TWI395450B - Mobile terminal and method for changing mode thereof - Google Patents

Abstract

A mobile terminal including a first body, a second body covering at least a portion of the first body, and a hinge module disposed to be eccentric to one of upper left and right sides between the first and second bodies and configured to allow the second body to be horizontally rotatable with respect to the first body.

Description

Mobile terminal device and method for changing its mode

The present invention relates to a mobile terminal device having a rotary body, and a method of changing a screen mode of a terminal device in accordance with a rotating body.

Mobile terminal devices such as mobile phones, personal digital assistants (PDAs), etc., allow users to actually communicate with each other anywhere and at any time. In addition to the general call service, the mobile terminal device also provides several other functions, such as providing Internet access, providing video services for users to view video, and the like. Therefore, the role played by the display of mobile terminal devices is becoming more and more important.

For example, some typical types of mobile terminal devices include: a display device that is horizontally rotatable to enable a user to view, for example, a broadcast television program. However, a disadvantage of these types of mobile terminal devices is that the rotated display device occupies most of the main body, thereby limiting the size of the keyboard provided on the main body of the mobile terminal device.

Accordingly, it is an object of the present invention to address the above mentioned and other problems.

Another object of the present invention is to provide a mobile terminal device including a rotary display device which can leave a large portion of the main body space and can use a larger keyboard.

In order to achieve these and other advantages and in accordance with the purpose of the present invention as embodied and broadly described herein, the present invention provides, in one aspect, a novel mobile terminal device comprising: a first body; a second body, Covering at least a portion of the first body; and a hinge module configured to be offset between the first body and the second body with respect to one of the upper left side and the upper right side, and configured to allow the second The body is horizontally rotatable relative to the first body.

In another aspect, the present invention provides a method for changing a screen mode of a mobile terminal device. The method includes maintaining a call standby state in a state in which the second main system of the mobile terminal device covers the first body; and sensing a rotation direction and a rotation speed of the second body when the second body is rotated relative to the first body At least one of; and changing a screen mode of the mobile terminal device according to at least one of the sensed direction of rotation and the speed of rotation.

Further scope of the invention will become apparent from the detailed description which follows. It should be understood, however, that the detailed description of the preferred embodiments of the invention, Those skilled in the art will be able to clarify from this detailed description.

DETAILED DESCRIPTION OF THE INVENTION Reference will now be made in detail to the preferred embodiments embodiments

Referring first to Fig. 1, there is shown a plan view showing a mobile terminal device 1 according to a first example of the present invention. As shown in FIG. 1, the mobile terminal device 1 includes a first body 10 and a second body 20 that are connected to each other such that the second body 20 can be horizontally rotated above the first body 10. In more detail, the mobile terminal device 1 includes a hinge module 30 that is mounted at an upper right corner between the first body 10 and the second body 20 such that the second body 20 can be horizontally rotated.

Moreover, the position of the hinge module 30 advantageously allows for the presence of a large open area on the first body 10. It should be noted that the position of the hinge module 30 may also be at the upper left corner between the first body 10 and the second body 20. Further, the left side and the right side indicate the left side and the right side in FIG. 1, and the upper side and the lower side side indicate the upper side and the lower side in FIG.

Further, as shown in FIG. 1, the second body 20 has a smaller length than the first body 10 such that when the second body 20 is closed relative to the first body 10, a portion of the first body 10 is exposed. In addition, a keyboard 12 is formed in the exposed portion. The mobile terminal device also includes a microphone 15 located at the lower end of the first body 10 and a first speaker 23 and a second speaker 24 respectively located at the upper front end portion and the lower front end portion of the second body 20. The second body 20 also includes a display device 21.

Therefore, the user can use the keyboard 12, the microphone 15 and the first speaker 23 and the second speaker 24 to receive or call the other party to make or call in without having to open the second body 20. Further, when the second body 20 is rotationally opened, the first speaker 23 is also rotated to provide user stereo by interaction with the second speaker 24.

In more detail, FIG. 2 is a plan view showing the second body 20 in an open state after being rotated clockwise by 90° from the closed state shown in FIG. 1. As shown in FIG. 2, the mobile terminal device 1 also includes a keyboard 11 formed on the surface of the first body 10. As shown, when the second body 20 is rotated by 90°, the keyboard 11 is exposed. The keyboard 12 is also exposed (that is, the keyboard 12 is always exposed).

In addition, the first keyboard 11 includes a plurality of keys having numbers, English letters, and the like, which allow the user to select to input information. The keyboard 12 includes a plurality of direction keys, a send key, a menu key, a search key, etc., to enable the user to select a particular function or menu using the keys. Therefore, when the second body 20 is rotated to be turned on, the user can use the first keyboard 11 and/or the keyboard 12 to receive a call from the other party or call the other party. Further, the keyboards 11 and 12 may be a push-type keyboard that operates in a press-pressed manner or a touch-type keyboard that operates in a touch-sensitive manner.

Therefore, referring to FIGS. 1 and 2, since the hinge module 30 is eccentrically disposed at the upper right corner between the first body 10 and the second body 20, the keyboard 11 has a relatively large area. In other words, the related art rotary mobile terminal device includes a hinge module positioned at the center of the mobile terminal device, which reduces the size of the area available for the keyboard on the first body.

Further, the hinge module 30 is disposed at a position such that when the first body 10 and the second body 20 are in the closed position as shown in FIG. 1, the top portions of the first body 10 and the second body 20 overlap each other. This configuration forms a long strip of mobile terminal device. Further, as shown by a broken line in FIG. 2, when the second body 20 is rotated, the side edge portion of the second body 20 is higher than the top edge portion of the first body 10, thereby forming a T-shape. Mobile terminal device.

Further, as shown in FIG. 1, when the second body 20 is closed relative to the first body 10, the display device 21 displays a vertical screen, and as shown in FIG. 2, when the second body 20 is opened relative to the first body 10. At the time, a horizontal screen is displayed. In the on state, the user can easily perform an editing operation in the text transmission mode, a video program in the video on demand (VOD) mode on the display device 21, or a television program in the broadcast mode, and the like.

3 and FIG. 4, which are side views showing an exploded side view and a combination of the mobile terminal devices shown in FIGS. 1 and 2, respectively. As shown, the mobile terminal device 1 includes a keyboard mounting portion 17 for mounting a keyboard 12 that has been exposed (i.e., when the second body 20 is opened and closed). Also included is another keyboard mounting portion 16 that is disposed adjacent to the keyboard mounting portion 17 and below the keyboard mounting portion 17, and the keyboard mounting portion 16 is for mounting the keyboard 11. Therefore, as shown in Fig. 4, the second body 20 is installed inwardly from the second keyboard mounting portion 17, making it mechanically quite stable. It should also be noted that in FIG. 4, an upper surface of the second body 20 is higher than an upper surface of the first body 10 (that is, higher than the upper surface of the keyboard mounting portion 17 of the first body 10). ).

Next, Fig. 5 is a side view showing a mobile terminal device 90 according to another example of the present invention. In this example, an upper surface of the second body 92 of the mobile terminal device 90 has the same height as an upper surface of a keyboard mounting portion 96, and the keyboard mounting portion 96 is used to mount a device. Use the keyboard 95. FIG. 5 also illustrates a keyboard mounting portion 94 for mounting another keyboard 97, and a hinge module 93. Therefore, for the configuration shown in FIG. 5, the mobile terminal device 90 has a simpler appearance and better stability.

Referring next to Figures 6 through 8, an exploded view of the hinge module 30 of Figures 1 and 2 is shown. As shown in FIGS. 6 and 8, the hinge module 30 includes first and second hinge members 31 and 32, and the first and second hinge members 31 and 32 are configured to be mounted in a parallel manner and formed. A tablet. The first hinge member 31 is formed on the upper surface of the first body 10, and the second hinge member 32 is formed on the lower surface of the second body 20 corresponding to the position of the first body 10.

6 and 8 also illustrate a second hinge member 32 having a main shaft 33, which is configured to be perpendicular to the first hinge member 31 and the second hinge member 32. The main shaft 33 also supports the first hinge member 31 such that the first hinge member 31 can be horizontally rotated with respect to the second hinge member 32. In addition, as shown in FIG. 7 and FIG. 8, the first hinge member 31 and the second hinge member 32 and the main shaft 33 have one hole therein, and one connector can pass through the hole for the first body 10 and the first body. The two bodies 20 are electrically connected.

Further, an elastic mechanism is provided between the first hinge member 31 and the second hinge member 32, thereby providing an elastic force in the rotational direction when the first hinge member 31 is rotated relative to the second hinge member 32. In more detail, as shown in FIGS. 7 and 8, the elastic mechanism includes a fixed cam 40 that is fixed to the first hinge member 31. The stationary cam 40 also includes a cam profile formed on the outer peripheral surface of the cam.

The spring mechanism also includes cams 50A and 50B and a spring 80 mounted around the cams 50A and 50B. In the embodiment shown in Figure 4, cam 50A is movable and cam 50B is not. The spring 80 elastically provides a rotational force to the cam 50A. In other words, the cam 50A can linearly move around the fixed cam 40 on the first hinge member 31 in one radial direction, so that the second body 20 can be rotated relative to the first body 10. In more detail, the cam profile of the fixed cam 40 is formed from a closed position of the second body 20 at an angle of 90° in the clockwise direction such that after the second body 20 is rotated by 90°, the second body 20 can be stopped at its closed position and its open position.

Further, as shown in FIG. 8, the fixed cam 40 includes a first curved portion 41 and a second curved portion 42 on its outer peripheral surface. The first curved portion 41 is bent to stop the second body 20 at its closed position, and the second curved portion 42 is formed to stop the second body 20 at its open position. In other words, the first curved portion 41 and the second curved portion 42 of the fixed cam 40 interact with the movable cam 50A to stop the two bodies 20 at both their open and closed positions. Further, among the above descriptions, only the first cam 50A is movable. However, if the cam profile of the stationary cam 40 is double symmetrically centered on the spindle, the movable cam 50B can also be mounted to move in the radial direction.

Further, as shown in FIGS. 7 and 8, the first movable cam 50A includes: a convex stopper projection 51 and a scroll wheel 52, and the stopper projection 51 and the cam of the fixed cam 40 The contours are in contact, and the scroll wheel 52 is disposed at the stop projection 51. Therefore, the movable cam 50 is moved along the upper portion of the cam profile of the fixed cam 40 such that the second body 20 can be rotated by 90° with respect to the first body 10. Further, the rolling wheel 52 lowers the frictional force of the first movable cam 50A, and thereby the second body 20 can be smoothly rotated.

6 and 8 also illustrate a hinge module 30 that includes a guide member 70 formed between the second hinge member 32 and the first movable cam 50A. The guide member 70 is configured to allow the first movable cam 50A to be linearly moved toward the main shaft 33 (or the stationary cam 40) and away from the main shaft 33 (or the stationary cam 40). In more detail, the guiding member 70 includes a slit groove 72 formed in the second hinge member 32 and a guiding projection 71 formed on the first movable cam 50A. Therefore, the guide projection 71 slides within the guide groove 72. Further, the guiding members 70 are preferably disposed at both ends of the first movable cam 50A to prevent shaking caused when the cam 50A is moved.

Further, the spring 80 is formed to surround the first and second cams 50A and 50B, so that the spring 80 can be easily assembled. However, since the spring 80 only needs to provide an elastic force to pull the first and second cams 50A and 50B toward each other, the spring 80 can also be formed to connect both ends of the first and second cams 50A and 50B such that the cam 50A and 50B is pulled together.

Furthermore, FIGS. 6 through 8 further illustrate a hinge module 30 that includes a stop member 60 that is disposed between the second hinge member 32 and the stationary cam 40 to permit the first hinge member 31. It can be stopped at a precise stop position relative to the second hinge member 32. As shown, the stop member 60 includes an arcuate guide groove 62 and a stop projection 61 that is attached to the two hinge members 32, and the stop projection The member 61 is raised from the fixed cam 40. The length of the guiding groove 66 corresponds to the rotatable angle of the second body 20.

The operation of the hinge module 30 will now be described with reference to FIGS. 9 through 11. In more detail, FIG. 9 illustrates a state in which the second body 20 is closed relative to the first body 10. As shown, the stop projection 51 of the first movable cam 50A and the rolling wheel 52 are stopped at the first curved portion 41 of the fixed cam 40. As shown in FIG. 10, when the second body 20 is slightly rotated clockwise, the fixed cam 40 is rotated in the reverse direction, and the first movable cam 50A is moved in the direction away from the second cam 50B.

Further, when the fixed cam 40 is being rotated, the stopper projection 51 and the scroll wheel 52 pass through a dead point existing between the first curved portion 41 and the second curved portion 42. At this time, the first cam 50A is moved closer to the second cam 50B by the elastic force of the spring 80. Therefore, the second body 20 automatically rotates in the direction in which it just started to rotate. Further, as shown in FIG. 11, when the stopper projection 51 and the rolling wheel 52 reach the second curved portion 42, the second body 20 stops rotating.

Referring next to Fig. 12, there is shown a plan view showing the open state of the mobile terminal device 100 according to the second example of the present invention. As shown, the mobile terminal device 100 includes a first body 110, a second body 120 and a hinge module 130. The hinge module 130 is disposed in an upper right corner between the hinge module 130 and the second body 120 and is configured to allow the second body 120 to be rotated by 90° and 180° with respect to the first body 110. FIG. 12 illustrates the second body 120 rotated 180° relative to the first body 110.

Furthermore, as shown in FIG. 12, the mobile terminal device 100 includes a first keyboard 111, a second keyboard 112 and a third keyboard 113. The first keyboard 111 is exposed when the second body 120 is rotated by 90°. The second keyboard 112 is typically exposed, while the third keyboard 113 is exposed when the second body 120 is rotated 180°. The first keyboard 111 and the second keyboard 112 perform the same roles as the keyboards 11 and 12 of the first example of the present invention. The third keyboard 113 is preferably a directional keyboard including directional arrows. The mobile terminal device 100 also includes a display device 121 above the second body 120, a plurality of speakers 123 and 124, and a microphone 115 (similar to the first example).

Therefore, when the second body 120 is rotated by 90° and 180°, the display device 121 displays both the horizontal and vertical screens. For example, when the second body 120 is rotated by 90° similar to the first example, the display device 121 is horizontal and the first keyboard 111 is exposed. Therefore, the user can perform an editing operation or the like using the first keyboard 111 and view the display device 121 horizontally. Therefore, when the second body 120 is rotated by another 90° (that is, a total of 180°), the third keyboard 113 is also exposed, and the display device 121 is vertically and slightly shifted to the right side of the first body 110. Therefore, in this example, the user can use the direction keys on the third keyboard 113 to play the game or perform the search operation.

Next, Fig. 13 is a plan view showing the hinge module 130 of the mobile terminal device of Fig. 12. As shown, the hinge module 130 includes a first movable cam 150A that is mounted for linear movement relative to a stationary cam (not shown in Figure 13). The hinge module 130 also includes a stop member 160 and a stop projection 161 having a guide groove 162 having an arcuate length of about 180°, and the stop projection 161 It is configured such that the second hinge member 132 is accurately stopped at a 180° rotation point relative to the first hinge member (not shown).

Furthermore, as shown in FIG. 14, the outer surface of a fixed cam 140 includes a first curved portion 141, a second curved portion 142 and a third curved portion 143, and the first curved portion 141 is configured to be When the two bodies 120 are closed relative to the first body 110, the mobile cam 150 is captured, and the second curved portion 142 is configured to capture the mobile cam 150 when the second body 120 is rotated by 90°, and the third bend Portion 143 is then configured to capture mobile cam 150 when the second body 120 is rotated 180°. Further, similar to the first example, the hinge module 130 also includes a second cam 150B, a stop projection 151, a scroll wheel 152 and a spring 180.

The mode of operation of the hinge module 130 will now be described with reference to Figures 14-18. As shown in FIG. 14, when the second body 120 is closed relative to the first body 110, the stop projection 151 and the scroll wheel 152 are engaged in the first curved portion 141 of the fixed cam 140. As shown in FIG. 15, when the second body 120 is rotated slightly clockwise, the first cam 150A moves in a direction away from the second cam 150B. Further, as in the first example, when the fixed cam 140 is being rotated, the stopper projection 151 and the scroll wheel 152 pass through a dead point existing between the first curved portion 141 and the second curved portion 142. At this time, the first cam 150A is moved closer to the second cam 150B by the elastic force of the spring 180. Therefore, the second body 120 automatically rotates in the direction in which it starts to rotate.

Figure 16 illustrates that the stop projection 151 engages the scroll wheel 152 with the second curved portion 142 such that the second body 120 stops rotating. Further, as shown in FIG. 17, when the second body 120 is further rotated slightly clockwise, the stopper projection 151 and the scroll wheel 152 pass through a dead point existing between the second curved portion 142 and the third curved portion 143. .

At this time, the first cam 150A moves in a direction closer to the second cam 150B by the effect of the elastic force of the spring 180. Therefore, the second body 120 automatically rotates in the direction in which it starts to rotate. Further, as shown in FIG. 18, the stopper projection 151 and the rolling wheel 152 then engage the third curved portion 143 such that the second body 120 stops rotating.

Referring now to Figure 19, there is shown a plan view of a mobile terminal device 200 in accordance with a third example of the present invention. As shown, when the second body 220 is rotated counterclockwise by 90 relative to the first body 210, the mobile terminal device is in an open state. In this state, the display device 221 is a horizontal screen, so that the image can be displayed horizontally without being turned upside down. In other examples, the mobile terminal device 200 also includes a plurality of speakers 223 and 224, a first body 210, a plurality of keyboards 211 and 221, a microphone 215, and a hinge module 230. Furthermore, the cam profile of the stationary cam in the hinge module 230 is formed in two directions such that the second body 220 can be turned on by counterclockwise rotation and then turned clockwise to close.

Next, Fig. 20 is a control block diagram of a mobile terminal device according to an example of the present invention. As shown in FIG. 20, the mobile terminal device includes a controller 85 for changing the mode of the terminal device according to a direction of rotation and/or changing the angle of the second body. Also included is at least one sensor 86 for sensing the direction and angle of rotation of the second body and transmitting corresponding signals to the controller 85. The sensor 86 is positioned to detect the direction and angle of rotation of the second body. For example, the sensor 86 can be disposed between the first body and the second body.

Further, the sensor 86 is preferably a Hall effect type switch capable of sensing a magnet (not shown) on one of the first body and the second body. Therefore, when the sensor 86 senses the direction and/or angle of rotation of the second body, the sensor 86 transmits a corresponding signal to the controller 85, and the controller 85 changes the corresponding screen mode of the mobile terminal device. For example, the controller 85 can change the image displayed on the display device 87 from a horizontal screen to a vertical screen or a vertically inverted image. Any of the above-described examples of the present invention can implement the mobile terminal device described in FIG.

Referring next to Fig. 21, there is shown a flow chart of a method for changing the screen mode of a mobile terminal device according to an example of the present invention. Figure 20 will also be mentioned in this description. As shown in FIG. 21, when the second body is closed over the first body, the mobile terminal device is in the standby mode (S10). Next, the controller 85 determines whether the second body has been rotated (S12). If the second body has been rotated (YES in S12), the sensor 86 senses the rotation direction and the rotation angle of the second body (S14).

The controller 85 then determines whether the rotation angle is 90° rotated clockwise (S16). For example, FIG. 2 illustrates that the second body 20 is rotated by 90° in the clockwise direction. If the rotation angle is rotated by 90° in the clockwise direction (YES in S16), the controller 85 changes the mode of the terminal device to the TV reception mode (S18). If the rotation angle is not rotated by 90° in the clockwise direction (NO in S16), the controller 85 determines whether the rotation angle is rotated by 90° counterclockwise (S20). If the rotation angle is rotated by 90° in the counterclockwise direction (YES in S20), the controller 85 changes the mode of the terminal device to the game mode (S22). If the rotation angle is not rotated by 90° in the counterclockwise direction (NO in S20), the controller 85 determines whether the rotation angle is 180 (S24). If the rotation angle is 90 ("YES" in S24), the method returns to step S10. Otherwise (NO in S24), the method returns to step S14.

Further, the specific mode to which the terminal device is automatically changed by the controller 85 can be stored in advance without requiring an additional button operated by the user. Therefore, by changing the specific mode stored in the memory when necessary, the user can automatically change the terminal device to various desired modes in accordance with the rotation of the second body. Further, the specific mode can be at least one of a standby mode, a call mode, a text transmission mode, and the like.

As described so far, the mobile terminal device and mode changing method according to an example of the present invention have several advantages. For example, a portion of the first primary system that is exposed when the second body is opened is enlarged because the hinge module is configured to be offset from one of the left and right sides between the first body and the second body. . Therefore, a larger keyboard can be installed in the portion exposed by the first body. Thereby, the mobile terminal device can be better utilized. In addition, since the direction of the image displayed on the display device is automatically changed by rotating the second body, it is possible to provide the user with the best screen to enjoy the movie or watch the television program.

Since the present invention may be embodied in a number of forms without departing from the spirit or essential characteristics thereof, it should be understood that the above examples are not limited by the details of the foregoing description, but should The spirit and scope of the patents are to be interpreted broadly within the scope of the invention, and therefore, all changes and modifications that fall within the scope of the claims or their equivalents are therefore intended to be included.

1. . . Mobile terminal device

10. . . First subject

11. . . First keyboard

12. . . keyboard

15. . . microphone

16. . . Keyboard assembly

17. . . Keyboard assembly

20. . . Second subject

twenty one. . . Display device

twenty three. . . First speaker

twenty four. . . Second speaker

30. . . Hinge module

31. . . First hinge member

32. . . Second hinge member

33. . . Spindle

40. . . Fixed cam

41. . . First curved part

42. . . Second curved part

50A. . . Cam

50B. . . Cam

51. . . Stop protruding piece

52. . . Scroll wheel

60. . . Stop member

61. . . Stop protruding piece

62. . . Curved guiding groove

66. . . Guide groove

70. . . Guide member

71. . . Guide projection

72. . . Slot groove (guide groove)

80. . . spring

85. . . Controller

86. . . Sensor

87. . . Display device

90. . . Mobile terminal device

92. . . Second subject

93. . . Hinge module

94. . . Keyboard assembly

95. . . Installation keyboard

96. . . Keyboard assembly

97. . . keyboard

100. . . Mobile terminal device

110. . . First subject

111. . . First keyboard

112. . . Second keyboard

113. . . Third keyboard

115. . . microphone

120. . . Second subject

121. . . Display device

123. . . speaker

124. . . speaker

130. . . Hinge module

132. . . Second hinge member

140. . . Fixed cam

141. . . First curved part

142. . . Second curved part

143. . . Third curved part

150. . . Mobile cam

150A. . . First moving cam

150B. . . Second cam

151. . . Stop protruding piece

152. . . Scroll wheel

160. . . Stop member

161. . . Stop protruding piece

162. . . Guide groove

180. . . spring

200. . . Mobile terminal device

210. . . First subject

211. . . keyboard

215. . . microphone

220. . . Second subject

221. . . keyboard

221. . . Display device

223. . . speaker

224. . . speaker

230. . . Hinge module

The present invention will be more fully understood from the foregoing description and appended claims appended claims FIG. 2 is a plan view showing the rotary display main body of the mobile terminal device shown in FIG. 1. FIG. 3 is an exploded side view showing the mobile terminal device of FIG. 1. FIG. 4 is a view illustrating the action of FIG. Figure 5 is a side view of a mobile terminal device according to another example of the present invention; Figure 6 is a plan view showing a hinge module included in the mobile terminal device of Figure 1; 6 is a partially exploded perspective view of the hinge module of FIG. 6; FIG. 8 is a complete exploded perspective view of the hinge module of FIG. 6; FIG. 9 to FIG. 10 are schematic diagrams for explaining the operation state of the hinge module of FIG. Figure 12 is a plan view showing the open state of the display main body of the mobile terminal device according to the second example of the present invention; Figure 13 is a plan view of the hinge module of the mobile terminal device of Figure 12; Figure 14 to Figure 18 are respectively BRIEF DESCRIPTION OF THE DRAWINGS FIG. 19 is a plan view showing an open state of a display main body of a mobile terminal device according to a third example of the present invention; FIG. 20 is a view showing a mobile terminal device according to an example of the present invention; A control block diagram; and FIG. 21 is a flow chart illustrating a method for changing a screen mode of a mobile terminal device according to an example of the present invention.

1. . . Mobile terminal device

10. . . First subject

11. . . First keyboard

12. . . keyboard

15. . . microphone

20. . . Second subject

twenty one. . . Display device

twenty three. . . First speaker

twenty four. . . Second speaker

30. . . Hinge module

Claims (21)

A mobile terminal device comprising: a first body; a second body covering at least a portion of the first body; and a hinge module configured to be in the first body and the first body The upper left side and the upper right side are eccentric between the two bodies, and are configured to allow the second body to be horizontally rotatable relative to the first body, wherein the second body has a shorter length than the first body When the second body is closed relative to the first body via the hinge module, a first portion of the first body that is not covered by the second body is exposed; wherein the first body comprises: a first a keyboard mounted on a second portion of the first body, the second portion being covered by the second body when the second body is closed relative to the first body via the hinge module; and a A second keyboard is mounted on the first portion of the first body, and the first portion is not covered by the second body when the second body is closed relative to the first body via the hinge module. The mobile terminal device of claim 1, further comprising: a first keyboard mounting portion for mounting the first keyboard in a recess of the first body; and a first The second keyboard mounting portion is configured to mount the second keyboard. The mobile terminal device of claim 2, wherein The second keyboard mounting portion is substantially flush with the upper surface of the second body. The mobile terminal device of claim 1, wherein the second body comprises: a display device, and when the second body is closed relative to the first body, the display device provides a vertical screen, and The display device provides a horizontal screen when the second body is turned 90° relative to the first body. The mobile terminal device of claim 4, wherein the second body is rotated and rotated by 90° and 180° with respect to the first body. The mobile terminal device of claim 5, further comprising: a third keyboard that is additionally exposed when the second body is rotated by 180°. The mobile terminal device of claim 6, wherein the third keyboard is a directional keyboard including a plurality of direction keys. The mobile terminal device of claim 5, wherein the display device provides both horizontal and vertical screens when the second body is rotated by 180°. The mobile terminal device of claim 1, further comprising: first and second speakers, wherein the first and second speakers are disposed at an upper end and a lower end of the second body . The mobile terminal device of claim 1, wherein the hinge module comprises: First and second hinge members, the members are mounted to be respectively parallel to an upper surface of the first body and a lower surface of the second body corresponding to the first body; and a spindle configured to Vertical to the first and second hinge members and configured to support the first hinge member such that the first hinge member is horizontally rotatable relative to the second hinge member. The mobile terminal device of claim 10, wherein the hinge module further comprises: an elastic mechanism disposed between the first and second hinge members, and configured to When the first hinge member rotates relative to the second hinge member, an elastic force is provided in a rotational direction. The mobile terminal device of claim 11, wherein the elastic mechanism comprises: a fixed cam fixed at one of the first hinge member and the second hinge member, and one of a cam profile on the outer peripheral surface; a movable cam configured to move about at least a portion of the fixed cam in response to rotation of the second body relative to the first body; and a spring mounted Around the movable cam, it is configured to elastically press the movable cam toward the fixed cam. The mobile terminal device of claim 12, wherein the cam profile of the fixed cam comprises: first and second curved portions, and a stop projection of the movable cam is engaged First and the Within the second curved portion, the second body is allowed to stop at both a closed position and an open position after being rotated by 90°. The mobile terminal device of claim 13, wherein the fixed cam further comprises: a third curved portion, and the stop protruding member of the movable cam is engaged within the third curved portion To allow the stop to be stopped at the open position after the second body is rotated by 180°. The mobile terminal device of claim 14, further comprising: another cam disposed on one of the first and second hinge members having no moving cam, and in a symmetrical manner The configuration is relative to the moving cam such that the spring can surround the two cams. The mobile terminal device of claim 12, wherein the mobile cam further comprises: a scroll wheel configured to contact a cam profile of the fixed cam, and along the fixed type The cam profile of the cam is rolled. The mobile terminal device of claim 12, further comprising: a guiding member formed in one of the first or second hinge members and configured to allow the mobile type The cam moves linearly toward the other cam and away from the other cam. The mobile terminal device of claim 17, wherein the guiding member comprises: a guiding recess having a slit in one of the first and second hinge members Form; A guide projection is formed on the movable cam and configured to be guided among the guide recesses. The mobile terminal device of claim 1, further comprising: a controller configured to change a screen mode of the terminal device according to at least one of a rotation direction and an angle of the second body . The mobile terminal device of claim 19, further comprising: at least one sensor configured to sense at least one of a rotation direction and an angle of the second body, and transmit one Corresponding signals to the controller. The mobile terminal device of claim 12, wherein the cam profile of the stationary cam is formed to allow the second body to be in a clockwise or counterclockwise direction relative to the first body. One direction is rotated.