KR100470355B1 - Cover hinge mechanism of cellular phone - Google Patents

Abstract

The present invention is to miniaturize the size of the cover hinge device of the mobile phone. The present invention for this purpose, the housing 300 is fixed to the cover 410, and the first waveform surface 328 is rotatably inserted into the housing 300 is fixed to the main body 400 side having a wave shape The formed rotary slip part 320 and the second waveform surface 336 which are rotatably inserted in the housing 300 and correspond to the first waveform surface 328 are formed to elastically contact the rotating slip part 320. A cover hinge device of a mobile phone having a fixed slip portion 330 and a first spring 340 and a second spring 342 which hold the fixed slip portion 330 in the housing 300, and two compression springs. Since the elastic force is doubled by using, by using a compression spring having a short length, it is possible to reduce the size of the housing 300 and to miniaturize it.

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 to provide a space for adding other functions by miniaturizing the size of the portion related to the hinge rotation of the cover.

As an example of a hinge device of a mobile phone, a 'hinging device of a mobile phone' disclosed in Patent Application No. 10-1998-0046799 will be described.

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

As shown in FIG. 2, the hinge device 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) 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 so as to rotate together with the opening and closing of the cover 70, and the first hinge shaft 2 In accordance with the rotational movement of the cam (3) is a linear reciprocating movement by sliding movement with the mountain-shaped portion 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 cover 70.

The hinge means 10 consists of a second hinge shaft 6 and a plate spring 7 supporting the second hinge shaft 6.

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 with an elastic force.

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 cover 70 on one side thereof and has a mount 22 on the other side thereof. At this time, a disk-shaped locking 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 flat shaft 23 and the curved surface 24 are alternately formed at the ends of the coupling shaft 21 to be assembled to the coupling portion 74 of the cover 70 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 guide protrusion 34 makes linear movement of the guide hole 13. In addition, the cam 3 is provided with a fixing protrusion 33 so that one end of the spring 4 is fixed.

And the stopper 5 is provided with hooks 51 so as to lock in the locking hole 15, the hook 51 extends 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 cover 70 is opened and closed. At this time, the mountain 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 tensions the spring 4 while moving back and forth. Let's do it.

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

That is, in the closed or open state of the cover 70, the spring 4 maintains the most tensioned state, and when the cover 70 is opened about 90 degrees, the spring 4 maintains the most compressed state.

In this way, the cover 70 can maintain the open and closed states with appropriate elasticity, respectively, by the action of the hinge module (M).

However, since the spring 4 of such a hinge device has a sufficient elastic force to be secured to a certain length, the length of the housing 1 increases along the length of the spring 4, which makes it difficult to miniaturize it.

The present invention has been made to solve the above problems, an object of the present invention is to provide a space to add other functions by miniaturizing the size of the portion related to the hinge rotation of the cover.

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.

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

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

Figure 6 is a cross-sectional view of the coupling hinge of the cover hinge device shown in FIG.

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

<Explanation of symbols for main parts of drawing>

300: housing 302: interior space

304: through hole 306: first tube

308: sliding groove 320: rotary slip portion

322: coupling shaft 324: coupling shaft

326: first cylindrical portion 328: first waveform surface

330: fixed slip portion 332: coupling hole

334: second cylindrical portion 336: second waveform surface

338: sliding protrusion 339: second tube

340: first spring 342: second spring

400: main body 402: first support portion

404: fixing hole 406: second support portion

408: rotating ball 410: cover

412: holder portion 414: insertion hole

416: axis of rotation

The present invention for achieving the above object, the holder portion fixed to the cover; A housing fixed to the holder; A rotary slip portion rotatably inserted into the housing; A fixed slip portion rotatably inserted into the housing to elastically contact the rotating slip portion; First and second springs holding the fixed slip part in the housing; A first support part formed on the main body to fix the rotary slip part; And a second support part formed on the main body to rotatably support one side of the holder part.

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

4 is an exploded perspective view of the cover hinge device according to the present embodiment of the present invention, FIG. 5 is an exploded perspective view of main parts of the cover hinge device shown in FIG. 4, and FIG. 6 is a coupled state of the cover hinge device shown in FIG. 4. It is a cross section.

As shown in this figure, the present embodiment includes a holder portion 412 fixed to the cover 410, a housing 300 fixed to the holder portion 412, and rotatably inserted into the housing 300. The rotating slip part 320, the fixed slip part 330 rotatably inserted into the housing 300 to elastically contact the rotating slip part 320, and the fixed slip part 330 in the housing 300. A first spring 340 and a second spring 342 for supporting the first body, a first support part 402 formed on the main body 400 to fix the rotary slip part 320, and a main body 400 formed on the holder. The second support part 406 rotatably supports one side of the part 412.

The holder 412 has an insertion hole 414 in which the housing 300 is inserted and fixed in one direction is opened, and the rotating shaft 416 protrudes in the other direction.

The housing 300 has an inner space 302 having one side open, a through hole 304 formed at one end thereof, and a first tube 306 formed at the inner side of the other end thereof.

In addition, the rotating slip part 320 is provided with a coupling shaft 322 passing through the through hole 304, and a coupling shaft 324 is formed at the center of the side opposite to the coupling shaft 322. The first cylindrical portion 326 is formed on the outer periphery of the shaft 324, the upper surface of the first cylindrical portion 326 is made of a continuous surface horizontally toward the coupling shaft 324 and two wavelengths in one rotation The first waveform surface 328 having a wave shape of the bent has a shape that is rotatably coupled to the interior space (302).

And the fixed slip portion 330, the coupling hole 332 is rotatably coupled to the coupling shaft 324 is formed in the center, the second cylindrical portion 334 is formed on the outer periphery of the coupling hole 332, 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 the first tube 306 is disposed on the surface opposite to the second cylindrical portion 334. A second tube 339 having the same shape as) is formed, and has a shape rotatably coupled to the inner space 302.

When the coupling shaft 324 is inserted into the coupling hole 332 and the first waveform surface 328 and the second waveform surface 336 rotate in contact with each other, the rotary slip portion 320 and the fixed slip portion 330 are Prevents deviation from each other and allows only forward and backward movement.

In addition, a sliding protrusion 338 is formed on a side of the fixed slip portion 330, and the moving direction of the fixed slip portion 330 is slidably inserted into the inner space 302 of the housing 300. A sliding groove 308 is formed along the fixed slip portion 330 to be rotatably fixed while allowing straight movement.

Meanwhile, both ends of the first compression spring 340 are fitted to the inner surfaces of the first tube 306 and the second tube 339, and the second compression spring 342 has both ends of the first tube 306 and the first compression spring 340. It is fitted to the outer surface of the two tubes (339). Therefore, the first compression spring 340 is fixed to the inside of the second compression spring 342, and the fixed slip portion 330 is supported by the sum of the two elastic forces.

As such, since the two compression springs are used in the present embodiment, the elastic force is doubled, and thus the compression springs having a short length can be used. Therefore, the housing 300 can be reduced in size and downsized.

The first support part 402 is formed with a fixing hole 404 to which the coupling shaft 322 is fixedly coupled, and the second support part 406 has a rotation hole 408 to which the rotation shaft 416 is rotatably coupled. Is formed.

Hereinafter, the operation of the cover hinge device of the mobile phone having the above configuration will be described.

The coupling hole 332 of the fixed slip 330 is rotatably coupled to the coupling shaft 324 of the rotary slip 320 in a state where the cover hinge device is assembled, and the first of the rotary slip 320 The waveform surface 328 and the second waveform surface 336 of the fixed slip portion 330 are brought into close contact with each other so as to be rotationally sliding.

The first compression spring 340 and the second compression spring 342 support the fixed slip 330 by the sum of the elastic forces of the two.

The coupling shaft 322 of the rotary slip part 320 passes through the through hole 304 of the housing 300 and is fixed to the fixing hole 404 of the first support part 402. 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 portion inserted into the inner space of the housing 300 rotates together with the housing 300, and the coupling shaft fixedly inserted into the fixing groove 404 of the first support portion 402 formed in the main body 400 ( The rotating slip part 320 having the 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 to move the first compression spring 340 and the first. The two compression springs 342 are 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 first compression spring 340 and the second compression spring ( 342 is extended to the restoring force and supports the fixed slip portion 330.

In this operation, the coupling hole 332 of the fixed slip part 330 is inserted into the coupling shaft 324 of the rotary slip part 320 so that the interaction between the fixed slip part 330 and the rotary slip part 320 is smooth. The center is firmly supported to make it happen. And the fixed slip portion is a sliding projection 338 is inserted into the sliding groove 308 to prevent the rotational movement is only linear movement by the elasticity of the first spring 340 and the second spring 342.

On the contrary, when the cover 410 is closed in the open state, the peak of the first waveform surface 328 slides and slides toward the peak of the second waveform surface 336 to move the first spring 340 and the second spring 342. Is 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 first spring 340 and the second spring 342 are restoring force. It is extended to the fixed slip portion 330 is supported.

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.

In the present exemplary embodiment, the holder part 412 into which the housing 300 is inserted is fixed to the cover 410 side, and the first support part 402 and the second support part 406 supporting the holder part 412 include a main body ( Although the example formed on the 400 side has been described, the holder part 412 is fixed to the main body 400 side and the first support part 402 and the second support part 406 are fixed to the cover 410 side. Since the invention can achieve the same objects and effects as intended, it will also be within the scope of the invention.

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

7 is a perspective view of main parts of the cover hinge device according to the second embodiment.

In the rotary slip part 320 of the second embodiment, the coupling shaft 112 is formed to pass through the through hole 304, and the coupling shaft 124 is formed at the center of the side opposite to the coupling shaft 112. A circular first guide groove 120 connecting a pair of first spherical grooves 122 and a pair of first spherical grooves 122 is formed on the outer circumference of the coupling shaft 124 to rotate in the inner space 102. Possibly inserted.

In addition, the fixed slip portion 330 has a coupling hole 146 to which the coupling shaft 124 is rotatably coupled at the center thereof, and has a first spherical groove 122 and a first induction at an outer circumference of the coupling hole 146. The second spherical groove 152 and the second guide groove 150 corresponding to the groove 120 are respectively formed to be rotatably inserted into the inner space 102.

In addition, a pair of balls 130 having both sides inserted into the pair of first spherical grooves 122 and the pair of second spherical grooves 152 are provided.

The rest of the configuration is the same as in the first embodiment.

The operation of the second embodiment will be described below.

When the cover is opened or closed from the main body, the pair of balls 130 rotates together with the first slip part 110 to be separated from the second spherical groove 152 of the second slip part 140 and the second induction groove ( 150 is moved to the second spherical groove 152 different from each other.

When the cover is moved to an open position or a closed position, the pair of balls 130 enters the second second spherical groove 152 and emits a light impact sound that 'clicks'. Since the ball 130 is not separated from the second spherical groove 152 within a predetermined torque or less, it maintains the open state of the cover 210.

On the other hand, when the cover is stopped in a state in which only a predetermined angle is opened without opening the ball, the ball 130 is stopped by the friction force while being inserted into the first guide groove 120 or the second guide groove 150, so that the cover 210 maintains only a certain angle open state. That is, according to this embodiment, the user can open the cover only to a desired angle.

As described above, the present invention includes a housing 300 fixed to the cover 410 and a first waveform surface 328 rotatably inserted into the housing 300 and fixed to the main body 400 side and having a wave shape. ) Is formed and the second slip surface 336 that is rotatably inserted in the housing 300 and corresponding to the first waveform surface 328 is formed in the housing 300 to be elastic with the rotary slip portion 320. A cover hinge device of a mobile phone having a fixed slip portion 330 in contact with a wall and a first spring 340 and a second spring 342 gripping the fixed slip portion 330 in the housing 300. Since the elastic force is doubled by using the compression spring, it is possible to reduce the size of the housing 300 and to reduce the size by using the short compression spring.

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 to which the present invention pertains without departing from the gist of the present invention. Anyone who grows up will be able to make various variations.

Claims (5)

A holder portion 412 fixed to the cover 410; A housing 300 fixed to the holder part 412; A rotary slip part 320 rotatably inserted into the housing 300; A fixed slip part 330 rotatably inserted into the housing 300 to elastically contact the rotary slip part 320; A first spring 340 and a second spring 342 holding the fixed slip 330 in the housing 300; A first support part 402 formed on the main body 400 to fix the rotary slip part 320; And And a second support part (406) formed on the main body (400) to rotatably support one side of the holder part (412). The method of claim 1, wherein the housing 300, the inner space 302 is open at one side is formed, the through hole 304 is formed at one end, the first tube 306 protruding on the inner side of the other end ) Is formed and inserted into the insertion hole (414); The rotary slip portion 320, the coupling shaft 322 is passed through the through hole 304 is formed, the coupling shaft 324 is formed in the center of the side opposite to the coupling shaft 322 is formed A first cylindrical portion 326 is formed on an outer circumference of the coupling shaft 324, and is formed of a continuous surface horizontally directed toward the coupling shaft 324 on an upper end surface of the first cylindrical portion 326. A first waveform surface 328 having a waveform curve of two wavelengths in one rotation is formed and rotatably coupled to the internal space 302; The fixed slip portion 330, the coupling hole 332 is rotatably coupled to the coupling shaft 324 is formed in the center, the second cylindrical portion 334 is formed on the outer periphery of the coupling hole 332 And a second waveform surface 336 corresponding to the first waveform surface 328 is formed along an upper end surface of the second cylindrical portion 334, and is opposite to the second cylindrical portion 334. A second tube 339 having the same shape as the first tube 306 is formed and has a shape rotatably coupled to the inner space 302; The first compression spring 340 may include a first compression spring 340 having both ends inserted into and coupled to inner surfaces of the first tube 306 and the second tube 339; And The second compression spring (342), the cover hinge device of the mobile phone, characterized in that both ends are fitted to the outer surface of the first tube (306) and the second tube (339). The method according to claim 1, 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 housing 300, the inner space 302 is open at one side is formed, the through hole 304 is formed at one end, the first tube 306 protruding on the inner side of the other end ) Is formed and inserted into the insertion hole (414); The rotary slip portion 320, the coupling shaft 112 is passed through the through hole 304 is formed, the coupling shaft 124 is formed at the center of the side opposite to the coupling shaft 112 is formed The circular first guide groove 120 connecting the pair of first spherical grooves 122 and the pair of first spherical grooves 122 is formed on the outer circumference of the coupling shaft 124 to form the inner space 102. Rotatably inserted within; The fixed slip portion 330 has a coupling hole 146 in which the coupling shaft 124 is rotatably coupled to the center, and the first spherical groove 122 and the outer circumference of the coupling hole 146. A second spherical groove 152 and a second guide groove 150 corresponding to the first guide groove 120 are formed to be rotatably inserted into the inner space 102; A pair of balls 130 having both sides inserted into the pair of first spherical grooves 122 and the pair of second spherical grooves 152 are provided; Both ends of the first compression spring 340 are fitted to the inner surfaces of the first tube 306 and the second tube 339; The second compression spring (342), the cover hinge device of the mobile phone, characterized in that both ends are fitted to the outer surface of the first tube (306) and the second tube (339). The method according to claim 4, 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.