CN113719523A

CN113719523A - Hinge mechanism, folding device and electronic equipment

Info

Publication number: CN113719523A
Application number: CN202010458324.5A
Authority: CN
Inventors: 韦炜; 廖德知
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd; Royole Corp
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-11-30

Abstract

The invention provides a hinge mechanism, which comprises two rotating parts, a connecting part positioned between the two rotating parts and a transmission part connected between each rotating part and the connecting part, wherein each rotating part is close to or far away from the connecting part through the corresponding transmission part, and when the two rotating parts are bent relatively, the two rotating parts move oppositely through the transmission parts and the connecting part, so that the folding device cannot have accumulated tolerance in the bending process. The application also provides a folding device provided with the hinge mechanism and an electronic device provided with the folding device.

Description

Hinge mechanism, folding device and electronic equipment

Technical Field

The invention relates to the field of flexible part support, in particular to a hinge mechanism for supporting a flexible part, a folding device provided with the hinge mechanism 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 support structure which can adapt to the bending requirement is generally composed of a plurality of hinges, and adjacent hinges can rotate relatively through hinge joints of pin shafts or virtual shafts. However, the current supporting structure is usually realized by a plurality of sets of gear racks, the dimension chain of the gears is long, the accumulated tolerance is large, and therefore, a screen compensation sliding block is required to be arranged for tolerance compensation, and the mechanism is complex.

Disclosure of Invention

The invention provides a hinge which does not need to be provided with a tolerance compensation sliding block and has a simple structure, a folding device provided with the hinge, and electronic equipment provided with the folding device.

The invention provides a hinge mechanism which comprises two rotating parts, a connecting part positioned between the two rotating parts and a transmission part connected between each rotating part and the connecting part, wherein each rotating part is close to or far away from the connecting part through the corresponding transmission part, and when the two rotating parts are bent relatively, the two rotating parts move oppositely through the transmission parts and the connecting part.

The invention also provides a folding device, which comprises at least two hinge joint units and a hinge mechanism, wherein the hinge mechanism is connected between two adjacent hinge joint units, and the adjacent hinge joint units are bent or flattened through the hinge mechanism; the hinge mechanism includes two rotation pieces, is located two connecting pieces that rotate between the piece to and connect in each rotation piece and the driving medium between the connecting piece, two rotate the piece through the driving medium that corresponds for the connecting piece is close to or keeps away from, two when rotating the relative buckling of piece, two rotate the piece and pass through driving medium and connecting piece and remove in opposite directions.

The invention also provides electronic equipment which comprises a folding device and the flexible piece, wherein the flexible piece covers the front face of the folding device, and the flexible piece is bent or flattened along with the bending or flattening of the folding device.

The folding device of the electronic equipment comprises at least two hinge joint units and a hinge mechanism, wherein when the two rotating parts of the hinge mechanism are bent, the two rotating parts move oppositely through a transmission part and a connecting part, so that the accumulated tolerance can not appear in the flattening process or the bending process of the folding device, namely the length dimension of the front surface of the folding device in the flattening state along the direction vertical to the bending shaft of the hinge mechanism is equal to the length dimension of the front surface of the folding device in the bending state along the direction vertical to the bending shaft of the hinge mechanism, therefore, the length of the flexible part covered on the front surface of the folding device can not change in the bending process or the flattening process, the accumulated tolerance is avoided, and a screen compensation sliding block is not required to be arranged for tolerance compensation; and the number of parts is reduced, so that the folding device is simple in structure and convenient to produce and manufacture.

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 an embodiment of the present application.

Fig. 2 is a schematic perspective view of the electronic device in fig. 1 from another perspective.

Fig. 3 is an exploded perspective view of the electronic device of fig. 1.

Fig. 4 is a side view of the folding device of the electronic apparatus in fig. 1 in a flattened state.

Fig. 5 is a side view of the folding device of fig. 4 in a folded state.

Fig. 6 is an enlarged perspective view of one of the hinge mechanisms in the electronic device of fig. 3.

Fig. 7 is a perspective view of another perspective of the hinge mechanism of fig. 6.

Fig. 8 is a perspective view showing a bent state of the hinge mechanism in fig. 6.

Fig. 9 is a perspective view of another perspective of the hinge mechanism of fig. 8.

Fig. 10 is a side schematic view of the hinge mechanism of fig. 6.

Fig. 11 is a side schematic view of the hinge mechanism of fig. 8.

Fig. 12 is a partially exploded schematic view of the hinge mechanism of fig. 6.

Fig. 13 is a partially exploded schematic view from another perspective of the hinge mechanism of fig. 12.

Fig. 14 is a further exploded schematic view of the hinge mechanism of fig. 12.

Fig. 15 is a further exploded schematic view from another perspective of the hinge mechanism of fig. 13.

Fig. 16 is a schematic perspective view of a folded state of a folding device of an electronic apparatus in an embodiment of the present application.

Fig. 17 is a cross-sectional view of the electronic device of fig. 1 taken along line XVII-XVII.

Fig. 18 is a perspective view of the folding device of fig. 17 in a folded state.

FIG. 19 is a cross-sectional view of the electronic device of FIG. 1 taken along line XIX-XIX.

Fig. 20 is a perspective view of the folding device of fig. 19 in a folded state.

Fig. 21 is a cross-sectional view of the electronic device of fig. 1 taken along line XXI-XXI.

Fig. 22 is a perspective view of the folding device of fig. 21 in a folded state.

Fig. 23 is a cross-sectional view of the electronic device of fig. 1 taken along line XXV-XXV.

Fig. 24 is a cross-sectional view of the electronic device of fig. 23 after bending.

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 3, an electronic device 100 according to an embodiment of the invention includes a folding apparatus 20 and a flexible member 80, the flexible member 80 covers a front surface of the folding apparatus 20, the folding apparatus 20 includes at least two hinge units and a hinge mechanism 30 connected between the adjacent hinge units; at least two hinge joint units are bent or unfolded through the hinge mechanism 30, the flexible piece 80 covers the front faces of the at least two hinge joint units, and the flexible piece 80 is bent or unfolded along with the bending or unfolding of the folding device 20. The hinge mechanism 30 is used for connecting two adjacent hinge joint units, the hinge mechanism 30 comprises two rotating pieces 31, a connecting piece 33 positioned between the two rotating pieces 31 and a transmission piece 35 connected between each rotating piece 31 and the connecting piece 33, the two rotating pieces 31 are close to or far away from the connecting piece 33 through the corresponding transmission piece 35, when the two rotating pieces 31 are bent relatively, the two rotating pieces 31 move oppositely through the transmission piece 35 and the connecting piece 33, and when the two rotating pieces 31 are relatively flattened, the two rotating pieces 31 move oppositely through the transmission piece 35 and the connecting piece 33; so that the folding device 20 does not have a tolerance stack-up during the flattening process or the bending process. When the two rotating pieces 31 are in a flat state or a bent state, the lengths of the front surfaces of the two rotating pieces 31 in the direction perpendicular to the bending axis are equal; that is, when the two rotation members 31 are in the flat state, the length dimension of the front surfaces of the two rotation members 31 in the direction perpendicular to the bending axis of the hinge mechanism 30 is equal to the length dimension of the front surfaces of the two rotation members 31 in the direction perpendicular to the bending axis of the hinge mechanism 30 when the two rotation members 31 are in the bent state.

Preferably, in the hinge mechanism 30, during bending or flattening, the length dimension of the front faces of the two rotating members 31 in the direction perpendicular to the bending axis of the hinge mechanism 30 is kept constant, so that the length dimension of the front faces of the two hinge joint units connected by the hinge mechanism 30 in the direction perpendicular to the bending axis of the hinge mechanism 30 is also kept constant.

In this embodiment, the folding device 20 includes two adjacent first hinge joint units 201, a second hinge joint unit 203 and a third hinge joint unit 205, the second hinge joint unit 203 is located on one side of one of the first hinge joint units 201 facing away from the other first hinge joint unit 201, and the third hinge joint unit 205 is located on one side of the other first hinge joint unit 201 facing away from the second hinge joint unit 203. Two first hinge joint units 201 are connected in a bendable manner through at least one hinge mechanism 30, a second hinge joint unit 203 is connected in a bendable manner with the corresponding first hinge joint unit 201 through at least one hinge mechanism 30, and a third hinge joint unit 205 is connected in a bendable manner with the corresponding first hinge joint unit 201 through at least one hinge mechanism 30. When the folding device 20 is in a flat state, the front surfaces of the two first hinge joint units 201, the front surface of the second hinge joint unit 203 and the front surface of the third hinge joint unit 205 together form a horizontal supporting surface; when the folding device 20 is in the folded state, the front surfaces of the two first hinge joint units 201, the front surface of the second hinge joint unit 203 and the front surface of the third hinge joint unit 205 are spliced into a continuous circular arc-shaped supporting surface. The length dimension of the horizontal support surface along the direction perpendicular to the bending axis of the hinge mechanism 30 is equal to the length dimension of the arc-shaped support surface along the direction perpendicular to the bending axis of the hinge mechanism 30.

In this embodiment, the flexible member 80 is a flexible screen, 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.

The folding device 20 of the electronic device 100 of the present invention comprises at least two hinge joint units and a hinge mechanism 30 connected between the at least two hinge joint units, wherein the flexible member 80 covers the front surfaces of the at least two hinge joint units, and when the two rotating members 31 of the hinge mechanism 30 are bent, the two rotating members 31 move towards each other through the transmission member 35 and the connection member 33, so that the folding device 20 does not have accumulated tolerance in the flattening process or the bending process; that is, the length of the front surface of the folding device 20 in the direction perpendicular to the bending axis thereof when the folding device 20 is unfolded is the same as the length of the front surface of the folding device 20 in the direction perpendicular to the bending axis thereof when the folding device is bent. Therefore, the length of the flexible member 80 is not changed in the bending process or the flattening process of the flexible member 80 covered on the front surface of the folding device 20, no tolerance is accumulated, and no screen compensation slider is required to be arranged for tolerance compensation; and the number of the parts of the compensation slide block is reduced, so that the folding device 20 has simple structure and is convenient to produce and manufacture.

Referring to fig. 3 and 4, each first hinge unit 201 is a substantially bar-shaped block, and the first hinge unit 201 includes a front surface 2011, a back surface 2013 opposite to the front surface 2011, two opposite side surfaces 2015, and two opposite end surfaces; each side 2015 is an inclined surface, i.e., the side 2015 extends from the side of the back 2013 to the front 2011 and inclines outwards. Two opposite sides of the front 2011 are respectively provided with arc surfaces 2016, the two first hinge joint units 201 are symmetrically arranged, and when the folding device 20 is in a flattening state, the distance L1 between two sides of the two adjacent arc surfaces 2016 of the two first hinge joint units 201, which are far away from each other, is equal to the sum of the arc lengths of the two arc surfaces 2016; the range of an included angle a1 formed by the side surfaces 2015 of the two first hinge joint units 201 is more than 0 degree and less than 180 degrees; in this embodiment, the angle a1 between the two sides 2015 is 60 degrees.

Specifically, when the folding device 20 is in the unfolded state, a gap exists between two adjacent side edges of the arc surfaces 2016 of the two first hinge joint units 201, which are close to each other; when the folding device 20 is in the folded state, the gap between the two sides of the adjacent arc surfaces 2016 of the two first hinge unit 201, which are close to each other, disappears.

The second hinge unit 203 is substantially a rectangular frame, and a circuit board and various electronic devices are arranged in the rectangular frame, and the circuit board is electrically connected to the flexible member 80. The second hinge unit 203 includes a front surface 2031, a back surface 2033 facing away from the front surface 2031, a side surface 2035 facing the corresponding first hinge unit 201, a side surface opposite to the side surface 2035, and opposite end surfaces; the side surface 2035 is an inclined surface, i.e., the side surface 2035 extends obliquely outward from the side edge of the back surface 2033 toward the front surface 2031. An arc surface 2036 is arranged on one side of the front surface 2031 close to the first hinge unit 201, and the arc surface 2036 is symmetrically arranged with the adjacent arc surface 2016; when the folding device 20 is in the unfolded state, the distance L2 between the two sides of the arc surface 2036 of the second hinge unit 203, which are away from each other, and the adjacent arc surface 2016 is equal to the sum of the arc lengths of the arc surface 2016 and the arc surface 2036; the side surface 2035 of the second hinge element 203 and the adjacent side surface 2015 enclose an included angle a2 in a range of more than 0 degrees and less than 180 degrees; in this embodiment, the angle a2 between the two

side surfaces

2015, 2035 is 60 degrees.

Specifically, when the folding device 20 is in the unfolded state, a gap exists between two adjacent side edges of the arc surface 2036 of the second hinge unit 203 and the adjacent arc surface 2016; when the folding device 20 is in the folded state, the gap between the two sides where the arc surface 2036 of the second hinge unit 203 and the adjacent arc surface 2016 are close to each other disappears.

The third hinge unit 205 is substantially a rectangular frame body in which a circuit board and various electronic devices are provided. The third hinge unit 205 includes a front face 2051, a rear face 2053 facing away from the front face 2051, a side face 2055 facing the corresponding first hinge unit 201, and two opposite end faces; the side faces 2055 are inclined faces, that is, the side faces 2055 extend obliquely outward from the side edges of the back face 2053 toward the front face 2051. An arc surface 2056 is arranged on one side of the front surface 2051, which is close to the corresponding first hinge unit 201, and the arc surface 2056 is symmetrically arranged with the adjacent arc surface 2016; when the folding device 20 is in the flattening state, the distance L3 between the two side edges of the arc surface 2056 of the third hinge unit 205, which are away from the adjacent arc surface 2016, is equal to the sum of the arc lengths of the arc surface 2016 and the arc surface 2066; the side 2055 of the third hinge element 205 encloses an angle a3 with the adjacent side 2015 in a range of greater than 0 degrees to less than 180 degrees, and in this embodiment, the angle a3 between the two

sides

2015, 2055 is 60 degrees.

Specifically, when the folding device 20 is in the flat state, a gap exists between the two adjacent side edges of the arc surface 2056 of the third hinge unit 205 and the adjacent arc surface 2016; when the folding device 20 is in the folded state, the gap between the two sides where the circular arc surface 2056 of the third hinge unit 205 and the adjacent circular arc surface 2016 are close to each other disappears.

It is understood that the shapes of the first hinge unit 201, the second hinge unit 203 and the third hinge unit 205 may be the same, and are not limited to bar-shaped or rectangular frames, and may be other polygonal frames, circular arc frames, etc. that can be connected to each other and provide a supporting surface for the flexible member 80.

As shown in fig. 3, two opposite positioning notches are formed in the adjacent side surfaces of the two hinge joint units, and two opposite ends of the hinge mechanism 30 are respectively connected to the two positioning notches. Specifically, one side of each first hinge unit 201 facing the other first hinge unit 201 is provided with a first positioning notch 2017, the two first positioning notches 2017 of the two first hinge units 201 are opposite, and a space surrounded by the two first positioning notches 2017 is used for accommodating at least one hinge mechanism 30; a second positioning notch 2018 is formed in one side, away from the first positioning notch 2017, of each first hinge unit 201; a third positioning notch 2037 is formed in one side, facing the first hinge unit 201, of the second hinge unit 203, the third positioning notch 2037 is opposite to the second positioning notch 2018 of the adjacent first hinge unit 201, and a space enclosed by the third positioning notch 2037 and the second positioning notch 2018 is used for accommodating at least one hinge mechanism 30; a fourth positioning notch 2057 is formed in one side, facing the first hinge unit 201, of the third hinge unit 205, the fourth positioning notch 2057 is opposite to the second positioning notch 2018 of the adjacent first hinge unit 201, and a space enclosed by the fourth positioning notch 2057 and the second positioning notch 2018 is used for accommodating at least one hinge mechanism 30.

Referring to fig. 3 to 5, two adjacent first hinge joint units 201 are hinged by the hinge mechanism 30, so that when the folding device 20 is in the flat state, the distance L1 between the two first hinge joint units 201 is equal to the arc length of the complete arc surface spliced by the arc surfaces 2016 of the two first hinge joint units 201 when the folding device 20 is bent; the second hinge joint unit 203 is hinged to the corresponding first hinge joint unit 201 through the hinge mechanism 30, so that when the folding device 20 is in a flattening state, the distance L2 between the second hinge joint unit 203 and the first hinge joint unit 201 is equal to the arc length of a complete arc formed by splicing the arc surface 2036 of the second hinge joint unit 203 and the arc surface 2016 of the first hinge joint unit 201 when the folding device 20 is bent; the third hinge joint unit 205 is hinged to the corresponding first hinge joint unit 201 through the hinge mechanism 30, so that when the folding device 20 is in the flat state, the distance L3 between the third hinge joint unit 205 and the first hinge joint unit 201 is equal to the arc length of a complete arc formed by splicing the arc surface 2056 of the third hinge joint unit 205 and the arc surface 2016 of the first hinge joint unit 201 when the folding device 20 is bent.

At least one hinge mechanism 30 is respectively arranged between two adjacent first hinge joint units 201, between the second hinge joint unit 203 and the corresponding first hinge joint unit 201, and between the third hinge joint unit 205 and the corresponding first hinge joint unit 201; so that when the folding device 20 is in the flat state, the distance L4 between the side of the second hinge unit 203 away from the first hinge unit 201 and the side of the third hinge unit 205 away from the first hinge unit 201 is equal to the length L5 between the side of the second hinge unit 203 away from the first hinge unit 201 and the side of the third hinge unit 205 away from the first hinge unit 201 when the folding device 20 is in the bent state. Therefore, the flexible member 80 covered on the front surface of the folding device 20 has a length dimension equal to that of the folding device 20 in a flattened state, so that the flexible member 80 has no accumulated tolerance and does not need to be provided with a screen compensation slider for tolerance compensation.

Referring to fig. 6-11, fig. 6-11 are schematic views of a hinge mechanism in multiple states. The hinge mechanism 30 includes two rotation members 31, a connection member 33 between the two rotation members 31, and a transmission member 35 connected between each rotation member 31 and the connection member 33. Each transmission piece 35 is rotationally connected to the connecting piece 33, and when the transmission piece 35 rotates relative to the connecting piece 33, the corresponding rotating piece 31 is driven to move relative to the connecting piece 33; in this embodiment, each transmission member 35 is engaged with the connecting member 33 and the corresponding rotating member 31 in a rotating manner, and the transmission member 35 is used for converting the rotation of the transmission member 35 relative to the connecting member 33 into the sliding of the transmission member 35 relative to the corresponding rotating member 31. Specifically, the two rotation members 31 of each hinge mechanism 30 are symmetrical along the center line O of the link member 33, and each rotation member 31 includes a front surface 310, and the front surface 310 includes a circular arc portion 311 adjacent to the link member 33. Specifically, the two rotating members 31 are respectively connected to two opposite sides of the connecting member 33 through corresponding transmission members 35, and when the two rotating members 31 are in a flattened state, the front surfaces 310 of the two rotating members 31 and the front surface of the connecting member 33 are on the same horizontal plane; when the two rotating members 31 are bent relative to the connecting member 33, the circular arc portions 311 of the two rotating members 31 are spliced to form a circular arc surface. As shown in fig. 6 and 10, when the hinge mechanism 30 is in the flat state, the first length P1 between the sides of the arc portions 311 of the two rotating members 31 adjacent to the corresponding transmission members 35 is equal to the sum of the arc lengths of the two arc portions 311. As shown in fig. 8 and 11, when the hinge mechanism 30 is in a bent state, the two arc portions 311 are combined to form an arc surface, the arc length of the arc surface is a second length value P2, and the second length value P2 is equal to the first length value P1; therefore, the length of the front surface of the hinge mechanism 30 is made constant during the bending or flattening of the hinge mechanism 30, i.e., the hinge mechanism 30 has no accumulated tolerance.

Specifically, when the hinge mechanism 30 is in a flattened state, a gap exists between two side edges of the arc portions 311 of the two rotating members 31 which are close to each other; when the hinge mechanism 30 is in the folded state, the gap between the two sides of the arc portions 311 of the two rotating members 31 which are close to each other disappears, thereby forming an arc-shaped supporting surface of the edge.

Referring to fig. 10 to 15, each of the rotating members 31 is slidably connected to the corresponding transmission member 35, and the opposite ends of the connecting member 33 are rotatably connected to the corresponding transmission members 35; when the hinge mechanism 30 is switched from the flat state to the bent state, each rotating member 31 slides in a direction close to the connecting member 33 relative to the corresponding transmission member 35, and each rotating member 31 drives the corresponding transmission member 35 to rotate and drives the connecting member 33 to rotate relative to the transmission member 35 until the front surfaces of the two rotating members 31 are spliced into a continuous supporting surface. Specifically, each rotating member 31 is connected with the corresponding transmission member 35 through the matching of a rack and a gear, each transmission member 35 is connected with the connecting member 33 through the matching of a gear, each rotating member 31 is provided with a horizontal sliding groove 312, each connecting member 33 comprises a first connecting shaft 330 accommodated in the horizontal sliding groove 312, each transmission member 35 comprises a rotating shaft 350 accommodated in the horizontal sliding groove 312, when the hinge mechanism 30 is switched from a flat state to a bent state, each transmission member 35 slides towards the direction close to the connecting member 33 relative to the corresponding transmission member 35 to drive the corresponding transmission member 35 to rotate relative to the connecting member 33, so that the first connecting shaft 330 and the rotating shaft 350 move in the horizontal sliding groove 312 to drive the transmission members 35 to approach the connecting member 33 until the front faces of the two rotating members 31 are spliced; so that the circular arc portions 311 of the two rotating members 31 are combined to form a continuous circular arc-shaped supporting surface.

In other embodiments, at least one of the rotating shaft 350 of each transmission member 35 and the adjacent first connecting shaft 330 is movably received in the horizontal sliding slot 312 of the corresponding rotating member 31. Specifically, if the rotating shaft 350 is movably received in the corresponding horizontal sliding slot 312, the first connecting shaft 330 is movably received in the corresponding receiving slot 318; if the first connecting shaft 330 is movably received in the corresponding horizontal sliding slot 312, the rotating shaft 350 is movably received in the corresponding receiving slot 318; when the hinge mechanism 30 is switched from the flat state to the bent state, each rotating member 31 slides towards the direction close to the connecting member 33 relative to the corresponding transmission member 35 to drive the corresponding transmission member 35 to rotate relative to the connecting member 33, so that the rotating shaft 350 or the first connecting shaft 330 moves in the horizontal sliding groove 312 to drive the transmission members 35 to approach the connecting member 33 until the front surfaces of the two rotating members 31 are spliced; so that the circular arc portions 311 of the two rotating members 31 are combined to form a continuous circular arc-shaped supporting surface.

Each rotating member 31 is provided with a rack 313 along the length direction of the horizontal sliding chute 312, and each transmission member 35 is provided with a transmission gear partially meshed with the rack 313; the connecting element 33 comprises a connecting gear 332 engaged with another portion of the transmission gear, and the rotating element 31 slides with respect to the corresponding transmission element 35, so that the rack 313 rotates the transmission gear, and at the same time, the transmission gear rotates with respect to the connecting gear, which rotates the connecting element 33 with respect to the transmission element 35. Specifically, as shown in fig. 14 and 15, the transmission gear of each transmission member 35 includes a first transmission gear 351 engaged with the rack 313 and a second transmission gear 352 adjacent to the first transmission gear 351, the first transmission gear 351 and the second transmission gear 352 are spaced apart in the length direction of the transmission member 35, that is, two second transmission gears 352 are provided at intervals along the length direction of each transmission member 35, and the first transmission gear 351 is located between the two second transmission gears 352; the connecting gear 332 of the connecting element 33 is engaged with the second transmission gear 352, and the rotating element 31 translates relative to the transmission element 35, so that the rack 313 drives the first transmission gear 351 to rotate, and simultaneously the second transmission gear 352 rotates relative to the connecting gear 332 to drive the connecting element 33 to rotate, so that the two rotating elements 31 are close to or away from each other, and the two transmission elements 35 are close to or away from each other, thereby bending or flattening the hinge mechanism 30.

In other embodiments, the transmission gear of each transmission member 35 has a larger width along the length direction of the transmission member 35, and a portion of the transmission gear is engaged with the rack 313 of the corresponding rotation member 31, and another portion of the transmission gear is engaged with the connection gear 332 of the connection member 33. The rotating member 31 slides relative to the transmission member 35, so that the rack 313 drives the transmission gear to rotate, and the transmission gear also rotates relative to the connecting gear 332 to drive the connecting member 33 to rotate relative to the transmission member 35; so that the two rotation members 31 approach or move away from each other and the two transmission members 35 approach or move away from each other, and bending or flattening of the hinge mechanism 30 is achieved.

As shown in fig. 14 and 15, each of the rotating members 31 includes an L-shaped rotating plate 316 and two connecting plates 317 disposed at opposite sides of the rotating plate 316, the rotating plate 316 and the two connecting plates 317 enclose an accommodating groove 318 parallel to the horizontal sliding groove 312, the rack 313 is disposed on the rotating plate 316 and located in the accommodating groove 318, the transmission member 35 further includes a transmission rod 354 movably disposed in the accommodating groove 318, the rotating shaft 350 extends out of opposite ends of the transmission rod 354 along an axial line of the transmission rod 354, and the transmission rod is disposed along a circumferential direction of the transmission rod 354. In the present embodiment, the first transmission gear 351 and the second transmission gear 354 are disposed along the circumferential direction of the transmission rod 354.

Specifically, the rotating plate 316 includes a base plate 314 and a baffle 315 vertically disposed at an end of the base plate 314 away from the transmission member 35, and the rack 313 is disposed on a front surface of the base plate 314 and extends along a length direction of the horizontal sliding slot 312. The two connecting plates 317 are respectively connected to two opposite sides of the substrate 314 and the baffle 315, and the accommodating groove 318 is enclosed by the two connecting plates 317, the substrate 314 and the baffle 315; the horizontal sliding grooves 312 of the two connecting plates 317 are located on the same plane, and each horizontal sliding groove 312 is communicated with the accommodating groove 318. The front faces of the two connecting plates 317 are on the same plane and constitute the front face 310 of the rotating member 31; the end of the front surface of each connecting plate 317, which is far away from the baffle 315, is provided with an arc surface, the arc surfaces of the two connecting plates 317 are coplanar, and the arc surfaces of the two connecting plates 317 form an arc portion 311 of the rotating member 31. Each rotating member 31 further includes an inclined surface 319 connected to one end of the corresponding arc portion 311 near the connecting member 33; specifically, one end face of each link plate 317 facing the link 33 is provided with an inclined face 319, and the two inclined faces 319 are coplanar. As shown in fig. 10, when the hinge mechanism 30 is in the flat state, the inclined surfaces 319 of the two rotating members 31 enclose an included angle a4, and as shown in fig. 11, when the hinge mechanism 30 is in the bent state, the inclined surfaces 319 of the two rotating members 31 are attached to each other, and the circular arc portions 311 of the two rotating members 31 are combined to form a continuous circular arc-shaped supporting surface.

As shown in fig. 14 and 15, in the present embodiment, the transmission rod 354 of each transmission member 35 is a cylinder, two opposite ends of the outer peripheral surface of the cylinder are respectively provided with the second transmission gears 352, the first transmission gear 351 is located between the two second transmission gears 352, and the first transmission gear 351 rotates at an angle relative to the second transmission gears 352 in the circumferential direction of the transmission rod 354; preferably, an angle between a line connecting the center of the first transmission gear 351 to the axis of the rotating shaft 350 and a line connecting the center of one of the second transmission gears 352 to the axis of the rotating shaft 350 is 90 degrees. The first transmission gear 351 includes a plurality of teeth protruding from the outer circumferential surface of the transmission rod 354, and the plurality of teeth are arranged along the circumferential direction of the transmission rod 354. In this embodiment, the plurality of teeth are arranged less than one turn in the circumferential direction of the driving rod 354, and specifically, the first transmission gear 351 includes three teeth arranged from one end of the second transmission gear 352 toward the opposite side in the circumferential direction of the driving rod 354. Each second transmission gear 352 includes a plurality of concave teeth formed on the outer peripheral surface of the transmission rod 354, and the plurality of concave teeth are arranged along the circumferential direction of the transmission rod 354; in this embodiment, a plurality of the concave teeth are arranged less than one turn in the circumferential direction of the driving rod 354, and specifically, each of the second driving gears 352 includes three concave teeth arranged from one end of the first driving gear 351 toward the opposite side in the circumferential direction of the driving rod 354.

In other embodiments, the first drive gear 351 can be arranged in one revolution along the circumference of the drive rod 354 and the second drive gear 352 can be arranged in one revolution along the circumference of the drive rod 354.

In other embodiments, the first transmission gear 351 may be a plurality of concave teeth arranged on the outer circumferential surface of the transmission rod 354, the plurality of concave teeth are arranged along the circumferential direction of the transmission rod 354, and the rack 313 of the rotating member 31 may be a rack engaged with the first transmission gear 351; the second drive gear 352 may be a plurality of teeth that are formed on the outer periphery of the drive shaft 354.

As shown in fig. 14 and 15, the connecting member 33 further includes a connecting block 333 and two second connecting shafts 335, the connecting block 333 is provided with first connecting shafts 330 adjacent to two ends of the two rotating members 31, respectively, and each first connecting shaft 330 is provided with a connecting gear 332 in a circumferential direction. In this embodiment, the connecting block 333 is substantially a trapezoid block, the connecting block 333 includes a front surface 331 and a back surface facing away from the front surface 331, the length of the front surface 331 is greater than that of the back surface, and two opposite ends of the front surface 331 are respectively provided with an arc surface to prevent the two opposite ends of the front surface of the connecting block 333 from protruding to damage the flexible member 80. Two opposite ends of the connecting block 333 adjacent to the front surface 331 are respectively provided with a first connecting shaft 330, and each first connecting shaft 330 penetrates through the connecting block 333 along a direction parallel to the bending axis of the rotating part 31; two opposite ends of one side of the connecting block 333 adjacent to the back are respectively provided with a second connecting shaft 335, and the two second connecting shafts are spaced in parallel; each second connecting shaft 335 passes through the connecting block 333 in a direction parallel to the axial center line of the first connecting shaft 330. Each first connecting shaft 330 is provided with two spaced connecting gears 332, and the two second transmission gears 352 of each transmission member 35 are respectively meshed with the two corresponding connecting gears 332. In this embodiment, each first connecting shaft 330 is provided with a connecting gear 332 at two opposite sides of the connecting block 333.

As shown in fig. 14 and 15, the hinge mechanism 30 further includes a linkage assembly 36, the linkage assembly 36 is disposed between the two rotating members 31 and the connecting member 33, and the two rotating members 31 are synchronously moved toward or away from the connecting member 33 by the linkage assembly 36. Specifically, when one of the rotating members 31 is bent or flattened relative to the connecting member 33 through the corresponding transmission member 35, the linkage assembly 36 drives the other rotating member 31 to be bent or flattened synchronously through the corresponding transmission member 35, so that the use is convenient.

In other embodiments, it is also possible to operate both rotary parts 31 simultaneously, by means of corresponding transmission parts 35, in a manner such that they are bent or flattened relative to the connecting part 33.

Specifically, the linkage assembly 36 includes at least one linkage member 37 movably disposed on each of the rotation members 31 and a linkage gear set 38 connected between the linkage members 37 of the two rotation members 31, and each linkage member 37 is provided with a first linkage gear 370 engaged with the linkage gear set 38. In this embodiment, each of the rotating members 31 has two spaced and opposite linkage members 37, two opposite sides of the connecting member 33 are respectively provided with a linkage gear set 38, and the two linkage members 37 on the same side of the hinge mechanism 30 are connected by the corresponding linkage gear sets 38. Specifically, the receiving groove 318 of each rotating member 31 is provided with a linking member 37 at two opposite sides of the rack 313, and each rotating member 31 and the corresponding linking member 37 can slide relatively, that is, the linking member 37 is received in the corresponding receiving groove 318 along the horizontal sliding groove 312; during the bending or flattening of the hinge mechanism 30, the link members 37 slide along the horizontal sliding grooves 312 with respect to the rotating members 31 along with the corresponding transmission members 35.

Each linkage piece 37 is provided with a first shaft hole 371 and a second shaft hole 373 which are parallel at intervals, the first linkage gear 370 is arranged along the circumferential direction of the corresponding first shaft hole 371, the end portions of the two first connecting shafts 330 of the connecting piece 33 respectively penetrate through the corresponding first shaft holes 371 and then are accommodated in the corresponding horizontal sliding grooves 312, and the end portions of the rotating shafts 350 of the two transmission pieces 35 respectively penetrate through the corresponding second shaft holes 373 and then are accommodated in the corresponding horizontal sliding grooves 312. Specifically, each link member 37 includes a bar-shaped connecting plate 374, the first shaft hole 371 and the second shaft hole 373 are disposed at two ends of one side of the connecting plate 374, the connecting plate 374 is provided with a receiving hole 376 around the second shaft hole 373, and the receiving hole 376 is used for receiving an end portion of the driving rod 354; a first extension bar 377 is protruded from one end of the connecting plate 374 facing the transmission rod 354 and away from the first link gear 370, and a second extension bar 378 is protruded between the first shaft hole 371 and the second shaft hole 373 from one side of the connecting plate 374 facing the transmission rod 354.

The linkage gear set 38 includes two second linkage gears 381 engaged with each other, and the two second linkage gears 381 are respectively engaged with the first linkage gears 370 of the corresponding linkages 37. Each second linkage gear 370 is rotatably sleeved on the corresponding second connecting shaft 335; specifically, each second linkage gear 381 is provided with a rotation hole 382, and the second connection shaft 335 is inserted into the rotation hole 382 of the second linkage gear 370, so that the second linkage gear 381 can rotate along the second connection shaft 335.

When the hinge mechanism 30 is assembled, the two linkage gear sets 38 are respectively connected to two opposite sides of the connecting member 33, that is, each second linkage gear 381 is sleeved on the corresponding second connecting shaft 335; the two transmission pieces 35 are respectively arranged at two opposite ends of the connecting piece 33, so that the two second transmission gears 352 of each transmission piece 35 are respectively meshed with the corresponding connecting gear 332; the two pairs of linkage members 37 are respectively disposed on two opposite sides of the connecting member 33, and the first shaft hole 371 and the second shaft hole 373 of each linkage member 37 are respectively sleeved on the corresponding first connecting shaft 330 and the corresponding rotating shaft 350, so that two opposite ends of each transmission member 35 are respectively rotatably accommodated in the accommodating holes 376 of the two linkage members 37, and the first linkage gear 370 of each linkage member 37 is engaged with the corresponding second linkage gear 381; the linkage piece 37 and the transmission piece 35 at the two opposite ends of the connecting piece 33 are respectively placed on the two rotating plates 316, so that the first transmission gear 351 of each transmission piece 35 is meshed with the corresponding rack 313; then, the two connecting plates 317 are respectively and fixedly connected to the two opposite sides of each rotating plate 316, so that the two opposite ends of the rotating shaft 350 of the transmission member 35 at the same end of the connecting member 33 and the two opposite ends of the first connecting shaft 330 are respectively and slidably inserted into the horizontal sliding grooves 312 of the two connecting plates 317; at this time, the first extending strips 377 and the second extending strips 378 of the two link members 37 at the same end abut against each other, so that the transmission rod 354 rotates in the space enclosed by the two link members 37, and the transmission member 35 and the link members 37 can slide along the horizontal sliding groove 312 in the corresponding accommodation groove 318.

As shown in fig. 11 to 15, when the hinge mechanism 30 needs to be bent, a bending force is applied to one of the rotating members 31 to rotate the one of the rotating members 31 toward the other rotating member 31, the one of the rotating members 31 rotates relative to the connecting member 33, so that the rack 313 drives the first transmission gear 351 of the corresponding transmission member 35 to rotate, the second transmission gear 352 of the transmission member 35 is engaged with the corresponding connecting gear 332 to rotate, and the transmission member 35 moves toward the other transmission member 35, so that the rotating shaft 350 and the first connecting shaft 330 slide along the horizontal sliding groove 312 toward an end away from the connecting member 33; meanwhile, one of the rotating members 31 rotates towards the other rotating member 31, so that the linkage member 37 on the rotating member 31 rotates along with the rotating member 31, the first linkage gear 370 of the linkage member 37 drives the corresponding second linkage gear 381 to rotate, the second linkage gear 381 drives the other second linkage gear 381 meshed with the second linkage gear 381 to rotate, the other second linkage gear 381 drives the first linkage gear 370 meshed with the other second linkage gear to rotate, so that the corresponding linkage member 37 rotates to drive the second transmission gear 352 of the corresponding transmission member 35 to rotatably mesh with the corresponding connecting gear 332, and the rotating shaft 350 of the transmission member 35 slidably pushes the other rotating member 31 to rotate towards one of the rotating members 31 in the horizontal sliding groove 312, thereby realizing the synchronous bending of the two rotating members 31 and the two transmission members 35. At this time, as shown in fig. 11, the inclined surfaces 319 of the two rotating members 31 are attached to each other, the circular arc portions 311 of the two rotating members 31 are joined to each other and located on the same continuous circular arc support surface, and when the hinge mechanism 30 is spread out, the distance P3 between the opposite end surfaces of the rotating plates 316 of the two rotating members 31 is equal to the distance P4 between the opposite end surfaces of the rotating plates 316 of the two rotating members 31 when the hinge mechanism 30 is bent.

Specifically, when a bending force is applied to one of the rotating members 31 to rotate the one of the rotating members 31 clockwise toward the other rotating member 31, the rack 313 of the one of the rotating members 31 drives the corresponding first transmission gear 351 to rotate clockwise, so that the corresponding transmission member 35 rotates clockwise, and the two second transmission gears 352 on the transmission member 35 are rotatably engaged with the corresponding connecting gear 332, so that the transmission member 35 moves toward the side away from the front surface 331 of the connecting member 33. Because the linkage assembly 36 is arranged between the two rotating parts 31, the clockwise rotation of one of the rotating parts 31 synchronously drives the other rotating part 31 to rotate anticlockwise; specifically, the one rotating member 31 rotates clockwise toward the other rotating member 31, so that the link member 37 on the one rotating member 31 rotates clockwise, the first linkage gear 370 of the linkage member 37 drives the corresponding second linkage gear 381 to rotate counterclockwise, the second linkage gear 381 drives the other second linkage gear 381 engaged with the second linkage gear 381 to rotate clockwise, the other second linkage gear 381 drives the first linkage gear 370 engaged therewith to rotate counterclockwise, so that the corresponding linkage member 37 rotates counterclockwise to drive the corresponding transmission member 35 to rotate counterclockwise, so that the rotating shaft 350 of the transmission member 35 slidably pushes the other rotating member 31 to rotate towards one rotating member 31 counterclockwise in the horizontal sliding slot 312, the second transmission gear 352 of the transmission element 35 is rotatably engaged with the corresponding connecting gear 332, so that the two rotation elements 31 and the two transmission elements 35 are synchronously bent.

When a bending force is applied to one of the rotating members 31 to rotate the one of the rotating members 31 counterclockwise toward the other rotating member 31, the rack 313 of the one of the rotating members 31 drives the corresponding first transmission gear 351 to rotate counterclockwise, so that the corresponding transmission member 35 rotates counterclockwise, and the two second transmission gears 352 on the transmission member 35 engage with the corresponding connecting gear 332 in a counterclockwise rotating manner, so that the transmission member 35 moves toward a side away from the front surface 331 of the connecting member 33. Because the linkage assembly 36 is arranged between the two rotating parts 31, the counterclockwise rotation of one of the rotating parts 31 synchronously drives the other rotating part 31 to rotate clockwise; specifically, the one rotating member 31 rotates counterclockwise toward the other rotating member 31, so that the link member 37 on the one rotating member 31 rotates counterclockwise, the first linkage gear 370 of the linkage member 37 drives the corresponding second linkage gear 381 to rotate clockwise, the second linkage gear 381 drives the other second linkage gear 381 engaged with the second linkage gear 381 to rotate counterclockwise, the other second linkage gear 381 drives the first linkage gear 370 engaged therewith to rotate clockwise, so that the corresponding linkage member 37 rotates clockwise to drive the corresponding transmission member 35 to rotate clockwise, so that the rotating shaft 350 of the transmission member 35 slidably pushes the other rotating member 31 to rotate clockwise towards one of the rotating members 31 in the horizontal sliding slot 312, the second transmission gear 352 of the transmission element 35 is rotatably engaged with the corresponding connecting gear 332, so that the two rotation elements 31 and the two transmission elements 35 are synchronously bent.

When the hinge mechanism 30 in the bent state needs to be flattened, a flattening force is applied to one rotating member 31, so that the other rotating member 31 rotates away from the one rotating member 31, the one rotating member 31 rotates relative to the connecting member 33, the rack 313 drives the first transmission gear 351 of the corresponding transmission member 35 to rotate, the second transmission gear 352 of the transmission member 35 is meshed with the corresponding connecting gear 332 to rotate, and the transmission member 35 moves away from the other transmission member 35, so that the rotating shaft 350 and the first connecting shaft 330 slide along the horizontal sliding groove 312 to one end close to the connecting member 33; meanwhile, one of the rotating members 31 rotates away from the other rotating member 31, so that the linkage member 37 on the rotating member 31 rotates along with the rotating member 31, the first linkage gear 370 of the linkage member 37 drives the corresponding second linkage gear 381 to rotate, the second linkage gear 381 drives the other second linkage gear 381 meshed with the second linkage gear 381 to rotate, the other second linkage gear 381 drives the first linkage gear 370 meshed with the other second linkage gear to rotate, the corresponding linkage member 37 rotates to drive the second transmission gear 352 of the corresponding transmission member 35 to rotatably mesh with the corresponding connecting gear 332, the rotating shaft 350 of the transmission member 35 slidably pushes the other rotating member 31 to rotate away from the one of the rotating members 31 in the horizontal sliding groove 312, and therefore the two rotating members 31 and the two transmission members 35 are synchronously flattened. At this time, as shown in fig. 10, an included angle a4 is formed between the inclined surfaces 319 of the two rotation members 31, the first length value P1 is equal to the sum of the arc lengths of the two arc portions 311, and the distance P3 is equal to the distance P4 when the hinge mechanism 30 is bent.

Specifically, when a flattening force is applied to one of the rotating members 31 to flatten the one of the rotating members 31 by rotating the other rotating member 31 counterclockwise, the rack 313 of the one of the rotating members 31 drives the corresponding first transmission gear 351 to rotate counterclockwise, so that the corresponding transmission member 35 rotates counterclockwise, and the two second transmission gears 352 on the transmission member 35 are rotatably engaged with the corresponding connecting gear 332, so that the transmission member 35 moves to a side close to the front surface 331 of the connecting member 33. Because the linkage assembly 36 is arranged between the two rotating parts 31, the counterclockwise rotation of one of the rotating parts 31 synchronously drives the other rotating part 31 to rotate clockwise; specifically, the one of the rotating members 31 rotates counterclockwise away from the other rotating member 31, causing the link member 37 on the one of the rotating members 31 to rotate counterclockwise, the first linkage gear 370 of the linkage member 37 drives the corresponding second linkage gear 381 to rotate clockwise, the second linkage gear 381 drives the other second linkage gear 381 engaged with the second linkage gear 381 to rotate counterclockwise, the other second linkage gear 381 drives the first linkage gear 370 engaged therewith to rotate clockwise, so that the corresponding linkage member 37 rotates clockwise to drive the corresponding transmission member 35 to rotate clockwise, so that the rotating shaft 350 of the transmission member 35 slidably pushes the other rotating member 31 in the horizontal sliding slot 312 to rotate clockwise towards the side far away from the one rotating member 31, the second transmission gear 352 of the transmission element 35 is rotatably engaged with the corresponding connecting gear 332, so that the two rotary elements 31 and the two transmission elements 35 are synchronously flattened.

When a flattening force is applied to one of the rotating members 31 to flatten the rotating member 31 towards the other rotating member 31 in a clockwise rotation manner, the rack 313 of the one of the rotating members 31 drives the corresponding first transmission gear 351 to rotate clockwise, so that the corresponding transmission member 35 rotates clockwise, and the two second transmission gears 352 on the transmission member 35 are rotatably engaged with the corresponding connecting gear 332, so that the transmission member 35 rotates towards the side close to the front surface 331 of the connecting member 33. Because the linkage assembly 36 is arranged between the two rotating parts 31, the clockwise rotation of one of the rotating parts 31 synchronously drives the other rotating part 31 to rotate anticlockwise; specifically, the one of the rotating members 31 rotates clockwise away from the other rotating member 31, causing the link member 37 on the one of the rotating members 31 to rotate clockwise, the first linkage gear 370 of the linkage member 37 drives the corresponding second linkage gear 381 to rotate counterclockwise, the second linkage gear 381 drives the other second linkage gear 381 engaged with the second linkage gear 381 to rotate clockwise, the other second linkage gear 381 drives the first linkage gear 370 engaged therewith to rotate counterclockwise, so that the corresponding linkage member 37 rotates counterclockwise to drive the corresponding transmission member 35 to rotate counterclockwise, so that the rotating shaft 350 of the transmission member 35 slidably pushes the other rotating member 31 to rotate along the counterclockwise direction towards the side far away from the one rotating member 31 in the horizontal sliding slot 312, the second transmission gear 352 of the transmission element 35 is rotatably engaged with the corresponding connecting gear 332, so that the two rotary elements 31 and the two transmission elements 35 are synchronously flattened.

As shown in fig. 3, when the electronic device 100 is assembled, the two first hinge units 201 are placed side by side, so that the first positioning notches 2017 of the two first hinge units 201 are opposite to each other; the two rotating parts 31 of one hinge mechanism 30 are respectively and fixedly connected into the two first positioning notches 2017; placing the second hinge joint unit 203 on one side of one of the first hinge joint units 201, so that the third positioning notch 2037 of the second hinge joint unit 203 is opposite to the second positioning notch 2018 of the adjacent first hinge joint unit 201; the two rotating members 31 of one of the hinge mechanisms 30 are respectively and fixedly connected to the third positioning indentation 2037 and the second positioning indentation 2018; the third hinge unit 205 is placed on one side of the other first hinge unit 201, so that the fourth positioning notch 2057 of the third hinge unit 205 is opposite to the second positioning notch 2018 of the adjacent first hinge unit 201, and the two rotating members 31 of one hinge mechanism 30 are respectively and fixedly connected in the fourth positioning notch 2057 and the second positioning notch 2018. The first hinge joint unit 201, the second hinge joint unit 203 and the third hinge joint unit 205 are flattened, at this time, the front surface of the first hinge joint unit 201, the front surface of the second hinge joint unit 203, the front surface of the third hinge joint unit 205 and the front surface of the hinge mechanism 30 are positioned on the same plane, and the back surface of the flexible member 80 is attached to the plane.

Referring to fig. 16 to 24, the folding device 20 can be unfolded or folded, and the flexible member 80 covering the front surface of the folding device 20 is unfolded or folded along with the folding device 20. Specifically, since at least one hinge mechanism 30 is disposed between two adjacent first hinge joint units 201, between the second hinge joint unit 203 and the corresponding first hinge joint unit 201, and between the third hinge joint unit 205 and the corresponding first hinge joint unit 201, a bending or flattening method between the two first hinge joint units 201, a bending or flattening method between the second hinge joint unit 203 and the corresponding first hinge joint unit 201, and a bending or flattening method between the third hinge joint unit 205 and the corresponding first hinge joint unit 201 are the same, and the achievable effects are also the same. Only the bend between the third joint unit 205 and the corresponding first joint unit 201 will be described in detail here:

a bending force is applied to the third hinge unit 205, so that the third hinge unit 205 rotates toward the corresponding first hinge unit 201, the third hinge unit 205 drives the rotating member 31 fixedly connected in the fourth positioning notch 2057 to rotate, the rack 313 of the rotating member 31 drives the corresponding first transmission gear 351 to rotate, so that the corresponding transmission member 35 rotates, and the two second transmission gears 352 on the transmission member 35 are rotatably engaged with the corresponding connecting gear 332, so that the transmission member 35 rotates toward one side of the first hinge unit 201. Because the linkage assembly 36 is arranged between the two rotating members 31, the rotation of the rotating member 31 on the third hinge unit 205 synchronously drives the rotating member 31 on the corresponding first hinge unit 201 to rotate; specifically, the rotating member 31 of the third hinge unit 205 rotates toward the corresponding rotating member 31 of the first hinge unit 201, so that the linkage member 37 of the rotating member 31 of the third hinge unit 205 rotates, the first linkage gear 370 of the linkage member 37 drives the corresponding second linkage gear 381 to rotate, the second linkage gear 381 drives another second linkage gear 381 engaged with the second linkage gear 381 to rotate, the other second linkage gear 381 drives the first linkage gear 370 engaged therewith to rotate, so that the corresponding linkage member 37 rotates to drive the corresponding transmission member 35 to rotate, so that the rotating shaft 350 of the transmission member 35 slidably pushes the rotating member 31 to rotate in the horizontal sliding slot 312 of the rotating member 31 on the first hinge unit 201, the second transmission gear 352 of the transmission member 35 on the first hinge unit 201 rotatably engages with the corresponding connecting gear 332, thereby realizing synchronous bending between the two rotating members 31 and between the first hinge unit 201 and the third hinge unit 205. Similarly, the rotation of the first hinge unit 201 connected to the third hinge unit 205 drives another first hinge unit 201 to rotate, so that the another first hinge unit 201 rotates relative to the second hinge unit 203, thereby realizing the linkage bending of the whole folding device 20, and the flexible member 80 is also bent along with the folding device 20, so as to realize the bending of the electronic device 100 through the folding device 20; since the length of the front surface of each hinge mechanism 30 on the folding device 20 is kept constant during the bending process, the length of the front surface of the folding device 20 is also kept constant during the bending process, namely, the folding device 20 has no accumulated tolerance, and a screen compensation slide block is not required to be arranged for tolerance compensation.

In other usage manners, a bending force may be simultaneously applied to the third hinge unit 205 and the first hinge unit 201 to rotate the third hinge unit 205 and the corresponding first hinge unit 201 in the opposite directions, and since the hinge mechanism 30 between the third hinge unit 205 and the first hinge unit 201 has the linkage mechanism 36, that is, the two rotating members 31 of the hinge mechanism 30 are connected by the linkage mechanism 36, the first hinge unit 201 and the third hinge unit 205 together drive each transmission member 35 to rotate in the direction of approaching each other, so that the two rotating members 31 approach each other, and thus the third hinge unit 205 and the first hinge unit 201 simultaneously approach each other to bend the folding device 20 in a linkage manner, so as to bend the electronic device 100.

Only the flattening between the third hinge unit 205 and the corresponding first hinge unit 201 is described in detail here: the third hinge unit 205 applies a flattening force to rotate the third hinge unit 205 to a side away from the corresponding first hinge unit 201, the third hinge unit 205 drives the rotating member 31 fixedly connected in the fourth positioning notch 2057 to rotate to a side away from the first hinge unit 201, the rack 313 of the rotating member 31 drives the corresponding first transmission gear 351 to rotate, so that the corresponding transmission member 35 rotates, and the two second transmission gears 352 on the transmission member 35 are rotatably engaged with the corresponding connecting gear 332, so that the transmission member 3 rotates to a side away from the first hinge unit 201. Because the linkage assembly 36 is arranged between the two rotating pieces 31, the flattening of the rotating piece 31 on the third hinge unit 205 synchronously drives the corresponding rotating piece 31 on the first hinge unit 201 to flatten; specifically, the rotating member 31 of the third hinge unit 205 rotates away from the corresponding rotating member 31 of the first hinge unit 201, so that the linkage member 37 of the rotating member 31 of the third hinge unit 205 rotates, the first linkage gear 370 of the linkage member 37 drives the corresponding second linkage gear 381 to rotate, the second linkage gear 381 drives another second linkage gear 381 engaged with the second linkage gear 381 to rotate, the other second linkage gear 381 drives the first linkage gear 370 engaged therewith to rotate, so that the corresponding linkage member 37 rotates to drive the corresponding transmission member 35 to rotate, so that the rotating shaft 350 of the transmission member 35 slidably pushes the rotating member 31 to rotate in the horizontal sliding slot 312 of the rotating member 31 on the first hinge unit 201, the second transmission gear 352 of the transmission member 35 on the first hinge unit 201 rotatably engages with the corresponding connecting gear 332, thereby achieving synchronous flattening between the two rotating pieces 31 and between the first hinge unit 201 and the third hinge unit 205. Similarly, the rotation of the first hinge unit 201 connected to the third hinge unit 205 drives another first hinge unit 201 to rotate, so that the another first hinge unit 201 rotates relative to the second hinge unit 203, thereby realizing the linkage and flattening of the whole folding device 20, and the flexible member 80 is also flattened along with the folding device 20 and is flattened by the folding device 20 to realize the flattening of the electronic device 100; since the length of the front surface of each hinge mechanism 30 on the folding device 20 is kept constant in the flattening process, the length of the front surface of the folding device 20 is also kept constant in the flattening process, namely, the folding device 20 has no accumulated tolerance, and a screen compensation slide block is not required to be arranged for tolerance compensation.

In other usage manners, a flattening force may be simultaneously applied to the third hinge unit 205 and the first hinge unit 201 to rotate the third hinge unit 205 and the corresponding first hinge unit 201 together in opposite directions, and since the hinge mechanism 30 between the third hinge unit 205 and the first hinge unit 201 has the linkage mechanism 36, that is, the two rotating members 31 of the hinge mechanism 30 are connected by the linkage mechanism 36, the first hinge unit 201 and the third hinge unit 205 together drive each transmission member 35 to rotate in a direction away from each other, so that the two rotating members 31 are away from each other, and thus the third hinge unit 205 and the first hinge unit 201 are simultaneously away from each other to flatten the folding device 20 in a linkage manner, so as to flatten the electronic device 100.

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. The utility model provides a hinge mechanism, its characterized in that includes two rotation pieces, is located two connecting pieces that rotate between the piece to and connect in each rotation piece and the driving medium between the connecting piece, two rotate the piece through corresponding driving medium for the connecting piece is close to or keeps away from, two when rotating the piece and buckling relatively, two rotate the piece and pass through driving medium and connecting piece and remove in opposite directions.

2. A hinge mechanism as recited in claim 1, wherein each of the drive members is rotatably coupled to the coupling member, and wherein rotation of the drive member relative to the coupling member causes the corresponding rotating member to move relative to the coupling member.

3. A hinge mechanism as claimed in claim 2, wherein each transmission member is rotatably engaged with the connecting member and the corresponding rotating member, the transmission member being adapted to convert rotation of the transmission member relative to the connecting member into sliding movement of the transmission member relative to the rotating member.

4. A hinge mechanism as recited in claim 1, wherein the two rotating members are symmetrical about a center of the connecting member, each rotating member including a front surface including an arc portion adjacent the connecting member, and wherein in the flattened state of the hinge mechanism, a first length value between sides of the arc portions of the two rotating members adjacent respective sides of the corresponding driving members is equal to a sum of arc lengths of the two arc portions.

5. A hinge mechanism as recited in claim 4, wherein, in the folded state of the hinge mechanism, two of the arc portions are combined to form an arc surface, and an arc length of the arc surface is a second length value equal to the first length value.

6. A hinge mechanism as recited in claim 5, wherein each of the rotating members includes an inclined surface connected to a corresponding one of the circular arc portions adjacent to the connecting member, the inclined surfaces of the two rotating members enclosing an included angle when the hinge mechanism is in the flat state, and the inclined surfaces of the two rotating members being attached to each other when the hinge mechanism is in the bent state.

7. A hinge mechanism as recited in claim 6, wherein the angle between the inclined surfaces of the two rotating members has a value greater than 0 degrees and less than 180 degrees when the hinge mechanism is in the flattened state.

8. A hinge mechanism as claimed in claim 1, wherein each of the rotary members is slidably connected to a respective one of the drive members, and opposite ends of the link member are rotatably connected to respective ones of the drive members; work as the hinge mechanism switches to when bending the state from the exhibition flat state, each rotates the relative driving medium that corresponds to and is close to the direction of connecting piece slides, each rotates the driving medium that the drive corresponds and rotates, and drives the connecting piece is relative the driving medium rotates, until two the front amalgamation that rotates the piece is continuous holding surface.

9. The hinge mechanism as claimed in claim 8, wherein each of the rotating members is coupled to the corresponding driving member by a rack gear, each of the driving members is coupled to the corresponding connecting member by a gear, the rotating members have horizontal sliding grooves, the connecting member includes a first connecting shaft, each of the driving members includes a rotating shaft, and at least one of the first connecting shaft and the rotating shaft is received in the horizontal sliding groove.

10. A hinge mechanism as recited in claim 9, wherein each of the rotating members has a rack gear along a length of the horizontal sliding slot, each of the transmission members has a drive gear partially engaged with the rack gear, the connecting member includes a connecting gear engaged with another portion of the drive gear, and the rotating members slide relative to the transmission members such that the rack gear rotates the drive gear, and the drive gear rotates relative to the connecting gear to rotate the connecting member relative to the transmission members.

11. The hinge mechanism as claimed in claim 10, wherein each of the rotation members includes a rotation plate and two connection plates disposed at opposite sides of the rotation plate, the rotation plate and the two connection plates define a receiving slot parallel to the horizontal sliding slot, the rack is disposed on the rotation plate and located in the receiving slot, the transmission member further includes a transmission rod movably received in the receiving slot, the rotation shaft extends out of opposite ends of the transmission rod along an axial line of the transmission rod, and the transmission gear is disposed along a circumferential direction of the transmission rod.

12. A hinge mechanism as recited in claim 10, wherein the link member further includes link blocks, the link blocks being provided with the first link shafts adjacent to both end portions of the two rotation members, respectively, each of the first link shafts being circumferentially provided with the link gear.

13. The hinge mechanism according to claim 10, wherein the transmission gears include a first transmission gear engaged with the rack and a second transmission gear engaged with the connection gear, the first transmission gear and the second transmission gear are spaced apart in a length direction of the transmission member, two connection gears are provided at a spacing on each first connecting shaft, two second transmission gears engaged with the two connection gears, respectively, are provided on each transmission member, and the first transmission gear is located between the two second transmission gears.

14. A hinge mechanism as recited in claim 9, further comprising a linkage assembly disposed between the two rotating members and the connecting member, the two rotating members being synchronously moved toward and away from the connecting member by the linkage assembly.

15. A hinge mechanism as recited in claim 14, wherein the linkage assembly includes at least one linkage member movably disposed on each of the rotary members and a linkage gear set coupled between the linkage members of the two rotary members, each linkage member being provided with a first linkage gear engaged with the linkage gear set.

16. A hinge mechanism as recited in claim 14, wherein each of the rotating members is slidable relative to the corresponding one of the linkage members, the linkage members sliding with the corresponding one of the driving members relative to the rotating members during bending or flattening of the hinge mechanism.

17. The hinge mechanism as claimed in claim 15, wherein each of the link members has first and second shaft holes spaced apart from each other in parallel, the first link gear is disposed along a circumferential direction of the corresponding first shaft hole, ends of the two first connecting shafts of the connecting member are received in the corresponding horizontal sliding grooves after passing through the corresponding first shaft holes, respectively, and ends of the rotating shafts of the two transmission members are received in the corresponding horizontal sliding grooves after passing through the two second shaft holes, respectively.

18. A hinge mechanism as recited in claim 15, wherein the linkage gear set includes two second linkage gears that are engaged with each other, the two second linkage gears being engaged with the first linkage gear of the corresponding linkage member, respectively; the connecting piece is still including being located two second connecting axle between the first connecting axle, two the parallel interval of second connecting axle, two the second linkage gear is rotationally overlapped and is located two on the second connecting axle.

19. A folding device, characterized in that the folding device comprises at least two hinge units and a hinge mechanism according to any one of claims 1-18, which hinge mechanism is connected between adjacent hinge units, by means of which hinge mechanism the adjacent hinge units are bent or flattened.

20. An electronic device, comprising the folding device according to claim 19, and a flexible member covering a front surface of the folding device, wherein the flexible member is bent or unfolded in accordance with the bending or unfolding of the folding device.