Rotating mechanism and foldable electronic device

Abstract

The present application provides a rotating mechanism and a foldable electronic device, the rotating mechanism comprising a base, a first pressure plate, a first pressure plate swing arm, a first fixed plate and a first main swing arm, a first rotating groove and a second rotating groove arranged at intervals are provided on one side of the base; the first pressure plate comprises a first pressure plate slide groove, the first pressure plate swing arm comprises a first connecting plate and a first pressure plate swing body located at one end of the first connecting plate; the first main swing arm is fixed to one side of the first fixed plate, the first pressure plate and the first fixed plate are stacked and rotated; the first main swing arm is installed in the first rotating groove, and the first connecting plate is slidably installed in the first pressure plate slide groove; the first pressure plate swing body is installed in the second rotating groove, the first fixed plate and the first pressure plate rotate relative to the seat, and the first fixed plate and the first pressure plate rotate relative to each other, driving the first main swing arm to rotate along the first rotating groove, the first pressure plate swing body rotates in the second rotating groove, pushing the first connecting plate to slide in the first pressure plate slide groove along the width direction of the first pressure plate.

Description

Technical Field

[0001] 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

[0002] Flexible displays are bendable, allowing electronic devices equipped with them, such as foldable electronic devices, to switch between folded and unfolded states. Foldable electronic devices, with their large display area and portability, are increasingly popular with consumers. However, the hinge mechanisms of existing foldable electronic devices require a large number of rotating arms and linkage structures, resulting in a complex structure that increases design and assembly difficulties. Furthermore, the increased size and weight of the rotating structure hinders the slimming and lightweight design of the electronic devices. Summary of the Invention

[0003] The present application provides a rotating mechanism and a foldable electronic device to solve the technical problem of the complex structure of the existing rotating shaft mechanism.

[0004] The first embodiment of the present application provides a rotation mechanism for a foldable electronic device, including but not limited to a cell phone, a laptop computer, a personal digital assistant, a wearable device, or a mobile device. The foldable electronic device includes a main body and a display screen, and the rotation mechanism is installed in the main body to realize the folding and unfolding of the display screen. The rotation mechanism includes: a base, a first pressure plate, a first pressure plate swing arm, a first fixed plate, and a first main swing arm. One side of the base is provided with a first rotation groove and a second rotation groove spaced apart; the first pressure plate includes a first pressure plate slide groove; the first pressure plate swing arm includes a first connecting plate and a first pressure plate swing body located at one end of the first connecting plate;

[0005] One end of the first main swing arm is fixed to one side of the first fixed plate, the first pressure plate is stacked and rotatably connected to the first fixed plate, and is located on one side of the base; the first main swing arm is installed in the first rotating groove and can rotate relative to the first rotating groove; the first connecting plate is slidably installed in the first pressure plate slide groove and can slide relative to the first pressure plate slide groove; the first pressure plate swing body is installed in the second rotating groove and can rotate relative to the second rotating groove.

[0006] In this embodiment, the base, the first pressure plate and the first fixed plate have the same length direction, the first fixed plate and the first pressure plate rotate relative to the base, and the first fixed plate and the first pressure plate rotate relative to each other, and at the same time, drive the first main swing arm to rotate along the first rotation groove, and the first pressure plate swing body rotates in the second rotation groove, pushing the first connecting plate to slide in the first pressure plate slide groove along the width direction of the first pressure plate.

[0007] The first pressure plate and the first fixed plate are both strip-shaped plates, partially stacked. The first pressure plate swinging member and the first main swinging arm, located within the second rotation slot, are arc-shaped, enabling rotation relative to the base. This can be understood as the first pressure plate swinging member and the first main swinging arm rotating along a virtual axis, thereby enabling rotation of the first pressure plate and the first fixed plate. Furthermore, the first pressure plate and the first fixed plate can rotate relative to the base parallel to or at an angle to the base, presenting either a flattened or folded state. In one embodiment, the base includes two opposing ends, each of which is provided with a first pressure plate, a first pressure plate swinging arm, a first fixed plate, and a first main swinging arm. This ensures the bending stability of the rotating mechanism. In one embodiment, the first pressure plate, the first pressure plate swinging arm, the first fixed plate, and the first main swinging arm on the base are spaced apart on one side of the base, and the first rotation slot and the second rotation slot are symmetrically arranged about the base. That is, pressure plates and swinging arms are provided on both sides of the base, enabling bilateral bending.

[0008] The rotation mechanism provided by the present application includes sliding between the first pressure plate and the first pressure plate swing arm, and a rotational connection between the first pressure plate swing arm and the base, which secures the first main swing arm to the first fixed plate. Relative rotation occurs between the first fixed plate and the first pressure plate via a virtual axis formed by the first main swing arm and the first pressure plate swing arm, without relative sliding. This simplifies the structure of the rotation mechanism, allowing the rotation position and angle to be determined solely by the first main swing arm, thus reducing assembly difficulty. The rotation mechanism of the present application is applicable to foldable electronic devices, where the folding or unfolding of the foldable electronic device can be achieved through rotation of the rotation mechanism. Furthermore, the overall structure of the electronic device is simplified, reducing its overall weight.

[0009] In one embodiment, the rotating mechanism further includes a first guide portion, the first guide portion includes a first guide block and a first guide groove; the first guide block is arc-shaped, and the first guide groove is an arc-shaped groove.

[0010] The first guide block is disposed on the pressure plate at a distance from the first pressure plate slot. The first guide slot is disposed at the end of the first fixed plate and at a distance from the first main swing arm. The first guide block is rotatably mounted within the first guide slot. The first guide block rotates within the first guide slot to generate rotational displacement between the first fixed plate and the first pressure plate. In practice, the first guide block can also be understood as being slidably connected within the arc-shaped first guide slot.

[0011] In this embodiment, the first guide block is arc-shaped and the first guide groove is arranged in an arc shape to realize rotational guidance and connection. The relative rotation between the first fixed plate and the first pressure plate and the rotation relative to the base are guided by the first guide part to ensure the rotation accuracy between the first fixed plate and the first pressure plate. There is no need to set up an auxiliary swing arm, thereby simplifying the structure and weight of the rotation mechanism.

[0012] In one embodiment, the first pressure plate is a strip plate, which includes a first surface and a second surface arranged opposite to the first surface. The first guide block is protruded at one end of the second surface and extends in an arc shape away from the first pressure plate. The bending direction of the first guide block is toward the second surface.

[0013] The first fixed plate is a strip-shaped plate, which includes a first side, a second side opposite to the first side, and a first end face connecting the first side and the second side. The first guide groove is provided on the first end face. The first guide groove includes a first sub-slot adjacent to the first side. The first main swing arm is fixed to the first side. The first fixed plate and the first pressure plate are stacked and have the same navigation direction. The second surface faces the first fixed plate. The first guide block is installed in the first guide groove through the first sub-slot.

[0014] In this embodiment, the first main swing arm is fixed to the first fixed plate and is rotatably connected to the base. The first pressure plate swing arm is slidingly connected to the first pressure plate and is rotatably connected to the base. The rotation of the first guide block and the first guide groove realizes the rotational connection between the first fixed plate, thereby ensuring the rotational connectivity and stability between the first fixed plate, the first pressure plate and the base.

[0015] In one embodiment, the first main swing arm includes a first rotating body and a first main arm body connected to a fixed plate, the first main arm body is in the shape of a flat plate, the first rotating body is in the shape of an arc and is located at one end of the first main arm body, and a guide rib is convexly provided on the surface of the first rotating body facing away from the bending direction, and the length direction of the guide rib is the same as the length direction of the first rotating body; specifically, the first rotating body is an arc-shaped plate structure, and the structure of the first rotating body matches the structure of the first rotating groove on the base; the first rotating groove is an arc-shaped groove and a guide groove is provided on the bottom surface of the groove, and the guide rib rotates along the guide groove.

[0016] In this embodiment, the first rotating body of the first main swing arm is arc-shaped, which can be understood as a virtual axis rotation, realizing the rotational connection of the first fixed plate relative to the base; setting a guide rib to slide in the guide groove can ensure the rotation accuracy of the first main swing arm, and thus ensure the rotation accuracy of the first fixed plate.

[0017] In one embodiment, the rotating mechanism includes a second pressure plate, a first pressure plate swing arm, a second fixed plate and a second main swing arm, and a third rotation groove and a fourth rotation groove are provided at intervals on the other side of the base; the third rotation groove and the fourth rotation groove are located on two opposite sides of the base as are the first rotation groove and the second rotation groove; the second pressure plate is stacked and rotatably connected to the second fixed plate, and is located on the other side of the base symmetrically with the first pressure plate and the first fixed plate.

[0018] The second pressure plate and the second fixed plate are both strip plates, the second pressure plate includes a second pressure plate slide groove, the second pressure plate swing arm includes a second connecting plate and a second pressure plate swing body located at one end of the second connecting plate; the second main swing arm is fixed to one side of the second fixed plate; the base, the second pressure plate and the second fixed plate have the same length direction; the second main swing arm is installed in the first rotating groove, the second connecting plate is slidably installed in the second pressure plate slide groove; the second pressure plate swing body is installed in the third rotating groove;

[0019] The second fixed plate and the second pressure plate rotate relative to the base, and the second fixed plate and the second pressure plate rotate relative to each other. At the same time, the second fixed plate drives the second main swing arm to rotate along the first rotation groove, and the second pressure plate swing body rotates in the fourth rotation groove, pushing the second connecting plate to slide in the second pressure plate slide groove along the width direction of the second pressure plate. The rotation direction of the second fixed plate and the second pressure plate is opposite to the rotation direction of the first fixed plate and the first pressure plate.

[0020] For ease of description, this application provides a first reference plane and a second reference plane. The rotation mechanism is symmetrical about the first reference plane and the second reference plane. The first reference plane is parallel to the length direction of the base, and the second reference plane is parallel to the width direction of the base. The width direction of the base is also the width direction of the rotation mechanism, and the length direction of the base is also the length direction of the rotation mechanism. The first pressure plate and the second pressure plate are symmetrical about the first reference plane, the first fixed plate and the second fixed plate are symmetrical about the first reference plane, the first rotation groove and the third rotation groove are symmetrical about the first reference plane, and the second rotation groove and the fourth rotation groove are symmetrical about the first reference plane.

[0021] In this embodiment, the foldable electronic device can be folded or unfolded by rotating the rotating mechanism. When the foldable electronic device is in a folded state, the display screen is bent. When the foldable electronic device is in a flattened state, the display screen is flattened, and large-screen display and operation can be achieved. The first pressing plate and the second pressing plate, the first fixed plate and the second fixed plate are unfolded relative to the base, the first pressing plate and the second pressing plate, the first fixed plate and the second fixed plate and the base are arranged parallel, and the foldable electronic device is unfolded. The first pressing plate and the second pressing plate, the first fixed plate and the second fixed plate are folded relative to the base, the foldable electronic device is folded, and the display screen is bent.

[0022] The rotation mechanism provided by this application features sliding between the pressure plate and the pressure plate swing arm, and a rotational connection between the pressure plate swing arm and the base, securing the main swing arm to the fixed plate. Relative rotation occurs between the fixed plate and the pressure plate via a virtual axis connecting the main swing arm and the pressure plate swing arm, without any relative sliding. This simplifies the structure of the rotation mechanism, allowing only the main swing arm to determine the rotation position and angle, thus reducing assembly complexity. The rotation mechanism of this application is applicable to foldable electronic devices, simplifying the overall structure of the electronic device and reducing its overall weight.

[0023] In one embodiment, the rotating mechanism includes a synchronization assembly, which includes a synchronization gear, a first synchronization swing arm and a second synchronization swing arm, wherein the first synchronization swing arm and the second synchronization swing arm are fixedly connected to the synchronization gear and are located on opposite sides of the synchronization gear; the synchronization gear is installed in the base, and the first synchronization swing arm and the second synchronization swing arm extend out of the base and are located on opposite sides of the base respectively.

[0024] The first fixed plate is provided with a first synchronous sliding groove, the second fixed plate is provided with a second synchronous sliding groove, the first synchronous swing arm is slidably mounted in the first synchronous sliding groove of the first fixed plate, and the second synchronous swing arm is slidably mounted in the second synchronous sliding groove;

[0025] The first synchronous swing arm is located between the first main swing arm and the first pressure plate swing arm, and the second synchronous swing arm is located between the second main swing arm and the second pressure plate swing arm. The first and second synchronous swing arms rotate synchronously, achieving synchronous swinging of the first main swing arm and the first pressure plate swing arm, as well as the second main swing arm and the second pressure plate swing arm.

[0026] The synchronization component of this embodiment uses synchronization gears to realize the rotation of the physical shaft. The rotating mechanism cooperates with the first fixed plate and the second fixed plate through the first pressure plate and the second pressure plate to realize the bidirectional rotation of the rotating mechanism to reach the bending and flattening state. By setting the first synchronization swing arm and the second synchronization swing arm, the first pressure plate and the second pressure plate can cooperate with the first fixed plate and the second fixed plate to realize the synchronous rotation, thereby ensuring the rotation accuracy of the rotating mechanism.

[0027] In one embodiment, when the rotating mechanism is in the folded state, the first and second pressure plates are arranged at an angle relative to the base, creating a clearance space. This provides bending space for the display screen, preventing it from being squeezed and damaged when the rotating mechanism is folded. Furthermore, when the rotating mechanism is in the folded state, the angled arrangement of the first and second pressure plates reduces the thickness of the rotating mechanism, contributing to the thinness and lightness of foldable electronic devices.

[0028] In one embodiment, when the rotating mechanism is in the folded state, displacement occurs between the first fixed plate and the first pressure plate, and the first fixed plate and the first pressure plate extend in the width direction. Displacement also occurs between the second fixed plate and the second pressure plate, and the second fixed plate and the second pressure plate extend in the width direction of the second pressure plate. In this embodiment, after the first and second pressure plates form an escape space, the first fixed plate and the first pressure plate extend in the width direction, increasing the width of the first pressure plate. Similarly, the extension of the second fixed plate and the second pressure plate in the width direction of the second pressure plate also increases the width of the second pressure plate. This, in turn, increases the size of the escape space, providing more space for the curved portion of the display screen and improving the safety of the curved portion of the display screen.

[0029] In one embodiment, the rotating mechanism further includes a second guide portion, the second guide portion including a second guide block and a second guide groove; the second guide block is arc-shaped, the second guide groove is an arc-shaped groove, the second guide block is provided on the pressure plate and spaced apart from the second pressure plate slide groove, the second guide groove is provided at the end of the fixed plate and spaced apart from the second main swing arm;

[0030] The second guide block is rotatably mounted in the second guide groove. The second guide block rotates in the second guide groove to generate a rotational displacement between the second fixing plate and the second pressing plate.

[0031] In this embodiment, the second guide block is arc-shaped and the second guide groove is arranged in an arc shape to realize rotational guidance and connection. The relative rotation between the second fixed plate and the second pressure plate and the rotation relative to the base are guided by the second guide part to ensure the rotation accuracy between the second fixed plate and the second pressure plate. There is no need to set up an auxiliary swing arm, thereby simplifying the structure and weight of the rotation mechanism.

[0032] In one embodiment, the second pressure plate includes a third surface and a fourth surface disposed opposite to the third surface. The second guide block is protruded from one end of the fourth surface and extends in an arc shape away from the second pressure plate. The bending direction of the second guide block is toward the fourth surface.

[0033] The second fixed plate includes a third side, a fourth side opposite to the third side, and a second end face connecting the third side and the fourth side. The second guide groove is provided on the second end face. The second guide groove includes a third sub-slot adjacent to the third side. The second main swing arm is fixed to the third side. The second fixed plate is stacked with the second pressure plate. The fourth surface faces the second fixed plate. The second guide block is installed in the second guide groove through the third sub-slot.

[0034] In this embodiment, the second main swing arm is fixed to the second fixed plate and is rotatably connected to the base. The second pressure plate swing arm is slidably connected to the first and second pressure plates and is rotatably connected to the base. The rotation of the second guide block and the second guide groove is used to realize the rotational connection between the second fixed plate, thereby ensuring the rotational connectivity and stability between the second fixed plate, the second pressure plate and the base.

[0035] In one embodiment, the base includes a bottom plate and a top plate, the top plate covers the bottom plate and forms a receiving space with the bottom plate, the first rotating groove and the second rotating groove are arranged on one side of the bottom plate, the third rotating groove and the fourth rotating groove are arranged on the other side of the bottom plate, and the first rotating groove, the second rotating groove, the third rotating groove and the fourth rotating groove are located in the receiving space.

[0036] The base also includes a first opening, a second opening, a third opening and a fourth opening. The first opening, the second opening, the third opening and the fourth opening are all arranged at the connection between the top plate and the bottom plate, and the first opening, the second opening, the third opening and the fourth opening correspond one by one to and are connected with the first rotation groove, the second rotation groove, the third rotation groove and the fourth rotation groove.

[0037] In this embodiment, the base is symmetrical about both the first and second reference planes. The base serves as the primary support structure for the rotation mechanism. The first and second openings allow for the passage of the first main swing arm and the first pressure plate swing arm, while the third and fourth openings allow for the passage of the second main swing arm and the second pressure plate swing arm, thereby achieving a rotational connection between the fixed plate and the pressure plate and the base. The base of this embodiment has a simple structure and is easy to install.

[0038] In one embodiment, the rotation mechanism includes a damping member that contacts the synchronous gear. When the synchronous gear rotates, a damping force is generated between the damping member and the synchronous gear. In this embodiment, when the synchronous gear rotates, the damping force between the synchronous gear and the damping member is generated, thereby improving the opening and closing feel of the rotation mechanism and enhancing the user experience.

[0039] The present application provides a foldable electronic device, which includes a first shell, a second shell, a display screen and a rotating mechanism as described above. The fixing plates of the rotating mechanism are respectively connected to the first shell and the second shell. 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.

[0040] When the foldable electronic device is in the unfolded state, the first and second shells are relatively unfolded, and the rotating mechanism is in the unfolded state. When the foldable electronic device is in the folded state, the first and second shells are relatively folded, and the rotating mechanism is in the folded state. The foldable electronic device provided in this embodiment employs the aforementioned rotating mechanism, resulting in a simple structure that facilitates assembly, reduces the weight of the entire device, and conserves space within the electronic device housing.

[0041] When the foldable electronic device is unfolded, the first and second housings and the rotating mechanism jointly support the display, ensuring normal display and enabling a large screen, enhancing the user experience. When the foldable electronic device is folded, the third portion of the display bends, leaving the first and second portions facing each other. At this point, the display is nestled between the first and second housings, minimizing the exposed area, significantly reducing the risk of damage and effectively protecting the display.

[0042] The display screen includes a first part, a second part and a third part. The third part is connected between the first part and the second part. The first part is installed on the first shell, the second part is installed on the second shell, and the third part is arranged opposite to the rotating mechanism.

[0043] When the foldable electronic device is in a folded state, the first pressing plate and the second pressing plate are arranged at an angle to form an escape space, and at least a portion of the third portion is located in the escape space.

[0044] When the rotating mechanism is in the folded state, the display screen is bent in the avoidance space, so that the foldable electronic device will not squeeze the display screen when in the folded state, thereby avoiding damage to the display screen and increasing the service life of the display screen.

[0045] This prevents the third part from bending at a large angle, avoiding undesirable phenomena such as creases on the display screen, and helps to extend the service life of the display screen.

[0046] In summary, the rotation mechanism provided by the present application includes the sliding of the first pressure plate and the first pressure plate swing arm, and the rotational connection between the first pressure plate swing arm and the base, which fixes the first main swing arm to the first fixed plate. Relative rotation occurs between the first fixed plate and the first pressure plate through the virtual axis of the first main swing arm and the first pressure plate swing arm, without relative sliding. This simplifies the structure of the rotation mechanism, and the rotation position and angle are determined only by the first main swing arm, reducing assembly difficulty. The rotation mechanism of the present application is applied to foldable electronic devices, and the folding or unfolding of the foldable electronic device can be achieved by rotating the rotation mechanism; and the overall structure of the electronic device is simplified, reducing the overall weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] 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.

[0048] Figure 1 is a schematic structural diagram of a foldable electronic device provided by an embodiment of the present application in a first state;

[0049] Figure 2 is a schematic structural diagram of a foldable electronic device provided by an embodiment of the present application in a second state;

[0050] Figure 3 yes Figure 2 A schematic diagram of the exploded structure of the foldable electronic device shown;

[0051] Figure 4 yes Figure 3 A schematic diagram of the rotating mechanism structure in the foldable electronic device is shown, wherein only a portion of the structure is shown;

[0052] Figure 5 yes Figure 4 A schematic diagram of a partially exploded structure of the rotating mechanism shown;

[0053] Figure 6 yes Figure 5 A schematic diagram of a portion of the structure of the pressure plate of the rotating mechanism shown;

[0054] Figure 7 yes Figure 5A schematic structural diagram of a fixed plate in the rotating mechanism shown;

[0055] Figure 8 yes Figure 5 A schematic diagram of the assembly structure of a fixed plate and a pressure plate of the rotating mechanism shown, wherein the assembly angle of the pressure plate and the fixed plate belongs to the expanded state of the rotating shaft mechanism;

[0056] Figure 9 yes Figure 5 A schematic structural diagram of the pressure plate swing arm in the rotating mechanism shown;

[0057] Figure 10 yes Figure 5 A schematic structural diagram of a synchronization component in the rotating mechanism shown;

[0058] Figure 11 yes Figure 4 A schematic diagram of a portion of the structure of the rotating mechanism shown in the folded state;

[0059] Figure 12 yes Figure 1 The diagram shows the structure of the foldable electronic device from an end view in a folded state. DETAILED DESCRIPTION

[0060] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0061] During the folding process of existing foldable electronic devices, the bend of the flexible display is easily squeezed by the support member, causing creases on the flexible display and even damaging the flexible display, shortening the service life of the flexible display. The rotation mechanism and foldable electronic device provided in the embodiments of the present application can prevent the bend of the flexible display from being squeezed, helping to extend the service life of the display.

[0062] See also Figure 1 and Figure 2 , Figure 1 1 is a schematic structural diagram of a foldable electronic device 1000 provided in an embodiment of the present application in a first state. Figure 2 3 is a schematic structural diagram of the foldable electronic device 1000 provided in an embodiment of the present application in the second state.

[0063] Figure 1 The foldable electronic device 1000 is shown in a folded state. Figure 2 The foldable electronic device 1000 is shown in an unfolded state. Figure 2The unfolding angle β of the foldable electronic device 1000 is shown to be 180 degrees. The foldable electronic device 1000 includes, but is not limited to, a cell phone, a notebook computer, a tablet computer, a personal computer, a personal digital assistant, a wearable device, or a mobile device. In the embodiments of the present application, the foldable electronic device 1000 is described as a cell phone.

[0064] It should be noted that the angles illustrated in the embodiments of this application are allowed to have slight deviations. For example, Figure 2 The unfolding angle β of the foldable electronic device 1000 shown 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 described below as examples can be understood in the same way.

[0065] The foldable electronic device 1000 shown in the embodiment of the present application is an electronic device that can be folded once. In other embodiments, the foldable electronic device 1000 can also be an electronic device that can be folded multiple times (more than twice). In this case, the foldable electronic device 1000 can include multiple parts, where two adjacent parts can be folded relatively close together until the foldable electronic device 1000 is in a folded state, and two adjacent parts can be unfolded relatively far apart until the foldable electronic device 1000 is in an unfolded state.

[0066] For ease of description, the width direction of the foldable electronic device 1000 is defined as the X direction, the length direction of the foldable electronic device 1000 is defined as the Y direction, and the thickness direction of the foldable electronic device 1000 is defined as the Z direction. The X direction, the Y direction, and the Z direction are perpendicular to each other.

[0067] See also Figure 3 , Figure 3 yes Figure 2 Schematic diagram of the exploded structure of the foldable electronic device shown.

[0068] The foldable electronic device 1000 includes a main body 200 and a display screen 300, which is mounted on the main body 200. The display screen 300 includes a display surface 340 and a mounting surface 350, which are arranged opposite 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 third portion 330. The third portion 330 is located between the first portion 310 and the second portion 320. The third portion 330 is flexible and can bend along the Y direction. In this embodiment, the display screen 300 is a flexible display screen, such as an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (OLED) display screen, a micro organic light-emitting diode (OLED) display screen, a micro organic light-emitting diode (OLED) display screen, or a quantum dot light-emitting diode (QLED) display screen. The first portion 310 and the second portion 320 are actually bendable even when not fixed.

[0069] The main body 200 includes a first housing 210, a second housing 220, and a rotation mechanism 100. The first housing 210 is provided with a first mounting slot 230, and the second housing 220 is provided with a second mounting slot 240. The first mounting slot 230 and the second mounting slot 240 are connected to form a mounting slot. The rotation mechanism 100 is mounted in the mounting slot 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 first and second housings 210, 220 can rotate relative to each other via the rotation mechanism 100, allowing the main body 200 to switch between a folded state and an unfolded state.

[0070] Both the first and second housings 210, 220 are further provided with a receiving groove (not shown) for accommodating the electronic device's processor, circuit board, camera module, and other electronic components and structural elements. The sides of the first and second housings 210, 220 facing away from the display screen 300 form the exterior surface of the electronic device, while the sides supporting the display screen 300 form the interior. In practice, a supporting plate is provided on the interior sides of the first and second housings 210, 220, enclosing the receiving groove. The display screen is mounted on the supporting plate and supports the flexible display screen 300.

[0071] The display screen 300 is mounted on the main body 200, with the mounting surface 350 fixedly connected to the main body 200. Specifically, the first housing 210 supports the first portion 310, 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 rotation mechanism 100 is positioned opposite the third portion 330 to achieve bending of the display screen.

[0072] The relative rotation of the first shell 210 and the second shell 220 causes the main body 200 to be in the folded state. This means that the first shell 210 and the second shell 220 rotate via the rotation mechanism 100 and approach each other, with the surfaces of the first shell 210 and the second shell 220 supporting the display screen 300 facing each other. In practice, during use, when the main body 200 is in the fully folded state, after the display screen 300 mounted on the first shell 210 and the second shell 220 are folded, the display surface 340 of the display screen 300 located on the first portion 310 and the display surface 340 located on the second portion 320 may partially contact each other, but may also fully contact each other. The first shell 210 and the second shell 220 rotate relative to each other so that during the unfolding process of the main body 200 (the first shell 210 and the second shell 220 can stay at any angle, for example, the first shell 210 and the second shell 220 bracket are nicknamed 90 degrees, and an angle of 120 is also possible, that is, the display screen 300 is in a semi-open state), the first shell 210 and the second shell 220 rotate through the rotating mechanism 100 and move away from each other. The angle between the first shell 210 and the second shell 220 becomes larger and larger until the first shell 210 and the second shell 220 rotate relative to each other so that the main body 200 is flattened and in the unfolded state. The angle between the first shell 210 and the second shell 220 can be close to or equal to 180 degrees. The first shell 210 and the second shell 220 are generally in a flat state. At the same time, the first shell 210 and the second shell 220 are relatively moved away from the display screen 300 and unfolded until the foldable electronic device 1000 is in the unfolded state, wherein the first shell 210 and the second shell 220 are relatively moved away from the display screen 300 and further unfolded until the foldable electronic device 1000 is in the unfolded state.

[0073] The first shell 210, the second shell 220 and the rotating mechanism 100 are arranged in sequence along the X direction and the sum of the dimensions between the three is the dimension of the main body 200 in the X direction (including assembly tolerance and assembly gaps between the three). The dimension of the main body 200 in the X direction is the same as the dimension of the display screen 300 and the electronic device along the X direction. Of course, the allowable tolerance range is included. The dimensions of the first shell 210, the second shell 220 and the rotating mechanism 100 along the Y direction are the same, and the dimensions may allow for assembly or production tolerances. The dimensions of the first shell 210, the second shell 220 and the rotating mechanism 100 along the Y direction are the dimensions of the main body 200 in the Y direction, and the dimensions of the main body 200 in the Y direction are the same as the dimensions of the display screen 300 and the foldable electronic device 1000 along the Y direction. Of course, a small amount of deviation (assembly and production tolerances) may also be allowed.

[0074] Combine Figure 1 The first housing 210 and the second housing 220 rotate relative to each other via the rotating mechanism 100. When the foldable electronic device 1000 is in the unfolded state, the display screen 300 has a large display area, enabling large-screen display and operation functions of the foldable electronic device 1000, improving the user experience. When the foldable electronic device 1000 is in the folded state, the display screen 300 is located between the first housing 210 and the second housing 220. The first housing 210 and the second housing 220 protect the display surface of the display screen 300, greatly reducing the probability of damage to the display screen 300. The overall size is reduced, making it easier to carry.

[0075] See also Figure 4 , Figure 4 yes Figure 3 The diagram shows an angled structural diagram of the rotating mechanism 100 in the foldable electronic device 1000, wherein only a portion of the structure is shown.

[0076] For ease of description, this application provides a second reference plane O and a first reference plane P. The second reference plane O is perpendicular to the Y direction, and the first reference plane P is perpendicular to the X direction. In practice, the second reference plane O and the first reference plane P are also planes of symmetry for the rotation mechanism 100, and the rotation mechanism 100 is symmetrical about the first reference plane P and the second reference plane O. In other embodiments, the rotation mechanism 100 may also have a partially symmetrical structure, a centrosymmetric structure, or a partially centrosymmetric structure.

[0077] Please also refer to Figure 5 , Figure 5 yes Figure 4 FIG. 1 is a schematic diagram of a partially exploded structure of the rotating mechanism 100 .

[0078] The rotating mechanism 100 includes a base 10, a pressure plate 20, a fixed plate 30, a guide portion 40, a main swing arm 50, a synchronization assembly 60, and a pressure plate swing arm 70. The synchronization assembly 60 includes a synchronization gear 65 and two synchronization swing arms 68, which are rotationally connected to the synchronization gear 65. The fixed plate 30 is used to fixedly connect to the first and second shells of the main body 200. The main swing arm 50 is fixed to the fixed plate 30 and rotationally connected to the base. The synchronization gear 65 is installed in the base 10, and the synchronization swing arms 68 are located on opposite sides of the base 10. The synchronization swing arms 68 are slidably and rotationally connected to the fixed plate 30. The synchronization gear 65 is installed in the base 10 and the synchronization swing arms 68 are rotationally connected to the synchronization gear, thereby realizing the rotational connection between the fixed plate 30 and the base 10. The pressure plate 20 and the fixed plate 30 are slidably connected via the guide portion 40, thereby realizing the connection between the pressure plate 20 and the shell. The pressure plate swing arm 70 is slidably mounted on the pressure plate 20 and is rotatably connected to the base 10. The pressure plate 20 is positioned opposite the third portion 330 of the display screen 300. After the rotation mechanism 100 is assembled with the first and second housings (i.e., the display screen), the pressure plate 20 and the base 10 are used to support the display screen 300 when the display screen is flat. When the first and second housings 210, 220 cause the display screen 300 to bend, the pressure plate 20 and the base 10 form a space to accommodate the third portion 330 of the display screen 300. The pressure plate 20 also supports the third portion 330 in the bent state, providing protection for the third portion 330.

[0079] In this embodiment, the guide portion 40 includes a guide block and a guide groove. The guide block is fixed to the pressure plate 20, and the guide groove is provided on the fixed plate 30. The guide block is mounted within the guide groove and can slide within the guide groove to achieve a sliding connection between the pressure plate 20 and the fixed plate 30. In this embodiment, the guide block is an arc-shaped block, and the guide groove is an arc-shaped groove, so that the arc-shaped guide block can slide along the guide groove in the length direction of the arc. The position and connection relationship between the guide block and the guide groove and the pressure plate 20 and the fixed plate 30 will be described in detail later in the description of the pressure plate 20 and the fixed plate 30.

[0080] After the rotating mechanism 100 is assembled with the shell and the display screen, the fixed plate 30 is fixedly connected to the shell. When the fixed plate 30 rotates relative to the base 10, it can drive the main swing arm 50, the synchronous swing arm 68 and the pressure plate swing arm 70 to rotate relative to the base 10; at the same time, the fixed plate 30 drives the pressure plate 20 to rotate relative to the base 10 through the guide part 40, and the synchronous swing arm 68 and the pressure plate swing arm 70 slide relative to the pressure plate 20, thereby realizing the rotation of the rotating mechanism 100 and the relative rotation of the first shell and the second shell, thereby driving the bending of the display screen 300.

[0081] It should be noted that the rotating mechanism 100 is symmetrical about the first reference plane P and the second reference plane O. The pressure plate 20, the fixed plate 30, the guide portion 40, the main swing arm 50, the synchronization assembly 60, and the pressure plate swing arm 70 constitute a set of substructures. The entire rotating mechanism 100 has at least two sets of such substructures. A set of substructures is provided at opposite ends of the base 10. That is, one end of the base 10 is provided with the pressure plate 20, the fixed plate 30, the guide portion 40, the main swing arm 50, the synchronization assembly 60, and the pressure plate swing arm 70, while the other end of the base 10 is also provided with the pressure plate 20, the fixed plate 30, the guide portion 40, the main swing arm 50, the synchronization assembly 60, and the pressure plate swing arm 70. In order to enhance the stability of the entire rotating mechanism 100, two sets of substructures are further provided between the two terminal structures of the base 10. The above-mentioned substructures are all symmetrical about the first reference plane P. The second reference plane O is provided between the two sets of substructures between the two ends of the base 10. It should be noted that, in other substructures located between the two ends of the base 10 , the guide portion 40 may be omitted according to actual circumstances.

[0082] The synchronization assembly 60 includes two synchronization swing arms 68. Specifically, in each substructure, the pressure plate 20 includes a first pressure plate 21 and a second pressure plate 22; the fixed plate 30 includes a first fixed plate 31 and a second fixed plate 32; the first guide portion 40a includes a first guide portion 40a and a second guide portion 40b; the main swing arm 50 includes a first main swing arm 51 and a second main swing arm 52; and the synchronization swing arm 68 includes a first synchronization swing arm 68a and a second synchronization swing arm 68b. The pressure plate swing arm 70 includes a first pressure plate swing arm 71 and a second pressure plate swing arm 72. The first synchronization swing arm 68a and the second synchronization swing arm 68b are rotatably connected to opposite sides of the synchronization gear 65. The first guide portion 40a includes a first guide block 41a and a first guide slot 42a; the second guide portion 40b includes a second guide block 41b and a second guide slot 42b.

[0083] In the following specific embodiments, the description will focus on the pressure plate 20, fixed plate 30, guide portion 40, main swing arm 50, synchronization assembly 60, and pressure plate swing arm 70 in one substructure. The pressure plate 20, fixed plate 30, guide portion 40, main swing arm 50, synchronization assembly 60, and pressure plate swing arm 70 in the other substructures are identical or symmetrically identical to the corresponding pressure plate 20, fixed plate 30, guide portion 40, main swing arm 50, synchronization assembly 60, and pressure plate swing arm 70 in the same substructure. Of course, in other embodiments, the structures of the pressure plate 20, fixed plate 30, guide portion 40, main swing arm 50, synchronization assembly 60, and pressure plate swing arm 70 in the other substructures may differ from those of the corresponding pressure plate 20, fixed plate 30, guide portion 40, main swing arm 50, synchronization assembly 60, and pressure plate swing arm 70 in the same substructure.

[0084] Continue reading Figure 4 and Figure 5The base 10 is a hollow body with a receiving space inside. The base 10 includes a top plate 11 and a bottom plate 12; the top plate 11 is a plate body, and the bottom plate 12 is a groove-shaped structure. The top plate 11 covers the bottom plate 12 to close the groove of the bottom plate 12 and form a receiving space. The bottom plate 12 includes a panel 121, a first side plate 122, a second side plate 123, a first end plate and a second end plate (not shown). The first side plate 122 and the second side plate 123 are arranged opposite to each other, and the first side plate 122 and the second side plate 123 are respectively connected to the opposite sides of the panel 121 in the X direction. The first end plate and the second end plate are opposite to each other, and the first end plate and the second end plate are both connected between the first side plate 122 and the second side plate 123, and are respectively connected to the opposite sides of the panel 121 in the Y direction.

[0085] The surface of the panel 121 facing the top plate 11 is provided with a first and second rotation grooves (not shown) along the X-axis. The bottom walls of the first and second rotation grooves are both arc-shaped, spaced apart and located within the receiving space. The first side plate 122 is provided with a first opening 125, a second opening 126, and a third opening 127, corresponding to the first and second rotation grooves and the synchronous swing arm 68. The first opening 125 communicates with the first rotation groove, the second opening 126 communicates with the second rotation groove, and the third opening 127 communicates with the receiving space and faces the synchronous gear 65. The first, second, and third openings 125, 126, and 127 all extend through the top plate 11; it can be understood that the first, second, and third openings 125, 126, 127 are located at the junction of the first side plate 122 and the top plate 11. The first and second openings 125, 126, respectively, allow the main swing arm 50 and the pressure plate swing arm 70 to pass through, allowing the first main swing arm 51 and the first pressure plate swing arm 71 to slide within the first and second rotation grooves.

[0086] Correspondingly, the surface of the panel 121 facing the top plate 11 is provided with a third and fourth rotation grooves along the X-direction. The bottom walls of the third and fourth rotation grooves are both arc-shaped, and the third and fourth rotation grooves are spaced apart and located within the receiving space. The second side plate 123 is provided with fourth, fifth, and sixth openings corresponding to the third and fourth rotation grooves and the synchronous swing arm 68. The fourth opening communicates with the third rotation groove, the fifth opening communicates with the fourth rotation groove, and the sixth opening communicates with the receiving space and faces the synchronous gear 65. The third rotation groove and the first rotation groove are symmetrical with the fourth rotation groove, and the second rotation groove and the fourth rotation groove are symmetrical with the fourth rotation groove. The fourth and fifth openings are respectively provided for the passage of the second main swing arm 52 and the second pressure plate swing arm 72, allowing the second main swing arm 52 and the second pressure plate swing arm 72 to slide within the third and fourth rotation grooves. In fact, the above-mentioned openings and rotation grooves on both sides of the base of this embodiment are symmetrical about the first reference plane P.

[0087] It should be noted that the openings and rotation grooves on the base for matching with the main swing arm 50, the synchronization assembly 60 and the pressure plate swing arm 70 are set according to the actual number and position of the substructures, that is, according to the number and position of the main swing arm 50, the synchronization assembly 60 and the pressure plate swing arm 70.

[0088] See also Figure 5 and Figure 6 , Figure 6 yes Figure 5 A schematic diagram of a portion of the structure of the pressure plate of the rotating mechanism shown;

[0089] The pressure plate 20 includes a first pressure plate 21 and a second pressure plate 22. The first pressure plate 21 and the second pressure plate 22 have the same structure, and the first pressure plate 21 and the second pressure plate 22 are symmetrical about the first reference plane P. The first pressure plate 21 and the second pressure plate 22 are respectively located on opposite sides of the base 10 in the X direction. In this embodiment, the size of the first pressure plate 21 and the second pressure plate 22 in the Y direction is the same as the size of the display screen 300 in the Y direction. Of course, a small amount of deviation may also be allowed. The following only introduces the structure of the pressure plate 20 shown in the figure. The other group of pressure plates 20 is symmetrical with the above-mentioned pressure plate 20 about the second reference plane O and will not be repeated. In other embodiments, the structures of the first pressure plate 21 and the second pressure plate 22 may not be exactly the same, or there may be some differences.

[0090] The first pressure plate 21 includes a first body 211 and a first pressure plate slide 213. A first guide block 41a is disposed on the first body 211. In practice, the first guide block 41a can be understood as a component of the first pressure plate 21. The first body 211 is a strip-shaped plate comprising a first surface 2111, a second surface 2112, a first end (not shown), and a second end. The first and second surfaces 2111, 2112 face away from each other, and are both perpendicular to the Z direction. The first end connects the first and second surfaces 2111, 2112.

[0091] The first pressure plate slot 213 extends through the first body 211 in the width direction. The first pressure plate slot 213 is configured to be slidably connected to the first pressure plate swing arm 71. Specifically, a protrusion (not shown) is provided on the second surface 2112 of the first body 211, and the first pressure plate slot 213 extends through opposite ends of the protrusion in the width direction of the first body 211.

[0092] The first guide block 41a is in the shape of an arc strip and is located at one end of the first pressure plate 21. One end of the first guide block 41a is fixedly connected to the second surface 2112, and the other end extends in an arc shape from the second surface 2112 away from the first body 211, with the first guide block 41a curving toward the first body 211.

[0093] The second pressure plate 22 includes a second body 221 and a second pressure plate slide 223. A second guide block 41b is provided on the first body 211. In practice, the second guide block 41b can be understood as a component of the second pressure plate 22. The second body 221 is a strip-shaped plate comprising a third surface 2211 and a fourth surface 2212. The third surface 2211 and the fourth surface 2212 are disposed opposite each other and are both perpendicular to the Z direction.

[0094] The second pressing plate slot 223 penetrates the second body 221 in the width direction of the second body 221. Specifically, a protrusion is provided on the second surface 2112 of the second body 221, and the second pressing plate slot 223 penetrates opposite ends of the protrusion in the width direction of the second body 221.

[0095] The second guide block 41b is in the shape of an arc. One end of the second guide block 41b is fixedly connected to the fourth surface 2212, and the other end extends in an arc from the second surface 2112 away from the second body 221, with the curvature of the second guide block 41b directed toward the second body 221. One end of the second slide groove 222 is fixedly connected to the fourth surface 2212, and the other end extends from the fourth surface 2212 away from the second body 221.

[0096] See also Figure 7 , Figure 7 yes Figure 5 A schematic structural diagram of the fixed plate in the rotating mechanism 100 is shown.

[0097] The fixing plates 30 include a first fixing plate 31 and a second fixing plate 32. The first and second fixing plates 31, 32 have identical structures and are located on opposite sides of the base 10 in the X-direction. The first and second fixing plates 31, 32 are symmetrical about the first reference plane P. The following description only describes the fixing plates 30 shown in the figure. The other set of fixing plates 30 is symmetrical about the second reference plane O and will not be repeated. In other embodiments, the structures of the first and second fixing plates 31, 32 may not be identical, or may differ slightly.

[0098] It should be noted that, using the fixed plate 30 as an example, the fixed plate 30 described above and below is symmetrical with respect to the second reference plane O and the first reference plane P. The fixed plate 30, located at the other end of the base 10 and symmetrical about the second reference plane O, includes a third fixed plate and a fourth fixed plate. The third and fourth fixed plates are symmetrical about the first reference plane P, contain the same components and shapes, and the positions of the components of the third and fourth fixed plates are symmetrical with respect to the first reference plane P. The positions of the third and fourth fixed plates on the base 10 are symmetrical with respect to the first reference plane P, and are therefore referred to as having the same structure. The fixed plate comprising the third and fourth fixed plates is symmetrical with the fixed plate 30 comprising the first and second fixed plates about the second reference plane O, and can be referred to as having the same fixed plate structure. The third and fourth fixed plates contain the same components and shapes as the first fixed plate 31, and the positions of the components are symmetrical with respect to the second reference plane O, and are therefore referred to as having the same structure. The third fixing plate has the same structure (including components, position, and shape) as the second fixing plate 32, and the fourth fixing plate has the same structure (including components, position, and shape) as the first fixing plate 31. Structures within other substructures that are symmetrical about the second reference plane O and the first reference plane P can be interpreted as structurally identical or structurally identical in the same way as the symmetry of the fixing plates.

[0099] The first fixed plate 31 is a strip-shaped plate structure. It includes a first sub-plate 311 and a first synchronous slide 312. The first main swing arm 51 is disposed on the first sub-plate 311 and can actually be integrally formed with the first sub-plate 311. The first guide groove 42a is disposed on the first sub-plate 311. Specifically, the first sub-plate 311 includes a first plate surface 3111, a second plate surface 3112, and a first end surface 3113. The first plate surface 3111 and the second plate surface 3112 are disposed in opposite directions. The first sub-plate 311 also includes a first side 3115 and a second side 3116, which are disposed in opposite directions and respectively connect the first plate surface 3111 and the second plate surface 3112. The first end surface 3113 is one end surface of the first sub-plate 311 and connects the first plate surface 3111 and the second plate surface 3112, as well as the first side 3115 and the second side 3116.

[0100] The first synchronization groove 312 extends through the first sub-plate 311 in the widthwise (X-axis) direction of the first sub-plate 311. The first synchronization groove 312 is configured to be slidably and rotationally connected to the first synchronization swing arm 68a (and the thickness of the first synchronization groove 312 (in the thickness direction of the first sub-plate 311) is greater than the thickness of the first synchronization swing arm 68a). In this embodiment, the thickness of the first synchronization groove 312 and the first guide groove 42a is greater than that of other locations on the first sub-plate 311, thereby ensuring the strength of the first synchronization groove 312 and the first guide groove 42a.

[0101] The first guide groove 42a is an arc-shaped groove, which is opened on the first end surface 3113 and passes through the first plate surface 3111. The arc shape of the first guide groove 42a matches the arc shape of the first guide block 41a, so that the first guide block 41a can rotate in the first guide groove 42a. Specifically, the bending direction of the first guide groove 42a is toward the first plate surface 3111. The notch in the length direction of the first guide groove 42a is located on the first end surface 3113, and the first guide groove 42a is provided with a first sub-notch 421a and a second sub-notch 422a at opposite ends. The first sub-notch 421a and the second sub-notch 422a pass through the first plate surface 3111 and are spaced apart. The first sub-notch 421a is close to the first side 3115, and the bottom wall of the first guide groove 42a faces the same direction as the first end surface 3113.

[0102] The first main swing arm 51 is connected to the first side 3115 and extends away from the first sub-plate 311 . The specific structure thereof will be described in detail later.

[0103] The second fixed plate 32 is a strip-shaped plate structure with a thickness. It includes a second sub-plate 321 and a second synchronous slide groove 322. The second main swing arm 52 is provided on the second sub-plate 321 and can actually be integrally formed with the second sub-plate 321. The second guide groove 42b is provided on the second sub-plate 321. Specifically, the second sub-plate 321 includes a third plate surface 3211, a fourth plate surface 3212, and a second end surface 3213. The third plate surface 3211 and the fourth plate surface 3212 are disposed in opposite directions. The second sub-plate 321 also includes a third side 3215 and a fourth side 3216, which are disposed in opposite directions and connect the third plate surface 3211 and the fourth plate surface 3212, respectively. The second end surface 3213 is one end surface of the second sub-plate 321 and connects the third plate surface 3211 and the fourth plate surface 3212, as well as the third side 3215 and the fourth side 3216.

[0104] The second synchronous sliding groove 322 penetrates the second sub-plate 321 in the width direction (X axis) of the second sub-plate 321. The second synchronous sliding groove 322 is used for sliding connection with the second synchronous swing arm 68b (see Figure 11 In this embodiment, the thickness of the second sub-plate 321 at the location where the second synchronous groove 322 and the second guide groove 42b are provided is greater than that at other locations, thereby ensuring the strength of the second synchronous groove 322 and the second guide groove 42b. The thickness of the second synchronous groove 322 is greater than the thickness of the second synchronous swing arm 68b.

[0105] The second guide groove 42b is an arc-shaped groove, which is opened on the second end surface 3213 and passes through the third plate surface 3211. The arc shape of the second guide groove 42b matches the arc shape of the second guide block 41b, so that the second guide block 41b can rotate within the second guide groove 42b. Specifically, the bending direction of the second guide groove 42b is toward the third plate surface 3211. The notch in the length direction of the second guide groove 42b is located on the second end surface 3213, and the second guide groove 42b is provided with a third sub-notch 423a and a fourth sub-notch 424a at opposite ends. The third sub-notch 423a and the fourth sub-notch 424a are located on the third plate surface 3211, and the third sub-notch 423a is close to the third side 3215. The bottom wall of the second guide groove 42b is oriented in the same direction as the second end surface 3213.

[0106] The second main swing arm 52 is connected to the third side 3215 and extends away from the second sub-plate 321 . The specific structure thereof will be described in detail later.

[0107] Please also refer to Figure 8 , Figure 8 yes Figure 5 The diagram shows the assembly structure of a fixed plate and a pressure plate of the rotating mechanism, where the assembly angle of the pressure plate and the fixed plate is that of the rotating shaft mechanism in its expanded state. The first pressure plate 21 and the first fixed plate 31 are stacked (partially stacked along the width of the first pressure plate 21). The second surface 2112 of the first pressure plate 21 is opposite and in contact with the second surface 3112 of the first fixed plate 31. The first guide block 41a slides into the first guide groove 42a through the first sub-slot 421a of the first guide groove 42a and can slide within the first guide groove 42a. Along the length of the first pressure plate 21, the width of the first guide block 41a is less than or equal to the depth of the first guide groove 42a, thereby avoiding increasing the length of the rotating mechanism. The first pressure plate 21 is rotatably connected to the base 10 via a pressure plate swing arm and a synchronous swing arm. The first fixed plate 31 rotates relative to the base 10, simultaneously driving the first pressure plate 21 to rotate relative to the base 10. At the same time, the first pressing plate 21 is driven to slide relative to the first fixing plate 31 , and the first guide block 41 a slides in the first guide groove 42 a , guiding the sliding of the first pressing plate 21 relative to the first fixing plate 31 .

[0108] The second pressure plate 22 and the second fixed plate 32 are stacked (in the width direction of the second pressure plate 22, the second pressure plate 22 and the second fixed plate 32 are partially stacked), the third surface 2211 of the second pressure plate 22 is opposite to and in contact with the fourth plate surface 3212 of the second fixed plate 32, and the second guide block 41b is slid into the second guide groove 42b by the third sub-slot 423a of the second guide groove 42b, and the second guide block 41b can slide in the second guide groove 42b.

[0109] The second pressure plate 22 is rotatably connected to the base 10 via a pressure plate swing arm and a synchronous swing arm. The second fixed plate 32 rotates relative to the base 10, simultaneously driving the second pressure plate 22 to rotate relative to the base 10 and simultaneously driving the second pressure plate 22 to slide relative to the second fixed plate 32. The second guide block 41b slides within the second guide groove 42b, guiding the sliding of the second pressure plate 22 and the second fixed plate 32.

[0110] The relative rotation between the first fixed plate 31 and the first pressure plate 21 and the rotation relative to the base 10 are guided by the guide part 40, thereby ensuring the rotation accuracy between the first fixed plate 31 and the first pressure plate 21, eliminating the need to set up an auxiliary swing arm, and simplifying the structure and weight of the rotation mechanism.

[0111] In this embodiment, when the rotating mechanism 100 is in the folded state, the first fixing plate 31 and the first pressure plate 21 move relative to each other, extending the first fixing plate 31 and the first pressure plate 21 in the width direction (the X-axis direction). Specifically, the first fixing plate 31 and the first pressure plate 21 move relative to each other in the width direction, increasing their combined width length (which can be understood as increasing the width dimension of the first pressure plate). The second fixing plate 32 and the second pressure plate 22 move relative to each other in the width direction, extending the second fixing plate 32 and the second pressure plate 22 in the width direction. Specifically, the second fixing plate 32 and the second pressure plate 22 move relative to each other in the width direction, increasing their combined width length (which can be understood as increasing the width dimension of the second pressure plate). This increase in the volume of the clearance space in the X-axis direction allows for a larger third portion of the display screen 300 to be accommodated, improving the safety of the display screen's folded portion.

[0112] Please continue reading Figure 7 The main swing arm 50 includes a first main swing arm 51 and a second main swing arm 52. The first main swing arm 51 and the second main swing arm 52 are symmetrical with respect to the first reference plane P and have the same structure, and the first main swing arm 51 and the second main swing arm 52 are respectively located on opposite sides of the fixed base 10 in the X direction. In this embodiment, the first main swing arm 51 and the second main swing arm 52 are arranged side by side along the X direction, and the first main swing arm 51 and the second main swing arm 52 are symmetrical relative to the first reference plane P. In other embodiments, the first main swing arm 51 and the second main swing arm 52 may also be staggered in the Y direction. In other embodiments, the structures of the first main swing arm 51 and the second main swing arm 52 may not be exactly the same, or there may be some differences.

[0113] The first main swing arm 51 includes a first rotating body 511 and a first main arm body 512. The first rotating body 511 is a curved plate-like structure, and the structure of the first rotating body 511 matches the structure of the first rotating groove on the base 10. The first rotating body 511 includes a first connecting end 5111 and a first free end 5112, which are respectively located at opposite ends of the first rotating body 511. In one embodiment, a guide rib 513 is provided on the surface of the first rotating body 511 facing away from the bending direction, and the length direction of the guide rib is the same as the length direction of the first rotating body 511. The bottom surface of the first rotating groove that cooperates with the guide rib 513 is provided with a guide groove. The bottom surface of the groove is arc-shaped and cooperates with the arc-shaped surface of the first rotating body 511 provided with the guide rib. When the first rotating body 511 rotates relative to the first rotating groove, the guide rib 513 slides in the guide groove to ensure the accuracy and stability of the first rotating body 511 driving the first main swing arm 51 to rotate relative to the base 10, thereby ensuring the stability of the fixed plate driving the shell to bend.

[0114] The first main arm 512 is in the shape of a flat plate. One end of the first main arm 512 is fixedly connected to the first connecting end 5111, and the other end is fixedly connected to the first side 3115, allowing the first main swing arm 51 to extend away from the first sub-plate 311. The first free end 5112 of the first main swing arm 51 extends into the base 10 through the first opening 125. The first rotating body 511 is accommodated in the first rotating groove and can slide along the first rotating groove to achieve rotation of the first main swing arm 51. The rotation direction is the direction of the arc extension of the first rotating body 511, that is, it rotates in the direction of rotation of the fixed plate.

[0115] The second main swing arm 52 includes a second rotating body 521 and a second main arm body 522. The second rotating body 521 is an arc-shaped plate-like structure, and the structure of the second rotating body 521 matches the structure of the second rotating groove. The second rotating body 521 includes a second connecting end 5211 and a second free end 5212, which are respectively located at opposite ends of the second rotating body 521. In one embodiment, a guide rib 523 is provided on the surface of the second rotating body 521 facing away from the bending direction. The length of the guide rib 523 is the same as the length of the second rotating body 521. The bottom surface of the second rotating groove that cooperates with the guide rib is provided with a guide groove. The bottom surface of the groove is arc-shaped and cooperates with the arc-shaped surface of the second rotating body 521 provided with the guide rib. When the second rotating body 521 rotates relative to the second rotating groove, the guide rib 523 slides in the guide groove to ensure the accuracy and stability of the second rotating body 521 driving the second main swing arm 52 to rotate relative to the base 10, thereby ensuring the stability of the fixed plate driving the shell to bend.

[0116] The second main arm 522 is planar and plate-shaped. One end of the second main arm 522 is fixedly connected to the second connecting end 5211, and the other end is fixedly connected to the third side 3215 of the second fixing plate 32. The second free end 5212 of the second main swing arm 52 extends into the base 10 through the fourth opening. The second rotating body 521 is accommodated in the rotating groove and can slide along the third rotating groove, thereby enabling the second main swing arm 52 to rotate with the second fixing plate 32.

[0117] See Figure 9 , Figure 9 yes Figure 5 The schematic diagram of the structure of the pressure plate swing arm in the rotating mechanism shown in FIG. The pressure plate swing arm 70 includes a first pressure plate swing arm 71 and a second pressure plate swing arm 72. The first pressure plate swing arm 71 and the second pressure plate swing arm 72 are symmetrical about the first reference plane P. The first and second pressure plate swing arms 71, 72 have identical structures and are located on opposite sides of the base 10 in the X direction. In other embodiments, the structures of the first and second pressure plate swing arms 71, 72 may not be identical, or may differ slightly.

[0118] The first pressure plate swing arm 71 includes a first connecting plate 711 and a first pressure plate swing body 712. The first connecting plate 711 is a rectangular plate, and the first pressure plate swing body 712 is an arc-shaped plate, including a first end and a second end opposite to the first end (not marked in the figure). The first end and the second end are the two ends of the arc length direction of the arc-shaped plate, and the second end is connected to one end of the first connecting plate 711. In fact, the first connecting plate 711 and the first pressure plate swing body 712 are an integrally formed plate structure. Figure 11 The first connecting plate 711 is slidably installed in the first pressure plate slide groove 213 of the first pressure plate 21, the first pressure plate swing body 712 is located outside the first pressure plate slide groove 213, the first pressure plate swing body 712 and the first guide block 41a are respectively located on the opposite sides of the width direction of the first pressure plate 21, and the first pressure plate swing body 712 and the first guide block 41a are staggered.

[0119] The first pressure plate swinging body 712 passes through the second opening 126 and is installed in the second rotation groove, and slides along the second rotation groove, thereby realizing the rotation of the first pressure plate swing arm 71 relative to the second rotation groove (base 10). When the first pressure plate 21 rotates, it drives the first pressure plate swinging body 712 to rotate, and the first connecting plate 711 slides and moves in the first pressure plate slot 213; thereby driving the first pressure plate swinging body 712 to rotate relative to the base 10, thereby realizing the rotation of the first pressure plate 21 and the first pressure plate swinging arm 71 relative to the base 10. In this embodiment, by providing the first pressure plate swinging arm 71 and driving the first pressure plate swinging arm 71 to rotate via the first pressure plate 21, the first pressure plate 21 can be rotated relative to the base 10, thereby improving the stability of the rotation of the first pressure plate 21.

[0120] The second pressure plate swing arm 72 includes a second connecting plate 721 and a second pressure plate swing body 722. The second connecting plate 721 is a rectangular plate, and the second pressure plate swing body 722 is an arc-shaped plate, including a third end and a fourth end (not shown) opposite to the third end. The fourth end is connected to one end of the second connecting plate 721. In fact, the second connecting plate 721 and the second pressure plate swing body 722 are formed into an integral plate structure. Figure 11 The second connecting plate 721 is slidably installed in the second pressure plate slide groove 223 of the second pressure plate 22, the second pressure plate swing body 722 is located outside the second pressure plate slide groove 223, the second pressure plate swing body 722 and the second guide block 42a are respectively located on the opposite sides of the width direction of the second pressure plate 22, and the second pressure plate swing body 722 and the second guide block 42a are staggered.

[0121] The second pressure plate swing body 722 passes through the fifth opening and is installed in the fourth rotation groove, and slides along the fourth rotation groove, thereby realizing the rotation of the second pressure plate swing arm 72 relative to the fourth rotation groove (base 10). When the second pressure plate 22 rotates, it drives the second pressure plate swing body 722 to rotate, and the second connecting plate 721 slides and displaces in the second pressure plate slot 223; thereby driving the second pressure plate swing body 722 to rotate relative to the base 10, thereby realizing the rotation of the second pressure plate 22 and the second pressure plate swing arm 72 relative to the base 10. In this embodiment, by providing the second pressure plate swing arm 72 and driving the second pressure plate swing arm 72 to rotate via the second pressure plate 22, the second pressure plate 22 can be rotated relative to the base 10, thereby improving the stability of the rotation of the second pressure plate 22.

[0122] See also Figure 10 , Figure 10 yes Figure 5The schematic diagram of the structure of the synchronization assembly in the rotating mechanism shown in FIG. The synchronization assembly 60 includes a synchronization gear 65 and a synchronization swing arm 68. The synchronization swing arm 68 includes a first synchronization swing arm 68a and a second synchronization swing arm 68b. The first synchronization swing arm 68a and the second synchronization swing arm 68b are rotatably connected to opposite sides of the synchronization gear 65. The synchronization gear 65 is mounted in the base 10. The first synchronization swing arm 68a and the second synchronization swing arm 68b extend out of the base 10 through the third opening 127 and the sixth opening, respectively, and are located on opposite sides of the base 10. In this embodiment, the first synchronization swing arm 68a and the second synchronization swing arm 68b are strip-shaped plates. The ends of the first synchronization swing arm 68a and the second synchronization swing arm 68b away from the synchronization gear 65 have a rotation axis. One side of the rotation axis of the first synchronization swing arm 68a is connected to the end of the first synchronization swing arm 68a, and its axial direction is aligned with the width of the first synchronization swing arm 68a. In this embodiment, the length of the rotation axis is greater than or equal to the width of the first synchronization swing arm 68a. One side of the rotating shaft on the second synchronous swing arm 68b is connected to the end of the second synchronous swing arm 68b, and the axial direction is the same as the width direction of the second synchronous swing arm 68b; the length of the rotating shaft in this embodiment is greater than or equal to the width of the second synchronous swing arm 68b.

[0123] The first synchronous swing arm 68a and the second synchronous swing arm 68b are symmetrical with respect to the first reference plane P and have the same structure. Figure 11 The first synchronous swing arm 68a is located between the first main swing arm 51 and the first pressure plate swing arm 71, and the second synchronous swing arm 68b is located between the second main swing arm 52 and the second pressure plate swing arm 72. In other embodiments, the structures of the first synchronous swing arm 68a and the second synchronous swing arm 68b may not be exactly the same, or may have some differences.

[0124] The synchronous gear 65 includes a first gear 651, a second gear 652, and an intermediate gear 653. The first gear 651, the intermediate gear 653, and the second gear 652 are arranged side by side, with the intermediate gear 653 located between the first gear 651 and the second gear 652 and meshing with the first gear 651 and the second gear 652. In this embodiment, there are two intermediate gears 653. In other embodiments, there may be one, three, or more intermediate gears 653. One end of the first synchronous swing arm 68a is fixedly connected to the first gear 651, and one end of the second synchronous swing arm 68b is fixedly connected to the second gear 652.

[0125] The first synchronous swing arm 68a is installed in the first synchronous slot 312 of the first fixed plate 31. The first synchronous swing arm 68a can slide along the first synchronous slot 312. Because the thickness of the first synchronous slot 312 is greater than the width of the first synchronous swing arm 68a, and the first synchronous swing arm 68a is provided with a rotating shaft, the first synchronous swing arm 68a rotates relative to the first synchronous slot 312 as the synchronous gear 65 rotates, that is, the first synchronous swing arm 68a rotates and slides in the first synchronous slot 312, that is, it rotates and slides relative to the first fixed plate 31. The second synchronous swing arm 68b is installed in the second synchronous slide groove 322 of the second fixed plate 32. The second synchronous swing arm 68b can slide along the second synchronous slide groove 322. Because the thickness of the second synchronous slide groove 322 is greater than the width of the second synchronous swing arm 68b, and the second synchronous swing arm 68b is provided with a rotating shaft, the second synchronous swing arm 68b rotates relative to the second synchronous slide groove 322 as the synchronous gear 65 rotates, that is, the second synchronous swing arm 68b rotates and slides with the second synchronous slide groove 322, that is, it rotates and slides relative to the second fixed plate 32.

[0126] The synchronous swing arm 60 also includes a damping member 66. In this embodiment, the damping member 66 is composed of multiple damping plates, which are stacked in layers. The damping member 66 is sleeved onto the side of the synchronous gear 65, and the synchronous gear 65 can rotate relative to the damping member 66. When the synchronous gear 65 rotates, a damping force is generated between the synchronous gear 65 and the damping member 66, thereby improving the opening and closing feel of the rotating mechanism 100 and enhancing the user experience.

[0127] See also Figure 11 , Figure 11 yes Figure 4The diagram shows a partial structure of the rotating mechanism in the folded state; it should be noted that the first pressure plate 21 is slidably connected by the first guide block 41a and the first guide groove 42a, and the first pressure plate swing arm 71 is slidably connected in the first pressure plate slide groove 213 on the first pressure plate 21, the first pressure plate swing arm 71 is rotatably connected to the base 10, the first main swing arm 51 is fixed to the first fixed plate 31, and is rotatably connected to the first rotating groove of the base 10, the synchronous gear 65 of the synchronization assembly 60 is fixed in the base 10, the first synchronization swing arm 68a is slidably connected to the first synchronization slide groove 312 of the first fixed plate 31 (can slide relative to each other and will not fall off from the first synchronization slide groove 312), therefore, the first fixed plate 31, the first pressure plate 21 and the base 10 are rotatably and slidably connected, and are mutually limited, the first fixed plate 31 and the first pressure plate 21 only have a rotational relationship, and can be fixedly connected to the first shell 210 (fixed by glue). Similarly, the second pressure plate 22 is slidably connected via the second guide block 41b and the second guide groove 42b. A second pressure plate swing arm 72 is slidably connected within the second pressure plate slot 223 on the second pressure plate 22. The second pressure plate swing arm 72 is rotationally connected to the base 10. The second main swing arm 52 is fixed to the second fixed plate 32 and rotatably connected to the second rotation groove of the base 10. The synchronous gear 65 of the synchronization assembly 60 is fixed within the base 10. The second synchronization swing arm 68b is slidably connected to the second synchronization slot 322 of the second fixed plate 32 (relatively slidable without falling out of the second synchronization slot 322). Therefore, the second fixed plate 32, the first pressure plate 22, and the base 10 are rotatably and slidably connected. The second fixed plate 32 and the second pressure plate 22 only have a rotational relationship and can be fixedly connected (fixed by glue) to the second housing 220. This thereby realizes the rotation of the rotation mechanism. In fact, when there is no second pressure plate, second fixed plate, second pressure plate swing arm and second main swing arm, there is no need for a synchronous swing arm. In this way, the rotation mechanism can drive the first shell or the second shell to rotate (that is, unilateral rotation), and the purpose of folding the display screen can be achieved.

[0128] Please also refer to Figure 11 and Figure 12 , Figure 12 yes Figure 1 The diagram shows the structure of the foldable electronic device from an end view in a folded state.

[0129] The first fixing plate 31 rotates relative to the base 10 under the action of the external force (the first housing 210). Figure 11In the process, the first fixed plate 31 is rotated clockwise by ω1, and the first fixed plate 31 drives the first main swing arm 51 to rotate clockwise by ω1. The first rotating body 511 rotates in the first rotating groove toward away from the base 10, and the first synchronous swing arm 68a rotates along with the first fixed plate 31 and slides in the first synchronous slide groove 312 at the same time. At the same time, the first pressure plate swing body 712 of the first pressure plate swing arm 71 rotates in the second rotating groove toward away from the base 10, thereby driving the first pressure plate 21 to rotate along with the first fixed plate 31, and the first guide block 41a slides in the first guide groove 42a, thereby realizing synchronous rotation between the first pressure plate 21 and the first fixed plate 31 to ensure the rotation trajectory. When the first synchronous swing arm 68a rotates, the synchronous gear 65 drives the second synchronous swing arm 68b to rotate relative to the base 10 while sliding in the second synchronous slide groove 322, thereby driving the second fixed plate 32 to rotate counterclockwise ω2. The second fixed plate 32 drives the second main swing arm 52 to rotate counterclockwise ω2. The second rotating body 521 rotates in the second rotating groove in the direction away from the base 10. The second synchronous swing arm 68b rotates along with the second fixed plate 32 and slides in the second synchronous slide groove 322 at the same time. At the same time, the second pressure plate swing body 722 of the second pressure plate swing arm 72 rotates in the second rotating groove in the direction away from the base 10, thereby driving the second pressure plate 22 to rotate along with the second fixed plate 32. The second guide block 41a slides in the second guide groove 42a, thereby realizing synchronous rotation between the second pressure plate 22 and the second fixed plate 32. At this time, the rotating mechanism 100 is in a folded state (such as Figure 11 As shown), the first pressing plate 21 and the second pressing plate 22 are arranged at an angle to form an escape space for accommodating the third part of the display screen 300.

[0130] When an electronic device is folded (e.g. Figure 12 ), the first shell 210 and the second shell 220 rotate relative to each other, driving the first fixing plate 31 and the second fixing plate 32 of the rotating mechanism 100 to rotate until the rotating mechanism 100 is in a folded state (such as Figure 11 ), the first shell 210 and the second shell 220 overlap, and the third portion 330 of the display screen 300 is located on the inner side of the rotating mechanism 100, and the first portion 310 and the second portion 320 are partially or fully in contact with each other. Part of the third portion 330 is located between the first pressure plate 21 and the second pressure plate 22, and is spaced apart from the first pressure plate 21 and the second pressure plate 22. Part of the third portion 330 (the location where the arc bending angle is generated) is located in the avoidance space. The avoidance space can avoid the R angle formed when the third portion 330 is bent, so that the third portion 330 will not bend at a large angle, avoiding undesirable phenomena such as creases on the display screen 300, and helping to extend the service life of the display screen 300.

[0131] The first fixed plate 31 is rotated counterclockwise by ω2, and the first fixed plate 31 drives the first main swing arm 51 to rotate counterclockwise by ω2, and the first rotating body 511 rotates toward the base 10 in the first rotating groove (the first rotating body 511 moves into the first rotating groove), and the first synchronous swing arm 68a rotates away from the base 10 as the first fixed plate 31 rotates and slides into the first synchronous sliding groove 312 at the same time. At the same time, the first pressure plate swinging body 712 of the first pressure plate swing arm 71 rotates in the second rotating groove toward the base 10, thereby driving the first pressure plate 21 to rotate along with the first fixed plate 31, and the first guide block 41a slides counterclockwise by ω2 in the first guide groove 42a, thereby realizing synchronous rotation between the first pressure plate 21 and the first fixed plate 31.

[0132] When the first synchronous swing arm 68a rotates, the synchronous gear 65 drives the second synchronous swing arm 68b to rotate away from the base 10 and slide into the second synchronous sliding groove 322, thereby driving the second fixed plate 32 to rotate clockwise ω1. The second fixed plate 32 drives the second main swing arm 52 to rotate clockwise ω1, and the second rotating body 521 rotates in the second rotating groove toward the base 10; at the same time, the second pressure plate swing body 722 of the second pressure plate swing arm 72 rotates in the second rotating groove toward the base 10, thereby driving the second pressure plate 22 to rotate with the second fixed plate 32, and the second guide block 41a slides clockwise ω1 in the second guide groove 42a, thereby realizing the synchronous rotation between the second pressure plate 22 and the second fixed plate 32. At this time, the rotating mechanism 100 is flattened (such as Figure 4 ), the first pressing plate 21 and the second pressing plate 22 are connected to each other and are parallel to the base 10 to form a supporting surface for supporting the third part of the display screen 300.

[0133] When unfolding the electronic device from the folded state, the first shell 210 is pushed away from the second shell 220, the first part 310 and the second part 320 of the display screen 300 are moved away from each other, and the third part 330 is unfolded. At the same time, the first shell 210 applies an external force to the first fixing plate 31 of the rotating mechanism 100 to unfold the rotating mechanism until the first fixing plate 31 and the second fixing plate 32 are parallel to the X direction and unfolded relative to the base 10. The first pressing plate 21 and the second pressing plate 22 are arranged parallel and side by side. The first pressing plate 21, the second pressing plate 22 and the base 10 jointly support the display screen 300. At this time, the electronic device is completely flattened (as shown in FIG. Figure 2 ), the display surface 340 of the display screen 300 can be operated to achieve large-screen operation performance.

[0134] In the rotating mechanism 100 of the present application, the pressure plate 20 and the pressure plate swing arm 70 slide relative to each other, and there is no sliding connection between the fixed plate 30 and the pressure plate 20. Relative rotation is achieved through the main swing arm 50 and the pressure plate swing arm 70, and only the main swing arm 50 is needed to determine the angle and position. The guide part 40 between the pressure plate 20 and the fixed plate 30 is used for guidance. The overall rotating mechanism 100 has a simple structure, which reduces the requirements for assembly accuracy.

[0135] 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: base, first pressure plate, first pressure plate swing arm, first fixing plate and first main swing arm, A first rotation groove and a second rotation groove are spaced apart on one side of the base; The first pressing plate includes a first pressing plate chute, The first pressure plate swing arm includes a first connecting plate and a first pressure plate swing body located at one end of the first connecting plate; The first main swing arm is fixed to one side of the first fixing plate. The first pressing plate is stacked and rotatably connected to the first fixing plate and is located on one side of the base; The first main swing arm is installed in the first rotating groove and can rotate relative to the first rotating groove. The first connecting plate is installed in the first pressure plate slide groove and can slide relative to the first pressure plate slide groove; the first pressure plate swing body is installed in the second rotating groove and can rotate relative to the second rotating groove.

2. The rotation mechanism according to claim 1, characterized in that: The rotating mechanism further includes a first guide portion, which includes a first guide block and a first guide groove; the first guide block is arc-shaped, and the first guide groove is an arc-shaped groove. The first guide block and the first pressure plate slot are spaced apart on the first pressure plate, and the first guide slot is provided on the end of the first fixing plate and spaced apart from the first main swing arm; The first guide block is rotatably mounted in the first guide groove. The first guide block rotates in the first guide groove to generate a rotational displacement between the first fixing plate and the first pressing plate.

3. The rotation mechanism according to claim 2, characterized in that: The first pressing plate includes a first surface and a second surface opposite to the first surface. The first guide block is protruding from one end of the second surface and extends in an arc shape away from the first pressing plate. The bending direction of the first guide block is toward the second surface. The first fixing plate includes a first plate surface, a first side connected to the first plate surface, and a first end surface connected to the first side and the first plate surface. The first guide groove is provided on the first end surface. The first guide groove includes a first sub-notch adjacent to the first plate surface. The first main swing arm is fixed to the first side. The first fixing plate is stacked with the first pressing plate, the second surface faces the first plate surface of the first fixing plate, and the first guide block is installed in the first guide groove through the first sub-notch.

4. The rotation mechanism according to claim 1, wherein: The first main swing arm includes a first rotating body and a first main arm body connected to the first fixed plate. The first rotating body is arc-shaped. A guide rib is protruded on the surface of the first rotating body facing away from the bending direction. The length direction of the guide rib is the same as the length direction of the first rotating body. The first rotating groove is an arc-shaped groove and a guide groove is provided on the bottom surface of the groove, and the guide rib rotates along the guide groove.

5. The rotating mechanism according to any one of claims 1 to 4, characterized in that: The rotating mechanism includes a second pressure plate, a first pressure plate swing arm, a second fixed plate and a second main swing arm. The other side of the base is provided with a third rotation groove and a fourth rotation groove which are spaced apart from each other; the third rotation groove and the fourth rotation groove are located on two opposite sides of the base as are the first rotation groove and the second rotation groove; The second pressing plate includes a second pressing plate chute, The second pressure plate swing arm includes a second connecting plate and a second pressure plate swing body located at one end of the second connecting plate; The second main swing arm is fixed to one side of the second fixing plate; The second pressing plate is stacked and rotatably connected with the second fixing plate, and is located on the other side of the base. The base, the second pressing plate and the second fixing plate have the same length direction; The second main swing arm is installed in the first rotating groove, the second connecting plate is slidably installed in the second pressure plate sliding groove; the second pressure plate swing body is installed in the third rotating groove; The second fixed plate and the second pressure plate rotate relative to the base, and the second fixed plate and the second pressure plate rotate relative to each other. At the same time, the second fixed plate drives the second main swing arm to rotate along the first rotation groove, and the second pressure plate swing body rotates in the fourth rotation groove, pushing the second connecting plate to slide in the second pressure plate sliding groove along the width direction of the second pressure plate. The rotation direction of the second fixed plate and the second pressure plate is opposite to the rotation direction of the first fixed plate and the first pressure plate.

6. The rotating mechanism according to claim 5, characterized in that: The rotating mechanism includes a synchronization assembly, which includes a synchronization gear, a first synchronization swing arm and a second synchronization swing arm, wherein the first synchronization swing arm and the second synchronization swing arm are fixedly connected to the synchronization gear and are located on opposite sides of the synchronization gear; the synchronization gear is installed in the base, and the first synchronization swing arm and the second synchronization swing arm respectively extend out of the base and are located on opposite sides of the base. The first fixed plate is provided with a first synchronous sliding groove, the second fixed plate is provided with a second synchronous sliding groove, the first synchronous swing arm is slidably mounted in the first synchronous sliding groove of the first fixed plate, and the second synchronous swing arm is slidably mounted in the second synchronous sliding groove; The first synchronous swing arm is located between the first main swing arm and the first pressure plate swing arm, and the second synchronous swing arm is located between the second main swing arm and the second pressure plate swing arm.

7. The rotating mechanism according to claim 5, characterized in that: When the rotating mechanism is in the folded state, the first pressing plate and the second pressing plate are arranged at an angle relative to the base, and form an escape space.

8. The rotation mechanism according to claim 7, characterized in that: When the rotating mechanism is in a folded state, a movement displacement occurs between the first fixed plate and the first pressure plate, and the first fixed plate and the first pressure plate extend in the width direction; a movement displacement occurs between the second fixed plate and the second pressure plate, and the second fixed plate and the second pressure plate extend in the width direction of the second pressure plate.

9. The rotating mechanism according to claim 6, characterized in that: The rotating mechanism further includes a second guide portion, which includes a second guide block and a second guide groove; the second guide block is arc-shaped, and the second guide groove is an arc-shaped groove. The second guide block is provided on the pressure plate and is spaced apart from the second pressure plate slot. The second guide slot is provided at the end of the second fixing plate and is spaced apart from the second main swing arm. The second guide block is rotatably mounted in the second guide groove. The second guide block rotates in the second guide groove to generate a rotational displacement between the second fixing plate and the second pressing plate.

10. The rotating mechanism according to claim 9, characterized in that: The second pressing plate includes a third surface and a fourth surface arranged opposite to the third surface. The second guide block is protruded from one end of the fourth surface and extends in an arc shape away from the second pressing plate. The bending direction of the second guide block is toward the fourth surface. The second fixing plate includes a third plate surface, a third side disposed opposite to the third plate surface, and a second end surface connecting the third side and the third plate surface. The second guide groove is provided on the second end surface. The second guide groove includes a third sub-notch adjacent to the third side. The second main swing arm is fixed to the third side. The second fixing plate is stacked with the second pressing plate, the fourth surface faces the third plate surface of the second fixing plate, and the second guide block is installed in the second guide groove through the third sub-notch.

11. The rotating mechanism according to claim 6, characterized in that: The base includes a bottom plate and a top plate, the top plate covers the bottom plate and forms a receiving space with the bottom plate, the first rotation groove and the second rotation groove are provided on one side of the bottom plate, the third rotation groove and the fourth rotation groove are provided on the other side of the bottom plate, and the first rotation groove, the second rotation groove, the third rotation groove and the fourth rotation groove are located in the receiving space, The base also includes a first opening, a second opening, a third opening and a fourth opening, and the first opening, the second opening, the third opening and the fourth opening are all arranged at the connection between the top plate and the bottom plate, and the first opening, the second opening, the third opening and the fourth opening correspond to and are connected with the first rotation groove, the second rotation groove, the third rotation groove and the fourth rotation groove one by one.

12. The rotating mechanism according to claim 6, characterized in that: The rotating mechanism includes a damping member, which is in contact with the synchronous gear. When the synchronous gear rotates, a damping force is generated between the damping member and the synchronous gear.

13. 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 12, 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.

14. The foldable electronic device according to claim 13, wherein: The display screen includes a first part, a second part and a third part, the third part is connected between the first part and the second part, the first part is installed on the first shell, the second part is installed on the second shell, and the third part is arranged opposite to the rotating mechanism. When the foldable electronic device is in a folded state, the first pressing plate and the second pressing plate are arranged at an angle to form an escape space, and at least part of the third portion is located in the escape space.

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