KR20160006910A - Mobile terminal housing and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a housing of a mobile terminal and a manufacturing method thereof. The housing includes: a first housing including a metal material and a side surface exposed to the outside; a slit formed by dropping part of the side surface of the first housing; a joint piece inserted into a gap of the slit; and a second housing which is processed insert injection molding so as to come in contact with a partial surface of the joint piece and part of the first housing, thereby simplifying a manufacturing process and reducing a unit cost while keeping an effect of a metal antenna method.

Description

TECHNICAL FIELD [0001] The present invention relates to a housing of a mobile terminal and a method of manufacturing the same. [0002] MOBILE TERMINAL HOUSING AND METHOD FOR MANUFACTURING THE SAME [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal housing for simplifying a manufacturing process to optimize a unit price and maintaining a quality of a housing, and a manufacturing method thereof.

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. .

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

Meanwhile, the outer housing of the mobile terminal may be made of polycarbonate or metal. If the outer housing is made of polycarbonate, injection molding is usually used to pour the material into the mold. When the outer housing is made of metal, it is manufactured by NC machining of a part of the body metal that has been forged.

In this case, when a metal is used as the outer housing, a metal antenna can be used as an antenna for amplifying a data signal. In order to apply such a metal antenna technology, at least one slit, which is a break section, is required in the metal outer housing. Usually, the space of this slit is filled with polycarbonate through insert injection. In order to facilitate the injection of the insert, an NMT process, which is an injection pre-process, is performed. Thereafter, the entire outer surface is subjected to CNC machining again, and a finishing step is performed.

However, in this case, CNC machining is included more than 2 times, which makes processing difficult and expensive, and preprocessing for bonding force is required for insert injection.

In order to solve this problem, it is possible to consider the process of forming the housing through the metal casting process. Also in this case, it is necessary to form a slit of the metal housing for the role of the antenna, and this slit must be filled with insert injected polycarbonate. When the insert is injected into this portion, there is a high possibility of being out of the seamless housing such as ambiguity of the boundary portion between the metal material and the polycarbonate, spreading of the boundary portion, addition of insert inserts, and the like.

The present invention solves the above-mentioned problems and provides a mobile terminal housing including a border of a smooth metal material portion, a rim of a synthetic resin portion, and a boundary between a metal material portion and a synthetic resin portion in the outer appearance of the outer housing of the mobile terminal, and a manufacturing method thereof The purpose of that is to do.

According to an aspect of the present invention, there is provided an electronic apparatus including a first housing including a metallic material and including a side exposed to the outside, a slit formed by omitting a side portion of the first housing, And a second housing insert-injected so as to include a joint piece mating with the joint piece to be in contact with the joint piece and a first housing mating surface in contact with the first housing. Thereby providing a mobile terminal housing.

According to another aspect of the present invention, there is provided a method of manufacturing a mobile terminal, comprising the steps of: forming a joint piece on a surface of a mobile terminal, the joint piece including a polycarbonate and the second housing being a polycarbonate and a glass fiber composite material; Thereby providing a housing.

Effects of the mobile terminal and the control method according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, it is advantageous to simplify the manufacturing process and to reduce the cost while preventing the above-described casting of the slit section and the collapse of the boundary line, the occurrence, extension, have.

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.

FIG. 1 is a conceptual view of an example of a mobile terminal including a terminal housing according to the present invention, viewed from different directions.
2A and 2B are a front view and a front perspective view of an example of a mobile terminal rear housing according to the present invention.
3 is a front view sequentially showing an embodiment of a manufacturing process of a conventional mobile terminal housing according to the present invention.
4 is a front view sequentially showing an embodiment of a manufacturing process of a mobile terminal housing according to the present invention.
FIG. 5 is a front perspective view of one embodiment of a mobile terminal rear housing and a joint piece before and after being combined with the present invention. FIG.
6 is a front perspective view of another embodiment of a mobile terminal rear housing and a joint piece in accordance with the present invention.
7 is a view showing a state in which a second housing is formed by insert injection after the joint piece is coupled to the first housing in the embodiment related to the present invention.

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.

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.

FIG. 1 is a conceptual view of an example of a mobile terminal including a terminal housing according to the present invention, viewed from different directions.

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.

The mobile terminal 100 includes a casing that forms an appearance, for example, a frame, a housing, a cover, and the like. When the case is a housing, as shown, the mobile terminal 100 may include a front housing 101 and a rear housing 102. Various electronic components are disposed in the inner space formed by the combination of the front housing 101 and the rear housing 102. [ At least one middle case may be additionally disposed between the front housing 101 and the rear housing 102.

A display unit 151 is disposed on a front surface of the terminal body to output information. The window 151a of the display unit 151 may be mounted on the front housing 101 to form a front surface of the terminal body together with the front housing 101. [

A rear cover 103 for covering the mounted electronic component can be detachably coupled to the rear housing 102. Therefore, when the rear cover 103 is detached from the rear housing 102, the electronic parts mounted on the rear housing 102 are exposed to the outside.

As shown, when the rear cover 103 is coupled to the rear housing 102, a side portion of the rear housing 102 can be exposed. In some cases, the rear housing 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 101, 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 unibody mobile terminal 100 in which 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. For example, the waterproof portion is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102, or between the rear case 102 and the rear cover 103, And a waterproof member for sealing the inside space of the oven.

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.

1 (a) and 1 (b), a display unit 151, a first sound output unit 152a, a proximity sensor 141, an illuminance sensor 142 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 the rear surface of the terminal body will be described as an example.

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, and in this case, the touch screen can function as a user input unit. 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 loud speaker for outputting various alarm sounds or multimedia playback sounds. ). ≪ / RTI >

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 an assembly gap (for example, a gap between the window 151a and the front case 101) 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 operated 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 may 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 (for example, an earphone or an external speaker), a port for short-range communication (for example, 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 a stereo function together with the first sound output unit 152a and may be used for implementing a speakerphone mode in a call.

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 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 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 housing 102 to cover the battery 191 to limit the detachment 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 housing 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.

2A is a front perspective view of a mobile terminal rear housing 102 in accordance with the present invention.

For convenience of explanation, the front direction of the mobile terminal is defined as Z direction, the direction of the top portion is defined as Y direction when the mobile terminal is viewed from the front, and the right direction is defined as X direction when the mobile terminal is viewed from the front side with respect to the rear housing 102 do.

2B is a front view of the mobile terminal rear housing 102 in connection with the present invention.

The side surface of the mobile terminal housing may be integrally connected to the front housing 101 (see FIG. 1) or integrally connected to the rear housing 102. In the present embodiment, it is assumed that it is integrally connected to the rear housing 102.

The rear housing 102 of the embodiment of the present invention may be constituted by a first housing 1021 made of a metal material and a second housing 1022 made of a synthetic resin material, which will be described later in detail. The mobile terminal 100 (see FIG. 1) must include an antenna that amplifies a signal of data exchanged with the base station, and the metal material itself can serve as an antenna. This is called a metal antenna method. A part of the outer part of the metal is used as an extension line of the antenna pattern, but the shape is different according to the required band. In order to achieve the object of the metal antenna method, most of the first housing 1021 is made of a metal material, and a slit 1023 formed by omitting a side portion may exist. On the other hand, it is necessary to fill the empty space of the first housing 1021 including the slit 1023 and shut off from the outside, and this can be filled by the second housing 1022 which is an insert injection.

The mobile terminal first housing 1021 can be formed in a basic form through a step of casting through a mold. A typical example is ALCD12. The casting made through casting is made into a basic shape by processing Gate NC. This first housing 1021 can be cast into a single piece of the member or, if desired, cast into two separate pieces of the member.

3 is a front view sequentially showing an embodiment of a manufacturing process of a conventional mobile terminal housing according to the present invention.

As described above, in the case of an outer housing manufacturing process which is produced by forging and NC (Numerical Control) processing using a whole body material, the metal member 300 that has undergone the forging process as shown in FIG. 3 (a) A cutting process is performed on a part 310 of the area where insert injection is required.

Before the injection of the polycarbonate material, injection pretreatment is performed on the area 320 necessary for allowing the injection product 330 to be easily bonded to the forged metal member 300. (FIG. 3 (b)) After the injection preprocessing process, a polycarbonate material 330 is insert injected. (FIG. 3 (c)) After the insert injection process is completed, the body part 340 outside the boundary 350 of the housing required through the last NC numerical control process is cut.

In this case, the process is complicated and costly because it involves two NC processes.

Hereinafter, a housing of a mobile terminal based on a die casting process using the casting material of the present invention and a manufacturing method thereof will be described.

4 is a front view sequentially showing an embodiment of a manufacturing process of a mobile terminal housing according to the present invention.

In the case of the present invention in which insert injection (see Fig. 4 (c)) is performed on the already completed metal outer housing (see Fig. 4 (a)), The boundary between the outer housing and the insert insert may not be smooth or the insert may be overlapped or lacked due to the process characteristics of the insert insert.

To overcome this additional problem, a previously injection molded joint piece (see FIG. 4 (b)) is applied to the already finished metal outer housing

Therefore, a housing comprising a first housing 1021, which is a metal casting material, a joint injection, and a second housing 1022, which is an insert injection, according to the present invention will be described below.

5 is a front perspective view of one embodiment of the mobile terminal rear housing 102 and the joint piece 104 (FIG. 5A) and combined embodiment (FIG. 5B) in accordance with the present invention.

A slit 1023 can be formed by omitting a part of the side surface of the first housing 1021 and the metal antenna can be used as the slit 1023. The number, size, and position of the slits 1021 may be changed according to the order. Hereinafter, the two slits 1023 generated on the right side and the bottom side will be referred to. (See Fig. 4)

And is cut off from the outside by the joint piece 104 sandwiched between the slits 1023. Such a joint piece 104 should be made of a non-metallic material. A typical material is polycarbonate. Laser processing may be applied to increase the bonding force in the process of joining the joint pieces 104 generated in the separate process to the first housing 1021.

The auxiliary abutment surface 108 continues to the slit 1023 and forms a first depression. The joint piece 104 has a joint surface to be fitted to the outer exposed surface 105 exposed to the outside of the slit 1023, the auxiliary joint surface 108 and the slit 1023, And includes an overmolding surface that is tangent. The joint piece 104 of the fitting surface 106 can be coupled to the first housing 1021 by the slit fitting surface 1061, but the coupling force of the joint piece 104 may be weak. Therefore, the separation can be minimized by providing the auxiliary abutment surface 1062 to be fitted to the auxiliary abutment surface 108 of the first housing 1021.

After the fitting of the joint piece 104, a second housing 1022 (see Fig. 2B) of non-metallic material by insert injection can be produced. The second housing includes a joint piece mating surface in contact with the joint piece (104) and a first housing mating surface in contact with the first housing. The joint surface of the second housing 1022 (see FIG. 2B) and the joint piece 104 is firmly engaged by insert injection. The joint piece 104 may be coupled to the slit 1023 located in the side X direction (see FIG. 2A) of the first housing 1021.

The outer exposed surface 105 may form a continuous surface with the side surface of the first housing. The over-molding surface (107) has a first layer surface (1071) joined to the fitting surface. There may be a stepped portion protruding from the first layer surface 1071 toward the terminal front surface. The step includes a second layer surface 1072. The width of the second layer surface 1072 may be equal to or greater than the width of the slit 1023. The width of the second layer surface 1072 is equal to or greater than the width of the slit 1023 in a space where the joint piece 104 is to be mounted. As the surface area increases, the surface area of the second housing 1022 in contact with the second housing 1022 becomes wider, so that a more rigid connection can be achieved.

6 is a front perspective view of another embodiment of a mobile terminal rear housing 102 and a joint piece 104 in accordance with the present invention.

There may be no space for the auxiliary abutment surface 108 having the first depressed portion as in the embodiment shown in FIG. And an auxiliary pin 109 protruding near the slit 1023. The auxiliary pin 109 may have one or more than one. The joint piece 104 has an external exposed surface 105 exposed through the slit 1023 of the first housing 1021 to the outside and a fitting surface 1054 fitted to the auxiliary pin 109 and the slit 1023. [ And an overmolding surface 107 that includes a first layer surface 1071 that contacts the joint surface of the second housing 1022 and which is in contact with the fitting surface 106. The auxiliary pin 109, It is possible to prevent the flow of the joint piece 104 by holding the auxiliary pin engagement surface 1063 which is a part of the fitting surface 106. [

The result of the combined shape of the first housing 1021 and the joint piece 104 should have a shape that secures the flow passage so that the flow of the injection material can be smooth during the insert injection process at a later stage.

The injection molded joint piece 104 may be coupled in the Z direction (see FIG. 2A) to the first housing 1021 cast with a lump of member, or, if such engagement is difficult, May be coupled to one of the first housings 1021 casted to the first housing 1021, and then sequentially joined to the remaining one casting.

7 is a view showing a state where a second housing is formed by insert injection after the joint piece is coupled to the first housing in the embodiment related to the present invention.

The joint piece 104 covers the portion of the first engaging portion or the second engaging portion of the joint piece 104 and a part of the overmolded portion after the joint piece 104 is fitted to the first housing 1021, An insert injection process can be performed on the second housing covering a part of the area of the first housing 1021. [

This second housing 1022 must be non-metallic, and in particular polycarbonate and glass fiber composite.

Through the insert injection, the joint piece 104 and the second housing 1022 can be integrally joined and fixed. The boundaries of the two regions can be transformed into complex materials due to heat, but they can still act as non-metallic materials, as mentioned in the background art.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

100: mobile terminal 101: front housing
102: rear housing 1021: first housing
1022: second housing 1023: slit
103: rear cover 104: joint piece
105: Exposed exposed surface 106:
1061: Slit-in face 1062: Auxiliary face-in-side face
1063: pin coupling surface 107: overmolding surface
1071: first layer surface 1072: second layer surface
108: auxiliary abutment surface 109: auxiliary pin
110: wireless communication unit 120: input unit
140: sensing unit 150: output unit
151: display unit 160: interface unit
170: memory 180:
190: Power supply unit 300: Forged metal member
320: injection preprocessing unit 330:
340: Outer boundary of the housing body part 350: Boundary of the housing

Claims (6)

A first housing including a metallic material and including an exposed side;
A slit formed by omitting a side portion of the first housing;
A joint piece to be sandwiched between the slits; And
And a second housing insert-injected to include a joint piece mating surface contacting the joint piece and a first housing mating surface contacting the first housing. The method according to claim 1,
Wherein the joint piece comprises a polycarbonate,
Wherein the second housing is made of polycarbonate and a glass fiber composite material. The method according to claim 1,
Wherein the first housing includes an auxiliary abutment surface that continues to the slit and forms a first depression,
The joint piece
An outer exposed surface exposed to the outside through the slit of the first housing;
A fitting surface to be fitted to the auxiliary bonding surface and the slit; And
And an overmolding surface contacting the joint piece coupling surface of the second housing. The method of claim 3,
Wherein the outer exposed surface forms a continuous surface with a side surface of the first housing,
Wherein the overmolded surface comprises:
And a second layer surface present on the stepped surface protruding from the first layer surface,
And the width of the second layer surface is not less than the width of the slit. The method according to claim 1,
Wherein the first housing includes at least one protruding auxiliary pin,
The joint piece
An outer exposed surface exposed to the outside of the slit of the first housing;
A fitting surface to be fitted to the auxiliary pin and the slit; And
And an overmolding surface that includes a first layer surface abutting the joint surface of the second housing and contacting the fitting surface. A casting step of casting a first housing including a slit exposed on a side surface thereof and being a metal material;
Assembling at least one or more Joint Pieces into a slit of the first housing; And
And an insert injection molding step for molding a second housing covering a part of the joint piece and a part of the first housing.

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