Front-Mounted Display Window Frame for Media-Tight Appliance Panels
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Solution Overview
Problem
Existing domestic appliance display windows face challenges in achieving high transparency and a media-tight seal, particularly when inserted from the backside into a housing panel, leading to blurred edges, limited visual impression, and increased installation costs due to complex in-mold processes.
Innovation Solution
A multi-component process is used to produce a display window with a frame that is fixedly connected to the viewing area, allowing assembly from the front side, eliminating the need for costly in-mold processes and enabling a full media-tight seal, while maintaining a clear and continuous visual appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display window is inserted from the backside and welded or glued, then a media-tight seal is achieved, but a blurred edge region is produced and the visual impression is reduced
Solution Approach 1:
The patent inverts the conventional installation direction by inserting the display window from the front side instead of the backside. The frame is designed with a rearward protrusion that engages with the panel from the front, allowing the window to be secured while maintaining a clear viewing area without blurred edges.
Solution Approach 2:
The display window is segmented into a transparent viewing area and a separate frame structure. The frame contains the rearward protrusion for securing to the panel, while the viewing area remains clear and unobstructed, separating the sealing function from the visual display function.
2Reliability
If the display window is inserted from the backside, then a media-tight seal is achieved, but installation space requirements increase
Solution Approach 1:
The patent reverses the installation approach by securing the display window from the front side. The frame's rearward protrusion engages with the panel structure without requiring deep recesses behind the panel, significantly reducing the space requirement behind the panel while still achieving a media-tight seal.
3Ease of manufacture
If the display window is only snapped in or clamped, then installation complexity is reduced, but a liquid-tight seal cannot be achieved
Solution Approach 1:
The patent merges the mechanical securing function and the sealing function into a single integrated frame structure. The frame with its rearward protrusion provides both the clamping action for simple installation and the necessary sealing contact with the panel to achieve a liquid-tight seal, eliminating the need for separate sealing components.
4Reliability
If a finished window is back-injected with a film, then a media-tight seal is achieved, but installation costs increase
Solution Approach 1:
The patent extracts the sealing function from a separate post-installation film application and integrates it directly into the frame structure itself. The frame's rearward protrusion and contact surfaces provide the media-tight seal as an inherent feature of the installation process, eliminating the need for additional film back-injection steps and associated costs.
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 approach results in a larger, visually unobstructed display window with a seamless integration, providing a media-tight and air-tight connection, reducing installation complexity and costs, and enhancing the durability of the appliance.
Implementation Method 1
the frame may be welded to the housing part, in particular to a plastic panel, fully media-tight
Implementation Method 2
The entire display window can be glued and/or welded to the receiving area of the panel from the front
Data Source
AI summary
A domestic appliance with at least one display window with an externally visible, at least partially transparent viewing area for program data or similar information is produced with in a multi-component process and constructed so that the display window has at least one frame fixedly connected with the viewing area for affixing the display window to parts of a housing of the domestic appliance.