CN116820191A

CN116820191A - Hinge mechanism and folding screen equipment

Info

Publication number: CN116820191A
Application number: CN202311106436.4A
Authority: CN
Inventors: 廖亚飞; 董长富; 陈瑞豪; 董绍洪; 金开放
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-08-30
Filing date: 2023-08-30
Publication date: 2023-09-29
Anticipated expiration: 2043-08-30
Also published as: CN116820191B

Abstract

The application provides a hinge mechanism and folding screen equipment, relates to the technical field of folding products, and can improve the shock resistance of the hinge mechanism and reduce the possibility of damage of the hinge mechanism when the whole machine falls or is impacted by external force. The hinge mechanism comprises a first supporting piece, a second supporting piece and a first transmission assembly. The second support piece comprises a bearing part, a connecting part and a support main body. The first supporting piece is positioned at a first position, the first supporting piece is borne on the bearing part, and the surface of the first supporting piece, which is opposite to the bearing part, is a first supporting surface. The second support piece is provided with a second support surface which is coplanar with and faces the same as the first support surface. The connecting part is fixedly connected between the supporting main body and the bearing part. The first transmission assembly is connected between the first support piece and the connecting part, and the first transmission assembly allows the first support piece to turn over from a first position to a second position. When the first supporting piece is in the second position, the first supporting surface faces the second supporting surface.

Description

Hinge mechanism and folding screen equipment

Technical Field

The application relates to the technical field of folding products, in particular to a hinge mechanism and folding screen equipment.

Background

Currently, folding screen devices, such as folding screen mobile phones, are increasingly used because they can realize large screen display in an unfolded state and are portable in a folded state.

The folding screen device comprises a flexible screen, a left shell, a right shell and a hinge mechanism, wherein the left shell and the right shell are used for supporting the flexible screen, and the hinge mechanism is connected between the left shell and the right shell. When the folding screen apparatus is in a folded state, the hinge region of the flexible screen is folded into a drop shape, limited by the hinge mechanism. However, the periphery of the hinge mechanism is unprotected, so that the hinge mechanism is easy to damage when the whole machine falls down or is impacted by external force.

Disclosure of Invention

The application provides a hinge mechanism and folding screen equipment, which can improve the shock resistance of the hinge mechanism and reduce the possibility of damage of the hinge mechanism when the whole machine falls or is impacted by external force.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme:

in a first aspect, a hinge mechanism is provided that includes a first support, a second support, and a first drive assembly.

The second supporting piece comprises a bearing part, a connecting part and a supporting main body.

The first supporting piece is positioned at a first position and is borne on the bearing part, and the surface of the first supporting piece, which is opposite to the bearing part, is a first supporting surface. The supporting body is provided with a second supporting surface which is coplanar with the first supporting surface and faces the same direction, and the connecting part is positioned between the supporting body and the bearing part and is fixedly connected with the supporting body and the bearing part.

The first transmission assembly is connected between the first support piece and the connecting part, and the first transmission assembly allows the first support piece to turn over from a first position to a second position. When the first supporting piece is in the second position, at least part of the first supporting piece is arranged on the supporting main body in a stacked mode, and the first supporting surface faces the second supporting surface.

In this way, the first transmission assembly allows a 180 ° tilting of the first support with respect to the second support, enabling the folding screen device to be switched between an unfolded state and a folded state. On the basis, the supporting main body is used for supporting a part of the inner screen by means of the second supporting surface, the first transmission component is connected between the connecting parts of the first supporting piece and the second supporting piece, and the bearing part is positioned on one side of the connecting part far away from the supporting main body, so that the first transmission component can be protected by means of the bearing part. When the whole machine falls, the bearing part is stressed, and the first transmission assembly is prevented from being damaged, so that the shock resistance of the hinge mechanism can be improved, and the possibility that the hinge mechanism is damaged when the whole machine falls or is impacted by external force is reduced.

In one possible implementation manner of the first aspect, the first transmission assembly includes a first bracket, a first swing arm, and a second swing arm. The first bracket is fixed on the connecting part. One end of the first swing arm and one end of the second swing arm are rotatably connected to the first support, the other end of the first swing arm and the other end of the second swing arm are rotatably connected to the first support, and the first support, the first swing arm, the second swing arm and the first support form a hinge four-bar mechanism. The user is folding screen equipment's in-process, and drive first support rotates for second support, and this hinge four-bar linkage motion mode has uniqueness, and motion stability is better, and simple structure, and the cost of manufacture is lower, can realize that first support is for the stable and reliable upset of second support.

In one possible implementation manner of the first aspect, the rotation axes of the first swing arm and the first support are first rotation axes, the rotation axes of the first swing arm and the first support are second rotation axes, the rotation axes of the second swing arm and the first support are third rotation axes, and the rotation axes of the second swing arm and the first support are fourth rotation axes. The distance from the first rotating shaft to the third rotating shaft is a first distance, the distance from the first rotating shaft to the second rotating shaft is a second distance, the distance from the second rotating shaft to the fourth rotating shaft is a third distance, and the distance from the third rotating shaft to the fourth rotating shaft is a fourth distance. Based on this, the sum of the first distance and the second distance is greater than the sum of the third distance and the fourth distance.

In a possible implementation manner of the first aspect, the first support is provided with a first chute, which comprises a first end and a second end opposite to each other. The first sliding groove extends away from the second rotating shaft from the first end portion to the second end portion, and the inner wall surface of the first end portion, which is away from the second end portion, is a first inner wall surface. The fourth rotating shaft is fixedly connected with the second swing arm, is accommodated at the first end part and can rotate in the first end part. Based on this, the first transmission assembly further comprises a first elastic member. The first elastic piece is connected with the fourth rotating shaft and is used for applying elastic force pointing to the first inner wall surface to the fourth rotating shaft. In this way, before the first supporting piece overturns from the first position to the second position and passes through the dead point, the fourth rotating shaft is kept at the first end under the limiting action of the first elastic piece and the inner wall of the first sliding groove. When the dead point is crossed, under the action of the driving force, the fourth rotating shaft overcomes the elastic force of the first elastic piece and moves towards the second end part so as to increase the length of the third distance, so that the sum of the third distance and the fourth distance can be increased to be equal to the sum of the first distance and the second distance, and the dead point compensation can be realized. After the dead point, the fourth rotating shaft is reset to the first end under the action of the elastic force of the first elastic piece, so that the movement uniqueness and reliability of the first transmission assembly are ensured.

In a possible implementation manner of the first aspect, a receiving groove is provided between the bearing portion and the support body. The connecting part comprises a first surface, the first surface and the second supporting surface face the same direction, and the accommodating groove is positioned on one side of the first surface facing. At least a first bracket in the first transmission assembly is accommodated in the accommodating groove. Therefore, by means of the accommodating groove for accommodating at least the first support of the first transmission assembly, the exposure of the at least first support of the first transmission assembly can be avoided, the appearance and the shock resistance can be ensured, and meanwhile, the at least first support of the first transmission assembly is sunk into the accommodating groove, so that the thickness of the whole machine in a folding state is reduced.

In a possible implementation manner of the first aspect, a side surface of the bearing portion facing the support body is a first side surface, a side surface of the support body facing the bearing portion is a second side surface, and the first side surface and the second side surface form opposite inner wall surfaces of the accommodating groove. The distance from the first support to the first side surface is smaller than the distance from the first support to the second side surface, and the part of the space between the first support and the second side surface of the accommodating groove is a first space. When the first supporting piece is in the second position, one part of the first supporting piece is overlapped and arranged on the supporting main body, and the other part of the first supporting piece covers an opening of one end of the first space, which is far away from the connecting part. Therefore, the overturning radius of the first supporting piece is smaller, the lengths of the first swing arm and the second swing arm can be reduced, the size of the first transmission assembly is reduced, and the size and the occupied space of the hinge mechanism are reduced.

In a possible implementation manner of the first aspect, a portion of the space of the accommodating groove between the first side surface and the first bracket is the second space. Based thereon, the hinge mechanism further comprises a shaft cover and a second transmission assembly.

Wherein the shaft cover is positioned in the second space. The second transmission assembly is connected between the first transmission assembly and the shaft cover, and when the first supporting piece is turned from the first position to the second position from the supporting main body, the first transmission assembly drives the second transmission assembly to move so as to drive the shaft cover to rotate to the third position away from the connecting part. When the shaft cover is in the third position, the shaft cover covers the opening of one end of the second space far away from the connecting part and one side of the first bracket far away from the connecting part. Therefore, by means of the shaft cover, the first transmission assembly can be covered when the first supporting piece is turned to the second position, namely, the whole machine is in a folded state, and the appearance neatness of the folding screen device is guaranteed. When the first supporting piece is positioned at the first position, the shaft cover is hidden to the second space, so that position interference between the shaft cover and the first transmission assembly can be avoided.

In one possible implementation manner of the first aspect, the second transmission assembly includes a third swing arm, a fourth swing arm, and a first transmission structure. One end of the third swing arm and one end of the fourth swing arm are rotatably connected to the first bracket, and the other end of the third swing arm and the other end of the fourth swing arm are rotatably connected to the shaft cover. The first bracket, the third swing arm, the fourth swing arm and the shaft cover form a hinge four-bar mechanism. The first transmission structure is connected between the first swing arm and the third swing arm, and when the first swing arm rotates relative to the first bracket, the third swing arm can be driven to rotate in the same direction relative to the first bracket by virtue of the first transmission structure. In this way, the driving force for driving the shaft cover to lift and the driving force for driving the first supporting member to realize 180-degree overturning are unified from the acting force applied when the user folds or unfolds the folding screen device, so that the cost can be saved.

In one possible implementation manner of the first aspect, the first transmission structure includes a first gear, a second gear, and a gear shaft. The axis of the first gear is collinear with the rotation axis of the first swing arm relative to the first bracket, and the first swing arm can drive the first gear to synchronously rotate when rotating relative to the first bracket. The axis of the second gear is collinear with the rotation axis of the third swing arm relative to the first bracket, and the second gear can drive the third swing arm to synchronously rotate relative to the first bracket when rotating. The gear shaft is rotatably connected to the first bracket, and the gear shaft comprises a third gear and a fourth gear which are coaxially arranged and fixedly connected, the third gear is meshed with the first gear, and the fourth gear is meshed with the second gear. Therefore, the first transmission structure is a gear transmission structure, the gear transmission precision is high, and the accuracy of the lifting motion of the shaft cover can be improved.

In a possible implementation manner of the first aspect, the hinge mechanism further includes a third support and a third transmission assembly. The third support piece is positioned at one end of the first space, which is far away from the connecting part, and is open. The third support piece is provided with a third support surface which is coplanar with and faces the first support surface and the second support surface. One end of the third supporting surface facing the first supporting surface is a first end, and one end of the third supporting surface facing the second supporting surface is a second end. The third transmission assembly is connected between the third supporting piece and the first transmission assembly. When the first supporting piece is turned from the first position to the second position, the first transmission assembly further drives the third transmission assembly to move so as to drive the first end of the third supporting piece to incline into the first space relative to the second end. Therefore, when the first supporting piece is positioned at the first position, a part of the inner screen can be supported by the third supporting piece, the supporting effect on the inner screen is improved, and local sinking is avoided. When first support piece is in the second position, third support piece slope subsides in to first space, can form to dodge to interior screen, avoid interior screen damage, interior screen can be folded into half water droplet form, can increase the interior dog-ear of interior screen, increase of service life.

In a possible implementation manner of the first aspect, the third support comprises a body. The third transmission assembly comprises a second bracket, a third bracket, a fifth swing arm, a sixth swing arm and a second transmission structure. The second bracket is positioned in the first space and is fixedly connected to the connecting part. The third bracket is fixedly connected to the support main body. One end of the fifth swing arm is rotatably connected to the second bracket, one end of the sixth swing arm is rotatably connected to the third bracket, and the other end of the fifth swing arm and the other end of the sixth swing arm are rotatably connected to the body. The second bracket, the third bracket, the fifth swing arm, the sixth swing arm and the body form a hinge four-bar mechanism. Based on the above, the second transmission structure is connected between the second swing arm and the fifth swing arm, and when the second swing arm rotates relative to the first bracket, the second swing arm can drive the fifth swing arm to rotate in opposite directions relative to the second bracket by means of the second transmission structure. The motion mode of the hinge four-bar mechanism is unique, the motion stability of the third supporting piece can be guaranteed, and the hinge four-bar mechanism is simple in structure and can reduce cost. Meanwhile, a driving mechanism is not required to be additionally arranged, and the driving force for driving the third supporting piece to lift and the driving force for driving the first supporting piece to realize 180-degree overturning are unified from acting force applied when a user folds or unfolds the folding screen device, so that the cost can be saved.

In a possible implementation manner of the first aspect, the third support includes a body and a sliding portion. The body is equipped with the slide rail, and the slide rail extends along the direction that first end directional second end. The sliding part is connected with the sliding rail in a sliding way.

Based on the above, the third transmission assembly comprises a second bracket, a third bracket, a fifth swing arm, a sixth swing arm and a second transmission structure. The second bracket is positioned in the first space and is fixedly connected to the connecting part. The third bracket is fixedly connected to the support main body. One end of the fifth swing arm is rotatably connected to the second bracket, and the other end of the fifth swing arm is rotatably connected to the sliding part. One end of the sixth swing arm is rotatably connected to the third bracket, and the other end of the sixth swing arm is rotatably connected to the body. The second transmission structure is connected between the second swing arm and the fifth swing arm, and when the second swing arm rotates relative to the first bracket, the second swing arm can drive the fifth swing arm to rotate in opposite directions relative to the second bracket by means of the second transmission structure. Thus, the second bracket, the third bracket, the fifth swing arm, the sixth swing arm and the third support piece form a four-bar mechanism, and the third support piece can be driven to incline into the first space in the process that the fifth swing arm or the sixth swing arm swings towards the connecting part. In the tilting process, the sliding part is forced to slide along the sliding rail so as to adjust the length of the rod where the third supporting piece is located, so that the length of the fifth swing arm, the length of the sixth swing arm and the width of the third supporting piece can be reduced, and the third supporting piece is conveniently accommodated in a first space with limited space.

In a possible implementation manner of the first aspect, the body includes a support portion and a connection seat. The third supporting surface is located on the supporting portion. The connecting seat is positioned on one side of the supporting part, which is opposite to the third supporting surface, and is fixedly connected with the supporting part, the other end of the sixth swing arm is rotatably connected with the connecting seat, and the sliding rail is arranged on the connecting seat. Therefore, the body of the third supporting piece is formed by assembling two structural parts, wherein the supporting part can be manufactured into a large-area plate-shaped structure so as to improve the supporting effect on the inner screen, and the connecting seat can be manufactured into a small-volume block-shaped structure, so that the surrounding gaps of the connecting seat are larger, and a user can conveniently connect the third transmission assembly on the connecting seat. In particular, the assembling step of the folding screen device may include: the connecting seat is connected with the third transmission assembly, and then the supporting part is connected to the connecting seat, so that the assembly difficulty can be reduced.

In a possible implementation manner of the first aspect, the hinge mechanism further includes a fourth support. The fourth support piece is located between the third support piece and the support main body, and the fourth support piece is fixedly connected to the sixth swing arm, and the surface of the fourth support piece, which is opposite to the sixth swing arm, is a fourth support surface. The fourth supporting surface is coplanar with and faces the third supporting surface and the second supporting surface. Thus, by means of the fourth supporting piece, the inner screen can be supported at the other part, the supporting stability of the inner screen is improved, and the inner screen is prevented from partially collapsing.

In a possible implementation manner of the first aspect, the connection seat is provided with a first circular arc chute. The first arc-shaped chute comprises a third end and a fourth end which are opposite, and extends from the third end to the fourth end in a direction away from the supporting portion. The connecting seat is a first rotating axis relative to the rotating axis of the sixth swing arm, the first circular arc chute is positioned on one side of the first rotating axis far away from the sixth swing arm, the circular axis corresponding to the first circular arc chute is collinear with the first rotating axis, and the inner wall surface of the fourth end part far away from the third end part is a second inner wall surface. The sixth swing arm is provided with a first sliding piece, and the first sliding piece is positioned at the fourth end and is contacted with the second inner wall surface. In this way, the first sliding member can be stopped by the second inner wall surface to prevent the connecting seat from continuing to rotate towards the inner screen side relative to the sixth swing arm after being in the flattened state relative to the sixth swing arm. The structure is simple and the cost is low.

In a possible implementation manner of the first aspect, a surface of the support body facing away from the second support surface is the second back surface. The third bracket is provided with a second arc-shaped chute, the second arc-shaped chute comprises a fifth end part and a sixth end part which are opposite, and the second arc-shaped chute extends to the second back surface from the fifth end part to the sixth end part. The sixth swing arm is a second rotation axis relative to the rotation axis of the third support, the second circular arc chute is located on one side, far away from the sixth swing arm, of the second rotation axis, the circular axis corresponding to the second circular arc chute is collinear with the second rotation axis, and the inner wall surface, far away from the fifth end, of the sixth end is a third inner wall surface. The sixth swing arm is provided with a second slider which is located at the sixth end portion and is in contact with the third inner wall surface. In this way, the second slider can be stopped by the third inner wall surface to prevent the sixth swing arm from continuing to rotate toward the screen side with respect to the third bracket after being in the flattened state with respect to the third bracket. The structure is simple and the cost is low.

In a possible implementation manner of the first aspect, a second elastic member is connected between the connection seat and the sixth swing arm, where the second elastic member is configured to apply an elastic force to the connection seat, and the elastic force prevents the connection seat from rotating relative to the sixth swing arm. Therefore, the second elastic piece is matched with the first stopping mechanism, so that the relative position of the connecting seat and the sixth swing arm in the folded state can be kept, and the connecting seat is prevented from rotating relative to the sixth swing arm. The structure is simple, and the inner screen can be stably supported.

In a possible implementation manner of the first aspect, the hinge mechanism further includes a resilient lever. One end of the elastic rod is rotatably connected to the second bracket, the other end of the elastic rod is rotatably connected to the connecting seat, and the elastic rod is used for applying elastic force far away from the second bracket to the connecting seat. In this way, the second elastic piece is matched with the first stopping mechanism, the relative position of the connecting seat and the sixth swing arm is kept at the flattening position, and the elastic rod is further used for keeping the relative position of the sixth swing arm and the third bracket at the flattening position, so that the relative positions of the connecting seat, the sixth swing arm and the third bracket can be kept at the flattening position, and the inner screen can be supported with high strength.

In a possible implementation manner of the first aspect, the hinge mechanism further includes a first cam, a second cam, and a third elastic member. The fifth swing arm can drive the first cam to synchronously rotate when rotating relative to the second bracket, the first cam is provided with a first cam surface, and the first cam surface comprises at least one first convex surface area and at least one first concave surface area which are alternately arranged in sequence along a first circular track. The circular center line of the first circular track is collinear with the rotation axis of the fifth swing arm relative to the second bracket. The second cam has a second cam surface facing the first cam surface, the second cam surface including at least one second convex region and at least one second concave region alternately arranged in sequence along a second circular locus. The at least one second concave region is in contact with the at least one first convex region, respectively, and the at least one second convex region is in contact with the at least one first concave region, respectively. The center line of the second circular track is collinear with the center line of the first circular track. The third elastic member is connected with the second cam and is used for applying elastic force directed to the first cam to the second cam. In this way, by means of the third elastic element, it is possible to bring the at least one first convex region into close contact with the at least one second concave region, respectively, while bringing the at least one first concave region into close contact with the at least one second convex region, respectively, preventing the first cam from rotating with respect to the second cam, thus preventing the fifth swing arm from rotating with respect to the second bracket, maintaining the third support and the fourth support in the flattened position.

In a possible implementation manner of the first aspect, the second transmission structure includes a first transmission gear, a second transmission gear, a rack, a first set of intermediate gears, and a second set of intermediate gears. The central axis of the first transmission gear is collinear with the rotation axis of the second swing arm relative to the first bracket, and the second swing arm can drive the first transmission gear to synchronously rotate when rotating relative to the first bracket. The central axis of the second transmission gear is collinear with the rotation axis of the fifth swing arm relative to the second bracket, and the second transmission gear can drive the fifth swing arm to synchronously rotate relative to the second bracket when rotating. The rack is slidably connected to the second support along the first direction. The first direction is parallel to the second supporting surface and perpendicular to the central axes of the first transmission gear and the second transmission gear. The first group of intermediate gears are arranged between the first transmission gear and the rack, and the second group of intermediate gears are arranged between the rack and the second transmission gear and are used for enabling the rotation directions of the first transmission gear and the second transmission gear to be opposite. Like this, second transmission structure is rack and pinion transmission structure, and rack and pinion transmission's precision is higher, can promote third support piece elevating movement's accuracy.

In a second aspect, there is also provided a folding screen apparatus comprising a folding screen, a first housing, a second housing and a hinge mechanism as described in any of the above claims. The folding screen includes a first folding screen portion, a second folding screen portion, and a third folding screen portion connected between the first folding screen portion and the second folding screen portion. The first folding screen part is arranged on the first shell. The second folding screen part is arranged on the second shell. The second support piece of the hinge mechanism is connected with the first shell, the first support piece of the hinge mechanism is connected with the second shell, and the third folding screen part is arranged on the hinge mechanism.

The folding screen device provided by the application comprises the hinge mechanism according to any technical scheme, so that the folding screen device and the hinge mechanism can solve the same problems and achieve the same effects.

Drawings

Fig. 1 is a perspective view of a folding screen apparatus according to some embodiments of the present application in an unfolded state;

FIG. 2 is a schematic view of the folding screen apparatus of FIG. 1 in a folded state;

FIG. 3 is a perspective view of the first intermediate frame, the second intermediate frame and the hinge mechanism of the folding screen apparatus of FIG. 1 in an unfolded state, at one viewing angle;

FIG. 4 is a perspective view of the first intermediate frame, the second intermediate frame and the hinge mechanism of the folding screen apparatus of FIG. 1 in an expanded state, at another view angle;

FIG. 5 is a schematic cross-sectional view of the internal hinge mechanism in the direction A-A of the folding screen apparatus of FIG. 4 in an unfolded state;

FIG. 6 is a schematic cross-sectional view of the internal hinge mechanism of the folding screen apparatus of FIG. 2 in a folded state;

FIG. 7 is an enlarged view of a portion of region I of the folding screen apparatus of FIG. 3;

FIG. 8 is a perspective view of the flip assembly within the folding screen apparatus of FIG. 7 when the folding screen apparatus is in a folded state;

FIG. 9 is a simplified illustration of the position of the flip assembly of the folding screen apparatus of FIGS. 7 and 8 in an unfolded state and a folded state;

FIG. 10 is a perspective view of the flip assembly of FIG. 7 in another orientation;

FIG. 11 is a schematic view illustrating the relative positions of the first chute and the fourth shaft in the turnover assembly shown in FIG. 10;

FIG. 12 is a schematic view of the flip assembly of the folding screen apparatus of FIGS. 7 and 8 in an unfolded state;

FIG. 13 is a schematic view of a flipping assembly provided in accordance with further embodiments of the application;

FIG. 14 is a schematic view of a flipping assembly provided in accordance with further embodiments of the application;

FIG. 15 is a perspective cross-sectional view of the lid lifter assembly of the folding screen apparatus of FIG. 5 in an unfolded state;

FIG. 16 is a perspective cross-sectional view of the lid lifter assembly of the folding screen apparatus of FIG. 6 in a folded condition;

FIG. 17 is a schematic view of the first bracket, third swing arm, fourth swing arm and shaft cover of the shaft cover lifting assembly of FIGS. 15 and 16;

FIG. 18 is a perspective view of the support lift assembly of the folding screen apparatus of FIG. 5 in an unfolded state;

FIG. 19 is a perspective view of the support lift assembly of FIG. 18 after concealing the support and the fourth support member;

fig. 20 is a perspective view of the support lift assembly of fig. 19 as seen from direction N1;

FIG. 21 is a schematic view of a four bar mechanism formed by the second bracket, the third bracket, the fifth swing arm, the sixth swing arm, and the third support member of the support lift assembly of FIGS. 19 and 20;

FIG. 22 is a perspective view of a connection structure between the second driving structure and the second swing arm in the support lift assembly shown in FIG. 19;

FIG. 23 is a perspective view of a connection structure between the second drive structure and the fifth swing arm in the support lift assembly of FIG. 19;

FIG. 24 is a front view of a second drive structure in the support lift assembly of FIGS. 22 and 23;

FIG. 25 is a front view of a second transmission structure provided in accordance with still further embodiments of the present application;

FIG. 26 is a schematic view showing the relative positions of the connection base and the sixth swing arm in the support lift assembly shown in FIG. 19 in a deployed state;

FIG. 27 is a schematic cross-sectional view of a connection structure of the connection base and the sixth swing arm in the support lift assembly shown in FIG. 26;

FIG. 28 is a perspective view of a connecting seat of the support lift assembly of FIG. 27;

FIG. 29 is a perspective view of a sixth swing arm of the support lift assembly of FIG. 27;

FIG. 30 is a schematic cross-sectional view of a connection structure of the connection base and the sixth swing arm of the support lift assembly shown in FIG. 26 at the second elastic member;

FIG. 31 is a perspective view of the support lift assembly of FIG. 19 in a collapsed condition;

fig. 32 is a view showing a comparison of a screen space of an internal hinge mechanism in an unfolded state and a folded state of a folding screen device according to an embodiment of the present application.

Detailed Description

In embodiments of the present application, the terms "first," second, "" third, "" fourth, "" fifth, "" sixth, "and seventh" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first", "second", "third", "fourth", "fifth", "sixth", "seventh" may explicitly or implicitly include one or more such feature.

In embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In embodiments of the application, unless specifically indicated otherwise, the description "coplanar" refers to substantially coplanar that allows for a range of error. The description "parallel" all means substantially parallel allowing a certain error range. The description "collinear" means substantially collinear, allowing a range of errors.

The present application provides a folding screen device, which may be a User Equipment (UE) or a terminal device (terminal) or the like, for example, the folding screen device may be a tablet (portable android device, PAD), a personal digital assistant (personal digital assistant, PDA), a handheld device having a wireless communication function, a computing device, a vehicle-mounted device, a wearable device, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (self-driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a mobile terminal in smart city (smart city), a wireless terminal in smart home (smart home), or a fixed terminal. The form of the folding screen device in the embodiment of the application is not particularly limited.

Referring to fig. 1, fig. 1 is a perspective view of a folding screen device 100 in an unfolded state according to some embodiments of the present application, and this embodiment and the following embodiments are illustrative of using the folding screen device 100 as a handheld device with a wireless communication function, for example, a mobile phone. The folding screen apparatus 100 is approximately rectangular flat plate-like in the unfolded state. For convenience of description of the embodiments hereinafter, an XYZ coordinate system is established for the folding screen apparatus 100 in the unfolded state, the length direction of the folding screen apparatus 100 is defined as the X-axis direction, the width direction of the folding screen apparatus 100 is the Y-axis direction, and the thickness direction of the folding screen apparatus 100 is the Z-axis direction. It will be appreciated that the coordinate system of the folding screen apparatus 100 may be flexibly set according to actual needs, which is not specifically limited herein. In other embodiments, the folding screen apparatus 100 may also be square flat plate, circular flat plate, oval flat plate, etc.

The folding screen apparatus 100 includes an inner screen 10 and a support device 20.

The inner screen 10 is used for displaying information such as images and videos. The inner screen 10 may be an organic light-emitting diode (OLED) screen, a micro-organic light-emitting diode (micro organic light-emitting diode) screen, a quantum dot light-emitting diode (quantum dot light emitting diode, QLED) screen, a liquid crystal display (liquid crystal display, LCD), or the like.

The inner screen 10 has a display area for displaying image information, and the display area of the inner screen 10 is exposed to facilitate presentation of information such as images, videos, and the like to a user. The inner screen 10 comprises a first inner screen portion 101, a second inner screen portion 102 and a third inner screen portion 103, the third inner screen portion 103 being connected between the first inner screen portion 101 and the second inner screen portion 102. In the folding screen apparatus 100 shown in fig. 1, the inner screen 10 is in an unfolded state, and the first inner screen portion 101, the third inner screen portion 103, and the second inner screen portion 102 are sequentially arranged in the X-axis direction, so that the folding screen apparatus 100 is folded in the lateral direction. In other embodiments, the first inner screen portion 101, the third inner screen portion 103, and the second inner screen portion 102 may also be sequentially arranged along the Y-axis direction when the inner screen 10 is in the unfolded state. Thus, the folding screen apparatus 100 is folded in the longitudinal direction. When the inner screen 10 is in the unfolded state, large screen display can be realized, so that richer information is provided for the user, and better use experience is brought to the user.

At least a third inner screen portion 103 of the inner screen 10 is a flexible screen structure. In this way, the third inner screen portion 103 may be deformed by bending when subjected to an external force, so that the inner screen 10 is folded from the unfolded state shown in fig. 1 to the folded state. The first inner screen portion 101 and the second inner screen portion 102 of the inner screen 10 may be flexible screen structures, hard screen structures, or partially flexible screen structures, or partially hard screen structures, which are not particularly limited herein.

Referring to fig. 2, fig. 2 is a schematic view illustrating a structure of the folding screen apparatus 100 shown in fig. 1 when the folding screen apparatus 100 is in a folded state, and an inner screen in the folding screen apparatus 100 is also in a folded state. Specifically, when the inner panel is in the folded state, the first inner panel portion of the inner panel is approximately parallel and opposite the second inner panel portion. The included angle θ between the first inner screen portion and the second inner screen portion is within 30 °, and both the first inner screen portion and the second inner screen portion may be considered to be approximately parallel. The first inner screen portion being opposite to the second inner screen portion means that the display surface of the first inner screen portion is facing the display surface of the second inner screen portion.

When the folding screen apparatus 100 is in the folded state, please continue to refer to fig. 2, the supporting device 20 is protected outside the inner screen, the inner screen is invisible to the user, and the inner screen can be prevented from being scratched by a hard object, the folding screen apparatus is an inwardly folded folding screen apparatus, and the size of the folding screen apparatus 100 is reduced, so that the carrying is convenient.

The support device 20 is used for carrying the inner screen 10. The support device 20 includes a first housing 201, a second housing 202, and a hinge mechanism 203. The first housing 201 carries the first inner screen portion 101 and the second housing 202 carries the second inner screen portion 102. The hinge mechanism 203 is connected between the first housing 201 and the second housing 202 and carries the third inner screen portion 103. The hinge mechanism 203 is used to enable rotation between the second housing 202 and the first housing 201 to support the inner screen 10 to fold between an unfolded state and a folded state.

In the above embodiment, optionally, referring to fig. 1 and 2, the first housing 201 may include a first middle frame 2011 and an outer screen 2012 connected together, the first inner screen portion 101 of the inner screen 10 is carried on the first middle frame 2011, the outer screen 2012 is located on a side of the first middle frame 2011 away from the first inner screen portion 101, and the outer screen 2012 may be replaced with a back cover. A housing cavity is formed between the first middle frame 2011 and the outer screen 2012, and the housing cavity is used for housing electronic components such as a circuit board. On the basis of this, the first housing 201 can be connected to the hinge mechanism 203 by means of the first intermediate frame 2011.

The second housing 202 may also include a second middle frame 2021 and a back cover 2022 connected together, the second inner screen portion 102 of the inner screen 10 is carried on the second middle frame 2021, the back cover 2022 is located on a side of the second middle frame 2021 away from the second inner screen portion 102, and the back cover 2022 may also be replaced with a display screen. A receiving cavity is formed between the second middle frame 2021 and the back cover 2022, and the receiving cavity is used for receiving electronic components such as a sub-board, a speaker module, an array, a battery, a rear camera, and the like. On the other hand, the second housing 202 may be connected to the hinge mechanism 203 via the second middle frame 2021, or may be connected to the hinge mechanism 203 via the back cover 2022. The following embodiments will be described by taking the case where the second housing 202 is connected to the hinge mechanism 203 via the second intermediate frame 2021.

Referring to fig. 3-5, fig. 3 is a perspective view of the first middle frame 2011, the second middle frame 2021, and the hinge mechanism 203 of the folding screen apparatus 100 shown in fig. 1 in one view angle, fig. 4 is a perspective view of the first middle frame 2011, the second middle frame 2021, and the hinge mechanism 203 of the folding screen apparatus 100 shown in fig. 1 in another view angle, and fig. 5 is a schematic cross-sectional structure of the internal hinge mechanism 203 of the folding screen apparatus 100 shown in fig. 4 in the unfolded state along the A-A direction.

The hinge mechanism 203 includes a flip assembly 1, a shaft cover lifting assembly 2, and a support lifting assembly 3.

The flipping assembly 1 will be described first.

The flipping assembly 1 is configured to flip the first middle frame 2011 180 ° relative to the second middle frame 2021.

The tilting assembly 1 comprises a first support 11, a second support 12 and a first transmission assembly 13.

The first supporting member 11 is fixedly connected with the first middle frame 2011, and the second supporting member 12 is fixedly connected with the second middle frame 2021. Specifically, the first supporting member 11 and the first middle frame 2011, and the second supporting member 12 and the second middle frame 2021 may be integrally formed, or may be assembled and connected by a threaded connection, a clamping connection, a welding connection, an adhesive connection, etc., and in this embodiment and the following embodiments, the first supporting member 11 and the first middle frame 2011, and the second supporting member 12 and the second middle frame 2021 are integrally formed for illustration.

The second support 12 includes a bearing portion 12a, a connecting portion 12b, and a support main 12c.

Referring to fig. 3-5, the first supporting member 11 is in a first position, in which the first supporting member 11 is carried on the carrying portion 12a, and a surface of the first supporting member 11 opposite to the carrying portion 12a is a first supporting surface M1, and the first supporting member 11 supports a portion of the inner screen 10 via the first supporting surface M1.

The second support 12 is fixedly connected to the second middle frame 2021 by means of a support main 12c. The support body 12c has a second support surface M2, the second support surface M2 being coplanar with and facing the same as the first support surface M1, and the support body 12c supports a further portion of the inner screen 10 via the second support surface M2.

The connecting portion 12b is located between the bearing portion 12a and the supporting body 12c, and the connecting portion 12b is fixedly connected with the bearing portion 12a, and the connecting portion 12b is fixedly connected with the supporting body 12c. Specifically, the connection portion 12b and the bearing portion 12a, and the connection portion 12b and the support main 12c may be integrally formed, or may be assembled and connected by a threaded connection, a clamping connection, a welding connection, an adhesive connection, or the like. The present embodiment and the following embodiments are exemplified by the connection portion 12b and the carrying portion 12a, and the connection portion 12b and the supporting body 12c being integrally formed.

On the basis of the above, please continue to refer to fig. 3-5, the first transmission assembly 13 is connected between the first supporting member 11 and the connecting portion 12b, and the first transmission assembly 13 allows the first supporting member 11 to be turned from the first position shown in fig. 3 to the second position toward the supporting body 12 c.

Referring to fig. 6, fig. 6 is a schematic cross-sectional view of the internal hinge mechanism 203 of the folding screen apparatus 100 shown in fig. 2 in a folded state. In this figure, the first support 11 is in the second position.

Referring to fig. 6, when the first supporting member 11 is in the second position, at least part of the first supporting member 11 is disposed on the supporting body 12c in a stacked manner, and the first supporting surface M1 faces the second supporting surface M2.

In this way, the first transmission assembly 13 allows to achieve a 180 ° overturning of the first support 11 with respect to the second support 12, thus achieving a 180 ° overturning of the first intermediate frame 2011 with respect to the second intermediate frame 2021. On this basis, since the supporting body 12c is used for supporting a portion of the inner screen 10 by means of the second supporting surface M2, the first transmission assembly 13 is connected between the first supporting member 11 and the connecting portion 12b of the second supporting member 12, and the bearing portion 12a is located on a side of the connecting portion 12b away from the supporting body 12c, the first transmission assembly 13 can be protected by means of the bearing portion 12 a. When the whole machine falls, the bearing part 12a is stressed to avoid damaging the first transmission assembly 13, so that the shock resistance of the hinge mechanism 203 can be improved, and the possibility of damaging the hinge mechanism 203 when the whole machine falls or is impacted by external force is reduced.

In addition, referring back to fig. 5, when the folding screen apparatus 100 is in the unfolded state, the carrying portion 12a may support the first supporting member 11 and limit the first supporting member 11, so as to prevent the first supporting member 11 from continuing to rotate to a side far from the inner screen 10, so that the inner screen 10 is kept in the flattened state.

In some embodiments, referring to fig. 5, the connecting portion 12b includes a first surface S1 and a second surface S2. The first surface S1 faces the first supporting surface M1 and the second supporting surface M2 the same. The second surface S2 is opposite to the first surface S1.

On the basis of the above, as shown in fig. 5, the surface of the bearing portion 12a facing away from the first supporting member 11 is defined as a first back surface N1, the surface of the supporting body 12c facing away from the second supporting surface M2 is defined as a second back surface N2, and the first back surface N1, the second surface S2 and the second back surface N2 are coplanar. In this way, the appearance of the second support 12 can be ensured.

On the basis of the above, since the first supporting surface M1 is coplanar with the second supporting surface M2, and the first back surface N1 is also coplanar with the second back surface N2, the sum of the thickness of the bearing portion 12a and the thickness of the first supporting piece 11 is equal to the thickness of the supporting body 12c, that is, the thickness of the first supporting piece 11 is smaller than the thickness of the supporting body 12 c. When the hinge mechanism 203 is applied to a folding screen device, referring back to fig. 1 and 2, the thickness of the first housing 201 may be thinned, so that a portion of the first housing 201 is also supported on the carrying portion 12a, and meanwhile, when the folding screen device 100 is in a folded state, the stacking thickness of the first housing 201 and the second housing 202 may be reduced, which is beneficial to improving the portability of the folding screen device 100.

On the basis of the above embodiment, the carrying portion 12a may be a hollow shell or a solid plate, which is not particularly limited in the present application. In some embodiments, referring back to fig. 2, the carrying portion 12a may be a hollow shell, and electronic components such as a front camera, a flash lamp, an earphone, an antenna, a vibration motor, a speaker module, a battery, or a display screen may be installed in the carrying portion 12 a. In this way, it is not necessary to provide these electronic components in the first housing 201, which is advantageous in reducing the thickness of the first housing 201. In the embodiment shown in fig. 2, the carrying part 12a may be provided with a front camera 01, a flash 02 and a display 03. The display screen 03 can be used for displaying information such as time, date, weather, electric quantity and the like, and can also be used for realizing fingerprint identification.

In the above embodiment, the first transmission assembly 13 may have various structural forms, for example, the first transmission assembly 13 may be a gear transmission assembly, or may be a rotation assembly formed by a rotation shaft and a shaft sleeve.

In some embodiments, referring to fig. 7 and 8, fig. 7 is a partial enlarged view of a region I of the folding screen apparatus 100 shown in fig. 3, fig. 8 is a perspective view of the tilting assembly 1 of the folding screen apparatus 100 shown in fig. 7 when the folding screen apparatus 100 is in a folded state, and the first supporting member 11 is hidden in fig. 8.

The first transmission assembly 13 includes a first bracket 131, a first swing arm 132, and a second swing arm 133.

In some embodiments, the first bracket 131 includes a plurality of first bracket units 131a. The number of the first holder units 131a is 6, and the 6 first holder units 131a are sequentially arranged at intervals along the Y axis. In this way, different parts connected to the first bracket 131 can be disposed between different first bracket units 131a in a dispersed manner, which is advantageous in reducing the difficulty of installation and the height of the first bracket 131. In other embodiments, the first bracket 131 may be an integral structure, which is not particularly limited in the present application.

The first bracket 131 is fixed to the connecting portion 12b, and specifically, the first bracket 131 and the connecting portion 12b may be integrally formed. One end of the first swing arm 132 and one end of the second swing arm 133 are rotatably connected to the first bracket 131, and the other end of the first swing arm 132 and the other end of the second swing arm 133 are rotatably connected to the first support 11. The first bracket 131, the first swing arm 132, the second swing arm 133, and the first support 11 form a hinge four-bar mechanism. The user is folding screen equipment 100 in-process, and drive first support piece 11 is rotated for second support piece 12, and this hinge four-bar linkage motion mode has uniqueness, and motion stability is better, and simple structure, and the cost of manufacture is lower, can realize first support piece 11 for the stable and reliable upset of second support piece 12.

Referring now to fig. 9, fig. 9 is a simplified illustration of the position of the tilt assembly 1 in the extended and folded positions of the folding screen apparatus 100 of fig. 7 and 8.

The rotating shafts of the first swing arm 132 and the first bracket 131 are a first rotating shaft a, the rotating shafts of the first swing arm 132 and the first supporting piece 11 are a second rotating shaft b, the rotating shafts of the second swing arm 133 and the first bracket 131 are a third rotating shaft c, and the rotating shafts of the second swing arm 133 and the first supporting piece 11 are a fourth rotating shaft d.

The portion of the first bracket 131 between the first rotation axis a and the third rotation axis c forms a fixed lever in the hinge four-lever mechanism, and the length of the fixed lever is the distance from the first rotation axis a to the third rotation axis c, which is denoted as a first distance a. The first swing arm 132 forms a link of the hinge four-bar mechanism, the length of which is the distance from the first rotation axis a to the second rotation axis b, denoted as the second distance C. The portion of the first support 11 located between the second rotation axis B and the fourth rotation axis d forms a further link of the hinge four-bar mechanism, the length of which is the distance from the second rotation axis B to the fourth rotation axis d, denoted as third distance B. The second swing arm 133 forms the last link of the hinge four-bar mechanism, the length of which is the distance from the third rotation axis c to the fourth rotation axis D, denoted as the fourth distance D.

In the foregoing embodiments and in the following embodiments, the distances between the two rotating shafts are indicated by the distances between the central axes of the two rotating shafts, and similar expressions should be understood in the following, and will not be described in detail in the following.

To form a hinged four bar mechanism, a+c should not be equal to b+d, and in particular, a+c may be greater than b+d or less than b+d. This embodiment and the following embodiments are exemplified with a+c greater than b+d, and this should not be construed as a particular limitation on the constitution of the present application.

On the basis of the above, please continue to refer to fig. 9, in order to achieve the 180 ° turning of the first support 11 relative to the second support 12, the hinge four-bar mechanism has the problem of over dead point. In the dead point position, the condition needs to be satisfied: a+c=b+d, the flip can be completed. There is a difference between this condition and the lever length relationship of the hinge four-lever mechanism, and in order to compensate for this difference, in some embodiments, referring to fig. 10, fig. 10 is a perspective view of the flip assembly 1 shown in fig. 7 in another orientation. The first supporting member 11 is provided with a first chute 14, and the fourth rotation shaft d is used for matching with the first chute 14 to realize rotatable connection.

Specifically, referring to fig. 11, fig. 11 is a schematic diagram illustrating the relative positions of the first chute 14 and the fourth rotation axis d in the turnover assembly 1 shown in fig. 10. The first runner 14 includes opposed first and second ends 14a, 14b. Along the X-axis direction, from the first end 14a to the second end 14b, the first chute 14 extends away from the second rotation axis b. The inner wall surface of the first end portion 14a away from the second end portion 14b is a first inner wall surface 14a1. The fourth rotating shaft d is fixedly connected with the second swing arm 133, and the fourth rotating shaft d is accommodated in the first end 14a and can rotate in the first end 14 a.

With continued reference to fig. 11, the first transmission assembly 13 further includes a first elastic member 134. The first elastic member 134 is connected to the fourth rotation shaft d for applying an elastic force F directed toward the first inner wall surface 14a1 to the fourth rotation shaft d. The first elastic member 134 includes, but is not limited to, a cylindrical coil spring, a tower spring, a disc spring, a rubber band or torsion spring, etc., and the present application is exemplified by using the first elastic member 134 as a cylindrical coil spring.

Thus, referring to fig. 12, fig. 12 is a schematic diagram of the structure of the turning assembly 1 in the unfolded state of the folding screen apparatus 100 shown in fig. 7 and 8, before the first supporting member 11 turns from the first position to the second position and passes the dead point, the fourth rotating shaft d is kept at the first end 14a under the limiting action of the first elastic member 134 and the inner wall of the first chute 14. At the time of the over dead point, the fourth rotation shaft D moves toward the second end portion 14B against the elastic force of the first elastic member 134 under the driving force to increase the length of the third distance B, so that b+d can be increased to be equal to a+c, whereby the over dead point compensation can be achieved. After the dead point, the fourth rotating shaft d returns to the first end 14a under the action of the elastic force of the first elastic member 134, so that the movement uniqueness and reliability of the first transmission assembly 13 are ensured.

In other embodiments, referring to fig. 13, fig. 13 is a schematic structural diagram of a turnover assembly 1 according to still other embodiments of the present application, in this embodiment, a first chute 14 and a first elastic member 134 are disposed at a position of a third rotation axis C on a first bracket 131, so that when the first rotation axis C passes through a dead point, the length of a first distance a is reduced, and a+c is reduced to be equal to b+d, thereby realizing over-dead point compensation, which is not described herein in detail.

In other embodiments, referring to fig. 14, fig. 14 is a schematic diagram of a turnover assembly 1 according to still other embodiments of the present application, in this embodiment, a first chute 14 and a first elastic member 134 are disposed at a position of a first rotation axis a on a first bracket 131, so that when the first rotation axis a passes through dead points, the length of a first distance a is reduced, and a+c is reduced to be equal to b+d, thereby realizing over dead point compensation, which is not described herein in detail.

In some embodiments, referring back to fig. 5, a receiving groove C is disposed between the bearing portion 12a and the supporting body 12C, and the receiving groove C is located on the side facing the first surface S1. Alternatively, the height H2 of the connection portion 12b in the Z-axis direction may be smaller than the heights H1 and H3 of the bearing portion 12a and the support main 12C in the Z-axis direction to form the accommodating groove C on the side toward which the first surface S1 faces. On the basis, referring to fig. 5, at least the first bracket 131 of the first transmission assembly 13 is accommodated in the accommodating groove C.

In this way, by means of the accommodating groove C accommodating at least the first bracket 131 of the first transmission assembly 13, the exposure of the at least the first bracket 131 of the first transmission assembly 13 can be avoided, the appearance and the shock resistance can be ensured, and meanwhile, the at least the first bracket 131 of the first transmission assembly 13 is sunk into the accommodating groove C, which is beneficial to reducing the thickness of the whole machine in the folded state.

In other embodiments, the height H2 of the connecting portion 12b may be equal to the height H1 of the carrying portion 12a, or the height H2 of the connecting portion 12b may be equal to the height H3 of the supporting body 12 c. In this way, the thickness of the connecting portion 12b is large, and the structural strength of the second support 12 can be ensured.

In some embodiments, with continued reference to fig. 5, the side of the bearing portion 12a facing the supporting body 12c is a first side S3, and the side of the supporting body 12c facing the bearing portion 12a is a second side S4. The first side S3 and the second side S4 form opposite inner wall surfaces of the receiving groove C.

Based on this, the distance from the first bracket 131 to the first side S3 is smaller than the distance from the first bracket 131 to the second side S4, and the partial space of the receiving groove C between the first bracket 131 and the second side S4 is the first space C1.

On the basis of the above, referring to fig. 6, when the first supporting member 11 is in the second position, a portion of the first supporting member 11 is stacked on the supporting body 12C, and another portion of the first supporting member 11 covers an end opening of the first space C1 away from the connecting portion 12 b.

In this way, the turning radius of the first supporting member 11 is smaller, so that the lengths of the first swing arm 132 and the second swing arm 133 can be reduced, and the volume of the first transmission assembly 13 is reduced, which is beneficial to reducing the volume and the occupied space of the hinge mechanism 203.

On the basis of the above, the shaft cover lifting assembly 2 will be described below.

With continued reference to fig. 5, a portion of the space of the accommodating groove C between the first side surface S3 and the first bracket 131 is defined as a second space C2.

Based on this, the shaft cover lifting assembly 2 includes a shaft cover 21 and a second transmission assembly 22.

The shaft cover 21 is positioned in the second space C2, whereby the position interference between the shaft cover 21 and the first transmission assembly 13 can be avoided. The second transmission assembly 22 is connected between the first transmission assembly 13 and the shaft cover 21. When the first supporting member 11 is turned from the first position shown in fig. 5 to the second position shown in fig. 6 toward the supporting body 12c, the first transmission assembly 13 drives the second transmission assembly 22 to move, so as to drive the shaft cover 21 to rotate to the third position away from the connecting portion 12 b.

Referring to fig. 6, when the shaft cover 21 is in the third position, the shaft cover 21 covers an opening of an end of the second space C2 away from the connecting portion 12b and a side of the first bracket 131 away from the connecting portion 12 b.

In this way, by means of the shaft cover 21, the first transmission assembly 13 can be covered when the first supporting member 11 is turned to the second position, that is, when the whole machine is in the folded state, so as to ensure the appearance neatness of the folding screen device.

In the above embodiment, the second transmission assembly 22 may be a gear transmission assembly, a worm gear transmission assembly, or the like.

In some embodiments, referring to fig. 15 and 16, fig. 15 is a perspective cross-sectional view of the cover lifting assembly 2 when the folding screen apparatus 100 shown in fig. 5 is in an unfolded state, and fig. 16 is a perspective cross-sectional view of the cover lifting assembly 2 when the folding screen apparatus 100 shown in fig. 6 is in a folded state. The first swing arm 132 and the second swing arm 133 are hidden in fig. 15 and 16, and the mounting position of the first swing arm 132 on the first bracket 131 is K1.

The second transmission assembly 22 includes a third swing arm 221, a fourth swing arm 222, and a first transmission structure 223.

One end of the third swing arm 221 and one end of the fourth swing arm 222 are rotatably connected to the first bracket 131, and the other end of the third swing arm 221 and the other end of the fourth swing arm 222 are rotatably connected to the shaft cover 21. Referring to fig. 17, fig. 17 is a schematic diagram of the first bracket 131, the third swing arm 221, the fourth swing arm 222, and the shaft cover 21 of the shaft cover lifting assembly 2 shown in fig. 15 and 16. The first bracket 131, the third swing arm 221, the fourth swing arm 222, and the shaft cover 21 form a hinge four-bar mechanism. In order to achieve the purpose of forming a hinge four-bar mechanism, the sum of the lengths of two adjacent bars of the four-bar mechanism is unequal to the sum of the lengths of two other adjacent bars.

The motion mode of the hinge four-bar mechanism has uniqueness, can ensure the stability of the motion of the shaft cover 21, has a simple structure, and can reduce the manufacturing cost.

On the basis of the above, the first transmission structure 223 is connected between the first swing arm 132 (shown in fig. 7 and 8) and the third swing arm 221. When the first swing arm 132 rotates relative to the first bracket 131, the first transmission structure 223 can drive the third swing arm 221 to rotate in the same direction relative to the first bracket 131. The same direction herein means both clockwise rotation or both counterclockwise rotation.

In this way, the driving force for lifting and lowering the driving shaft cover 21 and the driving force for driving the first support 11 to achieve 180 ° tilting are unified from the force applied when the user folds or unfolds the folding screen apparatus, without adding an additional driving mechanism, so that costs can be saved.

In the above embodiment, the first transmission structure 223 has various structural forms, such as a gear transmission mechanism, a sprocket transmission mechanism, a pulley transmission mechanism, a planetary gear train mechanism, and the like.

In some embodiments, referring back to fig. 15 and 16, the first transmission structure 223 includes a first gear 223a (shown in fig. 7 and 8), a second gear 223b, and a gear shaft 223c.

Referring to fig. 7 and 8, the axis of the first gear 223a is collinear with the rotational axis of the first swing arm 132 with respect to the first bracket 131. The first swing arm 132 can drive the first gear 223a to rotate synchronously when rotating relative to the first bracket 131.

In order to enable the first swing arm 132 to drive the first gear 223a to rotate synchronously, optionally, the first gear 223a is fixedly connected with the first swing arm 132, and specifically, the first gear 223a and the first swing arm 132 may be fixedly connected in an integrally formed manner. In this way, the hinge mechanism 203 has a simple structure, and can improve the mounting efficiency.

In other embodiments, the first gear 223a and the first swing arm 132 may be fixedly connected, or the non-circular hole and the shaft are cooperatively connected to the same connecting shaft, so that the first swing arm 132 can drive the first gear 223a to rotate synchronously.

Referring to fig. 15 and 16, the axis of the second gear 223b is collinear with the rotational axis of the third swing arm 221 relative to the first bracket 131. The second gear 223b can drive the third swing arm 221 to rotate synchronously relative to the first bracket 131 when rotating.

In order to enable the second gear 223b to drive the third swing arm 221 to rotate synchronously relative to the first bracket 131, optionally, the second gear 223b is fixedly connected with the third swing arm 221, and specifically, the second gear 223b and the third swing arm 221 may be fixedly connected in an integrally formed manner. In this way, the hinge mechanism 203 has a simple structure, and can improve the mounting efficiency.

In other embodiments, the second gear 223b and the third swing arm 221 may be fixedly connected, or the non-circular hole and the shaft are cooperatively connected to the same connecting shaft, so that the second gear 223b can drive the third swing arm 221 to rotate synchronously relative to the first bracket 131.

The gear shaft 223c is rotatably connected to the first bracket 131, and the gear shaft 223c includes a third gear 223c1 and a fourth gear 223c2 coaxially disposed and fixedly connected. On the basis of this, the third gear 223c1 is meshed with the first gear 223a, and the fourth gear 223c2 is meshed with the second gear 223 b.

In this way, the first transmission structure 223 is a gear transmission structure, and the accuracy of gear transmission is high, so that the accuracy of the lifting motion of the shaft cover 21 can be improved.

The supporting elevating assembly 3 will be described.

Referring back to fig. 5, the support lift assembly 3 includes a third support 31 and a third transmission assembly 32.

The third support 31 is located at an end of the first space C1 remote from the connecting portion 12b and is open. The third supporting member 31 has a third supporting surface M3, the third supporting surface M3 is coplanar with and faces the first supporting surface M1 and the second supporting surface M2, and the third supporting member 31 supports a further portion of the inner screen 10 via the third supporting surface M3. Based on this, an end of the third supporting surface M3 facing the first supporting surface M1 is defined as a first end D1, and an end of the third supporting surface M3 facing the second supporting surface M2 is defined as a second end D2.

On the basis of the above, the third transmission assembly 32 is connected between the third support 31 and the first transmission assembly 13. When the first supporting member 11 is turned from the first position to the second position, the first transmission assembly 13 further drives the third transmission assembly 32 to move, so as to drive the first end D1 of the third supporting member 31 to tilt into the first space C1 relative to the second end D2.

Referring to fig. 6, fig. 6 is a schematic structural diagram of the third supporting member 31 after being inclined into the first space C1, and in the folded state, an included angle α between the third supporting surface M3 and the second supporting surface M2 may be greater than 90 ° and less than 180 °. Specifically, the included angle α may be 100 °, 120 °, 150 ° or 170 °, and the embodiment of the present application is exemplified by the included angle α being equal to 150 °.

In this way, when the first supporting member 11 is in the first position, a portion of the inner screen 10 can be supported by the third supporting member 31, so as to improve the supporting effect on the inner screen 10 and avoid local recess. When the first supporting piece 11 is in the second position, the third supporting piece 31 is inclined and sunk into the first space C1, so that avoidance can be formed on the inner screen 10, damage to the inner screen 10 is avoided, the inner screen 10 can be folded into a semi-water drop shape, the inner folding angle of the inner screen 10 can be increased, and the service life is prolonged.

In the above embodiment, the third supporting member 31 may be a structural whole or may be assembled from a plurality of structural members.

In some embodiments, referring to fig. 18, fig. 18 is a perspective view of the support lift assembly 3 when the folding screen apparatus of fig. 5 is in an unfolded state. The third support 31 includes a body including a support portion 311 and a connection seat 312.

The supporting portion 311 may also be referred to as a door panel, and the third supporting surface M3 is located on the supporting portion 311. The connecting seat 312 is located at a side of the supporting portion 311 opposite to the third supporting surface M3, and is fixedly connected to the supporting portion 311. Specifically, the connection seat 312 and the supporting portion 311 can be fixedly connected by means of threaded connection, clamping, welding, bonding and the like, and the application is exemplified by the clamping and fixing of the connection seat 312 and the supporting portion 311, and the installation efficiency in the clamping and fixing process is high.

On the basis of the above, the third transmission assembly 32 is connected between the first transmission assembly 13 and the connection seat 312.

In this way, the body of the third supporting member 31 is assembled by two structural members, wherein the supporting portion 311 can be made into a large-area plate structure to improve the supporting effect on the inner screen 10, and the connecting base 312 can be made into a small-volume block structure, so that the surrounding space of the connecting base 312 is larger, and the user can conveniently connect the third transmission assembly 32 on the connecting base 312. Specifically, the assembling steps of the folding screen apparatus 100 may include: the connecting seat 312 is connected with the third transmission assembly 32, and then the supporting part 311 is connected with the connecting seat 312, so that the assembly difficulty can be reduced.

In some embodiments, with continued reference to fig. 18, the support lift assembly 3 further includes a fourth support 33, the fourth support 33 being located between the third support 31 and the support body 12 c. The fourth support 33 has a fourth support surface M4, and the fourth support surface M4 is coplanar with and faces the third support surface M3 and the second support surface M2. The fourth support surface M4 is for supporting a further portion of the inner screen 10.

Thus, by means of the fourth support 33, a further portion of the inner screen 10 can be supported, improving the stability of the support of the inner screen 10, preventing partial collapse of the inner screen 10.

In the above embodiment, the third transmission assembly 32 may be a transmission assembly formed by a plurality of gears and racks, or may be a transmission assembly formed by a gear and a shift lever, which is not particularly limited in the present application.

In some embodiments, referring to fig. 19 and 20, fig. 19 is a perspective view of the support lift assembly 3 shown in fig. 18 after hiding the support portion 311 and the fourth support member 33, and fig. 20 is a perspective view of the support lift assembly 3 shown in fig. 19 when viewed from the direction N1.

The body of the third support member 31 is provided with a sliding rail 31a, and the sliding rail 31a extends along a direction (i.e. the X-axis direction) in which the first end D1 points to the second end D2. Alternatively, referring to fig. 19, the sliding rail 31a may be disposed on the connecting seat 312, and in other embodiments, the sliding rail 31a may be disposed on the supporting portion 311. The slide rail 31a may be a slide rail or a saddle type slide rail.

For example, please refer to fig. 19 and 20 with emphasis, the sliding rail 31a is a sliding rail, and specifically, the sliding rail includes a first sliding groove 31a1 and a second sliding groove 31a2 opposite to each other, and an opening of the first sliding groove 31a1 is opposite to an opening of the second sliding groove 31a 2.

Based on this, as shown in fig. 19 and 20, the third supporting member 31 further includes a sliding portion 313, and as an example, the sliding portion 313 may be a slider, and the sliding portion 313 is slidably connected to the sliding rail 31a.

With continued reference to fig. 19 and 20, the third transmission assembly 32 includes a second bracket 321, a third bracket 322, a fifth swing arm 323, a sixth swing arm 324, and a second transmission structure 325.

Wherein the second bracket 321 is located in the first space C1. In some embodiments, the second holder 321 may comprise a plurality of second holder units sequentially spaced apart along the Y-axis. In this way, different components connected to the second bracket 321 can be arranged between different second bracket units in a scattered manner, which is beneficial to reducing the installation difficulty and the height of the second bracket 321. In other embodiments, the second support 321 may be an integral structure, which is not limited in the present application.

The second bracket 321 is fixedly connected to the connection portion 12b. Specifically, the second bracket 321 and the connecting portion 12b may be integrally formed, or may be assembled and connected by a threaded connection, a clamping connection, welding, bonding, or the like, and the present application is exemplified by integrally forming the second bracket 321 and the connecting portion 12b.

The third bracket 322 is fixedly coupled to the support body 12c. Specifically, the third bracket 322 and the supporting body 12c may be integrally formed, or may be assembled and connected by a threaded connection, a clamping connection, welding, bonding, etc., and the present application is exemplified by the connection of the third bracket 322 and the supporting body 12c by means of a threaded connection.

In some embodiments, referring to fig. 19, the supporting body 12C is provided with a receiving groove C3, and at least a portion of the third bracket 322 is received in the receiving groove C3. The third bracket 322 is provided with a fifth supporting surface M5, the fifth supporting surface M5 is coplanar with and faces the same as the second supporting surface M2, and the fifth supporting surface M5 is used for supporting a further part of the inner screen 10. In this way, at least a part of the third bracket 322 is sunk in the support main 12c, so that the thickness of the hinge mechanism 203 can be reduced, and at the same time, at least a part of the inner screen 10 can be supported by the fifth support surface M5, whereby the support strength for the inner screen 10 can be improved.

Referring to fig. 20, one end of the fifth swing arm 323 is rotatably connected to the second bracket 321, and the other end is rotatably connected to the sliding portion 313.

Referring to fig. 19, one end of the sixth swing arm 324 is rotatably connected to the third bracket 322, and the other end is rotatably connected to the body, and specifically, the other end of the sixth swing arm 324 is rotatably connected to the connecting seat 312 of the body.

Thus, the second bracket 321, the third bracket 322, the fifth swing arm 323, the sixth swing arm 324 and the third support member 31 form a four-bar mechanism, and referring to fig. 21, fig. 21 is a schematic diagram of the four-bar mechanism formed by the second bracket 321, the third bracket 322, the fifth swing arm 323, the sixth swing arm 324 and the third support member 31 in the support lift assembly 3 shown in fig. 19 and 20. During the swing of the fifth swing arm 323 or the sixth swing arm 324 toward the connection portion 12b (the swing direction is a1 and b 1), the third supporter 31 may be driven to tilt into the first space C1. And during the tilting movement, the sliding portion 313 is forced to slide along the sliding rail 31a to adjust the length of the rod where the third supporting member 31 is located, so that the length of the fifth swing arm 323, the length of the sixth swing arm 324 and the width of the third supporting member 31 can be reduced, and the third supporting member is convenient to be accommodated in the first space C1 with limited space.

In other embodiments, the other end of the fifth swing arm 323 and the other end of the sixth swing arm 324 may be rotatably connected to the body of the third support 31. Based on this, the bodies of the second bracket 321, the third bracket 322, the fifth swing arm 323, the sixth swing arm 324, and the third support 31 constitute a hinge four-bar mechanism. Likewise, for the purpose of forming a hinged four-bar mechanism, the sum of the lengths of two adjacent bars of the four-bar mechanism is unequal to the sum of the lengths of two other adjacent bars.

In this way, the third supporter 31 can be driven to tilt into the first space C1 during the swing of the fifth swing arm 323 or the sixth swing arm 324 to the connecting portion 12 b. The movement mode of the hinge four-bar mechanism is unique, the movement stability of the third supporting piece 31 can be ensured, and the hinge four-bar mechanism has a simple structure and can reduce the cost.

The following embodiments are further described on the basis that the other end of the fifth swing arm 323 is rotatably connected to the sliding portion 313, and the other end of the sixth swing arm 324 is rotatably connected to the body, which should not be construed as a specific limitation of the constitution of the present application.

On the basis of the above embodiment, referring to fig. 18 and 19 in combination, the fourth supporting member 33 is fixedly connected to the sixth swing arm 324, and the surface of the fourth supporting member 33 facing away from the sixth swing arm 324 forms the fourth supporting surface M4. Specifically, the fourth supporting member 33 and the sixth swing arm 324 may be integrally formed, or may be assembled and connected by a threaded connection, a clamping connection, a welding connection, an adhesive connection, or the like. The fourth support member 33 is engaged with the sixth swing arm 324 for illustration, and details are not described here.

On the basis of the above embodiment, referring back to fig. 19, the second transmission structure 325 is connected between the second swing arm 133 and the fifth swing arm 323. When the second swing arm 133 rotates relative to the first bracket 131, the second transmission structure 325 can drive the fifth swing arm 323 to rotate in opposite directions relative to the second bracket 321. The opposite direction herein means that when the second swing arm 133 rotates clockwise, the fifth swing arm 323 rotates counterclockwise; when the second swing arm 133 rotates counterclockwise, the fifth swing arm 323 rotates clockwise.

In this way, the driving force for driving the third support member 31 to lift and the driving force for driving the first support member 11 to turn 180 ° are unified from the force applied when the user folds or unfolds the folding screen apparatus, without adding an additional driving mechanism, so that costs can be saved.

The second transmission structure 325 may have various structural forms, such as a gear transmission mechanism, a rack and pinion transmission mechanism, a shift lever structure, and the like.

In some embodiments, referring to fig. 22 and 23, fig. 22 is a perspective view of a connection structure between the second transmission structure 325 and the second swing arm 133 in the support lift assembly 3 shown in fig. 19, and fig. 23 is a perspective view of a connection structure between the second transmission structure 325 and the fifth swing arm 323 in the support lift assembly 3 shown in fig. 19.

The second transmission structure 325 includes a first transmission gear 3251, a rack 3252, a second transmission gear 3253, a first set of intermediate gears, and a second set of intermediate gears.

The central axis of the first transmission gear 3251 is collinear with the rotation axis of the second swing arm 133 with respect to the first bracket 131. The second swing arm 133 can drive the first transmission gear 3251 to rotate synchronously when rotating relative to the first bracket 131.

In order to enable the second swing arm 133 to drive the first transmission gear 3251 to rotate synchronously, optionally, referring to fig. 22, the first transmission gear 3251 may be fixedly connected with the second swing arm 133, and specifically, the first transmission gear 3251 may be fixedly connected with the second swing arm 133 in an integral forming manner. The hinge mechanism 203 is thus simple in its constituent structure and convenient to assemble.

In other embodiments, the first transmission gear 3251 and the second swing arm 133 may be fixedly connected, or the non-circular hole and the shaft are cooperatively connected to the same connecting shaft, so that the second swing arm 133 can drive the first transmission gear 3251 to rotate synchronously.

Referring to fig. 23, the central axis of the second transmission gear 3253 is collinear with the rotation axis of the fifth swing arm 323 relative to the second bracket 321. When the second transmission gear 3253 rotates, the fifth swing arm 323 can be driven to synchronously rotate relative to the second bracket 321.

In order to enable the second transmission gear 3253 to drive the fifth swing arm 323 to rotate synchronously, optionally, referring to fig. 23, the third transmission assembly 32 further includes a first connecting shaft 326, and the first connecting shaft 326 is rotatably connected to the second bracket 321. The second transmission gear 3253 is fixedly connected to the first connection shaft 326, and specifically, the second transmission gear 3253 and the first connection shaft 326 may be fixedly connected in an integrally formed manner. The first connecting shaft 326 may further be provided with a flat structure K2, where the cross section of the flat structure K2 is non-circular. For example, the cross-sectional shape of the flat structure K2 may be a long strip, and in other examples, the cross-sectional shape of the flat structure K2 may be an ellipse, a triangle, a square, a polygon, or the like, which is not particularly limited in the present application. The fifth swing arm 323 is provided with a first connecting hole (not shown in the figure), the shape of the first connecting hole is the same as the cross section shape of the flat structure K2, and the fifth swing arm 323 is sleeved on the flat structure K2 by means of the first connecting hole in a matching manner. Thus, when the second transmission gear 3253 rotates, the first connection shaft 326 rotates synchronously therewith, and further drives the fifth swing arm 323 to rotate synchronously therewith via the flat structure K2.

In other embodiments, the second transmission gear 3253 may be fixedly connected with the fifth swing arm 323 through an integrally formed manner, so that the second transmission gear 3253 can drive the fifth swing arm 323 to rotate synchronously, which is not limited herein.

Rack 3252 is slidably coupled to second support 12 in a first direction. The first direction is parallel to the second supporting surface M2 and perpendicular to the central axes of the first transmission gear 3251 and the second transmission gear 3253, and the first direction is the X-axis direction.

The first set of intermediate gears is disposed between the first transfer gear 3251 and the rack 3252, and the first set of intermediate gears may include an odd number of first intermediate gears 3254. In the embodiment shown in fig. 22, the number of first intermediate gears 3254 is one.

In other embodiments, the number of first intermediate gears 3254 can also be an odd number of three or more. When the number of the first intermediate gears 3254 is an odd number of three or more, the odd number of the first intermediate gears 3254 are arranged in a row, and particularly, the arrangement track of the odd number of the first intermediate gears 3254 includes, but is not limited to, a straight line, an arc line, an S-shaped curve, an n-shaped curve, and the like, which is not particularly limited in the present application. Adjacent two first intermediate gears 3254 are meshed, and the first intermediate gears 3254 at both ends are meshed with first transmission gears 3251, racks 3252, respectively.

The second set of intermediate gears is disposed between the rack 3252 and the second transfer gear 3253, and the second set of intermediate gears may include an even number of second intermediate gears 3255. In the embodiment shown in fig. 23, the number of second intermediate gears 3255 is two.

In other embodiments, the number of second intermediate gears 3255 can also be an even number of more than four. When the number of the second intermediate gears 3255 is an even number of four or more, the even number of the second intermediate gears 3255 are arranged in a row, and particularly, the arrangement track of the even number of the second intermediate gears 3255 includes, but is not limited to, a straight line, an arc line, an S-shaped curve, an n-shaped curve, and the like, which is not particularly limited in the present application. Two adjacent second intermediate gears 3255 are meshed, and the second intermediate gears 3255 at both ends are meshed with the rack 3252 and the second transmission gear 3253, respectively.

Referring to fig. 24, fig. 24 is a front view of the second transmission structure 325 of the support lift assembly 3 shown in fig. 22 and 23.

In this way, with the first set of intermediate gears and the second set of intermediate gears, the first transfer gear 3251 can be rotated in the opposite direction as the second transfer gear 3253. Meanwhile, the second transmission structure 325 is a rack and pinion transmission structure, and the accuracy of rack and pinion transmission is high, so that the accuracy of the lifting movement of the third supporting member 31 can be improved.

In other embodiments, the number of first intermediate gears 3254 in the first set of intermediate gears may be an even number and the number of second intermediate gears 3255 in the second set of intermediate gears may be an odd number. In this way, the first transmission gear 3251 and the second transmission gear 3253 can be rotated in the opposite direction.

In other embodiments, the first set of intermediate transfer gears may not be provided, and the first transfer gear 3251 may be directly engaged with the rack 3252. Based on this, the second set of intermediate gears may include an odd number of second intermediate gears 3255 such that the first transfer gear 3251 is rotated in the opposite direction to the second transfer gear 3253.

In still other embodiments, the rack 3252 may be directly meshed with the second transfer gear 3253 without providing a second set of intermediate transfer gears. Based on this, the first set of intermediate gears may include an odd number of first intermediate gears 3254 such that the first transfer gear 3251 is rotated in the opposite direction to the second transfer gear 3253.

In other embodiments, rack 3252 may be replaced with a plurality of meshed intermediate gears.

In other embodiments, referring to fig. 25, fig. 25 is a front view of a second transmission structure 325 according to still other embodiments of the present application, the rack 3252 may be replaced by a swing link 3256, specifically, the swing link 3256 is rotatably connected to a first intermediate gear 3254 of the first set of intermediate gears, which is far from the first transmission gear 3251, and is eccentrically disposed with respect to the first intermediate gear 3254, and the swing link 3256 is rotatably connected to a second intermediate gear 3255 of the second set of intermediate gears, which is far from the second transmission gear 3253, and is eccentrically disposed with respect to the second intermediate gear 3255. When the first intermediate gear 3254 rotates, the swing rod 3256 can be driven to swing, so as to further drive the second intermediate gear 3255 to synchronously rotate. The structure is simple and easy to realize.

Referring back to fig. 21, according to the description of the above embodiments, the degree of freedom of the four-bar mechanism formed by the second bracket 321, the third bracket 322, the fifth swing arm 323, the sixth swing arm 324, and the third support member 31 is not 1, resulting in poor structural stability of the four-bar mechanism. In order to enable the third support 31 and the fourth support 33 to support the inner screen 10 with high strength when the complete machine is in the unfolded state, the support lift assembly 3 may further comprise a stop mechanism 4, an elastic mechanism and a cam mechanism 6 in some embodiments. By means of the stop mechanism 4, the elastic mechanism and the cam mechanism 6, the positional stability of the third support 31 and the fourth support 33 in the unfolded state can be ensured.

The stop mechanism 4 will be described first.

Specifically, referring to fig. 26, fig. 26 is a schematic diagram showing the relative positions of the connection seat 312 and the sixth swing arm 324 in the unfolded state of the supporting and lifting assembly 3 shown in fig. 19. The stop mechanism 4 may include a first stop mechanism 41 and a second stop mechanism 42.

The first stopping mechanism 41 is connected between the connecting base 312 and the sixth swing arm 324, and is used for preventing the connecting base 312 from continuing to rotate towards the inner screen 10 side relative to the sixth swing arm 324 after rotating to a flattened state relative to the sixth swing arm 324.

For example, with continued reference to fig. 26, the first stopping mechanism 41 includes a first circular arc chute 411 and a first slider 412.

Referring to fig. 27, fig. 27 is a schematic cross-sectional view of a connection structure of the connection base 312 and the sixth swing arm 324 of the support lifting assembly 3 shown in fig. 26. The first circular arc chute 411 is disposed on the connecting base 312. The first circular arc chute 411 includes a third end 411a and a fourth end 411b opposite to each other. Alternatively, the third end 411a penetrates a surface of the connection base 312 facing the support portion 311 (shown in fig. 18) to facilitate assembly of the first slider 412. From the third end portion 411a to the fourth end portion 411b, the first circular arc chute 411 extends away from the supporting portion 311.

Based on this, the rotation axis of the connection base 312 with respect to the sixth swing arm 324 is defined as a first rotation axis O1. The first circular arc chute 411 is located at one side of the first rotation axis O1 away from the sixth swing arm 324, and a circular axis corresponding to the first circular arc chute 411 is collinear with the first rotation axis O1. Referring to fig. 27 and 28 in combination, fig. 28 is a perspective view of the connection seat 312 in the supporting and lifting assembly 3 shown in fig. 27, and an inner wall surface of the fourth end 411b away from the third end 411a is a second inner wall surface 411c.

On the basis of the above, referring to fig. 27 and 29 in combination, fig. 29 is a perspective view of the sixth swing arm 324 of the supporting and lifting assembly 3 shown in fig. 27, and the first sliding member 412 is disposed on the sixth swing arm 324.

Referring to fig. 27, the first slider 412 is located at the fourth end 411b and contacts the second inner wall 411 c.

Thus, the first slider 412 is stopped by the second inner wall 411c to prevent the connection base 312 from continuing to rotate toward the inner screen 10 with respect to the sixth swing arm 324 after being in the flattened state with respect to the sixth swing arm 324. The structure is simple and the cost is low.

During the tilting of the third supporting member 31 into the first space C1, the first sliding member 412 slides along the first circular arc chute 411 from the fourth end 411b to the third end 411 a.

Referring back to fig. 26, the second stopping mechanism 42 is connected between the sixth swing arm 324 and the third bracket 322. The second stop mechanism 42 may have the same structural form as the first stop mechanism 41.

Specifically, with continued reference to fig. 26, the second stopping mechanism 42 includes a second circular arc chute 421 and a second sliding member 422.

The second circular arc chute 421 is disposed on the third bracket 322. Referring to fig. 27, the second circular arc chute 421 includes a fifth end 421a and a sixth end 421b opposite to each other. Optionally, the fifth end 421a extends through the fifth supporting surface M5 of the third bracket 322 to facilitate assembling the second slider 422. The second circular arc chute 421 extends from the fifth end 421a to the sixth end 421b toward the second back surface N2 (shown in fig. 3), that is, the second circular arc chute 421 extends from the fifth end 421a to the sixth end 421b in a direction away from the inner screen 10.

Based on this, the rotation axis of the sixth swing arm 324 with respect to the third bracket 322 is defined as the second rotation axis O2. The second circular arc chute 421 is located at one side of the second rotation axis O2 away from the sixth swing arm 324, and the circular axis corresponding to the second circular arc chute 421 is collinear with the second rotation axis O2. The inner wall surface of the sixth end portion 421b away from the fifth end portion 421a is a third inner wall surface 421c.

With continued reference to fig. 27, the second slider 422 is disposed on the sixth swing arm 324, and the second slider 422 is disposed at the sixth end 421b and contacts the third inner wall 421c.

Thus, the second slider 422 can be stopped by the third inner wall surface 421c to prevent the sixth swing arm 324 from continuing to rotate toward the inner screen 10 side with respect to the third bracket 322 after being in the flattened state with respect to the third bracket 322. The structure is simple and the cost is low.

During the tilting of the third supporting member 31 into the first space C1, the sixth swing arm 324 rotates relative to the third bracket 322, and the second slider 422 slides along the second circular arc chute 421 from the sixth end 421b to the fifth end 421 a.

The elastic mechanism is described below.

Referring to fig. 20 and 26 in combination, the elastic mechanism includes a second elastic member 51 and an elastic rod 52.

Referring to fig. 26, the second elastic member 51 is connected between the connecting base 312 and the sixth swing arm 324, and is used for applying an elastic force to the connecting base 312, and the elastic force prevents the connecting base 312 from rotating relative to the sixth swing arm 324.

The second elastic member 51 includes, but is not limited to, a torsion spring, a cylindrical coil spring, a tower spring, a disc spring or a rubber band, and the present application is exemplified by using the second elastic member 51 as a torsion spring. The torsion spring occupies a small space, which is beneficial to reducing the volume of the hinge mechanism 203.

Specifically, referring to fig. 30, fig. 30 is a schematic cross-sectional view of the connection structure of the connection base 312 and the sixth swing arm 324 in the support lifting assembly 3 shown in fig. 26 at the second elastic member 51. The connection holder 312 is provided with a fixed shaft 3121, and a central axis of the fixed shaft 3121 is collinear with the first rotation axis O1. Based on this, the second elastic member 51 includes a spiral body 511, and first and second torsion arms 512 and 513 connected to opposite ends of the spiral body 511, respectively. The screw body 511 is sleeved on the fixing shaft 3121, the first torsion arm 512 is fixed to the connection base 312, and the second torsion arm 513 is fixed to the sixth swing arm 324. Alternatively, the first torsion arm 512 and the connecting base 312, and the second torsion arm 513 and the sixth swing arm 324 may be welded and fixed.

In this way, by means of the second elastic member 51 cooperating with the first stopping mechanism 41, the relative position of the connecting seat 312 and the sixth swing arm 324 in the folded state can be maintained, and the connecting seat 312 is prevented from rotating relative to the sixth swing arm 324. This simple structure can carry out stable support to interior screen 10.

In the process of tilting the third supporting member 31 into the first space C1, the fifth swing arm 323 overcomes the elastic force of the second elastic member 51, and drives the connecting seat 312 to rotate relative to the sixth swing arm 324, so as to tilt the third supporting member 31.

Referring back to fig. 20, one end of the elastic rod 52 is rotatably connected to the second bracket 321, and the other end is rotatably connected to the connecting seat 312. The elastic rod 52 is used to apply an elastic force to the connection base 312 away from the second bracket 321.

The elastic rod 52 has a rod-like structure with elastic expansion capability from one end to the other end. Specifically, the elastic rod 52 may include a first rod segment and a second rod segment, where the first rod segment and the second rod segment are sleeved in a matching manner, and can slide relatively to achieve telescoping. On the basis, an elastic piece is also connected between the first pole section and the second pole section, and the elastic piece comprises but is not limited to a cylindrical spiral spring, a torsion spring, a tower spring or a disc spring and the like. When the first pole section and the second pole section slide relatively to shorten the whole length, the elastic piece deforms to generate the elastic force. The structure is simple and the cost is low.

In this way, by engaging the second elastic member 51 with the first stopper mechanism 41, the relative positions of the connecting base 312 and the sixth swing arm 324 are maintained in the flattened position, and the elastic lever 52 can maintain the relative positions of the sixth swing arm 324 and the third bracket 322 in the flattened position, whereby the relative positions of the connecting base 312, the sixth swing arm 324 and the third bracket 322 can be maintained in the flattened position, and the inner screen 10 can be supported with high strength.

In the process of tilting the third supporting member 31 into the first space C1, the fifth swing arm 323 needs to overcome the elastic force of the second elastic member 51, and also needs to overcome the elastic force of the elastic rod 52 to drive the connecting seat 312 to rotate relative to the sixth swing arm 324, and the sixth swing arm 324 rotates relative to the third bracket 322, so as to tilt the third supporting member 31.

The cam mechanism 6 is described below.

Referring back to fig. 23, the cam mechanism 6 includes a first cam 61, a second cam 62, and a third elastic member 63.

The fifth swing arm 323 can drive the first cam 61 to rotate synchronously when rotating relative to the second bracket 321.

To achieve the above objective, with continued reference to fig. 23, the cam mechanism 6 further includes a second connecting shaft 64. The second connecting shaft 64 is coaxially disposed with and fixedly connected to the second transmission gear 3253. The cross-sectional shape of the second connecting shaft 64 is non-circular, specifically, the cross-sectional shape of the second connecting shaft 64 may be a long strip, and the long strip profile includes a first circular arc line, a second circular arc line, a first straight line and a second straight line, where the first circular arc line is opposite to the second circular arc line and the center line is collinear, the first straight line is connected between one end of the first circular arc line and one end of the second circular arc line, and the second straight line is connected between the other end of the first circular arc line and the other end of the second circular arc line.

In other embodiments, the cross-sectional shape of the second connecting shaft 64 may be elliptical, triangular, rectangular, polygonal, etc., which is not particularly limited in the present application.

On the basis of the above, the first cam 61 is provided with a second connecting hole (not shown in the figure), the shape of which is adapted to the cross-sectional shape of the second connecting shaft 64, and the first cam 61 is fitted over the second connecting shaft 64 via the second connecting hole.

Therefore, when the second transmission gear 3253 rotates, the fifth swing arm 323 is driven to synchronously rotate, and meanwhile, the first cam 61 is driven to synchronously rotate by the second connecting shaft 64, so that the first cam 61 synchronously rotates along with the fifth swing arm 323. The structure is simple and the layout is reasonable.

The first cam 61 includes a first cam surface 611, and the first cam surface 611 includes at least one first convex area and at least one first concave area alternately arranged in order along a first circular locus, a circular center line of which is collinear with a rotation axis of the fifth swing arm 323 with respect to the second bracket 321.

The second cam 62 is located on the side facing the first cam surface 611, and the second cam 62 has a second cam surface 621, the second cam surface 621 faces the first cam surface 611, and the second cam surface 621 includes at least one second convex area and at least one second concave area alternately arranged in order along a second circular locus, the circular axis of which is collinear with the center line of the first circular locus.

The at least one first convex region is in contact with the at least one second concave region, respectively, and the at least one first concave region is in contact with the at least one second convex region, respectively.

The third elastic member 63 is connected to the second cam 62 for applying an elastic force directed to the first cam 61 to the second cam 62. The third elastic member 63 may be a cylindrical coil spring, a torsion spring, a tower spring, a disc spring, or the like, and the present embodiment is exemplified by using the third elastic member 63 as a cylindrical coil spring.

In this way, by means of the third elastic member 63, it is possible to bring at least one first convex region into close contact with at least one second concave region, respectively, while bringing at least one first concave region into close contact with at least one second convex region, respectively, preventing the first cam 61 from rotating relative to the second cam 62, thereby preventing the fifth swing arm 323 from rotating relative to the second bracket 321, and keeping the third support member 31 and the fourth support member 33 in the flattened position.

On the basis of the above, the fifth swing arm 323 can overcome the elastic force of the third elastic member 63 to rotate the first cam 61 with respect to the second cam 62 during the swing to the connecting portion 12b with respect to the second bracket 321.

When the third support 31 is inclined into the first space C1, the at least one first convex region may be respectively in contact with the at least one second concave region, while the at least one first concave region may be respectively in contact with the at least one second convex region. In this way, the position of the third support member 31 can also be maintained in the inclined position by the elastic force of the third elastic member 63, and structural stability of the hinge mechanism 203 in the folded state can be ensured.

On the basis of the above, the second cam 62 is optionally also slidable along the second connecting shaft 64. Specifically, the second cam 62 is provided with a first circular hole, and the second cam 62 is sleeved on the second connecting shaft 64 through the first circular hole. Thus, the second cam 62 is slidable along the second connecting shaft 64, and when the second connecting shaft 64 rotates, the second cam 62 may not rotate with the second connecting shaft 64.

Alternatively, the cam mechanism 6 may further include a stopper shaft 65 and a stopper 66 on the basis of the above-described embodiment. The limiting shaft 65 is disposed parallel to the second connecting shaft 64, and the limiting shaft 65 is rotatably or fixedly connected to the second bracket 321. In some embodiments, the limiting shaft 65 is rotatably connected to the second bracket 321, specifically, the limiting shaft 65 may be coaxially disposed and fixedly connected with one second intermediate gear 3255, and in other embodiments, the limiting shaft 65 may be independent from the second intermediate gear 3255.

The stopper 66 is provided with a second circular hole and a third connecting hole. The limiting piece 66 is sleeved on the second connecting shaft 64 by means of a second round hole, a part of limiting piece where the second round hole is located between the second cam 62 and the third elastic piece 63, and the second cam 62 is fixed to the part of limiting piece. The limiting member 66 is sleeved on the limiting shaft 65 through a third connecting hole, and can slide along the limiting shaft 65. The third connecting hole may be a circular hole or a non-circular hole, and the present application is exemplified by using the third connecting hole as a circular hole, so long as the stopper 66 is allowed to slide along the stopper shaft 65 by means of the third connecting hole, which is not considered as a particular limitation of the present application.

In this way, the second cam 62 is allowed to slide along the second connecting shaft 64 by the stopper 66, and the second cam 62 is prevented from rotating relative to the second connecting shaft 64. The structure is simple, and the stability is better.

Referring to fig. 31, fig. 31 is a perspective view of the support lift assembly 3 shown in fig. 19 in a folded state. In this state, the third support 31 is inclined into the first space C1.

The above embodiments describe the structure of the folding screen apparatus 100 provided in the embodiments of the present application, and specifically describe the specific structure of the hinge mechanism 203 in the folding screen apparatus 100. Referring to fig. 32, fig. 32 is a space contrast diagram of Rong Bing of the internal hinge mechanism 203 in the unfolded state and the folded state of the folding screen apparatus 100 according to the embodiment of the present application. As shown in fig. 32, the Rong Bing space of the hinge mechanism 203 is 20.5mm in the unfolded state, and the Rong Bing space of the hinge mechanism 203 is 21.4995mm in the folded state. As can be seen from this, when the folding screen apparatus 100 is folded from the unfolded state to the folded state, the space Rong Bing increases, and the hinge mechanism 203 can be prevented from pressing the inner screen 10.

In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hinge mechanism, comprising:

a first support;

the first support piece is positioned at a first position and is borne by the bearing part, and the surface of the first support piece, which is opposite to the bearing part, is a first support surface; the supporting main body is provided with a second supporting surface which is coplanar with the first supporting surface and faces the same direction, and the connecting part is positioned between the supporting main body and the bearing part and is fixedly connected with the supporting main body and the bearing part;

A first transmission assembly connected between the first support and the connection portion, the first transmission assembly allowing the first support to be flipped from the first position to the second position toward the support body;

when the first supporting piece is in the second position, at least part of the first supporting piece is arranged on the supporting main body in a stacked mode, and the first supporting surface faces the second supporting surface.

2. The hinge mechanism of claim 1, wherein the first transmission assembly comprises:

the first bracket is fixed on the connecting part;

the first swing arm and the second swing arm, the one end of first swing arm with the one end rotatable coupling of second swing arm in first support, the other end of first swing arm with the other end rotatable coupling of second swing arm in first support, first support first swing arm second swing arm with first support forms hinge four-bar linkage.

3. The hinge mechanism according to claim 2, wherein,

the rotating shafts of the first swing arm and the first support are first rotating shafts, the rotating shafts of the first swing arm and the first support are second rotating shafts, the rotating shafts of the second swing arm and the first support are third rotating shafts, and the rotating shafts of the second swing arm and the first support are fourth rotating shafts;

The distance from the first rotating shaft to the third rotating shaft is a first distance, the distance from the first rotating shaft to the second rotating shaft is a second distance, the distance from the second rotating shaft to the fourth rotating shaft is a third distance, and the distance from the third rotating shaft to the fourth rotating shaft is a fourth distance; the sum of the first distance and the second distance is greater than the sum of the third distance and the fourth distance.

4. A hinge mechanism according to claim 3, wherein the first support is provided with a first runner comprising opposed first and second ends, from which the first runner extends away from the second axis of rotation, and an inner wall surface of the first end remote from the second end is a first inner wall surface;

the fourth rotating shaft is fixedly connected with the second swing arm, is accommodated in the first end part and can rotate in the first end part;

the first transmission assembly further includes:

the first elastic piece is connected with the fourth rotating shaft and used for applying elastic force pointing to the first inner wall surface to the fourth rotating shaft.

5. The hinge mechanism according to any one of claims 2 to 4, wherein a receiving groove is provided between the bearing portion and the support main;

the connecting part comprises a first surface, the first surface and the second supporting surface face the same direction, and the accommodating groove is positioned on one side of the first surface facing the second supporting surface; at least the first bracket in the first transmission assembly is accommodated in the accommodating groove.

6. The hinge mechanism according to claim 5, wherein a side of the bearing portion facing the support main is a first side, a side of the support main facing the bearing portion is a second side, and the first side and the second side form opposite inner wall surfaces of the accommodating groove;

the distance from the first bracket to the first side surface is smaller than the distance from the first bracket to the second side surface, and a part of space between the first bracket and the second side surface of the accommodating groove is a first space;

when the first supporting piece is located at the second position, one part of the first supporting piece is arranged on the supporting main body in a stacked mode, and the other part of the first supporting piece covers an opening of one end, far away from the connecting portion, of the first space.

7. The hinge mechanism according to claim 6, wherein a portion of the space of the receiving groove between the first side surface and the first bracket is a second space;

the hinge mechanism further includes:

a shaft cover located within the second space;

the second transmission assembly is connected between the first transmission assembly and the shaft cover, and when the first supporting piece is turned from the first position to the second position from the supporting main body, the first transmission assembly drives the second transmission assembly to move so as to drive the shaft cover to rotate to a third position away from the connecting part;

when the shaft cover is in the third position, the shaft cover covers an opening of one end of the second space far away from the connecting part and one side of the first bracket far away from the connecting part.

8. The hinge mechanism of claim 7, wherein the second transmission assembly comprises:

the first support, the third swing arm, the fourth swing arm and the shaft cover form a hinge four-bar mechanism;

The first transmission structure is connected between the first swing arm and the third swing arm, and when the first swing arm rotates relative to the first bracket, the first swing arm can drive the third swing arm to rotate in the same direction relative to the first bracket by virtue of the first transmission structure.

9. The hinge mechanism of claim 8, wherein the first transmission structure comprises:

the axis of the first gear is collinear with the rotation axis of the first swing arm relative to the first bracket, and the first swing arm can drive the first gear to synchronously rotate when rotating relative to the first bracket;

the axis of the second gear is collinear with the rotation axis of the third swing arm relative to the first bracket, and the second gear can drive the third swing arm to synchronously rotate relative to the first bracket when rotating;

the gear shaft is rotatably connected to the first bracket, and comprises a third gear and a fourth gear which are coaxially arranged and fixedly connected, the third gear is meshed with the first gear, and the fourth gear is meshed with the second gear.

10. The hinge mechanism of claim 6, further comprising:

the third support piece is positioned at one end of the first space, which is far away from the connecting part, and is provided with a third support surface which is coplanar with and faces the first support surface and the second support surface, one end of the third support surface facing the first support surface is a first end, and one end of the third support surface facing the second support surface is a second end;

a third drive assembly connected between the third support and the first drive assembly; when the first supporting piece is turned from the first position to the second position, the first transmission assembly further drives the third transmission assembly to move so as to drive the first end of the third supporting piece to incline into the first space relative to the second end.

11. The hinge mechanism of claim 10, wherein the third support comprises a body;

the third transmission assembly includes:

the second bracket is positioned in the first space and is fixedly connected to the connecting part;

The third bracket is fixedly connected to the support main body;

one end of the fifth swing arm is rotatably connected with the second bracket, one end of the sixth swing arm is rotatably connected with the third bracket, the other end of the fifth swing arm and the other end of the sixth swing arm are rotatably connected with the body, and the second bracket, the third bracket, the fifth swing arm, the sixth swing arm and the body form a hinge four-bar mechanism;

the second transmission structure is connected between the second swing arm and the fifth swing arm, and when the second swing arm rotates relative to the first bracket, the second transmission structure can drive the fifth swing arm to rotate in opposite directions relative to the second bracket.

12. The hinge mechanism of claim 10, wherein the third support comprises a body and a slide;

the body is provided with a sliding rail which extends along the direction that the first end points to the second end;

the sliding part is connected with the sliding rail in a sliding way;

the third transmission assembly includes:

The third bracket is fixedly connected to the support main body;

one end of the fifth swing arm is rotatably connected with the second bracket, and the other end of the fifth swing arm is rotatably connected with the sliding part;

one end of the sixth swing arm is rotatably connected with the third bracket, and the other end of the sixth swing arm is rotatably connected with the body;

13. The hinge mechanism of claim 12, wherein the body comprises:

a support portion on which the third support surface is located;

the connecting seat is positioned on one side of the supporting part, which is opposite to the third supporting surface, and is fixedly connected with the supporting part, the other end of the sixth swing arm is rotatably connected with the connecting seat, and the sliding rail is arranged on the connecting seat.

14. The hinge mechanism of claim 13, further comprising:

The fourth supporting piece is located between the third supporting piece and the supporting main body, the fourth supporting piece is fixedly connected to the sixth swing arm, the surface, facing away from the sixth swing arm, of the fourth supporting piece is a fourth supporting surface, and the fourth supporting surface, the third supporting surface and the second supporting surface are coplanar and face the same direction.

15. The hinge mechanism of claim 13, wherein the connection base is provided with a first circular arc chute including opposite third and fourth ends, the first circular arc chute extending away from the support from the third to fourth ends;

the connecting seat is a first rotation axis relative to the rotation axis of the sixth swing arm, the first circular arc chute is positioned on one side of the first rotation axis, which is far away from the sixth swing arm, the circle center line corresponding to the first circular arc chute is collinear with the first rotation axis, and the inner wall surface of the fourth end part, which is far away from the third end part, is a second inner wall surface;

the sixth swing arm is provided with a first sliding piece, and the first sliding piece is located at the fourth end portion and is in contact with the second inner wall surface.

16. The hinge mechanism of claim 13, wherein a surface of the support body facing away from the second support surface is a second back surface;

the third bracket is provided with a second circular arc chute, the second circular arc chute comprises a fifth end part and a sixth end part which are opposite, and the second circular arc chute extends towards the second back surface from the fifth end part to the sixth end part;

the sixth swing arm is a second rotation axis relative to the rotation axis of the third bracket, the second circular arc chute is positioned on one side of the second rotation axis, which is far away from the sixth swing arm, the circle center line corresponding to the second circular arc chute is collinear with the second rotation axis, and the inner wall surface of the sixth end part, which is far away from the fifth end part, is a third inner wall surface;

the sixth swing arm is provided with a second sliding piece, and the second sliding piece is located at the sixth end portion and is in contact with the third inner wall surface.

17. The hinge mechanism of claim 15, wherein a second elastic member is connected between the connection base and the sixth swing arm, the second elastic member being configured to apply an elastic force to the connection base, the elastic force preventing the connection base from rotating relative to the sixth swing arm.

18. The hinge mechanism of claim 17, further comprising:

the elastic rod, the one end rotatable coupling of elastic rod in the second support, the other end rotatable coupling in the connecting seat, the elastic rod is used for to the connecting seat is exerted and is kept away from the elastic force of second support.

19. The hinge mechanism of claim 12, further comprising:

the first cam can drive the first cam to synchronously rotate when the fifth swing arm rotates relative to the second bracket, the first cam is provided with a first cam surface, the first cam surface comprises at least one first convex surface area and at least one first concave surface area which are sequentially and alternately arranged along a first circular track, and the circular line of the first circular track is collinear with the rotation axis of the fifth swing arm relative to the second bracket;

a second cam having a second cam surface facing the first cam surface, the second cam surface including at least one second convex region and at least one second concave region alternately arranged in sequence along a second circular locus, the at least one second concave region being in contact with the at least one first convex region, the at least one second convex region being in contact with the at least one first concave region, respectively, a center line of the second circular locus being collinear with a center line of the first circular locus;

And the third elastic piece is connected with the second cam and is used for applying elastic force directed to the first cam to the second cam.

20. The hinge mechanism of claim 12, wherein the second transmission structure comprises:

the central axis of the first transmission gear is collinear with the rotation axis of the second swing arm relative to the first bracket, and the second swing arm can drive the first transmission gear to synchronously rotate when rotating relative to the first bracket;

the central axis of the second transmission gear is collinear with the rotation axis of the fifth swing arm relative to the second bracket, and the second transmission gear can drive the fifth swing arm to synchronously rotate relative to the second bracket when rotating;

the rack is slidably connected to the second supporting piece along a first direction, is parallel to the second supporting surface and is perpendicular to the central axes of the first transmission gear and the second transmission gear;

the first group of intermediate gears and the second group of intermediate gears are arranged between the first transmission gear and the rack, and the second group of intermediate gears are arranged between the rack and the second transmission gear and are used for enabling the rotation directions of the first transmission gear and the second transmission gear to be opposite.

21. A folding screen apparatus, comprising:

a folding screen comprising a first folding screen portion, a second folding screen portion, and a third folding screen portion connected between the first folding screen portion and the second folding screen portion;

a first housing, the first folding screen portion being disposed on the first housing;

a second housing, the second folding screen portion being disposed on the second housing;

the hinge mechanism of any one of claims 1-20, a second support of the hinge mechanism being coupled to the first housing, the first support of the hinge mechanism being coupled to the second housing, the third folding screen portion being disposed on the hinge mechanism.