CN214202972U - Foldable display device - Google Patents

Abstract

A foldable display device includes a flexible member and a bendable support mechanism that supports bending of the flexible member. The support mechanism that can buckle includes middle part subassembly, first casing, second casing, first driving piece, second driving piece, transmission assembly, first moving part and second moving part. The first shell is connected with the first driving piece, the second shell is connected with the second driving piece, and the first driving piece and the first moving piece as well as the second driving piece and the second moving piece are respectively connected through the transmission assembly. When the foldable display device is folded or unfolded, the first shell and the second shell are rotated, the first driving piece and the second driving piece rotate relatively and drive the first moving piece and the second moving piece to rotate through the transmission assembly respectively, the transmission assembly is arranged on the middle assembly, a track groove does not need to be formed in the end face of the first driving piece or the end face of the second driving piece, the thickness and the size of the bendable supporting mechanism are reduced, and the foldable display device is light and thin.

Description

Foldable display device

Technical Field

The utility model relates to a collapsible demonstration technical field especially relates to a collapsible display device.

Background

Currently, flexible OLEDs (Organic Light-Emitting diodes) are mostly used for foldable screens. The flexible OLED has the characteristics of low power consumption and good flexibility, can be bent by 360 degrees and even be twisted, and is widely applied to display equipment such as mobile phones, wearable electronic devices and medical equipment.

To realize the folding function of the display device, a bendable supporting mechanism is needed to drive the display screen to bend. The existing bendable supporting mechanism adopts a structure with grooves on the side edges or the bottom, so that the whole display equipment is easily thicker.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a collapsible display device, it is whole thick to solve display device, and is not enough at folding in-process screen folding region's accommodation space, easily leads to the screen radius of buckling too little, the problem of harm screen.

For realizing the purpose of the utility model, the utility model provides a following technical scheme:

the utility model provides a foldable display device, include: the flexible piece and support the flexible piece support mechanism that can buckle.

The supporting mechanism that can buckle includes: a middle assembly; the first shell and the second shell are used for supporting the non-bending area of the flexible piece, the first shell and the second shell are arranged on two opposite sides of the middle assembly, and the first shell and the second shell rotate relatively to fold or unfold; the first driving piece is connected with the first shell and rotates along with the first shell; the second driving piece is connected with the second shell and rotates along with the second shell; the first driving piece and the second driving piece are connected with the transmission assembly; the first moving part is movably connected with the first driving part through the transmission component, and the second moving part is movably connected with the second driving part through the transmission component.

When the bendable supporting mechanism is folded, the first driving piece and the second driving piece rotate, and the transmission assembly drives the first moving piece and the second moving piece to rotate, so that the middle assembly, the first moving piece and the second moving piece enclose a space for bending a bending area of the flexible piece.

In one embodiment, the foldable supporting mechanism can be folded or unfolded around a folding shaft, the first driving element and the second driving element are respectively and rotatably connected to two opposite sides of the middle component, the first moving element and the second moving element are respectively and rotatably connected to two opposite sides of the middle component, and the rotating shafts of the first driving element and the second driving element are closer to the folding shaft than the rotating shafts of the first moving element and the second moving element.

In one embodiment, the middle assembly, the first movable member, and the second movable member support the bending region of the flexible member to bend at a predetermined bending radius.

In one embodiment, the transmission assembly includes a first driving sub-element, a second driving sub-element, a first movable sub-element and a second movable sub-element, the first driving sub-element is fixedly connected to the first driving element, the second driving sub-element is fixedly connected to the second driving element, the first movable sub-element is fixedly connected to the first movable element, and the second movable sub-element is fixedly connected to the second movable element; when the first driving piece or the second driving piece rotates, the first driving sub-piece or the second driving sub-piece rotates along with the first driving piece or the second driving piece to drive the first movable sub-piece or the second movable sub-piece, so that the first movable piece or the second movable piece rotates together.

In one embodiment, the first movable sub-element includes a first fixed portion and a first engaging portion, the first movable element is fixedly connected to the first fixed portion, and the first engaging portion is directly or indirectly rotatably connected to the first driving sub-element.

In one embodiment, the transmission assembly further comprises a first transmission sub-member and a second transmission sub-member, the first transmission sub-member is rotatably connected between the first driving sub-member and the first movable sub-member, and the second transmission sub-member is rotatably connected between the second driving sub-member and the second movable sub-member.

In one embodiment, the transmission assembly further comprises a linkage sub for synchronizing rotation of the first movable sub and the second movable sub.

In one embodiment, the middle component includes an assembly member, and the first driving sub-member, the second driving sub-member, the first transmission sub-member, the second transmission sub-member, the linkage sub-member, the first movable sub-member, and the second movable sub-member are all rotationally connected to the assembly member about their own axis.

In one embodiment, the first driving sub-part comprises a first driving rod, the axis of the first driving rod is collinear with the axis of the first driving sub-part, the second driving sub-part comprises a second driving rod, the axis of the second driving rod is collinear with the axis of the second driving sub-part, the first driving part is fixedly connected with the first driving rod, and the first driving part drives the first driving sub-part to rotate through the first driving rod; the second driving piece is fixedly connected with the second driving rod, and the second driving piece drives the second driving sub-piece to rotate through the second driving rod.

In one embodiment, the periphery of the end of the first driving rod or the second driving rod is provided with a limiting surface; the first driving piece or the second driving piece is provided with a connecting hole correspondingly matched with the end part of the first driving rod or the second driving rod.

In one embodiment, the foldable display device further comprises a gear adjusting assembly, wherein the gear adjusting assembly is connected with the transmission assembly to adjust that the first shell and the second shell are in a stable state when rotating to a preset included angle.

In one embodiment, the gear adjustment assembly includes a first limiting member, a second limiting member and a guide rod, the guide rod is connected to the transmission assembly, and when the foldable display device is folded or unfolded, the transmission assembly drives the guide rod to rotate so as to drive the first limiting member to rotate to be in spacing cooperation with the second limiting member, so that the foldable display device is stable at one or more folding angles.

The transmission assembly is connected with the first driving piece and the first movable piece, or connected with the second driving piece and the second movable piece, or simultaneously connected with the first driving piece, the second driving piece, the first movable piece and the second movable piece, so that the first movable piece is driven to rotate when the first driving piece rotates; when the second driving piece rotates, the second moving piece is driven to rotate. The middle assembly, the first moving part and the second moving part enclose a space for the flexible part to bend. The transmission component is directly arranged on the middle component, and a track groove does not need to be formed on the end face of the first driving part or the end face of the second driving part, so that the thickness and the size of the bendable supporting mechanism are reduced, and the light and thin foldable display equipment is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a foldable display device according to an embodiment in a folded state;

FIG. 2 is a schematic cross-sectional view of the foldable display device of the embodiment of FIG. 1 taken along line A-A in a folded state;

FIG. 3 is a schematic view of an embodiment of a foldable display device in an unfolded state with a flexible member omitted;

FIG. 4 is a partial structural view of an embodiment of a bendable support mechanism;

FIG. 5 is a schematic cross-sectional view of the drive assembly of the embodiment of FIG. 4 taken along line B-B;

FIG. 6 is a schematic diagram of an assembly structure according to an embodiment;

FIG. 7 is a schematic structural diagram of a shift position adjustment assembly according to an embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

As shown in fig. 1, the present invention provides a foldable display device. Referring to fig. 2, the foldable display device includes a flexible member 1 and a bendable support mechanism 2 for supporting bending of the flexible member. The flexible element 1 covers the upper surface of the bendable supporting mechanism 2, and the flexible element 1 is a display panel with a display function and has a bendable characteristic, such as a flexible display screen. The bendable supporting mechanism 2 can be bent or unfolded around a bending shaft to support the flexible element 1 to be bent or unfolded.

The flexible member 1 comprises a bending region and a non-bending region. In this embodiment, the flexible member 1 includes two non-bending regions and a bending region connected between the two non-bending regions. The two non-bending areas are relatively rotated by bending of the bending area, so that the flexible part 1 is folded or unfolded. It is understood that in other embodiments, the flexible member 1 may include a plurality of bending regions or a plurality of non-bending regions, and the bending regions are connected between different non-bending regions.

Alternatively, when the flexible element 1 displays a picture, as shown in fig. 3, the bendable supporting mechanism 2 unfolds and drives the flexible element 1 to unfold, and when the flexible element 1 is not required to display a picture, as shown in fig. 2, the bendable supporting mechanism 2 folds and drives the flexible element 1 to fold.

Referring to fig. 3, the foldable supporting mechanism 2 includes a central component 21 and a transmission component 4, and the transmission component 4 is connected to the central component 21. Specifically, the transmission assembly 4 is accommodated in the middle assembly 21 and is rotatably connected with the middle assembly 21.

The foldable support mechanism 2 further includes a first casing 221 and a second casing 222, and the first casing 221 and the second casing 222 are disposed on two opposite sides of the middle assembly 21. The first housing 221 includes a first support 2211 and a first middle frame 2212, the first middle frame 2212 is disposed around the first support 2211, and the first support 2211 is slidably connected to the first middle frame 2212. Similarly, the second housing 222 includes a second support 2221 and a second middle frame 2222, the second middle frame 2222 is disposed around the second support 2221, and the second support 2221 is slidably connected with the second middle frame 2222. The first casing 221 is used for supporting one non-bending region of the flexible member 1, and the second casing 222 is used for supporting another non-bending region of the flexible member 1. Specifically, two non-bending areas of the flexible member 1 are respectively attached to the surfaces of the first support 2211 of the first casing 221 and the second support 2221 of the second casing 222, the first casing 221 and the second casing 222 rotate relatively to fold or unfold, and the non-bending areas of the flexible member 1 are supported to rotate synchronously to fold or unfold the flexible member 1.

Referring to fig. 4, the foldable supporting mechanism 2 further includes a first driving member 31, a second driving member 32, a first movable member 51 and a second movable member 52, the first movable member 51 is connected to the transmission assembly 4, and the transmission assembly 4 is connected to the first driving member 31, so that the first movable member 51 is movably connected to the first driving member 31 through the transmission assembly 4, and the first movable member 51 and the first driving member 31 keep rotating synchronously. Similarly, the second movable member 52 is movably connected to the second driving member 32 via the transmission assembly 4 in the same manner as the first movable member 51.

The first driving member 31 is connected to the first casing 221 and rotates along with the first casing 221. The second driving member 32 is connected to the second housing 222 and rotates with the second housing 222. Specifically, the first driving member 31 is fixedly connected to the first middle frame 2212, and the second driving member 32 is fixedly connected to the second middle frame 2222. When a force is applied to the first middle frame 2212 or the second middle frame 2222, so that the first shell 221 and the second shell 222 are folded or unfolded relatively, the first driving member 31 and the second driving member 32 are driven to rotate.

It is understood that the rotational axis of the first driving member 31 or the second driving member 32 is parallel to the rotational axis of the first movable member 51 or the second movable member 52. Specifically, the rotational axis of the first driver 31 or the second driver 32 and the rotational axis of the first mover 51 or the second mover 52 are not coaxial. Optionally, the plane of the rotation axis of the first driving element 31 or the second driving element 32 and the rotation axis of the first movable element 51 or the second movable element 52 is not coplanar with the supporting surface of the first supporting element 2211 and the second supporting element 2221.

When the foldable support mechanism 2 is folded, the first driving member 31 and the second driving member 32 rotate, and the transmission assembly 4 drives the first movable member 51 and the second movable member 52 to rotate, respectively. Specifically, the rotation axes of the first driving element 31 and the second driving element 32 are far away from the bending axis of the bendable supporting mechanism 2 than the rotation axes of the first moving element 51 and the second moving element 52, so that when the bendable supporting mechanism 2 is folded, the first moving element 51 and the second moving element 52 form a certain angle, so that the middle element 21, the first moving element 51 and the second moving element 52 enclose a space for bending the bending area of the flexible element. Wherein the included angle between the first movable member 51 and the second movable member 52 is an acute angle. Alternatively, the angle between the first and second members 51, 52 can be a right angle or an obtuse angle, as desired. As shown in fig. 2, the bending area of the flexible member 1 is bent at a preset bending radius in the avoidance space, so that the problem that the flexible member 1 is damaged due to too small bending radius of the screen is solved.

By using the transmission assembly 4 as the connection structure, the transmission assembly 4 is connected to the first driving member 31 and the first movable member 51, or connected to the second driving member 32 and the second movable member 52, or simultaneously connected to the first driving member 31, the second driving member 32, the first movable member 51, and the second movable member 52. When the first driving piece 31 rotates, the first movable piece 51 is driven to rotate; when the second driving member 32 rotates, the second movable member 52 is driven to rotate. The middle component 21, the first movable piece 51 and the second movable piece 52 enclose a space for bending the flexible piece 1. The transmission component 4 is directly arranged on the middle component 21, and a track groove does not need to be formed on the end surface of the first driving component 31 or the second driving component 32, so that the thickness and the volume of the bendable supporting mechanism 2 are reduced, and the light and thin foldable display device is realized.

In one embodiment, referring to fig. 2 and 4, the foldable supporting mechanism 2 can be folded or unfolded around a bending axis. The first driving member 31 and the second driving member 32 are rotatably connected to opposite sides of the middle assembly 21, respectively. In particular, the first drive 31 and the second drive 32 are both connected to the transmission assembly 4. In this embodiment, the first driving member 31 and the second driving member 32 are both connected to the transmission assembly 4 in a flat position, and in other embodiments, connection manners such as clamping, welding or integral forming may also be adopted. The first and second movable members 51, 52 are pivotally connected to opposite sides of the central member 21 and pivot relative to the central member 21. Specifically, the first movable member 51 and the second movable member 52 are both connected to the transmission assembly 4, and the first driving member 31 drives the first movable member 51 to rotate and the second driving member 32 drives the second movable member 52 to rotate through transmission of the transmission assembly 4. The rotating shafts of the first driving element 31 and the second driving element 32 are closer to the bending shaft than the rotating shafts of the first moving element 51 and the second moving element 52, so that when the first driving element 31 and the second driving element 32 rotate around the rotating shafts, the first moving element 51 and the second moving element 52 can keep synchronous rotation, and can rotate at different angles with the first driving element 31 and the second driving element 32, so as to avoid a bending area of the accommodating space for accommodating the flexible element 1.

In one embodiment, referring to fig. 4 and 5, the transmission assembly 4 includes a first driving sub-member 41, a second driving sub-member 42, a first movable sub-member 43 and a second movable sub-member 44, the first driving sub-member 41 is fixedly connected to the first driving member 31, and the first driving sub-member 41 and the first driving member 31 rotate synchronously. The second driving sub-member 42 is fixedly connected to the second driving member 32, and the second driving member 32 and the second driving sub-member 42 are rotated synchronously. The first movable part 43 is fixedly connected with the first movable part 51, and when the first movable part 43 rotates, the first movable part 51 is driven to rotate by the same angle. The second movable member 44 is fixedly connected to the second movable member 52, and when the second movable member 44 rotates, the second movable member 52 is driven to rotate by the same angle. The first driving sub-member 41 and the first movable sub-member 43 are directly or indirectly movably connected, and the second driving sub-member 42 and the second movable sub-member 44 are directly or indirectly movably connected. The movable connection can be in a rotating connection mode, a sliding connection mode, a clamping connection mode and the like. Through the connection relationship, when the first driving element 31 or the second driving element 32 rotates, the first driving sub-element 41 or the second driving sub-element 42 rotates to drive the first movable sub-element 43 or the second movable sub-element 44 to rotate, and further drives the first movable element 51 or the second movable element 52 to rotate together.

Specifically, the first driving sub-member 41 includes a first transmission portion 411, and the second driving sub-member 42 includes a second transmission portion 421. Specifically, the first transmission portion 411 and the second transmission portion 421 are respectively latch teeth disposed on the circumferential direction of the first driving sub-member 41 and the second driving sub-member 42.

Alternatively, the size of the included angle between the first movable member 51 and the second movable member 52 when the foldable support mechanism 2 is folded can be limited by setting the transmission ratio of the first driving sub-member 41 and the first movable sub-member 43, and setting the transmission ratio of the second driving sub-member 42 and the second movable sub-member 44. Specifically, the size of the included angle between the first movable member 51 and the second movable member 52 when the foldable support mechanism 2 is folded can be limited by setting the distance, the number or the spanned arc of the latch in the circumferential direction of the first driving sub-member 41 and the second driving sub-member 42.

In one embodiment, referring to fig. 4 and 5, the first movable sub-element 43 includes a first fixing portion 431 and a first engaging portion 432, the first fixing portion 431 is fixedly connected to the first movable element 51, and the first engaging portion 432 is directly or indirectly movably connected to the first driving sub-element 41. The first movable sub-element 43 and the first driving sub-element 41 rotate synchronously through the connection between the first engaging portion 432 and the first driving sub-element 41, so that the first fixing portion 431 also rotates synchronously, and the first fixing portion 431 drives the first movable element 51 to rotate synchronously. It is understood that the second movable sub-element 44 is the same as the first movable sub-element 43, the second movable sub-element 44 includes a second fixed portion 441 and a second engaging portion 442, the second fixed portion 441 is fixedly connected to the second movable member 52 so that the second movable sub-element 44 drives the second movable member 52 to rotate, and the second engaging portion 442 is directly or indirectly movably connected to the second driving sub-element 42 so that the second driving sub-element 42 drives the second movable sub-element 44 to rotate.

In another embodiment, referring to fig. 3, the first housing 221 of the foldable display device rotates relative to the middle assembly 21, the second housing 222 is fixed relative to the middle assembly 21, the transmission assembly 4 comprises a driving sub-assembly and a movable sub-assembly, and the transmission assembly 4 is connected to the first housing 221. Taking fig. 5 as an example, the transmission assembly 4 includes a first driving sub-member 41 and a first movable sub-member 43, and the first driving sub-member 41 is directly or indirectly connected to the first movable sub-member 43, so that the first driving sub-member 41 drives the first movable sub-member 43 to rotate when rotating. The transmission assembly 4 is connected with the first shell 221, so that the first shell 221 rotates relative to the middle assembly 21, and the second shell 222 is fixed relative to the middle assembly 21, thereby not only realizing folding or unfolding of the foldable display device, but also simplifying the structure of the foldable display device, reducing the volume of the transmission assembly 4, and easily realizing lightness and thinness of the foldable display device.

In one embodiment, referring to fig. 4 and 5, the transmission assembly 4 further includes a first transmission sub-element 45 and a second transmission sub-element 46, wherein the first transmission sub-element 45 is rotatably connected between the first driving sub-element 41 and the first movable sub-element 43. Specifically, the first transmission sub-element 45 is engaged with the first transmission portion 411 of the first driving sub-element 41, the first transmission sub-element 45 is engaged with the first engagement portion 432 of the first movable sub-element 43, the first driving sub-element 41 rotates to drive the first transmission sub-element 45 to rotate, the first transmission sub-element 45 further drives the first movable sub-element 43 to rotate, and the control sensitivity of the first shell 221 on the first movable plate 51 can be adjusted by setting the transmission ratio among the first transmission sub-element 45, the first driving sub-element 41 and the first movable sub-element 43. Similarly, the second transmission sub-member 46 is rotatably coupled between the second drive sub-member 42 and the second movable sub-member 44, and it will be appreciated that the coupling and transmission are identical to the first transmission sub-member 45. When the distance between the first driving sub-element 41 and the first movable sub-element 43 is large, or the distance between the second driving sub-element 42 and the second movable sub-element 44 is large, the first driving sub-element 45 is arranged between the first driving sub-element 41 and the first movable sub-element 43, or the second driving sub-element 46 is arranged between the second driving sub-element 42 and the second movable sub-element 44, so that the first driving sub-element 41 and the first movable sub-element 43, and the second driving sub-element 42 and the second movable sub-element 44 can still keep synchronous rotation, and the transmission ratio between the first driving sub-element 41 and the first movable sub-element 43 can be adjusted by changing the radius of the first driving sub-element 45, so that when the first shell 221 rotates for a certain angle, the first movable element 51 rotates for a preset angle. It will be appreciated that the second transmission sub 46 can function with the same function and effect as the first transmission sub 45. Optionally, the first and second transmission sub-members 45, 46 are of a gear structure. It can be understood that the transmission ratio between the first driving sub-element 41 and the first movable sub-element 43 can also be adjusted by setting the number of teeth of the gears, so as to adjust the first movable element 51 to rotate a preset angle when the first housing 221 rotates a certain angle.

In one embodiment, referring to fig. 4 and 5, the transmission assembly 4 further includes a linkage sub-assembly 47. The linkage sub-members 47 are used for enabling the first movable sub-member 43 and the second movable sub-member 44 to synchronously rotate, and the number and the radius of the linkage sub-members 47 are adjustable. Specifically, when the transmission assembly 4 does not include the first transmission sub-member 45 and the second transmission sub-member 46, and the number of the linkage sub-members 47 is one, the linkage sub-member 47 is directly connected to the first movable sub-member 43 and the second movable sub-member 44, the first driving sub-member 41 rotates and drives the first movable sub-member 43 to rotate, the first movable sub-member 43 drives the linkage sub-member 47 to rotate, and the linkage sub-member 47 drives the second movable sub-member 44 and the second driving sub-member 42 to rotate. The linkage sub-piece 47 is arranged between the first movable sub-piece 43 and the second movable sub-piece 44 so as to achieve the purpose of synchronously rotating the first movable sub-piece 43 and the second movable sub-piece 44.

In another embodiment, referring to fig. 4 and 5, when the transmission assembly 4 includes the first transmission sub-member 45 and the second transmission sub-member 46, the number of the linkage sub-members 47 is two. As shown in fig. 5, the linkage member 47 includes a first linkage member 471 and a second linkage member 472, and the first linkage member 471 and the second linkage member 472 are rotatably connected. The first linkage part 471 is connected to the first transmission part 45 in a rotatable manner, and the second linkage part 472 is connected to the second transmission part 46 in a rotatable manner. The first transmission sub-member 45 is rotatably connected to the first movable sub-member 43, and the second transmission sub-member 46 is rotatably connected to the second movable sub-member 44. When either the first linkage sub-member 471 or the second linkage sub-member 472 rotates, the other linkage sub-member also rotates synchronously, so that the first movable sub-member 43 and the second movable sub-member 44 rotate synchronously, and finally the first movable member 51 and the second movable member 52 rotate synchronously. By increasing the number of the linkage sub-members 47, the first movable sub-member 43 and the second movable sub-member 45 can be rotated synchronously, and meanwhile, by changing the radius and the number of the linkage sub-members 47, the transmission ratio of the transmission assembly 4 can be further adjusted.

In another embodiment, referring to fig. 5, the number of the linkage sub-elements 47 is one, and the linkage sub-elements 47 are rotatably connected between the first driving sub-element 41 and the second driving sub-element 42, when the first driving sub-element 41 rotates, the linkage sub-element 47 drives the second driving sub-element 42 to rotate, so as to finally realize the synchronous rotation of the first movable sub-element 43 and the second movable sub-element 44, and further drive the first movable element 51 and the second movable element 52 to rotate synchronously, so as to adjust the size of the included angle between the first movable element 51 and the second movable element 52. Optionally, the number of the coupling sub-members 47 is plural, the plurality of coupling sub-members 47 are engaged with each other, and at least one coupling sub-member is connected to the first driving sub-member 41, and at least one coupling sub-member 47 is connected to the second driving sub-member 44.

In one embodiment, referring to fig. 2 and fig. 3, the foldable display device includes a plurality of driving components 4, and the flexible member 1 includes a plurality of bending regions, and each bending region is provided with one driving component 4. Through setting up a plurality of transmission subassemblies 4, can realize that flexible piece 1 all can buckle in a plurality of regions to but make foldable display device present more folding or state of turning over, satisfy multiple needs.

In one embodiment, referring to fig. 3, 5 and 6, the middle component 21 includes an assembly 210, and the assembly 210 has a mounting portion 211 and a fixing portion 212. In this embodiment, the mounting portion 211 and the fixing portion 212 are an integrated structure, and a split assembly structure may be adopted in other embodiments. The first driving sub-element 41, the second driving sub-element 42, the first transmission sub-element 45, the second transmission sub-element 46, the linkage sub-element 47, the first movable sub-element 43 and the second movable sub-element 44 are all rotationally connected with the mounting part 211 by taking the axis of the mounting part as the center. The middle assembly 21 further includes a bottom case 213, and the fixing portion 212 is connected to the bottom case 213 and is used for fixing the first driving sub-element 41, the second driving sub-element 42, the first transmission sub-element 45, the second transmission sub-element 46, the linkage sub-element 47, the first movable sub-element 43, and the second movable sub-element 44 on the bottom case 213. By arranging the assembly part 210, the purpose of installing and fixing each sub-part in the transmission component 4 according to a certain position is realized.

In one embodiment, referring to fig. 4, the first driving sub-member 41 includes a first driving rod 413, and an axis of the first driving rod 413 is collinear with an axis of the first driving sub-member 41. In this embodiment, the first driving rod 413 and the first driving sub-element 41 are an integrated structure, and the first driving rod 413 and the first driving element 41 rotate synchronously. In other embodiments, the first driving rod 413 and the first driving member 41 may be combined, for example, assembled by using an interference fit connection, a fastener connection, or the like. The first driving member 31 is fixedly connected to the first driving rod 413, and when the first driving member 31 rotates, the first driving sub-member 41 is driven to rotate by the first driving rod 413. It can be understood that the second driving sub-member 42 has the same structure as the first driving sub-member 41, and similarly, the second driving sub-member 42 includes a second driving rod 423, an axis of the second driving rod 423 is collinear with an axis of the second driving sub-member 42, the second driving member 32 is fixedly connected with the second driving rod 423, and when the second driving member 32 rotates, the second driving sub-member 42 is driven to rotate by the second driving rod 423. By arranging the driving rod as a connecting structure, the purpose of keeping the first driving piece 31 and the first driving sub-piece 41, and the second driving piece 32 and the second driving sub-piece 42 synchronous is achieved, and the assembly and disassembly are easy.

In one embodiment, referring to fig. 4, the circumference of the end of the first driving rod 413 or the second driving rod 423 is provided with a limiting surface, and the shape of the limiting surface is non-circular to achieve the purpose of holding and limiting. The first driving member 31 is provided with a connecting hole correspondingly matched with the end of the first driving rod 413. Similarly, the second driving member 32 is opened with a connecting hole correspondingly engaged with the end of the second driving lever 423. In this embodiment, the limiting surface is connected to the connecting hole through the sleeve, and in other embodiments, the limiting surface may be directly connected to the connecting hole in a matching manner, so as to fix the first driving rod 413 to the first driving member 31, and fix the second driving rod 423 to the second driving member 32. The mounting mode that the driving piece is fixedly connected with the driving rod by matching the limiting surface with the connecting hole is adopted, the structure is simple, and the mounting is convenient.

In one embodiment, referring to fig. 3 and 7, the foldable display device further includes a gear adjusting assembly 6, one end of the gear adjusting assembly 6 is fixedly connected to the transmission assembly 4, and the transmission assembly 4 drives the gear adjusting assembly 6 to rotate when rotating. The other end of the gear adjusting component 6 is provided with a gear corresponding to the rotation angle, and when the transmission component 4 rotates to a preset angle, the gear adjusting component 6 is fixed at the gear corresponding to the preset angle and brakes the transmission component 4 to stop rotating, so that the first shell 221 and the second shell 222 are adjusted to be in a stable state when rotating to a preset included angle.

In an embodiment, referring to fig. 3 and 7, the gear adjusting assembly 6 includes a first limiting member 61, a second limiting member 62 and a guiding rod 63, the guiding rod 63 is connected to the transmission assembly 4 and keeps rotating synchronously with the transmission assembly 4, when the foldable display device is folded or unfolded, the transmission assembly 4 drives the guiding rod 63 to rotate, so as to drive the first limiting member 61 to rotate to limit and cooperate with the second limiting member 62, so that the foldable display device is stable at one or more folding angles. In this embodiment, the gear adjusting assembly 6 further includes an elastic member 64, the second limiting member 62 and the elastic member 64 are both disposed through the guide rod 63, the second limiting member 62 is a cam structure, and the first limiting member 61 and the second limiting member 62 are in rotational limiting fit. In other embodiments, the first limiting member 61 and the second limiting member 62 may also adopt other limiting structures and limiting matching manners, such as damping sheet limiting and the like.

Specifically, the elastic element 64 is disposed at one end of the second position-limiting element 62 away from the first position-limiting element 61, when the first position-limiting element 61 rotates, the first position-limiting element 61 rotates relative to the second position-limiting element 62 and applies pressure to the second position-limiting element 62 to drive the second position-limiting element 62 to slide along the extending direction of the guide rod 63 and apply pressure to the elastic element 64, and the elastic element 64 is compressed by force to elastically abut against the first position-limiting element 61 along the opposite sliding direction, so that the first position-limiting element 61 stops rotating, and the foldable display device is stabilized at a certain angle. As shown in fig. 3 and 7, when the first housing 221 and the second housing 222 are rotated to form an included angle of a first angle, the first housing 221 and the second housing 222 drive the transmission assembly 4 to rotate, the transmission assembly 4 drives the guide rod 63 connected thereto to rotate, the guide rod 63 further drives the first limiting member 61 to rotate synchronously by the first angle and apply pressure to the second limiting member 62, the second limiting member 62 slides along the guide rod 63 and applies pressure to the elastic member 64, the elastic member 64 compresses and elastically abuts against the second limiting member 62 in the opposite direction of the sliding direction to stop the rotation, the second limiting member 62 further abuts against the first limiting member 61 to stop the rotation, so that the first limiting member 61 and the second limiting member 62 are in a first holding stable state, and the foldable display device is folded or unfolded and is stable at the first angle. When the included angle between the first casing 221 and the second casing 222 is rotated from the first angle to the second angle, a folding or unfolding force is applied to the first casing 221 and the second casing 222, the gear adjusting assembly 6 repeats the above actions, so that the first limiting assembly 61 and the second limiting assembly 62 rotate relatively to change from the first holding stable state to the second holding stable state, and the foldable display device is folded or unfolded and stabilized at the second angle, thereby realizing the gear adjustment.

Through setting up gear adjusting part 6 and being connected with transmission assembly 4, can make first casing 221 and second casing 222 stabilize at predetermined folding angle, further, can make collapsible display device stabilize at predetermined state as required, satisfy the multiple demand of user.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (12)

1. A foldable display device, comprising:

the flexible piece with support the supporting mechanism that can buckle that the flexible piece is buckled, the supporting mechanism that can buckle includes:

a middle assembly;

the first shell and the second shell are used for supporting the non-bending area of the flexible piece, the first shell and the second shell are arranged on two opposite sides of the middle assembly, and the first shell and the second shell rotate relatively to fold or unfold;

the first driving piece is connected with the first shell and rotates along with the first shell; the second driving piece is connected with the second shell and rotates along with the second shell;

the first driving piece and the second driving piece are connected with the transmission assembly;

the first movable piece is movably connected with the first driving piece through the transmission assembly, and the second movable piece is movably connected with the second driving piece through the transmission assembly;

when the bendable supporting mechanism is folded, the first driving piece and the second driving piece rotate, and the transmission assembly drives the first moving piece and the second moving piece to rotate, so that the middle assembly, the first moving piece and the second moving piece enclose a space for bending a bending area of the flexible piece.

2. The foldable display device of claim 1, wherein the foldable support mechanism is foldable or unfoldable about a folding axis, the first and second driving members are respectively pivotally connected to opposite sides of the middle member, the first and second movable members are respectively pivotally connected to opposite sides of the middle member, and the rotational axes of the first and second driving members are closer to the folding axis than the rotational axes of the first and second movable members.

3. The foldable display device of claim 1, wherein the middle component, the first movable member, and the second movable member support a bending region of the flexible member to bend at a predetermined bending radius.

4. The foldable display device of claim 2, wherein the transmission assembly comprises a first driving sub-element, a second driving sub-element, a first movable sub-element and a second movable sub-element, the first driving sub-element is fixedly connected to the first driving element, the second driving sub-element is fixedly connected to the second driving element, the first movable sub-element is fixedly connected to the first movable element, and the second movable sub-element is fixedly connected to the second movable element; when the first driving piece or the second driving piece rotates, the first driving sub-piece or the second driving sub-piece rotates along with the first driving piece or the second driving piece to drive the first movable sub-piece or the second movable sub-piece, so that the first movable piece or the second movable piece rotates together.

5. The foldable display device of claim 4, wherein the first movable sub-element comprises a first fixed portion and a first engaging portion, the first movable element being fixedly connected to the first fixed portion, the first engaging portion being directly or indirectly rotatably connected to the first driving sub-element.

6. The foldable display device of claim 4, wherein the transmission assembly further comprises a first transmission sub-member and a second transmission sub-member, the first transmission sub-member being rotatably coupled between the first driving sub-member and the first movable sub-member, the second transmission sub-member being rotatably coupled between the second driving sub-member and the second movable sub-member.

7. The foldable display device of claim 6, wherein the transmission assembly further comprises a linkage sub for synchronizing rotation of the first movable sub and the second movable sub.

8. The foldable display device of claim 7, wherein the middle component comprises an assembly member, and the first driving sub-member, the second driving sub-member, the first transmission sub-member, the second transmission sub-member, the linkage sub-member, the first movable sub-member, and the second movable sub-member are rotatably connected to the assembly member about their own axes.

9. The foldable display device of claim 6, wherein the first driving sub-member comprises a first driving rod having an axis collinear with an axis of the first driving sub-member, the second driving sub-member comprises a second driving rod having an axis collinear with an axis of the second driving sub-member, the first driving member is fixedly connected to the first driving rod, and the first driving member rotates the first driving sub-member via the first driving rod; the second driving piece is fixedly connected with the second driving rod, and the second driving piece drives the second driving sub-piece to rotate through the second driving rod.

10. The foldable display device of claim 9, wherein a circumference of an end portion of the first driving lever or the second driving lever is provided with a stopper surface; the first driving piece or the second driving piece is provided with a connecting hole correspondingly matched with the end part of the first driving rod or the second driving rod.

11. The foldable display device of any one of claims 5 to 10, further comprising a gear adjustment assembly coupled to the transmission assembly to adjust the first housing and the second housing to a stable state when rotated to a predetermined angle.

12. The foldable display device of claim 11, wherein the gear adjustment assembly comprises a first limiting member, a second limiting member and a guiding rod, the guiding rod is connected to the transmission assembly, and when the foldable display device is folded or unfolded, the transmission assembly drives the guiding rod to rotate, so as to drive the first limiting member to rotate to be in limiting cooperation with the second limiting member, so that the foldable display device is stable at one or more folding angles.

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