Rotating mechanism and foldable electronic device

Abstract

The present application provides a rotating mechanism and a foldable electronic device. The rotating mechanism includes a supporting base, a swing assembly, and a synchronization assembly. The swing assembly includes a first swing plate and a second swing plate. The first swing plate is provided with a first guide groove. The second swing plate is provided with a second guide groove, and at least portions of the first guide groove and the second guide groove are inclined. The synchronization assembly includes a first synchronization member and a second synchronization member. The first synchronization member includes a fixedly connected first sliding rod, a first swing arm, and a first synchronization gear. The first sliding rod slides and rotates in the first guide groove to drive the first swing arm to rotate. The second synchronization member includes a fixedly connected second sliding rod, a second swing arm, and a second synchronization gear. The second synchronization gear engages with the first synchronization gear. The second sliding rod slides and rotates in the second guide groove to drive the second swing arm to rotate. Direct engagement simplifies the structure of the rotating mechanism, reduces the weight of the rotating mechanism, reduces the difficulty of design and assembly, and facilitates the lightweight design of the electronic device.

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 advancement of technology, various electronic devices have become indispensable in daily life and production. Foldable electronic devices, with their large display area and portability, have become a growing trend. Current foldable electronic devices primarily rely on a rotating mechanism to achieve folding and unfolding. Existing rotating mechanisms utilize multiple gears and a spring-loaded, synchronously rotating mechanism, while also providing a certain damping force to enhance the user's experience.

[0003] However, the current rotating mechanism has many components such as synchronous gears and damping structures, which are relatively complex in structure and increase in weight, increasing the difficulty of design and assembly, and is not conducive to the lightweight design of electronic equipment. Summary of the Invention

[0004] The present application provides a rotating mechanism and a foldable electronic device, which simplifies the structure of the rotating mechanism, reduces the weight of the rotating mechanism, reduces the difficulty of design and assembly, and is conducive to the lightweight and thin design of the electronic device.

[0005] In a first aspect, the present application provides a rotation mechanism comprising: a supporting base, a swing assembly, and a synchronization assembly. The swing assembly comprises a first swing plate and a second swing plate, respectively positioned on either side of the supporting base along the width of the rotation mechanism. The first swing plate is provided with a first guide groove, and the second swing plate is provided with a second guide groove. At least portions of the first guide groove and the second guide groove are inclined relative to a longitudinal center plane of the supporting base, and the inclination direction is toward the center plane (plane O1). The synchronization assembly comprises a first synchronizer and a second synchronizer.

[0006] The supporting base is elongated. The first and second swing plates have essentially identical structures and are both cuboid thin plates. They are symmetrically arranged relative to the supporting base. The first and second guide grooves are both roughly cuboid in shape. The first and second synchronizers have essentially identical structures and are symmetrically arranged relative to the central axis of the supporting base along its length. The aforementioned center plane specifically refers to the plane containing the longitudinal and thickness-direction central axes of the rotating mechanism. The center plane extends along the Y-axis and is parallel to the Z-axis.

[0007] The first synchronizer includes a first sliding rod, a first swing arm, and a first synchronizer gear. One end of the first swing arm is fixedly connected to the first sliding rod, and the other end of the first swing arm is fixedly connected to the first synchronizer gear. The axes of the first sliding rod and the first synchronizer gear are parallel. The first synchronizer gear is rotatably connected to the support base. The first sliding rod is located in a first guide groove. The first sliding rod can slide and rotate in the first guide groove to drive the first swing arm to rotate relative to the support base. The first sliding rod, the first swing arm, and the first synchronizer gear are fixedly connected in sequence along the X-axis. The axis of the first sliding rod is parallel to the Y-axis, and the axis of the first synchronizer gear is parallel to the Y-axis.

[0008] The second synchronizer includes a second sliding rod, a second swing arm, and a second synchronizer gear. One end of the second swing arm is fixedly connected to the second sliding rod, and the other end of the second swing arm is fixedly connected to the second synchronizer gear. The axial directions of the second sliding rod and the second synchronizer gear are parallel. The second synchronizer gear is rotatably connected to the support base and meshes with the first synchronizer gear. The second sliding rod is located in a second guide groove. The second sliding rod can slide and rotate in the second guide groove to drive the second swing arm to rotate relative to the support base. The second sliding rod, the second swing arm, and the second synchronizer gear are fixedly connected in sequence along the X-axis. The axial directions of the second sliding rod and the second synchronizer gear are both parallel to the Y-axis.

[0009] In the above embodiment, the first synchronous gear of the first synchronizer directly meshes with the second synchronous gear of the second synchronizer. Compared with the technical solution of providing an intermediate gear in the prior art, this simplifies the structure of the rotation mechanism, reduces the weight of the rotation mechanism, and reduces the difficulty of design and assembly, which is conducive to the lightweight design of the electronic device. In addition, the first synchronous gear of the first synchronizer directly meshes with the second synchronous gear of the second synchronizer to achieve synchronization. The synchronous transmission chain is shorter, the synchronization function is more stable, and it is not easy to fail, which improves the stability of the rotation mechanism when switching between the folded state and the unfolded state. In addition, the direct engagement method makes the distance between the rotation centers of the first synchronizer and the second synchronizer closer, reducing the space occupied by the entire rotation mechanism in the X-axis direction and improving the structural compactness of the rotation mechanism.

[0010] Since the rotational axes of the first and second synchronizers are relatively close, the first and second synchronizers can be rotated approximately 45 to 60 degrees to drive the swing assembly from the deployed state to the folded state. This eliminates the need for the first and second synchronizers to rotate significantly, thereby reducing wear on the first and second synchronizers and extending their lifespan.

[0011] The first and second synchronizers rotate at a relatively small angle, and when the rotating mechanism is folded, the angle between them is approximately between 45 and 60 degrees. In other words, when the rotating mechanism is folded, the first swing arm of the first synchronizer extends in both the width and thickness directions of the rotating mechanism, while the second swing arm of the second synchronizer extends in both the width and thickness directions. As a result, the lengths of the first and second swing arms are shorter than in conventional designs, reducing the weight of the rotating mechanism and facilitating a lightweight design.

[0012] At least part of the first guide groove and the second guide groove are inclined toward the O1 surface, so that within the limited X-axis direction space, the space in the Z-axis direction is utilized to extend the length of the first guide groove and the second guide groove, ensuring that when the rotation center axes of the first synchronizer and the second synchronizer are close to each other, the first sliding rod and the second sliding rod have sufficient sliding travel to prevent the first sliding rod from detaching from the first guide groove and to prevent the second sliding rod from detaching from the second guide groove.

[0013] In some embodiments, the first guide groove includes a first portion and a second portion, the first portion being connected to the second portion and arranged at an angle; the first portion is inclined relative to a central plane and tilted toward the central plane; the second portion is inclined relative to the central plane and tilted away from the central plane; the central plane extends along the length of the support base and is parallel to the thickness of the support base. The opening of the first guide groove is located in the second portion and faces the central plane.

[0014] The angle between the first portion of the first guide groove and the center plane is a first angle, which is an acute angle and ranges from 55 degrees to 65 degrees. The angle between the second portion of the first guide groove and the first portion is a second angle, which ranges from 85 degrees to 100 degrees.

[0015] Within the same X-axis space, compared to arranging the first portion of the first guide groove perpendicular to the O1 plane, the first portion of the first guide groove is tilted toward the O1 plane, thereby increasing the length of the first portion of the first guide groove. This utilizes the space in the Z-axis direction within a limited width-direction sliding travel, increasing the sliding travel of the first sliding rod. This ensures that the first swing arm is relatively short, ensuring that the first sliding rod remains within the first portion of the first guide groove during sliding and does not disengage from the first guide groove, thereby enhancing the stability of the rotation mechanism.

[0016] In some embodiments, a first blocking block is provided at the opening of the first guide groove; the first blocking block is located in the first portion and partially blocks the opening of the first guide groove. The first guide groove includes a first groove bottom surface and a first groove top surface spaced opposite each other, the first groove top surface being located on the first blocking block, and the first sliding rod being located between the first groove bottom surface and the first groove top surface; the first groove bottom surface and the first groove top surface are both inclined relative to the center plane, and the inclination direction is toward the center plane. The first groove bottom surface and the first groove top surface are specifically arranged in parallel.

[0017] The angles between the bottom and top surfaces of the first groove and the O1 plane are both acute and range from 55 to 65 degrees. This causes the first portion of the first guide groove to tilt toward the O1 plane, thereby extending the first portion of the first guide groove within the limited X-axis space. This prevents the first sliding rod from sliding out of the space between the bottom and top surfaces of the first groove, and in other words, prevents the first sliding rod from sliding out of the first portion of the first guide groove, thereby increasing the stability of the rotation mechanism.

[0018] In some embodiments, the first guide groove also includes a first guide side surface and a second guide side surface, and the first guide side surface and the second guide side surface are respectively connected to the two opposite sides of the bottom surface of the first groove along the width direction of the rotating mechanism; the first guide side surface is spaced from the first blocking block to form an opening of the first guide groove, and the opening of the first guide groove forms a first installation gap; the first sliding rod extends into the first guide groove from the first installation gap and abuts against the second guide side surface.

[0019] The first blocking block includes a first end surface facing the first guide side surface, and the first end surface is spaced apart from the first guide side surface to form a first installation gap. When assembling the rotating mechanism, the first installation gap allows the first sliding rod to extend into the first portion of the first guide groove, thereby increasing the convenience of assembling the mechanism.

[0020] In some embodiments, the second guide side surface is arc-shaped and smoothly connected to the bottom surface of the first groove. As a result, when the first sliding rod slides in the first portion of the first guide groove and moves to contact the second guide side surface, or moves from the second guide side surface to the bottom surface of the first groove, wear on the first sliding rod can be reduced, thereby extending the life of the first sliding rod and increasing the stability of the rotation mechanism.

[0021] In some embodiments, the first guide side surface is inclined relative to the center plane, and the inclination direction faces away from the center plane. After the first sliding rod passes through the first installation gap, it can enter the first portion of the first guide groove by continuing to move along the extension direction of the first guide side surface. Thus, the inclination of the first guide side surface away from the O1 plane makes it easier for the first sliding rod to enter the first portion of the first guide groove, thereby increasing the convenience of assembling the rotation mechanism.

[0022] In some embodiments, the first guide side surface is at least partially arcuate and smoothly connected to the bottom surface of the first groove. Thus, when the first sliding rod slides in the first portion of the first guide groove and approaches the first guide side surface, wear of the first sliding rod by the first guide side surface can be reduced, thereby extending the life of the first sliding rod and increasing the stability of the rotation mechanism.

[0023] In some embodiments, the first guide groove also includes a first guide wall and a second guide wall, and the first guide wall and the second guide wall are respectively connected to the bottom surface of the first groove on opposite sides along the length direction of the rotating mechanism; the first guide wall is spaced from the first blocking block to form a first gap; the second guide wall is spaced from the first blocking block to form a second gap; the first gap and the second gap are both used to avoid the first swing arm.

[0024] The first swing arm includes a first synchronous swing arm and a second synchronous swing arm, which are respectively located at opposite ends of the first sliding rod, and the length directions of the first synchronous swing arm and the second synchronous swing arm intersect with the length direction of the first sliding rod; the first synchronous swing arm cooperates with the first gap, and the second synchronous swing arm cooperates with the second gap.

[0025] The first blocking block further includes a first side opposite to the first guide wall, and the first side of the first blocking block is spaced opposite to the first guide wall of the first guide groove along the Y-axis direction, forming the aforementioned first gap. The first blocking block further includes a second side opposite to the second guide wall, and the second side of the first blocking block is spaced opposite to the second guide wall of the first guide groove along the Y-axis direction, forming the aforementioned second gap. The first gap, the first blocking block, and the second gap are arranged in sequence along the Y-axis direction, and the first gap and the second gap are symmetrically distributed on both sides of the first blocking block.

[0026] The first gap provides clearance for the first synchronous swing arm, preventing interference with the first swing plate, allowing it to swing smoothly. The second gap provides clearance for the second synchronous swing arm, preventing interference with the first swing plate, allowing it to swing smoothly. This improves the reliability and stability of the rotating mechanism.

[0027] The first swing arm includes a first synchronous swing arm and a second synchronous swing arm. Compared with the first swing arm being configured as an integrally formed plate, the first swing arm is lighter.

[0028] In some embodiments, the first swing arm is an integrally formed rectangular parallelepiped plate, and the length of the first swing arm along the Y-axis is substantially the same as that of the first sliding rod. This facilitates the processing of the first swing arm and reduces the number of parts of the rotating mechanism.

[0029] In some embodiments, the first synchronous swing arm includes a first base, a first bent section, and a first connecting arm, which are fixed in sequence. The first base and the first connecting arm are located on opposite sides of the first bent section along the length of the support base, and the first base and the first bent section form an angle, and the first connecting arm and the first bent section form an angle. The first synchronous swing arm is generally Z-shaped, with the first base and the first bent section being substantially perpendicular, the first bent section and the first connecting arm being substantially perpendicular, the first base extending in the negative direction of the X-axis, and the first connecting arm extending in the positive direction of the X-axis.

[0030] The second synchronous swing arm includes a second base, a second bent section, and a second connecting arm, which are fixed in sequence. The second base and the second connecting arm are located on opposite sides of the second bent section along the length of the support base, and the second base and the second bent section form an angle, and the second connecting arm and the second bent section form an angle. The second synchronous swing arm is generally Z-shaped, with the second base and the second bent section being substantially perpendicular, the second bent section and the connecting arm being substantially perpendicular, the second base extending in the negative direction of the X-axis, and the second connecting arm extending in the positive direction of the X-axis.

[0031] The ends of the first sliding rod are fixedly connected to the ends of the first and second bases, respectively; the first base is located within the first gap, and the second base is located within the second gap; the first synchronous gear is fixedly connected to the ends of the first connecting arm and the ends of the second connecting arm, and the first and second connecting arms are both located within the first guide groove. As a result, the structures of the first and second synchronous swing arms are relatively simple, and they can smoothly rotate and slide within the first and second guide grooves, and can smoothly drive the first synchronous gear to rotate relative to the support base, reducing costs and increasing the stability of the rotation mechanism.

[0032] In some embodiments, the second guide groove includes a third portion and a fourth portion, the third portion being connected to the fourth portion and arranged at an angle; the third portion is inclined relative to the center plane and tilted toward the center plane; the fourth portion is inclined relative to the center plane and tilted away from the center plane; the center plane extends along the length of the support base and is parallel to the thickness of the support base. The opening of the second guide groove is located in the fourth portion and faces the center plane.

[0033] The angle between the third portion of the second guide groove and the center plane is an acute angle ranging from 55 degrees to 65 degrees. The angle between the fourth portion of the second guide groove and the third portion is ranging from 85 degrees to 100 degrees.

[0034] Within the same X-axis space, compared to arranging the third portion of the second guide groove perpendicular to the O1 plane, tilting the third portion toward the O1 plane increases the length of the third portion of the second guide groove. This increases the sliding travel of the second sliding rod by utilizing the space along the Z axis within the limited width-wise sliding travel. This ensures that, while the second swing arm is relatively short, the second sliding rod remains within the third portion of the second guide groove during sliding, preventing it from dislodging, thus enhancing the stability of the rotation mechanism.

[0035] In some embodiments, a second blocking block is provided at the slot opening of the second guide slot; the second blocking block is located in the third portion and blocks a portion of the slot opening of the second guide slot; the second guide slot includes a second slot bottom surface and a second slot top surface spaced apart from each other, the second slot top surface being located on the second blocking block, and the second sliding rod being located between the second slot top surface and the second slot bottom surface; the second slot bottom surface and the second slot top surface are both inclined relative to the center plane, and the inclination direction is toward the center plane. The second slot bottom surface and the second slot top surface are specifically arranged in parallel.

[0036] The included angles between the second groove bottom and top surfaces and the O1 plane are acute, ranging from 55 to 65 degrees. This causes the third portion of the second guide groove to tilt toward the O1 plane, thereby extending the third portion of the second guide groove within the limited X-axis space. This prevents the second sliding rod from sliding out of the space between the second groove bottom and top surfaces, and in turn, from sliding out of the third portion of the second guide groove, thereby increasing the stability of the rotation mechanism.

[0037] In some embodiments, the groove wall surface of the second guide groove also includes a third guide side surface and a fourth guide side surface, and the third guide side surface and the fourth guide side surface are respectively connected to the two opposite sides of the second groove bottom surface along the width direction of the rotating mechanism; the third guide side surface is spaced from the second blocking block to form an opening of the second guide groove, and the opening of the second guide groove forms a second installation gap; the second sliding rod extends into the second guide groove from the second installation gap and abuts against the fourth guide side surface.

[0038] The second blocking block includes a second end surface facing the third guide side surface, and the second end surface is spaced apart from the third guide side surface to form a second installation gap. When assembling the rotating mechanism, the second installation gap allows the second sliding rod to extend into the third portion of the second guide groove, thereby increasing the convenience of assembling the mechanism.

[0039] In some embodiments, the fourth guide side surface is arc-shaped and smoothly connected to the bottom surface of the second groove. Thus, when the second sliding rod slides in the third portion of the second guide groove and moves to contact the fourth guide side surface, or moves from the fourth guide side surface to the bottom surface of the second groove, wear on the second sliding rod can be reduced, thereby extending the life of the second sliding rod and increasing the stability of the rotation mechanism.

[0040] In some embodiments, the third guide side surface is inclined relative to the center plane, and the inclination direction is opposite to the center plane. After the second sliding rod passes through the second installation gap, it can continue to move along the extension direction of the third guide side surface to enter the third portion of the second guide groove. Thus, the inclination of the third guide side surface opposite to the O1 plane makes it easier for the second sliding rod to enter the third portion of the second guide groove, thereby increasing the convenience of assembling the rotation mechanism.

[0041] In some embodiments, the third guide side surface is at least partially arcuate and smoothly connected to the bottom surface of the second groove. Thus, when the second sliding rod slides in the third portion of the second guide groove and approaches the third guide side surface, wear on the second sliding rod can be reduced, thereby extending the life of the second sliding rod and increasing the stability of the rotation mechanism.

[0042] In some embodiments, the second guide groove further includes a third guide wall and a fourth guide wall, the third guide wall and the fourth guide wall being respectively connected to opposite sides of the bottom surface of the second groove along the length direction of the rotating mechanism; the third guide wall is spaced from the second blocking block to form a third gap; the fourth guide wall is spaced from the second blocking block to form a fourth gap; the third gap and the fourth gap are used to avoid the second swing arm;

[0043] The second swing arm includes a third synchronous swing arm and a fourth synchronous swing arm; the third synchronous swing arm and the fourth synchronous swing arm are respectively located at opposite ends of the second sliding rod, and the length directions of the third synchronous swing arm and the fourth synchronous swing arm intersect with the length direction of the second sliding rod; the third synchronous swing arm cooperates with the third gap, and the fourth synchronous swing arm cooperates with the fourth gap.

[0044] The second blocking block further includes a third side opposite the third guide wall, and the third side of the second blocking block is spaced opposite to the third guide wall of the second guide groove along the Y-axis direction, forming the aforementioned third gap. The second blocking block further includes a fourth side opposite to the fourth guide wall, and the fourth side of the second blocking block is spaced opposite to the fourth guide wall of the second guide groove along the Y-axis direction, forming the aforementioned fourth gap. The third gap, the second blocking block, and the fourth gap are arranged in sequence along the Y-axis direction, and the third gap and the fourth gap are symmetrically distributed on both sides of the second blocking block.

[0045] The third gap provides clearance for the third synchronous swing arm, preventing interference with the second swing plate, allowing it to swing smoothly. The fourth gap also provides clearance for the fourth synchronous swing arm, preventing interference with the second swing plate, allowing it to swing smoothly. This increases the reliability and stability of the rotating mechanism.

[0046] The second swing arm includes a third synchronous swing arm and a fourth synchronous swing arm. Compared with setting the second swing arm as an integrally formed plate, the second swing arm is lighter.

[0047] In some embodiments, the second swing arm is an integrally formed rectangular parallelepiped plate, and the length of the second swing arm along the Y-axis is substantially the same as that of the second sliding rod. This facilitates the processing of the second swing arm and reduces the number of parts of the rotating mechanism.

[0048] In some embodiments, the third synchronous swing arm includes a third base, a third bent section, and a third connecting arm, which are fixed in sequence. The third base and the third connecting arm are located on opposite sides of the third bent section along the length of the support base, and the third base and the third bent section form an angle, and the third connecting arm and the third bent section form an angle. The third synchronous swing arm is generally Z-shaped, with the third base and the third bent section being substantially perpendicular, the third bent section and the third connecting arm being substantially perpendicular, the third base extending in the positive direction of the X-axis, and the third connecting arm extending in the negative direction of the X-axis.

[0049] The fourth synchronous swing arm includes a fourth base, a fourth bent section, and a fourth connecting arm, which are fixed in sequence. The fourth base and the fourth connecting arm are located on opposite sides of the fourth bent section along the length of the support base, and an angle is formed between the fourth base and the fourth bent section, and between the fourth connecting arm and the fourth bent section. The fourth synchronous swing arm is generally Z-shaped, with the fourth base and the fourth bent section being substantially perpendicular, the fourth bent section and the fourth connecting arm being substantially perpendicular, the fourth base extending in the positive direction of the X-axis, and the fourth connecting arm extending in the negative direction of the X-axis.

[0050] The two ends of the second sliding rod are fixedly connected to the ends of the third base and the fourth base respectively; the third base is located in the third gap, and the fourth base is located in the fourth gap; the second synchronous gear is fixedly connected to the end of the third connecting arm and the end of the fourth connecting arm, and the third connecting arm and the fourth connecting arm are located in the second guide groove.

[0051] Therefore, the structures of the third synchronous swing arm and the fourth synchronous swing arm are relatively simple, and can smoothly rotate and slide in the second guide groove and the second guide groove, and can smoothly drive the second synchronous gear to rotate relative to the bearing base, reducing costs and increasing the stability of the rotation mechanism operation.

[0052] In some embodiments, the synchronization assembly further includes a first elastic member, a second elastic member, a first connecting rod and a second connecting rod; the first connecting rod and the second connecting rod are both fixedly connected to the supporting base, the first synchronization member further includes a first sliding member; the second synchronization member further includes a second sliding member.

[0053] The first synchronous gear is rotatably connected to the first connecting rod, and the first elastic member, the first sliding member and the second sliding member are all slidably connected to the first connecting rod; the first elastic member is located between the first sliding member and the second sliding member; the second synchronous gear is rotatably connected to the second connecting rod, and the second elastic member, the first sliding member and the second sliding member are all slidably connected to the second connecting rod; the second elastic member is located between the first sliding member and the second sliding member.

[0054] The first swing arm rotates to drive the first synchronous gear to rotate, and the first synchronous gear drives the first sliding member and the second sliding member to move in a direction approaching or away from each other, so that the first sliding member and the second sliding member synchronously compress or release the two ends of the first elastic member; the second swing arm rotates to drive the second synchronous gear to rotate, and the second synchronous gear drives the first sliding member and the second sliding member to move in a direction approaching or away from each other, so that the first sliding member and the second sliding member synchronously compress or release the two ends of the second elastic member.

[0055] In some embodiments, the first synchronization gear is located at the end of the first swing arm away from the first sliding rod, and the second synchronization gear is located at the end of the second swing arm away from the second sliding rod. The first synchronization gear includes a first gear and a second gear, and the first gear and the second gear are both rotatably connected to the supporting base and arranged along the length direction of the rotating mechanism; the second synchronization gear includes a third gear and a fourth gear, and the third gear and the fourth gear are both rotatably connected to the supporting base and arranged along the length direction of the rotating mechanism. The synchronization assembly also includes a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are both fixedly connected to the supporting base; the first gear and the second gear are both rotatably connected to the first connecting rod, and the third gear and the fourth gear are both rotatably connected to the second connecting rod; the first gear engages with the third gear, and the second gear engages with the fourth gear.

[0056] Among them, the axial directions of the first connecting rod and the second connecting rod are both parallel to the Y-axis direction, and the first connecting rod and the second connecting rod are fixed to the supporting base in parallel and spaced apart along the X-direction. In this application, no intermediate gear is set between the first gear and the third gear, nor is an intermediate gear set between the second gear and the fourth gear. Instead, the first gear is directly meshed with the third gear, and the second gear is directly meshed with the fourth gear. Therefore, the distance between the axis of the first connecting rod and the axis of the second connecting rod is the distance between the rotation centers of the first synchronizer and the second synchronizer. Not only does this reduce the number of parts, but the distance between the rotation centers of the first synchronizer and the second synchronizer is closer, which reduces the space occupied by the entire rotating mechanism in the X-axis direction and improves the structural compactness of the rotating mechanism. In addition, the meshing of the two sets of gears makes the traditional synchronization performance of the rotating mechanism more stable.

[0057] In some embodiments, the synchronization assembly further includes a first elastic member and a second elastic member; the first synchronization member further includes a first sliding member; the second synchronization member further includes a second sliding member. The first sliding member and the second sliding member are both slidably connected to the first connecting rod and the second connecting rod; the first sliding member and the second sliding member are both located between the first gear and the second gear and mesh with the first gear and the second gear, respectively; the first sliding member and the second sliding member are both located between the third gear and the fourth gear and mesh with the third gear and the fourth gear, respectively; the first elastic member is sleeved on the first connecting rod, and the second elastic member is sleeved on the second connecting rod; the first elastic member and the second elastic member are both located between the first sliding member and the second sliding member.

[0058] When the first swing arm rotates, it drives the first gear and the second gear to rotate. The first gear drives the first sliding member to slide in the first direction, and the second gear drives the second sliding member to slide in the second direction, so that the first sliding member and the second sliding member are synchronously compressed or released to rebound the two ends of the first elastic member. When the second swing arm rotates, it drives the third gear and the fourth gear to rotate. The third gear drives the first sliding member to slide in the first direction, and the fourth gear drives the second sliding member to slide in the second direction, so that the first sliding member and the second sliding member are synchronously compressed or released to rebound the two ends of the second elastic member, with the first direction and the second direction being opposite.

[0059] When the rotating mechanism switches from the unfolded state to the folded state, the first swing arm drives the first synchronous gear to rotate, which in turn drives the first and second sliding members closer together, thereby causing the first and second sliding members to synchronously compress the ends of the first elastic member. Simultaneously, the second swing arm drives the second synchronous gear to rotate, which in turn drives the first and second sliding members closer together, thereby causing the first and second synchronous members to synchronously compress the ends of the second elastic member.

[0060] Specifically, the first synchronous swing arm drives the first gear to rotate, the second synchronous swing arm drives the second gear to rotate, the first gear drives the first sliding member to slide in the negative direction of the Y-axis, and the second gear drives the second sliding member to slide in the positive direction of the Y-axis. At this time, the first sliding member and the second sliding member approach each other, causing the first sliding member and the second sliding member to synchronously compress the two ends of the first elastic member. At the same time, the third synchronous swing arm drives the third gear to rotate, and the fourth synchronous swing arm drives the fourth gear to rotate. The third gear drives the first sliding member to slide in the negative direction of the Y-axis, and the fourth gear drives the second sliding member to slide in the positive direction of the Y-axis. At this time, the first sliding member and the second sliding member approach each other, causing the first synchronous member and the second synchronous member to synchronously compress the two ends of the second elastic member. The compression of the first and second elastic members generates a damping force, thereby allowing the user to experience a damping feel.

[0061] When the rotating mechanism switches from the folded state to the unfolded state, the first swing arm drives the first synchronous gear to rotate, which in turn drives the first and second sliding members away from each other, causing the first and second sliding members to simultaneously release the ends of the first elastic member. At this time, the ends of the first elastic member rebound synchronously, generating a damping force. At the same time, the second swing arm drives the second synchronous gear to rotate, which in turn drives the first and second sliding members away from each other, causing the first and second synchronous members to simultaneously release the ends of the second elastic member. At this time, the ends of the second elastic member rebound synchronously, generating a damping force. This allows the user to experience a damping feel.

[0062] Specifically, the first synchronous swing arm drives the first gear to rotate, the second synchronous swing arm drives the second gear to rotate, the first gear drives the first slide to slide in the positive direction of the Y-axis, and the second gear drives the second slide to slide in the negative direction of the Y-axis. At this time, the first slide and the second slide move away from each other, thereby causing the first and second slides to synchronously release the two ends of the first elastic member. At the same time, the third synchronous swing arm drives the third gear to rotate, and the fourth synchronous swing arm drives the fourth gear to rotate. The third gear drives the first slide to slide in the positive direction of the Y-axis, and the fourth gear drives the second slide to slide in the negative direction of the Y-axis. At this time, the first slide and the second slide move away from each other, thereby causing the first and second synchronizers to synchronously release the two ends of the second elastic member.

[0063] Compared to solutions where only one end of the elastic member is compressed or released, both ends of the first and second elastic members are compressed or released simultaneously, providing double the damping force. This reduces the number of elastic members and gears in the synchronizer assembly while still providing the same damping force as a synchronizer assembly with four elastic members, ensuring a consistent damping feel. This also simplifies the synchronizer assembly structure and reduces its weight. With fewer components, assembly precision requirements are lowered, thereby reducing assembly costs.

[0064] In some embodiments, the first sliding member includes a first slider, a first concave cam and a second concave cam, the first concave cam and the second concave cam are both fixedly connected to a surface of the first slider, and the first slider is slidably connected to the first connecting rod and the second connecting rod; the second sliding member includes a second slider, a third concave cam and a fourth concave cam; the third concave cam and the fourth concave cam are both fixedly connected to a surface of the second slider, and the second slider is slidably connected to the first connecting rod and the second connecting rod.

[0065] The first synchronizer also includes a fifth concave cam and a sixth concave cam; the fifth concave cam is fixedly connected to the end of the first gear, and the sixth concave cam is fixedly connected to the end of the second gear. The second synchronizer also includes a seventh concave cam and an eighth concave cam; the seventh concave cam is fixedly connected to the end of the third gear, and the eighth concave cam is fixedly connected to the end of the fourth gear. The fifth concave cam engages with the first concave cam, the sixth concave cam engages with the third concave cam, the seventh concave cam engages with the second concave cam, and the eighth concave cam engages with the fourth concave cam.

[0066] When the rotating mechanism switches from the deployed state to the folded state, the first swing arm (the first and second synchronous swing arms) drives the first and second gears to rotate, causing the first protrusion of the first concave cam to gradually move out of the fifth recess of the fifth concave cam until the first protrusion abuts the end of the fifth protrusion. The third protrusion of the third concave cam gradually moves out of the sixth recess of the sixth concave cam until the third protrusion abuts the end of the sixth protrusion, thereby causing the first and second sliding members to slide toward each other, thereby synchronously compressing the ends of the first elastic member. Simultaneously, the second swing arm (the third and fourth synchronous swing arms) drives the third and fourth gears to rotate, causing the second protrusion of the second concave cam to gradually move out of the seventh recess of the seventh concave cam until the second protrusion abuts the end of the seventh protrusion. The fourth protrusion of the fourth concave cam gradually moves out of the eighth recess of the eighth concave cam until the fourth protrusion abuts the end of the eighth protrusion.

[0067] When the rotating mechanism switches from the folded to the unfolded state, the first swing arm (the first and second synchronous swing arms) drives the first and second gears to rotate, causing the first protrusion of the first concave cam to gradually move into the fifth recess of the fifth concave cam; the third protrusion of the third concave cam to gradually move into the sixth recess of the sixth concave cam. Simultaneously, the second swing arm (the third and fourth synchronous swing arms) drives the third and fourth gears to rotate, causing the second protrusion of the second concave cam to gradually move into the seventh recess of the seventh concave cam; and the fourth protrusion of the fourth concave cam to gradually move into the eighth recess of the eighth concave cam.

[0068] In some embodiments, the swing assembly further includes a first main swing arm and a second main swing arm; the first main swing arm includes a first swinging member and a first rotating member fixedly connected; the first swinging member is fixedly connected to the first swing plate, and the first rotating member is slidably and rotationally connected to the support base. The second main swing arm includes a second swinging member and a second rotating member fixedly connected; the second swinging member is fixedly connected to the second swing plate, and the second rotating member is slidably and rotationally connected to the support base. The provision of the first and second main swing arms enables the first and second swing plates to rotate relative to the support base, thereby increasing the stability of the rotation mechanism.

[0069] In some embodiments, the first swing plate further comprises a first receiving groove; the second swing plate further comprises a second receiving groove; the first receiving groove and the second receiving groove correspond to and are connected to each other, forming a receiving chamber, and the supporting base is located in the receiving chamber, thereby increasing the structural compactness of the rotating mechanism.

[0070] In some embodiments, the first swing plate includes a first upper surface, a first lower surface, a first side surface, and a second side surface; the first upper surface and the first lower surface are opposite to each other along the thickness direction of the rotating mechanism, and the first side surface and the second side surface are opposite to each other along the width direction of the rotating mechanism; the second swing plate includes a second upper surface, a second lower surface, a third side surface, and a fourth side surface; the second upper surface and the second lower surface are opposite to each other along the thickness direction of the rotating mechanism, and the third side surface and the fourth side surface are opposite to each other along the width direction of the rotating mechanism; and the first side surface faces the third side surface; the first receiving groove is formed by the first upper surface being concave toward the first lower surface, and the first receiving groove passes through the first side surface; the second receiving groove is formed by the second upper surface being concave toward the second lower surface, and the second receiving groove passes through the third side surface.

[0071] In some embodiments, the first swing plate has a first upper surface, and the second swing plate has a second upper surface; the first guide groove is recessed in the first upper surface and the wall of the first receiving groove; and the second guide groove is recessed in the second upper surface and the wall of the second receiving groove. In other words, the first guide groove utilizes part of the space in the first receiving groove, thereby increasing the compactness of the structure.

[0072] The second aspect of the present application provides a foldable electronic device, comprising a first shell, a second shell, a display screen and a rotating mechanism according to any one of the first aspects of the present application, 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.

[0073] In this embodiment, by providing a rotating mechanism in which the first synchronous gear and the second synchronous gear are directly engaged, the complexity and volume of the rotating mechanism are reduced, thereby reducing the cost and volume of the foldable electronic device.

[0074] In summary, in the present application, the first synchronous gear of the first synchronizer directly meshes with the second synchronous gear of the second synchronizer. Compared with the technical solution of providing an intermediate gear in the prior art, this simplifies the structure of the rotation mechanism, reduces the weight of the rotation mechanism, reduces the difficulty of design and assembly, and is conducive to the lightweight design of the electronic device. In addition, the first synchronous gear of the first synchronizer directly meshes with the second synchronous gear of the second synchronizer to achieve synchronization. The synchronous transmission chain is shorter, the synchronization function is more stable, and it is not easy to fail, which improves the stability of the rotation mechanism when switching between the folded state and the unfolded state. In addition, the direct engagement method makes the distance between the rotation centers of the first synchronizer and the second synchronizer closer, reducing the space occupied by the entire rotation mechanism in the X-axis direction and improving the structural compactness of the rotation mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] 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.

[0076] Figure 1 This is a schematic structural diagram of the foldable electronic device provided in an embodiment of the present application in a first state.

[0077] Figure 2 This is a schematic structural diagram of the foldable electronic device provided in an embodiment of the present application in the second state.

[0078] Figure 3 yes Figure 2 Schematic diagram of the exploded structure of the foldable electronic device shown.

[0079] Figure 4 yes Figure 3 The structural diagram of the rotating mechanism is shown in FIG.

[0080] Figure 5 yes Figure 4 Schematic diagram of the exploded structure of the rotating mechanism shown.

[0081] Figure 6 yes Figure 4 Partial exploded view of the rotating mechanism shown in .

[0082] Figure 7 yes Figure 6 Schematic diagram of the decomposed structure of the first synchronization component is shown in .

[0083] Figure 8 yes Figure 6 A schematic diagram of the partial structural decomposition of the first swing plate and the second swing plate of the swing assembly shown in FIG.

[0084] Figure 9 yes Figure 8A partially enlarged view of the first swing plate of the swing assembly, showing the specific structure of the first blocking block and the first guide groove.

[0085] Figure 10 yes Figure 9 A cross-sectional view of the swing assembly in the AA direction.

[0086] Figure 11 yes Figure 9 A cross-sectional view of the swing assembly in the BB direction.

[0087] Figure 12 yes Figure 8 A partially enlarged view of the second guide groove and the second blocking block of the swing assembly shown in FIG. , which shows the specific structure of the second blocking block and the second guide groove.

[0088] Figure 13 yes Figure 6 FIG2 is a partial structural diagram of a first synchronization component installed on a bearing base and a swing component, wherein the rotation mechanism is in an expanded state.

[0089] Figure 14 It is a partial structural diagram of the bearing base and the swing assembly.

[0090] Figure 15 yes Figure 6 , a structural diagram of a first synchronization component installed on a bearing base and a swing component is shown, wherein the rotating mechanism is in the process of switching from an unfolded state to a folded state.

[0091] Figure 16 yes Figure 6 , a schematic cross-sectional view of the structure of the first synchronization component connected to the bearing base and the swing component is shown, wherein the rotating mechanism is in an expanded state.

[0092] Figure 17 yes Figure 6 , a schematic cross-sectional view of the structure of the first synchronization component connected to the bearing base and the swing component is shown, wherein the rotating mechanism is in a folded state.

[0093] Figure 18 yes Figure 6 , a schematic structural diagram of the first synchronization component connecting the bearing base and the swing component is shown in the figure, wherein the rotating mechanism is in a folded state. DETAILED DESCRIPTION

[0094] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0095] The rotation mechanisms used in existing foldable electronic devices include a large number of components such as synchronous gears, resulting in a complex structure and considerable assembly difficulty. Furthermore, the weight and volume of the rotation mechanisms significantly impact the slimming and lightening design of the electronic devices. The rotation mechanisms and foldable electronic devices provided in the embodiments of the present application have fewer synchronous gears and a simpler structure, which reduces assembly difficulty, reduces the weight and volume of the rotation mechanisms, and facilitates the slimming and lightening design of the electronic devices.

[0096] See also Figure 1 and Figure 2 , Figure 1 is a structural diagram of the foldable electronic device 1000 provided in an embodiment of the present application in a first state, Figure 2 3 is a schematic structural diagram of the foldable electronic device 1000 provided in an embodiment of the present application in the second state.

[0097] Figure 1 The foldable electronic device 1000 is shown in a folded state. Figure 2 The foldable electronic device 1000 is shown in an unfolded state. Figure 2 The unfolded angle of the foldable electronic device 1000 is 180 degrees. The foldable electronic device 1000 includes, but is not limited to, a cell phone, a notebook computer, a tablet computer, a personal computer, a personal digital assistant, a wearable device, or a mobile device. In the embodiments of the present application, the foldable electronic device 1000 is described as a cell phone.

[0098] It should be noted that the angles illustrated in the embodiments of this application are allowed to have slight deviations. For example, Figure 2 The unfolding angle of the foldable electronic device 1000 shown as 180 degrees means that it 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.

[0099] For ease of description, the width direction of the foldable electronic device 1000 is defined as the X direction, the length direction of the foldable electronic device 1000 is defined as the Y direction, and the thickness direction of the foldable electronic device 1000 is defined as the Z direction. The X direction, the Y direction, and the Z direction are perpendicular to each other.

[0100] See also Figure 3 , Figure 3 yes Figure 2 Schematic diagram of the exploded structure of the foldable electronic device shown.

[0101] The foldable electronic device 1000 includes a main body 200 and a display screen 300, which is mounted on the main body 200. The display screen 300 includes a display surface and a mounting surface, which are arranged opposite to each other. The display surface is used to display text, images, videos, etc. The display screen 300 includes a first display portion 310, a second display portion 320, and a third display portion 330. The third display portion 330 is located between the first display portion 310 and the second display portion 320. The third display portion 330 is flexible and can be bent along the X direction. In this embodiment, the display screen 300 adopts a flexible display screen. The first display portion 310 and the second display portion 320 can actually be bent even when they are not fixed.

[0102] The main body 200 includes a first housing 210, a second housing 220, and a rotation mechanism 100. The first housing 210 is provided with a first mounting slot (not shown), and the second housing 220 is provided with a second mounting slot (not shown). The first mounting slot and the second mounting slot are connected to form a mounting slot. The rotation mechanism 100 is installed in the mounting slot and is fixedly connected to the first housing 210 and the second housing 220 to achieve a rotational connection between the first housing 210 and the second housing 220. The first housing 210 and the second housing 220 can rotate relative to each other via the rotation mechanism 100, allowing the main body 200 to switch between a folded state and an unfolded state.

[0103] The side of the first shell 210 and the second shell 220 facing away from the display screen 300 is the outer surface of the electronic device, and the side supporting the display screen 300 is the inner side. In fact, a supporting part is provided on the inner side of the first shell 210 and the second shell 220, and the supporting part encapsulates the gap. The display screen is mounted on the supporting part and supports the flexible display screen 300.

[0104] The display screen 300 is mounted on the main body 200, with the mounting surface fixedly connected to the main body 200. Specifically, the first housing 210 supports the first display portion 310, and the second housing 220 supports the second display portion 320. In other words, the first display portion 310 is mounted on the first housing 210, and the second display portion 320 is mounted on the second housing 220. The rotating mechanism 100 is positioned opposite the third display portion 330 to achieve folding of the display screen.

[0105] The relative rotation of the first housing 210 and the second housing 220 causes the main body 200 to be in the folded state. This means that the first housing 210 and the second housing 220 rotate via the rotation mechanism 100 and approach each other, with the surfaces of the first housing 210 and the second housing 220 supporting the display screen 300 facing each other. During use, when the main body 200 is in the fully folded state, the display screen 300 mounted on the first housing 210 and the second housing 220 are folded, and the display surface of the display screen 300 located on the first display portion 310 and the display surface located on the second display portion 320 partially or fully contact each other. The first shell 210 and the second shell 220 rotate relative to each other so that during the unfolding process of the main body 200 (the first shell 210 and the second shell 220 can remain at any angle, such as a 90-degree angle or a 120-degree angle between the first shell 210 and the second shell 220, that is, the display screen 300 is in a semi-expanded state), the first shell 210 and the second shell 220 rotate via the rotating mechanism 100 and move away from each other, and the angle between the first shell 210 and the second shell 220 becomes larger and larger until the first shell 210 and the second shell 220 rotate relative to each other so that the main body 200 is flattened and in the unfolded state. The angle between the first shell 210 and the second shell 220 can be close to or equal to 180 degrees. The first shell 210 and the second shell 220 are generally in a flat state. At the same time, the first shell 210 and the second shell 220 are relatively moved away from the display screen 300 and unfolded until the foldable electronic device 1000 is in the unfolded state, wherein the first shell 210 and the second shell 220 are relatively moved away from the display screen 300 and further unfolded until the foldable electronic device 1000 is in the unfolded state.

[0106] The first shell 210, the second shell 220 and the rotating mechanism 100 are arranged in sequence along the X direction, and the sum of the dimensions between the three is the dimension of the main body 200 in the X direction (including assembly tolerance and assembly gaps between the three). The dimension of the main body 200 in the X direction is the same as the dimension of the display screen 300 and the electronic device along the X direction, and the same here includes the allowable tolerance range. The first shell 210, the second shell 220 and the rotating mechanism 100 have the same dimensions along the Y direction, and the same dimensions can allow for assembly or production tolerances. The dimensions of the first shell 210, the second shell 220 and the rotating mechanism 100 along the Y direction are the dimensions of the main body 200 in the Y direction, and the dimensions of the main body 200 in the Y direction are the same as the dimensions of the display screen 300 and the foldable electronic device 1000 along the Y direction. Of course, the same here can also allow a small amount of deviation (assembly and production tolerances).

[0107] See Figure 2 and Figure 3The first shell 210 and the second shell 220 rotate relative to each other through the rotating mechanism 100. When the foldable electronic device 1000 is in the unfolded state, the display screen 300 has a large display area, realizing the large-screen display and operation functions of the foldable electronic device 1000, and improving the user experience. Figure 1 and Figure 3 When the foldable electronic device 1000 is in a folded state, the display screen 300 is located between the first shell 210 and the second shell 220. The first shell 210 and the second shell 220 protect the display surface of the display screen 300, which can greatly reduce the probability of the display screen 300 being damaged. The overall size is reduced, making it easy to carry.

[0108] It should be noted that the directional terms such as “top”, “bottom”, “left”, “right”, “front” and “back” used in the embodiment of the present application to describe the foldable electronic device 1000 are mainly based on the foldable electronic device 1000 in the attached Figure 2 and Figure 4 The display orientation is explained in the figure, with the positive direction of the Z axis as the "top" and "upper", the negative direction of the Z axis as the "bottom" and "lower", the positive direction of the X axis as the "right", the negative direction of the X axis as the "left", the positive direction of the Y axis as the "back", and the negative direction of the Y axis as the "front". It does not constitute a limitation on the orientation of the foldable electronic device 1000 in actual application scenarios.

[0109] See Figure 4 and Figure 5 , Figure 4 yes Figure 3 The structural diagram of the rotating mechanism shown in FIG; Figure 5 yes Figure 4 Schematic diagram of the exploded structure of the rotating mechanism shown.

[0110] The rotating mechanism includes a synchronous assembly 10, a swing assembly 20 and a supporting base 30. Both the synchronous assembly 10 and the swing assembly 20 are mounted on the supporting base 30, and both the swing assembly 20 and the synchronous assembly 10 can rotate relative to the supporting base 30 and can be converted between a folded state and an unfolded state.

[0111] In this embodiment, the supporting base 30 extends along the Y-axis. There are two synchronization assemblies 10, spaced apart along the Y-axis. The two synchronization assemblies 10 are respectively a first synchronization assembly 10a and a second synchronization assembly 10b. The first synchronization assembly 10a is located at the front side of the rotating mechanism and is connected to the front side of the supporting base 30. The second synchronization assembly 10b is located at the rear side of the rotating mechanism and is connected to the rear side of the supporting base 30. In other embodiments, there may be one, three, or more synchronization assemblies 10. This application does not limit the number of synchronization assemblies 10.

[0112] The swing assembly 20 specifically includes a first swing plate 21, a second swing plate 24, and two swing arms. Each swing arm includes a first main swing arm 27 and a second main swing arm 28. In other embodiments, there may be three or four swing arms, and the number is not limited.

[0113] The first swing plate 21 and the second swing plate 24 are located on opposite sides of the support base 30. The first swing plate 21 is slidably and rotatably connected to the first synchronization assembly 10a, and the second swing plate 24 is slidably and rotatably connected to the second synchronization assembly 10b. One swing arm is located at the front side of the rotation mechanism and is connected to the front side of the support base 30. The other swing arm is located at the rear side of the rotation mechanism and is connected to the rear side of the support base 30. The synchronization assembly 10 is located between the two swing arms. The first main swing arm 27 and the second main swing arm 28 of each swing arm are respectively fixed to the first swing plate 21 and the second swing plate 24, and the first main swing arm 27 and the second main swing arm 28 are respectively slidably and rotatably connected to the support base 30, thereby achieving a rotational connection between the first swing plate 21 and the second swing plate 24 and the support base 30.

[0114] The supporting base 30 includes a first portion 30a and a second portion 30b, which are symmetrical about the plane O2. The figure only shows the structure of the first portion 30a, and the structure of the second portion 30b refers to the relevant description of the first portion 30a.

[0115] In this embodiment, with reference to plane O1, which is the Z-axis, the first swing plate 21 and the second swing plate 24 are symmetrically arranged, and the first main swing arm 27 and the second main swing arm 28 are symmetrically arranged. Plane O1 is the center plane of the rotating mechanism 100 in the longitudinal direction (Y-axis direction), specifically the plane containing the central axis of the rotating mechanism 100 in the longitudinal direction and the central axis of the thickness direction. Plane O1 extends along the Y-axis and is parallel to the Z-axis. With reference to plane O2, which is the Z-axis, the first synchronizer assembly 10a and the second synchronizer assembly 10b are symmetrical. Plane O2 is the center plane of the rotating mechanism 100 in the width direction (X-axis direction), specifically the plane containing the central axis of the rotating mechanism 100 in the width direction and the central axis of the thickness direction. Along the Y-axis, the two swing arms are symmetrical, the supporting base 30 is symmetrical, the first swing plate 21 and the second swing plate 24 are both symmetrical, and the first synchronizer assembly 10a and the second synchronizer assembly 10b are symmetrically arranged. In other embodiments, the two symmetrical arrangements can be staggered, and the symmetrical structures can also be non-symmetrical.

[0116] See also Figure 6 and Figure 7 , Figure 6 yes Figure 4 Partial exploded view of the rotating mechanism shown in Figure 7 yes Figure 6, a schematic diagram of the exploded structure of the first synchronization assembly is shown in FIG. The first synchronization assembly 10a includes a first connecting rod 11, a second connecting rod 12, a first sliding member 13, a second sliding member 14, a first synchronization member 15, a second synchronization member 16, a first elastic member 17, and a second elastic member 18. The first connecting rod 11 and the second connecting rod 12 are both fixedly connected to a support base 30. The first elastic member 17 and the second elastic member 18 are both springs and are respectively mounted on the first connecting rod 11 and the second connecting rod 12. The first sliding member 13 is located on one side of the first connecting rod 11 and the second connecting rod 12, and the second sliding member 14 is located on the other side of the first connecting rod 11 and the second connecting rod 12. The first synchronization member 15 and the second synchronization member 16 are engaged, and both the first synchronization member 15 and the second synchronization member 16 are engaged with the first sliding member 13 and the second sliding member 14. The first elastic member 17 and the second elastic member 18 are clamped between the first sliding member 13 and the second sliding member 14 and are compressed by the sliding of the first sliding member 13 and the second sliding member 14 on the first connecting rod 11 and the second connecting rod 12. In other embodiments, both the first elastic member 17 and the second elastic member 18 may be elastic rubber sleeves.

[0117] When the first synchronizer assembly 10 a switches between the unfolded state and the folded state, the direction in which the first synchronizer 15 rotates relative to the supporting base 30 is opposite to the direction in which the second synchronizer 16 rotates relative to the supporting base 30 .

[0118] Specifically, when the first synchronizer assembly 10a switches from the folded state to the unfolded state, the first synchronizer 15 rotates counterclockwise relative to the support base 30, while the second synchronizer 16 rotates clockwise relative to the support base 30. When the first synchronizer assembly 10a switches from the unfolded state to the folded state, the first synchronizer 15 rotates clockwise relative to the support base 30, while the second synchronizer 16 rotates counterclockwise relative to the support base 30.

[0119] In this embodiment, refer to Figure 5 The second synchronizer assembly 10b includes a first connecting rod 11a, a second connecting rod 12a, a first sliding member 13a, a second sliding member 14a, a first synchronizer 15a, a second synchronizer 16a, a first elastic member 17a, and a second elastic member 18a. It should be noted that the structures of the components of the second synchronizer assembly 10b, the connections between the components, and the connections between the components and the supporting base 30 and the swing assembly 20 can be referred to the relevant description of the first synchronizer assembly 10a and will not be repeated here.

[0120] Please continue reading Figure 7The first connecting rod 11 includes a first rod body 111, a first stop platform 112, and a second stop platform 113. The first rod body 111 is fixedly connected to the first stop platform 112 and the second stop platform 113, and passes through the first stop platform 112 and the second stop platform 113 along the Y-axis direction. The portion of the first rod body 111 located between the first stop platform 112 and the second stop platform 113 forms a first connecting section 114. The portion of the first rod body 111 extending from the first stop platform 112 forms a second connecting section (not shown). The portion of the first rod body 111 extending from the second stop platform 113 forms a third connecting section 115. At least one of the first stop platform 112 and the second stop platform 113 is detachably fixed to the first rod body 111 to facilitate the rotational connection of other components to the first connecting section 114 of the first rod body 111 when assembling the rotating mechanism 100. In this embodiment, the second stopper 113 is detachably fixed to the first rod 111 , and the first stopper 112 is integrally formed with the first rod 111 .

[0121] The structure of the second connecting rod 12 is identical to that of the first connecting rod 11. The second connecting rod 12 includes a second rod body 121, a third stopper 122, and a fourth stopper 123. The second rod body 121 is fixedly connected to the third and fourth stopper 122, 123, and extends through the third and fourth stopper 122, 123 along the Y-axis. The portion of the second rod body 121 located between the third and fourth stopper 122, 123 forms a fourth connecting segment 124. The portion of the second rod body 121 extending beyond the third stopper 122 forms a fifth connecting segment (not shown). The portion of the second rod body 121 extending beyond the fourth stopper 123 forms a sixth connecting segment 125. At least one of the third and fourth stopper 122, 123 is detachably secured to the second rod body 121. This facilitates the rotational connection of other components to the fourth connecting segment 124 of the second rod body 121 during assembly of the rotating mechanism 100. In this embodiment, the fourth stopping platform 123 and the second rod body 121 are detachably fixed, and the third stopping platform 122 and the second rod body 121 are integrally formed.

[0122] In this embodiment, the first sliding member 13 includes a first slider 131, a first concave cam 132, and a second concave cam 133. The first slider 131 is provided with a first sliding hole 134 and a second sliding hole 135 extending along the Y-axis. The first concave cam 132 and the second concave cam 133 have identical structures and are both fixedly connected to a surface of the first slider 131. The first concave cam 132 is coaxial with the first sliding hole 134, and the second concave cam 133 is coaxial with the second sliding hole 135. The first concave cam 132 includes a plurality of first recesses (not labeled) and a plurality of first protrusions (not labeled), with the plurality of first recesses and the plurality of first protrusions being alternately arranged. The second concave cam 133 includes a plurality of second recesses (not labeled) and a plurality of second protrusions (not labeled), with the plurality of second recesses and the plurality of second protrusions being alternately arranged.

[0123] The structure of the second slider 14 is identical to that of the first slider 13. The second slider 14 includes a second slider 141, a third concave cam 142, and a fourth concave cam 143. The second slider 141 is provided with a third sliding hole 144 and a fourth sliding hole 145 extending along the Y-axis. The third concave cam 142 and the fourth concave cam 143 are identical in structure and are fixedly connected to a surface of the second slider 141. The third concave cam 142 is coaxial with the third sliding hole 144, while the fourth concave cam 143 is coaxial with the fourth sliding hole 145. The third concave cam 142 includes a plurality of third recesses (not labeled) and a plurality of third protrusions (not labeled), with the plurality of third recesses and the plurality of third protrusions alternating between them. The fourth concave cam 143 includes a plurality of fourth recesses (not labeled) and a plurality of fourth protrusions (not labeled), with the plurality of fourth recesses and the plurality of fourth protrusions alternating between them.

[0124] The first synchronous component includes a first sliding rod, a first swing arm, and a first synchronous gear. The first sliding rod, the first swing arm, and the first synchronous gear are fixed in sequence along the X-axis direction. That is, one end of the first swing arm is fixedly connected to the first sliding rod, and the other end of the first swing arm is fixedly connected to the first synchronous gear, and the axial direction of the first sliding rod is the same as the axial direction of the first synchronous gear. In some embodiments, the first swing arm is an integrally formed rectangular thin plate, and its length along the Y-axis direction is substantially the same as that of the first sliding rod; alternatively, the first swing arm includes a plurality of synchronous swing arms spaced apart along the Y-axis direction.

[0125] In a specific embodiment, continue to refer to Figure 6 and Figure 7 The first swing arm includes a first synchronous swing arm 152 and a second synchronous swing arm 153, and the first synchronous gear includes a first gear 154 and a second gear 155. The first synchronizer 15 also includes a fifth concave cam 156 and a sixth concave cam 157. The first sliding rod 151, the first synchronous swing arm 152, and the second synchronous swing arm 153 are connected to form a U-shape. Specifically, the ends of the first sliding rod 151 are fixedly connected to one end of the first synchronous swing arm 152 and the second synchronous swing arm 153, respectively. The first sliding rod 151, the first synchronous swing arm 152, and the first gear 154 are arranged along the X-axis. The first sliding rod 151, the second synchronous swing arm 153, and the second gear 155 are arranged along the X-axis, with the axial direction of the first gear 154 and the second gear 155 being along the Y-axis. The first sliding rod 151 extends along the Y-axis. That is, the axial directions of the first gear 154 and the second gear 155 are parallel to the axial direction of the first sliding rod 151.

[0126] The first and second synchronous swing arms 152, 153 have the same structure, both being roughly Z-shaped plates. The first synchronous swing arm 152 comprises a first base 152b and a first connecting arm 152a, which are connected by a first bent section 152c. The first base 152b and the first connecting arm 152a are located at opposite ends of the first bent section 152c, and the first base 152b and the first connecting arm 152a extend in parallel or substantially parallel directions. The second synchronous swing arm 153 comprises a second base 153b and a second connecting arm 153a, which are connected by a second bent section 153c. The second base 153b and the second connecting arm 153a are located at opposite ends of the second bent section 153c, and the second base 153b and the second connecting arm 153a extend in parallel or substantially parallel directions. As a result, when the first synchronous swing arm 152 and the second synchronous swing arm 153 are connected to the swing assembly 20 , they will not interfere with the relevant components of the swing assembly 20 .

[0127] The first gear 154 is fixedly connected to the end of the first synchronous swing arm 152 away from the first sliding rod 151, specifically to the end of the first connecting arm 152a. The second gear 155 has the same structure as the first gear 154 and is fixedly connected to the end of the second synchronous swing arm 153 away from the first sliding rod 151, specifically to the end of the second connecting arm 153a.

[0128] The first gear 154 has a first through-hole 158 extending along the Y-axis, and the second gear 155 has a second through-hole 159 extending along the Y-axis. The first through-hole 158 and the second through-hole 159 are coaxial. The fifth concave cam 156 is fixedly connected to a side surface of the first gear 154 and is coaxial with the first through-hole 158. The sixth concave cam 157 has the same structure as the fifth concave cam 156. The sixth concave cam 157 is fixedly connected to a side surface of the second gear 155 and is coaxial with the second through-hole 159. One side surface of the first gear 154 and one side surface of the second gear 155 are spaced opposite each other, and the fifth concave cam 156 and the sixth concave cam 157 are spaced opposite each other. The fifth concave cam 156 includes a plurality of fifth recesses (not labeled) and a plurality of fifth protrusions (not labeled), with the plurality of fifth recesses and the plurality of fifth protrusions being arranged alternately. The sixth concave cam 157 includes a plurality of sixth recesses (not labeled) and a plurality of sixth protrusions (not labeled), with the plurality of sixth recesses and the plurality of sixth protrusions being arranged alternately.

[0129] The second synchronizer includes a second sliding rod, a second swing arm, and a second synchronizer gear. The second sliding rod, the second swing arm, and the second synchronizer gear are fixed in sequence along the X-axis. Specifically, one end of the second swing arm is fixedly connected to the second sliding rod, and the other end of the second swing arm is fixedly connected to the second synchronizer gear. The axial direction of the second sliding rod is aligned with the axial direction of the second synchronizer gear. In some embodiments, the second swing arm is an integrally formed rectangular thin plate, and its length along the Y-axis is substantially the same as that of the second sliding rod. Alternatively, the second swing arm includes a plurality of synchronizer swing arms spaced apart along the Y-axis.

[0130] In a specific embodiment, continue to refer to Figure 6 and Figure 7 The structure of the second synchronizer 16 is identical to that of the first synchronizer 15 , wherein the second swing arm includes a third synchronizer arm 162 and a fourth synchronizer arm 163, and the second synchronizer gear includes a third gear 164 and a fourth gear 165. The second sliding rod 161, the third synchronizer arm 162, and the fourth synchronizer arm 163 are connected in a U-shape. Specifically, the ends of the second sliding rod 161 are fixedly connected to one end of the third synchronizer arm 162 and the fourth synchronizer arm 163, respectively. The second sliding rod 161, the third synchronizer arm 162, and the third gear 164 are arranged along the X-direction, while the second sliding rod 161, the fourth synchronizer arm 163, and the fourth gear 165 are arranged along the X-direction, with the axial direction of the third gear 164 and the fourth gear 165 being along the Y-axis. The second sliding rod 161 extends along the Y-axis. That is, the axial directions of the third gear 164 and the fourth gear 165 are parallel to the axial direction of the second sliding rod 161.

[0131] The third and fourth synchronous swing arms 162 and 163 have the same structure, both being roughly Z-shaped plates. The third synchronous swing arm 162 comprises a third base 162b and a third connecting arm 162a, which are connected by a third bent section 162c. The third base 162b and the third connecting arm 162a are located at opposite ends of the third bent section 162c, and the third base 162b and the third connecting arm 162a extend in parallel or substantially parallel directions. The fourth synchronous swing arm 163 comprises a fourth base 163b and a fourth connecting arm 163a, which are connected by a fourth bent section 163c. The fourth base 163b and the fourth connecting arm 163a are located at opposite ends of the fourth bent section 163c, and the fourth base 163b and the fourth connecting arm 163a extend in parallel or substantially parallel directions. As a result, when the third synchronous swing arm 162 and the fourth synchronous swing arm 163 are connected to the swing assembly 20 , they will not interfere with the relevant components of the swing assembly 20 .

[0132] The third gear 164 is fixedly connected to the end of the third synchronous swing arm 162 away from the second sliding rod 161, specifically to the end of the third connecting arm 162a. The fourth gear 165 has the same structure as the third gear 164 and is fixedly connected to the end of the fourth synchronous swing arm 163 away from the second sliding rod 161, specifically to the end of the fourth connecting arm 163a.

[0133] The third gear 164 has a third through-hole 168 extending along the Y-axis, and the fourth gear 165 has a fourth through-hole 169 extending along the Y-axis. The third through-hole 168 and the fourth through-hole 169 are coaxial. The seventh concave cam 166 is fixedly connected to a side surface of the third gear 164 and is coaxial with the third through-hole 168. The eighth concave cam 167 has the same structure as the seventh concave cam 166. The eighth concave cam 167 is fixedly connected to a side surface of the fourth gear 165 and is coaxial with the fourth through-hole 169. One side surface of the third gear 164 and one side surface of the fourth gear 165 are spaced opposite each other, and the seventh concave cam 166 and the eighth concave cam 167 are spaced opposite each other. The seventh concave cam 166 includes a plurality of seventh recesses (not shown) and a plurality of seventh protrusions (not shown), with the plurality of seventh recesses and the plurality of seventh protrusions being arranged alternately. The eighth concave cam 167 includes a plurality of eighth recesses (not shown) and a plurality of eighth protrusions (not shown), with the plurality of eighth recesses and the plurality of eighth protrusions being arranged alternately.

[0134] See also Figure 6 The support base 30 has a top surface 303. A connecting groove 31, a first escape groove 32, and a second escape groove 33 are defined on the top surface 303 of the first portion 30a. The connecting groove 31, the first escape groove 32, and the second escape groove 33 are used to connect to the first synchronizer assembly 10a. The top surface of the second portion 30b also has a connecting groove, a first escape groove, and a second escape groove. The connecting groove, the first escape groove, and the second escape groove of the second portion 30b are used to connect to the second synchronizer assembly 10b.

[0135] The first avoidance groove 32 and the second avoidance groove 33 are located on both sides of the connecting groove 31 along the X-axis direction and are connected to the connecting groove 31. The first end wall 311 is provided with a first connecting hole 313 and a second connecting hole 314, and the second end wall 312 is provided with a third connecting hole (not shown) and a fourth connecting hole (not shown). The first connecting hole 313 and the third connecting hole are coaxial, and the second connecting hole 314 and the fourth connecting hole are coaxial. The bottom surface of the connecting groove 31 is provided with a limiting groove 36, and there are four limiting grooves 36, which are respectively the first limiting groove 36a, the second limiting groove 36b, the third limiting groove 36c and the fourth limiting groove 36d. The groove wall surface of each limiting groove 36 includes a first limiting surface, a second limiting surface and an arc-shaped limiting bottom surface.

[0136] See Figure 8 , Figure 8 yes Figure 6 The diagram shows a partial structural decomposition diagram of the first and second swing plates of the swing assembly. The first swing plate 21 and the second swing plate 24 are long strips of plate, and their length direction is the same as the length direction of the supporting base 30. Two first guide grooves 22 are provided on one side of the first swing plate 21. The first guide groove 22 includes a first part and a second part. The first part is connected to the second part and is arranged at an angle. The first part is inclined relative to the O1 surface, and the inclination direction is toward the O1 surface. The second part is inclined relative to the center plane, and the inclination direction is away from the O1 surface. The O1 surface extends in the length direction (Y-axis direction) of the supporting base 30 and is parallel to the thickness direction (Z-axis direction) of the supporting base 30. The opening of the first guide groove 22 is located in the second part and faces the O1 surface. The first part and the second part are arranged along the X-axis direction, and the second part faces the supporting base 30.

[0137] Two first blocking blocks 23 are respectively provided at the slot openings of the two first guide grooves 22. The first blocking blocks 23 are located in the first part and block part of the slot opening of the first guide groove 22. The other part of the slot opening of the first guide groove 22 (the part of the slot opening not blocked by the first blocking blocks 23) forms the opening of the first guide groove 22.

[0138] The two first guide grooves 22 are symmetrically arranged about the symmetry plane O2. One of the first guide grooves 22 and the first blocking block 23 is used to cooperate with the first synchronizer assembly 10a, specifically, the first sliding rod 151, the first synchronizer swing arm 152, and the second synchronizer swing arm 153 of the first synchronizer 15. The other first guide groove 22 and the first blocking block 23 are used to cooperate with the second synchronizer assembly 10b, specifically, the first sliding rod, the first synchronizer swing arm, and the second synchronizer swing arm of the first synchronizer 15a.

[0139] In this embodiment, the first swing plate 21 includes a first upper surface 211, a first lower surface 212, a first side surface 213, a second side surface 214, a first end surface, and a second end surface 215. The first upper surface 211 and the first lower surface 212 are disposed opposite each other along the Z direction, the first side surface 213 and the second side surface 214 are disposed opposite each other along the X direction, and the first end surface and the second end surface 215 are disposed opposite each other along the Y direction. The first side surface 213, the second side surface 214, the first end surface, and the second end surface 215 are connected in sequence end to end, and the first side surface 213, the second side surface 214, the first end surface, and the second end surface 215 are all connected between the first upper surface 211 and the first lower surface 212.

[0140] The first swing plate 21 also includes a first receiving groove 217 and two first fixing grooves 218. The first receiving groove 217 is used to accommodate the supporting base 30. The first receiving groove 217 and the first fixing groove 218 are sequentially distributed along the X-direction on the first upper surface 211 and are connected. The first receiving groove 217 is formed by the first upper surface 211 being recessed toward the first lower surface 212. The first receiving groove 217 passes through the first side surface 213 and extends along the Y-direction. The first fixing groove 218 is formed by the first upper surface 211 being recessed toward the first lower surface 212. It has a rectangular outline and extends along the Y-direction. The two first fixing grooves 218 are spaced apart along the Y-direction and are symmetrically arranged about the O2 plane. The two first fixing grooves 218 are respectively used to securely connect the first main swing arms 27 of the two swing arms.

[0141] The first receiving groove 217 is connected to the first upper surface 211. The first guide groove 22 is recessed between the first upper surface 211 and the first receiving groove 217. The first blocking block 23 is formed by extending from the first upper surface 211 toward the groove opening of the first guide groove 22.

[0142] Continue reading Figure 8 The second swing plate 24 is a long, strip-shaped structure, symmetrically arranged with respect to the first swing plate 21 about plane O1. Its structure is identical to that of the first swing plate 21 and is also symmetrical about plane O1. The second swing plate 24 includes a second upper surface 241, a second lower surface 242, a third side surface 243, a fourth side surface 244, a third end surface, and a fourth end surface 245.

[0143] The second swing plate 24 also includes a second receiving groove 247 and two second fixing grooves 248. The second receiving groove 247 is used to accommodate the supporting base 30. The groove wall of the second receiving groove 247 is connected to the second upper surface 241. The second guide groove 25 is recessed in the second upper surface 241 and the groove wall of the second receiving groove 247. The second blocking block 26 extends from the second upper surface 241 toward the groove opening of the second guide groove 25.

[0144] See also Figures 9 to 11 , Figure 9 yes Figure 8 A partially enlarged view of the first swing plate of the swing assembly, showing the specific structure of the first blocking block and the first guide groove. Figure 10 yes Figure 9 The AA-direction cross-sectional view of the swing assembly, Figure 11 yes Figure 9A cross-sectional view of the swing assembly along the BB direction. The first guide groove 22 is generally elongated. The groove wall surfaces of the first guide groove 22 include a first guide wall surface 221 and a second guide wall surface 222 that are opposite in the Y direction, a first guide side surface 223 and a second guide side surface 224 that are opposite in the X direction, a notch that is opposite in the Z direction, and a first groove bottom surface 225. The first guide wall surface 221 and the second guide wall surface 222 are both planar. The first guide side surface 223 and the second guide side surface 224 are offset in the Z direction and are at least partially arcuate. The first groove bottom surface 225 is planar, and both sides of the first groove bottom surface 225 are smoothly connected to the first guide side surface 223 and the second guide side surface 224, respectively.

[0145] See Figure 11 The first guide side surface 223 is inclined relative to the O1 plane, and the inclination direction is away from the O1 plane. This causes the second portion of the first guide groove 22 to be inclined relative to the O1 plane, and the inclination direction is away from the O1 plane, facilitating assembly of the rotating mechanism 100. The first groove bottom surface 225 is inclined relative to the O1 plane, and the inclination direction is toward the O1 plane. The angle between the first groove bottom surface 225 and the O1 plane is a first angle. The first angle is an acute angle and ranges from 55 to 65 degrees. Specifically, values ​​can be 55, 57, 59, 60, 62, 64, or 65 degrees. The angle between the first groove bottom surface 225 and the first guide side surface 223 is a second angle. The second angle ranges from 85 to 100 degrees. Specifically, values ​​can be 85, 87, 88, 89, 90, 92, 95, 97, or 100 degrees.

[0146] The first blocking block 23 extends from the second guide side surface 224 toward the first guide side surface 223. A portion of the first blocking block 23 extends into the interior of the first guide groove 22 and defines a first groove top surface 232. The first groove top surface 232 also serves as a groove wall of the first guide groove 22. The first groove top surface 232 is parallel to and spaced apart from the first groove bottom surface 225. In other words, the first groove top surface 232 is inclined relative to the O1 plane, and the inclination direction is toward the O1 plane. Consequently, the first portion of the first guide groove 22 is inclined relative to the O1 plane, and the inclination direction is toward the O1 plane.

[0147] The first blocking block 23 also has a first upper wall 231 opposite the first groove top surface 232, and a first side 233, a first end surface 234, and a second side 235 connected sequentially between the first upper wall 231 and the first groove top surface 232. The first side 233 and the second side 235 face each other, and the first side 233 and the first guide wall 221 are spaced apart to form a first gap 227, while the second side 235 and the second guide wall 222 are spaced apart to form a second gap 227a. The first end surface 234 and the first guide side surface 223 are spaced apart to form an opening of the first guide groove 22. This opening of the first guide groove 22 forms a first installation gap 226, which allows the first sliding rod 151, the first synchronous swing arm 152, and the second synchronous swing arm 153 of the first synchronizer 15 to pass through. The first gap 227, the second gap 227a, and the first blocking block 23 are located in the first portion of the first guide slot 22 and are arranged sequentially along the Y-axis. The first installation gap 226 is located in the second portion of the first guide slot 22.

[0148] refer to Figure 12 , Figure 12 yes Figure 8 The partially enlarged view of the second guide groove and the second baffle block of the swing assembly shown in the figure shows the specific structure of the second baffle block and the second guide groove. The second swing plate 24 is provided with two second guide grooves 25 on the side facing the supporting base. The second guide groove 25 includes a third part and a fourth part. The third part is connected to the fourth part and is arranged at an angle. The third part is inclined relative to the O1 surface, and the inclination direction is toward the O1 surface. The fourth part is inclined relative to the center plane, and the inclination direction is away from the O1 surface. The O1 surface extends in the length direction (Y-axis direction) of the supporting base 30 and is parallel to the thickness direction (Z-axis direction) of the supporting base 30. The opening of the first guide groove 22 is located in the fourth part and faces the O1 surface. The third part and the fourth part are arranged along the X-axis direction, and the fourth part faces the supporting base 30.

[0149] Two second blocking blocks 26 are respectively provided at the slot openings of the two second guide grooves 25. The second blocking blocks 26 block part of the slot openings of the second guide grooves 25, and the other part of the slot openings of the second guide grooves 25 (the part of the slot openings not blocked by the second blocking blocks 26) forms the openings of the second guide grooves 25.

[0150] One of the second guide grooves 25 and the second blocking block 26 is designed to cooperate with the first synchronizer assembly 10a, specifically the second sliding rod 161, third synchronizer swing arm 162, and fourth synchronizer swing arm 163 of the second synchronizer 16. The other second guide groove 25 and the second blocking block 26 are designed to cooperate with the second synchronizer assembly 10b, specifically the second sliding rod, third synchronizer swing arm, and fourth synchronizer swing arm of the second synchronizer 16a. The structure of the second guide groove 25 is identical to that of the first guide groove 22 and is symmetrical about plane O1.

[0151] The second guide groove 25 is generally elongated. Its walls include a third guide wall 251 and a fourth guide wall 252 that oppose each other along the Y direction, a third guide side surface 253 and a fourth guide side surface 254 that oppose each other along the X direction, a notch that opposes each other along the Z direction, and a second groove bottom surface 255. The third guide wall 251 and the fourth guide wall 252 are both planar. The third guide side surface 253 and the fourth guide side surface 254 are offset in the Z direction and at least partially arcuate. The second groove bottom surface 255 is planar, with both sides of the second groove bottom surface 255 smoothly connected to the third guide side surface 253 and the fourth guide side surface 254, respectively.

[0152] The third guide side surface 253 is inclined relative to the O1 plane, with the inclination direction facing away from the O1 plane. The second groove bottom surface 255 is inclined relative to the O1 plane, with the inclination direction facing the O1 plane. The angle between the second groove bottom surface 255 and the O1 plane is acute. The angle between the second groove bottom surface 255 and the third guide side surface 253 is approximately right.

[0153] The second blocking block 26 extends from the fourth guide side surface 254 toward the third guide side surface 253 and has a second groove top surface 262. The second groove top surface 262 also serves as a groove wall of the second guide groove 25. The second groove top surface 262 is parallel to and spaced apart from the second groove bottom surface 255. In other words, the second groove top surface 262 is inclined relative to the O1 plane, and the inclination direction is toward the O1 plane.

[0154] The second blocking block 26 also has a second upper wall 261 disposed opposite the second groove top surface 262, and a third side 263, a second end surface 264, and a fourth side 265 connected sequentially between the second upper wall 261 and the second groove top surface 262. The third side 263 and the fourth side 265 are disposed opposite each other, forming a third gap 257 with the third guide wall 251, and a fourth gap 257a with the fourth guide wall 252. The second end surface 264 and the third guide side surface 253 form the opening of the second guide groove 25. The opening of the second guide groove 25 forms a second installation gap 256, which allows the second sliding rod 161, the third synchronization swing arm 162, and the fourth synchronization swing arm 163 of the second synchronizer 16 to pass through. The third gap 257 , the fourth gap 257 a and the second blocking block 26 are located in the third portion of the second guide groove 25 , and are arranged sequentially along the Y-axis. The second installation gap 256 is located in the fourth portion of the second guide groove 25 .

[0155] The following takes a first guide groove 22 of the first swing plate 21 as an example to describe in detail the matching relationship between the first guide groove 22 and the first sliding rod 151 , the first synchronous swing arm 152 and the second synchronous swing arm 153 .

[0156] See also Figure 13 , Figure 13 yes Figure 6 The diagram shows a partial structure of the first synchronization component installed on the support base and the swing component, in which the rotation mechanism is in the deployed state. The first synchronization component 10a is installed in the connection groove 31 of the first portion 30a of the support base 30 and is slidably and rotationally connected to the first swing plate 21 of the swing component 20. The first connecting rod 11 and the second connecting rod 12 are parallel and fixedly connected to the support base 30 at intervals. Specifically, the second connecting section of the first connecting rod 11 is fixed in the first connecting hole 313 of the first end wall 311, and the third connecting section 115 of the first connecting rod 11 is fixed in the third connecting hole of the second end wall 312. The fifth connecting section of the second connecting rod 12 is fixed in the second connecting hole 314 of the first end wall 311, and the sixth connecting section 125 of the second connecting rod 12 is fixed in the fourth connecting hole of the second end wall 312.

[0157] The first elastic member 17 is mounted on the first connecting section 114 of the first connecting rod 11, and the second elastic member 18 is mounted on the fourth connecting section 124 of the second connecting rod 12. Both the first and second elastic members 17, 18 are located between the first and second sliding members 13, 14. The ends of the first and second elastic members 17, 18 are slightly compressed, providing a preload force for the rotating mechanism 100. In other words, the first and second elastic members 17, 18 are not in their natural state, ensuring the proper functioning of the rotating mechanism 100.

[0158] The first sliding member 13 slidably connects the first connecting rod 11 and the second connecting rod 12, and the second sliding member 14 slidably connects the first connecting rod 11 and the second connecting rod 12. Specifically, the first sliding member 13 slidably connects the first connecting segment 114 of the first rod body 111 of the first connecting rod 11 and slidably connects the fourth connecting segment 124 of the second rod body 121 of the second connecting rod 12. The second sliding member 14 slidably connects the first connecting segment 114 of the first connecting rod 11 and the fourth connecting segment 124 of the second connecting rod 12.

[0159] Specifically, the first connecting section 114 of the first connecting rod 11 sequentially passes through the first through-hole 158 of the first gear 154, the first sliding hole 134 of the first slider 131, the first elastic member 17, the third sliding hole 144 of the second slider 141, and the second through-hole 159 of the second gear 155. The fourth connecting section 124 of the second connecting rod 12 sequentially passes through the third through-hole 168 of the third gear 164, the second sliding hole 135 of the first slider 131, the second elastic member 18, the fourth sliding hole 145 of the second slider 141, and the fourth through-hole 169 of the fourth gear 165.

[0160] The first and second synchronous swing arms 152, 153 of the first synchronizer 15 extend from the first avoidance slot 32 into the connecting slot 31 and are slidably and rotationally connected to the first swing plate 21 of the swing assembly 20. The first gear 154 and the second gear 155 of the first synchronizer 15 are respectively rotationally connected to the first connecting section 114 of the first connecting rod 11. The first and second gears 154, 155 are respectively located within the first and second limiting slots 36a, 36b, and their respective ends along the Y-axis abut against the corresponding first and second limiting surfaces, thereby limiting the shaking of the first and second gears 154, 155 in the Y-direction and enhancing rotational stability. The fifth concave cam 156 of the first synchronizer 15 engages with the first concave cam 132 of the first sliding member 13, and the sixth concave cam 157 of the first synchronizer 15 engages with the third concave cam 142 of the second sliding member 14.

[0161] The third and fourth synchronous swing arms 162, 163 of the second synchronizer 16 extend from the second avoidance slot 33 into the connecting slot 31 and are slidably and rotationally connected to the second swing plate 24 of the swing assembly 20. The third and fourth gears 164, 165 of the second synchronizer 16 are respectively rotationally connected to the fourth connecting segment 124 of the second rod body 121 of the second connecting rod 12. The third and fourth gears 164, 165 are respectively located within the third and fourth limiting slots 36c, 36d, respectively. Opposing ends of the third and fourth gears 164, 165 along the Y-axis abut against the corresponding first and second limiting surfaces, thereby limiting the Y-direction movement of the third and fourth gears 164, 165 and enhancing rotational stability. The seventh concave cam 166 of the second synchronizer 16 engages the second concave cam 133 of the first slider 13, while the eighth concave cam 167 of the second synchronizer 16 engages the fourth concave cam 143 of the second slider 14.

[0162] The first gear 154 of the first synchronizer 15, the fifth concave cam 156 of the first synchronizer 15, the first concave cam 132 of the first slider 13, the first slide block 131 of the first slider 13, the first elastic member 17, the second slide block 141 of the second slider 14, the third concave cam 142 of the second slider 14, the sixth concave cam 157 of the first synchronizer 15, and the second gear 155 of the first synchronizer 15 are arranged in sequence along the Y-axis. The side of the first gear 154 of the first synchronizer 15 facing away from the fifth concave cam 156 abuts against the first stop 112 of the first connecting rod 11, and the side of the second gear 155 of the first synchronizer 15 facing away from the sixth concave cam 157 abuts against the second stop 113 of the first connecting rod 11. In other words, the first stop 112 and the second stop 113 limit the position of the first gear 154, the first slider 13, the first elastic member 17, the second slider 14, and the second gear 155.

[0163] The third gear 164 of the second synchronizer 16, the seventh concave cam 166 of the second synchronizer 16, the second concave cam 133 of the first slider 13, the first slider 131 of the first slider 13, the second elastic member 18, the second slider 141 of the second slider 14, the fourth concave cam 143 of the second slider 14, the eighth concave cam 167 of the second synchronizer 16, and the fourth gear 165 of the second synchronizer 16 are arranged sequentially along the Y-axis. The side of the third gear 164 of the second synchronizer 16 facing away from the seventh concave cam 166 abuts against the third stop 122 of the second connecting rod 12, and the side of the fourth gear 165 of the second synchronizer 16 facing away from the eighth concave cam 167 abuts against the fourth stop 123 of the second connecting rod 12. In other words, the third stop 122 and the fourth stop 123 limit the first gear 154, the first slider 13, the first elastic member 17, the second slider 14, and the second gear 155.

[0164] Regardless of the state of the rotating mechanism 100, the first gear 154 and the third gear 164 are always engaged, and the second gear 155 and the fourth gear 165 are always engaged. Furthermore, the first gear 154 and the third gear 164 rotate in opposite directions, and the second gear 155 and the fourth gear 165 rotate in opposite directions. As a result, the first synchronizer 15 and the second synchronizer 16 can rotate synchronously, thereby causing the swing assembly 20 to rotate synchronously, and the swing assembly 20 drives the first housing 210 and the second housing 220 to fold or unfold relative to each other. In this embodiment, the first gear 154 of the first synchronizer 15 and the third gear 164 of the second synchronizer 16 are directly engaged, and the second gear 155 of the first synchronizer 15 and the fourth gear 165 of the second synchronizer 16 are directly engaged. Compared to the prior art technical solution of providing an intermediate gear, this simplifies the structure of the rotating mechanism 100, reduces the weight of the rotating mechanism 100, and reduces the difficulty of design and assembly, thereby facilitating the lightweight design of the electronic device.

[0165] Continue reading Figure 13 The first concave cam 132 engages with the fifth concave cam 156, the second concave cam 133 engages with the seventh concave cam 166, the third concave cam 142 engages with the sixth concave cam 157, and the fourth concave cam 143 engages with the eighth concave cam 167. Specifically, the first protrusion of the first concave cam 132 is located within the fifth concave portion of the fifth concave cam 156, and the fifth protrusion is located within the first concave portion. The second protrusion is located within the seventh concave portion, and the seventh protrusion is located within the second concave portion. The third protrusion is located within the sixth concave portion, and the sixth protrusion is located within the third concave portion. The fourth protrusion is located within the eighth concave portion, and the eighth protrusion is located within the fourth concave portion. The first swing plate 21 and the second swing plate 24 are in an expanded and positioned state relative to the supporting base 30.

[0166] The number, distribution, shape, and size of the first to fourth and fifth to eighth protrusions are identical, thereby ensuring greater meshing stability between the first, second, third, and fourth concave cams 132, 133, 142, and 143 and the fifth, seventh, and sixth concave cams 157, 167, respectively.

[0167] The second synchronization component 10b is connected to the connecting groove, the first avoidance groove and the second avoidance groove of the second part 30b of the supporting base 30. The connection relationship thereof refers to the description of the connecting groove 31, the first avoidance groove 32 and the second avoidance groove 33 of the first synchronization component 10a and the first part 30a of the supporting base 30.

[0168] See again Figure 13The first sliding rod 151, the first synchronous swing arm 152, and the second synchronous swing arm 153 are installed in the first guide groove 22. Specifically, the first base 152b of the first synchronous swing arm 152 is located in the first gap 227, and the second base 153b of the second synchronous swing arm 153 is located in the second gap 227a. The first sliding rod 151, the first connecting arm 152a of the first synchronous swing arm 152, and the second connecting arm 153a of the second synchronous swing arm 153 are installed in the first guide groove 22 through the first installation gap 226 and are slidable in the first guide groove 22. Specifically, the first sliding rod 151 is located in the first portion of the first guide groove 22, that is, between the first groove bottom surface 225 and the first groove top surface 232.

[0169] The second synchronizer 16 and its second guide groove 25 with the second swing plate 24 have the same structure and connection relationship as described above. Specifically, the second sliding rod 161, the third synchronized swing arm 162, and the fourth synchronized swing arm 163 are installed in the second guide groove 25. The third base 162b of the third synchronized swing arm 162 is located within the third gap 257, and the fourth base 163b of the fourth synchronized swing arm 163 is located within the fourth gap 257a. The second sliding rod 161, the third connecting arm 162a of the third synchronized swing arm 162, and the fourth connecting arm 163a of the fourth synchronized swing arm 163 are installed in the second guide groove 25 through the second installation gap 256 and are slidable within the second guide groove 25. Specifically, the second sliding rod 161 is located in the third portion of the second guide groove 25, that is, between the second groove bottom surface 255 and the second groove top surface 262.

[0170] See Figure 14 , Figure 14 This is a partial structural diagram of the support base and swing assembly. In this embodiment, the support base 30 is an integrated, elongated structure formed through assembly. The support base 30 includes a support plate and multiple fixing plates, which are fixedly mounted to the support plate. In other embodiments, the support base 30 is an integrally formed structural member to enhance its overall strength and ensure its structural stability.

[0171] The supporting base 30 includes a top surface 303, a bottom surface 304, a first side surface 305, and a second side surface 306. The top surface 303 and the bottom surface 304 are disposed opposite each other. The first side surface 305 and the second side surface 306 are respectively located on either side of the top surface 303 along the X-axis. The first side surface 305, the second side surface 306, and the top surface 303 are disposed parallel to each other. The height of the first side surface 305 and the second side surface 306 along the Z-axis is less than the height of the top surface 303. The first side surface 305 and the second side surface 306 are respectively connected to the bottom surface 304.

[0172] In this embodiment, the connection groove 31 is formed by a top surface 303 that is recessed toward the bottom surface 304. The first avoidance groove 32 is formed by a recessed first side surface 305 and extends through the first end wall 311 of the connection groove 31 and the bottom surface 304 of the support base 30. The second avoidance groove 33 is formed by a recessed second side surface 306 and extends through the second end wall 312 of the connection groove 31 and the bottom surface 304 of the support base 30.

[0173] The first portion 30a of the support base 30 also includes a first sliding groove 34 and a second sliding groove 35. The bottom walls of the first and second sliding grooves 34, 35 are both curved and extend parallel to the X-axis. The first and second sliding grooves 34, 35 are used to connect to the swing assembly 20. The connecting groove 31, the first and second sliding grooves 34, 35 are opposed to each other along the X-direction and are staggered in the Y-direction.

[0174] Continue reading Figure 14 The first main swing arm 27 includes a first swinging body 271 and a first rotating body 272. In this embodiment, the first swinging body 271 is a rectangular thin plate structure. The first rotating body 272 is fixedly connected to the bottom surface of the first swinging body 271 and at least partially extends to the right side of the first swinging body 271. The first rotating body 272 includes a first rotating surface (not shown), which is arc-shaped and is used to cooperate with the arc-shaped bottom wall surface of the first sliding groove 34.

[0175] The structure of the second main swing arm 28 is similar to that of the first main swing arm 27. The second main swing arm 28 includes a second swinging member 281 and a second rotating member 282. The second rotating member 282 is fixedly connected to the bottom surface of the second swinging member 281 and is at least partially aligned with the side of the second swinging member 281 facing the first swinging member 271. The second rotating member 282 includes a second rotating surface (not shown). The second rotating surface is arcuate and is configured to mate with the arcuate bottom wall of the second sliding slot 35.

[0176] In this embodiment, the first swinging member 271 of the first main swinging arm 27 is mounted in the first fixing slot 218 of the first swinging plate 21 and is fixedly connected to the slot wall of the first fixing slot 218. The first rotating member 272 of the first main swinging arm 27 is located in the first sliding slot 34 and can slide and rotate within the first sliding slot 34.

[0177] The second swinging member 281 of the second main swinging arm 28 is mounted in the second fixed slot 248 of the second swinging plate 24 and is fixedly connected to the slot wall of the second fixed slot 248. The second rotating member 282 of the second main swinging arm 28 is located in the second sliding slot 35. The second rotating member 282 can slide and rotate within the second sliding slot 35. In this embodiment, the second rotating member 282 and the first rotating member 272 are staggered in the Y-axis direction, so that the first rotating member 272 and the second rotating member 282 respectively cooperate with the first sliding slot 34 and the second sliding slot 35. This prevents interference between the first rotating member 272 and the second rotating member 282, thereby increasing the compactness of the rotating mechanism 100. In other embodiments, the second rotating member 282 and the first rotating member 272 are arranged side by side and opposite each other in the X-axis direction.

[0178] In this embodiment, the first swing plate 21 is fixedly connected to the first housing, and the second swing plate 24 is fixedly connected to the second housing. The first swing member 271 of the first main swing arm 27 is fixedly connected to the first swing plate 21, and the first rotating member 272 of the first main swing arm 27 is slidably and rotatably connected to the support base 30. The second swing member 281 of the second main swing arm 28 is fixedly connected to the second swing plate 24, and the second rotating member 282 of the second main swing arm 28 is slidably and rotatably connected to the support base 30.

[0179] The second part 30b of the supporting base 30 is also provided with a first sliding groove and a second sliding groove, and another first main swing arm and a second main swing arm are respectively slidably connected to the first sliding groove and the second sliding groove of the second part 30b, and are respectively fixedly connected to another first fixed groove of the first swing plate 21 and another second fixed groove of the second swing plate 24.

[0180] After the swing assembly 20 is connected to the supporting base 30, when the rotating mechanism 100 is in the deployed state, the first receiving groove 217 of the first swing plate 21 and the second receiving groove 247 of the second swing plate 24 correspond to and communicate with each other, forming a receiving chamber. The supporting base 30 is located within the receiving chamber, which can increase the structural compactness of the rotating mechanism 100. The side surface of the supporting base 30 facing away from the connecting groove 31 is at least partially curved, and the wall surface of the receiving chamber is at least partially curved. This allows the first swing plate 21 and the second swing plate 24 to slide along the curved surface of the supporting base 30 when folded or unfolded relative to the supporting base 30, thereby improving the smoothness of the rotation of the first swing plate 21 and the second swing plate 24.

[0181] In this embodiment, when the first housing 210 rotates relative to the support base 30, it drives the first swing plate 21 to rotate relative to the support base 30, thereby driving the first swinging member 271 of the first main swing arm 27 to rotate relative to the support base 30 and causing the first rotating member 272 to rotate and slide within the first sliding groove 34. When the second housing 220 rotates relative to the support base 30, it drives the second swing plate 24 to rotate relative to the support base 30, thereby driving the second swinging member 281 of the second main swing arm 28 to rotate relative to the support base 30 and causing the second rotating member 282 to rotate and slide within the second sliding groove 35. The rotation direction of the first swing plate 21 is opposite to that of the second swing plate 24, and the rotation direction of the first swinging member 271 of the first main swing arm 27 is opposite to that of the second swinging member 281 of the second main swing arm 28.

[0182] In this embodiment, by providing a first swing plate 21 and a second swing plate 24, with the first swing plate 21 fixedly connected to the first housing and the second swing plate 24 fixedly connected to the second housing, the connection strength between the swing assembly 20 and the housing is increased, thereby improving the rotational stability of the foldable electronic device 1000. Furthermore, by providing a first main swing arm 27 and a second main swing arm 28, the first swing plate 21 and the second swing plate 24 are rotated relative to the supporting base 30, thereby improving the rotational stability of the rotating mechanism 100.

[0183] See Figure 15 , Figure 15 yes Figure 6 , a structural diagram of a first synchronization component installed on a bearing base and a swing component is shown, wherein the rotating mechanism is in the process of switching from an unfolded state to a folded state.

[0184] When the rotating mechanism 100 switches from the unfolded state to the folded state, the first swing plate 21, the first synchronous swing arm 152 of the first synchronizer 15, the second synchronous swing arm 153 of the first synchronizer 15, and the first swinging member 271 of the first main swing arm 27 rotate clockwise. The first sliding rod 151 of the first synchronizer 15 slides from left to right in the first portion of the first guide slot 22 and rotates. The first synchronous swing arm 152 drives the first gear 154 to rotate clockwise, while the second synchronous swing arm 153 drives the second gear 155 to rotate clockwise. The first gear 154 drives the fifth concave cam 156 to rotate clockwise, while the second gear 155 drives the sixth concave cam 157 to rotate clockwise. As a result, the fifth concave cam 156 pushes the first slider 131 in the negative direction of the Y-axis, while the sixth concave cam 157 pushes the second slider 141 in the positive direction of the Y-axis. In other words, the first slider 131 and the second slider 141 move toward each other. At this time, the first protrusion of the first concave cam 132 gradually moves out of the fifth recess of the fifth concave cam 156 until the first protrusion abuts against the end of the fifth protrusion. The third protrusion of the third concave cam 142 gradually moves out of the sixth recess of the sixth concave cam 157 until the third protrusion abuts against the end of the sixth protrusion.

[0185] The second swing plate 24, the third synchronous swing arm 162 of the second synchronizer 16, the fourth synchronous swing arm 163 of the second synchronizer 16, and the second swinging member 281 of the second main swing arm 28 rotate counterclockwise. The second sliding rod 161 of the second synchronizer 16 slides and rotates from the right to the left in the third portion of the second guide groove 25. The third synchronous swing arm 162 drives the third gear 164 to rotate counterclockwise, and the fourth synchronous swing arm 163 drives the fourth gear 165 to rotate counterclockwise. The first gear 154 meshes with the third gear 164, and the second gear 155 meshes with the fourth gear 165, thereby ensuring synchronized swinging of the first swing plate 21 and the second swing plate 24, and achieving synchronized rotation of the first and second housings. The third gear 164 drives the seventh concave cam 166 to rotate counterclockwise, and the fourth gear 165 drives the eighth concave cam 167 to rotate counterclockwise. The seventh concave cam 166 pushes the first slider 131 in the negative direction of the Y-axis, while the eighth concave cam 167 pushes the second slider 141 in the positive direction of the Y-axis. In other words, the first slider 131 and the second slider 141 move toward each other. At this time, the second protrusion of the second concave cam 133 gradually moves out of the seventh recess of the seventh concave cam 166 until the second protrusion abuts the end of the seventh protrusion. The fourth protrusion of the fourth concave cam 143 gradually moves out of the eighth recess of the eighth concave cam 167 until the fourth protrusion abuts the end of the eighth protrusion.

[0186] That is, when the rotating mechanism 100 switches from the unfolded state to the folded state, the first sliding member 13 and the second sliding member 14 slide toward each other under the drive of the first swing arm and the second swing arm. At this time, the two ends of the first elastic member 17 are gradually compressed synchronously, and the two ends of the second elastic member 18 are gradually compressed synchronously. During the gradual compression process of the first elastic member 17 and the second elastic member 18, damping force can be provided, thereby allowing the user to obtain a damping feel.

[0187] When the rotating mechanism 100 switches from the folded state to the unfolded state, the first swing plate 21, the first synchronous swing arm 152 of the first synchronizer 15, the second synchronous swing arm 153 of the first synchronizer 15, and the first swinging member 271 of the first main swing arm 27 rotate counterclockwise. The first sliding rod 151 of the first synchronizer 15 slides from right to left in the first portion of the first guide slot 22 and rotates. The first synchronous swing arm 152 drives the first gear 154 to rotate counterclockwise, while the second synchronous swing arm 153 drives the second gear 155 to rotate counterclockwise. The first gear 154 drives the fifth concave cam 156 to rotate counterclockwise, while the second gear 155 drives the sixth concave cam 157 to rotate counterclockwise. As a result, the fifth concave cam 156 pushes the first slider 131 in the positive direction of the Y-axis, while the sixth concave cam 157 pushes the second slider 141 in the negative direction of the Y-axis. In other words, the first slider 131 and the second slider 141 move away from each other. At this time, the first protrusion of the first concave cam 132 gradually moves into the fifth recess of the fifth concave cam 156. The third protrusion of the third concave cam 142 gradually moves into the sixth concave portion of the sixth concave cam 157 .

[0188] The second swing plate 24, the third synchronous swing arm 162 of the second synchronizer 16, the fourth synchronous swing arm 163 of the second synchronizer 16, and the second swinging member 281 of the second main swing arm 28 rotate clockwise. The second sliding rod 161 of the second synchronizer 16 slides and rotates from left to right in the third portion of the second guide groove 25. The third synchronous swing arm 162 drives the third gear 164 to rotate clockwise, while the fourth synchronous swing arm 163 drives the fourth gear 165 to rotate clockwise. The first gear 154 meshes with the third gear 164, and the second gear 155 meshes with the fourth gear 165, thereby ensuring synchronized swing of the first swing plate 21 and the second swing plate 24, and achieving synchronized rotation of the first and second housings. The third gear 164 drives the seventh concave cam 166 to rotate clockwise, while the fourth gear 165 drives the eighth concave cam 167 to rotate clockwise. The seventh concave cam 166 pushes the first slider 131 to move in the positive direction of the Y-axis, while the eighth concave cam 167 pushes the second slider 141 to move in the positive direction of the Y-axis. In other words, the first slider 131 and the second slider 141 move toward each other. At this time, the second protrusion of the second concave cam 133 gradually moves into the seventh recess of the seventh concave cam 166. The fourth protrusion of the fourth concave cam 143 gradually moves into the eighth recess of the eighth concave cam 167.

[0189] That is, when the rotating mechanism 100 switches from the folded state to the unfolded state, the first sliding member 13 and the second sliding member 14 slide away from each other under the drive of the first swing arm and the second swing arm. At this time, the two ends of the first elastic member 17 are gradually released synchronously, and the two ends of the first elastic member 17 rebound synchronously. The two ends of the second elastic member 18 are gradually released synchronously, and the two ends of the second elastic member 18 rebound synchronously. During the synchronous rebound process of the first elastic member 17 and the second elastic member 18, a damping force can be provided, and the damping force is twice that of the elastic member that rebounds at one end, thereby allowing the user to obtain a damping feel.

[0190] See also Figure 16 , Figure 16 yes Figure 6 , a schematic cross-sectional view of the structure of the first synchronization component connected to the bearing base and the swing component is shown, wherein the rotating mechanism is in an expanded state.

[0191] See also Figure 13 The first swing plate 21 and the second swing plate 24 are relatively flat. The first synchronous swing arm 152 of the first synchronizer 15 and the third synchronous swing arm 162 of the second synchronizer 16 are approximately 180 degrees apart. The second synchronous swing arm 153 of the first synchronizer 15 and the fourth synchronous swing arm 163 of the second synchronizer 16 are approximately 180 degrees apart.

[0192] The first base 152b of the first synchronous swing arm 152 is located within the first gap 227, and the second base 153b of the second synchronous swing arm 153 is located within the second gap 227a. The first connecting arm 152a of the first synchronous swing arm 152 and the second connecting arm 153a of the second synchronous swing arm 153 are both located within the first guide groove 22, specifically between the first groove bottom surface 225 and the first groove top surface 232. The first sliding rod 151 of the first synchronizer 15 is located at the leftmost side of the first portion of the first guide groove 22 and abuts against the second guide side surface 224 of the first guide groove 22. The third base 162b of the third synchronous swing arm 162 is located within the third gap 257, and the fourth base 163b of the fourth synchronous swing arm 163 is located within the fourth gap 257a. The third connecting arm 162a of the third synchronous swing arm 162 and the fourth connecting arm 163a of the fourth synchronous swing arm 163 are both located within the second guide groove 25, specifically between the second groove bottom surface 255 and the second groove top surface 262. The second sliding rod 161 of the second synchronizer 16 is located at the rightmost side of the third portion of the second guide groove 25 and abuts against the fourth guide side surface 254 of the second guide groove 25.

[0193] The first protrusion of the first concave cam 132 is located within the fifth concave portion of the fifth concave cam 156, and the fifth protrusion of the fifth concave cam 156 is located within the first concave portion of the first concave cam 132. The second protrusion of the second concave cam 133 is located within the seventh concave portion of the seventh concave cam 166, and the seventh protrusion of the seventh concave cam 166 is located within the second concave portion of the second concave cam 133. The third protrusion of the third concave cam 142 is located within the sixth concave portion of the sixth concave cam 157, and the sixth protrusion of the sixth concave cam 157 is located within the third concave portion of the third concave cam 142. The fourth protrusion of the fourth concave cam 143 is located within the eighth concave portion of the eighth concave cam 167, and the eighth protrusion of the eighth concave cam 167 is located within the fourth concave portion of the fourth concave cam 143.

[0194] Figure 17 and Figure 18 , Figure 17 yes Figure 6 , a schematic cross-sectional view of the structure of the first synchronization component connected to the bearing base and the swing component is shown, wherein the rotating mechanism is in a folded state. Figure 18 yes Figure 6 , a structural diagram of a first synchronization component mounted on a bearing base and a swing component is shown, wherein the rotating mechanism is in a folded state.

[0195] The first swing plate 21 and the second swing plate 24 are oriented at 0 degrees. The first synchronous swing arm 152 of the first synchronizer 15 and the third synchronous swing arm 162 of the second synchronizer 16 are oriented at 45 to 60 degrees. The second synchronous swing arm 153 of the first synchronizer 15 and the fourth synchronous swing arm 163 of the second synchronizer 16 are oriented at 45 to 60 degrees.

[0196] The first base 152b of the first synchronous swing arm 152 is located outside the first gap 227, and the second base 153b of the second synchronous swing arm 153 is located outside the second gap 227a. The first connecting arm 152a of the first synchronous swing arm 152 and the second connecting arm 153a of the second synchronous swing arm 153 are at least partially located outside the first guide groove 22. The first sliding rod 151 of the first synchronizer 15 is located at the rightmost side of the first portion of the first guide groove 22 and abuts the junction between the first guide side surface 223 and the first groove bottom surface 225 of the first guide groove 22. The third base 162b of the third synchronous swing arm 162 is located outside the third gap 257, and the fourth base 163b of the fourth synchronous swing arm 163 is located outside the fourth gap 257a. The third connecting arm 162a of the third synchronous swing arm 162 and the fourth connecting arm 163a of the fourth synchronous swing arm 163 are at least partially located outside the second guide groove 25, specifically between the second groove bottom surface 255 and the second groove top surface 262. The second sliding rod 161 of the second synchronizer 16 is located at the leftmost side of the third portion of the second guide groove 25 and abuts against the connection between the third guide side surface 253 and the second groove bottom surface 255 of the second guide groove 25 .

[0197] The first protrusion of the first concave cam 132 abuts the end of the fifth protrusion of the fifth concave cam 156. The second protrusion of the second concave cam 133 abuts the end of the seventh protrusion of the seventh concave cam 166. The third protrusion of the third concave cam 142 abuts the end of the sixth protrusion of the sixth concave cam 157. The fourth protrusion of the fourth concave cam 143 abuts the end of the eighth protrusion of the eighth concave cam 167.

[0198] In this embodiment, the first synchronous gear of the first synchronizer 15 directly meshes with the second synchronous gear of the second synchronizer 16. Specifically, the first gear 154 of the first synchronizer 15 directly meshes with the third gear 164 of the second synchronizer 16, and the second gear 155 of the first synchronizer 15 directly meshes with the fourth gear 165 of the second synchronizer 16. Compared to the technical solution of providing an intermediate gear in the prior art, this simplifies the structure of the rotating mechanism 100, reduces the weight of the rotating mechanism 100, and reduces the difficulty of design and assembly, thereby facilitating the lightweight design of the electronic device. In addition, the direct meshing of the first gear 154 of the first synchronizer 15 and the third gear 164 of the second synchronizer 16, and the direct meshing of the second gear 155 of the first synchronizer 15 and the fourth gear 165 of the second synchronizer 16 to achieve synchronization, shortens the synchronous transmission chain, makes the synchronization function more stable, and is less prone to failure, thereby improving the stability of the synchronizer assembly 10 when switching between the folded and unfolded states.

[0199] In addition, because the first gear 154 of the first synchronizer 15 directly meshes with the third gear 164 of the second synchronizer 16, and the second gear 155 of the first synchronizer 15 directly meshes with the fourth gear 165 of the second synchronizer 16, the rotational center axes of the first synchronizer 15 and the second synchronizer 16 are relatively close. The first synchronizer 15 and the second synchronizer 16 can be driven to switch the swing assembly 20 from the unfolded state to the folded state by rotating approximately 45 to 60 degrees. The first synchronizer 15 and the second synchronizer 16 do not need to rotate a large angle, thereby reducing wear on the first synchronizer 15 and the second synchronizer 16 and extending the life of the first synchronizer 15 and the second synchronizer 16.

[0200] The first synchronizer 15 and the second synchronizer 16 have a relatively small rotation angle, and when the rotating mechanism 100 is in the folded state, the angle between the first synchronizer 15 and the second synchronizer 16 is approximately between 45 and 60 degrees. In other words, when the rotating mechanism 100 is in the folded state, the first swing arm of the first synchronizer 15, namely the first synchronized swing arm 152 and the second synchronized swing arm 153, extend simultaneously in the width and thickness directions of the rotating mechanism 100, and the second swing arm of the second synchronizer 16, namely the third synchronized swing arm 162 and the fourth synchronized swing arm 163, extend simultaneously in the width and thickness directions of the rotating mechanism 100. Therefore, the lengths of the first and second swing arms, namely the first synchronized swing arm 152, the second synchronized swing arm 153, the third synchronized swing arm 162, and the fourth synchronized swing arm 163, are shorter than those in the prior art, thereby reducing the weight of the rotating mechanism 100 and facilitating a lightweight design of the rotating mechanism 100.

[0201] In this embodiment, within the same X-axis space, compared to setting the first portion of the first guide groove 22 perpendicular to the O1 plane, both the first groove top surface 232 and the first groove bottom surface 225 are inclined toward the O1 plane, thereby causing the first portion of the first guide groove 22 to be inclined toward the O1 plane, thereby increasing the length of the first portion of the first guide groove 22. Thus, within the limited width-direction sliding travel, the sliding travel of the first sliding rod 151 is increased by utilizing the space in the Z-axis direction. This ensures that the lengths of the first and second synchronous swing arms 152, 153 are relatively short, and that the first sliding rod 151 remains within the first portion of the first guide groove 22 during the sliding process, preventing it from disengaging from the first portion of the first guide groove 22 (between the first groove top surface 232 and the first groove bottom surface 225), thereby enhancing the stability of the rotation mechanism.

[0202] Setting the connection between the first guide side surface 223 and the first groove bottom surface 225 to an arc shape, and setting the second guide side surface 224 to an arc shape can reduce the wear on the first sliding rod 151, extend the service life of the first sliding rod 151, make the first sliding rod 151 slide more smoothly, and increase the stability of the operation of the rotating mechanism 100.

[0203] Within the same X-axis space, compared to arranging the second guide groove 25 perpendicular to the O1 plane, both the second groove top surface 262 and the second groove bottom surface 255 are inclined toward the O1 plane, thereby causing the third portion of the second guide groove 25 to be inclined toward the O1 plane, thereby increasing the length of the third portion of the second guide groove 25. This increases the sliding travel of the second synchronizer 16 by utilizing the space in the Z-axis within the limited width-direction sliding travel. While ensuring the short lengths of the third and fourth synchronizer swing arms 162 and 163, the first and second slide rods 151 and 161 remain within the third portion of the first guide groove 22 during sliding, preventing them from disengaging from the second guide groove 25, thereby enhancing the stability of the rotation mechanism.

[0204] Setting the connection between the third guide side surface 253 and the second groove bottom surface 255 to an arc shape, and setting the fourth guide side surface 254 to an arc shape can reduce the wear on the second sliding rod 161, extend the wear of the second sliding rod 161, make the second sliding rod 161 slide more smoothly, and increase the stability of the rotation mechanism 100.

[0205] Furthermore, during the transition of the rotating mechanism 100 from the unfolded state to the folded state, the first and second synchronizers 15 and 16 are able to rotate but remain relatively fixed in the Y-axis direction. Consequently, the fifth, sixth, seventh, and eighth concave cams 156, 157, 166, and 167 are relatively fixed in the Y-axis direction. The first and second sliders 13 and 14 are able to slide along the Y-axis but remain relatively fixed in the rotational direction of the first and second synchronizers 15 and 16. Therefore, the first, second, third, and fourth concave cams 132, 133, 142, and 143 respectively push the fifth, seventh, sixth, and eighth concave cams 156, 166, 157, and 167 in the negative Y-axis direction, thereby driving the first slider 131 of the first slider 13 to slide in the negative Y-axis direction and compress the first and second elastic members 17 and 18. Furthermore, the second slider 141 of the second slider 14 slides in the positive Y-axis direction and compresses the first and second elastic members 17 and 18. That is, the first sliding member 13 and the second sliding member 14 approach each other and simultaneously press the first elastic member 17 and the second elastic member 18 .

[0206] The strokes of the first sliding member 13 and the second sliding member 14 squeezing the first elastic member 17 and the second elastic member 18 are as follows: Assume that the heights of the first protrusion to the fourth protrusion and the fifth protrusion to the eighth protrusion along the Y-axis direction are all U. Figure 13When the first protrusion of the first concave cam 132, the second protrusion of the second concave cam 133, the third protrusion of the third concave cam 142, and the fourth protrusion of the fourth concave cam 143 are respectively located in the fifth recess of the fifth concave cam 156, the seventh recess of the seventh concave cam 166, the sixth recess of the sixth concave cam 157, and the eighth recess of the eighth concave cam 167, the distance between the surface of the first slider 131 facing away from the first concave cam 132 and the surface of the second slider 141 facing away from the third concave cam 142 is V.

[0207] See Figure 17 When the first protrusion of the first concave cam 132, the second protrusion of the second concave cam 133, the third protrusion of the third concave cam 142, and the fourth protrusion of the fourth concave cam 143 respectively abut the ends of the fifth protrusion of the fifth concave cam 156, the seventh protrusion of the seventh concave cam 166, the sixth protrusion of the sixth concave cam 157, and the eighth protrusion of the eighth concave cam 167, the distance between the surface of the first slider 131 facing away from the first concave cam 132 and the surface of the second slider 141 facing away from the third concave cam 142 is W, where W = V - 2U. In other words, the distance U moved by the first slider 13 in the negative direction of the Y axis is U, and the distance U moved by the second slider 14 in the positive direction of the Y axis is U.

[0208] The lengths of the first and second elastic members 17 and 18 before compression are both equal to the distance V between the surface of the first slider 131 facing away from the first concave cam 132 and the surface of the second slider 141 facing away from the third concave cam 142. The lengths of the first and second elastic members 17 and 18 after compression are both equal to the distance W between the surface of the first slider 131 facing away from the first concave cam 132 and the surface of the second slider 141 facing away from the third concave cam 142. Since W = V - 2U, the compressed stroke at both ends of the first elastic member 17 is U, and the compressed stroke at both ends of the second elastic member 18 is U.

[0209] Similarly, when the rotating mechanism 100 switches from the folded state to the unfolded state, the synchronous rebound strokes of both ends of the first elastic member 17 are both U, and the synchronous rebound strokes of both ends of the second elastic member 18 are both U.

[0210] As can be seen from the above, both ends of the first elastic member 17 and the second elastic member 18 are compressed or released synchronously. Compared to a solution in which only one end of the elastic member is compressed or released, both ends of the first elastic member 17 and the second elastic member 18 are compressed or released synchronously. Compared to a solution in which only one end of the elastic member is compressed or released, this can provide double the damping force. This allows the synchronizer assembly 10 to provide the same damping force as a synchronizer assembly with four elastic members while reducing the number of elastic members and gears. This simplifies the structure of the synchronizer assembly 10 and reduces its weight. With fewer components in the synchronizer assembly 10, the assembly precision requirements are reduced, thereby reducing assembly costs.

[0211] Furthermore, because both ends of the first elastic member 17 and the second elastic member 18 are compressed simultaneously, the height U of the first to fourth and fifth to eighth projections along the Y-axis can be smaller than in a scheme where only one end of the elastic member is compressed. Specifically, it can be half the height U of a scheme where only one end is compressed. This smaller height reduces wear on the first to fourth and fifth to eighth projections, thereby extending the lifespan of the first to fourth and fifth to eighth projections, and consequently, the lifespan of the first to fourth and fifth to eighth concave cams 132 to 143 and the fifth to eighth concave cams 156 to 167.

[0212] The following describes the assembly process of the rotating mechanism 100 in detail.

[0213] When assembling the rotation mechanism 100, the first sliding rod 151 of the first synchronizer 15 is inserted through the first installation gap 226 and into the first portion of the first guide groove 22 (between the first groove bottom surface 225 and the first groove top surface 232). Specifically, because the first guide side surface 223 is inclined away from the O1 plane, after passing through the first installation gap 226, the first sliding rod 151 can continue to move along the extension direction of the first guide side surface 223 to enter the first portion of the first guide groove 22. This indicates that the inclination of the first guide side surface 223 away from the O1 plane makes it easier for the first sliding rod 151 to enter the first portion of the first guide groove 22, thereby increasing the convenience of assembling the rotation mechanism 100.

[0214] The second sliding rod 161 of the second synchronizer 16 is passed through the second installation gap 256 and into the second guide groove 25. Specifically, the third guide side surface 253 is inclined away from the O1 plane. Therefore, after passing through the second installation gap 256, the second sliding rod 161 can continue to move along the extension direction of the third guide side surface 253 to enter the third portion of the second guide groove 25. Thus, the inclination of the third guide side surface 253 away from the O1 plane makes it easier for the second sliding rod 161 to enter the third portion of the second guide groove 25, thereby increasing the convenience of assembling the rotating mechanism 100.

[0215] Then, using a jig, the first slider 13 is aligned with the first gear 154 and the third gear 164, with the first concave cam 132 meshing with the fifth concave cam 156 and the third concave cam 142 meshing with the sixth concave cam 157. The second slider 14 is aligned with the second gear 155 and the fourth gear 165, with the second concave cam 133 meshing with the seventh concave cam 166 and the fourth concave cam 143 meshing with the eighth concave cam 167. The first elastic member 17 and the second elastic member 18 are then placed between the first slider 13 and the second slider 14. The first through hole 158 of the first gear 154, the first sliding hole 134 of the first slider 131, the hollow portion of the first elastic member 17, the third sliding hole 144 of the second slider 141, and the second through hole 159 of the second gear 155 are coaxial, and the third through hole 168 of the third gear 164, the second sliding hole 135 of the first slider 131, the second elastic member 18, the fourth sliding hole 145 of the second slider 141 and the fourth through hole 169 of the fourth gear 165 are coaxial. Then insert the first connecting rod 11 into the first through hole 158 of the first gear 154, the first sliding hole 134 of the first slider 131, the hollow part of the first elastic member 17, the third sliding hole 144 of the second slider 141, and the second through hole 159 of the second gear 155; and insert the second connecting rod 12 into the third through hole 168 of the third gear 164, the second sliding hole 135 of the first slider 131, the second elastic member 18, the fourth sliding hole 145 of the second slider 141 and the fourth through hole 169 of the fourth gear 165.

[0216] Remove the second stopper 113 from the first rod 111, and remove the fourth stopper 123 from the second rod 121. Then, install the synchronizing assembly 10 and the swing assembly 20 together on the supporting base 30. Specifically, insert the first connecting section 114 of the first connecting rod 11 into the first through-hole 158 of the first gear 154, the first sliding hole 134 of the first slider 131, the hollow portion of the first elastic member 17, the third sliding hole 144 of the second slider 141, and the second through-hole 159 of the second gear 155. Then, reinstall the second stopper 113 onto the first rod 111. At this point, the first and second stopper 112, 113 of the first connecting rod 11 restrain the first gear 154, the first slider 13, the first elastic member 17, the second slider 14, and the second gear 155, preventing them from sliding off the first connecting section 114 during assembly.

[0217] The fourth connecting section 124 of the second connecting rod 12 is inserted into the third through-hole 168 of the third gear 164, the second sliding hole 135 of the first slider 131, the second elastic member 18, the fourth sliding hole 145 of the second slider 141, and the fourth through-hole 169 of the fourth gear 165. The fourth stopper 123 is then reinstalled on the second rod 121. At this point, the third and fourth stopper 122, 123 of the second connecting rod 12 restrain the third gear 164, the first slider 131, the second elastic member 18, the second slider 141, and the fourth gear 165, preventing them from slipping off the fourth connecting section 124 during assembly.

[0218] Finally, align the connecting groove 31 of the supporting base 30 with the synchronization assembly 10, so that the synchronization assembly 10 is located in the connecting groove 31. The second connecting segment of the first connecting rod 11 is inserted into the first connecting hole 313 of the first end wall 311 and fixedly connected to the wall of the first connecting hole 313. The third connecting segment 115 of the first connecting rod 11 is inserted into the third connecting hole of the second end wall 312 of the connecting groove 31 and fixedly connected to the wall of the third connecting hole. The fifth connecting segment of the second connecting rod 12 is inserted into the second connecting hole 314 of the first end wall 311 and fixedly connected to the wall of the second connecting hole 314. The sixth connecting segment 125 of the second connecting rod 12 is inserted into the fourth connecting hole of the second end wall 312 of the connecting groove 31 and fixedly connected to the wall of the fourth connecting hole.

[0219] 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: Bearing base, swing assembly and synchronization assembly; The swing assembly includes a first swing plate and a second swing plate; the first swing plate and the second swing plate are respectively located on both sides of the bearing base along the width direction of the rotating mechanism; the first swing plate is provided with a first guide groove; the second swing plate is provided with a second guide groove, and at least portions of the first guide groove and the second guide groove are inclined relative to the center plane of the bearing base along the length direction, and the inclination direction is toward the center plane; The synchronization assembly includes a first synchronization member and a second synchronization member; The first synchronous member includes a first sliding rod, a first swing arm, and a first synchronous gear. One end of the first swing arm is fixedly connected to the first sliding rod, and the other end of the first swing arm is fixedly connected to the first synchronous gear. The axes of the first sliding rod and the first synchronous gear are parallel. The first synchronous gear is rotatably connected to the bearing base; the first sliding rod is located in the first guide groove; the first sliding rod can slide and rotate in the first guide groove to drive the first swing arm to rotate relative to the bearing base; The second synchronous member includes a second sliding rod, a second swing arm, and a second synchronous gear; one end of the second swing arm is fixedly connected to the second sliding rod, and the other end of the second swing arm is fixedly connected to the second synchronous gear, and the axial direction of the second sliding rod and the second synchronous gear are parallel; the second synchronous gear is rotatably connected to the supporting base and meshes with the first synchronous gear; the second sliding rod is located in the second guide groove; the second sliding rod can slide and rotate in the second guide groove to drive the second swing arm to rotate relative to the supporting base; The first guide groove includes a first portion and a second portion, the first portion is connected to the second portion and is arranged at an angle; the first portion is inclined relative to the central plane, and the inclination direction is toward the central plane; the second portion is inclined relative to the central plane, and the inclination direction is opposite to the central plane; the central plane extends along the length direction of the supporting base and is parallel to the thickness direction of the supporting base; The opening of the first guide groove is located in the second portion and faces the central plane; A first blocking block is provided at the notch of the first guide groove; the first blocking block is located in the first portion and blocks part of the notch of the first guide groove; The first guide groove includes a first groove bottom surface and a first groove top surface that are spaced apart and opposite to each other, the first groove top surface is located on the first blocking block, and the first sliding rod is located between the first groove bottom surface and the first groove top surface; The first groove bottom surface and the first groove top surface are both inclined relative to the central plane, and the inclination directions are both toward the central plane.

2. The rotation mechanism according to claim 1, characterized in that: The first guide groove also includes a first guide side surface and a second guide side surface, and the first guide side surface and the second guide side surface are respectively connected to the two opposite sides of the bottom surface of the first groove along the width direction of the rotating mechanism; the first guide side surface is spaced from the first blocking block to form an opening of the first guide groove, and the opening of the first guide groove forms a first installation gap; the first sliding rod extends into the first guide groove from the first installation gap and abuts against the second guide side surface.

3. The rotation mechanism according to claim 2, characterized in that: The second guide side surface is arc-shaped and smoothly connected to the bottom surface of the first groove.

4. The rotation mechanism according to claim 2, characterized in that: The first guide side surface is inclined relative to the central plane, and the inclination direction is away from the central plane.

5. The rotation mechanism according to claim 2, characterized in that: The first guide side surface is at least partially arc-shaped and smoothly connected to the first groove bottom surface.

6. The rotating mechanism according to any one of claims 1 to 5, characterized in that: The first guide slot further includes a first guide wall and a second guide wall, the first guide wall and the second guide wall being connected to opposite sides of the bottom surface of the first slot along the length direction of the rotating mechanism, respectively; the first guide wall is spaced from the first blocking block to form a first gap; the second guide wall is spaced from the first blocking block to form a second gap; both the first gap and the second gap are used to avoid the first swing arm; The first swing arm includes a first synchronous swing arm and a second synchronous swing arm, and the first synchronous swing arm and the second synchronous swing arm are respectively located at opposite ends of the first sliding rod, and the length directions of the first synchronous swing arm and the second synchronous swing arm both intersect with the length direction of the first sliding rod; the first synchronous swing arm cooperates with the first gap, and the second synchronous swing arm cooperates with the second gap.

7. The rotation mechanism according to claim 6, characterized in that: The first synchronous swing arm includes a first base, a first bent section, and a first connecting arm that are fixed in sequence; the first base and the first connecting arm are located on opposite sides of the first bent section along the length direction of the supporting base, and an angle is formed between the first base and the first bent section, and an angle is formed between the first connecting arm and the first bent section; The second synchronous swing arm includes a second base, a second bent section, and a second connecting arm fixed in sequence; the second base and the second connecting arm are located on opposite sides of the second bent section along the length direction of the supporting base, and an angle is formed between the second base and the second bent section, and an angle is formed between the second connecting arm and the second bent section; The two ends of the first sliding rod are respectively fixedly connected to the ends of the first base and the second base; the first base is located in the first gap, and the second base is located in the second gap; the first synchronous gear is fixedly connected to the end of the first connecting arm and the end of the second connecting arm, and the first connecting arm and the second connecting arm are both located in the first guide groove.

8. The rotating mechanism according to claim 1, wherein: The second guide groove includes a third portion and a fourth portion, the third portion is connected to the fourth portion and is arranged at an angle; the third portion is inclined relative to the central plane, and the inclination direction is toward the central plane; the fourth portion is inclined relative to the central plane, and the inclination direction is opposite to the central plane; the central plane extends along the length direction of the supporting base and is parallel to the thickness direction of the supporting base; The opening of the second guide groove is located in the fourth portion and faces the central plane.

9. The rotation mechanism according to claim 8, characterized in that: A second blocking block is provided at the notch opening of the second guide groove; the second blocking block is located in the third portion and blocks part of the notch opening of the second guide groove; The second guide groove includes a second groove bottom surface and a second groove top surface that are spaced apart and opposite to each other, the second groove top surface is located on the second blocking block, and the second sliding rod is located between the second groove top surface and the second groove bottom surface; The second groove bottom surface and the second groove top surface are both inclined relative to the central plane, and the inclination directions are both toward the central plane.

10. The rotating mechanism according to claim 9, characterized in that: The groove wall surface of the second guide groove also includes a third guide side surface and a fourth guide side surface, and the third guide side surface and the fourth guide side surface are respectively connected to the two opposite sides of the second groove bottom surface along the width direction of the rotating mechanism; the third guide side surface is spaced from the second blocking block to form an opening of the second guide groove, and the opening of the second guide groove forms a second installation gap; the second sliding rod extends into the second guide groove from the second installation gap and abuts against the fourth guide side surface.

11. The rotating mechanism according to claim 10, characterized in that: The fourth guide side surface is arc-shaped and smoothly connected to the bottom surface of the second groove.

12. The rotating mechanism according to claim 10, characterized in that: The third guide side surface is inclined relative to the central plane, and the inclination direction is away from the central plane.

13. The rotating mechanism according to claim 10, characterized in that: The third guide side surface is at least partially arc-shaped and smoothly connected to the bottom surface of the second groove.

14. The rotating mechanism according to any one of claims 9 to 13, characterized in that: The second guide groove further includes a third guide wall and a fourth guide wall, the third guide wall and the fourth guide wall being respectively connected to opposite sides of the bottom surface of the second groove along the length direction of the rotating mechanism; the third guide wall is spaced from the second blocking block to form a third gap; the fourth guide wall is spaced from the second blocking block to form a fourth gap; the third gap and the fourth gap are used to avoid the second swing arm; The second swing arm includes a third synchronous swing arm and a fourth synchronous swing arm; the third synchronous swing arm and the fourth synchronous swing arm are respectively located at opposite ends of the second sliding rod, and the length directions of the third synchronous swing arm and the fourth synchronous swing arm both intersect with the length direction of the second sliding rod; the third synchronous swing arm cooperates with the third gap, and the fourth synchronous swing arm cooperates with the fourth gap.

15. The rotating mechanism according to claim 14, characterized in that: The third synchronous swing arm includes a third base, a third bent section, and a third connecting arm fixed in sequence; the third base and the third connecting arm are located on opposite sides of the third bent section along the length direction of the supporting base, and an angle is formed between the third base and the third bent section, and an angle is formed between the third connecting arm and the third bent section; The fourth synchronous swing arm includes a fourth base, a fourth bent section, and a fourth connecting arm fixed in sequence; the fourth base and the fourth connecting arm are located on opposite sides of the fourth bent section along the length direction of the supporting base, and an angle is formed between the fourth base and the fourth bent section, and an angle is formed between the fourth connecting arm and the fourth bent section; The two ends of the second sliding rod are respectively fixedly connected to the ends of the third base and the fourth base; the third base is located in the third gap, and the fourth base is located in the fourth gap; the second synchronous gear is fixedly connected to the end of the third connecting arm and the end of the fourth connecting arm, and the third connecting arm and the fourth connecting arm are located in the second guide groove.

16. The rotating mechanism according to any one of claims 1 to 5, characterized in that: The synchronization assembly further includes a first elastic member, a second elastic member, a first connecting rod and a second connecting rod; the first connecting rod and the second connecting rod are both fixedly connected to the bearing base; the first synchronization member further includes a first sliding member; the second synchronization member further includes a second sliding member; The first synchronous gear is rotatably connected to the first connecting rod, and the first elastic member, the first sliding member, and the second sliding member are all slidably connected to the first connecting rod; the first elastic member is located between the first sliding member and the second sliding member; the second synchronous gear is rotatably connected to the second connecting rod, and the second elastic member, the first sliding member, and the second sliding member are all slidably connected to the second connecting rod; the second elastic member is located between the first sliding member and the second sliding member; The first swing arm rotates to drive the first synchronous gear to rotate, and the first synchronous gear drives the first sliding member and the second sliding member to move in a direction approaching or away from each other, so that the first sliding member and the second sliding member synchronously compress or release the two ends of the first elastic member; the second swing arm rotates to drive the second synchronous gear to rotate, and the second synchronous gear drives the first sliding member and the second sliding member to move in a direction approaching or away from each other, so that the first sliding member and the second sliding member synchronously compress or release the two ends of the second elastic member.

17. The rotating mechanism according to claim 16, characterized in that: The first synchronous gear is located at the end of the first swing arm away from the first sliding rod, and the second synchronous gear is located at the end of the second swing arm away from the second sliding rod; the first synchronous gear includes a first gear and a second gear; the second synchronous gear includes a third gear and a fourth gear; The first gear and the second gear are both rotatably connected to the first connecting rod, and the third gear and the fourth gear are both rotatably connected to the second connecting rod; the first gear meshes with the third gear, and the second gear meshes with the fourth gear.

18. The rotation mechanism according to claim 17, characterized in that: The first sliding member and the second sliding member are both located between the first gear and the second gear, and mesh with the first gear and the second gear respectively; the first sliding member and the second sliding member are both located between the third gear and the fourth gear, and mesh with the third gear and the fourth gear respectively; the first elastic member is sleeved on the first connecting rod, and the second elastic member is sleeved on the second connecting rod; the first elastic member and the second elastic member are both located between the first sliding member and the second sliding member; When the first swing arm rotates, the first gear and the second gear are driven to rotate. The first gear drives the first sliding member to slide in a first direction, and the second gear drives the second sliding member to slide in a second direction. This allows the first sliding member and the second sliding member to synchronously compress or release the two ends of the first elastic member. When the second swing arm rotates, it drives the third gear and the fourth gear to rotate, the third gear drives the first sliding member to slide along the first direction, and the fourth gear drives the second sliding member to slide along the second direction; so that the first sliding member and the second sliding member synchronously compress or release the two ends of the second elastic member; the first direction and the second direction are opposite.

19. The rotating mechanism according to claim 18, characterized in that: The first sliding member includes a first slider, a first concave cam, and a second concave cam, wherein the first concave cam and the second concave cam are both fixedly connected to one surface of the first slider, and the first slider is slidably connected to the first connecting rod and the second connecting rod; the second sliding member includes a second slider, a third concave cam, and a fourth concave cam, wherein the third concave cam and the fourth concave cam are both fixedly connected to one surface of the second slider, and the second slider is slidably connected to the first connecting rod and the second connecting rod; The first synchronizer further includes a fifth concave cam and a sixth concave cam; The fifth concave cam is fixedly connected to the end of the first gear, and the sixth concave cam is fixedly connected to the end of the second gear; the second synchronizer also includes a seventh concave cam and an eighth concave cam; the seventh concave cam is fixedly connected to the end of the third gear, and the eighth concave cam is fixedly connected to the end of the fourth gear; The fifth concave cam engages with the first concave cam, the sixth concave cam engages with the third concave cam; the seventh concave cam engages with the second concave cam, and the eighth concave cam engages with the fourth concave cam.

20. The rotating mechanism according to any one of claims 1 to 5, characterized in that: The swing assembly further includes a first main swing arm and a second main swing arm; the first main swing arm includes a first swing body and a first rotating body that are fixedly connected; the first swing body is fixedly connected to the first swing plate, and the first rotating body is slidably and rotationally connected to the bearing base; The second main swing arm includes a second swinging body and a second rotating body that are fixedly connected; the second swinging body is fixedly connected to the second swinging plate, and the second rotating body is slidably and rotationally connected to the bearing base.

21. The rotating mechanism according to any one of claims 1 to 5, characterized in that: The first swing plate is further provided with a first receiving groove; the second swing plate is further provided with a second receiving groove; the first receiving groove and the second receiving groove correspond to and are connected to each other, the first receiving groove and the second receiving groove form a receiving chamber, and the supporting base is located in the receiving chamber.

22. The rotating mechanism according to claim 21, characterized in that: The first swing plate has a first upper surface, and the second swing plate has a second upper surface; the first guide groove is recessed in the first upper surface and the groove wall of the first receiving groove; the second guide groove is recessed in the second upper surface and the groove wall of the second receiving groove.

23. 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 22, 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.

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