A rotating shaft assembly and electronic equipment

Abstract

The present application provides a hinge assembly and an electronic device, which relates to the technical field of electronic devices. The hinge assembly includes a shaft seat and a flexible display screen support plate assembly for supporting the electronic device. The support plate assembly includes at least main support plates arranged on both sides of the shaft seat along the width direction of the hinge assembly. The elastic member is located between the main support plate and the shaft seat along the width direction of the hinge assembly. The main support plate is rotatably connected to the shaft seat through the elastic member. When the main support plate rotates along a first direction to switch the hinge assembly from an unfolded state to a first folded state, the elastic member stretches to keep the main support plate away from the shaft seat. When the main support plate rotates along a second direction to switch the hinge assembly from an unfolded state to a second folded state, the elastic member contracts to keep the main support plate close to the shaft seat. In the process of folding the electronic device inward and outward, the support plate assembly adjusts its width through the elastic member to match the arc length of the flexible display screen.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a shaft assembly and electronic equipment. Background Art

[0002] With the development of science and technology, foldable electronic devices have been widely used by users. Foldable electronic devices have two use states: unfolded and folded. Current foldable electronic devices can only be folded inwards or outwards, which affects the user experience. Summary of the invention

[0003] The purpose of the present application is to provide a hinge assembly and an electronic device, so that the hinge assembly can be folded inward and outward, and the width of the hinge assembly can be adjusted to prevent the flexible display screen from being squeezed or stretched.

[0004] The first aspect of an embodiment of the present application provides a hinge assembly, including an axle seat and a support plate assembly, wherein the support plate assembly is used to support a flexible display screen of an electronic device, and the support plate assembly at least includes main support plates arranged on both sides of the axle seat along the width direction of the hinge assembly, wherein the hinge assembly also includes an elastic member, wherein the elastic member is located between the main support plate and the axle seat along the width direction of the hinge assembly, and the main support plate is rotatably connected to the axle seat through the elastic member, and when the main support plate rotates along a first direction relative to the axle seat, so that the hinge assembly switches from an expanded state to a first folded state, the elastic member stretches to move the main support plate away from the axle seat, and when the main support plate rotates along a second direction relative to the axle seat, so that the hinge assembly switches from an expanded state to a second folded state, the elastic member contracts to move the main support plate closer to the axle seat, and the first direction is opposite to the second direction.

[0005] When the electronic device switches from the unfolded state to the first folded state, the elastic member can be stretched as the main support plate rotates. As the length of the elastic member increases, the width of the shaft assembly in the first folded state increases, which is convenient for matching with the arc length of the bending zone of the flexible display screen. At this time, the flexible display screen will not be squeezed, reducing the risk of the flexible display screen being broken during the folding process, thereby improving the reliability of the electronic device. When the electronic device switches from the unfolded state to the second folded state, the elastic member can be compressed as the main support plate rotates. As the length of the elastic member decreases, the width of the shaft assembly in the second folded state is reduced, so that the shaft assembly can be accommodated in the bending zone of the flexible display screen, and the bending zone of the flexible display screen will not be pulled. Similarly, the risk of the flexible display screen being broken during the folding process is reduced, thereby improving the reliability of the electronic device.

[0006] In a possible embodiment, when the hinge assembly is in the first folded state, a first space is provided between the main support plate and the shaft seat for accommodating a bending zone of the flexible display screen; when the hinge assembly is in the second folded state, a second space is provided between the main support plate and the shaft seat, and the bending zone of the flexible display screen is provided for covering a side of the main support plate and the shaft seat facing away from the second space; an arc length of the first space is greater than an arc length of the second space.

[0007] The hinge assembly in the first folded state has a first space, so that the hinge assembly provides sufficient accommodation space for the bending zone of the flexible display screen, reducing the possibility of the hinge assembly squeezing the bending zone of the flexible display screen. The hinge assembly in the second folded state has a second space, and since the arc length of the second space is less than the arc length of the first space, the hinge assembly will not pull the bending zone of the flexible display screen, reducing the risk of the flexible display screen being broken during the folding process.

[0008] In a possible implementation, the elastic member includes a hollow portion; the hollow portion penetrates the elastic member along a thickness direction of the elastic member.

[0009] The hollow portion provides a deformation space for the elastic member to increase the deformation amount of the elastic member to achieve the change of the width of the rotating shaft assembly.

[0010] In a possible embodiment, the elastic member includes a first elastic portion, a second elastic portion and a third elastic portion; the hollow portion is arranged on the first elastic portion, the first elastic portion is connected to the axle seat through the second elastic portion, and the first elastic portion is connected to the main support plate through the third elastic portion.

[0011] Among them, the second elastic part and the third elastic part can have an "I"-shaped structure to achieve a stable and reliable connection between the first elastic part and the shaft seat and the main support plate.

[0012] In a possible implementation, a plurality of the elastic members are connected between the main support plate and the shaft seat along the length direction of the rotating shaft assembly.

[0013] Providing a plurality of elastic members can improve the stability of the connection between the main support plate and the shaft seat.

[0014] In a possible embodiment, the support plate assembly also includes a secondary support plate arranged between the main support plate and the shaft seat along the width direction of the rotating shaft assembly; the elastic member is arranged on both sides of the secondary support plate along the width direction of the rotating shaft assembly, and one end of the secondary support plate is rotatably connected to the main support plate on the same side through the elastic member; the other end of the secondary support plate is rotatably connected to the shaft seat through the elastic member.

[0015] By providing a secondary support plate, the support effect of the shaft assembly on the flexible display screen is improved, and the possibility of the flexible display screen collapsing toward the side close to the shaft assembly is reduced, which is beneficial to extending the service life of the flexible display screen and improving the stability and reliability of the use of the flexible display screen. At the same time, the number of elastic members in the width direction of the shaft assembly is increased. When the number of elastic members increases, the overall elongation and compression of the elastic members increase, that is, the change in the width dimension of the shaft assembly increases, which is beneficial to meet the use needs of the flexible display screen.

[0016] In a possible embodiment, the rotating shaft assembly also includes brackets arranged on both sides of the shaft seat along the width direction of the rotating shaft assembly, and a push rod assembly arranged on both sides of the shaft seat along the width direction of the rotating shaft assembly; the push rod assembly includes a first push rod, one end of the first push rod is rotatably connected to the bracket on the same side, and the other end of the first push rod is rotatably connected to the shaft seat, and the first push rod can also slide relative to the shaft seat along the length direction of the rotating shaft assembly.

[0017] When the electronic device is in the first folding state and the second folding state, the first push rod can support and limit the bracket. Since the main support plate is connected to the bracket, it also limits and constrains the main support plate, and determines the position of the main support plate in the first folding state and the second folding state, which makes it easier for the shape of the hinge assembly to match the shape of the flexible display screen, reducing the possibility of the flexible display screen being squeezed or stretched. At the same time, under the action of the first push rod, the main support plate can reliably support the flexible display screen, so that the main support plate can be maintained in the current position to improve the stability of the flexible display screen.

[0018] In a possible embodiment, the shaft seat is provided with a guide rail extending along the length direction of the rotating shaft assembly and a movable member connected to the guide rail; one end of the first push rod is rotatably connected to the movable member; when the rotating shaft assembly switches between the first folded state, the unfolded state and the second folded state, the movable member can move along the guide rail to change the angle between the first push rod and the width direction of the rotating shaft assembly.

[0019] By providing the guide rail, the stability of the moving member in the length direction of the rotating shaft assembly is improved, thereby improving the stability of the movement of the first push rod and improving the movement accuracy of the rotating shaft assembly.

[0020] In a possible embodiment, when the shaft assembly is in the first folded state, a first angle is formed between the first push rod and the width direction of the shaft assembly; when the shaft assembly is in the second folded state, a second angle is formed between the first push rod and the width direction of the shaft assembly; the first angle is smaller than the second angle.

[0021] When the electronic device switches from the unfolded state to the first folded state, the first push rod can move along the length direction of the shaft assembly to reduce the angle between the first push rod and the width direction of the shaft assembly, and increase the length of the projection of the first push rod in the width direction of the shaft assembly, so that the bracket can move in a direction away from the shaft seat, increase the width of the shaft assembly, and then match the arc length of the flexible display screen in the first folded state. Conversely, when the electronic device switches from the unfolded state to the second folded state, the first push rod can move along the length direction of the shaft assembly to increase the angle between the first push rod and the width direction of the shaft assembly, and reduce the length of the projection of the first push rod in the width direction of the shaft assembly, so that the first bracket can move in a direction close to the shaft seat, reduce the width of the shaft assembly, and then match the arc length of the flexible display screen in the second folded state.

[0022] In a possible implementation manner, the first push rod has a first spherical portion and a second spherical portion at both ends respectively; the first spherical portion is rotatably connected to the bracket; and the second spherical portion is rotatably connected to the moving member.

[0023] By providing the first spherical portion and the second spherical portion, the first push rod can rotate smoothly and steadily between the bracket and the shaft seat.

[0024] In a possible embodiment, the support plate assembly also includes a secondary support plate arranged between the main support plate and the shaft seat along the width direction of the rotating shaft assembly; the push rod assembly also includes a second push rod; one end of the second push rod is rotatably connected to the secondary support plate on the same side, and the other end of the second push rod is rotatably connected to the shaft seat and can slide relative to the shaft seat along the length direction of the rotating shaft assembly.

[0025] The second push rod supports and limits the auxiliary support plate, and determines the position of the auxiliary support plate in the first folded state and the second folded state, so as to facilitate the matching of the shape of the rotating shaft assembly with the shape of the flexible display screen. At the same time, under the support of the second push rod, the auxiliary support plate is maintained in the current position, thereby reliably supporting the flexible display screen and improving the stability of the flexible display screen.

[0026] In a possible embodiment, the first push rod is used to support the bracket on the same side, and through the bracket, the main support plate connected to the bracket is limited to the position of the first folded state or the position of the second folded state; the second push rod is used to support the secondary support plate on the same side, and the secondary support plate is limited to the position of the first folded state or the position of the second folded state; in the first folded state, the main support plate, the secondary support plate and the axle seat form the first space, and in the second folded state, the main support plate, the secondary support plate and the axle seat form the second space.

[0027] The second push rod can provide a supporting force for the auxiliary support plate in a direction away from the flexible display screen, and make the auxiliary support plate stably maintain in a preset position to provide sufficient accommodation space for the bending zone of the flexible display screen. The shape of the space enclosed by the support plate, the auxiliary support plate and the shaft seat matches the shape of the bending zone of the flexible display screen to ensure that the flexible display screen will not be squeezed or stretched. At the same time, since the shape of each support plate is compatible with the shape of the flexible display screen, the reliability of the support plate's support for the flexible display screen is improved, and the possibility of the flexible display screen collapsing downward when pressed is reduced, thereby improving the user's operating experience.

[0028] In a possible embodiment, the shaft seat is provided with a mating piece, and the mating piece is fixedly connected to the movable piece; the mating piece is provided with a mating groove along the length direction of the rotating shaft assembly, and one end of the second push rod is rotatably connected in the mating groove, and when the rotating shaft assembly switches between the first folding state, the unfolding state and the second folding state, the second push rod can move along the mating groove to change the angle between the second push rod and the width direction of the rotating shaft assembly.

[0029] The first push rod is connected to the second push rod through a moving part and a matching part. When the first push rod moves along the length direction of the shaft assembly, the second push rod also moves to improve the movement accuracy of the entire shaft assembly, thereby improving the reliability of the shaft assembly.

[0030] In a possible embodiment, when the shaft assembly is in the first folded state, a third angle is formed between the second push rod and the width direction of the shaft assembly; when the shaft assembly is in the second folded state, a fourth angle is formed between the second push rod and the width direction of the shaft assembly; the third angle is smaller than the fourth angle.

[0031] When the electronic device switches from the unfolded state to the first folded state, the second push rod can move along the length direction of the shaft assembly to reduce the angle between the second push rod and the width direction of the shaft assembly, and increase the length of the projection of the second push rod in the width direction of the shaft assembly, so that the first auxiliary support plate can move in a direction away from the shaft seat, so that the width of the shaft assembly increases, thereby matching the arc length of the flexible display screen in the first folded state. When the electronic device switches from the unfolded state to the second folded state, the second push rod can also move along the length direction of the shaft assembly to increase the angle between the second push rod and the width direction of the shaft assembly, and reduce the length of the projection of the second push rod in the width direction of the shaft assembly, so that the first auxiliary support plate can move in a direction close to the shaft seat, even if the width of the shaft assembly is reduced, thereby matching the arc length of the flexible display screen in the second folded state.

[0032] In a possible implementation, the second push rod has a third spherical portion and a fourth spherical portion at both ends respectively; the third spherical portion is rotatably connected to the auxiliary support plate; the fourth spherical portion is rotatably disposed in a matching groove, and the fourth spherical portion can move along the matching groove.

[0033] By providing the third spherical portion and the fourth spherical portion, the second push rod can rotate smoothly and steadily between the auxiliary support plate and the shaft seat.

[0034] In a possible embodiment, the shaft assembly further includes brackets arranged on both sides of the shaft seat along the width direction of the shaft assembly, and the brackets are rotatably connected to the shaft seat; the brackets are rotatably connected to the main support plate on the same side through at least one flexible member.

[0035] By providing the flexible member, a rotatable connection relationship between the bracket and the main support plate is achieved, and the stability and reliability of the connection between the bracket and the main support plate are improved.

[0036] In a possible implementation, a plurality of the flexible members are disposed between the bracket and the main support plate on the same side in the length direction of the shaft assembly.

[0037] The provision of multiple flexible parts is helpful to improve the stability and reliability of the connection between the main support plate and the bracket.

[0038] In a possible embodiment, the bracket includes a first main body portion and a second main body portion; the flexible member is accommodated in the first main body portion; the second main body portion is connected to the first main body portion, and the thickness of the second main body portion gradually decreases in the direction away from the first main body portion; when the hinge assembly switches between the first folding state and the second folding state, the main support plate can be rotated toward the side close to the bracket until the main support plate abuts against the second main body portion.

[0039] In the first folding state, the main support plate abuts against the bracket, so that the main support plate is tilted to the side away from the flexible display screen, thereby matching the shape of the bending zone of the flexible display screen, improving the supporting effect of the main support plate on the flexible display screen, and providing a storage space for the bending zone of the flexible display screen, reducing the possibility of the main support plate squeezing the flexible display screen, so as to ensure the normal use of the flexible display screen. When the electronic device is in the second folding state, the hinge assembly is accommodated in the bending zone of the flexible display screen. At this time, the main support plate abuts against the bracket, so that the main support plate is tilted to the side away from the flexible display screen, thereby matching the shape of the bending zone of the flexible display screen, so as to improve the supporting effect on the flexible display screen and reduce the possibility of the flexible display screen being pulled.

[0040] In a possible embodiment, the rotating shaft assembly also includes brackets arranged on both sides of the shaft seat along the width direction of the rotating shaft assembly, the brackets are rotatably connected to the shaft seat, and the brackets are connected to a swing arm group; the shaft seat is provided with a sliding assembly, and the swing arm group is rotatably connected to the sliding assembly, and when the swing arm group rotates relative to the sliding assembly, the sliding assembly can slide relative to the shaft seat.

[0041] By arranging a sliding assembly on the axle seat that can slide relative to the axle seat, it is helpful to provide sufficient sliding stroke for the swing arm group so that each swing arm group can rotate inward and outward. In other words, by arranging the sliding assembly, the rotation angle of each swing arm is increased, thereby realizing the inward and outward folding of the electronic device.

[0042] On the other hand, the sliding assembly can adjust the distance between the swing arm and the shaft seat. For example, when the electronic device switches from the unfolded state to the first folded state, the sliding assembly can extend away from the shaft seat, thereby increasing the distance between the swing arm and the shaft seat, that is, increasing the overall width of the hinge assembly, so as to facilitate the adaptation of the hinge assembly to the flexible display screen in the first folded state, thereby reducing the possibility of the hinge assembly squeezing the flexible display screen in the first folded state.

[0043] In a possible embodiment, the sliding assembly includes at least a first sliding member, the first sliding member is provided with a first sliding groove, the swing arm group includes a connecting portion, and the connecting portion is slidably arranged in the first sliding groove; the axle seat has an installation space, the first sliding member is located in the installation space, and the first sliding member can extend out of the installation space during the rotation of the bracket along the first direction.

[0044] When the swing arm assembly rotates relative to the shaft seat along a first direction, the first sliding member can extend outward from the installation space, so that the distance between the connecting part and the shaft seat along the width direction of the rotating shaft assembly includes the sliding distance of the connecting part relative to the first sliding member and the distance that the first sliding member extends outward from the installation space of the shaft seat, thereby increasing the distance between the connecting part and the shaft seat along the width direction of the rotating shaft assembly, and there is no need to increase the distance between the connecting part and the shaft seat along the width direction of the rotating shaft assembly by increasing the sliding distance of the connecting part relative to the first sliding member, thereby ensuring that the connecting part and the first slide groove are always in contact with each other, avoiding the first main swing arm from being unable to continue rotating due to the separation of the connecting part from the first slide groove, and allowing the electronic device to switch from the unfolded state to the first folded state.

[0045] In a possible implementation manner, a first guide groove is provided in the installation space; the first sliding member has a first guide protrusion, and the first guide protrusion is located in the first guide groove and can slide along the first guide groove.

[0046] The first guide protrusion cooperates with the first guide groove to guide the movement of the first sliding member, thereby improving the stability and reliability of the sliding of the first sliding member. The first guide groove may be an arc groove, and the first guide protrusion may be an arc protrusion, so that the first sliding member can slide along an arc track in the installation space.

[0047] In a possible embodiment, the swing arm group includes a main body, one end of the main body is connected to the connecting part, and the other end is connected to the bracket; the first sliding member has a first notch, and the installation space has a second notch connected to the first notch, and the first notch and the second notch are used to avoid the main body.

[0048] The first notch and the second notch can avoid the main body of the swing arm group, reducing the possibility of interference between the swing arm group and the first sliding member and the shaft seat, so as to achieve smooth rotation of the swing arm group.

[0049] In a possible embodiment, the sliding assembly also includes a second sliding member, which is slidably disposed in the installation space; the second sliding member is provided with a second sliding groove, and the first sliding member is slidably disposed in the first sliding groove, and when the bracket rotates along the first direction, the second sliding member can extend out of the installation space.

[0050] The first sliding member and the second sliding member can form a retractable nested structure. When the electronic device switches from the unfolded state to the first folded state, the second sliding member can extend from the installation space, and the first sliding member can extend from the second sliding member, thereby further increasing the sliding stroke of the swing arm to meet the rotation requirements of the swing arm. At the same time, when the first sliding member and the second sliding member are both in the extended state, the distance between the swing arm and the shaft seat is further increased, thereby increasing the overall width of the rotating shaft assembly.

[0051] In a possible embodiment, during the process of switching the rotating shaft assembly from the expanded state to the second folded state, the bracket rotates along the second direction, and the connecting portion slides from the first end of the first slide groove to the direction close to the second end of the first slide groove; during the process of switching the rotating shaft assembly from the expanded state to the first folded state, the bracket rotates along the first direction, and the connecting portion slides from the first end of the first slide groove to the direction away from the second end of the first slide groove, and the first sliding member slides along the second slide groove to the side away from the shaft seat, and the second sliding member can extend out of the installation space.

[0052] The above design realizes the rotation of the swing arm group in the first direction and the second direction, so that the electronic device can be folded inwards and outwards at the same time.

[0053] In a possible embodiment, the shaft assembly includes a shaft seat and a decorative panel assembly, the shaft seat is rotatably connected with brackets on both sides along the width direction of the shaft assembly; the decorative panel assembly includes a first decorative panel, a second decorative panel and a third decorative panel; the third decorative panel is connected to the shaft seat along the thickness direction of the shaft assembly, the first decorative panel and the second decorative panel are respectively located on both sides of the third decorative panel along the width direction of the shaft assembly, and are connected to the corresponding brackets along the thickness direction of the shaft assembly; wherein the first decorative panel and the third decorative panel, as well as the second decorative panel and the third decorative panel are rotatably connected via elastic connecting members.

[0054] The elastic connecting piece connects the first decorative panel, the second decorative panel and the third decorative panel into a whole. That is to say, the three decorative panels adopt an integrated design. This design eliminates the need for relative positioning of the first decorative panel, the second decorative panel and the third decorative panel during reassembly, thereby reducing the difficulty of assembling the shaft assembly, simplifying the assembly steps of the shaft assembly and reducing the production cost of the shaft assembly. At the same time, the relative position accuracy among the first decorative panel, the second decorative panel and the third decorative panel is improved, thereby improving the matching accuracy of the shaft assembly.

[0055] In a possible implementation, the elastic connector includes at least one elastic unit, and the elastic unit has a hollow area.

[0056] The hollow area provides a deformation space for the formation of the elastic connecting member, so as to increase the deformation amount of the elastic connecting member.

[0057] In a possible embodiment, the elastic connecting member includes a first elastic layer and a second elastic layer along its own thickness direction, and the first elastic layer and the second elastic layer are connected; wherein the first elastic layer and the second elastic layer each include at least one elastic unit, and the hollow area of ​​the first elastic layer and the hollow area of ​​the second elastic layer are staggered.

[0058] By dividing the elastic connector into a two-layer structure of a first elastic layer and a second elastic layer, the two elastic layers can respectively shield each other's hollow areas, so that there is no gap connecting the inside of the shaft assembly with the outside of the shaft assembly on the elastic connector, thereby improving the protective effect of the elastic connector on the internal structure of the shaft assembly and improving the overall refinement of the shaft assembly. On the other hand, the above design allows the hollow areas of the two elastic layers to still provide elastic deformation space for the corresponding elastic units, thereby ensuring the overall elastic deformation of the elastic connector.

[0059] In a possible embodiment, the first decorative panel includes a first plate body and a second plate body; the second decorative panel includes a third plate body and a fourth plate body; the third decorative panel includes a fifth plate body and a sixth plate body; along the width direction of the rotating shaft assembly, the first plate body, the third plate body and the fifth plate body are connected by a first elastic layer; the second plate body, the fourth plate body and the sixth plate body are connected by a second elastic layer; along the thickness direction of the rotating shaft assembly, the first plate body and the second plate body, the third plate body and the fourth plate body, the fifth plate body and the sixth plate body, the first elastic layer and the second elastic layer are all connected by an adhesive layer.

[0060] Each decorative panel has a multi-layer structure including an adhesive layer. After curing, the adhesive layer can provide a certain strength for the decorative panel, thereby improving the stability of the decorative panel structure, which is beneficial to extending the service life of the decorative panel and improving the overall stability and reliability of the shaft assembly.

[0061] In a possible implementation, the elastic unit includes two first elastic segments extending along its length direction and two second elastic segments extending along its width direction, and the first elastic segments and the second elastic segments are connected to enclose the hollow area.

[0062] The elastic unit has a "mouth"-shaped structure, which is beneficial to improving the stability and reliability of the elastic connector's own structure and is beneficial to the elastic deformation of the elastic connector.

[0063] In a possible embodiment, the elastic connector includes a plurality of the elastic units; the elastic units are continuously arranged along the length direction of the rotating shaft assembly; the elastic units are spaced apart along the width direction of the rotating shaft assembly, and adjacent elastic units are connected by a third elastic segment.

[0064] Along the width direction of the hinge assembly, the intervals between adjacent elastic units provide space for the elastic units to deform in their own width direction, thereby increasing the deformation of each elastic unit, so that the elastic connector can be extended or compressed as the width of the hinge assembly changes, thereby enabling the electronic device to switch between the unfolded state, the first folded state, and the second folded state.

[0065] A second aspect of an embodiment of the present application provides a shaft assembly, comprising a shaft seat and a decorative panel assembly, wherein the shaft seat is rotatably connected to brackets on both sides along the width direction of the shaft assembly; the decorative panel assembly comprises a first decorative panel, a second decorative panel and a third decorative panel; the third decorative panel is connected to the shaft seat along the thickness direction of the shaft assembly, the first decorative panel and the second decorative panel are respectively located on both sides of the third decorative panel along the width direction of the shaft assembly, and are connected to the corresponding brackets along the thickness direction of the shaft assembly; wherein the first decorative panel and the third decorative panel, as well as the second decorative panel and the third decorative panel, are rotatably connected via elastic connecting members.

[0066] In a possible implementation, the elastic connector includes at least one elastic unit, and the elastic unit has a hollow area.

[0067] In a possible embodiment, the elastic connecting member includes a first elastic layer and a second elastic layer along its own thickness direction, and the first elastic layer and the second elastic layer are connected; wherein the first elastic layer and the second elastic layer each include at least one elastic unit, and the hollow area of ​​the first elastic layer and the hollow area of ​​the second elastic layer are staggered.

[0068] In a possible embodiment, the first decorative panel includes a first plate body and a second plate body; the second decorative panel includes a third plate body and a fourth plate body; the third decorative panel includes a fifth plate body and a sixth plate body; along the width direction of the rotating shaft assembly, the first plate body, the third plate body and the fifth plate body are connected by a first elastic layer; the second plate body, the fourth plate body and the sixth plate body are connected by a second elastic layer; along the thickness direction of the rotating shaft assembly, the first plate body and the second plate body, the third plate body and the fourth plate body, the fifth plate body and the sixth plate body, the first elastic layer and the second elastic layer are all connected by an adhesive layer.

[0069] In a possible implementation, the elastic unit includes two first elastic segments extending along its length direction and two second elastic segments extending along its width direction, and the first elastic segments and the second elastic segments are connected to enclose the hollow area.

[0070] In a possible embodiment, the elastic connector includes a plurality of the elastic units; the elastic units are continuously arranged along the length direction of the rotating shaft assembly; the elastic units are spaced apart along the width direction of the rotating shaft assembly, and adjacent elastic units are connected by a third elastic segment.

[0071] A third aspect of an embodiment of the present application provides an electronic device, comprising a hinge assembly, a first shell, a second shell and a flexible display screen, wherein the hinge assembly is the hinge assembly described in any one of the above items; the first shell and the second shell are respectively connected to both sides of the hinge assembly along the width direction; the flexible display screen covers one side of the hinge assembly, the first shell and the second shell along the thickness direction, and is connected to the first shell and the second shell; when the electronic device is in a first folding state, the flexible display screen is accommodated between the first shell and the second shell; when the electronic device is in a second folding state, the flexible display screen is exposed on the outside of the first shell and the second shell.

[0072] The electronic device has the above-mentioned hinge assembly, so that the electronic device has the functions of folding outward and inward at the same time, and ensures that the flexible display screen is not squeezed or pulled, thereby improving the reliability of the flexible display screen and extending the service life of the flexible display screen.

[0073] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1 A schematic diagram of an electronic device in an unfolded state provided by an embodiment of the present application;

[0075] Figure 2 This is a schematic diagram of an electronic device in a first folding state according to an embodiment of the present application;

[0076] Figure 3 It is a schematic diagram of an electronic device in a second folding state according to an embodiment of the present application;

[0077] Figure 4 It is a schematic diagram of an electronic device switching from an unfolded state to a first folded state and a second folded state in one embodiment of the present application;

[0078] Figure 5 This is a schematic diagram of a rotating shaft assembly in one embodiment of the present application;

[0079] Figure 6 This is an exploded schematic diagram of a rotating shaft assembly in one embodiment of the present application;

[0080] Figure 7 for Figure 6 A magnified view of part I;

[0081] Figure 8 This is a partial exploded schematic diagram of a rotating shaft assembly in one embodiment of the present application;

[0082] Fig. 9 A partial cross-sectional view of a rotating shaft assembly in one embodiment of the present application;

[0083] Fig.10 This is a schematic diagram of a rotating shaft assembly in another embodiment of the present application;

[0084] Fig.11 for Fig.10 Enlarged view of part II;

[0085] Fig.12 This is a schematic diagram of a rotating shaft assembly in another embodiment of the present application;

[0086] Fig.13 This is a schematic diagram of the connection between the first main support plate and the first bracket in one embodiment of the present application;

[0087] Fig.14 It is a schematic diagram of a bending area of ​​a flexible display screen of an electronic device in a first folded state and a first bracket, a first main support plate, a second bracket, and a second main support plate in one embodiment of the present application;

[0088] Fig.15 This is a partial schematic diagram of a rotating shaft assembly in another embodiment of the present application;

[0089] Fig.16 A schematic diagram of a flexible display screen and various support plates in a first folded state in one embodiment of the present application;

[0090] Fig.17 It is a partial schematic diagram of a rotating shaft assembly in the related art;

[0091] Fig.18 It is a schematic diagram of a first decorative plate, a second decorative plate and a third decorative plate in the related art;

[0092] Fig.19 This is a schematic diagram of a rotating shaft assembly in another embodiment of the present application;

[0093] Fig. 20 This is a schematic diagram of an elastic connector in one embodiment of the present application;

[0094] Fig.21 This is a partial schematic diagram of an elastic connector in another embodiment of the present application;

[0095] Fig. 22 It is a partial schematic diagram of a rotating shaft assembly in another embodiment of the present application.

[0096] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0097] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0098] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0099] In the description of this specification, it should be understood that the directional words such as "upper" and "lower" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0100] With the development of science and technology, foldable electronic devices have been widely used by users. Foldable electronic devices have two use states: unfolded and folded. When the current foldable electronic devices switch between the unfolded state and the folded state, they can only be folded in one direction, that is, it can be understood that the foldable electronic devices can only be folded inwards or outwards, which affects the user experience.

[0101] In response to the above problems, an embodiment of the present application provides an electronic device, which may be any device with a foldable function, such as a mobile phone, a tablet computer, a laptop computer, a wearable device, etc. The embodiment of the present application does not impose any special restrictions on the specific form of the above electronic device.

[0102] The following is a specific description taking a foldable mobile phone as an example of an electronic device.

[0103] like Figure 1 As shown, Figure 1 A schematic diagram of an electronic device 100 in an unfolded state provided by an embodiment of the present application. The electronic device 100 includes a hinge assembly 10, a flexible display screen 20, a first housing 30, and a second housing 40. The first housing 30 and the second housing 40 are respectively connected to the two sides of the hinge assembly 10, and the first housing 30 can rotate relative to the second housing 40 through the hinge assembly 10 to realize the unfolding and folding of the electronic device 100. The flexible display screen 20 is located on one side of the hinge assembly 10 and is respectively connected to the first housing 30 and the second housing 40. The flexible display screen 20 can be unfolded or folded with the rotation of the first housing 30 and the second housing 40. For example, when the electronic device 100 is in the unfolded state, the flexible display screen 20 is also in the unfolded state. Specifically, when the electronic device 100 is in the unfolded state, the first housing 30 and the second housing 40 are roughly located in the same plane. At this time, the flexible display screen 20 can be roughly unfolded into a plane, so that the flexible display screen 20 has a larger area to provide a clearer picture for the user, and it is also convenient for the user to click, slide or write, etc., to enhance the user's experience.

[0104] The above-mentioned flexible display screen 20 can be, but is not limited to, an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (miniorganic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, etc.

[0105] The first housing 30 and the second housing 40 may be a middle frame structure of the electronic device 100. For example, the first housing 30 may be a main middle frame of the electronic device 100, and the second housing 40 may be a sub-middle frame of the electronic device 100. The first housing 30 and the second housing 40 are used to install components such as a battery, a circuit board, a camera, an earphone, a receiver, buttons, and a battery of the electronic device 100 (not shown in the figure).

[0106] The first housing 30 and the second housing 40 may be connected along a first direction (ie Figure 1 The first direction can be understood as the direction in which the electronic device 100 is folded inwards, so that the electronic device 100 switches from the unfolded state to the first folded state (the first folded state is the state of the electronic device 100 after being folded inwards). The first direction is opposite to the second direction.

[0107] like Figure 2 As shown, Figure 2 Schematic diagram of an electronic device 100 in a first folded state in an embodiment of the present application. In the first folded state, the flexible display screen 20 is located in a space enclosed by the folded first shell 30 and the second shell 40. At this time, the flexible display screen 20 is not exposed, and the user cannot operate the flexible display screen 20. The electronic device 100 in the first folded state is small in size and easy to store and carry.

[0108] The first shell 30 and the second shell 40 can also be connected along the second direction (ie Figure 1 The second direction can be understood as the direction in which the electronic device 100 is folded outwards, so that the electronic device 100 is switched from the unfolded state to the second folded state (the second folded state is the state of the electronic device 100 after being folded outwards).

[0109] like Figure 3 As shown, Figure 3Schematic diagram of an electronic device 100 in an embodiment of the present application in a second folded state. In the second folded state, the flexible display screen 20 is exposed outside the first shell 30 and the second shell 40, that is, the flexible display screen 20 can be regarded as the outer surface of the electronic device 100, so that the user can watch or operate it. The electronic device 100 in the second folded state is small in size and easy to store and carry.

[0110] like Figure 4 As shown, Figure 4 Schematic diagram of an electronic device 100 switching from an unfolded state to a first folded state and a second folded state in an embodiment of the present application. The width of the flexible display screen 20 is L1, and the width of the structural member formed by connecting the first housing 30, the hinge assembly 10 and the second housing 40 is L2. When the electronic device 100 is in the unfolded state, the width L1 of the flexible display screen 20 is equal to the width L2 of the structural member, and the flexible display screen 20 is not squeezed or stretched by the structural member.

[0111] When the flexible display screen 20 is folded along the first direction (direction A) and switched to the first folded state, the flexible display screen 20 will be accommodated inside the structural member, that is, accommodated in the space surrounded by the first shell 30, the second shell 40 and the hinge assembly 10. If the width L1 of the flexible display screen 20 in the first folded state is equal to the width L2 of the structural member, the first shell 30, the second shell 40 and the hinge assembly 10 cannot provide enough space to accommodate the flexible display screen 20, resulting in the flexible display screen 20 being squeezed, so that the flexible display screen 20 is at risk of breaking.

[0112] Please continue to refer to Figure 4 When the flexible display screen 20 is folded along the second direction (direction B) and switched to the second folded state, the flexible display screen 20 will be exposed on the outside of the structural member, that is, the first shell 30, the second shell 40 and the hinge assembly 10 are accommodated inside the flexible display screen 20. If the width L1 of the flexible display screen 20 in the second folded state is equal to the width L2 of the structural member, the flexible display screen 20 cannot provide enough space to accommodate the first shell 30, the second shell 40 and the hinge assembly 10, causing the flexible display screen 20 to be pulled, and also causing the flexible display screen 20 to be at risk of breaking.

[0113] In summary, in order to enable the electronic device 100 to have the functions of folding outward and folding inward at the same time, and to ensure that the flexible display screen 20 is not squeezed or pulled, the size of the structural member formed by the first housing 30, the hinge assembly 10 and the second housing 40 needs to match the size of the flexible display screen 20. That is, in order to prevent the flexible display screen 20 from being squeezed by the structural member, in the first folded state, the width L2 of the structural member should be greater than the width L1 of the flexible display screen 20. In order to prevent the flexible display screen 20 from being stretched by the structural member, in the second folded state, the width L2 of the structural member should be less than the width L1 of the flexible display screen 20.

[0114] Based on this, an embodiment of the present application provides a hinge assembly, and the hinge assembly in the embodiment of the present application can realize the outward folding and inward folding of the electronic device; at the same time, the hinge assembly can adjust its own width during the folding and unfolding of the electronic device, so that the width of the structural member composed of the hinge assembly, the first shell and the second shell can be adjusted to match the size of the flexible display screen, thereby ensuring that the flexible display screen will not be squeezed or stretched.

[0115] The structure of the rotating shaft assembly in the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0116] like Figure 5 As shown, Figure 5 Schematic diagram of a shaft assembly 10 in an embodiment of the present application. The shaft assembly 10 includes a shaft seat 11 and brackets located on both sides of the shaft seat 11 along the width direction Y of the shaft assembly 10, the two brackets are respectively a first bracket 121 and a second bracket 122. The shaft seat 11 is respectively provided with swing arm groups along the width direction Y of the shaft assembly 10, the two swing arm groups are respectively a first swing arm group 13 and a second swing arm group 14. The first bracket 121 is connected to the first housing 30 (as shown in FIG. Figure 1 As shown in FIG. 1 , the first bracket 121 is also rotatably connected to the shaft seat 11 through the first swing arm assembly 13. The second bracket 122 is connected to the second housing 40 (as shown in FIG. 1 ). Figure 1 As shown in FIG. 1 , the second bracket 122 is also rotatably connected to the shaft seat 11 through the second swing arm group 14. The first housing 30 can drive the first bracket 121 to rotate relative to the shaft seat 11, and the second housing 40 can drive the second bracket 122 to rotate relative to the shaft seat 11, thereby realizing the unfolding and folding of the electronic device 100.

[0117] The first swing arm group 13 includes a first main swing arm 131 and a first auxiliary swing arm 132, and the second swing arm group 14 includes a second main swing arm 141 and a second auxiliary swing arm 142. At least four sliding components 15 are arranged on the shaft seat 11, and the first main swing arm 131, the first auxiliary swing arm 132, the second main swing arm 141, and the second auxiliary swing arm 142 can be connected to the shaft seat 11 through their respective sliding components 15.

[0118] It should be noted that the length, width and thickness directions of the shaft assembly involved in this article are based on the viewing angle when the shaft assembly is in the unfolded state. Figure 5 When the shaft assembly 10 is in the unfolded state, the extension direction of the shaft seat 11 is the length direction X of the shaft assembly 10, the arrangement direction of the first bracket 121 and the second bracket 122 is the width direction Y of the shaft assembly 10, and the direction perpendicular to the length direction X and the width direction Y is the thickness direction Z of the shaft assembly 10.

[0119] The structure of the sliding assembly is described below by taking the sliding assembly between the first main swing arm and the axle seat as an example.

[0120] like Figure 6 and Figure 7 As shown, Figure 6 This is an exploded schematic diagram of the shaft assembly 10 in one embodiment of the present application. Figure 7 for Figure 6 The enlarged view of part I in the figure. The sliding assembly 15 may include a first sliding member 151, and the first sliding member 151 is movably connected to the first main swing arm 131. The first sliding member 151 is provided with a first slide groove 1511, and the first main swing arm 131 has a connecting portion 1311, and the connecting portion 1311 can extend into the first slide groove 1511. When the first main swing arm 131 rotates relative to the shaft seat 11, the connecting portion 1311 can slide in the first slide groove 1511. Specifically, when the first main swing arm 131 rotates along the first direction (direction A), the connecting portion 1311 can slide in the first slide groove 1511 in a direction away from the shaft seat 11, and when the first main swing arm 131 rotates along the second direction (direction B), the connecting portion 1311 can slide in the first slide groove 1511 in a direction close to the shaft seat 11.

[0121] The first slide groove 1511 may be an arcuate groove, that is, the bottom surface of the first slide groove 1511 is an arcuate surface. The connecting portion 1311 may also have a certain curvature, that is, the connecting portion 1311 may have a structure similar to a "C" shape. The curvature of the connecting portion 1311 corresponds to the curvature of the first slide groove 1511, so that the connecting portion 1311 can slide along an arc track in the first slide groove 1511, thereby improving the stability and smoothness of the rotation of the first main swing arm 131.

[0122] The first slide groove 1511 includes a first end 1511a and a second end 1511b along the width direction Y of the rotating shaft assembly 10. The first end 1511a and the second end 1511b can be provided with a first limiting structure (such as a limiting column, etc., not shown in the figure). The first limiting structure can abut against the connecting part 1311 to limit the sliding range of the connecting part 1311 in the first slide groove 1511 to prevent the connecting part 1311 from escaping from the first slide groove 1511, that is, to prevent the first main swing arm 131 from being disconnected from the first sliding member 151.

[0123] The shaft seat 11 is provided with an installation space 111, and the first sliding member 151 is installed in the installation space 111 and can extend from the installation space 111, that is, the first sliding member 151 is slidably connected to the shaft seat 11. Specifically, the installation space 111 has a first guide groove 1111, and the first sliding member 151 has a first guide protrusion 1512, and the first guide protrusion 1512 can extend into the first guide groove 1111 and move along the first guide groove 1111. Among them, the first guide groove 1111 can be an arc groove, and the first guide protrusion 1512 can be an arc protrusion, so that the first sliding member 151 can slide along an arc track in the installation space 111.

[0124] Along the length direction X of the shaft assembly 10, the side walls on both sides of the installation space 111 are provided with first guide grooves 1111. Correspondingly, both ends of the first sliding member 151 have first guide protrusions 1512. The two first guide protrusions 1512 respectively cooperate with the corresponding first guide grooves 1111 to improve the sliding stability and reliability of the first sliding member 151.

[0125] The first guide groove 1111 includes a third end 1111a and a fourth end 1111b along the width direction of the rotating shaft assembly 10. The third end 1111a and the fourth end 1111b may be provided with a second limiting structure (such as a limiting column, etc., not shown in the figure). The second limiting structure may abut against the first guide protrusion 1512 of the first sliding member 151 to limit the sliding range of the first guide protrusion 1512 in the first guide groove 1111 to prevent the first guide protrusion 1512 from falling out of the first guide groove 1111, that is, to prevent the first sliding member 151 from falling out of the installation space 111.

[0126] As can be seen from the above, the first main swing arm 131 is slidably connected to the arc-shaped first sliding member 151 on the shaft seat 11, so that it can rotate relative to the shaft seat 11. The movement process of the first main swing arm 131 is described below in a specific case.

[0127] Please continue to refer to Figure 6 and Figure 7When the electronic device 100 is in the unfolded state, the first sliding member 151 can be accommodated in the installation space 111, and the connecting portion 1311 of the first main swing arm 131 can be located on a side close to the first end 1511a of the first slide groove 1511. When the electronic device 100 switches from the unfolded state to the second folded state, the first main swing arm 131 rotates relative to the shaft seat 11 along the second direction (direction B). For the connecting portion 1311, the connecting portion 1311 can slide from the first end 1511a of the first slide groove 1511 to the direction close to the second end 1511b, that is, the connecting portion 1311 moves to the side close to the shaft seat 11. When the electronic device 100 is in the second folded state, the connecting portion 1311 can be located on a side close to the second end 1511b of the first slide groove 1511.

[0128] When the electronic device 100 switches from the unfolded state to the first folded state, the first main swing arm 131 rotates along the first direction (direction A) relative to the shaft seat 11. For the connecting portion 1311, the connecting portion 1311 needs to move from the first end 1511a of the first slide groove 1511 to a direction away from the second end 1511b. Due to the volume limitation of the electronic device 100, the overall size of the hinge assembly 10 is relatively small, and therefore the size of the first sliding member 151 in the width direction Y of the hinge assembly 10 (i.e., the arc length of the first sliding member 151) is relatively small. In this case, if the first sliding member 151 is fixed on the shaft seat 11 and cannot move, when the first main swing arm 131 rotates along the A direction, due to the limitation of the arc length of the first sliding member 151, the connecting portion 1311 will disengage from the first slide groove 1511, causing the first main swing arm 131 to be unable to rotate any further. In other words, the first slide groove 1511 makes it difficult for the connecting portion 1311 of the first main swing arm 131 to provide a sliding stroke to slide in a direction away from the second end 1511b, thereby causing the electronic device 100 to be unable to switch from the unfolded state to the first folded state.

[0129] In the embodiment of the present application, the first sliding member 151 can slide in the installation space 111, that is, the first sliding member 151 can slide relative to the shaft seat 11. Therefore, when the first main swing arm 131 rotates relative to the shaft seat 11 along the A direction, the first sliding member 151 can slide toward the third end 1111a of the first guide groove 1111, and can extend outward from the inside of the installation space 111, so that the distance between the connecting portion 1311 and the shaft seat 11 along the width direction Y of the rotating shaft assembly 10 includes the sliding distance of the connecting portion 1311 relative to the first sliding member 151 and the distance of the first sliding member 151 extending outward from the installation space 111 of the shaft seat 11, thereby increasing the distance of the connecting portion 1311 along the rotation direction Y. The distance between the shaft assembly 10 and the shaft seat 11 in the width direction Y is reduced, and there is no need to increase the distance between the connecting portion 1311 and the shaft seat 11 along the width direction Y of the shaft assembly 10 by increasing the sliding distance of the connecting portion 1311 relative to the first sliding member 151, thereby ensuring that the connecting portion 1311 and the first sliding groove 1511 are always in contact with each other, avoiding the first main swing arm 131 from being unable to continue to rotate due to the separation of the connecting portion 1311 and the first sliding groove 1511, so that the electronic device 100 can switch from the unfolded state to the first folded state.

[0130] The sliding assembly 15 connected to the first auxiliary swing arm 132, the sliding assembly 15 connected to the second main swing arm 141, and the sliding assembly 15 connected to the second main swing arm 141 have the same structure as the sliding assembly 15 connected to the first main swing arm 131 mentioned above, and the movement principles of the first auxiliary swing arm 132, the second main swing arm 141, and the second main swing arm 141 are also the same as the movement principle of the first main swing arm 131, which will not be repeated here.

[0131] By providing a sliding assembly 15 on the axle seat 11 that can slide relative to the axle seat 11, it is beneficial to provide sufficient sliding travel for each swing arm so that each swing arm can rotate inward and outward. In other words, by providing the sliding assembly 15, the rotation angle of each swing arm is increased, thereby realizing the inward and outward folding of the electronic device 100.

[0132] On the other hand, the sliding assembly 15 is provided between the swing arm and the shaft seat 11 to adjust the distance between the swing arm and the shaft seat 11. Specifically, when the electronic device 100 switches from the unfolded state to the first folded state, the sliding assembly 15 can extend in a direction away from the shaft seat 11, thereby increasing the distance between the swing arm and the shaft seat 11, that is, increasing the overall width of the hinge assembly 10, so that the hinge assembly 10 can be adapted to the flexible display screen 20 in the first folded state, and the possibility of the hinge assembly 10 squeezing the flexible display screen 20 in the first folded state is reduced. When the electronic device 100 switches from the unfolded state to the second folded state, the sliding assembly 15 can be retracted in a direction close to the shaft seat 11, thereby reducing the distance between the swing arm and the shaft seat 11, so that the hinge assembly 10 can be adapted to the flexible display screen 20 in the second folded state, and the possibility of the hinge assembly 10 stretching the flexible display screen 20 in the second folded state is reduced.

[0133] Continue to refer Figure 6 The first main swing arm 131 has a main body 1312, one end of the main body 1312 is connected to the connecting portion 1311, and the other end is connected to the first bracket 121. The first sliding member 151 is provided with a first notch 1513, and the first notch 1513 is connected to the first sliding groove 1511. When the first main swing arm 131 rotates, the first notch 1513 can avoid the main body 1312 of the first main swing arm 131, thereby reducing the possibility of interference between the first main swing arm 131 and the first sliding member 151.

[0134] The first sliding member 151 connected to the first auxiliary swing arm 132, the first sliding member 151 connected to the second main swing arm 141, and the first sliding member 151 connected to the second main swing arm 141 can all be provided with the above-mentioned first notch 1513 for avoidance to achieve smooth rotation of each swing arm, which will not be repeated here.

[0135] A second notch 112 is provided on the shaft seat 11 , and the second notch 112 is connected to the installation space 111 . When the first main swing arm 131 rotates, the second notch 112 can avoid the main body 1312 of the first main swing arm 131 , thereby reducing the possibility of interference between the first main swing arm 131 and the shaft seat 11 .

[0136] The shaft seat 11 is provided with the above-mentioned second notch 112 for avoidance at positions corresponding to the first auxiliary swing arm 132, the second main swing arm 141 and the second main swing arm 141, so as to realize the smooth rotation of each swing arm, which will not be repeated here.

[0137] like Figure 8 and Fig. 9 As shown, Figure 8 It is a partial exploded schematic diagram of the shaft assembly 10 in one embodiment of the present application. Fig. 91 is a partial cross-sectional view of the shaft assembly 10 in one embodiment of the present application. The sliding assembly 15 may further include a second sliding member 152, which is slidably disposed in the installation space 111, wherein the second sliding member 152 includes a second guide protrusion 1522, which may extend into the first guide groove 1111 of the installation space 111 and move along the first guide groove 1111. Specifically, the second guide protrusion 1522 may be an arc-shaped protrusion, so that the second sliding member 152 may slide along an arc-shaped track in the installation space 111.

[0138] The second sliding member 152 is provided with a second sliding groove 1521, and the first sliding member 151 is accommodated in the second sliding groove 1521 and can slide in the second sliding groove 1521, wherein the second sliding groove 1521 includes a second guide groove 1523, and the first guide protrusion 1512 of the first sliding member 151 can extend into the second guide groove 1523, so that the first sliding member 151 can slide along an arc trajectory in the second sliding member 152.

[0139] In the process of switching the rotating shaft assembly 10 from the unfolded state to the second folded state, the bracket rotates in the second direction (that is, the swing arm assembly rotates in the second direction), and the swing arm assembly 10 rotates in the second direction. Figure 7 As shown, the connection portion 1311 of the swing arm group slides from the first end 1511a of the first slide groove 1511 to the direction close to the second end 1511b of the first slide groove 1511; during the process of the rotating shaft assembly 10 switching from the unfolded state to the first folded state, the bracket rotates along the first direction (that is, the swing arm group rotates along the second direction), and the connection portion 1311 of the swing arm group slides from the first end 1511a of the first slide groove 1511 to the direction away from the second end 1511b of the first slide groove 1511, and the first sliding member 151 slides along the second slide groove 1521 to the side away from the shaft seat 11, and the second sliding member 152 can extend out of the installation space 111.

[0140] The first sliding member 151 and the second sliding member 152 can form a retractable nested structure. When the electronic device 100 switches from the unfolded state to the first folded state, the second sliding member 152 can extend from the installation space 111, and the first sliding member 151 can extend from the second sliding member 152, thereby further increasing the sliding stroke of the swing arm to meet the rotation requirements of the swing arm. At the same time, when the first sliding member 151 and the second sliding member 152 are both in the extended state, the distance between the swing arm and the shaft seat 11 is further increased, thereby increasing the overall width of the hinge assembly 10.

[0141] According to the needs of the electronic device 100, the sliding assembly 15 can also include multiple sliding parts, which are nested together and can be extended and contracted to provide sufficient sliding stroke for the swing arm and allow the distance between the swing arm and the shaft seat 11 to be fully adjusted.

[0142] The above description is about realizing the rotation of each swing arm through the sliding component, thereby realizing the inward and outward folding functions of the electronic device. The following describes in detail how the size and shape of the hinge component are adapted to the flexible display screen, thereby ensuring that the flexible display screen will not be squeezed or stretched.

[0143] As shown in 10, Fig.10 Schematic diagram of a shaft assembly 10 in another embodiment of the present application. The shaft assembly 10 further includes a support plate assembly 16, which at least includes main support plates located on both sides of the shaft seat 11 along the width direction Y of the shaft assembly 10, wherein the main support plates on both sides of the shaft seat 11 are respectively a first main support plate 161 and a second main support plate 162, and the first main support plate 161 and the second main support plate 162 can be a flat plate structure, along the thickness direction Z of the shaft assembly 10, the first main support plate 161 is connected to one side of the first bracket 121, and the second main support plate 162 is connected to one side of the second bracket 122. The first main support plate 161 and the second main support plate 162 are respectively connected to the flexible display screen 20, and play a supporting role for the flexible display screen 20.

[0144] The shaft assembly 10 further includes elastic members located on both sides of the shaft seat 11 along the width direction Y of the shaft assembly 10, wherein the elastic member located between the first main support plate 161 and the shaft seat 11 is a first elastic member 171, and the first main support plate 161 is rotatably connected to the shaft seat 11 through the first elastic member 171. The elastic member located between the second main support plate 162 and the shaft seat 11 is a second elastic member 172, and the second main support plate 162 is rotatably connected to the shaft seat 11 through the second elastic member 172. The first elastic member 171 and the second elastic member 172 have the ability of elastic deformation, and the materials of the two can be highly elastic metals, such as spring steel, spring copper, spring aluminum, or can also be made of highly elastic plastic materials, composite materials, etc., which are not listed here one by one.

[0145] When the main support plate rotates relative to the shaft seat 11 along the above-mentioned first direction, so that the shaft assembly 10 switches from the unfolded state to the first folded state, the elastic member stretches to make the main support plate move away from the shaft seat 11. When the main support plate rotates relative to the shaft seat 11 along the above-mentioned second direction, so that the shaft assembly 10 switches from the unfolded state to the second folded state, the elastic member contracts to make the main support plate close to the shaft seat 11.

[0146] As mentioned above, in order to prevent the flexible display screen 20 from being squeezed by the structural member connected by the first shell 30, the hinge assembly 10 and the second shell 40, the length of the structural member should be greater than the length of the flexible display screen 20 in the first folded state. In the embodiment of the present application, when the electronic device 100 is switched from the unfolded state to the first folded state, the first elastic member 171 can be stretched as the first main support plate 161 rotates, and the second elastic member 172 can be stretched as the second main support plate 162 rotates. Since the lengths of the first elastic member 171 and the second elastic member 172 increase, the width of the hinge assembly 10 in the first folded state is increased, thereby making the width of the structural member connected by the first shell 30, the hinge assembly 10 and the second shell 40 match the width of the flexible display screen 20. At this time, the flexible display screen 20 will not be squeezed, thereby reducing the risk of the flexible display screen 20 being broken during the folding process, so as to improve the reliability of the electronic device 100.

[0147] Further, in the process of switching the electronic device 100 from the unfolded state to the first folded state, the flexible display screen 20 is folded along the hinge assembly 10, and the position of the bending zone formed after the flexible display screen 20 is folded corresponds to the position of the hinge assembly 10. The shape of the bending zone in the first folded state can be "U"-shaped or teardrop-shaped. After the first elastic member 171 and the second elastic member 172 are stretched, the width of the hinge assembly 10 in the first folded state increases, so that it can be adapted to the arc length of the bending zone of the flexible display screen 20. In other words, due to the stretching of the first elastic member 171 and the second elastic member 172, the hinge assembly 10 provides a corresponding accommodation space for the bending zone of the flexible display screen 20, reducing the possibility of the hinge assembly 10 squeezing the bending zone of the flexible display screen 20.

[0148] As mentioned above, in order to prevent the flexible display screen 20 from being pulled by the structural member connected by the first shell 30, the hinge assembly 10 and the second shell 40, the length of the structural member should be less than the length of the flexible display screen 20 in the second folded state. In the embodiment of the present application, when the electronic device 100 is switched from the unfolded state to the second folded state, the first elastic member 171 can be compressed as the first main support plate 161 rotates, and the second elastic member 172 can be compressed as the second main support plate 162 rotates. Since the lengths of the first elastic member 171 and the second elastic member 172 are reduced, the width of the hinge assembly 10 in the second folded state is reduced, thereby making the width of the structural member connected by the first shell 30, the hinge assembly 10 and the second shell 40 match the width of the flexible display screen 20. At this time, the flexible display screen 20 will not be stretched, thereby reducing the risk of the flexible display screen 20 being broken during the folding process, so as to improve the reliability of the electronic device 100.

[0149] Furthermore, when the electronic device 100 switches from the unfolded state to the second folded state, the hinge assembly will be accommodated in the bending zone of the flexible display screen 20. The bending zone in the second folded state may be in a "U" shape or a teardrop shape. After the first elastic member 171 and the second elastic member 172 are compressed, the width of the hinge assembly 10 in the second folded state is reduced compared to the width of the hinge assembly 10 in the unfolded state, so that the hinge assembly 10 can be accommodated in the bending zone of the flexible display screen 20 without pulling the bending zone of the flexible display screen 20.

[0150] Continue to refer Fig.10 Along the length direction X of the shaft assembly 10, two, three or more first elastic members 171 may be provided between the first main support plate 161 and the shaft seat 11 to improve the stability of the connection between the first main support plate 161 and the shaft seat 11. Two, three or more second elastic members 172 may be provided between the second main support plate 162 and the shaft seat 11 to improve the stability of the connection between the second main support plate 162 and the shaft seat 11.

[0151] like Fig.11 As shown, Fig.11 for Fig.10 The first elastic member 171 may include a first elastic portion 1711, a second elastic portion 1712 and a third elastic portion 1713. Fig.10 As shown, the first elastic part 1711 is fixedly connected to the shaft seat 11 through the second elastic part 1712, and the first elastic part 1711 is fixedly connected to the first main support plate 161 through the third elastic part 1713. The first elastic part 1711 and the shaft seat 11, and the third elastic part 1713 and the first main support plate 161 can be connected by welding, bonding, snap-fit ​​connection, etc.

[0152] The first elastic portion 1711 has a hollow portion 1714, combined with Fig.10 As shown, the hollow portion 1714 penetrates the first elastic member 171 along the thickness direction Z of the first elastic member 171. The hollow portion 1714 may be rectangular, that is, the first elastic member 1711 may have a "mouth"-shaped structure. The hollow portion 1714 provides a deformation space for the first elastic member 171 to increase the deformation amount of the first elastic member 171 to achieve the change of the width of the shaft assembly 10. In other embodiments, the hollow portion 1714 may also be circular, triangular, diamond-shaped, etc.

[0153] The second elastic portion 1712 and the third elastic portion 1713 may have a “I”-shaped structure to achieve a stable and reliable connection between the first elastic portion 1711 and the shaft seat 11 and the first main support plate 161 .

[0154] The structure of the second elastic member 172 is the same as that of the first elastic member 171 , and will not be described in detail herein.

[0155] In other embodiments, the first elastic member 171 and the second elastic member 172 may be elastic bodies such as springs and spring sheets.

[0156] like Fig.12 As shown, Fig.12 Schematic diagram of the shaft assembly 10 in another embodiment of the present application. The support plate assembly 16 may further include auxiliary support plates disposed on both sides of the shaft seat 11 along the width direction Y of the shaft assembly 10, wherein the auxiliary support plate located between the shaft seat 11 and the first main support plate 161 is the first auxiliary support plate 163, and the auxiliary support plate located between the shaft seat 11 and the second main support plate 162 is the second auxiliary support plate 164. The first auxiliary support plate 163 and the second auxiliary support plate 164 may be connected to the flexible display screen respectively to support the flexible display screen.

[0157] The first auxiliary support plate 163 can be rotatably connected to the shaft seat 11 and the first main support plate 161 through the first elastic member 171, that is, along the width direction Y of the shaft assembly 10, at least two first elastic members 171 can be provided on one side of the shaft assembly 10 close to the first main support plate 161.

[0158] The second auxiliary support plate 164 can be rotatably connected to the shaft seat 11 and the second main support plate 162 through the second elastic member 172, that is, along the width direction Y of the shaft assembly 10, at least two second elastic members 172 can be provided on one side of the shaft assembly 10 close to the second main support plate 162.

[0159] When the electronic device 100 switches from the unfolded state to the first folded state, the first elastic members 171 on both sides of the first auxiliary support plate 163 are stretched as the first main support plate 161 and the first auxiliary support plate 163 rotate, and the second elastic members 172 on both sides of the second auxiliary support plate 164 are stretched as the second main support plate 162 and the second auxiliary support plate 164 rotate. Conversely, when the electronic device 100 switches from the unfolded state to the second folded state, each of the first elastic members 171 and each of the second elastic members 172 will be compressed. Fig.10 In the above embodiment, the number of the first elastic member 171 and the second elastic member 172 in the width direction Y of the hinge assembly 10 is increased. When the number of elastic members increases, the elongation and compression of the elastic members as a whole increase, that is, the change in the width dimension of the hinge assembly 10 increases, which is conducive to meeting the use requirements of the flexible display screen 20.

[0160] On the other hand, by providing the first sub-support plate 163 and the second sub-support plate 164, the supporting effect of the hinge assembly 10 on the flexible display screen 20 is improved, and the possibility of the flexible display screen 20 collapsing toward the side close to the hinge assembly 10 is reduced, which is beneficial to extending the service life of the flexible display screen 20 and improving the stability and reliability of the use of the flexible display screen 20.

[0161] As can be seen from the above, as the number of support plates increases, the number of elastic members in the width direction of the hinge assembly 10 also increases accordingly. In some embodiments, the number of the first auxiliary support plates 163 and the second auxiliary support plates 164 on both sides of the shaft seat 11 can also be one, two, three or more. Specifically, the number of the first auxiliary support plates 163 and the second auxiliary support plates 164 can be adjusted according to the use needs of the flexible display screen 20. For example, when the arc length of the bending zone 21 formed by the flexible display screen 20 in the first folded state is large, by increasing the number of the first auxiliary support plates 163 and the second auxiliary support plates 164, a reliable support effect can be provided for the bending zone 21 of the flexible display screen 20, so that the flexible display screen 20 will not collapse in the direction close to the hinge assembly 10; at the same time, since the number of the first elastic member 171 and the second elastic member 172 also increases accordingly, the size change of the hinge assembly 10 increases, so as to match the arc length of the bending zone 21 of the flexible display screen 20, and reduce the possibility of the flexible display screen 20 being squeezed.

[0162] Continue as Fig.12 As shown, flexible members are also provided on both sides of the shaft seat 11 along the width direction Y of the shaft assembly 10, wherein the flexible member located on one side of the first bracket 121 is a first flexible member 165, and the first main support plate 161 can be rotatably connected to the first bracket 121 through the first flexible member 165. The flexible member located on one side of the second bracket 122 is a second flexible member 166, and the second main support plate 162 can be rotatably connected to the second bracket 122 through the second flexible member 166.

[0163] Among them, the first flexible part 165 and the second flexible part 166 can have an "I"-shaped structure, and their materials can be highly flexible plastics, such as thermoplastic elastomer materials (TPE), thermoplastic polyurethane elastomers (TPU), polyvinyl chloride (PVC), etc., or they can also be highly flexible metals, such as metal copper, metal aluminum, etc.

[0164] In some other embodiments, the first flexible member 165 and the second flexible member 166 may have structures of other shapes, such as an I-shape, a X-shape, or a M-shape.

[0165] The first flexible member 165 can be welded to the first main support plate 161 and the first bracket 121 respectively, and the second flexible member 166 can be welded to the second main support plate 162 and the second bracket 122 respectively. In some other embodiments, each flexible member can be bonded or snap-connected to the corresponding support plate and bracket.

[0166] Along the length direction X of the rotating shaft assembly 10, a plurality of first flexible members 165 may be provided between the first main support plate 161 and the first bracket 121 to improve the stability and reliability of the connection between the first main support plate 161 and the first bracket 121. A plurality of second flexible members 166 may be provided between the second main support plate 162 and the second bracket 122 to improve the stability and reliability of the connection between the second main support plate 162 and the second bracket 122.

[0167] like Fig.13 As shown, Fig.13 Schematic diagram of the connection between the first main support plate 161 and the first bracket 121 in one embodiment of the present application, wherein the electronic device 100 is in an unfolded state. The first bracket 121 includes a first body portion 1211 and a second body portion 1212, and the first body portion 1211 is connected to the second body portion 1212. The first body portion 1211 has a step-shaped structure, and the first flexible member 165 can be accommodated in the first body portion 1211 and connected to the first body portion 1211. The longitudinal section of the second body portion 1212 is a trapezoid. Specifically, the dimension of the second body portion 1212 along the thickness direction Z of the hinge assembly 10 gradually decreases in the direction away from the first body portion 1211, so that the second body portion 1212 has an inclined top wall. When the electronic device 100 is in the unfolded state, there is a certain interval between the bottom wall of the first main support plate 161 and the top wall of the second body portion 1212. When the electronic device 100 switches between the unfolded state and the folded state, the first main support plate 161 can rotate toward the first bracket 121 until the bottom wall of the first main support plate 161 abuts against the top wall of the second body portion 1212 .

[0168] The structure of the second bracket 122 is the same as that of the first bracket 121, and will not be described again. When the electronic device 100 switches between the unfolded state and the folded state, the second main support plate 162 can rotate toward the second bracket 122 until the bottom wall of the second main support plate 162 abuts against the inclined top wall of the second bracket 122.

[0169] like Fig.14 As shown, Fig.14The schematic diagram is a diagram of the bending area 21 of the flexible display screen 20 and the first bracket 121, the first main support plate 161, the second bracket 122, and the second main support plate 162 when the electronic device 100 is in the first folding state in an embodiment of the present application. In the first folding state, the bending area 21 of the flexible display screen 20 can be similar to a water drop shape. At this time, the first main support plate 161 abuts against the first bracket 121, and the second main support plate 162 abuts against the second bracket 122, so that the first main support plate 161 and the second main support plate 162 are inclined to the side away from the flexible display screen 20, so as to adapt to the shape of the bending area 21 of the flexible display screen 20, improve the supporting effect of the first main support plate 161 and the second main support plate 162 on the flexible display screen 20, and provide a storage space for the bending area 21 of the flexible display screen 20, reducing the possibility of the first main support plate 161 and the second main support plate 162 squeezing the flexible display screen 20 when the electronic device 100 is in the first folding state, so as to ensure the normal use of the flexible display screen 20.

[0170] Similarly, when the electronic device 100 is in the second folding state, the shape of the bending zone 21 of the flexible display screen 20 can be approximately U-shaped. In the second folding state, the hinge assembly 10 is accommodated in the bending zone 21 of the flexible display screen 20. At this time, the first main support plate 161 can abut against the first bracket 121, and the second main support plate 162 can abut against the second bracket 122, so that the first main support plate 161 and the second main support plate 162 are both inclined to the side away from the flexible display screen 20, thereby adapting to the shape of the bending zone 21 of the flexible display screen 20 to improve the support effect on the flexible display screen 20 and reduce the possibility of the flexible display screen 20 being pulled.

[0171] like Fig.15 As shown, Fig.15 This is a partial schematic diagram of a shaft assembly 10 in another embodiment of the present application. Fig.15 The first main support plate 161, the first auxiliary support plate 163 and the first bracket 121 are hidden to facilitate the display of the structure of the first push rod 191 and the second push rod 192. The shaft assembly 10 may also include a push rod assembly 19, which includes a first push rod 191 and a second push rod 192. Fig.12 As shown, one first push rod 191 is movably connected between the shaft seat 11 and the first bracket 121, and another first push rod 191 is also movably connected between the shaft seat 11 and the second bracket 122. In other words, both sides of the shaft seat 11 are connected with the first push rod 191.

[0172] Combine the following Fig.12 and Fig.15 , the structure of the first push rod 191 is described by taking the first push rod 191 between the shaft seat 11 and the first bracket 121 as an example.

[0173] One end of the first push rod 191 is rotatably connected to the first bracket 121 , and the other end of the first push rod 191 is rotatably connected to the shaft seat 11 , and can move relative to the shaft seat 11 along the length direction X of the rotating shaft assembly 10 .

[0174] In some embodiments, a first spherical portion 1911 and a second spherical portion 1912 are respectively provided at both ends of the first push rod 191, and the first push rod 191 is hinged to the first bracket 121 through the first spherical portion 1911, and the first push rod 191 is hinged to the shaft seat 11 through the second spherical portion 1912, so that the first push rod 191 can rotate smoothly between the first bracket 121 and the shaft seat 11.

[0175] The shaft seat 11 is provided with a guide rail 114 and a moving member 113. The guide rail 114 extends along the length direction X of the rotating shaft assembly 10. The moving member 113 is connected to the guide rail 114 and can move along the guide rail 114. In other words, the moving member 113 can move in the length direction X of the rotating shaft assembly 10. The first push rod 191 is rotatably connected to the moving member 113. Specifically, the second spherical portion 1912 of the first push rod 191 is hinged to the moving member 113, so that the first push rod 191 can rotate relative to the moving member 113 and can move along the guide rail 114 together with the moving member 113. By providing the guide rail 114, the stability of the moving member 113 moving in the length direction X of the rotating shaft assembly 10 is improved, thereby improving the stability of the movement of the first push rod 191 and improving the motion accuracy of the rotating shaft assembly 10.

[0176] When the electronic device 100 is in the unfolded state, the first push rod 191 may be in the Fig.15In the process of switching the electronic device 100 from the unfolded state to the first folded state, the first push rod 191 can rotate with the rotation of the first bracket 121. At the same time, the first push rod 191 can also move along the length direction X of the hinge assembly 10 through the moving member 113, so that the angle α between the first push rod 191 and the width direction Y of the hinge assembly 10 becomes smaller, that is, the length of the projection of the first push rod 191 in the width direction Y of the hinge assembly 10 becomes larger, so that the first bracket 121 can move in the direction away from the shaft seat 11, so that the width of the hinge assembly 10 is increased, thereby matching the arc length of the flexible display screen in the first folded state. Relatively speaking, when the electronic device 100 switches from the unfolded state to the second folded state, the first push rod 191 can also be moved along the length direction X of the hinge assembly 10 through the moving member 113, so that the angle α between the first push rod 191 and the width direction Y of the hinge assembly 10 becomes larger, that is, the length of the projection of the first push rod 191 in the width direction Y of the hinge assembly 10 becomes smaller, so that the first bracket 121 can move toward the direction close to the shaft seat 11, even if the width of the hinge assembly 10 is reduced, thereby matching the arc length of the flexible display screen in the second folded state.

[0177] When the shaft assembly 10 is in the first folded state, a first angle α1 is formed between the first push rod 191 and the width direction Y of the shaft assembly 10. When the shaft assembly 10 is in the second folded state, a second angle α2 is formed between the first push rod 191 and the width direction Y of the shaft assembly 10, and the first angle α1 is smaller than the second angle α2, so that the projection of the first push rod 191 in the width direction Y of the shaft assembly 10 is continuously reduced during the process of switching the shaft assembly 10 from the first folded state to the second folded state.

[0178] The structure and movement principle of the first push rod between the shaft seat and the second bracket are the same as the structure and movement principle of the first push rod between the shaft seat and the first bracket, and will not be repeated here.

[0179] Please continue to refer to Fig.12 and Fig.15 The rotating shaft assembly 10 also includes a second push rod 192, one second push rod 192 is movably connected between the shaft seat 11 and the first auxiliary support plate 163, and at the same time, another second push rod 192 is also movably connected between the shaft seat 11 and the second auxiliary support plate 164, that is, the second push rods 192 are connected to both sides of the shaft seat 11.

[0180] The structure of the second push rod 192 will be described below by taking the second push rod 192 between the shaft seat 11 and the first auxiliary support plate 163 as an example.

[0181] One end of the second push rod 192 is rotatably connected to the first auxiliary support plate 163 , and the other end of the second push rod 192 is rotatably connected to the shaft seat 11 , and can move relative to the shaft seat 11 along the length direction X of the shaft assembly 10 .

[0182] In some embodiments, a third spherical portion 1921 and a fourth spherical portion 1922 are respectively provided at both ends of the second push rod 192, and the second push rod 192 is hinged to the first sub-support plate 163 through the third spherical portion 1921, and the second push rod 192 is hinged to the shaft seat 11 through the fourth spherical portion 1922, so that the second push rod 192 can rotate smoothly between the first sub-support plate 163 and the shaft seat 11.

[0183] In some embodiments, the first auxiliary support plate 163 is provided with a mounting seat (not shown in the figure), and the third spherical portion 1921 of the second push rod 192 can be hinged to the mounting seat to improve the stability of the connection between the second push rod 192 and the first auxiliary support plate 163.

[0184] A mating piece 115 is provided on the shaft seat 11, and the mating piece 115 is provided with a mating groove 1151 extending along the length direction X of the rotating shaft assembly 10. One end of the second push rod 192 is located in the mating groove 1151 and can move along the mating groove 1151. Specifically, the fourth spherical portion 1922 of the second push rod 192 can be located in the mating groove 1151, and the fourth spherical portion 1922 can move along the mating groove 1151, so that the second push rod 192 can rotate relative to the mating piece 115 and can move along the mating groove 1151 of the mating piece 115.

[0185] The matching piece 115 can be fixedly connected to the above-mentioned moving piece 113. For example, a part of the matching piece 115 can be embedded in the moving piece 113. Therefore, the matching piece 115 can move along the length direction X of the shaft assembly 10 together with the moving piece 113, thereby realizing the linkage between the first push rod 191 and the second push rod 192. That is to say, the first push rod 191 is connected to the second push rod 192 through the moving piece 113 and the matching piece 115. When the first push rod 191 moves along the length direction X of the shaft assembly 10, the second push rod 192 also moves therewith, so as to improve the movement accuracy of the entire shaft assembly 10, thereby improving the reliability of the shaft assembly 10.

[0186] When the electronic device 100 is in the unfolded state, the second push rod 192 may be in the Fig.15In the process of switching the electronic device 100 from the unfolded state to the first folded state, the second push rod 192 can rotate with the rotation of the first sub-support plate 163. At the same time, the second push rod 192 can also move along the length direction X of the hinge assembly 10 through the matching groove 1151, so that the angle β between the second push rod 192 and the width direction Y of the hinge assembly 10 becomes smaller, that is, the length of the projection of the second push rod 192 in the width direction Y of the hinge assembly 10 becomes larger, so that the first sub-support plate 163 can move in the direction away from the shaft seat 11, so that the width of the hinge assembly 10 is increased, thereby matching the arc length of the flexible display screen 20 in the first folded state. Relatively speaking, when the electronic device 100 switches from the unfolded state to the second folded state, the second push rod 192 can also move along the length direction X of the hinge assembly 10 through the mating groove 1151, so that the angle β between the second push rod 192 and the width direction Y of the hinge assembly 10 becomes larger, that is, the length of the projection of the second push rod 192 in the width direction Y of the hinge assembly 10 becomes smaller, so that the first sub-support plate 163 can move toward the direction close to the shaft seat 11, even if the width of the hinge assembly 10 is reduced, thereby matching the arc length of the flexible display screen 20 in the second folded state.

[0187] When the shaft assembly 10 is in the first folded state, a third angle β1 is formed between the second push rod 192 and the width direction Y of the shaft assembly 10. When the shaft assembly 10 is in the second folded state, a fourth angle β2 is formed between the second push rod 192 and the width direction Y of the shaft assembly 10, and the third angle β1 is smaller than the second angle β2, so that the projection of the second push rod 192 in the width direction Y of the shaft assembly 10 is continuously reduced during the process of the shaft assembly 10 switching from the first folded state to the second folded state.

[0188] The structure and movement principle of the second push rod between the shaft seat and the second auxiliary support plate are the same as the structure and movement principle of the second push rod between the shaft seat and the first auxiliary support plate, and will not be repeated here.

[0189] When the electronic device 100 is in the first folding state and the second folding state, the first push rod 191 can support and limit the first bracket 121 and the second bracket 122. Since the first main support plate 161 is connected to the first bracket 121 and the second main support plate 162 is connected to the second bracket 122, it also limits and constrains the first main support plate 161 and the second main support plate 162, and determines the positions of the first main support plate 161 and the second main support plate 162 in the first folding state and the second folding state, so as to facilitate the matching of the shape of the hinge assembly 10 and the shape of the flexible display screen 20, and reduce the possibility of the flexible display screen 20 being squeezed or stretched. At the same time, under the action of the first push rod 191, the first main support plate 161 and the second main support plate 162 can reliably support the flexible display screen 20, so that the first main support plate 161 and the second main support plate 162 are maintained in the current position to improve the stability of the flexible display screen 20.

[0190] The second push rod 192 supports and limits the first auxiliary support plate 163 and the second auxiliary support plate 164, respectively, and determines the positions of the first auxiliary support plate 163 and the second auxiliary support plate 164 in the first folded state and the second folded state, so as to facilitate the matching of the shape of the hinge assembly 10 with the shape of the flexible display screen 20. At the same time, under the support of the second push rod 192, the first auxiliary support plate 163 and the second auxiliary support plate 164 are maintained at the current position, thereby reliably supporting the flexible display screen 20 and improving the stability of the flexible display screen 20.

[0191] For example, Fig.16 As shown, Fig.16Schematic diagram of the flexible display screen 20 and each support plate in the first folding state in one embodiment of the present application. The bending area 21 of the flexible display screen 20 in the first folding state can be teardrop-shaped. The bending area 21 is accommodated in the first space 10a surrounded by the shaft seat, the main support plate and the auxiliary support plate. At this time, the second push rod 192 can provide support force for the first auxiliary support plate 163 and the second auxiliary support plate 164 in the direction away from the flexible display screen 20, respectively, and make the first auxiliary support plate 163 and the second auxiliary support plate 164 stably maintain in the preset position, so as to increase the distance between the first auxiliary support plate 163 and the second auxiliary support plate 164, thereby providing sufficient accommodation space for the bending area 21 of the flexible display screen 20. The first main support plate 161 and the second main support plate 162 can also be stably maintained in a preset state under the action of their respective first push rods 191, so that the shape of the accommodation space enclosed by the first main support plate 161, the second main support plate 162, the first auxiliary support plate 163, the second auxiliary support plate 164 and the shaft seat 11 matches the shape of the bending area 21 of the flexible display screen 20 to ensure that the flexible display screen 20 will not be squeezed. At the same time, since the shape of each support plate is compatible with the shape of the flexible display screen 20, the reliability of the support plate's support for the flexible display screen 20 is improved, and the possibility of the flexible display screen collapsing downward when pressed is reduced, thereby improving the user's operating experience.

[0192] When the hinge assembly is in the first folded state, the hinge assembly has a first space for accommodating the bending area of ​​the flexible display screen, and the first space can be enclosed by the main support plate and the shaft seat, or the first space can also be enclosed by the main support plate, the auxiliary support plate and the shaft seat. When the hinge assembly is in the second folded state, the hinge assembly has a second space, and the second space can be enclosed by the main support plate and the shaft seat, or the second space can also be enclosed by the main support plate, the auxiliary support plate and the shaft seat, and the bending area of ​​the flexible display screen is used to cover the side of the main support plate and the shaft seat away from the second space.

[0193] As mentioned above, when the hinge assembly switches from the unfolded state to the first folded state, the elastic member stretches to move the main support plate away from the shaft seat, thereby increasing the width of the hinge assembly in the first folded state to match the width of the flexible display screen in the first folded state; when the hinge assembly switches from the unfolded state to the second folded state, the elastic member contracts to move the main support plate closer to the shaft seat, so that the width of the hinge assembly in the second folded state is reduced compared to the width of the hinge assembly in the unfolded state, so that the hinge assembly can be accommodated in the bending area of ​​the flexible display screen and will not pull the bending area of ​​the flexible display screen. It can be seen from this that the arc length of the above-mentioned first space is greater than the arc length of the above-mentioned second space.

[0194] A decorative panel assembly may also be provided on the side of the hinge assembly facing away from the flexible display screen. The decorative panel assembly may shield the internal structure of the hinge assembly, thereby playing a protective role and reducing the possibility of interference and collision between the external structure of the hinge assembly and the internal structure of the hinge assembly, thereby improving the overall reliability of the hinge assembly and improving the refinement of the appearance of the hinge assembly to meet the use needs of electronic equipment.

[0195] like Fig.17 As shown, Fig.17 It is a partial schematic diagram of the rotating shaft assembly 10' in the related art. In the related art, the decorative plate assembly 18' may include a first decorative plate 181', a second decorative plate 182' and a third decorative plate 183', the first decorative plate 181' is connected to the first bracket 121', the second decorative plate 182' is connected to the second bracket 122', and the third decorative plate 183' is connected to the shaft seat 11'. Along the width direction Y of the rotating shaft assembly 10', a gap D is set between the first decorative plate 181' and the third decorative plate 183', and between the second decorative plate 182' and the third decorative plate 183'.

[0196] like Fig.18 As shown, Fig.18 Schematic diagram of the first decorative plate 181', the second decorative plate 182' and the third decorative plate 183' in the related art. The first decorative plate 181' can move closer to the third decorative plate 183' with the rotation of the first bracket 121', and the second decorative plate 182' can move closer to the side of the third decorative plate 183' with the rotation of the second bracket 122'. Since the above-mentioned interval D is provided between the first decorative plate 181' and the third decorative plate 183', and between the second decorative plate 182' and the third decorative plate 183', corresponding space is provided for the rotation of the first decorative plate 181' and the second decorative plate 182', so that there will be no interference between the first decorative plate 181' and the third decorative plate 183', and between the second decorative plate 182' and the third decorative plate 183' during the rotation process.

[0197] In the related art, the first decorative panel 181', the second decorative panel 182' and the third decorative panel 183' are independently arranged, that is, the decorative panels adopt a split design, which increases the difficulty of assembling the shaft assembly 10'. Specifically, during the assembly of the shaft assembly 10', the first decorative panel 181', the second decorative panel 182' and the third decorative panel 183' need to be assembled to corresponding positions respectively. Since the three are independent of each other, the three need to be positioned relative to each other to ensure the assembly accuracy of the shaft assembly 10'. This makes the assembly steps of the shaft assembly 10' more complicated and difficult, and also increases the production cost of the shaft assembly 10'.

[0198] On the other hand, in the unfolded state, there is a gap D between the first decorative panel 181', the second decorative panel 182' and the third decorative panel 183'. As mentioned above, the decorative panels have the function of shielding and protecting the internal structure of the hinge assembly 10'. Therefore, when there is the above-mentioned gap between the decorative panels, the shielding and protective effect of the decorative panels is reduced, thereby affecting the reliability of the hinge assembly 10'. In addition, the existence of the above-mentioned gap also affects the refinement of the appearance of the hinge assembly 10', which makes it difficult to meet the use requirements of electronic equipment.

[0199] In order to solve the problem that the gap between the decorative panels affects the appearance refinement of the shaft assembly, an embodiment of the present application provides an integrated decorative panel assembly, and the structure of the decorative panel assembly is described in detail below.

[0200] like Fig.19 As shown, Fig.19 Schematic diagram of a shaft assembly 10 in another embodiment of the present application. The decorative plate assembly includes a first decorative plate 181, a second decorative plate 182, and a third decorative plate 183 arranged along the width direction Y of the shaft assembly 10. Along the thickness direction Z of the shaft assembly 10, the first decorative plate 181 is connected to the side of the first bracket 121 away from the first main support plate 161, the second decorative plate 182 is connected to the side of the first bracket 121 away from the second main support plate 162, and the third decorative plate 183 is connected to one side of the shaft seat 11. The first decorative plate 181 and the third decorative plate 183, and the second decorative plate 182 and the third decorative plate 183 are connected by elastic connectors 184. Since the elastic connector 184 has a certain flexibility and the ability of elastic deformation, a rotatable connection relationship is achieved between the first decorative panel 181 and the third decorative panel 183, and between the second decorative panel 182 and the third decorative panel 183. As mentioned above, the width dimension of the hinge assembly 10 can be adjusted to match the arc length of the bending area 21 of the flexible display screen 20. It can be understood that the elastic connector 184 can be stretched or shortened according to the change in the width of the hinge assembly 10 to ensure that the electronic device 100 can switch between the unfolded state, the first folded state and the second folded state.

[0201] The elastic connecting piece 184 connects the first decorative panel 181, the second decorative panel 182 and the third decorative panel 183 into a whole, that is, the three decorative panels adopt an integrated design, which makes it unnecessary for the first decorative panel 181, the second decorative panel 182 and the third decorative panel 183 to be positioned relative to each other during reassembly, thereby reducing the assembly difficulty of the shaft assembly 10, simplifying the assembly steps of the shaft assembly 10, and reducing the production cost of the shaft assembly 10; at the same time, the relative position accuracy among the first decorative panel 181, the second decorative panel 182 and the third decorative panel 183 is improved, thereby improving the matching accuracy of the shaft assembly 10.

[0202] The material of the elastic connector 184 may be a highly elastic metal, such as spring steel, spring copper, spring aluminum, or may be a highly elastic plastic material, a composite material, etc., which are not listed here one by one.

[0203] like Fig. 20 As shown, Fig. 20 Schematic diagram of an elastic connector 184 in an embodiment of the present application, wherein the structure in the dotted frame is an elastic unit 1841 in the elastic connector 184. The elastic connector 184 includes a plurality of elastic units 1841 connected to each other, and each elastic unit 1841 can be stretched or compressed.

[0204] The elastic connector 184 includes at least one elastic unit 1841, and the elastic unit 1841 has a hollow area 1841d. The elastic unit 1841 may include two first elastic segments 1841a extending along the length direction of the elastic connector 184 and two second elastic segments 1841b extending along the width direction of the elastic connector 184. The two first elastic segments 1841a and the two second elastic segments 1841b enclose a hollow area 1841d. The hollow area 1841d may be formed in a rectangular shape, that is, it can be understood that the elastic unit 1841 has a "mouth"-shaped structure, and the hollow area 1841d provides a deformation space for the formation of the elastic connector 184 to increase the deformation amount of the elastic connector 184. In other embodiments, the hollow area 1841d may also be in a circular, triangular, diamond, or other shapes.

[0205] The elastic units 1841 may be continuously arranged along the length direction of the elastic connector 184. Specifically, the number of the elastic units 1841 may be two, three, four or more in the length direction of the elastic connector 184. Between two adjacent elastic units 1841, the second elastic segment 1841b of one elastic unit 1841 is connected to the second elastic segment 1841b of the other elastic unit 1841, thereby improving the stability and reliability of the overall structure of the elastic connector 184.

[0206] The elastic units 1841 may be arranged at intervals along the width direction of the elastic connector 184. Specifically, along the width direction of the elastic connector 184, the number of the elastic units 1841 may be two, three, four or more. Between two adjacent elastic units 1841, the first elastic segment 1841a of one elastic unit 1841 may be connected to the first elastic segment 1841a of another elastic unit 1841 through a third elastic segment 1841c. The intervals between adjacent elastic units 1841 provide space for the deformation of the elastic units 1841 in their own width direction Y, so as to increase the deformation amount of each elastic unit 1841, thereby allowing the elastic connector 184 to be extended or compressed as the width of the rotating shaft assembly changes, so as to enable the electronic device 100 to switch between the unfolded state, the first folded state and the second folded state.

[0207] like Fig.21 As shown, Fig.21 1 is a partial schematic diagram of an elastic connector 184 in another embodiment of the present application. The elastic connector 184 includes a first elastic layer 1842 and a second elastic layer 1843 along its thickness direction. The first elastic layer 1842 and the second elastic layer 1843 each have one or more elastic units 1841 as described above. Among them, the hollow area of ​​the first elastic layer 1842 and the hollow area 1841d in the second elastic layer 1843 are staggered, that is, along the thickness direction Z of the elastic connector 184, the hollow area 1841d of the elastic unit 1841 in the first elastic layer 1842 is located on one side of the first elastic section 1841a of the elastic unit 1841 in the second elastic layer 1843, so that the hollow area 1841d of the first elastic layer 1842 is not connected to the hollow area 1841d of the second elastic layer 1843.

[0208] As mentioned above, the first decorative plate 181, the second decorative plate 182, and the third decorative plate 183 are connected by the elastic connector 184 to realize an integrated design. It can be seen that the elastic connector 184 also plays a role in shielding and protecting the internal structure of the shaft assembly 10. The hollow area 1841d of the elastic connector 184 penetrates the elastic connector 184 along the thickness direction of the elastic connector 184 (such as Fig.19As shown), a gap is formed connecting the inside of the shaft assembly 10 and the outside of the shaft assembly 10. That is to say, although the hollow area 1841d provides space for elastic deformation of the elastic connector 184, it reduces the protective effect of the elastic connector 184 on the structure inside the shaft assembly 10. The structure inside the shaft assembly 10 may extend into the interior of the shaft assembly 10 through the hollow area 1841d and interfere with and collide with the internal structure, thereby affecting the normal use of the shaft assembly 10; at the same time, due to the existence of the above-mentioned gap, the overall refinement of the shaft assembly 10 is affected, which is not conducive to the normal use of the shaft assembly 10.

[0209] By dividing the elastic connector 184 into a two-layer structure of a first elastic layer 1842 and a second elastic layer 1843, the two elastic layers can respectively shield each other's hollow areas 1841d, so that there is no gap connecting the inside of the shaft assembly 10 with the outside of the shaft assembly 10 on the elastic connector 184, so as to improve the protective effect of the elastic connector 184 on the internal structure of the shaft assembly 10 and improve the overall refinement of the shaft assembly 10. On the other hand, the above design allows the hollow areas 1841d of the two elastic layers to still provide elastic deformation space for the corresponding elastic units 1841, thereby ensuring the overall elastic deformation of the elastic connector 184.

[0210] Continue as Fig.21 As shown, the first elastic layer 1842 and the second elastic layer 1843 can be bonded by an adhesive layer 185, and the material of the adhesive layer 185 can be a structural adhesive, such as epoxy resin, or the adhesive layer 185 can also be a double-sided tape. The connection between the first elastic layer 1842 and the second elastic layer 1843 is achieved through the adhesive layer 185, which is conducive to improving the stability and reliability of the connection between the first elastic layer 1842 and the second elastic layer 1843.

[0211] like Fig. 22 As shown, Fig. 22 1 is a partial schematic diagram of a shaft assembly 10 in another embodiment of the present application. The first decorative plate 181 includes a first plate 1811 and a second plate 1812 along its thickness direction Z, the second decorative plate 182 includes a third plate 1821 and a fourth plate 1822 along its thickness direction Z, and the third decorative plate 183 includes a fifth plate 1831 and a sixth plate 1832 along its thickness direction Z. The first plate 1811, the third plate 1821, and the fifth plate 1831 are connected by a first elastic layer 1842, and the second plate 1812, the fourth plate 1822, and the sixth plate 1832 are connected by a second elastic layer 1843.

[0212] Among them, along the thickness direction Z of the first decorative plate 181 , the first plate 1811 and the second plate 1812 , the third plate 1821 and the fourth plate 1822 , and the fifth plate 1831 and the sixth plate 1832 can all be connected via the adhesive layer 185 .

[0213] During the assembly of the shaft assembly 10, the first plate 1811, the third plate 1821 and the fifth plate 1831 can be connected into an integral structure through the first elastic layer 1842, and the second plate 1812, the fourth plate 1822 and the sixth plate 1832 can be connected into an integral structure through the second elastic layer 1843, and then the two integral structures are connected together through the adhesive layer 185, thereby simplifying the assembly process of the shaft assembly 10 and reducing the difficulty of assembling the shaft assembly 10.

[0214] On the other hand, each decorative panel has a multi-layer structure including an adhesive layer 185. Taking the adhesive layer 185 as an example, which is a structural adhesive, the structural adhesive can provide a certain strength for the decorative panel after curing, thereby improving the stability of the decorative panel structure, which is beneficial to extending the service life of the decorative panel and improving the overall stability and reliability of the shaft assembly 10.

[0215] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotating shaft assembly, characterized in that: include: Axle seat; A support plate assembly, the support plate assembly is used to support a flexible display screen of an electronic device, the support plate assembly at least comprising main support plates arranged on both sides of the shaft seat along the width direction of the rotating shaft assembly; Wherein, the rotating shaft assembly further comprises an elastic member, wherein the elastic member is located between the main support plate and the shaft seat along the width direction of the rotating shaft assembly, and the main support plate is rotatably connected to the shaft seat through the elastic member; When the main support plate rotates relative to the shaft seat in a first direction so that the shaft assembly switches from an unfolded state to a first folded state, the elastic member stretches to move the main support plate away from the shaft seat; when the main support plate rotates relative to the shaft seat in a second direction so that the shaft assembly switches from an unfolded state to a second folded state, the elastic member contracts to move the main support plate closer to the shaft seat; The first direction is opposite to the second direction.

2. The shaft assembly according to claim 1, characterized in that: When the rotating shaft assembly is in the first folded state, a first space for accommodating a bending area of ​​the flexible display screen is provided between the main support plate and the shaft seat; When the rotating shaft assembly is in the second folded state, a second space is provided between the main support plate and the shaft seat, and the bending area of ​​the flexible display screen is used to cover a side of the main support plate and the shaft seat away from the second space; The arc length of the first space is greater than the arc length of the second space.

3. The shaft assembly according to claim 1, characterized in that: The elastic member includes a hollow portion; The hollow portion penetrates the elastic member along a thickness direction of the elastic member.

4. The shaft assembly according to claim 3, characterized in that: The elastic member includes a first elastic portion, a second elastic portion and a third elastic portion; The hollow portion is arranged on the first elastic portion, the first elastic portion is connected to the shaft seat through the second elastic portion, and the first elastic portion is connected to the main support plate through the third elastic portion.

5. The shaft assembly according to claim 1, characterized in that: Along the length direction of the rotating shaft assembly, a plurality of elastic members are connected between the main supporting plate and the shaft seat.

6. The shaft assembly according to claim 1, characterized in that: The support plate assembly further comprises a secondary support plate disposed between the main support plate and the shaft seat along the width direction of the rotating shaft assembly; Along the width direction of the rotating shaft assembly, the elastic members are provided on both sides of the auxiliary support plate, and one end of the auxiliary support plate is rotatably connected to the main support plate on the same side through the elastic member; the other end of the auxiliary support plate is rotatably connected to the shaft seat through the elastic member.

7. The shaft assembly according to claim 2, characterized in that: The rotating shaft assembly further comprises brackets arranged on both sides of the shaft seat along the width direction of the rotating shaft assembly, and push rod assemblies arranged on both sides of the shaft seat along the width direction of the rotating shaft assembly; The push rod assembly includes a first push rod, one end of which is rotatably connected to the bracket on the same side, and the other end of the first push rod is rotatably connected to the shaft seat. The first push rod can also slide relative to the shaft seat along the length direction of the rotating shaft assembly.

8. The shaft assembly according to claim 7, characterized in that: The shaft seat is provided with a guide rail extending along the length direction of the rotating shaft assembly and a moving member connected to the guide rail; One end of the first push rod is rotatably connected to the moving member; when the shaft assembly switches between the first folded state, the unfolded state and the second folded state, the moving member can move along the guide rail to change the angle between the first push rod and the width direction of the shaft assembly.

9. The shaft assembly according to claim 8, characterized in that: When the rotating shaft assembly is in the first folded state, a first angle is formed between the first push rod and the width direction of the rotating shaft assembly; When the rotating shaft assembly is in the second folded state, a second angle is formed between the first push rod and the width direction of the rotating shaft assembly; The first angle is smaller than the second angle.

10. The shaft assembly according to claim 8, characterized in that: The first push rod has a first spherical portion and a second spherical portion at both ends respectively; The first spherical portion is rotatably connected to the bracket; The second spherical portion is rotatably connected to the moving member.

11. The shaft assembly according to claim 8, characterized in that: The support plate assembly further comprises a secondary support plate disposed between the main support plate and the shaft seat along the width direction of the rotating shaft assembly; The push rod assembly also includes a second push rod; One end of the second push rod is rotatably connected to the auxiliary support plate on the same side, and the other end of the second push rod is rotatably connected to the shaft seat and can slide relative to the shaft seat along the length direction of the rotating shaft assembly.

12. The shaft assembly according to claim 11, characterized in that: The first push rod is used to support the bracket on the same side, and to limit the main support plate connected to the bracket to the position of the first folding state or the position of the second folding state through the bracket; The second push rod is used to support the auxiliary support plate on the same side, and limit the auxiliary support plate to the position of the first folding state or the position of the second folding state; In the first folded state, the main support plate, the auxiliary support plate and the shaft seat enclose the first space, and in the second folded state, the main support plate, the auxiliary support plate and the shaft seat enclose the second space.

13. The shaft assembly according to claim 11, characterized in that: The shaft seat is provided with a matching piece, and the matching piece is fixedly connected to the moving piece; The mating piece has a mating groove along the length direction of the rotating shaft assembly, and one end of the second push rod is rotatably connected to the mating groove. When the rotating shaft assembly switches between the first folding state, the unfolding state and the second folding state, the second push rod can move along the mating groove to change the angle between the second push rod and the width direction of the rotating shaft assembly.

14. The shaft assembly according to claim 13, characterized in that: When the rotating shaft assembly is in the first folded state, a third angle is formed between the second push rod and the width direction of the rotating shaft assembly; When the rotating shaft assembly is in the second folded state, a fourth angle is formed between the second push rod and the width direction of the rotating shaft assembly; The third angle is smaller than the fourth angle.

15. The shaft assembly according to claim 13, characterized in that: The second push rod has a third spherical portion and a fourth spherical portion at both ends thereof; The third spherical portion is rotatably connected to the auxiliary support plate; The fourth spherical portion is rotatably disposed in the fitting groove, and the fourth spherical portion is movable along the fitting groove.

16. The shaft assembly according to claim 1, characterized in that: The rotating shaft assembly further comprises brackets arranged on both sides of the shaft seat along the width direction of the rotating shaft assembly, and the brackets are rotatably connected to the shaft seat; The bracket is rotatably connected to the main support plate on the same side through at least one flexible member.

17. The shaft assembly according to claim 16, characterized in that: The bracket includes a first body portion and a second body portion; The flexible member is accommodated in the first main body; the second main body is connected to the first main body, and the thickness of the second main body gradually decreases in a direction away from the first main body; When the rotating shaft assembly switches between the first folding state and the second folding state, the main support plate can rotate toward the side close to the bracket until the main support plate abuts against the second body portion.

18. The shaft assembly according to any one of claims 1 to 17, characterized in that: The rotating shaft assembly further comprises brackets arranged on both sides of the shaft seat along the width direction of the rotating shaft assembly, the brackets are rotatably connected to the shaft seat, and the brackets are connected to a swing arm assembly; The shaft seat is provided with a sliding assembly, and the swing arm group is rotatably connected to the sliding assembly. When the swing arm group rotates relative to the sliding assembly, the sliding assembly can slide relative to the shaft seat.

19. The shaft assembly according to claim 18, characterized in that: The sliding assembly at least comprises a first sliding member, the first sliding member is provided with a first sliding groove, and the swing arm assembly comprises a connecting portion, the connecting portion is slidably disposed in the first sliding groove; The shaft seat has an installation space, the first sliding member is located in the installation space, and the first sliding member can extend out of the installation space during the rotation of the bracket along the first direction.

20. The shaft assembly according to claim 19, characterized in that: The sliding assembly further includes a second sliding member, which is slidably disposed in the installation space; The second sliding member is provided with a second sliding groove, and the first sliding member is slidably disposed in the first sliding groove. When the bracket rotates along the first direction, the second sliding member can extend out of the installation space.

21. The shaft assembly according to claim 20, characterized in that: When the rotating shaft assembly switches from the unfolded state to the second folded state, the bracket rotates along the second direction, and the connecting portion slides from the first end of the first slide slot to the direction close to the second end of the first slide slot; During the process of switching the rotating shaft assembly from the unfolded state to the first folded state, the bracket rotates along the first direction, the connecting portion slides from the first end of the first slide groove to the direction away from the second end of the first slide groove, the first sliding member slides along the second slide groove to the side away from the shaft seat, and the second sliding member can extend out of the installation space.

22. An electronic device, characterized in that: include: A rotating shaft assembly, wherein the rotating shaft assembly is the rotating shaft assembly according to any one of claims 1 to 21; A first shell and a second shell, wherein the first shell and the second shell are respectively connected to two sides of the rotating shaft assembly along a width direction; A flexible display screen, which covers one side of the hinge assembly, the first shell and the second shell in the thickness direction and is connected to the first shell and the second shell; When the electronic device is in a first folding state, the flexible display screen is accommodated between the first shell and the second shell; when the electronic device is in a second folding state, the flexible display screen is exposed on the outside of the first shell and the second shell.

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