KR100768269B1 - Uppercase unified with buttons and personal portable device having the uppercase - Google Patents

Abstract

Disclosed are a front case and a personal portable terminal, which are integrally injected with a cantilever button part, which is easy to manufacture and can significantly reduce thickness. At least one button hole is formed in the front case of the personal portable terminal, and a plurality of cantilever button portions connected to one side of the button hole and separated from the pad body are provided, and the cantilever button portion mounted to the button hole of the front case is provided. And a key input sensor unit including a push sensor corresponding to each. The manufacturing of the cantilever button portion of a personal portable terminal using the front case which is integrally injected with the cantilever button portion is easy to manufacture, and can reduce the number of manufacturing processes, thereby reducing the defect rate of the product and lowering the manufacturing cost. . In addition, it is possible to manufacture a much thinner button portion compared to the conventional key input portion can bring a slimmer portable personal terminal.

Cantilever button unit, personal portable terminal

Description

UPPERCASE UNIFIED WITH BUTTONS AND PERSONAL PORTABLE DEVICE HAVING THE UPPERCASE}

1 is an exploded perspective view illustrating a key input unit in a conventional mobile phone.

2 is a cross-sectional view for explaining a conventional key input unit.

3 is an exploded perspective view of a personal portable terminal according to the first embodiment of the present invention.

4 is a cross-sectional view of a personal portable terminal according to the first embodiment of the present invention.

5 is a front view of the pad body according to the first embodiment of the present invention.

6 is a front view of another pad body according to the first embodiment of the present invention.

7 is a cross-sectional view of a personal portable terminal according to the first embodiment of the present invention.

8 is a cross-sectional view of another personal portable terminal according to the first embodiment of the present invention.

9 is a cross-sectional view of another personal portable terminal according to the first embodiment of the present invention.

10 is a cross-sectional view of another personal portable terminal according to the first embodiment of the present invention.

11 is a cross-sectional view of another personal portable terminal according to the first embodiment of the present invention.

12 is a cross-sectional view of another personal portable terminal according to the first embodiment of the present invention.

13 is an exploded perspective view of a personal portable terminal according to a second embodiment of the present invention.

14 is a cross-sectional view of another personal portable terminal according to the second embodiment of the present invention.

15 is a cross-sectional view of another personal portable terminal according to a second embodiment of the present invention.

16 is another cross-sectional view of a personal portable terminal according to a second embodiment of the present invention.

17 is another cross-sectional view of a personal portable terminal according to a second embodiment of the present invention.

18 is another cross-sectional view of a personal portable terminal according to a second embodiment of the present invention.

19 is an exploded perspective view of a personal portable terminal according to a third embodiment of the present invention.

20 is a cross-sectional view of a personal portable terminal according to a third embodiment of the present invention.

21 is a cross-sectional view of a personal portable terminal according to a fourth embodiment of the present invention.

22 is a cross-sectional view according to a fourth embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

212: Front case

214: Rear case 222: Button hole

224: Cantilever button part 227: The pad body

230: Push sensor part 232: Dome switch

The present invention relates to a key input unit of a personal portable terminal, and more particularly, to an integrated front case and a personal portable terminal that can facilitate manufacturing and assembly and can be reduced in thickness.

In a personal mobile device such as a mobile phone, a key input unit uses a button to input a number. As a technology related to a mobile phone is developed, in addition to inputting a phone number to a key input unit, a character for delivering a message may be input using a key input unit, and a game function or various functions may be implemented. This trend can be applied not only to mobile phones but also to general personal mobile devices such as other electronic devices.

1 is an exploded perspective view illustrating a key input unit in a conventional mobile phone.

Referring to FIG. 1, in a conventional mobile phone 1, a key input unit includes a keypad 10 having a button 12 formed thereon, an adhesive sheet 20 having a dome switch 22 formed therein, and a circular electrode 32 formed therein. It includes a printed circuit board (PCB) substrate 30.

The keypad 10 is made of rubber, silicone, or synthetic resin, and the button 12 of the mobile phone is integrally formed with the keypad 10 through injection molding on the upper surface of the keypad 10. In the keypad 10, the buttons 12 protrude from the upper surface, and the protruding buttons 12 may be exposed through the holes 4 formed in the upper case 2 of the mobile phone.

The lower portion of the keypad 10 is provided with an adhesive sheet 20 including a dome switch 22. The dome switch 22 is formed of a metal material, and when pressed as a dome (dome) type of switch, the electrode 32 can be electrically connected while being pressed flat. When the pressing force is removed, the dome switch 22 returns to its original state again. Can be removed again. The dome switch 22 may be formed directly on the adhesive sheet 30. However, since the dome switch 22 is generally formed of another material, the dome switch 22 may be attached to each other using an adhesive or the like.

The PCB substrate 30 includes a circular electrode 32, which is located at the bottom corresponding to the position of the button 12 and the dome switch 22. Specifically, the electrode 32 has a concentric circular structure and has a structure electrically connected by the dome switch 22.

As described above, the keypad 10 is located under the upper case 2, and the button 12 is disposed to be exposed or protruded to the outside through the hole 4 of the upper case 2. In order to form the key fitting portion, the upper case 2 and the key pad 10 must be overlapped with each other, so the thickness of the key input portion is inevitably thickened.

In addition, a hole 4 must be formed in the upper case 2, and the button 12 must be positioned to correspond to each hole 4. Therefore, fabrication through assembly is complicated and product defects often occur in the process of assembling the key input unit.

2 is a cross-sectional view illustrating a conventional key input unit.

Referring to FIG. 2, a button 12 of a mobile phone is formed on a keypad 10, and a gap support 16 and a pressing protrusion 14 are formed on the bottom of the keypad 10 to face downward. have.

Therefore, when the user presses the button 12, the push protrusion 14 presses the dome switch 22, and the dome switch 22 is deformed to connect the electrode 32 positioned below the dome switch 22. As the electrode 32 is connected, it is possible to check whether the button 12 is pressed, and a signal generated from the electrode 32 may be transmitted to an internal circuit for input of numbers or letters. Since the area of the button 12 is much larger than the area of the pressing protrusion 14, the force for pressing the button 12 can be collected and transmitted to the pressing protrusion 14, and the dome switch 22 can be easily operated with a small force. Can be pressed.

An object of the present invention is to manufacture the cantilever button unit and the front case integrally, easy to manufacture, can reduce the number of manufacturing process, thereby reducing the incidence of product defects and lower the manufacturing cost To provide.

Another object of the present invention is to provide a personal hand-held terminal which minimizes the thickness of the manufacturing key input unit by manufacturing a button portion thinner than the conventional key input unit.

It is still another object of the present invention to provide a front case and a personal portable device that can easily express various designs and colors, thereby providing excellent quality as a product.

In connection with the above-described objects of the present invention, the personal portable terminal of the present invention includes a front case including a pad body in which a button hole is formed and a cantilever button unit mounted to the button hole, and a number on the bottom of the front case. Alternatively, a key input sensor unit for detecting a text input is provided.

The front case is provided with a pad body in which the cantilever button portion is formed integrally. The button portion is formed in a cantilever shape in which one surface is connected and the other surface is separated, and the button portion can repeat deformation and restoration in response to a user's pressing.

The conventional key input unit includes a rubber key pad and a button protruding from the keypad, and the buttons are required to have a predetermined thickness or more by being covered by a mobile phone case provided with a hole. Therefore, it becomes a factor that hinders the slimming of personal mobile terminals.

However, the integrated front case including the cantilever button unit of the present invention can simultaneously serve as a key input unit and a conventional mobile phone case, and can be made thinner than a conventional key input unit because it is formed as a single wall. Therefore, the number of components can be reduced, and the thickness of the terminal can be significantly reduced.

In addition, the present invention is provided with a pressing protrusion corresponding to the dome switch of the pressing sensor portion on the bottom surface of the cantilever button portion to which one surface is connected from the pad body, so that the pressing protrusion is a dome when the cantilever button portion is pressed downward by an external force of the user. The switch is pressed and electrically connected to the circular electrode of the PCB substrate located at the bottom corresponding to the position of the dome switch.

The pressing protrusion may be provided at the bottom of the cantilever button of the front case, but may be included in the rubber pad provided at the bottom of the pad body. The rubber pad complements the elastic force of the cantilever button part and implements various colors through printing, etc., and protrudes through the button hole spaced apart from the cantilever button part and the pad body from the outside, that is, foreign matter enters through the button hole. Can be prevented.

In addition, in the present invention, in order to improve the user's feel and prevent the permanent deformation of the button portion, the cantilever button portion and the dome switch are manufactured in contact with each other, or the cantilever button portion is connected to one side of the pad body. It is also possible to provide an elastic adjustment groove or elastic adjustment bend for adjustment.

In addition, in the present invention, the cantilever button part is manufactured integrally with the front case of the personal portable terminal by an injection process, and the front case is combined with the rear case to form a body case. The main body case of the personal portable terminal typically refers to an outer portion surrounding the electronic components of the wireless communication terminal, and is usually made of a plastic material such as ABS resin or PC resin.

In addition, the main body case of the personal portable terminal is manufactured in several parts, such as the front case to which the cantilever button unit is mounted, the rear case to which the battery is mounted, and the part to which the display unit is mounted, and the cantilever is mounted at any position of the main case of the personal portable terminal. Key input sensor unit for generating an electric signal by inputting letters and numbers through the button unit.

Typically, a specific part of the main body case in which the key button-integrated main body case is manufactured is preferably manufactured in the front case in which the keypad is mounted in the conventional manner, and the plastic outer part capable of simultaneously performing the button function and the case function. desirable.

In addition, the function of such a case is preserved even when the plastic exterior is coated.

In the present specification, a personal portable device (Personal Portable Device) refers to a portable electric and electronic device such as a PDA (Personal Digital Assistant), a smart phone, a handheld PC, a mobile phone, an MP3 player, and the like. A predetermined communication module such as a Division Multiplexing Access module, a Bluetooth module, an infrared communication module (IrDA), a wired / wireless LAN card, etc., and a terminal having a predetermined computing power by mounting a predetermined microprocessor for performing a multimedia playback function Can be used as a generic concept. In addition, in addition to the structure consisting of the dome switch and the electrode, the key input sensor unit may be selected according to the applied technology level, the key input sensor unit of various structures, it can be changed to suit the terminal.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments.

Example 1

3 is an exploded perspective view of a personal portable terminal according to the first embodiment of the present invention.

Referring to FIG. 3, the personal mobile terminal 200 includes a front case 212, a rear case 214, and a key input sensor unit 230.

The terminal body may include a case including internal terminal functions, internal and external components, and a circuit configuration. For example, in the case of a mobile phone, the terminal body may include a terminal case, a key input unit, a display module, a wireless transmission / reception module, a battery, a microphone and a receiver. In addition, although the terminal body 210 of FIG. 3 has a bar shape, according to another embodiment of the present invention, the terminal body is formed in various types of styles such as a flip type, a folding type, a slide type, a swing type, and the like. Can be.

The terminal body includes a front case 212 and a rear case 214, and a pad body 227 having a cantilever button part 224 is integrally provided on the front of the front case 212.

The key input sensor unit 230 is provided inside the pad body 227. The pad body 227 may form a front part of the front case 212 and may provide a key input unit which is integrally injected with the front case 212 to form a single wall, and together with the key input unit, provide a wall surface of a personal portable terminal. You can do it.

The front case 212 includes a pad body 227 including a button hole 222 and a cantilever button part 224. Since the pad body 227 acts as a case with a single plastic layer, the wall surface of the personal mobile terminal can maintain a thin thickness and can easily complete the assembly. Can be significantly lowered.

Figure 4 is a cross-sectional view of a personal portable terminal for explaining the pressing projection of the cantilever button unit according to the first embodiment of the present invention.

Referring to FIG. 4, the cantilever button portion 324 mounted to the pad body includes a pressing protrusion 331 on a bottom surface thereof.

The push protrusion 331 corresponding to the dome switch 332 of the push sensor unit provided on the bottom surface of the cantilever button unit 324 to which one surface is connected from the pad body of the front case is provided by the cantilever button unit 324 by an external force of the user. When pressed downwards, the pressing protrusion 331 presses the dome switch 332 and is electrically connected to a circular electrode of a PCB substrate positioned below the corresponding dome switch 332.

The pressing protrusion 331 may be provided on the bottom of the cantilever button part 324 but may be included in the rubber pad provided on the bottom of the pad body.

5 is a plan view of a pad body according to a first embodiment of the present invention.

6 is a plan view of another pad body according to the first embodiment of the present invention.

5 and 6, the cantilever button units 424a and 424b are connected to one surface of the pad bodies 427a and 427b, and the other side thereof is spaced apart from the pad bodies 427a and 427b. When the cantilever button portions 424a and 424b are subjected to an external force by the connecting portions of the cantilever button portions 424a and 424b and the pad bodies 427a and 427b, the connecting portions are deformed and the cantilever button portions 424a and 424b are pressed down. When the external force is removed, the cantilever button units 424a and 424b may return to their original positions.

In the present invention, the button holes 422a, 422b defining the cantilever button portions 424a, 424b are formed on the front surfaces of the pad bodies 427a, 427b, and one surface of each cantilever button portion 424a, 424b has a pad body ( 427a, 427b, and the other side is spaced apart from the pad body 427a, 427b by the button holes 422a, 422b. Such a structure is called a cantilever structure, which will be described in more detail as follows.

The cantilever button portions 424a and 424b have elasticity and resilience by one surface connected to the pad bodies 427a and 427b of the personal portable terminal, and the plastic material and the cantilever button portion 424a, which are used as materials of the personal portable terminal. The cantilever button portions 424a and 424b may have a constant elastic force according to one surface that is connected to the 424b and the pad bodies 427a and 427b, that is, the thickness, shape, and width of the connecting portion.

5 and 6, in FIG. 5, a line-shaped elastic adjustment hole 425a is formed in order to adjust elasticity at the connection portion between the cantilever button part 424a and the pad body 427a.

In Figure 6, in order to adjust the elastic force of the cantilever button portion 424b is provided with an elastic control hole (425b) of the "c" shape. The shape of the elastic adjustment hole 425b may be formed such that the connection surface between the pad body 427a and the cantilever button part 424b is rounded in addition to the line or the "c" shape. Therefore, the cantilever button portion 424b can be provided in various ways within the range that can maintain the elastic force by the connecting portion with the pad body 427b to maintain the function of the cantilever button portion 424b.

7 is a cross-sectional view of a personal portable terminal according to the first embodiment of the present invention.

8 is a cross-sectional view of a similar personal portable terminal according to the first embodiment of the present invention.

7 and 8, in FIG. 7, a line-shaped elastic adjustment groove 526a is provided at a connection portion between the cantilever button part 524a and the pad body 527a. The line-shaped elastic adjustment groove 526a becomes a flow boundary line of the cantilever button portion 524a mounted to the pad body 527a when the cantilever button portion 524a flows up and down by an external force of the user. 527a may serve to prevent flow of the cantilever button unit 524a as a whole.

In addition, when the cantilever button portion 524a flows up and down by an external force of the user, the cantilever button portion in order to prevent the connection between the cantilever button portion 524a and the pad body 527a from being permanently deformed due to excessive deformation. The push protrusion 531a of 524a and the dome switch 532a of the push sensor portion corresponding to the cantilever button portion 524a are provided to abut.

In addition, the cantilever button portion 524a as the other means for preventing the cantilever button portion 524a formed on the pad body 527a formed of a plastic material from being returned to its original state when the external force is removed by the user. The surface of the pad body 527a facing the connecting surface of the pad body 527a is formed above the pad body 527a.

Fig. 8 is a connection surface with the pad body 527b of the cantilever button portion 524b as another means for preventing the cantilever button portion 524b from being returned to its original state when the external force by the user is removed. The operating surface of FIG. 7 except that the surface facing the pad body 527b is placed in parallel with the pad body 527b and the dome switch 532b corresponding to the cantilever button portion 524b is in contact with the pad body 527b. Same as

9 is a cross-sectional view of a personal portable terminal according to the first embodiment of the present invention.

10 is a cross-sectional view of a similar personal portable terminal according to the first embodiment of the present invention.

9 and 10, FIG. 9 provides a bent portion on one surface connected to the cantilever button portion 524c and the pad body 527c to provide an elastic adjustment curved surface 526c. The elastic adjustment curved surface 526c becomes a flow boundary curved surface of the cantilever button portion 524c mounted on the pad body 527c when the cantilever button portion 524c flows up and down by an external force of the user. 527c) may serve to prevent flow as a whole.

In addition, when the cantilever button portion 524c flows up and down by an external force of the user, the cantilever button portion in order to prevent the connection between the cantilever button portion 524c and the pad body 527c from being permanently deformed due to excessive deformation. The push protrusion 531c of the 524c and the dome switch 532c corresponding to the push sensor part corresponding to the cantilever button part 524c come into contact with each other, and the connection part between the cantilever button part 524c and the pad body 527c is elastic. The adjustment curved surface 526c is formed and serves as a flow boundary so that the pad body 527c does not flow as a whole.

In addition, the cantilever button portion 524c formed on the pad body 527c formed of a plastic material is another means for preventing the cantilever button portion 524c from being returned to its original state when the external force is removed by the user. The surface facing the connection surface of the pad body 527c of 524c is formed to be above the pad body 527c.

Fig. 10 is a connection surface with the pad body 527d of the cantilever button portion 524d as another means for preventing the cantilever button portion 524d from being returned to its original state when the external force by the user is removed. The surface facing the pad body 527d is parallel to the operation principle of FIG. 9 except that the dome switch 532d of the push sensor portion corresponding to the cantilever button portion 524d is installed to abut. .

11 is a cross-sectional view of a personal portable terminal for explaining the shape of the cantilever button portion mounted in the button hole of the pad body according to the first embodiment of the present invention.

12 is a cross-sectional view of a personal portable terminal for explaining the shape of another cantilever button unit according to the first embodiment of the present invention.

11 and 12, the cantilever button part 624a and the dome switch 632a mounted in the button hole of the pad body are included in FIG. 11. The cantilever button part 624a formed in the pad body is manufactured integrally by an injection process. The other side of the other surface except for one surface of the cantilever button portion 624a connected to the button hole is formed to be inclined, so that the gap between the pad body 627a adjacent to the periphery of the other cantilever button portion 624a is spaced at a lower end thereof. It is formed to be narrower, and thus it is possible to prevent foreign substances from flowing into the inside of the personal mobile terminal from the outside.

12 includes a cantilever button portion 624b and a dome switch 632b mounted in the button hole of the pad body. The cantilever button portion 624b mounted on the pad body is manufactured integrally by an injection process. The other side of the other surface except for one surface of the cantilever button portion 624b connected to the button hole is formed in a stage, and covers a portion of the pad body 627b or another cantilever button portion adjacent to the periphery to the inside of the personal mobile terminal. Foreign material can be prevented from entering.

Referring to FIGS. 11 and 12 again, in FIGS. 11 and 12, the space between the cantilever button units 624a and 624b is formed to be narrower than the space between the lower ends of the cantilever button unit when the front of the personal portable terminal is viewed from above. 624a, 624b) and the spacing distance between the pad body is minimized, and thus it is possible to prevent foreign matter from flowing into the inside of the personal mobile terminal from the outside.

Example 2

13 is an exploded perspective view of a personal portable terminal according to a second embodiment of the present invention.

Referring to FIG. 13, the personal mobile terminal 700 according to the second embodiment includes a front case 712, a rear case 714, a rubber pad 750, and a key input sensor unit 730.

In the personal portable terminal according to the second embodiment, the front case 712, the rear case 714, and the key input sensor unit 730 are the front case 212, the rear case 214, and the key input of the first embodiment. It is substantially the same as the sensor unit 230. Therefore, the descriptions of the front case 712, the rear case 714, and the key input sensor 730 in the second embodiment will be described with respect to the terminal body 210 and the key input sensor 230 in the first embodiment. And drawings, and repeated content may be omitted.

However, in the second embodiment of the present invention, the elastic force of the cantilever button part 724 is complemented, and a protruding part is formed to prevent the inflow of foreign substances from the outside by the gap between the cantilever button part 724 and the pad body 727. In addition, a rubber pad 750 may be provided to protect the cantilever button part 727.

The rubber pad 750 may be formed of a plastic film of an organic polymer type such as ABS (Acrylonitrile, Butadiene, Styrene) or PE (PolyEthylene) or PET or acrylic film, or may be formed using a rubber film. The rubber pad 750 has a thickness of about 0.5 mm to 1 mm and may be formed through plastic injection.

The rubber pad 750 is formed on the bottom of the pad main body 727. Therefore, the cantilever button portion 724 may be supported by its own elastic force, but due to the rubber pad 750 formed on the bottom surface of the pad body 727, the inherent elasticity of the plastic may be used, and the protrusion formed on the rubber pad 750 may be used. Can prevent the cantilever button portion 724 from being excessively deformed. More specifically, by covering the upper surface of the cantilever button portion 724, it is possible to prevent some of the cantilever button portion 724 from bending upward. In addition, the gap between the cantilever button part 724 and the pad body 727 may prevent the inflow of foreign substances from the outside.

14 is a cross-sectional view of a personal portable terminal for explaining the rubber pad according to the second embodiment.

Referring to FIG. 14, the personal mobile terminal includes a cantilever button unit 724a and a rubber pad 750a. The cantilever button portion 724a includes a push protrusion 731a for pressing the dome switch 732a of the push sensor, and the rubber pad 750a placed on the bottom thereof is a push protrusion for the push protrusion 731a to pass through. It contains a hall. Therefore, when the user presses the cantilever button portion 724a, the pressing protrusion 731a passes through the pressing protrusion hole formed in the rubber pad 750a and presses the dome switch 732a, and the dome switch 732a is deformed and the dome switch 732a can be connected to the contact of the push sensor located below. As it is connected to the contact portion, it is possible to check whether the cantilever button portion 724a is pressed, and a signal generated from the contact portion may be transmitted to an internal circuit for inputting a number or a letter.

15 is a cross-sectional view of a personal portable terminal for explaining the rubber pad according to the second embodiment.

Referring to FIG. 15, the personal mobile terminal includes a cantilever button unit 724b and a rubber pad 750b. 14, except that the rubber pad 750b placed on the bottom of the cantilever button portion 724b includes a pressing protrusion 731b, the role and operation principle are the same as those described in FIG. .

16 is a cross-sectional view of a personal portable terminal for explaining the protrusion formed on the rubber pad.

Referring to FIG. 16, a rubber pad 850a including a spaced portion and a protrusion 870a formed between the pad body 827a and the cantilever button portion 824a is illustrated.

The rubber pad 850a formed on the bottom surface of the pad body 810a may compensate for the elasticity of the cantilever button portion 824a, and the protrusion 870a formed on the rubber pad 850a may partially support the cantilever button portion 824a by an external force. Excessive deformation can be prevented. In addition, the gap between the cantilever button part 824a and the pad body 827a may prevent foreign matter from flowing in from the outside.

17 is a cross-sectional view of a personal portable terminal for explaining the protrusion formed on the rubber pad.

Referring to FIG. 17, the rubber pad 850b is formed with a protrusion 870b protruding along the outer shape of the cantilever button part 827b from a surface facing the pad body 827b, and the protrusion 870b is A portion of the cantilever button portion 824b may be prevented from being bent upward by partially exposing through the spaced portion around the cantilever button portion 824b to cover the top surface of the cantilever button portion 824b. In addition, the gap between the cantilever button portion 824b and the pad body 827b may prevent foreign substances from flowing in from the outside.

18 is a cross-sectional view of a personal portable terminal for explaining the protrusion formed on the rubber pad 850c.

Referring to FIG. 18, the rubber pad 850c is formed with a protrusion 870c protruding along the outline of the cantilever button portion 850c, and the protrusion 870c is spaced apart from the periphery of the cantilever button portion 850c. Partially exposed. However, unlike the protruding portion 870b of FIG. 17, the protruding portion 870c of the rubber pad 850c is formed at an end or an inclined surface on the cantilever button portion 850c or the pad main body 827c so that the protruding portion 870c and the pad main body 827c. ) The upper surface of) is formed at the same height.

In addition, by covering the upper surface of the cantilever button portion 824c to prevent a portion of the cantilever button portion 824c to be bent upwards, foreign matter that can enter into the gap between the cantilever button portion 824c and the pad body 827c. Can prevent the inflow of

Example 3

19 is an exploded perspective view of a personal portable terminal for explaining the third embodiment of the present invention.

Referring to FIG. 19, the personal portable terminal 900 according to the third embodiment includes a front cover 912, a rear case 914, and a cover sheet 970 and a key input sensor unit 930 that cover spaced apart portions. ) Is shown.

In the personal mobile terminal according to the third embodiment, the front case 912, the rear case 914, and the key input sensor unit 930 are the front case 212, the rear case 214, and the key input of the first embodiment. It is substantially the same as the sensor unit 230. Therefore, descriptions of the front case 912, the rear case 914, and the key input sensor unit 930 in the third embodiment will be described with reference to the front case 212, the rear case 214, and the key input of the first embodiment. Reference may be made to the description of the sensor unit 230 and the drawings, and the repeated content may be omitted.

However, in the third embodiment of the present invention, unlike the first embodiment, the cover sheet 970 may be included, and the cover sheet 970 protects the cantilever button portion 924 and the cantilever button portion 924 and the pad. A gap between the main body 927 and the main body 927 may prevent the inflow of foreign substances from the outside.

20 is a cross-sectional view of a personal portable terminal according to a third embodiment of the present invention.

19 and 20, a portion of the pad body 927 and the cover sheet 970 of the personal mobile terminal 900 are shown. The pad body 927 forms a fixing groove 928 indented from an upper surface to fix the cover sheet 970, and covers a spaced portion of the fixing groove 928 and the cantilever button part 924. Sheet 970 is provided. The cover sheet 970 also includes a protruding hole 972 to protrude the cantilever button portion 924 outward.

Example 4

FIG. 21 is an exploded perspective view of a personal portable terminal for explaining a fourth embodiment of the present invention, and FIG. 22 is a cross-sectional view of a pad body having a coating film formed thereon.

21 and 22, the personal portable terminal 1000 according to the fourth embodiment includes a front case 1012, a rear case 1014, a coating film 1028 and a key input sensor unit 1030 on the pad body. Is shown.

In the personal portable terminal according to the fourth embodiment, the front case 1012, the rear case 1014, the pad body 1100, and the key input sensor unit 1030 are the front case 712 and the rear case of the second embodiment. 714, the rubber pad 750, and the key input sensor unit 730 are substantially the same. Therefore, descriptions of the front case 1012, the rear case 1014, and the key input sensor unit 1030 in the fourth embodiment are described in the front case 712, the rear case 714, and the rubber pad 750 of the second embodiment. ) And the description of the key input sensor unit 730 and the drawings, and repeated content may be omitted.

However, in the fourth embodiment of the present invention, the spray coating film 1028 is formed on the front case 1012 of the personal mobile terminal 1000 to express various colors, letters and numbers.

delete

Referring to FIG. 22, the spray coating film 1028 is luxurious and its surface treatment is smooth, so it is excellent in coating quality. However, the spray coating film 1028 has a disadvantage in that it is impossible to implement various colors because it can only spray coating one color to one product.

Therefore, in the present exemplary embodiment, the bottom surface of the rubber pad 1050 may be multicolored printed, and the top surface of the pad body 1100 may be spray coated to form a spray coating film 1028. In the state in which the spray coating film 1028 is formed, a process of peeling off the numbers or letters or other portions requiring decoration by laser may be applied.

Referring to FIG. 22 again, various colors may be expressed by printing according to a predetermined design on the lower portion of the rubber pad 1050 formed of PC, PET, urethane, etc., and the distribution of these colors may be about the cantilever button unit ( 1024) can be used as the color represented.

The spray coating film 1028 is formed on the upper surface of the pad main body on which the cantilever button part 1024 existing on the upper surface of the rubber pad 1050 which is printed is mounted using spray coating. Here, the spray coating film may use a single color, and may be formed on the entire upper surface of the pad body.

After forming the spray coating film 1028, it is possible to remove a portion having a certain number or letters using a laser or the like. This process provides a spray coating pattern in which numbers or letters are represented. The method of engraving numbers or letters by laser marking is a method commonly used when manufacturing an existing keypad, and the marking method itself is obvious to those skilled in the art.

The personal portable terminal of the present invention can provide a front case integrated with a cantilever button unit to reduce the thickness of the key input unit, and solve the problem that the thickness becomes thin by providing a rubber pad on the bottom of the pad body made of plastic. Can be.

In addition, the cantilever button unit is formed integrally with the case body without mounting a separate keypad in the wireless communication terminal, thereby reducing the size of the personal portable terminal and efficiently utilizing the internal space of the personal portable terminal.

In addition, the present invention, because the button can be manufactured together in the main body of the wireless communication terminal by a single injection process can reduce the cost compared to the production of the keypad by a separate process, thereby reducing the unit cost of the wireless communication terminal product It is effective.

In addition, it is easy to express various designs and colors using spray coating rather than injection molding.

As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

Claims (24)

A front case including a pad body having at least one button hole formed therein, and a plurality of cantilever button portions of which one surface is connected to the pad body and the other surface of the button hole is separated from the pad body to be pressed; A rear case corresponding to the front case; And A key input sensor unit positioned below the pad body and including a push sensor generating an input signal in response to the movement of the cantilever button unit; A personal mobile terminal having a. The method of claim 1, Personal portable terminal, characterized in that the pressing projection is formed on the bottom surface of the cantilever button. The method of claim 1, Personal portable terminal, characterized in that the elastic adjustment hole is provided on one surface of the cantilever button portion connected to the pad body. The method of claim 1, Personal portable terminal, characterized in that the elastic adjustment groove is provided in a line shape on one surface of the cantilever button portion connected to the pad body. The method of claim 1, The mobile terminal characterized in that the elastic adjustment groove provided on one surface of the cantilever button portion connected to the pad body is provided to be bent upward from the pad body when the button portion does not have an external force. The method of claim 1, And an elastic adjustment groove provided on one surface of the cantilever button part connected to the button hole, and the cantilever button part is provided in parallel in the pad body when there is no external force. The method of claim 1, Personal portable terminal, characterized in that the bent portion is provided on one surface of the cantilever button portion connected to the button hole. The method of claim 1, One surface of the cantilever button portion connected to the button hole is provided as a curved portion bent so that the cantilever button portion is bent upward from the pad body when there is no external force. The method of claim 1, And a bent part provided on one surface of the cantilever button part connected to the button hole, and wherein the button part is provided in parallel with the pad body when there is no external force. The method of claim 1, A side surface of the other surface except for one surface of the cantilever button portion connected to the button hole is formed to be short or inclined, so that an interval between the pad body adjacent to the periphery or another cantilever button portion is spaced apart from the bottom of the bottom portion Personal handset. The method of claim 1, The other side except for one surface of the cantilever button unit connected to the button hole is formed to protrude above the pad body, to cover the separation interval with the pad body. The method of claim 1, The bottom surface of the cantilever button portion is integrally formed with a pressing projection, a lower portion of the pad body is provided with a rubber pad, the rubber pad comprises a hole formed in a point corresponding to the pressing projection. . The method of claim 1, A rubber pad is provided below the pad body, and the rubber pad includes a push protrusion formed on a bottom surface of the cantilever button unit. The method of claim 1, A rubber pad is provided below the pad body, and the rubber pad includes a protrusion that protrudes along an outer shape of the cantilever button portion from a surface facing the pad body, and the protrusion is spaced apart around the cantilever button portion. Personal mobile terminal, characterized in that partially exposed through. The method of claim 14, The protruding portion partially covers the upper surface of the cantilever button unit. The method of claim 15, The protruding portion includes a cover surface protruding toward the cantilever button portion, and the cantilever button portion includes a cover surface groove partially indented to receive the cover surface, and the cover surface is accommodated in the cantilever button portion and the Personal mobile terminal, characterized in that the upper surface of the cover and the upper surface of the button unit coincides The method of claim 1, The push sensor may include a dome switch located below the button unit and a contact unit located below the dome switch. The method of claim 1, A cover sheet is provided on an upper surface of the pad body, and the cover sheet includes a protruding hole for passing the cantilever button part. The method of claim 18, The pad body includes a fixing groove formed along the outer periphery of the cover sheet to fix the cover sheet, wherein the cover sheet covers the spaced apart portion of the fixing groove and the cantilever button unit. . delete In the front case of a personal mobile terminal, And a pad body having at least one button hole formed therein, and a plurality of cantilever button portions having one surface connected to the pad body and the other surface separated from the pad body in the button hole. The method of claim 21, The front case characterized in that the pressing projection is formed on the bottom surface of the cantilever button. The method of claim 21, The front case, characterized in that a rubber pad is provided below the pad body. The method of claim 21, And a cover sheet including a protruding hole for protruding the cantilever button part on an upper surface of the pad body.

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