Rotating mechanism and foldable electronic device

Abstract

The present application provides a rotating mechanism and a foldable electronic device. The rotating mechanism includes a fixed base, a first synchronous swing arm, a second synchronous swing arm, a first hinge and a damping member. The first synchronous swing arm and the second synchronous swing arm are rotatably connected to the fixed base. The first hinge is fixedly connected to the first synchronous swing arm. The magnetic spring of the damping member is fixedly connected to the first baffle and the fixed base, the damping member is mounted on the fixed base, the first baffle is hinged to the first hinge, the magnetic spring has a magnetic repulsive force, and the direction of the magnetic repulsive force is consistent with the elastic extension direction of the magnetic spring. The rotation of the first synchronous swing arm can drive the first hinge to rotate, so that the first hinge resists the first baffle and compresses the magnetic spring, so that the magnetic spring generates an elastic restoring force and increases the magnetic repulsive force. The rotating mechanism provided by the present application can solve the technical problems of low damping and weak damping feel provided by the existing rotating mechanism.

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] With the development of science and technology, the appearance (ID) of electronic devices (such as mobile phones, tablet computers, etc.) has a trend of developing from straight-screen phones to folding phones. Folding phones have a large screen in the open state, which fully satisfies the visual experience of consumers. In the closed state, they are small in size and easy to carry. Most of the rotating mechanisms in the prior art use the mechanical force of the spring to provide damping force to enhance the damping feel when the user uses it. However, the strength of ordinary springs is small, the damping force provided is small, and the damping feel is weak, resulting in a poor user experience. In addition, in order to achieve a certain damping feel in the prior art, it is necessary to increase the number of springs or the length of the springs. However, this will increase the number of parts of the rotating mechanism and the space occupied, and increase the complexity of the rotating mechanism structure. Summary of the Invention

[0003] The present application provides a rotating mechanism and a foldable electronic device to solve the technical problems in the prior art that the rotating mechanism provides low damping and weak damping feel.

[0004] In a first aspect, the present application provides a rotation mechanism comprising: a fixed base, a first synchronous swing arm, a second synchronous swing arm, a first hinge, and a damping member. The first synchronous swing arm and the second synchronous swing arm are respectively mounted on opposite sides of the fixed base in the width direction and are rotatably connected to the fixed base. The first hinge is fixedly connected to the first synchronous swing arm. The damping member comprises a first baffle and a magnetic spring, the magnetic spring being fixedly connected to the first baffle and the fixed base, the damping member being mounted on the fixed base, the first baffle being hinged to the first hinge, the magnetic spring having a magnetic repulsive force, the direction of the magnetic repulsive force being consistent with the elastic extension direction of the magnetic spring. The rotation of the first synchronous swing arm can drive the first hinge to rotate, so that the first hinge abuts against the first baffle and compresses the magnetic spring, causing the magnetic spring to generate an elastic restoring force and increasing the magnetic repulsive force.

[0005] A rotation mechanism is used in a foldable electronic device, which includes a first housing, a second housing, and a display screen. The first housing is connected to a first synchronous swing arm, and the second housing is connected to a second synchronous swing arm. The rotation mechanism is located between the first and second housings and rotatably connects them. Rotation of the rotation mechanism drives relative rotation of the first and second housings. The first and second housings also have accommodating slots for accommodating electronic components and structural elements of the electronic device, such as the processor, circuit board, and camera module. When the rotation mechanism is in the folded state, the first and second synchronous swing arms fold relative to each other. When the rotation mechanism is in the flattened state, the first and second synchronous swing arms flatten relative to a fixed base, with the angle between the first and second synchronous swing arms approaching 180 degrees. When the foldable electronic device is in the folded state, the display screen bends. When the foldable electronic device is in the flattened state, the display screen unfolds, providing a large display area, enabling a large-screen display and improving the user experience.

[0006] In this embodiment, a damping member is provided, and when the first synchronous swing arm rotates, the first hinge member abuts against the damping member, causing the damping member to generate an elastic restoring force and increasing the magnetic repulsive force of the magnetic spring. This provides a damping force for the rotation of the first and second synchronous swing arms, thereby preventing the first and second synchronous swing arms from rotating, and providing a damping feel for the user. It will be understood that the damping force provided by the damping member is the combined force of the elastic restoring force and the magnetic repulsive force.

[0007] Furthermore, in this embodiment, a magnetic spring is provided in the damping element, and the magnetic elasticity exerts both elastic force and magnetic repulsive force when squeezed. That is, the damping force provided by the damping element for the rotating mechanism is the combined force of the magnetic repulsive force and the elastic restoring force. This increases the damping force provided by a single magnetic spring. While maintaining the same damping force achievable by the rotating mechanism, the number of magnetic springs can be reduced, thereby simplifying the structure of the rotating mechanism and reducing the assembly difficulty, weight, and cost of the rotating mechanism. This also helps reduce the thickness of the rotating mechanism, enabling the thinning and lightweight of foldable electronic devices. Furthermore, in the compressed state of the magnetic spring provided in this embodiment, there is a magnetic repulsive force between two adjacent turns of the magnetic coil. Therefore, the damping force provided by the magnetic spring per unit compression is increased, thereby shortening the length of the magnetic spring and, in turn, saving space near the damping element. In other words, the space occupied by the entire damping element is reduced.

[0008] In one embodiment, the direction of the magnetic repulsive force of the magnetic spring is opposite to the compression direction of the magnetic spring.

[0009] In this embodiment, the direction of the magnetic repulsion force of the magnetic spring is opposite to the direction of the magnetic spring's compression. In other words, the direction of the magnetic repulsion force is the same as the direction of the elastic restoring force. In other words, the damping force provided by the damping element to the rotating mechanism is the combined force of the magnetic repulsion force and the elastic restoring force, thereby increasing the damping force and improving the damping feel of the rotating mechanism.

[0010] In one embodiment, the magnetic spring includes a magnetic coil wound with multiple turns, and the magnetic spring includes a first magnetic portion and a second magnetic portion, the first magnetic portion and the second magnetic portion are respectively located on opposite sides of an axial cross-section of the magnetic spring, and the polarity of the first magnetic portion and the second magnetic portion are opposite, the part of the magnetic coil located in the first magnetic portion has the same polarity, and the other part of the magnetic coil is located in the second magnetic portion and has the same polarity; the axial cross-section is a plane passing through the axis of the magnetic spring.

[0011] In this embodiment, the portion of the magnetic coil located in the first magnetic portion is all N-pole, and a magnetic repulsive force exists between two adjacent magnetic coils within the first magnetic portion. Furthermore, the smaller the distance between the two adjacent coils, the greater the magnetic repulsive force between them. The portion of the magnetic coil located in the second magnetic portion is all S-pole, and a magnetic repulsive force exists between two adjacent magnetic coils within the second magnetic portion. Furthermore, the smaller the distance between the two adjacent coils, the greater the magnetic repulsive force between them. It can be understood that when force F1 is applied to compress the magnetic spring, the magnetic spring is compressed, the distance between the two adjacent magnetic coils decreases, and the magnetic repulsive force between the two adjacent coils increases. The magnetic spring has both elastic restoring force and magnetic repulsive force, and the directions of the elastic restoring force and magnetic repulsive force are opposite to the direction of force F1. Furthermore, by providing the first and second magnetic portions on the magnetic coil, the direction of the magnetic repulsive force of the magnetic spring is the same as the direction of the elastic restoring force. In other words, the damping force provided by the damping element to the rotating mechanism is the combined force of the magnetic repulsive force and the elastic restoring force, thereby increasing the damping force and improving the damping feel of the rotating mechanism.

[0012] In one embodiment, the first hinge includes a plurality of alternating protrusions and recesses, and the first baffle is provided with a first hinge seat matching the first hinge; the protrusion of the first hinge is located in the recess of the first hinge seat, and the protrusion of the first hinge seat is located in the recess of the first hinge, so that the first synchronous swing arm is positioned relative to the fixed base; the first hinge rotates relative to the first hinge seat, and the protrusion of the first hinge resists the protrusion of the first hinge seat, so that the first hinge seat moves away from the first hinge and compresses the magnetic spring.

[0013] When the rotating mechanism is in the folded and flattened states, the protrusion of the first hinge member is located within the recess of the first hinge seat, and the protrusion of the first hinge seat is located within the recess of the first hinge member. In this embodiment, during the rotation of the first synchronous swing arm, the magnetic spring is repeatedly compressed, causing its magnetic repulsion force and elastic restoring force to continuously change, thereby continuously changing the damping force provided by the damping member. When the rotating mechanism rotates to the folded and flattened states, the damping force provided by the damping member is minimized, and the user can perceive the change in damping force, thereby providing a locked feeling when the device is fully flattened and fully folded. Furthermore, during the rotation of the rotating mechanism, the protrusion of the first hinge member abuts against the protrusion of the first hinge seat, causing the first baffle to compress the magnetic spring, thereby generating an elastic restoring force and a magnetic repulsive force. This provides a damping force for the rotation of the first and second damping swing arms, thereby improving the damping feel of the rotating mechanism and enhancing the user experience.

[0014] In one embodiment, the rotating mechanism includes a flattened state, a folded state, and an intermediate state; when the rotating mechanism is in the folded state and the flattened state, the magnetic spring is in a pre-compression state, and the magnetic spring has a first magnetic repulsion force; when the rotating mechanism is in the intermediate state, the magnetic spring is in a compressed state, and the magnetic spring has a second magnetic repulsion force; the first magnetic repulsion force is smaller than the second magnetic repulsion force.

[0015] In this embodiment, when the rotating mechanism is in the folded state and the flattened state, the magnetic spring is in a pre-compressed state, and its elastic restoring force and magnetic repulsive force are relatively small, that is, the damping force provided by the damping member for the rotating mechanism is relatively small. When the rotating mechanism is in the intermediate state, that is, when the protrusion of the first hinge member abuts against the protrusion of the first hinge seat, the compression of the magnetic spring is the largest, and the elastic restoring force and magnetic repulsive force are relatively large, that is, the damping force provided by the damping member for the rotating mechanism is relatively large. It is understandable that the damping force provided by the damping member changes continuously during the rotation of the rotating mechanism. When the rotating mechanism rotates to the folded state and the flattened state, the damping force provided by the damping member is the smallest, and the user can perceive the change in the damping force, thereby providing the user with a locking feeling when the mechanism is flattened into place and a locking feeling when the mechanism is folded into place.

[0016] In one embodiment, the rotation mechanism also includes a synchronous gear, which includes a first gear, an intermediate gear and a second gear. The intermediate gear is located between the first gear and the second gear and is engaged with the first gear and the second gear. The first synchronous swing arm is fixedly connected to the first gear, and the second synchronous swing arm is fixedly connected to the second gear. The rotation directions of the first gear and the second gear are opposite.

[0017] When the first synchronous swing arm rotates, it can drive the first gear to rotate, and drive the second gear to rotate through the intermediate gear, thereby driving the second synchronous swing arm to rotate. In this embodiment, by providing synchronous gears, the first synchronous swing arm and the second synchronous swing arm can be rotated synchronously.

[0018] In one embodiment, the rotating mechanism also includes a second hinge, which is fixedly connected to the second synchronous swing arm, and the first baffle is hinged to the second hinge; the rotation of the second synchronous swing arm can drive the second hinge to rotate, and make the second hinge resist the first baffle to compress the magnetic spring and make the magnetic spring generate elastic restoring force and magnetic repulsion force.

[0019] In this embodiment, a second hinge is provided, and when the second synchronous swing arm rotates, the second hinge is driven to rotate at the same time, and the second hinge is pressed against the first baffle, and the magnetic spring is compressed, so that the magnetic spring generates elastic force and magnetic repulsion force, thereby providing damping force for the rotation of the second synchronous swing arm to prevent the rotation of the second synchronous swing arm, thereby providing a damping feel for the user.

[0020] In one embodiment, the second hinge includes a plurality of alternating protrusions and recesses, the first baffle is provided with a second hinge seat matching the second hinge, and the second hinge seat and the first hinge seat are arranged side by side and spaced apart; the protrusion of the second hinge is located in the recess of the second hinge seat, and the protrusion of the second hinge seat is located in the recess of the second hinge, so that the second synchronous swing arm is positioned relative to the fixed base; the second hinge rotates relative to the second hinge seat, and the protrusion of the second hinge presses against the protrusion of the second hinge seat, so that the second hinge seat moves away from the second hinge and compresses the magnetic spring.

[0021] When the rotating mechanism is in a folded state and a flattened state, the protrusion of the second hinge is located in the recess of the second hinge seat, and the protrusion of the second hinge seat is located in the recess of the second hinge. In this embodiment, when the first synchronous swing arm rotates, the second synchronous swing arm is driven to rotate by the synchronous gear, and the first hinge and the second hinge jointly resist the first baffle, and the magnetic spring is repeatedly compressed, thereby increasing the force acting on the first baffle, thereby increasing the compression amount of the magnetic spring, and further increasing the elastic force and magnetic repulsion force of the magnetic spring, that is, further improving the damping feel of the rotating mechanism. In addition, by providing a second hinge spaced apart from the first hinge, the force acting on the first baffle can be balanced, thereby increasing the stability of the movement of the first baffle and further increasing the stability of the rotation of the rotating mechanism.

[0022] In one embodiment, the rotating mechanism includes a first fixed plate and a second fixed plate, the first fixed plate and the second fixed plate are respectively located on opposite sides of the width direction of the fixed base, and the first fixed plate is slidingly connected to the first synchronous swing arm, and the second fixed plate is slidingly connected to the second synchronous swing arm.

[0023] The first fixing plate is fixedly connected to the first housing of the foldable electronic device, and the second fixing plate is fixedly connected to the second housing of the foldable electronic device. When the first housing rotates relative to the fixed base, it drives the first fixing plate to rotate, thereby driving the first synchronous swing arm to rotate. This in turn drives the second synchronous swing arm to rotate relative to the fixed base via the synchronous gear, thereby driving the second synchronous swing arm to rotate the second housing relative to the fixed base, thereby achieving the folding or unfolding of the rotating mechanism, thereby ensuring the stability of the rotating mechanism and the foldable electronic device.

[0024] In one embodiment, the fixed base is provided with a first rotation groove and a second rotation groove, the first rotation groove and the second rotation groove being arranged opposite to each other; the rotation mechanism includes a first main swing arm and a second main swing arm, the first main swing arm being mounted in the first rotation groove and being able to slide along the first rotation groove, and the first main swing arm being connected to the first fixed plate; the second main swing arm being mounted in the second rotation groove and being able to slide along the second rotation groove, and the second main swing arm being connected to the second fixed plate. When the first fixed plate rotates relative to the fixed base, it can drive the first main swing arm to rotate relative to the fixed base; when the second fixed plate rotates relative to the fixed base, it can drive the second main swing arm to rotate relative to the fixed base.

[0025] In this embodiment, by providing a first main swing arm and fixedly connecting it to the first fixing plate, rotation of the first fixing plate relative to the fixed base can drive the first main swing arm to rotate relative to the fixed base. By providing a second main swing arm and fixedly connecting it to the second fixing plate, rotation of the second fixing plate relative to the fixed base can drive the second main swing arm to rotate relative to the fixed base, further improving the stability of the rotation mechanism and the rotation of the foldable electronic device.

[0026] In the second aspect, the present application also provides a foldable electronic device, comprising a first shell, a second shell, a display screen and the above-mentioned rotating mechanism, wherein the rotating mechanism is connected between the first shell and the second shell, and the display screen is installed on the first shell, the second shell and the rotating mechanism. When the rotating mechanism rotates, the first shell and the second shell rotate relative to each other, thereby driving the display screen to bend or unfold.

[0027] 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.

[0028] In summary, the rotation mechanism provided by the present application has an elastic force and a magnetic repulsive force when the magnetic spring is squeezed by arranging a magnetic spring in the damping member. That is, the damping force provided by the damping member to the rotation mechanism is the combined force of the magnetic repulsive force and the elastic restoring force. This increases the damping force provided by a single magnetic spring. Under the condition that the damping force that can be achieved by the rotation mechanism is the same, the number of magnetic springs can be reduced, thereby simplifying the structure of the rotation mechanism and reducing the assembly difficulty, weight and cost of the rotation mechanism. At the same time, it is also beneficial to reduce the thickness of the rotation mechanism and realize the lightweight and thinness of foldable electronic devices. In addition, when the magnetic spring provided by this embodiment is in a compressed state, there is a magnetic repulsive force between two adjacent turns of the magnetic coil. Therefore, the damping force provided by the magnetic spring per unit compression amount is increased, thereby shortening the length of the magnetic spring, thereby saving space near the damping member, that is, the space occupied by the entire damping member is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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.

[0030] Figure 1 is a schematic structural diagram of a foldable electronic device provided by an embodiment of the present application in a first state;

[0031] Figure 2 is a schematic structural diagram of a foldable electronic device provided by an embodiment of the present application in a second state;

[0032] Figure 3 is a schematic structural diagram of a foldable electronic device in a third state provided by an embodiment of the present application;

[0033] Figure 4 yes Figure 3 A schematic diagram of the exploded structure of the foldable electronic device shown;

[0034] Figure 5 yes Figure 4 A schematic diagram of a portion of the structure of a rotating mechanism in a foldable electronic device;

[0035] Figure 6 yes Figure 5 Schematic diagram of the exploded structure of the rotating mechanism shown;

[0036] Figure 7 yes Figure 6A schematic diagram of a portion of the structure of the fixed base in the rotating mechanism shown;

[0037] Figure 8 yes Figure 6 An enlarged structural diagram of the first fixed plate and the second fixed plate in the rotating mechanism shown;

[0038] Figure 9 yes Figure 6 An enlarged structural diagram of the first main swing arm and the second main swing arm in the rotating mechanism shown;

[0039] Figure 10 yes Figure 5 A partial structural diagram of the rotating mechanism shown;

[0040] Figure 11 yes Figure 5 A schematic structural diagram of a synchronization component in the rotating mechanism shown;

[0041] Figure 12 yes Figure 11 A schematic diagram of the decomposed structure of the synchronization component shown;

[0042] Figure 13 yes Figure 12 Schematic diagram of the enlarged structure of the magnetic spring;

[0043] Figure 14 yes Figure 5 A partial structural diagram of the rotating mechanism shown;

[0044] Figure 15 yes Figure 5 A cross-sectional view of the rotating mechanism shown;

[0045] Figure 16 yes Figure 5 A schematic diagram of a portion of the structure of the rotating mechanism shown in a flattened state;

[0046] Figure 17 yes Figure 5 A schematic diagram of a portion of the structure of the rotating mechanism shown is in a first intermediate state;

[0047] Figure 18 yes Figure 5 A schematic diagram of a portion of the structure of the rotating mechanism shown in the second intermediate state;

[0048] Figure 19 yes Figure 5 Schematic diagram of the partial structure of the rotating mechanism in the folded state. DETAILED DESCRIPTION

[0049] With the development of science and technology, the appearance (ID) of electronic devices (such as mobile phones, tablet computers, etc.) has a trend of developing from straight-screen phones to folding phones. Folding phones have a large screen in the open state, which fully satisfies the visual experience of consumers. In the closed state, they are small in size and easy to carry. Most of the rotating mechanisms in the prior art use the mechanical force of the spring to provide damping force to enhance the damping feel when the user uses it. However, the strength of ordinary springs is small, the damping force provided is small, and the damping feel is weak, resulting in a poor user experience. In addition, in order to achieve a certain damping feel in the prior art, it is necessary to increase the number of springs or the length of the springs. However, this will increase the number of parts of the rotating mechanism and the space occupied, and increase the complexity of the rotating mechanism structure.

[0050] The rotation mechanism provided in this application utilizes a magnetic spring in the damping element. When the magnetic spring is squeezed, it exerts both elastic force and magnetic repulsive force, thereby enhancing the damping force and damping feel provided by the rotation mechanism, thereby improving the user experience. Furthermore, the structure of the rotation mechanism can be simplified, enabling a thinner and lighter foldable electronic device.

[0051] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0052] See also Figures 1 to 3 , Figure 1 is a structural diagram of a foldable electronic device 500 provided in an embodiment of the present application in a first state, Figure 2 is a structural diagram of the foldable electronic device 500 provided in an embodiment of the present application in the second state, Figure 3 3 is a schematic structural diagram of the foldable electronic device 500 provided in an embodiment of the present application in the third state.

[0053] For ease of description, the width direction of the foldable electronic device 500 is defined as the X direction, the length direction of the foldable electronic device 500 is defined as the Y direction, and the thickness direction of the foldable electronic device 500 is defined as the Z direction. The X direction, the Y direction, and the Z direction are perpendicular to each other.

[0054] The foldable electronic device 500 includes, but is not limited to, a cell phone, a notebook computer, a tablet personal computer, a laptop computer, a personal digital assistant, a wearable device, or a mobile device. In the embodiments of the present application, the foldable electronic device 500 is described as a cell phone.

[0055] Figure 1 The foldable electronic device 500 is shown in a folded state. Figure 2 The foldable electronic device 500 is shown in a semi-expanded state. Figure 3 The foldable electronic device 500 is shown in a flattened state. Figure 2 The unfolding angle α of the foldable electronic device 500 is 90 degrees. Figure 3 The unfolding angle β of the foldable electronic device 500 is shown to be 180 degrees.

[0056] 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 foldable electronic device 500 shown is 90 degrees, which means that α can be 90 degrees or approximately 90 degrees, such as 80 degrees, 85 degrees, 95 degrees or 100 degrees. Figure 3 The unfolding angle β of the foldable electronic device 500 shown is 180 degrees, which means that β can be 180 degrees or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees. The angles described below as examples can be understood in the same way.

[0057] The foldable electronic device 500 shown in the embodiment of the present application is an electronic device that can be folded once. In other embodiments, the foldable electronic device 500 can also be an electronic device that can be folded multiple times (more than twice). In this case, the foldable electronic device 500 can include multiple parts, where two adjacent parts can be folded relatively close together until the foldable electronic device 500 is in a folded state, and two adjacent parts can be unfolded relatively far apart until the foldable electronic device 500 is in a flat state.

[0058] See also Figure 4 , Figure 4 yes Figure 3 A schematic diagram of a partially exploded structure of a foldable electronic device 500 is shown.

[0059] The foldable electronic device 500 includes a folding device 200 and a display screen 300, which is mounted on the folding device 200. The display screen 300 includes a display surface 340 and a mounting surface 350, which are arranged opposite to each other. The display surface 340 is used to display text, images, and videos. The display screen 300 includes a first portion 310, a second portion 320, and a foldable portion 330. The foldable portion 330 is located between the first portion 310 and the second portion 320, and the foldable portion 330 can be bent along the Y direction. The first portion 310, the second portion 320, and the foldable portion 330 together constitute the display screen 300. In this embodiment, the display screen 300 uses a flexible display screen, for example, an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MLED) display screen, or a quantum dot light-emitting diode (QLED) display screen.

[0060] The folding device 200 includes a first housing 210, a second housing 220, and a rotating mechanism 100. The first housing 210 is provided with a first 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 rotating mechanism 100 is mounted in the mounting slot and fixedly connected to the first housing 210 and the second housing 220 to achieve a rotational connection between the first and second housings 210, 220. The display screen 300 is mounted on the folding device 200, and the mounting surface 350 is fixedly connected to the folding device 200. Specifically, the first housing 210 supports the first portion 310 of the display screen 300, and the second housing 220 supports the second portion 320. In other words, the first portion 310 is mounted on the first housing 210, and the second portion 320 is mounted on the second housing 220. The rotating mechanism 100 is disposed opposite the foldable portion 330. The first shell 210 and the second shell 220 can rotate relative to each other through the rotating mechanism 100, so that the folding device 200 can switch between the folded state and the flattened state.

[0061] Combine Figure 1The first housing 210 and the second housing 220 rotate relative to each other via the rotation mechanism 100. As the first housing 210 and the second housing 220 approach each other, the display screen 300 folds, thereby folding the foldable electronic device 500. When the foldable electronic device 500 is in the folded state, the foldable portion 330 of the display screen 300 bends, and the first portion 310 and the second portion 320 are positioned relative to each other. At this point, the display screen 300 is located between the first housing 210 and the second housing 220, significantly reducing the probability of damage to the display screen 300 and effectively protecting the display screen 300.

[0062] Please also refer to Figure 2 and Figure 4 The first shell 210 and the second shell 220 rotate relative to each other via the rotating mechanism 100, and the first shell 210 and the second shell 220 move away from each other, driving the display screen 300 to unfold, so that the foldable electronic device 500 is unfolded to a semi-expanded state. When the foldable electronic device 500 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 90 degrees. In other embodiments, α may also be approximately 90 degrees, or may be 80 degrees, 85 degrees, 95 degrees, or 100 degrees, etc.

[0063] Please also refer to Figure 3 and Figure 4 The first housing 210 and the second housing 220 rotate relative to each other via the rotating mechanism 100. As the first housing 210 and the second housing 220 move away from each other, the display screen 300 further unfolds until the foldable electronic device 500 unfolds. When the folding device 200 is in the flattened state, the angle between the first housing 210 and the second housing 220 is β. The foldable portion 330 unfolds, and the first portion 310 and the second portion 320 unfold relative to each other. At this point, the angles between the first portion 310, the second portion 320, and the foldable portion 330 are all β. The display screen 300 has a large display area, enabling a large-screen display of the foldable electronic device 500 and improving the user experience. In this embodiment, β is 180 degrees. In other embodiments, β may also be approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, or 190 degrees.

[0064] It should be noted that angles α and β are both the angles between the first housing 210 and the second housing 220. These angles are used to distinguish the angles between the first housing 210 and the second housing 220 in different states of the foldable electronic device 500. Angle α refers to the angle between the first housing 210 and the second housing 220 when the foldable electronic device 500 is in the semi-expanded state; angle β refers to the angle between the first housing 210 and the second housing 220 when the foldable electronic device 500 is in the flattened state.

[0065] See also Figure 5 and Figure 6 , Figure 5 yes Figure 4 A partial structural diagram of the rotating mechanism 100 in the foldable electronic device 500 is shown. Figure 6 yes Figure 5 Schematic diagram of the exploded structure of the rotating mechanism 100 is shown.

[0066] The rotating mechanism 100 includes a fixed base 10, a fixed plate 20, a main swing arm 30, and a synchronization assembly 40. The main swing arm 30 and the synchronization assembly 40 are arranged at intervals along the length of the fixed base 10 and are rotationally connected to the fixed base 10. The fixed plate 20 is fixedly connected to the main swing arm 30, and the fixed plate 20 is slidably connected to the synchronization assembly 40. The foldable portion 330 of the display screen 300 is arranged opposite to the main swing arm 30 and the fixed plate 20. When the fixed plate 20 rotates relative to the fixed base 10, it drives the main swing arm 30 and the synchronization assembly 40 to rotate relative to the fixed base 10, thereby rotating the rotating mechanism 100 to achieve bending of the display screen 300.

[0067] It should be noted that Figure 5 and Figure 6 Only part of the structure in the positive direction of the Y-axis of the rotating mechanism 100 is shown. The fixed plate 20, the main swing arm 30 and the synchronization component 40 are a group of substructures. The entire rotating mechanism 100 has at least two groups of the above-mentioned substructures, and the fixed base 10 is provided with a group of the said substructures at both opposite ends in the Y-direction. That is, one end of the fixed base 10 is provided with a fixed plate 20, the main swing arm 30 and the synchronization component 40, and the other end of the fixed base 10 is also provided with a fixed plate 20, the main swing arm 30 and the synchronization component 40. In order to enhance the stability of the entire rotating mechanism 100, an additional group of the above-mentioned substructures is further provided between the substructures at both ends of the fixed base 10, and the substructure is located in the middle of the fixed base 10. In order to further enhance the stability of the entire rotating mechanism 100, two groups of the said substructures can also be added between the substructures at both ends of the fixed base 10. The number of the said substructures can be adjusted according to actual conditions. In one embodiment, the fixing plates 20 of the two groups of the above-mentioned substructures can be integrally formed, that is, the main swing arms 30 and the synchronization components 40 of the two groups of substructures are connected to the same fixing plate 20.

[0068] In one set of the above-mentioned substructures, the fixed plate 20 includes a first fixed plate 21 and a second fixed plate 22. The main swing arm 30 includes a first main swing arm 31 and a second main swing arm 32. The first main swing arm 31 and the first fixed plate 21 are mounted on one side of the fixed base 10, and the second main swing arm 32 and the second fixed plate 22 are mounted on the other side of the fixed base 10. One end of the first main swing arm 31 is rotatably and slidably connected to the fixed base 10, and the other end of the first main swing arm 31 is fixedly connected to the first fixed plate 21. When the first fixed plate 21 rotates relative to the fixed base 10, it drives the first main swing arm 31 to rotate relative to the fixed base 10. One end of the second main swing arm 32 is rotatably and slidably connected to the fixed base 10, and the other end of the first main swing arm 31 is fixedly connected to the second fixed plate 22. When the second fixed plate 22 rotates relative to the fixed base 10, it drives the second main swing arm 32 to rotate relative to the fixed base 10. The synchronization assembly 40 includes a first synchronization swing arm 41 , a second synchronization swing arm 42 , a synchronization gear 43 and a damping member 2 .

[0069] See also Figure 7 , Figure 7 yes Figure 6 A schematic diagram of a portion of the structure of the fixed base 10 in the rotating mechanism 100 is shown.

[0070] The fixed base 10 is in the shape of an elongated strip, and the length direction of the fixed base 10 is parallel to the Y direction. The fixed base 10 includes a bottom plate 11, a first side plate 12, a second side plate 13, a first end plate 14 and a second end plate (not shown). The first side plate 12 and the second side plate 13 are arranged opposite to each other, and the first side plate 12 and the second side plate 13 are respectively connected to the opposite sides of the bottom plate 11 in the X direction. The first end plate 14 and the second end plate are opposite to each other, and the first end plate 14 and the second end plate are both connected between the first side plate 12 and the second side plate 13, and are respectively connected to the opposite sides of the bottom plate 11 in the Y direction. In this embodiment, the first side plate 12 and the second side plate 13 are both arc-shaped, and the first side plate 12 and the second side plate 13 are bent in a direction close to each other.

[0071] The base plate 11 is provided with a first rotation groove 111 and a second rotation groove 112. The bottom walls of the first and second rotation grooves 111, 112 are both arc-shaped and extend parallel to the X-direction. The first and second rotation grooves 111, 112 are opposed to each other and spaced apart in the Y-direction. The first and second rotation grooves 111, 112 are used to mount the main swing arm 30, which can slide and rotate within the first and second rotation grooves 111, 112.

[0072] The fixed base 10 is further provided with a receiving groove 113. The receiving groove 113 is formed by the bottom plate 11, the first side plate 12, and the second side plate 13. The receiving groove 113 is spaced apart from the first rotation groove 111 and the second rotation groove 112. The receiving groove 113 is used to install the synchronization assembly 40.

[0073] It should be noted that Figure 7 Only a partial structure of the fixed base 10 in the positive direction of the Y axis is shown. The structure of the fixed base 10 in the negative direction of the Y axis and the structure in the positive direction of the Y axis are axisymmetric structures, or centrosymmetric structures.

[0074] See also Figure 8 , Figure 8 yes Figure 6 FIG. 1 is a schematic diagram of an enlarged structure of the first fixing plate 21 and the second fixing plate 22 in the rotating mechanism 100 .

[0075] The fixing plate 20 includes a first fixing plate 21 and a second fixing plate 22. The first fixing plate 21 is a rectangular plate structure. The first fixing plate 21 includes a first surface 211, a second surface 212, a first side surface 213 and a second side surface 214. The first side surface 213 and the second side surface 214 are arranged opposite to each other, and the first side surface 213 and the second side surface 214 are both parallel to the Y direction. Among them, the first side surface 213 is an arc-shaped surface for matching with the first side plate 12 of the fixed base 10. The first surface 211 and the second surface 212 are arranged opposite to each other, and the first surface 211 and the second surface 212 are both perpendicular to the Z direction. The first surface 211 and the second surface 212 are both connected between the first side surface 213 and the second side surface 214.

[0076] The first fixed plate 21 is provided with a first groove 215 and a first slide 216. The first groove 215 is recessed in the first surface 211 and extends through the first side surface 213. The first groove 215 is used to mount the main swing arm 30 so that the main swing arm 30 is fixedly connected to the first fixed plate 21. The first slide 216 is spaced apart from the first groove 215, and the length of the first slide 216 extends parallel to the X-direction. The opening of the first slide 216 is located on the first side surface 213 and extends through the first side surface 213. The first slide 216 is used to mount the synchronization assembly 40 so that the synchronization assembly 40 is slidably connected to the first fixed plate 21.

[0077] The structure of the second fixing plate 22 is identical to that of the first fixing plate 21. The second fixing plate 22 includes a third surface 221, a fourth surface 222, a third side surface 223, and a fourth side surface 224. The third side surface 223 and the fourth side surface 224 are disposed opposite each other and are both parallel to the Y-direction. The third side surface 223 is an arcuate surface designed to mate with the second side plate 13 of the fixed base 10. The third surface 221 and the fourth surface 222 are disposed opposite each other and are both perpendicular to the Z-direction. The second fixing plate 22 is provided with a second groove 225 and a second slide 226. The structure of the second groove 225 is identical to that of the first groove 215, and the structure of the second slide 226 is identical to that of the first slide 216. The second groove 225 is used to mount the main swing arm 30, thereby securing the main swing arm 30 to the second fixing plate 22. The second slide 226 is used to mount the synchronization assembly 40, thereby securing the synchronization assembly 40 to the second fixing plate 22.

[0078] See also Figure 9 , Figure 9 yes Figure 6 An enlarged structural diagram of the first main swing arm 31 and the second main swing arm 32 in the rotating mechanism 100 is shown.

[0079] The first main swing arm 31 includes a first swinging body 311 and a first rotating body 312. In this embodiment, the first swinging body 311 is a rectangular plate-like structure. The first swinging body 311 includes a first upper surface 3111, a first lower surface 3112, a first side surface 3113, and a second side surface 3114. The first upper surface 3111 and the first lower surface 3112 are both perpendicular to the Z direction, and the first upper surface 3111 and the first lower surface 3112 are arranged opposite to each other. In this embodiment, the first upper surface 3111 is a plane. The first side surface 3113 and the second side surface 3114 are both parallel to the Y direction, and the first side surface 3113 and the second side surface 3114 are arranged opposite to each other, and the first side surface 3113 and the second side surface 3114 are both connected between the first upper surface 3111 and the first lower surface 3112.

[0080] The first rotating body 312 includes a first rotating surface 3121. The first rotating surface 3121 is arc-shaped. The curvature of the first rotating surface 3121 is toward the first upper surface 3111, and the curvature of the first rotating surface 3121 is consistent with the curvature of the bottom wall of the first rotating groove 111. Of course, the curvature of the first rotating surface 3121 and the curvature of the bottom wall of the first rotating groove 111 can also be roughly the same. The first rotating body 312 also includes a first free end 3122 and a first connecting end (not marked in the figure), and the first free end 3122 and the first connecting end are respectively located at opposite ends of the extension direction of the first rotating surface 3121. The first connecting end is fixedly connected to the first lower surface 3112. The first free end 3122 is located on the side of the first side surface 3113 and faces the same direction as the first upper surface 3111.

[0081] The structure of the second main swing arm 32 is similar to that of the first main swing arm 31. The second main swing arm 32 includes a second swinging member 321 and a second rotating member 322. The structure of the second swinging member 321 is identical to that of the first swinging member 311. The second swinging member 321 includes a second upper surface 3211, a second lower surface 3212, a third side surface 3213, and a fourth side surface 3214. The structure of the second rotating member 322 is identical to that of the first rotating member 312. The second rotating member 322 includes a second rotating surface 3221, a second free end 3222, and a second connecting end. The structure of the second rotating surface 3221 is identical to that of the first rotating surface 3121, and the curvature of the second rotating surface 3221 is identical or substantially identical to the curvature of the bottom wall of the second rotating groove 112. The second connecting end is fixedly connected to the second lower surface 3212. The second free end 3222 extends from the third side surface 3213 away from the second rotating member 322, and the curvature of the second rotating surface 3221 is directed toward the second upper surface 3211. The position of the second rotating body 322 corresponds to the position of the second rotating groove 112 .

[0082] See also Figure 10 , Figure 10 yes Figure 5 A partial structural diagram of the rotating mechanism 100 is shown.

[0083] The first fixed plate 21 and the first main swing arm 31 are located on one side of the fixed base 10 in the X direction, while the second fixed plate 22 and the second main swing arm 32 are located on the other side of the fixed base 10 in the X direction. The first rotating member 312 of the first main swing arm 31 is located within the first rotation groove 111, with the first rotating surface 3121 contacting the bottom wall of the first rotation groove 111. The first rotating member 312 can slide and rotate within the first rotation groove 111. The first swing member 311 is mounted within the first groove 215 and fixedly connected to the inner wall of the first groove 215. The first fixed plate 21 is fixedly connected to the first housing 210. The second main swing arm 32 is offset from the first main swing arm 31 in the Y direction. The second rotating member 322 of the second main swing arm 32 is located within the second rotation groove 112, with the second rotating surface 3221 contacting the bottom wall of the second rotation groove 112. The second rotating member 322 can slide and rotate within the second rotation groove 112. The second swinging member 321 is mounted within the second groove 225 and fixedly connected to the inner wall of the second groove 225. The second fixing plate 22 is fixedly connected to the second housing 220. In this embodiment, the first main swing arm 31 and the second main swing arm 32 are offset in the Y direction. In other embodiments, the first main swing arm 31 and the second main swing arm 32 may also be arranged side by side in the X direction.

[0084] Rotation of the first housing 210 relative to the fixed base 10 drives the first fixed plate 21 to rotate relative to the fixed base 10, thereby driving the first main swing arm 31 to rotate relative to the fixed base 10 and causing the first rotating body 312 to rotate and slide within the first rotation groove 111. Rotation of the second housing 220 relative to the fixed base 10 drives the second fixed plate 22 to rotate relative to the fixed base 10, thereby driving the second main swing arm 32 to rotate relative to the fixed base 10 and causing the second rotating body 322 to rotate and slide within the second rotation groove 112. The rotation direction of the first fixed plate 21 is opposite to that of the second fixed plate 22, and the rotation direction of the first main swing arm 31 is opposite to that of the second main swing arm 32.

[0085] For example, when the rotating mechanism 100 switches from the flat state to the folded state, the first fixing plate 21 and the first main swing arm 31 rotate clockwise by ω2, while the second fixing plate 22 and the second main swing arm 32 rotate counterclockwise by ω1. When the rotating mechanism 100 switches from the folded state to the flat state, the first fixing plate 21 and the first main swing arm 31 rotate counterclockwise by ω1, while the second fixing plate 22 and the second main swing arm 32 rotate clockwise by ω2.

[0086] When the rotating mechanism 100 is in the flattened state, the first fixing plate 21 and the second fixing plate 22 are unfolded relative to the fixed base 10, and the first main swing arm 31 and the second main swing arm 32 are unfolded relative to the fixed base 10. The first upper surface 3111, the first surface 211, the second upper surface 3211, and the second surface 212 are substantially coplanar and jointly support the display screen 300, ensuring the stability of the display screen 300 and enabling normal display of the display screen 300.

[0087] The first fixed plate 21 and the second fixed plate 22 rotate toward each other. The first fixed plate 21 drives the first main swing arm 31 to rotate clockwise in the direction ω2, and the first rotating body 312 rotates clockwise in the direction ω2 within the first rotating groove 111. The second fixed plate 22 drives the second main swing arm 32 to rotate counterclockwise in the direction ω1, and the second rotating body 322 rotates counterclockwise in the direction ω1 within the second rotating groove 112, thereby placing the rotating mechanism 100 in the folded state. The first fixed plate 21 and the second fixed plate 22 rotate away from each other. The first fixed plate 21 drives the first main swing arm 31 to rotate counterclockwise in the direction ω1, and the first rotating body 312 rotates counterclockwise in the direction ω1 within the first rotating groove 111. The second fixed plate 22 drives the second main swing arm 32 to rotate clockwise in the direction ω2, and the second rotating body 322 rotates clockwise in the direction ω2 within the second rotating groove 112, thereby returning the rotating mechanism 100 to the flattened state.

[0088] In this embodiment, by providing a first fixing plate 21 and a second fixing plate 22, and by fixing the first fixing plate 21 to the first housing 210 and the second fixing plate 22 to the second housing 220, the connection strength between the fixing plate 20 and the housing is increased, thereby improving the rotational stability of the foldable electronic device 500. Furthermore, by providing a first main swing arm 31 and a second main swing arm 32, the first fixing plate 21 and the second fixing plate 22 are able to rotate relative to the fixed base 10, thereby improving the rotational stability of the rotating mechanism 100.

[0089] See also Figure 11 and Figure 12 , Figure 11 yes Figure 5 The schematic structural diagram of the synchronization component 40 in the rotating mechanism 100 is shown. Figure 12 yes Figure 11 A schematic diagram of the exploded structure of the synchronization component 40 is shown.

[0090] The synchronization assembly 40 includes a first synchronization swing arm 41, a second synchronization swing arm 42, a synchronization gear 43, an articulated member 1, and a damping member 2. The synchronization gear 43 is mounted on the fixed base 10. The first synchronization swing arm 41 and the second synchronization swing arm 42 are respectively connected to opposite sides of the synchronization gear 43 in the X direction. The first synchronization swing arm 41 is slidably connected to the first fixed plate 21, and the second synchronization swing arm 42 is slidably connected to the second fixed plate 22. The articulated member 1 is mounted on the side of the synchronization gear 43 and is fixedly connected to the synchronization gear 43. The damping member 2 is mounted on the fixed base 10 and is hingedly connected to the articulated member 1.

[0091] The synchronous gear 43 includes a first gear 431, an intermediate gear, and a second gear 432. The intermediate gear includes a third gear 433 and a fourth gear 434. The first gear 431, the second gear 432, the third gear 433, and the fourth gear 434 are all hollow structures. The first gear 431 has a first through-hole 4311 that axially extends through the first gear 431. The second gear 432 has a second through-hole 4321 that axially extends through the second gear 432. The third gear 433 has a third through-hole 4331 that axially extends through the third gear 433. The fourth gear 434 has a fourth through-hole 4341 that axially extends through the fourth gear 434. The first gear 431, the third gear 433, the fourth gear 434, and the second gear 432 are arranged side by side in sequence, and adjacent gears mesh with each other. The first gear 431 and the fourth gear 434 rotate in the same direction, the third gear 433 and the second gear 432 rotate in the same direction, and the first gear 431 and the second gear 432 rotate in opposite directions. The synchronous gear 43 is mounted in the receiving groove 113 of the fixed base 10, and the axis direction of the synchronous gear 43 is parallel to the Y direction.

[0092] The first synchronous swing arm 41 includes a first end 411 and a second end 412, which are disposed opposite each other. The first end 411 of the first synchronous swing arm 41 is fixedly connected to the first gear 431, and the second end 412 is configured to be slidably connected to the first fixed plate 21. The second synchronous swing arm 42 includes a third end 421 and a fourth end 422, which are disposed opposite each other. The third end 421 of the second synchronous swing arm 42 is fixedly connected to the second gear 432, and the fourth end 422 is configured to be slidably connected to the second fixed plate 22.

[0093] In this embodiment, the hinge 1 includes a first hinge 44 and a second hinge 45. The first hinge 44 includes a first protrusion 441. There are multiple first protrusions 441. In this embodiment, there are three first protrusions 441. The three first protrusions 441 are respectively a first first protrusion 4411, a second first protrusion 4412, and a third first protrusion 4413. The first protrusions 441 are generally trapezoidal, and the outer surface of the first protrusions 441 is arcuate. Each first protrusion 441 includes a first inclined surface 4414, a second inclined surface 4415, and a first flat surface 4416. The first inclined surface 4414 and the second inclined surface 4415 are respectively connected to opposite sides of the first flat surface 4416, and the first inclined surface 4414 and the second inclined surface 4415 are arranged opposite each other. The angle between the first inclined surface 4414 and the first flat surface 4416 is obtuse, and the angle between the second inclined surface 4415 and the first flat surface 4416 is obtuse. The three first protrusions 441 are fixedly connected to the side of the first gear 431 and are spaced circumferentially around the first through-hole 4311. The first hinge 44 is provided with first recesses 442. In this embodiment, there are three first recesses 442. One first recess 442 is located between two adjacent first protrusions 441. In other words, the three first protrusions 441 and the three first recesses 442 are staggered circumferentially around the first through-hole 4311. The first first recess 4421 is located between the first first protrusion 4411 and the second first protrusion 4412. The second first recess 4422 is located between the second first protrusion 4412 and the third first protrusion 4413. The third first recess 4423 is located between the third first protrusion 4413 and the first first protrusion 4411. Rotation of the first synchronous swing arm 41 drives the first gear 431, thereby driving the synchronous rotation of the first hinge 44.

[0094] The structure of the second hinge 45 is identical to that of the first hinge 44. The second hinge 45 includes a second protrusion 451. In this embodiment, there are three second protrusions 451. The structure of the second protrusions 451 is identical to that of the first protrusion 441. The three second protrusions 451 are fixedly connected to the side of the second gear 432 and are spaced circumferentially around the periphery of the second through-hole 4321. The second protrusions 451 and the first protrusions 441 are located on the same side of the synchronous gear 43. The second hinge 45 is provided with a second recess 452. The structure of the second recess 452 is identical to that of the first recess 442. The three second protrusions 451 and the three second recesses 452 are staggered circumferentially around the periphery of the second through-hole 4321. When the second synchronous swing arm 42 rotates, it drives the second gear 432 to rotate, thereby driving the second hinge 45 to rotate synchronously.

[0095] The damping member 2 includes a first baffle 46, a second baffle 48, a magnetic spring 47, and a fixing rod 49. The first baffle 46 includes a main body 461, a first hinge seat 462, and a second hinge seat 465. The main body 461 is a long, plate-like structure. The main body 461 includes a first surface 4611 and a second surface 4612. The first surface 4611 and the second surface 4612 are arranged opposite each other. The main body 461 is provided with a first mounting hole 4613, a second mounting hole 4614, a third mounting hole 4615, and a fourth mounting hole 4616. The first mounting hole 4613, the second mounting hole 4614, the third mounting hole 4615, and the fourth mounting hole 4616 are arranged at intervals along the length direction of the first main body 461 and pass through the first surface 4611 and the second surface 4612.

[0096] The first hinge seat 462 includes three third protrusions 463. In this embodiment, there are three third protrusions 463. These three protrusions 463 are respectively a first third protrusion 4631, a second third protrusion 4632, and a third third protrusion 4633. The third protrusions 463 are generally trapezoidal, and the outer surface of the third protrusions 463 is arcuate. Each third protrusion 463 includes a third inclined surface 4634, a fourth inclined surface 4635, and a second flat surface 4636. The third inclined surface 4634 and the fourth inclined surface 4635 are respectively connected to opposite sides of the second flat surface 4636, and the third inclined surface 4634 and the fourth inclined surface 4635 are arranged opposite each other. The angle between the third inclined surface 4634 and the second flat surface 4636 is obtuse, and the angle between the fourth inclined surface 4635 and the second flat surface 4636 is also obtuse. The shape of the third protrusions 463 matches the shape of the first recess 442. In other words, the third protrusions 463 can be firmly retained in the first recess 442. The third protrusion 463 is fixedly connected to the first surface 4611 and extends away from the first surface 4611. The three third protrusions 463 are spaced circumferentially around the periphery of the first mounting hole 4613. The body 461 is also provided with a third recess 464. In this embodiment, there are three third recesses 464. One third recess 464 is provided between two adjacent third protrusions 463. It can also be understood that the three third protrusions 463 and the three third recesses 464 are staggered circumferentially around the periphery of the first mounting hole 4613. The shape of the third recess 464 matches the shape of the first protrusion 441. In other words, the first recess 442 can be precisely retained within the third recess 464.

[0097] The second hinge seat 465 includes a fourth protrusion 466. The structure of the second hinge seat 465 is the same as that of the first hinge seat 462. The shape of the fourth protrusion 466 is the same as that of the third protrusion 463. The fourth protrusion 466 is provided on the first surface 4611, and the three fourth protrusions 466 are arranged axially and spaced apart around the periphery of the fourth mounting hole 4616. The shape of the fourth protrusion 466 matches the structure of the second recess 452. A fourth recess 467 is provided between each adjacent fourth protrusion 466. The three fourth protrusions 466 and the three fourth recesses 467 are staggered circumferentially around the periphery of the fourth mounting hole 4616.

[0098] The first baffle 46 is arranged side by side with the synchronous gear 43, with its length parallel to the X-direction and its first surface 4611 facing the synchronous gear 43. The third protrusion 463 is arranged opposite the first protrusion 441, and the first hinge seat 462 is hingedly connected to the first hinge member 44. The fourth protrusion 466 is arranged opposite the second protrusion 451, and the second hinge seat 465 is hingedly connected to the second hinge member 45. The first mounting hole 4613 is arranged opposite the first through-hole 4311, the second mounting hole 4614 is arranged opposite the third through-hole 4331, the third mounting hole 4615 is arranged opposite the fourth through-hole 4341, and the fourth mounting hole 4616 is arranged opposite the second through-hole 4321.

[0099] Please also refer to Figure 13 , Figure 13 yes Figure 12 FIG. 4 is a schematic diagram of the enlarged structure of the magnetic spring 47. FIG.

[0100] The magnetic spring 47 is formed by winding multiple turns of a magnetic coil, which can be understood as a helical spring with magnetic properties. In this embodiment, there are four magnetic springs 47, and all four magnetic springs 47 have the same structure. The four magnetic springs 47 are respectively a first magnetic spring 471, a second magnetic spring 472, a third magnetic spring 473, and a fourth magnetic spring 474.

[0101] Each magnetic spring 47 includes a first magnetic portion 475 and a second magnetic portion 476. The first magnetic portion 475 and the second magnetic portion 476 are fixedly connected and located on opposite sides of an axial cross-section of the magnetic spring 47. The axial cross-section is a plane passing through the axis of the corresponding magnetic spring 47. It can also be understood that the plane passing through the axis divides the magnetic spring 47 into two equal parts: the first magnetic portion 475 and the second magnetic portion 476, respectively. The first magnetic portion 475 and the second magnetic portion 476 are symmetrical with respect to the plane.

[0102] The magnetic spring 47 is a magnet. The first magnetic portion 475 and the second magnetic portion 476 have opposite polarities. In this embodiment, the first magnetic portion 475 has an N pole, and the second magnetic portion 476 has an S pole. The portion of the magnetic coil located in the first magnetic portion 475 is all N poles, and a magnetic repulsive force exists between two adjacent turns of the magnetic coil located in the first magnetic portion 475. Furthermore, the smaller the distance between the two adjacent turns of the magnetic coil, the greater the magnetic repulsive force between them. The other portion of the magnetic coil located in the second magnetic portion 476 is all S poles, and a magnetic repulsive force exists between the two adjacent turns of the magnetic coil. Furthermore, the smaller the distance between the two adjacent turns of the magnetic coil, the greater the magnetic repulsive force between them. It can be understood that when force F1 is applied to compress the magnetic spring 47, the magnetic spring 47 is compressed, the distance between the two adjacent turns of the magnetic coil decreases, and the magnetic repulsive force between the two adjacent turns of the magnetic coil increases. The magnetic spring 47 has both elastic restoring force and magnetic repulsive force, and the directions of the elastic restoring force and magnetic repulsive force are opposite to the direction of force F1.

[0103] Please also refer to Figure 14 , Figure 14 yes Figure 5 A partial structural diagram of the rotating mechanism 100 is shown.

[0104] The four magnetic springs 47 are all located on the side of the first baffle 46 facing away from the synchronous gear 43 and are arranged side by side along the X-direction, with the elastic extension direction of the four magnetic springs 47 parallel to the Y-direction. One end of each of the four magnetic springs 47 is fixedly connected to the second surface 4612, or the magnetic springs 47 can also abut the second surface 4612. The four magnetic springs 47 are respectively opposite the first mounting hole 4613, the second mounting hole 4614, the third mounting hole 4615, and the fourth mounting hole 4616. When the magnetic springs 47 are compressed, the first magnetic spring 471, the second magnetic spring 472, the third magnetic spring 473, and the fourth magnetic spring 474 all exert a magnetic repulsive force F2 and an elastic restoring force F3, with the direction of the magnetic repulsive force F2 being opposite to the direction of the elastic restoring force F3.

[0105] See also Figure 12The second baffle 48 is a long, plate-like structure. The length of the second baffle 48 is consistent with that of the first baffle 46. Of course, the lengths of the first baffle 46 and the second baffle 48 may also have a slight deviation. The second baffle 48 is provided with a fifth mounting hole 481 and a sixth mounting hole 482, which are spaced apart along the length direction of the second baffle 48. The second baffle 48 is located at the end of the magnetic spring 47 facing away from the first baffle 46, and the second baffle 48 is arranged parallel to the first baffle 46. The magnetic spring 47 is located between the first baffle 46 and the second baffle 48, and the first baffle 46 and the second baffle 48 resist the magnetic spring 47. Alternatively, the second baffle 48 can also be fixedly connected to the magnetic spring 47. Among them, the fifth mounting hole 481 is opposite to the first mounting hole 4613, and the sixth mounting hole 482 is opposite to the fourth mounting hole 4616.

[0106] In this embodiment, there are four fixed rods 49. These four fixed rods 49 are respectively a first fixed rod 491, a second fixed rod 492, a third fixed rod 493, and a fourth fixed rod 494. All four fixed rods 49 are mounted on the fixed base 10. The lengths of the four fixed rods 49 are parallel to the Y direction, and the four fixed rods 49 are spaced apart and arranged parallel to the Y direction. One end of each of the four fixed rods 49 is fixedly connected to the fixed base 10. The other end of the first fixed rod 491 passes through the first through-hole 4311, the first mounting hole 4613, the first magnetic spring 471, and the fifth mounting hole 481, in sequence, and is fixedly connected to the second baffle 48. The first gear 431 is rotatable relative to the first fixed rod 491, and the first baffle 46 and the first magnetic spring 471 are slidable relative to the first fixed rod 491. The other end of the second fixed rod 492 passes through the third through-hole 4331, the second mounting hole 4614, and the second magnetic spring 472, in sequence, and is fixedly connected to the second baffle 48. The third gear 433 is rotatable relative to the second fixed rod 492, and the first baffle 46 and the second magnetic spring 472 are slidable relative to the second fixed rod 492. The other end of the third fixed rod 493 passes through the fourth through-hole 4341, the third mounting hole 4615, and the third magnetic spring 473, and is fixedly connected to the second baffle 48. The fourth gear 434 is rotatable relative to the third fixed rod 493, and the first baffle 46 and the third magnetic spring 473 are slidable relative to the third fixed rod 493. The other end of the fourth fixed rod 494 passes through the second through-hole 4321, the fourth mounting hole 4616, the fourth magnetic spring 474, and the sixth mounting hole 482, and is fixedly connected to the second baffle 48. The second gear 432 is rotatable relative to the fourth fixed rod 494, and the first baffle 46 and the fourth magnetic spring 474 are slidable relative to the fourth fixed rod 494.

[0107] In this embodiment, by providing fixing rods 49 and sleeved around the outer periphery of each fixing rod 49, each fixing rod 49 secures the corresponding magnetic spring 47, thereby preventing any one magnetic spring 47 from deviating due to the magnetic field of another magnetic spring 47. For example, the first fixing rod 491 secures the first magnetic spring 471, thereby preventing the magnetic fields of the second magnetic spring 472, the third magnetic spring 473, and the fourth magnetic spring 474 from affecting the first magnetic spring 471 and causing it to bend or deviate from the Y-axis.

[0108] In one embodiment, there are two magnetic springs 47. One magnetic spring 47 is sleeved on the outer periphery of the first fixing rod 491, and the other magnetic spring 47 is sleeved on the outer periphery of the fourth fixing rod 494. The two magnetic springs 47 are arranged at an interval to reduce the mutual influence of the magnetic fields generated by the two magnetic springs 47.

[0109] In one embodiment, there are two magnetic springs 47. One of the magnetic springs 47 is sleeved on the outer circumference of the first fixed rod 491, and the other magnetic spring 47 is sleeved on the outer circumference of the fourth fixed rod 494. The damping member 2 also includes a spring. The spring here is an ordinary spring, that is, a spring without magnetism. In this embodiment, there are two springs. One spring is sleeved on the outer circumference of the second fixed rod 492, and the other spring is sleeved on the outer circumference of the third fixed rod 493. In this embodiment, by providing two non-magnetic springs between the two magnetic springs 47, the mutual influence of the magnetic fields generated by the two magnetic springs 47 can be reduced, while also increasing the damping force provided by the damping member 2.

[0110] Please also refer to Figure 15 , Figure 15 yes Figure 5 A cross-sectional view of the rotating mechanism 100 is shown.

[0111] The synchronization assembly 40 is mounted on the fixed base 10. The synchronization gear 43, hinge 1, and damping element 2 are located within the fixed base 10. The first synchronization swing arm 41 and the second synchronization swing arm 42 are located on opposite sides of the fixed base 10 in the X-direction. The second end 412 of the first synchronization swing arm 41 extends into the first slot 216 of the first fixed plate 21 and is slidably connected to the first fixed plate 21. The fourth end 422 of the second synchronization swing arm 42 extends into the second slot 226 of the second fixed plate 22 and is slidably connected to the second fixed plate 22. Simultaneously, the hinge seat of the first baffle 46 is hinged to the hinge 1, the first hinge 44 is hinged to the first hinge seat 462, and the second hinge 45 is hinged to the second hinge seat 465.

[0112] When the first fixed plate 21 rotates relative to the fixed base 10, it drives the first synchronous swing arm 41 to rotate, and causes the first synchronous swing arm 41 to slide within the first sliding groove 216. When the first synchronous swing arm 41 rotates, it drives the first gear 431 to rotate synchronously, thereby driving the second gear 432 to rotate via the third gear 433 and the fourth gear 434, thereby driving the second synchronous swing arm 42 to rotate, thereby driving the second fixed plate 22 to rotate, and causing the second synchronous swing arm 42 to slide within the second sliding groove 226, thereby achieving synchronous rotation of the first and second synchronous swing arms 41 and 42, as well as synchronous rotation of the first and second fixed plates 21 and 22.

[0113] It should be noted that when the first gear 431 rotates, it drives the first hinge 44 to rotate. When the first hinge 44 rotates, the first protrusion 441 rotates from the third recess 464 of the first hinge seat 462 to the third protrusion 463, and then from the third protrusion 463 to the third recess 464. This repeatedly pushes the first hinge seat 462 to slide along the first fixing rod 491, driving the first baffle 46 to slide, thereby compressing the magnetic spring 47, causing it to generate elastic force and magnetic repulsion. Simultaneously, when the second gear 432 rotates, it drives the second hinge 45 to rotate. When the second hinge member 45 rotates, the second protrusion 451 rotates from the fourth recess 467 of the second hinge seat 465 to the fourth protrusion 466, and then rotates from the fourth protrusion 466 into the fourth recess 467, thereby repeatedly pushing the second hinge seat 465 to slide along the fourth fixed rod 494. Together with the first hinge seat 462, the second protrusion 451 drives the first baffle 46 to slide, further compressing the magnetic spring 47, causing the magnetic spring 47 to generate elastic force and magnetic repulsion force, thereby providing a damping force for the rotation of the first synchronous swing arm 41 and the second synchronous swing arm 42. The damping force of the first synchronous swing arm 41 acts on the first housing 210 via the first fixed plate 21, and the damping force of the second synchronous swing arm 42 acts on the second housing 220 via the second fixed plate 22, thereby providing a damping feel to the user and enhancing the user experience.

[0114] It should be explained that the damping feel of the rotating mechanism 100 can be understood as the damping force applied to the first synchronous swing arm 41 and the second synchronous swing arm 42 during rotation, that is, the force applied by the damping member 2 on the hinge 1, and the force applied by the first baffle 46 on the hinge 1. The force applied by the first baffle 46 on the hinge 1 is the combined force of the elastic restoring force and the magnetic repulsive force of the magnetic spring 47. It can be understood that the damping force applied to the synchronous assembly 40 during rotation is the combined force of the elastic restoring force and the magnetic repulsive force of the magnetic spring 47 on the hinge 1.

[0115] By providing a magnetic spring 47 in this embodiment, the damping force applied to the synchronization assembly 40 during rotation is the combined force of the elastic restoring force of the magnetic spring 47 and the magnetic repulsive force on the hinge 1. This increases the damping force provided by a single magnetic spring 47. While maintaining the same damping force achieved by the rotation mechanism 100, the number of magnetic springs 47 can be reduced, thereby simplifying the structure of the rotation mechanism 100 and reducing the assembly difficulty, weight, and cost of the rotation mechanism 100. This also helps reduce the thickness of the rotation mechanism 100, achieving a lightweight and thinner foldable electronic device 500. Furthermore, when the magnetic spring 47 provided in this embodiment is compressed, there is a magnetic repulsive force between adjacent magnetic coils. Therefore, the damping force provided by the magnetic spring 47 per unit compression is increased, thereby shortening the length of the magnetic spring 47 and, in turn, saving space near the damping element 2. In other words, the space occupied by the entire damping element 2 is reduced.

[0116] See also Figure 16 , Figure 16 yes Figure 5 The diagram shows a partial structure of the rotating mechanism 100 in a flattened state.

[0117] When the rotating mechanism 100 is in the flattened state, the first fixed plate 21 and the second fixed plate 22 are relatively unfolded, the first main swing arm 31 and the second main swing arm 32 are relatively unfolded, and the first synchronous swing arm 41 and the second synchronous swing arm 42 are relatively unfolded. The first rotating body 312 is located in the first rotating groove 111, and the second rotating body 322 is located in the second rotating groove 112. The first hinge 44 engages with the first hinge seat 462, the first protrusion 441 is located in the third recess 464, and the third protrusion 463 is located in the first recess 442. Specifically, the first third protrusion 4631 is located in the first recess 442 between the first first protrusion 4411 and the second first protrusion 4412, the second third protrusion 4632 is located in the first recess 442 between the second first protrusion 4412 and the third first protrusion 4413, and the third third protrusion 4633 is located in the first recess 442 between the third first protrusion 4413 and the first first protrusion 4411. At the same time, the second hinge member 45 engages with the second hinge seat 465, the second protrusion 451 is located within the fourth recess 467, and the fourth protrusion 466 is located within the second recess 452. The distance between the first baffle 46 and the second baffle 48 is L1. The magnetic spring 47 is in a pre-compressed state and exerts a first magnetic repulsive force. The "pre-compressed state" here can refer to either a compressed state or a natural state.

[0118] Please also refer to Figure 17 , Figure 17 yes Figure 5 The diagram shows a partial structure of the rotating mechanism 100 in a first intermediate state.

[0119] The first fixed plate 21 rotates clockwise by ω2, driving the first main swing arm 31 to rotate clockwise by ω2, causing the first rotating body 312 to slide within the first rotation slot 111 away from the fixed base 10. Simultaneously, the clockwise rotation of the first fixed plate 21 also drives the first synchronous swing arm 41 to rotate clockwise by ω2, causing it to slide within the first sliding slot 216. The clockwise rotation of the first synchronous swing arm 41 drives the first gear 431 to rotate clockwise by ω2, thereby driving the first hinge 44 to rotate clockwise by ω2. The first inclined surface 4414 of the first first protrusion 4411 abuts against the fourth inclined surface 4635 of the first third protrusion 4631, causing the fourth inclined surface 4635 of the first third protrusion 4631 to move along the first inclined surface 4414 of the first first protrusion 4411, away from the first recess 442. The first inclined surface 4414 of the second first protrusion 4412 abuts against the fourth inclined surface 4635 of the second third protrusion 4632, causing the fourth inclined surface 4635 of the second third protrusion 4632 to move along the first inclined surface 4414 of the second first protrusion 4412 in a direction away from the first recess 442. The first inclined surface 4414 of the third first protrusion 4413 abuts against the fourth inclined surface 4635 of the third third protrusion 4633, causing the fourth inclined surface 4635 of the third third protrusion 4633 to move along the first inclined surface 4414 of the third first protrusion 4413 in a direction away from the first recess 442.

[0120] Furthermore, when the first gear 431 rotates clockwise (ω2), it also drives the third gear 433 and the fourth gear 434 to rotate, which in turn drives the second gear 432 to rotate counterclockwise (ω1), thereby driving the second hinge member 45 to rotate counterclockwise (ω1). When the second hinge member 45 rotates counterclockwise (ω1), it drives the second protrusion 451 to rotate counterclockwise (ω1), and abuts against the fourth protrusion 466, causing the fourth protrusion 466 to move along the inclined surface of the second protrusion 451 in a direction away from the second recess 452.

[0121] That is, when the first synchronous swing arm 41 rotates, the first hinge 44 drives the first hinge seat 462 to move in the negative direction of the Y-axis, and the second hinge 45 drives the second hinge seat 465 to move in the negative direction of the Y-axis, thereby driving the first baffle 46 in the negative direction of the Y-axis, reducing the distance between the first baffle 46 and the second baffle 48 to L2. The magnetic spring 47 is compressed, and the magnetic spring 47 has a third magnetic repulsive force. Here, L2 is less than L1, and the third magnetic repulsive force is greater than the first magnetic repulsive force.

[0122] At the same time, the counterclockwise rotation of the second gear 432 also drives the second synchronous swing arm 42 to rotate counterclockwise ω1, thereby driving the second fixed plate 22 to rotate counterclockwise ω1, and causing the second synchronous swing arm 42 to slide in the second sliding groove 226, so that the rotating mechanism 100 is in the first intermediate state (such as Figure 17 shown).

[0123] See also Figure 18 , Figure 18 yes Figure 5 The diagram shows a partial structure of the rotating mechanism 100 in the second intermediate state.

[0124] exist Figure 15 On this basis, the first fixed plate 21 continues to rotate clockwise (ω2), driving the first main swing arm 31 to continue rotating clockwise (ω2). The first rotating body 312 continues to slide within the first rotation slot 111, away from the fixed base 10. Simultaneously, the first fixed plate 21 rotates clockwise (ω2), driving the first gear 431 to continue rotating clockwise (ω2) via the first synchronous swing arm 41. This also drives the second gear 432, the second synchronous swing arm 42, and the second fixed plate 22 to rotate counterclockwise (ω1). As the first gear 431 continues to rotate clockwise (ω2), it drives the first hinge 44 to continue rotating. The first protrusion 441 continues to abut against the third protrusion 463, causing it to move further away from the first recess 442 until the first flat surface 4416 of the first protrusion 441 abuts the second flat surface 4636 of the third protrusion 463. As the second gear 432 rotates counterclockwise (ω1), it drives the second hinge 45 to continue rotating. The second protrusion 451 continues to abut against the fourth protrusion 466 and causes the fourth protrusion 466 to continue to move away from the second recess 452 until the flat portion of the second protrusion 451 abuts against the flat portion of the third protrusion 463 .

[0125] The third and fourth protrusions 463 and 466 are subjected to a force in the negative direction of the Y-axis, driving the first baffle 46 to continue moving in the negative direction of the Y-axis, further reducing the distance between the first and second baffles 46 and 48 to L3 and compressing the magnetic spring 47. At this point, the magnetic spring 47 exerts a second magnetic repulsive force. L3 is smaller than both L2 and L1, and the second magnetic repulsive force is greater than both the third and first magnetic repulsive forces.

[0126] At the same time, the counterclockwise rotation of the second gear 432 also drives the second synchronous swing arm 42 to rotate counterclockwise ω1, thereby driving the second fixed plate 22 to rotate counterclockwise ω1, and causing the second synchronous swing arm 42 to slide in the second sliding groove 226, so that the rotating mechanism 100 is in the second intermediate state (such as Figure 18 shown).

[0127] In this embodiment, as the rotating mechanism 100 rotates from the flattened state through the first intermediate state to the second intermediate state, the distance between the first baffle 46 and the second baffle 48 decreases from L1 to L2 and then to L3. The length of the magnetic spring 47 gradually decreases, the distance between two adjacent turns of the magnetic coil gradually decreases, and the magnetic repulsive force between the two adjacent turns of the magnetic coil gradually increases. The magnetic repulsive force of the magnetic spring 47 increases from the first magnetic repulsive force to the third magnetic repulsive force and then to the second magnetic repulsive force. This gradually increases the damping force applied by the damping member 2 on the hinge 1, thereby gradually increasing the damping force of the rotating mechanism 100 and gradually increasing the damping feel perceived by the user. Furthermore, in this embodiment, by providing the magnetic spring 47 between the first baffle 46 and the second baffle 48, the damping force applied by the damping member 2 on the hinge 1 can be increased, thereby enhancing the damping feel of the rotating mechanism 100.

[0128] See also Figure 19 , Figure 19 yes Figure 5 The diagram shows a partial structure of the rotating mechanism 100 in a folded state.

[0129] exist Figure 18 On this basis, the first fixed plate 21 continues to rotate clockwise (ω2), driving the first main swing arm 31 to continue rotating clockwise (ω2), causing the first rotating body 312 to continue sliding within the first rotation slot 111, away from the fixed base 10. Simultaneously, the clockwise rotation of the first fixed plate 21 also drives the first gear 431 to continue rotating clockwise (ω2) via the first synchronous swing arm 41. This also drives the second gear 432, the second synchronous swing arm 42, and the second fixed plate 22 to rotate counterclockwise (ω1). As the first gear 431 continues to rotate clockwise (ω2), it drives the first hinge 44 to continue rotating, causing the first flat surface 4416 to slide along the second flat surface 4636 and the third protrusion 463 to slide into the first recess 442. As the second gear 432 rotates counterclockwise (ω1), it drives the second hinge 45 to continue rotating counterclockwise (ω1), causing the flat surface of the second protrusion 451 to slide along the flat surface of the third protrusion 463 and the fourth protrusion 466 to slide into the second recess 452. Among them, the first third protrusion 4631 is located in the first recess 442 between the third first protrusion 4413 and the first first protrusion 4411, the second third protrusion 4632 is located in the first recess 442 between the first first protrusion 4411 and the second first protrusion 4412, and the third third protrusion 4633 is located in the first recess 442 between the second first protrusion 4412 and the third first protrusion 4413.

[0130] The first protrusion 441 releases the third protrusion 463, and the second protrusion 451 releases the fourth protrusion 466. Under the elastic restoring force and magnetic repulsion force of the magnetic spring 47, the first baffle 46 moves toward the positive direction of the Y-axis, so that the third protrusion 463 is located within the first recess 442 and the fourth protrusion 466 is located within the second recess 452, thereby reducing the distance between the first baffle 46 and the second baffle 48 to L1. At this point, the magnetic spring 47 exerts a fourth magnetic repulsion force. The fourth magnetic repulsion force is equal in magnitude to the first magnetic repulsion force. Of course, a small deviation is permitted. It can also be understood that the fourth magnetic repulsion force is the same as the first magnetic repulsion force.

[0131] At the same time, the counterclockwise rotation of the second gear 432 (ω1) also drives the second synchronous swing arm 42 to rotate counterclockwise (ω1), which in turn drives the second fixed plate 22 to rotate counterclockwise (ω1), causing the second synchronous swing arm 42 to slide within the second slide slot 226, thereby rotating the rotating mechanism 100 to the folded state. When the rotating mechanism 100 is in the folded state, the distance between the first baffle 46 and the second baffle 48 is equal to L1.

[0132] In this embodiment, when the rotating mechanism 100 rotates from the second intermediate state to the folded state, the distance between the first baffle 46 and the second baffle 48 gradually increases from L3 to L1, the length of the magnetic spring 47 gradually increases, the distance between two adjacent turns of the magnetic coil gradually increases, the magnetic repulsive force between the two adjacent turns of the magnetic coil gradually decreases, and the magnetic repulsive force of the magnetic spring 47 gradually decreases, thereby gradually reducing the force applied by the damping member 2 on the hinge 1, and thus gradually weakening the damping feel of the rotating mechanism 100. When the rotating mechanism 100 rotates to the folded state, the damping force acting on the rotating mechanism 100 is at a minimum value, thereby providing the user with tactile feedback to prompt the user that the rotating mechanism 100 has rotated to the folded state, thereby providing the user with a locked feel when folded into place.

[0133] Please continue reading Figure 19 When the rotating mechanism 100 is in the folded state, the first fixed plate 21 and the second fixed plate 22 are folded relative to each other, the first main swing arm 31 and the second main swing arm 32 are folded relative to each other, and the first synchronous swing arm 41 and the second synchronous swing arm 42 are folded relative to each other. The first hinge 44 is engaged with the first hinge seat 462, the first protrusion 441 is located in the third recess 464, and the third protrusion 463 is located in the first recess 442. The second hinge 45 is engaged with the second hinge seat 465, the second protrusion 451 is located in the fourth recess 467, and the fourth protrusion 466 is located in the second recess 452. The distance between the first baffle 46 and the second baffle 48 is L1. The magnetic spring 47 is in a pre-compressed state.

[0134] The first fixed plate 21 rotates counterclockwise by ω1, driving the first main swing arm 31 to rotate counterclockwise by ω1, causing the first rotating body 312 to slide within the first rotating groove 111 toward the fixed base 10. Simultaneously, the counterclockwise rotation of the first fixed plate 21 also drives the first synchronous swing arm 41 to rotate counterclockwise by ω1, causing it to slide within the first sliding groove 216.

[0135] When the first synchronous swing arm 41 rotates counterclockwise (ω1), it drives the first gear 431 to rotate counterclockwise (ω1), thereby driving the first hinge member 44 to rotate counterclockwise (ω1). The first protrusion 441 abuts the third protrusion 463, causing the third protrusion 463 to move away from the first recess 442 until the first flat surface 4416 abuts the second flat surface 4636. Furthermore, the counterclockwise (ω1) rotation of the first gear 431 also drives the second gear 432 to rotate clockwise (ω2) via the third gear 433 and the fourth gear 434, thereby driving the second hinge member 45 to rotate clockwise (ω2). The second protrusion 451 abuts the fourth protrusion 466, causing it to move away from the second recess 452 until the flat surface of the second protrusion 451 abuts the flat surface of the fourth protrusion 466. The third protrusion 463 and the fourth protrusion 466 are subjected to a force in the negative direction of the Y-axis, driving the first baffle 46 to move in the negative direction of the Y-axis, so that the distance between the first baffle 46 and the second baffle 48 continues to decrease, and compresses the magnetic spring 47, so that the distance between two adjacent turns of the magnetic coil increases, thereby increasing the magnetic repulsive force of the magnetic spring 47.

[0136] At the same time, the second gear 432 rotates clockwise by ω2, which also drives the second synchronous swing arm 42 to rotate clockwise by ω2, thereby driving the second fixed plate 22 to rotate clockwise by ω2, and causing the second synchronous swing arm 42 to slide in the second sliding groove 226, so that the rotating mechanism 100 is in the second intermediate state (such as Figure 18 At this time, the distance between the first baffle 46 and the second baffle 48 is L3.

[0137] In this embodiment, during the process of the rotating mechanism 100 rotating from the folded state to the second intermediate state, the distance between the first baffle 46 and the second baffle 48 decreases from L1 to L3, the length of the magnetic spring 47 gradually decreases, the distance between two adjacent turns of the magnetic coil gradually decreases, the magnetic repulsion force between two adjacent turns of the magnetic coil gradually increases, and the magnetic repulsion force of the magnetic spring 47 gradually increases, so that the force applied by the damping member 2 to the hinge 1 gradually increases, and then the damping force of the rotating mechanism 100 gradually increases, and the damping feel perceived by the user gradually becomes obvious.

[0138] See also Figure 16 ,exist Figure 18On this basis, the first fixed plate 21 continues to rotate counterclockwise ω1, driving the first synchronous swing arm 41 to rotate counterclockwise ω1, and the first synchronous swing arm 41 drives the first gear 431 to continue to rotate counterclockwise ω1, and drives the second gear 432, the second synchronous swing arm 42 and the second fixed plate 22 to rotate clockwise ω2.

[0139] When the first gear 431 continues to rotate counterclockwise ω1, it drives the first hinge 44 to continue rotating, causing the first plane 4416 to slide along the second plane 4636, and causing the third protrusion 463 to slide into the first recess 442. When the second gear 432 rotates clockwise ω2, it drives the second hinge 45 to continue rotating clockwise ω2, causing the planar portion of the second protrusion 451 to slide along the planar portion of the third protrusion 463, and causing the fourth protrusion 466 to slide into the second recess 452. The first protrusion 441 releases the third protrusion 463, and the second protrusion 451 releases the fourth protrusion 466. Under the elastic restoring force and magnetic repulsive force of the magnetic spring 47, the first baffle 46 moves toward the positive direction of the Y-axis, so that the third protrusion 463 is located in the first recess 442, and the fourth protrusion 466 is located in the second recess 452, thereby reducing the distance between the first baffle 46 and the second baffle 48, so that the rotating mechanism 100 rotates to a flattened state (such as Figure 16 When the rotating mechanism 100 is in the flattened state, the distance between the first baffle 46 and the second baffle 48 is equal to L1.

[0140] In this embodiment, when the rotating mechanism 100 rotates from the second intermediate state to the flattened state, the distance between the first baffle 46 and the second baffle 48 gradually increases from L3 to L1, the length of the magnetic spring 47 gradually increases, the distance between two adjacent turns of the magnetic coil gradually increases, the magnetic repulsive force between the two adjacent turns of the magnetic coil gradually decreases, and the magnetic repulsive force of the magnetic spring 47 gradually decreases, thereby gradually reducing the force applied by the damping member 2 on the hinge 1, and thus gradually weakening the damping feel of the rotating mechanism 100. When the rotating mechanism 100 rotates to the flattened state, the damping force on the rotating mechanism 100 is at a minimum value, thereby providing the user with tactile feedback to prompt the user that the rotating mechanism 100 has rotated to the flattened state, thereby providing the user with a locked flattened feel and preventing damage to the display screen 300 caused by excessive expansion.

[0141] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A rotating mechanism, characterized in that: include: A fixed base, a first synchronous swing arm, a second synchronous swing arm, a first hinge member and a damping member; The first synchronous swing arm and the second synchronous swing arm are respectively installed on opposite sides of the fixed base in the width direction and are rotatably connected to the fixed base; The first hinge is fixedly connected to the first synchronous swing arm; The damping member includes a first baffle and a magnetic spring, the magnetic spring includes a magnetic coil wound with multiple turns, and the magnetic spring includes a first magnetic portion and a second magnetic portion, the first magnetic portion and the second magnetic portion are respectively located on opposite sides of an axial cross-section of the magnetic spring, and the first magnetic portion and the second magnetic portion have opposite polarities, a portion of the magnetic coil located in the first magnetic portion has the same polarity, and another portion of the magnetic coil is located in the second magnetic portion and has the same polarity; the axial cross-section is a plane passing through the axis of the magnetic spring; The magnetic spring is fixedly connected to the first baffle and the fixed base, the damping member is mounted on the fixed base, the first baffle is hinged to the first hinge, the magnetic spring has a magnetic repulsive force, and the direction of the magnetic repulsive force is consistent with the elastic extension direction of the magnetic spring; The rotation of the first synchronous swing arm can drive the first hinge to rotate, so that the first hinge abuts against the first baffle and compresses the magnetic spring, causing the magnetic spring to generate elastic restoring force and increase the magnetic repulsive force.

2. The rotation mechanism according to claim 1, characterized in that: The direction of the magnetic repulsive force of the magnetic spring is opposite to the compression direction of the magnetic spring.

3. The rotating mechanism according to claim 1 or 2, characterized in that: The first hinge includes a plurality of protrusions and recesses arranged alternately, and the first baffle is provided with a first hinge seat matching the first hinge; the protrusion of the first hinge is located in the recess of the first hinge seat, and the protrusion of the first hinge seat is located in the recess of the first hinge, so that the first synchronous swing arm is positioned relative to the fixed base; the first hinge rotates relative to the first hinge seat, and the protrusion of the first hinge resists the protrusion of the first hinge seat, so that the first hinge seat moves away from the first hinge and compresses the magnetic spring.

4. The rotation mechanism according to claim 1, wherein: The rotating mechanism includes a flattened state, a folded state and an intermediate state; when the rotating mechanism is in the folded state and the flattened state, the magnetic spring is in a pre-compression state, and the magnetic spring has a first magnetic repulsion force; when the rotating mechanism is in the intermediate state, the magnetic spring is in a compressed state, and the magnetic spring has a second magnetic repulsion force; the first magnetic repulsion force is smaller than the second magnetic repulsion force.

5. The rotation mechanism according to any one of claims 1, 2 and 4, characterized in that: The rotating mechanism also includes a synchronous gear, which includes a first gear, an intermediate gear and a second gear. The intermediate gear is located between the first gear and the second gear and is engaged with the first gear and the second gear. The first synchronous swing arm is fixedly connected to the first gear, and the second synchronous swing arm is fixedly connected to the second gear. The rotation directions of the first gear and the second gear are opposite.

6. The rotation mechanism according to claim 3, characterized in that: The rotating mechanism also includes a synchronous gear, which includes a first gear, an intermediate gear and a second gear. The intermediate gear is located between the first gear and the second gear and is engaged with the first gear and the second gear. The first synchronous swing arm is fixedly connected to the first gear, and the second synchronous swing arm is fixedly connected to the second gear. The rotation directions of the first gear and the second gear are opposite.

7. The rotating mechanism according to claim 5, characterized in that: The rotating mechanism also includes a second hinge, which is fixedly connected to the second synchronous swing arm, and the first baffle is hinged to the second hinge; the rotation of the second synchronous swing arm can drive the second hinge to rotate, and make the second hinge resist the first baffle to compress the magnetic spring and make the magnetic spring generate elastic restoring force and magnetic repulsion force.

8. The rotating mechanism according to claim 6, characterized in that: The rotating mechanism also includes a second hinge, which is fixedly connected to the second synchronous swing arm, and the first baffle is hinged to the second hinge; the rotation of the second synchronous swing arm can drive the second hinge to rotate, and make the second hinge resist the first baffle to compress the magnetic spring and make the magnetic spring generate elastic restoring force and magnetic repulsion force.

9. The rotation mechanism according to claim 8, characterized in that: The second hinge includes a plurality of protrusions and recesses arranged alternately. The first baffle is provided with a second hinge seat matching the second hinge, and the second hinge seat and the first hinge seat are arranged side by side and spaced apart. The protrusion of the second hinge is located in the recess of the second hinge seat, and the protrusion of the second hinge seat is located in the recess of the second hinge, so that the second synchronous swing arm is positioned relative to the fixed base. The second hinge rotates relative to the second hinge seat, and the protrusion of the second hinge presses against the protrusion of the second hinge seat, so that the second hinge seat moves away from the second hinge and compresses the magnetic spring.

10. The rotating mechanism according to any one of claims 1, 2, 4, 6-9, characterized in that: The rotating mechanism includes a first fixed plate and a second fixed plate, the first fixed plate and the second fixed plate are respectively located on opposite sides of the width direction of the fixed base, and the first fixed plate is slidably connected to the first synchronous swing arm, and the second fixed plate is slidably connected to the second synchronous swing arm.

11. The rotation mechanism according to claim 3, characterized in that: The rotating mechanism includes a first fixed plate and a second fixed plate, the first fixed plate and the second fixed plate are respectively located on opposite sides of the width direction of the fixed base, and the first fixed plate is slidably connected to the first synchronous swing arm, and the second fixed plate is slidably connected to the second synchronous swing arm.

12. The rotating mechanism according to claim 5, characterized in that: The rotating mechanism includes a first fixed plate and a second fixed plate, the first fixed plate and the second fixed plate are respectively located on opposite sides of the width direction of the fixed base, and the first fixed plate is slidably connected to the first synchronous swing arm, and the second fixed plate is slidably connected to the second synchronous swing arm.

13. The rotating mechanism according to claim 10, characterized in that: The fixed base is provided with a first rotation groove and a second rotation groove, the first rotation groove and the second rotation groove being arranged opposite to each other; the rotation mechanism includes a first main swing arm and a second main swing arm, the first main swing arm being mounted in the first rotation groove and being able to slide along the first rotation groove, and the first main swing arm being connected to the first fixed plate; The second main swing arm is installed in the second rotation groove and can slide along the second rotation groove, and the second main swing arm is connected to the second fixing plate; When the first fixing plate rotates relative to the fixed base, it can drive the first main swing arm to rotate relative to the fixed base; when the second fixing plate rotates relative to the fixed base, it can drive the second main swing arm to rotate relative to the fixed base.

14. The rotating mechanism according to claim 11 or 12, characterized in that: The fixed base is provided with a first rotation groove and a second rotation groove, the first rotation groove and the second rotation groove being arranged opposite to each other; the rotation mechanism includes a first main swing arm and a second main swing arm, the first main swing arm being mounted in the first rotation groove and being able to slide along the first rotation groove, and the first main swing arm being connected to the first fixed plate; The second main swing arm is installed in the second rotation groove and can slide along the second rotation groove, and the second main swing arm is connected to the second fixing plate; When the first fixing plate rotates relative to the fixed base, it can drive the first main swing arm to rotate relative to the fixed base; when the second fixing plate rotates relative to the fixed base, it can drive the second main swing arm to rotate relative to the fixed base.

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.

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