Rotating shaft device and folding electronic device

Abstract

This disclosure relates to a hinge device and a foldable electronic device. The hinge device includes a substrate and a hinge assembly. The hinge assembly includes a first transmission component, a second transmission component, and a first support member. The first transmission component is rotatably connected to the substrate about a first axis. The first support member is rotatably connected to the first transmission component about a second axis parallel to the first axis, and is movably connected to the second transmission component. The second transmission component is rotatably connected to the substrate about a third axis parallel to the first axis. When the first transmission component rotates relative to the substrate, it drives the first support member to rotate, and the first support member drives the second transmission component to rotate relative to the substrate. The hinge assembly can rotate relative to the substrate without the need for an additional transmission structure, resulting in faster response and reduced material costs.

Description

Technical Field

[0001] This disclosure relates to the field of terminal technology, and in particular to a hinge device and a foldable electronic device. Background Technology

[0002] With the development of flexible OLED display technology and the combination of portability (compared to ordinary electronic devices) and the ultimate large-screen display experience when unfolded, foldable electronic devices have gradually become an important trend in mobile terminal development and a key area of ​​competition among major terminal manufacturers. Currently, the state switching of foldable electronic devices mainly relies on hinges, with the folding and unfolding of the hinges driving the folding and unfolding of the electronic device. Summary of the Invention

[0003] This disclosure provides a pivot device and a foldable electronic device to address the shortcomings of related technologies.

[0004] According to a first aspect of the present disclosure, a rotating shaft device is provided, comprising: a substrate and a rotating shaft assembly;

[0005] The rotating shaft assembly includes a first transmission component, a second transmission component, and a first support member; the first transmission component is rotatably connected to the substrate about a first axis; the first support member is rotatably connected to the first transmission component about a second axis parallel to the first axis, and is movably connected to the second transmission component; the second transmission component is rotatably connected to the substrate about a third axis parallel to the first axis.

[0006] Optionally, the substrate includes a first support plane, and the first support member includes a second support plane;

[0007] The rotating shaft device includes an unfolded state and a closed state; in the unfolded state, the second support plane and the first support plane are located on the same plane; in the closed state, the second support plane and the first support plane form a first preset angle, and the first support member and the substrate enclose a screen space.

[0008] Optionally, the first transmission component includes a first support surface and a second support surface, wherein the second support surface and the first support surface form a second preset angle.

[0009] In the unfolded state, the first support surface and the first support plane are located on the same plane; in the closed state, the second support surface abuts against the second support plane.

[0010] Optionally, the first transmission assembly includes a main body and a fixing member detachably connected to the main body. The main body is rotatably connected to the base plate about the first axis, and the first support member is rotatably connected to at least one of the fixing member and the main body about the second axis.

[0011] Optionally, at least one of the main body and the fixing member is provided with a first guide portion, and the first support member is provided with a second guide portion that slides with the first guide portion; or

[0012] A first guide portion is formed between the main body and the fixing member, and the first support member is provided with a second guide portion that slides with the first guide portion.

[0013] Optionally, the first guide portion includes at least one of a groove and a slider, and the second guide portion includes at least one of a groove and a slider adapted to the first guide portion.

[0014] Optionally, the main body is provided with a first positioning part, and the fixing member is provided with a second positioning part that positions and cooperates with the first positioning part.

[0015] Optionally, it also includes a pivot cover, wherein the substrate includes a first support plane, and the pivot cover is disposed on the side of the substrate away from the first support plane.

[0016] Optionally, the first transmission component is provided with a first limiting structure, and at least one of the base plate and the rotating shaft cover is provided with a second limiting structure that cooperates with the first limiting structure.

[0017] Optionally, the first limiting structure includes at least one of a limiting groove and a limiting portion, and the second limiting structure includes at least one of a limiting groove and a limiting portion adapted to the first limiting structure.

[0018] Optionally, the substrate is provided with a first trajectory axis parallel to the first axial direction, and the first support member is provided with a first trajectory groove that slides with the first trajectory axis; and / or

[0019] One of the first support member and the second transmission assembly is provided with a second trajectory axis parallel to the third axis, and the other of the first support member and the second transmission assembly is provided with a second trajectory structure that slides with the second trajectory axis.

[0020] Optionally, the number of the rotating shaft assemblies is at least two sets, and at least one set of the rotating shaft assemblies is provided on each side of the substrate along the direction perpendicular to the first axis.

[0021] Optionally, at least one of the first transmission component and the second transmission component of the rotating shaft assembly located on one side of the substrate is provided with a first engaging member, and at least one of the first transmission component and the second transmission component of the rotating shaft assembly located on the other side of the substrate is provided with a second engaging member that engages with the first engaging member.

[0022] The first engaging member located on one side of the substrate engages with the second engaging member located on the other side of the substrate to keep the rotating shaft assemblies on both sides of the substrate moving synchronously.

[0023] Optionally, it also includes at least one set of linkage transmission pairs, which are meshed between the first meshing member and the corresponding second meshing member located on both sides of the substrate.

[0024] Optionally, it also includes a damping mechanism that abuts against at least one of the first transmission assembly and the second transmission assembly.

[0025] Optionally, the damping mechanism includes a clamping plate and a first elastic member, the clamping plate abutting against at least one of the first transmission assembly and the second transmission assembly along a second direction; one end of the first elastic member abutting against the clamping plate and the other end abutting against the base plate.

[0026] Optionally, at least one of the first transmission assembly and the second transmission assembly is provided with a first connecting hole extending through the second direction, and the clamping plate is provided with a second connecting hole extending through the second direction, the second connecting hole being correspondingly provided with the first connecting hole;

[0027] The damping mechanism further includes a connecting shaft, which passes through the first connecting hole and the corresponding second connecting hole, and the first elastic element is sleeved on the connecting shaft.

[0028] Optionally, at least one of the first transmission assembly and the second transmission assembly is provided with a first cam structure, and the clamping plate is provided with a second cam structure adapted to the first cam structure, the second cam structure abutting against the first cam structure.

[0029] Optionally, a second support member is also included, movably disposed on the substrate; the substrate includes a first support plane, the first support member includes a second support plane, and the second support member includes a third support plane;

[0030] The rotating shaft device includes an unfolded state and a closed state; in the unfolded state, the second support member is located in a first position, and the third support plane is located on the same plane as the second support plane;

[0031] In the closed state, the second support plane forms a first preset angle with the first support plane; the second support member is located in a second position, which is closer to the substrate than the first position; the first support member and the second support member enclose the screen space.

[0032] Optionally, a third transmission component is also included, connected to the second support member, for driving the second support member to move relative to the substrate.

[0033] Optionally, the third transmission assembly includes a transmission member and a second elastic member connected to the transmission member; one side of the transmission member is connected to the side of the second support member near the substrate, and the other side is movably connected to the substrate; one end of the second elastic member is connected to the substrate, and the other end is connected to the transmission member.

[0034] Optionally, the transmission component includes a transmission part and a connecting part, one end of the connecting part is connected to the side of the second support member near the base plate, and the other end is connected to the transmission part;

[0035] The transmission part is movably connected to the base plate, and one end of the second elastic member is connected to the base plate, while the other end is connected to the transmission part.

[0036] Optionally, the transmission part is provided with a third guide part, and the substrate is provided with a fourth guide part that guides and cooperates with the third guide part on the side near the second support member;

[0037] The second elastic element is sleeved on the fourth guide portion, with one end of the second elastic element connected to the fourth guide portion and the other end connected to the transmission portion.

[0038] Optionally, the first transmission component is provided with a pushing part, which is used to drive the second support member to move from the second position to the first position when switching from the closed state to the unfolded state; in the unfolded state, the pushing part is supported on the side of the second support member close to the substrate.

[0039] According to a second aspect of the present disclosure, a foldable electronic device is provided, including a mid-frame housing, a flexible display screen, and the hinge device described in the first aspect; the flexible display screen is connected to the mid-frame housing.

[0040] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0041] As can be seen from the above embodiments, when the first transmission component of this disclosure rotates relative to the substrate, it drives the first support component to rotate. The first support component drives the second transmission component to rotate relative to the substrate. No additional transmission structure is required to complete the rotation of the entire shaft assembly relative to the substrate. The response speed is faster and material costs are saved.

[0042] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0043] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0044] Figure 1 This is a schematic diagram illustrating the structure of a foldable electronic device when folded, according to an exemplary embodiment.

[0045] Figure 2 This is a schematic diagram illustrating the structure of a foldable electronic device when unfolded, according to an exemplary embodiment.

[0046] Figure 3 This is a front view of a rotating shaft device according to an exemplary embodiment.

[0047] Figure 4 This is a schematic diagram of the rear of a rotating shaft device according to an exemplary embodiment.

[0048] Figure 5 This is a partial schematic diagram illustrating a rotating shaft device in its unfolded state according to an exemplary embodiment.

[0049] Figure 6 and Figure 7 This is a partial schematic diagram illustrating a rotating shaft device when closed according to an exemplary embodiment.

[0050] Figure 8 and Figure 9 This is a schematic diagram of the main body of a first transmission component according to an exemplary embodiment.

[0051] Figure 10 This is a schematic diagram of the structure of a second transmission component according to an exemplary embodiment.

[0052] Figure 11 This is an assembly diagram of a first transmission component and a second transmission component according to an exemplary embodiment.

[0053] Figure 12 and Figure 13This is a side view of a rotating shaft device in different states according to an exemplary embodiment.

[0054] Figure 14 This is a partial schematic diagram of a substrate according to an exemplary embodiment.

[0055] Figure 15 This is a schematic diagram of the structure of a fixing member of a first transmission component according to an exemplary embodiment.

[0056] Figure 16 This is a schematic diagram of the structure of a first support member according to an exemplary embodiment.

[0057] Figures 17 to 19 This is a schematic diagram illustrating the assembly of a first support member and a first transmission assembly according to an exemplary embodiment.

[0058] Figure 20 This is a partial schematic diagram of a substrate according to an exemplary embodiment. Detailed Implementation

[0059] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0060] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0061] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0062] The rotating shaft device and foldable electronic device according to embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can be combined with each other.

[0063] See Figure 1 and Figure 2 As shown, this disclosure provides a foldable electronic device 100, which can be a foldable mobile phone, tablet computer, laptop computer, camera, or other foldable terminal device. The foldable electronic device 100 may include a mid-frame housing 91, a flexible display screen 92, and a hinge device 200. The flexible display screen 92 is connected to the mid-frame housing 91, and the hinge device 200 is installed in the middle of the mid-frame housing 91. The mid-frame housing 91 can rotate via the hinge device 200, enabling the foldable electronic device 100 to rotate... Figure 1 The folding state shown and Figure 2 The flexible display screen 92 is laid flat between the first and second housings, and a pivot device 200 is installed between the first and second housings. Either the first or the second housing can be rotated relative to the other via the pivot device 200, so that the flexible display screen 92 can be bent or unfolded synchronously.

[0064] See Figures 3 to 7 The rotating shaft device 200 may include a base plate 10 and a rotating shaft assembly 20. The rotating shaft assembly 20 includes a first transmission assembly 21, which is connected to the middle frame housing 91 to achieve assembly of the rotating shaft device 200 and the middle frame housing 91. Optionally, the first transmission assembly 21 is provided with a mounting portion 210, which is connected to the middle frame housing 91. A corresponding connecting portion may be provided on the middle frame housing 91, which is assembled and connected to the mounting portion 210 to install the first transmission assembly 21 on the middle frame housing 91. In this embodiment, the mounting portion 210 includes at least one mounting hole, and the connecting portion includes at least one connecting hole. For example, the mounting hole and the connecting hole may be at least one of threaded holes, riveting holes, and smooth holes. A connecting hole may be provided on the middle frame housing 91 at the position corresponding to the mounting hole, and fasteners such as screws are inserted into the mounting hole and the connecting hole of the middle frame housing 91 to install the first transmission assembly 21 on the middle frame housing 91, thereby achieving assembly of the rotating shaft device 200 and the middle frame housing 91.

[0065] Understandably, one end of the first transmission component 21 is rotatably connected to the substrate, and the other end of the first transmission component 21 is connected to the middle frame housing 91 through the mounting part 210. No additional parts are required, and force can be directly transmitted between the two, resulting in a faster response speed. When the user rotates either the first housing or the second housing, the other housing can be rotated synchronously via the rotating shaft device 200 with a faster response speed, achieving the effect of synchronous folding or unfolding on both sides, thereby causing the flexible display screen 92 to be bent or unfolded synchronously.

[0066] Furthermore, the rotating shaft assembly 20 also includes a first support member 22 and a second transmission assembly 23. The first transmission assembly 21 is rotatably connected to the base plate 10 about a first axial direction (shown as the X direction in the figure). The first support member 22 is rotatably connected to the first transmission assembly 21 about a second axial direction parallel to the first axial direction, and is movably connected to the second transmission assembly 23. The second transmission assembly 23 is rotatably connected to the base plate 10 about a third axial direction parallel to the first axial direction. It is understood that the first, second, and third axial directions can be coaxial or non-coaxial.

[0067] When the first transmission component 21 rotates relative to the substrate 10, it drives the first support member 22 to rotate relative to the substrate 10. The first support member 22 then drives the second transmission component 23 to rotate relative to the substrate 10. This configuration allows the first support member 22 to drive the second transmission component 23 to rotate relative to the substrate 10, eliminating the need for additional transmission structures and saving material costs. The thickness of the rotating shaft device 200 can be made thinner, meeting the requirements of miniaturized product design, and the response speed is also faster.

[0068] Optionally, the rotating shaft assembly 20 may include at least two first transmission components 21, spaced apart along the length of the substrate 10, with the first support member 22 connected to the at least two first transmission components 21. This allows the first support member 22 to rotate through the combined action of the at least two first transmission components 21, resulting in a faster response speed and improved stability during rotation. In this embodiment, the rotating shaft assembly 20 includes two first transmission components 21, located on both sides of the first support member 22. It should be noted that the number of first transmission components 21 can be adjusted according to actual conditions, such as the length of the substrate, the length of the first support member, assembly space, and placement position; this disclosure does not impose any limitations on this.

[0069] In some alternative embodiments, the substrate 10 includes a first support plane (e.g., Figure 6 The upper surface is shown in the diagram. The first support member 22 includes a second support plane (as shown in the diagram). Figure 6 The upper surface is shown in the diagram. The rotating shaft device 200 includes an extended state and a closed state. Figure 3 and Figure 5 As shown, when the pivot device 200 is in the unfolded state, the second support plane of the first support member 22 and the first support plane of the substrate 10 are located on the same plane, which can be used to support the flexible display screen 92 of the foldable electronic device 100. Figure 6 and Figure 7 As shown, the second supporting plane of the first supporting member 22 and the first supporting plane of the substrate 10 can form a first preset angle, and the first supporting member 22 and the substrate 10 enclose a screen space. Optionally, the first preset angle can be between 60° and 75°, and the angle can be adjusted according to the actual situation; this disclosure does not limit this. In the illustrated example, the first preset angle is 90° as an example. Thus, as... Figure 7 As shown, when the pivot device 200 is in the closed state, the substrate 10 and the first support member 22 can enclose and form a screen-accommodating space that is similar to a "water droplet" shape. The screen-accommodating space is large and is used to accommodate the flexible display screen 92 of the foldable electronic device 100. When the foldable electronic device 100 is folded, the flexible display screen 92 can be set in a basically "water droplet" shape. Compared with the 90° folding method in related technologies, the bending angle of the flexible display screen 92 during folding can be reduced, thereby reducing the creases after the flexible display screen 92 is unfolded, making the flexible display screen less prone to damage and improving its service life.

[0070] In some optional embodiments, the first transmission component 21 includes a first support surface 2111 and a second support surface 2121, with the second support surface 2121 and the first support surface 2111 forming a second preset angle. Optionally, the second preset angle can be set according to the first preset angle, and the range can be between 60° and 75°. The angle can be adjusted according to the actual situation, and this disclosure does not limit it.

[0071] In the unfolded state, the first support surface 2111 and the first support plane of the substrate 10 are located on the same plane, which can be used to support the flexible display screen. In the closed state, the second support surface 2121 abuts against the second support plane of the first support member 22. Thus, in the closed state, the second support surface 2121 of the first transmission assembly 21 can support the first support member 22, and the first support surface 2111 can also provide some support for the flexible display screen, improving the stability of the whole device in the folded state.

[0072] See Figure 7As shown, in some optional embodiments, the first transmission assembly 21 may include a first structural portion 211 and a second structural portion 212 connected to the first structural portion 211, the second structural portion 212 being disposed relative to the first structural portion 211 near the substrate 10. The first structural portion 211 has a first support surface 2111 on the side near the first support member 22, and the second structural portion 212 has a second support surface 2121 on the side near the first support member 22. The second structural portion 212 includes a first end ( ) near the side of the first structural portion 211. Figure 7 The upper end is shown in the diagram, and the second end is located away from the first structural part 211. Figure 7 The lower end is shown in the diagram. Along the direction from the first end to the second end, the second structural portion 212 is perpendicular to the first support surface 2111. Figure 7 The thickness of the second support surface 2121 (shown in the direction of the dashed line) gradually decreases so that the second support surface 2121 and the first support surface 2111 form the second preset angle.

[0073] In some optional embodiments, the number of the hinge assemblies 20 is at least two sets, and at least one set of the hinge assemblies 20 is respectively provided on opposite sides of the substrate 10 along a first direction (shown in the figure as the Y direction). In this embodiment, the first direction may be perpendicular to the first axial direction. In other examples, the first direction may also be other directions, and this disclosure is not limited thereto. In the illustrated example, two sets of hinge assemblies 20 are provided, with one set of hinge assemblies 20 provided on each side of the substrate 10. Of course, it should be noted that the number of hinge assemblies 20 and the number of hinge assemblies 20 provided on the same side of the substrate 10 can be adjusted according to actual conditions, such as the length of the foldable electronic device, assembly space, placement position, etc., and this disclosure is not limited thereto.

[0074] In some optional embodiments, at least one of the first transmission component 21 and the second transmission component 23 of the rotating shaft assembly 20 located on one side of the substrate 10 is provided with a first engaging member 31, and at least one of the first transmission component 21 and the second transmission component 23 of the rotating shaft assembly 20 located on one side of the substrate 10 is provided with a second engaging member 32 that engages with the first engaging member 31. The first engaging member 31 located on one side of the substrate 10 is engaged with the second engaging member 32 located on the other side of the substrate 10 to maintain synchronous movement between the rotating shaft assemblies 20 located on both sides of the substrate 10. Optionally, the first engaging member 31 and the second engaging member 32 can be adapted gears or other adapted engaging members, and this disclosure is not limited in this regard. It is understood that in the rotating shaft assembly 20 located on one side of the substrate 10, the first transmission component 21 may be provided with the first engaging member 31, the second transmission component 23 may be provided with the first engaging member 31, or both the first transmission component 21 and the second transmission component 23 may be provided with the first engaging member 31. In the rotating shaft assembly 20 located on the other side of the substrate 10, the first transmission assembly 21 may have a second engaging member 32, the second transmission assembly 23 may have a second engaging member 32, or both the first transmission assembly 21 and the second transmission assembly 23 may have a second engaging member 32. The positions of the first engaging member 31 and the second engaging member 32 can be adjusted according to actual needs, and this disclosure does not limit this.

[0075] Thus, the pivot assembly 20 located on one side of the substrate 10 can be connected to one of the first and second housings of the mid-frame housing 91, and the pivot assembly 20 located on the other side of the substrate 10 can be connected to the other of the first and second housings. When the user rotates either the first or second housing, the engagement of the first engaging member 31 and the second engaging member 32 on both sides of the substrate 10 can drive the other of the first and second housings to rotate synchronously, achieving the effect of synchronous folding or unfolding on both sides, thereby causing the flexible display screen 92 to be bent or unfolded synchronously.

[0076] See Figure 4 As shown in the illustrated example, the second transmission component 23 of the rotating shaft assembly 20 located on one side of the substrate 10 is provided with a first engaging member 31, and the second transmission component 23 of the rotating shaft assembly 20 located on the other side of the substrate 10 is provided with a second engaging member 32. In the illustrated example, the first engaging member 31 and the second transmission component 23 are integrally formed. It should be noted that the first engaging member 31, the second engaging member 32, and the first transmission component 21 and the second transmission component 23 of the rotating shaft assembly 20 can be integrally formed, or they can be detachably connected by assembly. The configuration can be determined according to actual needs, and this disclosure does not impose any limitations on this.

[0077] In some optional embodiments, the rotating shaft device 200 may further include at least one set of linkage transmission pairs 30, which are engaged between the first engaging member 31 and the second engaging member 32 located on both sides of the substrate 10. By providing linkage transmission pairs 30 between the first engaging member 31 and the second engaging member 32, the stability of synchronous rotation can be improved. When the user rotates either the first housing or the second housing, the engagement between the first engaging member 31 and the second engaging member 32 on both sides of the substrate 10 and the linkage transmission pairs 30 can drive the other housing to rotate synchronously, achieving the effect of synchronous folding or unfolding on both sides, thereby causing the flexible display screen 92 to be bent or unfolded synchronously. It is understood that the number of linkage transmission pairs 30 can be one set or multiple sets, which can be set according to actual needs, and this disclosure does not limit this. In the illustrated example, the number of linkage transmission pairs 30 is exemplified by one set.

[0078] Optionally, the first meshing member 31 and the second meshing member 32 can be compatible gears, and the linkage transmission pair 30 can be a linkage gear pair, which may include two or more meshing synchronous gears 33. The first meshing member 31 meshes with one of the synchronous gears 33, and the second meshing member 32 meshes with the other synchronous gear 33. The first meshing member 31, the second meshing member 32, and the synchronous gears 33 cooperate to achieve synchronous transmission. It should be noted that the first meshing member 31, the second meshing member 32, and the linkage transmission pair 30 can also be other compatible meshing members, and the number of linkage transmission pairs 30 can be set according to actual needs. This disclosure does not limit this.

[0079] Thus, the first transmission component 21 of the rotating shaft assembly 20 located on one side of the substrate rotates relative to the substrate 10, driving the first support member 22 of the same group to rotate. The first support member 22 then drives the second transmission component 23 of the same group to rotate relative to the substrate 10. Through the engagement of the first meshing member 31, the linkage transmission pair 30, and the second meshing member 32, the second transmission component 23 of the rotating shaft assembly 20 located on the other side of the substrate rotates synchronously relative to the substrate 10. The second transmission component 23 then drives the first support member 22 of the rotating shaft assembly 20 on the other side to rotate synchronously. The first support member 22 then drives the first transmission component 21 of the rotating shaft assembly 20 on the other side to rotate relative to the substrate 10, thereby achieving synchronous rotation of the rotating shaft assembly 20 on the other side. This ensures that when the user rotates either the first housing or the second housing, the rotating shaft device 200 can drive the other housing to rotate synchronously, achieving the effect of synchronous folding or unfolding on both sides, thereby causing the flexible display screen 92 to be bent or unfolded synchronously. It should be noted that the linkage transmission pair 30 can also be connected between the first transmission components 21 of the two sets of rotating shaft assemblies 20. The first meshing member 31 can be connected to the first transmission component 21 of one set of rotating shaft assemblies 20, and the second meshing member 32 can be connected to the first transmission component 21 of the other set of rotating shaft assemblies 20. This disclosure does not limit this.

[0080] See Figure 4 As shown, in some optional embodiments, the pivot device 200 may further include a damping mechanism 40, which abuts against at least one of the first transmission component 21 and the second transmission component 23 of the pivot assembly 20. With this configuration, the damping mechanism 40 can provide a certain frictional damping to the pivot assembly 20, resulting in a better hovering effect when the pivot assemblies 20 on both sides rotate synchronously, thus improving the user's tactile experience when operating the foldable electronic device 100. It should be noted that when the linkage transmission pair 30 is provided, the damping mechanism 40 can abut against the first engaging member 31, the second engaging member 32, and the linkage transmission pair 30. Optionally, an assembly space, such as a groove, may be provided on the substrate 10 for accommodating and assembling the damping mechanism 40; this disclosure does not limit this.

[0081] In some alternative embodiments, the damping mechanism 40 includes a clamping plate 41 and a first elastic member 42, the clamping plate 41 abutting against at least one of the first transmission assembly 21 and the second transmission assembly 23 along a second direction. One end of the first elastic member 42 abuts against the clamping plate 41, and the other end abuts against the base plate 10. This arrangement provides an elastic force to the clamping plate 41 via the first elastic member 42, which in turn provides frictional damping against at least one of the first transmission assembly 21 and the second transmission assembly 23. In the illustrated example, the second direction is parallel to the first axial direction, as shown along the X direction in the figure. In other examples, the second direction may also be along other directions, and this disclosure is not limiting in this regard.

[0082] It should be noted that, when the linkage transmission pair 30 is provided, the clamping plate 41 can abut against the first meshing member 31, the second meshing member 32, and the linkage transmission pair 30. Optionally, the damping mechanism 40 may further include a fixing plate 43, which is fixedly connected to the base plate 10 by screws, bolts, or other fastening methods. One end of the first elastic member 42 abuts against the clamping plate 41, and the other end abuts against the fixing plate 43, which can improve the stability of the first elastic member 42. Optionally, the clamping plate 41, the first elastic member 42, and the fixing plate 43 may be disposed within the groove, and the fixing plate 43 may be fixedly connected to the inner wall of the groove by screws, bolts, or other fastening methods.

[0083] In the illustrated example, the first elastic element 42 can be a spring. There can be two clamping plates 41, which respectively abut against at least one of the first transmission component 21 and the second transmission component 23 of the rotating shaft assembly 20 on both sides along the second direction, generating frictional damping on both sides of the rotating shaft assembly 20. This achieves a better hovering effect when the rotating shaft assembly 20 rotates, further improving the user's tactile experience when operating the foldable electronic device 100. It should be noted that the first elastic element 42 can also be other elastic structures, and the number of clamping plates 41 can also be set to other numbers as needed; this disclosure does not limit this.

[0084] In some optional embodiments, at least one of the first transmission component 21 and the second transmission component 23 of the rotating shaft assembly 20 is provided with a first connecting hole extending along the second direction, and the clamping plate 41 is provided with a second connecting hole extending along the second direction, the second connecting hole corresponding to the first connecting hole. At least one of the first transmission component 21 and the second transmission component 23 is provided with a first cam structure, and the clamping plate 41 is provided with a second cam structure adapted to the first cam structure, the second cam structure abutting against the first cam structure. It is understood that the clamping plate 41 can be a cam plate or other plate with a cam structure. The damping mechanism 40 may further include a connecting shaft 44 arranged along the second direction, the connecting shaft 44 passing through the first connecting hole and the second connecting hole, and the first elastic member 42 sleeved on the connecting shaft 44. With this arrangement, through the cam cooperation of the first cam structure and the second cam structure, when the rotating shaft assemblies 20 on both sides rotate synchronously, the first elastic member 42 can be squeezed to generate greater frictional damping, thereby achieving a better hovering effect and further improving the user's tactile experience when operating the foldable electronic device 100. In the illustrated example, both the first engaging member 31 and the second engaging member 32 are located on the second transmission assembly 23. The first connecting hole can be located on the first engaging member 31 and the second engaging member 32. Thus, by passing the connecting shaft 44 through the corresponding first and second connecting holes, the second transmission assembly 23 and the clamping plate 41 are connected as a whole, and the second transmission assembly 23 can rotate relative to the base plate 10 with the connecting shaft 44 as the axis. It should be noted that when the linkage transmission pair 30 is provided, the synchronous gear 33 of the linkage transmission pair 30 and the clamping plate 41 can also be provided with connecting holes at corresponding positions, and by passing the connecting shaft 44 through the corresponding connecting holes, the clamping plate 41 and the linkage transmission pair 30 are connected as a whole.

[0085] See Figure 6 , Figures 8 to 11As shown, in some optional embodiments, one of the first support member 22 and the second transmission assembly 23 is provided with a second trajectory shaft 231 parallel to the third axis, and the other of the first support member 22 and the second transmission assembly 23 is provided with a second trajectory structure 224 that slides in cooperation with the second trajectory shaft 231. The second trajectory structure 224 may be provided with a groove structure that cooperates with the second trajectory shaft 231, such as the second arc-shaped trajectory groove 225 shown in the figure. When the first transmission assembly 21 rotates relative to the substrate 10, the second trajectory shaft 231 slides along the second arc-shaped trajectory groove 225 relative to the second trajectory structure 224, and the second trajectory shaft 231 is rotated by the part of the second trajectory structure 224 that contacts the second trajectory shaft 231, thereby driving the second transmission assembly 23 to rotate relative to the substrate 10. In the illustrated example, the second trajectory structure 224 may include the second arc-shaped trajectory groove 225. In other examples, the second trajectory structure 224 may also include a groove structure of other shapes, which is not limited in this disclosure. In other examples, the second transmission component 23 may also be movably connected to the first transmission component 21. When the transmission component 21 rotates relative to the substrate 10, it drives the first support member 22 to rotate, and the first transmission component 21 drives the second transmission component 23 to rotate relative to the substrate 10. This disclosure does not limit this.

[0086] Furthermore, such as Figure 10 and Figure 11 In the example shown, a shaft hole 232 can be formed at the end of the second transmission component 23 away from the substrate 10, and the second trajectory shaft 231 is disposed within the shaft hole 232. Figure 6 In the example shown, a shaft groove 233 can be provided at the end of the second transmission component 23 away from the substrate 10, and the second trajectory shaft 231 is disposed within the shaft groove 233. Optionally, the second arc-shaped trajectory groove 225 can be provided on both sides of the second trajectory structure 224 along the length direction of the first support member 22. The second trajectory shaft 231 can be provided on both sides of the shaft groove 233 along the length direction of the substrate 10, corresponding to and cooperating with the second arc-shaped trajectory groove 225, which can improve the stability of the first support member 22 when it moves.

[0087] Understandably, since the first transmission component 21 rotates relative to the substrate around the first axis and the second transmission component 23 rotates relative to the substrate 10 around the third axis, that is, the two rotate relative to the substrate 10 around two axes that are different from the first axis. Through the cooperation of the second track shaft 231 and the second arc-shaped track groove 225, when the first transmission component 21 rotates relative to the substrate 10 around the first axis and drives the first support member 22 to rotate, as the second track shaft 231 slides along the second arc-shaped track groove 225 relative to the second track structure 224, the contact position between the first support member 22 and the second track shaft 231 can be adjusted in real time, so that no matter what position the first support member 22 rotates to, it can drive the second transmission component 23 to rotate relative to the substrate 10 around the third axis that is different from the first axis.

[0088] See Figure 3 and Figure 5 As shown, in some optional embodiments, the rotating shaft device 200 may further include a second support member 50, which can be movably disposed on the substrate 10 along a third direction (Z direction shown in the figure). It may also interact with the substrate 10 in other directions; this disclosure is not limited thereto. The substrate 10 includes a first support plane, the first support member 22 includes a second support plane, and the second support member 50 includes a third support plane (e.g., ...). Figure 6 The image shows the upper surface.

[0089] See Figure 3 , Figure 5 and Figure 12 As shown, when the rotating shaft device 200 is in the unfolded state, the second support member 50 is located in the first position, and the third support plane is located on the same plane as the second support plane of the first support member 22. The first support member 22 and the first support member 22 can be used to support the flexible display screen 92.

[0090] See Figure 6 and Figure 13 As shown, when the hinge device 200 is in the closed state, the first support member 22 forms a first preset angle with the first support plane of the substrate 10. The third plane of the second support member 50 is located in a second position, which is closer to the substrate 10 than the first position. The first support member 22 and the second support member 50 together form a screen-accommodating space. Optionally, the first preset angle can be between 60° and 75°, and the angle can be adjusted according to actual conditions. This disclosure does not limit this. With this configuration, when the hinge device 200 switches from the open state to the closed state, the second support member 50 can move from the first position along the third direction to a second position closer to the substrate 10, thereby making more space available for the "teardrop-shaped" screen-accommodating space and further increasing the screen-accommodating space.

[0091] See Figures 12 to 14As shown, in some optional embodiments, the rotating shaft device 200 may further include a third transmission component 60, disposed on the base plate 10 and connected to the second support member 50, for driving the second support member 50 to move along the third direction. Optionally, there may be two or more third transmission components 60, spaced apart along the length direction of the second support member 50 (shown in the figure along the X direction), which can improve the stability of the second support member 50 when it moves.

[0092] The third transmission assembly 60 may include a transmission member 61 and a second elastic member 62 connected to the transmission member 61. One side of the transmission member 61 is connected to the side of the second support member 50 near the base plate 10, and the other side is movably connected to the base plate 10. One end of the second elastic member 62 is connected to the base plate 10, and the other end is connected to the transmission member 61. Optionally, the second elastic member 62 may be a spring. Thus, the elastic force provided by the second elastic member 62 drives the second support member 50 to move along the third direction.

[0093] See Figure 8 As shown, in some optional embodiments, a pushing portion 24 may be provided at the end or other position of the first transmission component 21, and the pushing portion 24 may be located between the base plate 10 and the second support member 50. When the rotating shaft device 200 switches from the closed state to the unfolded state, the pushing portion 24 is used to drive the second support member 50 from the second position to the first position. Furthermore, in the unfolded state, the pushing portion 24 supports the second support member 50 on the side near the base plate 10 to improve the stability of the second support member 50 in the unfolded state.

[0094] Understandably, the first transmission component 21 is self- Figure 6 The closed state shown is rotated to Figure 5 In the unfolded state shown, the second support member 50 is driven along the third direction by the pushing part 24. Figure 13 The second position shown rises to Figure 12 The first position shown. And... Figure 5 In the unfolded state shown, the pushing part 24 is supported on the side of the second support member 50 near the substrate 10.

[0095] First transmission component 21 Figure 5 Rotate to the unfolded state shown Figure 6 In the closed state shown, the second support member 50, under the action of its own weight and the elastic action of the second elastic member 62, gradually moves along the third direction. Figure 12 The first position shown has dropped to Figure 13 The second position shown.

[0096] In some optional embodiments, the side of the pushing part 24 is provided with an arc-shaped surface 241, and the end of the pushing part 24 is provided with a pushing surface 242 connected to the arc-shaped surface. When the rotating shaft device 200 is in the closed state, the side of the second support member 50 abuts against the arc-shaped surface 241. When the rotating shaft device 200 switches from the closed state to the unfolded state, the pushing surface 242 is used to drive the second support member 50 from the second position to the first position. When the rotating shaft device 200 is in the unfolded state, the pushing surface 242 supports the second support member 50 on the side near the substrate 10 to improve the stability of the second support member 50 in the unfolded state.

[0097] See also Figures 12 to 14 As shown, in some optional embodiments, the transmission member 61 includes a transmission part 611 and a connecting part 612. One end of the connecting part 612 is connected to the side of the second support member 50 near the substrate 10 (shown as the bottom side in the figure), and the other end is connected to the transmission part 611. The transmission part 611 is movably connected to the substrate 10 along the third direction. One end of the second elastic member 62 is connected to the substrate 10, and the other end is connected to the transmission member 61. Optionally, the second support member 50 may be provided with a first screw hole 51, and the connecting part 612 may be provided with a corresponding second screw hole 613. After a screw or other fastener 52 passes through the first screw hole 51, it is fixed to the second screw hole 613, thereby fixing the connecting part 612 to the second support member 50. Thus, when the second support member 50 moves relative to the substrate 10 along the third direction, it drives the connecting part 612 and the transmission part 611 to move synchronously, thereby squeezing or stretching the second elastic member 62, so that the second elastic member 62 can provide a certain elastic force to the second support member 50.

[0098] Furthermore, the transmission part 611 has a third guide part, and a fourth guide part 14 on the side of the base plate 10 near the second support member 50 is guided and engaged with the third guide part. In the illustrated example, the third guide part may include a guide hole disposed along the third direction, and the fourth guide part 14 may include a guide post passing through the third guide part. In other examples, the third and fourth guide parts may also have other structural forms, as long as they can achieve the guiding function, and this disclosure is not limited in this regard.

[0099] The second elastic member 62 is sleeved on the fourth guide portion 14, with one end connected to the fourth guide portion 14 and the other end connected to the transmission portion. In the illustrated example, one end of the second elastic member 62 is connected to the end of the fourth guide portion 14 near the second support member 50, and the other end is connected to the side of the transmission portion 611 near the second support member 50. In other examples, the connection position of the second elastic member 62 can be set according to the situation, and this disclosure does not limit it. Optionally, such as Figure 15 As shown, a structural groove 15 adapted to the structure of the transmission member 61 can be provided on the substrate 10, and the fourth guide portion 14 can be a guide post provided in the structural groove 15. The transmission member 61 is provided in the structural groove 15, and the transmission portion 611 is located below the second elastic member 62. The upper end of the second elastic member 62 is connected to the fourth guide portion 14, and the lower end is connected to the transmission portion 611.

[0100] Thus, the first transmission component 21 self- Figure 6 The closed state shown is rotated to Figure 5 When in the unfolded state shown, it drives the second support member 50 to move from... Figure 13 The second position shown rises to Figure 12 In the first position shown, when the second support member 50 moves, it drives the connecting part 612 and the transmission part 611 to move synchronously. The transmission part 611 squeezes the second elastic member 62, causing the second elastic member 62 to be in a compressed state. The second elastic member 62 has a downward elastic force on the transmission part 611.

[0101] First transmission component 21 Figure 5 Rotate to the unfolded state shown Figure 6 In the closed state shown, the second support member 50, under the action of its own weight and the elastic action of the second elastic member 62 on the transmission part 611, gradually moves from... Figure 12 The first position shown has dropped to Figure 13 The second position shown.

[0102] See Figure 6 , Figure 8 , Figure 9 and Figure 15As shown, in some optional embodiments, the first transmission assembly 21 includes a main body 213 and a fixing member 214 detachably connected to the main body 213. The main body 213 is rotatably connected to the base plate 10 about the first axis, and the first support member 22 is rotatably connected to at least one of the main body 213 and the fixing member 214 about the second axis. This configuration sets the first transmission assembly 21 as two detachable components that can be assembled with each other. After the first support member 22 is assembled with one of the main body 213 and the fixing member 214, the main body 213 and the fixing member 214 are then assembled to assemble the first support member 22 with the first transmission assembly 21, facilitating the assembly and disassembly of the first support member 22 and the first transmission assembly 21. In this embodiment, the example of assembling the first support member 22 with the fixing member 214 first, and then with the main body 213 is used to illustrate the water inlet process. When assembling the first support member 22 with the first transmission component 21, the first transmission component 21 can be rotated until the main body 213 is flattened, then the first support member 22 can be flattened and aligned with the main body 213, and then the fixing member 214 can be fixed to the main body 213. This facilitates the assembly and installation of the first support member 22 and the first transmission component 21, eliminates the need for additional assembly parts, reduces the number of parts, reduces gaps, improves assembly accuracy, and improves synchronization.

[0103] It should be noted that, as Figure 16 As shown, in some optional embodiments, the main body 213 may include the first structural portion 211 and the second structural portion 212. The fastener 214 may include a first sub-fastener 2141 and a second sub-fastener 2142 connected to the first sub-fastener 2141, the second sub-fastener 2142 being disposed near the substrate 10 relative to the first sub-fastener 2141. The first sub-fastener 2141 has a third support surface 2143 flush with the first support member 22 on the side near the first support member 22, and the second sub-fastener 2142 has a fourth support surface 2144 flush with the second support surface 2121 on the side near the first support member 22, the fourth support surface 2144 and the third support surface 2143 also forming the second preset angle. Thus, the first support surface 2111 of the main body 213 and the third support surface 2143 of the fastener 214 together form a support surface that can be used to support the flexible display screen, and the second support surface 2121 of the main body 213 and the fourth support surface 2144 of the fastener 214 together form a support surface that can be used to support the first support member 22.

[0104] Further, see Figure 15 and Figure 16As shown, at least one of the main body 213 and the fixing member 214 may be provided with a first guide portion, and the first support member 22 may be provided with a second guide portion that slides with the first guide portion. Alternatively, the main body 213 and the fixing member 214 may share a first guide portion, and the first support member 22 may be provided with a second guide portion that slides with the first guide portion. It is understood that the first guide portion may be provided on the main body 213, or on the fixing member 214, or may be formed by a portion of the structure of the main body 213 and a portion of the structure of the fixing member 214. For example, in some embodiments, the first guide portion may be provided on the side wall of the fixing member 214 near the main body 213. When the first transmission assembly 21 rotates relative to the base plate 10, it drives the first support member 22 to rotate through the sliding engagement of the first guide portion and the second guide portion. Optionally, the first guide portion includes at least one of a groove and a sliding member, and the second guide portion includes at least one of a groove and a sliding member that is adapted to the first guide portion. The structure of the groove and the sliding member may be set according to the actual situation, and this disclosure does not limit it.

[0105] In some embodiments, the first guide portion may include one of a first arcuate groove 215 and a first arcuate structure 221 that are mutually adapted to each other, and the second guide portion may include the other of the first arcuate groove 215 and the first arcuate structure 221 that are mutually adapted to each other. It is understood that the sidewall of the fixing member 214 near the main body 213 is provided with one of the first arcuate groove 215 and the first arcuate structure 221 that are mutually adapted to each other, and the first support member 22 is provided with the other of the first arcuate groove 215 and the first arcuate structure 221. The first arcuate structure 221 is disposed within the first arcuate groove 215, and the axial direction of both the first arcuate groove 215 and the first arcuate structure 221 is arranged along the second axial direction. When the first transmission assembly 21 rotates relative to the substrate 10, the first arcuate structure 221 slides along the first arcuate groove 215 to drive the first support member 22 to rotate.

[0106] With this configuration, when the first transmission component 21 rotates relative to the base plate 10, the first support component 22 can rotate relative to the first transmission component 21 through the cooperation of the arc-shaped groove 215 and the arc-shaped trajectory of the first arc-shaped structure 221. Furthermore, the cooperation of the arc-shaped groove 215 and the arc-shaped trajectory of the first arc-shaped structure 221 has a certain guiding and limiting effect, improving the stability of the first support component 22 during rotation. In this embodiment, the side wall of the fixing member 214 near the main body 213 is provided with the first arc-shaped groove 215, and the first support component 22 is provided with the first arc-shaped structure 221. It can be understood that when the support component of a set of rotating shaft assemblies 20 includes two first transmission components 21, a first arc-shaped structure 221 can be provided at each end of the first support component 22 along its length, respectively cooperating with the first arc-shaped groove 215 of the fixing member 214 of the two first transmission components 21.

[0107] Optionally, the fastener 214 and the main body 213 have a receiving space for accommodating a portion of the structure of the first support member 22. The first arcuate structure 221 of the first support member 22 slides within this receiving space with the first arcuate groove 215 of the fastener 214.

[0108] See Figures 17 to 19 As shown, when assembling the first support member 22 with the first transmission assembly 21, the first transmission assembly 21 can be rotated until the main body 213 is flattened. Then, the first support member 22 is flattened and aligned with the main body 213, as shown. Figure 17 and Figure 18 As shown. Then, the first arc-shaped groove 215 of the fastener 214 is inserted into the first arc-shaped structure 221 of the first support 22, and then fixed to the main body 213 to complete the assembly, as shown. Figure 19 As shown.

[0109] In some alternative implementations, see [link to implementation details]. Figure 8 , Figure 9 and Figure 15 As shown, the main body 213 is provided with a first positioning part, and the fixing member 214 is provided with a second positioning part that positions and cooperates with the first positioning part. The first positioning part and the second positioning part can be structures such as positioning holes, positioning posts, and positioning grooves, as well as structures such as positioning posts and positioning members that cooperate with positioning holes, positioning posts, and positioning grooves. This disclosure does not limit these aspects.

[0110] Optionally, in some examples, the main body 213 is provided with one of a mutually adaptable positioning element 2145 and a positioning hole 2131, and the fixing element 214 is provided with the other of the positioning element 2145 and the positioning hole 2131. When the fixing element 214 is connected to the main body 213, the positioning element 2145 passes through the positioning hole 2131, which can play a positioning role when the fixing element 214 and the main body 213 are assembled and fixed, thereby improving the assembly accuracy of the fixing element 214 and the main body 213. In this embodiment, the main body 213 is provided with a positioning hole 2131, and the fixing element 214 is provided with the positioning element 2145. The positioning hole 2131 is a racetrack-shaped hole, and the positioning element 2145 is a racetrack-shaped structure. The structures of the positioning hole 2131 and the positioning element 2145 can also be set to other shapes according to actual conditions, and this disclosure does not limit them.

[0111] In some optional embodiments, the main body 213 is provided with a first connecting portion, and the fastener 214 is provided with a second connecting portion that connects and cooperates with the first connecting portion. The first connecting portion and the second connecting portion may be structures such as connecting holes, screw holes, open holes, rivet holes, connecting grooves, etc., as well as structures such as connecting posts, connecting parts, screws, bolts, rivets, etc. that cooperate with connecting holes, screw holes, open holes, rivet holes, connecting grooves, etc., and this disclosure does not limit them.

[0112] In some optional embodiments, the main body 213 has a mounting groove 2133 on the side near the fastener 214. The mounting groove 2133 is adapted to the fastener 214, and the fastener 214 is disposed in the mounting groove 2133, thereby assembling and fixing it with the main body 213. The mounting groove 2133 can play a role in positioning and installing the fastener 214 during assembly, improving the assembly accuracy between the fastener 214 and the main body 213.

[0113] Furthermore, the bottom surface of the mounting groove 2133 can be recessed inward to form a positioning groove, and the fastener 214 protrudes outward on the side near the main body to form a protrusion 2147, which engages with the positioning groove. Through the engaging cooperation between the positioning groove and the protrusion 2147, the fastener 214 can be further positioned and limited during assembly, improving the assembly accuracy between the fastener 214 and the main body 213, and enhancing the stability of the fastener 214 after assembly and fixation with the main body 213.

[0114] See Figure 20 As shown, in some optional embodiments, the substrate 10 is provided with a first rotating shaft 11 arranged along the first axial direction, and the first transmission component 21 is rotatably connected to the first rotating shaft 11, thereby realizing a rotatable connection with the substrate 10 around the first axial direction.

[0115] Further, see Figure 6 , Figure 8 , Figure 9 and Figure 20 As shown, a first receiving groove 12 can be provided on the surface of the substrate 10 near the first transmission component 21. The first receiving groove 12 is an arc-shaped groove with an arc-shaped bottom surface. The first rotating shaft 11 is disposed on the side wall of the first receiving groove 12. A second arc-shaped structure 216 is provided at the end of the first transmission component 21 near the substrate 10. The arc-shaped outer surface of the second arc-shaped structure 216 is adapted to the arc-shaped bottom surface of the first receiving groove 12. Optionally, the second arc-shaped structure 216 can be provided with the pushing part 24. The arc-shaped inner surface of the second arc-shaped structure 216 can serve as the arc-shaped surface 241 of the pushing part 24, and the end of the second arc-shaped structure 216 can be provided with a pushing surface 242.

[0116] The second arc-shaped structure 216 has a guide groove 2161 on its side along the first axial direction. The guide groove 2161 is an arc-shaped groove with the same curvature as the arc-shaped outer surface of the second arc-shaped structure 216. The second arc-shaped structure 216 is slidably disposed within the first receiving groove 12, and the first rotating shaft 11 is disposed within the guide groove 2161. When the first transmission assembly 21 rotates relative to the substrate 10, the second arc-shaped structure 216 slides along the arc-shaped bottom surface of the first receiving groove 12, and the first rotating shaft 11 slides relative to the second arc-shaped structure 216 along the guide groove 2161, thereby realizing the rotational connection between the first transmission assembly 21 and the substrate 10 around the first axial direction. During the rotation of the first transmission assembly 21, the guide groove 2161 can guide the first transmission assembly 21, improving the stability of the rotation. In this embodiment, the first receiving groove 12 has a first rotating shaft 11 on both side walls, and the second arc-shaped structure 216 has guide grooves 2161 on both sides along the first axis. The two sides of the second arc-shaped structure 216 cooperate with the first rotating shafts 11 on both sides of the first receiving groove 12 through the guide grooves 2161, which can further improve the stability of the first transmission component 21 when rotating relative to the substrate 10.

[0117] In some optional embodiments, the rotating shaft device 200 may further include a rotating shaft cover 70, which is disposed on the side of the substrate 10 away from the first support plane of the substrate 10, thereby improving the overall structural strength of the rotating shaft device 200. Optionally, the rotating shaft cover 70 and the substrate 10 may be fixedly connected by fasteners such as screws, bolts, and rivets. The first transmission component 21 is provided with a first limiting structure, and at least one of the substrate 10 and the rotating shaft cover 70 is provided with a second limiting structure that cooperates with the first limiting structure. When the first transmission component 21 rotates, the limiting cooperation of the first and second limiting structures can limit the first transmission component 21, preventing it from slipping off the substrate 10, thereby improving the stability of the rotating shaft device 200 during rotation. It is understood that the second limiting structure may be provided on the substrate 10 or on the rotating shaft cover 70, and this disclosure is not limited in this regard.

[0118] Optionally, the first limiting structure includes at least one of a limiting groove and a limiting portion, and the second limiting structure includes at least one of a limiting groove and a limiting portion adapted to the first limiting structure.

[0119] For example, in some embodiments, the first transmission component 21 has a first limiting groove 217 on the side away from the first support member 22, and the base plate 10 has a first limiting portion 16 adapted to the first limiting groove 217, the first limiting portion 16 being disposed within the first limiting groove 217. When the first transmission component 21 rotates relative to the base plate 10, the first limiting portion 16 slides relative to the first transmission component 21 along the first limiting groove 217. During the rotation of the first transmission component 21, the cooperation between the first limiting portion 16 and the first limiting groove 217 can limit the first transmission component 21, preventing the first transmission component 21 from slipping off the base plate 10 and improving the stability of the first transmission component 21 during rotation.

[0120] For example, in other examples, the first transmission component 21 has a second limiting groove 218 on the side away from the first support member 22, and the side of the rotating shaft cover 70 has a second limiting part 71 adapted to the second limiting groove 218. When the first transmission component 21 rotates relative to the base plate 10 to a set position, the second limiting part 71 engages within the second limiting groove 218. Optionally, the second limiting part 71 may be formed on the side edge of the rotating shaft cover 70. In this embodiment, the second limiting groove 218 may be provided in the body 213 of the first transmission component 21.

[0121] The designated position may refer to the position where the first transmission component 21 rotates relative to the substrate 10 to the unfolded state of the rotating shaft device 200. Through the cooperation of the second limiting part 71 and the second limiting groove 218, the first transmission component 21 can be limited to prevent it from slipping off the substrate 10, thus holding it in that position and improving the stability of the rotating shaft device 200 in the unfolded state. Optionally, as... Figure 10 As shown, the second transmission component 23 may be provided with a third limiting groove 234 on the side away from the first support member 22, which is in a limiting cooperation with the second limiting part 71. When the first transmission component 21 rotates relative to the base plate 10 to a set position, the second limiting part 71 is simultaneously engaged in the second limiting groove 218 and the third limiting groove 234, which can further improve the stability of the rotating shaft device 200 in the unfolded state.

[0122] See Figure 16 and Figure 20 As shown, in some optional embodiments, the substrate 10 is provided with a first trajectory axis 13 parallel to the first axial direction, and the first support member 22 is provided with a first trajectory groove that slides with the first trajectory axis 13. Optionally, the first trajectory groove can be an arc-shaped trajectory groove, as shown in the figure as the first arc-shaped trajectory groove 223. It can also be a groove of other shapes, and this disclosure is not limited thereto. When the first support member 22 rotates relative to the first transmission assembly 21, the first trajectory axis 13 can slide along the first arc-shaped trajectory groove 223. Through the cooperation between the first arc-shaped trajectory groove 223 and the first trajectory axis 13, it can play an auxiliary guiding and auxiliary limiting role when the first support member 22 rotates, which can further improve the stability of the first support member 22 when rotating.

[0123] For example, in some examples, the first support member 22 is provided with a first trajectory structure 222, and the first trajectory structure 222 is provided with a first arc-shaped trajectory groove 223 on its side along the first axial direction. The base plate 10 is provided with a first trajectory shaft 13 parallel to the first axial direction, and the first trajectory shaft 13 is disposed in the first arc-shaped trajectory groove 223. The first arc-shaped trajectory groove 223 can be adapted to the rotation trajectory of the first support member 22 relative to the first transmission assembly 21. When the first support member 22 rotates relative to the first transmission assembly 21, the first trajectory shaft 13 slides along the first arc-shaped trajectory groove 223 relative to the first trajectory structure 222. Through the cooperation between the first arc-shaped trajectory groove 223 and the first trajectory shaft 13, it can play an auxiliary guiding and auxiliary limiting role when the first support member 22 rotates, which can further improve the stability of the first support member 22 when rotating. Optionally, there can be multiple first trajectory structures 222, which are spaced apart along the length direction of the first support member 22 and respectively cooperate with the first arc-shaped grooves 215 of the fixing members 214 of the two first transmission assemblies 21. The substrate 10 can be provided with multiple first trajectory axes 13 corresponding to multiple first trajectory structures 222, thereby improving the stability of the first support member 22 during rotation. The structure of the first arc-shaped trajectory groove 223 can be a single arc-shaped structure or a multi-segment arc-shaped structure, depending on the actual situation, and this disclosure does not impose any restrictions on it.

[0124] When assembling the first support member 22 with the first transmission assembly 21, the first transmission assembly 21 can be rotated until the main body 213 is flattened. Then, the first trajectory structure 222 of the first support member 22 can be clipped onto the first trajectory axis 13 of the base plate 10. After the first support member 22 is flattened, it can be aligned with the main body 213. Then, the first arc-shaped groove 215 of the fixing member 214 can be clipped into the first arc-shaped structure 221 of the first support member 22 and fixed to the main body 213 to complete the assembly.

[0125] Furthermore, a second receiving groove 17 can be provided on the surface of the substrate 10 near the first support member 22. The second receiving groove 17 is an arc-shaped groove with an arc-shaped bottom surface, and the first trajectory axis 13 is provided on the side wall of the second receiving groove 17. The first trajectory structure 222 can be configured as an arc-shaped structure adapted to the second receiving groove 17. The first trajectory structure 222 is slidably disposed in the second receiving groove 17 so that the first support member 22 can rotate relative to the substrate 10 through the cooperation of the first trajectory structure 222 and the second receiving groove 17.

[0126] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0127] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A rotating shaft device, characterized in that, include: Substrate and hinge assembly; The rotating shaft assembly includes a first transmission assembly, a second transmission assembly, and a first support member; the first transmission assembly is rotatably connected to the substrate about a first axis; the first support member is rotatably connected to the first transmission assembly about a second axis parallel to the first axis, and is movably connected to the second transmission assembly; the second transmission assembly is rotatably connected to the substrate about a third axis parallel to the first axis. A second support member is movably disposed on the substrate; the substrate includes a first support plane, the first support member includes a second support plane, and the second support member includes a third support plane. The rotating shaft device includes an extended state and a closed state; When in the unfolded state, the second support member is located in the first position, and the third support plane is located on the same plane as the second support plane; In the closed state, the second support plane forms a first preset angle with the first support plane; the second support member is located in a second position, which is closer to the substrate than the first position; The first support member and the second support member enclose the screen space.

2. The rotating shaft device according to claim 1, characterized in that, The substrate includes a first support plane, and the first support member includes a second support plane; The rotating shaft device includes an unfolded state and a closed state; in the unfolded state, the second support plane and the first support plane are located on the same plane; in the closed state, the second support plane and the first support plane form a first preset angle, and the first support member and the substrate enclose a screen space.

3. The rotating shaft device according to claim 2, characterized in that, The first transmission component includes a first support surface and a second support surface, wherein the second support surface and the first support surface form a second preset angle. In the unfolded state, the first support surface and the first support plane are located on the same plane; in the closed state, the second support surface abuts against the second support plane.

4. The rotating shaft device according to claim 1, characterized in that, The first transmission assembly includes a main body and a fixing member detachably connected to the main body. The main body is rotatably connected to the base plate about a first axis, and the first support member is rotatably connected to at least one of the fixing member and the main body about a second axis.

5. The rotating shaft device according to claim 4, characterized in that, At least one of the main body and the fixing member is provided with a first guide portion, and the first support member is provided with a second guide portion that slides with the first guide portion; or A first guide portion is formed between the main body and the fixing member, and the first support member is provided with a second guide portion that slides with the first guide portion.

6. The rotating shaft device according to claim 5, characterized in that, The first guide portion includes at least one of a groove and a slider, and the second guide portion includes at least one of a groove and a slider adapted to the first guide portion.

7. The rotating shaft device according to claim 4, characterized in that, The main body is provided with a first positioning part, and the fixing member is provided with a second positioning part that positions and cooperates with the first positioning part.

8. The rotating shaft device according to claim 1, characterized in that, It also includes a pivot cover, the substrate includes a first support plane, and the pivot cover is disposed on the side of the substrate away from the first support plane.

9. The rotating shaft device according to claim 8, characterized in that, The first transmission component is provided with a first limiting structure, and at least one of the base plate and the rotating shaft cover is provided with a second limiting structure that cooperates with the first limiting structure.

10. The rotating shaft device according to claim 9, characterized in that, The first limiting structure includes at least one of a limiting groove and a limiting portion, and the second limiting structure includes at least one of a limiting groove and a limiting portion adapted to the first limiting structure.

11. The rotating shaft device according to claim 1, characterized in that, The substrate is provided with a first trajectory axis parallel to the first axis, and the first support member is provided with a first trajectory groove that slides with the first trajectory axis; and / or One of the first support member and the second transmission assembly is provided with a second trajectory axis parallel to the third axis, and the other of the first support member and the second transmission assembly is provided with a second trajectory structure that slides with the second trajectory axis.

12. The rotating shaft device according to claim 1, characterized in that, The number of the rotating shaft assemblies is at least two sets, and at least one set of the rotating shaft assemblies is provided on each side of the substrate along the direction perpendicular to the first axis.

13. The rotating shaft device according to claim 12, characterized in that, At least one of the first transmission component and the second transmission component of the rotating shaft assembly located on one side of the substrate is provided with a first engaging member, and at least one of the first transmission component and the second transmission component of the rotating shaft assembly located on the other side of the substrate is provided with a second engaging member that engages with the first engaging member. The first engaging member located on one side of the substrate engages with the second engaging member located on the other side of the substrate to keep the rotating shaft assemblies on both sides of the substrate moving synchronously.

14. The rotating shaft device according to claim 13, characterized in that, It also includes at least one set of linkage transmission pairs, which are meshed between the first meshing member and the corresponding second meshing member located on both sides of the substrate.

15. The rotating shaft device according to claim 1, characterized in that, It also includes a damping mechanism that abuts against at least one of the first transmission assembly and the second transmission assembly.

16. The rotating shaft device according to claim 15, characterized in that, The damping mechanism includes a clamping plate and a first elastic member. The clamping plate abuts against at least one of the first transmission assembly and the second transmission assembly along a second direction. One end of the first elastic member abuts against the clamping plate, and the other end abuts against the base plate.

17. The rotating shaft device according to claim 16, characterized in that, At least one of the first transmission component and the second transmission component is provided with a first connecting hole that extends through the second direction, and the clamping plate is provided with a second connecting hole that extends through the second direction, and the second connecting hole is provided corresponding to the first connecting hole; The damping mechanism further includes a connecting shaft, which passes through the first connecting hole and the corresponding second connecting hole, and the first elastic element is sleeved on the connecting shaft.

18. The rotating shaft device according to claim 17, characterized in that, At least one of the first transmission assembly and the second transmission assembly is provided with a first cam structure, and the clamping plate is provided with a second cam structure adapted to the first cam structure, the second cam structure abutting against the first cam structure.

19. The rotating shaft device according to claim 1, characterized in that, It also includes a third transmission component, which is connected to the second support member and is used to drive the second support member to move relative to the substrate.

20. The rotating shaft device according to claim 19, characterized in that, The third transmission assembly includes a transmission member and a second elastic member connected to the transmission member; one side of the transmission member is connected to the side of the second support member near the substrate, and the other side is movably connected to the substrate; one end of the second elastic member is connected to the substrate, and the other end is connected to the transmission member.

21. The rotating shaft device according to claim 20, characterized in that, The transmission component includes a transmission part and a connecting part. One end of the connecting part is connected to the side of the second support member near the base plate, and the other end is connected to the transmission part. The transmission part is movably connected to the base plate, and one end of the second elastic member is connected to the base plate, while the other end is connected to the transmission part.

22. The rotating shaft device according to claim 21, characterized in that, The transmission part is provided with a third guide part, and the substrate is provided with a fourth guide part that guides and cooperates with the third guide part on the side near the second support member; The second elastic element is sleeved on the fourth guide portion, with one end of the second elastic element connected to the fourth guide portion and the other end connected to the transmission portion.

23. The rotating shaft device according to claim 1, characterized in that, The first transmission component is provided with a pushing part, which is used to drive the second support member to move from the second position to the first position when switching from the closed state to the unfolded state; in the unfolded state, the pushing part is supported on the side of the second support member close to the substrate.

24. A foldable electronic device, characterized in that, It includes a mid-frame housing, a flexible display screen, and a pivot device according to any one of claims 1-23; the flexible display screen is connected to the mid-frame housing, and the first transmission component of the pivot assembly is connected to the mid-frame housing.

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