KR20140045818A - Mobile terminal - Google Patents

Abstract

The present invention includes a rib provided inside the terminal body and extending in one direction, a protrusion disposed spaced apart from the rib at a predetermined interval, and supported on an inner wall of the rib facing the protrusion and spaced apart from each other. A key top having a first and second dome switches disposed therein, a hollow portion accommodating the ribs, and having one side supported by the protrusion so as to be tiltable with the protrusion as a rotation axis, and defining the hollow portion Protrudes from the inner side of the key top corresponding to the first and second dome switches, respectively, and when one end of the key top is tilted to press the dome switch disposed adjacent to the other end of the key top of the first and second dome switches. It provides a mobile terminal comprising a first and a second pressing unit is formed.

Description

[0001] MOBILE TERMINAL [0002]

The present invention relates to a mobile terminal having an input device.

A mobile terminal is a portable electronic device that is portable and has one or more functions of voice and video call function, information input / output function, and data storage function.

As the function of the mobile terminal becomes diversified, it is implemented as a multimedia player having various functions such as memo creation, E-mail reception / dispatch, and schedule management.

The mobile terminal is provided with an input device for performing the various functions and inputting information. The input device is implemented in various forms such as a dome switch, a touch pad, a touch screen, and a jog wheel.

The input device using the dome switch is a method of inputting information by pressing, and is applied to a keypad having a QWERTY keyboard, a home key, a side key for volume control, and the like. In the case of an input device configured to generate different control commands depending on the position of pressing operation such as a side key, a switch that is pressed and a switch adjacent thereto may be pressed to cause a malfunction. Therefore, it may be considered to improve the structural part of the input device to improve this.

The present invention is to provide a mobile terminal capable of inputting more accurate information in the input device for generating different control commands according to the position of the push operation, to prevent malfunction.

Mobile terminal according to an embodiment of the present invention for realizing the above object, a rib provided in the inside of the terminal body and formed to extend in one direction, the protrusions spaced apart from the rib at a predetermined interval, and The first and second dome switches are supported on the inner wall of the rib facing the protrusion and spaced apart from each other, and a hollow portion for receiving the rib, and one side is supported on the protrusion to tilt the protrusion as a rotation axis ( a key top formed to be tiltable) and protrude from the inner surface of the key top defining the hollow portion to correspond to the first and second dome switches, respectively, and when one end of the key top is tilted, among the first and second dome switches. And first and second pressing parts formed to press the dome switch disposed adjacent to the other end of the key top.

According to an example related to the present invention, a dome switch adjacent to one end of the key top of the first and second dome switches is formed to generate a control signal when the other end of the key top is tilted.

According to another embodiment related to the present invention, the protrusion is formed in a cylindrical shape, the key top is rotated and tilted while the one side is in contact with the outer peripheral surface of the protrusion.

According to another example related to the present invention, the protrusion is formed in the shape of a cylinder, the key top is formed with a receiving groove formed so that the at least part of the protrusion is rotatable.

According to another example related to the present invention, the mobile terminal further includes a support member coupled to a case forming an exterior of the terminal body to support a circuit board and having the rib and the protrusion.

According to another example related to the present invention, the protrusion may be a boss formed to support the internal parts of the terminal body. In this case, a screw line may be formed on the inner surface of the protrusion so that the fastening member may be screwed.

According to another example related to the present invention, the mobile terminal may include a third dome switch supported on an outer wall of the rib and disposed between the first dome switch and the second dome switch, and an inner side of the key top. When the central portion of the key top is projected to correspond to the third dome switch is pressed, the key top is further supported by the protrusion portion and the center portion is elastically deformed further comprises a third pressing portion formed to press the third dome switch.

As an example related to this, the first and second dome switches may be formed to receive control commands that are opposite to each other, and the third dome switch may be formed to receive a control command for a hot key.

As another example of this, the third dome switch may be disposed to correspond to the protrusion in the thickness direction of the key top.

As another example related to this, grooves recessed toward the outer surface may be formed at both ends of the inner surface of the key top where the third dome switch is formed to facilitate the elastic deformation.

The key top includes a first body having a hollow shape, and a second body formed of a heterogeneous material with the first body and protruding from an inner side surface of the first body to define the groove and having the third pressing part. can do. In this case, the first and second bodies may be integrally formed by double injection.

As another example of this, the mobile terminal further includes a flexible circuit board electrically connected to a circuit board provided in the terminal body and having the first to third dome switches. And a first support part having the first and second dome switches and supported on the inner wall of the rib, and a second support part extending from the first support part to be supported on the outer wall of the rib and having the third dome switch. It includes.

In this case, the flexible printed circuit board may further include a fixing hole formed to accommodate the protrusion to fix the position of the flexible printed circuit board.

In addition, in order to realize the above object, the mobile terminal according to another embodiment of the present invention, the key top is provided on the terminal body and both ends are tiltable (tilting) and having a hollow portion, and the hollow portion defining the A first dome switch and a first protruding portion protruding from an inner side surface of the key top and spaced apart from each other, and a first dome switch and a second accommodating portion accommodated in the hollow portion and corresponding to the first and second pressing portions, respectively; And a two dome switch, and when one end of the key top is tilted, the first or second dome switch is configured to press the first or second dome switch corresponding to the pressing part disposed adjacent to the other end of the key top.

In addition, the mobile terminal according to another embodiment of the present invention for realizing the above object is provided in the interior of the terminal body and is formed to extend in one direction, spaced apart from the inner wall of the rib at a predetermined interval A key top having a protrusion disposed on the outer wall, a dome switch supported on an outer wall of the rib, and a hollow portion accommodating the rib, and having one side supported by the protrusion to be tiltable with the protrusion as a rotation axis; The inner side of the key top defining the hollow portion protrudes corresponding to the dome switch, and when the central portion of the key top is pressed, the key top is supported to the protrusion and is formed to press the dome switch by elastically deforming the central portion. Contains wealth.

According to the present invention having the above-described configuration, when one end of the key top is pressed, the key top is tilted with the protrusion as the rotation axis to press the dome switch corresponding to the pressing part disposed adjacent to the other end of the key top, and the center portion of the key top. When the key is pressed, the key top is supported by the protrusion, and the center portion is elastically deformed toward the hollow portion to press the dome switch corresponding to the pressing portion disposed in the center portion, thereby preventing a malfunction in which adjacent switches are pressed together.

In addition, when the dome switch corresponding to the central portion of the key top is configured to receive a control command for a shortcut key, at least two functions may function as a hybrid input device in which one is combined. Therefore, the material cost can be reduced due to the reduced number of input devices, and a mobile terminal having a simpler structure can be implemented.

1 is a perspective view of an example of a mobile terminal according to the present invention.
FIG. 2 is a rear perspective view of the mobile terminal shown in FIG. 1. FIG.
3 is an exploded perspective view of the mobile terminal of FIG.
4 is a conceptual diagram illustrating an input device shown in FIG. 3.
5 is an exploded perspective view of the input device of FIG.
6A through 6D are conceptual views illustrating examples of operations of the input apparatus illustrated in FIG. 4.
7 and 8 are conceptual views illustrating modifications of the input device of FIG. 4.

Hereinafter, a mobile terminal according to the present invention will be described in detail with reference to the drawings.

In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. In addition, the suffix "module" and " part "for constituent elements used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The mobile terminal described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), an e-book, Navigation and the like may be included. However, it will be readily apparent to those skilled in the art that the configuration according to the embodiments described herein may also be applied to fixed terminals such as digital TVs, desktop computers, etc., except when applicable only to mobile terminals.

1 is a perspective view of an example of a mobile terminal 100 according to the present invention.

The disclosed mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto and can be applied to various structures such as a watch type, a clip type, a spectacle type, or a folder type, a flip type, a slide type, a swing type and a swivel type in which two or more bodies are movably coupled have.

The terminal body includes a case (frame, housing, cover, etc.) forming an appearance. In this embodiment, the case may be divided into a front case 101 and a rear case 102. [ A variety of electronic components are embedded in the space formed between the front case 101 and the rear case 102. The cover 103 may be coupled to the front or rear cases 101 and 102 to form the rear surface of the mobile terminal 100. [

The cases may be formed by injection molding of a synthetic resin or may be formed of a metal material such as stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

The display unit 150, the proximity sensor 141, the illuminance sensor 142, the first sound output unit 160, the first camera module 121, the first operation unit 131, and the like are disposed on the front surface of the terminal body And a microphone 122, an interface unit 170, a second operation unit 132, and the like may be provided on the side surface.

The display unit 150 is configured to display (output) information processed by the mobile terminal 100. The display unit 150 may include a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED) ), A flexible display, a 3D display, and an e-ink display.

The display unit 150 may include a touch sensing means to receive a control command by a touch method. When a touch is made to any place on the display unit 150, the touch sensing means may be configured to detect this and input contents corresponding to the touched position. The content input by the touch method may be a letter or a number, an instruction in various modes, a menu item which can be designated, and the like.

The touch sensing means may be formed of a translucent material so that the visual information output from the display unit 150 can be seen, and a structure for enhancing the visibility of the touch screen in a bright place. Referring to FIG. 1, the display unit 150 occupies most of the front surface of the front case 101.

The proximity sensor 141, the illuminance sensor 142, the first sound output module 160 and the first camera module 121 are disposed in the vicinity of one end of the both ends of the display unit 150, The first operation unit 131 and the microphone 122 are disposed. The second operation unit 132 (see FIG. 2), the interface unit 170, and the like may be disposed on the side of the terminal body.

The proximity sensor 141 is configured to detect the presence or absence of an object existing in a predetermined detection area, and can be used to control other configurations including the display unit 150. [ For example, the proximity sensor 141 may be disposed at a position adjacent to the display unit 150 so that the display unit 150 is inactivated when the user brings the terminal body to the face to make a call.

The illuminance sensor 142 is configured to detect the brightness of light around the terminal body. The mobile terminal 100 may be configured to automatically adjust the illumination of the display unit 150 according to the amount of ambient light using the illumination sensor 142. [

The first sound output module 160 may be implemented as a receiver for delivering a call sound to a user's ear or a loud speaker for outputting various alarm sounds or multimedia playback sounds.

The sound generated from the first sound output module 160 may be configured to be emitted along the assembly gap between the structures. In this case, the hole formed independently for the apparent acoustic output is hidden or hidden, so that the appearance of the mobile terminal 100 can be simplified.

The first camera module 121 processes an image frame such as a still image or a moving image obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the display unit 150. [

The user input unit is operated to receive a command for controlling the operation of the mobile terminal 100 and may include first and second operation units 131 and 132. [ The first and second operation units 131 and 132 may be collectively referred to as a manipulating portion and may be any type of tactile manner such as touch, push, scroll, etc., .

In the figure, the first operation unit 131 is a touch key, but the present invention is not limited thereto. For example, the first operation unit 131 may be a mechanical key, or a combination of a touch key and a touch key.

The contents input by the first and / or second operation units 131 and 132 may be variously set. For example, the first operation unit 131 receives commands such as a menu, a home key, a cancellation, a search, and the like, and the second operation unit 132 controls the size of the sound outputted from the first sound output module 160 And a switch to the touch recognition mode of the display unit 150 and the like.

The microphone 122 is formed to receive a user's voice, other sounds, and the like. The microphone 122 may be provided at a plurality of locations to receive stereophonic sound.

The interface unit 170 is a path for allowing the mobile terminal 100 to exchange data with an external device. For example, the interface unit 170 may include a connection terminal for connecting to an earphone by wire or wireless, a port for short-range communication (for example, an IrDA port, a Bluetooth port, LAN Port) or the like, or power supply terminals for supplying power to the mobile terminal 100. [ The interface unit 170 may be implemented as a socket for receiving an external card such as a SIM (Subscriber Identification Module) or a UIM (User Identity Module) or a memory card for storing information.

2 is a rear perspective view of the mobile terminal 100 shown in FIG.

Referring to FIG. 2, a second camera module 121 'may be further mounted on a rear surface of the terminal body. The second camera module 121 ′ may be a camera having a photographing direction substantially opposite to the first camera module 121 (see FIG. 1) and having different pixels from the first camera module 121.

For example, in the case of a video call, the first camera module 121 has a low pixel so that it is easy to photograph a user's face and transmit it to the other party, and the second camera module 121 'captures a general subject. It is desirable to have a high pixel because it is often not transmitted immediately.

A flash 123 and a mirror 124 are additionally disposed adjacent to the second camera module 121 '. The flash 123 illuminates the subject when the subject is photographed by the second camera module 121 '. The mirror 124 allows the user to illuminate the user's own face or the like when the user intends to photograph (self-photograph) himself / herself using the second camera module 121 '.

A second sound output module 160 'may be further disposed on the rear surface of the terminal body. The second sound output module 160 'may implement the stereo function together with the first sound output module 160 (see FIG. 1) and may be used for the implementation of the speakerphone mode during a call.

An antenna (not shown) for receiving a broadcast signal may be additionally disposed on the side of the terminal body in addition to an antenna for a call or the like. An antenna constituting a part of the broadcast receiving module may be installed to be able to be drawn out from the terminal body.

The terminal body is provided with a power supply unit 190 for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 built in the terminal body or configured to be detachable from the outside of the terminal body.

3 is an exploded perspective view of the mobile terminal 100 of FIG. 2.

Referring to FIG. 3, the support member 104 is coupled to the front case 101 to form a mounting or arranging space for various electronic devices or internal structures. The support member 104 may have a thin thickness (eg, about 0.2 mm), but may be formed of a metal sheet having high rigidity (eg, stainless steel).

A display is disposed on the front surface of the support member 104 to output visual information to the front surface of the terminal body. On the other hand, as shown, the circuit board 180 is disposed on the back surface of the support member 104. The circuit board 180 may be configured as an example of a control unit for operating various functions of the mobile terminal 100. At this time, the boss (105) provided in the front case 101 or the support member 104 is inserted in whole or part into the hole or groove (180a) formed in the circuit board 180, the circuit board 180 It may be made to fix the to a predetermined position. At least one of these bosses 105 may be configured with a protrusion 220 to be described later.

The terminal body is provided with an input device 200 so that a user can input a control command to the mobile terminal 100 through a pressing operation. The input device 200 of the present invention is an input device 200 including a dome switch, for example, a second operation unit disposed on the side of the terminal body and configured to generate different control commands according to the position of pressing operation. 132 may be applied.

Hereinafter, the structure of preventing the malfunction in the input device 200 which generates different control commands according to the position of pressing operation will be described in more detail.

4 is a conceptual view illustrating the input apparatus 200 shown in FIG. 3, and FIG. 5 is an exploded perspective view of the input apparatus 200 of FIG. 4.

4 and 5, the inside of the terminal body is provided with a rib 210 extending in one direction. In this drawing, the rib 210 is provided on the edge portion of the support member 104 is formed to extend along the longitudinal direction of the terminal body. Rib 210 may be formed integrally with the support member 104, or may be configured to be coupled to the support member 104 as a separate member. Of course, the rib 210 is not limited to the support member 104. For example, the rib 210 may be integrally formed with the front case 101 through injection molding.

The protrusion 220 is disposed at a position spaced apart from the inside of the rib 210 facing the inside of the terminal body at a predetermined interval. In this figure, it is shown that the protrusion 220 is provided in the support member 104. As described above, the protrusion 220 may be formed to protrude from the front case 101, and may be formed of a structure in which a metal material is reinforced therein through double injection to ensure a certain level of rigidity.

The flexible circuit board 230 includes a plurality of dome switches 231, 232, and 233 electrically connected to the circuit board 180 and configured to generate a control signal corresponding to the pressing operation of the key top 240. do. The plurality of dome switches 231, 232, and 233 may include, for example, first and second dome switches 231 and 232 formed to receive control commands related to each other, and the first and second switches 231, The third dome switch 233 may be configured to receive an independent control command separate from 232.

The flexible circuit board 230 may include first and second support parts 230a and 230b. The first support part 230a may include first and second dome switches 231 and 232 spaced apart from each other, and may be supported by an inner wall of the rib 210 facing the protrusion 220. The second support part 230b may extend from the first support part 230a to be supported by the outer wall of the rib 210 and may include a third dome switch 233. In this case, the third dome switch 233 is preferably disposed between the first dome switch 231 and the second dome switch 232.

A flexible hole 230c may be formed in the flexible circuit board 230 to accommodate the protrusion 220. The protrusion 220 is inserted into the fixing hole 230c to fix the position of the flexible circuit board 230. Accordingly, the first to third dome switches 231, 232, and 233 may be fixed at positions facing the first to third pressing units 251, 252, and 253 respectively corresponding thereto. In addition, since a separate fixing structure is unnecessary, material costs can be reduced.

At least a portion of the terminal body is provided with a key top 240 formed to be pressed. The key top 240 has a hollow portion for receiving the rib 210. As shown, one side of the key top 240 is disposed to cover the outer wall of the rib 210 is exposed to the outside, the other side may be disposed between the inner wall of the rib 210 and the protrusion 220. When the other side of the key top 240 is supported by the protrusion 220, when one end of the key top 240 is pressed, the key top 240 is tilted using the protrusion 220 as the rotation axis, and when the central portion of the key top 240 is pressed. The central portion is made to elastically deform toward the hollow portion.

On the inner surface of the key top 240 defining the hollow portion, the first to third pressing parts 251, 252, and 253 protrude to correspond to the first to third dome switches 231, 232, and 233, respectively. In the drawing, the first and second pressing parts 251 and 252 are formed to protrude on the inner side of the key top 240 facing the inner wall of the rib 210, and the key top facing the outer wall of the rib 210, respectively. It is shown that the third pressing portion 253 is formed to protrude on the inner surface of the 240.

Hereinafter, a mechanism and a more specific structure of the input device 200 having the above structure will be described based on the operation example of the input device 200.

6A through 6D are conceptual views illustrating operations of the input apparatus 200 illustrated in FIG. 4. Specifically, FIG. 6A illustrates a general state in which no part of the key top 240 is pressed, and FIGS. 6B and 6C show a state in which both ends of the key top 240 are pressed and tilted, and FIG. 6C illustrates a center of the key top 240. The part is pressed to show the elastically deformed state.

Referring to FIG. 6A, the key top 240 is not tilted or pressed to either side in a general state. Accordingly, the first to third dome switches 231, 232, and 233 are not pressed by the first to third pressing units 251, 252, and 253 respectively corresponding thereto, and thus do not generate any control signal.

6B and 6C, when one end of the key top 240 is pressed, the other side of the key top 240 is rotated in contact with the outer circumferential surface of the protrusion 220, and as a result, one end of the key top 240 is rotated. It is tilted to face the inside of the terminal body. For smooth tilting, the protrusion 220 may be formed in a cylinder shape.

When one end of the key top 240 is tilted, the pressing parts 251 and 252 disposed adjacent to the other end of the key top 240 among the first and second pressing parts 251 and 252 may correspond to the first or second corresponding parts. And pressurizes the dome switches 231 and 232. That is, unlike the general key structure, the input device 200 of the present invention has a seesaw structure in which one dome switch 231 or 232 disposed adjacent to the other end is pressed when one end of the key top 240 is tilted. It can be understood as.

At this time, the dome switches 231 and 232 adjacent to one end of the key top 240 among the first and second dome switches 231 and 232 are formed to generate a control signal when the other end of the key top 240 is tilted. do. In addition, the first and second dome switches 231 and 232 may control commands that are opposite to each other (eg, volume up / down, zoom-in / zoom-out during shooting, adjustment of left / right or up / down direction, and transfer). / Move to the next page, move to the up / down menu, etc.).

For example, one end and the other end of the key top 240 are respectively formed to receive the up and down of the volume, respectively, the dome switch 231, 232 for generating a control signal corresponding to the opposite side of the pressing portion, that is, The other end and one end of the key top 240 are disposed adjacent to each other. Therefore, when the user presses one end of the key top 240 to increase the volume, the dome switches 231 and 232 disposed adjacent to the other end of the key top 240 are pressed to generate a control signal corresponding to the volume up. do.

Referring to FIG. 6D, when the central portion of the key top 240 is pressed, the key top 240 is supported by the protrusion 220 such that the central portion is elastically deformed. In this drawing, one side of the key top 240 exposed to the outside is illustrated to be elastically deformed toward the hollow portion, but the other side of the key top 240 may be configured to elastically deform.

Grooves 241 recessed toward one side of the key top 240 exposed to the outside may be formed at both ends of the inner surface of the key top 240 where the third dome switch 233 is formed. According to the above structure, the thickness of the portion where the groove 241 is formed is thinner than other portions, so that elastic deformation easily occurs.

As a result of the elastic deformation of the central portion of the key top 240, the third pressing unit 253 presses the third dome switch 233. In order to secure the reliability of the series of mechanisms, the third pressing part 253, the third dome switch 233, and the protrusion 220 are disposed at the central portion of the key top 240 in the thickness direction of the key top 240. It is preferable to arrange correspondingly.

If the third pressing portion 253 and the third dome switch 233 are disposed at a position away from the central portion, accurate input cannot be made, and if the protrusion 220 is disposed at a position away from the central portion, When the central portion is pressed, the key top 240 is tilted.

When the central portion of the key top 240 is pressed, the first and second pressing parts 251 and 252 do not press the first and second dome switches 231 and 232 corresponding thereto. That is, only the third dome switch 233 may be independently pressed. The third dome switch 233 may be configured to receive a control command for a hot key that performs a separate function from the first and second dome switches 231 and 232. The third dome switch 233 may be configured to receive, for example, a control command such as entering a specific mode, capturing a screen, or muting the phone, and receiving different control signals according to the state of the mobile terminal 100. It can be formed to produce.

According to the present invention having the above-described configuration, when one end of the key top 240 is pressed, the key top 240 is tilted with the protrusion 220 as the rotation axis, so that the pressing part 251 is disposed adjacent to the other end of the key top 240. , 252 is made to press the corresponding dome switch (231, 232), and when the central portion of the key top 240 is pressed, the key top 240 is supported by the protrusion 220, the center portion is elastically deformed toward the hollow portion As a result, the pressing unit 253 disposed in the center portion is configured to press the corresponding dome switch 233, thereby preventing a malfunction in which adjacent switches are pressed together.

In addition, when the dome switch 233 corresponding to the central portion of the key top 240 is configured to receive a control command for a shortcut key, at least two functions may function as a hybrid input device 200 in which one is combined. Can be. Therefore, the material cost may be reduced due to the decrease in the number of the input apparatus 200, and the mobile terminal 100 having a simpler structure may be implemented.

7 and 8 are conceptual views illustrating modified examples of the input apparatus 200 of FIG. 4. In the following description of the other embodiments of the present invention, the same or similar reference numerals are given to the same or similar components as those of the preceding embodiments, and the description thereof is replaced with the first explanation.

Referring to FIG. 7, the rear case 102 is coupled to the front case 101 to cover the circuit board 180. The rear case 102 covers the circuit board 180 to protect circuit components. As shown in FIG. 3, the rear case 102 may be configured not to be exposed to the appearance of the terminal body.

The front case 101 and the rear case 102 may be coupled to each other through the boss 105 and the fastening member 106 fastened thereto. The boss 105 not only combines the plurality of members in this manner, but also supports and fixes the position of another member disposed between the plurality of members, for example, the circuit board 180.

Any one of the plurality of bosses 105 may be configured as the protrusion 320 of the input device 300. A thread line corresponding to the thread of the fastening member 106 may be formed on the inner surface of the protrusion 320 so that the fastening member 106 may be screwed. For example, the protrusion 320 may have a structure in which a metal member 321 having a screw line is reinforced therein through a double injection.

According to the above structure, since the metal member 321 and the fastening member 106 reinforce the rigidity of the protrusion 220, the key top 340 may be sufficiently supported when the central portion of the key top 340 is pressed. The above rigidity can be secured.

Referring to FIG. 8, the key top 440 may include first and second bodies 440a and 440b formed of different materials.

Specifically, the first body 440a may be formed in a hollow shape and formed of a synthetic resin material. An accommodation groove 442 may be formed in the first body 440a to accommodate all or a portion of the protrusion 220. According to this, since the receiving groove 442 is made to guide the rotation of the key top 240 with the protrusion 420 as the rotation axis, the operation feeling can be improved when the key top 440 is tilted, and the reliability of the rotation can be improved. have.

The second body 440b includes a third pressing unit 453 and may be made of an elastic material (for example, silicon, rubber, polyurethane, etc.). The second body 440b is preferably formed integrally with the first body 440a through double injection. In addition, the second body 440b may be formed to define a groove 441 protruding from the inner surface of the first body 440a to facilitate elastic deformation. Unlike the drawing, the key top 440 may include another body having the first and second pressing parts 451 and 452.

The mobile terminal described above is not limited to the configuration and method of the embodiments described above, but the embodiments may be configured by selectively combining all or a part of the embodiments so that various modifications may be made.

Claims (17)

A rib provided in the terminal body and extending in one direction;
A protrusion disposed spaced apart from the rib at a predetermined interval;
A first dome switch and a second dome switch supported on an inner wall of the rib facing the protrusion and spaced apart from each other;
A key top provided with a hollow part accommodating the rib, and having one side supported by the protrusion part such that the protrusion is tiltable with the protrusion part as a rotation axis; And
The inner surface of the key top defining the hollow portion protrudes corresponding to the first and second dome switches, respectively, and when one end of the key top is tilted, it is adjacent to the other end of the key top of the first and second dome switches. A mobile terminal comprising a first pressing portion and a second pressing portion formed to press the dome switch disposed. The method of claim 1,
And a dome switch adjacent to one end of the key top of the first and second dome switches is configured to generate a control signal when the other end of the key top is tilted. The method of claim 1,
The protrusion is formed in the shape of a cylinder,
The key top is a mobile terminal, characterized in that the one side is rotated and tilted in contact with the outer peripheral surface of the protrusion. The method of claim 1,
The protrusion is formed in the shape of a cylinder,
The key top is a mobile terminal, characterized in that at least a portion of the projection is accommodated is formed receiving groove which is rotatable the key top. The method of claim 1,
And a support member coupled to a case forming an exterior of the terminal body to support a circuit board, the support member including the rib and the protrusion. The method of claim 1,
The protrusion is a mobile terminal, characterized in that the boss formed to support the internal parts of the terminal body. The method according to claim 6,
Mobile terminal, characterized in that the screw thread is formed on the inner surface of the protrusion so that the fastening member is screwed. The method of claim 1,
A third dome switch supported on an outer wall of the rib and disposed between the first dome switch and the second dome switch; And
Protrudes from the inner side of the key top to correspond to the third dome switch, and when the central portion of the key top is pressed, the key top is supported by the protrusion and is formed to press the third dome switch by elastically deforming the central portion. The mobile terminal further comprises a pressing unit. 9. The method of claim 8,
The first and second dome switch is formed to receive a control command opposite to each other,
The third dome switch is a mobile terminal, characterized in that formed to receive a control command for a hot key. 9. The method of claim 8,
The third dome switch is a mobile terminal, characterized in that disposed in the thickness direction of the key top corresponding to the protrusion. 9. The method of claim 8,
And a groove recessed toward an outer surface to facilitate the elastic deformation at both ends of the inner surface of the key top where the third dome switch is formed. 12. The method of claim 11,
In the keytop,
A first body having a hollow shape; And
And a second body formed of a different material from the first body, protruding from an inner surface of the first body to define the groove, and having a third pressing part. The method of claim 12,
The first and second body is a mobile terminal, characterized in that formed integrally by double injection. 9. The method of claim 8,
And a flexible circuit board electrically connected to a circuit board provided in the terminal body, the flexible circuit board including the first to third dome switches.
The flexible circuit board includes:
A first support part having the first and second dome switches and supported by an inner wall of the rib; And
And a second support portion extending from the first support portion and supported on an outer wall of the rib and including the third dome switch. 15. The method of claim 14,
The flexible printed circuit board further includes a fixing hole formed to receive the protrusion to fix the position of the flexible printed circuit board. A key top installed at the terminal body to allow both ends to be tilted and having a hollow part;
A first pressurizing part and a second pressurizing part protruding from one inner surface of the key top defining the hollow part and spaced apart from each other; And
A first dome switch and a second dome switch accommodated in the hollow part and formed to correspond to the first and second pressing parts, respectively;
When one end of the key top is tilted, the mobile terminal, characterized in that for pressing the first or second dome switch corresponding to the pressing portion disposed adjacent to the other end of the key top of the first and second pressing portion. A rib provided in the terminal body and extending in one direction;
A protrusion disposed spaced apart from the inner wall of the rib at a predetermined interval;
A dome switch supported on an outer wall of the rib; And
A key top provided with a hollow part accommodating the rib, and having one side supported by the protrusion part such that the protrusion is tiltable with the protrusion part as a rotation axis; And
Protrudes from the inner side of the key top defining the hollow part corresponding to the dome switch, and when the central part of the key top is pressed, the key top is supported by the protrusion to form the central part to elastically deform to press the dome switch. A mobile terminal comprising a pressing unit.

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