Foldable electronic device, hinge assembly, and housing device

Abstract

The present application discloses a foldable electronic device, a hinge assembly, and a housing device. The electronic device provided in the present application includes a first housing, a second housing, and a hinge assembly connected between the first housing and the second housing, and the first housing and the second housing can be relatively unfolded or folded by the hinge assembly. The hinge assembly includes a first support member, a first connecting member, a second support member, and a second connecting member, and the first support member and the second support member are used to support the screen. The hinge assembly drives the first support member and the second support member to move through the first connecting member and the second connecting member, and can accurately control the movement trajectory of the first support member and the second support member, so as to avoid the bending part of the flexible display screen when the electronic device is folded, thereby improving the reliability and service life of the flexible display screen and the electronic device.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and in particular to a foldable electronic device, a hinge assembly, and a housing device. Background Art

[0002] Flexible displays are soft and easily bendable. Existing foldable electronic devices use support members to provide a relatively flat support environment for the flexible display, preventing it from bending and ensuring its display quality. However, existing electronic devices have low control precision over the movement of the support members, resulting in unstable movement. Furthermore, when the electronic device is folded, the support members have difficulty effectively avoiding the curved portion of the flexible display, which causes compression. This results in poor reliability of the flexible display and a short service life for the electronic device. Excessive compression and damage by the housing assembly also results in poor reliability of the flexible display and a short service life for the electronic device. Summary of the Invention

[0003] The present application provides a foldable electronic device, a hinge assembly, and a housing device. The electronic device provided in the present application includes a first housing, a second housing, and a hinge assembly connected between the first housing and the second housing, and the first housing and the second housing can be relatively unfolded or folded by the hinge assembly. The hinge assembly includes a first support member, a first connecting member, a second support member, and a second connecting member, and the first support member and the second support member are used to support the screen. The hinge assembly drives the first support member and the second support member to move through the first connecting member and the second connecting member, and can accurately control the movement trajectory of the first support member and the second support member, so as to avoid the bending part of the flexible display screen when the electronic device is folded, thereby improving the reliability and service life of the flexible display screen and the electronic device.

[0004] In a first aspect, the present application provides a foldable electronic device having an open state and a closed state. The electronic device includes a housing device and a screen, wherein the screen is mounted on the housing device.

[0005] The housing device includes a first housing, a second housing and a rotating shaft assembly. The rotating shaft assembly is connected between the first housing and the second housing. The first housing and the second housing can be relatively unfolded or folded through the rotating shaft assembly.

[0006] The shaft assembly includes a main shaft, a first fixing bracket, a second fixing bracket, a first connecting arm, and a second connecting arm. The first fixing bracket is fixedly connected to the first housing, and the second fixing bracket is fixedly connected to the second housing. The first connecting arm includes a first end and a second end. The first end of the first connecting arm is rotatably connected to the main shaft, and the second end of the first connecting arm is rotatably connected to the first fixing bracket. The second connecting arm includes a first end and a second end. The first end of the second connecting arm is rotatably connected to the main shaft, and the second end of the second connecting arm is rotatably connected to the first fixing bracket.

[0007] The hinge assembly also includes a first support member, a first connector, a second support member, and a second connector. The first support member is rotatably connected to the first fixing frame, with its ends rotatably connected to the first support member and the first connecting arm, respectively. The second support member is rotatably connected to the second fixing frame, with its ends rotatably connected to the second support member and the second connecting arm, respectively. The first housing, first support member, main shaft, second support member, and second housing collectively support the screen.

[0008] In the present application, the first connecting member is capable of moving to rotate the first support member relative to the first connecting arm, and the four mechanisms of the first support member, the first fixed frame, the first connecting arm, and the first connecting member are respectively rotatably connected to adjacent mechanisms, forming a four-bar linkage structure, so that the first fixed frame, the first connecting arm, and the first connecting member jointly define the movement of the first support member, thereby enabling the precise control of the movement trajectory of the first support member. The second connecting member is capable of moving to rotate the second support member relative to the second connecting arm, and the four mechanisms of the second support member, the second fixed frame, the second connecting arm, and the second connecting member are respectively rotatably connected to adjacent mechanisms, forming a four-bar linkage structure, so that the second fixed frame, the second connecting arm, and the second connecting member jointly define the movement of the second support member, thereby enabling the precise control of the movement trajectory of the second support member. Therefore, the hinge assembly drives the first and second supports to move via the first and second connecting members, and can precisely control the movement trajectories of the first and second supports, thereby avoiding the bending portion of the flexible display when the electronic device is folded, thereby improving the reliability and service life of the flexible display and the electronic device.

[0009] In some possible implementations, the shaft assembly further includes a first swing arm and a second swing arm. The first swing arm includes a rotating end and a sliding end, wherein the rotating end of the first swing arm is rotatably connected to the main shaft, and the sliding end of the first swing arm is slidably connected to the first fixed frame; the second swing arm includes a rotating end and a sliding end, wherein the rotating end of the second swing arm is rotatably connected to the main shaft, and the sliding end of the second swing arm is slidably connected to the second fixed frame.

[0010] In this implementation, the rotating end of the first swing arm is rotatably connected to the main shaft, and the sliding end is slidably connected to the first fixed frame, forming a connecting rod slider structure; the rotating end of the second swing arm is rotatably connected to the main shaft, and the sliding end is slidably connected to the second fixed frame, forming a connecting rod slider structure. Therefore, the rotating shaft assembly realizes the connection between the fixed frame and the second fixed frame and the main shaft through the connecting rod slider structure. The number of its components is small, the matching relationship and matching position are simple, the components are easy to manufacture and assemble, and it is conducive to mass production.

[0011] In some possible implementations, the rotation center of the relative rotation between the first connecting member and the first support member is the first rotation center, the rotation center of the relative rotation between the first connecting member and the first connecting arm is the second rotation center, and the first rotation center and the second rotation center are staggered.

[0012] In this implementation, the first rotation center and the second rotation center are staggered to enable relative rotation and movement between the first connecting arm and the first support member, thereby forming a four-bar linkage structure formed by the first support member, the first fixed frame, the first connecting arm, and the first connecting member, and accurately controlling the motion trajectory of the first support member through the cooperation of the four-bar linkage. In addition, the first connecting arm and the first connecting member rotate relative to each other around the first rotation center, and the first support member and the first connecting member rotate relative to each other around the second rotation center. This application can adjust the motion trajectory of the first support member by designing the relative positions of the first rotation center and the second rotation center of the first connecting member to change the shape of the screen space.

[0013] In some possible implementations, the first connecting arm is provided with a first arc-shaped arm, the first supporting member is provided with a second arc-shaped arm, the two ends of the first connecting member are respectively provided with a first arc-shaped groove and a second arc-shaped groove, the center line of the first arc-shaped groove is parallel to the center line of the second arc-shaped groove and is arranged at intervals, the first arc-shaped arm is rotatably connected to the first arc-shaped groove, and the second arc-shaped arm is rotatably connected to the second arc-shaped groove.

[0014] In this implementation, the center line of the first arc groove is parallel to the center line of the second arc groove and is spaced apart. The center line of the first arc groove and the center line of the second arc groove may not be on the same straight line, so that the first rotation center and the second rotation center are staggered.

[0015] Furthermore, during the unfolding and folding of the hinge assembly, the first connecting member can rotate relative to the first arcuate arm of the first connecting arm through the first arcuate slot, thereby rotating relative to the first connecting arm. The second connecting member can rotate relative to the first arcuate arm of the second connecting arm through the first arcuate slot, thereby rotating relative to the second connecting arm.

[0016] In some possible implementations, the first support member further includes a first support plate, the connecting end of the second arc-shaped arm is connected to the first support plate, and the rotating end of the second arc-shaped arm is rotatably connected to the second arc-shaped groove.

[0017] In this implementation, the rotating end of the second arc-shaped arm is suspended and extends away from the main axis, so that during the folding process of the hinge assembly, the rotating end of the second arc-shaped arm extends into the second arc-shaped groove to increase the connection stability between the first connecting member and the first support member.

[0018] In some possible implementations, there are two first connecting members, and the two first connecting members are arranged opposite to each other.

[0019] In this implementation, the first connecting arm may be connected to the first supporting member via two first connecting members to increase the connection strength with the first supporting member.

[0020] In some possible implementations, the first fixing bracket is provided with a third arc-shaped groove, and the first supporting member is further provided with a third arc-shaped arm, and the third arc-shaped arm is installed in the third arc-shaped groove.

[0021] In this implementation, the third arc-shaped arm of the first support member is installed in the third arc-shaped groove of the first fixing frame, so that the first support member is rotatably connected to the first fixing frame through a virtual axis connection.

[0022] In some possible implementations, the sliding end of the first swing arm is slidably connected to the first support member.

[0023] In this implementation, the sliding end of the first swing arm is slidably connected to the first support member, so that the first support member can slide relative to the first swing arm.

[0024] In some possible implementations, the first support member further includes a first guide arm, the first guide arm is provided with a first guide slot, and the shaft assembly further includes a bottom shaft, the bottom shaft is connected to the sliding end of the first swing arm and is installed in the first guide slot.

[0025] In this implementation, the sliding end of the first swing arm can slide along the extension direction of the first guide slot, so that the movement trajectory of the first support member can be controlled by the first guide slot when the first support member slides relative to the first swing arm.

[0026] In some possible implementations, the first support member has a first end away from the main axis and a second end close to the main axis, and the second support member has a first end away from the main axis and a second end close to the main axis;

[0027] When the electronic device is in an open state, the first support member and the second support member are respectively located on both sides of the main axis, and the first support member and the second support member are flush;

[0028] When the electronic device is in a closed state, the first support member and the second support member are folded relative to the main axis, and the distance between the first end of the first support member and the first end of the second support member is smaller than the distance between the second end of the first support member and the second end of the second support member.

[0029] In this implementation, the first and second support members, the main shaft, and other components of the hinge assembly together form a teardrop-shaped screen-accommodating space. This teardrop-shaped space conforms to the curved shape of the screen, preventing damage to the screen from being squeezed by the hinge assembly. This ensures greater reliability and a longer lifespan for the screen and electronic device.

[0030] In a second aspect, the present application also provides a hinge assembly for use in foldable electronic devices. The hinge assembly includes a main shaft, a first fixing frame, a second fixing frame, a first connecting arm, and a second connecting arm; the first fixing frame is fixedly connected to the first housing, and the second fixing frame is fixedly connected to the second housing. The first connecting arm includes a first end and a second end, the first end of the first connecting arm being rotatably connected to the main shaft, and the second end of the first connecting arm being rotatably connected to the first fixing frame. The second connecting arm includes a first end and a second end, the first end of the second connecting arm being rotatably connected to the main shaft, and the second end of the second connecting arm being rotatably connected to the first fixing frame.

[0031] The hinge assembly also includes a first support member, a first connector, a second support member, and a second connector. The first support member is rotatably connected to the first fixing frame, with its ends rotatably connected to the first support member and the first connecting arm, respectively. The second support member is rotatably connected to the second fixing frame, with its ends rotatably connected to the second support member and the second connecting arm, respectively. The first housing, first support member, main shaft, second support member, and second housing collectively support the screen.

[0032] In the present application, the first connecting member is capable of moving to rotate the first support member relative to the first connecting arm, and the four mechanisms of the first support member, the first fixed frame, the first connecting arm, and the first connecting member are respectively rotatably connected to adjacent mechanisms, forming a four-bar linkage structure, so that the first fixed frame, the first connecting arm, and the first connecting member jointly define the movement of the first support member, thereby enabling the precise control of the movement trajectory of the first support member. The second connecting member is capable of moving to rotate the second support member relative to the second connecting arm, and the four mechanisms of the second support member, the second fixed frame, the second connecting arm, and the second connecting member are respectively rotatably connected to adjacent mechanisms, forming a four-bar linkage structure, so that the second fixed frame, the second connecting arm, and the second connecting member jointly define the movement of the second support member, thereby enabling the precise control of the movement trajectory of the second support member. Therefore, the hinge assembly drives the first and second supports to move via the first and second connecting members, and can precisely control the movement trajectories of the first and second supports, thereby avoiding the bending portion of the flexible display when the electronic device is folded, thereby improving the reliability and service life of the flexible display and the electronic device.

[0033] In some possible implementations, the shaft assembly further includes a first swing arm and a second swing arm. The first swing arm includes a rotating end and a sliding end, wherein the rotating end of the first swing arm is rotatably connected to the main shaft, and the sliding end of the first swing arm is slidably connected to the first fixed frame; the second swing arm includes a rotating end and a sliding end, wherein the rotating end of the second swing arm is rotatably connected to the main shaft, and the sliding end of the second swing arm is slidably connected to the second fixed frame.

[0034] In this implementation, the rotating end of the first swing arm is rotatably connected to the main shaft, and the sliding end is slidably connected to the first fixed frame, forming a connecting rod slider structure; the rotating end of the second swing arm is rotatably connected to the main shaft, and the sliding end is slidably connected to the second fixed frame, forming a connecting rod slider structure. Therefore, the rotating shaft assembly realizes the connection between the fixed frame and the second fixed frame and the main shaft through the connecting rod slider structure. The number of its components is small, the matching relationship and matching position are simple, the components are easy to manufacture and assemble, and it is conducive to mass production.

[0035] In some possible implementations, the rotation center of the relative rotation between the first connecting member and the first support member is the first rotation center, the rotation center of the relative rotation between the first connecting member and the first connecting arm is the second rotation center, and the first rotation center and the second rotation center are staggered.

[0036] In this implementation, the first rotation center and the second rotation center are staggered to enable relative rotation and movement between the first connecting arm and the first support member, thereby forming a four-bar linkage structure formed by the first support member, the first fixed frame, the first connecting arm, and the first connecting member, and accurately controlling the motion trajectory of the first support member through the cooperation of the four-bar linkage. In addition, the first connecting arm and the first connecting member rotate relative to each other around the first rotation center, and the first support member and the first connecting member rotate relative to each other around the second rotation center. This application can adjust the motion trajectory of the first support member by designing the relative positions of the first rotation center and the second rotation center of the first connecting member to change the shape of the screen space.

[0037] In some possible implementations, the first connecting arm is provided with a first arc-shaped arm, the first supporting member is provided with a second arc-shaped arm, the two ends of the first connecting member are respectively provided with a first arc-shaped groove and a second arc-shaped groove, the center line of the first arc-shaped groove is parallel to the center line of the second arc-shaped groove and is arranged at intervals, the first arc-shaped arm is rotatably connected to the first arc-shaped groove, and the second arc-shaped arm is rotatably connected to the second arc-shaped groove.

[0038] In this implementation, the center line of the first arc-shaped slot is parallel to the center line of the second arc-shaped slot and is spaced apart from each other, so that the first rotation center and the second rotation center are staggered.

[0039] Furthermore, during the unfolding and folding of the hinge assembly, the first connecting member can rotate relative to the first arcuate arm of the first connecting arm through the first arcuate slot, thereby rotating relative to the first connecting arm. The second connecting member can rotate relative to the first arcuate arm of the second connecting arm through the first arcuate slot, thereby rotating relative to the second connecting arm.

[0040] In some possible implementations, the first support member further includes a first support plate, the connecting end of the second arc-shaped arm is connected to the first support plate, and the rotating end of the second arc-shaped arm is rotatably connected to the second arc-shaped groove.

[0041] In this implementation, the rotating end of the second arc-shaped arm is suspended and extends away from the main axis, so that during the folding process of the hinge assembly, the rotating end of the second arc-shaped arm extends into the second arc-shaped groove to increase the connection stability between the first connecting member and the first support member.

[0042] In some possible implementations, there are two first connecting members, and the two first connecting members are arranged opposite to each other.

[0043] In this implementation, the first connecting arm may be connected to the first supporting member via two first connecting members to increase the connection strength with the first supporting member.

[0044] In some possible implementations, the first fixing bracket is provided with a third arc-shaped groove, and the first supporting member is further provided with a third arc-shaped arm, and the third arc-shaped arm is installed in the third arc-shaped groove.

[0045] In this implementation, the third arc-shaped arm of the first support member is installed in the third arc-shaped groove of the first fixing frame, so that the first support member is rotatably connected to the first fixing frame through a virtual axis connection.

[0046] In some possible implementations, the sliding end of the first swing arm is slidably connected to the first support member.

[0047] In this implementation, the sliding end of the first swing arm is slidably connected to the first support member, so that the first support member can slide relative to the first swing arm.

[0048] In some possible implementations, the first support member further includes a first guide arm, the first guide arm is provided with a first guide slot, and the shaft assembly further includes a bottom shaft, the bottom shaft is connected to the sliding end of the first swing arm and is installed in the first guide slot.

[0049] In this implementation, the sliding end of the first swing arm can slide along the extension direction of the first guide slot, so that the movement trajectory of the first support member can be controlled by the first guide slot when the first support member slides relative to the first swing arm.

[0050] In a third aspect, the present application further provides a housing device comprising a first housing, a second housing, and a hinge assembly. A first fixing bracket of the hinge assembly is fixedly connected to the first housing, and a second fixing bracket is fixedly connected to the second housing; the first housing and the second housing can be relatively unfolded or folded by the hinge assembly.

[0051] In this application, the housing device can be applied to a foldable electronic device. The screen of the electronic device moves with the first housing, the hinge assembly, and the second housing. The hinge assembly includes a first support member, a first connector, a second support member, and a second connector. The hinge assembly drives the first and second supports via the first and second connectors, precisely controlling the movement trajectories of the first and second supports. This automatically avoids the curved portion of the screen when the electronic device is folded, thereby improving the reliability and service life of the screen and the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a schematic structural diagram of an electronic device provided by an embodiment of the present application when it is in an open state;

[0053] Figure 2 yes Figure 1 A schematic diagram of the structure of the electronic device shown in the closed state;

[0054] Figure 3 yes Figure 1 A schematic diagram of a partially exploded structure of the electronic device shown;

[0055] Figure 4 yes Figure 3 A schematic structural diagram of the rotating shaft assembly shown in an open state;

[0056] Figure 5 yes Figure 4 A schematic structural diagram of the rotating shaft assembly shown in a closed state;

[0057] Figure 6 yes Figure 4 A schematic diagram of a partially exploded structure of the shaft assembly shown;

[0058] Figure 7A yes Figure 6 Schematic diagram of the exploded structure of the main shaft shown;

[0059] Figure 7B yes Figure 7A A schematic diagram of the structure of the main shaft at another angle;

[0060] Figure 8 yes Figure 6 A schematic structural diagram of the multiple connection components shown;

[0061] Figure 9 yes Figure 8 A schematic diagram of a partially exploded structure of the plurality of connected components shown;

[0062] Figure 10A yes Figure 9 The schematic structural diagram of the first fixing frame shown is at another angle;

[0063] Figure 10B yes Figure 10A The schematic structural diagram of the first fixing frame shown is at another angle;

[0064] Figure 11A yes Figure 9 The schematic diagram of the structure of the second fixing frame shown is at another angle;

[0065] Figure 11B yes Figure 11A The schematic structural diagram of the first fixing frame shown is at another angle;

[0066] Figure 12 yes Figure 9 A schematic structural diagram of the first connecting arm at another angle is shown;

[0067] Figure 13 yes Figure 9 A schematic structural diagram of the second connecting arm at another angle is shown;

[0068] Figure 14 yes Figure 9 A schematic structural diagram of the first swing arm at another angle is shown;

[0069] Figure 15 yes Figure 9 The schematic diagram of the structure of the second swing arm at another angle is shown;

[0070] Figure 16 yes Figure 9 The schematic structural diagram of the first damping assembly shown is from another angle;

[0071] Figure 17 yes Figure 16 The structural exploded diagram of the first damping member is shown;

[0072] Figure 18 yes Figure 8 A schematic diagram of a portion of the structure of the bottom connection assembly shown;

[0073] Figure 19 yes Figure 8 The bottom connection assembly shown is Figure 7A A schematic diagram of the assembly structure of the bottom cover of the main shaft;

[0074] Figure 20A yes Figure 6 The schematic diagram of the cross-sectional structure of the assembly structure of the bottom connecting component and the main shaft is shown along A1-A1;

[0075] Figure 20B yes Figure 20A A schematic diagram of the structure when the structure is in a closed state;

[0076] Figure 21A yes Figure 6The schematic diagram of the cross-sectional structure of the assembly structure of the bottom connecting component and the main shaft is shown along A2-A2;

[0077] Figure 21B yes Figure 21A A schematic diagram of the structure when the structure is in a closed state;

[0078] Figure 22A yes Figure 6 A schematic diagram of the cross-sectional structure of the assembly structure of the bottom connecting component and the main shaft taken along A3-A3;

[0079] Figure 22B yes Figure 22A A schematic diagram of the structure when the structure is in a closed state;

[0080] Figure 23A yes Figure 9 A schematic structural diagram of the third fixing frame shown at another angle;

[0081] Figure 23B yes Figure 23A A schematic structural diagram of the third fixing frame shown at another angle;

[0082] Figure 24A yes Figure 9 The fourth fixing frame is shown as a schematic structural diagram at another angle;

[0083] Figure 24B yes Figure 24A The fourth fixing frame is shown as a schematic structural diagram at another angle;

[0084] Figure 25 yes Figure 9 A schematic structural diagram of the third connecting arm at another angle is shown;

[0085] Figure 26 yes Figure 9 A schematic structural diagram of the fourth connecting arm at another angle is shown;

[0086] Figure 27 yes Figure 8 The middle connecting assembly shown is connected to Figure 7A A schematic diagram of the assembly structure of the middle cover of the main shaft is shown;

[0087] Figure 28 yes Figure 8 The top connection assembly shown is Figure 7A A schematic diagram of the assembly structure of the top cover of the main shaft;

[0088] Figure 29A yes Figure 6 A schematic structural diagram of the first connecting member shown;

[0089] Figure 29B yes Figure 29AA schematic structural diagram of the first connecting member shown at another angle;

[0090] Figure 30A yes Figure 6 A schematic structural diagram of the second connecting member shown;

[0091] Figure 30B yes Figure 30A A schematic structural diagram of the second connecting member shown at another angle;

[0092] Figure 31 yes Figure 6 A schematic structural diagram of the first support member shown at another angle;

[0093] Figure 32 yes Figure 6 A schematic structural diagram of the second support member shown at another angle;

[0094] Figure 33 yes Figure 4 A schematic structural diagram of the bottom structure of the rotating shaft assembly shown at another angle;

[0095] Figure 34A yes Figure 33 The cross-sectional structure diagram of the shaft assembly shown is taken along A4-A4;

[0096] Figure 34B yes Figure 34A A schematic diagram of the structure when the structure is in a closed state;

[0097] Figure 35A yes Figure 33 The cross-sectional structure diagram of the rotating shaft assembly is shown along A5-A5;

[0098] Figure 35B yes Figure 35A A schematic diagram of the structure when the structure is in a closed state;

[0099] Figure 36A yes Figure 33 The cross-sectional structure diagram of the rotating shaft assembly shown is taken along A6-A6;

[0100] Figure 36B yes Figure 36A A schematic diagram of the structure when the structure is in a closed state;

[0101] Figure 37 yes Figure 5 A schematic diagram of the connection relationship of the parts shown;

[0102] Figure 38A yes Figure 33 The cross-sectional structure diagram of the rotating shaft assembly shown is taken along A7-A7;

[0103] Figure 38B yes Figure 38A A schematic diagram of the structure when the structure is in a closed state;

[0104] Figure 39 yes Figure 2 Schematic diagram of part of the internal structure of the electronic device shown. DETAILED DESCRIPTION

[0105] The embodiments of the present application are described below in conjunction with the accompanying drawings. The directional terms mentioned in the embodiments of the present application, such as "upper," "lower," "side," "top," and "bottom," are merely references to the directions in the accompanying drawings. Therefore, the directional terms used are intended to better and more clearly illustrate and understand the embodiments of the present application, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the embodiments of the present application.

[0106] The term "plurality" means at least two. The term "above" includes the number itself. The term "and / or" is a description of an association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. Terms such as "first" and "second" are used for descriptive purposes only and cannot be understood as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0107] Please refer to Figure 1 and Figure 2 , Figure 1 1 is a structural diagram of an electronic device 1000 provided in an embodiment of the present application when in an open state. Figure 2 yes Figure 1 The electronic device 1000 is a schematic structural diagram when it is in a closed state.

[0108] In some embodiments, the electronic device 1000 includes a housing device 100 and a screen 200, wherein the screen 200 is mounted on the housing device 100. Figure 1 As shown, the housing device 100 can be unfolded to an open state; Figure 2 As shown, the housing device 100 can also be folded to a closed state. The housing device 100 can also be unfolded or folded to an intermediate state, which can be any state between the open state and the closed state. The screen 200 moves with the housing device 100, and the housing device 100 can drive the screen 200 to unfold or fold, so that the electronic device 1000 can be unfolded to an open state or folded to a closed state. When the electronic device 1000 is in the closed state, the screen 200 is located inside the housing device 100.

[0109] In this embodiment, when the electronic device 1000 is in the open state, the screen 200 is flattened and can display full screen, so that the electronic device 1000 has a larger display area, thereby improving the user's viewing and operating experience. When the electronic device 1000 is in the closed state, the planar size of the electronic device 1000 is small, making it easier for the user to carry and store.

[0110] In some embodiments, the screen 200 may integrate a display function and a touch sensing function. The display function of the screen 200 is used to display images, videos, etc., and the touch sensing function of the screen 200 is used to sense the user's touch actions to achieve human-computer interaction. Exemplarily, the screen 200 includes a flexible display screen that can be bent. Among them, the flexible display screen can be a liquid crystal display (LCD), an organic light-emitting diode (OLED) display screen, an active matrix organic light-emitting diode or an active matrix organic light-emitting diode (AMOLED) display screen, a flexible light-emitting diode (FLED) display screen, a MiniLED display screen, a MicroLED display screen, a Micro-OLED display screen, a quantum dot light-emitting diode (QLED) display screen, etc.

[0111] It should be understood that in this embodiment, the electronic device 1000 is taken as an example of a two-fold structure, that is, the electronic device 1000 includes two flat parts and a bent part connected between the two flat parts; the two flat parts can be rotated toward each other to overlap each other (corresponding to the closed state in the previous text), so that the electronic device 1000 presents a two-layer form; the two flat parts can also be rotated away from each other to be flattened (corresponding to the open state in the previous text). In some other embodiments, the electronic device 1000 can also be a structure that folds three or more, that is, the electronic device 1000 includes three or more flat parts, and two adjacent flat parts are connected by a bent part, and the two adjacent flat parts can be rotated relative to each other to overlap each other or rotated away from each other to be flattened. When the electronic device 1000 is a structure that folds three or more, the structure of the electronic device 1000 can be adaptively designed with reference to the description of the two-fold structure in this embodiment, and this application will not go into details about this.

[0112] Please refer to Figure 1 、 Figure 2 as well as Figure 3 , Figure 3 yes Figure 1 A schematic diagram of a partially exploded structure of the electronic device 1000 is shown.

[0113] In some embodiments, the housing device 100 includes a first housing 11 , a second housing 12 , a hinge assembly 2 , and a back cover 3 .

[0114] The hinge assembly 2 can be connected between the first shell 11 and the second shell 12. The hinge assembly 2 can be deformed so that the first shell 11 and the second shell 12 can be relatively unfolded to an open state and relatively folded to a closed state. The screen 200 can follow the movement of the first shell 11, the hinge assembly 2 and the second shell 12, thereby achieving unfolding and folding. It should be understood that when the electronic device 1000 is in the open state, the screen 200, the shell device 100 and the various components of the shell device 100 are correspondingly in the open state; when the electronic device 1000 is in the closed state, the screen 200, the shell device 100 and the various components of the shell device 100 are correspondingly in the closed state.

[0115] Among them, when the electronic device 1000 is in the open state, the angle between the first shell 11 and the second shell 12 can be approximately 180°, the first shell 11 and the second shell 12 are flattened, and the screen 200 is in a flattened state. In some other embodiments, when the electronic device 1000 is in the open state, the angle between the first shell 11 and the second shell 12 can also deviate slightly from 180°, such as 165°, 177° or 185°, etc. In this case, the first shell 11 and the second shell 12 are also considered to be flat. Among them, the angle between the first shell 11 and the second shell 12 is defined as the angle between the upper side of the first shell 11 and the upper side of the second shell 12. In the embodiment of the present application, the direction that is the same as the light emitting direction of the screen 200 is defined as "up", and the direction opposite to the light emitting direction of the screen 200 is defined as "down".

[0116] When the electronic device 1000 is in the closed state, the angle between the first housing 11 and the second housing 12 can be approximately 0°, and the first housing 11 and the second housing 12 are folded, and the screen 200 is in a folded configuration. For example, when the first housing 11 and the second housing 12 are folded, the lower surface of the first housing 11 can contact the lower surface of the second housing 12 to achieve positioning. In other embodiments, when the first housing 11 and the second housing 12 are folded, the lower surface of the first housing 11 can also be close to the lower surface of the second housing 12, with a small gap between them. This is not strictly limited in this application.

[0117] The back cover 3 is located below the hinge assembly 2 and is fixedly connected to the hinge assembly 2. When the electronic device 1000 is in the open state, the first housing 11 and the second housing 12 jointly cover the back cover 3, and the back cover 3 is hidden between the hinge assembly 2 and the first and second housings 11, 12. When the electronic device 1000 is in the closed state, the back cover 3 is exposed relative to the first and second housings 11, 12. The back cover 3 forms part of the appearance of the electronic device 1000, shielding the hinge assembly 2 to improve the consistency and aesthetics of the electronic device 1000 and making it easier for the user to hold the electronic device 1000.

[0118] It can be understood that the first shell 11 and the second shell 12 are shell parts used to install and fix other components of the electronic device 1000, and have diverse structures. The embodiment of the present application only briefly illustrates part of the structure of the first shell 11 and the second shell 12, and also provides a simplified diagram in the accompanying drawings. The embodiment of the present application does not strictly limit the specific structure of the first shell 11 and the second shell 12.

[0119] In some embodiments, the first shell 11 and the second shell 12 may be provided with a plurality of mounting structures such as protrusions and grooves on one side close to the hinge assembly 2, which are used to cooperate with the hinge assembly 2 and other components of the electronic device 1000, so that the hinge assembly 2 connects the first shell 11 and the second shell 12, and other components are installed on the first shell 11 and / or the second shell 12.

[0120] In the present application, the hinge assembly 2 connects the first shell 11 and the second shell 12. Through the structural design of the hinge assembly 2, the first shell 11 and the second shell 12 can be flattened when the electronic device 1000 is in the open state, and together with the hinge assembly 2, provide a flat support environment for the screen 200. They can also be folded when the electronic device 1000 is in the closed state, and together with the hinge assembly 2, provide a good screen space for the screen 200, so that the screen 200 of the electronic device 1000 can meet both the large-screen display requirements and the folding storage requirements, and the risk of damage to the screen 200 is small and the reliability is high.

[0121] The following is an example of the implementation structure of the rotating shaft assembly 2.

[0122] Please refer to Figure 4 、 Figure 5 as well as Figure 6 , Figure 4 yes Figure 3 The structural diagram of the rotating shaft assembly 2 is shown in the open state. Figure 5 yes Figure 4 The structural diagram of the rotating shaft assembly 2 is shown in a closed state. Figure 6 yes Figure 4The diagram shows a partially exploded structural diagram of the rotating shaft assembly 2.

[0123] In some embodiments, the rotating shaft assembly 2 includes a main shaft 21, a first support member 22, a second support member 23, a bottom connecting member 24, a middle connecting member 25, a top connecting member 26, a first connecting member 27, a second connecting member 28, a third connecting member 29, and a fourth connecting member 30. The main shaft 21 and the plurality of connecting members (24, 25, 26) together form the main motion mechanism of the rotating shaft assembly 2. In the embodiment of the present application, the two ends close to the main shaft 21 are defined as the top end and the bottom end, respectively, and the direction from the top end to the bottom end of the main shaft 21 is the extension direction of the main shaft 21; the direction close to the top end of the main shaft 21 is defined as "top", and the direction close to the bottom end of the main shaft 21 is defined as "bottom".

[0124] Exemplarily, the plurality of connecting components (24, 25, 26) are all connected to the main shaft 21, and the plurality of connecting components (24, 25, 26) are all capable of deformation and expansion or folding relative to the main shaft 21. The plurality of connecting components (24, 25, 26) are also all connected to the first shell 11 and the second shell 12 (see Figure 2 ), when the plurality of connecting components (24, 25, 26) are deformed relative to the main shaft 21, the first shell 11 and the second shell 12 are deformed relative to the main shaft 21 to be relatively unfolded or relatively folded.

[0125] The first support member 22 can be connected to the bottom connection assembly 24 through the first connection member 27 and to the top connection assembly 26 through the third connection member 29; the second support member 23 can be connected to the bottom connection assembly 24 through the second connection member 28 and to the top connection assembly 26 through the fourth connection member 30. The multiple connections (27, 28, 29, 30) can move so that the first support member 22 and the second support member 23 move with the multiple connection assemblies (24, 25, 26) to achieve relative expansion and folding. Figure 4 As shown, when the shaft assembly 2 is in the open state, the first support member 22 and the second support member 23 are relatively unfolded, and the first support member 22 and the second support member 23 are respectively located on both sides of the main shaft 21. The first support member 22, the main shaft 21 and the second support member 23 are used to jointly provide a flat supporting environment. Figure 5 As shown, when the hinge assembly 2 is in the folded state, the first support member 22 and the second support member 23 are folded relative to each other, and the first support member 22 and the second support member 23 are located on the same side of the main shaft 21. The distance between the first support member 22 and the second support member 23 increases in the direction approaching the main shaft 21. The first support member 22, the second support member 23 and the main shaft 21 together form a screen space 210. In this case, the screen space 210 can be shaped like a water drop or a shape similar to a water drop.

[0126] Among them, the embodiment of the present application is illustrated by taking the shaft assembly 2 having three connecting components as an example. It should be understood that in some other embodiments, the shaft assembly 2 may also have more or fewer connecting components, the connecting components may be split or merged, and the structures of multiple connecting components (24, 25, 26) may be the same or different, and the embodiment of the present application does not strictly limit this.

[0127] The following will describe the structures of multiple connecting components (24, 25, 26) in some embodiments provided by the present application, as well as the connection structure between the multiple connecting components (24, 25, 26) and the main shaft 21 in conjunction with the accompanying drawings.

[0128] Please refer to Figure 6 、 Figure 7A as well as Figure 7B , Figure 7A yes Figure 6 The schematic diagram of the exploded structure of the main shaft 21 is shown. Figure 7B yes Figure 7A The main shaft 21 is shown in another structural diagram at another angle. Figure 7B Relative perspective Figure 7A Flips the view angle left and right.

[0129] In some embodiments, the main shaft 21 includes a main support plate 211 and a plurality of covers (212, 213, 214), wherein the plurality of covers include a bottom cover 212, a middle cover 213, and a top cover 214. The bottom cover 212, the middle cover 213, and the top cover 214 are all located below the main support plate 211; the bottom cover 212 is fixed to the bottom of the main support plate 211, and a bottom space for installing the bottom connecting assembly 24 is formed between the bottom cover 212 and the main support plate 211; the middle cover 213 is fixed to the middle of the main support plate 211, and a middle space for installing the middle connecting assembly 25 is formed between the middle cover 213 and the main support plate 211; the top cover 214 is fixed to the top of the main support plate 211, and a top space for installing the top connecting assembly 26 is formed between the top cover 214 and the main support plate 211. In this embodiment, the number, structure, position, etc. of the multiple covers (212, 213, 214) are all arranged correspondingly to the multiple connecting components (24, 25, 26).

[0130] For example, Figure 7BAs shown, the main support plate 211 is provided with a plurality of matching structures on the lower side facing the plurality of covers (212, 213, 214), and the plurality of matching structures are used to match the plurality of covers (212, 213, 214) to form a plurality of spaces for installing a plurality of connection components (24, 25, 26). The plurality of matching structures may include structures such as grooves, openings, and protrusions. Exemplarily, the main support plate 211 may include a first curved surface 2115 and a first wavy surface 2116. The first curved surface 2115 and the first wavy surface 2116 are located at the bottom of the main support plate 211. The first curved surface 2115 may be a concave curved surface. The first wavy surface 2116 may include a plurality of areas arranged along the extension direction of the main shaft 21, each area including a plurality of concave curved surfaces, and the arrangement direction of the plurality of curved surfaces is perpendicular to the extension direction of the main shaft 21.

[0131] Among them, such as Figure 7B As shown, the main support plate 211 can be provided with a plurality of limiting holes 2112, a plurality of avoidance notches 2113, and a plurality of fastening holes 2114. The plurality of limiting holes 2112 are located at both ends of the main support plate 211, and are used to cooperate with the limiting structures of the bottom cover 212 and the top cover 214 to limit the installation position of the bottom cover 212 and the top cover 214 relative to the main support plate 211; the plurality of avoidance notches 2113 are located on both sides of the main support plate 211, and the plurality of avoidance notches 2113 are used to avoid the structural components of the plurality of connecting assemblies (24, 25, 26) during the movement of the shaft assembly 2. The plurality of fastening holes 2114 are used to allow fasteners to pass through. The plurality of avoidance notches 2113 and the plurality of fastening holes 2114 are dispersedly arranged at the bottom, middle, and top of the main support plate 211.

[0132] For example, Figure 7A As shown, the bottom cover 212 can be roughly a cover structure with a concave center and raised sides. Multiple avoidance notches 2121 can be provided on both sides of the bottom cover 212. The bottom cover 212 is provided with multiple mating structures on the upper side facing the main support plate 211. These mating structures are used to cooperate with the main support plate 211 to form a bottom space for mounting the bottom connection assembly 24. The multiple mating structures can include grooves, openings, protrusions, and other structures. For example, the bottom cover 212 can include a second curved surface 2122 and a second wavy surface 2123. The second curved surface 2122 is a concave curved surface; the second wavy surface 2123 includes multiple areas, each of which includes multiple concave curved surfaces. The second curved surface 2122 can cooperate with the first curved surface 2115 of the main support plate 211, and the second wavy surface 2123 can cooperate with the first wavy surface 2116 of the main support plate 211 to form a bottom space.

[0133] Among them, such as Figure 7AAs shown, the bottom cover 212 can be fixedly connected to the main support plate 211 via a plurality of fasteners. The bottom cover 212 can also be provided with a plurality of fastening holes 2125. The plurality of fastening holes 2125 of the bottom cover 212 are aligned with some of the fastening holes 2114 of the main support plate 211. The plurality of fasteners extend into the fastening holes 2125 of the bottom cover 212 and the fastening holes 2114 of the main support plate 211 to lock the bottom cover 212 and the main support plate 211.

[0134] Among them, such as Figure 7A As shown, the bottom cover body 212 can also be provided with a limiting column 2126, which is aligned with some limiting holes 2112 of the main support plate 211. The limiting column 2126 penetrates into the limiting hole 2112 at the bottom of the bottom cover body 212 to limit the installation position of the bottom cover body 212 relative to the main support plate 211.

[0135] For example, the structure of the middle cover 213 and the top cover 214 can be designed with reference to the bottom cover 212, and the connection structure between the middle cover 213 and the top cover 214 and the main support plate 211 can be designed with reference to the connection structure between the bottom cover 212 and the main support plate 211, which will not be described in detail here. It should be understood that in the embodiments of the present application, when one component is designed with reference to another component, the structures of the two components can be completely identical, or the core structures of the two components can be the same with minor structural differences, and this application does not strictly limit this.

[0136] Please refer to Figure 6 、 Figure 8 as well as Figure 9 , Figure 8 yes Figure 6 The schematic structural diagram of the multiple connection components (24, 25, 26) shown in FIG. Figure 9 yes Figure 8 A schematic diagram of the partially exploded structure of the multiple connection components (24, 25, 26) shown.

[0137] In some embodiments, the bottom connection assembly 24 includes a first fixing frame 241, a second fixing frame 242, a first connecting arm 243, a second connecting arm 244, a first swing arm 245, a second swing arm 246, and a first damping assembly 247. The first connecting arm 243 has two ends connected to the main shaft 21 and the first fixing frame 241, respectively. The first swing arm 245 has two ends connected to the main shaft 21 and the first fixing frame 241, respectively. The second connecting arm 244 has two ends connected to the main shaft 21 and the second fixing frame 242, respectively. The second swing arm 246 has two ends connected to the main shaft 21 and the second fixing frame 242, respectively. The first damping assembly 247 is mounted on the main shaft 21 and connects the first swing arm 245 and the second swing arm 246.

[0138] Among them, the bottom connecting component 24 can also include multiple bottom rotating shafts (2481, 2482, 2483, 2484), and the multiple bottom rotating shafts (2481, 2482, 2483, 2484) are used to connect other components of the bottom connecting component 24. The specific connection structure will be described later.

[0139] In some embodiments, the middle connecting assembly 25 includes a third fixing frame 251, a fourth fixing frame 252, a third connecting arm 253, a fourth connecting arm 254, a third swing arm 255, a fourth swing arm 256, and a second damping member 257. The third connecting arm 253 has two ends connected to the main shaft 21 and the third fixing frame 251, respectively. The third swing arm 255 has two ends connected to the main shaft 21 and the third fixing frame 251, respectively. The fourth connecting arm 254 has two ends connected to the main shaft 21 and the fourth fixing frame 252, respectively. The fourth swing arm 256 has two ends connected to the main shaft 21 and the fourth fixing frame 252, respectively. The second damping member 257 is mounted on the main shaft 21 and connects the third swing arm 255 and the fourth swing arm 256.

[0140] Among them, the central connecting component 25 can also include multiple central rotating shafts (2581, 2582, 2583, 2584), and the multiple central rotating shafts (2581, 2582, 2583, 2584) are used to plug in other components of the central connecting component 25. The specific connection structure will be described later.

[0141] Illustratively, the top connection assembly 26 includes a fifth fixing frame 261, a sixth fixing frame 262, a fifth connecting arm 263, a sixth connecting arm 264, a fifth swing arm 265, a sixth swing arm 266, and a third damping assembly 267. The fifth connecting arm 263 has two ends connected to the main shaft 21 and the fifth fixing frame 261, respectively. The fifth swing arm 265 has two ends connected to the main shaft 21 and the fifth fixing frame 261, respectively. The sixth connecting arm 264 has two ends connected to the main shaft 21 and the sixth fixing frame 262, respectively. The sixth swing arm 266 has two ends connected to the main shaft 21 and the sixth fixing frame 262, respectively. The third damping assembly 267 is mounted on the main shaft 21 and connects the fifth swing arm 265 and the sixth swing arm 266.

[0142] Among them, the top connection component 26 can also include multiple top rotating shafts (2681, 2682, 2683, 2684), and the multiple top rotating shafts (2681, 2682, 2683, 2684) are used to plug in other components of the top connection component. The specific connection structure will be described later.

[0143] The structures of the various components of the bottom connection assembly 24 and the connection structure between the bottom connection assembly 24 and the main shaft 21 are described in detail below with reference to the accompanying drawings.

[0144] Please refer to Figure 10A and Figure 10B , Figure 10A yes Figure 9 The schematic structural diagram of the first fixing frame 241 at another angle is shown. Figure 10B yes Figure 10A The structure diagram of the first fixing frame 241 is shown at another angle. Figure 10B The viewing angles shown are relative to Figure 10A The view shown is flipped left to right.

[0145] In some embodiments, the first fixing frame 241 has a first rotation axis hole 2411 , a first avoidance gap 2412 , a first sliding groove 2413 , a third arc-shaped groove 2414 and a plurality of fastening holes 2415 .

[0146] Illustratively, the first fixing frame 241 includes a first rotating connection portion 2416 and an installation space. The installation space extends from a side edge of the first rotating connection portion 2416 to an end surface of the first fixing frame 2411 and is used to install a mechanism connected to the first rotating connection portion 2416. A first rotation axis hole 2411 is formed in the first rotating connection portion 2416. The first fixing frame 2411 may also include a first mating block 2418. The first mating block 2418 is disposed in the installation space and fixedly connected to the first rotating connection portion 2416, and is used to mate with a mating structure of the mechanism connected to the first rotating connection portion 2416. The first mating block 2418 is wedge-shaped. Specifically, the first mating block 2418 has a first upper surface 24181 and a first lower surface 24182. The first lower surface 24182 of the first mating block 2418 constitutes the lower surface 2410 of the first fixing frame 241. The first upper surface 24181 is inclined relative to the first lower surface 24182, and the first upper surface 24181 is angled relative to the first lower surface 24182. The first avoidance notch 2412 can be located on the top or bottom side of the first matching block 2418 to avoid a portion of the structure connected to the first rotating connection portion 2416. There can also be two first avoidance notches 2412, located on the top and bottom sides of the first matching block 2418 respectively.

[0147] The first sliding groove 2413 has two oppositely disposed side walls, which are recessed to form a guide space for the first sliding groove 2413. In other words, the side walls of the first sliding groove 2413 may have a recessed guide space to guide the sliding direction of a structural component mounted in the first sliding groove 2413, thereby making the relative sliding movement between the first fixing frame 241 and the corresponding structural component easier to achieve and achieving higher control accuracy.

[0148] There are two third arcuate grooves 2414, and the two third arcuate grooves 2414 are respectively formed at the bottom and top of the first fixing frame 241. One side of the third arcuate groove 2414 located at the bottom of the first fixing frame 241 can extend to the bottom surface of the first fixing frame 241, and one side of the third arcuate groove 2414 located at the top of the first fixing frame 241 can extend to the top surface of the first fixing frame 241. In some other embodiments, the number of the third arcuate groove 2414 can also be one, formed at the bottom or top of the first fixing frame 241. A plurality of fastening holes 2415 are used to allow fasteners to pass through and are fixedly connected to the first shell 11 through the fasteners (see Figure 3 The plurality of fastening holes 2415 are dispersedly arranged at the bottom, middle and top of the first fixing frame 241 .

[0149] For example, the first fixing frame 241 includes a first locking block 2417, which is protruding and is used to lock into the first shell 11. The first locking block 2417 may be provided with a fastening hole 24171. In the present application, the first fixing frame 241 may be fixed to the first shell 11 by passing a plurality of fasteners through the plurality of fastening holes 24171 (see Figure 3 ).

[0150] The first fixing frame 241 has a first mating surface 2419 , which can be a plane. One end opening of the third arc-shaped groove 2414 is located on the first mating surface 2419 , and the first mating surface 2419 is tilted relative to the upper surface 24172 of the first locking block 2417 .

[0151] See also Figure 11A , Figure 11A yes Figure 9 The second fixing frame 242 is shown in another structural diagram at another angle. Figure 11B yes Figure 11A The structure diagram of the first fixing frame 241 is shown at another angle. Figure 11B The viewing angles shown are relative to Figure 11A The view shown is flipped left to right.

[0152] In some embodiments, the second fixing frame 242 has a second rotation axis hole 2421 , a second avoidance gap 2422 , a second sliding groove 2423 , a fourth arc-shaped groove 2424 and a plurality of fastening holes 2425 .

[0153] Exemplarily, the second fixing frame 242 includes a second rotating connection portion 2426 and an installation space. The installation space extends from the side of the second rotating connection portion 2426 to the end surface of the second fixing frame 242 and is used to install a mechanism connected to the second rotating connection portion 2426. A second rotation axis hole 2421 is formed in the second rotating connection portion 2426. The second fixing frame 242 may also include a second mating block 2428. The second mating block 2428 is disposed in the installation space and fixedly connected to the second rotating connection portion 2426, and is used to mate with the mating structure of the mechanism connected to the second rotating connection portion 2426. The second mating block 2428 is wedge-shaped. Specifically, the second mating block 2428 has a second upper surface 24281 and a second lower surface 24282. The second lower surface 24282 of the second mating block 2428 constitutes the lower surface 2420 of the second fixing frame 242. The second upper surface 24281 is inclined relative to the second lower surface 24282, and there is an angle between the second upper surface 24281 and the second lower surface 24282. The second avoidance notch 2422 can be located on the top or bottom side of the second matching block 2428 to avoid a portion of the structure connected to the second rotating connection portion 2426. There can also be two second avoidance notches 2422, located on the top and bottom sides of the second matching block 2428 respectively.

[0154] The second sliding groove 2423 has two oppositely disposed side walls, which are recessed to form a guide space for the second sliding groove 2423. In other words, the side walls of the second sliding groove 2423 may have a recessed guide space to guide the sliding direction of the structural component mounted in the second sliding groove 2423, making the relative sliding movement between the second fixing frame 242 and the corresponding structural component easier to achieve and achieving higher control accuracy.

[0155] There are two fourth arcuate grooves 2424, and the two fourth arcuate grooves 2424 are respectively formed at the bottom and top of the second fixing frame 242. One side of the fourth arcuate groove 2424 located at the bottom of the second fixing frame 242 can extend to the bottom surface of the second fixing frame 242, and one side of the fourth arcuate groove 2424 located at the top of the second fixing frame 242 can extend to the top surface of the second fixing frame 242. In some other embodiments, there can also be one fourth arcuate groove 2424, which is formed at the bottom or top of the second fixing frame 242. A plurality of fastening holes 2415 are used to allow fasteners to pass through and are fixedly connected to the second shell 12 through the fasteners (see Figure 3 The plurality of fastening holes 2425 are dispersedly arranged at the bottom, middle and top of the second fixing frame 242 .

[0156] Exemplarily, the second fixing frame 242 includes a second locking block 2427, which is protruding and is used to lock into the second shell 12. The second locking block 2427 can be provided with a fastening hole 24271. In this application, the second fixing frame 242 can be fixed to the second shell 12 by passing multiple fasteners through the multiple fastening holes 24271 (see Figure 3 ).

[0157] The second fixing frame 242 has a second mating surface 2429 , which can be a plane. One end opening of the fourth arc-shaped slot 2424 is located on the second mating surface 2429 , and the second mating surface 2429 is tilted relative to the upper surface 24272 of the second locking block 2427 .

[0158] See also Figure 12 , Figure 12 yes Figure 9 The structure diagram of the first connecting arm 243 shown is from another angle.

[0159] In some embodiments, the first connecting arm 243 includes a first end 2431 and a second end 2432, both of which are rotating ends. For example, the first end 2431 of the first connecting arm 243 is an arc-shaped arm; the second end 2432 of the first connecting arm 243 is provided with a rotating shaft hole 24321.

[0160] The first connecting arm 243 further includes a connecting section 2433 connected between the first end 2431 and the second end 2432. For example, the upper surface of the connecting section 2433 can be bent relative to the upper surface of the second end 2432 of the first connecting arm 243. A mating space 24331 is provided on the lower side of the connecting section 2433, which can cooperate with the mating structure of the first fixing frame 241 to meet the structural coordination requirements between the first fixing frame 241 and the first connecting arm 243. Furthermore, the provision of the connecting section 2433 makes the structural design of the first connecting arm 243 more flexible, better meeting the connection and shape requirements of the bottom connecting assembly 24 and the rotating shaft assembly 2.

[0161] The first connecting arm 243 can be an integrally formed structural member to provide greater structural strength. For example, the first connecting arm 243 can be formed using a computer numerical control (CNC) milling process. In other embodiments, the first connecting arm 243 can also be formed using a metal injection molding process, which is not strictly limited in this embodiment of the present application.

[0162] See also Figure 13 , Figure 13 yes Figure 9 The structure of the second connecting arm 244 is shown at another angle.

[0163] In some embodiments, the second connecting arm 244 includes a first end 2441 and a second end 2442, both of which are rotating ends. For example, the first end 2441 of the second connecting arm 244 is an arc-shaped arm; the second end 2442 of the second connecting arm 244 is provided with a rotating shaft hole 24421.

[0164] The second connecting arm 244 also includes a connecting section 2443 connected between the first end 2441 and the second end 2442. For example, the upper surface of the connecting section 2443 can be bent relative to the upper surface of the second end 2442 of the second connecting arm 244. A mating space 24431 is provided on the lower side of the connecting section 2443, which can be mated with the mating structure of the second fixing frame 242 to meet the structural requirements of the second fixing frame 242 and the second connecting arm 244. Furthermore, the provision of the connecting section 2443 makes the structural design of the second connecting arm 244 more flexible, better meeting the connection and shape requirements of the bottom connecting assembly 24 and the rotating shaft assembly 2.

[0165] The second connecting arm 244 can be an integrally formed structural member to provide greater structural strength. For example, the second connecting arm 244 can be formed using a computer numerical control milling process. In other embodiments, the second connecting arm 244 can also be formed using a metal injection molding process, which is not strictly limited in this embodiment of the present application.

[0166] In some embodiments, the shape of the first connecting arm 243 can be the same as that of the second connecting arm 244, so that the same material is used, the type of material of the rotating shaft assembly 2 is saved, and the cost of the rotating shaft assembly 2 is reduced. In other embodiments, the shape of the first connecting arm 243 can be different from that of the second connecting arm 244, and this embodiment of the present application is not strictly limited to this.

[0167] See also Figure 14 , Figure 14 yes Figure 9 The structure diagram of the first swing arm 245 shown is another angle.

[0168] In some embodiments, the first swing arm 245 includes a rotating end 2451 and a sliding end 2452. The rotating end 2451 of the first swing arm 245 is provided with a shaft hole 24511, which passes through the rotating end 2451 of the first swing arm 245. The rotating end 2451 of the first swing arm 245 can be provided with a structure for engaging the first damping assembly 247. For example, the rotating end 2451 of the first swing arm 245 may include a plurality of meshing teeth 24512, a plurality of first protrusions 24513 and a plurality of second protrusions 24514; the plurality of meshing teeth 24512 may be located in the middle of the rotating end 2451 of the first swing arm 245, and on the side of the sliding end 2452 facing away from the first swing arm 245; the plurality of first protrusions 24513 and the plurality of second protrusions 24514 are arranged back to back at both ends of the rotating end 2451 of the first swing arm 245, the plurality of first protrusions 24513 are arranged in a ring and spaced apart from each other, the plurality of first protrusions 24513 are arranged around the rotating shaft hole 24511 of the rotating end 2451 of the first swing arm 245, the plurality of second protrusions 24514 are arranged in a ring and spaced apart from each other, and the plurality of second protrusions 24514 are arranged around the rotating shaft hole 24511 of the rotating end 2451 of the first swing arm 245.

[0169] The sliding end 2452 of the first swing arm 245 includes a sliding block 24521 and a rotating connection block 24522. The rotating connection block 24522 is located above the sliding block 24521 and fixedly connected to the sliding block 24521. The sliding end 2452 of the first swing arm 245 is provided with a first shaft insertion hole 24523. In some embodiments, the first shaft insertion hole 24523 is located in the rotating connection block 24522. In other embodiments, the first shaft insertion hole 24523 may be located partially in the rotating connection block 24522 and partially in the sliding block 24521, thereby fully utilizing the thickness of the sliding end 2452 of the first swing arm 245 and facilitating a thinner and lighter sliding end 2452 of the first swing arm 245. Among them, the sliding end 2452 of the first swing arm 245 is also provided with a first avoidance area 24524, the first avoidance area 24524 passes through the sliding block 24521 and the rotating connecting block 24522, and the first avoidance area 24524 also extends to the end face of the sliding end 2452 away from the rotating end 2451. The first avoidance area 24524 divides the first shaft hole 24523 into two parts.

[0170] The first swing arm 245 further includes a connecting section 2453 connected between the rotating end 2451 and the sliding end 2452. For example, the connecting section 2453 of the first swing arm 245 can be bent relative to the sliding end 2452 of the first swing arm 245, so that the structural design of the first swing arm 245 is more flexible and can better meet the connection and shape requirements of the bottom connecting assembly 24 and the rotating shaft assembly 2.

[0171] Exemplarily, the connecting section 2453 of the first swing arm 245 may include two extension blocks 24531 , which are respectively located on both sides of the connecting section 2453 of the first swing arm 245 . The two extension blocks 24531 can increase the structural strength of the first swing arm 245 .

[0172] The first swing arm 245 may be an integrally formed structural member to provide a high structural strength. For example, the first swing arm 245 may be formed by a metal injection molding process or other processes, which are not strictly limited in this embodiment of the present application.

[0173] See also Figure 15 , Figure 15 yes Figure 9 The structure diagram of the second swing arm 246 shown is another angle.

[0174] In some embodiments, the second swing arm 246 includes a rotating end 2461 and a sliding end 2462. The rotating end 2461 of the second swing arm 246 is provided with a shaft hole 24611, which passes through the rotating end 2461 of the second swing arm 246. The rotating end 2461 of the second swing arm 246 can be provided with a structure for engaging with the first damping assembly 247. For example, the rotating end 2461 of the second swing arm 246 may include a plurality of meshing teeth 24612, a plurality of first protrusions 24613 and a plurality of second protrusions 24614; the plurality of meshing teeth 24612 may be located in the middle of the rotating end 2461 of the second swing arm 246, and on the side of the sliding end 2462 facing away from the second swing arm 246; the plurality of first protrusions 24613 and the plurality of second protrusions 24614 are arranged back to back at both ends of the rotating end 2461 of the second swing arm 246, the plurality of first protrusions 24613 are arranged in a ring and spaced apart from each other, the plurality of first protrusions 24613 are arranged around the rotating shaft hole 24611 of the rotating end 2461 of the second swing arm 246, the plurality of second protrusions 24614 are arranged in a ring and spaced apart from each other, and the plurality of second protrusions 24614 are arranged around the rotating shaft hole 24611 of the rotating end 2461 of the second swing arm 246.

[0175] The sliding end 2462 of the second swing arm 246 includes a sliding block 24621 and a rotating connection block 24622. The rotating connection block 24622 is located above the sliding block 24621 and fixedly connected to the sliding block 24621. The sliding end 2462 of the second swing arm 246 is provided with a second shaft insertion hole 24623. In some embodiments, the second shaft insertion hole 24623 is located in the rotating connection block 24622. In other embodiments, the second shaft insertion hole 24623 may be located partially in the rotating connection block 24622 and partially in the sliding block 24621, thereby fully utilizing the thickness of the sliding end 2462 of the second swing arm 246 and facilitating a thinner and lighter sliding end 2462 of the second swing arm 246. Among them, the sliding end 2462 of the second swing arm 246 is also provided with a second avoidance area 24624, the second avoidance area 24624 passes through the sliding block 24621 and the rotating connecting block 24622, and the second avoidance area 24624 also extends to the end face of the sliding end 2462 away from the rotating end 2461. The second avoidance area 24624 divides the second shaft hole 24623 into two parts.

[0176] The second swing arm 246 may be an integrally formed structural member to provide a high structural strength. For example, the second swing arm 246 may be formed by a metal injection molding process or other processes, which are not strictly limited in this embodiment of the present application.

[0177] In some embodiments, the shape of the first swing arm 245 can be the same as that of the second swing arm 246, so that the same material is used, the type of material of the rotating shaft assembly 2 is saved, and the cost of the rotating shaft assembly 2 is reduced. In other embodiments, the shape of the first swing arm 245 can be different from that of the second swing arm 246, and this embodiment of the present application is not strictly limited to this.

[0178] Please refer to Figure 9 、 Figure 16 and Figure 17 , Figure 16 yes Figure 9 The schematic structural diagram of the first damping assembly 247 at another angle is shown. Figure 17 yes Figure 16 A schematic diagram of the structural decomposition of the first damping member 247 is shown.

[0179] In some embodiments, the first damping assembly 247 includes a first retaining member 2471, a second retaining member 2472, a plurality of synchronous gears 2473, a first fixing plate 2474, an elastic member 2475, a second fixing plate 2476, a first transfer shaft 2477, a second transfer shaft 2478, and a plurality of third transfer shafts 2479. In this embodiment, "two synchronous gears 2473 and two third transfer shafts 2479" are used as an example for illustration.

[0180] Exemplarily, the first retaining member 2471 includes a first retaining plate 24711 and a plurality of first protrusion groups 24712, wherein the plurality of first protrusion groups 24712 are fixed to the same side surface of the first retaining plate 24711. The first retaining plate 24711 includes a plurality of first through holes 24713, which are spaced apart from each other. The plurality of first through holes 24713 can be arranged in a straight line, an arc, a wavy line, or other arrangement patterns. The plurality of first protrusion groups 24712 are arranged in a one-to-one correspondence with the plurality of first through holes 24713. The number of first through holes 24713 and the number of first protrusion groups 24712 can be four. Each first bump group 24712 may include a plurality of first bumps 24714 arranged in a ring shape and spaced apart from each other. The plurality of first bumps 24714 are disposed around the first through-hole 24713, and a first retaining groove 24715 is formed between two adjacent first bumps 24714. The first retaining member 2471 may be an integrally formed structural member to provide greater structural strength.

[0181] Exemplarily, the second retaining member 2472 includes a second retaining plate 24721 and a plurality of second protrusion groups 24722, wherein the plurality of second protrusion groups 24722 are fixed to the same side surface of the second retaining plate 24721. The second retaining plate 24721 includes a plurality of second through holes 24723, which are spaced apart from each other. The plurality of second protrusion groups 24722 are arranged in a one-to-one correspondence with the plurality of second through holes 24723. The number of second through holes 24723 and the number of second protrusion groups 24722 may be four. Each second protrusion group 24722 may include a plurality of second protrusions 24724, which are arranged in a ring shape and spaced apart from each other. The plurality of second protrusions 24724 are arranged around the second through holes 24723, and a second retaining groove 24725 is formed between two adjacent second protrusions 24724. The second retaining member 2472 may be an integrally formed structural member to provide higher structural strength.

[0182] The structure of the second retaining member 2472 can be the same as that of the first retaining member 2471, so as to use the same material, reduce the types of materials of the rotating shaft assembly 2, and reduce the cost of the rotating shaft assembly 2. In other embodiments, the structure of the second retaining member 2472 can also be different from that of the first retaining member 2471, and this application is not strictly limited to this.

[0183] The plurality of first protrusion groups 24712 of the first retaining member 2471 and the plurality of second protrusion groups 24722 of the second retaining member 2472 are arranged opposite to each other, and the plurality of first protrusion groups 24712 correspond one-to-one with the plurality of second protrusion groups 24722. For example, in the corresponding first protrusion group 24712 and second protrusion group 24722, the position of the first protrusion 24714 is directly opposite to the position of the second protrusion 24724, and the position of the first retaining groove 24715 is directly opposite to the position of the second retaining groove 24725. In other embodiments, the position of the first protrusion 24714 and the position of the second protrusion 24724 may be staggered or have other positional relationships, and the position of the first retaining groove 24715 and the position of the second retaining groove 24725 may be staggered or have other positional relationships, and this application is not strictly limited to this.

[0184] Exemplarily, multiple synchronous gears 2473 are positioned between the first retaining member 2471 and the second retaining member 2472, and the multiple synchronous gears 2473 mesh with each other. Each synchronous gear 2473 is provided with a rotation shaft hole 24731. Each synchronous gear 2473 may include multiple meshing teeth 24732, multiple first protrusions 24733, and multiple second protrusions 24734. The multiple meshing teeth 24732 may be located in the middle of the synchronous gear 2473, and the multiple meshing teeth 24732 of two adjacent synchronous gears 2473 mesh with each other. A plurality of first protrusions 24733 and a plurality of second protrusions 24734 are arranged back to back at both ends of the synchronous gear 2473, the plurality of first protrusions 24733 are arranged in a ring shape and spaced apart from each other, the plurality of first protrusions 24733 are arranged around the rotating shaft hole 24731 of the synchronous gear 2473, the plurality of second protrusions 24734 are arranged in a ring shape and spaced apart from each other, and the plurality of second protrusions 24734 are arranged around the rotating shaft hole 24731 of the synchronous gear 2473.

[0185] In some operating positions, the multiple first protrusions 24733 of the synchronous gear 2473 are staggered with the multiple first protrusions 24714 of one of the first protrusion groups 24712 to form a snap-fit ​​structure, and the multiple first protrusions 24733 correspondingly snap into the multiple first snap-fit ​​grooves 24715. The multiple second protrusions 24734 of the synchronous gear 2473 are staggered with the multiple second protrusions 24724 of one of the second protrusion groups 24722 to form a snap-fit ​​structure, and the multiple second protrusions 24734 correspondingly snap into the multiple second snap-fit ​​grooves 24725. The shapes and positions of the multiple first protrusions 24733 of the synchronous gear 2473 match the shapes and positions of the corresponding multiple first snap-fit ​​grooves 24715. The shapes and positions of the multiple second protrusions 24734 of the synchronous gear 2473 match the shapes and positions of the corresponding multiple second snap-fit ​​grooves 24725.

[0186] The synchronous gear 2473 can be an integrally formed structural component to provide high structural strength. Multiple synchronous gears 2473 can have the same structure, using the same material, reducing the number of materials used in the rotating shaft assembly 2 and lowering the cost of the rotating shaft assembly 2. In other embodiments, the structures of the multiple synchronous gears 2473 can also differ, and this application is not strictly limited to this.

[0187] Illustratively, the first fixing plate 2474 is located on a side of the first retaining member 2471 facing away from the second retaining member 2472. The first fixing plate 2474 includes a plurality of spaced apart retaining slots 24741 extending to the side of the first fixing plate 2474, so that the adapter shafts (2477, 2478, 2479) can be inserted into the retaining slots 24741 from the side of the first fixing plate 2474 to engage the first fixing plate 2474. The first fixing plate 2474 can be substantially flat.

[0188] Illustratively, the elastic member 2475 is located on the side of the second retaining member 2472 facing away from the first retaining member 2471. The elastic member 2475 includes a plurality of springs 24751. The number of springs 24751 is the same as the number of first through holes 24713. Specifically, the number of springs 24751 may be four. In other embodiments, the elastic member 2475 may also be made of an elastic material such as elastic rubber, which is not strictly limited in this application.

[0189] Illustratively, the second fixing plate 2476 is located on the side of the elastic member 2475 facing away from the second retaining member 2472. The second fixing plate 2476 can be a plate structure. The second fixing plate 2476 includes a plurality of third through holes 24761, which are spaced apart from each other. Illustratively, the number, arrangement shape, and arrangement spacing of the plurality of first through holes 24713, the plurality of second through holes 24723, and the plurality of third through holes 24761 can be the same. The number of third through holes 24761 can be four.

[0190] Illustratively, a limiting flange 24771 is provided at the top end of the first adapter shaft 2477. The outer diameter of the limiting flange 24771 is larger than the outer diameter of the main portion of the first adapter shaft 2477. A limiting groove 24772 is provided at the bottom end of the first adapter shaft 2477. The limiting groove 24772 is recessed relative to the outer surface of the main portion of the first adapter shaft 2477. The diameter of the bottom wall of the limiting groove 24772 is smaller than the outer diameter of the main portion of the first adapter shaft 2477.

[0191] The first transfer shaft 2477 is connected to the second fixing plate 2476, one of the springs 24751, the second retaining member 2472, the first retaining member 2471, and the first fixing plate 2474. The first transfer shaft 2477 passes through one of the third through holes 24761 of the second fixing plate 2476, the inner space of one of the springs 24751, one of the second through holes 24723 of the second retaining member 2472, one of the first through holes 24713 of the first retaining member 2471, and one of the slots 24741 of the first fixing plate 2474. Furthermore, the limiting flange 24771 of the first transfer shaft 2477 is located on the side of the second fixing plate 2476 facing away from the second retaining member 2472 and abuts against the second fixing plate 2476. The first fixing plate 2474 engages with the limiting retaining groove 24772 of the first transfer shaft 2477, thereby maintaining a relatively fixed positional relationship among the first transfer shaft 2477, the second fixing plate 2476, one of the springs 24751, the second retaining member 2472, the first retaining member 2471, and the first fixing plate 2474, with the spring 24751 being in a compressed state. The bottom end of the first transfer shaft 2477 can also be fixedly connected to the first fixing plate 2474 by welding or bonding.

[0192] Illustratively, a limiting flange 24781 is provided at the top end of the second transfer shaft 2478. The outer diameter of the limiting flange 24781 is larger than the outer diameter of the main body of the second transfer shaft 2478. A limiting slot 24782 is provided at the bottom end of the second transfer shaft 2478. The limiting slot 24782 is recessed relative to the outer surface of the main body of the second transfer shaft 2478. The diameter of the bottom wall of the limiting slot 24782 is smaller than the outer diameter of the main body of the second transfer shaft 2478. The structure of the second transfer shaft 2478 can be the same as that of the first transfer shaft 2477, so that the same material is used, reducing the number of materials used in the rotating shaft assembly 2 and reducing the cost of the rotating shaft assembly 2. In other embodiments, the structure of the second transfer shaft 2478 can also differ from that of the first transfer shaft 2477, and this is not strictly limited in this application.

[0193] The second transfer shaft 2478 is inserted into the second fixing plate 2476, the other spring 24751, the second retaining member 2472, the first retaining member 2471, and the first fixing plate 2474. The second transfer shaft 2478 passes through the other third through-hole 24761 of the second fixing plate 2476, the inner space of the other spring 24751, the other second through-hole 24723 of the second retaining member 2472, the other first through-hole 24713 of the first retaining member 2471, and the other retaining slot 24741 of the first fixing plate 2474. Furthermore, the limiting flange 24781 of the second transfer shaft 2478 is located on the side of the second fixing plate 2476 facing away from the second retaining member 2472 and abuts against the second fixing plate 2476. The first fixing plate 2474 engages with the limiting groove 24782 of the second transfer shaft 2478, thereby maintaining a relatively fixed positional relationship among the second transfer shaft 2478, the second fixing plate 2476, the other spring 24751, the second retaining member 2472, the first retaining member 2471, and the first fixing plate 2474, with the spring 24751 in a compressed state. The bottom end of the second transfer shaft 2478 can also be fixedly connected to the first fixing plate 2474 by welding or bonding.

[0194] Illustratively, a limiting flange 24791 is provided at the top end of the third adapter shaft 2479. The outer diameter of the limiting flange 24791 is larger than the outer diameter of the main body of the third adapter shaft 2479. A limiting slot 24792 is provided at the bottom end of the third adapter shaft 2479. The limiting slot 24792 is recessed relative to the outer surface of the main body of the third adapter shaft 2479. The diameter of the bottom wall of the limiting slot 24792 is smaller than the outer diameter of the main body of the third adapter shaft 2479. The structure of the third adapter shaft 2479 can be the same as that of the first adapter shaft 2477, so that the same material is used, reducing the number of materials used in the rotating shaft assembly 2 and reducing the cost of the rotating shaft assembly 2. In other embodiments, the structure of the third adapter shaft 2479 can also differ from that of the first adapter shaft 2477, and this is not strictly limited in this application.

[0195] The number of third adapter shafts 2479 is the same as the number of synchronous gears 2473. The third adapter shafts 2479, synchronous gears 2473, and some of the springs 24751 in the elastic member 2475 are arranged in a one-to-one correspondence. The third adapter shaft 2479 is inserted into the second fixing plate 2476, another spring 24751, the second retaining member 2472, the synchronous gear 2473, the first retaining member 2471, and the first fixing plate 2474. The third adapter shaft 2479 passes through the other third through-hole 24761 of the second fixing plate 2476, the inner space of the other spring 24751, the other second through-hole 24723 of the second retaining member 2472, the rotating shaft hole 24731 of the synchronous gear 2473, the other first through-hole 24713 of the first retaining member 2471, and the other retaining slot 24741 of the first fixing plate 2474. Furthermore, the limiting flange 24791 of the third transfer shaft 2479 is located on the side of the second fixing plate 2476 facing away from the second retaining member 2472 and abuts against the second fixing plate 2476. The first fixing plate 2474 engages with the limiting groove 24792 of the third transfer shaft 2479, thereby maintaining a relatively fixed position between the third transfer shaft 2479, the second fixing plate 2476, the other spring 24751, the second retaining member 2472, the first retaining member 2471, and the first fixing plate 2474, with the spring 24751 in a compressed state. The bottom end of the third transfer shaft 2479 can also be fixedly connected to the first fixing plate 2474 by welding or bonding.

[0196] See also Figure 18 , Figure 18 yes Figure 8 The bottom connection assembly 24 is shown as a partial structural diagram, and is combined with reference to Figure 12 The structure of the first swing arm 245 is shown, Figure 13 The structure of the second swing arm 246 and Figure 17 The structure of the first damping assembly 247 is shown.

[0197] In some embodiments, the rotating end 2451 of the first swing arm 245 and the rotating end 2461 of the second swing arm 246 are located between the first retaining member 2471 and the second retaining member 2472. The first adapter shaft 2477 further passes through the rotating shaft hole 24511 of the rotating end 2451 of the first swing arm 245 to be inserted into the rotating end 2451 of the first swing arm 245. The second adapter shaft 2478 further passes through the rotating shaft hole 24611 of the rotating end 2461 of the second swing arm 246 to be inserted into the rotating end 2461 of the second swing arm 246.

[0198] In some usage states, the multiple first protrusions 24513 of the first swing arm 245 and the multiple first protrusions 24714 of a first protrusion group 24712 are staggered to form a snap-fit ​​structure, and the multiple first protrusions 24513 are correspondingly snapped into the multiple first snap-fit ​​grooves 24715; the multiple second protrusions of the first swing arm 245 and the multiple second protrusions 24714 of a second protrusion group 24722 are staggered to form a snap-fit ​​structure, and the multiple second protrusions 24514 are correspondingly snapped into the multiple second snap-fit ​​grooves 24715.

[0199] The multiple first protrusions 24613 of the second swing arm 246 and the multiple first protrusions 24714 of another first protrusion group 24712 are staggered and arranged to form a clamping structure, and the multiple first protrusions 24613 are correspondingly clamped into the multiple first clamping grooves 24715; the multiple second protrusions 24614 of the second swing arm 246 and the multiple second protrusions 24724 of another second protrusion group 24722 are staggered and arranged to form a clamping structure, and the multiple second protrusions 24614 are correspondingly clamped into the multiple second clamping grooves 24725.

[0200] The shapes and positions of the multiple first protrusions (24513, 24613) of the first swing arm 245 and the second swing arm 246 match the shapes and positions of the corresponding multiple first locking grooves 24715. The shapes and positions of the multiple second protrusions (24514, 24614) of the first swing arm 245 and the second swing arm 246 match the shapes and positions of the corresponding multiple second locking grooves 24725.

[0201] The rotating end 2451 of the first swing arm 245 engages with the rotating end 2461 of the second swing arm 246 via a plurality of synchronous gears 2473. For example, the plurality of synchronous gears 2473 may be arranged in a series, with two adjacent synchronous gears 2473 engaging with each other, and the two synchronous gears 2473 at the ends engaging with the rotating end 2451 of the first swing arm 245 and the rotating end 2461 of the second swing arm 246, respectively. The plurality of meshing teeth 24512 of the rotating end 2451 of the first swing arm 245 engage with the plurality of meshing teeth 24732 of the adjacent synchronous gears 2473, and the plurality of meshing teeth 24612 of the rotating end 2461 of the second swing arm 246 engage with the plurality of meshing teeth 24732 of the adjacent synchronous gears 2473.

[0202] In this embodiment, the rotating end 2451 of the first swing arm 245, the rotating end 2461 of the second swing arm 246, and the synchronous gear 2473 are all engaged with the first retaining member 2471 and the second retaining member 2472, forming a locking structure, which allows the first swing arm 245 and the second swing arm 246 to stay in certain positions. In addition, since the relative positions of the various components of the first damping assembly 247 are stable and the elastic member 2475 is in a compressed state, the elastic force generated by the elastic member 2475 drives the first retaining member 2471 and the second retaining member 2472 to cooperate and compress the rotating end 2451 of the first swing arm 245, the synchronous gear 2473, and the rotating end 2461 of the second swing arm 246, thereby maintaining a stable locking structure between the rotating end 2451 of the first swing arm 245, the synchronous gear 2473, and the rotating end 2461 of the second swing arm 246 and the first retaining member 2471 and the second retaining member 2472.

[0203] Among them, when the rotating end 2451 of the first swing arm 245, the rotating end 2461 of the second swing arm 246 and the synchronous gear 2473 rotate relative to the first locking member 2471 and the second locking member 2472, the relative positions of the multiple first protrusions (24513, 24613, 24733) and the multiple first protrusions 24714 change, and different locking structures can be formed. The relative positions of the multiple second protrusions (24514, 24614, 24734) and the multiple second protrusions 24724 change, and different locking structures can be formed. For example, in the open state, the rotating end 2451 of the first swing arm 245, the rotating end 2461 of the second swing arm 246 and the synchronous gear 2473 form a first clamping structure relative to the first clamping member 2471 and the second clamping member 2472; in the closed state, the rotating end 2451 of the first swing arm 245, the rotating end 2461 of the second swing arm 246 and the synchronous gear 2473 form a second clamping structure relative to the first clamping member 2471 and the second clamping member 2472.

[0204] Specifically, when the first swing arm 245 and the second swing arm 246 move relative to each other, the rotating end 2451 of the first swing arm 245, the synchronous gear 2473, and the rotating end 2461 of the second swing arm 246 and the first locking member 2471 and the second locking member 2472 need to be converted from one locking structure to another, that is, the first protrusion (24513, 24613, 24733) needs to be disengaged from one of the first locking grooves 24715, cross over a first protrusion 24714, and be clamped into another first locking groove 24715, and the second protrusion (24514, 24614, 24734) needs to be disengaged from one of the second locking grooves 24725, cross over a second protrusion 24724, and be clamped into another second locking groove 24725. During the transition of the engaging structure, the first engaging member 2471 moves away from the second engaging member 2472, and the elastic member 2475 is further compressed. The elastic force generated by the elastic member 2475 forms a motion damping force, so that a certain driving force is required for relative movement between the first swing arm 245 and the second swing arm 246. In short, the first damping assembly 247 can provide a motion damping force for the relative movement between the first swing arm 245 and the second swing arm 246.

[0205] Please refer to Figure 19 、 Figure 20A as well as Figure 20B , Figure 19 yes Figure 8 The bottom connecting assembly 24 is shown with Figure 7A The schematic diagram of the assembly structure of the bottom cover 212 of the main shaft 21 is shown. Figure 20A yes Figure 6 The schematic diagram of the cross-sectional structure of the assembly structure of the bottom connecting component 24 and the main shaft 21 is shown along A1-A1. Figure 20B yes Figure 20A The cross section taken along A1-A1 passes through the first fixing frame 241, the first swing arm 245, the main shaft 21, the second swing arm 246 and the second fixing frame 242.

[0206] In some embodiments, the rotating end 2451 of the first swing arm 245, the rotating end 2461 of the second swing arm 246, and the first damping assembly 247 are all mounted on the main shaft 21. The first retaining member 2471 and the second retaining member 2472 of the first damping assembly 247 are fixed relative to the main shaft 21. The rotating end 2451 of the first swing arm 245 is rotationally connected to the first retaining member 2471 and the second retaining member 2472 via a first adapter shaft 2477, thereby being rotationally connected to the main shaft 21. The rotating end 2461 of the second swing arm 246 is rotationally connected to the first retaining member 2471 and the second retaining member 2472 via a second adapter shaft 2478, thereby being rotationally connected to the main shaft 21. Each synchronous gear 2473 is rotationally connected to the first retaining member 2471 and the second retaining member 2472 via a third adapter shaft 2479, thereby being rotationally connected to the main shaft 21.

[0207] In this embodiment, the rotating end 2451 of the first swing arm 245 is connected to the rotating end 2461 of the second swing arm 246 by a plurality of synchronous gears 2473. Therefore, the rotation angle of the rotating end 2451 of the first swing arm 245 and the rotation angle of the rotating end 2461 of the second swing arm 246 are the same in magnitude and opposite in direction, so that the rotation movements of the first swing arm 245 and the second swing arm 246 relative to the main shaft 21 remain synchronized, that is, they approach or move away from each other synchronously.

[0208] The bottom rotating shaft 2483 can pass through the first shaft insertion hole 24523 of the sliding end 2452 of the first swing arm 245 to be inserted into the sliding end 2452 of the first swing arm 245, thereby moving along with the sliding end 2452 of the first swing arm 245. The bottom rotating shaft 2484 can pass through the second shaft insertion hole 24623 of the sliding end 2462 of the second swing arm 246 to be inserted into the sliding end 2462 of the second swing arm 246, thereby moving along with the sliding end 2462 of the second swing arm 246. In other embodiments, the bottom rotating shaft 2483 can also be connected to the sliding end 2452 of the first swing arm 245 in other ways, which is not limited in this application.

[0209] Please refer to Figure 19 、 Figure 21A as well as Figure 21B , Figure 21A yes Figure 6 The schematic diagram of the cross-sectional structure of the assembly structure of the bottom connecting component 24 and the main shaft 21 is shown along A2-A2. Figure 21B yes Figure 21A The cross section taken along A2-A2 passes through the first fixing frame 241, the first swing arm 245, the main shaft 21, the second swing arm 246 and the second fixing frame 242.

[0210] In some embodiments, the sliding end 2452 of the first swing arm 245 is slidably mounted in the first sliding slot 2413 of the first fixed frame 241 to be slidably connected to the first fixed frame 241. The sliding block 24521 of the sliding end 2452 of the first swing arm 245 is partially located in the guide space of the first sliding slot 2413. The sliding block 24521 cooperates to guide the sliding direction of the sliding end 2452 of the first swing arm 245 relative to the first fixed frame 241. The sliding end 2462 of the second swing arm 246 is slidably mounted in the second sliding slot 2423 of the second fixed frame 242 to be slidably connected to the second fixed frame 242. The sliding block 24621 of the sliding end 2462 of the second swing arm 246 is partially located in the guide space of the second sliding slot 2423. The sliding block 24621 of the sliding end 2462 of the second swing arm 246 is partially located in the guide space of the second sliding slot 2423. The sliding block 24621 of the sliding end 2462 of the second swing arm 246 cooperates to guide the sliding direction of the sliding end 2462 of the second swing arm 246 relative to the second fixed frame 242.

[0211] Please refer to Figure 19 、 Figure 22A as well as Figure 22B , Figure 22A yes Figure 6 The schematic diagram of the cross-sectional structure of the assembly structure of the bottom connecting component 24 and the main shaft 21 is shown along A3-A3. Figure 22B yes Figure 22A The cross section taken along A3-A3 passes through the first fixing frame 241, the first connecting arm 243, the main shaft 21, the second connecting arm 244 and the second fixing frame 242.

[0212] In some embodiments, the first end 2431 of the first connecting arm 243 is rotatably connected to the main shaft 21, and the second end 2432 of the first connecting arm 243 is rotatably connected to the first fixing frame 241. The first end 2441 of the second connecting arm 244 is rotatably connected to the main shaft 21, and the second end 2442 of the second connecting arm 244 is rotatably connected to the second fixing frame 242.

[0213] The first end 2431 of the first connecting arm 243 is rotatably connected to the main shaft 21 through a virtual axis connection. The bottom rotating shaft 2481 passes through the rotating shaft hole 24321 of the second end 2432 of the first connecting arm 243 and passes through the first rotating shaft hole 2411 of the first fixing frame 241 (see Figure 14 ) to plug the second end 2432 of the first connecting arm 243 and the first fixing frame 241, so that the second end 2432 of the first connecting arm 243 is rotatably connected to the first fixing frame 241 through a physical axis connection.

[0214] The first end 2441 of the second connecting arm 244 is rotatably connected to the main shaft 21 through a virtual axis connection. The bottom rotating shaft 2482 passes through the rotating shaft hole 24421 of the second end 2442 of the second connecting arm 244 and passes through the second rotating shaft hole 2421 of the second fixing frame 242 (see Figure 15 ) to plug the second end 2442 of the second connecting arm 244 and the second fixing frame 242, so that the second end 2442 of the second connecting arm 244 is rotatably connected to the second fixing frame 242 through a physical axis connection.

[0215] It is understood that in other embodiments, the first end 2431 of the first connecting arm 243 and / or the first end 2441 of the second connecting arm 244 may also be rotatably connected to the main shaft 21 via a physical axis connection, and this application is not strictly limited to this. In other embodiments, the second end 2432 of the first connecting arm 243 may also be rotatably connected to the first fixing frame 241 via a virtual axis connection; and / or the second end 2442 of the second connecting arm 244 may also be rotatably connected to the second fixing frame 242 via a virtual axis connection, and this application is not strictly limited to this.

[0216] The first mating block 2418 of the first fixing frame 241 is located in the mating space 24331 below the connecting section 2433 in the middle of the first connecting arm 243, and the second mating block 2428 of the second fixing frame 242 is located in the mating space 24431 below the connecting section 2443 in the middle of the second connecting arm 244. In the open state, a gap exists between the upper surface 24181 of the first mating block 2418 and the lower surface of the connecting section 2433 of the first connecting arm 243, and a gap exists between the upper surface 24281 of the second mating block 2428 and the lower surface of the connecting section 2443 of the second connecting arm 244. In the closed state, the upper surface 24181 of the first mating block 2418 contacts or is close to the lower surface of the connecting section 2433 of the first connecting arm 243, and the upper surface 24281 of the second mating block 2428 contacts or is close to the lower surface of the connecting section 2443 of the second connecting arm 244. The first matching block 2418 of the first fixing frame 241 matches with the matching space 24331 of the first connecting arm 243 to limit the rotation angle of the first fixing frame 241 relative to the first connecting arm 243, and the second matching block 2428 of the second fixing frame 242 matches with the matching space 24431 of the second connecting arm 244 to limit the rotation angle of the second fixing frame 242 relative to the second connecting arm 244, so that when in the closed state, the gap between the fixing frames (241, 242) and the connecting arms (243, 244) is small and the matching is tight, so that the structural integrity of the rotating shaft assembly 2 is high.

[0217] Please refer to Figure 20A 、 Figure 20B 、 Figure 22A and Figure 22B In the present application, the first connecting arm 243 and the first swing arm 245 have different axes of rotation relative to the main shaft 21. Specifically, the axis 24310 of the first connecting arm 243 rotating relative to the main shaft 21 is located above the upper surface of the main shaft 21, and the axis 2450 of the first swing arm 245 rotating relative to the main shaft 21 is located below the upper surface of the main shaft 21, so that when the first connecting arm 243 and the first swing arm 245 rotate relative to the main shaft 21, relative sliding and relative rotation occur between the second end 2432 of the first connecting arm 243 and the sliding end 2452 of the first swing arm 245. In the present application, the first fixing frame 241 is rotationally connected to the second end 2432 of the first connecting arm 243 and slidably connected to the sliding end 2452 of the first swing arm 245. Therefore, when the first connecting arm 243 and the first swing arm 245 rotate relative to the main shaft 21, the first fixing frame 241 rotates relative to the second end 2432 of the first connecting arm 243 and slides relative to the sliding end 2452 of the first swing arm 245. In other words, during the relative folding and unfolding of the hinge assembly 2, the first fixing frame 241 rotates relative to the first connecting arm 243 and slides relative to the first swing arm 245.

[0218] Furthermore, the second connecting arm 244 and the second swing arm 246 rotate about different axes relative to the main shaft 21. Specifically, the axis 24430 of the second connecting arm 244 rotating about the main shaft 21 is located above the upper surface of the main shaft 21, while the axis 2460 of the second swing arm 246 rotating about the main shaft 21 is located below the upper surface of the main shaft 21. This allows the second end 2442 of the second connecting arm 244 to slide and rotate relative to the sliding end 2462 of the second swing arm 246 when the second connecting arm 244 and the second swing arm 246 rotate relative to the main shaft 21. In the present application, the second fixing frame 242 is rotationally connected to the second end 2442 of the second connecting arm 244 and slidably connected to the sliding end 2462 of the second swing arm 246. Therefore, when the second connecting arm 244 and the second swing arm 246 rotate relative to the main shaft 21, the second fixing frame 242 rotates relative to the second end 2442 of the second connecting arm 244 and slides relative to the sliding end 2462 of the second swing arm 246. In other words, during the relative folding and unfolding of the hinge assembly 2, the second fixing frame 242 rotates relative to the second connecting arm 244 and slides relative to the second swing arm 246.

[0219] In the present application, the two ends (2431, 2432) of the first connecting arm 243 of the bottom connecting assembly 24 are respectively rotated to connect the main shaft 21 and the first fixed frame 241, forming a connecting rod structure, the rotating end 2451 of the first swing arm 245 is rotated to connect the main shaft 21, and the sliding end 2452 is slidably connected to the first fixed frame 241, forming a connecting rod slider structure; the two ends (2441, 2442) of the second connecting arm 244 are respectively rotated to connect the main shaft 21 and the second fixed frame 242, forming a connecting rod structure, the rotating end 2461 of the second swing arm 246 is rotated to connect the main shaft 21, and the sliding end 2462 is slidably connected to the second fixed frame 242, forming a connecting rod slider structure. The first fixing bracket 241 is used to connect to the first housing 11, and the second fixing bracket 242 is used to connect to the second housing 12. Therefore, the bottom connecting assembly 24 of the rotating shaft assembly 2 connects the first housing 11 and the second housing 12 to the main shaft 21 through a connecting rod structure and a connecting rod slider structure. The number of components is small, the mating relationship and mating position are simple, and the components are easy to manufacture and assemble, which is conducive to mass production. Furthermore, because the main shaft 21 is linked to the first fixing bracket 241 via the first connecting arm 243 and the first swing arm 245, and to the second fixing bracket 242 via the second connecting arm 244 and the second swing arm 246, the motion trajectory of the rotating shaft assembly 2 is accurate, and the rotating shaft assembly 2 has excellent mechanical tensile and compressive resistance.

[0220] In addition, if Figure 20A and Figure 21A As shown, in the open state, the rotating end 2451 of the first swing arm 245 rotates into the main shaft 21, the rotating end 2461 of the second swing arm 246 rotates into the main shaft 21, the sliding end 2452 of the first swing arm 245 slides into the first fixed frame 241, and the sliding end 2462 of the second swing arm 246 slides into the second fixed frame 242. The distance between the first fixed frame 241 and the second fixed frame 242 and the main shaft 21 is small. Figure 20B and Figure 21BAs shown, in the closed state, the rotating end 2451 of the first swing arm 245 partially rotates out of the main shaft 21, the rotating end 2461 of the second swing arm 246 partially rotates out of the main shaft 21, the sliding end 2452 of the first swing arm 245 partially slides out of the first fixed frame 241, and the sliding end 2462 of the second swing arm 246 partially slides out of the second fixed frame 242, and the distance between the first fixed frame 241 and the second fixed frame 242 and the main shaft 21 is large. Therefore, in the open state, the hinge assembly 2 can pull the first shell 11 and the second shell 12 closer through the first fixing frame 241 and the second fixing frame 242 respectively, so that the first shell 11 and the second shell 12 are close to the main shaft 21; in the closed state, the first shell 11 and the second shell 12 are pushed apart through the first fixing frame 241 and the second fixing frame 242 respectively, so that the first shell 11 and the second shell 12 are away from the main shaft 21, so that the structure of the hinge assembly 2 can better adapt to the deformation structure of the screen 200, so as to reduce the risk of pulling or squeezing the screen 200, and improve the reliability of the screen 200 and the electronic device 1000.

[0221] The following describes in detail the structure of each component of the middle connecting assembly 25 and the connection structure between the middle connecting assembly 25 and the main shaft 21 with reference to the accompanying drawings. It is understood that the middle connecting assembly 25 of the present application can be designed with reference to the bottom connecting assembly 24, so it is briefly described below and most of the same content is not repeated.

[0222] Please refer to Figure 23A and Figure 23B , Figure 23A yes Figure 9 The third fixing frame 251 is shown in another structural diagram at another angle. Figure 23B yes Figure 23A The third fixing frame 251 is shown as a schematic structural diagram at another angle. Figure 23B The viewing angles shown are relative to Figure 23A The view shown is flipped left to right.

[0223] In some embodiments, the third fixing frame 251 has a third rotation axis hole 2511 , a third sliding slot 2512 , a fourth arc-shaped slot 2513 and a plurality of fastening holes 2514 .

[0224] Illustratively, the third fixing frame 251 includes at least one third rotating connection portion 2515, with a third rotation axis hole 2511 formed in the third rotating connection portion 2515. The third fixing frame 251 also includes limiting grooves 2516 provided on both sides of the third rotating connection portion 2515 for cooperating with limiting structures of a mechanism connected to the third rotating connection portion 2515 to define the relative position of the mechanism connected to the third rotating connection portion 2515 and the third fixing frame 251.

[0225] The third sliding groove 2512 has two oppositely disposed side walls, which are recessed to form a guide space for the third sliding groove 2512. In other words, the side walls of the third sliding groove 2512 may have a recessed guide space to guide the sliding direction of a structural component mounted in the third sliding groove 2512, thereby facilitating the relative sliding movement between the third fixing frame 251 and the corresponding structural component and achieving higher control accuracy.

[0226] There are two fourth arcuate grooves 2513, and the two fourth arcuate grooves 2513 are formed at the bottom and top of the third fixing frame 251, respectively. One side of the fourth arcuate groove 2513 located at the bottom of the third fixing frame 251 can extend to the bottom surface of the third fixing frame 251, and one side of the fourth arcuate groove 2513 located at the top of the third fixing frame 251 can extend to the top surface of the third fixing frame 251. In some other embodiments, there can also be one fourth arcuate groove 2513, which is formed at the bottom or top of the third fixing frame 251. A plurality of fastening holes 2514 are used to allow fasteners to pass through and are fixedly connected to the first shell 11 through the fasteners (see Figure 3 The plurality of fastening holes 2514 are dispersedly arranged at the bottom, middle and top of the third fixing frame 251 .

[0227] Please refer to Figure 24A and Figure 24B , Figure 24A yes Figure 9 The fourth fixing frame 252 is shown in another structural diagram at another angle. Figure 24B yes Figure 24A The fourth fixing frame 252 is shown as a schematic structural diagram at another angle. Figure 24B The viewing angles shown are relative to Figure 24A The view shown is flipped left to right.

[0228] In some embodiments, the fourth fixing frame 252 has a fourth rotation axis hole 2521 , a fourth sliding slot 2522 , a fifth arc-shaped slot 2523 and a plurality of fastening holes 2524 .

[0229] Illustratively, the fourth fixing frame 252 includes at least one fourth rotation connection portion 2525, with a fourth rotation axis hole 2521 formed in the fourth rotation connection portion 2525. The fourth fixing frame 252 also includes limiting grooves 2516 provided on both sides of the fourth rotation connection portion 2525 for cooperating with limiting structures of a mechanism connected to the fourth rotation connection portion 2525 to define the relative position of the mechanism connected to the fourth rotation connection portion 2525 and the fourth fixing frame 252.

[0230] The fourth sliding groove 2522 has two opposing side walls that are recessed to form a guide space for the fourth sliding groove 2522. In other words, the side walls of the fourth sliding groove 2522 may have a recessed guide space to guide the sliding direction of a structural component mounted in the fourth sliding groove 2522, thereby facilitating the relative sliding movement between the fourth fixing frame 252 and the corresponding structural component and achieving higher control accuracy.

[0231] There are two fifth arcuate grooves 2523, and the two fifth arcuate grooves 2523 are respectively formed at the bottom and top of the fourth fixing frame 252. One side of the fifth arcuate groove 2523 located at the bottom of the fourth fixing frame 252 can extend to the bottom surface of the fourth fixing frame 252, and one side of the fifth arcuate groove 2523 located at the top of the fourth fixing frame 252 can extend to the top surface of the fourth fixing frame 252. In some other embodiments, there can also be one fifth arcuate groove 2523, which is formed at the bottom or top of the fourth fixing frame 252. A plurality of fastening holes 2524 are used to allow fasteners to pass through and are fixedly connected to the second shell 12 through the fasteners (see Figure 3 The plurality of fastening holes 2524 are dispersedly arranged at the bottom, middle and top of the fourth fixing frame 252 .

[0232] See also Figure 25 , Figure 25 yes Figure 9 The third connecting arm 253 is shown as a schematic structural diagram at another angle.

[0233] In some embodiments, the third connecting arm 253 includes a first end 2531 and a second end 2532, both of which are rotating ends. For example, the first end 2531 of the third connecting arm 253 is an arc-shaped arm; the second end 2532 of the third connecting arm 253 is provided with a rotating shaft hole 25321.

[0234] The third connecting arm 253 further includes a connecting section 2533 connected between the first end 2531 and the second end 2532. The provision of the connecting section 2533 makes the structural design of the third connecting arm 253 more flexible and can better meet the connection and shape requirements of the middle connecting assembly 25 and the rotating shaft assembly 2.

[0235] The third connecting arm 253 may further include two limiting blocks 25331, located on either side of the connecting section 2533, for engaging with the limiting slots 2516 of the third fixing frame 251. The number of limiting blocks 25331 may also be one, located on either side of the connecting section 2533, which is not limited in this application.

[0236] The third connecting arm 253 can be an integrally formed structural member to provide greater structural strength. For example, the third connecting arm 253 can be formed using a computer numerical control milling process. In other embodiments, the third connecting arm 253 can also be formed using a metal injection molding process, which is not strictly limited in this embodiment of the present application.

[0237] See also Figure 26 , Figure 26 yes Figure 9 The fourth connecting arm 254 is shown as a schematic structural diagram at another angle.

[0238] In some embodiments, the fourth connecting arm 254 includes a first end 2541 and a second end 2542, both of which are rotating ends. For example, the first end 2541 of the fourth connecting arm 254 is an arc-shaped arm; the second end 2542 of the fourth connecting arm 254 is provided with a rotating shaft hole 25421.

[0239] The fourth connecting arm 254 further includes a connecting section 2543 connected between the first end 2541 and the second end 2542. The provision of the connecting section 2543 makes the structural design of the fourth connecting arm 254 more flexible and can better meet the connection and shape requirements of the middle connecting assembly 25 and the rotating shaft assembly 2.

[0240] The fourth connecting arm 254 may further include two limiting blocks 25431, located on either side of the connecting section 2543, for engaging with the limiting slots 2526 of the fourth fixing bracket 252. The number of limiting blocks 25431 may also be one, located on either side of the connecting section 2543, which is not limited in this application.

[0241] The fourth connecting arm 254 can be an integrally formed structural member to provide greater structural strength. For example, the fourth connecting arm 254 can be formed using a computer numerical control milling process. In other embodiments, the fourth connecting arm 254 can also be formed using a metal injection molding process, which is not strictly limited in this embodiment of the present application.

[0242] Please refer to Figure 9 and Figure 27 , Figure 27 yes Figure 8 The middle connecting assembly 25 is shown with Figure 7A Schematic diagram of the assembly structure of the middle cover 213 of the main shaft 21 is shown.

[0243] In some embodiments, the first end 2531 of the third connecting arm 253 is rotatably connected to the main shaft 21 via a virtual axis connection. The middle rotating shaft 2583 can be inserted into the second end 2532 of the third connecting arm 253 and the third fixing frame 251, so that the second end 2532 of the third connecting arm 253 is rotatably connected to the third fixing frame 251. The limiting block 25331 of the third connecting arm 253 cooperates with the limiting slot 2516 of the third fixing frame 251 to define the relative position of the third connecting arm 253 and the third fixing frame 251. The first end 2541 of the fourth connecting arm 254 is rotatably connected to the main shaft 21 via a virtual axis connection. The middle rotating shaft 2584 can be inserted into the second end 2542 of the fourth connecting arm 254 and the fourth fixing frame 252, so that the second end 2542 of the fourth connecting arm 254 is rotatably connected to the fourth fixing frame 252. The limiting block 25431 of the fourth connecting arm 254 cooperates with the limiting slot 2526 of the fourth fixing frame 252 to define the relative position of the fourth connecting arm 254 and the fourth fixing frame 252 .

[0244] The third swing arm 255 includes a rotating end 2551 and a sliding end 2552, and the fourth swing arm 256 includes a rotating end 2561 and a sliding end 2562. The rotating end 2551 of the third swing arm 255, the second damping assembly 257, and the rotating end 2561 of the fourth swing arm 256 are mounted on the main shaft 21. The rotating ends 2551 and 2561 of the third and fourth swing arms 255 and 256 are both rotatably connected to the main shaft 21 via a physical shaft connection. The second damping assembly 267 connects the rotating end 2551 of the third swing arm 255 and the rotating end 2561 of the fourth swing arm 256 to provide a motion damping force during the movement of the third and fourth swing arms 255 and 256. The sliding end 2552 of the third swing arm 255 is slidably connected to the third fixed frame 251, and the middle rotating shaft 2581 can be inserted into the sliding end 2552 of the third swing arm 255 to move with the sliding end 2552 of the third swing arm 255; the sliding end 2562 of the fourth swing arm 256 is slidably connected to the fourth fixed frame 252, and the middle rotating shaft 2582 can be inserted into the sliding end 2562 of the fourth swing arm 256 to move with the sliding end 2562 of the fourth swing arm 256.

[0245] For example, the structure of the third fixing frame 251 can refer to the structural design of the first fixing frame 241. Specifically, the structure of the third fixing frame 251 for connecting the third connecting arm 253 and the third swing arm 255 can be the same as that of the first fixing frame 241, and the relative positions of these two structures can be the same as or different from those of the first fixing frame 241. The arcuate groove of the third fixing frame 251 can be designed similarly to the first fixing frame 241. Similarly, the structure of the fourth fixing frame 252 can refer to the structural design of the second fixing frame 242.

[0246] The structure of the third swing arm 255 and the structure of the fourth swing arm 256 can be the same as that of the first swing arm 245, so as to use the same material, save the type of material of the rotating shaft assembly 2, and reduce costs. The structure of the third swing arm 255 and the structure of the fourth swing arm 256 can be different from that of the first swing arm 245, and this application does not limit this.

[0247] The structure of the second damping assembly 257 can be the same as that of the first damping assembly 247, and the structure of the multiple middle rotating shafts (2581, 2582, 2583, 2584) can be the same as that of the multiple bottom rotating shafts (2481, 2482, 2483, 2484) to save the type of materials of the rotating shaft assembly 2 and reduce costs.

[0248] Illustratively, the arrangement of the third connecting arm 253, the fourth connecting arm 254, the third swing arm 255, the fourth swing arm 256, and the second damping assembly 257 is symmetrical to the arrangement of the first connecting arm 243, the second connecting arm 244, the first swing arm 245, the second swing arm 246, and the first damping assembly 247. In other embodiments, the above two arrangement positions may be the same or have other arrangement relationships, and this application is not strictly limited to this.

[0249] In the present application, the two ends (2531, 2532) of the third connecting arm 253 of the middle connecting assembly 25 are respectively rotated to connect the main shaft 21 and the third fixed frame 251 to form a connecting rod structure, the rotating end 2551 of the third swing arm 255 is rotated to connect the main shaft 21, and the sliding end 2552 is slidably connected to the third fixed frame 251 to form a connecting rod slider structure; the two ends (2541, 2542) of the fourth connecting arm 254 are respectively rotated to connect the main shaft 21 and the fourth fixed frame 252 to form a connecting rod structure, the rotating end 2561 of the fourth swing arm 256 is rotated to connect the main shaft 21, and the sliding end 2562 is slidably connected to the fourth fixed frame 252 to form a connecting rod slider structure.

[0250] In the present application, the movement of the third fixing frame 251 can be synchronized with the movement of the first fixing frame 241, and the movement of the fourth fixing frame 252 can be synchronized with the movement of the second fixing frame 242, so that the movement of the first shell 11 connected to the third fixing frame 251 and the first fixing frame 241 is stable, and the movement of the second shell 12 connected to the fourth fixing frame 252 and the second fixing frame 242 is stable, and the shell device 100 of the electronic device 1000 has high reliability.

[0251] It is understandable that, in some other embodiments, the component structure of the middle connecting assembly 25 and the connection structure between the middle connecting assembly 25 and the main shaft 21 may also be implemented in other ways, as long as "the movement of the third fixing frame 251 is synchronized with the movement of the first fixing frame 241, and the movement of the fourth fixing frame 252 is synchronized with the movement of the second fixing frame 242".

[0252] The following describes the structure of each component of the top connecting assembly 26 and the connection structure between the top connecting assembly 26 and the main shaft 21 in conjunction with the accompanying drawings. It is understood that the top connecting assembly 26 of the present application can be designed with reference to the bottom connecting assembly 24, so it is briefly described below and most of the same content is not repeated.

[0253] Please refer to Figure 9 and Figure 28 , Figure 28 yes Figure 8 The top connection assembly 26 is shown with Figure 7A A schematic diagram of the assembly structure of the top cover 214 of the main shaft 21 is shown.

[0254] In some embodiments, the fifth connecting arm 263 includes a first end 2631 and a second end 2632; the first end 2631 of the fifth connecting arm 263 can be an arc-shaped arm, rotatably connected to the main shaft 21 via a virtual axis connection; the top rotating shaft 2683 can be inserted into the second end 2632 of the fifth connecting arm 263 and the fifth fixing frame 261, so that the second end 2632 of the fifth connecting arm 263 is rotatably connected to the fifth fixing frame 261. The sixth connecting arm 264 includes a first end 2641 and a second end 2642; the first end 2641 of the sixth connecting arm 264 can be an arc-shaped arm, rotatably connected to the main shaft 21 via a virtual axis connection; the top rotating shaft 2684 can be inserted into the second end 2642 of the sixth connecting arm 264 and the sixth fixing frame 262, so that the second end 2642 of the sixth connecting arm 264 is rotatably connected to the sixth fixing frame 262.

[0255] The fifth swing arm 265 includes a rotating end 2651 and a sliding end 2652, and the sixth swing arm 266 includes a rotating end 2661 and a sliding end 2662. The rotating end 2651 of the fifth swing arm 265, the third damping assembly 267, and the rotating end 2661 of the sixth swing arm 266 are mounted on the main shaft 21. The rotating end 2651 of the fifth swing arm 265 and the rotating end 2661 of the sixth swing arm 266 are both rotatably connected to the main shaft 21 via a physical shaft connection. The third damping assembly 267 connects the rotating end 2651 of the fifth swing arm 265 and the rotating end 2661 of the sixth swing arm 266 to provide a motion damping force during the movement of the fifth and sixth swing arms 265 and 266. The sliding end 2652 of the fifth swing arm 265 is slidably connected to the fifth fixed frame 261, and the top rotating shaft 2683 can be inserted into the sliding end 2652 of the fifth swing arm 265 to move with the sliding end 2652 of the fifth swing arm 265; the sliding end 2662 of the sixth swing arm 266 is slidably connected to the sixth fixed frame 262, and the top rotating shaft 2684 can be inserted into the sliding end 2662 of the sixth swing arm 266 to move with the sliding end 2662 of the sixth swing arm 266.

[0256] For example, the structure of the fifth fixing frame 261 can refer to the structural design of the first fixing frame 241. Specifically, the structure of the fifth fixing frame 261 for connecting the fifth connecting arm 263 and the fifth swing arm 265 can be the same as that of the first fixing frame 241, and the relative positions of these two structures can be the same as or different from those of the first fixing frame 241. The two arcuate grooves of the fifth fixing frame 261 can be designed according to the design of the first fixing frame 241. The structure and position of the third locking block 2617 of the fifth fixing frame 261 for engaging with the first housing 11 can be the same as or different from those of the first fixing frame 241. Similarly, the structure of the sixth fixing frame 262 can refer to the structural design of the second fixing frame 242, and the sixth fixing frame 262 includes a fourth locking block 2627 for engaging with the second housing 12.

[0257] The structures of the fifth connecting arm 263 and the sixth connecting arm 264 can be the same as those of the first connecting arm 243, thereby using the same material, saving the types of materials used in the rotating shaft assembly 2 and reducing costs. The structures of the fifth swing arm 265 and the sixth swing arm 266 can be the same as those of the first swing arm 245, thereby using the same material, saving the types of materials used in the rotating shaft assembly 2 and reducing costs.

[0258] The structure of the third damping component 267 can be the same as that of the first damping component 247, and the structure of the multiple top rotating shafts (2681, 2682, 2683, 2684) can be the same as that of the multiple bottom rotating shafts (2481, 2482, 2483, 2484) to save the types of materials of the rotating shaft component 2 and reduce costs.

[0259] For example, the arrangement of the fifth connecting arm 263, the sixth connecting arm 264, the fifth swing arm 265, the sixth swing arm 266, and the third damping assembly 267 is symmetrical to the arrangement of the first connecting arm 243, the second connecting arm 244, the first swing arm 245, the second swing arm 246, and the first damping assembly 247. In other embodiments, the above two arrangement positions may be the same or have other arrangement relationships, and this application is not strictly limited to this.

[0260] In the present application, the two ends (2631, 2632) of the fifth connecting arm 263 of the top connecting assembly 26 are respectively rotated to connect the main shaft 21 and the fifth fixed frame 261, forming a connecting rod structure, the rotating end 2651 of the fifth swing arm 265 is rotated to connect the main shaft 21, and the sliding end 2652 is slidably connected to the fifth fixed frame 261, forming a connecting rod slider structure; the two ends (2641, 2642) of the sixth connecting arm 264 are respectively rotated to connect the main shaft 21 and the sixth fixed frame 262, forming a connecting rod structure, the rotating end 2661 of the sixth swing arm 266 is rotated to connect the main shaft 21, and the sliding end 2662 is slidably connected to the sixth fixed frame 262, forming a connecting rod slider structure.

[0261] In the present application, the movement of the fifth fixing frame 261 can be synchronized with the movement of the first fixing frame 241, and the movement of the sixth fixing frame 262 can be synchronized with the movement of the second fixing frame 242, so that the movement of the first shell 11 connected to the fifth fixing frame 261 and the first fixing frame 241 is stable, and the movement of the second shell 12 connected to the sixth fixing frame 262 and the second fixing frame 242 is stable, and the shell device 100 of the electronic device 1000 has high reliability.

[0262] It is understandable that, in some other embodiments, the component structure of the top connecting assembly 26 and the connection structure between the top connecting assembly 26 and the main shaft 21 may also be implemented in other ways, as long as "the movement of the fifth fixing frame 261 is synchronized with the movement of the first fixing frame 241, and the movement of the sixth fixing frame 262 is synchronized with the movement of the second fixing frame 242".

[0263] The above mainly introduces the main motion mechanism of the shaft assembly 2. The shaft assembly 2 includes a first support member 22 and a second support member 23. The support members (22, 23) and the main motion mechanism are connected by multiple connecting members (27, 28, 29, 30) so that the support members (22, 23) move relative to each other with the movement of the main motion mechanism. In this application, if Figure 6As shown, the first support member 22 is connected to the bottom connection assembly 24 via a first connection member 27, and the second support member 23 is connected to the bottom connection assembly 24 via a second connection member 28. The following describes the structures of the first connection member 27, the second connection member 28, the first support member 22, the second support member 23, and the connection structure between the first support member 22, the second support member 23 and the bottom connection assembly 24 with reference to the accompanying drawings.

[0264] Please refer to Figure 6 and Figure 12 In some embodiments, the first connecting arm 243 may be provided with a first curved arm 2434. One side of the first curved arm 2434 is connected to the connecting section 2433 in the middle of the first connecting arm 243, and the other side is suspended. The first curved arm 2434 is used to cooperate with the structure of the first connecting member 27 so that the first connecting arm 243 is rotatably connected to the first connecting member 27 and connected to the first support member 22 through the first connecting member 27. The number of first connecting members 27 can be two, and the two first connecting members 27 are arranged opposite to each other. The number of first curved arms 2434 can be two, and the two first curved arms (2434, 2435) are respectively located on both sides of the connecting section 2433 and are arranged opposite to each other. The two first curved arms (2434, 2435) can correspond to the two first connecting members 27 respectively. The first connecting arm 243 can be connected to the first support member 22 through the two first connecting members 27 to increase the connection strength with the first support member 22.

[0265] Please refer to Figure 6 and Figure 13 In some embodiments, the second connecting arm 244 may be provided with a second arc-shaped arm 2444. One side of the second arc-shaped arm 2444 is connected to the connecting section 2443 in the middle of the second connecting arm 244, and the other side is suspended. The second arc-shaped arm 2444 is used to cooperate with the structure of the second connecting member 28 so that the second connecting arm 244 is rotatably connected to the second connecting member 28 and connected to the second support member 23 through the second connecting member 28. The number of the second arc-shaped arms 2444 can be two, and the two second arc-shaped arms (2444, 2445) are respectively located on both sides of the connecting section 2443 and are arranged opposite to each other. The two second arc-shaped arms (2444, 2445) can respectively correspond to the two second connecting members 28, and the second connecting arm 244 can be connected to the second support member 23 through the two second connecting members 28 to increase the connection strength with the second support member 23.

[0266] Please refer to Figure 12 、 Figure 29A and Figure 29B , Figure 29A yes Figure 6 The structural diagram of the first connecting member 27 is shown in FIG. Figure 29B yes Figure 29AThe schematic structural diagram of the first connecting member 27 at another angle is shown. Figure 29B The viewing angles shown are relative Figure 29A The viewing angle shown is rotated 180° counterclockwise.

[0267] In some embodiments, a first arcuate groove 271 and a second arcuate groove 272 are respectively provided at both ends of the first connecting member 27. One side of the first arcuate groove 271 can extend to the end surface of the first connecting member 27, and the openings at both ends of the first arcuate groove 271 can be located on the lower surface of the first connecting member 27. The first arcuate groove 271 is used to cooperate with the structure of the first connecting arm 243 to enable the first connecting member 27 to be rotatably connected to the first connecting arm 243. One side of the second arcuate groove 272 can extend to the end surface of the first connecting member 27, and one end opening of the second arcuate groove 272 can be located on the upper surface of the first connecting member 27. The second arcuate groove 272 is used to cooperate with the structure of the first support member 22 to enable the first connecting member 27 to be rotatably connected to the first support member 22.

[0268] Exemplarily, the center of relative rotation between the first connecting member 27 and the first connecting arm 243 is a first rotation center 273, and the center of relative rotation between the first connecting member 27 and the first support member 22 is a second rotation center 274. Exemplarily, the centerline of the first arcuate groove 271 and the centerline of the second arcuate groove 272 are parallel and spaced apart. The centerline of the first arcuate groove 271 and the centerline of the second arcuate groove 272 may not be on the same straight line, so that the first rotation center 273 and the second rotation center 274 are staggered, and the first connecting arm 243 and the first support member 22 can rotate and move relative to each other. In the present application, the centerline of the first arcuate groove 271 coincides with the first rotation center 273 of the first connecting member 27, and the centerline of the second arcuate groove 272 coincides with the second rotation center 274 of the first connecting member 27.

[0269] For example, the first connecting member 27 may further include a first limiting surface 275 and a second limiting surface 276. An angle may be formed between the first limiting surface 275 and the second limiting surface 276. During movement of the first connecting member 27 relative to the first support member 22, the first limiting surface 275 and the second limiting surface 276 cooperate with the lower surface of the first support member 22 to define the motion trajectory of the first connecting member 27.

[0270] Exemplarily, the first connecting member 27 may also be provided with an avoidance notch 277, which extends to the upper surface of the first connecting member 27, and is used to avoid a mechanism that moves relative to the first connecting arm 243, such as the first support member 22 and the first fixing frame 241, to avoid interfering with the movement of the mechanism, so that the movement of the rotating shaft assembly 2 is smooth and stable.

[0271] It should be understood that the first connecting member 27 is mainly used to provide a rotational connection structure between the first connecting arm 243 and the first support member 22. The first connecting member 27 may also have other implementation structures, which is not strictly limited in this application.

[0272] Please refer to Figure 12 、 Figure 30A and Figure 30B , Figure 30A yes Figure 6 The structural diagram of the second connecting member 28 is shown in FIG. Figure 30B yes Figure 30A The schematic structural diagram of the second connecting member 28 at another angle is shown. Figure 30B The viewing angles shown are relative Figure 30A The viewing angle shown is rotated 180° counterclockwise.

[0273] In some embodiments, a first arcuate groove 281 and a second arcuate groove 282 are respectively provided at both ends of the second connecting member 28. One side of the first arcuate groove 281 can extend to the end surface of the second connecting member 28, and the openings at both ends of the first arcuate groove 281 can be located on the lower surface of the second connecting member 28. The first arcuate groove 281 is used to cooperate with the structure of the second connecting arm 244 to enable the second connecting member 28 to be rotatably connected to the second connecting arm 244. One side of the second arcuate groove 282 can extend to the end surface of the second connecting member 28, and the opening at one end of the second arcuate groove 282 can be located on the upper surface of the second connecting member 28. The second arcuate groove 282 is used to cooperate with the structure of the second support member 23 to enable the second connecting member 28 to be rotatably connected to the second support member 23.

[0274] Exemplarily, the center of relative rotation between the second connecting member 28 and the second connecting arm 244 is a first rotation center 283, and the center of relative rotation between the second connecting member 28 and the second support member 23 is a second rotation center 284. The first rotation center 283 and the second rotation center 284 are staggered so that the second connecting arm 244 and the second support member 23 can rotate and move relative to each other.

[0275] For example, the second connecting member 28 may further have a first limiting surface 245 and a second limiting surface 246. An angle may be formed between the first limiting surface 245 and the second limiting surface 246. During movement of the second connecting member 28 relative to the second support member 23, the first limiting surface 245 and the second limiting surface 246 cooperate with the lower surface of the second support member 23 to define the motion trajectory of the second connecting member 28.

[0276] Exemplarily, the second connecting member 28 may also be provided with an avoidance notch 247, which extends to the upper surface of the second connecting member 28 and is used to avoid a mechanism that moves relative to the second connecting arm 244, such as the second support member 23 and the second fixing frame 242, to avoid interfering with the movement of the mechanism, so that the movement of the rotating shaft assembly 2 is smooth and stable.

[0277] It should be understood that the second connecting member 28 is mainly used to provide a rotational connection structure between the second connecting arm 244 and the second support member 23. The second connecting member 28 may also have other implementation structures, which is not strictly limited in this application.

[0278] In some embodiments, the shape of the first connecting member 27 can be the same as that of the second connecting member 28, so that they can use the same material, save the type of material of the rotating shaft assembly 2, and reduce the cost of the rotating shaft assembly 2. In other embodiments, the shape of the first connecting arm 243 can also be different from that of the second connecting member 28, and this embodiment of the present application is not strictly limited to this.

[0279] See also Figure 31 , Figure 31 yes Figure 6 The structure diagram of the first support member 22 shown is another angle.

[0280] In some embodiments, the first support member 22 includes a first support plate 221, a bottom connecting structure (222, 223, 224), a middle connecting structure (225, 226), and a top connecting structure (227, 228, 229). The bottom connecting structure (222, 223, 224) is fixed to the bottom of the first support plate 221, the middle connecting structure (225, 226) is fixed to the middle of the first support plate 221, and the top connecting structure (227, 228, 229) is fixed to the top of the first support plate 221. Exemplarily, the first support plate 221 can be made of a material with low density and a certain rigidity, such as carbon fiber material. The structural components in the bottom connecting structure (222, 223, 224), the middle connecting structure (225, 226), and the top connecting structure (227, 228, 229) can be made of an integrated structure using a metal injection molding process to have a higher structural strength.

[0281] Illustratively, the bottom connection structure ( 222 , 223 , 224 ) may include a first rotating block 222 , a second rotating block 223 , and a first guide arm 224 .

[0282] The first rotating block 222 includes a baffle 2221 and a second curved arm 2222. One side of the second curved arm 2222 is connected to the baffle 2221, while the other side is suspended in the air. The baffle 2222 supports the second curved arm 2222, thereby increasing the structural strength of the first rotating block 222. One end of the second curved arm 2222 is connected to the first support plate 221, while the other end is suspended in the air.

[0283] For example, the first support member 22 may further include a notch 2223. The notch 2223 is located on the side of the second arc-shaped arm 2222 facing away from the baffle 2221, and is used to avoid the first connecting member 27 from being blocked from rotating relative to the first support member 22, so that the first connecting member 27 can move smoothly and steadily.

[0284] The second rotating block 223 may include a baffle 2231 and a third arc-shaped arm 2232. One side of the third arc-shaped arm 2232 is connected to the baffle 2231, and the other side is suspended. The baffle 2231 is used to support the third arc-shaped arm 2232 to increase the structural strength of the second rotating block 223.

[0285] The fixed end 2241 of the first guide arm 224 is fixed to the first support plate 221, and the rotating end is suspended. The end surface of the fixed end 2241 of the first guide arm 224 is a curved surface. The lower surface of the first support plate 221 is provided with a mounting groove 2242, and the fixed end 2241 of the first guide arm 224 can be installed in the mounting groove 2242, thereby reusing the thickness of the first support plate 221, reducing the space occupied by the first guide arm 224, and making the structure of the rotating shaft assembly 2 compact. In addition, the groove wall of the mounting groove 2242 is a curved surface to fit the end surface of the fixed end 2241 of the first guide arm 224, thereby increasing the connection strength between the first guide arm 224 and the first support plate 221.

[0286] The first guide arm 224 is provided with a first guide slot 2243. The first guide slot 2243 can form a closed structure, allowing a structural member mounted on the first guide slot 2243 to slide back and forth along the extension direction of the first guide slot 2243 within a limited movable space, thereby acting as a position limiter and preventing the structural member from accidentally disengaging from the first guide slot 2243. For example, the extension direction of the first guide slot 2243 can be arc-shaped. Of course, the extension direction of the first guide slot 2243 can also be designed to be a curve, a straight line, a broken line, or a combination of one or more of these.

[0287] It should be understood that the first rotating block 222 and the second rotating block 223 are primarily for providing a rotating connection structure. The first rotating block 222 and the second rotating block 223 may also have other implementation structures. The structures of the two may be the same or different, and this application does not strictly limit this. The first guide arm 224 is primarily for providing a guide slot to guide the movement direction of other structural components. This application may also not have the first guide arm 224, or may use other structures to guide the movement direction of the structural components. This application does not strictly limit this.

[0288] For example, the middle connection structure (225, 226) can be designed with reference to the bottom connection structure (222, 223, 224). The middle connection structure (225, 226) can include a third rotating block 225 for providing a rotating connection structure, and can also include a guide arm 226 for providing a guide slot. The structure of the third rotating block 225 can be designed with reference to the structure of the second rotating block 223; the structure of the guide arm 226 can be designed with reference to the structure of the first guide arm 224, and will not be repeated here.

[0289] For example, the top connection structure (227, 228, 229) can be designed with reference to the bottom connection structure (222, 223, 224). The top connection structure (227, 228, 229) can include two fourth rotating blocks 227 and fifth rotating blocks 228 for providing a rotating connection structure, and can also include a guide arm 229 for providing a guide slot. The structure of the fourth rotating block 227 can be designed with reference to the structure of the first rotating block 222, and the structure of the fifth rotating block 228 can be designed with reference to the structure of the second rotating block 223. The structures of the two rotating blocks (227, 228) can be the same or different, and can be designed with reference to other rotating block structures; the structure of the guide arm 229 can be designed with reference to the structure of the first guide arm 224, and will not be repeated here.

[0290] See also Figure 32 , Figure 32 yes Figure 6 The schematic diagram of the structure of the second support member 23 is shown at another angle.

[0291] In some embodiments, the second support member 23 includes a second support plate 231, a bottom connecting structure (232, 233, 234), a middle connecting structure (235, 236), and a top connecting structure (237, 238, 239). The bottom connecting structure (232, 233, 234) is fixed to the bottom of the second support plate 231, the middle connecting structure (235, 236) is fixed to the middle of the second support plate 231, and the top connecting structure (237, 238, 239) is fixed to the top of the second support plate 231. Exemplarily, the second support plate 231 can be made of a material with low density and a certain rigidity, such as carbon fiber material. The structural components in the bottom connecting structure (232, 233, 234), the middle connecting structure (235, 236), and the top connecting structure (237, 238, 239) can be formed into an integrated structure using a metal injection molding process to have a higher structural strength.

[0292] Illustratively, the bottom connection structure ( 232 , 233 , 234 ) may include a first rotating block 232 , a second rotating block 233 , and a guide arm 234 .

[0293] The first rotating block 232 includes a baffle 2321 and a second curved arm 2322. One side of the second curved arm 2322 is connected to the baffle 2321, while the other side is suspended in the air. The baffle 2322 supports the second curved arm 2322, thereby increasing the structural strength of the first rotating block 232. The first end 23221 of the second curved arm 2322 is connected to the second support plate 231, while the second end 23222 is suspended in the air.

[0294] Exemplarily, the second support member 23 may further include a notch 2323. The notch 2323 is located on the side of the second arc-shaped arm 2322 facing away from the baffle 2321, and is used to avoid the second connecting member 28 from being blocked from rotating relative to the second support member 23, so that the first connecting member 27 can move smoothly and steadily.

[0295] The second rotating block 233 may include a baffle 2331 and a third arc-shaped arm 2332. One side of the third arc-shaped arm 2332 is connected to the baffle 2331, and the other side is suspended. The baffle 2331 is used to support the third arc-shaped arm 2332 to increase the structural strength of the second rotating block 233.

[0296] The fixed end 2341 of the guide arm 234 is fixed to the second support plate 231, while the rotating end is suspended in the air. The end surface of the fixed end 2341 of the guide arm 234 is a curved surface. The lower surface of the second support plate 231 is provided with a mounting groove 2342, into which the fixed end 2341 of the guide arm 234 can be mounted, thereby reusing the thickness of the second support plate 231, reducing the space occupied by the guide arm 234, and making the structure of the rotating shaft assembly 2 compact. In addition, the groove wall of the mounting groove 2342 is a curved surface to fit the end surface of the fixed end 2341 of the guide arm 234, thereby increasing the connection strength between the guide arm 234 and the second support plate 231.

[0297] The guide arm 234 is provided with a guide slot 2343. The guide slot 2343 can form a closed structure, allowing a structural member mounted on the guide slot 2343 to slide back and forth along the extension direction of the guide slot 2343 within a limited movable space, thereby acting as a position limiter and preventing the structural member from accidentally disengaging the guide slot 2343. For example, the extension direction of the guide slot 2343 can be arc-shaped. Of course, the extension direction of the guide slot 2343 can also be designed to be a curve, a straight line, a broken line, or a combination thereof.

[0298] It should be understood that the first rotating block 232 and the second rotating block 233 primarily provide a rotating connection structure. The first rotating block 232 and the second rotating block 233 may also have other implementation structures. The structures of the two may be the same or different, and this application does not strictly limit this. The guide arm 234 primarily provides a guide slot to guide the movement direction of other structural components. This application may also use other structures to guide the movement direction of structural components, and this application does not strictly limit this.

[0299] For example, the middle connection structure (235, 236) can be designed with reference to the bottom connection structure (232, 233, 234). The middle connection structure (235, 236) can include a third rotating block 235 for providing a rotating connection structure, and can also include a guide arm 236 for providing a guide slot. The structure of the third rotating block 235 can be designed with reference to the structure of the second rotating block 233; the structure of the guide arm 236 can be designed with reference to the structure of the guide arm 234, and will not be repeated here.

[0300] For example, the top connection structure (237, 238, 239) can be designed with reference to the bottom connection structure (232, 233, 234). The top connection structure (237, 238, 239) can include two fourth rotating blocks 237 and fifth rotating blocks 238 for providing a rotating connection structure, and can also include a guide arm 239 for providing a guide slot. The structure of the fourth rotating block 237 can be designed with reference to the structure of the first rotating block 232, and the structure of the fifth rotating block 238 can be designed with reference to the structure of the second rotating block 233. The structures of the two rotating blocks (237, 238) can be the same or different, and can be designed with reference to other rotating block structures. The structure of the guide arm 230 can be designed with reference to the structure of the guide arm 234, and will not be repeated here.

[0301] See also Figure 33 , Figure 33 yes Figure 4 The bottom structure of the rotating shaft assembly 2 is shown as a schematic structural diagram at another angle. Figure 33 The perspective is relative Figure 4 The perspective of is flipped left and right. Figure 33 The assembly structure of the first support member 22 , the first connecting member 27 , the bottom connecting assembly 24 , the bottom structure of the main shaft 21 , the second connecting member 28 and the second support member 23 is shown.

[0302] In the present application, both ends of the first connecting member 27 are rotatably connected to the first support member 22 and the first connecting arm 243 respectively, and both ends of the second connecting member 28 are rotatably connected to the second support member 23 and the second connecting arm 244 respectively.

[0303] There may be two first connecting members 27 to increase the connection strength between the first support member 22 and the first connecting arm 243 , and there may be two second connecting members 28 to increase the connection strength between the second support member 23 and the second connecting arm 244 .

[0304] Illustratively, the third arcuate arm 2232 of the first support member 22 is mounted in the third arcuate slot 2414 of the first fixing frame 241, so that the first support member 22 is rotatably connected to the first fixing frame 241 via a virtual axis connection. The third arcuate arm 2332 of the second support member 23 is mounted in the third arcuate slot 2424 of the second fixing frame 242, so that the second support member 23 is rotatably connected to the second fixing frame 242 via a virtual axis connection.

[0305] The connection structure between the first support member 22, the first fixing frame 241, the first connecting member 27 and the first connecting arm 243, and the second support member 23, the second fixing frame 242, the second connecting member 28 and the second connecting arm 244 will be described below with reference to the accompanying drawings.

[0306] Please refer to Figure 34A and Figure 34B , Figure 34A yes Figure 33 The cross-sectional structure diagram of the shaft assembly 2 is shown along A4-A4. Figure 34B yes Figure 34A The cross section taken along line A4-A4 passes through the first support member 22, the first fixing frame 241, the first connecting member 27, the first connecting arm 243, the main shaft 21, the second connecting arm 244, the second connecting member 28, the second fixing frame 242, and the second support member 23.

[0307] In some embodiments, the first curved arm 2434 of the first connecting arm 243 can be mounted in the first curved slot 271 of the first connecting member 27. The first connecting member 27 is rotatably connected to the first connecting arm 243 via a virtual axis connection; that is, the first connecting member 27 is rotatably connected to the first connecting arm 243. The first curved arm 2444 of the second connecting arm 244 can be mounted in the first curved slot 281 of the second connecting member 28. The second connecting member 28 is rotatably connected to the second connecting arm 244 via a virtual axis connection; that is, the second connecting member 28 is rotatably connected to the second connecting arm 244. During the unfolding and folding process of the hinge assembly 2, the first connecting member 27 can rotate relative to the first curved arm 2434 of the first connecting arm 243 via the first curved slot 271, thereby rotating relative to the first connecting arm 243. The second connecting member 28 can rotate relative to the first curved arm 2434 of the second connecting arm 244 via the first curved slot 281, thereby rotating relative to the second connecting arm 244.

[0308] It is understandable that in some other embodiments, the first connecting arm 243 can also be rotatably connected to the first connecting member 27 through a physical axis connection, and / or the second connecting arm 244 can also be rotatably connected to the second connecting member 28 through a physical axis connection. This application does not strictly limit this.

[0309] In the open state, there is a gap between the first connecting member 27 and the first support member 22, and between the second connecting member 28 and the second support member 23. In the closed state, the distance between the first support member 22 and the first connecting member 27 decreases, and the first connecting member 27 rotates relative to the first connecting arm 243. The distance between the second support member 23 and the second connecting member 28 decreases, and the second connecting member 28 rotates relative to the second connecting arm 244. The upper end of the first connecting member 27 is located in the notch 2223 of the first support member 22, preventing collision with the first support member 22 during rotation. The upper end of the second connecting member 28 is located in the notch 2323 of the second support member 23, preventing collision with the second support member 23 during rotation.

[0310] Please refer to Figure 35A and Figure 35B , Figure 35A yes Figure 33 The cross-sectional structure diagram of the shaft assembly 2 is shown along A5-A5. Figure 35B yes Figure 35A The cross section taken along A5-A5 passes through the first support member 22, the first fixing frame 241, the first connecting member 27, the main shaft 21, the second connecting member 28, the second fixing frame 242 and the second support member 23.

[0311] In some embodiments, the second arcuate arm 2222 of the first support member 22 can be mounted in the second arcuate slot 272 of the first connector 27. The first connector 27 is rotatably connected to the first support member 22 via a virtual axis connection; that is, the first connector 27 is rotatably connected to the first support member 22. The second arcuate arm 2322 of the second support member 23 can be mounted in the second arcuate slot 282 of the second connector 28. The second connector 28 is rotatably connected to the second support member 23 via a virtual axis connection; that is, the second connector 28 is rotatably connected to the second support member 23.

[0312] It is understandable that in some other embodiments, the first support member 22 can also be rotatably connected to the first connecting member 27 through a physical axis connection, and / or the second support member 23 can also be rotatably connected to the second connecting member 28 through a physical axis connection. This application does not strictly limit this.

[0313] During the unfolding and folding process of the hinge assembly 2, the first connecting member 27 can rotate relative to the second arcuate arm 2222 of the first support member 22 via the second arcuate slot 272, thereby rotating relative to the first support member 22. This means that the first connecting member 27 and the first support member 22 are rotationally connected. The second connecting member 28 can rotate relative to the second arcuate arm 2322 of the second support member 23 via the second arcuate slot 282, thereby rotating relative to the second support member 23. This means that the second connecting member 28 and the second support member 23 are rotationally connected. For example, when the hinge assembly 2 moves from an open state to a closed state, the first connecting member 27 rotates relative to the first support member 22 by a first angle; the second connecting member 28 also rotates relative to the second support member 23 by a first angle.

[0314] Among them, the connecting end 22221 of the second arc-shaped arm 2222 of the first support member 22 is connected to the first support plate 221 of the first support member 22, and the rotating end 22222 of the second arc-shaped arm 2222 is rotatably connected to the second arc-shaped groove 272. The rotating end 22222 of the second arc-shaped arm 2222 is suspended and extends in the direction away from the main shaft 21, so that during the folding process of the rotating shaft assembly 2, the rotating end 22222 of the second arc-shaped arm 2222 extends into the second arc-shaped groove 272 to increase the connection stability between the first connecting member 27 and the first support member 22.

[0315] Among them, the connecting end 23221 of the second arc-shaped arm 2322 of the second support member 23 is connected to the second support plate 231 of the second support member 23, and the rotating end 23222 of the second arc-shaped arm 2322 is rotatably connected to the second arc-shaped groove 282. The rotating end 23222 of the second arc-shaped arm 2322 is suspended and extends in the direction away from the main shaft 21, so that during the folding process of the rotating shaft assembly 2, the rotating end 23222 of the second arc-shaped arm 2322 extends into the second arc-shaped groove 282 to increase the connection stability between the second connecting member 28 and the second support member 23.

[0316] A second angle may be formed between the first limiting surface 275 and the second limiting surface 276 of the first connecting member 27, and the second limiting angle is complementary to the first angle at which the first support member 22 rotates relative to the first connecting member 27. In the open state of the rotating shaft assembly 2, the first limiting surface 275 is parallel to the lower surface of the first support plate 221 of the first support member 22. In the closed state of the rotating shaft assembly 2, the first connecting member 27 rotates relative to the first support member 22 by the first angle, and the second limiting surface 276 is parallel to the lower surface of the first support plate 221 of the first support member 22. The first limiting surface 275 and the second limiting surface 276 can limit the rotation angle of the first connecting member 27 relative to the first support member 22.

[0317] In some other embodiments, in the open state of the hinge assembly 2, the first limiting surface 275 may also contact the lower surface of the first support plate 221 of the first support member 22, and may also have a small gap with the lower surface of the first support plate 221; in the closed state of the hinge assembly 2, the second limiting surface 276 may also contact the lower surface of the first support plate 221 of the first support member 22, and may also have a small gap with the lower surface of the first support plate 221. The embodiments of the present application are not limited to this.

[0318] A second angle may be formed between the first limiting surface 285 and the second limiting surface 286 of the second connecting member 28, and the second limiting angle is complementary to the first angle at which the second support member 23 rotates relative to the second connecting member 28. In the open state of the rotating shaft assembly 2, the first limiting surface 285 is parallel to the lower surface of the second support plate 231 of the second support member 23. In the closed state of the rotating shaft assembly 2, the second connecting member 28 rotates relative to the second support member 23 by the first angle, and the second limiting surface 286 is parallel to the lower surface of the second support plate 231 of the second support member 23. The first limiting surface 285 and the second limiting surface 286 can function to limit the rotation angle of the second connecting member 28 relative to the second support member 23.

[0319] In some other embodiments, in the open state of the hinge assembly 2, the first limiting surface 285 may also contact the lower surface of the second support plate 231 of the second support member 23, and may also have a small gap with the lower surface of the second support plate 231; in the closed state of the hinge assembly 2, the second limiting surface 286 may also contact the lower surface of the second support plate 231 of the second support member 23, and may also have a small gap with the lower surface of the second support plate 231. The embodiments of the present application are not limited to this.

[0320] Please refer to Figure 36A and Figure 36B , Figure 36A yes Figure 33 The cross-sectional structure diagram of the rotating shaft assembly 2 is shown along A6-A6. Figure 36B yes Figure 36A The cross section taken along A6-A6 passes through the first support member 22, the first fixing frame 241, the main shaft 21, the second fixing frame 242 and the second support member 23.

[0321] In some embodiments, the third arcuate arm 2232 of the first support member 22 is mounted in the third arcuate slot 2414 of the first fixing frame 241. The first support member 22 is rotationally connected to the first fixing frame 241 via a virtual axis connection; that is, the first support member 22 is rotationally connected to the first fixing frame 241. The third arcuate arm 2332 of the second support member 23 is mounted in the third arcuate slot 2424 of the second fixing frame 242. The second support member 23 is rotationally connected to the second fixing frame 242 via a virtual axis connection; that is, the second support member 23 is rotationally connected to the second fixing frame 242.

[0322] Illustratively, the connecting end 22321 of the third arc-shaped arm 2232 of the first support member 22 is connected to the first support plate 221, and the rotating end 22322 of the third arc-shaped arm 2232 is rotatably connected to the third arc-shaped groove 2414. The rotating end 22322 of the third arc-shaped arm 2232 extends away from the main shaft 21 relative to the connecting end 22321, so that during the folding process of the rotating shaft assembly 2, the rotating end 22322 of the third arc-shaped arm 2232 extends into the third arc-shaped groove 2414 to increase the connection stability between the first fixing frame 241 and the first support member 22.

[0323] Exemplarily, the connecting end 23321 of the third arc-shaped arm 2332 of the second support member 23 is connected to the second support plate 231, and the rotating end 23322 of the third arc-shaped arm 2332 is rotatably connected to the third arc-shaped groove 2424. The rotating end 23322 of the third arc-shaped arm 2332 extends away from the main shaft 21 relative to the connecting end 23321, so that during the folding process of the rotating shaft assembly 2, the rotating end 23322 of the third arc-shaped arm 2332 extends into the third arc-shaped groove 2424 to increase the connection stability between the second fixing frame 242 and the second support member 23.

[0324] Please refer to Figures 34A to 36B In the present application, the two ends of the first connecting member 27 are rotatably connected to the first connecting arm 243 and the first support member 22, and the two ends of the second connecting member 28 are rotatably connected to the second connecting arm 244 and the second support member 23. During the relative unfolding and folding process of the hinge assembly 2, the first connecting arm 243 and the first support member 22 rotate relative to each other via the first connecting member 27, and the second connecting arm 244 and the second support member 23 rotate relative to each other via the second connecting member 28.

[0325] In the open state, Figure 34A and Figure 36A As shown, the third arc-shaped arm 2232 of the first support member 22 partially rotates out of the third arc-shaped groove 2414 of the first fixing frame 241, and a gap is formed between the first mating surface 2419 of the first fixing frame 241 and the first support member 22, and a gap is formed between the connecting section 2433 of the first connecting arm 243 and the first support member 22, and the first support member 22 is flattened relative to the main shaft 21; the third arc-shaped arm 2332 of the second support member 23 partially rotates out of the third arc-shaped groove 2424 of the second fixing frame 242, and a gap is formed between the second mating surface 2429 of the second fixing frame 242 and the second support member 23, and a gap is formed between the connecting section 2443 of the second connecting arm 244 and the second support member 23, and the second support member 23 is flattened relative to the main shaft 21.

[0326] In the closed state, Figure 34B as well as Figure 36B As shown, the third arc arm 2232 of the first support member 22 is rotated into the third arc groove 2414 of the first fixing frame 241, the first mating surface 2419 of the first fixing frame 241 is close to the first support member 22, the connecting section 2433 of the first connecting arm 243 is close to the first support member 22, and the first support member 22 is bent relative to the main shaft 21; the third arc arm 2332 of the second support member 23 is rotated into the third arc groove 2424 of the second fixing frame 242, the second mating surface 2429 of the second fixing frame 242 is close to the second support member 23, the connecting section 2443 of the second connecting arm 244 is close to the second support member 23, and the second support member 23 is bent relative to the main shaft 21.

[0327] Specifically, if Figure 36A and Figure 36B As shown, the third arc-shaped arm 2232 of the first support member 22 is located at the end of the first support member 22 away from the main shaft 21, and the third arc-shaped arm 2332 of the second support member 23 is located at the end of the second support member 23 away from the main shaft 21. A first distance is formed between the rotation center of the third arc-shaped arm 2232 of the first support member 22 and the rotation center of the third arc-shaped arm 2332 of the second support member 23. Figure 35A and Figure 35B As shown, the second arcuate arm 2222 of the first support member 22 is located in the middle of the first support member 22, that is, on the side of the third arcuate arm 2232 closer to the main shaft 21. The second arcuate arm 2322 of the second support member 23 is located in the middle of the second support member 23, that is, on the side of the third arcuate arm 2332 closer to the main shaft 21. A second distance is formed between the rotation center of the second arcuate arm 2222 of the first support member 22 and the rotation center of the second arcuate arm 2322 of the second support member 23. When the rotating shaft assembly 2 is closed, the second distance is smaller than the first distance. Therefore, the distance between the side of the first support member 22 farther from the main shaft 21 and the side of the second support member 23 farther from the main shaft 21 is smaller than the distance between the side of the first support member 22 closer to the main shaft 21 and the side of the second support member 23 closer to the main shaft 21. In other words, the first support member 22 and the second support member 23 are farther away from each other in the direction closer to the main shaft 21.

[0328] In the open state, the first support member 22 and the second support member 23 are relatively flat; in the closed state, the first support member 22 and the second support member 23 are separated from each other in the direction close to the main shaft 21, and together with the main shaft 21, they enclose a teardrop-shaped screen space 210. In addition, at some positions of the rotating shaft assembly 2, the structural members of the multiple connecting assemblies (24, 25, 26) of the rotating shaft assembly 2 can also cooperate with the first support member 22, the main shaft 21, and the second support member 23 to jointly enclose a more complete teardrop-shaped screen space 210.

[0329] Please refer to Figure 22A 、 Figure 34A 、 Figure 35A 、 Figure 36A ,as well as Figure 37 , Figure 37 yes Figure 5 Schematic diagram of the connection relationship of the partial structure shown, where: Figure 37 Schematic diagrams showing the connection relationship between the first support member 22, the first fixing frame 241, the first connecting arm 243 and the first connecting member 27, and a schematic diagram showing the connection relationship between the second support member 23, the second fixing frame 242, the second connecting arm 244 and the second connecting member 28 are shown.

[0330] like Figure 22AAs shown, the first fixing frame 241 and the first connecting arm 243 are rotatably connected; Figure 36A As shown, the first support member 22 and the first fixing frame 241 are rotatably connected; Figure 34A and Figure 35A As shown, the two ends of the first connecting member 27 are respectively connected to the first connecting arm 243 and the first supporting member 22. Figure 37 As shown, the four mechanisms of the first support member 22, the first fixing frame 241, the first connecting arm 243, and the first connecting member 27 are respectively rotatably connected to the adjacent mechanisms, together forming a four-bar linkage structure, so that the first fixing frame 241, the first connecting arm 243, and the first connecting member 27 jointly limit the movement of the first support member 22, thereby being able to accurately control the movement trajectory of the first support member 22. In addition, the first connecting arm 243 and the first connecting member 27 rotate relative to each other around the first rotation center 273, and the first support member 22 and the first connecting member 27 rotate relative to each other around the second rotation center 274. The present application can adjust the movement trajectory of the first support member 22 by designing the relative positions of the first rotation center 273 and the second rotation center 274 of the first connecting member 27 to change the shape of the screen space 210. Exemplarily, the two ends of the first connecting member 27 are respectively connected to the first connecting arm 243 and the first support member 22 by means of a virtual axis, and the two ends of the second connecting member 28 are respectively connected to the second connecting arm 244 and the second support member 23 by means of a virtual axis, so as to accurately control the motion trajectory of the first support member 22 and the second support member 23 through a four-bar linkage structure.

[0331] In some other embodiments, the first connecting member 27 can also be connected to the first connecting arm 243 and / or the first support member 22 by means of a physical axis, and the second connecting member 28 can also be rotatably connected to the second connecting arm 244 and / or the second support member 23 by means of a physical axis. This application does not limit this.

[0332] Among them, such as Figure 22A As shown, the second fixing frame 242 and the second connecting arm 244 are rotatably connected; Figure 36A As shown, the second support member 23 is rotatably connected to the second fixing frame 242; Figure 34A and Figure 35A As shown, the two ends of the second connecting member 28 are respectively connected to the second connecting arm 244 and the second supporting member 23. Figure 37As shown, the four mechanisms of the second support member 23, the second fixing frame 242, the second connecting arm 244, and the second connecting member 28 are respectively rotatably connected to the adjacent mechanisms, together forming a four-bar linkage structure, so that the second fixing frame 242, the second connecting arm 244, and the second connecting member 28 jointly limit the movement of the second support member 23, thereby accurately controlling the movement trajectory of the second support member 23. In addition, the second connecting arm 244 and the second connecting member 28 rotate relative to each other around the second rotation center 283, and the second support member 23 and the second connecting member 28 rotate relative to each other around the second rotation center 284. The present application can adjust the movement trajectory of the second support member 23 by designing the relative positions of the first rotation center 283 and the second rotation center 284 of the second connecting member 28 to change the shape of the screen space 210.

[0333] in, Figures 34A to 36B The connection structure between the first support member 22 and the second support member 23 and the first connecting arm 243 and the second connecting arm 244 is mainly illustrated. The connection structure between the first support member 22 and the second support member 23 and the first swing arm 245 and the second swing arm 246 will be briefly described below with reference to the accompanying drawings.

[0334] Please refer to Figure 38A and Figure 38B , Figure 38A yes Figure 33 The cross-sectional structure diagram of the shaft assembly 2 is shown along A7-A7. Figure 38B yes Figure 38A The structure is shown in a schematic diagram when the structure is in a closed state. The cross section taken along A7-A7 passes through the first fixing frame 241, the first swing arm 245, the first guide arm 224 of the first support member 22, the main shaft 21, the second guide arm 234 of the second support member 23, the second swing arm 246, and the second fixing frame 242.

[0335] In some embodiments, the sliding end 2452 of the first swing arm 245 is slidably connected to the first support member 22 . The first guide arm 224 of the first support member 22 can be installed in the first avoidance area 24524 of the sliding end 2452 of the first swing arm 245, and the bottom rotating shaft 2483 is installed in the first guide slot 2243 of the first guide arm 224. The sliding end 2452 of the first guide arm 224 is slidably connected to the first guide slot 2243. The first guide arm 224 can slide relative to the sliding end 2452 of the first swing arm 245 through the first avoidance area 24524. The bottom rotating shaft 2483 can slide in the first guide slot 2243 and along the extension direction of the first guide slot 2243, so that the sliding end 2452 of the first swing arm 245 is slidably connected to the first guide arm 224 and slides along the extension direction of the first guide slot 2243, so that the movement trajectory of the first support member 22 can be controlled by the first guide slot 2243 when the first support member 22 slides relative to the first swing arm 245. At this time, the first avoidance area 24524 can provide space for the first guide arm 224 to move, thereby facilitating the connection structure between the first guide arm 224 and the sliding end 2452 of the first swing arm 245, saving the space occupied by the rotating shaft assembly 2, and facilitating the thinning of the rotating shaft assembly 2. In other embodiments, the sliding end 2452 of the first swing arm 245 can also be slidably connected to the first guide arm 224 through other methods, which is not limited in this application.

[0336] The second guide arm 234 of the second support member 23 can be mounted in the second avoidance area 24624 of the sliding end 2462 of the second swing arm 246, and the bottom rotating shaft 2484 is mounted in the second guide slot 2343 of the second guide arm 234. The second guide arm 234 can pass through the second avoidance area 24624 relative to the sliding end 2462 of the second swing arm 246. The bottom rotating shaft 2484 can slide in the second guide slot 2343 along the extension direction of the second guide slot 2343, so that the second support member 23 is slidably connected to the sliding end 2462 of the second swing arm 246. In this case, the second avoidance area 24624 provides space for the second guide arm 234 to move, thereby facilitating the connection structure between the second guide arm 234 and the sliding end 2462 of the second swing arm 246, saving space occupied by the rotating shaft assembly 2 and facilitating a thinner and lighter rotating shaft assembly 2.

[0337] In this embodiment, the first support member 22 is slidably connected to the sliding end 2452 of the first swing arm 245 and is rotatably connected to the first fixed frame 241. The sliding end 2452 of the first swing arm 245 and the first fixed frame 241 jointly define the movement trajectory of the first support member 22; the second support member 23 is slidably connected to the sliding end 2462 of the second swing arm 246 and is rotatably connected to the second fixed frame 242. The sliding end 2462 of the second swing arm 246 and the second fixed frame 242 jointly define the movement trajectory of the second support member 23.

[0338] Specifically, during the unfolding and folding process of the rotating shaft assembly 2, the first support member 22 moves relative to the main shaft 21 along with the sliding end 2452 of the first swing arm 245 and the first fixed frame 241, and the first support member 22 also moves relative to the sliding end 2452 of the first swing arm 245 and the first fixed frame 241; the second support member 23 moves relative to the main shaft 21 along with the sliding end 2462 of the second swing arm 246 and the second fixed frame 242, and the second support member 23 also moves relative to the sliding end 2462 of the second swing arm 246 and the second fixed frame 242.

[0339] Illustratively, the first guide slot 2243 includes a proximal end 2243a and a distal end 2243b, wherein the proximal end 2243a is closer to the main shaft 21 and the first support plate 221 than the distal end 2243b. The second guide slot 2343 includes a proximal end 2343a and a distal end 2343b, wherein the proximal end 2343a is closer to the main shaft 21 and the second support plate 231 than the distal end 2343b.

[0340] In the open state, Figure 36A as well as Figure 38A As shown, the third arc arm 2232 of the first support member 22 partially rotates out of the third arc groove 2414 of the first fixed frame 241, and a gap is formed between the first matching surface 2419 of the first fixed frame 241 and the first support member 22, and the bottom rotating shaft 2483 slides to the distal end 2243b of the first guide slot 2243 of the first support member 22, and a gap is formed between the connecting section of the first swing arm 245 and the first support member 22, and the first support member 22 is flattened relative to the main shaft 21; the third arc arm 2332 of the second support member 23 partially rotates out of the third arc groove 2424 of the second fixed frame 242, and a gap is formed between the second matching surface 2429 of the second fixed frame 242 and the second support member 23, and the bottom rotating shaft 2484 slides to the distal end 2343b of the second guide slot 2343 of the second support member 23, and a gap is formed between the connecting section 2463 of the second swing arm 246 and the second support member 23, and the second support member 23 is flattened relative to the main shaft 21.

[0341] In the closed state, Figure 36B as well as Figure 38BAs shown, the third arc arm 2232 of the first support member 22 rotates into the third arc groove 2414 of the first fixed frame 241, the first mating surface 2419 of the first fixed frame 241 is close to the first support member 22, the bottom rotating shaft 2483 slides to the proximal end 2243a of the first guide groove 2243 of the first support member 22, the connecting section of the first swing arm 245 is close to the first support member 22, and the first support member 22 is bent relative to the main shaft 21; the third arc arm 2332 of the second support member 23 rotates into the third arc groove 2424 of the second fixed frame 242, the second mating surface 2429 of the second fixed frame 242 is close to the second support member 23, the bottom rotating shaft 2484 slides to the proximal end 2343a of the second guide groove 2343 of the second support member 23, the connecting section 2463 of the second swing arm 246 is close to the second support member 23, and the second support member 23 is bent relative to the main shaft 21.

[0342] The third arcuate arm 2232 is located on the side of the first support plate 221 away from the main shaft 21, and the third arcuate arm 2332 is located on the side of the second support plate 231 away from the main shaft 21. The proximal end 2243a of the first guide groove 2243 is located in the middle of the first support plate 221 or on the side close to the main shaft 21, and the proximal end 2343a of the second guide groove 2343 is located in the middle of the second support plate 231 or on the side close to the main shaft 21. A third distance is formed between the rotation center of the third arcuate groove 2414 of the first fixing frame 241 and the rotation center of the third arcuate groove 2424 of the second fixing frame 242; and a fourth distance is formed between the bottom rotating shaft 2483 and the bottom rotating shaft 2484. In the closed state, the third spacing is smaller than the fourth spacing. Therefore, the spacing between the side of the first support plate 221 away from the main shaft 21 and the side of the second support plate 231 away from the main shaft 21 is smaller than the spacing between the side of the first support plate 221 closer to the main shaft 21 and the side of the second support plate 231 closer to the main shaft 21. In other words, the first support plate 221 and the second support plate 231 are separated from each other in the direction closer to the main shaft 21. Therefore, the first support member 22 and the second support member 23 are separated from each other in the direction closer to the main shaft 21.

[0343] In the closed state, the first support member 22, the main shaft 21, and the second support member 23 of the rotating shaft assembly 2 jointly enclose a teardrop-shaped screen space 210. Furthermore, at some locations of the rotating shaft assembly 2, the structural members of the multiple connecting assemblies (24, 25, 26) of the rotating shaft assembly 2 can also cooperate with the first support member 22, the main shaft 21, and the second support member 23 to jointly enclose a more complete teardrop-shaped screen space 210.

[0344] Please refer to Figure 37 、 Figure 38A as well as Figure 38BIn the present application, the rotating shaft assembly 2 forms a four-bar linkage structure through the first connecting member 27, the first support member 22, the first fixing frame 241, and the first connecting arm 243. The four-bar linkage structure defines the motion trajectory of the first support member 22, allowing the first support member 22 to move as the first connecting arm 243 rotates relative to the main shaft 21. The first swing arm 245 and the first fixing frame 241 also define the motion trajectory of the first support member 22, allowing the first support member 22 to move along the first guide slot 2243 as the first swing arm 245 rotates relative to the main shaft 21. It is understandable that the shape of the first guide slot 2243 and / or the structure of the first connecting member 27 can be designed so that the motion trajectory of the first support member 22 as the first swing arm 245 rotates relative to the main shaft 21 coincides with the motion trajectory of the first support member 22 as the first connecting arm 243 rotates relative to the main shaft 21.

[0345] Furthermore, the rotating shaft assembly 2 forms a four-bar linkage structure through the second connecting member 28, the second support member 23, the second fixing bracket 242, and the second connecting arm 244. The four-bar linkage defines the motion trajectory of the second support member 23, allowing the second support member 23 to move as the second connecting arm 244 rotates relative to the main shaft 21. Furthermore, the second swing arm 246 and the second fixing bracket 242 define the motion trajectory of the second support member 23, allowing the second support member 23 to move along the guide slot 2343 as the second swing arm 246 rotates relative to the main shaft 21. It is understood that the shape of the guide slot 2343 and / or the structure of the second connecting member 28 can be designed so that the motion trajectory of the second support member 23 as the second swing arm 246 rotates relative to the main shaft 21 coincides with the motion trajectory of the second support member 23 as the second connecting arm 244 rotates relative to the main shaft 21.

[0346] In other embodiments, the present application may also define the motion trajectory of the first support member 22 only by a four-bar linkage structure, and / or define the motion trajectory of the second support member 23 only by a four-bar linkage structure. The first connecting arm 243 is rotationally connected to the rotating shaft 21 via a virtual axis, so that the first connecting arm 243 moves smoothly relative to the main shaft 21, thereby ensuring smooth and stable movement of the first support member 22 and / or the second support member 23 attached to the first connecting arm 243.

[0347] The above mainly introduces the connection structure of the first support member 22 and the second support member 23 with the bottom connection assembly 24. The second support member 23 is connected to the bottom connection assembly 24 through the second connection member 28. In this application, Figure 6As shown, the first support member 22 is connected to the bottom connection assembly 24 via a first connection member 27, and the second support member 23 is connected to the bottom connection assembly 24 via a second connection member 28. The following describes the structures of the first connection member 27, the second connection member 28, the first support member 22, the second support member 23, and the connection structure between the first support member 22, the second support member 23 and the bottom connection assembly 24 with reference to the accompanying drawings.

[0348] In the present application, the connection structure of the first support member 22 and the second support member 23 with the middle connection assembly 25 can refer to the connection structure of the first support member 22 and the second support member 23 with the bottom connection assembly 24. For example, the third rotating block 225 in the middle connection structure (225, 226) of the first support member 22 is rotatably connected to the third fixed frame 251, and the guide arm 226 is slidably connected to the sliding end 2552 of the third swing arm 255. The third rotating block 235 in the middle connection structure (235, 236) of the second support member 23 is rotatably connected to the fourth fixed frame 252, and the guide arm 236 is slidably connected to the sliding end 2562 of the fourth swing arm 256. The details are not repeated here.

[0349] In the present application, the connection structure of the first support member 22 and the second support member 23 with the top connection assembly 26 can refer to the connection structure of the first support member 22 and the second support member 23 with the bottom connection assembly 24. For example, the structure of the third connection member 29 can refer to the first connection member 27, and the two ends of the third connection member 29 are respectively connected to the first support member 22 and the fifth connection arm 263; the structure of the fourth connection member 30 can refer to the second connection member 28, and the two ends of the fourth connection member 30 are respectively connected to the second support member 23 and the sixth connection arm 264. The fourth rotating block 227 in the top connecting structure (227, 228, 229) of the first support member 22 is rotatably connected to the third connecting member 29, the fifth rotating block 228 is rotatably connected to the fifth fixed frame 261, and the guide arm 229 is slidably connected to the sliding end 2652 of the fifth swing arm 265. The fourth rotating block 237 in the top connecting structure (237, 238, 239) of the second support member 23 is rotatably connected to the fourth connecting member 30, the fifth rotating block 238 is rotatably connected to the sixth fixed frame 262, and the guide arm 239 is slidably connected to the sliding end 2662 of the sixth swing arm 266. The details are not repeated here.

[0350] Please refer to Figure 3 and Figure 39 , Figure 39 yes Figure 2 The schematic diagram of the partial structure of the electronic device 1000 is shown. Figure 39 The components illustrated in the figure are presented in the form of simple schematic diagrams and do not limit the specific structure of the components.

[0351] In some embodiments, when the electronic device 1000 is in a closed state, the first support member 22 has a first end 22a away from the main shaft 21 and a second end 22b closer to the main shaft 21. The second support member 23 has a first end 23a away from the main shaft 21 and a second end 23b closer to the main shaft 21. The distance between the first end 22a of the first support member 22 and the first end 23a of the second support member 23 is less than the distance between the second end 22b of the first support member 22 and the second end 23b of the second support member 23. The first support member 22, the second support member 23, the main shaft 21, and other structures of the hinge assembly 2 together form a teardrop-shaped screen-accommodating space 210. The screen 200 moves with the first housing 11, the hinge assembly 2, and the second housing 12. The central area of ​​the screen 200 takes on a teardrop shape and is located within the screen-accommodating space 210. The first support member 22 and the second support member 23 automatically move out of the way under the control of the motion mechanism of the hinge assembly 2, and the formed screen space 210 fits the curved shape of the screen 200, which can prevent the screen 200 from being damaged due to the squeezing of the hinge assembly 2, making the screen 200 and the electronic device 1000 more reliable and having a longer service life.

[0352] The above description is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by any person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application; the embodiments of this application and the features of the embodiments can be combined with each other unless there is a conflict. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A foldable electronic device (1000), wherein the electronic device (1000) has an open state and a closed state, and is characterized in that: The electronic device (1000) comprises a housing device (100) and a screen (200), wherein the screen (200) is mounted on the housing device (100); The housing device (100) comprises a first housing (11), a second housing (12) and a rotating shaft assembly (2); the rotating shaft assembly (2) is connected between the first housing (11) and the second housing (12); the first housing (11) and the second housing (12) can be relatively unfolded or folded via the rotating shaft assembly (2); The rotating shaft assembly (2) comprises a main shaft (21), a first fixing frame (241), a second fixing frame (242), a first connecting arm (243) and a second connecting arm (244); The first fixing frame (241) is fixedly connected to the first shell (11), and the second fixing frame (242) is fixedly connected to the second shell (12); The first connecting arm (243) includes a first end (2431) and a second end (2432), wherein the first end (2431) of the first connecting arm (243) is rotatably connected to the main shaft (21), and the second end (2432) of the first connecting arm (243) is rotatably connected to the first fixing frame (241); The second connecting arm (244) includes a first end (2441) and a second end (2442); the first end (2441) of the second connecting arm (244) is rotatably connected to the main shaft (21); and the second end (2442) of the second connecting arm (244) is rotatably connected to the second fixing frame (242); The rotating shaft assembly (2) further comprises a first supporting member (22), a first connecting member (27), a second supporting member (23) and a second connecting member (28); The first support member (22) is rotatably connected to the first fixing frame (241), and the two ends of the first connecting member (27) are rotatably connected to the first support member (22) and the first connecting arm (243) respectively; The second supporting member (23) is rotatably connected to the second fixing frame (242), and both ends of the second connecting member (28) are rotatably connected to the second supporting member (23) and the second connecting arm (244) respectively; The first shell (11), the first support member (22), the main shaft (21), the second support member (23) and the second shell (12) jointly support the screen (200).

2. The electronic device (1000) according to claim 1, characterized in that The rotating shaft assembly (2) further comprises a first swing arm (245) and a second swing arm (246), wherein the first swing arm (245) comprises a rotating end (2451) and a sliding end (2452), wherein the rotating end (2451) of the first swing arm (245) is rotationally connected to the main shaft (21), and the sliding end (2452) of the first swing arm (245) is slidingly connected to the first fixed frame (241); and the second swing arm (246) comprises a rotating end (2461) and a sliding end (2462), wherein the rotating end (2461) of the second swing arm (246) is rotationally connected to the main shaft (21), and the sliding end (2462) of the second swing arm (246) is slidingly connected to the second fixed frame (242).

3. The electronic device (1000) according to claim 1 or 2, characterized in that The rotation center of the relative rotation between the first connecting member (27) and the first supporting member (22) is the first rotation center (273), and the rotation center of the relative rotation between the first connecting member (27) and the first connecting arm (243) is the second rotation center (274). The first rotation center (273) and the second rotation center (274) are staggered.

4. The electronic device (1000) according to claim 3, characterized in that The first connecting arm (243) is provided with a first arc-shaped arm (2434), the first supporting member (22) is provided with a second arc-shaped arm (2222), and the two ends of the first connecting member (27) are respectively provided with a first arc-shaped groove (271) and a second arc-shaped groove (272), the center line of the first arc-shaped groove (271) and the center line of the second arc-shaped groove (272) are parallel and spaced apart, the first arc-shaped arm (2434) is rotatably connected to the first arc-shaped groove (271), and the second arc-shaped arm (2222) is rotatably connected to the second arc-shaped groove (272).

5. The electronic device (1000) according to claim 4, characterized in that The first support member (22) further comprises a first support plate (221), the connecting end (22221) of the second arc-shaped arm (2222) is connected to the first support plate (221), and the rotating end (22222) of the second arc-shaped arm (2222) is rotatably connected to the second arc-shaped groove (272).

6. The electronic device (1000) according to any one of claims 1 to 5, characterized in that The number of the first connecting members (27) is two, and the two first connecting members (27) are arranged opposite to each other.

7. The electronic device (1000) according to any one of claims 1 to 6, characterized in that The first fixing frame (241) is provided with a third arc-shaped groove (2414), and the first supporting member (22) is further provided with a third arc-shaped arm (2232), and the third arc-shaped arm (2232) is installed in the third arc-shaped groove (2414).

8. The electronic device (1000) according to claim 2, characterized in that The sliding end (2452) of the first swing arm (245) is slidably connected to the first support member (22).

9. The electronic device (1000) according to claim 8, characterized in that The first support member (22) further includes a first guide arm (224), the first guide arm (224) is provided with a first guide slot (2243), and the rotating shaft assembly (2) further includes a bottom rotating shaft (2483), the bottom rotating shaft (2483) is connected to the sliding end (2452) of the first swing arm (245) and is installed in the first guide slot (2243).

10. The electronic device (1000) according to any one of claims 1 to 9, characterized in that: When the electronic device (1000) is in an open state, the first support member (22) and the second support member (23) are respectively located on both sides of the main shaft (21), and the first support member (22) and the second support member (23) are flush; When the electronic device (1000) is in a closed state, the first support member (22) and the second support member (23) are folded relative to the main axis (21); the first support member (22) has a first end (22a) away from the main axis (21) and a second end (22b) close to the main axis (21); the second support member (23) has a first end (23a) away from the main axis (21) and a second end (23b) close to the main axis (21); the distance between the first end (22a) of the first support member (22) and the first end (23a) of the second support member (23) is smaller than the distance between the second end (22b) of the first support member (22) and the second end (23b) of the second support member (23).

11. A hinge assembly (2), applied to a foldable electronic device (1000), characterized in that: The rotating shaft assembly (2) comprises a main shaft (21), a first fixing frame (241), a second fixing frame (242), a first connecting arm (243) and a second connecting arm (244); The first connecting arm (243) includes a first end (2431) and a second end (2432), wherein the first end (2431) of the first connecting arm (243) is rotatably connected to the main shaft (21), and the second end (2432) of the first connecting arm (243) is rotatably connected to the first fixing frame (241); The second connecting arm (244) includes a first end (2441) and a second end (2442); the first end (2441) of the second connecting arm (244) is rotatably connected to the main shaft (21); and the second end (2442) of the second connecting arm (244) is rotatably connected to the second fixing frame (242); The rotating shaft assembly (2) further comprises a first supporting member (22), a first connecting member (27), a second supporting member (23) and a second connecting member (28); the first supporting member (22) and the second supporting member (23) are used to support the screen (200) of the electronic device (1000); The first support member (22) is rotatably connected to the first fixing frame (241), and the two ends of the first connecting member (27) are rotatably connected to the first support member (22) and the first connecting arm (243) respectively; The second supporting member (23) is rotatably connected to the second fixing frame (242), and the two ends of the second connecting member (28) are rotatably connected to the second supporting member (23) and the second connecting arm (244) respectively.

12. The shaft assembly (2) according to claim 11, characterized in that: The rotating shaft assembly (2) further comprises a first swing arm (245) and a second swing arm (246), wherein the first swing arm (245) comprises a rotating end (2451) and a sliding end (2452), wherein the rotating end (2451) of the first swing arm (245) is rotationally connected to the main shaft (21), and the sliding end (2452) of the first swing arm (245) is slidingly connected to the first fixed frame (241); and the second swing arm (246) comprises a rotating end (2461) and a sliding end (2462), wherein the rotating end (2461) of the second swing arm (246) is rotationally connected to the main shaft (21), and the sliding end (2462) of the second swing arm (246) is slidingly connected to the second fixed frame (242).

13. The shaft assembly (2) according to claim 11 or 12, characterized in that: The rotation center of the relative rotation between the first connecting member (27) and the first supporting member (22) is the first rotation center (273), and the rotation center of the relative rotation between the first connecting member (27) and the first connecting arm (243) is the second rotation center (274). The first rotation center (273) and the second rotation center (274) are staggered.

14. The shaft assembly (2) according to claim 13, characterized in that: The first connecting arm (243) is provided with a first arc-shaped arm (2434), the first supporting member (22) is provided with a second arc-shaped arm (2222), and the two ends of the first connecting member (27) are respectively provided with a first arc-shaped groove (271) and a second arc-shaped groove (272), the center line of the first arc-shaped groove (271) and the center line of the second arc-shaped groove (272) are parallel and spaced apart, the first arc-shaped arm (2434) is rotatably connected to the first arc-shaped groove (271), and the second arc-shaped arm (2222) is rotatably connected to the second arc-shaped groove (272).

15. The shaft assembly (2) according to claim 14, characterized in that: The first support member (22) further comprises a first support plate (221), the connecting end (22221) of the second arc-shaped arm (2222) is connected to the first support plate (221), and the rotating end (22222) of the second arc-shaped arm (2222) is rotatably connected to the second arc-shaped groove (272).

16. The shaft assembly (2) according to any one of claims 11 to 15, characterized in that: The number of the first connecting members (27) is two, and the two first connecting members (27) are arranged opposite to each other.

17. The shaft assembly (2) according to any one of claims 11 to 16, characterized in that: The first fixing frame (241) is provided with a third arc-shaped groove (2414), and the first supporting member (22) is further provided with a third arc-shaped arm (2232), and the third arc-shaped arm (2232) is installed in the third arc-shaped groove (2414).

18. The shaft assembly (2) according to claim 12, characterized in that: The sliding end (2452) of the first swing arm (245) is slidably connected to the first support member (22).

19. The shaft assembly (2) according to claim 18, characterized in that: The first support member (22) further includes a first guide arm (224), the first guide arm (224) is provided with a first guide slot (2243), and the rotating shaft assembly (2) further includes a bottom rotating shaft (2483), the bottom rotating shaft (2483) is connected to the sliding end (2452) of the first swing arm (245) and is installed in the first guide slot (2243).

20. A housing device (100), characterized in that: The invention comprises a first shell (11), a second shell (12) and a rotating shaft assembly (2) according to any one of claims 11 to 19, wherein a first fixing frame (241) of the rotating shaft assembly (2) is fixedly connected to the first shell (11), and a second fixing frame (242) is fixedly connected to the second shell (12); the first shell (11) and the second shell (12) can be relatively unfolded or relatively folded by the rotating shaft assembly (2).

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