Rotating mechanism and foldable electronic equipment

Abstract

The invention discloses a rotating mechanism (100) and foldable electronic equipment (500). The rotating mechanism (100) comprises a fixed base (10), a synchronous assembly (60), a fixed frame (20), a main swing arm (30), a middle swing arm (40) and a pressing plate (50), wherein the fixed frame (20), the main swing arm (30), the middle swing arm (40) and the pressing plate (50) are arranged on the two opposite sides of the fixed base (10) in the width direction in a mirror image mode. The fixing frame (20) can rotate relative to the fixing base (10), one end of the main swing arm (30) is rotationally connected with the fixing base (10), the other end of the main swing arm (30) is rotationally connected with the middle swing arm (40), and the end, away from the main swing arm (30), of the middle swing arm (40) is rotationally connected with the fixing frame (20); the foldable electronic device (500) comprises a first shell (210), a second shell (220), a display screen (300) and a rotating mechanism (100), the problem that the thickness of the rotating mechanism (100) is large when the rotating mechanism (100) is in a folded state is solved, and the rotating mechanism (100) and the foldable electronic device (500) are light and thin.

Description

Rotating mechanism and foldable electronic device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 29, 2022, with application number 202211711390.4 and application name “Rotating Mechanism and Foldable Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of electronic products, and in particular to a rotating mechanism and a foldable electronic device. Background Art

[0003] With the development of science and technology, the appearance (ID) of electronic devices (such as mobile phones, tablets, etc.) has tended to develop from candy-bar phones to foldable phones. Foldable phones have a large screen when open, which fully satisfies the visual experience of consumers. When closed, they are small and easy to carry. In the existing foldable phones, the rotation scheme used is mostly to achieve virtual axis rotation by rotating the swing arm and the base through the slider. Due to the constraints involved in this scheme, when folded, the swing arm will protrude a distance in the folded thickness direction of the entire device, which will make the foldable phone thick, which is not conducive to achieving the thinness of the foldable phone.

[0004] Summary of the Invention

[0005] The present application provides a rotating mechanism and a foldable electronic device to solve the technical problem in the prior art that the rotating mechanism is thick when in a folded state.

[0006] In a first aspect, the present application provides a rotation mechanism comprising: a fixed base, a first fixed frame, a second fixed frame, a first main swing arm, and a first intermediate swing arm. The first and second fixed frames are located on opposite sides of the fixed base in the width direction and are rotatable relative to the fixed base, with the first and second fixed frames rotating in opposite directions. One end of the first main swing arm is rotationally connected to the fixed base, the other end of the first main swing arm is rotationally connected to the first intermediate swing arm, and the end of the first intermediate swing arm, distal from the first main swing arm, is rotationally connected to the first fixed frame.

[0007] The rotating mechanism is applied to a foldable electronic device, which includes a first shell, a second shell and a display screen. The first shell is connected to a first fixed frame, and the second shell is connected to a second fixed frame. The rotating mechanism is located between the first shell and the second shell, and enables the first shell and the second shell to be rotatably connected. The rotation of the rotating mechanism can drive the first shell and the second shell to rotate relative to each other. The first shell and the second shell are also provided with a receiving groove, which is used to accommodate electronic components and structural elements such as processors, circuit boards, and camera modules of the electronic device. When the rotating mechanism is in a folded state, the first fixed frame and the second fixed frame are folded relative to each other, and the display screen is bent. When the rotating mechanism is in an unfolded state, the first fixed frame and the second fixed frame are flattened relative to the fixed base, and the angle between the first fixed frame and the second fixed frame is close to 180 degrees. The display screen is unfolded, and the display screen has a large display area, realizing a large-screen display of the foldable electronic device and improving the user experience.

[0008] In this embodiment, by arranging a first intermediate swing arm between the first main swing arm and the first fixed frame, when the first fixed frame and the first main swing arm rotate relative to the fixed base, the first intermediate swing arm can rotate relative to the first main swing arm to compensate for the rotation angle of the first main swing arm relative to the fixed base, reduce the rotation angle of the first main swing arm relative to the fixed base, thereby reducing the distance that the first main swing arm protrudes from the side of the fixed base when the rotating mechanism is in the folded state, and further reduce the space occupied by the first main swing arm in the thickness direction when the rotating mechanism is in the folded state, reduce the thickness of the rotating mechanism when it is in the folded state, and realize the lightweight and thinness of the foldable electronic device.

[0009] In one possible embodiment, the fixed base includes a first side and a second side, and the first side and the second side are respectively located on opposite sides of the fixed base in the width direction; the rotating mechanism includes a folded state, and when the rotating mechanism is in the folded state, the first main swing arm is located between the first side and the second side.

[0010] In this embodiment, when the rotating mechanism is in the folded state, by locating the first main swing arm between the first side and the second side, it is possible to avoid the first main swing arm protruding from the side of the fixed base when the rotating mechanism is in the folded state, thereby reducing the space occupied by the first main swing arm in the thickness direction of the rotating mechanism, and further reducing the thickness of the rotating mechanism when it is in the folded state, thereby achieving a lightweight and thin foldable electronic device.

[0011] In a possible implementation manner, when the rotating mechanism is in a folded state, the first intermediate swing arm is inclined relative to the first main swing arm toward the fixed base.

[0012] In this embodiment, by setting the first intermediate swing arm to be inclined relative to the first main swing arm toward the fixed base when the rotating mechanism is in the folded state, the rotation angle of the first main swing arm relative to the fixed base when the rotating mechanism is in the folded state can be compensated, thereby reducing the distance that the first main swing arm protrudes from the side of the fixed base when the rotating mechanism is in the folded state, reducing the space occupied by the first main swing arm in the thickness direction when the rotating mechanism is in the folded state, and reducing the thickness of the rotating mechanism when it is in the folded state.

[0013] In a possible embodiment, the rotating mechanism also includes a flattened state. When the rotating mechanism is in the flattened state, the first fixed frame is unfolded relative to the second fixed frame. When the first fixed frame and the second fixed frame rotate toward the fixed base, the first fixed frame drives the first intermediate swing arm to rotate relative to the fixed base, and causes the first intermediate swing arm to rotate relative to the first fixed frame. The rotation of the first intermediate swing arm drives the first main swing arm to rotate relative to the fixed base, and causes the first main swing arm to rotate relative to the first intermediate swing arm, so that the first fixed frame is folded relative to the second fixed frame, and the rotating mechanism is in the folded state.

[0014] When the rotating mechanism is in the flattened state, the first fixed frame unfolds relative to the second fixed frame, jointly supporting the foldable portion of the display screen to ensure a smooth display. In this embodiment, when the rotating mechanism rotates from the folded state to the flattened state, the first fixed frame, the first intermediate swing arm, and the first main swing arm all rotate toward the fixed base. Simultaneously, the first intermediate swing arm also rotates relative to the first main swing arm. This reduces the rotation angle of the first main swing arm relative to the fixed base during the rotation of the rotating mechanism from the folded state to the flattened state, reduces the distance that the first main swing arm protrudes from the side of the fixed base when the rotating mechanism is in the folded state, and reduces the space occupied by the first main swing arm in the thickness direction when the rotating mechanism is in the folded state. In other words, the thickness of the rotating mechanism in the folded state is reduced, thereby achieving a lighter and thinner foldable electronic device.

[0015] In one possible embodiment, the first main swing arm includes a first rotating body and a first stop block, wherein the first stop block is fixedly connected to one end of the first rotating body. The first stop block and the first rotating body are both mounted within the fixed base and are rotatable within the fixed base. The end of the first rotating body remote from the first stop block is rotatably connected to the first intermediate swing arm. When the rotating mechanism is in the folded state, the first stop block abuts against the fixed base.

[0016] In this embodiment, by setting a first stop block on the first main swing arm, the first main swing arm can be stopped to prevent the first main swing arm from falling out of the fixed base when the rotating mechanism is in a folded state, thereby improving the stability of the rotating mechanism structure.

[0017] In one possible embodiment, the rotation mechanism further includes a second main swing arm and a second intermediate swing arm, the second main swing arm being disposed opposite the first main swing arm, one end of the second main swing arm being rotationally connected to the fixed base, the other end of the second main swing arm being rotationally connected to the second intermediate swing arm, and one end of the second intermediate swing arm, distal from the second main swing arm, being rotationally connected to the second fixed bracket. When the second fixed bracket rotates relative to the fixed base, it drives the second intermediate swing arm relative to the fixed base and causes the second intermediate swing arm to rotate relative to the second fixed bracket. The rotation of the second intermediate swing arm drives the second main swing arm relative to the fixed base and causes the second main swing arm to rotate relative to the second intermediate swing arm.

[0018] In this embodiment, a second intermediate swing arm is provided between the second main swing arm and the second fixed frame. When the second fixed frame and the second main swing arm rotate relative to the fixed base, the second intermediate swing arm can rotate relative to the second main swing arm to compensate for the rotation angle of the second main swing arm relative to the fixed base, reduce the rotation angle of the second main swing arm relative to the fixed base, thereby reducing the distance that the second main swing arm protrudes from the side of the fixed base when the rotating mechanism is in the folded state, and further reduce the space occupied by the second main swing arm in the thickness direction when the rotating mechanism is in the folded state, further reduce the thickness of the rotating mechanism when it is in the folded state, and further realize the lightweight and thinness of the foldable electronic device.

[0019] In one possible embodiment, the rotating mechanism further includes a first pressure plate and a second pressure plate, the first pressure plate being slidably and rotatably connected to the first fixing frame, and when the first fixing frame rotates relative to the fixed base, it can drive the first pressure plate to rotate relative to the fixed base, and cause the first pressure plate to rotate and slide relative to the first fixing frame; the second pressure plate is slidably connected to the second fixing frame, and when the second pressure plate rotates relative to the fixed base, it can drive the second pressure plate to rotate relative to the fixed base, and cause the second pressure plate to rotate and slide relative to the second fixing frame.

[0020] In this embodiment, by providing the first pressing plate and the second pressing plate, when the rotating mechanism is in the flattened state, the first pressing plate and the second pressing plate jointly support the display screen, thereby increasing the stability of the display screen connection to ensure good display of the display screen.

[0021] In one possible embodiment, the first main swing arm and the first pressure plate are arranged side by side along the length direction of the fixed base, and the first main swing arm and the first pressure plate are rotatably and slidably connected; when the first pressure plate and the first main swing arm rotate relative to the fixed base, the first main swing arm also rotates and slides relative to the first pressure plate.

[0022] In this embodiment, the first pressure plate is slidably and rotationally connected to the first main swing arm, allowing the first pressure plate and the first main swing arm to rotate simultaneously relative to the fixed base, thereby achieving rotation of the first pressure plate relative to the fixed base, thereby improving the stability of the first pressure plate's rotation. Furthermore, the pressure plate swing arm can be eliminated. That is, in this embodiment, stable rotation of the first pressure plate can be achieved without the need for a pressure plate swing arm, thereby simplifying the structure of the rotation mechanism and facilitating the thinness and lightness of foldable electronic devices.

[0023] In one possible embodiment, a first shaft is provided on the side of the first main swing arm, the first shaft extends toward the first pressure plate, and the extension direction of the first shaft is parallel to the length direction of the fixed base; the first pressure plate is provided with a first sliding hole, the extension of the first sliding hole intersects with the width direction of the fixed base, the first shaft is installed in the first sliding hole, and can rotate and slide in the first sliding hole.

[0024] In this embodiment, a first shaft is provided on the side of the first main swing arm, a first sliding hole is provided on the first pressure plate, and the first shaft is installed in the first sliding hole, so that when the first main swing arm rotates relative to the first pressure plate, the first shaft rotates and slides in the first sliding hole, thereby improving the stability of the connection between the first main swing arm and the first pressure plate.

[0025] In one possible embodiment, the first intermediate swing arm and the first pressure plate are arranged side by side along the length direction of the fixed base, and the first intermediate swing arm and the first pressure plate are rotatably and slidingly connected; when the first pressure plate and the first intermediate swing arm rotate relative to the fixed base, the first intermediate swing arm also rotates and slides relative to the first pressure plate.

[0026] In this embodiment, the first pressure plate is connected to the first intermediate swing arm in a sliding and rotational manner, so that the first pressure plate can rotate relative to the fixed base at the same time as the first intermediate swing arm, thereby realizing the rotation of the first pressure plate relative to the fixed base, thereby further improving the stability of the rotation of the first pressure plate.

[0027] In one possible embodiment, a second shaft is provided on the side of the first intermediate swing arm, the second shaft extends toward the first pressure plate, and the extension direction of the second shaft is parallel to the length direction of the fixed base; the first pressure plate is provided with a second sliding hole, the extension direction of the second sliding hole is parallel to the extension direction of the first sliding hole, the second shaft is installed in the second sliding hole, and can rotate and slide in the second sliding hole.

[0028] In this embodiment, a second shaft is set on the side of the first intermediate swing arm, a second sliding hole is set on the first pressure plate, and the second shaft is installed in the second sliding hole. When the first intermediate swing arm rotates relative to the first pressure plate, the second shaft rotates and slides in the second sliding hole, thereby improving the stability of the connection between the first intermediate swing arm and the first pressure plate.

[0029] In one possible embodiment, the second main swing arm and the second pressure plate are arranged side by side along the length direction of the fixed base, and the second main swing arm and the second pressure plate are rotatably and slidingly connected; when the second pressure plate and the second main swing arm rotate relative to the fixed base, the second main swing arm also rotates and slides relative to the second pressure plate.

[0030] In this embodiment, the second pressure plate is slidably and rotationally connected to the second main swing arm, allowing the second pressure plate and the second main swing arm to rotate simultaneously relative to the fixed base, thereby achieving rotation of the second pressure plate relative to the fixed base, thereby improving the stability of the second pressure plate's rotation. Furthermore, the pressure plate swing arm can be eliminated. That is, in this embodiment, stable rotation of the second pressure plate can be achieved without the need for a pressure plate swing arm, thereby simplifying the structure of the rotation mechanism and facilitating the thinness and lightness of foldable electronic devices.

[0031] In one possible embodiment, the second intermediate swing arm and the second pressure plate are arranged side by side along the length direction of the fixed base, and the second intermediate swing arm and the second pressure plate are rotatably and slidingly connected; when the second pressure plate and the second intermediate swing arm rotate relative to the fixed base, the second intermediate swing arm also rotates and slides relative to the first pressure plate.

[0032] In this embodiment, the second pressure plate is connected to the second intermediate swing arm in a sliding and rotational manner, so that the second pressure plate can rotate relative to the fixed base at the same time as the second intermediate swing arm, thereby realizing the rotation of the second pressure plate relative to the fixed base, thereby further improving the stability of the rotation of the second pressure plate.

[0033] In one possible embodiment, the rotation mechanism further includes a synchronization assembly, comprising a first synchronization swing arm, a second synchronization swing arm, and a synchronization gear. The first synchronization swing arm and the second synchronization swing arm are respectively located on opposite sides of the synchronization gear and fixedly connected to the synchronization gear. The synchronization gear is mounted within the fixed base, and the first synchronization swing arm is slidably connected to the first fixed frame, while the second synchronization swing arm is slidably connected to the second fixed frame. When the first fixed frame rotates relative to the fixed base, it can drive the first synchronization swing arm to rotate relative to the fixed base, thereby driving the second synchronization swing arm to rotate relative to the fixed base via the synchronization gear, thereby driving the second synchronization swing arm to rotate relative to the fixed base.

[0034] In this embodiment, by setting up a synchronization component, when the first synchronization swing arm rotates, the second synchronization swing arm can be driven to rotate through the synchronization gear, thereby realizing the synchronous rotation of the first synchronization swing arm and the second synchronization swing arm, and then realizing the synchronous rotation of the rotating mechanism and the foldable electronic device.

[0035] In one possible embodiment, the synchronization assembly further includes a damping spring, a first hinge seat, and a second hinge seat. The damping spring is mounted on the fixed base, and the first hinge seat and the second hinge seat are both fixedly connected to the damping spring. The first synchronization swing arm includes a first hinge body, which is hinged to the first hinge seat, and the second synchronization swing arm includes a second hinge body, which is hinged to the second hinge seat. When the first synchronization swing arm rotates relative to the fixed base, the first hinge body abuts the first hinge seat. When the second synchronization swing arm rotates relative to the fixed base, the second hinge body abuts the second hinge seat. The first hinge seat and the second hinge seat jointly compress the damping spring, causing the damping spring to generate an elastic force.

[0036] In this embodiment, a damping spring is provided, and a first hinge is provided on the first synchronous swing arm, and a second hinge is provided on the second synchronous swing arm, so that when the first synchronous swing arm and the second synchronous swing arm rotate, the first hinge seat and the second hinge seat are repeatedly squeezed to repeatedly squeeze the damping spring to generate an elastic force, and the elastic restoring force generated by the elastic force in turn acts on the first synchronous swing arm and the second synchronous swing arm, thereby providing a damping force for the rotation of the first synchronous swing arm and the second synchronous swing arm, so as to enhance the damping feel when the user uses it and improve the user's experience.

[0037] The present application also provides a foldable electronic device, including a first shell, a second shell, a display screen and the above-mentioned rotating mechanism, wherein the rotating mechanism is connected between the first shell and the second shell, and the display screen is installed on the first shell, the second shell and the rotating mechanism. When the rotating mechanism rotates, the first shell and the second shell rotate relative to each other, thereby driving the display screen to bend or unfold.

[0038] When the foldable electronic device is in the flattened state, the first shell, the second shell, and the rotating mechanism jointly support the display screen, thereby ensuring normal display of the display screen, while also achieving a large-screen display and improving the user experience. When the foldable electronic device is in the folded state, the foldable portion of the display screen bends, and the first portion and the second portion are arranged relative to each other. At this time, the display screen is located between the first shell and the second shell, and the exposed area of ​​the display screen is small, which can greatly reduce the probability of damage to the display screen and achieve effective protection for the display screen. At the same time, in this embodiment, by providing a first intermediate swing arm between the first fixed frame and the first main swing arm of the rotating mechanism, the rotation angle of the first main swing arm relative to the fixed base can be reduced, thereby reducing the thickness of the foldable electronic device when in the folded state, and achieving a lightweight and thin foldable electronic device.

[0039] In summary, in the present application, by arranging the first intermediate swing arm between the first main swing arm and the first fixed frame, when the first fixed frame and the first main swing arm rotate relative to the fixed base, the first intermediate swing arm can rotate relative to the first main swing arm to compensate for the rotation angle of the first main swing arm relative to the fixed base, reduce the rotation angle of the first main swing arm relative to the fixed base, thereby reducing the distance that the first main swing arm protrudes from the side of the fixed base when the rotating mechanism is in the folded state, and further reduce the space occupied by the first main swing arm in the thickness direction when the rotating mechanism is in the folded state, reduce the thickness of the rotating mechanism when it is in the folded state, and realize the lightweight and thin foldable electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0041] FIG1 is a schematic structural diagram of a foldable electronic device in a first state provided by an embodiment of the present application;

[0042] FIG2 is a schematic structural diagram of a foldable electronic device in a second state provided by an embodiment of the present application;

[0043] FIG3 is a schematic structural diagram of a foldable electronic device in a third state provided by an embodiment of the present application;

[0044] FIG4 is a schematic diagram of the exploded structure of the foldable electronic device shown in FIG3 ;

[0045] FIG5 is a schematic structural diagram of a rotating mechanism in the foldable electronic device shown in FIG4 ;

[0046] FIG6 is a schematic diagram of the exploded structure of the rotating mechanism shown in FIG5 ;

[0047] FIG7 is a schematic diagram of the exploded structure of the fixed base in the rotating mechanism of FIG6;

[0048] FIG8 is a partially enlarged structural schematic diagram of the fixed base shown in FIG7;

[0049] FIG9 is an enlarged structural diagram of the fixing frame in the rotating mechanism shown in FIG6 ;

[0050] FIG10 is an enlarged structural diagram of the first swing arm assembly in the rotating mechanism shown in FIG6;

[0051] FIG11 is a schematic diagram of a portion of the structure of the rotating mechanism in FIG5 in a flattened state;

[0052] FIG12 is a schematic cross-sectional view of the rotating mechanism shown in FIG5 in a flattened state;

[0053] FIG13 is a schematic cross-sectional view of the rotating mechanism shown in FIG12 in a folded state;

[0054] FIG14 is an enlarged structural diagram of the pressure plate in the rotating mechanism shown in FIG6;

[0055] FIG15 is a schematic cross-sectional view of the rotating mechanism shown in FIG5 ;

[0056] FIG16 is a schematic cross-sectional view of the rotating mechanism shown in FIG15 in a folded state;

[0057] FIG17 is a schematic diagram of the exploded structure of the synchronization assembly in the rotating mechanism shown in FIG6;

[0058] FIG18 is a schematic structural diagram of the rotating mechanism shown in FIG5 in a folded state;

[0059] FIG19 is a schematic diagram of a partial structure of a rotation mechanism provided in a second embodiment of the present application;

[0060] FIG20 is a schematic diagram of a partially exploded structure of the rotating mechanism shown in FIG19;

[0061] FIG21 is a partial structural diagram of a rotation mechanism provided in a third embodiment of the present application;

[0062] FIG22 is a schematic diagram of a partially exploded structure of the rotating mechanism shown in FIG21;

[0063] FIG23 is a schematic diagram of a partial structure of a rotating mechanism provided in a fourth embodiment of the present application;

[0064] FIG24 is a schematic diagram of a partially exploded structure of the rotating mechanism shown in FIG23;

[0065] FIG25 is a schematic diagram of a partial structure of a rotation mechanism provided in a fifth embodiment of the present application;

[0066] FIG26 is a schematic diagram of a partially exploded structure of the rotating mechanism shown in FIG25;

[0067] FIG27 is a partial structural diagram of a rotation mechanism provided in a sixth embodiment of the present application;

[0068] FIG28 is a schematic diagram of a partially exploded structure of the rotating mechanism shown in FIG27 . DETAILED DESCRIPTION

[0069] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0070] Please refer to Figures 1 to 3. Figure 1 is a structural schematic diagram of the foldable electronic device 500 provided in an embodiment of the present application in a first state, Figure 2 is a structural schematic diagram of the foldable electronic device 500 provided in an embodiment of the present application in a second state, and Figure 3 is a structural schematic diagram of the foldable electronic device 500 provided in an embodiment of the present application in a third state.

[0071] For ease of description, the width direction of the foldable electronic device 500 is defined as the X direction, the length direction of the foldable electronic device 500 is defined as the Y direction, and the thickness direction of the foldable electronic device 500 is defined as the Z direction. The X direction, the Y direction, and the Z direction are perpendicular to each other.

[0072] The foldable electronic device 500 includes, but is not limited to, a cell phone, a notebook computer, a tablet personal computer, a laptop computer, a personal digital assistant, a wearable device, or a mobile device. In the embodiments of the present application, the foldable electronic device 500 is described as a cell phone.

[0073] FIG1 shows a foldable electronic device 500 in a folded state, FIG2 shows a foldable electronic device 500 in a semi-expanded state, and FIG3 shows a foldable electronic device 500 in a flattened state. Specifically, the unfolding angle α of the foldable electronic device 500 shown in FIG2 is 90 degrees, and the unfolding angle β of the foldable electronic device 500 shown in FIG3 is 180 degrees.

[0074] It should be noted that the angles illustrated in the embodiments of the present application are all allowed to have slight deviations. For example, the unfolding angle α of the foldable electronic device 500 shown in Figure 2 is 90 degrees, which means that α can be 90 degrees, or approximately 90 degrees, such as 80 degrees, 85 degrees, 95 degrees, or 100 degrees. The unfolding angle β of the foldable electronic device 500 shown in Figure 3 is 180 degrees, which means that β can be 180 degrees, or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees. The angles illustrated in the following examples can be understood in the same way.

[0075] The foldable electronic device 500 shown in the embodiment of the present application is an electronic device that can be folded once. In other embodiments, the foldable electronic device 500 can also be an electronic device that can be folded multiple times (more than twice). In this case, the foldable electronic device 500 can include multiple parts, where two adjacent parts can be folded relatively close together until the foldable electronic device 500 is in a folded state, and two adjacent parts can be unfolded relatively far apart until the foldable electronic device 500 is in a flat state.

[0076] Please refer to FIG. 4 , which is a schematic diagram of the exploded structure of the foldable electronic device 500 shown in FIG. 3 .

[0077] The foldable electronic device 500 includes a folding device 200 and a display screen 300, which is mounted on the folding device 200. The display screen 300 includes a display surface 340 and a mounting surface 350, which are arranged opposite to each other. The display surface 340 is used to display text, images, and videos. The display screen 300 includes a first portion 310, a second portion 320, and a foldable portion 330. The foldable portion 330 is located between the first portion 310 and the second portion 320, and the foldable portion 330 can be bent along the Y direction. The first portion 310, the second portion 320, and the foldable portion 330 together constitute the display screen 300. In this embodiment, the display screen 300 uses a flexible display screen, for example, an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MLED) display screen, or a quantum dot light-emitting diode (QLED) display screen.

[0078] The folding device 200 includes a first housing 210, a second housing 220, and a rotating mechanism 100. The first housing 210 is provided with a first receiving groove 230, and the second housing 220 is provided with a second receiving groove 240. The first receiving groove 230 and the second receiving groove 240 communicate with each other to form the receiving groove of the rotating mechanism 100. The rotating mechanism 100 is mounted in the receiving groove and fixedly connected to the first and second housings 210, 220 to achieve a rotational connection between the first and second housings 210, 220. The display screen 300 is mounted on the folding device 200, and the mounting surface 350 is fixedly connected to the folding device 200. Specifically, the first housing 210 supports the first portion 310 of the display screen 300, and the second housing 220 supports the second portion 320. In other words, the first portion 310 is mounted on the first housing 210, and the second portion 320 is mounted on the second housing 220. The rotating mechanism 100 is disposed opposite the foldable portion 330. The first shell 210 and the second shell 220 can rotate relative to each other through the rotating mechanism 100, so that the folding device 200 can switch between the folded state and the flattened state.

[0079] 1 , the first housing 210 and the second housing 220 rotate relative to each other via the rotation mechanism 100. As the first housing 210 and the second housing 220 move closer together, the display screen 300 folds, thereby folding the foldable electronic device 500. When the foldable electronic device 500 is in the folded state, the foldable portion 330 of the display screen 300 bends, and the first portion 310 and the second portion 320 are positioned relative to each other. At this point, the display screen 300 is positioned between the first housing 210 and the second housing 220, significantly reducing the risk of damage to the display screen 300 and effectively protecting it.

[0080] Referring to Figures 2 and 4 , the first housing 210 and the second housing 220 rotate relative to each other via the rotating mechanism 100. As the first housing 210 and the second housing 220 move away from each other, the display screen 300 unfolds, allowing the foldable electronic device 500 to unfold to a semi-expanded state. When the foldable electronic device 500 is in the semi-expanded state, the first housing 210 and the second housing 220 unfold to an angle α, the first portion 310 and the second portion 320 unfold relative to each other, and the foldable portion 330 unfolds. At this point, the angle between the first portion 310 and the second portion 320 is α. In this embodiment, α is 90 degrees. In other embodiments, α may also be approximately 90 degrees, or may be 80 degrees, 85 degrees, 95 degrees, or 100 degrees, etc.

[0081] Referring to Figures 3 and 4 , the first housing 210 and the second housing 220 rotate relative to each other via the rotation mechanism 100. As the first and second housings 210, 220 move away from each other, the display screen 300 further unfolds until the foldable electronic device 500 is flattened. When the folding mechanism 200 is in the flattened state, the angle β between the first and second housings 210, 220 is β. The foldable portion 330 unfolds, with the first and second portions 310, 320 relatively unfolded. At this point, the angles β between the first, second, and foldable portions 310, 320, and 330 are all β. This creates a large display area for the foldable electronic device 500, enabling a large-screen display and improving the user experience. In this embodiment, β is 180 degrees. In other embodiments, β may also be approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, or 190 degrees.

[0082] It should be noted that angles α and β are both the angles between the first housing 210 and the second housing 220. These angles are used to distinguish the angles between the first housing 210 and the second housing 220 in different states of the foldable electronic device 500. Angle α refers to the angle between the first housing 210 and the second housing 220 when the foldable electronic device 500 is in the semi-expanded state; angle β refers to the angle between the first housing 210 and the second housing 220 when the foldable electronic device 500 is in the flattened state.

[0083] Please refer to FIG. 5 and FIG. 6 . FIG. 5 is a schematic structural diagram of the rotating mechanism 100 in the foldable electronic device 500 shown in FIG. 4 , and FIG. 6 is a schematic exploded structural diagram of the rotating mechanism 100 shown in FIG. 5 .

[0084] For ease of description, the present application sets a symmetry axis O (as shown in FIG5 ), wherein the symmetry axis O is perpendicular to the X direction and passes through the center of the rotating mechanism 100 , and the rotating mechanism 100 is axisymmetric about the symmetry axis O.

[0085] The rotating mechanism 100 includes a fixed base 10, a swing arm assembly 1, a synchronization assembly 60, a fixed frame 20 and a pressure plate 50. The swing arm assembly 1 is mounted on the fixed base 10 and is rotatably and slidably connected to the fixed base 10. At the same time, the swing arm assembly 1 is also rotatably connected to the fixed frame 20. The pressure plate 50 is mounted on the fixed frame 20 and is slidably connected to the fixed frame 20, and the pressure plate 50 is rotatably and slidably connected to the swing arm assembly 1. The synchronization assembly 60 is mounted on the fixed base 10 and can rotate relative to the fixed base 10, and the synchronization assembly 60 is slidably connected to the fixed frame 20. When the fixed frame 20 rotates relative to the fixed base 10, it drives the swing arm assembly 1, the synchronization assembly 60 and the pressure plate 50 to rotate relative to the fixed base 10, thereby realizing the rotation of the rotating mechanism 100 and enabling the rotating mechanism 100 to switch between a folded state and a flattened state.

[0086] The fixing frame 20 includes a first fixing frame 21 and a second fixing frame 22. The first fixing frame 21 and the second fixing frame 22 are located on opposite sides of the fixing base 10 in the X direction. The first fixing frame 21 is fixedly connected to the first housing 210, and the second fixing frame 22 is fixedly connected to the second housing 220. The pressure plate 50 includes a first pressure plate 51 and a second pressure plate 52. The first pressure plate 51 and the second pressure plate 52 are located on opposite sides of the fixing base 10 in the X direction. The first pressure plate 51 is connected to the first fixing frame 21 in a rotational and sliding manner, and the second pressure plate 52 is connected to the second fixing frame 22 in a rotational and sliding manner.

[0087] In this embodiment, there are two swing arm assemblies 1. The two swing arm assemblies 1 are a first swing arm assembly 101 and a second swing arm assembly 102. The first swing arm assembly 101 and the second swing arm assembly 102 are arranged in sequence along the Y direction. The first swing arm assembly 101 is located on the positive side of the Y axis of the fixed base 10, and the second swing arm assembly 102 is located on the negative side of the Y axis of the fixed base 10. In other embodiments, the number of swing arm assemblies 1 can also be one, three, or more than four. This application does not impose any specific restrictions on the number of swing arm assemblies 1.

[0088] The first swing arm assembly 101 includes a main swing arm 30 and an intermediate swing arm 40. The main swing arm 30 includes a first main swing arm 31 and a second main swing arm 32, and the intermediate swing arm 40 includes a first intermediate swing arm 41 and a second intermediate swing arm 42. The first main swing arm 31 and the second main swing arm 32 are respectively mounted on opposite sides of the fixed base 10 in the X-direction and are rotationally and slidably connected to the fixed base 10. The first intermediate swing arm 41 is rotationally connected to the first main swing arm 31 and the first fixed frame 21. The first intermediate swing arm 41 and the first main swing arm 31 are also rotationally and slidably connected to the first pressure plate 51. The second intermediate swing arm 42 is rotationally connected to the second main swing arm 32 and the second fixed frame 22. The second intermediate swing arm 42 and the second main swing arm 32 are also rotationally and slidably connected to the second pressure plate 52.

[0089] The structure of the second swing arm assembly 102 can be the same or similar assembly, a symmetrical or partially symmetrical structure, or a different structure as that of the first swing arm assembly 101. In this embodiment, the second swing arm assembly 102 includes a main swing arm 30A and an intermediate swing arm 40A. The main swing arm 30A includes a first main swing arm 31A and a second main swing arm 32A. The intermediate swing arm 40A includes a first intermediate swing arm 41A and a second intermediate swing arm 42A. The basic structure of each component in the second swing arm assembly 102, the connection relationship between the components, and the connection relationship between the components and components outside the assembly can all refer to the relevant design of the first swing arm assembly 101. The second swing arm assembly 102 and the first swing arm assembly 101 can be the same or different in the detailed structure or position arrangement of the components. This application does not make specific restrictions on this.

[0090] When the first fixing frame 21 rotates relative to the fixed base 10, it drives the first intermediate swing arm 41 to rotate, thereby driving the first main swing arm 31 to rotate and slide relative to the fixed base 10. Simultaneously, when the first fixing frame 21 rotates relative to the fixed base 10, it also drives the first pressure plate 51 to rotate relative to the fixed base 10. When the second fixing frame 22 rotates relative to the fixed base 10, it drives the second intermediate swing arm 42 to rotate, thereby driving the second main swing arm 32 to rotate and slide relative to the fixed base 10. Simultaneously, when the second fixing frame 22 rotates relative to the fixed base 10, it also drives the second pressure plate 52 to rotate relative to the fixed base 10.

[0091] The synchronization assembly 60 is mounted on the fixed base 10 and is slidably connected to the fixed frame 20. In this embodiment, there is one synchronization assembly 60. In other embodiments, there may be two or more synchronization assemblies 60. The synchronization assembly 60 includes a synchronization member 61, a damping member 62, a first synchronization swing arm 63, and a second synchronization swing arm 64. The synchronization member 61 and the damping member 62 are both mounted within the fixed base 10. The synchronization swing arm is hinged to the damping member 62 and is rotationally connected to the synchronization member 61. The first synchronization swing arm 63 and the second synchronization swing arm 64 are respectively located on opposite sides of the fixed base 10 in the X direction, and the first synchronization swing arm 63 is slidably connected to the first fixed frame 21, and the second synchronization swing arm 64 is slidably connected to the second fixed frame 22. When the first fixed frame 21 rotates relative to the fixed base 10, it drives the first synchronization swing arm 63 to rotate and generates a force on the damping member 62, causing the damping member 62 to generate a damping force. Simultaneously, the rotation of the first synchronous swing arm 63 drives the synchronous member 61, which in turn drives the second synchronous swing arm 64, which in turn drives the second fixing frame 22, thereby achieving synchronous rotation of the rotating mechanism 100. During the rotation of the foldable electronic device 500, the damping member 62 provides a damping force, providing users with a better damping feel and enhancing their experience. When the damping force reaches a certain value, the foldable electronic device 500 can also be hovered at a preset angle.

[0092] Please refer to FIG. 7 and FIG. 8 . FIG. 7 is an exploded structural diagram of the fixed base 10 in the rotating mechanism 100 shown in FIG. 6 , and FIG. 8 is a partially enlarged structural diagram of the fixed base 10 shown in FIG. 7 .

[0093] The fixed base 10 includes a lower housing 11 and an upper housing 12. The lower housing 11 includes a bottom plate 111, a first side plate 112, a second side plate 113, a first end plate 114, and a second end plate 115. The first side plate 112 and the second side plate 113 are located on opposite sides of the bottom plate 111 in the X direction and are fixedly connected to the bottom plate 111. The first end plate 114 and the second end plate 115 are located on opposite sides of the bottom plate 111 in the Y direction and are fixedly connected to the bottom plate 111. The first end plate 114 and the second end plate 115 are connected between the first side plate 112 and the second side plate 113.

[0094] The bottom plate 111 is provided with a first rotation groove 116 and a second rotation groove 117. The first rotation groove 116 and the second rotation groove 117 are arranged side by side along the X direction, and the first rotation groove 116 and the second rotation groove 117 are symmetrical about the symmetry axis O. The bottom walls of the first rotation groove 116 and the second rotation groove 117 are both arc-shaped. The first rotation groove 116 extends toward the first side plate 112, and the second rotation groove 117 extends toward the second side plate 113. The first rotation groove 116 is used to install the first main swing arm 31 in the first swing arm assembly 101, and the first main swing arm 31 can rotate and slide along the first rotation groove 116. The second rotation groove 117 is used to install the second main swing arm 32 in the first swing arm assembly 101, and the second main swing arm 32 can rotate and slide along the second rotation groove 117.

[0095] The base plate 111 is further provided with a third rotation slot 118 and a fourth rotation slot 119. The third rotation slot 118 and the fourth rotation slot 119 are arranged side by side along the X-direction and are symmetrical about the axis of symmetry O. The third rotation slot 118 is arranged side by side with the first rotation slot 116 along the Y-direction and spaced apart therefrom. The third rotation slot 118 is located in the positive Y-axis direction of the first rotation slot 116. The fourth rotation slot 119 is arranged side by side with the second rotation slot 117 along the Y-direction and is located in the positive Y-axis direction of the second rotation slot 117. The third rotation slot 118 is used to mount the first main swing arm 31A of the second swing arm assembly 102. The first main swing arm 31A can rotate and slide along the third rotation slot 118. The fourth rotation slot 119 is used to mount the second main swing arm 32A of the second swing arm assembly 102. The second main swing arm 32A can rotate and slide along the fourth rotation slot 119.

[0096] The upper housing 12 includes a first sub-housing 12A, a second sub-housing 12B, and a third sub-housing 12C. The first sub-housing 12A is provided with a first avoidance hole 121, a first opening 122, and a second opening 123. The first opening 122 and the second opening 123 are located on opposite sides of the first sub-housing 12A in the X direction. The first avoidance hole 121 is located between the first opening 122 and the second opening 123, and is spaced apart from the first opening 122 and the second opening 123. The first avoidance hole 121 extends through the first sub-housing 12A in the Z direction.

[0097] The first sub-housing 12A is located at one end of the lower housing 11 in the negative direction of the Y-axis, is arranged opposite the first rotation groove 116 and the second rotation groove 117, and is fixedly connected to the lower housing 11. The first opening 122 is located at the end of the first rotation groove 116 and is in communication with the first rotation groove 116. The second opening 123 is located at the end of the second rotation groove 117 and is in communication with the second rotation groove 117. The first opening 122 is used for the first main swing arm 31 to pass through, so that the first main swing arm 31 can be installed in the first rotation groove 116. The second opening 123 is used for the second main swing arm 32 to pass through, so that the second main swing arm 32 can be installed in the second rotation groove 117. The first avoidance hole 121 is used to avoid the first main swing arm 31 and the second main swing arm 32. In this embodiment, the first sub-housing 12A and the lower housing 11 are fixedly connected by bolts. In other embodiments, the first sub-housing 12A and the lower housing 11 can also be fixedly connected by glue or welding.

[0098] The structure of the second sub-housing 12B is identical to that of the first sub-housing 12A. The second sub-housing 12B is located at one end of the lower housing 11 in the positive direction of the Y-axis, opposite the third rotation slot 118 and the fourth rotation slot 119. The third sub-housing 12C is located between the first sub-housing 12A and the second sub-housing 12B and is fixedly connected to the lower housing 11. The third sub-housing 12C is rotatably connected to the synchronizer assembly 60.

[0099] The fixed base 10 also has a mounting groove 13. Mounting groove 13 is located on the bottom plate 111 of the lower housing 11, between the first sub-housing 12A and the third sub-housing 12C. Mounting groove 13 is used to mount the synchronization assembly 60. The fixed base 10 also includes a first side 14 and a second side 15. The first side 14 and the second side 15 are arranged opposite each other and are located on opposite sides of the fixed base 10 in the X direction.

[0100] Please refer to FIG. 9 , which is an enlarged structural diagram of the fixing frame 20 in the rotating mechanism 100 shown in FIG. 6 .

[0101] The fixing frame 20 includes a first fixing frame 21 and a second fixing frame 22. The first fixing frame 21 is a long, wedge-shaped block having a thickness. The first fixing frame 21 includes a first upper surface 2111, a first lower surface 2112, a first side surface 2113, a second side surface 2114, a first end surface 2115, and a second end surface 2116. The first upper surface 2111 and the first lower surface 2112 are disposed opposite each other, the first side surface 2113 and the second side surface 2114 are disposed opposite each other, and the first end surface 2115 and the second end surface 2116 are disposed opposite each other. The first side surface 2113 and the second side surface 2114 are connected between the first upper surface 2111 and the first lower surface 2112, and the first end surface 2115 and the second end surface 2116 are connected between the first side surface 2113 and the second side surface 2114.

[0102] The first fixing frame 21 is provided with a first notch 211, a second notch 212, a first slide groove 213, and a first guide groove 214. Both the first notch 211 and the second notch 212 are located on the second side surface 2114 and extend through the first upper surface 2111 and the first lower surface 2112. A first sleeve 215 is fixed to the inner wall of the first notch 211. The first sleeve 215 is provided with a first rotation hole 216. The axis of the first rotation hole 216 extends parallel to the Y-axis. The first rotation hole 216 is used to mount a rotating shaft to achieve a rotational connection with the first intermediate swing arm 41 in the first swing arm assembly 101. The second notch 212 is symmetrically arranged with the first notch 211 and is located at the negative end of the first fixing frame 21 in the Y-axis direction. A second sleeve 217 is fixed to the inner wall of the second notch 212. The second sleeve 217 is provided with a second rotation hole 218. The second rotation hole 218 is used to install a rotating shaft to achieve a rotational connection with the first intermediate swing arm 41A in the second swing arm assembly 102.

[0103] In this embodiment, there are two first guide grooves 214. Both first guide grooves 214 are arc-shaped, recessed in the first upper surface 2111, and extend through the first side surface 2113. Both first guide grooves 214 are located between the first notch 211 and the second notch 212, and are spaced apart along the Y direction. Both first guide grooves 214 are configured to be slidably connected to the first pressure plate 51. In other embodiments, there may be one or more first guide grooves 214. The number of first guide grooves 214 is not limited herein; as long as there are multiple first guide grooves 214, they can be spaced apart along the Y direction.

[0104] In this embodiment, there are two first chutes 213. Both first chutes 213 are located between the two first guide grooves 214 and are spaced apart along the Y direction. Both first chutes 213 extend through the first side surface 2113 and the second side surface 2114. Both first chutes 213 are configured to slidably connect with the first synchronization swing arm 63 in the synchronization assembly 60. In other embodiments, there may be one or more first chutes 213. The number of first chutes 213 is not limited herein; as long as there are multiple first chutes 213, they can be spaced apart along the Y direction.

[0105] In this embodiment, the second fixing frame 22 and the first fixing frame 21 are mirror-symmetrical structures, and are axially symmetrical about the axis of symmetry O. The second fixing frame 22 includes a second upper surface 2211, a second lower surface 2212, a third side surface 2213, a fourth side surface 2214, a third end surface 2215, and a fourth end surface 2216, which together form the outer surface of the second fixing frame 22. The second fixing frame 22 is provided with a third notch 221, a fourth notch 222, two second guide slots 223, and two second guide slots 224. The structure of the third notch 221 is identical to that of the first notch 211. A third sleeve 225 is provided on the inner wall of the third notch 221. The third sleeve 225 has a third rotation hole 226. The third rotation hole 226 is used to mount a rotating shaft to achieve a rotational connection with the second intermediate swing arm 42 in the first swing arm assembly 101. A fourth sleeve 227 is provided on the inner wall of the fourth notch 222. The fourth sleeve 227 has a fourth rotation hole 228. The fourth rotation hole 228 is used to mount a rotating shaft to achieve a rotational connection with the second intermediate swing arm 42A in the second swing arm assembly 102. The second guide groove 224 has the same structure as the first guide groove 214 and is used for sliding connection with the second pressure plate 52. The second slide groove 223 has the same structure as the first slide groove 213 and is used for sliding connection with the second synchronization swing arm 64 in the synchronization assembly 60. In other embodiments, the structure of the second fixing frame 22 may differ from that of the first fixing frame 21, as long as the structure of the second fixing frame 22 is compatible with the swing arm assembly 1, synchronization assembly 60, and pressure plate 50.

[0106] Please refer to FIG. 10 , which is an enlarged structural diagram of the first swing arm assembly 101 in the rotating mechanism 100 shown in FIG. 6 .

[0107] The first swing arm assembly 101 includes a main swing arm 30 and an intermediate swing arm 40. The main swing arm 30 includes a first main swing arm 31 and a second main swing arm 32. The first main swing arm 31 includes a first rotating body 311, a first swinging body 312, a first shaft 313, and a first stop block 314. The first rotating body 311 is an arc-shaped plate-like structure. The structure of the first rotating body 311 matches the structure of the first rotation groove 116, and the first rotating body 311 can slide and rotate within the first rotation groove 116. One end of the first swinging body 312 is provided with a first clearance notch 315 and a first shaft hole 316. The first shaft hole 316 passes through the first swinging body 312 in the Y direction and communicates with the first clearance notch 315. The end of the first swinging body 312 facing away from the first clearance notch 315 is fixedly connected to the first rotating body 311. The first shaft 313 is fixedly connected to the side of the first swinging body 312 and is spaced apart from the first shaft hole 316. The first shaft 313 extends parallel to the Y direction. The first shaft 313 is used to be rotatably connected to the first pressure plate 51. The first stop block 314 is fixed to the end of the first rotating body 311 facing away from the first swinging body 312, and extends along the Y direction toward the side away from the first rotating body 311. In this embodiment, the first stop block 314 acts as a stop. When the rotating mechanism 100 is in the folded state, the first stop block 314 abuts against the inner wall of the fixed base 10, thereby preventing the first main swing arm 31 from sliding out of the fixed base 10 when sliding in the first rotating groove 116, thereby improving the sliding stability of the first main swing arm 31. The first main swing arm 31 is installed in the first rotating groove 116, and is used to be rotatably and slidably connected to the fixed base 10.

[0108] The second main swing arm 32 has the same structure as the first main swing arm 31. The second main swing arm 32 includes a second rotating body 321, a second swinging body 322, a third shaft 323, and a second stop block 324. The structure of the second rotating body 321 is the same as that of the first rotating body 311. The structure of the second swinging body 322 is the same as that of the first swinging body 312. One end of the second swinging body 322 is provided with a second avoidance gap 325 and a second shaft hole 326. The second shaft hole 326 passes through the second swinging body 322 in the Y direction and is connected to the second avoidance gap 325. The end of the second swinging body 322 facing away from the second avoidance gap 325 is fixedly connected to the second rotating body 321. The structure of the third shaft 323 is the same as that of the first shaft 313, and the third shaft 323 is used to be rotatably connected to the second pressure plate 52. The structure of the second stop block 324 is the same as that of the first stop block 314. In this embodiment, the second stop block 324 is provided to prevent the second main swing arm 32 from sliding out of the fixed base 10 when sliding in the second rotation groove 117. The second main swing arm 32 is installed in the second rotation groove 117 of the fixed base 10 for rotationally and slidingly connecting with the fixed base 10.

[0109] The intermediate swing arm 40 includes a first intermediate swing arm 41 and a second intermediate swing arm 42. The first intermediate swing arm 41 includes a first body 411 and a second shaft 412. The first body 411 is provided with a third shaft hole 413 and a fourth shaft hole 414. The third shaft hole 413 and the fourth shaft hole 414 are spaced apart side by side along the X-direction. The third shaft hole 413 and the fourth shaft hole 414 extend parallel to the Y-direction and penetrate the first body 411 in the Y-direction. The second shaft 412 is fixed to the side of the first body 411 and is located between the third shaft hole 413 and the fourth shaft hole 414, spaced apart from the third shaft hole 413 and the fourth shaft hole 414. The second shaft 412 extends parallel to the Y-direction. The third shaft hole 413 is rotatably connected to the first main swing arm 31, the fourth shaft hole 414 is rotatably connected to the first fixing bracket 21, and the second shaft 412 is rotatably connected to the first pressure plate 51.

[0110] The structure of the second intermediate swing arm 42 is identical to that of the first intermediate swing arm 41. The second intermediate swing arm 42 includes a second body 421 and a fourth shaft 422. The structure of the second body 421 is identical to that of the first body 411. The second body 421 is provided with a fifth shaft hole 423 and a sixth shaft hole 424. The fifth shaft hole 423 is configured for rotational connection with the second main swing arm 32, while the sixth shaft hole 424 is configured for rotational connection with the second fixing bracket 22. The fourth shaft 422 has the same structure as that of the second shaft 412 and is configured for rotational connection with the second pressure plate 52.

[0111] The structure of the main swing arm 30A in the second swing arm assembly 102 is the same as or similar to the structure of the main swing arm 30 in the first swing arm assembly 101, and the structure of the intermediate swing arm 40A in the second swing arm assembly 102 is the same as or similar to the structure of the intermediate swing arm 40 in the first swing arm assembly 101, which will not be repeated here.

[0112] Please also refer to FIG. 11 , which is a partial structural diagram of the rotating mechanism 100 in FIG. 5 in a flattened state.

[0113] The rotating mechanism 100 further includes a first rotating shaft 1A, a second rotating shaft 1B, a third rotating shaft 1C, and a fourth rotating shaft 1D. The first rotating shaft 1A is used to rotationally connect the first main swing arm 31 and the first intermediate swing arm 41. The second rotating shaft 1B is used to rotationally connect the first intermediate swing arm 41 and the first fixed frame 21. The third rotating shaft 1C is used to rotationally connect the second main swing arm 32 and the second intermediate swing arm 42. The fourth rotating shaft 1D is used to rotationally connect the second intermediate swing arm 42 and the second fixed frame 22.

[0114] The first fixed frame 21, the first main swing arm 31, and the first intermediate swing arm 41 are located on one side of the fixed base 10, that is, in the positive direction of the X-axis. The second fixed frame 22, the second main swing arm 32, and the second intermediate swing arm 42 are located on the other side of the fixed base 10, that is, in the negative direction of the X-axis. The first rotating body 311 of the first main swing arm 31 is mounted in the first rotation groove 116, and the first rotating body 311 can slide and rotate within the first rotation groove 116. A portion of the first body 411 of the first intermediate swing arm 41 is located in the first avoidance notch 315. The third shaft hole 413 is aligned with the first shaft hole 316, and the axes of the third shaft hole 413 and the first shaft hole 316 are collinear. The first rotating shaft 1A passes through the first shaft hole 316 and the third shaft hole 413. In this embodiment, the first rotating shaft 1A is fixedly connected to the inner wall of the first shaft hole 316 and can rotate within the third shaft hole 413. In other embodiments, the first rotating shaft 1A may be fixedly connected to the inner wall of the third shaft hole 413 and rotatable within the first shaft hole 316. The end of the first intermediate swing arm 41 facing away from the first main swing arm 31 is located within the first notch 211 of the first fixed frame 21. The fourth shaft hole 414 is aligned with the first rotating hole 216, and the axes of the fourth shaft hole 414 and the first rotating hole 216 are colinear. The second rotating shaft 1B passes through the first rotating hole 216 and the fourth shaft hole 414. In this embodiment, the second rotating shaft 1B is fixedly connected to the inner wall of the first rotating hole 216 and rotatable within the fourth shaft hole 414. In other embodiments, the second rotating shaft 1B may also be fixedly connected to the inner wall of the fourth shaft hole 414 and rotatable within the first rotating hole 216.

[0115] The second rotating body 321 of the second main swing arm 32 is installed in the second rotating groove 117, and the second rotating body 321 can slide and rotate in the second rotating groove 117. Part of the second body 421 of the second intermediate swing arm 42 is located in the second avoidance gap 325, the fifth shaft hole 423 and the second shaft hole 326 are aligned, and the axes of the fifth shaft hole 423 and the second shaft hole 326 are on the same straight line. The third rotating shaft 1C passes through the fifth shaft hole 423 and the second shaft hole 326. In this embodiment, the third rotating shaft 1C is fixedly connected to the inner wall of the second shaft hole 326 and can rotate in the fifth shaft hole 423. In other embodiments, the third rotating shaft 1C can also be fixedly connected to the inner wall of the fifth shaft hole 423 and can rotate in the second shaft hole 326. The end of the second intermediate swing arm 42 facing away from the second main swing arm 32 is located within the third notch 221 of the second fixed frame 22. The sixth shaft hole 424 is aligned with the third rotation hole 226, and the axes of the sixth shaft hole 424 and the third rotation hole 226 are coaxial. The fourth rotation shaft 1D passes through the third rotation hole 226 and the sixth shaft hole 424. In this embodiment, the fourth rotation shaft 1D is fixedly connected to the inner wall of the third rotation hole 226 and is rotatable within the sixth shaft hole 424. In other embodiments, the fourth rotation shaft 1D may also be fixedly connected to the inner wall of the sixth shaft hole 424 and rotatable within the third rotation hole 226.

[0116] Please refer to FIG. 12 and FIG. 13 . FIG. 12 is a schematic cross-sectional structural diagram of the rotating mechanism 100 shown in FIG. 5 in a flattened state. FIG. 13 is a schematic cross-sectional structural diagram of the rotating mechanism 100 shown in FIG. 12 in a folded state.

[0117] When the rotating mechanism 100 is in the flattened state, the first fixing frame 21 and the second fixing frame 22 are unfolded relative to the fixed base 10, the first main swing arm 31 and the second main swing arm 32 are unfolded relative to the fixed base 10, and the first intermediate swing arm 41 and the second intermediate swing arm 42 are unfolded relative to the fixed base 10. The first main swing arm 31 and the first intermediate swing arm 41 are substantially parallel, and the second main swing arm 32 and the second intermediate swing arm 42 are substantially parallel.

[0118] When the first fixing frame 21 rotates counterclockwise relative to the fixed base 10, it drives the first intermediate swing arm 41 to rotate counterclockwise relative to the fixed base 10. The first intermediate swing arm 41 drives the first main swing arm 31 to rotate counterclockwise, causing the first rotating element 311 to slide within the first rotation slot 116 away from the fixed base 10. Simultaneously, the first intermediate swing arm 41 rotates counterclockwise about the second rotation axis 1B and the first rotation axis 1A. In other words, the first intermediate swing arm 41 rotates counterclockwise relative to the first fixing frame 21 and the first main swing arm 31. When the second fixing frame 22 rotates clockwise relative to the fixed base 10, it drives the second intermediate swing arm 42 to rotate clockwise relative to the fixed base 10. The second intermediate swing arm 42 drives the second main swing arm 32 to rotate clockwise, causing the second rotating element 321 to slide within the second rotation slot 117 away from the fixed base 10. Simultaneously, the second intermediate swing arm 42 rotates counterclockwise about the fourth rotation axis 1D and the third rotation axis 1C. That is, the second intermediate swing arm 42 rotates clockwise relative to the second fixing frame 22 and rotates clockwise relative to the second main swing arm 32, so that the rotating mechanism 100 rotates to the folded state (as shown in FIG. 13 ).

[0119] When the rotating mechanism 100 is in the folded state, the first fixed frame 21 and the second fixed frame 22 are folded relative to each other, the first main swing arm 31 and the second main swing arm 32 are folded relative to each other, and the first intermediate swing arm 41 and the second intermediate swing arm 42 are folded relative to each other. The first main swing arm 31 is located between the first side 14 and the second side 15, and the first rotating body 311 is located on the inner side of the fixed base 10, that is, on the negative X-axis direction of the first side 14. The first intermediate swing arm 41 is tilted relative to the first main swing arm 31 toward the fixed base 10, and the angle between the first intermediate swing arm 41 and the first main swing arm 31 is obtuse. The second main swing arm 32 is located between the first side 14 and the second side 15, and the second rotating body 321 is located on the inner side of the fixed base 10, that is, on the positive X-axis direction of the second side 15. The second intermediate swing arm 42 is tilted relative to the second main swing arm 32 toward the fixed base 10, and the angle between the second intermediate swing arm 42 and the second main swing arm 32 is obtuse.

[0120] When the rotating mechanism 100 rotates from the folded state to the flattened state, the first fixed frame 21, the first main swing arm 31 and the first intermediate swing arm 41 rotate clockwise relative to the fixed base 10, and the second fixed frame 22, the second main swing arm 32 and the second intermediate swing arm 42 rotate counterclockwise relative to the fixed base 10.

[0121] In this embodiment, by providing a first intermediate swing arm 41 between the first main swing arm 31 and the first fixed frame 21, when the rotating mechanism 100 rotates from the flattened state to the folded state, the first intermediate swing arm 41 can rotate relative to the first main swing arm 31 and the first fixed frame 21 to compensate for the rotation angle of the first main swing arm 31 relative to the fixed base 10 and optimize the position of the axis of rotation of the first main swing arm 31 relative to the fixed base 10, thereby reducing the rotation angle of the first main swing arm 31 relative to the fixed base 10. Furthermore, when the rotating mechanism 100 is in the folded state, the first main swing arm 31 is located between the first side 14 and the second side 15, thereby reducing the distance that the first main swing arm 31 protrudes from the side surface of the fixed base 10. This further reduces the space occupied by the first main swing arm 31 in the thickness direction of the rotating mechanism 100 when the rotating mechanism 100 is in the folded state, thereby reducing the thickness of the rotating mechanism 100 when in the folded state and achieving a lightweight and thin foldable electronic device 500. Furthermore, by providing a second intermediate swing arm 42 between the second main swing arm 32 and the second fixing frame 22, when the rotating mechanism 100 rotates from the flattened state to the folded state, the second intermediate swing arm 42 can rotate relative to the second main swing arm 32 and the second fixing frame 22 to compensate for the rotation angle of the second main swing arm 32 relative to the fixed base 10 and optimize the position of the axis of rotation of the second main swing arm 32 relative to the fixed base 10, thereby reducing the rotation angle of the second main swing arm 32 relative to the fixed base 10. Furthermore, when the rotating mechanism 100 is in the folded state, the second main swing arm 32 is located between the first side 14 and the second side 15, thereby reducing the distance that the second main swing arm 32 protrudes from the side of the fixed base 10. This further reduces the space occupied by the second main swing arm 32 in the thickness direction of the rotating mechanism 100 when the rotating mechanism 100 is in the folded state, further reducing the thickness of the rotating mechanism 100 when in the folded state, thereby achieving a lightweight and thin foldable electronic device 500.

[0122] Please refer to FIG. 14 , which is an enlarged structural diagram of the pressing plate 50 in the rotating mechanism 100 shown in FIG. 6 .

[0123] The pressure plate 50 includes a first pressure plate 51 and a second pressure plate 52. The first pressure plate 51 is rotatably and slidably connected to the first fixing frame 21 and is also rotatably connected to the first main swing arm 31 and the first intermediate swing arm 41. The second pressure plate 52 is rotatably and slidably connected to the second fixing frame 22 and is also rotatably connected to the second main swing arm 32 and the second intermediate swing arm 42.

[0124] The first pressure plate 51 includes a first pressure plate body 511 and a first slider 512. The first pressure plate body 511 is elongated. The first pressure plate body 511 is provided with a first sliding hole 513 and a second sliding hole 514. The first and second sliding holes 513, 514 are located on the end surface of the first pressure plate body 511 in the Y direction and are spaced apart along the X direction. The first and second sliding holes 513, 514 extend in directions that intersect the X direction and are parallel to each other. The first sliding hole 513 is configured for rotational and sliding connection with the first main swing arm 31 of the first swing arm assembly 101, while the second sliding hole 514 is configured for rotational and sliding connection with the first intermediate swing arm 41 of the first swing arm assembly 101. The first pressure plate body 511 is also provided with a first and second auxiliary sliding holes (not shown). The first and second auxiliary sliding holes are located on the other end surface of the first pressure plate body 511 in the Y direction. The first auxiliary sliding hole is used to rotate and slide with the first main swing arm 31A in the second swing arm assembly 102, and the second auxiliary sliding hole is used to rotate and slide with the first intermediate swing arm 41A in the second swing arm assembly 102. The first slider 512 is fixedly connected to the first pressure plate body 511. In this embodiment, there are two first sliders 512. The two first sliders 512 are arranged at intervals along the Y direction. Each first slider 512 is arc-shaped. The structure of the first slider 512 is compatible with the structure of the first guide groove 214, and the first slider 512 can slide and rotate along the first guide groove 214. In other embodiments, the first slider 512 can also be one or more than three. The number of the first sliders 512 is not limited here, as long as the number of the first sliders 512 is consistent with the number of the first guide grooves 214.

[0125] The structure of the second pressure plate 52 is substantially the same as that of the first pressure plate 51. The second pressure plate 52 comprises a second pressure plate body 521 and a second slider 522. A third sliding hole 523 and a fourth sliding hole 524 are provided on one end surface of the second pressure plate body 521 in the Y direction, and a third auxiliary sliding hole and a fourth auxiliary sliding hole (not shown) are provided on the other end surface in the Y direction. The third sliding hole 523 is configured for rotational and sliding connection with the second main swing arm 32 of the first swing arm assembly 101, while the fourth sliding hole 524 is configured for rotational and sliding connection with the second intermediate swing arm 42 of the first swing arm assembly 101. The third auxiliary sliding hole is configured for rotational and sliding connection with the second main swing arm 32A of the second swing arm assembly 102, while the fourth auxiliary sliding hole is configured for rotational and sliding connection with the second intermediate swing arm 42A of the second swing arm assembly 102. In this embodiment, two second sliders 522 are provided. The structure of the second sliders 522 matches that of the second guide slot 224, allowing the second sliders 522 to slide and rotate along the second guide slot 224. In other embodiments, there may be one or more than three second sliders 522 . The number of the second sliders 522 is not limited herein, as long as the number of the second sliders 522 is consistent with the number of the first guide slots 214 .

[0126] To better understand the assembly relationship between the pressure plate 50 and other components, refer to Figures 5 and 6. The first pressure plate 51 is located in the positive X-axis direction of the fixed base 10 and is stacked with the first fixed frame 21. The first sliders 512 are mounted in the first guide slots 214, and each first slider 512 can slide and rotate within its corresponding first guide slot 214. The first shaft 313 of the first main swing arm 31 is mounted in the first sliding hole 513, and the second shaft 412 of the first intermediate swing arm 41 is mounted in the second sliding hole 514. The second pressure plate 52 is located in the negative X-axis direction of the fixed base 10 and is stacked with the second fixed frame 22. The second sliders 522 are mounted in the second guide slots 224, and each second slider 522 can slide and rotate within its corresponding second guide slot 224. The third shaft 323 of the second main swing arm 32 is mounted in the third sliding hole 523, and the fourth shaft 422 of the second intermediate swing arm 42 is mounted in the fourth sliding hole 524.

[0127] The first pressing plate 51 and the second pressing plate 52 are both arranged opposite to the display screen 300. The first pressing plate 51 and the second pressing plate 52 jointly support the display screen 300, thereby increasing the stability of the connection of the display screen 300 and ensuring good display of the display screen 300.

[0128] Please refer to FIG. 15 and FIG. 16 . FIG. 15 is a schematic cross-sectional view of the rotating mechanism 100 shown in FIG. 5 , and FIG. 16 is a schematic cross-sectional view of the rotating mechanism 100 shown in FIG. 15 in a folded state.

[0129] When the first housing 210 rotates, it drives the first fixing frame 21 to rotate relative to the fixed base 10, thereby driving the first pressure plate 51 to rotate relative to the fixed base 10 and causing the first slider 512 to slide in an arc shape within the corresponding first guide slot 214, thereby driving the first pressure plate 51 to slide in an arc shape relative to the first fixing frame 21. Simultaneously, the rotation of the first fixing frame 21 relative to the fixed base 10 also drives the first intermediate swing arm 41 to rotate relative to the fixed base 10, causing the second shaft 412 to rotate and slide within the second sliding hole 514. When the first intermediate swing arm 41 rotates relative to the fixed base 10, it drives the first main swing arm 31 to rotate relative to the fixed base 10 and causes the first shaft 313 to rotate and slide within the first sliding hole 513, thereby achieving rotation of the first pressure plate 51 relative to the fixed base 10.

[0130] When the second housing 220 rotates, it drives the second fixing frame 22 to rotate relative to the fixed base 10, thereby driving the second pressure plate 52 to rotate relative to the fixed base 10 and causing the second slider 522 to slide in an arc shape within the corresponding second guide slot 224, thereby driving the second pressure plate 52 to slide in an arc shape relative to the second fixing frame 22. Simultaneously, the rotation of the second fixing frame 22 relative to the fixed base 10 also drives the second intermediate swing arm 42 to rotate relative to the fixed base 10, causing the fourth shaft 422 to rotate and slide within the fourth sliding hole 524. When the second intermediate swing arm 42 rotates relative to the fixed base 10, it drives the second main swing arm 32 to rotate relative to the fixed base 10 and causes the third shaft 323 to rotate and slide within the third sliding hole 523, thereby achieving rotation of the second pressure plate 52 relative to the fixed base 10.

[0131] In this embodiment, the first housing 210 drives the first fixing frame 21 to rotate, thereby driving the first pressure plate 51 to rotate, and the second housing 220 drives the second fixing frame 22 to rotate, thereby driving the second pressure plate 52 to rotate, thereby switching the foldable electronic device 500 between a folded state and an unfolded state, thereby achieving folding and unfolding of the display screen 300. Furthermore, in this embodiment, the first pressure plate 51 can slide in an arc relative to the first fixing frame 21, and the second pressure plate 52 can slide in an arc relative to the second fixing frame 22, thereby making the angle between the first pressure plate 51 and the second pressure plate 52 adjustable, thereby adapting to the folding angle of the foldable portion 330 of the display screen 300, and preventing the first and second pressure plates 51, 52 from squeezing the display screen 300 when the rotating mechanism 100 is in the folded state. That is to say, when the rotating mechanism 100 is in the folded state, the angle between the first fixing frame 21 and the second fixing frame 22 is different from the angle between the first pressing plate 51 and the second pressing plate 52, and the angle between the first pressing plate 51 and the second pressing plate 52 can be adjusted according to the bending angle of the display screen 300 to adapt to the bending of the display screen 300.

[0132] In this embodiment, by slidably and rotationally connecting the first pressure plate 51 to the first main swing arm 31 and the first intermediate swing arm 41, the first pressure plate 51 can simultaneously rotate relative to the fixed base 10 along with the first main swing arm 31 and the first intermediate swing arm 41, thereby achieving rotation of the first pressure plate 51 relative to the fixed base 10. This improves the stability of the rotation of the first pressure plate 51. Furthermore, the pressure plate swing arm can be eliminated. That is, in this embodiment, stable rotation of the first pressure plate 51 is achieved without the need for a pressure plate swing arm, thereby simplifying the structure of the rotation mechanism 100 and facilitating a thinner and lighter foldable electronic device 500. At the same time, in this embodiment, the second pressure plate 52 is connected to the second main swing arm 32 and the second intermediate swing arm 42 by sliding and rotating, so that the second pressure plate 52 can rotate relative to the fixed base 10 at the same time as the second main swing arm 32 and the second intermediate swing arm 42, so as to realize the rotation of the second pressure plate 52 relative to the fixed base 10, thereby improving the stability of the rotation of the second pressure plate 52, and saving the pressure plate swing arm, thereby further simplifying the structure of the rotating mechanism 100, which is conducive to realizing the lightweight and thinness of the foldable electronic device 500.

[0133] Please refer to FIG. 17 , which is a schematic diagram of the exploded structure of the synchronizing assembly 60 in the rotating mechanism 100 shown in FIG. 6 .

[0134] The synchronization assembly 60 includes a synchronization member 61, a damping member 62, a first synchronization swing arm 63, and a second synchronization swing arm 64. The first synchronization swing arm 63 and the second synchronization swing arm 64 are both hinged to the damping member 62, and the first synchronization swing arm 63 and the second synchronization swing arm 64 are respectively located on opposite sides of the damping member 62 in the X direction. The synchronization member 61 is fixedly connected to the first synchronization swing arm 63 and the second synchronization swing arm 64. When the first synchronization swing arm 63 rotates, it drives the synchronization member 61 to rotate, thereby driving the second synchronization swing arm 64 to rotate, thereby achieving synchronized movement of the first synchronization swing arm 63 and the second synchronization swing arm 64. In addition, when the first synchronization swing arm 63 and the second synchronization swing arm 64 rotate, they abut the damping member 62, causing the damping member 62 to generate a damping force, thereby providing a damping feel for the rotation of the rotating mechanism 100.

[0135] The synchronizer 61 includes a synchronizer gear 611 and a rotating rod 612. The rotating rod 612 includes a first rotating rod 6121, a second rotating rod 6122, a third rotating rod 6123, and a fourth rotating rod 6124. The first rotating rod 6121, the second rotating rod 6122, the third rotating rod 6123, and the fourth rotating rod 6124 all extend parallel to the Y direction, are arranged side by side along the X direction, and are rotatably connected to the fixed base 10. In this embodiment, the first rotating rod 6121 and the second rotating rod 6122 are each provided with a flat shaft portion. The flat shaft portion of the first rotating rod 6121 is fixedly connected to the first synchronized swing arm 63, while the flat shaft portion of the second rotating rod 6122 is fixedly connected to the second synchronized swing arm 64.

[0136] The synchronous gear 611 includes a first gear 613, a second gear 614, a third gear 615, and a fourth gear 616. The first gear 613, the second gear 614, the third gear 615, and the fourth gear 616 extend parallel to the Y direction and are arranged side by side along the X direction. The first gear 613 is mounted on the outer circumference of the first rotating rod 6121 and is fixedly connected to the first rotating rod 6121. The second gear 614 is mounted on the outer circumference of the second rotating rod 6122 and is fixedly connected to the second rotating rod 6122. The third gear 615 is mounted on the outer circumference of the third rotating rod 6123 and is fixedly connected to the third rotating rod 6123. The fourth gear 616 is mounted on the outer circumference of the fourth rotating rod 6124 and is fixedly connected to the fourth rotating rod 6124. Furthermore, the third gear 615 and the fourth gear 616 are located between the first gear 613 and the second gear 614. The first gear 613 meshes with the third gear 615, the third gear 615 meshes with the fourth gear 616, and the fourth gear 616 meshes with the second gear 614. When the first rotating rod 6121 rotates, it drives the first gear 613 to rotate, the first gear 613 drives the third gear 615 to rotate, the third gear 615 drives the fourth gear 616 to rotate, the fourth gear 616 drives the second gear 614 to rotate, and the second gear 614 drives the second rotating rod 6122 to rotate.

[0137] The first synchronous swing arm 63 includes a first synchronous swing member 631, a first synchronous shaft seat 632, a first hinge 633, and a third hinge 634. In this embodiment, the first synchronous swing member 631 includes two sub-swing members spaced apart from each other. The two sub-swing members are respectively mounted in the two first chute 213. In other embodiments, the first synchronous swing member 631 may also be a one-piece structure. The first synchronous shaft seat 632 is connected to one end of the first synchronous swing member 631 and is fixedly connected to the first synchronous swing member 631. A first hole 635 is defined in the first synchronous shaft seat 632, and the first hole 635 extends parallel to the Y direction. The first synchronous shaft seat 632 is defined by a first receiving notch 636. The first receiving notch 636 is located in the middle of the first synchronous shaft seat 632. The first hinge 633 and the third hinge 634 are both fixedly connected to the first synchronous shaft seat 632 and face into the first receiving notch 636. The first hinge 633 includes a protrusion and a plurality of recesses (not shown), which are alternately arranged along the circumference of the first hole 635. The structure of the third hinge 634 is the same as that of the first hinge 633.

[0138] The second synchronous swing arm 64 has the same structure as the first synchronous swing arm 63, and the second synchronous swing arm 64 and the first synchronous swing arm 63 are symmetrical structures. The second synchronous swing arm 64 includes a second synchronous swing body 641, a second synchronous shaft seat 642, a second hinge 643 and a fourth hinge 644. A second hole 645 is provided in the second synchronous shaft seat 642, and the extension direction of the second hole 645 is parallel to the Y direction. The second synchronous shaft seat 642 is provided with a second receiving notch 646. The second hinge 643 and the fourth hinge 644 are both fixedly connected to the second synchronous shaft seat 642 and face the second receiving notch 646. The structures of the second hinge 643 and the fourth hinge 644 are the same as those of the first hinge 633.

[0139] The damping member 62 includes a first baffle 621, a second baffle 625, and a damping spring 629. The first baffle 621 includes a first baffle body 622, a first hinge seat 623, and a second hinge seat 624. The first hinge seat 623 and the second hinge seat 624 are spaced apart on the surface of the first baffle body 622, and the structure of the first hinge seat 623 matches the structure of the first hinge body 633, and the structure of the second hinge seat 624 matches the structure of the second hinge body 643. The structure of the second baffle 625 is the same as that of the first baffle 621. The second baffle 625 includes a second baffle body 626, a third hinge seat 627, and a fourth hinge seat 628. The structure of the third hinge seat 627 matches the structure of the third hinge body 634, and the structure of the fourth hinge seat 628 matches the structure of the fourth hinge body 644. The first baffle 621 and the second baffle 625 are spaced apart and arranged parallel to each other along the Y direction. The surface of the first baffle 621 facing away from the first hinge seat 623 is opposite the surface of the second baffle 625 facing away from the third hinge seat 627. In this embodiment, there are two damping springs 629. In other embodiments, there may be one, three, or more than four damping springs 629. The damping spring 629 is mounted between the first baffle 621 and the second baffle 625 and is fixedly connected to the first baffle 621 and the second baffle 625.

[0140] Please refer to Figure 5 as well. The synchronization assembly 60 is installed on the fixed base 10. The first rotating rod 6121, the second rotating rod 6122, the third rotating rod 6123 and the fourth rotating rod 6124 of the synchronization member 61 are all rotatably connected to the fixed base 10. The first synchronization swing arm 63 and the second synchronization swing arm 64 are respectively located on opposite sides of the fixed base 10 in the X direction. In addition, the first rotation rod 6121 passes through the first rotation hole 216 and is fixedly connected to the first synchronization shaft seat 632, and the second rotation rod 6122 passes through the second rotation hole 218 and is fixedly connected to the second synchronization shaft seat 642. The first synchronization swing body 631 is installed in the first slide groove 213 of the first fixed frame 21 and can slide along the first slide groove 213. The second synchronization swing body 641 is installed in the fourth slide groove 24 in the second slide groove 223 of the second fixed frame 22 and can slide along the second slide groove 223.

[0141] The damping member 62 is mounted within the fixed base 10 and positioned between the first synchronous swing arm 63 and the second synchronous swing arm 64. The first baffle 621 and the second baffle 625 are each sleeved around the outer periphery of the first and second rotating rods 6121 and 6122 and are movable relative to the first and second rotating rods 6121 and 6122 in the Y direction. The first hinge 633 is hingedly connected to the first hinge seat 623, the third hinge 634 is hingedly connected to the third hinge seat 627, the second hinge 643 is hingedly connected to the second hinge seat 624, and the fourth hinge 644 is hingedly connected to the fourth hinge seat 628.

[0142] When the first fixed frame 21 rotates, it drives the first synchronous swing arm 63 to rotate, causing the first synchronous swing member 631 of the first synchronous swing arm 63 to slide within the first slide groove 213. Furthermore, when the first synchronous swing arm 63 rotates, it drives the first rotating rod 6121 to rotate synchronously, thereby driving the first gear 613 to rotate. When the first gear 613 rotates, it drives the third gear 615 and the fourth gear 616 to rotate, thereby driving the second gear 614 to rotate. When the second gear 614 rotates, it drives the second rotating rod 6122 to rotate, thereby driving the second synchronous swing arm 64 to rotate, and the second fixed frame 22 to rotate, while causing the second synchronous swing member 641 to slide within the second slide groove 223, thereby achieving synchronous rotation of the first synchronous swing arm 63 and the second synchronous swing arm 64, as well as synchronous rotation of the first fixed frame 21 and the second fixed frame 22.

[0143] Simultaneously, the rotation of the first synchronous swing arm 63 drives the synchronous rotation of the first hinge 633 and the third hinge 634. The rotation of the first hinge 633 repeatedly pushes the first hinge seat 623 to move in the Y direction, driving the movement of the first baffle 621. The rotation of the third hinge 634 repeatedly pushes the third hinge seat 627 to move in the Y direction, driving the movement of the second baffle 625. The first baffle 621 and the second baffle 625 move in opposite directions, compressing the damping spring 629 and generating an elastic force. The elastic restoring force of the damping spring 629 acts on the first hinge seat 623 and the third hinge seat 627, causing the first hinge seat 623 to compress the first hinge 633 and the third hinge seat 627 to compress the third hinge 634. This provides a damping force for the rotation of the first synchronous swing arm 63. The damping force of the first synchronous swing arm 63 is applied to the first housing 210 via the first fixing bracket 21, providing a damping feel for the user.

[0144] When the second synchronous swing arm 64 rotates, it drives the second hinge 643 and the fourth hinge 644 to rotate synchronously. The rotation of the second hinge 643 repeatedly pushes the second hinge seat 624 to move in the Y direction, driving the first baffle 621 to move. When the fourth hinge 644 rotates, it repeatedly pushes the fourth hinge seat 628 to move in the Y direction, driving the second baffle 625 to move. The first baffle 621 and the second baffle 625 move in opposite directions, compressing the damping spring 629 and generating an elastic force. The elastic restoring force of the damping spring 629 acts on the second hinge seat 624 and the fourth hinge seat 628, causing the second hinge seat 624 to compress the second hinge 643 and the fourth hinge seat 628 to compress the fourth hinge 644, thereby providing a damping force for the rotation of the second synchronous swing arm 64. This damping force of the second synchronous swing arm 64 is applied to the second housing 220 via the second fixing bracket 22, providing a damping feel for the user.

[0145] The first synchronous swing arm 63 and the second synchronous swing arm 64 rotate in opposite directions. For example, when the rotation mechanism 100 switches from the flattened state to the folded state, the first fixed frame 21, the first synchronous swing arm 63, and the first rotating rod 6121 rotate clockwise, while the second fixed frame 22, the second synchronous swing arm 64, and the second rotating rod 6122 rotate counterclockwise. When the rotation mechanism 100 switches from the folded state to the flattened state, the first fixed frame 21, the first synchronous swing arm 63, and the first rotating rod 6121 rotate counterclockwise, while the second fixed frame 22, the second synchronous swing arm 64, and the second rotating rod 6122 rotate clockwise.

[0146] In this embodiment, by providing a synchronizer 61, when the first synchronizer arm 63 rotates, the synchronizer 61 can drive the second synchronizer arm 64 to rotate, thereby achieving synchronized rotation of the first synchronizer arm 63 and the second synchronizer arm 64, thereby achieving synchronized rotation of the rotating mechanism 100 and the foldable electronic device 500. Furthermore, in this embodiment, by providing a damping member 62, when the first synchronizer arm 63 and the second synchronizer arm 64 rotate relative to the fixed base 10, the damping member 62 always abuts against the first synchronizer arm 63 and the second synchronizer arm 64, generating a damping force, thereby providing a damping feel to the user and enhancing the user experience.

[0147] Please refer to FIG. 18 , which is a schematic structural diagram of the rotating mechanism 100 shown in FIG. 5 in a folded state.

[0148] When the rotating mechanism 100 is in a flattened state, the first pressing plate 51, the second pressing plate 52 and the fixed base 10 jointly support the display screen 300 to ensure a good display of the display screen 300. When the rotating mechanism 100 is in a folded state, the foldable portion 330 of the display screen 300 is located on the inner side of the rotating mechanism 100. Specifically, the foldable portion 330 is located in the avoidance space. Exemplarily, the avoidance space is roughly in the shape of a "water drop". At this time, the rotating mechanism 100 can avoid the R angle formed when the foldable portion 330 is bent, so that the foldable portion 330 will not bend at a large angle, thereby avoiding undesirable scenes such as creases on the display screen 300, and helping to extend the service life of the display screen 300.

[0149] Please refer to Figures 19 and 20. Figure 19 is a schematic diagram of a partial structure of the rotating mechanism 100 provided in the second embodiment of the present application, and Figure 20 is a schematic diagram of a partial exploded structure of the rotating mechanism 100 shown in Figure 19.

[0150] The difference between the embodiment shown in Figure 19 and the embodiment shown in Figure 5 is that the first main swing arm 31 is rotatably and slidingly connected to the first fixed frame 21, the first pressure plate 51 is rotatably and slidingly connected to the first synchronous swing arm 63, the second main swing arm 32 is rotatably and slidingly connected to the second fixed frame 22, and the second pressure plate 52 is rotatably and slidingly connected to the second synchronous swing arm 64.

[0151] The first main swing arm 31 is also provided with a first auxiliary shaft 317, which is fixed to the side of the first main swing arm 31. The first fixing frame 21 is provided with a fifth sliding hole 23 adapted to accommodate the first auxiliary shaft 317. The first auxiliary shaft 317 is mounted within the fifth sliding hole 23 and can rotate and slide within the fifth sliding hole 23. The second main swing arm 32 is also provided with a second auxiliary shaft (not shown), which is fixed to the side of the second main swing arm 32. The second fixing frame 22 is provided with a sixth sliding hole (not shown) adapted to accommodate the second auxiliary shaft. The second auxiliary shaft is mounted within the sixth sliding hole and can rotate and slide within the sixth sliding hole.

[0152] The first synchronous swing arm 63 is provided with a fifth shaft 637. In this embodiment, there are two fifth shafts 637. The extension direction of the two fifth shafts 637 is parallel to the Y direction, and the two fifth shafts 637 are spaced apart. The first pressure plate 51 is provided with a seventh sliding hole 515 that cooperates with the fifth shaft 637, and the extension direction of the seventh sliding hole 515 is parallel to the X direction. One fifth shaft 637 is installed in one seventh sliding hole 515, and each fifth shaft 637 can slide and rotate in the corresponding seventh sliding hole 515. The second synchronous swing arm 64 is provided with a sixth shaft (not shown). The extension direction of the sixth shaft is parallel to the Y direction. The second pressure plate 52 is provided with an eighth sliding hole (not shown) that cooperates with the sixth shaft, and the extension direction of the eighth sliding hole is parallel to the X direction. The sixth shaft is installed in the eighth sliding hole, and the sixth shaft can slide and rotate in the corresponding eighth sliding hole.

[0153] When the first fixed frame 21 rotates relative to the fixed base 10, it drives the first intermediate swing arm 41 to rotate, which in turn drives the first main swing arm 31 to rotate. When the first fixed frame 21 rotates relative to the fixed base 10, it also drives the first main swing arm 31 to rotate relative to the fixed base 10, and to rotate and slide relative to the first fixed frame 21. Simultaneously, when the first fixed frame 21 rotates relative to the fixed base 10, it also drives the first pressure plate 51 and the first synchronous swing arm 63 to rotate relative to the fixed base 10, and the first pressure plate 51 to rotate and slide relative to the first synchronous swing arm 63. When the second fixed frame 22 rotates relative to the fixed base 10, it drives the second intermediate swing arm 42 to rotate, which in turn drives the second main swing arm 32 to rotate. When the second fixed frame 22 rotates relative to the fixed base 10, it also drives the second main swing arm 32 to rotate relative to the fixed base 10, and to rotate and slide relative to the second fixed frame 22. At the same time, when the second fixing frame 22 rotates relative to the fixed base 10 , it also drives the second pressing plate 52 and the second synchronous swing arm 64 to rotate relative to the fixed base 10 , and the second pressing plate 52 rotates and slides relative to the second synchronous swing arm 64 .

[0154] In this embodiment, by rotatably connecting the first main swing arm 31 to the first intermediate swing arm 41 while also being rotatably and slidably connected to the first fixed frame 21, the rotational stability of the first main swing arm 31 and the first fixed frame 21 can be increased. By rotatably connecting the second main swing arm 32 to the second intermediate swing arm 42 while also being rotatably and slidably connected to the second fixed frame 22, the rotational stability of the second main swing arm 32 and the second fixed frame 22 can be increased. Furthermore, by rotatably connecting the first synchronous swing arm 63 to the first fixed frame 21 while also being rotatably connected to the first pressure plate 51, the rotational stability of the first pressure plate 51 can be improved. By rotatably connecting the second synchronous swing arm 64 to the second fixed frame 22 while also being rotatably connected to the second pressure plate 52, the rotational stability of the second pressure plate 52 can be improved. Furthermore, the pressure plate swing arm can be reduced, simplifying the structure of the rotation mechanism 100.

[0155] Please refer to Figures 21 and 22. Figure 21 is a partial structural schematic diagram of the rotating mechanism 100 provided in the third embodiment of the present application, and Figure 22 is a partial exploded structural schematic diagram of the rotating mechanism 100 shown in Figure 21.

[0156] The difference between the embodiment shown in Figure 21 and the embodiment shown in Figure 5 is that the first shaft 313 of the first main swing arm 31 is rotatably and slidingly connected to the first pressure plate 51, the first synchronous swing arm 63 is rotatably and slidingly connected to the first pressure plate 51, the third shaft 323 of the second main swing arm 32 is rotatably and slidingly connected to the second pressure plate 52, and the second synchronous swing arm 64 is rotatably and slidingly connected to the second pressure plate 52.

[0157] The first shaft 313 is mounted in the first sliding hole 513 and can rotate and slide within the first sliding hole 513. The third shaft 323 is mounted in the third sliding hole 523 and can rotate and slide within the third sliding hole 523. The first synchronous swing arm 63 is provided with a fifth shaft 637. In this embodiment, there are two fifth shafts 637. Both fifth shafts 637 extend parallel to the Y direction and are spaced apart. The first pressure plate 51 is provided with a seventh sliding hole 515 that mates with the fifth shaft 637. The seventh sliding hole 515 extends parallel to the X direction. One fifth shaft 637 is mounted in one seventh sliding hole 515, and each fifth shaft 637 can slide and rotate within its corresponding seventh sliding hole 515. The second synchronous swing arm 64 is provided with a sixth shaft (not shown). The sixth shaft extends parallel to the Y direction. The second pressure plate 52 is provided with an eighth sliding hole (not shown) that mates with the sixth shaft. The eighth sliding hole extends parallel to the X direction. The sixth shaft is installed in the eighth sliding hole, and the sixth shaft can slide and rotate in the corresponding eighth sliding hole.

[0158] When the first fixed frame 21 rotates relative to the fixed base 10, it drives the first intermediate swing arm 41 to rotate. The first intermediate swing arm 41 drives the first main swing arm 31 to rotate relative to the fixed base 10. As the first main swing arm 31 rotates relative to the fixed base 10, it also rotates and slides relative to the first pressure plate 51. Simultaneously, when the first fixed frame 21 rotates relative to the fixed base 10, it also drives the first pressure plate 51 and the first synchronous swing arm 63 to rotate relative to the fixed base 10. Furthermore, the first pressure plate 51 rotates and slides relative to the first synchronous swing arm 63. When the second fixed frame 22 rotates relative to the fixed base 10, it drives the second intermediate swing arm 42 to rotate. The second intermediate swing arm 42 drives the second main swing arm 32 to rotate. As the second main swing arm 32 rotates relative to the fixed base 10, it also rotates and slides relative to the second pressure plate 52. Simultaneously, when the second fixed frame 22 rotates relative to the fixed base 10, it also drives the second pressure plate 52 and the second synchronous swing arm 64 to rotate relative to the fixed base 10. Furthermore, the second pressure plate 52 rotates and slides relative to the second synchronous swing arm 64.

[0159] In this embodiment, by rotatably connecting the first main swing arm 31 to the first intermediate swing arm 41 while also being rotatably and slidably connected to the first pressure plate 51, the rotational stability of the first main swing arm 31 and the first pressure plate 51 can be increased. Simultaneously, by rotatably connecting the first synchronous swing arm 63 to the first fixed frame 21 while also being rotatably connected to the first pressure plate 51, the rotational stability of the first pressure plate 51 can be further improved. Furthermore, by rotatably connecting the second main swing arm 32 to the second intermediate swing arm 42 while also being rotatably and slidably connected to the second pressure plate 52, the rotational stability of the second main swing arm 32 and the second pressure plate 52 can be increased. Simultaneously, by rotatably connecting the second synchronous swing arm 64 to the second fixed frame 22 while also being rotatably connected to the second pressure plate 52, the rotational stability of the second pressure plate 52 can be further improved. Furthermore, the pressure plate swing arm can be reduced, simplifying the structure of the rotation mechanism 100.

[0160] Please refer to Figures 23 and 24. Figure 23 is a partial structural diagram of the rotating mechanism 100 provided in the fourth embodiment of the present application, and Figure 24 is a partial exploded structural diagram of the rotating mechanism 100 shown in Figure 23.

[0161] The difference between the embodiment shown in Figure 23 and the embodiment shown in Figure 5 is that the first main swing arm 31 is rotatably and slidingly connected to the first fixed frame 21, the first intermediate swing arm 41 is rotatably and slidingly connected to the first pressure plate 51, the second main swing arm 32 is rotatably and slidingly connected to the second fixed frame 22, and the second intermediate swing arm 42 is rotatably and slidingly connected to the second pressure plate 52.

[0162] The first main swing arm 31 also has a first auxiliary shaft 317 fixed to the side of the first main swing arm 31. The first fixing frame 21 has a fifth sliding hole 23 adapted to accommodate the first auxiliary shaft 317. The first auxiliary shaft 317 is mounted within the fifth sliding hole 23 and can rotate and slide within the fifth sliding hole 23. The second main swing arm 32 also has a second auxiliary shaft (not shown) fixed to the side of the second main swing arm 32. The second fixing frame 22 has a sixth sliding hole (not shown) adapted to accommodate the second auxiliary shaft. The second auxiliary shaft is mounted within the sixth sliding hole and can rotate and slide within the sixth sliding hole. The second shaft 412 of the first intermediate swing arm 41 is mounted within the second sliding hole 514 and can rotate and slide within the second sliding hole 514. The fourth shaft 422 of the second intermediate swing arm 42 is mounted within the fourth sliding hole 524 and can rotate and slide within the fourth sliding hole 524.

[0163] When the first fixed frame 21 rotates relative to the fixed base 10, it drives the first intermediate swing arm 41 to rotate. The first intermediate swing arm 41 drives the first main swing arm 31 to rotate, causing the first intermediate swing arm 41 to rotate and slide relative to the first pressure plate 51. When the first fixed frame 21 rotates relative to the fixed base 10, it also drives the first main swing arm 31 to rotate relative to the fixed base 10, and also drives the first fixed frame 21 to rotate and slide. Simultaneously, when the first fixed frame 21 rotates relative to the fixed base 10, it also drives the first pressure plate 51 and the first synchronous swing arm 63 to rotate relative to the fixed base 10, and the first pressure plate 51 to rotate and slide relative to the first synchronous swing arm 63. When the second fixed frame 22 rotates relative to the fixed base 10, it drives the second intermediate swing arm 42 to rotate. The second intermediate swing arm 42 drives the second main swing arm 32 to rotate, causing the second intermediate swing arm 42 to rotate and slide relative to the second pressure plate 52. When the second fixing frame 22 rotates relative to the fixed base 10, it also drives the second main swing arm 32 to rotate relative to the fixed base 10, and to rotate and slide relative to the second fixing frame 22. Simultaneously, when the second fixing frame 22 rotates relative to the fixed base 10, it also drives the second pressure plate 52 and the second synchronous swing arm 64 to rotate relative to the fixed base 10, and the second pressure plate 52 to rotate and slide relative to the second synchronous swing arm 64.

[0164] In this embodiment, by rotatably connecting the first main swing arm 31 to the first intermediate swing arm 41 while also being rotatably and slidably connected to the first fixed frame 21, the rotational stability of the first main swing arm 31 and the first fixed frame 21 can be increased. By rotatably connecting the second main swing arm 32 to the second intermediate swing arm 42 while also being rotatably and slidably connected to the second fixed frame 22, the rotational stability of the second main swing arm 32 and the second fixed frame 22 can be increased. Furthermore, by rotatably connecting the first synchronous swing arm 63 to the first fixed frame 21 while also being rotatably connected to the first pressure plate 51, the rotational stability of the first pressure plate 51 can be improved. By rotatably connecting the second synchronous swing arm 64 to the second fixed frame 22 while also being rotatably connected to the second pressure plate 52, the rotational stability of the second pressure plate 52 can be improved. Furthermore, the pressure plate swing arm can be reduced, simplifying the structure of the rotation mechanism 100.

[0165] Please refer to Figures 25 and 26. Figure 25 is a partial structural diagram of the rotating mechanism 100 provided in the fifth embodiment of the present application, and Figure 26 is a partial exploded structural diagram of the rotating mechanism 100 shown in Figure 25.

[0166] The embodiment shown in FIG25 differs from the embodiment shown in FIG5 in that the first intermediate swing arm 41 is rotatably and slidably connected to the first pressure plate 51, and the second intermediate swing arm 42 is rotatably and slidably connected to the second pressure plate 52. The first pressure plate 51 is rotatably and slidably connected to the first synchronous swing arm 63, and the second pressure plate 52 is rotatably and slidably connected to the second synchronous swing arm 64.

[0167] The second shaft 412 of the first intermediate swing arm 41 is mounted in the second sliding hole 514 and can rotate and slide within the second sliding hole 514. The fourth shaft 422 of the second intermediate swing arm 42 is mounted in the fourth sliding hole 524 and can rotate and slide within the fourth sliding hole 524. The first synchronous swing arm 63 is provided with a fifth shaft 637. In this embodiment, there are two fifth shafts 637. Both fifth shafts 637 extend parallel to the Y direction, and the two fifth shafts 637 are spaced apart. The first pressure plate 51 is provided with a seventh sliding hole 515 that mates with the fifth shaft 637. The seventh sliding hole 515 extends parallel to the X direction. One fifth shaft 637 is mounted in one seventh sliding hole 515, and each fifth shaft 637 can slide and rotate within the corresponding seventh sliding hole 515. The second synchronous swing arm 64 is provided with a sixth shaft (not shown). The sixth shaft extends parallel to the Y direction. The second pressing plate 52 is provided with an eighth sliding hole (not shown) that cooperates with the sixth shaft. The extending direction of the eighth sliding hole is parallel to the X direction. The sixth shaft is installed in the eighth sliding hole and can slide and rotate in the corresponding eighth sliding hole.

[0168] When the first fixed frame 21 rotates relative to the fixed base 10, it drives the first intermediate swing arm 41 to rotate. The first intermediate swing arm 41 drives the first main swing arm 31 to rotate relative to the fixed base 10, causing the first intermediate swing arm 41 to rotate and slide relative to the first pressure plate 51. Simultaneously, when the first fixed frame 21 rotates relative to the fixed base 10, it also drives the first pressure plate 51 and the first synchronous swing arm 63 to rotate relative to the fixed base 10, causing the first pressure plate 51 to rotate and slide relative to the first synchronous swing arm 63. When the second fixed frame 22 rotates relative to the fixed base 10, it drives the second intermediate swing arm 42 to rotate. The second intermediate swing arm 42 drives the second main swing arm 32 to rotate, causing the second intermediate swing arm 42 to rotate and slide relative to the second pressure plate 52. Simultaneously, when the second fixed frame 22 rotates relative to the fixed base 10, it also drives the second pressure plate 52 and the second synchronous swing arm 64 to rotate relative to the fixed base 10, causing the second pressure plate 52 to rotate and slide relative to the second synchronous swing arm 64.

[0169] In this embodiment, by rotatably connecting the first synchronous swing arm 63 to the first fixed frame 21 and also rotatably connecting to the first pressure plate 51, the rotational stability of the first pressure plate 51 can be improved. By rotatably connecting the second synchronous swing arm 64 to the second fixed frame 22 and also rotatably connecting to the second pressure plate 52, the rotational stability of the second pressure plate 52 can be improved, while also reducing the number of pressure plate swing arms and simplifying the structure of the rotation mechanism 100. Furthermore, in this embodiment, by rotatably connecting the first main swing arm 31 to the first intermediate swing arm 41 and also rotatably and slidably connecting to the first fixed frame 21, the rotational stability of the first main swing arm 31 and the first fixed frame 21 can be increased. By rotatably connecting the second main swing arm 32 to the second intermediate swing arm 42 and also rotatably and slidably connecting to the second fixed frame 22, the rotational stability of the second main swing arm 32 and the second fixed frame 22 can be increased.

[0170] Please refer to Figures 27 and 28. Figure 27 is a partial structural diagram of the rotating mechanism 100 provided in the sixth embodiment of the present application, and Figure 28 is a partial exploded structural diagram of the rotating mechanism 100 shown in Figure 27.

[0171] The embodiment shown in FIG27 differs from the embodiment shown in FIG5 in that the first main swing arm 31 is rotatably and slidably connected to the first pressure plate 51, and the first main swing arm 31 is also rotatably and slidably connected to the first fixing frame 21. The second main swing arm 32 is rotatably and slidably connected to the second pressure plate 52, and the second main swing arm 32 is also rotatably and slidably connected to the second fixing frame 22.

[0172] The first main swing arm 31 also has a first auxiliary shaft 317, which is fixed to a side of the first main swing arm 31 and opposite to the first shaft 313. The first fixing frame 21 has a fifth sliding hole 23 that mates with the first shaft 313. The first shaft 313 is mounted in the first sliding hole 513 and can rotate and slide within the first sliding hole 513. The first auxiliary shaft 317 is mounted in the fifth sliding hole 23 and can rotate and slide within the fifth sliding hole 23. The second main swing arm 32 also has a second auxiliary shaft (not shown). The second auxiliary shaft is fixed to a side of the second main swing arm 32 and opposite to the third shaft 323. The second fixing frame 22 has a sixth sliding hole (not shown) that mates with the second auxiliary shaft. The third shaft 323 is mounted in the third sliding hole 523 and can rotate and slide within the third sliding hole 523. The second auxiliary shaft is mounted in the sixth sliding hole and can rotate and slide within the sixth sliding hole.

[0173] When the first fixed frame 21 rotates relative to the fixed base 10, it drives the first intermediate swing arm 41 to rotate. The first intermediate swing arm 41 drives the first main swing arm 31 to rotate relative to the fixed base 10. While the first main swing arm 31 rotates relative to the fixed base 10, it also rotates and slides relative to the first pressure plate 51. When the first fixed frame 21 rotates relative to the fixed base 10, it also drives the first main swing arm 31 to rotate relative to the fixed base 10 and rotates and slides relative to the first fixed frame 21. When the second fixed frame 22 rotates relative to the fixed base 10, it drives the second intermediate swing arm 42 to rotate. The second intermediate swing arm 42 drives the second main swing arm 32 to rotate. While the second main swing arm 32 rotates relative to the fixed base 10, it also rotates and slides relative to the second pressure plate 52. When the second fixed frame 22 rotates relative to the fixed base 10, it also drives the second main swing arm 32 to rotate relative to the fixed base 10 and rotates and slides relative to the second fixed frame 22.

[0174] In this embodiment, by rotatably connecting the first main swing arm 31 to the first intermediate swing arm 41 while also being rotatably and slidably connected to the first pressure plate 51, the rotational stability of the first main swing arm 31 and the first pressure plate 51 can be increased. By rotatably connecting the second main swing arm 32 to the second intermediate swing arm 42 while also being rotatably and slidably connected to the second pressure plate 52, the rotational stability of the second main swing arm 32 and the second pressure plate 52 can be increased, while also reducing the number of pressure plate swing arms and simplifying the structure of the rotation mechanism 100. Furthermore, in this embodiment, by rotatably connecting the first main swing arm 31 to the first intermediate swing arm 41 while also being rotatably and slidably connected to the first fixing frame 21, the rotational stability of the first main swing arm 31 and the first fixing frame 21 can be increased. By rotatably connecting the second main swing arm 32 to the second intermediate swing arm 42 while also being rotatably and slidably connected to the second fixing frame 22, the rotational stability of the second main swing arm 32 and the second fixing frame 22 can be increased.

[0175] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A rotating mechanism, characterized in that: include: A fixed base, a first fixed frame, a second fixed frame, a first main swing arm and a first intermediate swing arm; The first fixing frame and the second fixing frame are respectively located on opposite sides of the fixed base in the width direction and can rotate relative to the fixed base, and the rotation directions of the first fixing frame and the second fixing frame are opposite; One end of the first main swing arm is rotatably connected to the fixed base, the other end of the first main swing arm is rotatably connected to the first intermediate swing arm, and one end of the first intermediate swing arm away from the first main swing arm is rotatably connected to the first fixed frame.

2. The rotation mechanism according to claim 1, characterized in that: The fixed base includes a first side and a second side, and the first side and the second side are respectively located on opposite sides of the fixed base in the width direction; the rotating mechanism includes a folded state, and when the rotating mechanism is in the folded state, the first main swing arm is located between the first side and the second side.

3. The rotation mechanism according to claim 2, characterized in that: When the rotating mechanism is in a folded state, the first intermediate swing arm is inclined relative to the first main swing arm toward the fixed base.

4. The rotation mechanism according to claim 3, characterized in that: The rotating mechanism also includes a flattened state. When the rotating mechanism is in the flattened state, the first fixing frame is unfolded relative to the second fixing frame. When the first fixing frame and the second fixing frame rotate toward the fixed base, the first fixing frame drives the first intermediate swing arm to rotate relative to the fixed base, and causes the first intermediate swing arm to rotate relative to the first fixing frame. The rotation of the first intermediate swing arm drives the first main swing arm to rotate relative to the fixed base, and causes the first main swing arm to rotate relative to the first intermediate swing arm, so that the first fixing frame is folded relative to the second fixing frame and the rotating mechanism is in the folded state.

5. The rotation mechanism according to claim 4, characterized in that: The first main swing arm includes a first rotating body and a first stop block, and the first stop block is fixedly connected to one end of the first rotating body; The first stop block and the first rotating body are both installed in the fixed base and can rotate in the fixed base. The end of the first rotating body away from the first stop block is rotationally connected to the first intermediate swing arm. When the rotating mechanism is in the folded state, the first stop block abuts against the fixed base.

6. The rotating mechanism according to claim 5, characterized in that: The rotating mechanism further includes a second main swing arm and a second intermediate swing arm, the second main swing arm being arranged opposite to the first main swing arm, one end of the second main swing arm being rotatably connected to the fixed base, the other end of the second main swing arm being rotatably connected to the second intermediate swing arm, and one end of the second intermediate swing arm being away from the second main swing arm being rotatably connected to the second fixed frame; When the second fixed frame rotates relative to the fixed base, it drives the second intermediate swing arm relative to the fixed base and causes the second intermediate swing arm to rotate relative to the second fixed frame. The rotation of the second intermediate swing arm drives the second main swing arm to rotate relative to the fixed base and causes the second main swing arm to rotate relative to the second intermediate swing arm.

7. The rotation mechanism according to claim 6, characterized in that: The rotating mechanism also includes a first pressure plate and a second pressure plate, the first pressure plate is slidably and rotatably connected to the first fixing frame, and when the first fixing frame rotates relative to the fixing base, it can drive the first pressure plate to rotate relative to the fixing base, and make the first pressure plate rotate and slide relative to the first fixing frame; the second pressure plate is slidably connected to the second fixing frame, and when the second pressure plate rotates relative to the fixing base, it can drive the second pressure plate to rotate relative to the fixing base, and make the second pressure plate rotate and slide relative to the second fixing frame.

8. The rotation mechanism according to claim 7, characterized in that: The first main swing arm and the first pressure plate are arranged side by side along the length direction of the fixed base, and the first main swing arm and the first pressure plate are rotatably and slidably connected; when the first pressure plate and the first main swing arm rotate relative to the fixed base, the first main swing arm also rotates and slides relative to the first pressure plate.

9. The rotation mechanism according to claim 8, characterized in that: A first shaft is provided on the side of the first main swing arm, and the first shaft extends toward the first pressure plate, and the extension direction of the first shaft is parallel to the length direction of the fixed base; the first pressure plate is provided with a first sliding hole, and the extension of the first sliding hole intersects with the width direction of the fixed base, and the first shaft is installed in the first sliding hole and can rotate and slide in the first sliding hole.

10. The rotating mechanism according to any one of claims 7 to 9, characterized in that: The first intermediate swing arm and the first pressure plate are arranged side by side along the length direction of the fixed base, and the first intermediate swing arm and the first pressure plate are rotatably and slidingly connected; when the first pressure plate and the first intermediate swing arm rotate relative to the fixed base, the first intermediate swing arm also rotates and slides relative to the first pressure plate.

11. The rotating mechanism according to claim 10, characterized in that: A second shaft is provided on the side of the first intermediate swing arm, and the second shaft extends toward the first pressure plate, and the extension direction of the second shaft is parallel to the length direction of the fixed base; the first pressure plate is provided with a second sliding hole, and the extension direction of the second sliding hole is parallel to the extension direction of the first sliding hole, and the second shaft is installed in the second sliding hole and can rotate and slide in the second sliding hole.

12. The rotating mechanism according to claim 11, characterized in that: The second main swing arm and the second pressure plate are arranged side by side along the length direction of the fixed base, and the second main swing arm and the second pressure plate are rotatably and slidably connected; when the second pressure plate and the second main swing arm rotate relative to the fixed base, the second main swing arm also rotates and slides relative to the second pressure plate.

13. The rotating mechanism according to claim 12, characterized in that: The second intermediate swing arm and the second pressure plate are arranged side by side along the length direction of the fixed base, and the second intermediate swing arm and the second pressure plate are rotatably and slidingly connected; when the second pressure plate and the second intermediate swing arm rotate relative to the fixed base, the second intermediate swing arm also rotates and slides relative to the first pressure plate.

14. The rotating mechanism according to claim 6, characterized in that: The rotating mechanism further includes a synchronization assembly, which includes a first synchronization swing arm, a second synchronization swing arm, and a synchronization gear. The first synchronization swing arm and the second synchronization swing arm are respectively located on opposite sides of the synchronization gear and are fixedly connected to the synchronization gear. The synchronization gear is installed in the fixed base, and the first synchronization swing arm is slidably connected to the first fixed frame, and the second synchronization swing arm is slidably connected to the second fixed frame. When the first fixing frame rotates relative to the fixed base, it can drive the first synchronous swing arm to rotate relative to the fixed base, so as to drive the second synchronous swing arm to rotate relative to the fixed base through the synchronous gear, thereby driving the second fixing frame to rotate relative to the fixed base.

15. The rotating mechanism according to claim 14, characterized in that: The synchronization assembly further includes a damping spring, a first hinge seat, and a second hinge seat, wherein the damping spring is mounted on the fixed base, and the first hinge seat and the second hinge seat are both fixedly connected to the damping spring; the first synchronization swing arm includes a first hinge body, which is hinged to the first hinge seat, and the second synchronization swing arm includes a second hinge body, which is hinged to the second hinge seat; When the first synchronous swing arm rotates relative to the fixed base, the first hinge body abuts the first hinge seat. When the second synchronous swing arm rotates relative to the fixed base, the second hinge body abuts the second hinge seat. The first hinge seat and the second hinge seat jointly compress the damping spring and cause the damping spring to generate elastic force.

16. A foldable electronic device, characterized in that: It includes a first shell, a second shell, a display screen and a rotating mechanism as described in any one of claims 1 to 15, the rotating mechanism is connected between the first shell and the second shell, the display screen is installed on the first shell, the second shell and the rotating mechanism, and when the rotating mechanism rotates, the first shell and the second shell rotate relative to each other, thereby driving the display screen to bend or unfold.

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