KR20170084444A - Mobile terminal - Google Patents

Abstract

A rear case including a battery insertion portion opened corresponding to the battery size and a side wall portion protruding from the periphery in the front direction; A main board coupled to a hook formed on the rear case; A pair of brackets coupled to an upper portion and a lower portion of a front surface of the rear case to fix the main board; A display unit disposed between the pair of brackets; A glass covering a front surface of the display unit and a front surface of the pair of brackets; A battery secured to the battery insertion portion; And a rear cover coupled to a rear surface of the rear case can reduce the thickness of the mobile terminal and reduce the number of members by omitting the front case. By using only the hooks and omitting the screw, the joint structure exposed to the outside can be minimized.

Description

[0001] MOBILE TERMINAL [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a mobile terminal in which a front case and a screw are omitted to reduce the thickness and the number of parts.

A terminal can be divided into a mobile terminal (mobile / portable terminal) and a stationary terminal according to whether the terminal can be moved. The mobile terminal can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the mobile terminal.

The functions of mobile terminals are diversified. For example, there are data and voice communication, photographing and video shooting through a camera, voice recording, music file playback through a speaker system, and outputting an image or video on a display unit. Some terminals are equipped with an electronic game play function or a multimedia player function. In particular, modern mobile terminals can receive multicast signals that provide visual content such as broadcast and video or television programs.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

Generally, the case of the mobile terminal is composed of a front case supporting the display unit, a rear case covering the backside of the front case, and a rear cover coupled to the rear side of the rear case. The front case and the rear case are coupled using screws , The rear case and rear cover are fastened with hooks.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mobile terminal in which the front case and the screw are omitted to reduce the thickness and the number of parts.

A rear case including a battery insertion portion opened corresponding to the battery size and a side wall portion protruding from the periphery in the front direction; A main board coupled to a hook formed on the rear case; A pair of brackets coupled to an upper portion and a lower portion of a front surface of the rear case to fix the main board; A display unit disposed between the pair of brackets; A glass covering a front surface of the display unit and a front surface of the pair of brackets; A battery secured to the battery insertion portion; And a rear cover coupled to a rear surface of the rear case.

An interface unit mounted on one end of the main board; And a through hole formed in the side wall portion and into which the interface portion is inserted, and the hook may include a first hook protruding from the upper portion of the through hole of the side wall portion.

And a lower bracket coupled to a lower portion of the mobile terminal of the bracket; and an antenna pattern portion forming the same plane as the first hook and engaging with the lower bracket and the front surface of the first hook.

The hook may include a second hook protruding inward from the side wall part and hooking an end of the main board.

The side wall portion may include: a first side wall covering a side surface of the glass; A second side wall covering a side surface of the display unit; And a glass seating part located between the first side wall and the second side wall and on which the glass is seated, and the second hook can be located on the second side wall.

Wherein the second sidewall is recessed from the inner side to include a thin recess portion, the second hook is located in the recess portion, and the main substrate protrudes in a shape corresponding to the recess portion, And hook protrusions hooked on the hooks.

The main board further includes a SMT hook member mounted on the back side of the battery inserting portion. The hook protrudes in a direction opposite to the battery inserting portion on the battery inserting portion bulkhead located around the battery inserting portion, And a third hook coupled with the SMT hook member.

The front surface of the main board and the end of the battery insertion portion barrier may form the same plane.

Wherein the SMT hook member is seated on a back surface of the main board; A fixing part protruded from the seating part and inserted into the main board; An extension extending in the back direction from the seating part and facing the battery compartment wall; And an opening formed in the extension portion and engaged with the third hook.

And a rib structure for supporting the extension portion so as not to be deformed.

The end of the extension may include a curved surface.

A camera seating part formed by cutting an upper part of the main board; And a rear camera module inserted into the camera seat and facing the back direction, wherein a front surface of the main board and a rear camera module are flush with each other.

An upper bracket coupled to an upper portion of the mobile terminal may fix the rear camera.

And a cushion interposed between the battery and the display unit.

A receiver coupled to an upper rear surface of the rear case; And an antenna carrier that covers the receiver and is coupled to an upper portion of the rear surface of the rear case.

The rear case is located in a lower portion of the battery insertion part and has a first resonance space in which a speaker is inserted; A second resonance space located at one side of the battery insertion portion; And a passage connecting the first resonance space and the second resonance space.

The front surface of the first resonance space may cover the first bonding pad and the main substrate, and the front surface of the second resonance space may cover the second bonding pad.

The mobile terminal according to the present invention can reduce the thickness of the mobile terminal and reduce the number of members by omitting the front case. By using only the hooks and omitting the screw, the joint structure exposed to the outside can be minimized.

Further scope of applicability of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.

1A is a block diagram illustrating a mobile terminal according to the present invention.
1B and 1C are conceptual diagrams illustrating an example of a mobile terminal according to the present invention in different directions.
2 is an exploded perspective view of a mobile terminal according to the present invention.
3 is a front view showing a state where a rear case of a mobile terminal of the present invention, a main board and a pair of brackets are coupled.
4 is a cross-sectional perspective view showing an AA cross section in FIG.
5 is a view showing a coupling method of the rear case and the main board of the mobile terminal of the present invention.
6 is a cross-sectional perspective view showing a cross-section taken along line BB in Fig.
7 is a perspective view showing a second hook of the mobile terminal of the present invention.
8 is a cross-sectional perspective view showing a CC section in Fig.
Fig. 9 is a perspective view showing a state in which the SMT hook of Fig. 8 is mounted on the main board.
10 is a perspective view illustrating a method of coupling a bracket to a rear case of the mobile terminal of the present invention.
11 is a cross-sectional view showing the DD section in Fig.
12 and 13 are views for explaining the resonance space of the speaker.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

 Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The mobile terminal described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a slate PC A tablet PC, an ultrabook, a wearable device such as a smartwatch, a smart glass, and a head mounted display (HMD). have.

However, it will be appreciated by those skilled in the art that the configuration according to the embodiments described herein may be applied to fixed terminals such as a digital TV, a desktop computer, a digital signage, and the like, will be.

1A to 1C are block diagrams for explaining a mobile terminal according to the present invention, and FIGS. 1B and 1C are conceptual diagrams showing an example of a mobile terminal according to the present invention in different directions.

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, and a power supply unit 190 ), And the like. The components shown in FIG. 1A are not essential for implementing a mobile terminal, so that the mobile terminal described herein may have more or fewer components than the components listed above.

The wireless communication unit 110 may be connected between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and another mobile terminal 100 or between the mobile terminal 100 and the external server 100. [ Lt; RTI ID = 0.0 > wireless < / RTI > In addition, the wireless communication unit 110 may include one or more modules for connecting the mobile terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, and a location information module 115 .

The input unit 120 includes a camera 121 or an image input unit for inputting a video signal, a microphone 122 for inputting an audio signal, an audio input unit, a user input unit 123 for receiving information from a user A touch key, a mechanical key, and the like). The voice data or image data collected by the input unit 120 may be analyzed and processed by a user's control command.

The sensing unit 140 may include at least one sensor for sensing at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information. For example, the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, A G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a finger scan sensor, an ultrasonic sensor, A microphone 226, a battery gauge, an environmental sensor (for example, a barometer, a hygrometer, a thermometer, a radiation detection sensor, A thermal sensor, a gas sensor, etc.), a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification can combine and utilize information sensed by at least two of the sensors.

The output unit 150 includes at least one of a display unit 151, an acoustic output unit 152, a haptic tip module 153, and a light output unit 154 to generate an output related to visual, auditory, can do. The display unit 151 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. The touch screen may function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user and may provide an output interface between the mobile terminal 100 and a user.

The interface unit 160 serves as a path to various types of external devices connected to the mobile terminal 100. The interface unit 160 is connected to a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, And may include at least one of a port, an audio I / O port, a video I / O port, and an earphone port. In the mobile terminal 100, corresponding to the connection of the external device to the interface unit 160, it is possible to perform appropriate control related to the connected external device.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs or applications running on the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Also, at least a part of these application programs may exist on the mobile terminal 100 from the time of shipment for the basic functions (e.g., telephone call receiving function, message receiving function, and calling function) of the mobile terminal 100. Meanwhile, the application program may be stored in the memory 170, installed on the mobile terminal 100, and may be operated by the control unit 180 to perform the operation (or function) of the mobile terminal.

In addition to the operations related to the application program, the control unit 180 typically controls the overall operation of the mobile terminal 100. The control unit 180 may process or process signals, data, information, and the like input or output through the above-mentioned components, or may drive an application program stored in the memory 170 to provide or process appropriate information or functions to the user.

In addition, the controller 180 may control at least some of the components illustrated in FIG. 1A in order to drive an application program stored in the memory 170. FIG. In addition, the controller 180 may operate at least two of the components included in the mobile terminal 100 in combination with each other for driving the application program.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to the components included in the mobile terminal 100. The power supply unit 190 includes a battery, which may be an internal battery or a replaceable battery.

At least some of the components may operate in cooperation with one another to implement a method of operation, control, or control of a mobile terminal according to various embodiments described below. In addition, the operation, control, or control method of the mobile terminal may be implemented on the mobile terminal by driving at least one application program stored in the memory 170. [

Referring to FIGS. 1B and 1C, 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 folder type, a flip type, a slide type, a swing type, and a swivel type in which a watch type, a clip type, a glass type or two or more bodies are relatively movably coupled . A description of a particular type of mobile terminal, although relevant to a particular type of mobile terminal, is generally applicable to other types of mobile terminals.

Here, the terminal body can be understood as a concept of referring to the mobile terminal 100 as at least one aggregate.

The mobile terminal 100 includes a case (for example, a frame, a housing, a cover, and the like) that forms an appearance. A display unit 151 is disposed on a front surface of the terminal body to output information. As illustrated, the window 151a of the display unit 151 may form a front surface of the terminal body.

In some cases, electronic components may also be mounted on the rear case 102. Electronic parts that can be mounted on the rear case 102 include detachable batteries, an identification module, a memory card, and the like. In this case, a rear cover 103 for covering the mounted electronic components can be detachably coupled to the rear case 102. Therefore, when the rear cover 103 is separated from the rear case 102, the electronic parts mounted on the rear case 102 are exposed to the outside.

As shown, when the rear cover 103 is coupled to the rear case 102, a side portion of the rear case 102 can be exposed. In some cases, the rear case 102 may be completely covered by the rear cover 103 during the engagement. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b and the sound output unit 152b to the outside.

These cases 102 and 103 may be formed by injection molding of synthetic resin or may be formed of metal such as stainless steel (STS), aluminum (Al), titanium (Ti) or the like.

The mobile terminal 100 may be configured such that one case provides the internal space, unlike the above example in which a plurality of cases provide an internal space for accommodating various electronic components. In this case, a universal mobile terminal 100 in which a synthetic resin or metal is connected from the side to the rear side can be realized.

Meanwhile, the mobile terminal 100 may include a waterproof unit (not shown) for preventing water from penetrating into the terminal body.

The mobile terminal 100 is provided with a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, Cameras 121a and 121b, first and second operation units 123a and 123b, a microphone 122, an interface unit 160, and the like.

1B and 1C, a display unit 151, a first sound output unit 152a, a proximity sensor 141, an illuminance sensor 142, an optical output unit (not shown) A second operation unit 123b, a microphone 122 and an interface unit 160 are disposed on a side surface of the terminal body, And a mobile terminal 100 having a second sound output unit 152b and a second camera 121b disposed on a rear surface thereof.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as needed, or placed on different planes. For example, the first operation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side surface of the terminal body rather than the rear surface of the terminal body.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

The display unit 151 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display display, a 3D display, and an e-ink display.

In addition, the display unit 151 may exist in two or more depending on the embodiment of the mobile terminal 100. In this case, the mobile terminal 100 may be provided with a plurality of display portions spaced apart from each other or disposed integrally with one another, or may be disposed on different surfaces, respectively.

The display unit 151 may include a touch sensor that senses a touch with respect to the display unit 151 so that a control command can be received by a touch method. When a touch is made to the display unit 151, the touch sensor senses the touch, and the control unit 180 generates a control command corresponding to the touch based on the touch. 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 sensor may be a film having a touch pattern and disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or may be a metal wire . Alternatively, the touch sensor may be formed integrally with the display. For example, the touch sensor may be disposed on a substrate of the display or inside the display.

In this way, the display unit 151 can form a touch screen together with the touch sensor. In this case, the touch screen can function as a user input unit 123 (see FIG. 1A). In some cases, the touch screen may replace at least some functions of the first operation unit 123a.

The first sound output unit 152a may be implemented as a receiver for transmitting a call sound to a user's ear and the second sound output unit 152b may be implemented as a loudspeaker 152b for outputting various alarm sounds or multimedia playback sounds. or in the form of a loud speaker.

The window 151a of the display unit 151 may be provided with an acoustic hole for emitting the sound generated from the first acoustic output unit 152a. However, the present invention is not limited to this, and the sound may be configured to be emitted along the assembly gap between the structures. In this case, the appearance of the mobile terminal 100 can be made more simple because the hole formed independently for the apparent acoustic output is hidden or hidden.

The optical output unit 154 is configured to output light for notifying the occurrence of an event. Examples of the event include a message reception, a call signal reception, a missed call, an alarm, a schedule notification, an email reception, and reception of information through an application. The control unit 180 may control the light output unit 154 to terminate the light output when the event confirmation of the user is detected.

The first camera 121a processes an image frame of a still image or a moving image obtained by the image sensor in the photographing mode or the video communication mode. The processed image frame can be displayed on the display unit 151 and can be stored in the memory 170. [

The first and second operation units 123a and 123b may be collectively referred to as a manipulating portion as an example of a user input unit 123 operated to receive a command for controlling the operation of the mobile terminal 100 have. The first and second operation units 123a and 123b can be employed in any manner as long as the user is in a tactile manner such as touch, push, scroll, or the like. In addition, the first and second operation units 123a and 123b may be employed in a manner that the user operates the apparatus without touching the user through a proximity touch, a hovering touch, or the like.

In this figure, the first operation unit 123a is a touch key, but the present invention is not limited thereto. For example, the first operation unit 123a may be a mechanical key, or a combination of a touch key and a touch key.

The contents input by the first and second operation units 123a and 123b can be variously set. For example, the first operation unit 123a receives a command such as a menu, a home key, a cancellation, a search, and the like, and the second operation unit 123b receives a command from the first or second sound output unit 152a or 152b The size of the sound, and the change of the display unit 151 to the touch recognition mode.

On the other hand, a rear input unit (not shown) may be provided on the rear surface of the terminal body as another example of the user input unit 123. The rear input unit is operated to receive a command for controlling the operation of the mobile terminal 100, and input contents may be variously set. For example, commands such as power on / off, start, end, scrolling, and the like, the size adjustment of the sound output from the first and second sound output units 152a and 152b, And the like can be inputted. The rear input unit may be implemented as a touch input, a push input, or a combination thereof.

The rear input unit may be disposed so as to overlap with the front display unit 151 in the thickness direction of the terminal body. For example, the rear input unit may be disposed at the rear upper end of the terminal body such that when the user holds the terminal body with one hand, the rear input unit can be easily manipulated using the index finger. However, the present invention is not limited thereto, and the position of the rear input unit may be changed.

When a rear input unit is provided on the rear surface of the terminal body, a new type of user interface using the rear input unit can be realized. When the first operation unit 123a is not disposed on the front surface of the terminal body in place of at least a part of the functions of the first operation unit 123a provided on the front surface of the terminal body, The display unit 151 can be configured as a larger screen.

Meanwhile, the mobile terminal 100 may be provided with a fingerprint recognition sensor for recognizing the fingerprint of the user, and the controller 180 may use the fingerprint information sensed through the fingerprint recognition sensor as authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive the 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 160 is a path through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 may include a connection terminal for connection with another device (e.g., earphone, external speaker 152b), a port for short-range communication (e.g., an infrared port (IrDA Port) A Bluetooth port, a wireless LAN port, or the like), or a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 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.

And a second camera 121b may be disposed on a rear surface of the terminal body. In this case, the second camera 121b has a photographing direction which is substantially opposite to that of the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix form. Such a camera can be named an 'array camera'. When the second camera 121b is configured as an array camera, images can be taken in various ways using a plurality of lenses, and a better quality image can be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 shines light toward the subject when the subject is photographed by the second camera 121b.

And a second sound output unit 152b may be additionally disposed in the terminal body. The second sound output unit 152b may implement the stereo function together with the first sound output unit 152a and may be used for implementing the phone mode speaker 152b.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be embedded in the terminal body or formed in the case. For example, an antenna constituting a part of the broadcast receiving module 111 (see FIG. 1A) may be configured to be able to be drawn out from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

The terminal body is provided with a power supply unit 190 (see FIG. 1A) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 built in the terminal body or detachable from the outside of the terminal body.

The battery 191 may be configured to receive power through a power cable connected to the interface unit 160. In addition, the battery 191 may be configured to be wirelessly chargeable through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

The rear cover 103 is configured to be coupled to the rear case 102 so as to cover the battery 191 to restrict the release of the battery 191 and to protect the battery 191 from external impact and foreign matter . When the battery 191 is detachably attached to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

The mobile terminal 100 may be provided with an accessory that protects the appearance or supports or expands the function of the mobile terminal 100. [ One example of such an accessory is a cover or pouch that covers or accommodates at least one side of the mobile terminal 100. [ The cover or pouch may be configured to interlock with the display unit 151 to expand the function of the mobile terminal 100. Another example of an accessory is a touch pen for supplementing or extending a touch input to the touch screen.

FIG. 2 is an exploded perspective view of a mobile terminal 100 according to the present invention and includes a display 151, a glass 151a, a window tape 151b, a main board 185, a rear case 102, an upper bracket 104, A lower bracket 105, a battery 191, and a rear cover 103 are shown. A display unit 151 is disposed on a front surface of the mobile terminal 100 and a glass 151a is provided to cover the electronic parts located around the display unit 151, Can be used.

The peripheral portion of the back surface of the glass 151a except for the portion where the image output from the display unit 151 is output is printed with the opaque ink to prevent the internal components from being seen. The adhesive tape 151b positioned on the back surface of the bezel can be used not only for bonding the display portion 151 and the glass 151a but also for bonding with the brackets 104 and 105 and the rear case 102. [

In general, a front case or a middle frame including a metal material is used to support the back surface of the display unit 151. However, in the present invention, the front case and the middle frame are omitted, 185 are positioned, and the rear surface covers the rear surface. The thickness of the mobile terminal 100 can be reduced by omitting the front case or the middle frame, and the number of members can be reduced.

Since the present invention uses only the rear case 102, the rear case 102 may include a side wall portion 1021 protruding in the front direction at the peripheral portion so as to cover the side surface of the mobile terminal 100 as well. The side wall portion 1021 is located on the side surfaces of the main substrate 185, the display portion 151, and the glass 151a.

The main board 185 is coupled to the front surface of the rear case 102. At this time, only the hooks are used instead of the screws for coupling the rear case 102 and the main board 185. [ By omitting the screw, the step of fastening the screw is omitted, and the number of members is reduced, thereby reducing the cost. The number and types of the hooks can be variously configured to increase the coupling force between the rear case 102 and the main board 185. [ The structure of the concrete hook will be described later.

The main board 185 of the present invention directly contacts the back surface of the display unit 151 to support the display unit 151. Therefore, the surface of the main substrate 185, which is in contact with the display portion 151, forms a flat surface.

The rear case 102 is formed with a battery insertion portion 191a into which a battery 191 is inserted and a portion corresponding to the battery insertion portion 191a is omitted so that the main board 185 can also be formed in a U- have. The battery 191 is exposed on the back surface of the display unit 151 through the battery inserting unit 191a and the bottom surface of the battery inserting unit 191a, And a battery cushion part 195 coupled to a back surface of the base part 151.

An upper portion of the main board 185 is provided with a driving chip, cameras 121a and 121b and proximity sensors 141 and an interface, an ear jack 165 and a speaker 152b. The upper and lower connecting portions 1855 of the main board 185 are disposed through one side of the battery inserting portion 191a. Since the main board 185 of the present invention plays the role of supporting the back surface of the display unit 151, the connection unit 1855 of the main board 185 may be connected to other parts A material having the same rigidity can be used.

The upper bracket 104 positioned above and below the display unit 151 for fixing the main board 185 and fixing the parts by mounting the parts mounted on the main board 185 and the glass 151a, And a lower bracket 105, as shown in FIG. The front surfaces of the upper bracket 104 and the lower bracket 105 are flush with the display unit 151 and engage with the rear surface of the glass 151a. The rear cover 103 can be coupled to the rear surface of the rear case 102 after the battery 191 is seated in the battery insertion portion 191a.

3 is a front view showing a state where the rear case 102 of the mobile terminal 100 of the present invention is coupled to the main board 185 and the pair of brackets 104 and 105. In the rear case 102, The substrate 185, the upper bracket 104, and the lower bracket 105 are coupled.

4 is a cross-sectional perspective view showing the A-A cross section of Fig. 3, showing the lower side wall portion 1021 and the interface portion 160 located at the lower end of the rear case 102. Fig. The lower side wall portion 1021 includes a through hole 102a formed at a position corresponding to an interface portion 160, an ear jack 165, and a microphone or the like.

The through hole 102a and the interface unit 160 may be formed in a manner such that the interface unit 160 is disposed on the upper portion of the interface unit 160. In this case, And is located at the upper side wall portion 1021 of the rear case 102.

5 is a view illustrating a coupling method of the rear case 102 and the main board 185 of the mobile terminal 100 according to the present invention. As shown in FIG. 5, the interface unit 160 and the ear jack 165, And the interface unit 160 and the ear jack 165 are inserted into the through hole 102a.

That is, the first hooks 201 are arranged in the front direction of the interface unit 160, and the first hooks 201 extend laterally so as to fit the lower portion of the main board 185 as well as the interface unit 160 . The first hook has no inclination in the insertion direction and has a protruding length so long that it can not be inserted by pushing in the direction from the front to the back. As shown in FIG. 4, the first hook slides from the upper direction to the lower direction, 1 hooks the interface portion 160, the ear jack 165 and the lower portion of the main board 185 to the hook 201 and then the main board 185 is coupled to the rear case 102 by pressing it in the backward direction.

The lower bracket 105 is attached to the main board 185 to fill the space between the first hook 201 and the lower end of the display unit 151 and to reinforce the coupling force of the main board 185, Combine in the front direction. The lower bracket 105 engages with the fourth hook 206 formed in the rear case. The fourth hook 206 will be described in more detail in the description of FIG. 10 with respect to the upper bracket 104. FIG.

The antenna pattern portion 117 positioned at the lower portion of the mobile terminal 100 is positioned at the upper or lower portion of the terminal and the antenna pattern portion 117, it is possible to secure a space for mounting the antenna disposed at the lower portion by connecting the lower bracket 105 to the lower end.

Since the left and right side wall portions 1021 of the rear case 102 are in direct contact with the display portion 151, the first hooks 201 protruding inwardly as in the lower side wall portion 1021 And the size of the second hook 202 located in the second sidewall 1021b is relatively small when engaged in the manner as shown in FIG. As shown in FIG. 2, a plurality of second hooks 202 are formed at various portions of the left and right side wall portions 1021 to reinforce the coupling force.

FIG. 6 is a cross-sectional perspective view illustrating a cross section taken along line B-B of FIG. 3, and FIG. 7 is a perspective view illustrating a second hook 202 of the mobile terminal 100 of the present invention. The second sidewall 1021b includes a first sidewall 1021a located on the side surface of the glass 151a, a second sidewall 1021b on which the main substrate 185 is located, And a glass mounting portion 1021c positioned between the glass mounting portions 1021a and 1021b and on which the glass 151a is mounted.

The second side wall 1021b of the glass mounting portion 1021c is a stepped portion protruding inwardly compared to the first side wall 1021a and formed by a thickness difference between the first side wall 1021a and the second side wall 1021b do. The main board receiving portion 1021f of the main board mounting portion 1021f protrudes from the side wall portion 1021 to guide the main board 185 to the main board mounting portion 1021f, 185 at a distance corresponding to the thickness of the second hooks 202. [ 6, the main board 185 is fitted between the second hook 202 and the main board receiving portion 1021f and is coupled to the rear case 102, Includes a slope in the front direction and a step in the back direction so that the substrate 185 can be easily inserted when the substrate 185 is pressed in the back direction from the front side.

That is, the hook protrudes from the second side wall 1021b surrounding the side of the display unit 151 located on the front surface of the main board 185 and the side of the display unit 151 corresponds to the second hook 202 The recess portion 1023 may be formed on the side wall portion 1021 so as to be spaced apart from the side of the display portion 151 as shown in FIG.

The second hook 202 may be disposed on the recess portion 1023 and the main board 185 may have a hook protrusion 186 protruding corresponding to the recess portion 1023. [ The hook protrusion 186 is inserted into the recess portion 1023 and is caught by the stepped portion of the second hook 202 to fix the main board 185 to the rear case 102. [

That is, the left and right side wall portions 1021 include a first side wall 1021a positioned on the side surface of the glass 151a, a glass seating portion 1021c on which the glass 151a is seated, A second side wall 1021b, a second hook 202 and a third side wall 1021d covering a side surface of the main board 185 and a main board seating portion 1021f on which the main board 185 is seated.

8 is a cross-sectional perspective view showing a cross section taken along the line C-C in FIG. 3, and FIG. 9 is a perspective view showing a state in which the SMT hook 203 in FIG. 8 is mounted on the main board 185. The battery inserting portion 191a has a partition wall 191b which surrounds the battery 191. [ The partition wall 191b prevents the components mounted on the main board 185 from being exposed to the outside and guides the battery 191 to be seated at the correct position.

The first hooks 201 and the second hooks 202 for fastening the main board 185 to the rear case 102 are located on the outer side of the main board 185 and require a fixing structure on the inner side. The third hook 204 may be formed on the main board 185 to be fastened to the main board 185. The side wall part 1021 may form a first hook 201 or a second hook 202 which protrudes further in the front direction than the front surface of the main board 185 and is fastened to the front surface of the main board 185 The partition wall 191b of the battery inserting portion 191a has the same height as the front surface of the main board 185 so that the third hook 204 can be positioned in the backward direction of the second hook 202. [

8 and 9, the SMT hook 203 may be mounted at a position adjacent to the partition wall 191b in the back surface direction of the main board 185, have.

The SMT hook 203 fixes a member having rigidity such as SUS to the main board 185 by a SMT (Surface Mounting Technology) method as a chip is mounted on the main board 185. The SMT hook 203 includes a seat portion 2031, a fixing portion 2032, an extension portion 2033, and an opening portion 2034. [ The mounting portion 2031 is seated on the back surface of the main board 185 and the fixing portion 2032 is protruded in the front direction from the seating portion 2031 and inserted into the main board 185. The fixing portion 2032 may include at least one pair of left and right portions so that the SMT hook 203 is stably fixed to the main board 185.

The extended portion 2033 extends in the backward direction from the seating portion 2031 so as to face the partition wall 191b. The opening 2034 is partially cut into the extended portion 2033 as shown in FIG. 9 and is fastened to the third hook 204 protruded from the partition wall 191b in the opening 2034. Since the end of the opening 2034 of the SMT hook 203 is located on the back side of the main board 185, it can be fastened to the third hook 204 formed on the partition wall 191b which is lower in height than the side wall part 1021 have. Like the second hook 202, the third hook 204 includes an inclined surface in the front direction so as to facilitate insertion, and a step may be formed in the back direction. And includes a curved surface 2036 at the end of the extended portion 2033 so that the SMT hook 203 is naturally inserted into the stepped portion of the third hook 204.

The third hook 204 and the end portion of the extended portion 2033 are abutted to each other while the main board 185 is pushed in the back direction from the front and joined to the rear case 102. When the extended portion 2033 is pushed, 2034 and the third hook 204 can not be fastened and the rib structure 2034 may be further provided to reinforce the rigidity of the extension portion 2033. [

The rib structure 2034 is bent twice at the end of the extended portion 2033 and abuts against the seating portion 2031 so that the rib structure 2034 may be bent even when a force pushing the extended portion 2033 is applied, Can support. The rib structure 2034 is not limited in the structure surface shape that can prevent the extension portion 2033 from being pushed in addition to the structure shown in Fig.

10 is a perspective view illustrating a method of coupling a bracket to a rear case 102 of the mobile terminal 100 of the present invention, and FIG. 11 is a cross-sectional view taken along line D-D of FIG.

Since the lower portion of the mobile terminal 100 is fixed using the first hook 201 but the opposite side is naturally connected from the front side to the back side, the upper bracket 104 is used to fix the upper portion.

The upper bracket 104 is formed with an opening 104a corresponding to the front camera 121a and the proximity sensor 141 that are opened in the front direction and the camera 121a, 121b and the proximity sensor 141 from the front side. That is, by omitting the conventional front case, the upper bracket 104 replaces the role of supporting the components arranged on the front side. And performs the cap rubber function of the proximity sensor 141 on the front face of the portion where the proximity sensor 141 is located.

The bracket hook 205 is protruded and fastened to the fourth hook 206 formed on the upper side wall portion 1021 of the rear case 102 as shown in FIG.

In order to minimize the thickness of the rear camera 121b, the main board 185 may be cut to form the camera mount portion 1851. In this case, in order to support the rear camera 121b on the front surface As shown in FIG. 10, a camera support portion 1042 supporting the rear surface of the rear camera 121b may be extended from the upper bracket 104. FIG. The height of the camera supporting portion 1042 and the height of the main board 185 are adjusted to be equal to each other so that the back surface of the display portion 151 has a flat supporting structure as shown in FIG. .

Referring to Fig. 11, the receiver 152a may further include an antenna carrier 118 coupled to the rear surface of the rear case 102 and covering the rear surface of the receiver 152a. The antenna carrier 118 is provided with an antenna radiating portion located at an upper portion thereof and is formed of resin injection molding, and the antenna radiating portion can be formed by a printing method. That is, the antenna carrier 118 can be coupled at the rear surface of the rear case 102 to provide space for mounting the antenna while supporting the receiver 152a.

12 and 13 are views for explaining the resonance space of the speaker 152b. Unlike the receiver 152a, the speaker 152b mounted on the lower portion of the rear case 102 of the present invention requires a resonance space because the sound must spread far away. The larger the resonance space, the better the sound quality. However, since the size of the mobile terminal 100 is limited, it is necessary to utilize a space that is not used as much as possible.

12, the first resonance space 1521 is a space around which the speaker 152b module is seated, and the second resonance space 1522 is a space surrounded by the two resonance spaces 1521, A space next to the battery inserting portion 191a is used. One side of the left and right clearance spaces of the battery inserting portion 191a is provided with a connection portion 2855 of the main board 185 connecting the upper and lower substrates, and the resonance space can be secured by utilizing the space on the other side.

A hole 1523 is formed between the first resonance space 1521 and the second resonance space 1522 to connect the first resonance space 1521 and the second resonance space 1522 as shown in an enlarged view of FIG. To be connected. A plurality of ribs 1524 may be formed in the second resonance space 1522 as shown in FIG. 12 for the rigidity in the longitudinal direction.

The front portion can be closed using adhesive pads 1525 and 1526 to seal the first resonance space 1521 and the second housing space. An adhesive pad 1526 that engages the first resonance space 1521 forms a hole for disposing a connector for connecting the main substrate 185 and the speaker 152b and seats the main substrate 185 instead And may block the open hole portion of the adhesive pad 1526 attached to the first resonant space 1521. The bonding pad 1526 may be in close contact with the main substrate 185 using a double-sided tape to form a closed resonance space.

As described above, the mobile terminal according to the present invention can reduce the thickness of the mobile terminal and reduce the number of members by omitting the front case. By using only the hooks and omitting the screw, the joint structure exposed to the outside can be minimized.

The foregoing detailed description should not be construed in all aspects as limiting and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

100: mobile terminal 102: rear case
1021: side wall portion 1021a: first side wall
1201b: second side wall 1021c: glass seating part
1021d: third side wall 1021f: main board seating portion
103: rear cover 104: upper bracket
105: lower bracket 110: wireless communication unit
117: antenna pattern part 118: antenna carrier
120: input units 121a and 121b:
140: sensing unit 150: output unit
151: Display part 151a: Glass
152a: Receiver 152b: Speaker
1521: first resonance space 1522: second resonance space
1525, 1526: Adhesive pad 160: Interface part
165: ear jack 170: memory
180: control unit 185: main substrate
1851: camera mount part 1855: connection part
186: hook projection 1023: recessed portion
190: Power supply unit 191: Battery
191a: Battery insertion part 191b:
201: first hook 202: second hook
203: SMT hook 204: Third hook
205: Bracket hook 206: Fourth hook

Claims (17)

A rear case including a battery insertion portion opened corresponding to the battery size and a side wall portion protruding from the periphery in the front direction;
A main board coupled to a hook formed on the rear case;
A pair of brackets coupled to an upper portion and a lower portion of a front surface of the rear case to fix the main board;
A display unit disposed between the pair of brackets;
A glass covering a front surface of the display unit and a front surface of the pair of brackets;
A battery secured to the battery insertion portion; And
And a rear cover coupled to a rear surface of the rear case. The method according to claim 1,
An interface unit mounted on one end of the main board; And
Further comprising a through hole formed in the side wall portion and into which the interface portion is inserted,
The hook
And a first hook protruding from an upper portion of the through hole of the side wall portion. 3. The method of claim 2,
A lower bracket coupled to a lower portion of the mobile terminal among the brackets; and the first hooks forming the same plane,
Further comprising an antenna pattern unit coupled to a front surface of the lower bracket and the first hook. The method according to claim 1,
The hook
And a second hook protruding inwardly from the side wall part and hooking an end of the main board. 5. The method of claim 4,
The side-
A first sidewall covering a side surface of the glass;
A second side wall covering a side surface of the display unit; And
And a glass seating part located between the first side wall and the second side wall and on which the glass is seated,
And the second hook is located on the second side wall. 6. The method of claim 5,
The second sidewall is recessed in the inward direction to include a thin recess portion, the second hook is located in the recess portion,
Wherein the main board includes a hook protrusion protruding in a shape corresponding to the recess portion and engaged with the second hook. The method according to claim 1,
Wherein the main board further includes an SMT hook member mounted on a rear surface of the main board adjacent to the battery inserting portion,
The hook
Further comprising a third hook protruding in a direction opposite to the battery inserting portion at a battery inserting portion bulkhead located around the battery inserting portion, the third hook being engaged with the SMT hook member. 8. The method of claim 7,
Wherein a front surface of the main board and an end of the battery insertion portion barrier rib form the same plane. 8. The method of claim 7,
The SMT hook member
A seating part that is seated on a back surface of the main board;
A fixing part protruded from the seating part and inserted into the main board;
An extension extending in the back direction from the seating part and facing the battery compartment wall;
And an opening formed in the extending portion and receiving the third hook. 10. The method of claim 9,
Further comprising a rib structure for supporting the extension portion so that the position of the extension portion is not deformed. 10. The method of claim 9,
And the end of the extended portion includes a curved surface. The method according to claim 1,
A camera seating part formed by cutting an upper part of the main board;
Further comprising: a rear camera module inserted into the camera seat portion and facing the rear direction,
Wherein the front face of the main board and the rear face camera module are flush with each other. 13. The method of claim 12,
Wherein the upper bracket coupled to the upper portion of the mobile terminal fixes the rear camera. The method according to claim 1,
Further comprising a cushion interposed between the battery and the display unit. The method according to claim 1,
A receiver coupled to an upper rear surface of the rear case; And
Further comprising an antenna carrier covering the receiver and coupled to an upper portion of the rear surface of the rear case. The method according to claim 1,
The rear case
A first resonance space located below the battery insertion portion and into which a speaker is inserted;
A second resonance space located at one side of the battery insertion portion; And
And a passage connecting the first resonance space and the second resonance space. 17. The method of claim 16,
The front surface of the first resonance space covers the first adhesive pad and the main substrate,
And a front surface of the second resonance space is covered by a second adhesive pad.

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