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Metal keypad assembly for mobile phone and manufacturing method of keypad

A mobile phone keyboard and keyboard assembly technology, applied in electrical components, telephone structure, electrical switches and other directions, can solve the problems of small mobile phone, increased cost, increased production mold cost, etc., and achieve the effect of improving interest and good adaptability

Inactive Publication Date: 2007-03-14
SENSETECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes it difficult to make the phone thinner due to the thicker keyboard
[0007] In addition, the keyboard 120 should be formed by a support tool that is separately manufactured according to the original design, thus increasing the cost of making molds
Moreover, since the keyboard is assembled from multiple components, it takes a long time to assemble the keyboard, thereby increasing the manufacturing cost of the keyboard
Therefore, the cost of the product will increase relatively

Method used

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  • Metal keypad assembly for mobile phone and manufacturing method of keypad
  • Metal keypad assembly for mobile phone and manufacturing method of keypad
  • Metal keypad assembly for mobile phone and manufacturing method of keypad

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Referring to Figures 2 to 4, the cell phone includes a housing 10 and a keypad assembly 40, wherein the housing 10 is used to hold a printed circuit board 60 and a dome switch 70, the printed circuit board 60 having a plurality of stationary contacts 61 , the contact switch 70 has a plurality of movable contacts 71 and is arranged on the printed circuit board 60 , and the keyboard assembly 40 is used to operate the movable contacts 71 of the contact switch 70 . The keyboard assembly 40 includes a keyboard 41 and a plurality of metal keys 43, wherein the keyboard 41 is placed on the contact switch 70, and has a plurality of protrusions 42 protruding from positions corresponding to the movable contacts 71, each of the metal keys The keys 43 are respectively arranged on the keyboard 41 at positions corresponding to each protrusion 42, and protrude from the surface of the housing 10 by a predetermined height, and each of the metal keys is formed with a numerical value and / or...

Embodiment 2

[0067] Referring to Figures 5 to 10, a keyboard assembly is provided, which is placed on the circuit board of the mobile phone for operating the movable contacts of the button part 1, the keyboard assembly includes: a contact base 10, which is made of synthetic resin formed, and covers the movable contact 2, and has a plurality of contact protrusions 11 protruding downward from the position corresponding to the movable contact 2 on the contact base to operate Button part 1; metal key 20, which has a keyboard 21 and a shell part 22, the keyboard 21 covers the upper surface of the contact base 10, and is formed with a punching part of numbers and / or characters corresponding to the contact protrusions 11 , the shell portion 22 surrounds the keyboard 21 ; and a molded portion 30 is filled in the punched portion of the metal key 20 connected with the contact base 10 .

[0068] As shown in FIGS. 5 and 6 , the contact base 10 covers the movable contact 2 and has a plurality of contac...

Embodiment 3

[0082] Referring to Figures 11 to 17, there is provided a method of manufacturing a keypad assembly for a mobile phone having a housing for holding a printed circuit board having a plurality of stationary contacts and a plurality of movable contacts disposed on said printed circuit board. A contact switch on a circuit board, the method comprising the steps of: generating a keyboard design scheme; preliminary machining a metal plate to form a metal keyboard having the same design scheme as the keyboard and integrated with a plurality of metal keys; Screen printing, metal masking, dosing discharge of discharger, or spraying to process a plurality of metal keys and fix the base film that does not undergo shrinkage deformation; and only to the connection portion between the metal keys Perform secondary machining.

[0083] As shown in FIG. 11 , the keyboard assembly includes a keyboard base 60 and a plurality of metal keys 43 , the keyboard base 60 covers a contact switch 70 , the ...

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PUM

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Abstract

Disclosed herein are a composition for stabilizing Epigallocatechin gallate (EGCG) in water phase comprising 0.1-25.0% by weight of Epigallocatechin gallate, 0.1-5.0% by weight of a cationic polymer, an anionic polymer or a mixture thereof, 0.1-10.0% by weight of antioxidant in a remainder of water or the mixture of water and a hydrophilic solvent and a preparation method thereof. The composition is not easily decomposed in water phase as well as in external envionment consisting of temperature change, light effect etc. because the composition is stabilized by reacting with a cationic polymer or an anionic polymer.

Description

technical field [0001] The present invention relates to a keyboard assembly for operating a contact switch of a mobile phone, in particular, to a keyboard assembly having a keyboard made of metal and a manufacturing method thereof, so that the color of the keyboard can be diversified, And the thickness of the keyboard can be reduced, and the keyboard can be easily formed. Background technique [0002] A mobile phone is a wireless communication device that can be carried by users. Such mobile phones are manufactured in various types including a bar type mobile phone with exposed buttons, a flip type mobile phone with a flip cover for easy portability, a foldable compact mobile phone developed to further improve portability, and the like. [0003] In addition, a cell phone includes a keypad assembly as an input device performing various functions of wireless communication. The keyboard assembly has a keyboard made of flexible synthetic resin such as silicone or rubber, and r...

Claims

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Application Information

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IPC IPC(8): H04M1/23
CPCH01H13/70H04M1/23
Inventor 金学元裴知雄
Owner SENSETECH
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