Rotating shaft mechanism and electronic device

Abstract

A rotating shaft mechanism, comprising a base (10) and a connecting assembly (20), wherein the base (10) is provided with a first spiral protrusion (10e); and the connecting assembly (20) comprises a first fixing frame (20c) and a first swing arm (20e), the first fixing frame (20c) being located on one side of the base (10), and the first swing arm (20e) comprising a first rotating portion (21e) and a first sliding portion (22e), the first rotating portion (21e) being rotatably connected to the base (10), and the first rotating portion (21e) being provided with a first spiral groove (213e), an opening of the first spiral groove (213e) being located on a peripheral surface of the first rotating portion (21e), wherein the first spiral protrusion (10e) is in spiral engagement with the first spiral groove (213e), and the first sliding portion (22e) is fixedly connected to the first rotating portion (21e) and is slidably connected to the first fixing frame (20c). During rotation of the first rotating portion (21e) relative to the base (10), the first sliding portion (22e) slides relative to the first fixing frame (20c) in the width direction and the length direction of the first fixing frame (20c). In addition, an electronic device is further comprised.

Description

Rotating shaft mechanism and electronic equipment

[0001] This application claims priority to Chinese Patent Application No. 202510149851.0, filed on February 8, 2025, entitled "Rotating Shaft Mechanism and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electronic equipment technology, and more particularly to a rotating shaft mechanism and an electronic device. Background Technology

[0003] With the advancement of technology, the era of large-screen smart terminals has arrived. Foldable electronic devices are highly favored by users due to their large screens and portability. Currently, electronic devices often use hinge mechanisms to achieve folding and unfolding, and utilize swing arms to connect the connecting blocks and the base. However, the large thickness of the swing arms in the hinge mechanism results in a large hinge mechanism itself, which is not conducive to the design of thinner and lighter electronic devices. Summary of the Invention

[0004] This application provides a hinge mechanism and an electronic device for reducing the thickness of the hinge mechanism, thereby achieving a thinner and lighter design for the electronic device.

[0005] In a first aspect, this application provides a rotating shaft mechanism, including a base and a connecting assembly. The base has a first helical protrusion. The connecting assembly includes a first fixing frame and a first swing arm. The first fixing frame is located on one side of the base. The first swing arm includes a first rotating portion and a first sliding portion. The first rotating portion is rotatably connected to the base. The first rotating portion has a first helical groove, the opening of which is located on the circumferential surface of the first rotating portion. The first helical protrusion helically engages with the first helical groove. The first sliding portion is fixedly connected to the first rotating portion and slidably connected to the first fixing frame.

[0006] During the rotation of the first rotating part relative to the base, the first sliding part slides relative to the first fixed frame along the width and length directions of the first fixed frame.

[0007] The rotating shaft mechanism described in this application adds kinematic coordination between the first fixed frame and the first swing arm. During the rotation of the first swing arm relative to the base, the first swing arm slides relative to the first fixed frame along the length and width directions of the first fixed frame. The first swing arm can serve as the main swing arm of the rotating shaft mechanism to achieve a closed-loop motion. Compared to a traditional main swing arm that engages with the base via a virtual axis, the thickness space occupied by the first swing arm is reduced, thus reducing the thickness space of the rotating shaft mechanism and contributing to the thinner and lighter design of electronic devices.

[0008] In one embodiment, the connecting assembly further includes a first connecting rod, one end of which is rotatably connected to the first fixed frame, and the other end of which is rotatably connected to the first sliding part. The first swing arm achieves a sliding connection with the first fixed frame through the first connecting rod.

[0009] During the rotation of the first swing arm relative to the base, the first rotating part rotates relative to the base, the first helical protrusion slides relative to the first rotating part in the first helical groove, the first swing arm moves relative to the base along the length direction of the base under the action of the first helical protrusion, the first sliding part slides relative to the first fixed frame along the length direction of the first fixed frame, the first connecting rod rotates relative to the first fixed frame under the drive of the first sliding part, thereby driving the first sliding part to slide relative to the first fixed frame along the width direction of the first fixed frame in the first sliding groove, thereby realizing the sliding of the first sliding part relative to the first fixed frame along the length and width directions of the first fixed frame.

[0010] In one embodiment, when the pivot mechanism is in a folded state, the angle between the length direction of the connecting rod and the length direction of the first fixed frame is less than 90 degrees. At this time, the first swing arm, the first connecting rod, and the first fixed frame form a stable anti-drop force transmission path. When the electronic device is dropped, the first connecting rod can restrict the first swing arm from sliding relative to the first fixed frame along the width direction of the first fixed frame. The first fixed frame will not cause the display screen to move towards the base, and the display screen will not interfere with the pivot mechanism and fail, thus improving the drop reliability of the electronic device and ensuring the reliability of its use.

[0011] In one embodiment, the first fixing frame is provided with a first sliding hole, the first sliding hole having an unfolded position and a folded position. Along the length direction of the first fixing frame, the folded position of the first sliding hole is located on one side of the unfolded position of the first sliding hole, and the folded position of the first sliding hole is also located on the side of the unfolded position of the first sliding hole facing the base.

[0012] The first sliding part is provided with a first sliding shaft, which passes through the first sliding hole. When the rotating shaft mechanism is in the unfolded state, the first sliding shaft is located in the unfolded position of the first sliding hole. When the rotating shaft mechanism is in the folded state, the first sliding shaft is located in the folded position of the first sliding hole.

[0013] During the rotation of the first rotating part relative to the base, the first sliding shaft slides relative to the first fixed frame within the first sliding hole. The first swing arm achieves a sliding connection with the first fixed frame through the first sliding shaft and the first sliding hole.

[0014] During the process of switching the pivot mechanism from the unfolded state to the folded state, the first sliding shaft can slide from the unfolded position of the first sliding hole to the folded position of the first sliding hole. The first swing arm can drive the first fixed frame to move relative to the base through the high pair cooperation between the first sliding shaft and the first sliding hole until the first fixed frame moves to the designated design position, so that the pivot mechanism forms a pivot space that can accommodate the display screen, avoids interference between the pivot mechanism and the display screen, and ensures the reliability of the electronic device.

[0015] In one embodiment, the first sliding hole includes a first sliding hole segment and a second sliding hole segment. Along the length direction of the first fixing frame, the second sliding hole segment is located on one side of the first sliding hole segment. The second sliding hole segment is also located on the side of the first sliding hole segment facing the base and is in communication with the first sliding hole segment. The unfolded position of the first sliding hole is located in the first sliding hole segment, and the folded position of the first sliding hole is located in the second sliding hole segment.

[0016] The second sliding hole protrudes toward the base, or the second sliding hole is parallel to the length direction of the first fixing frame.

[0017] When the rotating shaft mechanism is in the folded state, the first sliding shaft is located at the folded position of the first sliding hole. Since the folded position of the first sliding hole protrudes downward toward the base or is parallel to the length direction of the first fixing frame, the folded position of the first sliding hole can restrict the first sliding shaft from moving relative to the first fixing frame along the width direction of the first fixing frame. The folded position of the first sliding hole can act as a drop stop to prevent the rotating shaft mechanism from interfering with the display screen and failing when the electronic device is dropped, thereby improving the drop reliability of the electronic device and ensuring the reliability of the electronic device in use.

[0018] In one embodiment, the connecting assembly further includes a second swing arm. Along the length of the base, the second swing arm is located to one side of the first swing arm. The second swing arm includes a second rotating portion and a second sliding portion. The second rotating portion is rotatably connected to the base. The second sliding portion is slidably connected to the first fixing frame.

[0019] During the rotation of the second rotating part relative to the base, the second sliding part slides relative to the first fixed frame along the width direction of the first fixed frame.

[0020] Since the second rotating part can only rotate relative to the base and cannot move relative to the base along the length direction of the base, and the second swing arm can only move relative to the first fixed frame along the width direction of the first fixed frame, the setting of the second swing arm can restrict the degree of freedom of the first fixed frame to move relative to the base along the length direction of the base, avoid the first fixed frame from driving the display screen to move, and ensure the reliability of the electronic device.

[0021] In one embodiment, the first sliding portion has a first limiting surface. The second sliding portion has a first limiting portion, which is located on the side of the second sliding portion facing the first sliding portion.

[0022] When the rotating shaft mechanism is in a folded state, the first limiting surface is located on the side of the first limiting part away from the base and is disposed opposite to the first limiting part, and is used to limit the sliding distance of the first limiting part relative to the first fixing frame along the width direction of the first fixing frame.

[0023] When the pivot mechanism is in a folded state and a fall occurs, the first limiting surface can restrict the first limiting part from sliding relative to the first fixed frame along the width direction of the first fixed frame. The impact force on the second swing arm can be transmitted to the first swing arm. The first swing arm will not slide relative to the first fixed frame along the width direction of the first fixed frame. The first fixed frame will not drive the display screen to move towards the base. The display screen will not interfere with the pivot mechanism and fail, thereby improving the drop reliability of the electronic device and ensuring the reliability of the electronic device in use.

[0024] In one embodiment, the rotating shaft mechanism further includes a first door panel, which is rotatably connected to the first fixed bracket and slidably and rotatably connected to the first sliding part or the second sliding part.

[0025] In one embodiment, the rotating shaft mechanism includes a first connecting component and a second connecting component. Both the first connecting component and the second connecting component include a first fixing frame and a first swing arm. The first connecting component and the second connecting component are mirror-symmetrical about a plane of symmetry, wherein the plane of symmetry is perpendicular to the length direction of the base.

[0026] Since the first connecting component and the second connecting component are mirror-symmetrical about the plane of symmetry, during the switching process between the unfolded and folded states of the rotating shaft mechanism, the first swing arm of one connecting component moves relative to the base along the positive Y-axis, and the first swing arm of the other connecting component moves relative to the base along the negative Y-axis. Thus, the first connecting component and the second connecting component can restrict the degree of freedom of the first fixing frame to move relative to the base along the length of the base, preventing the first fixing frame from causing the display screen to move and ensuring the reliability of the electronic device.

[0027] In one embodiment, the first fixing frame is provided with a first sliding groove, the first sliding groove having a first limiting groove wall surface, and the included angle between the first limiting groove wall surface and the length direction of the first fixing frame is less than 90 degrees.

[0028] The first sliding part is mounted in the first sliding groove and can slide relative to the first fixing frame along the width and length directions of the first fixing frame within the first sliding groove. The first sliding part has a first mating surface, and the angle between the first mating surface and the length direction of the first sliding part is less than 90 degrees.

[0029] When the rotating shaft mechanism is in the folded state, the wall surface of the first limiting groove is disposed opposite to the first mating surface, and is used to limit the sliding distance of the first sliding part relative to the first fixed frame along the width direction of the first fixed frame.

[0030] When the electronic device is dropped, the wall of the first limiting groove can restrict the first swing arm from sliding relative to the first fixed frame along the width direction of the first fixed frame. The first fixed frame will not cause the display screen to move towards the base, and the display screen will not interfere with the rotating shaft mechanism and fail, thereby improving the drop reliability of the electronic device and ensuring the reliability of the electronic device in use.

[0031] In one embodiment, the connecting assembly further includes a second fixing frame and a third swing arm. The base also has a second helical protrusion. The second fixing frame is located on one side of the base. The third swing arm includes a third rotating part and a third sliding part. The third rotating part is rotatably connected to the base. The third rotating part has a second helical groove, the opening of which is located on the circumferential surface of the third rotating part. The second helical protrusion helically engages with the second helical groove, and the third sliding part is fixedly connected to the second rotating part and slidably connected to the second fixing frame.

[0032] During the rotation of the third rotating part relative to the base, the third sliding part slides relative to the second fixed frame along the width and length directions of the second fixed frame.

[0033] The rotating shaft mechanism described in this application adds a kinematic engagement between the second fixed frame and the second swing arm. During the rotation of the second swing arm relative to the base, the second swing arm slides relative to the second fixed frame along the length and width directions of the second fixed frame. The second swing arm can serve as the main swing arm of the rotating shaft mechanism to achieve a closed-loop motion. Compared to a traditional main swing arm that engages with the base via a virtual axis, the second swing arm occupies less thickness, reducing the thickness of the rotating shaft mechanism and contributing to a thinner and lighter design for electronic devices.

[0034] In one embodiment, the connecting assembly further includes a first rotating shaft and a second rotating shaft. Both the first rotating shaft and the second rotating shaft are mounted on the base, and are spaced apart along the width direction of the base.

[0035] The first rotating part is sleeved on the first rotating shaft and is provided with a first cam part.

[0036] The third rotating part is sleeved on the second rotating shaft and is provided with a second cam part.

[0037] The rotating shaft mechanism further includes a damping assembly. The damping assembly includes a cam support, a fixed support, a first elastic element, and a second elastic element. The cam support is sleeved on the first rotating shaft and the second rotating shaft, and can slide relative to the first rotating shaft and the second rotating shaft, and is located on the same side of the first rotating part and the second rotating part. The cam support has a third cam portion and a fourth cam portion. The third cam portion is located on the side of the cam support facing the first cam portion and abuts against the first cam portion. The third cam portion is located on the side of the cam support facing the second cam portion and abuts against the second cam portion.

[0038] The fixed bracket is sleeved on the first rotating shaft and the second rotating shaft, and is fixed relative to the first rotating shaft and the second rotating shaft. It is located on the side of the cam bracket away from the first rotating part and the second rotating part, and is also spaced apart from the cam bracket.

[0039] The first elastic element is sleeved on the first rotating shaft and abuts against the cam bracket and the fixed bracket.

[0040] The second elastic element is sleeved on the second rotating shaft and abuts between the cam bracket and the fixed bracket.

[0041] When the first swing arm and the third swing arm rotate relative to the base, the first cam portion rotates relative to the third cam portion, and the second cam portion rotates relative to the fourth cam portion. The first cam portion and the second cam portion jointly abut against the cam bracket, so that the cam bracket slides relative to the fixed bracket along the axis of the first rotation axis and the axis of the second rotation axis, so that the first elastic element and the second elastic element undergo elastic deformation or elastic recovery, thereby providing damping force for the rotation of the first swing arm and the third swing arm relative to the base. Users can experience better feel and improve the user experience.

[0042] In one embodiment, the rotating shaft mechanism further includes a synchronization component. The synchronization component includes a synchronization bracket. The synchronization bracket is sleeved on the first rotating shaft and the second rotating shaft, and is fixed relative to the first rotating shaft and the second rotating shaft. It is located on the side of the first rotating part and the second rotating part away from the cam bracket, and also abuts against the first rotating part and the second rotating part.

[0043] The first elastic element and the second elastic element can make the synchronous bracket always abut against the first swing arm and the third swing arm through the cam bracket, so as to ensure the synchronous rotation of the first swing arm and the third swing arm relative to the base and improve the user experience.

[0044] Secondly, this application provides an electronic device including a first housing, a second housing, and a pivot mechanism as described in any one of the above claims, the pivot mechanism being connected between the first housing and the second housing.

[0045] In the electronic device described in this application, the rotating shaft mechanism incorporates a kinematic engagement between the first fixed frame and the first swing arm. During the rotation of the first swing arm relative to the base, the first swing arm slides relative to the first fixed frame along the length and width directions of the first fixed frame. The first swing arm can serve as the main swing arm of the rotating shaft mechanism to achieve a closed-loop motion. Compared to a traditional main swing arm that engages with the base via a virtual axis, the first swing arm occupies less thickness, thus reducing the thickness of the rotating shaft mechanism and contributing to a thinner and lighter design for the electronic device.

[0046] In one embodiment, the electronic device further includes a display screen, which includes a first display portion, a second display portion, and a flexible portion. The first display portion is mounted on the first housing, the second display portion is mounted on the second housing, and the flexible portion is connected between the first display portion and the second display portion and is disposed opposite to the pivot mechanism. Attached Figure Description

[0047] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0048] Figure 1 is a schematic diagram of the electronic device provided in the embodiment of this application in a folded state;

[0049] Figure 2 is a schematic diagram of the electronic device shown in Figure 1 in its unfolded state;

[0050] Figure 3 is a schematic diagram of the rotating shaft mechanism of the electronic device in the electronic device shown in Figure 2 under the first embodiment;

[0051] Figure 4 is a partial structural diagram of the disassembled shaft mechanism shown in Figure 3;

[0052] Figure 5 is a schematic diagram of the base structure in the rotating shaft mechanism shown in Figure 4;

[0053] Figure 6 is an exploded structural diagram of the base shown in Figure 5;

[0054] Figure 7 is a schematic diagram of the assembly structure of the base and connecting components in the rotating shaft mechanism shown in Figure 4;

[0055] Figure 8 is a structural schematic diagram of the connecting component shown in Figure 4;

[0056] Figure 9 is a partial structural schematic diagram of the rotating shaft mechanism shown in Figure 3 in a folded state;

[0057] Figure 10 is a cross-sectional schematic diagram of the rotating shaft mechanism shown in Figure 9;

[0058] Figure 11 is a simplified structural diagram of the rotating shaft mechanism shown in Figure 9;

[0059] Figure 12 is an exploded structural diagram of the first and second swing arms in the connecting assembly shown in Figure 8.

[0060] Figure 13 is a schematic diagram of the damping component in the rotating shaft mechanism shown in Figure 4;

[0061] Figure 14 is a schematic diagram of the assembly structure of the base, connecting components, damping components and synchronization components in the rotating shaft mechanism shown in Figure 4.

[0062] Figure 15 is a structural schematic diagram of the door panel assembly in the pivot mechanism shown in Figure 4;

[0063] Figure 16 is a structural schematic diagram of the door panel assembly shown in Figure 15 from another angle;

[0064] Figure 17 is a partial structural schematic diagram of the rotating shaft mechanism shown in Figure 3 in a folded state;

[0065] Figure 18 is a schematic diagram of the rotating shaft mechanism shown in Figure 17 at another angle;

[0066] Figure 19 is a partial structural schematic diagram of the rotating shaft mechanism of the electronic device in the electronic device shown in Figure 2 under the second embodiment;

[0067] Figure 20 is a simplified structural diagram of the rotating shaft mechanism shown in Figure 19;

[0068] Figure 21 is a partial structural schematic diagram of the rotating shaft mechanism of the electronic device in the electronic device shown in Figure 2 under the third embodiment;

[0069] Figure 22 is a simplified structural diagram of the rotating shaft mechanism shown in Figure 21;

[0070] Figure 23 is a partial structural schematic diagram of the rotating shaft mechanism of the electronic device in the electronic device shown in Figure 1 under the fourth embodiment;

[0071] Figure 24 is a partial structural schematic diagram of the rotating shaft mechanism of the electronic device in the electronic device shown in Figure 2 under the fourth embodiment;

[0072] Figure 25 is a schematic diagram of the rotating shaft mechanism shown in Figure 24 at another angle;

[0073] Figure 26 is a partial structural schematic diagram of the rotating shaft mechanism of the electronic device in the electronic device shown in Figure 2 under the fifth embodiment;

[0074] Figure 27 is a simplified structural diagram of the rotating shaft mechanism of the electronic device in the electronic device shown in Figure 2 under the sixth embodiment. Detailed Implementation

[0075] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0076] Please refer to Figures 1 and 2. Figure 1 is a structural schematic diagram of the electronic device 1000 provided in the embodiment of this application in a folded state, and Figure 2 is a structural schematic diagram of the electronic device 1000 shown in Figure 1 in an unfolded state.

[0077] The electronic device 1000 can be a foldable electronic product such as a mobile phone, tablet computer, personal computer, multimedia player, e-book reader, laptop computer, in-vehicle device, or wearable device. In this embodiment, the electronic device 1000 is a foldable mobile phone. That is, the electronic device 1000 is a mobile phone that can switch between a folded state and an unfolded state.

[0078] For ease of description, the width direction of the electronic device 1000 shown in Figure 1 is defined as the X-axis, the length direction as the Y-axis, and the thickness direction as the Z-axis. The X-axis, Y-axis, and Z-axis are mutually perpendicular. For example, the extension direction of the rotation axis of the electronic device 1000 is parallel to the Y-axis. That is, the electronic device 1000 can be relatively unfolded or folded around the Y-axis.

[0079] It should be noted that the terms "parallel" and "perpendicular" used in the embodiments of this application to describe relative positional relationships are relative to the current technological level, and not absolute or strict definitions in a mathematical sense. Slight deviations are permissible; approximations of parallelism and perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

[0080] In Figure 1, the electronic device 1000 is in a folded state. In this state, the electronic device 1000 has a smaller dimension along the X-axis, making it easy to carry. In Figure 2, the electronic device 1000 is in an unfolded state. For example, the unfolding angle of the electronic device 1000 in Figure 2 is 180 degrees. In other words, the electronic device 1000 in Figure 1 is in a flattened state. In this state, the electronic device 1000 has a larger dimension along the X-axis, providing a larger display area.

[0081] It should be noted that the angles illustrated in the embodiments of this application are allowed to have slight deviations. For example, the unfolding angle of the electronic device 1000 shown in Figure 2 is 180 degrees, which means that the unfolding angle of the electronic device 1000 can be 180 degrees, or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees, etc. The angles illustrated in the following text can be understood in the same way.

[0082] It should be understood that the electronic device 1000 shown in the embodiments of this application is a terminal capable of folding once. In some other embodiments, the electronic device 1000 may also be a terminal capable of folding multiple times (more than twice). In this case, the electronic device 1000 may include multiple parts, and two adjacent parts may be folded relatively close to each other until the electronic device 1000 is in a folded state, and two adjacent parts may also be unfolded relatively away from each other until the electronic device 1000 is in an unfolded state.

[0083] Electronic device 1000 includes an electronic device 100 and a display screen 200, the display screen 200 being mounted on the electronic device 100. The display screen 200 includes a display surface 201 facing away from the electronic device 100, the display surface 201 being used to display information such as text, images, or video. In this embodiment, the display screen 200 includes a first display portion 210, a second display portion 220, and a flexible portion 230, the flexible portion 230 being connected between the first display portion 210 and the second display portion 220. The flexible portion 230 is bendable about the Y-axis.

[0084] As shown in Figure 1, when the electronic device 1000 is in a folded state, both the electronic device 100 and the display screen 200 are folded, with the first display portion 210 and the second display portion 220 positioned opposite each other, and the bendable portion 230 bent. At this time, the exposed area of ​​the display screen 200 is relatively small, which greatly reduces the probability of damage to the display screen 200, achieving effective protection for the display screen 200.

[0085] As shown in Figure 2, when the electronic device 1000 is in a flattened state, both the electronic device 100 and the display screen 200 are flattened. The first display portion 210 and the second display portion 220 are relatively flattened, while the flexible portion 230 remains flat without bending. At this time, the angles between the first display portion 210 and the second display portion 220, the angle between the first display portion 210 and the flexible portion 230, and the angle between the second display portion 220 and the flexible portion 230 are all 180 degrees. The display screen 200 has a large display area, enabling the electronic device 1000 to display on a large screen and improving the user experience.

[0086] It should be understood that the electronic device 1000 shown in this embodiment is folded inwards, and when the electronic device 1000 is in the folded state, the display screen 200 is located inside the electronic device 100. In some other embodiments, the electronic device 1000 may also be folded outwards, and when the electronic device 1000 is in the folded state, the display screen 200 is located outside the electronic device 100.

[0087] The electronic device 100 includes a first housing 110, a second housing 120, and a pivot mechanism 130. The pivot mechanism 130 is connected between the first housing 110 and the second housing 120 to achieve a rotatable connection between them. Specifically, the first housing 110 carries a first display portion 210, and the second housing 120 carries a second display portion 220. In other words, the first display portion 210 is mounted on the first housing 110, and the second display portion 220 is mounted on the second housing 120. The pivot mechanism 130 is disposed opposite to the flexible portion 230.

[0088] The first housing 110 and the second housing 120 can rotate relative to each other via the pivot mechanism 130, allowing the electronic device 100 to switch between a folded state and an unfolded state. Specifically, the first housing 110 and the second housing 120 can rotate relative to each other to be positioned opposite each other, so that the electronic device 100 is in a folded state, as shown in Figure 1. At this time, the pivot mechanism 130 is in a folded state. The first housing 110 and the second housing 120 can also rotate relative to each other to be relatively flattened, so that the electronic device 1000 is in a flattened state, as shown in Figure 2. At this time, the included angle between the first housing 110 and the second housing 120 is 180 degrees, and the pivot mechanism 130 is in a flattened state.

[0089] Currently, electronic devices 1000 often employ a pivot mechanism 130 to achieve folding, unfolding, and hovering, and utilize the swing arm of the pivot mechanism 130 to connect the connecting block and the base, thereby achieving a rotational connection between the first housing 110 and the second housing 120. However, the main swing arm often achieves virtual shaft engagement with the base through a sliding groove. The portion of the main swing arm that engages with the sliding groove of the base is relatively thick, requiring the main swing arm to occupy a large thickness space, resulting in a relatively large thickness of the pivot mechanism 130, which is detrimental to the slim and lightweight design of the electronic device 1000.

[0090] Next, the structure of the rotating shaft mechanism 130 in the electronic device 1000 shown in the embodiments of this application will be described.

[0091] Please refer to Figures 3 and 4. Figure 3 is a structural schematic diagram of the rotating shaft mechanism 130 of the electronic device 100 in the electronic device 1000 shown in Figure 2 under the first embodiment. Figure 4 is a partial structural schematic diagram of the rotating shaft mechanism 130 shown in Figure 3 after disassembly.

[0092] The pivot mechanism 130 includes a base 10, a connecting assembly 20, a damping assembly 30, a synchronization assembly 40, and a door panel assembly 50. The connecting assembly 20, damping assembly 30, and synchronization assembly 40 are mounted on the base 10. The base 10 extends along the Y-axis. The connecting assembly 20 is rotatably and slidably connected to the base 10 and can be folded or unfolded relative to the base 10. The damping assembly 30 and synchronization assembly 40 are both mounted on the inner side of the base 10. The door panel assembly 50 is rotatably and slidably connected to the connecting assembly 20 and can be folded or unfolded relative to the base 10 under the influence of the connecting assembly 20.

[0093] When the pivot mechanism 130 is in the folded state, both the connecting assembly 20 and the door panel assembly 50 are in the folded state. When the pivot mechanism 130 is in the unfolded state, both the connecting assembly 20 and the door panel assembly 50 are in the unfolded state. During the transition of the pivot mechanism 130 from the folded state to the unfolded state, both the connecting assembly 20 and the door panel assembly 50 also transition from the unfolded state to the folded state.

[0094] The connecting assembly 20 includes a first rotating shaft 20a, a second rotating shaft 20b, a first fixed frame 20c, a second fixed frame 20d, a first swing arm 20e, a third swing arm 20f, a second swing arm 20g, a fourth swing arm 20h, a first connecting rod 20i, and a second connecting rod 20j. Both the first rotating shaft 20a and the second rotating shaft 20b are mounted on the base 10. Along the width direction of the base 10, the first rotating shaft 20a and the second rotating shaft 20b are parallel and spaced apart, and the axis of the first rotating shaft 20a and the axis of the second rotating shaft 20b are both parallel to the Y-axis direction. For example, both the first rotating shaft 20a and the second rotating shaft 20b are circular shafts.

[0095] The first fixing frame 20c is located on one side of the base 10 and is fixedly connected to the first housing 110. The second fixing frame 20d is located on one side of the base 10 and is fixedly connected to the second housing 120. When the rotating shaft mechanism 130 is in the unfolded state, the first fixing frame 20c is located on one side of the base 10 and is spaced apart from the base 10, and the second fixing frame 20d is located on the other side of the base 10 and is spaced apart from the base 10. For example, when the rotating shaft mechanism 130 is in the unfolded state, the first fixing frame 20c is located on the right side of the base 10, and the second fixing frame 20d is located on the left side of the base 10. The length directions of both the first fixing frame 20c and the second fixing frame 20d are parallel to the Y-axis direction.

[0096] The first swing arm 20e is rotatably connected to the base 10 and slidably connected to the first fixed frame 20c. Specifically, the first swing arm 20e is sleeved on the first rotating shaft 20a, and the rotational connection between the first swing arm 20e and the base 10 is achieved through the first rotating shaft 20a. The first swing arm 20e can rotate relative to the base 10 about the axis of the first rotating shaft 20a. That is, the rotation center of the first swing arm 20e relative to the base 10 is the axis of the first rotating shaft 20a. The first swing arm 20e can slide relative to the first fixed frame 20c along the width direction (X-axis direction in the figure) and the length direction (Y-axis direction in the figure).

[0097] The third swing arm 20f is rotatably connected to the base 10 and slidably connected to the second fixed frame 20d. Specifically, the third swing arm 20f is sleeved on the second rotating shaft 20b, and the rotational connection between the third swing arm 20f and the base 10 is achieved through the second rotating shaft 20b. The third swing arm 20f can rotate relative to the base 10 about the axis of the second rotating shaft 20b. That is, the rotation center of the third swing arm 20f relative to the base 10 is the axis of the second rotating shaft 20b. The third swing arm 20f can slide relative to the second fixed frame 20d along the width direction (X-axis direction in the diagram) and the length direction (Y-axis direction in the diagram).

[0098] Along the Y-axis, the second swing arm 20g is located on one side of the first swing arm 20e, rotatably connected to the base 10, and slidably connected to the first fixed frame 20c. Specifically, the second swing arm 20g is sleeved on the first rotating shaft 20a, and the rotational connection between the second swing arm 20g and the base 10 is achieved through the first rotating shaft 20a. The second swing arm 20g can rotate relative to the base 10 about the axis of the first rotating shaft 20a. That is, the rotation center of the second swing arm 20g relative to the base 10 is the axis of the first rotating shaft 20a. The second swing arm 20g can slide relative to the first fixed frame 20c along the width direction of the first fixed frame 20c.

[0099] Along the Y-axis, the fourth swing arm 20h is located to one side of the third swing arm 20f, rotatably connected to the base 10, and slidably connected to the second fixed frame 20d. Specifically, the fourth swing arm 20h is sleeved on the second rotating shaft 20b, and the rotational connection between the fourth swing arm 20h and the base 10 is achieved through the second rotating shaft 20b. The fourth swing arm 20h can rotate relative to the base 10 about the axis of the second rotating shaft 20b. That is, the rotation center of the fourth swing arm 20h relative to the base 10 is the axis of the second rotating shaft 20b. The fourth swing arm 20h can slide relative to the second fixed frame 20d along the width direction of the second fixed frame 20d.

[0100] The first connecting rod 20i and the first fixed frame 20c are located on the same side of the base 10. One end of the first connecting rod 20i is rotatably connected to the first fixed frame 20c, and the other end is rotatably connected to the first swing arm 20e. The second connecting rod 20j and the second fixed frame 20d are located on the same side of the base 10. One end of the second connecting rod 20j is rotatably connected to the second fixed frame 20d, and the other end is rotatably connected to the third swing arm 20f. The first swing arm 20e is slidably connected to the first fixed frame 20c via the first connecting rod 20i. The third swing arm 20f is slidably connected to the second fixed frame 20d via the second connecting rod 20j.

[0101] When the connecting component 20 switches between a folded state and an unfolded state, the first fixing frame 20c, the first swing arm 20e, and the second swing arm 20g rotate relative to the base 10 in a first direction, while the second fixing frame 20d, the third swing arm 20f, and the fourth swing arm 20h rotate relative to the base 10 in a second direction, which is opposite to the first direction.

[0102] For example, when the connecting assembly 20 switches from a folded state to an unfolded state, the first fixing frame 20c, the first swing arm 20e, and the second swing arm 20g rotate clockwise relative to the base 10, while the second fixing frame 20d, the third swing arm 20f, and the fourth swing arm 20h rotate counterclockwise relative to the base 10. When the connecting assembly 20 switches from an unfolded state to a folded state, the first fixing frame 20c, the first swing arm 20e, and the second swing arm 20g rotate counterclockwise relative to the base 10, while the second fixing frame 20d, the third swing arm 20f, and the fourth swing arm 20h rotate clockwise relative to the base 10.

[0103] It should be noted that the rotating shaft mechanism 130 shown in Figure 4 only shows one connecting component 20. In reality, the rotating shaft mechanism 130 may include multiple (two or more) connecting components 20, which may be arranged at intervals along the Y-axis. These multiple connecting components 20 may be identical or similar components, symmetrical or partially symmetrical structures, or different structures. For example, the basic structure of each component in the multiple connecting components 20, the connection relationships between components, and the connection relationships between components and other components can all refer to the relevant design of the connecting components 20 described below, but the detailed structure or positional arrangement of the components may differ. The first fixing frame 20c of the multiple connecting components 20 may be an independent structural member or multiple parts of a single integrated structural member. And / or, the second fixing frame 20d of the multiple connecting components 20 may be an independent structural member or multiple parts of a single integrated structural member.

[0104] The damping component 30 is sleeved on the first rotating shaft 20a and the second rotating shaft 20b, and is located on the side of the first swing arm 20e opposite to the second swing arm 20g, and on the side of the third swing arm 20f opposite to the fourth swing arm 20h, and also abuts against the first swing arm 20e and the third swing arm 20f. When the rotating shaft mechanism 130 is in a folded or flattened state, and when switching between the folded and flattened states, the damping component 30 provides damping force. During the use of the electronic device 1000, such as when the electronic device 1000 is in a folded or flattened state, and when switching between the folded and flattened states, the user can clearly feel the damping force provided by the damping component 30, and the user can experience a better feel, thereby improving the user experience.

[0105] The damping assembly 30 includes a cam support 30a, a fixed support 30b, a first elastic element 30c, and a second elastic element 30d. The cam support 30a is sleeved on the first rotating shaft 20a and the second rotating shaft 20b, and is slidable relative to the first rotating shaft 20a and the second rotating shaft 20b. It is located on the same side of the first swing arm 20e and the third swing arm 20f, and also abuts against the first swing arm 20e and the third swing arm 20f. The fixed support 30b is sleeved on the first rotating shaft 20a and the second rotating shaft 20b, and is fixed relative to the first rotating shaft 20a and the second rotating shaft 20b. It is located on the side of the cam support 30a away from the first swing arm 20e and the third swing arm 20f, and is spaced apart from the cam support 30a. The first elastic element 30c is sleeved on the first rotating shaft 20a, located between the cam support 30a and the fixed support 30b, and abuts against the cam support 30a and the fixed support 30b. The second elastic element 30d is sleeved on the second rotating shaft 20b and located between the cam support 30a and the fixed support 30b, abutting against the cam support 30a and the fixed support 30b. The first elastic element 30c and the second elastic element 30d are spaced apart and opposite to each other along the width direction of the base 10. The elastic deformation direction of the first elastic element 30c and the elastic deformation direction of the second elastic element 30d are both parallel to the Y-axis direction. For example, both the first elastic element 30c and the second elastic element 30d are springs.

[0106] It should be noted that the rotating shaft mechanism 130 shown in Figure 4 only illustrates one damping component 30. In reality, the rotating shaft mechanism 130 may include multiple damping components 30, which may be arranged at intervals along the Y-axis. The multiple connecting components 20 may be identical or similar components, symmetrical or partially symmetrical structures, or different structures. For example, the basic structure of each component in the multiple connecting components 20, the connection relationships between components, and the connection relationships between components and other components can all refer to the relevant design of the damping component 30 described below, but the detailed structural features or positional arrangement of the components may differ.

[0107] The synchronization component 40 is sleeved on the first rotating shaft 20a and the second rotating shaft 20b, and is located between the first swing arm 20e and the second swing arm 20g, and between the third swing arm 20f and the fourth swing arm 20h, and also abuts against the first swing arm 20e and the third swing arm 20f. When the rotating shaft mechanism 130 switches between a folded state and a flattened state, the synchronization component 40 can ensure the synchronous rotation of each component in the rotating shaft mechanism 130. During the user's use of the electronic device 1000, such as when the electronic device 1000 switches between a folded state and a flattened state, the synchronization component 40 can ensure the synchronous rotation of the first housing 110 and the second housing 120, improving the user experience.

[0108] The synchronization component 40 includes a synchronization bracket 41, which is sleeved on the first rotating shaft 20a and the second rotating shaft 20b, and fixed relative to the first rotating shaft 20a and the second rotating shaft 20b. It is located on the side of the first swing arm 20e and the third swing arm 20f facing away from the cam bracket 30a, and also abuts against the first swing arm 20e and the third swing arm 20f. Specifically, the synchronization bracket 41 is located between the first swing arm 20e and the second swing arm 20g, and between the third swing arm 20f and the fourth swing arm 20h.

[0109] It should be noted that the rotating shaft mechanism 130 shown in Figure 4 only illustrates one synchronization component 40. In reality, the rotating shaft mechanism 130 may include multiple synchronization components 40, which may be arranged at intervals along the Y-axis. These multiple synchronization components 40 may be identical or similar components, symmetrical or partially symmetrical structures, or different structures. For example, the basic structure of each component in the multiple synchronization components 40, the connection relationships between components, and the connection relationships between components and other components can all refer to the relevant design of the synchronization components 40 described below, but the detailed structural features or positional arrangement of the components may differ.

[0110] The door panel assembly 50 is slidably and rotatably connected to the first fixing frame 20c, the second fixing frame 20d, the second swing arm 20g, and the fourth swing arm 20h. The door panel assembly 50 includes a first door panel 50a and a second door panel 50b. The first door panel 50a is located on the same side of the base 10 as the first fixing frame 20c, and is slidably and rotatably connected to both the first fixing frame 20c and the second swing arm 20g. The second door panel 50b is located on the same side of the base 10 as the second fixing frame 20d, and is slidably and rotatably connected to both the second fixing frame 20d and the fourth swing arm 20h.

[0111] In some other embodiments, the first door panel 50a may not be slidably and rotatably connected to the second swing arm 20g, but may be slidably and rotatably connected to the first swing arm 20e, and / or the second door panel 50b may not be slidably and rotatably connected to the fourth swing arm 20h, but may be slidably and rotatably connected to the third swing arm 20f.

[0112] Please refer to Figure 5, which is a structural schematic diagram of the base 10 in the rotating shaft mechanism 130 shown in Figure 4.

[0113] The base 10 is provided with a first mounting groove 10a, a second mounting groove 10b, a third mounting groove 10c, and a fourth mounting groove 10d. The openings of the first mounting groove 10a, the second mounting groove 10b, the third mounting groove 10c, and the fourth mounting groove 10d are all located on the top surface 101 of the base 10. The first mounting groove 10a, the second mounting groove 10b, the third mounting groove 10c, and the fourth mounting groove 10d are all recessed from the top surface 101 of the base 10 towards the bottom surface 102.

[0114] It should be noted that the directional terms such as "top," "bottom," "left," and "right" used in the description of the electronic device 1000 in this application embodiment are mainly based on the orientation of the electronic device 1000 shown in the accompanying drawings. "Top" refers to the positive Z-axis direction, "bottom" refers to the negative Z-axis direction, "right" refers to the positive X-axis direction, and "left" refers to the negative X-axis direction. These terms do not constitute a limitation on the orientation of the electronic device 1000 in actual application scenarios.

[0115] Both the first mounting groove 10a and the third mounting groove 10c are located on the right side of the base 10 and both penetrate the right side surface 103 of the base 10. The first mounting groove 10a includes two first groove sidewalls (not shown) and a first groove bottom wall (not shown). Along the length direction of the first mounting groove 10a (the Y-axis direction in the figure), the two first groove sidewalls are spaced apart and opposite to each other. The first groove bottom wall connects between the two first groove sidewalls. Along the length direction of the base 10 (the Y-axis direction in the figure), the third mounting groove 10c is located on one side of the first mounting groove 10a and is spaced apart from the first mounting groove 10a. In some other embodiments, the first mounting groove 10a and / or the third mounting groove 10c may not penetrate the right side surface 103 of the base 10.

[0116] It should be noted that the "and / or" mentioned in the embodiments of this application refers to both "and" and "or". For example, "and / or" includes three cases: only one exists, only one exists, and both exist simultaneously. The following description of "and / or" can be understood in the same way.

[0117] Both the second mounting groove 10b and the fourth mounting groove 10d are located on the left side of the base 10 and both penetrate the left side surface 104 of the base 10. Along the width direction of the base 10 (X-axis direction in the figure), the second mounting groove 10b and the first mounting groove 10a are spaced apart and opposite to each other. The second mounting groove 10b includes two second groove sidewalls (not shown) and a second groove bottom wall (not shown). Along the length direction of the second mounting groove 10b (Y-axis direction in the figure), the two second groove sidewalls are spaced apart and opposite to each other. The second groove bottom wall connects between the two second groove sidewalls. Along the length direction of the base 10 (Y-axis direction in the figure), the fourth mounting groove 10d is located on one side of the second mounting groove 10b and is spaced apart from the second mounting groove 10b. Along the width direction of the base 10, the fourth mounting groove 10d and the third mounting groove 10c are spaced apart and opposite to each other. In some other embodiments, the second mounting slot 10b and / or the fourth mounting slot 10d may not penetrate the right side 103 of the base 10.

[0118] In addition, the base 10 is also provided with a first helical protrusion 10e and a second helical protrusion 10f. The first helical protrusion 10e is located in the first mounting groove 10a and between the two side walls of the first groove, and is spaced apart from both side walls of the first groove. The first helical protrusion 10e has two first helical surfaces 101e, which are parallel and opposite to each other, and each faces one of the side walls of the first groove.

[0119] The second helical protrusion 10f is located in the second mounting groove 10b, between the two side walls of the second groove, and spaced apart from both side walls. The second helical protrusion 10f has two second helical surfaces 101f, which are parallel and opposite to each other, each facing one of the side walls of the second groove 100b. The helical direction of the second helical protrusion 10f is opposite to that of the first helical protrusion 10e, and the helical direction of the second helical surface 101f is opposite to that of the first helical surface 101e.

[0120] Please also refer to Figure 6, which is an exploded structural diagram of the base 10 shown in Figure 5.

[0121] The base 10 includes a shaft cover 11, a bracket 12, and a support plate 13, both of which are mounted on the shaft cover 11. The shaft cover 11 extends along the Y-axis. The shaft cover 11 has a mounting groove 111. The opening of the mounting groove 111 is located on the top surface 112 of the shaft cover 11. The mounting groove 111 is recessed from the top surface 112 towards the bottom surface 113 (in the negative Z-axis direction shown in the figure), and penetrates the left side surface 114 and the right side surface 115 of the shaft cover 11. Exemplarily, the length direction of the mounting groove 111 is parallel to the Y-axis direction. In some other embodiments, the mounting groove 111 may not penetrate the left side surface 114 of the shaft cover 11, and / or, the mounting groove 111 may not penetrate the right side surface 115 of the shaft cover 11.

[0122] Both the bracket 12 and the support plate 13 are mounted in the assembly groove 111, and together with the shaft cover 11, form a first mounting groove 10a, a second mounting groove 10b, a third mounting groove 10c, and a fourth mounting groove 10d. The bracket 12 has a first helical protrusion 10e and a second helical protrusion 10f. The support plate 13 covers at least a portion of the assembly groove 111 and a portion of the bracket 12, and exposes the first helical protrusion 10e and the second helical protrusion 10f.

[0123] In this embodiment, the shaft cover 11, the bracket 12, and the support plate 13 are a relatively fixed integrated structure. The bracket 12 and the support plate 13 can be installed in the assembly groove 111 by means of positioning and limiting structures, screws, or welding to achieve relative fixation with the shaft cover 11.

[0124] Please refer to Figures 7 and 8. Figure 7 is a schematic diagram of the assembly structure of the base 10 and the connecting component 20 in the rotating shaft mechanism 130 shown in Figure 4, and Figure 8 is a schematic diagram of the structure of the connecting component 20 shown in Figure 4.

[0125] The connecting assembly 20 is installed in the first mounting groove 10a, the second mounting groove 10b, the third mounting groove 10c, and the fourth mounting groove 10d. The first rotating shaft 20a is rotatably and slidably installed in the first mounting groove 10a and the third mounting groove 10c, and passes through the inner side of the first helical protrusion 10e. The first rotating shaft 20a can rotate relative to the base 10 about its axis within the first mounting groove 10a and the third mounting groove 10c, and can slide relative to the base 10 along the axial direction of the first rotating shaft 20a (Y-axis direction in the figure). In some other embodiments, the first rotating shaft 20a may also be installed in the first mounting groove 10a and the third mounting groove 10c without rotation, and / or, the first rotating shaft 20a may also be installed in the first mounting groove 10a and the third mounting groove 10c without sliding.

[0126] The connecting assembly 20 further includes a first fixing ring 20k and a second fixing ring 20l. Both the first fixing ring 20k and the second fixing ring 20l are mounted in the first mounting groove 10a and sleeved on the first rotating shaft 20a, and are spaced apart along the axial direction of the first rotating shaft 20a. The first fixing ring 20k and the second fixing ring 20l are arranged around the first rotating shaft 20a and are both fixed relative to the first rotating shaft 20a. Exemplarily, the first fixing ring 20k and the second fixing ring 20l can be integrally formed with the first rotating shaft 20a. In some other embodiments, the first fixing ring 20k can be slidably connected to the first rotating shaft 20a, and the first fixing ring 20k can slide relative to the first rotating shaft 20a along the axial direction of the first rotating shaft 20a; and / or, the second fixing ring 20l can be slidably connected to the first rotating shaft 20a, and the second fixing ring 20l can slide relative to the first rotating shaft 20a along the axial direction of the first rotating shaft 20a.

[0127] The second rotating shaft 20b is rotatably and slidably mounted in the second mounting groove 10b and the fourth mounting groove 10d, and passes through the inner side of the second helical protrusion 10f. The second rotating shaft 20b can rotate relative to the base 10 about its axis within the second mounting groove 10b and the fourth mounting groove 10d, and can slide relative to the base 10 along the axial direction of the second rotating shaft 20b (Y-axis direction in the figure). In some other embodiments, the second rotating shaft 20b may also be mounted without rotation in the second mounting groove 10b and the fourth mounting groove 10d, and / or without sliding in the second mounting groove 10b and the fourth mounting groove 10d.

[0128] In addition, the connecting assembly 20 also includes a third fixing ring 20m and a fourth fixing ring 20n. Both the third fixing ring 20m and the fourth fixing ring 20n are installed in the second mounting groove 10b and are sleeved on the second rotating shaft 20b, and are spaced apart along the axial direction of the second rotating shaft 20b. The third fixing ring 20m and the fourth fixing ring 20n are arranged around the second rotating shaft 20b and are fixed relative to the second rotating shaft 20b. Exemplarily, the third fixing ring 20m and the fourth fixing ring 20n can be integrally formed with the second rotating shaft 20b. In some other embodiments, the third fixing ring 20m can be slidably connected to the second rotating shaft 20b, and the third fixing ring 20m can slide relative to the second rotating shaft 20b along its axial direction; and / or, the fourth fixing ring 20n can be slidably connected to the second rotating shaft 20b, and the fourth fixing ring 20n can slide relative to the second rotating shaft 20b along its axial direction.

[0129] The first fixing frame 20c is provided with a first sliding groove 21c, a third sliding groove 22c, and a first rotating groove 23c. The opening of the first sliding groove 21c is located on the left side 201c of the first fixing frame 20c (i.e., the surface of the first fixing frame 20c facing the base 10). The first sliding groove 21c is recessed from the left side 201c of the first fixing frame 20c towards the right side 202c (positive X-axis direction in the figure), and penetrates the right side 202c and the top surface 203c of the first fixing frame 20c. In some other embodiments, the first sliding groove 21c may not penetrate the right side 202c and / or the top surface 203c of the first fixing frame 20c.

[0130] Please refer to Figures 9 and 10. Figure 9 is a partial structural schematic diagram of the rotating shaft mechanism 130 shown in Figure 3 in a folded state, and Figure 10 is a cross-sectional structural schematic diagram of the rotating shaft mechanism 130 shown in Figure 9. The second fixing frame 20d, the third swing arm 20f, the fourth swing arm 20h, and the second connecting rod 20j of the connecting assembly 20 are not shown in Figures 9 and 10.

[0131] The first sliding groove 21c has a first limiting groove wall surface 211c, a second limiting groove wall surface 212c, and a third groove side wall surface 213c. Along the length of the first fixing frame 20c, the first limiting groove wall surface 211c and the second limiting groove wall surface 212c are spaced apart and opposite to each other. The angle between the first limiting groove wall surface 211c and the second limiting groove wall surface 212c and the length direction of the first fixing frame 20c is less than 90 degrees. The third groove side wall surface 213c is located between the top surface 203c and the bottom surface 204c of the first fixing frame 20c and connects the first limiting groove wall surface 211c and the second limiting groove wall surface 212c.

[0132] Referring to Figure 8, along the length of the first fixing frame 20c, the third sliding groove 22c is located on one side of the first sliding groove 21c and communicates with it. Specifically, the third sliding groove 22c is located on the side of the first limiting groove wall 211c facing away from the second limiting groove wall 212c. The openings of the third sliding groove 22c are all located on the left side 201c of the first fixing frame 20c. The third sliding groove 22c is recessed from the left side 201c of the first fixing frame 20c towards the right side 202c (positive X-axis direction in the figure), and penetrates the right side 202c, the top surface 203c, and the first limiting groove wall 211c of the first fixing frame 20c. In some other embodiments, the third sliding groove 22c may not penetrate the right side 202c or the top surface 203c of the first fixing frame 20c.

[0133] The first rotating groove 23c is located on the side of the third sliding groove 22c opposite to the first sliding groove 21c, and is spaced apart from the third sliding groove 22c. The opening of the first rotating groove 23c is located on the top surface 203c of the first fixing frame 20c. The first rotating groove 23c is recessed from the top surface 203c of the first fixing frame 20c towards the bottom surface 204c, and penetrates the front end surface 205c and the right side surface 202c of the first fixing frame 20c. The first rotating groove 23c is an arc-shaped groove, and the axis of the first rotating groove 23c is parallel to the Y-axis direction.

[0134] The first fixing frame 20c also includes a first connecting rod portion 24c. The first connecting rod portion 24c is located between the first limiting groove wall surface 211c and the second limiting groove wall surface 212c, and is spaced apart from both the first limiting groove wall surface 211c and the second limiting groove wall surface 212c. Specifically, the first connecting rod portion 24c is located on the third groove side wall surface 213c, and protrudes from the third groove side wall surface 213c toward the top surface 203c of the first fixing frame 20c. In some other embodiments, the first connecting rod portion 24c may also be located at other positions on the first fixing frame 20c; this application does not impose specific limitations on this.

[0135] The second fixed frame 20d is provided with a second sliding groove 21d, a fourth sliding groove 22d, and a second rotating groove 23d. The openings of the second sliding groove 21d and the fourth sliding groove 22d are both located on the right side 201d of the second fixed frame 20d (i.e., the surface of the second fixed frame 20d facing the base 10). Both the second sliding groove 21d and the fourth sliding groove 22d are recessed from the right side 201d of the second fixed frame 20d towards the left side 202d (the negative direction of the X-axis in the figure). The structures of the second sliding groove 21d, the fourth sliding groove 22d, and the second rotating groove 23d can be referred to the relevant descriptions of the first sliding groove 21c, the third sliding groove 22c, and the first rotating groove 23c in the first fixed frame 20c, respectively, and will not be repeated here.

[0136] In this embodiment, the second sliding groove 21d has a third limiting groove wall surface (not shown), a fourth limiting groove wall surface (not shown), and a fourth groove side wall surface 213d. Along the length of the second fixing frame 20d, the third and fourth limiting groove walls are spaced apart and opposite to each other. The angle between the third and fourth limiting groove walls and the length of the second fixing frame 20d is less than 90 degrees. The fourth groove side wall surface 213d is located between the top surface 203d and the bottom surface 204d of the second fixing frame 20d, and connects the third and fourth limiting groove walls.

[0137] In addition, the second fixing frame 20d is also provided with a third connecting rod portion 24d. The third connecting rod portion 24d is located between the wall surface of the third limiting groove and the wall surface of the fourth limiting groove, and is spaced apart from both the wall surfaces of the third and fourth limiting grooves. The third connecting rod portion 24d is provided on the side wall surface 213d of the fourth groove, and protrudes from the side wall surface 213d of the fourth groove towards the top surface 203d of the second fixing frame 20d. In some other embodiments, the third connecting rod portion 24d may also be provided at other positions of the second fixing frame 20d, and this application does not impose specific limitations on this.

[0138] Please also refer to Figure 11, which is a simplified structural diagram of the rotating shaft mechanism 130 shown in Figure 9.

[0139] The first swing arm 20e is rotatably mounted in the first mounting groove 10a and slidably mounted in the first sliding groove 21c. The first swing arm 20e includes a first rotating part 21e, a first sliding part 22e, and a first connecting part 23e. The first rotating part 21e is rotatably connected to the base 10. The first rotating part 21e is mounted in the first mounting groove 10a and can rotate relative to the base 10 within the first mounting groove 10a. The first sliding part 22e is fixedly connected to the first rotating part 21e and slidably connected to the first fixed frame 20c. The first sliding part 22e is mounted in the first sliding groove 21c and can slide relative to the first fixed frame 20c within the first sliding groove 21c. The first connecting part 23e connects the first rotating part 21e and the first sliding part 22e to achieve a fixed connection between the first sliding part 22e and the first rotating part 21e.

[0140] The first rotating part 21e is sleeved on the first rotating shaft 20a and can rotate relative to the base 10 about the axis of the first rotating shaft 20a. The first rotating part 21e is located between the first fixing ring 20k and the second fixing ring 20l. The first rotating part 21e includes a first side surface 211e and a second side surface 212e. Along the length direction of the first rotating part 21e (the Y-axis direction in the figure), the first side surface 211e and the second side surface 212e are arranged opposite to each other. The first side surface 211e is the surface of the first rotating part 21e facing the first fixing ring 20k, and the second side surface 212e is the surface of the first rotating part 21e facing the second fixing ring 20l.

[0141] The first rotating part 21e is provided with a first helical groove 213e. The first helical groove 213e is located between the first side surface 211e and the second side surface 212e, and is spaced apart from both the first side surface 211e and the second side surface 212e. The opening of the first helical groove 213e is located on the circumferential side surface of the first rotating part 21e (not shown in the figure). The first helical groove 213e is recessed from the circumferential side surface of the first rotating part 21e toward the first rotating shaft 20a, and exposes the first rotating shaft 20a. The first helical groove 213e is helically arranged around the rotation center of the first rotating part 21e relative to the base 10. That is, the first helical groove 213e is helically arranged around the axis of the first rotating shaft 20a. The first helical groove 213e has two first helical groove wall surfaces 214e. Along the length direction of the first rotating part 21e, the two first helical groove wall surfaces 214e are spaced apart and opposite to each other.

[0142] The structure of the first helical groove 213e is adapted to the structure of the first helical protrusion 10e. The first helical protrusion 10e is helically fitted into the first helical groove 213e. The first helical protrusion 10e is installed in the first helical groove 213e and can slide relative to the first rotating part 21e within the first helical groove 213e. The two first helical surfaces 101e of the first helical protrusion 10e respectively abut against the two first helical groove wall surfaces 214e of the first helical groove 213e.

[0143] Furthermore, the first rotating part 21e also has a first cam part 215e. The first cam part 215e is provided on the second side surface 212e and protrudes from the second side surface 212e in a direction away from the first side surface 211e (the negative Y-axis direction in the figure). The first cam part 215e has a first cam surface (not shown in the figure), which is the surface of the first cam part 215e facing away from the second side surface 212e. The first cam surface includes a plurality of protrusions and a plurality of concave portions, which are arranged in an alternating pattern.

[0144] The first sliding portion 22e can slide relative to the first fixed frame 20c within the first sliding groove 21c along the length and width directions of the first fixed frame 20c. The first sliding portion 22e has a first end face 221e, a second end face 222e, a third end face 223e, a first mating surface 224e, and a second mating surface 225e. The first end face 221e is the surface of the first sliding portion 22e that faces away from the first rotating portion 21e. Along the length direction of the first sliding portion 22e (Y-axis direction in the figure), the second end face 222e and the third end face 223e are arranged opposite to each other. The first mating surface 224e connects the first end face 221e and the second end face 222e, and the angle between it and the length direction of the first sliding portion 22e is less than 90 degrees. The first mating surface 224e is arranged opposite to and parallel to the wall surface 211c of the first limiting groove. Along the length of the first sliding portion 22e, the second mating surface 225e is disposed opposite to the first mating surface 224e and is connected between the first end face 221e and the third end face 223e, with an angle of less than 90 degrees between it and the length of the first sliding portion 22e. The second mating surface 225e is disposed opposite to and parallel to the second limiting groove wall surface 212c.

[0145] The first sliding portion 22e is provided with a first limiting groove 226e and a first clearance notch 227e. The opening of the first limiting groove 226e is located on the second end face 222e. The first limiting groove 226e is recessed from the second end face 222e toward the third end face 223e (in the negative Y-axis direction shown in the figure), and penetrates the top surface (not shown) and bottom surface (not shown) of the first sliding portion 22e. The first limiting groove 226e has a first limiting surface 228e, which faces the first rotating portion 21e and is connected to the second end face 222e. In some other embodiments, the first limiting groove 226e may not penetrate the top surface and / or bottom surface of the first sliding portion 22e, and this application does not impose specific limitations on this.

[0146] The first clearance notch 227e is located at the end of the first sliding portion 22e away from the first rotating portion 21e, and is spaced apart from the first limiting groove 226e. The opening of the first clearance notch 227e is located on the first end face 221e. The first clearance notch 227e is recessed from the first end face 221e toward the first rotating portion 21e, and penetrates the top and bottom surfaces of the first sliding portion 22e. In some other embodiments, the first clearance notch 227e may not penetrate the top and / or bottom surfaces of the first sliding portion 22e, and this application does not impose specific limitations on this.

[0147] Furthermore, the first sliding portion 22e also includes a second connecting rod portion 229e, which is located at the end of the first sliding portion 22e away from the first rotating portion 21e. Specifically, the second connecting rod portion 229e is located at the edge of the first clearance notch 227e and extends into the first clearance notch 227e. In some other embodiments, the second connecting rod portion 229e may also be located at other positions on the first sliding portion 22e, and this application does not impose specific limitations on this.

[0148] Please refer to Figure 12, which is an exploded structural diagram of the first swing arm 20e and the third swing arm 20f in the connecting assembly 20 shown in Figure 8.

[0149] The first swing arm 20e includes a first sub-swing arm 24e and a second sub-swing arm 25e, which are fixedly connected. The first sub-swing arm 24e includes a first sub-rotating portion 241e, a first sub-sliding portion 242e, and a first sub-connecting portion 243e. The first sub-rotating portion 241e includes a first side surface 211e. The first sub-rotating portion 241e is provided with a first fixing portion 244e. The first fixing portion 244e is located on the side of the first sub-rotating portion 241e facing the second sub-swing arm 25e. The first fixing portion 244e is a first fixing hole, the opening of which is located on the surface of the first sub-rotating portion 241e facing the second sub-swing arm 25e. The first fixing hole is recessed from the surface of the first sub-rotating portion 241e facing the second sub-swing arm 25e in a direction away from the second sub-swing arm 25e. For example, the first fixing hole is a circular hole.

[0150] The first sub-sliding part 242e includes a second end face 222e and a first mating surface 224e. The first sub-sliding part 242e also includes a first limiting groove 226e, a first clearance notch 227e, and a second connecting rod part 229e. A first sub-connecting part 243e connects the first sub-rotating part 241e and the first sub-sliding part 242e. The first sub-rotating part 241e, the first sub-sliding part 242e, and the first sub-connecting part 243e can be integrally formed.

[0151] The first sub-connecting portion 243e is provided with a second fixing portion 245e, which is located on the side of the first sub-connecting portion 243e facing the second sub-swing arm 25e. The second fixing portion 245e is located on the side of the first fixing portion 244e away from the first sub-rotating portion 241e and is spaced apart from the first fixing portion 244e. The second fixing portion 245e is a first fixing shaft. The first fixing shaft is located on the surface of the first sub-connecting portion 243e facing the second sub-swing arm 25e and protrudes from the surface of the first sub-connecting portion 243e facing the second sub-swing arm 25e in the direction facing the second sub-swing arm 25e. For example, the first fixing shaft is a circular shaft.

[0152] The second sub-swing arm 25e includes a second sub-rotating part 251e, a second sub-sliding part 252e, and a second sub-connecting part 253e. The second sub-rotating part 251e is fixedly connected to the first sub-rotating part 241e and forms a first rotating part 21e with the first sub-rotating part 241e. At this time, the second sub-rotating part 251e and the first sub-rotating part 241e enclose to form a first spiral groove 213e. The second sub-rotating part 251e includes a second side surface 212e and is provided with a first cam part 215e and a third fixing part 254e. The third fixing part 254e is provided on the side of the second sub-rotating part 251e facing the first sub-rotating part 241e and is fixed to the first fixing part 244e to realize the fixed connection between the second sub-rotating part 251e and the first sub-rotating part 241e. The third fixing part 254e is a second fixed shaft. The second fixed shaft is disposed on the surface of the second sub-rotating part 251e facing the first sub-rotating part 241e, and protrudes from the surface of the second sub-rotating part 251e toward the first sub-rotating part 241e, and is fixedly installed in the first fixed hole to achieve the fixation between the third fixed part 254e and the first fixed part 244e. For example, the second fixed shaft is a round shaft.

[0153] In some other embodiments, the third fixing part 254e may also be the first fixing hole, and the first fixing part 244e may also be the second fixing shaft, so as to achieve the fixing between the third fixing part 254e and the first fixing part 244e. This application does not impose specific limitations on this.

[0154] The second sub-sliding portion 252e contacts the first sub-sliding portion 242e and forms a first sliding portion 22e with the first sub-sliding portion 242e. The second sub-sliding portion 252e includes a third end face 223e and a second mating surface 225e. The surface of the second sub-sliding portion 252e facing away from the second sub-rotating portion 251e and the surface of the first sub-sliding portion 242e facing away from the first sub-rotating portion 241e form the first end face 221e. A second sub-connecting portion 253e connects the second sub-rotating portion 251e and the second sub-sliding portion 252e. The second sub-rotating portion 251e, the second sub-sliding portion 252e, and the second sub-connecting portion 253e can be integrally formed. The second sub-connecting portion 253e is fixedly connected to the first sub-connecting portion 243e and forms a first connecting portion 23e with the first sub-connecting portion 243e.

[0155] The second sub-connecting portion 253e is provided with a fourth fixing portion 255e. The fourth fixing portion 255e is located on the side of the second sub-connecting portion 253e facing the first sub-connecting portion 243e and is fixedly connected to the second fixing portion 245e to achieve a fixed connection between the second sub-connecting portion 253e and the first sub-connecting portion 243e. The fourth fixing portion 255e is a second fixing hole, the opening of which is located on the surface of the second sub-connecting portion 253e facing the first sub-connecting portion 243e. The second fixing hole is recessed from the surface of the second sub-connecting portion 253e facing the first sub-connecting portion 243e in a direction away from the first sub-connecting portion 243e. For example, the second fixing hole is a circular hole.

[0156] At this time, the first fixing shaft can be fixedly installed in the second fixing hole to achieve the fixation between the fourth fixing part 255e and the second fixing part 245e. In some other embodiments, the fourth fixing part 255e can also be the first fixing shaft, and the second fixing part 245e can be the second fixing hole to achieve the fixation between the fourth fixing part 255e and the second fixing part 245e. This application does not impose specific limitations on this.

[0157] In the rotating shaft mechanism 130 shown in this embodiment, the first swing arm 20e is formed by a fixed connection between the first sub-swing arm 24e and the second sub-swing arm 25e. This not only improves the machining accuracy of the first swing arm 20e, but also improves the assembly accuracy between the first swing arm 20e and the base 10, thus ensuring the assembly stability of the rotating shaft mechanism 130.

[0158] As shown in Figures 7 and 8, the third swing arm 20f is rotatably mounted in the second mounting groove 10b and slidably mounted in the second sliding groove 21d. The third swing arm 20f includes a third rotating part 21f, a third sliding part 22f, and a third connecting part 23f. The third rotating part 21f is rotatably connected to the base 10. The third rotating part 21f is mounted in the second mounting groove 10b and can rotate relative to the base 10 within the second mounting groove 10b. The third sliding part 22f is fixedly connected to the third rotating part 21f and slidably connected to the second fixed frame 20d. The third sliding part 22f is mounted in the second sliding groove 21d and can slide relative to the second fixed frame 20d within the second sliding groove 21d. The third connecting part 23f connects the third rotating part 21f and the third sliding part 22f to achieve a fixed connection between them.

[0159] The third rotating part 21f is sleeved on the second rotating shaft 20b and can rotate relative to the base 10 about the axis of the second rotating shaft 20b. The third rotating part 21f is located between the third fixed ring 20m and the fourth fixed ring 20n. The third rotating part 21f includes a third side surface 211f and a fourth side surface 212f. Along the length direction of the third rotating part 21f (the Y-axis direction in the figure), the third side surface 211f and the fourth side surface 212f are arranged opposite to each other. The third side surface 211f is the surface of the third rotating part 21f facing the third fixed ring 20m, and the fourth side surface 212f is the surface of the third rotating part 21f facing the fourth fixed ring 20n.

[0160] The third rotating part 21f is provided with a second helical groove 213f. It should be noted that the structure of the second helical groove 213f is similar to the description of the first helical groove 213e above, and will not be repeated here. The helical direction of the second helical groove 213f is opposite to that of the first helical groove 213e. The second helical groove 213f has two second helical wall surfaces 214f. Along the length of the third rotating part 21f, the two second helical wall surfaces 214f ​​are spaced apart and arranged opposite to each other.

[0161] The structure of the second helical groove 213f is adapted to the structure of the second helical protrusion 10f. The second helical protrusion 10f is helically fitted into the second helical groove 213f. The second helical protrusion 10f is installed in the second helical groove 213f and can slide relative to the third rotating part 21f within the second helical groove 213f. The two second helical surfaces 101f of the second helical protrusion 10f respectively abut against the two second helical wall surfaces 214f ​​of the second helical groove 213f.

[0162] The third rotating part 21f is also provided with a second cam part 215f. It should be noted that the structure of the second cam part 215f can be referred to the relevant description of the first cam part 215e above, and will not be repeated here.

[0163] The third sliding part 22f can slide relative to the second fixed frame 20d within the second sliding groove 21d along the length and width directions of the second fixed frame 20d. The third sliding part 22f has a fourth end face 221f, a fifth end face 222f, a sixth end face 223f, a third mating surface 224f, and a fourth mating surface 225f. It should be noted that the structures of the fourth end face 221f, the fifth end face 222f, the sixth end face 223f, the third mating surface 224f, and the fourth mating surface 225f can be referred to the relevant descriptions of the first end face 221e, the second end face 222e, the third end face 223e, the first mating surface 224e, and the second mating surface 225e above, respectively, and will not be repeated here. The third mating surface 224f is disposed opposite to the wall surface of the third limiting groove of the second sliding groove 21d and is parallel to the wall surface of the third limiting groove of the second sliding groove 21d. The fourth mating surface 225f is disposed opposite to the fourth limiting groove wall surface of the second sliding groove 21d and is parallel to the fourth limiting groove wall surface of the second sliding groove 21d.

[0164] The third sliding part 22f is provided with a second limiting groove 226f, a second clearance notch 227f, and a fourth connecting rod part 229f. It should be noted that the structures of the second limiting groove 226f, the second clearance notch 227f, and the fourth connecting rod part 229f can be referred to the relevant descriptions of the first limiting groove 226e, the first clearance notch 227e, and the second connecting rod part 229e above, respectively, and will not be repeated here. The second limiting groove 226f has a third limiting surface 228f.

[0165] As shown in Figure 12, in this embodiment, the third swing arm 20f includes a third sub-swing arm 24f and a fourth sub-swing arm 25f, which are fixedly connected. The structures of the third sub-swing arm 24f and the fourth sub-swing arm 25f can be referred to the relevant descriptions of the first sub-swing arm 24e and the second sub-swing arm 25e above, and will not be repeated here.

[0166] In the rotating shaft mechanism 130 shown in this embodiment, the third swing arm 20f is formed by a fixed connection between the third sub-swing arm 24f and the fourth sub-swing arm 25f. This not only improves the machining accuracy of the third swing arm 20f, but also improves the assembly accuracy between the third swing arm 20f and the base 10, thus ensuring the assembly stability of the rotating shaft mechanism 130.

[0167] As shown in Figures 7, 9, and 10, one end of the first connecting rod 20i extends into the first sliding groove 21c of the first fixed frame 20c and is rotatably connected to the first connecting rod portion 24c. The other end extends into the first clearance notch 227e of the first sliding portion 22e in the first swing arm 20e and is rotatably connected to the second connecting rod portion 229e. The first connecting rod 20i, the first connecting rod portion 24c, and the second connecting rod portion 229e can all be rotatably connected via pins and pin holes. In other embodiments, the first connecting rod 20i, the first connecting rod portion 24c, and the second connecting rod portion 229e can also be rotatably connected in other ways; this application does not impose specific limitations on these methods.

[0168] During the rotation of the first swing arm 20e relative to the base 10, the first rotating part 21e rotates relative to the base 10 within the first mounting groove 10a, and the first helical protrusion 10e slides relative to the first rotating part 21e within the first helical groove 213e. Under the action of the first helical protrusion 10e, the first swing arm 20e moves relative to the base 10 along the Y-axis. The first sliding part 22e slides relative to the first fixed frame 20c along the length direction of the first fixed frame 20c within the first sliding groove 21c. The first connecting rod 20i rotates relative to the first fixed frame 20c under the drive of the first sliding part 22e, thereby driving the first sliding part 22e to slide relative to the first fixed frame 20c along the width direction of the first fixed frame 20c within the first sliding groove 21c, thus realizing that the first sliding part 22e slides relative to the first fixed frame 20c along the length and width directions of the first fixed frame 20c within the first sliding groove 21c.

[0169] In this embodiment, the first connecting rod 20i is used to enhance the kinematic coordination between the first fixed frame 20c and the first swing arm 20e. During the rotation of the first swing arm 20e relative to the base 10, the first swing arm 20e slides relative to the first fixed frame 20c along the length and width directions of the first fixed frame 20c. The first swing arm 20e can be used as the main swing arm of the rotating shaft mechanism 130 to realize the closed-loop motion of the rotating shaft mechanism 130. Compared with the traditional main swing arm that engages with the base through a virtual axis, the first swing arm 20e engages with the base 10 through a real axis. The thickness space occupied by the first swing arm 20e is reduced, which can reduce the thickness space of the rotating shaft mechanism 130 and help to achieve a thinner and lighter design of the electronic device 1000.

[0170] As shown in Figure 9, when the rotating shaft mechanism 130 is in the folded state, the first limiting groove wall surface 211c of the first fixed frame 20c is opposite to the first mating surface 224e of the first swing arm 20e, and the angle α between the length direction of the first connecting rod 20i and the length direction of the first fixed frame 20c is less than 90 degrees. Specifically, the first limiting groove wall surface 211c of the first fixed frame 20c limits the first swing arm 20e, thereby restricting the sliding distance of the first swing arm 20e relative to the first fixed frame 20c along the width direction of the first fixed frame 20c. At this time, the first limiting groove wall surface 211c of the first fixed frame 20c can abut against the first mating surface 224e of the first swing arm 20e, or the distance between the first limiting groove wall surface 211c of the first fixed frame 20c and the first mating surface 224e of the first swing arm 20e can be very small. In some other embodiments, when the pivot mechanism 130 is in a folded state, the included angle α between the first link 20i and the first fixed frame 20c along their length can also be equal to 90 degrees.

[0171] When the electronic device 1000 is in a folded state, the first swing arm 20e, the first connecting rod 20i, and the first fixed frame 20c form a stable anti-drop force transmission path. When the electronic device 1000 falls, the first limiting groove wall 211c and the first connecting rod 20i in the first fixed frame 20c can jointly restrict the first swing arm 20e from sliding relative to the first fixed frame 20c along the width direction of the first fixed frame 20c. The first fixed frame 20c will not cause the display screen 200 to move towards the base 10, and the display screen 200 will not interfere with the rotating shaft mechanism 130 and fail, thereby improving the drop reliability of the electronic device 1000 and ensuring the reliability of the electronic device 1000 in use.

[0172] As shown in Figure 7, one end of the second connecting rod 20j extends into the second sliding groove 21d of the second fixed frame 20d and is rotatably connected to the third connecting rod portion 24d. The other end extends into the second clearance notch 227f of the third sliding portion 22f in the third swing arm 20f and is rotatably connected to the fourth connecting rod portion 229f. It should be noted that the cooperative motion relationship between the second connecting rod 20j, the second fixed frame 20d, and the third swing arm 20f can be referred to the cooperative motion relationship between the first connecting rod 20i, the first fixed frame 20c, and the first swing arm 20e described above, and will not be repeated here.

[0173] During the rotation of the third swing arm 20f relative to the base 10, the third rotating part 21f rotates relative to the base 10 within the second mounting groove 10b, and the second helical protrusion 10f slides relative to the third rotating part 21f within the second helical groove 213f. Under the action of the second helical protrusion 10f, the third swing arm 20f moves relative to the base 10 along the Y-axis. The third sliding part 22f slides relative to the second fixed frame 20d within the second sliding groove 21d along the length direction of the second fixed frame 20d. The second connecting rod 20j rotates relative to the second fixed frame 20d under the drive of the third sliding part 22f, thereby driving the third sliding part 22f to slide relative to the second fixed frame 20d within the second sliding groove 21d along the width direction of the second fixed frame 20d. Thus, the third sliding part 22f slides relative to the second fixed frame 20d within the second sliding groove 21d along both the length and width directions of the second fixed frame 20d.

[0174] In this embodiment, the second link 20j is used to enhance the kinematic coordination between the second fixed frame 20d and the third swing arm 20f. During the rotation of the third swing arm 20f relative to the base 10, the third swing arm 20f slides relative to the second fixed frame 20d along the length and width directions of the second fixed frame 20d. The third swing arm 20f can be used as the main swing arm of the rotating shaft mechanism 130 to achieve the closed-loop motion of the rotating shaft mechanism 130. Compared to the traditional main swing arm that engages with the base via a virtual axis, the third swing arm 20f engages with the base 10 via a real axis. This reduces the thickness space occupied by the third swing arm 20f, thereby reducing the thickness space of the rotating shaft mechanism 130 and contributing to the thinner and lighter design of the electronic device 1000.

[0175] When the rotating shaft mechanism 130 is in the folded state, the third limiting groove wall surface in the second fixed frame 20d and the third mating surface 221f of the third swing arm 20f are spaced apart and opposite to each other, and the included angle between the second connecting rod 20j and the length direction of the second fixed frame 20d is less than 90 degrees. When the electronic device 1000 is in a folded state, the wall surface of the third limiting groove in the second fixed frame 20d can limit the sliding distance of the third swing arm 20f relative to the second fixed frame 20d along the width direction of the second fixed frame 20d. The third swing arm 20f, the second connecting rod 20j, and the second fixed frame 20d will form a stable anti-drop force transmission path. When the electronic device 1000 falls, the wall surface of the third limiting groove in the second fixed frame 20d and the second connecting rod 20j can jointly limit the sliding of the third swing arm 20f relative to the second fixed frame 20d along the width direction of the second fixed frame 20d. The second fixed frame 20d will not drive the display screen 200 to move towards the base 10, and the display screen 200 will not interfere with the rotating shaft mechanism 130 and fail. This improves the drop reliability of the electronic device 1000 and ensures the reliability of the electronic device 1000 in use.

[0176] During the process of switching from the unfolded state to the folded state, the first swing arm 20e can drive the first fixed frame 20c to move relative to the base 10 through the first connecting rod 20i, and the second swing arm can drive the second fixed frame to move relative to the base 10 through the second connecting rod 20j, until the first fixed frame 20c and the second fixed frame 20d move to the designated design position, so that the rotating mechanism 130 forms a rotating space that can accommodate the flexible part of the display screen (not shown), avoiding interference between the rotating mechanism 130 and the display screen, and ensuring the reliability of the electronic device 1000.

[0177] Referring to Figures 7 and 8, the second swing arm 20g is rotatably mounted in the third mounting groove 10c and slidably mounted in the third sliding groove 22c. The second swing arm 20g includes a second rotating part 21g, a second sliding part 22g, and a second connecting part 23g. The second rotating part 21g is rotatably connected to the base 10. The second rotating part 21g is mounted in the third mounting groove 10c and can rotate relative to the base 10 within the third mounting groove 10c. The second sliding part 22g is fixedly connected to the second rotating part 21g and slidably connected to the first fixing frame 20c. The second sliding part 22g is mounted in the third sliding groove 22c and can slide relative to the first fixing frame 20c within the third sliding groove 22c. The second connecting part 23g connects the second rotating part 21g and the second sliding part 22g to achieve a fixed connection between the second rotating part 21g and the second sliding part 22g. The second rotating part 21g, the second sliding part 22g, and the second connecting part 23g can be integrally formed.

[0178] The second rotating part 21g is sleeved on the first rotating shaft 20a and can rotate relative to the base 10 about the axis of the first rotating shaft 20a. The second rotating part 21g is located on the side of the first fixing ring 20k opposite to the first rotating part 21e. The second sliding part 22g can slide relative to the first fixing frame 20c along the width direction of the first fixing frame 20c within the third sliding groove 22c. The second sliding part 22g is provided with a first limiting part 221g, which is located on the side of the second sliding part 22g facing the first sliding part 22e. The first limiting part 221g has a second limiting surface 222g, which is the surface of the first limiting part 221g opposite to the first rotating part 21g.

[0179] It should be noted that, since the second rotating part 21g of the second swing arm 20g can only rotate around the axis of the first rotating shaft 20a, and cannot move relative to the base 10 along the axial direction of the first rotating shaft 20a, the second swing arm 20g can only move relative to the first fixed frame 20c along the width direction of the first fixed frame 20c. The setting of the second swing arm 20g can restrict the degree of freedom of the first fixed frame 20c to move relative to the base 10 along the Y-axis, and prevent the first fixed frame 20c from driving the display screen 200 to move, thus ensuring the reliability of the electronic device 1000.

[0180] As shown in Figures 9 and 10, when the rotating shaft mechanism 130 is in the folded state, the first limiting part 221g extends into the first limiting groove 226e of the first swing arm 20e and is positioned opposite to the first limiting surface 228e of the first limiting groove 226e. The first limiting surface 228e limits the first limiting part 221g to restrict the sliding distance of the second swing arm 20g relative to the first fixed frame 20c along the width direction of the first fixed frame 20c. At this time, the first limiting surface 228e can abut against the second limiting surface 222g, or the distance between the first limiting surface 228e and the second limiting surface 222g can be very small.

[0181] When the electronic device 1000 is in a folded state and is dropped, the first limiting surface 228e can restrict the first limiting part 221g from sliding relative to the first fixed frame 20c along the width direction of the first fixed frame 20c. The impact force on the second swing arm 20g can be transmitted to the first swing arm 20e. The first swing arm 20e will not slide relative to the first fixed frame 20c along the width direction of the first fixed frame 20c. The first fixed frame 20c will not drive the display screen 200 to move towards the base 10. The display screen 200 will not interfere with the rotating shaft mechanism 130 and fail. This improves the drop reliability of the electronic device 1000 and ensures the reliability of the electronic device 1000 in use.

[0182] The fourth swing arm 20h is rotatably mounted in the fourth mounting groove 10d and slidably mounted in the fourth sliding groove 22d. The fourth swing arm 20h includes a fourth rotating part 21h, a fourth sliding part 22h, and a fourth connecting part 23h. The fourth rotating part 21h is rotatably connected to the base 10. The fourth rotating part 21h is mounted in the fourth mounting groove 10d and can rotate relative to the base 10 within the fourth mounting groove 10d. The fourth sliding part 22h is fixedly connected to the fourth rotating part 21h and slidably connected to the second fixed frame 20d. The fourth sliding part 22h is mounted in the fourth sliding groove 22d and can slide relative to the second fixed frame 20d within the fourth sliding groove 22d. The fourth connecting part 23h connects the fourth rotating part 21h and the fourth sliding part 22h to achieve a fixed connection between them. The fourth rotating part 21h, the fourth sliding part 22h, and the fourth connecting part 23h can be integrally formed.

[0183] The fourth rotating part 21h is sleeved on the second rotating shaft 20b and can rotate relative to the base 10 about the axis of the second rotating shaft 20b. The fourth rotating part 21h is located on the side of the third fixed ring 20m opposite to the third rotating part 21f. The fourth sliding part 22h can slide relative to the second fixed frame 20d along the width direction of the second fixed frame 20d within the fourth sliding groove 22d. The fourth sliding part 22h is provided with a second limiting part 221h, which has a fourth limiting surface 222h. It should be noted that the structure of the second limiting part 221h can be referred to the relevant description of the first limiting part 221g above, and will not be repeated here.

[0184] It should be noted that, since the fourth rotating part 21h of the fourth swing arm 20h can only rotate around the axis of the second rotating shaft 20b, and cannot move relative to the base 10 along the axial direction of the second rotating shaft 20b, the fourth swing arm 20h can only move relative to the second fixed frame 20d along the width direction of the second fixed frame 20d. The setting of the fourth swing arm 20h can restrict the degree of freedom of the second fixed frame 20d to move relative to the base 10 along the Y-axis, and prevent the second fixed frame 20d from driving the display screen 200 to move, thus ensuring the reliability of the electronic device 1000.

[0185] When the rotating shaft mechanism 130 is in the folded state, the second limiting part 221h extends into the second limiting groove 22ef of the third swing arm 20f and is positioned opposite to the sixth limiting groove wall of the second limiting groove 226f. The sixth limiting groove wall of the second limiting groove 226f limits the second limiting part 221h, thereby restricting the sliding distance of the fourth swing arm 20h relative to the second fixed frame 20d along the width direction of the second fixed frame 20d. At this time, the sixth limiting groove wall of the second limiting groove 226f can abut against the fourth limiting surface 222h, or the distance between the third limiting surface 228f and the fourth limiting surface 222h can be very small.

[0186] When the electronic device 1000 is in a folded state and is dropped, the sixth limiting groove wall of the second limiting groove 226f can restrict the second limiting part 221h from sliding relative to the second fixed frame 20d along the width direction of the second fixed frame 20d. The impact force on the fourth swing arm 20h can be transmitted to the third swing arm 20f. The fourth swing arm 20h will not slide relative to the second fixed frame 20d along the width direction of the second fixed frame 20d. The second fixed frame 20d will not drive the display screen 200 to move towards the base 10. The display screen 200 will not interfere with the rotating shaft mechanism 130 and fail. This improves the drop reliability of the electronic device 1000 and ensures the reliability of the electronic device 1000 in use.

[0187] Please refer to Figures 13 and 14. Figure 13 is a structural schematic diagram of the damping component 30 in the rotating shaft mechanism 130 shown in Figure 4. Figure 14 is a schematic diagram of the assembly structure of the base 10, connecting component 20, damping component 30, and synchronization component 40 in the rotating shaft mechanism 130 shown in Figure 4. Figures 16 and 17 only show the support 12 of the base 10, the first rotating shaft 20a, the second rotating shaft 20b, the first swing arm 20e, the third swing arm 20f, the first fixed ring 20k, the second fixed ring 20l, the third fixed ring 20m, and the fourth fixed ring 20n of the connecting component 20.

[0188] The damping assembly 30 is mounted in the first mounting groove 10a and the second mounting groove 10b, and is located between the first rotating part 21e and the second fixed ring 20k, and between the third rotating part 21f and the fourth fixed ring 20n. The cam support 30a has a third cam part 31a and a fourth cam part 32a. The third cam part 31a is located on the side of the cam support 30a facing the first cam part 215e and abuts against the first cam part 215e. The third cam part 31a has a third cam surface (not shown), which is the surface of the third cam part 31a facing the first cam part 215e and abuts against the first cam surface. The fourth cam part 32a is located on the side of the cam support 30a facing the second cam part 215f and abuts against the second cam part 215f. Along the width direction of the base 10, the third cam part 31a and the fourth cam part 32a are spaced apart from each other. The fourth cam portion 32a has a fourth cam surface (not shown in the figure), which is the surface of the fourth cam portion 32a facing the second cam portion 215f and abutting against the second cam surface. The fixed bracket 30b is located between the cam bracket 30a and the second fixed ring 20k, and between the cam bracket 30a and the fourth fixed ring 20n, and abuts against the second fixed ring 20k and the fourth fixed ring 20n.

[0189] When the first swing arm 20e and the third swing arm 20f rotate relative to the base 10, the first cam portion 215e rotates relative to the third cam portion 31a, and the second cam portion 215f rotates relative to the fourth cam portion 32a. The first cam portion 215e and the second cam portion 215f together abut against the cam bracket 30a, so that the cam bracket 30a slides relative to the fixed bracket 30b along the axis of the first rotation shaft 20a and the axis of the second rotation shaft 20b, so that the first elastic element 30c and the second elastic element 30d undergo elastic deformation or elastic recovery, thereby providing damping force for the rotation of the first swing arm 20e and the third swing arm 20f relative to the base 10. Users can experience better feel and improve the user experience.

[0190] The synchronous bracket 41 is installed in the first mounting groove 10a and the second mounting groove 10b, and is located between the first rotating part 21e and the first fixed ring 20k, and between the third rotating part 21f and the third fixed ring 20m. Specifically, the synchronous bracket 41 abuts against the first rotating part 21e and the first fixed ring 20k, and abuts against the third rotating part 21f and the third fixed ring 20m. The first elastic element 30c and the second elastic element 30d are in a compressed state. The first elastic element 30c and the second elastic element 30d can hold the synchronous bracket 41 against the first fixed ring 20k and the third fixed ring 20m at all times through the cam bracket 30a, the first swing arm 20e, and the third swing arm 20f, to ensure the synchronous rotation of the first swing arm 20e and the third swing arm 20f relative to the base 10, thereby ensuring the synchronous rotation of the first housing 110 and the second housing 120 and improving the user experience.

[0191] Please refer to Figures 15 to 18. Figure 15 is a structural schematic diagram of the door panel assembly 50 in the pivot mechanism 130 shown in Figure 4. Figure 16 is a structural schematic diagram of the door panel assembly 50 shown in Figure 15 from another angle. Figure 17 is a partial structural schematic diagram of the pivot mechanism 130 shown in Figure 4 in a folded state. Figure 18 is a structural schematic diagram of the pivot mechanism 130 shown in Figure 17 from another angle.

[0192] The first door panel 50a is installed in the first rotating groove 23c of the first fixed frame 20c and can rotate relative to the first fixed frame 20c within the first rotating groove 23c to achieve a rotatable connection between the first door panel 50a and the first fixed frame 20c. The first door panel 50a is also installed in the third sliding groove 22c of the first fixed frame 20c and is slidably and rotatably connected with the first sliding part 22e of the first swing arm 20e to achieve a high-pair connection between the first door panel 50a and the second swing arm 20g.

[0193] In this embodiment, the first door panel 50a is provided with a first mating part 51a and a second mating part 52a. Both the first mating part 51a and the second mating part 52a are located on the bottom surface 501a of the first door panel 50a and protrude from the bottom surface 501a away from the top surface 502a, and are spaced apart from each other. The structure of the first mating part 51a is adapted to the structure of the first rotating groove 23c. The first mating part 51a is rotatably fitted into the first rotating groove 23c. The first mating part 51a is installed in one first rotating groove 23c and can rotate relative to the first fixing frame 20c within the first rotating groove 23c to achieve a rotatable connection between the first door panel 50a and the first fixing frame 20c. In other embodiments, there may be multiple first rotating grooves 23c and first mating parts 51a. Multiple first rotating grooves 23c are arranged at intervals along the length of the first fixing frame 20c. Along the length direction of the first door panel 50a (Y-axis direction in the figure), a plurality of first mating parts 51a are arranged at intervals, and each first mating part 51a is rotatably mated to a first rotating groove 23c.

[0194] The second mating part 52a passes through the third sliding groove 22c and rotates and slides with the second sliding part 22g of the second swing arm 20g to achieve a high-pair connection between the first door panel 50a and the second swing arm 20g. In some other embodiments, the second mating part 52a may also pass through the first sliding groove 21c and rotate and slide with the first sliding part 22e of the first swing arm 20e to achieve a high-pair connection between the first door panel 50a and the first swing arm 20e.

[0195] The second door panel 50b is installed in the second rotating groove 23d of the second fixed frame 20d and can rotate relative to the second fixed frame 20d within the second rotating groove 23d to achieve a rotatable connection between the second door panel 50b and the second fixed frame 20d. The second door panel 50b is also installed in the fourth sliding groove 22d of the second fixed frame 20d and is slidably and rotatably connected with the third sliding part 22f of the third swing arm 20f to achieve a high-pair connection between the second door panel 50b and the third swing arm 20f.

[0196] In this embodiment, the second door panel 50b is provided with a third mating part 51b and a fourth mating part 52b. Both the third mating part 51b and the fourth mating part 52b are located on the bottom surface 501b of the second door panel 50b and protrude from the bottom surface 501b away from the top surface 502b, and are spaced apart from each other. The structure of the third mating part 51b is adapted to the structure of the second rotating groove 23d. The third mating part 51b is rotatably fitted into the second rotating groove 23d. The third mating part 51b is installed in one second rotating groove 23d and can rotate relative to the second fixing frame 20d within the second rotating groove 23d to achieve a rotatable connection between the second door panel 50b and the second fixing frame 20d. In other embodiments, there may be multiple second rotating grooves 23d and third mating parts 51b. Multiple second rotating grooves 23d are arranged at intervals along the length of the second fixing frame 20d. Along the length of the second door panel 50b (Y-axis direction in the diagram), a plurality of third mating parts 51b are arranged at intervals. Each third mating part 51b is rotatably fitted into a second rotating groove 23d.

[0197] The fourth mating part 52b passes through the fourth sliding groove 22d and rotates and slides with the fourth sliding part 22h of the fourth swing arm 20h to achieve a high-pair connection between the second door panel 50b and the fourth swing arm 20h. In some other embodiments, the fourth mating part 52b may also pass through the second sliding groove 21d and rotate and slide with the third sliding part 22f of the third swing arm 20f to achieve a high-pair connection between the second door panel 50b and the third swing arm 20f.

[0198] Please refer to Figures 19 and 20. Figure 19 is a partial structural schematic diagram of the rotating shaft mechanism 130 of the electronic device 100 in the electronic device 1000 shown in Figure 2 under a second embodiment. Figure 20 is a simplified structural schematic diagram of the rotating shaft mechanism 130 shown in Figure 19.

[0199] The rotating shaft mechanism 130 shown in this embodiment differs from the rotating shaft mechanism 130 shown in the first embodiment in that the connecting assembly 20 does not include the second swing arm 20g and the fourth swing arm 20h. There are two connecting assemblies 20, namely the first connecting assembly 202 and the second connecting assembly 203. The first connecting assembly 202 and the second connecting assembly 203 are mirror-symmetrical about the plane of symmetry O. Specifically, the first fixing frame 20c of the two connecting assemblies 20 is mirror-symmetrical about the plane of symmetry O, the first swing arm 20e of the two connecting assemblies 20 is mirror-symmetrical about the plane of symmetry O, and the first connecting rod 20i of the two connecting assemblies 20 is mirror-symmetrical about the plane of symmetry O. The plane of symmetry O is perpendicular to the length direction of the rotating shaft mechanism 130. It should be noted that the first fixing frame 20c of the two connecting assemblies 20 can be integrally formed.

[0200] In this embodiment, since the two connecting components 20 are mirror-symmetrical about the symmetry plane O, during the switching process between the unfolded state and the folded state of the rotating shaft mechanism 130, the first swing arm 20e of one connecting component 20 moves relative to the base 10 in the positive Y-axis direction, and the first swing arm 20e of the other connecting component 20 moves relative to the base 10 in the negative Y-axis direction. Thus, the two connecting components 20 can restrict the degree of freedom of the first fixed frame 20c to move relative to the base 10 in the Y-axis direction, preventing the first fixed frame 20c from driving the display screen 200 to move, and ensuring the reliability of the electronic device 1000.

[0201] Please refer to Figures 21 and 22. Figure 21 is a partial structural schematic diagram of the rotating shaft mechanism 130 of the electronic device 100 in the electronic device 1000 shown in Figure 2 under a third embodiment. Figure 22 is a simplified structural schematic diagram of the rotating shaft mechanism 130 shown in Figure 21.

[0202] The rotating shaft mechanism 130 shown in this embodiment differs from the rotating shaft mechanism 130 shown in the first embodiment in that the connecting assembly 20 does not include the first connecting rod 20i and the second connecting rod 20j. In the connecting assembly 20, the first fixing frame 20c is further provided with a first sliding hole 25c, the opening of which is located on the third groove sidewall of the first sliding groove (not shown). The first sliding hole 25c is recessed from the third groove sidewall towards the bottom surface 204c of the first fixing frame 20c and penetrates the bottom surface 204c of the first fixing frame 20c. The first sliding hole 25c has an unfolded position and a folded position. Along the length of the first fixing frame 20c, the folded position of the first sliding hole 25c is located on one side of the unfolded position and is spaced apart from it. For example, the folded position of the first sliding hole 25c is located in front of the unfolded position. The folded position of the first sliding hole 25c is also located on the side of the first sliding hole 25c facing the base 10 when unfolded. In some other embodiments, the first sliding hole 25c may not penetrate the bottom surface 204c of the first fixing frame 20c.

[0203] In this embodiment, the first sliding hole 25c is straight. The length direction of the first sliding hole 25c intersects the length direction of the first fixing frame 20c. The angle β between the length direction of the first sliding hole 25c and the length direction of the first fixing frame 20c is less than 90 degrees. For example, there are two first sliding holes 25c, spaced apart and arranged parallel to each other along the length direction of the first fixing frame 20c. In other embodiments, the first sliding hole 25c may also be curved or other shapes, and / or there may be one or more first sliding holes 25c; this application does not impose specific limitations on this.

[0204] The second fixing bracket is provided with a second sliding hole, the opening of which is located on the side wall of the fourth groove of the second sliding groove. It should be noted that the structure of the second sliding hole can be referred to the relevant description of the first sliding hole 25c, and will not be repeated here.

[0205] In the first swing arm 20e, the first sliding portion 22e is provided with a first sliding shaft 26e. The first sliding shaft 26e is disposed on the surface of the first sliding portion 22e facing the third groove sidewall of the first sliding groove, and protrudes from the first sliding portion 22e toward the third groove sidewall. The structure of the first sliding shaft 26e is adapted to the structure of the first sliding hole 25c. The first sliding shaft 26e passes through the first sliding hole 25c and can slide relative to the first fixed frame 20c within the first sliding hole 25c to achieve a high-pair connection between the first swing arm 20e and the first fixed frame 20c. For example, there are two first sliding shafts 26e, arranged at intervals along the length of the first sliding portion 22e. The two first sliding shafts 26e can be respectively disposed in the first sub-sliding portion (not shown) of the first sub-swing arm and the second sub-sliding portion (not shown) of the second sub-swing arm.

[0206] In the second swing arm, the second sliding part is provided with a second sliding shaft, which is located on the surface of the second sliding part facing the fourth groove sidewall of the second sliding groove. It should be noted that the structure of the second sliding shaft can be referred to the relevant description of the first sliding shaft 26e, and will not be repeated here.

[0207] During the process of switching the pivot mechanism 130 from the unfolded state to the folded state, the first sliding shaft 26e can slide from the unfolded position of the first sliding hole 25c to the folded position of the first sliding hole 25c, and the second sliding shaft can slide from the unfolded position of the second sliding hole to the folded position of the second sliding hole. The first swing arm 20e can drive the first fixed frame 20c to move relative to the base 10 through the high pair cooperation between the first sliding shaft 26e and the first sliding hole 25c. The second swing arm can drive the second fixed frame to move relative to the base 10 through the high pair cooperation between the second sliding shaft and the second sliding hole, until the first fixed frame 20c and the second fixed frame move to the designated design position, so that the pivot mechanism 130 forms a pivot space that can accommodate the flexible part of the display screen (not shown), avoiding interference between the pivot mechanism 130 and the display screen, and ensuring the reliability of the electronic device 1000.

[0208] Please refer to Figures 23 to 25. Figure 23 is a partial structural schematic diagram of the rotating shaft mechanism 130 of the electronic device 1000 in the electronic device 1000 shown in Figure 1 under a fourth embodiment. Figure 24 is a partial structural schematic diagram of the rotating shaft mechanism 130 of the electronic device 1000 in the electronic device 1000 shown in Figure 2 under a fourth embodiment. Figure 25 is a structural schematic diagram of the rotating shaft mechanism 130 shown in Figure 24 from another angle.

[0209] The difference between the rotating shaft mechanism 130 shown in this embodiment and the rotating shaft mechanism shown in the third embodiment is that the first sliding hole 25c is curved. For example, the first sliding hole 25c is S-shaped. Specifically, the first sliding hole 25c includes a first sliding hole section 251c and a second sliding hole section 252c. Along the length of the first fixing frame 20c, the second sliding hole section 252c is located on one side of the first sliding hole section 251c. The second sliding hole section 252c is also located on the side of the first sliding hole section 251c near the base 10 and communicates with the first sliding hole section 251c. The second sliding hole section 252c protrudes towards the base 10. The unfolded position of the first sliding hole 25c is located in the first sliding hole section 251c, and the folded position of the first sliding hole 25c is located in the second sliding hole section 252c. For example, the unfolded position of the first sliding hole 25c is located at the end of the first sliding hole segment 251c away from the second sliding hole segment 252c, and the folded position of the first sliding hole 25c is located at the end of the second sliding hole segment 252c away from the first sliding hole segment 251c.

[0210] When the electronic device 1000 is in a folded state, the first sliding shaft 26e of the first swing arm 20e is located at the folded position of the first sliding hole 25c. Since the folded position of the first sliding hole 25c protrudes downward toward the base 10, the folded position of the first sliding hole 25c can restrict the first sliding shaft 26e from moving relative to the first fixed frame 20c along the width direction of the first fixed frame 20c. The folded position of the first sliding hole 25c can act as a drop stop to prevent the pivot mechanism 130 from interfering with the display screen 200 and failing when the electronic device 1000 is dropped, thereby improving the drop reliability of the electronic device 1000 and ensuring the reliability of the electronic device 1000 in use.

[0211] Furthermore, the second sliding hole 25d is curved. For example, the second sliding hole 25d is S-shaped. It should be noted that the structure of the second sliding hole 25d can be referred to the relevant description of the first sliding hole 25c, and will not be repeated here.

[0212] When the electronic device 1000 is in a folded state, the second sliding shaft 26f of the third swing arm 20f is located at the folded position of the second sliding hole 25d. Since the folded positions of the second sliding holes 25d all bulge downward toward the base 10, the folded positions of the second sliding holes 25d can restrict the movement of the second sliding shaft 26d relative to the second fixed frame 20d along the width direction of the second fixed frame 20d. Thus, the folded positions of the second sliding holes 25d can all act as anti-drop stops to prevent the pivot mechanism 130 from interfering with the display screen 200 and failing when the electronic device 1000 is dropped. This improves the drop reliability of the electronic device 1000 and ensures the reliability of the electronic device 1000 in use.

[0213] Please refer to Figure 26, which is a partial structural schematic diagram of the rotating shaft mechanism 130 of the electronic device 100 in the electronic device 1000 shown in Figure 2 under the fifth embodiment.

[0214] The difference between the rotating shaft mechanism 130 shown in this embodiment and the rotating shaft mechanism shown in the fourth embodiment above is that, in the first sliding hole 25c, the second sliding hole segment 252c is parallel to the length direction of the first fixed frame 20c. It should be noted that the structure of the second sliding hole can be referred to the relevant description of the first sliding hole 25c, and will not be repeated here.

[0215] When the electronic device 1000 is in a folded state, the first sliding shaft 26e of the first swing arm 20e is located at the folded position of the first sliding hole 25c. Since the folded position of the first sliding hole 25c is parallel to the length direction of the first fixed frame 20c, the folded position of the first sliding hole 25c can restrict the first sliding shaft 26e from moving relative to the first fixed frame 20c along the width direction of the first fixed frame 20c. The folded position of the first sliding hole 25c can act as a drop stop to prevent the pivot mechanism 130 from interfering with the display screen 200 and failing when the electronic device 1000 is dropped, thereby improving the drop reliability of the electronic device 1000 and ensuring the reliability of the electronic device 1000 in use.

[0216] Please refer to Figure 27, which is a simplified structural diagram of the rotating shaft mechanism 130 of the electronic device 100 in the electronic device 1000 shown in Figure 2 under the sixth embodiment.

[0217] The rotating shaft mechanism 130 shown in this embodiment differs from the rotating shaft mechanism 130 shown in the third to fifth embodiments described above in that the connecting assembly 20 does not include the third and fourth swing arms. There are two connecting assemblies 20, which are mirror-symmetrical about the plane of symmetry O. Specifically, the first fixing frame 20c of the two connecting assemblies 20 is mirror-symmetrical about a plane of symmetry (not shown), and the first swing arm 20e of the two connecting assemblies 20 is mirror-symmetrical about the plane of symmetry O. The plane of symmetry is perpendicular to the length direction of the rotating shaft mechanism 130. It should be noted that the first fixing frame 20c of the two connecting assemblies 20 can be integrally formed.

[0218] In this embodiment, since the two connecting components 20 are mirror-symmetrical about the symmetry plane O, during the switching process between the unfolded state and the folded state of the rotating shaft mechanism 130, the first swing arm 20e of one connecting component 20 moves relative to the base 10 in the positive Y-axis direction, and the first swing arm 20e of the other connecting component 20 moves relative to the base 10 in the negative Y-axis direction. Thus, the two connecting components 20 can realize the degree of freedom of movement of the two first fixing frames 20c relative to the base 10 in the Y-axis direction, avoiding the first fixing frames 20c from causing the display screen 200 to move, and ensuring the reliability of the electronic device 1000.

[0219] The rotating shaft mechanism 130 shown in this embodiment adds a kinematic engagement between the first fixed frame 20c and the first swing arm 20e. During the rotation of the first swing arm 20e relative to the base 10, the first swing arm 20e slides relative to the first fixed frame 20c along the length and width directions of the first fixed frame 20c. The first swing arm 20e can be used as the main swing arm of the rotating shaft mechanism 130 to realize the closed-loop motion of the rotating shaft mechanism 130. Compared with the traditional main swing arm that engages with the base through a virtual axis, the first swing arm 20e engages with the base 10 through a real axis, reducing the thickness space occupied by the first swing arm 20e, which can reduce the thickness space of the rotating shaft mechanism 130 and help to achieve a thinner and lighter design of the electronic device 1000.

[0220] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Where there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

A rotating shaft mechanism characterized by comprising: The first swing arm comprises a first rotating part and a first sliding part, the first rotating part is rotationally connected with the base, the first rotating part is provided with a first screw groove, and the opening of the first screw groove is located on the peripheral surface of the first rotating part. In the process that the first rotating part rotates relative to the base, the first sliding part slides relative to the first fixed frame in the width direction and the length direction of the first fixed frame. The rotation shaft mechanism according to claim 1, wherein The rotating shaft mechanism further comprises a first connecting rod, one end of the first connecting rod is rotationally connected with the first fixed frame, and the other end of the first connecting rod is rotationally connected with the first sliding part. The rotation shaft mechanism according to claim 2, wherein When the rotating shaft mechanism is in the folded state, the included angle between the length direction of the connecting rod and the length direction of the first fixed frame is less than 90 degrees. The rotation shaft mechanism according to claim 1, wherein The first fixed frame is provided with a first sliding hole, the first sliding hole has an unfolded position and a folded position, and along the length direction of the first fixed frame, the folded position of the first sliding hole is located on one side of the unfolded position of the first sliding hole, and the folded position of the first sliding hole is also located on the side of the unfolded position of the first sliding hole which faces the base. The first sliding part is provided with a first sliding shaft, the first sliding shaft is arranged in the first sliding hole, when the rotating shaft mechanism is in the unfolded state, the first sliding shaft is located in the unfolded position of the first sliding hole, and when the rotating shaft mechanism is in the folded state, the first sliding shaft is located in the folded position of the first sliding hole. In the process that the first rotating part rotates relative to the base, the first sliding shaft slides in the first sliding hole relative to the first fixed frame. The rotation shaft mechanism according to claim 4, wherein The first sliding hole comprises a first sliding hole section and a second sliding hole section, along the length direction of the first fixed frame, the second sliding hole section is located on one side of the first sliding hole section, the second sliding hole section is also located on the side of the first sliding hole section which faces the base, and the second sliding hole section communicates with the first sliding hole section, wherein the unfolded position of the first sliding hole is located in the first sliding hole section, and the folded position of the first sliding hole is located in the second sliding hole section. The second sliding hole section protrudes towards the base, or the second sliding hole section is parallel to the length direction of the first fixed frame. The rotation shaft mechanism according to any one of claims 1 to 5, wherein The rotating shaft mechanism further comprises a second swing arm, along the length direction of the base, the second swing arm is located on one side of the first swing arm, the second swing arm comprises a second rotating part and a second sliding part, the second rotating part is rotationally connected with the base, and the second sliding part is slidingly connected with the first fixed frame. In the process that the second rotating part rotates relative to the base, the second sliding part slides relative to the first fixed frame in the width direction of the first fixed frame. The rotation shaft mechanism according to claim 6, wherein The first sliding part has a first limiting surface, the second sliding part is provided with a first limiting part, and the first limiting part is arranged on the side of the second sliding part which faces the first sliding part. The first limiting surface is located on the side of the first limiting portion away from the base and is arranged opposite the first limiting portion when the rotating shaft mechanism is in the folded state, and is configured to limit the sliding distance of the first limiting portion relative to the first fixed frame in the width direction of the first fixed frame. Pivot mechanism according to claim 6 or 7, characterized in that The rotating shaft mechanism further comprises a first door panel, which is rotationally connected with the first fixed support and is slidingly and rotationally connected with the first sliding portion or the second sliding portion. The rotation shaft mechanism according to any one of claims 1 to 5, wherein The rotating shaft mechanism comprises a first connecting assembly and a second connecting assembly, both of which comprise the first fixed frame and the first swing arm, and the first connecting assembly and the second connecting assembly are mirror-symmetric about a symmetry plane, wherein the symmetry plane is perpendicular to the length direction of the base. The rotation shaft mechanism according to any one of claims 1 to 9, wherein The first fixed frame is provided with a first sliding groove having a first limiting groove wall surface, and the included angle between the first limiting groove wall surface and the length direction of the first fixed frame is less than 90 degrees. The first sliding portion is mounted in the first sliding groove and can slide relative to the first fixed frame in the width direction and the length direction of the first fixed frame, and the first sliding portion has a first matching surface, and the included angle between the first matching surface and the length direction of the first sliding portion is less than 90 degrees. The first limiting groove wall surface and the first matching surface are arranged opposite each other when the rotating shaft mechanism is in the folded state, and are configured to limit the sliding distance of the first sliding portion relative to the first fixed frame in the width direction of the first fixed frame. The rotation shaft mechanism according to any one of claims 1 to 10, wherein The rotating shaft mechanism further comprises a second fixed frame and a third swing arm, and the base is further provided with a second spiral protrusion, the second fixed frame is located on one side of the base, the third swing arm comprises a third rotating portion and a third sliding portion, the third rotating portion is rotationally connected with the base, the third rotating portion is provided with a second spiral groove, and the opening of the second spiral groove is located on the peripheral surface of the third rotating portion, wherein the second spiral protrusion is screw-fitted in the second spiral groove, the third sliding portion is fixedly connected with the second rotating portion and slidingly connected with the second fixed frame. During rotation of the third rotating portion relative to the base, the third sliding portion slides relative to the second fixed frame in the width direction and the length direction of the second fixed frame. The rotation shaft mechanism according to claim 11, wherein The rotating shaft mechanism further comprises a first rotating shaft, a second rotating shaft, a cam support, a fixed support, a first elastic member and a second elastic member, the first rotating shaft and the second rotating shaft are both mounted on the base and are arranged in the width direction of the base. The first rotating portion is sleeved on the first rotating shaft and is provided with a first cam portion. The third rotating portion is sleeved on the second rotating shaft and is provided with a second cam portion. The cam support is sleeved on the first rotating shaft and the second rotating shaft, is slidable relative to the first rotating shaft and the second rotating shaft, and is located on the same side of the first rotating part and the third rotating part. The cam support is provided with a third cam part and a fourth cam part. The third cam part is arranged on one side of the cam support facing the first cam part and abuts against the first cam part. The fourth cam part is arranged on one side of the cam support facing the second cam part and abuts against the second cam part. The fixed support is sleeved on the first rotating shaft and the second rotating shaft, is fixed relative to the first rotating shaft and the second rotating shaft, and is located on one side of the cam support away from the first rotating part and the second rotating part and is spaced apart from the cam support. The first elastic member is sleeved on the first rotating shaft and abuts between the cam support and the fixed support. The second elastic member is sleeved on the second rotating shaft and abuts between the cam support and the fixed support. The rotation shaft mechanism according to claim 12, wherein The rotating shaft mechanism further comprises a synchronous support. The synchronous support is sleeved on the first rotating shaft and the second rotating shaft, is fixed relative to the first rotating shaft and the second rotating shaft, is located on one side of the first rotating part and the second rotating part away from the cam support, and abuts against the first rotating part and the second rotating part. An electronic device, characterized by comprising: The electronic device further comprises a display screen. The display screen comprises a first display part, a second display part, and a bendable part. The first display part is mounted on the first housing. The second display part is mounted on the second housing. The bendable part is connected between the first display part and the second display part and is arranged opposite the rotating shaft mechanism. The electronic device of claim 14, wherein The electronic device further comprises a display screen. The display screen comprises a first display part, a second display part, and a bendable part. The first display part is mounted on the first housing. The second display part is mounted on the second housing. The bendable part is connected between the first display part and the second display part and is arranged opposite the rotating shaft mechanism.

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