Rotary mechanism and foldable electronic device

Abstract

A rotary mechanism (10) and a foldable electronic device (1), which are used for solving the problem of poor reliability of a flexible display (30). The rotary mechanism (10) comprises a main shaft (100) and two rotary shaft assemblies. A first rotary shaft assembly (200) comprises a first rotary member (220), a first connecting rod (230), and a first fixing frame (250). A first end (220a) of the first rotary member (220) is rotatably connected to the main shaft (100), and a second end (220b) of the first rotary member (220) is slidably connected to the first fixing frame (250) along a first sliding direction (F1). A first end (230a) of the first connecting rod (230) is rotatably connected to the first rotary member (220), and a second end (230b) of the first connecting rod (230) is rotatably connected to the first fixing frame (250). An axis of rotation of the first connecting rod (230) relative to the first rotary member (220) is a first axis (L1), and an axis of rotation of the first connecting rod (230) relative to the first fixing frame (250) is a second axis (L2). Both the first axis (L1) and the second axis (L2) intersect the first sliding direction (F1). When the foldable electronic device (1) is impacted or dropped, the rotary shaft assemblies are prevented from rotating relative to the main shaft (100), thereby avoiding compression of the flexible display (30) by an accommodating space (P) defined by the rotary shaft assemblies and the main shaft (100).

Description

Rotating mechanism and folding electronic device

[0001] This application claims priority to Chinese Patent Application No. 202411227225.0, filed with the State Intellectual Property Office of China on August 30, 2024, entitled "Rotation Mechanism and Folding Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of foldable electronic products technology, and more particularly to a rotating mechanism and a foldable electronic device. Background Technology

[0003] With the continuous development of display technology, foldable display terminals are gradually becoming a development trend for future mobile electronic products. When unfolded, foldable electronic devices can achieve a larger display area, enhancing the viewing experience. When folded, they can achieve a smaller size, making them easy for users to carry.

[0004] The foldable electronic device includes at least a flexible screen and a housing. The housing includes two structural components for supporting the flexible screen and a rotating mechanism. The two structural components are connected to both sides of the rotating mechanism. In actual use, the rotating mechanism drives the two structural components to rotate, causing the foldable electronic device to fold or unfold. In traditional inward-folding electronic devices, when the electronic device is folded, the flexible screen folds inside the housing. The bent portion of the flexible screen is easily damaged by excessive pressure from the housing, resulting in poor reliability of the flexible screen. Summary of the Invention

[0005] This application provides a rotating mechanism and a folding electronic device to improve the poor reliability of flexible screens.

[0006] To achieve the above objectives, the embodiments of this application provide the following solutions:

[0007] On one hand, a rotating mechanism is provided, comprising: a main shaft, a first rotating shaft assembly, and a second rotating shaft assembly. The main shaft extends along a first direction. The first rotating shaft assembly includes a first rotating member, a first connecting rod, and a first fixed frame. A first end of the first rotating member is rotatably connected to the main shaft, and a second end of the first rotating member is slidably connected to the first fixed frame along a first sliding direction. A first end of the first connecting rod is rotatably connected to the first rotating member, and a second end of the first connecting rod is rotatably connected to the first fixed frame. The rotation axis of the first connecting rod relative to the first rotating member is a first axis, and the rotation axis of the first connecting rod relative to the first fixed frame is a second axis. Both the first axis and the second axis intersect the first sliding direction. The second rotating shaft assembly includes a second rotating member, a second connecting rod, and a second fixed frame. The first end of the second rotating member is rotatably connected to the main shaft, and the second end of the second rotating member is slidably connected to the second fixed frame along a second sliding direction. The first end of the second connecting rod is rotatably connected to the second rotating member, and the second end of the second connecting rod is rotatably connected to the second fixed frame. The rotation axis of the second connecting rod and the second rotating member is a third axis, and the rotation axis of the second connecting rod and the second fixed frame is a fourth axis. Both the third and fourth axes intersect the second sliding direction; both the first and second axes intersect the first direction. The third and fourth axes also intersect the first direction.

[0008] When the rotating mechanism is in the unfolded state, the second end of the first rotating member, the first end of the first rotating member, the first end of the second rotating member, and the second end of the second rotating member are arranged sequentially along the second direction. The first rotating shaft assembly, the main shaft, and the second rotating shaft assembly together form a support plane. The first sliding direction and the second sliding direction both intersect the support plane, and the second direction is perpendicular to the first direction. When the rotating mechanism is in the folded state, the first rotating shaft assembly, the main shaft, and the second rotating shaft assembly together form an accommodating space.

[0009] By setting the first link, a strong constraint is formed between the first rotating component and the first fixed frame, which helps to prevent the first rotating component from rotating relative to the first fixed frame. Similarly, by setting the second link, a strong constraint is formed between the second rotating component and the second fixed frame, which helps to prevent the second rotating component from rotating relative to the second fixed frame. In summary, by setting the first and second links, when the foldable electronic device is impacted or dropped, it helps to prevent the first or second pivot assembly from rotating relative to the main shaft, and prevents the containment space enclosed by the first and second pivot assemblies and the main shaft from compressing the flexible screen, thus improving the reliability of the flexible screen.

[0010] In some embodiments, when the rotating mechanism is in the deployed state, there is a first angle between the orthographic projection of the first axis onto the first reference plane and the orthographic projection of the second axis onto the first reference plane, and the angle between the first sliding direction and the direction perpendicular to the support plane is equal to the first angle. When the rotating mechanism is in the deployed state, there is a second angle between the orthographic projections of the third axis and the fourth axis onto the first reference plane, and the angle between the second sliding direction and the direction perpendicular to the support plane is equal to the second angle, and the first reference plane is perpendicular to the first direction.

[0011] With the above configuration, during the transition between the unfolded and folded states of the rotating mechanism, the first rotating component and the first fixed frame can be strongly constrained by the first connecting rod, and the second rotating component and the second fixed frame can be strongly constrained by the second connecting rod.

[0012] In some embodiments, when the rotating mechanism is in a folded state, the angle between the first sliding direction and the second direction is equal to the first angle; the angle between the second sliding direction and the second direction is equal to the second angle. With the above configuration, both the first fixed frame and the second fixed frame can rotate 90 degrees relative to the main shaft.

[0013] In some embodiments, the first end of the first connecting rod is rotatably connected to the first rotating member via a first rotating shaft. When the rotating mechanism is in the deployed state, the extension direction of the first rotating shaft is parallel to the support plane. The first end of the second connecting rod is rotatably connected to the second rotating member via a second rotating shaft. When the rotating mechanism is in the deployed state, the extension direction of the second rotating shaft is parallel to the support plane. This arrangement helps to reduce the dimensions of the first and second rotating shafts in the direction perpendicular to the support plane, thereby reducing the thickness of the first and second rotating shaft assemblies and avoiding them occupying a large space in the thickness direction.

[0014] In some embodiments, the extension directions of both the first and second rotating shafts are perpendicular to the first direction. With this arrangement, during the transition from an unfolded to a folded state, the rotating mechanism avoids excessively large angles of rotation between the first and second rotating members relative to the main shaft, which would result in a small accommodating space enclosed by the first rotating shaft assembly, the main shaft, and the second rotating shaft assembly, thus compressing the flexible screen within that space. Simultaneously, it also avoids excessively small angles of rotation between the first and second rotating members relative to the main shaft, which would result in larger dimensions of the first and second rotating shaft assemblies in the thickness direction.

[0015] In some embodiments, the second end of the first link is rotatably connected to the first fixed frame via a third rotating shaft. When the rotating mechanism is in the extended state, the extension direction of the third rotating shaft intersects the support plane. The second end of the second link is rotatably connected to the second fixed frame via a fourth rotating shaft. When the rotating mechanism is in the extended state, the extension direction of the fourth rotating shaft intersects the support plane. This arrangement ensures that the orthographic projection of the third rotating shaft on the first reference plane intersects with the orthographic projection of the first rotating shaft on the first reference plane, and that the orthographic projection of the fourth rotating shaft on the first reference plane intersects with the orthographic projection of the second rotating shaft on the first reference plane.

[0016] In some embodiments, the distance between the first end of the third rotating shaft and the main shaft is less than the distance between the second end of the third rotating shaft and the main shaft. When the rotating mechanism is in the deployed state, in the direction perpendicular to the support plane, the distance between the first end of the third rotating shaft and the support plane is less than the distance between the second end of the third rotating shaft and the support plane. Similarly, the distance between the first end of the fourth rotating shaft and the main shaft is less than the distance between the second end of the fourth rotating shaft and the main shaft. When the rotating mechanism is in the deployed state, in the direction perpendicular to the support plane, the distance between the first end of the fourth rotating shaft and the support plane is less than the distance between the second end of the fourth rotating shaft and the support plane. Through the above configuration, a first angle can be formed between the orthographic projections of the first axis and the second axis on the first reference plane, and a second angle can be formed between the orthographic projections of the second axis and the fourth axis on the first reference plane.

[0017] In some embodiments, the first end of the first connecting rod is rotatably connected to the first rotating member via a first rotating shaft, and the distance between the first end of the first rotating shaft and the main shaft is less than the distance between the second end of the first rotating shaft and the main shaft; the first end of the second connecting rod is rotatably connected to the second rotating member via a second rotating shaft, and the distance between the first end of the second rotating shaft and the main shaft is less than the distance between the second end of the second rotating shaft and the main shaft; when the rotating mechanism is in the unfolded state, the distance between the second end of the first rotating shaft and the supporting plane is less than the distance between the second end of the third rotating shaft and the supporting plane, and the distance between the second end of the second rotating shaft and the supporting plane is less than the distance between the second end of the fourth rotating shaft and the supporting plane. In the third direction, the distance between the orthographic projection of the second end of the first rotating shaft on the first reference plane and the distance between the orthographic projection of the second end of the third rotating shaft on the first reference plane is the first spacing, and the distance between the orthographic projection of the second end of the second rotating shaft on the first reference plane and the distance between the orthographic projection of the second end of the fourth rotating shaft on the first reference plane is the second spacing; During the transition of the rotating mechanism from the unfolded state to the folded state, in the thickness direction of the first rotating shaft assembly, the distance between the orthographic projection of the second end of the first rotating shaft on the first reference surface and the orthographic projection of the second end of the third rotating shaft on the first reference surface is less than the first spacing; in the thickness direction of the second rotating shaft assembly, the distance between the orthographic projection of the second end of the second rotating shaft on the first reference surface and the orthographic projection of the second end of the fourth rotating shaft on the first reference surface is less than the second spacing. When the rotating mechanism is in the folded state, in the second direction, the distance between the orthographic projection of the second end of the first rotating shaft on the first reference surface and the orthographic projection of the second end of the third rotating shaft on the first reference surface is the third spacing, and the distance between the orthographic projection of the second end of the second rotating shaft on the first reference surface and the orthographic projection of the second end of the fourth rotating shaft on the first reference surface is the fourth spacing. The third spacing is less than the first spacing, and the fourth spacing is less than the second spacing. Wherein, the first reference surface is perpendicular to the first direction, and the third direction is perpendicular to the first and second directions.

[0018] With the above settings, the space occupied by the first hinge assembly in the thickness direction is reduced, and the space occupied by the second hinge assembly in the thickness direction is reduced, which is conducive to realizing the thinness and lightness of foldable electronic devices.

[0019] In some embodiments, the extension directions of both the third and fourth rotating shafts are perpendicular to the first direction. With this configuration, during the transition from an unfolded to a folded state, the rotating mechanism avoids excessively large angles of rotation between the first and second rotating members relative to the main shaft, which would result in a small accommodating space enclosed by the first rotating shaft assembly, the main shaft, and the second rotating shaft assembly, thus compressing the flexible screen within that space. Simultaneously, it also avoids excessively small angles of rotation between the first and second rotating members relative to the main shaft, which would result in larger dimensions of the first and second rotating shaft assemblies in the thickness direction.

[0020] In some embodiments, the first end of the first connecting rod includes a first through hole, and the first rotating shaft is clearance-fitted with the first through hole. The distance between the first end of the first through hole and the main shaft is less than the distance between the second end of the first through hole and the main shaft, and the size of the first end of the first through hole is less than the size of the second end of the first through hole. Similarly, the second end of the second connecting rod includes a second through hole, and the second rotating shaft is clearance-fitted with the second through hole. The distance between the first end of the second through hole and the main shaft is less than the distance between the second end of the second through hole and the main shaft, and the size of the first end of the second through hole is less than the size of the second end of the second through hole. This configuration helps to avoid interference between the relative movements of the first rotating shaft and the first end of the first connecting rod, and also helps to avoid interference between the relative movements of the second rotating shaft and the first end of the second connecting rod.

[0021] In some embodiments, the first through hole includes a first hole wall and a second hole wall. In a first direction, the distance between the first hole wall and the second rotating shaft is greater than the distance between the second hole wall and the second rotating shaft. When the rotating mechanism is in the unfolded state, the direction from the second hole wall to the first hole wall is inclined towards the support plane. During the transition of the rotating mechanism from the unfolded state to the folded state, the first rotating shaft moves relative to the first through hole along the direction from the first hole wall to the second hole wall. The second through hole includes a third hole wall and a fourth hole wall. In a first direction, the distance between the third hole wall and the fourth rotating shaft is greater than the distance between the fourth hole wall and the fourth rotating shaft. When the rotating mechanism is in the unfolded state, the direction from the fourth hole wall to the third hole wall is inclined towards the support plane. During the transition of the rotating mechanism from the unfolded state to the folded state, the second rotating shaft moves relative to the second through hole along the direction from the third hole wall to the fourth hole wall. With the above arrangement, the first end of the first connecting rod can move relative to the first rotating shaft, and the first end of the second connecting rod can move relative to the second rotating shaft.

[0022] In some embodiments, the third and fourth ends of the first rotating member are arranged along a first direction. The orthographic projections of the third end of the first rotating member, the first end of the first connecting rod, and the second end of the first connecting rod onto the second reference plane are arranged sequentially along the first direction. The fourth end of the first rotating member is rotatably connected to the first end of the first connecting rod. The third end of the second rotating member and the fourth end of the second rotating member are arranged along the first direction. The orthographic projections of the third end of the second rotating member, the first end of the second connecting rod, and the second end of the second connecting rod onto the second reference plane are arranged sequentially along the first direction. The fourth end of the second rotating member is rotatably connected to the first end of the second connecting rod. The second reference plane is parallel to the support plane. This arrangement improves the assembly compactness between the first rotating member and the first connecting rod, and between the second rotating member and the second connecting rod.

[0023] In some embodiments, the second end of the first rotating member, the first end of the first connecting rod, and the orthographic projection of the second end of the first connecting rod onto the second reference plane are arranged sequentially along the first direction; the second end of the second rotating member, the first end of the second connecting rod, and the second end of the second connecting rod onto the second reference plane are also arranged sequentially along the first direction; the second reference plane is parallel to the support plane. This arrangement facilitates the reduction in thickness and weight of the first and second rotating shaft assemblies.

[0024] In some embodiments, the second end of the first rotating member and the first fixed frame are slidably connected via a first slider and a first sliding groove. The second end of the first rotating member includes the first slider, and the first fixed frame includes the first sliding groove, the extension direction of which is parallel to the first sliding direction. The second end of the second rotating member and the second fixed frame are slidably connected via a second slider and a second sliding groove. The second end of the second rotating member includes the second slider, and the second fixed frame includes the second sliding groove, the extension direction of which is parallel to the second sliding direction. With the above configuration, when the rotating mechanism switches between a flattened state and a folded state, the first fixed frame can slide relative to the first rotating member along the first sliding direction, and the second fixed frame can slide relative to the second rotating member along the second sliding direction.

[0025] In some embodiments, when the rotating mechanism is in the deployed state, in the second direction, the distance between the first end of the first slide groove and the main shaft is less than the distance between the second end of the first slide groove and the main shaft; and in the direction perpendicular to the support plane, the distance between the first end of the first slide groove and the support plane is greater than the distance between the second end of the first slide groove and the support plane. When the rotating mechanism is in the deployed state, in the second direction, the distance between the first end of the second slide groove and the main shaft is less than the distance between the second end of the second slide groove and the main shaft; and in the direction perpendicular to the support plane, the distance between the first end of the second slide groove and the support plane is greater than the distance between the second end of the first slide groove and the support plane. Through these arrangements, a first angle can be formed between the extension direction of the first slide groove and the direction perpendicular to the support plane, and a second angle can be formed between the extension direction of the second slide groove and the direction perpendicular to the support plane.

[0026] In some embodiments, during the transition of the rotating mechanism from an unfolded state to a folded state, the first slider moves relative to the first slide groove in a direction from the second end of the first slide groove to the first end of the first slide groove, and the second slider moves relative to the second slide groove in a direction from the second end of the second slide groove to the first end of the second slide groove. During the transition of the rotating mechanism from a folded state to an unfolded state, the first slider moves relative to the first slide groove in a direction from the first end of the first slide groove to the second end of the first slide groove, and the second slider moves relative to the second slide groove in a direction from the first end of the second slide groove to the second end of the second slide groove. This arrangement achieves relative sliding between the first rotating member and the first fixed frame, and relative sliding between the second rotating member and the second fixed frame.

[0027] In some embodiments, the first rotating member and the main shaft are rotatably connected via a first arc-shaped slider and a first arc-shaped groove, wherein the first rotating member includes the first arc-shaped slider and the main shaft includes the first arc-shaped groove; or, the first rotating member includes the first arc-shaped groove and the main shaft includes the first arc-shaped slider; the second rotating member and the main shaft are rotatably connected via a second arc-shaped slider and a second arc-shaped groove, wherein the second rotating member includes the second arc-shaped slider and the main shaft includes the second arc-shaped groove; or, the second rotating member includes the second arc-shaped groove and the main shaft includes the second arc-shaped slider. With the above configuration, the rotation axis of the first rotating member relative to the main shaft and the rotation axis of the second rotating member relative to the main shaft are both parallel to the first direction and do not coincide.

[0028] In some embodiments, the first rotating shaft assembly further includes a first support plate, which is slidably connected to the first rotating member and rotatably connected to the first fixed frame. The second rotating shaft assembly further includes a second support plate, which is slidably connected to the second rotating member and rotatably connected to the second fixed frame. When the rotating mechanism is in the unfolded state, the first rotating shaft assembly, the main shaft, and the second rotating shaft assembly together form a support plane, including: the first support plate, the first fixed frame, the main shaft, the second support plate, and the second fixed frame together forming a support plane. When the rotating mechanism is in the folded state, the minimum distance between the support surfaces of the first and second support plates along the second direction is greater than or equal to the distance between the support surfaces of the first and second fixed frames along the second direction. With the above configuration, when the rotating mechanism is in the unfolded state, it is beneficial to improve the support effect of the first and second rotating shaft assemblies on the flexible screen. When the rotating mechanism is in the folded state, it is beneficial to increase the accommodating space for the flexible screen.

[0029] In some embodiments, when the rotating mechanism is in a folded state, the distance between the support surfaces of the first support plate and the second support plate gradually increases in the direction close to the main shaft. This arrangement avoids excessive pressure on the flexible screen, thereby reducing the stress on the flexible screen and improving its reliability.

[0030] In some embodiments, when the rotating mechanism is in the deployed state, the first support plate is located on the side of the first connecting rod closest to the support plane, and the second support plate is located on the side of the second connecting rod closest to the support plane. This arrangement facilitates the reduction in the thickness and weight of the first and second rotating shaft assemblies.

[0031] In some embodiments, a first support plate and a first rotating member are slidably connected by a first pin and a first guide hole, the extension direction of the first pin being parallel to a first direction; wherein the first rotating member includes the first pin and the first support plate includes the first guide hole; or, the first support plate includes the first pin and the first rotating member includes the first guide hole; a second support plate and a second rotating member are slidably connected by a second pin and a second guide hole, the extension direction of the second pin being parallel to the first direction; wherein the second rotating member includes the second pin and the second support plate includes the second guide hole; or, the second support plate includes the second pin and the second rotating member includes the second guide hole. With the above configuration, when the first pin moves along the extension direction of the first guide hole, the first support plate and the first rotating member slide relative to each other; when the second pin moves along the extension direction of the second guide hole, the second support plate and the second rotating member slide relative to each other.

[0032] In some embodiments, the distance between the first end of the first guide hole and the main shaft is less than the distance between the second end of the first guide hole and the main shaft, and the distance between the first end of the first guide hole and the support surface of the first support plate is greater than the distance between the second end of the first guide hole and the support surface of the first support plate; the distance between the first end of the second guide hole and the main shaft is less than the distance between the second end of the second guide hole and the main shaft, and the distance between the first end of the second guide hole and the support surface of the second support plate is greater than the distance between the second end of the second guide hole and the support surface of the second support plate. With the above arrangement, it is advantageous that when the rotating mechanism is in a folded state, the distance between the support surfaces of the first and second support plates along the second direction gradually increases towards the main shaft, so that the first rotating shaft assembly, the main shaft, and the second rotating shaft assembly together enclose a teardrop-shaped or approximately teardrop-shaped receiving space.

[0033] In some embodiments, during the transition of the rotating mechanism from an unfolded state to a folded state, the first pin moves relative to the first guide hole in a direction from the second end of the first guide hole to the first end of the first guide hole, and the second pin moves relative to the second guide hole in a direction from the second end of the second guide hole to the first end of the second guide hole. During the transition of the rotating mechanism from a folded state to an unfolded state, the first pin moves relative to the first guide hole in a direction from the first end of the first guide hole to the second end of the first guide hole, and the second pin moves relative to the second guide hole in a direction from the first end of the second guide hole to the second end of the second guide hole. This arrangement allows the first support plate and the first rotating member to slide relative to each other, and the second support plate and the second rotating member to slide relative to each other.

[0034] In some embodiments, the first support plate and the first fixed frame are rotatably connected by a third arc-shaped slider and a third arc-shaped groove; wherein the first support plate includes a third arc-shaped slider and the first fixed frame includes a third arc-shaped groove; or, the first fixed frame includes a third arc-shaped slider and the first support plate includes a third arc-shaped groove. The second support plate and the second fixed frame are rotatably connected by a fourth arc-shaped slider and a fourth arc-shaped groove; wherein the second support plate includes a fourth arc-shaped slider and the second fixed frame includes a fourth arc-shaped groove; or, the second fixed frame includes a fourth arc-shaped slider and the second support plate includes a fourth arc-shaped groove. Through the above configuration, the first support plate and the first fixed frame can be rotatably connected via a virtual axis connection, and the second support plate and the second fixed frame can be rotatably connected via a virtual axis connection.

[0035] In some embodiments, the first rotating shaft assembly further includes a first swing arm, the first end of which is rotatably connected to the main shaft, the rotation axis of the first swing arm relative to the main shaft being parallel to a first direction, and the second end of which is slidably connected to a first fixed frame, the sliding direction of the first swing arm relative to the first fixed frame intersecting the extension direction of the first fixed frame, and also intersecting the first sliding direction; the second rotating shaft assembly further includes a second swing arm, the first end of which is rotatably connected to the main shaft, the rotation axis of the second swing arm relative to the main shaft being parallel to the first direction, and the second end of which is slidably connected to a second fixed frame, the sliding direction of the second swing arm relative to the second fixed frame intersecting the extension direction of the second fixed frame, and also intersecting the second sliding direction. This configuration facilitates adjustment of the length between the first and second fixed frames, ensuring that the length of the flexible screen remains unchanged during the transition from an unfolded state to a folded state, and mitigating the squeezing or stretching effect of the rotating mechanism on the flexible screen.

[0036] On the other hand, a foldable electronic device is provided, comprising: a flexible screen, a first structural member, a second structural member, and a rotating mechanism as described in the above embodiments. The first and second structural members are connected to both sides of the rotating mechanism, and the flexible screen is located on the same side of the first and second structural members and connected to them. When the foldable electronic device is in an unfolded state, the supporting plane of the rotating mechanism supports the flexible screen. When the foldable electronic device is in a folded state, the first rotating shaft assembly, the main shaft, and the second rotating shaft assembly of the rotating mechanism together constitute a receiving space, and a portion of the flexible screen is located within the receiving space.

[0037] In some embodiments, the first end of the first link is rotatably connected to the first rotating member via a first rotating shaft, and the first end of the second link is rotatably connected to the second rotating member via a second rotating shaft; when the foldable electronic device is in a folded state, the extension direction of the first rotating shaft is parallel to the support surface of the first structural member, and the extension direction of the second rotating shaft is parallel to the support surface of the second structural member.

[0038] In some embodiments, the distance between the first end of the first rotating shaft and the main shaft is less than the distance between the second end of the first rotating shaft and the main shaft, and the distance between the first end of the second rotating shaft and the main shaft is less than the distance between the second end of the second rotating shaft and the main shaft; the second end of the first connecting rod is rotatably connected to the first fixed frame via a third rotating shaft, and the distance between the first end of the third rotating shaft and the main shaft is less than the distance between the second end of the third rotating shaft and the main shaft; the second end of the second connecting rod is rotatably connected to the second fixed frame via a fourth rotating shaft, and the distance between the first end of the fourth rotating shaft and the main shaft is less than the distance between the second end of the fourth rotating shaft and the main shaft.

[0039] When the foldable electronic device is in the unfolded state, there is a first distance between the second end of the first rotating shaft and the plane containing the supporting surface of the first structural member. This first distance is less than the distance between the second end of the third rotating shaft and the plane containing the supporting surface of the first structural member. There is a second distance between the second end of the second rotating shaft and the plane containing the supporting surface of the second structural member. This second distance is less than the distance between the second end of the fourth rotating shaft and the plane containing the supporting surface of the second structural member. During the transition from the unfolded state to the folded state, the second end of the first rotating shaft moves relative to the first fixed frame along a first sliding direction, and the second end of the second rotating shaft moves relative to the second fixed frame along a second sliding direction. When the foldable electronic device is in the folded state, the distance between the second end of the first rotating shaft and the plane containing the supporting surface of the first structural member is greater than the first distance, and the distance between the second end of the second rotating shaft and the plane containing the supporting surface of the second structural member is greater than the second distance.

[0040] In some embodiments, when the foldable electronic device is in a folded state, the distance between the second end of the first rotating shaft and the plane containing the support surface of the first structural member is less than or equal to the distance between the second end of the third rotating shaft and the plane containing the support surface of the second structural member; the distance between the second end of the second rotating shaft and the plane containing the support surface of the first structural member is less than or equal to the distance between the second end of the fourth rotating shaft and the plane containing the support surface of the second structural member.

[0041] In some embodiments, when the foldable electronic device is in the unfolded state, there is a third distance between the first end of the first rotating shaft and the plane containing the support surface of the first structural member, which is smaller than the distance between the first end of the third rotating shaft and the plane containing the support surface of the first structural member; there is a fourth distance between the first end of the second rotating shaft and the plane containing the support surface of the second structural member, which is smaller than the distance between the first end of the fourth rotating shaft and the plane containing the support surface of the second structural member; during the transition of the foldable electronic device from the unfolded state to the folded state, the first end of the first rotating shaft moves relative to the first fixed frame along a first sliding direction, and the first end of the second rotating shaft moves relative to the second fixed frame along a second sliding direction; when the foldable electronic device is in the folded state, along the second direction, the distance between the first end of the first rotating shaft and the plane containing the support surface of the first structural member is greater than the third distance, and the distance between the first end of the second rotating shaft and the plane containing the support surface of the second structural member is greater than the fourth distance.

[0042] In some embodiments, when the foldable electronic device is in a folded state, the distance between the first end of the first pivot and the plane containing the support surface of the first structural member is greater than the distance between the first end of the third pivot and the plane containing the support surface of the first structural member; and the distance between the first end of the second pivot and the plane containing the support surface of the second structural member is greater than the distance between the first end of the fourth pivot and the plane containing the support surface of the second structural member.

[0043] The folding electronic device provided in the embodiments of this application includes the rotation mechanism as described above, and therefore has all the above-described beneficial effects, which will not be repeated here. Attached Figure Description

[0044] Figure 1 is a structural diagram of a foldable electronic device in an unfolded state according to an embodiment of this application;

[0045] Figure 2 is a structural diagram of a foldable electronic device in a folded state according to an embodiment of this application;

[0046] Figure 3 is a structural diagram of a foldable electronic device provided in an embodiment of this application;

[0047] Figure 4 is a partial enlarged view of point M when the rotating mechanism in Figure 3 is in the deployed state;

[0048] Figure 5 is a partial enlarged view of point M when the rotating mechanism in Figure 3 is in the folded state;

[0049] Figure 6 is an exploded view of the partial structure at point M when the rotating mechanism in Figure 3 is in the deployed state;

[0050] Figure 7 is an exploded view of the overall structure at point M when the rotating mechanism in Figure 3 is in the deployed state.

[0051] Figure 8 is an exploded view of the assembly structure of the main shaft, the first rotating component, and the second rotating component of a rotating mechanism provided in an embodiment of this application;

[0052] Figure 9 is an exploded view of the main shaft of a rotating mechanism provided in an embodiment of this application;

[0053] Figure 10 is a cross-sectional view along section line AA when the rotating mechanism in Figure 5 is in the unfolded state.

[0054] Figure 11 is a cross-sectional view along section line AA when the rotating mechanism in Figure 5 is in the folded state.

[0055] Figure 12 is an assembly structure diagram of the first fixed frame and other components, and the second fixed frame and other components of a rotating mechanism provided in an embodiment of this application;

[0056] Figure 13 is an assembly structure diagram of a first rotating component and a first connecting rod, a second rotating component and a second connecting rod of a rotating mechanism provided in an embodiment of this application;

[0057] Figure 14 is an assembly structure diagram of a first fixed frame and a first connecting rod, a second fixed frame and a second connecting rod of a rotating mechanism provided in an embodiment of this application;

[0058] Figure 15 is a structural diagram of the first and second fixed frames of a rotating mechanism provided in an embodiment of this application;

[0059] Figure 16A is a structural diagram of the first and second links of a rotating mechanism provided in an embodiment of this application, in the unfolded state.

[0060] Figure 16B is a structural diagram of the first and second links of a rotating mechanism provided in an embodiment of this application, in a folded state.

[0061] Figure 17A is an assembly structure diagram of the first link and the second link of a rotating mechanism provided in an embodiment of this application, along with other parts;

[0062] Figure 17B is a subjective view of the first and second links of a rotating mechanism provided in an embodiment of this application;

[0063] Figure 18 is a cross-sectional view along section line BB when the rotating mechanism in Figure 5 is in the unfolded state.

[0064] Figure 19 is a cross-sectional view along section line BB when the rotating mechanism in Figure 5 is in the folded state.

[0065] Figure 20 is a cross-sectional view along the CC section line when the rotating mechanism in Figure 5 is in the unfolded state.

[0066] Figure 21 is a cross-sectional view along the CC section line when the rotating mechanism in Figure 5 is in the folded state.

[0067] Figure 22A is a diagram showing the relative positional relationship of the rotating shaft of a rotating mechanism in the unfolded state on the first reference plane.

[0068] Figure 22B is a diagram showing the relative positional relationship of the rotating shaft of a rotating mechanism in a folded state on the first reference plane.

[0069] Figure 23A is a cross-sectional view of the rotating mechanism in Figure 18 along the R1-R1 section line;

[0070] Figure 23B is a cross-sectional view of the rotating mechanism in Figure 18 along the R2-R2 section line;

[0071] Figure 24A is a cross-sectional view of the rotating mechanism in Figure 19 along the T1-T1 section line;

[0072] Figure 24B is a cross-sectional view of the rotating mechanism in Figure 19 along the T2-T2 section line;

[0073] Figure 25A is a cross-sectional view of the rotating mechanism in Figure 18 along the R3-R3 section line;

[0074] Figure 25B is a cross-sectional view of the rotating mechanism in Figure 18 along the R4-R4 section line;

[0075] Figure 26A is a cross-sectional view of the rotating mechanism in Figure 19 along the T3-T3 section line;

[0076] Figure 26B is a cross-sectional view of the rotating mechanism in Figure 19 along the T4-T4 section line;

[0077] Figure 27 is a front view of a first support plate and a second support plate provided in an embodiment of this application;

[0078] Figure 28 is a structural diagram of a first support plate and a second support plate provided in an embodiment of this application;

[0079] Figure 29 is a cross-sectional view along the DD section line when the rotating mechanism in Figure 5 is in the unfolded state.

[0080] Figure 30 is a cross-sectional view along the DD section line when the rotating mechanism in Figure 5 is in the folded state.

[0081] Figure 31 is a structural diagram of a first swing arm and a second swing arm provided in an embodiment of this application;

[0082] Figure 32 is a cross-sectional view along the EE section line when the rotating mechanism in Figure 5 is in the deployed state.

[0083] Figure 33 is a cross-sectional view along the EE section line when the rotating mechanism in Figure 5 is in the folded state.

[0084] Figure 34 is a structural diagram of a main external shaft provided in an embodiment of this application. Detailed Implementation

[0085] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0086] In the following description, the terms "first," "second," etc., are used for ease of description only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0087] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0088] In the embodiments of this application, the directional indications used to explain the structure and movement of different components, such as up, down, left, right, front, and back, are relative. These indications are appropriate when the components are in the positions shown in the figures. However, if the description of the component positions changes, these directional indications will also change accordingly.

[0089] This application provides a foldable electronic device. The foldable electronic device can be a mobile phone, tablet computer, television, smart wearable products (e.g., smartwatch, smart bracelet), or other terminal products.

[0090] To facilitate understanding of the foldable electronic device 1 provided in the embodiments of this application, a foldable electronic device 1 is described below with reference to Figures 1 and 2:

[0091] The foldable electronic device 1 includes a flexible screen 30. The flexible screen 30 can be an active matrix organic light emitting diode (AMOLED) display.

[0092] As a self-emissive display, AMOLED displays do not require a backlight module (BLM). Therefore, when the substrate of an AMOLED display is made of a flexible resin material, such as polyethylene terephthalate (PET), the AMOLED display can be bent.

[0093] Furthermore, as shown in Figures 1 and 2, the foldable electronic device 1 also includes a rotating mechanism 10 for supporting the flexible screen 30, a first structural member 21, and a second structural member 22. The rotating mechanism 10 is connected between the first structural member 21 and the second structural member 22. The first structural member 21 and the second structural member 22 support the flexible screen 30, ensuring that the flexible screen 30 remains as flat as possible during use and protecting the non-display surface of the flexible screen 30. The first structural member 21 and the second structural member 22 can rotate relative to the rotating mechanism 10, respectively. This application embodiment only briefly illustrates part of the structure of the first structural member 21 and the second structural member 22, and the accompanying drawings are also simplified. This application embodiment does not strictly limit the specific structure of the first structural member 21 and the second structural member 22.

[0094] The first structural member 21 and the second structural member 22 may each include a mid-frame structure and other components for mounting and securing the foldable electronic device 1. Examples include a camera, earphones, a handset, buttons, and a battery. This embodiment does not limit the other electronic components mounted on the first structural member 21 and the second structural member 22. The first structural member 21 and the second structural member 22 may also each include a decorative cover plate for protecting the components inside the mid-frame structure and for presenting part of the appearance of the foldable electronic device 1.

[0095] For example, a portion of the flexible screen 30 can be fixed to the first structural member 21 via the adhesive layer 40, and a portion can be fixed to the second structural member 22 via the adhesive layer 40. Furthermore, a portion of the flexible screen 30 can also be fixed to the rotating mechanism 10. The adhesive layer 40 can be a thin film layer formed after applying adhesive. This application embodiment does not limit the specific form of the adhesive layer 40; for example, the adhesive layer 40 can be an intermittent thin film layer, or it can be a continuous thin film layer.

[0096] Figure 3 is a structural diagram of a foldable electronic device provided in an embodiment of this application, and Figure 4 is a partial enlarged view of point M when the rotating mechanism in Figure 3 is in the unfolded state. Referring to Figures 3 and 4, the rotating mechanism 10 includes a main shaft 100, a first rotating shaft assembly 200, and a second rotating shaft assembly 300.

[0097] For ease of explanation, the length extension direction of the main shaft 100 is defined as the first direction X, and the arrangement direction of the first rotating shaft assembly 200 and the second rotating shaft assembly 300 when the foldable electronic device 1 is in the unfolded state is defined as the second direction Y. The second direction Y is perpendicular to the first direction X, and the third direction Z is perpendicular to the plane containing the first direction X and the second direction Y.

[0098] For example, the first rotating shaft assembly 200 is rotatably connected to the main shaft 100, and the first rotating shaft assembly 200 is also connected to the first structural member 21; the second rotating shaft assembly 300 is rotatably connected to the main shaft 100, and the second rotating shaft assembly 300 is also connected to the second structural member 22. The rotation axis of the first rotating shaft assembly 200 relative to the main shaft 100, and the rotation axis of the second rotating shaft assembly 300 relative to the main shaft 100 are both parallel to the first direction X.

[0099] With the above configuration, the first structural component 21 can drive the first rotating shaft assembly 200 to rotate relative to the main shaft 100, and the second structural component 22 can drive the second rotating shaft assembly 300 to rotate relative to the main shaft 100, so as to realize the folding or unfolding of the foldable electronic device.

[0100] Referring to Figure 1, when the folding electronic device 1 is in the unfolded state, the included angle between the first structural member 21 and the second structural member 22 can be approximately 180° (understandably, a slight deviation in the included angle between the first structural member 21 and the second structural member 22 is also allowed, for example, the included angle can be 165°, 177° or 185°). At this time, the rotating mechanism 10 is also in the unfolded state.

[0101] When the rotating mechanism 10 is in the unfolded state, the first rotating shaft assembly 200 and the second rotating shaft assembly 300 are arranged along the second direction Y. The first rotating shaft assembly 200, the main shaft 100, and the second rotating shaft assembly 300 together constitute the support plane S. The support plane S can be used to support the flexible screen 30, improving the flatness of the flexible screen 30 in the unfolded state. For example, the support plane S can be perpendicular to the third direction Z.

[0102] Here, "support plane S" can be understood as a plane or an approximate plane. The plane can be a surface parallel to the first direction X and the second direction Y. The approximate plane can be a slightly undulating surface, and the acceptable deviation range of the approximate plane can be, for example, a deviation within 5%.

[0103] In some embodiments, the flexible screen 30 can be fixed to the first rotating shaft assembly 200 and the second rotating shaft assembly 300 by adhesive layers. The thickness of the adhesive layer can be adjusted to adjust the support effect of the rotating mechanism 10 on the flexible screen 30, thereby ensuring that the flexible screen 30 is in the unfolded state. In this case, "together forming the support plane S" can also be understood as adjusting the thickness of the adhesive layers between the flexible screen 30 and the first rotating shaft assembly 200, and between the flexible screen 30 and the second rotating shaft assembly 300, so that the first rotating shaft assembly 200, the main shaft 100, and the second rotating shaft assembly 300 together form the support plane S, thereby ensuring that the flexible screen 30 is in the unfolded state when flattened.

[0104] As shown in Figure 2, when the foldable electronic device 1 is in the folded state, the included angle between the first structural member 21 and the second structural member 22 can be approximately 0° (it is understood that the included angle between the first structural member 21 and the second structural member 22 is also allowed to have a slight deviation, for example, the included angle can be 1°, 3° or 5°). At this time, the flexible screen 30 is in the folded state, and the first rotating shaft assembly 200 and the second rotating shaft assembly 300 are also in the folded state, that is, the rotating mechanism 10 is in the folded state.

[0105] In some embodiments, when the foldable electronic device 1 is in a folded state, the first structural member 21 and the second structural member 22 can contact each other to achieve positioning. Alternatively, the first structural member 21 and the second structural member 22 can also be close to each other with a small gap between them; this embodiment does not specifically limit this.

[0106] Figure 5 is a partial enlarged view of point M when the rotating mechanism 10 in Figure 3 is in the folded state. As shown in Figure 5, when the rotating mechanism 10 is in the folded state, the first rotating shaft assembly 200, the second rotating shaft assembly 300, and the main shaft 100 can jointly enclose a receiving space P, within which a portion of the flexible screen 30 can be located. When the foldable electronic device 1 is impacted or falls, the first rotating shaft assembly 200 or the second rotating shaft assembly 300 may oscillate relative to the main shaft 100, causing the enclosed receiving space P to decrease. This, in turn, causes the flexible screen 30 located within the receiving space P to be compressed, affecting the reliability of the flexible screen 30.

[0107] Figure 6 is a partial exploded view of the structure at point M when the rotating mechanism 10 in Figure 3 is in the unfolded state; Figure 7 is an overall exploded view of the structure at point M when the rotating mechanism 10 in Figure 3 is in the unfolded state. Referring to Figures 6 and 7, in this embodiment of the application, the first rotating shaft assembly 200 includes a first rotating member 220 and a first fixed frame 250, wherein the first end 220a of the first rotating member is rotatably connected to the main shaft 100, the second end 220b of the first rotating member is slidably connected to the first fixed frame 250, and the second end 220b of the first rotating member can slide relative to the first fixed frame 250 along the first sliding direction F1. The second rotating shaft assembly 300 includes a second rotating member 320 and a second fixed frame 350, wherein the first end 320a of the second rotating member is rotatably connected to the main shaft 100, the second end 320b of the second rotating member is slidably connected to the second fixed frame 350, and the second end 320b of the second rotating member can slide relative to the second fixed frame 350 along the second sliding direction F2.

[0108] The first fixing frame 250 can also be fixedly connected to the first structural member 21 so that the rotating mechanism 10 is fixedly connected to the first structural member 21 through the first fixing frame 250; the second fixing frame 350 can also be fixedly connected to the second structural member 22 so that the rotating mechanism 10 is fixedly connected to the second structural member 22 through the second fixing frame 350.

[0109] In some embodiments, when the rotating mechanism 10 is in the unfolded state, the second end 220b of the first rotating member, the first end 220a of the first rotating member, the first end 320a of the second rotating member, and the second end 320b of the second rotating member are arranged sequentially along the second direction Y.

[0110] Furthermore, when the rotating mechanism 10 is in the deployed state, the first sliding direction F1 can intersect the supporting plane S. For example, the angle between the first sliding direction F1 and the direction perpendicular to the supporting plane S can be acute or obtuse, or the first sliding direction F1 can be perpendicular to the direction perpendicular to the supporting plane S. The direction perpendicular to the supporting plane S can be parallel to the third direction Z. Similarly, when the rotating mechanism 10 is in the deployed state, the second sliding direction F2 can intersect the direction perpendicular to the supporting plane S. For example, the angle between the second sliding direction F2 and the direction perpendicular to the supporting plane S can be acute or obtuse, or the second sliding direction F2 can be perpendicular to the direction perpendicular to the supporting plane S.

[0111] Figure 8 is an exploded view of the assembly structure of the main shaft 100, the first rotating member 220, and the second rotating member 320 of a rotating mechanism 10 provided in an embodiment of this application; Figure 9 is an exploded view of the structure of the main shaft 100 of a rotating mechanism 10 provided in an embodiment of this application. In some embodiments, as shown in Figures 8 and 9, the first rotating member 220 and the main shaft 100 can be rotatably connected by a first arc-shaped slider 221 and a first arc-shaped slide groove 101, wherein the first rotating member 220 may include the first arc-shaped slider 221, and the main shaft 100 may include the first arc-shaped slide groove 101. The second rotating member 320 and the main shaft 100 are rotatably connected by a second arc-shaped slider 321 and a second arc-shaped slide groove 102, wherein the second rotating member 320 includes the second arc-shaped slider 321, and the main shaft 100 includes the second arc-shaped slide groove 102.

[0112] For example, the main shaft 100 may include a main inner shaft and a main outer shaft 110 stacked along a third direction Z, wherein the main inner shaft is closer to the flexible screen 30 than the main outer shaft 110. The main inner shaft may include a first shaft body 120 and a second shaft body 130 stacked along a third direction Z, and the main outer shaft 110, the first shaft body 120, and the second shaft body 130 are stacked sequentially along the third direction Z. The first shaft body 120 and the second shaft body 130 may together form a first arc-shaped groove 101 and a second arc-shaped groove 102, and the first arc-shaped groove 101 and the second arc-shaped groove 102 may be spaced apart along a second direction Y, and the central axis of the first arc-shaped groove 101 and the central axis of the second arc-shaped groove 102 are both parallel to the first direction X.

[0113] The first end 220a of the first rotating member may include a first arc-shaped slider 221, which is slidably connected to the first arc-shaped groove 101. This allows the first end 220a of the first rotating member and the main shaft 100 to be rotatably connected via a virtual axis connection, which improves the assembly compactness of the first rotating member 220 and the main shaft 100, and thus helps to reduce the size of the rotating mechanism 10. The first end 320a of the second rotating member may include a second arc-shaped slider 321, which is slidably connected to the second arc-shaped groove 102. This allows the first end 320a of the second rotating member and the main shaft 100 to be rotatably connected via a virtual axis connection, which improves the assembly compactness of the second rotating member 320 and the main shaft 100, and thus helps to reduce the size of the rotating mechanism 10.

[0114] With the above settings, the rotation axis of the first rotating member 220 relative to the main shaft 100 and the rotation axis of the second rotating member 320 relative to the main shaft 100 are both parallel to the first direction X and do not coincide.

[0115] Figure 10 is a cross-sectional view along section line AA when the rotating mechanism 10 in Figure 5 is in the unfolded state; Figure 11 is a cross-sectional view along section line AA when the rotating mechanism 10 in Figure 5 is in the folded state.

[0116] Referring to Figures 10 and 11, during the transition of the rotating mechanism 10 from a folded state to an unfolded state, the first arc-shaped slider 221 slides towards the second arc-shaped groove 102 within the first arc-shaped groove 101, gradually increasing the portion of the first arc-shaped slider 221 within the first arc-shaped groove 101. Similarly, the second arc-shaped slider 321 slides towards the first arc-shaped groove 101 within the second arc-shaped groove 102, also gradually increasing the portion of the second arc-shaped slider 321 within the second arc-shaped groove 102. This arrangement facilitates the joint support of the flexible screen 30 by the first rotating component 220, the main shaft 100, and the second rotating component 320 when the rotating mechanism 10 is in the unfolded state.

[0117] During the transition from the unfolded state to the folded state of the rotating mechanism 10, the first arc-shaped slider 221 slides away from the second arc-shaped slide groove 102 within the first arc-shaped slide groove 101, and the portion of the first arc-shaped slider 221 within the first arc-shaped slide groove 101 gradually decreases. Similarly, the second arc-shaped slider 321 slides away from the first arc-shaped slide groove 101 within the second arc-shaped slide groove 102, and the portion of the second arc-shaped slider 321 within the second arc-shaped slide groove 102 gradually decreases. This arrangement allows the first rotating member 220, the main shaft 100, and the second rotating member 320 to enclose a receiving space P when the rotating mechanism 10 is in the folded state.

[0118] In addition, in some other embodiments, the first rotating member 220 may also include a first arc-shaped slide groove 101, and the main shaft 100 may include a first arc-shaped slider 221, so that the first rotating member 220 and the main shaft 100 can be rotatably connected through the first arc-shaped slide groove 101 and the first arc-shaped slider 221; the second rotating member 320 may also include a second arc-shaped slide groove 102, and the main shaft 100 may include a second arc-shaped slider 321, so that the second rotating member 320 and the main shaft 100 can be rotatably connected through the second arc-shaped slide groove 102 and the second arc-shaped slider 321.

[0119] Of course, the first rotating member 220 and the main shaft 100 can also be rotatably connected by other connection methods, and the second rotating member 320 and the main shaft 100 can also be rotatably connected by other connection methods. This application embodiment does not limit this.

[0120] Figure 12 is an assembly structure diagram of the first fixed frame 250 and other components, and the second fixed frame 350 and other components of a rotating mechanism 10 provided in an embodiment of this application; Figure 13 is an assembly structure diagram of the first rotating component and the first connecting rod, the second rotating component and the second connecting rod of a rotating mechanism provided in an embodiment of this application; Figure 14 is an assembly structure diagram of the first fixed frame and the first connecting rod, the second fixed frame and the second connecting rod of a rotating mechanism provided in an embodiment of this application; Figure 15 is a structural diagram of the first fixed frame 250 and the second fixed frame 350 of a rotating mechanism 10 provided in an embodiment of this application.

[0121] Referring to Figures 8, 12, 14, and 15, in some embodiments, the second end 220b of the first rotating member and the first fixed frame 250 are slidably connected by a first slider 222 and a first groove 251. The second end 220b of the first rotating member includes the first slider 222, and the first fixed frame 250 includes the first groove 251, the extension direction of which is parallel to the first sliding direction F1. The second end 320b of the second rotating member and the second fixed frame 350 are slidably connected by a second slider 322 and a second groove 351. The second end 320b of the second rotating member includes the second slider 322, and the second fixed frame 350 includes the second groove 351, the extension direction of which is parallel to the second sliding direction F2.

[0122] With the above settings, when the rotating mechanism 10 is switching between a flattened state and a folded state, the first fixed frame 250 can slide relative to the first rotating member 220 along the first sliding direction F1, and the second fixed frame 350 can slide relative to the second rotating member 320 along the second sliding direction F2.

[0123] In addition, in some other embodiments, the second end 220b of the first rotating member includes a first groove 251, and the first fixing frame 250 includes a first slider 222; the second end 320b of the second rotating member includes a second groove 351, and the second fixing frame 350 includes a second slider 322.

[0124] Based on the above structure, referring to Figure 12 and in conjunction with Figures 6 and 7, the first rotating shaft assembly 200 further includes a first connecting rod 230 and a second connecting rod 330. The first connecting rod 230 connects the first rotating member 220 and the first fixed frame 250, and the second connecting rod 330 connects the second rotating member 320 and the second fixed frame 350.

[0125] In this configuration, the first end 230a of the first connecting rod is rotatably connected to the first rotating member 220, and the second end 230b of the first connecting rod is rotatably connected to the first fixed frame 250. The rotation axis of the first connecting rod 230 relative to the first rotating member 220 is the first axis L1, and the rotation axis of the first connecting rod 230 relative to the first fixed frame 250 is the second axis L2. Both the first axis L1 and the second axis L2 intersect with the first sliding direction F1, and both the first axis L1 and the second axis L2 intersect with the first direction X.

[0126] In this embodiment, since the first end 230a of the first connecting rod rotates relative to the first rotating member 220 and also slides relative to the first fixed frame 250, the position of the first axis L1 relative to the first fixed frame 250 changes during the transition of the rotating mechanism 10 from the unfolded state to the folded state. However, since the second end 230b of the first connecting rod rotates relative to the first fixed frame 250, the position of the second axis L2 relative to the first fixed frame 250 remains unchanged during the transition of the rotating mechanism 10 from the unfolded state to the folded state.

[0127] For example, the angle between the first axis L1 and the first sliding direction F1 can be acute or obtuse, or the first axis L1 and the first sliding direction F1 can be perpendicular to each other. Similarly, the angle between the second axis L2 and the first sliding direction F1 can be acute or obtuse, or the second axis L2 and the first sliding direction F1 can be perpendicular to each other.

[0128] The first end 330a of the second connecting rod is rotatably connected to the second rotating member 320, and the second end 330b of the second connecting rod is rotatably connected to the second fixed frame 350. The rotation axis of the second connecting rod 330 and the second rotating member 320 is the third axis L3, and the rotation axis of the second connecting rod 330 and the second fixed frame 350 is the fourth axis L4. Both the third axis L3 and the fourth axis L4 intersect the second sliding direction F2, and both the third axis L3 and the fourth axis L4 intersect the first direction X.

[0129] In this embodiment, since the first end 330a of the second connecting rod rotates relative to the second rotating member 320 and also slides relative to the second fixed frame 350, the position of the third axis L3 relative to the second fixed frame 350 changes during the transition of the rotating mechanism 10 from the unfolded state to the folded state. However, since the second end 330b of the second connecting rod rotates relative to the second fixed frame 350, the position of the fourth axis L4 relative to the second fixed frame 350 remains unchanged during the transition of the rotating mechanism 10 from the unfolded state to the folded state. For example, the angle between the third axis L3 and the second sliding direction F2 can be acute or obtuse, or the third axis L3 and the second sliding direction F2 can be perpendicular to each other. Similarly, the angle between the fourth axis L4 and the second sliding direction F2 can be acute or obtuse, or the fourth axis L4 and the second sliding direction F2 can be perpendicular to each other.

[0130] By providing the first link 230, a strong constraint is formed between the first rotating member 220 and the first fixed frame 250, thereby helping to prevent the first rotating member 220 from rotating relative to the first fixed frame 250. Similarly, by providing the second link 330, a strong constraint is formed between the second rotating member 320 and the second fixed frame 350, thereby helping to prevent the second rotating member 320 from rotating relative to the second fixed frame 350.

[0131] In summary, by setting the first link 230 and the second link 330, when the foldable electronic device 1 is impacted, such as when the foldable electronic device 1 is dropped, it is beneficial to prevent the first pivot assembly 200 or the second pivot assembly 300 from rotating relative to the main shaft 100, and to prevent the containment space P enclosed by the first pivot assembly 200, the second pivot assembly 300 and the main shaft 100 from squeezing the flexible screen 30, which is beneficial to improving the reliability of the flexible screen 30.

[0132] Figure 16A is a structural diagram of the first link 230 and the second link 330 of a rotating mechanism 10 provided in an embodiment of this application in an unfolded state; Figure 16B is a structural diagram of the first link 230 and the second link 330 of a rotating mechanism 10 provided in an embodiment of this application in an unfolded state.

[0133] Referring to Figure 16A, in some embodiments, when the rotating mechanism 10 is in the unfolded state, there may be an angle between the orthographic projection of the first axis L1 on the first reference plane and the orthographic projection of the second axis L2 on the first reference plane. This angle may be, for example, an acute angle, an obtuse angle, or a right angle. Alternatively, the angle may be 0°. The first reference plane is perpendicular to the first direction X, that is, the first reference plane is the plane containing the second direction Y and the third direction Z.

[0134] Similarly, when the rotating mechanism 10 is in the deployed state, there may be an angle between the orthographic projection of the third axis L3 on the first reference plane and the orthographic projection of the fourth axis L4 on the first reference plane. This angle may be, for example, an acute angle, an obtuse angle, or a right angle. Alternatively, the angle may be 0°.

[0135] Referring to FIG16A, in some embodiments, when the rotating mechanism 10 is in the unfolded state, the orthographic projection of the first axis L1 on the first reference plane and the orthographic projection of the second axis L2 on the first reference plane may have a first included angle K1, and the angle between the first sliding direction F1 and the direction perpendicular to the support plane S may be equal to the first included angle K1.

[0136] For example, when the rotating mechanism 10 is in the deployed state, the first sliding direction F1 can be tilted to the left relative to the third direction Z in Figure 16A. Alternatively, in some other embodiments, the first included angle K1 can also be equal to zero, that is, the first axis L1 and the second axis L2 are parallel to each other, and when the rotating mechanism 10 is in the deployed state, the first sliding direction F1 is perpendicular to the direction of the supporting plane S. The direction perpendicular to the supporting plane S can be parallel to the third direction Z.

[0137] With the above settings, during the transition between the unfolded and folded states of the rotating mechanism 10, the first fixed frame 250 can form a strong constraint between the first connecting rod 230 and the first rotating member 220.

[0138] Similarly, when the rotating mechanism 10 is in the unfolded state, the third axis L3 and the fourth axis L4 can have a second included angle K2 between their orthogonal projections on the first reference plane and the first reference plane. The angle between the second sliding direction F2 and the direction perpendicular to the support plane S can be equal to the second included angle K2. The first reference plane is perpendicular to the first direction X.

[0139] For example, when the rotating mechanism 10 is in the deployed state, the second sliding direction F2 can be tilted to the right relative to the third direction Z in Figure 16A. Alternatively, in some other embodiments, the second included angle K2 can also be equal to zero, that is, the third axis L3 and the fourth axis L4 are parallel to each other, and when the rotating mechanism 10 is in the deployed state, the second sliding direction F2 is perpendicular to the direction of the supporting plane S. The direction perpendicular to the supporting plane S can be parallel to the third direction Z.

[0140] With the above settings, during the transition between the unfolded and folded states of the rotating mechanism 10, the second fixed frame 350 can form a strong constraint between the second connecting rod 330 and the second rotating member 320.

[0141] Further, referring to Figure 16B, when the rotating mechanism 10 is in the folded state, the angle between the first sliding direction F1 and the second direction Y is equal to the first included angle K1, and the angle between the second sliding direction F2 and the second direction Y is equal to the second included angle K2. With the above settings, both the first fixed frame 250 and the second fixed frame 350 can rotate 90 degrees relative to the main shaft 100.

[0142] As described in the above embodiments, when the rotating mechanism 10 is in the unfolded state, the first sliding direction F1 can be tilted to the left relative to the third direction Z in Figure 16A, and the second sliding direction F2 can be tilted to the right relative to the third direction Z in Figure 16A.

[0143] Referring to Figures 10 and 15, when the rotating mechanism 10 is in the unfolded state, in the second direction Y, the distance between the first end 251a of the first slide groove and the main shaft 100 is less than the distance between the second end 251b of the first slide groove and the main shaft 100. In the direction perpendicular to the support plane S, the distance between the first end 251a of the first slide groove and the support plane S is greater than the distance between the second end 251b of the first slide groove and the support plane S.

[0144] For example, the first slide groove 251 can extend through the first fixing frame 250 along the first sliding direction F1. The first slide groove 251 can be a rectangular slide groove, with the first end 251a being the bottom end and the second end 251b being the top end. Correspondingly, the first slider 222 can be a rectangular slider, which can be slidably connected to the first slide groove 251, so that the second end 220b of the first rotating member is slidably connected to the first fixing frame 250. With the above configuration, the extending direction of the first slide groove 251 can have a first included angle K1 with respect to the support plane S.

[0145] Similarly, in the second direction Y, when the rotating mechanism 10 is in the unfolded state, the distance between the first end 351a of the second slide groove and the main shaft 100 is less than the distance between the second end 351b of the second slide groove and the main shaft 100. In the direction perpendicular to the support plane S, the distance between the first end 351a of the second slide groove and the support plane S is greater than the distance between the second end 251b of the first slide groove and the support plane S.

[0146] For example, the second slide groove 351 can penetrate the second fixed frame 350 along the second sliding direction F2. The second slide groove 351 can be a rectangular slide groove, with the first end 351a being the bottom end and the second end 351b being the top end. Correspondingly, the second slider 322 can be a rectangular slider, which can be slidably connected to the second slide groove 351, so that the second end 320b of the second rotating member is slidably connected to the second fixed frame 350. With the above arrangement, the extension direction of the second slide groove 351 can have a second included angle K2 with respect to the support plane S.

[0147] During the transition from the unfolded state to the folded state, the first slider 222 moves relative to the first slide groove 251 along the direction from the second end 251b of the first slide groove to the first end 251a of the first slide groove, and the second slider 322 moves relative to the second slide groove 351 along the direction from the second end 351b of the second slide groove to the first end 351a of the second slide groove.

[0148] During the transition from the folded state to the unfolded state, the first slider 222 moves relative to the first slide groove 251 in the direction from the first end 251a of the first slide groove to the second end 251b of the first slide groove, and the second slider 322 moves relative to the second slide groove 351 in the direction from the first end 351a of the second slide groove to the second end 351b of the second slide groove.

[0149] Referring to Figures 10 and 15, with the above-described configuration, during the transition of the rotating mechanism 10 from the unfolded state to the folded state, the first fixed frame 250 slides away from the main shaft 100 relative to the first rotating member 220, and the second fixed frame 350 slides away from the main shaft 100 relative to the second rotating member 320. Correspondingly, during the transition of the rotating mechanism 10 from the folded state to the unfolded state, the first fixed frame 250 slides closer to the main shaft 100 relative to the first rotating member 220, and the second fixed frame 350 slides closer to the main shaft 100 relative to the second rotating member 320. This facilitates adjustment of the length between the first fixed frame 250 and the second fixed frame 350, ensuring that the length of the flexible screen 30 remains unchanged during the unfolding or folding of the rotating mechanism 10, and mitigating the squeezing or stretching phenomenon of the rotating mechanism 10 on the flexible screen 30. Figure 17A is an assembly structure diagram of the first connecting rod 230 and the second connecting rod 330 with other parts; Figure 17B is a front view of the first connecting rod 230 and the second connecting rod 330.

[0150] Referring to Figures 17A, 17B, 13, and 12, in some embodiments, the first end 230a of the first connecting rod and the first rotating member 220 can be rotatably connected via a first rotating shaft 410. For example, the first end 230a of the first connecting rod may include a first through hole 231, and correspondingly, the first rotating member 220 may include a first mating through hole 228. For instance, the first mating through hole 228 may penetrate a portion of the first rotating member 220 along the second direction Y. The first rotating shaft 410 passes through the first through hole 231 of the first end 230a of the first connecting rod and the mating through hole 328 of the first rotating member 220, thereby rotatably connecting the first end 230a of the first connecting rod and the second end 220b of the first rotating member. In some embodiments, the third end 220c and the fourth end 220d of the first rotating member are arranged along the first direction X. The orthographic projections of the third end 220c of the first rotating member, the first end 230a of the first connecting rod, and the second end 230b of the first connecting rod onto the second reference plane are arranged sequentially along the first direction X. The fourth end 220d of the first rotating member is rotatably connected to the first end 230a of the first connecting rod. The second reference plane may be parallel to the support plane S.

[0151] For example, since both the first rotating member 220 and the first connecting rod 230 are three-dimensional structures, the third end 220c of the first rotating member, the first end 230a of the first connecting rod, and the second end 230b of the first connecting rod can have different heights in the third direction Z. The fourth end 220d of the first rotating member can have a first recess 227, and the sidewall of the first recess 227 can be provided with a first mating through hole 228. The first rotating shaft 410 passes through the first mating through hole 228 so that the first end 230a of the first connecting rod is installed in the first recess 227 through the first rotating shaft 410.

[0152] The above arrangement improves the compactness of the assembly between the first rotating member 220 and the first connecting rod 230 in the first direction X, and helps to reduce the size of the first rotating shaft assembly 200 along the first direction X. Simultaneously, assembling the first rotating member 220 and the first connecting rod 230 along the first direction X also reduces the size of the first rotating shaft assembly 200 along the third direction Z.

[0153] Figure 18 is a cross-sectional view along section line BB of the rotating mechanism 10 in Figure 5 when it is in the unfolded state. Figure 19 is a cross-sectional view along section line BB of the rotating mechanism 10 in Figure 5 when it is in the folded state. As shown in Figures 16A, 18, and 19, when the rotating mechanism 10 is in the unfolded state, the extension direction of the first rotating shaft 410 can be parallel to the support plane S. For example, the distance between the first end 410a of the first rotating shaft and the main shaft 100 is less than the distance between the second end 410b of the first rotating shaft and the main shaft 100. The extension direction of the first rotating shaft 410 is from the first end 410a to the second end 410b of the first rotating shaft. With the above arrangement, in the direction perpendicular to the support plane S, it is beneficial to reduce the size of the first rotating shaft 410, which in turn is beneficial to reduce the thickness of the first rotating shaft assembly 200, and avoid the first rotating shaft assembly 200 occupying a large space in the thickness direction.

[0154] Similarly, the first end 330a of the second connecting rod is rotatably connected to the second rotating member 320 via the second rotating shaft 510. For example, the first end 330a of the second connecting rod may include a second through hole 331, and correspondingly, the second rotating member 320 may include a second mating through hole 328. For instance, the second mating through hole 328 may penetrate a portion of the first rotating member 320 along the second direction Y. The second rotating shaft 510 passes through the second through hole 331 of the first end 330a of the second connecting rod and the second mating through hole 328 of the second rotating member 320, so that the first end 330a of the second connecting rod is rotatably connected to the second end 320b of the second rotating member. In some embodiments, the third end 320c of the second rotating member and the fourth end 320d of the second rotating member are arranged along the first direction X. The orthographic projections of the third end 320c of the second rotating member, the first end 330a of the second connecting rod, and the second end 330b of the second connecting rod on the second reference plane are arranged sequentially along the first direction X. The fourth end 320d of the second rotating member is rotatably connected to the first end 330a of the second connecting rod.

[0155] For example, since both the second rotating member 320 and the second connecting rod 330 are three-dimensional structures, the third end 320c of the second rotating member, the first end 330a of the second connecting rod, and the second end 330b of the second connecting rod may have different heights in the third direction Z. The fourth end 320d of the second rotating member may have a second recess 327, and the sidewall of the second recess 327 may be provided with a second mating through hole 328. The second rotating shaft 510 passes through the second mating through hole 328 so that the first end 330a of the second connecting rod is mounted in the second recess 327 through the second rotating shaft 510.

[0156] The above arrangement improves the compactness of the assembly between the second rotating member 320 and the second connecting rod 330 in the first direction X, and helps to reduce the size of the second rotating shaft assembly 300 along the first direction X. Simultaneously, assembling the second rotating member 320 and the second connecting rod 330 along the first direction X also reduces the size of the second rotating shaft assembly 300 along the third direction Z.

[0157] When the rotating mechanism 10 is in the unfolded state, the extension direction of the second rotating shaft 510 can be parallel to the support plane S. For example, the distance between the first end 510a of the second rotating shaft and the main shaft 100 is less than the distance between the second end 510b of the second rotating shaft and the main shaft 100. The direction from the first end 510a to the second end 510b of the second rotating shaft is the extension direction of the second rotating shaft 510. With this arrangement, in the direction perpendicular to the support plane S, it is beneficial to reduce the space occupied by the second rotating shaft 510, thereby reducing the thickness of the second rotating shaft assembly 300 and avoiding the second rotating shaft assembly 300 occupying a large space in the thickness direction.

[0158] Referring to Figures 18 and 19, furthermore, the extension direction of the first rotating shaft 410 and the extension direction of the second rotating shaft 510 can both be perpendicular to the first direction X. During the transition from the unfolded state to the folded state, for example, the first rotating member 220 rotates 90 degrees relative to the main shaft 100, and the second rotating member 320 rotates 90 degrees relative to the main shaft 100.

[0159] By providing the first link 230, a strong constraint is formed between the first rotating member 220 and the first fixed frame 250, thereby helping to prevent the first rotating member 220 from rotating relative to the first fixed frame 250. Similarly, by providing the second link 330, a strong constraint is formed between the second rotating member 320 and the second fixed frame 350, thereby helping to prevent the second rotating member 320 from rotating relative to the second fixed frame 350.

[0160] During the transition from the unfolded state to the folded state, the rotating mechanism 10, through the strong constraint formed between the first rotating component 220 and the first fixed frame 250 by the first connecting rod 230, and through the strong constraint formed between the second rotating component 320 and the second fixed frame 350 by the second connecting rod 330, prevents the first rotating shaft assembly 200 or the second rotating shaft assembly 300 from rotating relative to the main shaft 100 when the folded electronic device 1 is impacted, such as when the folded electronic device 1 is dropped. This also prevents the containment space P enclosed by the first rotating shaft assembly 200, the second rotating shaft assembly 300, and the main shaft 100 from squeezing the flexible screen 30, thereby improving the reliability of the flexible screen 30.

[0161] For example, when both the first fixing frame 250 and the second fixing frame 350 rotate 90 degrees relative to the main shaft 100, the first rotating member 220 and the second rotating member 320 also rotate 90 degrees relative to the main shaft 100. This avoids the situation where the angle of rotation of the first rotating member 220 and the second rotating member 320 relative to the main shaft 100 is too large (e.g., the angle of rotation is greater than 90 degrees), resulting in a small accommodating space P enclosed by the first rotating shaft assembly 200, the main shaft 100, and the second rotating shaft assembly 300, which could compress the flexible screen 30 located within the accommodating space P. Simultaneously, it also avoids the situation where the angle of rotation of the first rotating member 220 and the second rotating member 320 relative to the main shaft 100 is too small (e.g., the angle of rotation is less than 90 degrees), resulting in a large dimension of the first rotating shaft assembly 200 and the second rotating shaft assembly 300 in the thickness direction when the rotating mechanism 10 is in the folded state.

[0162] Continuing with reference to Figures 17A, 17B, 14, and 12, based on the above structure, the second end 230b of the first connecting rod and the first fixing frame 250 can be rotatably connected via a third rotating shaft 420. For example, the second end 230b of the first connecting rod may include a third through hole 232, and correspondingly, the first fixing frame 250 may include a through hole. The third rotating shaft 420 passes through the third through hole 232 of the second end 230b of the first connecting rod and the through hole of the first fixing frame 250, so that the second end 230b of the first connecting rod is rotatably connected to the first fixing frame 250.

[0163] For example, the first mounting bracket 250 may include a first body 257 and a first mounting portion 258 connected to each other. The first mounting portion 258 may be connected to the side of the first body 257 near the first connecting rod 230.

[0164] The first mounting portion 258 may be generally plate-shaped, and the first fixing frame 250 may include two third mating holes 259 respectively provided on the first mounting portion 258 and the first body 257. For example, one third mating hole 259 may be provided on a protrusion on the first mounting portion 258, and the other third mating hole 259 may be provided on the side of the first body 257 facing the first mounting portion 258, so that the two third mating holes 259 are spaced apart in the second direction Y. The third rotating shaft 420 may pass through the third through hole 232 of the second end 230b of the first connecting rod and the two third mating holes 259 of the first fixing frame 250, so that the second end 230b of the first connecting rod is installed in the space enclosed by the first mounting portion 258 and the first body 257.

[0165] Furthermore, at least a portion of the first connecting rod 230 can be arranged sequentially with the first mounting portion 258 along a third direction, and at least a portion of the first connecting rod 230 can overlap with the first fixing frame 250 along a first direction X. For example, in the third direction Z, the second end 230b of the first connecting rod can overlap with the first mounting portion 258, and in the first direction X, the second end 230b of the first connecting rod can overlap with the first fixing frame 250. This arrangement improves the assembly compactness between the first connecting rod 230 and the first fixing frame 250, reduces the space occupied by the first connecting rod 230, and achieves a thinner and lighter rotating mechanism 10.

[0166] Figure 20 is a cross-sectional view along the CC section line when the rotating mechanism 10 in Figure 5 is in the unfolded state. As shown in Figure 20, when the rotating mechanism 10 is in the unfolded state, the extension direction of the third rotating shaft 420 can intersect with the support plane S. As described in the above embodiment, since the extension direction of the first rotating shaft 410 is parallel to the support plane S, the above arrangement allows the orthographic projection of the third rotating shaft 420 on the first reference plane to intersect with the orthographic projection of the first rotating shaft 410 on the first reference plane.

[0167] Furthermore, when the rotating mechanism 10 is in the deployed state, the distance between the first end 420a of the third rotating shaft and the main shaft 100 can be less than the distance between the second end 420b of the third rotating shaft and the main shaft 100. In the direction perpendicular to the support plane S, the distance between the first end 420a of the third rotating shaft and the support plane S is less than the distance between the second end 420b of the third rotating shaft and the support plane S. For example, the direction from the first end 420a to the second end 420b of the third rotating shaft can be tilted away from the support plane S. Through the above arrangement, a first included angle K1 can be formed between the orthographic projection of the first axis L1 on the first reference plane and the orthographic projection of the second axis L2 on the first reference plane.

[0168] Similarly, the second end 330b of the second link is rotatably connected to the second fixing frame 350 via a fourth rotating shaft 520. For example, the second end 330b of the second link may include a fourth through hole 332, and correspondingly, the second fixing frame 350 may include a through hole. The fourth rotating shaft 520 passes through the fourth through hole 332 of the second end 330b of the second link and the through hole of the second fixing frame 350, so that the second end 330b of the second link is rotatably connected to the second fixing frame 350.

[0169] For example, the second mounting bracket 350 may include a second body 357 and a second mounting portion 358 that are interconnected. The second mounting portion 358 may be connected to the side of the second body 357 near the second link 330.

[0170] The second mounting portion 358 can be generally plate-shaped. The first fixing bracket 250 can be respectively provided with two fourth mating holes 359 on the second body 357 and the second mounting portion 358. For example, one fourth mating hole 359 can be provided on a protrusion on the second mounting portion 358, and the other fourth mating hole 359 can be provided on the side of the second body 357 facing the second mounting portion 358, so that the two fourth mating holes 359 are spaced apart in the second direction Y. The fourth rotating shaft 520 can pass through the fourth through hole 332 and the two fourth mating holes 359, so that the second end 330b of the second connecting rod is installed in the space enclosed by the second mounting portion 358 and the second body 357.

[0171] Furthermore, at least a portion of the second link 330 can be arranged sequentially with the second mounting portion 358 along the third direction Z, and at least a portion of the second link 330 can overlap with the second body 357 along the first direction X. For example, in the third direction Z, the second end 330b of the second link can overlap with the second mounting portion 358, and in the first direction X, the second end 330b of the second link can overlap with the second body 357. This arrangement improves the assembly compactness between the second link 330 and the second fixed frame 350, reduces the space occupied by the second link 330, and achieves a thinner and lighter rotating mechanism 10.

[0172] When the rotating mechanism 10 is in the extended state, the extension direction of the fourth rotating shaft 520 intersects the support plane S. As described in the above embodiment, the extension direction of the second rotating shaft 510 is parallel to the support plane S. Through the above arrangement, the orthographic projection of the fourth rotating shaft 520 on the first reference plane can intersect with the orthographic projection of the second rotating shaft 510 on the first reference plane.

[0173] Furthermore, when the rotating mechanism 10 is in the deployed state, the distance between the first end 520a of the fourth rotating shaft and the main shaft 100 is less than the distance between the second end 520b of the fourth rotating shaft and the main shaft 100. In the direction perpendicular to the support plane S, the distance between the first end 520a of the fourth rotating shaft and the support plane S is less than the distance between the second end 520b of the fourth rotating shaft and the support plane S. For example, the direction from the first end 520a to the second end 520b of the fourth rotating shaft can be tilted towards the support plane S. Through the above arrangement, a second included angle K2 can be formed between the orthographic projection of the second axis L2 on the first reference plane and the orthographic projection of the fourth axis L4 on the first reference plane.

[0174] Figure 21 is a cross-sectional view along the CC section line of the rotating mechanism 10 in Figure 5 when it is in the folded state. In some embodiments, referring to Figures 20 and 21, the extension direction of the third rotating shaft 420 and the extension direction of the fourth rotating shaft 520 can both be perpendicular to the first direction X. For example, during the transition from the unfolded state to the folded state, the first rotating member 220 rotates 90 degrees relative to the main shaft 100, and the second rotating member 320 rotates 90 degrees relative to the main shaft 100.

[0175] With the above configuration, during the transition from the unfolded state to the folded state, the first rotating component 220 and the first fixed frame 250 are strongly constrained by the first connecting rod 230, and the second rotating component 320 and the second fixed frame 350 are strongly constrained by the second connecting rod 330. This ensures that when both the first fixed frame 250 and the second fixed frame 350 rotate 90 degrees relative to the main shaft 100, both the first rotating component 220 and the second rotating component 320 also rotate 90 degrees relative to the main shaft 100. This avoids the situation where the angle of rotation of the first rotating component 220 and the second rotating component 320 relative to the main shaft 100 is too large (e.g., greater than 90 degrees), resulting in a small accommodating space P enclosed by the first rotating shaft assembly 200, the main shaft 100, and the second rotating shaft assembly 300, which could compress the flexible screen 30 located within the accommodating space P. At the same time, it can also avoid the phenomenon that the first rotating component 220 and the second rotating component 320 have a large thickness dimension when the rotating mechanism 10 is in the folded state, because the angle of rotation of the first rotating component 220 and the second rotating component 320 relative to the main shaft 100 is too small (for example, the angle of rotation is less than 90 degrees).

[0176] Referring to Figure 16A, when the rotating mechanism 10 is in the unfolded state, the distance between the second end 410b of the first rotating shaft and the supporting plane S is less than the distance between the second end 420b of the third rotating shaft and the supporting plane S, and the distance between the second end 510b of the second rotating shaft and the supporting plane S is less than the distance between the second end 520b of the fourth rotating shaft and the supporting plane S.

[0177] On the third direction Z, the distance between the orthographic projection of the second end 410b of the first rotating shaft on the first reference plane and the orthographic projection of the second end 420b of the third rotating shaft on the first reference plane is the first spacing h1, and the distance between the orthographic projection of the second end 510b of the second rotating shaft on the first reference plane and the orthographic projection of the second end 520b of the fourth rotating shaft on the first reference plane is the second spacing h2.

[0178] During the transition of the rotating mechanism 10 from the unfolded state to the folded state, in the thickness direction of the first rotating shaft assembly 200, the distance between the orthographic projection of the second end 410b of the first rotating shaft on the first reference surface and the orthographic projection of the second end 420b of the third rotating shaft on the first reference surface is less than the first spacing h1. In the thickness direction of the second rotating shaft assembly 300, the distance between the orthographic projection of the second end 510b of the second rotating shaft on the first reference surface and the orthographic projection of the second end 520b of the fourth rotating shaft on the first reference surface is less than the second spacing h2.

[0179] During the transition from the unfolded state to the folded state of the rotating mechanism 10, both the first rotating shaft assembly 200 and the second rotating shaft assembly 300 rotate relative to the main shaft, causing changes in the thickness directions of both assemblies. In some examples, the thickness direction of the first rotating shaft assembly 200 may be perpendicular to the extension direction of the first rotating shaft 410, and the thickness direction of the second rotating shaft assembly 300 may be perpendicular to the extension direction of the second rotating shaft 510.

[0180] Referring to Figure 16B, when the rotating mechanism 10 is in the folded state, in the second direction Y, the distance between the orthographic projection of the second end 410b of the first rotating shaft on the first reference plane and the orthographic projection of the second end 420b of the third rotating shaft on the first reference plane is the third spacing h3, and the distance between the orthographic projection of the second end 510b of the second rotating shaft on the first reference plane and the orthographic projection of the second end 520b of the fourth rotating shaft on the first reference plane is the fourth spacing h4. The third spacing h3 is less than the first spacing h1, and the fourth spacing h4 is less than the second spacing h2.

[0181] With the above settings, during the transition of the rotating mechanism 10 from the unfolded state to the folded state, the space occupied by the first rotating shaft 410 and the third rotating shaft 420 in the thickness direction of the first rotating shaft assembly 200 is reduced, and the space occupied by the second rotating shaft 510 and the fourth rotating shaft 520 in the thickness direction of the second rotating shaft assembly 300 is reduced, which is conducive to realizing the thinness and lightness of the foldable electronic device.

[0182] Referring to Figure 16A, when the rotating mechanism 10 is in the unfolded state, the first structural member 21 and the second structural member 22 can also be used to support the flexible screen 30, and the support surface of the first structural member 21 can be coplanar with the support plane S, and the support surface of the second structural member 22 can be coplanar with the support plane S.

[0183] The plane on which the support surface of the first structural member 21 is located can be, for example, the plane at SS1 in Figure 16A, and the plane on which the support surface of the second structural member 22 is located can be, for example, the plane at SS2 in Figure 16A.

[0184] There is a first distance H1 between the second end 410b of the first rotating shaft and the plane where the support surface of the first structural member 21 is located. The first distance H1 is less than the distance between the second end 420b of the third rotating shaft and the plane where the support surface of the first structural member 21 is located. There is a second distance H2 between the second end 510b of the second rotating shaft and the plane where the support surface of the second structural member 22 is located. The second distance H2 is less than the distance between the second end 520b of the fourth rotating shaft and the plane where the support surface of the second structural member 22 is located.

[0185] During the transition of the rotating mechanism 10 from the unfolded state to the folded state, the second end 410b of the first rotating shaft moves relative to the first fixed frame 250 along the first sliding direction F1, and the second end 510b of the second rotating shaft moves relative to the second fixed frame 350 along the second sliding direction F2.

[0186] Referring again to Figure 16B, when the rotating mechanism 10 is in the folded state, the folding electronic device 1 is also in the folded state. The extension direction of the first rotating shaft 410 is parallel to the support surface of the first structural member 21, and the extension direction of the second rotating shaft 510 is parallel to the support surface of the second structural member 22. That is, during the process of the rotating mechanism 10 changing from the unfolded state to the folded state, both the first structural member 21 and the second structural member 22 rotate 90 degrees relative to the main shaft.

[0187] The plane on which the support surface of the first structural member 21 is located can be, for example, the plane at SS3 in Figure 16B, and the plane on which the support surface of the second structural member 22 is located can be, for example, the plane at SS4 in Figure 16B.

[0188] Furthermore, the distance between the second end 410b of the first rotating shaft and the plane containing the support surface of the first structural member 21 is greater than the first distance H1, and the distance between the second end 510b of the second rotating shaft and the plane containing the support surface of the second structural member 22 is greater than the second distance H2.

[0189] Since the relative position between the second end 420b of the third rotating shaft and the first structural member 21 remains unchanged, and the relative position between the second end 520b of the fourth rotating shaft and the second structural member 22 remains unchanged, during the process of the rotating mechanism 10 changing from the unfolded state to the folded state, the second end 410b of the first rotating shaft also moves relative to the second end 420b of the third rotating shaft, and the second end 510b of the second rotating shaft also moves relative to the second end 52b of the fourth rotating shaft.

[0190] Figure 22A is a structural diagram showing the relative positions of the first and third rotating shafts as orthographic projections onto the first reference plane in their unfolded state. The dashed lines in the figure indicate the position of the first rotating shaft relative to the third rotating shaft when it is in the unfolded state. Figure 22B is a structural diagram showing the relative positions of the second and fourth rotating shafts as orthographic projections onto the first reference plane in their folded state. The dashed lines in the figure indicate the position of the second rotating shaft relative to the fourth rotating shaft when it is in the unfolded state.

[0191] For example, during the process of the rotating mechanism 10 changing from the unfolded state to the folded state, the distance between the second end 410b of the first rotating shaft and the plane where the support surface of the first structural member 21 is located increases, and the distance between the second end 510b of the second rotating shaft and the plane where the support surface of the second structural member 22 is located increases.

[0192] As can be seen from Figures 22A and 22B, with the above configuration, when the second end 410b of the first rotating shaft moves relative to the first structural member 21, there is a process in which the distance between the orthographic projection of the second end 410b of the first rotating shaft on the first reference plane and the orthographic projection of the second end 420b of the third rotating shaft on the first reference plane gradually decreases in the thickness direction of the first rotating shaft assembly 200, which is beneficial to reduce the space occupied by the first connecting rod 230 in the thickness direction of the first rotating shaft assembly 200.

[0193] Similarly, when the second end 510b of the second rotating shaft moves relative to the second structural member 22, there is a process in which the distance between the orthographic projection of the second end 510b of the second rotating shaft on the first reference plane and the orthographic projection of the second end 520b of the fourth rotating shaft on the first reference plane gradually decreases in the thickness direction of the second rotating shaft assembly 300, which is beneficial to reduce the space occupied by the second connecting rod 330 in the thickness direction of the second rotating shaft assembly 300.

[0194] Optionally, when the rotating mechanism 10 is in the folded state, the distance between the second end 410b of the first rotating shaft and the plane containing the supporting surface of the first structural member 21 is less than or equal to the distance between the second end 420b of the third rotating shaft and the plane containing the supporting surface of the first structural member 21. The distance between the second end 510b of the second rotating shaft and the plane containing the supporting surface of the second structural member 22 is less than or equal to the distance between the second end 520b of the fourth rotating shaft and the plane containing the supporting surface of the second structural member 22.

[0195] With the above configuration, when the second end 410b of the first rotating shaft moves relative to the first structural member 21, the distance between the orthographic projection of the second end 410b of the first rotating shaft on the first reference surface and the orthographic projection of the second end 420b of the third rotating shaft on the first reference surface gradually decreases in the thickness direction of the first rotating shaft assembly 200. This distance does not decrease to 0 and then gradually increase, which is beneficial to further reduce the space occupied by the first connecting rod 230 in the thickness direction of the first rotating shaft assembly 200.

[0196] Similarly, when the second end 510b of the second rotating shaft moves relative to the second structural member 22, the distance between the orthographic projection of the second end 510b of the second rotating shaft on the first reference plane and the orthographic projection of the second end 520b of the fourth rotating shaft on the first reference plane gradually decreases in the thickness direction of the second rotating shaft assembly 300. This distance does not decrease to 0 and then gradually increase, which is beneficial to further reduce the space occupied by the second connecting rod 330 in the thickness direction of the second rotating shaft assembly 300.

[0197] Furthermore, when the rotating mechanism 10 is in the unfolded state, there is a third distance H3 between the first end 410a of the first rotating shaft and the plane where the support surface of the first structural member 21 is located (e.g., the plane at SS1 in Figure 16A). The third distance H3 can be less than the distance between the first end 420a of the third rotating shaft and the plane where the support surface of the first structural member 21 is located. There is a fourth distance H4 between the first end 510a of the second rotating shaft and the plane where the support surface of the second structural member 22 is located (e.g., the plane at SS2 in Figure 16A). The fourth distance H4 can be less than the distance between the first end 520a of the fourth rotating shaft and the plane where the support surface of the second structural member 22 is located.

[0198] During the transition of the rotating mechanism 10 from the unfolded state to the folded state, the first end 410a of the first rotating shaft moves relative to the first structural member 21 along the first sliding direction F1, and the first end 510a of the second rotating shaft moves relative to the second structural member 22 along the second sliding direction F2.

[0199] When the rotating mechanism 10 is in the folded state, along the second direction Y, the distance between the first end 410a of the first rotating shaft and the plane where the support surface of the first structural member 21 is located (e.g., the plane at SS3 in Figure 16B) is greater than the third distance H3, and the distance between the first end 510a of the second rotating shaft and the plane where the support surface of the second structural member 22 is located (e.g., the plane at SS4 in Figure 16B) is greater than the fourth distance H4.

[0200] Since the position of the first end 420a of the third rotating shaft relative to the first structural member 21 remains unchanged, and the position of the first end 520a of the fourth rotating shaft relative to the second structural member 22 remains unchanged, during the process of the rotating mechanism 10 changing from the unfolded state to the folded state, the first end 410a of the first rotating shaft also moves relative to the first end 420a of the third rotating shaft, and the first end 510a of the second rotating shaft also moves relative to the first end 520a of the fourth rotating shaft.

[0201] For example, during the process of the rotating mechanism 10 changing from the unfolded state to the folded state, the distance between the first end 410a of the first rotating shaft and the plane where the support surface of the first structural member 21 is located increases, and the distance between the first end 510a of the second rotating shaft and the plane where the support surface of the second structural member 22 is located increases.

[0202] As shown in Figure 22A, when the first end 410a of the first rotating shaft moves relative to the first structural member 21, there is a process in which the distance between the orthographic projection of the first end 410a of the first rotating shaft on the first reference plane and the orthographic projection of the first end 420a of the third rotating shaft on the first reference plane gradually decreases in the thickness direction of the first rotating shaft assembly 200, which is beneficial to reduce the space occupied by the first connecting rod 230 in the thickness direction of the first rotating shaft assembly 200.

[0203] Similarly, when the first end 510a of the second rotating shaft moves relative to the second structural member 22, there is a process in which the distance between the orthographic projection of the first end 510a of the second rotating shaft on the first reference plane and the orthographic projection of the first end 520a of the fourth rotating shaft on the first reference plane gradually decreases in the thickness direction of the second rotating shaft assembly 300, which is beneficial to reduce the space occupied by the second connecting rod 330 in the thickness direction of the second rotating shaft assembly 300.

[0204] Based on the above structure, when the rotating mechanism 10 is in the folded state, the distance between the first end 410a of the first rotating shaft and the plane containing the supporting surface of the first structural member 21 is greater than the distance between the first end 420a of the third rotating shaft and the plane containing the supporting surface of the first structural member 21. The distance between the first end 510a of the second rotating shaft and the plane containing the supporting surface of the second structural member 22 is greater than the distance between the first end 520a of the fourth rotating shaft and the plane containing the supporting surface of the second structural member 22.

[0205] As described in the above embodiments, the distance between the first end 420a of the third rotating shaft and the plane containing the support surface of the first structural member 21 is less than the distance between the second end 420b of the third rotating shaft and the plane containing the support surface of the first structural member 21. Similarly, the distance between the first end 520a of the fourth rotating shaft and the plane containing the support surface of the second structural member 22 is less than the distance between the second end 520b of the fourth rotating shaft and the plane containing the support surface of the second structural member 22.

[0206] With the above settings, during the transition of the rotating mechanism 10 from the unfolded state to the folded state, the distance between the orthographic projection of the second end 410b of the first rotating shaft on the first reference surface and the orthographic projection of the second end 420b of the third rotating shaft on the first reference surface is further reduced in the thickness direction of the first rotating shaft assembly 200, and the distance between the orthographic projection of the second end 510b of the second rotating shaft on the first reference surface and the orthographic projection of the second end 520b of the fourth rotating shaft on the first reference surface is further reduced in the thickness direction of the second rotating shaft assembly 300. This is beneficial to further reduce the space occupied by the first connecting rod 230 in the thickness direction of the first rotating shaft assembly 200, and the space occupied by the second connecting rod 330 in the thickness direction of the second rotating shaft assembly 300.

[0207] In some embodiments, as shown in Figures 19 and 20, the first rotating shaft 410 and the first through hole 231 can be clearance-fitted. During the transition from an unfolded state to a folded state, the first end 230a of the first connecting rod rotates relative to the first rotating member 220 via the first rotating shaft 410, and also slides relative to the first fixed frame 250. To achieve smooth movement among the three rigid members—the first connecting rod 230, the first rotating member 220, and the first fixed frame 250—relative movement exists between the first rotating shaft 410 and the first end 230a of the first connecting rod. This arrangement helps to avoid interference between the relative movement of the first rotating shaft 410 and the first end 230a of the first connecting rod.

[0208] Further, referring to Figure 20, the distance between the first end 231a of the first through hole and the main shaft 100 is less than the distance between the second end 231b of the first through hole and the main shaft 100. Figure 23A is a cross-sectional view of the rotating mechanism in Figure 19 along the R1-R1 section line, and Figure 23B is a cross-sectional view of the rotating mechanism 10 in Figure 19 along the R2-R2 section line. Referring to Figures 23A and 23B, the size of the first end 231a of the first through hole is less than the size of the second end 231b of the first through hole. In some embodiments, the size of the first through hole 231 can gradually increase in the direction from the first end 231a to the second end 231b of the first through hole.

[0209] Figure 24A is a cross-sectional view of the rotating mechanism in Figure 20 along the T1-T1 section line, and Figure 24B is a cross-sectional view of the rotating mechanism 10 in Figure 20 along the T2-T2 section line.

[0210] Referring to Figures 23A, 23B, 24A, and 24B, when the rotating mechanism 10 is transitioning from an unfolded state to a folded state, the first end 230a of the first link rotates relative to the second end 230b of the first link. In the first direction X, the component of the rotational motion of the first end 230a of the first link causes the first end 230a of the first link to move towards the first rotating member 220 relative to the second end 230b of the first link, which means that the first end 230a of the first link moves relative to the second end 230b of the first link in the direction to the right in Figure 23.

[0211] Because the distance between the first end 230a of the first link near the main shaft 100 (g1 in Figures 23A and 24A) and the first end 420a of the third rotating shaft is less than the distance between the first end 230a of the first link away from the main shaft 100 (g2 in Figures 23B and 24B) and the second end 420b of the third rotating shaft. When the first end 230a of the first link rotates relative to the second end 230b of the first link, the distance the first end 230a of the first link near the main shaft 100 (g1 in Figures 23A and 24A) moves in the first direction X is less than the distance the first end 230a of the first link away from the main shaft 100 (g2 in Figures 23B and 24B) moves in the first direction X.

[0212] In this embodiment of the application, by making the size of the first end 231a of the first through hole smaller than the size of the second end 231b of the first through hole, interference between the relative movement of the first rotating shaft 410 and the first end 230a of the first connecting rod can be avoided when the rotating mechanism 10 is transitioning from the unfolded state to the folded state.

[0213] In some embodiments, as shown in Figures 23A, 23B, 24A, and 24B, the first through hole 231 may include a first hole wall 233 and a second hole wall 234. In the first direction X, the distance between the first hole wall 233 and the third rotating shaft 420 is greater than the distance between the second hole wall 234 and the third rotating shaft 420. When the rotating mechanism 10 is in the extended state, the direction from the second hole wall 234 to the first hole wall 233 is inclined towards the support plane S. Exemplarily, the first through hole 231 may be generally oval or strip-shaped. With the above arrangement, the first end 230a of the first connecting rod can move relative to the first rotating shaft 410.

[0214] In some embodiments, during the transition of the rotating mechanism 10 from an unfolded state to a folded state, the first rotating shaft 410 moves relative to the first through hole 231 in a direction from the first hole wall 233 to the second hole wall 234. That is, the second end 410b of the first rotating shaft moves in the first through hole 231 in a direction from the first hole wall 233 to the second hole wall 234.

[0215] During the transition from a folded state to an unfolded state, the first rotating shaft 410 moves relative to the first through hole 231 along the direction from the second hole wall 234 to the first hole wall 233. That is, the second end 410b of the first rotating shaft moves within the first through hole 231 in the direction from the second hole wall 234 to the first hole wall 233.

[0216] Based on the above structure, the second end 230b of the first connecting rod may include a third through hole 232, and the third rotating shaft 420 is rotatably disposed within the third through hole 232. When the rotating mechanism 10 is in the unfolded state, the distance between the first end 232a of the third through hole and the main shaft 100 is less than the distance between the second end 232b of the third through hole and the main shaft 100. The third through hole 232 may be approximately cylindrical. That is, the dimensions of the third through hole 232 are equal in the direction from the first end 232a to the second end 232b.

[0217] Referring to Figures 19 and 20, similarly, the second rotating shaft 510 and the second through hole 331 are clearance-fitted. During the transition from the unfolded state to the folded state of the rotating mechanism 10, the first end 330a of the second connecting rod rotates relative to the second rotating member 320 via the second rotating shaft 510, and also slides relative to the second fixed frame 350. To achieve smooth movement among the three rigid components—the second connecting rod 330, the second rotating member 320, and the second fixed frame 350—relative movement exists between the second rotating shaft 510 and the first end 330a of the second connecting rod. This arrangement helps to avoid interference between the relative movement of the second rotating shaft 510 and the first end 330a of the second connecting rod.

[0218] Furthermore, the distance between the first end 331a of the second through hole and the main shaft 100 is less than the distance between the second end 331b of the second through hole and the main shaft 100. Figure 25A is a cross-sectional view of the rotating mechanism 10 in Figure 19 along the R3-R3 section line; Figure 25B is a cross-sectional view of the rotating mechanism 10 in Figure 19 along the R4-R4 section line.

[0219] Referring to Figures 25A and 25B, the size of the first end 331a of the second through hole is smaller than the size of the second end 331b of the second through hole. In some embodiments, the size of the second through hole 331 can gradually increase in the direction from the first end 331a to the second end 331b of the second through hole.

[0220] Figure 26A is a cross-sectional view of the rotating mechanism in Figure 20 along the T3-T3 section line, and Figure 26B is a cross-sectional view of the rotating mechanism 10 in Figure 20 along the T4-T4 section line.

[0221] Referring to Figures 25A, 25B, 26A, and 26B, during the transition of the rotating mechanism 10 from the unfolded state to the folded state, the first end 330a of the second link rotates relative to the second end 330b of the second link. In the first direction X, the component of the rotational motion of the first end 330a of the second link causes the first end 330a of the second link to move towards the second rotating member 320 relative to the second end 330b, which means that the first end 330a of the second link moves to the right side in Figure 25 relative to the second end 330b of the second link.

[0222] Because the distance between the first end 330a of the second link near the main shaft 100 (g3 in Figures 25A and 26A) and the first end 520a of the fourth rotating shaft is less than the distance between the first end 330a of the second link away from the main shaft 100 (g4 in Figures 25B and 26B) and the second end 520b of the fourth rotating shaft. When the first end 330a of the second link rotates relative to the second end 330b of the second link, the distance the first end 330a of the second link near the main shaft 100 (g3 in Figures 25A and 26A) moves in the first direction X is less than the distance the first end 330a of the second link away from the main shaft 100 (g4 in Figures 25B and 26B) moves in the first direction X.

[0223] In this embodiment of the application, by making the size of the first end 331a of the second through hole smaller than the size of the second end 331b of the second through hole, interference between the relative motion of the second rotating shaft 510 and the first end 330a of the second connecting rod can be avoided when the rotating mechanism 10 is transitioning from the unfolded state to the folded state.

[0224] Referring to Figures 25A, 25B, 26A, and 26B, the second through hole 331 includes a third hole wall 333 and a fourth hole wall 334. In the first direction X, the distance between the third hole wall 333 and the fourth rotating shaft 520 is greater than the distance between the fourth hole wall 334 and the fourth rotating shaft 520. When the rotating mechanism 10 is in the extended state, the direction from the fourth hole wall 334 to the third hole wall 333 is inclined towards the support plane S. For example, the second through hole 331 can be approximately oval or strip-shaped. With the above arrangement, the first end 330a of the second connecting rod can move relative to the second rotating shaft 510.

[0225] In some embodiments, during the transition of the rotating mechanism 10 from an unfolded state to a folded state, the second rotating shaft 510 moves relative to the second through hole 331 in a direction from the third hole wall 333 to the fourth hole wall 334. That is, the second end 510b of the second rotating shaft moves in the direction from the third hole wall 333 to the fourth hole wall 334 within the second through hole 331.

[0226] During the transition from a folded state to an unfolded state, the second rotating shaft 510 moves relative to the second through hole 331 in the direction from the fourth hole wall 334 to the third hole wall 333. That is, the second end 510b of the second rotating shaft moves in the direction from the fourth hole wall 334 to the third hole wall 333 within the second through hole 331.

[0227] The second end 330b of the second connecting rod may include a fourth through hole 332, and the fourth rotating shaft 520 is rotatably disposed within the fourth through hole 332. When the rotating mechanism 10 is in the unfolded state, the distance between the first end 332a of the fourth through hole and the main shaft 100 is less than the distance between the second end 332b of the fourth through hole and the main shaft 100. The fourth through hole 332 may be approximately cylindrical. That is, the dimensions of the fourth through hole 332 are equal in the direction from the first end 332a to the second end 332b of the fourth through hole.

[0228] Alternatively, in some other embodiments, the first through hole 231 and the second through hole 331 can both be approximately cylindrical, that is, the dimensions of the first through hole 231 are equal from the direction from the first end 231a to the second end 231b; the dimensions of the second through hole 331 are also equal from the direction from the first end 331a to the second end 331b. Correspondingly, the dimension of the first end 232a of the third through hole can be smaller than the dimension of the second end 232b, and the dimension of the first end 332a of the fourth through hole can be smaller than the dimension of the second end 332b. The third through hole 232 and the fourth through hole 332 can be approximately oval or strip-shaped.

[0229] Figure 27 is a front view of a first support plate 210 and a second support plate 310 provided in an embodiment of this application; Figure 28 is a structural diagram of a first support plate 210 and a second support plate 310 provided in an embodiment of this application. Figure 29 is a cross-sectional view along the DD section line when the rotating mechanism 10 in Figure 5 is in the unfolded state; Figure 30 is a cross-sectional view along the DD section line when the rotating mechanism 10 in Figure 5 is in the folded state. The structure of the first support plate 210 and the second support plate 310 and their connection relationship will be described below with reference to Figures 6, 7, 8, 27, 28, 29 and 30.

[0230] In some embodiments, the first rotating shaft assembly 200 may further include a first support plate 210, which may be slidably connected to the first rotating member 220 and rotatably connected to the first fixing frame 250.

[0231] When the rotating mechanism 10 is in the extended state, the first support plate 210 is located on the side of the first connecting rod 230 near the support plane S. For example, the first support plate 210 may also be located on the side of the first rotating member 220 and the first fixing frame 250 near the flexible screen 30. This arrangement improves the compactness of the first support plate 210 within the first rotating shaft assembly 200, which is beneficial for achieving a thinner and lighter first rotating shaft assembly 200.

[0232] In some embodiments, the second rotating shaft assembly 300 may further include a second support plate 310, which may be slidably connected to the second rotating member 320 and rotatably connected to the second fixing frame 350.

[0233] When the rotating mechanism 10 is in the extended state, the second support plate 310 is located on the side of the second connecting rod 330 near the supporting plane S. For example, the second support plate 310 may be located on the side of the second rotating member 320 and the second fixing frame 350 near the flexible screen 30. This arrangement improves the compactness of the second support plate 310 within the second rotating shaft assembly 300, which is beneficial for achieving a thinner and lighter second rotating shaft assembly 300.

[0234] During the transition between the unfolded and folded states of the rotating mechanism 10, the first support plate 210 can slide relative to the first rotating member 220, thereby changing the relative position between the first support plate 210 and the first rotating member 220. The first support plate 210 can also rotate relative to the first fixed frame 250, thereby changing the relative position between the first support plate 210 and the first fixed frame 250. The second support plate 310 can slide relative to the second rotating member 320, thereby changing the relative position between the second support plate 310 and the second rotating member 320. The second support plate 310 can also rotate relative to the second fixed frame 350, thereby changing the relative position between the second support plate 310 and the second fixed frame 350.

[0235] Referring to Figure 29, when the rotating mechanism 10 is in the unfolded state, the first rotating shaft assembly 200, the main shaft 100 and the second rotating shaft assembly 300 together form the support plane S, including: the first support plate 210, the first fixing frame 250, the main shaft 100, the second support plate 310 and the second fixing frame 350 together form the support plane S.

[0236] In this assembly, the first support plate 210, the first fixing frame 250, and the first rotating member 220 together constitute at least a portion of the support surface of the first rotating shaft assembly 200, and the second support plate 310, the second fixing frame 350, and the second rotating member 320 constitute at least a portion of the support surface of the second rotating shaft assembly 300. For example, the first support plate 210 and a portion of the first fixing frame 250 can be stacked together along a third direction (Z), and the first support plate 210 can also be stacked together with a portion of the first rotating member 220 along a third direction (Z). Similarly, the second support plate 310 and a portion of the second fixing frame 350 can be stacked together along a third direction (Z), and the second support plate 310 can also be stacked together with a portion of the second rotating member 320 along a third direction (Z). This arrangement improves the support effect of the first rotating shaft assembly 200 and the second rotating shaft assembly 300 on the flexible screen 30.

[0237] Referring to Figure 30, when the rotating mechanism 10 is in the folded state, the minimum distance D2 between the support surfaces S1 and S2 of the first support plate along the second direction Y is greater than or equal to the distance D1 between the support surfaces of the first fixing frame 250 and the second fixing frame 350 along the second direction Y. For example, along the second direction Y, the distance between the end of the support surface S1 of the first support plate near the first fixing frame 250 and the end of the support surface S2 of the second support plate near the second fixing frame 350 can be the minimum distance D2. This arrangement helps to increase the accommodating space P for the flexible screen 30.

[0238] In some embodiments, when the rotating mechanism 10 is in a folded state, the distance D2 between the support surface S1 of the first support plate and the support surface S2 of the second support plate along the second direction Y gradually increases in the direction close to the main shaft 100. For example, in a direction parallel to the third direction Z and pointing towards the main shaft 100, the support surface S1 of the first support plate can be tilted in the opposite direction of the second direction Y, and the support surface S2 of the second support plate can be tilted in the second direction Y. The flexible screen 30 can be bent into a teardrop shape or a near-teardrop shape within the screen-accommodating space enclosed by the first fixing frame 250, the second fixing frame 350, the first support plate 210, the second support plate 310, the first rotating member 220, the second rotating member 320, and the main shaft 100. Through the above arrangement, excessive compression of the flexible screen 30 is avoided, thereby reducing the stress on the flexible screen 30 and improving its reliability.

[0239] In some embodiments, the first support plate 210 and the first rotating member 220 can be slidably connected by a first pin 229 and a first guide hole 211, wherein the extending direction of the first pin 229 is parallel to the first direction X. Specifically, the first support plate 210 includes the first guide hole 211, and the first rotating member 220 includes the first pin 229. Alternatively, the first support plate 210 includes the first pin 229, and the first rotating member 220 includes the first guide hole 211.

[0240] For example, the first pin 229 may pass through the first guide hole 211. With this configuration, when the first pin 229 moves along the extending direction of the first guide hole 211, the first support plate 210 and the first rotating member 220 slide relative to each other. Similarly, the second support plate 310 and the second rotating member 320 may be slidably connected by the second pin 329 and the second guide hole 311, with the extending direction of the second pin 329 parallel to the first direction X. The second support plate 310 includes the second guide hole 311, and the second rotating member 320 includes the second pin 329. Alternatively, the second support plate 310 may include the second pin 329, and the second rotating member 320 may include the second guide hole 311.

[0241] For example, the second pin 329 may pass through the second guide hole 311. With the above arrangement, when the second pin 329 moves along the extending direction of the second guide hole 311, the second support plate 310 and the second rotating member 320 slide relative to each other.

[0242] In some embodiments, the first pin 229 may be fixedly connected to the first rotating member 220, or the first pin 229 may also be rotatably connected to the first rotating member 220. Similarly, the second pin 329 may be fixedly connected to the second rotating member 320, or the second pin 329 may also be rotatably connected to the second rotating member 320.

[0243] Based on the above structure, referring to Figure 29, the distance between the first end 211a of the first guide hole and the main shaft 100 is less than the distance between the second end 211b of the first guide hole and the main shaft 100, and the distance between the first end 211a of the first guide hole and the support surface S1 of the first support plate is greater than the distance between the second end 211b of the first guide hole and the support surface S1 of the first support plate. For example, a protrusion is provided on the side of the first support plate 210 away from the flexible screen 30. The first guide hole 211 can penetrate the protrusion of the first support plate 210 along the first direction X. The first guide hole 211 can be a strip-shaped hole. In the second direction Y, the first guide hole 211 can be inclined away from the support surface S1 of the first support plate.

[0244] The distance between the first end 311a of the second guide hole and the main shaft 100 is less than the distance between the second end 311b of the second guide hole and the main shaft 100. The distance between the first end 311a of the second guide hole and the support surface S2 of the second support plate is greater than the distance between the second end 311b of the second guide hole and the support surface S2 of the second support plate. For example, a protrusion is provided on the side of the second support plate 310 away from the flexible screen 30. The second guide hole 311 can penetrate the protrusion of the second support plate 310 along the first direction X. The second guide hole 311 can be a strip hole. In the second direction Y, the second guide hole 311 can be inclined towards the support surface S2 of the second support plate.

[0245] Referring to Figures 29 and 30, during the transition of the rotating mechanism 10 from the unfolded state to the folded state, the first pin 229 moves relative to the first guide hole 211 in a direction from the first end 211a of the first guide hole to the second end 211b of the first guide hole, and the second pin 329 moves relative to the second guide hole 311 in a direction from the first end 311a of the second guide hole to the second end 311b of the second guide hole. This arrangement facilitates the situation where, when the rotating mechanism 10 is in the unfolded state, the first support plate 210 constitutes part of the support surface of the first rotating shaft assembly 200, and the second support plate 310 constitutes part of the support surface of the second rotating shaft assembly 300.

[0246] During the transition of the rotating mechanism 10 from the unfolded state to the folded state, the first pin 229 moves relative to the first guide hole 211 along the direction from the second end 211b of the first guide hole to the first end 211a of the first guide hole, and the second pin 329 moves relative to the second guide hole 311 along the direction from the second end 311b of the second guide hole to the first end 311a of the second guide hole. This arrangement facilitates the gradual increase in the distance between the support surfaces S1 and S2 of the first support plate along the second direction Y when the rotating mechanism 10 is in the folded state, closer to the main shaft 100. This allows the first rotating shaft assembly 200, the main shaft 100, and the second rotating shaft assembly 300 to jointly enclose a teardrop-shaped or approximately teardrop-shaped receiving space P.

[0247] In other embodiments, the first support plate 210 and the first rotating member 220 can also be slidably connected in other ways. For example, the first guide hole 211 can be configured as a guide groove, and the first support plate 210 and the first rotating member 220 can be slidably connected via the first pin 229 and the guide groove, wherein the guide groove can be linear. Alternatively, the first support plate 210 and the first rotating member 220 can be slidably connected via a virtual axis. Similarly, the second support plate 310 and the second rotating member 320 can also be slidably connected in other ways, and this application does not limit this connection.

[0248] In some embodiments, as shown in Figures 15 and 28, the first support plate 210 and the first fixing frame 250 can be rotatably connected by a third arc-shaped slider 212 and a third arc-shaped groove 253, wherein the first support plate 210 includes the third arc-shaped slider 212 and the first fixing frame 250 includes the third arc-shaped groove 253. Alternatively, the first support plate 210 includes the third arc-shaped groove 253 and the first fixing frame 250 includes the third arc-shaped slider 212.

[0249] For example, the groove wall of the third arc-shaped slide 253 can be an arc-shaped surface. The center line of the circle containing this arc-shaped surface can pass through the center of the circle and be perpendicular to the plane containing the circle. The extension direction of this center line can be parallel to the first direction X. The third arc-shaped slider 212 can be slidably connected to the third arc-shaped slide 253. Through the above arrangement, the first support plate 210 and the first fixed frame 250 can be rotatably connected through a virtual axis connection, which is beneficial to improving the assembly compactness of the first support plate 210 and the first fixed frame 250, and thus beneficial to reducing the size of the rotating mechanism 10. At the same time, the rotation axis of the first support plate 210 relative to the first fixed frame 250 can be parallel to the first direction X.

[0250] The second support plate 310 and the second fixing frame 350 are rotatably connected by a fourth arc-shaped slider 312 and a fourth arc-shaped groove 254, wherein the second support plate 310 includes the fourth arc-shaped slider 312 and the second fixing frame 350 includes the fourth arc-shaped groove 254. Alternatively, the second fixing frame 350 includes the fourth arc-shaped groove 254 and the second support plate 310 includes the fourth arc-shaped slider 312.

[0251] For example, the wall of the fourth arc-shaped groove 254 can be an arc-shaped surface. The center line of the circle containing this arc-shaped surface can pass through the center of the circle and be perpendicular to the plane containing the circle. The extension direction of this center line can be parallel to the first direction X. The fourth arc-shaped slider 312 can be slidably connected to the fourth arc-shaped groove 254. Through the above arrangement, the second support plate 310 and the second fixed frame 350 can be rotatably connected through a virtual axis connection, which is beneficial to improving the assembly compactness of the second support plate 310 and the second fixed frame 350, and thus beneficial to reducing the size of the rotating mechanism 10. At the same time, the rotation axis of the second support plate 310 relative to the second fixed frame 350 can be parallel to the first direction X.

[0252] Figure 31 is a structural diagram of a first swing arm 240 and a second swing arm 340 provided in an embodiment of this application. Referring to Figures 9, 15, and 31, in some embodiments, the first rotating shaft assembly 200 may further include a first swing arm 240. The first end 240a of the first swing arm is rotatably connected to the main shaft 100. The rotation axis of the first swing arm 240 relative to the main shaft 100 is parallel to the first direction X. The second end 240b of the first swing arm is slidably connected to the first fixed frame 250. The sliding direction of the first swing arm 240 relative to the first fixed frame 250 intersects the length extension direction of the first fixed frame 250 (i.e., the first direction X). The sliding direction of the first swing arm 240 relative to the first fixed frame 250 also intersects the first sliding direction F1.

[0253] For example, the first fixing frame 250 may include a third slide groove 255, the extension direction of which may be perpendicular to the extension direction of the first fixing frame 250, and the extension direction of the third slide groove 255 may also be parallel to the support surface of the first fixing frame 250. The second end 240b of the first swing arm may include a third slider 242, which is slidably connected to the third slide groove 255. With the above configuration, the first swing arm 240 can move relative to the first fixing frame 250, and the sliding direction of the first swing arm 240 relative to the first fixing frame 250 is perpendicular to the length extension direction of the first fixing frame 250.

[0254] Similarly, the second rotating shaft assembly 300 also includes a second swing arm 340. The first end 340a of the second swing arm is rotatably connected to the main shaft 100. The rotation axis of the second swing arm 340 relative to the main shaft 100 is parallel to the first direction X. The second end 340b of the second swing arm is slidably connected to the second fixed frame 350. The sliding direction of the second swing arm 340 relative to the second fixed frame 350 intersects the length extension direction of the second fixed frame 350 (i.e., the first direction X). The sliding direction of the second swing arm 340 relative to the second fixed frame 350 also intersects the second sliding direction F2.

[0255] For example, the second fixed frame 350 may include a fourth slide groove 256, the extension direction of which may be perpendicular to the extension direction of the second fixed frame 350, and the extension direction of the fourth slide groove 256 may also be parallel to the support surface of the second fixed frame 350. The second end 340b of the second swing arm may include a fourth slider 342, which is slidably connected to the fourth slide groove 256. With the above configuration, the second swing arm 340 can move relative to the second fixed frame 350, and the sliding direction of the second swing arm 340 relative to the second fixed frame 350 is perpendicular to the length extension direction of the second fixed frame 350.

[0256] Figure 32 is a cross-sectional view along the DD section line when the rotating mechanism 10 in Figure 5 is in the unfolded state; Figure 33 is a cross-sectional view along the DD section line when the rotating mechanism 10 in Figure 5 is in the folded state. Referring to Figures 32 and 33, and in conjunction with Figure 4, when the rotating mechanism 10 is in the unfolded state, the first swing arm 240, the first fixed frame 250, the first support plate 210, and the first rotating member 220 together constitute the support surface of the first rotating shaft assembly 200, and the second swing arm 340, the second fixed frame 350, the second support plate 310, and the second rotating member 320 together constitute the support surface of the second rotating shaft assembly 300. For example, the support surfaces of the first swing arm 240 and the first fixed frame 250 can be arranged along the first direction X, and the support surfaces of the second swing arm 340 and the second fixed frame 350 can be arranged along the first direction X. This arrangement improves the support effect of the rotating mechanism 10 on the flexible screen 30.

[0257] During the transition from the unfolded state to the folded state of the rotating mechanism 10, the first fixed frame 250 slides away from the main shaft 100 relative to the second end 240b of the first swing arm, and the second fixed frame 350 slides away from the main shaft 100 assembly relative to the second end 340b of the second swing arm. This arrangement facilitates adjustment of the length between the first fixed frame 250 and the second fixed frame 350. During the transition from the unfolded state to the folded state of the rotating mechanism 10, it helps ensure that the length of the flexible screen 30 remains unchanged, thus mitigating the squeezing or stretching effect of the rotating mechanism 10 on the flexible screen 30.

[0258] In some other embodiments, the first swing arm 240 can be slidably connected to the first support plate 210, and the second swing arm 340 can be slidably connected to the second support plate 310. For example, the first support plate 210 and the first swing arm 240 can be slidably connected via a rotating shaft and a slotted hole, the extension direction of the rotating shaft being parallel to the first direction X. The first support plate 210 may include a slotted hole, and the rotating shaft is also rotatably connected to the first swing arm 240. The rotating shaft passes through the slotted hole, and when the rotating shaft moves along the extension direction of the slotted hole, the first support plate 210 and the first swing arm 240 slide relative to each other. As another example, the first support plate 210 and the first swing arm 240 can be slidably connected via a rotating shaft and a guide groove, wherein the guide groove can be straight or curved. Yet another example, the first support plate 210 and the first swing arm 240 can be slidably connected via a virtual axis.

[0259] Similarly, the second support plate 310 and the second swing arm 340 can be slidably connected via a rotating shaft and a slotted hole. The extending direction of the rotating shaft is parallel to the first direction X. The second support plate 310 may include a slotted hole, and the rotating shaft is also rotatably connected to the second swing arm 340. The rotating shaft passes through the slotted hole, and when the rotating shaft moves along the extending direction of the slotted hole, the second support plate 310 and the second swing arm 340 slide relative to each other. Alternatively, the second support plate 310 and the second swing arm 340 can be slidably connected via a rotating shaft and a guide groove, wherein the guide groove can be straight or curved. Alternatively, the second support plate 310 and the second swing arm 340 can be slidably connected via a virtual axis.

[0260] Figure 34 is a structural diagram of a main outer shaft 110 according to an embodiment of this application. Referring to Figure 34, in some embodiments, the main shaft 100 may include a first mounting shaft 111, a second mounting shaft 112, a third mounting shaft 113, and a fourth mounting shaft 114 arranged sequentially along a second direction Y, wherein the first mounting shaft 111, the second mounting shaft 112, the third mounting shaft 113, and the fourth mounting shaft 114 all extend along a first direction X. The first end 240a of the first swing arm may be sleeved on the first mounting shaft 111 so that the first end 240a of the first swing arm can be rotatably connected to the main shaft 100, and the first end 340a of the second swing arm may be sleeved on the fourth mounting shaft 114 so that the first end 340a of the second swing arm can be rotatably connected to the main shaft 100.

[0261] Based on the above structure, the main shaft 100 may further include an elastic element 800 and a damping slider 700. The elastic element 800 may be disposed on the main shaft 100 along the first direction X, and the damping slider 700 may be slidably connected to the main shaft 100 along the first direction X. For example, the elastic element 800 may include springs, and the number of springs may be four, and the four springs may be respectively sleeved on the first mounting shaft 111, the second mounting shaft 112, the third mounting shaft 113, and the fourth mounting shaft 114.

[0262] The first mounting shaft 111, the second mounting shaft 112, the third mounting shaft 113, and the fourth mounting shaft 114 can all be slidably connected to the damping slider 700. There can be two damping sliders 700, and the two damping sliders 700 can be arranged along the first direction X. The first end of the elastic element 800 is connected to one damping slider 700, and the second end of the elastic element 800 is connected to the other damping slider 700. Alternatively, in some other embodiments, there can be only one damping slider 700, where the first end of the elastic element 800 can be connected to the main outer shaft, and the second end of the elastic element 800 can be connected to the damping slider 700.

[0263] As shown in Figure 7, the first swing arm 240 and the second swing arm 340 together constitute a swing arm assembly. In an embodiment where there are two damping sliders 700, the rotating mechanism 10 can have two swing arm assemblies, with one swing arm assembly located on the side of a damping slider 700 facing away from the first end of the elastic member, and the other swing arm assembly located on the side of a damping slider 700 facing away from the second end of the elastic member. The following description uses only one swing arm assembly and its corresponding damping slider 700 as an example.

[0264] Furthermore, as shown in Figure 31, the first end 240a of the first swing arm may include a first concave-convex surface 241, the damping slider 700 may include a second concave-convex surface 710 that cooperates with the first concave-convex surface 241, the first end 340a of the second swing arm may include a third concave-convex surface 341, and the damping slider 700 may include a fourth concave-convex surface 720 that cooperates with the third concave-convex surface 341.

[0265] For example, the first concave-convex surface 241 may be adjacent to the through hole of the first rocker arm 240, and in the direction surrounding the central axis of the through hole of the first rocker arm 240, the first concave-convex surface 241 may include alternating convex surfaces and concave surfaces. The second concave-convex surface 710 is adjacent to the through hole of the damping slider 700, and in the direction surrounding the central axis of the through hole of the damping slider 700, the second concave-convex surface 710 may include alternating convex surfaces and concave surfaces.

[0266] Similarly, the third concave-convex surface 341 may be adjacent to the through hole of the second swing arm 340, and in the direction surrounding the central axis of the through hole of the second swing arm 340, the third concave-convex surface 341 may include alternating convex and concave surfaces. The fourth concave-convex surface 720 is adjacent to the through hole of the damping slider 700, and in the direction surrounding the central axis of the second through hole 331 of the damping slider 700, the fourth concave-convex surface 720 may include alternating convex and concave surfaces.

[0267] When the rotating mechanism 10 rotates to the first position, the first swing arm 240 rotates relative to the main shaft 100 to the first position, and the second swing arm 340 rotates relative to the main shaft 100 to the first position: the elastic body is in a first compressed state. When the rotating mechanism 10 rotates to the second position, the first swing arm 240 rotates relative to the main shaft 100 to the second position, and the second swing arm 340 rotates relative to the main shaft 100 to the second position: the elastic body is in a second compressed state.

[0268] In some examples, as the rotating mechanism 10 rotates from the first position to the second position, the rotating mechanism 10 may be in a state transitioning from an unfolded state to a folded state. At this time, the length of the elastic member 800 in the first compressed state is greater than the length of the elastic member 800 in the second compressed state.

[0269] When the first swing arm 240 rotates relative to the main shaft 100 from the first position to the second position, the first swing arm 240 also rotates relative to the first mounting shaft 111. Since the first concave-convex surface 241 of the first swing arm 240 engages with the second concave-convex surface 710 of the damping slider 700, the first swing arm 240 drives the damping slider 700 to slide relative to the first mounting shaft 111 along the first direction X. The damping slider 700 drives the first spring to compress and deform. The elastic restoring force of the first spring acts as a damping force, thus providing a damping effect when the first swing arm 240 rotates relative to the main shaft 100.

[0270] Simultaneously, when the second swing arm 340 rotates relative to the main shaft 100 from the first position to the second position, the second swing arm 340 also rotates relative to the fourth mounting shaft 114. Since the third concave-convex surface 341 of the second swing arm 340 engages with the fourth concave-convex surface 720 of the damping slider 700, the second swing arm 340 drives the damping slider 700 to slide relative to the second rotating shaft 510 along the first direction X. The damping slider 700 drives the second spring to compress and deform. The elastic restoring force of the second spring acts as a damping force, thus providing a damping effect when the second swing arm 340 rotates relative to the main shaft 100.

[0271] In some embodiments, the first end 240a of the first swing arm may further include a first gear 243, and the main shaft 100 may further include a second gear 118 meshing with the first gear 243. The first end 340a of the second swing arm may further include a third gear 343, and the main shaft 100 may further include a fourth gear 119 meshing with the third gear 343. The second gear 118 also meshes with the fourth gear 119.

[0272] For example, the first gear 243, the second gear 118, the fourth gear 119 and the third gear 343 can be sequentially sleeved on the first mounting shaft 111, the second mounting shaft 112, the third mounting shaft 113 and the fourth mounting shaft 114, so that the first gear 243, the second gear 118, the fourth gear 119 and the third gear 343 are arranged sequentially along the second direction Y.

[0273] When the first swing arm 240 rotates relative to the main shaft 100, the first gear 243 drives the second gear 118 to rotate, which in turn drives the fourth gear 119 to rotate. The fourth gear 119 then drives the third gear 343 to rotate, causing the second swing arm 340 to rotate relative to the main shaft 100. Through this configuration, the first swing arm 240 rotates relative to the main shaft 100 while the second swing arm 340 rotates relative to the main shaft 100, thus achieving synchronous movement of the first and second swing arms 240.

[0274] Of course, in some other embodiments, the first swing arm 240 and the second swing arm 340 can also achieve synchronous movement through other structures, and this application embodiment does not specifically limit this.

[0275] For example, the main shaft 100 may further include a synchronizing slider, which is slidably connected to the main shaft 100 along a first direction X. The synchronizing slider may be located between two through holes at the first end 240a of the first swing arm and between two through holes at the first end 340a of the second swing arm. Furthermore, the synchronizing slider may also include a first helical surface, and the first swing arm 240 may also include a second helical surface that mates with the first helical surface. The synchronizing slider may also include a third helical surface, and the first swing arm 240 may also include a fourth helical surface that mates with the third helical surface.

[0276] With the above configuration, through the cooperation between the spiral surfaces, the first swing arm 240 can rotate relative to the main shaft 100 while the second swing arm 340 rotates relative to the main shaft 100, thereby achieving synchronous movement of the first swing arm 240 and the second swing arm 340.

[0277] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

A rotating mechanism, characterized in that, include: The main axis (100) extends along the first direction (X); The first rotating shaft assembly (200) includes a first rotating member (220), a first connecting rod (230), and a first fixed frame (250). The first end (220a) of the first rotating member is rotatably connected to the main shaft (100), and the second end (220b) of the first rotating member is slidably connected to the first fixed frame (250). The second end (220b) of the first rotating member can slide relative to the first fixed frame (250) along a first sliding direction (F1). The first end (230a) of the first connecting rod is rotatably connected to the first rotating member (220). The first link is rotatably connected to the first fixed frame (250). The rotation axis of the first link (230) relative to the first rotating member (220) is the first axis (L1), and the rotation axis of the first link (230) relative to the first fixed frame (250) is the second axis (L2). Both the first axis (L1) and the second axis (L2) intersect the first sliding direction (F1), and both the first axis (L1) and the second axis (L2) intersect the first direction (X). The second rotating shaft assembly (300) includes a second rotating member (320), a second connecting rod (330), and a second fixed frame (350). The first end (320a) of the second rotating member is rotatably connected to the main shaft (100), and the second end (320b) of the second rotating member is slidably connected to the second fixed frame (350). The second end (320b) of the second rotating member can slide relative to the second fixed frame (350) along a second sliding direction (F2). The first end (330a) of the second connecting rod is connected to the second rotating member (320). The second end (330b) of the second connecting rod is rotatably connected to the second fixed frame (350). The rotation axis of the second connecting rod (330) and the second rotating member (320) is the third axis (L3), and the rotation axis of the second connecting rod (330) and the second fixed frame (350) is the fourth axis (L4). The third axis (L3) and the fourth axis (L4) both intersect the second sliding direction (F2), and the third axis (L3) and the fourth axis (L4) both intersect the first direction (X). When the rotating mechanism (10) is in the unfolded state, the second end (220b) of the first rotating member, the first end (220a) of the first rotating member, the first end (320a) of the second rotating member, and the second end (320b) of the second rotating member are arranged sequentially along the second direction (Y). The first rotating shaft assembly (200), the main shaft (100), and the second rotating shaft assembly (300) together form a support plane (S). The first sliding direction (F1) and the second sliding direction (F2) both intersect the support plane (S). The second direction (Y) is perpendicular to the first direction (X). When the rotating mechanism (10) is in the folded state, the first rotating shaft assembly (200), the main shaft (100), and the second rotating shaft assembly (300) together constitute the accommodating space (P). The rotating mechanism according to claim 1 is characterized in that, The first axis (L1) has a first angle (K1) between its orthographic projection on the first reference plane and the second axis (L2) has a first angle (K1) between them. When the rotating mechanism (10) is in the unfolded state, the angle between the first sliding direction (F1) and the direction perpendicular to the support plane (S) is equal to the first angle (K1). The third axis (L3) has a second included angle (K2) between its orthographic projection on the first reference plane and the fourth axis (L4) has its orthographic projection on the first reference plane. When the rotating mechanism (10) is in the unfolded state, the angle between the second sliding direction (F2) and the direction perpendicular to the support plane (S) is equal to the second included angle (K2). The first reference plane is perpendicular to the first direction (X). The rotating mechanism according to claim 2 is characterized in that, When the rotating mechanism (10) is in the folded state, the angle between the first sliding direction (F1) and the second direction (Y) is equal to the first angle (K1); the angle between the second sliding direction (F2) and the second direction (Y) is equal to the second angle (K2). The rotating mechanism according to any one of claims 1-3 is characterized in that, The first end (230a) of the first connecting rod is rotatably connected to the first rotating member (220) through the first rotating shaft (410). When the rotating mechanism (10) is in the unfolded state, the extension direction of the first rotating shaft (410) is parallel to the support plane (S). The first end (330a) of the second connecting rod is rotatably connected to the second rotating member (320) via the second rotating shaft (510). When the rotating mechanism (10) is in the unfolded state, the extension direction of the second rotating shaft (510) is parallel to the support plane (S). The rotating mechanism according to claim 4 is characterized in that, The extension direction of the first rotating shaft (410) and the extension direction of the second rotating shaft (510) are both perpendicular to the first direction (X). The rotating mechanism according to any one of claims 1-5 is characterized in that, The second end (230b) of the first connecting rod is rotatably connected to the first fixed frame (250) via a third rotating shaft (420). When the rotating mechanism (10) is in the unfolded state, the extension direction of the third rotating shaft (420) intersects with the support plane (S). The second end (330b) of the second connecting rod is rotatably connected to the second fixed frame (350) via the fourth rotating shaft (520). When the rotating mechanism (10) is in the unfolded state, the extension direction of the fourth rotating shaft (520) intersects with the support plane (S). The rotating mechanism according to claim 6 is characterized in that, The distance between the first end (420a) of the third rotating shaft and the main shaft (100) is less than the distance between the second end (420b) of the third rotating shaft and the main shaft (100). When the rotating mechanism (10) is in the unfolded state, in the direction perpendicular to the support plane (S), the distance between the first end (420a) of the third rotating shaft and the support plane (S) is less than the distance between the second end (420b) of the third rotating shaft and the support plane (S). The distance between the first end (520a) of the fourth rotating shaft and the main shaft (100) is less than the distance between the second end (520b) of the fourth rotating shaft and the main shaft (100). When the rotating mechanism (10) is in the unfolded state, in the direction perpendicular to the support plane (S), the distance between the first end (520a) of the fourth rotating shaft and the support plane (S) is less than the distance between the second end (520b) of the fourth rotating shaft and the support plane (S). The rotating mechanism according to claim 7 is characterized in that, The first end (230a) of the first connecting rod is rotatably connected to the first rotating member (220) via a first rotating shaft (410), and the distance between the first end (410a) of the first rotating shaft and the main shaft (100) is less than the distance between the second end (410b) of the first rotating shaft and the main shaft (100); the first end (330a) of the second connecting rod is rotatably connected to the second rotating member (320) via a second rotating shaft (510), and the distance between the first end (510a) of the second rotating shaft and the main shaft (100) is less than the distance between the second end (510b) of the second rotating shaft and the main shaft (100); When the rotating mechanism (10) is in the unfolded state, the distance between the second end (410b) of the first rotating shaft and the supporting plane (S) is less than the distance between the second end (420b) of the third rotating shaft and the supporting plane (S), and the distance between the second end (510b) of the second rotating shaft and the supporting plane (S) is less than the distance between the second end (520b) of the fourth rotating shaft and the supporting plane (S). In the third direction, the distance between the orthographic projection of the second end (410b) of the first rotating shaft on the first reference plane and the distance between the orthographic projection of the second end (420b) of the third rotating shaft on the first reference plane is the first spacing, and the distance between the orthographic projection of the second end (510b) of the second rotating shaft on the first reference plane and the distance between the orthographic projection of the second end (520b) of the fourth rotating shaft on the first reference plane is the second spacing. During the transition of the rotating mechanism (10) from an unfolded state to a folded state, in the thickness direction of the first rotating shaft assembly (200), the distance between the orthographic projection of the second end (410b) of the first rotating shaft on the first reference surface and the orthographic projection of the second end (420b) of the third rotating shaft on the first reference surface is less than the first spacing; in the thickness direction of the second rotating shaft assembly (300), the distance between the orthographic projection of the second end (510b) of the second rotating shaft on the first reference surface and the orthographic projection of the second end (520b) of the fourth rotating shaft on the first reference surface is less than the second spacing. When the rotating mechanism (10) is in a folded state, in the second direction, the distance between the orthographic projection of the second end (410b) of the first rotating shaft on the first reference plane and the orthographic projection of the second end (420b) of the third rotating shaft on the first reference plane is a third spacing, and the distance between the orthographic projection of the second end (510b) of the second rotating shaft on the first reference plane and the orthographic projection of the second end (520b) of the fourth rotating shaft on the first reference plane is a fourth spacing. The third spacing is smaller than the first spacing, and the fourth spacing is smaller than the second spacing. Wherein, the first reference plane is perpendicular to the first direction, and the third direction is perpendicular to both the first direction and the second direction. The rotating mechanism according to any one of claims 6-8 is characterized in that, The extension direction of the third rotating shaft (420) and the extension direction of the fourth rotating shaft (520) are both perpendicular to the first direction (X). The rotating mechanism according to any one of claims 6-9 is characterized in that, The first end (230a) of the first connecting rod includes a first through hole (231), the first rotating shaft (410) is clearance-fitted with the first through hole (231), the distance between the first end (231a) of the first through hole and the main shaft (100) is less than the distance between the second end (231b) of the first through hole and the main shaft (100), and the size of the first end (231a) of the first through hole is less than the size of the second end (231b) of the first through hole; The second end (330b) of the second connecting rod includes a second through hole (331), the second rotating shaft (510) is clearance-fitted with the second through hole (331), the distance between the first end (331a) of the second through hole and the main shaft (100) is less than the distance between the second end (331b) of the second through hole and the main shaft (100), and the size of the first end (331a) of the second through hole is less than the size of the second end (331b) of the second through hole. The rotating mechanism according to claim 10 is characterized in that, The first through hole (231) includes a first hole wall (233) and a second hole wall (234). In the first direction (X), the distance between the first hole wall (233) and the third rotating shaft (420) is greater than the distance between the second hole wall (234) and the third rotating shaft (420). During the process of the rotating mechanism (10) changing from the unfolded state to the folded state, the first rotating shaft (410) moves relative to the first through hole (231) in the direction from the first hole wall (233) to the second hole wall (234). The second through hole (331) includes a third hole wall (333) and a fourth hole wall (334). In the first direction (X), the distance between the third hole wall (333) and the fourth rotating shaft (520) is greater than the distance between the fourth hole wall (334) and the fourth rotating shaft (520). During the process of the rotating mechanism (10) changing from the unfolded state to the folded state, the second rotating shaft (510) moves relative to the second through hole (331) in the direction from the third hole wall (333) to the fourth hole wall (334). The rotating mechanism according to any one of claims 1-11 is characterized in that, The third end (220c) and the fourth end (220d) of the first rotating member are arranged along the first direction (X). The orthographic projections of the third end (220c), the first end (230a) of the first connecting rod, and the second end (230b) of the first connecting rod on the second reference plane are arranged sequentially along the first direction (X). The fourth end (220d) of the first rotating member is rotatably connected to the first end (230a) of the first connecting rod. The third end (320c) and the fourth end (320d) of the second rotating member are arranged along the first direction (X). The orthographic projections of the third end (320c), the first end (330a), and the second end (330b) of the second connecting rod on the second reference plane are arranged sequentially along the first direction (X). The fourth end (320d) of the second rotating member is rotatably connected to the first end (330a) of the second connecting rod. The second reference plane is parallel to the support plane (S). The rotating mechanism according to any one of claims 1-12 is characterized in that, The second end (220b) of the first rotating member is slidably connected to the first fixed frame (250), including: the second end (220b) of the first rotating member and the first fixed frame (250) are slidably connected by a first slider (222) and a first groove (251), the second end (220b) of the first rotating member includes the first slider (222), the first fixed frame (250) includes the first groove (251), and the extending direction of the first groove (251) is parallel to the first sliding direction (F1); The second end (320b) of the second rotating member is slidably connected to the second fixed frame (350), including: the second end (320b) of the second rotating member and the second fixed frame (350) are slidably connected by the second slider (322) and the second slide groove (351), the second end (320b) of the second rotating member includes the second slider (322), the second fixed frame (350) includes the second slide groove (351), and the extending direction of the second slide groove (351) is parallel to the second sliding direction (F2). The rotating mechanism according to claim 13 is characterized in that, When the rotating mechanism (10) is in the unfolded state, in the second direction (Y), the distance between the first end (251a) of the first slide groove and the main shaft (100) is less than the distance between the second end (251b) of the first slide groove and the main shaft (100). In the direction perpendicular to the support plane (S), the distance between the first end (251a) of the first slide groove and the support plane (S) is greater than the distance between the second end (251b) of the first slide groove and the support plane (S). When the rotating mechanism (10) is in the unfolded state, in the second direction (Y), the distance between the first end (351a) of the second slide groove and the main shaft (100) is less than the distance between the second end (351b) of the second slide groove and the main shaft (100). In the direction perpendicular to the support plane (S), the distance between the first end (351a) of the second slide groove and the support plane (S) is greater than the distance between the second end (251b) of the first slide groove and the support plane (S). The rotating mechanism according to claim 14 is characterized in that, During the transition of the rotating mechanism (10) from the unfolded state to the folded state, the first slider (222) moves relative to the first slide groove (251) along the direction from the second end (251b) of the first slide groove to the first end (251a) of the first slide groove, and the second slider (322) moves relative to the second slide groove (351) along the direction from the second end (351b) of the second slide groove to the first end (351a) of the second slide groove; During the transition of the rotating mechanism (10) from the folded state to the unfolded state, the first slider (222) moves relative to the first slide groove (251) in the direction from the first end (251a) of the first slide groove to the second end (251b) of the first slide groove, and the second slider (322) moves relative to the second slide groove (351) in the direction from the first end (351a) of the second slide groove to the second end (351b) of the second slide groove. The rotating mechanism according to any one of claims 1-15 is characterized in that, The first rotating component (220) and the main shaft (100) are rotatably connected by a first arc-shaped slider (221) and a first arc-shaped groove (101), wherein the first rotating component (220) includes the first arc-shaped slider (221) and the main shaft (100) includes the first arc-shaped groove (101); or, the first rotating component (220) includes the first arc-shaped groove (101) and the main shaft (100) includes the first arc-shaped slider (221); The second rotating member (320) and the main shaft (100) are rotatably connected by a second arc-shaped slider (321) and a second arc-shaped groove (102), wherein the second rotating member (320) includes the second arc-shaped slider (321) and the main shaft (100) includes the second arc-shaped groove (102); or, the second rotating member (320) includes the second arc-shaped groove (102) and the main shaft (100) includes the second arc-shaped slider (321). The rotating mechanism according to any one of claims 1-16 is characterized in that, The first rotating shaft assembly (200) further includes a first support plate (210), the first support plate (210) and the first rotating member (220) are slidably connected, and the first support plate (210) is also rotatably connected to the first fixed frame (250). The second rotating shaft assembly (300) further includes a second support plate (310), the second support plate (310) and the second rotating member (320) are slidably connected, and the second support plate (310) is also rotatably connected to the second fixed frame (350). When the rotating mechanism (10) is in the unfolded state, the first rotating shaft assembly (200), the main shaft (100), and the second rotating shaft assembly (300) together form a support plane (S), including: the first support plate (210), the first fixing frame (250), the main shaft (100), the second support plate (310), and the second fixing frame (350) together form the support plane (S); When the rotating mechanism 10 is in the folded state, the minimum distance between the support surface (S1) of the first support plate and the support surface (S2) of the second support plate along the second direction (Y) is greater than or equal to the distance between the support surface of the first fixing frame (250) and the support surface of the second fixing frame (350) along the second direction (Y). The rotating mechanism according to claim 17 is characterized in that, When the rotating mechanism (10) is in a folded state, the distance between the support surface (S1) of the first support plate and the support surface (S2) of the second support plate gradually increases in the direction close to the main shaft (100) along the second direction (Y). The rotating mechanism according to claim 17 or 18 is characterized in that, When the rotating mechanism (10) is in the unfolded state, the first support plate (210) is located on the side of the first connecting rod (230) close to the support plane (S), and the second support plate (310) is located on the side of the second connecting rod (330) close to the support plane (S). The rotating mechanism according to any one of claims 17-19 is characterized in that, The first support plate (210) and the first rotating member (220) are slidably connected by a first pin (229) and a first guide hole (211), wherein the extending direction of the first pin (229) is parallel to the first direction (X); wherein the first rotating member (220) includes the first pin (229) and the first support plate (210) includes the first guide hole (211); or, the first support plate (210) includes the first pin (229) and the first rotating member (220) includes the first guide hole (211); The second support plate (310) and the second rotating member (320) are slidably connected by a second pin (329) and a second guide hole (311), wherein the extension direction of the second pin (329) is parallel to the first direction (X); wherein the second rotating member (320) includes the second pin (329) and the second support plate (310) includes the second guide hole (311); or, the second support plate (310) includes the second pin (329) and the second rotating member (320) includes the second guide hole (311). The rotating mechanism according to claim 20 is characterized in that, The distance between the first end (211a) of the first guide hole and the main shaft (100) is less than the distance between the second end (211b) of the first guide hole and the main shaft (100), and the distance between the first end (211a) of the first guide hole and the support surface (S1) of the first support plate is greater than the distance between the second end (211b) of the first guide hole and the support surface (S1) of the first support plate. The distance between the first end (311a) of the second guide hole and the main shaft (100) is less than the distance between the second end (311b) of the second guide hole and the main shaft (100), and the distance between the first end (311a) of the second guide hole and the support surface (S2) of the second support plate is greater than the distance between the second end (311b) of the second guide hole and the support surface (S2) of the second support plate. The rotating mechanism according to claim 21 is characterized in that, During the transition of the rotating mechanism (10) from the unfolded state to the folded state, the first pin (229) moves relative to the first guide hole (211) along the direction from the second end (211b) of the first guide hole to the first end (211a) of the first guide hole, and the second pin (329) moves relative to the second guide hole (311) along the direction from the second end (311b) of the second guide hole to the first end (311a) of the second guide hole; During the transition of the rotating mechanism (10) from the folded state to the unfolded state, the first pin (229) moves relative to the first guide hole (211) in the direction from the first end (211a) of the first guide hole to the second end (211b) of the first guide hole, and the second pin (329) moves relative to the second guide hole (311) in the direction from the first end (311a) of the second guide hole to the second end (311b) of the second guide hole. The rotating mechanism according to any one of claims 17-22 is characterized in that, The first support plate (210) and the first fixing frame (250) are rotatably connected by a third arc-shaped slider (212) and a third arc-shaped groove (253); wherein, the first support plate (210) includes a third arc-shaped slider (212) and the first fixing frame (250) includes a third arc-shaped groove (253); or, the first fixing frame (250) includes a third arc-shaped slider (212) and the first support plate (210) includes a third arc-shaped groove (253); The second support plate (310) and the second fixing frame (350) are rotatably connected by a fourth arc-shaped slider (312) and a fourth arc-shaped groove (254); wherein the second support plate (310) includes a fourth arc-shaped slider (312) and the second fixing frame (350) includes a fourth arc-shaped groove (254); or, the second fixing frame (350) includes a fourth arc-shaped slider (312) and the second support plate (310) includes a fourth arc-shaped groove (254). The rotating mechanism according to any one of claims 1-23 is characterized in that, The first rotating shaft assembly (200) further includes a first swing arm (240), the first end (240a) of the first swing arm is rotatably connected to the main shaft (100), the rotation axis of the first swing arm (240) relative to the main shaft (100) is parallel to the first direction (X), the second end (240b) of the first swing arm is slidably connected to the first fixed frame (250), the sliding direction of the first swing arm (240) relative to the first fixed frame (250) intersects the extension direction of the first fixed frame (250), and the sliding direction of the first swing arm (240) relative to the first fixed frame (250) also intersects the first sliding direction (F1); The second rotating shaft assembly (300) further includes a second swing arm (340), the first end (340a) of the second swing arm is rotatably connected to the main shaft (100), the rotation axis of the second swing arm (340) relative to the main shaft (100) is parallel to the first direction (X), the second end (340b) of the second swing arm is slidably connected to the second fixed frame (350), the sliding direction of the second swing arm (340) relative to the second fixed frame (350) intersects the extension direction of the second fixed frame (350), and the sliding direction of the second swing arm (340) relative to the second fixed frame (350) also intersects the second sliding direction (F2). A foldable electronic device, characterized in that, It includes a flexible screen (30), a first structural member (21), a second structural member (22), and a rotating mechanism (10) as described in any one of claims 1-24; The first structural member (21) and the second structural member (22) are connected to both sides of the rotating mechanism (10), and the flexible screen (30) is located on the same side of the first structural member (21) and the second structural member (22) and is connected to the first structural member (21) and the second structural member (22). When the foldable electronic device (1) is in the unfolded state, the support plane (S) of the rotating mechanism (10) is used to support the flexible screen (30); When the foldable electronic device (1) is in a folded state, the first rotating shaft assembly (200), the main shaft (100) and the second rotating shaft assembly (300) of the rotating mechanism (10) together constitute a receiving space (P), and part of the flexible screen (30) is located in the receiving space (P). The foldable electronic device according to claim 25 is characterized in that, The first end (230a) of the first connecting rod is rotatably connected to the first rotating member (220) via a first rotating shaft (410), and the first end (330a) of the second connecting rod is rotatably connected to the second rotating member (320) via a second rotating shaft (510). When the foldable electronic device (1) is in a folded state, the extension direction of the first rotating shaft (410) is parallel to the support surface of the first structural member (21), and the extension direction of the second rotating shaft (510) is parallel to the support surface of the second structural member (22). The foldable electronic device according to claim 26 is characterized in that, The distance between the first end (410a) of the first rotating shaft and the main shaft (100) is less than the distance between the second end (410b) of the first rotating shaft and the main shaft (100), and the distance between the first end (510a) of the second rotating shaft and the main shaft (100) is less than the distance between the second end (510b) of the second rotating shaft and the main shaft (100). The second end (230b) of the first connecting rod is rotatably connected to the first fixed frame (250) via a third rotating shaft (420). The distance between the first end (420a) of the third rotating shaft and the main shaft (100) is less than the distance between the second end (420b) of the third rotating shaft and the main shaft (100). The second end (330b) of the second connecting rod is rotatably connected to the second fixed frame (350) via a fourth rotating shaft (520). The distance between the first end (520a) of the fourth rotating shaft and the main shaft (100) is less than the distance between the second end (520b) of the fourth rotating shaft and the main shaft (100). When the foldable electronic device (1) is in the unfolded state, there is a first distance between the second end (410b) of the first rotating shaft and the plane where the support surface of the first structural member (21) is located. The first distance is less than the distance between the second end (420b) of the third rotating shaft and the plane where the support surface of the first structural member (21) is located. There is a second distance between the second end (510b) of the second rotating shaft and the plane where the support surface of the second structural member (22) is located. The second distance is less than the distance between the second end (520b) of the fourth rotating shaft and the plane where the support surface of the second structural member (22) is located. During the transition of the foldable electronic device (1) from the unfolded state to the folded state, the second end (410b) of the first rotating shaft moves relative to the first fixing frame (250) along the first sliding direction (F1), and the second end (510b) of the second rotating shaft moves relative to the second fixing frame (350) along the second sliding direction (F2). When the foldable electronic device (1) is in a folded state, the distance between the second end (410b) of the first rotating shaft and the plane where the support surface of the first structural member (21) is located is greater than the first distance, and the distance between the second end (510b) of the second rotating shaft and the plane where the support surface of the second structural member (22) is located is greater than the second distance. The foldable electronic device according to claim 27 is characterized in that, When the foldable electronic device (1) is in a folded state, The distance between the second end (410b) of the first rotating shaft and the plane containing the support surface of the first structural member (21) is less than or equal to the distance between the second end (420b) of the third rotating shaft and the plane containing the support surface of the second structural member (22). The distance between the second end (510b) of the second rotating shaft and the plane containing the support surface of the first structural member (21) is less than or equal to the distance between the second end (520b) of the fourth rotating shaft and the plane containing the support surface of the second structural member (22). The folding electronic device according to claim 27 or 28 is characterized in that, When the foldable electronic device (1) is in the unfolded state, there is a third distance between the first end (410a) of the first rotating shaft and the plane where the support surface of the first structural member (21) is located. The third distance is less than the distance between the first end (420a) of the third rotating shaft and the plane where the support surface of the first structural member (21) is located. There is a fourth distance between the first end (510a) of the second rotating shaft and the plane where the support surface of the second structural member (22) is located. The fourth distance is less than the distance between the first end (520a) of the fourth rotating shaft and the plane where the support surface of the second structural member (22) is located. During the transition of the foldable electronic device (1) from the unfolded state to the folded state, the first end (410a) of the first rotating shaft moves relative to the first fixed frame (250) along the first sliding direction (F1), and the first end (510a) of the second rotating shaft moves relative to the second fixed frame (350) along the second sliding direction (F2). When the foldable electronic device (1) is in a folded state, along the second direction (Y), the distance between the first end (410a) of the first rotating shaft and the plane where the support surface of the first structural member (21) is located is greater than the third distance, and the distance between the first end (510a) of the second rotating shaft and the plane where the support surface of the second structural member (22) is located is greater than the fourth distance. The foldable electronic device according to claim 29 is characterized in that, When the foldable electronic device (1) is in a folded state, The distance between the first end (410a) of the first rotating shaft and the plane where the support surface of the first structural member (21) is located is greater than the distance between the first end (420a) of the third rotating shaft and the plane where the support surface of the first structural member (21) is located. The distance between the first end (510a) of the second rotating shaft and the plane containing the support surface of the second structural member (22) is greater than the distance between the first end (520a) of the fourth rotating shaft and the plane containing the support surface of the second structural member (22).

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