A terminal device

Abstract

A terminal device comprises a flexible screen (2) and a screen adjusting mechanism (1). The screen adjusting mechanism (1) comprises a first frame (10), a second frame (20) and a tensioning mechanism (30); the first frame (10) and the second frame (20) are telescopically connected, one end of the flexible screen (2) is fixedly connected to the first frame (10) away from the second frame (20); the other end of the flexible screen (2) is fixedly connected to one end of the tensioning mechanism (30) around the second frame (20) away from the first frame (10), the other end of the tensioning mechanism (30) is fixedly connected to the first frame (10); when the second frame (20) and the first frame (10) are unfolded, the other end of the flexible screen (2) drives the tensioning mechanism (30) to move away from the first frame (10) to unfold the flexible screen (2); when the second frame (20) and the first frame (10) are folded, the tensioning mechanism (30) drives the other end of the flexible screen (2) to move towards the first frame (10) to fold the flexible screen (2). The screen adjusting mechanism (1) can effectively solve the problems of wrinkles, bubbles and arching of the flexible screen (2) during unfolding or folding.

Description

[0001] This application claims priority to Chinese Patent Application No. 202221385993.5, filed on June 2, 2022, with the China National Intellectual Property Administration, entitled "A Terminal Device", the entire contents of which are incorporated herein by reference. Technical Field

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

[0003] Mobile phones, tablets, and other terminal devices have gradually become an indispensable part of people's daily work and life. The screen sizes of different terminal devices vary. Due to their excellent flexibility, thinness, low power consumption, resistance to rubbing, high temperature resistance, and pressure resistance, flexible screens are widely used in the display screens of terminal devices. This makes it possible to change the screen size of terminal devices, allowing users to flexibly adjust the screen size of terminal devices during entertainment, gaming, and movie watching, thus bringing new experiences to users.

[0004] However, flexible screens are prone to problems such as wrinkles, bubbles, and arching during the unfolding or retracting process, which affects the display of terminal devices and reduces the user experience. Utility Model Content

[0005] This application provides a terminal device that can effectively solve the problems of wrinkles, bulging, and arching that occur when flexible screens are unfolded or retracted.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] This application provides a terminal device including a flexible screen and a screen adjustment structure. The screen adjustment mechanism includes a first frame, a second frame, and a tensioning mechanism. The first frame and the second frame are telescopically connected. One end of the flexible screen is fixedly connected to the end of the first frame away from the second frame. The other end of the flexible screen bypasses the second frame and is fixedly connected to one end of the tensioning mechanism away from the first frame. The other end of the tensioning mechanism is fixedly connected to the first frame. When the second frame and the first frame are unfolded, the other end of the flexible screen drives the tensioning mechanism to move away from the first frame to unfold the flexible screen. When the second frame and the first frame are retracted, the tensioning mechanism drives the other end of the flexible screen to move closer to the first frame to retract the flexible screen.

[0008] This application provides a terminal device with a tensioning mechanism in its screen adjustment mechanism. One end of the tensioning mechanism is fixedly connected to the other end of a flexible screen, and the other end is fixedly connected to a first frame. When the second and first frames unfold, the other end of the flexible screen moves the tensioning mechanism away from the first frame, thus unfolding the flexible screen. During this process, the flexible screen is in a tensioned state because it moves with the tensioning mechanism. When the second and first frames retract, the tensioning mechanism pulls the flexible screen closer to the first frame, thus closing the flexible screen. During this process, the flexible screen is also in a tensioned state. Therefore, the tensioning mechanism ensures the flexible screen remains flat during unfolding or retracting, effectively solving the problems of wrinkles, bulging, and arching that occur during the unfolding or retracting of the flexible screen.

[0009] In the terminal device provided in this application embodiment, one end of the tensioning mechanism is fixedly connected to the other end of the flexible screen, and the other end of the tensioning mechanism is fixedly connected to the first frame. The flexible screen is driven to unfold or retract by the relative unfolding or retraction of the first frame and the second frame in the screen adjustment mechanism. This can effectively avoid the occurrence of the flexible screen arching phenomenon caused by the inconsistent movement of the flexible screen with the first frame and the second frame during the unfolding or retraction process.

[0010] Optionally, the second frame and the first frame can be deployed in the following ways: the first frame is fixed and the second frame moves away from the first frame; or the second frame is fixed and the first frame moves away from the second frame; or the first frame moves away from the second frame while the second frame moves away from the first frame.

[0011] Optionally, the retraction methods of the second frame and the first frame include: the first frame is fixed and the second frame moves toward the first frame; or the second frame is fixed and the first frame moves toward the second frame; or the first frame moves toward the second frame while the second frame moves toward the first frame.

[0012] Optionally, the terminal device also includes a housing. The housing serves to protect against dust, impacts, and prevent the screen adjustment mechanism from falling and scratching, thus providing better protection for the terminal device.

[0013] In one possible implementation, the tensioning mechanism includes at least one rope, and the first frame is provided with a first protrusion corresponding to each rope at intervals in a first edge region near the second frame. The second frame is provided with a first groove corresponding to each of the first protrusions. The first protrusions are slidably connected to the corresponding first grooves, so that the first protrusions can slide in the first grooves along the stretchable direction of the first frame and the second frame.

[0014] Each of the first slide grooves has a second protrusion at one end near the first frame;

[0015] One end of the rope is fixedly connected to the corresponding first protrusion, and the other end of the rope passes around the corresponding second protrusion and is fixedly connected to the other end of the flexible screen.

[0016] In the above possible implementation, the flexible screen unfolds as the first frame and the second frame unfold. During this process, the flexible screen moves the ropes, causing the ropes to tighten the flexible screen. Due to the tension between the ropes and the flexible screen, the flexible screen remains flat during unfolding. When the first frame and the second frame retract, the retraction of the first frame and the second frame causes the ropes to move, causing the ropes to pull the flexible screen closer to the first frame, thus closing the flexible screen. During the movement of the flexible screen by the ropes, the flexible screen remains in contact with one surface of the first frame and both surfaces of the second frame, effectively avoiding the problems of wrinkles, bubbles, and arching that occur during the unfolding or closing of the flexible screen.

[0017] During the unfolding or retraction of the first and second frames, the arrangement of multiple ropes increases the contact area between the tensioning mechanism and the flexible screen, making the force on the flexible screen more uniform and reducing wrinkles, bubbling, and arching of the flexible screen during unfolding or retraction.

[0018] As one possible implementation, multiple through holes can be provided in the edge region of the other end of the flexible screen to facilitate the fixed connection between the other end of the rope and the other end of the flexible screen.

[0019] In one possible implementation, the tensioning mechanism further includes a first support rod that is slidably connected to the second frame, and the other end of the rope is fixedly connected to the other end of the flexible screen via the first support rod.

[0020] Based on the above possible embodiments, the flexible screen is fixedly connected to the first support rod, which not only increases the force-bearing area of ​​the flexible screen edge region, making the force on the flexible screen more uniform, and avoids the other end of the flexible screen being directly connected to the tensioning mechanism, thus preventing wrinkles, bubbles, and arching problems in the edge region of the flexible screen, effectively ensuring the flatness of the flexible screen during the unfolding or retraction process; but also increases the display area of ​​the flexible screen, improves the utilization efficiency of the flexible screen, reduces manufacturing costs, and extends the service life of the flexible screen.

[0021] Optionally, the first support rod includes a first sub-support rod and a second sub-support rod. One of the first and second sub-support rods has multiple grooves spaced apart, and the other has a protrusion corresponding to one of the grooves. Each protrusion engages with a corresponding groove, thus fixing the first and second sub-support rods together. This design better balances the forces between the tensioning mechanism, the support rods, and the flexible screen, preventing wrinkles, bulges, and arching of the flexible screen during unfolding or retracting due to uneven force distribution. It also avoids damage to the flexible screen and extends its lifespan.

[0022] In one possible implementation, the second boss is elastically disposed on the second frame.

[0023] Optionally, the second boss is subjected to an elastic force along the unfolding or retracting direction of the first frame and the second frame.

[0024] In one possible implementation, the tensioning mechanism further includes a first elastic member disposed between the other end of the rope and the first support rod.

[0025] Alternatively, the first elastic component may be a spring or a rubber band (e.g., an elastic band or a tension band).

[0026] In the above possible implementations, the force on each rope at each connection point in the first support rod can be balanced during thousands of expansions or contractions of the first and second frames, effectively reducing the impact of rope lengthening causing the rope to be unable to tighten the flexible screen; it can also prevent the problem of inconsistent rope lengths or inconsistent installation accuracy between ropes during rope installation, which could lead to different forces on the flexible screen. The elastic setting of the second protrusion on the second frame can keep the flexible screen flat during expansion or contraction.

[0027] In one possible implementation, a first rack is provided on the first frame, and the tensioning mechanism includes at least one gear set and a second support rod. A second rack is provided on the second support rod. The gear set is fixedly connected to the second frame, and the second support rod is fixedly connected to the other end of the flexible screen. The first rack and the second rack mesh with the gear set respectively.

[0028] The above-described possible implementations, using rack and pinion transmission, can not only improve the unfolding or retracting accuracy of the flexible screen during the unfolding or retracting of the first and second frames, thus increasing transmission efficiency; but also prevent the flexible screen from wrinkling or arching due to rope deformation caused by the long-term unfolding or retracting process, thereby improving the reliability of the overall structural design.

[0029] Optionally, the first rack can be directly manufactured from the first frame using an integral molding process, giving the structure better mechanical strength. Alternatively, the first rack can be fixed to the first frame by a fixed connection (e.g., welding).

[0030] Optionally, the second rack can be directly manufactured from the second support rod using an integral molding process to increase the mechanical strength of the structure, or the second rack can be fixed to the second support rod by a fixed connection (e.g., welding).

[0031] Optionally, the gear set can be a single-stage gear set; the gear set can also be a multi-stage gear set.

[0032] Optionally, the second support rod is slidably connected to the second frame. Sliding the second support rod onto the second frame limits its range of motion within the frame, serving as a guide and limiting element.

[0033] As one possible implementation, a groove can be provided on the second frame, and bosses can be provided at both ends of the second support rod. The bosses are slidably disposed in the groove so that the second support rod is slidably disposed on the second frame.

[0034] Optionally, the second support rod includes a first sub-support rod and a second sub-support rod. One of the first and second sub-support rods has multiple grooves spaced apart, and the other has a protrusion corresponding to one of the grooves. Each protrusion engages with a corresponding groove, thus fixing the first and second sub-support rods together. This design better balances the forces between the tensioning mechanism, the support rods, and the flexible screen, preventing wrinkles, bulges, and arching of the flexible screen during unfolding or retracting due to uneven force. It also avoids damage to the flexible screen and extends its lifespan.

[0035] In one possible implementation, the tensioning mechanism includes at least one second slide groove, a third slide groove corresponding to the second slide groove, a third support rod, and at least one connecting rod rotatably connected to the second frame. The second slide groove is disposed on the first frame. One end of the third support rod is fixedly connected to the flexible screen. The third slide groove is disposed on the third support rod. The connecting rod is provided with a third boss and a fourth boss. The third boss is slidably connected in the second slide groove, and the fourth boss is slidably connected in the third slide groove.

[0036] The first frame is provided with at least one second slide groove, and the tensioning mechanism includes a third support rod and at least one connecting rod rotatably connected to the second frame. The third support rod is provided with a third slide groove corresponding to the second slide groove, and the connecting rod is provided with a third boss and a fourth boss.

[0037] The third support rod is fixedly connected to the other end of the flexible screen;

[0038] The third boss is slidably connected in the second groove, and the fourth boss is slidably connected in the third groove.

[0039] Based on the above possible implementation methods, the tensioning mechanism can form a "scissor fork structure" so that the third or fourth protrusion can slide smoothly to a preset position and quickly unfold or retract the flexible screen as the first and second frames unfold or retract, which improves the moving efficiency and reliability of use, has a good positioning effect, and is simple and easy to implement, making it more widely applicable.

[0040] Optionally, the third support rod is slidably connected to the second frame. Sliding the third support rod onto the second frame limits its range of motion within the frame, serving as a guide and limiting element.

[0041] In one possible implementation, the tensioning mechanism further includes at least one magnet disposed between the second frame and the flexible screen.

[0042] In this possible implementation, the magnetic attraction force of the magnets ensures that the flexible screen and the second frame remain in close contact during the unfolding or retracting process, improving the flatness of the flexible screen and effectively solving the problems of wrinkles, bulging, and arching that occur during the unfolding or retracting process. Furthermore, in actual design, this possible implementation can be combined with other tensioning mechanisms provided in the embodiments of this application to further effectively prevent wrinkles, bulging, and arching of the flexible screen during unfolding or retracting, improving the overall performance of the terminal device and enhancing the user experience.

[0043] Optionally, at least one of the magnets is positioned on the surface of the second frame away from the tensioning mechanism.

[0044] Optionally, multiple rows of magnets are arranged at intervals on the surface of the second frame away from the tensioning mechanism, with adjacent rows of magnets arranged correspondingly.

[0045] In one possible implementation, the tensioning mechanism further includes a rolling shaft disposed at one end of the second frame away from the first frame, and fasteners disposed at both ends of the rolling shaft, wherein the side of the rolling shaft facing the second frame forms a first cavity with the second frame;

[0046] The surface of the rolling shaft away from the second frame is an arc surface, and the flexible screen covers the arc surface; a fifth protrusion is provided on the fastener, and the fifth protrusion is used to abut against the inner wall of the first cavity.

[0047] Based on this possible implementation, during the unfolding or retracting of the flexible screen, a supporting force can be provided for the flexible screen sliding out from the end of the second frame away from the first frame, thereby maintaining contact between the flexible screen and the second frame and effectively solving the problems of wrinkles, bulging, and arching that occur during the unfolding or retracting of the flexible screen. Furthermore, when this implementation is combined with other tensioning mechanisms provided in the embodiments of this application, wrinkles, bulging, or arching of the flexible screen can be further avoided, improving the overall performance of the terminal device.

[0048] Alternatively, fasteners may include screws, bolts, or rivets.

[0049] Alternatively, the fifth boss can be a frustum or a truncated cone.

[0050] In one possible implementation, a second elastic component is provided between the fastener and the fifth boss. In this implementation, the inclusion of the second elastic component effectively prevents the flexible screen from becoming wrinkled, bubbly, or arched during the unfolding or retraction of the flexible screen due to the rope lengthening over time or gear wear. It also eliminates installation tolerances during the assembly and maintenance of the terminal equipment, ensuring the flexible screen remains flat during unfolding or retraction.

[0051] In one possible implementation, at least one first opening is provided on the arc surface of the rolling shaft, the first opening being used to accommodate the roller. This optional approach can effectively reduce the friction between the flexible screen and the arc surface during the unfolding or retraction of the flexible screen, making the unfolding or retraction of the flexible screen smoother.

[0052] In one possible implementation, the screen adjustment mechanism further includes a transmission assembly, which includes at least one lead screw, a power linkage rotatably connected to the lead screw, and at least one drive member rotatably connected to the power linkage, wherein the lead screw is fixedly connected to the second frame.

[0053] The driving component is used to drive the power connecting rod to rotate the lead screw, and the lead screw drives the second frame and the first frame to expand or contract.

[0054] The design of using a power linkage to rotate and connect the drive component and the lead screw can effectively ensure the synchronous operation of the lead screw, so that the second frame is subjected to a more balanced traction force, which in turn makes the second frame and the first frame unfold or retract more smoothly and stably.

[0055] Alternatively, the driving element is a motor. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the disassembly structure of a terminal device provided in an embodiment of this application;

[0057] Figure 2 A schematic diagram of the structure of the first frame and the second frame in an unfolded state, provided for an embodiment of this application;

[0058] Figure 3 A schematic diagram of the structure of the first frame and the second frame in a contracted state, provided for an embodiment of this application;

[0059] Figure 4 This is a schematic diagram of the structure of the sliding connection between the first frame and the second frame provided in an embodiment of this application;

[0060] Figure 5 A schematic diagram of the structure of a mobile phone in an unfolded state, provided in an embodiment of this application;

[0061] Figure 6 A schematic diagram of the structure of a mobile phone in a retracted state, provided in an embodiment of this application;

[0062] Figure 7 A schematic diagram of the first frame and the second frame of a laptop computer in an unfolded state, provided for an embodiment of this application;

[0063] Figure 8 A schematic diagram of the structure of a laptop computer in a retracted state, provided for an embodiment of this application;

[0064] Figure 9 A simplified schematic diagram illustrating the motion relationship of the overall structural design provided for embodiments of this application;

[0065] Figure 10 This is a schematic diagram of a tensioning mechanism provided in an embodiment of this application;

[0066] Figure 11 A partially enlarged structural diagram of the first and second frames provided in the embodiments of this application after being unfolded;

[0067] Figure 12 A partially enlarged structural diagram of the first and second frames after shrinkage, as provided in an embodiment of this application;

[0068] Figure 13 This is a schematic diagram of the structure of the first support rod provided in an embodiment of this application;

[0069] Figure 14 A schematic diagram of the location of the first elastic component provided in an embodiment of this application;

[0070] Figure 15 A schematic diagram of a second boss configuration provided in an embodiment of this application;

[0071] Figure 16 Another cross-sectional structural schematic diagram of the tensioning mechanism provided in the embodiments of this application;

[0072] Figure 17a This is a schematic diagram of a scissor fork structure provided in an embodiment of this application;

[0073] Figure 17b This is another structural schematic diagram of the scissor fork structure provided in the embodiments of this application;

[0074] Figure 18 This is another structural schematic diagram of the scissor fork structure provided in the embodiments of this application;

[0075] Figure 19 Other structural schematic diagrams of the scissor fork structure provided in the embodiments of this application;

[0076] Figure 20 This is a schematic diagram of the structure of a magnet provided in an embodiment of this application;

[0077] Figure 21 Another structural schematic diagram of the tensioning mechanism provided in the embodiments of this application;

[0078] Figure 22 This is a schematic cross-sectional view of the structure after the rolling shaft is installed, as provided in an embodiment of this application.

[0079] Figure 23 An enlarged structural schematic diagram of the fastener provided in the embodiments of this application;

[0080] Figure 24This is another enlarged structural schematic diagram of the fastener provided in the embodiments of this application;

[0081] Figure 25 Other structural schematic diagrams of the screen adjustment mechanism provided in the embodiments of this application.

[0082] 1. Screen adjustment mechanism; 10. First frame; 101. First boss; 102. First rack; 103. Second slide groove;

[0083] 20. Second frame; 201. First slide groove; 202. Second boss; 203. Gear set; 204. Connecting rod; 2041. Third boss; 2042. Fourth boss;

[0084] 30. Tensioning mechanism; 301. Rope; 302. First support rod; 303. First elastic component; 304. Second support rod; 3041. Second rack; 305. Third support rod; 3051. Third groove; 306. Magnet; 307. Rolling shaft; 3071. First opening; 308. Fastener; 3081. First cavity; 3082. Fifth boss; 3083. Second elastic component;

[0085] 40. Transmission assembly; 401. Lead screw; 402. Power connecting rod; 403. Drive component.

[0086] 2. Flexible screen. Detailed Implementation

[0087] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0088] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0089] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0090] In the description of this application, it should be understood that the terms "upper", "lower", "side", "front", "rear", etc., indicate the orientation or positional relationship based on the installation orientation or positional relationship, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0091] In the description of this application, it should be noted that the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0092] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0093] Mobile phones, tablets, and other terminal devices have gradually become an indispensable part of people's daily work and life. Among them, the screen sizes of smartphones include, but are not limited to, 3.7 inches, 4.2 inches, 5.1 inches, 6.5 inches, or 7 inches; the screen sizes of tablets are 9.7 inches or 10.2 inches; and the screen sizes of laptops are 14.5 inches, 15 inches, or 21 inches. The screen sizes of different terminal devices are not exactly the same. With the continuous development of flexible screen technology, flexible screens, which have good flexibility, thinness, low power consumption, resistance to rubbing, high temperature resistance, and pressure resistance, are widely used in the display screens of terminal devices. This makes it possible for the screen size of terminal devices to be variable, allowing users to flexibly adjust the screen size of terminal devices during entertainment, gaming, and movie watching, thereby bringing new experiences to users.

[0094] However, flexible screens are prone to problems such as wrinkles, bubbles, and arching during the unfolding or retracting process, which affects the display of terminal devices and reduces the user experience.

[0095] To address the aforementioned issues, this application provides a terminal device, which includes, but is not limited to, mobile phones, personal digital assistants, tablet computers, in-vehicle computers, laptop computers, smart screens, ultra-mobile personal computers (UMPCs), wearable devices, and other electronic devices capable of mounting flexible screens. This application does not impose any limitations on these devices.

[0096] like Figure 1 The diagram shown is a disassembly structure diagram of a terminal device provided in an embodiment of this application. See also... Figure 1 The terminal device includes a screen adjustment mechanism 1 and a flexible screen 2, wherein the flexible screen 2 is capable of deformation to a certain extent. The screen adjustment mechanism 1 can flexibly adjust the screen size of the terminal device according to actual application requirements. In this embodiment, the screen adjustment mechanism 1 includes a first frame 10, a second frame 20, and a tensioning mechanism 30.

[0097] The first frame 10 and the second frame 20 are retractably connected, allowing the first frame 10 and the second frame 20 to expand or contract, such as... Figure 2 The diagram shows the structure of the first frame 10 and the second frame 20 in their unfolded state. Figure 3 The diagram shows the structure of the first frame 10 and the second frame 20 in a contracted state.

[0098] In this embodiment, the first frame 10 and the second frame 20 are two structural frames that constitute the display screen of the terminal device, thereby enabling the adjustment of the display screen size of the terminal device. For example, if the terminal device is a mobile phone (i.e., a smartphone), then the first frame 10 and the second frame 20 constitute the structural frames of the mobile phone; if the terminal device is a laptop computer, then the first frame 10 and the second frame 20 constitute the structural frames of the laptop computer's display screen.

[0099] It should be noted that, assuming the terminal device is a mobile phone, which is composed of two structural frames A and B, the first frame 10 can correspond to A and the second frame 20 to B; or the first frame 10 can correspond to B and the second frame 20 to A. This application does not limit the specific structural frames corresponding to the first frame 10 and the second frame 20.

[0100] like Figure 4 The diagram shows a retractable connection between the first frame 10 and the second frame 20. (See attached diagram) Figure 4The second frame 20 has multiple spaced grooves along the direction of expansion or contraction of the first frame 10, and one end of the second frame 20 facing the first frame 10 has an opening corresponding to the groove. The first frame 10 has a slider corresponding to the opening, allowing the first frame 10 and the second frame 20 to be retractably connected. That is, the first frame 10 can expand or contract relative to the second frame 20, or the second frame 20 can expand or contract relative to the first frame 10, or the first frame 10 and the second frame 20 can expand or contract relative to each other. In other words, the retractable connection between the first frame 10 and the second frame 20 can expand or shrink the area of ​​the terminal device in practical applications. The specific implementation of the retractable connection between the first frame 10 and the second frame 20 can be designed according to actual application requirements, and this application does not impose any limitations on it.

[0101] One end of the flexible screen 2 is fixedly connected to the end of the first frame 10 away from the second frame 20 (hereinafter referred to as the first end of the first frame 10), and the other end of the flexible screen 2 is fixedly connected to one end of the tensioning mechanism 30, bypassing the end of the second frame 20 away from the first frame 10 (hereinafter referred to as the second end of the second frame 20). The other end of the tensioning mechanism 30 is fixedly connected to the first frame 10.

[0102] In this embodiment, the first frame 10 and the second frame 20 are telescopically connected. One end of the flexible screen 2 is fixedly connected to the first end of the first frame 10. The flexible screen 2 covers the second end of the second frame 20 from the first end of the first frame 10, i.e., the upper surface of the terminal device, and bypasses the second end of the second frame 20 to be fixedly connected to one end of the tensioning mechanism 30. The other end of the tensioning mechanism 30 is fixedly connected to the first frame 10. That is, the tensioning mechanism 30 is set on the lower surface of the terminal device. In this way, the flexible screen 2 can be driven to unfold or retract by the relative unfolding or retraction of the first frame 10 and the second frame 20 in the screen adjustment mechanism 1. This effectively avoids the occurrence of wrinkles, bubbles, and arches of the flexible screen 2 due to inconsistent movement with the first frame 10 and the second frame 20 during the unfolding or retraction process.

[0103] It should be noted that, in this embodiment, the coverage length of the flexible screen 2 on the lower surface of the terminal device does not exceed the length of the second frame 20 along the unfolding or retracting direction of the flexible screen 2. In practical applications, the coverage length of the flexible screen 2 on the lower surface of the terminal device can be designed according to actual application requirements, and this application does not impose any limitations on this.

[0104] In practical applications, the fixed connection methods between one end of the flexible screen 2 and the first frame 10, and the fixed connection methods between the other end of the flexible screen 2 and the tensioning mechanism 30, include but are not limited to adhesive, bonding, or pasting.

[0105] One end of the tensioning mechanism 30 is fixedly connected to the first frame 10, and the other end is fixedly connected to one end of the flexible screen 2. The tensioning mechanism 30 is used to tighten the flexible screen 2 during the process of the first frame 10 and the second frame 20 unfolding or retracting, so as to keep the flexible screen 2 flat during the unfolding or retracting process. The structural design of the tensioning mechanism 30 is easy to implement, reducing the design difficulty of the tensioning mechanism 30 structure.

[0106] When the second frame 20 and the first frame 10 are unfolded, the other end of the flexible screen 2 drives the tensioning mechanism 30 to move away from the first frame 10 to unfold the flexible screen 2; when the second frame 20 and the first frame 10 are retracted, the tensioning mechanism 30 drives the other end of the flexible screen 2 to move closer to the first frame 10 to close the flexible screen 2.

[0107] For example, the terminal device is a mobile phone, such as Figure 5 The diagram shown is a schematic representation of the unfolded structure of a mobile phone display screen according to an embodiment of this application. Figure 6 The diagram shown is a schematic representation of the retractable mobile phone display screen provided in an embodiment of this application. (See also...) Figures 5-6 The mobile phone may include a screen adjustment structure 1 and a flexible screen 2. The screen adjustment structure 1 includes a first frame 10, a second frame 20 and a tensioning mechanism 30 (not shown in the figure), which expands or contracts the flexible screen 2 as the second frame 20 and the first frame 10 expand or contract.

[0108] For example, the terminal device is a laptop computer, such as Figure 7 The diagram shown is a schematic representation of the unfolded structure of a laptop computer display screen according to an embodiment of this application. Figure 8 The diagram shown is a schematic representation of the retractable display screen structure of a laptop computer according to an embodiment of this application. (See also...) Figures 7-8 The laptop computer may include a screen adjustment structure 1 and a flexible screen 2. The screen adjustment structure 1 includes a first frame 10, a second frame 20 and a tensioning mechanism 30 (not shown in the figure), which expands or contracts the flexible screen 2 as the second frame 20 and the first frame 10 expand or contract.

[0109] It is worth noting that in the design of the screen adjustment mechanism 1 in this embodiment, the second frame 20 can be regarded as a movable pulley, forming a structure as follows: Figure 9 The motion relationship shown is described in the following reference. Figure 9The circle represents the second frame 20, the square represents the tensioning mechanism 30, and the wall represents the first frame 10. When the second frame 20 unfolds (or retracts) relative to the first frame 10, the second frame 20 will drive the tensioning mechanism 30 to move, thereby unfolding (or retracting) the flexible screen 2. During the unfolding process of the flexible screen 2, if the first frame 10 remains relatively stationary, and the movement distance of the second frame 20 relative to the first frame 10 is L, then the movement distance of the tensioning mechanism 30, which is fixedly connected to the flexible screen 2, relative to the first frame 10 is 2L. That is to say, the length of the flexible screen 2 laid on the upper surface of the first frame 10 and the second frame 20 will increase by L along its unfolding direction.

[0110] The screen adjustment mechanism 1 of the terminal device provided in this application embodiment is provided with a tensioning mechanism 30. Since one end of the tensioning mechanism 30 is fixedly connected to the other end of the flexible screen 2 and the other end of the tensioning mechanism 30 is fixedly connected to the first frame 10, when the second frame 20 and the first frame 10 are unfolded, the other end of the flexible screen 2 drives the tensioning mechanism 30 to move away from the first frame 10 as the second frame 20 and the first frame 10 unfold, thus unfolding the flexible screen 2. During this process, the flexible screen 2 is unfolded because the flexible screen 2 drives the tensioning mechanism 30 to move, so the flexible screen 2 is in a tensioned state during the unfolding process. When the second frame 20 and the first frame 10 are contracted, the tensioning mechanism 30 pulls the flexible screen 2 to move closer to the first frame 10 as the second frame 20 and the first frame 10 contract, thus closing the flexible screen 2. During this process, the flexible screen 2 is closed because the tensioning mechanism 30 pulls the flexible screen 2 to move closer to the first frame 10, so the flexible screen 2 is also in a tensioned state during the closing process. Therefore, the aforementioned tensioning mechanism 30 can keep the flexible screen 2 flat during the unfolding or retraction process, effectively solving the problems of wrinkles, bubbling, and arching that occur during the unfolding or retraction of the flexible screen 2.

[0111] In one possible implementation, such as Figure 10 A schematic diagram of the tensioning mechanism 30 is shown below. (See also...) Figure 10 The tensioning mechanism 30 includes at least one rope 301. The first frame 10 is provided with first protrusions 101 corresponding to each rope 301 at intervals in the first edge area near the second frame 20. The second frame 20 is provided with first grooves 201 corresponding to each first protrusion 101. The first protrusions 101 are slidably connected to the corresponding first grooves 201, so that the first protrusions 101 can slide in the first grooves 201 along the telescoping direction of the first frame 10 and the second frame 20. Each first groove 201 is provided with a second protrusion 202 at one end near the first frame 10. One end of the rope 301 is fixedly connected to the corresponding first protrusion 101, and the other end of the rope 301 passes around the corresponding second protrusion 202 and is fixedly connected to the other end of the flexible screen 2.

[0112] It should be understood that the first groove 201 is used to limit the range of motion of the first boss 101, which is fixedly connected to the rope 301.

[0113] like Figure 11 The diagram shown is a partially enlarged structural illustration of the first frame 10 and the second frame 20 provided in the embodiments of this application after unfolding. See also: Figure 11 When the second frame 20 and the first frame 10 unfold, the second frame 20 drives the flexible screen 2 to unfold, and the rope 301 tightens the flexible screen 2 to keep it flat during the unfolding process; Figure 12 The diagram shown is a partially enlarged structural illustration of the first frame 10 and the second frame 20 after shrinkage, according to an embodiment of this application. (See attached diagram.) Figure 12 When the second frame 20 and the first frame 10 retract, the second boss 202 drives the rope 301 to retract the flexible screen 2 (not shown in the figure).

[0114] It should be understood that the number of first protrusions 101 on the first frame 10, the number of first grooves 201 and the number of second protrusions 202 on the second frame 20 correspond to the number of ropes 301, so that the flexible screen 2 is subjected to more uniform force. For example, assuming that the number of ropes 301 can be set to 5, then 5 first protrusions 101 are spaced apart in the first edge area of ​​the first frame 10 near the second frame 20, and 5 first grooves 201 and 5 second protrusions 202 corresponding to the first protrusions 101 are set on the second frame 20. In practical applications, the corresponding number of ropes 301, first protrusions 101, first grooves 201 and second protrusions 202 can be set according to the actual screen size of the terminal device. This application does not impose any limitations on this.

[0115] In the above possible implementation, the flexible screen 2 unfolds as the first frame 10 and the second frame 20 unfold. During this process, the flexible screen 2 moves the rope 301, which tightens the flexible screen 2. The tension between the rope 301 and the flexible screen 2 keeps the flexible screen 2 flat during unfolding. When the first frame 10 and the second frame 20 retract, the retraction of the first frame 10 and the second frame 20 moves the rope 301, causing the rope 301 to pull the flexible screen 2 towards the first frame 10, thus closing the flexible screen 2. During the movement of the flexible screen 2 by the rope 301, the flexible screen 2 remains in contact with one surface of the first frame 10 and both surfaces of the second frame 20, effectively avoiding wrinkles, bubbles, and arching of the flexible screen 2 during unfolding or retraction.

[0116] As one possible implementation, multiple through holes can be provided in the edge region of the other end of the flexible screen 2 so that the other end of the rope 301 can be fixedly connected to the other end of the flexible screen 2.

[0117] During the unfolding or retraction of the first frame 10 and the second frame 20, the arrangement of multiple ropes 301 can increase the contact area between the tensioning mechanism 30 and the flexible screen 2, making the force on the flexible screen 2 more uniform and reducing wrinkles, bubbling, and arching of the flexible screen 2 during unfolding or retraction.

[0118] In one possible implementation, the tensioning mechanism 30 further includes a first support rod 302, which is slidably connected to the second frame 20, and the other end of the rope 301 is fixedly connected to the other end of the flexible screen 2 through the first support rod 302.

[0119] In this way, the flexible screen 2 is fixedly connected to the first support rod 302, which not only increases the force-bearing area of ​​the edge region of the flexible screen 2, making the force on the flexible screen 2 more uniform, and avoids the other end of the flexible screen 2 being directly connected to the tensioning mechanism 30, which would cause wrinkles, bubbles, and arching problems in the edge region of the flexible screen 2, but also effectively ensures the flatness of the flexible screen 2 during the unfolding or retraction process; it also increases the display area of ​​the flexible screen 2, improves the utilization efficiency of the flexible screen 2, reduces manufacturing costs, and extends the service life of the flexible screen 2.

[0120] like Figure 13 The diagram shown is a structural schematic of a support rod provided in an embodiment of this application. (See also...) Figure 13 The first support rod 302 includes a first sub-support rod and a second sub-support rod. One of the first and second sub-support rods has multiple grooves, and the other has multiple protrusions. Each protrusion engages with a corresponding groove to securely connect the first and second sub-support rods together. Both ends of the first support rod 302 are slidably connected to the second frame 20, limiting its range of motion within the second frame 20 and serving a limiting and guiding function.

[0121] Based on the above embodiments, the other end of the flexible screen 2 bypasses the end of the second frame 20 away from the first frame 10 and is fixedly connected to the first support rod 302. This avoids the other end of the flexible screen 2 being directly connected to the tensioning mechanism 30, which would cause wrinkles or arching in the edge area of ​​the flexible screen 2. It increases the force-bearing area of ​​the edge area of ​​the flexible screen 2, making the force more uniform, effectively ensuring the flatness of the flexible screen 2 during the unfolding or retraction process, and extending the service life of the flexible screen 2.

[0122] Based on the above possible embodiments, during repeated use of the terminal device, the length of the rope 301 may increase due to the repeated unfolding and retraction of the flexible screen 2. In another possible implementation, such as... Figure 14 The diagram shown is a structural schematic of one possible location for the first elastic member 303 provided in an embodiment of this application. See also... Figure 14 The tensioning mechanism 30 also includes a first elastic component 303, which is disposed between the first support rod 302 and the rope 301. Specifically, one end of the rope 301 is fixedly connected to the first boss 101 on the first frame 10, and the other end passes around the second boss 202 on the second frame 20 and is fixedly connected to one end of the first elastic component 303. The other end of the first elastic component 303 is fixedly connected to the first support rod 302.

[0123] In the above possible implementations, the force on each rope 301 at each connection point in the first support rod 302 can be balanced during the tens of thousands of unfolding or retraction of the first frame 10 and the second frame 20, effectively reducing the impact of the rope 301 becoming too long and unable to tighten the flexible screen 2; it can also prevent the problem of inconsistent lengths of multiple ropes 301 or inconsistent installation accuracy between multiple ropes 301 during the installation process, which would cause different forces on the flexible screen 2.

[0124] Optionally, the first elastic component 303 may include, but is not limited to, springs or elastic bands (such as rubber bands or elastic bands) that can provide the required elasticity so that the flexible screen 2 remains flat during unfolding or retraction.

[0125] In practical applications, to further provide richer design options, other possible implementation methods, such as Figure 15 The diagram shown is another structural schematic of the second boss 202 provided in the embodiment of this application. See also... Figure 15 The second protrusion 202 is elastically disposed on the second frame 20. The elastic component can be the first elastic component 303 in the above embodiment, providing more options for the placement of the first elastic component 303.

[0126] It should be understood that in this embodiment, the second protrusion 202 is subjected to elastic force along the unfolding or retracting direction of the first frame 10 and the second frame 20. This method facilitates the actual installation of the second protrusion 202, improves installation efficiency, and also makes reasonable use of the space on the second frame 20.

[0127] In one possible implementation, one end of the elastic member is fixedly connected to the second frame 20, and the other end of the elastic member is fixedly connected to the second boss 202. To facilitate the installation of the rope 301, corresponding cavities for accommodating the rope 301 can be provided on the first boss 101 and the second boss 202. Therefore, the elastic arrangement of the second boss 202 on the second frame 20 can be configured according to the application, and this application does not limit this.

[0128] In one possible implementation, such as Figure 16The diagram shown is a cross-sectional view of another tensioning mechanism 30 provided in an embodiment of this application. See also... Figure 16 The first frame 10 is provided with a first rack 102, and the tensioning mechanism 30 includes at least one gear set 203 and a second support rod 304. The second support rod 304 is provided with a second rack 3041. The gear set 203 is fixedly connected to the second frame 20, and the second support rod 304 is fixedly connected to the other end of the flexible screen 2. The first rack 102 and the second rack 3041 respectively mesh with the gear set 203.

[0129] Optionally, the first rack 102 can be directly manufactured with the first frame 10 using an integral molding process, resulting in better mechanical strength. Alternatively, the first rack 102 can be fixed to the first frame 10 by a fixed connection (e.g., welding). Similarly, the second rack 3041 can be directly manufactured with the second support rod 304 using an integral molding process, increasing the mechanical strength of the structure. Alternatively, the second rack 3041 can be fixed to the second support rod 304 by a fixed connection (e.g., welding). This application does not limit the arrangement of the first rack 102 and the first frame 10, or the arrangement of the second rack 3041 and the second support rod 304.

[0130] Optionally, in the actual design process, gear set 203 can be a single-stage gear set, see [reference]. Figure 16 The gear set 203 can also be a multi-stage gear set, and this application does not impose any limitations on it. According to different actual use requirements, the number of teeth of each gear in the gear set 203, the number of teeth of the first rack 102, and the number of teeth of the second rack 3041 can be adjusted as needed.

[0131] To improve the feasibility of the specific structural design in practical applications, the gear set 203 may optionally be located at the middle position of the second frame 20, which is located between the edge region of the second frame 20 near the first frame 10 and the edge region of the second frame 20 away from the first frame 10.

[0132] Optionally, both ends of the second support rod 304 are slidably disposed on the second frame 20. Sliding the second support rod 304 on the second frame 20 can limit the range of motion of the second support rod 304 on the second frame 20, serving as a guide and limiting function. For example, a groove can be provided on the second frame 20, and bosses can be provided at both ends of the second support rod 304, with the bosses slidably disposed in the groove, so that the second support rod 304 is slidably disposed on the second frame 20.

[0133] It should be understood that the structural design of the second support rod 304 in this embodiment can be referenced. Figure 13The structure of the first support rod 302 shown has been described in the previous embodiments and will not be repeated here.

[0134] It should be understood that if the second frame 20 is stretched or retracted relative to the first frame 10, the displacement of the second support rod 304 relative to the first frame 10 is equal to twice the displacement of the second frame 20 relative to the first frame 10.

[0135] The above-described possible implementations, using rack and pinion transmission, can not only improve the unfolding accuracy or retraction accuracy of the flexible screen 2 during the unfolding or retraction of the first frame 10 and the second frame 20, thus improving transmission efficiency; but also prevent the flexible screen 2 from wrinkling or arching due to the deformation of the rope 301 caused by the long-term unfolding or retraction process of the flexible screen 2, thereby improving the reliability of the overall structural design.

[0136] In another possible implementation, the first frame 10 is provided with at least one second slide groove 103, and the tensioning mechanism 30 includes a third support rod 305 and at least one connecting rod 204 rotatably connected to the second frame 20. The third support rod 305 is provided with a third slide groove 3051 corresponding to the second slide groove 103, and the connecting rod 204 is provided with a third boss 2041 and a fourth boss 2042. The third support rod 305 is fixedly connected to the other end of the flexible screen 2. The third boss 2041 is slidably connected in the second slide groove 103, and the fourth boss 2042 is slidably connected in the third slide groove 3051.

[0137] Optionally, the third support rod 305 is slidably connected to the second frame 20. Sliding the third support rod 305 onto the second frame 20 can limit the range of motion of the third support rod 305 on the second frame 20, thus serving as a guide and limiting element.

[0138] In the actual design process, the number of second slide groove 103, third slide groove 3051 and connecting rod 204 are corresponding.

[0139] For example, such as Figure 17a The diagram shown is a structural schematic of a scissor fork structure provided in an embodiment of this application. See also... Figure 17aA second slide groove 103 is provided in the edge area of ​​the first frame 10 near the second frame 20. A third slide groove 3051 corresponding to the second slide groove 103 is provided on the third support rod 305. Two connecting rods 204 of equal length are rotatably provided on the second frame 20. One end of the two connecting rods 204 is provided with a third protrusion 2041 and a fourth protrusion 2042, respectively. The other end is rotatably provided on the first frame 10 and the third support rod 305, respectively, so that the third protrusion 2041 is slidably provided in the second slide groove 103 and the fourth protrusion 2042 is slidably provided in the third slide groove 3051. When the third protrusion 2041 slides in the second slide groove 103 toward the first direction, the fourth protrusion 2042 also slides in the third slide groove 3051 toward the first direction, so that the third support rod 305 drives the flexible screen 2 to unfold or retract.

[0140] like Figure 17b The image shown is provided in an embodiment of this application. Figure 17a See another structural diagram. Figure 17b A second slide groove 103 is provided in the edge area of ​​the first frame 10 near the second frame 20. A third slide groove 3051 corresponding to the second slide groove 103 is provided on the third support rod 305. Two connecting rods 204 of equal length are rotatably provided on the second frame 20. One end of the two connecting rods 204 is provided with a third boss 2041 and a fourth boss 2042, respectively. The other end is provided on the second frame 20 by a hinge connection, so that the third boss 2041 is slidably disposed in the second slide groove 103 and the fourth boss 2042 is slidably disposed in the third slide groove 3051. When the third boss 2041 slides in the second slide groove 103 toward the first direction, the fourth boss 2042 also slides in the third slide groove 3051 toward the first direction, so that the third support rod 305 drives the flexible screen 2 to unfold or retract.

[0141] As an example, and not a limitation, such as Figure 18 The diagram shown is another structural schematic of the scissor fork structure provided in this application embodiment. See also... Figure 18Two second sliding grooves 103 are spaced apart in the edge region of the first frame 10 near the second frame 20. Two third sliding grooves 3051 corresponding to the second sliding grooves 103 are provided on the third support rod 305. Two connecting rods 204 of equal length are rotatably arranged on the second frame 20. The two connecting rods 204 have the same rotation axis. Each connecting rod 204 has a third boss 2041 and a fourth boss 2042 at its two ends, so that the third boss 2041 is slidably disposed in the second sliding groove 103 and the fourth boss 2042 is slidably disposed in the third sliding groove 3051. When the third boss 2041 slides in the second sliding groove 103 toward the first direction, the fourth boss 2042 slides in the third sliding groove 3051 toward the second direction, so that the third support rod 305 drives the flexible screen 2 to unfold or retract. The first direction and the second direction are two opposite directions.

[0142] It should be noted that when the number of connecting rods 204 includes at least two, the at least two connecting rods 204 can be arranged around the same axis of rotation; or they can be arranged as follows: Figure 19 The diagram shown is a schematic diagram of another structure of the scissor fork structure provided in the embodiments of this application. See also... Figure 19 Each link 204 is provided with a corresponding rotation axis, forming at least two rotation axes. The at least two rotation axes are located on the same straight line of the second frame 20, and the direction of the straight line is perpendicular to the direction of the flexible screen 2 unfolding or retracting.

[0143] Optionally, the connecting rod 204 can be rotatably connected to the second frame 20 via a pin. This application embodiment does not limit the manner, number, or position of the connecting rod 204 on the second frame 20.

[0144] It is easy to understand that, in the above-described possible embodiments of the tensioning mechanism 30, a first elastic member 303 may also be provided to further improve the movement accuracy. The specific installation position of the first elastic member 303 can be designed according to the actual application, and this application does not impose any limitations on it.

[0145] Based on the above possible implementation methods, the tensioning mechanism 30 can form a "scissor fork structure" so that the third protrusion 2041 or the fourth protrusion 2042 can slide smoothly to a preset position and quickly expand or retract the flexible screen 2 as the first frame 10 and the second frame 20 expand or retract, which improves the moving efficiency and reliability of use, has a good positioning effect, and is simple and easy to implement, and has a wider range of practical applications.

[0146] In another possible implementation, the tensioning mechanism 30 also includes at least one magnet 306 disposed between the second frame 20 and the flexible screen 2.

[0147] Optionally, at least one magnet 306 may be disposed on the surface of the second frame 20 away from the tensioning mechanism 30, that is, on the first plane of the second frame 20, i.e. the upper surface of the terminal device, to facilitate assembly and thereby improve assembly efficiency.

[0148] At least one magnet 306 may also be disposed on the second plane of the second frame 20, i.e. the lower surface of the terminal device; at least one magnet 306 may also be disposed on both the first plane and the second plane of the second frame 20, and this application does not limit this.

[0149] The number and size of the magnets 306 can be designed according to the actual application. To improve the flatness of the flexible screen 2, optionally, as... Figure 20 The diagram shown is a schematic representation of the arrangement structure of a magnet 306 according to an embodiment of this application. (See also...) Figure 20 Multiple rows of magnets 306 are arranged at intervals on the first plane of the second frame 20, with adjacent rows of magnets 306 arranged correspondingly.

[0150] According to experiments, when two rows of magnets 306 are arranged at intervals on the first plane of the second frame 20, and the two rows of magnets 306 are arranged in a corresponding manner, the problems of wrinkles, bubbles and arches that occur during the unfolding or retraction of the flexible screen 2 can be effectively avoided.

[0151] On the one hand, this optional implementation simplifies the structural design of the tensioning mechanism 30, enabling rapid tensioning of the flexible screen 2 in actual design, reducing the design difficulty of the tensioning mechanism 30, and effectively shortening the design time of the structure. On the other hand, in this possible implementation, during the unfolding or retracting process of the flexible screen 2, the magnetic attraction force of the magnet 306 ensures that the flexible screen 2 and the second frame 20 remain in close contact, improving the flatness of the flexible screen 2 and effectively solving the problems of wrinkles, bubbling, and arching that occur during the unfolding or retracting process. Furthermore, in actual design, this possible implementation can be combined with other tensioning mechanisms 30 provided in the embodiments of this application to further effectively prevent wrinkles, bubbling, and arching of the flexible screen 2 during unfolding or retracting, improving the overall performance of the terminal device and enhancing the user's actual user experience.

[0152] In other possible implementations, such as Figure 21 The diagram shown is another structural schematic of the tensioning mechanism 30 provided in the embodiment of this application, as follows: Figure 22 The diagram shown is a cross-sectional view of the structure after the rolling shaft 307 is installed according to an embodiment of this application. Figure 23 The diagram shown is an enlarged structural schematic of the fastener 308 provided in an embodiment of this application. See also... Figures 21-23The tensioning mechanism 30 includes a rolling shaft 307 located at one end of the second frame 20 away from the first frame 10 and fasteners 308 located at both ends of the rolling shaft 307. A first cavity 3081 is formed between the side of the rolling shaft 307 facing the second frame 20 and the second frame 20. The surface of the side of the rolling shaft 307 away from the second frame 20 is an arc surface, and the flexible screen 2 covers the arc surface. A fifth protrusion 3082 is provided at one end of the fastener 308, and the fifth protrusion 3082 is used to abut against the inner wall of the first cavity 3081.

[0153] In the actual design process, the length of the rolling shaft 307 along the axial direction corresponds to the size of the second frame 20.

[0154] Optionally, fastener 308 includes, but is not limited to, screws, bolts, or rivets.

[0155] Optionally, the fifth protrusion 3082 can be a frustum or a truncated cone. One of the bottom surfaces of the fifth protrusion 3082 is fixedly connected to the fastener 308. When the fastener 308 is fastened to the rolling shaft 307, the side of the fifth protrusion 3082 abuts against the inner wall of the first cavity 3081, so that the curved surface is subjected to compressive or supporting force, so that the flexible screen 2 can maintain contact with the curved surface during the unfolding or retracting process.

[0156] Optionally, such as Figure 24 The diagram shown is another structural schematic of the fastener 308 provided in an embodiment of this application. See also... Figure 24 A second elastic member 3083 may be provided between the fastener 308 and the fifth boss 3082. The second elastic member 3083 may be a spring or a rubber band (e.g., an elastic band or a band).

[0157] In this possible implementation, the provision of the second elastic component 3083 can effectively prevent the flexible screen 2 from becoming wrinkled, bubbly, or arched during the unfolding or retraction of the flexible screen 2 due to the increased length of the rope 301 caused by its extended service life, or due to gear wear over a long period of time, which could prevent the flexible screen 2 from being stretched too much during the unfolding or retraction of the first frame 10 and the second frame 20. It can also eliminate installation tolerances during the assembly and maintenance of the terminal equipment, ensuring that the flexible screen 2 remains flat during unfolding or retraction.

[0158] In one possible implementation, see Figure 21At least one first opening 3071 is provided on the arc surface of the rolling shaft 307, and the first opening 3071 is used to accommodate the roller. The specific number of first openings 3071 can be set according to the thickness of the terminal device. Compared with the structural design without first openings 3071 on the arc surface, this optional method can effectively reduce the friction between the flexible screen 2 and the arc surface during the unfolding or retraction of the flexible screen 2, making the unfolding or retraction of the flexible screen 2 smoother.

[0159] Optionally, the rollers are rotatably disposed in the first opening 3071 of the rolling shaft 307. The number of first openings 3071 corresponds to the number of rollers.

[0160] In this embodiment, the expansion and contraction between the first frame 10 and the second frame 20 can be triggered manually or automatically. The automatic triggering method is achieved through the transmission component 40 of the screen adjustment mechanism 1. In another possible implementation, such as... Figure 25 The diagram shown is a schematic diagram of another structure of the screen adjustment mechanism 1 provided in the embodiment of this application. See also... Figure 25 The screen adjustment mechanism 1 also includes a transmission assembly 40, which includes at least one lead screw 401, a power connecting rod 402 rotatably connected to the lead screw 401, and at least one drive member 403 rotatably connected to the power connecting rod 402. The lead screw 401 is fixedly connected to the second frame 20, and the drive member 403 is used to drive the power connecting rod 402 to rotate the lead screw 401. The lead screw 401 drives the second frame 20 and the first frame 10 to unfold or retract, thereby realizing the unfolding or retraction of the flexible screen 2.

[0161] Alternatively, the drive element 403 may be a motor.

[0162] In this embodiment, the transmission assembly 40 includes two motors, a power connecting rod 402, and two lead screws 401. The two ends of the power connecting rod 402 are rotatably connected to the lead screws 401. The motors are used to drive the power connecting rod 402 to rotate the lead screws 401. The lead screws 401 drive the second frame 20 and the first frame 10 to unfold or retract, so that the flexible screen 2 unfolds or retracts.

[0163] In practical applications, multiple motors can be directly connected to the corresponding lead screw 401 for rotation, and then a corresponding synchronous driver program can be designed so that multiple motors synchronously drive the corresponding lead screw 401 to drive the second frame 20 and the first frame 10 to unfold or retract, thereby realizing the unfolding or retraction of the flexible screen 2.

[0164] It is easy to understand that the number and position of the drive component 403 and the lead screw 401 in the transmission assembly 40 of different terminal devices can be set according to different actual applications, and this application does not limit this.

[0165] The design described above, which uses a power linkage 402 to rotatably connect multiple drive components 403 and multiple lead screws 401, can effectively ensure the synchronous operation of multiple lead screws 401, so that the second frame 20 is subjected to a more balanced traction force, which in turn makes the second frame 20 and the first frame 10 unfold or retract more smoothly and stably.

[0166] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology 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 terminal device, characterized in that, It includes a flexible screen and a screen adjustment mechanism. The screen adjustment mechanism includes a first frame, a second frame, and a tensioning mechanism, wherein the tensioning mechanism includes a first tensioning mechanism and a second tensioning mechanism. The first frame and the second frame are telescopically connected. One end of the flexible screen is fixedly connected to the end of the first frame away from the second frame. The other end of the flexible screen bypasses the second frame and is fixedly connected to one end of the first tensioning mechanism. The other end of the first tensioning mechanism is fixedly connected to the first frame. When the second frame and the first frame are unfolded, the other end of the flexible screen drives the first tensioning mechanism to move away from the first frame in order to unfold the flexible screen; When the second frame and the first frame retract, the first tensioning mechanism drives the other end of the flexible screen to move closer to the first frame in order to close the flexible screen. The second tensioning mechanism includes a rolling shaft disposed at one end of the second frame away from the first frame, and fasteners disposed at both ends of the rolling shaft, wherein the side of the rolling shaft facing the second frame forms a first cavity with the second frame; The surface of the rolling shaft away from the second frame is an arc surface, and the flexible screen covers the arc surface; the fastener is provided with a fifth protrusion, which is used to abut against the inner wall of the first cavity; After the fastener is secured to the rolling shaft, the side of the fifth protrusion abuts against the inner wall of the first cavity, causing the arc surface to be subjected to compressive or supporting force, so that the flexible screen remains in contact with the arc surface during the unfolding or retracting process.

2. The device according to claim 1, characterized in that, The first tensioning mechanism includes at least one rope. The first frame is provided with a first protrusion corresponding to each rope at intervals in the first edge area near the second frame. The second frame is provided with a first groove corresponding to each first protrusion. The first protrusion is slidably connected to the corresponding first groove, so that the first protrusion can slide in the first groove along the stretchable direction of the first frame and the second frame. Each of the first slide grooves has a second protrusion at one end near the first frame; One end of the rope is fixedly connected to the corresponding first protrusion, and the other end of the rope passes around the corresponding second protrusion and is fixedly connected to the other end of the flexible screen.

3. The device according to claim 2, characterized in that, The first tensioning mechanism further includes a first support rod, which is slidably connected to the second frame. The other end of the rope is fixedly connected to the other end of the flexible screen via the first support rod.

4. The device according to claim 2 or 3, characterized in that, The second boss is elastically disposed on the second frame.

5. The device according to claim 3, characterized in that, The first tensioning mechanism further includes a first elastic component disposed between the other end of the rope and the first support rod.

6. The device according to claim 1, characterized in that, The first frame is provided with a first rack, and the first tensioning mechanism includes at least one gear set and a second support rod, on which a second rack is provided. The gear set is fixedly connected to the second frame; The second support rod is fixedly connected to the other end of the flexible screen; The first rack and the second rack respectively mesh with the gear set.

7. The device according to claim 6, characterized in that, The second support rod is slidably connected to the second frame.

8. The device according to claim 1, characterized in that, The first frame is provided with at least one second slide groove, and the first tensioning mechanism includes a third support rod and at least one connecting rod rotatably connected to the second frame. The third support rod is provided with a third slide groove corresponding to the second slide groove, and the connecting rod is provided with a third boss and a fourth boss. The third support rod is fixedly connected to the other end of the flexible screen; The third boss is slidably connected in the second groove, and the fourth boss is slidably connected in the third groove.

9. The device according to claim 8, characterized in that, The third support rod is slidably connected to the second frame.

10. The device according to any one of claims 2-9, characterized in that, The first tensioning mechanism also includes at least one magnet, which is disposed between the second frame and the flexible screen.

11. The device according to any one of claims 1-10, characterized in that, A second elastic component is provided between the fastener and the fifth boss.

12. The device according to any one of claims 1-11, characterized in that, At least one first opening is provided on the arc surface of the rolling shaft, the first opening being used to accommodate the roller.

13. The device according to any one of claims 1-12, characterized in that, The screen adjustment mechanism further includes a transmission assembly, which includes at least one lead screw, a power connecting rod rotatably connected to the lead screw, and at least one driving component rotatably connected to the power connecting rod. The lead screw is fixedly connected to the second frame. The driving component is used to drive the power connecting rod to rotate the lead screw, and the lead screw drives the second frame and the first frame to expand or contract.

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