Dishwasher, in particular domestic dishwasher
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Solution Overview
Problem
Existing domestic dishwashers lack a reliable and permanent height stop mechanism that ensures the proper installation height and functionality of components like the door lock, which can be compromised by external forces.
Innovation Solution
Incorporating a tab-style height stop on the upper frame run of the front frame that projects beyond the cross-sectional profile, providing a U-shaped profile with parallel arms and a bead for stability, ensuring the appliance height is limited and the door lock function is maintained without additional assembly parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate mounting brackets are used as height stops, then the height stop function is provided, but the mounting brackets can be easily removed by the installer, compromising the permanent function of door lock and child lock
Solution Approach 1:
The height stop function is merged with the front frame by forming the height stop as an integral tab protruding from the upper frame run. This eliminates separate mounting brackets and ensures the height stop cannot be easily removed, thereby permanently ensuring the function of door lock and child lock without additional separate components.
2Reliability
If multiple separate height stop components are used, then the height stop function is provided, but the installation process becomes more complex and time-consuming
Solution Approach 1:
The height stop is formed as an integral part of the front frame during manufacturing, eliminating the need for separate assembly steps. This reduces installation time while ensuring the height stop function is permanently provided, as the tab cannot be easily removed from the front frame structure.
3Reliability
If additional separate parts are used for height stop, then the height stop function is provided, but the overall device complexity increases
Solution Approach 1:
The height stop tab is formed as an integral part of the front frame, reducing the number of separate parts. This simplifies the overall device structure while ensuring the height stop function is permanently provided, as the tab is structurally integrated with the front frame and cannot be easily removed.
4Reliability
If the height stop is made as an integral part of the front frame, then the height stop cannot be easily removed, but the manufacturing process becomes more complex
Solution Approach 1:
The front frame is manufactured with the height stop tab as an integrated feature, allowing the tab to be formed as part of the frame structure. This can be achieved through stamping, bending, or other forming processes that create the tab as a continuous piece with the frame, ensuring permanent function while maintaining manufacturing efficiency.
Data Source
AI summary
A dishwasher includes a wash container for receiving items to be washed and a front frame which has an open bottom and an upper frame run and is disposed in surrounding relationship to a front loading opening of the wash container. The front frame has a cross-sectional profile and is provided with at least one height stop that projects beyond the cross-sectional profile in height and is configured as a tab in the upper frame run.