Rotating mechanism and foldable display terminal

Abstract

The embodiment of the application discloses a rotating mechanism and a foldable display terminal, and relates to the field of electronic products. The rotating mechanism comprises a base and two door plate assemblies located on opposite sides of the base. The door plate assembly comprises a door plate body, the door plate body is provided with a first arc-shaped sliding groove, the base comprises a first sliding block matched with the first arc-shaped sliding groove, and the first sliding block is installed in the first arc-shaped sliding groove. At least one door plate assembly further comprises a first extrusion piece, the first extrusion piece is installed on the base, the first extrusion piece extrudes the door plate body along a first target direction, the first target direction is perpendicular to the sliding direction of the first sliding block, and the first target direction points to one side wall of the first arc-shaped sliding groove facing the first sliding block. Through the above arrangement, the first extrusion piece has an extrusion effect on the door plate body, the first extrusion piece can extrude the door plate body to one side wall of the first arc-shaped sliding groove, so that the matching gap between the first sliding block and the first arc-shaped sliding groove is reduced, and the phenomenon of shaking during use of the rotating mechanism is improved.

Description

Technical Field

[0001] This application relates to the field of electronic products, and more particularly to a rotating mechanism and a foldable display terminal. Background Technology

[0002] With the commercialization of flexible display screens, foldable flexible screen smartphones, foldable flexible screen tablets, and wearable electronic devices with foldable flexible screens represent a significant evolutionary direction for future smart terminal devices. Foldable display terminals, when unfolded, offer a larger display area, enhancing the viewing experience. When folded, they achieve a smaller size, making them easier for users to carry.

[0003] The foldable display terminal includes at least a flexible screen, two structural components for supporting the flexible screen, and a rotating mechanism. The two structural components are connected to both sides of the rotating mechanism. In actual use, the rotating mechanism drives the two structural components to rotate, allowing the foldable display terminal to be in a folded, suspended, or unfolded state. However, in related technologies, the rotating mechanism may wobble, potentially causing the structural components of the foldable display terminal to wobble. Summary of the Invention

[0004] The purpose of this application is to provide a rotating mechanism and a foldable display terminal to improve the wobbling situation of the rotating mechanism in the related art.

[0005] To achieve the above objectives, the embodiments of this application provide the following solutions:

[0006] A rotating mechanism is provided, including a base and two door panel assemblies located on opposite sides of the base. Each door panel assembly includes a door panel body having a first arc-shaped groove. The base includes a first slider that mates with the first arc-shaped groove, and the first slider is installed within the first arc-shaped groove. With this configuration, the base and door panel assemblies can rotate relative to each other, thereby allowing the rotating mechanism to fold or unfold.

[0007] Based on the above structure, at least one door panel assembly further includes a first pressing member, which is mounted on the base. The first pressing member presses the door panel body along a first target direction, which is perpendicular to the sliding direction of the first slider and points towards one sidewall of the first arc-shaped groove facing the first slider. Here, the sliding direction of the first slider is also the extending direction of the first arc-shaped groove. With the above arrangement, the first pressing member has a pressing effect on the door panel body, and can press the door panel body against one sidewall of the first arc-shaped groove, thereby reducing the gap between the two opposite sidewalls of the first arc-shaped groove and the first slider. That is, the fitting gap between the first slider and the first arc-shaped groove is reduced, which helps to improve the shaking phenomenon of the rotating mechanism during use.

[0008] In some embodiments, the first pressing member includes an elastic sheet connected to the base and in elastic contact with the door panel body. Because the elastic sheet can undergo elastic deformation, its elastic restoring force is applied to the door panel body along a first target direction, reducing the clearance between the first slider and the first arc-shaped groove, thereby improving the wobbling phenomenon of the rotating mechanism during use. Simultaneously, because the elastic sheet can undergo elastic deformation, there is elastic contact between the elastic sheet and the first slider, preventing the first slider from jamming during rotation.

[0009] In some embodiments, the base further includes a first mounting groove, the sidewall of which protrudes to form a first slider; the door panel body includes a side surface and a bottom surface, the side surface facing the sidewall of the first mounting groove and recessed to form a first arc-shaped sliding groove, the bottom surface facing the bottom wall of the first mounting groove, and an elastic sheet located between the bottom wall and the bottom surface of the first mounting groove. This arrangement avoids the first pressing member occupying space outside the base, thus improving the structural compactness and miniaturizing the rotating mechanism.

[0010] In some embodiments, the elastic plate includes a first elastic arm and a second elastic arm, which are connected together, and the included angle between the first and second elastic arms is an obtuse angle. One of the first and second elastic arms is in elastic contact with the door panel body. When the first elastic arm is in elastic contact with the door panel body, it can compress the door panel body, while the second elastic arm can act as a buffer to reduce the clearance between the first slider and the first arc-shaped groove, thereby improving the shaking phenomenon of the rotating mechanism during use.

[0011] In some embodiments, one end of the elastic arm opposite to the other elastic arm has a mounting hole, the sidewall of the first mounting groove has a mating hole, and the first pressing member further includes a pin, which passes through the mounting hole and the mating hole. With the above arrangement, the elastic sheet can rotate relative to the pin, thereby achieving a rotatable connection between the elastic sheet and the base, which helps to improve the buffering effect of the elastic sheet and further prevents the rotating mechanism from jamming during rotation.

[0012] In some embodiments, the system further includes two fixed supports located on opposite sides of the base. Each fixed support has a second arc-shaped groove, and the door panel assembly also includes a second slider that mates with the second arc-shaped groove. The central axis of the second arc-shaped groove is parallel to the central axis of the first arc-shaped groove. With this configuration, the fixed supports and the door panel assembly can rotate relative to each other, thereby causing the structural member connected to the fixed supports to rotate relative to the door panel assembly.

[0013] Based on the above structure, at least one door panel assembly further includes a second pressing member, which is mounted on a fixed bracket. The second pressing member presses the second slider along a second target direction, which is perpendicular to the sliding direction of the second slider and points towards a side wall of the second arc-shaped groove facing the second slider. Through this arrangement, the second pressing member presses the second slider against a side wall of the second arc-shaped groove, thereby reducing the clearance between the second slider and the second arc-shaped groove, which helps to further improve the shaking phenomenon of the rotating mechanism during use.

[0014] In some embodiments, the second pressing member includes a wear-resistant block, the hardness of which is less than the hardness of the fixed bracket. This arrangement facilitates hard pressing between the wear-resistant block and the second slider, improving the jamming phenomenon that occurs when the second slider rotates.

[0015] In some embodiments, the wear-resistant block includes a contact surface that contacts the second slider, and the roughness of the contact surface is less than the roughness of the groove wall of the second arc-shaped groove. Because the roughness of the contact surface is less than the roughness of the second arc-shaped groove, the coefficient of friction between the wear-resistant block and the second slider is reduced, which helps to improve the jamming phenomenon when the second slider rotates.

[0016] In some embodiments, the wear-resistant block is made of POM and / or PEEK. POM and PEEK have high wear resistance, which helps prevent wear on the second extruder after long-term use. Simultaneously, POM and PEEK also have self-lubricating properties, which further reduces the coefficient of friction between the wear-resistant block and the second slider, further improving the smoothness of rotation of the second slider.

[0017] In some embodiments, the second arc-shaped groove is recessed into one sidewall of the second slider to form a second mounting groove, and at least a portion of the wear-resistant block is located within the second mounting groove. This arrangement allows the wear-resistant block to be connected to the fixed bracket.

[0018] In some embodiments, a communication port is provided between the second mounting groove and the second arc-shaped slide groove, and the wear-resistant block further includes a mating surface disposed opposite to the contact surface, wherein the area of ​​the communication port is smaller than the area of ​​the mating surface. With this configuration, since the area of ​​the communication port is smaller than the area of ​​the mating surface, the wear-resistant block can be prevented from falling out of the communication port during the rotation of the mechanism, which is beneficial to improving the reliability of the connection and the stability of the structural movement.

[0019] In some embodiments, the rotating mechanism further includes the rotating mechanism in any of the above embodiments, as well as a first structural member, a second structural member, and a flexible screen. The first and second structural members are connected to both sides of the rotating mechanism. The flexible screen is located on the same side of the first and second structural members and is connected to both the first and second structural members. The flexible screen is also connected to the rotating mechanism. The foldable display terminal provided by the embodiments of this application includes the rotating mechanism described above, and therefore has all the above-described beneficial effects, which will not be repeated here. Attached Figure Description

[0020] Figure 1 A structural diagram of a foldable display terminal provided in an embodiment of this application;

[0021] Figure 2 This is a structural diagram of a foldable display terminal in a flat state, provided in an embodiment of this application.

[0022] Figure 3 This is a structural diagram of a foldable display terminal in a folded state, provided in an embodiment of this application.

[0023] Figure 4 This is a schematic diagram illustrating the assembly of a rotating mechanism with a first structural member and a second structural member, as provided in an embodiment of this application.

[0024] Figure 5 A structural diagram of a rotating mechanism provided in an embodiment of this application;

[0025] Figure 6 for Figure 5 A cross-sectional view of the rotating mechanism along section line AA;

[0026] Figure 7 for Figure 6 A magnified view of a portion of point M1 in the image;

[0027] Figure 8 for Figure 5 A cross-sectional view of the base along section line AA;

[0028] Figure 9 for Figure 5 A cross-sectional view of the door panel assembly in the opposite direction to section line AA;

[0029] Figure 10 for Figure 5 A cross-sectional view of the rotating mechanism along section line BB;

[0030] Figure 11 for Figure 10 A magnified view of a portion of point M2 in the image;

[0031] Figure 12 for Figure 5A magnified view of point N in the image;

[0032] Figure 13 A structural diagram of a wear-resistant block provided in an embodiment of this application;

[0033] Figure 14 for Figure 13 A cross-sectional view of the wear-resistant block along the CC section line. Detailed Implementation

[0034] 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.

[0035] In the following description, the terms "first," "second," etc., are used for ease of description 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, "multiple" means two or more.

[0036] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0037] In the embodiments of this application, the directional indications used to explain the structure and movement of different components, such as up, down, left, right, front, and back, are relative. These indications are appropriate when the components are in the positions shown in the figures. However, if the description of the component positions changes, these directional indications will also change accordingly.

[0038] This application provides a foldable display terminal. The foldable display terminal can be a mobile phone, tablet computer, television, smart wearable products (e.g., smartwatches, smart bracelets), virtual reality (VR) devices, augmented reality (AR) devices, or other terminal products.

[0039] Figure 1 This is a structural diagram of a foldable display terminal provided in an embodiment of this application. Figure 1As shown, the foldable display terminal 1 may include a flexible screen 30. The flexible screen 30 may be an active matrix organic light emitting diode (AMOLED) display.

[0040] As a self-emissive display, AMOLED displays do not require a backlight module (BLM). Therefore, when the substrate of an AMOLED display is made of a flexible resin material, such as polyethylene terephthalate (PET), the AMOLED display can be bent.

[0041] In addition, continue to refer to Figure 1 The foldable display terminal 1 also includes a first structural member 21, a second structural member 22, and a rotating mechanism 10, with the rotating mechanism 10 connected between the first structural member 21 and the second structural member 22. The first structural member 21 and the second structural member 22 can rotate around the rotating mechanism 10 respectively. The first structural member 21 and the second structural member 22 can be a housing or a mid-frame structure in an electronic device. The first structural member 21 and the second structural member 22 can support the flexible screen 30, ensuring that the flexible screen 30 remains as flat as possible during use and protecting the non-display surfaces of the flexible screen 30.

[0042] A portion of the flexible screen 30 is fixed to the first structural member 21 via an adhesive layer 40, a portion is fixed to the second structural member 22 via the adhesive layer 40, and a portion is fixed to the rotating mechanism 10 via the adhesive layer 40. The adhesive layer 40 can be a thin film layer formed by applying adhesive; the specific form of the adhesive layer 40 is not limited in this embodiment. In some embodiments, other electronic components, such as cameras, headphones, earpieces, buttons, and batteries, can also be disposed on the first structural member 21 and the second structural member 22. The other electronic components disposed on the first structural member 21 and the second structural member 22 are not limited in this embodiment.

[0043] The first structural member 21 and the second structural member 22 can rotate relative to the rotating mechanism 10. Figure 2 This is a structural diagram of a foldable display terminal 1 in a flat state, provided in an embodiment of this application. Figure 3 This is a structural diagram of a foldable display terminal 1 in a folded state, provided in an embodiment of this application. (Combined with...) Figure 2 and Figure 3 The first structural member 21 and the second structural member 22 can rotate along the axis O of the rotating mechanism 10, thereby causing the flexible screen 30 to fold or unfold. Figure 2As shown, when the included angle α between the first structural member 21 and the second structural member 22 is 180°, the flexible screen 30 is in a flat state. When the included angle α between the first structural member 21 and the second structural member 22 decreases to a preset angle, the flexible screen 30 can be in a suspended state. Further, referring to... Figure 3 When the included angle α between the first structural member 21 and the second structural member 22 decreases to 0°, the flexible screen 30 is in a folded state.

[0044] Figure 4 This is a schematic diagram illustrating the assembly of a rotating mechanism 10 with a first structural member 21 and a second structural member 22, as provided in an embodiment of this application. Figure 4 As shown, the rotating mechanism 10 includes a base 11 and two door panel assemblies 12 located on opposite sides of the base 11, the door panel assemblies 12 being rotatable relative to the base 11. The two door panel assemblies 12 include a door panel assembly 12a located on the left side of the base 11 and a door panel assembly 12b located on the right side of the base 11. The rotating mechanism 10 may also include two fixed supports 13 located on opposite sides of the base 11, the fixed supports 13a located on the left side of the base 11 and a fixed support 13b located on the right side of the base 11. One fixed support 13a is connected to a first structural member 21 and rotatably connected to one door panel assembly 12a; the other fixed support 13b is connected to a second structural member 22 and rotatably connected to the other door panel assembly 12b. Furthermore, the rotation axis between the door panel assembly 12 and the base 11 is parallel to the rotation axis between the fixed support 13 and the door panel assembly 12.

[0045] With the above configuration, the first structural member 21 can drive a fixed bracket 13a to rotate, thereby driving a door panel assembly 12a to rotate relative to the base 11. Similarly, the second structural member 22 can drive another fixed bracket 13b to rotate, thereby driving another door panel assembly 12b to rotate relative to the base 11.

[0046] In some embodiments, a rotating pair can be formed between a door panel assembly 12 and a base 11. For example, the door panel assembly 12 may have an arc-shaped groove, and correspondingly, the base 11 may have an arc-shaped sliding column that cooperates with the arc-shaped groove. When the arc-shaped sliding column slides within the arc-shaped groove, the door panel assembly 12 and the base 11 can rotate relative to each other. However, due to certain errors in the processing of the parts, there may be processing deviations on the surface of the arc-shaped sliding column or the arc-shaped groove. When the arc-shaped sliding column is actually assembled into the arc-shaped groove, the gap between the arc-shaped sliding column and the arc-shaped groove may increase, which will cause the fit between the door panel assembly 12 and the base 11 to be unstable, thereby causing the rotating mechanism 10 to shake and reducing the user experience.

[0047] In some embodiments, to reduce the clearance between rotating pairs, it is necessary to improve the machining accuracy of the components, for example, to limit the tolerance zone of the components to less than or equal to 0.03 mm. However, as the machining accuracy of the components increases, the machining cost of the components also increases.

[0048] In some other embodiments, to reduce the clearance within the rotating joint, a sorting and assembly method is typically used. For example, based on the tolerance range of the arc-shaped slide column, it can be divided into two grades: small-sized slide columns and large-sized slide columns. Similarly, based on the tolerance range of the arc-shaped groove, it can be divided into two grades: small-sized grooves and large-sized grooves. During sorting and assembly, small-sized slide columns are assembled with small-sized grooves, and large-sized slide columns are assembled with large-sized grooves. However, this sorting and assembly method requires precise measurement of the parts to achieve sorting, thus increasing labor costs. Furthermore, manual sorting is prone to misassembly and incorrect assembly, leading to material stagnation in certain batches of parts due to mismatched grades.

[0049] In view of this, the rotating mechanism 10 provided in the embodiments of this application further includes a pressing component for pressing the rotating pair, thereby reducing the fitting clearance within the rotating pair.

[0050] Figure 5 A structural diagram of a rotating mechanism 10 provided in an embodiment of this application; Figure 6 for Figure 5 A cross-sectional view of the rotating mechanism 10 along section line AA. (See figure) Figure 5 and Figure 6 As shown, the door panel assembly 12 includes a door panel body 121, the door panel body 121 having a first arc-shaped slide groove 122, and the base 11 including a first slider 111 that cooperates with the first arc-shaped slide groove 122. The first slider 111 is installed in the first arc-shaped slide groove 122. When the first slider 111 slides along the first arc-shaped slide groove 122, the first slider 111 can drive the base 11 to rotate relative to the door panel assembly 12.

[0051] Figure 7 for Figure 6 A magnified view of a portion of point M1 in the image; Figure 8 for Figure 5 A cross-sectional view of the base 11 along section line AA; Figure 9 for Figure 5 A cross-sectional view of door panel assembly 12 in the opposite direction to section line AA. (See attached image.) Figure 7 and Figure 9 As shown, the first arc-shaped groove 122 may include a first sidewall 1211 and a second sidewall 1212 disposed opposite to each other (the first sidewall 1211 may be...). Figure 7The lower sidewall of the first arc-shaped groove 122 and the second sidewall 1212 can be Figure 7 The upper sidewall of the first arc-shaped groove 122, the first sidewall 1211 and the second sidewall 1212 are both arc-shaped surfaces, and the first sidewall 1211 and the second sidewall 1212 are curved in the same direction to form an arc.

[0052] Accordingly, such as Figure 7 and Figure 8 As shown, the first slider 111 is generally arc-shaped. The first slider 111 may include a first sliding wall 1111 and a second sliding wall 1112 disposed opposite to each other (the first sliding wall 1111 can be...). Figure 7 The lower side wall of the first slider 111, and the second slider 1112 can be Figure 7 The first sliding wall 111 has an upper sidewall that mates with the first sidewall 1211, and the second sliding wall 1112 has an arcuate surface that mates with the second sidewall 1212. With this configuration, the first sliding wall 111 can slide within the first arcuate groove 122, allowing the base 11 and the door panel assembly 12 to rotate relative to each other. The sliding direction S1 of the first sliding wall 111 is the extending direction of the first arcuate groove 122.

[0053] When the first slider 111 is slidably positioned in the first arc-shaped groove 122, the first sidewall 1211 is located on the side where the first sliding wall 1111 is located in the first slider 111, and the second sidewall 1212 is located on the side where the second sliding wall 1112 is located in the first slider 111. To ensure smooth sliding of the first slider 111 in the first arc-shaped groove 122, the first slider 111 and the second arc-shaped groove 122 are typically fitted with a clearance, such as... Figure 7 As shown, there is a certain gap between the first sidewall 1211 and the first sliding wall 1111, and between the second sidewall 1212 and the second sliding wall 1112.

[0054] Figure 10 for Figure 5 A cross-sectional view of the rotating mechanism 10 along the BB section line. (See figure) Figure 10 As shown, in the rotating mechanism 10 provided in this application embodiment, at least one door panel assembly 12 further includes a first pressing member 14. In some embodiments, one of the two door panel assemblies 12 includes the first pressing member 14, or each of the two door panel assemblies 12 includes the first pressing member 14.

[0055] In some embodiments, the first extruder is mounted on the base 11. (See reference...) Figure 10 and Figure 8The base 11 may have a first mounting groove 112, and the first pressing member 14 may be installed in the first mounting groove 112. The sidewall 1121 of the first mounting groove may protrude to form a first slider 111, and a portion of the door panel body 121 may extend into the first mounting groove 112 so that the first arc-shaped sliding groove 122 located on the door panel body 121 can cooperate with the first slider 111. Figure 9 The door panel body 121 extending into the first mounting groove 112 may include a side surface 123 facing the side wall 1121 of the first mounting groove and a bottom surface 124 facing the bottom wall 1122 of the first mounting groove, wherein the side surface 123 may be recessed to form a first arc-shaped sliding groove 122. Accordingly, the first pressing member 14 may be located between the bottom surface 124 of the door panel body 121 and the bottom wall 1122 of the first mounting groove, so as to avoid the first pressing member 14 occupying space other than the base 11, which is conducive to improving the compactness of the structure and realizing the miniaturization of the rotating mechanism 10.

[0056] In some other embodiments, the first extruder 14 may also be mounted on the side wall of the base 11, and correspondingly, the side wall of the base 11 may be recessed to form a first mounting groove 112. This application does not specifically limit the mounting position of the first extruder 14.

[0057] In this design, the first pressing member 14 presses against the door panel body 121 along a first target direction X. This first target direction X is perpendicular to the sliding direction S1 of the first slider 111 and points towards a sidewall of the first slider 111 facing the first arc-shaped groove 122. For example, the first pressing member 14 can press against the bottom surface 124 of the door panel body. Through the pressing action of the first pressing member 14 on the door panel body 121, the gap between the second sliding wall 1112 of the first slider 111 and the second sidewall 1212 of the first arc-shaped groove 122 is reduced. When the pressing force of the first pressing member 14 on the door panel body 121 is sufficiently large, zero gap can be achieved between the second sliding wall 1112 of the first slider 111 and the second sidewall 1212 of the first arc-shaped groove 122, which helps to improve the shaking phenomenon of the rotating mechanism 10 during use. Here, the first target direction X can be the direction from the bottom surface 124 of the door panel body 121 towards the second sidewall 1212.

[0058] In summary, the first pressing member 14 presses the door panel body 121 against one side wall of the first slider 111, thereby reducing the gap between the second side wall 1212 of the first arc-shaped slide groove 122 and the second sliding wall 1112 of the first slider 111, which in turn reduces the fitting gap between the first slider 111 and the first arc-shaped slide groove 122, which helps to improve the shaking phenomenon of the rotating mechanism 10 during use.

[0059] Furthermore, the first mounting groove 112 includes two oppositely arranged side walls, each side wall may have a first slider 111. Correspondingly, the door panel body 121 includes two oppositely arranged side surfaces, each side surface may have a first arc-shaped groove 122. An arc-shaped groove cooperates with a first slider 111, which helps to improve the stability of the relative rotation between the door panel assembly 12 and the base 11.

[0060] In some embodiments, the first extrusion member 14 may include an elastic sheet 14a. Exemplarily, the elastic sheet 14a may be made of spring steel. Spring steel has good elasticity, can withstand heavy loads without plastic deformation, has high fatigue strength, and has a long service life under repeated loads; at the same time, spring steel also has a certain degree of toughness and plasticity, which can prevent sudden brittle fracture under impact.

[0061] The elastic sheet 14a can be connected to the base 11 and can elastically contact the door panel body 121. As described in the above embodiments, the elastic sheet 14a can be located within the first mounting groove 112. In some embodiments, one end of the elastic sheet 14a can be welded to the side wall 1121 of the first mounting groove, and the other end of the elastic sheet 14a can elastically contact the bottom surface 124 of the door panel body 121. Here, "elastic contact" can be understood as the interaction force generated by the contact between the elastic sheet 14a and the door panel body 121, which can cause the elastic sheet 14a to elastically deform. When the door panel body 121 rotates, the elastic sheet 14a undergoes elastic deformation. In some other embodiments, both ends of the elastic sheet 14a can also be detachably connected to the base 11. For example, both ends of the elastic sheet 14a can be fastened to the side wall 1121 of the first mounting groove by threads, and the portion of the elastic sheet 14a located at the center position can elastically contact the bottom surface 124 of the door panel body. By making the elastic sheet 14a and the base 11 detachably connected, it is beneficial to achieve quick disassembly and assembly when replacing and repairing the elastic sheet 14a.

[0062] For example, because the elastic sheet 14a can undergo elastic deformation, the elastic restoring force of the elastic sheet 14a is applied to the door panel body 121 along the first target direction X, thereby reducing the mating gap between the first slider 111 and the first arc-shaped groove 122, thus improving the shaking phenomenon of the rotating mechanism 10 during use. At the same time, because the elastic sheet 14a can undergo elastic deformation, the elastic sheet 14a and the first slider 111 are in elastic contact, preventing the first slider 111 from getting stuck during rotation.

[0063] Based on the above structure, an interference fit can be achieved between the elastic sheet 14a and the door panel body 121. An "interference fit" means that the elastic sheet 14a is in contact with the door panel body 121, and the elastic sheet 14a undergoes elastic deformation. By adjusting the amount of interference between the elastic sheet 14a and the door panel body 121, the assembled elastic sheet 14a can always be in a state of elastic deformation. Here, the "interference amount" can be understood as the amount of deformation of the elastic sheet 14a after elastic deformation. Figure 11 for Figure 10 A magnified view of section M2 in the image. (Refer to...) Figure 11 The interference fit D1 between the elastic sheet 14a and the door panel body 121 can range from 0.05mm to 0.1mm. For example, the interference fit D1 between the elastic sheet 14a and the door panel body 121 can be 0.05mm, 0.07mm, 0.09mm, or 0.1mm. When the interference fit D1 between the elastic sheet 14a and the door panel body 121 approaches 0.05mm, the deformation of the elastic sheet 14a is small, that is, the elastic restoring force applied by the elastic sheet 14a to the door panel body 121 is small, which helps to ensure the smoothness of the rotation of the door panel body 121. When the interference fit D1 between the elastic sheet 14a and the door panel body 121 approaches 0.1mm, the elastic restoring force applied by the elastic sheet 14a to the door panel body 121 is large, which helps to reduce the fit clearance between the first slider 111 and the first arc-shaped slide groove 122, thereby improving the shaking phenomenon of the rotating mechanism 10 during use.

[0064] Understandably, due to the frequent use of the foldable display terminal 1, after the rotating mechanism 10 has rotated multiple times, wear occurs between the first slider 111 and the first arc-shaped slide groove 122, which further increases the gap between the first slider 111 and the first arc-shaped slide groove 122, thereby causing the shaking of the rotating mechanism 10 to intensify.

[0065] In this embodiment of the application, by adjusting the interference D1 between the elastic sheet 14a and the first slider 111, the elastic sheet 14a can be kept in an elastic deformation state. When the first slider 111 is worn, the elastic sheet 14a continues to squeeze the first slider 111 under the action of elastic restoring force and still maintains an elastic deformation state, which improves the problem of increased shaking after the first slider 111 is worn.

[0066] Reference Figure 10The elastic sheet 14a may include a first elastic arm 141 and a second elastic arm 142, which are connected together. The first elastic arm 141 and the second elastic arm 142 may be formed by bending the same elastic steel, that is, the first elastic arm 141 and the second elastic arm 142 may be integrally formed. Alternatively, the first elastic arm 141 and the second elastic arm 142 may also be welded together. Further, the included angle between the first elastic arm 141 and the second elastic arm 142 is an obtuse angle. Figure 11 By setting the included angle β between the first elastic arm 141 and the second elastic arm 142, it is beneficial to adjust the elastic force of the elastic sheet 14a. At the same time, since the included angle β between the first elastic arm 141 and the second elastic arm 142 is an obtuse angle, the space occupied by the elastic sheet 14a in the thickness direction of the base 11 is small, which is beneficial to achieving a thinner and lighter rotating mechanism 10, and thus to achieving a thinner and lighter foldable display terminal 1.

[0067] Furthermore, one of the elastic arms 141 and 142 contacts the door panel body 121. For example, located in... Figure 10 The elastic arm on the left side of the position can be the first elastic arm 141, located in Figure 10 The elastic arm on the right side of the position can be the second elastic arm 142. When the first elastic arm 141 elastically contacts the door panel body 121, the first elastic arm 141 can squeeze the door panel body 121. At the same time, the second elastic arm 142 can buffer the movement, thereby reducing the gap between the first slider 111 and the first arc-shaped groove 122, thus improving the shaking phenomenon of the rotating mechanism 10 during use.

[0068] Based on the above structure, combined with Figure 8 and Figure 10 One end of the elastic arm opposite to the other elastic arm may have a mounting hole 144, and the side wall 1121 of the first mounting groove may have a mating hole 1123. The first pressing member 14 also includes a pin 143, which passes through the mounting hole 144 and the mating hole 1123. With the above arrangement, the elastic piece 14a can rotate relative to the pin 143, thereby realizing a rotatable connection between the elastic piece 14a and the base 11, which helps to improve the buffering effect of the elastic piece 14a and further helps to prevent the rotating mechanism 10 from jamming during rotation.

[0069] Of course, the shape of the elastic sheet 14a is not limited to the structure in the above embodiments, and the present application does not specifically limit the shape of the elastic sheet 14a. In some embodiments, the elastic sheet 14a can also be bent into multiple elastic arms, each elastic arm being generally flat. For example, the elastic sheet 14a may include three elastic arms, wherein the elastic arm located in the middle position is used for elastic contact with the door panel body 121. Alternatively, the elastic sheet 14a can also be generally arc-shaped. Accordingly, the elastic sheet 14a can be rotatably connected to the side wall 1121 of the first mounting groove via a pin 143. In some other embodiments, the elastic sheet 14a can also be generally flat. Accordingly, one end of the elastic sheet 14a can be welded to the side wall 1121 of the first mounting groove.

[0070] Figure 12 for Figure 5 A magnified view of point N in the image. (See image for example.) Figure 12 As shown, in some embodiments, the fixing bracket 13 may have a second arcuate groove 132, correspondingly combined with Figure 9 As shown, the door panel assembly 12 may further include a second slider 125 that cooperates with the second arc-shaped slide groove 132. The central axis of the second arc-shaped slide groove 132 is parallel to the central axis of the first arc-shaped slide groove 122, so that the rotation axis between the door panel assembly 12 and the base 11 is parallel to the rotation axis between the fixed bracket 13 and the door panel assembly 12.

[0071] The fixed bracket 13 can be generally columnar in shape, and the second arc-shaped groove 132 can be located on the side wall 131 of the fixed bracket 13. The second arc-shaped groove 132 may include a third side wall 1321 and a fourth side wall 1322 disposed opposite to each other (the third side wall 1321 can be...). Figure 12 The lower sidewall of the second arc-shaped groove 132 and the fourth sidewall 1322 can be Figure 12 The upper sidewall of the second arc-shaped groove 132), the third sidewall 1321 and the fourth sidewall 1322 are all arc-shaped surfaces, and the third sidewall 1321 and the fourth sidewall 1322 are curved in the same direction.

[0072] Reference Figure 9 and Figure 12 The second slider 125 is connected to the door panel body 121. The second slider 125 may include a third sliding wall 1251 and a fourth sliding wall 1252 disposed opposite to each other (the third sliding wall 1251 may be...). Figure 9 The lower side wall of the second slider 125 and the fourth slider 1252 can be Figure 9The second slider 125 has an upper sidewall, and the third sliding wall 1251 is an arc-shaped surface that mates with the third sidewall 1321, and the fourth sliding wall 1252 is an arc-shaped surface that mates with the fourth sidewall 1322. With the above arrangement, the second slider 125 can slide within the second arc-shaped groove 132, allowing for a rotatable connection between the door panel body 121 and the fixed bracket 13. The sliding direction of the second slider 125 is the same as the extending direction of the second arc-shaped groove 132.

[0073] It is understandable that the second slider 125 and the second arc-shaped groove 132 also constitute a revolute joint. The cumulative gaps of multiple revolute joints will increase the shaking of the rotating mechanism 10, affecting the user experience of the product.

[0074] Based on the above structure, continue to refer to Figure 12 At least one door panel assembly 12 may further include a second extruder 15. In some embodiments, one of the two door panel assemblies 12 includes the second extruder 15, or each of the two door panel assemblies 12 includes the second extruder 15.

[0075] The second extruder 15 is mounted on the fixed bracket 13. The second extruder 15 extrudes the second slider 125 along a second target direction Y. The second target direction is perpendicular to the sliding direction S2 of the second slider 125 and points towards a sidewall of the second arc-shaped groove 132 facing the second slider 125. Here, the sliding direction S2 of the second slider 125 is the extending direction of the second arc-shaped groove 132. Figure 9 and Figure 12 The second pressing member 15 can be located below the second slider 125, and can press the third sliding wall 1251 of the second slider 125. Through the pressing action of the second pressing member 15 on the second slider 125, the gap between the fourth sliding wall 1252 of the second slider 125 and the fourth side wall 1322 of the second arc-shaped groove 132 is reduced. When the pressing force of the second pressing member 15 on the second slider 125 is sufficiently large, zero gap can be achieved between the fourth sliding wall 1252 of the second slider 125 and the fourth side wall 1322 of the second arc-shaped groove 132, which helps to improve the shaking phenomenon of the rotating mechanism 10 during use. Here, the second target direction Y can be the direction from the third sliding wall 1251 of the second slider 125 to the fourth side wall 1322.

[0076] In summary, through the above-mentioned arrangement, the second pressing member 15 presses the second slider 125 against one side wall of the second arc-shaped slide groove 132, thereby reducing the clearance between the second slider 125 and the second arc-shaped slide groove 132, which is beneficial to further improve the shaking phenomenon of the rotating mechanism 10 during use.

[0077] Continue to refer to Figure 12The fixed bracket 13 may include a second mounting groove 133, which may communicate with a second arc-shaped slide groove 132. A second pressing member 15 is mounted within the second mounting groove 133 to connect with the fixed bracket 13. The second arc-shaped slide groove 132 has a recessed sidewall facing the second slider 125 to form the second mounting groove 133, and at least a portion of the second pressing member 15 is located within the second mounting groove 133. For example, the third sidewall 1321 of the second arc-shaped slide groove 132 may be recessed to form the second mounting groove 133, and a communication port 134 exists between the second arc-shaped slide groove 132 and the second mounting groove 133 to allow communication between them.

[0078] In some embodiments, the second extruder 15 includes a wear-resistant block 15a. Figure 13 This is a structural diagram of a wear-resistant block 15a provided in an embodiment of this application. Figure 13 As shown, the wear-resistant block 15a can be made of a material with high wear resistance, thereby avoiding severe wear of the second extruder 15 after long-term use, which would affect the fit between the second extruder 15 and the second slider 125.

[0079] For example, the wear-resistant block 15a also includes a contact surface 151 that contacts the second slider 125. The contact surface 151 is located at one end of the wear-resistant block 15a away from the second mounting groove 133. A portion of the wear-resistant block 15a can extend from the first mounting groove 112 into the second arc-shaped sliding groove 132, so that the contact surface 151 can contact the third sliding wall 1251 of the second slider 125. The shape of the contact surface 151 can be appropriately set according to the shape of the second slider 125. Figure 13 As shown, when the third sliding wall 1251 of the second slider 125 is an arc-shaped surface, the contact surface 151 can be an arc-shaped surface that mates with the third sliding wall 1251.

[0080] It is understandable that the materials of the fixed bracket 13 and the second slider 125 are usually metal. When the second slider 125 slides within the second arc-shaped groove 132 of the fixed bracket 13, the two relatively hard metal parts come into contact, causing a jamming phenomenon in the relative rotation between the two metal parts. In this embodiment, the hardness of the wear-resistant block 15a can be less than the hardness of the fixed bracket 13, which is beneficial to achieve hard compression between the wear-resistant block 15a and the second slider 125, and improve the jamming phenomenon when the second slider 125 rotates.

[0081] Furthermore, the roughness of the contact surface 151 can be less than the roughness of the groove wall of the second arc-shaped slide 132. Since the roughness of the contact surface 151 is less than the roughness of the second arc-shaped slide 132, the coefficient of friction between the wear-resistant block 15a and the second slider 125 is further reduced, which is beneficial to improving the jamming phenomenon when the second slider 125 rotates.

[0082] In some embodiments, the material of the wear-resistant block 15a includes POM (polyoxymethylene) and / or PEEK (polyetheretherketone). POM and PEEK have high wear resistance, which helps prevent wear on the second extrusion 15 after long-term use. Simultaneously, POM and PEEK also have self-lubricating properties, which helps to further reduce the coefficient of friction between the wear-resistant block 15a and the second slider 125, further improving the smoothness of rotation of the second slider 125.

[0083] Based on the above structure, a zero-clearance fit or an interference fit can be achieved between the wear-resistant block 15a and the second slider 125. Here, "zero-clearance fit" means that the wear-resistant block 15a is in contact with the second slider 125, but the wear-resistant block 15a does not deform. "Interference fit" means that the wear-resistant block 15a is in contact with the second slider 125, and the wear-resistant block 15a undergoes elastic deformation. By adjusting the interference between the wear-resistant block 15a and the second slider 125, the assembled wear-resistant block 15a can always remain in an elastic deformation state. Figure 14 for Figure 13 A cross-sectional view of the wear-resistant block 15a along the CC section line. (Refer to...) Figure 14 "Interference fit" can be understood as the amount of deformation of the wear-resistant block 15a after elastic deformation. The interference fit between the wear-resistant block 15a and the second slider 125 can range from 0.05mm to 0.1mm. For example, the interference fit between the wear-resistant block 15a and the second slider 125 can be 0.05mm, 0.07mm, 0.09mm, or 0.1mm. When the interference fit between the wear-resistant block 15a and the second slider 125 is close to 0.05mm, the deformation of the wear-resistant block 15a is small, meaning the elastic restoring force exerted by the wear-resistant block 15a on the second slider 125 is small, which helps ensure the smoothness of the rotation of the second slider 125. When the interference fit between the wear-resistant block 15a and the second slider 125 is close to 0.1mm, the elastic restoring force exerted by the wear-resistant block 15a on the second slider 125 is large, which helps reduce the fit clearance between the second slider 125 and the second arc-shaped groove 132, thereby improving the shaking phenomenon of the rotating mechanism 10 during use.

[0084] As described in the above embodiments, continue to refer to Figure 12The second mounting groove 133 and the second arc-shaped sliding groove 132 have a communication opening 134. The wear-resistant block 15a also includes a mating surface 152 opposite to the contact surface 151, and the area of ​​the communication opening 134 is smaller than the area of ​​the mating surface 152. For example, the mating surface 152 of the wear-resistant block 15a is located at one end of the wear-resistant block 15a facing the bottom 133 of the second mounting groove 133, so that the contact surface 151 and the mating surface 152 of the wear-resistant block 15a are opposite to each other. The wear-resistant block 15a can be generally wedge-shaped, wherein the area of ​​the contact surface 151 of the wear-resistant block 15a can be smaller than the area of ​​the mating surface 152 of the wear-resistant block 15a, so that the contact surface 151 of the wear-resistant block 15a is located at the tip of the wedge. Accordingly, the shape of the second mounting groove 133 can be set according to the shape of the wear-resistant block 15a to achieve the installation and fixation of the wear-resistant block 15a. That is, the area of ​​the connection port is also smaller than the area of ​​the bottom 133 of the second mounting groove 133.

[0085] With the above configuration, since the area of ​​the connecting port 134 is smaller than the area of ​​the mating surface 152, the wear-resistant block 15a can be prevented from falling out of the connecting port 134 during the movement of the rotating mechanism 10, which is beneficial to improving the reliability of the connection and the stability of the structural movement.

[0086] As described in the above embodiment, the second arc-shaped groove 132 is located on the side wall 131 of the fixed bracket 13. Since the second mounting groove 133 is formed by the recess of the third side wall 1321 of the second arc-shaped groove 132, the second mounting groove 133 is also located on this side wall. When the wear-resistant block 15a is installed into the second mounting groove 133, the wear-resistant block 15a can be embedded into the second mounting groove 133. Furthermore, the wear-resistant block 15a can be interference-fitted with the second mounting groove 133.

[0087] It is understandable that the fixed bracket 13 only needs to have a second mounting slot 133 to install the wear-resistant block 15a, without the need for other assembly parts. This design eliminates the need for adhesives or other bonding structures, allowing the wear-resistant block 15a to connect to the fixed bracket 13, thus improving the installation efficiency of the second extrusion member 15. Furthermore, this design eliminates the need for additional parts, reducing the installation space required for the wear-resistant block 15a and enabling a thinner and lighter rotating mechanism 10.

[0088] Furthermore, after the wear-resistant block 15a is embedded in the second mounting groove 133, the fixed bracket 13 can be connected to the corresponding structural component (e.g., the first structural component 21 or the second structural component 22), and part of the structure is located on one side of the side wall of the fixed bracket 13 where the wear-resistant block 15a is mounted. Through the above arrangement, the structure can also play a limiting role, which is conducive to the wear-resistant block 15a being dislodged from the side wall of the fixed bracket 13, thereby further improving the reliability of the connection and the stability of the structural movement.

[0089] In some implementations, the first pressing member 14 may include the wear-resistant block 15a in the above embodiments. Similarly, the second pressing member 15 may include the elastic sheet 14a in the above embodiments. In the rotating mechanism 10, the mounting positions of the wear-resistant block 15a and the elastic sheet 14a may be interchanged.

[0090] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A rotating mechanism, characterized in that, include: The base and two door panel assemblies located on opposite sides of the base, each door panel assembly including a door panel body having a first arc-shaped groove, the base including a first slider cooperating with the first arc-shaped groove, the first slider being installed in the first arc-shaped groove; At least one of the door panel assemblies further includes a first extruder mounted on the base, the first extruder extruding the door panel body along a first target direction, the first target direction being perpendicular to the sliding direction of the first slider and pointing to a sidewall of the first slider facing the first arc-shaped groove; The first extrusion member includes an elastic sheet connected to the base. The elastic sheet includes a first elastic arm and a second elastic arm connected to each other. One of the elastic arms is in elastic contact with the door panel body, and one end of the elastic arm opposite to the other elastic arm is rotatably connected to the base.

2. The rotating mechanism according to claim 1, characterized in that, The base also includes a first mounting groove, the sidewall of which protrudes to form the first slider; the door panel body includes a side surface and a bottom surface, the side surface faces the sidewall of the first mounting groove and is recessed to form the first arc-shaped sliding groove, the bottom surface faces the bottom wall of the first mounting groove, and the elastic sheet is located between the bottom wall of the first mounting groove and the bottom surface.

3. The rotating mechanism according to claim 1, characterized in that, The angle between the first elastic arm and the second elastic arm is an obtuse angle.

4. The rotating mechanism according to claim 2, characterized in that, One of the elastic arms has a mounting hole at one end opposite to the other elastic arm, the sidewall of the first mounting groove has a mating hole, and the first extruder also includes a pin that passes through the mounting hole and the mating hole.

5. The rotating mechanism according to any one of claims 1-4, characterized in that, It also includes two fixed brackets located on opposite sides of the base, the fixed brackets having a second arc-shaped slide groove, and the door panel assembly further includes a second slider that cooperates with the second arc-shaped slide groove, the central axis of the second arc-shaped slide groove being parallel to the central axis of the first arc-shaped slide groove; At least one of the door panel assemblies further includes a second extruder mounted on the fixed bracket, the second extruder extruding the second slider along a second target direction, the second target direction being perpendicular to the sliding direction of the second slider and pointing towards a sidewall of the second arc-shaped groove facing the second slider.

6. The rotating mechanism according to claim 5, characterized in that, The second extrusion component includes a wear-resistant block, the hardness of which is less than the hardness of the fixed bracket.

7. The rotating mechanism according to claim 6, characterized in that, The wear-resistant block includes a contact surface that contacts the second slider, and the roughness of the contact surface is less than the roughness of the groove wall of the second arc-shaped groove.

8. The rotating mechanism according to claim 6, characterized in that, The wear-resistant block is made of POM and / or PEEK.

9. The rotating mechanism according to claim 7, characterized in that, The second arc-shaped groove is recessed into one side wall of the second slider to form a second mounting groove, and at least part of the wear-resistant block is located in the second mounting groove.

10. The rotating mechanism according to claim 9, characterized in that, The second mounting groove and the second arc-shaped sliding groove have a communication opening. The wear-resistant block also includes a mating surface that is opposite to the contact surface. The area of ​​the communication opening is smaller than the area of ​​the mating surface.

11. A foldable display terminal, characterized in that, Including the rotating mechanism as described in any one of claims 1-10, and A first structural component and a second structural component are connected to both sides of the rotating mechanism; A flexible screen is located on the same side of the first structural member and the second structural member, and is connected to the first structural member and the second structural member. The flexible screen is also connected to the rotating mechanism.

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