Hinge mechanism and display terminal

Abstract

Embodiments of the present application relate to the technical field of foldable display, and provide a hinge mechanism and a display terminal, used for alleviating the problem that the display terminal cannot stably maintain a folding angle in an intermediate state. In the hinge mechanism, a first damping structure abuts against a first synchronization assembly, and a second damping structure abuts against a first cam structure. The first synchronization assembly comprises a first cam surface, and the first cam structure comprises a second cam surface. In an unfolded state and a closed state, a gap is formed between the first cam structure and a first protrusion of the first cam surface, thereby releasing a damping force provided by the second damping structure to the first synchronization assembly. In at least one preset intermediate state, a second protrusion of the second cam surface abuts against the first protrusion of the first cam surface. In this case, both the first damping structure and the second damping structure can provide a large damping force to the first synchronization assembly, so that the hinge mechanism can stably maintain the preset intermediate state.

Description

A rotating shaft mechanism and a display terminal

[0001] This application claims priority to Chinese Patent Application No. 202510072685.9, filed with the State Intellectual Property Office of China on January 16, 2025, entitled "A Rotating Shaft Mechanism and a Display Terminal", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of foldable display technology, and in particular to a hinge mechanism and a display terminal. Background Technology

[0003] With the continuous development of communication technology, foldable display terminals are gradually becoming a development trend for future mobile electronic products. When unfolded, foldable display terminals offer a larger display area, enhancing the viewing experience. When folded, they achieve a smaller size, making them easy for users to carry. However, the folding feel remains unchanged during the folding process, thus reducing the user experience. Summary of the Invention

[0004] This application provides a hinge mechanism and a display terminal to alleviate the problem that the folding feel remains unchanged during the folding process of the display terminal.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In one aspect, this application provides a pivot mechanism having a flattened state, a closed state, and at least one preset intermediate state between the flattened and closed states. When the pivot mechanism is in the flattened, closed, and preset intermediate states, a display terminal having the pivot mechanism can also be in the flattened, closed, and preset intermediate states, respectively. Furthermore, the pivot mechanism may include: a main shaft, a first synchronization component, a first damping structure, a first cam structure, and a second damping structure. The main shaft may extend along a first direction. The first synchronization component may include a first rotating arm and a second rotating arm that are connected in a transmission manner. The first rotating arm and the second rotating arm are rotatably connected to the main shaft. The first synchronization component has a first cam surface with at least one first protrusion. The first damping structure is disposed on one side of the first synchronization component along the first direction. The first damping structure abuts against the first synchronization component. The first cam structure is located on the side of the first synchronization component opposite to the first damping structure along the first direction. The first cam structure has a second cam surface with at least one second protrusion. In the flattened and closed states, there is a gap between the first cam structure and the first protrusion. In at least one preset intermediate state, the second protrusion abuts against the first protrusion. The second damping structure, along the first direction, is disposed on the side of the first cam structure opposite to the first synchronization component, and the second damping structure abuts against the first cam structure.

[0007] In summary, the rotating mechanism provided in this application embodiment, through the transmission connection of the first rotating arm and the second rotating arm in the first synchronization component, allows the rotation angles of both sides of the display terminal to be the same or approximately the same during folding. Furthermore, along the extension direction of the main shaft, i.e., the aforementioned first direction, a first damping structure disposed on one side of the first synchronization component abuts against the first synchronization component, enabling the first damping structure to provide damping force to the first synchronization component, thereby making the rotation of the first rotating arm and the second rotating arm smoother. As described above, the surface of the first synchronization component facing the first cam structure is the first cam surface, and the surface of the first cam structure facing the first synchronization component is the second cam surface. In the flattened and closed states of the rotating mechanism and the display terminal, the first cam structure can have a gap with the first protrusion in the first cam surface, so that the first cam structure and the first synchronization component are in a "separated" state. At this time, the damping force (e.g., torque) provided by the second damping structure to the first synchronization component can be removed, facilitating rapid flattening, rapid closing, or self-opening of the display terminal. Alternatively, in at least one preset intermediate state, the second protrusion of the first cam structure can abut against the first protrusion, so that the first cam structure and the first synchronization component are in a "meeting" state. At this time, both the first damping structure and the second damping structure can provide a large damping force (e.g., torque) to the first synchronization component, so that the rotating shaft mechanism can stably maintain the above-mentioned preset intermediate state. In this case, during the folding process of the rotating shaft mechanism, the first cam structure and the first synchronization component can switch from the above-mentioned "separation" state to the "meeting" state, or switch from the "meeting" state to the "separation" state, thereby realizing the "disengagement" switching between the first cam structure and the first synchronization component.

[0008] As described above, the damping force (e.g., torque) of the display terminal when the first cam structure and the first synchronization component are in a "separated" state is different from the damping force (e.g., torque) of the display terminal when the first cam structure and the first synchronization component are in a "joined" state. In this way, the damping force (e.g., torque) of the display terminal can be switched between different folding states while the "disengagement" between the first cam structure and the first synchronization component is being switched, thereby changing the folding feel of the display terminal during the folding process and improving the user experience.

[0009] In one optional embodiment, the rotating shaft mechanism further includes a first connecting shaft and a first shoulder structure. Along a first direction, the first connecting shaft passes through a first rotating arm, which is rotatably connected to the first connecting shaft, thereby allowing the first rotating arm to be rotatably connected to the main shaft via the first connecting shaft. The first shoulder structure is located at the end of the first connecting shaft facing the first cam structure and is connected to the first connecting shaft, situated within the first rotating arm. Specifically, in both the flattened and closed states, the surface of the first shoulder structure facing away from the first cam structure abuts against the first rotating arm. This prevents the first rotating arm from moving closer to the first cam structure during rotation, thus creating a gap between the first protrusion on the first rotating arm and the first cam structure, thereby canceling the damping force provided by the second damping structure to the first synchronization assembly where the first rotating arm is located. In at least one preset intermediate state, a gap exists between the surface of the first shoulder structure facing away from the first cam structure and the first rotating arm. In this way, during the rotation of the first rotating arm, the first protrusion on the first rotating arm can abut against the second protrusion on the first cam structure, thereby transmitting the damping force provided by the second damping structure to the first synchronization component where the first rotating arm is located.

[0010] In one optional embodiment, a first stepped hole penetrating the first rotating arm is provided along a first direction. The first stepped hole includes a first through hole and a second through hole that are connected, with the first through hole closer to the first cam structure than the second through hole. The diameter of the first through hole is larger than the diameter of the second through hole. A first annular interface is formed between the first through hole and the second through hole. A first shoulder structure is disposed around a first connecting shaft and is located within the first through hole. The first connecting shaft rotatably engages with the second through hole, thereby allowing the first rotating arm to rotate around the first connecting shaft. Furthermore, in the flattened and closed states, the surface of the first shoulder structure facing away from the first cam structure abuts against the first annular interface, thereby allowing the surface of the first shoulder structure facing away from the first cam structure to abut against the first rotating arm. In at least one preset intermediate state, there is a gap between the surface of the first shoulder structure facing away from the first cam structure and the first annular interface, thereby allowing a gap between the surface of the first shoulder structure facing away from the first cam structure and the first rotating arm.

[0011] In one optional embodiment, the first connecting shaft passes through the first damping structure, the first cam structure, and the second damping structure. This allows the first damping structure, the first cam structure, and the second damping structure to be coaxially arranged, simplifying the structure of the rotating shaft mechanism.

[0012] In one optional embodiment, the rotating shaft mechanism further includes a second connecting shaft and a second shoulder structure. Along a first direction, the second connecting shaft passes through the second rotating arm, and the second rotating arm is rotatably connected to the second connecting shaft, thereby allowing the second rotating arm to be rotatably connected to the main shaft via the second connecting shaft. Furthermore, the second shoulder structure is located at the end of the second connecting shaft facing the first cam structure, and is connected to the second connecting shaft, situated within the second rotating arm. In both the flattened and closed states, the surface of the second shoulder structure facing away from the first cam structure abuts against the second rotating arm. Similarly, this allows a gap between the first protrusion on the second rotating arm and the first cam structure, thereby removing the damping force provided by the second damping structure to the first synchronization component. In at least one preset intermediate state, a gap exists between the surface of the second shoulder structure facing away from the first cam structure and the second rotating arm. Similarly, the first protrusion on the second rotating arm abuts against the second protrusion on the first cam structure, thereby transmitting the damping force provided by the second damping structure to the first synchronization component.

[0013] In one optional embodiment, the first synchronization component further includes a first gear and a second gear. The first gear is disposed between the first rotating arm and the second rotating arm, and is driveably connected to the first rotating arm. The second gear is disposed between the first gear and the second rotating arm, and is driveably connected to both the first gear and the second rotating arm. The first rotating arm in the first synchronization component can be driveably connected to the second rotating arm via the aforementioned first gear and second gear. Furthermore, the rotating shaft mechanism includes a third connection and a third shoulder structure. Along a first direction, the third connection shaft passes through the first gear, and the first gear is rotatably connected to the third connection shaft, thus eliminating the need for a separate component for mounting the first gear. The third shoulder structure is located at the end of the third connection shaft facing the first cam structure and is connected to the third connection shaft; the third shoulder structure is located inside the first gear. In both the flattened and closed states, the surface of the third shoulder structure facing away from the first cam structure abuts against the first gear. Similarly, this allows for a gap between the first protrusion on the first gear and the first cam structure, thereby removing the damping force provided by the second damping structure to the first synchronization component. In at least one preset intermediate state, there is a gap between the surface of the third shoulder structure facing away from the first cam structure and the first gear. Similarly, the first protrusion on the first gear can be made to abut against the second protrusion on the first cam structure, thereby transmitting the damping force provided by the second damping structure to the first synchronization component.

[0014] In one optional embodiment, the rotating shaft mechanism further includes a fourth connecting shaft and a fourth shoulder structure. Along a first direction, the fourth connecting shaft passes through the second gear, and the second gear is rotatably connected to the fourth connecting shaft, thus eliminating the need for a separate component for mounting the second gear. The fourth shoulder structure is located at the end of the fourth connecting shaft facing the first cam structure and is connected to the fourth connecting shaft; the fourth shoulder structure is located within the second gear. In both the flattened and closed states, the surface of the fourth shoulder structure facing away from the first cam structure abuts against the second gear. Similarly, this allows a gap between the first protrusion on the second gear and the first cam structure, thereby removing the damping force provided by the second damping structure to the first synchronization component. In at least one preset intermediate state, a gap exists between the surface of the fourth shoulder structure facing away from the first cam structure and the second gear. Similarly, the first protrusion on the second gear abuts against the second protrusion on the first cam structure, thereby transmitting the damping force provided by the second damping structure to the first synchronization component.

[0015] In one optional embodiment, the first cam surface includes a first end face, a second end face, a third end face, and a fourth end face. The surface of the first rotating arm facing the first cam structure is the first end face, and the first end face has at least one first protrusion. The surface of the second rotating arm facing the first cam structure is the second end face, and the second end face also has at least one first protrusion. The surface of the first gear facing the first cam structure is the third end face, and the third end face also has at least one first protrusion. The surface of the second gear facing the first cam structure is the fourth end face, and the fourth end face also has at least one first protrusion. In this way, the first rotating arm, the second rotating arm, the first gear, and the second gear in the first synchronization assembly can all have the aforementioned first protrusions, thereby allowing the damping force from the first damping structure and the second damping structure to be uniformly applied to the first synchronization assembly.

[0016] In one optional embodiment, the second cam surface includes a fifth end face, a sixth end face, a seventh end face, and an eighth end face. The first cam structure includes a first part, a second part, a third part, and a fourth part. The surface of the first part facing the first synchronization component is the fifth end face, which has at least one second protrusion. The vertical projection of the fifth end face onto the first cam surface coincides with the first end face. The surface of the second part facing the first synchronization component is the sixth end face, which also has at least one second protrusion. The vertical projection of the sixth end face onto the first cam surface coincides with the second end face. The surface of the third part facing the first synchronization component is the seventh end face, which has at least one second protrusion. The vertical projection of the seventh end face onto the first cam surface coincides with the third end face. The surface of the fourth part facing the first synchronization component is the eighth end face, which has at least one second protrusion. The vertical projection of the eighth end face onto the first cam surface coincides with the fourth end face. In this way, with the first protrusion on the first, second, third, and fourth end faces, the portions of the second cam surface of the first cam structure that overlap with the positions of the first, second, third, and fourth end faces (i.e., the aforementioned fifth, sixth, seventh, and eighth end faces) can all have the aforementioned second protrusion. In this case, the overlapping portions of the first cam structure and the first synchronization component can cooperate with each other through the aforementioned first and second protrusions, allowing the torque from the second damping structure to be stably transmitted to the first synchronization component, or stably withdrawn from the first synchronization component.

[0017] In one optional embodiment, the first part, the third part, the fourth part, and the second part are sequentially connected to form an integral structural component. This allows the first part, the second part, the third part, and the fourth part to be integrally formed in a single processing step, simplifying the manufacturing process.

[0018] In one optional embodiment, the first, third, fourth, and second portions are arranged sequentially along a second direction. Any two adjacent portions of the first, third, fourth, and second portions are spaced apart. The second direction is perpendicular to the first direction. In this way, the first, third, fourth, and second portions are arranged independently of each other, facilitating maintenance and replacement and reducing maintenance costs.

[0019] In one optional embodiment, the first, third, fourth, and second portions are arranged sequentially along the second direction; two or three adjacent portions of the first, third, fourth, and second portions are connected to form a single structural component. The second direction is perpendicular to the first direction. This simplifies the manufacturing process of the integrally connected components and makes the replacement and maintenance of individual parts more convenient.

[0020] In one optional embodiment, the first rotating arm includes a first rotating portion and a first extended portion connected together. The first rotating portion is rotatably connected to the main shaft, and the first extended portion is located on the side of the first rotating portion opposite to the main shaft. The second rotating arm includes a second rotating portion and a second extended portion connected together. The second rotating portion is rotatably connected to the main shaft and is drively connected to the first rotating portion. The second extended portion is located on the side of the second rotating portion opposite to the main shaft. Furthermore, the second damping structure includes at least one set of friction structures, which includes a first moving friction plate, a second moving friction plate, and a stationary friction plate. The first moving friction plate is connected to the first extended portion and rotatably connected to the main shaft. The second moving friction plate is connected to the second extended portion and rotatably connected to the main shaft. The stationary friction plate is connected to the main shaft and is stacked with and abuts against the first and second moving friction plates. Thus, when the first rotating arm rotates relative to the main shaft, and the first extended portion moves relative to the first fixed frame, it can drive the first moving friction plate to rotate around the first connecting shaft. When the second rotating arm rotates relative to the main shaft and the second extension moves relative to the second fixed frame, it can drive the second moving friction plate to rotate around the second connecting shaft. Furthermore, when the first and second moving friction plates rotate relative to the main shaft, they can rub against the stationary friction plate, generating a frictional torque. In this situation, when the second protrusion of the second cam structure abuts against the first protrusion of the first synchronization assembly, the second damping structure can transmit the aforementioned frictional torque to the first synchronization assembly through the first cam structure.

[0021] In one optional embodiment, the first synchronization component further includes a third cam surface with at least one third protrusion. Additionally, the first damping structure includes a second cam structure and an elastic structure. The second cam structure has a fourth cam surface with at least one fourth protrusion, which abuts against the third protrusion. Along a first direction, the elastic structure is disposed on the side of the second cam structure opposite to the first synchronization component, and the elastic structure is connected to or abuts against the second cam structure, and is in a compressed state. The elastic structure can apply a positive pressure to the second cam structure, which can be converted into torque by the second cam structure and act on the first synchronization component.

[0022] In one optional embodiment, the rotating shaft mechanism further includes a second synchronization component, which includes a third rotating arm and a fourth rotating arm that are drive-connected and rotatably connected to the main shaft. Along a first direction, the second synchronization component is disposed on the side of the first damping structure opposite to the first synchronization component. The second synchronization component has a fifth cam surface with at least one fifth protrusion. Furthermore, the first damping structure includes a third cam structure with a sixth cam surface. The sixth cam surface has at least one sixth protrusion that abuts against the fifth protrusion. An end of an elastic structure opposite to the second cam structure is connected to or abuts against the third cam structure. The elastic structure can provide a positive pressure to the third cam structure, allowing the third cam structure to abut against the second synchronization component. This positive pressure can be converted into torque by the third cam structure and act on the first synchronization component.

[0023] Another aspect of this application provides a display terminal, including a display screen, a first housing, a second housing, and any of the hinge mechanisms described above. The hinge mechanism is located between the first housing and the second housing, and the display screen is connected to both the first and second housings, covering the hinge mechanism. The above-described display terminal has the same technical effects as the hinge mechanism provided in the foregoing embodiments, and will not be repeated here. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the structure of a display terminal provided in an embodiment of this application;

[0025] Figure 2 is an exploded structural diagram of the display terminal shown in Figure 1;

[0026] Figure 3 is a schematic diagram of a folded state of the display terminal shown in Figure 1;

[0027] Figure 4 is a schematic diagram of another folded state of the display terminal shown in Figure 1;

[0028] Figure 5 is a schematic diagram of another display terminal provided in an embodiment of this application;

[0029] Figure 6 is a schematic diagram of another display terminal provided in an embodiment of this application;

[0030] Figure 7 is a schematic diagram of a rotating mechanism of a display terminal provided in an embodiment of this application;

[0031] Figure 8 is an exploded structural diagram of the rotating shaft mechanism shown in Figure 7;

[0032] Figure 9 is an exploded view of another structure of the rotating shaft mechanism shown in Figure 7;

[0033] Figure 10 is a schematic diagram obtained along direction A1 in Figure 9;

[0034] Figure 11 is a schematic diagram of a first synchronization component provided in an embodiment of this application;

[0035] Figure 12 is a schematic diagram of a rotating shaft mechanism provided in an embodiment of this application;

[0036] Figure 13 is another schematic diagram of the first synchronization component provided in an embodiment of this application;

[0037] Figure 14 is another schematic diagram of the rotating shaft mechanism provided in the embodiment of this application;

[0038] Figure 15 is another schematic diagram of the rotating shaft mechanism provided in the embodiment of this application;

[0039] Figure 16 is a schematic diagram obtained along direction A2 in Figure 15;

[0040] Figure 17 is a schematic diagram obtained along direction A3 in Figure 15;

[0041] Figure 18 is another schematic diagram obtained along direction A3 in Figure 15;

[0042] Figure 19 is a schematic diagram obtained along direction A4 in Figure 17;

[0043] Figure 20 is an enlarged view of section B1 in Figure 15;

[0044] Figure 21 is another schematic diagram of the rotating shaft mechanism provided in the embodiment of this application;

[0045] Figure 22 is an enlarged view of position B2 in Figure 21;

[0046] Figure 23 is another schematic diagram of the rotating shaft mechanism provided in the embodiment of this application;

[0047] Figure 24 is a schematic diagram obtained along direction A5 in Figure 23;

[0048] Figure 25A is a schematic diagram obtained along direction A6 in Figure 24;

[0049] Figure 25B is a schematic diagram of a first cam structure provided in an embodiment of this application;

[0050] Figure 25C is another schematic diagram of the first cam structure provided in the embodiment of this application;

[0051] Figure 26 is another schematic diagram of the rotating shaft mechanism provided in the embodiment of this application;

[0052] Figure 27 is a schematic diagram of a working state of the rotating shaft mechanism provided in an embodiment of this application;

[0053] Figure 28A is another schematic diagram of the rotating shaft mechanism provided in the embodiment of this application;

[0054] Figure 28B is a partial exploded view of the second damping structure in Figure 28A;

[0055] Figure 29 is another schematic diagram of the rotating shaft mechanism provided in the embodiment of this application;

[0056] Figure 30 is a schematic diagram of another working state of the rotating shaft mechanism provided in the embodiment of this application;

[0057] Figure 31 is another schematic diagram of the rotating shaft mechanism provided in the embodiment of this application;

[0058] Figure 32 is another schematic diagram of the rotating shaft mechanism provided in the embodiment of this application;

[0059] Figure 33 is a schematic diagram of a first rotating arm provided in an embodiment of this application;

[0060] Figure 34 is a schematic diagram of the installation of the first rotating arm and the first connecting shaft provided in an embodiment of this application;

[0061] Figure 35 is a schematic diagram obtained by cutting along the dashed line C1-C2 in Figure 32;

[0062] Figure 36 shows another schematic diagram obtained by cutting along the dashed line C1-C2 in Figure 32.

[0063] Reference numerals: 01-Display terminal; 10-Display screen; 11-First housing; 12-Second housing; 13-Third housing; 20-Rotating shaft mechanism; 201-Main shaft; 202-First synchronization component; 203-First damping structure; 204-First cam structure; 205-Second damping structure; 2011-Shaft seat; 2021-First rotating arm; 2022-Second rotating arm; 20211-First rotating part; 20212-First extension part; 20221-Second rotating part; 20222-Second extension part; 2023-First gear; 2024-Second gear; 31-First connecting shaft; 32-Second connecting shaft; 211-First fixing frame; 212-Second fixing frame; 3 3-Third connecting shaft; 34-Fourth connecting shaft; 2031-Second cam structure; 2032-Elastic structure; T3-Third cam surface; S9-Ninth end face; S10-Tenth end face; S11-Eleventh end face; S12-Twelfth end face; 43-Third protrusion; T4-Fourth cam surface; 44-Fourth protrusion; 20311-First substructure; 20312-Second substructure; P1-Top surface; P12-First oblique side surface; P22-Second oblique side surface; 2033-Third cam structure; 206-Second Synchronization component; 2061-Third rotating arm; 2062-Fourth rotating arm; 2063-Third gear; 2064-Fourth gear; T5-Fifth cam surface; 45-Fifth protrusion; T6-Sixth cam surface; 46-Sixth protrusion; 207-Rotating arm assembly; T1-First cam surface; 41-First protrusion; S1-First end face; S2-Second end face; S3-Third end face; S4-Fourth end face; T2-Second cam surface; 42-Second protrusion; S5-Fifth end face; S6-Sixth end face; S7-Third... Seventh end face; S8 - Eighth end face; 2041 - First part; 2042 - Second part; 2043 - Third part; 2044 - Fourth part; 215 - Friction structure; 2151 - First moving friction plate; 2152 - Second moving friction plate; 2153 - Static friction plate; 311 - First shoulder structure; 321 - Second shoulder structure; 331 - Third shoulder structure; 341 - Fourth shoulder structure; 50 - First stepped hole; 501 - First through hole; 502 - Second through hole; 500 - First annular interface. Detailed Implementation

[0064] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0065] In the following description, the terms "first," "second," etc., are used for descriptive convenience only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0066] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed mechanical connection, a detachable mechanical connection, or an integral part; or, "connection" may be a direct connection or an indirect connection through an intermediate medium.

[0067] In this application embodiment, the descriptions of "vertical" and "parallel" indicate approximate verticality and parallelism within a certain allowable error range. This error range can be a range where the angle of deviation from absolute verticality is less than or equal to 5°, 8°, or 10°, respectively, and is not specifically limited here. In this application embodiment, directional terms such as "left," "right," "up," and "down" can be defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms can be relative concepts, used for relative description and clarification, and can change accordingly based on changes in the orientation of the components in the accompanying drawings.

[0068] In the accompanying drawings of the embodiments of this application, components are indicated by arrowed guide lines; parts are indicated by guide lines only.

[0069] This application provides a display terminal that can be applied to various communication systems or protocols, such as Bluetooth (BT) communication technology, Global Positioning System (GPS) communication technology, Global System for Mobile Communication (GSM) communication technology, Wireless Fidelity (WiFi) communication technology, Wideband Code Division Multiple Access (WCDMA) communication technology, Long Term Evolution (LTE), 5G communication technology, and other future communication technologies.

[0070] The display terminal in this application embodiment can be a mobile phone, tablet computer, laptop computer, smart home device, smart wearable device (e.g., smartwatch, smart bracelet, smart glasses, smart helmet), virtual reality (VR) display terminal, augmented reality (AR) display terminal, etc. The display terminal can also be a handheld device with wireless communication capabilities, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a display terminal in a 5G network, or a display terminal in a future evolved public land mobile network (PLMN), etc., and this application embodiment is not limited to these categories.

[0071] In some embodiments, the display terminal may have a display function. In this case, the display terminal may include a display screen and a processor electrically connected to the display screen. The processor may provide display data to the display screen to drive the display screen to display images. For example, the processor may include one or more processing units, such as an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processing unit (NPU). Different processing units may be independent devices or integrated into one or more processors.

[0072] For ease of explanation, the following description uses a foldable phone as an example of the display terminal. In this case, as shown in FIG1, the display terminal 01 may include a display screen 10. In some embodiments of this application, the display screen 10 may be a self-emissive display screen, such as an organic light-emitting diode (OLED) display screen, a micro (or mini) light-emitting diode (LED) display screen, or a quantum dot light-emitting diode (QLED) display screen, etc. Alternatively, in other embodiments of this application, the display screen 10 may also be a liquid crystal display (LCD) that requires a backlight.

[0073] Furthermore, in order to support the display screen 10 during the folding or flattening process of the display terminal 01, in some embodiments, the display terminal 01 may also include two housings. For example, the two housings may be a first housing 11 and a second housing 12, and a pivot mechanism 20 disposed on the back of the display screen 10 (the surface opposite to the display surface of the display screen 10), as shown in FIG. 2. For example, either the first housing 11 or the second housing 12 may include a middle frame and a rear housing located on the side of the middle frame away from the display screen 10. The middle frame and the rear housing may enclose a receiving space for accommodating components such as circuit boards, batteries, cameras, and sensors.

[0074] Continuing as shown in Figure 2, the pivot mechanism 20 is located between the first housing 11 and the second housing 12, and the first housing 11 and the second housing 12 can be rotatably connected to the pivot mechanism 20, so that the first housing 11 and the second housing 12 can rotate around the pivot mechanism 20 respectively. The display screen 10 shown in Figure 1 is connected to the first housing 11 and the second housing 12, and the display screen 10 can cover the pivot mechanism 20. The pivot mechanism 20 can have a flattened state, a closed state, and an intermediate state between the flattened state and the closed state.

[0075] For example, when the hinge mechanism 20 is in a flattened state, the display terminal 01 can be in the flattened state shown in Figure 1. At this time, the included angle β between the first housing 11 and the second housing 12 can be or approximately 180°. Alternatively, where a certain angular tolerance is allowed, for example, the included angle β between the first housing 11 and the second housing 12 can be 165°, 177°, or 185°. At this time, the surfaces of the first housing 11 and the second housing 12 facing the display screen 10 can be on or approximately on the same plane. For ease of explanation, the following example uses the hinge mechanism 20 and the display terminal 01 in a fully flattened state, with the included angle β between the first housing 11 and the second housing 12 being 180°.

[0076] Alternatively, when the display terminal 01 is initially in the flattened state as shown in Figure 1, the user can hold the display terminal 01 and apply external force to the first housing 11 and the second housing 12 to fold the first housing 11 and the second housing 12, causing the first housing 11 and the second housing 12 to rotate relative to the pivot mechanism 20, thereby folding the display screen 10, and finally causing the pivot mechanism 20 to be in the closed state. At this time, the display terminal 01 is in the closed state as shown in Figure 3.

[0077] For example, in some embodiments of this application, the folded state of the display terminal 01 can refer to an angle β between the first housing 11 and the second housing 12 being less than 180°. As shown in Figure 3, the angle β between the first housing 11 and the second housing 12 can be 0°, and in this case, the folded state of the display terminal 01 can also be called the closed state. Alternatively, the closed state can also be a value such as 2° or 5° between the first housing 11 and the second housing 12. For ease of explanation, the following example is given when the rotating mechanism 20 and the display terminal 01 are in the fully closed state, and the angle β between the first housing 11 and the second housing 12 is 0°.

[0078] Alternatively, as an example, in some embodiments of this application, when the hinge mechanism 20 is in an intermediate state, the display terminal 01 can be in the intermediate state shown in FIG. 4. At this time, the included angle β between the first housing 11 and the second housing 12 can be within the range of 0° to 180°. Each included angle β within the range of 0° to 180° can correspond to an intermediate state of the display terminal 01 (and the hinge mechanism 20). Based on this, at least one intermediate state can be selected as a preset intermediate state from the above multiple intermediate states as needed. When the display terminal 01 (and the hinge mechanism 20) is in the above preset intermediate state, the included angle β can satisfy the range of 100° < β < 140°. For example, the included angle β corresponding to the above preset intermediate state can be 100°, 110°, 120°, 130°, or 140°, etc. This application does not limit the specific value of the included angle β between the first housing 11 and the second housing 12 when the hinge mechanism 20 and the display terminal 01 are in the above preset intermediate state; the above is merely an example illustration of the included angle β corresponding to the preset intermediate state.

[0079] To illustrate the positional relationships of the various components in the display terminal 01, an XYZ coordinate system is established in the accompanying drawings. For example, the XY plane can be parallel to the display surface (the surface used to display images) of the display screen 10 when the display terminal 01 is in a flattened state as shown in Figure 1. The Z direction is the stacking direction between the first housing 11 (or the second housing 12) and the display screen 10; that is, the Z direction can be the thickness of the display terminal 01 or the thickness direction of the aforementioned housing. The Y direction can be the extension direction of the rotating shaft mechanism 20, and the X direction can be perpendicular to the extension direction of the rotating shaft mechanism 20. For ease of explanation, the Y direction will be referred to as the first direction Y, and the X direction as the second direction X.

[0080] As shown in Figure 3, in some embodiments of this application, when the display terminal 01 is in a folded state, the display screen 10 can be nestled between the first housing 11 and the second housing 12. This display terminal 01 can be referred to as an inward-folding display terminal. In this case, for example, when the aforementioned hinge mechanism 20 and the display terminal 01 are in the aforementioned preset intermediate state, the display screen 10 of the display terminal 01 can display user images captured by a camera, allowing the display terminal 01 to be used as a mirror.

[0081] Alternatively, in some other embodiments of this application, when the display terminal 01 is in a folded state, the first housing 11 and the second housing 12 can be enclosed within the display screen 10. This display terminal 01 can be referred to as an outward-folding display terminal. In this case, for example, when the aforementioned hinge mechanism 20 and the display terminal 01 are in the aforementioned preset intermediate state, the portions of the display screen 10 located on the outside that cover the first housing 11 and the second housing 12 can be used to display to different users, thereby enabling two or more users located in different positions to share the screen.

[0082] Alternatively, in some other embodiments of this application, the display terminal 01 may further include three or more housings. For example, as shown in FIG5, when the display terminal 01 includes three housings, such as a first housing 11, a second housing 12, and a third housing 13, the first housing 11, the second housing 12, and the third housing 13 can be folded into a "G" shape. Alternatively, as shown in FIG6, when the first housing 11, the second housing 12, and the third housing 13 are all in a closed state, the first housing 11, the second housing 12, and the third housing 13 can be folded into an "S" shape.

[0083] The above is an illustrative example assuming the display terminal 01 includes two or three housings. In other embodiments of this application, the display terminal 01 may include three or more housings. This application does not limit the number of housings, as long as there are two or more. For any of the above-mentioned display terminal 01 types, the aforementioned hinge mechanism 20 may be provided between two adjacent housings. The following example, using a two-fold display terminal 01 as an inward-folding type, illustrates the structure of the hinge mechanism 20 and the display terminal 01 having the hinge mechanism 20, so that the hinge mechanism 20 and the display terminal 01 can stably maintain the aforementioned preset intermediate state. In this case, the user can perform touch screen operations on the display terminal 01 in the preset intermediate state, thereby reducing the shaking phenomenon of the display terminal 01 during the touch screen operation.

[0084] In some embodiments of this application, as shown in FIG7, the rotating shaft mechanism 20 may include: a main shaft 201, a first synchronization component 202, a first damping structure 203, a first cam structure 204, and a second damping structure 205. The main shaft 201 extends along a first direction Y. For example, as shown in FIG8 (an exploded view of the rotating shaft mechanism 20 shown in FIG7), the main shaft 201 may include at least one bearing seat 2011. FIG8 is an example illustrating two bearing seats 2011. Along the first direction Y, the two bearing seats 2011 may be disposed at both ends of the component formed by the first synchronization component 202, the first damping structure 203, the first cam structure 204, and the second damping structure 205.

[0085] Furthermore, the main shaft 201 may also include a cover (not shown in FIG8) that covers the shaft seat. The shaft seat 2011 is positioned away from the display screen 10 (as shown in FIG1) relative to the cover, i.e., the shaft seat 2011 is located below the cover. A receiving space can be formed between the shaft seat 2011 and the cover. This receiving space can accommodate at least a portion of the first synchronization component 202, the first damping structure 203, the first cam structure 204, and the second damping structure 205. During the unfolding and closing of the display terminal 01, the first synchronization component 202 enables the first housing 11 and the second housing 12 (as shown in FIG7) to rotate synchronously, thereby ensuring that the included angles between the first housing 11 and the second housing 12 and the rotating shaft mechanism 20 are the same.

[0086] Furthermore, continuing as shown in Figure 8, the first damping structure 203 and the second damping structure 205 are used to provide damping force to the first synchronization component 202. When the rotating shaft mechanism 20 is in the aforementioned preset intermediate state, the first cam structure 204 is used to transmit the damping force provided by the second damping structure 205 to the first synchronization component 202, thereby increasing the damping force in the preset intermediate state. Additionally, when the rotating shaft mechanism 20 is in the aforementioned flattened state and closed state, the first cam structure 204 is also used to prevent the damping force from the second damping structure 205 from being transmitted to the first synchronization component 202. Therefore, the damping force generated by the rotating shaft mechanism 20 during the folding process provided in this embodiment can change according to the change in the folding angle of the rotating shaft mechanism 20.

[0087] The structures of the first synchronization component 202, the first damping structure 203, the first cam structure 204, and the second damping structure 205 described above are illustrated below. In some embodiments of this application, as shown in FIG8, the first synchronization component 202 may include a first rotating arm 2021 and a second rotating arm 2022 that are connected by transmission. The first rotating arm 2021 and the second rotating arm 2022 are respectively rotatably connected to the main shaft 201. For example, in order for the synchronization component 202 to synchronously drive the first housing 11 and the second housing 12 shown in FIG7 to rotate, the rotating shaft mechanism 20 may also include a first fixed frame 211 and a second fixed frame 212. Wherein, along the second direction X, the first fixed frame 211 and the second fixed frame 212 may be located on both sides of the main shaft 201.

[0088] Based on this, as shown in Figure 8, the first rotating arm 2021 is positioned closer to the main shaft 201 than the first fixed frame 211. The first fixed frame 211 can be connected to the first housing 11 (as shown in Figure 7). For example, the first fixed frame 211 and the first housing 11 can be detachably connected by means of threaded connection or other methods. Alternatively, the first fixed frame 211 and the first housing 11 can be connected by adhesive bonding or other methods. Alternatively, the first fixed frame 211 can also be connected to the first housing 11 as an integral structural component through injection molding; this application does not limit this. Similarly, the second fixed frame 212 can be connected to the second housing 12. The connection method between the second fixed frame 212 and the second housing 12 can be derived similarly to the connection method between the first fixed frame 211 and the first housing 11, and will not be elaborated further here.

[0089] Furthermore, as shown in FIG8, the first rotating arm 2021 can be rotatably connected to the main shaft 201 around the first direction Y, and the first rotating arm 2021 can also be drive-connected to the first fixed frame 211. To enable the first rotating arm 2021 to have the aforementioned cooperative connections with the main shaft 201 and the first fixed frame 211, in some embodiments of the application, as shown in FIG9, the first rotating arm 2021 may include a first rotating portion 20211 and a first extension portion 20212 connected to each other. The first extension portion 20212 may be located on the side of the first rotating portion 20211 opposite to the main shaft 201. The first rotating portion 20211 can be rotatably connected to the main shaft 201, and the first extension portion 20212 can be drive-connected to the first fixed frame 211.

[0090] In this embodiment of the application, "transmission connection" refers to a connection between two connected components that can transmit mechanical motion or torque. Specifically, in a transmission connection, when one component moves (e.g., rotates or moves), it can drive the other component to move (e.g., rotate or move). This "transmission connection" includes, but is not limited to, sliding connections, rotating connections, fixed connections (including non-detachable and detachable connections; for example, a detachable connection can be a snap-fit ​​or threaded connection), and surface contact such as abutment or engagement.

[0091] For example, continuing as shown in Figure 9, the first extension 20212 can be slidably connected to the first fixing frame 211. In this case, while the first rotating arm 2021 rotates relative to the main shaft 201 (as shown in Figure 7) via the first rotating part 20211, the first rotating arm 2021 can also slide relative to the first fixing frame 211 along the second direction X via the first extension 20212, so that the first fixing frame 211 can move closer to or further away from the main shaft 201 (as shown in Figure 7), thereby causing the first fixing frame 211 to gradually flip to a flattened (or folded) state. In this case, the first rotating arm 2021 can drive the first fixing frame 211, thereby driving the first housing 11 connected to the first fixing frame 211 to rotate relative to the main shaft 201 (as shown in Figure 7).

[0092] Furthermore, continuing as shown in Figure 9, the second rotating arm 2022 may include a second rotating portion 20221 and a second extension portion 20222 connected together. Similarly, the second extension portion 20222 may be located on the side of the second rotating portion 20221 opposite to the main shaft 201. The second rotating portion 20221 is drive-connected to the main shaft 201, and the second extension portion 20222 is drive-connected to the second fixed frame 212. For example, similarly, the second extension portion 20222 can be slidably connected to the second fixed frame 212.

[0093] Continuing as shown in Figure 9, when the first rotating arm 2021 rotates relative to the main shaft 201 (as shown in Figure 7) via the first rotating part 20211, since the first rotating part 20211 is connected to the second rotating part 20221 of the second rotating arm 2022, the first rotating part 20211 can drive the second rotating part 20221 to rotate relative to the main shaft 201. Furthermore, the second rotating arm 2022 can slide relative to the second fixed frame 212 along the second direction X via the second extension 20222, allowing the second fixed frame 212 to move closer to or further away from the main shaft 201, thereby gradually flipping the second fixed frame 212 to a flattened or closed state. In this way, the second rotating arm 2022 can drive the second fixed frame 212, which in turn drives the second housing 12 connected to the second fixed frame 212 to rotate relative to the main shaft 201, thus enabling the first housing 11 and the second housing 12 to rotate synchronously, ultimately achieving the closing and flattening of the rotating shaft mechanism 20 and the entire display terminal.

[0094] The above example, using the sliding connection between the first extension 20212 of the first rotating arm 2021 and the first fixed frame 211 in Figure 9, illustrates the transmission connection between the first extension 20212 and the first fixed frame 211. Similarly, the sliding connection between the second extension 20222 of the second rotating arm 2022 and the second fixed frame 212 illustrates the transmission connection between the second extension 20222 and the second fixed frame 212.

[0095] In some other embodiments of this application, the transmission connection between the first extension portion 20212 and the first fixed frame 211 can also refer to the first extension portion 20212 being rotatably connected to the first fixed frame 211. Similarly, the transmission connection between the second extension portion 20222 and the second fixed frame 212 can also refer to the second extension portion 20222 being rotatably connected to the second fixed frame 212.

[0096] Alternatively, in some embodiments of this application, when the first rotating part 20211 is rotatably connected to the main shaft 201, the first extension part 20212 can be fixedly connected to the first fixed frame 211, so that the positions of the first extension part 20212 and the first fixed frame 211 are relatively fixed, thereby realizing the transmission connection between the first extension part 20212 and the first fixed frame 211. Similarly, when the second rotating part 20221 is rotatably connected to the main shaft 201, the second extension part 20222 can be fixedly connected to the second fixed frame 212, so that the positions of the second extension part 20222 and the second fixed frame 212 are relatively fixed, thereby realizing the transmission connection between the second extension part 20222 and the second fixed frame 212. This application does not limit the transmission connection method between the first extension part 20212 and the first fixed frame 211, or the transmission connection method between the second extension part 20222 and the second fixed frame 212.

[0097] This application does not limit the number of the aforementioned hinge mechanisms 20. Figure 7 illustrates an example where the display terminal 01 has one hinge mechanism 20. In other embodiments of this application, the display terminal 01 may have two or more hinge mechanisms 20, and the main shaft 201 of the two or more hinge mechanisms 20 may be shared.

[0098] Furthermore, in order to enable the first rotating arm 2021 to rotate relative to the main shaft 201, in some embodiments of this application, continuing as shown in FIG9, the rotating shaft mechanism 20 may further include a first connecting shaft 31, which can be connected to the main shaft 201. For example, both ends of the first connecting shaft 31 can be connected to two bearing seats 2011 as shown in FIG8, respectively. Continuing as shown in FIG9, the first connecting shaft 31 can pass through the first rotating part 20211 of the first rotating arm 2021 along the first direction Y. The first rotating part 20211 can rotate around the first connecting shaft 31, so that the first rotating arm 2021 can be rotatably connected to the main shaft 201 (as shown in FIG8) through the first connecting shaft 31.

[0099] Similarly, in order to enable the second rotating arm 2022 to rotate relative to the main shaft 201, in some embodiments of this application, continuing as shown in FIG9, the rotating shaft mechanism 20 may further include a second connecting shaft 32 connected to the main shaft 201 (as shown in FIG8). The connection method between the second connecting shaft 32 and the main shaft 201 is the same as described above, and will not be repeated here. In addition, along the first direction Y, the second connecting shaft 32 can pass through the second rotating part 20221 of the second rotating arm 2022, and the second rotating part 20221 can rotate around the second connecting shaft 32, so that the second rotating arm 2022 can be rotatably connected to the main shaft 201 through the second connecting shaft 32.

[0100] The above example illustrates the rotational connection of the first rotating part 20211 and the second rotating part 20221 to the main shaft 201 via physical shafts (i.e., the first connecting shaft 31 and the second connecting shaft 32). Alternatively, in some embodiments of this application, the first rotating part 20211 and the second rotating part 20221 may also be rotationally connected to the main shaft 201 via virtual shafts. This virtual shaft can refer to a component with an arc-shaped structure, where the rotation center of the arc-shaped structure serves as the virtual shaft. The two rotatably connected components can rotate relative to the virtual shaft. Furthermore, as the two rotatably connected components rotate relative to each other, the position of the virtual shaft remains unchanged.

[0101] For example, either the first rotating part 20211 or the second rotating part 20221 can be a semi-circular arc wall structure. This arc wall structure can serve as the aforementioned circular arc structure, with its axis serving as the aforementioned virtual axis. Furthermore, a circular arc groove can be formed within the main shaft 201. Based on this, the aforementioned arc wall structure can extend into the circular arc groove. The shapes of the arc wall structure and the circular arc groove are matched so that the arc wall structure can slide within the circular arc groove, thereby achieving a rotational connection between the rotating part and the main shaft 201.

[0102] This application does not limit the rotational connection method between the first rotating arm 2021 and the second rotating arm 2022 and the main shaft 201. For ease of explanation, the following examples are all based on the example of the first rotating part 20211 and the second rotating part 20221 being rotatably connected to the main shaft 201 through physical shafts (i.e., the first connecting shaft 31 and the second connecting shaft 32).

[0103] As described above, as shown in Figure 9, the first rotating arm 2021 and the second rotating arm 2022 are connected in a transmission manner so that the first housing 11 and the second housing 12 can move synchronously. In some embodiments of this application, in order to make the first rotating arm 2021 and the second rotating arm 2022 connected in a transmission manner, as shown in Figure 10 (a schematic diagram along line A1 in Figure 9), the first synchronization component 202 may further include a first gear 2023 and a second gear 2024. The first gear 2023 may be located between the rotating arm 2021 and the second rotating arm 2022, and the first gear 2023 is connected in a transmission manner to the first rotating arm 2021. The second gear 2024 may be located between the first gear 2023 and the second rotating arm 2022, and the second gear 2024 is connected in a transmission manner to the first gear 2023 and the second rotating arm 2022.

[0104] As an example, continuing as shown in Figure 10, the first rotating part 20211 of the first rotating arm 2021 has a first gear surface G1 on the side facing the second rotating part 20221 of the second rotating arm 2022. The second rotating part 20221 has a second gear surface G2 on the side facing the first rotating part 20211. The first gear 2023 can mesh with the first gear surface G1 on the first rotating part 20211, and the second gear 2024 can mesh with the second gear surface G2 on the second rotating part 20221. Furthermore, the first gear 2023 and the second gear 2024 can directly mesh to achieve a transmission connection between the first gear 2023 and the second gear 2024. Alternatively, as another example, the aforementioned rotating shaft mechanism 20 may further include a plurality of meshing gears located between the first gear 2023 and the second gear 2024, so that the first gear 2023 and the second gear 2024 achieve a transmission connection through the plurality of gears.

[0105] Based on this, continuing as shown in Figure 10, when the first rotating arm 2021 rotates (e.g., counterclockwise), it can drive the first gear 2023, which meshes with the first gear surface G1, to rotate (e.g., clockwise). Furthermore, the first gear 2023 can drive the second gear 2024 to rotate (e.g., counterclockwise), and drive the second rotating arm 2022, which meshes with the second gear 2024 via the second gear surface G2, to rotate (e.g., clockwise), thereby achieving a transmission connection between the first rotating arm 2021 and the second rotating arm 2022.

[0106] In this situation, the first rotating arm 2021 and the second rotating arm 2022 gradually rotate from the flattened state shown in Figure 10 to the state shown in Figure 11, so that an included angle β is generated between the first rotating arm 2021 and the second rotating arm 2022, which is less than 180°. At this time, the rotating shaft mechanism 20 can be folded to the aforementioned preset intermediate state shown in Figure 12. The first synchronization component 202 can bring the first rotating arm 2021 and the second rotating arm 2022 closer to each other, and the first rotating arm 2021 and the second rotating arm 2022 rotate at the same or approximately the same angle, so as to improve the consistency of the rotation angle of the first housing 11 and the second housing 12.

[0107] For example, as shown in Figure 12, in order to install the first gear 2023 and the second gear 2024, the aforementioned rotating shaft mechanism 20 may further include a third connecting shaft 33 and a fourth connecting shaft 34. The connection method between the third connecting shaft 33 and the fourth connecting shaft 34 and the main shaft 201 (as shown in Figure 8) is similar and will not be repeated here. Furthermore, along the first direction Y, the third connecting shaft 33 can pass through the first gear 2023, which is rotatably connected to the third connecting shaft 33, allowing the first gear 2023 to rotate around the third connecting shaft 33. Similarly, along the first direction Y, the fourth connecting shaft 34 can pass through the second gear 2024, which is rotatably connected to the fourth connecting shaft 34, allowing the second gear 2024 to rotate around the fourth connecting shaft 34.

[0108] Furthermore, as the first rotating arm 2021 and the second rotating arm 2022 continue to rotate, as shown in Figure 13, the included angle between the first rotating arm 2021 and the second rotating arm 2022 is 0° or approximately 0°, which allows a teardrop-shaped or "U"-shaped accommodating space to be formed between the first rotating arm 2021 and the second rotating arm 2022 to accommodate the folded display screen 10 (as shown in Figure 1). At this time, the rotating shaft mechanism 20 can be in the closed state as shown in Figure 14, and the first synchronization component 202 can cause the first rotating arm 2021 and the second rotating arm 2022 to move closer together.

[0109] The above example illustrates the folding process of the rotating shaft mechanism 20, from the flattened state shown in Figure 10, to the preset intermediate state shown in Figure 11, and then to the closed state shown in Figure 13. It demonstrates the transmission connection between the first rotating arm 2021 and the second rotating arm 2022 via the first gear 2023 and the second gear 2024. In other embodiments of this application, changing the initial rotation direction of the first rotating arm 2021 or the second rotating arm 2022 can also cause the folding process of the rotating shaft mechanism 20 to proceed from the closed state shown in Figure 13, to the preset intermediate state shown in Figure 11, and then to the flattened state shown in Figure 10. The transmission connection relationships between the first rotating arm 2021, the second rotating arm 2022, the first gear 2023, and the second gear 2024 are the same as described above and will not be repeated here.

[0110] As shown in Figure 15, the first damping structure 203 provides damping to the first synchronization component 202, enabling the rotating shaft mechanism 20 to smoothly and steadily perform the aforementioned folding process. The first damping structure 203 will be described in detail below. In some embodiments of this application, along the first direction Y, the first damping structure 203 can be disposed on one side of the first synchronization component 202, and can abut against the first synchronization component 202, thereby transmitting the damping force provided by the first damping structure 203 to the first synchronization component 202.

[0111] Based on this, in order to ensure that the first damping structure 203 can provide damping force to the first synchronization component 202 while abutting against it, as shown in Figure 15, the first damping structure 203 may include a second cam structure 2031 and an elastic structure 2032. Along the first direction Y, the elastic structure 2032 is disposed on the side of the second cam structure 2031 opposite to the first synchronization component 202, and the elastic structure 2032 is connected to or abuts against the second cam structure 2031. The elastic structure 2032 can apply a positive pressure to the second cam structure 2031, which can be converted into torque by the second cam structure 2031 and act on the first synchronization component 202.

[0112] For example, the elastic structure 2032 can be a compression spring or a disc spring. Continuing as shown in Figure 15, one end of the elastic structure 2032 facing the second cam structure 2031 can extend into the second cam structure 2031, and the elastic structure 2032 can be connected to the second cam structure 2031. Alternatively, the end of the elastic structure 2032 facing the second cam structure 2031 can be connected to the surface of the second cam structure 2031 opposite to the first synchronization component 202. The elastic structure 2032 can be connected to the second cam structure 2031 by bonding, welding, or integral molding processes.

[0113] In order for the first damping structure 203 to abut against the first synchronization component 202, the elastic structure 2032 can always be in a compressed state when the rotating shaft mechanism 20 is folded to any angle. For example, during the assembly of the rotating shaft mechanism 20, the installed elastic structure 2032 can have a certain amount of pre-compression. For example, the maximum compression of the elastic structure 2032 can be related to the pre-compression of the elastic structure 2032 and the structure and size of the cam surface that mates between the second cam structure 2031 and the first synchronization component 202, which is not limited in this application.

[0114] For example, continuing as shown in Figure 15, when the rotating shaft mechanism 20 includes a first connecting shaft 31, a second connecting shaft 32, a third connecting shaft 33, and a fourth connecting shaft 34 that respectively pass through the first rotating arm 2021, the second rotating arm 2022, the first gear 2023, and the second gear 2024, the aforementioned first damping structure 203 may include four elastic structures 2032, which can be respectively installed on the first connecting shaft 31, the second connecting shaft 32, the third connecting shaft 33, and the fourth connecting shaft 34. In this way, it is unnecessary to separately provide structural components for installing the aforementioned elastic structures 2032, thereby simplifying the structure of the entire rotating shaft mechanism 20. In this case, the first connecting shaft 31, the second connecting shaft 32, the third connecting shaft 33, and the fourth connecting shaft 34 pass through the aforementioned first damping structure 203.

[0115] Alternatively, in other embodiments, elastic structures 2032 can be provided on one, two, or three of the connecting shafts: the first connecting shaft 31, the second connecting shaft 32, the third connecting shaft 33, and the fourth connecting shaft 34. Or, when other gears and connecting shafts for mounting the gears are provided between the first gear 2023 and the second gear 2024, elastic structures 2032 can also be provided on the aforementioned connecting shafts. This application does not limit the number of elastic structures 2032. Increasing the number of elastic structures 2032 can reduce the probability of wear on a single elastic structure 2032, improving the reliability of the rotating shaft mechanism 20 and the system robustness. Reducing the number of elastic structures 2032 when the first damping structure 203 abuts against the first synchronization component 202 simplifies the structure of the rotating shaft mechanism 20.

[0116] Based on this, in order for the second cam structure 2031 to convert the positive pressure from the elastic structure 2032 into torque, in some embodiments of this application, as shown in FIG16 (a schematic diagram along A2 in FIG15), the first synchronization component 202 has a third cam surface T3, which has at least one third protrusion 43. For example, when the first synchronization component 202 includes a first rotating arm 2021, a second rotating arm 2022, a first gear 2023, and a second gear 2024, the surfaces of the first rotating arm 2021, the second rotating arm 2022, the first gear 2023, and the second gear 2024 facing the second cam structure 2031 (as shown in FIG15) are respectively the ninth end face S9, the tenth end face S10, the eleventh end face S11, and the twelfth end face S12.

[0117] In this case, continuing as shown in FIG16, the aforementioned third cam surface T3 may include the aforementioned ninth end surface S9, tenth end surface S10, eleventh end surface S11, and twelfth end surface S12. At least one of the aforementioned ninth end surface S9, tenth end surface S10, eleventh end surface S11, and twelfth end surface S12 may have at least one third protrusion 43.

[0118] Furthermore, as shown in Figure 17 (a schematic diagram along direction A3 in Figure 15), the second cam structure 2031 may have a fourth cam surface T4, which has at least one fourth protrusion 44. For example, if any one of the ninth end face S9, tenth end face S10, eleventh end face S11, and twelfth end face S12 shown in Figure 16 has a third protrusion 43, then the portion of the fourth cam surface T4 of the second cam structure 2031 shown in Figure 17 that overlaps with the positions of the ninth end face S9, tenth end face S10, eleventh end face S11, and twelfth end face S12 may also have the aforementioned fourth protrusion 44. In this way, the third protrusion 43 on any one of the ninth end face S9, tenth end face S10, eleventh end face S11, and twelfth end face S12 can abut against the fourth cam surface T4 at different positions on the fourth cam surface T4.

[0119] In this context, the portion of the fourth cam surface T4 that overlaps with the ninth end surface S9 refers to the portion of the fourth cam surface T4 that overlaps with the ninth end surface S9 in its vertical projection onto the third cam surface T3. The same logic applies to the portions of the fourth cam surface T4 that overlap with the tenth end surface S10, the eleventh end surface S11, or the twelfth end surface S12, which will not be elaborated upon here.

[0120] The above example illustrates that a third protrusion 43 is present on any one of the nine end faces S9, tenth end face S10, eleventh end face S11, and twelfth end face S12 shown in Figure 16. In other embodiments of this application, when only the ninth end face S9 and the tenth end face S10 have the third protrusion 43, and the eleventh end face S11 and the twelfth end face S12 do not have the third protrusion 43, the portion of the fourth cam surface T4 that overlaps with the ninth end face S9 and the tenth end face S10 may have the aforementioned fourth protrusion 44. The portion of the fourth cam surface T4 that overlaps with the eleventh end face S11 and the twelfth end face S12 may not have the aforementioned fourth protrusion 44.

[0121] Alternatively, in some embodiments of this application, as shown in FIG18 (another schematic diagram along A3 in FIG15), the second cam structure 2031 may include a first substructure 20311 and a second substructure 20312 spaced apart. The first substructure 20311 may overlap with the position of the ninth end face S9, and the surface S01 of the first substructure 20311 facing the ninth end face S9 has at least one fourth protrusion 44. The second substructure 20312 may overlap with the position of the tenth end face S10, and the surface S01 of the second substructure 20312 facing the tenth end face S10 has at least one fourth protrusion 44. Therefore, the fourth cam surface T4 includes the aforementioned surfaces S01 and S02. In this case, the first synchronization component 202 shown in FIG16 may include the aforementioned first gear 2023 and second gear 2024. Alternatively, the first synchronization component 202 may include more gears in addition to the first gear 2023 and the second gear 2024. Alternatively, the first synchronization component 202 may consist only of the first rotating arm 2021 and the second rotating arm 2022, which is not limited in this application.

[0122] Figure 8 illustrates an example where the second cam structure 2031 includes two substructures (i.e., the first substructure 20311 and the second substructure 20312). In other embodiments, the second cam structure 2031 may include one, three, four, or more substructures. The positions of these substructures and the overlapping positions of the end faces of different components in the first synchronization assembly 202 can be derived similarly in this application, and will not be repeated here.

[0123] The following example illustrates the contact method between the first synchronizing component 202 having a third cam surface T3 and the fourth cam surface T4 of the second cam structure 2031 during the folding process of the rotating shaft mechanism 20. In some embodiments of this application, as shown in FIG19 (a schematic diagram along A4 in FIG17), taking the fourth protrusion 44 on the fourth cam surface T4 as an example, the fourth protrusion 44 may have a top surface P1 and a first inclined side surface P12 and a second inclined side surface P22 located on both sides of the top surface P1. The top surface P1 may be an inclined surface or a plane, and this application does not limit it in this regard. Similarly, the third protrusion 43 that cooperates with the fourth protrusion 44 may also have the above-mentioned top surface and inclined side surface.

[0124] For example, when the user needs to flatten the display terminal 01, as shown in Figure 20 (an enlarged view of B1 in Figure 15), the first rotating arm 2021 can rotate clockwise so that the first inclined side surface P12 (or the second inclined side surface P22) of the third protrusion 43 of at least one of the first rotating arm 2021, the second rotating arm 2022, the first gear 2023 and the second gear 2024 of the first synchronization component 202 can abut against the first inclined side surface P12 (as shown in Figure 19) of the fourth protrusion 44 in the second cam structure 2031, and the aforementioned third protrusion 43 and fourth protrusion 44 engage.

[0125] Continuing as shown in Figure 20, along the first direction Y, the elastic structure 2032 applies a force F to the second cam structure 2031. Under the action of the force F, the second cam structure 2031 applies a thrust F1 perpendicular to the first oblique side P12 of the third protrusion 43 to the third protrusion 43. The thrust F1 has a component force f1 along the second direction X. In order to flatten the rotating shaft mechanism, the first rotating arm 2021 can rotate clockwise, and under the action of the component force f1, the first fixed frame 211 (as shown in Figure 9) can move closer to the main shaft relative to the first rotating arm 2021. At the same time, the second rotating arm 2022 rotates counterclockwise, and under the action of the component force f1, the second fixed frame 212 (as shown in Figure 9) can move closer to the main shaft relative to the second rotating arm 2022, thereby facilitating the flattening of the display terminal.

[0126] Furthermore, when the angle between the first housing 11 and the second housing 12 (as shown in FIG. 9) is about to approach 180° (e.g., 175°), the component force f1 provided by the first damping structure 203 (including the elastic structure 2032 and the second cam structure 2031) to the first synchronization component 202 can act as a rotating shaft mechanism 20 to provide assistance to the first housing 11 and the second housing 12 for flattening, so that the angle between the first housing 11 and the second housing 12 can quickly reach 180°, so that the display terminal 01 with the rotating shaft mechanism 20 can quickly be in a fully flattened state.

[0127] Alternatively, as another example, when the display terminal 01 is in a fully closed state, when the user applies a slight force to the first housing 11 or the second housing 12, causing a small angle, such as 5° or 10°, between the first housing 11 and the second housing 12, similarly, the component force f1 provided by the first damping structure 203 (including the elastic structure 2032 and the second cam structure 2031) to the first synchronization component 202 can serve as a pivot mechanism 20 to provide assistance to the first housing 11 and the second housing 12 for self-opening, so that the angle between the first housing 11 and the second housing 12 can continue to increase to achieve self-opening.

[0128] Alternatively, as another example, when the user needs to close the display terminal 01, the first rotating arm 2021 can rotate counterclockwise so that the second inclined side P22 (or the first inclined side P12) of the third protrusion 43 can abut against the second inclined side P22 of the fourth protrusion 44 (as shown in Figure 19). Similarly, under the action of the force F provided by the elastic structure 2032, the second cam structure 2031 can apply a thrust perpendicular to the second inclined side P22 of the third protrusion 43 to the third protrusion 43. The thrust has a component force along the second direction X. Under the action of the component force, the first fixing frame 211 (as shown in Figure 9) can move away from the main shaft relative to the first rotating arm 2021. At the same time, the second rotating arm 2022 rotates counterclockwise, and under the action of the component force, the second fixing frame 212 (as shown in Figure 9) can move away from the main shaft relative to the second rotating arm 2022, thereby facilitating the closing of the display terminal.

[0129] For example, when the angle between the first housing 11 and the second housing 12 (as shown in FIG. 9) is about to approach 0° (e.g., 5°), the component force provided by the first damping structure 203 (including the elastic structure 2032 and the second cam structure 2031) to the first synchronization component 202 can act as a pivot mechanism 20 to provide assistance to the first housing 11 and the second housing 12 for closing, so that the angle between the first housing 11 and the second housing 12 quickly reaches 0°, so that the display terminal 01 with the pivot mechanism 20 can quickly be in a fully closed state.

[0130] Based on this, to increase the stability of the rotating shaft mechanism 20 during rotation, as shown in Figure 21, the rotating shaft mechanism 20 may further include a second synchronization component 206. Along the first direction Y, the second synchronization component 206 may be disposed on the side of the first damping structure 203 opposite to the first synchronization component 202. Furthermore, the first damping structure 203 may also include a third cam structure 2033. The aforementioned elastic structure 2032 may be located between the second cam structure 2031 and the third cam structure 2033. The end of the elastic structure 2032 opposite to the second cam structure 2031 may be connected to or abut against the third cam structure 2033. The connection method between the elastic structure 2032 and the third cam structure 2033 is similar and will not be elaborated here. Similarly, the elastic structure 2032 may provide positive pressure to the third cam structure 2033, so that the third cam structure 2033 can abut against the second synchronization component 206. This positive pressure can be converted into torque by the third cam structure 2033 and act on the first synchronization component 202. Furthermore, the third cam structure 2033 can be configured in the same way as the second cam structure 2031. The third cam structure 2033 may include one, two, three, four, or more than four substructures, which will not be described in detail here.

[0131] Continuing as shown in Figure 21, the second synchronization component 206 may include a third rotating arm 2061 and a fourth rotating arm 2062 connected by a transmission connection. The third rotating arm 2061 and the fourth rotating arm 2062 are rotatably connected to the main shaft 201 (as shown in Figure 8). Alternatively, as another example, the second synchronization component 206 may also include a third gear 2063 and a fourth gear 2064 located between the third rotating arm 2061 and the fourth rotating arm 2062. Similarly, the third gear 2063 and the fourth gear 2064 mesh so that the third rotating arm 2061 and the fourth rotating arm 2062 are connected by a transmission connection via the third gear 2063 and the fourth gear 2064. The transmission connection method of the third rotating arm 2061 and the fourth rotating arm 2062 with the first fixed frame 211 and the second fixed frame 212 shown in Figure 8 is similar and will not be described again here.

[0132] In this case, continuing as shown in Figure 21, to facilitate the installation of the second synchronization component 206 and the third cam structure 2033, when the rotating shaft mechanism 20 includes the aforementioned first connecting shaft 31, second connecting shaft 32, third connecting shaft 33, and fourth connecting shaft 34, the first connecting shaft 31, second connecting shaft 32, third connecting shaft 33, and fourth connecting shaft 34 can pass through the aforementioned third cam structure 2033. Furthermore, the first connecting shaft 31, second connecting shaft 32, third connecting shaft 33, and fourth connecting shaft 34 can respectively pass through the third rotating arm 2061, the fourth rotating arm 2062, the third gear 2063, and the fourth gear 2064.

[0133] Furthermore, in order for the first damping structure 203 to provide torque to the second synchronization component 206, in some embodiments of this application, as shown in FIG22 (an enlarged schematic diagram at position B2 in FIG21), the second synchronization component 206 may have a fifth cam surface T5, which has at least one fifth protrusion 45. Additionally, the third cam structure 2033 may have a sixth cam surface T6, which may have at least one sixth protrusion 46, which can abut against the fifth protrusion 45. Similarly, during the rotation of the third rotating arm 2061 or the fourth rotating arm 2062, the inclined side of the sixth protrusion 46 can abut against the inclined side of the fifth protrusion 45, so as to facilitate smoother unfolding or opening of the display terminal 01, and also to achieve rapid unfolding, rapid closing, and self-springing of the display terminal 01.

[0134] As described above, when the display terminal 01 is in a preset intermediate state between the flattened and closed states, it needs to maintain stability in this intermediate state to avoid shaking that could affect user experience, such as touchscreen operations. In this case, the hinge mechanism 20 of the display terminal 01 needs to have significant damping. Furthermore, when the display terminal is in either the flattened or closed state, for example, when rapid flattening, rapid closing, or self-opening is required, the hinge mechanism 20 of the display terminal 01 may not need to provide significant damping to avoid affecting the rapid flattening, rapid closing, or self-opening effect. Therefore, the damping generated by the display terminal 01 or the hinge mechanism 20 during folding needs to change according to the folding angle.

[0135] To meet the requirements of damping variation, as shown in Figure 23, the rotating shaft mechanism 20 may further include a first cam structure 204 and a second damping structure 205. Along the first direction Y, the first cam structure 204 is located on the side of the first synchronization component 202 opposite to the first damping structure 203. Furthermore, along the first direction Y, the second damping structure 205 is disposed on the side of the first cam structure 204 opposite to the first synchronization component 202, and the second damping structure 205 abuts against the first cam structure 204, so that the second damping structure 205 provides damping force to the first synchronization component 202 through the first cam structure 204.

[0136] In some embodiments of this application, the aforementioned rotating shaft mechanism 20 may further include a rotating arm assembly 207 as shown in FIG23. The rotating arm assembly 207 may be disposed on the side of the second damping structure 205 opposite to the first cam structure 204. For example, the rotating arm assembly 207 may include two rotating arms, and the arrangement of these rotating arms is similar and will not be described further here.

[0137] Furthermore, as shown in Figure 24 (a schematic diagram along direction A5 in Figure 23), the first synchronization component 202 may have a first cam surface T1, which has at least one first protrusion 41. For example, in the case where the first synchronization component 202 includes a first rotating arm 2021, a second rotating arm 2022, a first gear 2023, and a second gear 2024, the surface of the first rotating arm 2021 facing the first cam structure 204 is a first end face S1, the surface of the second rotating arm 2022 facing the first cam structure 204 is a second end face S2, the surface of the first gear 2023 facing the first cam structure 204 is a third end face S3, and the surface of the second gear 2024 facing the first cam structure 204 is a fourth end face S4.

[0138] In this case, continuing as shown in FIG24, the aforementioned first cam surface T1 may include a first end surface S1, a second end surface S2, a third end surface S3, and a fourth end surface S4. At least one of the aforementioned first end surface S1, second end surface S2, third end surface S3, and fourth end surface S4 may have at least one first protrusion 41.

[0139] Furthermore, continuing as shown in Figure 24, the first cam structure 204 may have a second cam surface T2. As shown in Figure 25A (a schematic diagram along line A6 in Figure 24), the second cam surface T2 may have at least one second protrusion 42. For example, the first end face S1, the second end face S2, the third end face S3, and the fourth end face S4 as shown in Figure 24 all have the first protrusion 41. In this way, the first rotating arm 2021, the second rotating arm 2022, the first gear 2023, and the second gear 2024 in the first synchronization assembly 202 may all have the aforementioned first protrusion 41, thereby allowing the damping force from the first damping structure 203 and the second damping structure 205 to be uniformly applied to the first synchronization assembly 202.

[0140] Furthermore, when the first end face S1, the second end face S2, the third end face S3, and the fourth end face S4 all have the first protrusion 41, the portion of the second cam surface T2 of the first cam structure 204 shown in FIG25A that overlaps with the positions of the first end face S1, the second end face S2, the third end face S3, and the fourth end face S4 can all have the aforementioned second protrusion 42. This allows the overlapping portions of the first cam structure 204 and the first synchronization component 202 to cooperate with each other through the aforementioned first protrusion 41 and second protrusion 42, so that the torque from the second damping structure 205 can be stably transmitted to the first synchronization component 202, and stably withdrawn from the first synchronization component 202.

[0141] Based on this, in some embodiments of this application, in order to ensure that the portion of the second cam surface T2 of the first cam structure 204 shown in FIG25A that overlaps with the positions of the first end surface S1, the second end surface S2, the third end surface S3 and the fourth end surface S4 can all have the aforementioned second protrusion 42, as shown in FIG25A, the first cam structure 204 may include a first part 2041, a second part 2042, a third part 2043 and a fourth part 2044.

[0142] As shown in Figure 25A, the surface of the first part 2041 facing the first synchronization component 202 (as shown in Figure 24) is the fifth end face S5. The vertical projection of this fifth end face S5 onto the first cam surface T1 (as shown in Figure 24) coincides with the first end face S1. Furthermore, the surface of the second part 2042 facing the first synchronization component 202 is the sixth end face S6, and the vertical projection of the sixth end face S6 onto the first cam surface T1 coincides with the second end face S2. The surface of the third part 2043 facing the first synchronization component 202 is the seventh end face S7, and the vertical projection of the seventh end face S7 onto the first cam surface T1 coincides with the third end face S3. The surface of the fourth part 2044 facing the first synchronization component 202 is the eighth end face S8, and the vertical projection of the eighth end face S8 onto the first cam surface T1 coincides with the fourth end face S4.

[0143] In this case, continuing as shown in Figure 25A, the second cam surface T2 may include a fifth end surface S5, a sixth end surface S6, a seventh end surface S7, and an eighth end surface S8. As described above, in the second cam surface T2, the portion overlapping with the first end surface S1 (as shown in Figure 24) is the fifth end surface S5, the portion overlapping with the second end surface S2 (as shown in Figure 24) is the sixth end surface S6, the portion overlapping with the third end surface S3 (as shown in Figure 24) is the seventh end surface S7, and the portion overlapping with the fourth end surface S4 (as shown in Figure 24) is the eighth end surface S8. Furthermore, at least one of the aforementioned end surfaces—the fifth end surface S5, the sixth end surface S6, the seventh end surface S7, and the eighth end surface S8—may have at least one second protrusion 42.

[0144] Figure 25A illustrates the example where any one of the fifth end face S5, the sixth end face S6, the seventh end face S7, and the eighth end face S8 has a second protrusion 42. In other embodiments, only one, two, or three end faces may have the aforementioned second protrusion 42, and this application does not limit this.

[0145] Figure 25A illustrates an example of a structural component consisting of a first part 2041, a second part 2042, a third part 2043, and a fourth part 2044 connected sequentially. In this embodiment, a structural component can refer to a component formed in one machining process, such as injection molding or forging, by machining multiple connected parts together in a single operation. This allows the first part 2041, the second part 2042, the third part 2043, and the fourth part 2044 to be integrally formed in one machining process, simplifying the manufacturing process.

[0146] Alternatively, as shown in Figure 25B, along the second direction X, the first part 2041, the third part 2043, the fourth part 2044, and the second part 2042 are arranged sequentially. In this arrangement, any two adjacent parts of the first part 2041, the third part 2043, the fourth part 2044, and the second part 2042 are spaced apart. This allows the first part 2041, the third part 2043, the fourth part 2044, and the second part 2042 to be independently configured, facilitating maintenance and replacement and reducing maintenance costs.

[0147] Alternatively, as shown in Figure 25C, along the second direction X, the first part 2041, the third part 2043, the fourth part 2044, and the second part 2042 are arranged sequentially. Among these, two or three adjacent parts of the first part 2041, the third part 2043, the fourth part 2044, and the second part 2042 are connected as a single structural component. This simplifies the manufacturing process for the integrated structure, and makes the replacement and maintenance of individual components more convenient. For example, Figure 25C illustrates this by showing the first part 2041, the third part 2043, and the fourth part 2044 connected as a single structural component, with the fourth part 2044 spaced apart from the second part 2042. The same principle applies to connecting other adjacent two or three parts into a single structure, and will not be elaborated further here.

[0148] Furthermore, the above example illustrates that the first cam structure 204 comprises four parts. In other embodiments of this application, the first cam structure 204 may include only the first part 2041 and the second part 2042, or only the third part 2043 and the fourth part 2044. Alternatively, the first cam structure 204 may include only one or three of the first part 2041, the second part 2042, the third part 2043, and the fourth part 2044. Furthermore, the first cam structure 204 may include more parts than the first part 2041, the second part 2042, the third part 2043, and the fourth part 2044; this application does not limit this. For ease of explanation, the following examples illustrate that the first cam structure 204 comprises the aforementioned four parts, and each of the four parts has a second protrusion 42.

[0149] The following examples illustrate how, based on the folding state of the pivot mechanism 20 and the display terminal 01, the damping force provided by the second damping structure 205 can be transmitted to the first synchronization component 202 as needed, or the damping force provided by the second damping structure 205 can be removed. In some embodiments of this application, when the display terminal 01 is in the aforementioned preset intermediate state, the display terminal 01 needs to maintain the stability of this preset intermediate state to avoid shaking. At this time, it is necessary to transmit the damping force provided by the second damping structure 205 shown in FIG23 to the first synchronization component 202.

[0150] In this case, as shown in Figure 26, under the aforementioned preset state, the included angle β between the first rotating arm 2021 and the second rotating arm 2022 can satisfy the range of 100° < β < 140°. The second protrusion 42 of the first cam structure 204 can abut against the first protrusion 41 of the first synchronization component 202.

[0151] For example, when the first synchronization assembly 202 includes a first rotating arm 2021, a second rotating arm 2022, a first gear 2023, and a second gear 2024, and any one of the components of the first rotating arm 2021, the second rotating arm 2022, the first gear 2023, and the second gear 2024 has a first protrusion 41, the plurality of second protrusions 42 on the first cam structure 204 can abut against the first protrusions 41 of different components in the first synchronization assembly 402. Alternatively, if one, two, or three components in the first synchronization assembly 402 have the aforementioned first protrusions 41, the manner in which the second protrusions 42 in the first cam structure 204 abut against the first protrusions 41 is as described above.

[0152] In this case, as shown in Figure 27, as described above, the second protrusion 42 of the first cam structure 204 abuts against the first protrusion 41 of the first synchronization component 402, and the second damping structure 205 can abut against the first cam structure 204. Therefore, the torque Tw2 provided by the second damping structure 205 can be transmitted to the first synchronization component 202 through the first cam structure 204. Furthermore, since the first damping structure 203 can also provide torque Tw1 to the first synchronization component 202, both the first damping structure 203 and the second damping structure 205 can provide a large damping force to the first synchronization component 202, enabling the rotating shaft mechanism 20 to stably maintain the aforementioned preset intermediate state. Moreover, under the synchronous action of the first synchronization component 202, the damping forces obtained at both ends of the first rotating arm 2021 and the second rotating arm 2022 in the first synchronization component 202 are highly consistent.

[0153] In order for the second damping structure 205 to provide damping force to the first synchronization component 202, in some embodiments of this application, as shown in FIG28A, the second damping structure 205 includes at least one set of friction structures 215. One set of friction structures 215 may include a first moving friction plate 2151, a second moving friction plate 2152, and a stationary friction plate 2153, as shown in FIG28B. The first moving friction plate 2151 can be connected to the first extension 20212 of the first rotating arm 2021 (as shown in FIG28A). Furthermore, the first moving friction plate 2151 can also be rotatably connected to the main shaft 201.

[0154] For example, continuing as shown in Figure 28A, the aforementioned rotating shaft mechanism 20 may further include a first pin 35 and a second pin 36. The first pin 35 can be connected to one end of the first moving friction plate 2151 and the first rotating portion 20211 of the first rotating arm 2021. Furthermore, as shown in Figure 28B, the first connecting shaft 31 can also pass through the other end of the first moving friction plate 2151 in the first cam structure 204 (as shown in Figure 28A) and the second damping structure 205, so that the first moving friction plate 2151 can be rotatably connected to the main shaft 201 (as shown in Figure 8) via the first connecting shaft 31. In this way, when the first rotating arm 2021 rotates relative to the main shaft 201, and the first extension portion 20212 moves relative to the first fixed frame 211 (as shown in Figure 8), it can drive the first moving friction plate 2151 to rotate around the first connecting shaft 31.

[0155] Furthermore, continuing as shown in Figure 28A, the second moving friction plate 2152 is connected to the second extension 20222 of the second rotating arm 2022. The second moving friction plate 2152 can also be rotatably connected to the main shaft 201 (as shown in Figure 8). Similarly, the second pin 36 can be connected to one end of the second moving friction plate 2152 and the second rotating portion 20221 of the second rotating arm 2022. Furthermore, as shown in Figure 28B, the second connecting shaft 32 can also pass through the other end of the second moving friction plate 2152 in the second damping structure 205, so that the second moving friction plate 2152 can be rotatably connected to the main shaft 201 via the second connecting shaft 32. In this way, when the second rotating arm 2022 rotates relative to the main shaft 201, and the second extension 20222 moves relative to the second fixed frame 212 (as shown in Figure 8), it can drive the second moving friction plate 2152 to rotate around the second connecting shaft 32.

[0156] Building upon this, as shown in Figure 28A, the static friction plate 2153 in the friction structure 215 can be connected to the main shaft 201 (as shown in Figure 8). For example, the first connecting shaft 31, the second connecting shaft 32, the third connecting shaft 33, and the fourth connecting shaft 34 can pass through the static friction plate 2153 in the second damping structure 205. Furthermore, the static friction plate 2153 can be stacked with the first moving friction plate 2151 and the second moving friction plate 2152, and the static friction plate 2153 abuts against the first moving friction plate 2151 and the second moving friction plate 2152.

[0157] In this way, as the first moving friction plate 2151 and the second moving friction plate 2152 rotate relative to the main shaft 201, they can rub against the stationary friction plate 2153 to generate a frictional torque. In this case, as shown in FIG27, when the second protrusion 42 of the first cam structure 204 abuts against the first protrusion 41 of the first synchronization component 402, the second damping structure 205 can transmit the aforementioned frictional torque to the first synchronization component 202 through the first cam structure 204.

[0158] Furthermore, in some other embodiments of this application, when the display terminal 01 is in the aforementioned flattened state and closed state, for example, when there is a need for the aforementioned rapid flattening, rapid closing, or self-opening, the damping force provided by the second damping structure 205 to the first synchronization component 202 needs to be removed. Taking the rotating shaft mechanism 20 or the display terminal 01 in the closed state (or flattened state) as an example, as shown in FIG29, the first rotating arm 2021 rotates such that the first cam structure 204 can have a gap H1 between it and the first protrusion 41 (e.g., the first protrusion on the first rotating arm 2021 in the first synchronization component).

[0159] As shown in Figure 30, since the first cam structure 204 can have a gap H1 with the first protrusion 41, the torque Tw2 provided by the second damping structure 205 cannot be transmitted to the first synchronization component 202 through the first cam structure 204. At this time, only the first damping structure 203 provides torque Tw1 to the first synchronization component 202. Therefore, the damping force obtained by the first synchronization component 202 is small, thereby avoiding affecting the effect of the display terminal's rapid flattening, rapid closing, or self-springing open.

[0160] In summary, in the rotating shaft mechanism 20 shown in FIG23 provided in the embodiments of this application, the first rotating arm 2021 and the second rotating arm 2022, which are connected by transmission in the first synchronization component 202, can make the first housing 11 and the second housing 12 (as shown in FIG8) in the display terminal 01 rotate at the same or approximately the same angle during the folding process. In addition, along the extension direction of the main shaft 201 (as shown in FIG8), i.e., the aforementioned first direction Y, a first damping structure 203 disposed on one side of the first synchronization component 202 abuts against the first synchronization component 202, so that the first damping structure 203 can provide damping force (e.g., torque) to the first synchronization component 202, thereby making the rotation of the first rotating arm 2021 and the second rotating arm 2022 smoother.

[0161] As shown in Figure 24, the surface of the first synchronization component 202 facing the first cam structure 204 is the first cam surface T1, and the surface of the first cam structure 204 facing the first synchronization component 202 is the second cam surface T2. In the flattened and closed states of the aforementioned rotating shaft mechanism 20 and the display terminal, the first cam structure 204 can have a gap with the first protrusion 41 in the first cam surface T1, so that the first cam structure 204 and the first synchronization component 202 are in a "separated" state. At this time, the damping force provided by the second damping structure 205 to the first synchronization component 202 can be removed, facilitating the display terminal to quickly flatten, quickly close, or automatically spring open.

[0162] Alternatively, in at least one preset intermediate state, the second protrusion 42 of the first cam structure 204 (as shown in FIG. 25A) can abut against the first protrusion 41, so that the first cam structure 204 and the first synchronization component 202 are in a "meeting" state. At this time, both the first damping structure 203 and the second damping structure 205 can provide a large damping force (e.g., torque) to the first synchronization component 202, so that the rotating shaft mechanism 20 can stably maintain the above-mentioned preset intermediate state.

[0163] In this case, during the folding process, the first cam structure 204 and the first synchronization component 202 can switch from the above-mentioned "separation" state to the "meeting" state, or switch from the "meeting" state to the "separation" state, thereby realizing the "disengagement" switching between the first cam structure 204 and the first synchronization component 202.

[0164] As described above, when the first cam structure 204 and the first synchronization component 202 are in a "separated" state, the damping force (e.g., torque) of the display terminal 01 is different from the damping force (e.g., torque) of the display terminal 01 when the first cam structure 204 and the first synchronization component 202 are in a "joined" state. In this way, while switching between "separation" and "engagement" between the first cam structure 204 and the first synchronization component 202, the damping force (e.g., torque) of the display terminal 01 in different folding states (flattened state and closed state, or a preset intermediate state) can be switched, thereby changing the user's folding feel during the folding process of the display terminal 01 and improving the user experience.

[0165] The above illustration uses the rotating shaft mechanism 20, as shown in Figure 23, which has a first damping structure 203 and a second damping structure 205 as an example. In other embodiments of this application, multiple first damping structures 203 and multiple second damping structures 205 may be provided as needed, and this application does not limit this.

[0166] The following provides an example illustrating how the rotating shaft mechanism 20 provided in this application can, according to the rotational position, remove or introduce the damping force provided by the second damping structure 205 to the first synchronization component 202. In some embodiments of this application, as shown in FIG31, the rotating shaft mechanism 20 may further include a first shoulder structure 311, a second shoulder structure 321, a third shoulder structure 331, and a fourth shoulder structure 341. The first shoulder structure 311 is connected to the first connecting shaft 31. For example, the first shoulder structure 311 may be arranged around the circumference of the first connecting shaft 31. The first shoulder structure 311 may be an annular frustum structure. Along the first direction Y, the two opposing surfaces of the first shoulder structure 311 may be an annular surface, an annular conical surface, or an irregularly shaped surface; this application does not limit the specific type of surface.

[0167] Similarly, continuing as shown in Figure 31, the second shoulder structure 321 is connected to the second connecting shaft 32, the third shoulder structure 331 is connected to the third connecting shaft 33, and the fourth shoulder structure 341 is connected to the fourth connecting shaft 34. For example, the shapes of the second shoulder structure 321, the third shoulder structure 331, and the fourth shoulder structure 341 can be obtained similarly, and will not be repeated here. For ease of explanation, the following examples use a frustum-shaped annular shoulder structure, with both surfaces along the first direction being annular surfaces.

[0168] Furthermore, as shown in Figure 32, the first shoulder structure 311 can be located at the end of the first connecting shaft 31 facing the first cam structure 204, and the first shoulder structure 311 can be located within the first rotating arm 2021. The second shoulder structure 321 is located at the end of the second connecting shaft 32 facing the first cam structure 204, and the second shoulder structure 321 can be located within the second rotating arm 2022. The third shoulder structure 331 is located at the end of the third connecting shaft 33 facing the first cam structure 204, and the third shoulder structure 331 can be located within the first gear 2023. The fourth shoulder structure 341 is located at the end of the fourth connecting shaft 34 facing the first cam structure 204, and the fourth shoulder structure 341 can be located within the second gear 2024. In Figure 32, the first shoulder structure 311, the second shoulder structure 321, the third shoulder structure 331, and the fourth shoulder structure 341 are all represented by dashed lines.

[0169] Based on this, when the rotating shaft mechanism 20 is in the flattened and closed states, the surface of the first shoulder structure 311 facing away from the first cam structure 204 (i.e., the upper surface of the first shoulder structure 311 in Figure 32) can abut against the first rotating arm 2021, thereby creating a gap H1 between the first protrusion 41 on the first rotating arm 2021 and the first cam structure 204, as shown in Figure 30. Alternatively, when the rotating shaft mechanism 20 is in at least one preset intermediate state, the surface of the first shoulder structure 311 facing away from the first cam structure 204 can have a gap with the first rotating arm 2021, thereby creating a gap between the first protrusion 41 on the first rotating arm 2021 and the second protrusion 42 on the first cam structure 204, as shown in Figure 27.

[0170] The following examples illustrate the positional relationship between the first shoulder structure 311, the side surface of the first cam structure 204 facing away from the first cam structure 204, and the first rotating arm 2021 in different states of the rotating shaft mechanism 20. In some embodiments of this application, as shown in FIG33, a first stepped hole 50 is provided on the first rotating arm 2021 along the first direction Y, penetrating the first rotating arm 2021 (i.e., penetrating the first rotating part 20211 of the first rotating arm 2021).

[0171] Continuing as shown in Figure 33, the first stepped hole 50 may include a first through hole 501 and a second through hole 502 that are connected. The first through hole 501 may be closer to the first cam structure 204 than the second through hole 502 (as shown in Figure 32). The diameter of the first through hole 501 may be larger than the diameter of the second through hole 502. Furthermore, a first annular interface 500 is provided between the first through hole 501 and the second through hole 502.

[0172] As shown in Figure 34, the first shoulder structure 311 can be located inside the first through hole 501. The first connecting shaft 31 can be located inside the second through hole 502, and the first connecting shaft 31 can be rotatably engaged with the second through hole 502 so that the first rotating arm 2021 can rotate about the first connecting shaft 31 relative to the main shaft 201 (as shown in Figure 8).

[0173] Based on this, when the rotating shaft mechanism 20 and the display terminal 01 are in the aforementioned flattened and closed states, as shown in Figure 35 (a schematic diagram obtained by cutting along the dotted line C1-C2 in Figure 32), the side surface of the first shoulder structure 311 facing away from the first cam structure 204 (i.e., the right surface) can abut against the first annular interface 500, thereby allowing the side surface of the first shoulder structure 311 facing away from the first cam structure 204 to abut against the first rotating arm 2021. This prevents the first rotating arm 2021 from moving close to the first cam structure 204 during rotation, thus creating a gap H1 between the first protrusion 41 on the first rotating arm 2021 and the first cam structure 204, thereby canceling the damping force provided by the second damping structure 205 to the first synchronization assembly where the first rotating arm 2021 is located.

[0174] Alternatively, when the rotating shaft mechanism 20 and the display terminal 01 are in at least one preset intermediate state, as shown in Figure 36 (another schematic diagram obtained by cutting along the dotted line C1-C2 in Figure 32), the side surface of the first shoulder structure 311 facing away from the first cam structure 204 (i.e., the right surface) can have a gap H2 between it and the first annular interface 500, thereby allowing a gap between the side surface of the first shoulder structure 311 facing away from the first cam structure 204 and the first rotating arm 2021. In this way, during the rotation of the first rotating arm 2021, the first protrusion 41 on the first rotating arm 2021 can abut against the second protrusion 42 on the first cam structure 204, thereby transmitting the damping force provided by the second damping structure 205 to the first synchronization component where the first rotating arm 2021 is located.

[0175] Similarly, continuing as shown in Figure 32, when the rotating shaft mechanism 20 is in the flattened and closed states, the surface of the second shoulder structure 321 facing away from the first cam structure 204 (i.e., the upper surface) can abut against the first rotating arm 2021, the surface of the third shoulder structure 331 facing away from the first cam structure 204 (i.e., the upper surface) abuts against the first gear 2023, and the surface of the fourth shoulder structure 341 facing away from the first cam structure 204 (i.e., the upper surface) abuts against the second gear 2024. In this way, the first protrusion on the second rotating arm 2022, the first protrusion on the first gear 2023, and the first cam on the second gear 2024 all have the aforementioned gap H1 with the first cam structure 204 (as shown in Figure 35), thereby canceling the damping force provided by the second damping structure 205 to the first synchronizing assembly 202.

[0176] Alternatively, continuing as shown in Figure 32, when the rotating shaft mechanism 20 is in at least one preset intermediate state, the side surface (i.e., the upper surface) of the second shoulder structure 321 facing away from the first cam structure 204 can have the aforementioned gap H2 with the second rotating arm 2022 (as shown in Figure 36), the side surface (i.e., the upper surface) of the third shoulder structure 331 facing away from the first cam structure 204 can have a gap H2 with the first gear 2023 (as shown in Figure 36), and the side surface (i.e., the upper surface) of the fourth shoulder structure 341 facing away from the first cam structure 204 can have a gap H2 with the second gear 2024 (as shown in Figure 36). In this way, the first protrusion 41 on the first rotating arm 2021, the first protrusion 41 on the first gear 2023, and the first cam 41 on the second gear 2024 can all abut against the second protrusion 42 on the first cam structure 204, thereby transmitting the damping force provided by the second damping structure 205 to the first synchronization component 202.

[0177] Similarly, the holes in the second rotating arm 2022, the first gear 2023, and the second gear 2024 shown in Figure 32, for passing through the second connecting shaft 32, the third connecting shaft 33, and the fourth connecting shaft 34 respectively, can all be the aforementioned stepped holes. The engagement methods of the second shoulder structure 321, the third shoulder structure 331, and the fourth shoulder structure 341 located within the different stepped holes in the rotating shaft mechanism 20 under different states are similarly derived and will not be elaborated here.

[0178] Furthermore, the above illustration uses the example shown in Figure 31, where the first connecting shaft 31, the second connecting shaft 32, the third connecting shaft 33, and the fourth connecting shaft 34 are respectively provided with a first shoulder structure 311, a second shoulder structure 321, a third shoulder structure 331, and a fourth shoulder structure 341. In other embodiments of this application, the above-mentioned shoulder structures can be provided on one, two, or three of the first connecting shaft 31, the second connecting shaft 32, the third connecting shaft 33, and the fourth connecting shaft 34, which will not be described in detail here.

[0179] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A swivel mechanism (20), characterized in that The rotating shaft mechanism (20) has a flattened state, a closed state, and at least one preset intermediate state between the flattened state and the closed state; the rotating shaft mechanism (20) includes: The main shaft (201) extends along the first direction (Y); The first synchronization component (202) includes a first rotating arm (2021) and a second rotating arm (2022) that are connected by transmission; the first rotating arm (2021) and the second rotating arm (2022) are rotatably connected to the main shaft (201); the first synchronization component (202) has a first cam surface (T1); the first cam surface (T1) has at least one first protrusion (41); A first damping structure (203) is disposed on one side of the first synchronization component (202) along the first direction (Y); the first damping structure (203) abuts against the first synchronization component (202); A first cam structure (204) is located along the first direction (Y) on the side of the first synchronization component (202) away from the first damping structure (203); the first cam structure (204) has a second cam surface (T2); the second cam surface (T2) has at least one second protrusion (42); in the flattened state and the closed state, there is a gap between the first cam structure (204) and the first protrusion (41); in at least one of the preset intermediate states, the second protrusion (42) abuts against the first protrusion (41); The second damping structure (205) is disposed on the side of the first cam structure (204) away from the first synchronization component (202) along the first direction (Y), and the second damping structure (205) abuts against the first cam structure (204).

2. The rotation axis mechanism (20) according to claim 1, characterized in that The rotating shaft mechanism (20) also includes: A first connecting shaft (31) extends through the first rotating arm (2021) along the first direction (Y); the first rotating arm (2021) is rotatably connected to the first connecting shaft (31); The first shoulder structure (311) is located at one end of the first connecting shaft (31) facing the first cam structure (204) and is connected to the first connecting shaft (31); the first shoulder structure (311) is located inside the first rotating arm (2021); In the flattened state and the closed state, the side surface of the first shoulder structure (311) facing away from the first cam structure (204) abuts against the first rotating arm (2021); in at least one of the preset intermediate states, there is a gap between the side surface of the first shoulder structure (311) facing away from the first cam structure (204) and the first rotating arm (2021).

3. The rotating shaft mechanism (20) according to claim 2, characterized in that, Along the first direction (Y), a first stepped hole (50) is provided on the first rotating arm (2021) through the first rotating arm (2021); the first stepped hole (50) includes a first through hole (501) and a second through hole (502) that are connected; relative to the second through hole (502), the first through hole (501) is closer to the first cam structure (204); the diameter of the first through hole (501) is larger than the diameter of the second through hole (502); a first annular interface (500) is provided between the first through hole (501) and the second through hole (502); The first shoulder structure (311) is arranged around the first connecting shaft (31) and is located inside the first through hole (501); the first connecting shaft (31) is rotatably engaged with the second through hole (502); In the flattened state and the closed state, the side surface of the first shoulder structure (311) facing away from the first cam structure (204) abuts against the first annular interface (500); In at least one of the preset intermediate states, there is a gap between the side surface of the first shoulder structure (311) facing away from the first cam structure (204) and the first annular interface (500).

4. A swivel mechanism (20) according to claim 2 or 3, characterized in that The first connecting shaft (31) passes through the first damping structure (203), the first cam structure (204), and the second damping structure (205).

5. A swivel mechanism (20) according to any one of claims 2-4, characterized in that The rotating shaft mechanism (20) also includes: The second connecting shaft (32) extends through the second rotating arm (2022) along the first direction (Y); the second rotating arm (2022) is rotatably connected to the second connecting shaft (32); The second shoulder structure (321) is located at one end of the second connecting shaft (32) facing the first cam structure (204) and is connected to the second connecting shaft (32); the second shoulder structure (321) is located inside the second rotating arm (2022); In the flattened state and the closed state, the side surface of the second shoulder structure (321) facing away from the first cam structure (204) abuts against the second rotating arm (2022); in at least one of the preset intermediate states, there is a gap between the side surface of the second shoulder structure (321) facing away from the first cam structure (204) and the second rotating arm (2022).

6. The rotating shaft mechanism (20) according to any one of claims 2-5, characterized in that, The first synchronization component (202) further includes: A first gear (2023) is disposed between the first rotating arm (2021) and the second rotating arm (2022), and the first gear (2023) is connected to the first rotating arm (2021) in a transmission connection. The second gear (2024) is disposed between the first gear (2023) and the second rotating arm (2022), and the second gear (2024) is connected to the first gear (2023) and the second rotating arm (2022) in a transmission connection. The rotating shaft mechanism (20) also includes: A third connecting shaft (33) extends along the first direction (Y) and passes through the first gear (2023); the first gear (2023) is rotatably connected to the third connecting shaft (33); A third shoulder structure (331) is located at one end of the third connecting shaft (33) facing the first cam structure (204) and is connected to the third connecting shaft (33); the third shoulder structure (331) is located inside the first gear (2023); In the flattened state and the closed state, the side surface of the third shoulder structure (331) facing away from the first cam structure (204) abuts against the first gear (2023); in at least one of the preset intermediate states, there is a gap between the side surface of the third shoulder structure (331) facing away from the first cam structure (204) and the first gear (2023).

7. The rotation axis mechanism (20) according to claim 6, characterized in that The rotating shaft mechanism (20) also includes: A fourth connecting shaft (34) extends along the first direction (Y) through the second gear (2024); the second gear (2024) is rotatably connected to the fourth connecting shaft (34); A fourth shoulder structure (341) is located at one end of the fourth connecting shaft (34) facing the first cam structure (204) and is connected to the fourth connecting shaft (34); the fourth shoulder structure (341) is located inside the second gear (2024); In the flattened state and the closed state, the side surface of the fourth shoulder structure (341) facing away from the first cam structure (204) abuts against the second gear (2024); in at least one of the preset intermediate states, there is a gap between the side surface of the fourth shoulder structure (341) facing away from the first cam structure (204) and the second gear (2024).

8. The rotation axis mechanism (20) according to claim 7, characterized in that The first cam surface (T1) includes a first end face (S1), a second end face (S2), a third end face (S3), and a fourth end face (S4); The surface of the first rotating arm (2021) facing the first cam structure (204) is the first end face (S1), and the first end face (S1) has at least one of the first protrusions (41); The surface of the second rotating arm (2022) facing the first cam structure (204) is the second end face (S2), and the second end face (S2) has at least one of the first protrusions (41); The surface of the first gear (2023) facing the first cam structure (204) is the third end face (S3), and the third end face (S3) has at least one of the first protrusions (41); The surface of the second gear (2024) facing the first cam structure (204) is the fourth end face (S4), which has at least one of the first protrusions (41).

9. The rotation axis mechanism (20) according to claim 8, characterized in that The second cam surface (T2) includes a fifth end face (S5), a sixth end face (S6), a seventh end face (S7), and an eighth end face (S8); The first cam structure (204) includes: The first part (2041) has a surface facing the first synchronization component (202) that is the fifth end face (S5), which has at least one second protrusion (42); the vertical projection of the fifth end face (S5) onto the first cam surface (T1) coincides with the first end face (S1). The second part (2042) has a surface facing the first synchronization component (202) that is the sixth end face (S6), which has at least one second protrusion (42); the vertical projection of the sixth end face (S6) onto the first cam surface (T1) coincides with the second end face (S2); The third part (2043) has a surface facing the first synchronization component (202) that is the seventh end face (S7), which has at least one second protrusion (42); the vertical projection of the seventh end face (S7) onto the first cam surface (T1) coincides with the third end face (S3). The fourth part (2044) has a surface facing the first synchronization component (202) that is the eighth end face (S8), which has at least one second protrusion (42); the vertical projection of the eighth end face (S8) onto the first cam surface (T1) coincides with the fourth end face (S4).

10. The rotation axis mechanism (20) according to claim 9, characterized in that The first part (2041), the third part (2043), the fourth part (2044) and the second part (2042) are sequentially connected to form an integral structural component.

11. The rotating shaft mechanism (20) according to claim 9, characterized in that, Along the second direction (X), the first part (2041), the third part (2043), the fourth part (2044), and the second part (2042) are arranged sequentially; any two adjacent parts of the first part (2041), the third part (2043), the fourth part (2044), and the second part (2042) are spaced apart; the second direction (X) is perpendicular to the first direction (Y).

12. The rotating shaft mechanism (20) according to claim 9, characterized in that, Along the second direction (X), the first part (2041), the third part (2043), the fourth part (2044), and the second part (2042) are arranged in sequence; among the first part (2041), the third part (2043), the fourth part (2044), and the second part (2042), two or three adjacent parts are connected to form an integral structural component; the second direction (X) is perpendicular to the first direction (Y).

13. The rotating shaft mechanism (20) according to any one of claims 1-12, characterized in that, The first rotating arm (2021) includes a first rotating part (20211) and a first extension part (20212) connected to each other; the first rotating part (20211) is rotatably connected to the main shaft (201); the first extension part (20212) is located on the side of the first rotating part (20211) away from the main shaft (201); The second rotating arm (2022) includes a second rotating part (20221) and a second extended part (20222) connected to each other; the second rotating part (20221) is rotatably connected to the main shaft (201), and the second rotating part (20221) is drively connected to the first rotating part (20211); the second extended part (20222) is located on the side of the second rotating part (20221) away from the main shaft (201); The second damping structure (205) includes at least one set of friction structures (215), and one set of said friction structures (215) includes: The first moving friction plate (2151) is connected to the first extension portion (20212), and the first moving friction plate (2151) is rotatably connected to the main shaft (201); The second moving friction plate (2152) is connected to the second extension portion (20222), and the second moving friction plate (2152) is rotatably connected to the main shaft (201); A static friction plate (2153) is connected to the main shaft (201); the static friction plate (2153) is stacked with the first dynamic friction plate (2151) and the second dynamic friction plate (2152), and the static friction plate (2153) abuts against the first dynamic friction plate (2151) and the second dynamic friction plate (2152).

14. The rotating shaft mechanism (20) according to any one of claims 1-13, characterized in that, The first synchronization component (202) also has a third cam surface (T3) having at least one third protrusion (43); The first damping structure (203) includes: The second cam structure (2031) has a fourth cam surface (T4); the fourth cam surface (T4) has at least one fourth protrusion (44); the fourth protrusion (44) abuts against the third protrusion (43); An elastic structure (2032) is disposed along the first direction (Y) on the side of the second cam structure (2031) away from the first synchronization component (202), and the elastic structure (2032) is connected to or abuts against the second cam structure (2031); the elastic structure (2032) is in a compressed state.

15. The rotation mechanism (20) according to claim 14, characterized in that The rotating shaft mechanism (20) also includes: The second synchronization component (206) includes a third rotating arm (2061) and a fourth rotating arm (2062) that are connected by a transmission; the third rotating arm (2061) and the fourth rotating arm (2062) are rotatably connected to the main shaft (201); along the first direction (Y), the second synchronization component (206) is disposed on the side of the first damping structure (203) opposite to the first synchronization component (202); the second synchronization component (206) has a fifth cam surface (T5); the fifth cam surface (T5) has at least one fifth protrusion (45); The first damping structure (203) further includes: The third cam structure (2033) has a sixth cam surface (T6); the sixth cam surface (T6) has at least one sixth protrusion (46); the sixth protrusion (46) abuts against the fifth protrusion (45); the end of the elastic structure (2032) facing away from the second cam structure (2031) is connected to or abuts against the third cam structure (2033).

16. A display terminal (01), characterized by include: Display screen (10); First shell (11); Second shell (12); The rotating shaft mechanism (20) as described in any one of claims 1-15; the rotating shaft mechanism (20) is located between the first housing (11) and the second housing (12), and the display screen (10) is connected to the first housing (11) and the second housing (12); the display screen (10) covers the rotating shaft mechanism (20).

Images