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Keyboard and its preparation method and application

A keyboard and keycap technology, which is applied in the direction of telephone structure, electrical components, electrical switches, etc., can solve the problems of labor-intensive, need to be deepened, and complicated keyboard production process.

Active Publication Date: 2019-01-11
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production process of traditional mobile phone keyboards is cumbersome, especially the assembly process from one key to the keyboard consumes a lot of manpower, so it is very meaningful to produce an integrated keyboard with a good feel
[0003] However, the current research on keyboard technology still needs to be deepened.

Method used

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  • Keyboard and its preparation method and application
  • Keyboard and its preparation method and application
  • Keyboard and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Bonding of hard rubber sheet and TPU sheet

[0041] The PET hard rubber sheet with a thickness of 0.2 mm and the TPU sheet with a thickness of 0.1 mm are bonded together by glue (UV curable adhesive or hot melt adhesive is usually used). details as follows:

[0042] First place the glue in a vacuum box to evacuate the glue to ensure that there are no air bubbles in the glue, then print the glue on the upper surface of the TPU by screen printing, attach the upper surface of the TPU with the printed glue to the PET hard rubber sheet, and roll it through the roller. Pressing, and then heating or ultraviolet radiation to fully cure the glue to achieve the ideal bonding effect, so as to obtain a hard rubber sheet-substrate composite board. Among them, the rolling process needs to ensure that the rolling is smooth and free of air bubbles. The selected glue needs to be transparent without affecting light transmission, and the thickness of the glue printing is 10 microns. ...

Embodiment 2

[0061] The keyboard is prepared by the same method as in Example 1, the difference is that the hard rubber sheet is a PC sheet and its thickness is 0.5 mm, and the thickness of the TPU sheet is 0.2 mm. During the bonding process of the hard rubber sheet and the substrate, glue The thickness of the printing is 8 microns, the temperature of the upper mold is 115°C, the temperature of the lower mold is 95°C, and the molding pressure is 120kg / cm 2 .

Embodiment 3

[0063] The keyboard is prepared by the same method as in Example 1, the difference is that the hard rubber sheet is a PMMA sheet and its thickness is 0.8 mm, and the thickness of the TPU sheet is 0.15 mm. During the bonding process of the hard rubber sheet and the substrate, glue The thickness of the printing is 5 microns, the temperature of the upper mold is 110°C, the temperature of the lower mold is 90°C, and the molding pressure is 110kg / cm 2 .

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Abstract

The invention provides a keyboard and a preparation method and an application thereof. The preparation method of the keyboard comprises the steps that (1) the upper surface of a substrate is adhered with a hard rubber plate by utilizing an adhesive agent so that a hard rubber plate-substrate composite plate is acquired; (2) the hard rubber plate of the hard rubber plate-substrate composite plate is cut so that multiple key caps are formed; (3) and multiple silica gel protrusion parts are formed at the preset positions of the lower surface of the substrate through thermal compression formation by utilizing liquid silica gel, wherein the multiple silica gel protrusion parts are corresponding to the multiple key caps in a one-to-one way. The key caps are formed via cutting without redundant assembling process so that the technology is simple and cost is low; and the substrate and whole surface of the hard rubber plate are adhered and then the key caps are formed through cutting so that a problem of falling of the key caps can be effectively avoided.

Description

technical field [0001] The present invention relates to the technical field of keyboards, in particular, to a keyboard and a preparation method and application thereof. Background technique [0002] With the rise and development of smart touch-screen mobile phones, the feature phone market has been greatly impacted. How to further reduce the cost of feature phones and maintain the advantages of feature phones is very important in the sustainable development of the feature phone industry. As an important component of a feature phone, the keyboard is an important factor in the cost of the feature phone. The production process of traditional mobile phone keyboards is cumbersome, especially the assembly process from single key to keyboard consumes a lot of manpower, so it is very meaningful to produce an integrated keyboard with good hand feeling. [0003] However, the current research on keyboard technology still needs to be deepened. Contents of the invention [0004] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H13/88H01H13/704H01H13/705H04M1/23
Inventor 马建江华胜莫均瑜
Owner BYD CO LTD
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