Display Module Centering Joint for Flush Sealing
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Solution Overview
Problem
Conventional silicone gaskets used in motor vehicle display devices for sealing and achieving a 'flush' surface alignment are unattractive, prone to bulging, and fail to maintain the desired flush effect due to manufacturing tolerances and centering issues.
Innovation Solution
A display module with a centering joint made of polyester thermoplastic elastomer, which provides flexibility, resistance, and precise dimensional stability, filling the gap between the filling plate and the facade opening, ensuring a flush surface and precise centering, along with a touch screen glued to the filling plate for enhanced control and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a silicone gasket is used for sealing the display device to the facade, then sealing is achieved, but the gasket bulges and destroys the flush effect
Solution Approach 1:
The patent changes the material parameters by replacing silicone rubber with polyester thermoplastic elastomer, which has different mechanical properties including lower elasticity and better dimensional stability. This parameter change prevents the gasket from bulging while maintaining sealing effectiveness, thus preserving the flush effect between the display device and facade.
Solution Approach 2:
The patent uses a composite material approach by selecting polyester thermoplastic elastomer that combines the flexibility needed for sealing with the dimensional stability required to prevent bulging. This composite material property combination resolves the contradiction between achieving reliable sealing and maintaining the aesthetic flush appearance.
2Reliability
If a silicone gasket is deposited in liquid form, then sealing is achieved, but the visible thickness varies due to centering issues
Solution Approach 1:
The patent applies preliminary action by pre-forming the gasket in a molded state with precise dimensions before installation, rather than depositing it in liquid form during assembly. This pre-formed gasket includes integrated centering features that ensure accurate positioning, eliminating variations in visible thickness caused by centering issues during assembly.
Solution Approach 2:
The patent replaces the liquid deposition mechanical process with a molded pre-formed gasket system. This substitution provides inherent dimensional precision and centering capabilities through the molding process itself, eliminating the need for manual centering adjustments and ensuring consistent sealing thickness.
3Ease of manufacture
If the display device is placed in an opening in the facade, then mounting is achieved, but maintaining both sealing and flush alignment is difficult
Solution Approach 1:
The patent introduces an intermediary element - the pre-formed polyester gasket with integrated centering features - that mediates between the display device and the facade opening. This intermediary provides both sealing functionality and precise alignment guidance, making it easy to mount the display device while maintaining high alignment precision and flush appearance.
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
The solution achieves a precise, aesthetically pleasing flush surface with improved sealing and centering, reducing manufacturing play and refraction effects, while being easier to install than traditional silicone seals.
Implementation Method 1
a centering joint made of a polyester thermoplastic elastomer material to fill the gap between the filling plate and the edge of the opening of the facade
Implementation Method 2
the sub-module being fixed by gluing against a peripheral edge of the support frame
Implementation Method 3
a touch control panel, for example capacitive or resistive. In the latter case, the touchpad makes it possible to determine the coordinates of the pressure of a user's finger
Implementation Method 4
a touch control panel, for example capacitive or resistive
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The present invention relates to a display module (5) including a flat screen (7) and a frame (9) for supporting said flat screen (7), characterized in that it further comprises a submodule (43) having a filler plate (45) made of a transparent material substantially having the size of a front opening (15) for receiving the display module (5) while leaving a gap between the filler plate (45) and the edge of the front opening (15), and in that it includes a centering gasket (51), made of a polyester thermoplastic elastomer material, for filling the gap between the filler plate (45) and the edge of the front opening (15).