Laundry Door Porthole Window Rib-Lock Structure Against Glass Sliding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional front-loading laundry washing and drying machines experience issues with the glass porthole window sliding out of alignment due to its weight, leading to water and detergent leakage, snagging of laundry, and potential door breakage, as existing solutions either add unnecessary weight or fail to provide adequate stability during operation.
Innovation Solution
A door design featuring a glass porthole window with a border portion having receiving regions and ribs on the inner and outer frames, along with an insert that screws into place, providing a secure fit and counter-hinge for enhanced stability and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a glass porthole window is used to allow users to see the interior during operation, then transparency and heat endurance are improved, but the weight of the door increases excessively
Solution Approach 1:
The door is divided into multiple components: inner frame, outer frame, glass porthole window, and insert. This segmentation allows the heavy glass window to be isolated and supported by specific structural elements (ribs and insert) rather than requiring the entire door structure to be overly robust, thus managing weight distribution effectively.
Solution Approach 2:
An insert is introduced as an intermediary element between the inner frame and outer frame. This insert provides additional support for the glass porthole window, distributing the weight load and preventing the glass from sliding, thereby solving the weight-related stability issue without requiring the glass itself to be lighter.
2Volume of stationary object
If the glass porthole window is made bowl-like to fill the dead space between housing casing and rotating drum, then the dead space is eliminated, but the glass volume and weight increase significantly
Solution Approach 1:
The door structure is segmented into functional zones: the bowl-like glass porthole handles the dead space filling function, while the ribs and insert handle the structural support function. This allows the glass to be optimally shaped for space utilization without requiring excessive thickness for structural reasons.
Solution Approach 2:
The door assembly uses composite construction combining glass (for transparency and heat resistance), plastic materials (for frames and insert), and metal (for hinge). This composite approach allows each material to be used where it provides the most benefit, optimizing both the bowl shape for space filling and the overall structural efficiency.
3Manufacturing precision
If the glass porthole window is firmly fixed to prevent sliding, then alignment precision is maintained, but the door structure becomes more complex
Solution Approach 1:
The fixation system is segmented into simple geometric elements: ribs protruding from the inner frame and corresponding receiving regions in the outer frame. These segmented features work together to locate and secure the glass porthole window in precise alignment without requiring complex fastening mechanisms.
Solution Approach 2:
The rib-receiving region structure provides self-aligning and self-locating functionality. The geometry of the ribs and receiving regions automatically ensures proper positioning of the glass porthole window during assembly, eliminating the need for additional alignment fixtures or complex adjustment mechanisms.
Data Source
AI summary
A door (125, 125′, 125″) for a laundry washing and/or drying appliance (100) includes a door inner frame (205, 205′, 205″), a door outer frame (210, 210′, 210″), and a transparent porthole window (150) having a border portion (225) fitted between the inner frame and the outer frame. In the solution according to one or more embodiments of the present invention, the border portion of the porthole window has at least one receiving region (230) having, at least on one side thereof facing the inner frame or the outer frame, a seat (235); at least the inner frame or the outer frame has, in a portion (240, 250) corresponding to the receiving region (230) of the porthole window, at least one rib (245, 255) fitting into the seat (235) of the receiving region (230).