KR20100119439A - Portable terminal - Google Patents

Abstract

PURPOSE: A portable terminal is provided to restrict rotation of a link member, thereby restricting relative slide movement of the first and second bodies. CONSTITUTION: The first and second bodies can slide each other. The first and second link members(151,152) are connected to the first and second bodies to enable rotation of the first and second link members. A spring(153) is installed between the other end of the first link member and the other end of the second link member. A stopper(160) is formed in the first body. The stopper restricts relative slide movement of the first and second bodies by restricting rotation of the first link member at a predetermined rotation angle.

Description

Mobile terminal {PORTABLE TERMINAL}

The present invention relates to a slide type portable terminal having a structure capable of limiting relative slide movement.

A portable terminal is a portable device that is portable and has one or more functions such as voice and video calling, information input and output, and data storage.

As the functions are diversified, for example, the mobile terminal has complex functions such as taking a picture or video, playing a music or video file, playing a game, and receiving a broadcast, and is realized in the form of a comprehensive multimedia player. It is becoming.

Many new attempts are being applied to these multimedia devices in terms of hardware or software to implement complex functions. For example, a user interface environment is provided for a user to easily and conveniently search for or select a function.

In addition, the portable terminal is regarded as a personal portable product for expressing its individuality, and various designs are required, and the portable terminal has various forms such as a bar type, a folder type, a slide type, and a swivel type.

Among these various types, the slide type is able to extend or shorten the length of the portable terminal by a simple operation, thereby satisfying both the portability and the convenience of the call.

The present invention is to provide a stopping structure of a new type with improved reliability in the stopping structure for limiting the relative slide movement of the body of the slide-type portable terminal.

The present invention for realizing the above object is provided with a first and a second body that is slidably connected to each other, and one end that is rotatably connected to the first and second body, respectively, and are connected to each other in a relatively movable A spring mounted between the first and second link members and the other end of the first link member and the other end of the second link member to generate an elastic force between the first and second link members, and to the first body. The present invention discloses a portable terminal including a stopper formed at the predetermined rotation angle to limit rotation of the first link member to limit relative slide movement of the first and second bodies.

The stopper is formed on a rotation path of the first link member, and may be configured to have a side wall on which the first link member is caught. In addition, the stopper may be formed on one side of the rotation point of the first link member.

The stopper may include a first stopper in which one side surface of the first link member is contacted in a closed state, and a second stopper in contact with the other side surface of the first link member in an open state.

The present invention provides a new structure of stopping structure that limits the rotation of the link member of the spring module to limit relative slide movement of the first and second bodies.

In addition, the present invention is formed by forming a stopper around the rotation point of the link member to minimize the impact applied to the stopper during the stopping, so that the stopper is damaged by the impact due to repeated stopping operation or falling of the terminal in the open state Can be prevented.

EMBODIMENT OF THE INVENTION Hereinafter, the portable terminal which concerns on this invention is demonstrated in detail with reference to drawings.

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

The portable terminal of the present invention includes a first body 110 and a second body 120 configured to slide in at least one direction on the first body 110.

A state in which the first body 110 is disposed to overlap the second body 120 may be referred to as a closed configuration, and as shown in the drawing, the first body 110 may be referred to as the second body 120. The exposed state of at least a portion of the N may be referred to as an open configuration.

Although the mobile terminal 100 operates mainly in the standby mode in the closed state, the standby mode may be released by a user's operation. In addition, the portable terminal 100 operates mainly in a call mode or the like in an open state, but may be switched to a standby mode by a user's operation or a lapse of a predetermined time.

The case (casing, housing, cover, etc.) forming the exterior of the first body 110 is formed by the front case 11 and the rear case 12. Various electronic components are embedded in the space formed by the front case 110 and the rear case 120.

At least one intermediate case may be further disposed between the front case 110 and the rear case 120.

The cases may be formed by injecting synthetic resin or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display body 113, the first sound output unit 114, the first image input unit 115, or the first manipulation unit 116 may be disposed on the first body 110, specifically, the front case 111.

The display unit 113 includes a liquid crystal display (LCD) module, an organic light emitting diodes (OLED) module, and the like, which visually express information, and the display unit 113 further includes a touch screen. The input of information may also be enabled.

The first sound output unit 114 may be implemented in the form of a receiver or a speaker, and the first image input unit 115 may be in the form of a camera module for capturing an image or a video for a user. Can be implemented.

The first manipulation unit 116 receives a command for controlling the operation of the portable terminal according to an embodiment of the present invention.

Like the first body 110, the front case 121 and the rear case 122 may form a case of the second body 120. The second manipulator 123 may be disposed on the front surface of the second body 120, specifically, the front case 121.

The third manipulation unit 124, the sound input unit 125, and the interface 126 may be disposed on at least one of the front case 121 and the rear case 122.

The first to third manipulation units 116, 123, and 124 may be collectively referred to as manipulating portions, and may be employed in any manner as long as the user is tactile in a tactile manner.

For example, the operation unit may be implemented as a dome switch or a touch pad that may receive a command or information by a user's push or touch operation, or may be implemented by a wheel or jog method that rotates a key, or a method such as a joystick. Can be.

In the functional aspect, the first operation unit 116 is for inputting a command such as start, end, scroll, etc., and the second operation unit 123 is for inputting numbers, letters, symbols, and the like. In addition, the third manipulation unit 124 may operate as a hot-key that performs a special function such as activation of the first image input unit 15.

The sound input unit 125 may be implemented in the form of, for example, a microphone to receive a user's voice, other sounds, and the like.

The interface 126 serves as a passage for allowing a portable terminal related to the present invention to exchange data with an external device. For example, the interface 126 may be wired or wirelessly, and may be a port for short-range communication (for example, an IRDA port, a Bluetooth port, a wireless LAN port, etc.), or At least one of the power supply terminals for supplying power to the portable terminal.

The interface 126 may be a card socket for receiving an external card such as a subscriber identification module (SIM) or a user identity module (UIM), a memory card for storing information.

On the rear case 122 side, a power supply unit 127 for supplying power to the portable terminal is mounted. The power supply unit 127 may be detachably coupled for charging, for example, as a rechargeable battery.

2 is a rear perspective view of the portable terminal of FIG. 1.

Referring to FIG. 2, a second image input unit 128 may be additionally mounted on the rear surface of the rear case 122 of the second body 120. The second image input unit 128 may be a camera having a photographing direction substantially opposite to that of the first image input unit 15 (see FIG. 1) and having different pixels from the first image input unit 115.

For example, the first image input unit 115 has a low pixel so that it is easy to take a picture of a user and transmit it to a counterpart in a video call, and the second image input unit 128 immediately photographs a general subject. It is preferable to have a high pixel because it is not transmitted in many cases.

The flash 129 and the mirror unit 130 are further disposed adjacent to the second image input unit 128. The flash 129 shines light toward the subject when the subject is photographed by the second image input unit 128. The mirror unit 130 allows the user to see his / her own face or the like when the user wants to photograph himself (self-photographing) using the second image input unit 128.

The second sound output unit 131 may be further disposed in the rear case 122. The second sound output unit 131 may implement a stereo function together with the first sound output unit 114 (refer to FIG. 1), and may be used for a call in the speakerphone mode.

In addition, an antenna 132 for receiving a broadcast signal may be disposed on one side of the rear case 122 in addition to an antenna for a call or the like. The antenna 132 may be installed to be pulled out of the second body 120.

A portion of the slide module 133 that slidably couples the first body 110 and the second body 120 is disposed on the rear case 112 side of the first body 110.

The other part of the slide module 133 may be disposed on the front case 121 side of the second body 120 and may not be exposed to the outside as shown in the drawing.

In the above description, the second image input unit 128 and the like have been described as being disposed in the second body 120. However, the present invention is not limited thereto. For example, at least one or more of the components 128 to 132 described as disposed on the rear case 122, such as the second image input unit 128, may be disposed on the first body 110, mainly the rear case 112. It is also possible to be mounted. If so, there is an advantage that the configuration (s) disposed on the rear case 112 in the closed state are protected by the second body 120. In addition, even if the second image input unit 128 is not separately provided, the first image input unit 115 may be rotatably configured to allow shooting up to the shooting direction of the second image input unit 128.

3 is an exploded perspective view of the portable terminal illustrated in FIGS. 1 and 2.

Referring to FIG. 3, a slide module 140 is slidably connected between the first body 110 and the second body 120 between the first body 110 and the second body 120.

The slide module 140 may include a fixing plate 141 and a moving plate 142 slidably connected to each other.

The fixing plate 141 is fixed to the rear surface of the first body 110, specifically, the rear case 112. The moving plate 142 is fixed to the second body 120, specifically, the front case 121. The mounting groove 135 may be formed at one side of the second manipulation unit 123, and the moving plate 142 may be fixed on the mounting groove 135.

The fixing plate 141 and the moving plate 142 may be formed of a metal material, such as steel or stainless steel, and may be fastened to the first and second bodies 110 and 120 by a bolt fastening method or adhered by an adhesive. .

On the fixing plate 141, a through hole 143 through which the flexible circuit board for electrically connecting the first and second bodies may be formed. The moving plate 142 has a smaller size than the fixing plate 141 in consideration of the mounting space of the mounting parts such as the second manipulation unit 123.

Both sides of the moving plate 142 are formed with grooves (slides) slide rails (142a). And, on both sides of the fixing plate 141 is inserted into the slide rail 142a is formed with an insertion portion (141a) for movement. Insertion portion 141 may be formed to form a step on one surface of the fixing plate 141, the slide rail 142a is formed to surround the insertion portion (141a). That is, the slide rail 142a forms a space (rail groove) through which the insertion part 141a is inserted and moved.

4 is a rear perspective view of the slide module shown in FIG. 3.

Referring to FIG. 4, a spring module 150 is mounted between the fixing plate 141 and the moving plate 142. The spring module 150 generates an elastic force between the first and second bodies 110 and 120 to move the first and second bodies 110 and 120 semi-automatically. For example, when the user relatively moves the first and second bodies 110 and 120 in a closed state (open state) for a predetermined period or more, the first and second bodies 110 and 120 are generated in the spring module 150 thereafter. The slide force is automatically moved by the elastic force can be switched to the open state (closed state).

The spring module 150 includes a first link member 151 rotatably connected to the fixing plate 141, a second link member 152 rotatably connected to the moving plate 142, and first and first materials. It includes a spring 153 for generating an elastic force between the two link members (151, 152).

One end of the first link member 151 is rotatably connected to the fixing plate 141 by the first rotation point P1. A first spring support 151a is formed at the other end of the first link member 151, and the first spring support 151a may have a width of a predetermined length or more to support the plurality of springs 153.

One end of the second link member 152 is rotatably connected to the moving plate 142 by the second rotation point P2. The first and second rotation points P1 and P2 may be formed at one side and the other side based on the central regions of the fixed plate 151 and the moving plate 152, respectively.

The second link member 152 is connected to the first link member 151 so as to be relatively movable. According to the present embodiment, the second link member 152 is disposed to overlap the first link member 151 and is disposed to be linearly movable with respect to the first link member 151.

A second spring support part 152a is formed at the other end of the second link member 152, and the second spring support part 152a may have a width of a predetermined length or more to support the plurality of springs 153. That is, the second spring support part 152a may have a shape corresponding to the first spring support part 151a.

The spring 153 is mounted between the other end of the first link member 151 and the other end of the second link member 152. In other words, the spring 153 is connected to the first spring support 151a and the second spring support 152a, respectively. One end of the spring 153 is supported by the first spring support 151a, and the other end of the spring 153 is supported by the second spring support 152a. The spring 153 may have a plurality of numbers so as to generate an elastic force of a predetermined value or more, and they may be arranged in parallel on the first and second spring supports 151a and 152a.

The fixing plate 141 is formed with a stopper 160 for limiting the rotation of the first link member 151 at a predetermined rotation angle. The stopper 160 is formed on the rotation path of the first link member 151 and is formed so that the first link member 151 can be caught at a predetermined rotation angle.

The stopper 160 may be formed at one side of the first rotation point P1, that is, at a peripheral region of the first rotation point P1. This is to minimize the moment radius applied to the stopper 160 when the first link member is in contact with the stopper 160 by minimizing the moment radius from the first rotation point (P1).

The stopper 160 has a first stopper 161 which is in contact with one side of the first link member 151 in a closed state and a second stopper 162 which is in contact with the other side of the first link member 151 in an open state. ) May be included.

The first and second stoppers 161 and 162 have sidewalls so that the side surfaces of the first link member 151 can be caught, and the first and second stoppers 161 and 162 have a predetermined thickness for this purpose.

Here, the sidewall of the first stopper 161 may be inclined to correspond to the rotation angle of the first link member 151 in the closed state. The sidewall of the second stopper 162 may be formed to be inclined to correspond to the rotation angle formed by the first link member 151 in the open state.

The first and second stoppers 161 and 162 may be formed of an elastically deformable material to absorb the shock applied from the first link member 151. For example, the first and second stoppers 161 and 162 may be attached to the fixing plate 141 in the form of a rubber or a silicon pad.

In addition, the first and second stoppers 161 and 162 may be formed of a metal material. Here, the first and second stoppers 161 and 162 may be coupled to the fixing plate 141, or may be integrally formed with the fixing plate 141. When the first and second stoppers 161 and 162 are formed of a metal material, a buffer structure may be additionally provided on the outer surfaces of the first and second stoppers 161 and 162. For example, the first and second stoppers 161 and 162 may be bonded or coated with a buffer structure formed of rubber or silicon.

5A to 5C are rear views of the slide module showing the operating state of the stopper according to the present invention.

5A illustrates an operating state of the slide module 140 corresponding to the closed state, and FIG. 5C illustrates an operating state of the slide module 140 corresponding to the open state.

Referring to FIG. 5A, the moving plate 142 is positioned above the fixing plate 141 in the closed state.

When the user relatively moves the first and second bodies 110 and 120 in the closed state, the fixed plate 141 and the moving plate 142 fixed to the first and second bodies 110 and 120 respectively move relative slides. That is, the moving plate 142 slides toward the bottom of the fixed plate 141 as shown in FIG. 5B.

According to the relative movement of the fixing plate 141 and the moving plate 142, the first link member 151 and the second link member 152 are centered on the first and second rotation points P1 and P2. As they rotate, they move relative to each other.

Due to the downward movement of the moving plate 142, the distance between the first rotation point P1 and the second rotation point P2 is close to each other. Thus, the first and second link members 151 and 152 may be connected to the first and second link members 151 and 152. The second spring support parts 151a and 152a are relatively moved in a direction in which the distance between them is closer. Accordingly, the spring 153 located between the first and second spring supports 151a and 152a is compressed.

When the user moves the first and second bodies 110 and 120 relative to each other and the moving plate 142 is moved by a predetermined distance or more, the first and second link members 151 and 152 may be formed by the elastic restoring force of the spring 153. Relative movement toward the relative position of.

That is, the first and second link members 151 and 152 automatically move relative to each other in a direction in which the distance between the first and second spring supporters 151a and 152a is far from each other, and the first and second rotation points P1 and P2. Each of them will rotate automatically.

As shown in FIG. 5C, the moving plate 142 is automatically moved to the lower position of the fixing plate 141 by the relative movement of the first and second link members 151 and 152 as described above. Will be converted.

In this process, the first link member 151 is caught by the second stopper 162 so that its rotation (counterclockwise rotation) is limited. Accordingly, the relative movement of the moving plate 142 with respect to the fixing plate 141 is stopped, and the relative movement of the first and second bodies 110 and 120 fixed thereto is also stopped.

On the contrary, when switching from the open state to the closed state, since the slide module and the spring module are operated in the reverse order of the foregoing description, the detailed description will be replaced with the previous description. When switching to the closed state, the first link member 151 is caught by the first stopper 161 so that its rotation (clockwise rotation) is limited. The relative slide movement of the first and second bodies 110 and 120 is stopped by the locking action of the first stopper 161.

In the above description, the spring module 150 is mounted on the slide module 140 and the stopper 160 is formed on the fixing plate 141. However, even if the slide module 140 is not applied and the first body 110 and the second body 120 are directly connected to the slide, the above stopping structure may be applicable.

In this case, the first and second link members 151 and 152 of the spring module 150 may have a structure in which one ends thereof are rotatably connected to the first and second bodies 110 and 120, respectively. In addition, the stopper 160 (first and second stoppers 161 and 162) may have a structure directly formed on the rear surface of the first body 110.

6 is a view showing a spring module and a stopper according to another embodiment of the present invention. In the drawings, similar reference numerals are given to the same components as in the previous embodiment, and the description of the same components is replaced with the above description.

The spring module 250 according to the present embodiment also includes a first link member 251, a second link member 252, and a spring 253.

Here, the first link member 251 has an extension portion 251 b extending from the first rotation point P1 in the opposite direction to the position of the second link member 252. The rest of the configuration of the spring module 250 except for this is made the same as the previous embodiment.

As described above, the insertion portion 241a of the fixing plate 241 is formed to form a step with the principal surface of the fixing plate 241. In FIG. 6, the insertion portion 241a has a height different from that of the main surface of the fixing plate 241 by bending the side region of the fixing plate 241.

In one region of the insertion portion 241a, a recess portion 263 is provided to provide a rotational movement space of the extension portion 251b. At both ends of the recess 263, a first stopper 261 and a second stopper 262 for limiting rotation of the extension part 251b are formed. Here, the first and second stoppers 261 and 262 have a form of sidewalls formed to be caught by the side surfaces of the extension part 251b. As described above, the outer surfaces of the first and second stoppers 261 and 262 may further include a buffer member.

The first stopper 261 restricts the rotation of the first link member 251 by engaging the extension part 251b when the switch is made to the closed state, and the second stopper 262 is the extension part when the switch is made to the open state. The rotation of the first link member 251 is limited by the hook 251b.

7 is a view showing a spring module and a stopper according to another embodiment of the present invention. In this figure, the same reference numerals are assigned to the same components as the foregoing embodiments, and the description of the same components is replaced with the foregoing description.

The spring module 350 according to the present embodiment also includes a first link member 351, a second link member 352, and a spring 353.

According to the present exemplary embodiment, a recess 363 is formed in one region of the insertion portion 341a, and the first rotation point P1 of the first link member 251 is formed in the recess 363. Is placed. The rest of the configuration of the spring module 350 except for this is the same as the embodiment described in FIG.

First and second stoppers 361 and 262 which restrict rotation of the first link member 351 are formed at both ends of the recess 363. The first and second stoppers 261 and 262 have a form of sidewalls formed to be caught by the side surfaces of the first link member 351, and the first and second stoppers 261 and 262 are combined with each other to form a 'V' shape. Can have As described above, the outer surfaces of the first and second stoppers 361 and 362 may further include a buffer member.

The first stopper 361 is to take one side of the first link member 351 when switching to the closed state, the second stopper 362 is the other of the first link member 351 when switching to the open state Make sure the sides are hooked.

8 is a block diagram of a mobile terminal according to the present invention.

Referring to FIG. 8, a mobile terminal according to an embodiment of the present invention may include a wireless communication module 181, an operation unit 116, 123, 124, an image input unit 115, 128, an audio input unit 125, a display unit 113, and an audio output unit. It includes the 114 and 131, the sensing unit 186, the interface 126, the broadcast receiving module 185, the memory 184, the power supply unit 127, and the controller 180.

The controller 180 typically controls the overall operation of the mobile terminal. For example, perform related control and processing for voice calls, data communications, video calls, and the like.

The wireless communication module 181 transmits / receives a radio signal with a mobile communication base station through an antenna. For example, under the control of the controller 180, the transmitter 182 is responsible for transmitting and receiving voice data, text data, image data, and control data, and modulates and transmits a signal to be transmitted, and a receiver for demodulating the received signal. 183).

The operation units 116, 123, and 124 are configured as shown in FIG. 1 to provide the controller 180 with key input data input by the user for controlling the operation of the terminal. The operation units 116, 123, and 124 include a dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like.

The image input units 115 and 128 process image frames such as still images or moving images obtained by the image sensor in a video call mode or a photographing mode. The processed image frame is converted into image data displayable on the display unit 113 and output to the display unit 113.

The image frames processed by the image input units 115 and 128 are stored in the memory 184 or transmitted to the outside through the wireless communication module 181 under the control of the controller 180.

The sound input unit 125 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. In the case of the call mode, the processed voice data is converted into a form transmittable to the mobile communication base station through the wireless communication module 181 and output to the wireless communication module 181. In the recording mode, the processed voice data is output to be stored in the memory 184.

The sound input unit 125 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The display 113 displays and outputs information processed by the portable terminal. For example, when the mobile terminal is in a call mode, the control unit 180 displays and outputs a user interface (UI) or a graphic user interface (GUI) related to the call. When the portable terminal is in the video call mode or the photographing mode, the mobile terminal displays and outputs the captured image, UI, or GUI under the control of the controller 180. When the display unit 113 includes a touch screen, the display unit 113 is used as an input device in addition to the output device.

The sound output units 114 and 131 may receive sound data or memory 184 received from the wireless communication module 181 under the control of the controller 180 in a call signal reception, a call mode or a recording mode, a voice recognition mode, and a broadcast reception mode. The stored sound data is converted and output to the outside.

In addition, the sound output units 114 and 131 output sound signals related to a function (for example, a call signal reception sound and a message reception sound) performed in the portable terminal.

The sensing unit 186 detects a current state of the portable terminal such as an open / closed state of the portable terminal, a position of the portable terminal, presence or absence of a user contact, and generates a sensing signal for controlling the operation of the portable terminal. For example, when the portable terminal is in the form of a slide phone, whether the slide phone is opened or closed is sensed so as to output a sensing result to the controller 180 to control the operation of the terminal. In addition, it is responsible for sensing functions related to whether the power supply unit 127 is supplied with power, whether the interface 126 is coupled to an external device, and the like.

The interface 126 may be connected to a mobile terminal using a wired / wireless headset, an external charger, a wired / wireless data port, a card socket (eg, a memory card, a SIM / UIM card), or the like. It serves as an interface with the device. The interface 126 receives data from an external device or receives power and transfers the data to each component inside the mobile terminal or transmits data within the mobile terminal to the external device.

The memory 184 may store a program for processing and controlling the controller 180, and provides a function for temporarily storing input / output data (for example, a phone book, a message, a still image, a video, etc.). It can also be done.

In addition, the memory 184 stores a program for controlling the operation of the mobile terminal according to the present invention.

This memory 184 includes the concepts of generally known hard disks, card type memory (eg SD or XD memory, etc.), flash memory, RAM, ROM, and the like.

The broadcast receiving module 185 receives a broadcast signal transmitted through a satellite or terrestrial wave, converts the broadcast signal into a broadcast data format that can be output to the sound output units 114 and 131 and the display unit 113, and outputs the broadcast signal to the controller 180. In addition, the broadcast receiving module 185 receives additional data related to the broadcast (for example, an EPG (electric program guide), a channel list, etc.). The broadcast data and additional data converted by the broadcast receiving module 185 may be stored in the memory 184.

The power supply unit 127 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.

The portable terminal 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.

1 is a front perspective view of a mobile terminal according to an embodiment of the present invention;

2 is a rear perspective view of a mobile terminal according to an embodiment of the present invention;

3 is an exploded perspective view of the mobile terminal illustrated in FIGS. 1 and 2;

4 is a rear perspective view of the slide module shown in FIG.

Figures 5a to 5c are rear views of the slide module showing the operating state of the stopper according to the present invention.

6 is a view showing a spring module and a stopper according to another embodiment of the present invention.

7 is a view showing a spring module and a stopper according to another embodiment of the present invention.

8 is a block diagram illustrating a portable terminal according to an embodiment of the present invention.

Claims (5)

First and second bodies slidably connected to each other; First and second link members having end portions rotatably connected to the first and second bodies, respectively; A spring mounted between the other end of the first link member and the other end of the second link member to generate an elastic force between the first and second link members; And And a stopper formed on the first body, the stopper restricting rotation of the first link member at a predetermined rotation angle to limit relative slide movement of the first and second bodies. The method of claim 1, The stopper is formed on a rotation path of the first link member, characterized in that the mobile terminal comprises a side wall on which the first link member is caught. The method of claim 1, The stopper is a portable terminal, characterized in that formed on one side of the rotation point of the first link member. The method of claim 1, wherein the stopper, A first stopper in which one side surface of the first link member is contacted in a closed state; And And a second stopper to which the other side surface of the first link member is contacted in the open state. The method of claim 1, A fixing plate fixed to the first body and having one end of the first link member rotatably connected thereto; And It further comprises a moving plate is fixed to the second body so as to be connected to the fixed plate relative to the fixing plate, one end of the second link member is rotatably connected, And the stopper is formed on the fixed plate.

Images