CN112399735A

CN112399735A - Folding device and electronic equipment

Info

Publication number: CN112399735A
Application number: CN202010595989.0A
Authority: CN
Inventors: 洪祝平; 苏帅; 刘文俊
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd; Royole Corp
Priority date: 2019-08-18
Filing date: 2020-06-24
Publication date: 2021-02-23
Also published as: WO2021031694A1

Abstract

The invention provides a folding device which comprises a bending mechanism and a shielding mechanism, wherein the bending mechanism comprises a middle hinge joint assembly and a connecting hinge joint arranged on the side part of the middle hinge joint assembly, and the shielding mechanism slides relative to the bending mechanism and at least partially covers the bending mechanism in the bending and flattening processes of the bending mechanism. The shielding mechanism is arranged on the bending inner side of the bending mechanism and is bent or unfolded along with the bending mechanism, so that impurities such as dust and the like are prevented from entering the folding device. The application also provides the electronic equipment provided with the folding device.

Description

Folding device and electronic equipment

Technical Field

The invention relates to the field of flexible piece supporting, in particular to a folding device for supporting a flexible piece and electronic equipment provided with the folding device.

Background

With the development of display devices, a bendable ultrathin electronic display screen, i.e., a flexible display screen, has appeared. Compared with the traditional display device, the flexible display screen has the advantages of being foldable, flexible and the like, and is widely favored by consumers. The existing flat plate type supporting structure obviously cannot meet the requirement, so the industry develops a supporting structure which can adapt to the bending requirement of the flexible display screen. The existing supporting structure which can meet the bending requirement is generally composed of a plurality of hinges, and adjacent hinges are hinged through mechanisms such as pin shafts and the like so as to rotate relatively. One side of the folding device in the prior art, which is far away from the flexible part, is not provided with a covering mechanism generally, and the dustproof requirement cannot be met.

Disclosure of Invention

The application provides a folding device with dustproof effect and be provided with folding device's electronic equipment.

The application provides a folding device, including the mechanism of can bending and shelter from the mechanism, the mechanism of can bending includes middle part hinge joint subassembly and locates the connection hinge joint of middle part hinge joint subassembly lateral part, the mechanism of can bending is buckling and flat in-process with the exhibition, it is relative to shelter from the mechanism of can bending slides and at least partial cover the mechanism of can bending.

The application further provides an electronic device, including flexible piece, casing and folding device, the casing includes first framework and second framework, folding device set up in first framework with between the second framework, the flexible piece set up in the casing reaches on the folding device, the flexible piece is followed folding device bends or the exhibition is flat.

The folding device of the electronic equipment comprises a bendable mechanism and a shielding mechanism, wherein the bendable mechanism slides relative to the bendable mechanism and at least partially covers the bendable mechanism in the bending and flattening processes. The shielding mechanism is arranged on the bending inner side of the bending mechanism and is bent or unfolded along with the bending mechanism, so that impurities such as dust and the like are prevented from entering the folding device from the bending inner side.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic perspective view of an electronic device in a first embodiment of the present application.

Fig. 2 is an exploded perspective view of the flexible member, the housing and the supporting sheet of the electronic device in fig. 1.

Fig. 3 is an enlarged schematic perspective view of a folding device of the electronic apparatus in fig. 2.

Fig. 4 is a partial perspective view of the folding device of fig. 3 from another perspective.

Fig. 5 is an exploded perspective view of a portion of the folding device of fig. 3.

Fig. 6 is a further exploded perspective view of the folding device of fig. 4.

Fig. 7 is an exploded perspective view of the central hinge assembly and two link assemblies of fig. 5.

Fig. 8 is an exploded perspective view of the central hinge assembly of fig. 7 from another perspective with two of the connecting assemblies.

Fig. 9 is an exploded perspective view of the first connecting hinge of fig. 5.

Fig. 10 is an exploded perspective view of the first joint of fig. 9 from another perspective.

Fig. 11 is an exploded perspective view of the second connecting hinge of fig. 5.

Fig. 12 is a perspective view from another perspective of the second joint of fig. 11.

Fig. 13 is an enlarged perspective view of one of the connection assemblies of fig. 7.

Fig. 14 is a perspective view of the linkage assembly of fig. 13 from another perspective.

Fig. 15 is an exploded perspective view of the connection assembly of fig. 13.

Fig. 16 is an exploded perspective view of the connection assembly of fig. 15.

Fig. 17 is an enlarged schematic perspective view of a positioning member of fig. 16.

Fig. 18 is an enlarged perspective view of the shutter mechanism on the folding device in fig. 5.

Fig. 19 is an exploded perspective view of the shutter mechanism of fig. 18.

FIG. 20 is a further exploded perspective view of the shield mechanism of FIG. 19.

Fig. 21 is a schematic view of an end structure of the folding device of fig. 3.

Fig. 22 is a front view of the folding device of fig. 3.

Fig. 23 is a sectional view taken along line XXIII-XXIII in fig. 22.

Fig. 24 is a sectional view taken along line XXIV-XXIV in fig. 22.

Fig. 25 is a sectional view taken along line XXV-XXV in fig. 22.

Fig. 26 is a sectional view taken along line XXVI-XXVI in fig. 22.

Fig. 27 is a perspective view of the electronic apparatus in fig. 1 in a bent state.

Fig. 28 is a perspective view of the folding device of the electronic apparatus according to the present application in a folded state.

Fig. 29 is a schematic view of a structure of one side of the folding device of fig. 28.

Fig. 30 is a schematic view of an end construction of the folding device of fig. 28.

FIG. 31 is a cross-sectional view taken along line XXXI-XXXI in FIG. 29.

FIG. 32 is a cross-sectional view taken along line XXXII-XXXII in FIG. 29.

FIG. 33 is a cross-sectional view taken along line XXXIII-XXXIII in FIG. 29.

FIG. 34 is a cross-sectional view taken along line XXXIV-XXXIV of FIG. 29.

Fig. 35 is an exploded perspective view of a flexible member, a housing, and a supporting sheet of an electronic device according to a second embodiment of the present disclosure.

Fig. 36 is a partially exploded perspective view of a folding device of the electronic apparatus of fig. 35.

Fig. 37 is a further exploded schematic view of the folding device of the electronic apparatus in fig. 36.

Fig. 38 is a perspective view of the folding device of fig. 37 from another perspective.

Fig. 39 is an enlarged perspective view of one of the connection assemblies of the folding device of fig. 37.

Fig. 40 is an enlarged perspective view of another linkage assembly of the folding device of fig. 37.

Fig. 41 is a sectional view of a folding device of an electronic apparatus in a folded state in a second embodiment of the present application.

Fig. 42 is a schematic perspective view of an electronic device in a third embodiment of the present application.

Fig. 43 is an exploded perspective view of the flexible member, the support member and the housing of the electronic device in fig. 42.

Fig. 44 is an exploded perspective view of the flexible member, the supporting member, the folding device and the housing from another perspective of the electronic device in fig. 42.

FIG. 45 is a cross-sectional view taken along line XLV-XLV of FIG. 42.

Figure 46 is an enlarged view of the XLVI portion of figure 45.

Fig. 47 is an enlarged schematic perspective view of the folding device in fig. 44.

Fig. 48 is a partially exploded schematic view of the perspective structure of the folding device of fig. 47.

Fig. 49 is a perspective view of fig. 48 from another perspective.

Fig. 50 is an exploded perspective view of the shutter mechanism of fig. 49.

Fig. 51 is a partially exploded perspective view of the anchor of fig. 50.

Fig. 52 is a perspective view of the shielding mechanism in fig. 50 from another angle.

Fig. 53 is an enlarged schematic view of the cover member and the elastic member of fig. 50.

Fig. 54 is a perspective view of another embodiment of the shielding mechanism.

FIG. 55 is an exploded perspective view of the bendable mechanism of FIG. 48.

Fig. 56 is an exploded perspective view of the central hinge assembly of fig. 55.

FIG. 57 is an exploded perspective view of the bendable mechanism of FIG. 49.

Fig. 58 is an exploded perspective view of the central hinge assembly of fig. 57.

FIG. 59 is an exploded perspective view of one of the folding assist assemblies of FIG. 55.

FIG. 60 is a perspective view of another perspective of the folding assist assembly of FIG. 59.

FIG. 61 is a sectional view taken along line LXI-LXI in FIG. 47.

Fig. 62 is a perspective view of one of the retainers of fig. 57.

FIG. 63 is a perspective view of the positioning member of FIG. 62 from another perspective.

FIG. 64 is a sectional view taken along line LXIV-LXIV in FIG. 47.

Fig. 65 is an enlarged view of the LXV portion in fig. 64.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

In addition, the following description of the various embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the application may be practiced. Directional phrases used in this application, such as, for example, "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the appended drawings and are, therefore, used herein for better and clearer illustration and understanding of the application and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the application.

In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed at … …" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1 to fig. 6, an electronic device 100 according to an embodiment of the invention includes a housing 20 and a flexible element 30 disposed on the housing 20. The flexible member 30 may be a flexible display screen, a flexible touch display screen, or other flexible components having corresponding functions, or a flexible component fixedly attached with a flexible support plate, such as a flexible display screen attached with a flexible steel plate, a flexible touch screen, or other flexible components. The housing 20 includes a first frame 21, a second frame 23, and a folding device 22 connected between the first frame 21 and the second frame 23. The front surface of the folding device 22 is attached with a support member 50, in this embodiment, the support member 50 is a bendable support sheet. The flexible member 30 is disposed on the supporting member 50 on the front surfaces of the first frame 21, the second frame 23, and the folding device 22. The flexible element 30 is provided with a bendable region 31 corresponding to the folding means 22 and two non-bendable regions 33 connected to opposite sides of the bendable region 31. The two non-bent regions 33 of the flexible material 30 may be fixed to the first frame 21 and the second frame 23, respectively. The folding device 22 is used to support the bendable region 31 of the flexible member 30, and the flexible member 30 is bent or flattened with the folding device 22. The folding device 22 comprises a bending mechanism 25, two connecting assemblies 24 and a shielding mechanism 29, wherein the two connecting assemblies 24 are arranged at two opposite ends of the bending mechanism 25. In the embodiment of the present application, the bendable mechanism 25 is a hinge. Optionally, the bending mechanism 25 may also be other mechanisms that can meet the bending requirement, such as a flexible belt, a spring, a soft rubber, a flexible steel plate, a rubber sheet, and the like. The bending mechanism 25 comprises a middle hinge joint component 250 and connecting hinge joints arranged at two opposite sides of the middle hinge joint component 250, and two opposite sides of the supporting piece 50 are respectively and fixedly connected with the connecting hinge joints at two opposite sides of the bending mechanism 25; each connecting assembly 24 comprises a falling limiting mechanism 26, a positioning piece 27 and a linkage mechanism 28; the fall restraint mechanism 26 includes a connecting member 260 connecting the middle hinge assembly 250 and the connecting hinge, and a first link member 263 connected between the connecting hinge and the connecting member 260. In this embodiment, the positioning member 27 includes a watch chain assembly. The connector 260 connects the central hinge member 250 to the connecting hinge and is slidable relative to the connecting hinge following bending or flattening of the bendable mechanism 25. The connecting assembly 24 includes a first limiting portion 2401, specifically, the first limiting portion 2401 is disposed on the positioning element 27, the first connecting rod 263 moves relative to the connecting member 260 and the middle hinge assembly 250 during the flattening process of the bendable mechanism 25, and when the bendable mechanism 25 is flattened, the first connecting rod 263 moves relative to the connecting hinge toward the first limiting portion 2401 until abutting against or adjacent to the first limiting portion 2401, so as to limit the connecting hinge. Alternatively, when the foldable mechanism 25 is unfolded, the first connecting rod 263 abuts or is adjacent to the first limiting portion 2401 to limit the foldable mechanism 25 from being bent in the opposite direction.

Optionally, when the bendable mechanism 25 is bent, the first connecting rod 263 abuts or is adjacent to the first limiting portion 2401 to limit the bendable mechanism 25 from being bent.

Alternatively, the central hinge member 250 of the collapsible mechanism 25 and the linkage 28 of the connector assembly 24 may together comprise the folding assembly. Optionally, the folding device 22 includes a folding assembly, an attachment hinge, a fall arrest mechanism 26, and a locator 27. The first limit portion 2401 is connected to the folding assembly. The link 260 is also connected to the folding assembly. Optionally, the connecting hinge is located at a side of the folding assembly and is slidable relative to the folding assembly. In addition to the central hinge assembly 250 and the linkage 28, the folding assembly may include other corresponding mating elements, such as a second shaft, screws, etc. Alternatively, the first limiting portion 2401 and the connecting member 260 may rotate around a common axis, or may rotate around two axes that are offset. Alternatively, the connectors 260 slide relative to the corresponding connecting hinges when the folding device 22 is unfolded. Optionally, when the folding device 22 is unfolded, the first link 263 moves towards the first position-limiting portion 2401 relative to the connecting hinge until abutting against or adjacent to the first position-limiting portion 2401, so as to limit the connecting hinge from moving towards the folding assembly relative to the folding assembly. Alternatively, when the folding device 22 is unfolded, the connecting member 260 slides relative to the connecting hinge to move the first connecting rod 263 relative to the connecting hinge. Alternatively, the connector 260 slides relative to the connecting hinge when the folding device 22 is bent. Optionally, the folding device 22 further comprises a second stopper 2402. Optionally, when the folding device 22 is bent, the first link 263 moves toward the second limiting portion 2402 relative to the connecting hinge until abutting against or adjacent to the second limiting portion 2402, so as to limit the connecting hinge from moving toward the folding assembly relative to the folding assembly. Alternatively, when the folding device is bent, the connecting member 260 slides relative to the connecting hinge to drive the first connecting rod 263 to move relative to the connecting hinge.

Preferably, two opposite sides of the middle hinge assembly 250 are respectively provided with a connecting hinge, a connecting member 260 is arranged between each connecting hinge and the middle hinge assembly 250, and a first connecting rod 263 is arranged between each connecting member 260 and the corresponding connecting hinge; when the bendable mechanism 25 is unfolded, each first connecting rod 263 abuts against or is adjacent to the corresponding first limiting portion 2401, and when the bendable mechanism 25 is bent, each first connecting rod 263 abuts against or is adjacent to the corresponding second limiting portion.

The shielding mechanism 29 is arranged at the inner side of the bending mechanism 25, the shielding mechanism 29 is connected between the middle hinge joint component 250 and the connecting hinge joint or the connecting piece 260, the connecting hinge joint can drive the shielding mechanism 29 to slide relative to the bending mechanism 25 during the bending process of the bending mechanism 25, and the shielding mechanism 29 always covers the inner side of the bending mechanism 25. Specifically, when the foldable mechanism 25 is folded, the shielding mechanism 29 rotates about the rotation shaft with respect to the middle hinge assembly 250.

In this embodiment, the connecting hinges include a first connecting hinge 255 movably disposed on one side of the central hinge assembly 250 and a second connecting hinge 258 movably disposed on an opposite side of the central hinge assembly 250. Each link assembly 24 is connected between the central hinge member 250 and the first and second connecting hinges 255 and 258. The connecting assembly 24 further includes a second limiting portion 2402, the first connecting rod 263 moves relative to the connecting member 260 and the connecting hinge during the bending process of the bending mechanism 25, and when the bending mechanism 25 bends, the first connecting rod 263 moves relative to the connecting hinge toward the second limiting portion 2402 until abutting against or adjacent to the second limiting portion 2402 to limit the connecting hinge. Specifically, the positioning member 27 is connected to the folding assembly, and the first limiting portion 2401 is disposed on the positioning member 27. Optionally, the positioning element 27 is further provided with a second limiting portion 2402. When the bending mechanism 22 is in the bending state, the first connecting rod 263 abuts against or is adjacent to the second limiting portion 2402 to limit the connecting hinge from moving toward the middle hinge assembly 25, and the first connecting rod 263 is separated from the first limiting portion 2401. When the foldable mechanism 22 is in the unfolded state, the first connecting rod 263 abuts against or is adjacent to the first limiting portion 2401 to limit the connecting hinge from moving toward the middle hinge assembly 25, and the first connecting rod 263 is separated from the second limiting portion 2402. Alternatively, the first stopper portion 2401 is inclined with respect to the bending axis of the bendable mechanism 22, and the second stopper portion 2402 is parallel with respect to the bending axis of the bendable mechanism 22. Optionally, the first stopper portion 2401 is inclined with respect to the second stopper portion 2402. Optionally, the first limiter portion 2401 is adjacent to or connected to the second limiter portion 2402. Alternatively, the first link member 263 has one end rotatably coupled to the link member 260 and the other end slidably and rotatably coupled to the connecting hinge. Alternatively, the first link member 263 has one end slidably and rotatably coupled to the link member 260 and the opposite end rotatably coupled to the connecting hinge. Alternatively, the first link member 263 includes two rotatably connected coupling pieces, one end of one coupling piece being rotatably connected to the coupling piece, the opposite end being rotatably connected to one end of the other coupling piece, and the opposite end of the other coupling piece being rotatably connected to the coupling hinge. Alternatively, the connecting member 260 slides outwardly relative to the connecting hinge when the bendable mechanism 25 is bent, and the end of the first link member 263 adjacent to the connecting member 260 slides outwardly relative to the connecting hinge. Alternatively, when the bendable mechanism 25 is bent, the other end of the first link 263 connecting the connecting hinge slides inward with respect to the middle hinge assembly 250 while sliding with respect to the connecting hinge. Alternatively, the first link 263 rotates when the bendable mechanism 25 bends. Alternatively, the retainer 27 slides outwardly relative to the connecting hinge when the bendable mechanism 25 is bent. Alternatively, the distance that the retainer 27 slides relative to the connecting joint during bending of the bendable mechanism 25 is less than the distance that the connector 260 slides relative to the connecting joint. Alternatively, the positioning member 27 and the connecting member 260 rotate about different axes when the bendable mechanism 25 is bent. Alternatively, the rotation axis of the positioning member 27 and the axis of the connecting member 260 are located at different layers. Optionally, the axis of the positioning member 27 is closer to the flexible member than the axis of the connecting member 260. Optionally, when the foldable mechanism 25 is bent to the bent state, the side of the first connecting rod 263 abuts against or is adjacent to the second limiting portion 2402. Alternatively, when the bendable mechanism 25 is deployed, the connector 260 slides inwardly relative to the connecting hinge and the end of the first link 263 adjacent the connector 260 slides inwardly relative to the connecting hinge. Alternatively, when the bendable mechanism 25 is deployed, the other end of the first link 263 connecting joint slides outward relative to the central joint assembly 250 while sliding relative to the connecting joint. Alternatively, the first link 263 is rotated in the reverse direction when the bendable mechanism 25 is unfolded. Alternatively, the retainer 27 slides outwardly relative to the connecting hinge when the foldable mechanism 25 is unfolded. Alternatively, the distance that retainer 27 slides relative to the connecting hinge during deployment of the foldable mechanism 25 is less than the distance that connector 260 slides relative to the connecting hinge. Optionally, when the foldable mechanism 25 is unfolded to the unfolded state of the preset angle, the side of the first connecting rod 263 abuts against or is adjacent to the first limiting portion 2401. Optionally, the deployed state and the bent state are relatively, the deployed state having a greater deployment angle than the bent state. Alternatively, the unfolded state may be a flattened state, and the folded state may be a folded state. Alternatively, the second limit portion 2402 may also be a positioning block formed on the connecting hinge joint, and the positioning block is disposed opposite to the end of the connecting member 260. When the bendable mechanism 25 is unfolded, the end of the connector 260 gradually approaches the locating block until abutting against or adjacent to the locating block, limiting the movement of the connecting hinge towards the middle hinge assembly 250, and acting as a fall limiter. Alternatively, the first limiting portion 2401 may also be a positioning block formed on the connecting member 260, and the positioning block is disposed opposite to a side surface of the first connecting rod 263. When the bending mechanism 25 bends, the side of the first link 263 gradually approaches the positioning block until abutting against or adjacent to the positioning block, so as to limit the movement of the connecting hinge toward the middle hinge assembly 250, thereby limiting the falling.

Alternatively, the term "adjacent" or "close" in the embodiments of the present application means that the distance between the two is less than a preset length, so that when the electronic device 100 is dropped or impacted from a side, the gap between the two, even if compressed, will not cause the flexible member 30 or the support member 50 to arch significantly, so that there is a risk that the flexible member 30 is damaged, the flexible member 30 is peeled off from the support member 50, and the support member 50 is peeled off from the folding device 22 (in some cases, a slight arch may be acceptable). Alternatively, the preset length may be any value between greater than 0 and less than or equal to 1cm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm … … 10mm, and the like. Alternatively, the preset length may be any value between greater than 0 and less than or equal to 0.8cm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm … … 8mm, and so on. Alternatively, the preset length may be any value between greater than 0 and less than or equal to 0.6cm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm … … 6mm, and the like. Alternatively, the preset length may be any value between greater than 0 and less than or equal to 0.5cm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm … … 5mm, and the like. Alternatively, the preset length may be any value between more than 0 and less than 3mm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm … … 3mm, and the like. Alternatively, the preset length may be any value between more than 0 and less than 1mm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm … … 1mm, and the like. Alternatively, the predetermined length may be any value between greater than 0 and less than 0.8mm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm … … 0.8.8 mm, and the like. Alternatively, the predetermined length may be any value between greater than 0 and less than 0.6mm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm … … 0.6.6 mm, and the like. Alternatively, the predetermined length may be any value between greater than 0 and less than 0.5mm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm … … 0.5.5 mm, and the like. Alternatively, the predetermined length may be any value between greater than 0 and less than 0.3mm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm … … 0.3.3 mm, and the like. Alternatively, the predetermined length may be any value between greater than 0 and less than 0.2mm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm … … 0.2.2 mm, and the like. Alternatively, the preset length may be any value between more than 0 and less than 0.1mm, such as 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.1mm, and the like.

It should be understood that the term "limiting the movement of the articulation hinge relative to the central hinge assembly 250/folding assembly toward the central hinge assembly 250/folding assembly 24" in the embodiments of the present application means limiting the travel of the articulation hinge relative to the central hinge assembly 250/folding assembly 24 toward the central hinge assembly 250/folding assembly 24, the travel being limited in relation to the length of the first limiting portion 2401/second limiting portion 2402 from the first link member 263 or the length of the third limiting portion 25553/fourth limiting portion 25554 from the second link member 267. When the first limiting portion 2401/the second limiting portion 2402 abuts against the first link 263 or the third limiting portion 25553/the fourth limiting portion 25554 abuts against the second link 267, the movable stroke of the connecting hinge relative to the middle hinge assembly 250/the folding assembly toward the middle hinge assembly 250/the folding assembly is 0; when the first/second limiting portions 2401/2402 are adjacent to the first link 263 or the third/fourth limiting portions 25553/25554 are adjacent to the second link 267, the distance that the connecting hinge can move relative to the middle hinge assembly 250/folding assembly 24 toward the middle hinge assembly 250/folding assembly 24 can refer to the value range defined in the aforementioned "adjacent" or "approaching" range. That is, the phrase "restricting the movement of the connecting hinge relative to the center hinge assembly 250/folding assembly 24 toward the center hinge assembly 250/folding assembly 24" does not mean completely restricting the movement of the connecting hinge relative to the center hinge assembly 250/folding assembly 24 toward the center hinge assembly 250/folding assembly 24 (i.e., the case where the movement stroke is 0), but the movable stroke within the above-mentioned numerical range of "adjacent" or "close" also falls within the range of "restricting the movement of the connecting hinge relative to the center hinge assembly 250/folding assembly 24 toward the center hinge assembly 250/folding assembly 24".

In this embodiment, the front surface refers to a surface facing the same direction as the light emitting surface of the flexible screen, and the back surface refers to a surface facing away from the light emitting surface of the flexible screen. The electronic device 100 is, for example, but not limited to, a mobile phone, a tablet computer, a display, a liquid crystal panel, an OLED panel, a television, a smart watch, a VR head-mounted display, a vehicle-mounted display, and any other products and components with display functions. "connected" in the description of the embodiments of the present invention includes both direct connection and indirect connection, for example, a connection of a and B includes a connection of a and B directly or through a third element C or more other elements. The connection also includes both the case of integral connection and the case of non-integral connection, the integral connection means that A and B are integrally formed and connected, and the non-integral connection means that A and B are non-integrally formed and connected. It is to be understood that unless limited by the use of modifiers, prefixes, suffixes, or the like, reference to "a connection" in accordance with an embodiment of the present invention is to be interpreted to include, but not limited to, a fixed connection, a rotating connection, a sliding connection, a pivotal connection, a threaded connection, a movable connection, an interference connection, a friction connection, a resilient connection, a rigid connection, an adhesive connection, and the like. It will be understood that embodiments of the invention referred to as "secured" are not limited to two elements being secured directly to one another, but may be secured by a third party element or elements. It will be understood that the terms "rotationally coupled," "slidably coupled," "rotatably coupled," "resiliently coupled," "rigidly coupled," "fixedly coupled," "movably coupled," "pivotally coupled," "threadably coupled," and the like, as used herein, are not intended to limit the two elements to direct connection, but rather may be used to connect the two elements together through a third element or through a greater number of other elements unless the two elements are directly connected as otherwise indicated.

The folding device 22 of the electronic device 100 of the present invention comprises a bending mechanism 25 and a falling-off limiting mechanism 26, wherein the falling-off limiting mechanism 26 comprises a connecting member 260 connecting a middle hinge joint component 250 and a connecting hinge joint, and a first connecting rod 263 connected between the connecting hinge joint and the connecting member 260, and the bending mechanism 25 can drive the connecting member 260 to move relative to the connecting hinge joint when bending; when the bending mechanism is unfolded and flat, the first connecting rod 263 moves towards the first limiting part 2401 relative to the connecting hinge joint until abutting against or being adjacent to the first limiting part 2401; when the bending mechanism 25 bends, the first connecting rod 263 moves toward the second limiting portion 2402 relative to the connecting hinge until abutting against or adjacent to the second limiting portion 2402. In this way, it is possible to prevent the connecting hinge from collapsing on the bending mechanism 25 when the electronic device 100 is dropped, so as to avoid the supporting member 50 fixedly connected to the connecting hinge from arching and damaging the flexible member 30. Moreover, the fall-limiting structure 26 of the present embodiment is directly integrated into the outermost hinge (i.e. the connecting hinge joint) of the bendable mechanism 25, and the internal structure of the hinge is used for fall-limiting without adding additional components, so that the space occupied by the bendable mechanism 25 can be saved, and the arrangement of other components of the electronic device 100 is facilitated.

In this embodiment, one end of the first link 263 is movably connected to the corresponding connecting member 260, and the other end of the first link 263 opposite to the corresponding connecting hinge is movably connected to the corresponding connecting hinge; specifically, one end of the first link 263 of each connecting element 24 close to the first connecting hinge 255 is movably connected to the corresponding connecting element 260, and the other end is movably connected to the first connecting hinge 255, and the first connecting hinge 255 rotates relative to the middle hinge assembly 250, so that the corresponding connecting element 260 moves relative to the first connecting hinge 255, and the first link 263 abuts against or is adjacent to the corresponding first limiting portion 2401, or the first link 263 abuts against or is adjacent to the second limiting portion 2402. One end of the first link 263 of each connecting member 24, which is close to the second connecting hinge 258, is movably connected to the corresponding connecting member 260, and the other end thereof is movably connected to the second connecting hinge 258, and the second connecting hinge 258 rotates relative to the middle hinge assembly 250, so that the corresponding connecting member 260 moves relative to the second connecting hinge 255, and the first link 263 abuts against or is adjacent to the corresponding first limiting portion 2401, or the first link 263 abuts against or is adjacent to the second limiting portion 2402.

The linkage mechanism 28 is connected between the falling limiting mechanisms 26 and the middle hinge joint assembly 250, namely the linkage mechanism 28 is connected between the two falling limiting mechanisms 26; when the connecting hinge joint on one side rotates, the connecting member 260 on the same side is driven to rotate, and the connecting member 260 drives the connecting member 260 on the other side to rotate through the linkage mechanism 28, and then drives the connecting hinge joint on the other side to rotate. Specifically, when the first connecting hinge 255 rotates, the connecting element 260 on the same side is driven to rotate, the connecting element 260 on the other side is driven to rotate by the link mechanism 28, and the connecting element 260 on the other side drives the second connecting hinge 258 to rotate; when the second connecting hinge 258 rotates, the connecting member 260 on the same side is driven to rotate, the connecting member 260 on the other side is driven by the connecting member 260 through the linkage mechanism to rotate, and the connecting member 260 on the other side drives the first connecting hinge 255 to rotate, so that the linkage of the bendable mechanism 25 is realized.

Preferably, articulation of the articulation joint relative to the central hinge assembly 250 includes rotation relative to the central hinge assembly 250 and sliding relative to the central hinge assembly 250, i.e., the articulation joint rotates relative to the central hinge assembly 250 while sliding relative to the central hinge assembly 250. Specifically, the first connecting hinge 255 slides relative to the middle hinge assembly 250 while rotating relative to the middle hinge assembly 250; the second connecting hinge 258 rotates relative to the central hinge assembly 250 while sliding relative to the central hinge assembly 250. Optionally, the connecting hinges slide relative to the central hinge assembly 250 toward the central hinge assembly 250 as the bendable mechanism 25 bends. Optionally, when the collapsible mechanism 25 is deployed, the connecting hinges slide relative to the central hinge assembly 250 away from the central hinge assembly 250.

Each connector 260 is connected between the central hinge member 250 and the corresponding connecting hinge and can slide relative to the connecting hinge following bending of the bending mechanism 25, the shielding mechanism 29 is arranged inside the bending of the bending mechanism 25, and the shielding mechanism 29 is connected between the central hinge member 250 and the connecting hinge or the connector 260. The folding mechanism 25 can slide relative to the folding mechanism 25 during folding of the shutter mechanism 29. A connector 260 connects the central hinge assembly 250 with the first and second connecting hinges 255, 258.

As shown in fig. 7 and 8, the central hinge assembly 250 includes a central hinge 251 and two swivel hinges 253 on opposite sides of the central hinge 251. The middle hinge 251 is strip-shaped and comprises a front surface with a circular arc-shaped cross section and a back surface 2510 facing back to the front surface, fixing grooves 2511 are respectively arranged at two opposite ends of the back surface 2510 of the middle hinge 251, and a connecting groove 2515 is arranged at the position, close to the middle part, of the back surface 2510. The middle hinge 251 is provided with two spaced-apart clearance holes 2512 at the bottom of each fixing groove 2511 and a fixing hole 2513 between the two clearance holes 2512. The opposite two sides in the connecting groove 2515 of the middle hinge joint 251 are respectively provided with a rotating part 2516, and the opposite two side walls of the middle hinge joint 251 are respectively provided with a notch 2517 communicated with each rotating part 2516; a fixing hole 2518 is formed at the bottom surface of the connection groove 2515 of the intermediate hinge 251. Two connecting holes 2519 are arranged on two opposite end faces of the middle hinge joint 251 at intervals, and the connecting holes 2519 on the two opposite ends of the middle hinge joint 251 are used for respectively connecting the corresponding connecting components 24.

A swivel joint 253 is strip-shaped and includes a front side with a circular arc-shaped cross section and a back side facing away from the front side. The middle hinge joint assembly 250 is provided with a reinforcement assembly. The reinforcing member is fixedly attached to the swivel joint 253 and is rotatably attached to the intermediate joint 251 and the movable joint 256. The reinforcing member includes a connecting portion 2530 protruded from a middle portion of a rear surface of the rotary hinge 253. The connecting portion 2530 includes a connecting shaft 2531 adjacent to one side of the intermediate hinge 251 and a hinge portion 2533 connecting the connecting shaft 2531, the connecting shaft 2531 extends in a direction parallel to the length direction of the rotating hinge 253, and the hinge portion 2533 is provided with a hinge hole 2534 in an axial direction parallel to the connecting shaft 2531. The hinge hole 2534 and the connecting shaft 2531 are respectively located at opposite ends of the hinge portion 2533. The two opposite ends of the rotary hinge 253 are respectively provided with a connecting end piece 2535 which is approximately waist-shaped, and the two opposite ends of each connecting end piece 2535 are respectively provided with a through hole 2536. A connecting post 2537 is provided on the back of the pivotal joint 253 between each connecting end piece 2535 and the connecting portion 2530.

The reinforcement assembly further includes a positioning plate 2504 and a locking member 2508 disposed on the middle hinge assembly 250, the positioning plate 2504 is substantially rectangular, a through hole 2505 is disposed in the middle of the positioning plate 2504, and notches 2506 are disposed at two opposite ends of the positioning plate 2504.

When the middle hinge assembly 250 is assembled, the connecting shafts 2531 of the two rotating hinges 253 are respectively accommodated in the two rotating parts 2516 of the middle hinge 251, and the two hinge parts 2533 are respectively accommodated in the two notches 2517 of the middle hinge 251; placing the positioning plate 2504 in the connecting groove 2515 of the middle hinge 251 so that the through hole 2505 of the positioning plate 2504 faces the fixing hole 2518 of the middle hinge 251 and the two notches 2506 face the hinge parts 2533 of the two rotary hinges 253 respectively; the fastener 2508 is then fastened to the fastening hole 2518 through the through hole 2505 so that the two rotating hinges 253 are rotatably connected to the intermediate hinge 251. The rotating hinge 253 and the middle hinge 251 are connected by the reinforcing component, so that the connection between the two is more stable.

As shown in fig. 9 and 10, the first connecting hinge 255 includes a bar-shaped first plate 2551 and two second plates 2553 disposed at opposite ends of the first plate 2551. Two sliding members 259 are attached to the first connecting hinge 255, each sliding member 259 being provided on the side of the first connecting hinge 255 facing away from the central hinge assembly 250. The central hinge assembly 250 also includes two movable hinges 256 slidably connected to the first and second connecting hinges 255 and 258, respectively. The movable hinge joint 256 is slidably connected to a side of the first connecting hinge joint 255 facing away from the two sliding members 259. The two opposite ends of the first plate 2511 are respectively provided with a connecting block 2552, and each connecting block 2552 is provided with a fixing hole and a convex block. One end of each second plate 2553 facing the first plate 25511 is provided with a positioning groove 2554 corresponding to the connection block 2552, an inner surface of the positioning groove 2554 is provided with a connection hole corresponding to the fixing hole of the connection block 2552 and a positioning hole corresponding to the protrusion, when the connection block 2552 is accommodated in the corresponding positioning groove 2554, the fixing hole of the connection block 2552 corresponds to the positioning hole, and the protrusion of the connection block 2552 is inserted into the corresponding positioning hole, so that the first plate 2551 is fixedly connected with the two second plates 2553. The end of each second plate 2553 facing away from the central hinge assembly 250 extends perpendicularly outwardly away from the first plate 2551 to form a lug 2555. Each second plate 2553 has a sliding piece 2556 protruding from an end of the first plate 2551 near the back, and the sliding piece 2556 extends in a direction parallel to the protrusion 2555.

The back surface of each lug 2555 is provided with a first slide guide groove 2557 along the extending direction thereof, and two opposite ends of the first slide guide groove 2557 respectively penetrate through the second plate 2553 and the lug 2555; a second sliding guide groove 2558 parallel to the first sliding guide groove 2557 is formed on a side surface of each second plate 2553 facing the middle hinge assembly 250 near the lug 2555, and the second sliding guide groove 2558 penetrates through the second plate 2553. Two spaced avoiding grooves are formed in the front surface of the second plate body 2553, a positioning hole 2559 is formed in the bottom surface of each avoiding groove, a positioning block 25590 is arranged in each positioning hole 2559, and each positioning block 25590 is used for fixedly connecting the back surface of the support member 50 and the second plate body 2553.

Specifically, the front surface of the lug 2555 is provided with the through slot 25551 penetrating through the first sliding guide slot 2557, so that the lug 2555 is provided with the stopper 25552 at the end of the through slot 25551 away from the second plate 2553. The bending mechanism 25 includes a third limiting part 25553 and a fourth limiting part 25554 disposed on the first connecting hinge 255, and the third limiting part 25553 and the fourth limiting part 25554 are both formed on the inner wall of the through groove 25551; specifically, a third limiting portion 25553 is disposed at an end adjacent to the second plate 2553, and the fall limiting mechanism 26 further includes a second link 267 (shown in fig. 3) connected between the connecting member 260 and the sliding member 259. The second link member 267 is substantially plate-shaped, and has one end rotatably connected to the connecting member 260 and the other end slidably and rotatably connected to the sliding member 259. Alternatively, one end of the second link 267 is slidably and rotatably connected to the connecting member 260, and the other end is rotatably connected to the sliding member 259. Alternatively, the second link member 267 may also be composed of two rotatably connected connecting pieces, wherein one end of one connecting piece is rotatably connected to the connecting member 260, the other end is rotatably connected to one end of the other connecting piece, and the other end of the other connecting piece is rotatably connected to the sliding member 259. The second link 267 is located between the stop strip 25552 and the third position-limiting portion 25553, the bendable mechanism 25 can drive the second link 26 to move relative to the sliding member 259 during the unfolding process, and when the bendable mechanism 25 is unfolded, the second link 267 moves toward the third position-limiting portion 25553 relative to the sliding member 259 until abutting against or being adjacent to the third position-limiting portion 25553 to limit the movement of the sliding member 259 relative to the bendable mechanism 25. In this embodiment, the third position-limiting portion 25553 is an inclined position-limiting surface disposed on the protrusion 2555, the fourth position-limiting portion 25554 is disposed on the protrusion 2555, specifically, the fourth position-limiting portion 25554 is a position-limiting surface adjacent to the third position-limiting portion 25553, the fourth position-limiting portion 25554 is parallel to the bending axis of the bendable mechanism 250, and the third position-limiting portion 25553 is inclined with respect to the bending axis of the bendable mechanism 250. The stopper surface of the third stopper 25553 is inclined with respect to the stopper surface of the fourth stopper 25554. Specifically, the third limiting portion 25553 is a side surface of an extending piece extending from the second plate body 2553 to the through groove 25551, the through groove 25551 is surrounded by a receiving groove at one side of the third limiting portion 25553, a limiting surface of the third limiting portion 25553 is disposed at an end of the extending piece away from the second plate body 2553, and a limiting surface of the fourth limiting portion 25554 is connected to a limiting surface of the third limiting portion 25553 and is parallel to the length direction of the second plate body 2553. The bendable mechanism 25 moves the second link member 267 relative to the connecting member 260 and the sliding member 259 during bending, and when the bendable mechanism 25 bends, the second link member 267 moves relative to the sliding member 259 toward the fourth position-limiting portion 25554 until abutting against or adjacent to the fourth position-limiting portion 25554. Alternatively, when the bendable mechanism 25 is bent, the connector 260 slides outwardly with respect to the first connecting hinge 255 and the slider 259 slides inwardly with respect to the first connecting hinge 255. Alternatively, the sliding distance of the connecting member 260 relative to the first connecting hinge 255 and the sliding distance of the sliding member 259 relative to the first connecting hinge 255 are related to the bending angle of the bendable mechanism 25. Alternatively, the sliding distance of the connecting member 260 with respect to the first connecting hinge 255 and the sliding distance of the sliding member 259 with respect to the first connecting hinge 255 are proportional to the bending angle of the bending mechanism 25. Alternatively, the sliding distance of the sliding member 259 relative to the first connecting hinge 255 during bending of the bending mechanism 25 is smaller than the sliding distance of the connecting member 260 relative to the first connecting hinge 255. Optionally, when the connecting member 260 slides relative to the first connecting hinge 255, the end of the second connecting rod 267 adjacent to the second connecting rod is driven to rotate, so that the second connecting rod gradually separates from the third limiting portion 25553; meanwhile, the other end of the second link 267, which is far from the link 260, slides and rotates relative to the first hinge joint 255, so that it gradually approaches the fourth stopper 25554. When the bending mechanism 25 is in the bending state, the other end of the second link 267 abuts against or is adjacent to the fourth position-limiting portion 25554. Similarly, when the foldable mechanism 25 is unfolded, the other end of the second link 267 slides and rotates relative to the first connecting hinge 255 and gradually separates from the fourth position-limiting part 25554; one end of the second link 267 rotates relative to the link 260 and gradually approaches the third stopper 25553. When the foldable mechanism 25 is in the unfolded state, one end of the second link 267 abuts against or is adjacent to the third position-limiting portion 25553.

In other embodiments, the fourth position-limiting portion 25554 can also be disposed on the sliding member 259, i.e. a protrusion is disposed in the sliding member, and the surface of the protrusion opposite to the end of the connecting member 260 is used as the fourth position-limiting portion, and when the bendable mechanism 25 is in the bent state, the end of the second connecting rod 267 is engaged with or adjacent to the fourth position-limiting portion.

The sliding member 259 is connected to the connecting hinge by an elastic member 25531; when the bending mechanism 250 bends, the sliding member 259 slides relative to the connecting hinge to compress the elastic member 25531. The sliding member 259 may be fixed to the first frame body 21 or the second frame body 23. Specifically, each of the second plates 2553 is provided with a resilient member 25531 on the side facing the sliding member 259 on the opposite side of the lug 2555, i.e., the resilient member 25531 is disposed between the sliding member 259 and the second plate 2553, so that the resilient member 25531 resiliently drives the sliding member 259. A pushing elastic member 25535 is arranged between the connecting hinge and the middle hinge assembly 250, and the pushing elastic member 25535 is used for driving the connecting hinge to be far away from the middle hinge assembly 250, that is, the pushing elastic member 25535 is elastically arranged between the first connecting hinge 255 and the middle hinge assembly 250; the pushing elastic member 25535 includes a compression spring and an end rod disposed at an end of the compression spring. Specifically, at least one receiving groove 25532 is disposed between the first sliding guide groove 2557 and the second sliding guide groove 2558 on the side of the second plate 2553 away from the lug 2555, and the at least one receiving groove 25532 is used for receiving the pushing elastic member 25535. Preferably, the pushing elastic member 25535 elastically abuts between the first connecting hinge 255 and the corresponding connecting member 260.

The back surface of each second plate 2553 is provided with a receiving groove 25536 communicating with the second sliding guide groove 2558, and the receiving groove 25536 is used for receiving the first link member 263. The second plate 2553 has a protruding shaft 25537 at the bottom of the receiving groove 25536, and the protruding shaft 25537 is movably connected to the first link member 263.

Each lug 2555 is slidably sleeved with a sliding member 259, and the through slot 25551 of each lug 2555 movably receives the second link member 267 therein. Specifically, the front surface of the sliding member 259 is provided with a guide slot 2591, and the lug 2555 can be slidably inserted into the guide slot 2591; the sliding member 259 is provided with a connecting post 2593 protruding towards the guiding slot 2591 corresponding to the through slot 25551 of the lug 2555, and the connecting post 2593 is provided with a connecting hole 2594 axially. The sliding member 259 is provided with positioning posts 2595 at two opposite sides of the sliding guide groove 2591, and when the sliding member 259 is sleeved on the lugs 2555, the positioning posts 2595 are clamped in the notches of the lugs 2555, so that the positioning of the sliding member 259 and the corresponding lugs 2555 in the pre-assembling process is realized, and the positioning posts are removed from the notches after the assembling process is finished.

The movable hinge 256 includes a bar-shaped connection plate 2561. The reinforcement assembly includes a plurality of connection rings 2563 disposed on a side of the connection plate 2561 facing away from the mounting frame 255. Specifically, two opposite ends of the connecting plate 2561 are respectively provided with a connecting ring 2563, the middle of the connecting plate 2561 is provided with two spaced connecting rings 2563, and a receiving groove is formed between the two connecting rings 2563 and is used for receiving the hinge portion 2533 of the rotary hinge 253, so that the hinge portion 2533 is sandwiched between the two connecting rings 2563. A pin shaft passes through the connection ring 2563 and the hinge holes of the hinge portion 2533 to rotatably connect the movable hinge 256 with the rotary hinge. The front face of the connection plate 2561 is provided with two spaced through holes 2566. The reinforcing component is connected in series with the movable hinge 256, the rotary hinge 253 and the middle hinge 251 at the same time, so that a better reinforcing effect is achieved, and the connection of the movable hinge 256, the rotary hinge 253 and the middle hinge 251 is more stable.

Referring to fig. 5, fig. 6, and fig. 9-fig. 10, when the first connecting hinge 255 is assembled, the connecting blocks 2552 at two opposite ends of the first plate 2551 are respectively clamped into the two second plates 2553, and clamped into the positioning holes by the bumps, and the locking members are locked in the fixing holes of the connecting blocks and the corresponding connecting holes; each sliding member 259 is sleeved on the corresponding lug 2555, and two elastic members 25531 are installed between the sliding member 259 and the corresponding second plate 2553; the two pushing elastic members 25535 are inserted into the receiving grooves 25532 of the two second plate bodies 2553, respectively. A movable hinge 256 connected to the rotary hinge is movably provided on the front surface of the first connecting hinge 255.

Referring to fig. 11 and 12, the second connecting hinge 258 has a similar structure to the first connecting hinge 255, except that the second connecting hinge 258 omits a first plate and a slider as compared to the first connecting hinge 255, as follows:

the second connecting hinge 258 includes a mounting frame body, two sliding members 259 are omitted, the mounting frame body includes two plate bodies 2583, one end of each plate body 2583 facing the other plate body 2583 is provided with a connecting plate 2584, the connecting plate 2584 is provided with a plurality of connecting holes, and the connecting plate 2584 is used for connecting the second frame body 23; the connecting plate 2584 of each plate 2583 is provided with a sliding piece 2586 protruding from a side of the plate 2583, and the sliding piece 2586 extends in a direction parallel to the connecting plate 2584. One end of the plate body 2583 facing the side surface of the middle hinge assembly 250 away from the sliding piece 2586 is provided with a first sliding guide groove 2587, and two opposite ends of the first sliding guide groove 2587 penetrate through the plate body 2583; one end of the plate body 2583 facing the side of the middle hinge assembly 250 near the connecting plate 2584 is provided with a second guide slot 2588, and the second guide slot 2588 penetrates through the plate body 2583. A receiving groove 2589 is formed between the first and second

slide guide grooves

2587 and 2588 on the side surface of the plate body 2583 facing the middle hinge assembly 250.

A pushing elastic member 2582 is arranged between each plate body 2583 and the connecting hinge of the middle hinge assembly 250, the pushing elastic member 2582 is used for driving the second connecting hinge 258 to be far away from the middle hinge assembly 250, namely, the pushing elastic member 2582 is elastically arranged between the second connecting hinge 258 and the middle hinge assembly 250; the abutting elastic piece 2582 comprises a compression spring and an end rod arranged at the end part of the compression spring; one end of the compression spring, remote from the end bar, is positioned within the receiving slot 2589. Preferably, the pushing elastic member 2582 elastically abuts between the second connecting hinge 258 and the corresponding connecting member 260.

The back of each plate 2583 is provided with a receiving groove 25832 communicating with the second slide guiding groove 2588, and the receiving groove 25832 is used for receiving the first link 263. The plate 2583 has a protruding shaft 25834 at the bottom of the receiving groove 25832, and the protruding shaft 25834 is movably connected to the first connecting rod 263. The second connecting hinge 258 is in a movable fit with the movable hinge 256.

Referring to fig. 13-16, in the present embodiment, each connecting assembly 24 includes a linkage 28, two fall-limiting mechanisms 26 disposed on opposite sides of the linkage 28, and a positioning member 27 disposed at an end of the linkage 28, the positioning member 27 being adapted to be connected to an end of the middle hinge assembly 25 to connect the connecting assembly 24 to the bendable mechanism 25. In this embodiment, the fall restraint mechanism 26 includes two connecting members 260, two first connecting members 263 and one second connecting member 267 on the left and right sides, that is, one first connecting member 263 and one second connecting member 267 are connected to the connecting member 260 on one side, and one first connecting member 263 is connected to the connecting member 260 on the other side. Specifically, the connecting member 260 includes a hinge portion 261, a first connecting portion 262 disposed at one end of the hinge portion 261 facing away from the side of the linkage mechanism 28, and a second connecting portion 264 disposed at the other end of the hinge portion 261 facing away from the side of the linkage mechanism 28; the hinge portion 261, the first connecting portion 262 and the second connecting portion 264 may be an integral structure, and the first connecting portion 262 and the second connecting portion 264 are spaced apart from each other. The side surface of the hinge part 261 departing from the first connecting part 262 is provided with a matching groove 2611, and the cross section of the matching groove 2611 is arc-shaped; one end of the inner surface of the fitting groove 2611 is provided with a connection sleeve 2613, and the connection sleeve 2613 is axially provided with a kidney-shaped connection hole 2615. The first connection portion 262 is a link extending in a direction perpendicular to the hinge portion 261, the second connection portion 264 is a link extending in a direction perpendicular to the hinge portion 261, and the extension length of the first connection portion 262 is smaller than that of the second connection portion 264. A positioning hole 2616 is disposed between the first connecting portion 262 and the second connecting portion 264 on a side of the hinge portion 261 facing away from the connecting sleeve 2613, and the positioning hole 2616 is used for positioning the abutting elastic member. A connecting column 2621 is disposed at an end of the back of the first connecting portion 262 away from the hinge portion 261, and the connecting column 2621 is movably connected to an end of the corresponding first connecting rod 263. An end of the second connecting portion 264 remote from the hinge portion 261 is provided with a connecting hole 2641, and the connecting hole 2641 is used for movably connecting the second link member 267.

The connecting member 260 has a positioning groove 2643, specifically, the back of the second connecting portion 264 has a positioning groove 2643 along the extending direction thereof, and an inner end wall of the positioning groove 2643 away from the hinge portion 261 has a positioning post 2644. The front surface of the second connecting portion 264 is provided with an accommodating groove 2640 along the extending direction thereof, the positioning groove 2643 and the accommodating groove 2640 are arranged in a staggered manner, the inner end wall of the accommodating groove 2640 far away from the hinge portion 261 is provided with two positioning columns 2642 at intervals, and a partition plate 2645 is arranged between the two positioning columns 2642 on the bottom surface of the accommodating groove 2640 to partition the accommodating groove 2640 into two spaces. The inner end wall of the receiving groove 2640 close to the hinge portion 261 is provided with two receiving holes 2646, and the two receiving holes 2646 are respectively communicated with the two spaces of the receiving groove 2640 and the fitting groove 2611. Each fall restraint mechanism 26 further includes a resilient positioning member 268 disposed between the connecting member 260 and the linkage 28, the resilient positioning member 268 being adapted to selectively snap between the connecting member 260 and the linkage 28 to position the bendable mechanism 25. Specifically, the elastic positioning element 268 includes a connecting block 2681, an elastic element 2683 disposed on one side of the connecting block 2681, and a positioning head 2685 disposed on one side of the connecting block 2681 away from the elastic element 2683; the elastic element 2683 is connected between the positioning head 2685 and the connecting element 260, and the positioning head 2685 is slidably abutted and positioned on the linkage mechanism 28; in this embodiment, each elastic positioning element 268 includes two elastic elements 2683 disposed on one side of the connecting block 2681 and two positioning heads 2685 disposed on one side of the connecting block 2681 away from the elastic elements 2683. One end of the two elastic elements 2683 away from the positioning head 2685 passes through the two accommodating holes 2646 respectively and is clamped to the two positioning posts 2642. The end surface of each positioning head 2685 facing away from the elastic element 2683 is spherical. The linkage 28 has at least a first positioning hole 2866 (as shown in fig. 15 or 16), and the elastic element 2683 is used to elastically push the positioning head 2685 to move toward the linkage 28, so that the positioning head 2685 is snapped into the first positioning hole 2866 to position the bendable mechanism 25 to maintain the flat state.

As shown in fig. 15, each of the first link members 263 is substantially a strip-shaped plate, two opposite end surfaces of the strip-shaped plate are arc surfaces, one end of the first link member 263 is provided with a strip-shaped hole 2631, and the other end of the first link member 263 is provided with a connecting hole 2633. The strip-shaped hole 2631 is movably connected to the connecting hinge or the connecting piece 261, and the connecting hole 2633 is rotatably connected to the connecting piece 261 or the connecting hinge; specifically, when the strip-shaped hole 2631 of the first link 263 is movably connected to the connecting member 261, the connecting hole 2633 of the first link 263 is rotatably connected to the corresponding connecting hinge, and when the strip-shaped hole 2631 of the first link 263 is movably connected to the corresponding connecting hinge, the connecting hole 2633 of the first link 263 is rotatably connected to the connecting member 261. The strip-shaped hole 2631 extends in the length direction of the first link 263. Preferably, a roller 2635 is disposed in the elongated hole 2631 of the first link 263, and the protruding

shafts

25537, 25834 of the connecting hinge or the connecting post 2621 of the connecting member 261 can be inserted into the roller 2635.

As shown in fig. 15, the second link 267 is substantially a strip-shaped plate, two opposite end surfaces of the strip-shaped plate are arc surfaces, one end of the second link 267 is provided with a strip-shaped hole 2671, and the other opposite end of the second link 267 is provided with a connecting hole 2673. The strip-shaped hole 2671 is adapted to be movably connected to the sliding member 259 or the connecting member 261, and the connecting hole 2673 is adapted to be rotatably connected to the connecting member 261 or the sliding member 259. The strip-shaped hole 2671 extends in the longitudinal direction of the second link member 267. Alternatively, the connection hole 2673 of the second link member 267 is aligned with the connection hole 2641 of the second connection portion 264, and the two are connected by a pin to rotatably connect the second link member 267 with the second connection portion 264. The strip-shaped hole 2671 of the second link member 267 is movably connected to the sliding member 259 via a pin, so that the second link member 267 is movably connected to the sliding member 259. Preferably, a roller (not shown) is also disposed in the strip-shaped hole 2671 of the second link 267, and the pin is inserted into the roller.

Alternatively, the term "movably connected" in the embodiments of the present application may include at least one of a rotatable connection and a sliding connection.

As shown in fig. 15 and 17, the linkage mechanism 28 includes two first shafts 281, a linkage element 282, two sets of fixed plate sets 283, a connecting frame 284, a fixed block 286, a connecting column 287 and an end plate 288, which are spaced apart from each other and parallel to each other, the two first shafts 281 are disposed on two opposite sides of the linkage element 282, and the two sets of fixed plate sets 283, the connecting frame 284 and the fixed block 286 are used for connecting the two first shafts 281 and the linkage element 282. The two first shafts 281 are solid shafts and are respectively connected to the two connecting members 260, the linking member 282 is connected between the two first shafts 281, one of the connecting members 260 rotates to drive the corresponding first shaft 281 to rotate, and the first shaft 281 drives the other first shaft 281 to rotate through the linking member 282, so that the other connecting member 260 also rotates. The two first axes 281 are symmetrical about a center line of the link 282.

Each first shaft 281 and the linkage element 282 are connected through a slider 2821 which is matched with the spiral guide slot 2811 through the spiral guide slot 2811, wherein one first shaft 281 rotates to enable the slider 2821 to slide in the corresponding spiral guide slot 2811, so that the linkage element 282 moves along a direction parallel to the axis of the first shaft 281 to drive the other first shaft 281 to rotate together.

The link 282 is a link block, the link 282 includes two opposite side surfaces 2822, the two side surfaces 2822 are provided with two opposite accommodating grooves 2823 along the axial direction of the first shaft 281, the cross section of each accommodating groove 2823 is arc-shaped, and the slide block 2821 is convexly disposed on the inner surface of the accommodating groove 2823. Preferably, the outer surface of each slide 2821 is a spherical surface. In this embodiment, the cross section of the inner surface of each receiving groove 2823 is semicircular, and the inner surface of each receiving groove 2823 of the link 282 is provided with at least one slider 2821 along the extending direction of the receiving groove 2823. In other embodiments, the inner surface of each receiving groove 2823 is provided with two or more sliders 2821 spaced apart from each other along the extending direction of the receiving groove 2823. A through hole 2825 is formed in the middle of the link 282 along the extending direction of the receiving groove 2823.

The outer peripheral walls of the two first shafts 281 are respectively and rotatably accommodated in the two accommodating grooves 2823, at least one spiral guide groove 2811 is formed in the outer peripheral wall of each first shaft 281, and when each first shaft 281 is accommodated in the corresponding accommodating groove 2823, the slider 2821 in the accommodating groove 2823 is slidably inserted into the spiral guide groove 2811. Preferably, the cross section of the inner surface of each spiral guide groove 2811 is semicircular, and the outer surface of the slider 2821 slidably fits the inner surface of the corresponding spiral guide groove 2811. Specifically, a rotary drum 2812 is fixedly sleeved in the middle of each first shaft 281, the rotary drum 2812 is a cylinder, and the spiral guide groove 2811 is formed in the outer peripheral wall of the rotary drum 2812. In this embodiment, a spiral guide slot 2811 is formed in the outer peripheral wall of the rotary drum 2812; in other embodiments, the outer circumferential wall of the drum 2812 is provided with two or more spiral guide slots 2811 spaced from each other. Preferably, the radius of the drums 2812 is equal to the radius of the receiving grooves 2823 so that the outer circumferential wall of each drum 2812 fits the inner circumferential wall of the corresponding receiving groove 2823. Opposite ends of the outer peripheral wall of the drum 2812 of each first shaft 281 are circumferentially provided with annular locking grooves 2814, respectively. Clamping groove 2814 is used for clamping fixed sheet group 283. The first end 2815 of each first shaft 281 is kidney-shaped in cross-section and the opposite second end 2816 is circular in cross-section. The first end 2815 of each first shaft 281 is configured to be connected to a corresponding connection element 260, such that the connection element 260 is fixedly connected to the first shaft 281.

Each fixed sheet group 283 comprises a clamping sheet 2831 and a fixed sheet 2835, two opposite ends of the clamping sheet 2831 are respectively provided with a clamping hook 2832, the middle part of the clamping sheet 2831 is provided with a clamping hole 2834, and each clamping hook 2832 can be inserted into a corresponding clamping groove 2814; the two opposite ends of the fixing plate 2835 are respectively provided with a shaft hole 2836, the middle part of the fixing plate 2835 is provided with a through hole 2837, and the fixing plate 2835 is provided with a connecting hole 2838 between each shaft hole 2836 and the through hole 2837. The connecting frame 284 comprises an abutting block 2841, a connecting block 2843 and a plurality of gaskets 2844 arranged between the abutting block 2841 and the connecting block 2843; the abutting block 2841 is a substantially strip-shaped block, the front surface of the abutting block 2841 is a circular arc surface, the abutting block 2841 includes two opposite side surfaces, the two side surfaces are provided with opposite accommodating grooves 28411 along the axial direction of the first shaft 281, and the middle portion of the abutting block 2841 is provided with a connecting hole 28413 along the axial direction of the first shaft 281. One side of connecting block 2843 is equipped with overlap joint piece 28431 along the axial of primary shaft 281, and the opposite side of connecting block 2843 is equipped with locating lever 28433 along the axial of primary shaft 281, and the opposite both ends of connecting block 2843 are equipped with shaft hole 28435 respectively, and connecting block 2843 is equipped with connecting hole 28436 between each shaft hole 28435 and overlap joint piece 28431. The plurality of spacers 2844 are mutually stacked, two opposite ends of each spacer 2844 are respectively provided with a shaft hole 28441, the middle part of each spacer 2844 is provided with a positioning hole 28443, the spacer 2844 is provided with a connecting hole 28445 between each shaft hole 28441 and the positioning hole 28443, and each connecting hole 28445 is communicated with the adjacent shaft hole 28441.

The fixing block 286 includes a front 2861, two opposite end faces and two opposite side faces 2862, a through hole 2863 is formed in the middle of the front 2861 of the fixing block 286, and a strap 2864 extends outwards from the middle of one side of the fixing block 286. Two side surfaces 2862 of the fixing block 286 are respectively provided with a connecting cylinder 2865, each connecting cylinder 2865 extends along the axial lead direction of the first shaft 281, and the peripheral wall of the connecting cylinder 2865 is provided with two first positioning holes 2866 at intervals and two sliding grooves 2867 corresponding to the two first positioning holes 2866. In the present embodiment, the connector barrel 2865 may be considered as the first component and the connector 260 may be considered as the second component. Optionally, the first component includes, but is not limited to, a connector barrel and the second component includes, but is not limited to, a connector. The runners 2867 extend circumferentially of the connector barrel 2865. The width of each runner 2867 is less than the diameter of the first locating hole 2866. The middle of the fixing block 286 is provided with a positioning groove 2868 along the axial line direction of the first shaft 281. The end plate 288 is provided with a positioning post 2881 and two positioning posts 2883 protruding toward one side of the fixing block 286 along the axial line direction of the first shaft 281, the positioning post 2881 is located between the two positioning posts 2883, the positioning post 2881 corresponds to the positioning slot 2868 of the fixing block 286, and the two positioning posts 2883 correspond to the inner cavities of the two connecting tubes 2865 of the fixing block 286.

Optionally, referring to fig. 61-64, the first positioning holes 2866 are spaced from the corresponding runners 2867, and the connecting tube 2865 forms a holding portion therebetween. The outer diameter of the connecting cylinder 2865 at the position of the abutting part is larger than the outer diameter at the first positioning hole 2866 and the sliding groove 2867. The first positioning hole 2866 is gradually reduced in diameter from the outside inward. Specifically, the diameter of the first positioning hole 2866 is gradually reduced from the side close to the elastic positioning member 268 to the side far from the elastic positioning member 268. Optionally, the first positioning hole 2866 is a through hole, and the inner diameter thereof is smaller than the outer diameter of the positioning head 2685 of the elastic positioning element 268. Optionally, the depth of the first locating hole 2866 is greater than the depth of the slide slot 2867. The resilient positioning member 268 can be snapped into the first positioning hole 2866 for providing force feedback when the folding device 22 is unfolded to the unfolded position (e.g., unfolded state). Optionally, the resilient retainer 268 may be captured within the first retaining hole 2866 for providing instant damping when the folding device 22 is folded from the unfolded position.

Alternatively, as the resilient positioning element 268 slides from the slot 2867 past the abutment, the resilient element 2683 of the resilient positioning element 268 is compressed to an increased extent due to the increased outer diameter of the connecting barrel 2865. When the elastic positioning element 268 slides into the first positioning hole 2866 from the abutting portion, the elastic element 2683 is released suddenly, so that the elastic positioning element 268 is clamped into the first positioning hole 2866. That is, when the folding device 22 is unfolded from the folded state to the unfolded state, the compression amount of the elastic positioning element 268 is increased and then decreased, the elastic potential energy stored in the elastic positioning element 268 reaches the maximum at the position of the abutting portion, and then is released into the first positioning hole 2866. Optionally, the connecting cylinder 2865 may not be provided with a holding portion, the first positioning hole 2866 is communicated with the sliding groove 2867, and since the compression amount of the elastic element 2683 at the sliding groove 2867 is greater than that at the first positioning hole 2866, a similar force feedback or instant damping effect may also be achieved.

Optionally, the depth of the sliding slot 2867 is gradually decreased in a direction toward the first positioning hole 2866, so that the stored elastic potential energy of the elastic positioning element 268 is gradually increased when sliding in the sliding slot 2867 toward the first positioning hole 2866, and reaches a maximum at the position of the holding portion. Optionally, when the folding device 22 is in the bent state, the elastic positioning element 268 is located at the first position in the sliding slot 2867; the end of the slide slot 2867 between the first position and the abutting portion is the second position. The depth of the first position is greatest, the depth of the second position is least, and the depth of the runner 2867 gradually decreases from the first position toward the second position. Thus, the amount of compression of the resilient positioning member 268 when the folding device 22 is in the folded state is minimized to relieve the resilient member 2683 from loading when in the folded state. Because the depth of the slide groove 2867 changes gradually continuously, the situation that the elastic positioning piece 268 is blocked in the sliding process and is bumped can be avoided.

In other embodiments, the linkage mechanism 28 further has at least a second positioning hole, and the elastic element 2683 elastically pushes the positioning head 2685 to move toward the linkage mechanism 28, so that the positioning head 2685 is snapped into the second positioning hole to position the bendable mechanism 25 to maintain the bent state. Specifically, the second positioning hole is disposed on the outer peripheral surface of the connecting tube 2865 away from the first positioning hole 2866, and when the bendable mechanism 25 is in the bent state, the positioning head 2685 of the elastic positioning element 268 is clamped into the second positioning hole, so that the bendable mechanism 25 maintains the bent state.

Each positioning member 27 includes two second members, two first members, and two second shafts 275. Optionally, the second element comprises a middle connection block 271 and the first element comprises an end connection block 273. The side surface of each middle connecting block 271, which is close to the other middle connecting block 271, is an arc surface 2711, one side of the middle connecting block 271, which is close to the arc surface 2711, is provided with a shaft hole 2712, and the axis of the arc surface 2711 is collinear with the axis of the shaft hole 2712. A matching groove 2714 is formed in the side surface, away from the other middle connecting block 271, of each middle connecting block 271, and the cross section of each matching groove 2714 is arc-shaped; the inner surface of the fitting groove 2714 is provided with a connection sleeve 2715, and the connection sleeve 2715 is axially provided with a shaft hole 2717. The rear surface of each middle connection block 271 is provided with a connection hole 2718 penetrating the front surface. Optionally, the positioning member 27 comprises an end connection block 273, or an end connection block 273 and a middle connection block 271. Each end connection block 273 is equipped with cooperation groove 2731 towards one side of middle part connection block 271, and the both ends that the internal surface of cooperation groove 2731 is relative are equipped with connecting cylinder 2733, and connecting cylinder 2733 axial is equipped with shaft hole 2735, encloses into holding mouth 2736 between two connecting cylinders 2733. The end connection block 273 is provided with a support plate 2737 on the side facing away from the connection cylinder 2733, said support plate 2737 being used to support the corresponding first link member 263. In this embodiment, each connecting assembly 24 includes two first limiting portions 2401, and each first limiting portion 2401 corresponds to the first connecting rod 263; when the first link 263 is adjacent to or attached to the first limit portion 2401, the first link 263 positions the bendable mechanism 25 to limit the falling. The first limiting portion 2401 is a first limiting surface facing the first link 263 and disposed on the end connecting block 273, the first link 263 includes a first positioning surface 2636 facing the first limiting surface, and when the first positioning surface 2636 is attached to the first limiting surface, the bendable mechanism 25 is in a flat state, and at this time, the first link 263 is inclined in the axial direction relative to the second shaft 275. Specifically, the first limiting surface is disposed at one end of each end connection block 273, which is close to the side surface of the support plate 2737, and is an inclined surface disposed at the side surface of the end connection block 273, and the inclined surface extends from the connection hinge to the middle hinge 250 and the connection member 260. The front face of each end connection block 273 is provided with a connection hole 2738 passing through the back face. The two second shafts 275 are arranged in parallel and spaced apart, and a connecting piece 2751 is provided at one end of the two second shafts 275 to keep the two second shafts 275 in parallel and spaced apart. Optionally, a second limit portion 2402 is also provided on the end connection block 273. The second stopper portion 2402 abuts the first stopper portion 2401. The second stopper portion 2402 is parallel to the axial direction of the second shaft 275. The second stopper portion 2402 is located closer to the outside of the end connection block 273 than the first stopper portion 2401. When the bending mechanism 25 is in the bending state, the second limiting portion 2402 is adjacent to or attached to the first positioning surface 2636 of the first link 263, and at this time, the first link 263 is parallel to the axial direction of the second shaft 275.

Alternatively, the connector 260 slides relative to the connecting hinge when the folding device 22 is bent. Alternatively, the retainer 27 may be bent and slid relative to the connecting hinge when the folding device 22 is bent. Alternatively, when the folding device 22 is bent, the end connection block 273 of the positioning member 27 rotates with respect to the middle connection block 271 and slides with respect to the connection hinge. Alternatively, the sliding distance of the retainer 27 relative to the joint when the folding device 22 is bent is smaller than the sliding distance of the link 260 relative to the joint.

When each connecting assembly 24 is assembled, the two first link members 263 are respectively mounted on the two connecting members 260, and specifically, the connecting posts 2621 of the two connecting members 260 are respectively rotatably inserted into the connecting holes 2633 of the two first link members 263; a second link member 267 is mounted on one of the connecting members 260, specifically, the second link member 267 is disposed on the second connecting portion 264 of the connecting member 260, the connecting hole 2673 of the second link member 267 faces the connecting hole 2641 of the second connecting portion 264, and the locking member passes through the connecting hole 2673 and is connected to the connecting hole 2641. One end of the elastic element 2683 of the two elastic positioning elements 268, which is away from the positioning head 2685, is inserted into the two receiving holes 2646 of each connecting element 260, and passes through the receiving holes 2646 to be clamped to the corresponding positioning posts 2642, and at this time, the end of each positioning head 2685, which is far away from the elastic element 2683, is exposed out of the inner circumferential surface of the fitting groove 2611. The rotary barrels 2812 of the two first shafts 281 are respectively accommodated in the two accommodating grooves 2823 of the linkage piece 282, and the slide blocks 2821 are respectively slidably accommodated in the corresponding spiral guide grooves 2811; hooks 2832 of clamping pieces 2831 of the two groups of fixed piece groups 283 are inserted into corresponding clamping grooves 2814, and at the moment, clamping holes 2834 of the two groups of clamping pieces 2831 are aligned with through holes 2825 of the linkage piece 282; the two fixing pieces 2835 are respectively sleeved at two opposite ends of the two first shafts 281, that is, the first end portions 2815 of the two first shafts 281 are respectively inserted into the two shaft holes 2836 of one fixing piece 2835, and the two second end portions 2816 are respectively inserted into the two shaft holes 2836 of the other fixing piece 2835 until the two fixing pieces 2835 respectively abut against two opposite ends of the rotary drum 2812, at this time, the through holes 2837 of the fixing pieces 2835 are opposite to the clamping holes 2834 of the clamping pieces 2831. Optionally, the clip 2831 may be provided with a through hole corresponding to the connection hole 2838 of the fixing piece 2835. The two connecting members 260 are respectively mounted on the two first shafts 281, specifically, the first end portions 2815 of the two first shafts 281 are respectively inserted into the connecting holes 2615 of the connecting sleeves 2613 of the two connecting members 260, and the outer peripheral surfaces of the two first shafts 281 are respectively attached to the inner peripheral surfaces of the matching grooves 2611 of the two connecting members 260, so that the first connecting rod member 263 is far away from the connecting sleeves 2613; the connecting frame 284 is mounted on the two first shafts 281, specifically, the abutting block 2841 is placed on the connecting sleeves 2613 of the two connecting pieces 260, that is, the two connecting sleeves 2613 can rotate relative to the abutting block 2841, at this time, the connecting hole 28413 of the abutting block 2841 faces the through hole 2837 of the fixing piece 2835, and the two accommodating grooves 28411 respectively face the connecting holes 2838 of the fixing piece 2835; the connecting post 287 is fixed to the connecting hole 28413 of the abutting block 2841 after passing through the through hole 2837 of the fixing piece 2835, the clamping hole 2834 of the clamping piece 2831, the through hole 2825 of the link piece 282, the clamping hole 2834 of the clamping piece 2831 and the through hole 2837 of the fixing piece 2835 in sequence. Sleeving a plurality of spacers 2844 on the first end parts 2815 of the two first shafts 281, that is, the first end parts 2815 of the two first shafts 281 are respectively inserted into the two shaft holes 28441 of the spacers 2844; sleeving the connecting block 2843 on the first end parts 2815 of the two first shafts 281, that is, the first end parts 2815 of the two first shafts 281 are respectively inserted into the two shaft holes 28435 of the connecting block 2843, and the positioning rods 28433 of the connecting block 2843 are inserted into the positioning holes 28443 of the spacers 2844; installing the positioning member 27 at one end of the linkage mechanism 28, specifically, inserting the connecting sleeves 2715 of the two middle connecting blocks 271 into the accommodating ports 2736 of the two end connecting blocks 273 respectively, so that the shaft hole 2717 of each connecting sleeve 2715 is opposite to the shaft hole 2735 of the corresponding end connecting block 273; the two pins are inserted into the shaft holes 2735 of the two end connection blocks 273 and the corresponding shaft holes 2717 of the middle connection block 271, so that the two end connection blocks 273 are rotatably connected to the two middle connection blocks 271. One ends of the two second shafts 275 far away from the connecting piece 2751 are respectively inserted into the shaft holes 2712 of the two middle connecting blocks 271, the connecting holes 28436 of the connecting blocks 2843, the connecting holes 28445 of the spacers 2844, the accommodating grooves 28411 of the abutting blocks 2841, the connecting holes 2838 of the fixing pieces 2835 and the through holes of the clamping pieces 2831. The fixing block 286 is sleeved on the two first shafts 281, that is, the second ends 2816 of the two first shafts 281 are respectively inserted into the inner cavities of the two connecting tubes 2865 of the fixing block 286, so that the overlapping tabs 2864 of the fixing block 286 are covered on the front surface of the sliding block 2821 and the front surfaces of the clamping tabs 2831 and the fixing tabs 2835. The end plate 288 is then installed at the end of the fixing block 286 away from the first shaft 281, that is, the

positioning posts

2881 and 2883 of the end plate 288 are respectively inserted into the positioning slots 2868 of the fixing block 286 and the inner cavities of the corresponding connecting tubes 2865, so that the end spherical surfaces of the two positioning heads 2685 of the elastic positioning element 268 of each connecting element 260 are respectively clamped into the corresponding first positioning holes 2866, and at this time, the connecting element 24 is in an expanded state.

When one of the connecting pieces 260 is rotated towards the other connecting piece 260, the one of the connecting pieces 260 drives the corresponding first shaft 281 to rotate, the rotation of the first shaft 281 causes the sliding block 2821 to slide in the spiral guide groove 2811 so as to drive the sliding block 2821 to slide along the connecting column 287, and the sliding block 2821 drives the other first shaft 281 to rotate, so that the linkage of the transmission piece 262 is realized.

The shielding mechanism 29 is arranged at the inner side of the bending mechanism 25, the shielding mechanism 29 is connected between the middle hinge assembly 250 and the connecting hinge or the connecting piece 264, and the connecting hinge can drive the shielding mechanism 29 to slide relative to the bending mechanism 29 in the bending process of the bending mechanism 25.

Referring to fig. 18-20, the shielding mechanism 29 includes two covering members 291 covering the back of the bending mechanism 25 and a hinge member 295 disposed between the two covering members 291, wherein one side of each covering member 291 near the middle hinge assembly 250 is hinged to the middle hinge assembly 250 along the rotation axis. Specifically, the two covers 291 can rotate relative to each other with the foldable mechanism 25 via the hinge 295 to achieve folding and unfolding of the two covers 291. Because the link mechanism 28 is arranged between the connecting member 260 and the middle hinge joint assembly 250, when the connecting hinge joint on one side rotates, the connecting member 260 on the same side is driven to rotate, and the connecting member 260 on the other side is driven to rotate by the link mechanism 28 and then drives the connecting hinge joint on the other side to rotate, so that the two covering parts 291 rotate synchronously. Each of the covers 291 includes a first cover 2911 covering the inner side of the bendable unit 25 and second covers 2913 provided at opposite ends of the first cover 2911, and the second covers 2913 cover the bent ends of the bendable unit 25. The first covering portion 2911 is a strip-shaped shielding sheet, and the second covering portion 2913 is a shielding sheet protruding from the end edge of the first covering portion 2911. Two fixing pieces 2912 are spaced apart from each other on the back surface of each of the first covering portions 2911, and one surface of each of the fixing pieces 2912 facing away from the first connection rod 263 is fixedly connected to the back surface of the first covering portion 2911. The side of the cover 291 remote from the connecting hinge joint is provided with a connecting sleeve 2916, and in particular, the side of each securing tab 2912 adjacent to the hinge 295 is provided with a connecting sleeve 2916.

Preferably, the covering member 291 and the corresponding connecting hinge joint are connected by matching a sliding chute and a sliding piece, the sliding chute extends along a direction perpendicular to the bending axis of the bendable mechanism 25, and the sliding piece slides in the sliding chute during the bending or flattening process of the bendable mechanism 25 so as to drive the covering member 291 to rotate along with the corresponding connecting hinge joint relative to the middle hinge joint assembly 250. Alternatively, the cover 291 may slide a greater distance relative to the connecting hinge than the cover 291 does relative to the connector 260 when the folding device 22 is bent. In this embodiment, the sliding guide groove is disposed on the cover 291, and the sliding piece is disposed on the connecting hinge. Specifically, the back surface of the first covering portion 2911 is provided with a sliding guide 2914 adjacent to each fixing piece 2912, the sliding guide 2914 extends in a direction perpendicular to the length direction of the first covering portion 2913, the side surface of each sliding guide 2914 facing away from the other sliding guide 2914 is provided with a sliding guide 2915 extending in the length direction of the sliding guide 2914, and the sliding guide 2915 penetrates through two opposite end surfaces of the sliding guide 2914.

The cover 291 has a protrusion 2910 received in the positioning slot 2643 of the corresponding connector 260, the positioning slot 2643 has an elastic member 292 disposed therein, when the cover 291 rotates relative to the middle hinge assembly 250, the protrusion 2910 slides in the positioning slot 2643 (see fig. 16), and the elastic member 292 elastically abuts against the protrusion 2910. Specifically, the first covering portion 2913 has two opposite ends fixed to the back surface of the first covering portion 2910, and each of the projections 2910 is slidably received in the positioning groove 2643 of the corresponding connector 260. The shielding mechanism 29 further includes four elastic members 292, and the four elastic members 292 respectively correspond to the bumps 2910 of the two covering members 291; each elastic element 292 is accommodated in the corresponding positioning slot 2643, and the bump 2910 abuts against the corresponding elastic element 292; when the cover 291 rotates relative to the central hinge assembly 250, the protrusions 2910 slide in the corresponding positioning slots 2643 and elastically press the elastic members 292 against the protrusions 2910, so that the cover 291 maintains a tightened state, and the elastic direction of the elastic members 292 is parallel to the sliding direction of the cover 291 relative to the bendable mechanism 25, so as to prevent the cover 291 from swinging back and forth along the sliding direction. In addition, the elastic element 292 abutting against the bump 2910 can also play a role in assisting in the sliding process of the covering element 291, so as to prevent the locking at a certain bending angle. Specifically, the elastic element 292 includes a compression spring 2921 and an abutting element 2923 disposed at one end of the compression spring 2921, the compression spring 2921 and the abutting element 2923 are accommodated in the corresponding positioning slot 2643, and the abutting element 2923 abuts against the corresponding protrusion 2910.

Alternatively, the positioning slot may be opened on the connecting hinge, and the elastic member 292 is elastically supported between the end of the positioning slot of the connecting hinge and the projection 2910 of the cover 291, which may also serve the same function. Preferably, the positioning slot 2643 is opened on the connecting member 260, and the elastic member 292 elastically abuts between the connecting member 260 and the bump 2910 of the cover 291. Because the sliding distance of the covering part 291 relative to the connecting part 260 is smaller than that of the covering part 291 relative to the connecting hinge joint during bending or unfolding, the elastic part 292 is arranged between the connecting part 260 and the covering part 291, which is beneficial to reducing the moving stroke of the spring during unfolding or bending, and avoids the phenomenon that the compression amount of the spring is too large to generate too large elastic force to influence the overall stability.

In other embodiments, the sliding guide slot may be disposed on the connecting hinge joint, and the sliding piece is correspondingly disposed on the covering part 291, specifically, the back surface of the first connecting hinge joint 255 is provided with the sliding guide slot along a direction perpendicular to the bending axis of the bendable mechanism 25, and the covering part 291 covering the back surface of the first connecting hinge joint 255 is provided with the sliding piece corresponding to the sliding guide slot; the back of the second connecting hinge 258 is provided with a guide chute along the direction vertical to the bending axis of the bendable mechanism 25, and the covering part 291 covering the back of the second connecting hinge 258 is provided with a slide sheet corresponding to the guide chute; when the bendable mechanism 25 is bent or unfolded, the sliding piece slides in the corresponding sliding guide slot to drive the covering piece 291 to rotate relative to the middle hinge assembly 250, and the covering piece 291 remains covering the bent inner side of the bendable mechanism 25.

Each hinge 295 includes a fastener 296 connected to the center hinge assembly 250 and a link 297 connected between the center hinge assembly 250 and the cover 291, the link 297 being connected to the center hinge assembly 250 by the fastener 296. Each link 297 is provided at opposite ends with a pivot shaft that is pivotally connected to the central hinge assembly 250 and a pivot shaft that is pivotally connected to the corresponding cover 291. Specifically, the fixing member 296 includes a fixing block 2961 for fixing in the fixing groove 2511 corresponding to the middle hinge assembly 250, and opposite ends of the fixing block 2961 are respectively provided with a protrusion 2962. The fixing member 296 is provided with a through hole 2963, a rotation shaft of one end of the link 297 is received in the fixing groove 2511 and rotatably inserted into the through hole 2963 of the fixing member 296, and a rotation shaft of the other end of the link 297 is rotatably inserted into the connection sleeve 2916. Specifically, two projections 2962 are arranged in a staggered manner, and a fixed block 296 is provided with a through hole 2963 at the end adjacent to each projection 2962 along the direction parallel to the rotation axis of the covering member 291; a through hole 2965 is formed between the two convex blocks 2962 of the fixed block 2961, and a clamping column is further arranged on the back of the fixed block 2961; the opposite ends of the link 297 are provided with respective pivot shafts, one of which is pivotally connected to the central hinge assembly 250 and the other of which is pivotally connected to the corresponding cover 291. Specifically, each of the links 297 includes a link 2971 and pivot shafts disposed at opposite ends of the link 2971, including a first pivot shaft 2972 disposed at one end of the link 2971 and a second pivot shaft 2974 movably coupled to the opposite end of the link 2971. One end of the connecting rod 2971, which is far away from the first rotating shaft 2972, is provided with a kidney-shaped or round hole 2973, and the second rotating shaft 2974 is inserted into the kidney-shaped or round hole 2973 and the corresponding switching hole 2963.

Optionally, the cover 291 slides relative to the connecting hinge when the folding device 22 is bent. Optionally, the cover 291 slides relative to the articulation hinge towards the articulation hinge as the folding device 22 is bent. At the same time, the link member also rotates toward the corresponding side following the cover member 291. A second cover portion 2913 of cover 291 is sandwiched between end plate 288 and central hinge assembly 250. The second cap portion 2913 partially overlaps with the end plate 288 and the connecting hinge. Alternatively, the overlapping area of the second cover 2913 and the end plate 288 is larger than the overlapping area of the second cover 2913 and the connecting hinge when the folding device 22 is in the unfolded state. Alternatively, when the folding device 22 is in the folded state, the overlapping area of the second covering portion 2913 and the end plate 288 is smaller than the overlapping area of the second covering portion 2913 and the connecting hinge. Alternatively, when the folding device 22 is bent, the overlapping area of the second covering portion 2913 with the end plate 288 is reduced, and the overlapping area of the second covering portion 2913 with the connecting hinge is increased. The end plate 288 has a semicircular shape, which covers the side of the folding device 22 together with the second covering portion 2913, preventing the internal components from being exposed. When the folding device 22 is folded, the second cover 2913 rotates with respect to the end plate 288, the second cover 2913 slides with respect to the end plate 288 and the connecting hinge, and the connecting hinge slides with respect to the end plate 288.

When the shielding mechanism 29 is assembled, the two cover parts 291 are arranged side by side at intervals, and the hinge 295 is connected between the two cover parts 291; specifically, the first rotating shafts 2972 of the two links 297 of each hinge 295 are rotatably inserted into the corresponding connecting sleeves 2916, respectively, such that the waist-shaped or circular holes 2973 of the two links 297 face the corresponding coupling holes 2963; two second rotating shafts 2974 are respectively coupled to the corresponding coupling holes 2963 through the kidney-shaped or circular holes 2973 of the two links 297 such that each link 297 is rotatably coupled between the fixing member 296 and the cover member 291. When the folding device 22 is in the folded state, the overlapping area of the second covering portion 2913 and the end plate 288 is larger than the overlapping area of the second covering portion 2913 and the connecting hinge; the overlapping area of the second cover portion 2913 and the end plate 288 is smaller than the overlapping area of the second cover portion 2913 and the connecting hinge when the folding device 22 is in the unfolded state.

Referring to fig. 3 to 26, when the folding device 22 is assembled, the two connecting members 24 are respectively placed at two opposite ends of the middle hinge 251, so that the two second shafts 275 of each connecting member 24 are respectively inserted into the two connecting holes 2519 of the middle hinge 251, the connecting end pieces 2535 at the same ends of the two rotating hinges 253 respectively abut against the end surfaces of the fixing blocks 286 departing from the middle hinge 251, and the adjacent through holes 2536 of the two connecting end pieces 2535 respectively face the inner cavities of the two connecting cylinders 2865 of the fixing block 28; the connecting hole 2537 of each rotary hinge 253 is respectively opposite to the connecting hole 2718 of the middle connecting block 271, and the locking piece passes through the connecting hole 2537 and is locked in the connecting hole 2718; the

positioning posts

2881 and 2883 of the two end plates 288 are inserted into the positioning slots 2868 of the fixing block 286 and into the inner cavities of the corresponding connecting tubes 2865 through the corresponding through holes 2536, respectively, so that the two connecting assemblies 24 are connected to the two opposite ends of the middle hinge assembly 250.

Placing the first connecting hinge 255 at one side of the middle hinge assembly 250, specifically, placing the first connecting hinge 255 at one side of the connecting member 260 having the second connecting rod member 267, so that the first connecting portion 262 is slidably inserted into the first connecting hinge 255 and connected to the first connecting rod member 263, and the second connecting portion 264 is slidably inserted into the first connecting hinge 255 and connected to the second connecting rod member 267, that is, the first connecting portion 262 and the second connecting portion 264 of the connecting member 260 at the same side are slidably inserted into the first guiding chute 2557 and the second guiding chute 2558 corresponding to the first connecting hinge 255, and meanwhile, the supporting plate 2737 at the same side is also inserted into the second guiding chute 2558, and two opposite ends of each pushing elastic member 25535 are respectively inserted into the corresponding receiving chute 25532 and the corresponding positioning hole 2616 of the connecting member 260; each first link 263 is accommodated in the corresponding accommodating groove 25536, the first link 263 is supported on the supporting plate 2737, and the strip-shaped hole 2631 of the first link 263 is slidably sleeved on the protruding shaft 25537; the connecting hole 2673 of the second link member 267 is rotatably sleeved on the connecting column 2593 of the corresponding sliding member 259; the connecting rings 2563 at the two opposite ends of the movable hinge joint 256 are respectively contacted with the connecting end pieces 2535 of the corresponding rotary hinge joint 253, so that the connecting rings 2563 are opposite to the through hole 2536 at one end far away from the middle hinge joint 251, and the connecting shafts are inserted into the inner cavity of the connecting rings 2563 and the through hole 2536; the hinge portion 2533 of the rotary hinge 253 is inserted into the accommodating groove between the two connecting rings 2563 at the middle part of the movable hinge 256, and the connecting shaft is inserted into the inner cavity of the connecting rings 2563 and the hinge hole 2534; the two through holes 2566 of the movable hinge joint 256 respectively face the connecting holes 2738 of the two positioning members 27, and the locking member passes through the through holes 2566 and is locked in the corresponding connecting holes 2738.

Placing the second connecting hinge 258 on the opposite side of the middle hinge assembly 250, specifically, placing the second connecting hinge 258 on the side of the connecting member 260 without the second connecting rod 267, so that the first connecting part 262 and the second connecting part 264 of the connecting member 260 on the same side can be slidably inserted into the first slide guiding groove 2587 and the second slide guiding groove 2588 corresponding to the second connecting hinge 258, and meanwhile, the supporting plate 2737 on the same side is also inserted into the second slide guiding groove 2588, and the opposite ends of each pushing elastic member 2582 are respectively inserted into the corresponding receiving groove 2589 and the positioning hole 2616 of the corresponding connecting member 260; each first link 263 is accommodated in the corresponding second sliding guide slot 2588, the first link 263 is supported on the supporting plate 2737, and the strip-shaped hole 2631 of the first link 263 is slidably sleeved on the protruding shaft 25834; the connecting rings 2563 at the two opposite ends of the movable hinge joint 256 are respectively contacted with the connecting end pieces 2535 of the corresponding rotary hinge joint 253, so that the connecting rings 2563 are opposite to the through hole 2536 at one end far away from the middle hinge joint 251, and the connecting shafts are inserted into the inner cavity of the connecting rings 2563 and the through hole 2536; the hinge portion 2533 of the rotary hinge 253 is inserted into the accommodating groove between the two connecting rings 2563 at the middle part of the movable hinge 256, and the connecting shaft is inserted into the inner cavity of the connecting rings 2563 and the hinge hole 2534; the two through holes 2566 of the movable hinge joint 256 respectively face the connecting holes 2738 of the two positioning members 27, and the locking member passes through the through holes 2566 and is locked in the corresponding connecting holes 2738.

Covering the shielding mechanism 29 on the back of the middle hinge assembly 250, so that the two sliding pieces 2556 of the first connecting hinge 255 are slidably inserted into the sliding guide grooves 2915 of the two sliding guide bars 2914 of the corresponding covering part 291, and the two sliding pieces 2586 of the second connecting hinge 258 are slidably inserted into the sliding guide grooves 2915 of the two sliding guide bars 2914 of the corresponding covering part 291; the two fixing pieces 296 of the shielding mechanism 29 are respectively accommodated in the two fixing grooves 2511 of the middle hinge 251, so that the two protrusions 2962 are respectively accommodated in the corresponding avoiding holes 2512, the through hole 2965 of each fixing piece 296 is opposite to the fixing hole 2513, and the locking piece passes through the through hole 2965 and is locked in the fixing hole 2513; each elastic member 292 is accommodated in the corresponding positioning slot 2643, so that one end of the compression spring 2921 away from the abutting member 2923 is sleeved on the positioning column 2644, and the protrusion 2910 of the covering member 291 is inserted into the corresponding positioning slot 2643 and abuts against the corresponding abutting member 2923. At this time, the shielding mechanism 29 stably covers the back surface of the foldable mechanism 25 to prevent foreign substances such as dust from entering the folding device 22 from the back surface. Connecting the supporting member 50 to the front surface of the folding device 22, specifically, the back surface of the supporting member 50 is fixedly connected to the front surface of the first connecting hinge 255 and the front surface of the second connecting hinge 258, in this embodiment, one side of the back surface of the supporting member 50 is fixedly connected to the front surface of the positioning block 25590 of the first connecting hinge 255, and the other side of the back surface of the supporting member 50 opposite to the front surface is fixedly connected to the front surface of the second connecting hinge 258; the support member 50 bends or flattens with the folding device 22.

Alternatively, the second connecting hinge 258 is fixed to the second frame body 23, and the sliding member 259 is fixed to the first frame body 21. Opposite sides of the flexible material 30 are fixed to the first frame 21 and the second frame 23, respectively.

Alternatively, the length of the support member 50 may be increased, with one side remaining fixed to the first connecting hinge 255 and the other side being fixed to the second frame 23.

Alternatively, when the electronic device 100 is bent, the first connecting hinge 255 and the second connecting hinge 258 both slide toward the middle hinge assembly 250 with respect to the middle hinge assembly 250, and the sliding member 259 slides toward the middle hinge assembly 250 with respect to the middle hinge assembly 250. Optionally, when the electronic device 100 is bent, the first connecting hinge 255 and the second connecting hinge 258 both slide toward the movable hinge 256 of the middle hinge assembly 250 with respect to the middle hinge assembly 250. Alternatively, when the electronic apparatus 100 is bent, the sliding member 259 slides with respect to the first connecting hinge 255. Alternatively, when the electronic device 100 is bent, the sliding member 259 slides toward the middle hinge assembly 250 with respect to the first connection hinge 255.

Optionally, the slidable movement of the first and second connecting hinges 255, 258 relative to the central hinge assembly 250 acts to reduce the tensile force experienced by the support 50 during bending. Because the first connecting hinge 255 and the second connecting hinge 258 can slide relative to the middle hinge assembly 250, a first-level falling limit structure is arranged on the first connecting hinge 255 and the second connecting hinge 258, so that the situation that the support 50 is arched due to the fact that the first connecting hinge 255 or the second connecting hinge 258 slides when being impacted in a falling process is reduced or prevented.

Optionally, the sliding member 259 is slidable relative to the first connection hinge 255 to reduce the tensile force experienced by the flexible member 30 during bending. Because the sliding member 259 is slidable relative to the first connecting hinge 255, a second level of fall restraint is provided for the sliding member 259 to reduce or prevent the sliding member 259 from sliding under impact during a fall, thereby causing the flexible member 30 to arch.

Optionally, the slide 259 slides relative to the first connecting hinge 255 a distance less than the distance that the first connecting hinge 255 slides relative to the central hinge assembly 250. Optionally, the slide 259 slides relative to the first connecting hinge 255 a distance less than the distance that the first connecting hinge 255 slides relative to the movable hinge 256 of the central hinge assembly 250.

By arranging the first-stage falling limiting structure inside the folding device 22, the first-stage falling limiting structure can be prevented from occupying the inner space of the first frame body 21 and the second frame body 23, and device arrangement in the first frame body 21 and the second frame body 23 is facilitated.

Preferably, the connecting member 24 connects the central hinge member 250 with the first connecting hinge 255 and the second connecting hinge 258 for moving the first connecting hinge 255 and the second connecting hinge 258 relative to the central hinge member 250; that is, a first end of coupler assembly 24 is pivotally connected to central hinge assembly 250 and a second end of coupler assembly 24 is slidably connected to either first connecting hinge 255 or second connecting hinge 258. Specifically, one end of the link 260 at one side of each link assembly 24 is rotatably connected to the middle hinge assembly 250, and the other end of the link 260 is slidably connected to the first connecting hinge 255; the other side of each connector assembly 24 has one end of a connector 260 pivotally connected to the central hinge member 250 and the other end of the connector 260 slidably connected to the second connecting hinge 258.

Referring to fig. 27-34, when the folding device 22 is bent, the first connecting hinge 255 is rotated toward the second connecting hinge 258, the first connecting portion 262 and the second connecting portion 264 of the two connecting members 260 slide in the second guiding slot 2558 and the first guiding slot 2557 of the first connecting hinge 255 respectively, each first connecting portion 262 slidably pushes the corresponding first connecting rod 263 to rotate toward a side away from the middle hinge assembly 250, so that one end of the first connecting rod 263 rotates along the corresponding connecting column 2621, and the strip-shaped hole 2631 at the other end slides and rotates along the corresponding protruding shaft 25537; each second connecting portion 264 slidably drives the corresponding second connecting rod 267 to rotate towards a side away from the middle hinge assembly 250, such that one end of the second connecting rod 267 rotates along the corresponding connecting hole 2641, and the strip-shaped hole 2671 at the other end slides and rotates along the corresponding connecting post 2593 of the sliding member 259. The elastic positioning element 268 is elastically deformed to disengage the positioning head 2685 from the corresponding first positioning hole 2866. The urging elastic member 25535 elastically abuts between the middle hinge member 250 and the first connecting hinge 255. The first connecting portion 262 and the end connecting portion 273 slide in the second guiding slot 2558 of the first connecting hinge 255, the second connecting portion 264 slides in the first guiding slot 2557 of the first connecting hinge 255, and since the two connecting portions 260 of each connecting assembly 24 are connected by the linking mechanism 28, when the connecting portion 260 connected between the first connecting hinge 255 and the linking mechanism 28 rotates, the corresponding first shaft 281 can be driven to rotate, the first shaft 281 drives the first shaft 281 on the other side to rotate through the linking mechanism 282, the first shaft 281 on the other side rotates to drive the connecting portion 260 connected between the second connecting hinge 258 and the linking mechanism 28 to rotate, so that the second connecting hinge 258 synchronously rotates towards the first connecting hinge 255, the second connecting hinge 258 drives the first connecting portion 262 and the second connecting portion 264 to slide in the second guiding slot 2588 and the first guiding slot 2587, and the first connecting portion 262 slidably drives the corresponding first connecting rod portion 263 to move away from the middle connecting hinge assembly 250 The first connecting rod 263 is laterally rotated to separate from the first limiting portion 2401 and move until the first connecting rod 263 is attached to the second limiting portion; the positioning head 2685 of the elastic positioning element 268 slides along the corresponding sliding slot 2867 until sliding to the end of the sliding slot 2867 far away from the first positioning hole 2866; the two links 260 of each linkage assembly 24 are brought together to effect the coordinated bending of the folding device 22. The elastic member 25535 is kept in the elastic pushing state during the bending of the folding device 22.

In the bending process, the first connection portion 262 of the connection member 260 drives the first end of the first connection member 263 to rotate relative to the first connection portion 262, and the second end of the first connection member 263 slides and rotates relative to the protruding shaft 25537 of the first connection hinge 255, so that the first connection member 263 is away from the first limiting portion 2401 until the first connection member 263 abuts against the second limiting portion; meanwhile, the second connecting portion 264 drives the first end of the second link 267 to rotate relative to the second connecting portion 264, and the second end of the second link 267 slides and rotates relative to the connecting pole 2593 of the sliding member 259, so that the second link 267 is far away from the third limiting portion 25553 until the second link 267 abuts against the fourth limiting portion. The first connecting hinge 255 rotates relative to the middle hinge assembly 250 about the first axis 281, in particular, the first connecting hinge 255 rotates relative to the middle hinge assembly 250 about the first axis 281 and the first connecting hinge 255 slides relative to the middle hinge assembly 250, the movable hinge 256 rotates with the positioning member 27 along the corresponding second axis 275 and the movable hinge 256 slides relative to the mounting frame 255; the second connecting hinge 258 rotates about another first axis 281 relative to the central hinge assembly 250, and the second connecting hinge 258 slides relative to the central hinge assembly 250, the corresponding movable hinge 256 rotates with the positioning member 27 along the corresponding second axis 275, and the movable hinge 256 slides relative to the mounting frame; the rotation of the two movable hinges 256 respectively drives the two rotating hinges 253 to rotate relative to the middle hinge 251 until the folding device 22 is in a bending state or a flattening state; when the folding device 22 is in a bent state, the front surface of the middle hinge 251, the front surface of the rotating hinge 253, the front surface of the movable hinge 256, the front surface of the first connecting hinge 255 and the front surface of the second connecting hinge 258 enclose a continuous circular arc-shaped supporting surface, each first connecting rod 263 is attached to the corresponding second limiting part, and each second connecting rod 267 is attached to the corresponding fourth limiting part; when the folding device 22 is in the unfolded state, the front surface of the middle hinge 251, the front surface of the rotating hinge 253, the front surface of the movable hinge 256, the front surface of the first connecting hinge 255 and the front surface of the second connecting hinge 258 define a horizontal supporting surface, each first link 263 is attached to the corresponding first limiting portion 2401, and each second link 267 is attached to the corresponding third limiting portion 25553.

During the bending process, each cover 291 rotates relative to the central hinge assembly 250 via the corresponding link 297, i.e., the first pivot axis 2972 of the link 297 rotates within the corresponding through hole 2963, and the kidney or circular hole 2973 of the link 297 is movably connected to the corresponding connecting sleeve 2916 via the second pivot axis 2974; and the two sliding pieces 2556 of the first connecting hinge 255 respectively slide along the corresponding sliding guide grooves 2915, the two sliding pieces 2586 of the second connecting hinge 258 respectively slide along the corresponding sliding guide grooves 2915, so that the two covering pieces 291 rotate and approach each other, the covering piece 291 is always attached to the back of the folding device 22, the projection 2910 of the covering piece 291 slidably pushes the elastic piece 292 along the corresponding positioning groove 2643, and the elastic piece 292 elastically pushes against between the connecting piece 260 and the covering piece 291 to position the covering piece 291 and prevent the covering piece 291 from swinging.

In other usage manners, the second connecting hinge 258 can be rotated toward the first connecting hinge 255, the first connecting portion 262 and the second connecting portion 264 of the two connecting members 260 respectively slide in the second sliding guide slot 2588 and the first sliding guide slot 2587 of the two plate bodies 2583 of the second connecting hinge 258, each first connecting portion 262 slidably pushes the corresponding first connecting rod 263 to rotate toward the side far away from the middle hinge assembly 250, so that one end of the first connecting rod 263 rotates along the corresponding connecting column 2621, and the strip-shaped hole 2631 at the other end slides and rotates along the corresponding protruding shaft 25834. The elastic positioning element 268 is elastically deformed to disengage the positioning head 2685 from the corresponding first positioning hole 2866. The elastic member 2582 elastically abuts between the middle hinge member 250 and the second connecting hinge 258. The first connecting portion 262 and the end connecting portion 273 slide in the second guiding slot 2588 of the second connecting hinge 258, the second connecting portion 264 slides in the first guiding slot 2587 of the second connecting hinge 258, because the two connecting portions 260 of each connecting assembly 24 are connected by the linking mechanism 28, when the connecting portion 260 connected between the second connecting hinge 258 and the linking mechanism 28 rotates, the corresponding first shaft 281 can be driven to rotate, the first shaft 281 drives the first shaft 281 on the other side to rotate through the linking member 282, the first shaft 281 on the other side rotates to drive the connecting portion 260 connected between the first connecting hinge 255 and the linking mechanism 28 to rotate, so that the first connecting hinge 255 synchronously rotates towards the second connecting hinge 258, the first connecting portion 255 drives the first connecting portion 262 and the second connecting portion 264 to slide in the second guiding slot 2558 and the first guiding slot 2557, and the first connecting portion 262 slidably drives the corresponding first connecting rod portion 263 to move away from the middle connecting hinge assembly 250 The first connecting rod 263 moves away from the first limiting portion 2401 until the first connecting rod 263 is attached to the second limiting portion; the second connecting portion 264 slidably drives the corresponding second connecting rod 267 to rotate towards the side far away from the middle hinge joint assembly 250, so that the second connecting rod 267 is separated from the third limiting portion 25553 to move until the second connecting rod 267 is attached to the corresponding fourth limiting portion; the positioning head 2685 of the elastic positioning element 268 slides along the corresponding sliding slot 2867 until sliding to the end of the sliding slot 2867 far away from the first positioning hole 2866; the two links 260 of each linkage assembly 24 are brought together to effect the coordinated bending of the folding device 22. The elastic member 25535 is kept in the elastic pushing state during the bending of the folding device 22.

In another usage, the first connecting hinge 255 and the second connecting hinge 258 may be rotated together in opposite directions, and since the two connecting members 260 of each connecting member 24 are connected by the link mechanism 28, the first connecting hinge 255 and the second connecting hinge 258 drive the connecting member 260 of each connecting member 24 to rotate so as to drive the two first shafts 281 to rotate, and the two connecting members 260 approach each other, so that the first connecting hinge 255 and the second connecting hinge 258 approach each other simultaneously and the folding device 22 is folded.

When the folding device 22 is unfolded and flattened from the bent state, the first connecting hinge 255 is rotated away from the second connecting hinge 258, the first connecting portion 262 and the second connecting portion 264 of the two connecting members 260 slide in the second sliding guide groove 2558 and the first sliding guide groove 2557 of the first connecting hinge 255 respectively, each first connecting portion 262 slidably drives the corresponding first connecting rod 263 to rotate toward the side close to the middle hinge assembly 250, so that one end of the first connecting rod 263 rotates along the corresponding connecting column 2621, and the strip-shaped hole 2631 at the other end slides and rotates along the corresponding protruding shaft 25537; each second connecting portion 264 slidably drives the corresponding second connecting rod 267 to rotate toward the side close to the middle hinge assembly 250, so that one end of the second connecting rod 267 rotates along the corresponding connecting hole 2641, and the strip-shaped hole 2671 at the other end slides and rotates along the connecting column 2593 of the corresponding sliding member 259; the positioning head 2685 of the resilient positioning element 268 slides along the corresponding slide slot 2867. The urging elastic member 25535 elastically abuts between the middle hinge member 250 and the first connecting hinge 255. The first connecting portion 262 and the end connecting portion 273 slide in the second guiding slot 2558 of the first connecting hinge 255, the second connecting portion 264 slides in the first guiding slot 2557 of the first connecting hinge 255, and since the two connecting portions 260 of each connecting assembly 24 are connected by the linking mechanism 28, when the connecting portion 260 connected between the first connecting hinge 255 and the linking mechanism 28 rotates, the corresponding first shaft 281 can be driven to rotate, the first shaft 281 on the other side is driven to rotate by the linking member 282, the first shaft 281 on the other side rotates to drive the connecting portion 260 connected between the second connecting hinge 258 and the linking mechanism 28 to rotate, so that the second connecting hinge 258 synchronously rotates away from the first connecting hinge 255, and the second connecting hinge 258 drives the corresponding first connecting portion 262 and the corresponding second connecting portion 264 to slide in the second guiding slot 2588 and the first guiding slot 2587, the first connecting portion 262 slidably drives the corresponding first connecting rod 263 to rotate toward the side close to the middle hinge assembly 250, so that the first connecting rod 263 is separated from the second limiting portion to move until the first connecting rod 263 is attached to the first limiting portion 2401; the positioning head 2685 of the elastic positioning element 268 is stopped in the corresponding first positioning hole 2866; the two links 260 of each linkage assembly 24 are moved away from each other to effect the coordinated flattening of the folding device 22. The

elastic members

25535, 2582 are kept in the elastically pushed state during the bending of the folding device 22.

In the flattening process, the first connecting portion 262 of the connecting member 260 drives the first end of the first connecting rod 263 to rotate relative to the first connecting portion 262, and the second end of the first connecting rod 263 slides and rotates relative to the protruding shaft 25537 of the first connecting hinge 255, so that the first connecting rod 263 is separated from the second limiting portion to move until the first connecting rod 263 abuts against the first limiting portion 2401; meanwhile, the second connecting portion 264 drives the first end of the second connecting rod 267 to rotate relative to the second connecting portion 264, and the second end of the second connecting rod 267 slides and rotates relative to the connecting post 2593 of the sliding member 259, so that the second connecting rod 267 moves away from the fourth limiting portion until the second connecting rod 267 abuts against the third limiting portion 25553 of the first connecting hinge 255. The first connecting hinge 255 rotates relative to the central hinge assembly 250 about a first axis 281, in particular, the first connecting hinge 255 rotates relative to the central hinge assembly 250 about the first axis 281 away from the second connecting hinge 258 and the first connecting hinge 255 slides relative to the central hinge assembly 250, the movable hinge 256 rotates with the positioning member 27 along a corresponding second axis 275 and the movable hinge 256 slides relative to the mounting frame 255; the second connecting hinge 258 rotates about another first axis 281 relative to the central hinge assembly 250 away from the first connecting hinge 255 and the second connecting hinge 258 slides relative to the central hinge assembly 250, the corresponding movable hinge 256 rotates with the retainer 27 along the corresponding second axis 275 and the movable hinge 256 slides relative to the mounting frame; the relatively far rotation of the two movable hinges 256 respectively drives the two rotating hinges 253 to relatively far rotate relative to the middle hinge 251 until the folding device 22 is in a flat state; when the folding device 22 is in the unfolded state, the front surface of the middle hinge 251, the front surface of the rotating hinge 253, the front surface of the movable hinge 256, the front surface of the first connecting hinge 255 and the front surface of the second connecting hinge 258 jointly define a horizontal supporting surface, each first link 263 is attached to the corresponding first limiting portion 2401, and each second link 267 is attached to the corresponding third limiting portion 25553; the positioning head 2685 of the resilient positioning element 268 is snapped into the corresponding first positioning hole 2866.

During flattening, each cover 291 rotates relative to the central hinge assembly 250 via the corresponding link 297, i.e., the first pivot axis 2972 of the link 297 rotates within the corresponding pivot hole 2963, and the kidney or circular hole 2973 of the link 297 articulates within the corresponding connection sleeve 2916 via the second pivot axis 2974; and the two sliding pieces 2556 of the first connecting hinge 255 respectively slide along the corresponding sliding guide grooves 2915, the two sliding pieces 2586 of the second connecting hinge 258 respectively slide along the corresponding sliding guide grooves 2915, so that the two covering pieces 291 rotate and flatten with each other, the covering piece 291 is always attached to the back of the folding device 22, the projection 2910 of the covering piece 291 slidably pushes the elastic piece 292 along the corresponding positioning groove 2643, so that the elastic piece 292 elastically pushes between the connecting piece 260 and the covering piece 291, so as to position the covering piece 291 and prevent the covering piece 291 from swinging.

In other usage manners, the second connecting hinge 258 can be rotated away from the first connecting hinge 255, the first connecting portion 262 and the second connecting portion 264 of the two connecting members 260 slide in the second sliding guide slot 2588 and the first sliding guide slot 2587 of the two plate bodies 2583 of the second connecting hinge 258 respectively, each first connecting portion 262 slidably drives the corresponding first connecting rod member 263 to rotate toward the side close to the middle hinge assembly 250, so that one end of the first connecting rod member 263 rotates along the corresponding connecting column 2621, and the strip-shaped hole 2631 at the other end slides and rotates along the corresponding protruding shaft 25834. The positioning head 2685 of the resilient positioning element 268 slides along the corresponding slide slot 2867. The elastic member 2582 elastically abuts between the middle hinge member 250 and the second connecting hinge 258. The first connecting portion 262 and the end connecting portion 273 slide in the second guiding slot 2588 of the second connecting hinge 258, the second connecting portion 264 slides in the first guiding slot 2587 of the second connecting hinge 258, because the two connecting portions 260 of each connecting assembly 24 are connected by the linking mechanism 28, when the connecting portion 260 connected between the second connecting hinge 258 and the linking mechanism 28 rotates, the corresponding first shaft 281 can be driven to rotate, the first shaft 281 drives the first shaft 281 on the other side to rotate through the linking member 282, the first shaft 281 on the other side rotates to drive the connecting portion 260 connected between the first connecting hinge 255 and the linking mechanism 28 to rotate, so that the first connecting hinge 255 synchronously rotates away from the second connecting hinge 258, the first connecting hinge 255 drives the first connecting portion 262 and the second connecting portion 264 to slide in the second guiding slot 2558 and the first guiding slot 2557, the first connecting portion 262 slidably drives the corresponding first connecting rod 263 to rotate toward the side close to the middle hinge assembly 250, so that the first connecting rod 263 moves until the first connecting rod 263 is attached to the first limiting portion 2401; the second connecting portion 264 slidably drives the corresponding second connecting rod 267 to rotate towards the side close to the middle hinge joint assembly 250, so that the second connecting rod 267 moves until the second connecting rod 267 is attached to the corresponding third limiting portion 25553; the positioning head 2685 of the elastic positioning element 268 slides along the corresponding sliding slot 2867 until the positioning head 2685 is clamped into the corresponding first positioning hole 2866; the two links 260 of each linkage assembly 24 are moved away from each other to effect the coordinated flattening of the folding device 22. The elastic member 25535 is kept in the elastic pushing state during the unfolding of the folding device 22.

In other usage, the first connecting hinge 255 and the second connecting hinge 258 may rotate together in a direction away from each other, and since the two connecting members 260 of each connecting member 24 are connected by the linking mechanism 28, the first connecting hinge 255 and the second connecting hinge 258 drive the connecting member 260 of each connecting member 24 to rotate together, so as to drive the two first shafts 281 to rotate, and thus the two connecting members 260 are away from each other, so that the first connecting hinge 255 and the second connecting hinge 258 are synchronously away from each other, and the folding device 22 is unfolded.

When the connecting hinge moves relative to the central hinge assembly 250, the fall arrest mechanism 26 slides relative to the connecting hinge; specifically, as the first connecting hinge 255 rotates and slides relative to the middle hinge assembly 250, the link 260 connected between the first connecting hinge 255 and the middle hinge assembly 250 slides relative to the first connecting hinge 255; as the second connecting hinge 258 rotates and slides relative to the central hinge assembly 250, the link 260 connected between the second connecting hinge 258 and the central hinge assembly 250 slides relative to the second connecting hinge 258.

When the folding device 22 is in the flat state, the first link 263 can be attached to the first limiting portion 2401, the second link 267 can be attached to the third limiting portion 25553, the positioning head 2685 of the elastic positioning element 268 is clamped into the corresponding first positioning hole 2866, one pushing elastic element 25535 elastically abuts between the first connecting hinge 258 and the middle hinge assembly 250, and the other pushing elastic element 2582 elastically abuts between the middle hinge assembly 250 and the second connecting hinge 258, so that the sliding element 259 can be prevented from collapsing on the lug 2555 and the connecting hinges can be prevented from collapsing when falling, and the flexible screen fixedly connected with the folding device 22 can be prevented from collapsing and being damaged; when the folding device 22 is in a bent state, the first link 263 can be attached to the second limiting portion, the second link 267 can be attached to the fourth limiting portion, the positioning head 2685 of the elastic positioning element 268 is positioned at the end of the corresponding sliding slot 2867, and one pushing elastic element 25535 elastically abuts between the first hinge assembly 258 and the middle hinge assembly 250, and the other pushing elastic element 2582 elastically abuts between the middle hinge assembly 250 and the second hinge assembly 258, so that the sliding element 259 can be prevented from collapsing on the lug 2555 and the connecting hinges can be prevented from collapsing when falling, and the flexible screen fixedly connected to the folding device 22 can be prevented from being arched and damaged.

Referring to fig. 1 to 4 and fig. 11 to 14, the folding device 22 is disposed between the first frame 21 and the second frame 23, the two lugs 2555 of the first connecting hinge 255 are respectively accommodated in the first frame 21, and the sliding member 259 in the first frame 21 is fixedly connected to the first frame 21. The movable hinge 256 and the mounting frame 255 can slide relatively in a direction perpendicular to the bending axis of the middle hinge assembly 250; the urging elastic member 25535 generates an elastic force that urges the mounting frame 255 to the side away from the center hinge assembly 250, and the elastic member 25531 generates an elastic force that urges the sliding member 259 away from the first connecting hinge 255. At this time, the sliding member 259 is located at one side of the foldable mechanism 25, the sliding member 259 is connected to the first frame 21, the other side of the foldable mechanism 25 opposite to the sliding member 259 is connected to the second frame 23, and the elastic member 2582 is pushed to generate an elastic force pushing the mounting frame to a side away from the middle hinge assembly 250. Alternatively, the urging

elastic members

25535, 2582 and the elastic member 25531 are pre-compressed and then installed at corresponding positions. The front surface of the support member 50 of the folding device 22 is coplanar with the front surface of the first frame 21 and the front surface of the second frame 23. The back surface of the flexible panel 30 is fixed to the front surfaces of the first and

second housings

21 and 23. The back of the flexible screen 30 is slidably attached to the front of the support member 50, and the two are bonded together by an elastic adhesive. The back of the support member 50 is slidably engaged with the central hinge assembly 250, and the two are bonded together by an elastic adhesive.

Optionally, as shown in fig. 2, the supporting element 50 includes a first connecting region 522, a second connecting region 524, and a bendable region 526 located between the first connecting region 522 and the second connecting region 524. Optionally, the first connecting region 522 of the strut 50 is connected to the first connecting hinge 255 and the second connecting region 524 is connected to the second connecting hinge 258. Optionally, the first attachment region 522 of the support 50 is secured to the first attachment hinge 255 and the second attachment region 524 is secured to the second attachment hinge 258. Alternatively, the length of the supporting member 50 may be increased, and the first connecting region 522 of the supporting member 50 is connected to the first connecting hinge 255, and the second connecting region 524 is connected to the second frame 23 and the second connecting hinge 258. Optionally, the bendable region 256 of the support 50 between the first and second hinge joints 255 and 258 is slidably connected to the central hinge assembly 250, and the bendable region 526 of the support 50 between the first and second hinge joints 255 and 258 is slidable relative to the central hinge assembly 250 when the folding device 22 is folded. Optionally, when the folding device 22 is folded, both the first connecting hinge 255 and the second connecting hinge 258 slide relative to the central hinge assembly 250 to reduce the tensile force experienced by the support member 50, leaving its length constant or substantially constant. Since the first connecting joint 255 and the second connecting joint 258 are used as sliding compensation members, additional sliding compensation members are not required, and the space occupied by the folding device 22 can be effectively saved.

Optionally, the flexible member 30 includes a first connecting portion 301, a second connecting portion 303, and a bendable portion 305 between the first connecting portion 301 and the second connecting portion 303. The bendable portion 305 corresponds to the bendable region 526 of the support 50. Optionally, the first connecting portion 301 and the second connecting portion 303 include the non-bending region 33, and the bendable portion 305 includes the bendable region 31. It is understood that the first connection portion 301 and the second connection portion 303 may also be bent. Alternatively, the first connecting portion 301 is connected to the first frame 21, the second connecting portion 303 is connected to the second frame 23 or the second connecting region 524 of the supporting member 50, and the bendable portion 305 is slidably connected to the bendable region 526 of the supporting member 50. Alternatively, the first connection portion 301 is fixed to the first frame body 21, and the second connection portion 303 is fixed to the second frame body 23 or the second connection region 524 of the support 50. Alternatively, the first frame body 21 is connected to the sliding member 259. Alternatively, the first frame body 21 is elastically or fixedly connected to the sliding member 259. When the folding device 22 is folded, the first frame 21 and the second frame 23 slide relative to the middle hinge assembly 250, the first frame 21 slides relative to the first connecting hinge 255, the second frame 23 is fixed relative to the second connecting hinge 258, and the bendable portion 305 slides relative to the bendable region 526 of the supporting member 50, so as to reduce the tensile force applied to the flexible member 30, and keep the length of the flexible member unchanged or substantially unchanged.

Alternatively, as the folding device 22 is flexed, the opposite sides of the bendable region 526 of the support 50 slide inwardly relative to the central hinge assembly 250; the bendable portion 305 of the flexible member 30 slides in the same direction as the side of the bendable region 526 of the support member 50 adjacent to the first attachment region 522 relative to the central hinge assembly 250, generally relative to the bendable region 526 of the support member 50, in the direction of the second attachment portion 524.

Alternatively, when the folding device 22 is folded, the sliding distance of one side of the bendable portion 305 of the flexible member 30 close to the second connecting portion relative to the support sheet 50 is smaller than the sliding distance of the other side of the bendable portion 305 of the flexible member 30 close to the first connecting portion 301 relative to the support sheet 50.

Alternatively, when the folding device 22 is folded, the foldable portion 305 of the flexible member 30 slides less than the first connecting portion 301 relative to the support sheet 50.

Due to the bilateral sliding compensation mode adopted on the inner side, the sliding distance between the first connecting hinge 255 and the second connecting hinge 258 can be reduced, and the working reliability of the folding device 22 is improved. The unilateral sliding compensation mode is adopted on the outer side, so that the occupation of the inner space of the second frame body 23 can be reduced, the layout of devices in the second frame body can be optimized, and a battery with larger capacity can be accommodated.

Optionally, the inner side of the embodiment of the present application may also adopt a single-sided sliding compensation manner, that is, only one side is provided with a slidable connecting hinge, and the connecting hinge on the other side is fixedly or rotatably connected with the adjacent middle hinge assembly.

When the folding device 22 is in the unfolded state, the first link 263 of the fall restraint mechanism 26 abuts or is adjacent to the first restraint portion 2401, and the second link 267 abuts or is adjacent to the third restraint portion 25553, so that when the folding device 22 receives a force pressing toward the middle area, the folding device 22 is not compressed in the lateral direction due to the pressing force, and the screen is arched. When the folding device 22 is in the bent state, the first link 263 of the fall restraint mechanism 26 abuts or is adjacent to the second restraint portion 2402, and the second link 267 abuts or is adjacent to the fourth restraint portion 25554, so that when the folding device 22 receives a pressing force toward the middle region, the folding device 22 is not compressed in the lateral direction due to the pressing force, and the screen is arched.

Alternatively, the supporting member 50 is fixedly connected to the first connecting hinge 255 and the second connecting hinge 258, and when the folding device 22 is folded, the mounting frame 255 is driven to slide relative to the movable hinge 256. The supporting member 50 can bend along with the bending of the folding device 22, and the bendable region 31 of the flexible member 30 can bend along with the bending of the supporting member 50, so that the size of the supporting member 50 does not change during the bending process, and the

elastic members

25535, 2582 push the mounting frames 255, 258 outwards to keep the supporting member 50 in a tight state. The resilient members 25531 push the sliding member 259 outward, tightening the flexible screen.

When the flexible element 30 is in the flattened state, the positioning head 2685 of each elastic positioning element 268 is clamped into the corresponding first positioning hole 2866, the first link 263 abuts against the first limiting portion 2401, and the second link 267 abuts against the third limiting portion 25553, so as to position the bendable mechanism 25 to maintain the flattened state.

Referring to fig. 26 to 34, when the electronic device 100 is bent, a bending force is applied to at least one of the first frame 21 and the second frame 23 of the electronic device 100 to rotate the first connecting hinge 255 connected to the first frame 21 and the second connecting hinge 258 connected to the second frame 23 in a direction adjacent to each other, the two connecting components 24 are used to bend the folding device 22, and the bendable region 31 of the flexible element 30 is bent along with the bending of the supporting element 50. Specifically, if a bending force is applied to the first frame body 21, the first frame body 21 drives the first connecting hinge 255 to rotate along the first axis 281 relative to the middle hinge assembly 250 toward the side away from the flexible member 30; the first connecting hinge 255 drives the connecting members 260 corresponding to the two connecting members 24 to rotate, the two first connecting portions 262 respectively slide in the two second guide chutes 2558 of the first connecting hinge 255, and the two second connecting portions 264 respectively slide in the two first guide chutes 2557 of the first connecting hinge 255, so that the elastic positioning member 268 elastically deforms to allow the positioning head 2685 to disengage from the corresponding first positioning hole 2866; since the two links 260 of each linkage assembly 24 are connected by the linkage 28; therefore, when the connecting member 260 connected between the first connecting hinge 255 and the linkage mechanism 28 rotates, the corresponding first shaft 281 can be driven to rotate, the first shaft 281 on the other side is driven to rotate by the first shaft 281 through the linkage piece 282, and the first shaft 281 on the other side rotates to drive the connecting member 260 connected between the second connecting hinge 258 and the linkage mechanism 28 to rotate, so that the second connecting hinge 258 synchronously rotates towards the first connecting hinge 255; the two first link members 263 rotate toward the second position-limiting portion in the accommodating groove 25536 of the first connecting hinge 255, and the two second link members 267 rotate toward the fourth position-limiting portion in the two through grooves 25551, so that the two connecting members 260 of each connecting assembly 24 are also closed to each other, so that the folding device 22 is in a bending state, and the bendable region 31 of the flexible member 30 bends along with the folding device 22 until the first frame 21 is attached to the back of the second frame 23.

At this time, the folding device 22 is bent, and the flexible member 30 is bent along with the folding device 22, so that the middle hinge assembly 250 is connected with the front surfaces of the first connecting hinge 255 and the second connecting hinge 258 to form an arc-shaped surface, so as to be convenient for attaching the flexible member 30.

During the folding process of the folding device 22, the first connecting hinge 255 and the second connecting hinge 258 rotate about the corresponding first axis 281 relative to the middle hinge assembly 250, and specifically, the two covers 291 of the shielding mechanism 29 rotate relative to the middle hinge assembly 250 along with the folding process of the folding device 22, so that the covers 291 always cover the back of the foldable mechanism 25 to prevent impurities such as dust from entering the folding device 22 from the back of the electronic device 100.

In other bending manners of the electronic device 100, only a bending force may be applied to the second frame 23, and the second frame 23 drives the second connecting hinge 258 to rotate along the first axis 281 relative to the middle hinge assembly 250 toward a side away from the flexible element 30; the second connecting hinge 258 drives the connecting pieces 260 corresponding to the two connecting assemblies 24 to rotate, the two first connecting portions 262 respectively slide in the two second guide chutes 2588 of the second connecting hinge 258, and the two second connecting portions 264 respectively slide in the two first guide chutes 2587 of the second connecting hinge 258, so that the elastic positioning piece 268 elastically deforms to allow the positioning head 2685 to be disengaged from the corresponding first positioning hole 2866; since the two links 260 of each linkage assembly 24 are connected by the linkage 28; therefore, when the connecting member 260 connected between the second connecting hinge 258 and the linkage mechanism 28 rotates, the corresponding first shaft 281 can be driven to rotate, the first shaft 281 on the other side is driven to rotate by the first shaft 281 through the linkage piece 282, and the first shaft 281 on the other side rotates to drive the connecting member 260 connected between the first connecting hinge 258 and the linkage mechanism 28 to rotate, so that the first connecting hinge 255 synchronously rotates towards the second connecting hinge 258; the two first link members 263 rotate toward the second position-limiting portion in the accommodating groove 25536 of the first connecting hinge 255, and the two second link members 267 rotate toward the fourth position-limiting portion in the two through grooves 25551, so that the two connecting members 260 of each connecting assembly 24 are also closed to each other, so that the folding device 22 is in a bending state, and the bendable region 31 of the flexible member 30 bends along with the folding device 22 until the first frame 21 is attached to the back of the second frame 23.

In other bending manners of the electronic device 100, a bending force may be applied to the first frame 21 and the second frame 23 at the same time, and the first frame 21 and the second frame 23 respectively drive the first connecting hinge 255 and the second connecting hinge 258 to rotate relative to the side away from the flexible element 30, and the electronic device 100 is bent by the folding device 22.

When the electronic device 100 needs to be unfolded, the first frame 21 or the second frame 23 is pulled outward, and the first connecting hinge 255 connected to the first frame 21 and the second connecting link 258 connected to the second frame 23 are rotated in a direction away from each other. Specifically, a force that pulls at least one of the first housing 21 and the second housing 23 of the electronic device 100 outward is applied to rotate the first connecting hinge 255 connected to the first housing 21 and the second connecting hinge 258 connected to the second housing 23 in directions away from each other. If a force pulling outward is applied to the first frame body 21, the first frame body 21 drives the connecting member 260 of the first connecting hinge 255 to rotate along the first shaft 281 toward one side of the flexible member 30, the first connecting portion 262 and the second connecting portion 264 of the connecting member 260 slide in the second guiding chute 2558 and the first guiding chute 2557 of the first connecting hinge 255 respectively, so as to drive the first connecting rod 263 and the second connecting rod 267 to rotate toward the middle hinge assembly 250 respectively, the elastic positioning member 268 elastically deforms, and the positioning head 2685 slides along the corresponding chute 2867; since the two links 260 of each connecting unit 24 are connected by the linkage 28, when the link 260 connected between the first connecting hinge 255 and the linkage 28 is rotated, the corresponding first shaft 281 is driven to rotate, the first shaft 281 drives the first shaft 281 on the other side to rotate through the linkage mechanism 28, the first shaft 281 on the other side rotates to drive the connecting member 260 connected between the second connecting hinge 258 and the linkage 28 to rotate, so that the second connecting hinge 258 synchronously rotates towards the position far away from the first connecting hinge 255, the connecting member 260 connected to the second connecting hinge 258 drives the corresponding first connecting rod member 263 and the second connecting rod 267 to rotate towards the middle hinge assembly 250, the elastic positioning member 268 elastically deforms until the positioning head 2685 is clamped into the corresponding first positioning hole 2866, and the two connecting members 260 of each connecting assembly 24 are also far away from each other until the folding device 22 is in the flattening state. The bendable region 31 of the flexible element 30 is flattened with the folding device 22.

In another way of flattening the electronic apparatus 100, only the second frame 23 may be applied with a force of pulling outward, and the second frame 23 may be flattened by the folding device 22.

In other bending modes of the electronic device 100, a force for pulling the first frame 21 and the second frame 23 outward may be applied simultaneously, and the first frame 21 and the second frame 23 respectively drive the corresponding connecting hinge to rotate along the corresponding first shaft 281 toward one side of the flexible member 30, so as to flatten the electronic device 100.

Referring to fig. 35 to fig. 41, an electronic device 100a according to a second embodiment of the invention has a similar structure to that of the first embodiment, except that: the structure of the connecting element 24a, the structure of the fall limiting mechanism 26a, the structure of the shielding mechanism 29a, and the structure of the pushing elastic element 25535 in the second embodiment are different from those in the first embodiment, and the positioning element 27 is omitted from the folding device of the electronic device 100a in the second embodiment, and each connecting element 24a is directly connected to the connecting hinge at the middle hinge assembly 250, as follows:

in the second embodiment, the connecting assembly 24a also includes a fall arrest mechanism and linkage 28, which includes a connecting member 260a connecting the central hinge assembly 250 and the connecting hinge, and a first link 263 and a second link 267 connected between the connecting hinge and the connecting member 260 a. The connector 260a includes a first connector 2601 and a second connector 2602 connected to the middle hinge assembly 250, respectively, and the first connector 2601 and the second connector 2602 are separate structures; one end of the first connecting member 2601 is connected to the first shaft 281, one end of the first connecting member 2601 away from the middle hinge assembly 250 is inserted into the connecting hinge and connected to the first connecting rod 263, one end of the second connecting member 2602 is connected to the first shaft 281, and one end of the second connecting member 2602 away from the middle hinge assembly 250 is inserted into the connecting hinge and connected to the second connecting rod 267. Specifically, one end of the first connector 2601 of each connector 260a near the first connecting hinge 255, which is far from the first shaft 281, is provided with a first connector 2603, the first connector 2603 is slidably inserted into the second guide slot 2558 of the first connecting hinge 255, and the first link member 263 is connected between the first connector 2603 and the protruding shaft 25537 of the first connecting hinge 255; the end of the second connecting member 2602 of each connecting member 260a near the first connecting hinge 255, which is far away from the first shaft 281, is provided with a second connecting portion 2604, the second connecting portion 2604 is slidably inserted into the first guiding slot 2557 of the first connecting hinge 255, and the second link member 267 is connected between the second connecting portion 2604 and the corresponding connecting rod 2593 of the sliding member 259. The first and

second connectors

2601 and 2602 of the connector 260a in this embodiment are separate structures. The pushing elastic member 25535 elastically pushes against between the connecting member 260a and the first connecting hinge 255, and preferably, the pushing elastic member 25535 elastically pushes against between the first connecting portion 2603 and the first connecting hinge 255. Specifically, a convex pillar is disposed on a side of the first connecting portion 2603 facing the first connecting hinge 255, an accommodating groove is disposed on the first connecting hinge 255, the pushing elastic member 25535 is accommodated in the accommodating groove, and one end of the pushing elastic member 25535 is fixedly sleeved on the convex pillar.

The shielding mechanism 29a is also rotatably connected to the back of the middle hinge assembly 250 through a hinge 295, the shielding mechanism 29a includes two covering members 291, each covering member 291 is connected to a corresponding connecting member 26a through a strip-shaped groove and a slide guide, the strip-shaped hole extends along a direction perpendicular to the bending axis of the bendable mechanism 25, one end of the slide guide is slidably received in the strip-shaped hole, the other end of the slide guide is connected to the covering member 291 or the connecting member 26a, and the strip-shaped hole is located in the connecting member 26a or the covering member 291. When the connecting piece 26a rotates along the first shaft 281, the sliding guide part slides in the corresponding strip-shaped hole. In this embodiment, the slot 2606 is a slot 2602, and is disposed on the second connecting member 2602 along a direction perpendicular to the axis of the first shaft 281, the slide guide portion is a slide bar 2918 disposed on the covering member 291, and one end of the slide bar 2918 away from the covering member 291 is slidably received in the slot 2606.

In other embodiments, the strip-shaped groove may also be disposed in the covering member 291, the strip-shaped groove extends along a direction perpendicular to the axial line of the first shaft 281, the sliding guide may be a sliding rod disposed on the connecting member 26a, and one end of the sliding rod away from the connecting member 26a is slidably received in the strip-shaped hole.

Preferably, the sliding bar 2918 is connected to the strip-shaped slot 2606 by a lock 2919, the lock 2919 being slidably disposed in the strip-shaped slot 2606.

The first connecting portion 2603 is provided with an elastic positioning element 268, that is, the first connecting portion 2603 is provided with a receiving groove, the elastic positioning element 268 is received in the receiving groove, one end of the elastic positioning element 268 abuts against the end wall of the receiving groove far away from the first shaft 281, and the other end of the elastic positioning element 268 opposite to the other end of the elastic positioning element passes through the first connecting portion 2603 and is clamped in the first positioning hole 2866 of the linkage mechanism, so as to position the folding device 22a in the flat state or the bent state.

In this embodiment, a plurality of hinges 295 are disposed adjacent to the two covering members 291, and the hinges 295 are arranged along the length direction of the covering member 291; opposite ends of each hinge 295 are hinged to a respective link 297, wherein one end of one link 297 remote from the hinge 295 is hinged to one of the cover members 291, and the other end of the other link 297 remote from the hinge 295 is hinged to the other cover member 291. The rear surface of the middle hinge assembly 250 is provided with a plurality of fixing grooves 2511 corresponding to the hinge parts 295 of the shielding mechanism 29a, and when the shielding mechanism 29a covers the rear surface of the folding device 22a, each hinge part 295 is received and fixed in the corresponding fixing groove 2511, and each link 297 can move in the corresponding fixing groove 2511.

Referring to fig. 38 and 41, a limiting groove 2975 is disposed on a side of each of the connecting rods 297 facing the corresponding covering member 291, and when the folding device is in the bent state, a side of the covering member 291 close to the hinge 295 is received in the limiting groove 2975 of the corresponding connecting rod 297 to position the covering member 291; that is, when the folding device 22a is folded, the edge of the cover 291 near the hinge 295 engages with the stopper groove 2975 of the corresponding link 297 to position the cover 291.

In other embodiments, the hinge 295 and the central hinge assembly 250 may be of unitary construction.

In the folding device 22a of this embodiment, during the folding process, each covering member 291 rotates relative to the middle hinge assembly 250 through the corresponding connecting rod 297, and the two sliding rods 2918 of the covering member 291 slide along the corresponding two strip-shaped grooves 2606, respectively, so that the two covering members 291 rotate and approach each other, and the covering member 291 is always attached to the back surface of the folding device 22 to prevent impurities such as dust from entering the folding device 22 from the back surface.

Referring to fig. 42 to 50, an electronic device 100b according to a third embodiment of the invention has a similar structure to that of the first embodiment, except that: the structure of the supporting component, the structure of the shielding mechanism 29b, the structure of the fall limiting mechanism 26b and the structure of the positioning element in the third embodiment are different from those in the first embodiment, and elements, structures, functions, effects, actions, matching relations, connecting relations, assembling ways, working principles, operating ways and the like which are not mentioned or are not explicitly mentioned in this embodiment are the same as or similar to those in the previous embodiment, and reference may be made to the description of the previous embodiment.

In the third embodiment, a support assembly 50a is provided between the flexible member 30 and the folding device 22 b. The supporting member 50a includes a supporting member 52 and a supporting layer 54 stacked on each other, opposite sides of the supporting member 52 are respectively connected to the front surfaces of the connecting hinges at opposite sides of the bending mechanism 25; specifically, opposite sides of the support member 52 are fixedly coupled to the first and second connecting hinges 255 and 258, respectively.

Preferably, the first frame 21 and the second frame 23 are respectively disposed on two opposite sides of the bending mechanism 25, in this embodiment, the first connecting hinge 255 is connected to the first frame 21, and the second connecting hinge 258 is connected to the second frame 23. One side of the support member 52 is fixedly coupled to the first connecting hinge 255, and the side of the support member 52 remote from the first connecting hinge 255 may be fixedly coupled to both the second connecting hinge 258 and the second frame 23.

The supporting member 52 and the supporting layer 54 are both bendable supporting pieces, two opposite sides of the back surface of the supporting member 52 are respectively and fixedly connected to the front surfaces of the first connecting hinge 255 and the second connecting hinge 258 of the bendable mechanism 25, and the length of the cross section of the supporting member 52 along the direction perpendicular to the bending axis of the bendable mechanism 25 is constant, that is, the length of the cross section of the supporting member 52 in the unfolded state is equal to the length of the cross section of the supporting member in the bending state.

The support 52 and the support layer 54 can be, but are not limited to, copper foil, liquid metal sheet, plastic sheet or other sheet material; in this embodiment, the support member 52 is a liquid metal sheet.

In other embodiments, the support layer 54 may also be a flexible transparent cover sheet, such as a transparent PET film layer, PI film layer, or the like.

Preferably, the supporting member 52 is fixedly connected with the front surface of the connecting hinge joint through the matching of the clamping column and the clamping hole; or the support member 52 and the connecting hinge are connected by fixing glue. Specifically, the back surface of the supporting member 52 is provided with a plurality of clamping posts 521, the front surfaces of the first connecting hinge 255 and the second connecting hinge 258 are provided with a plurality of clamping holes, and the plurality of clamping posts 521 of the supporting member 52 are respectively clamped in the corresponding clamping holes, so that the supporting member 52 is fixedly connected between the first connecting hinge 255 and the second connecting hinge 258.

In this embodiment, the front surface of the first connecting hinge 255 is provided with a plurality of fastening holes 25501 along the length direction thereof, the back surface of the supporting member 52 is provided with a plurality of fastening posts 521 corresponding to the plurality of fastening holes 25501, and each fastening post 521 is fastened in the corresponding fastening hole 25501, so as to fixedly connect one side of the supporting member 52 to the first connecting hinge 255; specifically, a plurality of locking holes 25501 are formed in the front surface of the first connecting hinge 255, and the locking posts 521 of the supporting member 52 are respectively locked in the corresponding locking holes 25501 to be fixedly connected to the first connecting hinge 255. The side of the support 52 remote from the first connecting hinge 255 is fixedly attached to the second connecting hinge 258 and the second frame 23 by adhesive.

In this embodiment, two opposite ends of the first connecting hinge 255 facing away from the second connecting hinge 258 respectively extend outward vertically to form a protruding lug 2555, each protruding lug 2555 is slidably sleeved with the sliding member 259, the first frame 21 is connected to the sliding member 259, the second frame 23 is connected to the second connecting hinge 258, and the back of the supporting member 52 is fixedly connected to the first connecting hinge 255, the second connecting hinge 258 and the second frame 23.

Alternatively, the support layer 54 may be considered as a part of the flexible member 30, i.e., the flexible member 30 includes a flexible screen and the support layer 54 attached below the flexible screen. The support layer 54 may be the same size as the flexible screen and may be fixedly attached by adhesive.

Preferably, one side of the back surface of the supporting layer 54 is fixedly connected to the first frame body 21 and the sliding member 259, the other side of the back surface of the supporting layer 54 is fixedly connected to the second frame body 23, during the bending or flattening process of the bending mechanism 25, the first frame body 21 and the sliding member 259 slide along with the supporting layer relative to the corresponding connecting hinge, and the supporting member 52 and the supporting layer can slide relative to each other. Specifically, the supporting layer 54 is stacked on the front surface of the supporting member 52, and one side of the back surface of the supporting layer 54 is fixedly connected to the front surface of the supporting member 52 away from the bendable mechanism 25, that is, the back surface of the supporting layer 54 is fixedly connected to the supporting member 52 on the front surface of the second frame 23; the other side of the support layer 54 opposite to the back surface is fixedly connected to the first frame 21. Support 52 is in sliding contact with support layer 54 at the bendable region. In this embodiment, the supporting member 52 and the supporting layer 54 can be connected by gluing, clamping, or the like, and the supporting layer 54 and the first frame 21 can be connected by gluing, clamping, or screwing, or the like.

As shown in fig. 43 and 44, preferably, the supporting member 50 further includes a supporting plate 56, the supporting plate 56 is fixed to cover the front surface of the first frame 21, when the supporting plate 56 is connected to the front surface of the first frame 21, the front surface of the supporting member 52 is coplanar with the front surface of the supporting plate 56, and the supporting layer 54 is fixed to cover the front surface of the supporting plate 56 corresponding to the back surface of the first frame 21.

Preferably, the two connecting hinges of the bendable mechanism 25 move relative to the corresponding first connecting rod 263 along with the supporting element 52 during the flattening process, and when the bendable mechanism 25 is flattened, the first connecting rod 263 moves relative to the connecting hinges towards the first limiting portion 2401 until abutting against the first limiting portion to limit the bendable mechanism 25 to continue flattening or bending; when the bendable mechanism 25 is bent, the first connecting rod 263 moves toward the second position-limiting portion relative to the connecting hinge joint until abutting against the second position-limiting portion to limit the bendable mechanism 25 to continue to be flattened or bent.

As shown in fig. 48, the back of the middle hinge 251 is provided with a support 25101, the shielding mechanism 29b is supported on the support 25101 of the middle hinge 251, and the side of the shielding mechanism 29b far from the support 25101 is slidably connected to the connecting hinge which can drive the shielding mechanism 29b to slide relative to the bending mechanism 22 during the bending process of the bending mechanism 29 b. That is, the support 25101 serves to support each cover 291 on the back of the intermediate hinge 251 near the intermediate hinge 251 side.

In this embodiment, the shielding mechanism 29b comprises a fixing member 296 positioned on the supporting portion 25101 and a cover 291 hinged to two opposite sides of the fixing member 296, the cover 291 is used for covering the back of the bending mechanism 22, and one side of the cover 291 away from the fixing member 296 is slidably connected to the corresponding connecting hinge.

As shown in fig. 48 to 56, the support 25101 includes two rows of positioning pieces 25102 provided on opposite sides of the back surface of the intermediate hinge 251. The intermediate hinge 251 forms a cavity corresponding to the position of the cover 291, and the support 25101 is disposed in the cavity. A positioning space 25103 is defined between the back surface of the intermediate hinge 251 and the two rows of positioning pieces 25102, and the fixing piece 296 is positioned in the positioning space 25103 to position the shielding mechanism 29b on the intermediate hinge 251 to limit the movable stroke of the shielding mechanism 29 b. The fastener 296 may be positioned relative to the intermediate hinge 251 by snapping, screwing, gluing, or the like. In this embodiment, a plurality of locking posts 25105 and a plurality of locking holes 25106 are disposed in the positioning space 25103 on the back side of the intermediate hinge 251; the fixing member 296 includes a fixing bar 2960 and a plurality of connecting rods 297, each connecting rod 297 is connected between the fixing bar 2960 and the corresponding cover 291; each of the links 297 is provided at opposite ends thereof with a rotation shaft rotatably coupled to the fixing member 296 and the other rotation shaft rotatably coupled to the corresponding cover 291, and specifically, each of the links 297 includes a link body 2971, a first rotation shaft 2972 provided at one end of the link body 2971, and a second rotation shaft 2974 movably coupled to the opposite end of the link body 2971. One end of the connecting rod body 2971, which is far away from the first rotating shaft 2972, is provided with a waist-shaped or round hole 2973, and the second rotating shaft 2974 is inserted into the waist-shaped or round hole 2973 and the fixing strip 2960. It is understood that both ends of the link body 2971 may be provided with a rotation shaft integrated with the link body 2971, or may be provided with a kidney-shaped or circular hole to movably connect a rotation shaft.

Optionally, the positioning piece 25102 of the supporting portion 25101 extends towards the cover 291. Alternatively, the support 25101 may be used to support the cover 291 or separate from the cover 291 when the folding device 22b is in the bent state. Alternatively, the support 25101 serves to support the cover 291 when the folding device 22b is in the unfolded state. Alternatively, the support 25101 slides relative to the cover 291 when the folding device 22b is bent. The support 25101 supports the cover 291 to support the cover 291 against the cover 291, thereby preventing the cover 291 from being depressed significantly by a user. Optionally, support 25101 supports one side of cover 291 that is adjacent to intermediate hinge 251. Optionally, the heights of the pair of positioning tabs 25102 supporting the two covers 291 are different, wherein one positioning tab 25102 directly abuts or is adjacent to the back of one cover 291, and the other positioning tab 25102 directly abuts or is adjacent to the back of the fixing plate 2912 of the other cover 291. Alternatively, the supporting portion 25101 may abut or be adjacent to the cover 291, and since the supporting portion 25101 functions to prevent the cover 291 from being depressed significantly, it is not necessary to abut the cover 291, but may be adjacent to the cover 291 with a small gap therebetween. By spacing a small gap from the cover 291, friction between the supporting portion 25101 and the cover 291 when the folding device 22b is bent can be reduced or avoided, and the sliding of the cover 291 can be prevented from being affected. Optionally, the gap between the support 25101 and the cover 291 adjacent to the finger support 25101 and the cover 291 is less than or equal to a preset range. Alternatively, the predetermined range may include any value between 0 and 8mm, i.e., it is only necessary to ensure that the cover 291 does not sag significantly when pressed. Optionally, the supporting portion 25101 may also directly abut against the covering member 291 to provide better supporting effect.

Alternatively, when the folding device 22b is in the unfolded state, the support portion 25101 is covered by the cover 291; when the folding device 22b is in the folded state, the support 25101 is located outside the coverage of the cover 291. Alternatively, the outer side of the supporting portion 25101 abuts against one side of the bendable mechanism 25, and the inner side is provided corresponding to the supporting portion 25101.

The side of the fixing member 296 facing the supporting portion 25101 is provided with a plurality of protrusions 2962, each protrusion 2962 is provided with a through hole 2963 along the axial direction parallel to the rotating shaft, the connecting rod 297 is accommodated in the through hole 2963 away from the rotating shaft of the covering member 291, and the middle hinge 251 is provided with a spacing hole 25105 corresponding to the protrusion 2962. Specifically, two connecting rods 297 are respectively arranged at two opposite ends of the fixed bar 2960, and each connecting rod 297 is rotatably connected to the fixed bar 2960; the opposite sides of the end of the fixed bar 2960 are respectively provided with receiving grooves 29601, and each receiving groove 29601 rotatably receives a link 297. The end of the fixed bar 2960 is provided with a protrusion 2962 at the side of each receiving groove 29601, each protrusion 2962 is provided with a through hole 2963 along the axial direction of the rotating shaft 2972, the second rotating shaft 2974 at one end of each link 297 is rotatably inserted into the through hole 2963 of the fixed bar 2960, and the first rotating shaft 2972 at the other end of the link 297 is rotatably inserted into the corresponding connecting sleeve 2916 of the cover 291. A plurality of through holes 2965 are formed in a plurality of locking holes 25106, corresponding to the middle hinge joint 251, on the fixing strip 2960, and a plurality of clamping holes 29604 are formed in a plurality of clamping columns 25105, corresponding to the middle hinge joint 251, on the fixing strip 2960; the fixing member 296 is accommodated in the positioning space 25103 of the intermediate hinge 251, so that the locking post 25105 is locked in the corresponding locking hole 29604 of the fixing member 296, the locking holes 25106 of the intermediate hinge 251 respectively face the through holes 2965 corresponding to the fixing bar 2960, and the locking members pass through the through holes 2965 and are locked in the locking holes 25106.

The fixing pieces 2912 on opposite sides are arranged in a staggered manner. The fixing plate 2912 is fixedly connected to the corresponding cover 291 through the engagement of the locking posts and the locking holes. As shown in fig. 50, in the present embodiment, a fixing groove 29106 is provided on the back surface of the cover 291 corresponding to the fixing piece 2912, and the fixing piece 2912 is accommodated in the fixing groove 29106; the back of the cover 291 is provided with a plurality of fastening posts 29107 protruding from the fixing grooves 29106, each fastening piece 2912 is provided with a fastening hole 29120, and when the fastening piece 2912 is received in the corresponding fixing groove 29106, each fastening post 29107 is fastened in the corresponding fastening hole 29120, so that the fastening piece 2912 is fixedly connected to the cover 291. In this embodiment, each fixing piece 2912 is provided with two spaced fastening holes 29120, two fastening posts 29107 are disposed in each fixing groove 29106 of the covering member 291, and when the fixing piece 2912 is received in the fixing groove 29106, the two fastening posts 29107 are fastened in the two fastening holes 29120, respectively. Preferably, each of the fixing pieces 2912 is fixedly coupled by an adhesive after being accommodated in the fixing groove 29106. Optionally, a glue receiving groove is formed at a surface of each fixing plate 2912 facing the cover 291, and the glue receiving groove is defined by an edge protrusion of the surface of the fixing plate 2912 facing the cover 291, and is used for receiving glue adhered to the fixing plate 2912 and the cover 291.

As shown in fig. 50, 52 and 53, the bump 2910 on the back of the cover 291 has a hook 29109 corresponding to the abutting member 2923, and the elastic member 2921 abuts against the abutting member 2923 to be clamped with the hook 29109. Specifically, a hook 29109 is disposed on a side of the projection 2910 of the back surface of the cover 291 facing the abutting member 2923, a hook 29230 is disposed on a side of the abutting member 2923 facing the hook 29109, the elastic member 2921 abuts against the abutting member 2923 to allow the hook 29230 to be engaged with the hook 29109, so that when the cover 291 rotates with the foldable mechanism 25 relative to the intermediate hinge 251, the hook 29230 of the abutting member 2923 always keeps engaged with the hook 29109 to prevent the cover 291 from being separated from the foldable mechanism 25.

In this embodiment, a positioning rod 29232 is disposed on a side of the abutting member 2923 away from the hook 29230, and one end of the elastic member 2921 is sleeved on the positioning rod 29232, so that the elastic member 2921 is fixedly connected to the abutting member 2923.

As shown in fig. 54, each of the fixing pieces 2912 may be directly fixedly connected to the back surface of the cover 291, and specifically, the back surface of the cover 291 is provided with a rectangular fixture 29108 corresponding to the fixing piece 2912, the fixing piece 2912 is provided with a fixture hole 29121 corresponding to the fixture 29108, and when the fixing piece 2912 is installed, the fixture 29108 is inserted into the fixture hole 29121 of the fixing piece 2912, so that the fixing piece 2912 is fixedly connected to the cover 291. Preferably, after each securing tab 2912 is coupled to the clip aperture 29121 through the mating of the clip 29108 and the clip aperture 29121, the coupling is further secured by an adhesive. Optionally, a glue receiving groove is formed at a surface of each fixing plate 2912 facing the cover 291, and the glue receiving groove is defined by an edge protrusion of the surface of the fixing plate 2912 facing the cover 291, and is used for receiving glue adhered to the fixing plate 2912 and the cover 291.

In other embodiments, each securing tab 2912 is fixedly coupled to the cover 291 by a coupling adhesive.

Referring to fig. 57 to 61, a positioning member is connected between the middle hinge joint 250 and the connecting hinge joint, the first limiting portion 2401 and the second limiting portion 2402 are both disposed on the positioning member, and the first link 263 moves relative to the connecting member 264 and the middle hinge joint assembly 250 during the flattening process of the foldable mechanism 25. When the foldable mechanism 25 is unfolded and flat, the first connecting rod 263 moves towards the first limiting portion 2401 relative to the connecting hinge joint until abutting against or being adjacent to the first limiting portion 2401; when the bending mechanism 25 bends, the first connecting rod 263 moves toward the second position-limiting portion 2402 relative to the connecting hinge until abutting against or adjacent to the second position-limiting portion 2402.

The setting element is including locating the first setting element 27a of middle part hinge joint subassembly 250 back, first setting element 27a is including the end connecting block 273 that is located the tip, and first spacing portion 2401 is located on the end connecting block 273 towards the first spacing face of first link spare 264, and the spacing portion 2402 of second is located and is close to on the end connecting block 273 the spacing face of second of first spacing face. The second limiting surface is parallel to the bending shaft of the bending mechanism 250, and the first limiting surface is inclined relative to the second limiting surface; the first limit surface is adjacent to or connected with the second limit surface; when the bending mechanism 25 is bent to the bending state, the side surface of the first connecting rod 263 abuts against or is adjacent to the second limiting portion 2402; when the foldable mechanism 25 is unfolded to the flat state, the side of the first connecting rod 263 abuts against or is adjacent to the first limiting portion 2402. That is, in the process of bending or flattening the bendable mechanism 25, the end connecting block 273 moves relative to the first link member 264, and when the first link member 264 is attached to the first limiting surface, the bendable mechanism 25 maintains a flattened state; when the first link 264 abuts against the second limiting surface, the bendable mechanism 25 keeps the bent state.

The first positioning element 27a further comprises a central connecting piece 271 hinged to the side of the end connecting piece 273 facing away from the connecting hinge, the central connecting piece 271 being connected to the corresponding rotary hinge 253 and the end connecting piece 273 being connected to the corresponding movable hinge 256. Specifically, the middle connecting block 271 is screwed, clamped or glued to the corresponding rotating hinge 253; the end connection blocks 273 are screwed, snapped or glued to the corresponding movable hinges 256.

The end connecting blocks 273 are provided with elastic members 276, the elastic members 276 are used for elastically pushing the end connecting blocks 273 to move towards the corresponding first connecting rods 263, and when the bendable mechanism 25 is unfolded, the end connecting blocks 273 enable the first limiting portions 2401 on the end connecting blocks 273 to be tightly attached to the corresponding first connecting rods 263 under the elastic pushing force of the elastic members 276, namely, the first limiting surfaces are tightly attached to the corresponding first connecting rods 263.

Preferably, the end connecting blocks 273 are hinged to the corresponding middle connecting blocks 271 through rotating shafts, a gap is formed between each end connecting block 273 and the corresponding middle connecting block 271 along the axial direction of the rotating shaft, and the elastic members 276 are sleeved on the rotating shaft and elastically pressed between the middle connecting blocks 271 and the end connecting blocks 273. The rotation axis is parallel to the first axis 281 and the second axis 275.

When the folding device 22b is in the unfolded state, the elastic member 276 elastically abuts against the positioning member 27a to move toward the corresponding first link member 264, so that the first link member 264 is attached to the first limiting portion 2401 to limit the connecting hinge from moving toward the folding assembly 24 relative to the folding assembly 24. Specifically, in the process of unfolding the folding device, the elastic member 276 elastically pushes the top end connecting block 273 to move toward the first link member 264 until the first position-limiting surface of the positioning member 27a is attached to the first position-limiting surface of the first link member 264, that is, the first position-limiting surface and the first position-limiting surface are in zero-clearance fit.

Furthermore, the end connecting blocks 273 are provided with elastic members 276, the elastic members 276 are used for elastically pushing the end connecting blocks 273 to move towards the corresponding first connecting rods 263, when the foldable mechanism 25 is unfolded, the end connecting blocks 273 are elastically pushed by the elastic members 276 so that the first limiting portions 2401 on the end connecting blocks 273 are tightly attached to the corresponding first connecting rods 263, i.e. the first limiting surfaces are tightly attached to the corresponding first connecting rods 263.

Preferably, the end connection block 273 is hinged to the middle connection block 271 through a rotating shaft 272, and the elastic member 276 is sleeved on the rotating shaft 272 and elastically pressed between the middle connection block 271 and the end connection block 273.

In this embodiment, two first connecting blocks 2733 are arranged at intervals on one side of the end connecting block 273 facing the middle connecting block 271, a hinge slot 2735 is defined between the two first connecting blocks 2733, a second connecting block 2713 corresponding to the hinge slot 2735 is arranged on one side of the middle connecting block 271 facing the end connecting block 273, the second connecting block 2713 is rotatably accommodated in the hinge slot 2735, and a gap is arranged between the end connecting block 273 and the middle connecting block 271 along the axial direction of the rotating shaft 272; that is, the length of the second connection block 2713 in the axial direction of the rotation shaft 272 is smaller than the interval between the two first connection blocks 2733 (the length of the hinge slot 2735). The two first connecting blocks 2733 are provided with connecting holes along the axial direction of the rotating shaft 272, the second connecting block 2713 is provided with through holes along the axial direction of the rotating shaft 272, and the rotating shaft 272 is inserted into the connecting holes and the through holes.

One end of the middle connecting block 271, which is provided with the second connecting block 2713 and is away from the first limiting portion 2401, is provided with a positioning block 2716, one end of the rotating shaft 272 is connected to the positioning block 2716, the other end of the rotating shaft 272 is inserted into the connecting holes of the two first connecting blocks 2733 and the through holes of the second connecting block 2713, and the elastic member 276 is elastically extruded between the positioning block 2716 and the corresponding first connecting block 2733.

The end connection block 273 is provided with a support plate 2737 at a side facing the first link member 263, and the support plate 2737 is used to support the first link member 263. A position-avoiding opening 27370 is formed in one side of the supporting plate 2737, which is away from the first limiting portion 2401, and the position-avoiding opening 27370 is used for accommodating and connecting a connecting column connected to one end of the first connecting rod 263, which is away from the connecting piece 260. Specifically, when the folding device 22 is in the folded state, the connection column connected to the end of the first connection rod 263 away from the connection member 260 is received in the clearance port 27370.

Optionally, when the folding device 22b is unfolded, the moving direction of the first limiting portion 2401 relative to the folding assembly 24 is different from the moving direction of the first limiting portion 2401 relative to the connecting hinge. Optionally, when the folding device 22b is unfolded, the moving direction of the first limiting portion 2401 relative to the folding assembly 24 is perpendicular to the moving direction of the first limiting portion 2401 relative to the connecting hinge. Alternatively, the end connection block 273 may slide relative to the middle connection block 271 in the axial direction of the bending shaft of the folding device 22 b. Alternatively, the elastic member 276 is in an elastically compressed state, generating an elastic force that pushes the end connection block 273 toward the corresponding end of the folding device 24 (i.e., an elastic force that pushes the first stopper portion 2401 toward the first link member 263). Alternatively, the elastic force of the elastic member 276 is perpendicular to the sliding direction of the end connecting block 273 with respect to the connecting hinge. Optionally, the amount of compression of the resilient member 276 when the folding device 24 is in the folded state is less than the amount of compression of the folding device 24 when in the unfolded state. Optionally, when the folding device 24 is bent, the first limiting portion 2401 is separated from the first connection rod 263, and the elastic member 276 recovers to deform to drive the first limiting portion 2401 to slide along the axial direction of the bending shaft of the folding device 24. Optionally, when the folding device 24 is bent, the first limiting portion 2401 is separated from the first connection rod 263, and the elastic element 276 at least partially recovers to deform and drives the first limiting portion 2401 to slide toward the end of the folding device 24 close to the first limiting portion 2401 along the axial direction of the bending shaft of the folding device 24, at which time the elastic element 276 extends. Until the end connecting block 273 abuts against the limiting mechanism of the middle connecting block 271, the end connecting block 273 stops sliding, and the elastic piece 276 stops deforming. Alternatively, when the folding device 24 is unfolded, the first stopper portion 2401 gradually approaches the first link member 263, the elastic member 276 is gradually compressed, and the first stopper portion 2401 slides toward the end away from the folding device 24 near the first stopper portion 2401 in the axial direction of the bending shaft of the folding device 24. When the first position-limiting portion 2401 abuts against the first connecting rod 263, the elastic member 276 is compressed to the maximum extent.

Through the axial sliding of the first limiting portion 2401 and the elastic force of the elastic member 276, a gap between the first connecting rod 263 and the first limiting portion 2401 in the unfolded state due to assembly tolerance, manufacturing accuracy and the like can be eliminated, so that the first connecting rod 263 and the first limiting portion 2401 can be tightly attached to each other, and a better falling limiting effect can be achieved.

It should be understood that the term "bending axis" in the embodiments of the present application refers to an axis around which the element bends or bends, and is not limited to a solid axis or a virtual axis, and may be, for example, a solid axis (such as the first axis, the second axis, etc. in the embodiments of the present application) or a virtual axis of a solid axis hinged between the elements a and B, or may be a virtual axis when the elements a and B rotate relatively.

Optionally, the folding device further comprises a reinforcing member 27b disposed at the back of the middle hinge assembly 250, the reinforcing member 27b comprising a middle connecting block 2771 hinged to opposite sides of the middle hinge 251 and end connecting blocks 2773 hinged to a side of each middle connecting block 2771 facing away from the middle hinge 251, each middle connecting block 2771 of the reinforcing member 27b being connected to a corresponding rotating hinge, and each end connecting block 2773 of the reinforcing member 27b being connected to a corresponding movable hinge 256. Specifically, the reinforcement member 27b includes two middle attachment blocks 2771 hinged to opposite sides of the intermediate hinge 251, and end attachment blocks 2773 hinged to an end of each middle attachment block 2771 opposite the intermediate hinge 251; each intermediate connecting block 2771 is connected to the back of the intermediate hinge 251 through a rotating shaft parallel to the bending axis, the bending axis line, the first axis or the second axis of the bending mechanism 25. Each of the middle attachment blocks 2771 is fixedly attached to the corresponding rotating hinge 253 by screws, and each of the end attachment blocks 2773 is fixedly attached to the corresponding movable hinge 256 by screws.

The reinforcing member 27b and the positioning member 27 are similar in structure, except that the positioning member 27 is provided with a first stopper portion 2401 and a second stopper portion 2402 in comparison with the reinforcing member 27 b. Therefore, the positioning member 27 can be understood as providing the first stopper portion 2401 and the second stopper portion 2402 on the reinforcing member 27 b. Specifically, the end connection block 273 of the positioning member 27 has a structure having more first and

second stopper portions

2401 and 2402 than the end connection block 273 of the reinforcing member 27 b.

Referring to fig. 62 to 65, the elastic positioning element 268a in the present embodiment is disposed between the connecting element 260 and the linkage mechanism 28, and the elastic positioning element 268a is selectively clamped between the connecting element 260 and the linkage mechanism 28 to position the bendable mechanism 25. The elastic positioning element 268a includes a positioning head 2685 slidably abutting against the linkage mechanism 28 or the connecting element 260 and an elastic element 2683 elastically abutting against the positioning head 2685, and the elastic element 2683 abuts against the positioning head 2685 and is positioned on the linkage mechanism 28 or the connecting element 260, so that the linkage mechanism 28 and the connecting element 260 are positioned relatively.

Preferably, the outer circumferential surface of the connecting tube 2865 of the linkage mechanism 28 is provided with a first positioning hole 2866 corresponding to the positioning head 2685, and the elastic member 2683 elastically pushes the positioning head 2685 to be clamped into the first positioning hole 2866 so as to position the bendable mechanism 25 to keep the unfolded state; or the connecting element 260 has a first positioning hole corresponding to the positioning head 2685, and the elastic element 2683 elastically pushes the positioning head 2685 to be inserted into the first positioning hole, so as to position the bendable mechanism 25 to maintain the flat state.

Preferably, the linkage mechanism 28 is provided with a sliding slot 2867 corresponding to the positioning head 2685, and the elastic member 2683 elastically pushes the positioning head 2685 to be clamped in the sliding slot 2867; or the connecting element 260 has a sliding slot 286 corresponding to the positioning head 2685, and the elastic element 2683 elastically pushes the positioning head 2685 to be inserted into the sliding slot 2867.

In this embodiment, the positioning slot 2640 is disposed on the connecting element 260, the elastic element 2683 is accommodated in the positioning slot 2640, a containing hole 2646 communicating with the positioning slot 2640 is disposed on a side of the connecting element 260 facing the link mechanism 28, the positioning head 2685 is a clamping bead accommodated in the containing hole 2646, and the elastic element 2683 is accommodated in the positioning slot 2640 and elastically pushes against the clamping bead, so that a portion of the clamping bead protrudes out of the containing hole 2640 to be positioned in the first positioning hole 2866 or the sliding slot 2867 of the link mechanism 28.

Preferably, a connecting block 2681 is disposed between the elastic element 2683 and the clamping bead, and a recess is disposed on a side surface of the connecting block 2681 facing the clamping bead, and a portion of the clamping bead is rotatably received in the recess.

As shown in fig. 62, 64 and 65, the connecting tube 2865 is rotatably sleeved in the fitting groove 2611 of the connecting member 260, and the elastic positioning member 268a rotates with the connecting member 260 relative to the connecting tube 2865 so that the locking bead is locked in the first positioning hole 2866 or the sliding groove 2867. In this embodiment, the radial radius B of the connector barrel 2865 is less than the radius a of the mating slot 2611. The resilient positioning element 268a is bent to be flat or folded to be flat, and the matching relationship between the first positioning hole 2866, the abutting portion and the sliding slot 2867 of the folding device 24 can be seen from the previous description, and will not be repeated here.

In this embodiment, after the compression spring 2921 is received in the positioning slot 2643 and the elastic positioning element 268a is received in the positioning slot 2640, the first shaft 281 is rotatably connected to the connecting element 260 via the positioning frame 269, so as to prevent the compression spring 2921 and the elastic positioning element 268a from being separated from the connecting element 260.

The foregoing is illustrative of embodiments of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the embodiments of the present invention and are intended to be within the scope of the present invention.

Claims

1. A folding device is characterized by comprising a bending mechanism and a shielding mechanism, wherein the bending mechanism comprises a middle hinge joint assembly and a connecting hinge joint arranged on the side part of the middle hinge joint assembly, and the shielding mechanism slides relative to the bending mechanism and at least partially covers the bending mechanism in the bending and flattening processes of the bending mechanism.

2. The folding apparatus of claim 1 wherein said shutter mechanism rotates about a rotational axis relative to said central hinge assembly when said flexible mechanism is flexed.

3. The folding apparatus of claim 2 wherein said blocking mechanism includes a cover covering the back of said foldable mechanism, said cover being hingedly connected to said central hinge assembly along said pivot axis on a side of said cover remote from said connecting hinge.

4. The folding apparatus of claim 1 wherein said blocking means comprises a first cover portion covering one side of said foldable means and a second cover portion disposed at one end of said first cover portion, said second cover portion covering an end of said foldable means.

5. The folding apparatus of claim 4 wherein said foldable means includes end plates at the ends of said central hinge assembly, said second cover portion being disposed between said end plates and said connecting hinge.

6. The folding device of claim 4 wherein said second cover portion partially overlaps both said end panel and said connecting hinge.

7. A folding device according to claim 4, wherein the area of overlap of the second cover portion with the end panel decreases and the area of overlap of the second cover portion with the connecting hinge increases when the folding device is folded.

8. A folding device according to claim 4, wherein the area of overlap of the second cover portion with the end panel is greater than the area of overlap of the second cover portion with the connecting hinge when the folding device is in the folded condition.

9. A folding device according to claim 4, wherein the area of overlap of the second cover portion with the end panel is less than the area of overlap of the second cover portion with the connecting hinge when the folding device is in the unfolded state.

10. The folding device of claim 3, wherein said blocking mechanism further comprises a link member connected between said central hinge assembly and said cover member, one end of said link member being rotatably connected to said central hinge assembly and the other end of said link member being rotatably connected to said cover member.

11. The folding apparatus of claim 10, wherein said blocking mechanism further comprises a fixed member connected to said central hinge assembly, said one end of said link member being rotatably connected to said fixed member, said link member being rotatably connected to said central hinge assembly via said fixed member.

12. The folding apparatus as claimed in claim 11, wherein the middle hinge assembly has a fixing groove, the fixing member is received in the fixing groove, the fixing member has a through hole, and the one end of the link member has a rotating shaft rotatably inserted in the through hole of the fixing member.

13. A folding apparatus according to claim 10, characterized in that the side of the covering element remote from the connecting joint is provided with a connecting sleeve, and the other end of the link element is provided with a further rotary shaft, which is rotatably plugged into the connecting sleeve.

14. The folding apparatus as claimed in claim 10, wherein the shielding mechanism further comprises a fixing plate, one surface of the fixing plate facing away from the link member is fixedly connected with the covering member, and one surface of the fixing plate facing the link member is rotatably connected with the other end of the link member.

15. The folding apparatus as claimed in claim 10, wherein the covering member is connected to the connecting hinge by a sliding slot and a sliding piece, the sliding slot extends along a direction perpendicular to a bending axis of the bending mechanism, and the sliding piece slides in the sliding slot during bending or flattening of the bending mechanism to drive the covering member to rotate with the connecting hinge relative to the middle hinge assembly.

16. The folding apparatus of claim 15 wherein said chute is disposed in said cover, and said slider is disposed in said connecting hinge; or the guide sliding groove is arranged on the connecting hinged joint, and the sliding piece is arranged on the covering piece.

17. The folding device of claim 1, further comprising a resilient member resiliently pressing against the shutter mechanism, wherein a direction of the resilient member is parallel to a sliding direction of the shutter mechanism with respect to the bendable mechanism.

18. The folding apparatus of claim 17 wherein said foldable mechanism includes a connector connected between said central hinge member and said connecting hinge and slidable relative to said foldable mechanism following folding or unfolding of the foldable mechanism, said resilient member resiliently connected between said connector and said shutter mechanism.

19. The folding apparatus of claim 18 wherein the connector includes a detent, the blocking mechanism includes a projection received in the detent, the resilient member is positioned in the detent and abuts against the projection, and the projection slides in the detent and compresses the resilient member when the blocking mechanism rotates relative to the central hinge assembly.

20. The folding apparatus as claimed in claim 19, wherein the end of the protrusion forms a hook, and the corresponding end of the elastic member forms a hook cooperating with the hook.

21. The folding apparatus as claimed in claim 20, wherein the hook and clasp are retained during folding of the folding assembly.

22. The folding apparatus of claim 18 wherein said connecting hinge is slidable relative to said central hinge assembly, and wherein the distance said blocking mechanism slides relative to said connector is less than the distance said blocking mechanism slides relative to said connecting hinge when the folding apparatus is folded.

23. The folding device of claim 10, wherein the bending mechanism comprises a connecting member, the connecting member is connected between the middle hinge joint assembly and the connecting hinge joint and can slide relative to the bending mechanism along with bending or flattening of the bending mechanism, the covering member is connected with the connecting member through a strip-shaped groove and a sliding guide portion, the strip-shaped groove extends along a direction perpendicular to a bending axis of the bending mechanism, and the sliding guide portion slides in the strip-shaped groove during bending or flattening of the bending mechanism so as to drive the covering member to rotate relative to the middle hinge joint assembly along with the connecting hinge joint.

24. The folding device of claim 23, wherein the strip-shaped groove is formed in the connecting member, the slide guide portion is a slide bar arranged on the covering member, and one end of the slide bar, which is far away from the covering member, is accommodated in the strip-shaped groove; or the strip-shaped groove is arranged on the covering piece, the sliding guide part is a sliding rod arranged on the connecting piece, and one end, far away from the connecting piece, of the sliding rod is accommodated in the strip-shaped groove in a sliding mode.

25. The folding device of claim 24 wherein said slide bar is connected to said strip-shaped channel by a fastener that slidingly engages said connector or said cover.

26. The folding device of claim 15 or 23, wherein a pushing elastic member is disposed between the connecting hinge and the connecting member, and the pushing elastic member is configured to push the connecting hinge away from the middle hinge assembly.

27. A folding apparatus according to claim 3, wherein the central hinge assembly is provided with a respective connecting hinge on opposite sides thereof, and wherein a cover member is provided between each connecting hinge and the central hinge assembly, the cover member being rotatable with the respective connecting hinge relative to the central hinge assembly.

28. An electronic device, comprising a flexible member, a housing and the folding device according to any one of claims 1 to 27, wherein the housing comprises a first frame and a second frame, the folding device is disposed between the first frame and the second frame, the flexible member is disposed on the housing and the folding device, and the flexible member is bent or flattened along with the folding device.