CN214504835U

CN214504835U - Mobile device

Info

Publication number: CN214504835U
Application number: CN202120063138.1U
Authority: CN
Inventors: 朴淳瓘
Original assignee: S Link Co ltd
Current assignee: S Link Co ltd
Priority date: 2020-01-13
Filing date: 2021-01-11
Publication date: 2021-10-26
Anticipated expiration: 2031-01-11
Also published as: KR20210090926A; KR102322915B1

Abstract

The utility model discloses a mobile device includes: a body portion; a first moving part linearly moving in a closed state or an open state at a front surface of the body part; a third moving part linearly moving on a rear surface of the body part; a flexible display which has flexibility capable of bending and deforming and includes a first surface on one side and a third surface on the other side, the first surface being fixed to the first moving portion in close contact therewith, the third surface being fixed to the third moving portion in close contact therewith, and a second surface between the first surface and the third surface surrounding a side surface of the main body portion; and a second moving portion disposed between the first moving portion and the third moving portion, and supporting the flexible display to the second surface in a curved state.

Description

Mobile device

Technical Field

The utility model relates to an install flexible display's reelable mobile device.

Background

Recently, for a large screen display, a foldable mobile device mounted with a flexible display is being developed. As the kind of the foldable mobile device, there may be a fold-in manner and a fold-out manner.

The fold-in method is recently developed by samsung electronics, and is a method of mounting a flexible display on the inner sides of a first body part and a second body part and folding the flexible display with a small radius of curvature as in the case of folding paper with a folding line as a reference. A common problem with the fold-in approach is that the radius of curvature of the folded portion of the display is small when folded, and thus the folded portion is severely wrinkled.

On the other hand, the folding-out method is shown by samsung electronics, chinese huashi, and rouyu, and is a method in which the first body portion and the second body portion are folded and the flexible display is bent at a large curvature radius on the outside. In the fold-out manner, the flexible display and the first and second body portions are parallel to each other when unfolded, and thus have the same length. However, the folding line of the flexible display is located outside the center of rotation of the first body part and the center of rotation of the second body part. Therefore, in the fold-out manner, when the first and second body portions are folded, the entire length of the flexible display located outside of the body portions may be insufficient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the inward folding or outward folding mode and adopts a structure that the moving part slides relative to the body part. The flexible display coupled to the moving part may change in length or width in a rollable manner.

The above-mentioned utility model can be realized through following technical scheme.

The utility model provides a mobile device, include: a body portion; a first moving part linearly moving in a closed state or an open state at a front surface of the body part; a third moving part linearly moving on a rear surface of the body part; a flexible display which has flexibility capable of bending and deforming and includes a first surface on one side and a third surface on the other side, the first surface being fixed to the first moving portion in close contact therewith, the third surface being fixed to the third moving portion in close contact therewith, and a second surface between the first surface and the third surface surrounding a side surface of the main body portion; and a second moving portion disposed between the first moving portion and the third moving portion, and supporting the second surface of the flexible display in a curved state.

Wherein an area of the flexible display exposed to the front surface of the main body portion is smallest in the closed state and largest in the open state, and the first moving portion and the third moving portion move in opposite directions.

The moving device is provided with a hinge spring having one side fixed to the body portion and the other side fixed to the first moving portion or the third moving portion, the hinge spring elastically biasing the first moving portion or the third moving portion in the closed state or the open state with respect to the body portion.

The mobile device includes: an adjusting part that adjusts a relative position of the third moving part with respect to the first moving part or a tension of the flexible display.

The mobile device is provided with: a first belt extending from the first moving portion toward the third moving portion; and a first tape fixing portion that fixes one side of the first tape to the first moving portion, the moving device being capable of adjusting a fixing position at which the other side of the first tape is fixed to the third moving portion.

Wherein one side of a first belt is fixed to the first moving part, and the other side of the first belt is connected to the third moving part, and the moving device includes: a pinion gear rotatably provided on the other side of the first belt; a rack formed in the third moving portion so as to mesh with the pinion; and a restraint mechanism that restrains rotation of the pinion gear.

The moving device includes at least one of a first belt connecting the first moving unit and the third moving unit and a second belt facing the second moving unit.

Wherein the first band or the second band is a plate spring elastically spreading in a direction of reducing bending deformation.

Wherein the main body includes a first side surface portion that protrudes from the first moving portion and a second side surface portion that bends and moves the second moving portion, the first band surrounds the first side surface portion, and the second band surrounds the second side surface portion.

Wherein the main body includes a first side surface portion that protrudes from the first moving portion and a second side surface portion that bends and moves the second moving portion, the first belt pulls the third moving portion toward the first moving portion with the first side surface portion as a supporting point, and the second belt applies an elastic force that pushes the second moving portion out of the second side surface portion.

Wherein the second moving portion includes a plurality of chain blocks, and a belt hole through which the second belt passes is formed in the chain block.

The mobile device includes: and a rail unit in which a linear rail and a curved rail are formed to be inserted into the first moving part, the second moving part, and the third moving part, and at least one of the first moving part, the second moving part, and the third moving part is elastically attached to the linear rail or the curved rail.

The utility model has the following effects.

According to the utility model discloses, owing to do not have the folding part, therefore have the fold that flexible display can not appear, can show the closed condition of flexible display or the advantage of open mode naturally for the body part.

Drawings

Fig. 1 is an external view showing a closed state of the mobile device in a state where the side cover is removed according to the present invention.

Fig. 2 is an external view showing an open state of the mobile device in a state where the side cover is attached.

Fig. 3 is a plan perspective view showing the hinge spring in a closed state of the present invention.

Fig. 4 is a plan perspective view showing the hinge spring in an open state of the present invention.

Fig. 5 is a side view of the mobile device showing the closed state of the present invention.

Fig. 6 is a side view showing the mobile device in an open state of the present invention.

Fig. 7 is a side view of the rail unit of the present invention.

Fig. 8 is a side view showing the first moving unit, the second moving unit, the third moving unit, the first belt, and the second belt of the present invention.

Fig. 9 is an exploded perspective view showing the body portion of the present invention and the structure of fig. 8 at the same time.

Reference numerals

102: side cover, 106: hinge spring, 110: first moving portion, 120: second moving portion, 122: chain block, 123: hole, 130: third moving part, 200: rail unit, 210: first guide rail, 211: first rail opening, 220: second guide rail, 230: third guide rail, 231: third rail opening, 300: flexible display, 301: first side, 302: second side, 303: third face, 410: first belt, 411: first tape fixing section, 412: gear block, 413: groove, 414: threaded hole, 416: other side of the first belt, 417: pinion, 418: rack, 420: second tape, 500: body portion, 501: front surface of body portion, 502: rear surface of body portion, 510: first side surface portion, 520: second side surface portion, 530: and a bearing.

Detailed Description

The mobile device of the present invention will be described with reference to fig. 1 and 9.

The mobile device of the present invention may include a body part 500, a flexible display 300, and a moving

part

110, 120, 130. The main body 500 may be provided with a housing that forms the exterior and in which most of the components including a main board of the mobile device, a battery, and the like are disposed.

Referring to fig. 1, there is shown a closed state in which the flexible display 300 is exposed by an amount of less than or equal to the length or width of the body part 500. In the case of a mobile device, exposure of a screen in a closed state as shown in fig. 1 is minimized, and the overall size is minimized, enabling improved portability. For convenience of carrying, the flexible display 300 may be in a closed state where a part thereof is accommodated in the main body 500 at ordinary times. In fig. 1, the side cover 102 is removed so that the main portion can be visually seen. The side cover 102 may cover the rail unit 200 to prevent inflow of foreign substances, block access from the outside to the inside of the body part 500, and may exert a waterproof or antifouling function.

Referring to fig. 2, the open state is shown. When the first moving part 110 is pulled toward the lateral direction of the body part 500 by a user in the closed state, or the flexible display 300 is pushed toward the lateral direction of the body part 500, it may become the open state when the first moving part 110 is linearly moved.

Referring to fig. 2, the flexible display 300 may be unfolded from the body part 500, the flexible display 300 becomes an unfolded state that is unfolded longer than the length or width of the body part 500, and a large screen may be implemented. In the open state, an exposed area of the flexible display 300 may be maximized, and the flexible display 300 received inside the body part 500 may be minimized.

Since the flexible display 300 is easily bent, a mechanism for supporting the flexible display 300 in a flat state is required in order to form a screen. The first moving part 110 may support at least a portion of the flexible display 300. On the other hand, in order to implement an edge screen, the end of the first moving part 110 may be a curved surface. The first moving part 110 may partially support the flexible display 300 in a curved state as an example of an edge portion, or support a wider area supporting the flexible display 300 in a planar state. The first moving part 110 may support the flexible display 300 not to be bent by an external force.

When the flexible display 300 is unfolded from the closed state of fig. 1 to the open state of fig. 2, a large screen can be implemented even if the size of the body part 500 is small. Compare with interior book or the mode of rolling over in the past, through the utility model discloses a slip mode can curl the mode, can avoid the screen fold to appear from the root when realizing the large screen to the rotation center of this body part 500 disappears, therefore can avoid the not enough problem of length of flexible display 300 in the folding mode.

The first moving part 110 can linearly move on the front surface 501 of the body part 500. The rail unit 200 may be provided to the body part 500 and guide the linear movement of the first moving part 110. The rail unit 200 may movably support both end portions of at least one of the first, second, and third moving

parts

110, 120, and 130. The rail unit 200 may be provided at a side surface of the body part 500 for the movement accuracy of the moving

parts

110, 120, 130. Thereby, a play of the flexible display 300 that is extended and retracted can be removed.

The total area of the flexible display 300 is preferably equal to or more than the area of the front surface 501 of the main body 500 where the flexible display 300 is exposed in the open state. In the closed state, the remaining portion of the flexible display 300 may be accommodated inside the body part 500 in a rollable state or a sliding state. When the flexible display 300 is rollably or slidably accommodated in the main body part 500, the folding of the flexible display 300 can be prevented from being broken, compared to the conventional folding method in which the flexible display 300 is folded.

On the other hand, since the first moving portion 110 is a flat plate having no flexibility, the flexible display 300 cannot be supported by being able to be bent and deformed. In order to support the bent portion of the flexible display 300, a second moving part 120 that moves curvilinearly may be provided.

The second moving part 120 may be moved curvilinearly from the front surface 501 toward the rear surface 502 of the body part 500 or moved curvilinearly from the rear surface 502 toward the front surface 501 of the body part 500. An end of the second moving part 120 may face an end of the first moving part 110. When a gap occurs between the first moving part 110 and the second moving part 120, the support state of the flexible display 300 may be cut off or tilted. In order to prevent this, it is preferable that the first moving part 110 and the second moving part 120 are closely contacted without a step.

Since the structure becomes complicated if a separate member is provided to guide the curved movement of the second moving portion 120, it is preferable to use the rail unit 200 as a common guide mechanism. The rail unit 200 may guide not only the linear movement of the first moving part 110 but also the curved movement of the second moving part 120. A portion of the flexible display 300 supported by the first moving part 110 may linearly move in a planar state with respect to the body part 500 without bending deformation. Since the remaining portion of the flexible display 300 supported by the second moving part 120 is bent and deformed, it may be wound around the side surface of the main body part 500 in a curved state. This portion may be supported by the second moving portion 120 so as to be able to be bent.

On the other hand, a mechanism for supporting the opposite side planes of the flexible display 300 without bending deformation is required. When the margin portion of the flexible display 300 is large or the expansion and contraction amount of the first moving part 110 is large, a supporting mechanism of the opposite side plane may be further required. For this, the third moving part 130 supporting the flexible display 300 on the rear surface 502 of the body part 500 may be provided.

The third moving part 130 may linearly move at the rear surface 502 of the body part 500. The second moving part 120 may be connected to the first moving part 110 and the third moving part 130 to perform a curved movement.

The rail unit 200, which is a common guide mechanism for slimness and simplification of the structure of the body part 500, may guide linear movement of the first and third moving

parts

110 and 130 on the one hand, and curved movement of the second moving part 120 on the other hand. A portion of the flexible display 300 supported by the first and third moving

parts

110 and 130 is in a state of no bending deformation and can move linearly with respect to the body part 500. The remaining portion of the flexible display 300 supported by the second moving part 120 is bent and deformed, and may be wound around the side surface of the main body part 500 in a curved state.

The moving

parts

110, 120, and 130 of the present invention may be moved by a motor or a driver, but may be semi-automatically operated for low power, slimness, and shielding of failure factors. By purely manual means, the flexible display 300 may easily shake because there is no mechanism to maintain the closed state or the open state.

The hinge spring 106 may be connected to the body part 500 and the first moving part 110 for a semi-automatic operation. The hinge spring 106 may apply an elastic force to the moving

parts

110, 120, 130 with respect to the body part 500. The position where the hinge spring 106 is disposed is not limited to the first moving part 110, and may be disposed in the second moving part 120 or the third moving part 130. When the hinge spring 106 is provided at the second moving part 120 or the third moving part 130, the second moving part 120 or the third moving part 130 may be elastically pushed and an indirect elastic force may be applied to the first moving part 110.

As shown in fig. 1 and 3, a state in which the first moving part 110 and the body part 500 are folded may be defined as a closed state. As shown in fig. 2 and 4, a state in which the first moving part 110 is unfolded from the body part 500 may be defined as an opened state. When the position where the hinge spring 106 is maximally compressed is defined as the turning point, the turning point may exist between the closed state and the open state. The reference numeral L0 denotes a turning point spring pitch which is a pitch for unfolding the hinge spring 106 at the turning point.

In fig. 3 and 4, as the hinge spring 106, a torsion spring is shown. Without being limited thereto, the hinge spring 106 may be a compression coil spring, an extension coil spring, or a plate spring.

The hinge spring 106 may exert an elastic force in a direction from the turning point toward the closed state or in a direction toward the open state. The hinge spring 106 may elastically push the moving

parts

110, 120, 130 to be in the closed state. Reference numeral L1 denotes a closing spring pitch as a pitch for unfolding the hinge spring 106 in the closed state. Because the knee spring spacing L0 is minimal, the closing spring spacing L1 may be greater than the knee spring spacing L0.

The hinge spring 106 may elastically push the first moving part 110 in a direction from the turning point toward the opened state. The opening spring interval L2, which is an interval to unfold the hinge spring 106 in the open state, may be greater than the inflection point spring interval L0.

The second moving part 120 may support the flexible display 300 in a curved state so that the flexible display 300 has a shape surrounding the side surface of the main body part 500. The second moving part 120 may include a plurality of chain blocks 122. A plurality of chain blocks 122 may be guided along the rail unit 200. Since the moving track is a curve, one link 122 can rotate relative to the other link 122.

The first moving part 110 may linearly move on the front surface 501 of the body part 500, and the third moving part 130 may linearly move on the rear surface 502 of the body part 500. The second moving part 120 may connect the first moving part 110 and the third moving part 130 and move curvilinearly at a side surface of the body part 500.

The rail unit 200 may include a first rail 210 guiding the linear track of the first moving part 110, a second rail 220 guiding the curved track of the second moving part 120, and a third rail 230 guiding the linear track of the third moving part 130. The first rail 210 may be adjacent to the front surface 501 of the body portion 500, the second rail 220 may be adjacent to a side surface of the body portion 500, and the third rail 230 may be adjacent to the rear surface 502 of the body portion 500. The first moving part 110 may be inserted in the first guide rail 210 to be linearly movable, the second moving part 120 may be inserted in the second guide rail 220 to be curvilinearly movable, and the third moving part 130 may be inserted in the third guide rail 230 to be linearly movable.

Since the first and third moving

parts

110 and 130 have a flat plate shape, if the first and

third guide rails

210 and 230 are shared, a disadvantage that the moving distance becomes short is expected. Since the second moving part 120 connects the first moving part 110 and the third moving part 130, the second rail 220 is an extended portion of the first rail 210 or an extended portion of the third rail 230, which is advantageous for slimness and simplification of the structure.

According to fig. 7, in order to secure a long moving distance of the first moving part 110, the second guide rail 220 and the third guide rail 230 may be connected to each other. The second guide rail 220 and the third guide rail 230 may be provided separately from the first guide rail 210. In order to maximize the moving distance of the first moving part 110, the first guide rail 210 may be formed to be long across the second side surface part 520 from the first side surface part 510 of the body part 500. Thus, connecting the second guide rail 220 with the third guide rail 230 can reduce the number of formed guide rails to a minimum.

Next, means for improving the assembling property will be described.

When the first moving part 110 is assembled to the main body part 500, the first moving part 110 may be inserted into the rail unit 200 in a first direction from the first side surface part 510 corresponding to one side of the side surface of the main body part 500 toward the second side surface part 520 corresponding to the other side of the side surface of the main body part 500.

Referring to fig. 6 and 7, the first rail opening 211, which is a starting point where the first moving part 110 is inserted, may be located at the first side surface part 510 of the body part 500. The first rail 210 may extend in the first direction from the first rail opening 211 located at the first side surface portion 510.

The second side surface portion 520, which is the other side of the side surface of the body portion 500, may be blocked by the second guide rail 220, which is a curved rail. When the third moving part 130 is assembled to the main body part 500, the third moving part 130 may be inserted into the rail unit 200 from the first side surface part 510 in the first direction.

Referring to fig. 6 and 7, the third rail opening 231, which is a starting point where the third moving part 130 is inserted, may be located at the first side surface part 510 corresponding to one side of the side surface of the body part 500. The third rail 230 may extend in the first direction from the third rail opening 231 located at the first side surface portion 510.

To minimize the number of rails, the second rail 220 may be connected with a third rail 230. At this time, the second moving part 120 may be assembled in the first direction with the third rail opening 231 as a starting point. The second moving part 120 inserted into the third rail opening 231 may pass through the third rail 230, which is a linear section, to reach the second rail 220, which is a curved section.

The first moving part 110 and the third moving part 130 may move in opposite directions. The first rail opening 211 through which the first moving part 110 is inserted into the main body part 500 may be provided in the rail unit 200, and the third rail opening 231 through which the third moving part 130 is inserted into the main body part 500 may be provided in the rail unit 200. The first and

third rail openings

211 and 231 may be gathered at one side of the rail unit 200 to be opened or exposed.

Referring to fig. 6 to 9, the flexible display 300 may include a first face 301 of one side and a third face 303 of the other side. The first surface 301 may be closely fixed to the first moving part 110, and the third surface 303 may be closely fixed to the third moving part 130.

The second face 302 between the first face 301 and the third face 303 may surround the side face or the second side face portion 520 of the body portion 500. Since the second surface 302 is bent and deformed, residual stress may be generated when the second surface is fixedly bonded to the second movable portion 120. When the second moving portion 120 is formed by a plurality of chain pieces 122, the adhesion of the second face 302 to the surface of each chain piece 122 may generate a pattern in which the second face 30 is sharply folded at the connecting portion of the chain pieces 122. In order to reduce local abrupt curvature change of the second surface 302 and continuously form a soft curved surface, the second surface 302 may be supported on the surface of the second moving part 120 in a non-adhered or non-fixed state.

When the respective moving

parts

110, 120, and 130 are assembled to the rail unit 200, the end parts of the respective moving

parts

110, 120, and 130 may be brought into a state of being in contact with each other. When one of the moving

parts

110, 120, and 130 is pushed, the adjacent moving

parts

110, 120, and 130 may also be pushed. However, when one of the moving

portions

110, 120, and 130 is pulled, a mechanism for pulling the adjacent moving

portion

110, 120, or 130 is required. Each link 122 should also be able to be pulled as a combination.

On the other hand, after each of the moving

parts

110, 120, and 130 is assembled to the rail unit 200, the flexible display 300 may be fixed to the first moving part 110 or the third moving part 130. As described above, each link block 122 and the flexible display 300 may be in an unfixed state. The flexible display 300 may be a force transmission mechanism for each of the moving

parts

110, 120, 130.

When the moving

parts

110, 120, and 130 are assembled to the main body part 500, if the third moving part 130 is brought into close proximity to the first moving part 110 or fixes the flexible display 300 in a state of being compressed between the parts, an excessive tension may be locally applied to the flexible display 300, and each moving

part

110, 120, and 130 or each chain block 122 may be assembled in a state of being uneven. After assembly, pulling the first moving part 110 may further aggravate the irregular ruggedness or cause local stress concentration on the flexible display 300 to be more severe.

In order to prevent the unevenness when the first moving portion 110 is pulled, it is conceivable to assemble the parts so that the parts are closely spaced at an appropriate distance or loosely. However, when there is a space, when the first moving part 110 is pushed for the closed state, the flexible display 300 may have irregular unevenness and stress concentration of the coupling part due to difficulty in transferring a compressive force.

In addition, the flexible display 300 needs to be supported by the moving

portions

110, 120, and 130 in a state of being taut without being tilted. In order to solve all of these problems, the present invention establishes the following special measures.

First, assume a case where the parts are assembled in a relaxed state or in a proper spacing without being compressed.

When the first moving part 110 is pulled, various parts can be easily pulled through the transmission of the pulling force of the flexible display 300.

On the other hand, in the present invention, the third moving part 130 and the first moving part 110 may be connected by the first band 410. By the adjusting part, the relative position of the third moving part 130 with respect to the first moving part 110 can be adjusted. Therefore, when the first moving part 110 is pushed toward the second side surface part 520, the first strap 410 may pull the third moving part 130 toward the first side surface part 510. The problem of the inability of the flexible display 300 to transmit compressive forces has been solved.

On the other hand, the adjusting part may adjust the tension of pulling the third moving part 130 toward the first side surface part 510, and may adjust the tension of the flexible display 300. Thus, the flexible display 300 may maintain a taut state even in a loosely assembled state.

On the other hand, in order to prevent the non-adhesive portion of the flexible display 300 from being lifted, the second moving part 120 or each link 122 may be pushed to the outside of the main body part 500, or the second tape 420 may be provided as an elastic mechanism to make the non-adhesive portion to be adhered. Thus, the factors of irregular unevenness or tilting between the second moving part 120 or each link 122 and the flexible display 300 may be eliminated.

Second, it is assumed that the parts are excessively compressed during the assembly process to cause the connection portion to be in an uneven state. A problem may occur in fixing the flexible display 300 in this state. Since the second strap 420 applies an elastic force between the first moving part 110 and the second moving part 120 or between each link 122, it is possible to help the parts to be aligned with a constant force. In the present invention, since the flexible display 300 can be fixed in a state in which the contact force between the parts is uniformly dispersed by the first tape 410, the second tape 420, or the adjustment part, the above-mentioned problem can be alleviated.

The adjusting part may adjust a relative position of the third moving part 130 with respect to the first moving part 110. By the adjusting part, the tension of the flexible display 300 can be adjusted.

The adjustment portion may include a first belt 410, a pinion 417, a rack 418, and a restriction mechanism. One side of the first tape 410 may be fixed to the first moving part 110 by the first tape fixing part 411. The other side of the first belt 410 is fixed to the third moving part 130, and the fixed position can be adjusted.

To this end, a pinion 417 may be rotatably provided at the other side of the first band 410. The pinion gear 417 may be rotatably fixed to the gear block 412. The gear block 412 may be inserted into the bent portion 416 of the other side of the first belt 410. The gear block 412 may be movably inserted into the groove 413 of the third moving part 130. The rack 418 may be formed at the third moving part 130 in such a manner as to be engaged with the pinion 417. The slot 413 may be located at a lower end of the rack 418. When the pinion 417 is rotated, the gear block 412 to which the pinion 417 is mounted may move. The gear block 412 may adjust the fixing position where the other side of the first belt 410 is fixed to the third moving part 130. After the adjustment of the fixing position is completed, the rotation of the pinion 417 can be restricted by the restricting mechanism. The restraining mechanism may include a threaded hole 414 formed in the center of the pinion 417 and a restraining thread inserted into the threaded hole 414. Tightening the binding threads inhibits rotation of the pinion 417.

The second belt 420 may face the second moving part 120. One side of the second strap 420 is fixed to the first moving part 110, and the other side of the second strap 420 is a free end that can be freely contacted with the third moving part 130. The second band 420 having only one side fixed to the first moving part 110 may be a cantilever applying a bending elastic force. The second strap 420 may uniformly apply an elastic force to the second moving part 120 or each link block 122 and push the second moving part 120 or each link block 122 to be adhered to the second face 302 of the flexible display 300. Thus, it is possible to prevent the second face 302 from being tilted, or to reduce the contact state of the unevenness of each link block 122 on average.

The first strap 410 or the second strap 420 may be a plate spring elastically spread in a direction of reducing bending deformation.

The main body 500 may include a first side surface portion 510 protruded from the first moving portion 110 and a second side surface portion 520 bent and moved by the second moving portion 120. The first tape 410 may surround the first side portion 510 and apply an elastic force to the respective parts with the first side portion 510 as a supporting point. The bearing 530 may be inserted into a bent portion of the first band 410 to alleviate friction. The second band 420 may surround the second side portion 520 and apply an elastic force to the second moving part 120.

The first belt 410 may pull the third moving portion 130 toward the first moving portion 110 side with the first side surface portion 510 as a supporting point. The first belt 410 may apply a tensile force to the first moving part 110 or the third moving part 130 with the first side part 510 or the bearing 530 as a supporting point. The first belt 410 may apply an elastic force pushing the first moving part 110 or the third moving part 130 to the outside of the first side part 510 with the first side part 510 or the bearing 530 as a supporting point.

The second band 420 may apply an elastic force pushing the second moving part 120 to the outside of the second side surface part 520. A band hole 123 through which the second band 420 passes may be formed at the chain block 122.

The linear guide or the curved guide of the guide unit 200 may be at least one of the first guide 210, the second guide 220, and the third guide 230. At least one of the first moving part 110, the second moving part 120, and the third moving part 130 may be elastically attached to the linear guide or the curved guide by the elastic force of the first belt 410 or the elastic force of the second belt 420. Even if there is a gap between the guide rail and the moving

part

110, 120, 130 inserted therein, the moving

part

110, 120, 130 may prevent a phenomenon of random flow at the gap and may converge toward a direction in which an assembly tolerance is constant. That is, the moving

parts

110, 120, and 130 may be elastically biased outward of the first side surface part 510 or outward of the second side surface part 520. Accordingly, the flexible display 300 supported by the moving

portions

110, 120, and 130 can maintain a constant assembly position without shaking.

Claims

1. A mobile device, comprising:

a body portion;

a first moving part linearly moving in a closed state or an open state at a front surface of the body part;

a third moving part linearly moving on a rear surface of the body part;

a flexible display which has flexibility capable of bending and deforming and includes a first surface on one side and a third surface on the other side, the first surface being fixed to the first moving portion in close contact therewith, the third surface being fixed to the third moving portion in close contact therewith, and a second surface between the first surface and the third surface surrounding a side surface of the main body portion; and

a second moving portion disposed between the first moving portion and the third moving portion and supporting the second surface of the flexible display in a curved state.

2. Mobile device according to claim 1,

an area of the flexible display exposed to the front surface of the body part is smallest in the closed state and largest in the open state,

the first moving portion and the third moving portion move in opposite directions.

3. Mobile device according to claim 1,

the moving means is provided with a hinge spring having one side fixed to the body portion and the other side fixed to the first moving portion or the third moving portion,

the hinge spring elastically biases the first moving portion or the third moving portion with respect to the body portion in the closed state or the open state.

4. The mobile device according to claim 1, comprising:

an adjusting part that adjusts a relative position of the third moving part with respect to the first moving part or a tension of the flexible display.

5. The mobile device according to claim 1, comprising:

a first belt extending from the first moving portion toward the third moving portion; and

a first tape fixing portion fixing one side of the first tape to the first moving portion,

the moving device can adjust the fixed position of the other side of the first belt fixed on the third moving part.

6. Mobile device according to claim 1,

one side of the first belt is fixed on the first moving part, the other side of the first belt is connected with the third moving part,

the mobile device is provided with:

a pinion gear rotatably provided on the other side of the first belt;

a rack formed in the third moving portion so as to mesh with the pinion; and

a restraint mechanism that restrains rotation of the pinion gear.

7. Mobile device according to claim 1,

the first belt connecting the first moving part and the third moving part and the second belt facing the second moving part are provided.

8. Mobile device according to claim 7,

the first band or the second band is a plate spring elastically spreading in a direction of reducing bending deformation.

9. Mobile device according to claim 7,

the main body includes a first side surface portion that protrudes from the first moving portion and a second side surface portion that bends and moves the second moving portion,

the first band surrounds the first side portion,

the second band surrounds the second side section.

10. Mobile device according to claim 7,

the first belt pulls the third moving part toward the first moving part side with the first side part as a supporting point,

the second belt applies an elastic force pushing the second moving portion from the second side surface portion.

11. Mobile device according to claim 7,

the second moving portion includes a plurality of link blocks,

the second belt is formed with a belt hole through which the second belt passes.

12. The mobile device according to claim 1, comprising:

a rail unit in which a linear rail and a curved rail are formed to be inserted into the first moving part, the second moving part, and the third moving part,

at least one of the first moving part, the second moving part and the third moving part is elastically attached to the linear guide or the curved guide.