Display Panel Mounting Base With Barrier Frame for Flat Front Sheets
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Solution Overview
Problem
Household appliances with display panels often exhibit surface irregularities and unevenness due to the expansion and hardening of polyurethane insulation material under the aluminum foil, affecting manufacturing quality, especially in high-end products.
Innovation Solution
A protective frame enclosure made of expandable polystyrene material is secured around the display panel slot, with an aluminum foil sheet covering the rear surface, preventing polyurethane from reaching under the foil and creating a barrier against insulation material flow, ensuring a smooth surface around the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyurethane insulation material is applied over aluminum foil to insulate the display panel, then insulation performance is improved, but surface irregularities and unevenness occur on the front sheet
Solution Approach 1:
A protective frame enclosure made of expandable polystyrene material is introduced as an intermediary barrier between the polyurethane insulation material and the aluminum foil. This frame prevents the polyurethane from reaching under the aluminum foil and deforming the front sheet, while still allowing the insulation material to provide thermal insulation. The frame acts as a mediator that enables both insulation performance and surface flatness to coexist.
Solution Approach 2:
The protective frame enclosure is divided into two separate U-shape members that are joined together to form the complete frame. This segmentation allows for easier manufacturing and assembly, while the complete frame structure effectively prevents polyurethane infiltration and maintains surface flatness around the display panel.
2Manufacturing precision
If aluminum foil is adhered to the rear surface of the display panel slot to prevent polyurethane infiltration, then surface flatness is improved, but condensation may occur within the display panel slot
Solution Approach 1:
The protective frame enclosure serves as an intermediary structure that prevents direct contact between the polyurethane insulation material and the aluminum foil, eliminating the need for the aluminum foil to serve as a barrier against polyurethane infiltration. This allows the aluminum foil to focus on its primary function of preventing condensation, while the frame handles the task of maintaining surface flatness by blocking polyurethane flow.
3Strength
If the protective frame enclosure is made as a single-piece unit, then structural integrity is improved, but manufacturing complexity and assembly difficulty increase
Solution Approach 1:
The protective frame enclosure is segmented into two U-shape members that can be manufactured separately and then joined together to form the complete frame. This segmentation simplifies the manufacturing process for each individual component while the joining of the two members creates a structurally intact frame that effectively prevents polyurethane infiltration and maintains surface flatness.
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 solution effectively eliminates surface irregularities and unevenness around the display panel, enhancing the manufacturing quality of high-end household appliances by maintaining a flat front sheet surface and preventing condensation within the display panel slot.
Implementation Method 1
A protective frame enclosure made of expandable polystyrene material is secured around the display panel slot... creating a barrier against insulation material flow
Implementation Method 2
an aluminum foil sheet covering the rear surface, preventing polyurethane from reaching under the foil and creating a barrier against insulation material flow, ensuring a smooth surface around the display panel... preventing condensation within the display panel slot
Data Source
Figure 1
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AI summary
The present invention relates to an electrical household appliance having a first side with a display panel (1) providing an information display means and operation control elements to set different operation settings of the household appliance and provided within a first-side sheet (2) portion of the household appliance, the display panel (1) being attached to the first-side sheet (2) in a display panel slot (3) having a second-side surface (4) facing approximately 180 degrees away from the first side. A protective frame enclosure (6) is secured around surface edges of the second-side surface (4) of the display panel slot (3).