KR102056373B1 - Mobile terminal - Google Patents

Abstract

The present invention includes a terminal body having a front surface and a rear surface, a display unit disposed on the front surface and configured to output visual information, and a rear input unit disposed on the rear surface and configured to receive a control command by a push operation. The rear input unit may include a button unit exposed to the outside from the rear surface to receive a push input, a switch pressurized by a push input of the button unit to generate a signal, and an operation generated when the switch is pressed. It provides a mobile terminal including an operation sound shield formed to surround at least a portion of the switch to shield the sound.

Description

Mobile terminal {MOBILE TERMINAL}

The present invention relates to a mobile terminal having a user input unit for receiving a control command.

Mobile terminals are portable electronic devices that are portable and have one or more functions such as voice and video calling, information input and output, and data storage.

As the functions are diversified, the mobile terminal is implemented in the form of a multimedia player having complex functions such as photographing a picture or video, playing a music or video file, receiving a broadcast, and playing a game.

Various new attempts have been applied in terms of hardware or software to implement the complex functions of such multimedia devices. For example, a user interface environment is provided for a user to search for or select a function easily and conveniently.

In addition, while the mobile terminal is regarded as a personal portable device for expressing its personality, various design forms are required. The design form includes structural changes and improvements for the user to use the mobile terminal more conveniently. As one of such structural changes and improvements, the user input unit may be considered.

For example, the user input unit may be implemented as a touch screen on a front surface or a key provided separately to receive a user input. However, the touch screen has a disadvantage in that the manipulation target is covered by a finger or a stylus pen. In order to eliminate these disadvantages, a separate key may be provided on the front or side of the terminal body. The key has a disadvantage of inhibiting slimming, simple design, and the like of the terminal. Therefore, a new structure of user input that can solve these disadvantages can be considered.

An object of the present invention is to provide a mobile terminal capable of user input of a new type different from the conventional one.

Another object of the present invention is to provide a mobile terminal to which a new design can be applied to the rear of the terminal.

Mobile terminal according to an embodiment of the present invention for realizing the above object, a terminal body having a front and rear, a display unit disposed on the front and formed to output visual information, and is disposed on the rear And a rear input unit configured to receive a control command by a push operation, wherein the rear input unit is exposed to the outside from the rear side and is pushed by a push input of the button unit and configured to receive a push input signal. And a switch configured to generate, and an operation sound shield formed to surround at least a portion of the switch to shield the operation sound generated when the switch is pressed.

According to an example related to the present invention, the operation sound shield is disposed to overlap the display unit in the thickness direction of the terminal body.

According to another example related to the present invention, the operation sound shielding part includes a shielding pad which is installed to surround at least a part of the switch on a circuit board on which the switch is mounted and is configured to absorb or reflect the operation sound.

The shielding pad may be formed of a porous material capable of elastic deformation. In addition, the shielding pad may be arranged to be spaced apart from the button part by a predetermined interval when the button part presses the switch.

The operation sound shielding part may further include a shielding rib which is formed to protrude from the rear surface of the button part and at least partially overlaps the shielding pad in a direction perpendicular to the direction in which the switch is pressed during the pressing operation.

An actuator formed to press the switch may be formed to protrude from the rear surface of the button unit, and the shielding rib may be formed to surround at least a portion of the actuator. In addition, the shielding pad may be disposed to surround the shielding rib.

The button unit may include a key top at least partially exposed to the outside through a through hole formed in a case of the terminal body, and an actuator disposed on a rear surface of the key top and configured to press the switch when the key top is pressed. It may include an elastic member, the shielding rib may be formed to protrude from the back of the elastic member.

The shielding rib may be formed to protrude along an edge of the elastic member. In addition, the elastic member is coupled to the case may be configured to elastically support the key top during the pressing operation of the key top.

The edge portion of the elastic member may be disposed to overlap the case in the thickness direction of the terminal body to prevent the operation sound from leaking to the rear surface.

According to another embodiment related to the present invention, the button portion is formed to be pressed by at least a portion of the through hole formed in the case of the terminal body is exposed to the outside, the operation sound shielding portion in the inner surface of the case The protrusion includes a partition wall formed to surround at least a portion of the through hole.

The partition wall may be disposed to contact a circuit board on which the switch is mounted.

According to another example related to the present invention, the operation sound shielding portion is coupled to the back of the button portion and the base having an actuator formed to press the switch when pressing the button portion, and extending from the base to the And a bridge formed to surround at least a portion of the switch, the bridge being supported by a circuit board on which the switch is installed to be elastically deformable during the gambling operation of the button unit.

According to another example related to the present disclosure, the button unit may include a center key receiving a push input of a first function, and a push input of a second function different from the first function and disposed on both sides of the center key, respectively. It includes a side key, wherein the shielding pad is formed to correspond to at least one of the center key and the side key.

According to another example related to the present disclosure, the mobile terminal may include a sub circuit board on which the switch is mounted, a main circuit board electrically connected to the sub circuit board and providing a space in which an electronic device is mounted; A shield can installed on the main circuit board to cover one electronic device, and a reinforcement member disposed to cover at least a portion of the shield can and supported by the main circuit board to support the sub circuit board. Include.

Between the reinforcing member and the shield can, a first vibration blocking unit capable of absorbing the vibration may be provided to prevent the vibration generated when the switch is pressed. In addition, a second vibration blocking unit may be provided between the shield can and the electronic device to prevent the vibration generated when the switch is pressed from being transmitted.

In addition, the present invention, the terminal body having a front and rear, a display unit disposed on the front and formed to output visual information, and a rear input unit disposed on the rear and configured to receive a control command by a push input The rear input unit may include a button unit configured to be pressed by at least a portion of the rear input unit being exposed to the outside through a through hole formed in the case of the terminal body, and pressed by the pressing operation of the button unit to generate a signal. And a switch formed therein, wherein the case protrudes from the button portion to prevent the force from being applied to the button portion, instead of the pressing operation. It starts.

According to an example related to the present invention, the pressing preventing part forms a closed loop completely surrounding the button part.

According to another embodiment related to the present invention, the pressing preventing part is disposed to overlap the display part in the thickness direction of the terminal body.

According to another example related to the present invention, the mobile terminal further includes a battery cover that is detachably coupled to cover the case and has a through hole corresponding to the pressing preventing part, and the pressing preventing part is Is inserted into the through-hole is formed to protrude from the battery cover.

According to another example related to the present disclosure, the button unit may include a center key receiving a push input of a first function, and a push input of a second function different from the first function and disposed on both sides of the center key, respectively. It includes a side key to receive.

The side key may include a through hole for receiving the center key.

The button unit may include an actuator coupled to the case and configured to elastically support the center key and the sight key and press the switch corresponding to the center key or the side key. It may further include an elastic member formed of a single member.

An incision may be formed in the elastic member to define a behavior region between the actuators so as to enable independent movement of the actuator corresponding to the pressing operation of the center key or the side key. The cutout may be formed to surround at least a portion of the actuator corresponding to the center key.

According to another example related to the present disclosure, the mobile terminal may include a sub circuit board on which the switch is mounted, a main circuit board electrically connected to the sub circuit board and providing a space in which an electronic device is mounted; A shield can installed on the main circuit board to cover one electronic device, and a reinforcement member disposed to cover at least a portion of the shield can and supported by the main circuit board to support the sub circuit board. Include.

The mobile terminal may further include a rib formed to protrude from an inner side surface of the case and support the reinforcing member so as to support the external force transmitted to the pressing preventing part. The rib may be provided in plural and may be formed at both sides with the through-hole interposed therebetween. Alternatively, the rib may be formed to surround at least a portion of the through hole.

The reinforcing member may be formed to protrude a bead (bead) to reinforce the strength of the reinforcing member. To support the rib, the bead may be formed to correspond to the rib.

Meanwhile, a guide hole is formed in the reinforcing member, and a guide member inserted into the guide hole may be installed in the shield can to guide the seating of the reinforcing member. The guide member may be a rivet.

According to another example related to the present invention, the mobile terminal includes a rib formed to protrude from the inner surface of the case, and a support portion protruding to support the rib on the other surface by providing a space on which the display unit is seated. It further comprises a frame having a.

The rib may be provided in plural and may be formed at both sides with the through-hole interposed therebetween.

According to the present invention having the above configuration, a user input unit is provided at the rear of the terminal body to implement a new type of user interface using the same. In addition, when the key is not placed on the front surface by replacing at least some functions of a key provided on the front surface, the front display unit may be configured to have a larger screen.

In addition, the pressing preventing portion may be prevented from being applied to the button unit by the non-pressing operation, and the pressing preventing portion and the switch may be firmly supported by various supporting structures. In addition, the operation sound generated when the switch is pressed by the operation sound shield may be shielded.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
Figure 2a is a front perspective view of an example of a mobile terminal according to the present invention.
Figure 2b is a rear perspective view of the mobile terminal shown in Figure 2a.
3 is an exploded view of the mobile terminal shown in FIG. 2B;
4 is a detailed exploded view of the portion A shown in FIG. 3.
FIG. 5 is a view of the mobile terminal of FIG. 2B taken along line VV; FIG.
6 is a cross-sectional view of the portion B shown in FIG.
FIG. 7 is a rear view of the rear case shown in FIG. 5; FIG.
8 is a conceptual view showing a support structure of the reinforcing member shown in FIG.
9 is a conceptual view showing another example of the rear input unit associated with the present invention.
10 is a sectional view showing another example of a rear input unit associated with the present invention;
FIG. 11 is a conceptual view illustrating a mechanism for shielding operation sound by the operation sound shield of FIG. 10; FIG.
12 is a sectional view showing another example of a rear input unit associated with the present invention;
FIG. 13 is a view showing the rear surface of the elastic member shown in FIG. 12; FIG.
FIG. 14 is a conceptual view illustrating a mechanism for shielding operation sound by the operation sound shield of FIG. 12; FIG.
Figure 15 is a cross-sectional view showing another example of the rear input unit associated with the present invention.
FIG. 16 is a rear view of the rear case shown in FIG. 15; FIG.
FIG. 17 is a conceptual view illustrating a mechanism for shielding operation sound by the operation sound shield of FIG. 15; FIG.
18 is a cross-sectional view showing another example of a rear input unit according to the present invention;
19 is a conceptual view illustrating an example of a support structure of a rear input unit according to the present invention;

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 assigned to the same or similar configurations in different embodiments, and the description thereof is replaced with the first description. As used herein, the singular forms "a", "an" and "the" include plural forms unless the context clearly indicates otherwise. In addition, the suffixes "module" and "unit" for the components used in the following description are given or mixed in consideration of ease of specification, and do not have distinct meanings or roles from each other.

The mobile terminal described herein includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), an e-book, Navigation and the like.

1 is a block diagram of a mobile terminal 100 according to an embodiment of the present invention.

The mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, and an interface. The unit 170, the controller 180, and the power supply unit 190 may be included. The components shown in FIG. 1 are not essential, so that the mobile terminal 100 may have more components or fewer components.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules that enable wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and a network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short range communication module 114, a location information module 115, and the like. .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.

The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 may include, for example, Digital Multimedia Broadcasting-Terrestrial (DMB-T), Digital Multimedia Broadcasting-Satellite (DMB-S), Media Forward Link Only (MediaFLO), and Digital Video Broadcast (DVB-H). Digital broadcast signals can be received using digital broadcasting systems such as Handheld and Integrated Services Digital Broadcast-Terrestrial (ISDB-T). Of course, the broadcast receiving module 111 may be configured to be suitable for not only the above-described digital broadcasting system but also other broadcasting systems.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives a wireless signal with at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call call signal, or a text / multimedia message.

The wireless internet module 113 refers to a module for wireless internet access and may be embedded or external to the mobile terminal 100. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used.

The location information module 115 is a module for obtaining a location of the mobile terminal 100, and a representative example thereof is a GPS (Global Position System) module.

Referring to FIG. 1, the A / V input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame may be displayed on the display unit 151.

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. Two or more cameras 121 may be provided according to the use environment.

The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into electrical voice data. The processed voice data may be converted into a form transmittable to the mobile communication base station through the mobile communication module 112 and output in the call mode. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 generates input data for the user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like.

The sensing unit 140 is a mobile terminal 100 such as an open / closed state of the mobile terminal 100, a location of the mobile terminal 100, a presence or absence of a user contact, an orientation of the mobile terminal 100, an acceleration / deceleration of the mobile terminal 100, and the like. A sensing signal for controlling the operation of the mobile terminal 100 is generated by detecting the current state. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to the external device may be sensed. The sensing unit 140 may include a proximity sensor 141.

The output unit 150 is used to generate an output related to sight, hearing, or tactile sense, and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154. Can be.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal 100 is in a call mode, the mobile terminal 100 displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the mobile terminal 100 is in a video call mode or a shooting mode, the mobile terminal 100 displays a photographed and / or received image, a UI, or a GUI.

The display unit 151 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display (flexible). and at least one of a 3D display.

Some of these displays can be configured to be transparent or light transmissive so that they can be seen from the outside. This may be referred to as a transparent display. A representative example of the transparent display is TOLED (Transparant OLED). The rear structure of the display unit 151 may also be configured as a light transmissive structure. With this structure, the user can see the object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

According to an implementation form of the mobile terminal 100, two or more display units 151 may exist. For example, a plurality of display modules may be spaced apart or integrally disposed on one surface of the mobile terminal 100 or may be disposed on different surfaces.

When the display unit 151 and a sensor for detecting a touch operation (hereinafter, referred to as a “touch sensor”) form a mutual layer structure (hereinafter referred to as a “touch screen”), the display unit 151 may be used in addition to an output device. Can also be used as an input device. The touch sensor may have, for example, a form of a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in pressure applied to a specific portion of the display unit 151 or capacitance generated at a specific portion of the display unit 151 into an electrical input signal. The touch sensor may be configured to detect not only the position and area of the touch but also the pressure at the touch.

When there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and then transmits the corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched.

Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of the mobile terminal 100 surrounded by the touch screen or near the touch screen. The proximity sensor 141 refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or an object present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. The proximity sensor 141 has a longer life and higher utilization than a contact sensor.

Examples of the proximity sensor 141 include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. When the touch screen is capacitive, the touch screen is configured to detect the proximity of the pointer by the change of the electric field according to the proximity of the pointer. In this case, the touch screen (touch sensor) may be classified as a proximity sensor 141.

Hereinafter, for convenience of explanation, the act of allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." The position at which the proximity touch is performed by the pointer on the touch screen means a position where the pointer is perpendicular to the touch screen when the pointer is in proximity touch.

The proximity sensor 141 detects a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). Information corresponding to the sensed proximity touch operation and proximity touch pattern may be output on the touch screen.

The sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output module 152 may also output a sound signal related to a function (for example, a call signal reception sound or a message reception sound) performed in the mobile terminal 100. The sound output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the mobile terminal 100. Examples of events generated in the mobile terminal 100 include call signal reception, message reception, key signal input, and touch input. The alarm unit 153 may output a signal for notifying the occurrence of an event in a form other than a video signal or an audio signal, for example, vibration. The video signal or the audio signal may be output through the display unit 151 or the audio output module 152, so that they 151 and 152 may be classified as part of the alarm unit 153.

The haptic module 154 generates various tactile effects that a user can feel. Vibration is a representative example of the haptic effect generated by the haptic module 154. The intensity and pattern of vibration generated by the haptic module 154 can be controlled. For example, different vibrations may be synthesized and output or may be sequentially output.

In addition to vibration, the haptic module 154 may be configured to provide a pin array that vertically moves with respect to the contact skin surface, a jetting force or suction force of air through the jetting or suction port, grazing to the skin surface, contact of the electrode, electrostatic force, and the like. Various tactile effects can be generated, such as effects by the endothermic and the reproduction of a sense of cold using the elements capable of endotherm or heat generation.

The haptic module 154 may not only deliver the haptic effect through direct contact, but may also be implemented to allow the user to feel the haptic effect through a muscle sense such as a finger or an arm. Two or more haptic modules 154 may be provided according to configuration aspects of the mobile terminal 100.

The memory 160 may store a program for the operation of the controller 180 and may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). The memory 160 may store data regarding vibration and sound of various patterns output when a touch input on the touch screen is performed.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), RAM (Random Access Memory, RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic Memory, Magnetic It may include a storage medium of at least one type of disk, optical disk. The mobile terminal 100 may operate in connection with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device, receives power, transfers the power to each component inside the mobile terminal 100, or transmits data inside the mobile terminal 100 to an external device. For example, wired / wireless headset ports, external charger ports, wired / wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input / output (I / O) ports, The video input / output (I / O) port, the earphone port, and the like may be included in the interface unit 170.

The identification module is a chip that stores various types of information for authenticating the usage rights of the mobile terminal 100, and includes a user identification module (UIM), a subscriber identify module (SIM), and a universal user authentication module ( Universal Subscriber Identity Module (USIM), and the like. A device equipped with an identification module (hereinafter referred to as an 'identification device') may be manufactured in the form of a smart card. Therefore, the identification device may be connected to the terminal 100 through a port.

The interface unit may be a passage through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, or various command signals input from the cradle by a user may be transferred. It may be a passage that is delivered to the terminal. Various command signals or power input from the cradle may be operated as signals for recognizing that the mobile terminal is correctly mounted on the cradle.

The controller 180 typically controls the overall operation of the mobile terminal 100. For example, perform related control and processing for voice calls, data communications, video calls, and the like. The controller 180 may include a multimedia module 181 for playing multimedia. The multimedia module 181 may be implemented in the controller 180 or may be implemented separately from the controller 180.

The controller 180 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on the touch screen as text and an image, respectively.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

Various embodiments described herein may be implemented in a recording medium readable by a computer or similar device using, for example, software, hardware or a combination thereof.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. These may be implemented by the controller 180.

In a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that allow at least one function or operation to be performed. The software code may be implemented by a software application written in a suitable programming language. The software code may be stored in the memory 160 and executed by the controller 180.

2A is a front perspective view of an example of a mobile terminal 200 according to the present invention, and FIG. 2B is a rear perspective view of the mobile terminal 200 shown in FIG. 2A.

The disclosed mobile terminal 200 has a terminal body in the form of a bar. However, the present invention is not limited thereto and may be applied to various structures such as a slide type, a folder type, a swing type, a swivel type, and two or more bodies are coupled to be relatively movable.

The terminal body includes a casing (casing, housing, cover, etc.) forming an external appearance. In this embodiment, the case may be divided into a front case 201, a rear case 202, and a battery cover 203. Various elements are built in the space formed between the front case 201 and the rear case 202. At least one frame 204 may be further disposed between the front case 201 and the rear case 202.

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

The display unit 251, the audio output module 252, the proximity sensor 241, the camera module 221, and the like may be disposed in the terminal body, mainly the front case 201. A microphone 222, a side input unit 232, an interface 270, and the like may be disposed on side surfaces of the front case 201 and the rear case 202.

The display unit 251 occupies most of the main surface of the front case 201. That is, the display unit 251 is disposed on the front surface of the terminal body to output visual information. The audio output module 252, the proximity sensor 241, and the camera module 221 are disposed in regions adjacent to one end of both ends of the display unit 251, and the front input unit 231 is disposed in the region adjacent to the other end. Can be.

The front input unit 231 may include a plurality of manipulation units as an example of the user input unit 130 (see FIG. 1). The manipulation units may also be referred to collectively as a manipulating portion, and may be employed in any manner as long as the user is operating with a tactile feeling. In this embodiment, the front input unit 231 is configured with a touch key. However, the present invention is not limited thereto, and a push key may be added to the front input unit 231.

In addition, the display unit 251 may form a touch screen together with a touch sensor, and in this case, the touch screen may be the user input unit 130. Through this, the configuration without the front input unit 231 on the front of the terminal is also possible. In this case, the mobile terminal 200 may be configured such that an input operation to the terminal body is possible only through the display unit 251 and the rear input unit 233 to be described later.

The side input unit 232 configured as another example of the user input unit 130 may input a command such as adjusting the volume of the sound output from the sound output module 252 or switching to the touch recognition mode of the display unit 251. I can receive it.

Referring to FIG. 2B, a camera module 221 ′ may be additionally mounted on the rear of the terminal body, that is, the rear case 202. The camera module 221 ′ has a photographing direction substantially opposite to the camera 221 (see FIG. 2A), and may be a camera having different pixels from the camera module 221.

For example, the front camera module 221 has a low pixel so that it is easy to photograph the user's face and transmit it to the other party in case of a video call, and the rear camera module 221 'captures a general subject. It is desirable to have a high pixel because it is often not transmitted immediately. The camera modules 221 and 221 ′ may be installed in the terminal body in a rotatable or pop-up manner.

A flash 223 and a mirror (not shown) may be further disposed adjacent to the camera module 221 ′. The flash 223 emits light toward the subject when the subject is photographed by the camera module 221 ′. The mirror allows the user to see his / her face or the like when photographing (self-photographing) the user using the camera module 221 '.

The sound output module 252 'may be further disposed on the rear of the terminal body. The rear audio output module 252 ′ may implement a stereo function together with the front audio output module 252 (see FIG. 2A), and may be used to implement a speakerphone mode during a call.

The terminal body is equipped with a battery 291 for supplying power to the mobile terminal 200. The battery 291 is configured as an example of the power supply unit 190. The battery 291 may be built in the terminal body or detachably mounted to the terminal body.

According to the illustration, the rear input unit 233 is disposed on the rear of the terminal body. The rear input unit 233 may be located adjacent to the camera module 221 ′, for example.

The rear input unit 233 is manipulated to receive a command for controlling the operation of the mobile terminal 200, and the input content may be variously set. For example, commands such as power on / off, start, end, scrolling, adjusting the volume of sound output from the audio output modules 252 and 252 ', or switching to the touch recognition mode of the display module 251. You can get the same command.

The rear input unit 233 of the present invention is implemented in a form capable of a push input. Hereinafter, the configuration of the rear input unit 233 will be described in more detail.

3 is an exploded view of the mobile terminal 200 shown in FIG. 2B.

Referring to FIG. 3, circuit boards PCBs 281 and 282 are embedded in the terminal body. The circuit boards 281 and 282 may be mounted on the front case 201 or the rear case 202 or may be mounted on a separate structure. The separate structure may be a frame 204. Hereinafter, a structure in which the front case 201 and the rear case 202 are separately provided will be described as an example. However, the present invention is not limited thereto, and the cases 201 and 202 may be integrally formed.

The circuit boards 281 and 282 are configured as an example of the controller 180 (see FIG. 1) for operating various functions of the mobile terminal 200. Various electronic devices are mounted on the circuit boards 281 and 282 to perform functions as the controller 180. The circuit boards 281 and 282 may be provided in plural numbers, and may perform a function of the controller 180 by combining with each other. In this drawing, the circuit boards 281 and 282 have a main circuit board 281 and a sub circuit board 282 electrically connected to each other, and at least some of them are disposed to overlap each other in the thickness direction of the terminal body. It illustrates the extension to.

The rear case 202 is formed with a battery accommodating portion 292 for accommodating the battery 291, the battery cover 203 is detachably coupled to the rear case 202 to cover the battery accommodating portion 292. Unlike the above structure in which the battery 291 is detachable, the battery 291 may be built in the terminal body to be detachable.

The camera module 221 ′ is electrically connected to the circuit boards 281 and 282 and is disposed on the rear side of the terminal body to capture an external image on the rear side. The image window 221a ′ covers and protects the camera module 221 ′ and may be mounted on the rear case 202 and exposed to the outside through the through hole 203a of the battery cover 203 as shown.

The rear of the terminal body is provided with a rear input unit 233 that is operable to receive a control command. Through holes 202a and 203a corresponding to the rear input unit 233 are formed in the rear case 202 and the battery cover 203, respectively. The rear input unit 233 is exposed on the rear surface through the through holes 202a and 203a and is configured to be operable.

The rear input unit 233 may be disposed to overlap the front display unit 251 in the thickness direction of the terminal body. For example, the rear input unit 233 may be disposed at the rear upper end of the terminal body to be easily manipulated using the index finger when the user grips the terminal body with one hand. However, the present invention is not necessarily limited thereto, and the position of the rear input unit 233 may be changed.

Since the rear input unit 233 is provided on the rear side of the terminal body, a new type user interface using the same may be implemented. In addition, the rear input unit 233 replaces at least some functions of the front input unit 231, and when the front input unit 231 is not disposed on the front surface, the front display unit 251 is configured to have a larger screen. Can be.

Hereinafter, the detailed structure of the rear input unit 233 will be described in more detail.

4 is a detailed exploded view of the portion A shown in FIG. 3.

Referring to FIG. 3 together with FIG. 3, the rear input unit 233 includes a button unit 234 and switches 235a and 235b.

The button part 234 is configured to be push-operated by exposing at least a part of the button 234 to the outside through the through hole 202a formed in the rear case 202. The button unit 234 may be configured to be pushable in a thickness direction of the terminal body, that is, in a direction toward the display unit 151 on the front surface.

The button unit 234 may be disposed at a position adjacent to the camera module 221 ′. As shown in FIG. 3, the camera module 221 ′ and the button unit 234 may be disposed in the through hole 203a formed in a slot shape in the battery cover 203. According to such an arrangement relationship, a unity is provided on the rear surface of the terminal body, and a more advanced rear design can be realized.

The switches 235a and 235b are formed by pressing the button portion 234 to generate a signal. In the drawing, switches 235a and 235b corresponding to the center key 236 and the side key 237 are respectively installed on the sub circuit board 282.

The button portion 234 includes a center key 236 and a side key 237, which are formed of a rigid material. The center key 236 is configured to receive the push input of the first function. For example, the first function may be a function related to on / off of power or activation of the display unit 251. In this case, the center key 236 may be a power key of the mobile terminal 200.

The side keys 237 are disposed on both sides of the center key 236, respectively, and are configured to receive push inputs of a second function different from the first function. Side keys 237 disposed on both sides of the center key 236 may be formed to generate control commands that are opposite to each other. For example, the second function may be a function related to adjusting the volume of sound output from the mobile terminal 200.

The side key 237 may include a through hole 237a for receiving the center key 236, and may be configured to completely surround an outer circumference of the center key 236 accommodated in the through hole 237a. On the other hand, the center key 236 may be formed to protrude more than the side key 237, and at least a portion of the side key 237 is centered so that the side key 237 and the center key 236 smoothly run at the boundary of each other. It may be formed to be inclined in the direction projecting toward the key 236. Through this, the user can recognize the operation position of the button unit 234 by the touch.

An elastic member 238 is mounted on the rear surface of the center key 236 and the side key 237, and the switch 235a corresponding to the pressing operation of the center key 236 or the side key 237 is mounted on the elastic member 238. Actuators 238a and 238b (see FIG. 13, which is another embodiment) configured to pressurize 235b are formed to protrude. The elastic member 238 may be formed as a single member covering the back of the center key 236 and the side key 237 as shown, the fastening portion 238d is coupled to the back of the rear case 202 to the center It is formed to elastically support the key 236 and the side key 237.

The elastic member 238 is formed with a cutout 238c for partitioning the behavior area between the actuators 238a and 238b, and corresponding actuators 238a and 238b when the center key 236 or the side key 237 is pressed. It is configured to enable independent behavior of In this drawing, the cutout 238c illustrates that the cutout 238c is formed to surround at least a part of the actuator 238a corresponding to the center key 236.

On the other hand, since the button unit 234 is provided on the rear of the terminal body, it can be operated differently from the intention of the user. For example, when the user places the mobile terminal 200 on the bottom so that the front display unit 251 faces upward, a force may be applied to the button unit 234 to be pressed. The present invention has a structure that can prevent the accidental operation of the button unit 234 due to such a reaction force and damage caused by the reaction force. Hereinafter, the structure will be described in more detail.

FIG. 5 is a view illustrating the mobile terminal 200 of FIG. 2B taken along the line VV, and FIG. 6 is a cross-sectional view of the portion B shown in FIG. 5.

5 and 6, the rear case 202 protrudes from the button portion 234 to surround at least a portion of the through hole 202a to prevent a force other than a pressing operation from being applied to the button portion 234. The pressing prevention part 202b formed so that it may form is formed. According to the above structure, since the button portion 234 is disposed inward of the depression preventing portion 202b, the button portion 234 is not pressed even when the rear surface of the mobile terminal 200 is placed on the floor. The depression prevention unit 202b may be disposed to overlap the display unit 251 in the thickness direction of the terminal body.

In FIG. 4, the pressing preventing part 202b is formed to completely surround the button part 234 to form a closed loop. In this embodiment, since the center key 236 is a structure accommodated inside the side key 237, the pressing preventing portion 202b protrudes to cover the outer circumferential surface of the side key 237 and extends along the outer circumference. .

The rear case 202 is detachably coupled to the battery cover 203 covering the battery 291. The battery cover 203 has a through hole 203a corresponding to the depression preventing part 202b, and the through hole 203a has a larger size than the through hole 202a formed in the rear case 202. The depression preventing unit 202b may be configured to be inserted into the through hole 203a and protrude from the battery cover 203 when the battery cover 203 is coupled to the rear case 202.

On the other hand, since the button unit 234 is configured to be pushed operation, there is a need for a structure for supporting the force transmitted at this time. In addition, there is also a need for a structure that supports the reaction force applied to the pressing preventing portion 202b. Hereinafter, the supporting structure of the button portion 234 and the depression preventing portion 202b will be described in more detail.

FIG. 7 is a view illustrating the rear surface of the rear case 202 illustrated in FIG. 5, and FIG. 8 is a conceptual diagram illustrating a support structure of the reinforcing member 284 illustrated in FIG. 3.

Referring to Figures 7 and 8 together with Figures 3 to 6, the present invention illustrates a structure in which the center key 236 is illuminated. The sub circuit board 282 is provided with a switch 235a which is pressed by the pressing operation of the button part 234 and a light source 233a for irradiating light toward the switch 235a. The light irradiated from the light source 233a is guided to the switch 235a by the light guide film 233b to illuminate the center key 236 disposed on the switch 235a.

The light sources 233a may be disposed at both sides of the switch 235a, respectively. An empty space 282a may be formed between the light source 233a of the subcircuit board 282 and the switch 235a so as to be recessed from one side of the subcircuit board 282 toward the other side. The empty space 282a may be formed such that, for example, a plurality of substrates are connected to each other on the other side to form the empty space 282a.

The light guide film 233b may be disposed to pass over the empty space 282a. The light guide film 233b may be fixed by the protrusion 282b provided on the sub circuit board 282. In addition, the light guide film 233b is preferably formed except the switch 235a so that the actuator 238a directly presses the switch 235a. That is, the light guide film 233b is formed to surround the outer circumference of the switch 235a.

The main circuit board 281 is electrically connected to the sub circuit board 282 and provides a space in which the electronic device 281a is mounted. A shield can 283 is provided on the main circuit board 281, and is disposed to overlap the switches 235a and 235b in the thickness direction of the terminal body. The shield can 283 is disposed to cover the at least one electronic element 281a to shield the EMI, and is formed to support the switches 235a and 235b when the button unit 234 is pressed.

A reinforcing member 284 supported by the main circuit board 281 is provided on the shield can 283, and is formed to support the sub circuit board 282. The reinforcing member 284 may be formed of a high strength metal (eg, stainless steel) or a composite material. Bending portions 284a are provided at both sides of the reinforcing member 284 and are supported by the main circuit board 281. The bent portion 284a may be disposed to cover sidewalls of the shield can 283. According to the above structure, since the reinforcing member 284 is configured to support the switches 235a and 235b during the pressing operation of the button unit 234 together with the shield can 283, a more robust supporting structure can be realized.

On the other hand, the inner surface of the rear case 202 is formed with a rib 202c protrudes, it is supported by the reinforcing member (284). As shown, the rib 202c may be provided at both sides with the through hole 202a therebetween. Alternatively, the rib 202c may be formed to surround at least a portion of the through hole 202a. The external force transmitted to the depression prevention part 202b can be supported through the structure from the depression prevention part 202b to the reinforcing member 284 via the rib 202c.

In the reinforcing member 284, beads 284b for reinforcing the strength of the reinforcing member 284 are formed to protrude by a pressing process. The shape and position of the beads 284b may be variously modified. As shown, to support the ribs 202c, the beads 284b may be formed on both sides of the reinforcing member 284 to correspond to the ribs 202c, respectively. In addition, the beads 284b may be formed in a shape in which at least one portion is bent.

5 and 6, the beads 284b are inserted into the empty space 282a formed in the sub-circuit board 282 described above, and are formed to support the ribs 202c. The light guide film 233b may be disposed between the beads 284b and the ribs 202c.

Meanwhile, a guide hole 284c is formed in the reinforcing member 284, and a guide member 283a inserted into the guide hole 284c is installed in the shield can 283 to guide the seating of the reinforcing member 284. do. The guide member 283a may be formed to protrude in the form of a boss on the shield can 283. Furthermore, the guide member 283a may be configured to fasten the shield can 283 and the reinforcing member 284. This guide member 283a may be, for example, a rivet.

9 is a conceptual view illustrating another example of the rear input unit 333 according to the present invention.

9, the rib 302c protrudes from the inner surface of the rear case 302. As shown, a plurality of ribs 302c may be provided on both sides with a through hole 302a therebetween.

The front case 301 and the main circuit board 381 are disposed on the front and rear surfaces of the frame 304, respectively. A support portion 304a protrudes from the rear surface of the frame 304 so as to support the rib 302c. The support portion 304a may be provided in plural to correspond to the rib 302c and may be formed on both sides with the switches 335a and 335b therebetween.

The external force transmitted to the depression prevention part 302b can be supported through the structure from the depression prevention part 302b to the support part 304a via the rib 302c.

On the other hand, the operation sound is generated when the switch is pressed, the operation sound is transmitted to the inside or outside of the terminal body. In particular, since the distance between the rear input unit and the front sound output module in which the user's ear is located is short, the operation sound is quickly transmitted to the user's ear. The present invention has a structure that can shield the operation sound. Hereinafter, the structure will be described in more detail.

10 is a cross-sectional view illustrating another example of the rear input unit 433 according to the present invention, and FIG. 11 is a conceptual view illustrating a mechanism of shielding the operation sound S by the operation sound shield 439 of FIG. 10.

10 and 11, the operation sound shield 439 is formed to surround at least a portion of the switches 435a and 435b to shield the operation sound S generated when the switches 435a and 435b are pressed. That is, the operation sound S may be prevented from being transmitted to the front surface of the terminal body through the display unit 451 by the operation sound shield 439.

The operation sound shield 439 is installed to surround the switches 435a and 435b on the circuit board on which the switches 435a and 435b are mounted, and the shielding pad 439a is formed to absorb or reflect the operation sound S. Include. The shielding pad 439a may be formed of a porous material that is elastically deformable. For example, the shielding pad 439a may be urethane foam.

According to the experiment, it is preferable that the appropriate compression ratio of the shielding pad 439a is 60%. If the compression rate of the shielding pad 439a is greater than this, the shielding effect is inferior. On the contrary, if the compression rate is less than this, the click feeling may be affected when contacting the button portion 434.

The shielding pad 439a may be disposed to overlap the display unit 451 in the thickness direction of the terminal body, and may also be disposed to overlap the button unit 434 as shown.

The shielding pad 439a has a predetermined distance from the button portion 434 when the button portion 434 presses the switches 435a and 435b so as not to affect the user's feeling of click when the button portion 434 is pressed. It is preferred to be spaced apart. According to the experiment, the interval may be 0.15 mm. That is, the thickness of the shielding pad 439a is a value obtained by subtracting the sum of the distance between the button portion 434 and the sub-circuit board 482 from the distance between the button portion 434 and the gap for preventing a drop in click feeling. Can be calculated.

Looking at the shielding mechanism, when the button portion 434 is pressed and the switches 435a and 435b are pressed by the actuators 438a and 438b, the operation sound S is generated and spreads out. At this time, the shielding pad 439a is disposed to intercept the operation sound outlet space at the sides of the switches 435a and 435b, so as to absorb or reflect the operation sound S. Thus, the operation sound (S) can be shielded.

On the other hand, to prevent the operation sound (S) is emitted to the rear of the terminal body, the edge portion of the elastic member 438 may be disposed to overlap the rear case 402 in the thickness direction of the terminal body. In this figure, the edge part of the elastic member 438 is shown so that the back surface of the rear case 402 may be arrange | positioned. In addition, as described above, the fastening portion 438d of the elastic member 438 is coupled to the rear surface of the rear case 402 so that the keytop is pressed when the keytop is pressed, such as the center key 436 or the side key 437. It is formed to be sexually supported.

12 is a cross-sectional view showing another example of a rear input unit 533 according to the present invention, FIG. 13 is a view showing the rear surface of the elastic member 538 shown in FIG. 12, and FIG. 14 is the operation sound of FIG. It is a conceptual diagram showing the mechanism in which the shielding portion 539 shields the operation sound (S).

12 to 14, the operation sound shield 539 further includes a shielding rib 539b in addition to the shielding pad 539a described above. The shielding rib 539b is formed to protrude from the rear surface of the button portion 534, and is disposed to overlap at least a portion of the shielding pad 539a in a direction perpendicular to the direction in which the switches 535a and 535b are pressed during the pressing operation. Therefore, in the above-described structure, the remaining gap is removed to prevent the deterioration of the feeling of click, thereby implementing a more closed structure, and thus the shielding property may be improved.

The shielding rib 539b is formed to surround at least a part of the actuators 538a and 538b. The shielding rib 539b may be formed to protrude from the rear surface of the elastic member 538. In this figure, the shielding rib 539b protrudes along the rear edge of the elastic member 538 to form a closed loop, and the shielding pad 539a is illustrated to surround the shielding rib 539b. In this case, the shielding pad 539a serves to guide the movement of the elastic member 538 when the button portion 534 is pressed. On the other hand, unlike the illustrated structure, the shielding rib 539b may be formed to surround the shielding pad 539a.

FIG. 15 is a cross-sectional view illustrating another example of a rear input unit 633 according to the present invention, FIG. 16 is a rear view of the rear case 602 shown in FIG. 15, and FIG. 17 is an operation sound of FIG. 15. It is a conceptual diagram showing the mechanism that the shield 639 shields the operation sound (S).

15 to 17, the operation sound shield 639 includes a partition wall 602c that protrudes from an inner side surface of the rear case 602 to cover at least a portion of the through hole 602a. The partition wall 602c is disposed to block the operation sound outlet space at the sides of the switches 635a and 635b, and is formed to shield the operation sound S. FIG. That is, the operation sound S may be shielded by modifying the structure of the rear case 602 without the separate shielding pad 639a described above.

As illustrated in FIG. 16, the partition wall 602c may be formed except for the fastening portion 638d of the elastic member 638 coupled to the rear case 602. Meanwhile, the partition wall 602c may be disposed to be in contact with a circuit board on which the switches 635a and 635b are mounted or an optical guide film (not shown in this drawing) disposed on the circuit board.

18 is a cross-sectional view illustrating another example of a rear input unit 733 according to the present invention.

Referring to FIG. 18, the operation sound shield 739 supports the keytop such that a keytop such as a center key 736 or a side key 737 is disposed on the switches 735a and 735b, and presses the keytop. And is elastically deformed to press the switches 735a and 735b.

The operational sound shield 739 includes a base 739a and a bridge 739b. The base 739a and the bridge 739b may be integrally formed of an elastically deformable material.

Specifically, the base 739a is coupled to the rear surface of the button portion 734 and includes actuators 738a and 738b that are configured to press the switches 735a and 735b when the button portion 734 is pressed. The bridge 739b is formed to extend from the base 739a to surround the switches 735a and 735b, and is supported by the sub circuit board 782 on which the switches 735a and 735b are installed to push the button portion 734. When elastic deformation is formed.

According to the above structure, the switches 735a and 735b are completely covered by the operation sound shield 739. Therefore, the operation sound S generated when the switches 735a and 735b are pressed is blocked by the bridge 739b.

19 is a conceptual view illustrating an example of a support structure of the rear input unit 833 according to the present invention.

Referring to FIG. 19, the operation sound S generated when the switches 835a and 835b are pressed may be transmitted in the form of vibration as well as sound. As described above, the sub-circuit board 882 on which the switches 835a and 835b are installed is supported by the reinforcing member 884 and the shield can 883 arranged to overlap each other in the thickness direction of the terminal body. This means that vibration generated by the pressing of the switches 835a and 835b can be transmitted to the front surface of the terminal body through the reinforcing member 884 and the shield can 883.

To prevent this, a first vibration blocking part 839a is disposed between the reinforcing member 884 and the shield can 883. The first vibration blocking part 839a is formed of an elastically deformable material (eg, a urethane film) to block transmission of vibration between the reinforcing member 884 and the shield can 883, which may be generated accordingly. It is made to prevent noise.

In addition, a second vibration blocking part 839b is disposed between the shield can 883 and the electronic element covered by the shield can 883. The second vibration blocking part 839b is formed of an elastically deformable material (eg, urethane foam) to block transmission of vibration between the shield can 883 and the electronic device. Resonance of the shield can 883 may also be prevented by the second vibration blocking part 839b.

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 some of the embodiments so that various modifications can be made.

Claims (19)

A terminal body having a front side and a rear side;
A display unit disposed on the front surface and configured to output visual information; And
A rear input unit disposed on the rear surface and configured to receive a control command by a pressing operation;
The rear input unit,
A button unit exposed to the outside from the rear surface and configured to receive a push input;
A switch pressurized by a push input of the button unit to generate a signal; And
And a working sound shield formed to surround at least a portion of the switch to shield the working sound generated when the switch is pressed. The method of claim 1,
The operation sound shielding unit is disposed to overlap the display unit in the thickness direction of the terminal body. The method of claim 1,
The operation sound shield,
And a shielding pad provided on a circuit board on which the switch is mounted to surround at least a portion of the switch, the shielding pad being configured to absorb or reflect the operation sound. The method of claim 3,
The shielding pad is a mobile terminal, characterized in that formed of a porous material capable of elastic deformation. The method of claim 3,
The shielding pad may be arranged to be spaced apart from the button part when the button part presses the switch. The method of claim 3,
The operation sound shield,
And a shielding rib which is formed to protrude from the rear surface of the button part, and which at least partially overlaps the shielding pad in a direction perpendicular to the direction in which the switch is pressed during the pressing operation. The method of claim 6,
An actuator formed to protrude from the back of the button unit is formed to protrude,
The shielding rib is formed to surround at least a portion of the actuator. The method of claim 6,
And the shielding pad is arranged to surround the shielding rib. The method of claim 6,
The button unit,
A key top at least partially exposed to the outside through a through hole formed in a case of the terminal body; And
An elastic member disposed on a rear surface of the key top, the elastic member having an actuator configured to press the switch when the key top is pressed;
The shielding rib is formed to protrude from the rear surface of the elastic member. The method of claim 9,
The shielding rib is formed to protrude along an edge of the elastic member. The method of claim 9,
The elastic member is coupled to the case, the mobile terminal, characterized in that configured to elastically support the key top when the pressing operation of the key top. The method of claim 9,
The mobile terminal, characterized in that the edge portion of the elastic member is disposed so as to overlap the case in the thickness direction of the terminal body to prevent the operation sound is leaked to the rear surface. The method of claim 1,
The button part is formed to be pressed and exposed to at least a part of the through hole formed in the case of the terminal body to the outside,
The operation sound shielding part includes a partition wall protruding from an inner surface of the case to surround at least a portion of the through hole. The method of claim 13,
The barrier rib is disposed in contact with the circuit board on which the switch is mounted. The method of claim 1,
The operation sound shield,
A base coupled to a rear surface of the button unit and having an actuator configured to press the switch when the button unit is pressed; And
And a bridge extending from the base to surround at least a portion of the switch, the bridge being supported on a circuit board on which the switch is installed to be elastically deformable during the gambling operation of the button unit. The method of claim 3,
The button unit,
A center key receiving a push input of a first function; And
It is disposed on both sides with respect to the center key, and includes a side key for receiving a push input of the second function different from the first function,
The shielding pad is formed to correspond to at least one of the center key and the side key. The method of claim 1,
A sub circuit board on which the switch is mounted;
A main circuit board electrically connected to the sub circuit board and providing a space in which an electronic device is mounted;
A shield can installed on the main circuit board to cover at least one electronic device; And
And a reinforcing member disposed to cover at least a portion of the shield can and supported by the main circuit board to support the sub circuit board. The method of claim 17,
A mobile terminal, characterized in that between the reinforcing member and the shield can, a first vibration blocking unit capable of absorbing the vibration to prevent the vibration generated when the switch is pressed. The method of claim 18,
The mobile terminal, characterized in that between the shield can and the electronic device, a second vibration blocking unit capable of absorbing the vibration to prevent the vibration generated when the switch is pressed.

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