Flip Cover Plate With Bonded Transparent Window
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Solution Overview
Problem
Conventional manufacturing of flip cover plates for mobile terminals using numerically controlled machine tools results in low production efficiency, high costs, and inconsistent product reliability due to skill-dependent processing errors.
Innovation Solution
The use of an injection molding process to form a cover plate with a separately attached transparent window, which includes a bonding mechanism and reinforcing members, reduces processing time and costs while enhancing product reliability and durability by eliminating skill-dependent errors and allowing for mass production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If individual processing through a machine tool is used to manufacture cover plates, then processing flexibility is maintained, but production efficiency is low and manufacturing costs are high
Solution Approach 1:
The cover plate manufacturing process is segmented into separate functional components: the main cover plate body and the transparent window are manufactured independently through injection molding, then assembled together. This segmentation allows each component to be optimized separately and assembled through simple bonding, dramatically improving production efficiency while reducing manufacturing complexity
Solution Approach 2:
The transparent window and the cover plate body are merged into a single assembled product through bonding. This merging of separately manufactured components creates a unified functional unit that combines the advantages of both parts while enabling mass production through parallel manufacturing processes
2Reliability
If individual processing through a machine tool is used, then customizability is possible, but manufacturing costs increase and consistency decreases
Solution Approach 1:
The transparent window is extracted as a separate component from the cover plate body, allowing it to be manufactured independently through injection molding. This extraction enables standardized mass production of both components, ensuring consistent quality and reducing manufacturing costs while eliminating skill-dependent variability
Solution Approach 2:
The manufacturing method is changed from subtractive machining to additive injection molding. This parameter change in the manufacturing process enables high consistency through standardized mold-based production, significantly reducing costs while maintaining the ability to customize through mold design
3Productivity
If a transparent window is attached separately to the cover plate, then production efficiency increases, but bonding reliability may be compromised
Solution Approach 1:
Bonding protrusions are pre-formed on the transparent window and corresponding bonding grooves are pre-formed on the cover plate body during the injection molding process. This preliminary action ensures precise alignment and strong bonding when the components are assembled, maintaining bonding reliability while enabling efficient mass production
Solution Approach 2:
The bonding protrusions and grooves act as mechanical intermediaries that enhance the bonding interface between the transparent window and cover plate body. These features provide physical interlocking that supplements the adhesive bonding, ensuring reliable attachment while allowing for efficient assembly in mass production
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 significantly reduces manufacturing time and costs, minimizes defects, and enhances product reliability and durability by providing a stable and strong transparent window that prevents damage from user interaction.
Implementation Method 1
a bonding groove corresponding to the bonding part may be formed in the seating hole to guide the transparent window to be seated while the bonding part and the bonding groove, engaged with each other, are simultaneously bonded by an ultrasonic wave
Implementation Method 2
a bonding groove corresponding to the bonding part may be formed in the seating hole to guide the transparent window to be seated while the bonding part and the bonding groove, engaged with each other, are simultaneously bonded by an ultrasonic wave or heat
Data Source
AI summary
The present invention relates to a flip cover plate (10) for a mobile terminal, the plate comprising: a cover plate inserted into a flip cover which opens and closes the front portion of the mobile terminal; and a transparent window coupled to one side of the cover plate and exposing a portion of a liquid crystal of the mobile terminal to the outside when the flip cover is positioned at the front portion of the mobile terminal, wherein the transparent window is configured to be bonded to at least one surface of the cover plate corresponding to in opening of the flip cover. Accordingly, the present invention has an advantage of maximizing productivity compared to production through one by one cutting processes by means of a conventional numerically controlled machine tool. Furthermore, since the transparent window is not simultaneously molded when the cover plate is injection-molded, the present invention has advantages of simplifying the shape of a mold, thereby being capable of reducing manufacturing costs, as well as reducing manufacturing time and also the failure rate of products since the manufacturing of parts proceeds in parallel.