KR20190046578A - Link Type folderble hinge Structure - Google Patents

Abstract

The present invention relates to a link type foldable hinge structure capable of rotating left and right body cases around a folding unit, forming a support plate as a link type hinge in space separated into left and right space when closed or opened, connecting the separated space to hold and support the connected space, and performing waterproofing and dustproofing functions.

Description

Link Type Foldable Hinge Structure [

The present invention relates to a link type folderable hinge structure. In brief, when a flexible display panel is folded and extended in a semicircular shape, a circle corresponding to a half circle of a lower floor of a flexible display panel A bottom plate block device which is slidable in the left and right directions is mounted on the left and right cases using a length deviation with respect to the sum of the length and the center straight line length of the axis of the link connected to the lower foot plate block, The present invention relates to a link type folderable hinge structure having an effect of being semi-automatically operated.

With the development of display technology, various display devices such as a flexible display device and a transparent display device have been developed. The flexible display device can be folded or used according to the usage situation by the user, so that the volume of the electronic device can be drastically reduced.

The flexible display device may be implemented in the form of an organic light emitting display device, a liquid crystal display device, or the like. For example, in a conventional liquid crystal display device and an organic electroluminescent display device, a flexible display device can be manufactured using a flexible material such as an organic substrate replaced with a plastic film. Further, in a conventional liquid crystal display device and an organic electroluminescent display device, a flexible display device can be manufactured by using a flexible material at least at a folded portion.

As the flexible display device is used, various application fields are emerging. For example, in the field of e-books that can replace magazines, textbooks, books, comics, and other portable IT products, such as ultra-small PCs that can be folded or rolled up and smart cards capable of real- A flexible display device can be applied. On the other hand, it is required to develop an interface that can take advantage of these advantages while reflecting the characteristics of the flexible display device.

When a conventional flexible display device is used with a folder-type display device, a mechanism as a hinge is fastened to an area where the display panel is folded.

However, since a commonly used hinge is formed to be rotatable on the connecting portion of two display panels, when the panel is folded, the inner and outer surfaces of the display panel of the folded area are stretched to different lengths. That is, the outer surface of the display panel receives a stronger tension than the inner surface.

That is, the conventional hinge structure used in the flexible display device has a problem that a strong tensile force and a compressive force are generated at the folded portion each time the display panel is folded, causing damage to the display panel.

In the patent document similar to the folder-foldable hinge structure in which the flexible display panel according to the present invention is folded, Publication No. 10-2017-0057500, Application No. 10-2015-0161452, Quot; display device " The folderable hinge structure to which the flexible display panel according to the present invention is folded Publication No. 10-2017-0087008, Application No. 10-2016-0085164, Quot; hinge structure for a mobile communication device in which a flexible display panel is installed ".

The present invention relates to a foldable display device in which a flexible display panel is required to be supported when the foldable display device is unfolded, Type folder hinge structure capable of supporting waterproof and dustproof by providing a lower cover that stably supports the connection portion of the foldable display device and surrounds the outer portion of the connection portion of the foldable display device.

In order to accomplish the above object, the rotary shaft is placed in the center of the lower side of the contact surface when the left and right body cases are folded, and a plurality of lower foot plates having different lengths according to positions are arranged in order, Are connected to each other in a zigzag manner by a plurality of link plates and link connecting shafts, and the left and right upper surfaces of the left and right upper and lower surfaces of the flexible display panel The bottom plate is fixed to a plurality of upper support plate fixing pillars in the left and right body cases and the outer lower plate is slidable between the space of the body case of the right and left stopper brackets, The outer bottom plate has a ball cage that functions as a stopper. And the left and right upper support plates are crossed at the central portion of the folding of the flexible display panel when the left and right body cases are unfolded, The present invention realizes a link type folderable hinge structure that supports and supports the bottom surface with respect to the discontinuous receiving section of the display panel.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a foldable display device capable of folding a flexible display panel, The present invention provides a link-type folder-blind structure.

In order to accomplish the above object, the link type folderable hinge structure according to the present invention can stably compensate the length of a call with respect to a radius when the flexible display panel is folded so that the flexible display device can be folded or unfolded. And the body case is divided into left and right sides to have a discontinuous section,

Therefore, in order to configure the folding unit for folding the left and right body cases to be connected to each other,

The link type folder bend structure is composed of four parts. In order to enable the four parts to operate in conjunction with each other,

And a flexible display panel installed inside the body case in a folded state,

A flexible display panel support for supporting the flexible display panel is disposed at an upper inner side of the body case on the left and right sides of the flexible display device,

An upper support plate 10 having a flexible support section, which is connected to the ends of the flexible display panel support in the same line, is arranged to be fixed to left and right sides,

Below the left and right upper support plates 10 there is a lower support plate block,

The lower support plate block is provided with a lower portion inside the body case having a column for fixing the upper support plate for restricting the sliding operation of the lower support plate block only in the radius of rotation,

The side cover 80 is connected to the outer periphery of the body case so as to surround the discontinuous section separated to the left and right sides of the body case.

When the four part constituent elements such as the above-mentioned upper support plate 10, the lower support plate block, the lower part inside the body case, and the side cover 80 are described separately,

First, the upper support plate 10 is connected in line with the upper surface of the flexible display panel support, and has bolt holes which are fixed by the upper support plate fixing pillars at the lower inner side of the right and left body cases,

The upper support plate 10 has a flat upper surface except for a section where the upper support plate 10 is folded into a semicircle,

At the lower end of the plate, a stopper protrusion groove is provided so that the stopper bracket can be vertically set up in the middle,

A stopper protrusion groove is provided to allow protruding protrusions of the stopper bracket to be fitted in the upward direction from below the plate portion to be connected to the stopper bracket,

The stopper bracket is fitted and fixed to the stopper protrusion groove and the stopper bracket groove at the lower inner side of the body case, and serves as a left and right guide when the lower plate block slides between the stopper brackets.

The stopper bracket has a ball stopper hole that allows the ball of the ball cage to move and move within the stroke range,

The upper support plate 10 is slid on the left and right by 1/2 of the length of the arc with respect to the radius of the half circle with respect to the section where the flexible display is folded into the semicircle,

When the folder-type smartphone is folded, the upper base plate 10, which is symmetrical to the left and right sides, is disposed parallel to the flexible display panel,

When the folder-type smartphone is expanded, the upper base plate 10, which is symmetrical to the left and right sides, is flatly straightened while being rotated together with the flexible display panel. The length of the arc with respect to the radius of the half circle with respect to the section where the flexible display is folded into semi- 10) intersect each other in a zigzag form where they meet and compensate and support.

In addition, when folded, the intersecting ends of the upper and lower support plates 10 arranged symmetrically to the left and right substantially abut against each other with a clearance therebetween to serve as a stopper, so that the lower support plate 10, The block is structured such that it can not be pushed inward in the direction in which the upper support plate 10 is fastened by the bolts and fixed.

Second, the lower support plate block functions to support the upper support plate 10 from the lower side. In the process of folding or unfolding the flexible display device, the lower support plate block is positioned between the lower end surface of the flexible display panel and the flexible pedestal, The deviation of the curvature length with respect to the radius of gyration due to the variation of the radius of curvature can not be avoided.

When the flexible display device is folded, the flexible support section is naturally collapsed together with the flexible display panel. When the flexible display section is unfolded, the flexible support section is required to be pulled from both the left and right sides.

In order to do so, the length of the arc with respect to the radius of the 180 ° semicircle is 1/2 of the width of the flexible display corresponding to the length of the flexible display corresponding to the length deviation caused by the radius of curvature when expanded, C (40, 41, 42), it should be straight and flat.

In order to realize such a structure, a bottom support plate block is formed as follows.

B, and C (50, 51, 52) and outer bottom support plates A, B, C (40, 41, 42) having a through- A plurality of link plates 60 and a link connecting shaft 70, and they must be connected in the form of a single block,

B, C (50, 51, 52) and the lower outer side plates A, B, C (40, 41, 42) are arranged in this order, and the bottom plate The link plate 60 is sandwiched between the link plates 60,

 When the lower support plate connection shaft 70 is inserted in the longitudinal direction of the lower inner support plates A, B, C (50, 51, 52) and the lower outer support plates A, B, C The support plates A, B and C 50, 51 and 52 and the lower outer support plates A, B and C 40, 41 and 42 are formed into a single block by the link plate 60, And the lower supporting plates connected to each other are horizontally expanded or folded in cooperation with each other,

The balls 100 and the ball springs 110 and the ball spring guides 120 are fixed to the outer lower support plates A, B, C (40, 41, 42) A number of ball cages are built in,

The left and right outer lower support plates A, B and C (40, 41, and 42) are arranged at the positions corresponding to the ball stopper holes of the stopper bracket of the upper fixed support plate 10 so as to maintain the folded or unfolded state. B, and C (40, 41, and 42) are moved by the ball stopper holes to stably maintain the angular state according to the positions of the ball stopper holes in the process of unfolding or folding.

The ball cage slides left and right with a constant stroke between the upper and lower left and right spaces between the lower surface of the plate of the upper support plate 10 and the lower end of the body of the body and the stopper bracket,

The ball cage stops at the ball stopper hole of the stopper bracket by the compression force of the built-in ball spring (110).

Therefore, by the ball spring 110 of the ball cage slidingly sliding between the upper support plate 10 and the side cover 90 and functioning as a stop,

When the flexible display panel is unfolded, the ball is pushed out of the ball guide 120 and is inserted into the ball stopper hole of the stopper bracket, so that a binding force is generated,

B, C, D (50, 51, 52, 53) connected to each other by a plurality of link plates 60 and the outer lower supports A, B, C (40, 41, 42) By the sides, it suppresses the phenomenon of ducking down when the flexible display is pressed down by the hand or the instrument,

When the flexible display panel is folded, the angled surfaces of the inner bottom plate A, B, C (50, 51, 52) and the outer bottom plate A, B, C (40, 41, 42) The upper end of the lower support plate 10 and the upper end of the lower support plate 10 are connected to each other.

Third, the upper support plate fixing column at the lower part inside the body case has two roles,

First, it serves as a pillar for firmly holding the position of the upper support plate 10,

Secondly, in a position where a long hole is formed on the wide side of the lower floor plate A, B, C (40, 41, 42) of the lower floor plate block, in the operation of folding or unfolding the lower floor plate block, Serves as a guide as well as a stopper.

Fourthly, the side cover 80 connects the left and right sides and the lower surface of the flexible display device except for the upper surface of the flexible display panel, in which the body case is separated from the left side and the right side,

Since the side surface and the bottom surface of the lower base plate block can be tightly enclosed in the inner space, waterproof and dustproof can be achieved,

The side cover 80 is molded so as to be connected to the left and right body cases through a joining method such as a double-sided tape or a heat fusion without a gap, and is injected using a tough material having elasticity,

At this time, the center portion of the rotation is compressed when folded, and the outer portion of the lower base plate block is surrounded by the elasticity as it goes to the outer diameter,

The flexible display panel and the bottom surface of the body case are compressed so as to be parallel to each other

According to the link type folder baffle structure of the present invention, the left and right body cases can be folded or folded to the left and right of the folder-type smart phone, The hinge part is composed of a block, a link plate, a lower plate, a connecting shaft, and a side cover. When the foldable smart phone is folded, the left and right body cases are inclined at an angle When the foldable smartphone is folded or unfolded, it is possible to stably and firmly operate the foldable smartphone. When the foldable smartphone is folded and unfolded, The ball cage built in the outer base plate and the ball in the top base plate Not have the net effect is folded or unfolded, as a semi-automatic by the hole, and given wrapped rotate along the bottom surface and the side connections of the left and right body case by a side cover can be a water and dust

FIG. 1 shows a plate portion and a stopper bracket on the upper surface of the upper support plate 10 of the link type folder baffle structure according to the present invention, and shows a direction in which the stopper bracket is inserted.
FIG. 2 is a view showing a portion-by-part designation of the plate portion of the upper surface of the upper support plate 10 of the link-type folderable hinge structure according to the present invention.
FIG. 3 shows a top plate slot cover 30 of the plate portion of the top surface of the top plate plate 10 of the link type folder baffle structure according to the present invention, and shows the assembly direction.
4 shows the fastening bolt and bolt cover 20 of the plate portion of the upper surface of the upper support plate 10 of the link type folder baffle structure according to the present invention and shows the assembling direction.
Fig. 5 shows the shape of Fig. 4 when viewed from below.
6 is a cross-sectional view of a bottom plate block of a link type folder baffle structure according to the present invention, in which a ball cage is mounted on an outer lower plate.
7 shows the arrangement of the inner bottom plate.
8 is an exploded view of the components of the link type folder baffle structure according to the present invention.
FIG. 9 shows the assembled state of the lower support plate block of the link type folderable hinge structure according to the present invention, and shows the names and names of the respective parts.
FIG. 10 is a view for explaining the designations of the respective portions of the lower support plate block of the link type folderable hinge structure according to the present invention.
FIG. 11 is a view for explaining a position where the parts are placed on the respective parts, showing the lower support plate assembly jig of the link type folder baffle structure according to the present invention.
12 is a view illustrating a process of assembling a lower support plate block to a lower support plate assembly jig of a link type folderable hinge structure according to the present invention.
FIG. 13 illustrates a state in which the lower support plates are aligned with the lower support plate assembly jig of the link type folderable hinge structure according to the present invention.
FIG. 14 shows a direction in which a linking type folder hinge structure according to the present invention is inserted into a lower support plate assembly jig from the side to which a lower support plate connection shaft 70 is inserted.
FIG. 15 shows a state in which the lower support plates are aligned with the lower support plate assembly jig of the link type folder baffle structure according to the present invention, and the lower support plate connection shaft 70 is inserted and assembled.
16 shows a position where the upper support plate 10 is assembled on the lower support plate block on the lower support plate assembly jig of the link type folder baffle structure according to the present invention.
FIG. 17 illustrates lifting up the assembled link type folderable hinge structure in the lower tray assembly jig of the link type folderable hinge structure according to the present invention.
18 shows the direction and position in which the lower pedestal plate cap 130 is inserted into the side surface of the link type folderable hinge structure according to the present invention.
Fig. 19 shows the respective parts of the body case and the link type foldable hinge structure according to the present invention being seated for assembling to the body case.
FIG. 20 illustrates a state in which the link type folderable hinge structure according to the present invention is seated to be assembled to the body case.
21 is a view showing a direction in which a bolt is fastened and a bolt lid 20 for assembling a link type folderable hinge structure according to the present invention to a body case.
22 shows a state in which the bolt cover 20 is covered after the link type folderable hinge structure according to the present invention is bolted to the body case.
FIG. 23 shows a process and a state in which a flexible film is attached to the upper bottom surface of the body case after assembling the link type folderable hinge structure according to the present invention to the body case.
FIG. 24 illustrates a state in which the link type folderable hinge structure according to the present invention is operated after assembling to the body case.
FIG. 25 shows the name of each part in the folded state after assembling the link type folderable hinge structure according to the present invention to the body case.
FIG. 26 is a plan view of the link type folderable hinge structure according to the present invention, after assembling the link type folderable hinge structure to the body case.
FIG. 27 shows a section for the city 26 after assembling the link type folderable hinge structure according to the present invention into the body case.
28 shows a section for the city 26 after assembling the link type folderable hinge structure according to the present invention to the body case.
29 is a perspective view of a folded state after assembly of a link type folderable hinge structure according to the present invention in a body case and showing a position where a link type folderable hinge structure is disposed.

The link type folder baffle structure according to the present invention is composed of four parts such as an upper support plate 10, a lower support plate block, a lower end portion inside the body case, and a side cover 80.

Referring to FIG. 1, the upper support plate 10 is perpendicular to the flat surface in the middle of the upper flat plate, and extends in the direction in which the outer lower support plates A, B, C (40, 41, And a cover is placed so as to be able to maintain the flatness by the upper base plate cover 30,

A bolt is fastened by a tab on the upper support plate fixing column at the lower part of the body case. After the bolt is fastened, a cover is placed so as to maintain the flat surface with the bolt cover (20) at the head part.

At the lower end of the flat plate of the upper support plate 10, the grooves are widened in the folding direction of the smartphone. Although the body case is divided into left and right sides, in order to transmit and receive signals to / from each other using Fpcb (flexible PCB) Lt;

In order to make the Fpcb to be connected to the left and right, it is necessary to give the groove as long as the thickness of Fpcb so that the Fpcb can pass seamlessly. Therefore, it is made to secure a sufficient thickness dimension. ), The Fpcb is cut into the same width and depth so as to be smoothly connected to the left and right sides,

Referring to FIG. 2, the flat plate and the ball stopper bracket have grooves through which the ball stopper bracket can be fitted to the flat plate, and protrusions are formed on the ball stopper bracket to engage with the grooves of the flat plate.

Referring to FIG. 1, the ball stopper bracket at the two left and right edges of the upper support plate 10 has a ball stopper hole for fixing the flexible display device at 180 ° and 0 °,

The ball stopper bracket at the center of the two places a ball stopper hole at a position where it can stop at an arbitrary angle (for example, 36 °, 72 °).

Since the ball stopper bracket is always perpendicular to the upper support plate 10 and is fixedly inserted into the groove of the lower end of the body of the body case, the outer lower support plates A, B, C (40, 41, 42) So that it is slidable between the guide rails.

Referring to FIG. 3, the protruding portion of the stopper bracket of the upper support plate 10 is covered with the upper support plate groove cover 25 so as to be parallel to the plate surface of the upper portion of the upper support plate 10,

Referring to FIG. 4, there is a bolt hole on the plate surface of the flat upper part of the upper support plate 10 so as to be fastened with the body case and the bolt.

A bolt hole is formed in the bolt hole so that the head of the bolt is buried in the plate surface of the flat upper part of the upper plate 10. The bolt cover 20 is formed so as to be parallel to the plate surface of the flat upper part of the upper plate 10. [ And,

 FIG. 5 is a view showing the bottom plate as viewed from below. In the opposite surface of the bolt hole, the upper plate is vertically installed on the lower side of the body case, So that it is always assembled at a predetermined position when the upper support plate 10 is assembled to the body case.

Referring to FIG. 6, a section of the upper support plate 10, which is folded in a semicircular shape, is a flat plate at the left and right sides of the upper support plate 10 in order to smoothly bend the flexible display panel with a natural radius of curvature without any interference, The length of the same arc corresponding to the semicircle of the flexible display panel generated is divided into left and right sides by 1/2, and the overlapped portions are intersected with zigzag.

When the left and right body cases are expanded, the lower surface of the upper support plate 10 horizontally abuts on the upper surface of the lower support plate block, thereby supporting the lower support plate 10.

10, when the flexible display panel is folded into a semicircular shape, the upper support plate 10 is fixed parallel to the left and right sides of the section where the support is required,

Referring to FIG. 17, the enlarged portion of each of the overlapping portions is zigzag with respect to each other to support the flexible display panel,

25, the end of the upper support plate 10 contacts the upper surface of the inner lower support plates A, B, C (50, 51, 52) to serve as a stopper to prevent the lower support plate block from coming in. .

When the flexible display panel is unfolded, the length of the same arc corresponding to the semicircle of the flexible display panel is supported by the longer portion of the upper support plate 10 by 1/2 from the left and right sides with respect to the section where the support is required. Can be seen with reference to FIG.

 Referring to FIG. 5, since the Fpcb is connected to the left and right at the lower end of the upper plate 10 as shown in the lower surface of the flat plate, the Fpcb needs to have a width and a groove of a thickness so that the Fpcb can pass therethrough. The dimensions are secured in advance.

Referring to FIG. 10, the upper support plate 10 supports the flexible display panel while stretching the flexible display panel so as to prevent the flexible display panel from tilting when the user touches or presses the flexible display panel. At the same time, And is supported regardless of the gap between the open angle and the gap created by the link plate 60. [

In addition, a double-sided tape having elasticity on the lower surface with respect to the length of the half circle arc of the flexible display panel is not required to be integrated with the flexible display panel in the portion where the section supporting the flexible display panel is broken.

9, the lower support plate block of the link type folder baffle structure has outer lower support plates A, B and C (40, 41, 42) on the left and right outer sides and inner lower support plates A, B, C 50, 51, and 52 are arranged so as to be symmetrical with respect to the center where the flexible display panel is folded,

 10, the inner bottom plate A, B, C (50, 51, 52) including the left and right outer bottom plate A, B, C (40, 41, 42) The number of columns is 6, and the angle is 5,

At this time, since the angle of the upper side contact angle of the lower support plate should be 180 deg., The angle of contact of the upper side of the lower support plate should be 180 deg. Divided by 5 so that each contact angle becomes 36 deg. The angle becomes 18 degrees.

Therefore, when the lower base plate block is folded, it becomes "36 ° X 5", and it is folded into a semicircular shape having a total contact angle of 180 °.

That is, the contact angle has a correlation with the number of rows of the inner bottom plate.

Referring to FIG. 10, the two enlarged circles on the upper side show the inner bottom plates A, B, C (50, 51, 52) including the left and right outer lower pedestal plates A, The upper surface of the flexible display panel is made to be a flat plane when all of the flexible display panels are unfolded,

The left and right side surfaces of the left and right outer lower support plates A, B and C (40, 41 and 42) contacting the inner bottom support plates A, B and C (50, 51 and 52)

B, C (50, 51, 52) at the left and right sides of the respective rotating centers of the inner bottom plate A, B, C (50, 51, 52) The structure of the lower support plate block is formed to have a round shape with a radius having a tolerance,

(50, 51, 52) and the inner bottom plate A, B, C (40, 41, 42) Make a jig and solve it.

B, and C (50, 51, 52) are arranged in the order of the outer bottom plate A, B, C (40, 41, 42) and the inner bottom plate A Simply fill in the length and shape of the space,

The link plate 60 is sandwiched between the rows of the lower support plate. The first assembly process of the lower support plate block is shown in FIG. 12, and FIG. 13 shows a state where the first assembly is assembled.

When the first process is completed, a secondary process of inserting the support plate connecting shaft 70 in the line direction is shown in FIG. 14. Then, in FIG. 18, 130), the bottom support plate block can be simply completed.

The reason why the lower pedestal plate cap 130 is inserted at both ends of the lower pedestal plate block is to prevent the pedestal plate connecting shaft 70 from falling out of the lower pedestal plate block to damage the side cover 80

Referring to FIG. 9, a stopper bracket vertically installed at a midway between the lower surface of the flat plate of the upper plate 10 and the plate to control the ball position of the ball cage, and a slide between the lower plate fixing pillars at the lower end of the body case The plate portions of the outer lower support plates A, B, and C (40, 41, and 42)

27, the distances between the inner centers of the holes in the vertical slots in the outer lower support plates A, B, C (40, 41, 42) disposed on the left and right sides of the lower support plate block, Coincides with the distance when it is in the expanded state,

Referring to FIG. 25, the outer center distance of the hole in the vertical direction is calculated by calculating the length of the arc of the half circle by 180 degrees in the semicircular shape when the flexible display panel is folded, and reflects the position value Because

Therefore, the length between the centers of the slots in the vertical direction is equal to the length between the support plate shaft holes in the outer lower support plates A, B, C (40, 41, 42) disposed on the right and left sides of the lower support plate block, The lower surface of the film is folded in a semicircular shape, and a length of 1/2 of the length deviation of the arc with respect to the turning radius is the hole-center length of the slot in the vertical direction.

Referring to FIGS. 25, 26, and 27, when the flexible display panel is expanded, the upper support plate fixing pillars at the lower end of the body case are pushed outward from the lower support plates A, B, C Of the elongated hole in the vertical direction,

When the flexible display panel is folded, the upper support plate fixing column at the lower end inside the body case is positioned at the center of the outermost end of the elongated hole in the vertical direction of the outer lower support plates A, B, C (40, 41, 42).

As a result, the outer bottom plate A, B, and C (40, 41, and 42) are modularized in the vertical plane of the upper plate 10, In addition,

B and C (40, 41, and 42) are slid in the hole center distance of the long hole by the long hole in the vertical direction of the outer lower support plates A, B and C (40, 41 and 42) And flatten out the flexible display panel from the outside, folding it into a semicircle, and protecting it.

In order to implement the above-described operation, a column for fixing the upper support plate is disposed at the lower end of the body case,

Referring to FIG. 19, the column for fixing the upper support plate is formed in a round shape like a column at the lower end of the inside of the body case. As shown in FIG. 21, the upper center of the column has tabs for fastening bolts for fastening.

The upper support plate fixing pillars at the lower end of the body case serve to control the outer lower support plates A, B, C (40, 41, 42) to slide only within the stroke range and to fix the upper support plate 10 And,

In order to prevent the flexible display panel from touching the flexible display panel from the bottom to the bottom of the body case on the left and right sides and to prevent the display panel from being dented down when pressed, The upper support plate fixing column is placed so that it can be fastened by fixing the upper support plate.

Accordingly, a tab is provided at the center of the upper surface of the column for fixing the upper support plate, and the space at the lower end of the upper support plate 10 and the inner surface of the body case is constantly and firmly held and supported

Further, it functions to control the position of the outer lower support plates A, B, C (40, 41, 42) in the vertical direction and to prevent the lower support plate block from falling off when folded or unfolded.

Referring to FIGS. 24 and 25, the side cover 80 connects the left and right sides and the lower surface of the flexible display device except the upper surface of the flexible display panel, in which the body case is separated from the left side and the right side, respectively Structure,

Since the lower support plate block located in the inner space of the side cover 80 is closely contacted with the contact surfaces with the body case, waterproof and dustproof can be performed,

It is made to be connected through the joining method such as double-sided tape, heat fusion, double injection, etc. without the left and right body case and gap, and is made using a tough material having elasticity.

 When the flexible display device is folded, the folded center portion of the side cover 80 is compressed to form a small semicircle. When the flexible display device is folded, the side cover 80 is stretched by the stretchability toward the outer diameter and wraps the outer diameter of the lower base plate block. And the surface of the flexible display panel and the bottom surface of the body case are compressed so as to be horizontal.

While the preferred embodiments of the present invention have been described above using specific terms, such description is for illustrative purposes only and that various changes and modifications may be made without departing from the spirit and scope of the following claims. Such modified embodiments should not be understood individually from the spirit and scope of the present invention and should be regarded as belonging to the claims attached hereto.

10: upper base plate 20: bolt cover
30: Upper base plate groove cover
40: Outer bottom plate A 41: Outer bottom plate B
42: Outer bottom plate C
50: inner bottom plate A 51: inner bottom plate B
52: Inner bottom plate C
60: a link plate
70: Lower support plate connecting shaft
80: side cover
100: ball 110: ball spring
120: Ball spring guide 130: Lower pedestal plate cap

Claims (2)

Left body case:
Right body case: and
And a flexible display panel installed inside the left and right body cases when the left and right body cases are folded,
(The outer bottom plate, the inner bottom plate, the link plate, and the bottom plate connecting shaft) connecting the left and right body cases to each other so as to be folded with respect to each other,
When the flexible display panel is folded, when the length of the arc corresponding to the bottom surface radius of the semi-circular flexible display panel is expanded, the lower support plate block is moved in the vertical direction And the ball stopper hole of the stopper bracket vertically installed on the upper base plate,
The upper surfaces of the upper and lower surfaces of the upper and lower plates are orthogonal to each other with respect to the upper surface of the lower surface of the lower plate,
The sum of the side contact angles above the center of the lower pedestal plate at the time of folding is 180 ° so that the left and right outer lower pedestal plates and the inner lower pedestal plate are connected to each other by the link plate and the lower pedestal plate connecting shaft, And the left and right side surfaces of the center hole of the lower support plate are the same as the widths of the inner bottom plate (the hole center distances of the link plates) but have a round shape of radius having a tolerance that can be rotated by the link plates, The lower support plate block is folded by the rounds at the center of the left and right sides,
A plurality of ball cages are mounted on the outer lower plate, and when the balls of the ball cage are expanded or folded, they are moved between the ball stopper holes of the stopper bracket vertically attached to the upper plate, The structure of the hinge that folds or unfolds as it is adjusted.
The method of claim 1, wherein
When the foldable smartphone is folded with the upper support plate between the flexible display panel and the lower support plate block, the length of the same arc corresponding to the semicircle of the flexible display panel, which occurs when the end of the upper support plate is folded as a flat plate, Wherein the foldable smartphone is folded in a semicircle so that the foldable smartphone can be folded when the foldable smartphone is folded.

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