CN114251349A

CN114251349A - Folding device and folding display equipment with flexible screen

Info

Publication number: CN114251349A
Application number: CN202011023945.7A
Authority: CN
Inventors: 周子航; 汤海舰; 周虎
Original assignee: BYD Co Ltd; Shanwei BYD Electronics Co Ltd
Current assignee: BYD Co Ltd; Shanwei BYD Electronics Co Ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2022-03-29
Anticipated expiration: 2040-09-25
Also published as: CN114251349B

Abstract

The invention is suitable for the field of folding display equipment, and discloses a folding device and folding display equipment with a flexible screen, wherein the folding device comprises a first supporting plate, a second supporting plate, a synchronous rotating mechanism, a supporting component and a middle shell, the synchronous rotating mechanism is arranged on the middle shell, the synchronous rotating mechanism is used for driving the first supporting plate and the second supporting plate to synchronously rotate relative to the middle shell so as to realize folding or unfolding, the supporting component is arranged between the first supporting plate and the second supporting plate, and in the process of switching the folding state to the unfolding state, the first supporting plate and the second supporting plate drive the supporting component to move close to the first supporting plate and the second supporting plate so as to support the supporting component between the first supporting plate and the second supporting plate; during the process of switching from the unfolding state to the folding state, the first supporting plate and the second supporting plate drive the supporting assembly to move away from the first supporting plate and the second supporting plate to provide an avoiding space. The folding type display device meets the use requirements of a user on large-screen display and portability of the display device.

Description

Folding device and folding display equipment with flexible screen

Technical Field

The invention belongs to the field of folding display equipment, and particularly relates to a folding device and folding display equipment with a flexible screen.

Background

With the continuous development of portable electronic devices, the display screens of mobile terminals such as mobile phones and tablet computers become larger and larger, and although large-screen display can simultaneously display more contents for users, the large-screen devices have the problems of large size, large occupied space, inconvenience in carrying and the like, so that the development of large-screen portable electronic devices is restricted, and a folding-screen electronic product is produced in order to simultaneously take the portability of each electronic device and the dual attributes of a large screen into consideration. However, when the folding screen electronic product is used, the screen is easily creased, and thus the use experience of consumers is affected.

Disclosure of Invention

The invention aims to solve at least one of the technical problems and provides a folding device and a folding display device with a flexible screen, which have larger area difference by folding and unfolding, meet the use requirements of users on large-screen display and convenient carrying of the display device and bring good use experience to the users.

The technical scheme of the invention is as follows: a folding device comprises a first supporting plate, a second supporting plate, a synchronous rotating mechanism, a supporting assembly and a middle shell, wherein the synchronous rotating mechanism is installed on the middle shell and used for driving the first supporting plate and the second supporting plate to synchronously rotate relative to the middle shell so as to realize folding or unfolding; and in the process of switching from the unfolding state to the folding state, the first supporting plate and the second supporting plate drive the supporting component to move away from the first supporting plate and the second supporting plate to provide an avoiding space.

Optionally, the support assembly includes a first support assembly and a second support assembly, the first support assembly includes a first sliding support plate and a first moving assembly, the second support assembly includes a second sliding support plate and a second moving assembly, the first sliding support plate and the second sliding support plate are spaced apart from each other along a first direction of the middle housing, the first moving assembly is configured to drive the first sliding support plate to move closer to or away from the first support plate and the second support plate along with the rotation of the first support plate, the second moving assembly is configured to drive the second sliding support plate to move closer to or away from the first support plate and the second support plate along with the rotation of the second support plate, wherein the first direction of the middle housing is located on a horizontal plane.

Optionally, the first moving assembly includes a first driving connecting rod, a first bearing portion, and a first mounting block, one end of the first sliding support plate facing the second sliding support plate is connected with the first bearing portion, the first driving connecting rod is located between the first sliding support plate and the second sliding support plate, and the first driving connecting rod is close to the first bearing portion, one end of the first driving connecting rod is connected with the first support plate, the other end of the first driving connecting rod is connected with a first support end, the first support end is provided with a first sliding groove, the first bearing portion is connected with a first sliding member, the first sliding member is slidably connected to the first sliding groove, the first sliding member is further rotatable relative to the first sliding groove, the first mounting block is mounted to the middle housing, the first mounting block is provided with a first oblique sliding groove that is oblique relative to the second direction of the middle housing, the first bearing part is also connected with a first inclined slide block which is connected with the first inclined slide groove in a sliding manner, and the first driving connecting rod rotates along with the first supporting plate and drives the first sliding supporting plate to move along the first inclined slide groove through the matching of the first sliding part and the first slide groove;

the second moving assembly comprises a second driving connecting rod, a second bearing part and a second mounting block, one end of the second sliding supporting plate facing the first sliding supporting plate is connected with the second bearing part, the second driving connecting rod is positioned between the first sliding supporting plate and the second sliding supporting plate, the second driving connecting rod is close to the second bearing part, one end of the second driving connecting rod is connected with the second supporting plate, the other end of the second driving connecting rod is connected with a second branch end, the second branch end is provided with a second sliding groove, the second bearing part is connected with a second sliding part, the second sliding part is connected with the second sliding groove in a sliding manner, the second sliding part can also rotate relative to the second sliding groove, the second mounting block is mounted on the middle shell, and the second mounting block is provided with a second inclined sliding groove inclined relative to the second direction of the middle shell, the second bearing part is further connected with a second oblique sliding block, the second oblique sliding block is connected with the second oblique sliding groove in a sliding mode, the second driving connecting rod rotates along with the second supporting plate and enables the second driving connecting rod to drive the second sliding supporting plate to move along the second oblique sliding groove through the matching of the second sliding piece and the second sliding groove, and the second direction of the middle shell is perpendicular to the horizontal plane.

Optionally, a first arc-shaped section is formed by the middle part of the first driving connecting rod sinking towards the middle shell, and a second arc-shaped section is formed by the middle part of the second driving connecting rod sinking towards the middle shell.

Optionally, a first mounting portion is connected to one end of the first sliding support plate, which is far away from the second sliding support plate, the first mounting portion is provided with a first guide groove, the middle housing is provided with a first guide rod, the first guide rod is parallel to the first inclined sliding groove, and the first guide groove is slidably connected to the first guide rod;

the second sliding support plate is kept away from the one end of first sliding support plate is connected with the second installation department, the second installation department is provided with the second guide way, middle casing is provided with the second guide bar, just the second guide bar is on a parallel with the oblique spout of second, the second guide way sliding connection in the second guide bar.

Optionally, the synchronous rotating mechanism includes a rotating component and a synchronizing component, the synchronizing component is disposed between the first support plate and the second support plate, the synchronizing component is configured to control the first support plate and the second support plate to rotate synchronously, the rotating component is configured to guide the first support plate and the second support plate to rotate along a set track, and in a process of switching from the folded state to the unfolded state, one ends of the first support plate and the second support plate close to the middle housing are close to each other; in the process of switching from the unfolded state to the folded state, one ends, close to the middle shell, of the first supporting plate and the second supporting plate are far away from each other.

Optionally, the rotating assembly comprises a first connecting piece, a second connecting piece, a first arc-shaped sliding block and a second arc-shaped sliding block, the first connecting piece is connected with one end of the first supporting plate close to the first sliding supporting plate along the first direction of the middle shell, one end of the second supporting plate close to the second sliding supporting plate is connected with the second connecting piece, the first connecting piece is connected with the first arc-shaped sliding block at one side back to the first sliding supporting plate, the second arc-shaped sliding block is connected with one side of the second connecting piece back to the second sliding supporting plate, the middle shell is provided with a first arc-shaped chute and a second arc-shaped chute which are opposite to each other on two opposite side walls along the first direction, first arc slider sliding connection in first arc spout, second arc slider sliding connection in second arc spout.

Optionally, the synchronization assembly is provided with one group, two groups or more groups; when the synchronous assemblies are at least two groups, the synchronous assemblies are arranged at intervals along the first direction of the middle shell.

Optionally, the synchronizing assembly includes a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the first connecting rod and the second connecting rod are disposed at an interval along a first direction of the middle housing, one end of the third connecting rod is rotatably connected to the first connecting rod and the second connecting rod through a first connecting shaft, the other end of the third connecting rod is connected to the first supporting plate, one end of the fourth connecting rod is rotatably connected to the first connecting rod and the second connecting rod through a second connecting shaft, the other end of the fourth connecting rod is connected to the second supporting plate, the third connecting rod and the fourth connecting rod are disposed at an interval along a third direction of the middle housing, and the first connecting rod and the second connecting rod can slide along a second direction of the middle housing, wherein the third direction of the middle housing is located on a horizontal plane, and the third direction of the intermediate housing is perpendicular to the first direction of the intermediate housing.

Optionally, the folding device further includes a first rack, a first gear shaft, a second rack, a second gear and a second gear shaft, the first gear is disposed between the first mounting portion and the first connecting member, the first mounting portion is provided with a first gear shaft hole, the first connecting member is provided with a third sliding groove, the first gear shaft penetrates through the first gear, one end of the first gear shaft is rotatably connected to the first gear shaft hole, the other end of the first gear shaft is slidably connected to the third sliding groove, the first gear shaft is further rotatable relative to the third sliding groove, the first rack is mounted in the middle housing, the first rack is inclined relative to the second direction of the middle housing, the first gear is engaged with the first rack, and by cooperation of the first gear shaft and the third sliding groove, when the first sliding supporting plate moves, the first gear rolls along the first rack;

the second gear is arranged between the second mounting portion and the second connecting piece, the second mounting portion is provided with a second gear shaft hole, the second connecting piece is provided with a fourth sliding groove, the second gear shaft penetrates through the second gear, one end of the second gear shaft is rotatably connected to the second gear shaft hole, the other end of the second gear shaft is in sliding connection with the fourth sliding groove, the second gear shaft can further rotate relative to the fourth sliding groove, the second rack is mounted in the middle shell, the second rack is obliquely arranged relative to the second direction of the middle shell, the second gear is in meshing connection with the second rack, and when the second sliding supporting plate moves, the second gear rolls along the second rack through matching of the second gear shaft and the fourth sliding groove.

Optionally, the first support assembly further comprises a first flexible plate mounted to the first sliding blade; the second support assembly further includes a second flexible plate mounted to the second sliding blade.

Optionally, the first flexible board is provided with a first limiting sliding groove, the first sliding supporting plate is provided with a first clamping block, the first clamping block is clamped in the first limiting sliding groove, and the first clamping block can slide relative to the first limiting sliding groove;

the second flexible board is provided with a second limiting sliding groove, the second sliding supporting plate is provided with a second clamping block, the second clamping block is clamped in the second limiting sliding groove, and the second clamping block can slide relative to the second limiting sliding groove.

Optionally, the first flexible board and the second flexible board are respectively provided with an arch surface at two opposite sides along the third direction of the middle housing, and the arch surfaces are concave in a direction away from the middle housing.

Optionally, one end of the first supporting plate close to the middle shell is connected with a first accommodating portion, one end of the second supporting plate close to the middle shell is connected with a second accommodating portion, and the first accommodating portion and the second accommodating portion are arc-shaped plates.

The invention also provides a folding display device with the flexible screen, which comprises a first shell, a second shell, the flexible screen and the folding device, wherein a first supporting plate of the folding device is connected with the first shell, a second supporting plate of the folding device is connected with the second shell, and the first shell and the second shell are used for bearing the flexible screen.

Optionally, the first housing is provided with a first mounting groove at one side close to the folding device, the first mounting groove is provided with a first supporting block and a second supporting block at two opposite ends along the first direction of the middle housing respectively, the first supporting block is connected with the first supporting block and the second supporting block respectively, the second housing is provided with a second mounting groove at one side close to the folding device, the second mounting groove is provided with a third supporting block and a fourth supporting block at two opposite ends along the first direction of the middle housing respectively, the second supporting block is connected with the third supporting block and the fourth supporting block respectively, the first supporting block is adjacent to the second connecting piece of the folding device, the first supporting block is connected with a third arc-shaped sliding block, the middle housing of the folding device is further provided with a third arc-shaped groove at the side wall provided with the second arc-shaped groove, the third arc-shaped sliding block is connected with the third arc-shaped groove in a sliding mode, the fourth supporting block is adjacent to the first connecting piece of the folding device, the fourth supporting block is connected with the fourth arc-shaped sliding block, the side wall, provided with the first arc-shaped groove, of the middle shell of the folding device is further provided with the fourth arc-shaped groove, and the fourth arc-shaped sliding block is connected with the fourth arc-shaped groove in a sliding mode.

According to the folding device and the folding display equipment with the flexible screen, provided by the invention, in the process that the first supporting plate and the second supporting plate are switched from the folding state to the unfolding state, the supporting assembly moves close to the first supporting plate and the second supporting plate, so that the supporting assembly can support and fill the gap between the first supporting plate and the second supporting plate, and in the process that the first supporting plate and the second supporting plate are switched from the unfolding state to the folding state, the supporting assembly relatively moves away from the first supporting plate and the second supporting plate to provide an avoiding space, so that the supporting assembly is prevented from interfering the first supporting plate and the second supporting plate to rotate oppositely; the folding device is applied to a folding display device with a flexible screen, when the display device is in an unfolded state, the supporting component can support the part of the flexible screen between the first shell and the second shell, and when a user touches the flexible screen, the flexible screen is prevented from being trapped in a gap between the first supporting plate and the second supporting plate; when the display device is in a folded state, the bent part of the flexible screen is contained in a space formed by the first supporting plate, the second supporting plate and the supporting assembly, so that the crease generated by folding the flexible screen can be effectively faded.

Drawings

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

Fig. 1 is a schematic structural diagram of a folding apparatus provided in an embodiment of the present invention;

fig. 2 is an exploded view of a folding device according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a schematic diagram of a portion of the first support assembly and the second support assembly of a folding apparatus according to an embodiment of the present invention;

FIG. 5 is another schematic structural diagram of the first support assembly and the second support assembly of the folding apparatus provided in the embodiment of the present invention;

FIG. 6 is an enlarged schematic view at B in FIG. 4;

FIG. 7 is an enlarged schematic view at C of FIG. 4;

FIG. 8 is an enlarged schematic view at D of FIG. 5;

fig. 9 is a schematic structural diagram of positions of a first transmission assembly and a second transmission assembly in a folding device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a first support plate and a second support plate in a folding device according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram illustrating positions of a first driving link and a second driving rail in a folding apparatus according to an embodiment of the present invention;

FIG. 12 is a schematic cross-sectional view taken at E-E of FIG. 9;

FIG. 13 is a schematic cross-sectional view taken at F-F of FIG. 9;

FIG. 14 is a schematic structural diagram of a folding apparatus provided by an embodiment of the present invention with parts omitted in a folded state;

FIG. 15 is a cross-sectional view of a folding apparatus in a folded state according to an embodiment of the present invention;

FIG. 16 is a schematic structural diagram of a synchronizing assembly in a folding apparatus according to an embodiment of the present invention;

FIG. 17 is a schematic diagram of a synchronizing assembly in a folding apparatus according to an embodiment of the present invention;

FIG. 18 is a simplified diagram of the movement of a synchronizing assembly in a folding apparatus according to an embodiment of the present invention;

fig. 19 is an expanded schematic view of a foldable display device provided by an embodiment of the present invention, with a flexible screen omitted;

fig. 20 is an exploded view of a foldable display device according to an embodiment of the present invention, with a flexible screen omitted;

fig. 21 is a schematic folding diagram of a foldable display device according to an embodiment of the present invention;

fig. 22 is a sectional view illustrating a folded state of a foldable display apparatus according to an embodiment of the present invention;

fig. 23 is a structural diagram illustrating an unfolded state of the foldable display device according to the embodiment of the present invention with parts omitted;

FIG. 24 is an enlarged schematic view at G of FIG. 23;

fig. 25 is a schematic configuration diagram of fig. 24 with parts omitted.

In the figure, 1-folding device, 2-first support plate, 20-receiving space, 21-first receiving part, 3-second support plate, 31-second receiving part, 4-middle shell, 5-rotating component, 51 a-first connecting piece, 511 a-third sliding groove, 52 a-first arc slide block, 51 b-second connecting piece, 511 b-fourth sliding groove, 52 b-second arc slide block 53 b-second arc groove, 6-synchronizing component, 61-first connecting rod, 62-second connecting rod, 63-third connecting rod, 64-fourth connecting rod, 65-first connecting shaft, 66-second connecting shaft, 7-first support component, 71-first sliding support plate, 711-first clamping block, 72-first driving connecting rod, 721-a first support end, 722-a first slide groove, 723-a first arc-shaped section, 724-a first slide part, 73-a first bearing part, 731-a first mounting hole, 732-a first oblique slide block, 74-a first mounting part, 741-a first gear hole, 742-a first guide groove, 743-a first guide rod, 7431-a second boss, 75-a first gear, 76-a first rack, 761-a first boss, 77-a first mounting block, 771-a first oblique slide groove, 78-a first flexible plate, 781-a first limit slide groove, 782-an arch surface, 79-a first support component, 8-a second support component, a gear shaft 81-a second slide block, 811-a second clamp block, 82-a second drive link, 821-a second support end, 822-a second slide groove, 823-a second arc-shaped section, 83-a second bearing part, 831-a second mounting hole, 832-a second oblique slider, 84-a second mounting part, 841-a second gear shaft hole, 842-a second guide groove, 843-a second guide rod, 8431-a third boss, 85-a second gear, 86-a second gear rack, 861-a fourth boss, 87-a second mounting block, 871-a second oblique sliding groove, 88-a second flexible plate, 881-a second limit sliding groove, 89-a second gear shaft, 100-a bending part, 101-a first housing, 102-a second housing, 103-a first support block, 104-a second support block, 105-a third support block, 106-a fourth support block, 107-a third arc-shaped slider, 107a third arc-shaped groove, 1011-a first mounting groove, 1021, a second mounting groove, X, the axis of the first connecting shaft, Y, the axis of the second connecting shaft, Z, the center of the circle of the first supporting plate rotating around the first arc-shaped groove, W, the center of the circle of the second supporting plate rotating around the second arc-shaped groove, a line segment XZ represents the length of the first crank, a line segment YW represents the length of the second crank, a line segment XY represents the connecting rod, a line segment ZW represents the rack, L, the first direction, J, the second direction and G, and the third direction.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, directly disposed or connected, or indirectly disposed or connected through intervening elements or intervening structures; the terms "parallel", "perpendicular" and "flush" are to be understood in a broad sense, e.g. the actual angle between the two parts may be 89 or 91, due to assembly tolerances or tolerances inherent in the parts, unless otherwise specified, as perpendicular.

In addition, in the embodiments of the present invention, if there are terms of orientation or positional relationship indicated by "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., it is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The various features and embodiments described in the embodiments may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and in order to avoid unnecessary repetition, various possible combinations of features/embodiments in the present invention will not be described in detail.

In the present invention, the intermediate housing is used as a reference, and the horizontal plane is determined according to the orientation of the intermediate housing, and is defined as follows: the first direction L is located on the horizontal plane and parallel to the direction of the longest side of the middle housing 4, the second direction J is perpendicular to the horizontal plane, the third direction G is located on the horizontal plane and perpendicular to the first direction L.

As shown in fig. 1 and fig. 2, the folding device 1 provided in the embodiment of the present invention can be applied to electronic display devices such as smart phones and tablet computers, and can be folded or unfolded to solve the problem of inconvenience in carrying a large-screen display device due to its large size. The folding device 1 comprises a first supporting plate 2, a second supporting plate 3, a synchronous rotating mechanism, a supporting component and a middle shell 4, wherein the synchronous rotating mechanism is arranged on the middle shell 4, the synchronous rotating mechanism is used for driving the first supporting plate 2 and the second supporting plate 3 to synchronously rotate relative to the middle shell 4 so as to realize folding or unfolding, the supporting component is arranged between the first supporting plate 2 and the second supporting plate 3, and in the process of switching the folding state to the unfolding state, the first supporting plate 2 and the second supporting plate 3 drive the supporting component to move (ascend along a second direction J) to be close to the first supporting plate 2 and the second supporting plate 3, so that the supporting component supports and fills a gap between the first supporting plate 2 and the second supporting plate 3, namely the unfolding state, and the first supporting plate 2, the second supporting plate 3 and the supporting component are positioned on the same plane (the same plane referred to in the invention is not an absolute concept, in practical applications, the support assembly may be slightly below or above the plane due to assembly errors or part tolerances), and by the action of the support assembly, objects (e.g., flexible screens) lying on the first and second support plates 2 and 3 are prevented from getting into the gap between the first and second support plates 2 and 3; and in the in-process that the expansion state switched into fold condition, first backup pad 2 and 3 drive supporting component movements of second backup pad (sink along second direction J) keep away from first backup pad 2 and second backup pad 3, provide the space of dodging, avoid the supporting component card between first backup pad 2 and second backup pad 3, influence first backup pad 2 and second backup pad 3 and rotate in opposite directions.

Optionally, as shown in fig. 4 and 5, the support assembly includes a first support assembly 7 and a second support assembly 8, the first support assembly 7 includes a first sliding support plate 71 and a first moving assembly, the second support assembly 8 includes a second sliding support plate 81 and a second moving assembly, the first sliding support plate 71 and the second sliding support plate 81 are spaced apart along a first direction L of the middle housing 4, the first moving assembly is configured to drive the first sliding support plate 71 to rotate with the first support plate 2 to approach or separate from the first support plate 2 and the second support plate 3, the second moving assembly is configured to drive the second sliding support plate 81 to rotate with the second support plate 3 to approach or separate from the first support plate 2 and the second support plate 3, wherein the first direction L of the middle housing 4 is located on a horizontal plane.

Specifically, in the process of switching from the folded state to the unfolded state, under the action of the first moving assembly, the first sliding support plate 71 gradually approaches the first support plate 2 and the second support plate 3 along with the rotation of the first support plate 2, and under the action of the second moving assembly, the second sliding support plate 81 gradually approaches the first support plate 2 and the second support plate 3 along with the rotation of the second support plate 3; in the process of switching the unfolding state to the folding state, under the action of the first moving component, the first sliding support plate 71 gradually gets away from the first support plate 2 and the second support plate 3 along with the rotation of the first support plate 2, and under the action of the second moving component, the second sliding support plate 81 gets away from the first support plate 2 and the second support plate 3 along with the rotation of the second support plate 3.

The first motion assembly includes a first drive link 72, a first bearing 73 and a first mounting block 77, and the second motion assembly includes a second drive link 82, a second bearing 83 and a second mounting block 87.

As shown in fig. 4 and 5, a first bearing portion 73 is connected to one end of the first sliding supporting plate 71 facing the second sliding supporting plate 81, a first driving link 72 is located between the first sliding supporting plate 71 and the second sliding supporting plate 81, the first driving link 72 is close to the first bearing portion 73, one end of the first driving link 72 is fixedly connected to the first supporting plate 2, the other end of the first driving link 72 is connected to a first branch end 721, a middle portion of the first driving link 72 is recessed toward the middle housing 4 to form a first arc-shaped section 723, the first branch end 721 is provided with a first sliding chute 722, the first bearing portion 73 is connected to a first sliding member 724, the first sliding member 724 is slidably connected to the first sliding chute 722, and the first sliding member 724 is further rotatable relative to the first sliding chute 722, the first mounting block 77 is fixedly mounted to the middle housing 4, the first mounting block 77 is provided with a first inclined sliding chute 771 inclined relative to the second direction J of the middle housing 4, the first inclined slider 732 is further connected to the first bearing portion 73, and the first inclined slider 732 is slidably connected to the first inclined slide groove 771. The first driving link 72 rotates with the first supporting plate 2, and through the cooperation of the first sliding part 724 and the first sliding chute 722, the first driving link 72 drives the first sliding supporting plate 71 to move along the first inclined sliding chute 771.

The method specifically comprises the following steps: first backup pad 2 rotates, and then drives first drive connecting rod 72 and rotates, because first carrier 73 rotates through first slider 724 and first spout 722 of first branch end 721 and connects, and through the direction cooperation of first oblique slider 732 and first oblique spout 771, can drive first carrier 73 and slide along first oblique spout 771 when first drive connecting rod 72 rotates, and first sliding support plate 71 can move along with first carrier 73 simultaneously, realizes that first sliding support plate 71 rises or moves down along first oblique spout 771. Specifically, when the first support plate 2 rotates away from the second support plate 3, the first sliding bracket 71 moves upward along the first inclined slide groove 771, and when the first support plate 2 rotates toward the second support plate 3, the first sliding bracket 71 moves downward along the first inclined slide groove 771.

At the same time, by the sliding engagement of the first slider 724 with the first runner 722. Thus, at the beginning of the rotation process of the first support plate 2 toward the second support plate 3, the first sliding bracket 71 sinks along the first inclined slide groove 771 of the first mounting block 77 as the first driving link 72 rotates. When the first driving link 72 rotates to a certain angle, the first sliding member 724 is no longer constrained by the first sliding slot 722, and at this time, the first sliding tray 71 remains stationary, and the first branch end 721 slides relative to the first sliding tray 71 through the first sliding slot 722. That is, it is only necessary to ensure that the sinking distance of the first sliding support plate 71 meets the requirement, and it is not necessary to make the first sliding support plate 71 sink along with the rotation of the first support plate 2 in the whole course, so that the size of the middle housing 4 in the vertical direction (i.e., the thickness of the middle housing 4) can be reduced, which is beneficial to the light and thin design of the folding device 1. Wherein the first arc-shaped section 723 of the first driving link 72 is used for providing avoidance when the first sliding supporting plate 71 moves downwards.

As shown in fig. 4, 5 and 7, one end of the second sliding bracket 81 facing the first sliding bracket 71 is connected with a second bearing portion 83, the second driving link 82 is located between the first sliding bracket 71 and the second sliding bracket 81, the second driving link 82 is close to the second bearing portion 83, one end of the second driving link 82 is connected with the second support plate 3, the other end of the second driving link 82 is connected with a second branch end 824, the middle portion of the second driving link 82 is recessed towards the middle housing 4 to form a second arc-shaped section 823, the second branch end 824 is provided with a second sliding slot 822, the second bearing portion 83 is connected with a second sliding member 824, the second sliding member 824 is slidably connected with the second sliding slot 822, and the second sliding member 824 is rotatable relative to the second sliding slot 822, the second mounting block 87 is mounted on the middle housing 4, the second mounting block 87 is provided with a second inclined sliding slot 871 inclined relative to the second direction J of the middle housing 4, the second bearing portion 83 is further connected with a second inclined sliding block 832, the second inclined sliding block 832 is slidably connected to the second inclined sliding groove 871, and the second driving link 82 rotates along with the second supporting plate 3 and enables the second driving link 82 to drive the second sliding supporting plate 81 to move along the second inclined sliding groove 871 through the matching of the second sliding member 824 and the second sliding groove 822. The working principle of the second supporting component 8 is the same as that of the first supporting component 7, and for avoiding redundancy, please refer to the above description of the first supporting component 7.

In some embodiments, the slot lengths of the first and second sliding

slots

722 and 822 point in the third direction G when the first and

second support plates

2 and 3 are in the unfolded state, and the slot lengths of the first and second sliding

slots

722 and 822 point in the second direction J when the first and

second support plates

2 and 3 are in the folded state.

Specifically, as shown in fig. 7, the cross-section of the first inclined slider 732 and the cross-section of the second inclined slider 832 may be cross-shaped or T-shaped, and correspondingly, the cross-section shapes of the first inclined sliding groove 771 and the first inclined sliding groove 871 are similar to the cross-section shapes of the first inclined slider 732 and the second inclined slider 832, respectively, and thus the stability of the movement of the first inclined slider 732 and the second inclined slider 832 may be further ensured.

Specifically, as shown in fig. 4 and 7, the first bearing portion 73 is provided with a first mounting hole 731, and the first sliding member 724 can be a shaft pin, which is mounted in the first mounting hole 731; the second bearing portion 73 is provided with a second mounting hole 831, and the second sliding member 824 may be a shaft pin mounted in the second mounting hole 831.

Alternatively, as shown in fig. 4 to 6, the first sliding plate 71 is connected with a first mounting portion 74 at an end away from the second sliding plate 81, the first mounting portion 74 is provided with a first guide groove 742, the intermediate housing 4 is provided with a first guide rod 743, the first guide rod 743 is obliquely disposed with respect to the second direction J of the intermediate housing 4 such that the first guide rod 743 is parallel to the first oblique sliding groove 771, that is, an included angle between the first guide rod 743 and the second direction J is equal to an included angle between the first oblique sliding groove 771 and the second direction J, and the first guide groove 742 is slidably connected to the first guide rod 743 such that the first mounting portion 74 can slide along the first guide rod 743. Through the guiding action of the first guide rod 743 and the first guide groove 742, the cooperation of the first oblique slider 732 and the first oblique sliding groove 771 is combined, so that the two ends of the first sliding supporting plate 71 can be ensured to synchronously ascend or descend, and the movement stability is good.

The second sliding supporting plate 81 is connected with a second installation part 84 at one end far away from the first sliding supporting plate 71, the second installation part 84 is provided with a second guide groove 842, the middle housing 4 is provided with a second guide rod 843, the second guide rod 843 is obliquely arranged relative to the second direction J of the middle housing 4, so that the second guide rod 843 is parallel to the second oblique sliding groove 871, namely, the included angle between the second guide rod 843 and the second direction J is equal to the included angle between the second oblique sliding groove 871 and the second direction J, the second guide groove 842 is slidably connected to the second guide rod 843, so that the second installation part 84 can slide along the second guide rod 843. Through the guiding action of the second guide rod 843 and the second guide groove 842, the cooperation of the second inclined sliding block 832 and the second inclined sliding groove 871 is combined, so that the two ends of the second sliding supporting plate 81 can be further ensured to synchronously ascend or descend, and the motion stability is good.

Alternatively, as shown in fig. 1, 2 and 7, the synchronous rotating mechanism includes a rotating component 5 and a synchronizing component 6, the synchronizing component 6 is used for controlling the first support plate 2 and the second support plate 3 to rotate synchronously, the synchronizing component 6 is located between the first support plate 2 and the second support plate 3, and the rotating component 5 is used for guiding the first support plate 2 and the second support plate 3 to rotate according to a set track. And the ends of the first support plate 2 and the second support plate 3 close to the intermediate housing 4 are close to each other during the switching from the folded state to the unfolded state. In this way, the distance between the first support plate 2 and the second support plate 3 can be effectively reduced; in the process of switching the unfolding state to the folding state, the ends of the first support plate 2 and the second support plate 3 close to the middle shell 4 are far away from each other, so that an accommodating space 20 is formed between the first support plate 2 and the second support plate 3 by combining the support components, and when the folding display device with the flexible screen is applied, the accommodating space 20 can be used for accommodating the bending part 100 of the flexible screen.

Alternatively, as shown in fig. 2 and 9 to 14, the rotating assembly 5 includes a first connecting member 51a, a second connecting member 51b, a first arc-shaped sliding block 52a and a second arc-shaped sliding block 52b, the first supporting plate 2 is connected with the first connecting member 51a at an end close to the first sliding supporting plate 71, the second supporting plate 3 is connected with the second connecting member 51b at an end close to the second sliding supporting plate 81, the first connecting member 51a is connected with the first arc-shaped sliding block 52a at a side facing away from the first sliding supporting plate 71, the second connecting member 51b is connected with the second arc-shaped sliding block 52b at a side facing away from the second sliding supporting plate 81, the intermediate housing 4 is provided with a first arc-shaped sliding groove (not shown) and a second arc-shaped sliding groove 53b at two opposite side walls along the first direction L thereof, the first arc-shaped sliding groove and the second arc-shaped sliding groove 53b are arranged opposite to each other, the first arc-shaped sliding block 52a is slidably connected to the first arc-shaped sliding groove, and the second arc-shaped sliding block 52b is slidably connected to the second arc-shaped sliding groove 53 b. Specifically, the first and second arc chutes 53b are each provided along the third direction G of the intermediate case 4. Thus, through the sliding fit of the first arc-shaped sliding block 52a and the first arc-shaped sliding groove and the sliding fit of the second arc-shaped sliding block 52b and the second arc-shaped sliding groove 53b, in the process of switching the unfolding state to the folding state, the contact areas of the first arc-shaped sliding block 52a and the first arc-shaped sliding groove and the second arc-shaped sliding block 52b and the second arc-shaped sliding groove 53b become smaller gradually, that is, the first arc-shaped sliding block 52a partially exits from the first arc-shaped sliding groove, and the second arc-shaped sliding block 52b partially exits from the second arc-shaped sliding groove 53b, so that the sides of the first support plate 2 and the second support plate 3 close to the middle shell 4 are far away from each other; in the process of switching from the folded state to the unfolded state, the contact areas of the first arc-shaped sliding block 52a and the first arc-shaped sliding groove and the second arc-shaped sliding block 52b and the second arc-shaped sliding groove 53b become larger gradually, that is, the length of the first arc-shaped sliding block 52a extending into the first arc-shaped sliding groove becomes longer, and the length of the second arc-shaped sliding block 52b extending into the second arc-shaped sliding groove 53b becomes longer, so that the first support plate 2 and the second support plate 3 are close to each other on the side close to the middle housing 4.

Specifically, the first connecting member 51a and the first arc slider 52a, and the second connecting member 51b and the second arc slider 52b may be an integrally molded structure.

Alternatively, the synchronizing assembly 6 may be provided with one, two or more sets; when there are at least two sets of synchronizing assemblies 6, the at least two sets of synchronizing assemblies 6 are arranged at intervals along the first direction L of the middle housing 4. The stability of the synchronous movement of the first supporting plate 2 and the second supporting plate 3 is ensured by arranging more than two groups of synchronous assemblies 6.

Alternatively, as shown in fig. 16, the synchronizing assembly 6 includes a first link 61, a second link 62, a third link 63 and a fourth link 64, the first link 61 and the second link 62 are spaced apart from each other along the first direction L of the middle housing 4, one end of the third link 63 is rotatably connected to the first link 61 and the second link 62 through a first connecting shaft 65, the other end of the third link 63 is fixedly connected to the first support plate 2, one end of the fourth link 64 is rotatably connected to the first link 61 and the second link 62 through a second connecting shaft 66, and the other end of the fourth link 64 is fixedly connected to the second support plate 3, such that the third link 63 and the fourth link 64 rotate with the first support plate 2 and the second support plate 3, respectively. The third link 63 and the fourth link 64 are spaced apart from each other along the second direction J of the middle housing 4, and the first link 61 and the second link 62 are slidable along the third direction G of the middle housing 4 (with the first link 61 and the second link 62 as a whole), specifically, the first link 61 and the second link 62 are slidable within the middle housing 4 and relative to the middle housing 4 toward one side of the first support plate 2 or the second support plate 3. As shown in fig. 17, the operation mode of the synchronizing module 6 is equivalent to an inverse parallelogram mechanism, wherein the projection distance from the center Z of the first support plate 2 rotating around the first arc-shaped chute to the center of the third link 63 rotating (the axis X of the first connecting shaft 65) is regarded as a first crank length XZ, the projection distance from the center W of the second support plate 3 rotating around the second arc-shaped chute 53b to the center of the fourth link 64 rotating (the axis Y of the second connecting shaft 66) is regarded as a second crank length YW, the center distance between the first connecting shaft 65 and the second connecting shaft 66 is regarded as a link XY, the projection distance from the center W of the first support plate 2 rotating around the first arc-shaped chute and the center of the second support plate 3 rotating around the second arc-shaped chute 53b is regarded as a frame ZW., and the third link 63 rotates with the first support plate 2, the center X of the inverse parallelogram mechanism formed by the synchronizing module 6 is shown in fig. 18, The fourth connecting rod 64 rotates along with the second supporting plate 3, due to the constraint of the first connecting rod 61 and the second connecting rod 62, the third connecting rod 63 and the fourth connecting rod 64 can synchronously rotate, namely when the third connecting rod 63 rotates along the clockwise direction, the fourth connecting rod 64 rotates along the counterclockwise direction, or when the third connecting rod 63 rotates along the counterclockwise direction, the fourth connecting rod 64 rotates along the clockwise direction, and therefore the first supporting plate 2 and the second supporting plate 3 synchronously rotate in the opposite direction or synchronously rotate away from each other. The synchronous component 6 adopts the design of a link mechanism, utilizes the characteristics of the motion of the link mechanism, and compared with the design of synchronous rotation of gears in the traditional scheme, the synchronous component reduces the pressure of a unit contact surface, increases the contact area, is convenient for lubrication, can effectively reduce the noise generated in the folding process, and brings better sensory experience for users.

In some embodiments, the range of angular movement of the synchronizing assembly 6 is 45 ° -135 ° in the range of polar angles.

Optionally, as shown in fig. 2, 3, 9, 12 and 15, the folding device 1 further includes a first rack 76, a first gear 75, a first gear shaft 79, a second rack 86, a second gear 85 and a second gear shaft 89. The first gear 75 is disposed between the first mounting portion 74 and the first connecting member 51a, the first mounting portion 74 is provided with a first gear shaft hole 741, the first connecting member 51a is provided with a third sliding slot 511a, the first gear 75 is provided with a shaft hole, the first gear shaft 79 passes through the shaft hole to be connected with the first gear 75, one end of the first gear shaft 79 is connected to the first gear shaft hole 741, the other end of the first gear shaft 79 is slidably connected to the third sliding slot 511a, the first gear shaft 79 can also rotate relative to the third sliding slot 511a, the first rack 76 is obliquely disposed in the middle housing 4 relative to the second direction J, the first gear 75 is meshed with the first rack 76, and through cooperation between the first gear shaft 79 and the third sliding slot 511a, when the first sliding supporting plate 71 moves, the first gear 75 rolls along the first rack 76. The specific movement process is as follows: when the first sliding support plate 71 moves upward, the first sliding support plate 71 drives the first gear 75 to slide upward along the first rack 76, and when the first sliding support plate 71 moves downward, the first sliding support plate 71 drives the first gear 75 to slide downward along the first rack 76, so that the first sliding support plate 71 moves smoothly through the cooperation of the gear and the rack.

As shown in fig. 2 and 3, the second gear 85 is disposed between the second mounting portion 84 and the second connecting member 51b, the second mounting portion 84 is provided with a second gear hole 841, the second connecting member 51b is provided with a fourth sliding slot 511b, the second gear 85 has a shaft hole, the second gear shaft 89 passes through the shaft hole to be connected with the second gear 85, one end of the second gear shaft 89 is connected to the second gear hole 841, the other end of the second gear shaft 89 is slidably connected to the fourth sliding slot 511b, the second gear shaft 89 can also rotate relative to the fourth sliding slot 511b, the second rack 86 is disposed in the intermediate housing 4 obliquely relative to the second direction J, the second gear 85 is engaged with the second rack 86, and the second gear 85 rolls along the second rack 86 when the second sliding support plate 81 moves through the engagement of the second gear shaft 89 and the fourth sliding slot 511 b. The specific movement process is as follows: when the second sliding supporting plate 81 moves upward, the second sliding supporting plate 81 drives the second gear 85 to slide upward along the second rack 86, and when the second sliding supporting plate 81 moves downward, the second sliding supporting plate 81 drives the first gear 75 to slide downward along the second rack 86, so that the second sliding supporting plate 81 moves smoothly through the cooperation of the gear and the rack.

Meanwhile, when the sinking distance of the first sliding support plate 71 and the second sliding support plate 81 meets the requirement, the first connecting piece 51a can continuously slide relative to the first gear shaft 79 through the third sliding slot 511a, and the second connecting piece 51b can continuously slide relative to the second gear shaft 89 through the fourth sliding slot 511b, so that the first support plate 2 and the second support plate 3 can continuously rotate towards each other until the folding state is achieved.

In some embodiments, the angle between the first rack 76 and the second direction J may be equal to the angle between the first guide rod 743 and the second direction J, and the angle between the second rack 86 and the second direction J may be equal to the angle between the second guide rod 843 and the second direction J.

In some embodiments, the slot lengths of the third and fourth sliding

slots

511a and 511b point in the third direction G when the first and

second support plates

2 and 3 are in the unfolded state, and the slot lengths of the third and fourth sliding

slots

511a and 511b point in the second direction J when the first and

second support plates

2 and 3 are in the folded state.

Specifically, as shown in fig. 2, a first boss 761 and a second boss 7431 may be disposed in the middle housing 4, the first boss 761 is used for supporting and fixing the first rack 76, and the second boss 7431 is used for supporting and fixing the first guide rod 743. A third boss 8431 and a fourth boss 861 are further arranged in the middle housing 4, the third boss 8431 is used for supporting and fixing the second rack 86, and the fourth boss 861 is used for supporting and fixing the second guide rod 843.

In some embodiments, the second boss 7431 and the first guide rod 743 may be integrally formed, and the fourth boss 861 and the second guide rod 843 may be integrally formed.

Optionally, as shown in fig. 2, 4 and 5, the first support assembly 7 further comprises a first flexible plate 78 mounted to the first sliding blade 71; the second support assembly 8 further comprises a second flexible plate 88 mounted to the second sliding blade 81. When the first support plate 2 and the second support plate 3 are in the unfolded state, the plane where the first sliding support plate 71 and the second sliding support plate 81 are located is lower than the plane where the first support plate 2 and the second support plate 3 are unfolded, and the height difference between the plane where the first sliding support plate 71 and the second sliding support plate 81 are located and the plane where the first support plate 2 and the second support plate 3 are unfolded is equal to the thickness of the first flexible plate 78 or the second flexible support plate. By providing the first flexible sheet 78 and the second flexible sheet 88, the first flexible sheet 78 and the second flexible sheet 88 can effectively block the gap between the first support sheet 2 and the second support sheet 3 when the first support sheet 2 and the second support sheet 3 are unfolded.

Further, by using the flexible board, the rotation of the first support board 2 and the second support board 3 is not interfered on the premise that the gap between the first support board 2 and the second support board 3 is effectively shielded by the first flexible board 78 and the second flexible board 88 by utilizing the characteristic of the flexible board that the flexible board can be bent and deformed.

Alternatively, as shown in fig. 5 and 8, the first flexible board 78 is provided with a first limiting sliding groove 781, the first sliding supporting board 71 is provided with a first locking block 711, the first locking block 711 can be locked in the first limiting sliding groove 781, and the first locking block 711 can slide in a third direction G relative to the first limiting sliding groove 781;

the second flexible board 88 is provided with a second limiting sliding groove 881, the second sliding supporting plate 81 is provided with a second locking block 811, the second locking block 811 can be locked in the second limiting sliding groove 881, and the second locking block 811 can slide along the third direction G relative to the second limiting sliding groove 881. Through the cooperation of spacing spout and screens piece, ensure that first flexplate 78 can follow first slip layer board 71, second flexplate 88 can rise or sink along with first slip layer board 71 in step, simultaneously, because first slip layer board 71 is to first flexplate 78, second slip layer board 81 plays the supporting role to second flexplate 88, when first flexplate 78 and second flexplate 88 receive first backup pad 2 and second backup pad 3 extrusion respectively along the both sides of third direction G, take place the bellied deformation that makes progress, through making first flexplate 78 and second flexplate 88 have gliding space relative first slip layer board 71 and second slip layer board 81 respectively, thereby realize that first flexplate 78 and second flexplate 88 are bellied to making progress and are out of shape.

Specifically, the first flexible plate 78 and the second flexible plate 88 may be made of a silicone strip, flexible resin, elastic steel, or the like, so that the first flexible plate 78 and the second flexible plate 88 have good elastic deformation performance, the problem of fracture due to stress fatigue in the using process is avoided, and the reliability of the device is ensured.

Alternatively, as shown in fig. 22, the first flexible board 78 and the second flexible board 88 are respectively provided with arched surfaces 782 on two opposite sides in the third direction G of the middle housing 4, and the arched surfaces 782 are recessed away from the middle housing 4. In this way, when the first flexible plate 78 and the second flexible plate 88 are pressed by the first support plate 2 and the second support plate 3, the upward convex deformation of the first flexible plate 78 and the second flexible plate 88 is facilitated.

Alternatively, as shown in fig. 2, 9, 10 to 12, the first support plate 2 is connected to the first receiving portion 21 at one end close to the intermediate housing 4, the second support plate 3 is connected to the second receiving portion 31 at one end close to the intermediate housing 4, and the first receiving portion 21 and the second receiving portion 31 may be arc-shaped plates. When the first support plate 2 and the second support plate 3 are folded, the cross section of the accommodating space 20 formed by the first support plate 2, the second support plate 3 and the support component is in a drop shape. By arranging the first accommodating part 21 and the second accommodating part 31, on one hand, in order to further increase the accommodating space 20, when the bending part 100 of the flexible screen is accommodated in the accommodating space 20, the first accommodating part 21 and the second accommodating part 31 are in curved surface contact with the bending part 100 of the flexible screen, so that the bending part of the flexible screen is not extruded, and the crease of the flexible screen caused by folding is effectively reduced; on the other hand, by arranging the accommodating part, after the first supporting plate 2 and the second supporting plate 3 are close to each other, the first supporting plate 2 and the second supporting plate 3 are kept in a parallel state as much as possible, and the whole structure is attractive.

In the process of switching the unfolded state to the folded state, the first receiving portion 21 and the second receiving portion 31 rotate to gradually come into contact with the arch surfaces 782 on both sides of the first flexible board 78 and the second flexible board 88, and respectively press the arch surfaces 782 of the first flexible board 78 and the second flexible board 88, the first flexible board 78 and the second flexible board 88 are pressed, the first limit sliding groove 781 slides relative to the first catch block 711 and the second limit sliding groove 881 slides relative to the second catch block 811, so that the first flexible board 78 and the second flexible board 88 are deformed convexly upwards (since the flexible boards are supported by the sliding support board, downward sinking does not occur), until the first flexible board 78 sinks to a predetermined position along with the first sliding support board 71 and the second flexible board 88 along with the second sliding support board 81, the first receiving portion 21 and the second receiving portion 31 are separated from the arch surface 782, and the first flexible plate 78 and the second flexible plate 88 are restored to the original state; in the process of switching the folded state to the unfolded state, the first receiving portion 21 and the second receiving portion 31 gradually come into contact with the arch surfaces 782 on the two sides of the first flexible board 78 and the second flexible board 88 due to rotation, and respectively press the arch surfaces 782 of the first flexible board 78 and the second flexible board 88, the first flexible board 78 and the second flexible board 88 are pressed, the first limiting sliding groove 781 slides relative to the first clamping position block 711 and the second limiting sliding groove 881 relative to the second clamping position block 811, so that the first flexible board 78 and the second flexible board 88 are protruded and deformed upwards, until the first flexible board 78 rises to a predetermined position along with the first sliding support plate 71 and the second flexible board 88 along with the second sliding support plate 81, the first receiving portion 21 and the second receiving portion 31 are separated from the arch surfaces 782, and the first flexible board 78 and the second flexible board 88 return to the original state.

The invention also provides a folding display device with the flexible screen, and the display device can be a smart phone, a tablet personal computer and the like. In this embodiment, a smart phone is taken as an example, as shown in fig. 19 to fig. 22, the smart phone includes a first housing 101, a second housing 102, a flexible screen (not shown in the figure), and the folding device 1, where a first support plate 2 of the folding device 1 is fixedly connected to the first housing 101, and a second support plate 3 of the folding device 1 is fixedly connected to the second housing 102, so that the first housing 101 and the second housing 102 can synchronously rotate to realize folding or unfolding, where the first housing 101 and the second housing 102 are used for carrying the flexible screen. By means of folding, the using requirements of a user on large-screen display and portability of the display device are met. Meanwhile, when the foldable display device is unfolded, the support assembly of the folding device 1 moves upwards along the second direction J to support the portion of the flexible screen between the first casing 101 and the second casing 102, so that the flexible screen is prevented from being trapped in the gap between the first support plate 2 and the second support plate 3 when a user touches the flexible screen; when the foldable display device is folded, the bending portion 100 of the flexible screen between the first housing 101 and the second housing 102 is accommodated in the accommodating space 20 of the folding apparatus 1, so that the bending portion 100 of the flexible screen can be naturally bent to effectively fade the crease lines generated on the screen. And good use experience is brought to the user. Various functional devices, such as a battery, a main board, a speaker, a receiver, a camera module, an antenna, a storage, a power connector, an earphone connector, and the like, are mounted in the first housing 101 and the second housing 102, and are used for implementing various functions of the foldable display device.

Alternatively, the first support plate 2 is laid flat on the surface of the first housing 101, and the second support plate 3 is laid flat on the surface of the second housing 102. As shown in fig. 23, specifically: the first housing 101 may be provided with a first mounting groove 1011 on a side close to the folding device 1, the first mounting groove 1011 is provided with a first supporting block 103 and a second supporting block 104 at two opposite ends along the first direction L of the middle housing 4, the first supporting block 2 is connected with the first supporting block 103 and the second supporting block 104 respectively, that is, the first supporting block 103 and the second supporting block 104 are used for supporting and fixing the first supporting block 2, and the distance from the first supporting block 103 and the second supporting block 104 to the upper surface of the first housing 101 is equal to the thickness of the first supporting block 2. The second housing 102 is provided with a second mounting groove 1021 on a side close to the folding device 1, the second mounting groove 1021 is provided with a third supporting block 105 and a fourth supporting block 106 at two opposite ends along the first direction L of the middle housing 4, the second supporting plate 3 is connected with the third supporting block 105 and the fourth supporting block 106 respectively, that is, the third supporting block 105 and the fourth supporting block 106 are used for supporting and fixing the second supporting plate 3, and the distance from the third supporting block 105 and the fourth supporting block 106 to the upper surface of the second housing 102 is equal to the thickness of the second supporting plate 3. As shown in fig. 24 and 25, the first support block 103 is adjacent to the second connecting member 51b of the folding device 1, the first support block 103 is connected with a third arc-shaped slider 107, the third arc-shaped slider 107 points to the second arc-shaped slider 52b, the middle housing 4 of the folding device 1 is further provided with a third arc-shaped chute 107a on the side wall provided with the second arc-shaped chute 53b, the third arc-shaped chute 107a and the second arc-shaped chute 53b are located on the same plane, the third arc-shaped slider 107 is slidably connected to the third arc-shaped chute 107a, and the rotational stability of the first housing 101 is further ensured by the sliding fit of the first arc-shaped slider 52a and the first arc-shaped chute, and the sliding fit of the third arc-shaped slider 107 and the sliding chute 107 a. The fourth supporting block 106 is adjacent to the first connecting member 51a of the folding device 1, the fourth supporting block 106 is connected with a fourth arc-shaped slider, the fourth arc-shaped slider points to the first arc-shaped slider 52a, the middle housing 4 of the folding device 1 is further provided with a fourth arc-shaped chute (not shown in the figure) on the side wall provided with the first arc-shaped chute, the first arc-shaped chute and the fourth arc-shaped chute are located on the same plane, the fourth arc-shaped slider is connected to the fourth arc-shaped chute in a sliding manner, and the second arc-shaped slider 52b and the second arc-shaped chute 53b are passed through, and the fourth arc-shaped slider is in sliding fit with the fourth arc-shaped chute, so that the rotating stability of the second housing 102 is further ensured. The movement principle of the second arc-shaped sliding block 52b and the second arc-shaped sliding chute 53b and the movement principle of the fourth arc-shaped sliding block and the fourth arc-shaped sliding chute are the same as the movement principle of the first arc-shaped sliding block 52a and the first arc-shaped sliding chute. The third arc-shaped slider 107 is connected to the first supporting block 103, and the fourth arc-shaped slider is connected to the fourth supporting block 106, so that the folding device 1 has a compact structure, and is beneficial to realizing the lightness and thinness of the display device.

The folding device 1 and the folding display equipment with the flexible screen provided by the embodiment of the invention have the following advantages:

1. the folding device 1 of the invention can realize folding and unfolding of the display equipment, can meet the use requirements of users on large screen display and convenient carrying, and meanwhile, after the folding display equipment is folded, the bending part 100 of the flexible screen is accommodated in the accommodating space 20 of the folding device 1, so that the bending part 100 of the flexible screen can be naturally bent, thereby effectively weakening the formation of screen creases;

2. adopt link mechanism to realize the synchronous rotation of first backup pad 2 and second backup pad 3, compare with the mode that the tradition adopted synchronous gear, reduced unit contact surface pressurized, increased area of contact and be convenient for lubricate, the effectual noise that has reduced folding display device and produce at folding in-process.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A folding device is characterized by comprising a first supporting plate, a second supporting plate, a synchronous rotating mechanism, a supporting assembly and a middle shell, wherein the synchronous rotating mechanism is installed on the middle shell and used for driving the first supporting plate and the second supporting plate to synchronously rotate relative to the middle shell so as to realize folding or unfolding; and in the process of switching from the unfolding state to the folding state, the first supporting plate and the second supporting plate drive the supporting component to move away from the first supporting plate and the second supporting plate to provide an avoiding space.

2. The folding apparatus as claimed in claim 1, wherein the support assembly comprises a first support assembly and a second support assembly, the first support assembly comprises a first sliding plate and a first moving assembly, the second support assembly comprises a second sliding plate and a second moving assembly, the first sliding plate and the second sliding plate are spaced apart from each other along a first direction of the middle housing, the first moving assembly is configured to drive the first sliding plate to rotate with the first support plate to approach or separate from the first support plate and the second support plate, the second moving assembly is configured to drive the second sliding plate to rotate with the second support plate to approach or separate from the first support plate and the second support plate, wherein the first direction of the middle housing is on a horizontal plane.

3. The folding apparatus as claimed in claim 2, wherein the first moving assembly includes a first driving link, a first carrying portion and a first mounting block, the first sliding support plate has one end connected to the first carrying portion toward the second sliding support plate, the first driving link is located between the first sliding support plate and the second sliding support plate, the first driving link is close to the first carrying portion, one end of the first driving link is connected to the first supporting plate, the other end of the first driving link is connected to a first supporting end, the first supporting end is provided with a first sliding slot, the first carrying portion has a first sliding member connected thereto, the first sliding member is slidably connected to the first sliding slot, the first sliding member is further rotatable relative to the first sliding slot, and the first mounting block is mounted to the middle housing, the first mounting block is provided with a first inclined sliding groove which is inclined relative to the second direction of the middle shell, the first bearing part is further connected with a first inclined sliding block, the first inclined sliding block is connected to the first inclined sliding groove in a sliding mode, the first driving connecting rod rotates along with the first supporting plate and enables the first driving connecting rod to drive the first sliding supporting plate to move along the first inclined sliding groove through the matching of the first sliding piece and the first sliding groove;

4. A folding apparatus as claimed in claim 3, wherein said first drive link has a first arcuate section formed by a medial portion thereof that is concave toward said intermediate housing, and said second drive link has a second arcuate section formed by a medial portion thereof that is concave toward said intermediate housing.

5. The folding apparatus as claimed in claim 3, wherein said first sliding plate is connected to a first mounting portion at an end thereof remote from said second sliding plate, said first mounting portion is provided with a first guide groove, said intermediate housing is provided with a first guide bar parallel to said first inclined slide groove, and said first guide groove is slidably connected to said first guide bar;

6. The folding apparatus as claimed in claim 5, wherein said synchronous rotating mechanism comprises a rotating component and a synchronizing component, said synchronizing component is disposed between said first supporting plate and said second supporting plate, said synchronizing component is used for controlling said first supporting plate and said second supporting plate to rotate synchronously, said rotating component is used for guiding said first supporting plate and said second supporting plate to rotate along a set track, and during the process of switching from the folded state to the unfolded state, the ends of said first supporting plate and said second supporting plate close to said middle housing approach each other; in the process of switching from the unfolded state to the folded state, one ends, close to the middle shell, of the first supporting plate and the second supporting plate are far away from each other.

7. The folding apparatus as claimed in claim 6, wherein said rotating assembly includes a first connecting member, a second connecting member, a first arc-shaped sliding block and a second arc-shaped sliding block, said first supporting plate is connected to said first connecting member at an end close to said first sliding plate, said second supporting plate is connected to said second connecting member at an end close to said second sliding plate, said first connecting member is connected to said first arc-shaped sliding block at a side facing away from said first sliding plate, said second connecting member is connected to said second arc-shaped sliding block at a side facing away from said second sliding plate, said intermediate housing is provided with a first arc-shaped sliding groove and a second arc-shaped sliding groove facing each other at two opposite side walls along said first direction, said first arc-shaped sliding block is slidably connected to said first arc-shaped sliding groove, the second arc-shaped sliding block is connected to the second arc-shaped sliding groove in a sliding mode.

8. A folding apparatus according to claim 6, wherein said synchronizing assemblies are provided in one, two or more sets; when the synchronous assemblies are at least two groups, the synchronous assemblies are arranged at intervals along the first direction of the middle shell.

9. The folding apparatus as claimed in claim 8, wherein said synchronizing assembly includes a first link, a second link, a third link and a fourth link, said first link and said second link being spaced apart in a first direction of said intermediate housing, one end of said third link being rotatably connected to said first link and said second link, respectively, via a first connecting shaft, the other end of said third link being connected to said first support plate, one end of said fourth link being rotatably connected to said first link and said second link, respectively, via a second connecting shaft, the other end of said fourth link being connected to said second support plate, said third link and said fourth link being spaced apart in a third direction of said intermediate housing, and said first link and said second link being slidable in a second direction of said intermediate housing, the third direction of the middle shell is positioned on the horizontal plane, and the third direction of the middle shell is perpendicular to the first direction of the middle shell.

10. The folding apparatus as claimed in claim 7, further comprising a first rack, a first gear shaft, a second rack, a second gear and a second gear shaft, wherein said first gear is disposed between said first mounting portion and said first connecting member, said first mounting portion is provided with a first gear hole, said first connecting member is provided with a third sliding slot, said first gear shaft passes through said first gear, and one end of said first gear shaft is rotatably connected to said first gear hole, and the other end of said first gear shaft is slidably connected to said third sliding slot, said first gear shaft is further rotatable relative to said third sliding slot, said first rack is mounted in said intermediate housing, said first rack is disposed obliquely relative to said second direction of said intermediate housing, said first gear is engaged with said first rack, through the matching of the first gear shaft and the third sliding chute, when the first sliding supporting plate moves, the first gear rolls along the first rack;

11. The folding apparatus of claim 2 wherein said first support assembly further comprises a first flexible plate mounted to said first sliding tray; the second support assembly further includes a second flexible plate mounted to the second sliding blade.

12. The folding apparatus as claimed in claim 11, wherein said first flexible board is provided with a first position-limiting sliding groove, said first sliding supporting board is provided with a first position-limiting block, said first position-limiting sliding groove is engaged with said first position-limiting block, and said first position-limiting sliding groove is slidably engaged with said first position-limiting block;

13. A folding apparatus as claimed in claim 12, wherein said first flexible sheet and said second flexible sheet are provided with arcuate surfaces on opposite sides of said intermediate housing in said third direction, said arcuate surfaces being concave away from said intermediate housing.

14. The folding apparatus of claim 1, wherein said first support plate is connected to a first receiving portion at an end adjacent to said intermediate housing, said second support plate is connected to a second receiving portion at an end adjacent to said intermediate housing, and said first receiving portion and said second receiving portion are arcuate plates.

15. A folding display device with a flexible screen, comprising a first housing, a second housing, a flexible screen and a folding apparatus according to any one of claims 1 to 14, a first support plate of the folding apparatus being connected to the first housing and a second support plate of the folding apparatus being connected to the second housing, the first housing and the second housing being adapted to carry the flexible screen.

16. The foldable display device with a flexible screen of claim 15, wherein the first housing is provided with a first mounting groove at a side adjacent to the folding means, the first mounting groove is provided with a first support block and a second support block at opposite ends in a first direction of the middle housing, the first support block is connected to the first support block and the second support block, respectively, the second housing is provided with a second mounting groove at a side adjacent to the folding means, the second mounting groove is provided with a third support block and a fourth support block at opposite ends in the first direction of the middle housing, respectively, the second support block is connected to the third support block and the fourth support block, respectively, the first support block is adjacent to the second connector of the folding means, the first support block is connected to a third arc slider, and the middle housing of the folding means is further provided with a third arc slider at a side wall provided with the second arc groove The groove, third arc slider sliding connection in the third arc wall, the fourth supporting shoe with the first connecting piece of folding device is adjacent, the fourth supporting shoe is connected with fourth arc slider, folding device's middle casing is being provided with the lateral wall of first arc wall still is provided with the fourth arc wall, fourth arc slider sliding connection in the fourth arc wall.