Rotating shaft assembly, electronic device

Abstract

The application provides a rotating shaft assembly and an electronic device. The rotating shaft assembly comprises a base and two first rotating members with opposite rotating directions. The first rotating member comprises a first connecting end and a second connecting end arranged oppositely, the first connecting end is rotationally connected to the base, and the second connecting end is used for rotationally connecting a shell. The first rotating member is used for jointly bearing a flexible screen with the shell which can rotate around a first rotating axis. In an arrangement direction parallel to a second rotating axis of the two first rotating members, the two first rotating axes are located between the two second rotating axes. The rotating shaft assembly has a closed state in which the distance between the two first connecting ends is greater than the distance between the two second connecting ends. When the rotating shaft assembly is applied to the electronic device, only the positional relationship between the axis of the first rotating member and the axis of the shell needs to be designed, so that the two halves of the flexible screen can be in a pasting state in the closed state. The structure of the rotating shaft assembly can be simplified, and the number of creases generated by the bending of the flexible screen can be reduced or even eliminated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rotating shaft assemblies, and particularly relates to a rotating shaft assembly and an electronic device. BACKGROUND

[0002] The rotating shaft assembly is one of important components in a flexible electronic device, and is used for cooperating with a shell to jointly limit the shape of a flexible screen after being bent and closed. Part of electronic devices can eliminate the gap between two halves of the flexible screen after being closed, improve the appearance performance, and effectively protect the flexible screen, and thus are favored by the majority of users. However, the structure of the rotating shaft assembly applied to the electronic device is relatively complex. SUMMARY

[0003] In view of this, the first aspect of the application provides a rotating shaft assembly applied to an electronic device, the electronic device comprising a flexible screen and two shells, the rotating shaft assembly comprising a base and two first rotating members with opposite rotating directions, the first rotating member comprising oppositely arranged first and second connecting ends, the first connecting end being rotationally connected to the base, and the second connecting end being used for rotationally connecting the shell, and the first rotating member being used for jointly bearing the flexible screen with the shell which can rotate around a first rotating axis.

[0004] In the arrangement direction parallel to the second rotating axes of the two first rotating members, the two first rotating axes are located between the two second rotating axes; and the rotating shaft assembly has a closed state in which the distance between the two first connecting ends is greater than the distance between the two second connecting ends.

[0005] The rotating shaft assembly provided by the first aspect of the application first rotationally connects the first connecting ends of the two first rotating members to the base with opposite rotating directions, thereby providing a movement basis for the closed state of the rotating shaft assembly. Meanwhile, the second connecting ends of the first rotating members are rotationally connected to the shells, wherein the first rotating member can rotate around the second rotating axis, the shell can rotate around the first rotating axis, and the flexible screen is borne on the two shells and the two first rotating members, so that when the shell rotates, the first rotating member can be driven to rotate, thereby jointly driving the flexible screen to move.

[0006] Moreover, the application defines the positional relationship between the first rotating axis and the second rotating axis, so that in the arrangement direction parallel to the two second rotating axes, the two first rotating axes are located between the two second rotating axes. In other words, the second rotating axis does not coincide with the first rotating axis, that is, the rotation centers of the shell and the first rotating member do not coincide, the rotation center of the shell is arranged more inwardly, and the rotation center of the first rotating member is arranged more outwardly. It can also be understood that the first rotating axis is arranged inwardly relative to the second rotating axis, and the second rotating axis is arranged outwardly relative to the first rotating axis.

[0007] When the hinge assembly of the present application is applied to an electronic device and the electronic device moves, for example, when the electronic device is flattened from a flexible screen to a partially flexible screen attached, the shell rotates around the first rotation axis and the first rotating member rotates around the second rotation axis. When the shell rotates a certain angle, the connection between the first rotating member and the shell will also rotate by the same angle. Since the second rotation axis does not coincide with the first rotation axis, if the first rotating member also rotates by the same angle, the second connection end of the first rotating member cannot contact the connection between the first rotating member and the shell, and the movement cannot continue at this time. Since the first rotation axis is set inwardly and the second rotation axis is set outwardly, the first rotating member must rotate an angle greater than the rotation of the shell, that is, the first rotating member must rotate a certain angle more than the shell to ensure that the first rotating member is always connected to the shell.

[0008] Therefore, when the electronic device is in the closed state, with the flexible screen facing away from the base, it can be understood that the housing rotates the flexible screen 90°, turning the horizontally positioned flexible screen into a vertical position and bringing the left and right halves into contact. At this point, the two housings are also parallel, with the angle between them being 0°. Therefore, the two first rotating members must rotate at a larger angle, for example, greater than 90°, so that the angle between them is greater than 0°, to ensure that the first rotating members remain in contact with the housings. This ensures that the distance between the two first connecting ends on the side closest to the base is greater than the distance between the two second connecting ends on the side away from the base, thereby achieving the closed state of the hinge assembly, where the two first rotating members sandwich a "smaller at the top, larger at the bottom" space. This allows the flexible screen to bend more freely within this space on the side closest to the base, i.e., at its lower end. In other words, the curvature radius of the lower end of the flexible screen is larger, preventing excessive stress concentration at the bend, thereby reducing or even eliminating the number of creases in the flexible screen after bending, and improving its performance and lifespan.

[0009] In summary, this application only requires the use of a hinge assembly consisting of a base and two first rotating members. When the hinge assembly is applied to an electronic device, the positional relationship between the axis of the first rotating member and the axis of the housing is designed so that the two halves of the flexible screen fit together when closed, and the curvature radius of the lower bend of the flexible screen is increased. This not only simplifies the structure of the hinge assembly, reducing its cost and the number of components, but also reduces or even eliminates the number of creases, thereby improving the performance and lifespan of the flexible screen.

[0010] The second aspect of the present application provides an electronic device, including a flexible screen, two shells, and a hinge assembly as provided in the first aspect of the present application, at least parts of the two shells are respectively arranged on opposite sides of the hinge assembly, and the shells are rotatably connected to the first rotating part in the hinge assembly, and the flexible screen is arranged on one side of the two first rotating parts and the two shells.

[0011] The electronic device provided in the second aspect of the present application, by adopting the hinge assembly provided in the first aspect of the present application, can simplify the structure of the hinge assembly and the electronic device, reduce the cost and number of components of the electronic device, and make the electronic device present a shape in which the two halves of the flexible screen are in contact with each other when in a closed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the shaft assembly in an expanded state in one embodiment of the present application.

[0014] Figure 2 for Figure 1 Exploded diagram.

[0015] Figure 3 for Figure 1 side view.

[0016] Figure 4 This is a top view of a hinge assembly in an embodiment of the present application when it is applied to an electronic device and is in an unfolded state.

[0017] Figure 5 In one embodiment of this application Figure 4 Schematic diagram of a partial cross section along the AA direction.

[0018] Figure 6 This is a schematic diagram of the three-dimensional structure of the shaft assembly in a closed state in one embodiment of the present application.

[0019] Figure 7 for Figure 6 side view.

[0020] Figure 8 This is a top view of a hinge assembly in one embodiment of the present application when it is applied to an electronic device and is in a closed state.

[0021] Figure 9 In one embodiment of this application Figure 8 Schematic diagram of a partial cross section along direction BB.

[0022] Figure 10This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application.

[0023] Figure 11 for Figure 10 side view.

[0024] Figure 12 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application.

[0025] Figure 13 for Figure 12 side view.

[0026] Figure 14 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application.

[0027] Figure 15 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application.

[0028] Figure 16 for Figure 15 Exploded diagram.

[0029] Figure 17 Schematic diagram of a first matching portion and a second matching portion in one embodiment of the present application.

[0030] Figure 18 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application.

[0031] Figure 19 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application.

[0032] Figure 20 Schematic diagram of an exploded view of the first rotating shaft, the first matching portion, and the friction member in one embodiment of the present application.

[0033] Figure 21 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application.

[0034] Figure 22 for Figure 21 Partial exploded view.

[0035] Figure 23 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application.

[0036] Figure 24 for Figure 23 Partial exploded view.

[0037] Figure 25 This is a schematic diagram of the three-dimensional structure of an electronic device after removing the flexible screen in one embodiment of the present application.

[0038] Figure 26for Figure 25 Exploded diagram.

[0039] Figure 27 In another embodiment of the present application Figure 4 Schematic diagram of a partial cross section along the AA direction.

[0040] Figure 28 In another embodiment of the present application Figure 8 Schematic diagram of a partial cross section along direction BB.

[0041] Figure 29 In one embodiment of this application Figure 4 Schematic diagram of a partial cross section along the CC direction.

[0042] Figure 30 Schematic diagram of the exploded view of the second support member and the rotating shaft assembly in one embodiment of the present application.

[0043] Figure 31 for Figure 30 Schematic diagram of a partial cross section along the DD direction.

[0044] Figure 32 In another embodiment of the present application Figure 4 Schematic diagram of a partial cross section along the AA direction.

[0045] Description of labels:

[0046] Hinge assembly-1, electronic device-2, housing-3, flexible screen-4, base-10, rotation space-11, second rotating part-110, receiving space-12, first rotating member-20, first connecting end-201, second connecting end-202, assembly surface-203, first rotation axis-L1, second rotation axis-L2, assembly part-21, connecting part-22, first rotating part-220, protrusion-23, second rotating member-30, avoidance gap-31, second sliding part-32, third rotating member-40, third axis-L3, first sliding part-41, synchronization member-50, first matching part-51, first protrusion- 510, crest-511, first rotating shaft-60, flat structure-600, snap groove-601, sliding member-61, second matching portion-62, second protrusion-620, blocking member-63, first elastic member-64, second rotating shaft-65, second elastic member-66, friction member-67, mounting member-68, snap member-69, first supporting member-70, bracket-71, third elastic member-72, second supporting member-80, supporting portion-81, through hole-810, sliding portion-82, first portion-821, second portion-822, third portion-823, decorative member-90, installation space-91, accommodating space-92. DETAILED DESCRIPTION

[0047] The following are preferred implementations of the present application. It should be noted that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

[0048] Before introducing the technical solutions of the present application, the technical problems in the related technologies are introduced in detail.

[0049] Due to its rotational function, hinge assemblies are applicable in a wide variety of fields, such as door locks, vehicles, machinery manufacturing, and electronic equipment. The hinge assembly can connect two components via its two first rotating members, each of which can achieve rotation. The application of hinge assemblies in flexible electronic devices within electronic equipment is now illustrated.

[0050] Flexible screens, a key component in flexible electronic devices, are a key application technology for organic light-emitting diodes (OLEDs) and have seen significant development in recent years. Compared to traditional displays, flexible screens offer significant advantages, such as thinner and lighter weight, lower power consumption, and, thanks to their bendability and flexibility, their application scenarios are expanding. For example, several mass-produced mobile phones based on flexible screens have already appeared on the market. However, the flexible screen itself is a very thin, flexible light-emitting layer, and its product application requires a structure with a certain degree of rigidity to ensure user convenience. Structurally, the flexible screen's bending requires support from a rigid housing, with the two halves connected by a hinge assembly. The flexible screen deforms in response to the movement of the housing and hinge assembly, switching between an open and closed state. Therefore, the deformation of the flexible screen corresponds to the movement of the hinge assembly.

[0051] At present, the deformation of flexible screens is mainly divided into two schemes: inward folding of the flexible screen and outward folding of the flexible screen. Among them, inward folding refers to the scheme in which the display surfaces of the two halves of the flexible screen are close to each other and the hinge assembly is in a closed state, and the flexible screen is blocked by the shell. Its advantage is that the shell can effectively protect the flexible screen and reduce the impact of external impact and wear. Outward folding of the flexible screen refers to the scheme in which the flexible screen is exposed when the two shells are close to each other and the hinge assembly is in a closed state. Its advantage is that the bending angle of the flexible screen does not need to be too small, and the flexible screen does not need to be unfolded when half of the screen is used. For the scheme of inward folding of the flexible screen, when the flexible screen is folded inward, that is, when the hinge assembly and the electronic device are in a closed state, the flexible screen usually has two forms: U-shaped and water drop-shaped. Among them, the U-shaped screen refers to a flexible screen whose shape looks like the letter "U" when viewed from the side, and there is a certain gap between the two halves of the flexible screen. The water drop screen is a flexible screen whose shape looks like a water drop when viewed from the side. Because its waterdrop screen can make the two halves of the flexible screen away from the hinge assembly fit tightly after merging, thereby eliminating the gap between the two halves of the flexible screen, enhancing the appearance expression, reducing the risk of damage to the flexible screen, and effectively protecting the flexible screen, it is now loved by the majority of users.

[0052] However, in order to achieve the two halves of the flexible screen fitting together when closed, more factors need to be considered from the perspective of the hinge assembly. This leads to the complicated structure of the hinge assembly in the related technology and the large number of parts, which makes the control more difficult and the cost higher, affecting the popularity of electronic devices.

[0053] In view of this, in order to solve the above problems, this application provides a shaft assembly and an electronic device. Please refer to Figures 1-9 , Figure 1 This is a schematic diagram of the three-dimensional structure of the shaft assembly in an expanded state in one embodiment of the present application. Figure 2 for Figure 1 Exploded diagram. Figure 3 for Figure 1 side view. Figure 4 This is a top view of a hinge assembly in an embodiment of the present application when it is applied to an electronic device and is in an unfolded state. Figure 5 In one embodiment of this application Figure 4 Schematic diagram of a partial cross section along the AA direction. Figure 6 This is a schematic diagram of the three-dimensional structure of the shaft assembly in a closed state in one embodiment of the present application. Figure 7 for Figure 6 side view. Figure 8 This is a top view of a hinge assembly in one embodiment of the present application when it is applied to an electronic device and is in a closed state. Figure 9 In one embodiment of this application Figure 8 Schematic diagram of a partial cross section along direction BB.

[0054] This embodiment provides a hinge assembly 1 for use with an electronic device 2. The electronic device 2 includes a flexible screen 4 and two housings 3. The hinge assembly 1 includes a base 10 and two first rotating members 20 that rotate in opposite directions. The first rotating member 20 includes a first connecting end 201 and a second connecting end 202 that are oppositely disposed. The first connecting end 201 is rotatably connected to the base 10, and the second connecting end 202 is used to rotatably connect to the housing 3. The first rotating member 20 is used to support the flexible screen 4 together with the housing 3 that is rotatable about a first rotation axis L1. In an arrangement direction parallel to the second rotation axes L2 of the two first rotating members 20, the two first rotation axes L1 are located between the two second rotation axes L2. The hinge assembly 1 has a closed state in which the distance between the two first connecting ends 201 is greater than the distance between the two second connecting ends 202.

[0055] This embodiment is schematically illustrated by applying the hinge assembly 1 to the electronic device 2. The hinge assembly 1 is used to cooperate with the housing 3 of the electronic device 2 to rotate the flexible screen 4 along a predetermined trajectory, ultimately obtaining the desired shape. Therefore, the electronic device 2 can also be referred to as a flexible electronic device. For the electronic device 2, it includes a flexible screen 4 and two housings 3, but this does not mean that the electronic device 2 only includes the flexible screen 4 and the housing 3. The electronic device 2 may also include other components, such as circuit boards, batteries, cameras, and the like. However, in this embodiment, the components that are strongly related to the hinge assembly 1 are the housing 3 and the flexible screen 4, so only the relationship between the hinge assembly 1 and the flexible screen 4 and the housing 3 is introduced.

[0056] The hinge assembly 1 includes a base 10, which generally serves as a support and connection for other components within the hinge assembly 1 and is a fundamental component of the hinge assembly 1. Materials for the base 10 include, but are not limited to, plastic and metal. The present embodiment does not limit the shape and structure of the base 10 provided; it may be any shape as long as other components can be assembled onto the base 10.

[0057] In addition to the base 10, the hinge assembly 1 also includes two first rotating members 20. Both first rotating members 20 are rotatably connected to the base 10. That is, the first rotating members 20 can rotate relative to the base 10, thereby driving the flexible screen 4 to move. This embodiment does not limit the shape, structure, material, and other parameters of the two first rotating members 20, as long as they can rotate.

[0058] The two first rotating members 20 rotate in opposite directions. Figure 1As shown in D1 in the figure. For example, when one first rotating member 20 rotates clockwise, the other first rotating member 20 rotates counterclockwise. Alternatively, when one first rotating member 20 rotates counterclockwise, the other first rotating member 20 rotates clockwise. In this way, when the two first rotating members 20 rotate, they can rotate toward each other, achieving the two halves of the flexible screen 4 being attached, thereby providing the movement foundation for the subsequent closed state.

[0059] Optionally, the two first rotating members 20 may be disposed opposite each other, which can be understood as at least partially spaced apart, i.e., a gap exists between the two first rotating members 20. This reduces the likelihood of collision between the two first rotating members 20 during rotation, facilitates the connection of other components to the first rotating members 20, and allows for assembly space for other components (e.g., the first support member). Of course, in other embodiments, the two first rotating members 20 may also be disposed in contact with each other. This embodiment is merely schematically illustrated with the two first rotating members 20 disposed opposite each other.

[0060] Optionally, the two first rotating members 20 are symmetrically arranged to simplify the structure of the shaft assembly 1, reduce costs, and improve the consistency of the rotation of the two first rotating members 20. Specifically, one first rotating member 20 is extended in a direction away from the other first rotating member 20. Further optionally, the two first rotating members 20 are centrally symmetrically arranged, so that part of the structure of the two first rotating members 20 occupies the same area of ​​the base 10. This not only reduces the size of the shaft assembly 1 and makes the shaft assembly 1 more compact, but also the parts of the two first rotating members 20 located in the same area of ​​the base 10 can be used to carry other components, such as the first support member. The content of using the first rotating member to carry the first support member will be explained below in this application.

[0061] In addition to being rotatably connected to the base 10, the first rotating member 20 can also be rotatably connected to the housing 3, so that the first rotating member 20 can not only rotate relative to the base 10, changing the angle between the first rotating member 20 and the base 10, but also rotate relative to the housing 3, thereby changing the angle between the first rotating member 20 and the housing 3. In other words, the first rotating member 20 is first connected to the housing 3 so that the housing 3 and the first rotating member 20 will not separate during the rotation process. Secondly, the first rotating member 20 and the housing 3 are not fixedly connected, but are rotatably connected. The first rotating member 20 can rotate around the connection O between the first rotating member 20 and the housing 3 (see Figure 5 and Figure 9 ) rotates, thereby changing the angle between the first rotating member 20 and the shell 3.

[0062] In addition, for the first rotating member 20, the first rotating member 20 includes a first connecting end 201 and a second connecting end 202 that are arranged opposite to each other. The first connecting end 201 is used to rotate and connect to the base 10, and the second connecting end 202 is used to rotate and connect to the housing 3. Therefore, the extension direction of the first rotating member 20 (such as Figure 1-3 The direction shown by D2 in the figure is the direction from the first connection end 201 to the second connection end 202, or it can be the direction from the second connection end 202 to the first connection end 201.

[0063] Optionally, the first rotating member 20 can be directly rotatably connected to the shell 3, that is, the first rotating member 20 is directly rotatably connected to the shell 3. Alternatively, the first rotating member 20 is indirectly rotatably connected to the shell 3. In other words, the first rotating member 20 can be rotatably connected to the shell 3 through other components such as the second rotating member, that is, the first rotating member 20 can be rotatably connected to other components, and the other components are then connected to the shell 3. This can reduce the difficulty of preparing the shell 3, and the technical solution of this embodiment can be implemented using the existing shell 3 structure. Further optionally, this embodiment does not limit the parameters such as the shape, structure, and material of the shell 3, as long as it can be rotatably connected to the first rotating member 20. Specifically, the shell 3 includes but is not limited to a middle frame, a rear shell, and the like.

[0064] The flexible screen 4 can be positioned on one side of the two first rotating members 20 and the two housings 3. This allows the flexible screen 4 to rotate as the housings 3 and the first rotating members 20 rotate. Alternatively, the flexible screen 4 can be positioned directly on the first rotating members 20 and the housings 3, or a separate component can be positioned on at least one of the first rotating members 20 and the housings 3, with the flexible screen 4 then positioned on that component. This embodiment does not limit the placement of the flexible screen 4; any method is sufficient to ensure that the flexible screen 4 can follow the movement of the housings 3 and the first rotating members 20.

[0065] The housing 3 can be rotated by an external force provided by a user or other components. When the housing 3 rotates, since the housing 3 is connected to the first rotating member 20, the first connecting member and the housing 3 will not be separated. The rotation of the housing 3 can drive the first rotating member 20 to rotate. Figure 5 and Figure 9As shown, during the entire rotation process, the first rotating member 20 rotates around the second rotation axis L2, and the shell 3 rotates around the first rotation axis L1. In other words, the shell 3 will rotate around a rotation center, and the extension line of the rotation center in the rotation direction perpendicular to the shell 3 is the first rotation axis L1. As for the position of the first rotation axis L1, this embodiment does not limit it, and it can be designed accordingly according to the actual product. The first rotating member 20 will also rotate around a rotation center when rotating, and the extension line of the rotation center in the rotation direction perpendicular to the first rotating member 20 is the second rotation axis L2. As for the position of the second rotation axis L2, this embodiment does not limit it, and it can be designed accordingly according to the actual product. In addition Figure 5 and Figure 9 The middle dotted circle represents the motion trajectory of the first connecting end 201 around the second rotation axis L2.

[0066] Furthermore, this embodiment defines the relationship between the second rotation axis L2 and the first rotation axis L1. Since this embodiment has two first rotating members 20 and two housings 3, it accordingly has two second rotation axes L2 and two first rotation axes L1. Specifically, in a direction parallel to the two second rotation axes L2, the two first rotation axes L1 are located between the two second rotation axes L2. That is, the orthographic projections of the two first rotation axes L1 onto the plane formed by the two second rotation axes L2 lie between the two second rotation axes L2. In other words, the second rotation axis L2 and the first rotation axis L1 do not coincide. This means that the rotation center of the housing 3 and the first rotating member 20 do not coincide; the rotation center of the housing 3 is positioned more inward, while the rotation center of the first rotating member 20 is positioned more outward. Alternatively, the first rotation axis L1 is positioned inward relative to the second rotation axis L2, while the second rotation axis L2 is positioned outward relative to the first rotation axis L1. This positional relationship between the second rotation axis L2 and the first rotation axis L1 provides a foundation for subsequent movement.

[0067] Once the aforementioned structures, as well as their positional and connection relationships, are established, the desired waterdrop screen design with two flexible screen halves aligned can be achieved. Specifically, when the hinge assembly 1 described above is applied to an electronic device 2, the electronic device 2 can have multiple states throughout its movement, including two special states: an extended state and a closed state. It is worth noting that since the hinge assembly 1 is applied to the electronic device 2, if the electronic device 2 has an extended state and a closed state, the hinge assembly 1 also has extended and closed states. Therefore, the extended state of the electronic device 2 and the extended state of the hinge assembly 1 are effectively the same concept, and the closed state of the electronic device 2 and the closed state of the hinge assembly 1 are effectively the same concept. For the electronic device 2, the extended state refers to the state in which the flexible screen 4 is flattened, that is, the entire surface of the flexible screen 4 is flush. In other words, the flexible screen 4 can be divided into two halves, the left and right halves of which form a 180° angle. The closed state refers to the state in which the flexible screen 4, driven by the first rotating member 20 and the housing 3, has rotated 90°. At this point, the left and right halves of the flexible screen 4 are partially parallel and aligned, with the angle between them being 0°. For the shaft assembly 1, the expanded state refers to the state in which the extension direction of the first rotating member 20 is parallel to the arrangement direction of the two first rotating members 20. The closed state refers to the state in which the distance between the two first connecting ends 201 is greater than the distance between the two second connecting ends 202, and an angle is formed between the two first rotating members 20. In other words, the two first rotating members 20 are not arranged in parallel, but are arranged at an angle.

[0068] like Figure 5 and Figure 9 As shown, when the electronic device 2 moves from the expanded to the closed state, external forces applied to the housing 3 by a user or other components cause the housing 3 to rotate about the first rotation axis L1. Since the housing 3 is connected to the first rotating member 20 and the first rotation axis L1 is not located at the connection O between the housing 3 and the first rotating member 20, the first rotating member 20 will also rotate relative to the base 10 about the second rotation axis L2 when the housing 3 rotates. When the housing 3 rotates a certain angle, the connection O between the first rotating member 20 and the housing 3 also rotates by the same angle. Because the second rotation axis L2 does not coincide with the first rotation axis L1, if the first rotating member 20 also rotates by the same angle, the second connecting end 202 of the first rotating member 20 will not be able to contact the connection O between the first rotating member 20 and the housing 3, and the movement will not continue. Furthermore, because the first rotation axis L1 is positioned inward and the second rotation axis L2 is positioned outward, the first rotating member 20 must rotate a greater angle than the housing 3—that is, the first rotating member 20 must rotate a certain angle more than the housing 3—to ensure that the first rotating member 20 remains connected to the housing 3.

[0069] Therefore, when the electronic device 2 is in the closed state, i.e., the flexible screen 4 on the side away from the base 10 is attached, it can be understood that the shell 3 drives the flexible screen 4 to rotate by 90°, so that the horizontally arranged flexible screen 4 becomes vertically arranged, and the left and right halves of the flexible screen 4 are attached. At this time, the two shells 3 are also arranged in parallel, i.e., the angle between the two shells 3 is 0°. Therefore, the angle of rotation of the two first rotating members 20 is larger, for example, greater than 90°, so that the angle between the two first rotating members 20 is greater than 0°, so that the first rotating member 20 always rotates the connecting shell 3. In other words, when the electronic device 2 is in the unfolded state, the first rotating member 20 is arranged in parallel with the shell 3, and the included angle is 180°, but when the electronic device 2 is in the closed state, the included angle between the first rotating member 20 and the shell 3 is greater than 180°. This will make the distance between the two first connecting ends 201 on the side close to the base 10 greater than the distance between the two second connecting ends 202 on the side away from the base 10, so as to realize the closed state of the two first rotating members 20 clamped to form the "small upper and large lower" space shape of the rotating shaft assembly 1. Therefore, the two halves of the flexible screen 4 will also form a shape of "small upper and large lower" at the non-attached position. At this time, the shape of the flexible screen 4 is similar to a water droplet, so it is also commonly called a water droplet screen.

[0070] In addition, the flexible screen 4 on the side close to the base 10, i.e., the lower end of the flexible screen 4, can have a larger space for bending within this space. In other words, the curvature radius of the lower end of the flexible screen 4 is larger, which prevents the stress from being too concentrated at the bending position of the flexible screen 4, thereby reducing or even eliminating the number of creases generated by the bending of the flexible screen 4, and improving the use performance and service life of the flexible screen 4.

[0071] In summary, the embodiment only needs to use the rotating shaft assembly 1 composed of the base 10 and the two first rotating members 20, so that when the rotating shaft assembly 1 is applied to the electronic device 2, only the positional relationship between the axis of the first rotating member 20 and the axis of the shell 3 needs to be designed, so that the closed state can present the shape of the water droplet screen, i.e., the shape of the two halves of the flexible screen 4 being attached, and the curvature radius of the lower end of the flexible screen 4 can also be increased. In this way, not only can the structure of the rotating shaft assembly 1 be simplified, the cost and the number and weight of the components of the rotating shaft assembly 1 be reduced, but also the matching of the components can be reduced, the control difficulty can be reduced, and the popularity of the electronic device 2 can be improved. The number of creases can also be reduced or even eliminated, and the use performance and service life of the flexible screen 4 can be improved.

[0072] Optionally, in actual production, the specific angle of rotation of the first rotating member 20 can be adjusted by controlling the positions of the first axis and the second axis according to the needs, so as to adjust the shape of the water droplet screen.

[0073] Please refer to Figure 5 and Figure 9In this embodiment, when the rotating shaft assembly 1 is in a closed state, in an arrangement direction perpendicular to the two second rotating axes L2 , the second rotating axis L2 is closer to the second connecting end 202 than the first rotating axis L1 .

[0074] Regarding the positional relationship between the second rotation axis L2 and the first rotation axis L1, in addition to being positioned between the two first rotation axes L1 in a direction parallel to the two second rotation axes L2, this embodiment can also define the second rotation axis L2 and the first rotation axis L1 in other directions. In a direction perpendicular to the two second rotation axes L2, the second rotation axis L2 of the first rotating member 20 is positioned higher, while the first rotation axis L1 of the housing 3 is positioned lower. In other words, when the hinge assembly 1 is in the closed state, the second rotation axis L2 is closer to the second connection end 202 than the first rotation axis L1.

[0075] Because the two first rotation axes L1 are located between the two second rotation axes L2 in a direction parallel to the two second rotation axes L2, i.e., in the horizontal direction, with the first rotation axis L1 positioned more inward and the second rotation axis L2 positioned more outward, the distance between the first rotation axis L1 and the connection O between the first rotating member 20 and the housing 3 is greater than the distance between the second rotation axis L2 and the connection O between the first rotating member 20 and the housing 3. When the housing 3 and the first rotating member 20 rotate by a certain angle, the height change of the housing 3 in a direction perpendicular to the arrangement of the two second rotation axes L2, i.e., in the vertical direction, is greater than the height change of the first rotating member 20. Therefore, in this embodiment, the first rotation axis L1 is located above the second rotation axis L2. As a result, when the electronic device 2 moves from the unfolded state to the closed state, the height change of the first rotating member 20 and the housing 3 in a direction perpendicular to the arrangement of the two second rotation axes L2 is the same, thereby ensuring that the first rotating member 20 remains rotationally connected to the housing 3.

[0076] Of course, other technical solutions can be used in other embodiments to address the height variation issue. Optionally, the dimension of the first rotating member 20 in its extension direction is variable, meaning that the dimension of the first rotating member 20 in its extension direction can be extended or shortened. When the housing 3 rotates a certain angle, the first rotating member 20 can not only rotate further but also adaptively extend or shorten to compensate for the vertical displacement difference of the first rotating member 20, thereby ensuring that the first rotating member 20 can always be rotatably connected to the housing 3.

[0077] Please refer to Figure 10-11 , Figure 10 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application. Figure 11 for Figure 10In this embodiment, the shaft assembly 1 further includes two second rotating members 30, one end of the second rotating member 30 is rotatably connected to the second connecting end 202, and the other end is used to connect to the housing.

[0078] In addition to the base 10 and the first rotating member 20, the hinge assembly 1 may also include a second rotating member 30. One end of the second rotating member 30 is rotatably connected to the second connection end 202 of the first rotating member 20, and the other end is connected to the housing. Rotation of the first rotating member 20 relative to the second rotating member 30 can be understood as rotation of the first rotating member 20 relative to the housing, thereby indirectly rotating the first rotating member 20 and connecting it to the housing, thereby simplifying the design of the housing. Furthermore, this embodiment does not impose any restrictions on the material, shape, or structure of the second rotating member 30; any material, shape, or structure is sufficient as long as it can achieve the rotation and connection functions of the second rotating member 30.

[0079] Optionally, the second connecting end 202 and the second rotating member 30 can be rotated via a rotating shaft. For example, a rotating hole or a rotating groove can be provided on the second connecting end 202 and the second rotating member 30, and part of the rotating shaft can be disposed in the rotating hole or the rotating groove of the second connecting end 202 and the second rotating member 30, thereby enabling the second connecting end 202 to be rotatably connected to the second rotating member 30.

[0080] Optionally, the "connection" between the second rotating member 30 and the shell includes but is not limited to other connection methods such as fixed connection or detachable connection. When the second rotating member 30 is fixedly connected to the shell, the second rotating member 30 and the shell 3 are an integral structure, that is, the second rotating member 30 and the shell are prepared through the same process, but for ease of understanding, the second rotating member 30 and the shell 3 are artificially named differently. When the second rotating member 30 is detachably connected to the shell, the second rotating member 30 and the shell can be detachably connected by opening screw holes on the second rotating member 30 and the shell, and then installing screws in the screw holes. Of course, in other embodiments, detachable connection can also be achieved by means of a snap connection or the like. Through the connection between the second rotating member 30 and the shell, the consistency of the rotation angles of the two can be ensured, that is, the rotation angle of the second rotating member 30 is the rotation angle of the shell, so that the shell shakes less and the stability of the shell rotation is improved.

[0081] Alternatively, as Figure 11 As shown, one end of one first rotating member 20 facing away from the other first rotating member 20 protrudes from the base 10. In other words, the first rotating member 20 can protrude from the base 10 in its extension direction, reducing the difficulty of the first rotating member 20 rotating and connecting to the housing or the second rotating member 30. Further optionally, the second connecting end 202 protrudes from the base 10.

[0082] Please refer again Figure 10In this embodiment, when the hinge assembly 1 is in the unfolded state, a clearance gap 31 is provided between the surface of the first rotating member 20 that faces away from the mounting surface 203 and the second rotating member 30. The flattened state of the hinge assembly 1 has been described in detail above and will not be further elaborated on in this embodiment. When the hinge assembly 1 is in the unfolded state, the vertically aligned first and second rotating members 20 and 30 can have a clearance gap 31 provided between the surface of the first rotating member 20 that faces away from the mounting surface 203 and the second rotating member 30. In other words, a gap exists between the second rotating member 30 and the first rotating member 20. Because the second rotating member 30 rotates a greater angle relative to the housing 3, the relationship between the second rotating member 30 and the housing 3 does not remain stationary. The second rotating member 30 rotates relative to the housing 3, specifically, it rotates toward the first rotating member 20. Therefore, the clearance gap 31 provided between the first and second rotating members 20 and 30 in the unfolded state prevents the hinge assembly 1 from getting stuck during movement, ensuring smooth and safe movement.

[0083] Please refer again Figure 11 In this embodiment, the first rotating member 20 has an assembly surface 203 for assembling the flexible screen, and at least part of the second rotating member 30 is arranged on a side close to the surface opposite to the assembly surface 203.

[0084] The first rotating member 20 has an assembly surface 203 for mounting the flexible screen. The flexible screen can be mounted directly on the assembly surface 203 or via other components. Therefore, the assembly surface 203 can also be understood as the surface of the first rotating member 20 that is closest to the flexible screen. In other words, the assembly surface 203 is the top surface of the first rotating member 20.

[0085] Regarding the position of the second rotating member 30, at least a portion of the second rotating member 30 can be positioned near the side of the surface facing away from the assembly surface 203. Alternatively, at least a portion of the second rotating member 30 can be vertically aligned with the first rotating member 20, perpendicular to the direction in which the two first rotating members 20 extend. This reduces the size of the shaft assembly 1 in the direction in which the first rotating member 20 extends, making the shaft assembly 1 more compact. In other words, a portion of the second rotating member 30 is positioned on the lower surface of the first rotating member 20.

[0086] In addition, the "at least part of the second rotating member 30 is arranged on the side close to the surface away from the assembly surface 203" mentioned above can be understood as all the second rotating members 30 are arranged on the side close to the surface away from the assembly surface 203, and at this time, the second rotating members 30 are also rotationally connected to the side of the first rotating member 20 away from the assembly surface 203. Or part of the second rotating members 30 are arranged on the side close to the surface away from the assembly surface 203, and the rest of the second rotating members 30 are arranged on the other side of the first rotating member 20. At this time, the second rotating members 30 can be arranged on the end of the first rotating member 20 away from the other first rotating member 20. The present embodiment only schematically illustrates that all the second rotating members 30 are arranged on one side of the first rotating member 20.

[0087] Please refer again to Figure 2 In the present embodiment, the base 10 is provided with a rotating space 11 on one side, the first rotating member 20 includes an assembly part 21 and a connecting part 22 arranged on one side of the assembly part 21, the connecting part 22 has a first connecting end 201, and the assembly part 21 has a second connecting end 202; the outer peripheral side wall of the connecting part 22 is provided with a first rotating part 220, and the inner side wall of the rotating space 11 is provided with a second rotating part 110, and the first rotating part 220 cooperates with the second rotating part 110 to rotationally connect the first rotating member 20 to the base 10.

[0088] After introducing the relationship between the first rotating member 20 and the second rotating member 30, and the relationship between the second rotating member 30 and the shell 3, the present embodiment will continue to introduce the relationship between the base 10 and the first rotating member 20. The present embodiment can be arranged on one side of the base 10 to set a rotating space 11, and at least part of the first rotating member 20 is arranged in the rotating space 11, so as to realize the purpose of rotationally connecting the first rotating member 20 to the base 10, and also can reduce the overall thickness of the rotating shaft assembly 1, so that the rotating shaft assembly 1 is more compact. In addition, the "at least part of the first rotating member 20 is arranged in the rotating space 11" mentioned above can be understood as all the first rotating members 20 are arranged in the rotating space 11, so as to further reduce the overall thickness of the rotating shaft assembly 1. Or part of the first rotating members 20 are arranged in the rotating space 11, and the rest of the first rotating members 20 are arranged outside the rotating space 11, so as to facilitate the subsequent components to be arranged on the first rotating member 20. The present embodiment only schematically illustrates that part of the first rotating members 20 are arranged in the rotating space 11.

[0089] The first rotating part 20 can be divided into an assembly part 21 and a connecting part 22 provided on one side of the assembly part 21. The assembly part 21 is used to set the connecting part 22, and the assembly part 21 is also used to connect the flexible screen. The connecting part 22 is used to be rotatably connected to the base 10. Optionally, the assembly part 21 and the connecting part 22 can be an integral structure or a split structure. When the assembly part 21 and the connecting part 22 are an integral structure, the assembly part 21 and the connecting part 22 can be prepared through one process. For ease of understanding, the assembly part 21 and the connecting part 22 are artificially named differently. When the assembly part 21 and the connecting part 22 are a split structure, the assembly part 21 and the connecting part 22 can be formed separately and then assembled together in various ways. This embodiment does not limit the matching relationship between the assembly part 21 and the connecting part 22. In addition, this embodiment does not limit the material, shape, and structure of the assembly part 21, as long as the assembly part 21 can achieve the assembly function. In addition, the assembly portion 21 has the above-mentioned second connection end 202 for rotatably connecting the shell, and the connection portion 22 has the above-mentioned first connection end 201 for rotatably connecting the base 10. Since the first connection end 201 and the second connection end 202 are arranged opposite to each other, the position of the connection portion 22 can also be understood as being arranged on one side of the end portion of the assembly portion 21 that is arranged opposite to the second connection end 202.

[0090] Regarding the connecting portion 22, in this embodiment, a first rotating portion 220 may be provided on the outer peripheral sidewall of the connecting portion 22, and a second rotating portion 110 may be provided on the inner sidewall of the rotating space 11. By positioning at least a portion of the connecting portion 22 within the rotating space 11, the first rotating portion 220 and the second rotating portion 110 cooperate with each other to achieve the purpose of rotating the first rotating member 20 to connect to the base 10. Optionally, one of the first rotating portion 220 and the second rotating portion 110 includes a rotating block, and the other includes a rotating groove. For example, the first rotating portion 220 is a rotating block and the second rotating portion 110 is a rotating groove; or the first rotating portion 220 is a rotating groove and the second rotating portion 110 is a rotating block. This embodiment is only schematically described with the first rotating portion 220 being a rotating groove and the second rotating portion 110 being a rotating block.

[0091] Optionally, the assembly portion 21 is disposed outside the rotation space 11 and abuts the base 10 when the shaft assembly 1 is in the expanded state, thereby improving the stability of the first rotating member 20 and preventing the shaft assembly 1 from shaking. Optionally, the two assembly portions 21 are spaced apart, which not only prevents the two first rotating members 20 from colliding with each other but also provides space for the assembly of subsequent components.

[0092] Please refer to Figure 12-13 , Figure 12 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application. Figure 13 for Figure 12 In this embodiment, the shaft assembly 1 further includes two third rotating members 40. The third axis L3 of the third rotating member 40 is spaced apart from the first rotating axis L1. One end of the third rotating member 40 is rotatably connected to the base 10, and the other end is slidably connected to the housing or the second rotating member 30. The third rotating member 40 is driven to rotate by the rotation of the housing and to slide relative to the housing or the second rotating member 30.

[0093] In addition to the first rotating member 20 and the second rotating member 30, the rotating shaft assembly 1 may also include a third rotating member 40, wherein the third rotating member 40 mainly plays a role of rotation. This embodiment does not limit the material, shape, and structure of the third rotating member 40, as long as it can achieve the function of rotation. One end of the third rotating member 40 is rotatably connected to one side of the base 10, and the other end is slidably connected to the shell or the second rotating member 30. In other words, the third rotating member 40 can be slidably connected to the shell, or the third rotating member 40 can be slidably connected to the second rotating member 30. This embodiment is only schematically illustrated by the third rotating member 40 being slidably connected to the second rotating member 30.

[0094] Regardless of whether the third rotating member 40 is slidably connected to the housing or the second rotating member 30, it can rotate under the rotation of the housing. For example, when the third rotating member 40 is slidably connected to the housing, the housing can directly drive the third rotating member 40 to rotate, or when the third rotating member 40 is slidably connected to the second rotating member 30, the housing 3 can drive the second rotating member 30 to rotate, thereby driving the third rotating member 40 to rotate. The third rotating member 40 can rotate around the third axis L3 when rotating. Since the third axis L3 is spaced apart from the first rotating axis L1 of the housing 3, that is, the third axis L3 does not coincide with the first rotating axis L1, the third rotating member 40 and the housing do not rotate concentrically. Therefore, the third rotating member 40 can also slide relative to the housing or the second rotating member 30 when rotating (the sliding direction is as shown in FIG. Figure 12 and Figure 13 The third rotating member 40 prevents the shaft assembly 1 from rotating solely on the first rotating member 20. The combined rotation of the third rotating member 40 and the first rotating member 20 improves rotational stability and prevents excessive stress concentration that could damage the first rotating member 20. Furthermore, the third rotating member 40 can also be used to coordinate with other subsequent components to achieve other functions.

[0095] Alternatively, as Figure 12As shown, when the third rotating member 40 is slidably connected to the second rotating member 30, the third rotating member 40 includes a first sliding portion 41, and the second rotating member 30 includes a second sliding portion 32. The first sliding portion 41 and the second sliding portion 32 cooperate with each other to enable the third rotating member 40 to slidably connect to the second rotating member 30. Further, optionally, one of the first sliding portion 41 and the second sliding portion 32 includes a slider, and the other of the first sliding portion 41 and the second sliding portion 32 includes a chute. For example, when the first sliding portion 41 is a slider, the second sliding portion 32 is a chute. When the first sliding portion 41 is a chute, the second sliding portion 32 is a slider. This embodiment is only schematically described using the case where the first sliding portion 41 is a slider and the second sliding portion 32 is a chute.

[0096] Please refer to Figure 14 , Figure 14 Schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application. In this embodiment, the shaft assembly 1 further includes a synchronizer 50 , one end of which is rotatably connected to a third rotating member 40 , and the other end of which is rotatably connected to another third rotating member 40 .

[0097] In this embodiment, a synchronizer 50 may be added to the third rotating member 40. The synchronizer 50 is used to cooperate with the two third rotating members 40 to achieve synchronous rotation. Specifically, one end of the synchronizer 50 is rotationally connected to the third rotating member 40, and the other end is rotationally connected to the other third rotating member 40. In this way, when any one of the two shells 3 rotates, it can directly or indirectly drive one of the third rotating members 40 to rotate, thereby driving the synchronizer 50 to rotate synchronously. The rotation of the synchronizer 50 can drive the other third rotating member 40 to rotate, thereby driving the other shell 3 to rotate, so that the two shells 3 move synchronously in opposite directions. By adding the synchronizer 50, the time it takes to open and close the hinge assembly 1 and the electronic device 2 can be reduced. This embodiment does not limit the shape, material, and structure of the synchronizer 50, as long as it can achieve the function of synchronous rotation.

[0098] Alternatively, the synchronizer 50 and the third rotating member 40 may be rotationally connected via gears, belts, or the like. This embodiment is merely illustrative of the case where the synchronizer 50 and the third rotating member 40 are rotationally connected via gears. For example, the synchronizer 50 and the third rotating member 40 may be provided with a plurality of teeth spaced apart along the direction of rotation to form a gear structure.

[0099] Optionally, the number of synchronizers 50 is an even number, such as 2, 4, 6, etc. This embodiment is only schematically illustrated with two synchronizers 50. The two synchronizers 50 are rotationally connected to each other, with one synchronizer 50 rotationally connected to one third rotating member 40, and the other synchronizer 50 rotationally connected to the other third rotating member 40.

[0100] Please refer to Figure 15-17 , Figure 15 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application. Figure 16 for Figure 15 Exploded diagram. Figure 17 This is a schematic diagram of the first matching portion and the second matching portion in an embodiment of the present application. In this embodiment, the synchronizer 50 and the third rotating member 40 are arranged on the same side of the base 10, and at least one of the synchronizer 50 and the third rotating member 40 is provided with a first matching portion 51 on the side facing away from the base 10. The rotating shaft assembly 1 also includes at least one first rotating shaft 60, a sliding member 61, a blocking member 63, and a first elastic member 64. Among them, the first rotating shaft 60 passes through the first matching portion 51 and the synchronizer 50 or the third rotating member 40 provided with the first matching portion 51, and the first rotating shaft 60 is connected to the base 10. The sliding member 61 is sleeved on the first rotating shaft 60 and is provided on the side of the first matching portion 51 facing away from the base 10. The second matching portion 62 is provided on the side of the sliding member 61 close to the first matching portion 51. The blocking member 63 is fixed to the first rotating shaft 60 and is provided on the side of the sliding member 61 facing away from the base 10. The first elastic member 64 is sleeved on the first rotating shaft 60 and disposed between the blocking member 63 and the sliding member 61 .

[0101] The third rotating member 40 is used to rotate synchronously with the rotation of the housing 3 (eg Figure 15 As shown in D1 in FIG, the first matching portion 51 is driven to rotate, and the first matching portion 51 and the second matching portion 62 cooperate with each other to make the sliding member 61 slide toward or away from the third rotating member 40 (as shown in FIG. Figure 15 when the sliding member 61 slides in a direction away from the third rotating member 40, the first elastic member 64 is in a compressed state so that the second matching portion 62 abuts the first matching portion 51; so that when the third rotating member 40 stops rotating, the third rotating member 40 is in a stable state.

[0102] The rotating shaft can realize a hovering function on the basis of realizing synchronous rotation of the third rotating member 40 and the synchronizer 50. Specifically, the synchronizer 50 and the third rotating member 40 are arranged on the same side of the base 10, so as to facilitate the rotational connection between the synchronizer 50 and the third rotating member 40. In this embodiment, at least one of the synchronizer 50 and the third rotating member 40 can be provided with a first mating portion 51 on the side facing away from the base 10. In other words, the first mating portion 51 can be provided on the side of the synchronizer 50 facing away from the base 10, or the first mating portion 51 can be provided on the side of the third rotating member 40 facing away from the base 10, or the first mating portion 51 can be provided on the side of both the synchronizer 50 and the third rotating member 40 facing away from the base 10. This embodiment is only schematically described by providing the first mating portion 51 on the side of the synchronizer 50 facing away from the base 10.

[0103] The first rotating shaft 60 is usually connected to the base 10, and is used to allow other components to be mounted or fixed on the first rotating shaft 60, or the first rotating shaft 60 passes through other components to realize the assembly of multiple components, so that multiple components can cooperate with each other and provide a basis for subsequent rotation and sliding. In this embodiment, the first rotating shaft 60 can pass through the first matching portion 51, as well as those synchronizers 50 or third rotating components 40 provided with the first matching portion 51. It can also be understood that whichever component is provided with the first matching portion 51, the corresponding component is mounted on the first rotating shaft 60, and the number of components provided with the first matching portion 51 is the same as the number of the first rotating shaft 60. Figure 15 As shown, the two synchronizers 50 are provided with first matching portions 51 , so the number of the first rotating shafts 60 is correspondingly two.

[0104] The sliding member 61 is sleeved on the first rotating shaft 60, and the sliding member 61 can slide relative to the axial direction of the first rotating shaft 60 (such as Figure 15 As shown in D4). The sliding member 61 is sleeved on two rotating shafts, thereby limiting the rotation of the sliding member 61 so that the sliding member 61 can only slide relative to the first rotating shaft 60. Of course, other methods can also be used in other embodiments to achieve the sliding of the sliding member 61. The sliding member 61 is provided on the side of the first matching portion 51 away from the base 10, and the part on which the first rotating shaft 60 is sleeved is provided with a second matching portion 62 on the side close to the first matching portion 51, so that the first matching portion 51 and the second matching portion 62 are arranged face to face, which facilitates the subsequent mutual cooperation between the first matching portion 51 and the second matching portion 62. The sliding member 61 and the second matching portion 62 can be an integral structure or a split structure. When the sliding member 61 and the second matching portion 62 are an integral structure, the sliding member 61 and the second matching portion 62 can be prepared through one process. For ease of understanding, the sliding member 61 and the second matching portion 62 are artificially named differently. When the sliding member 61 and the second matching portion 62 are separate structures, the sliding member 61 and the second matching portion 62 can be formed separately and then assembled together in various ways. This embodiment does not limit the matching relationship between the sliding member 61 and the second matching portion 62.

[0105] The blocking member 63 is typically fixed to the first rotating shaft 60 to restrict the movement of other components. Optionally, to achieve the fixing of the blocking member 63 to the first rotating shaft 60, this embodiment provides a variety of specific implementations. In one implementation, the blocking member 63 is fixedly connected to the first rotating shaft 60, meaning that the blocking member 63 and the first rotating shaft 60 are manufactured and formed in a single process. However, for ease of understanding, the blocking member 63 and the first rotating shaft 60 are artificially named differently. In another implementation, the blocking member 63 and the first rotating shaft 60 are detachably connected, and the blocking member 63 is fixed to the first rotating shaft 60 through the cooperation of other components. The materials of the blocking member 63 include, but are not limited to, plastic, metal, etc., and this embodiment does not limit the blocking member 63 provided; it can be a component of any shape, as long as the blocking member 63 can limit the position of other components. This embodiment does not limit the structural form of the blocking member 63 and the first rotating shaft 60. This embodiment is only schematically illustrated by the blocking member 63 being mounted on the first rotating shaft 60.

[0106] The first elastic member 64 is sleeved on the first rotating shaft 60 and is arranged between the blocking member 63 and the sliding member 61, wherein the sliding member 61 is rotatably connected to the base 10 to limit the displacement of the sliding member 61, thereby limiting the position of one end of the first elastic member 64. At the same time, the blocking member 63 is used to limit the position of one end of the first elastic member 64. Optionally, the first elastic member 64 may contact the blocking member 63 and the sliding member 61, or may not contact the blocking member 63 and the sliding member 61. It is only necessary that when the sliding member 61 slides relative to the first rotating shaft 60, the first elastic member 64 can contact the blocking member 63 and the sliding member 61 and be in a compressed state. Further optionally, the connection method between the first elastic member 64 and the sliding member 61 and the blocking member 63 includes but is not limited to abutment, fixed connection, detachable connection, bonding, etc. The first elastic member 64 can be a coil spring, a scroll spring, a leaf spring, a disc spring, etc. Of course, in other embodiments, the first elastic member 64 may also be other elastic objects, such as elastic foam, sponge, products made of various polymer materials, etc.

[0107] It should be noted that the synchronizer 50, the sliding member 61, the blocking member 63, and the first elastic member 64 can all be sleeved onto the first rotating shaft 60 to achieve a state and provide a basis for subsequent rotation and sliding. It can also be understood that the synchronizer 50, the rotating member, the sliding member 61, the blocking member 63, and the first elastic member 64 can all have corresponding holes, and the first rotating shaft 60 can pass through the corresponding holes in sequence.

[0108] As can be seen from the above, when the third rotating member 40 rotates, the first matching portion 51 can be rotated. If the first matching portion 51 is provided on the third rotating member 40, the rotation of the third rotating member 40 directly drives the first matching portion 51 to rotate. If the first matching portion 51 is provided on the synchronizer 50, the third rotating member 40 first drives the synchronizer 50 to rotate and then drives the first matching portion 51 to rotate. The first matching portion 51 can cooperate with the second matching portion 62, thereby converting the rotation of the first matching portion 51 into the sliding of the second matching portion 62. Because the base 10 is provided on one side of the third rotating member 40 or synchronizer 50, the base 10 is usually fixed to other components, making the base 10 unable to move. Therefore, the third rotating member 40 and synchronizer 50 remain stationary, so that only the sliding member 61 slides in the direction toward or away from the third rotating member 40.

[0109] When the sliding member 61 slides in a direction away from the third rotating member 40, the stopper 63 provided on the other side limits the range of motion of the first elastic member 64, thereby allowing the first elastic member 64 to connect with the sliding member 61 and the stopper 63. The sliding member 61 compresses the first elastic member 64, placing the first elastic member 64 in a compressed state. It should be noted that when the third rotating member 40 has not yet rotated, that is, in the initial state, the first elastic member 64 can be in a compressed state, a balanced state, or a stretched state. This embodiment does not limit the initial state of the first elastic member 64; it is sufficient to ensure that the first elastic member 64 is in a compressed state when the sliding member 61 moves backward.

[0110] Optionally, the first elastic member 64 is disposed between the sliding member 61 and the blocking member 63 in a pre-compressed state. The "pre-compressed state" mentioned here refers to when the third rotating member 40 is not rotating, that is, the initial state of the first elastic member 64 is already in a compressed state. It can also be understood that when the first mating portion 51 and the second mating portion 62 are not mated, that is, when the sliding member 61 is not sliding toward or away from the third rotating member 40, the first elastic member 64 is already in a compressed state. The first elastic member 64 in a pre-compressed state can compensate for the axial movement of the first elastic member 64 relative to the first rotating shaft 60. In this way, after the rotating shaft assembly 1 has been used for a period of time, even if the size of the first elastic member 64 changes or the structure becomes loose, the first elastic member 64 in a pre-compressed state can still compensate for the axial movement of the first elastic member 64 relative to the first rotating shaft 60, thereby improving the stability of the rotating shaft assembly 1, ensuring the long-term consistency of the torque in the rotating shaft assembly 1, and improving the balance of the torque.

[0111] When the first elastic member 64 is in a compressed state, the first elastic member 64 will exert a rebound force on the sliding member 61, causing the second fitting portion 62 to tightly abut the first fitting portion 51. At the same time, the rebound force can be converted into a certain pressure exerted by the second fitting portion 62 on the first fitting portion 51. Since the friction between the second fitting portion 62 and the first fitting portion 51 is positively correlated with the pressure, that is, the greater the pressure, the greater the friction. When the friction is greater than the preset value and the third rotating member 40 stops rotating, the third rotating member 40 will not rotate relative to the rotating shaft, and the sliding member 61 and the third rotating member 40 are fixed, that is, the third rotating member 40 is in a stable state. The stable state refers to the state in which the third rotating member 40 does not rotate relative to the sliding member 61 due to its own gravity, external forces, etc., and thus does not fall. It can also be understood that, under the action of the rebound force of the first elastic member 64, the sliding member 61 applies additional pressure to the third rotating member 40, so that when the friction between the third rotating member 40 and the sliding member 61 exceeds a preset value, the sliding member 61 will not rotate relative to the third rotating member 40, thereby fixing the third rotating member 40 and enabling the third rotating member 40 to achieve functions such as hovering and self-tightening. The preset value can be the weight of the third rotating member 40, or an external force applied to the third rotating member 40, such as the rebound force generated when the flexible screen 4 is bent, the weight of the entire electronic device 2, etc.

[0112] Furthermore, to continue rotating the third rotating member 40, a force greater than the preset force must be applied to shift the third rotating member 40 from a stationary position relative to the sliding member 61 to a rotating position relative to the sliding member 61. Part of this force is used to offset the friction generated during the aforementioned process, while the remaining force is used to continue rotating the third rotating member 40. When a force greater than the preset force is applied, the third rotating member 40 continues to rotate, and the sliding member 61 shifts from sliding away from the third rotating member 40 to sliding closer to the third rotating member 40. When the sliding member 61 slides toward the direction close to the third rotating member 40 and the first elastic member 64 is in a compressed state, the first elastic member 64 is recovering its deformation at this time, and the rebound force of the first elastic member 64 is reduced. Therefore, the pressure provided by the first elastic member 64 is reduced, and the friction force of the sliding member 61 on the third rotating member 40 is reduced. At this time, only a smaller force is needed to rotate the third rotating member 40, making it easier for the third rotating member 40 to rotate. Under the action of the rebound force of the first elastic member 64, the sliding member 61 accelerates to slide toward the direction close to the third rotating member 40, preparing for the next suspension of the torque assembly.

[0113] It should be noted that the torque provided by the rotating shaft assembly 1 is related to the friction force, and during the rotation of the third rotating member 40, the friction force changes as the sliding member 61 slides relative to the first rotating shaft 60. It can also be understood that as the sliding member 61 changes the state of the first elastic member 64, the torque provided by the rotating shaft assembly 1 can increase or decrease.

[0114] In summary, compared to related art structures that use only cams to achieve a hovering function, this embodiment, through the coordination of the first engaging portion 51, the second engaging portion 62, and the first elastic member 64, can provide greater friction, improving friction performance and enabling functions such as hovering and self-tightening. In other words, when the same amount of friction is required, the first engaging portion 51, the second engaging portion 62, and the first elastic member 64 of this embodiment are smaller in size, which in turn drives a corresponding reduction in the size of other components, thereby reducing the overall size of the hinge assembly 1, improving the compactness of the hinge assembly 1, and saving space for other components.

[0115] Please refer again Figure 17 In this embodiment, the first mating portion 51 includes a plurality of first protrusions 510 spaced apart from each other, and the second mating portion 62 includes a plurality of second protrusions 620 spaced apart from each other. Both the first protrusions 510 and the second protrusions 620 have crests 511. When the sliding member 61 slides away from the third rotating member 40 and the crests 511 of the first protrusions 510 come into contact with the crests 511 of the second protrusions 620, the first elastic member 64 is compressed, causing the second mating portion 62 to abut against the first mating portion 51.

[0116] The first mating portion 51 and the second mating portion 62 may include a plurality of first protrusions 510 and a plurality of second protrusions 620, respectively. Both the first protrusions 510 and the second protrusions 620 have crests 511. In addition to the crests 511, the first protrusions 510 and the second protrusions 620 also have valleys and inclined surfaces. The crests 511 refer to the highest points of the protrusions, the valleys refer to the lowest points of the protrusions, and the inclined surfaces refer to the side surfaces between the crests 511 and the valleys.

[0117] When the sliding member 61 slides away from the third rotating member 40 and the crest 511 of the first protrusion 510 contacts the crest 511 of the second protrusion 620, the first elastic member 64 is compressed, causing the sliding member 61 to abut against the third rotating member 40. When the third rotating member 40 stops rotating, the third rotating member 40 is stabilized. The first protrusion 510 and the second protrusion 620 provided in this embodiment are not limited and can be of any shape, as long as the first protrusion 510 and the second protrusion 620 can cooperate with each other.

[0118] First, when the third rotating member 40 is not rotating relative to the sliding member 61, the first protrusion 510 and the second protrusion 620 are in a mating state where the crest 511 faces the trough. Then, when the third rotating member 40 rotates relative to the sliding member 61, the first protrusion 510 and the second protrusion 620 are in a mating state where the crest 511 slides along the inclined surface until the crests 511 face each other. At this point, the distance between the sliding member 61 and the third rotating member 40 is at its maximum. Accordingly, the first elastic member 64 is compressed to its maximum degree, providing the maximum rebound force, thereby further improving the friction performance of the rotating shaft assembly 1 and enhancing the hovering and self-tightening effects. Next, when the third rotating member 40 continues to rotate relative to the sliding member 61 under the action of an external force, the first protrusion 510 and the second protrusion 620 cooperate to form a state in which the crest 511 continues to slide along the inclined surface until the crest 511 faces the trough. During this process, the distance between the sliding member 61 and the third rotating member 40 gradually decreases. Accordingly, the compression degree of the first elastic member 64 is weakened, and the rebound force provided is reduced. Due to the reduced friction, the third rotating member 40 rotates more easily. Finally, the first protrusion 510 and the second protrusion 620 will repeat this movement, preparing for the next hovering of the shaft assembly 1.

[0119] Furthermore, since the hinge assembly 1 can hover when the crests 511 face each other, the number, position, and size of the protrusions can determine the hovering angle. For example, if the first mating portion 51 has six first protrusions 510, and the first protrusions 510 are evenly spaced, the hinge assembly 1 can hover for every 60° rotation of the third rotating member 40 relative to the sliding member 61.

[0120] Please refer to Figure 18 , Figure 18 This is a schematic diagram of the three-dimensional structure of a rotating shaft assembly in another embodiment of the present application. In this embodiment, the rotating shaft assembly 1 further includes a second rotating shaft 65 and a second elastic member 66. The second rotating shaft 65 passes through at least one of the remaining synchronizer 50 and the third rotating member 40 and is connected to the base 10. The sliding member 61 is sleeved on the second rotating shaft 65, the blocking member 63 is fixed to the second rotating shaft 65, and the second elastic member 66 is sleeved on the second rotating shaft 65 and disposed between the blocking member 63 and the sliding member 61. When the sliding member 61 slides away from the third rotating member 40, the second elastic member 66 is compressed, causing the second engaging portion 62 to abut against the first engaging portion 51.

[0121] In addition to the first rotating shaft 60 and the first elastic member 64, the rotating shaft assembly 1 may also include a second rotating shaft 65 and the first elastic member 64. The second rotating shaft 65 is usually connected to the base 10, and is used to allow other components to be mounted or fixed on the second rotating shaft 65, or the second rotating shaft 65 passes through other components to realize the assembly of multiple components and make multiple components match each other. The second rotating shaft 65 can pass through at least one of the remaining synchronizers 50 and the third rotating member 40. In other words, when only part of the two third rotating members 40 and the synchronizers 50 are provided with the first matching portion 51, the first rotating shaft 60 can pass through the component provided with the first matching portion 51, and the second rotating shaft 65 can be used to pass through the remaining components that are not provided with the first matching portion 51. As Figure 18 As shown, the two synchronizers 50 are provided with a first matching portion 51 , the first rotating shaft 60 passes through the two synchronizers 50 , and the second rotating shaft 65 passes through the two third rotating members 40 .

[0122] In addition, in this embodiment, the sliding member 61 can be sleeved on the second rotating shaft 65, and the blocking member 63 is fixed to the second rotating shaft 65, so that the second elastic member 66 can be sleeved on the second rotating shaft 65 and arranged between the blocking member 63 and the sliding member 61, thereby realizing the assembly of the second elastic member 66.

[0123] As can be seen from the above, rotation of the third rotating member 40 causes the sliding member 61 to rotate away from the third rotating member 40, thereby compressing the first elastic member 64. Since the sliding member 61 is also sleeved on the rotating shaft, when the sliding member 61 slides away from the third rotating member 40, it also abuts and compresses the second elastic member 66, causing the second elastic member 66 to be compressed as well. It is worth noting that the compression of the second elastic member 66 has the same effect as the compression of the first elastic member 64. Both utilize their rebound force to force the second mating portion 62 to tightly abut the first mating portion 51. The second mating portion 62 applies a certain positive pressure to the first mating portion 51, thereby increasing the friction between the sliding member 61 and the third rotating member 40, further enhancing the hovering effect. In other words, the size of the rotating shaft assembly 1 can be further reduced.

[0124] Optionally, the second elastic member 66 is in a pre-compression state. The pre-compression state has been described in detail above and will not be repeated herein.

[0125] Please refer to Figure 19-20 , Figure 19 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application. Figure 20This is an exploded schematic diagram of the first rotating shaft, first mating portion, and friction member in one embodiment of the present application. In this embodiment, the rotating shaft assembly 1 further includes a friction member 67, which is disposed on the side of the blocking member 63 facing away from the base 10. A flattening structure 600 is provided on at least a portion of the outer periphery of the first rotating shaft 60. The friction member 67, as well as the synchronizer 50 or the third rotating member 40 with the first mating portion 51, are all sleeved on the flattening structure 600, enabling rotation of the first mating portion 51 to drive rotation of the first rotating shaft 60 and the friction member 67.

[0126] The friction member 67 is typically used to provide friction, and the material of the friction member 67 includes, but is not limited to, materials with a high coefficient of friction, such as plastic and metal. This embodiment does not limit the friction member 67 and can be any shape, as long as it provides the friction force of the elastic member. The friction member 67 is mounted on the first rotating shaft 60, that is, the friction member 67 has a hole, and the first rotating shaft 60 extends through the through hole 810.

[0127] The "flattened structure 600" mentioned above means that if the circumferential shape of the first rotating shaft 60 is circular, it is difficult for the components mounted on the first rotating shaft 60 to be fixed to the first rotating shaft 60. Therefore, the circle can be processed into other shapes through various processes (such as milling) to achieve fixation or clamping during the rotation of the rotating part. Therefore, the flattened structure 600 can be understood as a structure with a non-circular circumferential shape. Optionally, the circumferential shape of the flattened structure 600 is square, rectangular, elliptical, etc. Optionally, the flattened structure 600 is formed by providing a limiting groove on the cylindrical first rotating shaft 60, so that at least part of the cylindrical first rotating shaft 60 becomes elliptical or rectangular. The flattened structure 600 is used to limit the circumferential movement of other components, so that the other components are relatively stationary with the first rotating shaft 60, that is, when the first rotating shaft 60 rotates, it will also drive the other components to rotate together. This embodiment does not limit the provided flattened structure 600, and it can be a component of any shape, as long as it can limit the radial movement of other components. It should be noted that, in actual production, the first rotating shaft 60 and the flattening structure 600 are integrally formed components, but for ease of understanding, the first rotating shaft 60 and the flattening structure 600 are artificially named differently.

[0128] In this embodiment, the friction member 67 and the synchronizer 50 or third rotating member 40, which has the first mating portion 51, are all sleeved onto the flattened structure 600 of the first rotating shaft 60. It can be understood that the shapes of the through-holes 810 of the friction member 67 and the third rotating member 40 or synchronizer 50 correspond to the flattened structure 600, thereby securing the friction member 67 and the third rotating member 40 or synchronizer 50 to the first rotating shaft 60. That is, when the third rotating member 40 or synchronizer 50, which has the first mating portion 51, rotates, it drives the first rotating shaft 60, thereby driving the first rotating shaft 60 and the friction member 67 to rotate. It should be noted that because the circular shape of the hole in the sliding member 61 does not match the shape of the flattened structure 600, i.e., there is a gap between the sliding member 61 and the flattened structure 600, the sliding member 61 can rotate relative to the first rotating shaft 60.

[0129] Because friction member 67 is located on the side of blocking member 63 facing away from base 10, when friction member 67 rotates synchronously with first rotating shaft 60, it rubs against blocking member 63, generating circumferential friction. When one end of first elastic member 64 applies a rebound force to sliding member 61, the other end of first elastic member 64 also applies a rebound force to blocking member 63, causing blocking member 63 to apply pressure to friction member 67. As the compression of first elastic member 64 increases, the pressure continuously increases, and thus the circumferential friction force also continuously increases, further enhancing the hovering and self-tightening effects of rotating shaft assembly 1, allowing the size of rotating shaft assembly 1 of this embodiment to be further reduced, thereby further improving the compactness of the rotating shaft assembly 1.

[0130] Please refer to Figure 21-22 , Figure 21 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application. Figure 22 for Figure 21 In this embodiment, the rotating shaft assembly 1 further includes a mounting member 68, which is fixed to the first rotating shaft 60 and disposed on the side of the blocking member 63 facing away from the base 10. The rotating shaft assembly 1 includes two friction members 67, one friction member 67 is disposed between the blocking member 63 and the mounting member 68, and the other friction member 67 is disposed on the side of the mounting member 68 facing away from the blocking member 63.

[0131] The mounting member 68 is fixed to the first rotating shaft 60 and is generally used to connect the rotating shaft assembly 1 with other components, assemble the components, etc. The materials of the mounting member 68 include, but are not limited to, plastic, metal, etc., and the present embodiment does not limit the provided mounting member 68. It can be a component of any shape, as long as it can connect the rotating shaft assembly 1 with other components. Optionally, the mounting member 68 of this embodiment has a mounting hole. Other components, such as decorative components, can be connected to the rotating shaft assembly 1 with screws using the mounting hole. In addition, after the mounting member 68 is installed on other components, the mounting member 68 can remain stationary, that is, the mounting member 68 will not slide or rotate relative to the first rotating shaft 60.

[0132] By providing a friction member 67 on each opposite side of the mounting member 68, when the first elastic member 64 is compressed, the rebound force at its other end can be applied to the two friction members 67, further increasing the friction force, thereby further reducing the size of the rotating shaft assembly 1 of this embodiment, thereby further improving the compactness of the rotating shaft assembly 1. In addition, the presence of the mounting member 68 allows the blocking member 63 to be fixed to the first rotating shaft 60 to limit the first elastic member 64.

[0133] Please refer to Figure 23-24 , Figure 23 This is a schematic diagram of the three-dimensional structure of the shaft assembly in another embodiment of the present application. Figure 24 for Figure 23 In this embodiment, the first shaft 60 is provided with a buckle groove 601 on the peripheral side of the end of the blocking member 63 facing away from the base 10 . The shaft assembly 1 further includes a buckle member 69 , part of which is disposed in the buckle groove 601 .

[0134] The latch 69 is typically used to restrict the movement of other components. It is mounted on the first rotating shaft 60 and is located on the side of the friction member 67 facing away from the blocking member 63. The latch 69 is mounted on the first rotating shaft 60, meaning that the latch 69 has a hole through which the first rotating shaft 60 extends. The materials of the latch 69 include, but are not limited to, plastic, metal, etc., and this embodiment does not limit the latch 69 provided; it can be any shape, as long as it can restrict the movement of other components. Alternatively, the latch 69 can be a shaft clip.

[0135] The latching member 69 of this embodiment is arranged in the latching groove 601 and is located on the side of the friction member 67 away from the blocking member 63. Therefore, the latching member 69 further prevents the friction member 67 on the side of the mounting member 68 away from the base 10 from falling, thereby improving the stability of the shaft assembly 1.

[0136] Please refer again Figure 4-Figure 5 This embodiment provides an electronic device 2, including a flexible screen 4, two shells 3, and a hinge assembly 1 as provided in the above embodiment of the present application, at least parts of the two shells 3 are respectively arranged on opposite sides of the hinge assembly 1, and the shells 3 are rotatably connected to the first rotating member 20 in the hinge assembly 1, and the flexible screen 4 is arranged on one side of the two first rotating members 20 and the two shells 3.

[0137] The electronic device 2 provided in this embodiment includes, but is not limited to, mobile terminals such as flexible screen 4 mobile phones, tablet computers, laptop computers, PDAs, personal computers (PCs), personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, and fixed terminals such as digital TVs and desktop computers. This embodiment does not limit the type of electronic device 2. By adopting the hinge assembly 1 provided in the above embodiment of the present application, the structure of the hinge assembly 1 and the electronic device 2 can be simplified, the cost of the electronic device 2 and the number of components can be reduced, and the electronic device 2 can be in the form of a water drop screen when in a closed state.

[0138] Optionally, there are two rotating shaft assemblies 1 and they are axially symmetrically arranged on opposite sides. By fixing the two rotating shaft assemblies 1 to the housing 3, the angles of the two rotating shafts are kept consistent during rotation, thereby achieving linkage.

[0139] Please refer again Figure 1 , Figures 25-28 , Figure 25 This is a schematic diagram of the three-dimensional structure of an electronic device after removing the flexible screen in one embodiment of the present application. Figure 26 for Figure 25 Exploded diagram. Figure 27 In another embodiment of the present application Figure 4 Schematic diagram of a partial cross section along the AA direction. Figure 28 In another embodiment of the present application Figure 8 Schematic diagram of a partial cross-section along direction BB. In this embodiment, the electronic device 2 further includes a first support member 80 disposed between the two first rotating members 20, configured to abut the flexible screen 4. The electronic device 2 has an expanded state in which the extension direction of the first rotating members 20 is parallel to the arrangement direction of the two first rotating members 20. When the electronic device 2 is in the expanded state, a protrusion 23 is provided on the side of one first rotating member 20 that is closer to the other first rotating member 20, and the first support member 80 abuts the protrusion 23. Rotation of the protrusion 23 can move the first support member 80 toward the base 10, and after the first support member 80 abuts the base 10, the first support member 80 separates from the protrusion 23.

[0140] The first support 80 is used to abut against the flexible screen 4, to improve the mechanical strength of the flexible screen 4 and to further control the shape of the water drop screen during the movement of the electronic device 2. The material, shape and structure of the first support 80 are not limited in the embodiment, as long as the first support 80 can abut against the flexible screen 4. The first support 80 can be arranged between the two connecting portions 22 to reduce the thickness of the whole device. In addition, the structure of the first support 80 can be simplified correspondingly due to the simple structure of the hinge assembly 1.

[0141] When the electronic device 2 is in the unfolded state, one first rotating member 20 is provided with a protruding portion 23 towards the side close to the other first rotating member 20. The protruding portion 23 can also be regarded as the connecting portion 22 described above for connecting with the base 10, i.e. the part of the connecting portion 22 protruding from the assembling portion 21 towards the other first rotating member 20. Alternatively, the protruding portion 23 is in an integral structure with the first rotating member 20, and the protruding portion 23 and the first rotating member 20 can be prepared by one process. In order to facilitate understanding, the protruding portion 23 and the first rotating member 20 are artificially named differently.

[0142] Both protruding portions 23 protrude towards the middle, so that the protruding portions can abut against the first support 80 to maintain the stability of the first support 80, and the flexible screen 4 can also be placed stably on the first support 80. Then, during the process of the electronic device 2 from the unfolded state to the closed state, the shell 3 rotates to drive the first rotating member 20 to rotate relative to the base 10, so that the protruding portion 23 also rotates. For the protruding portion 23 in the middle position, the shell 3 rotates towards the protruding portion 23, and the protruding portion 23 rotates away from the flexible screen 4, i.e. rotates downwards. Therefore, when the protruding portion 23 rotates downwards, the first support 80 moves towards the base 10 due to its own gravity or the cooperation of other components. When the protruding portion 23 rotates by a certain angle, the first support 80 can abut against the base 10, and the position of the first support 80 is fixed at this time. When the protruding portion 23 continues to rotate, the protruding portion 23 separates from the first support 80, and the rotation of the protruding portion 23 no longer affects the position relationship of the first support 80.

[0143] From the perspective of the flexible screen 4, when the electronic device 2 moves from the unfolded state to the closed state, the housing 3 and the first rotating member 20 both rotate. Consequently, the housing 3 and the first rotating member 20 squeeze the flexible screen 4, causing the lower end of the flexible screen 4 to protrude downward, toward the base 10, due to its own gravity and squeezing. Therefore, when the first support member 80 abuts the base 10, the flexible screen 4 abuts the first support member 80, which can control the position of the lower end of the flexible screen 4. Therefore, by controlling the position of the first support member 80 abutting the base 10, the position of the lower end of the flexible screen 4 can be controlled, thereby further controlling the shape of the waterdrop screen.

[0144] Furthermore, after the water drop screen is formed, there are two external folding areas: one is the outer folding area between the housing 3 and the first rotating member 20, and the other is the inner folding area between the first rotating member 20 and the first support member 80. The flexible screen 4 in the outer folding area is subjected to tensile stress, while the flexible screen 4 in the inner folding area is subjected to compressive stress. Therefore, the present application can adjust the shape and force of the water drop screen by adjusting the position of the housing 3, the first rotating member 20, and the first support member 80 when the electronic device 2 is in the closed state.

[0145] Optionally, a retaining groove is provided on the side of the base 10 proximate to the first support member 80. When the first support member 80 moves toward the base 10, at least a portion of the first support member 80 can be positioned within the retaining groove and abut the groove wall. In this embodiment, the retaining groove provided on the base 10 allows the position of the first support member 80 abutting the base 10 to be adjusted, thereby adjusting the shape and force applied to the water drop screen.

[0146] Please refer to Figure 29 , Figure 29 In one embodiment of this application Figure 4 Schematic diagram of a partial cross-section along the CC direction. In this embodiment, the electronic device 2 further includes a bracket 71 disposed on the side of the first support member 80 facing away from the flexible screen 4 and connected to the first support member 80, and a third elastic member 72 disposed between the bracket 71 and the base 10. When the protrusion 23 rotates, the third elastic member 72 is deformed, causing the third elastic member 72 to drive the first support member 80 toward the base 10 through the rebound force.

[0147] In addition to the first support member 80, a bracket 71 and a third elastic member 72 may be additionally provided. The support bracket is used to install the third elastic member 72. The bracket 71 may be provided on the side of the first support member 80 facing away from the flexible screen 4, that is, the bracket 71 may be provided below the first support member 80. As for the positional relationship between the bracket 71 and the base 10, this application will describe in detail later. The bracket 71 may also be connected to the first support member 80, and the third elastic member 72 may be provided between the bracket 71 and the base 10. The third elastic member 72 may be a coil spring, a volute spring, a leaf spring, a disc spring, etc. Of course, in other embodiments, the third elastic member 72 may also be other elastic objects, such as elastic foam, sponge, products made of various polymer materials, etc. Optionally, the bracket 71 and the first support member 80 may be fixedly connected or detachably connected. When the bracket 71 and the first support member 80 are detachably connected, they may be connected by means of screw connection or snap connection.

[0148] As can be seen from the above, when the first rotating member 20 rotates, the protrusion 23 will rotate in the direction away from the flexible screen 4, that is, rotate downward. Because the third elastic member 72 is in a deformed state when the protrusion rotates. The deformation state mentioned here refers to the third elastic member 72 being in a compressed state or a stretched state. The deformed third elastic member 72 will give a rebound force to the bracket 71 and transmit it to the first support member 80, so that the first support member 80 moves toward the direction close to the base 10 under the drive of the rebound force, so that the first support member 80 moves downward close to the protrusion 23 until the first support member 80 abuts the base 10. Therefore, through the bracket 71, the third elastic member 72 can enable the first support member 80 to abut on the base 10 under the action of the rebound force, thereby improving the stability of the movement process of the first support member 80.

[0149] Optionally, the third elastic member 72 is disposed between the bracket 71 and the first support member 80. When the protrusion 23 rotates, the third elastic member 72 is in a compressed state. In this case, when the protrusion 23 rotates, the third elastic member 72 pushes the bracket 71 downward, causing the bracket 71 to move downward, thereby driving the first support member 80 to move downward. Alternatively, the third elastic member 72 is disposed on the side of the bracket 71 facing away from the first support member 80. When the protrusion 23 rotates, the third elastic member 72 is in a stretched state. In this case, when the protrusion 23 rotates, the third elastic member 72 pulls the bracket 71 downward, causing the bracket 71 to move downward, thereby driving the first support member 80 to move downward. This embodiment is only schematically illustrated with the third elastic member 72 disposed between the bracket 71 and the first support member 80.

[0150] Please refer again Figure 29In this embodiment, the base 10 is provided with a receiving space 12 on a side away from the rotating space 11, at least part of the bracket 71 and the third elastic member 72 are provided in the receiving space 12, and the third elastic member 72 is installed on the inner wall of the receiving space 12.

[0151] In this embodiment, a receiving space 12 can be provided on the other side of the base 10 from the rotation space 11, that is, on the lower side of the base 10. In other words, the receiving space 12 is provided on the side of the base 10 facing away from the flexible screen 4. At least a portion of the bracket 71 and the third elastic member 72 are disposed within the receiving space 12, and the third elastic member 72 is mounted on the inner wall of the receiving space 12. This reduces the overall thickness of the electronic device 2 and makes the structure of the electronic device 2 more compact. This embodiment is only schematically illustrated with the entire bracket 71 and the third elastic member 72 disposed within the receiving space 12.

[0152] In this embodiment, the third elastic member 72 is disposed between the bracket 71 and the base 10 in a pre-deformed state, and when the first support member 80 abuts against the base 10 , the third elastic member 72 is still in a deformed state.

[0153] The pre-deformed state refers to the initial state of the third elastic member 72 when the protrusion 23 has not yet rotated, and the state of the third elastic member 72 when the first support layer abuts the base 10. When the third elastic member 72 has not yet rotated, it is already in a deformed state, allowing the first support member 80 to closely abut the protrusion 23, thereby improving the stability of the first support member 80. As the first support member 80 moves toward the base 10, the deformation of the third elastic member 72 is gradually released. In this embodiment, even when the first support member 80 abuts the base 10, the third elastic member 72 remains in a deformed state, thereby allowing the first support member 80 to closely abut the base 10, further improving the stability of the first support member 80.

[0154] Please refer to Figure 26 and Figure 30 , Figure 30 This is an exploded schematic diagram of the second support member and the rotating shaft assembly in one embodiment of the present application. In this embodiment, the electronic device 2 further includes a second support member 80 fixed to the first rotating member 20. The second support member 80 includes a slidably connected support portion 81 and a sliding portion 82. The support portion 81 is connected to the first rotating member 20, and the sliding portion 82 is used to connect to the flexible screen 4. The electronic device 2 has an extended state in which the extension direction of the first rotating member 20 is parallel to the arrangement direction of the two first rotating members 20. When the electronic device 2 is in the extended state, the sliding direction of the sliding portion 82 is parallel to the arrangement direction of the two first rotating members 20.

[0155] The electronic device 2 can additionally be provided with a second support 80 connected to the first rotating member 20, so that the angle of rotation of the first rotating member 20 is the angle of rotation of the second support 80. The fixed manner includes, but is not limited to, fixed connection or detachable connection and other connection manners. When the second support 80 is fixedly connected to the first rotating member 20, the second support 80 and the first rotating member 20 are of an integrated structure, i.e., the second support 80 and the first rotating member 20 are manufactured by the same process, but for the sake of understanding, the second support 80 and the first rotating member 20 are artificially named differently. When the second support 80 is detachably connected to the first rotating member 20, the connection can be achieved by screws or buckles.

[0156] The second support 80 and the first support 80 have the same function of supporting the flexible screen 4. However, the second support 80 is different from the first support 80 in that the flexible screen 4 abuts against the first support 80, and the flexible screen 4 is connected to the second support 80. The second support 80 includes a support portion 81 and a sliding portion 82 connected in sliding manner. The support portion 81 is connected to the first rotating member 20, and the sliding portion 82 is used to connect the flexible screen 4. That is, the sliding portion 82 can slide on the support portion 81, or in other words, the flexible screen 4 can slide on the support portion 81, and the sliding direction is parallel to the arrangement direction of the two first rotating members 20 when the electronic device 2 is in the unfolded state. Alternatively, the flexible screen 4 can be attached to the sliding portion 82 and the housing 3 by adhesive.

[0157] When the flexible screen 4 rotates, the flexible screen 4 will generate internal stress due to the different layer structures and the different materials and structures of different layers. Therefore, when the flexible screen 4 generates internal stress, the internal stress will drive the sliding portion 82 connected to the flexible screen 4 to slide, thereby relieving the stress generated by the deformation of the flexible screen 4 and weakening the creases caused by the stress, buffering the flexible screen 4, preventing the flexible screen 4 from being damaged, and improving the service life of the flexible screen 4. In addition, the shape, structure and material of the support portion 81 and the sliding portion 82 are not limited in this embodiment, as long as the support and sliding functions can be achieved.

[0158] Alternatively, the support portion 81 is provided with a sliding groove, and the sliding portion 82 is arranged in the sliding groove, and the surface of the sliding portion 82 close to the flexible screen 4 is flush with the surface of the support portion 81 close to the flexible screen 4, thereby improving the flatness of the second support 80.

[0159] Alternatively, the pivot assembly 1 and the second support 80 are symmetrically distributed, so that the symmetrically distributed components can be shared, the design difficulty is reduced, the production cost is reduced, the modular production can be realized, the production efficiency is high, and the part reliability control is facilitated.

[0160] Optionally, due to the simple structure of the rotatable shaft assembly 1 in this embodiment, the structure of the second support member 80 can be simplified accordingly. Compared to the second support member 80 in the related art, which is complex in structure and manufactured using complex processes such as powder metallurgy, the second support member 80 in this embodiment can be manufactured using only a stamping process, reducing costs.

[0161] Please refer to Figure 31 , Figure 31 for Figure 30 Schematic diagram of a partial cross-section along the DD direction in FIG. In this embodiment, the support portion 81 has a through hole 810, and the sliding portion 82 includes a first portion 821, a second portion 822, and a third portion 823. The first portion 821 and the second portion 822 are arranged on opposite sides of the support portion 81. The first portion 821 is used to connect to the flexible screen 4. The size of the second portion 822 is larger than the size of the through hole 810. The third portion 823 passes through the through hole 810 to connect the first portion 821 and the second portion 822. By making the size of the second portion 822 larger than the size of the through hole 810, the sliding portion 82 is prevented from separating from the support portion 81, thereby improving the connection performance of the sliding portion 82 and the support portion 81.

[0162] Please refer to the figure Figure 26 and Figure 32 , Figure 32 In another embodiment of the present application Figure 4 Partial cross-sectional view along the AA direction. In this embodiment, the electronic device 2 further includes a decorative member 90, which defines a mounting space 91, with at least a portion of the hinge assembly 1 disposed within the mounting space 91. The electronic device 2 has an expanded state in which the extension direction of the first rotating member 20 is parallel to the arrangement direction of the two first rotating members 20. When the electronic device 2 is in the expanded state, the two housings 3 enclose a housing space 92, with the decorative member 90 disposed within the housing space 92.

[0163] The decorative part 90 is mainly used to assemble the rotating shaft assembly 1 on the decorative part 90. For example, the base 10, the mounting part 68 and other components can be fixed on the decorative part 90 to provide an assembly basis. At the same time, the decorative part 90 can also allow at least part of the rotating shaft assembly 1 to be located in the installation space 91, thereby protecting and shielding the rotating shaft assembly 1, thereby improving the safety performance and appearance performance of the electronic device 2. This embodiment does not limit the shape, structure, material, etc. of the decorative part 90, as long as it can play the role of assembly. Moreover, when the electronic device 2 is in the expanded state, the two shells 3 can be surrounded to form a accommodating space 92, and the mounting part is located in the accommodating space 92, so that the existence of the decorative part 90 cannot be observed from the appearance when the electronic device 2 is in the expanded state, further improving the appearance performance of the electronic device 2. The decorative part 90 is only exposed when the two shells 3 are separated when the shells 3 rotate.

[0164] The above is a detailed introduction to the contents provided in the implementation mode of the present application. This article explains and illustrates the principles and implementation modes of the present application. The above explanation is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation mode and application scope. In summary, the contents of this specification should not be understood as limiting the present application.

Claims

1. A rotating shaft assembly, characterized in that: Applied to an electronic device, the electronic device includes a flexible screen, two housings, and two second supporting members, the rotating shaft assembly includes a base and two first rotating members with opposite rotation directions, each second supporting member is fixed to one of the first rotating members, the first rotating member includes a first connecting end and a second connecting end arranged oppositely, the first connecting end is rotatably connected to the base, and the second connecting end is used to rotatably connect to the housing, the second supporting member and the housing jointly support the flexible screen, the housing rotates about the first rotation axis, and the first rotating member rotates about the second rotation axis; In an arrangement direction parallel to the two second rotation axes, the two first rotation axes are located between the two second rotation axes; the shaft assembly has a closed state in which the distance between the two first connection ends is greater than the distance between the two second connection ends.

2. The shaft assembly according to claim 1, wherein: When the rotating shaft assembly is in the closed state, in an arrangement direction perpendicular to the two second rotating axes, the second rotating axis is closer to the second connecting end than the first rotating axis.

3. The shaft assembly according to claim 1, wherein: The rotating shaft assembly further includes two second rotating members, one end of the second rotating member is rotatably connected to the second connecting end, and the other end is used to connect to the shell.

4. The shaft assembly according to claim 3, wherein: The first rotating member has an assembly surface for assembling the flexible screen, and at least part of the second rotating member is arranged on a side close to a surface opposite to the assembly surface.

5. The shaft assembly according to claim 1, wherein: A rotation space is provided on one side of the base, and the first rotating part includes an assembly part and a connecting part provided on one side of the assembly part, the connecting part has the first connecting end, and the assembly part has the second connecting end; the outer peripheral side wall of the connecting part is provided with a first rotating part, and the inner side wall of the rotation space is provided with a second rotating part, the first rotating part and the second rotating part cooperate to enable the first rotating part to rotatably connect to the base.

6. The shaft assembly according to claim 3, wherein: The rotating shaft assembly also includes two third rotating members, the third axis of the third rotating member is spaced apart from the first rotating axis, one end of the third rotating member is rotatably connected to the base, and the other end is used for sliding connection to the shell or the second rotating member, so as to drive the third rotating member to rotate under the rotation of the shell and also slide relative to the shell or the second rotating member.

7. The shaft assembly according to claim 6, wherein: The rotating shaft assembly further includes a synchronous member, one end of which is rotatably connected to one of the third rotating members, and the other end of which is rotatably connected to another of the third rotating members.

8. The shaft assembly according to claim 7, wherein: The synchronizer and the third rotating member are arranged on the same side of the base, and at least one of the synchronizer and the third rotating member is provided with a first matching portion on a side away from the base. The rotating shaft assembly further includes: at least one first rotating shaft, passing through the first matching portion and the synchronizer or the third rotating member provided with the first matching portion, and the first rotating shaft is connected to the base; a sliding member, sleeved on the first rotating shaft and disposed on a side of the first matching portion facing away from the base, wherein a second matching portion is disposed on a side of the sliding member close to the first matching portion; a blocking member fixed to the first rotating shaft and disposed on a side of the sliding member facing away from the base; and a first elastic member, sleeved on the first rotating shaft and disposed between the blocking member and the sliding member; The third rotating member is used to rotate synchronously with the rotation of the shell, thereby driving the first matching portion to rotate, and the first matching portion and the second matching portion cooperate with each other to make the sliding member slide toward or away from the third rotating member; when the sliding member slides toward and away from the third rotating member, the first elastic member is in a compressed state so that the second matching portion abuts against the first matching portion; so that when the third rotating member stops rotating, the third rotating member is in a stable state.

9. The shaft assembly according to claim 8, wherein: The first matching portion includes a plurality of first protrusions arranged at intervals, and the second matching portion includes a plurality of second protrusions arranged at intervals, and both the first protrusions and the second protrusions have crests; When the sliding member slides in a direction away from the third rotating member and the crest of the first protrusion contacts the crest of the second protrusion, the first elastic member is in a compressed state and causes the second matching portion to abut against the first matching portion.

10. The shaft assembly according to claim 8, wherein: The first elastic member is arranged between the sliding member and the blocking member in a pre-compressed state.

11. The shaft assembly according to claim 8, wherein: The rotating shaft assembly further includes a second rotating shaft and a second elastic member, the second rotating shaft passing through at least one of the remaining synchronizer members and the third rotating member and connected to the base, the sliding member being sleeved on the second rotating shaft, the blocking member being fixed to the second rotating shaft, and the second elastic member being sleeved on the second rotating shaft and disposed between the blocking member and the sliding member; When the sliding member slides in a direction away from the third rotating member, the second elastic member is in a compressed state so that the second matching portion abuts against the first matching portion.

12. The shaft assembly according to claim 8, wherein: The rotating shaft assembly further includes a friction member, which is arranged on a side of the blocking member facing away from the base; At least part of the outer circumference of the first rotating shaft is provided with a flattened structure, and the friction member, and the synchronous member or the third rotating member provided with the first matching portion are all sleeved on the flattened structure, so that the rotation of the first matching portion can drive the first rotating shaft and the friction member to rotate.

13. The shaft assembly according to claim 12, wherein: The rotating shaft assembly also includes a mounting member, which is fixed to the first rotating shaft and is arranged on the side of the blocking member facing away from the base; the rotating shaft assembly includes two friction members, one friction member is arranged between the blocking member and the mounting member, and the other friction member is arranged on the side of the mounting member facing away from the blocking member.

14. The shaft assembly according to claim 8, wherein: The first rotating shaft is provided with a snap groove on the peripheral side of the end of the blocking member away from the base, and the rotating shaft assembly further includes a snap member, and part of the snap member is provided in the snap groove.

15. An electronic device, characterized in that: It includes a flexible screen, two shells, and a hinge assembly as described in any one of claims 1 to 14, wherein at least parts of the two shells are respectively arranged on opposite sides of the hinge assembly, and the shells are rotatably connected to the first rotating part in the hinge assembly, and the flexible screen is arranged on one side of the two first rotating parts and the two shells.

16. The electronic device according to claim 15, wherein: The electronic device further includes a first supporting member disposed between the two first rotating members, configured to abut against the flexible screen. The electronic device has an unfolded state in which an extension direction of the first rotating member is parallel to an arrangement direction of the two first rotating members. When the electronic device is in the unfolded state, a protrusion is provided on a side of one of the first rotating members that is closer to the other first rotating member, and the first supporting member abuts against the protrusion. The rotation of the protrusion can cause the first support member to move toward the direction close to the base, and after the first support member abuts against the base, the first support member is separated from the protrusion.

17. The electronic device according to claim 16, wherein: The electronic device further includes a bracket provided on a side of the first support member facing away from the flexible screen and connected to the first support member, and a third elastic member provided between the bracket and the base; When the protrusion rotates, the third elastic member is in a deformed state, so that the third elastic member drives the first supporting member to move toward the direction close to the base through the rebound force.

18. The electronic device according to claim 17, wherein: The base is provided with a receiving space on a side away from the rotating space. At least part of the bracket and the third elastic member are provided in the receiving space, and the third elastic member is installed on the inner wall of the receiving space.

19. The electronic device according to claim 17, wherein: The third elastic member is disposed between the bracket and the base in a pre-deformed state, and when the first supporting member abuts against the base, the third elastic member still has the deformed state.

20. The electronic device according to claim 15, wherein The electronic device also includes a second supporting member, which includes a supporting part and a sliding part that are slidably connected. The supporting part is connected to the first rotating member, and the sliding part is used to connect to the flexible screen. The electronic device has an expanded state in which the extension direction of the first rotating member is parallel to the arrangement direction of the two first rotating members. When the electronic device is in the expanded state, the sliding direction of the sliding part is parallel to the arrangement direction of the two first rotating members.

21. The electronic device according to claim 20, wherein: The supporting part has a through hole, and the sliding part includes a first part, a second part, and a third part. The first part and the second part are arranged on opposite sides of the supporting part. The first part is used to connect the flexible screen. The size of the second part is larger than the size of the through hole. The third part passes through the through hole to connect the first part and the second part.

22. The electronic device according to claim 15, wherein The electronic device also includes a decorative piece, which has an installation space, and at least part of the rotating shaft assembly is arranged in the installation space; the electronic device has an expanded state in which the extension direction of the first rotating piece is parallel to the arrangement direction of the two first rotating pieces. When the electronic device is in the expanded state, the two shells are surrounded to form an accommodating space, and the decorative piece is arranged in the accommodating space.

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