Rotating mechanisms and electronic equipment

Abstract

The present application provides a rotating mechanism and an electronic device. The rotating mechanism includes a base, a first main swing arm, a second main swing arm, a first fixed frame, a second fixed frame and a synchronization component; the first main swing arm and the second main swing arm are respectively located on opposite sides of the base, the first main swing arm is rotationally connected to the base, the first main swing arm is also rotationally connected to the first fixed frame, the second main swing arm is rotationally connected to the base, and the second main swing arm is also rotationally connected to the second fixed frame; the synchronization component includes a first synchronization swing arm and a second synchronization swing arm respectively located on opposite sides of the base, the first synchronization swing arm is rotationally connected to the base, the first synchronization swing arm is also slidably connected to the first fixed frame, the second synchronization swing arm is rotationally connected to the base, and the second synchronization swing arm is also slidably connected to the second fixed frame. The rotating mechanism of the technical solution of the present application has an excellent rotation effect, which is conducive to improving the stress caused to the screen during the rotation process.

Description

Technical Field

[0001] The present application relates to the field of folding technology, and in particular to a rotating mechanism and an electronic device. Background Art

[0002] As flexible foldable screen technology matures, the application of flexible foldable terminal products is becoming increasingly widespread. Foldable terminal products (such as foldable phones, foldable tablets, foldable computers, and other electronic devices) must meet high-quality appearance and a good user experience to be accepted by consumers. Currently, the rotation mechanism of foldable terminal products during folding is poor, which can easily cause adverse effects on the screen during the bending process. Summary of the Invention

[0003] The embodiments of the present application provide a rotation mechanism and an electronic device. The rotation mechanism has an excellent rotation effect, which is beneficial to improving the stress caused to the screen during the rotation process.

[0004] In a first aspect, the present application provides a rotation mechanism, the rotation mechanism comprising a base, a first main swing arm, a second main swing arm, a first fixing frame, a second fixing frame and a synchronization assembly;

[0005] The first main swing arm and the second main swing arm are respectively located on opposite sides of the base, the first main swing arm is rotatably connected to the base, the first main swing arm is also rotatably connected to the first fixing frame, the second main swing arm is rotatably connected to the base, and the second main swing arm is also rotatably connected to the second fixing frame;

[0006] The synchronization assembly includes a first synchronization swing arm and a second synchronization swing arm respectively located on opposite sides of the base, the first synchronization swing arm being rotatably connected to the base and being slidably connected to the first fixed frame, the second synchronization swing arm being rotatably connected to the base and being slidably connected to the second fixed frame;

[0007] The first fixed frame is capable of rotating relative to the base, thereby driving the first main swing arm to rotate relative to the base, and driving the first synchronous swing arm to rotate relative to the base and slide relative to the first fixed frame. The second fixed frame is capable of rotating relative to the base, thereby driving the second main swing arm to rotate relative to the base, and driving the second synchronous swing arm to rotate relative to the base and slide relative to the second fixed frame. The first fixed frame and the second fixed frame rotate in opposite directions. For example, when the first fixed frame rotates clockwise, the second fixed frame rotates counterclockwise. When the first fixed frame rotates counterclockwise, the second fixed frame rotates clockwise.

[0008] Based on the above description, it should be understood that when the first fixing frame is driven by the first main swing arm to rotate relative to the base, the first synchronous swing arm can rotate relative to the base and slide relative to the first fixing frame. When the second fixing frame is driven by the second main swing arm to rotate relative to the base, the second synchronous swing arm can rotate relative to the base and slide relative to the second fixing frame.

[0009] In the technical solution of this application, the first main swing arm is rotatably connected to the base and to the first fixed frame, thereby forming a connecting rod structure. The first synchronous swing arm is rotatably connected to the base and slidably connected to the first fixed frame, thereby forming a connecting rod slider structure. Thus, the connection between the first fixed frame and the base is achieved through the connecting rod structure and the connecting rod slider structure. Under this architecture, the rotation mechanism has a small number of parts, simple mating relationships and mating positions, and the component parts are easy to manufacture and assemble, which is conducive to mass production.

[0010] Furthermore, the first main swing arm can serve as the main swing arm driving the first fixed frame, and the first synchronous swing arm can serve as the auxiliary swing arm driving the first fixed frame, thereby enabling the first fixed frame to be driven by both swing arms to rotate relative to the base. That is, when the first fixed frame rotates relative to the base, it can drive the first main swing arm to rotate relative to the base, as well as the first synchronous swing arm to rotate relative to the base and slide relative to the first fixed frame. Under this arrangement, the first fixed frame in the rotation mechanism is driven by both swing arms (the first main swing arm is the main swing arm, the first synchronous swing arm is the auxiliary swing arm). The rotation mechanism has a relatively small number of parts, and the mating relationship and mating position are simple, resulting in a better rotation effect of the rotation mechanism. This better rotation effect can avoid squeezing the flexible display screen during rotation, which helps to improve the screen stress experienced by the flexible display screen during rotation.

[0011] The second main swing arm is rotatably connected to the base and the second fixed frame, forming a connecting rod structure. The second synchronous swing arm is rotatably connected to the base and slidably connected to the second fixed frame, forming a connecting rod slider structure. Thus, the second fixed frame and the base are connected through the connecting rod and connecting rod slider structures. With this architecture, the rotation mechanism has a small number of parts, simple mating relationships and mating positions, and easy to manufacture and assemble the components, facilitating mass production.

[0012] Furthermore, the second main swing arm can serve as the main swing arm driving the second fixed frame, and the second synchronous swing arm can serve as the auxiliary swing arm driving the second fixed frame, thereby enabling the second fixed frame to be driven by both swing arms to rotate relative to the base. That is, when the second fixed frame rotates relative to the base, it can drive the second main swing arm to rotate relative to the base, as well as the second synchronous swing arm to rotate relative to the base and slide relative to the second fixed frame. With this arrangement, the second fixed frame in the rotation mechanism is driven by both swing arms (the second main swing arm is the main swing arm, and the second synchronous swing arm is the auxiliary swing arm). This rotation mechanism has a relatively small number of parts, and the mating relationship and mating position are simple, resulting in a better rotation effect. This better rotation effect can avoid squeezing the flexible display during rotation, which helps to improve the screen stress experienced by the flexible display during rotation.

[0013] Exemplarily, the rotation direction of the first main swing arm is opposite to that of the second main swing arm, and the rotation direction of the first synchronous swing arm is opposite to that of the second synchronous swing arm.

[0014] In one possible implementation, the rotation center of the first main swing arm is a first axis, the rotation center of the first synchronous swing arm is a second axis, and the orthographic projection of the first axis on the base and the orthographic projection of the second axis on the base are staggered.

[0015] The rotation center of the second main swing arm is the third axis, the rotation center of the second synchronous swing arm is the fourth axis, and the orthographic projection of the third axis on the base and the orthographic projection of the fourth axis on the base are staggered.

[0016] The rotation center (first axis) of the first main swing arm is the rotation center of the first main swing arm relative to the base, which can be understood as a straight line that allows the first main swing arm to rotate within an angle range of 0° to 90° relative to the base. The rotation center (second axis) of the first synchronous swing arm is the rotation center of the first synchronous swing arm relative to the base, which can be understood as a straight line that allows the first synchronous swing arm to rotate within an angle range of 0° to 90° relative to the base.

[0017] In this embodiment, the orthographic projection of the first axis on the base is offset from the orthographic projection of the second axis on the base. That is, the orthographic projection of the first axis on the base and the orthographic projection of the second axis on the base are not collinear, and are offset due to a distance difference between them. Consequently, when the first main swing arm and the first synchronous swing arm rotate relative to the base, the first main swing arm will rotate ahead of the first synchronous swing arm, while the first synchronous swing arm will rotate behind the first main swing arm, resulting in a phase difference between the two rotations.

[0018] Therefore, by utilizing the phase difference principle in which the first axis and the second axis are offset to produce a phase difference in the rotation between the two, the first main swing arm and the first synchronous swing arm rotate out of center during their rotation, thereby enabling the first synchronous swing arm and the first fixed frame to slide relative to each other during their rotation relative to the first fixed frame.

[0019] In one possible embodiment, the rotation mechanism further includes a first pressure plate and a second pressure plate, wherein the first pressure plate is rotationally connected to the first fixing frame and can be driven to rotate relative to the base by the rotation of the first fixing frame relative to the base; and the second pressure plate is rotationally connected to the second fixing frame and can be driven to rotate relative to the base by the rotation of the second fixing frame relative to the base. Exemplarily, the first and second pressure plates rotate in opposite directions, and the first and second synchronous swing arms rotate in opposite directions.

[0020] Thus, the first pressing plate can be rotated relative to the base to be flush with the base to achieve the function of flattening and supporting the flexible display screen, or the first pressing plate can be rotated relative to the base to be set at an angle with the base to achieve the function of folding the flexible display screen.

[0021] In a possible embodiment, the first pressing plate includes a first plate body and a first sliding body provided on the first plate body, the first fixing frame is provided with a first guide groove, and the first sliding body is slidably connected to the first guide groove;

[0022] The second pressing plate includes a second plate body and a second sliding body provided on the second plate body. The second fixing frame is provided with a second guide groove, and the second sliding body is slidably connected to the second guide groove.

[0023] Thus, the first pressing plate can rotate along with the first fixing frame when the first fixing frame rotates relative to the base through the sliding of the first sliding body in the first guide groove, thereby performing rotational motion relative to the base.

[0024] In a possible implementation manner, the rotating mechanism further includes a first auxiliary swing arm and a second auxiliary swing arm, wherein the first auxiliary swing arm and the second auxiliary swing arm are respectively located on opposite sides of the base;

[0025] The first auxiliary swing arm is rotatably connected to the base, and the first auxiliary swing arm is also rotatably connected to the first pressure plate. The first pressure plate can rotate relative to the base and drive the first auxiliary swing arm to rotate relative to the base and slide relative to the first pressure plate.

[0026] The second auxiliary swing arm is rotatably connected to the base, and the second auxiliary swing arm is also rotatably connected to the second pressure plate. The second pressure plate can rotate relative to the base and drive the second auxiliary swing arm to rotate relative to the base and slide relative to the second pressure plate.

[0027] That is, the first pressing plate can be connected to the base through the first auxiliary swing arm, so that the first pressing plate can better achieve rotational movement relative to the base.

[0028] In one possible embodiment, the first auxiliary swing arm includes a first rotating end, and the rotating mechanism also includes a first shaft, the first shaft is passed through the first rotating end, and the end of the first shaft extends out of the first rotating end and is connected to the base; the second auxiliary swing arm includes a second rotating end, and the rotating mechanism also includes a second shaft, the second shaft is passed through the second rotating end, and the end of the second shaft extends out of the second rotating end and is connected to the base.

[0029] Thus, the first rotating end can realize rotational connection with the base through the first shaft. That is, the first auxiliary swing arm is rotationally connected to the base. It should be understood that the first rotating end is not limited to being connected to the base through a real axis, and it can also realize rotational connection with the base through a virtual axis, and there is no strict restriction on this. Among them, the real axis refers to a rotatable object whose center of rotation is on itself. The virtual axis refers to a rotatable object whose center of rotation is not on itself. For example, the arc-shaped swing arm provided on object A and the arc-shaped groove provided on object B can form a virtual axis rotational connection between object A and object B through the sliding movement of the arc-shaped swing arm in the arc-shaped groove. The virtual axis means that the center of rotation of the arc-shaped swing arm on object A is not located on the arc-shaped swing arm. The real axis and the virtual axis are only different in the form of rotation. The specific application of the rotation form can be flexibly adjusted according to the actual application scenario, and there is no strict restriction on this.

[0030] In a possible embodiment, the first pressure plate includes a first plate body and a first slideway provided on the first plate body, and the first auxiliary swing arm further includes a first sliding end, and the first sliding end is slidably connected to the first slideway;

[0031] The second pressure plate includes a second plate body and a second slideway provided on the second plate body. The second auxiliary swing arm also includes a second sliding end, and the second sliding end is slidably connected to the second slideway.

[0032] Thus, the first auxiliary swing arm can rotate relative to the base and slide relative to the first pressure plate when the first pressure plate rotates relative to the base through the sliding of the first sliding end in the first slideway.

[0033] In one possible embodiment, the rotation mechanism also includes a synchronous gear, which is arranged inside the base. The first synchronous swing arm and the second synchronous swing arm are respectively connected to both sides of the synchronous gear. The first synchronous swing arm can rotate relative to the base and drive the second synchronous swing arm to rotate relative to the base through the synchronous gear.

[0034] That is, the first synchronous swing arm, the second synchronous swing arm and the synchronous gear can form a gear motion chain of "first synchronous swing arm-synchronous gear-second synchronous swing arm", thereby realizing the synchronous motion of the first synchronous swing arm and the second synchronous swing arm, that is, realizing the opening and closing of the first synchronous swing arm and the second synchronous swing arm, that is, realizing the opening and closing of the rotating mechanism. Among them, the synchronous motion can be understood as the synchronization of the rotation angles of the first synchronous swing arm and the second synchronous swing arm, that is, if the first synchronous swing arm rotates 30° relative to the base, the second synchronous swing arm will also rotate 30° relative to the base. In other words, the first synchronous swing arm and the second synchronous swing arm are respectively connected to the two sides of the synchronous gear, and the first synchronous swing arm can rotate relative to the base, and drive the second synchronous swing arm to rotate relative to the base through the synchronous gear.

[0035] In a possible embodiment, a first sliding groove is provided on the first fixing frame, one end of the first synchronous swing arm is rotatably connected to the synchronous gear, and the other end of the first synchronous swing arm is slidably connected to the first sliding groove;

[0036] The second fixing frame is provided with a second sliding groove, one end of the second synchronous swing arm is rotationally connected to the synchronous gear, and the other end of the second synchronous swing arm is slidingly connected to the second sliding groove.

[0037] Therefore, through the sliding cooperation between the first synchronous swing arm and the first fixed frame, the rotational motion of the first fixed frame relative to the base can be converted into the swinging motion of the first synchronous swing arm relative to the base, so that the first synchronous swing arm can serve as the auxiliary swing arm of the first fixed frame and cooperate with the first main swing arm to drive the first fixed frame, with good reliability.

[0038] In a second aspect, the present application further provides an electronic device, comprising a first shell, a second shell, and the rotation mechanism as described above, wherein the rotation mechanism is connected between the first shell and the second shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic diagram of the folded state of the electronic device provided by an embodiment of the present application;

[0040] Figure 2 is a schematic diagram of a semi-expanded state of an electronic device provided by an embodiment of the present application;

[0041] Figure 31 is a schematic diagram of an electronic device in an unfolded state provided by an embodiment of the present application;

[0042] Figure 4 is a structural diagram of an electronic device provided in an embodiment of the present application;

[0043] Figure 5 This is a partial exploded schematic diagram of an electronic device provided in an embodiment of the present application;

[0044] Figure 6 This is a schematic structural diagram of a rotation mechanism provided by an embodiment of the present application at one angle;

[0045] Figure 7 yes Figure 6 An exploded schematic diagram of the rotating mechanism shown;

[0046] Figure 8 is a structural schematic diagram of the rotation mechanism provided in an embodiment of the present application from another angle;

[0047] Figure 9 It is along Figure 6 Schematic diagram of the cross section after cutting along the cutting line B;

[0048] Figure 10 It is along Figure 6 Schematic diagram of the cross section after cutting along the cutting line C;

[0049] Figure 11 This is a schematic diagram of a state of the rotation mechanism provided in an embodiment of the present application;

[0050] Figure 12 yes Figure 11 A schematic structural diagram at an angle is shown. DETAILED DESCRIPTION

[0051] For ease of understanding, the terms involved in the embodiments of the present application are first explained.

[0052] And / or: It is just a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0053] Multiple: refers to two or more than two.

[0054] Connection: should be understood in a broad sense. For example, A and B are connected, which can be either directly connected or indirectly connected through an intermediary.

[0055] The specific implementation of the present application will be clearly described below with reference to the accompanying drawings.

[0056] As flexible foldable screen technology matures, the application of flexible foldable terminal products is becoming increasingly widespread. Foldable terminal products (such as foldable phones, foldable tablets, foldable computers, and other electronic devices) must meet high-quality appearance and a good user experience to be accepted by consumers. Currently, the rotation mechanism of foldable terminal products during folding is poor, which can easily cause adverse effects on the screen during the bending process.

[0057] Based on this, please refer to Figures 1-12 The embodiment of the present application provides a rotation mechanism 100 and an electronic device 400 using the rotation mechanism 100. The rotation mechanism 100 has an excellent rotation effect, which is beneficial to improving the stress caused to the screen during the rotation process.

[0058] The electronic device 400 may be any foldable device that can be unfolded and closed by a user. The electronic device 400 includes, but is not limited to, a cell phone, a notebook computer, a tablet personal computer, a laptop computer, a personal digital assistant, a wearable device, or a mobile device. In the embodiments of the present application, the electronic device 400 is described as a cell phone.

[0059] Figure 1 The electronic device 400 is shown in a folded state. Figure 2 The electronic device 400 is shown in a semi-expanded state. Figure 3 The electronic device 400 is shown in an unfolded state. Figure 2 The unfolding angle α of the electronic device 400 is 120 degrees. Figure 3 The deployed angle β of the electronic device 400 is shown to be 180 degrees.

[0060] 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 α of the electronic device 400 shown is 120 degrees, which means that α can be 120 degrees, or approximately 120 degrees, such as 110 degrees, 115 degrees, 125 degrees, or 130 degrees. Figure 3 The unfolding angle β of the electronic device 400 shown is 180 degrees, which means that β can be 180 degrees or approximately 180 degrees, such as 0 degrees, 5 degrees, 185 degrees, and 190 degrees. The angles described below by way of example can be understood in the same way.

[0061] The electronic device 400 shown in the embodiment of the present application is an electronic device that can be folded once. In other embodiments, the electronic device 400 can also be an electronic device that can be folded multiple times (more than twice). In this case, the electronic device 400 can include multiple parts, where two adjacent parts can be folded relatively close together until the electronic device 400 is in the folded state, and the two adjacent parts can be unfolded relatively far apart until the electronic device 400 is in the unfolded state.

[0062] Please refer to Figure 4 and Figure 5 The electronic device 400 includes a folding device 200 and a flexible display 300, and the flexible display 300 is mounted on the folding device 200. The flexible display 300 includes a first portion 310, a second portion 320, and a foldable portion 330. The foldable portion 330 is located between the first portion 310 and the second portion 320, and the foldable portion 330 can be bent. The first portion 310, the second portion 320, and the foldable portion 330 together constitute the flexible display 300. In this embodiment, the flexible display 300 can be an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (AMOLED) display, a mini organic light-emitting diode (MLED) display, a micro organic light-emitting diode (MLED) display, or a quantum dot light-emitting diode (QLED) display.

[0063] The folding device 200 includes a first shell 210, a second shell 220 and a rotating mechanism 100. The first shell 210 is provided with a first mounting groove 230, and the second shell 220 is provided with a second mounting groove 240. The first mounting groove 230 and the second mounting groove 240 are connected to form a mounting groove. The rotating mechanism 100 is installed in the mounting groove and is fixedly connected to the first shell 210 and the second shell 220 to achieve a rotational connection between the first shell 210 and the second shell 220. The first shell 210 and the second shell 220 can rotate relative to each other through the rotating mechanism 100, so that the folding device 200 can switch between a folded state and an unfolded state. The first shell 210 and the second shell 220 are also provided with a receiving groove (not shown in the figure), which is used to accommodate electronic components and structural elements such as the processor, circuit board, camera module, etc. of the electronic device 400.

[0064] The relative rotation of the first shell 210 and the second shell 220 causes the folding device 200 to be in a folded state, which means that the first shell 210 and the second shell 220 are rotated by the rotating mechanism 100 and approach each other, and the surfaces of the first shell 210 and the second shell 220 that support the flexible display 300 face each other. In practice, during use, when the folding device 200 is in a fully folded state, after the flexible display 300 mounted on the first shell 210 and the second shell 220 are folded, the first portion 310 and the second portion 320 overlap and partially contact each other, or of course, they can also be in full contact. The relative rotation of the first shell 210 and the second shell 220 causes the folding device 200 to be in a semi-expanded state, which means that the first shell 210 and the second shell 220 are rotated by the rotating mechanism 100 and move away from each other, and the angle between the first shell 210 and the second shell 220 becomes increasingly larger, and can be close to or equal to 90 degrees. The relative rotation of the first shell 210 and the second shell 220 makes the folding device 200 in the unfolded state, which means that the first shell 210 and the second shell 220 are rotated by the rotating mechanism 100 and move away from each other, and the angle between the first shell 210 and the second shell 220 continues to increase and can be close to 180 degrees or equal to 180 degrees.

[0065] The flexible display 300 is connected to the folding device 200. Specifically, the first housing 210 supports the first portion 310 of the flexible display 300, the second housing 220 supports the second portion 320 of the flexible display 300, and the foldable portion 330 of the flexible display 300 is disposed opposite the rotation mechanism 100. It will be understood that the first and second housings 210, 220 rotate relative to each other via the rotation mechanism 100. The relative proximity of the first and second housings 210, 220 drives the flexible display 300 to fold, thereby folding the electronic device 400. When the electronic device 400 is in the folded state, the foldable portion 330 of the flexible display 300 bends, and the first and second portions 310, 320 are disposed opposite each other. At this point, the flexible display 300 is positioned between the first and second housings 210, 220, significantly reducing the likelihood of damage to the flexible display 300 and effectively protecting it.

[0066] Please also refer to Figure 2 and Figure 4, the first shell 210 and the second shell 220 rotate relative to each other through the rotating mechanism 100, and the first shell 210 and the second shell 220 move away from each other to drive the flexible display screen 300 to unfold, so that the electronic device 400 is unfolded to a semi-expanded state. When the electronic device 400 is in the semi-expanded state, the first shell 210 and the second shell 220 unfold to an angle α, the first part 310 and the second part 320 unfold relative to each other, and drive the foldable part 330 to unfold. At this time, the angle between the first part 310 and the second part 320 is α. In this embodiment, α is 120 degrees. In other embodiments, α may also be approximately 120 degrees, or may be 110 degrees, 115 degrees, 125 degrees, or 130 degrees, etc.

[0067] Please also refer to Figure 3 and Figure 4 , the first shell 210 and the second shell 220 rotate relative to each other through the rotating mechanism 100, and the first shell 210 and the second shell 220 move away from each other, driving the flexible display screen 300 to further unfold until the electronic device 400 unfolds. When the folding device 200 is in the unfolded state, the angle between the first shell 210 and the second shell 220 is β. The foldable part 330 is unfolded, and the first part 310 and the second part 320 are relatively unfolded. At this time, the angles between the first part 310, the second part 320 and the foldable part 330 are all β, and the flexible display screen 300 has a large display area, realizing a large-screen display of the electronic device 400 and improving the user experience. In this embodiment, β is 180 degrees. In other embodiments, β can also be approximately 180 degrees, and can be 0 degrees, 5 degrees, 185 degrees, 190 degrees, etc.

[0068] Please refer to Figure 6 and Figure 7 The rotating mechanism 100 includes a base 10, a first fixing frame 21, a second fixing frame 22, a first main swing arm 31, a second main swing arm 32, a first auxiliary swing arm 41, a second auxiliary swing arm 42, a first pressure plate 51, a second pressure plate 52, and a synchronization assembly 60. The synchronization assembly 60 may include a first synchronization swing arm 61, a second synchronization swing arm 62, and a synchronization gear 63.

[0069] The first fixing frame 21, the first pressing plate 51, the base 10, the second pressing plate 52, and the second fixing frame 22 are arranged in sequence in the direction of extension of the flexible display 300. With this arrangement, the first fixing frame 21, the first pressing plate 51, the base 10, the second pressing plate 52, and the second fixing frame 22 can collectively support the flexible display 300 in the closed, intermediate, and flattened states of the electronic device 400.

[0070] Specifically, when the electronic device 400 is flattened, the first fixing frame 21, first pressure plate 51, base 10, second pressure plate 52, and second fixing frame 22 are flush and can jointly support the flexible display 300. This makes the flexible display 300 more flat and less susceptible to damage from external touch, thereby improving the reliability of the flexible display 300. When the electronic device 400 is closed, the first housing 210 and the second housing 220 can be closed until they are parallel to each other, so that the first fixing frame 21, first pressure plate 51, base 10, second pressure plate 52, and second fixing frame 22 jointly form a receiving space for the flexible display 300, thereby providing better support for the flexible display 300. For example, the receiving space can be in the shape of a water droplet or a baseball.

[0071] For example, the first pressing plate 51 and the second pressing plate 52 are symmetrically distributed on both sides of the base 10, the first fixing frame 21 and the second fixing frame 22 are symmetrically distributed on both sides of the base 10, and the first shell 210 and the second shell 220 are symmetrically distributed on both sides of the base 10. However, it should be understood that symmetrical distribution refers to symmetrical distribution in position, and does not mean that the shapes and structures of the two support plates, the two fixing frames, and the two shells are exactly the same. The structures of the two support plates, the two fixing frames, and the two shells can be the same or different, and the embodiments of the present application do not impose strict limitations on this.

[0072] The following will be combined Figure 6-Figure 12 The various components of the rotating mechanism 100 and the connection relationship between them are described in detail.

[0073] Please refer to Figure 6 and Figure 7 , the base 10 can remain stationary during the relative folding and unfolding of the first fixing frame 21 and the second fixing frame 22. In other words, during the relative folding and unfolding of the first fixing frame 21 and the second fixing frame 22, the base 10 can maintain its position unchanged, that is, the base 10 remains relatively stationary, while both the first fixing frame 21 and the second fixing frame 22 can rotate relative to the base 10.

[0074] The base 10 has a receiving space therein, which can be used to receive at least some of the components of the rotating mechanism 100 and other structures in the electronic device 400. For example, the synchronization gear 63 in the synchronization assembly 60 can be disposed inside the base 10, and the base 10 can be used to receive the synchronization gear 63. Specifically, Figure 7As shown, the synchronous gear 63 includes a first rotating gear 631, a second rotating gear 632, a first synchronous gear 633, and a second synchronous gear 634. The first rotating gear 631, the second rotating gear 632, the first synchronous gear 633, and the second synchronous gear 634 are all located in a receiving space within the base 10. The first rotating gear 631 is engaged with the first synchronous gear 633, the second rotating gear 632 is engaged with the second synchronous gear 634, and the first synchronous gear 633 is also engaged with the second synchronous gear 634.

[0075] Please continue reading Figure 6 and Figure 7 , the first fixing frame 21 is connected to the first shell 210 and can be linked with the first shell 210. That is, when the first shell 210 rotates, the first fixing frame 21 will be driven and rotate synchronously. When the first fixing frame 21 rotates, the first shell 210 will be driven and rotate synchronously. As a result, the electronic device 400 as a whole can have better mechanical tensile strength and mechanical anti-extrusion ability. The key design of this application does not lie in the connection implementation form between the first fixing frame 21 and the first shell 210, and there is no strict restriction on the specific structure and connection position of the connection between the first fixing frame 21 and the first shell 210.

[0076] The first fixing frame 21 is provided with a first guide groove 211, located at one end of the first fixing frame 21. The first guide groove 211 can be used to cooperate with the first sliding body 512 on the first pressure plate 51 to achieve a rotational connection between the first fixing frame 21 and the first pressure plate 51. For example, the first guide groove 211 can be arc-shaped, capable of cooperating with the arc-shaped first sliding body 512 on the first pressure plate 51. Through relative movement between the first guide groove 211 and the first pressure plate 51, a rotational connection is formed between the first fixing frame 21 and the first pressure plate 51, thereby ensuring stability when the rotating mechanism 100 is opened and closed.

[0077] The first fixed frame 21 is also provided with a first slide groove 212, located at the other end of the first fixed frame 21. The first slide groove 212 can cooperate with the first synchronous swing arm 61 to achieve a sliding connection with the first synchronous swing arm 61. For example, the first slide groove 212 can be a through groove, and its shape can be adaptively adjusted to the shape of the structure sliding therein, without strict limitation. For example, if the structure sliding therein is rectangular, the first slide groove 212 can be a corresponding rectangular groove.

[0078] It should be understood that the first sliding groove 212 and the first guiding groove 211 can be respectively located at the two ends of the first fixed frame 21, so that the rotational movement between the first fixed frame 21 and the first pressure plate 51, and the sliding movement between the first fixed frame 21 and the first synchronous swing arm 61 can both have appropriate movement space, so as to minimize the possibility of mutual interference caused by the overlapping movement space of the two, and improve reliability.

[0079] The second fixing frame 22 is connected to the second shell 220 and can be linked with the second shell 220. That is, when the second shell 220 rotates, the second fixing frame 22 will be driven and rotate synchronously. When the second fixing frame 22 rotates, the second shell 220 will be driven and rotate synchronously. As a result, the electronic device 400 as a whole has better mechanical tensile strength and mechanical anti-extrusion capabilities. The key design of this application does not lie in the connection implementation form of the second fixing frame 22 and the second shell 220. There is no strict restriction on the specific structure and connection position of the second fixing frame 22 and the second shell 220.

[0080] The second fixing frame 22 is provided with a second guide groove 221, which is located at one end of the second fixing frame 22. The second guide groove 221 can be used to cooperate with the second sliding body 522 on the second pressure plate 52 to achieve a rotational connection between the second fixing frame 22 and the second pressure plate 52. For example, the second guide groove 221 can be arc-shaped, capable of cooperating with the arc-shaped second sliding body 522 on the second pressure plate 52. Through the relative movement between the second guide groove 22 and the second pressure plate 52, a rotational connection is formed between the second fixing frame 22 and the second pressure plate 52, thereby ensuring the stability of the rotating mechanism 100 when opening and closing.

[0081] The second fixing frame 22 is also provided with a second slide groove 222, located at the other end of the second fixing frame 22. The second slide groove 222 can cooperate with the second synchronous swing arm 62 to achieve a sliding connection with the second synchronous swing arm 62. For example, the second slide groove 222 can be a through groove, and its shape can be adaptively adjusted to the shape of the structure sliding therein, without strict limitation. For example, if the structure sliding therein is rectangular, the second slide groove 222 can be a corresponding rectangular groove.

[0082] It should be understood that the second sliding groove 222 and the second guide groove 221 can be respectively located at the two ends of the second fixed frame 22, so that the rotational movement between the second fixed frame 22 and the second pressure plate 52, and the sliding movement between the second fixed frame 22 and the second synchronous swing arm 62 can both have appropriate movement space, so as to minimize the possibility of mutual interference caused by the overlapping movement space of the two, and improve reliability.

[0083] Based on the above description, when the first fixing frame 21 and the second fixing frame 22 rotate relative to the base 10 and approach each other, the first shell 210 and the second shell 220 also rotate relative to the base 10 and approach each other, thereby achieving the relative folding of the first shell 210 and the second shell 220. When the first fixing frame 21 and the second fixing frame 22 rotate relative to the base 10 and move away from each other, the first shell 210 and the second shell 220 also rotate relative to the base 10 and move away from each other, thereby achieving the relative unfolding of the first shell 210 and the second shell 220.

[0084] Please refer to Figure 6 and Figure 7 In the embodiment of the present application, the first pressure plate 51 is rotatably connected to the first fixing frame 21. As the first fixing frame 21 rotates relative to the base 10, the first pressure plate 51 is driven to rotate accordingly. In other words, the first pressure plate 51 can be driven to rotate relative to the base 10 by the rotation of the first fixing frame 21 relative to the base 10.

[0085] Specifically, if Figure 7 As shown, the first pressure plate 51 includes a first plate 511, a first slider 512, and a first slide 513. The first plate 511 includes a first surface 514 and a second surface 515, which are disposed opposite each other. The first surface 514 is the surface of the first plate 511 capable of supporting the flexible display 300, and the second surface 515 is the surface of the first plate 511 facing away from the flexible display 300. One end of the first slider 512 is connected to the second surface 515 of the first plate 511, and the other end of the second slider 512 protrudes relative to the first plate 511. The position of the first slider 512 corresponds to the position of the first guide groove 211 on the first fixed frame 21, allowing the first slider 512 to slide within the first guide groove 211. As a result, the first pressure plate 51 can rotate with the first fixed frame 21 as the first fixed frame 21 rotates relative to the base 10 due to the sliding of the first slider 512 within the first guide groove 211, thereby rotating relative to the base 10. It should be understood that the shape of the first sliding body 512 can be compatible with the first guide groove 211 on the first fixed frame 21, thereby enabling the first sliding body 512 to slide within the first guide groove 211. For example, the first sliding body 512 can be arc-shaped. The first slide 513 is provided on the second surface 515 of the first plate 511, and the first slide 513 allows the first auxiliary swing arm 41 to slide therein. The first slide 513 is spaced apart from the first sliding body 512 to prevent them from interfering with each other. The specific structural form of the first slide 513 can be adapted to the portion of the first auxiliary swing arm 41 that slides therein, and the embodiments of the present application are not strictly limited to this.

[0086] Please refer to Figure 7 and Figure 8, the first auxiliary swing arm 41 is connected to the base 10 in a rotational manner, and is connected to the first pressure plate 51 in a rotational and sliding manner. That is, the first pressure plate 51 can be connected to the base 10 through the first auxiliary swing arm 41. Specifically, the first auxiliary swing arm 41 includes a first rotating end 411 and a first sliding end 412. A first shaft 413 is provided on the first rotating end 411, and the end of the first shaft 413 extends out of the first rotating end 411 and is connected to the base 10. Thus, Figure 9 As shown, the first rotating end 411 can be rotationally connected to the base 10 via the first shaft 413. That is, the first auxiliary swing arm 41 is rotationally connected to the base 10. It should be understood that the first rotating end 411 is not limited to being connected to the base 10 via a real axis (i.e., the first shaft 413). It can also be rotationally connected to the base 10 via a virtual axis, and this is not strictly limited. A real axis refers to a rotatable object whose center of rotation is located on the real axis. A virtual axis refers to a rotatable object whose center of rotation is not located on the real axis. For example, a curved swing arm on object A and a curved slot on object B can form a virtual axis rotational connection between objects A and B through the sliding motion of the curved swing arm within the curved slot. The virtual axis refers to the fact that the center of rotation of the curved swing arm on object A is not located on the curved swing arm. The real axis and the virtual axis differ only in the form of rotation. The specific form of rotation can be flexibly adjusted according to the actual application scenario and is not strictly limited. The first sliding end 412 extends into the first slideway 513 of the first pressure plate 51 and is capable of sliding within the first slideway 513. In other words, the first sliding end 412 is slidably connected to the first slideway 513. As a result, the first auxiliary swing arm 41 can rotate relative to the base 10 and slide relative to the first pressure plate 51 as the first sliding end 412 slides within the first slideway 513 during rotation of the first pressure plate 51 relative to the base 10.

[0087] Please refer to Figure 6 and Figure 7 The second pressure plate 52 is rotatably connected to the second fixing frame 22. When the second fixing frame 22 rotates relative to the base 10, the second pressure plate 52 is driven to rotate accordingly. In other words, the second pressure plate 52 can be driven to rotate relative to the base 10 by the rotation of the second fixing frame 22 relative to the base 10.

[0088] Specifically, if Figure 7As shown, the second pressure plate 52 includes a second plate 521, a second sliding body 522, and a second slide 523. The second plate 521 includes a third surface 524 and a fourth surface 525, which are disposed opposite each other. The third surface 524 is the surface of the second plate 521 capable of supporting the flexible display 300, and the fourth surface 525 is the surface of the second plate 521 facing away from the flexible display 300. One end of the second sliding body 522 is connected to the fourth surface 525 of the second plate 521, and the other end of the second sliding body 522 protrudes relative to the second plate 521. The position of the second sliding body 522 corresponds to the position of the second guide groove 221 on the second fixing frame 22, allowing the second sliding body 522 to slide within the second guide groove 221. As a result, the second pressure plate 52 can rotate with the second fixing frame 22 as the second fixing frame 22 rotates relative to the base 10 due to the sliding of the second sliding body 522 within the second guide groove 221, thereby rotating relative to the base 10. It should be understood that the shape of the second sliding body 522 can be compatible with the second guide groove 221 on the second fixing frame 22, thereby enabling the second sliding body 522 to slide within the second guide groove 221. For example, the second sliding body 522 can be arc-shaped. The second slide 523 is provided on the fourth surface 525 of the second plate 521, and the second slide 523 allows the second auxiliary swing arm 42 to slide within the second slide 523. The second slide 523 is spaced apart from the second sliding body 522 to prevent mutual interference. The specific structural form of the second slide 523 can be compatible with the portion of the second auxiliary swing arm 42 that slides within it, and the embodiments of the present application are not strictly limited to this.

[0089] Please refer to Figure 7 and Figure 8 The second auxiliary swing arm 42 is connected to the base 10 in a rotational manner and is connected to the second pressure plate 52 in a rotational and sliding manner. In other words, the second pressure plate 52 can be connected to the base 10 through the second auxiliary swing arm 42. Specifically, the second auxiliary swing arm 42 includes a second rotating end 421 and a second sliding end 422. A second shaft 423 is provided on the second rotating end 421, and the end of the second shaft 423 extends out of the second rotating end 421 and is connected to the base 10. Figure 9As shown, the second rotating end 421 can be rotationally connected to the base 10 via the second shaft 423. That is, the second auxiliary swing arm 42 is rotationally connected to the base 10. It should be understood that the second rotating end 421 is not limited to being connected to the base 10 via a real axis (i.e., the second shaft 423). It can also be rotationally connected to the base 10 via a virtual axis, and this is not strictly limited. A real axis refers to a rotatable object whose center of rotation is located on the object itself. A virtual axis refers to a rotatable object whose center of rotation is not located on the object itself. For example, a curved swing arm on object A and a curved slot on object B can form a virtual axis rotational connection between objects A and B through the sliding motion of the curved swing arm within the curved slot. The virtual axis refers to the fact that the center of rotation of the curved swing arm on object A is not located on the curved swing arm. The real axis and the virtual axis differ only in the form of rotation. The specific form of rotation can be flexibly adjusted according to the actual application scenario and is not strictly limited. The second sliding end 422 extends into the second slideway 523 of the second pressure plate 52 and is capable of sliding within the second slideway 523. In other words, the second sliding end 422 is slidably connected to the second slideway 523. As a result, the second auxiliary swing arm 42 can rotate relative to the base 10 and slide relative to the second pressure plate 52 as the second sliding end 422 slides within the second slideway 523 during rotation of the second pressure plate 52 relative to the base 10.

[0090] Based on the above description, it should be understood that when the first pressure plate 51 is driven by the first fixing frame 21 to rotate relative to the base 10, the first auxiliary swing arm 41 can rotate relative to the base 10 and slide relative to the first pressure plate 51. When the second pressure plate 52 is driven by the second fixing frame 22 to rotate relative to the base 10, the second auxiliary swing arm 42 can rotate relative to the base 10 and slide relative to the second pressure plate 52. As a result, the first pressure plate 51 and the second pressure plate 52 can rotate away from each other relative to the base 10 until they are flush, thereby flattening and supporting the flexible display 300. Alternatively, the first pressure plate 51 and the second pressure plate 52 can rotate toward each other relative to the base 10 and close together, thereby folding the flexible display 300.

[0091] Please refer to Figure 7 and Figure 8 In the embodiment of the present application, the first fixing frame 21 can be connected to the base 10 by rotation through the first main swing arm 31. Specifically, Figure 10As shown, one end 311 of the first main swing arm 31 is rotatably connected to the base 10, allowing the first main swing arm 31 to rotate relative to the base 10. The connection between the first main swing arm 31 and the base 10 can be via a virtual axis. Specifically, a curved arm is provided on the first main swing arm 31, and a curved groove is provided within the base 10. The sliding movement of the curved arm within the curved groove enables rotational movement of the first main swing arm 31 and the base 10. Alternatively, the connection between the first main swing arm 31 and the base 10 can be via a real axis. The other end 312 of the first main swing arm 31 is rotatably connected to the first fixed frame 21, allowing the first main swing arm 31 to rotate in tandem with the first fixed frame 21. Specifically, when the first main swing arm 31 rotates, the first fixed frame 21 is driven to rotate synchronously. When the first fixed frame 21 rotates, the first main swing arm 31 is driven to rotate synchronously. As a result, the first fixing frame 21 can rotate relative to the base 10, driving the first main swing arm 31 to rotate relative to the base 10, forming a rotation chain of "first fixing frame 21 - first main swing arm 31 - base 10", allowing the rotation mechanism 100 to rotate smoothly. For example, the first main swing arm 31 can be rotationally connected to the first fixing frame 21 via a real axis.

[0092] Please continue reading Figure 10 The second fixed frame 22 is rotatably connected to the base 10 via a second main swing arm 32. Specifically, one end 321 of the second main swing arm 32 is rotatably connected to the base 10, enabling rotational movement relative to the base 10. The second main swing arm 32 and the base 10 can be connected via a virtual axis. Specifically, a curved arm is provided on the second main swing arm 32, and a curved slot is provided within the base 10. Rotational movement of the second main swing arm 32 and the base 10 is achieved by sliding the curved arm within the slot. Alternatively, the second main swing arm 32 and the base 10 can be connected via a real axis. The other end 322 of the second main swing arm 32 is rotatably connected to the second fixed frame 22, enabling interlocking movement. Specifically, when the second main swing arm 32 rotates, the second fixed frame 22 is driven to rotate synchronously. When the second fixed frame 22 rotates, the second main swing arm 32 is driven to rotate synchronously. As a result, the second fixing frame 22 can rotate relative to the base 10, driving the second main swing arm 32 to rotate relative to the base 10, thereby forming a rotation chain of "second fixing frame 22 - second main swing arm 32 - base 10", allowing the rotation mechanism 100 to rotate smoothly. For example, the second main swing arm 32 can be rotationally connected to the second fixing frame 22 via a real axis.

[0093] In the embodiment of the present application, the first main swing arm 31 and the second main swing arm 32 are respectively located on either side of the base 10, and the first synchronous swing arm 61 and the second synchronous swing arm 62 are respectively located on either side of the base 10. When the first fixing frame 21 is driven by the first main swing arm 31 to rotate relative to the base 10, the first synchronous swing arm 61 can rotate relative to the base 10 and slide relative to the first fixing frame 21. When the second fixing frame 22 is driven by the second main swing arm 32 to rotate relative to the base 10, the second synchronous swing arm 62 can rotate relative to the base 10 and slide relative to the second fixing frame 22.

[0094] Please refer again Figure 7 and Figure 8 One end 611 of the first synchronous swing arm 61 extends into the interior of the base 10 and is connected to the first rotating gear 631. The first synchronous swing arm 61 can be driven to rotate relative to the base 10 through the meshing relationship between the first rotating gear 631 and the first synchronous gear 633. In other words, the first synchronous swing arm 61 can rotate relative to the base 10. For example, the first synchronous swing arm 61 and the first rotating gear 631 can be an assembled structure formed by welding, bonding, etc., or the first synchronous swing arm 61 and the first rotating gear 631 can be an integral structure formed by an integral molding process.

[0095] The other end 612 of the first synchronous swing arm 61 extends into the first slot 212 of the first fixed frame 21 and is able to slide within the first slot 212. In other words, the first synchronous swing arm 61 is slidably connected to the first fixed frame 21. This sliding engagement between the first synchronous swing arm 61 and the first fixed frame 21 converts the rotational motion of the first fixed frame 21 relative to the base 10 into the swinging motion of the first synchronous swing arm 61 relative to the base 10. This allows the first synchronous swing arm 61 to function as a secondary swing arm of the first fixed frame 21, cooperating with the first main swing arm 31 to drive the first fixed frame 21, resulting in high reliability.

[0096] Based on the above description, it should be understood that since the first synchronous swing arm 61 is rotationally connected to the base 10 and slidingly connected to the first fixed frame 21, the first synchronous swing arm 61 can be driven to rotate relative to the base 10 and slide relative to the first fixed frame 21 when the first fixed frame 21 rotates relative to the base 10.

[0097] In the embodiment of the present application, the first main swing arm 31 is rotationally connected to the base 10 and to the first fixed frame 21, thereby forming a connecting rod structure. The first synchronous swing arm 61 is rotationally connected to the base 10 and slidably connected to the first fixed frame 21, thereby forming a connecting rod slider structure. Thus, the connection between the first fixed frame 21 and the base 10 is achieved through the connecting rod structure and the connecting rod slider structure. With this architecture, the rotation mechanism 100 has a small number of parts, simple mating relationships and mating positions, and easy manufacturing and assembly of the components, which is conducive to mass production.

[0098] Furthermore, the first main swing arm 31 can serve as the main swing arm driving the first fixed frame 21, and the first synchronous swing arm 61 can serve as the secondary swing arm driving the first fixed frame 21. This allows the first fixed frame 21 to be driven by both swing arms to rotate relative to the base 10. Specifically, when the first fixed frame 21 rotates relative to the base 10, it can drive the first main swing arm 31 to rotate relative to the base 10, as well as the first synchronous swing arm 61 to rotate relative to the base 10 and slide relative to the first fixed frame 21. With this arrangement, the first fixed frame 21 in the rotation mechanism 100 is driven by both swing arms (the first main swing arm 31 as the main swing arm and the first synchronous swing arm 61 as the secondary swing arm). This reduces the number of components and simplifies the mating relationships and positions, resulting in a superior rotational performance. This superior rotational performance prevents compression of the flexible display 300 during rotation, thereby reducing screen stress on the flexible display 300 during rotation.

[0099] In one possible implementation, Figure 7 As shown, the first main swing arm 31 has a rotation center, which is the first axis. The orthographic projection of the first axis on the base 10 is the first projection A1. The rotation center (first axis) of the first main swing arm 31 is the rotation center of the first main swing arm 31 and the base 10, which can be understood as a straight line around which the first main swing arm 31 can rotate within an angle range of 0° to 90° relative to the base 10. The first synchronous swing arm 61 has a rotation center, which is the second axis. The orthographic projection of the second axis on the base 10 is the second projection A2. The rotation center (second axis) of the first synchronous swing arm 61 is the rotation center of the first synchronous swing arm 61 and the base 10, which can be understood as a straight line around which the first synchronous swing arm 61 can rotate within an angle range of 0° to 90° relative to the base 10.

[0100] In this embodiment, the orthographic projection of the first axis on the base 10 (first projection A1) and the orthographic projection of the second axis on the base 10 (second projection A2) are offset. That is, the orthographic projection of the first axis on the base 10 and the orthographic projection of the second axis on the base 10 are not collinear, and are offset due to a distance difference between them. Therefore, when the first main swing arm 31 and the first synchronous swing arm 61 rotate relative to the base 10, the first main swing arm 31 will rotate ahead of the first synchronous swing arm 61, and the first synchronous swing arm 61 will rotate behind the first main swing arm 31, resulting in a phase difference between the rotations of the two.

[0101] Therefore, by utilizing the phase difference principle in which the first axis and the second axis are offset to produce a phase difference in the rotation between the two, the first main swing arm 31 and the first synchronous swing arm 61 rotate out of center during their rotation, thereby enabling the first synchronous swing arm 61 to slide relative to the first fixed frame 21 during the rotation of the first main swing arm 31 relative to the first fixed frame 21.

[0102] Please refer to Figure 7 and Figure 8 One end 621 of the second synchronous swing arm 62 extends into the interior of the base 10 and is connected to the second rotating gear 632. The second synchronous swing arm 62 can be driven to rotate relative to the base 10 through the meshing relationship between the second rotating gear 632 and the second synchronous gear 634. In other words, the second synchronous swing arm 62 can rotate relative to the base 10. For example, the second synchronous swing arm 62 and the second rotating gear 632 can be an assembled structure formed by welding, bonding, etc., or the second synchronous swing arm 62 and the second rotating gear 632 can be an integral structure formed by an integral molding process.

[0103] It is understandable that, since the second synchronous gear 634 is also meshed with the first synchronous gear 633, due to the mutual meshing relationship between the two, when one rotates, the other can also rotate synchronously. That is, the first synchronous swing arm 61, the second synchronous swing arm 62, the first rotating gear 631, the second rotating gear 632, the first synchronous gear 633 and the second synchronous gear 634 can form a gear motion chain of "first synchronous swing arm 61-first rotating gear 631-first synchronous gear 633-second synchronous gear 634-second rotating gear 632-second synchronous swing arm 62", thereby achieving the synchronous movement of the first synchronous swing arm 61 and the second synchronous swing arm 62, that is, achieving the opening and closing of the first synchronous swing arm 61 and the second synchronous swing arm 62, that is, achieving the opening and closing of the electronic device 400. Synchronous motion can be understood as the synchronization of the rotation angles of the first and second synchronous swing arms 61, 62. That is, if the first synchronous swing arm 61 rotates 30° relative to the base 10, the second synchronous swing arm 62 will also rotate 30° relative to the base 10. In other words, the first and second synchronous swing arms 61, 62 are respectively connected to the two sides of the synchronous gear 63. The first synchronous swing arm 61 can rotate relative to the base 10, and through the synchronous gear 63, the second synchronous swing arm 62 is driven to rotate relative to the base 10.

[0104] The other end 622 of the second synchronous swing arm 62 extends into the second slot 222 of the second fixed frame 22 and is able to slide within the second slot 222. In other words, the second synchronous swing arm 62 is slidably connected to the second fixed frame 22. This sliding engagement between the second synchronous swing arm 62 and the second fixed frame 22 converts the rotational motion of the second fixed frame 22 relative to the base 10 into the swinging motion of the second synchronous swing arm 62 relative to the base 10. This allows the second synchronous swing arm 62 to function as a secondary swing arm of the second fixed frame 22, cooperating with the second main swing arm 32 to drive the second fixed frame 22, resulting in high reliability.

[0105] Based on the above description, it should be understood that since the second synchronous swing arm 62 is rotationally connected to the base 10 and slidingly connected to the second fixed frame 22, the second synchronous swing arm 62 can be driven to rotate relative to the base 10 and slide relative to the second fixed frame 22 when the second fixed frame 22 rotates relative to the base 10.

[0106] In the embodiment of the present application, the second main swing arm 32 is rotationally connected to the base 10 and to the second fixed frame 22, thereby forming a connecting rod structure. The second synchronous swing arm 62 is rotationally connected to the base 10 and slidably connected to the second fixed frame 22, thereby forming a connecting rod slider structure. Thus, the connection between the second fixed frame 22 and the base 10 is achieved through the connecting rod structure and the connecting rod slider structure. With this architecture, the rotation mechanism 100 has a small number of parts, simple mating relationships and mating positions, and easy manufacturing and assembly of the components, which is conducive to mass production.

[0107] Furthermore, the second main swing arm 32 can serve as the main swing arm driving the second fixed frame 22, while the second synchronous swing arm 62 can serve as the secondary swing arm driving the second fixed frame 22. This allows the second fixed frame 22 to be driven by both swing arms and rotate relative to the base 10. In other words, when the second fixed frame 22 rotates relative to the base 10, it can drive the second main swing arm 32 to rotate relative to the base 10, as well as the second synchronous swing arm 62 to rotate relative to the base 10 and slide relative to the second fixed frame 22. With this arrangement, the second fixed frame 22 in the rotation mechanism 100 is driven by both swing arms (the second main swing arm 32 as the main swing arm and the second synchronous swing arm 62 as the secondary swing arm). This reduces the number of components and simplifies the mating relationships and positions, resulting in a better rotational performance. This better rotational performance prevents compression of the flexible display 300 during rotation, thereby reducing screen stress on the flexible display 300 during rotation.

[0108] In one possible implementation, Figure 7 As shown, the second main swing arm 32 has a rotation center, and the rotation center of the second main swing arm 32 is the third axis. The orthographic projection of the third axis on the base 10 is the third projection A3. The rotation center (third axis) of the second main swing arm 32 is the rotation center of the second main swing arm 32 and the base 10, which can be understood as a straight line around which the second main swing arm 32 can rotate within an angle range of 0° to 90° relative to the base 10. The second synchronous swing arm 62 has a rotation center, and the rotation center of the second synchronous swing arm 62 is the fourth axis. The orthographic projection of the fourth axis on the base 10 is the fourth projection A4. The rotation center (fourth axis) of the second synchronous swing arm 62 is the rotation center of the second synchronous swing arm 62 and the base 10, which can be understood as a straight line around which the second synchronous swing arm 62 can rotate within an angle range of 0° to 90° relative to the base 10.

[0109] In this embodiment, the orthographic projection of the third axis on the base 10 is offset from the orthographic projection of the fourth axis on the base 10. That is, the orthographic projection of the third axis on the base 10 and the orthographic projection of the fourth axis on the base 10 are not collinear, and are offset due to a distance difference between them. Consequently, when the second main swing arm 32 and the second synchronous swing arm 62 rotate relative to the base 10, the second main swing arm 32 rotates ahead of the second synchronous swing arm 62, while the second synchronous swing arm 62 rotates behind the second main swing arm 32, resulting in a phase difference between the two rotations.

[0110] Therefore, by utilizing the phase difference principle in which the third axis and the fourth axis are staggered to produce a phase difference in the rotation between the two, the second main swing arm 32 and the second synchronous swing arm 62 rotate out of the center during their rotation, thereby enabling the second synchronous swing arm 62 to slide relative to the second fixed frame 22 during the rotation of the second main swing arm 32 relative to the second fixed frame 22.

[0111] Please refer to Figure 11 and Figure 12 In the embodiment of the present application, the rotation mechanism 100 controls the motion trajectories of the first fixing frame 21 and the first housing 210 via the first main swing arm 31 and the first synchronous swing arm 61, and controls the motion trajectories of the second fixing frame 22 and the second housing 220 via the second main swing arm 32 and the second synchronous swing arm 62. Thus, during the relative folding process of the first housing 210 and the second housing 220, the first fixing frame 21 drives the first housing 210, and the second fixing frame 22 drives the second housing 220 toward the base 10. During the relative unfolding process of the first housing 210 and the second housing 220, the first fixing frame 21 drives the first housing 210, and the second fixing frame 22 drives the second housing 220 toward the base 10. Furthermore, the shell of the electronic device 400 can be pulled inwards during the process of changing from a flattened state to a closed state, and the shell of the electronic device 400 can be pushed outwards during the process of changing from a closed state to a flattened state, so that the flexible display screen 300 can be deformed during the process of unfolding or folding the electronic device 400, thereby reducing the risk of pulling or squeezing the flexible display screen 300, protecting the flexible display screen 300, improving the reliability of the flexible display screen 300, and making the flexible display screen 300 and the electronic device 400 have a longer service life, which is beneficial to improving the user experience.

[0112] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A rotating mechanism, characterized in that: The rotating mechanism includes a base, a first main swing arm, a second main swing arm, a first fixing frame, a second fixing frame and a synchronization component; The first main swing arm and the second main swing arm are respectively located on opposite sides of the base, the first main swing arm is rotatably connected to the base, the first main swing arm is also rotatably connected to the first fixing frame, the second main swing arm is rotatably connected to the base, and the second main swing arm is also rotatably connected to the second fixing frame; The synchronous assembly includes a synchronous gear provided inside the base, a first synchronous swing arm and a second synchronous swing arm respectively located on opposite sides of the base, the first synchronous swing arm and the second synchronous swing arm are respectively connected to both sides of the synchronous gear, one end of the first synchronous swing arm is rotatably connected to the synchronous gear, the other end of the first synchronous swing arm is slidably connected to the first fixed frame, one end of the second synchronous swing arm is rotatably connected to the synchronous gear, and the other end of the second synchronous swing arm is slidably connected to the second fixed frame, the first synchronous swing arm can rotate relative to the base, and drives the second synchronous swing arm to rotate relative to the base through the synchronous gear; The first fixing frame is capable of rotating relative to the base to drive the first main swing arm to rotate relative to the base, and drive the first synchronous swing arm to rotate relative to the base and slide relative to the first fixing frame. The second fixing frame is capable of rotating relative to the base to drive the second main swing arm to rotate relative to the base, and drive the second synchronous swing arm to rotate relative to the base and slide relative to the second fixing frame. The rotation directions of the first fixing frame and the second fixing frame are opposite.

2. The rotating mechanism according to claim 1, wherein: The rotation center of the first main swing arm is a first axis, the rotation center of the first synchronous swing arm is a second axis, and the orthographic projection of the first axis on the base and the orthographic projection of the second axis on the base are staggered; The rotation center of the second main swing arm is the third axis, the rotation center of the second synchronous swing arm is the fourth axis, and the orthographic projection of the third axis on the base and the orthographic projection of the fourth axis on the base are staggered.

3. The rotating mechanism according to any one of claims 1 or 2, characterized in that: The rotating mechanism further includes a first pressing plate and a second pressing plate; The first pressing plate is rotatably connected to the first fixing frame, and the first pressing plate can be driven to rotate relative to the base by the rotation of the first fixing frame relative to the base; The second pressing plate is rotatably connected to the second fixing frame, and the second pressing plate can be driven to rotate relative to the base by the rotation of the second fixing frame relative to the base.

4. The rotating mechanism according to claim 3, wherein: The first pressing plate includes a first plate body and a first sliding body provided on the first plate body, the first fixing frame is provided with a first guide groove, and the first sliding body is slidably connected to the first guide groove; The second pressing plate includes a second plate body and a second sliding body provided on the second plate body. The second fixing frame is provided with a second guide groove, and the second sliding body is slidably connected to the second guide groove.

5. The rotating mechanism according to claim 3, wherein: The rotating mechanism further includes a first auxiliary swing arm and a second auxiliary swing arm, wherein the first auxiliary swing arm and the second auxiliary swing arm are respectively located on opposite sides of the base; The first auxiliary swing arm is rotatably connected to the base, and the first auxiliary swing arm is also rotatably connected to the first pressure plate. The first pressure plate can rotate relative to the base and drive the first auxiliary swing arm to rotate relative to the base and slide relative to the first pressure plate. The second auxiliary swing arm is rotatably connected to the base, and the second auxiliary swing arm is also rotatably connected to the second pressure plate. The second pressure plate can rotate relative to the base and drive the second auxiliary swing arm to rotate relative to the base and slide relative to the second pressure plate.

6. The rotating mechanism according to claim 5, wherein: The first auxiliary swing arm includes a first rotating end, and the rotating mechanism further includes a first shaft, the first shaft is passed through the first rotating end, and an end of the first shaft extends out of the first rotating end and is connected to the base; The second auxiliary swing arm includes a second rotating end, and the rotating mechanism also includes a second shaft body. The second shaft body is passed through the second rotating end, and an end of the second shaft body extends out of the second rotating end and is connected to the base.

7. The rotating mechanism according to any one of claims 5 or 6, characterized in that: The first pressure plate includes a first plate body and a first slideway provided on the first plate body, and the first auxiliary swing arm further includes a first sliding end, and the first sliding end is slidably connected to the first slideway; The second pressure plate includes a second plate body and a second slideway provided on the second plate body. The second auxiliary swing arm also includes a second sliding end, and the second sliding end is slidably connected to the second slideway.

8. The rotating mechanism according to claim 1, wherein: A first sliding groove is provided on the first fixing frame, and the other end of the first synchronous swing arm is slidably connected to the first sliding groove; The second fixing frame is provided with a second sliding groove, and the other end of the second synchronous swing arm is slidably connected to the second sliding groove.

9. An electronic device, characterized in that: The electronic device includes a first shell, a second shell, and the rotation mechanism according to any one of claims 1 to 8, wherein the rotation mechanism is connected between the first shell and the second shell.

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