KR20090066668A - Hinge apparatus for portable terminal - Google Patents

Abstract

A hinge apparatus for a portable terminal is provided to open/close housings in two directions by providing the first and second hinge shafts, thereby improving use convenience. The first and second hinge shafts are vertically extended each other. The second housing is combined to the first housing through a hinge apparatus(200). The second housing rotates around the first hinge shaft so that the second housing is extended to an upper side of the first housing. The hinge apparatus comprises the following units. A hinge base(205) is mounted on the first housing. A hinge housing(201) rotates around the first hinge shaft. A rotation shaft(203) rotates around the second hinge shaft.

Description

Hinge device for portable terminal {HINGE APPARATUS FOR PORTABLE TERMINAL}

The present invention is an electronic notebook, portable game console, digital multimedia broadcasting (DMB) phone, game phone, chat phone, camera phone, MP3 phone, cellular phone (cellular phone), Personal Communication Services (PCS), Personal Digital Assistants (PDA) The present invention relates to a portable terminal including a hand-held phone (HHP), and more particularly, to a hinge device for rotatably coupling a pair of housings constituting the portable terminal to provide two different hinge axes.

Generally, portable terminals are classified into bar type, flip type, and folder type terminals according to their appearance.

The bar-type terminal is a type in which a data input / output means, a transmitter, and a receiver are mounted in a main body housing, and a keypad, which is a data input means, is exposed at all times, which may cause a malfunction. The distance between the transmitter and the receiver is There is a limit to miniaturization due to securing problems.

The flip terminal comprises a main body, a flip, and a hinge module that connects the main body and the flip. The flip terminal is provided with a data input / output means and a handset, and the flip is a keypad for the data input means. Although the malfunction can be prevented from being covered, the flip-type terminal also has a limitation in miniaturization due to the problem of securing the distance between the transmitter and the receiver.

The folder-type terminal includes a main body, a folder, and a hinge module for rotatably connecting the main body and the folder so that the folder is opened and closed by rotating the folder. In the call mode, the folder is opened to secure a sufficient distance between the transmitter and the receiver, which is advantageous in miniaturization. For this reason, the foldable terminal is gradually becoming the mainstream of the portable terminal.

On the other hand, as the user's tastes are diversified, portable terminals also have sliding and swing terminals, and in particular, sliding terminals are gradually becoming more general portable terminals than clamshell terminals.

However, since the appearance of the conventional portable terminals has been developed based on the appearance suitable for performing communication functions such as voice call and message transmission, it is inconvenient to use multimedia services. For example, since a display device of a general portable terminal is set to be long in the vertical direction, it is inconvenient to watch DMB, a video file, and the like.

Moreover, the functions of portable terminals have been diversified, and high speed and large file transfers have become possible. However, since the terminals for communication functions have their input devices designed for numeric input functions, the long mail There is a disadvantage in that it is inconvenient to write.

In addition, even if the inconvenience in using these portable terminals to improve the inconvenience of securing a structural stability of the portable terminal is accompanied.

Accordingly, the present invention is to provide a hinge device that not only performs a communication function, but also makes it possible to conveniently use a multimedia service such as watching a broadcast using a portable terminal.

In addition, the present invention is to provide a two-axis hinge device that can improve the ease of use by providing the first, second hinge axis to open and close the housing in two directions.

In addition, the present invention is to provide a hinge device that can improve the ease of use of the portable terminal and ensure structural stability.

Accordingly, the present invention provides a hinge device for rotatably coupling the first and second housings of a portable terminal,

A coupling shaft mounted to the first housing;

A first avoidance groove formed on an outer circumferential surface of the coupling shaft;

Mounted to the second housing, pivoting about a first hinge axis extending in the longitudinal direction of the coupling shaft past the center of the coupling shaft, extending in a vertical direction of the first hinge axis along a longitudinal direction thereof; A rotating shaft rotating about a second hinge axis passing through the shaft;

A second avoidance groove formed on an outer circumferential surface of the rotating shaft; And

A guide stopper pivoting about the first hinge axis with the rotating shaft;

While the rotary shaft pivots about the first hinge axis, the first end of the guide stopper engages with the second avoidance groove, and the second end interferes with the outer circumferential surface of the coupling shaft such that the rotary shaft is connected to the second shaft. Limit the rotation around the hinge axis,

While the rotary shaft rotates about the second hinge axis, the second end of the guide stopper engages the first avoidance groove to restrict the rotation shaft from pivoting about the first hinge axis.

At this time, the rotation shaft is rotated about the first hinge axis to rotate the second housing with respect to the first housing and positioned above the first housing, and rotates about the second hinge axis to the second The housing is rotated with respect to the first housing to be positioned on one side of the first housing.

In addition, the hinge device may further include a first elastic member that provides an elastic force in a direction to engage the first end of the guide stopper with the second avoidance groove.

In addition, the hinge device further includes a hinge housing coupled to the coupling shaft in a state rotatable about the first hinge axis, wherein the rotation shaft is coupled to the hinge housing in a state rotatable about the second hinge axis. Can be.

At this time, one end of the first elastic member is supported by the hinge housing, the other end is supported by the guide stopper, and the guide stopper is rotatably coupled to the hinge housing to apply elastic force from the first elastic member. Provided to engage the first end of the guide stopper with the second avoidance groove.

In addition, the hinge device, the first hinge cam which is received in the hinge housing and fixed to the coupling shaft; A second hinge cam accommodated in the hinge housing while facing the first hinge cam and rotating on the coupling shaft together with the hinge housing; And a second elastic member accommodated in the hinge housing and providing an elastic force in a direction in which the second hinge cam is in close contact with the first hinge cam.

At this time, the coupling shaft is preferably coupled to pass through the second elastic member, the second hinge cam and the first hinge cam sequentially.

In addition, the hinge device may further include a hinge base mounted and fixed to the first housing, and the coupling shaft may be fixed to the hinge base through the hinge housing from one end of the hinge housing.

In addition, the hinge device further includes a support pin mounted to the hinge housing in parallel with the rotating shaft, the support pin is coupled to penetrate the guide stopper to couple the guide stopper to the hinge housing in a rotatable state. You can.

A portable terminal having a hinge device according to the present invention has an advantage of not only performing a communication function but also using a multimedia service such as watching a broadcast according to a direction in which the second housing is rotated and opened. That is, by providing the first and second hinge axis to enable the opening and closing of the housing in two directions, it is possible to improve the convenience of use.

In addition, since the terminal can be arranged to be used in a horizontal direction according to the unfolding direction of the second housing, the keypad of the QWERTY keyboard arrangement of a general personal computer can be usefully used for writing a long mail.

In addition, by providing a driving force or a frictional force according to the direction in which the second housing is rotated to stably implement the operation of the second housing is rotated, it is possible to improve the stability of the terminal.

In addition, when the second housing rotates about one of the first and second hinge axes, the rotation of the second housing is restricted by the other axis, thereby improving the structural stability of the terminal.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 to 3, the portable terminal 100 including the hinge device 200 (shown in FIG. 4) according to an exemplary embodiment of the present invention may include a first housing 101 and a second housing ( 102, the second housing 102 may rotate about each of the first and second hinge axes A1 and A2 extending perpendicular to each other.

In this case, the second housing 102 may select any hinge axis among the first and second hinge axes A1 and A2 and rotate it about the hinge housing only when the second housing 102 is folded to the first housing 101. In the unfolded state by rotating about any one of the first and second hinge axes A1 and A2, it is impossible to rotate about the other hinge axis. This will be described in more detail through the configuration of the hinge device 200.

The first housing 101 accommodates a main board, a battery pack, and the like, and a keypad 111 and a talker 113 are installed on one surface of the first housing 101. By opening and closing. A first hinge arm 115 extending in the direction of the first hinge axis A1 is formed at an upper end of the first housing 101 to be coupled to the second housing 102. The first hinge arm 115 is formed only at a portion of the width of the first housing 101, and the first hinge arm 115 is not formed among the widths of the first housing 101. The remaining part will provide a space for installing the second hinge arm 125 below.

The second housing 102 is provided with a display device 121 and a receiver 123 on one surface thereof, and the second hinge arm 125 is provided at one end thereof. The second hinge arm 125 is coupled with one end thereof facing the one end of the first hinge arm 115, and rotates about the first hinge axis A1. Therefore, when the second hinge arm 125 is rotated, the second housing 102 is rotated about the first hinge axis (A1).

When the second housing 102 is coupled to the second hinge arm 125, the second housing 102 is coupled to the first housing while being rotatable about the second hinge axis A2. As a result, the second housing 102 rotates about the first hinge axis A1 together with the second hinge arm 125 from the state in which the second housing 102 is folded on the first housing 101, or the second hinge. It rotates about the said 2nd hinge arm 125 about the axis A2.

FIG. 2 illustrates a view in which the second housing 102 is rotated about the first hinge axis A1 to be opened, and FIG. 3 shows that the second housing 102 is the second hinge axis A2. The figure shows the open figure by rotating around the center.

Referring to FIG. 2, it can be seen that the terminal 100 is identical to a general foldable terminal in appearance while the second housing 102 is rotated and opened about the first hinge axis A1. have. Therefore, when the second housing 102 is rotated and opened about the first hinge axis A1, the user can conveniently use a general mobile communication function or a game.

Referring to FIG. 3, in a state in which the second housing 102 is rotated about the second hinge axis A2 and opened, the terminal 100 may provide a long screen in a horizontal direction. It can be seen that it can be placed in a state. Therefore, when the second housing 102 is rotated and opened about the second hinge axis A2, the user may conveniently use a multimedia service such as broadcasting by using the terminal 100. In addition, if the keypad 111 is configured with a qwerty keyboard arrangement such as a general personal computer keyboard, the user can conveniently input various information such as a long mail using the keypad 111.

4 to 10 are diagrams for explaining the configuration and operation of the hinge device 200. The hinge device 200 provides the first and second hinge shafts A1 and A2 extending perpendicular to each other, and the second housing 102 is connected to the first housing through the hinge device 200. 101 is rotated about the first or second hinge axes A1 and A2. The second housing 102 is rotated about the first hinge axis A1 and spreads out above the first housing 101, and is rotated about the second hinge axis A2 to allow the first housing to rotate. It is spread out to one side of 101.

4 to 6, the hinge device 200 is coupled to the hinge base 205 and the hinge base 205 mounted on the first housing 101 to connect the first hinge axis A1. A hinge housing 201 rotates about the center, and a rotating shaft 203 that is mounted to the second housing 102 and coupled to the hinge housing 201 to rotate about the second hinge axis A2. . In addition, a guide stopper 204 is installed inside the hinge housing 201 so that the second housing 102 is rotated about one of the first and second hinge axes A1 and A2 to be unfolded. This will limit the rotation around the other hinge axis.

The hinge base 205 has a support 251 formed therein, the support 251 is exposed to the outside through one end of the hinge base 205. The hinge base 205 is mounted inside the first hinge arm 115, and exposes the support part 251 to one end of the first hinge arm 115.

The hinge housing 201 extends in the direction of the first hinge axis A1 and is coupled with one end thereof facing the one end of the hinge base 205 to rotate about the first hinge axis A1. Done. The hinge housing 201 has an accommodating space (not shown) open to one end thereof. When the hinge housing 201 is coupled to the hinge base 205, the accommodating space is defined by the hinge base 205. It is closed. The other end of the hinge housing 201 is formed with a rotation hole 211 extending in the direction of the second hinge axis (A2) to provide a space for coupling the rotation shaft 203.

In order to rotatably couple the hinge housing 201 to the hinge base 205, the hinge device 200 has a coupling shaft 202. The coupling shaft 202 penetrates through the hinge housing 201 along the direction of the first hinge axis A1, and one end thereof is fixed to the hinge base 205. A fixing hole 221 is formed at one end of the coupling shaft 202, and both ends thereof are fixed to the hinge base 205 while the fixing pin 229 penetrates the fixing hole 221 so that the coupling shaft ( 202 is fixed to the hinge base 205.

In this case, the hinge housing 201 is rotated about the first hinge axis A1 while facing the hinge base 205 while being supported by the coupling shaft 202. That is, the coupling shaft 202 rotatably couples the hinge housing 201 to the hinge base 205, and ultimately the first hinge arm 115.

On the other hand, the hinge housing is mounted and fixed in the second hinge arm 125. Consequently, the hinge base 205, the hinge housing 201, and the coupling shaft 202 are for rotatably coupling the second hinge arm 125 to the first hinge arm 115. In a specific embodiment of the present invention, the first and second hinge arms 115 and 125, the hinge base 205 and the hinge housing 201 are described in a separately manufactured configuration, but this is the hinge device 200 In consideration of the ease of assembly of the configuration, the hinge base 205 according to the product is the first hinge arm 115, the hinge housing 201 is to be integrally manufactured to the second hinge arm 125, respectively Can be.

The rotary shaft 203 extends in the direction of the second hinge axis A2, and its center coincides with the second hinge axis A2, and one end thereof is connected to the hinge housing (2) through the rotation hole 211. 201). When the rotating shaft 203 is coupled to the rotating hole 211, binding members 239 are mounted on the outer circumferential surface of the rotating shaft 203 so that the rotating shaft 203 is separated from the rotating hole 211. To prevent it.

The rotating shaft 203 is coupled to the hinge housing 201 to rotate about the second hinge axis A2. In addition, since the rotating shaft 203 is mounted to the hinge housing 201, the rotating shaft 203 is rotated while the hinge housing 201 is rotated about the first hinge axis A1. The coupling shaft 202, more specifically, the pivoting movement around the first hinge axis (A1).

The other end of the rotating shaft 203 is mounted with a fastening piece 231 extending in the vertical direction of the second hinge axis (A2) to provide a coupling means with the second housing (102). The rotating shaft 203 may be coupled to the second housing 102 as it is, but may be more firmly coupled to the second housing 102 by having the fastening piece 231.

As a result, the hinge base 205 is mounted and fixed to the inside of the first hinge arm 115 and the hinge housing 201 to the inside of the second hinge arm 125, respectively. The housing 201 is rotatably coupled to the hinge base 205 by the coupling shaft 202. As a result, the second hinge arm 125 is coupled to the first hinge arm 115 so as to rotate about the first hinge axis A1. In addition, the rotation shaft 203 is inserted into the second hinge arm 125 in a state of being mounted to the second housing 102 to be coupled to the hinge housing 201, thereby providing the second housing 102. ) Is connected to the second hinge arm 125. In this way, the second housing 102 is connected to the second hinge arm 125 and the hinge housing 201, and ultimately the first housing 101, by the rotating shaft 203.

As a result, the second housing 102 rotates about the first hinge axis A1 together with the hinge housing 201 and the second hinge arm 125, and together with the rotating shaft 203. It is possible to rotate around the second hinge axis A2.

In this case, a flexible printed circuit (not shown) connecting the circuit devices inside the first and second housings 101 and 102 is wired via the hinge device 200 to prevent damage to the flexible printed circuit. In order to prevent it, it is preferable to set a condition under which the second housing 102 can rotate. That is, if the second housing 102 is rotated around the first and second hinge axes A1 and A2 at any position without any limitation, an excessively large tensile force may be applied to the flexible printed circuit, thereby causing disconnection. There is a danger.

Accordingly, the hinge device 200 according to the present invention rotates about the second hinge axis A2 in a state in which the second housing 102 is rotated about the first hinge axis A1 and deployed. In this state, the rotation of the second hinge shaft A2 is rotated about the second hinge axis A2, thereby limiting the rotation of the first hinge axis A1 to prevent damage to the flexible printed circuit.

The hinge device 200 includes a guide stopper 204 and evacuation grooves 223 and 233 formed in the coupling shaft 202 and the rotation shaft 203 so that the second housing 102 rotates. Set the conditions that can be done.

While the second housing 102 is rotated about the first hinge axis A1 from the position folded in the first housing 101, the first end 204a of the guide stopper 204 The second end 204b of the guide stopper 204 is received along the outer circumferential surface of the coupling shaft 202. At this time, when the second housing 102 is rotated about the second hinge axis A2, the first end 204a is separated from the second avoidance groove 233, thereby removing the guide stopper 204. In this case, the second end 204b interferes with the outer circumferential surface of the coupling shaft 202 to maintain the first end 204a in the second evacuation groove 233. As a result, while rotating about the first hinge axis A1, the first end 204a is constrained in the second avoidance groove 233, so that the second housing 102 is connected to the second hinge axis A2. It is to prevent the rotation around the center.

While the second housing 102 is rotated about the second hinge axis A1 from the position folded in the first housing 101, the first end portion 204a is the second avoidance groove 233. The second end 204b is engaged with the first evacuation groove 223 by rotating the guide stopper 204. While rotating about the second hinge axis A2, the second end 204b is engaged with the first evacuation groove 223 so as to engage the second housing 102, more specifically the hinge housing 201. ) And the rotation shaft 203 are constrained so as not to rotate or pivot about the first hinge axis A1.

The guide stopper 204 has a flat plate shape and is accommodated in the slit 213 formed in the hinge housing 201 to rotate therein. In this case, the support pins 241 are coupled to the hinge housing 201 in parallel with the rotation shaft 203, and the support pins 241 are installed to penetrate the guide stopper 204 and the guide stoppers 204. ) To support rotation. At this time, the washer 247 is fastened to the end of the support pin 241 so that the guide stopper 204 is in direct contact with the hinge housing 201 while fixing the support pin 241 to the hinge housing 201. To prevent it. In addition, a first elastic member 243 is accommodated in the hinge housing 201 to provide a driving force to rotate the guide stopper 204. The guide stopper 204 receives the elastic force of the first elastic member 243 to rotate in the direction in which the first end 204a presses the outer circumferential surface of the rotation shaft 203, and the second avoidance groove In the position where 233 faces the first end 204a, the first end 204a is engaged with the second avoidance groove 233.

After the support pins 241 and the first elastic member 243 are installed, the fixing piece 245 is fixed to the outer circumferential surface of the hinge housing 201 by the screw 249 so that the support pins 241 and the first elastic member 243 are fixed. 1, the elastic member 243 is bound to the hinge housing 201.

Hereinafter, the operation of opening and closing the terminal 100 and the operation of the hinge device 200 will be described.

First, FIG. 1, FIG. 6 and FIG. 7 show the first and second housings 101 and 102 of the terminal 100 folded and the hinge device 200 at that time. 6 and 7 illustrate an internal configuration of the hinge device 200.

1, 6, and 7, when the first and second housings are folded, the fastening pieces 231 are aligned along the first hinge axis A1, and the guide The first end 204a of the stopper 204 is engaged with the second avoidance groove 233, and the second end 204b faces the first avoidance groove 223 while the first avoidance groove 223 is disposed. Is out of the state. This is because the guide stopper 204 rotates in the direction in which the first end 204a is engaged with the second avoidance groove 233 by the elastic force of the first elastic member 243. That is, at least a portion of the guide stopper 204 is always engaged with the selected one of the first and second avoidance grooves 204a and 204b.

In the position where the first and second housings 101 and 102 are folded together, the second housing 102 selects one of the first and second hinge axes A1 and A2 to center the selected hinge axis. Can be rotated. That is, when the first and second housings 101 and 102 are folded together, the second housing 102 may rotate and unfold in any direction of an upper side and one side of the first housing 101. .

2 and 8 are views in which the second housing 102 is rotated about the first hinge axis A1 and unfolded to the upper side of the first housing 101, and the hinge device 200 at that time. It shows the interior of the house.

When the second housing 102 extends above the first housing from a position folded in the first housing 101, the guide stopper 204 is connected to the hinge housing 201 and the rotating shaft 203. Together with the first hinge axis (A1) is pivoted. At this time, the first end 204a is still engaged with the second avoidance groove 233, and the second end 204b moves along the outer circumferential surface of the coupling shaft 202. At this time, if the second housing 102 is to be rotated about the second hinge axis A2, the guide stopper 204 may be detached from the second avoiding groove 233. Should rotate. However, the second end 204b interferes with the outer circumferential surface of the coupling shaft 202 so that the guide stopper 204 is not rotatable, and eventually rotates about the first hinge axis A1. The second housing 102 cannot rotate about the second hinge axis A2.

Meanwhile, first and second hinge cams 291 and 293 and second elastic members 295 may be accommodated in the hinge housing 201 to provide a driving force for rotating the hinge housing 201. When the first and second hinge cams 291 and 293 and the second elastic member 295 are installed in the hinge housing 201, the coupling shaft 202 is inserted from the other end of the hinge housing 201. The second elastic member 295, the second hinge cam 293 and the first hinge cam 291 are sequentially penetrated, one end of which is fixed to the hinge base 205.

The first hinge cam 291 is assembled with its one end fixed to the hinge base 205, with the other end positioned in the hinge housing 201. One end of the first hinge cam 291 is formed with a fixing groove (not shown) fixed to the end of the support portion 251. A portion of the outer circumferential surface of the support part 251 is formed in a planar shape, and the fixing groove is formed to correspond to the cross-sectional shape of the support part 251, such that the first hinge cam 291 does not rotate on the support part 251. Is fixed. As a result, the first hinge cam 291 is fixed to the hinge base 205 together with the coupling shaft 202.

The second hinge cam 293 is installed to face the first hinge cam 291 in a state capable of linearly moving in the hinge housing 201. In this case, one end of the second elastic member 295 installed in the hinge housing 201 is supported by the second hinge cam 293 and the other end is supported by an inner wall of the hinge housing 201 to provide elastic force. Done. The second hinge cam 293 rotates together with the first hinge shaft A1 on the coupling shaft 202 together with the hinge housing 201 and receives an elastic force of the second elastic member 295. The first hinge cam 291 is in friction with the contact state.

In this case, each of the first and second hinge cams 291 and 293 may be provided with a ridge and a valley, respectively, to provide a driving force to rotate the hinge housing 201. As the elastic force of the second elastic member 295 acts, the second hinge cam 293 has a tendency to be in close contact with the first hinge cam 291, which is the second hinge cam 293 of the second hinge cam 293. It is converted into a driving force for rotating the second hinge cam 293 and the hinge housing 201 in the direction in which the mountain portion is engaged with the valley portion of the first hinge cam 291. The configuration of the hinge device for generating such a driving force is easily understood by those skilled in the art, and further detailed description thereof will be omitted.

3, 9, and 10 are views in which the second housing 102 is rotated about the second hinge axis A2 and unfolded to one side of the first housing 101, and the hinge at that time. The appearance of the device 200 is shown.

When the second housing 102 rotates about the second hinge axis A2 in a state where the first housing 101 is folded, the second avoidance groove 233 is connected to the rotating shaft 203. Moving along the circumferential direction together, the first end 204a is separated from the second avoidance groove 233. As a result, the guide stopper 204 rotates to engage the second end 204b with the first evacuation groove 223. At this time, if the second housing 102 is to be rotated about the first hinge axis A1, the second end 204b should move along the outer circumferential surface of the coupling shaft 202 but the second end Since 204b is engaged with the first avoiding groove 223, the second housing 102 is centered on the first hinge axis A1 while rotating about the second hinge axis A2. Cannot be rotated.

As a result, the hinge device according to the present invention rotatably couples the first and second housings by using the coupling shaft and the rotary shaft, and provides a pair of hinge axes extending perpendicular to each other, while using the guide stopper to provide a second hinge shaft. It is to limit the conditions under which the housing can rotate. As a result, a portable terminal in which a pair of housings can be rotatably coupled can be conveniently used in various operation modes (for example, a voice call mode and a long mail writing mode), and the structural stability of the terminal can be improved. It can be.

In the foregoing detailed description of the present invention, specific embodiments have been described. However, it will be apparent to those skilled in the art that various modifications can be made without departing from the scope of the present invention.

1 is a perspective view of a portable terminal having a hinge device according to an embodiment of the present invention;

FIG. 2 is a perspective view illustrating a state in which the second housing of the portable terminal illustrated in FIG. 1 is rotated and opened to an upper side of the first housing;

3 is a perspective view illustrating a state in which the second housing of the portable terminal shown in FIG. 1 is rotated and opened to one side of the first housing;

4 is an exploded perspective view illustrating a hinge device of the portable terminal shown in FIG. 1;

5 is an assembled perspective view showing the hinge device shown in FIG.

6 is a perspective view showing the internal structure of the hinge device shown in FIG.

7 is a perspective view showing the inside of the hinge device when the portable terminal is folded;

8 is a perspective view illustrating an internal view of a hinge device when the second housing of the portable terminal shown in FIG. 1 is rotated to an upper side of the first housing;

9 is a perspective view illustrating a hinge device when the second housing of the portable terminal illustrated in FIG. 1 is rotated to one side of the first housing;

10 is a perspective view showing an internal view of the hinge device shown in FIG.

Claims (9)

In the hinge device for rotatably coupling the first and second housings of the portable terminal, A coupling shaft mounted to the first housing; A first avoidance groove formed on an outer circumferential surface of the coupling shaft; Mounted to the second housing, pivoting about a first hinge axis extending in the longitudinal direction of the coupling shaft past the center of the coupling shaft, extending in a vertical direction of the first hinge axis along a longitudinal direction thereof; A rotating shaft rotating about a second hinge axis passing through the shaft; A second avoidance groove formed on an outer circumferential surface of the rotating shaft; And A guide stopper pivoting about the first hinge axis with the rotating shaft; While the rotary shaft pivots about the first hinge axis, the first end of the guide stopper engages with the second avoidance groove, and the second end interferes with the outer circumferential surface of the coupling shaft such that the rotary shaft is connected to the second shaft. Limit the rotation around the hinge axis, The second end of the guide stopper is engaged with the first avoidance groove while the rotation shaft rotates about the second hinge axis to restrict the rotation shaft from turning about the first hinge axis. Hinge device of the terminal. The rotating shaft of claim 1, wherein the rotating shaft pivots about the first hinge axis to pivot the second housing with respect to the first housing and is positioned above the first housing, and rotates about the second hinge axis. Thereby rotating the second housing relative to the first housing to position the second housing at one side of the first housing. According to claim 1, And a first elastic member for providing an elastic force in a direction for engaging the first end of the guide stopper with the second avoidance groove. According to claim 1, And a hinge housing coupled to the coupling shaft in a state rotatable about the first hinge axis. And the rotating shaft is coupled to the hinge housing in a state rotatable about the second hinge axis. The method of claim 4, wherein A first elastic member having one end supported by the hinge housing and the other end supported by the guide stopper, The guide stopper is rotatably coupled to the hinge housing, and the first elastic member provides a hinge force in a direction for engaging the first end of the guide stopper with the second avoidance groove. Device. The method of claim 4, wherein A first hinge cam received in the hinge housing and fixed to the coupling shaft; A second hinge cam accommodated in the hinge housing while facing the first hinge cam and rotating on the coupling shaft together with the hinge housing; And And a second elastic member accommodated in the hinge housing and providing an elastic force in a direction in which the second hinge cam is in close contact with the first hinge cam. The portable terminal of claim 6, wherein the coupling shaft is coupled to the second elastic member, the second hinge cam, and the first hinge cam sequentially. The method of claim 4, wherein And a hinge base mounted and fixed to the first housing, The coupling shaft is hinged device of a portable terminal, characterized in that fixed to the hinge base through the hinge housing from one end of the hinge housing. The method of claim 4, wherein And a support pin mounted to the hinge housing in parallel with the rotary shaft. The support pin is coupled to the guide stopper penetrates the portable terminal, characterized in that for coupling the guide stopper to the hinge housing in a rotatable state.

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