KR102250196B1 - Foldable Display Device - Google Patents

Abstract

Disclosed is a foldable display device to prevent distortion and breakage of a display. According to an embodiment of the present invention, the foldable display device comprises: a first body and a second body formed in a plate shape of the same shape and arranged symmetrically; an image part attached to the first body and the second body to be folded or unfolded and forming a bent arc-shaped part when folded; and a hinge device coupled to connect the first body and the second body and connected to rotate within a range between an unfolded state lying on the same plane and a folded state overlapping each other. The hinge device includes: a first bracket coupled to the first body, and a second bracket coupled to the second body; first and second main shafts coupled through one end of each of the first and second brackets, having a pin formed to protrude from the outer circumferential surface thereof, and arranged in parallel; a slider including first and second tubes fitted to the outer surfaces of the first and second main shafts, respectively, having guide grooves formed in an oblique direction, and allowing the pins installed in the first and second main shafts to be coupled to the guide grooves of the first and second tubes, respectively, to guide rotation of the first and second main shafts; and a moving part including a first link connector fitted to the outer surfaces of the first and second main shafts and connected to the slider, a second link connector fitted to the outer surfaces of the first and second main shafts, first and second links hinged to the first and second link connectors, respectively, and first and second connection plates formed in the first and second links and attached to the first body. When the first and second bodies are folded, the first and second connecting plates are close to each other and the first and second link connectors move along the first and second main shafts to approach each other.

Description

Foldable Display Device

The disclosed content relates to a foldable display device, and more particularly, a first body and a second body of an electronic device having a foldable display are rotatably connected, and a rotation angle between the first and second bodies is smoothly set. It relates to a foldable display device that makes it possible to do so.

Unless otherwise indicated herein, the content described in this section is not prior art to the claims of this application, and inclusion in this section is not admitted to be prior art.

Industrial demand for portable electronic devices, including portable terminals, is increasing more and more year by year, and accordingly, portable electronic devices having various shapes and functions to meet the needs of consumers are being introduced.

A typical portable terminal such as a mobile phone has an image unit that displays images or pictures, and a portable terminal with an added function to visually obtain various information by watching TV or using wired/wireless Internet through such an image unit has also appeared. have.

In addition, portable terminals are being developed in various forms according to consumer needs and functional characteristics, and are being developed in various ways such as a folder type, a slide type, and a bar type.

Here, the folder-type terminal refers to a terminal in a form in which two bodies are hinged to each other and unfold in order to expand the available immunity, and it is continuously developed due to the excellence of structural features.

In particular, in recent years, as the development of thin-film liquid crystal technology and miniaturization of other components are possible, most portable terminals are generally becoming slimmer, and their demand is increasing day by day.

However, since the appearance of conventional mobile terminals has been developed based on an external appearance that is more suitable for performing communication functions such as voice calls and message transmission, there is a disadvantage that it is somewhat inconvenient to use multimedia services, for example, general mobile terminals. Since the display device of is set to be long in the vertical direction, it is inconvenient to watch digital multimedia broadcasting and video files.

In order to solve this problem, Korean Patent Registration No. 10-0909713 discloses a "portable terminal hinge device" as a registered patent of the present applicant, and an exemplary embodiment of the present invention improves the above problems. In order to achieve this, there is disclosed a hinge device for a portable terminal capable of rotating the cover of the portable terminal by 360 degrees and a reference open angle in an up-down direction while ultimately promoting the structural stability of the entire device.

According to the Korean Patent Registration No. 10-0909713, it is possible to improve the convenience of use and to satisfy the needs of consumers who want to use the display unit of a portable terminal in a relatively wide range. However, there is room for improvement, and development of a new type of hinge device and an electronic device using the same is required.

For example, in order to meet the needs of consumers who prefer a large display screen even though it is a small electronic device, a liquid crystal screen is formed on both bodies that rotate and the electronic device is unfolded. There is a need to provide an electronic device in a form that forms a large screen, and a hinge device in a form suitable for this needs to be developed.

On the other hand, in such a foldable display, since the image portion is not folded like paper and an arc-shaped bent portion having a predetermined radius remains, there is a need to minimize the arc-shaped bent portion so that both bodies are not lifted when folded.

The disclosed contents may provide a hinge that prevents deformation and damage of the display by correcting a variable length deviation of the flexible display during folding and unfolding by arranging a hinge structure in an area where the flexible display is folded.

The purpose of the examples is,

A first body and a second body formed in a plate shape of the same shape and arranged symmetrically; An image part which is attached to the first body and the second body to be folded or unfolded, and when folded, a bent arc-shaped part is formed;

Including; a hinge device coupled to connect the first body and the second body to rotate within a range of an unfolded state lying on the same plane and a folded state overlapping each other; and

The hinge device,

A first bracket coupled to the first body and a second bracket coupled to the second body;

First and second main shafts which are coupled through one end of each of the first and second brackets, have pins protruding from the outer circumferential surface, and are arranged in parallel;

The first and second pipe bodies are fitted to the outer surfaces of the first and second main shafts, and guide grooves are formed in an oblique direction,

A slider in which pins formed on the first and second main shafts are coupled to guide grooves of the first and second pipes to guide rotation of the first and second main shafts;

The first link connector is fitted to the outer surfaces of the first and second main shafts and connected to the slider, the second link connector is fitted to the outer surfaces of the first and second main shafts, and the first and second link connectors are hinged respectively. Including; first and second links that are formed, and a moving part formed on the first and second links and composed of first and second connection plates attached to the first body,

When the first and second bodies are folded, the first and second connecting plates are brought into close proximity, and the first and second link connectors are moved along the first and second main axes, and thus, the foldable display device may be brought into close proximity to each other.

First and second shaft pins respectively fitted to the first and second tube bodies of the slider, and first and second springs respectively coupled to the first and second shaft pins.

The first support plate supported by the first and second springs and coupled to the first and second shaft pins, the second support plate coupled in parallel with the first support plate and coupled to the first and second shaft pins, and interposed between the first and second support plates And a gear connecting portion composed of first and second gears respectively coupled to the first and second shaft pins, and a plurality of interlocking gears that are toothly coupled to the first and second gears.

According to the disclosed embodiment, there is an effect of providing a hinge that prevents deformation and damage of the display by correcting a variable length deviation of the flexible display during folding and unfolding by arranging a hinge structure in an area where the flexible display is folded.

1 is an exploded perspective view showing a foldable display device according to a first embodiment;
2 is a cross-sectional view of an expanded state of the foldable display device according to the first embodiment;
3 is a perspective view of an expanded state of a'hinge device' in the foldable display device according to the first embodiment;
4 is an exploded perspective view of an enlarged portion of FIG. 3;
5 is a perspective view showing a folded state of a'hinge device' in the foldable display device according to the first embodiment;
6 is a perspective view showing the'hinge device' in FIG. 5;
7 is an enlarged perspective view showing a half-folded state of a'hinge device' in the foldable display device according to the first embodiment;
8 is an enlarged perspective view showing a state in which a'hinge device' is horizontally unfolded in the foldable display device according to the first embodiment;
9 is an unfolded perspective view of a foldable display device according to another exemplary embodiment;
10 is a perspective view from above of a'hinge device' of a foldable display device according to another embodiment;
11 is an exploded perspective view of FIG. 10;
12 is a perspective view from below of a'hinge device' of a foldable display device according to another embodiment;
13 is an exploded perspective view of FIG. 12,
14 is an enlarged front view showing an unfolded state of a'hinge device' of a foldable display device according to another embodiment;
15 is a perspective view showing an unfolded state of a'hinge device' of a foldable display device according to another embodiment;
16 is a perspective view showing a folded state of a'hinge device' of a foldable display device according to another exemplary embodiment.

Hereinafter, preferred embodiments will be described in detail based on the accompanying drawings.

The embodiments to be described below are intended to be described in detail enough to allow those of ordinary skill in the art to carry out the invention easily, thereby limiting the technical spirit and scope of the present invention. I don't mean it.

In addition, the size or shape of the constituent elements shown in the drawings may be exaggerated for clarity and convenience of description, and terms specially defined in consideration of the configuration and operation of the present invention vary according to the intention or custom of users and operators. It should be noted that, and definitions for these terms should be made based on the contents throughout the present specification.

In the accompanying drawings, FIG. 1 is an exploded perspective view showing a foldable display device according to an embodiment, FIG. 2 is a cross-sectional view of an expanded state of a foldable display device according to an embodiment, and FIG. 3 is a foldable display device according to the embodiment. In a perspective view of an expanded state of the'hinge device', FIG. 4 is an enlarged exploded perspective view of a part of FIG. 3, and FIG. 5 is a perspective view showing a folded state of the'hinge device' in the foldable display device according to the embodiment, FIG. 6 is a perspective view showing the'hinge device' in FIG. 5, FIG. 7 is an enlarged perspective view showing a half-folded state of the'hinge device' in the foldable display device according to the embodiment, and FIG. 8 is a foldable display device according to the embodiment It is an enlarged perspective view showing the horizontally unfolded'hinge device'.

A foldable display device according to an embodiment includes: a first body P1 and a second body P2 formed in a plate shape having the same shape and arranged symmetrically; An image portion P3 that is attached to the first body P1 and the second body P2 to be folded or unfolded; And a hinge device (A) for unfolding or folding the first body P1 and the second body P2.

The hinge device (A) is coupled to connect the first body (P1) and the second body (P2), and is connected so as to rotate within an unfolded state lying on the same plane and a folded state overlapping with each other.

The hinge device (A) includes a first bracket (2a) coupled to the first body (P1), and a second bracket (2b) coupled to the second body (P2);

First and second main shafts 4a and 4b disposed in parallel and coupled through one end of each of the first and second brackets 2a and 2b; It is fitted to the outer surfaces of the first and second main shafts (4a, 4b), and moves linearly along the first and second main shafts (4a, 4b) when the first and second main shafts (4a, 4b) rotate. Slider 6;

The first and second link connectors 81 and 82 are fitted to the outer surfaces of the first and second main shafts 4a and 4b and connected to the slider 6, and the first and second link connectors 81 and 82 The first and second links (83a, 83b) that are hinged to each other, and the first and second connections that are hinged to the first and second links (83a, 83b) and are attached to the first and second bodies (P1, P2) respectively Including a moving part 8 consisting of the plates 84 and 85,

When the first and second bodies P1 and P2 are folded, the first and second connecting plates 84 and 85 are close to each other, and the first and second link connectors 81 and 82 are connected to the first and second main shafts 4a. ,4b) to move and make them close to each other.

Each of the first body P1 and the second body P2 is made of a rectangular plate material having the same shape and size, and has an area corresponding to half the area of the image portion P3.

The first body P1 and the second body P2 have slide grooves P10 and P20 to which the first and second brackets 2a and 2b are slidably coupled, respectively.

Preferably, slide protrusions P13 and P23 are formed in the slide grooves P10 and P20, and the rail grooves 20a and 20b so that the slide protrusions P13 and P23 are inserted into each of the first and second brackets 2a and 2b. ) Is formed.

In each of the first and second brackets 2a and 2b, bosses 21a and 21b having a through hole are formed on one side, and rail grooves 20a and 20b having a predetermined length are formed on the other side.

As shown in Fig. 4, each of the first and second main shafts 4a and 4b is shaped like a rod having the same length and diameter, and is formed with the same length as the long sides of the first and second bodies P1 and P2, The first and second brackets 2a and 2b are coupled through the bosses 21a and 21b formed at one end of each of the first and second brackets 2a and 2b, and pins 41a and 41b are formed to protrude from the outer circumferential surface and arranged in parallel.

The slider 6 is fitted to the outer surfaces of the first and second main shafts 4a and 4b, respectively, and the first and second tube bodies 61 and 62 having the guide groove 63 formed in the oblique direction, and the first and second main shafts 4a and 4b. Consisting of a connecting rod 64 connected across one end of the pipes 61 and 62 and a bracket 65 connecting the intermediate portions of the first and second pipes 61 and 62 and having a fastening hole 650 do.

First and second shaft pins 41a and 41b are respectively protruding from the first and second main shafts 4a and 4b.

Each of the first and second axis pins 41a and 41b of the first and second main shafts 4a and 4b are coupled to the guide grooves 63 of the first and second pipes 61 and 62, respectively. It guides the rotation of the shafts 4a and 4b.

In the guide groove 63, two guide grooves 63 are formed in a diagonal direction for each of the first and second pipe bodies 61 and 62, but the two guide grooves 63 are formed in opposite directions to be approximately'X'. It is arranged in a ruler shape.

The first and second shaft pins 41a and 41b are inserted into the two guide grooves 63, respectively, so that when the first and second main shafts 4a and 4b rotate, the first and second shaft pins 41a and 41b become guide grooves. It moves along the slope of (63).

In this way, the first and second shaft pins 41a and 41b move along the guide groove 63 to accurately guide the rotational operation of the first and second main shafts 4a and 4b. It is guided to move linearly on the main shaft (4a, 4b).

When the slider 6 moves linearly, the moving part 8 hinged to the link 83 rotates horizontally, vertically or at an inclined angle within a 90° angle due to the inclination angle of the guide groove 63. Eventually, the first and second brackets 2a and 2b may be unfolded or folded or obliquely unfolded.

The moving part (8) is fitted to the outer surface of the first main shaft (4a), the first link connector (81) connected to the slider (6), and the second main shaft (4b) is fitted to the outer surface Formed in the second link connector 82, the first and second links 83a, 83b hinged to the first and second link connectors 81, 82, and the first and second links 83a, 83b It is composed of first and second connecting plates 84 and 85 attached to the first body P1.

The first and second connecting plates 84 and 85 are coupled to the first and second bodies P1 and P2, respectively, and the first and second connecting plates 84 and 85 are respectively on both sides of the first and second links ( 83a, 83b) are connected, and the link 83 is hinged with the first and second link connectors 81 and 82 integrally coupled with the slider 6, thereby rotating the first and second links 83a and 83b on both sides. While doing this, the first and second link connectors 81 and 82 are connected to each other or are separated from each other.

The close operation between the first and second link connectors 81 and 82 on both sides is a state in which the first and second bodies P1 and P2 are folded, as shown in FIG. 6.

On the contrary, the spaced operation between the first and second link connectors 81 and 82 is a state in which the first and second bodies P1 and P2 are unfolded, as shown in FIGS. 7 and 8.

Referring to FIG. 4 again, the first and second brackets 2a and 2b have bosses 21a and 21b formed at one end, respectively, and the first and second main shafts 4a and 4b are formed on the bosses 21a and 21b. ) Is fitted.

A support 24 is provided that is coupled to support the bosses 21a and 21b on both sides of the first and second brackets 2a and 2b, and the first and second axis pins 41a and 41b penetrate through one side of the support 24 A flange 25 having a through hole to be coupled is formed.

As shown in FIG. 6, when the first and second bodies P1 and P2 are folded, the first and second connecting plates 84 and 85 are brought close and the first and second link connectors 81 and 82 are first ,2 The main axes (4a, 4b) must be moved to make them close to each other.

The first and second shaft pins 41a and 41b are fitted to the first and second tubes 61 and 62 of the slider 6, respectively.

Meanwhile, first and second springs 52a and 52b are coupled to the first and second shaft pins 41a and 41b, respectively.

The first and second springs 52a and 52b have one end in close contact with the flange 25 of the support 24 to which the first and second brackets 2a and 2b are coupled, and the other end 1 It is supported by being in close contact with the support plate 53.

The first and second shaft pins 41a and 41b penetrate through the flange 25 and are fitted to the first and second pipe bodies 61 and 62 of the slider 6, respectively.

The gear connection part 5 functions to correct the rotation angles of the first main shaft 4a and the second main shaft 4b so that they are the same.

The gear connection 5 is supported by the first and second springs 52a and 52b and is parallel to the first support plate 53 and the first support plate 53 coupled to the first and second shaft pins 41a and 41b. It is coupled and is interposed between the second support plate 56 coupled to the first and second axis pins (41a, 41b), and the first and second support plates (53, 56), and is coupled to the first and second axis pins (41a, 41b), respectively. It is composed of first and second gears 54a and 54b, and a plurality of interlocking gears 55 that are tooth-coupled with the first and second gears 54a and 54b.

The first and second gears 54a and 54b are pinion gears having the same number of teeth.

The plurality of interlocking gears 55 are pinion gears having a smaller number of teeth than the first and second gears 54a and 54b, and are provided in an even number so that the rotational driving of the first and second gears 54a and 54b are opposite to each other. It becomes possible to change direction so that it can be executed.

Hereinafter, the operation of the present invention will be described.

[Semi-folded state]

As shown in FIG. 7, the first and second bodies P1 and P2 are deployed at intervals of about 45°, and the first and second brackets 2a and 2b are moved in the slide grooves P10 and P20.

The first and second main shafts 4a and 4b rotate together, and the first and second shaft pins 41a and 41b are located in the middle of the guide groove 63.

In addition, the first and second gears 54a and 54b of the gear connection 5 may be rotated together by 45° to be fixed while maintaining the rotation angle.

[Expand operation]

As shown in Figure 8, the first and second bodies (P1, P2) are deployed at 180 ° intervals,

The first and second brackets 2a and 2b move further from the slide grooves P10 and P20 to closely adhere to the ends.

The first and second main shafts 4a and 4b rotate together, and the first and second shaft pins 41a and 41b are located at the ends of the guide groove 63.

In addition, the first and second gears 54a and 54b of the gear connection 5 may be rotated 180° to be fixed while maintaining the rotation angle.

In the accompanying drawings, FIG. 9 is an unfolded perspective view of a foldable display device according to another embodiment, FIG. 10 is a perspective view of a'hinge device' of a foldable display device according to another embodiment as viewed from above, and FIG. FIG. 12 is an exploded perspective view of, FIG. 12 is a perspective view of a'hinge device' of a foldable display device according to another embodiment, viewed from the bottom, FIG. 13 is an exploded perspective view of FIG. 12, and FIG. 14 is a foldable display according to another embodiment A front enlarged view showing an unfolded state of a'hinge device' of a device, FIG. 15 is a perspective view showing an unfolded state of a'hinge device' of a foldable display device according to another embodiment, and FIG. 16 is a foldable display according to another embodiment It is a perspective view showing the folded state of the'hinge device' of the device.

A foldable display device according to another exemplary embodiment includes: a first body P1 and a second body P2 formed in a plate shape having the same shape and arranged symmetrically; An image portion P3 that is attached to the first body P1 and the second body P2 to be folded or unfolded; It is coupled to connect the first body (P1) and the second body (P2), the first body (P1) and the second body (P2) is configured to include a hinge device (A2) for unfolding or folding; .

The hinge device (A2) is coupled to connect the first body (P1) and the second body (P2), and is connected so as to rotate within an unfolded state lying on the same plane and a folded state overlapping with each other.

The hinge device A2 is coupled to the first body P1 and has a first link connector 81 having a coupling hole and a first hinge 200a having a coupling hole 202a attached thereto. There is a first connection plate (3a) having a moving guide (32a) formed with a long hole (322a) horizontally; A second link connector 82 that is coupled to the second body P2 and has a coupling hole, and a second hinge 200b having a coupling hole 202b is attached thereto, and a long hole 322b is formed horizontally at the bottom. A second connection plate 3b having a moving guide 32b formed therein; A first main shaft 4a coupled through the first link connector 81; A second main shaft 4b coupled through the second link connector 82 and disposed in parallel with the first main shaft 4a; Each of the first and second main shafts (4a, 4b) is fitted to the outer surface, and is fitted to the inside of the first and second link connectors (81, 82), and the first and second main shafts (4a, 4b) A slider 6 that moves linearly along with the first and second link connectors 81 and 82 along the first and second main shafts 4a and 4b during rotation of the slider 6; One end is hinged to the first and second link connectors (81, 82), and the other end is hinged to the first and second connecting plates (3a, 3b), and first and second links (83a, 83b); including When the first and second bodies P1 and P2 are folded, the first and second connecting plates 84 and 85 are close to each other, and the first and second link connectors 81 and 82 and the slider 6 are By moving along the first and second main shafts 4a and 4b, the first and second link connectors 81 and 82 are close to each other.

Each of the first and second main shafts (4a, 4b) is in the shape of a rod having the same length and diameter, and is formed to have the same length as the long sides of the first and second bodies (P1, P2), and the first and second brackets (2a, 2b) ) Pins (41a, 41b) are formed to penetrate through the bosses (21a, 21b) formed at each end and protrude from the outer circumferential surface and are arranged in parallel.

The slider 6 is inserted into the first and second link connectors 81 and 82. Preferably, the slider 6 is fitted into the coupling holes 810 and 820 of the first and second link connectors 81 and 82.

11 and 15, the slider 6 is fitted to the outer surfaces of the first and second main shafts 4a and 4b, respectively, and the first and second pipe bodies having guide grooves 63 formed in the diagonal direction (61,62) Wow,

A bracket (65) having a fastening hole (650) connecting the connecting rod 64 connected across one end of the first and second pipes (61, 62) and the intermediate portion of the first and second pipes (61, 62) It consists of including.

First and second shaft pins 41a and 41b are respectively protruding from the first and second main shafts 4a and 4b.

Each of the first and second axis pins 41a and 41b of the first and second main shafts 4a and 4b are coupled to the guide grooves 63 of the first and second pipes 61 and 62, respectively. It guides the rotation of the shafts 4a and 4b.

Each of the first and second pipe bodies 61 and 62 has two guide grooves 63 formed in an oblique direction, but the two guide grooves 63 are formed in opposite directions and are arranged in an approximately'X' shape.

The first and second shaft pins 41a and 41b are inserted into the two guide grooves 63, respectively, so that when the first and second main shafts 4a and 4b rotate, the first and second shaft pins 41a and 41b become guide grooves. It moves along the slope of (63).

In this way, the first and second shaft pins 41a and 41b move along the guide groove 63 to accurately guide the rotational operation of the first and second main shafts 4a and 4b. It is guided to move linearly on the main shaft (4a, 4b).

Since the rotation angle can be determined by the length of the guide groove 63, it is preferable to have a rotation angle of 90 degrees, but if necessary, the rotation angle can be changed by lengthening or shortening the length of the guide groove 63. will be.

When the slider 6 moves linearly on the first and second main shafts 4a, 4b, the moving part 8 hinged with the link 83 is at a 90° angle due to the inclination angle of the guide groove 63 In the end, the first and second brackets 2a and 2b are rotated horizontally, vertically, or at an inclined angle, thereby causing an operation of unfolding or folding of the first and second brackets 2a and 2b, or an operation of extending inclinedly.

11 and 12, the moving part 8 is fitted to the outer surface of the first main shaft 4a and connected to the slider 6, the first link connector 81, and the second main shaft. It includes a second link connector 82 that is fitted to the outer surface of the shaft 4b, and first and second links 83a and 83b that are hinged to the first and second link connectors 81 and 82, respectively.

The first and second links 83a and 83b are hinged to the first connecting plate 3a or the second connecting plate 3b, respectively.

The first and second connecting plates 3a and 3b are coupled to the first and second bodies P1 and P2, respectively (see FIGS. 9 and 15).

Each of the first and second connecting plates 3a and 3b has first and second links 83a and 83b connected to the rear, respectively, and the first and second connecting rings 200a and 200b are respectively mounted on one side (Fig. 11). Reference).

The first and second links 83a and 83b are arranged symmetrically, each of which has one end hinged to the first and second link connectors 81 and 82 coupled to the slider 6, and the other end is connected to the first and second links. It is hinged to the bottom of the plates 3a and 3b.

In the process of folding the first and second links 83a and 83b on both sides, the first and second link connectors 81 and 82 on both sides of the first and second link connectors 81 and 82 may be operated closer to each other, thereby performing a folding operation.

The spaced operation between the first and second link connectors 81 and 82 is in a state in which the first and second bodies P1 and P2 are unfolded, as shown in FIGS. 12 and 15.

Conversely, the proximity operation between the first and second link connectors 81 and 82 on both sides is in a state in which the first and second bodies P1 and P2 are folded, as shown in FIG. 16.

The first and second connecting rings 200a and 200b will be described.

As shown in FIG. 13, the first connection ring 200a has a coupling hole 202a formed at one end, and a guide pin 204a formed at the other side.

The first main shaft 4a is fitted into the coupling hole 202a, and the guide pin 204a is coupled to the long hole 322a of the moving guide 32a.

The second connection ring 200b has a coupling hole 202b formed at one end, a guide pin 204b is formed on the other side, and a second main shaft 4b is fitted in the coupling hole 202b, and a guide pin ( 204b) is coupled to the long hole 322b of the movement guide 32b.

As shown in Fig. 16, when the first and second bodies P1 and P2 are folded, the first and second connecting plates 3a and 3b are brought close to each other, and the first and second link connectors 81, 81a, 82, and 82a ) Moves along the first and second main axes 4a and 4b to get close to each other.

The first and second shaft pins 41a and 41b are fitted to the first and second tubes 61 and 62 of the slider 6, respectively.

Meanwhile, as shown in FIGS. 11 and 13, the first and second springs 52a and 52b are respectively coupled to the first and second shaft pins 41a and 41b.

One end of the first and second springs 52a and 52b is in close contact with the first cam plate 57, and the other end is in close contact with and supported by the closing member 59 of the angle setting unit 7.

The first and second shaft pins 41a, 41b penetrate through the first support plate 53, the first cam plate 57, and the second cam plate 58, and the first and second springs 52a, 52b and the closing member 59 It is fitted and combined with each other.

Meanwhile, the angle setting unit 7 functions to correct the rotation angles of the first main shaft 4a and the second main shaft 4b so that they are the same.

As shown in Fig. 13, the angle setting unit 7 includes a first support plate 53 that is coupled to both sides of the first and second main shafts 4a and 4b, and the first and second main shafts 4a and 4b. ), the first and second gears 54a and 54b, which are respectively coupled to the first support plate 53, and a plurality of interlocking gears 55 which are toothly coupled to the first and second gears 54a and 54b; Both sides are coupled to the first and second main shafts (4a, 4b), and the first cam plate (57) with first cams (572) formed on both sides, and both sides are coupled to the first and second main shafts (4a, 4b) And a second cam plate 58 having second cams 583 respectively formed on both sides thereof and coupled to the first cam plate 57; First and second springs 52a and 52b respectively coupled to the first and second main shafts 4a and 4b and supported by the first cam plate 57; The first and second main shafts (4a, 4b) are respectively coupled to the first and second springs (52a, 52b) supported by the closing member 59; consists of.

The first and second gears 54a and 54b are pinion gears having the same number of teeth.

The interlocking gear 55 is a pinion gear having a smaller number of teeth than the first and second gears 54a and 54b, and the rotational driving of the first and second gears 54a and 54b is performed in a direction opposite to each other by connecting several. It is possible to change the direction so that the rotation speed can be reduced gently.

Hereinafter, the operation of the present invention will be described.

[Expand operation]

As shown in Fig. 15, the first and second bodies P1 and P2 are developed at intervals of 180°,

Each of the guide pins 204a and 204b of the first and second connecting rings 200a and 200b is moved to one end of the long holes 322a and 322b of the movement guides 32a and 32b.

The first and second main shafts (4a, 4b) rotate respectively, and the first and second shaft pins (41a, 41b) move to the end of the guide groove (63) and are positioned to induce a rotation angle of 180°. do.

In addition, after the first and second gears 54a and 54b of the angle setting unit 7 are rotated by 180°, they may be fixed while maintaining the rotated angle.

[Folded state]

As shown in Fig. 16, when the first and second bodies P1 and P2 are folded in parallel,

Each of the guide pins 204a and 204b of the first and second connecting rings 200a and 200b is moved to the other end of the long holes 322a and 322b of the movement guides 32a and 32b.

The first and second brackets 2a and 2b are moved in the slide grooves P10 and P20.

The first and second main shafts 4a and 4b rotate together, and the first and second shaft pins 41a and 41b are located in the middle of the guide groove 63.

In addition, after the first and second gears 54a and 54b of the angle setting unit 7 are rotated by 90°, they may be fixed while maintaining the rotated angle.

Although it has been described in connection with the preferred embodiment, it will be readily recognized by those skilled in the art that various modifications and variations are possible without departing from the gist and scope of the invention, and all such changes and modifications fall within the scope of the appended claims. Is self-explanatory.

P1: first body P2: second body
P3: image part A: hinge device
2a: 1st bracket, 2b: 2nd bracket
4a: 1st main axis 4b: 2nd main axis
6: slider 8: moving part
41a, 41b: pin 52a: first spring
52b: second spring 61: first tube
62: second pipe body 63: guide groove
81: first link connector 82: second link connector
83a: first link 83b: second link
84: first connecting plate 85: second connecting plate

Claims (11)

A first body (P1) and a second body (P2) formed in a plate shape and arranged symmetrically;
An image portion (P3) that is attached to the first body (P1) and the second body (P2) to be folded or unfolded;
A hinge device (A) coupled to connect the first body (P1) and the second body (P2) to open or fold the first body (P1) and the second body (P2); Including,
The hinge device (A) is
A first bracket (2a) coupled to the first body (P1) and a second bracket (2b) coupled to the second body (P2);
First and second main shafts (4a, 4b) which are connected through the first and second brackets (2a, 2b) and arranged in parallel;
They are fitted to the outer surfaces of the first and second main shafts 4a and 4b, respectively, and when the first and second main shafts 4a and 4b rotate, a straight line along the first and second main shafts 4a and 4b A slider 6 to move;
The first and second link connectors 81 and 82 are fitted to the outer surfaces of the first and second main shafts 4a and 4b and connected to the slider 6, and the first and second link connectors 81 and 82 ), the first and second links (83a, 83b), which are hinged to each other, and the first and second links (83a, 83b), which are hinged to the first and second links (83a, 83b) and attached to the first and second bodies (P1, P2) respectively. Including; moving part 8 consisting of the connecting plate (84,85),
When the first and second bodies P1 and P2 are folded, the first and second connecting plates 84 and 85 are close to each other, and the first and second link connectors 81 and 82 are connected to the first and second main shafts. 4a, 4b) to move and get close to each other,
The slider 6 is
First and second pipe bodies (61, 62) that are fitted to the outer surfaces of the first and second main shafts (4a, 4b) and have guide grooves (63) formed in an oblique direction;
First and second shaft pins 41a and 41b formed on each of the first and second main shafts 4a and 4b;
A connecting rod 64 connected across one end of the first and second pipes 61 and 62;
Including; a bracket (65) having a fastening hole (650) and connecting the intermediate portions of the first and second pipes (61, 62),
The first and second axis pins (41a, 41b) are foldable display device, characterized in that coupled to the guide groove (63) of each of the first and second pipes (61, 62). delete The method of claim 1,
First and second springs 52a and 52b coupled to the first and second shaft pins 41a and 41b, respectively;
A support 24 to which the first and second brackets 2a and 2b are coupled;
Including; a flange 25 formed on the support 24,
The first and second springs (52a, 52b), one end is in close contact with the flange (25) of the support (24), respectively, and the other end is supported in close contact with the gear connection (5). The method of claim 3,
The gear connection 5 is
A first support plate 53 supported by the first and second springs 52a and 52b and coupled to the first and second shaft pins 41a and 41b;
A second support plate 56 coupled in parallel with the first support plate 53 and coupled to the first and second shaft pins 41a and 41b;
First and second gears 54a and 54b interposed between the first support plate 53 and the second support plate 56 and coupled to the first and second shaft pins 41a and 41b, respectively;
A plurality of interlocking gears (55) toothedly coupled to the first and second gears (54a, 54b);
Foldable display device comprising a. The method of claim 1,
The first body (P1) or the second body (P2) is formed with a slide groove (P10, P20) to which the first and second brackets (2a, 2b) are slidably coupled, respectively,
Slide protrusions P13 and P23 are formed in the slide grooves P10 and P20,
A foldable display device, characterized in that rail grooves 20a and 20b are formed in each of the first and second brackets 2a and 2b so that slide protrusions P13 and P23 are inserted. A first body (P1) and a second body (P2) formed in a plate shape and arranged symmetrically;
An image portion (P3) that is attached to the first body (P1) and the second body (P2) to be folded or unfolded;
Including; a hinge device (A2) coupled to connect the first body (P1) and the second body (P2) to open or fold the first body (P1) and the second body (P2); and
The hinge device A2,
A first link connector 81 coupled to the first body P1 and having a coupling hole 810 and a first hinge 200a having a coupling hole 202a are attached and formed, and the lower portion is horizontally A first connection plate (3a) having a movement guide (32a) in which a long hole (322a) is formed;
A second link connector 82 coupled to the second body P2 and having a coupling hole 820 and a second hinge 200b having a coupling hole 202b are attached and formed horizontally at the bottom. A second connection plate (3b) having a movement guide (32b) having a long hole (322b);
A first main shaft (4a) coupled through the first link connector (81);
A second main shaft (4b) coupled through the second link connector (82) and disposed in parallel with the first main shaft (4a);
The first main shaft (4a), the second main shaft (4b) is fitted to the outer surface of each, the first and second link connector (81, 82) is fitted to the inside, the first main shaft (4a) ), a slider 6 that moves linearly along the first and second link connectors 81 and 82 along the first and second main shafts 4a and 4b when the second main shaft 4b rotates ;
One end is hinged to the first link connector 81 and the second link connector 82, and the other end is hinged to the first and second link plates 3a and 3b. ); to include,
When the first body (P1) and the second body (P2) are folded, the first connection plate (3a) and the second connection plate (3b) are close to each other, and the first and second link connectors (81,82) and The slider 6 moves along the first and second main shafts 4a and 4b so that the first and second link connectors 81 and 82 are close to each other,
The slider 6 is
First and second pipe bodies (61, 62) that are fitted to the outer surfaces of the first and second main shafts (4a) and the second main shaft (4b) and have guide grooves (63) formed in an oblique direction;
A connecting rod 64 connected to the first and second pipes 61 and 62;
Including; a bracket 65 that connects the first and second pipes 61 and 62 and has a fastening hole 650,
First and second shaft pins 41a and 41b are respectively protruding from the first main shaft 4a and the second main shaft 4b,
The first and second axis pins (41a, 41b) are foldable display device, characterized in that coupled to the guide groove (63) of each of the first and second pipes (61, 62). delete The method of claim 6,
Each of the first and second connecting plates 3a and 3b,
The first and second links 83a and 83b are connected to both sides, and a first connection ring 200a and a second connection ring 200b are respectively mounted,
Each of the first and second links 83a and 83b is hingedly connected to the first link connector 81 and the second link connector 82, and is hinged to the first connection plate 3a and the second connection plate 3b. Foldable display device, characterized in that combined. The method of claim 8,
The first connection ring (200a) is formed with a coupling hole (202a) into which the first main shaft (4a) is fitted and a guide pin (204a) coupled to the long hole (322a) of the movement guide (32a),
The second connection ring 200b has a coupling hole 202b into which the second main shaft 4b is fitted, and a guide pin 204b coupled to the long hole 322b of the moving guide 32b is formed. Foldable display device, characterized in that. The method of claim 6,
And an angle setting unit (7) for correcting rotation angles of the first main shaft (4a) and the second main shaft (4b). The method of claim 10,
The angle setting unit 7 is
A first support plate 53 having both sides coupled to the first main shaft 4a and the second main shaft 4b,
First and second gears 54a and 54b that are respectively coupled to the first and second main shafts 4a and 4b and are in close contact with the first support plate 53, and the first and second gears 54a and 54b. ) And a plurality of interlocking gears 55 that are tooth-coupled;
A first cam plate 57 coupled to the first main shaft 4a and the second main shaft 4b and having first cams 572 formed on both sides thereof,
A second cam plate 58 coupled to the first main shaft 4a and the second main shaft 4b, having second cams 583 formed on both sides thereof, and being coupled to the first cam plate 57;
First and second springs 52a and 52b coupled to the first main shaft 4a and the second main shaft 4b and supported by the first cam plate 57;
A closing member 59 coupled to the first and second main shafts 4a and 4b and supported by the first and second springs 52a and 52b;
Foldable display device comprising a.

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