Folding hinge, integrated folding hinge, hinge assembly, and folding electronic device

Abstract

Disclosed herein are a folding hinge, an integrated folding hinge, a hinge assembly, and a folding electronic device. The folding hinge comprises: a fixed base; a rotating arm assembly, having a first rotating arm provided with a first rotation axis and a second rotating arm provided with a second rotation axis; and a conversion arm assembly, having a first conversion arm provided with a first central axis and a second conversion arm provided with a second central axis. The first rotation axis and the second rotation axis are located in a first plane, and the first center axis and the second center axis are located in a second plane, and the second plane is offset from the first plane. A first distance is formed between the first rotation axis and the second rotation axis, and a second distance is formed between the first center axis and the second center axis, the first distance being larger than the second distance.

Description

Folding hinge, integrated folding hinge, hinge assembly, and folding electronic device Technical Field

[0001] The present disclosure belongs to the technical field of foldable electronic devices, and in particular relates to a foldable hinge, an integrated foldable hinge, a hinge assembly, and a foldable electronic device. Background Art

[0002] With the advancement of technology, the form factors of smart terminal devices have undergone tremendous changes, evolving from flat and curved screens to today's foldable screens. Flexibility and foldability have become the trend in the development of smart terminal devices. Currently, foldable screens are mainly categorized as inward-folding, outward-folding, and scroll-shaped. Regardless of the folding solution, the hinge design under the screen is an unavoidable challenge. How to utilize hinge design to prevent damage to the foldable screen during folding and unfolding is a pressing issue in this field.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0004] Summary of the Invention

[0005] By utilizing one or more embodiments of the present disclosure, the technical problem of the flexible display module being easily damaged during folding and unfolding is solved to a certain extent. To this end, the present disclosure provides a folding hinge, an integrated folding hinge, a hinge assembly, and a folding electronic device.

[0006] A folding hinge provided by an embodiment of the present disclosure includes: a fixed base; a rotating arm assembly, the rotating arm assembly including a first rotating arm and a second rotating arm; the first end of the first rotating arm is rotatably arranged on the fixed base, and the first rotating arm has a first rotating axis; the first end of the second rotating arm is rotatably arranged on the fixed base, and the second rotating arm has a second rotating axis; and a conversion arm assembly, the conversion arm assembly including a first conversion arm and a second conversion arm, the first end of the first conversion arm is rotatably arranged on the fixed base, and the first conversion arm has a first central axis; the first end of the second conversion arm is rotatably arranged on the fixed base, and the second conversion arm has a second central axis; wherein, the first rotating axis and the second rotating axis are located in a first plane, the first central axis and the second central axis are located in a second plane, and the second plane is misaligned with the first plane; there is a first distance between the first rotating axis and the second rotating axis, and there is a second distance between the first central axis and the second central axis, and the first distance is greater than the second distance.

[0007] In some embodiments, the first rotation axis, the second rotation axis, the first central axis, and the second central axis are parallel to each other, and the first plane is parallel to the second plane.

[0008] In some embodiments, the rotating arm assembly also includes: a first auxiliary arm, the first auxiliary arm is connected to the second end of the first rotating arm or is an integral structure with the second end of the first rotating arm, and the first auxiliary arm is rotatably connected to the second end of the first conversion arm; and a second auxiliary arm, the second auxiliary arm is connected to the second end of the second rotating arm or is an integral structure with the second end of the second rotating arm, and the second auxiliary arm is rotatably connected to the second end of the second conversion arm.

[0009] In some embodiments, the folding hinge further includes: a hinge shaft assembly, the hinge shaft assembly including a first hinge shaft and a second hinge shaft, the first hinge shaft being arranged on the fixed base, the center axis of the first hinge shaft coinciding with the first center axis, and the first end of the first conversion arm rotating around the first hinge shaft; the second hinge shaft being arranged on the fixed base, the center axis of the second hinge shaft coinciding with the second center axis, and the first end of the second conversion arm rotating around the second hinge shaft.

[0010] In some embodiments, the first plane is located outside the fixed base.

[0011] In some embodiments, the first end of the first rotating arm is provided with a first arc-shaped slide groove or a first slider, and the fixed base is provided with a first protrusion or a first arc-shaped track that matches the first arc-shaped slide groove or the first slider, and the center of the first arc-shaped slide groove or the center of the first arc-shaped track is located on the first rotating axis; the first end of the second rotating arm is provided with a second arc-shaped slide groove or a second slider, and the fixed base is provided with a second protrusion or a second arc-shaped track that matches the second arc-shaped slide groove or the second slider, and the center of the second arc-shaped slide groove or the center of the second arc-shaped track is located on the second rotating axis.

[0012] In some embodiments, the fixed base and / or the rotating arm assembly is provided with a first limiting assembly and a second limiting assembly, wherein the first limiting assembly is used to limit the rotation angle of the first rotating arm relative to the fixed base; and the second limiting assembly is used to limit the rotation angle of the second rotating arm relative to the fixed base.

[0013] In some embodiments, the first end of the first rotating arm has a first rotating trajectory in the fixed base, and the first limiting assembly is located on the first rotating trajectory; the first end of the second rotating arm has a second rotating trajectory in the fixed base, and the second limiting assembly is located on the second rotating trajectory.

[0014] In some embodiments, the first limiting assembly is located at an end of the first rotation track; and the second limiting assembly is located at an end of the second rotation track.

[0015] In some embodiments, it also includes: a synchronization module, which is rotatably disposed on the fixed base and is located between the first end of the first conversion arm and the first end of the second conversion arm, and the synchronization module is transmission-connected to the first end of the first conversion arm and the first end of the second conversion arm respectively; and a torque module, which is pressed onto the first conversion arm and the second conversion arm to provide torque for the rotation of the first conversion arm and the second conversion arm.

[0016] In some embodiments, the torque module includes: a concave cam connecting rod, provided with a first concave-convex portion and a second concave-convex portion connected to the first concave-convex portion, the first concave-convex portion is sleeved on the first hinge shaft, and the second concave-convex portion is sleeved on the second hinge shaft; a first concave cam, sleeved on the first hinge shaft and transmission connected to the first hinge shaft, the concave-convex end of the first concave cam is arranged opposite to the first concave-convex portion; a second concave cam, sleeved on the second hinge shaft and transmission connected to the second hinge shaft, and the concave-convex end of the second concave cam is arranged opposite to the second concave-convex portion; a first elastic member, sleeved on the first hinge shaft, the first elastic member creates pressure between the concave-convex end of the first concave cam and the first concave-convex portion; and a second elastic member, sleeved on the second hinge shaft, the second elastic member creates pressure between the concave-convex end of the second concave cam and the second concave-convex portion.

[0017] In some embodiments, the unfolding angle range of the folding hinge is 0° to 180°; when the folding hinge is unfolded from 0° to 15°, the first concave-convex portion has a first inclined surface in contact with the concave-convex end of the first concave cam, and the concave-convex end of the first concave cam rotates uphill relative to the first inclined surface, and the second concave-convex portion has a second inclined surface in contact with the concave-convex end of the second concave cam, and the concave-convex end of the second concave cam moves uphill relative to the second inclined surface; when the folding hinge is unfolded from 60° to 140°, the first concave-convex portion has a third inclined surface in contact with the concave-convex end of the first concave cam, and the concave-convex end of the first concave cam moves uphill relative to the third inclined surface, and the second concave-convex portion has a fourth inclined surface in contact with the concave-convex end of the second concave cam. surface, the concave-convex end of the second concave cam moves uphill relative to the fourth inclined surface; when the folding hinge is unfolded from 160° to 180°, the first concave-convex portion has a fifth inclined surface in contact with the concave-convex end of the first concave cam, the concave-convex end of the first concave cam moves downhill relative to the fifth inclined surface, the second concave-convex portion has a sixth inclined surface in contact with the concave-convex end of the second concave cam, and the concave-convex end of the second concave cam moves downhill relative to the sixth inclined surface; wherein the slope angles of the first inclined surface and the second inclined surface are respectively the first slope angle, the slope angles of the third inclined surface and the fourth inclined surface are respectively the second slope angle, the slope angles of the fifth inclined surface and the sixth inclined surface are respectively the third slope angle, and the first slope angle is greater than the second slope angle, and the third slope angle is greater than the second slope angle.

[0018] In some embodiments, the second end of the first conversion arm is provided with a first sliding groove, the second end of the second conversion arm is provided with a second sliding groove, the first auxiliary arm is provided with a first sliding pin, the first sliding pin is located in the first sliding groove and can slide in the first sliding groove, the second auxiliary arm is provided with a second sliding pin, the second sliding pin is located in the second sliding groove and can slide in the second sliding groove; or, the first auxiliary arm is provided with a first sliding groove, the second auxiliary arm is provided with a second sliding groove; the second end of the first conversion arm is provided with a first sliding pin, the first sliding pin is located in the first sliding groove and can slide in the first sliding groove, the second end of the second conversion arm is provided with a second sliding pin, the second sliding pin is located in the second sliding groove and can slide in the second sliding groove.

[0019] An embodiment of the present disclosure provides an integrated folding hinge, which includes two of the above-mentioned folding hinges, the two folding hinges are arranged opposite to each other, the fixed bases of the two folding hinges are an integrated structure, the first rotating arms of the two folding hinges are an integrated structure, and the second rotating arms of the two folding hinges are an integrated structure.

[0020] A hinge assembly provided by an embodiment of the present disclosure includes: a pressure plate assembly, including a first supporting pressure plate and a second supporting pressure plate; and at least one of the above-mentioned folding hinges, wherein the second end of the first rotating arm of the folding hinge is connected to the first supporting pressure plate, and the second end of the second rotating arm of the folding hinge is connected to the second supporting pressure plate.

[0021] In some embodiments, the hinge assembly also includes at least one integrated folding hinge as described above, wherein the second end of the first rotating arm of the integrated folding hinge is connected to the first support pressure plate, and the second end of the second rotating arm of the integrated folding hinge is connected to the second support pressure plate.

[0022] In some embodiments, a driven folding hinge is further included, which includes: a driven base; a first driven arm, the first end of the first driven arm is rotatably disposed on the driven base, a first driven rotation axis is provided between the first driven arm and the driven base, and the second end of the first driven arm is connected to the first support pressure plate; and a second driven arm, the first end of the second driven arm is rotatably disposed on the driven base, a second driven rotation axis is provided between the second driven arm and the driven base, and the second end of the second driven arm is connected to the first support pressure plate; wherein the first driven rotation axis coincides with the first rotation axis, and the second driven rotation axis coincides with the second rotation axis.

[0023] In some embodiments, the force applied to the pressure plate assembly at the location where the integrated folding hinge is provided is greater than the force applied to the pressure plate assembly at the location where the driven folding hinge is provided.

[0024] In some embodiments, the integrated folding hinge is distributed at the middle of the first supporting platen and the second supporting platen; and the driven folding hinge is distributed at the ends of the first supporting platen and the second supporting platen.

[0025] A foldable electronic device provided by an embodiment of the present disclosure includes: the above-mentioned hinge assembly; a function board assembly, including a first function board and a second function board, the first function board is connected to the first rotating arm; the second function board is connected to the second rotating arm, the first function board and the second function board are distributed on opposite sides of the hinge assembly; and a flexible display module, covering the first function board, the second function board and the hinge assembly.

[0026] In some embodiments, it also includes: a force-bearing shell assembly, including a first force-bearing shell and a second force-bearing shell, the first force-bearing shell is buckled on the side of the first functional board away from the flexible display module; the second force-bearing shell is buckled on the side of the second functional board away from the flexible display module.

[0027] In some embodiments, the system further includes: a connecting harness, wherein two ends of the connecting harness are respectively connected to the first functional board and the second functional board, and the two ends of the connecting harness are stretchable.

[0028] In some embodiments, it also includes: a decorative cover plate, which is located on the side of the folding hinge away from the flexible display module; a wire groove for the connection harness to pass through is provided between the decorative cover plate and the first support pressure plate and the second support pressure plate.

[0029] In some embodiments, the area of ​​the connecting wire harness corresponding to the wire duct and the decorative cover plate are made by in-mold injection molding.

[0030] The embodiments of the present disclosure have at least the following beneficial effects:

[0031] In the folding hinge proposed in the embodiment of the present disclosure, a rotating arm assembly is rotatably connected to the fixed base, the first end of the first rotating arm rotates around the first rotating axis, and the first end of the second rotating arm rotates around the second rotating axis; at the same time, the conversion arm assembly is rotatably connected to the fixed base, the first end of the first conversion arm rotates around the first central axis, and the first end of the second conversion arm rotates around the second central axis; by misaligning the first plane where the first rotating axis and the second rotating axis are located with the second plane where the first central axis and the second central axis are located, and making the first distance between the first rotating axis and the second rotating axis greater than the second distance between the first central axis and the second central axis, the misalignment of the first plane and the increase of the first distance can increase the folding inner cavity space to a certain extent, thereby increasing the bending radius of the flexible display module, so as to prevent the flexible display module from being stretched or squeezed during the folding and unfolding process, thereby preventing the flexible display module from being damaged by creases during the folding and unfolding process, thereby achieving the purpose of protecting the flexible display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] FIG1 shows a schematic perspective structural diagram of a folding hinge according to some embodiments of the present disclosure;

[0034] FIG2 shows an exploded view of the folding hinge in FIG1 ;

[0035] FIG3 shows a state change diagram of the flexible display module during the folding and unfolding process;

[0036] FIG4 shows a schematic structural diagram of a bending area of ​​a flexible display module;

[0037] FIG5 is a schematic diagram showing the stress deformation of the bending area of ​​the flexible display module in FIG4 ;

[0038] FIG6 shows a front view of the folding hinge in FIG1 ;

[0039] FIG7 shows a cross-sectional view taken along line AA of the folding hinge in FIG6 ;

[0040] FIG8 is a partial schematic diagram showing the connection structure between the rotating arm assembly and the fixed base of the folding hinge in FIG6 ;

[0041] FIG9 is a schematic diagram showing the relative positions of the rotating arm assembly and the fixed base when the folding hinge in FIG6 is in the folded state;

[0042] FIG10 is a schematic diagram showing the connection structure between the rotating arm assembly and the fixed base of the folding hinge according to some embodiments of the present disclosure;

[0043] FIG11 shows a schematic structural diagram of a synchronization module of a folding hinge according to some embodiments of the present disclosure;

[0044] FIG12 shows a schematic structural diagram of a synchronization module of a folding hinge according to some embodiments of the present disclosure;

[0045] FIG13 is a schematic structural diagram of the torque module of the folding hinge in FIG6 ;

[0046] FIG14 shows a schematic perspective structural diagram of an integrated folding hinge according to some embodiments of the present disclosure;

[0047] FIG15 shows a front view of the integrated folding hinge in FIG14;

[0048] FIG16 shows an exploded view of the integrated folding hinge in FIG14 ;

[0049] FIG17 shows a front view of a hinge assembly according to some embodiments of the present disclosure;

[0050] FIG18 shows an exploded view of the hinge assembly in FIG17 ;

[0051] FIG19 shows a schematic perspective structural diagram of the driven folding hinge of the hinge assembly in FIG17 ;

[0052] FIG20 shows an exploded view of the driven folding hinge in FIG19 ;

[0053] FIG21 is a schematic diagram showing the three-dimensional structure of the driven folding hinge in FIG19 from another perspective;

[0054] FIG22 shows a schematic diagram of the connection structure of the driven base and the first and second driven arms of the driven folding hinge in FIG21 ;

[0055] FIG23 shows a schematic perspective structural diagram of a driven base of the driven folding hinge in FIG21 ;

[0056] FIG24 shows a schematic diagram of a three-dimensional structure of a foldable electronic device according to some embodiments of the present disclosure;

[0057] FIG25 is a perspective structural diagram showing the hinge assembly of the foldable electronic device in FIG24;

[0058] FIG26 shows an exploded view of the foldable electronic device in FIG24 ;

[0059] FIG27 is a schematic structural diagram showing a functional board assembly and a force-bearing housing assembly in the foldable electronic device in FIG24 ;

[0060] FIG28 shows an enlarged partial cross-sectional view of the connection harness of the foldable electronic device in FIG27 ;

[0061] FIG29 is a schematic diagram showing the connection structure of the control panel, the function board assembly, and the force-bearing housing assembly of the foldable electronic device in FIG24 ;

[0062] FIG30 is a schematic diagram showing the three-dimensional structure of the foldable electronic device in FIG25 from another perspective;

[0063] FIG31 shows an enlarged view of the section at point B in FIG20 ;

[0064] FIG32 is a schematic diagram showing the three-dimensional structure of the bracket assembly of the foldable electronic device in FIG26;

[0065] FIG. 33 shows an exploded view of the bracket assembly of FIG. 32 .

[0066] Reference numerals: 1000, folding hinge; 100, fixed base; 113, first curved track; 114, first position-limiting assembly; 123, second curved track; 124, second position-limiting assembly; 130, hinge fixing seat; 131, fixing screw; 200, rotating arm assembly; 210, first rotating arm; 211, first end of the first rotating arm; 212, first rotating axis; 213, first slider; 214, second end of the first rotating arm; 215, first sliding pin; 220, second rotating arm; 221, first end of the second rotating arm; 222, second rotating axis; 223, second slider; 224, second end of the second rotating arm; 2 25. Second sliding pin; 230. First auxiliary arm; 240. Second auxiliary arm; 300. Hinge shaft assembly; 310. First hinge shaft; 311. First center axis; 320. Second hinge shaft; 321. Second center axis; 400. Conversion arm assembly; 410. First conversion arm; 411. First end of the first conversion arm; 412. Second end of the first conversion arm; 413. First sliding slot; 420. Second conversion arm; 421. First end of the second conversion arm; 422. Second end of the second conversion arm; 423. Second sliding slot; L1. First distance; L2. Second distance; 600. Synchronous module; 610. Synchronous gear Wheel; 620, gear rotation pin; 700, torque module; 710, concave cam connecting rod; 711, first concave-convex portion; 712, second concave-convex portion; 721, first concave cam; 722, second concave cam; 731, first elastic member; 732, second elastic member; 2000, integrated folding hinge; 3000, pressure plate assembly; 3100, first supporting pressure plate; 3200, second supporting pressure plate; 4000, driven folding hinge; 4100, driven base; 4110, first driven limit assembly; 4120, second driven limit assembly; 4210, first driven arm; 4220, second driven arm; 5000, function board assembly Parts; 5100, first functional board; 5200, second functional board; 6000, flexible display module; 6100, tensile stress layer; 6200, neutral layer; 6300, extrusion stress layer; 7000, force-bearing shell assembly; 7100, first force-bearing shell; 7110, force-bearing frame; 7120, mouth-shaped decorative cover; 7200, second force-bearing shell; 8100, connecting wire harness; 8200, decorative cover; 8300, wire trough; 8400, control panel; 8410, screws; 8500, bracket assembly; 8510, magnetic shell; 8520, magnet block; 8530, folding leg; 8540, friction shaft. DETAILED DESCRIPTION

[0067] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0068] In addition, the present disclosure may repeat reference numbers and / or reference letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0069] The present disclosure is described below with reference to specific embodiments and in conjunction with the accompanying drawings:

[0070] The embodiment of the present disclosure proposes a folding hinge 1000, as shown in Figures 1 to 13, the folding hinge 1000 includes a fixed base 100, a rotating arm assembly 200, and a conversion arm assembly 400. The rotating arm assembly 200 includes a first rotating arm 210 and a second rotating arm 220; the first end 211 of the first rotating arm is rotatably disposed on the fixed base 100, and the first rotating arm 210 has a first rotating axis 212; the first end 221 of the second rotating arm is rotatably disposed on the fixed base 100, and the second rotating arm 220 has a second rotating axis 222; the conversion arm assembly 400 includes a first conversion arm 410 and a second conversion arm 420, the first end 411 of the first conversion arm is rotatably disposed on the fixed base 100, and the first conversion arm 410 has a first center axis 222. Center axis 311; the first end 421 of the second conversion arm is rotatably disposed on the fixed base 100, and the second conversion arm 420 has a second center axis 321; wherein, the first rotation axis 212 and the second rotation axis 222 are located in the first plane, the first center axis 311 and the second center axis 321 are located in the second plane, and the second plane is misaligned with the first plane; there is a first distance L1 between the first rotation axis 212 and the second rotation axis 222, and there is a second distance L2 between the first center axis 311 and the second center axis 321, and the first distance L1 is greater than the second distance L2.

[0071] In the folding hinge 1000 proposed in the embodiment of the present disclosure, the rotating arm assembly 200 is rotatably connected to the fixed base 100, the first rotating arm 210 rotates around the first rotating axis 212, and the second rotating arm 220 rotates around the second rotating axis 222; at the same time, the conversion arm assembly 400 is rotatably connected to the fixed base 100, the first conversion arm 410 rotates around the first central axis 311, and the second conversion arm 420 rotates around the second central axis 321; by making the first plane where the first rotating axis 212 and the second rotating axis 222 are located misaligned with the second plane where the first central axis 311 and the second central axis 312 are located, and The first distance L1 between the first rotation axis 212 and the second rotation axis 222 is made greater than the second distance L2 between the first center axis 311 and the second center axis 312. By misaligning the first plane and increasing the first distance L1, the folding inner cavity space can be increased to a certain extent, thereby increasing the bending radius of the flexible display module 6000 to prevent the flexible display module 600 from being stretched or squeezed during the folding and unfolding process, thereby preventing the flexible display module 600 from having defects such as creases and damage during the folding and unfolding process to a certain extent, thereby achieving the purpose of protecting the flexible display module 6000.

[0072] The flexible display module 6000 faces two major challenges during the folding process. First, the flexible display module 6000 cannot be folded directly into a folded state by folding it in half. Folding the flexible display module 6000 directly in half will cause permanent damage. Therefore, the flexible display module 6000 cannot be folded in half directly during the folding process. Second, due to the different bending radii of the flexible display module 6000 and the folding hinge 1000, the flexible display module 6000 and the folding hinge 1000 will be misaligned, similar to the misalignment between pages of paper during the folding and unfolding process of a book, that is, the two ends of the flexible display module 6000 cannot be aligned with the two ends of the folding electronic device housing, causing the flexible display module 6000 to be easily stretched and / or squeezed during the folding and unfolding process, resulting in creases.

[0073] In response to the problem of creases generated in the flexible display module 6000 during the folding process, the embodiments of the present disclosure propose the following inventive concepts: first, the bending space of the flexible display module 6000 is increased, and the folding hinge 1000 leaves a sufficiently large bending space in the folding electronic device, so that the flexible display module 6000 can be bent within the larger bending space, thereby avoiding, to a certain extent, the flexible display module 6000 being directly folded in half during the folding process and causing permanent folding damage and creases; second, the bending radius of the flexible display module 6000 is increased, and the misalignment between the flexible display module 6000 and the folding hinge 1000 is reduced, thereby avoiding, to a certain extent, large stretching and / or squeezing of the flexible display module 6000 due to the misalignment, thereby avoiding the generation of creases in the flexible display module 6000.

[0074] In some embodiments of the present disclosure, the first plane where the first rotation axis 212 and the second rotation axis 222 are located can be misaligned with the second plane where the first central axis 311 and the second central axis 321 are located, and the first distance L1 between the first rotation axis 212 and the second rotation axis 222 can be greater than the second distance L2 between the first central axis 311 and the second central axis 321, so that a larger bending space can be formed by the first rotation axis 212, the second rotation axis 222, the first central axis 311 and the second central axis 321, so that the flexible display module 6000 can be bent in an arc instead of being directly folded, thereby avoiding permanent folding damage and creases on the flexible display module 6000 during the folding process to a certain extent.

[0075] In some embodiments of the present disclosure, the misalignment between the first plane and the second plane means that the first plane and the second plane do not overlap. The first plane and the second plane may be parallel or intersect at the extension plane of the first plane and the second plane.

[0076] In some embodiments of the present disclosure, as shown in Figures 3 to 5, during the folding process of the flexible display module 6000, the outer layer of the flexible display module 6000 is subjected to tensile stress, forming a tensile stress layer 6100, while the inner layer is subjected to compressive stress, forming an extrusion stress layer 6300. Consequently, a neutral layer 6200 exists on the cross-section of the flexible display module 6000 that is neither subjected to tensile stress nor to compressive stress. The stress experienced by the neutral layer 6200 during the folding process of the flexible display module 6000 can be considered zero. Because the neutral layer 6200 is neither stretched nor compressed during the folding process, the length of the neutral layer 6200 remains unchanged. This neutral layer 6200 thus serves as a reference for calculating the unfolded length of the flexible display module 6000 and can be used to predict and control the deformation and stress distribution of the flexible display module 6000 during the folding process. Typically, the neutral layer 6200 is positioned close to the center of the thickness of the flexible display module 6000. The exact position of the neutral layer 6200 is related to factors such as the material's ductility, degree of deformation, mechanical properties such as tensile strength and compressive strength, the material's thickness, bending radius, and bending angle.

[0077] In some embodiments of the present disclosure, the middle layer of the flexible display module 6000 can be considered as the neutral layer 6200. This is used as an example to illustrate the deformation and stress distribution of the flexible display module 6000 during the folding process. During the folding process of the flexible display module 6000, the position of the neutral layer 6200 is the main factor causing defects such as creases in the flexible display module 6000. The flexible display module 6000 is covered on the folding hinge 1000, and the flexible display module 6000 is also connected to the first rotating arm 210 and the second rotating arm 220 of the rotating arm assembly 200. During the folding and unfolding process of the flexible display module 6000, the flexible display module 6000 and the first rotating arm 210 rotate around the first rotating axis 212 at the same time to achieve folding and unfolding. The flexible display module 6000 also rotates around the second rotating axis 222 at the same time with the second rotating arm 220 to achieve folding and unfolding, and the bending radius of the flexible display module 6000 is positively correlated with the rotation radius of the rotating arm assembly 200, that is, the larger the rotation radius of the rotating arm assembly 200, the larger the bending radius of the neutral layer 6200 in the flexible display module 6000.

[0078] During the folding and unfolding of the flexible display module 6000, as shown in Figure 3, the neutral layer 6200 primarily deforms in the first, second, and third regions. The deformation of the neutral layer 6200 in the first and second regions is primarily related to the bending radius of the flexible display module 6000. When the bending radius is small, the deformation of the neutral layer 6200 in the first and second regions is greater; when the bending radius is large, the deformation of the neutral layer 6200 in the first and second regions is smaller. The deformation of the neutral layer 6200 in the third region is primarily related to the position of the first rotation axis 212 in the first region and the second rotation axis 222 in the second region. When the distance between the first rotation axis 212 in the first region and the second rotation axis 222 in the second region is small, the deformation of the neutral layer 6200 in the third region is greater; when the distance between the first rotation axis 212 in the first region and the second rotation axis 222 in the second region is large, the deformation of the neutral layer 6200 in the third region is smaller. Therefore, to minimize deformation of the neutral layer 6200, the bending radius of the neutral layer 6200 during the folding process of the flexible display module 6000 needs to be larger, and the distance between the first rotation axis 212 of the first region and the second rotation axis 222 of the second region of the neutral layer 6200 needs to be larger. As shown in Figures 6 to 10, since the first and second rotation arms 210, 220 of the rotating arm assembly 200 are respectively rotatably connected to the fixed base 100, the positions of the first and second rotation axes 212, 222 relative to the fixed base 100 can, to a certain extent, reflect the size of the rotation radius of the rotating arm assembly 200.By making the first plane where the first rotation axis 212 and the second rotation axis 222 are located misaligned with the second plane where the first central axis 311 and the second central axis 321 are located, the positions of the first rotation axis 212 and the second rotation axis 222 can be freed from the limitation of the structural size of the fixed base 100, and even the first rotation axis 212 and the second rotation axis 222 can be located in an area outside the fixed base 100, so that the rotation radius of the rotating arm assembly 200 is no longer limited by the structural size of the fixed base 100, so that the rotation radius of the rotating arm assembly 200 can be designed to have a larger value, and at the same time, the flexible display module 6000 can have a larger bending radius during the folding process; by making the first rotation axis 212 and the second rotation axis 222 misaligned with the second plane where the first central axis 311 and the second central axis 321 are located, the positions of the first rotation axis 212 and the second rotation axis 222 can be freed from the limitation of the structural size of the fixed base 100, and even the first rotation axis 212 and the second rotation axis 222 can be located in an area outside the fixed base 100, so that the rotation radius of the rotating arm assembly 200 is no longer limited by the structural size of the fixed base 100, and the rotation radius of the rotating arm assembly 200 can be designed to have a larger value. At the same time, the flexible display module 6000 can have a larger bending radius during the folding process. The first distance L1 between the moving axes 222 is greater than the second distance L2 between the first center axis 311 and the second center axis 321, so that the distance between the first rotation axis 212 and the second rotation axis 222 is no longer limited by the structural size of the fixed base 100, so that the distance between the first rotation axis 212 and the second rotation axis 222 can have a larger value according to the design, that is, the neutral layer 6200 can have a larger distance between the first rotation axis 212 in the first area and the second rotation axis 222 in the second area, thereby reducing the deformation degree of the neutral layer 6200 of the flexible display module 6000 during the folding process to a certain extent, thereby reducing or avoiding the crease defects generated by the flexible display module 6000 during the folding process.

[0079] As an optional embodiment, the first plane may be located outside the fixed base 100. Alternatively, as shown in Figures 6 and 9, when the flexible display module 6000 is overlaid on the folding hinge 1000, the flexible display module 6000 is located above the folding hinge 1000, and the first rotation axis 212 and the second rotation axis 222 located on the first plane are respectively located above the flexible display module 6000. During the folding process of the flexible display module 6000, the first rotation arm 210 rotates relative to the fixed base 100 about the first rotation axis 212, and the second rotation arm 220 rotates relative to the fixed base 100 about the second rotation axis 222. Simultaneously, the first rotation arm 210 and the second rotation arm 220 move toward each other, thereby folding the flexible display module 6000. During the folding and unfolding of the flexible display module 6000, the positions of the first rotation axis 212 and the second rotation axis 222 need to ensure that the deformation lengths at any point on the flexible display module 6000 are the same. Therefore, the distance between any point on the neutral layer 6200 of the flexible display module 6000 and the central axis of the flexible display module 6000 needs to remain constant to minimize the stress deformation of each layer of the flexible display module 6000. This requires a larger bending radius. Given a fixed overall thickness for the fixed base 100, the first rotation axis 212 and the second rotation axis 222 can be positioned above the flexible display module 6000, as far away from the fixed base 100 as possible, to increase the bending radius. Furthermore, because the first rotation axis 212 and the second rotation axis 222 are positioned above the flexible display module 6000, there is no rotational interference between the first and second rotation arms 210 and 220. Optionally, when the distance between the first plane and the fixed base 100 / the second plane is greater, that is, the distance between the first rotation axis 212 and the second rotation axis 222 and the fixed base 100 / the second plane is greater, the distance between the first rotation axis 212 and the second rotation axis 222 and the flexible display module 6000 is greater, the bending radius of the flexible display module 6000 can be made larger, and the deformation of the flexible display module 6000 can be smaller, so that the creases produced by the flexible display module 6000 are not obvious, and the display effect of the flexible display module 6000 can be improved.

[0080] For example, as shown in FIG9 , when the thickness of the flexible display module 6000 is 0.88 mm and the bending radius is 5 mm, calculation shows that the first rotation axis 212 and the second rotation axis 222 need to be located at the positions shown in the figure, that is, above the flexible display module 6000 .

[0081] It should be noted that the first rotation axis 212 and the second rotation axis 222 are non-physical parts. The first rotation axis 212 is the rotation center axis of the first rotating arm 210 relative to the fixed base 100, and the second rotation axis 222 is the rotation center axis of the second rotating arm 220 relative to the fixed base 100.

[0082] In some embodiments of the present disclosure, as shown in Figures 1 to 10, the main function of the fixed base 100 is to connect the components such as the rotating arm assembly 200 and the conversion arm assembly 400 together, and it serves as a carrier for the components of the folding hinge 1000. Optionally, the fixed base 100 can be provided with a base fixing hole for fixing the fixed base 100 to a location such as the housing of the folding electronic device to achieve a fixed installation of the fixed base 100.

[0083] In some embodiments of the present disclosure, as shown in Figures 1 to 10, the rotating arm assembly 200 can be connected and fixed to the flexible display module 6000, so that the flexible display module 6000 and the rotating arm assembly 200 rotate around the first rotating axis 212 and the second rotating axis 222 respectively to achieve folding and unfolding.

[0084] In some embodiments of the present disclosure, the flexible display module 6000 may be a flexible organic light-emitting diode (OLED) display module.

[0085] In some embodiments of the present disclosure, as shown in Figures 1 to 10, the folding and unfolding angles of the folding hinge 1000 are between 0° and 180°. That is, the flexible display module 6000 can be folded to 0°, unfolded to 180°, or folded to any angle between 0° and 180° through the folding hinge 1000. When the flexible display module 6000 is folded or unfolded using the folding hinge 1000, the occurrence of crease defects in the flexible display module 6000 can be reduced or avoided to a certain extent, thereby improving the user experience and extending the service life of the flexible display module 6000.

[0086] In some embodiments of the present disclosure, the folding hinge 1000 can be applied to foldable electronic devices with larger flexible display modules 6000. For example, the folding hinge 1000 provided by the present disclosure can be used to fold and unfold a 17.3-inch flexible display module 6000, allowing the 17.3-inch flexible display module 6000 to be folded down to 12.6 inches.

[0087] The folding hinge 1000 of the embodiment of the present disclosure can, to a certain extent, solve the display defects such as creases, screen cracks, and dents generated during the folding and unfolding of the flexible display module 6000, and can enable larger-sized electronic devices such as displays and laptops to achieve folding application scenarios. By folding the flexible display module 6000 of the display and laptop, the weight and volume of folding electronic devices such as the display and laptop can be reduced, making the folding electronic devices lighter and simpler, easier to carry, and improving the user experience and comfort of the terminal.

[0088] As an optional embodiment, as shown in FIG6 and FIG9 , the first rotation axis 212 , the second rotation axis 222 , the first central axis 311 and the second central axis 321 are parallel to each other, and the first plane is parallel to the second plane.

[0089] In some embodiments of the present disclosure, as shown in Figures 6 and 9, by making the first rotation axis 212, the second rotation axis 222, the first central axis 311, and the second central axis 321 parallel to each other, and the first plane and the second plane parallel to each other, the folding hinge 1000 can be symmetrically folded and unfolded on opposite sides. It should be noted that the parallelism proposed in the embodiments of the present disclosure allows for a certain degree of assembly error between the various components and does not represent absolute mathematical parallelism.

[0090] As an optional embodiment, as shown in Figures 1 to 6, the rotating arm assembly 200 further includes a first auxiliary arm 230 and a second auxiliary arm 240. The first auxiliary arm 230 is connected to the second end 214 of the first rotating arm or is integrally formed with the second end 214 of the first rotating arm. The first auxiliary arm 230 is rotatably and slidably connected to the second end 412 of the first conversion arm. The second auxiliary arm 240 is connected to the second end 224 of the second rotating arm or is integrally formed with the second end 224 of the second rotating arm. The second auxiliary arm 240 is rotatably and slidably connected to the second end 422 of the second conversion arm.

[0091] In some embodiments of the present disclosure, the first auxiliary arm 230 and the second end 214 of the first rotating arm can be split structures, and the first auxiliary arm 230 and the second end 214 of the first rotating arm are connected together during assembly, so that the first auxiliary arm 230 and the first rotating arm 210 can rotate synchronously around the first rotating axis 212.

[0092] Optionally, the first auxiliary arm 230 and the second end 214 of the first rotating arm can be directly connected together; optionally, the first auxiliary arm 230 and the second end 214 of the first rotating arm can also be indirectly connected together through a component structure in the hinge assembly. For example, the first auxiliary arm 230 and the second end 214 of the first rotating arm are respectively connected to the first support plate 3100, thereby realizing an indirect connection between the first auxiliary arm 230 and the second end 214 of the first rotating arm.

[0093] Similarly, the second auxiliary arm 240 and the second end 224 of the second rotating arm can be split structures. During assembly, the second auxiliary arm 240 and the second end 224 of the second rotating arm are connected together, so that the second auxiliary arm 240 and the second rotating arm 220 can rotate synchronously around the second rotating axis 222.

[0094] Optionally, the second auxiliary arm 240 and the second end 224 of the second rotating arm can be directly connected together; optionally, the second auxiliary arm 240 and the second end 224 of the second rotating arm can also be indirectly connected together through a component structure in the hinge assembly, for example, the second auxiliary arm 240 and the second end 224 of the second rotating arm are respectively connected to the second support plate 3200, thereby realizing an indirect connection between the second auxiliary arm 240 and the second end 224 of the second rotating arm.

[0095] In some embodiments of the present disclosure, the first auxiliary arm 230 and the second end 214 of the first rotating arm can be integrally formed, and the first auxiliary arm 230 and the first rotating arm 210 can rotate synchronously about the first rotating axis 212. Similarly, the second auxiliary arm 240 and the second end 214 of the second rotating arm can be integrally formed, and the second auxiliary arm 240 and the second rotating arm 210 can rotate synchronously about the second rotating axis 222.

[0096] In some embodiments of the present disclosure, linkage between the rotating arm assembly 200 and the transition arm assembly 400 is achieved by rotatably and slidingly connecting the first auxiliary arm 230 to the second end 412 of the first transition arm, and by rotatably and slidingly connecting the second auxiliary arm 240 to the second end 422 of the second transition arm. Because the first rotation axis 212 and the first central axis 311 do not coincide with each other, a certain displacement difference occurs between the second end 214 of the first rotating arm, the first auxiliary arm 230, and the second end 412 of the first transition arm during rotation. The rotatably and slidingly connecting the first auxiliary arm 230 and the second end 412 of the second transition arm accommodates this displacement difference, maintaining the connection between the second end 214 of the first rotating arm and the second end 412 of the first transition arm. The manner and function of the rotatably and slidingly connecting the second auxiliary arm 240 to the second end 422 of the second transition arm are similar and are not further described here.

[0097] As an alternative embodiment, as shown in Figures 1 to 10 , the folding hinge further includes a hinge axis assembly 300, which includes a first hinge axis 310 and a second hinge axis 320. The first hinge axis 310 is mounted on the fixed base 100, with the central axis of the first hinge axis 310 coinciding with the first central axis 311. The first end 411 of the first transition arm rotates about the first hinge axis 310. The second hinge axis 320 is mounted on the fixed base 100, with the central axis of the second hinge axis 320 coinciding with the second central axis 321. The first end 221 of the second transition arm rotates about the second hinge axis 320.

[0098] In some embodiments of the present disclosure, as shown in FIG. 1 to FIG. 10 , optionally, a hinge fixing seat 130 may be provided on the fixing base 100 , so that the hinge assembly 300 may be disposed on the fixing base 100 through the hinge fixing seat 130 .

[0099] In some embodiments of the present disclosure, as shown in Figures 1 to 10, the transition arm assembly 400 can be rotatably connected to the fixed base 100 via the hinge axis assembly 300. Specifically, the first transition arm 410 can rotate relative to the fixed base 100 via the first hinge axis 310, and the second transition arm 420 can rotate relative to the fixed base 100 via the second hinge axis 320. Furthermore, because the first plane is misaligned with the second plane, the first rotation axis 212 and the second rotation axis 222 are misaligned with the first hinge axis 310 and the second hinge axis 320. When the flexible display module 6000 is folded to a certain position, the rotation angle of the transition arm assembly 400 differs from the rotation angle of the rotating arm assembly 200. Therefore, the rotating arm assembly 200 and the transition arm assembly 400 are designed to be slidably connected to each other to accommodate the displacement difference caused by the different rotation angles of the transition arm assembly 400 and the rotating arm assembly 200.

[0100] In some embodiments of the present disclosure, as shown in Figures 1 to 6, optionally, the first hinge axis 310 and the second hinge axis 320 are fixedly arranged on the fixed base 100, and the first end 411 of the first conversion arm can be mounted on the first hinge axis 310 and can rotate relative to the first hinge axis 310, so that the first conversion arm 410 can rotate around the first central axis 311 relative to the fixed base 100; similarly, the first end 421 of the second conversion arm can be mounted on the second hinge axis 320 and can rotate relative to the second hinge axis 320, so that the second conversion arm 420 can rotate around the first central axis 311 relative to the fixed base 100.

[0101] In other embodiments of the present disclosure, optionally, the first hinge shaft 310 and the second hinge shaft 320 can be rotatably provided on the fixed base 100, and the first end 411 of the first conversion arm can be sleeved on the first hinge shaft 310 and transmission connected to the first hinge shaft 310. When the first hinge shaft 310 rotates relative to the fixed base 100 around the first central axis 311 of the first hinge shaft 310, the first conversion arm 410 can synchronously rotate relative to the fixed base 100 around the first central axis 311; similarly, the first end 421 of the second conversion arm can be sleeved on the second hinge shaft 320 and transmission connected to the second hinge shaft 320. When the second hinge shaft 320 rotates relative to the fixed base 100 around the second central axis 321 of the second hinge shaft 320, the second conversion arm 420 can synchronously rotate relative to the fixed base 100 around the second central axis 321.

[0102] As an optional implementation, as shown in FIG. 6 to FIG. 10 , the first plane is located outside the fixed base 100 .

[0103] In some embodiments of the present disclosure, by positioning the first plane outside the fixed base 100 and the folding direction of the folding hinge being the direction in which the two ends of the flexible display panel fold together, the first plane can be positioned on the side of the fixed base facing the folding direction. Thus, the first rotation axis 212 and the second rotation axis 222 can be positioned outside the fixed base 100 and on the side of the fixed base 100 facing the folding direction, thereby making the space between the first rotation axis 212, the second rotation axis 222, the first center axis 311 and the second center axis 321 larger, that is, the folding inner cavity space can be increased to a certain extent, thereby increasing the bending radius of the flexible display module 6000, so as to avoid the flexible display module 6000 from being stretched or squeezed during the folding and unfolding process, thereby avoiding defects such as creases and damage to the flexible display module 600 during the folding and unfolding process, thereby achieving the purpose of protecting the flexible display module 6000.

[0104] As an optional embodiment, as shown in Figures 6 to 10, the first end 211 of the first rotating arm is provided with a first arcuate groove or a first slider 213, and the fixed base 100 is provided with a first protrusion or a first arcuate track 113 matching the first arcuate groove or the first slider 213, and the center of the first arcuate groove or the center of the first arcuate track 113 is located on the first rotation axis 212; the first end 221 of the second rotating arm is provided with a second arcuate groove or a second slider 223, and the fixed base 100 is provided with a second protrusion or a second arcuate track 123 matching the second arcuate groove or the second slider 223, and the center of the second arcuate groove or the center of the second arcuate track 123 is located on the second rotation axis 222.

[0105] In some embodiments of the present disclosure, as shown in Figures 6 to 10, the first end 211 of the first rotating arm can be provided with a first arcuate groove. Correspondingly, the fixed base 100 is provided with a first protrusion that matches the first arcuate groove, so that the center of the first arcuate groove is located on the first rotation axis 212. This can achieve the purpose of rotating the first end 211 of the first rotating arm about the first rotation axis 212. Moreover, the structural design of the first arcuate groove can make the first rotation axis 212 virtually formed above the fixed base 100. The rotational connection method between the first end 221 of the second rotating arm and the fixed base 100 is the same and will not be repeated here.

[0106] In some embodiments of the present disclosure, as shown in Figures 6 to 10, the first end 211 of the first rotating arm can be provided with a first slider 213. Accordingly, the fixed base 100 is provided with a first curved track 113 that matches the first slider 213. The center of the first curved track 113 is located on the first rotation axis 212, thereby enabling the first end 211 of the first rotating arm to rotate about the first rotation axis 212. Furthermore, the structural design of the first curved track 113 allows the first rotation axis 212 to be virtually formed above the fixed base 100. The rotational connection between the first end 221 of the second rotating arm and the fixed base 100 is similar and will not be further described here.

[0107] In some embodiments of the present disclosure, it can be seen from the above analysis that after the outer diameter of the first arc-shaped slide groove or the first arc-shaped track 113 and the outer diameter of the first arc-shaped slide groove or the first arc-shaped track 113 are determined, that is, after the bending radius of the flexible display module 6000 is determined, the first rotation axis 212 and the second rotation axis 222 can be made as far away from the fixed base 100 as possible to reduce the crease of the flexible display module 6000 and improve the user experience.

[0108] In some embodiments of the present disclosure, while locating the first and second rotational axes 212, 222 as far away from the fixed base 100 as possible, the physical dimensions of the first end 211 of the first rotating arm and the first end 221 of the second rotating arm need to be smaller. This reduces the overlap between the first and second rotating arm ends 211, 221 and the fixed base 100 when the folding hinge 1000 is folded to a closed position. In the embodiment shown in FIG9 , when the folding hinge 1000 is folded to a closed position, the overlap between the first end 211 of the first rotating arm and the fixed base 100 is only 1 / 12 of a circle. Simultaneously, the overlap between the first end 221 of the second rotating arm and the fixed base 100 is only 1 / 12 of a circle. Specifically, the first curved chute or first curved track 113 is only 1 / 12 of a circle, and the second curved chute or second curved track 123 is only 1 / 12 of a circle. For example, with a bending radius of 5 mm, the overlap is typically 0.7 mm.

[0109] If the overlap between the first end 211 of the first rotating arm and the first end 221 of the second rotating arm and the fixed base 100 is too small, it is easy for the first end 211 of the first rotating arm and the first end 221 of the second rotating arm to fall off from the fixed base 100 during the process of folding the folding hinge 1000 from the unfolded state to the closed state, thereby causing the folding hinge 1000 to lose its rotation function and affect the opening and closing of the entire folding electronic device; or during the process of the folding hinge 1000 from the folded closed state to the unfolded state, due to the size gap between the first end 211 of the first rotating arm and the first end 221 of the second rotating arm and the fixed base 100, the first end 211 of the first rotating arm and the first end 221 of the second rotating arm cannot rotate smoothly on the fixed base 100, and the first end 211 of the first rotating arm and the first end 221 of the first rotating arm form a lever structure and get stuck or break, thereby causing the folding hinge 1000 to lose its rotation function and affect the opening and closing of the entire folding electronic device.

[0110] To prevent the first end 211 of the first rotating arm and the first end 221 of the second rotating arm from falling off, getting stuck, or breaking between the fixed base 100, the length of the fixed base 100 in the first direction can be made greater than three times the bending radius to increase the overlap between the first end 211 of the first rotating arm and the first end 221 of the second rotating arm and the fixed base 100. Alternatively, the length of the fixed base 100 in the first direction can be increased as much as possible within an acceptable range for the flexible display module 6000 and the foldable electronic device, thereby increasing the overlap between the first end 211 of the first rotating arm and the first end 221 of the second rotating arm and the fixed base 100, thereby reducing or preventing the possibility of falling off or breaking between the first end 211 of the first rotating arm and the first end 221 of the second rotating arm and the fixed base 100. Furthermore, the gap between the first curved track 113 and the second curved track 123 on the fixed base 100 can be reduced, as can the gap between the first curved slot and the second curved slot when the folding hinge 1000 is folded to a closed position. Optionally, the gap between the first curved track 113 and the second curved track 123 on the fixed base 100 can be reduced, or the gap between the first curved chute and the second curved chute can be reduced when the folding hinge 1000 is folded to the closed state, so as to improve the overlap between the first end 211 of the first rotating arm and the first end 221 of the second rotating arm and the fixed base 100, thereby to a certain extent reducing or preventing the first end 211 of the first rotating arm and the first end 221 of the second rotating arm from falling off or breaking from the fixed base 100. Optionally, the gap between the first curved track 113 and the second curved track 123 can be less than or equal to 0.01 mm.

[0111] As an optional embodiment, the fixed base 100 and / or the rotating arm assembly 200 is provided with a first limiting assembly 114 and a second limiting assembly 124, the first limiting assembly 114 is used to limit the rotation angle of the first rotating arm 210 relative to the fixed base 100; the second limiting assembly 124 is used to limit the rotation angle of the second rotating arm 220 relative to the fixed base 100.

[0112] In some embodiments of the present disclosure, as shown in Figures 7 and 10, a first limiting assembly 114 and a second limiting assembly 124 can be set on the fixed base 100 and / or the rotating arm assembly 200. The first limiting assembly 114 limits the rotation angle of the first rotating arm 210 relative to the fixed base 100, and the second limiting assembly 124 limits the rotation angle of the second rotating arm 220 relative to the fixed base 100, thereby preventing the first rotating arm 210 and the second rotating arm 220 from detaching from the fixed base 100, thereby avoiding the defect of poor movement during folding and unfolding to a certain extent.

[0113] In some embodiments of the present disclosure, if space between the rotating arm assembly 200 and the fixed base 100 permits, a first limit assembly 114 and a second limit assembly 124 may be provided on the rotating arm assembly 200, or a first limit assembly 114 and a second limit assembly 124 may be provided on the fixed base 100, or a first limit assembly 114 and a second limit assembly 124 that can cooperate with each other may be provided on the rotating arm assembly 200 and the fixed base 100, respectively, and the first limit assembly 114 and the second limit assembly 124 may be used to limit the rotation angle of the first rotating arm 210 relative to the fixed base 100 and the rotation angle of the second rotating arm 220 relative to the fixed base 100, respectively. For example, when the folding hinge 1000 is folded to the closed state, the first limiting component 114 can prevent the first rotating arm 210 from continuing to rotate along the original rotation direction, and the second limiting component 124 can prevent the second rotating arm 220 from continuing to rotate along the original rotation direction, thereby preventing the first rotating arm 210 and the second rotating arm 220 from falling off from the fixed base 100; for another example, when the folding hinge 1000 is unfolded to the unfolded state, the first limiting component 114 can prevent the first rotating arm 210 from continuing to rotate along the original rotation direction, and the second limiting component 124 can prevent the second rotating arm 220 from continuing to rotate along the original rotation direction. The second rotating arm 220 is prevented from continuing to rotate along the original rotation direction, so as to prevent the first end 211 of the first rotating arm and the first end 221 of the second rotating arm from protruding relative to the fixed base 100 and abutting against the curved part of the flexible display module 6000, and to prevent the first end 211 of the first rotating arm and the first end 221 of the second rotating arm from being stuck and broken relative to the fixed base 100. It can also prevent the flexible display module 6000 from being reversely folded due to the first rotating arm 210 continuing to rotate along the original rotation direction and the second rotating arm 220 continuing to rotate along the original rotation direction.

[0114] As an optional embodiment, as shown in Figures 7 and 10, the first end 211 of the first rotating arm has a first rotation trajectory in the fixed base 100, and the first limiting component 114 is located on the first rotation trajectory; the first end 221 of the second rotating arm has a second rotation trajectory in the fixed base 100, and the second limiting component 124 is located on the second rotation trajectory.

[0115] In some embodiments of the present disclosure, as shown in Figures 7 and 10, the first end 211 of the first rotating arm is rotatably disposed in the fixed base 100 through the first arcuate groove or the first arcuate track 113, so the first arcuate groove or the first arcuate track can be regarded as the first rotating track, and by locating the first limiting component 114 in the first arcuate groove or the first arcuate track 113, the first limiting component 114 can be located on the first rotating track; optionally, the first limiting component 114 can be located on the side wall or end of the first arcuate groove or the first arcuate track 113. Similarly, the first end 221 of the second rotating arm is rotatably arranged in the fixed base 100 through the second arc groove or the second arc track 123, so the second arc groove or the second arc track 123 can be regarded as the second rotation track, and the second limiting component 124 can be located in the second arc groove or the second arc track 123, so that the second limiting component 124 can be located on the second rotation track; optionally, the second limiting component 124 can be located on the side wall or end of the second arc groove or the second arc track 123.

[0116] In some embodiments of the present disclosure, as shown in Figure 7, the first limit assembly 114 and the second limit assembly 124 can respectively include limit pins, and the limit pins are set on the fixed base 100 to limit the rotation angle of the first rotating arm 210 relative to the fixed base 100 and the rotation angle of the second rotating arm 220 relative to the fixed base 100.

[0117] As an optional embodiment, as shown in FIG. 7 and FIG. 10 , the first limiting assembly 114 is located at the end of the first rotation track; the second limiting assembly 124 is located at the end of the second rotation track.

[0118] In some embodiments of the present disclosure, as shown in Figure 7, the first limit assembly 114 and the second limit assembly 124 can be limit pins. By setting the limit pins in the fixed base 100 and making the limit pins located at the end of the first rotation trajectory and the end of the second rotation trajectory respectively, when the folding hinge 1000 is unfolded to 180° horizontally, the first end 211 of the first rotating arm can abut on the limit pin serving as the first limit assembly 114, and the first end 221 of the second rotating arm can abut on the limit pin serving as the second limit assembly 124, so that the first rotating arm 210, the second rotating arm 220 and the fixed base 100 maintain a horizontal unfolding state.

[0119] In some embodiments of the present disclosure, as shown in FIG10 , the first limiting assembly 114 may include a limiting block and a limiting boss that cooperate with each other. Similarly, the second limiting assembly 124 may include a limiting block and a limiting boss that cooperate with each other. The limiting block may be provided at the first end 211 of the first rotating arm and the first end 221 of the second rotating arm, and the limiting boss may be provided at the sidewall or end of the arc-shaped groove or arc-shaped track on the fixed base 100. When the first end 211 of the first rotating arm and the first end 221 of the second rotating arm rotate to the expanded state, the limiting block abuts against the limiting boss to limit the first end 211 of the first rotating arm and the first end 221 of the second rotating arm from continuing to rotate relative to the fixed base 100.

[0120] As an optional embodiment, as shown in Figures 1 to 13, the folding hinge 1000 also includes a synchronization module 600, which is rotatably disposed on the fixed base 100 and is located between the first end 411 of the first conversion arm and the first end 421 of the second conversion arm. The synchronization module 600 is respectively connected to the first end 411 of the first conversion arm and the first end 421 of the second conversion arm.

[0121] In some embodiments of the present disclosure, as shown in FIG1 and FIG2 , by disposing the synchronization module 600 between the first end 411 of the first conversion arm and the first end 421 of the second conversion arm, and by having the synchronization module 600 in transmission connection with the first end 411 of the first conversion arm and the first end 421 of the second conversion arm, respectively, the first end 411 of the first conversion arm and the first end of the second conversion arm 420 can be synchronously rotated toward each other to achieve the folding process of the folding hinge 1000, and the first end 411 of the first conversion arm and the first end 421 of the second conversion arm can be synchronously rotated away from each other to achieve the unfolding process of the folding hinge 1000. In other words, during the folding and unfolding process of the folding hinge 1000, the two opposite sides of the folding hinge 1000 in the first direction can be linked to each other to achieve synchronous opening and closing.

[0122] In foldable electronic devices of related technologies, such as traditional laptop computers, non-flexible displays are generally used. The non-flexible display screen and the main body adopt a one-way opening and closing design, which makes the opening and closing experience poor.

[0123] In some embodiments of the present disclosure, when the folding hinge 1000 is used in a folding electronic device such as a laptop computer having a flexible display module 6000, the flexible display module 6000 can simultaneously cover two folding areas of the folding electronic device, thereby increasing the display area of ​​the folding electronic device; when the flexible display module 6000 is folded to a closed state, sufficient space needs to be reserved for the flexible display module 6000, so the folding hinge 1000 cannot adopt the traditional single-axis opening and closing, and needs to adopt the folding hinge 1000 with a dual-axis embodiment of the present disclosure.

[0124] In some embodiments of the present disclosure, if the biaxial folding hinge 1000 is not opened and closed in a coordinated manner, the two folded sides of the flexible display module 6000 will be misaligned when the flexible display module 6000 is in the closed state, resulting in an unsightly appearance of the flexible display module 6000 and the possibility of creases. By providing a synchronization module 600 in the folding hinge 1000, a bidirectional coordinated opening and closing design of the flexible display module 6000 is achieved. External forces are simultaneously applied to the folded sides of the flexible display module 6000 to fold and unfold. The synchronized opening and closing of the folded sides of the flexible display module 6000 achieves flexible bending of the flexible display module 6000. On the one hand, the volume and weight of the folding electronic device equipped with the flexible display module 6000 and the folding hinge 1000 can be reduced, thereby improving the convenience of portability and use for users. On the other hand, external forces can be applied with one or both hands to perform the folding and unfolding operations, thereby improving the user experience of the folding and opening process of the folding electronic device.

[0125] In some embodiments of the present disclosure, as shown in Figures 1 to 13, a gear rotating pin 620 can be set on the hinge fixing seat 130, and the gear rotating pin 620 can be located between the first hinge shaft 310 and the second hinge shaft 320. The synchronous gear 610 is rotatably set on the hinge fixing seat 130 through the gear rotating pin 620 to achieve the purpose of being rotatably set on the fixed base 100 through the gear.

[0126] As an optional embodiment, as shown in Figures 1 to 13, the synchronization module 600 includes an even number of synchronization gears 610, which are meshed and connected in sequence, and the opposite sides of the even number of synchronization gears 610 are respectively meshed and connected with the first end 411 of the first conversion arm and the first end 421 of the second conversion arm.

[0127] In some embodiments of the present disclosure, as shown in Figures 1 and 2, the synchronization module 600 includes two synchronization gears 610, which are meshed and connected with each other. At the same time, the two opposite sides of the two synchronization gears 610 are respectively meshed and connected with the first end 411 of the first conversion arm and the first end 421 of the second conversion arm. The first end 411 of the first conversion arm and the first end 421 of the second conversion arm can rotate toward and away from each other synchronously through the two synchronization gears 610, so that the folding hinge 1000 can be folded and unfolded in a linked manner on the opposite sides in the first direction.

[0128] In some embodiments of the present disclosure, as shown in Figures 11 and 12, the synchronization module 600 includes four synchronization gears 610, which are meshed and connected in sequence. At the same time, the opposite sides of the four synchronization gears 610 are respectively meshed and connected with the first end 411 of the first conversion arm and the first end 421 of the second conversion arm. The first end 411 of the first conversion arm and the first end 421 of the second conversion arm can rotate toward and away from each other synchronously through the four synchronization gears 610, so that the folding hinge 1000 can be folded and unfolded in a linked manner on the opposite sides in the first direction.

[0129] As an optional embodiment, as shown in FIG. 11 and FIG. 12 , an even number of synchronous gears 610 are meshed and connected in sequence along a straight line, or an even number of synchronous gears 610 are meshed and connected in sequence along an arc line.

[0130] In some embodiments of the present disclosure, as shown in FIG11 , an even number of synchronous gears 610 can be arranged along a straight line. In other embodiments of the present disclosure, as shown in FIG12 , an even number of synchronous gears 610 can be arranged along an arc. The number, arrangement, and size of the synchronous gears 610 in the synchronous module 600 can be adaptively selected based on the size of the space in which the synchronous module 600 is installed.

[0131] As an optional embodiment, as shown in Figures 1 to 13, the folding hinge 1000 also includes a torque module 700, which is pressed onto the first conversion arm 410 and the second conversion arm 420 to provide torque for the rotation of the first conversion arm 410 and the second conversion arm 420.

[0132] In some embodiments of the present disclosure, as shown in Figures 1 through 13 , torque is the resistance that a foldable electronic device must overcome during folding and unfolding. The torque provided to the first and second transition arms 410 and 420 by the torque module 700 allows the foldable electronic device to hover at any unfolded angle. Furthermore, it provides motion resistance during the folding and unfolding process, which, in terms of user experience, is the feel of the user opening and closing the foldable electronic device.

[0133] As an alternative embodiment, as shown in Figures 1 to 13, the torque module 700 includes a concave-convex link 710, a first concave cam 721, a second concave cam 722, a first elastic member 731, and a second elastic member 732. The concave-convex link 710 includes a first concave-convex portion 711 and a second concave-convex portion 712 connected to the first concave-convex portion 711. The first concave-convex portion 711 is sleeved on the first hinge shaft 310, and the second concave-convex portion 712 is sleeved on the second hinge shaft 320. The first concave-convex portion 721 is sleeved on the first hinge shaft 310 and is in transmission connection with the first hinge shaft 310. The concave-convex end of the first concave-convex portion 721 is disposed opposite the first concave-convex portion 711. The second concave-convex portion 722 is sleeved on the second hinge shaft 320 and is in transmission connection with the second hinge shaft 320. The concave-convex end of the second concave-convex portion 722 is disposed opposite the second concave-convex portion 712. The first elastic member 731 is sleeved on the first hinge shaft 310, and the first elastic member 731 creates elastic pressure between the concave and convex ends of the first concave cam 721 and the first concave and convex portion 711; the second elastic member 732 is sleeved on the second hinge shaft 320, and the second elastic member 732 creates elastic pressure between the concave and convex ends of the second concave cam 722 and the second concave and convex portion 712.

[0134] In some embodiments of the present disclosure, as shown in Figures 2, 6 and 13, the concave-convex portion 710 is provided with a first concave-convex portion 711 and a second concave-convex portion 712 connected to the first concave-convex portion 711, the first concave-convex portion 711 is sleeved on the first hinge shaft 310 and is rotatably connected to the first hinge shaft 310, and the second concave-convex portion 712 is sleeved on the second hinge shaft 320 and is rotatably connected to the second hinge shaft 320, that is, the first concave-convex portion 711 allows the first hinge shaft 310 to rotate relative to the first concave-convex portion 711, and the second concave-convex portion 712 allows the second hinge shaft 320 to rotate relative to the first concave-convex portion 711.

[0135] As shown in Figures 2, 6, and 13, the first concave cam 721 is sleeved on and transmission-connected to the first hinge shaft 310, with the concave and convex ends of the first concave cam 721 facing the first concave-convex portion 711. Because the first hinge shaft 310 is transmission-connected to the first conversion arm 410, the first concave cam 721 and the first conversion arm 410 can rotate synchronously. Similarly, because the second hinge shaft 320 is transmission-connected to the second conversion arm 420, the second concave cam 722 and the second conversion arm 420 can rotate synchronously.

[0136] As shown in Figures 2, 6 and 13, since the first elastic member 731 is sleeved on the first hinge shaft 310, the first elastic member 731 creates elastic pressure between the concave and convex ends of the first concave cam 721 and the first concave-convex portion 711; the second elastic member 732 is sleeved on the second hinge shaft 320, and the second elastic member 732 creates elastic pressure between the concave and convex ends of the second concave cam 722 and the second concave-convex portion 712, that is, the first elastic member 731 presses the first concave cam 721 onto the first concave-convex portion 711, and the second elastic member 732 presses the second concave cam 722 onto the second concave-convex portion 712.

[0137] Therefore, the first concave-convex portion 711 of the concave-convex cam link 710 can provide a certain amount of rotational resistance for the first concave cam 721, that is, the concave-convex cam link 710 and the first concave cam 721 cooperate to provide a certain amount of rotational resistance for the first conversion arm 410. Similarly, the second concave-convex portion 712 of the concave-convex cam link 710 can provide a certain amount of rotational resistance for the second concave cam 722, that is, the concave-convex cam link 710 and the second concave cam 722 cooperate to provide a certain amount of rotational resistance for the second conversion arm 420. This provides a certain amount of resistance to the toward and away rotation of the first conversion arm 410 and the second conversion arm 420, and also provides a certain amount of resistance to the toward and away rotation of the first rotation arm 210 and the second rotation arm 220. In other words, this provides a certain amount of motion resistance during the folding and unfolding of the flexible display module 6000, allowing the folding hinge 1000 to hover at any unfolding angle without the action of external force, thereby allowing the flexible display module 6000 or a foldable electronic device equipped with the flexible display module 6000 to hover at any unfolding angle.

[0138] In some embodiments of the present disclosure, the first elastic member 731 and the second elastic member 732 may be springs or disc springs, respectively, and the first elastic member 731 and the second elastic member 732 are in a compressed state.

[0139] In some embodiments of the present disclosure, as shown in Figures 2, 6 and 13, the torque provided by the torque module 700 is related to the slope angle of the contact surface between the concave and convex end of the first concave cam 721 and the first concave and convex portion 711, the contact surface between the concave and convex end of the second concave cam 722 and the second concave and convex portion 712, and the preload force of the first elastic member 731 and the second elastic member 732. Therefore, the torque can be adjusted by adjusting the size and performance of these components.

[0140] As an optional embodiment, as shown in FIG2 , FIG6 and FIG13 , the unfolding angle range of the folding hinge 1000 is 0° to 180°;

[0141] When the folding hinge 1000 is unfolded from 0° to 15°, the first concave-convex portion 711 has a first inclined surface that contacts the concave-convex end of the first concave cam 721, and the concave-convex end of the first concave cam 721 moves uphill relative to the first inclined surface. The second concave-convex portion 712 has a second inclined surface that contacts the concave-convex end of the second concave cam 722, and the concave-convex end of the second concave cam 722 moves uphill relative to the second inclined surface.

[0142] When the folding hinge 1000 is unfolded from 60° to 140°, the first concave-convex portion 711 has a third inclined surface that contacts the concave-convex end of the first concave cam 721. The concave-convex end of the first concave cam 721 moves uphill relative to the third inclined surface. The second concave-convex portion 712 has a fourth inclined surface that contacts the concave-convex end of the second concave cam 722. The concave-convex end of the second concave cam 722 moves uphill relative to the fourth inclined surface.

[0143] When the folding hinge 1000 is unfolded from 160° to 180°, the first concave-convex portion 711 has a fifth inclined surface that contacts the concave-convex end of the first concave cam 721. The concave-convex end of the first concave cam 721 moves downhill relative to the fifth inclined surface. The second concave-convex portion 712 has a sixth inclined surface that contacts the concave-convex end of the second concave cam 722. The concave-convex end of the second concave cam 722 moves downhill relative to the sixth inclined surface.

[0144] Among them, the slope angles of the first and second slopes are respectively the first slope angle, the slope angles of the third and fourth slopes are respectively the second slope angle, the slope angles of the fifth and sixth slopes are respectively the third slope angle, and the first slope angle is greater than the second slope angle, and the third slope angle is greater than the second slope angle.

[0145] In some embodiments of the present disclosure, as shown in FIG13 , the unfolding angle of the folding hinge 1000 ranges from 0° to 180°. In other words, the folding hinge 1000 can be unfolded to a maximum of 180°, or folded to 0°.

[0146] In some embodiments of the present disclosure, as shown in Figure 13, the torque and rotational resistance of the folding hinge 1000 at different unfolding angles can be adjusted by adjusting the slope angle of the contact surface between the concave and convex end of the first concave cam 721 and the first concave-convex portion 711, and the slope angle of the contact surface between the concave and convex end of the second concave cam 722 and the second concave-convex portion 712, thereby optimizing the feel of the user opening and closing the folding electronic device provided with the folding hinge 1000 at different unfolding angles.

[0147] In some embodiments of the present disclosure, when the folding hinge 1000 is unfolded from 0° to 15°, the first concave-convex portion 711 can have a first inclined surface that contacts the concave-convex end of the first concave cam 721, and the second concave-convex portion 712 can have a second inclined surface that contacts the concave-convex end of the second concave cam 722. The first inclined surface is located on the first concave-convex portion 711, and the second inclined surface is located on the second concave-convex portion 712. The first and second inclined surfaces have the same slope angle, namely, the first slope angle. Furthermore, the first slope angle is greater than the second slope angle; that is, the first slope angle is relatively large, and the first and second slopes are relatively steep. During the unfolding process from 0° to 15°, the movement of the concave-convex end of the first concave cam 721 relative to the first inclined surface of the first concave-convex portion 711 is an upward process at a relatively large slope angle, resulting in relatively large resistance, and therefore requiring a relatively large external force to unfold. Conversely, during the folding process from 0° to 15°, the movement of the concave-convex end of the first concave cam 721 relative to the first inclined surface of the first concave-convex portion 711 is a downward process at a relatively large slope angle, resulting in relatively small resistance, and thus enabling folding with a relatively small external force, or even achieving automatic folding without the application of external force. Similarly, the movement of the concave-convex end of the second concave cam 722 relative to the second inclined surface of the second concave-convex portion 712 is similar and will not be further described here.

[0148] In some embodiments of the present disclosure, when the folding hinge 1000 is unfolded from 60° to 140°, the first concave-convex portion 711 can have a third inclined surface that contacts the concave-convex end of the first concave cam 721, and the second concave-convex portion 712 can have a fourth inclined surface that contacts the concave-convex end of the second concave cam 722. The third inclined surface is located on the first concave-convex portion 711, and the second inclined surface is located on the second concave-convex portion 712. The third and fourth inclined surfaces have the same slope angle, namely the second slope angle. Furthermore, the first slope angle is greater than the second slope angle; that is, the second slope angle is relatively small, while the third and fourth slopes are relatively flat. During the unfolding process from 60° to 140°, the movement of the concave-convex end of the first concave cam 721 relative to the third inclined surface of the first concave-convex portion 711 is an upward movement at a relatively small slope angle, resulting in relatively little resistance. Therefore, the hinge can hover within this unfolding angle range, and the unfolding angle can be adjusted by applying a small force. Conversely, during the folding process from 60° to 140°, the movement of the concave-convex end of the first concave cam 721 relative to the third inclined surface of the first concave-convex portion 711 is a downward movement at a relatively small slope angle, resulting in relatively little resistance. Therefore, the hinge can hover within this unfolding angle range, and the unfolding angle can be adjusted by applying a small force. Furthermore, the resistance during unfolding is slightly greater than that during folding. For example, when the folding hinge 1000 unfolds from 60° to 140°, the second slope angle can be set to 5° to 12°. Similarly, the movement of the concave-convex end of the second concave cam 722 relative to the fourth inclined surface of the second concave-convex portion 712 is similar and will not be further described here. In some embodiments of the present disclosure, when the folding hinge 1000 is unfolded from 160° to 180°, the first concave-convex portion 711 can have a fifth inclined surface that contacts the concave-convex end of the first concave cam 721, and the second concave-convex portion 712 can have a sixth inclined surface that contacts the concave-convex end of the second concave cam 722. The fifth inclined surface is located on the first concave-convex portion 711, and the sixth inclined surface is located on the second concave-convex portion 712. The fifth and sixth inclined surfaces have the same slope angle, namely the third slope angle. Furthermore, the third slope angle is greater than the second slope angle; that is, the third slope angle is relatively large, and the fifth and sixth inclined surfaces are relatively steep. During the unfolding process from 160° to 180°, the movement of the concave-convex end of the first concave cam 721 relative to the fifth inclined surface of the first concave-convex portion 711 is a downward process with a relatively large slope angle, resulting in relatively low resistance. This allows the unfolding operation to be achieved with a small external force, or even for automatic unfolding without the application of external force. Conversely, during the folding process from 160° to 180°, the movement of the concave-convex end of the first concave cam 721 relative to the fifth inclined surface of the first concave-convex portion 711 is an upward process with a relatively large slope, resulting in relatively high resistance, and therefore requiring a large external force for folding. Similarly, the movement of the concave-convex end of the second concave cam 722 relative to the sixth inclined surface of the second concave-convex portion 712 is similar and will not be further described here.

[0149] In some embodiments of the present disclosure, during the folding and unfolding process of the folding hinge 1000 at 15° to 60° and 140° to 160°, the surface where the first concave-convex portion 711 contacts the concave-convex end of the first concave cam 721, and the surface where the second concave-convex portion 712 contacts the concave-convex end of the second concave cam 722 can be relatively flat planes, respectively, so that the folding hinge 1000 can hover at any angle within the angle range of 15° to 60° and 140° to 160°.

[0150] As an optional embodiment, the second end 412 of the first conversion arm is connected to the first auxiliary arm 230 via a sliding pair; the second end 422 of the second conversion arm is connected to the second auxiliary arm 240 via a sliding pair.

[0151] In some embodiments of the present disclosure, as shown in Figures 1 to 6 , the first plane in which the first rotation axis 212 and the second rotation axis 222 lie is misaligned with the second plane in which the first hinge axis 310 and the second hinge axis 320 lie. That is, the first rotation axis 212 is relatively separated from the first central axis 311 of the first hinge axis 310, and the rotation of the first conversion arm 410 is relatively eccentric with the rotation of the first rotation arm 210. The second rotation axis 222 is relatively separated from the second central axis 321 of the second hinge axis 320, and the rotation of the second conversion arm 420 is relatively eccentric with the rotation of the second rotation arm 220. During the folding and unfolding process of the folding hinge 1000, the first conversion arm 410 rotates in conjunction with the first rotation arm 210, but the rotation angles of the first conversion arm 410 and the first rotation arm 210 differ. Similarly, the second conversion arm 420 rotates in conjunction with the second rotation arm 220, but the rotation angles of the second conversion arm 420 and the second rotation arm 220 differ. When the folding sides of the folding hinge 1000 are fully unfolded to the unfolded state, the relative angle between the first conversion arm 410 and the first rotating arm 210 is set to 0°, and the relative angle between the second conversion arm 420 and the second rotating arm 220 is set to 0°; when the folding sides of the folding hinge 1000 are folded to the closed state, the first conversion arm 410 and the second conversion arm 420 are respectively rotated 90° until the first conversion arm 410 and the second conversion arm 420 are parallel to each other, and the first rotating arm 210 and the second rotating arm 220 need to be rotated more than 90° respectively to achieve the same folding effect as the conversion arm module.

[0152] In some embodiments of the present disclosure, as shown in Figures 1 to 6, the movement between the first conversion arm 410 and the first rotating arm 210 can be achieved by a crank slider connection, with the first end 411 of the first conversion arm and the first end 211 of the first rotating arm both being rotationally connected to the fixed base 100, and the second end 412 of the first conversion arm being slidingly connected to the second end 214 of the first rotating arm or the first auxiliary arm 230. Similarly, the movement between the second conversion arm 420 and the second rotating arm 220 can be achieved by a crank slider connection, with the first end 421 of the second conversion arm and the first end 221 of the second rotating arm both being rotationally connected to the fixed base 100, and the second end 422 of the second conversion arm being slidingly connected to the second end 224 of the second rotating arm or the second auxiliary arm 240. Using this connection method, the first rotation axis 212 and the second rotation axis 222 can move relative to the conversion arm assembly 400 during the folding and unfolding process of the folding hinge 1000. Among them, the second end 412 of the first conversion arm is connected to the first auxiliary arm 230 through a sliding pair, and the second end 422 of the second conversion arm is connected to the second auxiliary arm 230 through a sliding pair. The relative displacement generated by the sliding pair connection between the second end 412 of the first conversion arm and the first auxiliary arm 230 compensates for the displacement difference caused by the first side of the flexible display module 6000 rotating around different axes during folding and unfolding; similarly, the relative displacement generated by the sliding pair connection between the second end 422 of the second conversion arm and the second auxiliary arm 240 compensates for the displacement difference caused by the second side of the flexible display module 6000 rotating around different axes during folding and unfolding.

[0153] As an optional embodiment, the second end 412 of the first conversion arm is provided with a first sliding groove 413, the second end 422 of the second conversion arm is provided with a second sliding groove 423, the first auxiliary arm 230 is provided with a first sliding pin 215, the first sliding pin 215 is located in the first sliding groove 413 and can slide in the first sliding groove 413, the second auxiliary arm 240 is provided with a second sliding pin 225, the second sliding pin 225 is located in the second sliding groove 423 and can slide in the second sliding groove 423; or, the first auxiliary arm 230 is provided with a first sliding rail groove, the second auxiliary arm 240 is provided with a second sliding rail groove, the second end 412 of the first conversion arm is provided with a first sliding rail pin, the first sliding rail pin is located in the first sliding rail groove and can slide in the first sliding rail groove, the second end 422 of the second conversion arm is provided with a second sliding rail pin, the second sliding rail pin is located in the second sliding rail groove and can slide in the second sliding rail groove.

[0154] In some embodiments of the present disclosure, as shown in Figures 1 to 6, in order to achieve a sliding pair connection between the second end 412 of the first conversion arm and the first auxiliary arm 230, a first sliding groove 413 can be provided at the second end 412 of the first conversion arm, and accordingly, a first sliding pin 215 is provided on the first auxiliary arm, and the sliding pair connection effect is achieved by the sliding of the first sliding pin 215 in the first sliding groove 413; similarly, in order to achieve a sliding pair connection between the second end 422 of the second conversion arm and the second auxiliary arm 240, a second sliding groove 423 can be provided at the second end 422 of the second conversion arm, and accordingly, a second sliding pin 225 is provided on the second auxiliary arm, and the sliding pair connection effect is achieved by the sliding of the second sliding pin 225 in the second sliding groove 423.

[0155] In some other embodiments of the present disclosure, in order to achieve a sliding pair connection between the second end 412 of the first conversion arm and the first auxiliary arm 230, a first slide rail pin can be provided at the second end 412 of the first conversion arm, and accordingly, a first slide rail groove is provided on the first auxiliary arm 230, and the sliding pair connection effect is achieved by the sliding of the first slide rail pin in the first slide rail groove; similarly, in order to achieve a sliding pair connection between the second end 422 of the second conversion arm and the second auxiliary arm 240, a second slide rail pin can be provided at the second end 422 of the second conversion arm, and accordingly, a second slide rail groove is provided on the second auxiliary arm 240, and the sliding pair connection effect is achieved by the sliding of the second slide rail pin in the second slide rail groove.

[0156] In some embodiments of the present disclosure, the torque module 700 and / or the synchronization module 600 are connected to the rotating arm assembly 200 through the conversion arm assembly 400. Furthermore, the sliding pair connection between the conversion arm assembly 400 and the rotating arm assembly 200 can compensate for the displacement difference caused by the conversion arm assembly 400 and the rotating arm assembly 200 rotating about different axes. During the folding and unfolding process of the folding hinge 1000, the rotating arm assembly 200 is rotated about the first rotation axis 212 and the second rotation axis 222 by external forces. The rotational force is transmitted to the synchronization module 600 through the conversion assembly, achieving synchronous linkage between the two folding sides. The rotational force is also transmitted to the torque module 700 through the conversion assembly, achieving hovering of the two folding sides.

[0157] Based on the same inventive concept, as shown in Figures 14 to 16, the embodiment of the present disclosure also proposes an integrated folding hinge 2000, which includes two of the above-mentioned folding hinges 1000, the two folding hinges 1000 are arranged opposite to each other, the fixed bases 100 of the two folding hinges 1000 are an integrated structure, the first rotating arms 210 of the two folding hinges 1000 are an integrated structure, and the second rotating arms 220 of the two folding hinges 1000 are an integrated structure.

[0158] Since the integrated folding hinge 2000 provided in the embodiment of the present disclosure includes the folding hinge 1000 of the above technical solution, the integrated folding hinge 2000 provided by the present invention has all the beneficial effects of the above folding hinge 1000, which will not be elaborated here.

[0159] In some embodiments of the present disclosure, as shown in Figures 1 to 13 and Figures 14 and 16, the connection method between the fixed base 100, the rotating arm assembly 200, the hinge shaft assembly 300 and the conversion arm assembly 400 in the integrated folding hinge 2000 is the same as that of the folding hinge 1000 and will not be repeated here.

[0160] In some embodiments of the present disclosure, since the integrated folding hinge 2000 includes two folding hinges 1000, the integrated folding hinge 2000 has a torque that is basically equivalent to that of the two folding hinges 1000. At the same time, the two folding hinges 1000 in the integrated folding hinge 2000 can fix basic structures such as the base 100. Therefore, the integrated folding hinge 2000 not only occupies less space, but is also more conducive to improving the torque of the integrated folding hinge 2000.

[0161] Based on the same inventive concept, as shown in Figures 17 and 18 , the disclosed embodiments further provide a hinge assembly comprising a pressure plate assembly 3000 and at least one of the aforementioned folding hinges 1000. The pressure plate assembly 3000 comprises a first supporting pressure plate 3100 and a second supporting pressure plate 3200. The second end of the first rotating arm 210 of the folding hinge 1000 is connected to the first supporting pressure plate 3100, and the second end of the second rotating arm 220 of the folding hinge 1000 is connected to the second supporting pressure plate 3200.

[0162] Since the hinge assembly provided in the embodiment of the present disclosure includes the folding hinge 1000 of the above technical solution, the integrated folding hinge 2000 provided by the present invention has all the beneficial effects of the above folding hinge 1000, which will not be elaborated here.

[0163] In some embodiments of the present disclosure, as shown in Figures 17 and 18, when the flexible display module 6000 is folded by the hinge assembly, it is necessary to provide a certain amount of support for the flexible display module 6000 to ensure that after the flexible display module 6000 is unfolded to a certain angle, there is no sense of relief when pressing the flexible display module 6000. Therefore, a pressure plate assembly 3000 can be provided in the hinge assembly. The pressure plate assembly 3000 includes a first support plate 3100 and a second support plate 3200. The first support plate 3100 is connected to the second end of the first rotating arm 210 of the folding hinge 1000, and the second support plate 3200 is connected to the second end of the second rotating arm 220 of the folding hinge 1000. As a result, the first support plate 3100 and the second support plate 3200 are provided on opposite sides of the hinge assembly, respectively, and the folding and bending area of ​​the flexible display module 6000 is supported by the first support plate 3100 and the second support plate 3200. Optionally, the second end of the first rotating arm 210 may be fixed to the first supporting plate 3100 by a fixing screw 131 , and the second end of the second rotating arm 220 may be fixed to the second supporting plate 3200 by a fixing screw 131 .

[0164] When the hinge assembly is used in a foldable electronic device, the pressure plate assembly 3000 is located below the folding and bending area of ​​the flexible display module 6000. When the flexible display module 6000 is unfolded, it supports the flexible display module 6000 and reduces the concave defects caused by bending in the folding and bending area of ​​the flexible display module. In some embodiments of the present disclosure, as shown in Figures 17 and 18, the first support pressure plate 3100 and the second support pressure plate 3200 can be made of a hard metal plate or carbon fiber plate with a certain strength. For example, the first support pressure plate 3100 and the second support pressure plate 3200 can be a high-strength stainless steel plate with a thickness of 0.5 mm.

[0165] As an optional embodiment, the hinge assembly also includes at least one integrated folding hinge 2000 as mentioned above, the second end of the first rotating arm 210 of the integrated folding hinge 2000 is connected to the first support pressure plate 3100, and the second end of the second rotating arm 220 of the integrated folding hinge 2000 is connected to the second support pressure plate 3200.

[0166] In the related art, hinges are generally arranged equidistantly in the hinge assembly and arranged symmetrically in the vertical and horizontal directions. However, in some cases, due to the limited space in the longitudinal direction of the hinge assembly, not enough folding hinges 1000 can be provided.

[0167] In some embodiments of the present disclosure, as shown in Figures 14 to 16 and Figures 17 to 18, in the hinge assembly, due to the limitation of the overall length of the hinge assembly, or due to the different force positions of the hinge assembly, different forms of folding hinges 1000 can be set at different positions of the hinge assembly to adjust the force condition of the hinge assembly and optimize the overall torque size and feel of the folding and unfolding process.

[0168] For example, when there is insufficient space in the length direction of the hinge assembly, an integrated folding hinge 2000 can be provided instead of the two folding hinges 1000 mentioned above, so that the integrated folding hinge 2000 can be used to reduce the occupied space, so that the folding hinge 1000 and the integrated folding hinge 2000 can be sufficiently distributed in the hinge assembly.

[0169] For example, based on the user's usage habits, the folding hinge 1000 and the integrated folding hinge 2000 can be arranged according to the force conditions in the length direction of the hinge assembly. Optionally, the integrated folding hinge 2000 can be aligned with the concentrated force position during the folding and unfolding operation, thereby optimizing the user's folding and unfolding feel and improving the user experience.

[0170] As an optional embodiment, as shown in Figures 19 to 23, the hinge assembly also includes a driven folding hinge 4000, which includes a driven base 4100, a first driven arm 4210 and a second driven arm 4220; the first end of the first driven arm 4210 is rotatably set on the driven base 4100, and a first driven rotation axis is provided between the first driven arm 4210 and the driven base 4100, and the second end of the first driven arm 4210 is connected to the first support pressure plate 3100; the first end of the second driven arm 4220 is rotatably set on the driven base 4100, and a second driven rotation axis is provided between the second driven arm 4220 and the driven base 4100, and the second end of the second driven arm 4220 is connected to the first support pressure plate 3100; wherein, the first driven rotation axis coincides with the first rotation axis 212, and the second driven rotation axis coincides with the second rotation axis 222.

[0171] In some embodiments of the present disclosure, as shown in Figures 19 to 23, the second end of the first follower arm 4210 can be fixed to the first support plate 3100 by screws, and the second end of the second follower arm 4220 can be fixed to the second support plate 3200 by screws.

[0172] In some embodiments of the present disclosure, as shown in Figures 19 to 23, the driven folding hinge 4000 only has a rotation structure and no linkage structure or torque structure. Therefore, the driven folding hinge 4000 can only rotate and open and close together with the folding hinge 1000 and / or the integrated folding hinge 2000 in the hinge assembly, playing a driven limiting role, thereby preventing the flexible display module 6000 from being misaligned in the folding and bending area due to the lack of limiting effect during the folding and unfolding process.

[0173] In some embodiments of the present disclosure, as shown in Figures 19 to 23, compared with the folding hinge 1000 and the integrated folding hinge 2000, the driven folding hinge 4000 has a relatively simple structure and occupies a relatively small space. Therefore, the driven folding hinge 4000 can be set in a position where the space is limited and there is not enough space to set the folding hinge 1000 or the integrated folding hinge 2000.

[0174] In some embodiments of the present disclosure, as shown in Figures 19 to 23 and Figures 1 to 13, in the driven folding hinge 4000, the connection method between the first end of the first driven arm 4210 and the driven base 4100 can be analogous to the connection method between the first end 211 of the first rotating arm of the folding hinge 1000 and the fixed base 100, and the connection method between the first end of the second driven arm 4220 and the driven base 4100 can be analogous to the connection method between the first end 221 of the second rotating arm of the folding hinge 1000 and the fixed base 100. Please refer to the above description and will not repeat it here.

[0175] For example, as shown in Figures 19 to 23, in the driven folding hinge 4000, the first end of the first driven arm 4210 and the first end of the second driven arm 4220 are respectively provided with an arcuate groove. Accordingly, a limiting slider is provided on the driven base 4100. The relative sliding movement between the limiting slider and the arcuate groove enables the first driven arm 4210 and the second driven arm 4220 to rotate relative to the driven base 4100. The arcuate groove is the motion trajectory of the first driven arm 4210 and the second driven arm 4220 as they rotate relative to the driven base 4100.

[0176] For example, as shown in Figures 19 to 23, in the driven folding hinge 4000, a first driven limiting assembly 4110 and a second driven limiting assembly 4120 having the same function as the first limiting assembly 114 and the second limiting assembly 124 in the folding hinge 1000 may also be provided. Through the first driven limiting assembly 4110 and the second driven limiting assembly 4120, the rotation range of the first driven arm 4210 and the second driven arm 4220 on the driven base 4100 can be limited.

[0177] As an optional embodiment, as shown in FIG. 17 and FIG. 18 , the force applied to the position where the pressure plate assembly 3000 is provided with the integrated folding hinge 2000 is greater than the force applied to the position where the pressure plate assembly 3000 is provided with the driven folding hinge 4000 .

[0178] That is to say, the integrated folding hinge 2000 is distributed at the position where the first supporting plate 3100 and the second supporting plate 3200 are subjected to relatively greater force; the driven folding hinge 4000 is distributed at the position where the first supporting plate 3100 and the second supporting plate 3200 are subjected to relatively less force.

[0179] Depending on user habits, different locations along the length of the hinge assembly experience different forces, with some locations experiencing greater and more concentrated forces, while others experience smaller and more dispersed forces. The integrated folding hinge 2000, where torque is relatively greater and more concentrated, can be aligned with locations on the first and second support plates 3100 and 3200 where forces are relatively greater. The driven folding hinge 4000 can be aligned with locations on the first and second support plates 3100 and 3200 where forces are relatively less. This optimizes the user's folding and unfolding feel and enhances the user experience.

[0180] As an optional embodiment, as shown in Figures 17 and 18, the integrated folding hinge 2000 is distributed in the middle of the first support platen 3100 and the second support platen 3200; the driven folding hinge 4000 is distributed at the ends of the first support platen 3100 and the second support platen 3200.

[0181] In some embodiments of the present disclosure, as shown in Figures 17 and 18 and Figures 24 to 25, when the hinge assembly is set in a folding electronic device, the force in the middle of the hinge assembly in the length direction is large and relatively concentrated, and the force at the ends of the hinge assembly in the length direction is small. Therefore, the integrated folding hinge 2000 can be set in the middle of the first support plate 3100 and the second support plate 3200; the driven folding hinge 4000 is set at the ends of the first support plate 3100 and the second support plate 3200 to match the torque distribution of the hinge assembly with the force conditions.

[0182] Based on the same inventive concept, the disclosed embodiments also provide a foldable electronic device, as shown in Figures 24 to 33 . This foldable electronic device includes the aforementioned foldable hinge 1000 assembly, a functional board assembly 5000, and a flexible display module 6000. The functional board assembly 5000 includes a first functional board 5100 and a second functional board 5200. The first functional board 5100 is connected to the first rotating arm 210; the second functional board 5200 is connected to the second rotating arm 220. The first and second functional boards 5100, 5200 are located on opposite sides of the hinge assembly. The flexible display module 6000 covers the first and second functional boards 5100, 5200, and the hinge assembly.

[0183] Since the foldable electronic device provided in the embodiment of the present disclosure includes the hinge assembly of the above technical solution, the foldable electronic device provided by the present invention has all the beneficial effects of the above hinge assembly, which will not be elaborated here.

[0184] Display devices have become an integral part of our daily work and daily lives. However, due to their inherent size and weight limitations, they are typically placed on desks or platforms, making them difficult to move. Related technologies, while portable, laptop computers only have a display module on the foldable side. Similarly, due to size and weight limitations, their display area is relatively small, failing to meet the growing demand for display space.

[0185] The foldable electronic device proposed in the disclosed embodiments utilizes a flexible display module 6000. This flexible display module 6000 can be a flexible organic light-emitting diode (OLED) display module. Because the OLEDs themselves emit light, a backlight module can be omitted, directly reducing the weight of the entire device. Furthermore, the flexible display module 6000 can bend at any angle, providing display areas on both sides of the fold. This reduces weight while doubling the display area, reducing the carrying burden for end users and enhancing the user experience.

[0186] In some embodiments of the present disclosure, as shown in Figures 24 to 33, the folded sides of the flexible display module 6000 respectively cover the front of the first function board 5100 and the second function board 5200, and the first function board 5100 and the second function board 5200 are connected by a hinge assembly. The first function board 5100 and the second function board 5200 can be folded and unfolded through the hinge assembly, thereby supporting the flexible display module 6000 to fold and unfold, so that the flexible display module 6000 can be freely folded and unfolded, and can be unfolded to an angle of up to 180 degrees or folded and closed to 0°. In some embodiments of the present disclosure, some components of the foldable electronic device can be provided in the function board assembly 5000. For example, the function main board, terminal board, Type-C board and other structures of the foldable electronic device can be fixed to the back of the first function board 5100 and / or the second function board 5200 by screws 8410 or hooks.

[0187] As an optional embodiment, as shown in Figures 24 to 33, the folding electronic device also includes a force-bearing shell assembly 7000, which includes a first force-bearing shell 7100 and a second force-bearing shell 7200. The first force-bearing shell 7100 is buckled on the side of the first functional board 5100 away from the flexible display module 6000; the second force-bearing shell 7200 is buckled on the side of the second functional board 5200 away from the flexible display module 6000.

[0188] In some embodiments of the present disclosure, as shown in Figures 24 to 33, the force-bearing housing assembly 7000 is the outer shell of the entire foldable electronic device, used to protect the internal structure of the foldable electronic device. As shown in Figures 30 and 31, the force-bearing housing assembly 7000 includes a first force-bearing housing 7100 and a second force-bearing housing 7200, which correspond to the positions of the first functional board 5100 and the second functional board 5200, respectively. At the same time, the edges of the first force-bearing shell 7100 and the edges of the second force-bearing shell 7200 are respectively provided with a force-bearing frame 7110, and a mouth-shaped decorative cover 7120 is provided on the force-bearing frame 7110. The mouth-shaped decorative cover 7120 can be assembled with the force-bearing frame 7110 by means of a hook. The mouth-shaped decorative cover 7120 and the force-bearing frame 7110 can form an edge groove structure. The edge blank area of ​​the flexible display module 6000 and the edge blank area of ​​the function board assembly 5000 are respectively located in the edge groove, so that the edge blank area of ​​the flexible display module 6000 and the edge blank area of ​​the function board assembly 5000 are hidden by the force-bearing shell assembly 7000. Optionally, the edge blank area of ​​the function board assembly 5000 can also be locked with the edge groove structure of the force-bearing shell by means of a hook; the folding edge of the function board assembly 5000 is locked and assembled with the pressure plate assembly 3000 of the folding hinge 1000 by screws 8410.

[0189] In some embodiments of the present disclosure, as shown in Figures 24 to 33, during the folding and unfolding process of a foldable electronic device, an external force is first applied to the force-bearing housing assembly 7000, which drives the function board assembly 5000 and the flexible display module 6000 to bend. At the same time, the function board assembly 5000 transmits the external force to the pressure plate assembly 3000 and the hinge assembly, allowing the folding and bending area of ​​the flexible display module 6000 to bend around different axes in the hinge assembly, and the flexible display module 6000 forms a U-shaped or teardrop-shaped bend in the folding and bending area. In the foldable electronic device, the force-bearing housing assembly 7000 and the function board assembly 5000 move synchronously around the hinge assembly with the flexible display module 6000.

[0190] As an optional embodiment, a stop point is provided on the force-bearing frame 7110 or the mouth-shaped decorative cover 7120 of the force-bearing shell at a position corresponding to the folding and bending area of ​​the flexible display module 6000, and the stop point is located on the side of the folding and bending area of ​​the flexible display module 6000 away from the hinge assembly.

[0191] In some embodiments of the present disclosure, the flexible display module 6000, driven by the hinge assembly, can achieve U-shaped or teardrop-shaped bending with a bending radius of 5 mm. In order to prevent the flexible display module 6000 from being deformed differently in the folding and bending area due to external forces, stop points can be set at corresponding positions on the force-bearing frame 7110 or the mouth-shaped decorative cover 7120. The stop points limit the bending shape of the folding and bending area to prevent the folding and bending area of ​​the flexible display module 6000 from being subjected to external forces to produce W-shaped bending, thereby causing abnormal flexible screen display.

[0192] In some embodiments of the present disclosure, a control panel 8400 may be provided on the function board assembly 5000. The control panel 8400 may include different control areas such as an NFC function area, a wireless panel, a power button, and a touch adjustment bar. For example, the control panel 8400 may be fixed to the front of the second function board 5200 by screws 8410 and located at the end of the flexible display module 6000. Alternatively, the control panel 8400 may be fixed to the front of the second function board 5200. At the same time, the housing of the control panel 8400 may be connected to the second force-bearing housing 7200 by screws 8410, thereby fixing and protecting the control panel 8400 between the housing of the control panel 8400 and the second force-bearing housing 7200.

[0193] As an optional embodiment, as shown in Figures 26 to 28, the foldable electronic device further includes a connecting harness 8100, the two ends of which are respectively connected to the first functional board 5100 and the second functional board 5200, and the connecting harness 8100 is stretchable.

[0194] In some embodiments of the present disclosure, the two folding sides of the flexible display module 6000 can be separately provided with circuit boards serving as control main boards. The circuit boards on the two folding sides of the flexible display module 6000 are respectively fixed on the back of the first functional board 5100 and the second functional board 5200, and can be connected through a connecting harness 8100 to achieve electrical connection and signal connection on the two folding sides of the flexible display module 6000.

[0195] In some embodiments of the present disclosure, the blank area between adjacent folding hinges 1000 in the hinge assembly can be used as a routing area for the connecting wire harness 8100, and the connecting wire harness 8100 passes through the routing area and is distributed on both sides of the hinge assembly.

[0196] In some embodiments of the present disclosure, by making the connection harness 8100 stretchable, it can adapt to the displacement changes of the foldable electronic device during the folding and unfolding process, and prevent the connection from being pulled and disconnected. For example, the connection harness 8100 can be stretchable throughout, or the ends of the connection harness 8100 can be stretchable.

[0197] As an optional embodiment, as shown in Figures 26 to 28, the folding electronic device also includes a decorative cover 8200, which is located on the side of the folding hinge 1000 away from the flexible display module 6000; a wire groove 8300 is provided between the decorative cover 8200 and the first support pressure plate 3100 and the second support pressure plate 3200 for the connection harness 8100 to pass through.

[0198] In some embodiments of the present disclosure, as shown in Figures 26 to 28, a wire duct 8300 for the connection harness 8100 to pass through is provided between the decorative cover plate 8200 and the first and second support plates 3100 and 3200, thereby reserving a certain amount of redundant space for the connection harness 8100, allowing the connection harness 8100 to pass through the wire duct 8300 on both sides of the hinge assembly. During the folding and unfolding of the foldable electronic device, the wire duct 8300 can, to a certain extent, prevent the connection harness 8100 from being compressed by the plate assembly 3000, causing the ends of the connection harness 8100 to become unhooked or broken, thereby preventing display defects caused by the compression of the connection harness 8100.

[0199] As an optional embodiment, the area corresponding to the connecting wire harness 8100 and the wire duct 8300 and the decorative cover plate 8200 are prepared by in-mold injection molding.

[0200] In some embodiments of the present disclosure, by making the area corresponding to the connecting wire harness 8100 and the wire trough 8300 and the decorative cover plate 8200 through in-mold injection molding, the area corresponding to the connecting wire harness 8100 and the wire trough 8300 can be protected by the injection molding material to avoid damage from compression and friction, thereby protecting the connecting wire harness 8100 and extending the service life of the connecting wire harness 8100.

[0201] As an optional embodiment, as shown in FIG. 26 to FIG. 28 , the foldable electronic device is a foldable display device, and the foldable display device has a flexible display module 6000 that can be relatively folded and unfolded.

[0202] As an optional embodiment, as shown in Figures 26 and 32 to 33, the foldable electronic device further includes a bracket assembly 8500, which is disposed on the force-bearing housing assembly 7000 of the foldable electronic device. Optionally, the bracket assembly 8500 is magnetically connected to the force-bearing housing assembly 7000, so that the bracket assembly 8500 can be freely removed or installed on the force-bearing housing assembly 7000. The user can install the bracket assembly 8500 on the force-bearing housing assembly 7000 or remove the bracket assembly 8500 from the force-bearing housing assembly 7000 as needed.

[0203] In some embodiments of the present disclosure, as shown in Figures 26 and 32-33, a stand assembly 8500 includes a magnetic housing 8510 and a folding leg 8530 rotatably connected to the magnetic housing 8510. The magnetic housing 8510 is provided with one or more magnets 8520, which generate a magnetic attraction force, thereby allowing the magnetic housing 8510 to adhere to the force-bearing housing assembly 7000. The folding leg 8530 is rotatably connected to the magnetic housing 8510 via a friction shaft 8540, allowing the folding leg 8530 to rotate relative to the magnetic housing 8510 via the friction shaft 8540, allowing the folding leg 8530 to adhere to the magnetic housing 8510 and unfold away from the magnetic housing 8510. The angle between the folding leg 8530 and the magnetic housing 8510 can be freely adjusted to allow the stand to stand on a table or other platform. When it is necessary to support the folding electronic device, the folding legs 8530 can be unfolded from the magnetic shell 8510 to form a triangular support structure between the folding legs 8530 and the magnetic shell 8510 / force-bearing cover assembly and adjusted to an appropriate angle to support the folding electronic device to stand on a platform such as a desktop; when it is not necessary to support the folding electronic device, the folding legs 8530 can be folded and attached to the magnetic shell 8510.

[0204] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0205] In this disclosure, unless otherwise expressly specified or limited, the terms "connect," "fix," etc. should be understood in a broad sense. For example, "fix" can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two elements or an interaction between two elements, unless otherwise expressly specified. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0206] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0207] Although the embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A folding hinge comprising: Fixed base; A rotating arm assembly, the rotating arm assembly comprising a first rotating arm and a second rotating arm; The first end of the first rotating arm is rotatably disposed on the fixed base, and the first rotating arm has a first rotating axis; the first end of the second rotating arm is rotatably disposed on the fixed base, and the second rotating arm has a second rotating axis; as well as, a conversion arm assembly, the conversion arm assembly comprising a first conversion arm and a second conversion arm, the first end of the first conversion arm being rotatably disposed on the fixed base, and the first conversion arm having a first central axis; The first end of the second conversion arm is rotatably disposed on the fixed base, and the second conversion arm has a second central axis; wherein the first rotation axis and the second rotation axis are located in a first plane, the first central axis and the second central axis are located in a second plane, and the second plane is offset from the first plane; There is a first distance between the first rotation axis and the second rotation axis, and there is a second distance between the first central axis and the second central axis, and the first distance is greater than the second distance.

2. The folding hinge according to claim 1, wherein: The first rotation axis, the second rotation axis, the first central axis, and the second central axis are parallel to each other, and the first plane is parallel to the second plane.

3. The folding hinge according to claim 2, wherein: The rotating arm assembly further comprises: a first auxiliary arm, the first auxiliary arm being connected to the second end of the first rotating arm or being integrally formed with the second end of the first rotating arm, the first auxiliary arm being rotatably and slidably connected to the second end of the first conversion arm; and The second auxiliary arm is connected to the second end of the second rotating arm or is an integral structure with the second end of the second rotating arm. The second auxiliary arm is rotatably and slidably connected to the second end of the second conversion arm.

4. The folding hinge according to claim 2, wherein: The folding hinge further comprises: A hinge shaft assembly, the hinge shaft assembly includes a first hinge shaft and a second hinge shaft, the first hinge shaft is arranged on the fixed base, the center axis of the first hinge shaft coincides with the first center axis, and the first end of the first conversion arm rotates around the first hinge shaft; the second hinge shaft is arranged on the fixed base, the center axis of the second hinge shaft coincides with the second center axis, and the first end of the second conversion arm rotates around the second hinge shaft.

5. The folding hinge according to claim 2, wherein: The first plane is located outside the fixed base.

6. The folding hinge according to claim 5, wherein: The first end of the first rotating arm is provided with a first arc-shaped slide groove or a first slider, and the fixed base is provided with a first protrusion or a first arc-shaped track that matches the first arc-shaped slide groove or the first slider, and the center of the first arc-shaped slide groove or the center of the first arc-shaped track is located on the first rotating axis; the first end of the second rotating arm is provided with a second arc-shaped slide groove or a second slider, and the fixed base is provided with a second protrusion or a second arc-shaped track that matches the second arc-shaped slide groove or the second slider, and the center of the second arc-shaped slide groove or the center of the second arc-shaped track is located on the second rotating axis.

7. The folding hinge according to claim 6, wherein: The fixed base and / or the rotating arm assembly is provided with a first limiting assembly and a second limiting assembly, wherein the first limiting assembly is used to limit the rotation angle of the first rotating arm relative to the fixed base; the second limiting assembly is used to limit the rotation angle of the second rotating arm relative to the fixed base.

8. The folding hinge according to claim 7, wherein: The first end of the first rotating arm has a first rotating track in the fixed base, and the first limiting component is located on the first rotating track; the first end of the second rotating arm has a second rotating track in the fixed base, and the second limiting component is located on the second rotating track.

9. The folding hinge according to claim 8, wherein: The first limiting component is located at the end of the first rotation track; the second limiting component is located at the end of the second rotation track.

10. The folding hinge according to claim 4, further comprising: a synchronization module, the synchronization module being rotatably disposed on the fixed base and located between the first end of the first conversion arm and the first end of the second conversion arm, the synchronization module being transmission-connected to the first end of the first conversion arm and the first end of the second conversion arm respectively; and A torque module is pressed onto the first conversion arm and the second conversion arm to provide torque for the rotation of the first conversion arm and the second conversion arm.

11. The folding hinge according to claim 10, wherein: The torque module includes: A concave cam connecting rod is provided with a first concave-convex portion and a second concave-convex portion connected to the first concave-convex portion, wherein the first concave-convex portion is sleeved on the first hinge shaft, and the second concave-convex portion is sleeved on the second hinge shaft; a first concave cam, sleeved on the first hinge shaft and in transmission connection with the first hinge shaft, wherein the concave and convex ends of the first concave cam are arranged opposite to the first concave and convex portion; a second concave cam, sleeved on the second hinge shaft and transmission-connected to the second hinge shaft, wherein the concave-convex end of the second concave cam is arranged opposite to the second concave-convex portion; a first elastic member, sleeved on the first hinge shaft, wherein the first elastic member creates pressure between the concave-convex end of the first concave cam and the first concave-convex portion; and The second elastic member is sleeved on the second hinge shaft, and the second elastic member creates pressure between the concave and convex end of the second concave cam and the second concave and convex portion.

12. The folding hinge according to claim 11, wherein: The folding hinge has an unfolding angle range of 0° to 180°. When the folding hinge is unfolded from 0° to 15°, the first concave-convex portion has a first inclined surface that contacts the concave-convex end of the first concave cam, and the concave-convex end of the first concave cam moves uphill relative to the first inclined surface. The second concave-convex portion has a second inclined surface that contacts the concave-convex end of the second concave cam, and the concave-convex end of the second concave cam moves uphill relative to the second inclined surface. When the folding hinge is unfolded from 60° to 140°, the first concave-convex portion has a third inclined surface in contact with the concave-convex end of the first concave cam, and the concave-convex end of the first concave cam moves uphill relative to the third inclined surface. The second concave-convex portion has a fourth inclined surface in contact with the concave-convex end of the second concave cam, and the concave-convex end of the second concave cam moves uphill relative to the fourth inclined surface. When the folding hinge is unfolded from 160° to 180°, the first concave-convex portion has a fifth inclined surface in contact with the concave-convex end of the first concave cam, and the concave-convex end of the first concave cam moves downhill relative to the fifth inclined surface; the second concave-convex portion has a sixth inclined surface in contact with the concave-convex end of the second concave cam, and the concave-convex end of the second concave cam moves downhill relative to the sixth inclined surface; Among them, the slope angles of the first slope and the second slope are respectively the first slope angle, the slope angles of the third slope and the fourth slope are respectively the second slope angle, the slope angles of the fifth slope and the sixth slope are respectively the third slope angle, and the first slope angle is greater than the second slope angle, and the third slope angle is greater than the second slope angle.

13. The folding hinge according to claim 3, wherein: A first sliding groove is provided at the second end of the first conversion arm, a second sliding groove is provided at the second end of the second conversion arm, a first sliding pin is provided at the first auxiliary arm, the first sliding pin is located in the first sliding groove and can slide in the first sliding groove, and a second sliding pin is provided at the second auxiliary arm, the second sliding pin is located in the second sliding groove and can slide in the second sliding groove; or, The first auxiliary arm is provided with a first slide rail groove, the second auxiliary arm is provided with a second slide rail groove, the second end of the first conversion arm is provided with a first slide rail pin, the first slide rail pin is located in the first slide rail groove and can slide in the first slide rail groove, the second conversion arm is provided with a first slide rail pin. The second end of the arm is provided with a second slide rail pin, and the second slide rail pin is located in the second slide rail groove and can slide in the second slide rail groove.

14. An integrated folding hinge, wherein: The integrated folding hinge includes two folding hinges as described in any one of claims 1 to 13, the two folding hinges are arranged opposite to each other, the fixed bases of the two folding hinges are an integrated structure, the first rotating arms of the two folding hinges are an integrated structure, and the second rotating arms of the two folding hinges are an integrated structure.

15. A hinge assembly comprising: A pressure plate assembly, comprising a first supporting pressure plate and a second supporting pressure plate; and, At least one folding hinge according to any one of claims 1 to 13, wherein the second end of the first rotating arm of the folding hinge is connected to the first supporting pressure plate, and the second end of the second rotating arm of the folding hinge is connected to the second supporting pressure plate.

16. The hinge assembly according to claim 15, wherein: The hinge assembly further includes at least one integrated folding hinge, wherein the second end of the first rotating arm of the integrated folding hinge is connected to the first supporting pressure plate, and the second end of the second rotating arm of the integrated folding hinge is connected to the second supporting pressure plate.

17. The hinge assembly according to claim 16, further comprising a driven folding hinge, wherein the driven folding hinge comprises: driven base; a first follower arm, wherein a first end of the first follower arm is rotatably disposed on the follower base, a first follower rotation axis is defined between the first follower arm and the follower base, and a second end of the first follower arm is connected to the first support plate; as well as, a second driven arm, wherein a first end of the second driven arm is rotatably disposed on the driven base, a second driven rotation axis is defined between the second driven arm and the driven base, and a second end of the second driven arm is connected to the first supporting plate; The first driven rotation axis coincides with the first rotation axis, and the second driven rotation axis coincides with the second rotation axis.

18. The hinge assembly according to claim 17, wherein: The force applied to the position where the pressure plate assembly is provided with the integrated folding hinge is greater than the force applied to the position where the pressure plate assembly is provided with the driven folding hinge.

19. The hinge assembly according to claim 18, wherein: The integrated folding hinge is distributed at the middle of the first supporting platen and the second supporting platen; the driven folding hinge is distributed at the end portions of the first supporting platen and the second supporting platen.

20. A foldable electronic device, comprising: The hinge assembly according to any one of claims 15 to 19; a function board assembly, comprising a first function board and a second function board, wherein the first function board is connected to the first rotating arm; the second function board is connected to the second rotating arm, and the first function board and the second function board are distributed on opposite sides of the hinge assembly; and The flexible display module covers the first functional board, the second functional board and the hinge assembly.

21. The foldable electronic device according to claim 20, further comprising: A force-bearing housing assembly includes a first force-bearing housing and a second force-bearing housing, wherein the first force-bearing housing is buckled on a side of the first functional board away from the flexible display module; The second force-bearing shell is buckled on a side of the second functional board away from the flexible display module.

22. The foldable electronic device according to claim 21, further comprising: A connecting harness, two ends of which are respectively connected to the first functional board and the second functional board, and the connecting harness is retractable.

23. The foldable electronic device according to claim 22, further comprising: a decorative cover plate, the decorative cover plate being located on a side of the folding hinge away from the flexible display module; A wire groove for the connecting wire harness to pass through is provided between the decorative cover plate and the first supporting pressing plate and the second supporting pressing plate.

24. The foldable electronic device according to claim 23, wherein: The area of ​​the connecting wire harness corresponding to the wire groove and the decorative cover plate are prepared by in-mold injection molding.

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