Shaft module, housing assembly and electronic devices

Abstract

This application discloses a hinge module, a housing assembly, and an electronic device, belonging to the field of smart device technology. In the hinge module, the first connecting seat and the second connecting seat are subjected to force and rotate around the first rotating axis, thereby causing the connecting seat and the rotating arm to rotate together. With the lengths of the first and second connecting arms being fixed, the rotation radius is limited, thereby allowing the connecting seat and the rotating arm to slide relative to each other. When the first support plate is installed on the first connecting seat and the first rotating arm, and the second support plate is installed on the second connecting seat and the second rotating arm, the rotating arm can slide relative to the connecting seat to make way for the display screen, so that the folded part formed by the flexible display screen is accommodated in the electronic device, minimizing the thickness of the electronic device and making it thinner. In addition, by extending and retracting the first and second rotating arms to make way, the volume of the hinge module can be further reduced.

Description

Technical Field

[0001] This application belongs to the field of intelligent device technology, specifically relating to a pivot module, housing assembly, and electronic device. Background Technology

[0002] Currently, in foldable screen technology, the inner side of the folding section experiences a slight shortening of the distance, while the outer side experiences a slight lengthening. Therefore, to avoid damaging the foldable screen, a 180-degree bend is not possible at the folding section; instead, a certain radius (R-angle) must be maintained. Foldable devices manufactured using this method in existing technology exhibit a relatively thick appearance. Summary of the Invention

[0003] This application provides a pivot module, a housing assembly, and an electronic device.

[0004] To solve the above-mentioned technical problems, one technical solution adopted in this application is: a rotating shaft module.

[0005] Base;

[0006] The first and second rotating arms are respectively rotatably connected to the base on two different and parallel first rotating axes;

[0007] The first and second connecting arms are rotatably connected to the base on two different and parallel second rotating axes, wherein the first rotating axis and the second rotating axis are arranged parallel to each other; and

[0008] First and second connecting seats, the first connecting seat is rotatably connected to the end of the first connecting arm away from the base, the first connecting seat is slidably connected to the first rotating arm and slides relative to it in a direction perpendicular to the first rotation axis, the second connecting seat is rotatably connected to the end of the second connecting arm away from the base, the second connecting seat is slidably connected to the second rotating arm and slides relative to it in a direction perpendicular to the first rotation axis, the first rotating arm is configured to be relatively stationary with respect to the first connecting seat and rotate around the base together, and slides only with the first connecting seat within the limit of the distance between the first connecting seat and the second rotation axis of the first connecting arm, while extending and retracting in the sliding direction to adjust the length of the first rotating arm, the second rotating arm is configured to be relatively stationary with respect to the second connecting seat and rotate around the base together, and slides only with the second connecting seat within the limit of the distance between the second connecting seat and the second rotation axis of the second connecting arm, while extending and retracting in the sliding direction to adjust the length of the second rotating arm.

[0009] To solve the above-mentioned technical problems, one technical solution adopted in this application is: a housing assembly, comprising:

[0010] Base;

[0011] The first and second rotating arms are respectively rotatably connected to the base on two different and parallel first rotating axes;

[0012] The first and second connecting arms are rotatably connected to the base on two different and parallel second rotating axes, wherein the first rotating axis and the second rotating axis are arranged parallel to each other; and

[0013] First and second housings, the first housing is rotatably connected to the end of the first connecting arm away from the base, the first housing is slidably connected to the first rotating arm and slides relative to it in a direction perpendicular to the first rotation axis, the second housing is rotatably connected to the end of the second connecting arm away from the base, the second housing is slidably connected to the second rotating arm and slides relative to it in a direction perpendicular to the first rotation axis, the first rotating arm is configured to be relatively stationary with respect to the first housing and rotate around the base together, and slides only with the first housing within the limit of the distance between the first housing and the second rotation axis of the first connecting arm, while extending and retracting in the sliding direction to adjust the length of the first rotating arm, the second rotating arm is configured to be relatively stationary with respect to the second housing and rotate around the base together, and slides only with the second housing within the limit of the distance between the second housing and the second rotation axis of the second connecting arm, while extending and retracting in the sliding direction to adjust the length of the second rotating arm.

[0014] To solve the above-mentioned technical problems, one technical solution adopted in this application is: an electronic device, comprising:

[0015] Shaft support frame;

[0016] The support plate forms a receiving cavity with the rotating shaft support frame;

[0017] At least one pivot module is disposed in the extending direction of the pivot support frame, and each of the at least one pivot module includes:

[0018] The first and second fixed bases are arranged side by side in the extending direction of the rotating shaft support frame and are located in the accommodating cavity;

[0019] The first and second rotating arms are respectively rotatably connected to the first fixed base on two different and parallel first rotating axes;

[0020] The first and second connecting arms are rotatably connected to the first fixed base on two different and parallel second rotation axes, respectively;

[0021] The first and second synchronous arms are rotatably connected to the second fixed base on two different and parallel third rotation axes. The first and second synchronous arms are configured to have the same angular velocity when rotating around the second fixed base. One of the first and second synchronous arms rotates in a first direction and the other synchronous arm rotates in a second direction. The first direction and the second direction are configured to be opposite. The first rotation axis is parallel to the second rotation axis, and the second rotation axis is parallel to the third rotation axis.

[0022] First and second connecting seats: the first connecting seat is rotatably connected to the end of the first connecting arm away from the first fixed base, and the first connecting seat is slidably connected to the first rotating arm, sliding relative to it in a direction perpendicular to the first rotation axis. The second connecting seat is rotatably connected to the end of the second connecting arm away from the first fixed base, and the second connecting seat is slidably connected to the second rotating arm, sliding relative to it in a direction perpendicular to the first rotation axis. The first rotating arm is configured to be stationary relative to the first connecting seat and rotate around the first fixed base, and slides only with the first connecting seat within the distance between the first connecting seat and the second rotation axis of the first connecting arm, while sliding in the same direction... The first rotating arm is telescopically extended to adjust its length. The second rotating arm is configured to be stationary relative to the second connecting seat and rotate around the first fixed base. It slides only with the second connecting seat, limited by the distance between the second connecting seat and the second rotation axis of the second connecting arm. Simultaneously, it telescopically extends in the sliding direction to adjust the length of the second rotating arm. The first connecting seat is rotatably connected to the end of the first synchronous arm away from the second fixed base and slides relative to the first synchronous arm in a direction perpendicular to the third rotation axis. The second connecting seat is rotatably connected to the end of the second synchronous arm away from the second fixed base and slides relative to the second synchronous arm in a direction perpendicular to the third rotation axis.

[0023] The first and second trays are arranged opposite to each other, and are located on the same side of the first and second rotating arms, the first and second connecting arms, and the first and second synchronous arms. The first tray is rotatably connected to the first connecting seat and the first rotating arm. The first tray is configured to slide relative to the first rotating arm when the first connecting seat slides relative to the first rotating arm, and simultaneously rotate relative to the first connecting seat. The second tray is rotatably connected to the second connecting seat and the second rotating arm. The second tray is configured to slide relative to the second rotating arm when the second connecting seat slides relative to the second rotating arm, and simultaneously rotate relative to the second connecting seat. The support plate is configured to be located between the first and second trays after the rotating shaft module is fully extended.

[0024] A first and a second housing are disposed opposite to each other, one end of the first housing is fixedly connected to the first connecting seat, and one end of the second housing is fixedly connected to the second connecting seat; and

[0025] A flexible display screen is disposed on the first and second housings, the first and second support plates, and the support plate. The first and second support plates are configured such that when the first and second housings are folded, the first support plate rotates around the first connecting seat, and the second support plate rotates around the second connecting seat, so as to make way for the part of the flexible display screen corresponding to the folded part of the first and second housings, thereby avoiding folding damage to the part of the flexible display screen corresponding to the folded part of the first and second housings.

[0026] The above solution provides a hinge module for assembling foldable electronic devices. When the electronic device is folded or unfolded, the first and second connecting seats rotate around the first rotation axis under force, causing the connecting seats and the rotating arm to rotate together. With a fixed length for the first and second connecting arms, the distances between the first and second connecting seats and the second rotation axis are limited, allowing the connecting seats and the rotating arm to slide relative to each other. When a first tray is installed on the first connecting seat and the first rotating arm, and a second tray is installed on the second connecting seat and the second rotating arm, the first tray can slide relative to the first connecting seat on the first rotating arm to make way for the display screen, and simultaneously the second tray can slide synchronously relative to the second connecting seat on the second rotating arm to make way for the display screen. This allows the folded portion formed by the flexible display screen to be housed within the electronic device, minimizing the thickness of the electronic device. Furthermore, the expansion and contraction of the first and second rotating arms can further reduce the volume of the hinge module. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the electronic device in one embodiment of this application is disclosed;

[0029] Figure 2 This application discloses Figure 1 The schematic diagrams of the first and second housings in the illustrated embodiment are shown.

[0030] Figure 3 This application discloses Figure 1 The diagram shows the structural schematic of the folding mechanism in the embodiment shown.

[0031] Figure 4 This application discloses Figure 3 Exploded view of the folding mechanism in the embodiment shown;

[0032] Figure 5 This application discloses Figure 4 The schematic diagram of the shaft support frame in the embodiment shown is as follows;

[0033] Figure 6 This application discloses Figure 1 A schematic diagram of the rotating shaft support frame, the first housing, and the second housing when fully extended in the embodiment shown.

[0034] Figure 7 This application discloses Figure 6 The schematic diagram of the pivot support frame, the first housing, and the second housing in the embodiment shown is when they are fully folded.

[0035] Figure 8 This application discloses Figure 4 The schematic diagram of the rotating shaft module in the embodiment shown is as follows;

[0036] Figure 9 This application discloses Figure 8 Exploded view of the rotating shaft module in the embodiment shown;

[0037] Figure 10 This application discloses Figure 9 Exploded view of the synchronization component in the illustrated embodiment;

[0038] Figure 11 This application discloses Figure 10 A schematic diagram of the structure of the second mounting base in the embodiment shown;

[0039] Figure 12 This application discloses Figure 10 A perspective view of the synchronous arm portion structure in the illustrated embodiment;

[0040] Figure 13 This application discloses Figure 10 Another perspective view of the synchronization arm portion structure in the illustrated embodiment;

[0041] Figure 14 This application discloses Figure 10 An exploded view of the synchronous transmission component in the illustrated embodiment;

[0042] Figure 15 This application discloses Figure 10 Exploded view of the synchronous transmission component in the illustrated embodiment from another perspective;

[0043] Figure 16 This application discloses Figure 10 The schematic diagram of the limiting component in the embodiment shown is as follows;

[0044] Figure 17 This application discloses Figure 10 The schematic diagram of the synchronization component in the embodiment shown is as follows;

[0045] Figure 18 This application discloses Figure 10 The diagram shown illustrates the connection between the synchronization component and the rotating shaft support frame in the embodiment shown.

[0046] Figure 19 This application discloses Figure 10 Exploded view of the regulating component in the illustrated embodiment;

[0047] Figure 20 This application discloses Figure 9 Exploded view of the second fixed base and the second sub-support base in the embodiment shown;

[0048] Figure 21 This application discloses Figure 19 Exploded view of the rotating arm in the embodiment shown;

[0049] Figure 22 This application discloses Figure 9 The illustrated embodiment shows a schematic diagram of the structure of the first connecting seat and the second connecting seat.

[0050] Figure 23 This application discloses Figure 8 Exploded view of the connection between the connecting seat and the connecting arm, rotating arm and synchronizing arm in the embodiment shown;

[0051] Figure 24 This application discloses Figure 4The schematic diagram of the structure of the first tray and the second tray in the embodiment shown;

[0052] Figure 25 This application discloses Figure 4 The diagram shown illustrates the structural connection between the tray, connecting seat, and rotating arm in the embodiment illustrated.

[0053] Figure 26 This application discloses Figure 4 A schematic diagram of the support plate in the embodiment shown;

[0054] Figure 27 This application discloses Figure 4 The diagram shows the structural schematic of the folding mechanism in the embodiment shown.

[0055] Figure 28 This application discloses Figure 1 A schematic diagram of the structure of the folding mechanism and display module after they are fully unfolded in the embodiment shown;

[0056] Figure 29 This application discloses Figure 1 The diagram shown is a schematic of the structure of the folding mechanism and the display module after they are fully folded in the embodiment shown.

[0057] Figure 30 This application discloses Figure 1 A simplified structural diagram of the rotating shaft module in the illustrated embodiment;

[0058] Figure 31 This is a schematic diagram of the structural composition of an embodiment of the electronic device in this application. Detailed Implementation

[0059] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0060] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0061] The term "electronic device" as used herein (also referred to as a "terminal," "mobile terminal," or "electronic device") includes, but is not limited to, devices configured to receive / transmit communication signals via a wired connection (such as via a Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital Cable, Direct Cable Connection, and / or another data connection / network) and / or via a wireless interface (e.g., for cellular networks, Wireless Local Area Networks (WLANs), Digital Television Networks such as DVB-H networks, Satellite Networks, AM-FM Broadcast Transmitters, 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 phones; personal communication system (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communication 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 handheld receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device equipped with a cellular communication module.

[0062] Please see Figure 1 This document discloses a schematic diagram of the structure of the electronic device when deployed in one embodiment of this application. The electronic device 100 can be any one of a plurality of electronic devices. The plurality of electronic devices includes, but is not limited to, cellular phones, smartphones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, calculators, programmable remote controls, pagers, netbooks, personal digital assistants (PDAs), portable multimedia players (PMPs), Moving Image Experts Group (MPEG-1 or MPEG-2), Audio Layer 3 (MP3) players, portable medical devices, and digital cameras and combinations thereof.

[0063] Please see Figure 1 The electronic device 100 may include a display module 200, a first housing 400 for supporting the display module 200, a second housing 600 for supporting the display module 200, and a folding mechanism 800 connecting the first housing 400 and the second housing 600 and supporting the display module 200. The first housing 400, the second housing 600, and the folding mechanism 800 may form a housing assembly 300. The housing assembly 300 can be folded in half by the folding action of the folding mechanism 800. After the housing assembly 300 is unfolded, the display module 200 is located on one side of the housing assembly 300 and the folding mechanism 800, and is used to display information.

[0064] The electronic device 100 can fold its first housing 400 and second housing 600 together via the folding action of the folding mechanism 800, thereby causing the display module 200 to fold along with the first housing 400 and second housing 600, thus achieving the folding of the electronic device 100. Alternatively, the electronic device 100 can unfold its first housing 400 and second housing 600 via the unfolding action of the folding mechanism 800, thereby causing the display module 200 to flatten out, facilitating further use of the display module 200 by the user. It is understood that the housing assembly 300 may include not only two housings (e.g., the first housing 400 and the second housing 600) and the folding mechanism 800, but also multiple housings and multiple folding mechanisms 800. Two connected housings can be connected via the folding mechanism 800.

[0065] It should be noted that the terms "first," "second," etc., used herein and hereinafter are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of the stated features.

[0066] It is understood that the terms "first housing", "second housing" and "housing" can be used interchangeably in some embodiments. For example, in one embodiment, the "first housing" in other embodiments is referred to as the "second housing", and correspondingly, the "second housing" in other embodiments is referred to as the "first housing".

[0067] Please see Figure 1 The display module 200 is used to display information and can be electrically connected to electronic components such as circuit boards, batteries, and cameras within the electronic device 100. Specifically, the display module 200 can be a flexible display screen, which is made of a soft material and is a deformable and bendable display device. When the housing assembly 300 is unfolded, the display module 200 can be mounted on the same side of the housing assembly 300, such as the first housing 400, the second housing 600, or the folding mechanism 800, for displaying information. The display module 200 can be an integral structure. Of course, the display module 200 can also be a combination of two flexible displays, with the two flexible displays respectively mounted on the first housing 400 and the second housing 600. Understandably, when the display module 200 is a combination of two flexible displays, the positions of the two flexible displays mounted on the housing assembly 300 are not limited. For example, one flexible display screen is mounted on the first housing 400, and the other flexible display screen is mounted on the second housing 600. For example, both flexible displays are mounted on either the first housing 400 or the second housing 600.

[0068] The housing, such as the first housing 400 and the second housing 600, can be used to support and install the display module 200, or to support and install electronic components such as circuit boards, batteries, and cameras. Of course, there may be more than just the first housing 400 and the second housing 600. At least two adjacent housings can be fixedly connected by a folding mechanism 800, allowing the electronic device 100 to be folded by the two adjacent housings fixedly connected by the folding mechanism 800, thus folding the electronic device 100. Conversely, the electronic device 100 can be unfolded by the two adjacent housings fixedly connected by the folding mechanism 800, thus unfolding the electronic device 100.

[0069] Please see Figure 1 When the electronic device 100 is unfolded, an integrally formed display module 200 is disposed on the same side of the first housing 400 and the second housing 600. The first housing 400 and the second housing 600 are arranged according to... Figure 1 When the folding action is performed as indicated by the middle arrow, the display module 200 can be folded to realize the folding of the electronic device 100, which facilitates the storage of the electronic device 100. In addition, the first housing 400 and the second housing 600 can be unfolded to fully unfold, which further facilitates the use of the electronic device 100.

[0070] Of course, the first housing 400 and the second housing 600 may each be provided with a display module 200, or the display module 200 may be provided only on the first housing 400 or the second housing 600. In one embodiment, multiple housings may be provided with display modules 200 on at least the first housing 400 and / or the second housing 600.

[0071] In some embodiments, when the housing assembly 300 is folded to full fold, the display module 200 may be located between the first housing 400 and the second housing 600. That is, the housing assembly 300 is folded toward the side facing the display module 200 (i.e., see [reference]). Figure 1 (In the direction of the middle arrow). The housing assembly 300 can protect the display module 200 and prevent it from being scratched in certain scenarios.

[0072] In some embodiments, when the housing assembly 300 is folded to its full fold, the display module 200 can cover the outer surfaces of the first housing 400 and the second housing 600. That is, the housing assembly 300 is folded on the side opposite to the display module 200. This allows for partial display of the display module 200 after the housing assembly 300 is folded, facilitating portability and storage, and also enabling switching between large and small screens as needed.

[0073] In one embodiment, when there are three housings, the three housings can be stacked when the housing assembly 300 is fully folded after the folding action. The display module 200 is integrally formed, and part of it is located between two adjacent housings and part of it is located on the outer surface of the remaining housing, which facilitates storage and partial display of the display module 200.

[0074] Please see Figure 1 and Figure 2 , Figure 2 This application discloses Figure 1 The illustrated embodiment shows a schematic diagram of the structure of the first housing 400 and the second housing 600. There may be two housings, such as the first housing 400 and the second housing 600. The housings may be formed of plastic, glass, ceramic, fiber composite materials, metals (e.g., stainless steel, aluminum, etc.) or other suitable materials or combinations thereof. Each housing may include a housing body 401 for supporting and mounting the display module 200. The housing body 401 may have an internal space for supporting and mounting electronic components such as circuit boards and batteries. The housing body 401 is used to connect with the folding mechanism 800; for example, the housing body 401 of the first housing 400 is connected to one end of the folding mechanism 800, and the housing body 401 of the second housing 600 is connected to the other end of the folding mechanism 800, thereby achieving the connection between the housings, such as the first housing 400 and the second housing 600, and the folding mechanism 800.

[0075] A connecting plate 402 is provided on the side of the housing body 401 near the folding mechanism 800 for connection with the folding mechanism 800. In one embodiment, the connecting plate 402 can be fixedly connected to the folding mechanism 800 by means of plug-in or screw connection, or it can be fixedly connected to the folding mechanism 800 by other means such as glue or welding. The specific connection method is not limited.

[0076] The connecting plate 402 forms an accommodating space 101 with the display module 200 to make way for the folding mechanism 800 or other components such as circuit traces and sensors. Furthermore, after the electronic device 100 is folded, the accommodating space 101 makes way for the display module 200 to form a "teardrop" folded shape, thus allowing the folding mechanism 800 to support the display module 200. When the electronic device 100 is unfolded, the surface of the folding mechanism 800 near the display module 200 and the surface of the housing near the display module 200 can be on the same plane, making the display module 200 flat when formed on the housing assembly 300.

[0077] The connecting plate 402 can serve as the folding portion of the first housing 400 and the second housing 600. When the first housing 400 and the second housing 600 are folded, the part of the display module 200 corresponding to the folding portion can be placed in the accommodating space 101 to form a "teardrop" folded shape. This avoids damage to the part of the display module 200 corresponding to the folding portion during folding.

[0078] A recessed relief groove 403 may be provided on the side of the connecting plate 402 near the folding mechanism 800 to cooperate with the folding mechanism 800. The relief groove 403 is located on the side of the connecting plate 402 facing the display module 200. In one embodiment, when the thickness of the connecting plate 402 is reduced, the relief groove 403 can be omitted, thereby reducing the overall thickness of the electronic device 100.

[0079] The connecting plate 402 has a raised edge 404 on the edge of the clearance groove 403 near the folding mechanism 800. In one embodiment, the raised edge 404 extends towards the display module 200 to support the folding mechanism 800 when the electronic device 100 is unfolded, thus preventing the electronic device 100 from unfolding at an excessively large angle and causing damage, such as overstretching damage to the display module 200. It also allows the folding mechanism 800 to fold when the electronic device 100 is folded, enabling the folding mechanism 800 to engage with the clearance groove 403 and be held in place. In one embodiment, the raised edge 404 may be omitted.

[0080] It is understood that the housing in the above embodiments is merely one implementation method in specific embodiments, and the housing may also be a structure composed of a middle frame and a bottom plate, etc. The housing may also be made using techniques well known in the art.

[0081] Please see Figure 3 and Figure 4 , Figure 3 This application discloses Figure 1 The schematic diagram of the folding mechanism 800 in the embodiment shown is as follows. Figure 4 This application discloses Figure 3 The exploded view of the folding mechanism 800 in the illustrated embodiment is shown. The folding mechanism 800 may include a pivot support frame 10, a pivot module 20 mounted on the pivot support frame 10 and connected and fixed to the first housing 400 and the second housing 600 respectively, a first tray 30 and a second tray 40 mounted on the pivot module 20 and used to support the display module 200, and a support plate 50 disposed between the first tray 30 and the second tray 40 and on the side of the pivot module 20 facing the display module 200. When the electronic device 100 is fully unfolded, the support plate 50 is located between the first tray 30 and the second tray 40, and the first tray 30, support plate 50, and second tray 40 are sequentially arranged and can collectively support the display module 200.

[0082] Please see Figure 5 It discloses the contents of this application. Figure 4 The schematic diagram of the pivot support frame 10 in the illustrated embodiment is shown. The pivot support frame 10 may include a support frame body 11 for mounting the pivot module 20, a support frame sidewall 12 disposed at the edge of the support frame body 11 and used to limit the pivot module 20, and a reinforcing plate 13 connecting the support frame body 11 and the support frame sidewall 12. In one embodiment, the pivot support frame 10 may be omitted.

[0083] Specifically, the support frame body 11 can be made of rigid material and can be plate-shaped. The support frame body 11 can also be strip-shaped. A pivot mounting part 14 is provided on the side of the support frame body 11 facing the pivot module 20 so that the pivot module 20 can be mounted on the pivot mounting part 14.

[0084] In one embodiment, the shaft mounting portion 14 may be a through hole with internal threads or a cylindrical structure or through hole with external threads. Of course, the shaft mounting portion 14 may also be a plug-in structure. Furthermore, the shaft mounting portion 14 may also have other structures, and no further limitations are placed on it here. In one embodiment, the shaft mounting portion 14 may also be omitted.

[0085] In one embodiment, at least one pivot mounting portion 14 may be arranged in the extending direction of the support frame body 11. In another embodiment, there may be three pivot mounting portions 14, respectively arranged at both ends and the middle of the extending direction of the support frame body 11, so that three pivot modules 20 can be mounted.

[0086] The support frame sidewall 12 may be made of a rigid material. The support frame sidewall 12 may extend from the edge of the support frame body 11 toward one side of the pivot module 20. In one embodiment, the support frame sidewall 12 may be integral with the support frame body 11.

[0087] When the electronic device 100 is unfolded to full unfolding, the side wall 12 of the support frame can abut against the rotating module 20 to limit the unfolding process of the rotating module 20, such as to prevent the electronic device 100 from unfolding at too large an angle and causing damage to the display module 200, such as overstretching damage to the display module 200.

[0088] The support frame sidewall 12 has a clearance portion 121 on the edge facing the first tray 30 and the second tray 40, so as to make way for the rotating shaft module 20, the first tray 30 and the second tray 40 when the electronic device 100 is unfolded or folded.

[0089] In addition, the clearance portion 121 can also make way for the circuit wiring inside the electronic device 100 so that the circuit wiring extends from the first housing 400, passes through the shaft support frame 10 via the clearance portion 121, and extends to the second housing 600, thereby realizing the electrical connection between the electronic components provided on the first housing 400 and the electronic components provided on the second housing 600.

[0090] In one embodiment, the support frame sidewall 12 may be omitted.

[0091] In one embodiment, a limiting part that replaces the support frame sidewall 12 may be provided on the support frame body 11 to omit the support frame sidewall 12.

[0092] The reinforcing plate 13 can be made of a rigid material. The reinforcing plate 13 can be a plate-like structure. The reinforcing plate 13 is connected and fixed to the main body 11 of the support frame and the side wall 12 of the support frame to improve the strength of the rotating shaft support frame 10.

[0093] The reinforcing plate 13 can divide the accommodating cavity 10a formed by the support frame body 11 and the support frame sidewall 12 into multiple sub-accommodating cavities. In one embodiment, there can be multiple reinforcing plates 13, arranged in the extending direction of the support frame body 11. In another embodiment, there can be four reinforcing plates 13, dividing the accommodating cavity 10a into five sub-accommodating cavities. The five sub-accommodating cavities, in the extending direction of the support frame body 11, are sequentially: mounting cavity 15, wiring cavity 16, mounting cavity 15, wiring cavity 16, and mounting cavity 15. The mounting cavity 15 is used to accommodate part of the structure of the rotating shaft module 20, and the rotating shaft module 20 is connected and fixed to the rotating shaft mounting part 14 disposed within the mounting cavity 15. The wiring cavity 16 is used to accommodate circuit wiring entering from the clearance part 121. In one embodiment, the reinforcing plate 13 can be omitted.

[0094] Please see Figure 6 and Figure 7 , Figure 6 This application discloses Figure 1 The schematic diagram shown is a structural representation of the pivot support frame 10, the first housing 400, and the second housing 600 when fully extended in the embodiment illustrated. Figure 7 This application discloses Figure 6The illustrated embodiment shows a schematic diagram of the hinge support frame 10 and the first housing 400 and second housing 600 when fully folded. After the electronic device 100 unfolds until it is fully unfolded, the hinge support frame 10 can be located within the clearance grooves 403 of the first housing 400 and the second housing 600, and is supported by the protruding edge 404. In one embodiment, the protruding edge 404 extends towards the display module 200, allowing the hinge support frame 10 to shift towards the display module 200, thereby positioning it outside the clearance grooves 403 of the first housing 400 and the second housing 600. Furthermore, the end of the first housing 400 near the second housing 600 and the end of the second housing 600 near the first housing 400 can abut against each other to limit the unfolding angle of the electronic device 100, preventing excessive unfolding angles that could damage the display module 200, such as overstretching damage.

[0095] When the electronic device 100 is folded, the clearance groove 403 can prevent spatial interference between the connecting plate 402 and the pivot support frame 10.

[0096] When the electronic device 100 is folded, from the moment it is fully folded, the first housing 400 and the second housing 600 are stacked. The pivot support frame 10 is located at the end of the first housing 400 and the second housing 600 on the same side. The pivot support frame 10 is partially located in the relief groove 403. The protruding edge 404 of the first housing 400 and the protruding edge 404 of the second housing 600 can overlap and hold with the pivot support frame 10 respectively, so as to enhance the connection between the housing and the pivot support frame 10, avoid the gap between the housing and the pivot support frame 10 being too large, and avoid exposing other structures of the folding mechanism 800, thereby improving the appearance of the electronic device 100.

[0097] In one embodiment, when the electronic device 100 is fully folded after the folding action, the support frame sidewall 12 of the pivot support frame 10 overlaps with the protruding edge 404 of the first housing 400 and the protruding edge 404 of the second housing 600. The pivot support frame 10 is located between the two connecting plates 402.

[0098] Please refer to it again. Figure 4The pivot module 20 can be fixed to the pivot support frame 10, such as the support frame body 11, by means of screw connection, plug-in connection, welding process, etc. The number of pivot modules 20 can be at least one, and the specific number can be set as needed and is not specifically limited. For example, there can be one or more pivot modules 20. For example, there can be three pivot modules 20, namely a first pivot module 20a, a second pivot module 20b, and a third pivot module 20c. The first pivot module 20a, the second pivot module 20b, and the third pivot module 20c are all arranged in the extending direction of the pivot support frame 10, such as the support frame body 11. The first pivot module 20a and the third pivot module 20c are located at the two ends of the pivot support frame 10, such as the support frame body 11, respectively, and the second pivot module 20b is located in the middle of the pivot support frame 10, such as the support frame body 11. The specific embodiments listed herein do not constitute a specific limitation.

[0099] It is understood that the names "first pivot module", "second pivot module", "third pivot module" and "pivot module" can be interchanged in some embodiments. For example, in one embodiment, the "first pivot module" in other embodiments is referred to as the "second pivot module", and correspondingly, the "second pivot module" in other embodiments is referred to as the "first pivot module".

[0100] Please see Figure 8 and Figure 9 , Figure 8 This application discloses Figure 4 The schematic diagram of the rotating shaft module 20 in the embodiment shown is as follows. Figure 9 This application discloses Figure 8 The exploded view of the pivot module 20 in the illustrated embodiment is shown. The pivot module 20 may include a synchronization component 21 mounted on a pivot support frame 10, such as the support frame body 11; an adjustment component 22 mounted on the pivot support frame 10, such as the support frame body 11, and arranged side by side with the synchronization component 21 in the extending direction of the pivot support frame 10; a first connecting seat 23 mounted on a first housing 400, such as the connecting plate 402, and slidably connected to the synchronization component 21 and movably connected to the adjustment component 22; and a second connecting seat 24 mounted on a second housing 600, such as the connecting plate 402, and slidably connected to the synchronization component 21 and movably connected to the adjustment component 22.

[0101] It is understood that the terms "first connector", "second connector" and "connector" can be interchanged in some embodiments. For example, in one embodiment, the "first connector" in other embodiments is referred to as the "second connector", and correspondingly, the "second connector" in other embodiments is referred to as the "first connector".

[0102] Specifically, please refer to Figure 10 , Figure 10 This application discloses Figure 9 The exploded view of the synchronization component 21 in the illustrated embodiment is shown. The synchronization component 21 may include a first fixed base 25 fixed to a rotating shaft support frame 10, such as the support frame body 11; a first synchronization arm 26 rotatably connected to the first fixed base 25 and slidably connected to a first connecting seat 23; a second synchronization arm 27 rotatably connected to the first fixed base 25 and slidably connected to a second connecting seat 24; a synchronization transmission component 28 connected to the first synchronization arm 26 and the second synchronization arm 27 respectively; and a damping component 29 for limiting the movement of the first synchronization arm 26 and the second synchronization arm 27. The synchronization transmission component 28 is used to achieve synchronous rotation of the first synchronization arm 26 and the second synchronization arm 27, that is, the first synchronization arm 26 and the second synchronization arm 27 have the same angular velocity when rotating around the first fixed base 25.

[0103] Specifically, please refer to Figure 10 The first fixed base 25 may include a mounting base assembly 251 and a first mounting base 252 that are sequentially mounted on the rotating shaft support frame 10, such as the support frame body 11, in the extending direction of the rotating shaft support frame 10.

[0104] Mounting base assembly 251 may include a second mounting base 253 mounted on the pivot support frame 10, such as the support frame body 11, for mounting the first synchronous arm 26 and the second synchronous arm 27, and a snap-fit ​​member 254 cooperating with the second mounting base 253 to secure the first synchronous arm 26 and the second synchronous arm 27.

[0105] It is understood that the terms "first mounting base", "second mounting base" and "mounting base" can be interchanged in some embodiments. For example, in one embodiment, the "first mounting base" in other embodiments is referred to as the "second mounting base", and correspondingly, the "second mounting base" in other embodiments is referred to as the "first mounting base".

[0106] Please refer to the following: Figure 10 and Figure 11 , Figure 11 This application discloses Figure 10 The illustrated embodiment shows a schematic diagram of the structure of the second mounting base 253. The second mounting base 253 may be made of a rigid material. The second mounting base 253 is located within the mounting cavity 15 of the rotating shaft support frame 10. The second mounting base 253 may include a first base body 2531 mounted on the rotating shaft support frame 10, for example, the support frame body 11. The first base body 2531 is provided with a first mounting portion 2532 for engaging and fixing with the rotating shaft support frame 10, for example, the support frame body 11.

[0107] In one embodiment, the first assembly part 2532 may be a mounting hole, so as to be connected and fixed to the support frame body 11 on the rotating shaft support frame 10 by means of bolts, screws or other structures. It is understood that the first assembly part 2532 and the support frame body 11 may also adopt other connection methods, such as plug-in, welding, adhesive or other methods.

[0108] The first base body 2531 has connecting ears 2533 on opposite sides for mounting the first synchronous arm 26 and the second synchronous arm 27.

[0109] Specifically, both connecting ears 2533 are provided with a first pivot portion 2534. The first pivot portion 2534 may be a pivot hole. The axes of the two pivot holes are arranged in parallel so that the first synchronizing arm 26 is disposed in one pivot hole and rotatably connected to the second mounting base 253, and rotates about a first rotation axis (i.e., the axis of one first pivot portion 2534); so that the second synchronizing arm 27 is disposed in the other pivot hole and rotatably connected to the second mounting base 253, and rotates about a first rotation axis (i.e., the axis of one first pivot portion 2534).

[0110] The first base body 2531 has a first snap-fit ​​portion 2535 on the side away from the first mounting base 252 to facilitate snap-fit ​​engagement with the snap-fit ​​member 254. In one embodiment, the first snap-fit ​​portion 2535 may be a protrusion, which protrudes from the first base body 2531 toward the side away from the first mounting base 252.

[0111] In one embodiment, the first base body 2531 may serve as part of the pivot support frame 10. In another embodiment, the first base body 2531 and the pivot support frame 10 are an integral structure.

[0112] Please refer to it again. Figure 10 The snap-fit ​​element 254 may include a snap-fit ​​element body 2541 that snaps into the first base body 2531, for example, a first snap-fit ​​portion 2535. The snap-fit ​​element body 2541 is disposed on the side of the first base body 2531 away from the first mounting base 252. The snap-fit ​​element body 2541 is provided with a second snap-fit ​​portion 2542 to facilitate snap-fit ​​engagement with the first snap-fit ​​portion 2535. In one embodiment, the second snap-fit ​​portion 2542 may be a snap-fit ​​hole, so that the first snap-fit ​​portion 2535, for example, a protrusion, is placed in the snap-fit ​​hole, thereby achieving snap-fit ​​engagement between the snap-fit ​​element 254 and the first base body 2531. It is understood that the engagement form between the first snap-fit ​​portion 2535 and the second snap-fit ​​portion 2542 is not limited to the engagement form of a protrusion and a snap-fit ​​hole; it can also be other forms, such as grooves and protrusions, which will not be elaborated further.

[0113] The snap-fit ​​body 2541 is provided with a snap-fit ​​interface 2543 at a position opposite to the connecting ear 2533, such as the first pivot part 2534, so that when the first synchronous arm 26 and the second synchronous arm 27 rotate with the first base body 2531, they can be placed in the snap-fit ​​interface 2543, so that the snap-fit ​​body 2541 snaps into the first synchronous arm 26 and the second synchronous arm 27, preventing the first synchronous arm 26 and the second synchronous arm 27 from being disengaged from the installation state of the first base body 2531.

[0114] In one embodiment, when the first synchronizing arm 26 and the second synchronizing arm 27 are rotatably connected to the first base body 2531, the snap-fit ​​component 254 can be omitted.

[0115] Please see Figure 10 The first mounting base 252 may be made of a rigid material. The first mounting base 252 is located within the mounting cavity 15 of the rotating shaft support frame 10. The first mounting base 252 may include a first base body 2521 mounted on the rotating shaft support frame 10, for example, the support frame body 11. The first base body 2521 is provided with a first mounting portion 2522 for engaging and fixing with the rotating shaft support frame 10, for example, the support frame body 11.

[0116] In one embodiment, the first assembly part 2522 may be a mounting hole, so as to be connected and fixed to the support frame body 11 on the rotating shaft support frame 10 by means of bolts, screws or other structures. It is understood that the first assembly part 2522 and the support frame body 11 may also adopt other connection methods, such as plug-in, welding, adhesive or other methods.

[0117] The first assembly part 2522 is provided with connecting ears 2523 on opposite sides for mounting the first synchronous arm 26 and the second synchronous arm 27.

[0118] Specifically, both connecting ears 2533 are provided with a first pivot portion 2524. The first pivot portion 2524 may be a pivot hole. The axes of the two pivot holes are arranged in parallel so that the first synchronizing arm 26 is disposed in one pivot hole and rotatably connected to the first mounting base 252, and rotates about the first rotation axis (i.e., the axis of one first pivot portion 2524); so that the second synchronizing arm 27 is disposed in the other pivot hole and rotatably connected to the first mounting base 252, and rotates about the first rotation axis (i.e., the axis of one first pivot portion 2524).

[0119] The first mounting base 252 has an abutment portion 2525 on the side away from the first base body 2531 for engaging with the damping assembly 29. In one embodiment, the abutment portion 2525 may be a fixing post. The extending direction of the fixing post may be consistent with the extending direction of the first rotating shaft. In one embodiment, the abutment portion 2525 may be omitted.

[0120] Understandably, the first mounting base 252 can be configured in the same way as the second mounting base 253, and the second mounting base 253 can also be configured in the same way as the first mounting base 252.

[0121] Please see Figure 10 , Figure 12 and Figure 13 , Figure 12 and Figure 13 This application discloses the following: Figure 10 The diagram shows different perspective views of the synchronizing arm structure in the illustrated embodiment. There can be two synchronizing arms, such as a first synchronizing arm 26 and a second synchronizing arm 27. The first synchronizing arm 26 extends into the mounting cavity 15 of the rotating shaft support frame 10 and is rotatably connected to the first fixed base 25, and slidably connected to the first connecting seat 23. The second synchronizing arm 27 extends into the mounting cavity 15 of the rotating shaft support frame 10 and is rotatably connected to the first fixed base 25, and slidably connected to the second connecting seat 24.

[0122] Specifically, the synchronizing arms, such as the first synchronizing arm 26 and the second synchronizing arm 27, may include a synchronizing arm body 261 and a rotating shaft 262 fixedly connected to the synchronizing arm body 261.

[0123] The main body 261 of the synchronization arm can be made of a rigid material. The main body 261 can be a plate-like structure, a rod-like structure, or other structures, without further limitation. Here, we take a plate-like structure as an example. The main body 261 of the synchronization arm can include a first sliding part 263 and a fixing part 264 connected to the first sliding part 263.

[0124] A slider 2631 is provided on the first sliding part 263 so as to cooperate with the first connecting seat 23 or the second connecting seat 24. In one embodiment, the slider 2631 may be cylindrical or other rotating body structure so that the slider 2631 can rotate when sliding, that is, the first sliding part 263 rotates around the slider 2631.

[0125] A first sub-abutment portion 2632 is provided on the edge of the first sliding portion 263 near the fixed portion 264. The first sub-abutment portion 2632 extends from the edge of the first sliding portion 263 near the fixed portion 264 toward the display module 200 and bends toward the fixed portion 264, and is connected and fixed to the fixed portion 264.

[0126] The first abutment portion 2632 is connected and fixed to the side of the fixing portion 264 near the display module 200. A clearance space 2633 is formed between the first abutment portion 2632 and the fixing portion 264 to accommodate the support frame side wall 12 of the pivot support frame 10. This allows the support frame side wall 12 of the pivot support frame 10 to be partially or completely within the clearance space 2633 and abut against the first abutment portion 2632 when the electronic device 100 is fully extended. This serves as a limit and prevents the electronic device 100 from being damaged due to excessive extension angle when the support plate 50 is extended, such as overstretching damage to the display module 200.

[0127] The fixing part 264 may be made of a rigid material. The surface of the fixing part 264 near the display module 200 is flat so that it can be used to abut against the electronic device 100 when it is fully extended, thereby supporting the display module 200.

[0128] The fixing part 264 may include two parts, namely a first fixing part 265 and a second fixing part 266. A space may be formed between the first fixing part 265 and the second fixing part 266 to cooperate with the damping assembly 29.

[0129] The fixing part 264, such as the first fixing part 265 and the second fixing part 266, may include a fixing part body 2641 that is connected and fixed to the first sub-abutting part 2632.

[0130] The main body 2641 of the fixing part is provided with a fixing hole 2642 for inserting and fixing the rotating shaft 262, so as to realize the fixed connection between the fixing part 264 and the rotating shaft 262. The fixing hole 2642 of the first fixing part 265 and the fixing hole 2642 of the second fixing part 266 are coaxially arranged.

[0131] The fixing part 264 has a plurality of first limiting protrusions 2643 evenly distributed around the edge of the fixing hole 2642, so that the plurality of first limiting protrusions 2643 and the fixing part 264 form a smooth curved surface to cooperate with the damping component 29.

[0132] In one embodiment, the fixing part 264 may be integral with the first sliding part 263.

[0133] The pivot member 262 may be made of a rigid material. One end of the pivot member 262 may be mounted on a first pivot portion 2534 of the second mounting base 253 to achieve rotatable connection with the second mounting base 253 and rotate about a first rotation axis, while the other end is mounted on a first pivot portion 2524 of the first mounting base 252 to achieve rotatable connection with the first mounting base 252 and rotate about a first rotation axis.

[0134] In one embodiment, annular grooves 2621 are respectively provided on the outer surfaces of both ends of the rotating shaft 262 so that one end of the rotating shaft 262 is placed in the interface 2543 of the mounting base assembly 251, such as the snap-fit ​​component 254, so that the snap-fit ​​component body 2541 is placed in the groove 2621 to achieve snap-fit ​​engagement, so that the other end of the rotating shaft 262 can engage with the synchronization component 21.

[0135] In one embodiment, the rotating shaft 262 can be directly connected and fixed to the first mounting base 252 and the second mounting base 253, and the rotating shaft 262 passes through the fixing hole 2642 and is rotatably connected to the fixing part 264.

[0136] In one embodiment, the pivot 262 can be directly connected and fixed to the second mounting base 253, omitting the snap-fit ​​component 254.

[0137] The rotating shaft 262 may be provided with a transmission part 2622 so as to cooperate with the synchronous transmission assembly 28.

[0138] In one embodiment, the transmission part 2622 may be a gear. In another embodiment, the transmission part 2622 is disposed between the first fixed base 25 and the adjusting assembly 22. For example, the transmission part 2622 is disposed at the end of the rotating shaft 262 facing the adjusting assembly 22.

[0139] In one embodiment, the pivot 262 may be integral with the fixing part 264. In another embodiment, the fixing part 264 may be omitted, and the pivot 262 may be directly fixedly connected to the first sub-abutment part 2632.

[0140] Please see Figure 10 and Figure 14 , Figure 15 , Figure 14 and Figure 15 This application discloses the following: Figure 10 The exploded view of the synchronous transmission assembly 28 from different perspectives in the illustrated embodiment. The synchronous transmission assembly 28 may include a support base 281 disposed on the first rotating arm 26 and the second rotating arm 27, and a gear set 282 mounted on the support base 281.

[0141] The support base 281 may include a first sub-support base 283 disposed on the first rotating arm 26 and the second rotating arm 27, and a second sub-support base 284 disposed on the first rotating arm 26 and the second rotating arm 27. The first sub-support base 283 and the second sub-support base 284 cooperate to mount the gear set 282.

[0142] The first sub-support 283 may be made of a rigid material. The first sub-support 283 may include a support body 2831 that abuts against the fixing portion 264 of the first rotating arm 26 and the fixing portion 264 of the second rotating arm 27, respectively. The support body 2831 is located on the side of the first mounting base 252 away from the second mounting base 253. The support body 2831 is provided with a plurality of first through holes 2832 and a plurality of second through holes 2833. The plurality of first through holes 2832 are used to mount the gear set 282.

[0143] Multiple second through holes 2833 correspond one-to-one with multiple first pivot portions 2524, such as pivot holes, on the first mounting base 252. Correspondingly, one second through hole 2833 is coaxially arranged with one first pivot portion 2524, such as a pivot hole, so as to mount the first sub-support 283 on the first rotating arm 26 and the second rotating arm 27.

[0144] A support portion 2834 extends from the center of the edge of the support body 2831 near the display module 200 toward the first mounting base 252. The support portion 2834 is located between the fixing portion 264 of the first rotating arm 26 and the fixing portion 264 of the second rotating arm 27, to cover the gap between the fixing portions 264 and 264 of the second rotating arm 27, and to abut against the support plate 50 to support the support plate 50. In one embodiment, the support portion 2834 may be omitted.

[0145] In one embodiment, the first sub-support 283 may not be rotatably connected to the first rotating arm 26 or the second rotating arm 27. The first sub-support 283 may be fixed to the rotating shaft support frame 10, such as the support frame body 11, by means of screwing, plugging, welding, or bonding. Of course, the first sub-support 283 may also be an integral structure with the rotating shaft support frame 10, such as the support frame body 11.

[0146] The second sub-support 284 may be made of a rigid material. The second sub-support 284 may include a support body 2841 disposed opposite to the first sub-support 2831. The support body 2841 is located on the side of the first sub-support 2831 away from the first mounting base 252. The support body 2831 is provided with a plurality of first pivot holes 2842 that mate with the gear set 282 and a plurality of second pivot holes 2843 that mate with the first rotating arm 26 and the second rotating arm 27. The axes of the plurality of first pivot holes 2842 and the plurality of second pivot holes 2843 are arranged parallel to each other. The plurality of first pivot holes 2842 are used to mate with the gear set 282. One of the plurality of second pivot holes 2843 is used to mount the first rotating arm 26, facilitating a rotatable connection between the first rotating arm 26 and the second sub-support 284. Another second pivot hole 2843 is used to mount the second rotating arm 27, facilitating a rotatable connection between the second rotating arm 27 and the second sub-support 284.

[0147] Understandably, the second pivot hole 2843 corresponds one-to-one with the first pivot portion 2534 on the connecting ear 2533, and is coaxially arranged. This allows the first rotating arm 26 to pass through one corresponding second pivot hole 2843 and one connecting ear 2533, and the second rotating arm 27 to pass through the other corresponding second pivot hole 2843 and another connecting ear 2533. The second pivot hole 2843 corresponds one-to-one with the second through hole 2833 on the first sub-support 283, and is coaxially arranged. This allows the first rotating arm 26 to pass through one corresponding second pivot hole 2843 and one second through hole 2833, and the second rotating arm 27 to pass through the other corresponding second pivot hole 2543 and another second through hole 2833.

[0148] The first pivot hole 2842 corresponds one-to-one with the first through hole 2832 on the first sub-support 283 and is coaxially arranged to install the gear set 282.

[0149] In one embodiment, the support body 2841 is provided with an opening 2844 communicating with the second pivot hole 2843 to install the first rotating arm 26 and the second rotating arm 27. The opening 2844 extends radially along the second pivot hole 2843. In one embodiment, the diameter of the second pivot hole 2843 near the first mounting base 252 is smaller than the diameter of the end away from the first mounting base 252, so as to form a locking position for securing the first rotating arm 26 and the second rotating arm 27, preventing the first rotating arm 26 and the second rotating arm 27 from disengaging from the rotational connection with the second sub-support 284 in the axial direction of the second pivot hole 2843.

[0150] In one embodiment, a positioning part 2845 is provided on the side of the support base body 2841 facing the display module 200 for positioning with the support plate 50. In one embodiment, the positioning part 2845 is a protrusion.

[0151] In one embodiment, the support body 2841 may be provided with a snap-fit ​​member 2846. The snap-fit ​​member 2846 may be placed at the end with the larger diameter of the second pivot hole 2843 and snapped into the slot 2621 of the rotating shaft member 262. Specifically, the first rotating arm 26 or the second rotating arm 27 extends into the second pivot hole 2843, such that the end with the slot 2621 is placed at the end with the larger diameter of the second pivot hole 2843, and the snap-fit ​​member 2846 extends into the second pivot hole 2843 from the opening 2844, so that one end of the rotating shaft member 262 is placed in the snap-fit ​​interface of the snap-fit ​​member 2846, so that the snap-fit ​​member 2846 is placed in the slot 2621, thereby achieving a snap-fit ​​engagement.

[0152] In one embodiment, the second sub-support 284 may not be rotatably connected to the first rotating arm 26 or the second rotating arm 27. The second sub-support 284 can be fixed to the rotating shaft support frame 10, such as the support frame body 11, by means of screwing, plugging, welding, or bonding. Of course, the second sub-support 284 may also be an integral structure with the rotating shaft support frame 10, such as the support frame body 11. In other embodiments, the first sub-support 283 may be an integral structure with the second sub-support 284.

[0153] Please see Figure 14 and Figure 15 The gear set 282 may include an even number of gears that mesh sequentially. The transmission part 2622 of the first rotating arm 26, the even number of gears, and the transmission part 2622 of the second rotating arm 27 mesh sequentially. Correspondingly, a first pivot hole 2842 and a first through hole 2832 are used to fix one gear. One end of the gear's rotating shaft passes through the first pivot part 2842 and is rotatably connected to the second sub-support 284, such as the support body 2841. The other end of the gear's rotating shaft passes through the first through hole 2832 and is rotatably connected to the first sub-support 283, such as the support body 2831.

[0154] In one embodiment, the gear set 282 may be two meshing gears, one of which meshes with the transmission part 2622 of the first rotating arm 26, and the other gear meshes with the transmission part 2622 of the second rotating arm 27.

[0155] The design of an even number of gears allows the first rotating arm 26 to rotate in the forward direction while the second rotating arm 27 rotates in the reverse direction, achieving synchronous rotation of the first rotating arm 26 and the second rotating arm 27. This prevents one rotating arm from rotating while the other does not, or the rotation amplitude of one rotating arm differs from that of the other, thus protecting the display module 200.

[0156] In one embodiment, the synchronous transmission component 28 may be omitted, and transmission is achieved solely through the meshing of the transmission portion 2622 of the first rotating arm 26 and the transmission portion 2622 of the second rotating arm 27.

[0157] Please see Figure 10 The damping assembly 29 may include two components: a first damping assembly 291 and a second damping assembly 292. Each damping assembly 29 may include an elastic member 293 that provides compressive force and a limiting member 294 that is subjected to force by the elastic member 293 and limits the first synchronous arm 26 and the second synchronous arm 27 under the applied force. The elastic member 293 compresses the limiting member 294, thereby increasing the static friction between the limiting member 294 and the contact surfaces of the first synchronous arm 26 and the second synchronous arm 27, resulting in better damping effect of the electronic device 100 during folding and thus improving the user's handling experience.

[0158] It is understood that the terms "first damping component," "second damping component," and "damping component" can be used interchangeably in some embodiments. For example, in one embodiment, the "first damping component" in other embodiments is referred to as the "second damping component," and correspondingly, the "second damping component" in other embodiments is referred to as the "first damping component."

[0159] The elastic element 293 is made of an elastic material. The elastic element 293 can be a spring, or it can be other structural forms made of elastic material, such as a torsion spring or a rubber band, etc., without specific limitations.

[0160] Taking the elastic element 293 as an example, a spring is sleeved on the pivot 262 of the first synchronous arm 26 and the pivot 262 of the second synchronous arm 27. One end of the spring abuts against the first fixed base 25, for example, a connecting lug, and the other end abuts against the limiting member 294. In one embodiment, the elastic element 293 can be sleeved on the pivot 262 of the first synchronous arm 26 or the pivot 262 of the second synchronous arm 27. In another embodiment, the elastic element 293 can also be located in other positions. In one embodiment, since the first mounting base 252 is provided with an abutment portion 2525, one end of the elastic element 293 can cooperate with the abutment portion 2525, and the other end abuts against the limiting member 294. Since the abutment portion 2525 is a fixed post, the spring can be sleeved on the fixed post, so that one end of the spring abuts against the first mounting base 252, for example, the first base body 2521. Understandably, in the first mounting base 252, the elastic element 293 may be provided only at the abutment portion 2525, or the elastic element 293 may be provided only on the pivot 262 of the first synchronous arm 26 and the pivot 262 of the second synchronous arm 27.

[0161] Please see Figure 10 and Figure 16 , Figure 16 This application discloses Figure 10 The illustrated embodiment shows a schematic diagram of the limiting member 294. The limiting member 294 may be made of a rigid material. The limiting member 294 may include a limiting member body 2941. The limiting member body 2941 has through holes 2942 on opposite sides, allowing the rotating shaft 262 of the first synchronizing arm 26 to pass through one through hole 2942, thus achieving a rotatable connection between the first synchronizing arm 26 and the limiting member 294, allowing the limiting member body 2941 to slide along the axial direction of the rotating shaft 262 of the first synchronizing arm 26; and allowing the rotating shaft 262 of the second synchronizing arm 27 to pass through one through hole 2942, thus achieving a rotatable connection between the second synchronizing arm 27 and the limiting member 294, allowing the limiting member body 2941 to slide along the axial direction of the rotating shaft 262 of the second synchronizing arm 27.

[0162] The limiting member body 2941 has a plurality of second limiting protrusions 2943 evenly distributed on the edge of the through hole 2942 and on the circumference away from the elastic member 293, so that the plurality of second limiting protrusions 2943 and the limiting member body 2941 form a smooth curved surface, and the smooth curved surface on the limiting member body 2941 can abut against the smooth curved surface on the fixing part 264.

[0163] It is understood that the terms "first limiting protrusion", "second limiting protrusion" and "limiting protrusion" can be interchanged in some embodiments. For example, in one embodiment, the "first limiting protrusion" in other embodiments is referred to as the "second limiting protrusion", and correspondingly, the "second limiting protrusion" in other embodiments is referred to as the "first limiting protrusion".

[0164] When the first synchronous arm 26 and the second synchronous arm 27 rotate, the smooth curved surface on the fixed part 264 abuts against and slides relative to the smooth curved surface of the limiting member 294. With the cooperation of the first limiting protrusion 2643 and the second limiting protrusion 2943, the limiting member 294 slides along the axial direction of the rotating shaft 262, thereby compressing or extending the elastic member 293. During the synchronous rotation of the first synchronous arm 26 and the second synchronous arm 27, the damping component 29 provides a damping effect. That is, the damping force provided by the damping component 29 must be overcome in order to achieve synchronous rotation of the first synchronous arm 26 and the second synchronous arm 27.

[0165] In one embodiment, the density of the first limiting protrusion 2643 and the second limiting protrusion 2943 can be set as needed. For example, each first limiting protrusion 2643 and each second limiting protrusion 2943 can be a unit rotation stroke. Within a unit rotation stroke, the elastic element 293 can experience at least one compression and one expansion. Therefore, when the first synchronous arm 26 and the second synchronous arm 27 rotate, a force needs to be applied to the first synchronous arm 26 and the second synchronous arm 27 to overcome the force of the elastic element 293. When the first synchronous arm 26 and the second synchronous arm 27 do not rotate, the force of the elastic element 293 cannot be overcome by the force of the electronic device 100 itself, thereby maintaining the stability of the electronic device 100.

[0166] In one embodiment, the electronic device 100 may only undergo one unit rotation stroke during the process of unfolding from a fully folded state to a fully unfolded state. Therefore, due to the action of the elastic element 293, the electronic device 100 can be quickly unfolded or folded during the unfolding or folding process.

[0167] In one embodiment, the electronic device 100 undergoes multiple unit rotational strokes during its unfolding from a fully folded state to a fully unfolded state. Therefore, during unfolding or folding, the electronic device 100 can be positioned between a fully folded state and a fully unfolded state solely by the action of the elastic member 293. When the density of the first limiting protrusion 2643 and the second limiting protrusion 2943 is sufficiently high, the electronic device 100 can be positioned between a fully folded state and a fully unfolded state solely by the action of the elastic member 293.

[0168] In one embodiment, the damping component 29 may be omitted.

[0169] In one embodiment, please refer to Figure 10 and Figure 17 , Figure 18 , Figure 17 This application discloses Figure 10The schematic diagram of the synchronization component 21 in the embodiment shown is as follows. Figure 18 This application discloses Figure 10 The schematic diagram shows the connection between the synchronization component 21 and the rotating shaft support frame 10 in the illustrated embodiment. The synchronization component 21 is mounted on the first pivot portion of the first fixed base 25 and can rotate around the first rotating shaft. The first mounting base 252 and the second mounting base 253 are located on both sides of the first damping component 291. The first fixing portion 265 and the second fixing portion 266 are located on both sides of the first mounting base 252. The transmission portion 2622 is located on the side of the second fixing portion 266 away from the first fixing portion 265. In the damping component 29, the first damping component 291 is disposed between the second mounting base 253 and the first fixing portion 265. In the damping component 29, the second damping component 292 is disposed between the first mounting base 252 and the second fixing portion 266, and the elastic element 293 in the second damping component 292 abuts against the first mounting base 252, and the limiting element 294 in the second damping component 292 abuts against the second fixing portion 266. The first limiting protrusion 2643 on the first fixing part 265 is provided on the side of the first fixing part 265 facing the second mounting base 253. The first limiting protrusion 2643 on the second fixing part 266 is provided on the side of the second fixing part 266 facing the first mounting base 252.

[0170] In one embodiment, the first damping component 291 may be omitted. In one embodiment, the first fixing part 265 may be omitted. In one embodiment, the second fixing part 266 may be omitted, and a first limiting protrusion 2643 may be provided on both sides of the first fixing part 265, so that the first limiting protrusion 2643 on one side cooperates with the first damping component 291, and the first limiting protrusion 2643 on the other side cooperates with the second damping component 292.

[0171] The first limiting protrusion 2643 is located between two adjacent second limiting protrusions 2943. When the first limiting protrusion 2643 abuts against the two adjacent second limiting protrusions 2943, the electronic device 100 can correspond to one of two states: fully folded or fully unfolded. When the first limiting protrusion 2643 abuts against the second limiting protrusions 2943 and is arranged opposite to them, the electronic device 100 can correspond to the other state: fully folded or fully unfolded. This design can ensure the stability of the electronic device 100 in both fully folded and fully unfolded states.

[0172] Please see Figure 19 It discloses the contents of this application. Figure 10The exploded view of the adjustment component 22 in the illustrated embodiment. The adjustment component 22 may include a second fixed base 221 fixedly mounted on the rotating shaft support frame 10, such as the support frame body 11; rotating arms 224 rotatably connected to the second fixed base 221 and disposed on both sides of the extending direction of the rotating shaft support frame 10; and connecting arms 227 rotatably connected to the second fixed base 221 and disposed on both sides of the extending direction of the rotating shaft support frame 10.

[0173] It is understood that the names "first fixed base", "second fixed base", "fixed base", "first mounting base", "second mounting base", "mounting base" and "base" can be interchanged in some embodiments. For example, in one embodiment, the "first fixed base" in other embodiments is referred to as the "second fixed base", and correspondingly, the "second fixed base" in other embodiments is referred to as the "first fixed base".

[0174] It is understood that the names "first connecting arm", "second connecting arm", "first synchronizing arm", "second synchronizing arm", "first rotating arm", "second rotating arm", "synchronizing arm", "rotating arm" and "connecting arm" can be interchanged in some embodiments. For example, in one embodiment, the "first connecting arm" in other embodiments is called the "second connecting arm", and correspondingly, the "second connecting arm" in other embodiments is called the "first connecting arm".

[0175] The second fixed base 221 may be made of a rigid material. The second fixed base 221 is located within the mounting cavity 15 of the rotating shaft support frame 10. The second fixed base 221 may include a second base body 2211 mounted on the rotating shaft support frame 10, for example, the support frame body 11.

[0176] It is understood that the terms "first base body", "second base body" and "base body" can be interchanged in some embodiments. For example, in one embodiment, the "first base body" in other embodiments is referred to as the "second base body", and correspondingly, the "second base body" in other embodiments is referred to as the "first base body".

[0177] The second base body 2211 is fixedly fitted to the rotating shaft support frame 10, for example, the support frame body 11. In one embodiment, the second base body 2211 can be connected and fixed to the support frame body 11 on the rotating shaft support frame 10 by means of bolts, screws, or other structures. It is understood that other connection methods can also be used, such as plug-in, welding, or bonding. In one embodiment, the second base body 2211 and the support frame body 11 can be an integral structure. In one embodiment, the second base body 2211 can be an integral structure with the first fixed base 25. In one embodiment, the second base body 2211 can be an integral structure with the second sub-support 284.

[0178] The second base body 2211 has multiple partition plates 2212 on the side near the display module 200 for mounting and fixing the rotating arm 224 and the connecting arm 227. The partition plates 2212 facing the display module 200 are flat, which facilitates contact with the support plate 50 to support the support plate 50.

[0179] Each of two adjacent partition plates 2212, such as the first sub-partition plate 2212a and the second sub-partition plate 2212b, is provided with a second pivot portion 2213. The second pivot portion 2213 is located between two adjacent first partition plates 2213 so as to be rotatably connected to the rotating arm 224 through the second pivot portion 2213, allowing the rotating arm 224 to rotate about a second rotation axis. In one embodiment, the second pivot portion 2213 may be a pivot hole.

[0180] Each of two adjacent partition plates 2212, such as the second sub-partition plate 2212b and the third sub-partition plate 2212c, is provided with a third pivot portion 2214. The third pivot portion 2214 is located between the two adjacent partition plates 2212 so as to rotatably connect with the connecting arm 227 through the third pivot portion 2214, allowing the connecting arm 227 to rotate about a third rotation axis. In one embodiment, the third pivot portion 2216 may be a slider, specifically an arc-shaped structure.

[0181] It is understood that the names "first rotating shaft", "second rotating shaft", "third rotating shaft", "rotating shaft" and "rotating axis" can be interchanged in some embodiments. For example, in one embodiment, the "first rotating shaft" in other embodiments is called the "second rotating shaft", and correspondingly, the "second rotating shaft" in other embodiments is called the "first rotating shaft".

[0182] Please refer to the following: Figure 20 , Figure 20 This application discloses Figure 9The exploded view of the second fixed base 221 and the second sub-support 284 in the illustrated embodiment is shown. The second base body 2211 has a connector 2215 on the side near the synchronization component 21, such as the second sub-support 284, for connection with the synchronization component 21, such as the second sub-support 284. In one embodiment, the connector 2215 may be a protrusion that can extend into the first pivot hole 2842 to achieve insertion with the synchronization component 21, such as the second sub-support 284.

[0183] It is understood that the names "first sub-separator", "second sub-separator", "third sub-separator", "fourth sub-separator" and "separator" can be interchanged in some embodiments. For example, in one embodiment, the "first sub-separator" in other embodiments is called the "second sub-separator", and correspondingly, the "second sub-separator" in other embodiments is called the "first sub-separator".

[0184] Please see Figure 19 There may be two rotating arms 224, such as a first rotating arm 225 and a second rotating arm 226. The rotating arms 224, such as the first rotating arm 225 and the second rotating arm 226, may include a second sliding part 2241 and a connecting part 2242 connected to the second sliding part 2241.

[0185] It is understood that the terms "first sliding part", "second sliding part" and "sliding part" can be interchanged in some embodiments. For example, in one embodiment, the "first sliding part" in other embodiments is called the "second sliding part", and correspondingly, the "second sliding part" in other embodiments is called the "first sliding part".

[0186] The second sliding part 2241 can be made of a rigid material. The second sliding part 2241 serves a guiding function and can cooperate with the first connecting seat 23 or the second connecting seat 24. The second sliding part 2241 can be a plate-like structure, a rod-like structure, or other structures, without further limitation. Here, we take a generally plate-like structure as an example. The second sliding part 2241 is provided with a sub-push-pull part 2243 to cooperate with the first support plate 30 or the second support plate 40. In one embodiment, the sub-push-pull part 2243 is specifically a pivot shaft, allowing the second sliding part 2241 to rotate around the sub-push-pull part 2243. In one embodiment, the second sliding part 2241 has a notch 2244 at a position opposite to the sub-push-pull part 2243 to allow space for the first support plate 30 or the second support plate 40.

[0187] A second sub-abutment 2245 is provided on the edge of the second sliding portion 2241 near the connecting portion 2242. The second sub-abutment 2245 extends from the edge of the second sliding portion 2241 near the connecting portion 2242 toward the display module 200 and bends toward the connecting portion 2242, and is connected and fixed to the connecting portion 2242.

[0188] The second abutment portion 2245 is connected and fixed to the side of the connecting portion 2242 near the display module 200. A clearance space 2246 is formed between the second abutment portion 2245 and the connecting portion 2242 to accommodate the support frame side wall 12 of the pivot support frame 10. This allows the support frame side wall 12 of the pivot support frame 10 to be partially or completely within the clearance space 2246 and abut against the second abutment portion 2245 when the electronic device 100 is fully unfolded after the unfolding action. This serves as a limit to prevent the electronic device 100 from unfolding at an excessively large angle, which could damage the electronic device 100, such as overstretching damage to the display module 200.

[0189] The connecting part 2242 may be made of a rigid material. The surface of the connecting part 2242 near the display module 200 is flat, so as to abut against the display module 200 and serve to support the display module 200.

[0190] The connecting portion 2242 is provided with a second pivot portion 2247 for pivotal connection with the second pivot portion 2213 of the second fixed base 221. In one embodiment, the second pivot portion 2213 is a pivot hole for connecting the second pivot portion 2247 of the connecting portion 2242 and the second pivot portion 2213 of the second fixed base 221 via a rotating shaft.

[0191] Since the second sliding part 2241 can be used to mate with the first connecting seat 23 or the second connecting seat 24, the first housing 400 and the second housing 600 need to provide clearance for the second sliding part 2241 when it slides. This affects the utilization of the internal space of the first housing 400 and the second housing 600, resulting in excessive space waste. For this reason, please refer to... Figure 21 , Figure 21 This application discloses Figure 19 The exploded view of the rotating arm 224 in the illustrated embodiment. The second sliding part 2241 may include a first telescopic part 2248 and a second telescopic part 2249 slidably connected to the first telescopic part 2248. The first telescopic part 2248 and the second telescopic part 2249 can slide in the sliding direction of the second sliding part 2241 to adjust the length of the second sliding part 2241, preventing the second sliding part 2241 from occupying the internal space of the first housing 400 and the second housing 600, thus making reasonable use of the internal space of the first housing 400 and the second housing 600.

[0192] Figure 21 The second sliding part 2241 adopts the design of the first telescopic part 2248 and the second telescopic part 2249, which breaks through the limitation of the mating length between parts under the limited width, making the width of the rotating shaft module 20 smaller, greatly improving the internal space of the electronic device 100 and the product performance, and enhancing the product's competitive advantage.

[0193] Please see Figure 21 A sub-push-pull portion 2243 is disposed on the first telescopic portion 2248. The first telescopic portion 2248 has a notch 2244 corresponding to the sub-push-pull portion 2243. The first telescopic portion 2248 is provided with a guide rail 2250 for engaging with the second telescopic portion 2249. The guide rail 2250 has a limiting portion 2251 to achieve sliding limitation with the second telescopic portion 2249, thereby preventing the first telescopic portion 2248 from disengaging from the connection with the second telescopic portion 2249.

[0194] Understandably, in some embodiments, the sub-push-pull portion 2243 may be part of the first telescopic portion 2248. In some embodiments, the connecting portion 2242 may be integral with the first telescopic portion 2248. In some embodiments, the connecting portion 2242 may also be part of the first telescopic portion 2248.

[0195] The second telescopic part 2249 is provided with a slide rail 2252 so that the guide rail 2250 can slide within the slide rail 2252.

[0196] In one embodiment, a clearance slide rail 2253 is provided within the slide rail 2252 so that the limiting part 2251 can slide within the clearance slide rail 2253 and be limited at a specific position to prevent the first telescopic part 2248 from disengaging from the connection relationship with the second telescopic part 2249. The slide rail 2252 is provided with a limiting part 2254 to cooperate with the first connecting seat 23 or the second connecting seat 24 to prevent the second telescopic part 2249 from disengaging from the connection relationship with the first connecting seat 23 or the second connecting seat 24. Of course, other methods can also be used to limit the relative position of the first telescopic part 2248 and the second telescopic part 2249. For example, a first elastic element can be used. The first elastic element can be disposed between the first telescopic part 2248 and the second telescopic part 2249. In the absence of external force, the first elastic element can keep the first telescopic part 2248 and the second telescopic part 2249 in a contracted or extended state. In the presence of external force, the elastic force of the first elastic element can be overcome by the external force to change the contracted or extended state of the first telescopic part 2248 and the second telescopic part 2249, thereby adjusting the relative position of the first telescopic part 2248 and the second telescopic part 2249 in the sliding direction. In one embodiment, the first elastic element can be a tension spring, but it can also be an elastic element of other structures. One end of the first elastic element is fixed to the first telescopic part 2248, and the other end is fixed to the second telescopic part 2249. The sliding of the first telescopic part 2248 and the second telescopic part 2249 in opposite directions under the action of external force can increase the elastic force of the first elastic element. When no external force is applied, the first telescopic part 2248 and the second telescopic part 2249 can slide towards each other under the elastic force of the first elastic member.

[0197] The second telescopic part 2249 is provided with a notch 2255 to correspond to the notch 2244, so as to make way for the first support plate 30 or the second support plate 40.

[0198] Please see Figure 19 The connecting part 2242 of the first rotating arm 225 and the connecting part 2242 of the second rotating arm 226 are simultaneously placed between two adjacent partition plates 2213, for example, between the first sub-partition plate 2212a and the second sub-partition plate 2212b.

[0199] Please refer to it again. Figure 19 There may be two connecting arms 227, such as a first connecting arm 228 and a second connecting arm 229. The connecting arms 227, such as the first connecting arm 228 and the second connecting arm 229, may include a connecting arm body 2271 and a connecting part 2272 that is connected and fixed to the connecting arm body 2271.

[0200] The connecting arm body 2271 has a rotatable connecting portion 2273 at one end away from the second base body 2211, for pivotal connection with the first connecting seat 23 or the second connecting seat 24. In one embodiment, the rotatable connecting portion 2273 is a pivot hole or a pivot shaft, so as to rotatably connect with the first connecting seat 23 or the second connecting seat 24.

[0201] The surface of the connecting part 2272 near the display module 200 is flat so as to support the display module 200 when the electronic device 100 is unfolded.

[0202] A third pivot portion 2274 is provided on the connecting portion 2272 for pivotal connection with the third pivot portion 2214 of the second fixed base 221. The connecting portion 2272 is positioned between two adjacent partition plates 2212, such as the second sub-partition plate 2212b and the third sub-partition plate 2212c. In one embodiment, the third pivot portion 2274 may be a groove provided on the surface of the connecting portion 2272 near the partition plate 2212, and the groove is generally arc-shaped.

[0203] In one embodiment, the groove extends toward the display module 200 and an inlet is formed on the surface of the connecting portion 2272 near the display module 200, so that the third pivot portion 2213, such as a slider, enters the groove from the inlet and slides in the groove along the groove extension direction, thereby realizing the rotatable connection between the first connecting arm 228 or the second connecting arm 229 and the second fixed base 221, and rotating around the third rotation axis, thereby realizing the installation and disassembly of the first connecting arm 228 or the second connecting arm 229 and the second fixed base 221.

[0204] Please see Figure 19 The first rotating arm 225 and the second rotating arm 226 are symmetrically arranged and mounted on the first sub-partition plate 2212a and the second sub-partition plate 2212b on the second fixed base 221. The first connecting arm 228 and the second connecting arm 229 are symmetrically arranged and mounted on the second sub-partition plate 2212b and the third sub-partition plate 2212c on the second fixed base 221. When the electronic device 100 is folded or unfolded, the first rotating arm 225 rotates about a second rotating axis relative to the second fixed base 221, the second rotating arm 226 rotates about a second rotating axis relative to the second fixed base 221, the first connecting arm 228 rotates about a third rotating axis relative to the second fixed base 221, and the second connecting arm 229 rotates about a third rotating axis relative to the second fixed base 221.

[0205] In one embodiment, the connecting arm 227 can be connected to the second fixed base 221 via a pivotal connection between the rotating arm 224 and the second fixed base 221. In another embodiment, the rotating arm 224 can also be connected to the second fixed base 221 via a pivotal connection between the connecting arm 227 and the second fixed base 221.

[0206] In one embodiment, the second fixing base 221 may be replaced Figure 10 The first fixed base 25, the first synchronous arm 26 and the second synchronous arm 27 can be connected to the first fixed base 25 by means of connecting arm 227 and second fixed base 221 respectively.

[0207] In one embodiment, the first synchronizing arm 26, the second synchronizing arm 27, the first connecting arm 228, and the second connecting arm 229 can all be rotatably connected to the first fixed base 25 in the manner described above, and the first rotating arm 225 and the second rotating arm 226 can both be rotatably connected to the second fixed base 221 in the manner described above.

[0208] In one embodiment, the first synchronizing arm 26, the second synchronizing arm 27, the first connecting arm 228, and the second connecting arm 229 can all be rotatably connected to the first fixed base 25 in the manner described above, and the first rotating arm 225 and the second rotating arm 226 can both be rotatably connected to the second fixed base 221 in the manner described above.

[0209] In one embodiment, the first rotating arm 225, the second rotating arm 226, the first connecting arm 228, and the second connecting arm 229 can all be rotatably connected to the first fixed base 25 in the manner described above, and the first synchronizing arm 26 and the second synchronizing arm 27 can both be rotatably connected to the second fixed base 221 in the manner described above.

[0210] Please see Figure 22 It discloses the contents of this application. Figure 9 The illustrated embodiment shows a schematic diagram of the structure of the first connecting seat 23 and the second connecting seat 24. The connecting seats can be made of rigid materials. There can be two connecting seats, such as the first connecting seat 23 and the second connecting seat 24. The connecting seats, such as the first connecting seat 23 and the second connecting seat 24, may include a connecting seat body 231 mounted on the first housing 400 or the second housing 600, such as the connecting plate 402; a first guide portion 232 disposed on the connecting seat body 231 and slidably connected to the synchronization component 21, such as the first sliding portion 263; a second guide portion 233 disposed on the connecting seat body 231 and slidably connected to the rotating arm 224, such as the second sliding portion 2241; and a rotating connecting portion 234 disposed on the connecting seat body 231 and pivotally connected to the connecting arm 227, such as the rotating connecting portion 2273.

[0211] Specifically, the main body 231 of the connector can be connected and fixed to the housing, such as the connecting plate 402 of the first housing 400 and the second housing 600, by means of bolts, screws, or other structures. Understandably, other connection methods, such as plug-in, welding, or bonding, can also be used for connection and fixation.

[0212] Please see Figure 22 and Figure 23 , Figure 23 This application discloses Figure 8 The exploded view of the connection between the connecting seat and connecting arm 227, rotating arm 224, and synchronizing arm in the illustrated embodiment is shown. The first guide portion 232 is an arc-shaped groove formed on the connecting seat body 231, so that the slider 2631 of the synchronizing arm, such as the first synchronizing arm 26 or the second synchronizing arm 27, is placed in the arc-shaped groove and slides along the extension direction of the arc-shaped groove, thereby realizing the rotational connection between the synchronizing arm, such as the first synchronizing arm 26 or the second synchronizing arm 27, and the connecting seat body 231.

[0213] In one embodiment, please refer to Figure 22 and Figure 23 The second guide portion 233 can be two opposing linear slide rails, with a clearance space between the two linear slide rails, so that the second sliding portion 2241 of the rotating arm 224, such as the first rotating arm 225 and the second rotating arm 226, can be placed in the clearance space, thereby realizing the sliding connection between the second guide portion 233 and the second sliding portion 2241, and sliding in the extension direction of the second guide portion 233 and the sliding direction of the second sliding portion 2241.

[0214] In one embodiment, the second guide portion 233 is provided with a clearance slide rail 2331, so that the limiting portion 2254 of the second telescopic portion 2249 slides within the clearance slide rail 2253 and is limited at a specific position to prevent the second telescopic portion 2249 from disengaging from the connection with the first connecting seat 23 or the second connecting seat 24. Of course, other methods can also be used to limit the relative position of the second telescopic portion 2249 with one of the first connecting seat 23 and the second connecting seat 24.

[0215] For example, a second elastic element can be used, which can be disposed between the second telescopic part 2249 and the first connecting seat 23. Without external force, the second elastic element allows the second telescopic part 2249 and the first connecting seat 23 to be in a contracted or extended state. With external force, the elastic force of the second elastic element can be overcome, thereby changing the contracted or extended state of the second telescopic part 2249 and the first connecting seat 23, and thus adjusting the relative position of the second telescopic part 2249 and the first connecting seat 23 in the sliding direction. In one embodiment, the first elastic element can be a tension spring, but it can also be an elastic element of other structures. One end of the first elastic element is fixed to the second telescopic part 2249, and the other end is fixed to the first connecting seat 23. Under the action of external force, the second telescopic part 2249 and the first connecting seat 23 slide in opposite directions, which increases the elastic force of the first elastic element. Without external force, the second telescopic part 2249 and the first connecting seat 23 can slide towards each other under the elastic force of the first elastic element.

[0216] For example, a second elastic element can be used, which can be disposed between the second telescopic part 2249 and the second connecting seat 24. Without external force, the second elastic element allows the second telescopic part 2249 and the second connecting seat 24 to be in a contracted or extended state. With external force, the elastic force of the second elastic element can be overcome to change the contracted or extended state of the second telescopic part 2249 and the second connecting seat 24, thereby adjusting the relative position of the second telescopic part 2249 and the second connecting seat 24 in the sliding direction. In one embodiment, the first elastic element can be a tension spring, but it can also be an elastic element of other structures. One end of the first elastic element is fixed to the second telescopic part 2249, and the other end is fixed to the second connecting seat 24. Under the action of external force, the second telescopic part 2249 and the second connecting seat 24 slide backwards, which increases the elastic force of the first elastic element. Without external force, the second telescopic part 2249 and the second connecting seat 24 can slide towards each other under the elastic force of the first elastic element.

[0217] In one embodiment, please refer to Figure 22 and Figure 23 The rotating connection 234 can be a pivot hole or a rotating shaft, so as to connect with the rotating connection 2273 of the connecting arm 227.

[0218] The connecting seat body 231 is provided with a fourth pivot portion 235, which facilitates rotatable connection with the first support plate 30 or the second support plate 40. In one embodiment, the fourth pivot portion 235 is an arc-shaped groove. In another embodiment, the fourth pivot portion 235 may be a circular arc-shaped groove. The fourth pivot portion 235 allows the first support plate 30 or the second support plate 40 to slide within the arc-shaped groove along the extending direction of the arc-shaped groove. This achieves a rotatable connection between the first support plate 30 or the second support plate 40 and the connecting seat body 231.

[0219] Please see Figure 22 and Figure 23When the rotating arm 224 rotates, the connecting arm 227 also rotates simultaneously. Since the axis of rotation of the rotating arm 224 (i.e., the second rotation axis) is parallel to the axis of rotation of the connecting arm 227 (i.e., the third rotation axis), and the third rotation axis is closer to the display module 200 than the second rotation axis, the movement trajectories of the rotating arm 224 and the connecting arm 227 are different. Consequently, the connecting seat rotates with the rotating arm 224, rotating within the length limitation of the connecting arm 227. To compensate for the difference in axis position, the second sliding part 2241 of the rotating arm 224 slides relative to the second guide part 233. Simultaneously, the first telescopic part 2248 and the second telescopic part 2249 slide relative to each other, adjusting the length of the second sliding part 2241. Furthermore, the connecting seat and the connecting arm 227 cause the rotating connecting part 2273 and the rotating connecting part 234 to rotate relative to each other, ensuring that the orientation of the connecting seat adapts to the rotating arm 224 and preventing the rotating arm 224 from being unable to slide relative to the connecting seat.

[0220] In order to make the rotating arm 224, such as the first rotating arm 225 and the second rotating arm 226, rotate synchronously, a synchronization component 21 is provided, which, under the constraint of the first synchronization arm 26 and the second synchronization arm 27, makes the rotating arm 224, such as the first rotating arm 225 and the second rotating arm 226, rotate synchronously.

[0221] Understandably, when the electronic device 100 is folded or unfolded, the shape of the display module 200 and the housing assembly 300 will be deformed. The design of the connecting seat and the rotating arm 224, connecting arm 227 and the synchronizing arm avoids spatial interference caused by deformation.

[0222] In one embodiment, when the first connecting seat 23 is mounted on the first housing 400, it can be part of the first housing 400. In another embodiment, the first connecting seat 23 and the first housing 400 are an integral structure.

[0223] In one embodiment, when the second connecting seat 24 is mounted on the second housing 600, it can be considered part of the second housing 600. In another embodiment, the second connecting seat 24 and the second housing 600 are an integral structure.

[0224] Understandably, there may be multiple pivot modules 20, and one pivot module 20, such as the second pivot module 20b, may only have an adjustment component 22. Of course, one pivot module 20, such as the second pivot module 20b, may also only have a synchronization component 21. In other embodiments, when multiple pivot modules 20 are combined into one pivot module 20, the pivot module 20 may contain at least one synchronization component 21 and at least one adjustment component 22, and the sum of the number of synchronization components 21 and the number of adjustment components 22 may be at least three.

[0225] Please see Figure 4 and Figure 24 , Figure 24 , Figure 24 This application discloses Figure 4 The schematic diagram of the first tray 30 and the second tray 40 in the embodiment shown is as follows. Figure 25 This application discloses Figure 4 The illustrated embodiment shows a schematic diagram of the connection between the tray, connecting seat, and rotating arm. There can be two trays, namely a first tray 30 and a second tray 40. The trays, for example, the first tray 30 and the second tray 40, may include a tray body 31 mounted on the rotating shaft module 20 and a pivot member 32 rotatably connected to the connecting seat, such as the first connecting seat 23 and the second connecting seat 24, and slidably connected to the adjusting assembly 22 and rotatably connected to the adjusting assembly 22. When the first housing 400 and the second housing 600 are folded, the first tray 30 rotates around the first connecting seat 23, and the second tray 40 rotates around the second connecting seat 24, to make room for the portion of the display module 200 corresponding to the folded portion of the first housing 400 and the second housing 600, thus preventing damage to the folded portion of the display module 200 corresponding to the folded portion of the first housing 400 and the second housing 600.

[0226] The tray body 31 may be made of a rigid material. The tray body 31 has a plate-like structure and is mounted on the surface of the rotating module 20, such as the first rotating arm 225 and the second rotating arm 226, near the display module 200. The surface of the tray body 31 near the display module 200 abuts against the display module 200 to support the display module 200.

[0227] The tray body 31 has a clearance portion 311 at its edge facing the pivot support frame 10 to allow space for the pivot module 20. In addition, when the electronic device 100 is fully folded, the clearance portion 311 will allow space for the pivot module 20, so that the tray body 31 is not spatially interfered with by the pivot module 20 when rotating.

[0228] The pivot member 32 may include a first pivot member 321 rotatably connected to the adjustment assembly 22, such as the rotating arm 224, and a second pivot member 322 rotatably connected to the connecting seat in cooperation with the first pivot member 321.

[0229] The first pivot member 321 may be made of a rigid material. The first pivot member 321 is provided with a fourth pivot portion 3211.

[0230] It is understood that the names "first pivot," "second pivot," "third pivot," "fourth pivot," and "pivot" can be interchanged in some embodiments. For example, in one embodiment, the "first pivot" in other embodiments is referred to as the "second pivot," and correspondingly, the "second pivot" in other embodiments is referred to as the "first pivot."

[0231] The fourth pivot 3211 is an arc-shaped slider, so that the arc-shaped slider can slide within the connecting seat, such as the fourth pivot 235, for example, an arc-shaped groove. The slider slides within the arc-shaped groove along the extension direction of the arc-shaped groove and the extension direction of the slider, thereby realizing the rotational connection between the tray body 31 and the connecting seat.

[0232] In one embodiment, the fourth pivot portion 3211 may also be a cylindrical slider.

[0233] The second pivot member 322 is provided with a third guide portion 3221 for sliding connection with the second sliding portion 2241, such as the sub-push-pull portion 2243. In one embodiment, the third guide portion 3221 is an arc-shaped slide. This facilitates the sliding of the second sliding portion 2241, such as the sub-push-pull portion 2243, within the arc-shaped slide, so that when the electronic device 100 is folded, the tray body 31 makes way for the display module 200 to form a "teardrop" shaped folded state. At the same time, the tray body 31 can rotate around the sub-push-pull portion 2243.

[0234] It is understood that the names "first guide part", "second guide part", "third guide part" and "guide part" can be interchanged in some embodiments. For example, in one embodiment, the "first guide part" in other embodiments is called the "second guide part", and correspondingly, the "second guide part" in other embodiments is called the "first guide part".

[0235] In one embodiment, the first pivot member 321 and the second pivot member 322 are an integral structure.

[0236] In one embodiment, the first tray 30 and the second tray 40 may also be part of the pivot module 20.

[0237] Please see Figure 4 and Figure 26 , Figure 26 This application discloses Figure 4 The schematic diagram of the support plate 50 in the illustrated embodiment is shown. The support plate 50 may include a first sub-support plate 51 connecting two rotating shaft modules 20, such as the second rotating shaft module 20b and the third rotating shaft module 20c, and a second sub-support plate 52 connecting two rotating shaft modules 20, such as the second rotating shaft module 20b and the first rotating shaft module 20a.

[0238] Either the first sub-support plate 51 or the second support plate 52 may include a support plate body 511. The support plate body 511 may be disposed opposite to the pivot support frame 10. Specifically, it may be directly mounted on the pivot support frame 10, forming a mounting cavity 15 and a wiring cavity 16 with the pivot support frame 10.

[0239] In one embodiment, the support plate body 511 can be supported and fixed by the pivot support frame 10. In another embodiment, the support plate body 511 can be abutted by the first fixing base 25 and / or the second fixing base 221 to support the support plate body 511.

[0240] In one embodiment, the support plate body 511 may be provided with a positioning part at a position corresponding to the second sub-support 284, such as the positioning part 2845, so that the two positioning parts can be connected to realize the connection and engagement between the second sub-support 284 and the support plate body 511.

[0241] A clearance portion 513 may be provided on the support plate body 51 to allow space for the synchronizing arm, rotating arm 224, and connecting arm 227. When the electronic device 100 is folded, it will not be subject to spatial interference from the support plate body 51.

[0242] In one embodiment, the first sub-support plate 51 and the second support plate 52 may be an integral structure. In one embodiment, the support plate 50 may be part of the rotating shaft module 20. In one embodiment, the support plate 50 may be replaced by a first fixed base 25 and a second fixed base 221.

[0243] Please see Figure 27 , Figure 27 This application discloses Figure 4 The illustrated embodiment shows a schematic diagram of the folding mechanism 800. One end of the first sub-support member 51 can be fixed to the second fixed base body 2211 in the third rotating shaft module 20c between the two rotating arms 224, and the middle part can be fixed to the second mounting base 253 in the third rotating shaft module 20c. The other end can be fixed to the second fixed base body 2211 in the second rotating shaft module 20b, for example, on the side of the connecting arm 227 near the third rotating shaft module 20c. Similarly, one end of the first sub-support member 51 can be fixed to the second fixed base body 2211 in the second rotating shaft module 20b between the two rotating arms 224, and the middle part can be fixed to the second mounting base 253 in the first rotating shaft module 20a. The other end can be fixed to the second fixed base body 2211 in the first rotating shaft module 20a between the two rotating arms 224.

[0244] Please see Figure 28 and Figure 29 , Figure 28 This application discloses Figure 1 The diagram shown is a structural schematic of the folding mechanism 800 and the display module 200 after they are fully unfolded in the embodiment shown. Figure 29 This application discloses Figure 1 The illustrated embodiment shows a schematic diagram of the folding mechanism 800 and the display module 200 after they are fully folded. When the electronic device 100 is fully unfolded, the first support plate 30 and the second support plate 40 support the display module 200, making the display module 200 tend to be flat.

[0245] When the electronic device 100 folds, the first connecting seat 23 and the second connecting seat 24 are subjected to force, causing the electronic device 100 to fold towards the display module 200. Since the first rotating arm 26 and the first connecting seat 23 are slidably connected, and the second rotating arm 27 and the second connecting seat 24 are slidably connected, the first rotating arm 26 and the second rotating arm 27 fold towards the display module 200. Because the second pivot of the first connecting arm 228 and the second connecting arm 229 rotates with the first rotating arm 26 and the second rotating arm 27... The first axis of rotation is different, so when the first connecting seat 23 and the first rotating arm 26 rotate together, the first connecting seat 23 is restricted from rotating with the radius of the first connecting arm 228. In order to compensate for the difference in the axis of rotation, the first rotating arm 26 slides with the first connecting seat 23. During the sliding process, it pulls the first support plate 30, causing the first support plate 30 to rotate with the first connecting seat 23. As a result, the first support plate 30 drives the display module 200 to move away from the display module 200 on the side away from the first connecting seat 23. Simultaneously, when the second connecting seat 24 rotates together with the second rotating arm 27, it is restricted by the rotation of the second connecting seat 24 with the radius of the first connecting arm 229. To compensate for the difference in rotation axes, the second rotating arm 27 slides with the second connecting seat 24. During this sliding process, it pulls the second support plate 40, causing the second support plate 40 to rotate with the second connecting seat 24. This, in turn, causes the side of the second support plate 40 away from the first connecting seat 23 to move the display module 200 away from the display module 200. Under the movement of the first support plate 30 and the second support plate 40, the display module 200... Figure 28 As shown, a teardrop-shaped space is formed at the fold to prevent the display module 200 from forming fold marks. In addition, the space between the folded display module 200 and the portions of the first housing 400 and the second housing 600 can be made extremely small, and the folded electronic device 100 can even be made thinner.

[0246] Please see Figure 30 , Figure 30 This application discloses Figure 1The illustrated embodiment shows a simplified structural diagram of the rotating shaft module 20. The synchronous arms, such as the first synchronous arm 26 and the second synchronous arm 27, each have two parallel first rotating shafts A1 and A2 with different axes. The rotating arms 224, such as the first rotating arm 225 and the second rotating arm 226, each have two parallel second rotating shafts B1 and B2 with different axes. The connecting arms 227, such as the first connecting arm 228 and the second connecting arm 229, each have two parallel third rotating shafts C1 and C2 with different axes.

[0247] The plane containing the first rotation axis A1 and A2 is parallel to the plane containing the second rotation axis B1 and B2 and the plane containing the third rotation axis C1 and C2.

[0248] In addition, the first rotating shafts A1 and A2 are located between the second rotating shafts B1 and B2 and the third rotating shafts C1 and C2.

[0249] The synchronizing arm and rotating arm 224 are designed using a triangular stability design. This design provides damping force to keep the electronic device 100 flat when it is fully extended, preventing the electronic device 100 from extending at an excessive angle.

[0250] In addition, the relative sliding amount between the synchronous arm and the connecting seat can reduce the sliding amount between the rotating arm 224 and the connecting seat, thereby enabling the tray to rotate quickly, reducing the overall structural size of the rotating shaft module 20, and providing more space for the electronic device 100.

[0251] The connecting arm 227 and the rotating arm 224 are designed with triangular stability in mind. This allows the electronic device 100 to be fully flattened. It also provides damping force to keep the electronic device 100 flat and prevents it from unfolding at an excessive angle.

[0252] The projections of the third rotation axes C1 and C2 onto the plane containing the second rotation axes B1 and B2 lie between the second rotation axes B1 and B2. This allows the connecting arm 227 and the rotating arm 224 to adopt a triangular stability design when the electronic device 100 is folded. Furthermore, the intersection point of the synchronizing arm and the rotating arm 224 is farther from the second rotation axes B1 and B2 when the electronic device 100 is unfolded than when it is folded. Therefore, when unfolding the electronic device 100 from its fully folded state, the resistance of the synchronizing arm gradually increases, thus improving the service life of the electronic device 100.

[0253] When the electronic device 100 folds, the first connecting seat 23 and the second connecting seat 24 are subjected to force, causing the electronic device 100 to fold towards the display module 200. Since the first rotating arm 225 and the first connecting seat 23 are slidably connected, and the second rotating arm 226 and the second connecting seat 24 are slidably connected, the first rotating arm 225 and the second rotating arm 226 fold towards the display module 200. Because the third rotating axis of the first connecting arm 228 and the second connecting arm 229 rotates in conjunction with the first synchronous arm 26 and the second synchronous arm 27... The second axis of rotation is different, so when the first connecting seat 23 and the first rotating arm 225 rotate together, the first connecting seat 23 is restricted from rotating with the radius of the first connecting arm 228. In order to compensate for the difference in the axis of rotation, the first rotating arm 225 slides with the first connecting seat 23. During the sliding process, it pulls the first support plate 30, causing the first support plate 30 to rotate with the first connecting seat 23. As a result, the first support plate 30 drives the display module 200 to move away from the display module 200 on the side away from the first connecting seat 23. Simultaneously, when the second connecting seat 24 rotates together with the second rotating arm 226, it is restricted by the rotation of the second connecting seat 24 around the radius of the second connecting arm 229. To compensate for the difference in rotation axes, the second rotating arm 226 slides with the second connecting seat 24. During this sliding process, it pulls the second support plate 40, causing the second support plate 40 to rotate with the second connecting seat 24. This, in turn, causes the side of the second support plate 40 away from the first connecting seat 23 to move the display module 200 away from the display module 200. The movement of the first support plate 30 and the second support plate 40 causes the display module 200 to form a teardrop-shaped fold at the fold, preventing fold marks from forming on the display module 200. Furthermore, this minimizes the space between the folded display module 200 portion of the first housing 400 and the second housing 600, and even allows for a thinner folded electronic device 100.

[0254] During the folding process, the first synchronizing arm 26 is subjected to a force from the first rotating arm 225, causing the first synchronizing arm 26 to rotate. At the same time, the second synchronizing arm 27 also rotates, thus causing the first rotating arm 225 and the second rotating arm 226 to rotate synchronously. At this time, since the first rotation axis of the synchronizing arm is different from the second rotation axis of the rotating arm 224, the synchronizing arm and the rotating arm 224 will slide relative to each other, and the synchronizing arm will also rotate to a certain extent.

[0255] During the unfolding action, the first connecting seat 23 and the second connecting seat 24 are subjected to force, causing the electronic device 100 to unfold away from the display module 200.

[0256] Understandably, when the electronic device 100 performs a folding or unfolding action, the first rotating arm 225 is relatively stationary with the first connecting seat 23 and rotates around the second rotating axis together, and slides only with the first connecting seat 23 within the limit of the distance between the third rotating axis of the first connecting seat 23 and the first connecting arm 228. The second rotating arm 226 is relatively stationary with the second connecting seat 24 and rotates with the second rotating axis, and slides only with the second connecting seat 24 within the limit of the distance between the second rotating axis of the second connecting seat 24 and the second connecting arm 229.

[0257] The following describes an electronic device; please refer to [link / reference]. Figure 31 This is a schematic diagram illustrating the structural composition of an embodiment of the electronic device 900 in this application. The electronic device 900 can be a mobile phone, tablet computer, laptop computer, or wearable device, etc. This embodiment uses a mobile phone as an example. The structure of the electronic device 900 may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940 (i.e., the display module 200 in the above embodiment), a sensor 950, an audio circuit 960, a Wi-Fi module 970, a processor 980, and a power supply 990, etc. The RF circuit 910, memory 920, input unit 930, display unit 940, sensor 950, audio circuit 960, and Wi-Fi module 970 are all connected to the processor 980. The power supply 990 provides power to the entire electronic device 900.

[0258] Specifically, the RF circuit 910 is used to transmit and receive signals. The memory 920 is used to store data and instruction information. The input unit 930 is used to input information, and 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 infrared sensors, laser sensors, etc., used to detect user proximity signals, distance signals, etc. The speaker 961 and the microphone (or receiver assembly) 962 are connected to the processor 980 through the audio circuit 960 for transmitting and receiving sound signals. The Wi-Fi module 970 is used to receive and transmit Wi-Fi signals. The processor 980 is used to process data information of the electronic device.

[0259] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A rotating shaft module, characterized in that, The utility model relates to a rotary arm, comprising: a base; first and second rotary arms rotatably connected to the base on different and parallel first rotary axes; first and second connecting arms rotatably connected to the base on different and parallel second rotary axes, the first and second rotary axes being parallel to each other; and first and second connecting seats, the first connecting seat being rotatably connected to one end of the first connecting arm away from the base, the first connecting seat being slidably connected to the first rotary arm and sliding relative to each other in a direction perpendicular to the first rotary axis, the second connecting seat being rotatably connected to one end of the second connecting arm away from the base, the second connecting seat being slidably connected to the second rotary arm and sliding relative to each other in a direction perpendicular to the first rotary axis, the first rotary arm being configured to be relatively stationary with the first connecting seat and rotate around the base, and to slide with the first connecting seat only within a distance defined between the first connecting seat and the second rotary axis of the first connecting arm while extending and contracting in the sliding direction to adjust the length of the first rotary arm, the second rotary arm being configured to be relatively stationary with the second connecting seat and rotate around the base, and to slide with the second connecting seat only within a distance defined between the second connecting seat and the second rotary axis of the second connecting arm while extending and contracting in the sliding direction to adjust the length of the second rotary arm.

2. The rotation shaft module according to claim 1, characterized in that, The first rotary arm comprises: a first telescopic section rotatably connected to the base at one end; and a second telescopic section slidably connected to the first connecting seat, the first telescopic section being configured to slide relative to the second telescopic section to adjust the length of the first rotary arm in the sliding direction and to slide to a position where the first telescopic section is locked with the second telescopic section to be relatively stationary with the second telescopic section, the second telescopic section being configured to slide relative to the first connecting seat and to slide to a position where the second telescopic section is locked with the first connecting seat to be relatively stationary with the first connecting seat.

3. The rotation shaft module according to claim 2, characterized in that, The first telescopic section is provided with a limiting section, and the second telescopic section is provided with a clearance slide rail, the limiting section of the first telescopic section being configured to slide on the clearance slide rail of the second telescopic section and to slide to a position where the first telescopic section is locked with the second telescopic section to be relatively stationary with the second telescopic section.

4. The rotation shaft module according to claim 2, characterized in that, The second telescopic section is provided with a limiting section, and the first connecting seat is provided with a clearance slide rail, the limiting section of the second telescopic section being configured to slide on the clearance slide rail of the first connecting seat and to slide to a position where the second telescopic section is locked with the first connecting seat to be relatively stationary with the first connecting seat.

5. The rotation shaft module according to claim 1, characterized in that, The first rotary arm comprises: a first telescopic section rotatably connected to the base at one end; a second telescopic section slidably connected to the first connecting seat, the second telescopic section being configured to slide relative to the first connecting seat to adjust the length of the first rotary arm in the sliding direction; The first and second elastic members are both tension springs, one end of the first elastic member is arranged on the first telescopic part, the other end is arranged on the second telescopic part, so as to adjust the relative position of the first telescopic part and the second telescopic part in the sliding direction, one end of the second elastic member is arranged on the second telescopic part, the other end is arranged on the first connecting seat, so as to adjust the relative position of the second telescopic part and the first connecting seat in the sliding direction.

6. The rotation shaft module according to claim 5, characterized in that, The shaft module further comprises:

7. The rotation module according to any one of claims 1-6, wherein, The first and second synchronous arms are respectively rotatably connected with the base on two different and parallel third rotating shafts, the third rotating shafts are arranged in parallel with the second rotating shafts, the first connecting seat is rotatably connected with one end of the first synchronous arm away from the base, and slides relative to the first synchronous arm in a direction perpendicular to the third rotating shaft, the second connecting seat is rotatably connected with one end of the second synchronous arm away from the base, and slides relative to the second synchronous arm in a direction perpendicular to the third rotating shaft. The first and second synchronous arms are configured to have the same angular velocity when rotating around the base, and the first synchronous arm rotates forward around the base, and the second synchronous arm rotates reversely around the base.

8. The rotation module according to claim 7, characterized in that, The two first rotating shafts are located between the two second rotating shafts and the two third rotating shafts.

9. The rotation module of claim 7, wherein, The shaft module further comprises:

10. The rotation shaft module according to claim 7, characterized in that, The first and second supporting plates are arranged oppositely, and are arranged on the same side of the first and second rotating arms, the first and second connecting arms, and the first and second synchronous arms, the first supporting plate is rotatably connected with the first connecting seat, the first supporting plate is rotatably connected with the first rotating arm, and the first supporting plate is configured to slide relative to the first rotating arm when the first connecting seat slides relative to the first rotating arm, and simultaneously rotate relative to the first connecting seat, the second supporting plate is rotatably connected with the second connecting seat, the second supporting plate is rotatably connected with the second rotating arm, and the second supporting plate is configured to slide relative to the second rotating arm when the second connecting seat slides relative to the second rotating arm, and simultaneously rotate relative to the second connecting seat. Each of the first and second supporting plates comprises:

11. The rotation shaft module according to claim 10, characterized in that, A supporting plate body; and A pivot connecting piece arranged on one side of the supporting plate body, the pivot connecting piece of the first supporting plate is rotatably connected with the first connecting seat and the first rotating arm respectively, and the pivot connecting piece of the second supporting plate is rotatably connected with the second connecting seat and the second rotating arm respectively. The pivot connecting piece comprises:

12. The rotation module according to claim 11, characterized in that, ​ First and second pivot members are disposed on the pallet body. The first pivot member of the first pallet is rotatably connected to the first connecting seat, the second pivot member of the first pallet is rotatably connected to the first rotating arm, the first pivot member of the second pallet is rotatably connected to the second connecting seat, and the second pivot member of the second pallet is rotatably connected to the second rotating arm.

13. The rotation module according to claim 12, characterized in that, One of the first pivot member and the first connecting seat is provided with an arc-shaped groove, and the other is provided with a slider, wherein the slider is configured to slide within the arc-shaped groove along the extension direction of the arc-shaped groove and the extension direction of the slider.

14. The rotation module of claim 12, wherein, The second pivot member is provided with a first guide portion. The first rotating arm is slidably connected to the first guide portion of the first tray and can slide in the extending direction of the first guide portion of the first tray. The second rotating arm is slidably connected to the first guide portion of the second tray and can slide in the extending direction of the first guide portion of the second tray.

15. The rotation module according to claim 14, characterized in that, The first guide section is an arc-shaped slide.

16. The rotation module according to claim 15, characterized in that, Each of the first and second rotating arms is provided with a sub-push-pull portion, which is placed within the arc-shaped slide rail. The sub-push-pull portion of the first rotating arm is configured to slide along the extension direction of the arc-shaped slide rail of the first pallet when the first connecting seat slides relative to the first rotating arm, and simultaneously cause the first pallet to rotate around the sub-push-pull portion of the first rotating arm. The sub-push-pull portion of the second rotating arm is configured to slide along the extension direction of the arc-shaped slide rail of the second pallet when the second connecting seat slides relative to the second rotating arm, and simultaneously cause the second pallet to rotate around the sub-push-pull portion of the second rotating arm.

17. The rotation module of claim 7, wherein, The base includes: The first and second fixed bases are arranged side by side in the extending direction of the first rotation axis; Wherein, the first and second synchronous arms and the first and second connecting arms are rotatably connected to the first fixed base, and each of the first and second rotating arms is rotatably connected to the second fixed base; Alternatively, the first and second synchronous arms and the first and second rotating arms are rotatably connected to the first fixed base, and each of the first and second connecting arms is rotatably connected to the second fixed base; Alternatively, the first and second rotating arms and the first and second connecting arms are rotatably connected to the first fixed base, and each of the first and second synchronous arms is rotatably connected to the second fixed base.

18. The rotation module according to claim 17, characterized in that, The first fixed base includes: The first and second mounting bases are arranged opposite to each other, and each of the first and second synchronous arms is rotatably connected to the first and second mounting bases.

19. The rotation module according to claim 18, wherein, The first fixed base also includes: A snap-fit ​​connector is disposed on the side of the first mounting base away from the second mounting base. The snap-fit ​​connector engages with the first mounting base and the first and second synchronization arms respectively, so as to mount the first and second synchronization arms on the first mounting base.

20. The rotation module according to claim 18 or 19, characterized in that, The rotating shaft module also includes a synchronous transmission component, which is used to ensure that the first and second synchronous arms have the same angular velocity when they rotate around the first fixed base.

21. The rotation module of claim 20, wherein, The synchronous transmission assembly includes: A support base is rotatably connected with the first and second synchronous arms, respectively. A gear set is installed on the support base and connected with each of the first and second synchronous arms for transmission between the first and second synchronous arms.

22. The rotation module of claim 18, wherein, The rotation shaft module further comprises a damping assembly, which comprises: A limiting member is abutted with the first and second synchronous arms, respectively, and is slidably connected with each of the first and second synchronous arms and can slide relative to each other in the extension direction of the third rotation shaft; and An elastic member is used to control the extrusion force of the limiting member on each of the first and second synchronous arms to control the static friction force between the limiting member and each of the first and second synchronous arms.

23. The rotation module of claim 22, wherein, Each of the first and second synchronous arms is distributed with a plurality of first limiting protrusions around the rotation shaft rotating around the first fixed base, the limiting member is provided with a plurality of second limiting protrusions matched with the plurality of first limiting protrusions, and the plurality of first limiting protrusions and the plurality of second limiting protrusions are configured to abut and slide relative to each other when the first and second synchronous arms rotate around the first fixed base, so that the limiting member moves away from or approaches the first and second synchronous arms.

24. The rotation module of claim 7, wherein, The rotation shaft module further comprises: A rotation shaft support frame, and the base is installed on the rotation shaft support frame; and A support plate forms a containing cavity with the rotation shaft support frame, and the base is located in the containing cavity, the end of each of the first and second connecting arms located in the containing cavity is rotatably connected with the base, the end of each of the first and second synchronous arms located in the containing cavity is rotatably connected with the base, and the end of each of the first and second rotating arms located in the containing cavity is rotatably connected with the base.

25. A housing assembly characterized by, It comprises: A base; First and second rotating arms are rotatably connected with the base on two different and parallel first rotating shafts, respectively; First and second connecting arms are rotatably connected with the base on two different and parallel second rotating shafts, respectively, and the first rotating shafts are arranged in parallel with the second rotating shafts; And The first and second housings, the first housing is rotatably connected with the first connecting arm away from one end of the base, the first housing is slidably connected with the first rotating arm and slides relative to each other in a direction perpendicular to the first rotating shaft, the second housing is rotatably connected with the second connecting arm away from one end of the base, the second housing is slidably connected with the second rotating arm and slides relative to each other in a direction perpendicular to the first rotating shaft, the first rotating arm is configured to be relatively stationary with the first housing and rotate around the base together, and only slide with the first housing under the limitation of the distance between the first housing and the second rotating shaft of the first connecting arm, while stretching and contracting in the sliding direction to adjust the length of the first rotating arm, the second rotating arm is configured to be relatively stationary with the second housing and rotate around the base together, and only slide with the second housing under the limitation of the distance between the second housing and the second rotating shaft of the second connecting arm, while stretching and contracting in the sliding direction to adjust the length of the second rotating arm.

26. An electronic device, comprising: It comprises: A rotation shaft support frame; A support plate forms a receiving cavity with the rotation shaft support frame; At least one rotation shaft module is arranged in the extension direction of the rotation shaft support frame, each of the at least one rotation shaft module comprising: First and second fixed bases arranged side by side in the extension direction of the rotation shaft support frame and located in the receiving cavity; First and second rotating arms rotatably connected to the first fixed base on different and parallel first rotating shafts; First and second connecting arms rotatably connected to the first fixed base on different and parallel second rotating shafts; First and second synchronous arms rotatably connected to the second fixed base on different and parallel third rotating shafts, the first and second synchronous arms configured to have the same angular velocity when rotating around the second fixed base, one of the first and second synchronous arms rotating in a first direction and the other rotating in a second direction, the first and second directions configured to be opposite, the first rotating shafts and the second rotating shafts arranged in parallel, and the second rotating shafts and the third rotating shafts arranged in parallel; First and second connecting seats, the first connecting seat rotatably connected to one end of the first connecting arm away from the first fixed base, the first connecting seat slidably connected to the first rotating arm and sliding relative to the first rotating arm in a direction perpendicular to the first rotating shafts, the second connecting seat rotatably connected to one end of the second connecting arm away from the first fixed base, the second connecting seat slidably connected to the second rotating arm and sliding relative to the second rotating arm in a direction perpendicular to the first rotating shafts, the first rotating arm configured to be relatively stationary with the first connecting seat and rotate around the first fixed base, and only slide with the first connecting seat within the distance between the first connecting seat and the second rotating shaft of the first connecting arm, while extending and contracting in the sliding direction to adjust the length of the first rotating arm, the second rotating arm configured to be relatively stationary with the second connecting seat and rotate around the first fixed base, and only slide with the second connecting seat within the distance between the second connecting seat and the second rotating shaft of the second connecting arm, while extending and contracting in the sliding direction to adjust the length of the second rotating arm, the first connecting seat rotatably connected to one end of the first synchronous arm away from the second fixed base and slidably connected to the first synchronous arm in a direction perpendicular to the third rotating shafts, and the second connecting seat rotatably connected to one end of the second synchronous arm away from the second fixed base and slidably connected to the second synchronous arm in a direction perpendicular to the third rotating shafts; and First and second connecting seats, the first connecting seat rotatably connected to one end of the first connecting arm away from the first fixed base, the first connecting seat slidably connected to the first rotating arm and sliding relative to the first rotating arm in a direction perpendicular to the first rotating shafts, the second connecting seat rotatably connected to one end of the second connecting arm away from the first fixed base, the second connecting seat slidably connected to the second rotating arm and sliding relative to the second rotating arm in a direction perpendicular to the first rotating shafts, the first rotating arm configured to be relatively stationary with the first connecting seat and rotate around the first fixed base, and only slide with the first connecting seat within the distance between the first connecting seat and the second rotating shaft of the first connecting arm, while extending and contracting in the sliding direction to adjust the length of the first rotating arm, the second rotating arm configured to be relatively stationary with the second connecting seat and rotate around the first fixed base, and only slide with the second connecting seat within the distance between the second connecting seat and the second rotating shaft of the second connecting arm, while extending and contracting in the sliding direction to adjust the length of the second rotating arm, the first connecting seat rotatably connected to one end of the first synchronous arm away from the second fixed base and slidably connected to the first synchronous arm in a direction perpendicular to the third rotating shafts, and the second connecting seat rotatably connected to one end of the second synchronous arm away from the second fixed base and slidably connected to the second synchronous arm in a direction perpendicular to the third rotating shafts; and The first and second supporting plates are oppositely arranged and are arranged on the same side of the first and second rotating arms and the first and second connecting arms and the first and second synchronous arms, the first supporting plate is rotationally connected with the first connecting seat and the first rotating arm, the first supporting plate is configured to slide relative to the first rotating arm when the first connecting seat and the first rotating arm slide relative to each other and simultaneously rotate relative to the first connecting seat, the second supporting plate is rotationally connected with the second connecting seat and the second rotating arm, the second supporting plate is configured to slide relative to the second rotating arm when the second connecting seat and the second rotating arm slide relative to each other and simultaneously rotate relative to the second connecting seat, and the supporting plate is arranged between the first and second supporting plates after the rotating shaft module is completely unfolded. The first and second housings are oppositely arranged, one end of the first housing is fixedly connected with the first connecting seat, and one end of the second housing is fixedly connected with the second connecting seat. The flexible display screen is arranged on the first and second housings, the first and second supporting plates, and the supporting plate, the first and second supporting plates are configured to rotate relative to the first and second connecting seats when the first and second housings are folded, the first supporting plate is configured to rotate relative to the first connecting seat, the second supporting plate is configured to rotate relative to the second connecting seat, and the flexible display screen is arranged to avoid damage to the flexible display screen caused by folding when the first and second supporting plates are folded relative to the first and second housings.

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