Hinge and folding electronic equipment

Abstract

The invention provides a hinge and folding electronic equipment, relates to the technical field of terminals, and aims to reduce fit clearances at joints of adjacent parts in the hinge. The hinge comprises a supporting structure, at least two rotating mechanisms and at least one elastic structure, the two rotating mechanisms in the at least two rotating mechanisms are rotationally connected with the two opposite sides of the supporting structure, and the at least one elastic structure is constructed to reduce the fit clearance at the joint of the supporting structure and the rotating mechanisms. And / or a fit clearance is formed at the joint of the adjacent rotating parts in the rotating mechanism.

Description

Technical Field

[0001] The present application relates to the field of terminal technology, and in particular to a hinge and a foldable electronic device. Background Art

[0002] With the development of flexible display technology, foldable electronic devices have gradually become an important trend in the development of mobile terminals because they have the portability of ordinary electronic devices and the good experience of large-screen display after unfolding. Foldable electronic devices mainly rely on hinges when switching between the unfolded position and the folded position, and the folding and unfolding of the hinges drive the flexible display to fold and unfold. However, in the related art, the hinge includes multiple rotating parts connected by a rotating shaft, and the matching gap at the connection of adjacent rotating parts is large, which affects the smoothness of the hinge. Summary of the invention

[0003] The present application provides a hinge and a foldable electronic device, which are used to reduce the matching gap between components rotatably connected in the hinge and improve the smoothness of the hinge.

[0004] According to some embodiments, the present application provides, on one hand, a hinge, comprising a support structure, at least two rotation mechanisms, and at least one elastic structure;

[0005] Two of the at least two rotating mechanisms are rotatably connected to opposite sides of the support structure;

[0006] The at least one elastic structure is configured to reduce a fit clearance at a connection between the support structure and the rotating mechanism, and / or a fit clearance at a connection between adjacent rotating parts in the rotating mechanism.

[0007] In some embodiments, adjacent rotating mechanisms located on the same side of the supporting structure are rotationally connected, and the at least one elastic structure is at least arranged at: the connection between adjacent rotating mechanisms located on the same side of the supporting structure, and the at least one elastic structure is constructed to reduce the fitting clearance at the connection between adjacent rotating mechanisms located on the same side of the supporting structure.

[0008] In some embodiments, the rotating mechanism comprises at least two rotating members that are rotatably connected in sequence, and one of the at least two rotating members located on one side is rotatably connected to the supporting structure;

[0009] The at least one elastic structure is arranged at a connection between the supporting structure and the rotating member, and / or, is arranged at a connection between adjacent rotating members in the rotating mechanism.

[0010] In some embodiments, one elastic structure is provided at each of the connection between the support structure and the rotating member and at the connection between any two adjacent rotating members in the rotating mechanism.

[0011] In some embodiments, the rotating mechanism comprises a first rotating member, a second rotating member and a third rotating member that are rotatably connected in sequence, and the first rotating member is rotatably connected to the supporting structure;

[0012] The at least one elastic structure is disposed at at least one of the following connections:

[0013] A connection between the first rotating member and the supporting structure;

[0014] A connection between the first rotating member and the second rotating member;

[0015] The connection between the second rotating member and the third rotating member.

[0016] In some embodiments, the first rotating member and the second rotating member are rotatably connected via a first rotating shaft, and the second rotating member and the third rotating member are rotatably connected via a second rotating shaft;

[0017] The elastic structure is sleeved on the first rotating shaft and / or the second rotating shaft, and the elastic structure is used to reduce the radial fitting clearance between the second rotating member and the third rotating member and the second rotating shaft respectively, and / or the radial fitting clearance between the first rotating member and the second rotating member and the first rotating shaft respectively when the hinge is in the folded position.

[0018] In some embodiments, the elastic structure includes at least a torsion spring, which is sleeved on the second rotating shaft, and the two ends of the torsion spring are respectively fixedly connected to the second rotating member and the third rotating member, and the torsion spring is constructed to reduce the radial fitting clearance between the second rotating member and the third rotating member and the second rotating shaft when the hinge is in a folded position.

[0019] In some embodiments, the third rotating member has a first connecting portion on a side close to the second rotating member, the second rotating member has a second connecting portion on a side close to the third rotating member, and the third rotating member is rotatably connected to the second rotating member via the first connecting portion, the second rotating shaft and the second connecting portion.

[0020] In some embodiments, the first connecting portion includes at least two first lugs disposed on a side of the third rotating member close to the second rotating member and spaced apart along a first direction, and a first through hole is disposed in the first lug;

[0021] The second connecting portion comprises at least two second lugs which are arranged on a side of the second rotating member close to the third rotating member and are spaced apart along the first direction, and a second through hole is arranged in the second lug;

[0022] The second rotating shaft is disposed in each of the first through holes and each of the second through holes, and can rotate relative to each of the first through holes and each of the second through holes.

[0023] In some embodiments, each of the first lugs is located between two adjacent second lugs, and / or each of the second lugs is located between two adjacent first lugs;

[0024] One end of the torsion spring is located between two of the at least two first lugs at a middle position, and the other end of the torsion spring is located between two of the at least two second lugs at a middle position.

[0025] In some embodiments, the third rotating member includes a main body and a pressure plate fixedly connected to each other, the main body having at least two first docking parts, the pressure plate having at least two second docking parts corresponding to the at least two first docking parts, the first docking parts and the second docking parts are both provided with semicircular holes, and the first docking parts and the second docking parts are correspondingly docked to form the first lug.

[0026] In some embodiments, the second rotating member has a third connecting portion on a side close to the first rotating member, the first rotating member has a fourth connecting portion on a side close to the second rotating member, and the second rotating member is rotatably connected to the first rotating member via the third connecting portion, the first rotating shaft and the fourth connecting portion.

[0027] In some embodiments, the third connection portion includes at least two third lugs disposed on a side of the second rotating member close to the first rotating member and spaced apart along the first direction, and a third through hole is disposed in the third lug;

[0028] The fourth connecting portion comprises at least two fourth lugs which are arranged on a side of the first rotating member close to the second rotating member and are spaced apart along the first direction, and a fourth through hole is arranged in the fourth lug;

[0029] The first rotating shaft passes through each of the third through holes and each of the fourth through holes, and can rotate relative to each of the third through holes and each of the fourth through holes.

[0030] In some embodiments, each of the third lugs is located between two adjacent fourth lugs, and / or each of the fourth lugs is located between two adjacent third lugs;

[0031] Along the first direction, the fourth lugs and the third lugs are arranged alternately.

[0032] In some embodiments, the rotating mechanism includes a first rotating member rotatably connected to the supporting structure, and the elastic structure is disposed at a connection between the first rotating member and the supporting structure.

[0033] In some embodiments, the rotating mechanism includes a first rotating member and a second rotating member, one side of the first rotating member is rotatably connected to the supporting structure, the other side of the first rotating member is rotatably connected to the second rotating member, and the elastic structure is arranged at the connection between the first rotating member and the second rotating member, and / or at the connection between the first rotating member and the supporting structure.

[0034] In some embodiments, the rotating mechanism includes a first rotating member rotatably connected to the supporting structure, the first rotating member includes an arc-shaped mounting portion, the supporting structure includes a third rotating shaft, and the arc-shaped mounting portion is rotatably mounted on an outer peripheral surface of the third rotating shaft;

[0035] The elastic structure is installed between the arc-shaped mounting portion and the third rotating shaft, one end of the elastic structure is fixedly connected to the supporting structure, and the other end of the elastic structure abuts against the outer peripheral surface of the arc-shaped mounting portion. The elastic structure is constructed to make the arc-shaped mounting portion abut against the outer peripheral surface of the third rotating shaft.

[0036] In some embodiments, the support structure includes a support plate and a cover plate that are arranged opposite to each other, the surface of the support plate facing the cover plate is provided with an arc-shaped protrusion that serves as the third rotating shaft, and the surface of the cover plate facing the support plate is provided with an arc-shaped groove, and the arc-shaped groove and the arc-shaped protrusion constitute an arc-shaped mounting groove;

[0037] The arc-shaped mounting portion is rotatably mounted in the arc-shaped mounting groove;

[0038] The elastic structure is located in the arc-shaped mounting groove, and one end of the elastic structure is fixedly connected to the supporting structure, and the other end abuts against the outer peripheral surface of the arc-shaped mounting portion. The elastic structure is constructed so that the arc-shaped mounting portion abuts against the outer peripheral surface of the arc-shaped protrusion.

[0039] In some embodiments, the elastic structure includes an arc-shaped elastic arm, which is installed in the arc-shaped installation groove. One end of the arc-shaped elastic arm is fixedly connected to the support structure, and the other end abuts against the outer peripheral surface of the arc-shaped installation portion.

[0040] In some embodiments, a plurality of spiral oil storage grooves are provided on the mating surfaces of the arc-shaped mounting portion and the arc-shaped protrusion.

[0041] In some embodiments, the hinge further includes at least two synchronization structures corresponding one-to-one to the at least two rotating mechanisms, and the synchronization structure rotates synchronously with a corresponding one of the rotating mechanisms.

[0042] In some embodiments, the rotating mechanism comprises at least a first rotating member, a second rotating member and a third rotating member, the first rotating member is rotatably connected to the supporting structure, the first rotating member is rotatably connected to the second rotating member via a first rotating shaft, and the second rotating member is rotatably connected to the third rotating member via a second rotating shaft;

[0043] The synchronous structure is slidably connected to the third rotating member in the corresponding rotating mechanism, and the synchronous structure is constructed so that when the rotating mechanism rotates relative to the supporting structure, the synchronous structure slides relative to the third rotating member.

[0044] In some embodiments, the synchronization structure includes two synchronization members, the first sides of the two synchronization members of the same synchronization structure are respectively rotationally connected to the support structure, and the second sides of the two synchronization members of the same synchronization structure are respectively slidingly connected to the corresponding third rotation member.

[0045] In some embodiments, the areas of the third rotating member corresponding to the two synchronized members of the same synchronized structure are each provided with a slide groove, and the second sides of the two synchronized members of the same synchronized structure are respectively slidably installed in the corresponding two slide grooves.

[0046] In some embodiments, the hinge further includes at least two transfer members corresponding one-to-one to the at least two synchronization structures, and the transfer members are located between the corresponding synchronization structure and the rotating mechanism, and are rotationally connected to the corresponding synchronization structure and the rotating mechanism.

[0047] In some embodiments, the first side of the intermediate transfer member has a fifth connection portion, and the fifth connection portion is rotatably connected to the fourth connection portion of the first rotating member and the third connection portion of the second rotating member;

[0048] The second side of the transfer member is rotationally connected to the two synchronous members of the same synchronous structure.

[0049] In some embodiments, the fifth connection portion includes at least two fifth lugs disposed on the first side of the transfer member and spaced apart along the first direction, a fifth through hole is disposed in the fifth lug, and the transfer member is rotatably connected to the first rotating member and the second rotating member respectively through the first rotating shaft passing through each of the fifth through holes;

[0050] A fourth rotating shaft is disposed on the second side of the intermediate transfer member, and the fourth rotating shaft is rotationally connected to the two synchronous members of the same synchronous structure.

[0051] In some embodiments, along the first direction, the two ends of the intermediate transfer member are respectively provided with first stop portions, the two ends of the second rotating member are respectively provided with second stop portions, and the two ends of the third rotating member are respectively provided with third stop portions, and the first stop portion, the second stop portion and the third stop portion are respectively constructed so that the centers of the first rotating axis, the second rotating axis and the fourth rotating axis are on the same straight line when the hinge is in the folded position.

[0052] In some embodiments, the first stop portion includes a first arcuate concave surface, the second stop portion includes a first arcuate convex surface, and the first arcuate convex surface is located inside the first arcuate concave surface;

[0053] The second stop portion also includes a first inclined portion away from the first arcuate concave surface, and the third stop portion includes a second inclined portion. When the hinge is in the folded position, the first inclined portion and the second inclined portion are in contact with each other, and the centers of the first arcuate concave surface, the first arcuate convex surface, the first rotating shaft, the second rotating shaft and the fourth rotating shaft are on the same straight line.

[0054] In some embodiments, a gear set is disposed at each end of the support structure, each of the gear sets includes two meshing synchronous gears, the two synchronous gears of the two gear sets correspond to each other and are respectively located on two parallel axes, and the two axes are symmetrical with respect to the first center line of the support structure;

[0055] The first sides of the two synchronized parts of the same synchronized structure are respectively rotatably connected to the two synchronized gears located on the same side of the first center line, and the second sides of the two synchronized parts of the same synchronized structure are slidably connected to the corresponding third rotating part; the two synchronized parts of the same synchronized structure are rotatably connected to the intermediate transfer part through a fourth rotating shaft.

[0056] In some embodiments, two pull rods are respectively disposed at two ends of the support structure, and the two pull rods are symmetrical relative to the first center line of the support structure;

[0057] The first sides of the two synchronizers of the same synchronizer structure are each provided with a transmission part, and the two transmission parts are sleeved on the two pull rods located on the same side of the first center line. The second sides of the two synchronizers of the same synchronizer structure are slidably connected to the corresponding third rotating part.

[0058] In some embodiments, an annular groove is provided in the area of ​​the pull rod near its insertion end, and a limiting hole is provided in the area of ​​the support structure corresponding to the annular groove. A clamping piece is installed in the limiting hole and engages with the annular groove and the limiting hole respectively.

[0059] In some embodiments, the clamping member is a U-shaped clamping member, and the distance between the two side walls of the U-shaped clamping member is smaller than the outer diameter of the pull rod and larger than the bottom diameter of the annular clamping groove.

[0060] In some embodiments, the hinge further comprises a damping adjustment mechanism, wherein the damping adjustment mechanism comprises a damping plate, a damping gear and a damping spring;

[0061] The damping gear, the damping spring and the damping plate are sleeved on the pull rod, the damping plate is located between the damping gear and the damping spring, and two ends of the damping spring are respectively in contact with the damping plate and the pull rod;

[0062] The damping gear is meshed with the synchronous gear, and the first end of each damping gear is engaged with the corresponding synchronous member, and the second end of each damping gear is provided with a plurality of first convex tooth portions, and the plurality of first convex tooth portions are arranged at intervals along the circumferential direction of the damping gear; the damping plate is provided with a plurality of second convex tooth portions adapted to the plurality of first convex tooth portions on one side facing the damping gear.

[0063] In some embodiments, the first end of each of the damping gears is provided with at least two notches, the synchronizer is provided with at least two protrusions, and the at least two notches are engaged with the at least two protrusions.

[0064] In some embodiments, the damping adjustment mechanism further includes an end plate and an auxiliary spring, the end plate is sleeved on the pull rod, and the end plate abuts against the pull rod;

[0065] The end plate is provided with a first limit pin, and the damping plate is provided with a second limit pin directly opposite to the first limit pin; the auxiliary spring is sleeved on the first limit pin and the second limit pin, and the two ends of the auxiliary spring are respectively in contact with the damping plate and the end plate.

[0066] According to some embodiments, the present application provides a foldable electronic device on the other hand, including the hinge described in the above embodiments.

[0067] In the hinge provided by the present application, an elastic structure is provided at the connection between the support structure and the rotating mechanism, and / or at the connection between adjacent rotating parts in the rotating mechanism, and the elastic force provided by the elastic structure is used to reduce the matching clearance between the components connected in rotation in the hinge, thereby improving the smoothness and stability of the hinge. In addition, the elastic force provided by the elastic structure can also reduce the abnormal rotation noise when the hinge switches between the folded position and the unfolded position. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0069] Figure 1 A schematic diagram of the structure of the hinge provided in an embodiment of the present application.

[0070] Figure 2 for Figure 1 Schematic diagram of the structure of the rotating mechanism.

[0071] Figure 3 This is an assembly structure diagram of the hinge provided in an embodiment of the present application.

[0072] Figure 4 for Figure 3 Exploded diagram of the middle hinge.

[0073] Figure 5 for Figure 3 Exploded view of the central support structure from the first perspective.

[0074] Figure 6 for Figure 3 Exploded view of the middle support structure from the second perspective.

[0075] Figure 7 for Figure 3 Sectional view along AA direction.

[0076] Figure 8 for Figure 3 Exploded view of the rotating mechanism.

[0077] Fig. 9 for Figure 8 Further exploded view of the rotating mechanism.

[0078] Fig.10 for Figure 3 Cross-sectional view along the BB axis.

[0079] Fig.11 for Figure 3 Front exploded view of the middle damping adjustment mechanism.

[0080] Fig.12 for Figure 3 Exploded rear view of the center damping adjustment mechanism. DETAILED DESCRIPTION

[0081] In the related art, a hinge includes a plurality of rotating parts connected by a rotating shaft, and the fitting clearance at the connection of adjacent rotating parts is large, which affects the smoothness and stability of the hinge. In view of this, an embodiment of the present application provides a hinge, in which an elastic structure is arranged at the connection of two parts connected in rotation in the hinge, and the elasticity of the elastic structure is used to reduce the fitting clearance between the parts connected in rotation, thereby improving the smoothness and stability of the hinge.

[0082] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with reference to embodiments. These embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0083] refer to Figure 1-Figure 12 ,in, Figure 1 A schematic diagram of the structure of the hinge provided in the embodiment of the present application, Figure 2 for Figure 1 The structural diagram of the rotating mechanism. Figure 3 This is an assembly structure diagram of the hinge provided in the embodiment of the present application, Figure 4 for Figure 3 Schematic diagram of the middle hinge. Figure 5 for Figure 3 Exploded view of the central support structure from the first perspective. Figure 6 for Figure 3 Exploded view of the middle support structure from the second perspective. Figure 7 for Figure 3 Sectional view along AA direction, Figure 8 for Figure 3 Exploded view of the rotating mechanism. Fig. 9 for Figure 8 Further exploded view of the rotating mechanism, Fig.10 for Figure 3 Cross-sectional view along the BB axis. Fig.11 for Figure 3 Front exploded view of the middle damping adjustment mechanism. Fig.12 for Figure 3 Exploded rear view of the center damping adjustment mechanism.

[0084] The present application provides a hinge that can be used in a foldable electronic device, and the hinge can be used to fold and unfold the foldable electronic device. Figure 1 and Figure 2As shown, the hinge provided in the embodiment of the present application includes a support structure 100, at least two rotating mechanisms 200 and at least one elastic structure 300, wherein at least one rotating mechanism 200 is rotatably connected to each of the two opposite sides of the support structure 100, for example, one rotating mechanism 200 is rotatably connected to each of the two opposite sides of the support structure 100. For another example, two rotating mechanisms 200 are rotatably connected to each of the two opposite sides of the support structure 100. The number of rotating mechanisms 200 rotatably connected to the two opposite sides of the support structure 100 can be the same or different, and can be set as needed.

[0085] The elastic structure 300 is disposed at the connection between the support structure 100 and the rotating mechanism 200, and / or at the connection between adjacent rotating members 201 in the same rotating mechanism 200. The elastic structure 300 is configured to at least reduce the matching clearance at the connection between the support structure 100 and the rotating mechanism 200, and / or at the connection between adjacent rotating members 201 in the rotating mechanism 200.

[0086] In some embodiments, the elastic structure 300 may also be disposed at the connection between adjacent rotating mechanisms 200 located on the same side of the supporting structure 100. In this case, the elastic structure 300 is also configured to reduce the fitting clearance at the connection between the two rotating mechanisms 200 that are rotationally connected.

[0087] In the hinge provided in this embodiment, an elastic structure 300 is provided at the connection between the support structure 100 and the rotating mechanism 200, and / or at the connection between adjacent rotating members 201 in the rotating mechanism 200, and the elastic force provided by the elastic structure is used to reduce the matching clearance between the components connected in rotation in the hinge, thereby improving the smoothness and stability of the hinge. In addition, the elastic force provided by the elastic structure 300 can also reduce the abnormal rotation noise when the hinge switches between the folded position and the unfolded position.

[0088] It is understood that in this embodiment and the following embodiments, "connection" refers to the position or area where two or more parts are rotatably connected. The elastic structure 300 is arranged at the connection, including but not limited to being arranged inside the connection, and being partially arranged inside the connection and partially arranged outside the connection. In other words, the elastic structure 300 can be located between two parts that are rotatably connected, or a part of it can be arranged between the two parts that are rotatably connected, and the other part can be arranged outside the two parts that are rotatably connected.

[0089] The support structure 100 is used at least to support the flexible display screen of the foldable electronic device and to connect other structures in the hinge, such as to rotate the connecting rotating mechanism 200. The support structure 100 can be a columnar, plate-shaped or other shaped structure, which is not limited in this embodiment. In addition, the support structure 100 can be a symmetrical structure or an asymmetrical structure. As an example, Figure 3 As shown, the support structure 100 has a first center line 101 and a second center line 102, and the first center line 101 is perpendicular to the second center line 102. The left and right sides of the support structure 100 are symmetrical relative to the first center line 101, and the upper and lower ends of the support structure 100 are symmetrical relative to the second center line 102.

[0090] The rotating mechanism 200 is rotatably connected to the supporting structure 100. The rotating mechanism 200 is also connected to the flexible display screen in the foldable electronic device, and is used to support the flexible display screen and realize the folding and unfolding of the flexible display screen. There are many ways to rotatably connect the rotating mechanism 200 and the supporting structure 100. For example, the rotating mechanism 200 and the supporting structure 100 are rotatably connected through a rotating shaft; for another example, the rotating mechanism 200 and the supporting structure 100 are rotatably connected through a matching arc-shaped mounting groove and an arc-shaped mounting portion; for another example, the rotating mechanism 200 and the supporting structure 100 are rotatably connected through a hinge.

[0091] As an example, the rotating mechanism 200 is rotatably connected to the support structure 100 via a rotating shaft, wherein the rotating shaft extends along a first direction, and at least one of the rotating mechanism 200 and the support structure 100 can rotate relative to the rotating shaft. At least one rotating mechanism 200 can be rotatably connected to each of the two opposite sides of the support structure 100. When two or more rotating mechanisms 200 are rotatably connected to the two opposite sides of the support structure 100, the rotating mechanisms 200 located on the same side of the support structure 100 can also be rotatably connected via the rotating shaft. When the hinge is in the unfolded position, the rotating mechanisms 200 are located on the two opposite sides of the support structure 100 and are arranged along a second direction, which is perpendicular to the first direction.

[0092] It is understood that the "expanded position" means that the hinge can be unfolded to an open state, at which time the rotating mechanism 200 and the supporting structure 100 can be in the same plane. The "folded position" means that the hinge can be folded to a closed state, and the hinge can have a teardrop-shaped cross-section after closing.

[0093] The rotating mechanism 200 may include one rotating member 201, two rotating members 201, or a plurality of rotating members 201, that is, the rotating mechanism 200 includes at least one rotating member 201. When the rotating mechanism 200 includes at least two rotating members 201, each rotating member 201 in the rotating mechanism 200 may be rotated along Figure 3 The rotating members 201 are arranged sequentially in the second direction, and two adjacent rotating members 201 are rotatably connected via a rotating shaft, which extends along the first direction.

[0094] It is understandable that the first direction can be Figure 3 The first direction is the same as the extending direction of the first center line 101, and the second direction can be Figure 3The second direction is the same as the extension direction of the second center line 102. The two sides of the support structure 100 are as follows: Figure 3 The left and right sides of the support structure 100 when the hinge is in the unfolded position, and the two ends of the support structure 100 are as shown in FIG. Figure 3 The upper and lower ends of the support structure are shown.

[0095] like Figure 1 and Figure 2 As shown, the elastic structure 300 is disposed at at least one of the following connections: the connection between the support structure 100 and the rotating mechanism 200 , the connection between adjacent rotating mechanisms 200 on the same side of the support structure 100 , and the connection between two adjacent rotating members 201 in the rotating mechanism 200 .

[0096] As an example, Figure 3 and Figure 4 As shown, the rotating mechanism 200 includes a first rotating member 210, a second rotating member 220 and a third rotating member 230 which are rotatably connected in sequence, and the first rotating member 210 is rotatably connected to the supporting structure 100. The elastic structure 300 is disposed at at least one of the following connections: the connection between the first rotating member 210 and the supporting structure 100, the connection between the first rotating member 210 and the second rotating member 220, and the connection between the second rotating member 220 and the third rotating member 230. In other words, the elastic structure 300 is disposed at the connection between two components which are rotatably connected in the hinge, and is used to reduce the matching clearance between the two components which are rotatably connected at their connection.

[0097] The elastic structure 300 may be a torsion spring, an arc-shaped spring sheet, an arc-shaped elastic arm, a rubber strip or other elastic device. The following describes the configuration of the elastic structure 300 and its exemplary structure by taking examples.

[0098] In some embodiments, the rotating mechanism 200 includes a rotating member 201, that is, the rotating mechanism 200 includes a first rotating member 210, and the first rotating member 210 is rotatably connected to the support structure 100, for example, the rotatable connection can be achieved through a rotating shaft, or through a matching arc-shaped mounting groove and an arc-shaped mounting portion, or through a hinge. As an example, the first rotating member 210 is rotatably connected to the support structure 100 through a matching arc-shaped mounting groove and an arc-shaped mounting portion. In this case, the elastic structure 300 is arranged at the connection between the support structure 100 and the first rotating member 210.

[0099] In other embodiments, the rotating mechanism 200 includes two rotating members 201, that is, the rotating mechanism 200 includes a first rotating member 210 and a second rotating member 220, wherein one side of the first rotating member 210 is rotatably connected to the support structure 100, and the other side of the first rotating member 210 is rotatably connected to the second rotating member 220. The rotational connection between the support structure 100 and the first rotating member 210, and between the first rotating member 210 and the second rotating member 220 can be achieved through a rotating shaft, or through a matching arc-shaped mounting groove and an arc-shaped mounting portion, or through a hinge. As an example, the rotational connection between the support structure 100 and the first rotating member 210, and between the first rotating member 210 and the second rotating member 220 is achieved through a rotating shaft.

[0100] When the rotating mechanism 200 includes two rotating members 201, the number of the elastic structure 300 can be one, in which case the elastic structure 300 is disposed at the connection between the supporting structure 100 and the first rotating member 210, or the elastic structure 300 is disposed at the connection between the first rotating member 210 and the second rotating member 220. The number of the elastic structure 300 can also be two, in which case one of the two elastic structures 300 is disposed at the connection between the supporting structure 100 and the first rotating member 210, and the other is disposed at the connection between the first rotating member 210 and the second rotating member 220.

[0101] In other embodiments, the rotating mechanism 200 includes three or N rotating members 201, that is, the rotating mechanism 200 includes a first rotating member 210, a second rotating member 220, a third rotating member 230 ... an Nth rotating member, where N is a positive integer greater than three. These rotating members 201 are sequentially connected in rotation along the second direction, for example, the rotation connection can be achieved through a rotating shaft, or through a matching arc-shaped mounting groove and an arc-shaped mounting portion, or through a hinge. As an example, the rotating mechanism 200 includes three rotating members 201, namely a first rotating member 210, a second rotating member 220, and a third rotating member 230; wherein, the supporting structure 100 and the first rotating member 210, the first rotating member 210 and the second rotating member 220, and the second rotating member 220 and the third rotating member 230 can be connected in rotation through a rotating shaft, or through a matching arc-shaped mounting groove and an arc-shaped mounting portion, or through a hinge. In this example, the support structure 100 and the first rotating member 210 , the first rotating member 210 and the second rotating member 220 , and the second rotating member 220 and the third rotating member 230 are all rotatably connected via a rotating shaft.

[0102] The number of elastic structures 300 can be one, in which case the elastic structure 300 is disposed at the connection between the support structure 100 and the first rotating member 210, or the elastic structure 300 is disposed at the connection between the first rotating member 210 and the second rotating member 220, or the elastic structure 300 is disposed at the connection between the second rotating member 220 and the third rotating member 230.

[0103] The number of the elastic structures 300 can be two, in which case one of the two elastic structures 300 is arranged at the connection between the support structure 100 and the first rotating member 210, and the other is arranged at the connection between the first rotating member 210 and the second rotating member 220; or, one of the two elastic structures 300 is arranged at the connection between the support structure 100 and the first rotating member 210, and the other is arranged at the connection between the second rotating member 220 and the third rotating member 230; or, one of the two elastic structures 300 is arranged at the connection between the first rotating member 210 and the second rotating member 220, and the other is arranged at the connection between the second rotating member 220 and the third rotating member 230.

[0104] It should be noted that the more the number of rotating parts 201 included in the rotating mechanism 300, the more degrees of freedom the hinge having such a rotating mechanism has. For example, the rotating mechanism 200 includes three rotating parts 201, so that each rotating mechanism 200 can provide three degrees of freedom of rotation, and two rotating mechanisms 200 can provide six degrees of freedom of rotation, and so on. When the number of rotating mechanisms 200 included in the hinge and the number of rotating parts 201 included in the rotating mechanism 200 are more, the hinge also has more degrees of freedom accordingly, so that the flexible display screen of the foldable electronic device using the hinge can be better fitted with the hinge when folded, and the flexible display screen can be better unfolded when unfolded.

[0105] The following will further describe the rotating mechanism 200 including three rotating members 201 as an example. That is, the rotating mechanism 200 includes a first rotating member 210, a second rotating member 220 and a third rotating member 230, wherein the first rotating member 210 and the second rotating member 220 are rotationally connected via a first rotating shaft 610, the second rotating member 220 and the third rotating member 230 are rotationally connected via a second rotating shaft 620, and the first rotating member 210 and the supporting structure 100 are rotationally connected via a third rotating shaft.

[0106] The elastic structure 300 is disposed at at least one of the following connections: the connection between the first rotating member 210 and the supporting structure 100, the connection between the first rotating member 210 and the second rotating member 220, and the connection between the second rotating member 220 and the third rotating member 230. That is, the elastic structure 300 can be disposed at the connection between the first rotating member 210 and the second rotating member 220, or at the connection between the second rotating member 220 and the third rotating member 230, or at the connection between the supporting structure 100 and the first rotating member 210, and the elastic structure 300 can be disposed at all connections in the hinge. In this example, there is one elastic structure 300, which is disposed at the connection between the second rotating member 220 and the third rotating member 230.

[0107] In some embodiments, Figure 3-Figure 7 As shown, two third rotating shafts are arranged on opposite sides of the support structure 100, and the two rotating mechanisms 200 are respectively connected to the support structure 100 through the two third rotating shafts. The third rotating shaft can be a separate structure from the support structure 100, or can be an integrated structure with the support structure 100. If the third rotating shaft is an integrated structure with the support structure 100, the third rotating shaft is a part of the support structure 100.

[0108] As an example, the two third rotating shafts can be symmetrically arranged relative to the first center line 101 of the support structure 100, and the rotating mechanism 200 to which the two third rotating shafts are respectively rotatably connected can also be symmetrically arranged relative to the first center line 101 of the support structure 100. The rotating mechanism 200 includes a first rotating member 210, which is rotatably connected to the support structure 100 via the third rotating shaft.

[0109] In some embodiments, Figure 3-Figure 7 As shown, the first rotating member 210 includes an arc-shaped mounting portion 211, which is rotatably mounted on the outer circumference of the third rotating shaft, wherein the shape of the arc-shaped mounting portion 211 can be an arc or approximately an arc. The elastic structure 300 is installed between the arc-shaped mounting portion 211 and the third rotating shaft, one end of the elastic structure 300 is fixedly connected to the support structure 100, and the other end of the elastic structure 300 abuts against the outer circumference of the arc-shaped mounting portion 211, and the elastic structure 300 is configured to make the arc-shaped mounting portion 211 abut against the outer circumference of the third rotating shaft.

[0110] As an example, Figure 5 , Figure 6 and Figure 7As shown, the support structure 100 includes a support plate 110 and a cover plate 120. The front of the support plate 110 is used to support the flexible display screen, and the back of the support plate 110 is fixedly connected to the cover plate 120, for example, by a plurality of screws and a plurality of connecting pins. The surface of the support plate 110 facing the cover plate 120, i.e., the back of the support plate 110, is provided with an arc-shaped protrusion 111 as a third rotating shaft, and the cross-section of the arc-shaped protrusion 111 can be an arc or an approximately arc-shaped cross-section, with the plane perpendicular to the first center line 101 as the cross-section.

[0111] In this example, each third rotating shaft corresponds to an arc-shaped protrusion 111, that is, two arc-shaped protrusions 111 are provided on the back of the support plate 110, and the two arc-shaped protrusions 111 are symmetrical with respect to the first center line 101. Correspondingly, two arc-shaped grooves 123 are provided on the surface of the cover plate 120 facing the support plate 120, and the two arc-shaped grooves 123 correspond to the two arc-shaped protrusions 111 one by one, and each arc-shaped groove 123 and the corresponding arc-shaped protrusion 111 form an arc-shaped installation groove 130, and the cross-section of the arc-shaped installation groove 130 can be a circular ring or a nearly circular ring, with the plane perpendicular to the first center line 101 as the cross section.

[0112] The arc-shaped mounting portion 211 of the first rotating member 210 is rotatably mounted in the arc-shaped mounting groove 130. The arc-shaped mounting groove 130 can be used to rotate the arc-shaped mounting portion 211 of the first rotating member 210 relative to the arc-shaped protrusion (third rotating shaft) 111. The first rotating member 210 can also be extended or retracted along the arc-shaped mounting groove 130 during the rotation of the first rotating member 210 relative to the arc-shaped protrusion 111, thereby allowing the hinge to have the ability to adjust its length, thereby enabling the hinge to be suitable for flexible display screens of various lengths, thereby improving the applicability of the hinge.

[0113] When the elastic structure 300 is disposed at the connection between the support structure 100 and the first rotating member 210, the elastic structure 300 can be disposed in the arc-shaped installation groove 130, one end of the elastic structure 300 is fixedly connected to the support structure 100, for example, fixedly connected to the cover plate 120, and the other end of the elastic structure 300 abuts against the outer circumference of the arc-shaped installation portion 211. When the arc-shaped installation portion 211 rotates relative to the arc-shaped protrusion 111, the elastic structure 300 presses the arc-shaped installation portion 211 to abut against the outer circumference of the arc-shaped protrusion 111 as the third rotating shaft, that is, the elastic structure 300 will provide an elastic force to abut the outer circumference of the arc-shaped protrusion 111, thereby reducing the radial matching clearance between the arc-shaped installation portion 211 of the first rotating member 210 and the arc-shaped protrusion 111 as the third rotating shaft, improving the smoothness and stability of the hinge, and also eliminating the abnormal rotation noise between the first rotating member 210 and the support structure 100.

[0114] As an example, the elastic structure 300 may include an arc-shaped elastic arm, which is installed in the arc-shaped installation groove 130, one end of the arc-shaped elastic arm is located outside the arc-shaped installation groove 130 and fixedly connected to the support structure 100, and the other end abuts against the outer peripheral surface of the arc-shaped installation portion 211.

[0115] It is understandable that the length of the arc-shaped installation groove 130 can be selected as needed. For example, the length of the arc-shaped installation groove 130 is a quarter of a circle, so that the arc-shaped installation portion 211 can rotate between 0-90 degrees relative to the arc-shaped installation groove 130.

[0116] In some embodiments, Figure 6 As shown, the inner side surface of the arc-shaped mounting portion 211 is provided with a plurality of spiral oil storage grooves 214, that is, the mating surface of the arc-shaped mounting portion 211 and the arc-shaped protrusion 111 is provided with a spiral oil storage groove 214, and the spiral oil storage groove 214 is used to store lubricating oil or grease. As an example, the spiral oil storage groove 214 extends along the circumferential direction of the arc-shaped mounting portion 211, and each spiral oil storage groove 214 is arranged at equal intervals along the axial direction of the third rotating shaft.

[0117] By providing a spiral oil storage groove 214 on the inner side of the arc-shaped mounting portion 211, on the one hand, the spiral oil storage groove 214 can be used to disperse the force on the accessories of the spiral oil storage groove 214, so that the force is not on the same circumference of the arc-shaped mounting portion 211, thereby improving the impact strength of the arc-shaped mounting portion 211; on the other hand, the use of the spiral oil storage groove 214 also facilitates the flow of lubricating oil, thereby making the lubrication between the arc-shaped mounting portion 211 and the arc-shaped protrusion 111 more sufficient.

[0118] The side of the first rotating member 210 close to the supporting structure 100 is rotatably connected to the supporting structure 100 via the third rotating shaft, and the side of the first rotating member 210 away from the supporting structure 100 is rotatably connected to the second rotating member 220 via the first rotating shaft 610. In some embodiments, the side of the second rotating member 220 close to the first rotating member 210 has a third connecting portion, and the side of the first rotating member 210 close to the second rotating member 220 has a fourth connecting portion, and the second rotating member 220 is rotatably connected to the first rotating member 210 via the third connecting portion, the first rotating shaft 610, and the fourth connecting portion.

[0119] As an example, Figure 4-Figure 9 As shown, the fourth connecting portion includes at least two fourth lugs 212 arranged on the side of the first rotating member 210 away from the supporting structure 100, each fourth lug 212 is arranged at intervals along the first direction, each fourth lug 212 is provided with a fourth through hole 213, and the center lines of the fourth through holes 213 in each fourth lug 212 coincide, or in other words, each fourth through hole 213 in the first rotating member 210 is coaxially arranged.

[0120] Correspondingly, the third connection portion includes at least two third lugs 221 disposed on one side of the second rotating member 220 close to the first rotating member 210 and spaced apart along the first direction, each third lug 221 is provided with a third through hole 223, and each third through hole 223 is coaxially disposed. The second rotating member 220 and the first rotating member 210 are rotatably connected via a first rotating shaft 610 penetrating through each third through hole 223 and each fourth through hole 213.

[0121] When the second rotating member 220 and the first rotating member 210 are rotatably connected via the first rotating shaft 610 passing through each third through hole 223 and each fourth through hole 213, each third lug 221 is located between two adjacent fourth lugs 212, and / or each fourth lug 212 is located between two adjacent third lugs 221; and along the first direction, each fourth lug 212 is alternately arranged with each third lug 221. In other words, the third lug 221 is located in the accommodation space formed by two adjacent fourth lugs 212, the fourth lug 212 is located in the accommodation space formed by two adjacent third lugs 221, and the third lug 221 and the fourth lug 212 are mutually inserted in the accommodation space formed by each other and are alternately arranged along the first direction.

[0122] As an example, Figure 4 , Figure 5 , Figure 6 , Figure 8 and Fig. 9 As shown, the second rotating member 220 includes three third lugs 221, and the first rotating member 210 includes two fourth lugs 212, the two fourth lugs 212 are respectively located between the three third lugs 221, and along the first direction, the fourth lugs 212 are alternately arranged with the third lugs 221. That is, when the second rotating member 220 and the first rotating member 210 are rotationally connected via the first rotating shaft 610, the two fourth lugs 212 are respectively located between two adjacent third lugs 221, and the third lug 221 located in the middle is located between the two fourth lugs 212.

[0123] One side of the second rotating member 220 is rotatably connected to the first rotating member 210 via the first rotating shaft 610, and the other side of the second rotating member 220 is rotatably connected to the third rotating member 230 via the second rotating shaft 620. The elastic structure 300 is sleeved on the first rotating shaft 610 and / or the second rotating shaft 620, and the elastic structure 300 is used to reduce the radial matching clearance between the second rotating member 220 and the third rotating member 230 and the second rotating shaft 620 respectively, and / or the radial matching clearance between the first rotating member 210 and the second rotating member 220 and the first rotating shaft 610 respectively when the hinge is in the folded position.

[0124] In some embodiments, Figure 4 , Figure 8 and Fig. 9 As shown, the elastic structure 300 arranged at the connection between the second rotating member 220 and the third rotating member 230 includes a torsion spring 301, which is sleeved on the second rotating shaft 620. The two ends of the torsion spring 301 are respectively fixedly connected to the second rotating member 220 and the third rotating member 230. The two ends of the torsion spring 301 can provide reverse torsion, so that when the hinge is in the folded position, the torsion spring 301 can reduce the radial matching clearance between the second rotating member 220 and the third rotating member 230 and the second rotating shaft 620 respectively.

[0125] There are various modes of rotational connection between the second rotating member 220 and the third rotating member 230. In some embodiments, the third rotating member 230 has a first connection portion on a side close to the second rotating member 220, and the second rotating member 220 has a second connection portion on a side close to the third rotating member 230. The third rotating member 230 is rotationally connected to the second rotating member 220 via the first connection portion, the second rotating shaft 620, and the second connection portion.

[0126] As an example, Figure 4 , Figure 8 and Fig. 9 As shown, the first connection portion includes at least two first lugs 235 disposed on a side of the third rotating member 230 close to the second rotating member 220 and spaced apart along the first direction, a first through hole 236 is disposed in the first lug 235, and each first through hole 236 is coaxially disposed. Correspondingly, the second connection portion includes at least two second lugs 224 disposed on a side of the second rotating member 220 close to the third rotating member 230 and spaced apart along the first direction, a second through hole 225 is disposed in the second lug 224, and each second through hole 225 is coaxially disposed. The second rotating shaft 620 is disposed through each first through hole 236 and each second through hole 225, so that the second rotating member 220 and the third rotating member 230 are rotatably connected through the second rotating shaft 620.

[0127] Each first lug 235 is located between two adjacent second lugs 224, and / or each second lug 224 is located between two adjacent first lugs 235; one end of the torsion spring 301 is located between two first lugs in the middle of at least two first lugs 235, and the other end of the torsion spring 301 is located between two second lugs in the middle of at least two second lugs 224. In this example, the third rotating member 230 includes four first lugs 235, and the second rotating member 220 includes two second lugs 224. One end of the torsion spring 301 is fixedly connected to the third rotating member 230 between two first lugs 235 in the middle of the four first lugs 235, and the other end of the torsion spring 301 is fixedly connected to the second rotating member 220 between the two second lugs 224. When the second rotating member 220 and the third rotating member 230 are rotatably connected via the second rotating shaft 620, the two second lugs 224 are respectively located between the four first lugs 235.

[0128] In some embodiments, Figure 4 , Figure 8 and Fig. 9 As shown, the third rotating member 230 includes a main body 231 and a pressure plate 232 which are fixedly connected, the main body 231 has at least two first docking parts 235a, the pressure plate 232 has at least two second docking parts 235b corresponding to the at least two first docking parts 235a, and semicircular holes are provided in the first docking parts 235a and the second docking parts 235b, and a first docking part 235a and a second docking part 235b corresponding to each other are docked to form a first lug 235.

[0129] Exemplarily, the first docking portion 235a and the second docking portion 235b can be semi-lug structures, each of which is provided with a semicircular hole. After the first docking portion 235a and the second docking portion 235b are docked, a first lug 235 can be formed, and the semicircular holes in the two semi-lug structures can form a first through hole 236.

[0130] By designing the first lug 235 to be formed by a first docking portion 235a and a second docking portion 235b, the second rotating shaft 620 and the torsion spring 301 can be easily installed on or removed from the third rotating member 230, thereby facilitating maintenance of the hinge.

[0131] In the above-mentioned hinge, the torsion spring 301 is arranged at the connection between the second rotating member 220 and the third rotating member 230. When the hinge switches or stays between the unfolded position and the folded position, the torsion force provided by the torsion spring 301 can make the second rotating member 220 and the third rotating member 230 abut against the outer peripheral surface of the second rotating shaft 620, thereby reducing the radial matching clearance between the second rotating member 220 and the third rotating member 230 and the second rotating shaft 620, thereby improving the smoothness and stability of the hinge. At the same time, it can also reduce the abnormal rotation noise between the second rotating member 220 and the third rotating member 230 when the hinge switches between the unfolded position and the folded position.

[0132] On the basis of the above embodiment, the hinge further comprises at least two synchronization structures 400 corresponding to at least two rotation mechanisms 200, and the synchronization structure 400 rotates synchronously with the corresponding rotation mechanism 200. As an example, Figure 3 , Figure 4 , Figure 8 and Fig. 9 As shown, the hinge includes two synchronization structures 400, and the two synchronization structures 400 are respectively rotationally connected to the two rotating mechanisms 200, that is, each synchronization structure 400 is rotationally connected to a corresponding rotating mechanism 200. With such a design, the two rotating mechanisms 200 can be kept rotating synchronously by using the two synchronization structures 400, thereby improving the rotation stability of the hinge.

[0133] In some embodiments, the rotating mechanism 200 includes a first rotating member 210, a second rotating member 220, and a third rotating member 230. The first rotating member 210 and the second rotating member 220 are rotatably connected via a first rotating shaft 610. The first rotating member 210 is also rotatably connected to the support structure 100 via a third rotating shaft. The second rotating member 220 and the third rotating member 230 are rotatably connected via a second rotating shaft 620. Each synchronous structure 400 is also slidably connected to a rotating member 201 in the corresponding rotating mechanism 200. For example, the side of the synchronous structure 400 away from the support structure 100 is slidably connected to the third rotating member 230, so that when the rotating mechanism 200 rotates relative to the support structure 100, the synchronous structure 400 slides relative to the third rotating member 230. With such a design, by utilizing the sliding connection between the synchronization structure 400 and at least one rotating part 201 in the corresponding rotating mechanism 200, not only can the synchronization structure 400 be utilized to make the two rotating mechanisms 200 rotate synchronously, but also the relative sliding between the synchronization structure 400 and the rotating part 201 can be used to adapt to the change in the distance between the synchronization structure 400 and the rotating mechanism 200, thereby improving the rotation smoothness of the hinge when switching between the unfolded position and the folded position.

[0134] In addition, when the synchronization structure 400 is slidingly connected to the rotating part 201 in the same rotating mechanism 200 that is farthest from the supporting structure 100, for example, in this example, the synchronization structure 400 is slidingly connected to the third rotating part 230 located at the outermost side of the rotating mechanism 200, the movement consistency of each rotating part 201 in the rotating mechanism 200 can be improved, thereby improving the rotation synchronization and stability of the synchronization structure 400 and the rotating mechanism 200.

[0135] In some embodiments, Figure 3 , Figure 4 , Figure 8 and Fig. 9 As shown, each synchronization structure 400 includes two synchronization members 401, and the first sides of the two synchronization members 401 of the same synchronization structure 400 are respectively rotatably connected to the support structure 100, and the second sides of the two synchronization members 401 of the same synchronization structure 400 are respectively slidably connected to the third rotation member 230. In this embodiment, the two synchronization members 401 of the same synchronization structure 400 are symmetrically arranged relative to the second center line 102 of the support structure 100. Such a design can make the structures of the two synchronization members 401 of the same synchronization structure 400 the same, simplify the structure of the hinge, reduce the types of hinge components, and reduce the cost of the hinge.

[0136] In some embodiments, Figure 3 , Figure 4 , Figure 8 and Fig. 9 As shown, two slide grooves 233 are arranged on one side of the third rotating member 230 facing the second rotating shaft 620, and two synchronizers 401 of the same synchronizer structure 400 are respectively slidably mounted in the corresponding two slide grooves 233. As an example, the two slide grooves 233 are symmetrically arranged relative to the second center line 102.

[0137] As an example, Figure 4 , Figure 8 and Fig. 9 As shown, two groups of guide members are arranged on the back of the third rotating member 230, and each group of guide members includes two guide blocks 234 arranged along the first direction, and the two guide blocks 234 are each provided with a guide groove on the side facing each other, and the two guide blocks 234 and the two guide grooves together form a slide groove 233. In the two synchronizers 401 of the same synchronization structure 400, each synchronizer 401 is provided with a guide rib 410 at both ends along the first direction, and the two guide ribs 410 are parallel to each other and extend along the second direction. When each synchronizer 401 is slidably installed in a corresponding slide groove 233, the two guide ribs 410 slide in cooperation with the corresponding two guide grooves. With such a design, by matching the guide ribs and the guide grooves, the synchronizer 401 slides more stably in the corresponding slide groove 233, and the stability of the hinge when switching between the unfolded position and the folded position is improved.

[0138] On the basis of the above embodiment, the hinge further includes at least two transfer members 500 corresponding to at least two synchronization structures 400, and the transfer member 500 is located between the corresponding synchronization structure 400 and the rotation mechanism 200, and is rotationally connected to the corresponding synchronization structure 400 and the rotation mechanism 200. As an example, Figure 4 , Figure 8 and Fig. 9 As shown, the hinge includes two transfer members 500, which can be connecting rods. Each transfer member 500 is located between the corresponding synchronization structure 400 and the rotating mechanism 200, and is rotationally connected with the corresponding synchronization structure 400 and the rotating mechanism 200. With such a design, the transfer member 500 can pull the synchronization structure 400 to rotate synchronously with the rotating mechanism 200, and because the two sides of the transfer member 500 are rotationally connected with the synchronization structure 400 and the rotating mechanism 200 respectively, the transfer member 500 can adapt to the distance change between the rotating mechanism 200 and the synchronization structure 400, thereby improving the stability of the hinge when switching between the unfolded position and the folded position.

[0139] The first side of the transfer member 500 has a fifth connection portion, which is rotationally connected to the fourth connection portion of the first rotating member 210 and the third connection portion of the second rotating member 220; the second side of the transfer member 500 is rotationally connected to two synchronizers 401 of the same synchronization structure 400. As an example, the fifth connection portion includes at least two fifth lugs 510 disposed on the first side of the transfer member 500 and spaced apart along the first direction, each of the fifth lugs 510 is provided with a fifth through hole 511, and the fifth through holes 511 in the transfer member 500 are coaxially disposed. The transfer member 500 is rotatably connected to the first rotating member 210 and the second rotating member 220 respectively through the first rotating shaft 610 passing through each fifth through hole 511. In other words, the fifth lug 510 of the transfer member 500, the fourth lug 212 of the first rotating member 210 and the third lug 221 of the second rotating member 220 are interlocked, and the rotational connection is achieved through the first rotating shaft 610 passing through each fifth through hole 511, each fourth through hole 213 and each third through hole 223.

[0140] A fourth rotating shaft 630 is disposed on the second side of the transfer member 500, that is, the fourth rotating shaft 630 is disposed on the side of the transfer member 500 that is rotatably connected to the synchronization structure 400, and the two ends of the fourth rotating shaft 630 are respectively passed through the middle of the two synchronization members 401 of the same synchronization structure 400 to achieve rotational connection with the two synchronization members 401. Such a design can not only make the two synchronization members 401 of the same synchronization structure 400 rotate synchronously with the rotating mechanism 200, but also because the transfer member 500 is rotatably connected to the rotational connection between the first rotation member 210 and the second rotation member 220, the first rotating shaft 610 is shared with the first rotation member 210 and the second rotation member 220, thereby reducing the number of components in the hinge and simplifying the structure of the hinge.

[0141] In some embodiments, Figure 4 , Figure 8 , Fig. 9 and Fig.10 As shown, the two ends of the transfer member 500 along the first direction are respectively provided with first stop portions 520, the two ends of the second rotating member 220 are respectively provided with second stop portions 222, and the two ends of the third rotating member 230 are respectively provided with third stop portions (that is, the end of the guide block 234 facing the second rotating member 220). When the hinge is in the folded position, the first stop portion 520, the second stop portion 222 and the third stop portion are abutted in sequence, so that when the hinge is in the folded position, the centers of the first rotating shaft 610, the second rotating shaft 620 and the fourth rotating shaft 630 are on the same straight line, thereby preventing the second rotating member 220 from rotating and swinging relative to the primary component 210, and preventing the third rotating member 230 from rotating and swinging relative to the second rotating member 220, thereby improving the reliability of the drop test of the foldable electronic device using this hinge when it is in a closed state, thereby improving the service life of the foldable electronic device.

[0142] As an example, Figure 8 , Fig. 9 and Fig.10 As shown, the first stop portion 520 includes a first arcuate concave surface 521, and correspondingly, the second stop portion 222 includes a first arcuate convex surface 226, and the first arcuate convex surface 226 is located in the first arcuate concave surface 521. The second stop portion 222 is provided with a first inclined portion 227 on the side facing the third rotating member 230, and the third stop portion is provided with a second inclined portion 237 adapted to the first inclined portion. Among them, the first arcuate convex surface 226 and the first arcuate concave surface 521 have the same or similar shapes, and can be arc-shaped or approximately arc-shaped. When the hinge is in the folded position, the first inclined portion 227 and the second inclined portion 237 are in contact, and the centers of the first arcuate concave surface 521, the first arcuate convex surface 226, the first rotating shaft 610, the second rotating shaft 620 and the fourth rotating shaft 630 are on the same straight line.

[0143] In some embodiments, Figure 3 , Figure 4 , Fig.11 and Fig.12 The hinge further includes two gear sets 700, which are located at both ends of the support structure 100 along the first direction, and the two gear sets 700 are symmetrical with respect to the second center line 102. Each gear set 700 includes two meshing synchronous gears, and the two synchronous gears in the same gear set are symmetrically arranged with respect to the first center line 101. The two synchronous gears in the gear set 700 located at the upper end of the support structure 100 correspond to the two synchronous gears in the gear set 700 located at the lower end of the support structure 100, and are respectively located on two parallel axes, and the two axes are symmetrical with respect to the first center line 101.

[0144] The first side of each synchronization structure 400 is respectively rotatably connected with two synchronization gears located on the same side of the first center line, that is, the first sides of the two synchronization members 401 of each synchronization structure 400 are respectively rotatably connected with the two synchronization gears located on the same side of the first center line; the second side of each synchronization structure 400 is slidably connected with the third rotating member 230; the middle part of each synchronization structure 400 is respectively rotatably connected with the first rotating member 210 and the second rotating member 220 through the fourth rotating shaft 630. In this embodiment, by providing two mutually meshing synchronization gears, each synchronization structure 200 can maintain synchronous rotation.

[0145] The two synchronous gears in each gear set 700 are installed at one end of the support structure 100 , and the two synchronous gears can be rotatably connected to the support structure 100 via gear shafts respectively, so that the two synchronous gears can rotate synchronously relative to the support structure 100 .

[0146] In some embodiments, Figure 3 , Figure 4 , Fig.11 and Fig.12 , two tie rods 710 are respectively provided at both ends of the support structure 100, that is, a total of four tie rods 710 are provided on the support structure 100, specifically, two tie rods 710 are provided at the upper end of the support structure 100, and two tie rods 710 are also provided at the lower end of the support structure 100, and the tie rods 710 located at the upper and lower ends of the support structure 100 correspond to each other and are coaxial. As an example, the two tie rods 710 at the same end of the support structure 100 are symmetrical with respect to the first center line 101, and the two tie rods 710 located at the upper and lower ends of the support structure 100 are symmetrical with respect to the second center line 102.

[0147] A transmission part 430 is respectively provided on the first side of the two synchronous parts 401 of the same synchronous structure 400, and a mounting hole 431 is provided in the center of the two transmission parts 430. The two transmission parts 430 are respectively mounted on the two pull rods 710 located on the same side of the first center line 101 through their respective mounting holes 431, and can rotate around the corresponding pull rods 710; the second sides of the two synchronous parts 401 of the same synchronous structure 400 are slidably connected with the corresponding third rotating part 230.

[0148] Each tie rod 710 is mounted on the support structure 100, as an example, Figure 3 , Figure 5 and Fig.10 As shown, the upper and lower ends of the support structure 100 are each provided with two tie rod mounting holes 122, and the insertion ends of the two tie rods 710 are respectively installed in the corresponding two tie rod mounting holes 122 and fixed. In this example, each tie rod 710 is provided with an annular groove 711 in the area near its insertion end, and the cover plate 120 is provided with a limiting hole 121 in the area corresponding to the annular groove 711, and a clamping member 124 is installed in the limiting hole 121, which is respectively engaged with the annular groove 711 and the limiting hole 121. With such a design, the tie rod 710 can be quickly disassembled and assembled through the clamping member 124, thereby improving the maintainability of the hinge. In this example, the clamping member 124 is a U-shaped clamping member, and the distance between the two side walls of the U-shaped clamping member is less than the outer diameter of the tie rod 710 and greater than the groove bottom diameter of the annular groove 711, so that the clamping member 124 can clamp and fix the tie rod 710 in the support structure 100 to prevent the tie rod 710 from detaching from the support structure 100.

[0149] like Figure 3 , Figure 4 , Figure 8 , Fig. 9 , Fig.11 and Fig.12 On the basis of the above embodiment, the hinge further includes a damping adjustment mechanism 800, which includes a damping gear 810, a damping plate 820 and a damping spring 830. The damping gear 810, the damping plate 820 and the damping spring 830 are sleeved on the pull rod 710, the damping plate 820 is located between the damping gear 810 and the damping spring 830, and the two ends of the damping spring 830 are respectively in contact with the damping plate 820 and the pull rod 710; the damping gear 810 is meshed with the synchronous gear, and the first end of each damping gear 810 is engaged with the corresponding synchronous member 401, and the second end of each damping gear 810 is provided with a plurality of first convex teeth 812, and the plurality of first convex teeth 812 are arranged at intervals along the circumferential direction of the damping gear 810; and the damping plate 820 is provided with a plurality of second convex teeth 821 adapted to the plurality of first convex teeth 812 on one side facing the damping gear 812.

[0150] As an example, the hinge includes two damping adjustment mechanisms 800, which are located at both ends of the support structure 100, and each damping adjustment mechanism 800 includes two damping gears 810, a damping plate 820, and two damping springs 830. The damping gears 810 and the damping plate 820 are provided with through holes for the pull rod 710 to pass through, and the damping plate 820 is provided with two through holes, and the two through holes on the damping plate 820 are symmetrical with respect to the first center line 101, and the damping spring 830 can be a coil spring, and the middle of the coil spring has a through hole for the pull rod 710 to pass through. A damping gear 810 and a damping spring 830 are mounted on each pull rod 710, and the damping plate 820 is mounted on the two pull rods 710. The damping plate 820 is located between the damping gear 810 and the damping spring 830. The two ends of the damping spring 830 are respectively abutted against the damping plate 820 and the end cap 712 of the pull rod 710, so as to provide an elastic force to the damping plate 820 toward the support structure 100.

[0151] The two damping gears 810 are respectively meshed with the two synchronous gears, and the first end of each damping gear 810 is engaged with the corresponding synchronous member 401. For example, Figure 8 , Fig. 9 , Fig.11 and Fig.12 As shown, at least two notches 811 are provided at the first end of each damping gear 810, and at least two protrusions 432 are provided at the corresponding synchronizer 401; or, at least two protrusions are provided at the first end of each damping gear 810, and at least two notches are provided at the corresponding synchronizer 401. The at least two notches 811 and the at least two protrusions 432 are engaged with each other, so that the synchronizer 401 can rotate with the synchronizer gear or the synchronizer 401 drives the synchronizer gear to rotate.

[0152] The second end of each damping gear 810 is provided with a plurality of first convex teeth 812, and the plurality of first convex teeth 812 extend along the circumferential direction of the damping gear 810. The damping plate 820 is provided with a second convex tooth 821 adapted to the matching portion of the first convex tooth 812 on one side of the second end of the damping gear 810. The second convex tooth 821 can be meshed with the first convex tooth 812 by utilizing the elastic force provided by the damping spring 830. When the rotating mechanism 200 rotates, the two synchronous members 401 drive the damping gear 810 and the synchronous gear to rotate. When the damping gear 810 rotates, the first convex tooth 812 rotates relative to the second convex tooth 821, so that the damping gear 810 squeezes the damping plate 820, and the damping spring 830 is in a compressed state, thereby changing the friction between the second convex tooth 821 and the first convex tooth 812, that is, changing the damping force between the second convex tooth 821 and the first convex tooth 812, so that the hinge can stay at any position.

[0153] The damping gear 810 can be a complete gear or an incomplete gear. As an example, the damping gear 810 can be an incomplete gear, for example, it can be a quarter incomplete gear, that is, in the outer circumference of the damping gear 810, one quarter of the outer circumference is formed with gears, and the remaining three quarters of the outer circumference is a smooth surface.

[0154] Continue to refer Fig.11 and Fig.12 Each damping adjustment mechanism 800 further includes an end plate 850 and an auxiliary spring 840, wherein the end plate 850 is provided with a through hole for two tie rods 710 to pass through, and the two through holes of the end plate 850 are symmetrically arranged relative to the first center line 101, and the end plate 850 is sleeved on the two tie rods 710 through the two through holes, and the end plate 850 is located at the ends of the two tie rods 710 and abuts against the end caps 712 of the two tie rods 710. The two damping springs 830 are located between the damping plate 820 and the end plate 850, and abut against the damping plate 820 and the end plate 850 respectively.

[0155] A first stop pin 851 is provided on one side of the end plate 850 facing the damping plate 820, and a second stop pin 822 is provided on one side of the damping plate 820 facing the end plate 850. The first stop pin 851 is directly opposite to the second stop pin 822, or in other words, the first stop pin 851 is coaxially arranged with the second stop pin 822. The auxiliary spring 840 is located between the damping plate 820 and the end plate 850, and is sleeved on the first stop pin 851 and the second stop pin 822. The two ends of the auxiliary spring 840 are also respectively in contact with the damping plate 820 and the end plate 850. It can be understood that the auxiliary spring 840 can be the same as the damping spring 830 or different. For example, the auxiliary spring 840 is a coil spring with a greater compression force than the damping spring 830. By providing the auxiliary spring 840, the damping force between the damping plate 820 and the damping gear 810 can be flexibly adjusted, which is suitable for different users' requirements for different damping forces. In addition, the end plate 850 can fully utilize the elastic force of the damping spring 830 and the auxiliary spring 840, reduce the elastic force loss of the damping spring 830 and the auxiliary spring 840, and improve the utilization rate of the elastic force provided by the damping spring 830 and the auxiliary spring 840.

[0156] The embodiment of the present application also provides a foldable electronic device, which includes the hinge described in the above embodiments. Since the foldable electronic device includes the above hinge, the foldable electronic device also has the advantages of the above hinge, and the details can be referred to the above related description.

[0157] The foldable electronic device provided in the embodiment of the present application can be a foldable fixed terminal or mobile terminal such as a mobile phone, a tablet computer, a laptop computer, an ultra mobile personal computer (UMPC), a handheld computer, a touch TV, a walkie-talkie, a netbook, a personal digital assistant (PDA), a wearable device, a virtual reality device, etc.

[0158] Descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. mean that specific features, structures, steps or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, steps or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0159] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hinge, characterized in that: include: Support structure; At least two rotating mechanisms, two of the at least two rotating mechanisms being rotatably connected to opposite sides of the support structure; At least one elastic structure is configured to reduce the fit clearance at the connection between the support structure and the rotating mechanism and / or the fit clearance at the connection between adjacent rotating parts in the rotating mechanism.

2. The hinge according to claim 1, characterized in that: The adjacent rotating mechanisms located on the same side of the supporting structure are rotationally connected with each other, and the at least one elastic structure is at least arranged at: the connection between the adjacent rotating mechanisms located on the same side of the supporting structure, and the at least one elastic structure is constructed to reduce the fitting clearance at the connection between the adjacent rotating mechanisms located on the same side of the supporting structure.

3. The hinge according to claim 1, characterized in that: The rotating mechanism comprises at least two rotating members that are rotatably connected in sequence, and one of the at least two rotating members located on one side is rotatably connected to the supporting structure; The at least one elastic structure is arranged at a connection between the supporting structure and the rotating member, and / or, is arranged at a connection between adjacent rotating members in the rotating mechanism.

4. The hinge according to claim 3, characterized in that: The connection between the supporting structure and the rotating member and the connection between any two adjacent rotating members in the rotating mechanism are each provided with an elastic structure.

5. The hinge according to claim 3, characterized in that: The rotating mechanism comprises a first rotating member, a second rotating member and a third rotating member which are rotatably connected in sequence, and the first rotating member is rotatably connected to the supporting structure; The at least one elastic structure is disposed at at least one of the following connections: A connection between the first rotating member and the supporting structure; A connection between the first rotating member and the second rotating member; The connection between the second rotating member and the third rotating member.

6. The hinge according to claim 5, characterized in that: The first rotating member is rotatably connected to the second rotating member via a first rotating shaft, and the second rotating member is rotatably connected to the third rotating member via a second rotating shaft; The elastic structure is sleeved on the first rotating shaft and / or the second rotating shaft, and the elastic structure is used to reduce the radial fitting clearance between the second rotating member and the third rotating member and the second rotating shaft respectively, and / or the radial fitting clearance between the first rotating member and the second rotating member and the first rotating shaft respectively when the hinge is in the folded position.

7. The hinge according to claim 6, characterized in that: The elastic structure at least includes a torsion spring, which is sleeved on the second rotating shaft. The two ends of the torsion spring are respectively fixedly connected to the second rotating member and the third rotating member. The torsion spring is constructed to eliminate the radial matching clearance between the second rotating member and the third rotating member and the second rotating shaft when the hinge is in a folded position.

8. The hinge according to claim 7, characterized in that: The third rotating member has a first connection portion on a side close to the second rotating member, the second rotating member has a second connection portion on a side close to the third rotating member, and the third rotating member is rotatably connected to the second rotating member via the first connection portion, the second rotating shaft and the second connection portion.

9. The hinge according to claim 8, characterized in that The first connecting portion includes at least two first lugs disposed on a side of the third rotating member close to the second rotating member and spaced apart along a first direction, wherein a first through hole is disposed in the first lug; The second connecting portion comprises at least two second lugs which are arranged on a side of the second rotating member close to the third rotating member and are spaced apart along the first direction, and a second through hole is arranged in the second lug; The second rotating shaft is disposed in each of the first through holes and each of the second through holes, and can rotate relative to each of the first through holes and each of the second through holes.

10. The hinge according to claim 9, characterized in that Each of the first lugs is located between two adjacent second lugs, and / or each of the second lugs is located between two adjacent first lugs; One end of the torsion spring is located between two of the at least two first lugs at a middle position, and the other end of the torsion spring is located between two of the at least two second lugs at a middle position.

11. The hinge according to claim 9, characterized in that The third rotating member includes a main body and a pressure plate fixedly connected to each other, the main body has at least two first docking parts, the pressure plate has at least two second docking parts corresponding to the at least two first docking parts, and the first docking part and the second docking part are both provided with semicircular holes, and the first docking part and the second docking part are correspondingly docked to form the first lug.

12. The hinge according to claim 6, characterized in that The second rotating member has a third connecting portion on a side close to the first rotating member, the first rotating member has a fourth connecting portion on a side close to the second rotating member, and the second rotating member is rotatably connected to the first rotating member via the third connecting portion, the first rotating shaft and the fourth connecting portion.

13. The hinge according to claim 12, characterized in that The third connecting portion comprises at least two third lugs which are arranged on a side of the second rotating member close to the first rotating member and are spaced apart along the first direction, and a third through hole is arranged in the third lug; The fourth connecting portion comprises at least two fourth lugs which are arranged on a side of the first rotating member close to the second rotating member and are spaced apart along the first direction, and a fourth through hole is arranged in the fourth lug; The first rotating shaft passes through each of the third through holes and each of the fourth through holes, and can rotate relative to each of the third through holes and each of the fourth through holes.

14. The hinge according to claim 13, characterized in that Each of the third lugs is located between two adjacent fourth lugs, and / or each of the fourth lugs is located between two adjacent third lugs; Along the first direction, the fourth lugs and the third lugs are arranged alternately.

15. The hinge according to claim 1, characterized in that The rotating mechanism comprises a first rotating member rotatably connected to the supporting structure, and the elastic structure is arranged at the connection between the first rotating member and the supporting structure.

16. The hinge according to claim 1, characterized in that The rotating mechanism includes a first rotating member and a second rotating member, one side of the first rotating member is rotatably connected to the supporting structure, and the other side of the first rotating member is rotatably connected to the second rotating member, and the elastic structure is arranged at the connection between the first rotating member and the second rotating member, and / or at the connection between the first rotating member and the supporting structure.

17. The hinge according to any one of claims 1 to 16, characterized in that: The rotating mechanism comprises a first rotating member rotatably connected to the supporting structure, the first rotating member comprises an arc-shaped mounting portion, the supporting structure comprises a third rotating shaft, and the arc-shaped mounting portion is rotatably mounted on the outer peripheral surface of the third rotating shaft; The elastic structure is installed between the arc-shaped mounting portion and the third rotating shaft, one end of the elastic structure is fixedly connected to the supporting structure, and the other end of the elastic structure abuts against the outer peripheral surface of the arc-shaped mounting portion. The elastic structure is constructed to make the arc-shaped mounting portion abut against the outer peripheral surface of the third rotating shaft.

18. The hinge according to claim 17, characterized in that The support structure comprises a support plate and a cover plate which are arranged opposite to each other, the surface of the support plate facing the cover plate is provided with an arc-shaped protrusion which serves as the third rotating shaft, and the surface of the cover plate facing the support plate is provided with an arc-shaped groove, and the arc-shaped groove and the arc-shaped protrusion constitute an arc-shaped installation groove; The arc-shaped mounting portion is rotatably mounted in the arc-shaped mounting groove; The elastic structure is located in the arc-shaped mounting groove, and one end of the elastic structure is fixedly connected to the supporting structure, and the other end abuts against the outer peripheral surface of the arc-shaped mounting portion. The elastic structure is constructed so that the arc-shaped mounting portion abuts against the outer peripheral surface of the arc-shaped protrusion.

19. The hinge according to claim 18, characterized in that The elastic structure comprises an arc-shaped elastic arm, which is installed in the arc-shaped installation groove. One end of the arc-shaped elastic arm is fixedly connected to the supporting structure, and the other end abuts against the outer peripheral surface of the arc-shaped installation portion.

20. The hinge according to claim 17, characterized in that The matching surfaces of the arc-shaped mounting portion and the arc-shaped protrusion are provided with a plurality of spiral oil storage grooves.

21. The hinge according to any one of claims 1 to 16, characterized in that The hinge further comprises at least two synchronous structures corresponding to the at least two rotating mechanisms one by one, and the synchronous structure rotates synchronously with the corresponding one of the rotating mechanisms.

22. The hinge according to claim 21, characterized in that The rotating mechanism at least comprises a first rotating member, a second rotating member and a third rotating member, wherein the first rotating member is rotatably connected to the supporting structure, the first rotating member is rotatably connected to the second rotating member via a first rotating shaft, and the second rotating member is rotatably connected to the third rotating member via a second rotating shaft; The synchronous structure is slidably connected to the third rotating member in the corresponding rotating mechanism, and the synchronous structure is constructed so that when the rotating mechanism rotates relative to the supporting structure, the synchronous structure slides relative to the third rotating member.

23. The hinge according to claim 22, characterized in that The synchronization structure comprises two synchronization members, wherein the first sides of the two synchronization members of the same synchronization structure are respectively rotationally connected to the support structure, and the second sides of the two synchronization members of the same synchronization structure are respectively slidingly connected to the corresponding third rotation members.

24. The hinge according to claim 23, characterized in that The areas of the third rotating member corresponding to the two synchronous members of the same synchronous structure are each provided with a slide groove, and the second sides of the two synchronous members of the same synchronous structure are respectively slidably installed in the corresponding two slide grooves.

25. The hinge according to claim 23, characterized in that The hinge further comprises at least two transfer members corresponding one-to-one to the at least two synchronous structures, wherein the transfer members are located between the corresponding synchronous structures and the rotating mechanism and are rotationally connected to the corresponding synchronous structures and the rotating mechanism.

26. The hinge according to claim 25, characterized in that The first side of the intermediate transfer member has a fifth connection portion, and the fifth connection portion is rotatably connected to the fourth connection portion of the first rotating member and the third connection portion of the second rotating member; The second side of the transfer member is rotationally connected to the two synchronous members of the same synchronous structure.

27. The hinge according to claim 26, characterized in that The fifth connection portion includes at least two fifth lugs disposed on the first side of the transfer member and spaced apart along the first direction, wherein the fifth lugs are provided with fifth through holes, and the transfer member is rotatably connected to the first rotating member and the second rotating member respectively through the first rotating shafts penetrating through the fifth through holes; A fourth rotating shaft is disposed on the second side of the intermediate transfer member, and the fourth rotating shaft is rotationally connected to the two synchronous members of the same synchronous structure.

28. The hinge according to claim 27, characterized in that Along the first direction, the two ends of the intermediate transfer member are respectively provided with first stop parts, the two ends of the second rotating member are respectively provided with second stop parts, and the two ends of the third rotating member are respectively provided with third stop parts, and the first stop part, the second stop part and the third stop part are respectively constructed so that the centers of the first rotating shaft, the second rotating shaft and the fourth rotating shaft are on the same straight line when the hinge is in the folded position.

29. The hinge according to claim 28, characterized in that The first stop portion includes a first arcuate concave surface, and the second stop portion includes a first arcuate convex surface, and the first arcuate convex surface is located inside the first arcuate concave surface; The second stop portion also includes a first inclined portion away from the first arcuate concave surface, and the third stop portion includes a second inclined portion. When the hinge is in the folded position, the first inclined portion and the second inclined portion are in contact with each other, and the centers of the first arcuate concave surface, the first arcuate convex surface, the first rotating shaft, the second rotating shaft and the fourth rotating shaft are on the same straight line.

30. The hinge according to claim 25, characterized in that A gear set is disposed at each end of the support structure, each of the gear sets includes two meshing synchronous gears, the two synchronous gears of the two gear sets correspond to each other and are respectively located on two parallel axes, and the two axes are symmetrical with respect to the first center line of the support structure; The first sides of the two synchronized parts of the same synchronized structure are respectively rotatably connected to the two synchronized gears located on the same side of the first center line, and the second sides of the two synchronized parts of the same synchronized structure are slidably connected to the corresponding third rotating part; the two synchronized parts of the same synchronized structure are rotatably connected to the intermediate transfer part through a fourth rotating shaft.

31. The hinge according to claim 30, characterized in that Two pull rods are respectively arranged at two ends of the support structure, and the two pull rods are symmetrical with respect to the first center line of the support structure; The first sides of the two synchronizers of the same synchronizer structure are each provided with a transmission part, and the two transmission parts are sleeved on the two pull rods located on the same side of the first center line. The second sides of the two synchronizers of the same synchronizer structure are slidably connected to the corresponding third rotating part.

32. The hinge according to claim 31, characterized in that The pull rod is provided with an annular groove in an area near its insertion end, and the support structure is provided with a limiting hole in an area corresponding to the annular groove. A clamping piece is installed in the limiting hole and is respectively engaged with the annular groove and the limiting hole.

33. The hinge according to claim 32, characterized in that The clamping piece is a U-shaped clamping piece, and the distance between the two side walls of the U-shaped clamping piece is smaller than the outer diameter of the pull rod and larger than the groove bottom diameter of the annular clamping groove.

34. The hinge according to claim 31, characterized in that The hinge further comprises a damping adjustment mechanism, wherein the damping adjustment mechanism comprises a damping plate, a damping gear and a damping spring; The damping gear, the damping spring and the damping plate are sleeved on the pull rod, the damping plate is located between the damping gear and the damping spring, and two ends of the damping spring are respectively in contact with the damping plate and the pull rod; The damping gear is meshed with the synchronous gear, and the first end of each damping gear is engaged with the corresponding synchronous member, and the second end of each damping gear is provided with a plurality of first convex tooth portions, and the plurality of first convex tooth portions are arranged at intervals along the circumferential direction of the damping gear; the damping plate is provided with a plurality of second convex tooth portions adapted to the plurality of first convex tooth portions on one side facing the damping gear.

35. The hinge according to claim 34, characterized in that The first end of each damping gear is provided with at least two notches, and the synchronizer is provided with at least two protrusions, and the at least two notches are engaged with the at least two protrusions.

36. The hinge according to claim 35, characterized in that The damping adjustment mechanism further includes an end plate and an auxiliary spring, wherein the end plate is sleeved on the pull rod and the end plate abuts against the pull rod; The end plate is provided with a first limit pin, and the damping plate is provided with a second limit pin directly opposite to the first limit pin; the auxiliary spring is sleeved on the first limit pin and the second limit pin, and the two ends of the auxiliary spring are respectively in contact with the damping plate and the end plate.

37. A foldable electronic device, characterized in that: Comprising a hinge as claimed in any one of claims 1 to 36.

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