Torsion assembly, folding device and electronic equipment

Abstract

The invention discloses a torsion assembly, a folding device and electronic equipment, and relates to the technical field of bendable structures. The torsion assembly comprises a driving piece and a driven piece which can rotate relatively, a first meshing piece rotating synchronously with the driving piece, a second meshing piece arranged on the driven piece and a reset piece providing force abutting against the first meshing piece for the second meshing piece. The matching positions of the first meshing piece and the second meshing piece comprise a plurality of meshing positions and a movable position in the period of switching from one meshing position to the next meshing position; the first meshing piece can be driven by the driving piece to change the meshing state with the second meshing piece, the first meshing piece and the second meshing piece can be switched from a meshing position to a next meshing position through a movable position, and then graded hovering of the torsion assembly is achieved. Therefore, the first meshing piece and the second meshing piece do not need to be in the meshing position capable of achieving hovering all the time, and the use abrasion rate of the first meshing piece and the second meshing piece is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of bendable structures, and in particular to a torsion assembly, a folding device and an electronic device. Background Art

[0002] Bendable devices usually need to have the function of hovering after bending to a certain angle. Taking foldable screen mobile phones as an example, foldable screen mobile phones are often in a folded and hovering state when used to play videos, which can give users a better user experience. The current mainstream solution to achieve the hovering function is to use a spring to provide torque to the axial cam so that the two cams that can rotate relative to each other can generate greater friction, thereby allowing the bendable device to remain hovering when opening and closing. However, the cam wear rate in the existing solution is very high, resulting in a short service life of the bendable device. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, in a first aspect, the present application provides a torsion assembly, including an active member, a passive member, a first meshing member, a second meshing member and a reset member, wherein the active member can rotate relative to the passive member, the first meshing member is configured to rotate synchronously with the active member, the second meshing member is arranged on the passive member, and the reset member is used to provide a force for the second meshing member to resist the first meshing member;

[0004] Among them, the matching position of the first engaging member and the second engaging member includes multiple engaging positions and an active position during the transition from one engaging position to the next engaging position; when the first engaging member and the second engaging member are in the engaging position, the torsion assembly is in a suspended state; when the first engaging member and the second engaging member are in the active position, the torsion assembly is in an active state; the first engaging member can change the engaging state with the second engaging member under the drive of the active member, and the first engaging member and the second engaging member can switch from one engaging position to the next engaging position via the active position, thereby realizing the graded suspension of the torsion assembly.

[0005] In a second aspect, the present application provides a folding device, comprising two shells and the above-mentioned torsion assembly, the two shells are respectively connected to the torsion assembly, and the torsion assembly is used to realize the function that the two shells can be folded relative to each other.

[0006] In a third aspect, the present application provides an electronic device, including a flexible screen and the above-mentioned folding device, and the flexible screen is arranged on the folding device.

[0007] The first engaging member and the second engaging member of the torsion assembly provided in the embodiment of the present application can cooperate to form a plurality of engaging positions and an active position during the transition from one engaging position to the next engaging position, thereby realizing graded hovering of the torsion assembly; when the torsion assembly needs to enter a hovering state, the engaging state of the first engaging member and the second engaging member can be changed by rotating the active member, and the first engaging member and the second engaging member can be adjusted to one of the plurality of engaging positions corresponding to the required hovering angle, so that the first engaging member and the second engaging member do not have to be in the engaging position that can realize hovering all the time, thereby reducing the wear rate of the first engaging member and the second engaging member and extending the service life of the torsion assembly.

[0008] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 is a schematic structural diagram of an embodiment of an electronic device of the present application in an unfolded state;

[0011] Figure 2 yes Figure 1 A schematic diagram of the exploded structure of the electronic device in the embodiment;

[0012] Figure 3 is a schematic structural diagram of an embodiment of an electronic device of the present application in a folded state;

[0013] Figure 4 yes Figure 3 A schematic cross-sectional structure diagram of an electronic device in an embodiment;

[0014] Figure 5 It is a schematic diagram of a structural composition block diagram of an embodiment of an electronic device of the present application;

[0015] Figure 6 It is a schematic structural diagram of an embodiment of a torsion assembly of the present application in an unfolded state;

[0016] Figure 7 yes Figure 6 A schematic structural diagram of the torsion assembly in a folded state in an embodiment;

[0017] Figure 8 yes Figure 6 A schematic diagram of the exploded structure of the torsion assembly in the embodiment;

[0018] Fig. 9 yes Figure 6 A schematic diagram of the exploded structure of the torsion assembly in the embodiment from another perspective;

[0019] Fig.10 It is a partial structural schematic diagram of the torsion assembly of the present application;

[0020] Fig.11 yes Fig.10 A schematic diagram of the exploded structure of the torsion assembly in the embodiment;

[0021] Fig.12 is a partial structural schematic diagram of the relevant torque mechanism;

[0022] Fig.13 It is a partial structural schematic diagram of an embodiment of a torsion assembly of the present application;

[0023] Fig.14 It is a structural schematic diagram of a first engaging member and a second engaging member provided in an embodiment of a torsion assembly of the present application;

[0024] Fig.15 is a structural schematic diagram of a first engagement member and a second engagement member in an engagement position provided by an embodiment of the present application;

[0025] Fig.16 It is a schematic diagram of the rotational cooperation structure of the rotating shaft and the linkage member provided in an embodiment of the torsion assembly of the present application;

[0026] Fig.17 It is a schematic diagram of the rotational cooperation structure between the rotating shaft and the abutting member provided in an embodiment of the torque assembly of the present application;

[0027] Fig.18 It is a schematic diagram of the rotational cooperation structure between the rotating member and the base provided in an embodiment of the torsion assembly of the present application;

[0028] Fig.19 It is a schematic diagram of a partially exploded structure provided by an embodiment of a torsion assembly of the present application;

[0029] Fig. 20 yes Fig.19 A partial structural diagram of the torsion assembly in another exploded state in the embodiment;

[0030] Fig.21 yes Fig.19 A partial structural diagram of the torsion assembly in another exploded state in the embodiment;

[0031] Fig. 22 yes Fig.19 A partial structural diagram of the torsion assembly in another exploded state in the embodiment;

[0032] Fig.23It is a partial structural schematic diagram of an embodiment of a torsion assembly of the present application;

[0033] Fig.24 yes Fig.23 A schematic diagram of a partially exploded structure of a torsion assembly in an embodiment;

[0034] Fig.25 yes Fig.23 A schematic cross-sectional structure diagram of a torsion assembly in an embodiment;

[0035] Fig.26 It is a partial structural schematic diagram of an embodiment of a torsion assembly of the present application;

[0036] Fig. 27 yes Fig.26 A schematic diagram of a partially exploded structure of a torsion assembly in an embodiment;

[0037] Fig.28 yes Fig.26 A schematic cross-sectional structure diagram of a torsion assembly in an embodiment;

[0038] Fig.29 It is a partial cross-sectional structural schematic diagram provided by an embodiment of a torsion assembly of the present application;

[0039] Fig.30 It is a schematic diagram of a partially exploded structure provided by an embodiment of a torsion assembly of the present application;

[0040] Fig.31 It is a partial cross-sectional structural schematic diagram provided by another embodiment of the torsion assembly of the present application. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be appreciated that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present application.

[0042] Reference to "embodiments" in an application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0043] The present application provides a torsion assembly, a folding device, and an electronic device. As used herein, "electronic devices" (or simply "terminals") include, but are not limited to, devices configured to receive / send communication signals via a wired line connection (such as via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (for example, for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communication System (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device that is equipped with a cellular communications module.

[0044] Please also read Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the structure of an embodiment of the electronic device of the present application in an unfolded state, Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the electronic device in the embodiment. The electronic device 1 can be a foldable mobile phone, a tablet computer, a laptop computer, a wearable device, etc., and the diagram of this embodiment takes a foldable mobile phone as an example. The electronic device 1 includes a folding device 10 and a flexible screen 20, and the flexible screen 20 is arranged on the folding device 10.

[0045] Specifically, the folding device 10 includes a torsion assembly 30 and two housings 11, the two housings 11 are respectively connected to the torsion assembly 30, the torsion assembly 30 is used to realize the function that the two housings 11 can be folded relative to each other, and the housings 11 are used to install the flexible screen 20. The two ends of the flexible screen 20 are respectively connected to the two housings 11. The electronic device 1 can apply a steering force to the housing 11 so that the housing 11 drives the torsion assembly 30 to rotate, so that the two housings 11 can drive the flexible screen 20 to fold or unfold.

[0046] The folding device 10 may further include a frame 12 disposed on the housing 11, the frame 12 being disposed on the peripheral side of the housing 11 and surrounding the flexible screen 20 on the housing 11, for limiting the position of the flexible screen 20. A reinforcement member 13 may be provided between the frame 12 and the housing 11, and the reinforcement member 13 may be made of metal or other hard materials to improve the overall strength of the folding device 10.

[0047] Optionally, the electronic device 1 further has a plurality of electronic components, including but not limited to a battery, a circuit board, a speaker, an earpiece, buttons, etc. These electronic components can be arranged in the housing 11 .

[0048] It should be noted that the folding device 10 provided in the embodiment of the present application can be applied not only to folding screens, but also to other electronic devices or non-electronic devices that require folding functions.

[0049] Please refer to Figure 3 and Figure 4 , Figure 3 is a schematic diagram of the structure of an embodiment of the electronic device of the present application in a folded state, Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of the electronic device in the embodiment. The two shells 11 of the electronic device 1 can rotate in opposite directions with the torsion assembly 30, thereby driving the flexible screen 20 to fold. There are two internal folding methods of the flexible screen 20, namely U-shaped folding and water drop-shaped folding. Among them, the torsion assembly 30 required for the U-shaped folding has a simple structure and high overall reliability; the torsion assembly 30 required for the water drop-shaped folding has a relatively complex structure and a high cost, but it can make the electronic device 1 have the characteristics of small thickness and high flatness in the folded state. The diagram of this embodiment takes a water drop-shaped folding mobile phone as an example.

[0050] When the flexible screen 20 is folded into a teardrop shape, two bending regions are formed, namely, an inner bending region 21 at the bending center and an outer bending region 22 near the bending center. The torsion assembly 30 has a middle plate 31 against the inner bending region 21, and a first support member 32 that can rotate relative to the middle plate 31. The first support member 32 is against the area between the inner bending region 21 and the outer bending region 22 to assist the flexible screen 20 in forming a teardrop shape.

[0051] Optionally, an adhesive is provided between the first support member 32 and the flexible screen 20 so that the shape of the flexible screen 20 is more natural during the bending process and the stress of the screen is small after bending, thereby reducing the damage rate of the flexible screen 20.

[0052] It should be noted that the terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0053] See also Figure 5 , Figure 5 1 is a block diagram of the structure of an embodiment of an electronic device of the present application. The structure of the electronic device 1 may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940, a sensor 950, an audio circuit 960, a wifi module 970, a processor 980, and a power supply 990. Among them, the RF circuit 910, the memory 920, the input unit 930, the display unit 940, the sensor 950, the audio circuit 960, and the wifi module 970 are respectively connected to the processor 980; the power supply 990 is used to provide power to the entire electronic device 1.

[0054] Specifically, the RF circuit 910 is used to receive and send signals; the memory 920 is used to store data instruction information; the input unit 930 is used to input information, which may specifically include a touch panel 931 and other input devices 932 such as operation buttons; the display unit 940 may include a display panel 941, etc.; the sensor 950 includes an infrared sensor, a laser sensor, etc., for detecting user approach signals, distance signals, etc.; the speaker 961 and the microphone 962 are connected to the processor 980 through the audio circuit 960 for receiving and sending sound signals; the wifi module 970 is used to receive and send wifi signals, and the processor 980 is used to process data information of the electronic device 1. For the specific structural features of the electronic device 1, please refer to the relevant description of the above embodiment, which will not be described in detail here.

[0055] Please also read Figures 6 to 9 , Figure 6 is a schematic structural diagram of an embodiment of a torsion assembly of the present application in an unfolded state, Figure 7 yes Figure 6 A schematic diagram of the structure of the torsion assembly in the folded state in the embodiment, Figure 8 yes Figure 6 The exploded structural diagram of the torsion assembly in the embodiment, Fig. 9 yes Figure 6Schematic diagram of the decomposed structure of the torsion assembly in the embodiment from another perspective. The torsion assembly 30 includes a middle plate 31, a first support member 32 and a bending mechanism 33. The two first support members 32 are respectively connected to the two bendable ends of the bending mechanism 33, so that the two first support members 32 can be bent in opposite directions to assist the flexible screen 20 to fold into a teardrop shape. The middle plate 31 is arranged between the two first support members 32 and is connected to the middle part of the bending mechanism 33 to support the inner bending area 21 of the flexible screen 20. The specific structure of the bending mechanism 33 will be expanded below.

[0056] The torsion assembly 30 may further include a cover 34 covering the middle plate 31 and the bending mechanism 33. The cover 34 and the middle plate 31 are respectively arranged on opposite sides of the bending mechanism 33. When the torsion assembly 30 is installed in the electronic device 1, the cover 34 may serve as a protective shell for the bending mechanism 33 of the middle plate 31, and may also serve as a decorative piece of the torsion assembly 30 exposed to the outside.

[0057] The middle plate 31 and the cover body 34 can be installed by means of nail hole matching and snap-fitting. Specifically, the middle plate 31 can be a strip plate, having a mounting hole 311 provided on the plate body, and a snap-fitting portion 312 provided at the end. The middle plate 31 can be snap-fitted into the groove at the corresponding position of the bending mechanism 33 by its snap-fitting portion 312, and fixed to the bending mechanism 33 by means of a nail provided in the mounting hole 311.

[0058] The cover body 34 may be a strip-shaped trough body, having a connecting column 341 and a supporting block 342 disposed on the bottom wall. The connecting column 341 may be provided with a through hole penetrating along its axial direction for installation with a nail. The cover body 34 may be abutted against the bending mechanism 33 by its connecting column 341, and fixed to the bending mechanism 33 by a nail disposed in the through hole of the connecting column 341. The cover body 34 may also be abutted against the middle plate 31 by the supporting block 342 to improve the degree of fit of the components inside the torsion assembly 30, thereby improving the overall stability.

[0059] Optionally, the torsion assembly 30 includes two bending mechanisms 33 arranged at intervals, and the opposite ends of the middle plate 31 and the opposite ends of the first support member 32 are respectively connected to the two bending mechanisms 33. The torsion assembly 30 is symmetrically arranged along the center lines of the two bending mechanisms 33 to ensure that the torsion assembly 30 can be stably folded or unfolded. Of course, in other embodiments, the torsion assembly 30 can also have one or more than two bending mechanisms 33.

[0060] It should be understood that the present embodiment only illustrates some optional schemes for assembling components inside the torsion assembly 30, and other embodiments of the present application may also adopt other schemes such as bonding to realize the assembly of various components.

[0061] See also Fig.10 , Fig.10 It is a partial structural schematic diagram of the torsion assembly of the present application.

[0062] In some embodiments, the torsion assembly 30 includes a first engagement member 35, a second engagement member 36, and a reset member 37. The first engagement member 35 is configured to rotate relative to the second engagement member 36, and the reset member 37 is used to provide the second engagement member 36 with a force against the first engagement member 35. When the first engagement member 35 rotates relative to the second engagement member 36, the second engagement member 36 can be in an engagement state with the first engagement member 35 under the action of the force provided by the reset member 37, so that the torsion assembly 30 is in a suspended state.

[0063] Specifically, the bending mechanism 33 of the torsion assembly 30 may include a base 100 and a rotating member 200 that are rotatably connected. The first gearing 35 is configured to rotate synchronously with the rotating member 200, and the rotating member 200 can be used to drive the first gearing 35 to rotate relative to the second gearing 36. For example, the first gearing 35 can be arranged on the rotating member 200, or, for another example, the first gearing 35 can be arranged on other components that are transmission-connected to the rotating member 200. The second gearing 36 is configured to rotate relative to the rotating member 200, and can be arranged on a component that rotates relative to the rotating member 200, such as the base 100 or other components that are not directly connected to the rotating member 200.

[0064] The reset member 37 may be an elastic device disposed on the side of the second meshing member 36 away from the first meshing member 35, and may be a helical compression spring, a leaf spring, or other springs that can elastically resist against the second meshing member 36, such as a round spring, a square spring, etc. The reset member 37 may be in a squeezed state, that is, the reset member 37 has a pre-elastic force, so that the second meshing member 36 is always in a state of resisting against the first meshing member 35. In other embodiments, the reset member 37 may also be other components that can provide the second meshing member 36 with a force to resist against the first meshing member 35, such as magnetic components disposed on the first meshing member 35 and the second meshing member 36, respectively.

[0065] A plurality of convex teeth are formed on the surfaces of the first gearing member 35 and the second gearing member 36 facing each other. A plurality of first convex teeth 351 are provided on the surface of the first gearing member 35 facing the second gearing member 36, and a plurality of second convex teeth 361 are provided on the surface of the second gearing member 36 facing the first gearing member 35. The plurality of first convex teeth 351 and the plurality of second convex teeth 361 are arranged around along the rotation direction, which is the direction of relative rotation of the first gearing member 35 and the second gearing member 36. When the rotating member 200 rotates driven by the housing 11, the first gearing member 35 can be driven to rotate relative to the second gearing member 36, thereby changing the matching position of the first gearing member 35 and the second gearing member 36.

[0066] The matching positions of the first meshing member 35 and the second meshing member 36 include a plurality of meshing positions and an active position during the transition from one meshing position to the next meshing position. For example, when the rotating member 200 rotates to 30 degrees and 45 degrees relative to the base 100, the first meshing member 35 and the second meshing member 36 are respectively in two adjacent meshing positions, and when the rotating member 200 rotates to any angle between 30 degrees and 45 degrees relative to the base 100, the first meshing member 35 and the second meshing member 36 are in the active position.

[0067] When the first engagement member 35 and the second engagement member 36 are in the engagement position, the torsion assembly 30 is in a suspended state. At this time, the sum of the friction torque between the first engagement member 35 and the second engagement member 36 is greater than the force of further rotation of the two shells 11, and is also greater than the rebound force of the two shells 11 returning to the original angle. Therefore, the engagement between the first engagement member 35 and the second engagement member 36 can keep the rotating member 200 in the position without being pushed by the shell 11, so that the folding device 10 is in a suspended state. After the shell 11 drives the rotating member 200 to continue to rotate, the first engagement member 35 and the second engagement member 36 are disengaged and in an active position, so that the torsion assembly 30 is in an active state. In the active state, the sum of the friction torque between the first engagement member 35 and the second engagement member 36 is less than the force of further rotation of the two shells 11. The first engagement member 35 and the second engagement member 36 can be further relatively rotated to the next engagement position under the drive of the housing 11, thereby realizing the graded suspension of the torsion assembly 30. The engagement structure of the first engagement member 35 and the second engagement member 36 will be further described below.

[0068] The friction between the first engagement member 35 and the second engagement member 36 can provide the housing 11 with a good damping feeling during the rotation process, thereby ensuring a good hand feel during the unfolding and merging process of the folding device 10 .

[0069] It should be understood that the terms used in the specification of this application and the appended claims are only for the purpose of describing specific embodiments and are not intended to limit the present application. For example, unless the context clearly indicates otherwise, the singular forms of "one", "an" and "the" are intended to include the plural forms. As another example, the terms "first" and "second" in the description of this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. As another example, the meaning of "multiple" in the description of this application is two or more, unless otherwise clearly and specifically defined.

[0070] See also Fig.11 , Fig.11 yes Fig.10Schematic diagram of the exploded structure of the torsion assembly in the embodiment. The torsion assembly 30 includes a linkage member 300 that rotates synchronously with the rotating member 200, a holding member 400 that rotates relative to the rotating member 200, and a rotating shaft 500. The rotating shaft 500 can rotate with the rotating member 200, the linkage member 300 and the holding member 400. Among them, the rotating shaft 500 can be in direct contact with the rotating member 200, or be integrally formed with the rotating member 200, or be spaced apart from the rotating member 200 and realize rotational cooperation with the rotating member 200 through other components connected to the rotating member 200. The rotating shaft 500 can be configured to rotate synchronously with the rotating member 200 or rotate relative to the rotating member 200. The rotating shaft 500 can be inserted into the linkage member 300 and the holding member 400, wherein the linkage member 300 rotates synchronously with the rotating member 200, and the holding member 400 rotates relative to the rotating member 200.

[0071] In some embodiments, the first gearing 35 may be arranged on the surface of the linkage member 300 opposite to the abutting member 400, the second gearing 36 may be arranged on the abutting member 400, and the reset member 37 is a spring that abuts against one end of the abutting member 400 away from the second gearing 36. The surface of the first gearing 35 formed with a plurality of first convex teeth 351 and the surface of the second gearing 36 formed with a plurality of second convex teeth 361 are arranged opposite to each other. The first gearing 35 may be fixedly connected to the linkage member 300, or may be integrally formed with the linkage member 300. The second gearing 36 may be fixedly connected to the abutting member 400, or may be integrally formed with the abutting member 400. In this way, the first gearing 35 and the second gearing 36 may realize relative rotation by virtue of the relative rotation relationship between the linkage member 300 and the abutting member 400.

[0072] The torsion assembly 30 may further include a first support member 32 and a second support member 38. The linkage member 300 may be transmission-connected to the rotating member 200 under the cooperation of the first support member 32 and the second support member 38 to achieve synchronous rotation of the two. The abutment member 400 is spaced apart from the first support member 32 and the second support member 38. The specific cooperation relationship between the base 100, the rotating member 200, the linkage member 300, the abutment member 400, the rotating shaft 500, the first support member 32 and the second support member 38 is not mentioned here for the time being, and will be further described later.

[0073] See also Fig.12 , Fig.12 It is a partial structural diagram of the relevant torque mechanism.

[0074] Fig.12The torque mechanism 40 shown includes an active cam 41 and a passive cam 42 which are arranged opposite to each other and can rotate relative to each other, and an elastic member 43 which abuts against a side of the passive cam 42 which is away from the active cam 41. Concave and convex surfaces are formed at opposite ends of the active cam 41 and the passive cam 42. The concave and convex surfaces of the two are in contact, and can slide closer or farther with the relative rotation of the active cam 41 and the passive cam 42.

[0075] The concave-convex surface of the active cam 41 is provided with a first convex portion 411 and a first concave portion 412, which are integrally formed with the first concave portion 412 and smoothly transition along the arc. The concave-convex surface of the passive cam 42 is provided with a second convex portion 421 and a second concave portion 422, which are integrally formed with the second concave portion 422 and smoothly transition along the arc.

[0076] When the active cam 41 rotates relative to the passive cam 42 until the top of the first convex portion 411 abuts against the top of the second convex portion 421, the compression amount of the elastic member 43 reaches a preset value, so that the friction torque between the passive cam 42 and the active cam 41 reaches a degree sufficient to limit the folding or unfolding of the torque mechanism 40, thereby placing the torque mechanism 40 in a suspended state. When the active cam 41 rotates relative to the passive cam 42 until the top of the first convex portion 411 is separated from the top of the second convex portion 421, the torque mechanism 40 leaves the suspended state.

[0077] In the process that the active cam 41 rotates in one direction relative to the passive cam 42, the torsion mechanism 40 is in a suspended state from the time when the active cam 41 rotates to the time when the top of the first convex portion 411 begins to abut against the top of the second convex portion 421 to the time when the active cam 41 rotates to the time when the top of the first convex portion 411 begins to separate from the top of the second convex portion 421. In other words, the folding angle of the torsion mechanism 40 corresponding to the suspended state is continuous, and the folding angle range of the torsion mechanism 40 corresponding to the state in which the top of the first convex portion 411 abuts against the top of the second convex portion 421 is the suspended angle range. The size of the suspended angle range is related to the curvature of the first convex portion 411 and the second convex portion 421. The larger the width of the top of the first convex portion 411 and the top of the second convex portion 421, the larger the suspended angle range. The torsion mechanism 40 can achieve suspended state at almost any angle within the suspended angle range.

[0078] See also Fig.13 , Fig.13 It is a partial structural schematic diagram of an embodiment of a torsion assembly of the present application.

[0079] In some embodiments, the torsion assembly 30 includes an active member 331, a passive member 332, a first meshing member 35, a second meshing member 36, and a reset member 37. The active member 331 can rotate relative to the passive member 332. The torsion assembly 30 can be folded or unfolded by the rotation of the active member 331 relative to the passive member 332. The first meshing member 35 is configured to rotate synchronously with the active member 331, and the second meshing member 36 is disposed on the passive member 332, and specifically can be fixedly connected to the passive member 332 or integrally formed with the passive member 332. The reset member 37 is used to provide a force for the second meshing member 36 to resist the first meshing member 35. For example, the reset member 37 is a spring that resists the side of the passive member 332 away from the first meshing member 35, and the spring can be in a pre-compressed state.

[0080] Among them, the active member 331 and the passive member 332 are not limited to a certain device of the torque assembly 30. For example, the active member 331 is the above-mentioned rotating member 200, the linkage member 300 and the rotating member 200 rotate synchronously through a transmission connection, and the first meshing member 35 is arranged on the linkage member 300; for another example, the active member 331 is the above-mentioned linkage member 300, and the first meshing member 35 is arranged on the linkage member 300, so that the first meshing member 35 can rotate synchronously with the linkage member 300; for another example, the active member 331 is the rotating member 200, and the first meshing member 35 is arranged on the rotating member 200. The passive member 332 can be the above-mentioned abutting member 400, and the second meshing member 36 is arranged on the side of the abutting member 400 facing the first meshing member 35. Similarly, the passive member 332 can also be other devices. The optional devices of the active member 331 and the passive member 332 will be further explained below.

[0081] It should be understood that the relative rotation of the active component 331 and the passive component 332 may be that one of them rotates while the other does not rotate, or that both rotate in opposite directions. The specific method may be determined according to the requirements of different embodiments.

[0082] The first meshing member 35 can change the meshing state with the second meshing member 36 under the drive of the active member 331. The first meshing member 35 and the second meshing member 36 can switch from one meshing position to the next meshing position through the active position, thereby realizing the graded suspension of the torsion assembly 30. Among them, a plurality of first convex teeth 351 are provided on the surface of the first meshing member 35 facing the second meshing member 36, and a plurality of second convex teeth 361 are provided on the surface of the second meshing member 36 facing the first meshing member 35. The plurality of first convex teeth 351 and the plurality of second convex teeth 361 are all arranged around along the rotation direction, and the rotation direction is the direction in which the first meshing member 35 rotates relative to the second meshing member 36 under the drive of the active member 331. The meshing state of the first meshing member 35 and the second meshing member 36 is realized by the cooperation of the first convex teeth 351 and the second convex teeth 361.

[0083] Specifically, the first protruding tooth 351 and the second protruding tooth 361 are both shaped like mountain peaks. The top of the first protruding tooth 351 is the first peak 3511, the portion between the top of the first protruding tooth 351 and the bottom of the first protruding tooth 351 is the first peak waist 3512, and the bottoms of two adjacent first protruding teeth 351 are connected to form a first peak valley 3513. The top of the second protruding tooth 361 is the second peak 3611, the portion between the top of the second protruding tooth 361 and the bottom of the second protruding tooth 361 is the second peak waist 3612, and the bottoms of two adjacent second protruding teeth 361 are connected to form a second peak valley 3613. Among them, the first peak 3511 is adapted to the second peak valley 3613, and the second peak 3611 is adapted to the first peak valley 3513.

[0084] Optionally, when the first peak 3511 abuts against the second valley 3613, the first engagement member 35 and the second engagement member 36 are in the engagement position. At this time, the first engagement member 35 is engaged with the second engagement member 36, and the first waist 3512 extending from the first peak 3511 abuts against the corresponding second waist 3612, so that the friction torque between the first engagement member 35 and the second engagement member 36 can achieve the suspension of the torsion assembly 30. The first peaks 3511 of the plurality of first convex teeth 351 can synchronously abut against the corresponding second valleys 3613.

[0085] When the first peak 3511 abuts against the second peak waist 3612, and the first peak 3511 abuts against the second peak 3611, the first engagement member 35 and the second engagement member 36 are both in the active position. At this time, the first engagement member 35 and the second engagement member 36 are out of engagement, and the friction torque between the two decreases, so that the torsion assembly 30 is out of the suspended state and enters the active state.

[0086] Among them, the first engaging member 35 can be driven by the active member 331, and switch from a state where the first peak 3511 and a second peak valley 3613 are abutted against each other, to a state where the first peak 3511 and a second peak waist 3612 are abutted against each other, to a state where the first peak 3511 and the second peak 3611 are abutted against each other, and to a state where the first peak 3511 and the next second peak waist 3612 are abutted against each other, thereby realizing the graded suspension of the torque assembly 30.

[0087] It should be noted that, the “one” and “next” in this article refer to two adjacent devices or parts. For example, the “one second waist 3612” and the “next second waist 3612” mentioned above are two adjacent second waists 3612, which can be two second waists 3612 extending from a second peak 3611 to both sides, or two second waists 3612 extending from two second peaks 3611 to different sides respectively.

[0088] The torsion assembly 30 provided in the embodiment of the present application is mainly different from the torsion mechanism 40 in that the torsion mechanism 40 can achieve hovering at continuous angles within a certain range, while the torsion assembly 30 achieves hovering at a few specific angles; the torsion mechanism 40 is in a hovering state when the top of the first protrusion 411 abuts against the top of the second protrusion 421, while the torsion assembly 30 is in a hovering state when the first peak 3511 abuts against the second valley 3613, that is, when the first engagement member 35 is engaged with the second engagement member 36.

[0089] The torsion mechanism 40 that can hover at a continuous angle, during the repeated opening and closing process, due to the large friction torque between the active cam 41 and the passive cam 42, the cam has a high wear rate in long-term use, which will cause the opening and closing feel of the torsion mechanism 40 to gradually decrease, and the continuous hovering angle range will gradually decrease, such as from 30 degrees to 120 degrees to 50 degrees to 100 degrees, resulting in a decrease in user experience. In addition, the continuous hovering function of the torsion mechanism 40 requires that there is always a large friction torque between the active cam 41 and the passive cam 42, so the elastic member 43 needs to provide a sufficiently large axial force, which will also reduce the service life of the torsion mechanism 40.

[0090] The embodiment of the present application improves the convex tooth structure that cooperates with the first meshing member 35 and the second meshing member 36 to realize the hovering function, so that the cooperation position of the first meshing member 35 and the second meshing member 36 includes multiple meshing positions and active positions during the transition from one meshing position to the next meshing position. When the first meshing member 35 and the second meshing member 36 are in the meshing position, the torsion assembly 30 can be in a hovering state. The first meshing member 35 can change the meshing state with the second meshing member 36 under the drive of the active member 331, and the first meshing member 35 and the second meshing member 36 can switch from one meshing position to the next meshing position through the active position, thereby realizing the graded hovering of the torsion assembly 30.

[0091] Through this design, the torsion assembly 30 improves the continuous angle suspension structure into a few specific angle suspension structures. On the one hand, it can reduce the wear rate of the convex teeth of the first engaging member 35 and the second engaging member 36 during the repeated opening and closing of the product. On the other hand, it can also avoid the excessive axial force of the spring serving as the reset member 37, which reduces the fatigue failure life of the product, thereby extending the service life of the torsion assembly 30.

[0092] Regarding the meshing structure design of the first meshing member 35 and the second meshing member 36, please refer to Fig.13 See also Fig.14 and Fig.15 , Fig.14 is a schematic structural diagram of a first engaging member and a second engaging member provided in an embodiment of a torsion assembly of the present application, Fig.15It is a structural schematic diagram of a first engaging member and a second engaging member in an engaged position provided by an embodiment of a torsion assembly of the present application.

[0093] In some embodiments, the ratio a / b of the width a of the first peak 3511 to the height b of the first protruding tooth 351 may be between 1 / 10 and 2 / 3, such as 1 / 6, 4 / 15, 2 / 5, 1 / 2, 3 / 5, etc. This parameter may be used to define the degree of "pointiness" of the first protruding tooth 351. The ratio of the width of the second peak 3611 to the height of the second protruding tooth 361 may also be between 1 / 10 and 2 / 3, such as 1 / 6, 4 / 15, 2 / 5, 1 / 2, 3 / 5, etc. Through this design, when the first gearing member 35 rotates relative to the second gearing member 36 until the first peak 3511 and the second peak 3611 abut against each other, the first gearing member 35 may further rotate relative to the second gearing member 36. In this way, the state in which the first peak 3511 abuts against the second peak 3611 corresponds to the first gearing member 35 and the second gearing member 36 being in the active position.

[0094] The climbing angle c of the second convex tooth 361 may be within the range of 90 degrees to 150 degrees, such as 100 degrees, 120 degrees, 140 degrees, etc., so that when the first peak 3511 abuts against the second peak waist 3612, the first engagement member 35 can further rotate relative to the second engagement member 36, and the first peak 3511 can slide along the second peak waist 3612 to the second peak valley 3613. Similarly, the climbing angle of the first convex tooth 351 may also be within the range of 90 degrees to 150 degrees, such as 100 degrees, 120 degrees, 140 degrees, etc., so that when the second peak 3611 abuts against the first peak waist 3512, the second engagement member 36 can further rotate relative to the first engagement member 35, and the second peak 3611 can slide along the first peak waist 3512 to the first peak valley 3513. Thus, the state in which the first peak 3511 abuts against the second peak waist 3612 and the state in which the second peak 3611 abuts against the first peak waist 3512 correspond to the first engaging member 35 and the second engaging member 36 being in the active position.

[0095] Through the above design, when the first meshing member 35 and the second meshing member 36 are relatively rotated to the position where the first peak 3511 abuts against the second peak valley 3613 and the second peak 3611 abuts against the first peak valley 3513, i.e., the meshing position, the torsion assembly 30 is in a suspended state. At this time, the first convex teeth 351 and the second convex teeth 361 are staggered with each other, the engagement amount is large, and there is a large friction force between the first peak waist 3512 and the second peak waist 3612, so that the friction torque between the first meshing member 35 and the second meshing member 36 is sufficient to realize the suspension of the torsion assembly 30. When the first meshing member 35 and the second meshing member 36 are in the active position, the friction torque between the two is small and insufficient to realize the suspension, and they can rotate relatively smoothly.

[0096] The first protruding tooth 351 and the second protruding tooth 361 can be designed to have the same or similar structures to increase the friction torque between the first meshing member 35 and the second meshing member 36 in the meshing position. The width of the first peak 3513 can be equal to or slightly larger than the width of the second peak 3611, and the width of the second peak 3613 can be equal to or slightly larger than the width of the first peak 3511. The ratio of the width of the first peak 3511 to the height of the first protruding tooth 351 can be equal to or substantially equal to the ratio of the width of the second peak 3611 to the height of the second protruding tooth 361. The climbing angle of the first protruding tooth 351 can be equal to or substantially equal to the climbing angle of the second protruding tooth 361.

[0097] In other embodiments, the engagement structure of the first engagement member 35 and the second engagement member 36 may also be designed in other forms. For example, when the first peak 3511 abuts against the second peak valley 3613 , the second peak 3611 is located between two adjacent first peak waists 3512 and spaced apart from the first peak valley 3513 .

[0098] Optionally, the first convex teeth 351 of the first meshing member 35 and the second convex teeth 361 of the second meshing member 36 are arranged in sequence without any interval. When the first meshing member 35 and the second meshing member 36 are in the meshing position, there is almost no gap between the first convex teeth 351 and the second convex teeth 361, and they are in a tightly meshed state (such as Fig.15 As shown in FIG. 1 , the first gearing 35 and the second gearing 36 are engaged with each other, so that the friction torque between the first gearing 35 and the second gearing 36 is increased. When the first gearing 35 rotates relative to the second gearing 36 until both are in the active position, a gap is formed between the first protruding tooth 351 and the second protruding tooth 361, so that the friction torque between the first gearing 35 and the second gearing 36 is reduced.

[0099] Through the above design, the torsion assembly 30 can realize multi-level suspension by using a mechanism form similar to gear meshing, which solves the problem that the torsion mechanism 40 of the cam-type suspension structure cannot be stably suspended after being folded too many times. The multiple meshing positions of the first meshing member 35 and the second meshing member 36 correspond to the multiple suspension angles of the torsion assembly 30 to realize the graded suspension of the torsion assembly 30. The specific suspension angle of the torsion assembly 30 can be designed as the suspension angle commonly used by the folding device 10. For example, when the car door is opened, it often stops at several fixed angles, so the multiple suspension angles of the applied torsion assembly 30 can be designed as several commonly used parking angles of the car door. For another example, the torsion assembly 30 applied to the folding screen mobile phone can design the graded suspension angle to several fixed angles with the highest frequency of mobile phone use. In this way, the torsion assembly 30 is changed from the traditional continuous angle suspension to the structure of suspension at several fixed commonly used angles, which can avoid excessive spring axial force, reduce the fatigue failure life of the product, or accelerate wear and affect the consistency of the front and back experience.

[0100] The first gearing member 35 and the second gearing member 36 of the embodiment of the present application can achieve the above-mentioned graded hovering effect by means of the relatively rotating active member 331 and the passive member 332. It can be understood that the specific arrangement positions of the first gearing member 35 and the second gearing member 36 in the torsion assembly 30 are not limited to the above-mentioned embodiment. In theory, all areas of the torsion assembly 30 where there is motion coordination can adopt the above-mentioned coordination structure of the first gearing member 35 and the second gearing member 36 to achieve the multi-level hovering effect.

[0101] Please also read Fig.16 and Fig.17 , Fig.16 1 is a schematic diagram of the rotational cooperation structure of the rotating shaft and the linkage member provided in an embodiment of the torque assembly of the present application. Fig.17 This is a schematic diagram of the rotational cooperation structure of the rotating shaft and the abutting member provided in an embodiment of the torque assembly of the present application. During the relative rotation of the active member 331 and the passive member 332, a convex point friction cooperation can also be formed between any two components that have rotational cooperation to improve the rotational stability.

[0102] In some embodiments, the rotating shaft 500 is disposed through the linkage member 300 and is configured to rotate relative to the linkage member 300. The rotating shaft 500 forms a convex point friction fit with the linkage member 300. The convex point friction refers to the convex points that contact each other between the rotating shaft 500 and the linkage member 300, which can be used to increase the rotation resistance when they rotate relative to each other.

[0103] A first convex block 510 for realizing convex point friction fit is provided on at least one of the outer circumference of the rotating shaft 500 and the inner circumference of the linkage member 300. For example, a first convex block 510 (such as Fig.16 As shown in FIG. 1 , the first protrusion 510 abuts against the inner periphery of the linkage member 300, so that when the shaft 500 and the linkage member 300 rotate relative to each other, the first protrusion 510 can rub against the linkage member 300 to increase the rotation resistance. It can be understood that the first protrusion 510 can also be set on the inner periphery of the linkage member 300 and abut against the outer periphery of the shaft 500 to achieve a similar effect. Alternatively, the first protrusion 510 is provided on both the outer periphery of the shaft 500 and the inner periphery of the linkage member 300, and the first protrusion 510 on one abuts against the other, or the first protrusions 510 on both abut against each other to achieve the effect of increasing the rotation resistance.

[0104] In some embodiments, the rotating shaft 500 is disposed through the abutment 400 and is configured to rotate relative to the abutment 400. The rotating shaft 500 can form a convex point friction fit with the abutment 400. Among them, at least one of the outer circumference of the rotating shaft 500 and the inner circumference of the abutment 400 is provided with a first convex block 510 for achieving the convex point friction fit. For example, the outer circumference of the rotating shaft 500 is provided with a first convex block 510 (such as Fig.17As shown in FIG. 1 , the first protrusion 510 abuts against the inner periphery of the abutment 400, so that when the shaft 500 and the abutment 400 rotate relative to each other, the first protrusion 510 can rub against the abutment 400 to increase the rotation resistance. It can be understood that the first protrusion 510 can also be set on the inner periphery of the abutment 400 and abut against the outer periphery of the shaft 500 to achieve a similar effect. Alternatively, the first protrusion 510 is provided on both the outer periphery of the shaft 500 and the inner periphery of the abutment 400, and the first protrusion 510 on one abuts against the other, or the first protrusions 510 on both abut against each other to achieve the effect of increasing the rotation resistance.

[0105] In the embodiment of the present application, a plurality of first protrusions 510 may be arranged in sequence and spaced apart along the circumference of the rotating shaft 500 .

[0106] See also Fig.18 , Fig.18 It is a schematic diagram of the rotational cooperation structure between the rotating member and the base provided in an embodiment of the torque assembly of the present application.

[0107] In some embodiments, the rotating member 200 and the rotating mating surface of the base 100 form a convex point friction fit. Among them, a second convex block 210 is provided on at least one of the two surfaces of the rotating member 200 and the base 100 that are opposite to each other. For example, the second convex block 210 can be provided on the surface of the rotating member 200 that is rotatably matched with the base 100, and abuts against the base 100. For another example, the second convex block 210 can be provided on the surface of the base 100 that is rotatably matched with the rotating member 200, and abuts against the rotating member 200. For another example, the second convex block 210 is provided on the surfaces of the rotating member 200 and the base 100 that are rotatably matched with each other, and the second convex blocks 210 on the surfaces of the two are in abutment with each other.

[0108] The base 100 may be provided with an arc groove, and the rotating member 200 may have an arc block disposed in the arc groove, thereby forming a rotational fit with the base 100. The second protrusions 210 may be arranged in sequence in the arc direction of the arc groove and the arc block to increase the rotational resistance when the base 100 and the rotating member 200 rotate relative to each other.

[0109] It is understandable that the top of the convex portion used to form the convex point friction fit in the embodiment of the present application is arc-shaped so that the convex portion can slide and fit with the surface that it contacts. The convex point friction fit can be formed between any two components that can rotate relative to each other in the torsion assembly 30, and is not limited to the above embodiment. The convex point friction fit can increase the rotation resistance when the two components rotate relative to each other, which is conducive to improving the rotation feel of the torsion assembly 30 and improving the rotation stability of the torsion assembly 30.

[0110] Please refer to Fig.18 and Fig.19 , Fig.19It is a schematic diagram of a partial decomposition structure provided by an embodiment of a torsion assembly of the present application.

[0111] In some embodiments, the base 100 of the torsion assembly 30 includes a first base body 110 and a second base body 120. The first base body 110 and the second base body 120 may be provided with a snap-fit ​​structure, and the two may be snap-fitted and assembled when assembled, and may be further fixedly connected by nails. The two rotating members 200 of the torsion assembly 30 may be assembled between the first base body 110 and the second base body 120 when the two are separated, and respectively rotate with the two, and then realize rotational cooperation with the base 100 after the two form the base 100.

[0112] Specifically, the rotating member 200 is provided with a rotating portion 220 on opposite sides, and the rotating portion 220 may be in an arc shape. The first base 110 and the second base 120 are provided with grooves of corresponding shapes that can be rotatably matched with the rotating portion 220. The rotating portions 220 on both sides of the rotating member 200 are respectively installed in the grooves of the first base 110 and the second base 120, so that the rotating member 200 can form a rotational match with the first base 110 and the second base 120. Among them, a rotating shaft portion 230 may be convexly provided at one end of the rotating portion 220, and the two rotating shaft portions 230 convexly provided on the rotating portions 220 on both sides of the rotating member 200 are coaxially arranged, so that the rotating member 200 can rotate relative to the base 100 along the axis where the rotating shaft portion 230 is located.

[0113] In addition, the torsion assembly 30 may further include a stopper 600 disposed on one side of the base 100, and the stopper 600 is used to limit the rotation direction of the rotating member 200. Specifically, the stopper 600 may be a baffle plate that is bent, such as an L-shaped baffle plate, one surface of which may be disposed facing the side surface of the base 100, and another surface that is bent and extended from the surface may be disposed facing the bottom surface of the base 100. The stopper 600 may be connected to the side surface of the base 100, and the specific connection method includes but is not limited to a snap connection, a pin connection, etc.

[0114] See also Fig. 20 , Fig. 20 yes Fig.19 A partial structural schematic diagram of the torsion assembly in another exploded state in the embodiment.

[0115] A rotating member 200 is respectively provided on both sides of the base 100 of the torsion assembly 30, and each rotating member 200 is transmission-connected to a linkage member 300, so that the linkage member 300 can rotate synchronously with the rotating member 200. The torsion assembly 30 also includes two synchronizers 700 arranged between the two linkage members 300. The linkage members 300 and the synchronizers 700 rotate one by one. The two synchronizers 700 can rotate synchronously in opposite directions, so as to realize the synchronous rotation of the two linkage members 300, thereby making the two rotating members 200 respectively transmission-connected to the two linkage members 300 also rotate synchronously in opposite directions.

[0116] Among them, the two synchronizers 700 can have gear structures that mesh with each other, and the part of the linkage member 300 facing the synchronizer 700 is provided with a convex tooth portion 310 adapted to the gear structure, and the convex tooth portion 310 is meshed with the gear structure of the synchronizer 700, so that when one linkage member 300 rotates, the convex tooth portion 310 of the two linkage members 300 and the gear structure of the two synchronizer members 700 can cooperate to make the other linkage member 300 rotate synchronously in the opposite direction, and then the torque assembly 30 can be folded or unfolded.

[0117] It is understandable that the synchronous rotation design of the torsion assembly 30 is not limited to the above embodiments. For example, the torsion assembly 30 can adopt other gear transmission structures to achieve similar effects; for example, the torsion assembly 30 can adopt a spiral synchronous structure to achieve similar effects.

[0118] In addition, based on the characteristic that the base 100 of the torsion assembly 30 rotates relative to the rotating member 200, it can be used as a positioning structure to connect with the shaft 500 and other shaft bodies, so that the components on both sides of the shaft body (such as two linkage members 300) can stably rotate synchronously. Specifically, the shaft 500 can be inserted into the linkage member 300 and inserted into the base 100. The middle part of the synchronous member 700 can be formed with a shaft body extending from the gear structure, and the shaft body can be inserted into the base 100. The torsion assembly 30 can also include a first positioning member 410 assembled on the base 100, and the first positioning member 410 is provided with an axial hole corresponding to the shaft 500 and other shaft bodies assembled on the base 100. The shaft bodies such as the shaft 500 are inserted into the base 100 through the axial hole of the first positioning member 410 to improve the accuracy of the shaft bodies such as the shaft 500 during assembly. The first positioning member 410 may be provided with a boss, and a corresponding portion of the base 100 may be provided with a positioning hole adapted to the boss, so that the first positioning member 410 may be assembled on the base 100 via the boss to improve the accuracy of the assembly position.

[0119] Among them, the rotating shaft 500 can be configured to rotate synchronously with the linkage part 300, and the specific structure adopted is not limited. The part of the rotating shaft 500 located in the linkage part 300 may form a cross-section that is engaged with the linkage part 300, for example, the part is a rectangular column and contacts the rectangular hole wall formed inside the linkage part 300; or the part of the rotating shaft 500 located in the linkage part 300 may form a threaded fit with the linkage part 300.

[0120] The rotating shaft 500 can also be configured to rotate relative to the linkage member 300. The specific structure adopted can be that the rotating shaft 500 is inserted between the end of the base 100 and the base 100 to form a relatively fixed matching structure during rotation, so that when the linkage member 300 rotates with the rotating member 200, the rotating shaft 500 can form a relative rotation with the linkage member 300. The matching structure formed between the rotating shaft 500 and the base 100 can refer to the matching structure of the rotating shaft 500 and the linkage member 300 rotating synchronously, and will not be repeated here.

[0121] See also Fig.21 , Fig.21 yes Fig.19 A partial structural schematic diagram of the torsion assembly in another exploded state in the embodiment.

[0122] The torque assembly 30 may further include a second positioning member 420, which is formed with an axial hole corresponding to the rotating shaft 500 and a convex block corresponding to the synchronous member 700. The abutting member 400 is also provided with an axial hole corresponding to the rotating shaft 500 in the same axial direction, and may also be provided with an axial hole corresponding to the shaft body of the synchronous member 700 in another axial direction. The two rotating shafts 500 respectively penetrated through the two linkage members 300 may be penetrated through the corresponding axial holes on the abutting member 400 and the second positioning member 420 to achieve accurate assembly. The shaft body of the synchronous member 700 may pass through the axial hole of the abutting member 400 and abut against the convex block of the second positioning member 420 to improve the overall tightness of the torque assembly 30.

[0123] The reset member 37 of the torsion assembly 30 can be a spring disposed between the abutting member 400 and the second positioning member 420, and is sleeved on the rotating shaft 500. The two ends of the reset member 37 respectively abut against the abutting member 400 and the second positioning member 420, and a certain amount of compression is formed, so that no matter whether the torsion assembly 30 is in the unfolded state or the folded state, the reset member 37 can provide the abutting member 400 with a force to abut against the linkage member 300, so that the second meshing member 36 disposed on the abutting member 400 can always abut against the first meshing member 35. It should be noted that the meshing suspension structure adopted in the embodiment of the present application is not limited to this embodiment, which will be further described later.

[0124] The torque assembly 30 also includes a stopper 430 disposed on a side of the second positioning member 420 away from the support member 400. The stopper 430 is disposed at one end of the base 100 of the rotating shaft 500, and is used to prevent the components through which the rotating shaft 500 passes from being separated from the rotating shaft 500 along the axial direction of the rotating shaft 500. Specifically, the stopper 430 can be a ring body clamped at the end of the rotating shaft 500, and the end of the rotating shaft 500 is provided with a slot corresponding to the ring body, and the stopper 430 can be clamped in the slot to achieve the above-mentioned limiting effect. The ring body can be a C-shaped ring for easy installation or disassembly. Of course, the stopper 430 can also be designed in other shapes, and the cooperation between it and the rotating shaft 500 is not limited to this embodiment. For example, the stopper 430 can be a cap threadedly connected to the end of the rotating shaft 500.

[0125] The torque assembly 30 further includes a friction member 440 sleeved on the rotating shaft 500. The friction member 440 is used to rub against the rotating shaft 500 when the rotating shaft 500 rotates, so as to increase the rotation damping of the rotating shaft 500 and improve the rotation stability. The friction member 440 can be annular, and can be provided in plurality, and is tightly stacked between the second positioning member 420 and the stop member 430.

[0126] See also Fig. 22 , Fig. 22 yes Fig.19 A partial structural schematic diagram of the torsion assembly in another exploded state in the embodiment.

[0127] The first support member 32 and the second support member 38 are provided on both side edges of the bending mechanism 33 of the torsion assembly 30. The first support member 32 and the second support member 38 are both connected to the rotating member 200 and the linkage member 300, and can be used to drive the rotating member 200 and the linkage member 300 to rotate synchronously. Among them, the first support member 32 and the second support member 38 can both be in the shape of a strip plate. The rotating member 200 and the linkage member 300 are both arranged between the first support member 32 and the second support member 38. In the folding device 10, the second support member 38 can be fixedly connected to the shell 11, the first support member 32 can be located on the side of the rotating member 200 away from the second support member 38, and the first support member 32 is connected to the second support member 38, so that the folding device 10 can apply force to the first support member 32 and the second support member 38 through the shell 11 to switch between the folded state and the unfolded state.

[0128] For the matching relationship between the first support member 32, the second support member 38, the rotating member 200 and the linkage member 300, please refer to Figure 23 to Figure 25 , Fig.23 It is a partial structural diagram of an embodiment of a torsion assembly of the present application. Fig.24 yes Fig.23 A schematic diagram of a partially exploded structure of a torsion assembly in an embodiment, Fig.25 yes Fig.23A schematic cross-sectional view of the torsion assembly in an embodiment.

[0129] The first support member 32 of the torsion assembly 30 is provided with two opposite first matching grooves 321, and the opposite ends of the second support member 38 are provided with first matching portions 381 corresponding to the first matching grooves 321, and the first matching portions 381 can be assembled in the first matching grooves 321 to achieve rotational matching between the first support member 32 and the second support member 38. The first matching grooves 321 can be arc-shaped grooves, and the first matching portions 381 are corresponding arc blocks. When the first support member 32 and the second support member 38 rotate relative to each other, the first matching portions 381 can slide relative to the first matching grooves 321 along the arc direction.

[0130] The second support member 38 may be provided with a plurality of second matching holes 382, ​​which may be designed as through holes or blind holes as required. The rotating member 200 is provided with at least one second matching portion 201, which may be a column with an axial hole. The rotating member 200 may achieve rotational matching with the second support member 38 by means of a second matching shaft 202 assembled in the second matching portion 201 and the second matching hole 382.

[0131] The second support member 38 may be provided with two opposite third matching grooves 383, which are sliding grooves for realizing the movement and matching with the linkage member 300. The linkage member 300 is provided with third matching parts 301 at opposite ends, respectively, and the third matching parts 301 are sliders adapted to the third matching grooves 383. The third matching grooves 383 may be designed as rectangular grooves, and the third matching parts 301 are correspondingly designed as rectangular sliders. The linkage member 300 may assemble the third matching parts 301 in the third matching grooves 383 to realize the movement and matching with the second support member 38.

[0132] For further information on the matching relationship between the rotating member 200, the linkage member 300 and the first supporting member 32, please refer to Figure 26 to Figure 28 , Fig.26 It is a partial structural diagram of an embodiment of a torsion assembly of the present application. Fig. 27 yes Fig.26 A schematic diagram of a partially exploded structure of a torsion assembly in an embodiment, Fig.28 yes Fig.26 A schematic cross-sectional view of the torsion assembly in an embodiment.

[0133] The rotating member 200 of the torsion assembly 30 is provided with a fourth matching hole 203, and the first support member 32 is provided with a fourth matching portion 322 which is directly opposite to the fourth matching hole 203, and the fourth matching portion 322 can be a through hole or a blind hole. The rotating member 200 can realize the constraint matching with the first support member 32 by using the fourth matching shaft 204 assembled in the fourth matching hole 203 and the fourth matching portion 322. It should be noted that this constraint between the rotating member 200 and the first support member 32 is a virtual constraint, which is used to limit the first support member 32, prevent the torsion assembly 30 from having a movement deviation, and cause the first support member 32 to warp during the flattening process, which is beneficial to avoid creases on the flexible screen 20 of the electronic device 1.

[0134] The linkage member 300 may be provided with a fifth matching portion 302, which is a groove with a through hole on the groove wall. The first support member 32 is provided with a fifth matching groove 323 at the portion of the through hole of the fifth matching portion 302, and the fifth matching groove 323 is an arc groove. The torque assembly 30 has a fifth matching member 303, which includes a block accommodated in the fifth matching portion 302 and a cylinder extending from the block. The through hole on the groove wall of the fifth matching portion 302 of the cylinder abuts against the groove wall of the fifth matching groove 323, so as to realize the cam matching between the linkage member 300 and the first support member 32.

[0135] Thus, the first support member 32 and the second support member 38 can cooperate to form a rotating pair (low pair), the first support member 32 and the linkage member 300 can cooperate to form a cam pair (high pair), the second support member 38 and the linkage member 300 can cooperate to form a moving pair (low pair), the second support member 38 and the rotating member 200 can cooperate to form a rotating pair (low pair), the linkage member 300 and the base 100 can cooperate to form a rotating pair (low pair), and the rotating member 200 and the base 100 can cooperate to form a rotating pair (low pair), so that the torsion assembly 30 can be in a teardrop shape in the folded state. It can be seen that the degree of freedom of the mechanism of the torsion assembly 30 is F=3n-2PL-Ph=3×4-2×5-1=1, and there is a definite motion relationship, wherein n is the number of active components of the torsion assembly 30 (rotating member 200, linkage member 300, first support member 32 and second support member 38), PL is the number of low pair constraints, and Ph is the number of high pair constraints.

[0136] When the first support member 32 and the second support member 38 on one side of the torsion assembly 30 are pushed by an external force, the rotating member 200 and the linkage member 300 on this side can be driven to rotate synchronously, and the rotating member 200 and the linkage member 300 on the other side of the torsion assembly 30 can be driven by the synchronous member 700 synchronously connected to the linkage member 300, thereby driving the first support member 32 and the second support member 38 on the other side of the torsion assembly 30, so that the components on both sides of the torsion assembly 30 can be folded toward each other or unfolded away from each other.

[0137] During the folding or unfolding process, the engagement state of the first engagement member 35 and the second engagement member 36 that rotate relative to each other can change accordingly. When the first engagement member 35 and the second engagement member 36 reach the engagement position, the components on both sides of the torsion assembly 30 can maintain the current position without being subjected to new external forces, forming a hovering state. When the components on both sides of the torsion assembly 30 are subjected to new external forces, the first engagement member 35 and the second engagement member 36 are transformed from the engagement position to the active position. At this time, the torsion assembly 30 cannot be hovered until the first engagement member 35 and the second engagement member 36 are transformed from the active position to the next engagement position, and the torsion assembly 30 can enter the hovering state again.

[0138] Among them, multiple meshing positions correspond to multiple hovering angles of the torsion assembly 30, and the convex tooth structure of the first meshing member 35 and the second meshing member 36 can be adjusted accordingly according to the required hovering angle, so that the torsion assembly 30 can only hover at a preset specific angle, thereby reducing the wear rate of the first meshing member 35 and the second meshing member 36 during the repeated opening and closing process of the torsion assembly 30, and extending the service life of the torsion assembly 30.

[0139] For the installation positions of the first engaging member 35 and the second engaging member 36, please refer to Figure 29 to Figure 31 , Fig.29 is a partial cross-sectional structural diagram of an embodiment of a torsion assembly of the present application, Fig.30 It is a schematic diagram of a partially exploded structure provided by an embodiment of a torsion assembly of the present application. Fig.31 It is a partial cross-sectional structural schematic diagram provided by another embodiment of the torsion assembly of the present application.

[0140] One of the first engagement member 35 and the second engagement member 36 of the torsion assembly 30 may be disposed on the outer periphery of the rotating shaft 500, and the other may be disposed on another member that rotates relative to the rotating shaft 500, for example. Fig.29 The linkage member 300 shown in FIG. Fig.31 As the rotating shaft 500 and the component rotate relative to each other, the first engagement member 35 and the second engagement member 36 can be switched from the active position to the engaged position, or from the engaged position to the active position, thereby achieving graded suspension of the torsion assembly 30.

[0141] In some embodiments, one of the rotating member 200 and the linkage member 300 is the active member 331, the rotating shaft 500 is the passive member 332, and the rotating shaft 500 is configured to rotate relative to the rotating member 200. The rotating shaft 500 is disposed through the linkage member 300, and the linkage member 300 rotates synchronously with the rotating member 200. The second gearing member 36 is disposed on the outer periphery of the rotating shaft 500, and the first gearing member 35 is disposed on the inner periphery of the linkage member 300 (e.g., Fig.29). The first gearing member 35 is disposed opposite to the second gearing member 36. The reset member 37 is a spring disposed in the rotating shaft 500, and the spring abuts against an end of the second gearing member 36 away from the first gearing member 35, so that the second gearing member 36 can abut against the first gearing member 35.

[0142] The first engagement member 35 can be integrally formed with the linkage member 300 and formed on the inner periphery of the linkage member 300. The second engagement member 36 can be a long strip disposed on the outer periphery of the rotating shaft 500. The reset member 37 can be disposed in the rotating shaft 500 and abut against the second engagement member 36.

[0143] Specifically, the rotating shaft 500 may be provided with a through hole 501, and the two ends of the through hole 501 are respectively connected to the opposite sides of the outer circumference of the rotating shaft 500. The two second gearing members 36 are respectively arranged at the two ends of the through hole 501 and protrude from the outer circumference of the rotating shaft 500. The reset member 37 is accommodated in the through hole 501, and the two ends thereof are respectively abutted against the two second gearing members 36. Thus, when the rotating shaft 500 and the linkage member 300 rotate relative to each other until the top of the convex teeth of the second gearing member 36 abuts against the top of the convex teeth of the first gearing member 35, the second gearing member 36 can squeeze the reset member 37 and shrink into the through hole 501. As the linkage member 300 rotates further, the second gearing member 36 moves out of the through hole 501 under the abutment of the reset member 37, and the top of the convex teeth of the second gearing member 36 can abut against the bottom of the convex teeth of the first gearing member 35, so that the torsion assembly 30 can enter a suspended state.

[0144] Each second engagement member 36 forms a convex tooth. The torque assembly 30 may be provided with a plurality of second engagement members 36 to cooperate to form a plurality of convex teeth, and the number of the second engagement members 36 may be two or more. For example, the rotating shaft 500 may be provided with a plurality of through holes 501 spaced apart along the axial direction, and two second engagement members 36 and a reset member 37 may be disposed in each through hole 501.

[0145] In other embodiments, the rotating shaft 500 is the active member 331, the abutting member 400 is the passive member 332, the rotating shaft 500 is configured to rotate synchronously with the rotating member 200, and the rotating shaft 500 is penetrated by the abutting member 400, and the abutting member 400 rotates relative to the rotating member 200. The first gearing member 35 is arranged on the outer periphery of the rotating shaft 500 and the abutting member 400, and the second gearing member 36 is arranged on the inner periphery of the abutting member 400, and the first gearing member 35 and the second gearing member 36 are arranged relative to each other (such as Fig.31 The reset member 37 is a spring disposed in the rotating shaft 500 , and the spring abuts against an end of the first engagement member 35 away from the second engagement member 36 .

[0146] The first engagement member 35 may be a long strip disposed on the outer periphery of the rotating shaft 500, and its structure is similar to that of the first engagement member 35. Fig.29The second engagement members 36 shown are substantially the same, and the number may be one or more. The second engagement member 36 may be integrally formed with the abutting member 400 and formed on the inner periphery of the abutting member 400 .

[0147] A receiving groove 502 may be provided on the outer circumference of the rotating shaft 500, and the opening of the receiving groove 502 passes through the outer circumference of the rotating shaft 500 and faces the second engaging member 36. The first engaging member 35 is disposed at the opening of the receiving groove 502 and abuts against the second engaging member 36. The reset member 37 is disposed in the receiving groove 502, and one end of the reset member 37 abuts against the bottom wall of the receiving groove 502 and the other end abuts against the end of the first engaging member 35 away from the second engaging member 36. Similarly, one or more receiving grooves 502 may be provided on the outer circumference of the rotating shaft 500, and a first engaging member 35 and a reset member 37 may be disposed in each receiving groove 502.

[0148] It can be understood that the meshing suspension design in the above two embodiments can be universal, that is, in the embodiment in which the rotating shaft 500 and the rotating member 200 rotate relative to each other and cooperate with the linkage member 300 to form an meshing suspension structure, the second meshing member 36 and the reset member 37 can be arranged in the accommodating groove 502 of the rotating shaft 500; in the embodiment in which the rotating shaft 500 and the rotating member 200 rotate synchronously and cooperate with the supporting member 400 to form an meshing suspension structure, the first meshing member 35 and the reset member 37 can be arranged in the through hole 501 of the rotating shaft 500.

[0149] Through the above design, the torsion assembly 30 can be provided with a first engaging member 35, a second engaging member 36 and a reset member 37 by means of the rotating shaft 500 and another component rotating relative thereto, thereby avoiding the need to provide structures such as springs required for achieving engaged suspension along the axial direction of the rotating shaft 500, thereby reducing the space occupied by the torsion assembly 30 in the axial direction of the rotating shaft 500.

[0150] It should be noted that, in theory, all regions of the torsion assembly 30 that have relative rotational fit can adopt the above-mentioned mutually meshing features to achieve a multi-level hovering effect, and is not limited to the above-mentioned embodiments.

[0151] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, and the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0152] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present application are usually placed when in use. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0153] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0154] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made according to the description and drawings of the present application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A torsion assembly, characterized in that: The invention comprises an active member, a passive member, a first meshing member, a second meshing member and a reset member, wherein the active member can rotate relative to the passive member, the first meshing member is configured to rotate synchronously with the active member, the second meshing member is arranged on the passive member, and the reset member is used to provide a force for the second meshing member to resist the first meshing member; Among them, the matching position of the first engaging member and the second engaging member includes multiple engaging positions and an active position during the transition from one engaging position to the next engaging position; when the first engaging member and the second engaging member are in the engaging position, the torsion assembly is in a suspended state; when the first engaging member and the second engaging member are in the active position, the torsion assembly is in an active state; the first engaging member can change the engaging state with the second engaging member under the drive of the active member, and the first engaging member and the second engaging member can switch from one engaging position to the next engaging position via the active position, thereby realizing the graded suspension of the torsion assembly.

2. The torsion assembly according to claim 1, characterized in that: A plurality of first protruding teeth are provided on the surface of the first gearing member facing the second gearing member, and a plurality of second protruding teeth are provided on the surface of the second gearing member facing the first gearing member, wherein the plurality of first protruding teeth and the plurality of second protruding teeth are arranged around along a rotation direction, and the rotation direction is a direction in which the first gearing member rotates relative to the second gearing member under the drive of the active member; The top of the first protruding tooth is a first peak, the portion between the top of the first protruding tooth and the bottom of the first protruding tooth is a first peak waist, and the bottoms of two adjacent first protruding teeth are connected to form a first peak valley; the top of the second protruding tooth is a second peak, the portion between the top of the second protruding tooth and the bottom of the second protruding tooth is a second peak waist, and the bottoms of two adjacent second protruding teeth are connected to form a second peak valley; Among them, when the first peak and the second peak valley are against each other, the first meshing member and the second meshing member are in the meshing position; when the first peak and the second peak waist are against each other, and when the first peak and the second peak are against each other, the first meshing member and the second meshing member are both in the active position; driven by the active member, the first meshing member can switch from a state where the first peak and a second peak valley are against each other, to a state where the first peak and a second peak waist are against each other, to a state where the first peak and the next second peak waist are against each other, thereby realizing the graded suspension of the torsion component.

3. The torsion assembly according to claim 2, characterized in that: The climbing angle of the first protruding tooth and the climbing angle of the second protruding tooth are both within the range of 90 degrees to 150 degrees.

4. The torsion assembly according to claim 2, characterized in that: The ratio of the width of the first peak to the height of the first protruding tooth is between 1 / 10 and 2 / 3; the ratio of the width of the second peak to the height of the protruding tooth is between 1 / 10 and 2 / 3.

5. The torsion assembly according to claim 1, characterized in that: The torque assembly includes a base, a rotating member rotatably connected to the base, and a rotating shaft rotatably matched with the rotating member; the rotating member is the active member, which is used to drive the first meshing member to rotate relative to the second meshing member.

6. The torsion assembly according to claim 5, characterized in that: The torsion assembly includes a supporting member located at one side of the rotating member, the rotating shaft is rotatably matched with the supporting member, the supporting member is the passive member, and the second engaging member is arranged on a side of the supporting member facing the first engaging member.

7. The torsion assembly according to claim 6, characterized in that: The torque assembly includes two synchronous members that can rotate synchronously in opposite directions, and two linkage members that rotate one by one with the synchronous members; one of the rotating members is provided on both sides of the base, and each of the rotating members is transmission-connected with one of the linkage members, so that the linkage member can rotate synchronously with the rotating member, thereby making the two rotating members located on both sides of the base rotate synchronously in opposite directions; the first meshing member is arranged on the surface of the linkage member opposite to the abutting member, and is arranged opposite to the second meshing member, and one of the linkage member and the rotating member is the active member; the reset member is a spring, and the spring abuts against the end of the abutting member away from the first meshing member.

8. The torsion assembly according to claim 7, characterized in that: The rotating shaft passes through the linkage member and the abutment member; the rotating shaft is configured to rotate relative to the abutment member and form a convex point friction fit with the abutment member, wherein at least one of the outer periphery of the rotating shaft and the inner periphery of the abutment member is provided with a convex portion for realizing the convex point friction fit; or The rotating shaft is configured to rotate relative to the linkage member and form a convex point friction fit with the linkage member, wherein at least one of the outer periphery of the rotating shaft and the inner periphery of the linkage member is provided with a convex portion for achieving the convex point friction fit.

9. The torsion assembly according to claim 8, characterized in that: The torsion assembly comprises a first support member and a second support member which are arranged opposite to and connected to each other, and the rotating member and the linkage member are both arranged between the first support member and the second support member, and are connected to the first support member and the second support member respectively; Among them, the first support member and the second support member cooperate to form a rotating pair, the first support member and the linkage member cooperate to form a cam pair, the second support member and the linkage member cooperate to form a moving pair, the second support member and the rotating member cooperate to form a rotating pair, the linkage member and the base cooperate to form a rotating pair, and the rotating member and the base cooperate to form a rotating pair, so that the torsion assembly can be in a teardrop shape in the folded state.

10. The torsion assembly according to claim 6, characterized in that: The rotating shaft is configured to rotate synchronously with the rotating member, and the rotating shaft passes through the abutting member; the first engaging member is arranged on the outer periphery of the rotating shaft opposite to the abutting member, and is arranged opposite to the second engaging member; the reset member is a spring arranged in the rotating shaft, and the spring abuts against one end of the first engaging member facing away from the second engaging member.

11. The torsion assembly according to claim 5, characterized in that: The rotating shaft is the passive part, the second engaging part is arranged on the outer circumference of the rotating shaft and is arranged opposite to the first engaging part; the reset part is a spring arranged in the rotating shaft, and the spring abuts against one end of the second engaging part away from the first engaging part.

12. The torsion assembly according to claim 10 or 11, characterized in that: An accommodating groove is provided on the outer circumference of the rotating shaft. The spring is arranged in the accommodating groove, and one end of the spring abuts against the bottom wall of the accommodating groove.

13. The torsion assembly according to claim 10 or 11, characterized in that: The rotating shaft is provided with a through hole, and the spring is arranged in the through hole.

14. The torsion assembly according to claim 5, characterized in that: A convex portion is provided on at least one of the two surfaces of the rotating member and the base that are opposite to each other, so that the rotating matching surfaces of the rotating member and the base form a convex point friction fit.

15. A folding device, characterized in that: It comprises two shells and a torsion assembly as described in any one of claims 1 to 14, wherein the two shells are respectively connected to the torsion assembly, and the torsion assembly is used to realize the function that the two shells can be folded relative to each other.

16. An electronic device, characterized in that: It comprises a flexible screen and a folding device as claimed in claim 15, wherein the flexible screen is arranged on the folding device.

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