Touch Panel Protective Sheet Attachment Mechanism
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Solution Overview
Problem
The existing methods for attaching protective sheets to touch panels are cumbersome due to the need for forceful insertion of protrusions into gaps between the sealing gasket and the operation display screen, and the touch panels lack chemical resistance, risking deterioration from disinfection materials.
Innovation Solution
A touch panel apparatus with a roughly rectangular shape, featuring a transparent protective sheet and holding parts on the lower and lateral sides to easily attach and detach the protective sheet, reducing the complexity of attachment and providing chemical resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protective sheet is attached using partial protrusions that need to be forcefully inserted into gaps between the sealing gasket and the operation display screen, then the protective sheet can be securely attached, but the attachment process becomes cumbersome and difficult
Solution Approach 1:
The patent introduces a sealing gasket as an intermediary component between the operation display screen and the protective sheet. The gasket provides a dedicated engagement structure (groove and protrusion system) that mediates the connection, making the attachment process easier while maintaining secure fixation. The gasket acts as a buffer that simplifies the interface between the screen and protective sheet.
Solution Approach 2:
The attachment system is segmented into distinct functional components: the operation display screen, the sealing gasket with engagement structures, and the protective sheet with corresponding protrusions. This segmentation allows each component to be optimized independently, with the gasket providing the complex engagement geometry while the protective sheet remains simple for easy attachment and detachment.
2Ease of operation
If the touch panel is used without a protective sheet, then the attachment process is simple, but the touch panel lacks chemical resistance and may deteriorate from disinfection materials
Solution Approach 1:
The protective sheet is designed as a disposable or easily replaceable component that can be attached and detached as needed. This allows the use of a simple, inexpensive transparent sheet that provides chemical resistance during disinfection periods, while the main touch panel remains unaffected. The sheet can be removed when not needed, maintaining simplicity.
Solution Approach 2:
The protective sheet is implemented as a thin, flexible transparent film that conforms to the touch panel surface. This thin film structure provides the necessary chemical barrier against disinfection materials while maintaining optical transparency and tactile responsiveness. The flexibility allows for easy attachment and detachment without damaging the underlying touch panel.
3Object-affected harmful factors
If a protective sheet with chemical resistance is added to the touch panel, then chemical resistance is improved, but the device structure becomes more complex
Solution Approach 1:
The sealing gasket serves multiple functions simultaneously: it provides the engagement structure for attaching the protective sheet, maintains the seal between the screen and housing, and facilitates the chemical resistance function. By making the gasket multi-functional, the patent avoids adding separate components for each function, thereby limiting the increase in overall structural complexity.
Solution Approach 2:
The patent merges the protective function with the existing sealing gasket structure. The engagement protrusions and grooves that were originally designed for sealing purposes are also used for securing the protective sheet. This merging of functions reduces the number of separate components needed, as the gasket simultaneously provides both sealing and protective sheet attachment capabilities.
Data Source
AI summary
Cumbersomeness that is caused when a protective sheet is attached over a touch panel is alleviated. A touch panel apparatus (10) according to an example embodiment includes a roughly rectangular touch panel (13), a transparent protective sheet (12) having a shape roughly identical to that of the touch panel (13) and detachably disposed so as to cover a front surface of the touch panel (13), a lower-side holding part (11a) that holds the protective sheet (12), disposed on a lower side of the touch panel (13), and a left-side holding part (11b) and a right-side holding part (11c) that hold the protective sheet (12), disposed on two lateral sides, respectively, of the touch panel (13), the two lateral sides being adjacent to the lower side of the touch panel (13).