KR100465227B1 - Cover hinge mechanism of cellular phone - Google Patents

Abstract

The present invention is to open and close the cover with respect to the main body, so that the front and rear surfaces of the cover is inverted, so that the large LCD screen of the cover can be seen even in the off state of the mobile phone. The present invention for this purpose, the cover 20 is installed in the hinge cylinder 100 and the rotation space 110 formed in the hinge cylinder 100 to engage the hinge rotatable from the main body 10, the cover 20 The rotation part 200 and the first rotation space 130 formed in the hinge cylinder 100 are inserted into the rotation part 200 to enable the rotation operation of the cover 20 and the open state with respect to the main body 10. Cover hinge device of a mobile phone including a clutch unit 300 for generating a stop force in the, the rotation unit 200 is rotated by the cover 20, the large liquid crystal screen of the cover 20 even when not using the mobile phone It is to reduce the number of the LCD screen to reduce the manufacturing cost of the mobile phone by rotating the 30 to the outside so that the large LCD screen 30 can be seen.

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, and in particular, the cover is opened and closed with respect to the main body, so that the front and rear surfaces of the cover are inverted, so that the large LCD screen of the cover can be seen even in the off state of the mobile phone.

As an example of a hinge device of a mobile phone, a 'hinge device of a mobile phone' is disclosed in patent application No. 10-1998-0046799.

The cover hinge device of a general mobile phone including the patent application uses a hinge device as an intermediary means for causing the cover (meaning to include a flip or folder) to be hinged from the main body.

Such a hinge device has a function of maintaining the current state with a certain amount of elastic force in the closed state and the open state of the cover, respectively.

On the other hand, the cover is provided with a large liquid crystal screen on the surface in contact with the main body, the large liquid crystal screen is in contact with the main body when the cover is closed with respect to the main body is not visible to the user. Therefore, the large LCD screen of the cover is automatically set to be always off when the mobile phone off, the large LCD screen is also turned on only when the cover is opened.

By the way, the cover hinge device of the general mobile phone as illustrated above only has a function of opening and closing the cover with respect to the main body, so that when the cover is closed, the user cannot see the large LCD screen. In addition, since a small LCD screen must be installed on the outer surface of the cover to display text messages even when the mobile phone is turned off, the manufacturing price of the mobile phone increases.

The present invention has been made to solve the above problems, the object of the present invention is that the cover is opened and closed with respect to the main body, while the front and rear surfaces of the cover is inverted, so that the large LCD screen of the cover even when the mobile phone is turned off In order to facilitate the user's convenience and to reduce the number of LCD screens to reduce the manufacturing cost of the mobile phone.

1 is an exploded perspective view of a cover hinge device according to a first embodiment of the present invention.

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

Figure 3 is a perspective view of the closed state of the mobile phone is applied a cover hinge device according to the present invention.

4 is a perspective view of the cover in the open state in FIG.

5 is a perspective view of a state in which the cover is rotated in FIG.

6 is a perspective view of the cover in the closed state in FIG.

7 is an exploded perspective view of the cover hinge device according to the second embodiment of the present invention.

8 is a cross-sectional view of the coupling hinge shown in FIG.

9 is an exploded perspective view of the cover hinge device according to the third embodiment of the present invention.

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

<Explanation of symbols for main parts of drawing>

10: main body 12: hinge hole

14: second square hole 20: cover

30: large LCD screen 100: hinge cylinder

110: rotation space portion 112: coupling hole

114: shaft support portion 130, 140, 150: rotational space portion

134: second guide groove 142: first shaft hole

144: third guide groove 152: fourth guide groove

154: second shaft hole 210: cylinder

212: arm 214: first shaft ball

220: hollow 222: first guide groove

230: first compression spring 240: first rotary slip portion

242: first through hole 244: first guide protrusion

246: first slip surface 248: first ball

250: first fixed slip portion 252: first square ball

254: second slip surface 256: first hemispherical groove

258: first guide groove 260: first rotating shaft

262: first corner projection 264: first annular groove

266: screw 270: first ring

310: second compression spring

320: second rotary slip 322: third through hole

324: third slip surface 326: second hemispherical groove

328: second guide groove 330: second fixed slip portion

332: fourth through hole 334: fourth slip surface

336: second corner protrusion 338: second ball

340: second axis of rotation 342: second annular groove

344: locking end 350: second ring

400: third compression spring 410: third rotary slip

412: fifth slip surface 414: fifth through hole

416: third hemispherical groove 418: third guide groove

420: third guide projection 430: third fixed slip portion

432: third corner protrusion 434: sixth slip surface

436: first guide shaft 440: third ball

500: fourth compression spring 510: fourth rotary slip

512: seventh slip surface 514: sixth through hole

516: fourth hemispherical groove 518: fourth guide groove

520: fourth guide protrusion 530: fourth fixed slip portion

532: fourth corner protrusion 534: eighth slip surface

536: 2nd guide shaft 540: 4th ball

The present invention for achieving the above object is a hinge cylinder for engaging the cover rotatably hinged from the main body; A rotation part installed in the rotation space part formed in the hinge cylinder to enable a rotation action of the cover; And a clutch part inserted into a rotation space formed in the hinge cylinder and generating a stopping force in a closed state and an open state of the cover with respect to the main body.

Hereinafter, a first embodiment of a cover hinge device of a mobile phone according to the present invention will be described.

1 is an exploded perspective view of a cover hinge device according to a first embodiment of the present invention, Figure 2 is a cross-sectional view of the coupling hinge device shown in FIG.

The hinge cylinder 100 of this embodiment has the rotation space part 110 opened upward, and the 1st rotation space part 130 in which the 2nd guide groove 134 of the horizontal direction opened and the horizontal direction was formed.

The rotation part includes a hollow 220 which is opened downward, a first shaft hole 214 is formed on an upper surface of the hollow 220, and a first guide groove 222 in a longitudinal direction on the inner surface of the hollow 220. A cylinder 210 having an arm 212 coupled to the cover 20 thereon; a first compression spring 230 inserted into the hollow 220; A second shaft hole 242 is formed at the center, and a first guide protrusion 244 slidably coupled to the first guide groove 222 is formed at an outer circumferential surface thereof, and a first slip surface 246 having a flat surface is formed below. A first rotary slip 240 having a pair of first balls 248 fixed to the first slip surface 246 at a position opposed to the second shaft hole 242; A first square hole 252 is formed at a center thereof, and a second slip surface 254 corresponding to the first slip surface 246 is formed, and a pair of first balls 248 are formed on the second slip surface 254. A first fixed slip portion 250 having a pair of first hemispherical grooves 256 formed at positions corresponding to the first hemisphere grooves 256 and a first guide groove 258 connecting each first hemispherical groove 256 in a circular shape; It is fixed upright in the rotation space 110, rotatably coupled to the first square hole 252, the second shaft hole 242, the first compression spring 230 and the first shaft hole 214, protruding end A first annular groove 264 formed in the first rotation shaft 260 having a first angular protrusion 262 coupled to the first angular hole 252; And a first ear ring 270 coupled to the first annular groove 264 above the first shaft hole 214.

Arm 212 formed on the top of the cylinder 210 is for coupling to the cover 20 with a screw.

In addition, a pair of protrusions (not shown) are formed on the outer circumferential surface of the cylinder 210, and the protrusions are disposed at 180 ° intervals in the rotation space 110 of the hinge cylinder 100. By forming a protrusion (not shown), the cylinder 210 can rotate by repeating 180 ° about the rotation axis 260. Therefore, the wires connecting the signals of the main body 10 and the cover 20 are prevented from being twisted.

The first rotation shaft 260 is fixed to the rotation space 110 using a screw 266.

Meanwhile, the clutch unit may include a second compression spring 310 inserted into the first pivot space 130; It is inserted into the first pivot space 130 from the outside of the second compression spring 310, the third shaft hole 322 is formed in the center, the planar third slip surface 324 is formed on one surface, Two or more second hemispherical grooves 326 are formed in the three slip surfaces 324 at positions opposed to the third shaft hole 322, and the second induction grooves connecting each second hemispherical groove 326 in a circular shape ( 328 is formed, the second rotary slip portion 320 is formed with a second guide protrusion (329) slidably coupled to the second guide groove 134; A fourth shaft hole 332 is inserted into the first pivot space 130 from the outside of the second rotary slip part 320, and corresponds to the third shaft hole 322 in the center thereof, and has a third slip surface on one surface thereof. A fourth slip surface 334 corresponding to 324 is formed, and a pair of second balls 338 inserted into the second hemispherical groove 326 is fixed to the fourth slip surface 334, and on the other surface thereof. A second fixed slip part 330 having a second corner protrusion 336 coupled to the second corner hole 14 formed in the main body 10; It is rotatably coupled to the fourth shaft hole 332 and the third shaft hole 322 and the second compression spring 310, the second annular groove 342 is formed at the front end, the rear end is caught by the square protrusion 336 A second rotating shaft 340 having a locking end 344 formed therein; The second space ring 350 is coupled to the second annular groove 342 at the rotation space 110.

The general mobile phone is set so that the large LCD screen 30 is also turned off when the cover 20 is closed to the main body 10. In the mobile phone of the present embodiment, the cover 20 is inverted so that the large LCD screen 30 is turned outward. When closed to the main body 10 in the facing state, a sensor and a control function for turning on the large LCD screen 30 are required separately.

Hereinafter, the operation of the cover rotation apparatus of the mobile phone having the above configuration will be described.

3 is a perspective view of the mobile phone to which the cover hinge device shown in Figure 1 is applied, Figure 4 is a perspective view of the cover is open in Figure 3, Figure 5 is a perspective view of the cover is rotated in Figure 4, 6 is a perspective view of the cover in the closed state in FIG.

In a state where the cover hinge device is installed in the mobile phone, the cylinder 210 is fixed to the cover 20, and the first guide protrusion 244 of the first rotary slip part 240 is the first guide groove (of the cylinder 210). 222 is coupled to the cover 20, the cylinder 210 and the first rotary slip portion 240 is in a state of being integrally rotated.

The first rotation shaft 260 is fixed to the rotation space 110 of the hinge cylinder 100, and the first square hole 252 of the first fixed slip portion 250 is the first of the first rotation shaft 260. The rotation is prevented by being coupled to the square protrusion 262.

In addition, the first compression spring 230 grips the first rotary slip portion 240 in the outward direction so that the first slip surface 246 is elastic to the second slip surface 246 of the first fixed slip portion 250. Contact with.

Meanwhile, the second square protrusion 336 of the second fixed slip part 330 is coupled to the second square hole 14 of the main body 10 to prevent rotation. In addition, the shaft support portion 114 is coupled to the coupling hole 112 formed at the other side of the hinge cylinder 100, and the other side of the shaft support 114 is inserted into the hinge hole 12 of the main body 10 so that the hinge cylinder ( 100 is rotatable.

In addition, the second compression spring 310 grips the second rotary slip portion 320 outward so that the third slip surface 324 is elastic to the fourth slip surface 334 of the second fixed slip portion 330. To contact with.

On the other hand, the large liquid crystal screen 30 is provided on the surface where the cover 20 contacts the main body 10. However, when the cover 20 is closed with respect to the main body 10, the large LCD screen 30 of the cover 20 cannot be seen.

Therefore, when the large LCD screen 30 is to be viewed in a state where the mobile phone is turned off, the cover 20 is rotated from the main body 10 with the hinge cylinder 100 as an axis to be opened.

When the cover 20 starts to open, the hinge cylinder 100 rotates together. At this time, the second rotary slip portion 320 inserted into the first pivot space portion 130 of the hinge cylinder 100 alternates with the second fixed slip portion 330 fixed to the main body 10, and the second fixed portion is fixed. The second ball 338 fixed to the fourth slip surface 334 of the slip part 330 is separated from the second hemispherical groove 326 formed in the third slip surface 324 of the second rotary slip part 320. To move along the second guide groove 328.

At this time, the second compression spring 310 is in the most compressed state.

Subsequently, when the cover 20 is opened to the call angle, the second ball 338 enters another second hemispherical groove 326 formed in the third slip surface 324. The second compression spring 310 is extended to the restoring force and supports the second rotary slip part 320.

In this operation, the second rotary shaft 340 is inserted into the fourth through hole 332 of the second fixed slip part 330 and the third through hole 322 of the second rotary slip part 320 to rotate the second. The center is firmly supported so that the interaction between the slip part 320 and the second fixed slip part 330 is performed smoothly. The second guide protrusion 329 of the second rotary slip part 320 is inserted into the second guide groove 134 of the hinge cylinder 100 to prevent rotational movement and only linear movement.

Meanwhile, when the cover 20 is rotated in one direction while the cover 20 is open, the cylinder 210 fixed to the cover 20 rotates integrally.

Accordingly, the cylinder 210 and the first rotary slip part 240 rotate together with the cover 20 and are fixed to the rotation space part 110 of the hinge cylinder 100 coupled to the main body 10. The first fixed slip part 250 fixed to 260 does not rotate.

Accordingly, the first rotary slip part 240 is fixed to the first slip surface 246 of the first rotary slip part 240 while intersecting with the first fixed slip part 250 fixed to the hinge cylinder 100. The first ball 248 is separated from the first hemispherical groove 256 formed in the second slip surface 254 of the first fixed slip part 250 to move along the first guide groove 258.

At this time, the first compression spring 230 is in the most compressed state.

Subsequently, when the cover 20 is rotated 180 °, the first ball 248 again enters another first hemispherical groove 256 formed in the second slip surface 254. In addition, the first compression spring 230 is extended to the restoring force and supports the first rotary slip part 240.

In this operation, the first rotary shaft 260 is inserted into the first square hole 252 of the first fixed slip part 250 and the first through hole 242 of the first rotary slip part 240 to rotate the first. The slip portion 240 and the first fixed slip portion 250 may be firmly supported at the center so that the interaction between the slip portion 240 is performed smoothly. In addition, the first guide protrusion 244 of the first rotary slip part 240 is inserted into the first guide groove 222 of the cylinder 210 to prevent rotational movement and only linear movement.

And the projection of the cylinder 210 is caught by the corresponding projection of the hinge cylinder 100 to prevent excessive rotation of the cylinder (210).

In this state, when the user rotates the cover 20 and closes the main body 10, the large LCD screen 30 of the cover 20 is located on the upper surface, so that the user can turn the large LCD screen 30 even when the mobile phone is turned off. You will be able to see

When the user does not see the large LCD screen 30 of the cover 20, the reverse operation is performed in the reverse order to rotate the large LCD screen 30 of the cover 20 to face the main body 10. ).

Hereinafter, a second embodiment of the present invention will be described.

7 is an exploded perspective view of the cover hinge device according to the second embodiment of the present invention, Figure 8 is a cross-sectional view of the cover hinge device shown in FIG.

The hinge cylinder 100 of the present embodiment has a rotation space portion 110 which is open upward, and a third guide groove 144 that is opened upward and is bent in a horizontal direction from below in a vertical direction on both sides is formed. The second rotating space 140 has a first through hole 142 formed in a direction opposite to the rotation space 110.

The rotation part includes a hollow 220 which is opened downward, a first shaft hole 214 is formed on an upper surface of the hollow 220, and a first guide groove 222 in a longitudinal direction on the inner surface of the hollow 220. A cylinder 210 formed with an arm 212 coupled to the cover 20 above; A first compression spring 230 inserted into the hollow 220; A second shaft hole 242 is formed at the center, and a first guide protrusion 244 slidably coupled to the first guide groove 222 is formed at the outer circumferential surface thereof, and a first slip surface 246 having a flat surface is formed below. A first rotary slip 240 having a pair of first balls 248 fixed to the first slip surface 246 at a position opposed to the second shaft hole 242; A first square hole 252 is formed at a center thereof, and a second slip surface 254 corresponding to the first slip surface 246 is formed, and a pair of first balls 248 are formed on the second slip surface 254. A first fixed slip portion 250 having a pair of first hemispherical grooves 256 formed at positions corresponding to the first hemisphere grooves 256 and a first guide groove 258 connecting each first hemispherical groove 256 in a circular shape; It is fixed upright in the rotation space 110, rotatably coupled to the first square hole 252, the second shaft hole 242, the first compression spring 230 and the first shaft hole 214, protruding end A first annular groove 264 formed in the first rotation shaft 260 having a first angular protrusion 262 coupled to the first angular hole 252; And a first ear ring 270 coupled to the first annular groove 264 above the first shaft hole 214.

Arm 212 formed on the top of the cylinder 210 is for coupling to the cover 20 with a screw.

In addition, a pair of protrusions (not shown) are formed on the outer circumferential surface of the cylinder 210, and a pair of corresponding protrusions (not shown) are disposed at 180 ° intervals in the rotation space 110 of the hinge cylinder 100. By forming the cylinder 210, the cylinder 210 can rotate 180 ° repeatedly about the rotation axis 260. Therefore, the wires connecting the signals of the main body 10 and the cover 20 are prevented from being twisted.

The first rotation shaft 260 is fixed to the rotation space 110 using a screw 266.

Meanwhile, the clutch unit may include a third compression spring 400 inserted into the second rotation space unit 140; It is inserted into the second rotation space portion 140 from the outside of the third compression spring 400, the fifth shaft hole 414 is formed in the center, the planar fifth slip surface 412 is formed on one surface, Five or more third hemispherical grooves 416 are formed in the five slip surfaces 412 at positions opposite to the fifth shaft hole 414, and each third hemispherical groove 416 is formed in a third induction groove ( 418 is formed, the third rotary slip portion 410 is formed on both sides formed with a third guide protrusion 420 slidably coupled to the third guide groove 144; A first guide shaft 436 is inserted into the second pivot space 140 from the outside of the third rotary slip 410 and is rotatably coupled to the fifth shaft hole 414 at the center thereof. A sixth slip surface 434 corresponding to the fifth slip surface 412 is formed, and a pair of third balls 440 inserted into the third hemispherical groove 416 is fixed to the fifth slip surface 434. A third fixed slip part 430 having a third corner protrusion 432 formed on the other surface thereof and coupled to the second corner hole 14 formed in the main body 10 by passing through the first through hole 142; Have

The general mobile phone is set so that the large LCD screen 30 is also turned off when the cover 20 is closed to the main body 10. In the mobile phone of the present embodiment, the cover 20 is inverted so that the large LCD screen 30 is turned outward. When closed to the main body 10 in the facing state, a sensor and a control function for turning on the large LCD screen 30 are required separately.

Hereinafter, the operation of the cover rotation apparatus of the mobile phone having the above configuration will be described.

3 is a perspective view of the mobile phone to which the cover hinge device is applied according to the present embodiment in a closed state, Figure 4 is a perspective view of the cover is open in Figure 3, Figure 5 is a perspective view of the cover is rotated in Figure 4, 6 is a perspective view of the cover in the closed state in FIG.

In a state where the cover hinge device is installed in the mobile phone, the cylinder 210 is fixed to the cover 20, and the first guide protrusion 244 of the first rotary slip part 240 is the first guide groove (of the cylinder 210). 222 is coupled to the cover 20, the cylinder 210 and the first rotary slip portion 240 is in a state of being integrally rotated.

The first rotation shaft 260 is fixed to the rotation space 110 of the hinge cylinder 100, and the first square hole 252 of the first fixed slip portion 250 is the first of the first rotation shaft 260. The rotation is prevented by being coupled to the square protrusion 262.

In addition, the first compression spring 230 grips the first rotary slip portion 240 in the outward direction so that the first slip surface 246 is elastic to the second slip surface 246 of the first fixed slip portion 250. Contact with.

Meanwhile, the third square protrusion 432 of the third fixed slip part 430 passes through the first shaft hole 142 of the hinge cylinder 100 and is coupled to the second square hole 14 of the main body 10 to be rotated. Is prevented. In addition, the shaft support portion 114 is coupled to the coupling hole 112 formed at the other side of the hinge cylinder 100, and the other side of the shaft support 114 is inserted into the hinge hole 12 of the main body 10 so that the hinge cylinder ( 100 is rotatable.

In addition, the third compression spring 400 holds the third rotary slip 410 in the outward direction so that the fifth slip surface 412 is elastic to the sixth slip surface 434 of the third fixed slip portion 430. To contact with.

In addition, the third square protrusion 432 of the third fixed slip part 430 is coupled to the second square hole 14 of the main body 10 to prevent rotation. In addition, the shaft support portion 114 is coupled to the coupling hole 112 formed at the other side of the hinge cylinder 100, and the other side of the shaft support 114 is inserted into the hinge hole 12 of the main body 10 so that the hinge cylinder ( 100 is rotatable.

On the other hand, the large liquid crystal screen 30 is provided on the surface where the cover 20 contacts the main body 10. However, when the cover 20 is closed with respect to the main body 10, the large LCD screen 30 of the cover 20 cannot be seen.

Therefore, when the large LCD screen 30 is to be viewed in a state where the mobile phone is turned off, the cover 20 is rotated from the main body 10 with the hinge cylinder 100 as an axis to be opened.

When the cover 20 starts to open, the hinge cylinder 100 rotates together. At this time, the third rotary slip portion 410 inserted into the second pivoting space portion 140 of the hinge cylinder 100 alternates with the third fixed slip portion 430 fixed to the main body 10 and is fixed to the third. The third ball 440 fixed to the sixth slip surface 434 of the slip part 430 is separated from the third hemispherical groove 416 formed in the fifth slip surface 412 of the third rotary slip part 410. To move along the third guide groove 418.

At this time, the third compression spring 400 is in the most compressed state.

Subsequently, when the cover 20 is opened to the call angle, the third ball 440 enters another third hemispherical groove 416 formed in the fifth slip surface 412. In addition, the third compression spring 400 is extended to the restoring force and supports the third rotary slip 410.

In this operation, the first guide shaft 453 is inserted into the fifth through hole 414 of the third rotary slip 410 to mutually connect the third rotary slip 410 and the third fixed slip 430. The center is firmly supported so that the action can be performed smoothly. In addition, the third guide protrusion 420 of the third rotary slip 420 is inserted into the third guide groove 144 of the hinge cylinder 100 to prevent rotational movement and to perform linear movement only.

Meanwhile, when the cover 20 is rotated in one direction while the cover 20 is open, the cylinder 210 fixed to the cover 20 rotates integrally.

Accordingly, the cylinder 210 and the first rotary slip part 240 rotate together with the cover 20 and are fixed to the rotation space part 110 of the hinge cylinder 100 coupled to the main body 10. The first fixed slip part 250 fixed to 260 does not rotate.

Accordingly, the first rotary slip part 240 is fixed to the first slip surface 246 of the first rotary slip part 240 while intersecting with the first fixed slip part 250 fixed to the hinge cylinder 100. The first ball 248 is separated from the first hemispherical groove 256 formed in the second slip surface 254 of the first fixed slip part 250 to move along the first guide groove 258.

At this time, the first compression spring 230 is in the most compressed state.

Subsequently, when the cover 20 is rotated 180 °, the first ball 248 again enters another first hemispherical groove 256 formed in the second slip surface 254. In addition, the first compression spring 230 is extended to the restoring force and supports the first rotary slip part 240.

In this operation, the first rotary shaft 260 is inserted into the first square hole 252 of the first fixed slip part 250 and the first through hole 242 of the first rotary slip part 240 to rotate the first. The slip portion 240 and the first fixed slip portion 250 may be firmly supported at the center so that the interaction between the slip portion 240 is performed smoothly. In addition, the first guide protrusion 244 of the first rotary slip part 240 is inserted into the first guide groove 222 of the cylinder 210 to prevent rotational movement and only linear movement.

And the projection of the cylinder 210 is caught by the corresponding projection of the hinge cylinder 100 to prevent excessive rotation of the cylinder (210).

In this state, when the user rotates the cover 20 and closes the main body 10, the large LCD screen 30 of the cover 20 is located on the upper surface, so that the user can turn the large LCD screen 30 even when the mobile phone is turned off. You will be able to see

When the user does not see the large LCD screen 30 of the cover 20, the reverse operation is performed in the reverse order to rotate the large LCD screen 30 of the cover 20 to face the main body 10. ).

Hereinafter, a third embodiment of the present invention will be described.

FIG. 9 is an exploded perspective view of the cover hinge device according to the third embodiment of the present invention, and FIG. 10 is a cross-sectional view of the cover hinge device shown in FIG.

The hinge cylinder 100 of the present embodiment has a rotation space portion 110 that is open upward, and a fourth guide groove 152 that is open upward and horizontally formed on one side thereof and faces the rotation space portion 110. It has a third rotating space 150 is formed with a second through hole 154 in the direction.

The rotation part includes a hollow 220 which is opened downward, a first shaft hole 214 is formed on an upper surface of the hollow 220, and a first guide groove 222 in a longitudinal direction on the inner surface of the hollow 220. A cylinder 210 formed with an arm 212 coupled to the cover 20 above; A first compression spring 230 inserted into the hollow 220; A second shaft hole 242 is formed at the center, and a first guide protrusion 244 slidably coupled to the first guide groove 222 is formed at the outer circumferential surface thereof, and a first slip surface 246 having a flat surface is formed below. A first rotary slip 240 having a pair of first balls 248 fixed to the first slip surface 246 at a position opposed to the second shaft hole 242; A first square hole 252 is formed at a center thereof, and a second slip surface 254 corresponding to the first slip surface 246 is formed, and a pair of first balls 248 are formed on the second slip surface 254. A first fixed slip portion 250 having a pair of first hemispherical grooves 256 formed at positions corresponding to the first hemisphere grooves 256 and a first guide groove 258 connecting each first hemispherical groove 256 in a circular shape; It is fixed upright in the rotation space 110, rotatably coupled to the first square hole 252, the second shaft hole 242, the first compression spring 230 and the first shaft hole 214, protruding end A first annular groove 264 formed in the first rotation shaft 260 having a first angular protrusion 262 coupled to the first angular hole 252; The first ring 270 is coupled to the first annular groove 264 above the first shaft hole 214.

Arm 212 formed on the top of the cylinder 210 is for coupling to the cover 20 with a screw.

In addition, a pair of protrusions (not shown) are formed on the outer circumferential surface of the cylinder 210, and a pair of corresponding protrusions (not shown) are disposed at 180 ° intervals in the rotation space 110 of the hinge cylinder 100. By forming the cylinder 210, the cylinder 210 can rotate 180 ° repeatedly about the rotation axis 260. Therefore, the wires connecting the signals of the main body 10 and the cover 20 are prevented from being twisted.

The first rotation shaft 260 is fixed to the rotation space 110 using a screw 266.

On the other hand, the clutch unit, the fourth compression spring 500 is inserted into the third rotation space 150; Inserted into the third rotation space portion 150 from the outside of the fourth compression spring 500, the sixth shaft hole 514 is formed in the center, the seventh slip surface 512 of the plane is formed on one surface At least seven fourth hemispherical grooves 516 are formed in the seventh slip surface 512 at the position opposite to the sixth shaft hole 514, and the fourth induction grooves connecting the fourth hemispherical grooves 516 in a circular shape ( 518 is formed, and a fourth rotary slip 510 having a fourth guide protrusion 520 slidably coupled to the fourth guide groove 152 on one side thereof; The second guide shaft 556 is inserted into the third rotation space 150 from the outside of the fourth rotary slip 510, the center is rotatably coupled to the sixth shaft hole 514 is formed, one side An eighth slip surface 534 corresponding to the seventh slip surface 512 is formed, and a pair of fourth balls 540 inserted into the fourth hemispherical groove 516 is fixed to the eighth slip surface 534. The other surface has a fourth fixed slip portion 530 formed with a fourth square protrusion 532 coupled to the second square hole 14 formed in the main body 10 through the second through hole 152. .

The general mobile phone is set so that the large LCD screen 30 is also turned off when the cover 20 is closed to the main body 10. In the mobile phone of the present embodiment, the cover 20 is inverted so that the large LCD screen 30 is turned outward. When closed to the main body 10 in the facing state, a sensor and a control function for turning on the large LCD screen 30 are required separately.

Hereinafter, the operation of the cover rotation apparatus of the mobile phone having the above configuration will be described.

3 is a perspective view of the mobile phone to which the cover hinge device is applied according to the present embodiment in a closed state, Figure 4 is a perspective view of the cover is open in Figure 3, Figure 5 is a perspective view of the cover is rotated in Figure 4, 6 is a perspective view of the cover in the closed state in FIG.

In a state where the cover hinge device is installed in the mobile phone, the cylinder 210 is fixed to the cover 20, and the first guide protrusion 244 of the first rotary slip part 240 is the first guide groove (of the cylinder 210). 222 is coupled to the cover 20, the cylinder 210 and the first rotary slip portion 240 is in a state of being integrally rotated.

The first rotation shaft 260 is fixed to the rotation space 110 of the hinge cylinder 100, and the first square hole 252 of the first fixed slip portion 250 is the first of the first rotation shaft 260. The rotation is prevented by being coupled to the square protrusion 262.

In addition, the first compression spring 230 grips the first rotary slip portion 240 in the outward direction so that the first slip surface 246 is elastic to the second slip surface 246 of the first fixed slip portion 250. Contact with.

On the other hand, the fourth square protrusion 532 of the fourth fixed slip portion 530 is coupled to the second square hole 14 of the main body 10 to prevent rotation. In addition, the shaft support portion 114 is coupled to the coupling hole 112 formed at the other side of the hinge cylinder 100, and the other side of the shaft support 114 is inserted into the hinge hole 12 of the main body 10 so that the hinge cylinder ( 100 is rotatable.

In addition, the fourth compression spring 500 holds the fourth rotary slip 510 outward so that the seventh slip surface 512 is elastic to the eighth slip surface 534 of the fourth fixed slip portion 530. Contact with.

In addition, the fourth square protrusion 532 of the fourth fixed slip portion 450 is coupled to the second square hole 14 of the main body 10 through the second shaft hole 154 of the hinge cylinder 100 to prevent rotation. do. In addition, the shaft support portion 114 is coupled to the coupling hole 112 formed at the other side of the hinge cylinder 100, and the other side of the shaft support 114 is inserted into the hinge hole 12 of the main body 10 so that the hinge cylinder ( 100 is rotatable.

On the other hand, the large liquid crystal screen 30 is provided on the surface where the cover 20 contacts the main body 10. However, when the cover 20 is closed with respect to the main body 10, the large LCD screen 30 of the cover 20 cannot be seen.

Therefore, when the large LCD screen 30 is to be viewed in a state where the mobile phone is turned off, the cover 20 is rotated from the main body 10 with the hinge cylinder 100 as an axis to be opened.

When the cover 20 starts to open, the hinge cylinder 100 rotates together. At this time, the fourth rotary slip portion 510 inserted into the third pivoting space portion 150 of the hinge cylinder 100 alternates with the fourth fixed slip portion 530 fixed to the main body 10 and is fixed to the fourth. The fourth ball 540 fixed to the eighth slip surface 534 of the slip part 530 is separated from the fourth hemispherical groove 516 formed in the seventh slip surface 512 of the fourth rotary slip part 510. To move along the fourth guide groove 518.

At this time, the fourth compression spring 500 is in the most compressed state.

Subsequently, when the cover 20 is opened to the call angle, the fourth ball 540 enters another fourth hemispherical groove 516 formed in the seventh slip surface 512. In addition, the fourth compression spring 500 is extended to the restoring force and supports the fourth rotary slip 510.

In this operation, the second guide shaft 536 is inserted into the sixth through hole 514 of the fourth rotary slip 510 to mutually connect the fourth rotary slip 510 and the fourth fixed slip 530. The center is firmly supported so that the action can be performed smoothly. In addition, the fourth guide protrusion 520 of the fourth rotary slip 520 is inserted into the fifth guide groove 154 of the hinge cylinder 100 to prevent rotational movement and only linear movement.

Meanwhile, when the cover 20 is rotated in one direction while the cover 20 is open, the cylinder 210 fixed to the cover 20 rotates integrally.

Accordingly, the cylinder 210 and the first rotary slip part 240 rotate together with the cover 20 and are fixed to the rotation space part 110 of the hinge cylinder 100 coupled to the main body 10. The first fixed slip part 250 fixed to 260 does not rotate.

Accordingly, the first rotary slip part 240 is fixed to the first slip surface 246 of the first rotary slip part 240 while intersecting with the first fixed slip part 250 fixed to the hinge cylinder 100. The first ball 248 is separated from the first hemispherical groove 256 formed in the second slip surface 254 of the first fixed slip part 250 to move along the first guide groove 258.

At this time, the first compression spring 230 is in the most compressed state.

Subsequently, when the cover 20 is rotated 180 °, the first ball 248 again enters another first hemispherical groove 256 formed in the second slip surface 254. In addition, the first compression spring 230 is extended to the restoring force and supports the first rotary slip part 240.

In this operation, the first rotary shaft 260 is inserted into the first square hole 252 of the first fixed slip part 250 and the first through hole 242 of the first rotary slip part 240 to rotate the first. The slip portion 240 and the first fixed slip portion 250 may be firmly supported at the center so that the interaction between the slip portion 240 is performed smoothly. In addition, the first guide protrusion 244 of the first rotary slip part 240 is inserted into the first guide groove 222 of the cylinder 210 to prevent rotational movement and only linear movement.

And the projection of the cylinder 210 is caught by the corresponding projection of the hinge cylinder 100 to prevent excessive rotation of the cylinder (210).

In this state, when the user rotates the cover 20 and closes the main body 10, the large LCD screen 30 of the cover 20 is located on the upper surface, so that the user can turn the large LCD screen 30 even when the mobile phone is turned off. You will be able to see

When the user does not see the large LCD screen 30 of the cover 20, the reverse operation is performed in the reverse order to rotate the large LCD screen 30 of the cover 20 to face the main body 10. ).

As described above, the present invention, the cover 20 is installed on the hinge cylinder 100 and the rotation space 110 formed in the hinge cylinder 100 to engage the hinge rotatable from the main body 10, the cover The rotation part 200 to enable the rotation of the 20 and the first pivot space 130 formed in the hinge cylinder 100 is inserted into the cover 20 is closed with respect to the main body 10 and A cover hinge device for a mobile phone including a clutch unit 300 for generating a stopping force in an open state. Since the cover 20 is rotated by the rotation unit 200, the large size of the cover 20 when the mobile phone is not used. By rotating the LCD screen 30 to the outside to view the large LCD screen 30 to facilitate the user convenience, and reducing the number of the LCD screen has the effect of reducing the manufacturing price of the mobile phone.

The present invention has been described above by way of specific embodiments, but the present invention is not limited to the above-described embodiments, and those skilled in the art without departing from the gist of the present invention claimed in the claims. Anyone can make a variety of variations.

Claims (3)

A hinge cylinder 100 having an upwardly open rotation space 110 and a first pivot space 130 formed laterally and having a horizontal second guide groove 134 formed therein; The hollow 220 is opened downward, the first shaft hole 214 is formed on the upper surface of the hollow 220, the longitudinal direction of the first guide groove 222 on the inner surface of the hollow 220 And a cylinder 210 having an arm 212 coupled to the cover 20, a first compression spring 230 inserted into the hollow 220, and a second shaft hole 242 at the center thereof. Is formed, a first guide protrusion 244 slidably coupled to the first guide groove 222 is formed on an outer circumferential surface thereof, and a first slip surface 246 having a flat surface is formed below the first slip. On the surface 246, a first rotary slip portion 240 in which a pair of first balls 248 are fixed at a position opposed to the second shaft hole 242, and a first square hole 252 at the center thereof. Is formed, and a second slip surface 254 corresponding to the first slip surface 246 is formed, and the second slip surface 254 is formed at a position corresponding to the pair of first balls 248. A pair of first hemispheres A first fixed slip portion 250 and a first induction groove 258 having a first guide groove 258 connecting each of the first hemispherical grooves 256 in a circular shape are fixed to the rotation space portion 110. And rotatably coupled to the first square hole 252, the second shaft hole 242, the first compression spring 230, and the first shaft hole 214, and protrude from a first annular groove ( 264 is formed, the first rotating shaft 260 having the first corner protrusion 262 coupled to the first corner hole 252, and the first annular groove (214) above the first shaft hole (214). A rotation unit having a first ring 270 coupled to 264; The second compression spring 310 is inserted into the first rotation space portion 130, and is inserted into the first rotation space portion 130 from the outside of the second compression spring 310, the third shaft hole in the center 322 is formed, and a planar third slip surface 324 is formed on one surface thereof, and the third slip surface 324 has two or more second hemispherical shapes at positions opposed to the third shaft hole 322. Grooves 326 are formed, and second guide grooves 328 connecting the second hemispherical grooves 326 in a circle are formed, and second guide protrusions slidably coupled to the second guide grooves 134. The second rotary slip part 320 and the third rotary slip part 320 formed therein are inserted into the first rotation space part 130 from the outside of the second rotary slip part 320 and in the center of the third shaft hole 322. A corresponding fourth shaft hole 332 is formed, and a fourth slip surface 334 corresponding to the third slip surface 324 is formed on one surface thereof, and the second hemispherical groove is formed on the fourth slip surface 334. A pair of second balls 338 inserted into the 326 is fixed, and the other surface of the second fixed to the second octagonal protrusion 336 is coupled to the second square hole 14 formed in the body 10 Rotatably coupled to the slip portion 330, the fourth shaft hole 332, the third shaft hole 322, and the second compression spring 310, and a second annular groove 342 is formed at a tip end thereof. , A second rotary shaft 340 having a locking end 344 caught by the square protrusion 336 at a rear end thereof, and a second ring coupled to the second annular groove 342 at the rotation space 110 side ( Cover hinge device of a mobile phone comprising a; A rotation space portion 110 which is opened upward, and a third guide groove 144 that is opened upward and is bent in a horizontal direction from below in a vertical direction, is formed on both sides and is opposed to the rotation space portion 110. A hinge cylinder 100 having a second pivotal space portion 140 in which a first through hole 142 is formed; The hollow 220 is opened downward, the first shaft hole 214 is formed on the upper surface of the hollow 220, the longitudinal direction of the first guide groove 222 on the inner surface of the hollow 220 And a cylinder 210 having an arm 212 coupled to the cover 20, a first compression spring 230 inserted into the hollow 220, and a second shaft hole 242 at the center thereof. Is formed, a first guide protrusion 244 slidably coupled to the first guide groove 222 is formed on an outer circumferential surface thereof, and a first slip surface 246 having a flat surface is formed below the first slip. On the surface 246, a first rotary slip portion 240 in which a pair of first balls 248 are fixed at a position opposed to the second shaft hole 242, and a first square hole 252 at the center thereof. Is formed, and a second slip surface 254 corresponding to the first slip surface 246 is formed, and the second slip surface 254 is formed at a position corresponding to the pair of first balls 248. A pair of first hemispheres A first fixed slip portion 250 and a first induction groove 258 having a first guide groove 258 connecting each of the first hemispherical grooves 256 in a circular shape are fixed to the rotation space portion 110. And rotatably coupled to the first square hole 252, the second shaft hole 242, the first compression spring 230, and the first shaft hole 214, and protrude from a first annular groove ( 264 is formed, the first rotating shaft 260 having the first corner protrusion 262 coupled to the first corner hole 252, and the first annular groove (214) above the first shaft hole (214). A rotation unit having a first ear ring 270 coupled to 264; A third compression spring 400 inserted into the second pivot space 140, and a fifth shaft hole inserted into the second pivot space 140 from the outside of the third compression spring 400. 414 is formed, and a planar fifth slip surface 412 is formed on one surface, and the fifth slip surface 412 has two or more third hemispherical shapes at positions opposite to the fifth shaft hole 414. A groove 416 is formed, and a third guide groove 418 connecting each of the third hemispherical grooves 416 in a circle is formed, and third sides slidably coupled to the third guide grooves 144 on both sides. The third rotary slip portion 410 having the guide protrusion 420 and the third rotary slip portion 410 are inserted into the second rotation space portion 140 from the outside of the third rotary slip portion 410, and the fifth shaft hole 414 is formed at the center thereof. The first guide shaft (436) rotatably coupled to the (6) is formed, the sixth slip surface 434 corresponding to the fifth slip surface 412 is formed on one surface, the fifth slip surface (4) The pair of third balls 440 inserted into the third hemispherical groove 416 is fixed to the second hemisphere groove 416, and the second square hole formed on the main body 10 through the first through hole 142 on the other surface thereof. Cover clutch device of the mobile phone, characterized in that it comprises a; clutch portion having a third fixed slip portion 430 is formed with a third square protrusion 432 coupled to (14). The rotation space part 110 which is open upward, and the 4th guide groove 152 of the horizontal direction which is opened upward and is formed in one side, and the 2nd through-hole 154 in the direction which opposes the said rotation space part 110 are formed. Hinge cylinder 100 having a third rotating space portion 150 is formed; The hollow 220 is opened downward, the first shaft hole 214 is formed on the upper surface of the hollow 220, the longitudinal direction of the first guide groove 222 on the inner surface of the hollow 220 And a cylinder 210 having an arm 212 coupled to the cover 20, a first compression spring 230 inserted into the hollow 220, and a second shaft hole 242 at the center thereof. Is formed, a first guide protrusion 244 slidably coupled to the first guide groove 222 is formed on an outer circumferential surface thereof, and a first slip surface 246 having a flat surface is formed below the first slip. On the surface 246, a first rotary slip portion 240 in which a pair of first balls 248 are fixed at a position opposed to the second shaft hole 242, and a first square hole 252 at the center thereof. Is formed, and a second slip surface 254 corresponding to the first slip surface 246 is formed, and the second slip surface 254 is formed at a position corresponding to the pair of first balls 248. A pair of first hemispheres A first fixed slip portion 250 and a first induction groove 258 having a first guide groove 258 connecting each of the first hemispherical grooves 256 in a circular shape are fixed to the rotation space portion 110. And rotatably coupled to the first square hole 252, the second shaft hole 242, the first compression spring 230, and the first shaft hole 214, and protrude from a first annular groove ( 264 is formed, the first rotating shaft 260 having the first corner protrusion 262 coupled to the first corner hole 252, and the first annular groove (214) above the first shaft hole (214). A rotation unit having a first ear ring 270 coupled to 264; The fourth compression spring 500 is inserted into the third pivot space 150 and the fourth pivot spring 150 is inserted into the third pivot space 150 from the outside of the fourth compression spring 500. 514 is formed, and a planar seventh slip surface 512 is formed on one surface, and the seventh slip surface 512 has two or more fourth hemispherical shapes at positions opposite to the sixth shaft hole 514. A groove 516 is formed, and a fourth guide groove 518 connecting each of the fourth hemispherical grooves 516 in a circular shape is formed, and a first side slidably coupled to the fourth guide groove 152. The fourth rotary slip portion 510 having the four guide protrusions 520 and the third rotary space portion 150 are inserted from the outside of the fourth rotary slip portion 510, and the sixth shaft hole ( A second guide shaft 556 rotatably coupled to the 514 is formed, and an eighth slip surface 534 corresponding to the seventh slip surface 512 is formed on one surface thereof, and an eighth slip surface 53. 4) a pair of fourth balls 540 inserted into the fourth hemispherical groove 516 is fixed, and a second square hole formed in the main body 10 through the second through hole 152 on the other surface thereof. Cover hinge device of a mobile phone, characterized in that it comprises a; clutch portion having a fourth fixed slip portion (530) formed with a fourth square protrusion (532) coupled to (14).