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, the first pressure plate comprising a first surface and a second surface, a first block being provided on the second surface, a first guide groove being provided on the first block, the first pressure plate swing arm being fixed to the second surface of the first pressure plate and spaced apart from the first block; the first main swing arm comprising a first side surface and a second side surface, a first guide rod being protruding from the first side surface, the first main swing arm being fixed to one end of the first fixed plate through the second side surface, the first pressure plate and the first fixed plate being stacked, the second surface facing the first fixed plate, the first guide rod being installed in the first guide groove, and the first guide rod being able to slide in the first guide groove along the width direction of the first pressure plate, the first pressure plate and the first fixed plate being located on one side of the base, the first main swing arm and the first pressure plate swing arm being rotatably installed on the same side of the base and spaced apart.

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] In a first aspect, the present application provides a rotation mechanism, which includes: a base, a first pressure plate, a first pressure plate swing arm, a first fixing plate and a first main swing arm.

[0005] The first pressing plate includes a first surface and a second surface disposed opposite to the first surface, a first block is disposed on the second surface, and a first guide groove is disposed on the first block.

[0006] The first pressure plate swing arm is fixed to the second surface of the first pressure plate and is spaced apart from the first block;

[0007] The first main swing arm includes a first side surface and a second side surface disposed opposite to the first side surface, a first guide rod is protruded from the first side surface, and the first main swing arm is fixed to one end of the first fixing plate through the second side surface.

[0008] The first pressing plate is stacked on the first fixing plate, the second surface faces the first fixing plate, the first guide rod is installed in the first guide groove, and the first guide rod can slide in the first guide groove along the width direction of the first pressing plate,

[0009] The first pressure plate and the first fixed plate are located on one side of the base, and the base, the first pressure plate and the first fixed plate have the same length direction; the first main swing arm and the first pressure plate swing arm are rotatably mounted on the same side of the base and are spaced apart.

[0010] The first pressure plate and the first fixed plate are both strip plates, the first pressure plate and the first fixed plate are partially stacked, and the parts of the first pressure plate swing arm and the first main swing arm located on the base are arc-shaped, which can realize rotation relative to the base. It can be understood that the first pressure plate swing body and the first main swing arm rotate along the virtual axis, thereby realizing the rotation of the first pressure plate and the first fixed plate relative to the base; and the first pressure plate and the first fixed plate can rotate relative to the base in parallel or at an angle to the base, presenting a flattened state or a folded state. The rotation mechanism provided in the present application has a first pressure plate and a first pressure plate swing arm fixedly connected, and the rotation angle and position of the pressure plate are determined by the first pressure plate swing arm. Moreover, when the first pressure plate and the first fixed plate rotate at the same time, they slide relative to each other to generate displacement, and the first guide rod and the first guide groove slide to realize the relative sliding guidance and limitation. The rotation position and angle of the first fixed plate are determined only by the first main swing arm. The overall components of the rotation mechanism are relatively few, the structure is simple, and the precision requirements are reduced.

[0011] In one embodiment, the first fixed plate and the first pressure plate rotate relative to the base, driving the first main swing arm and the first pressure plate swing arm to rotate relative to the base, and the first fixed plate slides relative to the first pressure plate along the width direction of the first pressure plate, and the rotation of the first pressure plate and the first fixed plate relative to the base can be in a flattened state or a folded state with the base. The rotating mechanism in this embodiment is used for a foldable electronic device with a display screen, which can realize the folding and unfolding of the electronic device, and achieve the performance of convenient portability and large-screen display. The first fixed plate is fixedly connected to the first shell of the electronic device and connected to the display screen. The first fixed plate drives the first pressure plate to rotate relative to the base, and then drives part of the display screen to rotate, so that the electronic device can be folded and unfolded. The rotating mechanism has a simple structure and reduces the internal space occupied by the electronic device.

[0012] In one embodiment, the first guide rod is a cylinder, the first guide groove includes a first limit end and a second limit end opposite to the first limit end, the groove side walls of the first guide groove located at the first limit end and the second limit end are arc-shaped, when the first pressure plate rotates, the first guide rod slides in the first guide groove, and when the first guide rod slides to the first limit end, the first pressure plate is flattened relative to the base, the first guide rod slides to the second limit end, and the first pressure plate is folded relative to the base.

[0013] In this embodiment, the first block includes a first surface and a second surface, the first surface and the second surface are located in the width direction of the first block and are arranged back to back, the first guide groove passes through the first surface and the second surface, and the length direction of the first guide groove is the same as the width direction of the first pressure plate; when the first fixed plate slides relative to the first pressure plate, the first guide rod slides in the first guide groove to realize the guidance and limitation of the first fixed plate relative to the first pressure plate, and at the same time, the first guide rod slides to the second limit end or the first limit end. Since the first guide rod is a cylinder with an arc-shaped outer peripheral surface, it can fit well with the arc-shaped groove side wall located at the first limit end and the second limit end, ensuring that the first guide rod slides into place, and then ensuring that the first fixed plate slides into place relative to the first pressure plate, ensuring the synchronization accuracy of the first fixed plate and the first pressure plate.

[0014] In one embodiment, the first main swing arm includes a first rotating body and a first main arm body, and the first rotating body is rotatably mounted in the base.

[0015] The first side surface and the second side surface are provided on the first main arm body. The first main arm body further includes a first main surface connecting the first side surface and the second side surface. The first main surface includes a first sub-surface and a second sub-surface, with a step formed between the first sub-surface and the second sub-surface. The first fixing plate is stacked on the first pressure plate, with the first sub-surface opposing the second surface and being slidable along the width of the second surface. The step is configured to engage the first pressure plate. The first main arm body is generally a quadrangular prism. The first main swing arm is secured to one end of the first fixing plate via the second side surface of the first main arm body. The first main surface and the first and second surfaces of the first pressure plate are not coplanar, while the first sub-surface opposes and contacts the second surface, enabling the first main swing arm to slide relative to the first pressure plate. The first plate surface of the first fixing plate at least partially contacts the second surface, enabling the first pressure plate to slide relative to the first fixing plate. When the first pressure plate is parallel to the base, i.e., in the extended state, the step engages one side of the first pressure plate (in the width direction of the first pressure plate), thereby jointly limiting the rotation angle of the first fixing plate and preventing the first fixing plate from causing the first pressure plate to rotate excessively and thereby damaging the rotation mechanism.

[0016] In one embodiment, the first sub-surface and the second sub-surface have a height difference in the thickness direction of the first main arm, the second sub-surface extends outward from one side of the first pressure plate and is inclined relative to the first sub-surface. When the rotation mechanism is folded, the second sub-surface forms an obtuse angle with the first surface of the first pressure plate, thereby cooperating with the first pressure plate to support the display screen.

[0017] In one embodiment, the first rotating body is arc-shaped, and a guide rib is provided on a 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;

[0018] The base includes a first rotational groove, which is an arc-shaped groove with a guide groove on its bottom surface, along which the guide rib rotates. In this embodiment, the first rotating element of the first main swing arm is arc-shaped, which can be understood as a virtual axis of rotation, achieving the rotational connection of the first fixed plate relative to the base. The guide rib slides within the guide groove to ensure the rotational accuracy of the first main swing arm, and thus the rotational accuracy of the first fixed plate.

[0019] In one embodiment, the rotating mechanism further includes a second pressure plate, a second pressure plate swing arm, a second fixed plate and a second main swing arm.

[0020] The second pressing plate includes a third surface and a fourth surface disposed opposite to the third surface, a second block is disposed on the fourth surface, and a second guide groove is disposed on the second block.

[0021] The second pressure plate swing arm is fixed to the fourth surface of the second pressure plate and is spaced apart from the second block;

[0022] The second main swing arm includes a third side surface and a fourth side surface disposed opposite to the third side surface, a second guide rod is protruded from the third side surface, and the second main swing arm is fixed to one end of the second fixing plate through the fourth side surface.

[0023] The second pressing plate is stacked on the second fixing plate, the fourth surface faces the second fixing plate, the second guide rod is installed in the second guide groove, and the second guide rod can slide in the second guide groove along the width direction of the second pressing plate.

[0024] The second pressure plate and the second fixed plate are located on one side of the base, the second pressure plate is opposite to the first pressure plate, and the second fixed plate is opposite to the first fixed plate; the base, the second pressure plate and the second fixed plate have the same length direction; the second main swing arm and the second pressure plate swing arm are rotatably mounted on the same side of the base.

[0025] 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.

[0026] The rotating mechanism is applied to a foldable electronic device, and the foldable electronic device includes a display screen. In this embodiment, the folding or unfolding of the foldable electronic device can be achieved 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 an unfolded 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, and the first pressing plate and the second pressing plate, the first fixed plate and the second fixed plate and the base are arranged in parallel to support the unfolded display screen. 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, the display screen is bent, and an escape space for accommodating the bent part of the display screen is formed between the first pressing plate and the second pressing plate.

[0027] The rotation mechanism provided by this application has a fixed connection between the pressure plate and the pressure plate swing arm, and a rotational connection between the pressure plate swing arm and the base. The main swing arm is fixed to the fixed plate, and the fixed plate and the pressure plate rotate simultaneously relative to the base through the virtual axis of the main swing arm and the pressure plate swing arm. Sliding occurs between the fixed plate and the pressure plate. The overall structure is simple, reducing precision requirements and simplifying the structure of the rotation mechanism. Only the main swing arm is used to determine the rotation position and angle of the fixed plate, and the pressure plate swing arm determines the angle and position of the pressure plate, reducing assembly difficulty. The rotation mechanism described in this application is applied to foldable electronic devices, simplifying the overall structure of the electronic device and reducing the overall weight.

[0028] 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 respectively extend out of the base and are located on opposite sides of the base.

[0029] 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;

[0030] 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 synchronous assembly of this embodiment uses synchronous gears to achieve physical shaft rotation. The rotation mechanism achieves bidirectional rotation of the rotation mechanism by cooperating with the first and second pressure plates with the first and second fixed plates, achieving a bending and flattening state. The first and second synchronous swing arms are provided to achieve a stable connection between the first and second fixed plates and the base. The first synchronous swing arm drives the second synchronous swing arm to rotate through the rotation of the first pressure plate and the first fixed plate, thereby achieving synchronous rotation of the second pressure plate and the second fixed plate, thereby ensuring the synchronous rotation accuracy of the rotation mechanism.

[0031] In one embodiment, the rotating mechanism includes a flattened state and a folded state. When the rotating mechanism is in the flattened state, the first fixing plate is stacked with the first pressing plate, and the first pressing plate is parallel to the base. The second fixing plate is stacked with the second pressing plate, and the second pressing plate is parallel to the base.

[0032] When the rotating mechanism is in a folded state, the first fixed plate and the first pressure plate are both at an angle to the base, and the second fixed plate and the second pressure plate are both at an angle to the base. The first pressure plate and the second pressure plate are opposite each other and form an escape space. The escape space provides space for the curved portion of the display screen to prevent the display screen from being squeezed and damaged when the rotating mechanism is folded. Furthermore, when the rotating mechanism is in an unfolded state, the first pressure plate and the second pressure plate support the flexible portion of the display screen. When the rotating mechanism is in a folded state, the first pressure plate and the second pressure plate are set at an angle, thereby reducing the thickness of the rotating mechanism and facilitating the thinness of foldable electronic devices.

[0033] In one embodiment, when the rotating mechanism is in a folded state, a 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 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. In this embodiment, after the first pressure plate and the second pressure plate form an escape space, the first fixed plate and the first pressure plate extend in the width direction, increasing the width dimension 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 dimension of the second pressure plate, thereby increasing the escape space dimension in the width direction of the rotating mechanism. This can be understood as increasing the support force at the connection between the bendable third part of the display screen and the first and second parts, thereby improving the safety of the bendable part of the display screen.

[0034] In one embodiment, the second main swing arm includes a second rotating body and a second main arm body, and the second rotating body is rotatably mounted in the base.

[0035] The third side surface and the fourth side surface are provided on the second main arm body, and the second main arm body also includes a third body surface connecting the third side surface and the third side surface, the third body surface includes a first sub-surface and a second sub-surface, a step is formed between the first sub-surface and the second sub-surface of the third body surface, the second fixed plate is stacked with the second pressure plate, the second sub-surface is opposite to the fourth surface and can slide along the width direction of the fourth surface, and the step is used to clamp with one side of the second pressure plate. The second main arm body is roughly a quadrangular prism, and the second main swing arm is fixed to one end of the second fixed plate through the fourth side surface of the second main arm body. The third body surface and the third surface and the fourth surface of the second pressure plate are not in the same plane, and the first sub-surface of the third body surface is opposite to and in contact with the fourth surface, thereby realizing the sliding of the second main swing arm relative to the second pressure plate, and the third plate surface of the second fixed plate is in at least partial contact with the second surface, thereby realizing the sliding of the second pressure plate and the second fixed plate. When the second pressure plate is parallel to the base, that is, in the unfolded state, the step is clamped to one side of the second pressure plate (in the width direction of the second pressure plate), and together with the second pressure plate, limits the rotation angle of the second fixed plate to prevent the second fixed plate from driving the second pressure plate to rotate too much and damaging the rotating mechanism.

[0036] In one embodiment, in the thickness direction of the second main arm, the first sub-surface and the second sub-surface of the third surface have a height difference, the second sub-surface of the third surface extends out of one side of the second pressure plate, and the second sub-surface of the third surface is inclined relative to the first sub-surface of the third surface;

[0037] The second sub-surface on the first main arm body forms an angle with the first surface of the first pressure plate, the second sub-surface on the second main arm body forms an angle with the third surface of the second pressure plate, and the second sub-surface on the first main arm body and the second sub-surface on the second main arm body are opposite to each other. In the folded state of the rotating mechanism, the first pressure plate and the second pressure plate are opposite to each other and form an avoidance space. In the width direction of the rotating mechanism, the second sub-surface on the first main arm body and the second sub-surface on the second main arm body are located in the extension direction of the avoidance space. The second sub-surface on the first main arm body and the second sub-surface on the second main arm body can push the third part of the display screen to the connection position with the second part and the first part. The third part of the display screen located in the avoidance space is in an arc angle, and then the bent part of the display screen forms a teardrop shape, which avoids damage to the display screen and improves its service life.

[0038] In one embodiment, the second rotating body is arc-shaped, and a guide rib is provided on a surface of the second rotating body facing away from the curved direction, and the length direction of the guide rib is the same as the length direction of the second rotating body;

[0039] The base includes a second rotating groove, which is an arc-shaped groove and a guide groove is provided on the bottom surface of the groove. The guide rib rotates along the guide groove.

[0040] In one embodiment, the base includes a bottom plate and a top plate, the top plate covering the bottom plate and forming a receiving space with the bottom plate, the base including a first rotation groove, a second rotation groove, a third rotation groove, and a fourth rotation groove, the first rotation groove and the second rotation groove being located on one side of the bottom plate, the third rotation groove and the fourth rotation groove being located on the other side of the bottom plate, the first rotation groove, the second rotation groove, the third rotation groove, and the fourth rotation groove being located within the receiving space, the first main swing arm and the first pressure plate swing arm being rotatably mounted in the first rotation groove and the third rotation groove, respectively, the two main swing arms and the second pressure plate swing arm being mounted in the second rotation groove and the fourth rotation groove. 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 being all located at the junction of the top plate and the bottom plate, and the first opening, the second opening, the third opening, and the fourth opening corresponding to and communicating with the first rotation groove, the second rotation groove, the third rotation groove, and the fourth rotation groove.

[0041] 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.

[0042] 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, a damping force is generated between the synchronous gear and the damping member, thereby improving the opening and closing feel of the rotation mechanism and enhancing the user experience.

[0043] In a second aspect, the present application provides a foldable electronic device, comprising a first shell, a second shell, a display screen and the rotating mechanism, wherein the rotating mechanism is connected between the first shell and the second shell, and the display screen is installed on the first shell, the second shell and the rotating mechanism. When the rotating mechanism rotates, the first shell and the second shell rotate relative to each other, thereby driving the display screen to bend or unfold.

[0044] Among them, when the foldable electronic device is in the unfolded state, the first shell and the second shell are relatively unfolded, and the rotating mechanism is in the unfolded state. When the foldable electronic device is in the folded state, the first shell and the second shell are relatively folded, and the rotating mechanism is in the folded state. The foldable electronic device provided in this embodiment adopts the above-mentioned rotating mechanism, which has a simple structure and low assembly precision, is easy to assemble, can reduce the weight of the whole machine, and save the internal space of the electronic device shell. When the foldable electronic device is in the unfolded state, the first shell, the second shell and the rotating mechanism jointly support the display screen, thereby ensuring the normal display of the display screen, while realizing large-screen display and improving the user experience.

[0045] In one embodiment, 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 pressure plate and the second pressure plate are arranged at an angle to form an avoidance space, and at least part of the third part is located in the avoidance space.

[0046] When the foldable electronic device is folded, the display screen bends within the clearance space, preventing the display from being squeezed. This prevents the third portion from bending at a large angle, preventing undesirable effects such as creases on the display screen and helping to extend the display's service life. Furthermore, when the third portion of the display screen bends, the first and second portions are positioned relative to each other. The display screen is located between the first and second housings, minimizing the exposed area, significantly reducing the likelihood of damage and effectively protecting the display screen.

[0047] In summary, the rotation mechanism provided by this application has a first pressure plate and a first pressure plate swing arm fixed to each other, and the first pressure plate swing arm is rotatably connected to the base, thereby fixing the first main swing arm to the first fixed plate. The first fixed plate and the first pressure plate rotate relative to the base via a virtual axis of the first main swing arm and the first pressure plate swing arm, and can slide relative to each other. This simplifies the structure of the rotation mechanism and reduces the precision of the fit. The rotation mechanism described in this application is applicable to foldable electronic devices. The folding or unfolding of the foldable electronic device can be achieved by rotating the rotation mechanism. Furthermore, the overall structure of the electronic device is simplified, reducing the overall weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] 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.

[0049] Figure 1is a schematic structural diagram of a foldable electronic device provided by an embodiment of the present application in a first state;

[0050] Figure 2 is a schematic structural diagram of a foldable electronic device provided by an embodiment of the present application in a second state;

[0051] Figure 3 yes Figure 2 A schematic diagram of the exploded structure of the foldable electronic device shown;

[0052] Figure 4 yes Figure 3 A schematic diagram of the structure of a rotating mechanism in a foldable electronic device is shown, wherein only a portion of the structure is shown;

[0053] Figure 5 yes Figure 3 A schematic structural diagram of the rotating mechanism in the foldable electronic device from another angle, wherein only a portion of the structure is shown;

[0054] Figure 6 yes Figure 4 Schematic diagram of the exploded structure of the rotating mechanism shown;

[0055] Figure 7 yes Figure 6 A schematic diagram of a portion of the structure of the pressure plate of the rotating mechanism shown;

[0056] Figure 8 yes Figure 6 A schematic structural diagram of a fixed plate in the rotating mechanism shown;

[0057] Figure 9 yes Figure 8 A schematic structural diagram of the first fixing plate shown;

[0058] Figure 10 yes Figure 6 A schematic structural diagram of a synchronization component in the rotating mechanism shown;

[0059] Figure 11 yes Figure 4 A schematic structural diagram of the rotating mechanism shown in the folded state;

[0060] Figure 12 yes Figure 4 A plan view of the rotating mechanism shown in the flattened state;

[0061] Figure 13 yes Figure 4 A schematic diagram of the state of the conversion process of the rotating mechanism between the flattened state and the folded state;

[0062] Figure 14 yes Figure 1The diagram shows the structure of the foldable electronic device from an end view in a folded state after the display screen and the rotating mechanism are assembled. DETAILED DESCRIPTION

[0063] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0064] The hinge mechanism of existing foldable electronic devices requires a large number of rotating swing arms and linkage structures to coordinate with each other, resulting in a complex structure that increases the difficulty of design and assembly. Furthermore, the bends of the flexible display are easily squeezed by the support members, causing creases on the flexible display and shortening its service life. The rotation mechanism provided in the embodiments of the present application only requires a pressure plate swing arm and a main swing arm to achieve folding of the pressure plate and fixed plate relative to the base. This structure is simple, requires low coordination precision, and can reduce the weight of the foldable electronic device. It also prevents squeezing of the bends of the flexible display, helping to extend the service life of the display.

[0065] 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.

[0066] 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 2 The 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.

[0067] 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 of the foldable electronic device 1000 shown as 180 degrees means that the unfolding angle 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.

[0068] 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.

[0069] 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.

[0070] See also Figure 3 , Figure 3 yes Figure 2 Schematic diagram of the exploded structure of the foldable electronic device shown.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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 remain at any angle, such as a 90-degree angle between the first shell 210 and the second shell 220, or 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 via the rotating mechanism 100 and move away from each other, and 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 flat. 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.

[0077] 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.

[0078] 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 first housing 210 and the second housing 220 are relatively close to each other and stacked, and the display screen 300 is folded and accommodated 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, which can greatly reduce the probability of damage to the display screen 300. The overall size is reduced, making it easier to carry.

[0079] See also Figure 4 、 Figure 5 as well as Figure 6 , Figure 4 yes Figure 3 A schematic diagram of the structure of a rotating mechanism in a foldable electronic device is shown, wherein only a portion of the structure is shown; Figure 5 yes Figure 3 A schematic structural diagram of the rotating mechanism in the foldable electronic device from another angle, wherein only a portion of the structure is shown; Figure 6 yes Figure 4 Schematic diagram of the exploded structure of the rotating mechanism shown.

[0080] like Figure 6The rotating mechanism 100 includes a base 10, a pressure plate 20, a fixed plate 30, a linkage 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 rotatably 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 is rotatably 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 connected to the fixed plate 30 to achieve the connection between the base 10 and the shell. The pressure plate 20 and the fixed plate 30 are slidably connected through the linkage portion 40. The pressure plate 20 and the fixed plate 30 are synchronized by the pressure plate swing arm and the main swing arm. 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 arranged opposite to the third portion 330 of the display screen 300. After the rotating mechanism 100 is assembled with the first shell, the second shell and the display screen, the pressing plate 20 is used to support the display screen 300 together with the base 10 when the display screen is flattened. When the first shell 210 and the second shell 220 drive the display screen 300 to bend, the pressing plate 20, part of the fixing plate 30 and the base 10 form an escape space to accommodate the third part 330 of the display screen 300. The pressing plate 20 and the fixing plate 30 can also support the third part 330 in a bent state, thereby protecting the third part 330.

[0081] In this embodiment, the linkage part 40 includes a guide rod and a guide groove. The guide groove is fixed on the pressure plate 20. The guide rod is provided on the main swing arm 50. The main swing arm 50 is fixed on the fixed plate 30. The guide rod is installed in the guide groove and can slide in the guide groove to achieve a sliding connection between the pressure plate 20 and the fixed plate 30. The guide rod of this embodiment is a columnar rod body, specifically a cylindrical rod body. Of course, it can also be a rod body with a rectangular or prismatic cross-section. The guide groove is a strip-shaped groove to enable the arc-shaped guide rod to slide along the length direction of the guide groove. The position and connection relationship of the guide rod and the guide groove with the pressure plate 20, the main swing arm 50 and the fixed plate 30 will be described in detail later when introducing the pressure plate 20 and the fixed plate 30.

[0082] 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 linkage 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.

[0083] 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 linkage part 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 the above-mentioned substructures. One set of the above-mentioned 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 linkage part 40, the main swing arm 50, the synchronization assembly 60, and the pressure plate swing arm 70, and the other end of the base 10 is also provided with the pressure plate 20, the fixed plate 30, the linkage part 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 the above-mentioned 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 connected between the two sets of substructures between the two ends of the base 10. It should be noted that, in the other substructures located between the two ends of the base 10 , the linkage portion 40 may be omitted according to actual conditions.

[0084] 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 linkage portion 40a includes a first linkage portion 40a and a second linkage 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 linkage portion 40a includes a first guide rod 42 and a first guide groove 41, and the second linkage portion 40b includes a second guide rod 44 and a second guide groove 43.

[0085] In the following specific embodiments, only one substructure is shown in the main figures. The description will focus on the pressure plate 20, fixed plate 30, linkage unit 40, main swing arm 50, synchronization assembly 60, and pressure plate swing arm 70 in one substructure. The other substructures are identical in structure to, or symmetrically identical to, the pressure plate 20, fixed plate 30, linkage unit 40, main swing arm 50, synchronization assembly 60, and pressure plate swing arm 70 in this substructure.

[0086] Continue reading Figure 6The 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 the 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.

[0087] 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.

[0088] 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 a fourth opening 128, a fifth opening 129, and a sixth opening (not shown) corresponding to the third and fourth rotation grooves and the synchronous swing arm 68. The fourth opening 128 communicates with the third rotation groove, the fifth opening 129 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 opening 128 and the fifth opening 129 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 aforementioned openings and rotation grooves on both sides of the base of this embodiment are symmetrical about the first reference plane P.

[0089] It should be noted that the opening and the rotation groove on the base for matching with the main swing arm 50, the synchronization component 60 and the pressure plate swing arm 70 are set according to the actual number and position of the substructure, that is, according to the number and position of the main swing arm 50, the synchronization component 60 and the pressure plate swing arm 70.

[0090] See also Figure 6 and Figure 7 , Figure 7 Yes Figure 6 A schematic diagram of a portion of the structure of the pressure plate of the rotating mechanism shown;

[0091] 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 deviation can 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 plates 20 about the second reference plane O and will not be described again.

[0092] The first pressure plate 21 is a strip-shaped plate, and the first pressure plate swing arm 71 and the first guide groove 41 are provided on the first pressure plate 21. In fact, the first pressure plate swing arm 71 and the first guide groove 41 can be understood as part of the structure of the first pressure plate 21. Specifically, the first pressure plate 21 includes a first surface 211 and a second surface 212, a first end (not labeled in the figure) and a second end (not labeled in the figure). The first surface 211 and the second surface 212 are arranged in back-to-back relationship, and the first surface 211 and the second surface 212 are both perpendicular to the Z direction. The first end (not labeled in the figure) and the second end are opposite to each other and are both connected to the first surface 211 and the second surface 212.

[0093] A first strip-shaped block 215 is protruded from the second surface 212 of the first pressing plate 21. The first block 215 is located on the second surface 212 near the first end. The length of the first block 215 is aligned with the width of the first pressing plate 21. The first block 215 includes a first surface 2151 and a second surface 2152 opposite the first surface. The first surface 2151 and the second surface 2152 are located along the width of the first block 215.

[0094] The first guide groove 41 is opened in the first block 215 and passes through the first surface 2151 and the second surface 2152. Specifically, the first guide groove 41 is a long strip through groove, which includes a first limiting end 411 and a second limiting end 412. The first limiting end 411 and the second limiting end 412 are located at opposite ends of the length direction of the first guide groove 41. The length direction of the first guide groove 41 is the width direction of the first pressure plate 21, and the two open ends of the first guide groove 41 are respectively facing the opposite ends of the length direction of the first pressure plate 21. In this embodiment, the groove side walls of the first guide groove 41 located at the first limiting end 411 and the second limiting end 412 are arc-shaped, which are used to cooperate with the first guide rod 42. The outer peripheral surface of the first guide rod 42 is in full contact with the arc-shaped groove side walls to ensure that the first guide rod 42 slides into place in the first guide groove 41 (the first pressure plate 21 and the first fixing plate 31 slide into place), and the degree of wear of the first guide rod 42 and the first guide groove 41 can be reduced. See also Figure 5 The first guide rod 42 slides to the first limit end 411, the first pressure plate 21 is flattened relative to the base 10, the first guide rod 42 slides to the second limit end 412, and the first pressure plate 21 is folded relative to the base 10.

[0095] The second pressure plate 22 is a strip-shaped plate. The second pressure plate swing arm 72 and the second guide slot 43 are disposed on the second pressure plate 22. In practice, the second pressure plate swing arm 72 and the second guide slot 43 can be understood as being part of the structure of the second pressure plate 22. Specifically, the second pressure plate 22 includes a third surface 221, a fourth surface 222, and a third end (not shown) and a fourth end. The third surface 221 and the fourth surface 222 are disposed in opposite directions and are both perpendicular to the Z direction. The third end and the fourth end are disposed opposite each other and are both connected to the third surface 221 and the fourth surface 222.

[0096] See also Figure 4 and Figure 6 A second strip-shaped block 225 is protruding from the fourth surface 222 of the second pressing plate 22. The second block 225 is located on the fourth surface 222 near the third end. The length of the second block 225 is aligned with the width of the second pressing plate 22. The second block 225 includes a third surface 2251 and a fourth surface 2252 disposed opposite to the third surface 2251. The third surface 2251 and the fourth surface 2252 are located in the width direction of the second block 225.

[0097] The second guide groove 43 is formed in the second block 225 and passes through the third surface 2251 and the fourth surface 2252. Specifically, the second guide groove 43 is an elongated through groove, which includes a third limiting end 431 and a fourth limiting end 432. The third limiting end 431 and the fourth limiting end 432 are located at opposite ends of the length direction of the second guide groove 43 (the width direction of the first pressure plate 21). In this embodiment, the groove sidewalls of the second guide groove 43 located at the third limiting end 431 and the fourth limiting end 432 are arc-shaped, which are used to cooperate with the cylindrical second guide rod 44. The outer peripheral surface of the second guide rod 44 is in full contact with the arc-shaped groove sidewalls to ensure that the second guide rod 44 slides into place in the second guide groove 43 (the second pressure plate 22 and the second fixing plate 32 slide into place), and the degree of wear between the second guide rod 44 and the second guide groove 43 can be reduced.

[0098] 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 have the same structure and are located on opposite sides of the base 10 in the X direction. The first pressure plate swing arm 71 and the second pressure plate swing arm 72 are symmetrical about the first reference plane P.

[0099] The first pressure plate swing arm 71 includes a first connecting plate 711 and a first pressure plate swinging body 712. The first connecting plate 711 is a rectangular plate, and the first pressure plate swinging body 712 is an arc-shaped plate. The first pressure plate swinging body 712 is connected to one end of the first connecting plate 711 in the longitudinal direction. In fact, the first connecting plate 711 and the first pressure plate swinging body 712 form an integral plate structure. In this embodiment, the first connecting plate 711 is fixed to the second surface 212 of the first pressure plate 21 and is spaced apart from the first block 215; the first pressure plate swinging body 712 extends out from one side in the width direction of the first pressure plate 21 and the arc-shaped bending direction is toward the first pressure plate 21. The first pressure plate swinging body 712 and the first block 215 are respectively close to opposite sides of the first pressure plate 21.

[0100] Specifically, in one embodiment, the first connecting plate 711 is integrally formed with the first pressing plate 21, and the first connecting plate 711 can be understood as a bump protruding from the second surface 212 of the first pressing plate 21. In another embodiment, a groove is formed on the second surface 212 of the first pressing plate 21, and the first connecting plate 711 is assembled into the groove and fixed.

[0101] See Figure 11The first pressure plate swing member 712 passes through the second opening 126 and is installed in the second rotation groove. It slides along the second rotation groove, thereby enabling the first pressure plate swing arm 71 to rotate relative to the second rotation groove (base 10). When the first pressure plate 21 rotates, it drives the first pressure plate swing member 712 to rotate relative to the base 10, thereby enabling the first pressure plate 21 and the first pressure plate swing arm 71 to rotate relative to the base 10. In this embodiment, the rotation angle and position of the first pressure plate 21 are determined by the first pressure plate swing arm 71, resulting in a relatively simple structure and matching relationship, reducing precision requirements.

[0102] 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. In fact, the second connecting plate 721 and the second pressure plate swing body 722 are integrally formed into a plate structure. The second pressure plate swing body 722 is connected to one end of the second connecting plate 721 in the longitudinal direction. In this embodiment, the second connecting plate 721 is fixed on the second pressure plate 22 and is spaced apart from the second block 225. The arc-shaped bending direction of the second pressure plate swing body 722 is toward the second pressure plate 22. The second pressure plate swing body 722 extends out from one side of the second pressure plate 22 in the width direction and is arranged opposite to the first pressure plate swing arm 712. The second pressure plate swing body 722 and the second block 225 are respectively close to the opposite sides of the second pressure plate 22.

[0103] Specifically, in one embodiment, the second connecting plate 721 is integrally formed with the second pressing plate 22, and the second connecting plate 721 can be understood as a protrusion protruding from the fourth surface 222 of the second pressing plate 22. In another embodiment, a groove is formed on the fourth surface 222 of the second pressing plate 22, and the second connecting plate 721 is assembled into the groove and fixed.

[0104] See Figure 6 and Figure 11 The second pressure plate swing member 722 passes through the fifth opening 129 and is installed in the fourth rotation groove. It slides along the fourth rotation groove, thereby enabling the second pressure plate swing arm 72 to rotate relative to the fourth rotation groove (base 10). When the second pressure plate 22 rotates, it drives the second pressure plate swing member 722 to rotate relative to the base 10, thereby enabling the second pressure plate 22 and the second pressure plate swing arm 72 to rotate relative to the base 10. In this embodiment, the rotation angle and position of the second pressure plate 222 are determined by the second pressure plate swing arm 72, resulting in a relatively simple structure and matching relationship, reducing precision requirements.

[0105] See also Figure 8 , Figure 8 yes Figure 6 A schematic structural diagram of the fixed plate in the rotating mechanism 100 is shown.

[0106] 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 depicts 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.

[0107] It should be noted that, please refer to Figure 3 Taking the fixed plate 30 as an example, the fixed plate 30 is symmetrical with respect to the second reference plane O and the first reference plane P described above and below. The fixed plate 30 is located at the other end of the base 10 and is symmetrical with respect to the second reference plane O, including a third fixed plate and a fourth fixed plate. The third and fourth fixed plates are symmetrical with respect to the first reference plane P. The third and fourth fixed plates 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 including the third and fourth fixed plates is symmetrical with respect to the fixed plate 30 including the first and second fixed plates with respect to 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.

[0108] Please also refer to Figure 9 , Figure 9 yes Figure 8The first fixing plate 31 is a strip-shaped plate with a thickness. The first fixing plate 31 includes a first sub-plate 311 and a first synchronization slot 312. The first main swing arm 51 is disposed on the first sub-plate 311 and may be integrally formed with the first sub-plate 311. The first guide rod 42 is disposed on the first main swing arm 51. 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 connect the first plate surface 3111 and the second plate surface 3112, respectively. 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.

[0109] The first synchronization groove 312 extends through the first side 3115 and the second side 3116 of 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 coupled to the first synchronization swing arm 68a. In this embodiment, the thickness of the first sub-plate 311 where the first synchronization groove 312 is provided is greater than that of other locations, thereby ensuring the strength of the first synchronization groove 312 and the first sub-plate 311.

[0110] The first main swing arm 51 is connected to the first end surface 3113 of the first fixing plate 31 and is spaced apart from the first synchronous sliding groove 312 .

[0111] The second fixed plate 32 is a strip-shaped plate structure with a thickness. The second fixed plate 32 includes a second sub-plate 321 and a second synchronous slide 322. The second main swing arm 52 is provided on the second sub-plate 321 and can actually be formed integrally with 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 arranged in a back-to-back relationship. The second sub-plate 321 also includes a third side 3215 and a fourth side 3216, which are arranged in a back-to-back relationship and respectively connect the third plate surface 3211 and the fourth plate surface 3212; 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.

[0112] The second synchronization groove 322 extends through the third side 3215 and the fourth side 3216 of the second sub-plate 321 in the widthwise (X-axis) direction of the second sub-plate 321. The second synchronization groove 322 is configured to be slidably coupled to the second synchronization swing arm 68b. In this embodiment, the thickness of the second sub-plate 321 where the second synchronization groove 322 and the second guide groove 43 are located is greater than that at other locations, thereby ensuring the strength of the second synchronization groove 322 and the second sub-plate 321.

[0113] The second main swing arm 52 is connected to the second end surface 3213 of the second fixing plate 32 and is spaced apart from the second synchronous sliding groove 322 .

[0114] In this embodiment, the first main swing arm 51 and the second main swing arm 52 have the same structure and are located on opposite sides of the fixed base 10 in the X direction. The first main swing arm 51 and the second main swing arm 52 are arranged side by side along the X direction and are symmetrical with respect to the first reference plane P.

[0115] like Figure 8 and Figure 9 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 an arc-shaped plate-like structure, and the structure of the first rotating body 511 matches the structure of the first rotating groove on the base 10. In one embodiment, a guide rib 513 is convexly 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 matches the guide rib 513 is provided with a guide groove, and the bottom surface of the groove is arc-shaped and matches 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.

[0116] The first main arm body 512 includes a first side surface 5121 and a second side surface 5122 disposed opposite to the first side surface 5121, as well as a first main surface 5123 and a second main surface 5124. The first side surface 5121, the first main surface 5123, the second side surface 5122, and the second main surface 5124 are sequentially connected to form the outer periphery of the first main arm body 512. Specifically, the first side surface 5121 is parallel to the second side surface 5122, and the first main surface 5123 and the second main surface 5124 are disposed opposite to each other. The first main surface 5123 is a stepped surface, including a first sub-surface 5123a and a second sub-surface 5123b with a step formed therebetween. The second sub-surface 5123b is inclined relative to the first sub-surface 5123a and is higher than the first sub-surface 5123a (there is a height difference between the first sub-surface 5123a and the second sub-surface 5123b in the thickness direction of the first main arm body 512). The first rotating body 511 is bent in a direction such that the first body surface 5123 extends toward the first body surface 5123 .

[0117] One end of the first main arm 512 is fixedly connected to one end of the first rotating body 511 . In fact, the first main arm 512 and the first rotating body 511 are integrally formed. In this embodiment, the first side surface 5121 of the first main arm body 512 is opposite to and fits with the first end surface 3113 of the first fixing plate 31, thereby fixing the first main swing arm 51 to the first fixing plate 31; the first body surface 5123 and the first plate surface 3111 of the first fixing plate 31 face the same side (the same side here refers to the same general direction, and the directions of the first body surface 5123 and the first plate surface 3111 have an angle difference) and their extension directions intersect (the extension direction of the surface), which can be understood as the first body surface 5123 and the first plate surface 3111 of the first fixing plate 31 are not coplanar, the second body surface 5124 and the second plate surface 3112 face the same side (the same side here refers to the same general direction, and the directions of the second body surface 5124 and the second plate surface 3112 have an angle difference) and their extension directions intersect, which can be understood as the second body surface 5124 and the second plate surface 3112 are different surfaces. The first guide rod 42 is protruded from the second side surface 5122 , and the axial direction of the first guide rod 42 is perpendicular to the second side surface 5122 .

[0118] The first rotating member 511 of the first main swing arm 51 extends from the first opening 125 into the base 10. The first rotating member 511 is received in the first rotation groove and can slide along the first rotation groove to achieve rotation of the first main swing arm 51. The rotation direction is the direction of the arc of the first rotating member 511, that is, it rotates in the direction of rotation of the fixed plate. The center of the arc of the first rotating member 511 can be understood as a point on the virtual axis of rotation of the first rotating member 511.

[0119] 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. In one embodiment, the surface of the second rotating body 521 facing away from the bending direction is provided with a guide rib, and the length direction of the guide rib is the same as the length direction of the second rotating body 521. The bottom surface of the second rotating groove that matches the guide rib is provided with a guide groove, and the bottom surface of the groove is arc-shaped and matches 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.

[0120] The second main arm body 522 is a quadrangular prism, comprising a third side surface 5221, a fourth side surface 5222 facing away from the third side surface 5221, and a third surface 5223 and a fourth surface 5224. The third side surface 5221, the third surface 5223, the fourth side surface 5222, and the fourth surface 5224 are sequentially connected to form the outer perimeter of the second main arm body 522. Specifically, the third side surface 5221 and the fourth side surface 5222 are parallel, and the third surface 5223 and the fourth surface 5224 face away from each other. The third surface 5223 is a stepped surface, comprising a first sub-surface 5223a and a second sub-surface 5223b, forming a step. The second sub-surface is inclined at an angle relative to the first sub-surface 5223a. The second rotating body 521 curves in a direction similar to that of the third surface 5223.

[0121] One end of the second main arm 522 is fixedly connected to one end of the second rotating body 521. In fact, the second main arm 522 and the second rotating body 521 are integrally formed. In this embodiment, the third side surface 5221 of the second main arm 522 is opposite and abuts against the second end surface 3213 of the second fixing plate 32, thereby fixedly connecting the second main swing arm 52 to the second fixing plate 32. The third body surface 5223 and the third plate surface 3211 face the same side (herein, the same side means generally the same direction, and the third body surface 5223 and the third plate surface 3211 have an angular difference in orientation) and extend in an intersecting direction (the direction of extension of the surface). The fourth body surface 5224 and the fourth plate surface 3212 face the same side (herein, the same side means generally the same direction, and the fourth body surface 5224 and the fourth plate surface 3212 have an angular difference in orientation) and extend in an intersecting direction (the direction of extension of the surface). The axial direction of the second guide rod 44 is perpendicular to the fourth side surface 5222.

[0122] The second rotating body 521 of the second main swing arm 52 extends into the base 10 from the fourth opening 128 . The second rotating body 521 is accommodated in the rotating groove and can rotate along the third rotating groove to realize the rotation of the second main swing arm 52 along with the second fixed plate 32 .

[0123] See also Figure 10 , Figure 10 yes Figure 6 A schematic diagram of the partial structure of the synchronization assembly of the rotating mechanism shown. 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 synchronization gear 65 is mounted within 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. The first synchronization swing arm 68a and the second synchronization swing arm 68b are symmetrical about the first reference plane P and have identical structures. The first synchronization swing arm 68a is located between the first main swing arm 51 and the first pressure plate swing arm 71, and the second synchronization swing arm 68b is located between the second main swing arm 52 and the second pressure plate swing arm 72. The synchronization 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 synchronization swing arm 68a is fixedly connected to the first gear 651, and one end of the second synchronization swing arm 68b is fixedly connected to the second gear 652.

[0124] The first synchronous swing arm 68 a is slidably mounted in the first synchronous sliding groove 312 of the first fixed plate 31 , and the second synchronous swing arm 68 b is slidably mounted in the second synchronous sliding groove 322 , thereby slidably connecting the synchronous assembly 60 to the fixed plate 30 .

[0125] The synchronization assembly 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 synchronization gear 65, and the synchronization gear 65 can rotate relative to the damping member 66. When the synchronization gear 65 rotates, a damping force is generated between the synchronization gear 65 and the damping member 66, thereby improving the opening and closing feel of the rotation mechanism 100 and enhancing the user experience.

[0126] See also Figure 11 Figure 12 and Figure 13 , Figure 11 yes Figure 4 A schematic structural diagram of the rotating mechanism shown in the folded state; Figure 12yes Figure 4 A plan view of the rotating mechanism shown in the flattened state; Figure 13 yes Figure 4 Schematic diagram of the conversion process of the rotating mechanism between the flattened state and the folded state.

[0127] The first pressure plate 21 and the first fixed plate 31 are stacked (in the width direction of the first pressure plate 21, the first pressure plate 21 and the first fixed plate 31 are partially stacked), the first main swing arm 51 and the first fixed plate 31 are installed on the first pressure plate 21, the length direction of the first fixed plate 31 is parallel to the length direction of the first pressure plate 21, the first plate surface 3111 of the first sub-plate 311 is opposite to and contacts the second surface 211 of the first pressure plate 21 and slides, the first guide rod 42 is inserted into the first guide groove 41 and can slide in the first guide groove 41; the first sub-surface 5123a of the first body surface 5123 of the first main arm body 512 is opposite to and contacts the second surface 211, and the first sub-surface 5123a and the second surface 211 can slide along the width direction of the first pressure plate 21; the first rotating body 511 extends out from one side of the first pressure plate 21 and is spaced apart from the first pressure plate swing arm 71.

[0128] The first rotating body 511 of the first main swing arm 51 extends from the first opening 125 into the first rotating groove in the base 10. The first main swing arm 51, the first pressure plate swing arm 71, and the cooperation between the first guide rod 42 and the first guide groove 41 connect and limit the first pressure plate 21, the first fixed plate 31, and the base 10. Simultaneously, the first fixed plate 31 drives the first pressure plate 21 to rotate relative to the base 10. The first guide rod 42 slides within the first guide groove 41, guiding the sliding movement of the first pressure plate 21 relative to the first fixed plate 31. When the first fixed plate 31 rotates, the first guide rod 42 rotates in the first guide groove 41.

[0129] Similarly, 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 second pressure plate 22 and the second fixed plate 32 are parallel in the length direction, the third surface 221 of the second pressure plate 22 and the fourth plate surface 3212 of the second fixed plate 32 are opposite and contact and slide, the second guide rod 44 is inserted into the second guide groove 43, and the second guide rod 44 can slide in the second guide groove 43. When the second fixed plate 32 rotates, the second guide rod 44 can rotate in the second guide groove 43. The first sub-surface of the third body surface 5223 of the second main arm body 522 is opposite to the fourth surface 222 and can slide along the fourth surface 222. The second rotating body 521 extends out from one side of the second pressure plate 22 and is spaced apart from the second pressure plate swing arm 72.

[0130] The relative sliding between the fixed plate 30 and the pressure plate 20 and the rotation relative to the base 10 are guided by the linkage part 40, thereby ensuring the rotation accuracy between the fixed plate 30 and the pressure plate 20, eliminating the need for additional auxiliary swing arms, and simplifying the structure and weight of the rotating mechanism.

[0131] In this embodiment, when the rotating mechanism 100 is in the folded state, a displacement occurs between the first fixed plate 31 and the first pressure plate 21 (in the width direction of the first pressure plate), and the first fixed plate 31 and the first pressure plate 21 extend in the width direction (X-axis direction). Specifically, the first fixed plate 31 and the first pressure plate 21 move relative to each other in the width direction and become offset, thereby increasing the overall length of the first fixed plate 31 and the first pressure plate 21 in the width direction (which can be understood as increasing the width dimension of the first pressure plate). The second fixed plate 32 and the second pressure plate 22 move and the second fixed plate 32 and the second pressure plate 22 extend in the width direction of the second pressure plate 22. Specifically, the second fixed plate 32 and the second pressure plate 22 move relative to each other in the width direction and become offset, thereby increasing the overall length of the second fixed plate 32 and the second pressure plate 22 in the width direction (which can be understood as increasing the width dimension of the second pressure plate). In this way, the first pressing plate 21 and the second pressing plate 22 are arranged at an angle relative to the base 10 to form an escape space, the first surface 211 and the third surface 221 face the escape space, and part of the first fixing plate 31 and part of the second fixing plate 32 increase the volume of the escape space in the direction perpendicular to the base, that is, the volume of the escape space in the Y-axis direction is increased, which can accommodate the third part of the display screen 300 with a larger area, thereby improving the safety of the bent part of the display screen.

[0132] It should be noted that the first pressure plate 21 is slidably connected to the first fixed plate 31 through the first guide rod 42 and the first guide groove 41, 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 synchronization gear 65 of the synchronization assembly 60 is fixed in the base 10, and the first synchronization swing arm 68a is slidably connected to the first synchronization groove 312 of the first fixed plate 31 (it can slide relative to each other but will not fall off from the first synchronization groove 312). Therefore, the first fixed plate 31, the first pressure plate 21 and the base 10 are rotated and slidably connected, and are limited to each other. The first fixed plate 31 and the first pressure plate 21 slide with each other, and the first fixed plate 31 is fixedly connected to the display screen 300 and the first shell 210 (fixed by glue). Similarly, the second pressure plate 22 is slidably connected to the second fixed plate 32 via the second guide rod 44 and the second guide groove 43. 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 synchronization 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 (they can slide relative to each other but will not fall out of the second synchronization slot 322). Therefore, the second fixed plate 32, the second pressure plate 22, and the base 10 rotate and are slidably connected. The second fixed plate 32 and the second pressure plate 22 slide relative to each other, and the second fixed plate 32 is fixedly connected to the display screen 300 and the second shell 220 (fixed by glue), thereby achieving 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, the synchronization swing arm is not required. In this way, the rotation mechanism can also drive the first shell or the second shell to rotate (that is, unilateral rotation), and the purpose of folding the display screen can also be achieved.

[0133] Please also refer to Figure 14 , Figure 14 yes Figure 1 The diagram shows the structure of the foldable electronic device from an end view in a folded state after the display screen and the rotating mechanism are assembled.

[0134] The first fixing plate 31 and the second fixing plate 32 are fixed to the display screen 300 by adhesive bonding. The first fixing plate 31 rotates relative to the base 10 under the action of an external force (the first housing 210 ). When the first fixing plate 31 is rotated clockwise by ω1, the first fixing plate 31 drives the first main swing arm 51 to rotate clockwise by ω1, and the first rotating body 511 rotates in the first rotating groove toward away from the base 10, and the first main arm body 512 slides along the second surface 212 of the first pressure plate 21 in the width direction of the second surface 212, driving the first guide rod 42 to slide in the first guide groove 41, and the first synchronous swing arm 68a rotates 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 swinging 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 with the first fixed plate 31 relative to the base 10, and the first pressure plate 21 and the first fixed plate 31 slide in the width direction of the first pressure plate 21 and produce a certain displacement, and the first guide rod 42 slides to the second limit end 412 in the first guide groove 41. 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, and the second fixed plate 32 drives the second main swing arm 52 to rotate counterclockwise ω2, and the second rotating body 521 rotates in the fourth rotating groove in the direction away from the base 10, and the second synchronous swing arm 68b rotates 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 fifth rotating groove in the direction away from the base 10, thereby driving the second pressure plate 22 to rotate with the second fixed plate 32 while sliding relative to the second fixed plate 32 and generating a certain displacement; the second guide rod 44 slides in the second guide groove 43 to the fourth limit end 432. At this time, the rotating mechanism 100 is in a folded state (such as Figure 11 As shown), the first pressure plate 21 and the second pressure plate 22 are arranged at an angle to each other, and an avoidance space is formed to accommodate the third part of the display screen 300. At this time, the first guide rod 42 is located at the second limit end 412, and the second guide rod 44 is located at the fourth limit end 432. It should be noted that a position limiting structure can be provided in the base to limit the positioning angles of the first main swing arm, the second main swing arm and the first pressure plate swing arm and the second pressure plate swing arm, such as a folded state or a flattened state. The position limiting structure can be a cam structure, a damping structure, or it can cooperate with a synchronization component, as long as the rotation mechanism can be positioned at a certain angle.

[0135] The second sub-surface 5123b of the first main arm body 512 faces the avoidance space and is set at an angle to the first pressure plate 21; the second sub-surface 5223b on the second main swing arm 52 faces the avoidance space and is set at an angle to the second pressure plate 22. The second sub-surface 5123b and the second sub-surface 5223b are set opposite to each other and will push the third part of the display screen 300 to form an R angle (water drop shape), so as not to excessively bend the display screen, thereby achieving the effect of protecting the display screen.

[0136] Participate together Figure 13 , rotate the first fixed plate 31 counterclockwise, the first fixed plate 31 drives the first main swing arm 51 to rotate counterclockwise ω2, 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 toward the base 10 in the second rotating groove, thereby driving the first pressure plate 21 to rotate with the first fixed plate 31, and the first guide rod 42 slides counterclockwise ω2 in the first guide groove 41, thereby realizing synchronous rotation and sliding between the first pressure plate 21 and the first fixed plate 31, and the first pressure plate and the first fixed plate 31 are stacked again.

[0137] 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 slide groove 322, thereby driving the second fixed plate 32 to rotate clockwise ω1, and the second fixed plate 32 drives the second main swing arm 52 to rotate clockwise ω1, and the second rotating body 521 rotates toward the base 10 in the fourth rotating groove; at the same time, the second pressure plate swing body 722 of the second pressure plate swing arm 72 rotates toward the base 10 in the fifth rotating groove, thereby driving the second pressure plate 22 to rotate with the second fixed plate 32, and the second guide rod 44 slides clockwise ω1 in the second guide groove 43, thereby realizing synchronous sliding and rotation between the second pressure plate 22 and the second fixed plate 32.

[0138] At this time, the rotating mechanism 100 is flattened (eg Figure 12 As shown, the first pressing plate 21 and the second pressing plate 22 are connected to each other and are parallel to the base 10, forming a support surface for supporting the third portion of the display screen 300. The first guide rod 42 is located at the first limiting end 411 of the first guide groove 41, and the second guide rod 44 is located at the third limiting end 431 of the second guide groove 43.

[0139] When the electronic device is folded, the first shell 210 and the second shell 220 rotate relative to each other, driving the first fixed plate 31 and the second fixed plate 32 of the rotating mechanism 100 to rotate until the rotating mechanism 100 is in a folded state, the first shell 210 and the second shell 220 overlap, and the third part 330 of the display screen 300 is located on the inner side of the rotating mechanism 100, and the first part 310 and the second part 320 are partially or completely in contact with each other. Part of the third part 330 is located between the first pressure plate 21, the first and second pressure plates 22 and the second fixed plate, and part of the third part 330 (the position 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 part 330 is bent, so that the third part 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.

[0140] When the electronic device is unfolded from its folded state, the first housing 210 is pushed away from the second housing 220, causing the first portion 310 and the second portion 320 of the display screen 300 to move away from each other, and the third portion 330 to unfold. Simultaneously, the first housing 210 applies an external force to the first fixing plate 31 of the rotation mechanism 100, causing the rotation mechanism to unfold until the first fixing plate 31 and the second fixing plate 32 are both 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 point, the electronic device is completely flattened, and the display surface 340 of the display screen 300 can be operated, achieving large-screen operation performance.

[0141] In the rotating mechanism 100 described in the present application, the fixed plate 30 and the pressure plate 20 are slidably connected, and the angle and direction of rotation of the pressure plate are limited by the pressure plate swing arm. The rotation of the fixed plate 30 and the pressure plate 20 relative to the base is achieved by the main swing arm 50 and the pressure plate swing arm 70. Moreover, only the main swing arm 50 is required to determine the angle and position of the fixed plate 30, and then it is guided by the linkage part 40 between the pressure plate 20 and the fixed plate 30. The overall rotating mechanism 100 has a simple structure, which reduces the requirements for fitting accuracy and assembly accuracy.

[0142] 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, The first pressing plate includes a first surface and a second surface disposed opposite to the first surface, a first block is disposed on the second surface, and a first guide groove is disposed on the first block. The first pressure plate swing arm is fixed to the second surface of the first pressure plate and is spaced apart from the first block; The first main swing arm includes a first side surface and a second side surface arranged opposite to the first side surface, a first guide rod is protruded from the first side surface, the first main swing arm is fixed to one end of the first fixing plate through the second side surface, the first main swing arm also includes a first rotating body, a first main arm body and a first body surface connecting the first side surface and the second side surface, the first side surface and the second side surface are arranged on the first main arm body, the first body surface includes a first sub-surface and a second sub-surface, and a step is formed between the first sub-surface and the second sub-surface. The first pressing plate is stacked on the first fixing plate, the second surface faces the first fixing plate, the first guide rod is installed in the first guide groove, and the first guide rod can slide in the first guide groove along the width direction of the first pressing plate, The first pressure plate and the first fixed plate are located on one side of the base, and the base, the first pressure plate and the first fixed plate have the same length direction; the first main swing arm and the first pressure plate swing arm are rotatably mounted on the same side of the base and are spaced apart, wherein the first rotating body is rotatably mounted in the base, the first sub-surface is opposite to the second surface and can slide along the width direction of the second surface, and the step is used to clamp with the first pressure plate.

2. The rotation mechanism according to claim 1, characterized in that: The first fixed plate and the first pressure plate rotate relative to the base, driving the first main swing arm and the first pressure plate swing arm to rotate relative to the base, and the first fixed plate slides relative to the first pressure plate along the width direction of the first pressure plate, and the rotation of the first pressure plate and the first fixed plate relative to the base can be in a flattened state or a folded state with the base.

3. The rotating mechanism according to claim 1 or 2, characterized in that: The first guide rod is a cylinder, and the first guide groove includes a first limit end and a second limit end opposite to the first limit end. The groove side walls of the first guide groove located at the first limit end and the second limit end are arc-shaped. When the first pressure plate rotates, the first guide rod slides in the first guide groove, and when the first guide rod slides to the first limit end, the first pressure plate is flattened relative to the base. When the first guide rod slides to the second limit end, the first pressure plate is folded relative to the base.

4. The rotating mechanism according to claim 1 or 2, characterized in that: In the thickness direction of the first main arm body, the first sub-surface and the second sub-surface have a height difference, the second sub-surface extends out of one side of the first pressing plate and is inclined compared to the first sub-surface.

5. The rotating mechanism according to claim 1 or 2, characterized in that: The first rotating body is arc-shaped, and a guide rib is 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; The base includes a first rotating groove, which is an arc-shaped groove and a guide sliding groove is provided on the bottom surface of the groove. The guide rib rotates along the guide sliding groove.

6. The rotation mechanism according to claim 4, characterized in that: The rotating mechanism also includes a second pressure plate, a second pressure plate swing arm, a second fixed plate and a second main swing arm. The second pressing plate includes a third surface and a fourth surface disposed opposite to the third surface, a second block is disposed on the fourth surface, and a second guide groove is disposed on the second block. The second pressure plate swing arm is fixed to the fourth surface of the second pressure plate and is spaced apart from the second block; The second main swing arm includes a third side surface and a fourth side surface disposed opposite to the third side surface, a second guide rod is protruded from the third side surface, and the second main swing arm is fixed to one end of the second fixing plate through the fourth side surface. The second pressing plate is stacked on the second fixing plate, the fourth surface faces the second fixing plate, the second guide rod is installed in the second guide groove, and the second guide rod can slide in the second guide groove along the width direction of the second pressing plate. The second pressure plate and the second fixed plate are located on one side of the base, the second pressure plate is opposite to the first pressure plate, and the second fixed plate is opposite to the first fixed plate; the base, the second pressure plate and the second fixed plate have the same length direction; the second main swing arm and the second pressure plate swing arm are rotatably mounted on the same side of the base.

7. The rotation mechanism according to claim 6, 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.

8. The rotation mechanism according to claim 7, characterized in that: The rotating mechanism includes a flattened state and a folded state. When the rotating mechanism is in the flattened state, the first fixing plate is stacked with the first pressing plate, the first pressing plate is parallel to the base, the second fixing plate is stacked with the second pressing plate, and the second pressing plate is parallel to the base. When the rotating mechanism is in the folded state, the first fixing plate and the first pressing plate both form an angle with the base, the second fixing plate and the second pressing plate both form an angle with the base, and the first pressing plate and the second pressing plate are opposite to each other and form an avoidance space.

9. The rotation mechanism according to claim 8, 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.

10. The rotating mechanism according to claim 8 or 9, characterized in that: The second main swing arm includes a second rotating body and a second main arm body, and the second rotating body is rotatably mounted in the base. The third side surface and the fourth side surface are arranged on the second main arm body, and the second main arm body also includes a third body surface connecting the third side surface and the third side surface, and the third body surface includes a first sub-surface and a second sub-surface, and a step is formed between the first sub-surface and the second sub-surface of the third body surface. The second fixed plate is stacked with the second pressure plate, and the second sub-surface is opposite to the fourth surface and can slide along the width direction of the fourth surface, and the step is used to clamp with the second pressure plate.

11. The rotating mechanism according to claim 10, characterized in that: In the thickness direction of the second main arm, the first sub-surface and the second sub-surface of the third surface have a height difference, the second sub-surface of the third surface extends out of one side of the second pressure plate, and the second sub-surface of the third surface is inclined compared to the first sub-surface of the third surface; The second sub-surface on the first main arm body forms an angle with the first surface of the first pressure plate, the second sub-surface on the second main arm body forms an angle with the third surface of the second pressure plate, and the second sub-surface on the first main arm body is opposite to the second sub-surface on the second main arm body.

12. The rotating mechanism according to claim 10, characterized in that: The second rotating body is arc-shaped, and a guide rib is provided on the surface of the second 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 second rotating body; The base includes a second rotating groove, which is an arc-shaped groove and a guide groove is provided on the bottom surface of the groove. The guide rib rotates along the guide groove.

13. The rotation 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 base includes a first rotation groove, a second rotation groove, a third rotation groove and a fourth rotation groove, the first rotation groove and the second rotation groove are arranged on one side of the bottom plate, the third rotation groove and the fourth rotation groove are arranged on the other side of the bottom plate, the first rotation groove, the second rotation groove, the third rotation groove and the fourth rotation groove are located in the receiving space, the first main swing arm and the first pressure plate swing arm are rotatably installed in the first rotation groove and the third rotation groove respectively, and the two main swing arms and the second pressure plate swing arm are installed in the second rotation groove and the fourth rotation groove.

14. The rotation mechanism according to claim 8, 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.

15. 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 14, the rotating mechanism is connected between the first shell and the second shell, the display screen is installed on the first shell, the second shell and the rotating mechanism, and when the rotating mechanism rotates, the first shell and the second shell rotate relative to each other, thereby driving the display screen to bend or unfold.

16. The foldable electronic device according to claim 15, 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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