Rotating shaft assembly and terminal equipment

Abstract

A rotating shaft assembly comprises a base and a swing arm, the base comprises a first part and a second part which are fixedly connected, and a first sliding groove is formed between the first part and the second part; the swing arm comprises a rotating part and a swing part, the rotating part is in sliding connection with the first sliding groove, and when the rotating part slides relative to the first sliding groove, the swing part rotates relative to the base; the rotating part comprises at least one first surface and at least one second surface, the at least one first surface is arranged opposite to one side surface of the first part, the at least one second surface is arranged opposite to one side surface of the second part, and at least part of the first surface and at least part of the second surface are arranged in a staggered mode along the rotating axis of the swinging part. The terminal equipment comprises a shell, a flexible display screen and the rotating shaft assembly, the flexible display screen is connected with the shell, the flexible display screen comprises a bending area, the rotating shaft assembly is located on the non-display side of the flexible display screen, and the rotating shaft assembly and the bending area are correspondingly arranged. Therefore, the thickness and the size of the rotating shaft assembly can be reduced, and the space occupancy rate of the rotating shaft assembly in the terminal equipment is reduced.

Description

A rotating shaft assembly and terminal equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 27, 2022, with application number 202211185813.3 and invention name “A rotating shaft assembly and terminal device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of rotating shafts, and in particular to a rotating shaft assembly and a terminal device. Background Art

[0003] The hinge assembly is a crucial component in foldable screen devices, such as mobile phones and tablets. In related art, the hinge assembly consists of a base and a swing arm rotatably connected to the base. To ensure sufficient rigidity, the swing arm and base are relatively thick, resulting in a larger overall thickness and volume of the hinge assembly, which occupies a significant amount of space when used in a terminal device.

[0004] Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a hinge assembly and a terminal device, so as to reduce the thickness and volume of the hinge assembly and reduce the space occupied by the hinge assembly in the terminal device.

[0006] An embodiment of the first aspect of the present application provides a rotating shaft assembly, the rotating shaft assembly comprising:

[0007] a base, the base comprising a first portion and a second portion fixedly connected, a first sliding groove being formed between the first portion and the second portion;

[0008] a swing arm, the swing arm comprising a rotating portion and a swinging portion, the rotating portion being slidably connected to the first sliding groove, and when the rotating portion slides relative to the first sliding groove, the swinging portion rotates relative to the base;

[0009] The rotating portion includes at least one first surface and at least one second surface, the at least one first surface is arranged opposite to a side surface of the first portion, and the at least one second surface is arranged opposite to a side surface of the second portion. Along the rotation axis of the swinging portion, at least parts of the first surface and the second surface are staggered.

[0010] In some embodiments, the number of the swing arms is at least two, and the at least two swing arms include a first swing arm and a second swing arm, and the swinging portion of the first swing arm and the swinging portion of the second swing arm are arranged on both sides of the base.

[0011] In some embodiments, the rotating shaft assembly further includes a shaft cover, and the shaft cover is connected to the base.

[0012] In some embodiments, the rotating portion includes two first surfaces, and along the rotation axis of the swinging portion, the at least one second surface is located between the two first surfaces.

[0013] In some embodiments, the first part includes a first main body and two connecting parts located on both sides of the first main body, each of the connecting parts includes two pressing blocks, each first surface is arranged opposite to the third surface of a pressing block, and the third surface is a side surface of the pressing block facing the second part.

[0014] In some embodiments, each of the connecting portions further includes a connecting piece, and the connecting piece connects the two pressing blocks.

[0015] In some embodiments, the connecting member is strip-shaped, and a first strip groove is provided on a surface of the rotating portion away from the shaft cover. The first strip groove extends along the length direction of the connecting member, and at least part of the structure of the connecting member is placed in the first strip groove.

[0016] In some embodiments, a first recess is provided on a side surface of the rotating portion away from the rotation axis of the swinging portion, at least a portion of the pressing block is disposed in the first recess, and a bottom wall of the first recess includes the first surface.

[0017] In some embodiments, a second recess is provided on a side surface of the rotating part facing the rotation axis of the swinging part, a first protrusion is provided on the second part, at least part of the structure of the first protrusion extends into the second recess, and the bottom wall of the second recess includes the second surface.

[0018] In some embodiments, a first limit block is provided on the bottom wall of the second recess, and the first limit block is located on a side of the rotating portion away from the swinging portion;

[0019] A third recess is provided on a surface of the first protrusion facing the second recess, and at least a portion of the first limiting block is disposed in the third recess.

[0020] In some embodiments, a first through hole is provided on the swing portion, and when the at least two swing arms are in an unfolded state, an end portion of the second portion extends into the first through hole along the thickness direction of the rotating shaft assembly.

[0021] In some embodiments, the swing portion of the first swing arm and the swing portion of the second swing arm are symmetrically arranged on both sides of the base.

[0022] In some embodiments, the at least one first surface and the at least one second surface are both arc-shaped surfaces.

[0023] In some embodiments, the at least one first surface and the at least one second surface are both arc surfaces, and the central axis of the at least one first surface coincides with the central axis of the at least one second surface.

[0024] In some embodiments, the thickness of the rotating portion along the radial direction is different.

[0025] In some embodiments, at least a portion of the structure of the rotating portion is placed in the first sliding groove.

[0026] In some embodiments, the first portion and the second portion are connected to form an integral structure.

[0027] In some embodiments, the connection method between the first part and the second part includes at least one of welding connection, adhesive connection, screw connection, and nut connection.

[0028] An embodiment of the second aspect of the present application provides a terminal device, which includes a shell, a flexible display screen and any of the above-mentioned hinge assemblies, wherein the flexible display screen is connected to the shell, the flexible display screen includes a bending area, the hinge assembly is located on the non-display side of the flexible display screen, and the hinge assembly is arranged corresponding to the bending area.

[0029] In some embodiments, the terminal device is a foldable screen terminal device.

[0030] Beneficial effects of the embodiments of the present application:

[0031] In the hinge assembly provided in an embodiment of the present application, a first slot is formed between the first and second portions of the base, and the rotating portion of the swing arm is slidably connected to the base via the first slot. The swing portion is disposed outside the first slot, and during the sliding motion of the rotating portion relative to the first slot, the swing portion rotates relative to the base. Since at least portions of the first and second surfaces are staggered along the rotation axis of the swing portion, i.e., the first and second surfaces are located at different positions relative to the rotating portion, when the hinge assembly is subjected to an external force, when the rotating portion contacts the first or second portion, the force-bearing surface of the rotating portion relative to the first portion and the force-bearing surface of the rotating portion relative to the second portion are located at different positions. This results in a more dispersed force on the rotating portion, the first portion, and the second portion, and consequently, less force on the first and second surfaces of the rotating portion, as well as less force on the side surface of the first portion opposite the first surface and the side surface of the second portion opposite the second surface. Therefore, there is no need to increase the rigidity of the hinge assembly by increasing the thickness of the swing arm, the first portion, and the second portion, thereby reducing the thickness and volume of the hinge assembly and the space occupied by the hinge assembly within the terminal device.

[0032] Of course, it is not necessary to achieve all the advantages described above at the same time when implementing any product or method of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0034] FIG1 is a structural diagram of a terminal device in some embodiments of the present application;

[0035] FIG2 is a structural diagram of a rotating shaft assembly in an expanded state in some embodiments of the present application;

[0036] FIG3 is a structural diagram of a rotating shaft assembly in a closed state in some embodiments of the present application;

[0037] FIG4 is an exploded structural diagram of a rotating shaft assembly in some embodiments of the present application;

[0038] FIG5 is a cross-sectional view of the rotating shaft assembly along the AA direction in FIG2;

[0039] FIG6 is a cross-sectional view of a shaft assembly in an expanded state along the direction BB in FIG2 in some embodiments of the present application;

[0040] FIG7 is a cross-sectional view of a rotating shaft assembly in a closed state along the direction BB in FIG2 in some embodiments of the present application;

[0041] FIG8 is a cross-sectional view of a shaft assembly in an expanded state along the CC direction in FIG2 in some embodiments of the present application;

[0042] FIG9 is a cross-sectional view of a rotating shaft assembly in a closed state along the CC direction in FIG2 in some embodiments of the present application;

[0043] FIG10 is another structural diagram of a rotating shaft assembly in some embodiments of the present application;

[0044] FIG11 is a cross-sectional view of the rotating shaft assembly in FIG10 along the A'-A' direction;

[0045] FIG12 is a cross-sectional view of the rotating shaft assembly in FIG10 along the C'-C' direction;

[0046] FIG13 is a front view of a rotating shaft assembly in some embodiments of the present application;

[0047] FIG14 is a structural diagram of a base in some embodiments of the present application;

[0048] FIG15 is a structural diagram of a swing arm in some embodiments of the present application;

[0049] FIG16 is another structural diagram of a swing arm in some embodiments of the present application;

[0050] FIG17 is a structural diagram of another swing arm in some embodiments of the present application;

[0051] FIG18 is a partial structural diagram of a base in some embodiments of the present application;

[0052] FIG19 is a structural diagram of another swing arm in some embodiments of the present application;

[0053] FIG20 is a structural diagram of the swing arm shown in FIG19 installed on a terminal device;

[0054] FIG21 is a structural diagram of a swing arm in a comparative example. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field based on this application are within the scope of protection of this application.

[0056] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0057] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0058] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "below," "above," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "below" another element or feature would then be oriented as "above" or "above" another element or feature. Thus, the example term "below" may include both above and below orientations. The device may be oriented otherwise, such as rotated 90 degrees or in other orientations, and the spatially relative descriptors used herein are interpreted accordingly.

[0059] To reduce the thickness and volume of the hinge assembly and minimize the space occupied by the hinge assembly within the terminal device, the present application provides a hinge assembly and terminal device. The hinge assembly and terminal device provided by the present application are described in detail below with reference to the accompanying drawings. The hinge assembly can be applied to foldable screen devices such as mobile phones, tablets, laptops, and watches. The hinge assembly can also be used in other devices that use hinges or hinges, and this application does not limit this.

[0060] As shown in Figures 2 to 14, an embodiment of the first aspect of the present application provides a rotating shaft assembly 10, which includes a base 1 and a swing arm 4. The base 1 includes a first portion 2 and a second portion 3 that are fixedly connected, and a first sliding groove 21 is formed between the first portion 2 and the second portion 3. The swing arm 4 includes a rotating portion 41 and a swinging portion 42. The rotating portion 41 is slidably connected to the first sliding groove 21. When the rotating portion 41 slides relative to the first sliding groove 21, the swinging portion 42 rotates relative to the first portion 2. The rotating portion 41 includes at least one first surface 411 and at least one second surface 412. The at least one first surface 411 is disposed opposite to a side surface of the first portion 2, and the at least one second surface 412 is disposed opposite to a side surface of the second portion 3. As shown in Figure 5, along the rotation axis L of the swinging portion 42, at least portions of the first surface 411 and the second surface 412 are staggered.

[0061] In the embodiments of the present application, as shown in Figures 2, 3, and 10, the width direction of the hinge assembly 10 is defined as the X direction, the length direction of the hinge assembly 10 is defined as the Y direction, and the thickness direction of the hinge assembly 10 is defined as the Z direction. The extension direction of the rotation axis L of the swinging portion 42 of the hinge assembly 10 is parallel to the length direction Y of the hinge assembly 10, and the extension direction of the rotation axis L of the swinging portion 42 of the hinge assembly 10 is perpendicular to the width direction Y and the thickness direction Z of the hinge assembly 10. As shown in Figures 1 and 2, when the hinge assembly 10 is installed in a terminal device, the width direction X of the hinge assembly 10 is also the width direction X' of the terminal device, the length direction Y of the hinge assembly 10 is also the length direction Y' of the terminal device, and the thickness direction Z of the hinge assembly 10 is also the thickness direction Z' of the terminal device. For ease of description, when the hinge assembly 10 is installed in a display device, the direction toward the display screen of the display device is defined as upward, and the direction away from the display screen of the display device is defined as downward.

[0062] In the embodiment of the present application, along the rotation axis L of the swinging portion 42, that is, along an extending direction parallel to the rotation axis L of the swinging portion 42, at least a portion of each first surface 411 and each second surface 412 is staggered. That is, along the thickness direction Z of the shaft assembly 10, the orthographic projection of the at least one first surface 411 and the orthographic projection of the at least one second surface 412 do not overlap or partially overlap.

[0063] Optionally, as shown in Figures 5 and 11, along the rotation axis L of the swinging portion 42, each first surface 411 and each second surface 412 are completely staggered, that is, along the thickness direction Z of the shaft assembly 10, the orthographic projection of at least one first surface 411 does not overlap with the orthographic projection of at least one second surface 412.

[0064] Optionally, along the rotation axis L of the swinging portion 42, portions of the structures of each first surface 411 and each second surface 412 are staggered, that is, along the thickness direction Z of the shaft assembly 10, the orthographic projection of at least one first surface 411 partially overlaps with the orthographic projection of at least one second surface 412. Optionally, along the length direction Y of the shaft assembly 10, the orthographic projection of an edge of a first surface 411 along the thickness direction Z overlaps with the orthographic projection of an edge of an adjacent second surface 412 along the thickness direction Z.

[0065] Optionally, at least one first surface 411 and at least one second surface 412 are both arcuate surfaces. Optionally, as shown in Figures 14, 15, 16, and 18, the first portion 2 includes a fourth surface 24, which is disposed opposite the first surface 411 along the thickness direction Z, i.e., the orthographic projection of the fourth surface 24 overlaps the orthographic projection of the first surface 411 along the thickness direction Z. The second portion 3 includes a fifth surface 34, which is disposed opposite the second surface 412 along the thickness direction Z, i.e., the orthographic projection of the fifth surface 34 overlaps the orthographic projection of the second surface 412 along the thickness direction Z. The first chute 21 is formed by a first sidewall (upper sidewall) and a second sidewall (lower sidewall) along the thickness direction Z, and two bottom walls along the length direction Y. The fourth surface 24 can serve as the first sidewall of the first chute 21, and the fifth surface 34 can serve as the second sidewall of the first chute 21. The two bottom walls of the first chute 21 are respectively disposed opposite the two sidewalls of the rotating portion 41 along the length direction Y.

[0066] The first surface 411 is the area on the rotating portion 41 of the swing arm 4 that contacts the first portion 2 and applies upward pressure to the first portion 2 when the swing arm 4 is subjected to an external force. For example, when the swing arm 4 is subjected to an upward pulling force, the first surface 411 of the rotating portion 41 of the swing arm 4 contacts the fourth surface 24 of the first portion 2, and applies upward pressure to the first portion 2 at the first surface 411. The second surface 412 is the area on the rotating portion 41 of the swing arm 4 that contacts the second portion 3 and applies downward pressure to the second portion 3 when the swing arm 4 is subjected to an external force. For example, when the swing arm 4 is subjected to a downward squeezing force, the second surface 412 of the rotating portion 41 of the swing arm 4 contacts the fifth surface 34 of the second portion 3, and applies downward pressure to the second portion 3 at the second surface 412.

[0067] In a comparative example, as shown in Figures 16, 18, and 21, the rotating portion 41 includes two first surfaces 411 and a sixth surface 410 connecting the two first surfaces 411. When the swing arm 4 in Figure 21 is mounted on the base 1, since the two first surfaces 411 are disposed opposite the fourth surface 24 of the first portion 2, and the sixth surface 410 is not disposed opposite the fourth surface 24 of the first portion 2, the sixth surface 410 does not meet the definition of the first surface 411 in this application and does not belong to the first surface 411.

[0068] In the rotating shaft assembly 10 provided in the embodiment of the present application, the first surface 411 and the second surface 412 are at least partially staggered along the rotation axis L of the swinging portion 42, i.e., at least one first surface 411 and at least one second surface 412 are located at different positions on the rotating portion 41. This allows the rotating shaft assembly 10 to be subjected to an external force, so that when the rotating portion 41 contacts the first portion 2 or the second portion 3, the force-bearing surface of the rotating portion 41 relative to the first portion 2 and the force-bearing surface of the rotating portion 41 relative to the second portion 3 are located at different positions. This results in a more dispersed force on the rotating portion 41, the first portion 2, and the second portion 3. This results in less force on the rotating portion 41 on the first surface 411 and the second surface 412, and also less force on the side surface of the first portion 2 opposite the first surface 411 and the side surface of the second portion 3 opposite the second surface 412. Specifically, at the first surface 411, since the second portion 3 is not subjected to force in this area, the required stiffness of the second portion 3 at the first surface 411 is less, and the thickness of the second portion 3 can be reduced accordingly. At the second surface 412, since the first portion 2 is not subjected to force in this area, the required rigidity at the second surface 412 is relatively low, and the thickness of the first portion 2 can be reduced accordingly. Therefore, there is no need to increase the rigidity of the hinge assembly 10 by increasing the thickness of the swing arm 4, the first portion 2, and the second portion 3. This allows the thickness and volume of the hinge assembly 10 to be reduced, thereby reducing the space occupied by the hinge assembly 10 within the terminal device. Furthermore, due to the relatively small thickness and volume of the hinge assembly 10, when the hinge assembly 10 is used in a terminal device such as a foldable screen mobile phone, the hinge assembly 10 occupies a relatively small space, which facilitates the miniaturization and thinness of the terminal device.

[0069] Among them, the number and area of ​​the first surfaces 411 can be set according to actual needs, and the number and area of ​​the second surfaces 412 can also be set according to actual needs, which is not limited in this application.

[0070] In some embodiments, the hinge assembly 10 further includes a shaft cover 20, which is connected to the base 1. As shown in FIG2 , the shaft cover 20 has a storage space, and portions of the first portion 2 and the second portion 3 are disposed within the shaft cover 20. When the hinge assembly 10 is installed in a terminal device, the shaft cover 20 can serve as a portion of the terminal device's housing 30, or the shaft cover 20 can be connected to the terminal device's housing 30. The shaft cover 20 can be connected only to the first portion 2 or the second portion 3 of the base 1, or it can be connected to both the first portion 2 and the second portion 3.

[0071] Optionally, the base 1 and the shaft cover 20 may be locked and connected by fasteners, and the fasteners include but are not limited to screws, bolts, nuts, etc. Optionally, the base 1 and the shaft cover 20 may be welded or bonded.

[0072] In some embodiments, the number of the swing arms 4 is at least two, and the at least two swing arms 4 include a first swing arm and a second swing arm. The swing portion of the first swing arm and the swing portion of the second swing arm are arranged on both sides of the base 1.

[0073] In the embodiment of the present application, the first swing arm and the second swing arm have the same structure, and the structures of the first swing arm and the second swing arm are the same as those of the swing arm 4. The swing portion of the first swing arm and the swing portion of the second swing arm are respectively arranged on both sides of the base 1 along the width direction X. The number of the first swing arm and the second swing arm can be equal, or the number of the first swing arm and the second swing arm can be unequal, and this is not limited by the present application. The swing portion of the first swing arm and the swing portion of the second swing arm are arranged on both sides of the base 1, so that when the hinge assembly 10 is applied to a terminal device, the first swing arm and the second swing arm can drive the middle frame located on both sides of the hinge assembly 10 in the terminal device to rotate synchronously.

[0074] Optionally, the swing portion of the first swing arm and the swing portion of the second swing arm are symmetrically arranged on both sides of the base 1. The number of first swing arms and second swing arms can be equal, and each first swing arm is correspondingly arranged with a second swing arm, and the corresponding swing portions of the first swing arm and the swing portions of the second swing arm are symmetrically arranged on both sides of the base 1 along the width direction X, so that when the rotating shaft assembly 10 is subjected to an external force, the swing portion of the first swing arm and the swing portion 42 of the second swing arm are subjected to similar force conditions and rotate synchronously.

[0075] For ease of description, the following describes the rotating shaft assembly 10 provided in an embodiment of the present application by taking the example that the rotating shaft assembly 10 includes two swing arms 4, that is, the rotating shaft assembly 10 includes a first swing arm and a second swing arm, and the swinging parts 42 of the two swing arms 4 are respectively arranged on both sides of the base 1.

[0076] In some embodiments, at least a portion of the structure of the rotating portion 41 is disposed in the first sliding groove 21 to be slidably connected to the first sliding groove 21 .

[0077] Optionally, the rotating portion 41 and the swinging portion 42 are integrally formed. As shown in Figures 2 and 10 , when the rotating portions 41 of the two swing arms 4 are placed in the first chute 21 , the two swinging portions 42 are located on opposite sides of the rotating portions 41 . As the rotating portion 41 slides relative to the first portion 2 and the second portion 3 , the swinging portion 42 rotates relative to the first portion 2 and the second portion 3 .

[0078] In the embodiment of the present application, the rotating shaft assembly 10 includes an expanded state and a closed state, as shown in Figures 2, 3, 6, and 7. Figure 6 is a cross-sectional view of the rotating shaft assembly 10 in the expanded state along the direction BB in Figure 2, and Figure 7 is a cross-sectional view of the rotating shaft assembly 10 in the closed state along the direction BB in Figure 2. As shown in Figures 2 and 7, in the expanded state of the rotating shaft assembly 10, the two swinging portions 42 are separated and approximately horizontally positioned. As shown in Figures 3 and 6, in the closed state of the rotating shaft assembly 10, the two swinging portions 42 are close to each other and approximately vertically positioned. During the transition of the rotating shaft assembly 10 from the expanded state to the closed state, the two rotating portions 41 slide relative to the first portion 2 and the second portion 3. The sides of the two rotating portions 41 away from the swinging portions 42 move in a direction away from each other, and the sides of the two swinging portions 42 away from the rotating portions 41 rotate in a direction toward each other. During the transition of the hinge assembly 10 from the closed state to the expanded state, the two rotating parts 41 slide relative to the first part 2 and the second part 3, so that the sides of the two rotating parts 41 away from the swinging part 42 move in a direction toward each other, and the sides of the two swinging parts 42 away from the rotating part 41 rotate in a direction away from each other.

[0079] Optionally, the rotation range of each swing portion 42 from the expanded state to the closed state may be 85 degrees to 95 degrees. In one example, the rotation range of each swing portion 42 from the expanded state to the closed state may be 90 degrees.

[0080] In some embodiments, the rotating portion 41 has two first surfaces 411 , and along a vertical axis L perpendicular to the rotating axis L of the swinging portion 42 , an orthographic projection of at least one second surface 412 is located between the orthographic projections of the two first surfaces 411 .

[0081] In the embodiment of the present application, as shown in FIG5 , each rotating portion 41 and the first portion 2 have two first surfaces 411. When the swing arm 4 is subjected to an upward pulling force, the rotating portion 41 applies upward pressure to the first portion 2 through the two first surfaces 411, further dispersing the pressure exerted by the rotating portion 41 on the first portion 2, thereby further reducing the thickness of the swing arm 4 and the first portion 2. Furthermore, along the thickness direction Z of the shaft assembly 10, the orthographic projections of the two first surfaces 411 are located on either side of the orthographic projection of at least one second surface 412. This allows the force-bearing surface of the rotating portion 41 relative to the second portion 3 to be located between the force-bearing surface of the rotating portion 41 relative to the first portion 2 along the rotation axis L of the swing portion 42, thereby making the force applied to the rotating portion 41 more uniform.

[0082] Optionally, as shown in FIG. 5 , the two first surfaces 411 are symmetrically distributed on both sides of the second surface 412 .

[0083] Optionally, as shown in Figures 2 and 5, along the length direction Y of the shaft assembly 10, the two first surfaces 411 are respectively arranged close to the two side edges of the rotating part 41, and the two first surfaces 411 respectively include the two side edges of the rotating part 41, so that when the rotating part 41 slides in the first slide groove 21, the first part 2 can limit the two side edges of the rotating part 41 that are prone to shaking, thereby increasing the stability of the rotating part 41 during the sliding process.

[0084] In some embodiments, the first part 2 includes a first main body portion 22 and two connecting portions 23 located on both sides of the first main body portion 22. The two connecting portions 23 include two pressing blocks 231. Each first surface 411 is arranged opposite to the third surface 2311 of a pressing block 231. The third surface 2311 is a side surface of the pressing block 231 facing the second part 3.

[0085] In the embodiment of the present application, as shown in Figures 10, 11, and 12, Figure 10 is a structural diagram of a shaft assembly 10 in the embodiment of the present application; Figure 11 is a cross-sectional view of the shaft assembly 10 in Figure 10 along the A'-A' direction; and Figure 12 is a cross-sectional view of the shaft assembly 10 in Figure 10 along the C'-C' direction. The first portion 2 includes two connecting portions 23 and a first main body portion 22 located between the two connecting portions 23. The first main body portion 22 can be the middle portion of the first portion 2, as shown in Figure 14. Each connecting portion 23 includes two pressing blocks 231. As shown in Figures 14, 15, 16, and 18, the third surfaces 2311 of the two pressing blocks 231 are respectively arranged opposite to the two first surfaces 411 of the rotating portion 41. Correspondingly, the first portion 2 includes two fourth surfaces 24, and the fourth surfaces 24 of the first portion 2 form the third surfaces 2311 of the pressing blocks 231.

[0086] When the swing arm 4 is subjected to an upward pulling force, the first part 2 applies downward pressure to the rotating part 41 through the two pressure blocks 231. The two first surfaces 411 can disperse the pressure of the first part 2 on the rotating part 41 and the force of the rotating part 41 on the first part 2, which is conducive to further reducing the thickness of the swing arm 4 and the first part 2.

[0087] In the present embodiment, a first sub-chute is formed between each pressing block 231 and the second portion 3. The two first sub-chute formed by the two pressing blocks 231 and the second portion 3 constitute the first chute 21, with the openings of the two first sub-chute facing each other. Along the length direction Y of the shaft assembly 10, the two sides of the rotating portion 41 are respectively positioned within the two first sub-chute and slidably connected thereto.

[0088] In some embodiments, as shown in FIG. 14 and FIG. 18 , each connecting portion 23 further includes a connecting member 232 , and the connecting member 232 connects the two pressing blocks 231 .

[0089] In the embodiment of the present application, the connecting member 232 is used to increase the rigidity of the first portion 2. The connecting member 232 is also used to further limit the swing arm 4 in the vertical direction, thereby reducing the probability of the swing arm 4 being disengaged from the first chute 21 during rotation. Optionally, the connecting member 232 can be a beam.

[0090] In some embodiments, the connector 232 is strip-shaped. As shown in FIG15 , a first strip groove 416 is provided on a surface of the rotating portion 41 away from the shaft cover 20. The first strip groove 416 extends along the length of the connector 232, and at least a portion of the connector 232 is disposed within the first strip groove 416. The first strip groove 416 is used to accommodate the connector 232, so that at least a portion of the connector 232 is embedded within the rotating portion 41. This reduces the overall thickness of the rotating portion 41 and the connector 232 after the connector 232 and the rotating portion 41 are engaged, further reducing the thickness and volume of the hinge assembly 10 and reducing the space occupied by the hinge assembly 10 within the terminal device. Optionally, the entire connector 232 is disposed within the first strip groove 416. Optionally, the connector 232 is strip-shaped.

[0091] Optionally, each connecting member 232 and the two pressing blocks 231 located at both ends of the connecting member 232 are an integral structure, and the two connecting portions 23 and the first main body portion 22 are an integral structure.

[0092] In the embodiment of the present application, a connector 232 may be provided between the two pressing blocks 231, or a connector 232 may not be provided between the two pressing blocks 231, and this application does not limit this. Specifically, the connector 232 is not provided in the connecting portion 23, and the first strip groove 416 for accommodating the connector 232 does not need to be provided on the rotating portion 41 of the swing arm 4. There is no need to reduce the thickness of the rotating portion 41 to provide an accommodating space for the connector 232. As shown in Figures 10, 12, and 17, while ensuring that the first part 2 has good rigidity and does not increase the overall thickness of the rotating assembly 10, the rotating portion 41 has a larger thickness, which greatly increases the rigidity of the rotating portion 41. As shown in Figures 14 and 18, a connector 232 is provided in the connecting portion 23. The connector 232 can increase the rigidity of the first part 2. The connector 232 can also further limit the swing arm 4 in the vertical direction, reducing the probability of the swing arm 4 detaching from the first slide groove 21 during rotation.

[0093] Optionally, as shown in FIG2 , the first main body 22 is provided with a second through hole 221. The second through hole 221 forms a hollow portion in the middle of the first main body 22, and the adjacent ends of the two rotating parts 41 can be passed through the second through hole 221. The second through hole 221 can reduce the obstruction of the first main body 22 on the two rotating parts 41, increase the sliding range of the two rotating parts 41, and thus increase the rotation range of the swinging part 42.

[0094] In some embodiments, a first recess 413 is defined on a surface of the rotating portion 41 away from the shaft cover 20 . At least a portion of the pressing block 231 is disposed in the first recess 413 . The bottom wall of the first recess 413 includes a first surface 411 .

[0095] In the embodiment of the present application, as shown in Figures 2 and 15, the rotating portion 41 includes two first recesses 413 and two first pressing blocks 231, and part or all of the structure of each first pressing block 231 is placed in one of the first recesses 413. As shown in Figures 2, 14 and 15, the first recess 413 includes a first side wall 4131 and a first bottom wall 4132. The first bottom wall 4132 is in an arcuate shape, and the first bottom wall 4132 includes a first surface 411. In some embodiments, the first surface 411 is formed by the first bottom wall 4132. When at least part of the structure of each pressing block 231 is placed in one of the first recesses 413, the third surface 2311 of the pressing block 231 is arranged opposite to the first bottom wall 4132 of the first recess 413.

[0096] Optionally, as shown in Figure 17, a second convex portion is formed between the two first recesses 413, and the upper surface of the rotating portion 41, that is, the side surface of the rotating portion 41 opposite to the first part 2 is formed by the two first bottom walls 4132 and the upper surface of the second convex portion. The two first recesses 413 make the upper surface of the rotating portion 41 step-shaped.

[0097] In the embodiment of the present application, at least a portion of the structure of the pressing block 231 is placed within the first recess 413. The first sidewall 4131 of the first recess 413 can limit the pressing block 231, reducing the probability of the rotating portion 41 being displaced in a direction parallel to the rotation axis L of the swinging portion 42 during the sliding process of the rotating portion 41 relative to the first chute 21, further increasing the connection stability of the rotating portion 41 with the first part 2 and the second part 3. Optionally, the two distal sides of the two first recesses 413 extend to the edge of the rotating portion 41, that is, the two distal sides of the two first recesses 413 do not have sidewalls, thereby facilitating the sliding connection of the rotating portion 41 with the first chute 21 through the two first recesses 413.

[0098] Optionally, as shown in Figures 2 and 5, when the connecting portion 23 includes a connecting piece 232, there is a gap between the upper surface of the second protrusion 414 and the lower surface of the connecting piece 232, that is, the lower surface of the second protrusion 414 does not contact the upper surface of the connecting piece 232, so that the upper surface of the second protrusion 414 and the lower surface of the connecting piece 232 do not need to have a high flatness, thereby reducing the processing difficulty of the rotating portion 41 and the connecting portion 23, thereby reducing the processing difficulty of the swing arm 4 and the first part 2.

[0099] In some embodiments, a second recess 415 is provided on a side surface of the rotating portion 41 facing the shaft cover 20 , a first protrusion 31 is provided on the second portion 3 , and the first protrusion 31 is placed in the second recess 415 . The bottom wall of the second recess 415 includes a second surface 412 .

[0100] In the embodiment of the present application, as shown in Figures 15, 16, and 18, the second recess 415 includes a second sidewall 41521, a third sidewall 41522, and a second bottom wall 4153 connecting the second sidewall 41521 and the third sidewall 41522. The second bottom wall 4153 is curved. The first protrusion 31 includes a first top wall 312 and fourth and fifth sidewalls 313 and 314 located on either side of the first top wall 312. The first top wall 312 serves as the fifth surface 34 of the second portion 3.

[0101] When the rotating portion 41 is slidably connected to the first sliding groove 21, the second bottom wall 4153 is disposed opposite the first top wall 312, the second side wall 41521 is disposed opposite the fourth side wall 313, and the third side wall 41522 is disposed opposite the fifth side wall 314. The second bottom wall 4153 of the second recess 415 includes a second surface 412. Optionally, the second surface 412 is formed by the second bottom wall 4153. The second bottom walls 4153 of the two second recesses 415 serve as the second surface 412 of the rotating portion 41. When the swing arm 4 is subjected to a downward extrusion force, the second portion 3 exerts an upward supporting force on the rotating portion 41 via the two first protrusions 31. This can disperse the supporting force of the second portion 3 on the rotating portion 41, thereby further reducing the thickness of the swing arm 4 and the second portion 3. In addition, the second side wall 41521 and the third side wall 41522 of the second recess 415 can limit the first protrusion 31, thereby limiting the rotating part 41, reducing the probability of the rotating part 41 being displaced in the direction parallel to the rotation axis L of the swinging part 42 during the sliding process of the rotating part 41 relative to the first slide groove 21, and further increasing the connection stability of the rotating part 41 and the first part 2 and the second part 3.

[0102] Optionally, there is a gap between the second side wall 41521 of the second recess 415 and the fourth side wall 313 of the first protrusion 31, and there is also a gap between the third side wall 41522 of the second recess 415 and the fifth side wall 314 of the first protrusion 31, that is, the second side wall 41521 does not contact the fourth side wall 313, and the third side wall 41522 does not contact the fifth side wall 314, so that the side wall of the second recess 415 and the side wall of the first protrusion 31 do not need to have a high flatness, thereby reducing the processing difficulty of the swing arm 4 and the second part 3.

[0103] In some embodiments, as shown in Figures 2, 15, 16, and 17, a stopper 4151 is provided on the bottom wall of the second recess 415. The stopper 4151 is located on the side of the rotating portion 41 away from the swinging portion 42. A third recess 311 is provided on the surface of the first protrusion 31 facing the second recess 415, and the first stopper 4151 is disposed within the third recess 311.

[0104] In the embodiment of the present application, each rotating portion 41 is provided with a first limiting block 4151, which is placed in the third recess 311. The side wall of the third recess 311 close to the swing portion 42 can limit the first limiting block 4151. Specifically, when the two swing arms 4 are transformed from the expanded state to the closed state, that is, when the shaft assembly 10 is transformed from the expanded state to the closed state, the side of the rotating portion 41 in the swing arm 4 away from the swing portion 42, that is, the front side of the rotating portion 41 slides from the middle part of the second portion 3 to the edge of the second portion 3. The side wall 3111 of the third recess 311 close to the swing portion 42 can block the first limiting block 4151, so that the front side of the rotating portion 41 does not continue to slide after sliding to the edge of the second portion 3. Based on this, the side wall of the third recess 311 close to the swinging part 42 can limit the first limit block 4151, limit the sliding range of the first limit block 4151, thereby limiting the sliding range of the rotating part 41, and reducing the probability of the rotating part 41 detaching from the second part 3 during the sliding process.

[0105] In some implementations, a first through hole 421 is defined on the swing portion 42 . When the at least two swing arms 4 are in the unfolded state, the end portion 33 of the second portion 3 extends into the first through hole 421 along the thickness direction Z of the shaft assembly 10 .

[0106] In the embodiment of the present application, as shown in FIG9 , when the rotating shaft assembly 10 is in the closed state, the two side ends 33 of the second portion 3 along the width direction Y can limit the rotating portion 41, providing a larger sliding range for the rotating portion 41 and reducing the probability of the two rotating portions 41 being separated from the second portion 3 when sliding relative to the second portion 3. In addition, as shown in FIG4 and FIG8 , when the two swing arms 4 are in the expanded state, that is, when the rotating shaft assembly 10 is in the expanded state, the two side ends 33 of the second portion 3 along the width direction X extend into the first through hole 421. The first through hole 421 is used to accommodate the end 33 of the second portion 3, thereby reducing the influence of the end 33 of the second portion 3 on the swing portion 42 during the rotation of the swing arm 4.

[0107] In addition, in the embodiment of the present application, since the second part 3 is not subjected to force at the first surface 411, the stiffness required for the second part 3 at the first surface 411 is relatively small, so that the thickness of the second part 3 is correspondingly reduced. Therefore, the thickness of the end 33 of the second part 3 is also relatively small, which can reduce the horizontal width occupied by the end 33 of the second part 3, thereby further reducing the volume of the shaft assembly 10.

[0108] In some embodiments, the at least one first surface 411 and the at least one second surface 412 are both arc surfaces, and the central axis of the at least one first surface 411 coincides with the central axis of the at least one second surface 412 .

[0109] In the embodiment of the present application, the first surface 411 and the second surface 412 are arcuate surfaces, and the first chute 21 is also an arcuate chute. The arcuate surfaces and the arcuate chute are free of sharp corners, which helps to increase the smoothness of the sliding of the rotating portion 41 relative to the first portion 2 and the second portion 3. In addition, the central axes of the first surface 411 and the second surface 412 coincide with each other, so that the distance between the first surface 411 and the second surface 412 along the thickness direction remains unchanged during the sliding of the rotating portion 41, thereby increasing the stability of the rotating portion 41 during the sliding relative to the first portion 2 and the second portion 3.

[0110] In some embodiments, the thickness of the rotating portion 41 along the radial direction is different.

[0111] In the embodiment of the present application, the first surface 411 and the second surface 412 are arcuate or circular surfaces, and the radial direction of the rotating portion 41 is the extension direction of the radii corresponding to the first surface 411 and the second surface 412. For example, taking the radial direction as the extension direction of the radius corresponding to the first surface 411, each point on the first surface 411 has a corresponding extension direction of the radius, and the extension directions of the radii corresponding to all points intersect with the central axis of the circle corresponding to the first surface 411. As shown in Figures 19 and 20, from the side of the rotating portion 41 closer to the swinging portion 42 to the side of the rotating portion 41 farther from the swinging portion 42, the rotating portion 41 includes, in sequence, a first section 417, a second section 418, and a third section 419. The radial thickness of the first section 417 is different from the radial thickness of the second section 418, and the radial thickness of the third section 419 is different from the radial thickness of the second section 418. Optionally, the radial thickness of the second section 418 is less than the radial thickness of the first section 417 and the third section 419. When the hinge assembly 10 is in the closed state, because the radial thickness of the second section 418 is smaller than the radial thickness of the first section 417 and the third section 419, the second section 418 can provide clearance for other structural components in the terminal device. For example, as shown in FIG20 , the second section 418 can provide clearance for the middle frame 310 of the terminal device's housing 30, thereby allowing for more design space for the middle frame 310.

[0112] Optionally, the radial thickness of the second segment 418 may be smaller than the radial thickness of the first segment 417 and the third segment 419 by cutting off a portion of the structure on the side of the second segment 418 away from the first portion 2 .

[0113] In some embodiments, the first portion 2 and the second portion 3 are connected as an integral structure. The first portion 2 and the second portion 3 can be an integral structure, which facilitates the installation of components in the shaft structure 10 and reduces the structural complexity of the shaft structure 10.

[0114] Optionally, the connection method between the first part 2 and the second part 3 includes at least one of welding connection, adhesive connection, screw connection, and nut connection.

[0115] In the embodiment of the present application, as shown in FIG12 , FIG12 is a front view of the rotating shaft assembly 10 in FIG2 . The first part 2 and the third part 3 have a connection area 25 , and the first part 2 and the second part 3 are fixed at the connection area 25 by welding or dispensing glue. In addition, the first part 2 and the second part 3 are provided with a positioning hole 26 . In the process of connecting the first part 2 and the second part 3 , a fastener such as a screw can be first inserted through the positioning hole 26 to fix the first part 2 and the second part 3 . Then, the first part 2 and the second part 3 are connected at the connection area 25 by dispensing glue or welding. Finally, the fastener is removed. The positioning hole 26 and the fastener are used to increase the welding accuracy and bonding accuracy between the first part 2 and the second part 3 .

[0116] Optionally, the first part 2 and the second part 3 may also be connected by fasteners such as bolts.

[0117] An embodiment of the second aspect of the present application provides a terminal device, as shown in Figure 1 , comprising a housing 30, a flexible display 40, and the hinge assembly 10 described in any of the above embodiments. The flexible display 40 is connected to the housing 30 and includes a bending region 401. The hinge assembly 10 is located on the non-display side of the flexible display 40, and the hinge assembly 10 is disposed corresponding to the bending region 401.

[0118] In the embodiment of the present application, the terminal device can be a terminal device with a folding screen effect, such as a mobile phone, a tablet, a laptop computer, a watch, etc. The terminal device with a folding screen effect achieves a closed state and a flattened state through the hinge assembly 10. When the terminal device is in the unfolded state, the swinging parts 42 of the two swinging arms 4 in the hinge assembly 10 are placed horizontally to maintain the flatness of the surface of the flexible display screen 40. When the terminal device is in the folded state, the swinging parts 42 of the two swinging arms 4 in the hinge assembly 10 are arranged vertically to make the flexible display screen 40 bend. Among them, folding terminal devices include but are not limited to mobile phones, tablet computers, electronic paper, etc.

[0119] In some embodiments, the terminal device is a foldable screen terminal device.

[0120] In the hinge assembly 10 included in the terminal device provided in the embodiment of the present application, because at least a portion of the first surface 411 and the second surface 412 are staggered along the rotation axis L of the swinging portion 42, that is, at least one first surface 411 and at least one second surface 412 are located at different positions on the rotating portion 41, when the rotating portion 41 is subjected to an external force, the force-bearing surface of the rotating portion 41 relative to the first portion 2 and the force-bearing surface of the rotating portion 41 relative to the second portion 3 are located at different positions. This results in a relatively dispersed force on the rotating portion 41, the first portion 2, and the second portion 3. This results in a relatively small force on the rotating portion 41 on the first surface 411 and the second surface 412, and also a relatively small force on the side surface of the first portion 2 opposite the first surface 411 and the side surface of the second portion 3 opposite the second surface 412. Specifically, at the first surface 411, since the second portion 3 is not subjected to force in this area, the required stiffness of the second portion 3 at the first surface 411 is relatively small, and the thickness of the second portion 3 can be reduced accordingly. At the second surface 412, since the first portion 2 is not subjected to force in this area, the required rigidity at the second surface 412 is relatively low, and the thickness of the first portion 2 can be reduced accordingly. Therefore, there is no need to increase the rigidity of the hinge assembly 10 by increasing the thickness of the swing arm 4, the first portion 2, and the second portion 3. This reduces the thickness and volume of the hinge assembly 10, thereby reducing the space occupied by the hinge assembly 10 within the terminal device.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments of the present application, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A rotating shaft assembly, characterized in that: include: a base, the base comprising a first portion and a second portion fixedly connected, a first sliding groove being formed between the first portion and the second portion; a swing arm, the swing arm comprising a rotating portion and a swinging portion, the rotating portion being slidably connected to the first sliding groove, and when the rotating portion slides relative to the first sliding groove, the swinging portion rotates relative to the base; The rotating portion includes at least one first surface and at least one second surface, the at least one first surface is arranged opposite to a side surface of the first portion, and the at least one second surface is arranged opposite to a side surface of the second portion. Along the rotation axis of the swinging portion, at least parts of the first surface and the second surface are staggered.

2. The shaft assembly according to claim 1, wherein: The number of the swing arms is at least two, and the at least two swing arms include a first swing arm and a second swing arm. The swing portion of the first swing arm and the swing portion of the second swing arm are arranged on both sides of the base.

3. The shaft assembly according to claim 1 or 2, characterized in that: The rotating shaft assembly further includes a shaft cover, which is connected to the base.

4. The shaft assembly according to claim 3, wherein: The rotating portion includes two first surfaces, and along the rotation axis of the swinging portion, the at least one second surface is located between the two first surfaces.

5. The shaft assembly according to claim 4, wherein: The first part includes a first main body and two connecting parts located on both sides of the first main body, each connecting part includes two pressing blocks, each first surface is arranged opposite to the third surface of a pressing block, and the third surface is a side surface of the pressing block facing the second part.

6. The shaft assembly according to claim 5, characterized in that: The connecting portion further includes a connecting piece, and the connecting piece connects the two pressing blocks.

7. The shaft assembly according to claim 6, wherein: The connecting member is strip-shaped, and a first strip groove is provided on a surface of the rotating portion away from the shaft cover. The first strip groove extends along the length direction of the connecting member, and at least part of the structure of the connecting member is placed in the first strip groove.

8. The rotating shaft assembly according to any one of claims 5 to 7, characterized in that: A first recess is provided on a side surface of the rotating portion away from the rotation axis of the swinging portion. At least a portion of the pressing block is disposed in the first recess. The bottom wall of the first recess includes the first surface.

9. The rotating shaft assembly according to any one of claims 1 to 7, characterized in that: A second recess is provided on one side surface of the rotating portion facing the rotation axis of the swinging portion, a first convex portion is provided on the second portion, at least part of the first convex portion extends into the second recess, and the bottom wall of the second recess includes the second surface.

10. The shaft assembly according to claim 9, wherein: A first limit block is provided on the bottom wall of the second recess, and the first limit block is located on a side of the rotating part away from the swinging part; A third recess is provided on a surface of the first protrusion facing the second recess, and at least a portion of the first limiting block is disposed in the third recess.

11. The shaft assembly according to claim 2, wherein: A first through hole is provided on the swing portion. When at least two of the swing arms are in an unfolded state, the end of the second portion extends into the first through hole along the thickness direction of the rotating shaft assembly.

12. The shaft assembly according to claim 2, wherein: The swing portion of the first swing arm and the swing portion of the second swing arm are symmetrically arranged on both sides of the base.

13. The rotating shaft assembly according to any one of claims 1 to 12, characterized in that: The first surface and the second surface are both arc-shaped surfaces.

14. The rotating shaft assembly according to any one of claims 1 to 12, characterized in that: The first surface and the second surface are both arc surfaces, and the central axis of the first surface coincides with the central axis of the second surface.

15. The rotating shaft assembly according to claim 13 or 14, characterized in that: The thickness of the rotating part along the radial direction is different.

16. The rotating shaft assembly according to any one of claims 1 to 15, characterized in that: At least a portion of the structure of the rotating portion is placed in the first sliding groove.

17. The rotating shaft assembly according to any one of claims 1 to 16, characterized in that: The first part and the second part are an integral structure.

18. The rotating shaft assembly according to any one of claims 1 to 17, characterized in that: The connection method between the first part and the second part includes at least one of welding connection, adhesive connection, screw connection, and nut connection.

19. A terminal device, characterized in that: The terminal device includes a shell, a flexible display screen and the hinge assembly according to any one of claims 1 to 18, the flexible display screen is connected to the shell, the flexible display screen includes a bending area, the hinge assembly is located on the non-display side of the flexible display screen, and the hinge assembly is arranged corresponding to the bending area.

20. The terminal device according to claim 19, characterized in that The terminal device is a foldable screen terminal device.

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