KR101079833B1 - Hinge device of mobile phone - Google Patents

Abstract

According to an exemplary embodiment of the present invention, a hinge device for a mobile terminal includes a first body having a display portion on a front surface thereof, and a second body having a keypad portion on a front surface thereof, wherein the lengths of the first and second bodies are larger than widths. Long, the first body and the second body are rotated in the width direction about the first and second hinge points, respectively, and the opening and closing of the keypad is made, and when the opening and closing of the keypad unit is configured in the portable terminal facing the user side I) configure a first rotational axis as the first hinge point at the rear center of the first body, and ii) configure a second rotational axis as the second hinge point at the longitudinal side edge of the second body. And iii) interconnecting the first and second rotational shafts via hinge cases, and iii) configuring rotational ratios of the first and second rotational shafts differently.

Handset, qwerty, wide, hinge

Description

Hinge Device for Mobile Device {HINGE DEVICE OF MOBILE PHONE}

An exemplary embodiment of the present invention relates to a hinge apparatus for a portable terminal, and more particularly, to a hinge apparatus for a portable terminal applicable to a wide phone or a qwerty phone.

In general, mobile terminals such as mobile phones, PDAs, notebook computers, and DMB phones are widely used to wirelessly use services such as communication and broadcasting while moving in places other than a fixed location.

The mobile terminal is one of the essential necessities that are indispensable in order to enjoy the convenience of life according to the information age. Especially, the mobile terminal is widely distributed to elementary, middle and high school students and the elderly.

As mentioned above, as the demand and user base rapidly increase in recent years, the portable terminal has been expected to expect a product to which new design or function is given.

The portable terminal includes a main body provided with a keypad and a cover provided with a display panel so as to be mutually open and closed with respect to the main body, and are largely divided into a folding method, a sliding method, and a swing method according to the opening and closing structure of the cover for the main body. Can be.

Among these, the portable terminal that opens and closes the cover by folding is one of the most applied methods in recent years because of various advantages such as ease of use, less trouble, and a stylish design.

The basic structure of the portable terminal for opening and closing the cover by the folding method is configured to rotate the cover up and down from the main body, the upper and lower folding of the cover is implemented through a hinge device.

The folding type hinge device for a portable terminal according to the related art has a structure in which a cover rotates by a predetermined section on the main body, and when the cover is rotated for a certain section, the cover automatically rotates in the remaining section and opens and closes the cover.

However, the hinge device for a folding portable terminal according to the related art is configured to be rotatable vertically in one direction with respect to the main body, and thus has a problem in that there is much inconvenience in using the portable terminal.

That is, in the related art, by rotating the cover in the vertical direction through the hinge device, the cover is suitably configured to perform a unique communication function of the mobile terminal such as voice call and message transmission. There is a disadvantage in that it is somewhat inconvenient to use multimedia services such as watching, watching DMB, and games.

In addition, while the functions of the portable terminal are gradually diversified and high-speed large-capacity file transfer is possible in the related art, it is also inconvenient to input various text information such as long text or e-mail.

Moreover, since a mobile terminal using a folding hinge device displays an image through a display panel in a limited open area of the cover when the cover is opened, the mobile terminal is intended to use a multi-screen service such as a video, a DMB, a game, etc. as a large screen. The situation does not meet the needs of the user.

Exemplary embodiments of the present invention have been created to improve the above problems, and can more conveniently use various multimedia services through a large display panel, and provide various text information such as long text or mail. Provided is a hinge device for a mobile terminal applicable to a wide phone or qwerty phone that can be conveniently input.

Therefore, the hinge device for a mobile terminal according to the exemplary embodiment of the present invention as described above includes a first body having a display portion on the front side and a second body having a keypad portion on the front side, and the length of the first and second bodies is increased. It is relatively longer than the width, the first body and the second body is rotated along the width direction around the first and second hinge points, respectively, the opening and closing of the keypad is made, the display unit when the opening and closing of the keypad is a mobile side As configured in the terminal,

Iii) a first axis of rotation as the first hinge point in the central portion of the rear surface of the first body, and ii) a second axis of rotation as the second hinge point in the longitudinal side edge of the second body; The first and second rotation shafts are connected to each other through a hinge case, and iii) the rotation ratios of the first and second rotation shafts are different from each other.

In the hinge device for a portable terminal, the first and second rotation shafts may interlock with each other and rotate in the same direction.

In the hinge device for the portable terminal, the first and second rotation shafts are disposed in parallel to each other, and may be connected in a vertical direction through a bevel gear having different gear ratios and a bevel pinion gear that meshes with the bevel gear.

The hinge device for a portable terminal may form a gear connection part having four points at which the bevel gear and the bevel pinion gear mesh with each other at both ends of the first and second rotation shafts.

In addition, the hinge device for a portable terminal according to an exemplary embodiment of the present invention includes a first body having a display portion on the front surface and a second body having a keypad portion on the front surface, and the length of the first and second bodies is wide. More relatively long, the first and second bodies are rotated along the width direction around the first and second hinge points, respectively, to open and close the keypad unit, and the display unit faces the user side when the keypad unit is opened and closed. As configured in

Iv) a hinge case, and ii) a first hinge arm rotatably mounted as a pair to the hinge case, the first bevel gear being provided at one end, and the other end being formed at the rear center of the first body. A first rotating shaft fixed to both sides thereof, and iii) disposed in parallel with the first rotating shaft, rotatably mounted as a pair to the hinge case, and having a second bevel gear installed at one end thereof. A second rotation axis fixed to a second hinge arm formed at an edge portion of the second body in the longitudinal direction of the second body with the other end portion interposed therebetween; and iii) a direction perpendicular to the first and second rotation axes. It is arranged as a pair, rotatably mounted to the hinge case, respectively, and bevel pinion gears that are engaged with the first and second bevel gears respectively at both ends are installed; Includes driven shaft.

In the hinge device for the portable terminal, the first and second bevel gears have different gear ratios and may be fixedly mounted to one end portions of the first and second rotation shafts, respectively.

In the hinge device for the portable terminal, the first bevel gear, the bevel pinion gear, and the second bevel gear may satisfy a gear ratio of 9: 14: 8.

The hinge device for a portable terminal may implement click opening and closing of the first and second bodies through a cam unit and an elastic member configured at each of the driven shafts.

In the hinge device for a portable terminal, the cam unit and the elastic member may be configured on the bevel pinion gear side in one diagonal direction with respect to the pair of driven shafts.

In the hinge device for the portable terminal, each driven shaft may be rotatably mounted to a support bracket that can be fixed to the hinge case.

The hinge device for a portable terminal can form a first cam protrusion on each bevel pinion gear as the cam unit.

The hinge device for a portable terminal may include a cam as a cam unit, each of which is in cam contact with the bevel pinion gear in one diagonal direction with respect to the pair of driven shafts and is installed to be linearly movable on the driven shaft. have.

In the hinge device for a portable terminal, the elastic member may be formed as a compression coil spring mounted on the driven shaft between the movable cam and the support bracket and exerting elasticity with the movable cam.

In the hinge device for the portable terminal, each of the movable cams may be mounted to be movable along a guide groove formed in the hinge case, and a second cam protrusion may be provided in contact with the first cam protrusion of each bevel pinion gear. have.

In the hinge device for the portable terminal, the first and second rotation shafts may be rotatably installed on mounting brackets fixed to the hinge case.

In the hinge device for a mobile terminal, a first ring member for supporting the mounting bracket may be mounted to each of the rotation shafts.

The hinge device for a mobile terminal may include a second ring member mounted to each driven shaft to support the support bracket.

In the hinge device for a portable terminal, each of the first rotation shafts may be disposed between the driven shafts with the first bevel gears meshing with the bevel pinion gears.

In the hinge device for the portable terminal, the second bevel gear may be engaged with the bevel pinion gear and disposed outside the respective driven shafts.

In the hinge device for the portable terminal, the hinge case may be formed in the upper end thereof with a mounting groove through which the first hinge arm can be coupled through the first rotation shaft.

In the hinge device for a portable terminal, each of the driven shafts may be formed as a pair of shafts that can be separated and combined with each other along the axial direction.

According to the hinge device for a mobile terminal according to the exemplary embodiment of the present invention as described above, it is possible to employ a large display unit on the first body, and because the display unit always faces the user when opening and closing the first body, Wealth makes it possible to use various multimedia services more conveniently.

In addition, since the first hinge point is formed at the rear center of the first body in the present embodiment, and the second hinge point is formed at the upper end in the longitudinal direction of the second body that meets the lower end in the longitudinal direction of the first body, the first hinge point is formed. And when opening the second body can further maximize the front open area of the second body.

Therefore, in the present embodiment, a keypad of a qwerty keyboard array (preferably 4 arrays) for inputting various character information may be adopted more conveniently, and when a character is input, a finger may interfere with the lower end of the first body in the longitudinal direction. There is no concern, and the keys of the keypad portion can be made larger.

In the present embodiment, when a QWERTY keyboard arrangement capable of touch manipulation is adopted in the display unit, various character information may be conveniently input through touch manipulation of the display unit even when the first body is closed.

In addition, in the present embodiment, the first and second rotation shafts are respectively paired in parallel with each other and connected in the vertical direction to the driven shaft via a bevel pinion gear that meshes with the first and second bevel gears. Gear connection can be configured.

Therefore, in the present embodiment, since a large rotational force can be obtained at a small rotation ratio of the first and second rotation shafts, the durability and operational stability of the portable terminal can be improved.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

1A to 1D are perspective views illustrating an example of a portable terminal to which an exemplary embodiment of the present invention is applied.

Referring to the drawings, the portable terminal 1 to which the exemplary embodiment of the present invention can be applied performs multimedia functions such as text input, DMB, video, game, etc. while basically performing a mobile communication function such as voice / video call and message transmission. An example is a mobile communication terminal that can use a service.

The portable terminal 1 comprises a first body 3 as a cover and a second body 5 as a main body, wherein the first body 3 and the second body 5 are longer than the width. Is made as a relatively long rectangular body.

Here, the first and second bodies 3 and 5 are configured to allow relative rotational movement in the width direction through the hinge device 100 according to the present embodiment.

In the present embodiment, the following various components are described on the basis of the mobile terminal 1 lying in the planar direction, and the upper face may be defined as the front and the lower face as the rear.

In the portable terminal 1, the longitudinal directions of the first and second bodies 3 and 5 may be defined in the left and right directions, and the width directions of the bodies 3 and 5 may be defined in the vertical direction. have.

The definition of such a direction is a relative meaning. Since the direction may vary depending on the position of the mobile terminal 1 with respect to the user, the above-described reference direction is not necessarily limited to the reference direction of the present embodiment.

In this case, a display unit 7 such as a liquid crystal screen or a touch screen is configured on the front surface of the first body 3, and a qwerty capable of inputting alphabets and Korean characters is provided on the front surface of the second body 5. A keypad portion 9 of a keyboard arrangement (preferably at least four arrangements) is configured.

That is, the portable terminal 1 to which the exemplary embodiment of the present invention is applied may include a qwerty phone or a game phone commonly referred to in the art as a wide phone.

However, the exemplary embodiment of the present invention is not particularly limited to that the mobile terminal 1 is applied only to a mobile phone capable of mobile communication as above, but is not limited to a smart phone, PDA, PMP, handheld PC, MP3 / It may be applied to portable electric and electronic devices such as MP4 players, netbooks, notebooks, game consoles, and the like.

The portable electronic device may include a predetermined communication module such as a CDMA module, a Bluetooth module, an infrared communication module (IrDA), a wired / wireless LAN card, and may include a predetermined microprocessor that performs a multimedia playback function such as a game item. It may be provided.

In the portable terminal 1 as described above, the first and second bodies 3 and 5 are positioned in the width direction of the first and second hinge points H1 and H2 through the hinge device 100 according to the present embodiment. The keypad 9 is opened and closed while rotating along each of the vertical directions.

In addition, when the keypad 9 is opened and closed, the portable terminal 1 opens and closes the first and second bodies 3 and 5 such that the display 7 of the first body 3 always faces the user. This is done.

Here, the first hinge point (H1) is formed in the rear center portion of the first body 3, the second hinge point (H2) is the upper edge portion in the longitudinal direction (left and right directions) of the second body (5) Is formed.

To this end, a first hinge arm 4 is formed on the rear surface of the first body 3 along the longitudinal direction (left and right directions), and a groove along the longitudinal direction is formed at the upper edge of the second body 5. On both sides of 9), second hinge arms 8 are formed.

The first and second hinge arms 4 and 8 are for mounting the hinge device 100 according to the present embodiment.

The first hinge arm 4 is connected to the hinge device 100 to form the first hinge point H1 mentioned, and the second hinge arm 8 is connected to the hinge device 100. The second hinge point H2 is mentioned.

Accordingly, in the portable terminal 1, the display 7 of the first body 3 faces the user side in a closed state in which the first body 3 and the second body 5 face each other. An example hinge device 100 is located between the first and second bodies 3, 5 (see FIG. 1A).

In addition, the portable terminal 1 rotates the first and second bodies 3 and 5 at different rotation angles in the same direction (counterclockwise direction) about the first and second hinge points H1 and H2. Away from each other, the rear surface of the first body 3 and the front surface of the second body 5 face each other with the hinge device 100 interposed therebetween, and the display unit 7 of the first body 3 is a user. A part of the keypad part 9 is opened to the side (see FIG. 1B).

In addition, the portable terminal 1 continuously operates as described above, while the first body 3 maintains a predetermined opening angle with respect to the second body 5, and the keypad unit of the second body 5. (9) is fully open.

In this case, the display unit 7 of the first body 3 faces the user side, and the front surface of the second body 5 is completely exposed to the outside, and the hinge device 100 according to the present embodiment includes a first unit. The back face of the body 3 faces each other (see FIGS. 1C and 1D).

Hereinafter, the configuration of the hinge apparatus 100 according to the exemplary embodiment of the present invention which can be applied to the mobile terminal 1 as described above will be described in detail with reference to the drawings and the following drawings.

2 is a perspective view showing a hinge device for a portable terminal according to an exemplary embodiment of the present invention, Figure 3 is a partially exploded perspective view of Figure 2, Figure 4 is a full exploded perspective view of FIG.

Referring to the drawings, the hinge device 100 for a mobile terminal according to an exemplary embodiment of the present invention basically includes a hinge case 10, a first rotation shaft 20, a second rotation shaft 40, It is configured to include a driven shaft (60), which will be described for each configuration as follows.

In this embodiment, the hinge case 10 is provided as a mounting case for mounting the following components.

The hinge case 10 is composed of a front case 11 and a rear case 12 that can be separated and coupled with each other, and these cases 11 and 12 may be coupled to each other through a fastening member JB such as a bolt. .

The hinge case 10 may include a second hinge arm 4 and a second body 5 of the first body 3 through the first and second rotation shafts 20 and 40, which will be described later. It can be rotatably coupled to the hinge arm 8.

Thus, the hinge case 10 forms a mounting groove 13 having a predetermined length to which the first hinge arm 4 can be coupled to the upper end along the longitudinal direction in the drawing.

Here, the lower end portion in the longitudinal direction of the hinge case 10 may be coupled to the groove 9 between the second hinge arms 8.

In this embodiment, the first axis of rotation 20 is for supporting the rotation of the first body 3, the first body 3 to the first hinge arm 4 in the rear center portion of the first body (3) To form a first hinge point H1.

Specifically, the first rotation shaft 20 is provided as a pair, in a state in which the first hinge arm 4 of the first body 3 is coupled to the mounting groove 13 of the hinge case 10, The hinge arm 4 is sandwiched between and fixed to one side and the other side of the hinge arm 4 on the same axis.

The first rotation shaft 20 is rotatably supported at both arm portions of the mounting groove 13 in the hinge case 10.

That is, one end portion of each of the first rotating shafts 20 is fixed to the first mounting bracket 21 fixed to the front case 11 between the front case 11 and the rear case 12 of the hinge case 10. Rotatably coupled.

In this case, the first mounting bracket 21 is positioned at both sides of the mounting groove 13 of the hinge case 10, that is, at both edge portions of the hinge case 10 in the height direction of the hinge case 10. It is disposed, and is fixed to the front case 11 through a fastening member (JB) such as a bolt.

The other end of each of the first rotation shafts 20 is fixed to both sides of the first hinge arm 4 coupled to the mounting groove 13 of the hinge case 10. At this time, each of the first rotation shafts 20 is connected to each other via a connecting rod 23 inside the first hinge arm 4.

As a result, each of the first rotation shafts 20 is rotatably supported at both sides of the mounting groove 13 of the hinge case 10, and the other end thereof is coupled to the mounting groove 13 by a first body ( It is fixed to both sides of the 1st hinge arm 4 of 3).

Accordingly, each of the first rotation shafts 20 is rotatably supported at one end of the hinge case 10, and the other end thereof is fixed to the first hinge arm 4 of the first body 3. As the body 3 rotates, it rotates with the first body 3.

In this embodiment, the first bevel gear 25 as a drive gear is configured at one end of each of the first rotation shafts 20.

The first bevel gear 25 is formed as a straight bevel gear having a toothed stem in a straight shape, and is fixedly installed at one end of the first rotation shaft 20.

In the present embodiment, the second rotation shaft 40 is for supporting the rotation of the second body 5, and the second hinge point H2 is attached to the second hinge arm 8 of the second body 5. Form.

In detail, the second rotation shaft 40 is provided as a pair and is disposed in parallel with the first rotation shaft 20.

The second rotation shaft 40 has the same axis on both side walls of the groove 9 in a state in which the lower end of the hinge case 10 is coupled to the groove 9 in the longitudinal upper end of the second body 5. It is fixedly installed in each phase.

The second rotation shaft 40 is rotatably supported at both sides of the lower end of the hinge case 10, respectively.

That is, one end portion of each of the second rotation shafts 40 is fixed to the second mounting bracket 41 fixed between the front case 11 and the rear case 12 of the hinge case 10 by the front case 11. Rotatably coupled.

In this case, the second mounting bracket 41 is located at both sides of the mounting groove 13 of the hinge case 10, that is, at both edge portions of the hinge case 10 in the height direction of the hinge case 10. It is disposed, and is fixed to the front case 11 through a fastening member (JB) such as a bolt.

The other end of each of the second rotation shafts 40 is fixed to both sides of the second hinge arm 8 to which the lower end of the hinge case 10 is coupled.

As a result, each of the second rotation shafts 40 is rotatably supported on one side of both ends of the hinge case 10 through the second mounting bracket 41, and the other end thereof is the lower end of the hinge case 10. It protrudes from both sides and is fixed to both side walls of the recess 9 of the second body 5.

Accordingly, each of the second rotation shafts 40 is rotatably supported at both ends of the lower end of the hinge case 10, and the other end is fixed to the second hinge arm 8 of the second body 5. , It rotates together with the second body 5.

In this embodiment, a second bevel gear 45 as a drive gear is formed at one end of each of the second rotation shafts 40.

The second bevel gear 45 is formed as a straight bevel gear having a toothed stem in a straight shape, and is fixedly installed at one end of the second rotation shaft 40.

As described above, the first and second rotation shafts 20 and 40 are interlocked with each other through the driven shaft 60 to be described later, rotated in the same direction, and connected through the hinge case 10.

Here, the first and second bevel gears 25 and 45 of the first and second rotation shafts 20 and 40 have different gear ratios, but the first bevel gear 25 is not limited to a specific value as an example. ) Has nine teeth, and the second bevel gear 45 has eight teeth.

On the other hand, on the shaft of the first and second rotary shafts 20 and 40, these rotary shafts 20 and 40 are rotatably coupled to the respective first and second mounting brackets 21 and 41, and the mounting brackets ( First ring members 29 and 49 as E-rings for supporting 21 and 41 are provided, respectively.

In the present embodiment, the driven shaft 60 receives the rotational driving force of the first rotation shaft 20 provided through the first bevel gear 25 of the first rotation shaft 20 and the second bevel of the second rotation shaft 40. It is to the function of transmitting to the second rotation shaft 40 through the gear (45).

On the contrary, the driven shaft 60 transmits the rotational driving force of the second rotating shaft 40 provided through the second bevel gear 45 of the second rotating shaft 40 to the first bevel gear 25 of the first rotating shaft 20. It also serves to transfer to the first rotating shaft (20) through.

These driven shafts 60 are arranged as a pair along a direction perpendicular to each of the first and second rotary shafts 20 and 40 parallel to each other, and are rotatably mounted to the hinge case 10, respectively.

Here, each of the driven shaft 60 is rotatably supported by a support bracket 61 that can be coupled to the hinge case 10.

The support bracket 61 has at least one coupling hole 62 into which the driven shaft 60 can be fitted, preferably formed as a pair along the axial direction of the driven shaft 60, and a fastening member such as a bolt. It is fixedly installed on the front case 11 of the hinge case 10 through the (JB).

That is, the support bracket 61 is fitted into the coupling grooves 18 formed on the inner walls of the front and rear cases 11 and 12 of the hinge case 10, and is connected to the front case 11 through the fastening member JB. It is fixedly installed.

At this time, the second ring member as an E-ring for rotatably coupling the driven shaft 60 to the support bracket 61 on the shaft of each driven shaft 60 and supporting the support bracket 61. 69) is installed.

Each of the driven shafts 60 is configured as a pair of shafts 63 that can be separated from and coupled to each other along the axial direction to facilitate assembly of the support bracket 61.

In this embodiment, at both ends of each driven shaft 60, that is, the upper and lower ends in the drawing, mutually meshes with the first bevel gear 25 of the first rotating shaft 20 and the second of the second rotating shaft 40. A bevel pinion gear 65 meshing with the bevel gear 45 is provided.

The bevel pinion gear 65 is installed to be fixed to the upper and lower ends of each driven shaft 60, is rotatably supported on the hinge case 10, perpendicular to the first and second bevel gears (25, 45). The toothed stem consists of a straight bevel pinion gear in the form of a straight line.

Here, each of the bevel pinion gears 65 has different gear ratios from the first and second bevel gears 25 and 45, but has 14 teeth as an example, which is not limited to a specific value.

That is, in the present embodiment, the first bevel gear 25 of the first rotation shaft 20, the bevel pinion gear 65 of the driven shaft 60, and the second bevel gear of the second rotation shaft 40 as described above. 45) satisfies the gear ratio of 9: 14: 8.

As a result, the first and second rotating shafts 20 and 40 rotate with the first and second bevel gears 25 and 45 interlocked with the bevel pinion gears 65 of the driven shaft 60 and interlocked at different rotation ratios. Done.

In other words, when the first rotation shaft 20 rotates as the rotation of the first body 3, the second rotation shaft 40 is rotated in the same direction as the rotation ratio different from the first rotation shaft 20 through the driven shaft 60. It will rotate.

In the present embodiment, the first and second rotation shafts 20 and 40 are each paired in parallel to each other and bevel pinion gears 65 engaged with the first and second bevel gears 25 and 45. Since it is connected in the vertical direction with the coaxial 60, the gear connecting portion (G1 ~ G4) of four points with respect to the entire hinge device 100 is formed.

In this case, the first rotating shaft 20 is interposed between the first bevel gear 25 and the bevel pinion gear 65 and disposed between each driven shaft 60, and the second rotating shaft 40 is the second bevel. The gear 45 and the bevel pinion gear 65 mesh with each other and are disposed outward of each driven shaft 60.

On the other hand, the hinge device 100 according to the present embodiment, based on a predetermined rotation section (about 160 degrees opening and closing section) of the first and second body (3, 5), the first and second body (3, When 5) is rotated for a predetermined period, the first and second bodies 3 and 5 may be automatically rotated in the remaining sections.

That is, the hinge device 100 opens and clicks the first and second bodies 3 and 5 through the cam unit 70 and the elastic member 80 formed in each driven shaft 60. You can implement a close.

To this end, the cam unit 70 constitutes the bevel pinion gear 65 of the driven shaft 60 as the rotary cam 71, and the cam cam 70 in contact with the bevel pinion gear 65. ).

The bevel pinion gear 65 serving as the rotary cam 71 is provided with a first cam protrusion 73 in the form of a hill and a valley.

The movable cam 75 is formed in a square shape and is cam-contacted with the first cam protrusion 73 of the bevel pinion gear 65 so as to be linearly movable on the driven shaft 60.

Here, the movable cam 75 is installed in cam contact with the bevel pinion gear 65 in one diagonal direction with respect to the pair of driven shaft 60, in the guide groove 19 formed in the hinge case 10 It is mounted so as to reciprocate in the axial direction of the driven shaft 60 along the guide groove 19 without rotation.

In this case, the movable cam 75 forms a second cam protrusion 77 in the form of a hill and a valley in cam contact with the first cam protrusion 73 of the bevel pinion gear 65.

In the above, the elastic member 80 is the movable cam 75 so that the second cam protrusion 77 of the movable cam 75 and the first cam protrusion 73 of the bevel pinion gear 65 can contact each other. It is intended to exert elasticity.

The elastic member 80 is formed as a compression coil spring 81, and is mounted on the driven shaft 60 between the movable cam 75 and the support bracket 61. That is, one end of the elastic member 80 is supported by the mobile cam 75, the other end is supported by the support bracket 61.

Hereinafter, an operating state of the hinge apparatus 100 for a portable terminal according to an exemplary embodiment of the present invention configured as described above will be described in detail with reference to the drawings and the accompanying drawings.

5A to 5C are diagrams for describing an operating state of a hinge device for a portable terminal according to an exemplary embodiment of the present invention.

First, in the present embodiment, the display portion 7 faces the user's side in front of the first body 3, and the rear surface of the first body 3 and the keypad portion 9 of the second body 5 mutually interact with each other. The face state closed (0 degrees) is set as the initial starting point (see FIG. 1A).

Here, as shown in FIG. 5A, the bevel pinion gear 65 of the driven shaft 60 corresponding to the moving cam 75 overcomes the elastic force of the elastic member 80, and the first cam protrusion 73 thereof moves the moving cam ( In (75), it is located in the inclined section of the 2nd cam protrusion (77).

Accordingly, the elastic pressing force of the elastic member 80 acting on the bevel pinion gear 65 is transmitted to the first and second bodies 3 and 5 through the driven shaft 60 and the first and second rotation shafts 20 and 40. And the first and second bodies 3 and 5 are provided with a preload of a predetermined torque as the elastic pressing force acts as a rotational force to rotate in the closing direction with respect to the first and second bodies 3 and 5. do.

Thus, in the present embodiment, since the first and second bodies 3 and 5 are provided with sufficient preload, the play and flow between the first and second bodies 3 and 5 can be minimized.

The hinge case 10 faces the rear surface and the keypad portion 9 between the rear surface of the first body 3 and the keypad portion 9 of the second body 5.

In the closed state in which the first body 3 and the second body 5 face each other as described above, the display unit 7 of the first body 3 faces the user side. Voice / image communication is performed through the touch manipulation of the user, and various multimedia services can be used through the display unit 7 of the large screen.

In this case, if the display unit 7 employs a qwerty keyboard arrangement capable of touch operation, various character information can be conveniently input through the touch operation of the display unit 7.

In such a state, the user pushes the first body 3 up a certain section of the entire rotation section in the upward direction along the width direction of the second body 5 (see FIG. 1B).

Then, the first body 3 is rotated for a predetermined time in a counterclockwise direction about the first rotation shaft 20, and one end of the first rotation shaft 20 is rotatably supported by the hinge case 10. And the other end is fixed to the first hinge arm 4 of the first body 3, so that the first axis of rotation 20 also rotates with the first body 3.

In the above process, as shown in FIG. 5B, as the first rotation shaft 20 rotates counterclockwise, the first bevel gear 25 of the first rotation shaft 20 is bevel pinion gear of the driven shaft 60. Since it engages with 65, the pair of driven shafts 60 rotate in opposite directions along one side direction.

At the same time, since the second bevel gear 45 of the second rotation shaft 40 is engaged with the bevel pinion gear 65 of the driven shaft 60 as the driven shaft 60 rotates in one direction. The second rotation shaft 40 is rotated counterclockwise in the same manner as the first rotation shaft 20.

Therefore, one end of the second rotation shaft 40 is rotatably supported at both ends of the lower end of the hinge case 10, and the other end is fixed to the second hinge arm 8 of the second body 5, The second body 5 is rotated counterclockwise in the same manner as the first body 3 as the rotational force of the second rotation shaft 40.

Here, the first bevel gear 25 of the first rotating shaft 20, the bevel pinion gear 65 of the driven shaft 60 and the second bevel gear 45 of the second rotating shaft 40 are 9: Since the gear ratio of 14: 8 is satisfied, the first and second rotation shafts 20 and 40 rotate at different rotation ratios.

As a result, the first and second bodies 3 and 5 are rotated at different rotation ratios of the first and second rotation shafts 20 and 40, so that the rear surface of the first body 3 and the second body 5 are separated. The front faces face each other, and rotates away from the hinge case 10 at different angles.

During this process, as the driven shaft 60 rotates, the first cam protrusion 73 of the bevel pinion gear 65 is in close contact with the second cam protrusion 77 of the moving cam 75. While slipping, the bending point of the cam protrusion 77 is reached.

Accordingly, the first cam protrusion 73 of the bevel pinion gear 65 presses the mobile cam 75 until the moment when the bending point of the second cam protrusion 77 is reached, and the mobile cam 75 is elastic. The member 80 is maximally compressed and moved along the driven shaft 60.

In the above state, when the user applies a little more force to the first body 3, the first rotation shaft 20 is further rotated as described above, and the first cam projection of the bevel pinion gear 65 73 is out of the bending point of the second cam projection (77).

At that moment, the bevel pinion gear 65 is in a state in which the first cam protrusion 73 is in close contact with the inclined section of the second cam protrusion 77 by the elastic restoring force of the elastic member 80 as shown in FIG. 5C. As it slips, it is engaged with the valley of the second cam protrusion 77.

In the above process, as the first cam protrusion 73 of the bevel pinion gear 65 slips in close contact with the inclined section of the second cam protrusion 77 by the elastic restoring force of the elastic member 80, the driven shaft While the 60 is rotated in one direction, the moving cam 75 moves along the driven shaft 60.

Therefore, the driven shaft 60 is rotated by the elastic restoring force of the elastic member 80, the rotational force of the first and second rotating shaft through the bevel pinion gear 65 and the first and second bevel gears (25, 45) 20 and 40, whereby the first and second rotation shafts 20 and 40 are rotated counterclockwise by the rotation force.

As a result, in this process, the first and second bodies 3 and 5 are rotated in the counterclockwise direction in the remaining sections of the entire rotation section as the rotation of the first and second rotation shafts 20 and 40.

As a result, the first and second bodies 3 and 5 of the portable terminal 1 have such a function, and as shown in FIGS. 1C and 1D, the first body 3 is predetermined with respect to the second body 5. It is open while maintaining the open angle.

Here, the display unit 7 of the first body 3 and the keypad unit 9 of the second body 5 are exposed forward when the user is a reference, and the hinge case 10 is the first body ( They face each other in 3).

Therefore, in the present embodiment, since the display unit 7 maintains a predetermined angle (about 160 degrees) with respect to the keypad unit 9 and the first body 3 is opened, the keypad unit 9 of the qwerty keyboard arrangement is opened. Various character information can be input more conveniently, and through the display unit 7 of the large screen, it is possible to more conveniently use multimedia services such as viewing photos or video files, watching DMB, and playing games.

On the other hand, when the first and the second body (3, 5) is rotated in the counterclockwise direction as described above, when the body (3, 5) is rotated in a closed state (clockwise) in the above process Since it works in the reverse order, more detailed description will be omitted below.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the scope of the invention.

Since these drawings are for reference in describing exemplary embodiments of the present invention, the technical idea of the present invention should not be construed as being limited to the accompanying drawings.

1A to 1D are perspective views illustrating an example of a portable terminal to which an exemplary embodiment of the present invention is applied.

Fig. 2 is an overall perspective view showing a hinge device for a portable terminal according to an exemplary embodiment of the present invention.

3 is a partially exploded perspective view of FIG. 2.

4 is an overall exploded perspective view of FIG. 2.

5A to 5C are diagrams for describing an operating state of a hinge device for a portable terminal according to an exemplary embodiment of the present invention.

<Description of reference numerals for the main parts of the drawings>

10 ... hinge case 11 ... front case

12 ... rear case 20 ... 1st axis of rotation

21 ... 1st mounting bracket 25 ... 1st bevel gear

40 ... 2nd rotating shaft 41 ... 2nd mounting bracket

45 ... 2nd bevel gear 60 ... driven shaft

61 ... support bracket 65 ... bevel pinion gear

70 ... Cam Unit 71 ... Rotary Cam

73 ... 1st cam turning 75 ... mobile cam

77 ... 2nd cam projection 80 ... Elastic member

81 ... compression coil spring

Claims (15)

And a first body having a display portion on the front surface and a second body having a keypad portion on the front surface, wherein the length of the first and second bodies is relatively longer than the width, and the first and second bodies have the first and second hinge points. Opening and closing of the keypad unit is made while rotating along the width direction toward the center, and when the keypad unit is opened and closed, the display unit is configured in the mobile terminal facing the user side, Iii) a first axis of rotation as the first hinge point in the central portion of the rear surface of the first body, and ii) a second axis of rotation as the second hinge point in the longitudinal side edge of the second body; The first and second rotary shafts are connected to each other through a hinge case, ⅳ) The hinge device for a mobile terminal to configure the rotation ratio of the first and second rotary shafts differently. The method according to claim 1, The hinge device for a mobile terminal, wherein the first and second rotation shafts interlock with each other and rotate in the same direction. The method according to claim 1, The first and second rotation shafts are arranged in parallel to each other, the hinge device for a mobile terminal is connected in a vertical direction through a bevel gear having a different gear ratio and a bevel pinion gear meshing with the bevel gear. The method of claim 3, The hinge device for a mobile terminal, wherein the bevel gear and the bevel pinion gear are formed to engage with each other at four ends of the first and second rotation shafts. And a first body having a display portion on the front surface and a second body having a keypad portion on the front surface, wherein the length of the first and second bodies is relatively longer than the width, and the first and second bodies have the first and second hinge points. The keypad is opened and closed while rotating along the width direction, and the display unit is configured in the portable terminal facing the user side when the keypad is opened and closed. Hinge case; A first bevel gear that is rotatably mounted as a pair to the hinge case, the first bevel gear is provided at one end, and the other one end is interposed between a first hinge arm formed at the rear center of the first body; First rotating shaft fixed to both sides of the; The second body is disposed in parallel with the first axis of rotation, rotatably mounted as a pair to the hinge case, and a second bevel gear is installed at one end thereof, and the other end thereof has the hinge case interposed therebetween. A second rotating shaft fixed with a second hinge arm formed at the longitudinal side edge of the second hinge arm; And Bevel pinion gears are disposed as a pair along a direction perpendicular to the first and second rotation shafts, rotatably mounted to the hinge cases, respectively, and engaged with the first and second bevel gears at both ends. Including driven shafts, The first and second bevel gears have different gear ratios and are fixedly mounted to one end of each of the first and second rotation shafts. 6. The method of claim 5, And each of the first bevel gear, the bevel pinion gear, and the second bevel gear satisfy a gear ratio of 9: 14: 8. 6. The method of claim 5, Through the cam unit and the elastic member configured in each of the driven shaft to implement the click (open) and close of the first and second body, And the cam unit and the elastic member are arranged on the bevel pinion gear side in a diagonal direction with respect to the pair of driven shafts. 8. The method of claim 7, Each said driven shaft, The hinge device for a mobile terminal rotatably mounted to a support bracket that can be fixed to the hinge case. The method of claim 8, As the cam unit, Forming a first cam protrusion on each of the bevel pinion gears, And a mobile cam which is cam-contacted with the bevel pinion gear in one diagonal direction with respect to the pair of driven shafts and is installed to be linearly movable on the driven shaft. The method of claim 9, The elastic member, And a compression coil spring mounted between the movable cam and the support bracket on the driven shaft and exerting an elastic force with the movable cam. The method of claim 9, Each mobile cam, And a second cam protrusion, which is mounted to be movable along a guide groove formed in the hinge case, and which has a cam contact with a first cam protrusion of each bevel pinion gear. 6. The method of claim 5, The first and second rotation shafts are rotatably installed on mounting brackets fixed by the hinge case, respectively. The hinge device for a mobile terminal, wherein each of the rotary shafts is equipped with a first ring member for supporting the mounting bracket. The method of claim 8, And a second ring member mounted to each of the driven shafts to support the support bracket. 6. The method of claim 5, Each of the first rotational shafts is disposed between the driven shafts with the first bevel gears meshing with the bevel pinion gears; And the second bevel gear is engaged with the bevel pinion gear and is disposed outside the respective driven shafts. 6. The method of claim 5, The hinge case is provided with a mounting groove on the upper end to which the first hinge arm can be coupled through the first rotation shaft, And each of the driven shafts is a pair of shafts that can be separated from and coupled to each other along an axial direction of the driven shaft.

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