Rotating mechanism and foldable electronic device

Abstract

A rotating mechanism (100) and a foldable electronic device (1000). The rotating mechanism (100) comprises mounting members (21), a support base (10), swing arms (41), bearing plates (51), and stop swing arms (61); the swing arms (41) are slidably and rotatably connected to the mounting members (21), and are rotatably connected to the support base (10); the bearing plates (51) are slidably and rotatably connected to the mounting members (21); one side of each stop swing arm (61) is movably connected to the corresponding mounting member (21) or the corresponding swing arm (41), and the other side of the stop swing arm (61) is movably connected to the corresponding bearing plate (51); each mounting member (21) is provided with a first abutting surface (263), and each swing arm (41) is provided with a second butting surface (463); each swing arm (61) is provided with a first stop surface (62) and a second stop surface (63); and when the rotating mechanism (100) is in a folded state, the first stop surfaces (62) are opposite to the first abutting surfaces (263), and the second stop surfaces (63) are opposite to the second butting surfaces (463). When the foldable electronic device (1000) is subjected to an impact force upon dropping in the folded state, the first abutting surfaces (263) abut against the first stop surfaces (62), and the second abutting surfaces (463) abut against the second stop surfaces (63), thereby preventing housings (1200) and the mounting members (21) from sliding downward relative to the support base (10), such that a display screen (1300) will not be compressed, thereby preventing failure of the display screen (1300).

Description

Rotating mechanism and foldable electronic device Technical Field

[0001] This application relates to the field of electronic product technology, and in particular to a rotating mechanism and a foldable electronic device. Background Technology

[0002] With the development of technology, various electronic devices have become indispensable products in daily life and production. Among them, foldable electronic devices have gradually become a development trend due to their advantages of larger display area and portability.

[0003] However, current foldable electronic devices are prone to display failure when subjected to impacts from drops, as the display is compressed. Summary of the Invention

[0004] This application provides a rotating mechanism and a foldable electronic device that can reduce or avoid pressure on the display screen when subjected to drop impact, thereby improving the reliability of the display screen.

[0005] This application provides a rotating mechanism, comprising: a mounting member, a support base, a swing arm, a bearing plate, and a stop swing arm. The swing arm is slidably and rotatably connected to the mounting member, and rotatably connected to the support base. The bearing plate is slidably and rotatably connected to the mounting member. One side of the stop swing arm is movably connected to the mounting member or the swing arm, and the other side of the stop swing arm is movably connected to the bearing plate. The movable connection refers to a rotatable connection, or, more specifically, a slidably and rotatably connected connection.

[0006] The mounting component has a first abutment surface, and the swing arm has a second abutment surface. The stop swing arm has a first stop surface and a second stop surface. The rotating mechanism includes an unfolded state and a folded state. When the rotating mechanism is in the folded state, the first stop surface and the first abutment surface are opposite each other, and the second stop surface and the second abutment surface are opposite each other.

[0007] It can be understood that there are two mounting components, namely the first mounting component and the second mounting component; there are two swing arms, namely the first swing arm and the second swing arm; there are two load-bearing plates, namely the first load-bearing plate and the second load-bearing plate; and there are two stop swing arms, namely the first stop swing arm and the second stop swing arm.

[0008] Along the width direction of the rotating mechanism, the first mounting member and the second mounting member are located on opposite sides of the support base. The first swing arm is slidably and rotatably connected to the first mounting member, and rotatably connected to the support base. The second swing arm is slidably and rotatably connected to the second mounting member, and rotatably connected to the support base. The first bearing plate is slidably and rotatably connected to the first mounting member, and the second bearing plate is slidably and rotatably connected to the second mounting member.

[0009] One side of the first stop arm is movably connected to the first mounting component or the first swing arm, and the other side of the first stop arm is movably connected to the first mounting component. One side of the second stop arm is movably connected to the second mounting component or the second swing arm, and the other side of the second stop arm is movably connected to the second mounting component.

[0010] Both the first and second mounting components have a first abutting surface, and both the first and second swing arms have a second abutting surface. The first stop swing arm has a first stop surface and a second stop surface, and the second stop swing arm also has a first stop surface and a second stop surface.

[0011] The rotating mechanism is used in a foldable electronic device, which includes two housings: a first housing and a second housing. A first mounting member is fixed to the first housing, and a second mounting member is fixed to the second housing. When the foldable electronic device switches between an unfolded state and a folded state, a first swing arm slides and rotates relative to the first mounting member and also rotates relative to a support base. A second swing arm slides and rotates relative to the second mounting member and also rotates relative to the support base. This allows the first housing and the second housing to be unfolded or folded relative to each other.

[0012] Foldable electronic devices typically include a display screen, which comprises a first display unit, a third display unit, and a second display unit connected in sequence. The first display unit is fixed to a first housing, the second display unit is fixed to a second housing, the third display unit is opposite to the rotating mechanism, and the third display unit is not fixed to the support base.

[0013] When the foldable electronic device switches between an unfolded and folded state, the display screen unfolds or folds accordingly. The first and second display units are fixed in place, preventing them from bending. The third display unit bends or unfolds as the foldable electronic device changes state. When the foldable electronic device is folded, the third display unit bends into a teardrop shape. If the support base is subjected to an external impact, the first and second housings will move a considerable distance towards the support base, causing both the first and second display units to move towards the third display unit. This results in wrinkles at the connection between the first and third display units, meaning the display screen is severely compressed and fails, ultimately leading to the failure of the entire display screen.

[0014] To address the aforementioned issues, this application includes a stop arm with a first stop surface and a second stop surface. A first abutment surface is provided on the mounting component, and a second abutment surface is provided on the swing arm. When the foldable electronic device switches between an unfolded state and a folded state, the swing arm rotates relative to the support base and slides and rotates relative to the mounting component. The stop arm moves relative to the mounting component or the swing arm, and also moves relative to the support plate. When the foldable electronic device rotates to the folded state, the first abutment surface and the first stop surface face each other, and the second abutment surface and the second stop surface face each other. The first abutment surface and the first stop surface facing each other means that, along the direction from the support base to the mounting component, the orthographic projection of the first stop surface on the mounting component is at least partially located on the first abutment surface. Furthermore, the first abutment surface and the first stop surface are in direct contact, or there is a gap between them. Similarly, "the second abutting surface and the second stop surface are opposite" means that, along the direction from the support base to the mounting member, at least a portion of the orthographic projection of the second stop surface on the swing arm lies on the second abutting surface. Furthermore, the second abutting surface and the second stop surface are in direct contact, or there is a gap between the second abutting surface and the second stop surface.

[0015] When the foldable electronic device is in a folded state, there is a gap between the first abutment surface and the first stop surface, and / or, there is a gap between the second abutment surface and the second stop surface. If the support base is subjected to an external impact, such as the foldable electronic device falling to the ground and the support base contacting the ground, the housing, stop arm, swing arm, and support base are arranged sequentially from top to bottom. The swing arm and support base are rotatably connected, and the swing arm is supported by the support base and will not slide downwards. However, if the swing arm slides and rotates to connect with the mounting component, the mounting component and housing will slide downwards. When the mounting component and housing slide downwards, the first abutment surface and the first stop surface abut, and the second abutment surface and the second stop surface abut.

[0016] It is understandable that when the foldable electronic device is in a folded state, the first abutment surface and the first stop surface are already in contact, and the second abutment surface and the second stop surface are also in contact. Therefore, when the support base is subjected to an external impact force, the mounting component and the housing will tend to move downwards. At this time, the first abutment surface and the first stop surface will abut against each other, generating a supporting force, and the second abutment surface and the second stop surface will abut against each other, also generating a supporting force. This helps to prevent the mounting component and the housing from moving downwards.

[0017] When the first abutting surface and the first stop surface abut together, and the second abutting surface and the second stop surface abut together, the relative positions of the housing, the swing arm, and the support base are fixed. That is, the housing and the mounting parts stop sliding downwards, so the display screen will not be squeezed, thereby preventing the display screen from malfunctioning.

[0018] In some embodiments, the mounting member has a first notch, and a first abutting surface includes the inner wall surface of the first notch. The swing arm has a second notch, and a second abutting surface includes the inner wall surface of the second notch. A first stop surface and a second stop surface are located on opposite sides of the stop swing arm.

[0019] When the rotating mechanism is in the folded state, the openings of the first notch and the second notch are opposite each other. The first abutment surface and the second abutment surface are spaced apart and opposite each other. At least a portion of the stop arm is located within the first notch and the second notch, and at least a portion of the stop arm is located between the first abutment surface and the second abutment surface, such that the first stop surface and the first abutment surface are opposite each other, and the second stop surface and the second abutment surface are opposite each other.

[0020] By setting a first notch and a second notch, and setting the inner wall surface of the first notch as the first abutting surface and the inner wall surface of the second notch as the second abutting surface, the structural compactness of the rotating mechanism can be increased.

[0021] In some embodiments, the stop arm includes a stop body, a first connecting rod, and a second connecting rod. The first connecting rod and the second connecting rod are spaced apart from each other on the stop body. The first connecting rod is movably connected to a mounting component or a swing arm, and the second connecting rod is movably connected to a bearing plate. The first stop surface and the second stop surface are located on opposite sides of the stop body.

[0022] The stop body is used to set the first stop surface and the second stop surface, and the first connecting rod and the second connecting rod are used to connect the stop arm to other components. This allows the stop arm to perform its supporting function while maintaining a simple structure, being easy to manufacture, and facilitating the connection of the stop arm to other components.

[0023] In some embodiments, the entire stop body is located between the first and second abutment surfaces, that is, the entire stop body is located within the first and second notches. In this case, the center of gravity of the stop arm is located between the first and second abutment surfaces. When the foldable electronic device is dropped, the stop arm can be prevented from tilting towards the display screen, preventing the stop arm and swing arm from detaching and causing failure of support for the mounting component.

[0024] In some embodiments, the stop arm further includes a first extension fixed to a first stop surface, and a first connecting rod connected to the side of the first extension away from the first stop surface. Along the thickness direction of the rotating mechanism, a support plate is stacked on the mounting member. The mounting member has a mounting groove on the side opposite to the support plate. The mounting groove communicates with a first notch. The first extension extends into the mounting groove, and the first connecting rod is movably connected to the mounting groove. That is, the stop arm and the mounting member are movably connected. When the foldable electronic device switches between an unfolded state and a folded state, the movement of the mounting member can drive the stop arm to move, thereby enabling the stop arm to support the housing while preventing it from affecting the normal operation of the rotating mechanism.

[0025] By providing a first extension, the first connecting rod can extend into the mounting groove, facilitating the connection between the stop arm and the mounting component. The mounting groove and the first notch can be connected via a connecting groove. The first extension passes through the connecting groove, allowing the first connecting rod to extend into the mounting groove.

[0026] In some embodiments, a first connecting rod is rotatably connected to a mounting slot, and a second connecting rod is slidably and rotatably connected to a support plate. The inner wall of the mounting slot is concave, allowing the first connecting rod to rotate along its inner wall. When the foldable electronic device switches between a folded and unfolded state, the first connecting rod rotates only within the mounting slot, changing the angle between the stop arm and the mounting component, without any relative displacement between them. The second connecting rod slides and rotates relative to the support plate, also changing the angle between the stop arm and the support plate, and simultaneously causing relative displacement between them. This allows the stop arm to move with the unfolding and folding of the rotating mechanism, preventing it from interfering with the normal operation of the mechanism.

[0027] In some embodiments, the first stop surface includes a concave arc-shaped surface, and the first abutting surface includes a convex arc-shaped surface. When the rotating mechanism switches between the unfolded state and the folded state, the first connecting rod rotates along the inner wall of the mounting groove, and the concave arc-shaped surface moves along the convex arc-shaped surface. Since the first connecting rod only rotates within the mounting groove, there is no relative displacement between the stop arm and the mounting component. Utilizing this feature, by setting the concave arc-shaped surface to move along the convex arc-shaped surface during the movement of the stop arm, the smoothness of the stop arm's movement can be increased, and the stop arm can be limited to prevent it from becoming loose.

[0028] In some embodiments, the first connecting rod slidably and rotatably connects to the mounting groove, and the second connecting rod rotatably connects to the support plate. The inner wall of the mounting groove is arc-shaped, and the extension length of the mounting groove is greater than the outer diameter of the first connecting rod, thereby allowing the first connecting rod to slide and rotate within the mounting groove, achieving a movable connection between the stop arm and the mounting component. When the foldable electronic device switches between a folded state and an unfolded state, the stop arm rotates relative to the mounting component and also generates relative displacement with the mounting component. The second connecting rod only rotates relative to the support plate, and the stop arm and the support plate do not generate relative displacement. This allows the stop arm to move with the unfolding and folding of the rotating mechanism, avoiding interference with the normal operation of the rotating mechanism.

[0029] In some embodiments, the stop arm further includes a first extension fixed to the second stop surface, and a first connecting rod connected to the side of the first extension away from the second stop surface. Along the thickness direction of the rotating mechanism, a support plate is stacked on the mounting member, and a portion of the swing arm is located between the support plate and the mounting member. A mounting groove is provided on the side of the swing arm away from the support plate. The mounting groove communicates with a second notch. The first extension extends into the mounting groove, and the first connecting rod is rotatably connected to the mounting groove.

[0030] That is, the stop arm and the swing arm are movably connected. When the foldable electronic device switches between the unfolded state and the folded state, the swing arm moves, which can drive the stop arm to move. In this way, the stop arm can support the housing and prevent the stop arm from affecting the normal operation of the rotating mechanism.

[0031] By providing a first extension, the first connecting rod can extend into the mounting groove, facilitating the connection between the stop arm and the swing arm. The mounting groove and the first notch can be connected via a connecting groove. The first extension passes through the connecting groove, allowing the first connecting rod to extend into the mounting groove.

[0032] In some embodiments, the second stop surface includes a concave arc-shaped surface, and the second abutment surface includes a convex arc-shaped surface. When the rotating mechanism switches between the unfolded and folded states, the first connecting rod rotates along the inner wall of the mounting groove, and the concave arc-shaped surface moves along the convex arc-shaped surface. Because the first connecting rod only rotates within the mounting groove, there is no relative displacement between the stop arm and the mounting component. Utilizing this feature, by setting the concave arc-shaped surface to move along the convex arc-shaped surface during the movement of the stop arm, the smoothness of the stop arm's movement can be increased.

[0033] In some embodiments, the stop body further includes a first surface connected between a first stop surface and a second stop surface, and a second extension protrudes from the first surface. A second connecting rod is connected to the second extension.

[0034] Along the thickness direction of the rotating mechanism, a support plate is stacked on the mounting component. A first protrusion with a connecting hole is provided on the side of the support plate facing the mounting component. A second extension is located on the side of the stop body facing the support plate, and a second connecting rod is movably connected to the connecting hole.

[0035] By setting a second extension and a first protrusion, and connecting the second connecting rod to the second extension and the first protrusion respectively, a movable connection between the stop arm and the support plate can be achieved, making the structure of the rotating mechanism more compact. When the foldable electronic device switches between the unfolded and folded states, the movement of the support plate can drive the movement of the stop arm, thus enabling the stop arm to support the housing while preventing it from affecting the normal operation of the rotating mechanism.

[0036] In some embodiments, a first connecting rod is rotatably connected to a mounting component or a swing arm. The first connecting rod allows the stop swing arm to rotate relative to the mounting component or swing arm. A second connecting rod is slidably and rotatably connected to a connecting hole. The connecting hole can be an oblong hole, allowing the second connecting rod to slide and rotate within it when the foldable electronic device switches between an unfolded and folded state. That is, while the stop swing arm can rotate relative to the support plate, it also generates relative displacement with the support plate. This ensures that the stop swing arm moves with the unfolding and folding of the rotating mechanism, preventing the stop swing arm from interfering with the normal operation of the rotating mechanism.

[0037] In some embodiments, a first connecting rod is slidably and rotatably connected to the mounting component, allowing the stop arm to slide and rotate relative to the mounting component. A second connecting rod is rotatably connected to the connecting hole. This allows the stop arm to move with the unfolding and folding of the rotating mechanism, preventing the stop arm from interfering with the normal operation of the rotating mechanism.

[0038] In some embodiments, there are two second extensions, spaced apart. Both ends of the second connecting rod are connected to the second extensions, and a portion of the second connecting rod is located within the gap between the two second extensions. A first protrusion extends into the gap between the two second extensions, and the portion of the second connecting rod located between the two second extensions is movably connected to the connecting hole. This ensures a reliable connection between the support plate and the stop arm, resulting in smoother operation of the stop arm.

[0039] In some embodiments, the stop body also has a clearance notch, which communicates with the gap between the two second extensions. The first protrusion extends into the clearance notch. This can increase the compactness of the rotating mechanism.

[0040] In some embodiments, the mounting component has a first support surface facing the first notch. The swing arm has a support groove, a portion of the inner wall of the support groove forming a second support surface. The first protrusion has a first limiting surface, and the bearing plate has a second limiting surface. When the rotating mechanism is in a folded state, the first notch and the support groove are connected, and the first and second support surfaces are spaced apart and opposite to each other. The first protrusion extends into the first notch, and the bearing plate extends into the support groove. The first support surface and the first limiting surface are opposite to each other, and the second support surface and the second limiting surface are opposite to each other.

[0041] When the foldable electronic device is in a folded state and the support base is subjected to an external impact, the housing, mounting components, and carrier plate will slide downwards relative to the swing arm. As the mounting components and carrier plate slide downwards, the first limiting surface gradually abuts against the first support surface, and the second limiting surface gradually abuts against the second support surface. After the first limiting surface and the first support surface abut, and the second limiting surface and the second support surface abut, the housing, mounting components, and carrier plate all stop sliding downwards, and the housing, mounting components, carrier plate, swing arm, and support base are relatively fixed. This prevents the housing from moving downwards, thereby avoiding the display screen being squeezed and further reducing the risk of display screen failure.

[0042] In some embodiments, the rotating mechanism further includes a main swing arm, which is rotatably connected to a mounting component and slidably and rotatably connected to a support base. A bearing plate is slidably and rotatably connected to the main swing arm.

[0043] In some embodiments, the rotating mechanism further includes a synchronizing gear, a first swing arm with a first driving tooth, and a second swing arm with a second driving tooth. The first driving tooth, the synchronizing gear, and the second driving tooth mesh sequentially. When the foldable electronic device switches between a folded state and an unfolded state, the first driving tooth, the synchronizing gear, and the second driving tooth mesh and drive each other, causing the first swing arm and the second swing arm to rotate synchronously, thereby achieving synchronous rotation of the first housing and the second housing.

[0044] In some embodiments, the swing arm is rotatably connected to a mounting shaft and a support base. The rotating mechanism also includes a first concave cam, a second concave cam, a main elastic element, and a pushing element. The first concave cam has a first mating protrusion and concave portion, and the second concave cam has a second mating protrusion and concave portion. The swing arm has a first concave and concave portion and a second concave and concave portion. The first concave cam, the second concave cam, and the main elastic element are all sleeved on the mounting shaft. Along the length direction of the mounting shaft, the pushing element, the main elastic element, the first concave cam, the swing arm, and the second concave cam are arranged sequentially. The first concave and concave portion mates with the first mating protrusion and concave portion, and the second concave and concave portion mates with the second mating protrusion and concave portion.

[0045] When the foldable electronic device switches between a folded state and an unfolded state, the engagement state of the first concave-convex part and the first mating concave-convex part changes with the movement of the swing arm, and the engagement state of the second concave-convex part and the second mating concave-convex part changes, causing the main elastic element to be compressed or stretched, thereby providing damping force for the first housing and the second housing.

[0046] In some embodiments, when the rotating mechanism is in a folded state, the orthographic projection of the first abutment surface onto the reference surface completely covers the orthographic projection of the first stop surface onto the reference surface. Complete coverage includes two cases: First, the areas and shapes of the orthographic projections of the first abutment surface and the first stop surface onto the reference surface are the same and completely overlap. Second, the area of ​​the orthographic projection of the first abutment surface onto the reference surface is larger than the area of ​​the orthographic projection of the first stop surface onto the reference surface, and the orthographic projection of the first stop surface is completely covered by the orthographic projection of the first abutment surface.

[0047] And / or,

[0048] The orthographic projection of the second abutment surface onto the reference surface completely covers the orthographic projection of the second stop surface onto the reference surface. Complete coverage includes two cases: First, the areas and shapes of the orthographic projections of the second abutment surface and the second stop surface onto the reference surface are identical and completely overlap. Second, the area of ​​the orthographic projection of the second abutment surface onto the reference surface is larger than the area of ​​the orthographic projection of the second stop surface onto the reference surface, and the orthographic projection of the second stop surface is completely obscured by the orthographic projection of the second abutment surface. The reference surface is perpendicular to the direction from the support base to the mounting component.

[0049] Therefore, when the support base is subjected to external impact, the contact area between the first stop surface and the first abutment surface is relatively large. This ensures that the stop arm and the mounting component are subjected to balanced forces, thus preventing damage to the stop arm and the mounting component. Similarly, the large contact area between the second stop surface and the second abutment surface ensures that the stop arm and the swing arm are subjected to balanced forces, further preventing damage to the stop arm and the swing arm. This increases the stability of the supported housing, prevents it from sliding downwards, and further reduces the risk of the display screen being squeezed. Furthermore, this structural design allows the stop arm to be positioned entirely between the first and second abutment surfaces, resulting in a smaller stop arm size and increased structural compactness of the rotating mechanism.

[0050] In some embodiments, the center planes of the first stop surface and the first abutment surface coincide. Here, the center plane is perpendicular to the aforementioned reference plane. This increases the structural compactness of the rotating mechanism and further enhances the stability of the contact between the mounting component and the stop arm, thereby improving the stability of the stop arm supporting the mounting component.

[0051] In some embodiments, the center planes of the second stop surface and the second abutment surface coincide. Here, the center plane is perpendicular to the aforementioned reference plane. This increases the structural compactness of the rotating mechanism and further enhances the stability of the contact between the stop arm and the swing arm, improving the support effect of the swing arm on the stop arm, thereby increasing the stability of the stop arm support mounting component.

[0052] In some embodiments, when the rotating mechanism is in a folded state, the center of gravity of the stop arm is located between the first and second abutment surfaces. When the support base is subjected to external impact, the force between the stop arm and the swing arm includes the contact force between them and the weight of the stop arm. If the center of gravity of the stop arm is not located between the first and second abutment surfaces, the stop arm may tilt relative to the swing arm, resulting in decreased stability of the stop arm and consequently, decreased stability of the housing. Conversely, when the center of gravity of the stop arm is located between the first and second abutment surfaces, the stop arm is very stable, thereby enhancing the stability of the housing.

[0053] In some embodiments, the center planes of the first abutment surface, the second abutment surface, the first stop surface, and the second stop surface coincide, and the center of gravity of the stop arm is located on the center plane. This can further increase the stability of the housing.

[0054] The second aspect of this application provides a foldable electronic device, including a flexible screen and a rotation mechanism according to any one of the first aspects of this application, wherein the flexible screen is located on one side of the rotation mechanism.

[0055] In some embodiments, the foldable electronic device further includes two housings, with a rotating mechanism disposed between the two housings and connected to both housings respectively. The first housing and the second housing can rotate relative to each other via the rotating mechanism. Attached Figure Description

[0056] Figure 1 is a schematic diagram of the foldable electronic device provided in the embodiment of this application in a folded state.

[0057] Figure 2 is a schematic diagram of the unfolded state of the foldable electronic device provided in the embodiment of this application.

[0058] Figure 3 is a schematic diagram of the main body of the foldable electronic device provided in an embodiment of this application.

[0059] Figure 4 is a partial structural schematic diagram of the foldable electronic device provided in an embodiment of this application.

[0060] Figure 5 is another partial structural schematic diagram of the foldable electronic device provided in the embodiment of this application.

[0061] Figure 6 is a schematic diagram of the split structure of the rotating mechanism provided in the first embodiment of this application.

[0062] Figure 7 is a schematic diagram of the rotating mechanism provided in the first embodiment of this application.

[0063] Figure 8 is a schematic diagram of the support base of the rotating mechanism shown in Figure 6.

[0064] Figure 9 is a schematic diagram of the mounting assembly of the rotating mechanism shown in Figure 6.

[0065] Figure 10 is a structural schematic diagram of the mounting components shown in Figure 9 from another perspective.

[0066] Figure 11 is a schematic diagram of the structure of the first swing arm assembly of the rotating mechanism shown in Figure 6.

[0067] Figure 12 is a schematic diagram of the second swing arm assembly of the rotating mechanism shown in Figure 6.

[0068] Figure 13 is a schematic diagram of the load-bearing component of the rotating mechanism shown in Figure 6.

[0069] Figure 14 is a structural schematic diagram of the load-bearing component shown in Figure 13 from another perspective.

[0070] Figure 15 is a schematic diagram of the stop assembly of the rotating mechanism shown in Figure 6.

[0071] Figure 16 is a structural schematic diagram of the stop assembly shown in Figure 15 from another perspective.

[0072] Figure 17 is a schematic diagram of the rotating mechanism provided in the first embodiment of this application in an unfolded state.

[0073] Figure 18 is a partial structural schematic diagram of the rotating mechanism shown in Figure 17.

[0074] Figure 19 is a schematic diagram of the BB-direction cross-section of Figure 17.

[0075] Figure 20 is a schematic diagram of the CC-direction cross-sectional structure of Figure 17.

[0076] Figure 21 is a partial structural schematic diagram of the mounting parts and the stop arm assembly of the rotating mechanism shown in Figure 18.

[0077] Figure 22 is a structural schematic diagram of the stop arm and mounting assembly shown in Figure 21 from another perspective.

[0078] Figure 23 is a schematic diagram of the EE-directed cross-sectional structure of Figure 17.

[0079] Figure 24 is a schematic diagram of the cross-sectional structure in the FF direction of Figure 17.

[0080] Figure 25 is a schematic diagram of the rotating mechanism provided in the first embodiment of this application in a semi-expanded state.

[0081] Figure 26 is a partial structural schematic diagram of the rotating mechanism shown in Figure 25.

[0082] Figure 27 is a schematic diagram of the DD-direction cross-sectional structure of Figure 25.

[0083] Figure 28 is a schematic diagram of the process of switching the rotating mechanism from the unfolded state to the folded state provided in the first embodiment of this application.

[0084] Figure 29 is a schematic diagram of the rotating mechanism provided in the first embodiment of this application in a folded state.

[0085] Figure 30 is a schematic diagram of the MM-direction cross-sectional structure of Figure 29.

[0086] Figure 31 is a schematic diagram of the NN-direction cross-sectional structure of Figure 29.

[0087] Figure 32 is a diagram showing the state changes of the rotating mechanism provided in the first embodiment of this application when it is in a folded state and subjected to an external impact force.

[0088] Figure 33 is a simplified schematic diagram showing the projection relationship of the first abutting surface, the second abutting surface, the first stop surface, and the second stop surface provided in the first embodiment of this application.

[0089] Figure 34 shows the state changes of a foldable electronic device in the related technology when it is in a folded state and subjected to an external impact force.

[0090] Figure 35 shows the state changes of a foldable electronic device in another related technology when it is in a folded state and subjected to an external impact force.

[0091] Figure 36 is another perspective of the MM-direction cross-sectional view of Figure 29.

[0092] Figure 37 is another state change diagram of the rotating mechanism provided in the first embodiment of this application when it is in a folded state and subjected to external impact force.

[0093] Figure 38 is a partial structural schematic diagram of the rotating mechanism shown in Figure 18.

[0094] Figure 39 is a schematic diagram of the mounting assembly of the rotating mechanism provided in the second embodiment of this application.

[0095] Figure 40 is a structural schematic diagram of the mounting components shown in Figure 39 from another perspective.

[0096] Figure 41 is a structural schematic diagram of the bearing component of the rotating mechanism provided in the second embodiment of this application.

[0097] Figure 42 is a schematic diagram of the stop assembly provided in the second embodiment of this application.

[0098] Figure 43 is a structural schematic diagram of the stop assembly shown in Figure 42 from another perspective.

[0099] Figure 44 is a cross-sectional view of the rotating mechanism provided in the second embodiment of this application when it is in the unfolded state.

[0100] Figure 45 is another cross-sectional view of the rotating mechanism provided in the second embodiment of this application when it is in the unfolded state.

[0101] Figure 46 is a schematic diagram of the process of switching the rotating mechanism from the unfolded state to the folded state according to the second embodiment of this application.

[0102] Figure 47 is a schematic diagram of the rotating mechanism provided in the second embodiment of this application in a folded state.

[0103] Figure 48 is a cross-sectional view of the rotating mechanism in a folded state according to the second embodiment of this application.

[0104] Figure 49 is another perspective of the cross-sectional structural schematic diagram of the rotating mechanism shown in Figure 48.

[0105] Figure 50 is a diagram showing the state changes of the rotating mechanism provided in the second embodiment of this application when it is in a folded state and subjected to an external impact force.

[0106] Figure 51 is another cross-sectional view of the rotating mechanism provided in the second embodiment of this application in a folded state.

[0107] Figure 52 is a schematic diagram of the mounting assembly of the rotating mechanism provided in the third embodiment of this application.

[0108] Figure 53 is a structural schematic diagram of the mounting components shown in Figure 39 from another perspective.

[0109] Figure 54 is a structural schematic diagram of the bearing component of the rotating mechanism provided in the third embodiment of this application.

[0110] Figure 55 is a structural schematic diagram of the second swing arm assembly of the rotating mechanism provided in the third embodiment of this application.

[0111] Figure 56 is a structural schematic diagram of the second swing arm assembly shown in Figure 55 from another perspective.

[0112] Figure 57 is a schematic diagram of the stop assembly provided in the third embodiment of this application.

[0113] Figure 58 is a structural schematic diagram of the stop assembly shown in Figure 57 from another perspective.

[0114] Figure 59 is a cross-sectional view of the rotating mechanism provided in the third embodiment of this application when it is in the unfolded state.

[0115] Figure 60 is another cross-sectional view of the rotating mechanism provided in the third embodiment of this application when it is in the unfolded state.

[0116] Figure 61 is a schematic diagram of the process of switching the rotation mechanism from the unfolded state to the folded state according to the third embodiment of this application.

[0117] Figure 62 is a cross-sectional view of the rotating mechanism provided in the third embodiment of this application in a semi-expanded state.

[0118] Figure 63 is a schematic diagram of the rotating mechanism in a folded state provided in the third embodiment of this application.

[0119] Figure 64 is a cross-sectional view of the rotating mechanism provided in the third embodiment of this application in a folded state.

[0120] Figure 65 is another perspective of the cross-sectional structural schematic diagram of the rotating mechanism shown in Figure 64.

[0121] Figure 66 is a diagram showing the state changes of the rotating mechanism provided in the third embodiment of this application when it is in a folded state and subjected to an external impact force.

[0122] Figure 67 is another cross-sectional view of the rotating mechanism provided in the third embodiment of this application in a folded state.

[0123] Figure 68 is another perspective of the cross-sectional structural schematic diagram of the rotating mechanism shown in Figure 67.

[0124] Explanation of reference numerals: 1000 - Foldable electronic device; 1100 - Main body; 1200 - Housing; 1210 - First housing; 1211 - First receiving cavity; 1220 - Second housing; 1221 - Second receiving cavity; 1300 - Display screen; 1310 - First display unit; 1320 - Second display unit; 1330 - Third display unit; 100 - Rotation mechanism; 10 - Support base; 11 - Shaft cover; 12 - Support plate; 13 - Receiving groove; 14 - Convex arc-shaped surface; 15 - Main sliding groove; 16 - Secondary rotating groove; 17 - First mounting shaft; 18 - Second mounting shaft; 20 - Mounting assembly; 21 - Mounting piece; 210 - Second groove; 21a - First mounting piece; 21b - Second mounting piece 22-Main rotating groove, 221-Main rotating block, 222-Main rotating hole, 23-Secondary sliding groove, 231-Anti-detachment protrusion, 24-First guide slide, 25-First notch, 26-Connecting protrusion, 261-Connecting top surface, 262-Connecting bottom surface, 263-First abutting surface, 264-Connecting side surface, 27-Connecting groove, 271-First supporting surface, 28-Mounting groove, 281-Arc-shaped surface, 282-Groove circumference, 29-Supporting inclined surface, 30-First swing arm assembly, 31-Main swing arm, 31a-First main swing arm, 31b-Second main swing arm, 32-Main rotating part, 33-Main sliding part, 34-Main rotating shaft, 35-Second guide slide, 40-Second swing arm assembly, 41-Swing arm, 41 0-First groove, 41a-First swing arm, 41b-Second swing arm, 42-Secondary rotating part, 43-Secondary sliding part, 44-First rotating part, 441-First concave-convex part, 442-First driving tooth, 443-Second driving tooth, 45-Second rotating part, 451-Second concave-convex part, 46-Second notch, 461-First groove side surface, 462-Second groove side surface, 463-Second abutting surface, 47-Support groove, 48-Second support surface, 50-Bearing assembly, 51-Bearing plate, 510-Second limiting surface, 520-Protrusion, 51a-First bearing plate, 51b-Second bearing plate, 52-First protrusion, 521-First limiting surface, 53-Second protrusion, 54-Third protrusion, 55 56-Receiving groove, 57-Connecting hole, 58-First guide groove, 59-Second guide groove, 60-Stop assembly, 61-Stop swing arm, 61a-First stop swing arm, 61b-Second stop swing arm, 62-First stop surface, 63-Second stop surface, 64-Stop body, 641-First surface, 642-Second surface, 65-First connecting rod, 66-Second connecting rod, 67-Avoidance notch, 68-First extension, 69-Second extension, 691-Extension hole, 70-Synchronization assembly, 71-Synchronization gear, 80-Damping assembly, 81-First concave cam, 82-Second concave cam, 83-Main elastic element, 84-Pushing element, 85-First mating concave-convex part, 86-Second mating concave-convex part. Detailed Implementation

[0125] The embodiments of this application are described below with reference to the accompanying drawings.

[0126] This application provides a foldable electronic device, including but not limited to cellphones, notebook computers, tablet computers, personal digital assistants, wearable devices, and mobile devices. In some embodiments, a foldable phone is used as an example for illustration.

[0127] Foldable phones include horizontal foldable phones and vertical foldable phones. Typically, foldable phones are rectangular in shape. A horizontal foldable phone folds along its width, reducing its width to half its unfolded size. A vertical foldable phone folds along its length, reducing its length to half its unfolded size.

[0128] Generally, horizontally foldable phones are mostly large-screen phones, also known as large-screen phones. Here, "large-screen" means that when horizontally foldable phones are unfolded, the screen area is approximately twice the size of a traditional smartphone screen. Vertically foldable phones are mostly small-screen phones, also known as small-screen phones. When vertically foldable phones are unfolded, the screen area is roughly the same as a traditional smartphone screen. Of course, the screen area of ​​a horizontally foldable phone can also be the same as that of a traditional smartphone screen, or a multiple of it, such as 1.5 times, 2.1 times, or 2.5 times, etc. The screen area of ​​a vertically foldable phone can also be 1.2 times, 1.5 times, or 2 times, etc., the size of a traditional smartphone screen. This embodiment uses a horizontally foldable phone as an example for explanation.

[0129] Please refer to Figures 1 and 2. This application provides an electronic device. Figure 1 is a schematic diagram of the foldable electronic device 1000 in a folded state according to an embodiment of this application, and Figure 2 is a schematic diagram of the foldable electronic device 1000 in an unfolded state according to an embodiment of this application. The folding angle of the foldable electronic device 1000 shown in Figure 1 is approximately 0 degrees. The unfolding angle of the foldable electronic device 1000 shown in Figure 2 is approximately 180 degrees. For ease of description, the width direction of the foldable electronic device 1000 is defined as the X direction, the length direction of the foldable electronic device 1000 is defined as the Y direction, and the thickness direction of the foldable electronic device 1000 is defined as the Z direction. The X, Y, and Z directions are all perpendicular to each other.

[0130] It should be noted that the directional terms such as "top," "bottom," "left," "right," "front," and "rear" used in the description of the foldable electronic device 1000 in this application are mainly based on the orientation of the foldable electronic device 1000 shown in Figures 2 and 4. "Top" and "up" refer to the positive Z-axis direction, "bottom" and "down" refer to the negative Z-axis direction, "right" refers to the positive X-axis direction, "left" refers to the negative X-axis direction, "rear" refers to the negative Y-axis direction, and "front" refers to the positive Y-axis direction. These terms do not constitute a limitation on the orientation of the foldable electronic device 1000 in actual application scenarios.

[0131] A foldable electronic device 1000 includes a main body 1100 and a display screen 1300, the display screen 1300 being mounted on the main body 1100. The display screen 1300 can be a flexible screen, and includes a display surface and a mounting surface, which are positioned opposite to each other. The display surface is used to display text, images, and videos, etc. The display screen 1300 includes a first display unit 1310, a second display unit 1320, and a third display unit 1330. The third display unit 1330 is located between the first display unit 1310 and the second display unit 1320.

[0132] Please refer to Figure 3, which is a structural schematic diagram of the main body 1100 of the foldable electronic device 1000 provided in the embodiment of this application.

[0133] The main body 1100 includes two housings 1200 and a rotating mechanism 100. The housing 1200 may include a middle frame (not shown) and a back cover (not shown). The middle frame is provided with a receiving space (not shown) for accommodating devices such as batteries (not shown) and circuit boards (not shown). The back cover is fixedly connected to the middle frame and can close the receiving space to prevent the batteries and circuit boards from being exposed.

[0134] The two housings 1200 are a first housing 1210 and a second housing 1220, respectively. A rotating mechanism 100 is disposed between the first housing 1210 and the second housing 1220. The rotating mechanism 100 is connected to the first housing 1210 and the second housing 1220 respectively to realize the rotating connection between the first housing 1210 and the second housing 1220. The first housing 1210 and the second housing 1220 can rotate relative to each other through the rotating mechanism 100, so that the main body 1100 can switch between a folded state and an unfolded state.

[0135] The display screen 1300 is mounted on the main body 1100, and the mounting surface is fixedly connected to the main body 1100. Specifically, the first housing 1210 carries the first display unit 1310, and the second housing 1220 carries the second display unit 1320. The rotating mechanism 100 is disposed opposite to the third display unit 1330.

[0136] Referring to Figures 2 and 3, the first housing 1210 and the second housing 1220 rotate relative to each other via the rotating mechanism 100. When the foldable electronic device 1000 is in the unfolded state, the display screen 1300 has a large display area, enabling the foldable electronic device 1000 to display and operate on a large screen, thus improving the user experience. Referring to Figure 1, when the foldable electronic device 1000 is in the folded state, the display screen 1300 is positioned between the first housing 1210 and the second housing 1220. The first housing 1210 and the second housing 1220 protect the display surface of the display screen 1300, greatly reducing the probability of damage to the display screen 1300, and also reducing the overall size for easier portability. It can be understood that when the rotating mechanism 100 is in the folded state, the foldable electronic device 1000 is in the folded state; when the rotating mechanism 100 is in the unfolded state, the foldable electronic device 1000 is in the unfolded state.

[0137] Referring to Figures 4, 5, and 6, Figure 4 is a partial structural schematic diagram of the foldable electronic device 1000 provided in an embodiment of this application, Figure 5 is another partial structural schematic diagram of the foldable electronic device 1000 provided in an embodiment of this application, and Figure 6 is a split structural schematic diagram of the rotating mechanism 100 provided in the first embodiment of this application. The rotating mechanism 100 includes a support base 10, a mounting assembly 20, a first swing arm assembly 30, a second swing arm assembly 40, a load-bearing assembly 50, a stop assembly 60, a synchronization assembly 70, and a damping assembly 80. The second swing arm assembly 40, the first swing arm assembly 30, and the stop assembly 60 can each be one or more. The mounting assembly 20 includes two mounting members 21, both of which can be wedge-shaped blocks. The two mounting members 21 are respectively the first mounting member 21a and the second mounting member 21b. The first housing 1210 has a first receiving cavity 1211 on the side facing the second housing 1220, and the second housing 1220 has a second receiving cavity 1221 on the side facing the first housing 1210. A support base 10 is disposed between the first housing 1210 and the second housing 1220. The first mounting member 21a and the second mounting member 21b are respectively fixed within the first receiving cavity 1211 and the second receiving cavity 1221. Figures 4 and 5 only show the portion of the first housing 1210 with the first receiving cavity 1211 and the portion of the second housing 1220 with the second receiving cavity 1221. The remaining portions of the first housing 1210 and the second housing 1220 are not shown. In reality, the first housing 1210 extends a considerable length away from the second housing 1220 (as shown in Figure 2), and the second housing 1220 also extends a considerable length away from the first housing 1210 (as shown in Figure 2).

[0138] It is understood that the first receiving cavity 1211 is disposed in the middle frame of the first housing 1210, and the first receiving cavity 1211 is located on the side of the middle frame of the first housing 1210 away from its receiving space, that is, the first receiving cavity 1211 is located on the side of the middle frame away from the back cover. Furthermore, the receiving space of the middle frame of the first housing 1210 and the first receiving cavity 1211 are completely offset along the X-axis. Similarly, the second receiving cavity 1221 is disposed in the middle frame of the second housing 1220, and the second receiving cavity 1221 is located on the side of the middle frame of the second housing 1220 away from its receiving space, that is, the second receiving cavity 1221 is located on the side of the middle frame away from the back cover. Furthermore, the receiving space of the middle frame of the second housing 1220 and the second receiving cavity 1221 are completely offset along the X-axis. The first receiving cavity 1211 and the second receiving cavity 1221 are only used to receive the rotating mechanism 100, and do not include receiving space for components such as batteries and circuit boards.

[0139] The first swing arm assembly 30 includes two main swing arms 31, which are connected to the support base 10 and the mounting member 21. The two main swing arms 31 are designated as first main swing arm 31a and second main swing arm 31b. The second swing arm assembly 40 includes two swing arms 41, which are connected to the support base 10 and the mounting member 21. The two swing arms 41 are designated as first swing arm 41a and second swing arm 41b. The bearing assembly 50 includes two bearing plates 51, which cover the mounting member 21 and are connected to the main swing arms 31 and the mounting member 21. The two bearing plates 51 are designated as first bearing plate 51a and second bearing plate 51b. The stop assembly 60 includes two stop swing arms 61, which are connected to the mounting member 21 and the bearing plate 51. The two stop swing arms 61 are designated as first stop swing arm 61a and second stop swing arm 61b. The synchronization assembly 70 and the damping assembly 80 are mounted on the support base 10.

[0140] The first swing arm assembly 30 and the second swing arm assembly 40 are used to enable the first housing 1210 and the second housing 1220 to rotate relative to the support base 10. The bearing assembly 50 is used to support the display screen 1300, so that the display screen 1300 remains flat when unfolded. The stop assembly 60 is used to support the housing 1200 when the foldable electronic device 1000 is in the folded state, to prevent the housing 1200 from sliding down relative to the support base 10 when the support base 10 of the foldable electronic device 1000 is subjected to external impact force, which would cause the display screen 1300 to be squeezed. The synchronization assembly 70 is used to enable the first housing 1210 and the second housing 1220 to operate synchronously, and the damping assembly 80 is used to provide damping force when the first housing 1210 and the second housing 1220 are running.

[0141] Figure 7 is a schematic diagram of the rotating mechanism 100 provided in the first embodiment of this application. The first main swing arm 31a is rotatably connected to the first mounting member 21a and slidably and rotatably connected to the support base 10. The first swing arm 41a is slidably and rotatably connected to the first mounting member 21a and rotatably connected to the support base 10. The first support plate 51a slidably and rotatably connects to the first main swing arm 31a and slidably and rotatably connected to the first mounting member 21a. The first stop swing arm 61a is rotatably connected to the first mounting member 21a and slidably and rotatably connected to the first support plate 51a. When the foldable electronic device 1000 switches between an unfolded state and a folded state, the first support plate 51a can drive the first stop swing arm 61a to rotate relative to the first mounting member 21a.

[0142] Similarly, the second main swing arm 31b is rotatably connected to the second mounting member 21b, and the second main swing arm 31b is slidably and rotatably connected to the support base 10. The second swing arm 41b is slidably and rotatably connected to the second mounting member 21b, and the second swing arm 41b is rotatably connected to the support base 10. The second support plate 51b is slidably and rotatably connected to the second main swing arm 31b, and the second support plate 51b is slidably and rotatably connected to the second mounting member 21b. The second stop swing arm 61b is rotatably connected to the second mounting member 21b, and the second stop swing arm 61b is slidably and rotatably connected to the second support plate 51b. When the foldable electronic device 1000 switches between the unfolded state and the folded state, the second support plate 51b can drive the second stop swing arm 61b to rotate relative to the second mounting member 21b.

[0143] In some other embodiments, the first support plate 51a may also be slidably and rotatably connected to the first swing arm 41a, and the second support plate 51b may also be slidably and rotatably connected to the second swing arm 41b, so as to make the operation of the first support plate 51a and the second support plate 51b more stable.

[0144] Referring to Figure 8, which is a structural schematic diagram of the support base 10 of the rotating mechanism 100 shown in Figure 6, the support base 10 includes a shaft cover 11 and a support plate 12. The shaft cover 11 is arc-shaped. Concave arc-shaped receiving grooves 13 and convex arc-shaped surfaces 14 are formed on opposite sides of the shaft cover 11 along the Z-axis. When the foldable electronic device 1000 is in a folded state, the convex arc-shaped surface 14 is part of the external appearance surface of the rotating mechanism 100. The receiving groove 13 includes a main sliding groove 15 and a secondary rotating groove 16 arranged along the Y-axis. There are two main sliding grooves 15 and two secondary rotating grooves 16. The two main sliding grooves 15 are arranged and connected along the X-axis, and the two secondary rotating grooves 16 are arranged and connected along the X-axis. The two secondary rotating grooves 16 are respectively provided with a first mounting shaft 17 and a second mounting shaft 18. Along the X-axis, the first mounting shaft 17 and the second mounting shaft 18 are arranged at intervals, and the axial directions of the first mounting shaft 17 and the second mounting shaft 18 are both parallel to the Y-axis. The secondary rotating groove 16, the first mounting shaft 17, and the second mounting shaft 18 are all used to connect the second swing arm assembly 40, and the main sliding groove 15 is used to connect the first swing arm assembly 30. Along the Z-axis direction, the support plate 12 is stacked and fixed to the shaft cover 11, and covers the receiving groove 13. The surface of the support plate 12 facing away from the shaft cover 11 is used to support the display screen 1300.

[0145] Referring to Figures 9 and 10, Figure 9 is a structural schematic diagram of the mounting assembly 20 of the rotating mechanism 100 shown in Figure 6, and Figure 10 is a structural schematic diagram of the mounting assembly 20 shown in Figure 9 from another perspective.

[0146] The mounting assembly 20 includes two mounting members 21, namely a first mounting member 21a and a second mounting member 21b. The top of each mounting member 21 is provided with a main rotating groove 22, a secondary sliding groove 23, and a first guide slide member 24. The number of first guide slide members 24 can be one, two, or three, etc. In this embodiment, there are two first guide slide members 24, located at opposite ends of the mounting member 21 along the Y-axis.

[0147] A main rotating block 221 is provided within the main rotating groove 22, and the main rotating block 221 has a main rotating hole 222. The main rotating groove 22 and the main rotating block 221 are used to connect with the first swing arm assembly 30. The first guide slide 24 is arc-shaped and is used to connect with the bearing assembly 50. The mounting member 21 also has a receiving hole that extends through the mounting member 21 along the Z-axis. The receiving hole is used to accommodate the protruding part of the bearing assembly 50 to reduce the thickness of the rotating mechanism 100. Along the Y-axis, the receiving hole is located between the main rotating groove 22 and the secondary sliding groove 23.

[0148] The two opposite sides of the secondary sliding groove 23 along the Y-axis are provided with anti-detachment protrusions 231. The anti-detachment protrusions 231 and the bottom surface of the secondary sliding groove 23 are spaced apart and opposite to each other along the Z-axis. The secondary sliding groove 23 is used to connect with the second swing arm assembly 40. The anti-detachment protrusions 231 are used to limit the second swing arm assembly 40 to prevent the swing arm 41 from detaching from the secondary sliding groove 23.

[0149] The secondary sliding groove 23 is provided with a first notch 25 and a connecting protrusion 26. Along the Y-axis direction, the first notch 25 and the connecting protrusion 26 are both located between two anti-detachment protrusions 231. The first notch 25 and the connecting protrusion 26 are arranged along the X-axis direction. The first notch 25 penetrates the bottom surface of the secondary sliding groove 23 and the bottom of the mounting member 21, as well as the side of the mounting member 21 away from the connecting protrusion 26. Both the first notch 25 and the connecting protrusion 26 are used to cooperate with the stop assembly 60. The connecting protrusion 26 includes a connecting top surface 261, a connecting bottom surface 262, a first abutting surface 263, and a connecting side surface 264. Along the Z-axis, the connecting top surface 261 and the connecting bottom surface 262 are opposite to each other. The connecting top surface 261 is located at the top of the mounting member 21, and the connecting bottom surface 262 is located at the bottom of the mounting member 21. The first abutting surface 263 and the connecting side surface 264 are both connected between the connecting top surface 261 and the connecting bottom surface 262. Along the X-axis, the first abutting surface 263 and the connecting side surface 264 are opposite to each other. The first abutting surface 263 is also part of the inner wall surface of the first notch 25. The opening of the first notch 25 is opposite to the first abutting surface 263. The first abutting surface 263 includes a convex arc-shaped surface. The connecting side surface 264 is opposite to the first notch 25.

[0150] The connecting protrusion 26 is provided with a connecting groove 27 and a mounting groove 28. The mounting groove 28 is recessed in the connecting bottom surface 262, and the connecting groove 27 is recessed in the first abutment surface 263 and penetrates through the connecting bottom surface 262. The connecting groove 27 communicates with the first notch 25 and the mounting groove 28. The connecting groove 27 is provided with a supporting inclined surface 29 and a first supporting surface 271. The supporting inclined surface 29 and the first supporting surface 271 face the bottom of the mounting component 21. The supporting inclined surface 29 is connected to the bottom surface of the mounting groove 28 and is inclined relative to the bottom surface of the mounting groove 28. The first supporting surface 271 is inclined relative to the bottom surface of the mounting groove 28. The inclination angle of the first supporting surface 271 is greater than the inclination angle of the supporting inclined surface 29. The supporting surface and the first supporting surface 271 are arranged along the Y-axis direction. The inner wall surface of the mounting groove 28 includes an arcuate surface 281 and a groove peripheral surface 282 that are opposite each other along the X-axis direction, and the arcuate surface 281 is closer to the connecting groove 27 than the groove peripheral surface 282. The arcuate surface 281 includes a concave arcuate surface, and the mounting groove 28 is used to connect with the stop assembly 60.

[0151] Referring to Figure 11, which is a schematic diagram of the structure of the first swing arm assembly 30 of the rotating mechanism 100 shown in Figure 6, the first swing arm assembly 30 includes two main swing arms 31, namely a first main swing arm 31a and a second main swing arm 31b. Both the first main swing arm 31a and the second main swing arm 31b include a main rotating part 32 and a main sliding part 33 fixedly connected along the X-axis direction. The main rotating part 32 is connected to a main rotating shaft 34 and a second guide slide 35. The main rotating part 32 is used to cooperate with the main rotating groove 22, and the main rotating shaft 34 is used to cooperate with the main rotating hole 222. The second guide slide 35 can be rod-shaped and protrudes from one side of the main sliding part 33 along the Y-axis direction, and is used to connect with the bearing assembly 50.

[0152] Referring to Figure 12, which is a structural schematic diagram of the second swing arm assembly 40 of the rotating mechanism 100 shown in Figure 6, the second swing arm assembly 40 includes two swing arms 41, namely a first swing arm 41a and a second swing arm 41b. Each swing arm 41 includes two auxiliary rotating portions 42 and an auxiliary sliding portion 43 fixedly connected along the X-axis. The two auxiliary rotating portions 42 are a first rotating portion 44 and a second rotating portion 45, which are spaced apart and opposite to each other along the Y-axis. The auxiliary sliding portion 43 is used to cooperate with the auxiliary sliding groove 23 of the mounting member 21. The auxiliary rotating portion 42 of the first swing arm 41a is used to connect to the first mounting shaft 17, and the auxiliary rotating portion 42 of the second swing arm 41b is used to connect to the second mounting shaft 18. The auxiliary sliding portion 43 has a second notch 46 that penetrates the auxiliary sliding portion 43 along the Z-axis and also penetrates the side of the auxiliary sliding portion 43 opposite to the auxiliary rotating portion 42. The inner wall surface of the second notch 46 includes a first groove side surface 461, a second groove side surface 462, and a second abutting surface 463. Along the Y-axis, the first groove side surface 461 and the second groove side surface 462 are spaced apart and opposite to each other. The second abutting surface 463 connects the first groove side surface 461 and the second groove side surface 462, and is parallel to the plane formed by the Z-axis and Y-axis directions. The opening of the second notch 46 is opposite to the second abutting surface 463. Both the second notch 46 and the second abutting surface 463 are used to cooperate with the stop assembly 60.

[0153] The secondary sliding part 43 is also provided with a support groove 47, which is recessed in the top surface of the secondary sliding part 43 and penetrates the end face of the secondary sliding part 43 away from the secondary rotating part 42. The support groove 47 also penetrates two opposite sides of the secondary sliding part 43 along the Y-axis direction. Along the Z-axis direction, the support groove 47 is connected to the second notch 46. The inner wall surface of the support groove 47 is the second support surface 48. The second support surface 48 and the second abutment surface 463 are parallel to each other and have the same orientation.

[0154] Referring to Figures 13 and 14, Figure 13 is a structural schematic diagram of the support component 50 of the rotating mechanism 100 shown in Figure 6, and Figure 14 is a structural schematic diagram of the support component 50 shown in Figure 13 from another perspective. The support component 50 includes two support plates 51, namely a first support plate 51a and a second support plate 51b. The support plates 51 are generally rectangular plates. The top surface of the support plate 51 is used to support the display screen 1300, and the bottom surface of the support plate 51 is provided with a first protrusion 52, a second protrusion 53, and a third protrusion 54. There can be two second protrusions 53, which are located at both ends of the support plate 51 along the Y-axis direction. The first protrusion 52 and the third protrusion 54 are both located between the two second protrusions 53, and the second protrusion 53, the third protrusion 54, and the first protrusion 52 are arranged alternately along the Y-axis direction. Optionally, the bottom surface of the support plate 51 is recessed with a receiving groove 55, and the first protrusion 52 protrudes from the bottom surface of the receiving groove 55. By providing a receiving groove 55 to accommodate the swing arm 41, the thickness dimension of the rotating mechanism 100 along the Z-axis direction can be reduced, thereby improving the structural compactness of the rotating mechanism 100 and facilitating the lightweight design of the foldable electronic device 1000.

[0155] The first protrusion 52 has a connecting hole 56 extending through it along the Y-axis. The connecting hole 56 is oblong, with its major axis extending along the X-axis and inclined relative to it. The connecting hole 56 is used to connect with the stop assembly 60. The second protrusion 53 has a first guide groove 57, and the third protrusion 54 has a second guide groove 58. Both the first guide groove 57 and the second guide groove 58 are arc-shaped grooves. The first guide groove 57 is used to mate with the first guide member 24 of the mounting member 21, and the second guide groove 58 is used to mate with the second guide member 35 of the first swing arm assembly 30.

[0156] The support plate 51 is provided with a first limiting surface 521 and a second limiting surface 510. The first limiting surface 521 is part of the outer surface of the first protrusion 52, and the second limiting surface 510 is a side surface of the support plate 51 located in the X-axis direction. The first limiting surface 521 and the second limiting surface 510 are arranged at intervals along the X-axis direction. The first limiting surface 521 is an inclined surface.

[0157] Referring to Figures 15 and 16, Figure 15 is a structural schematic diagram of the stop assembly 60 of the rotating mechanism 100 shown in Figure 6, and Figure 16 is a structural schematic diagram of the stop assembly 60 shown in Figure 15 from another perspective. The stop assembly 60 includes two stop swing arms 61, namely the first stop swing arm 61a and the second stop swing arm 61b. The outer contour of the stop swing arm 61 is approximately rectangular, and the stop swing arm 61 is provided with a first stop surface 62 and a second stop surface 63. Specifically, the stop swing arm 61 includes a stop body 64, a first connecting rod 65, and a second connecting rod 66. The stop body 64 is used to provide the first stop surface 62 and the second stop surface 63, and the first connecting rod 65 and the second connecting rod 66 are used to connect the stop swing arm 61 to other components. This allows the stop swing arm 61 to achieve a supporting function while having a relatively simple structure, being easy to manufacture, and facilitating the connection of the stop swing arm 61 to other components. The first connecting rod 65 and the second connecting rod 66 are spaced apart from each other on the stop body 64. The first connecting rod 65 is movably connected to the mounting component 21, and the second connecting rod 66 is movably connected to the support plate 51. Specifically, the first connecting rod 65 is rotatably connected to the mounting component 21, and the second connecting rod 66 is slidably and rotatably connected to the support plate 51.

[0158] The stop body 64 is generally rectangular thin plate in shape. The length direction of the stop body 64 is parallel to the X-axis direction, and the width direction of the stop body 64 is parallel to the Y-axis direction. Optionally, the stop body 64 can also be a regular shape such as a square, parallelogram, or trapezoid, or it can be an irregular shape. The stop body 64 includes a first surface 641, a second surface 642, a first stop surface 62, and a second stop surface 63. Along the thickness direction of the stop body 64, the first surface 641 and the second surface 642 are opposite to each other, and along the length direction of the stop body 64, the first stop surface 62 and the second stop surface 63 are opposite to each other. The first stop surface 62 includes a concave arc-shaped surface and is used to mate with the first abutment surface 263 on the mounting member 21. The second stop surface 63 is used to mate with the second abutment surface 463 of the swing arm 41.

[0159] The stop body 64 has a clearance notch 67, a first extension 68, and a second extension 69. The clearance notch 67 penetrates the stop body 64 along its thickness direction, that is, it penetrates the first surface 641 and the second surface 642. The first extension 68 protrudes from the first stop surface 62, and its width is smaller than the width of the stop body 64. There are two second extensions 69, both of which protrude from the first surface 641 and are located on either side of the clearance notch 67 along the width direction of the stop body 64. Each second extension 69 has an extension hole 691 that penetrates the second extension 69 along the width direction of the stop body 64.

[0160] The first connecting rod 65 is connected to the side of the first extension 68 away from the stop body 64. It can be understood that the first connecting rod 65 can be fixed to the first extension 68. The two ends of the second connecting rod 66 are respectively connected to the extension holes 691 of the two second extensions 69. It can be understood that the second connecting rod 66 can rotate relative to the stop body 64. The middle part of the second connecting rod 66 is opposite to the clearance notch 67. The axial directions of both the first connecting rod 65 and the second connecting rod 66 are parallel to the Y-axis direction. The first connecting rod 65 is used to connect with the mounting groove 28 of the mounting member 21, and the second connecting rod 66 is used to connect with the connecting hole 56 of the bearing plate 51.

[0161] Referring to Figures 17 and 18, Figure 17 is a schematic diagram of the rotating mechanism 100 provided in the first embodiment of this application in an unfolded state, and Figure 18 is a partial schematic diagram of the rotating mechanism 100 shown in Figure 17. Two main swing arms 31 are rotatably connected to two mounting members 21, and the two main swing arms 31 are slidably and rotatably connected to the support base 10. The main rotating part 32 is rotatably connected to the main rotating groove 22, and the main sliding part 33 is slidably and rotatably connected to the main sliding groove 15. Specifically, the main rotating part 32 of the first main swing arm 31a extends into the main rotating groove 22 of the first mounting member 21a, and the main rotating shaft 34 of the first main swing arm 31a is rotatably connected to the main rotating hole 222 of the first mounting member 21a. The main rotating part 32 of the second main swing arm 31b extends into the main rotating groove 22 of the second mounting member 21b, and the main rotating shaft 34 of the second main swing arm 31b is rotatably connected to the main rotating hole 222 of the second mounting member 21b. The main sliding portion 33 of the first main swing arm 31a and the main sliding portion 33 of the second main swing arm 31b are slidably connected to the two main sliding grooves 15 of the support base 10, respectively. When the foldable electronic device 1000 switches between the unfolded state and the folded state, the main rotating portion 32 of the main swing arm 31 rotates relative to the mounting member 21, and the main sliding portion 33 of the main swing arm 31 slides and rotates relative to the support base 10.

[0162] Referring to Figure 18, two swing arms 41 are slidably and rotatably connected to two mounting members 21, and the two swing arms 41 are rotatably connected to a support base 10. The secondary sliding portion 43 is slidably and rotatably connected to the secondary sliding groove 23. Along the Z-axis, the opening of the second notch 46 of the swing arm 41 and the opening of the first notch 25 of the mounting member 21 are opposite to each other, so that the first notch 25 and the second notch 46 are connected. The secondary rotating portion 42 is rotatably connected to the support base 10. Specifically, the secondary sliding portion 43 of the first swing arm 41a is slidably and rotatably connected to the secondary sliding groove 23 of the first mounting member 21a. The secondary sliding portion 43 of the second swing arm 41b is slidably and rotatably connected to the secondary sliding groove 23 of the second mounting member 21b. The secondary rotating part 42 of the first swing arm 41a is connected to the first mounting shaft 17, and the secondary rotating part 42 of the first swing arm 41a can rotate around the first mounting shaft 17. The secondary rotating part 42 of the second swing arm 41b is connected to the second mounting shaft 18, and the secondary rotating part 42 of the second swing arm 41b can rotate around the second mounting shaft 18. When the foldable electronic device 1000 switches between the unfolded state and the folded state, the secondary rotating part 42 of the swing arm 41 rotates relative to the support base 10, and the secondary sliding part 43 of the swing arm 41 slides and rotates relative to the mounting member 21.

[0163] Referring to Figures 19 and 20, Figure 19 is a cross-sectional view of Figure 17 along the BB direction, and Figure 20 is a cross-sectional view of Figure 17 along the CC direction. Two support plates 51 are stacked on top of two mounting members 21, with the bottom surface of the support plate 51 facing the mounting member 21. Specifically, the first support plate 51a covers the first mounting member 21a, and the second support plate 51b covers the second mounting member 21b. The two support plates 51 are slidably and rotatably connected to the two mounting members 21, and the two support plates 51 are slidably and rotatably connected to the two main swing arms 31. The first guide slide member 24 of the mounting member 21 is slidably and rotatably connected to the first guide slide groove 57 of the support plate 51, and the second guide slide member 35 of the main swing arm 31 is slidably and rotatably connected to the second guide slide groove 58 of the support plate 51. Specifically, the first guide slide 24 of the first mounting member 21a is slidably and rotatably connected to the first guide slide groove 57 of the first support plate 51a, and the second guide slide 35 of the first main swing arm 31a is slidably and rotatably connected to the second guide slide groove 58 of the first support plate 51a. The first guide slide 24 of the second mounting member 21b is slidably and rotatably connected to the first guide slide groove 57 of the second support plate 51b, and the second guide slide 35 of the second main swing arm 31b is slidably and rotatably connected to the second guide slide groove 58 of the second support plate 51b. When the foldable electronic device 1000 switches between the unfolded state and the folded state, the support plate 51 slides and rotates relative to the mounting member 21, and the support plate 51 slides and rotates relative to the main swing arm 31.

[0164] When the foldable electronic device 1000 is in the unfolded state, the top surfaces of the first housing 1210, the first support plate 51a, the support plate 12, the second support plate 51b, and the second housing 1220 are arranged sequentially along the X-axis to form an integral plane. This integral plane supports the display screen 1300, allowing the display screen 1300 to remain flat. When the foldable electronic device 1000 is in the folded state, the first housing 1210 and the second housing 1220 are opposite each other along the Z-axis, and the first support plate 51a and the second support plate 51b are opposite each other along the Z-axis. The first support plate 51a is tilted relative to the first housing 1210, and the second support plate 51b is tilted relative to the second housing 1220. At this time, the two support plates 51 and the support base 10 enclose an accommodating space, and the third display section 1330 of the display screen 1300 is bent and located within the accommodating space.

[0165] Referring to Figures 21, 22, 23, and 24, Figure 21 is a partial structural schematic diagram of the rotating mechanism 100 shown in Figure 18, showing the assembly of the mounting member 21 and the stop arm 61. Figure 22 is another structural schematic diagram of the assembly of the stop arm 61 and the mounting member 21 shown in Figure 21. Figure 23 is a cross-sectional view of Figure 17 along the EE direction, and Figure 24 is a cross-sectional view of Figure 17 along the FF direction. The stop arm 61 is movably connected to the mounting member 21 on one side and to the support plate 51 on the other side. Furthermore, when the foldable electronic device 1000 switches between an unfolded state and a folded state, the movement of the mounting member 21 and the support plate 51 can drive the stop arm 61 to move, thus enabling the stop arm 61 to support the housing 1200 while preventing it from interfering with the normal operation of the rotating mechanism 100.

[0166] Specifically, the two stop arms 61 are rotatably connected to the two mounting pieces 21, and the two stop arms 61 are slidably and rotatably connected to the two support plates 51. That is, the first stop arm 61a is rotatably connected to the first mounting piece 21a, and the first stop arm 61a is slidably and rotatably connected to the first support plate 51a. The second stop arm 61b is rotatably connected to the second mounting piece 21b, and the second stop arm 61b is slidably and rotatably connected to the second support plate 51b. Specifically, referring to Figures 22 and 23, the first extension 68 of the stop arm 61 extends into the connecting groove 27 of the mounting piece 21, that is, the first extension 68 extends into the mounting groove 28. The first connecting rod 65 is rotatably connected to the mounting groove 28, and the first connecting rod 65 of the stop arm 61 extends into the mounting groove 28. The first connecting rod 65 can rotate along the arc surface 281 of the mounting groove 28, so that the stop arm 61 is rotatably connected to the mounting piece 21. Referring to Figure 24, the second extension 69 of the stop arm 61 extends into the receiving groove 55 of the support plate 51. The first protrusion 52 of the support plate 51 passes through the gap between the two second extensions 69 and extends into the clearance notch 67 of the stop arm 61. The second connecting rod 66 is slidably and rotatably connected to the connecting hole 56. The second connecting rod 66 passes through the connecting hole 56 of the first protrusion 52 and can slide and rotate within the connecting hole 56, so that the stop arm 61 is slidably and rotatably connected to the support plate 51. In addition, the first abutting surface 263 of the mounting member 21 contacts the first stop surface 62 of the stop arm 61. The first abutting surface 263 is a concave arc surface, and the first stop surface 62 is a convex arc surface. When the stop arm 61 rotates relative to the mounting member 21, the convex arc surface moves along the concave arc surface to guide the movement of the stop arm 61, making the stop arm 61 run more smoothly.

[0167] It is understandable that, referring to Figure 23, in order to avoid interference between the stop arm 61 and the mounting part 21 when they rotate relative to each other, when the rotating mechanism 100 is in the unfolded state, the tangent Q of the convex arc surface is completely offset from the concave arc surface, thereby preventing interference between the stop arm 61 and the mounting part 21 when they rotate relative to each other.

[0168] Referring again to Figures 23 and 24, when the foldable electronic device 1000 is in the unfolded state, a portion of the secondary sliding portion 43 of the swing arm 41, without the first notch 25, extends into the secondary sliding groove 23 of the mounting member 21. A portion of the stop arm 61 is located on the upper side of the mounting member 21, and another portion of the stop arm 61 extends through the first notch 25 of the mounting member 21 to the lower side of the mounting member 21. Specifically, the stop body 64 of the stop arm 61 is located on the upper side of the mounting member 21, and the stop arm 61 is inclined relative to the mounting member 21 and relative to the swing arm 41. Along the Z-axis direction, a portion of the stop body 64 and the secondary sliding portion 43 are spaced apart and opposite each other, and another portion of the stop body 64 is spaced apart and opposite to the second notch 46 of the secondary sliding portion 43. The first notch 25 of the mounting member 21 is located on the side of the second notch 46 away from the stop body 64. The first extension 68 of the stop arm 61 passes through the connecting groove 27, causing the first connecting rod 65 of the stop arm 61 to extend to the lower side of the mounting member 21, and the first connecting rod 65 of the stop arm 61 is located in the mounting groove 28. At this time, along the X-axis direction, the first stop surface 62 and the first abutment surface 263 are opposite each other. The top surface of the first extension 68 contacts the support slope 29 of the mounting member 21 to support the stop arm 61 and prevent the stop arm 61 from shaking.

[0169] Furthermore, when the foldable electronic device 1000 is in the unfolded state, the stop arm 61 is tilted relative to the swing arm 41. Along the X-axis, the first abutment surface 263 and the second abutment surface 463 are offset from each other. The first abutment surface 263, the second abutment surface 463, and the first stop surface 62 are all parallel to a reference plane, which is the plane formed by the Y-axis and Z-axis directions. The second stop surface 63 and the reference plane form an angle α, where α is between 25 and 35 degrees, specifically 25, 27, 29, 30, 32, 34, or 35 degrees.

[0170] Figure 25 is a structural schematic diagram of the rotating mechanism 100 provided in the first embodiment of this application in a semi-expanded state. Figure 26 is a partial structural schematic diagram of the rotating mechanism 100 shown in Figure 25. Figure 27 is a cross-sectional view of Figure 25 along the DD direction. Figure 28 is a structural schematic diagram of the rotating mechanism 100 provided in the first embodiment of this application switching from an unfolded state to a folded state.

[0171] When the foldable electronic device 1000 switches from an unfolded state to a folded state, the secondary sliding portion 43 of the swing arm 41 slides and rotates relative to the mounting member 21. The portion of the secondary sliding portion 43 without the first notch 25 gradually exits from the secondary sliding groove 23, that is, the portion of the secondary sliding portion 43 extending into the secondary sliding groove 23 gradually decreases. At this time, along the X-axis direction, the mounting groove 28 of the mounting member 21, the connecting groove 27 of the mounting member 21, the first notch 25 of the mounting member 21, and the second notch 46 of the swing arm 41 gradually connect in sequence, and the misalignment distance between the first abutment surface 263 and the second abutment surface 463 gradually decreases. The stop swing arm 61 rotates relative to the mounting member 21 and slides and rotates relative to the support plate 51. The first connecting rod 65 of the stop swing arm 61 rotates in the mounting groove 28, the second connecting rod 66 of the stop swing arm 61 slides and rotates in the connecting hole 56, and the first stop surface 62 of the stop swing arm 61 moves along the first abutment surface 263 of the mounting member 21. The inclination of the stop arm 61 relative to the swing arm 41 gradually decreases, and the stop body 64 of the stop arm 61 gradually extends into the first notch 25 of the mounting part 21 and the second notch 46 of the swing arm 41.

[0172] When the foldable electronic device 1000 switches between a folded state and an unfolded state, the first connecting rod 65 only rotates within the mounting slot 28, causing a change in the angle between the stop arm 61 and the mounting member 21, without any relative displacement between them. The second connecting rod 66 slides and rotates relative to the support plate 51, that is, the angle between the stop arm 61 and the support plate 51 changes, and a relative displacement occurs between them. This allows the stop arm 61 to move with the unfolding and folding of the rotating mechanism 100, preventing it from interfering with the normal operation of the mechanism. Furthermore, the rotation angle of the stop arm 61 relative to the support base 10 is greater than the rotation angle of the support plate 51 relative to the support base 10.

[0173] Referring to Figures 29, 30, and 31, Figure 29 is a schematic diagram of the rotating mechanism 100 provided in the first embodiment of this application in a folded state; Figure 30 is a cross-sectional view of Figure 29 along the MM direction; and Figure 31 is a cross-sectional view of Figure 29 along the NN direction. When the foldable electronic device 1000 is in a folded state, the openings of the first notch 25 and the second notch 46 are opposite to each other, making the first notch 25 and the second notch 46 connected, and the first abutment surface 263 and the second abutment surface 463 are spaced apart and opposite to each other. Furthermore, at least a portion of the stop arm 61 is located within the first notch 25 and the second notch 46, and at least a portion of the stop arm 61 is located between the first abutment surface 263 and the second abutment surface 463. Specifically, the stop body 64 of the stop arm 61 is located within the first notch 25 of the mounting member 21 and the second notch 46 of the swing arm 41. The first stop surface 62 and the first abutment surface 263 are positioned opposite each other. This "opposite" can be understood as follows: along the direction from the support base 10 to the mounting member 21, i.e., along the X-axis, the orthographic projection of the first stop surface 62 onto the mounting member 21 is at least partially located on the first abutment surface 263. Furthermore, the first abutment surface 263 and the first stop surface 62 are in direct contact. The second stop surface 63 and the second abutment surface 463 are positioned opposite each other. This "opposite" can be understood as follows: along the direction from the support base 10 to the mounting member 21, at least a portion of the orthographic projection of the second stop surface 63 onto the swing arm is located on the second abutment surface 463. Furthermore, there is a gap between the second stop surface 63 and the second abutment surface 463, or the second stop surface 63 and the second abutment surface 463 are in direct contact. However, normally, due to processing and assembly reasons, there is a gap h1 between the second stop surface 63 and the second abutment surface 463. By setting a first notch 25 and a second notch 46, and setting a portion of the inner wall surface of the first notch 25 as a first abutting surface 263 and a portion of the inner wall surface of the second notch 46 as a second abutting surface 463, the structural compactness of the rotating mechanism 100 can be increased.

[0174] When the foldable electronic device 1000 is in the folded state, the first stop surface 62 and the first abutment surface 263 are parallel to each other. This results in a large contact area and surface-to-surface contact when the first stop surface 62 and the first abutment surface 263 come into contact. This increases the force balance between the stop arm 61 and the mounting component 21, thereby reducing the risk of damage to the stop arm 61 and the mounting component 21. Similarly, the second stop surface 63 and the second abutment surface 463 are parallel to each other. This also results in a large contact area and surface-to-surface contact when the second stop surface 63 and the second abutment surface 463 come into contact. This further increases the force balance between the stop arm 61 and the swing arm 41, thereby reducing the risk of damage to the stop arm 61 and the swing arm 41.

[0175] Referring to Figure 32, Figure 32 is a diagram showing the state changes of the rotating mechanism 100 provided in the first embodiment of this application when it is in a folded state and subjected to an external impact force. Figure 32(a) shows the state of the rotating mechanism 100 of the foldable electronic device 1000 before it is subjected to an external impact force. Figure 32(b) shows the state of the rotating mechanism 100 of the foldable electronic device 1000 after it is subjected to an external impact force. When the foldable electronic device 1000 is in a folded state, the first housing 1210 and the second housing 1220 are folded relative to each other, that is, the first housing 1210 and the second housing 1220 are stacked along the Z-axis direction, the two support plates 51 are opposite each other along the Z-axis direction, and the upper surface of the support plate 51 is inclined relative to the upper surface of the housing 1200. The two support plates 51 and the support plate 12 enclose a teardrop-shaped screen-accommodating space. The third display part 1330 of the display screen 1300 is located within the screen-accommodating space, and the third display part 1330 is bent into a teardrop shape. Of course, the third display part 1330 can also be bent into other shapes.

[0176] When the first housing 1210 and the second housing 1220 are folded relative to each other, and the support base 10 is subjected to an external impact force, the support base 10 is located at the bottom of the foldable electronic device 1000. The housing 1200, the mounting member 21, the swing arm 41, and the support base 10 are arranged sequentially from top to bottom. That is, the first housing 1210, the first mounting member 21a, the first swing arm 41a, and the support base 10 are arranged sequentially from top to bottom, and the second housing 1220, the second mounting member 21b, the second swing arm 41b, and the support base 10 are arranged sequentially from top to bottom.

[0177] When the support base 10 is subjected to an external impact force, the swing arm 41 is supported by the mounting shaft and will not slide downward. The housing 1200, mounting member 21, and stop swing arm 61 are not supported; the first stop surface 62 and the first abutment surface 263 are in contact, and there is a gap h1 between the second stop surface 63 and the second abutment surface 463. The housing 1200, mounting member 21, and stop swing arm 61 will slide downward relative to the swing arm 41. As the mounting member 21 and stop swing arm 61 slide downward, the second stop surface 63 gradually comes into contact with the second abutment surface 463.

[0178] Referring to Figure 32, after the first stop surface 62 and the first abutting surface 263 abut together, and the second stop surface 63 and the second abutting surface 463 abut together, the housing 1200, the mounting member 21, and the stop swing arm 61 all stop sliding down, and the housing 1200, the mounting member 21, the stop swing arm 61, the swing arm 41, and the support base 10 are relatively fixed. The downward sliding distance of the housing 1200 and the mounting member 21 is equal to the width of the gap h1. The gap h1 is very small, therefore, the downward movement distance of the first display part 1310 and the second display part 1320 is very small, which can prevent wrinkles or even breakage at the connection between the first display part 1310 and the third display part 1330, and can also prevent wrinkles or even breakage at the connection between the second display part 1320 and the third display part 1330, that is, prevent the display screen 1300 from being squeezed. In addition, it can prevent the entire display screen 1300 from failing.

[0179] That is, it can reduce the intrusion of the support base 10, reduce the stress on the display screen 1300, and improve the drop reliability of the foldable electronic device 1000. Moreover, compared with the traditional stop structure, when the foldable electronic device 1000 switches from the folded state to the unfolded state, the stop arm 61 rotates faster, and the overlap with the mounting part 21 and the swing arm 41 is greater without affecting the normal operation of the rotating mechanism 100.

[0180] In addition, the impact force of the support base 10 can be transmitted to the housing 1200 in sequence through the swing arm 41, the stop swing arm 61 and the mounting member 21, forming an effective force transmission path between the support base 10, the swing arm 41, the stop swing arm 61, the mounting member 21 and the housing 1200. This effective force transmission path can disperse the impact force to the support base 10, the swing arm 41, the stop swing arm 61, the mounting member 21 and the housing 1200, thereby reducing the stress on the support base 10 and preventing damage to the support base 10.

[0181] Of course, it is understandable that if the first housing 1210 and the second housing 1220 are folded relative to each other, and the support base 10 is not subjected to external impact, the first stop surface 62 is already in contact with the first abutment surface 263, and the second stop surface 63 is already in contact with the second abutment surface 463. Therefore, after the support base 10 is subjected to external impact, the housing 1200, the mounting member 21, and the stop arm 61 will tend to move downwards. However, the support base 10, the swing arm 41, and the stop arm 61 are relatively fixed and have become a whole, forming an effective force transmission path. Therefore, the housing 1200 will not move downwards, thus preventing the display screen 1300 from being squeezed.

[0182] Referring to Figures 31 and 33, Figure 33 is a simplified schematic diagram illustrating the projection relationship of the first abutment surface 263, the second abutment surface 463, the first stop surface 62, and the second stop surface 63 according to the first embodiment of this application. In this embodiment, when the rotating mechanism 100 is in a folded state, the orthographic projection of the first abutment surface 263 onto the reference surface M completely covers the orthographic projection of the first stop surface 62 onto the reference surface M. Complete coverage includes two cases: First, the areas and shapes of the orthographic projections of the first abutment surface 263 and the first stop surface 62 onto the reference surface M are the same and completely overlap. Second, the area of ​​the orthographic projection of the first abutment surface 263 onto the reference surface M is larger than the area of ​​the orthographic projection of the first stop surface 62 onto the reference surface M, and the orthographic projection of the first stop surface 62 is completely covered by the orthographic projection of the first abutment surface 263.

[0183] And / or, the orthographic projection of the second abutment surface 463 onto the reference surface M completely covers the orthographic projection of the second stop surface 63 onto the reference surface M. Complete coverage includes two cases: First, the areas and shapes of the orthographic projections of the second abutment surface 463 and the second stop surface 63 onto the reference surface M are the same and completely overlap. Second, the area of ​​the orthographic projection of the second abutment surface 463 onto the reference surface M is larger than the area of ​​the orthographic projection of the second stop surface 63 onto the reference surface M, and the orthographic projection of the second stop surface 63 is completely covered by the orthographic projection of the second abutment surface 463. The reference surface M is perpendicular to the direction from the support base 10 to the mounting member 21. Therefore, when the support base 10 is subjected to external impact, the contact area between the first stop surface 62 and the first abutment surface 263 is larger. This ensures that the stop arm 61 and the mounting member 21 are subjected to balanced forces, thereby preventing damage to the stop arm 61 and the mounting member 21. The contact area between the second stop surface 63 and the second abutment surface 463 is also larger. This design ensures that the stop arm 61 and the swing arm 41 are subjected to balanced forces, thereby preventing damage to the stop arm 61 and the swing arm 41, and further increasing the stability of the housing, preventing it from sliding downwards, and further reducing the risk of the display screen being squeezed. In addition, this structural design allows the stop arm 61 to be completely positioned between the first abutment surface 263 and the second abutment surface 463. The smaller size of the stop arm 61 increases the structural compactness of the rotating mechanism 100.

[0184] Furthermore, when the foldable electronic device 1000 is in a folded state, the orthographic projections of the first abutment surface 263, the second abutment surface 463, the first stop surface 62, and the second stop surface 63 on the reference plane M are all completely coincident. This can further increase the stability of the support mounting member 21.

[0185] In this embodiment, the center planes of the first stop surface 62 and the first abutment surface 263 coincide. Here, the center plane is perpendicular to the aforementioned reference plane M and parallel to the plane formed by the X-axis and Y-axis directions. This increases the structural compactness of the rotating mechanism 100 and further enhances the stability of the contact between the mounting member 21 and the stop arm 61, thereby improving the stability of the stop arm 61 supporting the mounting member 21. The center planes of the second stop surface 63 and the second abutment surface 463 coincide. Here, the center plane is perpendicular to the aforementioned reference plane M. This increases the structural compactness of the rotating mechanism 100 and further enhances the stability of the contact between the stop arm 61 and the swing arm 41, improving the support effect of the swing arm 41 on the stop arm 61, thereby increasing the stability of the stop arm 61 supporting the mounting member 21.

[0186] In this embodiment, when the rotating mechanism 100 is in a folded state, the entire stop body 64 is located between the first abutment surface 263 and the second abutment surface 463, that is, the entire stop body 64 is located within the first notch 25 and the second notch 46. Specifically, the orthographic projection of the first abutment surface 263 onto the reference plane M completely covers the orthographic projection of the stop body 64 onto the reference plane M. Similarly, the orthographic projection of the second abutment surface 463 onto the reference plane M completely covers the orthographic projection of the stop body 64 onto the reference plane M. Therefore, the center of gravity of the stop arm 61 must be located between the first abutment surface 263 and the second abutment surface 463. This increases the structural compactness of the rotating mechanism 100 and prevents the stop arm 61 from tilting into the screen space when the foldable electronic device is dropped, thus preventing the stop arm 61 from detaching from the swing arm 41 and causing failure of support for the mounting component 21.

[0187] Further, referring to Figure 33, when the foldable electronic device 1000 is in a folded state, along the X-axis direction, the center planes of the first abutment surface 263, the second abutment surface 463, the first stop surface 62, and the second stop surface 63 are all L. This center plane L is parallel to the plane formed by the X-axis and Y-axis directions, and is perpendicular to the reference plane M. Furthermore, this center plane L is also perpendicular to the first abutment surface 263, the second abutment surface 463, the first stop surface 62, and the second stop surface 63. That is, the center planes of the first abutment surface 263, the second abutment surface 463, the first stop surface 62, and the second stop surface 63 coincide. This coincidence includes any error, which can be ±1 mm. Therefore, when the support base 10 is subjected to external impact force, the contact area between the first stop surface 62 and the first abutment surface 263 is larger, and the contact area between the second stop surface 63 and the second abutment surface 463 is larger, which can increase the support force on the housing 1200 and increase the stability of the housing 1200.

[0188] Furthermore, the center of gravity of the stop arm 61 is located on the central plane L. When the support base 10 is subjected to external impact, the force between the stop arm 61 and the swing arm 41 includes the contact force between them and the weight of the stop arm 61. If the center of gravity of the stop arm 61 is not located between the first abutment surface 263 and the second abutment surface 463, the stop arm 61 may tilt relative to the swing arm 41. In this case, the stability of the stop arm 61 deteriorates, which in turn leads to a decrease in the stability of the housing 1200. However, when the center of gravity of the stop arm 61 is located between the first abutment surface 263 and the second abutment surface 463, the stop arm 61 is very stable, thereby enhancing the stability of the housing 1200.

[0189] When the foldable electronic device 1000 is in the folded state, the stop arm 61 gradually retracts from the connecting groove 27, the first protrusion 52 of the support plate 51 gradually extends into the connecting groove 27 of the mounting member 21, and a portion of the support plate 51 gradually extends into the support groove 47 of the swing arm 41. At this time, the first support surface 271 of the mounting member 21 and the first limiting surface 521 of the support plate 51 are opposite each other, and the second support surface 48 of the swing arm 41 and the second limiting surface 510 of the support plate 51 are opposite each other. This opposition includes both cases with a gap and direct contact. It is understood that, usually due to assembly and processing errors, there is a gap h2 between the first support surface 271 and the first limiting surface 521, and a gap h3 between the second support surface 48 and the second limiting surface 510.

[0190] When the foldable electronic device 1000 is in the folded state, the first support surface 271 and the first limiting surface 521 are parallel to each other. This results in a large contact area and surface-to-surface contact when the first support surface 271 and the first limiting surface 521 abut against each other. This increases the force balance between the support plate 51 and the mounting component 21, thereby reducing the risk of damage to the support plate 51 and the mounting component 21. Similarly, the second support surface 48 and the second limiting surface 510 are parallel to each other. This also results in a large contact area and surface-to-surface contact when the second support surface 48 and the second limiting surface 510 abut against each other. This further increases the force balance between the support plate 51 and the swing arm 41, thereby reducing the risk of damage to the support plate 51 and the swing arm 41.

[0191] In the related art, referring to Figure 34, Figure 34 is a diagram showing the state changes of the foldable electronic device 1000 in a folded state when subjected to an external impact force. Figure 34(a) shows the state of the foldable electronic device 1000 before being subjected to an impact force. Figure 34(b) shows the state of the foldable electronic device 1000 after being subjected to an impact force. When the foldable electronic device 1000 is in a folded state, if the foldable electronic device 1000 is accidentally dropped and the support base 10 is at the impact position, the support base 10 will be subjected to an impact force. Under the action of the impact force, the swing arm 41 will slide relative to the housing 1200. At this time, the housing 1200 moves towards the support base 10. The first display part 1310 of the display screen 1300 is fixedly connected to the first housing 1210, and the second display part 1320 is fixedly connected to the second housing 1220. Therefore, the first display part 1310 and the second display part 1320 also move towards the support base 10. At this time, the third display part 1330 will be squeezed. This causes the third display unit 1330 to malfunction, which in turn causes the entire display screen 1300 to malfunction.

[0192] Compared with related technologies, in this embodiment, when the housing 1200 and the mounting member 21 slide downwards, the first stop surface 62 and the first abutting surface 263 abut against each other, and the second stop surface 63 and the second abutting surface 463 abut against each other. This allows the housing 1200 to slide downwards only a very small distance, or even not downwards at all, thus preventing the display screen 1300 from malfunctioning.

[0193] In another related technology, referring to Figure 35, Figure 35 is a diagram showing the state changes of a foldable electronic device 1000 in a folded state when subjected to an external impact force. Figure 35(a) shows the state of the foldable electronic device 1000 before being subjected to the impact force. Figure 35(b) shows the state of the foldable electronic device 1000 after being subjected to the impact force. A protrusion 520 is provided on the surface of the support plate 51 facing the mounting member 21, a first groove 410 is provided on the swing arm 41, and a second groove 210 is provided on the mounting member 21. When the foldable electronic device 1000 is in a folded state, the swing arm 41 is located between the support plate 51 and the mounting member 21, the first groove 410 and the second groove 210 are connected, and the protrusion 520 extends into the first groove 410 and the second groove 210. Then, one end of the protrusion 520 faces the inner wall surface of the first groove 410, and the other end of the protrusion 520 faces the inner wall surface of the second groove 210. When the foldable electronic device 1000 is in a folded state and the support base 10 is subjected to an external impact force, the housing 1200 and the carrier plate 51 slide downward relative to the support base 10. One end of the protrusion 520 abuts against the inner wall surface of the first groove 410, and the other end of the protrusion 520 abuts against the inner wall surface of the second groove 210, thereby supporting the housing 1200 and preventing the housing 1200 from driving the first display part 1310 and the second display part 1320 to move downward, thus avoiding the display screen 1300 being squeezed.

[0194] However, in this related technology, the support plate 51 is mainly used to support the display screen 1300 to ensure that the display screen 1300 can be flattened when the foldable electronic device 1000 is in the unfolded state. When the foldable electronic device 1000 is in the folded state, the support plate 51 is used to enclose the space containing the screen. Therefore, when the foldable electronic device 1000 switches between the unfolded and folded states, the space occupied by the support plate 51 and the rotation angle are mainly designed according to the state of the display screen 1300, and the rotation angle that the support plate 51 can rotate is relatively limited.

[0195] When the protrusion 520 on the support plate 51 is provided to also support the housing 1200, the overlap between the protrusion 520 and the inner wall of the first groove 410 is small due to space and rotation angle limitations of the support plate 51. Therefore, if the foldable electronic device 1000 is in a folded state and the support base 10 is subjected to external impact, the protrusion 520 may slide down from the inner wall of the first groove 410. At this time, the support plate 51 loses its support, and correspondingly, the housing 1200 supported by the support plate 51 also loses its support. Naturally, the housing 1200 will cause the first display part 1310 and the second display part 1320 to slide downward, thereby causing the display screen 1300 to be squeezed.

[0196] To increase the overlap between the protrusion 520 and the first groove 410, the width of the gap between the protrusion 520 and the first groove 410 needs to be increased. This means that when the foldable electronic device 1000 is subjected to external impact, the downward sliding distance of the support plate 51 and the housing 1200 increases. This causes the first display unit 1310 and the second display unit 1320 to slide downwards a greater distance, resulting in wrinkles at the connection between the first display unit 1310 and the third display unit 1330. Ultimately, this could lead to the failure of the display screen 1300.

[0197] Furthermore, since the protrusion 520 is located on the surface of the support plate 51 facing the mounting member 21, the protrusion 520 needs to extend a certain thickness away from the support plate 51 to cooperate with the swing arm 41. This results in a portion of the protrusion 520 extending out of the first groove 410 and the second groove 210 when the foldable electronic device 1000 is in a folded state. Consequently, the center of gravity of the protrusion 520 is completely misaligned with the center surface of the inner wall of the first groove 410. When the support base 10 is subjected to external impact, the protrusion 520 is prone to detach from the swing arm 41, affecting the stability of the housing 1200. This leads to the housing 1200 easily sliding downwards, ultimately causing the display screen 1300 to be squeezed.

[0198] In this embodiment, a separate stop arm 61 is provided. The rotation angle of the stop arm 61 can be flexibly set and is not limited by the state of the display screen 1300. When the foldable electronic device 1000 is in the unfolded state, the stop arm 61 is tilted at a large angle relative to the swing arm 41. When the foldable electronic device 1000 switches from the unfolded state to the folded state, the rotation angle of the stop arm 61 is greater than the rotation angle of the support plate 51. Specifically, the stop arm 61 can rotate to be parallel to the first stop surface 62 and the reference surface, that is, the difference between the rotation angle of the stop arm 61 and the rotation angle of the support plate 51 is angle α. Therefore, the overlap amount between the first stop surface 62 of the stop arm 61 and the first abutment surface 263 of the swing arm 41 can be flexibly designed, and the overlap amount between the second stop surface 63 and the second abutment surface 463 can also be flexibly designed. It is understandable that the greater the overlap between the first stop surface 62 and the first abutment surface 263, and the greater the overlap between the second stop surface 63 and the second abutment surface 463, the greater the supporting force on the housing 1200, and the lower the risk of the housing 1200 sliding downwards. The overlap between the first stop surface 62 and the first abutment surface 263 refers to the size of the contact area between the two surfaces. The larger the contact area, the greater the overlap. Conversely, the smaller the contact area, the smaller the overlap. The overlap between the second stop surface 63 and the second abutment surface 463 is similar and will not be elaborated further.

[0199] In this embodiment of the application, the overlap between the first stop surface 62 and the first abutting surface 263 is greater than 0.11 mm. The overlap can specifically be 0.12 mm, 0.14 mm, 0.16 mm, 0.2 mm, 0.25 mm, 0.30 mm, 0.31 mm, 0.32 mm, 0.33 mm, 0.34 mm, 0.36 mm, 0.38 mm, 0.40 mm, 0.42 mm, 0.45 mm, 0.50 mm, 0.55 mm, 0.60 mm, 0.65 mm, 0.75 mm, 0.85 mm, or 1.0 mm, etc.

[0200] In this embodiment, the stop arm 61 is separately provided. Furthermore, when the foldable electronic device 1000 switches from an unfolded state to a folded state, the rotation angle of the stop arm 61 is greater than the rotation angle of the support plate 51. This results in the overlap between the first stop surface 62 and the first abutment surface 263 when the foldable electronic device 1000 is in a folded state and the support base 10 is subjected to an external impact force. This overlap is greater than the overlap between the inner wall surface of the protrusion 520 and the first groove 410 in the prior art shown in FIG. 35. Of course, the above comparison results are based on the following premise: the width of the gap h1 in this embodiment and the gap between the inner wall surface of the protrusion 520 and the first groove 410 in the related art shown in FIG. 35 are the same. For example, when the gap h1 in the embodiment of this application and the gap between the inner wall surface of the protrusion 520 and the first groove 410 in the related art shown in FIG35 are both about 0.35mm, the overlap of the first stop surface 62 and the first abutment surface 263 in the embodiment of this application is 0.38mm, while the overlap of the inner wall surface of the protrusion 520 and the first groove 410 in the related art shown in FIG35 is 0.11mm.

[0201] Furthermore, in this embodiment, the orthographic projection of the first abutment surface 263 onto the reference surface completely covers the orthographic projection of the first stop surface 62 onto the reference surface. Alternatively, the orthographic projections of the first abutment surface 263 and the first stop surface 62 onto the reference surface completely coincide. And by aligning the center surfaces of the first stop surface 62 and the first abutment surface 263, the overlap between the first stop surface 62 and the first abutment surface 263 is further increased.

[0202] Similarly, by setting the orthographic projection of the second abutment surface 463 onto the reference surface to completely cover the orthographic projection of the second stop surface 63 onto the reference surface, or by setting the orthographic projections of the second abutment surface 463 and the second stop surface 63 onto the reference surface to completely coincide, and by setting the center surfaces of the second stop surface 63 and the second abutment surface 463 to coincide, the overlap between the second stop surface 63 and the second abutment surface 463 is further increased. This, in turn, increases the stability of the housing 1200.

[0203] Furthermore, in this embodiment, by ensuring that the orthographic projections of the first abutment surface 263, the second abutment surface 463, the first stop surface 62, and the second stop surface 63 on the reference plane are completely coincident, and the entire stop body 64 is located within the first notch 25 and the second notch 46, thereby ensuring that the entire stop body 64 is located between the first abutment surface 263 and the second abutment surface 463, and by ensuring that the center planes of the first abutment surface 263, the second abutment surface 463, the first stop surface 62, and the second stop surface 63 coincide, and that the center of gravity of the stop arm 61 can be located on the center plane L, the stability of the housing 1200 is further increased.

[0204] Furthermore, since the stop arm 61 is a separate component and does not need to be fixed to components such as the support plate 51, the thickness of the stop arm 61 is uniform. Also, when the foldable electronic device 1000 is in the folded state, almost all parts of the stop arm 61 are located between the first abutment surface 263 and the second abutment surface 463, so that the center of gravity of the stop arm 61 is located between the first abutment surface 263 and the second abutment surface 463, which increases the stability of the stop arm 61 and thus increases the stability of the housing 1200.

[0205] To reduce the overall weight, the support plate 51 is usually made of lightweight materials such as aluminum alloy or carbon fiber. In the related technology shown in Figure 34, the bump 520 and the support plate 51 are integrally formed, so the bump 520 is also made of lightweight materials such as aluminum alloy or carbon fiber. This results in the bump 520 being weak. When the foldable electronic device is subjected to external impact, the bump 520 is easily deformed by the impact, which leads to the failure of the bump 520 to support the shell, and ultimately causes the display screen 1300 to be squeezed.

[0206] In this embodiment, the stop arm 61 is a separate component, and it can be made of high-strength materials such as stainless steel or bulletproof steel. That is, the yield strength of the stop arm 61 is greater than the yield strength of the bearing plate 51, which can prevent the stop arm 61 from deforming due to impact, so that the stop arm 61 can better support the housing 1200 and reduce the risk of display screen 1300 failure.

[0207] In addition, referring to Figures 36 and 37 in this embodiment, Figure 36 is another perspective of the cross-sectional view of Figure 29 along the MM direction, and Figure 37 is another state change diagram of the rotating mechanism 100 provided in the first embodiment of this application when it is in a folded state and subjected to an external impact force. Figure 37(a) shows the state before being subjected to an impact force. Figure 37(b) shows the state after being subjected to an impact force. When the foldable electronic device 1000 is in a folded state and the support base 10 is subjected to an external impact force, the housing 1200, the mounting member 21, and the support plate 51 will slide downward relative to the swing arm 41. When the mounting member 21 and the support plate 51 slide downward, the first limiting surface 521 gradually abuts against the first support surface 271, and the second limiting surface 510 gradually abuts against the second support surface 48.

[0208] When the first limiting surface 521 and the first supporting surface 271 abut, and the second limiting surface 510 and the second supporting surface 48 abut, the housing 1200, the mounting part 21, and the support plate 51 all stop sliding down, and the housing 1200, the mounting part 21, the support plate 51, the swing arm 41, and the support base 10 are relatively fixed. The downward sliding distance of the support plate 51 is equal to the width of the gap h2, and the downward sliding distance of the housing 1200 and the mounting part 21 is equal to the sum of the widths of the gaps h2 and h3. Both gaps h2 and h3 are very small, therefore, the downward movement distance of the first display part 1310 and the second display part 1320 is very small, which can prevent wrinkles or even breakage at the connection between the first display part 1310 and the third display part 1330, and can also prevent wrinkles or even breakage at the connection between the second display part 1320 and the third display part 1330, that is, prevent the display screen 1300 from being squeezed. In addition, it can prevent the entire display screen 1300 from failing.

[0209] In addition, the impact force of the support base 10 can be transmitted to the housing 1200 in sequence through the swing arm 41, the bearing plate 51 and the mounting part 21, forming an effective force transmission path between the support base 10, the swing arm 41, the bearing plate 51, the mounting part 21 and the housing 1200. This effective force transmission path can disperse the impact force to the support base 10, the swing arm 41, the bearing plate 51, the mounting part 21 and the housing 1200, thereby reducing the stress on the support base 10 and preventing damage to the support base 10.

[0210] When the support base 10 is subjected to an external impact, such as when the foldable electronic device 1000 falls to the ground, and the support base 10 touches the ground, the second limiting surface 510 first contacts the second support surface 48. At this time, the support base 10, the swing arm 41, and the support plate 51 are relatively fixed. Then, the first support surface 271 contacts the first limiting surface 521. Because the support base 10, the swing arm 41, and the support plate 51 have already formed a whole, when the housing 1200 and the mounting component 21 move downward, the mounting component 21 will touch the support plate 51. The impact force of the housing 1200 and the mounting component 21 on the support plate 51 can be instantly transmitted to the support base 10 through the swing arm 41, thereby stopping the first housing 1210 from moving. To prevent the impact force from not being transmitted to the swing arm 41 and the support base 10, thus causing the impact force of the housing 1200 and the mounting component 21 to act entirely on the support plate 51, damage to the support plate 51 can be prevented.

[0211] Of course, it is understandable that if the first housing 1210 and the second housing 1220 are folded relative to each other, and the support base 10 is not subjected to external impact, the first limiting surface 521 is already in contact with the first support surface 271, and the second limiting surface 510 is already in contact with the second support surface 48. Then, after the support base 10 is subjected to external impact, the housing 1200, the mounting component 21, and the bearing plate 51 will tend to move downwards. However, the support base 10, the swing arm 41, and the bearing plate 51 are relatively fixed and have become a whole, forming an effective force transmission path. Therefore, the housing 1200 will not move downwards, thereby preventing the display screen 1300 from being squeezed.

[0212] By setting the first support surface 271 and the first limiting surface 521 to cooperate, and setting the second support surface 48 and the second limiting surface 510 to cooperate, the supporting force on the housing 1200 is further increased, and the risk of the housing 1200 sliding downward is reduced.

[0213] In this embodiment, referring to FIG38, FIG38 is a partial structural schematic diagram of the rotating mechanism 100 shown in FIG18. The foldable electronic device 1000 also needs to rely on the synchronization component 70 to achieve synchronous operation of the first housing 1210 and the second housing 1220, and needs to rely on the damping component 80 to provide damping force for the operation of the first housing 1210 and the second housing 1220. Specifically, the synchronization component 70 includes two synchronization gears 71, and the damping component 80 includes concave cams, two main elastic members 83, and two pushing members 84. The concave cams include two first concave cams 81 and two second concave cams 82. The two first concave cams 81 are fixedly connected, and the two second concave cams 82 are fixedly connected. The two pushing members 84 are fixedly connected.

[0214] The synchronization component 70 needs to cooperate with the swing arm 41 to achieve synchronization. Specifically, the two rotating parts of the swing arm 41 are a first rotating part 44 and a second rotating part 45, which are spaced apart from each other along the Y-axis. Both the first swing arm 41a and the second swing arm 41b are provided with concave and convex portions. Specifically, the end of the first rotating part 44 opposite to the second rotating part 45 is provided with a first concave and convex portion 441, and the end of the second rotating part 45 opposite to the first rotating part 44 is provided with a second concave and convex portion 451. The outer peripheral surface of the first rotating part 44 in the first swing arm 41a is provided with a first driving tooth 442, and the outer peripheral surface of the first rotating part 44 in the second swing arm 41b is provided with a second driving tooth 443.

[0215] The first rotating part 44 and the second rotating part 45 of the first swing arm 41a are both sleeved on the first mounting shaft 17, and both the first rotating part 44 and the second rotating part 45 can rotate axially around the first mounting shaft 17. The first rotating part 44 and the second rotating part 45 of the second swing arm 41b are both sleeved on the second mounting shaft 18. Along the X-axis, two synchronous gears 71 are located between the first rotating part 44 of the first swing arm 41a and the first rotating part 44 of the second swing arm 41b, and the first driving gear 442, the synchronous gear 71 and the second driving gear 443 mesh sequentially.

[0216] Each concave cam has a mating concave-convex portion. Specifically, the first concave cam 81 has a first mating concave-convex portion 85, and the second concave cam 82 has a second mating concave-convex portion 86. The first concave cam 81, the second concave cam 82, the main elastic element 83, and the pushing element 84 are all disposed within the receiving groove 13 of the support base 10. The two first concave cams 81 are respectively sleeved on the first mounting shaft 17 and the second mounting shaft 18, the two second concave cams 82 are respectively sleeved on the first mounting shaft 17 and the second mounting shaft 18, the two main elastic elements 83 are respectively sleeved on the first mounting shaft 17 and the second mounting shaft 18, and the two pushing elements 84 are respectively sleeved on the first mounting shaft 17 and the second mounting shaft 18. The first concave cam 81 is located on the side of the first rotating part 44 opposite to the second rotating part 45, the pushing element 84 is located on the side of the first concave cam 81 opposite to the first rotating part 44, and the main elastic element 83 abuts between the first concave cam 81 and the pushing element 84, and the main elastic element 83 is in a pre-compressed state. The first concave-convex portion 441 and the first mating concave-convex portion 85 are mated, and the second concave-convex portion 451 and the second mating concave-convex portion 86 are mated.

[0217] When the foldable electronic device 1000 switches between a folded state and an unfolded state, both the first housing 1210 and the second housing 1220 rotate relative to the support base 10. The main sliding portions 33 of both the first main swing arm 31a and the second main swing arm 31b slide and rotate relative to the support base 10. The first main swing arm 31a rotates relative to the first mounting member 21a, and the main rotating portion 32 of the second main swing arm 31b rotates relative to the second mounting member 21b. The first rotating portion 44 and the second rotating portion 45 of the first swing arm 41a rotate relative to the support base 10, and the secondary sliding portion 43 of the first swing arm 41a slides relative to the first mounting member 21a. The first rotating part 44 and the second rotating part 45 of the second swing arm 41b rotate relative to the support base 10, and the secondary sliding part 43 of the second swing arm 41b slides relative to the second mounting member 21b. The first driving gear 442, the synchronous gear 71 and the second driving gear 443 mesh and drive each other, so that the first swing arm 41a and the second swing arm 41b rotate synchronously, thereby realizing the synchronous rotation of the first housing 1210 and the second housing 1220.

[0218] When the foldable electronic device 1000 switches between a folded state and an unfolded state, both the first housing 1210 and the second housing 1220 rotate relative to the support base 10. The first rotating portion 44 and the second rotating portion 45 of the two swing arms 41 also rotate relative to the support base 10. The engagement state of the first protrusion 441 and the first mating protrusion 85 changes, as does the engagement state of the second protrusion 451 and the second mating protrusion 86. This causes the main elastic element 83 to be compressed or extended, thereby providing damping force to the first housing 1210 and the second housing 1220. The change in the engagement state of the first protrusion 441 and the first mating protrusion 85 means that, as the swing arm 41 rotates, the first protrusion 441 and the first mating protrusion 85 can switch between peak-valley engagement and peak-peak engagement. Peak-valley engagement means that the protrusion of the first protrusion 441 is located within the recess of the first mating protrusion 85, and the protrusion of the first mating protrusion 85 is located within the recess of the first protrusion 441. Peak-to-peak mating refers to the contact between the convex portion of the first concave-convex portion 441 and the convex portion of the first mating concave-convex portion 85. The change in the mating state of the second concave-convex portion 451 and the second mating concave-convex portion 86 is similar to the change in the mating state of the first concave-convex portion 441 and the first mating concave-convex portion 85, and will not be described in detail here.

[0219] The second embodiment of this application provides a rotating mechanism 100, which differs from the rotating mechanism 100 in the first embodiment described above in that the stop arm 61 and the mounting member 21 are slidably and rotatably connected, and the stop arm 61 and the bearing plate 51 are rotatably connected. Correspondingly, referring to Figures 39 and 40, Figure 39 is a structural schematic diagram of the mounting assembly 20 of the rotating mechanism 100 provided in the second embodiment of this application, and Figure 40 is a structural schematic diagram of the mounting assembly 20 shown in Figure 39 from another perspective. The inner wall surface of the mounting groove 28 on the mounting member 21 includes an arcuate surface 281 and a groove peripheral surface 282 opposite to each other along the X-axis direction, and the arcuate surface 281 includes a concave arcuate surface. The mounting groove 28 is used for slidable and rotatably connected with the stop assembly 60.

[0220] Referring to Figure 41, which is a structural schematic diagram of the bearing assembly 50 of the rotating mechanism 100 provided in the second embodiment of this application, the connecting hole 56 on the bearing plate 51 is a circular through hole, which is used for rotatable connection with the stop arm 61.

[0221] Referring to Figures 42 and 43, Figure 42 is a structural schematic diagram of the stop assembly 60 provided in the second embodiment of this application, and Figure 43 is a structural schematic diagram of the stop assembly 60 shown in Figure 42 from another perspective. The stop assembly 60 includes two stop swing arms 61, namely a first stop swing arm 61a and a second stop swing arm 61b. The outer contour of the stop swing arm 61 is approximately rectangular, and the stop swing arm 61 is provided with a first stop surface 62 and a second stop surface 63. Specifically, the stop swing arm 61 includes a stop body 64, a first connecting rod 65, and a second connecting rod 66. The first connecting rod 65 is used for movably connecting with the mounting member 21, and the second connecting rod 66 is used for movably connecting with the support plate 51. Specifically, the first connecting rod 65 is used for sliding and rotating connection with the mounting member 21, and the second connecting rod 66 is used for rotating connection with the support plate 51.

[0222] The stop body 64 is generally rectangular thin plate in shape. The length direction of the stop body 64 is parallel to the X-axis direction, and the width direction of the stop body 64 is parallel to the Y-axis direction. The stop body 64 includes a first surface 641, a second surface 642, a first stop surface 62, and a second stop surface 63. Along the thickness direction of the stop body 64, the first surface 641 and the second surface 642 are opposite to each other, and along the length direction of the stop body 64, the first stop surface 62 and the second stop surface 63 are opposite to each other. The first stop surface 62 includes a concave arc-shaped surface, and the first stop surface 62 is used to mate with the first abutment surface 263 on the mounting member 21.

[0223] The stop body 64 has a clearance notch 67, a first extension 68, and a second extension 69. The clearance notch 67 is recessed into the first surface 641 of the stop body 64. The first extension 68 protrudes from the first stop surface 62, and the width of the first extension 68 is smaller than the width of the stop body 64. There are two second extensions 69, both of which protrude from the first surface 641 and are located on either side of the clearance notch 67 along the width direction of the stop body 64. Each second extension 69 has an extension hole 691 that penetrates through the second extension 69 along the width direction of the stop body 64.

[0224] The first connecting rod 65 is connected to the side of the first extension 68 away from the stop body 64. It can be understood that the first connecting rod 65 can be fixed to the first extension 68. The two ends of the second connecting rod 66 are respectively connected to the extension holes 691 of the two second extensions 69. It can be understood that the second connecting rod 66 can rotate relative to the stop body 64. The middle part of the second connecting rod 66 is opposite to the clearance notch 67. The axial directions of both the first connecting rod 65 and the second connecting rod 66 are parallel to the Y-axis direction. The first connecting rod 65 is used to connect with the mounting groove 28 of the mounting member 21, and the second connecting rod 66 is used to connect with the connecting hole 56 of the bearing plate 51.

[0225] Referring to Figures 44 and 45, Figure 44 is a cross-sectional view of the rotating mechanism 100 provided in the second embodiment of this application in its unfolded state, and Figure 45 is another cross-sectional view of the rotating mechanism 100 provided in the second embodiment of this application in its unfolded state. One side of the stop arm 61 is movably connected to the mounting member 21, and the other side of the stop arm 61 is movably connected to the bearing plate 51. Specifically, the two stop arms 61 are slidably and rotatably connected to the two mounting members 21, and the two stop arms 61 are rotatably connected to the two bearing plates 51. That is, the first stop arm 61a is slidably and rotatably connected to the first mounting member 21a, and the first stop arm 61a is rotatably connected to the first bearing plate 51a. The second stop arm 61b is slidably and rotatably connected to the second mounting member 21b, and the second stop arm 61b is rotatably connected to the second bearing plate 51b. Specifically, the first extension 68 of the stop arm 61 extends into the connecting groove 27 of the mounting member 21. The first connecting rod 65 is slidably and rotatably connected to the mounting groove 28. The first connecting rod 65 of the stop arm 61 extends into the mounting groove 28 and can slide and rotate along the arcuate surface 281 of the mounting groove 28, so that the stop arm 61 is slidably and rotatably connected to the mounting member 21. The second extension 69 of the stop arm 61 extends into the receiving groove 55 of the support plate 51. The first protrusion 52 of the support plate 51 passes through the gap between the two second extensions 69 and extends into the clearance notch 67 of the stop arm 61. The second connecting rod 66 is rotatably connected to the connecting hole 56. The second connecting rod 66 passes through the connecting hole 56 of the first protrusion 52 and can rotate within the connecting hole 56, so that the stop arm 61 is rotatably connected to the support plate 51.

[0226] When the foldable electronic device 1000 is in the unfolded state, the stop arm 61 is tilted relative to the swing arm 41. At this time, the first stop surface 62 and the first abutment surface 263 are offset from each other, and the second stop surface 63 and the second abutment surface 463 are offset from each other.

[0227] Referring to Figure 46, which is a schematic diagram of the process of switching the rotating mechanism 100 from an unfolded state to a folded state according to the second embodiment of this application, when the foldable electronic device 1000 switches from an unfolded state to a folded state, the main swing arm 31 slides and rotates relative to the support base 10, and rotates relative to the mounting member 21. The swing arm 41 rotates relative to the support base 10, and slides and rotates relative to the mounting member 21. The support plate 51 slides and rotates relative to the mounting member 21, and slides and rotates relative to the main swing arm 31. The stop swing arm 61 slides and rotates relative to the mounting member 21, and rotates relative to the support plate 51. Specifically, the first connecting rod 65 of the stop swing arm 61 slides and rotates in the mounting groove 28, and the second connecting rod 66 of the stop swing arm 61 rotates in the connecting hole 56. The first stop surface 62 of the stop swing arm 61 moves along the first abutting surface 263 of the mounting member 21. The inclination of the stop arm 61 relative to the mounting member 21 gradually decreases, and the stop body 64 of the stop arm 61 gradually extends into the first notch 25 of the mounting member 21 and the second notch 46 of the swing arm 41.

[0228] When the foldable electronic device 1000 switches between a folded state and an unfolded state, the first connecting rod 65 slides and rotates within the mounting slot 28, causing the stop arm 61 to rotate relative to the mounting member 21 while also generating relative displacement with the mounting member 21. The second connecting rod 66 rotates only relative to the support plate 51, and there is no relative displacement between the stop arm 61 and the support plate 51. This allows the stop arm 61 to move with the unfolding and folding of the rotating mechanism 100, preventing the stop arm 61 from interfering with the normal operation of the rotating mechanism 100.

[0229] Referring to Figures 47, 48, and 49, Figure 47 is a structural schematic diagram of the rotating mechanism 100 in a folded state according to the second embodiment of this application; Figure 48 is a cross-sectional structural schematic diagram of the rotating mechanism 100 in a folded state according to the second embodiment of this application; and Figure 49 is another perspective of the cross-sectional structural schematic diagram of the rotating mechanism 100 shown in Figure 48. When the foldable electronic device 1000 is in a folded state, along the X-axis direction, the stop body 64 of the stop arm 61 is located between the first abutment surface 263 and the second abutment surface 463. The first stop surface 62 and the first abutment surface 263 are opposite to each other, and this opposition includes both contact and a gap. In this embodiment, the first stop surface 62 and the first abutment surface 263 are in contact, as an example. The second stop surface 63 and the second abutment surface 463 are opposite to each other, and this opposition includes both contact and a gap. In this embodiment, the second stop surface 63 and the second abutment surface 463 have a gap h1 between them, as an example.

[0230] Referring to Figure 50, Figure 50 is a diagram showing the state changes of the rotating mechanism 100 provided in the second embodiment of this application when it is in a folded state and subjected to an external impact force. Figure 50(a) shows the state of the rotating mechanism 100 of the foldable electronic device 1000 when it is not subjected to an external impact force, and Figure 50(b) shows the state of the rotating mechanism 100 of the foldable electronic device 1000 when it is subjected to an external impact force. When the foldable electronic device 1000 is in a folded state and the support base 10 is subjected to an external impact force, the swing arm 41 is supported by the mounting shaft and will not slide downward. The first stop surface 62 and the first abutment surface 263 are in contact, and there is a gap h1 between the second stop surface 63 and the second abutment surface 463. The housing 1200, the mounting member 21 and the stop swing arm 61 will slide downward relative to the swing arm 41, and the width of the gap between the second stop surface 63 and the second abutment surface 463 gradually decreases until the second stop surface 63 and the second abutment surface 463 abut. The first stop surface 62 and the first abutting surface 263 abut against each other, and the second stop surface 63 and the second abutting surface 463 abut against each other, which can prevent the mounting member 21 from continuing to slide downward, thereby preventing the display screen 1300 from being squeezed and preventing the display screen 1300 from malfunctioning. In addition, the impact force of the support base 10 can be transmitted to the housing 1200, thereby reducing the stress on the support base 10 and preventing damage to the support base 10.

[0231] In addition, in this embodiment, when the foldable electronic device 1000 is in a folded state, the relationship between the center surfaces of the first abutment surface 263, the second abutment surface 463, the first stop surface 62, and the second stop surface 63 along the X-axis direction is the same as in the first embodiment described above. The position of the center of gravity of the stop arm 61 is also the same as in the first embodiment described above, and will not be repeated here.

[0232] Referring to Figure 51, which is a cross-sectional view of the rotating mechanism 100 in a folded state according to the second embodiment of this application, when the foldable electronic device 1000 is in a folded state, as in the above embodiment, there is a gap between the first support surface 271 and the first limiting surface 521, and a gap between the second support surface 48 and the second limiting surface 510. When the foldable electronic device 1000 is in a folded state and the support base 10 is subjected to an external impact force, the first limiting surface 521 gradually abuts against the first support surface 271, and the second limiting surface 510 gradually abuts against the second support surface 48. This further increases the supporting force on the housing 1200, reduces the risk of the housing 1200 sliding downward, and further reduces the risk of the display screen 1300 being squeezed.

[0233] The third embodiment of this application provides a rotating mechanism 100, which differs from the first embodiment in that the stop arm 61 and the bearing plate 51 are slidably and rotatably connected, and the stop arm 61 and the swing arm 41 are rotatably connected. Referring to Figures 52 and 53, Figure 52 is a structural schematic diagram of the mounting assembly 20 of the rotating mechanism 100 provided in the third embodiment of this application, and Figure 53 is a structural schematic diagram of the mounting assembly 20 shown in Figure 39 from another perspective. The connecting protrusion 26 of the mounting member 21 is only provided with a connecting groove 27, which is recessed in the first abutment surface 263 and penetrates the top surface 261. The inner wall surface of the connecting groove 27 forms a first support surface 271.

[0234] Referring to Figure 54, which is a structural schematic diagram of the support component 50 of the rotating mechanism 100 provided in the third embodiment of this application, the first protrusion 52 of the support member is provided with a connecting hole 56. The connecting hole 56 is an oblong hole, and the long axis of the oblong hole is inclined relative to the X-axis direction. The connecting hole 56 is used for sliding and rotating connection with the stop arm 61. In this embodiment, the length of the connecting hole 56 is greater than the length of the connecting hole 56 in the first embodiment. The reason is that when the foldable electronic device 1000 switches between the unfolded state and the folded state, the relative movement of the support plate 51 and the mounting member 21 in the X-axis direction is small, while the relative movement of the swing arm 41 and the support plate 51 in the X-axis direction is large. In the first embodiment, the stop arm 61 is connected to the support plate 51 and the mounting member 21 respectively. Under the influence of the relative movement of the support plate 51 and the mounting member 21, the movement of the stop arm 61 relative to the support plate 51 is small. In this embodiment, the stop arm 61 is connected to the bearing plate 51 and the swing arm 41 respectively. Under the influence of the relative movement of the bearing plate 51 and the swing arm 41, the movement of the stop arm 61 relative to the bearing plate 51 is relatively large. Therefore, the length of the connecting hole 56 in this embodiment needs to be greater than the length of the connecting hole 56 in the first embodiment.

[0235] Referring to Figures 55 and 56, Figure 55 is a structural schematic diagram of the second swing arm assembly 40 of the rotating mechanism 100 provided in the third embodiment of this application, and Figure 56 is a structural schematic diagram of the second swing arm assembly 40 shown in Figure 55 from another perspective. Similar to the first embodiment, the swing arm 41 includes a secondary sliding portion 43 and a secondary rotating portion 42. The swing arm 41 is provided with a second notch 46, and a portion of the inner wall surface of the second notch 46 is a second abutting surface 463, which includes a convex arc-shaped surface. The difference between the swing arm 41 in the first embodiment and the second embodiment is that, in this embodiment, the swing arm 41 is provided with a connecting groove 27 and a mounting groove 28. The mounting groove 28 is recessed in the bottom surface of the secondary sliding portion 43, and the connecting groove 27 is recessed in the second abutting surface 463 and penetrates through the bottom surface of the secondary sliding portion 43. Along the X-axis direction, the second notch 46, the connecting groove 27, and the mounting groove 28 are connected in sequence. The mounting groove 28 is connected to the second notch 46 through the connecting groove 27, and is used to connect with the stop swing arm 61.

[0236] In this embodiment, referring to Figures 57 and 58, Figure 57 is a structural schematic diagram of the stop assembly 60 provided in the third embodiment of this application, and Figure 58 is a structural schematic diagram of the stop assembly 60 shown in Figure 57 from another perspective. The stop assembly 60 includes two stop swing arms 61, namely a first stop swing arm 61a and a second stop swing arm 61b. The stop swing arms 61 are provided with a first stop surface 62 and a second stop surface 63. Specifically, the stop swing arm 61 includes a stop body 64, a first connecting rod 65 and a second connecting rod 66. The structure of the stop body 64 is similar to that in the first embodiment, and the stop body 64 includes a first surface 641, a second surface 642, a first stop surface 62 and a second stop surface 63. The second stop surface 63 includes a concave arc-shaped surface.

[0237] The stop body 64 has a clearance notch 67, a first extension 68, and a second extension 69. The clearance notch 67 penetrates the first surface 641 and the second surface 642, and also penetrates the first stop surface 62. The first extension 68 protrudes from the second stop surface 63. There are two second extensions 69, both of which protrude from the first surface 641 and are spaced apart along the X-axis. Each second extension 69 has an extension hole 691. A first connecting rod 65 is fixed to the side of the first extension 68 away from the second stop surface 63. The two ends of the second connecting rod 65 are respectively connected to the extension holes 691 of the two second extensions 69.

[0238] Referring to Figures 59 and 60, Figure 59 is a cross-sectional view of the rotating mechanism 100 provided in the third embodiment of this application in its unfolded state, and Figure 60 is another cross-sectional view of the rotating mechanism 100 provided in the third embodiment of this application in its unfolded state. One side of the stop arm 61 is movably connected to the swing arm 41, and the other side of the stop arm 61 is movably connected to the support plate 51. Specifically, the two stop arms 61 are rotatably connected to the two swing arms 41, and the two stop arms 61 are slidably and rotatably connected to the two support plates 51. That is, the first stop arm 61a is rotatably connected to the first swing arm 41a, and the first stop arm 61a is slidably and rotatably connected to the first support plate 51a. The second stop arm 61b is rotatably connected to the second swing arm 41b, and the second stop arm 61b is slidably and rotatably connected to the second support plate 51b. Specifically, the first extension 68 of the stop arm 61 extends into the connecting groove 27 of the swing arm 41, and the first connecting rod 65 of the stop arm 61 extends into the mounting groove 28. The first connecting rod 65 can rotate along the arcuate surface 281 of the mounting groove 28, so that the stop arm 61 is rotatably connected to the swing arm 41. The first protrusion 52 of the support plate 51 passes through the gap between the two second extensions 69 and extends into the clearance notch 67 of the stop arm 61. The second connecting rod 66 passes through the connecting hole 56 of the first protrusion 52, and the second connecting rod 66 can slide and rotate within the connecting hole 56, so that the stop arm 61 is slidably and rotatably connected to the support plate 51. In addition, the second stop surface 63 of the stop arm 61 contacts the second abutting surface 463 of the swing arm 41. When the stop arm 61 rotates relative to the swing arm 41, the second stop surface 63 moves along the second abutting surface 463 to guide the movement of the stop arm 61, making the stop arm 61 run more smoothly.

[0239] When the foldable electronic device 1000 is in the unfolded state, the stop arm 61 is tilted relative to the swing arm 41. At this time, the first stop surface 62 and the first abutment surface 263 are offset from each other, while the second stop surface 63 and the second abutment surface 463 are in contact with each other.

[0240] Referring to Figures 61 and 62, Figure 61 is a schematic diagram of the process of the rotating mechanism 100 provided in the third embodiment of this application switching from an unfolded state to a folded state, and Figure 62 is a cross-sectional schematic diagram of the rotating mechanism 100 provided in the third embodiment of this application in a semi-unfolded state. When the foldable electronic device 1000 switches from an unfolded state to a folded state, the stop arm 61 rotates relative to the swing arm 41, and the stop arm 61 slides and rotates relative to the support plate 51. Specifically, the first connecting rod 65 of the stop arm 61 rotates within the mounting groove 28 of the swing arm 41, and the second connecting rod 66 of the stop arm 61 slides and rotates within the connecting hole 56 of the support plate 51. The distance between the first stop surface 62 and the first abutment surface 263 gradually decreases, and the second stop surface 63 of the stop arm 61 moves along the second abutment surface 463 of the swing arm 41. The inclination of the stop arm 61 relative to the swing arm 41 gradually decreases, and the stop body 64 of the stop arm 61 gradually extends into the first notch 25 of the mounting part 21 and the second notch 46 of the swing arm 41.

[0241] When the foldable electronic device 1000 switches between its unfolded and folded states, the first connecting rod 65 can rotate within the mounting slot 28. At this time, the swing arm 41 moves, which in turn moves the stop swing arm 61. The second connecting rod 66 can slide and rotate within the connecting hole 56, meaning the stop swing arm 61 can rotate relative to the support plate 51 while also experiencing relative displacement with it. The movement of the support plate 51 then moves the stop swing arm 61. This allows the stop swing arm 61 to support the housing 1200 while preventing it from interfering with the normal operation of the rotating mechanism 100.

[0242] Referring to Figures 63, 64, and 65, Figure 63 is a structural schematic diagram of the rotating mechanism 100 in a folded state according to the third embodiment of this application; Figure 64 is a cross-sectional structural schematic diagram of the rotating mechanism 100 in a folded state according to the third embodiment of this application; and Figure 65 is another perspective of the cross-sectional structural schematic diagram of the rotating mechanism 100 shown in Figure 64. When the foldable electronic device 1000 is in a folded state, the stop body 64 of the stop arm 61 is located within the first notch 25 of the mounting member 21 and the second notch 46 of the swing arm 41. Along the X-axis direction, the stop body 64 of the stop arm 61 is located between the first abutment surface 263 and the second abutment surface 463. The first stop surface 62 and the first abutment surface 263 are opposite to each other. Here, "opposite" can be understood as follows: along the direction from the support base 10 to the mounting member 21, that is, along the X-axis direction, the orthographic projection of the first stop surface 62 on the mounting member 21 is at least partially located on the first abutment surface 263. Furthermore, the first abutment surface 263 and the first stop surface 62 are in direct contact, or there is a gap between the first stop surface 62 and the first abutment surface 263. It is understood that, typically due to assembly and processing errors, there is a gap h between the first stop surface 62 and the first abutment surface 263. The second stop surface 63 is in contact with the second abutment surface 463.

[0243] Referring to Figure 66, Figure 66 is a diagram showing the state changes of the rotating mechanism 100 provided in the third embodiment of this application when it is in a folded state and subjected to an external impact force. Figure 66(a) shows the state of the foldable electronic device 1000 before it is subjected to an impact force. Figure 66(b) shows the state of the foldable electronic device 1000 after it is subjected to an impact force. When the foldable electronic device 1000 is in a folded state and the support base 10 is subjected to an external impact force, the swing arm 41 is supported by the mounting shaft and will not slide downward. Since there is a gap h between the first stop surface 62 and the first abutment surface 263, and the second stop surface 63 and the first abutment surface 263 are already in contact, the housing 1200 and the mounting member 21 will slide downward relative to the swing arm 41, and the width of the gap between the first stop surface 62 and the first abutment surface 263 will gradually decrease until the first stop surface 62 and the first abutment surface 263 come into contact. The first stop surface 62 and the first abutting surface 263 abut against each other, and the second stop surface 63 and the second abutting surface 463 abut against each other, which can prevent the mounting member 21 from continuing to slide downward, thereby preventing the display screen 1300 from being squeezed and preventing the display screen 1300 from malfunctioning. In addition, the impact force of the support base 10 can be transmitted to the housing 1200, thereby reducing the stress on the support base 10 and preventing damage to the support base 10.

[0244] In this embodiment, when the foldable electronic device 1000 is in a folded state, the relationship between the center surfaces of the first abutment surface 263, the second abutment surface 463, the first stop surface 62, and the second stop surface 63 along the X-axis direction is the same as in the first embodiment described above. The position of the center of gravity of the stop arm 61 is also the same as in the first embodiment described above, and will not be repeated here.

[0245] Referring to Figures 67 and 68, Figure 67 is a cross-sectional view of the rotating mechanism 100 in a folded state according to the third embodiment of this application, and Figure 68 is another view of the cross-sectional view of the rotating mechanism 100 shown in Figure 67. When the foldable electronic device 1000 is in a folded state, as in the above embodiment, there is a gap between the first support surface 271 and the first limiting surface 521, and a gap between the second support surface 48 and the second limiting surface 510. When the foldable electronic device 1000 is in a folded state and the support base 10 is subjected to an external impact force, the first limiting surface 521 gradually abuts against the first support surface 271, and the second limiting surface 510 gradually abuts against the second support surface 48. This further increases the supporting force on the housing 1200, reduces the risk of the housing 1200 sliding downwards, and further reduces the risk of the display screen 1300 being squeezed.

[0246] The above are merely some embodiments and implementation methods of this application. 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 scope of the technology 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

1. A rotating mechanism, characterized by comprising: The rotating mechanism comprises an unfolded state and a folded state, when the rotating mechanism is in the folded state, the first stop surface and the first abutting surface are opposite, and the second stop surface and the second abutting surface are opposite. The mounting member is provided with a first notch, and the first abutting surface comprises an inner wall surface of the first notch; the swing arm is provided with a second notch, and the second abutting surface comprises an inner wall surface of the second notch; the first stop surface and the second stop surface are located on opposite sides of the stop swing arm. When the rotating mechanism is in the folded state, the opening of the first notch and the opening of the second notch are opposite, and the first abutting surface and the second abutting surface are spaced opposite; at least part of the stop swing arm is located in the first notch and the second notch, and at least part of the stop swing arm is located between the first abutting surface and the second abutting surface, so that the first stop surface and the first abutting surface are opposite, and the second stop surface and The second abutting surface is opposite. The stop swing arm comprises a stop body, a first connecting rod and a second connecting rod; the first connecting rod and the second connecting rod are arranged on the stop body in a spaced manner; the first connecting rod is movably connected to the mounting member or the swing arm, and the second connecting rod is movably connected to the carrying plate; the first stop surface and the second stop surface are arranged on opposite sides of the stop body. All of the stop body is located between the first abutting surface and the second abutting surface. The stop swing arm further comprises a first extension, the first extension is fixed to the first stop surface, and the first connecting rod is connected to one side of the first extension away from the first stop surface; In the thickness direction of the rotating mechanism, the carrying plate is laminated on the mounting member; one side of the mounting member away from the carrying plate is provided with a mounting groove; the mounting groove and the first notch are communicated; the first extension extends to the mounting groove, and the first connecting rod is movably connected to the mounting groove.

2. The swivel mechanism of claim 1, wherein The first connecting rod is rotatably connected to the mounting groove, and the second connecting rod is movably and rotatably connected to the carrying plate. The first stop surface comprises a concave arc surface, and the first abutting surface comprises a convex arc surface; when the rotating mechanism is switched between the unfolded state and the folded state, the first connecting rod rotates in the mounting groove, and the concave arc surface moves along the convex arc surface.

3. The swivel mechanism of claim 2, wherein, The first connecting rod is movably and rotatably connected to the mounting groove, and the second connecting rod is rotatably connected to the carrying plate.

4. The swivel mechanism of claim 3, wherein ​ 5. A swivel mechanism according to claim 3 or 4, characterized in that ​ ​ 6. The swivel mechanism of claim 5, wherein, ​ 7. The swivel mechanism of claim 6, wherein, ​ 8. The swivel mechanism of claim 5, wherein, ​ 9. A swivel mechanism according to claim 3 or 4, characterized in that The stop body further comprises a first extension part fixed to the second stop surface, and the first connecting rod is connected to one side of the first extension part away from the second stop surface; In the thickness direction of the rotating mechanism, the bearing plate is laminated to the mounting piece, and a part of the swing arm is located between the bearing plate and the mounting piece; one side of the swing arm away from the bearing plate is provided with a mounting groove; the mounting groove and the second notch are communicated; the first extension part extends to the mounting groove, and the first connecting rod is rotationally connected to the mounting groove.

10. The swivel mechanism of claim 9, wherein, The second stop surface comprises a concave arc surface, and the second stop surface comprises a convex arc surface; when the rotating mechanism is switched between the unfolded state and the folded state, the first connecting rod rotates in the mounting groove, and the concave arc surface moves along the convex arc surface.

11. A swivel mechanism according to claim 3 or 4, characterised in that The stop body is further provided with a first surface connected between the first stop surface and the second stop surface, and the first surface is provided with a second extension part; the second connecting rod is connected to the second extension part; In the thickness direction of the rotating mechanism, the bearing plate is laminated to the mounting part; one side of the bearing plate facing the mounting part is provided with a first protrusion provided with a connecting hole; the second extension part is located on one side of the stop body facing the bearing plate, and the second connecting rod is movably connected to the connecting hole.

12. The swivel mechanism of claim 11, wherein, The first connecting rod is rotationally connected to the mounting piece or the swing arm; the second connecting rod is slidingly and rotationally connected to the connecting hole.

13. The swivel mechanism of claim 11, wherein, The first connecting rod is slidingly and rotationally connected to the mounting piece, and the second connecting rod is rotationally connected to the connecting hole.

14. The swivel mechanism according to any one of claims 11 to 13, characterized in that The second extension part is two, and the two second extension parts are arranged at intervals; the two ends of the second connecting rod are respectively connected to the second extension parts, and a part of the second connecting rod is located in the interval between the two second extension parts; The first protrusion extends into the interval between the two second extension parts, and the part of the second connecting rod between the two second extension parts is movably connected to the connecting hole.

15. The swivel mechanism of claim 14, wherein, The stop body is further provided with an avoiding notch, and the avoiding notch is communicated with the interval between the two second extension parts; the first protrusion extends into the avoiding notch.

16. The swivel mechanism according to any one of claims 11 to 15, characterized in that The mounting piece is provided with a first supporting surface facing the first notch; the swing arm is provided with a supporting groove, and a part of the inner wall surface of the supporting groove forms a second supporting surface; the first protrusion is provided with a first limiting surface, and the bearing plate is provided with a second limiting surface; When the rotating mechanism is in the folded state, the first notch and the supporting groove are communicated, and the first supporting surface and the second supporting surface are opposite at intervals; the first protrusion extends into the first notch, and the bearing plate extends into the supporting groove; the first supporting surface and the first limiting surface are opposite, and the second supporting surface and the second limiting surface are opposite.

17. The swivel mechanism according to any one of claims 1 to 16, characterized in that The rotating mechanism further comprises a main swing arm rotationally connected to the mounting piece, and the main swing arm is slidingly and rotationally connected to the supporting base; the bearing plate is slidingly and rotationally connected to the main swing arm.

18. The rotating mechanism according to any one of claims 1-17, wherein: the mounting member is two, and the two mounting members are a first mounting member and a second mounting member, respectively, and the first mounting member and the second mounting member are located on two sides of the support base, respectively; the swing arm is two, and the two swing arms are a first swing arm and a second swing arm, respectively, and the first swing arm is rotatably connected to the support base and slidably and rotatably connected to the first mounting member, and the second swing arm is rotatably connected to the support base and slidably and rotatably connected the second mounting member; the bearing plate is two, and the two bearing plates are a first bearing plate and a second bearing plate, respectively, and the first bearing plate is slidably and rotatably connected to the first mounting member, and the second bearing plate is slidably and rotatably connected to the second mounting member; the stop swing arm is two, and the two stop swing arms are a first stop swing arm and a second stop swing arm, respectively, and one side of the first stop swing arm is movably connected to the first mounting member or the first swing arm, and the other side of the first stop swing arm is movably connected to the first mounting member, and one side of the second stop swing arm is movably connected to the second mounting member or the second swing arm, and the other side of the second stop swing arm is movably connected to the second mounting member.

19. The swivel mechanism according to any one of claims 1 to 18, characterized in that when the rotating mechanism is in a folded state, the first abutting surface completely covers the first stop surface in the projection of the reference surface; and / or, when the rotating mechanism is in a folded state, the second abutting surface completely covers the second stop surface in the projection of the reference surface, and the reference surface is perpendicular to the support base and points to the direction of the mounting member.

20. A foldable electronic device, characterized by The flexible screen and the rotating mechanism according to any one of claims 1-19 are included, and the flexible screen is located on one side of the rotating mechanism.

21. The foldable electronic device of claim 20, wherein, The foldable electronic device further includes two housings, and the rotating mechanism is arranged between the two housings and connected to the two housings, respectively, and the first housing and the second housing can be relatively rotated through the rotating mechanism.

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