Hinge structure and terminal device

Abstract

The application discloses a hinge structure and a terminal device, and belongs to the field of electronic devices. The hinge structure comprises a base, a rotating structure rotatably connected to the base, the rotating structure having a folded state and an unfolded state, a door plate arranged between the base and the rotating structure and rotatably connected to the rotating structure, a surface of the door plate away from the rotating structure being a first surface, an elastic piece connected to the rotating structure and the door plate, the elastic piece being used for pushing the door plate to rotate relative to the rotating structure when the rotating structure is in the folded state, so that the included angle between the first surface and the base is less than a first angle, and a stop piece fixedly connected to the base, the stop piece being used for abutting against the door plate when the rotating structure is in the unfolded state, so as to push the door plate to rotate in a direction in which the included angle between the first surface and the base increases. The hinge structure provided by the application can realize the control of the door plate through one-stage transmission, and the overall structure is simple.

Description

[0001] This application is a divisional application of the original application with the application number 202211585178.8 and the original filing date of December 9, 2022, and the entire contents of the original application are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of electronic devices, in particular to a hinge structure and a terminal device. BACKGROUND

[0003] For electronic devices such as folding screen mobile phones with folding screens, in the folded state, a containing space needs to be formed between the hinge structures, so that the flexible screen of the folding screen mobile phone forms a water drop shape at the folded position to reduce stress concentration and thus alleviate the crease of the flexible screen; in the unfolded state, the surface of the hinge structure and the flexible screen needs to be flat. In the related art, in the folded state, a door plate is usually used to form a containing space; in the unfolded state, the door plate is usually used to form a flat surface; this requires the door plate to rotate by a certain angle in the folded and unfolded states. The hinge structure in the related art usually uses a two-stage or more transmission mode to control the rotation of the door plate, resulting in an overly complex overall structure. SUMMARY

[0004] The present application provides a hinge structure and a terminal device to solve the problem of overly complex overall structure caused by the use of a two-stage or more transmission mode for the door plate of the hinge structure in the prior art.

[0005] The technical solution is as follows:

[0006] The first aspect of the present application provides a hinge structure, comprising:

[0007] a base;

[0008] a rotating structure rotatably connected to the base, the rotating structure having a folded state at a first angle relative to the base and an unfolded state at a second angle relative to the base; the rotating structure forms a first rotation axis;

[0009] a door plate disposed between the base and the rotating structure and rotatably connected to the rotating structure about the first rotation axis; the surface of the door plate facing away from the rotating structure is a first surface;

[0010] an elastic member connected to the rotating structure and the door plate; when the rotating structure is in the folded state, the elastic member is used to push the door plate to rotate relative to the rotating structure, so that the included angle between the first surface and the base is less than the first angle;

[0011] A stopper is fixedly connected to the base, and is used to separate from the door panel when the rotating structure is in the folded state to rotate the door panel in a direction in which an included angle between the first surface and the base decreases, and is used to abut against the door panel when the rotating structure is in the unfolded state to push the door panel to rotate in a direction in which the included angle between the first surface and the base increases.

[0012] Through the above scheme, when the rotating structure is in the folded state, the stopper and the door panel are separated, and under the action of the elastic member, the door panel rotates in a direction in which an included angle between the first surface and the base decreases, so that the door panel is inclined in a direction in which one end close to the base is close to the rotating structure, and when the flexible screen is attached to the door panel, the door panel can drive the flexible screen to be in a water drop shape when the rotating structure is in the folded state, thereby effectively reducing stress concentration of the folding screen and reducing creases of the flexible screen. When the rotating structure is in the unfolded state, the stopper and the door panel are in contact, and the stopper can make the door panel rotate in a direction in which the included angle between the first surface and the base increases, so that the door panel remains flat in the unfolded state to ensure the flatness of the flexible screen in the unfolded state. In summary, the hinge structure provided by the present application can control the door panel through one-stage transmission, and the overall structure is simple.

[0013] In some implementations, the rotating structure, the door panel, the elastic member, and the stopper are all provided as two, one of the rotating structure, one of the door panel, one of the elastic member, and one of the stopper are provided on one side of the base, and the other of the rotating structure, the other of the door panel, the other of the elastic member, and the other of the stopper are provided on the other side of the base.

[0014] When both of the rotating structures are in the folded state, the included angles between the first surfaces of the two door panels and the base are all smaller than the first angle.

[0015] Through the above scheme, the two rotating structures can respectively drive the door panels on both sides of the base to move, and when both of the rotating structures are in the folded state, the two door panels rotate in a direction in which an included angle between the first surface and the base decreases under the action of the respective elastic members, so that the movement directions of the ends close to the base of the two door panels are away from each other, and thus the distance between the ends close to the base of the two door panels is greater than the distance between the ends away from the base of the two door panels, so that a space in a substantially triangular prism shape can be formed to accommodate the bent part of the flexible screen in a water drop shape.

[0016] In some implementations, the first surface is a plane; and when both of the rotating structures are in the unfolded state, the first surfaces of the two door panels are in the same plane.

[0017] With the above scheme, when both of the rotating structures are in the unfolded state, the flexible screen is always kept in the state of being attached to the door panels. Since the first surfaces of the two door panels are in the same plane, the flexible screen can be kept in the state of being in the plane in the unfolded state, which is convenient for the user to use.

[0018] In some implementations, the rotating structure forms a first protrusion extending along the second rotating shaft, and the door panel forms a first opening; the door panel is used to be sleeved on the first protrusion through the first opening to be rotationally connected to the rotating structure.

[0019] With the above scheme, the first protrusion is used to form the rotating shaft, and the door panel is sleeved on the rotating shaft through the first opening to realize the rotational connection between the door panel and the rotating structure, and the above design can facilitate the installation of the elastic member.

[0020] In some implementations, the elastic member is a torsion spring, the torsion spring is located in the first opening, the torsion spring is sleeved on the first protrusion, one end of the torsion spring is fixedly connected to the first protrusion, and the other end of the torsion spring is fixedly connected to the door panel.

[0021] With the above scheme, when the rotating structure is in the unfolded state, the door panel is abutted by the abutting member, and the torsion spring is in the state of being deformed and storing energy. When the rotating structure is in the folded state, the door panel and the abutting member are separated, and under the action of the restoring force of the torsion spring, the door panel rotates towards the direction in which the included angle between the first surface and the base decreases, so as to realize the tilting of the door panel to accommodate the water-drop-shaped bending part on the flexible screen. Since the torsion spring has a simple structure and occupies a small space, it can be directly sleeved on the first protrusion, so as to save the space of the overall structure.

[0022] In some implementations, the door panel forms an avoiding hole; and when the rotating structure is in the folded state, the rotating structure is at least partially located in the avoiding hole.

[0023] With the above scheme, when the door panel rotates towards the direction in which the included angle between the first surface and the base decreases under the action of the torsion spring, the door panel can rotate to a larger tilting angle, so as to form a large enough space between the two door panels to accommodate the water-drop-shaped bending part on the flexible screen.

[0024] In some implementations, the rotating structure comprises:

[0025] a middle frame forming the first rotating shaft;

[0026] The base forms a second rotation shaft, one end of the first rocker is rotationally connected to the base around the second rotation shaft; the first rocker forms a third rotation shaft, the third rotation shaft is parallel to the second rotation shaft, the other end of the first rocker is rotationally connected to the middle frame around the third rotation shaft;

[0027] The base forms a fourth rotation shaft, the fourth rotation shaft is parallel to the second rotation shaft; one end of the second rocker is rotationally connected to the base around the fourth rotation shaft, the other end of the second rocker is slidingly connected to the middle frame.

[0028] Through the above scheme, the first rocker can drive the middle frame to rotate, and the second rocker can control the angle of the middle frame during rotation, so that the middle frame is kept at a predetermined angle.

[0029] In some implementations, when the rotating structure is in the unfolded state, the fourth rotation shaft is between the second rotation shaft and the middle frame.

[0030] Through the above scheme, the second rotation shaft and the fourth rotation shaft are not on the same straight line, the first rocker can drive the middle frame to rotate, and the middle frame rotates around the second rotation shaft, but the angle between the middle frame and the second rocker remains fixed during rotation, so that the distance between the middle frame and the fourth rotation shaft decreases during the process of converting the rotating structure from the folded state to the unfolded state, and the base can be close to the flexible screen to provide support for the flexible screen; during the process of converting the rotating structure from the unfolded state to the folded state, the distance between the middle frame and the fourth rotation shaft increases, and the base can be away from the flexible screen to provide space to accommodate the water drop-shaped bending part on the flexible screen.

[0031] In some implementations, the base forms a first sliding groove, one end of the first rocker close to the base forms a first sliding block, the first sliding groove extends in an arc shape around the second rotation shaft, and the first sliding block is at least partially located in the first sliding groove; the first rocker is slidingly connected to the first sliding groove through the sliding block to be rotationally connected to the base.

[0032] Through the above scheme, the rotation connection between the base and the first rocker is realized by the sliding between the first sliding groove and the first sliding block, and in this way, the volume of the first sliding groove and the first sliding block can be larger to ensure the overall structural strength. Moreover, since the first sliding groove is in an arc shape, the height occupied by the first sliding groove is smaller, and in the case of not affecting the overall structure volume, the overall structural strength can be effectively increased by using this way.

[0033] In some implementations, the first rocker arm further forms a baffle, the baffle has a second surface, the first surface and the second surface are both planes; when the rotating structure is in the unfolded state, the first surface and the second surface are in the same plane.

[0034] Through the above scheme, when the rotating structure is in the unfolded state, not only the door plate can provide support for the flexible screen, but also the baffle can provide support for the flexible screen, effectively reducing the concave-convex feeling generated by pressing the folding part after the flexible screen is unfolded, and making the flexible screen more flat.

[0035] In some implementations, the base has a shaft body, the shaft body extends along the fourth rotation shaft, and the second rocker arm forms a second opening; the second rocker arm is sleeved on the shaft body through the second opening to be rotationally connected to the base.

[0036] Through the above scheme, the shaft body forms a rotation shaft, and the second rocker arm is sleeved on the shaft body through the second opening to realize the rotational connection between the second rocker arm and the base. Since the strength support is provided by the connection between the first rocker arm and the base, the connection between the second rocker arm and the base only needs small structural strength, so that the shaft body can be set to a small structure, so as to not affect the volume of the overall structure.

[0037] The first rocker arm forms a second protrusion, the second protrusion extends along the third rotation shaft, and the middle frame forms a third opening; the middle frame is sleeved on the second protrusion through the third opening to be rotationally connected to the first rocker arm.

[0038] Through the above scheme, the second protrusion forms a rotation shaft, and the middle frame is sleeved on the rotation shaft through the third opening to realize the rotational connection between the middle frame and the first rocker arm.

[0039] The middle frame forms a second sliding groove, one end of the second rocker arm away from the base forms a second sliding block, the second sliding block is at least partially located in the second sliding groove, and the second sliding block and the second sliding groove are in clearance fit or transition fit.

[0040] Through the above scheme, the second sliding groove and the second sliding block can realize the sliding connection between the second rocker arm and the middle frame, so that the included angle between the middle frame and the second rocker arm is kept fixed.

[0041] In some implementations, the rotating structure comprises:

[0042] a middle frame forming the first rotation shaft;

[0043] a first rocker arm, the base forms a second rotation shaft, one end of the first rocker arm is rotationally connected to the base around the second rotation shaft, and the other end of the first rocker arm is fixedly connected to the middle frame.

[0044] The above solution can further simplify the structure. With the middle frame and the first rocker arm fixedly connected, only the first rocker arm is needed to drive the middle frame to rotate.

[0045] A second aspect of this application provides a terminal device including the hinge structure described above.

[0046] The above solution allows for the implementation of a foldable screen using a simple hinge structure, which simplifies the overall structure. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the terminal device provided in the embodiments of this application in a folded state;

[0048] Figure 2 This is a schematic diagram of the terminal device provided in the embodiments of this application in its unfolded state;

[0049] Figure 3 This is a perspective view of the hinge structure in an embodiment of this application;

[0050] Figure 4 This is a front view of the hinge structure in an embodiment of this application;

[0051] Figure 5 This is a perspective view of the rotating structure in the folded state in the embodiments of this application;

[0052] Figure 6 This is a front view of the rotating structure in the folded state in the embodiment of this application;

[0053] Figure 7 This is a perspective view of the rotating structure in the unfolded state in the embodiment of this application;

[0054] Figure 8 This is a front view of the rotating structure in the unfolded state in the embodiment of this application;

[0055] Figure 9 This is a front view of the embodiment of this application with both rotating structures in a folded state;

[0056] Figure 10 This is a front view of the embodiment of this application with both rotating structures in the unfolded state;

[0057] Figure 11 This is a schematic diagram of the connection between the door panel and the middle frame in an embodiment of this application;

[0058] Figure 12 This is a perspective view of the rotating structure in the embodiment of this application;

[0059] Figure 13 This is a perspective view of the middle frame in the embodiments of this application;

[0060] Figure 14 is a perspective view of a first rocker arm in an embodiment of the present application;

[0061] Figure 15 is a perspective view of a second rocker arm in an embodiment of the present application.

[0062] In the drawings, the same or similar reference signs represent the same or similar components.

[0063] 100, terminal device; 110, flexible screen; 200, hinge structure; 210, base; 211, first sliding groove; 212, shaft body; 220, rotating structure; 221, first protrusion; 222, middle frame; 223, first rocker arm; 224, second rocker arm; 225, second sliding groove; 226, third opening; 227, second protrusion; 228, first sliding block; 229, baffle; 230, second surface; 231, second sliding block; 232, second opening; 240, door plate; 241, first surface; 242, first opening; 243, avoiding hole; 250, elastic member; 260, abutting member. DETAILED DESCRIPTION

[0064] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0065] It should be understood that the “multiple” mentioned in the present application refers to two or more. In the description of the present application, unless otherwise specified, “ / ” represents the meaning of or, for example, A / B can represent A or B; “and / or” in the present application only represents a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. In addition, in order to clearly describe the technical solutions of the present application, the same items or similar items with basically the same functions and effects are distinguished by using “first”, “second”, etc. The skilled in the art can understand that “first”, “second”, etc. do not limit the quantity and execution order, and “first”, “second”, etc. also do not limit the difference.

[0066] With the development of flexible screen technology, more and more terminal devices use folding screens. For folding screen mobile phones, folding screen tablets, folding screen notebooks and other terminal devices with folding screens, the hinge structure is crucial. The hinge structure not only needs to drive the folding and unfolding of the flexible screen, but also needs to provide enough space to accommodate the bending part of the flexible screen when the flexible screen is in a folded state. In the related art, a door plate is usually installed on the hinge structure. The door plate is used to support the flexible screen in an unfolded state and form a triangular prism space in a folded state to accommodate the water drop-shaped folding part of the flexible screen. Therefore, during the rotation of the middle frame, the rotation of the door plate is not synchronized with the rotation of the middle frame. Therefore, the rotation of the door plate needs to be controlled during the rotation of the middle frame to achieve the above effect. In the related art, a two-stage or more transmission mode is usually used to control the rotation of the door plate. This results in a complex overall structure and a low yield of products.

[0067] As shown in Figure 1 and Figure 2 , the embodiment of the present application provides a terminal device 100, which comprises a flexible screen 110 and a hinge structure 200. The flexible screen 110 is connected to the hinge structure 200 to be folded or unfolded under the driving of the hinge structure 200.

[0068] As shown in Figure 3 and Figure 4 , the embodiment of the present application provides a hinge structure 200 for terminal devices 100 with folding screens, such as folding screen mobile phones, folding screen tablets, folding screen notebooks and the like. The hinge structure 200 comprises a base 210, a rotating structure 220, a door plate 240, an elastic member 250 and a stopper 260.

[0069] The base 210 is located between the two middle frames 222 of the terminal device 100 with a folding screen. During the bending of the flexible screen 110 in the terminal device 100 with a folding screen, the part of the flexible screen 110 located at the base 210 will be folded, while the part of the flexible screen 110 located at the middle frame 222 will still remain flat. Generally, the width of the base 210 determines the thickness of the terminal device 100 in the folded state. Therefore, the base 210 is generally in the form of a long strip-shaped plate structure. Of course, in order to adapt to various terminal devices 100 with different shapes, the base 210 can also be provided in other shapes. In the present application, the specific shape of the base 210 is not limited.

[0070] The rotating structure 220 is rotatably connected to the base 210. Specifically, the rotating structure 220 can be rotatably connected to the base 210 in a hinged manner, rotatably connected to the base 210 in a sliding manner along an arc, or rotatably connected to the base 210 in other manners. The rotating structure 220 has a certain rotation range relative to the base 210. Specifically, the rotation range can be a first angle between the rotating structure 220 and the base 210 to a second angle between the rotating structure 220 and the base 210. The first angle can be a right angle, and the second angle can be a flat angle. Of course, according to the specific needs of the terminal device 100, the first angle and the second angle can also be other angles to adapt to different terminal devices 100. For the sake of convenience, the first angle is taken as a right angle and the second angle is taken as a flat angle in this application. In the case of the first angle between the rotating structure 220 and the base 210, the rotating structure 220 is in a folded state (as shown in Figure 5 and Figure 6 In the case of the second angle between the rotating structure 220 and the base 210, the rotating structure 220 is in an unfolded state (as shown in Figure 7 and Figure 8 ).

[0071] The door plate 240 is disposed between the base 210 and the rotating structure 220. Specifically, the door plate 240 is disposed between the base 210 and the rotating structure 220 means that most of the structure of the door plate 240 is in the region between the base 210 and the rotating structure 220, and in some states, the door plate 240 can also have some regions located in the position where the base 210 or the rotating structure 220 coincides, and can also have some regions extending out of the base 210 or the rotating structure 220. The door plate 240 is rotationally connected to the rotating structure 220. Specifically, a first rotation shaft is formed on the rotating structure 220, and the door plate 240 is rotationally connected to the rotating structure 220 around the first rotation shaft. Specifically, the first rotation shaft can be located in a solid structure, for example, the first rotation shaft can be located on the axis of a cylindrical solid structure; the first rotation shaft can also be located in a virtual structure, for example, the first rotation shaft can be located on the axis of a cylindrical hole. The door plate 240 has a first surface 241, which is the surface of the door plate 240 facing away from the rotating structure 220. Specifically, the first surface 241 is used to support the flexible screen 110 when the rotating structure 220 is in the unfolded state, and the first surface 241 is also used to form a side wall of the accommodation space for accommodating the folded part of the flexible screen 110 when the rotating structure 220 is in the folded state. Specifically, the door plate 240 can be a plate structure, that is, the thickness of the door plate 240 is much smaller than the length of the door plate 240 and the width of the door plate 240, in which case the surface with a larger area on the door plate 240 can form the first surface 241, and due to the small thickness, the space can be effectively saved. Of course, according to the needs of the terminal device 100, the door plate 240 can also be provided in other shapes to adapt to different terminal devices 100. Specifically, the first surface 241 can be a plane, in which case when the rotating structure 220 is in the unfolded state, the first surface 241 can provide a flat support for the flexible screen 110, which is conducive to maintaining the flatness of the flexible screen 110. Of course, according to the needs of the terminal device 100, the first surface 241 can also be a curved surface to meet different forms of terminal devices 100. The door plate 240 has a first end and a second end, wherein the first end is the end of the door plate 240 close to the base 210, and the second end is the end of the door plate 240 away from the base 210.

[0072] In the present application, the door plate 240 and the rotating structure 220 rotate in a plane, and the rotating structure 220 and the base 210 also rotate in the rotating plane, that is, the rotating axis of the door plate 240 relative to the rotating structure 220 and the rotating axis of the rotating structure 220 relative to the base 210 are parallel, in this case, when the rotating structure 220 is in the folded state, the door plate 240 can form a front-rear consistent accommodating space to accommodate the folded part of the flexible screen 110. Of course, according to the specific needs of the terminal device 100, the rotating axis of the door plate 240 and the rotating structure 220 can also be not parallel to the rotating axis of the rotating structure 220 and the base 210 to meet different terminal devices 100.

[0073] The elastic member 250 is connected to the rotating structure 220 and the door plate 240. Specifically, the elastic member 250 can be fixedly connected to the rotating structure 220 and the door plate 240 to push the relative movement of the rotating structure 220 and the door plate 240, for example, the elastic member 250 can be fixedly connected to the rotating structure 220 and the door plate 240 by abutting, or can be fixedly connected to the rotating structure 220 and the door plate 240 by bonding, clamping or the like. In the present application, how the elastic member 250 is connected to the rotating structure 220 and the door plate 240 is not limited. In the folded state of the rotating structure 220, the elastic member 250 is used to push the door plate 240 to rotate relative to the rotating structure 220, that is, the elastic member 250 is used to push the first end of the door plate 240 to move towards the direction close to the rotating structure 220, so that the first surface 241 and the base 210 form an angle smaller than the first angle, that is, the angle between the first surface 241 and the base 210 is smaller than the minimum angle between the rotating structure 220 and the base 210. In the case of the first angle being a right angle, the angle between the first surface 241 and the base 210 can be an acute angle.

[0074] The abutting member 260 is fixedly connected to the base 210. Specifically, the abutting member 260 can be fixedly connected to the base 210 by means of bonding, welding or the like to ensure the connection strength of the two; the abutting member 260 can also be fixedly connected to the base 210 by means of screws, buckles or the like to facilitate disassembly; in the specific embodiments of the present application, the abutting member 260 and the base 210 are integrally formed, which not only ensures the connection strength of the two but also facilitates manufacturing and saves internal space. When the rotating structure 220 is in the folded state, the abutting member 260 is separated from the door plate 240, i.e. in this case, the abutting member 260 and the door plate 240 do not directly contact, so that the abutting member 260 does not prevent the door plate 240 from rotating towards a direction in which the included angle between the first surface 241 and the base 210 decreases, i.e. the abutting member 260 opens the door plate 240 to rotate towards a direction in which the included angle between the first surface 241 and the base 210 decreases. In the process of changing the rotating structure 220 from the folded state to the unfolded state, the abutting member 260 abuts against the door plate 240, i.e. in this case, the abutting member 260 and the door plate 240 directly contact, and the abutting member 260 can prevent the door plate 240 from rotating towards a direction in which the included angle between the first surface 241 and the base 210 decreases. When the rotating structure 220 is in the unfolded state, the abutting member 260 abuts against the door plate 240, i.e. in this case, the abutting member 260 and the door plate 240 continuously contact, and the abutting member 260 can push the door plate 240 to rotate towards a direction in which the included angle between the first surface 241 and the base 210 increases. Specifically, in the unfolded state, the included angle between the door plate 240 and the base 210 can be a second angle, i.e. the included angle between the door plate 240 and the base 210 is consistent with the included angle between the rotating structure 220 and the base 210, in which case it is beneficial to maintain the flatness of the flexible screen 110.

[0075] Through the above scheme, when the rotating structure 220 is in the folded state, the abutting member 260 and the door plate 240 are separated, and under the action of the elastic member 250, the door plate 240 will rotate towards a direction in which the included angle between the first surface 241 and the base 210 decreases, so that at this time the door plate 240 will be inclined in a direction in which one end close to the base 210 is close to the rotating structure 220, and in the case where the flexible screen 110 is attached to the door plate 240, the door plate 240 can drive the flexible screen 110 to be in a water drop shape when the rotating structure 220 is in the folded state, thereby effectively reducing the stress concentration of the folding screen and thereby reducing the creases of the flexible screen 110; when the rotating structure 220 is in the unfolded state, the abutting member 260 and the door plate 240 are in contact, and the abutting member 260 can make the door plate 240 rotate towards a direction in which the included angle between the first surface 241 and the base 210 increases, so that the door plate 240 remains flat in the unfolded state to ensure the flatness of the flexible screen 110 in the unfolded state. In summary, the hinge structure 200 provided by the present application can control the door plate 240 through one-stage transmission, and the overall structure is simple.

[0076] like Figure 3 and Figure 4 As shown, in some embodiments of this application, the rotating structure 220, the door panel 240, the elastic element 250, and the abutting element 260 are all provided in pairs. One of the rotating structure 220, one of the door panel 240, one of the elastic element 250, and one of the abutting element 260 are all disposed on one side of the base 210 (e.g., Figure 1 (Left side of the base 210); another of the rotating structure 220, another of the door panel 240, another of the elastic member 250, and another of the abutting member 260 are all located on the other side of the base 210 (e.g., the left side of the base 210); Figure 1 (Right side of the image). When both rotating structures 220 are in the folded state (e.g., on the right side). Figure 9 As shown), the included angles between the first surfaces 241 of the two door panels 240 and the base 210 are both smaller than the first angle. Specifically, the ends of the two door panels 240 closest to the base 210 are inclined towards the sides of the base 210, and the ends of the two door panels 240 furthest from the base 210 are inclined towards the center of the base 210. Therefore, the two first surfaces 241 and the base 210 together form a triangular prism-shaped receiving space, which can be used to accommodate the teardrop-shaped folded portion on the flexible screen 110. When both rotating structures 220 are in the unfolded state (e.g. Figure 10 As shown, the first surfaces 241 of the two door panels 240 are in the same plane. In this case, the included angle between the first surfaces 241 of the two door panels 240 and the base 210 can be a second angle, that is, when the second angle is a flat angle, the first surfaces 241 of the two door panels 240 and the base 210 also form a flat angle. In this case, the two door panels 240 and the rotating structure 220 together provide support for the flexible screen 110 to ensure the flatness of the flexible screen 110.

[0077] By the above scheme, two rotating structures 220 can drive the door plates 240 on both sides of the base 210 to move. When both rotating structures 220 are in the folded state, both door plates 240 rotate towards the direction in which the included angle between the first surface 241 and the base 210 decreases under the action of the respective elastic members 250. Thus, the movement direction of the ends of the two door plates 240 close to the base 210 is away from each other. Therefore, the distance between the ends of the two door plates 240 close to the base 210 is greater than the distance between the ends of the two door plates 240 away from the base 210. Thus, a space in the shape of a triangular prism can be formed to accommodate the water-drop-shaped bending part of the flexible screen 110. When both rotating structures 220 are in the unfolded state, the flexible screen 110 will always remain in the state of being attached to the door plates 240. Since the first surfaces 241 of the two door plates 240 are in the same plane, it can be ensured that the flexible screen 110 is in the state of being in the plane in the unfolded state, so as to facilitate the user to use.

[0078] As shown in Figure 3 and Figure 4 , in some embodiments of the present application, the rotating structure 220 forms a first protrusion 221 extending along the first rotation axis. Specifically, the first protrusion 221 can be a cylindrical solid structure. In this case, the axis of the first protrusion 221 can coincide with the first rotation axis. Of course, the first protrusion 221 can also be a solid structure of other shapes, which is not limited in the present application. The door plate 240 forms a first opening 242. Specifically, the first opening 242 of the door plate 240 can be a cylindrical hole. In this case, the axis of the first opening 242 can coincide with the first rotation axis. Specifically, the first opening 242 can be a blind hole to maximize the structural strength of the door plate 240. Of course, the first opening 242 can also be a through hole to adapt to different door plates 240. The specific form of the first opening 242 is not limited in the present application. The door plate 240 is sleeved on the first protrusion 221 through the first opening 242. The first protrusion 221 and the door plate 240 can be fitted with a small gap, i.e. the diameter of the first protrusion 221 is slightly smaller than the diameter of the first opening 242, so as to facilitate the rotation of the two. Of course, the first protrusion 221 and the door plate 240 can also be transitionally fitted, i.e. the diameter of the first protrusion 221 is substantially the same as the diameter of the first opening 242. In this case, the two can also rotate relative to each other, and the clearance between the two in the direction perpendicular to the rotation axis is very small, which is beneficial to improve the stability of the overall structure.

[0079] By the above scheme, the first protrusion 221 forms a rotation axis, and the door plate 240 is sleeved on the rotation axis through the first opening 242 to realize the rotating connection of the door plate 240 and the rotating structure 220. Moreover, the above design can facilitate the installation of the elastic member 250.

[0080] As shown in Figure 3 , Figure 4 and Figure 11 , in some embodiments of the present application, the elastic member 250 is a torsion spring. One end of the torsion spring is fixedly connected to the rotating structure 220, and the other end of the torsion spring is fixedly connected to the door plate 240. In the process of relative rotation between the rotating structure 220 and the door plate 240, the torsion spring will be deformed, thereby generating a restoring force, which can restore the relative rotation between the rotating structure 220 and the door plate 240 to the initial state. Specifically, the torsion spring is in the initial state when the rotating structure 220 is in the folded state. At this time, the elastic member 250 pushes the door plate 240 to the state where the first surface 241 and the included angle are less than the first angle, so as to accommodate the folded part in the water drop shape of the flexible screen 110; in the process of converting the rotating structure 220 from the folded state to the unfolded state, under the action of the abutting member 260, the door plate 240 rotates towards the direction in which the included angle between the door plate 240 and the rotating structure 220 increases, so that the first surface 241 of the door plate 240 and the surface of the rotating structure 220 are in the same plane or approximately in the same plane, thereby providing support for the flexible screen 110 and keeping the flexible screen 110 flat.

[0081] The torsion spring is located in the first opening 242. Specifically, the torsion spring can be located entirely in the first opening 242, so as to provide a stable environment for the torsion spring by using the first opening 242. Of course, the torsion spring can also be partially located in the first opening 242 and partially located outside the first opening 242, so as to adapt to different terminal devices 100. The torsion spring is sleeved on the first protrusion 221. Since a hole-shaped structure is formed in the middle of the torsion spring, sleeving the torsion spring on the first protrusion 221 can greatly save the overall space occupation, and using the first protrusion 221 can also limit the position of the torsion spring, prevent the torsion spring from moving too much in the direction perpendicular to the first rotation shaft, and ensure the stability of the work of the torsion spring.

[0082] As shown in Figure 11As shown, in some embodiments of this application, the door panel 240 forms a clearance hole 243. Specifically, the clearance hole 243 refers to a hole-like structure formed in the thickness direction at a portion of the door panel 240. This hole-like structure can be a structure with annular sidewalls or a structure with partial notches in the sidewalls. For example, the hole-like structure can be a circular hole with a circular perimeter; it can also be a groove-shaped structure with sidewalls on only three sides and no sidewall on the other side. In a specific embodiment of this application, the clearance hole 243 is a groove-shaped structure with sidewalls on only three sides, while there is no sidewall at the end of the door panel 240 near the base 210. This provides rotational space for the door panel 240 to rotate from the end near the base 210 toward the direction near the rotating structure 220. When the rotating structure 220 is in a folded state, the rotating structure 220 is at least partially located within the clearance hole 243. In this state, the door panel 240 has sufficient rotational space so that the included angle between the first surface 241 of the door panel 240 and the base 210 is less than a first angle.

[0083] like Figure 12 As shown, in some embodiments of this application, the rotating structure 220 includes: a middle frame 222, a first rocker arm 223, and a second rocker arm 224.

[0084] like Figure 12 and Figure 13 As shown, the middle frame 222 is used to support the flexible screen 110. Specifically, the surface of the middle frame 222 closest to the flexible screen 110 is in contact with the flexible screen 110, thereby providing support for the flexible screen 110. During the rotation of the middle frame 222, since the middle frame 222 is located far from the folding part of the flexible screen 110, the connection between the middle frame 222 and the flexible screen 110 does not need to be changed; it is only necessary to use the middle frame 222 to drive the movement of the flexible screen 110.

[0085] like Figure 12 and Figure 14 As shown, one end of the first rocker arm 223 is rotatably connected to the base 210. Specifically, the base 210 forms a second pivot, which is located on one side of the base 210. The rotation direction of the first rocker arm 223 relative to the base 210 is around the second pivot. The other end of the first rocker arm 223 is rotatably connected to the middle frame 222. Specifically, the end of the first rocker arm 223 closer to the base 210 is rotatably connected to the base 210, while the end of the first rocker arm 223 farther from the base 210 is rotatably connected to the middle frame 222. A third pivot is formed on the first rocker arm 223, and the rotation direction of the middle frame 222 relative to the first rocker arm 223 is around the third pivot.

[0086] like Figure 12 and Figure 15As shown, one end of the second rocker arm 224 is rotationally connected to the base 210. Specifically, the base 210 forms a fourth rotation axis, which is parallel to the second rotation axis, and the rotation direction of the second rocker arm 224 relative to the base 210 is the direction of rotation around the fourth rotation axis. In this case, both the first rocker arm 223 and the second rocker arm 224 rotate in the same plane, thereby causing the middle frame 222 to also rotate in the same plane, thereby ensuring the stability of the movement of the middle frame 222. The other end of the second rocker arm 224 is slidingly connected to the middle frame 222. During the rotation of the first rocker arm 223, the first rocker arm 223 causes the middle frame 222 to rotate, and the middle frame 222 causes the second rocker arm 224 to rotate. Since the second rotation axis and the fourth rotation axis are not coincident, relative movement occurs between the middle frame 222 and the second rocker arm 224. Since the middle frame 222 and the second rocker arm 224 are slidingly connected, the angle of the middle frame 222 relative to the second rocker arm 224 can be controlled to remain fixed by the second rocker arm 224. In addition, the combined action of the first rocker arm 223 and the second rocker arm 224 can cause the base 210 to rise or fall relative to the flexible screen 110 during the rotation of the rotation structure 220.

[0087] As shown, Figure 10 in some embodiments of the present application, when the rotation structure 220 is in the unfolded state, the fourth rotation axis is between the second rotation axis and the middle frame 222. Specifically, when the rotation structure 220 is in the unfolded state, the fourth rotation axis can be on the line between the second rotation axis and the middle frame 222, or it can be slightly offset from the line between the second rotation axis and the middle frame 222.

[0088] With the above scheme, the second rotation axis and the fourth rotation axis are not on the same line. The first rocker arm 223 can cause the middle frame 222 to rotate, and the middle frame 222 rotates around the second rotation axis. However, the angle between the middle frame 222 and the second rocker arm 224 remains fixed during the rotation of the middle frame 222. Therefore, during the transition of the rotation structure 220 from the folded state to the unfolded state, the distance between the middle frame 222 and the fourth rotation axis decreases, and during this process, the base 210 can be brought closer to the flexible screen 110 to provide support for the flexible screen 110. During the transition of the rotation structure 220 from the unfolded state to the folded state, the distance between the middle frame 222 and the fourth rotation axis increases, and during this process, the base 210 can be moved away from the flexible screen 110 to provide space to accommodate the water-drop-shaped bent portion of the flexible screen 110.

[0089] As shown, Figure 12 and Figure 14As shown, in some embodiments of the present application, the base 210 forms a first sliding groove 211. Specifically, the first sliding groove 211 extends in an arc shape around the second rotation axis. For example, the first sliding groove 211 can be a semicircle arc shape to adapt to the rotation structure 220 rotating to a right angle with the base 210 to a flat angle with the base 210. Of course, the first sliding groove 211 can also be a superior arc shape to adapt to a larger rotation range; the first sliding groove 211 can also be an inferior arc shape to adapt to a smaller rotation range; the present application does not limit the specific arc size of the first sliding groove 211. Since the base 210 is a plate structure, the semicircle arc structure can only occupy the space of the arc structure radius height of the base 210, so that the structure of the first sliding groove 211 can be set to a larger structure. The first rocker arm 223 forms a first sliding block 228 at one end close to the base 210. The first sliding block 228 can be located entirely within the first sliding groove 211, and the first sliding block 228 can only be partially located within the first sliding groove 211, as long as the first sliding block 228 and the first sliding groove 211 are slidingly connected. During the movement of the first sliding block 228 along the extension direction of the first sliding groove 211, the first rocker arm 223 and the base 210 rotate relative to each other around the second rotation axis. Since the first sliding groove 211 can be set to a larger structure, the first sliding block 228 can also be set to a larger structure, so that the cross-sectional area of the first rocker arm 223 is larger, effectively guaranteeing the structural strength of the first rocker arm 223.

[0090] Through the above scheme, the sliding connection between the first sliding groove 211 and the first sliding block 228 is used to realize the rotation connection of the base 210 and the first rocker arm 223. In this way, the volume of the first sliding groove 211 and the first sliding block 228 can be larger, guaranteeing the overall structural strength. And since the first sliding groove 211 is in an arc shape, the height occupied by the first sliding groove 211 is smaller, and in the case of not affecting the overall structure volume, this way can effectively increase the overall structural strength.

[0091] As Figure 14As shown, in some embodiments of this application, the first rocker arm 223 further forms a baffle 229, which is located at the end of the first rocker arm 223 near the base 210. The baffle 229 has a second surface 230, which is the surface of the baffle 229 near the flexible screen 110 when the rotating structure 220 is in the unfolded state. The second surface 230 can be planar. When the first surface 241 is also planar, the first surface 241 and the second surface 230 can jointly provide support for the flexible screen 110 when the rotating structure 220 is in the unfolded state. Specifically, the baffle 229 can be a plate-like structure, that is, the thickness of the baffle 229 is much smaller than the width and height of the baffle 229. The baffle 229 and other parts of the first rocker arm 223 can be integrally formed to ensure the connection strength between the two and facilitate manufacturing. The baffle 229 is disposed outside the first slide groove 211 to prevent the baffle 229 from affecting the relative sliding of the first slider 228 and the first slide groove 211.

[0092] With the above solution, when the rotating structure 220 is in the unfolded state, not only can the door panel 240 provide support for the flexible screen 110, but the baffle 229 can also provide support for the flexible screen 110, effectively reducing the bumpy feeling caused by pressing the folded part after the flexible screen 110 is unfolded, making the flexible screen 110 flatter.

[0093] like Figure 12 and Figure 15 As shown, in some embodiments of this application, the base 210 has a shaft 212 extending along a fourth rotating shaft. Specifically, the shaft 212 can be a cylindrical structure, and its axis coincides with the fourth rotating shaft. Specifically, the shaft 212 can be fixedly connected to other structures of the base 210 by welding, bonding, or other methods to ensure the structural strength of both; the shaft 212 can also be fixedly connected to other structures of the base 210 by screws, clips, or other structures to facilitate disassembly; the shaft 212 can also be integrally formed with other structures of the base 210 for ease of manufacturing. The second rocker arm 224 forms a second opening 232. Specifically, the second opening 232 can be a cylindrical hole to accommodate the shaft 212, and its axis can coincide with the fourth rotating shaft. The second rocker arm 224 is sleeved on the shaft 212 through the second opening 232, so that the second rocker arm 224 is rotatably connected to the base 210. Specifically, the second rocker arm 224 and the shaft 212 can be fitted with a small clearance, that is, the diameter of the shaft 212 is slightly smaller than the diameter of the second opening 232, so as to facilitate their rotation; the second rocker arm 224 and the shaft 212 can also be fitted with a transition, that is, the diameter of the shaft 212 and the diameter of the second opening 232 are basically the same, so as to ensure the stability of their movement.

[0094] By the above scheme, the shaft body 212 forms a rotation shaft, and the second rocker arm 224 is sleeved on the shaft body 212 through the second opening 232 to realize the rotation connection between the second rocker arm 224 and the base 210. Since the connection between the first rocker arm 223 and the base 210 provides strength support, the connection between the second rocker arm 224 and the base 210 only needs small structural strength, so that the shaft body 212 can be provided as a small structure, so as not to affect the volume of the overall structure.

[0095] As shown in Figure 12 , Figure 13 and Figure 14 , in some embodiments of the present application, the first rocker arm 223 forms a second protrusion 227 extending along a third rotation shaft. Specifically, the second protrusion 227 can be a cylindrical solid structure, in which case the axis of the second protrusion 227 can coincide with the third rotation shaft. Of course, the second protrusion 227 can also be a solid structure of other shapes, which is not limited in the present application. The middle frame 222 forms a third opening 226. Specifically, the third opening 226 can be a cylindrical hole, in which case the axis of the third opening 226 can coincide with the third rotation shaft. Specifically, the third opening 226 can be a blind hole to maximize the structural strength of the middle frame 222. Of course, the third opening 226 can also be a through hole to adapt to different middle frames 222. The specific form of the third opening 226 is not limited in the present application. The middle frame 222 is sleeved on the second protrusion 227 through the third opening 226, and the second protrusion 227 and the middle frame 222 can be fitted with a small gap, that is, the diameter of the second protrusion 227 is slightly smaller than the diameter of the third opening 226, so as to facilitate the rotation of the two. Of course, the second protrusion 227 and the middle frame 222 can also be transitionally fitted, that is, the diameter of the second protrusion 227 and the diameter of the third opening 226 are substantially the same, in which case the two can also rotate relative to each other, and the clearance between the two in the direction perpendicular to the rotation axis is very small, which is beneficial to improve the stability of the overall structure.

[0096] By the above scheme, the second protrusion 227 forms a rotation shaft, and the middle frame 222 is sleeved on the rotation shaft through the third opening 226 to realize the rotation connection between the first rocker arm 223 and the middle frame 222.

[0097] As shown in Figure 12 , Figure 13 and Figure 15As shown, in some embodiments of the present application, the middle frame 222 forms a second sliding groove 225. Specifically, the extending direction of the second sliding groove 225 is the same as the extending direction of the second rocker arm 224, so that the second rocker arm 224 and the middle frame 222 can be slidingly connected through the second sliding groove 225. The end of the second rocker arm 224 away from the base 210 forms a second sliding block 231, which can be entirely located in the second sliding groove 225, or can be partially located in the second sliding groove 225, as long as the second sliding block 231 and the second sliding groove 225 are slidingly connected. The second sliding block 231 and the second sliding groove 225 can be in a small gap fit to facilitate the relative sliding of the two; the second sliding block 231 and the second sliding groove 225 can also be in a transition fit to ensure the stability of the movement of the two. Through the above scheme, the second sliding groove 225 and the second sliding block 231 can realize the sliding connection of the second rocker arm 224 and the middle frame 222, so that the included angle between the middle frame 222 and the second rocker arm 224 remains fixed.

[0098] In some other embodiments of the present application, the rotating structure 220 can further include a middle frame 222 and a first rocker arm 223.

[0099] The middle frame 222 is used to support the flexible screen 110. Specifically, the surface of the middle frame 222 close to the flexible screen 110 is attached to the flexible screen 110, thereby providing support for the flexible screen 110. During the rotation of the middle frame 222, since the middle frame 222 is located far away from the folding part of the flexible screen 110, the connection between the middle frame 222 and the flexible screen 110 does not need to be changed, and only the movement of the flexible screen 110 driven by the middle frame 222 is needed.

[0100] One end of the first rocker arm 223 is rotationally connected to the base 210. Specifically, the base 210 forms a second rotation shaft, which is arranged on one side of the base 210, and the rotation direction of the first rocker arm 223 relative to the base 210 is the direction of rotating around the second rotation shaft. The other end of the first rocker arm 223 is fixedly connected to the middle frame 222. Specifically, the end of the first rocker arm 223 close to the base 210 is rotationally connected to the base 210, and the end of the first rocker arm 223 away from the base 210 is fixedly connected to the middle frame 222.

[0101] Through the above scheme, the structure can be further simplified. In the case of fixed connection between the middle frame 222 and the first rocker arm 223, only the first rocker arm 223 is needed to drive the middle frame 222 to rotate.

[0102] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hinge structure, characterized by, The hinge structure comprises: a base; a rotating structure, which has a folded state and an unfolded state relative to the base; the rotating structure comprises a middle frame and a first rocker arm, one end of the first rocker arm being rotatably connected to the base, and the other end of the first rocker arm being rotatably connected to the middle frame; a door panel, which is connected only with the middle frame, so that the door panel can rotate relative to the rotating structure, and so that, when the rotating structure is in the folded state, one end of the door panel close to the base is inclined towards the rotating structure; the door panel is formed with a clearance hole, and when the rotating structure is in the folded state, the rotating structure is at least partially located in the clearance hole; wherein the first rocker arm is further formed with a baffle, and the baffle has a second surface; a surface of the door panel away from the rotating structure is a first surface; the first surface and the second surface are both planes; when the rotating structure is in the unfolded state, the first surface and the second surface are in the same plane.

2. The hinge structure according to claim 1, wherein: the hinge structure further comprises a stopper, which is fixedly connected to the base; when the rotating structure is in the folded state, the door panel is not in contact with the stopper; and when the rotating structure is in the unfolded state, the door panel is in contact with the stopper.

3. The hinge structure of claim 2, wherein the stopper and the base are integrally formed.

4. The hinge structure according to claim 1, wherein: the hinge structure further comprises a first protrusion and a first opening, which are used to connect the door panel and the middle frame, so that the door panel can rotate relative to the middle frame.

5. The hinge structure according to claim 4, wherein: the rotating structure is formed with the first protrusion, and the door panel is formed with the first opening; the door panel is used to be sleeved on the first protrusion through the first opening, so as to be rotatably connected to the middle frame.

6. The hinge structure according to claim 5, wherein: the hinge structure further comprises an elastic member, which makes one end of the door panel close to the base incline towards the rotating structure when the rotating structure is in the folded state.

7. The hinge structure according to claim 6, wherein: the elastic member is a torsion spring, which is located in the first opening, is sleeved on the first protrusion, has one end fixedly connected to the first protrusion, and has the other end fixedly connected to the door panel.

8. The hinge structure according to claim 2, wherein: the rotating structure, the door panel and the stopper are all provided in two, one of the rotating structures, one of the door panels and one of the stoppers are provided on one side of the base, and the other of the rotating structures, the other of the door panels and the other of the stoppers are provided on the other side of the base.

9. The hinge structure according to claim 8, wherein: The surface of the door panel away from the rotating structure is a first surface, and the first surface is a plane; when both of the rotating structures are in the unfolded state, the first surfaces of the two door panels are in the same plane.

10. The hinge structure of claim 8, wherein, when both of the rotating structures are in the folded state, the distance between the ends of the two door panels close to the base is greater than the distance between the ends of the two door panels away from the base.

11. The hinge structure of any one of claims 1-10, wherein, when the rotating structure is in the folded state, the rotating structure is at a right angle relative to the base; when the rotating structure is in the unfolded state, the rotating structure is at a flat angle relative to the base.

12. The hinge structure of any one of claims 1-10, wherein, the degree of freedom of the door panel relative to the rotating structure is 1.

13. The hinge structure of any one of claims 1-10, wherein, the rotating structure further comprises a second rocker arm, one end of the second rocker arm is rotationally connected to the base, and the other end of the second rocker arm is slidingly connected to the middle frame; the first rocker arm is rotationally connected to the middle frame.

14. The hinge structure of claim 13, wherein, the middle frame is formed with a first rotation shaft, and the door panel is rotationally connected to the rotating structure about the first rotation shaft; the base is formed with a second rotation shaft, one end of the first rocker arm is rotationally connected to the base about the second rotation shaft; the first rocker arm is formed with a third rotation shaft, the third rotation shaft is parallel to the second rotation shaft, and the other end of the first rocker arm is rotationally connected to the middle frame about the third rotation shaft; the base is formed with a fourth rotation shaft, the fourth rotation shaft is parallel to the second rotation shaft; one end of the second rocker arm is rotationally connected to the base about the fourth rotation shaft, and the other end of the second rocker arm is slidingly connected to the middle frame.

15. The hinge structure of claim 14, wherein, when the rotating structure is in the unfolded state, the fourth rotation shaft is between the second rotation shaft and the middle frame.

16. The hinge structure of claim 14, wherein, the base is formed with a first sliding groove, one end of the first rocker arm close to the base is formed with a first sliding block, the first sliding groove extends in an arc shape about the second rotation shaft, and the first sliding block is at least partially located in the first sliding groove; the first rocker arm is slidingly connected to the first sliding groove through the sliding block to be rotationally connected to the base.

17. The hinge structure of any one of claims 14-16, wherein, the base has a shaft body extending along the fourth rotation shaft, and the second rocker arm is formed with a second opening; the second rocker arm is sleeved on the shaft body through the second opening to be rotationally connected to the base.

18. The hinge structure of any one of claims 14-16, wherein, The first rocker arm is formed with a second protrusion extending along the third rotation axis, and the middle frame is formed with a third opening; the middle frame is sleeved on the second protrusion through the third opening to be rotationally connected to the first rocker arm.

19. The hinge structure of claim 14, wherein, The middle frame is formed with a second sliding groove, and the second rocker arm is formed at an end away from the base with a second sliding block at least partially located in the second sliding groove; the second sliding block and the second sliding groove are in a clearance fit or a transition fit.

20. A hinge structure, characterized by Comprise: a base; a rotation structure having a folded state and an unfolded state relative to the base; The rotation structure comprises a middle frame and a first rocker arm, one end of the first rocker arm is rotationally connected to the base, and the other end of the first rocker arm is rotationally connected to the middle frame; a door panel connected to the middle frame so that the door panel can rotate relative to the rotation structure, and so that when the rotation structure is in the folded state, the end of the door panel close to the base is inclined towards the rotation structure; the door panel is formed with a avoiding hole, and when the rotation structure is in the folded state, the rotation structure is at least partially located in the avoiding hole; wherein the first rocker arm is further formed with a baffle, the baffle has a second surface; The surface of the door panel away from the rotation structure is a first surface; The first surface and the second surface are both planes; When the rotation structure is in the unfolded state, the first surface and the second surface are in the same plane.

21. The hinge structure of claim 20, wherein, The hinge structure further comprises a stopper fixedly connected to the base; When the rotation structure is in the folded state, the door panel is not in contact with the stopper; when the rotation structure is in the unfolded state, the door panel is in contact with the stopper.

22. The hinge structure of claim 21, wherein, The stopper and the base are integrally formed.

23. The hinge structure of claim 20, wherein, The hinge structure further comprises a first protrusion and a first opening for connecting the door panel and the middle frame so that the door panel can rotate relative to the middle frame.

24. The hinge structure of claim 23, wherein, The rotation structure is formed with the first protrusion, and the door panel is formed with the first opening; the door panel is sleeved on the first protrusion through the first opening to be rotationally connected to the middle frame.

25. The hinge structure of claim 24, wherein, The hinge structure further comprises a resilient member, and when the rotation structure is in the folded state, the resilient member causes the end of the door panel close to the base to be inclined towards the rotation structure.

26. The hinge structure of claim 25, wherein, The resilient member is a torsion spring, the torsion spring is located in the first opening, the torsion spring is sleeved on the first protrusion, one end of the torsion spring is fixedly connected to the first protrusion, and the other end of the torsion spring is fixedly connected to the door panel.

27. The hinge structure of claim 21, wherein: two of the rotating structures, two of the door panels, and two of the abutting members are provided, one of the rotating structures, one of the door panels, and one of the abutting members are provided on one side of the base, and the other of the rotating structures, the other of the door panels, and the other of the abutting members are provided on the other side of the base.

28. The hinge structure of claim 27, wherein: a surface of the door panel away from the rotating structure is a first surface, the first surface is a plane, and the first surfaces of the two door panels are in the same plane when the two rotating structures are in the unfolded state.

29. The hinge structure of claim 27, wherein: a distance between the ends of the two door panels close to the base is greater than a distance between the ends of the two door panels away from the base when the two rotating structures are in the folded state.

30. The hinge structure of any one of claims 20-29, wherein: the rotating structure is perpendicular to the base when the rotating structure is in the folded state, and the rotating structure is parallel to the base when the rotating structure is in the unfolded state.

31. The hinge structure of any one of claims 20-29, wherein: the rotating structure further comprises a second rocker arm, one end of the second rocker arm is rotatably connected to the base, and the other end of the second rocker arm is slidably connected to the middle frame. the first rocker arm is rotatably connected to the middle frame.

32. The hinge structure of claim 31, wherein: the middle frame forms a first rotation shaft, and the door panel is rotatably connected to the rotating structure about the first rotation shaft; the base forms a second rotation shaft, one end of the first rocker arm is rotatably connected to the base about the second rotation shaft, the first rocker arm forms a third rotation shaft parallel to the second rotation shaft, and the other end of the first rocker arm is rotatably connected to the middle frame about the third rotation shaft; the base forms a fourth rotation shaft parallel to the second rotation shaft, one end of the second rocker arm is rotatably connected to the base about the fourth rotation shaft, and the other end of the second rocker arm is slidably connected to the middle frame.

33. The hinge structure of claim 32, wherein: the fourth rotation shaft is between the second rotation shaft and the middle frame when the rotating structure is in the unfolded state.

34. The hinge structure of claim 32, wherein: the base forms a first sliding groove, one end of the first rocker arm close to the base forms a first sliding block, the first sliding groove extends in an arc shape about the second rotation shaft, and the first sliding block is at least partially located in the first sliding groove; and the first rocker arm is slidably connected to the first sliding groove via the sliding block to be rotatably connected to the base.

35. The hinge structure of any one of claims 32-34, wherein: ​ The base has a shaft body extending along the fourth rotation axis, and the second rocker arm is formed with a second opening; the second rocker arm is sleeved on the shaft body through the second opening to be rotatably connected to the base.

36. The hinge structure according to any one of claims 32-34, wherein, The first rocker arm is formed with a second protrusion extending along the third rotation axis, and the middle frame is formed with a third opening; the middle frame is sleeved on the second protrusion through the third opening to be rotatably connected to the first rocker arm.

37. The hinge structure according to claim 34, wherein, The middle frame is formed with a second sliding groove, and the second rocker arm is formed at an end away from the base with a second sliding block at least partially located in the second sliding groove; the second sliding block and the second sliding groove are in a clearance fit or a transition fit.

38. The hinge structure according to any one of claims 20-29, wherein, The door panel is not connected to the first rocker arm.

39. The hinge structure according to any one of claims 20-29, wherein, The door panel is not connected to the base.

40. The hinge structure according to any one of claims 32-34, wherein, The door panel is not connected to the second rocker arm.

41. A foldable screen terminal device, comprising: The hinge structure according to any one of claims 1-40 is connected to a flexible screen to be folded or unfolded under the driving of the hinge structure.

42. The foldable screen terminal device of claim 41, wherein, The flexible screen is attached to the door panel, and the door panel drives the flexible screen so that the flexible screen is in a water drop shape when the rotation structure is in the folded state.

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