KR20030000788A - Cover hinge mechanism of cellular phone - Google Patents

Abstract

PURPOSE: A cover hinge device for a cellular phone is provided to secure convenience on the use of a cellular phone by automatically opening and closing a cover of the cellular phone. CONSTITUTION: A hinge unit rotatably combines a cover with a body(400). A clutch unit is fixed to the hinge unit, and has a combination shaft(322) for performing a slip operation as to torque. A motor is installed in the body(400). An one-direction power transmitting unit is installed in the clutch unit and the motor for transmitting a power of the motor to the combination shaft(322) and preventing that a rotation force of the combination shaft(322) is transmitted to the motor. The hinge unit has a holder unit(412) fixed to the cover. An insertion hole(414) into which the clutch unit is inserted is opened in one side direction of the holder unit(412), and a rotation axis(416) is protruded in the other side direction of the holder unit(412). The hinge unit has a supporting unit(402) for being formed in the body(400) and having a rotation hole(404) which rotatably supports the rotation axis(416).

Description

Cover hinge device for mobile phone {COVER HINGE MECHANISM OF CELLULAR PHONE}

The present invention relates to a cover hinge device of a mobile phone, to facilitate the use of the mobile phone by enabling the opening and closing of the cover of the mobile phone automatically.

In general, as an example of the hinge device of the flip-type mobile phone looks at the "hinging device of the flip-type mobile phone" shown in Patent Application No. 10-1998-0046799.

As shown in FIG. 1, the hinge device is rotatably connected to the main body and the flip. The hinge device is provided with a switch for switching to the call mode or the standby mode according to the opening and closing angle of the flip.

2, the hinge module M is mounted on one side of the hinge accommodating part 60, and the hinge means 10 is mounted on the other side of the hinge accommodating part 60.

As shown in an exploded perspective view in FIG. 3, the hinge module M is slid with the housing 1, the first hinge shaft 2 positioned to be inserted into the housing 1, and the first hinge shaft 2. Cam 3 for movement, a stopper 5 assembled to the housing 1 so that the first hinge shaft 2 and the cam 3 do not leave the housing 1, the cam 3 and the stopper ( It is composed of a spring (4) is provided between the 5 to provide a force to the cam (3).

The coupling shaft 21 of the first hinge shaft 2 is coupled to the coupling portion 74 of the socket 72 to rotate together with the opening and closing of the flip 70, and the rotation of the first hinge shaft 2. In accordance with the movement, the cam 3 performs a linear reciprocating movement by sliding a movement with the ridge 22 of the first hinge shaft 2. In addition, the spring 4 is a compression or expansion movement based on the rotation center axis direction in accordance with the opening and closing of the flip 70.

The hinge means 10 comprises a second hinge shaft 6, a plate spring 7 for supporting the second hinge shaft 6, and fixing means for fixing the plate spring 7. In addition, a coupling means is added between the second hinge shaft 6 and the plate spring 7 so that both are fixed.

The second hinge shaft 6 is assembled with the coupling portion 74 of the socket 72 to serve as a hinge axis, and the plate spring 7 presses the second hinge shaft 6 outward to support it.

The housing 1 is fully open at one side and partially open at the other side. The guide hole 13 extends in the longitudinal direction on the upper surface 12 of the housing, and the locking holes 15 are formed on both sides thereof.

The first hinge shaft 2 has a coupling shaft 21 assembled with the flip 70 on one side thereof, and has a mount 22 on the other side thereof. At this time, a cylindrical engaging portion 25 having a larger diameter than the coupling shaft 21 is formed between the coupling shaft 21 and the mountain portion 22. At this time, the end of the coupling shaft 21 is provided with a fixing means. The fixing means is formed by alternating the plane 23 and the curved surface 24 is mounted to the engaging portion of the flip 70. Fixing means are assembled with the engaging portion of the flip 70 is formed to rotate together.

The cam 3 engaged with the first hinge shaft 2 is provided with a hill portion 31 and a valley portion 32 to allow sliding motion with the first hinge shaft 2, and a guide hole at the top thereof. A guide protrusion 34 moving along 13 is protruded. The cam 3 can be linearly moved by a guide means composed of a guide hole 13 and a guide protrusion 34. In addition, the cam 3 is provided with a fixing projection 33 so that one end of the spring (4) is fixed.

And the plug 5 is provided with hooks 51 so as to be locked in the locking hole 15, the hook 51 is extended in the axial direction. Guide protrusions 54 for insertion into the guide holes 13 protrude from the top surface of the stopper 5.

The hinge module M configured as described above rotates with the first hinge shaft 2 as the flip 70 is opened and closed. At this time, the mountain portion 22 and the cam 3 of the first hinge shaft 2 is in a sliding motion in close contact with each other, and then the cam 3 compresses or restores the spring 4 while moving back and forth. Let's do it.

That is, when the flip 70 is closed, the first hinge shaft 2 and the cam 3 remain in close contact, and when the flip 70 is opened about 90 degrees, the first hinge shaft 2 and the cam are closed. The mountain parts 22 and 31 of (3) come into close contact with each other, and the spring 4 is in the most compressed state, and when the flip 70 is opened to the call angle, the spring 4 is elongated again by the restoring force.

That is, in the closed state or the open state of the flip 70, the spring 4 maintains the most extended state. When the flip 70 is opened about 90 degrees, the spring 4 maintains the most compressed state.

In this way, the flip 70 can maintain the open state and the closed state with appropriate elasticity by the action of the hinge module M, respectively.

By the way, such a hinge device is to open and close the cover manually, the size of the mobile phone is gradually miniaturized, while the user opening and closing the cover of the mobile phone with one hand has a problem that becomes increasingly difficult.

The present invention has been made to solve the above problems, an object of the present invention is to facilitate the use of the mobile phone by enabling the opening and closing of the cover of the mobile phone automatically.

1 is a perspective view of an installation state showing a cover hinge device of a conventional mobile phone.

Figure 2 is a cross-sectional view of the coupling hinge of the cover hinge device shown in FIG.

3 is an exploded perspective view of the cover hinge device shown in FIG.

Figure 4 is a perspective view of the installation state of the cover hinge device according to the first embodiment of the present invention.

5 is an exploded perspective view of the cover hinge device shown in FIG. 4.

6 is an assembled state cross-sectional view of the cover hinge device shown in FIG.

7 is a cross-sectional view of the process of opening the cover in FIG.

8 is a side cross-sectional view of the motor shown in FIG.

9 is a plan sectional view of the motor shown in FIG.

10 is an exploded perspective view of main parts of a cover hinge device according to a second embodiment of the present invention;

11 is an exploded perspective view of main parts of a cover hinge device according to a third embodiment of the present invention;

12 is an exploded perspective view of main parts of a cover hinge device according to a fourth embodiment of the present invention;

13 is an exploded perspective view of main parts of a cover hinge device according to a fifth embodiment of the present invention;

<Explanation of symbols for main parts of drawing>

300: housing 302: internal space

304: through hole 306: protrusion

308: sliding groove 320: rotary slip portion

322: coupling shaft 324: guide shaft

326: first cylindrical portion 327: cam projection

328: first wavefront 329: rim

330: fixed slip portion 332: guide hole

334: second cylindrical portion 335: cam groove

336: second waveform surface 337: flat portion

338: sliding projection 339: fixed shaft

340: spring 350: motor

351: power generating unit 352: first rotating shaft

353: reduction gear 354: center gear

355: planetary gear 356: internal gear

357: disc 358: second rotating shaft

362: worm gear 364: worm wheel

366: central axis 368: coupling groove

370: gear housing 400: main body

402: support portion 404: rotating ball

408: switch 410: cover

412: holder portion 414: insertion hole

416: axis of rotation

The present invention for achieving the above object, the hinge portion to enable the hinge rotatable cover and the main body; A clutch part fixed to the hinge part and having a coupling shaft that slips against a predetermined torque or more; A motor installed in the main body; And a one-way power transmission unit connected to the clutch unit and the motor and transmitting power of the motor to the coupling shaft, and the rotational force of the coupling shaft is not transmitted to the motor. to provide.

Hereinafter, a first embodiment according to the present invention will be described.

4 is a perspective view of an installation state of the cover hinge device according to the first embodiment, and FIG. 5 is an exploded perspective view of the cover hinge device shown in FIG. 4.

First, the configuration of the first embodiment will be described.

The first embodiment includes a clutch portion having a hinge portion for hinge-rotating the cover 410 and the main body 400, and a coupling shaft 322 fixed to the hinge portion and slipping against a predetermined torque or more; The motor 350 is installed on the main body 400, and is connected to the clutch unit and the motor 350, and transmits the power of the motor 350 to the coupling shaft 322, and the rotational force of the coupling shaft 322 is a motor ( It consists of a one-way power transmission unit that does not transmit to 350.

The hinge portion, the holder 412 is fixed to the cover 410, the insertion hole 414 is inserted into the clutch portion in one direction is opened, the rotating shaft 416 protrudes in the other direction; And a support part 402 formed on the main body 400 and having a rotation hole 404 rotatably supporting the rotation shaft 416.

In addition, the clutch part has an inner space 302 open at one side, a through hole 304 is formed at one end thereof, and a protrusion 306 is formed at an inner side of the other end thereof to be inserted into the insertion hole 414. Housing 300; A coupling shaft 322 is formed to pass through the through hole 304, a guide shaft 324 is formed at the center of the side opposite to the coupling shaft 322, the first cylindrical portion on the outer periphery of the guide shaft 324 326 is formed, the first waveform surface 328 consisting of a continuous surface that is horizontal to the guide shaft 324 on the upper end surface of the first cylindrical portion 326 and has a waveform wave of two wavelengths in one rotation Rotation slip part 320 is formed is rotatably inserted into the inner space (302); A guide hole 332 to which the guide shaft 324 is rotatably coupled is formed at the center thereof, and a second cylindrical portion 334 is formed at an outer circumference of the guide hole 332, and an upper end of the second cylindrical portion 334 is formed. A fixed slip portion 330 which is formed along the surface of the second waveform surface 336 corresponding to the first waveform surface 328 and is rotatably inserted into the inner space 302; One end is coupled to the protrusion 306, the other end is inserted into the inner space 302 in the state holding the fixed slip 330; 340; consists of.

A sliding protrusion 338 is formed at a side of the fixed slip part 330, and a moving direction of the fixed slip part 330 is inserted into the inner space 302 of the housing 300 so as to be slidably inserted. Accordingly, the sliding groove 308 is formed.

On the other hand, the motor 350 is a geared motor 350 that can be rotated in the forward or reverse direction, the switch 408 for rotating the motor 350 is installed in the body 400 where the user is convenient to use.

FIG. 8 is a side sectional view of the motor shown in FIG. 4, and FIG. 9 is a plan sectional view of the motor shown in FIG. 4. Motor 350 shown in this figure, the power generating unit 351 for rotating the first rotary shaft 352 by generating a rotary force by the power source, and the second rotary shaft by reducing the rotational speed of the first rotary shaft 352 It consists of a reduction unit (353) for transmitting the rotational force to the one-way power transmission through the (358).

The reduction unit 353 includes a center gear 354, a plurality of planetary gears 355 meshed around the center gear 354 and having a larger number of teeth than the center gear 354, and a plurality of planetary gears. The inner gear gear 356 meshed by the outer periphery of 355 and the disk 367 in which the center of the many planetary gears 355 are axially supported are made into one set, and it consists of a several layer. In the above, the lowermost center gear 354 is rotated by being coupled to the first rotation shaft 352, and the lowermost center gear 354 is rotated by the lower disk 367, and the uppermost disk 367 is formed on the upper disk 367. The two rotation shaft 358 is fixed.

And the one-way power transmission unit, the worm gear 362 is fixed to the second rotation shaft 358 of the motor 350 is rotated; A worm wheel 364 formed at the central axis 366 by a coupling groove 368 rotated by the worm gear 362 and fixedly inserted into the coupling shaft 322; It consists of a gear housing 370 is fixed to the motor 350 and the central shaft 366 is installed in the space provided in the main body 400.

Hereinafter, the operation of the first embodiment having the above configuration will be described.

FIG. 6 is an assembled cross-sectional view of the cover hinge device shown in FIG. 4.

First, the operation of automatically opening and closing the cover 410 from the main body 400 using the switch 408 will be described.

When the switch 408 is turned on to open the cover 410 while the cover 410 is closed to the main body 400, the power generating unit 351 of the motor 350 generates a rotational force by supplying power. The first rotation shaft 352 is rotated, and the reduction unit 353 reduces the rotation speed of the first rotation shaft 352.

When the center gear 354 rotates by the first rotation shaft 352, the deceleration part 353 rotates the planetary gears 355 engaged with the center gear 354 and at the same time surrounds the center gear 354. Will be rotated. Since the number of teeth of the planetary gears 355 is greater than that of the center gear 354, a deceleration phenomenon occurs, and the rotation speed of the first rotation shaft 352 is decelerated and transmitted to the disc 367. And the disk 367 transmits a rotational force to the upper center gear 354, the deceleration action of the rotational speed is continuously generated by the planetary gears 355 of the upper portion. As a result, the second rotation shaft 358 fixed to the upper disc 367 is rotated in a state in which the rotation speed is decreased and the rotation force is increased compared to the first rotation shaft 352.

The second rotary shaft 358 rotates the worm wheel 364 through the worm gear 362. In this process, the gear housing 370 fixes the position of the worm wheel 364.

As the worm wheel 364 rotates, the coupling shaft 322 inserted into the coupling groove 368 formed in the central axis 366 of the worm wheel 364 rotates, and the rotary slip part 320 integral with the coupling shaft 322 is rotated. ) Rotates, the peak of the first waveform surface 328 of the rotary slip portion 320 and the valley of the second waveform surface 336 of the fixed slip portion 330 is coupled, Since the bone remains in the state of being coupled with the acid of the second waveform surface 336, the fixed slip portion 330 also rotates together.

Accordingly, the housing 300 into which the fixed slip part 330 is rotatably inserted also rotates to open the cover 410.

When the cover 410 is open, a separate sensing means detects the opening of the cover 410 and stops the driving of the motor 350.

In addition, when the switch 408 is turned on to close the cover 410 in a state in which the cover 410 is opened from the main body 400, reverse power is applied to the geared motor 350 by applying reverse power. At this time, the rotational force of the motor 350 is decelerated and transmitted to the rotary slip part 320 through the worm gear 362 and the worm wheel 364, and the rotary slip part 320 rotates together with the fixed slip part 300 to cover the cover. The 410 is rotated in the opposite direction to close the main body 400.

On the other hand, the function at the time of opening and closing a cover manually is demonstrated.

First, when the cover 410 is lifted up while the cover 410 is closed to the main body 400 in order to open the cover 410, the holder 412 along with the cover 410 rotates to open the housing 300. Rotate together

Therefore, it rotates together with the fixed slip portion 330 rotatably inserted into the housing 300. However, the rotary slip portion 320 facing the fixed slip portion 330 is inserted into the coupling groove 368 formed in the central shaft 366 of the worm wheel 364, the worm wheel 364, Since the worm gear 362 cannot be reversely rotated, the fixed slip portion 330 fixed to the worm wheel 364 does not rotate.

Therefore, the fixed slip portion 330 and the rotary slip portion 320 are rotated to cross each other, the sliding phenomenon occurs to manually open and close the cover 410.

7 is a cross-sectional view of the coupling state of the cover 410 is rotated in FIG. As shown in this figure, when the cover 410 is opened about 90 degrees from the main body 400, the peak of the first waveform surface 328 slides and slides to the peak of the second waveform surface 336 to spring. 340 is in the most compressed state.

Subsequently, when the cover 410 is opened to the call angle, the peak of the first waveform surface 328 is coupled to the valley beyond the peak of the second waveform surface 336, and the spring 340 is extended to the restoring force and the fixed slip portion ( 330).

In this operation, the guide hole 332 of the fixed slip part 330 is inserted into the guide shaft 324 of the rotary slip part 320 to smoothly interact with the fixed slip part 330 and the rotary slip part 320. The center guides and slides to make it happen. And the fixed slip portion 330 is a sliding protrusion 338 is inserted into the sliding groove 308 to prevent the rotational movement is only linear movement by the elasticity of the spring 340.

On the contrary, when the cover 410 is manually closed while the cover 410 is open, the peak of the first waveform surface 328 rotates and slides toward the peak of the second waveform surface 336 so that the spring 340 is most compressed. . Subsequently, when the cover 410 is completely closed, the peak of the first waveform surface 328 is coupled to the valley beyond the peak of the second waveform surface 336, and the spring 340 is extended to the restoring force and the fixed slip portion 330 is closed. To touch.

As described above, the fixed slip 330 and the rotary slip 320 intersecting each other in the process of opening and closing the cover 410 may have the first waveform surface 328 and the second waveform surface 336 having a wave shape. As it rotates smoothly in contact, it is not subjected to strong torque, friction is reduced, wear is reduced and noise is generated.

The following describes a second embodiment of the present invention.

10 is an exploded perspective view of main parts of the cover hinge device according to the second embodiment.

As shown in this figure, the configuration of the clutch portion is different from that of the first embodiment, and the rest of the configuration is the same.

The clutch part of the second embodiment has an inner space 302 open at one side, a through hole 304 is formed at one end thereof, and a protrusion 306 is formed at the inner side of the other end thereof so that the insertion hole 414 is formed. A housing 300 inserted into the housing 300; A coupling shaft 322 is formed to pass through the through hole 304, a guide shaft 324 is formed at the center of the side opposite to the coupling shaft 322, the guide shaft 324 and the coupling shaft 322 A first cylindrical portion 326 having a cam protrusion 327 protruding toward the guide shaft 324 in the intermediate region and rotatably inserted into the inner space 302; A guide hole 332 to which the guide shaft 324 is rotatably coupled is formed at the center thereof, and a cam groove 335 and a planar portion 337 corresponding to the cam protrusion 327 are continuous on the outer circumference of the guide hole 332. A second cylindrical portion 334 formed as a fixed slip portion 330 rotatably inserted into the inner space 302; And a spring 340 inserted into the inner space 302 with one end coupled to the protrusion 306 and the other end holding the fixed slip 330.

In the cover hinge device, when the cover 410 is manually opened from the main body 400 to some extent, the cam protrusion 327 is located at the flat portion 337 by moving away from the cam groove 335 so that the rotation force is applied to the cover 410. Ineffective, the spring 340 is in a compressed state. In this state, if the cover 410 is no longer rotated, the cover 410 may be stopped in a state in which the cover 410 is partially opened. That is, free stop is possible.

Subsequently, when the cover 410 is opened to the call angle, the cam protrusion 327 is again coupled to the cam groove 335 through the flat portion 337, the spring 340 is extended to the restoring force, and the fixed slip portion 330 is supported. do.

The following describes a third embodiment according to the present invention.

11 is an exploded perspective view showing main parts of the cover hinge device according to the third embodiment.

In the third embodiment, the cam protrusions 327 and the cam grooves 335 have different shapes in the same configuration as the second embodiment. The cam protrusion 327 of the third embodiment has a shape so as to extend radially about the guide shaft 324, and the cam groove 335 has a shape corresponding to the cam protrusion 327.

As such, the cam groove 335 and the cam protrusion 327 are linearly contacted when the cam groove 335 and the cam protrusion 327 are radially expanded to be separated from each other in a coupled state. The effect is to rotate smoothly.

The following describes a fourth embodiment according to the present invention.

12 is an exploded perspective view of main parts of the cover hinge device according to the fourth embodiment.

In the fourth embodiment, the cam protrusions 327 and the cam grooves 335 are different in the same configuration as the second embodiment. The cam protrusion 327 of the fourth embodiment has a pair of spheres formed on both sides of the guide shaft 324, and the cam groove 335 has a shape corresponding to the cam protrusion 327.

As such, when the cam groove 335 and the cam protrusion 327 are spherically formed, the cam groove 335 and the cam protrusion 327 are separated from each other, thereby reducing the resistance, thereby smoothly rotating the cover 410.

Next, a fifth embodiment of the present invention will be described.

13 is an exploded perspective view illustrating main parts of the cover hinge device according to the fifth embodiment.

As shown in this figure, the configuration of the clutch portion is different from that of the first embodiment, and the rest of the configuration is the same.

In the clutch portion of the fifth embodiment, an inner space 302 having one side open is formed, a through hole 304 is formed at one end thereof, and a protrusion 306 is formed at the inner side of the other end thereof, so that the insertion hole 414 is formed. A housing 300 inserted into the housing 300; A coupling shaft 322 is formed to pass through the through hole 304, a guide shaft 324 is formed at the center of the side opposite to the coupling shaft 322, the first cylindrical portion on the outer periphery of the guide shaft 324 326 is formed, the first waveform surface 328 consisting of a continuous surface that is horizontal to the guide shaft 324 on the upper end surface of the first cylindrical portion 326 and has a waveform wave of two wavelengths in one rotation A rotation slit 320 having a cylindrical rim 329 formed on an outer circumference of the first waveform surface 328 and rotatably inserted into the inner space 302; A guide hole 332 to which the guide shaft 324 is rotatably coupled is formed at the center thereof, and a second cylindrical portion 334 rotatably inserted into the rim 329 is formed at an outer circumference of the guide hole 332. The second cylindrical surface 336 corresponding to the first waveform surface 328 is formed along the upper surface of the second cylindrical portion 334, and the second cylindrical portion in a direction facing the guide hole 332. A fixed slip portion 330 formed at 334 to be rotatably inserted into the inner space 302; One end is coupled to the projection 306, the other end is coupled to the fixed shaft 339 and the compression spring 340 inserted into the interior space 302; consists of.

The guide hole 332 of the fixed slip 330 is rotatably coupled to the guide shaft 324 of the rotary slip 320 in a state where the cover hinge device is assembled, and the rim of the rotary slip 320 is The second cylindrical portion 334 of the fixed slip portion 330 is inserted into the 329 so that the first waveform surface 328 and the second waveform surface 336 are in close contact with each other so as to be rotatable and sliding, and the compression spring 340 touches the back of the fixed slip portion 330.

The coupling shaft 322 of the rotary slip part 320 is fixed to the coupling groove 368 formed in the central axis 366 of the worm wheel 364 through the through hole 304 of the housing 300. In addition, the sliding protrusion 338 of the fixed slip portion 330 is inserted into the sliding groove 308 of the housing 300 to prevent rotation.

When the cover 410 is closed to the main body 400, the peaks of the first waveform surface 328 of the rotary slip part 320 and the valleys of the second waveform surface 336 of the fixed slip part 330 are coupled to each other. The valley of the first waveform surface 328 remains coupled to the acid of the second waveform surface 336.

Subsequently, when the cover 410 starts to open, the holder 412 fixed to the cover 410 and the housing 300 inserted into the insertion hole 414 of the holder 412 rotate together. In this case, the fixed slip part 330 inserted into the inner space of the housing 300 rotates together with the housing 300 and is fixedly inserted into the coupling groove 368 formed in the central axis 366 of the worm wheel 364. The rotary slip 320 having the shaft 322 does not rotate. Therefore, the fixed slip portion 330 and the rotary slip portion 320 are rotated while crossing each other, the sliding phenomenon occurs.

When the cover 410 is opened about 90 degrees from the main body 400, the peak of the first waveform surface 328 rotates and slides toward the peak of the second waveform surface 336 so that the compression spring 340 is most compressed. It becomes a state.

Subsequently, when the cover 410 is opened to the call angle, the peak of the first waveform surface 328 is coupled to the valley beyond the peak of the second waveform surface 336, and the compression spring 340 is extended to the restoring force and the fixed slip portion is formed. Touch (330).

In this operation, the second cylindrical portion 334 of the fixed slip portion 330 is inserted into the rim 329 of the rotary slip portion 320 to prevent separation of the fixed slip portion 330 and the rotary slip portion 320. And, the guide shaft 324 of the rotary slip portion 320 is inserted into the guide hole 332 of the fixed slip portion 330 so that the interaction between the fixed slip portion 330 and the rotary slip portion 320 is made smoothly. Strongly support the center. And the fixed slip portion 330 is a sliding protrusion 338 is inserted into the sliding groove 308 to prevent rotational movement and only the linear movement by the elasticity of the compression spring 340.

On the contrary, when the cover 410 is closed in the open state, the peak of the first waveform surface 328 rotates and slides toward the peak of the second waveform surface 336 so that the compression spring 340 is in the most compressed state. Subsequently, when the cover 410 is completely closed, the acid of the first waveform surface 328 is again coupled to the valley beyond the acid of the second waveform surface 336, and the compression spring 340 is extended to the restoring force and the fixed slip 330 is closed. )).

As described above, the fixed slip 330 and the rotary slip 320 which are staggered in the process of opening and closing the cover 410 face each other with the first waveform surface 328 and the second waveform surface 336 having a wave shape. As it rotates smoothly in contact, it is not subjected to strong torque, friction is reduced, wear is reduced and noise is generated.

As described above, the present invention is a clutch having a hinge portion for hinge-rotating the cover 410 and the main body 400, and a coupling shaft 322 fixed to the hinge portion and slipping against a predetermined torque or more. The cover of the mobile phone is made up of a unit, a motor 350 installed in the main body 400, a clutch unit and a one-way power transmission unit connected to the motor 350 and transmitting power of the motor 350 to the coupling shaft 322. As the hinge device, as the switch 408 is turned on, the motor 350 rotates the one-way power transmission unit to automatically open and close the cover 410 through the clutch unit, thereby increasing convenience in using the mobile phone.

In the above, the present invention has been described as an embodiment, but the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments, and has a general knowledge in the field of the present invention without departing from the gist of the present invention. Anyone who grows up will be able to make various variations.

Claims (12)

A hinge part for hinge-rotating the cover 410 and the main body 400; A clutch part fixed to the hinge part and having a coupling shaft 322 for slipping against a predetermined torque or more; A motor 350 installed in the main body 400; And It is connected to the clutch unit and the motor 350, and transmits the power of the motor 350 to the coupling shaft 322, and the rotational force of the coupling shaft 322 does not transmit to the motor 350. One-way power transmission unit; Cover hinge device of a mobile phone comprising a. The holder part 412 of claim 1, wherein the hinge part is fixed to the cover 410, the insertion hole 414 into which the clutch part is inserted in one direction is opened, and the rotation shaft 416 protrudes in the other direction. ; And And a support part (402) formed on the main body (400) and having a rotating hole (404) rotatably supporting the rotating shaft (416). The method of claim 1, wherein the clutch unit, An inner space 302 having one open side is formed, a through hole 304 is formed at one end, and a protrusion 306 is formed at an inner side of the other end to be inserted into the insertion hole 414. ); The coupling shaft 322 is formed to pass through the through hole 304, a guide shaft 324 is formed at the center of the side opposite to the coupling shaft 322, the outer periphery of the guide shaft 324 The first cylindrical portion 326 is formed, the upper surface of the first cylindrical portion 326 is made of a continuous surface horizontally toward the guide shaft 324 and has a two-wave waveform bend in one rotation A rotating slip part 320 having a first waveform surface 328 rotatably inserted into the inner space 302; A guide hole 332 to which the guide shaft 324 is rotatably coupled is formed at the center thereof, and a second cylindrical portion 334 is formed at an outer circumference of the guide hole 332, and the second cylindrical portion 334 is formed. A fixed slip part 330 formed with a second waveform surface 336 corresponding to the first waveform surface 328 and rotatably inserted into the inner space 302 along the top surface of One end is coupled to the protrusion 306, the other end is a spring 340 inserted into the inner space 302 in a state holding the fixed slip portion 330; Cover of the mobile phone comprising a Hinge device. The method according to claim 3, wherein the sliding projection (338) is formed on the side of the fixed slip portion (330); The cover of the mobile phone, characterized in that the sliding groove 308 is formed in the inner space 302 of the housing 300 along the moving direction of the fixed slip portion 330 so that the sliding protrusion 338 is slidably inserted. Hinge device. The method of claim 1, wherein the clutch unit, An inner space 302 having one open side is formed, a through hole 304 is formed at one end, and a protrusion 306 is formed at an inner side of the other end to be inserted into the insertion hole 414. ); A coupling shaft 322 is formed to pass through the through hole 304, and a guide shaft 324 is formed at a center of the side opposite to the coupling shaft 322. The guide shaft 324 and the coupling shaft are formed. The first cylindrical portion 326 having a cam protrusion 327 protruding toward the guide shaft 324 in the middle region of the 322 is formed to be rotatably inserted into the inner space 302 320 ); A guide hole 332 to which the guide shaft 324 is rotatably coupled is formed at the center thereof, and a cam groove 335 and a planar portion 337 corresponding to the cam protrusion 327 on the outer circumference of the guide hole 332. A second cylindrical portion 334 having a plurality of consecutively formed fixed slip portions 330 rotatably inserted into the inner space 302; And One end is coupled to the protrusion 306, the other end is a spring 340 inserted into the inner space 302 in a state holding the fixed slip portion 330; Cover of the mobile phone comprising a Hinge device. The method of claim 5, wherein the cam protrusion 327 is formed in a shape to extend in the radial direction about the guide shaft 324, the cam groove 335 is characterized in that the shape corresponding to the cam protrusion 327. Cover hinge device for mobile phones. The cam protrusion 327 has a pair of spherical shapes formed on both sides of the guide shaft 324, and the cam groove 335 has a shape corresponding to the cam protrusion 327. Cover hinge device for mobile phones. The method of claim 1, wherein the clutch unit, An inner space 302 having one open side is formed, a through hole 304 is formed at one end, and a protrusion 306 is formed at an inner side of the other end to be inserted into the insertion hole 414. ); A coupling shaft 322 is formed to pass through the through hole 304, a guide shaft 324 is formed at a center of the side opposite to the coupling shaft 322, and is formed on an outer circumference of the guide shaft 324. The first cylindrical portion 326 is formed, the upper surface of the first cylindrical portion 326 is made of a continuous surface that is horizontal toward the guide shaft 324 and has a second wave shape bend in one rotation A first slip surface 328 is formed, and a cylindrical rim 329 is formed on an outer circumference of the first wavy surface 328 to be rotatably inserted into the inner space 302; A guide cylinder 332 to which the guide shaft 324 is rotatably coupled is formed at the center thereof, and a second cylindrical portion rotatably inserted into the rim 329 on the outer circumference of the guide hole 332. 334 is formed, and a second waveform surface 336 corresponding to the first waveform surface 328 is formed along the upper surface of the second cylindrical portion 334, and is opposed to the guide hole 332. A fixed slip part 330 formed on the second cylindrical part 334 in a direction to be rotatably inserted into the inner space 302; And A cover hinge device of a mobile phone, comprising: a compression spring 340 having one end coupled to the protrusion 306 and the other end coupled to the fixed shaft 339 and inserted into the inner space 302. . The method of claim 1, wherein the motor (350) is a geared motor (350) capable of rotating in the forward and reverse directions; Cover hinge device of the mobile phone, characterized in that the switch for controlling the rotation of the motor 350 is installed on the side of the main body (400). The method of claim 1, wherein the motor 350 comprises a power generating unit 351 for rotating the first rotating shaft 352 by generating a rotational force by a power source; And And a reduction unit (353) which transmits rotational force to the one-way power transmission unit through the second rotation shaft (358) by reducing the rotation speed of the first rotation shaft (352). The method according to claim 10, wherein the reduction unit 353, the center gear 354; A plurality of planetary gears 355 meshed around the center gear 354 and having a larger number of teeth than the center gear 354; Internal toothed gears 356 engaged at outer peripheries of the plurality of planetary gears 355; And The disk 367, the center of the plurality of planetary gears 355 is axially supported; made of a plurality of layers in one set, The lowermost center gear 354 is rotated by being coupled to the first rotation shaft 352, and the lowermost center gear 354 is rotated by the lower disk 367 below the uppermost disk 367. ) Is a cover hinge device of a mobile phone, characterized in that the second rotating shaft (358) is fixed. The unidirectional power transmission unit of claim 1, wherein the one-way power transmission unit includes: a worm gear 362 rotated by the motor 350; A worm wheel 364 that is rotated by the worm gear 362 and has a coupling groove 368 formed at a central axis 366 to which the coupling shaft 322 is fixedly inserted; And And a gear housing (370) fixed to the motor (350) and the central shaft (366) and installed in a space provided in the main body (400).