WO2023234494A1 - Hinge device for foldable device - Google Patents

Hinge device for foldable device Download PDF

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Publication number
WO2023234494A1
WO2023234494A1 PCT/KR2022/018309 KR2022018309W WO2023234494A1 WO 2023234494 A1 WO2023234494 A1 WO 2023234494A1 KR 2022018309 W KR2022018309 W KR 2022018309W WO 2023234494 A1 WO2023234494 A1 WO 2023234494A1
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WO
WIPO (PCT)
Prior art keywords
link
bending
foldable
hinge
hinge device
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PCT/KR2022/018309
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French (fr)
Korean (ko)
Inventor
윤태중
이정현
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윤태중
이정현
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Application filed by 윤태중, 이정현 filed Critical 윤태중
Publication of WO2023234494A1 publication Critical patent/WO2023234494A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements

Definitions

  • a foldable device is a structure that folds and unfolds by applying a flexible display.
  • a hinge that can be folded is provided in the center of the foldable device to maintain the curvature of the folded area to the maximum when folded. It is about a hinge device that can stably support the display while securing free space and maintaining a flat state when unfolded.
  • a foldable device is basically a device with a flexible display panel. Instead of the display panel being formed on a hard substrate such as a glass substrate like conventional LCDs and OELDs, the display panel is formed on a flexible substrate so that images can be displayed even when bent. It is a device that can
  • the conventional FPD does not basically assume folding, so there is no folding structure.
  • An example of a typical hinge is a hinge. If a hinge that simply folds or unfolds is applied directly to a flexible substrate such as a foldable display, the radius of curvature when folded is too small, causing damage to the display of the foldable device. There is a problem that cannot be applied.
  • Patent No. 855 includes a flexible panel as a first body, a second body, a first support, and a second body. It is supported through two supports, and the first body and the second body are foldable and connected through a hinge member. When folded, the radius of curvature of the flexible panel is maintained to a certain extent, and when unfolded, the first support and second body are connected to each other in a foldable manner.
  • a hinge device that supports a display through two supports is disclosed.
  • first body and the second body are coupled through a separate hinge member with two rotation axes, and when folded, the radius of curvature of the flexible display extends from the first and second bodies to the first and second supports. Since it is formed within the space created, there is a limit to increasing the radius of curvature of the display when folded. In addition, since there is a gap at the part where the first support and the second support meet, when folding/unfolding is repeated, fold marks are bound to occur at the folded part of the flexible panel, and when unfolded, it is impossible to form a perfectly flat panel. There is a problem that cannot be solved.
  • the operation is complicated and there are multiple rotation axes, so there is a possibility that the left and right bodies of the hinge device operate separately. Additionally, in order to prevent this problem, a separate synchronization configuration is required, and durability is reduced as the first and second bodies rotate to their respective rotation centers.
  • the flexible display When unfolding, the flexible display can be supported on a single plane while maximizing the free space when folded, preventing damage to the flexible display, and folding with minimal configuration.
  • the display can be stably supported on a single plane when unfolding and in the free space, the first and second devices can be rotated symmetrically without separate synchronization configuration, and the bending part can be structurally folded.
  • the aim is to provide a hinge device for a foldable device that can form the maximum radius of curvature and prevent foreign substances from entering during the folding or unfolding process.
  • the hinge device for a foldable device of the present invention is a hinge device provided at the folding/unfolding portion of a foldable device including a first device and a second device, the hinge device of the first device A first connection part including a first link part pivotably connected to one end of the second device and a second link part foldably connected to the first link part, one end of the second device and the first device A second connection portion including a third link portion pivotably connected to one end of the third link portion and a fourth link portion foldably connected to the third link portion, is provided on the upper portion of the first connection portion and the second connection portion, It includes a bending part fixed to the first coupling part of the first device and the second coupling part of the second device, wherein the first link part and the third link part are arranged to engage with each other between the first device and the second device, and are configured to be unfolded. It is characterized in that it forms a single side together with the bending portion to support the display included in the foldable device.
  • a first bending hole is formed in the first link portion at the portion where the third link portion is connected to the first device, and a second bending hole is formed in the third link portion at the portion where the first link portion is connected to the second device. It is characterized by being formed.
  • first bending hole and the second bending hole are characterized in that they have a curved shape similar to the rotation trajectory of the first link part and the third link part.
  • first reverse rotation prevention part extending below the second link part is formed on the first link part
  • second reverse rotation prevention part extending below the fourth link part is formed on the third link part
  • the first reverse rotation prevention unit and the second reverse rotation prevention unit are characterized in that they prevent the second link unit and the fourth link unit from rotating clockwise or counterclockwise after being unfolded.
  • the second link portion and the fourth link portion are characterized in that the thickness becomes smaller as the distance from the first link portion and the third link portion increases.
  • the bending part is formed as an integrated piece of flexible material, extends to both ends of the second link part and the fourth link part, and is fixed to the first coupling part and the second coupling part.
  • the bending part is composed of a first bending piece located on the first connection side and a second bending piece located on the second connection side, and the first bending piece and the second bending piece are between the first device and the second device. It is characterized in that it is coupled in a concavo-convex shape.
  • a reverse bending prevention part having a preset depth and width is provided on the upper part of the bending part so that the length of the upper surface of the bending part is extended when folded, and a protrusion that abuts each other is formed on the upper part of the reverse bending preventing part when unfolding. It is characterized by
  • first coupling portion and the second coupling portion further include a bending angle guiding portion extending toward the first connecting portion and the second connecting portion and having a preset curved surface to guide the curvature of the bending portion during folding.
  • a curvature control part in the form of a groove having a preset width is provided at the lower part of the bending part to control the curvature of the bending part when folding.
  • the width and depth of the curvature control part are characterized in that they are formed differently depending on the curvature according to the position of the bending part.
  • the flexible panel forms a maximum radius of curvature when the foldable device is folded and can be stably supported while maintaining a perfect single plane when unfolded.
  • both devices of the foldable device can be rotated in a linked state without separate configuration for synchronization.
  • the inflow of foreign substances into the rear of the display can be fundamentally blocked through the hinge device during the folding or unfolding process.
  • FIG. 1 is a perspective view of a hinge device for a foldable device according to an embodiment of the present invention
  • Figure 2 is an exploded view of a hinge device for a foldable device according to an embodiment of the present invention
  • Figure 3 is a cross-sectional view of the hinge device for a foldable device of the present invention.
  • Figure 4 is a cross-sectional view of the hinge device for a foldable device of the present invention when folded
  • 5A and 5B are enlarged cross-sectional views of the bending portion of the hinge device for a foldable device of the present invention when folding/unfolding;
  • Figure 6 is a cross-sectional view with a bending angle guiding part added to the hinge device for a foldable device of the present invention
  • Figure 7 is a plan view showing an embodiment in which the bending part is divided into two parts in the hinge device for a foldable device of the present invention.
  • the hinge device for a foldable device of the present invention is a hinge device provided at the folding/unfolding portion of a foldable device including a first device and a second device, the hinge device of the first device A first connection part including a first link part pivotably connected to one end of the second device and a second link part foldably connected to the first link part, one end of the second device and the first device A second connection portion including a third link portion pivotably connected to one end of the third link portion and a fourth link portion foldably connected to the third link portion, is provided on the upper portion of the first connection portion and the second connection portion, It includes a bending part fixed to the first coupling part of the first device and the second coupling part of the second device, wherein the first link part and the third link part are arranged to engage with each other between the first device and the second device, and are configured to be unfolded. It is characterized in that it forms a single side together with the bending portion to support the display included in the foldable device.
  • Figure 1 is a perspective view of a hinge device for a foldable device according to an embodiment of the present invention
  • Figure 2 is an exploded view of a hinge device for a foldable device according to an embodiment of the present invention
  • Figure 3 is a foldable device of the present invention. It is a cross-sectional view of the hinge device for a device
  • Figure 4 is a cross-sectional view when the hinge device for a foldable device of the present invention is folded
  • Figures 5a and 5b are enlarged cross-sectional views of the bending portion of the hinge device for a foldable device of the present invention when folded/unfolded.
  • Figure 6 is a cross-sectional view with the bending angle guiding part added in the hinge device for a foldable device of the present invention
  • Figure 7 is a plan view showing an embodiment in which the bending part is divided into two parts in the hinge device for a foldable device of the present invention.
  • a foldable device includes a flexible display and must be supported so that the display remains flat when unfolded, and free space must be provided to maximize the curvature of the folded portion so that the display does not become sharp when folded. There is a need to secure it.
  • the conventional hinge device does not have a support structure in the center when unfolding, so wrinkles occur in the flexible display and there is a limit to maintaining the curvature of the display to the maximum when folding.
  • the hinge device configured in a complex manner, but the left and right bodies are coupled to the hinge device around the hinge device, so the left and right bodies move separately or a separate configuration is required to synchronize the rotation of the left and right bodies, so the configuration of the hinge device is complicated. There is a problem with termination.
  • the hinge device for a foldable device of the present invention is intended to solve this problem, and is designed to provide folding/unfolding of a foldable device including a first device 10 and a second device 20 provided on both sides around the folding area.
  • the hinge device provided in the portion where the A first connection part 100 including a second link part 120 that can be connected, and a third link part pivotably connected to one end of the second device 20 and one end of the first device 10 ( 210) and a second connection part 200 including a fourth link part 220 foldably connected to the third link part 210, and on the upper part of the first connection part 100 and the second connection part 200.
  • the first connection part 100 of the present invention has a certain range in the first pivot connection part 130 provided on one side of the first device 10 and the second pivot connection part 230 provided on one side of the second device 20. It includes a first link part 110 rotatably connected within the first link part 110 and a second link part 120 foldably connected to one end of the first link part 110 through a first link connection part 140. . Similarly, the second connection portion 200 is rotatably connected to the second pivot connection portion 230 provided in the second device 20 and the first pivot connection portion 130 provided in the first device 10 within a certain range. It includes a third link part 210 and a fourth link part 220 that is foldably connected to one end of the third link part 210 through a second link connection part 240.
  • each connection part is composed of two link parts, but it may be composed of three or more as long as durability and a flat support structure when unfolded can be secured.
  • the first link unit 110 included in the first connection unit 100 and the third link unit 210 included in the second connection unit 200 of the present invention are the first device 10 and the second device 20, respectively. ) is prepared over a period of time. Therefore, the first link unit 110 and the third link unit 210 overlap in an engaged shape between the first device 10 and the second device 20, and the overlapped portion forms a single surface, thereby forming the display 30 ) can be supported without any gaps.
  • the first link portion 110 of the present invention rotates on the first pivot connection portion 130 provided on one side of the first device 10 and the second pivot connection portion 230 provided on one side of the second device 20. Possibly connected.
  • the third link portion 210 is also rotatably connected to the second pivot connection portion 230 and the first pivot connection portion 130. According to this arrangement, as described above, the first link unit 110 and the third link unit 210 are arranged to be engaged with each other between the first device 10 and the second device 20. Both the first link part 110 and the third link part 210 are coupled to the first pivot connection part 130 and the second pivot connection part 230, and since they are engaged with each other, the third link part 210 is the first link part 210.
  • the portion coupled to the pivot connection portion 130 is located within the first link portion 110. Therefore, in order for the first link part 110 to rotate during the folding/unfolding process, a first bending hole 160 is provided in the first link part 110, and the location and shape of the first bending hole 160 are similar to those of the third. It is preferable that the link part 210 has a shape that includes the position where the link part 210 is coupled to the first pivot connection part 130 and the rotation trajectory of the first link part 110. Similarly, the third link part 210 is provided with a second bending hole 260 at the area where the first link part 110 is coupled to the second pivot connection part 230. In FIG.
  • connection between the first link unit 110 and the first device 10 and the second device 20 is indicated in red
  • connection between the third link unit 210 and the second device 20 is indicated in blue.
  • the coupling positions of the first link part 110 and the second link part 210 which are coupled to the first pivot connection part 130 and the second pivot connection part 230, are located parallel to each other in the vertical direction, the thickness of the device, the first Of course, the arrangement of the coupling positions may vary depending on various factors such as the separation distance between the device 10 and the second device 20 and the shapes of the first and second link parts 110 and 210.
  • the first bending hole 160 and the second bending hole 260 are preferably provided in a curved shape according to the rotation trajectory because the first link part 110 and the third link part 210 must rotate smoothly.
  • the first and second bending holes 160 and 260 can be formed as one large hole containing a rotation trajectory, but in terms of improving the durability of the hinge device, it is preferable to provide a curved shape that matches the rotation trajectory.
  • the second link part 120 and the fourth link part 220 are the first link connection part 140 and the second link connection part 240, which are one end of the first link part 110 and the third link part 210, respectively. is combined with In the case of the second link unit 120, it rotates clockwise during the folding process, and the fourth link unit 220 rotates counterclockwise. In order to firmly support the display 30 located at the top in an unfolded situation, it is necessary to prevent the second link part 120 from rotating counterclockwise and the fourth link part 220 from rotating clockwise. there is. For this purpose, it is desirable to provide a first reverse rotation prevention part 150 in the first link part 110 and a second reverse rotation prevention part 250 in the third link part 210.
  • the shape of the other ends of the second link part 120 and the fourth link part 220 becomes thinner toward the end, which means that the bending part 300 is located at the top and a certain thickness is required at both ends of the bending part 300.
  • the reverse bending prevention unit 330 and the curvature control unit 340 are provided to improve durability by gently changing the thickness of the bending unit 300. Referring to part A of FIG. 3, there is a difference between the thickness of the area where the reverse bending prevention part 330 and the curvature control part 340 are provided and the thickness of the upper part of the first connection part 100 and the second connection part 200. It can be seen that the thickness change is gradual along the shapes of the link portion 120 and the fourth link portion 220.
  • the second and fourth link parts 120 and 220 adhere to the bottom of the first and second devices 10 and 20 when folded and maximize the radius of curvature of the display 30. For this reason, it is desirable to adjust the shape of the other end according to the rotation angle.
  • the bending portion 300 of the present invention is coupled to the first coupling portion 15 of the first device 10 and the second coupling portion 25 of the second device 20 to connect the first coupling portion 100 and the second coupling portion. It is provided on the upper part of the connection part 200 and is assumed to be bent during folding and unfolding, so it is preferable to make it of a flexible material.
  • the bending part 300 supports the display 30, and when unfolded, the upper surface forms a single flat surface.
  • Reverse bending prevention parts 330 are provided at the top of both ends of the bending part 300. The reverse bending prevention parts 330 prevent the bending part 300 from falling downward when unfolding and at the same time prevent the bending part 300 from falling downward when folding.
  • the display 30 prevents the display 30 from being wrinkled according to changes in the internal space of the first and second devices 10 and 20. That is, when unfolding, the protrusions 335 provided on the upper part of the reverse bending prevention part 330 come into contact with each other to prevent them from moving downward, and when folded, they are formed to open as shown in FIGS. 4 and 5 to form a bending portion ( 300) Extend the length of the upper part. In order to form a natural curved surface of the bending prevention portion 330 during folding, it is preferable to form a bending angle guiding portion 50 having a certain curved surface in the first coupling portion 15 and the second coupling portion 25.
  • the curvature control unit 340 is provided below both ends of the bending unit 300 and has a preset width.
  • the curvature control unit 340 serves to control the curvature formed by the bending unit 300 during folding. . That is, the width of the curvature control unit 340 is wide in the part where the curvature change of the bending part 300 is large, and the width of the curvature control part 340 is narrow in the part where the curvature change is small.
  • the bending portion 300 can be adjusted to be bent into a desired shape, which has the advantage of allowing more efficient use of the internal space of the device when folded.
  • the bending portion 300 may be formed as an integrated piece, but may be divided into two parts, a first bending piece 310 and a second bending piece 320, as shown in FIG. 7.

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Abstract

The present invention relates to a hinge device for a foldable device, and more specifically, to a hinge device for a foldable device which is capable of: rotating a first device and a second device constituting the foldable device about a single axis of rotation; supporting a flexible display on a single plane when unfolded and maximizing free space when folded, so as to prevent damage to the flexible display; with a minimal configuration, providing the free space when folded and stably supporting the display on the single plane when unfolded; symmetrically rotating the first device and the second device without a separate component for synchronization; and fundamentally blocking inflow of foreign substances during a folding or unfolding process.

Description

폴더블 디바이스용 힌지장치Hinge device for foldable devices
본 발명은 폴더블 디바이스에서 접히거나 펼쳐질 부위에 장착되는 힌지장치에 대한 것이다. 보다 상세하게는 폴더블 디바이스는 플랙서블한 디스플레이를 적용하여 폴딩, 언폴딩되는 구조로서 폴더블 디바이스의 중앙부위에 접혀질 수 있는 힌지가 마련되는데 폴딩되었을 때 폴딩 부위의 곡률을 최대로 유지하기 위한 여유공간을 확보하면서 언폴딩되었을 때 편평한 상태를 유지하면서 디스플레이를 안정적으로 지지할 수 있는 힌지장치에 대한 것이다.The present invention relates to a hinge device mounted on a folded or unfolded portion of a foldable device. More specifically, a foldable device is a structure that folds and unfolds by applying a flexible display. A hinge that can be folded is provided in the center of the foldable device to maintain the curvature of the folded area to the maximum when folded. It is about a hinge device that can stably support the display while securing free space and maintaining a flat state when unfolded.
최근 커브드 디스플레이가 보급되는 등 종래 평판 디스플레이에서 곡면을 갖는 디스플레이가 출시되고 있다. 이에 더해 폴더블 디바이스와 같이 접거나 펼쳐질 수 있는 디스플레이가 양산되고 있다.Recently, curved displays have become popular, and displays with a curved surface are being released instead of conventional flat displays. In addition, displays that can be folded or unfolded like foldable devices are being mass-produced.
폴더블 디바이스는 기본적으로 플렉서블 디스플레이 패널이 적용된 기기로서 종래 LCD, OELD와 같이 유리 기판과 같이 딱딱한 기판에 디스플레이 패널이 형성되는 것이 아니라 휘어질 수 있는 기판에 회로소자를 형성하여 휘어져도 화상을 표시할 수 있는 기기이다.A foldable device is basically a device with a flexible display panel. Instead of the display panel being formed on a hard substrate such as a glass substrate like conventional LCDs and OELDs, the display panel is formed on a flexible substrate so that images can be displayed even when bent. It is a device that can
이러한 폴더블 디바이스는 휘어지거나 접혀지는 기기이므로 접혀지는 부위가 그렇지 않은 부분에 비해 파손될 가능성이 높고 언폴딩 시 즉, 펼쳐졌을 때 FPD와 같은 평탄도를 유지할 수 있어야 한다. Since these foldable devices are devices that bend or fold, the folded part is more likely to be damaged than the non-folded part, and when unfolded, it must be able to maintain the same flatness as an FPD.
하지만 종래의 FPD는 기본적으로 폴딩을 상정하지 않아 접히는 구조가 없다. 통상의 힌지로는 경첩을 예로들 수 있는데 단순히 접히거나 펼쳐지는 힌지를 폴더블 디스플레이와 같이 유연한 기판에 직접 적용하면 접혔을 때 곡률반지름이 너무 작아 폴더블 디바이스의 디스플레이가 파손되는 등 폴더블 디바이스에 적용할 수 없는 문제가 있다.However, the conventional FPD does not basically assume folding, so there is no folding structure. An example of a typical hinge is a hinge. If a hinge that simply folds or unfolds is applied directly to a flexible substrate such as a foldable display, the radius of curvature when folded is too small, causing damage to the display of the foldable device. There is a problem that cannot be applied.
이러한 문제점을 해결하기 위해 종래 폴더블 디스플레이 장치를 위한 힌지장치가 대한민국 등록특허 10-1875855호에 개시되어 있고 855호 특허에는 가요성이 있는 패널을 제1몸체, 제2몸체와 제1지지대 및 제2지지대를 통해 지지하고 제1몸체와 제2몸체는 힌지부재를 통해 접철이 가능하게 연결되는 구조로서 접혀졌을 때 가요성이 있는 패널의 곡률반지름을 어느 정도 유지하면서 펼쳐졌을 때 제1지지대 및 제2지지대를 통해 디스플레이를 지지하는 힌지장치가 개시되어 있다. 하지만 제1몸체와 제2몸체가 두 개의 회전축을 가진 별개의 힌지부재를 통해 결합되고, 접혀졌을 때 플랙서블 디스플레이의 곡률반지름이 제1몸체와 제2몸체로부터 연장된 제1지지대와 제2지지대가 만드는 공간 내에서 형성되므로 폴딩 시 디스플레이의 곡률반지름을 크게 하는데 한계가 있다. 또한, 제1지지대와 제2지지대가 맞닿는 부분에 이격이 발생하기 때문에 폴딩/언폴딩이 반복되면 가요성이 있는 패널의 접히는 부위에 접힘 자국이 발생할 수 밖에 없고 언폴딩 시 완벽한 평면 패널을 형성할 수 없는 문제가 있다. 또한, 힌지장치에 포함되는 필수적인 구성이 많아 동작이 복잡하고 회전축이 다수이므로 힌지장치 좌우의 몸체가 따로 동작할 가능성이 있다. 또한, 이러한 문제를 방지하기 위해 별도로 동기화를 위한 구성이 필요하며 제1, 제2몸체가 각각의 회전중심으로 회동됨에 따라 내구성이 떨어지는 문제점이 있다. To solve this problem, a hinge device for a conventional foldable display device is disclosed in Korean Patent No. 10-1875855, and Patent No. 855 includes a flexible panel as a first body, a second body, a first support, and a second body. It is supported through two supports, and the first body and the second body are foldable and connected through a hinge member. When folded, the radius of curvature of the flexible panel is maintained to a certain extent, and when unfolded, the first support and second body are connected to each other in a foldable manner. A hinge device that supports a display through two supports is disclosed. However, the first body and the second body are coupled through a separate hinge member with two rotation axes, and when folded, the radius of curvature of the flexible display extends from the first and second bodies to the first and second supports. Since it is formed within the space created, there is a limit to increasing the radius of curvature of the display when folded. In addition, since there is a gap at the part where the first support and the second support meet, when folding/unfolding is repeated, fold marks are bound to occur at the folded part of the flexible panel, and when unfolded, it is impossible to form a perfectly flat panel. There is a problem that cannot be solved. In addition, since there are many essential components included in the hinge device, the operation is complicated and there are multiple rotation axes, so there is a possibility that the left and right bodies of the hinge device operate separately. Additionally, in order to prevent this problem, a separate synchronization configuration is required, and durability is reduced as the first and second bodies rotate to their respective rotation centers.
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 언폴딩 시 플랙서블 디스플레이를 단일평면에서 지지하면서 폴딩 시 여유 공간을 극대화할 수 있어 플랙서블 디스플레이의 파손을 방지할 수 있으며, 최소한의 구성으로 폴딩 시 여유공간과 언폴딩 시 단일평면으로 디스플레이를 안정적으로 지지할 수 있으며, 별도의 동기화를 위한 구성없이도 제1디바이스와 제2디바이스를 대칭적으로 회동시킬 수 있으며, 벤딩부의 구성을 통해 구조적으로 폴딩 시 최대 곡률반지름을 형성할 수 있고, 폴딩 또는 언폴딩되는 과정에서 이물이 유입되는 것을 원천 차단할 수 있는 폴더블 디바이스용 힌지장치를 제공함에 있다.The present invention is intended to solve the problems described above. When unfolding, the flexible display can be supported on a single plane while maximizing the free space when folded, preventing damage to the flexible display, and folding with minimal configuration. The display can be stably supported on a single plane when unfolding and in the free space, the first and second devices can be rotated symmetrically without separate synchronization configuration, and the bending part can be structurally folded. The aim is to provide a hinge device for a foldable device that can form the maximum radius of curvature and prevent foreign substances from entering during the folding or unfolding process.
상기와 같은 목적을 달성하기 위해 본 발명의 폴더블 디바이스용 힌지장치는 제1디바이스와 제2디바이스를 포함하는 폴더블 디바이스의 폴딩/언폴딩 부위에 마련되는 힌지장치에 있어서, 상기 제1디바이스의 일단과 제2디바이스의 일단에 피봇 가능하게 연결되는 제1링크부와 상기 제1링크부와 접철 가능하게 연결되는 제2링크부를 포함하는 제1연결부와, 상기 제2디바이스의 일단과 제1디바이스의 일단에 피봇 가능하게 연결되는 제3링크부와 상기 제3링크부와 접철 가능하게 연결되는 제4링크부를 포함하는 제2연결부와, 상기 제1연결부와 제2연결부의 상부에 마련되고, 제1디바이스의 제1결합부와 제2디바이스의 제2결합부에 고정되는 벤딩부를 포함하되, 상기 제1링크부와 제3링크부는 제1디바이스와 제2디바이스 사이에서 서로 맞물리게 배치되며, 언폴딩 시 벤딩부와 함께 단일면을 형성하여 상기 폴더블 디바이스에 포함된 디스플레이를 지지하는 것을 특징으로 한다.In order to achieve the above object, the hinge device for a foldable device of the present invention is a hinge device provided at the folding/unfolding portion of a foldable device including a first device and a second device, the hinge device of the first device A first connection part including a first link part pivotably connected to one end of the second device and a second link part foldably connected to the first link part, one end of the second device and the first device A second connection portion including a third link portion pivotably connected to one end of the third link portion and a fourth link portion foldably connected to the third link portion, is provided on the upper portion of the first connection portion and the second connection portion, It includes a bending part fixed to the first coupling part of the first device and the second coupling part of the second device, wherein the first link part and the third link part are arranged to engage with each other between the first device and the second device, and are configured to be unfolded. It is characterized in that it forms a single side together with the bending portion to support the display included in the foldable device.
또한, 상기 제1링크부에는 제3링크부가 제1디바이스와 연결되는 부위에 제1벤딩홀이 형성되고, 제3링크부에는 제1링크부가 제2디바이스와 연결되는 부위에 제2벤딩홀이 형성되는 것을 특징으로 한다.In addition, a first bending hole is formed in the first link portion at the portion where the third link portion is connected to the first device, and a second bending hole is formed in the third link portion at the portion where the first link portion is connected to the second device. It is characterized by being formed.
또한, 상기 제1벤딩홀과 제2벤딩홀은 상기 제1링크부와 제3링크부의 회전 궤적과 같은 형태의 곡선 형상인 것을 특징으로 한다.In addition, the first bending hole and the second bending hole are characterized in that they have a curved shape similar to the rotation trajectory of the first link part and the third link part.
또한, 상기 제1링크부에는 상기 제2링크부의 하부로 연장된 제1역회전방지부가 형성되고, 상기 제3링크부에는 상기 제4링크부의 하부로 연장된 제2역회전방지부가 형성되고, 상기 제1역회전방지부 및 제2역회전방지부는 언폴딩된 후 상기 제2링크부 및 제4링크부가 시계방향 또는 반시계방향으로 회전하는 것을 방지하는 것을 특징으로 한다.In addition, a first reverse rotation prevention part extending below the second link part is formed on the first link part, and a second reverse rotation prevention part extending below the fourth link part is formed on the third link part, The first reverse rotation prevention unit and the second reverse rotation prevention unit are characterized in that they prevent the second link unit and the fourth link unit from rotating clockwise or counterclockwise after being unfolded.
또한, 상기 제2링크부와 제4링크부는 상기 제1링크부 및 제3링크부로부터 멀어질수록 두께가 작아지는 형상인 것을 특징으로 한다.In addition, the second link portion and the fourth link portion are characterized in that the thickness becomes smaller as the distance from the first link portion and the third link portion increases.
또한, 상기 벤딩부는 가요성 재질의 일체형으로 형성되고, 상기 제2링크부와 제4링크부 끝단 양쪽으로 연장되어 제1결합부 및 제2결합부에 고정되는 것을 특징으로 한다.In addition, the bending part is formed as an integrated piece of flexible material, extends to both ends of the second link part and the fourth link part, and is fixed to the first coupling part and the second coupling part.
또한, 상기 벤딩부는 제1연결부 쪽에 위치하는 제1벤딩편과 제2연결부 쪽에 위치하는 제2벤딩편으로 구성되고, 상기 제1벤딩편과 제2벤딩편은 상기 제1디바이스와 제2디바이스 사이에서 요철형상으로 맞물리게 결합되는 것을 특징으로 한다.In addition, the bending part is composed of a first bending piece located on the first connection side and a second bending piece located on the second connection side, and the first bending piece and the second bending piece are between the first device and the second device. It is characterized in that it is coupled in a concavo-convex shape.
또한, 상기 벤딩부의 상부에는 폴딩 시 상기 벤딩부의 상부면의 길이가 연장되도록 미리 설정된 깊이와 폭을 갖는 역벤딩 방지부가 마련되고, 상기 역벤딩 방지부의 상부에는 언폴딩 시 서로 맞닿는 돌출부가 형성되는 것을 특징으로 한다.In addition, a reverse bending prevention part having a preset depth and width is provided on the upper part of the bending part so that the length of the upper surface of the bending part is extended when folded, and a protrusion that abuts each other is formed on the upper part of the reverse bending preventing part when unfolding. It is characterized by
또한, 상기 제1결합부와 제2결합부는 폴딩 시 상기 벤딩부의 곡률을 유도하기 위해 제1연결부와 제2연결부 쪽으로 연장형성되면서 미리 설정된 곡면을 갖는 벤딩각 가이딩부를 더 포함한다.In addition, the first coupling portion and the second coupling portion further include a bending angle guiding portion extending toward the first connecting portion and the second connecting portion and having a preset curved surface to guide the curvature of the bending portion during folding.
또한, 상기 벤딩부의 하부에는 폴딩 시 상기 벤딩부의 곡률을 제어하기 위해 미리 설정된 폭을 갖는 홈 형태의 곡률 제어부가 마련되는 것을 특징으로 한다.In addition, a curvature control part in the form of a groove having a preset width is provided at the lower part of the bending part to control the curvature of the bending part when folding.
또한, 상기 곡률 제어부의 폭과 깊이는 상기 벤딩부의 위치에 따른 곡률에 따라 달리 형성되는 것을 특징으로 한다.In addition, the width and depth of the curvature control part are characterized in that they are formed differently depending on the curvature according to the position of the bending part.
이상과 같은 구성의 본 발명은 폴더블 디바이스의 폴딩 시 가요성 패널이 최대 곡률반지름을 형성하면서 언폴딩 시 완벽한 단일평면을 유지하면서 안정적으로 지지할 수 있다.In the present invention configured as described above, the flexible panel forms a maximum radius of curvature when the foldable device is folded and can be stably supported while maintaining a perfect single plane when unfolded.
또한, 별도의 동기화를 위한 구성없이 폴더블 디바이스의 양측 디바이스를 연동된 상태로 회동시킬 수 있다.Additionally, both devices of the foldable device can be rotated in a linked state without separate configuration for synchronization.
또한, 폴더블 디바이스에 직접 연결되는 링크구조와 벤딩부를 통해 폴딩/언폴딩 시 안정적인 회동과 플렉서블 디스플레이의 곡률 제어가 가능하다.In addition, stable rotation and curvature control of the flexible display during folding/unfolding are possible through the link structure and bending part directly connected to the foldable device.
또한, 폴딩 또는 언폴딩 과정에서 힌지 장치를 통해서 디스플레이 후면으로의 이물 유입을 원천적으로 차단할 수 있다.Additionally, the inflow of foreign substances into the rear of the display can be fundamentally blocked through the hinge device during the folding or unfolding process.
도 1은 본 발명의 일실시예에 따른 폴더블 디바이스용 힌지장치의 사시도이고,1 is a perspective view of a hinge device for a foldable device according to an embodiment of the present invention;
도 2는 본 발명의 일실시예에 따른 폴더블 디바이스용 힌지장치의 분해도이고,Figure 2 is an exploded view of a hinge device for a foldable device according to an embodiment of the present invention;
도 3은 본 발명의 폴더블 디바이스용 힌지장치의 단면도이고,Figure 3 is a cross-sectional view of the hinge device for a foldable device of the present invention;
도 4는 본 발명의 폴더블 디바이스용 힌지장치의 폴딩 시 단면도이고,Figure 4 is a cross-sectional view of the hinge device for a foldable device of the present invention when folded;
도 5a, 5b는 본 발명의 폴더블 디바이스용 힌지장치의 벤딩부의 폴딩/언폴딩 시 확대 단면도이고,5A and 5B are enlarged cross-sectional views of the bending portion of the hinge device for a foldable device of the present invention when folding/unfolding;
도 6은 본 발명의 폴더블 디바이스용 힌지장치에서 벤딩각 가이딩부가 추가된 단면도이고,Figure 6 is a cross-sectional view with a bending angle guiding part added to the hinge device for a foldable device of the present invention;
도 7은 본 발명의 폴더블 디바이스용 힌지장치에서 벤딩부가 두 부분으로 나뉜 실시예를 나타내는 평면도이다.Figure 7 is a plan view showing an embodiment in which the bending part is divided into two parts in the hinge device for a foldable device of the present invention.
상기와 같은 목적을 달성하기 위해 본 발명의 폴더블 디바이스용 힌지장치는 제1디바이스와 제2디바이스를 포함하는 폴더블 디바이스의 폴딩/언폴딩 부위에 마련되는 힌지장치에 있어서, 상기 제1디바이스의 일단과 제2디바이스의 일단에 피봇 가능하게 연결되는 제1링크부와 상기 제1링크부와 접철 가능하게 연결되는 제2링크부를 포함하는 제1연결부와, 상기 제2디바이스의 일단과 제1디바이스의 일단에 피봇 가능하게 연결되는 제3링크부와 상기 제3링크부와 접철 가능하게 연결되는 제4링크부를 포함하는 제2연결부와, 상기 제1연결부와 제2연결부의 상부에 마련되고, 제1디바이스의 제1결합부와 제2디바이스의 제2결합부에 고정되는 벤딩부를 포함하되, 상기 제1링크부와 제3링크부는 제1디바이스와 제2디바이스 사이에서 서로 맞물리게 배치되며, 언폴딩 시 벤딩부와 함께 단일면을 형성하여 상기 폴더블 디바이스에 포함된 디스플레이를 지지하는 것을 특징으로 한다.In order to achieve the above object, the hinge device for a foldable device of the present invention is a hinge device provided at the folding/unfolding portion of a foldable device including a first device and a second device, the hinge device of the first device A first connection part including a first link part pivotably connected to one end of the second device and a second link part foldably connected to the first link part, one end of the second device and the first device A second connection portion including a third link portion pivotably connected to one end of the third link portion and a fourth link portion foldably connected to the third link portion, is provided on the upper portion of the first connection portion and the second connection portion, It includes a bending part fixed to the first coupling part of the first device and the second coupling part of the second device, wherein the first link part and the third link part are arranged to engage with each other between the first device and the second device, and are configured to be unfolded. It is characterized in that it forms a single side together with the bending portion to support the display included in the foldable device.
이하에서 도면을 참조하여 본 발명에 따른 폴더블 디바이스용 힌지장치에 대해 상세히 설명한다.Hereinafter, a hinge device for a foldable device according to the present invention will be described in detail with reference to the drawings.
도 1은 본 발명의 일실시예에 따른 폴더블 디바이스용 힌지장치의 사시도이고, 도 2는 본 발명의 일실시예에 따른 폴더블 디바이스용 힌지장치의 분해도이고, 도 3은 본 발명의 폴더블 디바이스용 힌지장치의 단면도이고, 도 4는 본 발명의 폴더블 디바이스용 힌지장치의 폴딩 시 단면도이고, 도 5a, 5b는 본 발명의 폴더블 디바이스용 힌지장치의 벤딩부의 폴딩/언폴딩 시 확대 단면도이고, 도 6은 본 발명의 폴더블 디바이스용 힌지장치에서 벤딩각 가이딩부가 추가된 단면도이고, 도 7은 본 발명의 폴더블 디바이스용 힌지장치에서 벤딩부가 두 부분으로 나뉜 실시예를 나타내는 평면도이다.Figure 1 is a perspective view of a hinge device for a foldable device according to an embodiment of the present invention, Figure 2 is an exploded view of a hinge device for a foldable device according to an embodiment of the present invention, and Figure 3 is a foldable device of the present invention. It is a cross-sectional view of the hinge device for a device, Figure 4 is a cross-sectional view when the hinge device for a foldable device of the present invention is folded, and Figures 5a and 5b are enlarged cross-sectional views of the bending portion of the hinge device for a foldable device of the present invention when folded/unfolded. , Figure 6 is a cross-sectional view with the bending angle guiding part added in the hinge device for a foldable device of the present invention, and Figure 7 is a plan view showing an embodiment in which the bending part is divided into two parts in the hinge device for a foldable device of the present invention. .
폴더블 디바이스는 플랙서블 디스플레이를 포함하여 이루어지고 언폴딩 시 즉, 펼쳐졌을 때 디스플레이가 편평한 상태를 유지하도록 지지되어야 하고 폴딩 시 디스플레이가 뾰족한 상태가 되지 않도록 접히는 부분의 곡률이 최대가 되도록 여유공간을 확보할 필요가 있다. 하지만 종래의 힌지장치는 언폴딩 시 중앙 부분에 지지하는 구성이 없어 플랙서블 디스플레이에 주름이 발생하고, 폴딩 시 디스플레이의 곡률을 최대로 유지하는데 한계가 있다. 또한, 힌지장치가 복잡하게 구성될 뿐만 아니라 힌지장치를 중심으로 좌우 몸체가 힌지장치에 결합되므로 좌우 몸체가 따로 움직이거나 좌우 몸체의 회동을 동기화하기 위해 별도의 구성이 필요하므로 힌지장치의 구성이 복잡해지는 문제가 있다.A foldable device includes a flexible display and must be supported so that the display remains flat when unfolded, and free space must be provided to maximize the curvature of the folded portion so that the display does not become sharp when folded. There is a need to secure it. However, the conventional hinge device does not have a support structure in the center when unfolding, so wrinkles occur in the flexible display and there is a limit to maintaining the curvature of the display to the maximum when folding. In addition, not only is the hinge device configured in a complex manner, but the left and right bodies are coupled to the hinge device around the hinge device, so the left and right bodies move separately or a separate configuration is required to synchronize the rotation of the left and right bodies, so the configuration of the hinge device is complicated. There is a problem with termination.
본 발명의 폴더블 디바이스용 힌지장치는 이러한 문제점을 해결하기 위한 것으로 접히는 부위를 중심으로 양측에 마련되는 제1디바이스(10)와 제2디바이스(20)를 포함하는 폴더블 디바이스의 폴딩/언폴딩되는 부위에 마련되는 힌지장치에 있어서, 제1디바이스(10)의 일단과 제2디바이스(20)의 일단에 피봇 가능하게 연결되는 제1링크부(110)와 제1링크부(110)와 접철 가능하게 연결되는 제2링크부(120)를 포함하는 제1연결부(100)와, 제2디바이스(20)의 일단과 제1디바이스(10)의 일단에 피봇 가능하게 연결되는 제3링크부(210)와 제3링크부(210)와 접철 가능하게 연결되는 제4링크부(220)를 포함하는 제2연결부(200)와, 제1연결부(100)와 제2연결부(200)의 상부에 마련되어 제1디바이스(10)에 마련된 제1결합부(15)와 제2디바이스(20)에 마련된 제2결합부(25)에 고정되는 벤딩부(300)를 포함하여 이루어지되, 제1링크부(110)와 제3링크부(210)는 제1디바이스(10)와 제2디바이스(20) 사이에서 서로 맞물리게 배치되고, 언폴딩 시 제1연결부(100) 및 제2연결부(200)의 상부에 마련되는 벤딩부(300)와 함께 단일면을 형성하여 폴더블 디바이스에 포함된 디스플레이(30)를 지지한다.The hinge device for a foldable device of the present invention is intended to solve this problem, and is designed to provide folding/unfolding of a foldable device including a first device 10 and a second device 20 provided on both sides around the folding area. In the hinge device provided in the portion where the A first connection part 100 including a second link part 120 that can be connected, and a third link part pivotably connected to one end of the second device 20 and one end of the first device 10 ( 210) and a second connection part 200 including a fourth link part 220 foldably connected to the third link part 210, and on the upper part of the first connection part 100 and the second connection part 200. It is provided and includes a bending part 300 fixed to the first coupling part 15 provided in the first device 10 and the second coupling part 25 provided in the second device 20, wherein the first link part (110) and the third link portion 210 are arranged to engage with each other between the first device 10 and the second device 20, and when unfolded, the upper portions of the first connection portion 100 and the second connection portion 200 It forms a single side with the bending portion 300 provided in to support the display 30 included in the foldable device.
본 발명의 제1연결부(100)는 제1디바이스(10)의 일측에 마련되는 제1피봇연결부(130) 및 제2디바이스(20)의 일측에 마련되는 제2피봇연결부(230)에 일정 범위 내에서 회동가능하게 연결되는 제1링크부(110)와 제1링크부(110)의 일단에 제1링크연결부(140)를 통해 접철가능하게 연결되는 제2링크부(120)를 포함하여 이루어진다. 유사하게 제2연결부(200)는 제2디바이스(20)에 마련된 제2피봇연결부(230)와 제1디바이스(10)에 마련된 제1피봇연결부(130)에 일정 범위 내에서 회동가능하게 연결되는 제3링크부(210)와 제3링크부(210)의 일단에 제2링크연결부(240)를 통해 접철가능하게 연결되는 제4링크부(220)를 포함하여 이루어진다. 도시된 실시예에서는 각 연결부가 2개의 링크부로 구성되어 있지만 내구성과 언폴딩시 편평한 지지구조를 확보할 수 있다면 3개 이상으로 구성해도 무방하다. 본 발명의 제1연결부(100)에 포함된 제1링크부(110)와 제2연결부(200)에 포함된 제3링크부(210)는 각각 제1디바이스(10)와 제2디바이스(20)에 걸쳐서 마련된다. 따라서 제1링크부(110)와 제3링크부(210)는 제1디바이스(10)와 제2디바이스(20) 사이에서 서로 맞물린 형상으로 겹쳐지고 겹쳐진 부분이 단일면을 형성함에 따라 디스플레이(30)를 빈틈없이 지지할 수 있게 된다.The first connection part 100 of the present invention has a certain range in the first pivot connection part 130 provided on one side of the first device 10 and the second pivot connection part 230 provided on one side of the second device 20. It includes a first link part 110 rotatably connected within the first link part 110 and a second link part 120 foldably connected to one end of the first link part 110 through a first link connection part 140. . Similarly, the second connection portion 200 is rotatably connected to the second pivot connection portion 230 provided in the second device 20 and the first pivot connection portion 130 provided in the first device 10 within a certain range. It includes a third link part 210 and a fourth link part 220 that is foldably connected to one end of the third link part 210 through a second link connection part 240. In the illustrated embodiment, each connection part is composed of two link parts, but it may be composed of three or more as long as durability and a flat support structure when unfolded can be secured. The first link unit 110 included in the first connection unit 100 and the third link unit 210 included in the second connection unit 200 of the present invention are the first device 10 and the second device 20, respectively. ) is prepared over a period of time. Therefore, the first link unit 110 and the third link unit 210 overlap in an engaged shape between the first device 10 and the second device 20, and the overlapped portion forms a single surface, thereby forming the display 30 ) can be supported without any gaps.
본 발명의 제1연결부(100), 제2연결부(200), 벤딩부(300), 제1디바이스(10) 및 제2디바이스(20)의 결합관계를 도 1, 2를 참조하여 이하에서 보다 상세히 설명한다.The coupling relationship between the first connection part 100, the second connection part 200, the bending part 300, the first device 10, and the second device 20 of the present invention is shown below with reference to FIGS. 1 and 2. Explain in detail.
본 발명의 제1링크부(110)는 제1디바이스(10)의 일측에 마련되는 제1피봇연결부(130)과 제2디바이스(20)의 일측에 마련되는 제2피봇연결부(230)에 회동 가능하게 연결된다. 마찮가지로 제3링크부(210)도 제2피봇연결부(230)와 제1피봇연결부(130)에 회동가능하게 연결된다. 이러한 배치에 따라 앞서 설명한 것과 같이 제1링크부(110)와 제3링크부(210)는 제1디바이스(10)와 제2디바이스(20) 사이에서 서로 맞물리게 배치된다. 제1피봇연결부(130)와 제2피봇연결부(230)에는 제1링크부(110)와 제3링크부(210)가 모두 결합되고, 서로 맞물리게 결합되므로 제3링크부(210)가 제1피봇연결부(130)에 결합되는 부분이 제1링크부(110) 내에 위치하게 된다. 따라서 폴딩/언폴딩 과정에서 제1링크부(110)가 회전하기 위해 제1링크부(110)에는 제1벤딩홀(160)이 마련되고 제1벤딩홀(160)의 위치와 형상은 제3링크부(210)가 제1피봇연결부(130)에 결합되는 위치 및 제1링크부(110)의 회전궤적을 포함하는 형상을 갖는 것이 바람직하다. 이와 유사하게 제3링크부(210)에는 제1링크부(110)가 제2피봇연결부(230)에 결합되는 부위에 제2벤딩홀(260)이 마련된다. 도 2에서 제1링크부(110)가 제1디바이스(10) 및 제2디바이스(20)에 결합되는 것을 빨간색으로 표시했고 제3링크부(210)가 결합되는 것은 파란색으로 표시하였다. 제1피봇연결부(130) 및 제2피봇연결부(230)에 결합되는 제1링크부(110)와 제2링크부(210)의 결합위치가 수직방향으로 나란하게 위치하지만 디바이스의 두께, 제1디바이스(10)와 제2디바이스(20) 사이의 이격거리, 제1, 2링크부(110, 210)의 형상 등 다양한 요인에 따라 결합위치의 배열이 달라질 수 있음은 물론이다. 결합위치의 배열이 달라지더라도 제1링크부(110)와 제3링크부(210)가 언폴딩 시 상부에 마련되는 벤딩부(300)와 함께 단일면을 형성하여 디스플레이(30)를 지지하여야 한다. 제1벤딩홀(160)과 제2벤딩홀(260)은 제1링크부(110)와 제3링크부(210)가 원활하게 회동하여야 하므로 회전 궤적에 맞춰 곡선형상으로 마련하는 것이 바람직하다. 물론 제1, 2벤딩홀(160, 260)을 회전 궤적이 포함되는 하나의 커다란 홀로 형성할 수 있지만 힌지장치의 내구도 향상 측면에서는 회전 궤적과 일치하는 곡선 형상으로 마련하는 것이 바람직하다. 제2링크부(120)와 제4링크부(220)는 각각 제1링크부(110)와 제3링크부(210)의 일단인 제1링크연결부(140)과 제2링크연결부(240)에 결합된다. 제2링크부(120)의 경우 폴딩되는 과정에서 시계방향으로 회전되고, 제4링크부(220)는 반시계방향으로 회전된다. 언폴딩이 된 상황에서는 상부에 위치한 디스플레이(30)를 튼튼하게 지지하기 위해서는 제2링크부(120)는 반시계방향으로, 제4링크부(220)는 시계방향으로 회동되는 것을 방지할 필요가 있다. 이를 위해 제1링크부(110)에는 제1역회전방지부(150)을 마련하고, 제3링크부(210)에는 제2역회전방지부(250)을 마련하는 것이 바람직하다. 제2링크부(120)와 제4링크부(220)의 타단의 형상은 끝쪽으로 갈수록 두께가 얇아지는데 이는 상부에 벤딩부(300)가 위치하고 벤딩부(300)의 양단에 일정 두께 이상이 필요한 구성인 역벤딩 방지부(330)와 곡률 제어부(340)이 마련되는데 벤딩부(300)의 두께 변화를 완만하게 형성하여 내구도를 향상시키기 위함이다. 도 3의 A부분을 참조하면 역벤딩 방지부(330)와 곡률 제어부(340)이 마련되는 부위의 두께와 제1연결부(100) 및 제2연결부(200) 상부의 두께가 차이가 있고 제2링크부(120), 제4링크부(220)의 형상을 따라 두께 변화가 완만하게 형성됨을 알 수 있다. 또한, 도 4의 C부분을 참조하면 제2, 4링크부(120, 220)이 폴딩 시 제1, 2디바이스(10, 20)의 밑면에 밀착하고 디스플레이(30)의 곡률반지름을 최대로 하기 위해 회동각도에 맞춰 타단의 형상을 조절하는 것이 바람직하다. The first link portion 110 of the present invention rotates on the first pivot connection portion 130 provided on one side of the first device 10 and the second pivot connection portion 230 provided on one side of the second device 20. Possibly connected. Similarly, the third link portion 210 is also rotatably connected to the second pivot connection portion 230 and the first pivot connection portion 130. According to this arrangement, as described above, the first link unit 110 and the third link unit 210 are arranged to be engaged with each other between the first device 10 and the second device 20. Both the first link part 110 and the third link part 210 are coupled to the first pivot connection part 130 and the second pivot connection part 230, and since they are engaged with each other, the third link part 210 is the first link part 210. The portion coupled to the pivot connection portion 130 is located within the first link portion 110. Therefore, in order for the first link part 110 to rotate during the folding/unfolding process, a first bending hole 160 is provided in the first link part 110, and the location and shape of the first bending hole 160 are similar to those of the third. It is preferable that the link part 210 has a shape that includes the position where the link part 210 is coupled to the first pivot connection part 130 and the rotation trajectory of the first link part 110. Similarly, the third link part 210 is provided with a second bending hole 260 at the area where the first link part 110 is coupled to the second pivot connection part 230. In FIG. 2, the connection between the first link unit 110 and the first device 10 and the second device 20 is indicated in red, and the connection between the third link unit 210 and the second device 20 is indicated in blue. Although the coupling positions of the first link part 110 and the second link part 210, which are coupled to the first pivot connection part 130 and the second pivot connection part 230, are located parallel to each other in the vertical direction, the thickness of the device, the first Of course, the arrangement of the coupling positions may vary depending on various factors such as the separation distance between the device 10 and the second device 20 and the shapes of the first and second link parts 110 and 210. Even if the arrangement of the coupling position is different, the first link part 110 and the third link part 210 must form a single surface together with the bending part 300 provided at the top to support the display 30 when unfolded. do. The first bending hole 160 and the second bending hole 260 are preferably provided in a curved shape according to the rotation trajectory because the first link part 110 and the third link part 210 must rotate smoothly. Of course, the first and second bending holes 160 and 260 can be formed as one large hole containing a rotation trajectory, but in terms of improving the durability of the hinge device, it is preferable to provide a curved shape that matches the rotation trajectory. The second link part 120 and the fourth link part 220 are the first link connection part 140 and the second link connection part 240, which are one end of the first link part 110 and the third link part 210, respectively. is combined with In the case of the second link unit 120, it rotates clockwise during the folding process, and the fourth link unit 220 rotates counterclockwise. In order to firmly support the display 30 located at the top in an unfolded situation, it is necessary to prevent the second link part 120 from rotating counterclockwise and the fourth link part 220 from rotating clockwise. there is. For this purpose, it is desirable to provide a first reverse rotation prevention part 150 in the first link part 110 and a second reverse rotation prevention part 250 in the third link part 210. The shape of the other ends of the second link part 120 and the fourth link part 220 becomes thinner toward the end, which means that the bending part 300 is located at the top and a certain thickness is required at both ends of the bending part 300. The reverse bending prevention unit 330 and the curvature control unit 340 are provided to improve durability by gently changing the thickness of the bending unit 300. Referring to part A of FIG. 3, there is a difference between the thickness of the area where the reverse bending prevention part 330 and the curvature control part 340 are provided and the thickness of the upper part of the first connection part 100 and the second connection part 200. It can be seen that the thickness change is gradual along the shapes of the link portion 120 and the fourth link portion 220. In addition, referring to part C of FIG. 4, the second and fourth link parts 120 and 220 adhere to the bottom of the first and second devices 10 and 20 when folded and maximize the radius of curvature of the display 30. For this reason, it is desirable to adjust the shape of the other end according to the rotation angle.
본 발명의 벤딩부(300)는 제1디바이스(10)의 제1결합부(15)와 제2디바이스(20)의 제2결합부(25)에 결합되어 제1연결부(100)와 제2연결부(200)의 상부에 마련되는 구성으로 폴딩 언폴딩 시 휘어지는 것이 전제되므로 가요성을 갖는 재질로 마련하는 것이 바람직하다. 벤딩부(300)는 디스플레이(30)를 지지하는 구성으로 언폴딩 시 상부면이 편평한 단일평면을 이룬다. 벤딩부(300)의 양끝단에는 상부에 역벤딩 방지부(330)가 마련되는데 역벤딩 방지부(330)는 언폴딩 시 벤딩부(300)가 아랫방향으로 내려앉는 것을 방지함과 동시에 폴딩 시 제1, 2디바이스(10, 20) 내부공간의 변화에 맞춰 디스플레이(30)가 구겨지는 것을 방지한다. 즉, 언폴딩 시에는 역벤딩 방지부(330)의 상부에 마련된 돌출부(335)가 서로 맞닿아 아랫방향으로 내려가지 않도록 하고, 폴딩 시에는 도 4, 5에서와 같이 벌어지도록 형성되어 벤딩부(300) 상부의 길이를 연장한다. 폴딩 시 엑벤딩 방지부(330)의 자연스러운 곡면형성을 위해 제1결합부(15) 및 제2결합부(25)에는 일정한 곡면을 갖는 벤딩각 가이딩부(50)을 형성하는 것이 바람직하다. 곡률 제어부(340)은 벤딩부(300)의 양끝단 하부에 마련되어 미리 설정된 폭을 갖는 구성으로 도 4의 B부분을 참조하면 폴딩 시 벤딩부(300)가 형성하는 곡률을 제어하는 역할을 수행한다. 즉, 벤딩부(300)의 곡률변화가 큰 부분에는 곡률 제어부(340)의 폭이 넓고 곡률변화가 작은 부분에는 곡률 제어부(340)의 폭이 좁게 형성된다. 이를 통해 원하는 형상으로 벤딩부(300)가 휘어지도록 조절할 수 있고 이를 통해 폴딩 시 디바이스 내부공간을 보다 효율적으로 활용할 수 있는 장점이 있다. 벤딩부(300)는 일체형으로 형성할 수도 있지만 도 7에서와 같이 제1벤딩편(310), 제2벤딩편(320) 두 부분으로 나눠도 무방하다. 일체형으로 형성할 경우 빈틈없이 디스플레이(30)를 지지할 수 있는 장점이 있는 반면 제조 과정이 복잡할 수 있다. 두 부분으로 나눠 형성하는 경우 폴딩 언폴딩 시 디스플레이(30)의 길이변화에 유연하게 대응할 수 있는 반면 조립 과정이 복잡할 수 있다.The bending portion 300 of the present invention is coupled to the first coupling portion 15 of the first device 10 and the second coupling portion 25 of the second device 20 to connect the first coupling portion 100 and the second coupling portion. It is provided on the upper part of the connection part 200 and is assumed to be bent during folding and unfolding, so it is preferable to make it of a flexible material. The bending part 300 supports the display 30, and when unfolded, the upper surface forms a single flat surface. Reverse bending prevention parts 330 are provided at the top of both ends of the bending part 300. The reverse bending prevention parts 330 prevent the bending part 300 from falling downward when unfolding and at the same time prevent the bending part 300 from falling downward when folding. It prevents the display 30 from being wrinkled according to changes in the internal space of the first and second devices 10 and 20. That is, when unfolding, the protrusions 335 provided on the upper part of the reverse bending prevention part 330 come into contact with each other to prevent them from moving downward, and when folded, they are formed to open as shown in FIGS. 4 and 5 to form a bending portion ( 300) Extend the length of the upper part. In order to form a natural curved surface of the bending prevention portion 330 during folding, it is preferable to form a bending angle guiding portion 50 having a certain curved surface in the first coupling portion 15 and the second coupling portion 25. The curvature control unit 340 is provided below both ends of the bending unit 300 and has a preset width. Referring to part B of FIG. 4, the curvature control unit 340 serves to control the curvature formed by the bending unit 300 during folding. . That is, the width of the curvature control unit 340 is wide in the part where the curvature change of the bending part 300 is large, and the width of the curvature control part 340 is narrow in the part where the curvature change is small. Through this, the bending portion 300 can be adjusted to be bent into a desired shape, which has the advantage of allowing more efficient use of the internal space of the device when folded. The bending portion 300 may be formed as an integrated piece, but may be divided into two parts, a first bending piece 310 and a second bending piece 320, as shown in FIG. 7. When formed as one piece, there is an advantage in being able to support the display 30 without any gaps, but the manufacturing process may be complicated. If formed in two parts, it can flexibly respond to changes in the length of the display 30 during folding and unfolding, but the assembly process may be complicated.

Claims (11)

  1. 제1디바이스와 제2디바이스를 포함하는 폴더블 디바이스의 폴딩/언폴딩 부위에 마련되는 힌지장치에 있어서,In the hinge device provided at the folding/unfolding portion of the foldable device including the first device and the second device,
    상기 제1디바이스의 일단과 제2디바이스의 일단에 피봇 가능하게 연결되는 제1링크부와 상기 제1링크부와 접철 가능하게 연결되는 제2링크부를 포함하는 제1연결부와,A first connection part including a first link part pivotably connected to one end of the first device and one end of the second device and a second link part foldably connected to the first link part,
    상기 제2디바이스의 일단과 제1디바이스의 일단에 피봇 가능하게 연결되는 제3링크부와 상기 제3링크부와 접철 가능하게 연결되는 제4링크부를 포함하는 제2연결부와,a second connection unit including a third link unit pivotably connected to one end of the second device and one end of the first device and a fourth link unit foldably connected to the third link unit;
    상기 제1연결부와 제2연결부의 상부에 마련되고, 제1디바이스의 제1결합부와 제2디바이스의 제2결합부에 고정되는 벤딩부를 포함하되,A bending portion provided on the first connection portion and the second connection portion and fixed to the first coupling portion of the first device and the second coupling portion of the second device,
    상기 제1링크부와 제3링크부는 제1디바이스와 제2디바이스 사이에서 서로 맞물리게 배치되며, 언폴딩 시 벤딩부와 함께 단일면을 형성하여 상기 폴더블 디바이스에 포함된 디스플레이를 지지하는 것을 특징으로 하는 폴더블 디바이스용 힌지장치.The first link part and the third link part are disposed to be engaged with each other between the first device and the second device, and when unfolded, form a single surface together with the bending part to support the display included in the foldable device. Hinge device for foldable devices.
  2. 청구항 1에서,In claim 1,
    상기 제1링크부에는 제3링크부가 제1디바이스와 연결되는 부위에 제1벤딩홀이 형성되고, 제3링크부에는 제1링크부가 제2디바이스와 연결되는 부위에 제2벤딩홀이 형성되는 것을 특징으로 하는 폴더블 디바이스용 힌지장치.A first bending hole is formed in the first link portion at the portion where the third link portion is connected to the first device, and a second bending hole is formed in the third link portion at the portion where the first link portion is connected to the second device. A hinge device for a foldable device, characterized in that.
  3. 청구항 2에서,In claim 2,
    상기 제1벤딩홀과 제2벤딩홀은 상기 제1링크부와 제3링크부의 회전 궤적과 같은 형태의 곡선 형상인 것을 특징으로 하는 폴더블 디바이스용 힌지장치.A hinge device for a foldable device, wherein the first bending hole and the second bending hole have a curved shape similar to the rotation trajectory of the first link portion and the third link portion.
  4. 청구항 1에서,In claim 1,
    상기 제1링크부에는 상기 제2링크부의 하부로 연장된 제1역회전방지부가 형성되고,A first reverse rotation prevention part extending below the second link part is formed on the first link part,
    상기 제3링크부에는 상기 제4링크부의 하부로 연장된 제2역회전방지부가 형성되고,A second reverse rotation prevention part extending below the fourth link part is formed in the third link part,
    상기 제1역회전방지부 및 제2역회전방지부는 언폴딩된 후 상기 제2링크부 및 제4링크부가 시계방향 또는 반시계방향으로 회전하는 것을 방지하는 것을 특징으로 하는 폴더블 디바이스용 힌지장치.A hinge device for a foldable device, characterized in that the first reverse rotation prevention unit and the second reverse rotation prevention unit prevent the second link unit and the fourth link unit from rotating clockwise or counterclockwise after being unfolded.
  5. 청구항 1에서,In claim 1,
    상기 제2링크부와 제4링크부는 상기 제1링크부 및 제3링크부로부터 멀어질수록 두께가 작아지는 형상인 것을 특징으로 하는 폴더블 디바이스용 힌지장치.A hinge device for a foldable device, wherein the second link portion and the fourth link portion have a thickness that decreases as the distance from the first link portion and the third link portion increases.
  6. 청구항 1에서,In claim 1,
    상기 벤딩부는 가요성 재질의 일체형으로 형성되고, 상기 제2링크부와 제4링크부 끝단 양쪽으로 연장되어 제1결합부 및 제2결합부에 고정되는 것을 특징으로 하는 폴더블 디바이스용 힌지장치.The hinge device for a foldable device, wherein the bending part is formed as an integrated piece of flexible material, extends to both ends of the second link part and the fourth link part, and is fixed to the first coupling part and the second coupling part.
  7. 청구항 1에서,In claim 1,
    상기 벤딩부는 제1연결부 쪽에 위치하는 제1벤딩편과 제2연결부 쪽에 위치하는 제2벤딩편으로 구성되고,The bending portion consists of a first bending piece located on the first connection side and a second bending piece located on the second connection side,
    상기 제1벤딩편과 제2벤딩편은 상기 제1디바이스와 제2디바이스 사이에서 요철형상으로 맞물리게 결합되는 것을 특징으로 하는 폴더블 디바이스용 힌지장치.A hinge device for a foldable device, wherein the first bending piece and the second bending piece are engaged in a concavo-convex shape between the first device and the second device.
  8. 청구항 1에서,In claim 1,
    상기 벤딩부의 상부에는 폴딩 시 상기 벤딩부의 상부면의 길이가 연장되도록 미리 설정된 깊이와 폭을 갖는 역벤딩 방지부가 마련되고,A reverse bending prevention part having a preset depth and width is provided on the upper part of the bending part so that the length of the upper surface of the bending part extends when folded,
    상기 역벤딩 방지부의 상부에는 언폴딩 시 서로 맞닿는 돌출부가 형성되는 것을 특징으로 하는 폴더블 디바이스용 힌지장치.A hinge device for a foldable device, characterized in that protrusions that come into contact with each other when unfolded are formed on the upper part of the reverse bending prevention part.
  9. 청구항 8에서,In claim 8,
    상기 제1결합부와 제2결합부는 폴딩 시 상기 벤딩부의 곡률을 유도하기 위해 제1연결부와 제2연결부 쪽으로 연장형성되면서 미리 설정된 곡면을 갖는 벤딩각 가이딩부를 더 포함하는 폴더블 디바이스용 힌지장치.The first coupling portion and the second coupling portion extend toward the first connecting portion and the second connecting portion to induce the curvature of the bending portion when folding, and further include a bending angle guiding portion having a preset curved surface. .
  10. 청구항 1에서,In claim 1,
    상기 벤딩부의 하부에는 폴딩 시 상기 벤딩부의 곡률을 제어하기 위해 미리 설정된 폭을 갖는 홈 형태의 곡률 제어부가 마련되는 것을 특징으로 하는 폴더블 디바이스용 힌지장치.A hinge device for a foldable device, characterized in that a curvature control part in the form of a groove having a preset width is provided at the lower part of the bending part to control the curvature of the bending part when folding.
  11. 청구항 10에서,In claim 10,
    상기 곡률 제어부의 폭과 깊이는 상기 벤딩부의 위치에 따른 곡률에 따라 달리 형성되는 것을 특징으로 하는 폴더블 디바이스용 힌지장치.A hinge device for a foldable device, wherein the width and depth of the curvature control part are formed differently depending on the curvature depending on the position of the bending part.
PCT/KR2022/018309 2022-06-03 2022-11-18 Hinge device for foldable device WO2023234494A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160144299A (en) * 2015-06-08 2016-12-16 삼성전자주식회사 Foldable device
KR20190065689A (en) * 2017-12-04 2019-06-12 엘지디스플레이 주식회사 Display apparatus
KR20190080014A (en) * 2017-12-28 2019-07-08 엘지디스플레이 주식회사 Fordable display device
KR20190110689A (en) * 2018-03-21 2019-10-01 주식회사 파인테크닉스 The flexible display frame and method of manufacturing the flexible display frame
WO2020209424A1 (en) * 2019-04-11 2020-10-15 엘지전자 주식회사 Flexible display device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160144299A (en) * 2015-06-08 2016-12-16 삼성전자주식회사 Foldable device
KR20190065689A (en) * 2017-12-04 2019-06-12 엘지디스플레이 주식회사 Display apparatus
KR20190080014A (en) * 2017-12-28 2019-07-08 엘지디스플레이 주식회사 Fordable display device
KR20190110689A (en) * 2018-03-21 2019-10-01 주식회사 파인테크닉스 The flexible display frame and method of manufacturing the flexible display frame
WO2020209424A1 (en) * 2019-04-11 2020-10-15 엘지전자 주식회사 Flexible display device

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