WO2010093139A2 - Hinge apparatus for portable terminal - Google Patents

Abstract

An exemplary embodiment of the present invention provides a hinge apparatus for a portable terminal, which rotates a cover by an opening reference angle and 360 degrees in the upward and downward directions with respect to the main body of the portable terminal. For this purpose, the hinge apparatus for the portable terminal comprises: i) a hinge case connected to a first hinge arm arranged at the top of the cover and to a second hinge arm arranged at the top of the main body of the portable terminal; ii) a first hinge shaft and a second hinge shaft which are rotatably arranged in the hinge case with a predetermined spacing, and the ends of which are assembled to the first hinge arm and to the second hinge arm, respectively; iii) a first driving gear and a second driving gear which are fixed on the first hinge shaft and the second hinge shaft, respectively, and which have respective rotating cams integrally formed therewith; iv) a first slave gear rotatably arranged in the hinge case and engaged with the first driving gear; v) a second slave gear rotatably arranged in the hinge case and engaged with the first slave gear and the second driving gear; vi) movable cams arranged at the first and second hinge shafts to be linearly movable in the lengthwise direction of the first and second hinge shafts, and which contact each of the rotating cams; and vii) a first elastic member and a second elastic member mounted on the first and second hinge shafts, respectively, to provide elastic force to the movable cams. The rotating cams have a first male thread portion and a second male thread portion, respectively, with different sizes and heights, wherein said first and second male thread portions correspond with each other on a concentric circle. The movable cams have a first cam portion and a second cam portion integrally formed therewith, respectively, to correspond to the respective rotating cams, and the cam portions have first and second female thread portions, respectively, to engage with the first and second male thread portions.

Description

Hinge device for mobile terminal

An exemplary embodiment of the present invention relates to a hinge device for a portable terminal, and more particularly, to a hinge device for a portable terminal of the folder type to enable the cover to rotate in a vertical direction and the reference opening angle and 360 degrees.

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 is coupled to a main body provided with a keypad and a cover provided with a display panel so as to be open and close to each other, and may be classified into a folding method, a sliding method, and a swing method according to the opening / closing structure of the cover for the main body.

In particular, the portable terminal for opening and closing the cover in the folder method is one of the most applied in recent years because of various advantages such as easy to use, less trouble, and a stylish design.

Such a folder-type portable terminal can open and close the cover in a vertical direction with respect to the main body through a hinge device, the hinge device is composed of a fixed cam, a mobile cam, an elastic member and a hinge shaft, and the like of these components The interaction allows the cover to be opened or closed at a predetermined angle (approximately 150-180).

On the other hand, in recent years, in order to utilize the display of the portable terminal as a relatively large area, the development of a hinge device capable of rotating the cover 360 degrees with respect to the main body is required.

In this industry, two hinge shafts are provided, and a fixed cam, a mobile cam, and an elastic member are mounted on each hinge shaft, and the development of a hinge device including a gear that is engaged with each hinge shaft is immersed.

By the way, in the prior art, when implementing the 360 degrees of the cover with two interlocking gears in a structure in which the axis of the hinge axis is determined, since the distance between the axes becomes the pitch circle of the two gears, an addendum is formed in the pitch circle. When added, the hinge arrangement is larger than the case design of the lid and body.

This can solve about 150 ~ 180 opening of the cover through the design of the cover and the main body case, but because of the size of the hinge device has a problem that the design of the case does not implement the 360 degree operation of the cover.

In addition, since the hinge device of the prior art is formed as a structure in which both ends of each hinge shaft are coupled to the case of the main body and the cover, problems in the operability of the entire device such as the hinge shaft is deformed or the gears are cracked during repeated opening and closing of the cover. It also causes problems.

On the other hand, as the user's taste is diversified, the appearance of the conventional mobile terminals has been developed based on the appearance suitable for performing a communication function such as voice call and message transmission, so it is inconvenient to use a multimedia service. There is this.

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 digital multimedia broadcasting (DMB), video files, and the like.

Exemplary embodiments of the present invention have been created to improve the above problems, and ultimately, the cover of the mobile terminal can be rotated by the reference opening angle and 360 degrees in the vertical direction while promoting structural stability of the entire apparatus. Provided is a hinge device for a mobile terminal.

To this end, the hinge device for a portable terminal according to an exemplary embodiment of the present invention is to rotate the cover with a reference opening angle and 360 degrees in the vertical direction with respect to the main body of the portable terminal, i) the first hinge arm of the upper end of the cover And a hinge case connected to the second hinge arm of the upper end of the main body, and ii) rotatably mounted at a predetermined interval inside the hinge case, and one end of each of the first and second hinge arms is assembled. First and second hinge shafts, iii) first and second drive gears fixedly installed on the first and second hinge shafts, respectively, and having rotary cams integrally formed, and iv) of the hinge case. A first driven gear rotatably installed in the interior, and interlocked with the first driving gear; and v) rotatably installed in the hinge case, and the first driven gear and the second drive. A second driven gear that meshes with a gear, vi) a mobile cam installed on the first and second hinge shafts so as to be linearly movable along a longitudinal direction, and a cam cam contacted with each of the rotary cams, and vii) the first And first and second elastic members respectively mounted on second hinge shafts and exerting elastic force with the movable cams, wherein each of the rotary cams is formed to correspond to each other at different sizes and heights on concentric circles. And a first and a second cam portion, wherein the first and second cam portions corresponding to the respective rotary cams are integrally formed, and each cam portion has a first and second engagement portion with the first and second mountain portions. And a second bone portion.

The hinge device for a mobile terminal may implement a reference opening angle of the cover as 150 to 180 degrees.

In the hinge apparatus for a mobile terminal, when the cover is opened at the reference opening angle range while the cover and the main body face at 0 degrees, the cover is semi-automatic when the cover is opened at 360 degrees at the reference opening angle. (Click) Open can be implemented.

In the hinge device for a portable terminal, when the cover is opened as the reference opening angle and opened 360 degrees from the reference opening angle, the first and second hinge shafts are rotatable to the main body and the cover to the hinge case. Relative rotation may be made at the position where the hinge case is fixed in a supported state.

In the hinge device for a portable terminal, the first and second cam portions may form insertion holes for inserting the first and second hinge shafts, respectively.

In the hinge device for a portable terminal, the hinge case may be formed as a rectangular case shape.

In the hinge device for a portable terminal, the hinge case may include an upper case and a lower case which are mutually coupled through bolts.

In the hinge device for a portable terminal, the hinge case includes a mounting portion for mounting the first and second hinge shafts, and first and second dummy portions partitioned on both sides of the mounting portion with the mounting portion therebetween. Can be done.

In the hinge device for a portable terminal, the mounting portion and the first and second dummy portions may be formed to be partitioned with each other through a partition wall.

In the hinge device for the portable terminal, the first dummy part may support end portions of one side of the first and second hinge shafts.

In the hinge device for the portable terminal, the second dummy part may be connected to the first and second hinge arms.

In the hinge device for the portable terminal, the lower case may form a fastening protrusion to which the bolt can be coupled to the mounting portion and the first and second dummy portions, respectively.

In the hinge device for the portable terminal, the upper case may form a fastening hole corresponding to each of the fastening protrusions.

In the hinge device for the portable terminal, the hinge case protrudes to be connected to the first dummy part, and has first and second through-holes at one side of which one end of the first and second hinge shafts are fitted. can do.

In the hinge device for the portable terminal, the hinge case protrudes to be connected to the second dummy part, and the third and fourth through parts respectively connected to the first and second hinge arms are formed on the other side. Can be.

In the hinge device for the portable terminal, the third and fourth through parts may be formed as rotation center axes connected to the first and second hinge arms, respectively.

In the hinge device for the portable terminal, fixing pieces fixed to the first and second hinge arms through pins may be installed at one end of the first and second hinge shafts, respectively.

In the hinge device for a portable terminal, the second dummy part may be equipped with a flexible printed circuit for electrically connecting the circuit device inside the main body and the cover.

In the hinge device for the portable terminal, the second dummy part may form a pair of support protrusions for supporting the flexible printed circuit.

In the hinge device for a portable terminal, the flexible printed circuit includes first and second portions drawn out through the third and fourth through portions, respectively, and a third portion connecting the first and second portions. Can be.

In the hinge device for a portable terminal, the first and second drive gears are insert injection molded and may be integrally formed on the first and second hinge shafts, respectively.

The hinge device for a mobile terminal may further include a support bracket installed inside the hinge case to rotatably support the other end portions of the first and second hinge shafts.

In the hinge device for the portable terminal, the support bracket is formed integrally with the first block and the first block fastened to the hinge case, and the other ends of the first and second hinge shafts are rotatably fitted. It may be composed of a second block formed with the first and second through holes.

The hinge device for a mobile terminal is installed at the other end of the first and second hinge shafts protruding through the first and second through holes, and the first and second hinge shafts are respectively disposed in the second block. It may further comprise an E-ring for rotatably engaging.

The hinge device for a portable terminal may further include first and second holders mounted to the first and second hinge shafts to rotatably support the first and second driven gears.

In the hinge device for a portable terminal, each holder includes a pair of mounting holes in which the first and second hinge shafts are rotatably fitted, and both ends of the rotation shafts of the first and second driven gears are rotatably fitted. The losing can form a pair of mounting grooves.

In the hinge device for the portable terminal, the first drive gear may include a first gear part engaged with the first driven gear, and the rotation cam may be integrally formed with the first gear part.

In the hinge device for the portable terminal, the second driving gear may include a second gear part engaged with the second driven gear, and the rotation cam may be integrally formed with the second gear part.

In the hinge device for the portable terminal, the first holder may be mounted between the first and second gear parts and the respective rotary cams.

In the hinge device for a portable terminal, the second holder may be mounted on end portions of the first and second gear parts.

In the hinge device for the portable terminal, the mounting portion has a first support groove for supporting the rotation of the first driven gear is formed in the lower case, a second for supporting the rotation of the second driven gear in the upper case Support grooves may be formed.

In the hinge device for a portable terminal, the mounting portion may be formed with a position regulating groove which is connected to the first support groove to regulate the position of any one of the first and second holders.

In the hinge device for a portable terminal, any one of the first and second holders may have a position regulating protrusion corresponding to the position regulating groove.

In the hinge device for the portable terminal, the first mountain portion may be formed to protrude to the outer peripheral edge side of each of the rotary cam.

In the hinge device for the portable terminal, the second mount portion may be formed to protrude in correspondence to outer peripheral surfaces of the first and second hinge shafts with a size and height relatively smaller than that of the first mount portion.

In the hinge device for a portable terminal, the first valley portion may be formed at an outer peripheral edge side of each cam portion corresponding to the first mountain portion.

In the hinge device for a portable terminal, the second valley portion may be formed at an edge of an insertion hole of each cam portion corresponding to the second hill portion.

According to the hinge device for a mobile terminal according to the exemplary embodiment of the present invention as described above, the cover can be rotated by a reference opening angle and 360 degrees while the cover and the main body face at 0 degrees, and thus the convenience of use. Can be improved.

In the present embodiment, it is possible to secure a competitive advantage in the industry by satisfying the desire of the consumer who wants to use the display unit of the portable terminal in a relatively wide range.

In addition, in the present embodiment, when the distance between the axes of the first and second hinge shafts is determined to be the same as in the prior art, since the first and second driving gears are connected via the first and second driven gears, unlike the prior art, It is possible to implement a small size of the drive gear, it is possible to reduce the size and thickness of the hinge device, the 360-degree operation of the mobile terminal is made stable.

In the present embodiment, since the first and second hinge shafts rotate relative to each other through the first and second driving gears and the first and second driven gears, structural stability of the portable terminal can be improved.

In addition, in the present embodiment, since the first and second cam portions of the first and second rotary cams and the mobile cam are respectively configured as dual dual cams, sufficient preload is applied to the cover and the main body when the cover and the main body are implemented at 0 and 360 degrees. Can be provided.

Therefore, in the present embodiment, when the cover and the main body are closed at 0 degrees or open at 360 degrees, even if the mobile terminal is laid horizontally, the cover or the main body can be prevented from being opened due to its own weight through sufficient preload. As a result, the marketability of the mobile terminal can be further maximized.

In this embodiment, one end of the first and second hinge shafts is fastened to the main body and the cover, and the first to fourth through-holes of the hinge case are formed as a dummy supporting the relative rotation of the main body and the cover. There is no need to assemble separately, which simplifies the assembly process and parts.

Moreover, since the first to fourth penetrating portions as the dummy can absorb the impact of opening and closing the main body and the cover, the first and second hinge shafts are prevented from being deformed by the impact or the driving gear and the driven gear are damaged. can do.

Therefore, in this embodiment, it is possible to solve the problem of the operability of the hinge device due to the deformation of the first and second hinge shafts and the damage of the gears.

In addition, in the present embodiment, since the flexible printed circuit can be mounted through the second dummy part of the hinge case, the flexible printed circuit can be easily mounted and wired.

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.

1 is a perspective view illustrating an example of a portable terminal to which a hinge device is operated according to an exemplary embodiment of the present invention.

FIG. 2 is a diagram illustrating states of operation modes of a portable terminal to which a hinge apparatus for a portable terminal according to an exemplary embodiment of the present invention is applied.

3 is a perspective view illustrating a hinge device for a portable terminal according to an exemplary embodiment of the present invention.

4 is a partially exploded perspective view showing a hinge device for a mobile terminal according to an exemplary embodiment of the present invention.

5 is an exploded perspective view showing a hinge device for a mobile terminal according to an exemplary embodiment of the present invention.

6 is a cross-sectional view illustrating a hinge device for a mobile terminal according to an exemplary embodiment of the present invention.

7 is a bottom configuration diagram of an upper case in a hinge case applied to a hinge apparatus for a portable terminal according to an exemplary embodiment of the present invention.

FIG. 8 is a diagram illustrating first and second driving gear portions applied to a hinge device for a portable terminal according to an exemplary embodiment of the present disclosure.

9 is a plan view illustrating a first holder applied to a hinge apparatus for a portable terminal according to an exemplary embodiment of the present invention.

10 is a plan view illustrating a second holder applied to a hinge apparatus for a portable terminal according to an exemplary embodiment of the present invention.

11 is a diagram illustrating a mobile cam applied to a hinge device for a portable terminal according to an exemplary embodiment of the present invention.

FIG. 12 is a view for explaining a first mode in a state in which a lid and a main body face each other as 0 degrees in a hinge device for a portable terminal according to an exemplary embodiment of the present invention.

FIG. 13 is a view for explaining a second mode in which a lid is opened as a reference opening angle in a state in which the lid and the main body face 0 degrees in the hinge apparatus for a portable terminal according to an exemplary embodiment of the present invention.

14 is a view for explaining the operation of the drive gear and the driven gear in the second mode in the hinge device for a portable terminal according to an exemplary embodiment of the present invention.

FIG. 15 is a diagram for describing a third mode in which a lid is opened by 360 degrees at a reference open angle in the hinge device for a mobile terminal according to an exemplary embodiment of the present disclosure.

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. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

1 is a perspective view illustrating an example of a portable terminal to which a hinge device is operated according to an exemplary embodiment of the present invention.

Referring to the drawings, the portable terminal 1 to which the hinge device 100 according to the exemplary embodiment of the present invention is applied basically includes a main body 2 and a cover 3.

Examples of such a mobile terminal 1 include a general mobile phone of a vertical opening / closing method (commonly referred to in the art as a “folder type”) in which the cover 3 rotates in the vertical direction with respect to the main body 2.

Here, the main body 2 and the cover 3 is formed as a rectangular body having a length longer than the width, the cover 3 is the width relative to the main body 2 through the hinge device 100 according to the present embodiment. It is mounted so that it can rotate up and down in a direction.

In this case, the main body 2 is provided with a keypad portion 5, preferably the keypad portion 5 is formed as a qwerty type keypad having a keyboard arrangement capable of inputting alphabets and Korean characters (Fig. 2). Reference).

In addition, the cover 3 includes a display unit 7 such as a liquid crystal screen, a touch screen, and the like, wherein the display unit 7 is closed when the cover 3 is closed with respect to the body 2. It faces the keypad part 5 (refer FIG. 2).

That is, the portable terminal 1 to which the exemplary embodiment of the present invention is applied may include a so-called qwerty phone or a game phone.

In the present specification, the portable terminal 1 is placed in the width direction and is viewed based on the front view. Hereinafter, the surface facing the user may be defined as the front surface.

In addition, below, the longitudinal direction of the main body 2 and the cover 3 can be defined in a left-right direction, and the width direction can be defined in an up-down direction.

That is, the main body 2 and the cover 3 of the portable terminal 1 are formed as a rectangular body having a relatively long length in the left and right directions than the width in the vertical direction.

However, the definition of such a direction is a relative meaning. When the portable terminal 1 is placed in the longitudinal direction, the width direction may be defined in the left and right directions, and the length direction may be defined in the vertical direction. The reference direction is not necessarily limited to the reference direction of this embodiment.

On the other hand, the mobile terminal 1 is the cover 3 is rotated in the vertical direction through the hinge device 100 according to an exemplary embodiment of the present invention, the reference opening angle (θ): , 150 to 180 degrees), preferably 180 degrees (see Fig. 2).

In addition, the portable terminal 1 has a structure in which the lid 3 can be opened as 360 degrees while rotating upward in the reference open angle state (θ) (see FIG. 2).

Accordingly, the operation mode of the portable terminal 1 may be divided into a first mode M1, a second mode M2, and a third mode M3 as shown in FIG. 2.

The first mode M1 refers to a case in which the cover 3 faces the keypad portion 5 of the main body 2 (0 degrees), and the second mode M2 refers to the cover 3 in the first mode. It means the case of opening as the reference opening angle θ at M1.

In addition, the third mode M3 refers to a case in which the cover 3 is opened at 360 degrees at the reference opening angle θ of the second mode M2.

In order to implement the respective operation modes M1 to M3 as described above, as shown in FIGS. 1 and 2, the portable terminal 1 integrally forms the first hinge arm 8 at the upper end of the cover 3. Doing.

At this time, the first hinge arm 8 is formed along the longitudinal direction (left and right directions) at the upper end of the lid 3.

Moreover, although the 2nd hinge arm 9 is integrally formed in the upper end part of the main body 2 corresponding to the said 1st hinge arm 8, it is arrange | positioned in parallel with the 1st hinge arm 8, respectively.

Here, the first hinge arm (8) and the second hinge arm (9) are for configuring the hinge device 100 according to an exemplary embodiment of the present invention, the groove for mounting the hinge device 100 Provides a form of mounting space.

Therefore, the portable terminal 1 to which the exemplary embodiment of the present invention is applied has a reference opening angle (first mode) in a state in which the lid 3 faces the keypad portion 5 of the main body 2 (first degree). θ), and in this state can be opened 360 degrees (third mode).

Thus, the user can use a general mobile communication function in a state in which the cover 3 is opened at the reference opening angle θ, and text information, images (pictures, videos) in a state in which the cover 3 is opened by 360 degrees. ) Information and terrestrial broadcasting such as terrestrial broadcasting can be conveniently used.

An exemplary embodiment of the present invention is not particularly limited to that the mobile terminal 1 as described above is applied only to a general mobile phone capable of mobile communication.

That is, the portable terminal 1 according to the exemplary embodiment of the present invention is a portable digital assistant (PDA), a smart phone, a hand held PC, an MP3 / MP4 player, a game machine, a laptop, or the like. It can also be applied to electrical and electronic devices.

The portable electronic device may include a predetermined communication module such as a code division multiplexing access (CDMA) module, a Bluetooth module, an infrared communication module (IrDA), a wired / wireless LAN card, and perform a multimedia play function such as a game item. May be provided with a microprocessor.

Hereinafter, the configuration of the hinge device 100 according to the exemplary embodiment of the present invention applied to the portable terminal 1 will be described in detail with reference to FIGS. 3 to 6.

3 is a perspective view illustrating a hinge device for a mobile terminal according to an exemplary embodiment of the present invention, FIG. 4 is a partially exploded perspective view of FIG. 3, FIG. 5 is a full exploded perspective view of FIG. 3, and FIG. 6 is FIG. 3. Is a cross-sectional configuration diagram.

Referring to the drawings, the hinge device 100 for a portable terminal according to an exemplary embodiment of the present invention, basically, the hinge case 110, the first and second hinge shafts (210, 250), and the first and It comprises a second drive gear (310, 350), the first and second driven gear (410, 450), the moving cam 510, and the first and second elastic members (610, 650), If this is described by configuration as follows.

In the present embodiment, the hinge case 110 is for mounting and accommodating the following components, by means of which the first hinge arm 8 of the main body 2 (see FIG. 1 below). And a second hinge arm 9 (see FIG. 1 below) of the lid (3: see FIG. 1 below).

The hinge case 110 is provided with various elements such as protrusions, ribs, grooves, holes, etc. for substantially supporting the components.

The hinge case 110 is formed in the form of a rectangular case disposed along the longitudinal direction between the main body 2 and the upper end of the cover 3.

In addition, the hinge case 110 includes an upper case 111 and a lower case 112 that are mutually coupleable through the bolt B.

The upper case 111 and the lower case 112 are configured to correspond to each other, and will be described below by taking the lower case 112 as an example for convenience.

Here, the hinge case 110 may be made in the same internal structure of the upper case 111 and the lower case 112 in consideration of the ease of forming and manufacturing, and may be made as some other structure in consideration of the mounting of the following components. It may be possible to know in advance.

The lower case 112 is provided with a mounting part 121 for mounting the following components and first and second dummy parts 131 and 141.

The mounting part 121 and the first and second dummy parts 131 and 141 are formed as spaces partitioned independently from each other, and are partitioned by partition walls 114.

The mounting part 121 is for mounting the first and second hinge shafts 210 and 250, and the first dummy part 131 supports one end of the first and second hinge shafts 210 and 250. The second dummy part 141 is for mounting the flexible printed circuit 910 to be described later.

In this case, the first and second dummy parts 131 and 141 are partitioned to both sides of the mounting part 121 along the longitudinal direction of the hinge case 110 with the mounting part 121 interposed therebetween. It is connected to the second hinge arms 8, 9.

In the lower case 112, the first fastening protrusions 122, 132, and 142, to which the bolt B may be coupled, are attached to the bottom surfaces of the mounting part 121 and the first and second dummy parts 131 and 141. Each is formed.

Each of the first fastening protrusions 122, 132, and 142 is provided with fastening grooves 123, 133, and 143 to which the bolt B is screwed.

In response to each of the first fastening protrusions 122, 132, and 142, a plurality of fastening holes 116 into which the bolt B may be inserted are formed in the upper case 111.

Here, as shown in FIG. 7, a second fastening protrusion 124 connected to each of the fastening holes 116 in correspondence with the first fastening protrusions 122, 132, and 142 on the inner bottom surface of the upper case 111. 134 and 144 are formed.

As a result, in the present embodiment, the first fastening protrusions 122, 132, and 142 of the lower case 112 and the second fastening protrusions 124, 134, and 144 of the upper case 111 are aligned with each other. To the fastening holes 116 to bind to the fastening grooves 123, 133, and 143 of the first fastening protrusions 122, 132, and 142, the hinge case 110 may be configured as described above. Will be.

The first dummy part 131 forms a pair of round grooves 135 (see FIG. 5) in the partition wall 114 for supporting one end portions of the first and second hinge shafts 210 and 250, respectively. .

The second dummy part 141 includes a pair of support protrusions 145 for supporting the flexible printed circuit 910 which will be described later, and these support protrusions 145 are formed to protrude from the bottom surface. It is formed to be spaced apart from each other along the longitudinal direction of the lower case (112).

Meanwhile, the hinge case 110 forms an inner space corresponding to the mounting part 121 and the first and second dummy parts 131 and 141 while the upper case 111 and the lower case 112 are coupled to each other. First and second through parts 151 and 152 protruding to be connected to the first dummy part 131 are formed on one side thereof.

In addition, third and fourth through parts 153 and 154 protruding to be connected to the second dummy part 141 are formed on the other side of the hinge case 110.

Here, the first through fourth through parts 151, 152, 153, and 154 have circular holes and are formed as cylindrical protrusions interconnected with the holes.

In this case, the first and second through parts 151 and 152 are portions through which one end portions of the first and second hinge axes 210 and 250 penetrate and are drawn out to the outside, respectively, and the first and second hinge arms. It is connected to (8, 9), respectively, and serves to support the relative rotation of the body (2) and the cover (3).

The third and fourth through parts 153 and 154 are connected to the first and second hinge arms 8 and 9, respectively, to support relative rotation of the main body 2 and the cover 3. It is formed as the rotation center axis 155,156.

In the present embodiment, the first hinge shaft 210 is rotatably mounted to the mounting portion 121 inside the hinge case 110, and corresponds to the first hinge arm 8 to adjust the length direction of the cover 3. Are arranged accordingly.

Here, one end portion of the first hinge shaft 210 partially protrudes through the first through part 151 of the hinge case 110 while being supported by the first dummy part 131.

That is, the first hinge shaft 210 is disposed in the mounting portion 121, and the first penetrating portion of the hinge case 110 is rotatably supported by one side round groove 135 of the first dummy portion 131. It is mounted to be pulled out of the hinge case 110 through the unit 151.

One end of the first hinge shaft 210 is rotatably supported by the first through part 151 and coupled to the first hinge arm 8.

To this end, at one end of the first hinge shaft 210, a first fixing piece 211 is installed to engage with the first hinge arm 8, and the fixing piece 211 is commonly referred to in the art as a "strut ( strut).

The first fixing piece 211 is fixedly installed at one end of the first hinge shaft 210 through the first coupling pin 213 and is coupled to the first hinge arm 8 through a fastening bolt (not shown). do.

In addition, a first ring groove 215 is formed in the outer circumferential direction at the other end portion of the first hinge shaft 210.

In the present embodiment, the second hinge shaft 250 is rotatably mounted to the mounting portion 121 inside the hinge case 110, and corresponds to the second hinge arm 9 to adjust the longitudinal direction of the main body 2. Accordingly, the first hinge shaft 210 is disposed in parallel with each other at a predetermined interval.

Here, one end of the second hinge shaft 250 is partially protruded through the second through part 152 of the hinge case 110 while being supported by the first dummy part 131.

That is, the second hinge shaft 250 is rotatably supported by the other round groove 135 of the first dummy part 131 and through the second through part 152 of the hinge case 110. It is mounted to be pulled out of the hinge case 110.

One end of the second hinge shaft 250 is rotatably supported by the second through portion 152 and coupled to the second hinge arm 9.

To this end, at one end of the second hinge shaft 250, a second fixing piece 251 is installed to engage with the second hinge arm 9, which is commonly referred to in the art as a " strut " strut).

The second fixing piece 251 is fixedly installed at one end of the second hinge shaft 250 through the second coupling pin 253, and is coupled to the second hinge arm 9 through a fastening bolt (not shown). do.

In addition, a second ring groove 255 is formed in the outer circumferential direction at the other end of the second hinge shaft 250.

Here, the first and second hinge shafts (210, 250), as shown in Figure 2, when the cover 3 is opened as a reference opening angle (θ), when the 360 degree opening at the reference opening angle (θ) In a state in which the main body 2 and the cover 3 are rotatably supported by the hinge case 110, the relative rotation operation is performed at the position where the hinge case 110 is fixed.

Configurations for the rotational operation of the first and second hinge shafts 210 and 250 will be described in more detail later.

On the other hand, the mounting portion 121 of the hinge case 110 is provided with a support bracket 710 for rotatably supporting the other one end of the first and second hinge shafts (210, 250).

The support bracket 710 has a structure in which the first block 721 and the second block 731 are integrally formed.

Here, the first block 721 is fixed to the bottom surface of the mounting portion 121 in the lower case 112 of the hinge case 110 to be fixed through the bolt (B).

The first block 721 includes a fastening hole 722 for fastening the bolt B, and an insertion hole 723 into which the first fastening protrusion 122 of the mounting part 121 mentioned above is fitted. Is formed.

In order to fasten the first block 721 to the bottom surface of the mounting portion 121 as a bolt B, a third fastening protrusion 161 corresponding to the fastening hole 722 is formed on the bottom surface of the mounting portion 121. Are formed to protrude.

The third fastening protrusion 161 forms a fastening groove 162 to which the bolt B can be engaged. At this time, the third fastening protrusion 161 is fitted to the bottom surface of the first block 721, for this purpose, a fixing groove (not shown) connected to the fastening hole 722 is formed on the bottom surface.

Accordingly, the support bracket 710 inserts the first fastening protrusion 122 of the mounting portion 121 into the insertion hole 723 and inserts the third fastening protrusion 161 into the fixing groove (not shown). 162 and the fastening hole 722 are aligned, and when the bolt (B) is inserted into the fastening hole 722 to bind to the fastening groove 162, it is firmly fastened to the bottom surface of the mounting portion 121.

The second block 731 is formed integrally with the first block 721 and is disposed along the width direction of the mounting portion 121.

The second block 731 is formed with first and second through holes 732 and 733 to which the other ends of the first and second hinge shafts 210 and 250 are rotatably fitted.

The first and second through holes 732 and 733 are connected to a pair of cylindrical protrusions 734 and 735 integrally formed in the second block 731, respectively. It is formed as a support protrusion for supporting the other one end of the first and second hinge shafts (210, 250).

Meanwhile, in the present embodiment, an E-ring 750 for rotatably coupling the other ends of the first and second hinge shafts 210 and 250 to the second block 731 is provided.

The E-ring 750 is provided at the other end of the first and second hinge shafts 210 and 250, respectively, which protrudes through the first and second through holes 732 and 733 of the second block 731. Combined.

That is, the E-ring 750 is installed in the first and second ring grooves 215 and 255 formed at the other ends of the first and second hinge shafts 210 and 250, respectively.

Accordingly, one end of each of the first and second hinge shafts 210 and 250 may be rotatably supported by the first dummy part 131 of the hinge case 110, respectively. Protruding to the outside of the hinge case 110 through 151, 152, respectively.

 The other ends of the first and second hinge shafts 210 and 250 pass through the first and second through holes 732 and 733 of the second block 731, respectively. E-rings 750 are installed at 215 and 255 so as to be rotatably coupled to the support bracket 710.

In this embodiment, the first drive gear 310 is installed to be fixed on the first hinge shaft (210).

The first drive gear 310 is insert injection molded, as shown in FIG. 8, and is integrally formed on the first hinge shaft 210.

The first drive gear 310 includes a first gear part 311 and a first rotary cam 321 integrally formed with the first gear part 311.

The first gear 311 is formed on one side of the body in a circular body, and forms a plurality of teeth on the outer peripheral surface of the one side portion.

And, the first rotary cam 321 is formed on the other side of the body at a predetermined interval with the first gear portion 311 bar, made of a cam of a circular body protruding to the outer peripheral surface of the other side.

The first rotary cam 321 is a double cam protrusion, and the first and second mountain parts 323a and 323b are formed to correspond to each other at 180 degree intervals.

Here, the first and second ridges 323a and 323b are formed to correspond to each other on the concentric circles of the circular body as mentioned above with different sizes and heights.

That is, the first peak portion 323a is formed to be relatively larger in size and height than the second peak portion 323b, and is provided on the outer circumferential edge (edge of the circular body) of the first rotary cam 321. It is formed to protrude in a certain section.

In addition, since the size and height of the second peak portion 323b are relatively smaller than those of the first peak portion 323a, the second rotary cam 321 corresponds to the outer circumferential surface of the first hinge shaft 210. Is formed to protrude in a predetermined section on the inner peripheral edge of the.

In the present embodiment, the second drive gear 350 is fixedly installed on the second hinge shaft 250. The second drive gear 350 is insert injection molded as shown in FIG. 8 and is integrally formed on the second hinge shaft 250.

The second drive gear 350 includes a second gear part 351 and a second rotary cam 361 integrally formed with the second gear part 351.

The second gear portion 351 is formed on one side of the body in a circular body, and forms a plurality of teeth on the outer peripheral surface of the one side portion.

At this time, it is preferable that the teeth of the second gear part 351 are formed as the same number of teeth as the electric first gear part 311.

In addition, the second rotary cam 361 is formed on the other side of the body at a predetermined interval with the second gear unit 351, and is formed as a cam of a circular body protruding to the outer peripheral surface of the other side.

The second rotary cam 361 is a double cam protrusion, and the first and second mountain parts 363a and 363b are formed to correspond to each other at 180 degree intervals.

In the present specification, the configuration of the second rotary cam 361 is the same as the configuration of the first rotary cam 321 mentioned. Therefore, the terms of the first and second ridges 363a and 363b are the same as those of the first and second ridges 323a and 323b of the first rotary cam 321, and the reference numerals are different from each other. Make it clear in advance.

Here, the first and second ridges 363a and 363b are formed to correspond to each other as different sizes and heights on the concentric circles of the circular body as mentioned above.

That is, the first peak portion 363a is formed to be relatively larger in size and height than the second peak portion 363b, and is provided on the outer circumferential edge (edge of the circular body) of the second rotary cam 361. It is formed to protrude in a certain section.

In addition, since the size and height of the second peak portion 363b are relatively smaller than those of the first peak portion 363a, the second rotating cam 361 corresponds to the outer circumferential surface of the second hinge shaft 250. Is formed to protrude in a predetermined section on the inner peripheral edge of the.

In the present embodiment, the first driven gear 410 (the driven gear is commonly referred to as "idle gear" in the art) is a hinge case (corresponding to the first gear portion 311 of the first drive gear 310). The inside of the 110, preferably mounted to the mounting portion 121 is rotatably installed.

The first driven gear 410 is the center of the first and second hinge shafts 210 and 250 between the first and second gear parts 311 and 351 of the first and second driving gears 310 and 350. It is placed below the virtual line connecting the.

Here, the first driven gear 410 is formed so that the first rotating shaft 411 protrudes at both ends thereof.

The first driven gear 410 is meshed with the first gear 311 of the first driving gear 310, and is rotatably mounted in a direction opposite to the rotational direction of the first hinge shaft 210. .

In the present embodiment, the second driven gear 450 is rotatably installed in the mounting portion 121 of the hinge case 110 in correspondence with the second gear portion 351 of the second driving gear 350.

The second driven gear 450 is the center of the first and second hinge shafts 210 and 250 between the first and second gear parts 311 and 351 of the first and second driving gears 310 and 350. It is placed above the virtual line connecting the.

Here, the second driven gear 450 is formed so that the second rotating shaft 451 protrudes at both ends thereof.

The second driven gear 450 is mounted to be mutually meshed with the first driven gear 410 and the second gear part 351, and rotates in a direction opposite to the rotation direction of the first driven gear 410. , And transmits the rotational force to the second hinge shaft 250 through the second gear unit 351.

That is, when the first gear part 311 of the first driving gear 310 is rotated in the forward direction by the rotation of the first hinge shaft 210 according to the rotation of the lid 3, the first driven gear 410 is rotated. It rotates in the reverse direction, and the second driven gear 450 rotates in the forward direction.

Therefore, since the second gear part 351 of the second driving gear 350 is meshed with the second driven gear 450, the second hinge shaft 250 is opposite to the rotation direction of the first hinge shaft 210. Rotate in reverse direction.

Meanwhile, first and second support grooves 171 and 172 supporting rotation of the first and second driven gears 410 and 450 are formed in the mounting portion 121 of the hinge case 110.

The first support groove 171 is formed in the bottom surface of the mounting portion 121 of the lower case 112 in correspondence with the first driven gear 410, the outer surface of the first driven gear 410 on the bottom surface Rounded as the corresponding curvature.

In addition, as shown in FIG. 7, the second support groove 172 is formed on the inner bottom surface of the upper case 111 in correspondence with the second driven gear 450, and the second driven gear ( Rounded as a curvature corresponding to the outer diameter of 450).

On the other hand, in this embodiment, first and second holders 810, 850 are provided for rotatably mounting the first and second driven gears 410, 450.

The first holder 810 is mounted on the first and second hinge shafts 210 and 250, and is disposed in a direction perpendicular to the mounting portion 121 of the hinge case 110, and the first and second driving gears. It is installed in a circular body between each gear portion (311, 351) of the (310, 350) and each rotary cam (321, 361).

In this case, between the gears 311 and 351 and the rotary cams 321 and 361 means between one end of the gears 311 and 351 and one end of the rotary cams 321 and 361.

As illustrated in FIG. 9, the first holder 810 forms a pair of first mounting holes 811 into which the first and second hinge shafts 210 and 250 are rotatably fitted.

The first mounting hole 811 may be fitted with the first and second hinge shafts 210 and 250, and may be disposed between the respective gear parts 311 and 351 and the rotary cams 321 and 361. It is formed as a size corresponding to the circular body.

In addition, the first holder 810 is a pair of first mounting grooves in which one end portions of the first and second driven shafts 411 and 451 of the first and second driven gears 410 and 450 are rotatably fitted, respectively. 813 is formed.

The second holder 850 is mounted on the first and second hinge shafts 210 and 250 as a shape corresponding to the first holder 810 and is installed at the other end of each gear part 311 and 351. do.

As shown in FIG. 10, the second holder 850 forms a pair of second mounting holes 851 in which the first and second hinge shafts 210 and 250 are rotatably fitted, respectively.

The second mounting holes 851 are formed to have sizes corresponding to outer diameters of the first and second hinge shafts 210 and 250.

In addition, the second holder 850 is a pair of second portions in which the other end portions of the first and second rotating shafts 411 and 451 of the first and second driven gears 410 and 450 are rotatably fitted, respectively. The mounting groove 853 is formed.

In the present embodiment, the second holder 850 forms a position regulating protrusion 855 for regulating its position with respect to the lower case 112.

The position regulating protrusion 855 is formed to protrude in a square shape on the bottom surface side of the second holder 850.

Correspondingly, a position regulating groove 181 (see FIG. 5) is formed on the bottom surface of the mounting case 121 of the lower case 112 to substantially form a coupling with the position regulating protrusion 855.

Here, the position regulating groove 181 is formed to be connected to the first support groove 171 as mentioned.

As a result, the second holder 850 has a position-adjusting protrusion 855 formed in the position-regulating groove 181 in the form of a coupling, and thus, the first and second hinge shafts 210 and 250 and the first and second driven members. The position is fixed in the lower case 112 while supporting the gears 410 and 450.

In the present embodiment, the movable cam 510 is in contact with the first and second rotary cams 321 and 361, and the cams 510 have a constant rotational force according to the rotation of the cover 3. Is to provide.

The movable cam 510 is disposed between the second block 731 of the support bracket 710 and the first and second rotary cams 321 and 361, and the first and second hinge shafts 210 are mentioned. , 250 is mounted so as to linearly reciprocate along the longitudinal direction.

The mobile cam 510 integrates the first and second cam portions 511 and 531 corresponding to the respective rotary cams 321 and 361 of the first and second driving gears 310 and 350, as shown in FIG. 11. To form.

That is, the mobile cam 510 is provided with a cam body 501 disposed in a vertical direction to the mounting portion 121 of the hinge case 110, the cam body 501 corresponding to the first rotary cam 321 The first cam portion 511 is formed on one side of the second cam portion 511, and the second cam portion 531 is formed on the other side of the cam body 501 to correspond to the second rotary cam 361.

Here, the first and second cam portions 511 and 531 are formed to be symmetrical with each other, and insertion holes 512 and 532 for inserting the first and second hinge shafts 210 and 250, respectively, are formed.

The first cam portion 511 is a dual cam type, a pair of first and second valley portions 523a and 523b meshing with the first and second mountainous portions 323a and 323b of the first rotary cam 321. Are formed respectively.

The first and second bone portions 523a and 523b face each other with respect to the insertion hole 512 and are formed to correspond to each other at 180 degree intervals.

In this case, the first and second valleys 523a and 523b correspond to the first and second hills 323a and 323b of the first rotary cam 321 and are formed in different sizes and heights on concentric circles. do.

That is, the first valley portion 523a is formed to have a relatively larger size and height than the second valley portion 523b in response to the first hill portion 323a of the first rotary cam 321. One side of the outer peripheral edge of the 501 is formed to protrude.

In addition, the second valley portion 523b is formed to have a relatively smaller size and height than the first valley portion 523a corresponding to the second hill portion 323b of the first rotary cam 321. It is formed to protrude on the edge side of 512.

The second cam portion 531 is a dual cam type, and a pair of first and second valley portions 533a and 533b meshing with the first and second peak portions 363a and 363b of the second rotary cam 361. To form.

In the present specification, the configuration of the second cam portion 531 is the same as the configuration of the first cam portion 511 as described above.

Therefore, the terms of the first and second bone portions 533a and 533b are the same as the first and second bone portions 523a and 523b of the first cam portion 511, and only the reference numerals are different from each other. Make it clear in advance.

The first and second bone portions 533a and 533b face each other with respect to the insertion hole 532 and are formed to correspond to each other at 180 degree intervals.

In this case, the first and second valleys 533a and 533b correspond to the first and second hills 363a and 363b of the second rotary cam 361 and are formed as different sizes and heights on concentric circles. do.

That is, the first valley portion 533a is formed to be relatively larger in size and height than the second valley portion 533b in response to the first hill portion 363a of the second rotary cam 361. It is formed to protrude toward the outer peripheral edge side of the other side of the 501.

In addition, the second valley portion 533b is formed to have a relatively smaller size and height than the first valley portion 533a corresponding to the second hill portion 363b of the second rotary cam 361. It is formed to protrude on the edge side of 532.

In the present embodiment, the first and second elastic members 610 and 650 are intended to exert elastic force with the moving cam 510.

The first and second elastic members 610 and 650 are formed as compression coil springs, and are mounted on the first and second hinge shafts 210 and 250, respectively, and the second block 731 of the support bracket 710. And a mobile cam 510 is disposed.

That is, one end portions of the first and second elastic members 610 and 650 are supported by the second block 731 of the support bracket 710, and the other end portion thereof is the cam body 501 of the mobile cam 510. Is supported.

On the other hand, the hinge device 100 configured as described above is flexible printing for electrically connecting the circuit device (not shown) inside the main body 2 and the cover 3 of the portable terminal 1 as shown in FIG. Circuit 910 is provided.

The flexible printed circuit 910 may include a flexible PCB (FPCB) or a micro coaxial cable (MCX) that is widely used in the art.

The flexible printed circuit 910 is mounted on the second dummy part 141 of the hinge case 110, and is preferably supported by the support protrusions 145 of the second dummy part 141.

The flexible printed circuit 910 may include first and second portions drawn out through the third and fourth through parts 153 and 154 of the hinge case 110 in the second dummy part 141. 911, 912 and a third portion 913 connecting these first and second portions 911, 912.

 The first portion 911 has a band shape and is drawn out into the first hinge arm 8 through the third through part 153 of the hinge case 110.

This first portion 911 is electrically connected to a circuit device (not shown) inside the cover 3 via the first hinge arm 8 of the cover 3.

The second part 912 is formed in a band shape and is drawn out into the second hinge arm 9 through the fourth through part 154 of the hinge case 110.

This second portion 912 is electrically connected to a circuit device (not shown) inside the main body 2 via the second hinge arm 9 of the main body 2.

The third part 913 electrically connects the first and second parts 911 and 912, and is supported by the support protrusions 145 of the second dummy part 141.

Hereinafter, the operation of the hinge device 100 for a mobile 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.

First, in this embodiment, as shown in FIG. 2, the first mode M1 in which the lid 3 and the main body 2 of the portable terminal 1 face each other at 0 degrees is set as an initial starting point.

FIG. 12 is a view for explaining a first mode in a state in which a lid and a main body face each other as 0 degrees in a hinge device for a portable terminal according to an exemplary embodiment of the present invention.

Referring to the drawings, in the first mode M1 in which the lid 3 and the main body 2 face at 0 degrees, the first and second ridges 323a and 323b of the first rotary cam 321 The mobile cam 510 is in a state of being separated from the first and second valley portions 523a and 523b of the first cam portion 511.

The first and second mountain parts 363a and 363b of the second rotary cam 361 are moved from the first and second valley parts 533a and 533b of the second cam part 531 of the mobile cam 510. It is in a dislocated state.

That is, the first and second mountain parts 323a and 323b of the first rotary cam 321 are the ribs of the first cam part 511 as the elastic force of the first elastic member 610 acting as the moving cam 510. The molds 523a and 523b are in close contact with the inclined sections, respectively.

In addition, the first and second mountain parts 363a and 363b of the second rotary cam 361 are bones of the second cam part 531 as elastic force of the second elastic member 650 acting as the moving cam 510. It is in the state in close contact with the mold parts 533a and 533b.

Accordingly, the first and second rotary cams 321 and 361 are each of the mountain parts 323a, 323b, 363a, and 363b by the elastic pressing force of the mobile cam 510, and the first and second cams 511 and 531. The rotational force acts in the direction of engagement with the bone portions 523a, 523b, 533a, and 533b.

Thus, in the first mode M1, as the rotational force acts in the closing direction of the cover 3 on the first and second hinge shafts 210 and 250 via the first and second rotary cams 321 and 361. The lid 3 provides a preload of a predetermined torque with respect to the main body 2 as its rotational force.

In the present embodiment, since the first and second cams 511 and 531 of the first and second rotary cams 321 and 361 and the mobile cam 510 are each configured as dual dual cams, It is possible to provide additional preload on the lid 3 by the same action.

When the cover 3 and the main body 2 are closed at 0 degrees, the cover 3 or the main body 2 may be caused by its own weight through the above sufficient preload even if the mobile terminal 1 is laid down in the horizontal direction. Since it is possible to prevent the phenomenon such as spreading, it is possible to further maximize the marketability of the mobile terminal (1).

FIG. 13 is a view for explaining a second mode in which a lid is opened as a reference opening angle in a state in which the lid and the main body face 0 degrees in the hinge apparatus for a portable terminal according to an exemplary embodiment of the present invention.

Referring to the drawings, in the present embodiment in the same state as the first mode M1 of FIG.

Then, as the cover 3 rotates in the upward direction, the first hinge shaft 210 also rotates in an upward direction (hereinafter referred to as "forward direction" for convenience).

Accordingly, as shown in FIG. 14, the first gear 311 of the first driving gear 310 rotates in the forward direction, the first driven gear 410 rotates in the reverse direction, and the second driven gear 450 is rotated in the forward direction.

Therefore, since the second gear part 351 of the second driving gear 350 is meshed with the second driven gear 450, the second hinge shaft 250 is opposite to the rotation direction of the first hinge shaft 210. It will rotate at an angle in the reverse direction.

That is, when the cover 3 and the main body 2 are closed at 0 degrees, and the cover 3 is opened for a predetermined period in the upward direction, the first hinge shaft 210 rotates by a predetermined angle in the forward direction. Through the interaction of the gears as described above, the second hinge shaft 250 is rotated by an angle in the reverse direction.

As a result, the main body 2 is rotated for a predetermined period in a direction opposite to the rotation direction of the cover 3.

During this process, as the first and second hinge shafts 210 and 250 rotate in opposite directions, the first and second mounts 323a and 323b of the first rotary cam 321 move. The cam 510 slips in close contact with the inclined sections of the first and second valleys 523a and 523b of the first cam unit 511 to reach the highest point of the valleys 523a and 523b.

The first and second hills 363a and 363b of the second rotary cam 361 are inclined to the first and second valleys 533a and 533b of the second cam 531 in the movable cam 510. While slipping in close contact with the section, the peaks of the valleys 533a and 533b are reached.

Accordingly, each of the mountain parts 323a, 323b, 363a, and 363b presses the mobile cam 510 until the peak point of each of the bone parts 523a, 523b, 533a, and 533b is reached, and the mobile cam 510 is moved. ) Compresses the first and second elastic members 610 and 650 to the maximum and moves in the pressing direction of the first and second rotary cams 321 and 361 along the first and second hinge axes 210 and 250. Done.

In this state, when a force acting upwardly with respect to the cover 3 is applied, the first and second hinge shafts 210 and 250 are rotated in opposite directions by the action of the gears described above. As a result, each of the hills 323a, 323b, 363a, and 363b is out of the peaks of the valleys 523a, 523b, 533a, and 533b.

At that moment, the movable cam 510 presses the first and second rotary cams 321 and 361 as the elastic restoring force of the first and second elastic members 610 and 650, and thus the first and second hinge shafts. It is moved in the pressing direction along (210, 250).

At the same time, each of the hills 323a, 323b, 363a, and 363b slips in close contact with the inclined sections of the valleys 523a, 523b, 533a, and 533b, and the valleys 523a, 523b, 533a, 533b. ) To the lowest point.

Then, in the above process, the elastic pressing force of the mobile cam 510 is converted as the rotational force acting in the forward and reverse directions with respect to the first and second rotary cams 321 and 361, respectively.

Accordingly, the first and second hinge shafts 210 and 250 are moments when the mountain parts 323a, 323b, 363a, and 363b are engaged with the lowest points of the valleys 523a, 523b, 533a, and 533b as the rotational force described above. Will rotate in the forward and backward directions.

As a result, the cover 3 and the main body 2 are rotated in the remaining sections by the relative rotation of the first and second hinge shafts 210 and 250 according to the elastic restoring force of the first and second elastic members 610 and 650. It is automatically opened by the reference opening angle [theta] which is approximately 180 degrees.

Here, since the cover 3 serves as a stopper in which each of the mountain parts 323a, 323b, 363a, and 363b and each of the bone parts 523a, 523b, 533a, and 533b are engaged with each other, the cover 3 is removed. As long as the allowable external force is not applied, it will not overlap in the main body 2 direction.

As described above, in the present embodiment, the lid 3 is opened by the reference opening angle θ in a state where the lid 3 and the main body 2 face at 0 degrees. 3) Click (open term widely used in the industry) can be implemented.

Therefore, in the second mode M2 according to the present embodiment, since the cover 3 is opened by the reference opening angle θ, it can be seen that the portable terminal 1 is identical to the general foldable terminal in appearance.

Thus, in the present embodiment, when the lid 3 is opened by the reference opening angle θ as described above, the user can conveniently use a general mobile communication function or a game.

FIG. 15 is a diagram for describing a third mode in which a lid is opened by 360 degrees at a reference open angle in the hinge device for a mobile terminal according to an exemplary embodiment of the present disclosure.

Referring to the drawings, in this embodiment, the cover 3 is further rotated upward in the same state as the second mode M2 of FIG. 2, and the cover 3 is rotated 360 degrees as in the third mode M3. Can be opened

In the third mode M3 as described above, the operation of the hinge device 100 according to the exemplary embodiment of the present invention is the same as the operation process in the second mode M2 as described above, and thus, the present invention is further described herein. Detailed description will be omitted.

In this case, the first and second hill portions 323a and 323b of the first rotary cam 321 are the first and second valley portions 523a and 523b of the first cam portion 511 of the mobile cam 510. Is out of state.

That is, the first and second mountain parts 323a and 323b of the first rotary cam 321 are the ribs of the first cam part 511 as the elastic force of the first elastic member 610 acting as the moving cam 510. The molds 523a and 523b are in close contact with the inclined sections, respectively.

The first and second mountain parts 363a and 363b of the second rotary cam 361 are moved from the first and second valley parts 533a and 533b of the second cam part 531 of the mobile cam 510. It is in a dislocated state.

That is, the first and second mountain parts 363a and 363b of the second rotary cam 361 are valleys of the second cam part 531 as elastic forces of the second elastic member 650 acting as the moving cam 510. It is in the state in close contact with the mold parts 533a and 533b.

Accordingly, the first and second rotary cams 321 and 361 are each of the mountain parts 323a, 323b, 363a, and 363b by the elastic pressing force of the mobile cam 510, and the first and second cams 511 and 531. The rotational force acts in the direction of engagement with the bone portions 523a, 523b, 533a, and 533b.

Thus, in the third mode M3, as the rotational force acts in the opening direction of the cover 3 on the first and second hinge shafts 210 and 250 via the first and second rotary cams 321 and 361. The lid 3 provides a preload of a predetermined torque with respect to the main body 2 as its rotational force.

In the present embodiment, since the first and second cams 511 and 531 of the first and second rotary cams 321 and 361 and the mobile cam 510 are each configured as dual dual cams, It is possible to provide additional preload on the lid 3 by the same action.

When the cover 3 and the main body 2 are opened at 360 degrees, the cover 3 or the main body 2 may be caused by its own weight through the above sufficient preload even when the portable terminal 1 is laid down in the horizontal direction. Since it is possible to prevent the phenomenon such as spreading, it is possible to further maximize the marketability of the mobile terminal (1).

In the present embodiment, the lid 3 is semi-automatically opened in 360 degrees with respect to the main body 2 through the same operation as in the second mode M2. Terminology being used)

As described above, in the present embodiment, since the cover 3 can be opened at 360 degrees while the cover 3 is opened at the reference opening angle θ, character information, image (picture, video) information, and terrestrial wave can be opened. It is possible to conveniently use multimedia such as broadcasting.

On the other hand, in the present embodiment, when the cover 3 is opened from the main body 2 to the reference opening angle (θ) or 360 degrees, the cover 3 is operated in the reverse order to the above procedure. Therefore, detailed description will be omitted below.

As described so far, the hinge device 100 for a mobile terminal according to an exemplary embodiment of the present invention has the cover 3 and the main body 2 facing 0 degrees with respect to the cover 3 with a reference open angle ( (theta)) and 360 degree can be rotated, and the convenience of use can be improved.

In the present embodiment, it is possible to secure a competitive advantage in the industry by satisfying the desire of consumers who want to utilize the display unit 7 of the portable terminal 1 as a relatively large area. That is, in the present embodiment, it is advantageous not only to perform a mobile communication function but also to use a multimedia service such as watching a broadcast or a game.

In addition, in the present embodiment, when the distance between the axes of the first and second hinge shafts 210 and 250 is determined to be the same as in the prior art, the first and second drive gears 310 and 350 are driven by the first and second driven. Since connected through the gears (410, 450), unlike the prior art it is possible to reduce the size of the first and second drive gear (310, 350).

Therefore, in this embodiment, since the size and thickness of the hinge device 100 can be reduced, the 360 degree operation of the portable terminal 1 is made stable.

In this embodiment, since the first and second hinge shafts 210 and 250 rotate relative to each other through the first and second driving gears 310 and 350 and the first and second driven gears 410 and 450, The structural stability of the portable terminal 1 can be improved.

In the present embodiment, the first and second rotary cams 321 and 361 and the first and second cam portions 511 and 531 of the mobile cam 510 are respectively configured as dual dual cams, so that the lid 3 and the main body are Sufficient preload can be provided for the lid 3 and the body 2 in the 0 and 360 degrees implementation of (2).

Therefore, in the present embodiment, when the lid 3 and the main body 2 are closed at 0 degrees or opened at 360 degrees, the lid 3 is secured through the sufficient preload even when the portable terminal 1 is laid horizontally. Alternatively, since the main body 2 can be prevented from being opened due to its own weight, the merchandise of the mobile terminal 1 can be further maximized.

In this embodiment, one end portions of the first and second hinge shafts 210 and 250 are fastened to the main body 2 and the cover 3, and the first to fourth through parts 151 of the hinge case 110 are provided. , 152, 153, and 154 are formed as piles that support the relative rotation of the main body 2 and the lid 3, and there is no need to assemble the piles separately, so that the assembly process and the parts can be simplified.

Furthermore, since the first to fourth through parts 151, 152, 153, and 154 as the dummy can absorb the impact of opening and closing the main body 2 and the lid 3, the first and second hinge shafts ( It is possible to prevent the 210 and 250 from being deformed by the impact or the driving gears 310 and 350 and the driven gears 410 and 450 from being damaged.

Therefore, in this embodiment, it is possible to solve the problem of the operability of the hinge device 100 due to the deformation of the first and second hinge shafts (210, 250) and damage to the gears.

In addition, in the present embodiment, since the flexible printed circuit 910 may be mounted through the second dummy part 141 of the hinge case 110, the flexible printed circuit 910 may be easily mounted and wired. There is this.

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.

Claims (25)

A hinge device for a portable terminal for rotating the lid in a vertical direction with respect to the body of the portable terminal in a vertical direction. A hinge case connected to the first hinge arm of the cover upper end and the second hinge arm of the upper end of the main body; First and second hinge shafts rotatably mounted to the inside of the hinge case at a predetermined interval, and one end of each of the first and second hinge arms is assembled; First and second drive gears fixedly installed on the first and second hinge shafts, respectively, the rotation cams being integrally formed; A first driven gear rotatably installed in the hinge case and meshing with the first driving gear; A second driven gear rotatably installed in the hinge case and meshing with the first driven gear and the second driving gear; A mobile cam installed on the first and second hinge shafts so as to be linearly movable along a length direction and in cam contact with each of the rotary cams; And First and second elastic members mounted on the first and second hinge shafts and exert elastic force with the movable cam, respectively. Including; Each of the rotary cams has a first and second ridges formed to correspond to each other on the concentric circles with different sizes and heights, The mobile cam is formed integrally with the first and second cam portions corresponding to the respective rotary cams, And each of the cam portions includes first and second valley portions that engage with the first and second mountain portions. According to claim 1, A hinge device for a portable terminal to implement the reference opening angle of the cover as 150 to 180 degrees. According to claim 1, When the cover is opened in the reference opening angle range while the cover and the main body face 0 degrees, and the cover is opened 360 degrees at the reference opening angle, The cover is a hinge device for a mobile terminal to implement a semi-automatic click opening. According to claim 1, When the cover is opened as the reference opening angle, and opened 360 degrees from the reference opening angle, And the first and second hinge shafts are rotated relative to each other in a position where the hinge case is fixed while the main body and the cover are rotatably supported by the hinge case. According to claim 1, And the first and second cam portions form insertion holes for inserting the first and second hinge shafts, respectively. According to claim 1, The hinge case is formed in the form of a rectangular case, the hinge device for a mobile terminal including an upper case and a lower case which can be mutually coupled through a bolt. The method of claim 6, The hinge case, A mounting part for mounting the first and second hinge shafts, First and second dummy parts partitioned on both sides of the mounting portion with the mounting portion therebetween Hinge device for a portable terminal comprising a. The method of claim 7, wherein The mounting part and the first and second dummy parts are formed to be partitioned with each other through a partition wall, The first dummy part supports one end of the first and second hinge shafts, And the second dummy part is connected to the first and second hinge arms. The method of claim 7, wherein The lower case forms a fastening protrusion to which the bolt can be coupled to the mounting portion and the first and second dummy portions, respectively. The upper case is a hinge device for a mobile terminal to form a fastening hole corresponding to each of the fastening projections. The method of claim 7, wherein The hinge case, Protruding to be connected to the first dummy part, and forming first and second through-holes on one side of which one end of each of the first and second hinge shafts is fitted; The hinge device for a mobile terminal which protrudes to be connected to the second dummy part and forms third and fourth through parts connected to the first and second hinge arms, respectively, on one side thereof. The method of claim 10, And the third and fourth through parts are formed as rotation center axes connected to the first and second hinge arms, respectively. According to claim 1, And a fixing piece fixed to the first and second hinge arms through pins at one end of each of the first and second hinge shafts. The method of claim 7, wherein In the second dummy part, Is equipped with a flexible printed circuit for electrically connecting the circuit device inside the body and the cover, And a pair of support protrusions for supporting the flexible printed circuit. The method of claim 10, The second dummy part is equipped with a flexible printed circuit for electrically connecting the circuit device inside the main body and the cover, And said flexible printed circuit comprises first and second portions drawn out through said third and fourth through portions, respectively, and a third portion connecting said first and second portions. According to claim 1, And the first and second drive gears are insert injection molded and formed integrally with the first and second hinge shafts, respectively. According to claim 1, A support bracket installed inside the hinge case to rotatably support the other end portions of the first and second hinge shafts, The support bracket, A first block fastened to the hinge case; And a second block formed integrally with the first block, the second block having first and second through-holes rotatably fitted with the other ends of the first and second hinge shafts. The method of claim 16, E- is installed at the other end of the first and second hinge shafts protruding through the first and second through holes, and rotatably coupling the first and second hinge shafts to the second block, respectively. A hinge device for a mobile terminal further comprising a ring. According to claim 1, And first and second holders mounted to the first and second hinge shafts to rotatably support the first and second driven gears. The method of claim 18, Each holder, A pair of mounting holes into which the first and second hinge shafts are rotatably fitted; And a pair of mounting grooves in which both ends of the rotary shafts of the first and second driven gears are rotatably fitted. The method of claim 18, The first drive gear is provided with a first gear portion meshing with the first driven gear, the rotary cam is integrally formed with the first gear portion, The second drive gear is provided with a second gear portion meshing with the second driven gear, the rotary cam is integrally formed with the second gear portion, The first holder is mounted between the first and second gear parts and the respective rotary cams, And the second holder is mounted to end portions of the first and second gear portions. The method of claim 7, wherein The mounting portion, A first support groove for supporting the rotation of the first driven gear is formed in the lower case, And a second supporting groove for supporting the rotation of the second driven gear in the upper case. The method of claim 21, First and second holders are rotatably mounted on the first and second hinge shafts to support the first and second driven gears; The mounting unit is connected to the first support groove, the hinge device for a mobile terminal is formed a position regulating groove for regulating the position of any one of the first and second holder. The method of claim 22, Any one of the first and the second holder is a hinge device for a mobile terminal in which a position regulating projection is formed corresponding to the position regulating groove. According to claim 1, The first mountain portion is formed to protrude to the outer peripheral edge side of each rotary cam, And the second peak portion has a smaller size and height than the first peak portion, and protrudes to correspond to outer peripheral surfaces of the first and second hinge shafts. The method of claim 24, Each cam portion forms an insertion hole for inserting the first and second hinge axis, respectively, The first valley portion is formed on the outer peripheral edge side of each cam portion corresponding to the first mountain portion, And the second valley part is formed at an edge of an insertion hole of each cam part corresponding to the second mountain part.

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