Rotating mechanism and foldable display terminal

Abstract

A rotating mechanism (10) and a foldable display terminal (1), relating to the field of electronic products. The rotating mechanism comprises a base (11) and two door panel assemblies (12) located on two opposite sides of the base (11). The door panel assemblies (12) each comprise a door panel body (121), the door panel body (121) is provided with a first arc-shaped sliding slot (122), and the base comprises a first sliding piece (111) fitted with the first arc-shaped sliding slot (122), the first sliding piece (111) being mounted in the first arc-shaped sliding slot (122). At least one door panel assembly (12) further comprises a first pressing member (14), the first pressing member (14) being mounted on the base (11), the first pressing member (14) pressing a door panel body (121) in a first target direction (X), and the first target direction (X) being perpendicular to the sliding direction (S1) of a first sliding piece (111) and pointing to a sidewall of the first sliding piece (111) facing the first arc-shaped sliding slot (122). The first pressing member (14) has an effect of pressing the door panel body (121), and the first pressing member (14) can press the door panel body (121) towards a sidewall of the first arc-shaped sliding slot (122), so that the fitting clearance between the first sliding piece (111) and the first arc-shaped sliding slot (122) is reduced, facilitating the mitigation of the shaking of the rotating mechanism during use.

Description

Rotating mechanism and foldable display terminal

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on September 22, 2023, with application number 202311244120.1 and application name “Rotation Mechanism and Foldable Display Terminal”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] 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

[0003] 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 a major evolutionary direction for future smart terminal devices. When unfolded, foldable display terminals can provide a larger display area, improving the viewing experience. When folded, foldable display terminals can be compact, making them easier to carry.

[0004] A foldable display terminal includes at least a flexible screen, two structural members supporting the flexible screen, and a rotating mechanism. The two structural members are connected to either side of the rotating mechanism. During actual use, the rotating mechanism rotates the two structural members to position the foldable display terminal in a folded, hovering, or flat state. However, the wobbling of the rotating mechanism in related art can cause the structural members of the foldable display terminal to wobble.

[0005] Summary of the Invention

[0006] 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.

[0007] In order to achieve the above objectives, the present invention provides the following solutions:

[0008] A rotation mechanism is provided, comprising a base and two door panel assemblies located on opposite sides of the base. The door panel assemblies include a door panel body having a first arcuate slot, and the base includes a first slider that engages with the first arcuate slot and is mounted in the first arcuate slot. This arrangement enables relative rotation between the base and the door panel assemblies, thereby folding or unfolding the rotation mechanism.

[0009] Based on the above structure, at least one door panel assembly further includes a first extrusion member, which is mounted on the base. The first extrusion member extrudes 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 side wall of the first slider facing the first arcuate slot. Here, the sliding direction of the first slider is also the extension direction of the first arcuate slot. 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 arcuate slot, thereby reducing the gap between the first arcuate slot and the two opposite side walls of the first slider, that is, reducing the fitting clearance between the first slider and the first arcuate slot, which is beneficial to improving the phenomenon of shaking of the rotating mechanism during use.

[0010] In some embodiments, the first extrusion member includes an elastic sheet connected to the base and in elastic contact with the door panel body. Because the elastic sheet can elastically deform, its elastic restoring force is applied to the door panel body in a first target direction, reducing the clearance between the first slider and the first arcuate slot, thereby reducing wobble of the rotation mechanism during use. Furthermore, because the elastic sheet can elastically deform, elastic contact is established between the elastic sheet and the first slider, preventing the first slider from becoming stuck during rotation.

[0011] In some embodiments, the base further includes a first mounting groove, the sidewalls of which are raised to form a first sliding block. The door panel body includes a side surface and a bottom surface, the side surface facing the sidewalls of the first mounting groove and recessed to form a first arcuate sliding groove, and the bottom surface facing the bottom wall of the first mounting groove. The elastic sheet is located between the bottom wall and the bottom surface of the first mounting groove. This arrangement prevents the first extrusion member from occupying space outside the base, thereby improving the compactness of the structure and miniaturizing the rotating mechanism.

[0012] 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 being connected to each other at an obtuse angle, and one of the first elastic arm and the second elastic arm being 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 exert pressure on 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 arcuate slot, thereby reducing the shaking of the rotating mechanism during use.

[0013] In some embodiments, one end of one elastic arm, facing away from the other elastic arm, has a mounting hole, a sidewall of the first mounting slot has a mating hole, and the first extruded member further includes a pin that extends through both the mounting hole and the mating hole. This arrangement allows the elastic sheet to rotate relative to the pin, thereby achieving a rotatable connection between the elastic sheet and the base, thereby enhancing the cushioning effect of the elastic sheet and further preventing the rotating mechanism from becoming stuck during rotation.

[0014] In some embodiments, the door panel assembly further includes two fixed brackets located on opposite sides of the base, each bracket having a second curved slot. The door panel assembly further includes a second slider that engages with the second curved slot, with the central axis of the second curved slot being parallel to the central axis of the first curved slot. This arrangement allows the fixed brackets and the door panel assembly to rotate relative to each other, thereby driving the structural member connected to the fixed brackets to rotate relative to the door panel assembly.

[0015] Based on the above structure, at least one door panel assembly further includes a second extrusion member mounted on a fixed bracket. The second extrusion member extrudes the second slider in a second target direction, the second target direction being perpendicular to the sliding direction of the second slider and directed toward a side wall of the second curved chute facing the second slider. Through this arrangement, the second extrusion member presses the second slider toward a side wall of the second curved chute, thereby reducing the clearance between the second slider and the second curved chute, further reducing the wobble of the rotating mechanism during use.

[0016] In some embodiments, the second extrusion member includes a wear-resistant block having a hardness less than that of the fixed bracket. The above arrangement facilitates hard extrusion between the wear-resistant block and the second slider, thereby improving the phenomenon of the second slider getting stuck when rotating.

[0017] 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 curved chute. Because the roughness of the contact surface is less than the roughness of the second curved chute, the coefficient of friction between the wear block and the second slider is reduced, which helps to reduce the sticking of the second slider during rotation.

[0018] In some embodiments, the wear block comprises POM and / or PEEK. POM and PEEK are highly wear-resistant, helping to prevent wear of the second extruded member after long-term use. Furthermore, POM and PEEK are self-lubricating, further reducing the coefficient of friction between the wear block and the second slider, thereby improving the smoothness of the second slider's rotation.

[0019] In some embodiments, the second arc-shaped sliding groove is recessed toward a side wall of the second sliding block to form a second mounting groove, and at least a portion of the wear-resistant block is located in the second mounting groove. Through the above arrangement, the wear-resistant block is connected to the fixing bracket.

[0020] In some embodiments, a communication opening is provided between the second mounting groove and the second arcuate sliding groove, and the wear-resistant block further includes a mating surface disposed opposite the contact surface, with the area of ​​the communication opening being smaller than that of the mating surface. This arrangement, because the area of ​​the communication opening is smaller than that of the mating surface, prevents the wear-resistant block from falling out of the communication opening during movement of the rotating mechanism, thereby improving connection reliability and structural stability.

[0021] In some embodiments, the rotation mechanism further comprises the rotation mechanism of any of the above embodiments, as well as a first structural member, a second structural member, and a flexible screen, wherein the first structural member and the second structural member are connected to opposite sides of the rotation mechanism; the flexible screen of the rotation mechanism 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 rotation mechanism. The foldable display terminal provided in the embodiments of the present application includes the above-described rotation mechanism, and thus has all the above-described beneficial effects, which will not be further elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a structural diagram of a foldable display terminal provided in an embodiment of the present application;

[0023] FIG2 is a structural diagram of a foldable display terminal in a flat state provided by an embodiment of the present application;

[0024] FIG3 is a structural diagram of a foldable display terminal in a folded state provided by an embodiment of the present application;

[0025] FIG4 is a schematic diagram of the assembly of a rotating mechanism with a first structural member and a second structural member provided by an embodiment of the present application;

[0026] FIG5 is a structural diagram of a rotation mechanism provided in an embodiment of the present application;

[0027] FIG6 is a cross-sectional view of the rotating mechanism along section line AA in FIG5 ;

[0028] FIG7 is a partial enlarged view of M1 in FIG6 ;

[0029] FIG8 is a cross-sectional view of the base along section line AA in FIG5 ;

[0030] FIG9 is a cross-sectional view of the door panel assembly in FIG5 taken along the opposite direction of the AA section line;

[0031] FIG10 is a cross-sectional view of the rotating mechanism along section line BB in FIG5 ;

[0032] FIG11 is a partial enlarged view of M2 in FIG10 ;

[0033] FIG12 is a partial enlarged view of point N in FIG5 ;

[0034] FIG13 is a structural diagram of a wear-resistant block provided in an embodiment of the present application;

[0035] FIG14 is a cross-sectional view of the wear-resistant block in FIG13 along the CC section line. DETAILED DESCRIPTION

[0036] 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 the embodiments.

[0037] In the following, the terms "first," "second," etc., are used for descriptive convenience only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0038] In the embodiments of this 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 this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0039] In the embodiments of the present application, directional indications such as up, down, left, right, front, and back, used to explain the structure and movement of various components of 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 positions changes, these directional indications will also change accordingly.

[0040] The present invention provides a foldable display terminal, which can be a mobile phone, a tablet computer, 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.

[0041] Figure 1 is a structural diagram of a foldable display terminal provided in an embodiment of the present application. As shown in Figure 1, 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.

[0042] AMOLED displays are self-luminous and do not require a backlight module (BLM). Therefore, when the base substrate of an AMOLED display is made of a flexible resin material, such as polyethylene terephthalate (PET), the AMOLED display can be bendable.

[0043] In addition, continuing 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 support the flexible screen 30, so that the flexible screen 30 remains as flat as possible during use and protects the non-display surface of the flexible screen 30.

[0044] 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 an adhesive layer 40, and a portion is fixed to the rotating mechanism 10 via an adhesive layer 40. The adhesive layer 40 can be a thin film layer formed by coating with glue, and the present embodiment of the application does not limit the specific form of the adhesive layer 40. In some embodiments, other electronic components such as cameras, headphones, receivers, buttons, batteries, etc. can also be provided on the first structural member 21 and the second structural member 22. The present embodiment of the application does not limit the other electronic components provided on the first structural member 21 and the second structural member 22.

[0045] The first structural member 21 and the second structural member 22 can rotate relative to the rotating mechanism 10. Figure 2 is a structural diagram of a foldable display terminal 1 provided in an embodiment of the present application in a flat state; Figure 3 is a structural diagram of a foldable display terminal 1 provided in an embodiment of the present application in a folded state. In conjunction with Figures 2 and 3, the first structural member 21 and the second structural member 22 can respectively rotate along the axis O of the rotating mechanism 10, thereby driving the flexible screen 30 to fold or unfold. As shown in Figure 2, 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 decreases to a predetermined angle, the flexible screen 30 can be in a hovering state. Furthermore, referring to Figure 3, when the 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.

[0046] Figure 4 is a 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, respectively. As shown in Figure 4, 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 are capable of rotating 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 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 rotationally connected to one door panel assembly 12a; the other fixed bracket 13b is connected to the second structural member 22 and is rotationally 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 fixing bracket 13 and the door panel assembly 12 .

[0047] 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.

[0048] 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 arcuate slot, and correspondingly, the base 11 may have an arcuate slide column that matches the arcuate slot. When the arcuate slide column slides in the arcuate slot, 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 may be processing deviations on the surface of the arcuate slide column or the arcuate slot. When the arcuate slide column is actually assembled into the arcuate slot, the gap between the arcuate slide column and the arcuate slot may increase, which will lead to unstable cooperation between the door panel assembly 12 and the base 11, and further cause the rotating mechanism 10 to shake, resulting in a reduced user experience.

[0049] In some embodiments, to reduce the clearance between the revolving pairs, it is necessary to improve the machining accuracy of the components, for example, to limit the tolerance band of the components to less than or equal to 0.03 mm. However, as the machining accuracy of the components is improved, the processing cost of the components also increases.

[0050] In some other embodiments, in order to reduce the fitting clearance within 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: small-sized slide and large-sized slide. Correspondingly, according to the tolerance range of the arc chute, the arc chute can be divided into two gears: small-sized chute and large-sized chute. When performing 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 parts to achieve classification, which increases labor costs. 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.

[0051] In view of this, the rotating mechanism 10 provided in the embodiment of the present application further includes an extrusion component for extruding the rotating pair, so that the fitting clearance in the rotating pair is reduced by the extrusion component.

[0052] FIG5 is a structural diagram of a rotation mechanism 10 provided in an embodiment of the present application; FIG6 is a cross-sectional view of the rotation mechanism 10 in FIG5 along section line AA. As shown in FIG5 and FIG6, the door panel assembly 12 includes a door panel body 121 having a first arcuate slot 122. The base 11 includes a first slider 111 that cooperates with the first arcuate slot 122. The first slider 111 is mounted in the first arcuate slot 122. When the first slider 111 slides along the first arcuate slot 122, the first slider 111 can drive the base 11 to rotate relative to the door panel assembly 12.

[0053] FIG7 is a partial enlarged view of the portion M1 in FIG6 ; FIG8 is a cross-sectional view of the base 11 in FIG5 along the AA section line; and FIG9 is a cross-sectional view of the door panel assembly 12 in FIG5 along the opposite direction of the AA section line. As shown in FIG7 and FIG9 , the first curved chute 122 may include a first side wall 1211 and a second side wall 1212 disposed opposite to each other (the first side wall 1211 may be the lower side wall of the first curved chute 122 in FIG7 , and the second side wall 1212 may be the upper side wall of the first curved chute 122 in FIG7 ). Both the first side wall 1211 and the second side wall 1212 are curved surfaces, and the first side wall 1211 and the second side wall 1212 are curved in the same direction.

[0054] Accordingly, as shown in Figures 7 and 8 , 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 each other (the first sliding wall 1111 may be the lower side wall of the first slider 111 in Figure 7 , and the second sliding wall 1112 may be the upper side wall of the first slider 111 in Figure 7 ). The first sliding wall 1111 is an arc-shaped surface that mates with the first side wall 1211, and the second sliding wall 1112 is an arc-shaped surface that mates with the second side wall 1212. With this arrangement, the first slider 111 can slide within the first arc-shaped slot 122, allowing the base 11 and the door panel assembly 12 to rotate relative to each other. The sliding direction S1 of the first slider 111 corresponds to the direction in which the first arc-shaped slot 122 extends.

[0055] When the first slider 111 slides in the first arcuate slot 122, the first sidewall 1211 is located on the side of the first slider 111 where the first sliding wall 1111 is located, and the second sidewall 1212 is located on the side of the first slider 111 where the second sliding wall 1112 is located. To ensure smooth sliding of the first slider 111 in the first arcuate slot 122, the first slider 111 and the second arcuate slot 132 are generally fitted with a clearance fit. As shown in FIG7 , 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.

[0056] FIG10 is a cross-sectional view of the rotation mechanism 10 along section line BB in FIG5 . As shown in FIG10 , in the rotation mechanism 10 provided in the embodiment of the present application, at least one door panel assembly 12 further includes a first extruded member 14. In some embodiments, one of the two door panel assemblies 12 includes the first extruded member 14, or each of the two door panel assemblies 12 includes the first extruded member 14.

[0057] In some embodiments, the first extrusion member is mounted on the base 11. Referring to Figures 10 and 8, the base 11 may have a first mounting groove 112, and the first extrusion member 14 may be mounted in the first mounting groove 112. The side wall 1121 of the first mounting groove may be raised 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 slide groove 122 located on the door panel body 121 can cooperate with the first slider 111. In conjunction with 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 the first arc-shaped slide groove 122. Accordingly, the first extrusion member 14 can be located between the bottom surface 124 of the door panel body 121 and the bottom wall 1122 of the first mounting groove to avoid the first extrusion member 14 occupying space outside the base 11, which is beneficial to improving the compactness of the structure and realizing the miniaturization of the rotating mechanism 10.

[0058] In some other embodiments, the first extrusion member 14 may also be installed on the side wall of the base 11. 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.

[0059] The first extruding member 14 extrudes the door panel body 121 along a first target direction X, which is perpendicular to the sliding direction S1 of the first slider 111 and points toward a sidewall of the first slider 111 facing the first curved slot 122. For example, the first extruding member 14 can extrude the bottom surface 124 of the door panel body. The extrusion of the door panel body 121 by the first extruding member 14 reduces the gap between the second sliding wall 1112 of the first slider 111 and the second sidewall 1212 of the first curved slot 122. When the extrusion force of the first extruding member 14 on the door panel body 121 is sufficiently strong, zero clearance can be achieved between the second sliding wall 1112 of the first slider 111 and the second sidewall 1212 of the first curved slot 122, thereby reducing the shaking 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 toward the second sidewall 1212.

[0060] To sum up, the first extrusion member 14 squeezes the door panel body 121 toward 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 slide wall 1112 of the first slider 111, and also reducing the fitting clearance 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.

[0061] 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.

[0062] In some embodiments, the first extruded member 14 may include an elastic sheet 14a. For example, 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. Furthermore, spring steel has a certain degree of toughness and plasticity, which can prevent sudden brittle fracture under impact.

[0063] 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 elastically deform. When the door panel body 121 rotates, the elastic sheet 14a undergoes elastic deformation. In some other embodiments, the ends of the elastic sheet 14a can be detachably connected to the base 11. For example, the 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 can be in elastic contact with the bottom surface 124 of the door panel body. The removable connection between the elastic piece 14a and the base 11 facilitates quick disassembly and assembly when replacing or repairing the elastic piece 14a.

[0064] For example, because the elastic sheet 14a can elastically deform, its elastic restoring force is applied to the door panel body 121 along the first target direction X, reducing the clearance between the first slider 111 and the first arcuate slot 122, thereby reducing the shaking of the rotation mechanism 10 during use. Furthermore, because the elastic sheet 14a can elastically deform, elastic contact is established between the elastic sheet 14a and the first slider 111, preventing the first slider 111 from becoming stuck during rotation.

[0065] Based on the above structure, an interference fit can be achieved between the elastic sheet 14a and the door panel main body 121. "Interference fit" means that the elastic sheet 14a is in contact with the door panel main body 121, and the elastic sheet 14a undergoes elastic deformation. By adjusting the interference between the elastic sheet 14a and the door panel main body 121, the elastic sheet 14a can be always in an elastically deformed state after assembly. Here, "interference" can be understood as the amount of deformation of the elastic sheet 14a after elastic deformation. Figure 11 is a partial enlarged view of M2 in Figure 10. Referring to Figure 11, the interference D1 between the elastic sheet 14a and the door panel main body 121 can range from 0.05mm to 0.1mm. For example, the interference D1 between the elastic sheet 14a and the door panel main body 121 can be 0.05mm, 0.07mm, 0.09mm or 0.1mm. When the interference D1 between the elastic sheet 14a and the door panel body 121 approaches 0.05 mm, the deformation of the elastic sheet 14a is small, that is, the elastic restoring force exerted by the elastic sheet 14a on the door panel body 121 is small, which helps ensure the smooth rotation of the door panel body 121. When the interference D1 between the elastic sheet 14a and the door panel body 121 approaches 0.1 mm, the elastic restoring force exerted by the elastic sheet 14a on the door panel body 121 is large, which helps reduce the fitting clearance between the first slider 111 and the first arcuate groove 122, thereby improving the shaking phenomenon of the rotating mechanism 10 during use.

[0066] 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 arc-shaped slide groove 122, so that the gap between the first slider 111 and the first arc-shaped slide groove 122 is further increased, thereby causing the shaking of the rotating mechanism 10 to intensify.

[0067] 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.

[0068] Referring to Figure 10 , the elastic sheet 14a may include a first elastic arm 141 and a second elastic arm 142, which are connected to each other. 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. Referring to Figure 11 , setting the angle β between the first elastic arm 141 and the second elastic arm 142 facilitates adjusting the elastic force of the elastic sheet 14a. Furthermore, because the angle β between the first elastic arm 141 and the second elastic arm 142 is an obtuse angle, the elastic sheet 14a occupies less space in the thickness direction of the base 11, facilitating a thinner and lighter rotating mechanism 10, and thereby, a thinner and lighter foldable display terminal 1.

[0069] Furthermore, one of the first elastic arm 141 and the second elastic arm 142 is in contact with the door panel body 121. For example, the elastic arm located on the left side in the position shown in FIG10 may be the first elastic arm 141, and the elastic arm located on the right side in the position shown in FIG10 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 squeeze the door panel body 121. At the same time, the second elastic arm 142 can act as a buffer to reduce the clearance between the first slider 111 and the first arc-shaped slot 122, thereby improving the shaking phenomenon of the rotating mechanism 10 during use.

[0070] Based on the above structure, in conjunction with Figures 8 and 10, one end of one elastic arm facing 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, which is inserted into the mounting hole 144 and the matching hole 1123. Through the above arrangement, the elastic piece 14a can rotate relative to the pin 143, thereby achieving a rotatable connection between the elastic piece 14a and the base 11, thereby facilitating an enhanced cushioning effect of the elastic piece 14a and further preventing the rotating mechanism 10 from becoming stuck during rotation.

[0071] 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 may also be bent into a plurality of elastic arms, and each elastic arm may be roughly a flat plate structure. 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 may also be roughly an arc-shaped plate structure. Accordingly, the elastic sheet 14a may 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 may also be roughly a flat plate structure. Accordingly, one end of the elastic sheet 14a may be welded to the side wall 1121 of the first mounting groove.

[0072] FIG12 is a partial enlarged view of point N in FIG5 . As shown in FIG12 , in some embodiments, the fixed bracket 13 may have a second curved slot 132. Accordingly, in conjunction with FIG9 , the door panel assembly 12 may further include a second slider 125 that cooperates with the second curved slot 132. The central axis of the second curved slot 132 is parallel to the central axis of the first curved slot 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.

[0073] The fixing bracket 13 may be substantially cylindrical in structure, and the second curved chute 132 may be located on the side wall 131 of the fixing bracket 13. The second curved chute 132 may include a third side wall 1321 and a fourth side wall 1322 that are disposed opposite each other (the third side wall 1321 may be the lower side wall of the second curved chute 132 in FIG. 12 , and the fourth side wall 1322 may be the upper side wall of the second curved chute 132 in FIG. 12 ). Both the third side wall 1321 and the fourth side wall 1322 are curved surfaces, and the third side wall 1321 and the fourth side wall 1322 are curved in the same direction.

[0074] Referring to Figures 9 and 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 (the third sliding wall 1251 may be the lower side wall of the second slider 125 in Figure 9 , and the fourth sliding wall 1252 may be the upper side wall of the second slider 125 in Figure 9 ). The third sliding wall 1251 is a curved surface that mates with the third side wall 1321 , and the fourth sliding wall 1252 is a curved surface that mates with the fourth side wall 1322 . With this arrangement, the second slider 125 can slide within the second curved slot 132 to provide a rotational connection between the door panel body 121 and the fixed bracket 13. The sliding direction of the second slider 125 corresponds to the extension direction of the second curved slot 132 .

[0075] It is understandable that the second slider 125 and the second arc-shaped slot 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.

[0076] 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.

[0077] The second extrusion member 15 is mounted on the fixed bracket 13. The second extrusion member 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 toward a sidewall of the second curved chute 132 facing the second slider 125. Here, the sliding direction S2 of the second slider 125 is the extension direction of the second curved chute 132. Referring to Figures 9 and 12, the second extrusion member 15 can be located below the second slider 125 and can squeeze the third sliding wall 1251 of the second slider 125. The squeezing action of the second extrusion member 15 on the second slider 125 reduces the gap between the fourth sliding wall 1252 of the second slider 125 and the fourth sidewall 1322 of the second curved chute 132. When the squeezing force exerted by the second extruding member 15 on the second slider 125 is sufficiently large, zero clearance can be achieved between the fourth sliding wall 1252 of the second slider 125 and the fourth sidewall 1322 of the second arc-shaped sliding groove 132, thereby reducing the shaking 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 sidewall 1322.

[0078] To sum up, through the above-mentioned setting, 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.

[0079] Continuing with FIG. 12 , the fixed bracket 13 may include a second mounting groove 133, which may communicate with the second curved chute 132. The second extrusion member 15 is mounted within the second mounting groove 133 to connect the second extrusion member 15 to the fixed bracket 13. The second curved chute 132 is recessed toward one sidewall of the second slider 125 to form the second mounting groove 133, with at least a portion of the second extrusion member 15 positioned within the second mounting groove 133. For example, a third sidewall 1321 of the second curved chute 132 may be recessed to form the second mounting groove 133, and a communication port 134 may be defined between the second curved chute 132 and the second mounting groove 133, allowing communication between the second mounting groove 133 and the second curved chute 132 via the communication port 134.

[0080] In some embodiments, the second extruded member 15 includes a wear-resistant block 15a. Figure 13 illustrates the structure of a wear-resistant block 15a according to an embodiment of the present application. As shown in Figure 13, the wear-resistant block 15a can be made of a material with high wear resistance, thereby preventing the second extruded member 15 from wearing severely after long-term use, which could affect the fit between the second extruded member 15 and the second slider 125.

[0081] Exemplarily, the wear-resistant block 15a further includes a contact surface 151 for contacting the second slider 125. The contact surface 151 is located at the end of the wear-resistant block 15a facing 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 arcuate 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 configured accordingly based on the shape of the second slider 125. As shown in FIG13 , when the third sliding wall 1251 of the second slider 125 is an arcuate surface, the contact surface 151 can be an arcuate surface that cooperates with the third sliding wall 1251.

[0082] It is understood that the fixed bracket 13 and the second slider 125 are typically made of metal. When the second slider 125 slides within the second arcuate groove 132 of the fixed bracket 13, the two relatively hard metal parts come into contact, causing the two metal parts to become stuck during relative rotation. In this embodiment of the present application, the hardness of the wear-resistant block 15a can be less than that of the fixed bracket 13, which facilitates hard compression between the wear-resistant block 15a and the second slider 125 and reduces the sticking phenomenon during the rotation of the second slider 125.

[0083] Furthermore, the roughness of the contact surface 151 can be less than the roughness of the groove wall of the second arcuate groove 132. Since the roughness of the contact surface 151 is less than that of the second arcuate groove 132, the friction coefficient between the wear-resistant block 15a and the second slider 125 is further reduced, which helps to improve the jamming phenomenon of the second slider 125 during rotation.

[0084] 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 of the second extruded member 15 after long-term use. POM and PEEK are also self-lubricating, which helps further reduce the friction coefficient between the wear-resistant block 15a and the second slider 125, further improving the smoothness of the second slider 125's rotation.

[0085] 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 be in an elastically deformed state. Figure 14 is a cross-sectional view of the wear-resistant block 15a in Figure 13 along the CC section line. Referring to Figure 14, "interference" can be understood as the deformation amount of the wear-resistant block 15a after elastic deformation. Among them, 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 exerted by the wear-resistant block 15a on the second slider 125 is small, which is conducive to ensuring the smooth 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 exerted 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 groove 132, thereby improving the shaking phenomenon of the rotating mechanism 10 during use.

[0086] As described in the above embodiment, with continued reference to FIG12 , a communication opening 134 is provided between the second mounting groove 133 and the second arc-shaped slide groove 132. The wear-resistant block 15a further includes a mating surface 152 arranged opposite to the contact surface 151, and the area of ​​the communication 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 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 groove bottom 133 of the second installation groove 133 .

[0087] 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.

[0088] As described in the above embodiment, the second arcuate groove 132 is located on the sidewall 131 of the fixed bracket 13. Since the second mounting groove 133 is formed by a recess in the third sidewall 1321 of the second arcuate groove 132, the second mounting groove 133 is also located on this sidewall. 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. Furthermore, the wear-resistant block 15a can form an interference fit with the second mounting groove 133.

[0089] It is understood that the fixing bracket 13 only needs to be provided with the second mounting groove 133 to achieve the installation of the wear-resistant block 15a, and no other assembly parts are required. This arrangement allows the wear-resistant block 15a to be connected to the fixing bracket 13 without the use of adhesive structures such as glue, which helps to improve the installation efficiency of the second extrusion member 15. Furthermore, this arrangement allows the wear-resistant block 15a to be installed without the need for additional parts, which helps to reduce the installation space of the wear-resistant block 15a and achieve a lighter and thinner rotating mechanism 10.

[0090] Furthermore, after the wear-resistant block 15a is inserted into the second mounting groove 133, the fixed bracket 13 can be connected to the corresponding structural member (e.g., the first structural member 21 or the second structural member 22), with part of the structure positioned on one side of the sidewall of the fixed bracket 13 to which the wear-resistant block 15a is mounted. This arrangement also serves as a position limiter, facilitating the removal of the wear-resistant block 15a from the sidewall of the fixed bracket 13, thereby further improving the reliability of the connection and the stability of the structural movement.

[0091] 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.

[0092] 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 changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention are intended to be covered by the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection 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.

Images