Hinge assembly and electronic device

Abstract

The hinge assembly comprises a plurality of hinge joints connected in sequence, two adjacent hinge joints are detachably connected, and the plurality of hinge joints rotate towards the same side in the thickness direction. The hinge assembly is flexible in rotation and convenient to assemble and maintain.

Description

Technical Field

[0001] This invention relates to the field of flexible component support technology, specifically to a hinge assembly and an electronic device. Background Technology

[0002] With the development of display equipment, a type of bendable electronic display screen, namely flexible display screen, has emerged. Compared with traditional display devices, flexible display screens have advantages such as foldability and are widely favored by consumers. Existing flexible display screens are generally supported by hinges, and the flexible display screen bends or flattens with the hinges. Summary of the Invention

[0003] This invention is based on the inventor's discoveries and understanding of the following facts and problems:

[0004] In related technologies, hinges are connected by welding, and even minor welding deformation can cause movement to become sluggish. Furthermore, the welded connection method lacks detachability, increasing the difficulty of parts repair and subsequent maintenance.

[0005] This invention aims to at least partially solve one of the technical problems in related art. To this end, embodiments of this invention provide a hinge assembly that is flexible in rotation and easy to assemble and maintain.

[0006] This invention also proposes an electronic device.

[0007] The hinge assembly of this invention includes a plurality of hinge joints connected in sequence, two adjacent hinge joints are detachably connected and two adjacent hinge joints rotate relative to each other, and the plurality of hinge joints rotate toward the same side in their thickness direction.

[0008] The hinge assembly according to an embodiment of the present invention is flexible in rotation and easy to assemble and maintain.

[0009] In some embodiments, the hinge includes a first hinge, a second hinge, a third hinge, a fourth hinge, and a fifth hinge connected in sequence. The first hinge rotates about a first virtual axis relative to the second hinge, the second hinge rotates about a second virtual axis relative to the third hinge, the fourth hinge rotates about a third virtual axis relative to the third hinge, and the fifth hinge rotates about a fourth virtual axis relative to the fourth hinge. The first, second, third, and fourth virtual axes are parallel to each other.

[0010] In some embodiments, the hinge assembly further includes a first connecting member and a second connecting member, the first connecting member being disposed between the first hinge joint and the third hinge joint to connect the first hinge joint, the second hinge joint and the third hinge joint, and the second connecting member being disposed between the third hinge joint and the fifth hinge joint to connect the third hinge joint, the fourth hinge joint and the fifth hinge joint.

[0011] In some embodiments, the first connecting component includes a first positioning member and a first connecting portion disposed on the third hinge joint, and the second connecting component includes a second positioning member and a second connecting portion disposed on the third hinge joint. The first positioning member is connected to the second hinge joint, and the second positioning member is connected to the fourth hinge joint. The first connecting portion is arranged adjacent to the second hinge joint, and the second connecting portion is arranged adjacent to the fourth hinge joint. The first connecting portion is provided with a first sliding groove, and the first positioning member is provided with a first slider on one side adjacent to the third hinge joint. The first slider is disposed in the first sliding groove and is movable within the first sliding groove. The second connecting portion is provided with a second sliding groove, and the second positioning member is provided with a second slider on one side adjacent to the third hinge joint. The second slider is disposed in the second sliding groove and is movable within the second sliding groove.

[0012] In some embodiments, the first positioning member is provided with a third slider, the third slider being arranged at a distance from the first slider to define a first space, the first connecting portion being located within the first space, the third slider being provided with a third groove, the first connecting portion being disposed within the third groove and movable within the third groove, and the second positioning member is provided with a fourth slider, the fourth slider being arranged at a distance from the second slider to define a second space, the second connecting portion being located within the second space, the fourth slider being provided with a fourth groove, the second connecting portion being disposed within the fourth groove and movable within the fourth groove.

[0013] In some embodiments, the first slider is provided with a first stop portion, the first connecting portion is provided with a first limiting portion, the second slider is provided with a second stop portion, the second connecting portion is provided with a second limiting portion, and the hinge assembly has an unfolded position and a folded position. When the hinge assembly is in the unfolded position, the first stop portion contacts the first limiting portion to limit the positions of the second hinge joint and the third hinge joint, and the second stop portion contacts the second limiting portion to limit the positions of the third hinge joint and the fourth hinge joint.

[0014] In some embodiments, the first connecting component further includes a third connecting portion disposed on the first hinge joint and a fifth slider disposed on the first positioning member. The third connecting portion is arranged adjacent to the second hinge joint and has a fifth sliding groove. The fifth slider is arranged adjacent to the first hinge joint and is disposed within the fifth sliding groove, and is movable within the fifth sliding groove. The second connecting component further includes a fourth connecting portion disposed on the fifth hinge joint and a sixth slider disposed on the second positioning member. The fourth connecting portion is arranged adjacent to the fourth hinge joint and has a sixth sliding groove. The sixth slider is arranged adjacent to the fifth hinge joint and is disposed within the sixth sliding groove, and is movable within the sixth sliding groove.

[0015] In some embodiments, the first positioning member is further provided with a seventh slider, the seventh slider being arranged at a distance from the fifth slider to define a third space, the third connecting portion being located within the third space, the seventh slider being provided with a seventh sliding groove, the third connecting portion being disposed within the seventh sliding groove, and the third connecting portion being movable within the seventh sliding groove; the second positioning member is provided with an eighth slider, the eighth slider being arranged at a distance from the sixth slider to define a fourth space, the fourth connecting portion being located within the fourth space, the eighth slider being provided with an eighth sliding groove, the fourth connecting portion being disposed within the eighth sliding groove, and the fourth connecting portion being movable within the eighth sliding groove.

[0016] In some embodiments, the fifth slider is provided with a third stop, the third connecting portion is provided with a third limiting portion, the sixth slider is provided with a fourth stop, the fourth connecting portion is provided with a fourth limiting portion, and the hinge assembly has an unfolded position and a folded position. When the hinge assembly is in the unfolded position, the third stop and the third limiting portion contact each other to limit the positions of the first hinge joint and the second hinge joint, and the fourth stop and the fourth limiting portion contact each other to limit the positions of the fourth hinge joint and the fifth hinge joint.

[0017] In some embodiments, the number of the first connecting member and the number of the second connecting member are both multiple and the same. The multiple first connecting members are arranged at intervals in the length direction of the hinge, and the multiple second connecting members are arranged at intervals in the length direction of the hinge, and the multiple first connecting members and the multiple second connecting members correspond one-to-one.

[0018] In some embodiments, the hinge assembly further includes a third connecting member and a fourth connecting member, the third connecting member being disposed between the first hinge joint and the third hinge joint, the fourth connecting member being disposed between the third hinge joint and the fifth hinge joint, the third connecting member and the first connecting member being spaced apart in the length direction of the hinge joint, and the fourth connecting member and the second connecting member being spaced apart in the length direction of the hinge joint.

[0019] In some embodiments, the third connecting member includes a first connecting member and a second connecting member. The first connecting member includes a first gear portion and a first sliding portion connected in sequence. The first gear portion is connected to the second hinge joint and is rotatable relative to the second hinge joint. The first sliding portion is connected to the first hinge joint and is movable relative to the first hinge joint. The second connecting member includes a second gear portion and a second sliding portion connected in sequence. The second gear portion is connected to the second hinge joint and is rotatable relative to the second hinge joint. The second sliding portion is connected to the third hinge joint and is movable relative to the third hinge joint. The first gear portion and the second gear portion mesh with each other.

[0020] In some embodiments, the first hinge is provided with a ninth slide groove, the first sliding part is disposed in the ninth slide groove and is movable in the ninth slide groove, the third hinge is provided with a tenth slide groove, the second sliding part is disposed in the tenth slide groove and is movable in the tenth slide groove.

[0021] In some embodiments, the fourth connecting member includes a third connecting member and a fourth connecting member. The third connecting member includes a third gear portion and a third sliding portion connected in sequence. The third gear portion is connected to the fourth hinge joint and is rotatable relative to the fourth hinge joint. The third sliding portion is connected to the third hinge joint and is movable relative to the third hinge joint. The fourth connecting member includes a fourth gear portion and a fourth sliding portion connected in sequence. The fourth gear portion is connected to the third hinge joint and is rotatable relative to the third hinge joint. The fourth sliding portion is connected to the fifth hinge joint and is movable relative to the fifth hinge joint. The third gear portion and the fourth gear portion mesh with each other.

[0022] In some embodiments, the third hinge joint is provided with an eleventh sliding groove, the third sliding part is disposed in the eleventh sliding groove and is movable in the eleventh sliding groove, the fifth hinge joint is provided with a twelfth sliding groove, the fourth sliding part is disposed in the twelfth sliding groove and is movable in the twelfth sliding groove.

[0023] In some embodiments, there are multiple third connecting members and multiple fourth connecting members, with the multiple third connecting members arranged at intervals along the length direction of the hinge, and the multiple third connecting members and multiple fourth connecting members corresponding one-to-one.

[0024] In some embodiments, the hinge assembly further includes a first synchronization component and a second synchronization component, the first synchronization component being disposed between the first hinge joint and the third hinge joint, the second synchronization component being disposed between the third hinge joint and the fifth hinge joint, the first synchronization component being spaced apart from the first connecting component and the third connecting component in the length direction of the hinge joint, and the second synchronization component being spaced apart from the second connecting component and the fourth connecting component.

[0025] In some embodiments, the first synchronization component includes a first rotating shaft, a first elastic element, and a fifth connecting member. The first rotating shaft is connected to the third hinge joint and is rotatable relative to the third hinge joint. The first elastic element is sleeved on the first rotating shaft. One end of the fifth connecting member is connected to the first rotating shaft, and the other end of the fifth connecting member is connected to the first hinge joint. The end of the fifth connecting member connected to the first hinge joint is movable relative to the first hinge joint. The second synchronization component includes a second rotating shaft, a second elastic element, and a sixth connecting member. The second rotating shaft is connected to the third hinge joint and is rotatable relative to the third hinge joint. The second rotating shaft and the first rotating shaft are spaced apart in the width direction of the hinge joint. The second elastic element is sleeved on the second rotating shaft. One end of the sixth connecting member is connected to the second rotating shaft, and the other end of the sixth connecting member is connected to the fifth hinge joint. The end of the sixth connecting member connected to the fifth hinge joint is movable relative to the fifth hinge joint.

[0026] In some embodiments, the fifth connector includes a fifth sliding portion and a fifth gear portion, the fifth gear portion being connected to the first rotating shaft; the sixth connector includes a sixth sliding portion and a sixth gear portion, the sixth gear portion being connected to the second rotating shaft; the first hinge joint is provided with a thirteenth sliding groove, the fifth sliding portion is disposed in the thirteenth sliding groove and is movable within the thirteenth sliding groove; the fifth hinge joint is provided with a fourteenth sliding groove, the sixth sliding portion is disposed in the fourteenth sliding groove and is movable within the fourteenth sliding groove.

[0027] In some embodiments, the second rotating shaft is arranged parallel to the first rotating shaft.

[0028] In some embodiments, there are multiple first synchronization components and multiple second synchronization components. Multiple first synchronization components are arranged at intervals along the length direction of the hinge, and multiple second synchronization components are arranged at intervals along the length direction of the hinge. The multiple first synchronization components and multiple second synchronization components correspond one-to-one.

[0029] In some embodiments, the hinge assembly further includes a support member, which includes a first support plate, a second support plate, and a third support plate. The first support plate and the second support plate are arranged at intervals along the length of the hinge joint. The third support plate is disposed between the first support plate and the second support plate. The hinge joint is located between the first support plate and the second support plate. One end of the third hinge joint is connected to the first support plate, and the other end of the third hinge joint is connected to the second support plate.

[0030] In some embodiments, the hinge assembly further includes a first cover plate and a second cover plate, the first cover plate and the second cover plate being respectively connected to the support member, and the first cover plate and the second cover plate being rotatable relative to the support member, the first cover plate and the second cover plate being arranged at intervals in the width direction of the hinge.

[0031] In some embodiments, the hinge assembly has a first connecting hole and a second connecting hole on the first support plate, the first connecting hole and the second connecting hole being arranged at intervals in the width direction of the hinge joint, a first connecting post on the first cover plate being disposed in the first connecting hole to allow the first cover plate to rotate relative to the support member, and a second connecting post on the second cover plate being disposed in the second connecting hole to allow the second cover plate to rotate relative to the support member.

[0032] In some embodiments, the first hinge joint is provided with a fifteenth sliding groove, the first cover plate is provided with a third connecting post, the third connecting post is disposed in the fifteenth sliding groove and is movable in the fifteenth sliding groove, the fifth hinge joint is provided with a sixteenth sliding groove, the second cover plate is provided with a fourth connecting post, the fourth connecting post is disposed in the sixteenth sliding groove and is movable in the sixteenth sliding groove.

[0033] In some embodiments, the third support plate is provided with a seventeenth slide groove and an eighteenth slide groove, the seventeenth slide groove and the eighteenth slide groove are arranged at intervals in the width direction of the hinge, the first cover plate is provided with an eighth slider, the eighth slider is disposed in the seventeenth slide groove and is movable in the seventeenth slide groove, and the second cover plate is provided with a ninth slider, the ninth slider is disposed in the eighteenth slide groove and is movable in the eighteenth slide groove.

[0034] An electronic device according to an embodiment of the present invention includes a hinge assembly as described in any of the foregoing embodiments.

[0035] The electronic device according to embodiments of the present invention is flexible in rotation and easy to assemble and maintain. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the unfolded state of the hinge assembly according to an embodiment of the present invention.

[0037] Figure 2 This is a schematic diagram of the folded state of the hinge assembly according to an embodiment of the present invention.

[0038] Figure 3 yes Figure 2 A cross-sectional view of the hinge assembly shown.

[0039] Figure 4 This is an exploded view of the hinge assembly according to an embodiment of the present invention.

[0040] Figure 5 This is a schematic diagram of the hinge assembly according to an embodiment of the present invention.

[0041] Figure 6 yes Figure 5 A magnified view of a portion of region A in the middle.

[0042] Figure 7 yes Figure 6 An exploded view of the hinge assembly shown.

[0043] Figure 8 yes Figure 5 A magnified view of a portion of region B in the middle.

[0044] Figure 9 yes Figure 8 An exploded view of the hinge assembly shown.

[0045] Figure 10 This is a rear view of the hinge assembly according to an embodiment of the present invention.

[0046] Figure 11 yes Figure 10 A magnified view of a portion of region A in the middle.

[0047] Figure 12 yes Figure 10 A magnified view of a portion of region B in the middle.

[0048] Figure 13 yes Figure 10 A magnified view of a portion of region C.

[0049] Figure 14 yes Figure 5 A magnified view of a portion of region C.

[0050] Figure label:

[0051] Hinge 100,

[0052] First hinge 10, ninth slide 101, thirteenth slide 102, fifteenth slide 103, second hinge 20, third hinge 30, tenth slide 301, eleventh slide 302, fourth hinge 40, fifth hinge 50, twelfth slide 501, fourteenth slide 502, sixteenth slide 503

[0053] First connecting component 1, first positioning component 11, first slider 111, first stop 1111, third slider 112, third slide groove 1121, seventh slider 113, seventh slide groove 1131, first connecting part 12, first slide groove 121, first limiting part 122, third connecting part 13, fifth slide groove 131, third limiting part 132, fifth slider 14, third stop 141.

[0054] The components are: second connecting part 2, second positioning part 21, second slider 211, second stop part 2111, second connecting part 22, second slide groove 221, second limiting part 222, fourth connecting part 24, sixth slide groove 241, fourth limiting part 242, sixth slider 25, and fourth stop part 251.

[0055] The third connecting component 3, the first connecting member 31, the first gear part 311, the first sliding part 312, the second connecting member 32, the second gear part 321, and the second sliding part 322 are also included.

[0056] Fourth connecting component 4, third connecting member 41, third gear part 411, third sliding part 412, fourth connecting member 42, fourth gear part 421, fourth sliding part 422.

[0057] First synchronizing component 5, first rotating shaft 51, first elastic element 52, fifth connecting component 53, fifth sliding part 531, fifth gear part 532.

[0058] The components include: a second synchronizing component 6, a second rotating shaft 61, a second elastic element 62, a sixth connecting component 63, a sixth sliding part 631, and a sixth gear part 632.

[0059] Support member 7, first support plate 71, first connecting hole 711, second support plate 72, third support plate 73, seventeenth sliding groove 731.

[0060] First cover plate 8, first connecting post 81, third connecting post 82, eighth slider 83.

[0061] Second cover plate 9. Detailed Implementation

[0062] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0063] The hinge assembly of this invention includes a plurality of hinge joints 100 connected in sequence. Adjacent hinge joints 100 are detachably connected and can rotate relative to each other. The plurality of hinge joints 100 are oriented in their thickness direction (e.g., ...). Figure 1 Rotate on the same side (inside or outside direction as shown).

[0064] Specifically, such as Figure 1 As shown, multiple hinges 100 are connected sequentially from left to right. Two adjacent hinges 100 are detachably connected and can rotate relative to each other. Multiple hinges 100 rotate outward.

[0065] According to the hinge assembly of the present invention, the hinge joints 100 are connected by a detachable connection, which avoids deformation of the hinge joints 100 caused by welding, improves the flexibility of hinge rotation, avoids loosening of the hinge caused by bolt connection, improves the accuracy and stability of hinge rotation, and the detachable connection between the hinge joints 100 facilitates the assembly and subsequent maintenance of the hinge assembly.

[0066] In some embodiments, the hinge 100 includes a first hinge 10, a second hinge 20, a third hinge 30, a fourth hinge 40, and a fifth hinge 50 connected in sequence. The first hinge 10 rotates about a first virtual axis relative to the second hinge 20, the second hinge 20 rotates about a second virtual axis relative to the third hinge 30, the fourth hinge 40 rotates about a third virtual axis relative to the third hinge 30, and the fifth hinge 50 rotates about a fourth virtual axis relative to the fourth hinge 40. The first virtual axis, the second virtual axis, the third virtual axis, and the fourth virtual axis are parallel to each other.

[0067] Specifically, such as Figure 1 and Figure 2 As shown, the third hinge 30 is a fixed hinge 100, meaning the third hinge 30 is fixed in place. The first hinge 10 and the second hinge 20 are located to the left of the first hinge 10, and the fourth hinge 40 and the fifth hinge 50 are located to the right of the third hinge 30. The first hinge 10, the second hinge 20, the third hinge 30, the fourth hinge 40, and the fifth hinge 50 are arranged parallel to each other.

[0068] The structure and dimensions of the first hinge 10 are the same as those of the fifth hinge 50, and the structure and dimensions of the second hinge 20 are the same as those of the fourth hinge 40. The lengths of the first hinge 10, the second hinge 20, the third hinge 30, the fourth hinge 40, and the fifth hinge 50 are all the same.

[0069] The hinge assembly of this invention, by setting a first hinge 10, a second hinge 20, a third hinge 30, a fourth hinge 40 and a fifth hinge 50, can improve the flexibility of the hinge assembly rotation and can also perform length compensation during the hinge rotation process.

[0070] In some embodiments, the hinge assembly further includes a first connecting member 1 and a second connecting member 2. The first connecting member 1 is disposed between the first hinge joint 10 and the third hinge joint 30 to connect the first hinge joint 10, the second hinge joint 20 and the third hinge joint 30. The second connecting member 2 is disposed between the third hinge joint 30 and the fifth hinge joint 50 to connect the third hinge joint 30, the fourth hinge joint 40 and the fifth hinge joint 50.

[0071] Specifically, such as Figure 1 , Figure 4 and Figure 5 As shown, the first connecting component 1 is located on the left side of the third hinge 30. The left side of the first connecting component 1 is detachably connected to the first hinge 10, and the right side of the first connecting component 1 is detachably connected to the left side of the third hinge 30. The second connecting component 2 is located on the right side of the third hinge 30. The left side of the second connecting component 2 is detachably connected to the right side of the third hinge 30, and the right side of the second connecting component 2 is detachably connected to the left side of the fifth hinge 50.

[0072] The hinge assembly of this invention connects the first hinge joint 10, the second hinge joint 20 and the third hinge joint 30 through the first connecting component 1, and connects the third hinge joint 30, the fourth hinge joint 40 and the fifth hinge joint 50 through the second connecting component 2, thereby realizing the detachable connection of the five hinge joints 100, improving the flexibility and accuracy of the hinge assembly rotation, and also improving the synchronization and stability of the hinge assembly.

[0073] In some embodiments, the first connecting member 1 includes a first positioning member 11 and a first connecting portion 12 disposed on the third hinge joint 30, and the second connecting member 2 includes a second positioning member 21 and a second connecting portion 22 disposed on the third hinge joint 30. The first positioning member 11 is connected to the second hinge joint 20, the second positioning member 21 is connected to the fourth hinge joint 40, the first connecting portion 12 is arranged adjacent to the second hinge joint 20, and the second connecting portion 22 is arranged adjacent to the fourth hinge joint 40.

[0074] Specifically, such as Figure 1 , Figure 4 and Figure 5As shown, the first positioning member 11 is detachably mounted on the second hinge joint 20, and the first connecting part 12 is located at the left end of the third hinge joint 30. It should be noted that the first connecting part 12 is integrally formed with the third hinge joint 30. The second positioning member 21 is detachably mounted on the fourth hinge joint 40, and the second connecting part 22 is located at the right end of the third hinge joint 30. It should be noted that the second connecting part 22 is integrally formed with the third hinge joint 30.

[0075] The first connecting part 12 is provided with a first sliding groove 121, and the first positioning member 11 is provided with a first slider 111 on the side adjacent to the third hinge 30. The first slider 111 is located in the first sliding groove 121 and is movable within the first sliding groove 121. The second connecting part 22 is provided with a second sliding groove 221, and the second positioning member 21 is provided with a second slider 211 on the side adjacent to the third hinge 30. The second slider 211 is located in the second sliding groove 221 and is movable within the second sliding groove 221.

[0076] For example, the first slider 111 is integrally formed with the first positioning member 11, and the second slider 211 is integrally formed with the second positioning member 21.

[0077] Specifically, such as Figure 6 As shown, the first slide groove 121 extends in the left-right direction. The first slide groove 121 is an outwardly protruding arc-shaped slide groove. The first slider 111 is located at the right end of the first positioning member 11. The first slider 111 is an outwardly protruding arc-shaped slider, and the shape of the first slider 111 is adapted to the shape of the first slide groove 121. The first slider 111 is located in the first slide groove 121, and the first slider 111 is movable along the extension direction of the first slide groove 121.

[0078] The second slide groove 221 extends in the left and right direction. The second slide groove 221 is an outwardly protruding arc-shaped slide groove. The second slider 211 is located at the left end of the second positioning member 21. The second slider 211 is an outwardly protruding arc-shaped slider, and the shape of the second slider 211 is adapted to the shape of the second slide groove 221. The second slider 211 is located in the second slide groove 221, and the second slider 211 is movable in the extending direction of the second slide groove 221.

[0079] The first slider 111 and the second slider 211 have the same shape and size, and the first groove 121 and the second groove 221 have the same shape and size.

[0080] In the hinge assembly of this embodiment, the first slider 111 cooperates with the first slide groove 121, and the second slider 211 cooperates with the second slide groove 221, so that the rotation between the second hinge 20 and the third hinge 30 and the third hinge 30 and the fourth hinge 40 is smoother, avoiding rotation jamming caused by welding and bolt connection.

[0081] In some embodiments, the first positioning member 11 is provided with a third slider 112, the third slider 112 and the first slider 111 are arranged at intervals to define a first space, the first connecting part 12 is located in the first space, the third slider 112 is provided with a third slide groove 1121, the first connecting part 12 is disposed in the third slide groove 1121 and is movable in the third slide groove 1121, the second positioning member 21 is provided with a fourth slider, the fourth slider and the second slider 211 are arranged at intervals to define a second space, the second connecting part 22 is located in the second space, the fourth slider is provided with a fourth slide groove, the second connecting part 22 is disposed in the fourth slide groove and is movable in the fourth slide groove.

[0082] Specifically, such as Figure 7 As shown, the third slider 112 is located on the right side of the first positioning member 11, and the third slider 112 and the first slider 111 are spaced apart in the inner and outer directions to define the first space. The third slider 112 and the first positioning member 11 are integrally formed. The first connecting part 12 is engaged in the first space. The third slider 112 is provided with a third sliding groove 1121. The third sliding groove 1121 is an outwardly protruding arc-shaped sliding groove. The first connecting part 12 is in the third sliding groove 1121 and can move within the third sliding groove 1121.

[0083] The fourth slider is located on the left side of the second positioning member 21, and the fourth slider and the second slider 211 are spaced apart in the inward and outward directions to define the second space. The fourth slider and the second positioning member 21 are integrally formed. The second connecting part 22 is engaged in the second space. The fourth slider is provided with a fourth sliding groove, which is an outwardly protruding arc-shaped sliding groove. The second connecting part 22 is located in the fourth sliding groove and can move within the fourth sliding groove.

[0084] The hinge assembly of this embodiment improves the connection stability between the first connecting part 12 and the first positioning member 11 by providing a third slider 112 and defining a first space for engaging the first connecting part 12 with the first slider 111, thereby improving the connection stability between the second hinge joint 20 and the third hinge joint 30. Furthermore, a third groove 1121 on the third slider 112 improves the flexibility and accuracy of rotation between the first connecting part 12 and the first positioning member 11. Similarly, by providing a fourth slider and defining a second space for engaging the second connecting part 22 with the second slider 211, the connection stability between the second connecting part 22 and the second positioning member 21 is improved. A fourth groove on the fourth slider, within which the second connecting part 22 moves, further improves the flexibility and accuracy of rotation between the second connecting part 22 and the second positioning member 21.

[0085] In some embodiments, the first slider 111 is provided with a first stop portion 1111, the first connecting portion 12 is provided with a first limiting portion 122, the second slider 211 is provided with a second stop portion 2111, the second connecting portion 22 is provided with a second limiting portion 222, and the hinge assembly has an unfolded position and a folded position. When the hinge assembly is in the unfolded position, the first stop portion 1111 contacts the first limiting portion 122 to limit the positions of the second hinge joint 20 and the third hinge joint 30, and the second stop portion 2111 contacts the second limiting portion 222 to limit the positions of the third hinge joint 30 and the fourth hinge joint 40.

[0086] Specifically, such as Figures 5 to 7 As shown, a first stop 1111 is located at the right end of the first slider 111 and is engaged within the first groove 121. A first limiting part 122 is provided at the left end of the first connecting part 12. When the hinge assembly is in the unfolded position, the left end face of the first stop 1111 abuts against the right end face of the first limiting part 122, thereby limiting the inward rotation between the second hinge 20 and the third hinge 30. When the hinge assembly is in the folded position, the abutment between the right end of the first stop 1111 and the third hinge 30 prevents the first slider 111 from moving further, thereby limiting the outward rotation between the second hinge 20 and the third hinge 30.

[0087] The second stop 2111 is located at the left end of the second slider 211 and is engaged within the second slide groove 221. The right end of the second connecting part 22 is provided with a second limiting part 222. When the hinge assembly is in the unfolded position, the right end face of the second stop 2111 abuts against the left end face of the second limiting part 222, thereby limiting the inward rotation between the fourth hinge 40 and the third hinge 30. When the hinge assembly is in the folded position, the left end face of the second stop 2111 abuts against the third hinge 30, preventing the second slider 211 from moving further, thereby limiting the outward rotation between the fourth hinge 40 and the third hinge 30.

[0088] The hinge assembly of this invention, through the cooperation of the first stop portion 1111 and the first limiting portion 122, can prevent the second hinge 20 and the third hinge 30 from over-expanding during the unfolding process. Through the cooperation between the first stop portion 1111 and the third hinge 30, it can prevent the third hinge 30 and the second hinge 20 from over-folding during the folding process. Through the cooperation between the second stop portion 2111 and the second limiting portion 222, it can prevent the third hinge 30 and the fourth hinge 40 from over-expanding during the unfolding process. Through the cooperation between the second stop portion 2111 and the third hinge 30, it can prevent the third hinge 30 and the fourth hinge 40 from over-folding during the folding process, thereby ensuring the safety and stability of the hinge 100 assembly in use.

[0089] In some embodiments, the first connecting member 1 further includes a third connecting portion 13 disposed on the first hinge joint 10 and a fifth slider 14 disposed on the first positioning member 11. The third connecting portion 13 is arranged adjacent to the second hinge joint 20 and is provided with a fifth sliding groove 131. The fifth slider 14 is arranged adjacent to the first hinge joint 10, is disposed in the fifth sliding groove 131, and is movable within the fifth sliding groove 131.

[0090] Specifically, such as Figure 5 , Figure 6 and Figure 7 As shown, the third connecting part 13 is located at the right end of the first hinge joint 10, and the third connecting part 13 is integrally formed with the first hinge joint 10. The third connecting part 13 is provided with a fifth sliding groove 131 extending in the left and right direction. The fifth sliding groove 131 is an arc-shaped sliding groove protruding outward. The fifth slider 14 is located at the left end of the first positioning member 11, and the fifth slider 14 is integrally formed with the first positioning member 11. The fifth slider 14 is located in the fifth sliding groove 131, and the fifth slider 14 is movable in the fifth sliding groove 131. The fifth slider 14 is an arc-shaped slider protruding outward.

[0091] The second connecting component 2 also includes a fourth connecting portion 24 disposed on the fifth hinge joint 50 and a sixth slider 25 disposed on the second positioning member 21. The fourth connecting portion 24 is arranged adjacent to the fourth hinge joint 40 and is provided with a sixth sliding groove 241. The sixth slider 25 is arranged adjacent to the fifth hinge joint 50, is disposed in the sixth sliding groove 241, and is movable within the sixth sliding groove 241.

[0092] like Figure 5 As shown, the fourth connecting part 24 is located at the right end of the first hinge joint 10, and the fourth connecting part 24 is integrally formed with the fifth hinge joint 50. The fourth connecting part 24 is provided with a sixth sliding groove 241 extending in the left and right direction. The sixth sliding groove 241 is an arc-shaped sliding groove protruding outward. The sixth slider 25 is located at the right end of the second positioning member 21, and the sixth slider 25 is integrally formed with the second positioning member 21. The sixth slider 25 is located in the sixth sliding groove 241, and the sixth slider 25 is movable in the sixth sliding groove 241. The sixth slider 25 is an arc-shaped slider protruding outward.

[0093] The fifth slider 14 and the sixth slider 25 have the same shape and size, and the fifth groove 131 and the sixth groove 241 have the same shape and size.

[0094] In the hinge assembly of this embodiment, the fifth slider 14 cooperates with the fifth slide groove 131, and the sixth slider 25 cooperates with the sixth slide groove 241, so that the rotation between the first hinge joint 10 and the second hinge joint 20 and the fourth hinge joint 40 and the fifth hinge joint 50 is smoother, avoiding rotation jamming caused by welding and bolt connection.

[0095] In some embodiments, the first positioning member 11 is further provided with a seventh slider 113, the seventh slider 113 and the fifth slider 14 are arranged at intervals to define a third space, the third connecting part 13 is located in the third space, the seventh slider 113 is provided with a seventh slide groove 1131, the third connecting part 13 is provided in the seventh slide groove 1131, and the third connecting part 13 is movable in the seventh slide groove 1131.

[0096] Specifically, such as Figure 5 As shown, the seventh slider 113 is located on the left side of the first positioning member 11. The seventh slider 113 is integrally formed with the first positioning member 11, and the seventh slider 113 and the fifth slider 14 are spaced apart in the inward and outward directions to define the third space. The third connecting part 13 is engaged in the third space. The seventh slider 113 is provided with a seventh sliding groove 1131, which is an outwardly protruding arc-shaped sliding groove. The third connecting part 13 is located in the seventh sliding groove 1131 and can move within the seventh sliding groove 1131.

[0097] The second positioning member 21 is provided with an eighth slider 83. The eighth slider 83 and the sixth slider 25 are arranged at intervals to define a fourth space. The fourth connecting part 24 is located in the fourth space. The eighth slider 83 is provided with an eighth sliding groove. The fourth connecting part 24 is located in the eighth sliding groove and can move within the eighth sliding groove.

[0098] like Figure 5 As shown, the eighth slider 83 is located on the right side of the second positioning member 21. The eighth slider 83 and the second positioning member 21 are integrally formed, and the eighth slider 83 and the sixth slider 25 are spaced apart in the inner and outer directions to define the fourth space. The fourth connecting part 24 is engaged in the fourth space. The eighth slider 83 is provided with an eighth sliding groove, which is an outwardly protruding arc-shaped sliding groove. The fourth connecting part 24 is located in the eighth sliding groove and can move within the eighth sliding groove.

[0099] The hinge assembly of this embodiment improves the connection stability between the third connecting part 13 and the first positioning member 11 by setting a seventh slider 113 and defining a third space for engaging the third connecting part 13 with the fifth slider 14, thereby improving the connection stability between the first hinge joint 10 and the second hinge joint 20. Furthermore, a seventh groove 1131 is provided on the seventh slider 113, improving the flexibility and accuracy of rotation between the third connecting part 13 and the first positioning member 11. Similarly, by setting an eighth slider 83 and defining a fourth space for engaging the fourth connecting part 24 with the sixth slider 25, the connection stability between the fourth connecting part 24 and the second positioning member 21 is improved. An eighth groove is provided on the eighth slider 83, and the fourth connecting part 24 moves within the eighth groove, improving the flexibility and accuracy of rotation between the fourth connecting part 24 and the second positioning member 21.

[0100] In some embodiments, the fifth slider 14 is provided with a third stop portion 141, the third connecting portion 13 is provided with a third limiting portion 132, the sixth slider 25 is provided with a fourth stop portion 251, the fourth connecting portion 24 is provided with a fourth limiting portion 242, and the hinge assembly has an unfolded position and a folded position. When the hinge assembly is in the unfolded position, the third stop portion 141 contacts the third limiting portion 132 to limit the positions of the first hinge joint 10 and the second hinge joint 20, and the fourth stop portion 251 contacts the fourth limiting portion 242 to limit the positions of the fourth hinge joint 40 and the fifth hinge joint 50.

[0101] Specifically, such as Figures 5 to 7 As shown, the third stop 141 is located at the left end of the fifth slider 14 and is engaged within the fifth slide groove 131. The right end of the third connecting part 13 is provided with a first limiting part 122. When the hinge assembly is in the unfolded position, the right end face of the third stop 141 abuts against the left end face of the third limiting part 132, thereby limiting the inward rotation between the first hinge joint 10 and the second hinge joint 20. When the hinge assembly is in the folded position, the abutment between the left end of the third stop 141 and the first hinge joint 10 prevents the fifth slider 14 from moving further, thereby limiting the outward rotation between the first hinge joint 10 and the second hinge joint 20.

[0102] A fourth stop 251 is located at the right end of the sixth slider 25 and is engaged within the sixth slide groove 241. A fourth limiting part 242 is located at the left end of the fourth connecting part 24. When the hinge assembly is in the unfolded position, the left end face of the fourth stop 251 abuts against the right end face of the fourth limiting part 242, thereby limiting the inward rotation between the fourth hinge joint 40 and the fifth hinge joint 50. When the hinge assembly is in the folded position, the right end face of the fourth stop 251 abuts against the fifth hinge joint 50, preventing the sixth slider 25 from moving further, thereby limiting the outward rotation between the fourth hinge joint 40 and the fifth hinge joint 50.

[0103] The hinge assembly of this embodiment of the invention, through the cooperation of the third stop 141 and the third limiting part 132, can prevent the first hinge 10 and the second hinge 20 from over-expanding during the unfolding process. Through the cooperation between the third stop 141 and the first hinge 10, it can prevent the first hinge 10 and the second hinge 20 from over-folding during the folding process. Through the cooperation of the fourth stop 251 and the fourth limiting part 242, it can prevent the fourth hinge 40 and the fifth hinge 50 from over-expanding during the unfolding process. Through the cooperation between the fourth stop 251 and the fifth hinge 50, it can prevent the fourth hinge 40 and the fifth hinge 50 from over-folding during the folding process, thereby ensuring the safety and stability of the hinge 100 assembly in use.

[0104] In some embodiments, the number of first connecting members 1 and second connecting members 2 are both multiple and the same, and the multiple first connecting members 1 are in the length direction of the hinge 100 (e.g., Figure 4 As shown in the vertical direction, multiple second connecting parts 2 are arranged at intervals along the length direction of the hinge 100, and multiple first connecting parts 1 and multiple second connecting parts 2 correspond one-to-one.

[0105] Specifically, such as Figure 4 and Figure 5 As shown, there are three first connecting parts 1, which are evenly spaced in the vertical direction. There are also three second connecting parts 2, which are evenly spaced in the vertical direction. The first connecting parts 1 and the second connecting parts 2 correspond one-to-one in the horizontal direction.

[0106] The hinge assembly of this invention, by providing multiple first connecting parts 1 and second connecting parts 2, can improve the stability of the connection between the various hinge joints 100, and also improve the flexibility and accuracy of the hinge assembly's rotation.

[0107] In some embodiments, the hinge assembly further includes a third connecting member 3 and a fourth connecting member 4. The third connecting member 3 is disposed between the first hinge joint 10 and the third hinge joint 30, and the fourth connecting member 4 is disposed between the third hinge joint 30 and the fifth hinge joint 50. The third connecting member 3 and the first connecting member 1 are spaced apart in the length direction of the hinge joint 100, and the fourth connecting member 4 and the second connecting member 2 are spaced apart in the length direction of the hinge joint 100.

[0108] Specifically, such as Figure 4 and Figure 5 As shown, the third connecting component 3 and the first connecting component 1 are arranged at intervals in the vertical direction, the fourth connecting component 4 and the second connecting component 2 are arranged at intervals in the vertical direction, and the third connecting component 3 and the fourth connecting component 4 are arranged at intervals in the horizontal direction.

[0109] The left end of the third connecting part 3 is connected to the first hinge 10, the right end of the third connecting part 3 is connected to the third hinge 30, the left end of the fourth connecting part 4 is connected to the third hinge 30, and the right end of the fourth connecting part 4 is connected to the fifth hinge 50.

[0110] The hinge assembly of this invention, by providing a third connecting component 3 and a fourth connecting component 4, can improve the connection stability between each hinge joint 100 in the hinge assembly, and also improve the synchronization of the rotation of the hinge joint 100.

[0111] In some embodiments, the third connecting member 3 includes a first connecting member 31 and a second connecting member 32. The first connecting member 31 includes a first gear portion 311 and a first sliding portion 312 connected in sequence. The first gear portion 311 is connected to the second hinge joint 20 and is rotatable relative to the second hinge joint 20. The first sliding portion 312 is connected to the first hinge joint 10 and is movable relative to the first hinge joint 10.

[0112] like Figures 5 to 7 As shown, the first gear part 311 is connected to the second hinge joint 20, and the first gear part 311 is rotatable relative to the second hinge joint 20. The first sliding part 312 extends in the left and right direction. The left end of the first sliding part 312 is connected to the first hinge joint 10, and the left end of the first sliding part 312 is movable in the left and right direction. The first sliding part 312 and the first gear part 311 are integrally formed. The first gear part 311 is a half gear.

[0113] The second connecting member 32 includes a second gear portion 321 and a second sliding portion 322 connected in sequence. The second gear portion 321 is connected to the second hinge joint 20 and is rotatable relative to the second hinge joint 20. The second sliding portion 322 is connected to the third hinge joint 30 and is movable relative to the third hinge joint 30. The first gear portion 311 meshes with the second gear portion 321.

[0114] like Figures 5 to 7 As shown, the second gear portion 321 is connected to the second hinge joint 20 and is rotatable relative to the second hinge joint 20. The second sliding portion 322 extends in the left-right direction, and its right end is connected to the third hinge joint 30. The right end of the second sliding portion 322 is movable in the left-right direction. The second sliding portion 322 and the second gear portion 321 are integrally formed, and the second gear portion 321 is a half gear. The second gear portion 321 meshes with the first gear portion 311. That is, when the first hinge joint 10 rotates, it drives the first gear portion 311 to rotate, and through the meshing of the first gear portion 311 and the second gear portion 321, it drives the second hinge joint 20 to rotate.

[0115] The hinge assembly of this invention, by providing a first gear portion 311 and a second gear portion 321 that mesh with each other, can simultaneously drive the second hinge portion 20 to rotate when the first hinge portion 10 rotates, thereby improving the synchronicity of the hinge assembly's rotation. Through the sliding of the first sliding portion 312 and the second sliding portion 322, length compensation can be performed when the hinge portion 100 rotates, thereby improving the accuracy and flexibility of the hinge assembly's rotation.

[0116] In some embodiments, the first hinge 10 is provided with a ninth slide groove 101, the first sliding part 312 is disposed in the ninth slide groove 101 and is movable in the ninth slide groove 101, the third hinge 30 is provided with a tenth slide groove 301, the second sliding part 322 is disposed in the tenth slide groove 301 and is movable in the tenth slide groove 301.

[0117] Specifically, such as Figures 5 to 7 As shown, the right end of the first hinge 10 is provided with a ninth slide groove 101, which extends in the left-right direction. The position of the ninth slide groove 101 is opposite to the first sliding part 312. The first sliding part 312 is engaged in the ninth slide groove 101 and is movable in the extending direction of the ninth slide groove 101. The left end of the third hinge 30 is provided with a tenth slide groove 301, which extends in the left-right direction. The position of the tenth slide groove 301 is opposite to the second sliding part 322. The second sliding part 322 is engaged in the tenth slide groove 301 and is movable in the extending direction of the tenth slide groove 301.

[0118] The hinge assembly of this invention, by providing a ninth slide groove 101 and a tenth slide groove 301, can not only lock the first sliding part 312 and the second sliding part 322 in the ninth slide groove 101 and the tenth slide groove 301, but also provide guidance for the rotation of the first hinge joint 10 and the second hinge joint 20, thereby improving the accuracy and flexibility of the hinge assembly rotation.

[0119] In some embodiments, the fourth connecting member 4 includes a third connecting member 41 and a fourth connecting member 42. The third connecting member 41 includes a third gear portion 411 and a third sliding portion 412 connected in sequence. The third gear portion 411 is connected to the fourth hinge 40 and is rotatable relative to the fourth hinge 40. The third sliding portion 412 is connected to the third hinge 30 and is movable relative to the third hinge 30.

[0120] like Figure 5 As shown, the third gear part 411 is connected to the fourth hinge joint 40, and the third gear part 411 is rotatable relative to the fourth hinge joint 40. The third sliding part 412 extends in the left and right direction. The left end of the third sliding part 412 is connected to the third hinge joint 30, and the left end of the third sliding part 412 is movable in the left and right direction. The third sliding part 412 and the third gear part 411 are integrally formed. The third gear part 411 is a half gear.

[0121] The fourth connecting member 42 includes a fourth gear portion 421 and a fourth sliding portion 422 connected in sequence. The fourth gear portion 421 is connected to the third hinge 30 and is rotatable relative to the third hinge 30. The fourth sliding portion 422 is connected to the fifth hinge 50 and is movable relative to the fifth hinge 50. The third gear portion 411 meshes with the fourth gear portion 421.

[0122] like Figure 5 As shown, the fourth gear part 421 is connected to the fourth hinge joint 40, and the fourth gear part 421 is rotatable relative to the fourth hinge joint 40. The fourth sliding part 422 extends in the left-right direction, and the right end of the fourth sliding part 422 is connected to the fifth hinge joint 50. The right end of the fourth sliding part 422 is movable in the left-right direction. The fourth sliding part 422 and the fourth gear part 421 are integrally formed. The fourth gear part 421 is a half gear. The fourth gear part 421 meshes with the third gear part 411. That is, when the fifth hinge joint 50 rotates, it drives the fourth gear part 421 to rotate, and through the meshing of the fourth gear part 421 and the third gear part 411, it drives the fourth hinge joint 40 to rotate.

[0123] The hinge assembly of this embodiment of the invention, by providing a third gear part 411 and a fourth gear part 421 that mesh with each other, can simultaneously drive the fourth hinge part 40 to rotate when the fifth hinge part 50 rotates, thereby improving the synchronicity of the hinge assembly rotation. Through the sliding of the third sliding part 412 and the fourth sliding part 422, length compensation can be performed when the hinge part 100 rotates, thereby improving the accuracy and flexibility of the hinge assembly rotation.

[0124] In some embodiments, the third hinge 30 is provided with an eleventh slide groove 302, the third sliding part 412 is disposed in the eleventh slide groove 302 and is movable in the eleventh slide groove 302, the fifth hinge 50 is provided with a twelfth slide groove 501, the fourth sliding part 422 is disposed in the twelfth slide groove 501 and is movable in the twelfth slide groove 501.

[0125] Specifically, such as Figure 5 As shown, the third hinge 30 is provided with an eleventh sliding groove 302. The eleventh sliding groove 302 and the tenth sliding groove 301 are arranged at intervals in the vertical direction. The eleventh sliding groove 302 extends in the horizontal direction. The position of the eleventh sliding groove 302 is opposite to the third sliding part 412. The third sliding part 412 is engaged in the eleventh sliding groove 302, and the third sliding part 412 is movable in the extending direction of the eleventh sliding groove 302.

[0126] The left end of the fifth hinge 50 is provided with a twelfth sliding groove 501. The twelfth sliding groove 501 extends in the left and right direction. The position of the twelfth sliding groove 501 is opposite to the fourth sliding part 422. The fourth sliding part 422 is engaged in the twelfth sliding groove 501 and can move in the extending direction of the twelfth sliding groove 501.

[0127] The hinge assembly of this invention, by providing an eleventh slide groove 302 and a twelfth slide groove 501, can not only lock the third sliding part 412 and the fourth sliding part 422 in the eleventh slide groove 302 and the twelfth slide groove 501, but also provide guidance for the rotation of the fourth hinge joint 40 and the fifth hinge joint 50, thereby improving the rotation accuracy and flexibility of the hinge assembly.

[0128] In some embodiments, there are multiple third connecting members 3 and multiple fourth connecting members 4. Multiple third connecting members 3 are arranged at intervals along the length direction of the hinge 100, and multiple fourth connecting members 4 are arranged at intervals along the length direction of the hinge 100. The multiple third connecting members 3 and multiple fourth connecting members 4 correspond one-to-one.

[0129] Specifically, such as Figure 5 As shown, there are two third connecting parts 3, which are arranged at intervals in the vertical direction. There are also two fourth connecting parts 4, which are arranged at intervals in the vertical direction. The third connecting parts 3 and the fourth connecting parts 4 are arranged alternately in the horizontal direction.

[0130] In some embodiments, the hinge assembly further includes a first synchronization component 5 and a second synchronization component 6. The first synchronization component 5 is disposed between the first hinge joint 10 and the third hinge joint 30, and the second synchronization component 6 is disposed between the third hinge joint 30 and the fifth hinge joint 50. The first synchronization component 5 is spaced apart from the first connecting component 1 and the third connecting component 3 in the length direction of the hinge joint 100, and the second synchronization component 6 is disposed between the second connecting component 2 and the fourth connecting component 4.

[0131] Specifically, such as Figure 5 As shown, the left end of the first synchronization component 5 is connected to the first hinge 10, the right end of the first synchronization component 5 is connected to the third hinge 30, the left end of the second synchronization component 6 is connected to the third hinge 30, and the right end of the second synchronization component 6 is connected to the fifth hinge 50.

[0132] In some embodiments, the first synchronization component 5 includes a first rotating shaft 51, a first elastic member 52, and a fifth connecting member 53. The first rotating shaft 51 is connected to the third hinge joint 30 and is rotatable relative to the third hinge joint 30. The first elastic member 52 is sleeved on the first rotating shaft 51. One end of the fifth connecting member 53 is connected to the first rotating shaft 51, and the other end of the fifth connecting member 53 is connected to the first hinge joint 10. The end of the fifth connecting member 53 connected to the first hinge joint 10 is movable relative to the first hinge joint 10.

[0133] Specifically, such as Figure 5 , Figure 8 and Figure 9 As shown, the upper and lower ends of the first rotating shaft 51 are respectively connected to the third hinge joint 30. The first rotating shaft 51 is rotatable relative to the third hinge joint 30. The first elastic element 52 is sleeved on the first rotating shaft 51. The first elastic element 52 can be a spring or a torsion spring. The right end of the fifth connecting member 53 is sleeved on the first rotating shaft 51. The left end of the fifth connecting member 53 is connected to the first hinge joint 10, and the left end of the fifth connecting member 53 is movable relative to the first hinge joint 10.

[0134] The second synchronization component 6 includes a second rotating shaft 61, a second elastic element 62, and a sixth connecting element 63. The second rotating shaft 61 is connected to the third hinge joint 30 and is rotatable relative to the third hinge joint 30. The second rotating shaft 61 and the first rotating shaft 51 are spaced apart in the width direction of the hinge joint 100. The second elastic element 62 is sleeved on the second rotating shaft 61. One end of the sixth connecting element 63 is connected to the second rotating shaft 61, and the other end of the sixth connecting element 63 is connected to the fifth hinge joint 50. The end of the sixth connecting element 63 connected to the fifth hinge joint 50 is movable relative to the fifth hinge joint 50.

[0135] Specifically, such as Figure 5 , Figure 8 and Figure 9 As shown, the upper and lower ends of the second rotating shaft 61 are connected to the third hinge joint 30, respectively. The second rotating shaft 61 is rotatable relative to the third hinge joint 30. The second elastic element 62 is sleeved on the second rotating shaft 61. The second elastic element 62 can be a spring or a torsion spring. The left end of the sixth connecting member 63 is sleeved on the second rotating shaft 61. The left end of the sixth connecting member 63 is connected to the second hinge joint 20, and the right end of the sixth connecting member 63 is movable relative to the fifth hinge joint 50. The second rotating shaft 61 is arranged parallel to the first rotating shaft 51.

[0136] The hinge assembly of this invention, by setting the first synchronization component 5 and the second synchronization component 6, can make the first hinge 10, the second hinge 20, the fourth hinge 40 and the fifth hinge 50 rotate synchronously. It can also provide a certain torque through the first elastic element 52 and the second elastic element 62, thereby improving the accuracy and flexibility of the hinge assembly rotation.

[0137] In some embodiments, the fifth connector 53 includes a fifth sliding portion 531 and a fifth gear portion 532, the fifth gear portion 532 being connected to the first rotating shaft 51; the sixth connector 63 includes a sixth sliding portion 631 and a sixth gear portion 632, the sixth gear portion 632 being connected to the second rotating shaft 61; the first hinge joint 10 is provided with a thirteenth sliding groove 102, the fifth sliding portion 531 is disposed in the thirteenth sliding groove 102 and is movable within the thirteenth sliding groove 102; the fifth hinge joint 50 is provided with a fourteenth sliding groove 502, the sixth sliding portion 631 is disposed in the fourteenth sliding groove 502 and is movable within the fourteenth sliding groove 502.

[0138] Specifically, such as Figure 4 and Figure 5 As shown, the fifth gear portion 532 is sleeved on the first rotating shaft 51. The fifth gear portion 532 is a half gear. The fifth sliding portion 531 extends in the left-right direction, and its right end is connected to the fifth gear portion 532. The fifth sliding portion 531 is located in the thirteenth sliding groove 102 and is movable within the thirteenth sliding groove 102. The sixth gear portion 632 is sleeved on the second rotating shaft 61. The sixth gear portion 632 is a half gear. The left end of the sixth sliding portion 631 is connected to the sixth gear portion 632, and its right end is located in the fourteenth sliding groove 502 and is movable within the fourteenth sliding groove 502.

[0139] The sixth gear 632 meshes with the fifth gear 532, that is, when one of the fifth hinge 50 or the first hinge 10 rotates, the other one is driven to rotate simultaneously through the meshing of the fifth gear 532 and the sixth gear 632.

[0140] The hinge assembly of this invention, by setting a first synchronization component 5 and a second synchronization component 6, can enable the first hinge joint 10 and the fifth hinge joint 50 to rotate synchronously. By setting the fifth sliding part 531 to cooperate with the thirteenth sliding groove 102 and the sixth sliding part 631 to cooperate with the fourteenth sliding groove 502, the connection stability between the first hinge joint 10 and the third hinge joint 30 and the connection stability between the third hinge joint 30 and the fifth hinge joint 50 can be improved. In addition, rotation guidance can be provided during the rotation of the hinge assembly, thereby improving the accuracy and flexibility of rotation.

[0141] In some embodiments, there are multiple first synchronization components 5 and multiple second synchronization components 6. Multiple first synchronization components 5 are arranged at intervals along the length direction of the hinge 100, and multiple second synchronization components 6 are arranged at intervals along the length direction of the hinge 100. The multiple first synchronization components 5 and multiple second synchronization components 6 correspond one-to-one.

[0142] Specifically, such as Figure 4 and Figure 5As shown, there are two first synchronization components 5 and two second synchronization components 6. The two first synchronization components 5 are arranged at intervals in the vertical direction, the two second synchronization components 6 are arranged at intervals in the vertical direction, and the two first synchronization components 5 and the two second synchronization components 6 are arranged opposite each other in the horizontal direction.

[0143] In some embodiments, the hinge assembly further includes a support member 7, which includes a first support plate 71, a second support plate 72, and a third support plate 73. The first support plate 71 and the second support plate 72 are arranged at intervals along the length of the hinge 100. The third support plate 73 is disposed between the first support plate 71 and the second support plate 72. The hinge 100 is located between the first support plate 71 and the second support plate 72. One end of the third hinge 30 is connected to the first support plate 71, and the other end of the third hinge 30 is connected to the second support plate 72.

[0144] It should be noted that the position of the support member 7 is fixed, that is, when the hinge 100 rotates, the support member 7 does not rotate with the hinge 100.

[0145] Specifically, such as Figure 10 As shown, the first support plate 71 and the second support plate 72 are arranged at intervals in the vertical direction. The upper end of the third support plate 73 is connected to the first support plate 71, and the lower end of the third support plate 73 is connected to the second support plate 72. The outer contours of the first support plate 71 and the second support plate 72 are elliptical. For example, the outer contours of the first support plate 71 and the second support plate 72 can also be circular. The upper end of the third hinge 30 is connected to the first support plate 71, and the lower end of the third hinge 30 is connected to the second support plate 72. In other words, the third hinge 30 is fixed.

[0146] For example, the first support plate 71, the second support plate 72, and the third support plate 73 are integrally formed.

[0147] The hinge assembly of this embodiment of the invention can provide support for the third hinge joint 30 by setting the support member 7, thereby ensuring the support stability of the hinge assembly.

[0148] In some embodiments, the hinge assembly further includes a first cover plate 8 and a second cover plate 9, which are respectively connected to the support member 7 and are rotatable relative to the support member 7. The first cover plate 8 and the second cover plate 9 are arranged at intervals in the width direction of the hinge 100.

[0149] Specifically, such as Figure 10As shown, the first cover plate 8 and the second cover plate 9 are arranged at intervals in the left and right direction. The upper end of the first cover plate 8 is hinged to the first support plate 71, and the lower end of the first cover plate 8 is hinged to the second support plate 72. The upper end of the second cover plate 9 is hinged to the first support plate 71, and the lower end of the second cover plate 9 is hinged to the second support plate 72. The first cover plate 8 and the second cover plate 9 have the same shape and size.

[0150] The hinge assembly of this invention, by providing a first cover plate 8 and a second cover plate 9, can cover the first connecting component 1, the second connecting component 2, the third connecting component 3, the fourth connecting component 4, the first synchronization component 5, and the second synchronization component 6, preventing them from being exposed. This not only improves the aesthetics of the hinge assembly but also prevents external debris from entering the interior of the hinge assembly, thereby improving the operational stability of the hinge assembly.

[0151] In some embodiments, the first support plate 71 of the hinge assembly is provided with a first connecting hole 711 and a second connecting hole (not shown), the first connecting hole 711 and the second connecting hole are arranged at intervals in the width direction of the hinge 100, the first cover plate 8 is provided with a first connecting post 81, the first connecting post 81 is disposed in the first connecting hole 711 so that the first cover plate 8 is rotatable relative to the support member 7, and the second cover plate 9 is provided with a second connecting post (not shown), the second connecting post is disposed in the second connecting hole so that the second cover plate 9 is rotatable relative to the support member 7.

[0152] Specifically, such as Figure 10 As shown, the first connecting hole 711 and the second connecting hole are arranged at intervals in the left-right direction. The first connecting post 81 extends into the first connecting hole 711 and can rotate within the first connecting hole 711. The second support plate 72 is provided with a third connecting hole (not shown) at a position opposite to the first connecting hole 711. There are two first connecting posts 81, which are arranged opposite to each other in the up-down direction. The first connecting post 81 located below extends into the third connecting hole and can rotate within the third connecting hole.

[0153] The second support plate 72 is provided with a fourth connecting hole (not shown) located opposite to the second connecting hole. There are two second connecting posts, which are arranged opposite each other in the vertical direction. The lower second connecting post extends into the fourth connecting hole and can rotate within the fourth connecting hole.

[0154] In some embodiments, the first hinge joint 10 is provided with a fifteenth sliding groove 103, the first cover plate 8 is provided with a third connecting post 82, the third connecting post 82 is disposed in the fifteenth sliding groove 103 and is movable in the fifteenth sliding groove 103, the fifth hinge joint 50 is provided with a sixteenth sliding groove 503, the second cover plate 9 is provided with a fourth connecting post, the fourth connecting post is disposed in the sixteenth sliding groove 503 and is movable in the sixteenth sliding groove 503.

[0155] Specifically, such as Figure 10 and Figure 13 As shown, the upper and lower ends of the first hinge joint 10 are each provided with a fifteenth sliding groove 103. The number of third connecting posts 82 is the same as the number of fifteenth sliding grooves 103, and the two correspond one-to-one. The third connecting posts 82 are located in the fifteenth sliding groove 103 and are movable within the fifteenth sliding groove 103. The upper and lower ends of the fifth hinge joint 50 are each provided with a sixteenth sliding groove 503. The number of fourth connecting posts is the same as the number of sixteenth sliding grooves 503, and the two correspond one-to-one. The fourth connecting posts are located in the sixteenth sliding groove 503 and are movable within the sixteenth sliding groove 503.

[0156] The hinge assembly of this embodiment of the invention, through the cooperation of the third connecting post 82 and the fifteenth sliding groove 103, and the cooperation of the fourth connecting post and the sixteenth sliding groove 503, allows the first cover plate 8 to be movable relative to the first hinge joint 10, thereby ensuring that when the hinge joint 100 rotates, the first cover plate 8 always shields the first connecting component 1, the second connecting component 2, the third connecting component 3, the fourth connecting component 4, the first synchronization component 5, and the second synchronization component 6.

[0157] In some embodiments, the third support plate 73 is provided with a seventeenth slide groove 731 and an eighteenth slide groove (not shown), which are spaced apart in the width direction of the hinge 100. The first cover plate 8 is provided with an eighth slider 83, which is disposed in the seventeenth slide groove 731 and is movable within the seventeenth slide groove 731. The second cover plate 9 is provided with a ninth slider, which is disposed in the eighteenth slide groove and is movable within the eighteenth slide groove.

[0158] Specifically, such as Figure 10 and Figure 12 As shown, the eighth slider 83 is an outwardly protruding arc-shaped slider, and the eighth slider 83 is located in the seventeenth slide groove 731, which is an outwardly protruding arc-shaped slide groove. The ninth slider is an outwardly protruding arc-shaped slider, and the ninth slider is located in the eighteenth slide groove, which is an outwardly protruding arc-shaped slide groove.

[0159] The hinge assembly of this invention, through the cooperation of the eighth slider 83 and the seventeenth slide groove 731 and the cooperation of the ninth slider and the eighteenth slide groove, ensures the flexibility of the first cover plate 8 and the second cover plate 9 during rotation, and can also provide guidance for the first cover plate 8 and the second cover plate 9 during rotation, ensuring rotation accuracy.

[0160] An electronic device according to an embodiment of the present invention includes a hinge assembly as described in any of the above embodiments.

[0161] It should be noted that the electronic device can be a flexible screen mobile phone or tablet motor, and understandably, it can also be other electronic devices.

[0162] The electronic device according to the embodiments of the present invention, due to the use of the above-described hinge assembly, is flexible in rotation and easy to assemble and maintain.

[0163] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0164] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0165] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0166] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0167] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0168] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A hinge assembly, characterized by The utility model relates to a hinge joint, comprising: a plurality of hinges connected in sequence, two adjacent hinges are detachably connected, and two adjacent hinges rotate relative to each other, a plurality of hinges rotate towards the same side of the thickness direction; the hinge joint comprises a first hinge, a second hinge, a third hinge, a fourth hinge and a fifth hinge connected in sequence, the first hinge rotates relative to the second hinge around a first virtual axis, the second hinge rotates relative to the third hinge around a second virtual axis, the fourth hinge rotates relative to the third hinge around a third virtual axis, and the fifth hinge rotates relative to the fourth hinge around a fourth virtual axis, and the first virtual axis, the second virtual axis, the third virtual axis and the fourth virtual axis are parallel to each other; a first connecting component and a second connecting component, the first connecting component is arranged between the first hinge and the third hinge to connect the first hinge, the second hinge and the third hinge, and the second connecting component is arranged between the third hinge and the fifth hinge to connect the third hinge, the fourth hinge and the fifth hinge; the first connecting component comprises a first positioning member and a first connecting part arranged on the third hinge, the second connecting component comprises a second positioning member and a second connecting part arranged on the third hinge, the first positioning member is connected with the second hinge, the second positioning member is connected with the fourth hinge, the first connecting part is arranged adjacent to the second hinge, the second connecting part is arranged adjacent to the fourth hinge, a first sliding groove is arranged on the first connecting part, a first sliding block is arranged on one side of the first positioning member adjacent to the third hinge, the first sliding block is arranged in the first sliding groove and can move in the first sliding groove, the second connecting part is provided with a second sliding groove, a second sliding block is arranged on one side of the second positioning member adjacent to the third hinge, the second sliding block is arranged in the second sliding groove and can move in the second sliding groove.

2. The hinge assembly of claim 1, wherein, A third sliding block is arranged on the first positioning member, the third sliding block is arranged in a first space defined by the first sliding block and the first connecting part is arranged in the first space, A fourth sliding block is arranged on the second positioning member, the fourth sliding block is arranged in a second space defined by the second sliding block and the second connecting part is arranged in the second space, the fourth sliding block is arranged in the fourth sliding groove and can move in the fourth sliding groove.

3. The hinge assembly of claim 1, wherein, The first slider is provided with a first stop portion, the first connecting portion is provided with a first limiting portion, the second slider is provided with a second stop portion, the second connecting portion is provided with a second limiting portion, the hinge assembly has an unfolded position and a folded position, when the hinge assembly is in the unfolded position, the first stop portion is in contact with the first limiting portion to limit the positions of the second hinge joint and the third hinge joint, and the second stop portion is in contact with the second limiting portion to limit the positions of the third hinge joint and the fourth hinge joint.

4. The hinge assembly of claim 1, wherein, The first connecting component further comprises a third connecting portion arranged on the first hinge joint and a fifth slider arranged on the first positioning member, the third connecting portion is arranged adjacent to the second hinge joint, the third connecting portion is provided with a fifth sliding groove, the fifth slider is arranged adjacent to the first hinge joint, the fifth slider is arranged in the fifth sliding groove, and the fifth slider is movable in the fifth sliding groove, The second connecting component further comprises a fourth connecting portion arranged on the fifth hinge joint and a sixth slider arranged on the second positioning member, the fourth connecting portion is arranged adjacent to the fourth hinge joint, the fourth connecting portion is provided with a sixth sliding groove, the sixth slider is arranged adjacent to the fifth hinge joint, the sixth slider is arranged in the sixth sliding groove, and the sixth slider is movable in the sixth sliding groove.

5. The hinge assembly of claim 4, wherein, The first positioning member is further provided with a seventh slider, the seventh slider is arranged spaced apart from the fifth slider to define a third space, the third connecting portion is located in the third space, the seventh slider is provided with a seventh sliding groove, the third connecting portion is arranged in the seventh sliding groove, and the third connecting portion is movable in the seventh sliding groove, The second positioning member is provided with an eighth slider, the eighth slider is arranged spaced apart from the sixth slider to define a fourth space, the fourth connecting portion is located in the fourth space, the eighth slider is provided with an eighth sliding groove, the fourth connecting portion is arranged in the eighth sliding groove, and the fourth connecting portion is movable in the eighth sliding groove.

6. The hinge assembly of claim 4, wherein, The fifth slider is provided with a third stop portion, the third connecting portion is provided with a third limiting portion, the sixth slider is provided with a fourth stop portion, the fourth connecting portion is provided with a fourth limiting portion, the hinge assembly has an unfolded position and a folded position, when the hinge assembly is in the unfolded position, the third stop portion is in contact with the third limiting portion to limit the positions of the first hinge joint and the second hinge joint, and the fourth stop portion is in contact with the fourth limiting portion to limit the positions of the fourth hinge joint and the fifth hinge joint.

7. The hinge assembly of any one of claims 1-6, wherein, The number of the first connecting components and the number of the second connecting components are both multiple and the same, multiple first connecting components are arranged spaced apart in the length direction of the hinge joint, multiple second connecting components are arranged spaced apart in the length direction of the hinge joint, and the multiple first connecting components and the multiple second connecting components correspond one by one.

8. The hinge assembly of claim 1, wherein, The third connecting component is arranged between the first hinge joint and a third hinge joint, and the fourth connecting component is arranged between the third hinge joint and a fifth hinge joint.

9. The hinge assembly of claim 8, wherein, The third connecting component comprises a first connecting member and a second connecting member, the first connecting member comprises a first gear part and a first sliding part connected in sequence, the first gear part is connected with the second hinge joint and can rotate relative to the second hinge joint, the first sliding part is connected with the first hinge joint and can move relative to the first hinge joint, the second connecting member comprises a second gear part and a second sliding part connected in sequence, the second gear part is connected with the second hinge joint and can rotate relative to the second hinge joint, the second sliding part is connected with the third hinge joint and can move relative to the third hinge joint, and the first gear part is engaged with the second gear part.

10. The hinge assembly of claim 9, wherein, The first hinge joint is provided with a ninth sliding groove, the first sliding part is arranged in the ninth sliding groove and can move in the ninth sliding groove, the third hinge joint is provided with a tenth sliding groove, the second sliding part is arranged in the tenth sliding groove and can move in the tenth sliding groove.

11. The hinge assembly of claim 8, wherein, The fourth connecting component comprises a third connecting member and a fourth connecting member, the third connecting member comprises a third gear part and a third sliding part connected in sequence, the third gear part is connected with the fourth hinge joint and can rotate relative to the fourth hinge joint, the third sliding part is connected with the third hinge joint and can move relative to the third hinge joint, the fourth connecting member comprises a fourth gear part and a fourth sliding part connected in sequence, the fourth gear part is connected with the third hinge joint and can rotate relative to the third hinge joint, the fourth sliding part is connected with the fifth hinge joint and can move relative to the fifth hinge joint, and the third gear part is engaged with the fourth gear part.

12. The hinge assembly of claim 11, wherein, The third hinge joint is provided with an eleventh sliding groove, the third sliding part is arranged in the eleventh sliding groove and can move in the eleventh sliding groove, the fifth hinge joint is provided with a twelfth sliding groove, the fourth sliding part is arranged in the twelfth sliding groove and can move in the twelfth sliding groove.

13. The hinge assembly of any one of claims 8-12, wherein, The number of the third connecting components and the fourth connecting components is multiple, the multiple third connecting components are arranged in the length direction of the hinge joints, the multiple fourth connecting components are arranged in the length direction of the hinge joints, and the multiple third connecting components and the multiple fourth connecting components correspond to each other.

14. The hinge assembly of claim 8, wherein, The first synchronization component is arranged between the first hinge joint and the third hinge joint, and the second synchronization component is arranged between the third hinge joint and the fifth hinge joint.

15. The hinge assembly of claim 14, wherein, The first synchronization component comprises a first rotating shaft, a first elastic member and a fifth connecting member. The first rotating shaft is connected with the third hinge joint and is rotatable relative to the third hinge joint. The first elastic member is sleeved on the first rotating shaft. One end of the fifth connecting member is connected with the first rotating shaft, and the other end of the fifth connecting member is connected with the first hinge joint. The end of the fifth connecting member connected with the first hinge joint is movable relative to the first hinge joint. The second synchronization component comprises a second rotating shaft, a second elastic member and a sixth connecting member. The second rotating shaft is connected with the third hinge joint and is rotatable relative to the third hinge joint. The second rotating shaft is arranged apart from the first rotating shaft in the width direction of the hinge joint. The second elastic member is sleeved on the second rotating shaft. One end of the sixth connecting member is connected with the second rotating shaft, and the other end of the sixth connecting member is connected with the fifth hinge joint. The end of the sixth connecting member connected with the fifth hinge joint is movable relative to the fifth hinge joint.

16. The hinge assembly of claim 15, wherein, The fifth connecting member comprises a fifth sliding part and a fifth gear part. The sixth connecting member comprises a sixth sliding part and a sixth gear part. The first hinge joint is provided with a thirteenth sliding groove. The fifth sliding part is arranged in the thirteenth sliding groove and is movable in the thirteenth sliding groove. The fifth hinge joint is provided with a fourteenth sliding groove. The sixth sliding part is arranged in the fourteenth sliding groove and is movable in the fourteenth sliding groove.

17. The hinge assembly of claim 15, wherein, The second rotating shaft is arranged in parallel with the first rotating shaft.

18. The hinge assembly of any of claims 15-17, wherein, The first synchronization component and the second synchronization component are provided in plurality. The plurality of first synchronization components are arranged apart from each other in the length direction of the hinge joint. The plurality of second synchronization components are arranged apart from each other in the length direction of the hinge joint. The plurality of first synchronization components and the plurality of second synchronization components are in one-to-one correspondence.

19. The hinge assembly of claim 1, wherein, The support member comprises a first support plate, a second support plate and a third support plate. The first support plate and the second support plate are arranged apart from each other in the length direction of the hinge joint. The third support plate is arranged between the first support plate and the second support plate. The hinge joint is located between the first support plate and the second support plate. One end of the third hinge joint is connected with the first support plate, and the other end of the third hinge joint is connected with the second support plate.

20. The hinge assembly of claim 19, wherein, Further comprising a first cover plate and a second cover plate, the first cover plate and the second cover plate are connected with the support respectively, and the first cover plate and the second cover plate are rotatable relative to the support, the first cover plate and the second cover plate are arranged in the width direction of the hinge.

21. The hinge assembly of claim 20, wherein, The first support plate is provided with a first connecting hole and a second connecting hole, the first connecting hole and the second connecting hole are arranged in the width direction of the hinge, the first cover plate is provided with a first connecting column, the first connecting column is arranged in the first connecting hole to make the first cover plate rotatable relative to the support, the second cover plate is provided with a second connecting column, the second connecting column is arranged in the second connecting hole to make the second cover plate rotatable relative to the support.

22. The hinge assembly of claim 20, wherein, The first hinge is provided with a fifteenth sliding groove, the first cover plate is provided with a third connecting column, the third connecting column is arranged in the fifteenth sliding groove, and the third connecting column is movable in the fifteenth sliding groove, the fifth hinge is provided with a sixteenth sliding groove, the second cover plate is provided with a fourth connecting column, the fourth connecting column is arranged in the sixteenth sliding groove, and the fourth connecting column is movable in the sixteenth sliding groove.

23. The hinge assembly of any one of claims 20-22, wherein, The third support plate is provided with a seventeenth sliding groove and an eighteenth sliding groove, the seventeenth sliding groove and the eighteenth sliding groove are arranged in the width direction of the hinge, the first cover plate is provided with an eighth sliding block, the eighth sliding block is arranged in the seventeenth sliding groove, and the eighth sliding block is movable in the seventeenth sliding groove, the second cover plate is provided with a ninth sliding block, the ninth sliding block is arranged in the eighteenth sliding groove, and the ninth sliding block is movable in the eighteenth sliding groove.

24. An electronic device, comprising: The hinge assembly comprises the hinge assembly according to any one of claims 1-23.

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