KR20040026563A - Key pad assembly of mobile phone - Google Patents

Abstract

PURPOSE: A key pad assembly of a mobile communication terminal is provided to allow a user to arrange a key board to his/her taste by enabling the key board to be coupled detachably at an upper surface of key buttons and have diverse colors and signs. CONSTITUTION: When a plurality of key buttons(101) formed protruded on a key pad(100) are inserted into a plurality of button holes formed at a casing frame, each upper surface of the key buttons(101) is a bit protruded from the surface of the casing frame and character plates(103) are coupled thereon. The character plates(103) fixedly coupled on the key button(101) is easily detached when an upper plate part(105) is pulled out with an external force, namely, with a force stronger than a coupling force between an engaging hole(102) and a protrusion(104). When a user presses the character plates(103) coupled on each key button(101) according to a phone number of the other party or a text message, a specific signal is generated so that the user can make a call communication or exchange a text message with the other party. If a sign(106) displayed at the upper surface of one character plate(103) is worn away because of frequent use of the character plate(103), the corresponding character plate(103) is separated from the key button(101) and new character plate is coupled thereon.

Description

Keypad assembly for mobile terminal {KEY PAD ASSEMBLY OF MOBILE PHONE}

The present invention is provided with an independent dial that can be detached from the keypad, and the mobile communication that can be used to replace the dial of various colors according to the user's personality and when the characters and figures displayed on the key button worn as long or frequent use of the terminal A keypad assembly of a terminal.

In general, a mobile communication terminal uses a keypad or a touch screen as a key input means for inputting a number of a counterpart. In particular, the keypad uses a method in which a keypad rubber having a plurality of key buttons integrally presses a metal dome mounted on a printed circuit board of the main body to apply a signal by grounding a carbon contact portion on the printed circuit board. .

The conventional mobile communication terminal 1 has a main body 10 composed of an upper casing frame 11 and a lower casing frame 12 and a user's selection on the main body 10 as shown in FIG. The hinge body 30 is configured to open and close the sub-body 20 and the main body 10 to be opened and closed along the main body 10.

An antenna device (not shown) is installed at one side of the top end of the main body 10.

In addition, an earpiece portion 21 is positioned on the surface of the subbody 20 in contact with the main body 10, and an LCD module 22 that is a display device under the earpiece portion 21. ) Is installed.

The keypad 13 and the microphone device 14 are sequentially positioned on the upper casing frame 11 of the main body 10 in contact with the subbody 20.

2 is a partial cross-sectional view showing a state in which the keypad 13 of the conventional mobile communication terminal 1 is mounted on the main body 10, wherein the keypad 13 made of silicon has an upper casing frame of the main body 10; It was installed at (11).

A plurality of key buttons 13a are integrally protruded on the keypad 13 and inserted into the plurality of button holes 11a formed in the upper casing frame 11, respectively, and the upper surfaces thereof are the upper casing frame 11. Protruded slightly into the plane of).

In addition, a sign (character, number, figure) 15 is displayed on the upper surface of each key button 13a.

A printed circuit board 30 having a predetermined pattern is mounted in the main body 10. The metal dome 31 is attached to a position corresponding to the key button 13a so that the key button 13a is attached. Pressing the button causes the force to elastically deform the upper end of the metal dome 31 to be grounded with a carbon contact (not shown) on the lower printed circuit board 30 so that a circuit signal corresponding to this carbon contact ( A signal corresponding to a code (character, number, figure) 15 displayed on the key button 13a is displayed on the LCD 22 of the subbody 20 by generating a signal.

Therefore, the user of the terminal 1 performs specific wireless communication according to the sign 15 of the key button 13a.

However, as described above, the terminal user frequently presses a key button marked with a corresponding code so as to perform a specific wireless communication, thereby causing a problem that the code displayed on the key button is worn out and erased.

Due to the occurrence of such a problem, the keypad should be replaced. However, in order to replace the keypad, the upper casing frame and the lower casing frame of the main body must be disassembled. Even if the code displayed on the key button is worn out, the entire keypad must be replaced, resulting in economic and material loss.

In addition, since the keypad and each key button has a single color, there is a disadvantage that it does not suit the taste of the new generation, which has a strong personality that emphasizes colorful colors and various fashions.

Therefore, the present invention has been devised in view of such a point, and in particular, it is possible to attach and detach the upper surface of each key button. The object is to decorate the upper surface of each key button according to the user's taste, and to prevent the keypad from being replaced as a whole according to the wear of the code displayed on the key button as in the prior art.

In order to achieve the above object, the present invention provides a keypad of a mobile terminal having a plurality of key buttons protruded on one surface; A mobile communication terminal including a dial formed on an upper surface of the key button, the upper plate portion covering the upper surface of the keypad and a dial formed integrally with the lower surface of the upper plate portion and formed with protrusions pressed into the fastening groove. To provide a keypad assembly.

1 is an external perspective view of a conventional mobile communication terminal.

Figure 2 is a partial cross-sectional view showing a state in which the keypad of the conventional mobile communication terminal is mounted on the main body.

3 is a perspective view of a keypad assembly according to the present invention;

4 is a cross-sectional view taken along line AA ′ of FIG. 3.

5 is an external perspective view of a mobile communication terminal equipped with a keypad assembly according to the present invention.

*** Explanation of symbols for main parts of drawing ***

100: keypad 101: key button

102: fastening groove 103: dial

104: protrusion 105: the upper plate

106: sign

When described in detail with reference to Figures 3, 4, 5 attached to the configuration and the embodiment of the present invention.

3 is a perspective view illustrating a keypad assembly according to the present invention, FIG. 4 is a cross-sectional view taken along line AA ′ of FIG. 3, and FIG. 5 is an external perspective view of a mobile communication terminal equipped with the keypad assembly according to the present invention.

As shown in FIG. 3, the fastening groove is formed on the upper surface of all the key buttons integrally protruding integrally on one surface of the keypad of the silicon and rubber material as shown in FIG. 3, and covers the upper surface of the keypad. The upper plate portion and the lower surface of the upper plate portion is integrally formed with a dial formed of a projection which is pressed into the fastening groove.

The outer surface of the dial is formed in various colors, and various symbols (numbers, figures, letters) are displayed on the upper surface of the upper panel.

Reference numeral 110 is a mobile communication terminal, 111 is an upper casing frame, 111a is a buttonhole, 112 is a lower casing frame, and 113 is a main body.

Referring to Figures 4 and 5 attached to the correct embodiment of the present invention configured as described above in detail as follows.

In the keypad assembly according to the present invention, as shown in FIG. 5, the keypad 100 is installed in the upper casing frame 11 of the main body 113 of the terminal 110.

Then, the plurality of key buttons 101 protruding from the keypad 100 are respectively inserted into the plurality of button holes 111a formed in the upper casing frame 111, and the upper surface thereof is one of the upper casing frames 111. It slightly protrudes in a plane, and the dial 103 is combined thereon.

Referring to the state in which the dial 103 is coupled to the key button 101 in more detail, as shown in FIG. 4, the protrusion 104 is press-fitted into the fastening groove 102 formed in the upper surface of the key button 101. Thus, the dial 103 is fixedly coupled to the key button 101 in a state where the upper plate portion 105 having the reference numeral 106 indicated on the upper surface thereof covers the upper surface of the key button 101.

In addition, the dial 103 fixedly coupled to the key button 101 is easily separated by holding and pulling the upper plate portion 105 above a certain external force, that is, a coupling force between the fastening groove 102 and the protrusion 104.

In this way, in order to exchange a call and a text message with the other party to the terminal 110 equipped with the present invention, pressing a dial 103 coupled on the key button 101 according to the phone number and text message of the other party is a specific signal It is generated and exchanges calls and text messages with the other party.

For reference, since the generation process of the specific signal is irrelevant to the present invention, the description thereof is omitted.

As such, when the dial 106 is frequently worn on the upper surface of the upper plate portion 105 as the dial 103 is frequently used to exchange calls and text messages with the other party, the dial is described with reference to FIG. 4. Separate 103 from the key button 101 to combine the new dial.

In addition, by providing the dial 103 in a different color and coupled to each key button 101, it is possible to produce a design distinguished from the user's taste and others.

As described above, the present invention has an effect that the keyboard arrangement can be made according to the user's own preference by having a dial that is detachably coupled to the upper surface of the key button and has various colors and codes.

In addition, since only the parts where characters are worn can be easily replaced separately, the characters displayed on a specific key button are worn out as in the prior art, thereby preventing the entire keypad from being replaced, thereby improving economic efficiency and saving material. have.

Claims (2)

In the keypad of the mobile communication terminal protruding a plurality of key buttons on one surface; Forming a fastening groove on the upper surface of the key button, The keypad assembly of the mobile communication terminal comprising a top plate portion covering the upper surface of the keypad and a dial formed integrally protruding from the lower surface of the upper plate portion is formed into a projection which is pressed into the fastening groove. The method of claim 1, The outer surface of the dial is formed in a variety of colors, the keypad assembly of a mobile communication terminal, characterized in that various symbols (numbers, figures, characters) are displayed on the upper surface of the upper plate.