Rotating mechanism and foldable display terminal

Abstract

The embodiment of the invention 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 the two 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. The at least one door plate assembly further comprises a first extrusion part, the first extrusion part is installed on the base, the first extrusion part extrudes the door plate body in the first target direction, and the first target direction is perpendicular to the sliding direction of the first sliding block and points to one side wall, facing the first arc-shaped sliding groove, of the first sliding block. Through the arrangement, the first extrusion piece has an extrusion effect on the door plate main body, and the first extrusion piece can extrude the door plate main body towards one side wall of the first arc-shaped sliding groove, so that the fit clearance between the first sliding block and the first arc-shaped sliding groove is reduced, and the phenomenon that the rotating mechanism shakes in use is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electronic products, and in particular to a rotating mechanism and a foldable display terminal. Background Art

[0002] With the commercialization of flexible display screens, foldable flexible screen mobile phones, foldable flexible screen tablets, and wearable electronic devices with foldable flexible screens are an important evolution direction for future smart terminal devices. When the foldable display terminal is unfolded, it can obtain a larger display area to improve the viewing effect. When the foldable display terminal is folded, it can obtain a smaller volume, which is convenient for users to carry.

[0003] The foldable display terminal includes at least: a flexible screen and two structural members for supporting the flexible screen and a rotating mechanism. The two structural members are connected to both sides of the rotating mechanism. In actual use, the rotating mechanism drives the two structural members to rotate so that the foldable display terminal is in a folded state, a hovering state or a flat state. However, the shaking of the rotating mechanism in the related art may cause the shaking of the structural members of the foldable display terminal. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a rotating mechanism and a foldable display terminal, which are used to improve the shaking of the rotating mechanism in the related art.

[0005] In order to achieve the above purpose, the present application provides the following solutions:

[0006] A rotating mechanism is provided, comprising a base and two door panel assemblies located on opposite sides of the base. The door panel assembly comprises a door panel body, the door panel body has a first arc-shaped slide groove, the base comprises a first slider matched with the first arc-shaped slide groove, and the first slider is installed in the first arc-shaped slide groove. Through the above arrangement, the base and the door panel assembly can achieve relative rotation, so that the rotating mechanism can be folded or unfolded.

[0007] Based on the above structure, at least one door panel assembly also includes a first extrusion member, which is installed on the base. The first extrusion member extrudes the door panel body along a first target direction, and the first target direction is perpendicular to the sliding direction of the first slider, and points to a side wall of the first slider facing the first arc-shaped slide groove. Here, the sliding direction of the first slider is also the extension direction of the first arc-shaped slide groove. Through the above arrangement, the first extrusion member has an extrusion effect on the door panel body, and the first extrusion member can squeeze the door panel body toward a side wall of the first arc-shaped slide groove, thereby reducing the gap between the first arc-shaped slide groove and the two opposite side walls of the first slider, that is, reducing the matching gap between the first slider and the first arc-shaped slide groove, which is beneficial to improve the shaking phenomenon of the rotating mechanism during use.

[0008] In some embodiments, the first extrusion member includes an elastic sheet, which is connected to the base and is in elastic contact with the door panel body. Since the elastic sheet can be elastically deformed, the elastic restoring force of the elastic sheet is applied to the door panel body along the first target direction, so that the matching clearance between the first slider and the first arc-shaped slide groove is reduced, thereby improving the shaking phenomenon of the rotating mechanism during use. At the same time, since the elastic sheet can be elastically deformed, there is elastic contact between the elastic sheet and the first slider, thereby preventing the first slider from getting stuck during rotation.

[0009] In some embodiments, the base further includes a first mounting groove, the side wall of the first mounting groove protrudes to form a first sliding block; the door panel body includes a side surface and a bottom surface, the side surface faces the side wall of the first mounting groove, and the side surface is recessed to form a 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 and the bottom surface of the first mounting groove. Through the above arrangement, the first extrusion member is prevented from occupying space outside the base, which is conducive to improving the compactness of the structure and realizing the miniaturization of the rotating mechanism.

[0010] In some embodiments, the elastic sheet includes a first elastic arm and a second elastic arm, the first elastic arm and the second elastic arm are connected, and the angle between the first elastic arm and the second elastic arm is an obtuse angle, and one of the first elastic arm and the second elastic arm is in elastic contact with the door panel body. When the first elastic arm is in elastic contact with the door panel body, the first elastic arm can play a role of squeezing the door panel body, and at the same time, the second elastic arm can play a role of buffering, so that the matching clearance between the first slider and the first arc-shaped slide groove is reduced, thereby improving the shaking phenomenon of the rotating mechanism during use.

[0011] In some embodiments, one end of one elastic arm facing away from the other elastic arm has a mounting hole, the side wall of the first mounting groove has a matching hole, and the first extrusion member further includes a pin, which is inserted into the mounting hole and the matching hole. Through the above arrangement, the elastic sheet can rotate relative to the pin, thereby realizing a rotatable connection between the elastic sheet and the base, which is beneficial to improving the buffering effect of the elastic sheet and further avoiding the jamming of the rotating mechanism during the rotation process.

[0012] In some embodiments, two fixed brackets are further included on opposite sides of the base, the fixed brackets have 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, and the central axis of the second arc-shaped slide groove is parallel to the central axis of the first arc-shaped slide groove. Through the above arrangement, the fixed bracket and the door panel assembly can achieve relative rotation, thereby driving the structural member connected to the fixed bracket to rotate relative to the door panel assembly.

[0013] Based on the above structure, at least one door panel assembly further includes a second extrusion member, which is mounted on the fixed bracket, and the second extrusion member extrudes the second slider along a second target direction, the second target direction is perpendicular to the sliding direction of the second slider, and points to a side wall of the second arc-shaped slide groove facing the second slider. Through the above arrangement, the second extrusion member extrudes the second slider toward a side wall of the second arc-shaped slide groove, thereby reducing the matching clearance between the second slider and the second arc-shaped slide groove, which is conducive to further improving the shaking phenomenon of the rotating mechanism during use.

[0014] In some embodiments, the second extrusion member includes a wear-resistant block, and the hardness of the wear-resistant block is less than the hardness of the fixed bracket. The above arrangement is conducive to achieving hard extrusion between the wear-resistant block and the second slider, and improving the phenomenon of jamming when the second slider rotates.

[0015] In some embodiments, the wear 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 slide groove. Since the roughness of the contact surface is less than the roughness of the second arc-shaped slide groove, the friction coefficient between the wear block and the second slider is reduced, which is conducive to improving the jamming phenomenon when the second slider rotates.

[0016] In some embodiments, the material of the wear block includes POM and / or PEEK. Among them, POM and PEEK have high wear resistance, which is conducive to preventing the second extrusion member from being worn after long-term use. At the same time, POM and PEEK also have self-lubricating properties, which is conducive to further reducing the friction coefficient between the wear block and the second slider, and further improving the rotation smoothness of the second slider.

[0017] In some embodiments, the second arc-shaped slide groove is recessed toward a side wall of the second sliding block to form a second installation groove, and at least part of the wear-resistant block is located in the second installation groove. Through the above arrangement, the wear-resistant block is connected to the fixed bracket.

[0018] In some embodiments, there is a communication opening between the second mounting groove and the second arc-shaped sliding groove, the wear-resistant block further includes a mating surface arranged opposite to the contact surface, and the area of ​​the communication opening is smaller than the area of ​​the mating surface. Through the above arrangement, since the area of ​​the communication opening is smaller than the area of ​​the mating surface, it is possible to prevent the wear-resistant block from falling off from the communication opening during the movement of the rotating 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 comprises the rotating mechanism in any of the above embodiments, as well as the first structural member, the second structural member and the flexible screen, the first structural member and the second structural member are connected to both sides of the rotating mechanism; the rotating mechanism 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, and the flexible screen is also connected to the rotating mechanism. The foldable display terminal provided in the embodiments of the present application comprises the rotating mechanism as described above, and therefore has all the above beneficial effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 A structural diagram of a foldable display terminal in a flat state provided by an embodiment of the present application;

[0022] Figure 3 A structural diagram of a foldable display terminal in a folded state provided by an embodiment of the present application;

[0023] Figure 4 A schematic diagram of assembling a rotating mechanism provided in an embodiment of the present application with a first structural member and a second structural member;

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

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

[0026] Figure 7 for Figure 6 A local enlarged view of M1 in FIG.

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

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

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

[0030] Fig.11 for Fig.10 A local enlarged view of M2 in FIG.

[0031] Fig.12 for Figure 5A local enlarged view of the N position in FIG.

[0032] Fig.13 A structural diagram of a wear-resistant block provided in an embodiment of the present application;

[0033] Fig.14 for Fig.13 Cross-sectional view of the wear-resistant block along the CC section line. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0035] In the following, the terms "first", "second", etc. are used only for convenience of description and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0036] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

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

[0038] The embodiment of the present application provides a foldable display terminal, wherein the foldable display terminal may be a mobile phone, a tablet computer (pad), a television, a smart wearable product (e.g., a smart watch, a smart bracelet), a virtual reality (VR) device, an augmented reality (AR) device, or other terminal products.

[0039] Figure 1 This is a structural diagram of a foldable display terminal provided in an embodiment of the present 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 screen.

[0040] As a self-luminous display, the AMOLED display screen does not need a backlight module (BLM). Therefore, when the base substrate in the AMOLED display screen is made of a flexible resin material, such as polyethylene terephthalate (PET), the AMOLED display screen can have a bendable property.

[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, and the rotating mechanism 10 is 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. Among them, the first structural member 21 and the second structural member 22 can be a shell or a middle frame structure in an electronic device. The first structural member 21 and the second structural member 22 can be used to carry the flexible screen 30, so that the flexible screen 30 is kept as flat as possible during use, and the non-display surface of the flexible screen 30 is protected.

[0042] A portion of the flexible screen 30 is fixed to the first structural member 21 through the adhesive layer 40, a portion is fixed to the second structural member 22 through the adhesive layer 40, and a portion is fixed to the rotating mechanism 10 through the adhesive layer 40. The adhesive layer 40 can be a thin film layer formed after coating with glue, and the embodiment of the present application does not limit the specific form of the adhesive layer 40. In some embodiments, other electronic components may be provided on the first structural member 21 and the second structural member 22, such as cameras, headphones, receivers, buttons, batteries, etc., and the embodiment of the present application does not limit other electronic components provided on the first structural member 21 and the second structural member 22.

[0043] The first structural member 21 and the second structural member 22 can rotate relative to the rotating mechanism 10 . Figure 2 A structural diagram of a foldable display terminal 1 provided in an embodiment of the present application in a flat state; Figure 3 This is a structural diagram of a foldable display terminal 1 in a folded state provided by an embodiment of the present application. 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 respectively, thereby driving the flexible screen 30 to fold or unfold. Figure 2As shown, when the 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 angle α between the first structural member 21 and the second structural member 22 is reduced to a preset angle, the flexible screen 30 can be in a hovering state. Figure 3 When the angle α between the first structural member 21 and the second structural member 22 is reduced to 0°, the flexible screen 30 is in a folded state.

[0044] Figure 4 Schematic diagram of the assembly of a rotating mechanism 10 provided in an embodiment of the present application with a first structural member 21 and a second structural member 22. 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, and the door panel assemblies 12 can rotate relative to the base 11. Among them, 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 brackets 13 located on opposite sides of the base 11, wherein the two fixed brackets 13 include a fixed bracket 13a located on the left side of the base 11 and a fixed bracket 13b located on the right side of the base 11. One fixed bracket 13a is connected to the first structural member 21 and is rotatably connected to one door panel assembly 12a; the other fixed bracket 13b is connected to the second structural member 22 and is rotatably connected to the other door panel assembly 12b. Further, 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.

[0045] Through the above arrangement, 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 door panel assembly 12 and the base 11 may form a revolving pair. For example, the door panel assembly 12 may have an arc-shaped slide groove, and correspondingly, the base 11 may have an arc-shaped slide column that matches the arc-shaped slide groove. When the arc-shaped slide column slides in the arc-shaped slide groove, the door panel assembly 12 and the base 11 may rotate relative to each other. However, due to certain errors in the processing of parts, there are processing deviations on the surface of the arc-shaped slide column or the arc-shaped slide groove. When the arc-shaped slide column is actually assembled into the arc-shaped slide groove, the gap between the arc-shaped slide column and the arc-shaped slide groove may increase, which will cause the door panel assembly 12 and the base 11 to be unstable, and then cause the rotating mechanism 10 to shake, resulting in a reduced user experience.

[0047] In some embodiments, in order to reduce the clearance between the rotating pairs, it is necessary to improve the machining accuracy of the parts, for example, it is necessary to limit the tolerance band of the parts to be less than or equal to 0.03 mm. However, as the machining accuracy of the parts is improved, the machining cost of the parts is also increased.

[0048] In some other embodiments, in order to reduce the matching clearance in the rotating pair, a classification assembly method is usually used for assembly. For example, according to the tolerance range of the arc slide, the arc slide can be divided into two gears: a small-sized slide and a large-sized slide. Correspondingly, according to the tolerance range of the arc chute, the arc chute can be divided into two gears: a small-sized slide and a large-sized slide. When performing the classification assembly, the small-sized slide is assembled with the small-sized chute, and the large-sized slide is assembled with the large-sized chute. However, this classification assembly method requires precise measurement of the parts to achieve classification, which increases the labor cost. At the same time, manual classification also has the phenomenon of wrong installation, which leads to a batch of parts that cannot match the gear, resulting in material stagnation.

[0049] In view of this, the rotating mechanism 10 provided in the embodiment of the present application further includes a pressing component for pressing the rotating pair, and the fitting clearance in the rotating pair is reduced by the pressing component.

[0050] Figure 5 A structural diagram of a rotating mechanism 10 provided in an embodiment of the present application; Figure 6 for Figure 5 The cross-sectional view of the rotating mechanism 10 along the AA section line. Figure 5 and Figure 6 As shown, the door panel assembly 12 includes a door panel body 121, the door panel body 121 has a first arc-shaped slide groove 122, the base 11 includes a first slider 111 that cooperates with the first arc-shaped slide groove 122, and 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 local enlarged view of M1 in FIG. Figure 8 for Figure 5 A cross-sectional view of the base 11 along the AA section line; Fig. 9 for Figure 5 The door panel assembly 12 is a cross-sectional view in the opposite direction of the AA section line. Figure 7 and Fig. 9 As shown, the first arc-shaped sliding groove 122 may include a first side wall 1211 and a second side wall 1212 that are arranged opposite to each other (the first side wall 1211 may be Figure 7The lower side wall of the first arc-shaped slide groove 122 and the second side wall 1212 can be Figure 7 The first side wall 1211 and the second side wall 1212 are both arc-shaped surfaces, and the first side wall 1211 and the second side wall 1212 are bent into an arc in the same direction.

[0052] Accordingly, if Figure 7 and Figure 8 As shown, the first sliding block 111 is generally an arc-shaped block. The first sliding block 111 may include a first sliding wall 1111 and a second sliding wall 1112 that are arranged opposite to each other (the first sliding wall 1111 may be Figure 7 The lower side wall of the first sliding block 111, the second sliding wall 1112 can be Figure 7 The first sliding wall 1111 is an arcuate surface matched with the first side wall 1211, and the second sliding wall 1112 is an arcuate surface matched with the second side wall 1212. Through the above arrangement, the first sliding block 111 can slide in the first arcuate slide groove 122, so that the base 11 and the door panel assembly 12 rotate relative to each other. Among them, the sliding direction S1 of the first sliding block 111 is the extension direction of the first arcuate slide groove 122.

[0053] When the first slider 111 is slidably disposed in the first arc-shaped slide groove 122, the first side wall 1211 is located on the side of the first slider 111 where the first slide wall 1111 is located, and the second side wall 1212 is located on the side of the first slider 111 where the second slide wall 1112 is located. In order to ensure the smoothness of the first slider 111 sliding in the first arc-shaped slide groove 122, the first slider 111 and the second arc-shaped slide groove 132 are usually clearance-fitted, such as Figure 7 As shown, there is a certain gap between the first side wall 1211 and the first sliding wall 1111 , and between the second side wall 1212 and the second sliding wall 1112 .

[0054] Fig.10 for Figure 5 The cross-sectional view of the rotating mechanism 10 along the BB cross-sectional line. Fig.10 As shown, in the rotating mechanism 10 provided in the embodiment of the present application, at least one door panel assembly 12 further includes a first extrusion member 14. In some embodiments, one of the two door panel assemblies 12 includes the first extrusion member 14, or each of the two door panel assemblies 12 includes the first extrusion member 14.

[0055] In some embodiments, the first extrusion member is mounted on the base 11. Fig.10 and Figure 8The base 11 may have a first mounting groove 112, and the first extrusion member 14 may be installed in the first mounting groove 112. The side wall 1121 of the first mounting groove may be raised to form a first sliding block 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 in the door panel body 121 can cooperate with the first sliding block 111. Fig. 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 the first arc-shaped slide groove 122. Accordingly, the first extrusion 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 extrusion member 14 occupying space outside 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 extrusion member 14 may also be installed on the side wall of the base 11, and accordingly, the side wall of the base 11 may be recessed to form the first installation groove 112. The embodiment of the present application does not specifically limit the installation position of the first extrusion member 14.

[0057] The first extrusion member 14 extrudes the door panel body 121 along the first target direction X, and the first target direction X is perpendicular to the sliding direction S1 of the first slider 111 and points to a side wall of the first slider 111 facing the first arc-shaped slide groove 122. Exemplarily, the first extrusion member 14 can extrude the bottom surface 124 of the door panel body, and through the extrusion of the door panel body 121 by the first extrusion member 14, the gap between the second sliding wall 1112 of the first slider 111 and the second side wall 1212 of the first arc-shaped slide groove 122 is reduced. When the extrusion force of the first extrusion member 14 on the door panel body 121 is large enough, the second sliding wall 1112 of the first slider 111 and the second side wall 1212 of the first arc-shaped slide groove 122 can achieve zero gap, which is conducive to improving 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 to the second side wall 1212.

[0058] To sum up, the first extrusion member 14 squeezes the door panel body 121 toward a 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 slide wall 1112 of the first slider 111, and also reducing the fitting gap between the first slider 111 and the first arc-shaped slide groove 122, which is beneficial to improving the shaking phenomenon of the rotating mechanism 10 during use.

[0059] Furthermore, the first mounting groove 112 includes two side walls arranged opposite to each other, each of which may have a first slider 111. Accordingly, the door panel body 121 includes two side surfaces arranged opposite to each other, each of which may have a first arc-shaped slide groove 122. An arc-shaped slide groove cooperates with a first slider 111, which is beneficial to improving 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 material of the elastic sheet 14a may include spring steel. Spring steel has good elasticity, can withstand heavy loads without causing plastic deformation, has high fatigue strength, and has a long service life under repeated loads; at the same time, spring steel also has certain toughness and plasticity, which can avoid sudden brittle fracture under the action of impact force.

[0061] Among them, the elastic sheet 14a can be connected to the base 11, and the elastic sheet 14a can be in elastic contact with the door panel body 121. As described in the above embodiment, the elastic sheet 14a can be located in 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 be in elastic contact with 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 can cause the elastic sheet 14a to produce elastic deformation. When the door panel body 121 rotates, the elastic sheet 14a undergoes elastic deformation. In some other embodiments, the two ends of the elastic sheet 14a can also be detachably connected to the base 11 respectively. For example, the two ends of the elastic sheet 14a can be fastened together with the side wall 1121 of the first mounting groove by threads, and the part of the elastic sheet 14a located at the center can be in elastic contact with 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 realize quick disassembly and assembly when replacing and repairing the elastic sheet 14a.

[0062] For example, since the elastic sheet 14a can be elastically deformed, the elastic restoring force of the elastic sheet 14a is applied to the door panel body 121 along the first target direction X, so that the matching clearance between the first slider 111 and the first arc-shaped slide groove 122 is reduced, thereby improving the shaking phenomenon of the rotating mechanism 10 during use. At the same time, since the elastic sheet 14a can be elastically deformed, the elastic sheet 14a and the first slider 111 are in elastic contact, thereby preventing the first slider 111 from getting stuck during the rotation process.

[0063] Based on the above structure, an interference fit can be achieved between the elastic sheet 14a and the door panel body 121. "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 interference amount between the elastic sheet 14a and the door panel body 121, the assembled elastic sheet 14a can always be in an elastically deformed state. Here, "interference amount" can be understood as the deformation amount of the elastic sheet 14a after elastic deformation. Fig.11 for Fig.10 A partial enlarged view of M2 in Figure 2. Fig.11 , the interference amount D1 between the elastic sheet 14a and the door panel body 121 can range from 0.05mm to 0.1mm. For example, the interference amount 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 amount 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 is conducive to ensuring the smoothness of the rotation of the door panel body 121. When the interference amount 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 is conducive to reducing the matching 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] It is understandable that due to the frequent use of the foldable display terminal 1, after the rotating mechanism 10 rotates multiple times, wear occurs between the first slider 111 and the first arcuate groove 122, so that the gap between the first slider 111 and the first arcuate groove 122 is further increased, thereby causing the shaking of the rotating mechanism 10 to intensify.

[0065] In the embodiment of the present 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 elastically deformed state. When the first slider 111 is worn, the elastic sheet 14a continues to squeeze the first slider 111 under the action of the elastic restoring force and still maintains an elastically deformed state, thereby improving the problem of increased shaking of the first slider 111 after wear.

[0066] Reference Fig.10The elastic sheet 14a may include a first elastic arm 141 and a second elastic arm 142, and the first elastic arm 141 and the second elastic arm 142 are connected. 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 be welded together. Furthermore, the angle between the first elastic arm 141 and the second elastic arm 142 is an obtuse angle. Fig.11 By setting the angle β between the first elastic arm 141 and the second elastic arm 142, it is helpful to adjust the elastic force of the elastic sheet 14a. At the same time, since the angle β between the first elastic arm 141 and the second elastic arm 142 is an obtuse angle, the elastic sheet 14a occupies a smaller space in the thickness direction of the base 11, which is helpful to realize the thinness of the rotating mechanism 10, and further to realize the thinness of the foldable display terminal 1.

[0067] Further, one of the first elastic arm 141 and the second elastic arm 142 is in contact with the door panel body 121. Fig.10 The elastic arm on the left side of the position may be the first elastic arm 141, located at Fig.10 The elastic arm on the right side of the position may be the second elastic arm 142. When the first elastic arm 141 is in elastic contact with the door panel body 121, the first elastic arm 141 can play a role in squeezing the door panel body 121, and at the same time, the second elastic arm 142 can play a role in buffering, so that the matching clearance between the first slider 111 and the first arc-shaped slide groove 122 is reduced, thereby improving the shaking phenomenon of the rotating mechanism 10 during use.

[0068] Based on the above structure, combined with Figure 8 and Fig.10 , one end of one elastic arm away from the other elastic arm may have a mounting hole 144, the side wall 1121 of the first mounting groove may have a matching hole 1123, and the first extrusion member 14 further includes a pin 143, and the pin 143 is inserted into the mounting hole 144 and the matching hole 1123. Through the above arrangement, the elastic sheet 14a can rotate relative to the pin 143, thereby realizing a rotatable connection between the elastic sheet 14a and the base 11, thereby facilitating the improvement of the buffering effect of the elastic sheet 14a, and further facilitating the prevention of the jamming of the rotating mechanism 10 during the rotation process.

[0069] Of course, the shape of the elastic sheet 14a may not be limited to the structure in the above-mentioned embodiment, and the embodiment of 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 a plurality of elastic arms, and each elastic arm can be roughly in a flat plate structure. For example, the elastic sheet 14a can include three elastic arms, wherein the elastic arm located in the middle position is used to elastically contact the door panel body 121. Alternatively, the elastic sheet 14a can also be roughly in an arc plate structure. Accordingly, the elastic sheet 14a can be rotatably connected to the side wall 1121 of the first mounting groove through the pin 143. In some other embodiments, the elastic sheet 14a can also be roughly in a flat plate structure. Accordingly, one end of the elastic sheet 14a can be welded to the side wall 1121 of the first mounting groove.

[0070] Fig.12 for Figure 5 A local enlarged view of the N in FIG. Fig.12 As shown, in some embodiments, the fixing bracket 13 may have a second arc-shaped sliding groove 132. Fig. 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 and the rotation axis between the fixing bracket 13 and the door panel assembly 12 are parallel to each other.

[0071] The fixing bracket 13 may be substantially a columnar structure, and the second arc-shaped slide groove 132 may be located on the side wall 131 of the fixing bracket 13. The second arc-shaped slide groove 132 may include a third side wall 1321 and a fourth side wall 1322 that are arranged opposite to each other (the third side wall 1321 may be Fig.12 The lower side wall of the second arc-shaped slot 132, the fourth side wall 1322 can be Fig.12 The third side wall 1321 and the fourth side wall 1322 are both arc-shaped surfaces, and the third side wall 1321 and the fourth side wall 1322 are bent into an arc in the same direction.

[0072] Reference Fig. 9 and Fig.12 The second sliding block 125 is connected to the door panel body 121. The second sliding block 125 may include a third sliding wall 1251 and a fourth sliding wall 1252 that are arranged opposite to each other (the third sliding wall 1251 may be Fig. 9 The lower side wall of the second sliding block 125, the fourth sliding wall 1252 can be Fig. 9The upper side wall of the second slider 125 in the door panel 121 is formed by sliding the second slider 125 in the door panel 121 and the upper side wall of the second slider 125 in the door panel 121. The third sliding wall 1251 is an arcuate surface matched with the third side wall 1321, and the fourth sliding wall 1252 is an arcuate surface matched with the fourth side wall 1322. Through the above arrangement, the second slider 125 can be slidably arranged in the second arcuate slide groove 132 to enable the door panel body 121 and the fixing bracket 13 to be rotatably connected. The sliding direction of the second slider 125 is the extension direction of the second arcuate slide groove 132.

[0073] It is understandable that the second sliding block 125 and the second arc-shaped sliding groove 132 also form a rotation pair. The accumulated gaps of multiple rotation pairs will aggravate the shaking of the rotating mechanism 10 and affect the user experience of the product.

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

[0075] The second extrusion member 15 is mounted on the fixed bracket 13, and the second extrusion member 15 extrudes the second slider 125 along the second target direction Y, which is perpendicular to the sliding direction S2 of the second slider 125 and points to a side wall of the second arc-shaped slide groove 132 facing the second slider 125. Here, the sliding direction S2 of the second slider 125 is the extension direction of the second arc-shaped slide groove 132. Fig. 9 and Fig.12 , the second extrusion member 15 can be located below the second slider 125, and the second extrusion member 15 can squeeze the third sliding wall 1251 of the second slider 125. Through the squeezing effect of the second extrusion 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 slide groove 132 is reduced. When the squeezing force of the second extrusion member 15 on the second slider 125 is large enough, 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 slide groove 132, which is conducive to improving 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 arrangement, the second extrusion member 15 squeezes the second slider 125 toward a side wall of the second arc-shaped slide groove 132, thereby reducing the fitting 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 Fig.12The fixing bracket 13 may include a second mounting groove 133, the second mounting groove 133 may be communicated with the second arc-shaped slide groove 132, and the second extrusion member 15 is installed in the second mounting groove 133, so that the second extrusion member 15 is connected to the fixing bracket 13. The second arc-shaped slide groove 132 is recessed toward a side wall of the second slider 125 to form the second mounting groove 133, and at least part of the second extrusion member 15 is located in the second mounting groove 133. For example, the third side wall 1321 of the second arc-shaped slide groove 132 may be recessed to form the second mounting groove 133, and a communication port 134 is provided between the second arc-shaped slide groove 132 and the second mounting groove 133, so that the second mounting groove 133 and the second arc-shaped slide groove 132 can be communicated through the communication port 134.

[0078] In some embodiments, the second extrusion 15 includes a wear block 15a. Fig.13 This is a structural diagram of a wear-resistant block 15a provided in an embodiment of the present application. Fig.13 As shown, the wear-resistant block 15 a can be made of a material with high wear resistance, so as to avoid serious wear of the second extrusion member 15 after long-term use, which affects the cooperation between the second extrusion member 15 and the second sliding block 125 .

[0079] Exemplarily, the wear-resistant block 15a further includes a contact surface 151 in contact with the second slider 125, and the contact surface 151 is located at one end of the wear-resistant block 15a away from the second mounting groove 133. Part 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 set accordingly according to the shape of the second slider 125. Fig.13 As shown, when the third sliding wall 1251 of the second sliding block 125 is an arc-shaped surface, the contact surface 151 can be an arc-shaped surface matched 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 in the second arc-shaped slide groove 132 of the fixed bracket 13, the two metal parts with relatively strong hardness come into contact with each other, so that the relative rotation between the two metal parts is stuck. In the embodiment of the present application, the hardness of the wear-resistant block 15a can be less than the hardness of the fixed bracket 13, which is conducive to achieving hard extrusion between the wear-resistant block 15a and the second slider 125, and improving the stuck phenomenon when the second slider 125 rotates.

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

[0082] In some embodiments, the material of the wear block 15a includes POM (polyoxymethylene) and / or PEEK (polyetheretherketone). POM and PEEK have high wear resistance, which is beneficial to prevent the second extrusion member 15 from being worn after long-term use. At the same time, POM and PEEK also have self-lubricating properties, which is beneficial to further reduce the friction coefficient between the wear block 15a and the second slider 125, and further improve the rotation smoothness 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 is elastically deformed. By adjusting the interference between the wear-resistant block 15a and the second slider 125, the assembled wear-resistant block 15a can always be in an elastically deformed state. Fig.14 for Fig.13 The cross-sectional view of the wear block 15a along the CC section line. Fig.14 "Interference" can be understood as the deformation of the wear-resistant block 15a after elastic deformation. The interference between the wear-resistant block 15a and the second slider 125 can range from 0.05mm to 0.1mm. For example, the interference 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 between the wear-resistant block 15a and the second slider 125 approaches 0.05mm, the deformation of the wear-resistant block 15a is small, that is, the elastic restoring force applied by the wear-resistant block 15a on the second slider 125 is small, which is conducive to ensuring the smoothness of the rotation of the second slider 125. When the interference between the wear-resistant block 15a and the second slider 125 approaches 0.1mm, the elastic restoring force applied by the wear-resistant block 15a on the second slider 125 is large, which is conducive to reducing the fitting clearance between the second slider 125 and the second arc-shaped slide groove 132, thereby improving the shaking phenomenon of the rotating mechanism 10 during use.

[0084] As described in the above embodiment, continue to refer to Fig.12, a connecting opening 134 is provided between the second mounting groove 133 and the second arc-shaped sliding groove 132. The wear-resistant block 15a also includes a mating surface 152 arranged opposite to the contact surface 151, and the area of ​​the connecting opening 134 is smaller than the area of ​​the mating surface 152. Exemplarily, the mating surface 152 of the wear-resistant block 15a is located at one end of the wear-resistant block 15a facing the groove 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 arranged opposite to each other. The wear-resistant block 15a can be roughly 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 accordingly according to the shape of the wear-resistant block 15a, so as to realize 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 groove bottom 133 of the second installation groove 133 .

[0085] Through the above arrangement, 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 off from 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 slide groove 132 is located on the side wall 131 of the fixing bracket 13. Since the second mounting groove 133 is formed by the depression of the third side wall 1321 of the second arc-shaped slide groove 132, the second mounting groove 133 is also located on the side wall. When the wear-resistant block 15a is installed in the second mounting groove 133, the wear-resistant block 15a can be embedded in the second mounting groove 133. Further, 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 be provided with the second installation groove 133 to realize the installation of the wear-resistant block 15a, and no other assembly parts are required. Through the above arrangement, the wear-resistant block 15a can be connected to the fixed bracket 13 without using an adhesive structure such as glue, which is beneficial to improving the installation efficiency of the second extrusion member 15. At the same time, through the above arrangement, the installation of the wear-resistant block 15a can be realized without adding other parts, which is beneficial to reducing the installation space of the wear-resistant block 15a and realizing the thinness of the 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 member (for example, the first structural member 21 or the second structural member 22), and part of the structure is located on one side of the side wall of the fixed bracket 13 on which the wear-resistant block 15a is installed. Through the above arrangement, the structure can also play a limiting effect, which is conducive to the wear-resistant block 15a being removed 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 extrusion member 14 may include the wear-resistant block 15a in the above embodiment. Similarly, the second extrusion member 15 may include the elastic sheet 14a in the above embodiment. In the rotating mechanism 10, the installation positions of the wear-resistant block 15a and the elastic sheet 14a may be interchangeable.

[0090] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A rotating mechanism, characterized in that: include: A base and two door panel assemblies located on opposite sides of the base, wherein the door panel assembly includes a door panel body, the door panel body has a first arc-shaped slide groove, and the base includes a first sliding block matched with the first arc-shaped slide groove, and the first sliding block is installed in the first arc-shaped slide groove; At least one of the door panel assemblies further includes a first extrusion member, which is mounted on the base and which extrudes the door panel body along a first target direction, wherein the first target direction is perpendicular to the sliding direction of the first slider and points to a side wall of the first slider facing the first arc-shaped slide groove.

2. The rotating mechanism according to claim 1, characterized in that: The first extrusion member includes an elastic sheet, the elastic sheet is connected to the base, and the elastic sheet is in elastic contact with the door panel body.

3. The rotating mechanism according to claim 2, characterized in that: The base also includes a first mounting groove, and the side wall of the first mounting groove protrudes to form the first sliding block; the door panel body includes a side surface and a bottom surface, the side surface faces the side wall of the first mounting groove, and the side surface 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.

4. The rotating mechanism according to claim 3, characterized in that: The elastic sheet includes a first elastic arm and a second elastic arm, the first elastic arm and the second elastic arm are connected, and the angle between the first elastic arm and the second elastic arm is an obtuse angle, and one of the first elastic arm and the second elastic arm is in elastic contact with the door panel body.

5. The rotating mechanism according to claim 4, characterized in that: One end of one of the elastic arms facing away from the other elastic arm has a mounting hole, the side wall of the first mounting slot has a matching hole, and the first extrusion member also includes a pin shaft, which is inserted into the mounting hole and the matching hole.

6. The rotating mechanism according to any one of claims 1 to 5, characterized in that: It also includes two fixed brackets located on opposite sides of the base, the fixed brackets have a second arc-shaped slide groove, and the door panel assembly also includes a second sliding block matched with the second arc-shaped slide groove, and the central axis of the second arc-shaped slide groove is parallel to the central axis of the first arc-shaped slide groove; At least one of the door panel assemblies also includes a second extrusion member, which is mounted on the fixed bracket. The second extrusion member extrudes the second slider along a second target direction, and the second target direction is perpendicular to the sliding direction of the second slider and points to a side wall of the second arc-shaped slide groove facing the second slider.

7. The rotating mechanism according to claim 6, characterized in that: The second extrusion member includes a wear-resistant block, and the hardness of the wear-resistant block is less than the hardness of the fixing bracket.

8. The rotating mechanism according to claim 7, characterized in that: The wear-resistant block comprises a contact surface in contact with the second sliding block, and the roughness of the contact surface is smaller than the roughness of the groove wall of the second arc-shaped sliding groove.

9. The rotating mechanism according to claim 7 or 8, characterized in that: The material of the wear-resistant block includes POM and / or PEEK.

10. The rotating mechanism according to any one of claims 7 to 9, characterized in that: A side wall of the second arc-shaped sliding groove is recessed toward the second sliding block to form a second installation groove, and at least a portion of the wear-resistant block is located in the second installation groove.

11. The rotating mechanism according to claim 10, characterized in that: A communication opening is provided between the second installation groove and the second arc-shaped sliding groove, and the wear-resistant block further comprises a matching surface arranged opposite to the contact surface, and an area of ​​the communication opening is smaller than an area of ​​the matching surface.

12. A foldable display terminal, characterized in that: comprising a rotating mechanism as claimed in any one of claims 1 to 11, and A first structural member and a second structural member, wherein the first structural member and the second structural member are connected to two 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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