KR101180416B1 - Hinge device for mobile phone - Google Patents

Abstract

The hinge device of a portable terminal according to an exemplary embodiment of the present invention is configured in a folding portable terminal including a first body as a main body and a second body as a cover, and both ends of the connection ends of the first and second bodies. Connecting the first and second bodies, i) a hinge case mounted on both sides of the connection end of the first and second bodies, respectively, and ii) rotatably mounted on the hinge case. First and second hinge axes connected to a second body, respectively; iii) a gear assembly for driving the first and second hinge axes when the first and second bodies are rotated, and iii) the first and second hinge axes. A rotary cam coupled to each of the second hinge shafts; and iii) a movable cam mounted to the first and second hinge shafts so as to be movable along the longitudinal direction, and a cam cam contacting the rotary cams. And a second hinge shaft, the moving cam An elastic member that exhibits a resilient force, wherein the gear assembly is configured on the first and second hinge shafts and includes a cycloidal gear as a driving gear that transmits rotational driving force of the first and second bodies to these hinge shafts. do.

Description

Hinge device for mobile device {HINGE DEVICE FOR MOBILE PHONE}

An exemplary embodiment of the present invention relates to a folding-type portable terminal, and more particularly, to a hinge device of a folding-type portable terminal in which the cover is opened and closed while rotating the cover in a vertical direction with respect to the main body.

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.

The 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 may be configured by configuring a fixed cam, a mobile cam, an elastic member and a hinge shaft.

Here, two hinge shafts may be installed, and each of the hinge shafts has a fixed cam, a mobile cam, and an elastic member, as well as a gear type hinge device that is configured with gears engaged with each hinge shaft. .

By the way, such a gear-type hinge device is to produce a gear by hob processing or involute processing, such that the gear produced is narrow between the gear teeth, so that the thickness and size of the gear is inevitably increased, so the overall thickness And the size of the device increases, and as a result, the overall size of the device increases, which implies that the compact structure of the portable terminal is difficult.

In addition, the present embodiment also has a problem that the gear net is damaged or broken during the interlocking operation of the gears as the length of the gear is increased as the gear is configured as hob processing or involute processing.

In addition, since the gear-type hinge device according to the prior art employs gears requiring precision machining, the manufacturing cost of the entire device is increased, and thus, there is a problem in that it does not secure a competitive advantage in the art. have.

Exemplary embodiments of the present invention have been created to improve the above-described problems, the hinge of the portable terminal to enable the compact configuration of the portable terminal, to improve the durability, and to reduce the manufacturing cost Provide the device.

To this end, the hinge device of a portable terminal according to an exemplary embodiment of the present invention, both sides of the connecting end of the first and second body in a folding-type portable terminal including a first body as a body and a second body as a cover Respectively configured to interconnect the first and second bodies to form a central axis of rotation of the first and second bodies, the central axis of rotation of the first and second bodies to be connected through a gear assembly, and The gear assembly comprises a cycloidal gear.

In the hinge device for the portable terminal, the gear assembly includes a drive gear configured to be engaged with each of the rotational central axis, the drive gear may be made of a cycloid gear.

In the hinge device for the portable terminal, the gear assembly may include a drive gear configured in each of the rotational central axes, and at least one idle gear disposed between the drive gears and engaged with the drive gear.

In the hinge device for a portable terminal, the drive gear and the idle gear may be formed as a cycloidal gear.

In addition, the hinge device of a portable terminal according to an exemplary embodiment of the present invention is configured in a folding-type portable terminal including a first body as a main body and a second body as a cover, and connecting the first and second bodies. Connecting the first and second bodies at both ends, i) a hinge case mounted at both ends of the connection end of the first and second bodies, and ii) rotatably mounted to the hinge case. First and second hinge shafts connected to the first and second bodies, respectively; iii) a gear assembly for driving the first and second hinge shafts when the first and second bodies are rotated; A rotary cam coupled to each of the first and second hinge shafts; and iii) a movable cam mounted to the first and second hinge shafts so as to be movable along the longitudinal direction, and a cam cam contacting the rotary cams. Mounted to the first and second hinge shafts, the movement And a resilient member that exerts elastic force, wherein the gear assembly is configured on the first and second hinge shafts and transmits the rotational driving force of the first and second bodies to the hinge shafts. Include.

In the hinge device for a portable terminal, the gear assembly includes first and second drive gears coupled to the first and second hinge shafts, respectively, and rotatably mounted to the hinge case and mutually connected to the first drive gears. A first idler gear as a mating cycloidal gear and a second idler gear as a cycloidal gear rotatably installed in the hinge case and meshing with the first idler gear and the second drive gear may be included.

In the hinge device for the portable terminal, the gear assembly may be configured between the base plate and the cover plate provided in the hinge case.

In the hinge device for a mobile terminal, a post for rotatably mounting the first and second idle gears may be formed on any one of the base plate and the cover plate.

In the hinge device for the portable terminal, a pair of first coupling holes may be formed in the base plate to which the first and second hinge shafts are rotatably coupled.

In the hinge device for a mobile terminal, a second coupling hole may be formed in the cover plate to be connected to the first coupling hole and to allow the first and second hinge shafts to be rotatably coupled to each other.

In the hinge device for the portable terminal, the gear assembly may include first and second drive gears coupled to the first and second hinge shafts respectively and engaged with each other.

In the hinge device for a mobile terminal, the hinge case may further include a spring support plate rotatably supporting the first and second hinge shafts and supporting the elastic member.

In the hinge device for a portable terminal, the spring support plate may be formed with a pair of legs facing each other to form a predetermined space on the bottom surface side of the hinge case.

In the hinge device for a portable terminal, a pair of through members for mounting a flexible printed circuit into the space may be penetrated to the bottom surface of the hinge case corresponding to the spring support plate.

In the hinge device for a portable terminal, first and second grooves for mounting the flexible printed circuit may be formed at inner and outer ends of the hinge case.

In the hinge device for the portable terminal, the first groove may be formed at an inner end of the hinge case and open to face each other with respect to the pair of penetrating members.

In the hinge device for the portable terminal, the second groove may be formed at an outer end of the hinge case and open in opposite directions with respect to the pair of penetrating members.

According to the exemplary embodiment of the present invention, since the first and second driving gears and the first and second idle gears of the gear assembly are configured as cycloidal gears, the thickness and size of the entire device can be slimmed and compactly implemented. The production cost can be reduced.

In addition, in the present embodiment, the gears of the gear assembly are formed in a cycloid tooth curve, thereby improving durability of the entire apparatus, such as not breaking or breaking during gear biting operation.

In addition, in the present embodiment, since the gear assembly is configured between the base plate and the cover plate provided in the hinge case, it is possible to prevent the gears of the gear assembly from flowing, thereby improving the operational stability and reliability of the entire apparatus. have.

In addition, in the present embodiment, by forming a rack on the spring support plate and installing the penetrating member on the hinge case to mount the flexible printed circuit into the hinge case, the wiring of the flexible printed circuit can be facilitated.

These drawings are for the purpose of describing an exemplary embodiment of the present invention, and therefore the technical idea of the present invention should not be construed as being limited to the accompanying drawings.
1A and 1B are diagrams illustrating a portable terminal to which an exemplary embodiment of the present invention can be applied.
2 is a combined perspective view illustrating a hinge device of a mobile terminal according to an exemplary embodiment of the present invention.
3 is an exploded perspective view illustrating a hinge device of a portable terminal according to an exemplary embodiment of the present invention.
4 is a plan view of FIG. 2.
5 is a plan view illustrating a gear assembly applied to a hinge device of a portable terminal according to an exemplary embodiment of the present invention.
Fig. 6 is a diagram illustrating a hinge device of a mobile terminal according to another exemplary embodiment of the present invention.

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.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In the following detailed description, the names of the components are divided into first, second, and the like in order to distinguish the names of the components in the same relationship, and the descriptions of the components are not necessarily limited to the order in the following description.

1A and 1B are diagrams illustrating a portable terminal to which an exemplary embodiment of the present invention can be applied.

Referring to the drawings, the mobile terminal 1 to which the exemplary embodiment of the present invention is applied is a multi-entry such as data input, DMB, video, game, Internet, 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 media service.

The portable terminal 1 includes a first body 10 as a main body and a second body 20 as a lid.

The mobile terminal 1 is basically a vertical rotation method in which the second body 20 can be opened and closed while the second body 20 rotates in the vertical direction with respect to the first body 10 (in the art, It can be configured as a general mobile phone of the "folding method").

In the present exemplary embodiment, the portable terminal 1 is laid out in the planar direction and viewed from the front, and a surface facing the user may be defined as the front surface. In addition, the longitudinal directions of the first body 10 and the second body 20 may be defined in the left and right directions, and the width direction may be defined in the vertical direction.

However, 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 reference direction is not necessarily limited to the reference direction of the present embodiment.

In this case, the portable terminal 1 is generally formed of a wide phone, and the first body 10 and the second body 20 are formed as a rectangular body having a length in the left and right direction relatively longer than a width in the vertical direction.

That is, in the mobile terminal 1 in a state where the first and second bodies 10 and 20 face each other (closed state) as shown in FIG. 1A, the second body 20 is connected to the first body 10. The first and second bodies 10 and 20 are opened and closed as shown in FIG. 1B by rotating in the vertical direction along the width direction.

In addition, the portable terminal 1 configures a keypad portion 11 of a qwerty keyboard array (preferably at least four arrays) on the front surface of the first body 10 based on FIG. 1B. The front of the body 20 constitutes a display unit 21 as a touch screen.

As an alternative, the present invention is not particularly limited to the configuration of the keypad 11 on the front of the first body 10, and by inputting characters such as alphabets and Korean characters in a touch screen manner by displaying the keyboard layout of the keypad. It may be provided with a possible display unit.

The mobile terminal 1 as described above rotates the second body 20 upward with respect to the first body 10 through the hinge device 100 which will be described later. 20 may be opened as a reference open angle (eg 180 degrees) (see FIG. 1B).

So far, the exemplary embodiment of the present invention has been described as a general mobile phone capable of mobile communication as the mobile terminal 1, but is not necessarily limited thereto, and is not necessarily limited to a PDA, a PMP, a smart phone, a handheld PC, an MP3 / MP4 player, and a game machine. It can also be applied to portable electric and electronic devices such as, netbooks, notebooks, and the like.

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 or wireless LAN card, and perform a multimedia play function such as a game item. It may be provided with a microprocessor.

Hereinafter, the hinge device 100 according to the present embodiment, which can be applied to the folding-type portable terminal as described above, will be described in detail with reference to the accompanying drawings.

FIG. 2 is a combined perspective view illustrating a hinge device of a mobile terminal according to an exemplary embodiment of the present invention, FIG. 3 is an exploded perspective view illustrating a hinge device of a mobile terminal according to an exemplary embodiment of the present invention, and FIG. 2 is a plan view of FIG. 2.

Referring to FIG. 2, the hinge device 100 of a portable terminal according to an exemplary embodiment of the present invention may include the first and second bodies 10 and 20 in order to open and close the first and second bodies 10 and 20 in a range of 0 to 180 degrees. It is to support the relative rotation of the second body (10, 20).

For example, the hinge device 100 may have a user's rotational force on the second body 20 until the second body 20 as the cover is rotated for a predetermined period of the entire rotation section with respect to the first body 10 as the main body. When it is applied, the rotational motion of the second body 20 is automatically made by the elastic restoring force of the spring in the remaining section.

The hinge device 100 may be configured to be interconnected to these bodies 10 and 20 at both ends of the connection ends of the first body 10 and the second body 20.

To this end, groove-shaped hinge arms 30 (see FIGS. 1A and 1B) for mounting the hinge device 100 are formed on both sides of the connection ends of the first and second bodies 10 and 20. .

Accordingly, the hinge device 100 interconnects the first and second bodies 10 and 20, and forms the rotation center axis A of the first and second bodies 10 and 20, as shown in FIG. 1B. do.

The central axis of rotation A supports the relative rotation of the bodies 10, 20 while interconnecting the first and second bodies 10, 20, wherein the first and second bodies 10, 20 are The opening and closing operation is performed by rotating in the vertical direction about the rotation center axis A. FIG.

The hinge device 100 according to the present embodiment as described above is mounted to the hinge arm 30 on both sides of the connecting ends of the first and second bodies 10 and 20, and the first and second bodies 10 and 20. It can be made as a gear hinge connected to).

3 and 4, the hinge device 100 of a portable terminal according to an exemplary embodiment of the present invention basically includes a hinge case 120, first and second hinge shafts 130 and 140. , The gear assembly 150, the rotary cam 160, the movable cam 170, and the elastic member 180 may be configured.

In the present embodiment, the hinge case 120 is for mounting the following components, and is disposed on the hinge arm 30 at both sides of the connecting end of the first and second bodies 10 and 20, respectively.

The hinge case 120 includes accessory elements such as various blocks, protrusions, ribs, grooves, holes, and the like.

These accessory elements are intended to substantially support the following components, and in principle, the accessory elements will be collectively referred to as the hinge case 120 except for the following exceptional cases.

The hinge case 120 may be formed of a cylinder having one side open and a bottom surface formed on the other side.

In the present embodiment, the first and second hinge shafts 130 and 140 are used to form the rotation center axes A (see FIG. 1B) of the first and second bodies 10 and 20 as described above. In this case, the hinge case 120 is disposed in parallel to each other, and is rotatably mounted to the hinge case 120.

In this case, the first and second hinge shafts 130 and 140 are installed to protrude to the outside of the hinge case 120, so that the first and second hinge shafts 130 and 140 are provided at the hinge arms 30 of the first and second bodies 10 and 20. It may be connected to the body (10, 20), respectively.

For example, the first and second hinge shafts 130 and 140 may be connected to the first and second bodies 10 and 20 through connection brackets 135 and 145, respectively. The connection brackets 135 and 145 may be connected to the first and second hinge shafts 130 and 140, respectively, and may be fastened to the first and second bodies 10 and 20 through bolts and the like, respectively.

In this embodiment, the gear assembly 150 transmits rotational driving force to the first and second hinge shafts 130 and 140 when the first and second bodies 10 and 20 rotate, and these hinge shafts 130 , 140, to drive the rotational center axes A (see FIG. 1B) of the first and second bodies 10 and 20.

The gear assembly 150 includes a pair of first and second drive gears 151 and 152 and a pair of first and second idle gears 153 and 154.

The gear assembly 150 is provided inside the hinge case 120, and is configured between the base plate 155 and the cover plate 157 to which the first and second hinge shafts 130 and 140 are rotatably coupled. Can be.

Here, the base plate 155 is formed with a pair of first coupling holes 156 to which the first and second hinge shafts 130 and 140 are rotatably coupled, and the cover plate 157 includes a first A pair of second coupling holes 158 connected to the coupling holes 156 and rotatably coupled to the first and second hinge shafts 130 and 140 are formed.

The cover plate 157 is coupled to the open end of the hinge case 120 while covering the gear assembly 150, and is provided as a cover covering the open end of the hinge case 120.

The first and second driving gears 151 and 152 are seated on an upper surface of the base plate 155 and are coupled to the first and second hinge shafts 130 and 140, respectively. These drive gears 151 and 152 may be fitted and coupled to the first and second hinge shafts 130 and 140, respectively.

In addition, the first and second idle gears 153 and 154 are rotatably installed on the cover plate 157 between the first and second driving gears 151 and 152. A pair of posts 159 may be formed to rotatably support the first and second drive gears 151, 152.

Here, the first idle gear 153 is rotatably installed on one side post 159 of the cover plate 157 and is meshed with the first driving gear 151. The first idle gear 153 is rotatably mounted in a direction opposite to the rotation direction of the first hinge shaft 130.

In addition, the second idle gear 154 is rotatably installed on the other post 159 of the cover plate 157 in response to the first idle gear 153, and the first idle gear 153 and the second It meshes with the drive gear 152.

In this case, the second idle gear 154 rotates in a direction opposite to the rotation direction of the first idle gear 153, and transmits the rotational force to the second hinge shaft 140 through the second drive gear 152. It will serve to deliver.

For example, as shown in FIG. 5, when the first driving gear 151 rotates in the forward direction due to the rotation of the first hinge shaft 130 according to the rotation of the second body 20, which is a cover of the mobile terminal, the first The idle gear 153 rotates in the reverse direction, and the second idle gear 154 rotates in the forward direction.

Therefore, since the second driving gear 152 is meshed with the second idle gear 154, the second hinge shaft 140 rotates in the reverse direction opposite to the rotation direction of the first hinge shaft 130.

In this embodiment, the first and second drive gears 151 and 152 and the first and second idle gears 153 and 154 as described above are preferably formed as cycloid gears.

Such a cycloidal gear is called a cycloid curve when one point on a rolling circle is drawn as a cycloid curve when another circle rolls inside or outside of a circle without slipping. The cycloid at this time is a tooth curve. It is provided as a gear to be set.

Such cycloidal gears may be manufactured through press working and casting processes, unlike general gear processing such as hob processing or involute gear processing.

In this embodiment, the rotary cam 160 may be fitted and coupled to the first and second hinge shafts 130 and 140, respectively. The rotary cam 160 is formed with a first cam protrusion 161 consisting of a bone portion and a mountain portion.

In addition, the movable cam 170 is mounted to the first and second hinge shafts 130 and 140 so as to be movable along the length direction in the hinge case 120, and the rotation cam 160 is mutually mentioned. It is installed so that the cam contact is possible.

The movable cam 170 has a single plate shape into which both the first and second hinge shafts 130 and 140 can be fitted, and corresponds to the rotary cam 160 of each hinge shaft 130 and 140. The first and second cam portions 171 and 172 are formed.

 Here, the first and second cams 171 and 172 of the mobile cam 170 are formed of a valley portion and a hill portion, the second cam protrusion cam contact with the first cam protrusion 161 of the rotary cam 160 (173, 174) is formed.

In the present embodiment, the elastic member 180 is to exert a resilient force to the moving cam 170, it is made as a spiral compression coil spring mounted on the first and second hinge shafts (130, 140), respectively.

That is, one end of the elastic member 180 is supported by the hinge case 120, the other end is supported by the moving cam 170.

In this case, a spring support plate 185 for rotatably supporting the first and second hinge shafts 130 and 140 and supporting the elastic member 180 is installed inside the hinge case 120.

The spring support plate 185 may have a pair of legs 187 facing each other to form a predetermined space 186 on the bottom surface side of the hinge case 120.

Meanwhile, a pair of through members 191 for mounting the flexible printed circuit 190 to the space 186 mentioned above is provided on the bottom surface of the hinge case 120 in response to the spring support plate 185. Can be installed through.

Here, the flexible printed circuit 190 may include a flexible PCB (FPCB) or MCX (Micro Coaxial Cable) widely used in the art.

The through member 191 is provided as a pair and is fixedly mounted to the pair of mounting holes 193 formed on the bottom surface of the hinge case 120 by laser welding or the like, thereby providing a flexible printed circuit 190. The first groove 195 and the second groove 197 for mounting in the space 186 are formed.

The first groove 195 may be formed at an inner end of the hinge case 120 and open to the pair of through members 191 in a direction facing each other.

The second groove 197 may be formed at an outer end of the hinge case 120, and may be formed to be opened in opposite directions with respect to the pair of through members 191.

Therefore, according to the hinge device 100 of the portable terminal according to the exemplary embodiment of the present invention configured as described above, in the present embodiment, as shown in FIG. 1A, the first body 10 and the first body 10 of the portable terminal 1 are made. 2 Set the state in which the bodies 20 face each other as the initial starting point.

Here, the first and second bodies 10 and 20 are in close contact with each other as a predetermined preload by the elastic force of the elastic member 180 acting as the movable cam 170.

In this state, in the present embodiment, the second body 20 is rotated with respect to the first body 10 in a direction upwards of a predetermined section of the entire rotation section.

Then, the first and second bodies 10 and 20 rotate in opposite directions by the rotational force acting on the first and second hinge shafts 130 and 140 in opposite directions through the gear assembly 150. .

In this case, as the first and second hinge shafts 130 and 140 rotate, the elastic member 180 is compressed by the cam action of the rotary cam 160 and the mobile cam 170, and the elastic member 180. The compressive elastic force of) is provided to the first and second hinge shafts (130, 140).

Then, when the user applies a slight rotational force with respect to the second body 20, the compressive elastic force of the elastic member 180 through the first and second hinge axes (130, 140) 10 and 20, the first and second bodies 10 and 20 are automatically rotated in the remaining sections and are opened 180 degrees.

Meanwhile, in the present embodiment, when the first and second bodies 10 and 20 are closed as shown in FIG. 1A while the first and second bodies 10 and 20 are opened at 180 degrees, the process as described above. Since the operation in the reverse order of the detailed description will be omitted.

As described above, according to the hinge device 100 of the portable terminal according to the exemplary embodiment of the present invention, the first and second driving gears 151 and 152 and the first and second idle of the gear assembly 150 are provided. Since the gears 153 and 154 are configured as cycloidal gears, the thickness and size of the entire apparatus 100 can be slimmed and compactly implemented.

That is, in the case of a general gear manufactured as hob processing or involute processing, the thickness and size of the gears are narrow between injection gears, but in the present embodiment, the gears are formed as cycloidal gears. Since the casting process allows manufacturing, the thickness and size of the gears can be significantly reduced, and manufacturing costs can be reduced.

In addition, in the present embodiment, the gears of the gear assembly 150 may be formed in a cycloid tooth curve, thereby improving durability of the entire device, such as not breaking or breaking during gear biting operation.

In the present embodiment, since the gear assembly 150 is configured between the base plate 155 and the cover plate 157 provided in the hinge case 120, the gears of the gear assembly 150 may be prevented from flowing. This can improve the operational stability and reliability of the entire device.

In the present embodiment, the legs 187 are integrally formed on the spring support plate 185 to mount the flexible printed circuit 190 inside the hinge case 120, and the penetrating member 191 is connected to the hinge case 120. ), Wiring of the flexible printed circuit 190 can be facilitated.

Fig. 6 is a diagram illustrating a hinge device of a mobile terminal according to another exemplary embodiment of the present invention.

Referring to the drawings, the hinge device 200 of a portable terminal according to another exemplary embodiment of the present invention is based on the structure of the previous embodiment, the first coupled to the first and second hinge shafts (230, 240) And a gear assembly 250 in which the second driving gears 251 and 252 mesh with each other.

That is, in the present embodiment, the first and second drive gears 251 and 252, which are formed as cycloidal gears, are coupled to the first and second hinge shafts 230 and 240 without using an idle gear as in the embodiment. It consists of a configuration that can be interlocked with each other.

The rest of the configuration according to another exemplary embodiment of the present invention, that is, the operation of the hinge case 220 and the elastic member 280 and the like are the same as in the above embodiment, a more detailed description will be omitted below.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And it goes without saying that the invention belongs to the scope of the invention.

10 ... first body 11 ... keypad
20 ... Second Body 21 ... Display
30 ... hinge arm 120 ... hinge case
130 ... 1st hinge axis 135, 145 ... Connection bracket
140 ... 2nd hinge axis 150 ... gear assembly
151 ... 1st drive gear 152 ... 2nd drive gear
153 ... first idler gear 154 ... second idler gear
155 ... base plate 157 ... cover plate
159 ... Post 160 ... Revolving Cam
161.Turning the first cam 170.Moving cam
171 ... First Cam Part 172 ... Second Cam Part
173, 174 ... 2nd cam projection 180 ... Elastic member
185 ... spring support plate 187 ... legs
190 ... flexible printed circuit 191 ... penetrating member
195 ... First Home 197 ... Second Home

Claims (12)

delete delete delete In a hinge device which is configured in a folding portable terminal including a first body as a main body and a second body as a cover, and connecting the first and second bodies at both sides of the connection end of the first and second bodies,
Hinge cases mounted on both sides of the connection ends of the first and second bodies, respectively;
First and second hinge shafts rotatably mounted to the hinge case and connected to the first and second bodies, respectively;
A gear assembly for driving the first and second hinge shafts when the first and second bodies are rotated;
Rotary cams coupled to the first and second hinge axes, respectively;
A movable cam mounted to the first and second hinge shafts so as to be movable in a longitudinal direction and in contact with the rotary cam; And
Is mounted on the first and second hinge shaft, including an elastic member to exert a resilient force to the moving cam,
The gear assembly comprises a cycloidal gear as a drive gear configured on the first and second hinge axes and transmitting rotational driving forces of the first and second bodies to these hinge axes,
A spring supporting plate is provided inside the hinge case to rotatably support the first and second hinge shafts and to support the elastic member.
The spring support plate is a hinge device of a mobile terminal, a pair of legs for forming a predetermined space on the bottom surface side of the hinge case facing each other are formed.
5. The method of claim 4,
The gear assembly,
First and second drive gears coupled to the first and second hinge axes, respectively;
A first idle gear rotatably installed in the hinge case and serving as a cycloid gear meshing with the first drive gear;
And a second idler gear rotatably installed in the hinge case and configured as a cycloidal gear meshing with the first idler gear and the second drive gear.
6. The method of claim 5,
The gear assembly is configured between the base plate and the cover plate provided in the hinge case,
The hinge device of a portable terminal, wherein any one of the base plate and the cover plate protrudes a post for rotatably mounting the first and second idle gears. The method of claim 6,
The base plate is formed with a pair of first coupling holes to be rotatably coupled to the first and second hinge shafts,
The cover plate hinge device of the mobile terminal is formed with a second coupling hole is connected to the first coupling hole and the first and second hinge shafts are rotatably coupled.
5. The method of claim 4,
The gear assembly,
And first and second drive gears coupled to the first and second hinge shafts, respectively, as cycloidal gears engaged with each other.
delete delete 5. The method of claim 4,
And a pair of penetrating members through which a flexible printed circuit is mounted in the space on a bottom surface of the hinge case corresponding to the spring support plate.
12. The method of claim 11,
The through member is provided with first and second grooves for mounting the flexible printed circuit at inner and outer ends of the hinge case, respectively.
The first groove is formed at the inner end of the hinge case, is formed to open in a direction facing each other with respect to the pair of through members,
The second groove is formed at an outer end of the hinge case, the hinge device of the mobile terminal is formed to be opened in the opposite direction with respect to the pair of through members.

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