middle portion is designed with a second wall thickness that is smaller than the first wall thickness of the fastening portions. This localized thinning reduces material consumption and weight in the middle section while the thicker fastening portions maintain the overall structural stability and connection integrity.
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
This design reduces material consumption and weight while maintaining structural stability and compatibility with existing fastening systems, thereby lowering production costs.
Implementation Method 1
the larger wall thickness of the fastening portions can be achieved by a corresponding bending process (foldover, flanging) or by a profiling method (forming process) of a flat material in an initial condition
Data Source
AI summary
A drawer rear wall for a drawer includes a first fastening portion for fixing the drawer rear wall to a first sidewall of the drawer, and a second fastening portion for fixing the drawer rear wall to a second sidewall of the drawer. The two fastening portions of the drawer rear wall are mutually spaced from one another in a longitudinal direction of the drawer rear wall by a middle portion, and a first wall thickness of at least one of the two fastening portions, preferably both fastening portions, is larger than a second wall thickness of the middle portion.