Rotating shaft assembly and electronic equipment

Abstract

The invention provides a rotating shaft assembly and electronic equipment. The rotating shaft assembly comprises a base and two first rotating pieces with opposite rotating directions. The first rotating part comprises a first connecting end and a second connecting end which are oppositely arranged, the first connecting end is rotationally connected with the base, the second connecting end is used for being rotationally connected with the shell, and the first rotating part is used for bearing the flexible screen together with the shell capable of rotating around the first rotating axis. In the arrangement direction parallel to the second rotating axes of the two first rotating pieces, the two first rotating axes are located between the two second rotating axes. The rotating shaft assembly has a closed state that the distance between the two first connecting ends is larger than the distance between the two second connecting ends. When the rotating shaft assembly is applied to the electronic equipment, only the position relation between the axis of the first rotating part and the axis of the shell needs to be designed, so that the two half flexible screens can be in a fit state in the closed state, the structure of the rotating shaft assembly can be simplified, and the number of creases generated by bending of the flexible screens can be reduced or even eliminated.

Description

Technical Field

[0001] This application belongs to the field of hinge assembly technology, specifically relating to hinge assemblies and electronic devices. Background Technology

[0002] The hinge assembly, as a crucial component in flexible electronic devices, works in conjunction with the housing to constrain the shape of the flexible screen after bending and closing. Some electronic devices are increasingly favored by users because they eliminate the gap between the two halves of the flexible screen when closed, improving aesthetics and effectively protecting the flexible screen. However, the hinge assemblies currently used in these devices have relatively complex structures. Summary of the Invention

[0003] In view of this, the first aspect of this application provides a pivot assembly for use in an electronic device, the electronic device including a flexible screen and two housings, the pivot assembly including a base and two first rotating members with opposite rotation directions, the first rotating members including a first connecting end and a second connecting end disposed opposite to each other, the first connecting end being rotatably connected to the base, the second connecting end being rotatably connected to the housings, the first rotating members being used together with the housings which are rotatable about a first rotation axis to support the flexible screen;

[0004] In the arrangement direction parallel to the second rotation axes of the two first rotating members, the two first rotation axes are located between the two second rotation 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.

[0005] The rotating shaft assembly provided in the first aspect of this application firstly provides a motion basis for the closed state of the rotating shaft assembly by rotating the first connecting ends of the two first rotating members to the base in opposite directions. Simultaneously, the second connecting ends of the first rotating members are rotated to the housing. The first rotating members can rotate about a second rotation axis, and the housing can rotate about a first rotation axis. The flexible screen is supported on the two housings and the two first rotating members. Therefore, when the housing rotates, it can drive the first rotating members to rotate, thereby jointly driving the flexible screen to move.

[0006] Furthermore, this application defines the positional relationship between the first and second rotation axes, ensuring that in an arrangement direction parallel to the two second rotation axes, the two first rotation axes are located between the two second rotation axes. In other words, the second rotation axes do not coincide with the first rotation axes; that is, the rotation centers of the housing and the first rotating component do not coincide, with the rotation center of the housing being more inward and the rotation center of the first rotating component being more outward. Alternatively, it can be understood that the first rotation axis is positioned more inward relative to the second rotation axis, and the second rotation axis is positioned more outward relative to the first rotation axis.

[0007] When the hinge assembly of this application is applied to an electronic device and the electronic device moves, for example, during the process of the electronic device flattening a flexible screen to partially bonding a flexible screen, the housing rotates around a first rotation axis, and the first rotating component rotates around a second rotation axis. When the housing rotates a certain angle, the connection between the first rotating component and the housing will also rotate by the same angle. Since the second rotation axis does not coincide with the first rotation axis, if the first rotating component also rotates by the same angle, the second connecting end of the first rotating component cannot contact the connection between the first rotating component and the housing, and the movement cannot continue. Furthermore, since the first rotation axis is located inward and the second rotation axis is located outward, the first rotating component must rotate by an angle greater than the rotation angle of the housing, that is, the first rotating component must rotate a certain angle more than the housing to ensure that the first rotating component is always connected to the housing.

[0008] Therefore, when the electronic device is in a closed state, i.e., when the flexible screen on the side away from the base is in contact, it can be understood that the housing drives the flexible screen to rotate 90°, making the horizontally set flexible screen vertically set, and the left and right halves of the flexible screen in contact. At this time, the two housings are also parallel, i.e., the angle between the two housings is 0°. Therefore, the rotation angle of the two first rotating parts needs to be larger, for example, greater than 90°, so that the angle between the two first rotating parts is greater than 0°, so that the first rotating parts can always rotate and connect to the housing. This makes the distance between the two first connecting ends on the side closer to the base greater than the distance between the two second connecting ends on the side farther from the base, thereby achieving the closed state of the rotating shaft assembly with the two first rotating parts clamping to form a "smaller at the top and larger at the bottom" spatial shape. Therefore, within this space, the flexible screen on the side closer to the base, i.e., the lower end of the flexible screen, can have more space to bend. In other words, the radius of curvature of the flexible screen bending at the lower end is larger, preventing excessive stress concentration at the bending point of the flexible screen, thereby reducing or even eliminating the number of creases caused by bending, and improving the performance and lifespan of the flexible screen.

[0009] In summary, this application only requires a hinge assembly consisting of a base and two first rotating parts. When the hinge assembly is applied to electronic devices, the positional relationship between the axis of the first rotating part and the axis of the housing is designed so that the two halves of the flexible screen can be fitted together in the closed state. Furthermore, the radius of curvature of the lower end of the flexible screen can be increased. This not only simplifies the structure of the hinge assembly, reduces its cost and the number of parts, but also reduces or even eliminates the number of creases, improving the performance and lifespan of the flexible screen.

[0010] A second aspect of this application provides an electronic device, including a flexible screen, two housings, and a pivot assembly as provided in the first aspect of this application, wherein at least portions of the two housings are respectively disposed on opposite sides of the pivot assembly, and the housings are rotatably connected to the first rotating members in the pivot assembly, and the flexible screen is disposed on one side of the two first rotating members and the two housings.

[0011] The electronic device provided in the second aspect of this application, by adopting the hinge assembly provided in the first aspect of this application, can simplify the structure of the hinge assembly and the electronic device, reduce the cost of the electronic device and the number of components, and make the electronic device present a form in which two flexible screen halves are attached when it is in a closed state. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0013] Figure 1 This is a three-dimensional structural diagram of the rotating shaft assembly in the unfolded state according to one embodiment of this application.

[0014] Figure 2 for Figure 1 Exploded view.

[0015] Figure 3 for Figure 1 Side view.

[0016] Figure 4 This is a top view of a hinge assembly applied to an electronic device and in an unfolded state according to one embodiment of this application.

[0017] Figure 5 As described in one embodiment of this application Figure 4 A schematic diagram of a partial cross-section along the AA direction.

[0018] Figure 6 This is a three-dimensional structural diagram of the rotating shaft assembly in a closed state according to one embodiment of this application.

[0019] Figure 7 for Figure 6 Side view.

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

[0021] Figure 9 As described in one embodiment of this application Figure 8 A partial cross-sectional diagram along the BB direction.

[0022] Figure 10This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application.

[0023] Figure 11 for Figure 10 Side view.

[0024] Figure 12 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application.

[0025] Figure 13 for Figure 12 Side view.

[0026] Figure 14 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application.

[0027] Figure 15 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application.

[0028] Figure 16 for Figure 15 Exploded view.

[0029] Figure 17 This is a schematic diagram of the first mating part and the second mating part according to one embodiment of this application.

[0030] Figure 18 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application.

[0031] Figure 19 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application.

[0032] Figure 20 This is an exploded view of the first rotating shaft, the first mating part, and the friction element in one embodiment of this application.

[0033] Figure 21 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application.

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

[0035] Figure 23 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application.

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

[0037] Figure 25 This is a three-dimensional structural diagram of an electronic device after the flexible screen has been removed, according to one embodiment of this application.

[0038] Figure 26for Figure 25 Exploded view.

[0039] Figure 27 In another embodiment of this application Figure 4 A schematic diagram of a partial cross-section along the AA direction.

[0040] Figure 28 In another embodiment of this application Figure 8 A partial cross-sectional diagram along the BB direction.

[0041] Figure 29 As described in one embodiment of this application Figure 4 A partial cross-sectional diagram along the CC direction.

[0042] Figure 30 This is an exploded view of the second support member and the rotating shaft assembly in one embodiment of this application.

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

[0044] Figure 32 In yet another embodiment of this application Figure 4 A schematic diagram of a partial cross-section along the AA direction.

[0045] Label Explanation:

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

[0047] The following are preferred embodiments of this application. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

[0048] Before introducing the technical solution of this application, let's go over the technical issues in related technologies in detail.

[0049] Because of their rotational function, hinge assemblies can be applied in a wide variety of fields, such as door locks, vehicles, machinery manufacturing, and electronic equipment. A hinge assembly can connect to a component via its two primary rotating parts, thereby enabling the rotation of both components. An example of a hinge assembly's application in flexible electronic equipment will be given below.

[0050] One of the key components in flexible electronic devices, the flexible screen is an important application technology of Organic Light-Emitting Diode (OLED) and has seen significant development in recent years. Compared with traditional displays, flexible screens have significant advantages, such as being thinner and lighter, consuming less power, and thanks to their bendability and flexibility, their applications are becoming increasingly widespread; for example, some 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 in product applications, it relies on a structure with a certain degree of rigidity for convenient use by users. Therefore, structurally, the bending of the flexible screen requires a rigid shell, with the two halves of the shell connected by a hinge assembly. The flexible screen deforms along with the movement of the shell and the hinge assembly, realizing the change between an unfolded and closed state. Therefore, the deformation process of the flexible screen is the movement process of the hinge assembly.

[0051] Currently, flexible screen deformation mainly falls into two categories: inward folding and outward folding. Inward folding refers to a design where the two halves of the flexible screen are close together and the hinge assembly is closed, with the flexible screen partially obscured by the housing. Its advantage lies in the housing's effective protection, reducing the impact and wear of external forces. Outward folding refers to a design where the two housings are close together and the hinge assembly is closed, exposing the flexible screen. Its advantage is that the bending angle doesn't need to be too small, and the flexible screen doesn't need to be fully unfolded when using half-screen displays. For inward folding, when the flexible screen is folded inward, i.e., when the hinge assembly and electronic device are closed, the flexible screen typically has two shapes: U-shaped and teardrop-shaped. A U-shaped screen resembles the letter "U" when viewed from the side, with a certain gap between the two halves. A teardrop screen resembles a teardrop when viewed from the side. Because its waterdrop screen can tightly fit the two halves of the flexible screen away from the hinge assembly after merging, it eliminates the gap between the two halves of the flexible screen, enhances the appearance, reduces the risk of damage to the flexible screen, and can effectively protect the flexible screen, it is now very popular among users.

[0052] However, to achieve a closed fit between the two flexible screen halves, more factors need to be considered from the perspective of the hinge assembly. This results in a complex structure and a large number of components in the hinge assembly, leading to greater difficulty in control, higher costs, and hindering the widespread adoption of electronic devices.

[0053] In view of this, and in order to solve the above problems, this application provides a hinge assembly and an electronic device. Please refer to the following: Figures 1-9 , Figure 1 This is a three-dimensional structural diagram of the rotating shaft assembly in the unfolded state according to one embodiment of this application. Figure 2 for Figure 1 Exploded view. Figure 3 for Figure 1 Side view. Figure 4 This is a top view of a hinge assembly applied to an electronic device and in an unfolded state according to one embodiment of this application. Figure 5 As described in one embodiment of this application Figure 4 A schematic diagram of a partial cross-section along the AA direction. Figure 6 This is a three-dimensional structural diagram of the rotating shaft assembly in a closed state according to one embodiment of this application. Figure 7 for Figure 6 Side view. Figure 8 This is a top view of a hinge assembly applied to an electronic device and in a closed state according to one embodiment of this application. Figure 9 As described in one embodiment of this application Figure 8 A partial cross-sectional diagram along the BB direction.

[0054] This embodiment provides a pivot assembly 1 applied to an electronic device 2. The electronic device 2 includes a flexible screen 4 and two housings 3. The pivot assembly 1 includes a base 10 and two first rotating members 20 with opposite rotation directions. Each first rotating member 20 includes a first connecting end 201 and a second connecting end 202 disposed opposite to each other. The first connecting end 201 is rotatably connected to the base 10, and the second connecting end 202 is rotatably connected to the housings 3. The first rotating members 20 and the housings 3, which are rotatable about a first rotation axis L1, jointly support the flexible screen 4. In the arrangement direction of the second rotation axes L2 parallel to the two first rotating members 20, the two first rotation axes L1 are located between the two second rotation axes L2. The pivot 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 illustrates the application of a hinge assembly 1 to an electronic device 2. The hinge assembly 1 cooperates with the housing 3 of the electronic device 2 to rotate the flexible screen 4 along a predetermined trajectory, ultimately achieving the desired shape. Therefore, the electronic device 2 can also be referred to as a flexible electronic device. While the electronic device 2 includes the flexible screen 4 and two housings 3, this does not mean that the electronic device 2 only includes the flexible screen 4 and housings 3. The electronic device 2 may also include other components, such as circuit boards, batteries, and cameras. However, in this embodiment, the components most 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 housings 3 is described.

[0056] The pivot assembly 1 includes a base 10, which typically serves to support and connect other components in the pivot assembly 1, and is a fundamental component of the pivot assembly 1. The base 10 is made of materials including but not limited to plastic, metal, etc., and this embodiment does not limit the shape and structure of the provided base 10. It can be a component of any shape, as long as it allows other components to be assembled onto the base 10.

[0057] In addition to the base 10, the rotating shaft assembly 1 also includes two first rotating members 20. Both first rotating members 20 are rotatably connected to the base 10, meaning that the first rotating members 20 can rotate relative to the base 10, thereby driving the flexible screen 4 to move. In this embodiment, the shape, structure, material, and other parameters of the two first rotating members 20 are not limited, as long as the first rotating members 20 can rotate.

[0058] The two first rotating members 20 rotate in opposite directions, as shown in the following figures: Figure 1As shown in D1. For example, when one first rotating member 20 rotates clockwise, the other first rotating member 20 rotates counterclockwise. Or, 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 towards each other to achieve the two halves of the flexible screen 4 being in contact, thus providing a motion basis for the subsequent closed state.

[0059] Optionally, the two first rotating members 20 can be arranged opposite to each other, which can be understood as at least partially spaced apart, i.e., there is a gap between the two first rotating members 20. This reduces the probability of collision when the two first rotating members 20 rotate, facilitates the connection between other components and the first rotating members 20, and also reserves assembly space for other components (such as the first support member). Of course, in other embodiments, the two first rotating members 20 can also be arranged in contact with each other; this embodiment is only used for illustrative purposes with the two first rotating members 20 arranged opposite to 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 rotation of the two first rotating members 20. Specifically, one first rotating member 20 extends 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 portions of the two first rotating members 20 occupy the same area of ​​the base 10. This not only reduces the size of the shaft assembly 1, making it more compact, but also allows portions of the two first rotating members 20 located in the same area of ​​the base 10 to be used to support other components, such as the first support member. The use of the first rotating members to support the first support member will be described below.

[0061] In addition to rotatably connecting to the base 10, the first rotating member 20 can also rotatably connect to the housing 3. This allows the first rotating member 20 to rotate relative to the base 10, changing the angle between them, and also to rotate relative to the housing 3, thus changing the angle between them. In other words, the first rotating member 20 is first connected to the housing 3, ensuring that they do not separate during rotation. Secondly, the first rotating member 20 and the housing 3 are not fixedly connected, but rotatably connected. The first rotating member 20 can rotate around the connection point O between itself and the housing 3 (see [reference]). Figure 5 and Figure 9 The first rotating component 20 rotates, thereby changing the angle between the first rotating component 20 and the housing 3.

[0062] Furthermore, the first rotating member 20 includes a first connecting end 201 and a second connecting end 202 disposed opposite to each other. The first connecting end 201 is used to rotatably connect to the base 10, and the second connecting end 202 is used to rotatably connect to the housing 3. Therefore, the extending direction of the first rotating member 20 (e.g., ...) Figure 1-3 As shown in D2, the direction from the first connecting end 201 to the second connecting end 202 can also be the direction from the second connecting end 202 to the first connecting end 201.

[0063] Optionally, the first rotating member 20 can be directly rotatably connected to the housing 3, that is, the first rotating member 20 is directly rotatably connected to the housing 3. Alternatively, the first rotating member 20 can be indirectly rotatably connected to the housing 3. In other words, the first rotating member 20 can be rotatably connected to the housing 3 through other components, such as the second rotating member, that is, the first rotating member 20 can be rotatably connected to other components, which in turn connect to the housing 3. This reduces the manufacturing difficulty of the housing 3, and the technical solution of this embodiment can be achieved using the existing structure of the housing 3. Further optionally, this embodiment does not limit the shape, structure, material, or other parameters of the housing 3, as long as it can be rotatably connected to the first rotating member 20. Specifically, the housing 3 includes, but is not limited to, the middle frame, the back shell, etc.

[0064] For the flexible screen 4, it can be disposed on one side of the two first rotating members 20 and the two housings 3, so that when the housings 3 and the first rotating members 20 rotate, the flexible screen 4 can be driven to rotate. Optionally, the flexible screen 4 can be directly disposed on the first rotating members 20 and the housings 3, or other components can be disposed on at least one of the first rotating members 20 and the housings 3, and then the flexible screen 4 can be disposed on the components. This embodiment does not limit the way the flexible screen 4 is disposed, as long as it can ensure that the flexible screen 4 can move with the housings 3 and the first rotating members 20.

[0065] The housing 3 can be rotated by external force provided by the user or other components. When the housing 3 rotates, because it is connected to the first rotating member 20, the first connecting member will not separate from the housing 3. The rotation of the housing 3 can drive the first rotating member 20 to rotate. For example... Figure 5 and Figure 9As shown, during the entire rotation process, the first rotating component 20 rotates around the second rotation axis L2, and the housing 3 rotates around the first rotation axis L1. In other words, the housing 3 rotates around a rotation center, and the extension of this rotation center in the rotation direction perpendicular to the housing 3 is the first rotation axis L1. The position of the first rotation axis L1 is not limited in this embodiment and can be designed according to the actual product. Similarly, the first rotating component 20 also rotates around a rotation center during rotation, and the extension of this rotation center in the rotation direction perpendicular to the first rotating component 20 is the second rotation axis L2. The position of the second rotation axis L2 is not limited in this embodiment and can be designed according to the actual product. Furthermore... Figure 5 and Figure 9 The dashed circle represents the trajectory of the first connecting end 201 around the second rotation axis L2.

[0066] Furthermore, this embodiment also 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 correspondingly has two second rotation axes L2 and two first rotation axes L1. Specifically, in the arrangement 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 projection of the two first rotation axes L1 onto the plane forming the two second rotation axes L2 is located between the two second rotation axes L2. In other words, the second rotation axes L2 and the first rotation axes L1 do not coincide; that is, the rotation centers of the housings 3 and the first rotating members 20 do not coincide. The rotation center of the housing 3 is set more inward, and the rotation center of the first rotating members 20 is set more outward. It can also be understood that the first rotation axis L1 is set more inward relative to the second rotation axis L2, and the second rotation axis L2 is set more outward relative to the first rotation axis L1. By designing the positional relationship between the second rotation axis L2 and the first rotation axis L1, a basis is provided for subsequent motion.

[0067] Once the aforementioned structures, their positional relationships, and connections are established, the desired waterdrop screen with the two flexible halves fitting together can be obtained. Specifically, when the aforementioned pivot assembly 1 is applied to the electronic device 2, the electronic device 2 exists in multiple states throughout its movement, including two special states: an unfolded state and a closed state. It is worth noting that since the pivot assembly 1 is applied to the electronic device 2, if the electronic device 2 has an unfolded state and a closed state, then the pivot assembly 1 also has corresponding unfolded and closed states. Therefore, the unfolded state of the electronic device 2 and the unfolded state of the pivot assembly 1 are essentially the same concept, and the closed state of the electronic device 2 and the closed state of the pivot assembly 1 are essentially the same concept. For the electronic device 2, the unfolded state refers to the state where the flexible screen 4 is flattened, that is, when the entire surface of the flexible screen 4 is flush. In other words, a flexible screen 4 can be divided into left and right halves of the flexible screen 4, with an angle of 180° between the left and right halves. The closed state refers to the state after the flexible screen 4 has rotated 90° under the drive of the first rotating component 20 and the housing 3. At this time, parts of the left and right halves of the flexible screen 4 are parallel to each other, and parts of the flexible screen 4 are fitted together, i.e., the included angle is 0°. For the rotating shaft assembly 1, the unfolded state refers to the state where 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 where the distance between the two first connecting ends 201 is greater than the distance between the two second connecting ends 202, and the two first rotating members 20 are at an angle. That is, the two first rotating members 20 are not arranged parallel to each other, but at an angle.

[0068] like Figure 5 and Figure 9 As shown, during the process of the electronic device 2 moving from the unfolded state to the closed state, the housing 3 rotates around the first rotation axis L1 due to the external force applied to it by the device or other components. The housing 3 is rotatably connected to the first rotating component 20, and since the first rotation axis L1 is not at the connection point O between the housing 3 and the first rotating component 20, the first rotating component 20 will also rotate relative to the base 10 around the second rotation axis L2 when the housing 3 rotates. When the housing 3 rotates by a certain angle, the connection point O between the first rotating component 20 and the housing 3 will also rotate by the same angle. Because the second rotation axis L2 does not coincide with the first rotation axis L1, if the first rotating component 20 also rotates by the same angle, the second connecting end 202 of the first rotating component 20 cannot contact the connection point O between the first rotating component 20 and the housing 3, and the movement cannot continue. Furthermore, since the first rotation axis L1 is located inwards and the second rotation axis L2 is located outwards, the first rotating component 20 must rotate by an angle greater than the rotation angle of the housing 3; that is, the first rotating component 20 must rotate a certain angle more than the housing 3 to ensure that the first rotating component 20 is always connected to the housing 3.

[0069] Therefore, when the electronic device 2 is in the closed state, that is, when the flexible screen 4 on the side away from the base 10 is in contact, it can be understood that the housing 3 drives the flexible screen 4 to rotate 90°, making the horizontally set flexible screen 4 vertically set, and the left and right halves of the flexible screen 4 in contact. At this time, the two housings 3 are also set in parallel, that is, the angle between the two housings 3 is 0°. Therefore, the rotation angle of the two first rotating parts 20 needs to be larger, for example, greater than 90°, so that the angle between the two first rotating parts 20 is greater than 0°, so that the first rotating parts 20 are always rotating and connected to the housing 3. In other words, when the electronic device 2 is in the unfolded state, the first rotating parts 20 are set in parallel with the housing 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 parts 20 and the housing 3 is greater than 180°. This makes the distance between the two first connecting ends 201 on the side closer to the base 10 greater than the distance between the two second connecting ends 202 on the side away from the base 10, thereby realizing the closed state of the rotating shaft assembly 1, which is clamped by the two first rotating parts 20 to form a "smaller at the top and larger at the bottom" spatial shape. Therefore, the two halves of the flexible screen 4 will also form a shape that is smaller at the top and larger at the bottom when they are not bonded together. At this time, the shape of the flexible screen 4 is very similar to a water droplet, so it is usually called a water droplet screen.

[0070] Furthermore, within this space, the flexible screen 4 has greater room for bending on the side closer to the base 10, i.e., at its lower end. In other words, the lower end of the flexible screen 4 has a larger radius of curvature for bending, preventing excessive stress concentration at the bending point and thus reducing or even eliminating the number of creases caused by bending, thereby improving the performance and lifespan of the flexible screen 4.

[0071] In summary, this embodiment only requires a rotating shaft assembly 1 consisting of a base 10 and two first rotating members 20. When the rotating shaft assembly 1 is applied to the electronic device 2, by designing the positional relationship between the axis of the first rotating member 20 and the axis of the housing 3, a waterdrop screen shape can be achieved in the closed state, i.e., two halves of the flexible screen 4 are fitted together. Furthermore, the radius of curvature of the lower end of the flexible screen 4 can be increased. This not only simplifies the structure of the rotating shaft assembly 1, reducing its cost, the number of components, and its weight; reducing the need for component assembly, lowering management difficulty, and increasing the widespread adoption of the electronic device 2; but also reduces or even eliminates the number of creases, improving the performance and lifespan of the flexible screen 4.

[0072] Optionally, in actual production, the specific angle of rotation of the first rotating component 20 can be adjusted by controlling the position of the first axis and the second axis according to the needs, thereby adjusting the shape of the water droplet screen.

[0073] Please refer to this again. Figure 5 and Figure 9In this embodiment, when the rotating shaft assembly 1 is in a closed state, in the 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, besides the arrangement direction parallel to the two second rotation axes L2, where the two first rotation axes L1 are located between 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 the arrangement direction perpendicular to the two second rotation axes L2, the second rotation axis L2 of the first rotating member 20 is positioned higher, and the first rotation axis L1 of the housing 3 is positioned lower. In other words, when the rotating shaft assembly 1 is in the closed state, the second rotation axis L2 is closer to the second connecting end 202 than the first rotation axis L1.

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

[0076] Of course, the problem of changes in height can also be solved by other technical solutions in other embodiments. Optionally, the dimension of the first rotating member 20 in its extension direction is variable, that is, the dimension of the first rotating member 20 in its extension direction is extendable or shortenable. When the housing 3 rotates at a certain angle, the first rotating member 20 can not only rotate at a larger angle, but the first rotating member 20 can also adaptively extend or shorten to compensate for the displacement difference of the first rotating member 20 in the vertical direction, so that the first rotating member 20 can always be rotatably connected to the housing 3.

[0077] Please refer to Figures 10-11 , Figure 10 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application. Figure 11 for Figure 10The side view. In this embodiment, the rotating shaft assembly 1 also includes two second rotating members 30, one end of which 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 rotating shaft assembly 1 may also include a second rotating member 30. One end of the second rotating member 30 is rotatably connected to the second connecting end 202 of the first rotating member 20, and the other end is connected to the housing. When the first rotating member 20 rotates relative to the second rotating member 30, it can be understood that the first rotating member 20 rotates relative to the housing, thereby achieving an indirect rotatable connection between the first rotating member 20 and the housing, thus reducing the design complexity of the housing. Furthermore, this embodiment does not limit the material, shape, or structure of the second rotating member 30, 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 rotating groove can be formed 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 rotating groove of the second connecting end 202 and the second rotating member 30, thereby allowing the second connecting end 202 to be rotatably connected to the second rotating member 30.

[0080] Optionally, the "connection" between the second rotating component 30 and the housing includes, but is not limited to, fixed connection or detachable connection, and other connection methods. When the second rotating component 30 is fixedly connected to the housing, the second rotating component 30 and the housing 3 are an integral structure, that is, the second rotating component 30 and the housing are manufactured through the same process. However, for ease of understanding, the second rotating component 30 and the housing 3 are artificially given different names. When the second rotating component 30 is detachably connected to the housing, the second rotating component 30 and the housing can be detachably connected by opening screw holes on the second rotating component 30 and the housing, and then installing screws in the screw holes. Of course, in other embodiments, a detachable connection can also be achieved by means of snap-fit ​​connection, etc. Through the connection between the second rotating component 30 and the housing, the consistency of their rotation angles can be ensured, that is, the rotation angle of the second rotating component 30 is the rotation angle of the housing, thereby reducing the sway of the housing and improving the stability of the housing rotation.

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

[0082] Please refer to this again. Figure 10In this embodiment, when the rotating shaft assembly 1 is in the unfolded state, there is a clearance gap 31 between the surface of the first rotating member 20 that is opposite to the mounting surface 203 and the second rotating member 30. The unfolded state of the rotating shaft assembly 1 has been described in detail above, and will not be repeated here. When the rotating shaft assembly 1 is in the unfolded state, the vertically arranged first rotating member 20 and second rotating member 30 can have a clearance gap 31 between the surface of the first rotating member 20 that is opposite to the mounting surface 203 and the second rotating member 30. In other words, there is a gap between the second rotating member 30 and the first rotating member 20. Since the second rotating member 30 rotates at a greater angle relative to the housing 3, it will not remain stationary with respect to the housing 3; the second rotating member 30 will also rotate relative to the housing 3, that is, the second rotating member 30 will rotate towards the direction closer to the first rotating member 20. Therefore, reserving a clearance gap 31 between the first rotating member 20 and the second rotating member 30 in the unfolded state can prevent jamming during the movement of the rotating shaft assembly 1, ensuring smooth and safe movement.

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

[0084] The first rotating member 20 has a mounting surface 203 for mounting a flexible screen. The flexible screen can be directly mounted on the mounting surface 203, or it can be mounted on the mounting surface 203 through other components. Therefore, the mounting surface 203 can also be understood as the surface of the first rotating member 20 closest to the flexible screen. In other words, the mounting surface 203 is the upper 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 disposed on the side close to the surface opposite to the mounting surface 203. Alternatively, at least a portion of the second rotating member 30 can be vertically arranged with the first rotating member 20 along a direction perpendicular to the extension of the two first rotating members 20. This reduces the size of the shaft assembly 1 in the extension direction of the first rotating member 20, making the shaft assembly 1 more compact. In other words, a portion of the second rotating member 30 is disposed on the lower surface of the first rotating member 20.

[0086] Furthermore, the phrase "at least some of the second rotating members 30 are located on the side facing away from the mounting surface 203" mentioned above can be understood as all the second rotating members 30 being located on the side facing away from the mounting surface 203. In this case, the second rotating members 30 are also rotatably connected to the side of the first rotating member 20 facing away from the mounting surface 203. Alternatively, some of the second rotating members 30 are located on the side facing away from the mounting surface 203, while the remaining second rotating members 30 are located on other sides of the first rotating member 20. In this case, the second rotating members 30 can be located at the end of the first rotating member 20 facing away from the other first rotating member 20. This embodiment is only illustrated by illustratively stating that some of the second rotating members 30 are all located on one side of the first rotating member 20.

[0087] Please refer to this again. Figure 2 In this embodiment, a rotation space 11 is provided on one side of the base 10. The first rotating member 20 includes an assembly part 21 and a connecting part 22 provided 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. A first rotating part 220 is provided on the outer peripheral sidewall of the connecting part 22, and a second rotating part 110 is provided on the inner sidewall of the rotation space 11. The first rotating part 220 and the second rotating part 110 cooperate to make the first rotating member 20 rotate to connect to the base 10.

[0088] Having described 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 housing 3, this embodiment will continue to describe the relationship between the base 10 and the first rotating member 20. In this embodiment, a rotation space 11 can be provided on one side of the base 10, and at least a portion of the first rotating member 20 can be disposed within the rotation space 11, thereby achieving the purpose of rotatably connecting the first rotating member 20 to the base 10. Furthermore, the overall thickness of the rotating shaft assembly 1 can be reduced, making the rotating shaft assembly 1 more compact. Additionally, the phrase "at least a portion of the first rotating member 20 can be disposed within the rotation space 11" mentioned above can be understood as all the first rotating members 20 being disposed within the rotation space 11, thereby further reducing the overall thickness of the rotating shaft assembly 1. Alternatively, some of the first rotating members 20 can be disposed within the rotation space 11, while the remaining first rotating members 20 are disposed outside the rotation space 11, which facilitates the installation of subsequent components onto the first rotating member 20. This embodiment is only illustrated with the example of a portion of the first rotating member 20 being disposed within the rotation space 11.

[0089] The first rotating member 20 can be divided into an assembly part 21 and a connecting part 22 disposed on one side of the assembly part 21. The assembly part 21 is used to house the connecting part 22 and also to connect the flexible screen. The connecting part 22 is used for rotatable connection with the base 10. Optionally, the assembly part 21 and the connecting part 22 can be an integral structure or a separate structure. When the assembly part 21 and the connecting part 22 are an integral structure, they can be manufactured in one process. For ease of understanding, different names have been used for the assembly part 21 and the connecting part 22. When the assembly part 21 and the connecting part 22 are separate structures, they can be formed separately and then assembled together in various ways. This embodiment does not limit the cooperation relationship between the assembly part 21 and the connecting part 22. Furthermore, this embodiment does not limit the material, shape, or structure of the assembly part 21, as long as the assembly part 21 can perform the assembly function. Furthermore, the assembly part 21 has the second connecting end 202 mentioned above for rotating the connecting housing, and the connecting part 22 has the first connecting end 201 mentioned above for rotating the connecting base 10. Since the first connecting end 201 and the second connecting end 202 are arranged opposite to each other, the position of the connecting part 22 can also be understood as being provided on one side of the end of the assembly part 21 that is arranged opposite to the second connecting end 202.

[0090] For the connecting portion 22, in this embodiment, a first rotating portion 220 is provided on the outer peripheral sidewall of the connecting portion 22, and a second rotating portion 110 is provided on the inner sidewall of the rotating space 11. By having at least a portion of the connecting portion 22 disposed 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 of the first rotating portion 220 and the second rotating portion 110 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 illustrated with the first rotating portion 220 as a rotating groove and the second rotating portion 110 as a rotating block.

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

[0092] Please refer to this as well. Figures 12-13 , Figure 12 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application. Figure 13 for Figure 12 The side view. In this embodiment, the rotating shaft assembly 1 also 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 used to slide to connect to the housing or the second rotating member 30, so that the third rotating member 40 can be driven to rotate under the rotation of the housing and also 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 functions as a rotating component. This embodiment does not limit the material, shape, or structure of the third rotating member 40, as long as it can achieve the rotating function. 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 housing or the second rotating member 30. In other words, the third rotating member 40 can be slidably connected to the housing, or the third rotating member 40 can be slidably connected to the second rotating member 30. This embodiment is only illustrated by the example of the third rotating member 40 being slidably connected to the second rotating member 30.

[0094] 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 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. Since the third axis L3 is spaced apart from the first rotation axis L1 of the housing 3 (i.e., the third axis L3 and the first rotation axis L1 do not coincide), 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 during rotation (the sliding direction is as follows). Figure 12 and Figure 13 (As shown in D3) This is to compensate for the displacement difference generated during rotation. By setting a third rotating component 40, the rotation of the shaft assembly 1 can be prevented from being supported by the first rotating component 20 alone. The joint rotation of the third rotating component 40 and the first rotating component 20 can improve the stability of rotation and prevent excessive stress concentration, which could lead to damage to the first rotating component 20. In addition, the third rotating component 40 can also be used to cooperate with other subsequent components to achieve other functions.

[0095] Optionally, such 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 make the third rotating member 40 slidably connected 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 groove. For example, when the first sliding portion 41 is a slider, the second sliding portion 32 is a groove. When the first sliding portion 41 is a groove, the second sliding portion 32 is a slider. This embodiment is only illustrated with the example of the first sliding portion 41 being a slider and the second sliding portion 32 being a groove.

[0096] Please refer to Figure 14 , Figure 14 This is a three-dimensional structural diagram of the rotating shaft assembly according to another embodiment of this application. In this embodiment, the rotating shaft assembly 1 further includes a synchronizing member 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 synchronizing element 50 can be added to the third rotating element 40. The synchronizing element 50 works in conjunction with the two third rotating elements 40 to achieve synchronized rotation. Specifically, one end of the synchronizing element 50 is rotatably connected to the third rotating element 40, and the other end is rotatably connected to the other third rotating element 40. Thus, when either of the two housings 3 rotates, it can directly or indirectly drive one of the third rotating elements 40 to rotate, thereby driving the synchronizing element 50 to rotate synchronously. The rotation of the synchronizing element 50 can drive the other third rotating element 40 to rotate, thereby driving the other housing 3 to rotate, so that the two housings 3 move synchronously in opposite directions. By adding the synchronizing element 50, the time for the rotating shaft assembly 1 and the electronic device 2 to open and close can be reduced. This embodiment does not limit the shape, material, or structure of the synchronizing element 50, as long as it can achieve the function of synchronized rotation.

[0098] Optionally, the synchronizing member 50 and the third rotating member 40 can be rotatably connected by gears, belts, or other means. This embodiment is only illustrated by illustrating the rotatable connection between the synchronizing member 50 and the third rotating member 40 via gears. For example, the synchronizing member 50 and the third rotating member 40 can be provided with multiple teeth spaced apart along the direction of rotation to form a gear structure.

[0099] Optionally, the number of synchronizing elements 50 is an even number, such as 2, 4, 6, etc. This embodiment is only illustrated with an example of 2 synchronizing elements 50. The two synchronizing elements 50 are rotatably connected, with one synchronizing element 50 rotatably connected to a third rotating element 40, and the other synchronizing element 50 rotatably connected to another third rotating element 40.

[0100] Please refer to this as well. Figures 15-17 , Figure 15 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application. Figure 16 for Figure 15 Exploded view. Figure 17 This is a schematic diagram of the first and second mating parts according to one embodiment of this application. In this embodiment, the synchronizing member 50 and the third rotating member 40 are disposed on the same side of the base 10, and at least one of the synchronizing member 50 and the third rotating member 40 has a first mating part 51 on the side 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. The first rotating shaft 60 passes through the first mating part 51 and the synchronizing member 50 or the third rotating member 40 with the first mating part 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 disposed on the side of the first mating part 51 away from the base 10. A second mating part 62 is disposed on the side of the sliding member 61 near the first mating part 51. The blocking member 63 is fixed to the first rotating shaft 60 and is disposed on the side of the sliding member 61 away from the base 10. The first elastic element 64 is sleeved on the first rotating shaft 60 and is located between the blocking element 63 and the sliding element 61.

[0101] The third rotating component 40 is used to rotate synchronously with the rotation of the housing 3 (e.g., Figure 15 As shown in D1), this causes the first mating part 51 to rotate, and the first mating part 51 and the second mating part 62 cooperate with each other to make the sliding member 61 slide in a direction closer to or away from the third rotating member 40 (as shown in D1). Figure 15 (As shown in D4); when the slider 61 slides away from the third rotating member 40, the first elastic member 64 is in a compressed state, causing the second mating part 62 to abut against the first mating part 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, in addition to achieving synchronous rotation with the third rotating member 40 and the synchronizing member 50, can also achieve a hovering function. Specifically, the synchronizing member 50 and the third rotating member 40 are located on the same side of the base 10, facilitating a rotatable connection between them. In this embodiment, at least one of the synchronizing member 50 and the third rotating member 40 may have a first mating part 51 on the side opposite to the base 10. In other words, the first mating part 51 may be provided on the side of the synchronizing member 50 opposite to the base 10, or on the side of the third rotating member 40 opposite to the base 10, or on the sides of both the synchronizing member 50 and the third rotating member 40 opposite to the base 10. This embodiment is only illustrated by showing the first mating part 51 on the side of the synchronizing member 50 opposite to the base 10.

[0103] The first rotating shaft 60 is typically connected to the base 10 and is used to allow other components to be fitted or fixed onto the first rotating shaft 60, or for the first rotating shaft 60 to pass through other components to achieve the assembly of multiple components, enabling multiple components to cooperate and providing a basis for subsequent rotation and sliding. In this embodiment, the first rotating shaft 60 may pass through the first mating part 51, as well as those synchronizing members 50 or third rotating members 40 that have the first mating part 51. It can also be understood that whichever component has the first mating part 51, the corresponding component is fitted onto the first rotating shaft 60, and the number of components with the first mating part 51 is the same as the number of first rotating shafts 60. Figure 15 As shown, the two synchronizing parts 50 are provided with a first mating part 51, so the number of first rotating shafts 60 is two.

[0104] The sliding member 61 is sleeved on the first rotating shaft 60, and the sliding member 61 can slide axially relative to the first rotating shaft 60 (e.g., Figure 15 (As shown in D4). The slider 61 is sleeved on the two rotating shafts, thus restricting the rotation of the slider 61 and allowing it to slide only relative to the first rotating shaft 60. Of course, other methods can also be used to achieve the sliding of the slider 61 in other embodiments. The slider 61 is located on the side of the first mating part 51 away from the base 10, and the part sleeved on the first rotating shaft 60 has a second mating part 62 on the side near the first mating part 51, so that the first mating part 51 and the second mating part 62 are arranged face to face, which facilitates the subsequent mutual cooperation between the first mating part 51 and the second mating part 62. The slider 61 and the second mating part 62 can be an integral structure or a separate structure. When the slider 61 and the second mating part 62 are an integral structure, the slider 61 and the second mating part 62 can be manufactured in one process. For ease of understanding, the slider 61 and the second mating part 62 have been given different names. When the slider 61 and the second mating part 62 are separate structures, the slider 61 and the second mating part 62 can be formed separately and then assembled together in various ways. This embodiment does not limit the mating relationship between the slider 61 and the second mating part 62.

[0105] The blocking member 63 is typically fixed to the first rotating shaft 60 to restrict the movement of other components. Optionally, this embodiment provides several specific implementations for fixing the blocking member 63 to the first rotating shaft 60. 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 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 material of the blocking member 63 includes, but is not limited to, plastic, metal, etc., and this embodiment does not limit the provided blocking member 63; it can be a component of any shape, as long as the blocking member 63 can restrict 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 used to illustrate the blocking member 63 being fitted onto the first rotating shaft 60.

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

[0107] It should be noted that the synchronizing element 50, the sliding element 61, the blocking element 63, and the first elastic element 64 can all be fitted with the first rotating shaft 60 to achieve the desired state, and provide a basis for subsequent rotation and sliding. Alternatively, it can be understood that the synchronizing element 50, the rotating element, the sliding element 61, the blocking element 63, and the first elastic element 64 can all have corresponding holes, and the first rotating shaft 60 passes through the corresponding holes in sequence.

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

[0109] When the slider 61 slides away from the third rotating member 40, the blocking member 63 on the other side restricts the range of motion of the first elastic member 64, allowing the first elastic member 64 to connect with the slider 61 and the blocking member 63. The slider 61 compresses the first elastic member 64, placing it in a compressed state. It should be noted that the compression of the first elastic member 64 can occur in a compressed, balanced, or stretched state in the initial state before the third rotating member 40 rotates. This embodiment does not limit the initial state of the first elastic member 64, as long as the slider 61 can retract to ensure that the first elastic member 64 is in a compressed state.

[0110] Optionally, the first elastic element 64 is disposed in a pre-compressed state between the sliding element 61 and the blocking element 63. The "pre-compressed state" mentioned here refers to the initial state of the first elastic element 64 being compressed when the third rotating element 40 is not rotating. Alternatively, it can be understood that the first elastic element 64 is already compressed when the first mating part 51 and the second mating part 62 are not mated, i.e., when the sliding element 61 is not sliding towards or away from the third rotating element 40. The pre-compressed first elastic element 64 can compensate for the axial movement of the first elastic element 64 relative to the first rotating shaft 60. Thus, even if the dimensions of the first elastic element 64 change or its structure loosens after the rotating shaft assembly 1 has been used for a period of time, the pre-compressed first elastic element 64 can still compensate for the axial movement of the first elastic element 64 relative to the first rotating shaft 60, thereby improving the stability of the rotating shaft assembly 1, ensuring the long-term consistency of torque in the rotating shaft assembly 1, and improving torque balance.

[0111] When the first elastic element 64 is in a compressed state, it provides a rebound force to the sliding element 61, causing the second mating part 62 to tightly abut against the first mating part 51. Simultaneously, this rebound force can be converted into pressure exerted by the second mating part 62 on the first mating part 51. Since the frictional force between the second mating part 62 and the first mating part 51 is positively correlated with the pressure—that is, the greater the pressure, the greater the frictional force—when the frictional force exceeds a preset value and the third rotating element 40 stops rotating, the third rotating element 40 will not rotate relative to the axis of rotation. The sliding element 61 and the third rotating element 40 remain fixed, meaning the third rotating element 40 is in a stable state. A stable state means that when the third rotating element 40 stops rotating, it will not rotate relative to the sliding element 61 due to its own weight, external forces, or other reasons, thus preventing it from falling off. Alternatively, it can be understood that under the rebound force of the first elastic element 64, the sliding element 61 applies additional pressure to the third rotating element 40. When the frictional force between the third rotating element 40 and the sliding element 61 exceeds a preset value, the sliding element 61 will not rotate relative to the third rotating element 40, thereby fixing the third rotating element 40 and enabling it to achieve functions such as hovering and self-tightening. The preset value can be the weight of the third rotating element 40 or an external force acting on it, such as the rebound force generated when the flexible screen 4 is bent, or the weight of the entire electronic device 2.

[0112] Furthermore, to make the third rotating member 40 continue to rotate, a force greater than the preset force needs to be applied to change the state of the third rotating member 40 from being stationary relative to the sliding member 61 to rotating relative to the sliding member 61. At this time, part of the force is used to counteract the frictional force generated in the above process, while the remaining part is used to make the third rotating member 40 continue to rotate. When an external force greater than the preset force is applied, the third rotating member 40 can continue to rotate, and the sliding member 61 changes from sliding in a direction away from the third rotating member 40 to sliding in a direction closer to the third rotating member 40. When the slider 61 slides toward the direction closer 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 decreases. Therefore, the pressure provided by the first elastic member 64 decreases, and the friction force between the slider 61 and the third rotating member 40 decreases. At this time, only a smaller force is needed to make the third rotating member 40 rotate, so the third rotating member 40 is easier to rotate. Under the action of the rebound force of the first elastic member 64, the slider 61 accelerates to slide toward the direction closer to the third rotating member 40, preparing for the next hovering of the torque component.

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

[0114] In summary, compared to related technologies that only use a cam to achieve the hovering function, this embodiment, through the mutual cooperation of the first mating part 51, the second mating part 62, and the first elastic element 64, can provide greater frictional force, improve frictional performance, and achieve functions such as hovering and self-tightening. In other words, when the same amount of frictional force is required, the dimensions of the first mating part 51, the second mating part 62, and the first elastic element 64 in this embodiment are smaller, which in turn allows for a corresponding reduction in the dimensions of other components. This reduces the overall size of the shaft assembly 1, improves the compactness of the shaft assembly 1 structure, and saves space for other components.

[0115] Please refer to this again. Figure 17 In this embodiment, the first mating part 51 includes a plurality of first protrusions 510 spaced apart, and the second mating part 62 includes a plurality of second protrusions 620 spaced apart. 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 and the crests 511 of the second protrusions 620 come into contact, the first elastic member 64 is in a compressed state, causing the second mating part 62 to abut against the first mating part 51.

[0116] The first mating part 51 and the second mating part 62 may each include a plurality of first protrusions 510 and a plurality of second protrusions 620. Each of the first protrusions 510 and the second protrusions 620 has a peak 511. In addition to the peak 511, the first protrusions 510 and the second protrusions 620 also have troughs and slopes. The peak 511 refers to the highest point of the protrusion, the trough refers to the lowest point of the protrusion, and the slope refers to the side surface between the peak 511 and the trough.

[0117] When the slider 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 in a compressed state, causing the slider 61 to abut against the third rotating member 40; when the third rotating member 40 stops rotating, it is in a stable state. This embodiment does not limit the provided first protrusion 510 and second protrusion 620; they can be components of any shape, as long as the first protrusion 510 and 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 engagement state of the first protrusion 510 and the second protrusion 620 is such that the crest 511 and the trough are opposite each other. Then, when the third rotating member 40 rotates relative to the sliding member 61, the engagement state of the first protrusion 510 and the second protrusion 620 is such that the crest 511 slides along the inclined plane until the crest 511 and the crest 511 are opposite each other. At this time, the distance between the sliding member 61 and the third rotating member 40 is the largest. Correspondingly, the compression degree of the first elastic member 64 is the largest, which can provide the largest rebound force, thereby further improving the friction performance of the rotating shaft assembly 1 and improving the hovering and self-tightening effect. Next, as the third rotating member 40 continues to rotate relative to the sliding member 61 under the action of external force, the engagement state of the first protrusion 510 and the second protrusion 620 is such that the crest 511 continues to slide along the inclined plane until the crest 511 aligns with the trough. During this process, the distance between the sliding member 61 and the third rotating member 40 gradually decreases. Correspondingly, the compression degree of the first elastic member 64 weakens, and the rebound force it can provide decreases. 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 the above movement to prepare for the next hovering of the rotating shaft assembly 1.

[0119] Furthermore, since the rotating shaft assembly 1 can hover when the crests 511 are opposite each other, the number, position, and size of the protrusions can determine the hovering angle. For example, when there are 6 first protrusions 510 in the first mating part 51 and the first protrusions 510 are evenly spaced, the rotating shaft 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 three-dimensional structural diagram of the rotating shaft assembly according to another embodiment of this 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 synchronizing member 50 and the third rotating member 40, and is connected to the base 10. A sliding member 61 is sleeved on the second rotating shaft 65, a 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 in a compressed state, causing the second mating part 62 to abut against the first mating part 51.

[0121] In addition to the first rotating shaft 60 and the first elastic element 64, the rotating shaft assembly 1 may also include a second rotating shaft 65 and the first elastic element 64. The second rotating shaft 65 is typically connected to the base 10 and is used to allow other components to be fitted or fixed onto the second rotating shaft 65, or for the second rotating shaft 65 to pass through other components to achieve the assembly of multiple components, allowing multiple components to cooperate. The second rotating shaft 65 can pass through at least one of the remaining synchronizing elements 50 and the third rotating elements 40. In other words, when only a portion of the two third rotating elements 40 and the synchronizing elements 50 has a first mating part 51, the first rotating shaft 60 can pass through the component with the first mating part 51, and in this case, the second rotating shaft 65 can be used to pass through the remaining components without the first mating part 51. Figure 18 As shown, the two synchronizing members 50 are provided with a first mating part 51, the first rotating shaft 60 passes through the two synchronizing members 50, and the second rotating shaft 65 passes through the two third rotating members 40.

[0122] Furthermore, in this embodiment, the sliding member 61 can be sleeved on the second rotating shaft 65, and the blocking member 63 can be fixed to the second rotating shaft 65. Therefore, the second elastic member 66 can be sleeved on the second rotating shaft 65 and disposed 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, the 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 can also abut against and compress 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 can use their rebound force to make the second mating part 62 tightly abut against the first mating part 51. The second mating part 62 provides a certain positive pressure to the first mating part 51, thereby increasing the friction between the sliding member 61 and the third rotating member 40, thereby further improving the hovering effect. In other words, the size of the rotating shaft assembly 1 can be further reduced.

[0124] Optionally, the second elastic element 66 has a pre-compressed state. The pre-compressed state has been described in detail above and will not be repeated here.

[0125] Please refer to Figures 19-20 , Figure 19 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application. Figure 20This is an exploded view of the first rotating shaft, the first mating part, and the friction member in one embodiment of this 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 away from the base 10. At least a portion of the outer periphery of the first rotating shaft 60 is provided with a flat structure 600. The friction member 67 and the synchronizing member 50 or the third rotating member 40, which is provided with the first mating part 51, are all sleeved on the flat structure 600, so that the rotation of the first mating part 51 can drive the first rotating shaft 60 and the friction member 67 to rotate.

[0126] Friction element 67 is typically used to provide frictional force. The material of friction element 67 includes, but is not limited to, materials with a high coefficient of friction such as plastics and metals. This embodiment does not limit the provided friction element 67; it can be any shape, as long as it can provide the frictional force of an elastic element. Friction element 67 is fitted onto the first rotating shaft 60, i.e., friction element 67 has a hole through which the first rotating shaft 60 passes.

[0127] The aforementioned "flat structure 600" refers to a structure whose circumferential shape is circular. If the first rotating shaft 60 is circular, it would be difficult to fix the component fitted onto the first rotating shaft 60. Therefore, various processes (such as milling) can be used to process the circular shape into other shapes to achieve fixation or clamping during the rotation of the rotating component. Thus, the flat structure 600 can be understood as a structure with a non-circular circumferential shape. Optionally, the flat structure 600 can be square, rectangular, elliptical, etc., in the circumferential direction. Optionally, the flat structure 600 is formed by opening a limiting groove in the cylindrical first rotating shaft 60, thereby transforming at least part of the cylindrical first rotating shaft 60 into an elliptical or rectangular shape. The flat structure 600 is used to limit the circumferential movement of other components, keeping them relatively stationary relative to the first rotating shaft 60, meaning that the rotation of the first rotating shaft 60 will also cause the other components to rotate together. This embodiment does not limit the flat structure 600 provided; it can be any shape of component, 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 flat structure 600 are integrally formed components, but for ease of understanding, the first rotating shaft 60 and the flat structure 600 have been given different names.

[0128] In this embodiment, the friction member 67 and the synchronizing member 50 or the third rotating member 40, which has a first mating part 51, are both sleeved on the flat structure 600 of the first rotating shaft 60. It can be understood that the shape of the through hole 810 of the friction member 67 and the third rotating member 40 or the synchronizing member 50 corresponds to the shape of the flat structure 600, so that the friction member 67 and the third rotating member 40 or the synchronizing member 50 are fixed on the first rotating shaft 60. That is, when the third rotating member 40 or the synchronizing member 50, which has the first mating part 51, rotates, it can drive the first rotating shaft 60 to rotate, thereby driving the first rotating shaft 60 and the friction member 67 to rotate. It should be noted that since the shape of the hole in the sliding member 61 is circular, it does not match the shape of the flat structure 600, i.e., there is a gap between the sliding member 61 and the flat structure 600, so the sliding member 61 can rotate relative to the first rotating shaft 60.

[0129] Since the friction element 67 is located on the side of the blocking element 63 away from the base 10, when the friction element 67 rotates synchronously with the first rotating shaft 60, the friction element 67 will rub against the blocking element 63, thereby generating circumferential friction. When one end of the first elastic element 64 applies a rebound force to the sliding element 61, the other end of the first elastic element 64 also applies a rebound force to the blocking element 63, thereby causing the blocking element 63 to apply pressure to the friction element 67. As the compression of the first elastic element 64 increases, the pressure continuously increases, and therefore the circumferential friction also continuously increases, which can further improve the suspension and self-tightening effect of the rotating shaft assembly 1, and further reduce the size of the rotating shaft assembly 1 in this embodiment, thereby further improving the compactness of the rotating shaft assembly 1 structure.

[0130] Please refer to this as well. Figures 21-22 , Figure 21 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application. Figure 22 for Figure 21 Partial exploded view. In this embodiment, the rotating shaft assembly 1 also includes a mounting member 68, which is fixed to the first rotating shaft 60 and disposed on the side of the blocking member 63 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 away from the blocking member 63.

[0131] Mounting member 68 is fixed to the first rotating shaft 60 and is typically used to connect the rotating shaft assembly 1 to other components for assembly, etc. The material of mounting member 68 includes, but is not limited to, plastic, metal, etc., and this embodiment does not limit the provided mounting member 68; it can be a component of any shape, as long as it allows the rotating shaft assembly 1 to be connected to other components. Optionally, the mounting member 68 in this embodiment has mounting holes. Other components, such as decorative parts, can be connected to the rotating shaft assembly 1 via the mounting holes using screws. Furthermore, when mounting member 68 is installed on other components, it can be kept stationary, i.e., mounting member 68 will not slide or rotate relative to the first rotating shaft 60.

[0132] By providing a friction element 67 on each of the opposite sides of the mounting member 68, the rebound force at the other end of the first elastic element 64 when it is compressed can be applied to the two friction elements 67, further increasing the friction force. This allows the size of the shaft assembly 1 in this embodiment to be further reduced, thereby further improving the compactness of the shaft assembly 1 structure. Additionally, the presence of the mounting member 68 also allows the blocking member 63 to be fixed to the first shaft 60 to limit the movement of the first elastic element 64.

[0133] Please refer to this as well. Figures 23-24 , Figure 23 This is a three-dimensional structural diagram of the rotating shaft assembly in another embodiment of this application. Figure 24 for Figure 23 Partial exploded view. In this embodiment, the first rotating shaft 60 has a snap-fit ​​groove 601 on the periphery of the end of the blocking member 63 away from the base 10, and the rotating shaft assembly 1 also includes a snap-fit ​​member 69, part of which is disposed in the snap-fit ​​groove 601.

[0134] The latching member 69 is typically used to restrict the movement of other components. The latching member 69 is sleeved on the first rotating shaft 60, and is located on the side of the friction member 67 opposite to the blocking member 63. The latching member 69 is sleeved on the first rotating shaft 60, meaning it has a hole through which the first rotating shaft 60 passes. The material of the latching member 69 includes, but is not limited to, plastic, metal, etc., and this embodiment does not limit the provided latching member 69; it can be a component of any shape, as long as it can restrict the movement of other components. Optionally, the latching member 69 can be a shaft clip.

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

[0136] Please refer to this again. Figures 4-5 This embodiment provides an electronic device 2, including a flexible screen 4, two housings 3, and a rotating shaft assembly 1 as provided in the above embodiment of this application. At least a portion of the two housings 3 are respectively disposed on opposite sides of the rotating shaft assembly 1, and the housings 3 are rotatably connected to the first rotating member 20 in the rotating shaft assembly 1. The flexible screen 4 is disposed on one side of the two first rotating members 20 and the two housings 3.

[0137] The electronic device 2 provided in this embodiment includes, but is not limited to, mobile terminals such as flexible screen mobile phones, tablet computers, laptops, PDAs, personal computers (PCs), personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as 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 this 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 present a waterdrop screen shape when it is in the closed state.

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

[0139] Please refer to this again. Figure 1 , Figures 25-28 , Figure 25 This is a three-dimensional structural diagram of an electronic device after the flexible screen has been removed, according to one embodiment of this application. Figure 26 for Figure 25 Exploded view. Figure 27 In another embodiment of this application Figure 4 A schematic diagram of a partial cross-section along the AA direction. Figure 28 In another embodiment of this application Figure 8 A partial cross-sectional view along the BB direction. In this embodiment, the electronic device 2 also includes a first support member 70 disposed between the two first rotating members 20 for abutting against the flexible screen 4. The electronic device 2 has an unfolded state in which the extending 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 unfolded state, one of the first rotating members 20 has a protrusion 23 on the side facing closer to the other first rotating member 20, and the first support member 70 abuts against the protrusion 23. Rotation of the protrusion 23 can move the first support member 70 toward the direction closer to the base 10, and after the first support member 70 abuts against the base 10, the first support member 70 separates from the protrusion 23.

[0140] The first support member 70 is used to abut against the flexible screen 4, improving the mechanical strength of the flexible screen 4 and further controlling the shape of the waterdrop screen during the movement of the electronic device 2. This embodiment does not limit the material, shape, or structure of the first support member 70, as long as it can abut against the flexible screen 4. Furthermore, the first support member 70 can be positioned between the two connecting parts 22, reducing the overall thickness of the device. In addition, since the rotating shaft assembly 1 in this embodiment has a simple structure, the structure of the first support member 70 can also be simplified accordingly.

[0141] When the electronic device 2 is in the unfolded state, one of the first rotating members 20 has a protrusion 23 facing the side closest to the other first rotating member 20. This protrusion 23 can also be regarded as the connecting part 22 for rotating connection with the base 10 mentioned above, that is, the part of the connecting part 22 protruding from the assembly part 21 facing the other first rotating member 20. Optionally, the protrusion 23 and the first rotating member 20 are integral structures, and the protrusion 23 and the first rotating member 20 can be manufactured in one process. For ease of understanding, the protrusion 23 and the first rotating member 20 have been given different names.

[0142] Both protrusions 23 protrude towards the center, thus abutting against the first support member 70 to maintain its stability. The flexible screen 4 can then be placed stably on the first support member 70. Subsequently, as the electronic device 2 moves from the unfolded state to the closed state, the rotation of the housing 3 causes the first rotating member 20 to rotate relative to the base 10, causing the protrusions 23 to rotate as well. Furthermore, for the protrusion 23 in the middle position, as the housing 3 rotates, the protrusion 23 rotates in a direction away from the flexible screen 4, i.e., downwards. Therefore, when the protrusion 23 rotates downwards, the first support member 70 moves towards the base 10 due to its own weight or the presence of other components. When the protrusion 23 rotates at a certain angle, the first support member 70 abuts against the base 10, at which point the position of the first support member 70 is fixed. When the protrusion 23 continues to rotate, it is easy for the protrusion 23 to separate from the first support member 70, and from then on, the rotation of the protrusion 23 will no longer affect the positional relationship of the first support member 70.

[0143] From the perspective of the flexible screen 4, during the process of the electronic device 2 moving from the unfolded state to the closed state, both the housing 3 and the first rotating member 20 will rotate. Therefore, the housing 3 and the first rotating member 20 will compress the flexible screen 4, causing the lower end of the flexible screen 4 to bulge downwards due to its own weight and the compression, that is, to bulge towards the base 10. Therefore, when the first support member 70 abuts against the base 10, the first support member 70 can control the position of the lower end of the flexible screen 4 because the flexible screen 4 abuts against the first support member 70. So, by controlling the position of the first support member 70 abutting against 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 waterdrop screen is formed, there are two types of outward bending areas: one is the outward bending area between the housing 3 and the first rotating member 20, and the other is the inward bending area between the first rotating member 20 and the first supporting member 70. The flexible screen 4 in the outward bending area is subjected to tensile stress, while the flexible screen 4 in the inward bending area is subjected to compressive stress. Therefore, this application can adjust the shape and stress of the waterdrop screen by adjusting the positions of the housing 3, the first rotating member 20, and the first supporting member 70 when the electronic device 2 is in a closed state.

[0145] Optionally, the base 10 has a limiting groove on the side near the first support member 70. When the first support member 70 moves toward the base 10, at least a portion of the first support member 70 can be positioned within the limiting groove and abut against the groove wall. This embodiment can adjust the position of the first support member 70 against the base 10 by creating a limiting groove on the base 10, thereby adjusting the shape and force of the waterdrop screen.

[0146] Please refer to Figure 29 , Figure 29 As described in one embodiment of this application Figure 4 A partial cross-sectional view along the CC direction. In this embodiment, the electronic device 2 also includes a bracket 71 disposed on the side of the first support member 70 away from the flexible screen 4 and connected to the first support member 70, 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 in a deformed state, causing the third elastic member 72 to drive the first support member 70 to move toward the base 10 through a rebound force.

[0147] In addition to the first support member 70, a bracket 71 and a third elastic member 72 may be added. The support bracket is used to mount the third elastic member 72. The bracket 71 may be located on the side of the first support member 70 away from the flexible screen 4, that is, the bracket 71 may be located below the first support member 70. The positional relationship between the bracket 71 and the base 10 will be described in detail later in this application. The bracket 71 may also connect to the first support member 70, and the third elastic member 72 is located between the bracket 71 and the base 10. The third elastic member 72 may be a helical spring, a spiral 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 70 may be fixedly connected or detachably connected. When the bracket 71 and the first support member 70 are detachably connected, they may be connected by screws or snap-fit ​​connections.

[0148] As can be seen from the above, when the first rotating member 20 rotates, the protrusion 23 rotates in a direction away from the flexible screen 4, that is, downwards. Because the third elastic member 72 is in a deformed state when the protrusion rotates (the deformed state refers to the third elastic member 72 being in a compressed or stretched state), the deformed third elastic member 72 provides a rebound force to the bracket 71 and transmits it to the first support member 70. This causes the first support member 70 to move towards the base 10 under the influence of the rebound force, making it move downwards close to the protrusion 23 until it abuts against the base 10. Therefore, through the bracket 71 and the third elastic member 72, the first support member 70 can abut against the base 10 under the action of the rebound force, improving the stability of the first support member 70's movement.

[0149] Optionally, the third elastic element 72 is disposed between the bracket 71 and the first support member 70. When the protrusion 23 rotates, the third elastic element 72 is in a compressed state. In this case, when the protrusion 23 rotates, the third elastic element 72 pushes the bracket 71 downwards, causing the bracket 71 to move downwards, thereby driving the first support member 70 to move downwards. Alternatively, the third elastic element 72 is disposed on the side of the bracket 71 opposite to the first support member 70. When the protrusion 23 rotates, the third elastic element 72 is in a stretched state. In this case, when the protrusion 23 rotates, the third elastic element 72 pulls the bracket 71 downwards, causing the bracket 71 to move downwards, thereby driving the first support member 70 to move downwards. This embodiment is only illustrated with the third elastic element 72 disposed between the bracket 71 and the first support member 70.

[0150] Please refer to this again. Figure 29In this embodiment, the base 10 has a receiving space 12 on the side away from the rotation space 11. At least part of the bracket 71 and the third elastic member 72 are disposed 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 formed on the other side of the base 10 where the rotation space 11 is formed, that is, a receiving space 12 can be formed on the lower side of the base 10. In other words, a receiving space 12 is formed on the side of the base 10 away from the flexible screen 4. At least part 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, thereby reducing the overall thickness of the electronic device 2 and making the structure of the electronic device 2 more compact. This embodiment is only illustrated with the example of all the bracket 71 and the third elastic member 72 being 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 the third elastic member 72 still has a deformed state when the first support member 70 abuts against the base 10.

[0153] The pre-deformation state refers to the initial state of the third elastic member 72 before the protrusion 23 rotates, and the state of the third elastic member 72 when the first support layer abuts against the base 10. When the third elastic member 72 has not rotated, it already has a deformed state, allowing the first support member 70 to tightly abut against the protrusion 23, thus improving the stability of the first support member 70. As the first support member 70 moves towards the base 10, the deformation of the third elastic member 72 gradually releases. In this embodiment, even when the first support member 70 abuts against the base 10, the third elastic member 72 still has a deformed state, thereby ensuring that the first support member 70 tightly abuts against the base 10, further improving the stability of the first support member 70.

[0154] Please refer to this as well. Figure 26 and Figure 30 , Figure 30 This is an exploded view of the second support member and rotating shaft assembly in one embodiment of this 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 support portion 81 and a sliding portion 82 that are slidably connected. 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 unfolded 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 unfolded state, the sliding direction of the sliding portion 82 is parallel to the arrangement direction of the two first rotating members 20.

[0155] In addition to the first support member 70, the electronic device 2 may also include a second support member 80, which is connected to the first rotating member 20. Therefore, the rotation angle of the first rotating member 20 is the same as the rotation angle of the second support member 80. The fixing methods include, but are not limited to, fixed connections or detachable connections. When the second support member 80 is fixedly connected to the first rotating member 20, the second support member 80 and the first rotating member 20 are an integral structure, meaning they are manufactured through the same process. However, for ease of understanding, the second support member 80 and the first rotating member 20 are artificially given different names. When the second support member 80 is detachably connected to the first rotating member 20, the connection can be made using screws or clips.

[0156] The second support member 80 serves the same function as the first support member 70, both supporting the flexible screen 4. However, the second support member 80 differs from the first support member 70 in that the flexible screen 4 abuts against the first support member 70, while the flexible screen 4 is connected to the second support member 80. The second support member 80 includes a slidably connected support portion 81 and a sliding portion 82. The support portion 81 connects to the first rotating member 20, and the sliding portion 82 connects to the flexible screen 4. That is, the sliding portion 82 can slide on the support portion 81; in other words, the flexible screen 4 can slide on the support portion 81, and when the electronic device 2 is in the unfolded state, the sliding direction is parallel to the arrangement direction of the two first rotating members 20. Optionally, the flexible screen 4 can be bonded to the sliding portion 82 and the housing 3 using adhesive.

[0157] When the flexible screen 4 rotates, internal stress is generated due to the different layers in the flexible screen 4, which have different materials and structures. Therefore, by connecting the flexible screen 4 to the sliding part 82, when internal stress is generated, the internal stress causes the sliding part 82 to slide, relieving the stress caused by deformation of the flexible screen 4 and reducing stress-induced creases. This buffers the flexible screen 4, prevents damage, and improves its service life. Furthermore, this embodiment does not limit the shape, structure, or material of the supporting part 81 and the sliding part 82, as long as they achieve the functions of support and sliding.

[0158] Optionally, the support portion 81 is provided with a sliding groove, the sliding portion 82 is disposed in the sliding groove, and the surface of the sliding portion 82 near the flexible screen 4 is flush with the surface of the support portion 81 near the flexible screen 4, thereby improving the flatness of the second support member 80.

[0159] Optionally, the pivot assembly 1 and the second support member 80 are symmetrically distributed, so that the symmetrically distributed components can be shared, reducing design difficulty, reducing mass production costs, enabling modular production, high production efficiency, and facilitating the control of part reliability.

[0160] Optionally, since the structure of the rotatable shaft assembly 1 in this embodiment is simple, the structure of the second support member 80 can be simplified accordingly. Compared with the complex second support member 80 prepared by complex processes such as powder metallurgy in related technologies, the second support member 80 in this embodiment can be obtained only by stamping, thus reducing costs.

[0161] Please refer to Figure 31 , Figure 31 for Figure 30 A partial cross-sectional view along the DD direction is shown. In this embodiment, the support portion 81 has a through hole 810, and the sliding portion 82 includes a first part 821, a second part 822, and a third part 823. The first part 821 and the second part 822 are located on opposite sides of the support portion 81. The first part 821 is used to connect the flexible screen 4. The size of the second part 822 is larger than the size of the through hole 810. The third part 823 passes through the through hole 810 and connects the first part 821 and the second part 822. By making the size of the second part 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 between the sliding portion 82 and the support portion 81.

[0162] Please refer to the diagram as well. Figure 26 and Figure 32 , Figure 32 In yet another embodiment of this application Figure 4 A partial cross-sectional schematic diagram along the AA direction. In this embodiment, the electronic device 2 also includes a decorative component 90, which has a mounting space 91, and at least a portion of the rotating shaft assembly 1 is disposed within the mounting space 91; the electronic device 2 has an unfolded state in which the extension direction of the first rotating component 20 is parallel to the arrangement direction of the two first rotating components 20, and when the electronic device 2 is in the unfolded state, the two housings 3 surround and form an accommodating space 92, and the decorative component 90 is disposed within the accommodating space 92.

[0163] The decorative component 90 is mainly used to assemble the pivot assembly 1 onto the decorative component 90. For example, components such as the base 10 and the mounting component 68 can be fixed onto the decorative component 90 to provide an assembly base. Simultaneously, the decorative component 90 also allows at least a portion of the pivot assembly 1 to be housed within the mounting space 91, thereby protecting and shielding the pivot assembly 1, improving the safety and appearance of the electronic device 2. This embodiment does not limit the shape, structure, or material of the decorative component 90, as long as it serves the assembly function. Furthermore, when the electronic device 2 is in the unfolded state, the two housings 3 can enclose and form an accommodating space 92, with the mounting component housed within the accommodating space 92. This makes the decorative component 90 invisible from the outside when the electronic device 2 is in the unfolded state, further improving the appearance of the electronic device 2. The decorative component 90 is only exposed when the housings 3 rotate and separate.

[0164] The above provides a detailed description of the embodiments provided in this application. This document elucidates and explains the principles and implementation methods of this application. The above description is only intended to help understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A rotating shaft assembly, characterized in that, The invention relates to an electronic device comprising a flexible screen, two housings, and two second support members. The rotating shaft assembly includes a base and two first rotating members with opposite rotation directions. Each second support member is fixed to one of the first rotating members. Each first rotating member includes a first connecting end and a second connecting end disposed opposite to each other. The first connecting end is rotatably connected to the base, and the second connecting end is rotatably connected to the housing. The second support members and the housing together support the flexible screen. The rotating shaft assembly has a closed state where the distance between the two first connecting ends is greater than the distance between the two second connecting ends.

2. The rotating shaft assembly as described in claim 1, characterized in that, The housing rotates about a first rotation axis, and the first rotating component rotates about a 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.

3. The rotating shaft assembly as described in claim 2, characterized in that, When the rotating shaft assembly is in the closed state, in the direction perpendicular to the arrangement of the two second rotating axes, the second rotating axis is closer to the second connecting end than the first rotating axis.

4. The rotating shaft assembly as described in claim 1, characterized in that, The rotating shaft assembly also includes two second rotating members, one end of which is rotatably connected to the second connecting end, and the other end is used to connect to the housing.

5. The rotating shaft assembly as described in claim 4, characterized in that, The first rotating member has a mounting surface for assembling the flexible screen, and at least a portion of the second rotating member is disposed on a side close to a surface opposite to the mounting surface.

6. The rotating shaft assembly as claimed in claim 1, characterized in that, The base has a rotation space on one side. The first rotating component includes an assembly part and a connecting part on one side of the assembly part. The connecting part has a first connecting end and the assembly part has a second connecting end. The outer peripheral sidewall of the connecting part has a first rotating part, and the inner sidewall of the rotation space has a second rotating part. The first rotating part and the second rotating part cooperate to make the first rotating component rotatably connected to the base.

7. The rotating shaft assembly as described in claim 4, characterized in that, The rotating shaft assembly further includes two third rotating members. One end of each third rotating member is rotatably connected to the base, and the other end is slidably connected to the housing or the second rotating member, so that the third rotating member can be rotated under the rotation of the housing and also slide relative to the housing or the second rotating member.

8. The rotating shaft assembly as described in claim 7, characterized in that, The rotating shaft assembly also includes a synchronizing element, one end of which is rotatably connected to one of the third rotating elements, and the other end of which is rotatably connected to another of the third rotating elements.

9. The rotating shaft assembly as described in claim 8, characterized in that, The synchronizing element and the third rotating element are located on the same side of the base, and at least one of the synchronizing element and the third rotating element has a first mating part on the side opposite to the base. The rotating shaft assembly further includes: At least one first rotating shaft passes through the first mating part and the synchronizing member or the third rotating member provided with the first mating part, and the first rotating shaft is connected to the base; A sliding member is sleeved on the first rotating shaft and is located on the side of the first mating part away from the base. The sliding member has a second mating part on the side near the first mating part. A blocking member, fixed to the first rotating shaft and disposed on the side of the sliding member opposite to the base; and A first elastic element is sleeved on the first rotating shaft and disposed between the blocking element and the sliding element; The third rotating member is used to rotate synchronously with the rotation of the housing, thereby driving the first mating part to rotate. The first mating part and the second mating part cooperate with each other to make the sliding member slide towards or away from the third rotating member. When the sliding member slides away from the third rotating member, the first elastic member is in a compressed state, causing the second mating part to abut against the first mating part. So that when the third rotating member stops rotating, the third rotating member is in a stable state.

10. The rotating shaft assembly as claimed in claim 9, characterized in that, The first mating part includes a plurality of first protrusions spaced apart, and the second mating part includes a plurality of second protrusions spaced apart, wherein both the first protrusions and the second protrusions have wavy peaks; When the slider slides 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 the second mating part abuts against the first mating part.

11. The rotating shaft assembly as claimed in claim 9, characterized in that, The first elastic element is disposed between the sliding element and the blocking element in a pre-compressed state.

12. The rotating shaft assembly as claimed in claim 9, characterized in that, The rotating shaft assembly further includes a second rotating shaft and a second elastic member. The second rotating shaft passes through at least one of the remaining synchronizing member and the third rotating member, and is connected to the base. The sliding member is sleeved on the second rotating shaft, the blocking member is fixed to the second rotating shaft, and the second elastic member is sleeved on the second rotating shaft and disposed between the blocking member and the sliding member. When the slider slides away from the third rotating member, the second elastic member is compressed, causing the second mating part to abut against the first mating part.

13. The rotating shaft assembly as claimed in claim 9, characterized in that, The rotating shaft assembly also includes a friction element, which is disposed on the side of the blocking element opposite to the base; At least a portion of the outer periphery of the first rotating shaft is provided with a flat structure. The friction member and the synchronization member or the third rotating member provided with the first mating part are all sleeved on the flat structure, so that the rotation of the first mating part can drive the first rotating shaft and the friction member to rotate.

14. The rotating shaft assembly as claimed in claim 13, characterized in that, The rotating shaft assembly further includes a mounting member, which is fixed to the first rotating shaft and disposed on the side of the blocking member away from the base; the rotating shaft assembly includes two friction members, one friction member is disposed between the blocking member and the mounting member, and the other friction member is disposed on the side of the mounting member away from the blocking member.

15. The rotating shaft assembly as claimed in claim 9, characterized in that, The first rotating shaft has a snap-fit ​​groove on the periphery of the end of the blocking member away from the base, and the rotating shaft assembly also includes a snap-fit ​​member, part of which is disposed in the snap-fit ​​groove.

16. An electronic device, characterized in that, The device includes a flexible screen, two housings, and a pivot assembly as described in any one of claims 1-15, wherein at least portions of the two housings are respectively disposed on opposite sides of the pivot assembly, and the housings are rotatably connected to the first rotating member in the pivot assembly, and the flexible screen is disposed on one side of the two first rotating members and the two housings.

17. The electronic device as claimed in claim 16, characterized in that, The electronic device further includes a first support member disposed between the two first rotating members for abutting the flexible screen. The electronic device has an unfolded state in which the extension direction of the first rotating members is parallel to the arrangement direction of the two first rotating members. When the electronic device is in the unfolded state, one of the first rotating members has a protrusion on the side facing closer to the other first rotating member, and the first support member abuts the protrusion. The protrusion can rotate to move the first support member toward the base, and the first support member separates from the protrusion after it comes into contact with the base.

18. The electronic device as claimed in claim 17, characterized in that, The electronic device further includes a bracket disposed on the side of the first support member away from the flexible screen and connected to the first support member, and a third elastic member disposed between the bracket and the base; When the protrusion rotates, the third elastic element is in a deformed state, causing the third elastic element to drive the first support element to move toward the base through the rebound force.

19. The electronic device as claimed in claim 18, characterized in that, The base has a receiving space on the side away from the rotation space, at least part of the bracket and the third elastic member are disposed in the receiving space, and the third elastic member is installed on the inner wall of the receiving space.

20. The electronic device as claimed in claim 18, characterized in that, The third elastic element is disposed between the bracket and the base in a pre-deformed state, and the third elastic element still has the deformed state when the first support abuts against the base.

21. The electronic device as claimed in claim 16, characterized in that, The electronic device further includes a second support member, which includes a support portion and a sliding portion that are slidably connected. The support portion is connected to the first rotating member, and the sliding portion is used to connect to the flexible screen. The electronic device has an unfolded 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 unfolded state, the sliding direction of the sliding portion is parallel to the arrangement direction of the two first rotating members.

22. The electronic device as claimed in claim 21, characterized in that, The supporting portion has a through hole, and the sliding portion includes a first part, a second part, and a third part. The first part and the second part are located on opposite sides of the supporting portion. 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 and connects the first part and the second part.

23. The electronic device as claimed in claim 16, characterized in that, The electronic device further includes a decorative component, which has an installation space, and at least a portion of the rotating shaft assembly is disposed within the installation space; the electronic device has an unfolded state in which the extension direction of the first rotating component is parallel to the arrangement direction of the two first rotating components, and when the electronic device is in the unfolded state, the two housings enclose and form an accommodating space, and the decorative component is disposed within the accommodating space.

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