CN115883700A - Folding screen device and hinge assembly - Google Patents

Abstract

The embodiment of the application provides a folding screen equipment and hinge subassembly, through set up elastic component on main shaft mechanism, and be connected elastic component's first end and main shaft mechanism, rotate elastic component's second end at slewing mechanism when flattening the state with the first end butt of swing arm, so that elastic component is in compression state under the support of swing arm, and guarantee that elastic component rotates the compression volume when flattening the state to be greater than the compression volume when rotating to folding the state at slewing mechanism, thereby make this elastic component drive the swing arm under the effect of elasticity and keep away from the main shaft mechanism and remove, make the main shaft mechanism removal be kept away from to the structure of swing arm second end, thus, flexible screen just under the drive of swing arm and structure toward the direction exhibition of keeping away from main shaft mechanism flat, thereby when having avoided the hinge subassembly to be in flattening the state, the hunch-up condition appears in slewing mechanism and main shaft mechanism's junction in flexible screen.

Description

Folding screen device and hinge assembly

Technical Field

The embodiment of the application relates to the technical field of terminals, in particular to a folding screen device and a hinge assembly.

Background

With the continuous development of mobile devices such as mobile phones, users have increasingly strong demands for large-screen mobile phones. In addition, with the development of flexible screen technology, flexible screen-based folding screen devices, such as folding screen mobile phones, have become emerging products in the industry today. In order to meet the differentiation requirements of different users, various folding mobile phones with screen inward folding and screen outward folding shapes are produced.

Currently, a foldable screen device, such as a foldable screen phone, generally includes a flexible screen, a hinge assembly, and two structural members connected by the hinge assembly, wherein the flexible screen is bonded to the hinge assembly and to inner surfaces of the two structural members. The hinge assembly comprises a main shaft mechanism and rotating mechanisms located on two sides of the main shaft mechanism, one end of each rotating mechanism is connected with the corresponding structural part, and the other end of each rotating mechanism is connected with the main shaft mechanism in a rotating mode.

However, when the hinge assembly is rotated to be in a flat state, the flexible screen on the hinge assembly is extremely likely to arch at the connection of the rotating mechanism and the spindle mechanism, thereby affecting the flatness of the flexible screen of the folding screen device in the flat state.

Disclosure of Invention

The embodiment of the application provides folding screen equipment and a hinge assembly, and can solve the problem that a flexible screen arches at the joint of a rotating mechanism and a main shaft mechanism when the hinge assembly is in a flat state, so that the flatness of the flexible screen of the folding screen equipment in the flat state is ensured.

The embodiment of the application provides a folding screen device, which comprises a flexible screen, two structural parts and a hinge assembly positioned between the two structural parts, wherein the flexible screen is positioned on the surfaces of the two structural parts and the hinge assembly on the same side;

the hinge assembly comprises a main shaft mechanism and two rotating mechanisms which are positioned on two sides of the main shaft mechanism and are rotationally connected with the main shaft mechanism;

each rotating mechanism comprises at least one swing arm, the first end of each swing arm is rotatably connected with the main shaft mechanism, and the second end of each swing arm is connected with the corresponding structural part;

the main shaft mechanism is provided with an elastic assembly, the first end of the elastic assembly is connected with the main shaft mechanism, the second end of the elastic assembly is used for abutting against the first end of the swing arm when the rotating mechanism rotates to the flattening state, and the compression amount of the elastic assembly when the rotating mechanism rotates to the flattening state is larger than that when the rotating mechanism rotates to the folding state.

The folding screen equipment that this application embodiment provided, through set up elastic component on main shaft mechanism, and the hinge subassembly is in the exhibition flat state, support elastic component through the first end of swing arm, make this elastic component be in compression state, and guarantee that the compressive capacity of this elastic component when slewing mechanism rotates to the exhibition flat state is greater than slewing mechanism and rotates the compressive capacity when to the folding state, thus, when slewing mechanism rotates to the exhibition flat state, elastic component receives the elasticity that produces after the compression of swing arm and can drive the swing arm and keep away from main shaft mechanism and remove, make the structure of swing arm one end keep away from main shaft mechanism and remove, thus, the flexible screen just is under the drive of swing arm and structure toward keeping away from main shaft mechanism's direction exhibition flat, thereby when having avoided the hinge subassembly to be in the exhibition flat state, the flexible screen appears the condition of hunch-up in slewing mechanism and main shaft mechanism's junction, the roughness of the flexible screen when the exhibition flat state of folding screen equipment has been guaranteed, the display performance of folding screen equipment has also been improved, the life of flexible screen is also improved.

In addition, this application embodiment is through setting up elastic component on main shaft mechanism, on the one hand, the spatial structure of main shaft mechanism has rationally been utilized, the space on the slewing mechanism has been practiced thrift, suitable setting space is provided for devices such as the flexible circuit version that set up on the slewing mechanism, radiators, on the other hand, main shaft mechanism compares in slewing mechanism, higher structural strength has, can ensure the assembly reliability and the activity reliability of the elastic component who sets up on main shaft mechanism like this, also make elastic component at the support of many times compression process to main shaft mechanism, can not cause the influence to main shaft mechanism's structural stability. In addition, the movable amplitude of the main shaft mechanism in the processes of flattening and folding the hinge assembly is small, so that the assembly stability of the elastic assembly can be ensured, the stable pushing of the elastic assembly to the swing arm is further ensured, and the flatness of the flexible screen in the flattening state of the folding screen device is ensured. In addition, the elastic component is arranged on the main shaft mechanism, so that the elastic component is convenient to detach, maintain and replace.

In an optional implementation mode, the spindle mechanism is provided with a mounting groove, and one side of the mounting groove, which faces the swing arm, is provided with an opening;

at least part of elastic component is accomodate in the mounting groove, elastic component's first end and the inner wall butt of mounting groove, and elastic component's second end passes through the first end cooperation of opening with the swing arm.

This application embodiment is through setting up the mounting groove on main shaft mechanism to accomodate elastic component's at least part in the mounting groove, with the structural stability of improvement elastic component on main shaft mechanism, thereby make elastic component more reliable to the drive of swing arm.

In an optional implementation manner, the spindle mechanism is further provided with an assembly hole, the first end of the swing arm is rotatably arranged in the assembly hole, the mounting groove is located on one side, back to the corresponding structural member, of the assembly hole, and the opening faces the assembly hole.

The first end of the swing arm can stably rotate around the main shaft mechanism without being inclined in the axial direction of the main shaft mechanism. In addition, when the elastic component in the mounting groove drives the first end of the swing arm to move, the swing arm can be ensured to move along the axial direction perpendicular to the main shaft mechanism, and the swing arm cannot deflect in the axial direction of the main shaft mechanism.

In an alternative implementation, the elastic component comprises an elastic piece and a push block;

the one end butt of elastic component is on the inner wall of mounting groove, the one end butt of ejector pad is at the other end of elastic component, the other end of ejector pad and the cooperation of the first end of swing arm, like this, when slewing mechanism rotates to the exhibition flat attitude, the first end of swing arm can extrude the ejector pad, make the elastic component be in the compression state, then when the atress at the other end of swing arm is less than the elasticity of this elastic component, this elastic component accessible ejector pad promotes the swing arm and keeps away from the main shaft mechanism and remove, and then make flexible screen exhibition flat.

In an optional implementation mode, the first end surface of the swing arm is provided with a limiting groove, the surface of the push block is provided with a protruding part, and when the swing arm rotates to the flattening state, the protruding part is embedded in the limiting groove to ensure that the push block can be stably abutted against the first end of the swing arm when the swing arm is pushed to move, and cannot be deviated in the moving direction perpendicular to the swing arm, so that the swing arm is further ensured to move along the axial direction perpendicular to the spindle mechanism under the pushing of the push block.

In an alternative embodiment, the wall of the limiting groove facing the pushing block has a step surface, and the projection rests on the step surface.

This application embodiment is through setting up the step face in the spacing groove of swing arm one end to with the bulge bearing on the ejector pad on this step face, like this, when the first end of swing arm and ejector pad butt, can ensure that the ejector pad can stabilize the butt with the first end of swing arm when promoting the swing arm and remove, and can not down slide along the first end surface of swing arm, and then ensure that the swing arm removes along the exhibition flat direction of hinge subassembly under the promotion of ejector pad.

In an optional implementation manner, at least part of the step surface is an arc-shaped surface, and at least one surface of the protruding part facing the step surface is an arc surface matched with the arc-shaped surface, so that the first end of the swing arm can better avoid the protruding part in the rotating process, and the stability of the push block in the mounting groove cannot be influenced.

In an alternative implementation, the push block comprises a main body part and at least one connecting part,

the one end and the connecting portion of main part are connected, and the other end of main part cooperates with the first end of swing arm, the bulge is located on the main part, the at least partial cover of elastic component is established on connecting portion to improve the steadiness of elastic component on the ejector pad, make the elastic component can stably compress or extend along connecting portion.

In an alternative implementation manner, the end face of the first end of the swing arm is provided with two first main surfaces, and the two first main surfaces are positioned at two sides of the limiting groove;

one surface of the main body part of the push block is provided with two second main surfaces which are respectively matched with the first main surfaces, and the two second main surfaces are respectively positioned at two sides of the protruding part;

and the first main surface and the second main surface are arc surfaces matched with each other, so that the first end of the swing arm can be better avoided with the push block in the rotating process, the stability of the push block in the mounting groove is ensured, and the swing arm is also ensured to stably rotate between a folding state and a flattening state.

In an optional implementation manner, at least two connecting parts are provided, and the at least two connecting parts are arranged at one end of the main body part at intervals;

the elastic pieces are at least two, and each elastic piece is sleeved on the corresponding connecting part respectively.

This application embodiment sets up two at least connecting portion through the one end interval at the main part to the elastic component is established to the cover on every connecting portion, makes the main part can stably move along the elasticity direction of elastic component, thereby promotes the swing arm and stably moves in the exhibition flat direction of hinge subassembly.

In an alternative implementation manner, two opposite inner walls of the mounting groove are provided with resisting parts, and an opening is formed between the two resisting parts;

the two opposite side walls of the push block are provided with extending parts, the extending parts are abutted to the mounting grooves by the abutting parts, and at least part of the push block extends out of the opening.

This application embodiment is through setting up the portion of keeping out on the inner wall of mounting groove to set up the extension on the lateral wall of ejector pad, this portion of keeping out of accessible keeps out the extension in the mounting groove on the one hand, avoids the ejector pad to break away from the mounting groove, and on the other hand has simplified the assembly process between ejector pad and the mounting groove, has improved the assembly efficiency between ejector pad and the mounting groove.

In an alternative implementation, the hinge assembly further comprises a cover plate covering the notch of the mounting groove;

wherein the notch is located on the surface of the spindle mechanism facing away from the flexible screen.

This application embodiment establishes a apron through the notch lid at the mounting groove to restriction elastic component is at the ascending activity of mounting groove depth direction, makes elastic component only in the horizontal direction activity, thereby guarantees that the swing arm removes along flat orientation of exhibition under elastic component's drive. In addition, the cover plate also has the functions of isolating external dust and the like, and the elastic assembly is prevented from being polluted and blocked, so that the service life of the elastic assembly is prolonged.

In an alternative implementation manner, each rotating mechanism comprises a plurality of swing arms, and the plurality of swing arms are arranged at intervals along the axial direction of the main shaft mechanism;

the elastic components are multiple, and the elastic components and the swing arms are arranged in a one-to-one correspondence mode.

This application embodiment is through setting up a plurality of elastic component to set up every elastic component respectively in corresponding swing arm one side, make every swing arm all can receive elastic component's drive when rotating to flat state of exhibition, with keep away from main shaft mechanism and remove in flat orientation, thereby further ensured that slewing mechanism and structure can move along flat orientation of exhibition steadily, and then guarantee that flexible screen is flat.

In an alternative implementation, each rotation mechanism further comprises at least one housing link;

the second end of swing arm is connected with the structure that corresponds and is included:

the second end of the swing arm is rotatably connected with a shell connecting rod, and the shell connecting rod is connected with a corresponding structural part.

The swing arm of this application embodiment passes through the casing connecting rod and is connected with the structure to improve the stability of being connected of swing arm and structure. In addition, the swing arm can drive the structural part to move through the shell connecting rod in the moving process, so that the structural part and the rotating mechanism can drive the flexible screen to be flattened in the flattening state.

In an alternative implementation, each rotating mechanism further comprises a support plate;

the backup pad is including backing up the first surface and the second surface that set up mutually, and swing arm and casing connecting rod set up at the first surface, and the casing connecting rod is connected with the backup pad, and flexible screen setting is on the second surface.

The embodiment of the application sets up the first surface in the backup pad through swing arm and casing connecting rod, sets up flexible screen at the second surface of backup pad, and like this, when main shaft mechanism removed is kept away from to swing arm and casing connecting rod under elastic component's drive, the backup pad can also keep away from main shaft mechanism and remove under the drive of casing connecting rod to drive the flexible screen on the backup pad second surface steadily and continue to move in the flat orientation of exhibition, make the flat exhibition of flexible screen. In addition, the arrangement of the supporting plate improves the attaching degree of the flexible screen on the surface of the rotating mechanism, and further improves the flatness of the flexible screen in a use state.

The embodiment of the application also provides a hinge assembly, which comprises a main shaft mechanism and two rotating mechanisms, wherein the two rotating mechanisms are positioned on two sides of the main shaft mechanism and are rotationally connected with the main shaft mechanism;

each rotating mechanism comprises at least one swing arm, the first end of each swing arm is rotatably connected with the main shaft mechanism, and the second end of each swing arm is connected with a structural member of the folding screen device;

the flexible screen is provided with an elastic assembly on the main shaft mechanism, the first end of the elastic assembly is connected with the main shaft mechanism, the second end of the elastic assembly is abutted to the first end of the swing arm when the rotating mechanism rotates to the flattening state, and the elastic assembly is in a compression state when the rotating mechanism rotates to the flattening state, and the compression amount of the elastic assembly when the rotating mechanism rotates to the flattening state is larger than that of the rotating mechanism when the rotating mechanism rotates to the folding state.

In addition, this application embodiment is through setting up elastic component on main shaft mechanism, on the one hand, the spatial structure of main shaft mechanism has rationally been utilized, the space on the slewing mechanism has been practiced thrift, the device such as the flexible circuit version, radiator that set up on the slewing mechanism provides suitable setting space, on the other hand, main shaft mechanism compares in slewing mechanism, higher structural strength has, can ensure the assembly reliability and the activity reliability of the elastic component who sets up on main shaft mechanism like this, also make elastic component can not cause the influence to main shaft mechanism's structural stability in the wearing and tearing of many times compression process to main shaft mechanism. In addition, the movable amplitude of the main shaft mechanism in the processes of flattening and folding the hinge assembly is small, so that the assembly stability of the elastic assembly can be ensured, the stable pushing of the elastic assembly to the swing arm is further ensured, and the flatness of the flexible screen in the flattening state of the folding screen device is ensured. In addition, the elastic component is arranged on the main shaft mechanism, so that the elastic component is convenient to detach, maintain and replace.

Drawings

FIG. 1 is a schematic structural view of a folding screen apparatus according to an embodiment of the present application in a flat state;

FIG. 2 is a schematic structural view of a folding screen apparatus provided in an embodiment of the present application in a semi-folded state;

FIG. 3 is a schematic structural diagram of a folding screen apparatus provided in an embodiment of the present application in a folded state;

fig. 4 is a schematic diagram of an exploded structure of a folding screen apparatus according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram illustrating a hinge assembly in a flat state in a foldable screen device according to an embodiment of the present application;

FIG. 6 is a side view of a hinge assembly switchable between a flat state and a folded state in a folding screen apparatus provided in accordance with an embodiment of the present application;

FIG. 7 is a schematic view of a portion of a hinge assembly of a foldable screen apparatus according to an embodiment of the present application in a flattened configuration;

FIG. 8 is a schematic view of a portion of a hinge assembly in a foldable screen apparatus according to an embodiment of the present application in a semi-folded configuration;

FIG. 9 is a schematic view of a portion of a hinge assembly of a foldable screen apparatus according to an embodiment of the present application in a folded configuration;

FIG. 10 is an exploded view of FIG. 7;

FIG. 11 is a cross-sectional view of a portion of the structure of FIG. 7;

FIG. 12 is a schematic structural view of the spindle mechanism of FIG. 7;

FIG. 13 is a schematic structural view of the swing arm of FIG. 7;

FIG. 14 is a schematic view of the push block of FIG. 7;

FIG. 15 is a cross-sectional view of a portion of the structure of FIG. 8;

FIG. 16 is a cross-sectional view of a portion of the structure of FIG. 9;

FIG. 17 is a schematic view of an alternative hinge assembly in a folded screen device according to an embodiment of the present application in a flattened configuration;

fig. 18 is a schematic view of the structure of the cover plate of fig. 17.

Description of reference numerals:

10-a flexible screen; 20-a structural member; 30-a hinge assembly; 40-battery cover; 10 a-outer screen;

11-a first display area; 12-a second display area; 13-a third display area; 21-a first structural member; 22-a second structural member; 31-a spindle mechanism; 32-a rotation mechanism; 32 a-a connector; 33-a resilient component; 34-a cover plate;

211-a first metal middle plate; 212-a first rim; 221-a second metal middle plate; 222-a second bezel; 311-mounting grooves; 312-assembly holes; 321-a swing arm; 322-housing link; 323-a support plate; 331-an elastic member; 332-a push block; 333-spacer; 341-body portion; 342-a clamping part;

311 a-opening; 311 b-a resisting part; 3111-a sunken location; 3121-arcuate ribs; 3211-a limiting groove; 3212-arc groove; 321 a-avoidance port; 3231-a first surface; 3232-a second surface; 3321-a body portion; 3322-a connecting part; 332 a-projection; 332 b-an extension;

3211 a-step surface.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

The embodiment of the application provides a folding screen device. It is understood that the foldable screen device provided in the embodiments of the present application may include, but is not limited to, a foldable fixed terminal or a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a handheld computer, a touch television, an intercom, a netbook, a POS machine, a Personal Digital Assistant (PDA), a wearable device, a virtual reality device, and the like.

Fig. 1 is a schematic structural diagram of a folded screen device provided in an embodiment of the present application in a flat state, fig. 2 is a schematic structural diagram of a folded screen device provided in an embodiment of the present application in a semi-folded state, and fig. 3 is a schematic structural diagram of a folded screen device provided in an embodiment of the present application in a folded state. Referring to fig. 1 to 3, in the embodiment of the present application, a structure of a folding screen device is described by taking a folding screen mobile phone as an example. The folding screen mobile phone may be a folding mobile phone with a folded screen, and in some examples, the folding screen mobile phone may also be a folding mobile phone with a folded screen.

Referring to fig. 1, the folding screen mobile phone may at least include: two structural members 20 and a hinge assembly 30 positioned between the two structural members 20. The two structural members 20 may be a first structural member 21 and a second structural member 22, the first structural member 21 and the second structural member 22 are respectively located at two sides of the hinge assembly 30, and the first structural member 21 and the second structural member 22 are respectively fixedly connected to the hinge assembly 30. Wherein the first structural member 21 and the second structural member 22 are fixedly connected to a connector 32a (see fig. 5) of the hinge assembly 30, respectively.

It should be noted that the first structural member 21 and the second structural member 22 can be fixedly connected to the connecting member 32a by welding, bonding, or screw locking, respectively.

Referring to fig. 1, the first structural member 21 and the second structural member 22 can be relatively unfolded to an open state (also called a flat state), so that the folding screen mobile phone is in the open state (also called the flat state). Illustratively, the first structural member 21 and the second structural member 22 may be substantially 180 ° (with some slight deviation, such as 165 °, 177 °, or 185 °, also being allowed) when in the flattened state.

As shown in fig. 3, the first structural member 21 and the second structural member 22 can be folded relatively to a closed state (also called a folded state) so as to make the folding screen mobile phone in the folded state. Illustratively, the first and second structural members 21, 22 are fully foldable to be parallel to each other (allowing for some deviation).

The intermediate state (also referred to as a half-folded state) shown in fig. 2 may be any state between the unfolded state and the folded state. Therefore, the folding screen mobile phone can be switched between the flat state and the folding state through the movement of the hinge assembly 30.

It should be noted that, the number of the first structural component 21 and the second structural component 22 may be one, so that the folding screen mobile phone may be folded into two layers, for example, as shown in fig. 1, the folding screen mobile phone may include a first structural component 21, a second structural component 22, and a hinge assembly 30 for connecting the first structural component 21 and the second structural component 22, and the first structural component 21 and the second structural component 22 are rotated to be stacked, so that the folding screen device is in a two-layer form.

Alternatively, the number of the first structural members 21 and the second structural members 22 may be plural, and the adjacent first structural members 21 and the second structural members 22 are connected by the hinge assembly 30, so that the folding screen apparatus can be folded into a plurality of layers. For example, the foldable screen device may include two second structures 22, a first structure 21 and two hinge assemblies 30, where the two second structures 22 are located at two sides of the first structure 21 and are respectively rotatably connected to the first structure 21 through the hinge assemblies 30, one of the second structures 22 may be mutually rotated to be stacked with the first structure 21, and the other second structure 22 may also be rotated to be stacked with respect to the first structure 21, so that the foldable screen device may have a three-layer folded configuration, and when two of the first structure 21 and the second structure 22 are rotated to the same plane, the foldable screen device may have a flat configuration.

Referring to fig. 1, in practical applications, the folding screen device may further include: a foldable flexible screen 10, wherein the flexible screen 10 is disposed on the same side surface of the hinge assembly 30, the first structure 21, and the second structure 22. When the first structural member 21 and the second structural member 22 are folded, the flexible screen 10 is bent and attached between the first structural member 21 and the second structural member 22; when the first structural member 21 and the second structural member 22 are unfolded, the flexible screen 10 is unfolded. Wherein, for a foldable cellular phone in which the screen is folded inward, the flexible screen 10 is disposed at the inner side surfaces of the hinge assembly 30, the first structural member 21, and the second structural member 22. For a foldable phone in which the screen is folded outward, the flexible screen 10 is disposed on the outer side surfaces of the hinge assembly 30, the first structure 21, and the second structure 22.

It should be noted that the inner side surfaces of the hinge assembly 30, the first structural member 21 and the second structural member 22 refer to surfaces of the hinge assembly 30, the first structural member 21 and the second structural member 22 facing the folding direction, in other words, when the folding screen phone is in the folded state or the half-folded state, the opposite surfaces of the first structural member 21 and the second structural member 22 are inner side surfaces, and at this time, the surface of the hinge assembly 30 on the same side as the inner side surfaces of the first structural member 21 and the second structural member 22 is the inner side surface of the hinge assembly 30.

Conversely, the outer side surfaces of the hinge assembly 30, the first structural member 21 and the second structural member 22 refer to the surfaces of the hinge assembly 30, the first structural member 21 and the second structural member 22 facing the unfolding direction, in other words, when the folding screen mobile phone is in the folded state or the half-folded state, the surface of the hinge assembly 30 opposite to the first structural member 21 and the second structural member 22 is the outer side surface, and at this time, the surface of the hinge assembly 30 on the same side as the outer side surfaces of the first structural member 21 and the second structural member 22 is the outer side surface of the hinge assembly 30.

In practice, the flexible screen 10 may be bonded to the inner surfaces of the hinge assembly 30, the first structure 21, and the second structure 22 to ensure that a portion of the flexible screen 10 is stably covered on the inner surfaces of the hinge assembly 30, thereby improving the stability of the flexible screen 10 within the folding screen device.

Referring to fig. 1, the flexible screen 10 may include: a first display region 11, a second display region 12, and a third display region 13 positioned between the first display region 11 and the second display region 12, wherein the first display region 11 may be positioned on an inner surface of the first structural member 21, the second display region 12 may be positioned on an inner surface of the second structural member 22, and the third display region 13 is positioned on an inner surface of the hinge assembly 30.

Of course, in some embodiments, the folding screen apparatus may also be a notebook computer, and the notebook computer may also include a first structural member 21 and a second structural member 22, where the first structural member 21 and the second structural member 22 can rotate towards each other to be stacked, so that the notebook computer is in a folded state, and conversely, when the first structural member 21 and the second structural member 22 rotate away from each other from the stacked state to be unable to rotate, the notebook computer is in a flat state. Wherein, in the flat state, the partially foldable flexible screen 10 on the first structural member 21 can be used for displaying images and the like, and the partially foldable flexible screen 10 on the second structural member 22 can be used as a virtual keyboard.

Referring to fig. 2 and 3, the electronic device may further include an outer screen 10a, and the outer screen 10a and the flexible screen 10 may be respectively disposed at both sides of the first structural member 21 or the second structural member 22, for example, referring to fig. 2, the outer screen 10a is opposite to the second display region 12 of the flexible screen 10, and the outer screen 10a and the second display region 12 of the flexible screen 10 are respectively disposed at both sides of the second structural member 22, so that, referring to fig. 3, when the folding screen device is in a folded state, the outer screen 10a is disposed at an outer surface of the folding screen device and may be used alone. Of course, in some examples, the outer screen 10a may not be provided.

In the embodiment of the present application, referring to fig. 2, a battery cover 40 may be further included, and the battery cover 40 and the first display area 11 of the flexible screen 10 may be respectively located at two sides of the first structural member 21.

Fig. 4 is an exploded view of a folding screen device according to an embodiment of the present application. Referring to fig. 4, the first structural member 21 and the second structural member 22 may be middle frames, wherein the first structural member 21 may include a first metal middle plate 211 and a first frame 212 surrounding an outer edge of the first metal middle plate 211, and the second structural member 22 may include a second metal middle plate 221 and a second frame 222 surrounding an outer edge of the second metal middle plate 221. The hinge assembly 30 is fixedly coupled to the first metal middle plate 211 and the second metal middle plate 221, respectively.

Fig. 5 is a schematic view of a hinge assembly of a foldable screen device according to an embodiment of the present application in a flat position. Referring to fig. 5, the hinge assembly 30 includes a spindle mechanism 31, and two rotating mechanisms 32 located at both sides of the spindle mechanism 31 and rotatably connected to the spindle mechanism 31. As shown in fig. 5, the two rotating mechanisms 32 may be symmetrically disposed with respect to the main shaft mechanism 31. The two rotating mechanisms 32 can rotate relative to the spindle mechanism 31 along the two dashed arrows in fig. 5.

Fig. 6 is a side view of a hinge assembly in a foldable screen device according to an embodiment of the present application, switched between a flat state and a folded state. For example, referring to fig. 6, when the two rotating mechanisms 32 are in the folded state, the two rotating mechanisms 32 may face each other, and when the two rotating mechanisms 32 are in the unfolded state, the two rotating mechanisms 32 are back-to-back with respect to the spindle mechanism 31, in other words, both the two rotating mechanisms 32 and the spindle mechanism 31 are in the unfolded direction (see the direction indicated by the arrow a in fig. 6).

Note that the flattening direction refers to a width direction of the hinge assembly 30 when the rotating mechanism 32 is rotated to the flattened state.

Referring to fig. 4 and 5, in the specific assembly, one end of the rotating mechanism 32 opposite to the main shaft mechanism 31 is connected to the corresponding structural member 20, for example, one of the rotating mechanisms 32 is connected to the first structural member 21 through a structural member 33a, and the other rotating mechanism 32 is connected to the second structural member 22 through a connecting member 32a, so that the two rotating mechanisms 32 can respectively drive the first structural member 21 and the second structural member 22 to fold or unfold, so that the flexible screen 10 on the surfaces of the two structural members 20 and the hinge assembly 30a can be arbitrarily switched between the flat state and the folded state.

As shown in fig. 6, because there is a displacement difference between the rotating mechanism 32 and the spindle mechanism 31 (i.e. the bending region of the hinge assembly 30) in the two states of folding and unfolding, after the flexible screen 10 is bent for a long time, the flexible screen 10 at the connection between the rotating mechanism 32 and the spindle mechanism 31 is very likely to have wrinkles such as arching when the hinge assembly 30 is in the unfolded state, thereby affecting the flatness of the flexible screen 10 of the folding screen device in the unfolded state.

To this end, in the hinge assembly 30 provided in the embodiment of the present application, the elastic assembly 33 is disposed on the main shaft mechanism 31, and when the hinge assembly 30 is in the flat state, the elastic assembly 33 is abutted by the first end of the swing arm 321, so that the elastic assembly 33 is in the compressed state, and the amount of compression of the elastic assembly 33 when the rotating mechanism 32 rotates to the flat state is greater than that when the hinge assembly is not in the flat state, so that when the user releases or reduces the acting force of the structural member 20 on one side of the swing arm 321 in the flat direction, the second end of the elastic assembly 33 drives the swing arm 321 of the rotating mechanism 32 to move away from the main shaft mechanism 31 under the action of the elastic force, so that the structural member 20 on one end of the swing arm 321 moves away from the main shaft mechanism 31, and thus the flexible screen 10 is flattened under the driving of the swing arm 321 and the structural member 20, so that the flexible screen 10 is in the flat state. The specific structure of the hinge assembly 30 of the embodiment of the present application will be described below.

Fig. 7 is a partial structural view of a folded screen device according to an embodiment of the present invention, in which one of hinge assemblies is in a flat state, fig. 8 is a partial structural view of a folded screen device according to an embodiment of the present invention, in which the hinge assembly is in a half-folded state, fig. 9 is a partial structural view of a folded screen device according to an embodiment of the present invention, fig. 10 is an exploded view of fig. 7, and fig. 11 is a sectional view of a partial structure of fig. 7.

Referring to fig. 7, in the hinge assembly 30 provided in the embodiment of the present application, each rotating mechanism 32 includes at least one swing arm 321, a first end of each swing arm 321 is rotatably connected to the main shaft mechanism 31, and a second end of each swing arm 321 is connected to the corresponding structural member 20. For example, a first end of the swing arm 321 of one of the rotating mechanisms 32 is rotatably connected to the spindle mechanism 31, and a second end of the swing arm 321 is connected to the first structural member 21 (see fig. 4); a first end of the swing arm 321 of the other rotating mechanism 32 is rotatably connected to the spindle mechanism 31, and a second end of the swing arm 321 is connected to the second structural member 22 (see fig. 4). It will be appreciated that part of the flexible screen 10, for example the third display region 13, is located on the inner surface of the swing arm 321 and spindle mechanism 31.

The inner surface of the swing arm 321 refers to a surface of the swing arm 321 facing the folding direction.

In addition, referring to fig. 10, a first end (shown as e in fig. 10) of the swing arm 321 refers to an end of the swing arm 321 facing the spindle mechanism 31, and a second end (shown as f in fig. 10) of the swing arm 321 refers to an end of the swing arm 321 facing away from the spindle mechanism 31.

Referring to fig. 7, taking an example that each rotating mechanism 32 includes one oscillating arm 321, one oscillating arm 321 is located at one side of the axis l of the spindle mechanism 31, and a first end of each oscillating arm 321 is rotatably connected to the spindle mechanism 31, so that the oscillating arm 321 can rotate around the spindle mechanism 31. When the swing arms 321 rotate around the main shaft mechanism 31 in the direction indicated by the arrow b in fig. 7, the two swing arms 321 on both sides of the main shaft mechanism 31 are folded with respect to the main shaft mechanism 31, as shown in fig. 9, until the hinge assembly 30 is in the folded state.

When the swing arm 321 rotates around the main shaft mechanism 31 in the direction indicated by the arrow c in fig. 9, until the swing arm 321 is in the flattening direction with respect to the main shaft mechanism 31, as shown in fig. 7, the hinge assembly 30 is in a flattened state, in which the state of the hinge assembly 30 shown in fig. 8 is between the flattened state and the folded state, i.e., a half-folded state.

A second end of the swing arm 321 of the rotating mechanism 32 is connected to the corresponding structural component 20, so that each swing arm 321 can drive the corresponding structural component 20 to rotate in the rotating process, for example, the swing arm 321 on one side of the spindle mechanism 31 drives the first structural component 21 to rotate, and the swing arm 321 on the other side of the spindle mechanism 31 drives the second structural component 22 to rotate, so that when the swing arms 321 on the two sides rotate around the spindle mechanism 31 in opposite directions, the first structural component 21 and the second structural component 22 also rotate in opposite directions, until inner surfaces of the swing arms 321 on the two sides face each other, the hinge assembly 30 drives the first structural component 21 and the second structural component 22 to be in a folded state, and thus the hinge assembly 30 and the flexible screens 10 on the two structural components 20 are also bent to be in the folded state; when the swing arms 321 on the two sides rotate around the main shaft mechanism 31 in opposite directions, the first structural member 21 and the second structural member 22 also rotate in opposite directions, until the swing arms 321 on the two sides are in the flattening direction, the hinge assembly 30 drives the first structural member 21 and the second structural member 22 to be also in the flattening state, so that the hinge assembly 30 and the flexible screen 10 on the two structural members 20 are also unfolded to the flattening state.

It should be noted that the second end of the swing arm 321 of the rotating mechanism 32 may be directly connected to the corresponding structural member 20, or may be indirectly connected thereto, for example, the second end of the swing arm 321 may be connected to the structural member 20 through the housing link 322. The embodiment of the present application does not specifically limit the connection mode between the swing arm 321 and the corresponding structural member 20, as long as it is ensured that the swing arm 321 can drive the connected structural member 20 to rotate in the rotation process.

Referring to fig. 10, the hinge assembly 30 further includes an elastic assembly 33, the elastic assembly 33 is disposed on the main shaft mechanism 31 (see fig. 7), referring to fig. 11, a first end of the elastic assembly 33 is connected to the main shaft mechanism 31, a second end of the elastic assembly 33 is configured to abut against a first end of the swing arm 321 when the rotating mechanism 32 rotates to the flat state, and the elastic assembly 33 is in the compressed state when the rotating mechanism 32 rotates to the flat state.

It should be noted that the first end and the second end of the elastic component 33 refer to two ends of the elastic component 33, which are opposite to each other in the extending and contracting direction.

In the embodiment of the present application, the second end of the elastic component 33 abuts against the first end of the swing arm 321 when the rotating mechanism 32 rotates to the flat state. In some examples, when the rotating mechanism 32 is in the half-folded state (see fig. 8) or the folded state (see fig. 9), there may not be any interference between the second end of the elastic assembly 33 and the end of the swing arm 321, i.e., the elastic assembly 33 is in a natural state when the rotating mechanism 32 is in the folded state or the half-folded state, and does not generate any force with the swing arm 321.

In practical design, for tolerance reasons, in some examples, when the rotating mechanism 32 is in a semi-folded state (see fig. 8) or a folded state (see fig. 9), interference may occur between the second end of the elastic assembly 33 and the sidewall of the first end of the swing arm 321, that is, the swing arm 321 may have pressure on the elastic assembly 33, so that the elastic assembly 33 is in a compressed state.

It should be noted that in the embodiment of the present application, the compression amount of the elastic component 33 when the rotating mechanism 32 rotates to the flat state needs to be greater than the compression amount of the elastic component 33 when the rotating mechanism 32 rotates to the folded state, so as to ensure that when the rotating mechanism 32 rotates to the flat state, the elastic force generated after the elastic component 33 is compressed can push the swing arm 321, so that the flexible screen 10 is flat.

It can be understood that when the rotating mechanism 32 rotates to the flat state, the second end of the elastic component 33 abuts against the first end of the swing arm 321, so that the swing arm 321 has a pressure on the second end of the elastic component 33 in a direction toward the first end of the elastic component 33, so that the elastic component 33 is in the compressed state, and thus, the elastic component 33 can generate an elastic force, and when the user releases or relieves an acting force on the structural component 20 on one side of the swing arm 321 in the flat state, the second end of the elastic component 33 can drive the swing arm 321 to move away from the main shaft mechanism 31, so as to flatten the flexible screen 10.

Wherein the first end of the elastic component 33 is connected to the main shaft mechanism 31 to ensure that the elastic component 33 is stably assembled on the main shaft mechanism 31, so that the main shaft mechanism 31 can stop the first end of the elastic component 33. Illustratively, the first end of the elastic component 33 may be directly and fixedly connected to the spindle mechanism 31, for example, the first end of the elastic component 33 may be connected to the spindle mechanism 31 by bonding, welding, or clipping.

In some examples, the first end of the elastic element 33 may also abut against the spindle mechanism 31, for example, the elastic element 33 may be movably clamped in the mounting slot 311 of the spindle mechanism 31, wherein the first end of the elastic element 33 abuts against the inner wall of the spindle mechanism 31 (refer to fig. 7, and refer to the related contents below).

It will be appreciated that the elastic member 33 is movably disposed on the spindle mechanism 31, for example, the second end of the elastic member 33 is in a free state, i.e. not connected with the spindle mechanism 31, so as to ensure that the elastic member 33 can extend and contract. Wherein, the stretching direction of the elastic assembly 33 can be consistent with the flattening direction (see the direction indicated by the arrow a in fig. 7), which can ensure that the elastic assembly 33 drives the swing arm 321 to move along the direction of the arrow a under the action of the elastic force, so that the flexible screen 10 at the inner surface of the swing arm 321 also moves along the direction of the arrow a and finally flattens.

In practical applications, the main shaft mechanism 31 includes a main inner shaft and a main outer shaft, the main outer shaft is disposed on the outer surface of the main inner shaft, and the elastic component 33 may be disposed on the side of the main inner shaft of the main shaft mechanism 31 facing the main outer shaft. Wherein, the outer surface of the main inner shaft refers to a side surface of the main inner shaft facing away from the flexible screen 10.

Referring to fig. 7 and 11, taking the elastic assembly 33 as a compression spring as an example, a first end of the compression spring is connected to the spindle mechanism 31, so that the first end of the compression spring is fixed on the spindle mechanism 31. In addition, when the rotating mechanism 32, for example, the swing arm 321, rotates to the flattened state, the second end of the compression spring abuts against the first end of the swing arm 321, that is, the second end of the compression spring interferes with the first end of the swing arm 321, so that the swing arm 321 applies a pressure to the compression spring toward the spindle mechanism 31, the compression spring is compressed when receiving the pressure of the swing arm 321, and generates an elastic force, the elastic force acts on the swing arm 321, and the direction of the elastic force is consistent with the flattening direction. When the force applied to the second end of the swing arm 321 in the flattening direction is smaller than the elastic force, the compression spring drives the swing arm 321 to move away from the spindle mechanism 31 in the flattening direction.

When the user unfolds the folding screen device from the folded state to the unfolded state, for example, when the user rotates the swing arm 321 to the unfolded state by snapping the structural member 20, the user releases or relieves the force applied to the structural member 20 in the unfolding direction, at this time, the elastic assembly 33 in the compressed state drives the swing arm 321 to move away from the main shaft mechanism 31 in the direction of arrow a in fig. 7, so that the rotating mechanism 32 moves away from the main shaft mechanism 31 in the direction of arrow a in fig. 7.

According to the arching degree of the flexible screen 10 when the rotating mechanism 32 rotates to the flat state, the interference degree between the second end of the elastic component 33 and the swing arm 321 in the flat state can be adjusted, so as to adjust the compression amount of the elastic component 33. For example, when the arching degree of the flexible screen 10 is large when the rotating mechanism 32 rotates to the flat state, and the user rotates the swing arm 321 to the flat state by breaking the structure 20, the swing arm 321 may be further pressed toward the main shaft mechanism 31 to increase the compression amount of the elastic assembly 33, so as to improve the elastic force of the elastic assembly 33, increase the driving force of the elastic assembly 33 on the swing arm 321, increase the moving displacement of the swing arm 321 along the arrow a direction in fig. 7, and ensure that the flexible screen 10 is flat.

Of course, in some examples, in order to adjust the degree of interference between the second end of the elastic assembly 33 and the swing arm 321 in the flattened state, different lengths of the elastic assembly 33 or different elastic forces of the elastic assembly 33 may be selected. For example, when the flexible screen 10 has a large arching degree when the rotating mechanism 32 rotates to the flat state, the elastic component 33 with a long length can be selected, so that when the rotating mechanism 32 rotates to the flat state, the swing arm 321 has a large compression amount towards the first end of the second end of the elastic component 33, so as to increase the elastic force of the elastic component 33, or the elastic component 33 with good elasticity is selected, so that when the swing arm 321 abuts against the elastic component 33, the elastic component 33 can be ensured to have a large elastic force in a certain compression state.

It is understood that the swing arm 321 shown in fig. 7 is located on the left side of the spindle mechanism 31, and therefore, the swing arm 321 can move away from the spindle mechanism 31 in the direction of the arrow a in fig. 7, while the swing arm 321 on the right side of the spindle mechanism 32 is not shown in fig. 7, and the swing arm 321 on the right side of the spindle mechanism 31 can move away from the spindle mechanism 31 in the direction opposite to the arrow a in fig. 7.

Referring to fig. 7, since the second end of the swing arm 321 of the rotating mechanism 32 is connected to the corresponding structural component 20, the structural component 20 (for example, the first structural component 21 and the second structural component 22) can be driven by the swing arm 321 to move away from the spindle mechanism 31, so that the flexible screen 10 is flattened in a direction away from the spindle mechanism 31 under the driving of the structural component 20, thereby preventing the flexible screen 10 from arching at the connection position of the rotating mechanism 32 and the spindle mechanism 31 when the hinge assembly 30 is in the flattened state, and ensuring the flatness of the flexible screen 10 of the folding screen device in the flattened state.

Referring to fig. 7, when the hinge assembly 30 is in the flat state, the swing arm 321 on one side of the main shaft mechanism 31 is driven by the elastic assembly 33 to move to the left (in the direction of arrow a in fig. 7) to drive the first structural member 21 to move to the left, so that the first display region 11 on the surface of the first structural member 21 moves to the left, and the third display region 13 on the hinge assembly 30 is pulled, so that the flexible screen 10 in the left bending region of the main shaft mechanism 31 is flattened.

The swing arm 321 on the other side of the spindle mechanism 31 moves to the right (in the direction opposite to the arrow a in fig. 7) under the driving of the elastic assembly 33, so as to drive the second structural member 22 to move to the right, so that the second display region 12 on the surface of the second structural member 22 moves to the right, thereby pulling the third display region 13 on the hinge assembly 30, so that the flexible screen 10 in the right bending region of the hinge assembly 30 is flattened.

In addition, because a part of the flexible screen 10, for example, the third display region 13, is disposed on a side surface of the hinge assembly 30, when the elastic assembly 33 drives the swing arm 321 to move away from the main shaft mechanism 31, the swing arm 321 can directly drive the third display region 13 thereon to move away from the main shaft mechanism 31, so that the flexible screen 10 is flattened, the display performance of the folding screen device is improved, and the service life of the flexible screen 10 is also prolonged.

For example, when the two swing arms 321 on both sides of the spindle mechanism 31 rotate to the flat state, the swing arm 321 on the left side of the spindle mechanism 31 moves to the left (see the direction of arrow a in fig. 7) under the driving of the elastic component 33, that is, the left rotation mechanism 32 moves to the left, and the flexible screen 10 on the inner surface of the rotation mechanism 32 moves to the left under the pulling of the rotation mechanism 32, so that the flexible screen 10 between the left rotation mechanism 32 and the spindle mechanism 31 is flat.

Accordingly, the swing arm 321 located at the right side of the spindle mechanism 31 moves to the right (in the opposite direction of arrow a in fig. 7) under the driving of the elastic assembly 33, that is, the rotating mechanism 32 at the right side moves to the right, and the flexible screen 10 located at the inner surface of the rotating mechanism 32 moves to the right under the pulling of the rotating mechanism 32, so that the flexible screen 10 between the rotating mechanism 32 at the right side and the spindle mechanism 31 is flattened.

Referring to fig. 7 to 9, in the embodiment of the present application, by disposing the elastic component 33 on the spindle mechanism 31, on one hand, a spatial structure of the spindle mechanism 31 is reasonably utilized, so as to save a space on the rotating mechanism 32, such as a support plate 323 or a housing connecting rod 322 mentioned below, and provide a suitable disposing space for a flexible circuit board, a heat sink, and other devices disposed on the rotating mechanism 32, and on the other hand, compared with a component in the rotating mechanism 32, such as the support plate 323 or the housing connecting rod 322, the spindle mechanism 31 has a higher structural strength, so that the assembling reliability and the moving reliability of the elastic component 33 disposed on the spindle mechanism 31 can be ensured, and the elastic component 33 can abut against the spindle mechanism 31 in multiple compression processes, so as not to affect the structural stability of the spindle mechanism 31.

In addition, the movement range of the main shaft mechanism 31 in the process of flattening and folding the hinge assembly 30 is small, so that the assembly stability of the elastic assembly 33 can be ensured, the stable pushing of the elastic assembly 33 to the swing arm 321 is further ensured, and the flatness of the flexible screen 10 in the flattened state of the folding screen device is ensured. In addition, by providing the elastic member 33 on the spindle mechanism 31, the elastic member 33 can be easily removed, repaired, and replaced.

It will be appreciated that the first end of the resilient member 33 may abut at any location on the spindle mechanism 31. For example, a mounting portion (not shown) may be provided on a side of the spindle mechanism 31 facing the swing arm 321, a mounting passage may be opened in the mounting portion, the elastic member 33 may be received in the mounting passage of the mounting portion, and a first end of the elastic member 33 may abut on an inner wall of the mounting portion.

Fig. 12 is a schematic structural view of the spindle mechanism in fig. 7. Referring to fig. 12, in some examples, the spindle mechanism 31 may have a mounting groove 311 thereon, and a side of the mounting groove 311 facing the swing arm 321 has an opening 311a, in other words, the mounting groove 311 penetrates through a surface of the spindle mechanism 31 facing the swing arm 321, such that a first end of the swing arm 321 may enter the mounting groove 311 to interfere with a second end of the elastic member 33, or a second end of the elastic member 33 may protrude outside the mounting groove 311 and interfere with a first end of the swing arm 321.

It is understood that the mounting groove 311 may be a groove recessed from the outer surface of the main shaft mechanism 31, and the notch of the mounting groove 311 is located on the outer surface of the main shaft mechanism 31, i.e. disposed opposite to the flexible screen 10, and the inner bottom wall of the mounting groove 311 refers to the inner wall of the mounting groove 311 facing the notch.

Referring to fig. 7 and 12, at least a portion of the elastic member 33 is received in the mounting groove 311, a first end of the elastic member 33 abuts on an inner wall of the mounting groove 311, and a second end of the elastic member 33 is engaged with a first end of the swing arm 321 through the opening 311a. Wherein, the elastic component 33 can move freely in the mounting slot 311 to ensure the elastic component 33 to perform normal compression and extension.

Continuing with the example of the compression spring, a first end of the compression spring may abut against an inner wall of the mounting groove 311 facing the opening 311a, and a second end of the compression spring may protrude from the opening 311a to an outside of the mounting groove 311. When the swing arm 321 rotates to the flat state, the first end of the swing arm 321 abuts against the second end of the compression spring to extrude the compression spring, and when the second end of the swing arm 321 is stressed along the flat direction and is smaller than the elastic force of the compression spring at the moment, the compression spring stretches in the flat direction and drives the swing arm 321 to move away from the spindle mechanism 31 along the flat direction.

In the embodiment of the present application, the mounting groove 311 is disposed on the spindle mechanism 31, and at least a portion of the elastic component 33 is received in the mounting groove 311, so that the compression and the extension of the elastic component 33 are completed in the mounting groove 311. The arrangement of the mounting groove 311 limits the movable range of the elastic component 33 in the axial direction of the spindle mechanism 31, and simultaneously increases the assembly area between the elastic component 33 and the spindle mechanism 31, thereby improving the structural stability of the elastic component 33 on the spindle mechanism 31, and further ensuring that the elastic component 33 drives the swing arm 321 more reliably.

Referring to fig. 12, during installation, a recess 3111 may be disposed on the bottom wall of the mounting groove 311, an extending direction of the recess 3111 is consistent with a stretching direction of the elastic component 33, and a bottom of at least a portion of the elastic component 33 is embedded in the recess 3111 to further limit a moving direction of the elastic component 33, so as to ensure that the elastic component 33 can move in an elastic direction thereof after being squeezed by the swing arm 321, and the swing arm 321 is prevented from deflecting perpendicular to the elastic direction, thereby ensuring that the swing arm 321 moves in the flattening direction under the driving of the elastic component 33.

One end of the recess 3111 extends to the inner wall of the mounting groove 311 facing the opening 311a, and the other end of the recess 3111 extends to the opening 311a, so as to increase the matching area between the elastic element 33 and the recess 3111, and further increase the stable movement of the elastic element 33 in the elastic direction.

Fig. 13 is a schematic structural view of the swing arm in fig. 7. Referring to fig. 11 to 13, in the embodiment of the present application, a first end of the swing arm 321 may extend into the spindle mechanism 31 and rotate in the spindle mechanism 31. For example, the spindle mechanism 31 may further have a fitting hole 312, and the first end of the swing arm 321 is rotatably disposed in the fitting hole 312, for example, two inner walls opposite to the fitting hole 312 may be provided with arc-shaped protruding strips 3121, and two side walls opposite to the first end of the swing arm 321 are provided with arc-shaped grooves 3212, and the arc-shaped grooves 3212 are matched with the arc-shaped protruding strips 3121. In the assembled state of the swing arm 321 and the spindle mechanism 31, the arc protrusion 3121 is engaged with the arc groove 3212, so that the swing arm 321 can rotate around the spindle mechanism 31 along the extending direction of the arc protrusion 3121.

In the embodiment of the present application, the first end of the swing arm 321 can be stably rotated around the main shaft mechanism 31 without being deflected in the axial direction of the main shaft mechanism 31 by providing the fitting hole 312 on the main shaft mechanism 31 and rotatably disposing the first end of the swing arm 321 in the fitting hole. In addition, the elastic component 33 located in the mounting groove 311 can ensure that the swing arm 321 moves along the axial direction perpendicular to the main shaft mechanism 31 without deflection in the axial direction of the main shaft mechanism 31 when the first end of the swing arm 321 is driven to move. The axial direction of the spindle mechanism 31 is an extending direction of an axis l (see fig. 7) of the spindle mechanism 31.

It can be understood that the side of the swing arm 321 facing the mounting hole 312 penetrates through the side of the spindle mechanism 31, so as to ensure that the first end of the swing arm 321 extends into the mounting hole 312 and can rotate around the spindle mechanism 31, and can move left and right in the axial direction perpendicular to the spindle mechanism 31.

Referring to fig. 12 and 13, the mounting slot 311 is located at a side of the mounting hole 312 facing away from the corresponding structural member 20, in other words, the mounting hole 312 is located between the mounting slot 311 and the corresponding structural member 20, and an opening 311a of the mounting slot 311 faces the mounting hole 312, such that the first end of the swing arm 321 passes through the mounting hole 312 and engages with the elastic member 33 in the mounting slot 311.

For example, a first end of the swing arm 321 on the left side of the spindle mechanism 31 is fitted into the fitting hole 312 of the spindle mechanism 31, and when the hinge assembly 30 is in a flattened state, the first end of the swing arm 321 is fitted with the elastic component 33 on the spindle mechanism 31, and a second end of the swing arm 321 is connected with the first structural member 21, then the mounting groove 311 for accommodating the elastic component 33 is located on a side of the fitting hole 312 facing away from the first structural member 21, in other words, the fitting hole 312 for fitting the first end of the swing arm 321 is located between the mounting groove 311 and the first structural member 21.

In order to improve the structural stability of the elastic member 33, the elastic member 33 of the embodiment of the present application may include an elastic member 331 and a push block 332 (see fig. 7 and 11). One end of the elastic member 331 abuts against the inner wall of the mounting slot 311, for example, one end of the elastic member 331 abuts against the inner wall of the mounting slot 311 facing the opening 311a, and one end of the push block 332 abuts against the other end of the elastic member 331, in other words, the push block 332 abuts against the inner wall of the mounting slot 311 through the elastic member 331. The other end of the push block 332 is engaged with the first end of the swing arm 321, for example, a portion of the push block 332 may extend out of the opening 311a of the mounting slot 311 and engage with the first end of the swing arm 321. Wherein, the elastic member 331 may be a compression spring.

When the rotating mechanism 32 rotates to the flat state, the first end of the swing arm 321 can press the pushing block 332 (see fig. 11) to make the elastic member 331 be in the compressed state, and then when the force applied to the other end of the swing arm 321 is smaller than the elastic force of the elastic member 331, the elastic member 331 can push the swing arm 321 to move away from the main shaft mechanism 31 through the pushing block 332, so as to flatten the flexible screen 10, in addition, the pushing block 332 contacts with the first end of the swing arm 321 to increase the contact area between the elastic component 33 and the first end of the swing arm 321, so as to increase the contact stability between the pushing block 332 and the elastic component 33, and further ensure that the swing arm 321 stably moves along the flat direction under the driving of the elastic component 33.

When provided, the other end of the elastic member 331 may also be connected to the pushing block 332 to improve the assembling stability between the elastic member 331 and the pushing block 332.

Fig. 14 is a schematic structural view of the push block in fig. 7. Referring to fig. 13, in some examples, the first end surface of the swing arm 321 may have a limiting groove 3211, and referring to fig. 14, the surface of the pushing block 332 has a protrusion 332a, and when the swing arm 321 rotates to the flattened state, the protrusion 332a is embedded in the limiting groove 3211.

It can be understood that one end of the limiting groove 3211 penetrates through the inner surface of the swing arm 321 to avoid the pushing block 332 during the process of the swing arm 321 rotating from the folded state to the unfolded state or from the unfolded state to the folded state. For convenience of description, an opening of the stopper groove 3211 at the inner surface of the swing arm 321 is hereinafter referred to as an escape port 321a.

Fig. 15 is a sectional view of a part of the structure of fig. 8, and fig. 16 is a sectional view of a part of the structure of fig. 9. Referring to fig. 15 and 16, before the swing arm 321 rotates to the flat state, along with the rotation of the first end of the swing arm 321, the push block 332 may enter into the limiting groove 3211 from the avoiding opening 321a until the swing arm 321 rotates to the flat state, the first end of the swing arm 321 abuts against the end surface of the push block 332 to apply a pressing force to the push block 332 toward the spindle mechanism 31, so that the elastic member 331 at one end of the push block 332 is compressed, and the elastic member 331 generates an elastic force and pushes the swing arm 321 to move away from the spindle mechanism 31 through the push block 332.

Referring to fig. 15 and 16, correspondingly, when the swing arm 321 rotates from the flat state to the folded state, the first end of the swing arm 321 moves upward (i.e. away from the flexible screen 10), and at the same time, the pushing block 332 moves from the inside of the limiting groove 3211 to the avoiding opening 321a, and finally disengages from the limiting groove 3211 during the continuous rotation of the swing arm 321, until the swing arm 321 rotates to the folded state, and the swing arm 321 completely disengages from the pushing block 332.

Referring to fig. 13, an end surface of the first end of the swing arm 321 has two first main surfaces m (i.e., surfaces on two sides of the position-limiting groove 3211, as shown in m in fig. 13), and the two first main surfaces m are respectively located on two sides of the position-limiting groove 3211. Referring to fig. 14, the end surface of the other end of the push block 332 has two second main surfaces n (i.e., end surfaces on both sides of the protrusion 332 a), which are located on both sides of the protrusion 332a, and when the folding screen apparatus is in the flat state, the first main surface m and the second main surface n are arranged in a face-to-face manner, and during folding, the first main surface m rotates away from the second main surface n along with the rotation of the swing arm 321.

When the first end of the swing arm 321 abuts against the end surface of the push block 332 in this way, for example, the first main surface m may abut against the second main surface n, and the groove wall of the stopper groove 3211 facing the push block 332 may abut against the surface of the protrusion 332a facing the swing arm 321.

In practical application, the first main surface m and the second main surface n can be set to be arc surfaces matched with each other, so that the first end of the swing arm 321 can be better avoided from the push block 332 in the rotating process, the stability of the push block 332 in the installation groove 311 is ensured, and the swing arm 321 is also ensured to stably rotate between the folding state and the flattening state.

In the embodiment of the present application, the protruding portion 332a is embedded in the limiting groove 3211, so that two opposite side walls of the limiting groove 3211 limit the protruding portion 332a, so as to ensure that the pushing block 332 can be stably abutted against the first end of the swing arm 321 when pushing the swing arm 321 to move, and cannot be shifted in the moving direction perpendicular to the swing arm 321, and further ensure that the swing arm 321 moves along the axial direction perpendicular to the main shaft mechanism 31 under the pushing of the pushing block 332.

When the hinge assembly is disposed, a groove wall of the limiting groove 3211 facing the pushing block 332 may have a step surface 3211a (see fig. 13), as shown in fig. 11, and the protrusion 332a is supported on the step surface 3211a (see fig. 13), so that when the first end of the swinging arm 321 abuts against the pushing block 332, the pushing block 332 can be ensured to stably abut against the first end of the swinging arm 321 when the swinging arm 321 is pushed to move, and cannot slide down along the first end surface of the swinging arm 321, thereby ensuring that the swinging arm 321 moves along the flattening direction of the hinge assembly 30 under the pushing of the pushing block 332.

The step surface 3211a also serves to position the swing arm 321, for example, when the swing arm 321 rotates from the folded state to the unfolded state, as long as the protrusion 332a of the elastic assembly 33 contacts the step surface 3211a at the first end of the swing arm 321, the rotation of the swing arm 321 is completed, so that the hinge assembly 30 is in the unfolded state.

Referring to fig. 13, when the push block is disposed, at least a portion of the step surface 3211a may be an arc surface, and at least one surface (see fig. 11) of the protruding portion 332a facing the step surface 3211a is an arc surface (see s in fig. 14) matched with the arc surface, so that the first end of the swing arm 321 can better avoid the protruding portion 332a during the rotation process, without affecting the stability of the push block 332 in the mounting groove 311.

In order to ensure the elastic component 33 can stably move in the mounting slot 311, referring to fig. 12, two abutting portions 311b may be disposed on two opposite inner walls of the mounting slot 311, and an opening 311a of the mounting slot 311 is formed between the two abutting portions 311 b. Referring to fig. 12 and 15, correspondingly, the pushing block 332 may have extending portions 332b on two opposite side walls, the abutting portions 311b abut the extending portions 332b in the mounting groove 311, and at least a portion of the pushing block 332 protrudes out of the opening 311a.

It is understood that the two opposite inner walls of the mounting groove 311 may be two groove walls of the mounting groove 311 oppositely arranged along the axial direction of the spindle mechanism 31.

In the embodiment of the application, the abutting portion 311b is arranged on the inner wall of the mounting groove 311, and the extending portion 332b is arranged on the side wall of the pushing block 332, so that on one hand, the extending portion 332b abuts against the mounting groove 311 through the abutting portion 311b, the pushing block 332 is prevented from being separated from the mounting groove 311, on the other hand, the assembling procedure between the pushing block 332 and the mounting groove 311 is simplified, and the assembling efficiency between the pushing block 332 and the mounting groove 311 is improved.

Referring to fig. 14, the push block 332 according to an embodiment of the present disclosure may include a main body portion 3321 and a connecting portion 3322, where one end of the main body portion 3321 is connected to the connecting portion 3322, and the other end of the main body portion 3321 is engaged with the first end of the swing arm 321 to push the swing arm 321 to move, in other words, the main body portion 3321 is disposed near the swing arm 321, the connecting portion 3322 is disposed far from the swing arm 321, and at least a portion of the elastic member 331 is sleeved on the connecting portion 3322 to improve the stability of the elastic member 331 on the push block 332, so that the elastic member 331 can be stably compressed or extended along the connecting portion 3322.

It can be understood that when the pushing block 332 is in a free state (i.e. without interfering with the swing arm 321), a certain distance is provided between the end of the connecting portion 3322 opposite to the main body portion 3321 and the inner wall of the mounting groove 311 facing the opening 311a, so as to ensure that the pushing block 332 can move in the direction opposite to the arrow a (see fig. 7) under the push of the swing arm 321.

The protrusion 332a of the pushing block 332 is disposed at the other end of the main body 3321, and the protrusion 332a is embedded in the limiting groove 3211 at the first end of the swing arm 321 when the swing arm 321 rotates to the flat state.

The two second main surfaces n of the push block 332 are located on two sides of the protrusion 332a, and when the folding screen device is in the flat state, the first main surface m of the swing arm 321 and the second main surface n on the main body 3321 are arranged in a face-to-face manner, and during the folding process of the folding screen device, the first main surface m rotates away from the second main surface n along with the rotation of the swing arm 321.

The extending direction of the connecting portion 3322 of the pushing block 332 is consistent with the extending and retracting direction of the elastic member 331, so that the elastic member 331 is freely movable along the extending direction of the connecting portion 3322.

In order to improve the stability of the elastic member 331 on the connecting portion 3322, referring to fig. 10, the elastic member 33 may further include a positioning piece 333, the positioning piece 333 is disposed at an end of the connecting portion 3322 opposite to the main body portion 3321, and at least a portion of the elastic member 331 is disposed between the main body portion 3321 and the positioning piece 333, so that when the pushing block 332 moves away from the spindle mechanism 31 under the action of the elastic force, the elastic member 331 can be stably disposed on the connecting portion 3322 of the pushing block 332 without being separated from the pushing block 332.

Referring to fig. 7, when the swing arm 321 is rotated to the flat state, the first end of the swing arm 321 presses the main body portion 3321 toward the connecting portion 3322, so that the elastic member 331 on the connecting portion 3322 is in a compressed state, the elastic member 331 generates an elastic force in the compressed state, the elastic force acts on the main body portion 3321, and the main body portion 3321 pushes the swing arm 321 to move away from the spindle mechanism 31, so that the flexible screen 10 on the side of the swing arm 321 is flat.

One or more connecting parts 3322 may be provided, and when there is one connecting part 3322, one connecting part 3322 may be provided at the center of the main body 3321 to ensure that the force of the elastic member 331 on the connecting part 3322 on the main body 3321 is located at the center of the main body 3321, thereby ensuring that the main body 3321 moves stably along the elastic direction and preventing the left and right sides of the main body 3321 from tilting back and forth in the elastic direction during movement. It is understood that the left and right sides of the main body portion 3321 refer to opposite sides of the main body portion 3321 in a direction perpendicular to the extension and contraction direction of the elastic member 331.

Referring to fig. 7, there may be two connection portions 3322, and at least two connection portions 3322 are provided at one end of the body portion 3321 with an interval therebetween.

The number of the elastic members 331 may be one or more, and each of the elastic members 331 is respectively sleeved on the corresponding connecting portion 3322 (see fig. 7), in other words, the connecting portions 3322 and the elastic members 331 may be disposed in a one-to-one correspondence, so that the main body portion 3321 can stably move along the elastic direction of the elastic members 331, thereby pushing the swing arm 321 to stably move in the flattening direction of the hinge assembly 30. For example, the two connection portions 3322 may be symmetrically disposed on both sides of the axis of the main body portion 3321 to improve the symmetry of the loading points of the two elastic members 331 on the main body portion 3321.

Fig. 17 is a schematic view of another hinge assembly in a folded screen device according to an embodiment of the present application in a flattened configuration. Referring to fig. 17, the hinge assembly 30 may further include a cover plate 34, and the cover plate 34 covers a notch provided in the mounting groove 311, wherein the notch is located on a surface of the spindle mechanism 31 facing away from the flexible screen 10.

In the embodiment of the present application, a cover plate 34 is covered on the notch of the mounting groove 311 to limit the movement of the elastic component 33 in the depth direction of the mounting groove 311, so that the elastic component 33 is controlled to move in the horizontal direction, and the swing arm 321 is ensured to move in the flattening direction under the driving of the elastic component 33. In addition, the cover plate 34 also has the function of isolating external dust and the like, so that the elastic component 33 is prevented from being polluted and blocked, and the service life of the elastic component 33 is prolonged.

Fig. 18 is a schematic view of the structure of the cover plate of fig. 17. Referring to fig. 17 and 18, when the cover plate 34 is specifically disposed, the cover plate may include a main body portion 341 and two engaging portions 342, the two engaging portions 342 are respectively disposed on one side of the main body portion 341, the main body portion 341 covers the notch of the mounting groove 311, and the two engaging portions 342 are respectively engaged with two opposite side walls of the mounting groove 311, so as to improve the stability of the cover plate 34 on the mounting groove 311.

In practical applications, the swing arm 321 of each rotating mechanism 32 may be multiple, and multiple swing arms 321 are spaced along the axial direction of the spindle mechanism 31. Accordingly, there may be a plurality of elastic assemblies 33, and a plurality of elastic assemblies 33 are disposed in one-to-one correspondence with the plurality of swing arms 321.

For example, each of the rotating mechanisms 32 includes three swing arms 321, which are a first swing arm, a second swing arm, and a third swing arm, where the first swing arm, the second swing arm, and the third swing arm are disposed at intervals along an axial direction of the spindle mechanism 31, and three elastic assemblies 33 are disposed at intervals along the axial direction on the spindle mechanism 31, which are respectively a first elastic assembly, a second elastic assembly, and a third elastic assembly, where a first end of the first elastic assembly abuts against the spindle mechanism 31, a second end of the first elastic assembly is configured to drive the first swing arm to move away from the spindle mechanism 31 when the rotating mechanism 32 rotates to the flat state, a first end of the second elastic assembly abuts against the spindle mechanism 31, a second end of the second elastic assembly is configured to drive the second swing arm to move away from the spindle mechanism 31 when the rotating mechanism 32 rotates to the flat state, a first end of the third elastic assembly abuts against the spindle mechanism 31, and a second end of the third elastic assembly is configured to drive the third swing arm to move away from the spindle mechanism 31 when the rotating mechanism 32 rotates to the flat state, so that the rotating mechanisms 32 formed by the first swing arm, and the third swing arm drive the flexible swing arm to move away from the screen 10 at the flat state, thereby ensuring that the screen assembly 10 is located on the flat screen.

According to the embodiment of the application, the plurality of elastic assemblies 33 are arranged, and each elastic assembly 33 is respectively arranged on one side of the corresponding swing arm 321, so that each swing arm 321 can be driven by the elastic assembly 33 when rotating to the flattening state, and moves away from the main shaft mechanism 31 in the flattening direction, and therefore it is further ensured that the rotating mechanism 32 and the structural member 20 can stably move along the flattening direction, and the flexible screen 10 is ensured to be flattened.

Referring to fig. 7, each rotating mechanism 32 may further include at least one housing link 322, and when the second end of the swing arm 321 is connected to the corresponding structural member 20, the second end of the swing arm 321 may be indirectly connected to the corresponding structural member 20 through the housing link 322, for example, the second end of the swing arm 321 is rotatably connected to the housing link 322, and the housing link 322 is connected to the corresponding structural member 20. For example, the housing link 322 is connected to the center frame of the folding screen device.

The swing arm 321 of the embodiment of the application is connected with the structural member 20 through the shell connecting rod 322, so that the connection stability of the swing arm 321 and the structural member 20 is improved. In addition, the swing arm 321 can drive the structural component 20 (e.g., the middle frame) to move through the housing link 322 during the movement process, so that the structural component 20 and the rotating mechanism 32 can drive the flexible screen 10 to be flattened when in the flattened state.

It will be appreciated that the housing link 322 has a connector 32a at one end (see fig. 5), and the housing link 322 may be connected to the structure 20 by the connector 32 a.

It can be understood that, when the rotating mechanism 32 includes a plurality of swing arms 321, a plurality of shell links 322 are provided, and the plurality of shell links 322 are disposed in one-to-one correspondence with the swing arms 321, in other words, the second end of each swing arm 321 is connected to the corresponding shell link 322, and each shell link 322 is connected to the structural member 20, so that the plurality of swing arms 321 drive the structural member 20 to move through the corresponding shell links 322.

With continued reference to fig. 17, each rotation mechanism 32 may further include a support plate 323, the support plate 323 includes a first surface 3231 and a second surface 3232 disposed opposite to each other, the swing arm 321 and the housing link 322 are disposed on the first surface 3231 side of the support plate 323, the housing link 322 is connected (e.g., can be rotatably connected) to the support plate 323, and the flexible screen 10 (e.g., the third display region 13) is connected (e.g., adhesively connected by a glue layer) to the second surface 3232.

It will be appreciated that for a folded screen device in which the screen is folded in, first surface 3231 of support plate 323 is an outer surface of support plate 323, second surface 3232 of support plate 323 is an inner surface of support plate 323, and flexible screen 10 is disposed on the inner surface of support plate 323.

In the embodiment of the present application, the swing arm 321 and the housing link 322 are located on the first surface 3231 of the support plate 323, and the flexible screen 10 is disposed on the second surface 3232 of the support plate 323, so that when the swing arm 321 and the housing link 322 are driven by the elastic component 33 to move away from the spindle mechanism 31, the support plate 323 is driven by the housing link 322 to move away from the spindle mechanism 31, so as to stably drive the flexible screen 10 on the second surface 3232 of the support plate 323 to move continuously in the flattening direction, so that the flexible screen 10 is flattened.

In addition, the arrangement of the supporting plate 323 improves the fitting degree of the flexible screen 10 on the surface of the rotating mechanism 32, and further improves the flatness of the flexible screen 10 in the use state.

It should be noted that the numerical values and numerical ranges related to the embodiments of the present application are approximate values, and there may be a certain range of errors depending on the manufacturing process, and the error may be considered as negligible by those skilled in the art.

In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the embodiments of the application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Claims (16)

1. A folding screen device, comprising a flexible screen (10), two structural members (20) and a hinge assembly (30) between the two structural members (20), wherein the flexible screen (10) is positioned on the same side surface of the two structural members (20) and the hinge assembly (30);

the hinge assembly (30) comprises a main shaft mechanism (31) and two rotating mechanisms (32) which are positioned at two sides of the main shaft mechanism (31) and are rotationally connected with the main shaft mechanism (31);

each rotating mechanism (32) comprises at least one swing arm (321), a first end of each swing arm (321) is rotatably connected with the main shaft mechanism (31), and a second end of each swing arm (321) is connected with the corresponding structural part (20);

be equipped with elastic component (33) on main shaft mechanism (31), the first end of elastic component (33) with main shaft mechanism (31) are connected, the second end of elastic component (33) is used for slewing mechanism (32) rotate to the exhibition flat state time with the first end butt of swing arm (321), just elastic component (33) are in slewing mechanism (32) rotate the compressive capacity when extremely the exhibition flat state and are greater than slewing mechanism (32) rotate the compressive capacity when extremely folding state.

2. A folding screen apparatus according to claim 1, wherein the spindle mechanism (31) has a mounting slot (311) thereon, and a side of the mounting slot (311) facing the swing arm (321) has an opening (311 a);

at least part of the elastic component (33) is accommodated in the mounting groove (311), a first end of the elastic component (33) is abutted against the inner wall of the mounting groove (311), and a second end of the elastic component (33) is matched with a first end of the swing arm (321) through the opening (311 a).

3. A folding screen apparatus according to claim 2, wherein the spindle mechanism (31) further has a fitting hole (312), the first end of the swing arm (321) is rotatably disposed in the fitting hole (312), the mounting slot (311) is located on a side of the fitting hole (312) facing away from the corresponding structural member (20), and the opening (311 a) faces the fitting hole (312).

4. A folding screen apparatus according to claim 2 or 3, wherein the resilient assembly (33) comprises a resilient member (331) and a push block (332);

one end of the elastic piece (331) abuts against the inner wall of the mounting groove (311), one end of the push block (332) abuts against the other end of the elastic piece (331), and the other end of the push block (332) is matched with the first end of the swing arm (321).

5. The folding screen device according to claim 4, wherein a first end surface of the swing arm (321) is provided with a limiting groove (3211), a surface of the pushing block (332) is provided with a protrusion (332 a), and when the swing arm (321) rotates to the flat state, the protrusion (332 a) is embedded in the limiting groove (3211).

6. Folding screen device according to claim 5, characterized in that the wall of the limiting groove (3211) facing the pushing block (332) has a step surface on which the projection (332 a) bears.

7. The folding screen apparatus of claim 6, wherein at least a portion of the step surface is an arc-shaped surface, and at least one surface of the projection (332 a) facing the step surface is an arc surface cooperating with the arc-shaped surface.

8. A folding screen apparatus according to any of claims 5 to 7, wherein the push block (332) comprises a main body portion (3321) and at least one connecting portion (3322);

one end of the main body part (3321) is connected with the connecting part (3322), the other end of the main body part (3321) is matched with the first end of the swing arm (321), the protruding part (332 a) is positioned on the main body part (3321), and at least part of the elastic piece (331) is sleeved on the connecting part (3322).

9. The folding screen apparatus of any of claims 5 to 8, wherein an end face of the first end of the swing arm (321) has two first major surfaces, the two first major surfaces being located on either side of the retaining groove (3211);

one surface of the main body part (3321) of the push block (332) is provided with two second main surfaces which are respectively matched with the first main surfaces, and the two second main surfaces are respectively positioned at two sides of the convex part (332 a);

and the first main surface and the second main surface are mutually matched arc-shaped surfaces.

10. A folding screen apparatus according to claim 8 or 9, wherein the connecting portions (3322) are two, and two of the connecting portions (3322) are provided at an end of the main body portion (3321) with a space therebetween;

the number of the elastic pieces (331) is two, and each elastic piece (331) is sleeved on the corresponding connecting part (3322) respectively.

11. Folding screen device according to any of claims 4 to 10, characterized in that the mounting slot (311) has abutments (311 b) on two opposite inner walls, the two abutments (311 b) forming the opening (311 a) between them;

the two opposite side walls of the push block (332) are provided with extending parts (332 b), the extending parts (332 b) are abutted by the abutting parts (311 b) in the mounting groove (311), and at least part of the push block (332) extends out of the opening (311 a).

12. A folding screen apparatus according to any of claims 2 to 11, wherein the hinge assembly (30) further comprises a cover plate (34), the cover plate (34) covering a notch provided in the mounting slot (311);

wherein the notch is located on a surface of the spindle mechanism (31) facing away from the flexible screen (10).

13. A folding screen apparatus according to any of claims 1 to 12, wherein each of said turning mechanisms (32) comprises a plurality of swing arms (321), a plurality of said swing arms (321) being provided at intervals in an axial direction of said spindle mechanism (31);

the number of the elastic assemblies (33) is multiple, and the elastic assemblies (33) and the swing arms (321) are arranged in a one-to-one correspondence mode.

14. A folding screen apparatus according to any of claims 1-13 wherein each of the turning mechanisms (32) further comprises at least one housing link (322);

the second end of swing arm (321) with casing connecting rod (322) rotate to be connected, casing connecting rod (322) with correspond structure (20) are connected.

15. A folding screen apparatus according to claim 14, wherein each of said turning mechanisms (32) further comprises a support plate (323);

the supporting plate (323) comprises a first surface and a second surface which are arranged oppositely, the swing arm (321) and the shell connecting rod (322) are arranged on the first surface, the shell connecting rod (322) is connected with the supporting plate (323), and the flexible screen (10) is arranged on the second surface.

16. A hinge assembly (30) comprising a spindle mechanism (31), and two rotating mechanisms (32) located on both sides of the spindle mechanism (31) and rotatably connected to the spindle mechanism (31);

each rotating mechanism (32) comprises at least one swing arm (321), a first end of each swing arm (321) is rotatably connected with the main shaft mechanism (31), and a second end of each swing arm (321) is connected with a structural member (20) of the folding screen device;

be equipped with elastic component (33) on main shaft mechanism (31), the first end of elastic component (33) with main shaft mechanism (31) are connected, the second end of elastic component (33) is used for slewing mechanism (32) rotate to the exhibition flat state time with the first end butt of swing arm (321), just elastic component (33) are in slewing mechanism (32) rotate the compressive capacity when extremely the exhibition flat state and are greater than slewing mechanism (32) rotate the compressive capacity when extremely folding state.

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