Rotating shaft mechanism and foldable screen apparatus

Abstract

A rotating shaft mechanism and a foldable screen apparatus. The rotating shaft mechanism comprises a rotating shaft base (1), a first supporting member (2A), a first connector (3A) and a first sliding swing arm (4A), wherein the first supporting member is rotatably connected to the rotating shaft base; the first connector is rotatably connected to the first supporting member, and is provided with one of a first arc-shaped sliding rail (32A) and a first sliding portion (42A); and the first sliding swing arm is rotatably connected to the rotating shaft base, and is provided with the other one of the first arc-shaped sliding rail and the first sliding portion, the first sliding portion being slidably connected to the first arc-shaped sliding rail. The rotating shaft mechanism is configured to achieve a rotatable connection of two housings, and can improve the impact resistance of the foldable screen apparatus.

Description

Hinge mechanism and folding screen device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on April 2, 2024, with application number 202410398141.7 and invention name “Hinge mechanism and folding screen device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of folding screen devices, and in particular to a hinge mechanism and a folding screen device. Background Art

[0003] Foldable devices, such as mobile phones and tablets, feature a hinge mechanism that allows the device to switch between unfolded and folded positions. This hinge mechanism has numerous moving parts, and in scenarios like a drop, some of these parts can easily move relative to each other, potentially breaking or squeezing and damaging the foldable screen. This can result in reduced impact resistance for the device. Summary of the Invention

[0004] The present application provides a hinge mechanism and a folding screen device, which can improve the impact resistance of the folding screen device.

[0005] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, a hinge mechanism is provided for a foldable screen device. The hinge mechanism includes a hinge base, a first support member, a first connector, and a first sliding arm. The first support member is rotatably connected to the hinge base. The first connector is rotatably connected to the first support member and is provided with one of a first arc-shaped slide rail and a first sliding portion. The first sliding arm is rotatably connected to the hinge base and is provided with the other of the first arc-shaped slide rail and the first sliding portion. The first sliding portion is slidably connected to the first arc-shaped slide rail.

[0007] As a result, the first sliding portion and the first arc-shaped slide rail cooperate to form a virtual hinge structure. When the first connector rotates between the unfolded and folded states, the first support member rotates relative to the hinge base, and simultaneously the first support member rotates relative to the first connector. The first sliding arm rotates relative to the hinge base, and simultaneously the first sliding arm rotates relative to the first connector. The hinge base, first support member, first connector, and first sliding arm form a hinged four-bar mechanism. This hinged four-bar mechanism has one degree of freedom, a unique motion mode, and excellent structural stability, which can improve the impact resistance of foldable screen devices.

[0008] Optionally, the first arc-shaped slide rail can be a slot-type slide rail, and the first sliding portion can be slidably accommodated in the first arc-shaped slide rail. This structure is simple and can prevent the first arc-shaped slide rail from bulging outward, which is conducive to improving the compactness of the structure.

[0009] Optionally, the surface of the first connecting member facing the folding screen in the folding screen device is the first surface. The first arc-shaped slide rail is provided on the first connecting member. The first arc-shaped slide rail includes a first arc-shaped slide rail section and a second arc-shaped slide rail section. The two ends of the first arc-shaped slide rail section in the length direction are respectively the first end and the second end, and the second end is located on the side of the first end away from the rotating shaft base. The two ends of the second arc-shaped slide rail section in the length direction are respectively the third end and the fourth end, the third end is connected to the second end, and the fourth end is located on the side of the third end away from the first end. From the first end to the second end, the distance from the first arc-shaped slide rail section to the first surface gradually decreases, and from the third end to the fourth end, the distance from the second arc-shaped slide rail section to the first surface gradually increases. Alternatively, from the first end to the second end, the distance from the first arc-shaped slide rail section to the first surface gradually increases, and from the third end to the fourth end, the distance from the second arc-shaped slide rail section to the first surface gradually decreases. In this way, under the premise that the radius of the first arc-shaped slide rail is constant, the height occupied by the first arc-shaped slide rail along the thickness direction of the entire device in the deployed state can be reduced, which is conducive to reducing the thickness of the first connecting member along the entire device in the deployed state, thereby facilitating a thinner overall device. At the same time, under the premise that the thickness of the first connecting member is constant, the thickness of the solid material of the first connecting member located on the upper and lower sides of the first arc-shaped slide rail can be guaranteed, thereby ensuring structural strength.

[0010] Optionally, when the rotating shaft mechanism rotates from the unfolded state to the folded state, the first sliding portion slides from the first circular arc-shaped slide rail section to the second circular arc-shaped slide rail section.

[0011] Optionally, the hinge mechanism also includes a first decorative door panel, which is arranged on the side of the first connecting member facing away from the folding screen in the folding screen device, and the first decorative door panel is fixedly connected to the first sliding swing arm. The first decorative door panel can be used to shield and protect the first support member, the first connecting member and the first sliding swing arm, thereby ensuring a neat and consistent appearance. Moreover, in the process of the first sliding swing arm sliding along the first arc-shaped slide rail with the help of the first sliding portion, the first decorative door panel also swings along the arc-shaped extension path. During this process, the height of the activity space of the first decorative door panel along the thickness direction of the entire machine is relatively small, which is conducive to the thinning of the entire machine. Under the premise that the thickness of the entire machine is certain, since the height of the activity space of the first decorative door panel along the thickness direction of the entire machine is relatively small, the height of the first connecting member along the thickness direction of the entire machine can be increased, thereby ensuring the structural strength of the first connecting member.

[0012] Optionally, the first connecting member has a through-hole, and the first decorative door panel has a threaded hole. The hinge mechanism further includes a threaded fastener, the head of which is disposed on a side of the first connecting member facing away from the first decorative door panel, a portion of the shaft of the threaded fastener being received within the through-hole, and another portion of the shaft of the threaded fastener being threadedly engaged within the threaded hole. Thus, the threaded fastener secures the first decorative door panel to the first sliding arm. This connection method is convenient to operate, provides excellent connection stability, and facilitates disassembly and maintenance.

[0013] Optionally, a first sliding portion is provided on the first sliding swing arm, with a cam portion formed on at least one end of the first sliding portion along the length of the rotating shaft base. The rotating shaft mechanism also includes a first off-axis damping structure comprising a first sliding member, a first contact member, and at least one first elastic member. The first sliding member is slidably connected to the first connecting member along the length of the rotating shaft base, the first contact member is connected to the first sliding member, and the first elastic member is provided on a side of the first sliding member facing away from the cam portion. The first elastic member is configured to apply an elastic force directed toward the cam portion to the first sliding member, thereby causing the first contact member to contact the cam portion. Thus, when the rotating shaft mechanism switches between the unfolded and folded states, the first contact member rolls along the cam portion. The cam portion includes at least one convex portion and at least one concave portion. For example, the cam portion includes a convex portion and two concave portions located on opposite sides of the convex portion. Under the action of the first elastic member, the first contact member easily moves from the convex portion to the concave portion but is less likely to move from the concave portion to the convex portion, thereby stably retaining the first contact member in the at least one concave portion, thereby maintaining the rotating shaft mechanism in one or more stable states.

[0014] Optionally, the first off-axis damping structure also includes a first guide rod and a first avoidance member. The first guide rod is inserted into the first elastic member, and one end of the first guide rod is fixed to the first sliding member. The first avoidance member is located on the side of the first elastic member facing away from the first sliding member, and a sliding hole is provided in the first avoidance member. The axial direction of the sliding hole is parallel to the sliding direction of the first sliding member relative to the first connecting member, and the other end of the first guide rod can be slidably accommodated in the sliding hole. The first guide rod can be used to limit the first elastic member to prevent the first elastic member from being misplaced during the extension and retraction process. The first avoidance member can be used to accommodate the movable end of the first guide rod to prevent the first guide rod from interfering with other components during movement.

[0015] Optionally, the rotating shaft mechanism further includes a first internal damping structure, which includes a first damping swing arm, a first cam, a second cam, and a second elastic member. One end of the first damping swing arm is rotatably connected to the rotating shaft base, and the other end is slidably connected to the first connecting member. The first cam is disposed at the aforementioned end of the first damping swing arm, and the first cam has a first cam surface that extends around the rotation axis of the first damping swing arm relative to the rotating shaft base. The second cam is disposed on the side facing the first cam surface, and the second cam has a second cam surface that faces the first cam surface. The second elastic member is disposed on the side of the second cam facing away from the first cam, and the second elastic member is used to apply an elastic force directed toward the first cam to the second cam so that the second cam surface contacts the first cam surface. When the first damping swing arm rotates relative to the rotating shaft base, the first cam surface and the second cam surface rotate relative to each other. When the rotating shaft mechanism switches between the expanded state and the folded state, the second cam surface rotates relative to the first cam surface. The first cam surface includes at least one convex portion and at least one concave portion, and the second cam surface includes at least one convex portion and at least one concave portion. When the convex portion of the first cam surface engages with the concave portion of the second cam surface, and the concave portion of the first cam surface engages with the convex portion of the second cam surface, the first damping swing arm can remain stable, so that the rotating shaft mechanism can maintain one or more stable states.

[0016] Optionally, the rotating shaft mechanism further includes a synchronization assembly, comprising a first synchronization swing arm and a second synchronization swing arm. The first synchronization swing arm has one end rotatably connected to the rotating shaft base and the other end slidably connected to the first connecting member. The second synchronization swing arm has one end rotatably connected to the rotating shaft base and the other end slidably connected to the second connecting member. The first synchronization swing arm and the second synchronization swing arm can rotate synchronously and in opposite directions. The synchronization swing arms can rotate synchronously in opposite directions, allowing the connecting members of the rotating shaft mechanism to rotate synchronously, thereby improving the user experience.

[0017] Optionally, the first support member is an integrally formed structure. In this way, the first support member includes fewer parts, the assembly efficiency of the whole machine is higher, and the flatness of the surface of the first support member used to support the folding screen can be ensured.

[0018] Optionally, the material of the first support member is amorphous.

[0019] Optionally, the material of the first support member is zirconium-based liquid metal.

[0020] Optionally, the hinge mechanism further includes a shielding member that covers and is fixed to the surface of the hinge base that faces the folding screen in the folding screen device. The shielding member can shield the holes on the hinge base, thereby improving the support flatness of the folding screen.

[0021] Optionally, the shielding member is in sheet form, and the thickness of the shielding member is greater than or equal to 0.03 mm and less than or equal to 0.05 mm. In this way, the thickness of the shielding member is relatively thin, and the impact on the thickness of the entire device is relatively small.

[0022] In a second aspect, a foldable screen device is provided, comprising a foldable screen, a first housing, and a hinge mechanism as described in any of the above technical solutions. A first connector of the hinge mechanism is connected to the first housing, a portion of the foldable screen is disposed on the first housing, and another portion is disposed on the hinge base, first support member, and first connector of the hinge mechanism.

[0023] Since the folding screen device provided in this application includes the hinge mechanism as described in any of the above technical solutions, the two can solve the same technical problems and achieve the same effects.

[0024] Optionally, the hinge mechanism further includes a first decorative door panel, which is disposed on a side of the first connector facing away from the folding screen within the folding screen device and is fixedly connected to the first sliding arm. The first housing includes a first back cover, which includes a first back cover portion. The first back cover portion is located on a side of the first connector facing away from the folding screen, with a first gap defined between the first back cover portion and the first connector, and an end of the first decorative door panel away from the hinge base is accommodated within the first gap. This creates a certain overlap between the first decorative door panel and the first back cover, preventing the internal structure of the hinge mechanism from being exposed and facilitating a consistent appearance.

[0025] Optionally, when the hinge mechanism is in the deployed state, the first decorative door panel tilts toward the first connector from the end facing the hinge base to the end facing away from the hinge base. This allows the back of the hinge base to be roughly flush with the first back cover, thereby improving the flatness of the entire device in the deployed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a perspective view of a foldable screen device in an unfolded state provided by some embodiments of the present application;

[0027] FIG2 is a perspective view of the folding screen device shown in FIG1 in a folded state;

[0028] FIG3 is a perspective view of the folding screen device shown in FIG1 in a semi-folded state;

[0029] FIG4 a is a top view of the support device in the folding screen device shown in FIG1 to FIG3 ;

[0030] FIG4 b is a bottom view of the support device in the folding screen device shown in FIG1 to FIG3 ;

[0031] FIG5a is a schematic structural diagram of the rotating shaft mechanism in the supporting device from the perspective shown in FIG4a;

[0032] FIG5b is a schematic structural diagram of the rotating shaft mechanism in the supporting device from the perspective shown in FIG4b;

[0033] FIG5c is a schematic diagram of a partial structure of the rotating shaft mechanism shown in FIG5b;

[0034] Figure 5d is a three-dimensional view of the rotating shaft mechanism shown in Figure 5b;

[0035] FIG5e is a perspective view of the rotating shaft mechanism shown in FIG5c;

[0036] FIG5f is a schematic diagram of the exploded structure of the rotating shaft mechanism shown in FIG5d;

[0037] FIG5g is a three-dimensional view of the rotating shaft mechanism shown in FIG5f when viewed from a bottom perspective;

[0038] FIG6 is a schematic diagram of the cross-sectional structure of the rotating shaft mechanism shown in FIG5d along the AA direction;

[0039] FIG7 is a schematic cross-sectional view of the rotating shaft mechanism shown in FIG5 d along the BB direction;

[0040] FIG8a is a top view of the first support member in the rotating shaft mechanism shown in FIG5a to FIG5g;

[0041] FIG8b is a bottom view of the first support member shown in FIG8a;

[0042] FIG9a is a schematic diagram of the cross-sectional structure of the rotating shaft mechanism shown in FIG5d along the CC direction;

[0043] FIG9b is a schematic structural diagram of the rotating shaft mechanism shown in FIG9a when it is in a folded state;

[0044] FIG10 is a simplified structural diagram of an assembly consisting of a rotating shaft base, a first supporting member, a first connecting member, and a first sliding swing arm in the rotating shaft mechanism shown in FIG5a-5g;

[0045] FIG11a is a schematic diagram of the assembly structure of the rotating shaft mechanism, the first housing, and the second housing provided in some other embodiments of the present application;

[0046] FIG11b is a schematic structural diagram of the assembly structure shown in FIG11a when the rotating shaft mechanism is in a folded state;

[0047] FIG12 is a simplified structural diagram of an assembly consisting of a rotating shaft base, a first supporting member, a first connecting member, and a first sliding swing arm in the rotating shaft mechanism shown in FIG11a and FIG11b;

[0048] FIG13a is a diagram showing a scene in which the foldable screen device including the hinge mechanism shown in FIG11a and FIG11b falls to the ground;

[0049] FIG13b is a force analysis diagram of the internal rotating shaft mechanism of the foldable screen device shown in FIG13a when it falls to the ground;

[0050] FIG14a is a schematic diagram of the connection structure between the rotating shaft mechanism shown in FIG9a and the first housing and the second housing;

[0051] FIG14b is a schematic diagram of the connection structure between the rotating shaft mechanism shown in FIG9b and the first housing and the second housing;

[0052] FIG15 is a schematic diagram of the exploded structure of part of the rotating shaft mechanism shown in FIG5f;

[0053] FIG16 is a schematic diagram of the exploded structure of the first shaft internal damping structure and the second shaft internal damping structure in the rotating shaft mechanism shown in FIG15 ;

[0054] FIG17a is a top view of a rotating shaft mechanism provided in some other embodiments of the present application;

[0055] FIG17 b is a schematic diagram of the exploded structure of the first-shaft internal damping structure and the second-shaft internal damping structure in the rotating shaft mechanism shown in FIG17 a .

[0056] Reference Signs: 100, foldable screen device; 10, supporting device; 101, first housing; 1011, first back cover; 1011a, first back cover portion; 102, second housing; 1021, second back cover; 1021a, second back cover portion; 103, hinge mechanism; 1, hinge base; 11, upper base; 12, lower base; 00, screw; 13, arc-shaped slide groove; 14, arc-shaped slide groove; 15, arc-shaped slide groove; 16, arc-shaped slide groove; 2A, first support member; 21A, first sliding member; 22A, third sliding member; 2B, second support member; 21B, second sliding member; 22B, fourth sliding member; 3A, first connecting member; 31A, first fixing block; 311A, arc-shaped slide groove; 32A, first arc-shaped slide rail; 32A', first linear slide groove; S1, first surface; 321A, first arc-shaped slide rail segment; d1, first end; d2, second end; 322A, second arc-shaped slide rail segment; d3, third end; d4, fourth end; 33A, first accommodating groove; 34A, first slide groove; 35A, first guide groove; 36A, cover; 37A, second accommodating groove; 371A, first accommodating groove unit; 372A, second accommodating groove unit; 38A, second slide groove; 381A, first slide groove unit; 382A, second slide groove unit; 3B, second connecting member; 31B, second fixing block; 311B, arc-shaped slide groove; 32B, second arc-shaped slide rail; 32B', second linear slide groove; S2, second surface; 321B, third arc-shaped slide rail segment; d5, fifth end; d6, sixth end; 322B, fourth arc-shaped slide rail segment; d7, seventh end; d8, eighth end; 4A, first sliding arm; 41A, arc-shaped slide plate; 42A, first sliding portion; 4B, second sliding arm; 41B, arc-shaped slide plate; 42B, second sliding portion; 43A, sink; 44A, receiving groove; 5A, first decorative door panel; 51A, threaded hole; 52A, door panel body; 53A, boss; 5B, second decorative door panel; g1, first gap; g2, second gap; 6, threaded fastener; 7. Synchronizing assembly; 7A, first synchronous swing arm; 71A, first gear tooth; 72A, third sliding portion; 7B, second synchronous swing arm; 71B, second gear tooth; 8. Damping assembly; 81, off-axis damping structure; 81A, first off-axis damping structure; 811A, first sliding member; 812A, first contact member; 813A, first elastic member; 814A, first guide rod; 815A, first avoidance member; 81B, second off-axis damping structure; 82, in-axis damping structure; 82A, first in-axis damping structure; 821A, first damping swing arm; 8211A, first extension member; 8212A, second extension member; 8213A, third extension member; 822A, first cam; 823A, second cam; 824A, second elastic member; 825A, friction assembly; 8251A, rotating friction member;8252A, fixed friction member; 826A, rotating shaft; 827A, bushing; 828A, fourth sliding portion; 8281A, first sliding unit; 8282A, second sliding unit; 829A, stopper; 830A, pad; 82B, second shaft internal damping structure; 9, shielding member; 20, folding screen; 201, first portion; 202, second portion; 203, third portion. DETAILED DESCRIPTION

[0057] In the embodiments of the present application, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", and "eighth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh", and "eighth" may explicitly or implicitly include one or more of the features.

[0058] In the embodiments of the present application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0059] The present application provides a foldable screen device, which includes but is not limited to user equipment (UE) or terminal equipment, for example, a portable Android device (PAD), a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device, a vehicle-mounted device, or other mobile or fixed terminal. The present application uses the foldable screen device as an example of a handheld device with wireless communication capabilities, such as a mobile phone.

[0060] Please refer to Figures 1 to 3. Figure 1 is a stereoscopic view of the folding screen device 100 provided in some embodiments of the present application in the unfolded state, Figure 2 is a stereoscopic view of the folding screen device 100 shown in Figure 1 in the folded state, and Figure 3 is a stereoscopic view of the folding screen device 100 shown in Figure 1 in the semi-folded state. In this embodiment, the folding screen device 100 can be an outward-folding folding screen device. Of course, in other embodiments, the folding screen device 100 can also be an inward-folding folding screen device. This application is exemplified by the folding screen device 100 being an outward-folding folding screen device, which cannot be regarded as a special limitation on the present application.

[0061] The folding screen device 100 includes a supporting device 10 and a folding screen 20 .

[0062] Please refer to Figures 1-3 in conjunction with Figures 4a and 4b. Figure 4a is a top view of the support device 10 in the folding screen device 100 shown in Figures 1-3, and Figure 4b is a bottom view of the support device 10 in the folding screen device 100 shown in Figures 1-3. The support device 10 includes a first shell 101, a second shell 102, and a hinge mechanism 103 connected between the first shell 101 and the second shell 102. The hinge mechanism 103 is used to achieve relative rotation between the second shell 102 and the first shell 101 to support the folding screen device 100 to switch between the unfolded state, the semi-folded state, and the folded state.

[0063] 1-3 , the foldable screen 20 is supported on a first shell 101, a second shell 102, and a hinge mechanism 103. The portion of the foldable screen 20 supported on the first shell 101 is the first portion 201, the portion supported on the second shell 102 is the second portion 202, and the portion supported on the hinge mechanism 103 is the third portion 203. The foldable screen 20 can be an organic light-emitting diode (OLED) screen, a micro organic light-emitting diode (micro organic light-emitting diode) screen, a quantum dot light-emitting diode (QLED) screen, a liquid crystal display (LCD), and the like.

[0064] When the folding screen device 100 is in the unfolded state, please refer to Figure 1. The angle between the first part 201 and the second part 202 is the first angle, and the first angle can be 180°. It can be understood by those skilled in the art that the first angle can also be 90°, 120°, 210°, etc., and this application is not limited to this. In addition, the angles illustrated in this application are allowed to have slight deviations. For example, the first angle can be 180°, or it can be approximately 180°, such as 170°, 175°, 185° or 190°, etc. The same understanding can be made for other angles hereinafter. When the folding screen device 100 is in the unfolded state, a large-screen display can be achieved to provide users with richer information and bring users a better user experience.

[0065] When the foldable screen device 100 is in the folded state, referring to FIG. 2 , the first housing 101 and the second housing 102 can be completely folded to a state where they are substantially parallel to each other (a slight deviation is allowed) and stacked. At this point, the angle between the first housing 101 and the second housing 102 can be approximately considered to be 0°. The first portion 201 is located on the side of the first housing 101 facing away from the second housing 102, and the second portion 202 is located on the side of the second housing 102 facing away from the first housing 101. The angle between the first portion 201 and the second portion 202 is a second angle, which can be 360°. It will be understood by those skilled in the art that when the foldable screen device 100 is in the folded state, the second angle can also be 270°, 300°, 340°, etc., and this application does not limit this. When the foldable screen device 100 is in the folded state, the size of the foldable screen device 100 is reduced, making it easier to carry. At the same time, the foldable screen 20 is exposed, capable of displaying video and image information.

[0066] When the folding screen device 100 is in a semi-folded state, please refer to Figure 3. The angle between the first part 201 and the second part 202 is a third angle, and the third angle can be any angle value between the first angle and the second angle.

[0067] Please refer to Figures 5a-5g, Figure 5a is a structural schematic diagram of the rotating shaft mechanism 103 in the supporting device 10 from the perspective shown in Figure 4a, Figure 5b is a structural schematic diagram of the rotating shaft mechanism 103 in the supporting device 10 from the perspective shown in Figure 4b, Figure 5c is a partial structural schematic diagram of the rotating shaft mechanism 103 shown in Figure 5b, Figure 5d is a stereoscopic diagram of the rotating shaft mechanism 103 shown in Figure 5b, Figure 5e is a stereoscopic diagram of the rotating shaft mechanism 103 shown in Figure 5c, Figure 5f is a schematic diagram of the decomposed structure of the rotating shaft mechanism 103 shown in Figure 5d, and Figure 5g is a stereoscopic diagram of the rotating shaft mechanism 103 shown in Figure 5f from an upward perspective.

[0068] The hinge mechanism 103 may include a hinge base 1 , a first support member 2A, a second support member 2B, a first connecting member 3A, a second connecting member 3B, a first sliding swing arm 4A, and a second sliding swing arm 4B.

[0069] It should be noted that, for the convenience of description, in the following embodiments, unless otherwise specified, the "front side" used to describe the components in the hinge mechanism 103 refers to the side of the component being described facing the folding screen 20, the "front end face" refers to the surface of the component being described facing the folding screen 20, the "back side" refers to the side of the component being described that is away from the folding screen 20, and the "back side" refers to the surface of the component being described that is away from the folding screen 20.

[0070] The rotating shaft base 1 can be called a center beam, which is used to provide a position reference benchmark within the rotating shaft mechanism 103. The rotating shaft base 1 can be an integral structural member, or it can be formed by assembling multiple parts. The rotating shaft base 1 is in the shape of an elongated strip. Based on this, an XYZ coordinate system is established for the convenience of description. For example, please refer to Figures 5a-5g, which define the width direction of the rotating shaft base 1 as the X-axis direction, the length direction as the Y-axis direction, and the thickness direction as the Z-axis direction. It can be understood that the coordinate system setting of the rotating shaft base 1 can be flexibly set according to actual needs, and no specific limitation is made here.

[0071] Referring to Figure 6 , in conjunction with Figures 5f and 5g , Figure 6 is a schematic cross-sectional view of the rotating shaft mechanism 103 shown in Figure 5d along the AA axis. The rotating shaft base 1 may include an upper base 11 and a lower base 12. The upper base 11 is located in front of the lower base 12, and the upper base 11 and the lower base 12 may be fixedly connected using at least one screw 00. In other embodiments, the upper base 11 and the lower base 12 may also be fixedly connected using welding, clamping, or other methods, which are not specifically limited in this application.

[0072] In this way, the rotating shaft base 1 is formed by assembling at least the upper base 11 and the lower base 12 , which facilitates the assembly of the support member and the sliding swing arm on the rotating shaft base 1 .

[0073] In some embodiments, referring to Figures 5a, 5f, 5g and 6, the hinge mechanism 103 further includes a shielding member 9. The shielding member 9 covers and is fixed to the front end surface of the hinge base 1. Specifically, the shielding member 9 covers and is fixed to the surface of the upper base 11 that faces away from the lower base 12. Optionally, the shielding member 9 can be glued and fixed to the surface of the upper base 11 that faces away from the lower base 12, or can be welded and fixed to the surface of the upper base 11 that faces away from the lower base 12. This application does not impose specific limitations on this. With the help of the shielding member 9, the holes on the hinge base 1 can be shielded, and the flatness of the support for the folding screen can be improved.

[0074] In some embodiments, an adhesive layer (not shown) is provided between the shielding member 9 and the shaft base 1, by which the shielding member 9 is bonded to the shaft base 1. The adhesive layer has good uniformity, which can ensure the bonding effect and achieve good folding and light and shadow effects.

[0075] In some embodiments, shielding member 9 is sheet-shaped and made of metal, including but not limited to stainless steel, copper alloy, aluminum alloy, titanium alloy, etc. Thus, while ensuring the structural strength of shielding member 9, the thickness of shielding member 9 can be reduced, with minimal impact on the thickness of the entire device.

[0076] In some embodiments, the thickness of the shielding member 9 is greater than or equal to 0.03 mm and less than or equal to 0.05 mm. Optionally, the thickness of the shielding member 9 can be 0.03 mm, 0.04 mm, or 0.05 mm. In this way, the thickness of the shielding member 9 is relatively thin, and the impact on the thickness of the entire device is relatively small.

[0077] Please refer to Figures 5a to 5g. The first support member 2A and the second support member 2B are respectively arranged on both sides of the shaft base 1 in the width direction. The front end surface of the first support member 2A and the front end surface of the second support member 2B are used to fix the folding screen to support the folding screen. The first support member 2A is rotatably connected to the shaft base 1. For example, please refer to Figure 7, and refer to Figures 5f and 5g in combination. Figure 7 is a schematic diagram of the cross-sectional structure of the shaft mechanism 103 shown in Figure 5d along the BB direction. One side of the first support member 2A in the width direction can be rotatably connected to the circular arc groove 13 of the shaft base 1 by means of the first sliding member 21A, so that the first support member 2A can rotate around the center line of the circular arc groove 13 relative to the shaft base 1.

[0078] Similarly, the second support member 2B is rotatably connected to the shaft base 1. For example, referring to Figures 5f and 5g, one side of the second support member 2B in the width direction can be rotatably connected to the arc-shaped sliding groove 14 of the shaft base 1 via a second sliding member 21B, thereby rotatably connecting the second support member 2B to the shaft base 1. In this way, the first support member 2A and the second support member 2B can each rotate relative to the shaft base 1.

[0079] In the above embodiment, the first support member 2A and the second support member 2B can be an integrally formed structure, or can be formed by connecting multiple sections. In some embodiments, please refer to Figures 8a and 8b, Figure 8a is a top view of the first support member 2A in the rotating shaft mechanism 103 shown in Figures 5a to 5g, and Figure 8b is a bottom view of the first support member 2A shown in Figure 8a. The first support member 2A can be an integrally formed structure. In this way, the first support member 2A includes fewer parts, and the assembly efficiency of the whole machine is higher. At the same time, the flatness of the surface of the first support member 2A used to support the folding screen can be ensured. Similarly, the second support member 2B can also be an integrally formed structure to improve the assembly efficiency of the whole machine and ensure the flatness of the surface of the second support member 2B used to support the folding screen.

[0080] In some embodiments, the material of the first support member 2A and the second support member 2B can be an amorphous material (also called liquid metal). The amorphous material can be a zirconium-based liquid metal. The first support member 2A and the second support member 2B can be integrally formed by die-casting. In this way, the structural strength of the first support member 2A and the second support member 2B is high, and the dimensional accuracy is high. Of course, in other embodiments, the material of the first support member 2A and the second support member 2B can also be conventional metals such as stainless steel and aluminum alloy, and this application does not specifically limit this.

[0081] Please continue to refer to Figures 5a-5g. The first connecting member 3A and the second connecting member 3B are also respectively arranged on both sides of the width direction of the rotating shaft base 1, and the first connecting member 3A and the first supporting member 2A are located on the same side of the width direction of the rotating shaft base 1, and the second connecting member 3B and the second supporting member 2B are located on the same side of the width direction of the rotating shaft base 1.

[0082] The first connecting member 3A is rotatably connected to the first supporting member 2A. For example, please refer to Figures 5f and 5g. The rotating shaft mechanism 103 also includes a first fixed block 31A, which is fixed to the first connecting member 3A. Optionally, the first fixed block 31A can be fixed to the first connecting member 3A using threaded fasteners. Before the first fixed block 31A is fixedly connected to the first connecting member 3A, a positioning column and a positioning hole can be used between the first fixed block 31A and the first connecting member 3A to achieve pre-positioning. The first fixed block 31A is provided with an arc-shaped slide 311A, which is rotatably connected to the third sliding member 22A of the first supporting member 2A, so that the first connecting member 3A can rotate relative to the first supporting member 2A around the center line of the arc-shaped slide 311A.

[0083] Similarly, the second connecting member 3B can be rotatably connected to the second support member 2B. For example, please refer to Figures 5f and 5g. The rotating shaft mechanism 103 also includes a second fixed block 31B, which is fixed to the second connecting member 3B. Optionally, the second fixed block 31B can be fixed to the second connecting member 3B using threaded fasteners. Before the second fixed block 31B is fixedly connected to the second connecting member 3B, a positioning column and a positioning hole can also be used between the second fixed block 31B and the second connecting member 3B to achieve pre-positioning. The second fixed block 31B is provided with an arc-shaped slot 311B, which can be rotatably connected to the fourth sliding member 22B of the second support member 2B, so that the second connecting member 3B can rotate relative to the second support member 2B around the center line of the arc-shaped slot 311B.

[0084] The first sliding swing arm 4A is rotatably connected to the rotating shaft base 1. In some embodiments, please refer to Figures 5f and 5g. The first sliding swing arm 4A has an arc-shaped slide 41A, and the rotating shaft base 1 is provided with an arc-shaped slide 15. The arc-shaped slide 41A can be slidably accommodated in the arc-shaped slide 15, so that the first sliding swing arm 4A can rotate relative to the rotating shaft base 1 around the center line of the arc-shaped slide 15. Similarly, the second sliding swing arm 4B is rotatably connected to the rotating shaft base 1. In some embodiments, please refer to Figures 5f and 5g. The second sliding swing arm 4B has an arc-shaped slide 41B, and the rotating shaft base 1 is provided with an arc-shaped slide 16. The arc-shaped slide 41B can be slidably accommodated in the arc-shaped slide 16, so that the second sliding swing arm 4B can rotate relative to the rotating shaft base 1 around the center line of the arc-shaped slide 16.

[0085] Please refer to Figures 5f and 5g, and in conjunction with Figures 9a and 9b, Figure 9a is a schematic cross-sectional structural diagram of the rotating shaft mechanism 103 shown in Figure 5d along the CC direction, with the rotating shaft mechanism 103 shown in Figure 9a being in an unfolded state, and Figure 9b is a schematic structural diagram of the rotating shaft mechanism 103 shown in Figure 9a when it is in a folded state. The first connecting member 3A can be provided with a first arc-shaped slide rail 32A, the center line corresponding to the first arc-shaped slide rail 32A being a first center line (not shown in the figure), and the first center line is parallel to the Y-axis direction. The first sliding swing arm 4A can also include a first sliding portion 42A, which is slidably connected to the first arc-shaped slide rail 32A.

[0086] In other embodiments, the positions of the first arc-shaped slide rail 32A and the first sliding portion 42A can be interchanged, that is, the first arc-shaped slide rail 32A is disposed on the first sliding swing arm 4A, and the first sliding portion 42A is disposed on the first connecting member 3A. This embodiment and the following embodiments are further described based on the first arc-shaped slide rail 32A being disposed on the first connecting member 3A and the first sliding portion 42A being disposed on the first sliding swing arm 4A. This should not be considered as a special limitation to this application. When the first arc-shaped slide rail 32A is disposed on the first connecting member 3A and the first sliding portion 42A is disposed on the first sliding swing arm 4A, the layout of the rotating shaft mechanism 103 is more reasonable.

[0087] The first arc-shaped slide rail 32A can be a slot-type slide rail or a slide rod-type slide rail. This application uses the first arc-shaped slide rail 32A as an example of a slot-type slide rail. Based on this, the first sliding portion 42A can be slidably accommodated in the first arc-shaped slide rail 32A. This structure is simple and can avoid the first arc-shaped slide rail 32A from bulging outward, which is conducive to improving the compactness of the structure.

[0088] Similarly, the second connecting member 3B is provided with a second arc-shaped rail 32B. The centerline corresponding to the second arc-shaped rail 32B is a second centerline (not shown), which is parallel to the Y-axis. The second sliding swing arm 4B also includes a second sliding portion 42B, which is slidably connected to the second arc-shaped rail 32B.

[0089] In other embodiments, the second circular arc-shaped guide rail 32B and the second sliding portion 42B may be interchanged, that is, the second circular arc-shaped guide rail 32B is disposed on the second sliding arm 4B, and the second sliding portion 42B is disposed on the second connecting member 3B. This embodiment and the following embodiments are further described based on the second circular arc-shaped guide rail 32B being disposed on the second connecting member 3B and the second sliding portion 42B being disposed on the second sliding arm 4B. This should not be considered a special limitation of the present application. When the second circular arc-shaped guide rail 32B is disposed on the second connecting member 3B and the second sliding portion 42B is disposed on the second sliding arm 4B, the layout of the rotating shaft mechanism 103 is more reasonable.

[0090] The second arc-shaped slide rail 32B can be a slot-type slide rail or a slide rod-type slide rail. This application uses the second arc-shaped slide rail 32B as an example of a slot-type slide rail. Based on this, the second sliding portion 42B can be slidably accommodated in the second arc-shaped slide rail 32B. This structure is simple and can avoid the second arc-shaped slide rail 32B from bulging outward, which is conducive to improving the compactness of the structure.

[0091] Thus, the first sliding portion 42A cooperates with the first arc-shaped slide rail 32A to form a virtual hinge structure, and the second sliding portion 42B cooperates with the second arc-shaped slide rail 32B to form a virtual hinge structure. When the first connecting member 3A and the second connecting member 3B rotate between the unfolded state and the folded state, the first support member 2A rotates relative to the hinge base 1, and the first support member 2A rotates relative to the first connecting member 3A; the first sliding swing arm 4A rotates relative to the hinge base 1, and the first sliding swing arm 4A also rotates relative to the first connecting member 3A; the second support member 2B rotates relative to the hinge base 1, and the second support member 2B rotates relative to the second connecting member 3B; the second sliding swing arm 4B rotates relative to the hinge base 1, and the second sliding swing arm 4B also rotates relative to the second connecting member 3B.

[0092] Please refer to Figure 10, which is a simplified structural diagram of the assembly comprising the pivot base 1, first support member 2A, first connector 3A, and first sliding arm 4A in the pivot mechanism 103 shown in Figures 5a-5g. This assembly is a hinged four-bar linkage, which has one degree of freedom, a single motion mode, excellent structural stability, and superior impact resistance. The assembly comprising the pivot base 1, second support member 2B, second connector 3B, and second sliding arm 4B is also a hinged four-bar linkage. The simplified structural diagram of this hinged four-bar linkage is identical to that shown in Figure 10 and is not further described here.

[0093] To further illustrate the above technical effects, as a comparative example, please refer to Figures 11a and 11b. Figure 11a is a schematic diagram of the assembly structure of the rotating shaft mechanism 103, the first shell 101, and the second shell 102 provided in some embodiments of the present application. Figure 11a shows the rotating shaft mechanism 103 in an unfolded state. Figure 11b is a schematic diagram of the structure of the rotating shaft mechanism 103 in a folded state in the assembly structure shown in Figure 11a. In this embodiment, the first connecting member 3A is provided with a first linear slide 32A', and the first sliding portion 42A is slidably received in the first linear slide 32A'. The second connecting member 3B is provided with a second linear slide 32B', and the second sliding portion 42B is slidably received in the second linear slide 32B'. Thus, referring to Figure 12, Figure 12 is a simplified structural diagram of the assembly comprising the pivot base 1, first support member 2A, first connector 3A, and first sliding swing arm 4A in the pivot mechanism 103 shown in Figures 11a and 11b. This assembly also has one degree of freedom and a unique motion mode, similarly ensuring smooth movement of the pivot mechanism 103 during transitions between the unfolded and folded states. The simplified structural diagram of the assembly comprising the pivot base 1, second support member 2B, second connector 3B, and second sliding swing arm 4B is identical to that shown in Figure 12 and will not be further described here.

[0094] In some scenarios, such as when the foldable screen device 100 is in a folded state and falls to the ground, please refer to Figures 13a and 13b. Figure 13a shows the scene of the foldable screen device 100 including the hinge mechanism 103 shown in Figures 11a and 11b falling to the ground, and Figure 13b shows the force analysis diagram of the internal hinge mechanism 103 of the foldable screen device 100 shown in Figure 13a when it falls to the ground. At the moment the foldable screen device 100 falls to the ground, the hinge base 1 is subjected to an impact force F from the ground. The first shell 101 and the second shell 102 continue to move downward under the action of inertia and apply impact forces F1 and F2 to the first connecting member 3A and the second connecting member 3B, respectively. Since the first connecting member 3A and the first sliding arm 4A, as well as the second connecting member 3B and the second sliding arm 4B are slidably connected by a linear sliding pair, the stability of the linear sliding pair is relatively low. Under the action of the impact forces F1 and F2, the sliding pairs can slide relatively relatively, so that the part of the first connecting member 3A connected to the first sliding arm 4A and the part of the second connecting member 3B connected to the second sliding arm 4B can continue to move downward, thereby squeezing the third part 203 of the folding screen 20 downward and forcing the third part 203 to be deformed to a large extent or even damaged, resulting in low impact resistance of the folding screen device 100.

[0095] Compared with the embodiment shown in Figures 11a and 11b, since the first connecting member 3A and the first sliding swing arm 4A and the second connecting member 3B and the second sliding swing arm 4B in the rotating shaft mechanism 103 shown in Figures 9a and 9b are slidably connected using an arc-shaped sliding pair, the arc-shaped sliding pair has higher stability. Under the action of the impact forces F1 and F2 in the above scenario, the possibility of relative sliding of the rotating pair is small, and it is not easy to compress the third part 203. Therefore, the impact resistance of the folding screen device 100 is higher.

[0096] In some embodiments, please refer specifically to FIG9a , in which the front end surface of the first connecting member 3A is defined as the first surface S1. Based on this, the first arc-shaped slide rail 32A includes a first arc-shaped slide rail section 321A and a second arc-shaped slide rail section 322A. The two ends of the first arc-shaped slide rail section 321A in the length direction are respectively a first end d1 and a second end d2, with the second end d2 being located on the side of the first end d1 away from the rotating shaft base 1. The two ends of the second arc-shaped slide rail section 322A in the length direction are respectively a third end d3 and a fourth end d4, with the third end d3 connected to the second end d2, and the fourth end d4 being located on the side of the third end d3 away from the first end d1.

[0097] From the first end d1 to the second end d2, the distance between the first arc-shaped rail section 321A and the first surface S1 gradually decreases; from the third end d3 to the fourth end d4, the distance between the second arc-shaped rail section 322A and the first surface S1 gradually increases. In other words, the first arc-shaped rail 32A arches toward the first surface S1.

[0098] In this way, under the premise that the radius of the first arc-shaped slide rail 32A is constant, the height occupied by the first arc-shaped slide rail 32A along the Z-axis in the deployed state can be reduced, which helps to reduce the thickness of the first connecting member 3A along the Z-axis in the deployed state, thereby facilitating a thinner device. At the same time, under the premise that the thickness of the first connecting member 3A along the Z-axis is constant, the thickness of the solid material on the first connecting member 3A located on the upper and lower sides of the first arc-shaped slide rail 32A can be guaranteed, thereby ensuring structural strength.

[0099] In other embodiments, the distance between the first arc-shaped rail section 321A and the first surface S1 may gradually increase from the first end d1 to the second end d2, and the distance between the second arc-shaped rail section 322A and the first surface S1 may gradually decrease from the third end d3 to the fourth end d4. In other words, the first arc-shaped rail 32A arches away from the first surface S1. This also reduces the height occupied by the first arc-shaped rail 32A along the Z-axis, facilitating a thinner device and ensuring the structural strength of the first connector 3A.

[0100] Similarly, please continue to refer to Figure 9a, which defines the front end surface of the second connecting member 3B as the second surface S2. Based on this, the second arc-shaped slide rail 32B includes a third arc-shaped slide rail section 321B and a fourth arc-shaped slide rail section 322B. The two ends of the third arc-shaped slide rail section 321B in the length direction are respectively the fifth end d5 and the sixth end d6, and the sixth end d6 is located on the side of the fifth end d5 away from the shaft base 1. The two ends of the fourth arc-shaped slide rail section 322B in the length direction are respectively the seventh end d7 and the eighth end d8, and the seventh end d7 is connected to the sixth end d6, and the eighth end d8 is located on the side of the seventh end d7 away from the fifth end d5.

[0101] From the fifth end d5 to the sixth end d6, the distance between the third arc-shaped rail section 321B and the second surface S2 gradually decreases; from the seventh end d7 to the eighth end d8, the distance between the fourth arc-shaped rail section 322B and the second surface S2 gradually increases. In other words, the second arc-shaped rail 32B arches toward the second surface S2.

[0102] In this way, under the premise that the radius of the second arc-shaped slide rail 32B is constant, the height occupied by the second arc-shaped slide rail 32B along the Z-axis in the deployed state can be reduced, which helps to reduce the thickness of the second connecting member 3B along the Z-axis in the deployed state, thereby facilitating a thinner device. At the same time, under the premise that the thickness of the second connecting member 3B along the Z-axis is constant, the thickness of the solid material of the second connecting member 3B located on the upper and lower sides of the second arc-shaped slide rail 32B can be guaranteed, thereby ensuring structural strength.

[0103] In some other embodiments, the distance between the third arc-shaped rail segment 321B and the second surface S2 gradually increases from the fifth end d5 to the sixth end d6, while the distance between the fourth arc-shaped rail segment 322B and the second surface S2 gradually decreases from the seventh end d7 to the eighth end d8. In other words, the second arc-shaped rail 32B arches away from the second surface S2. This also reduces the height occupied by the second arc-shaped rail 32B along the Z-axis, facilitating a slimmer device and ensuring the structural strength of the second connector 3B.

[0104] In some embodiments, referring to Figures 9a and 9b , based on the arching of the first arcuate rail 32A toward the first surface S1, when the hinge mechanism 103 rotates from the deployed state to the folded state, the first sliding portion 42A slides from the first arcuate rail segment 321A to the second arcuate rail segment 322A. Thus, when the first connector 3A rotates 90° from the deployed state to the folded state, the first sliding arm 4A rotates relative to the first connector 3A, and the rotation angle of the first sliding arm 4A from the deployed state to the folded state is greater than 90°.

[0105] Similarly, referring to Figures 9a and 9b, as the second arcuate rail 32B arches toward the second surface S2, when the hinge mechanism 103 rotates from the deployed state to the folded state, the second sliding portion 42B slides from the third arcuate rail segment 321B to the fourth arcuate rail segment 322B. Consequently, when the second connecting member 3B rotates 90° from the deployed state to the folded state, the second sliding arm 4B rotates relative to the second connecting member 3B, resulting in the second sliding arm 4B rotating by a greater than 90° angle from the deployed state to the folded state.

[0106] In other embodiments, based on the first arcuate rail 32A being arched away from the first surface S1, when the hinge mechanism 103 rotates from the deployed state to the folded state, the first sliding portion 42A slides from the first arcuate rail segment 321A to the second arcuate rail segment 322A. Thus, when the first connector 3A rotates 90° from the deployed state to the folded state, the first sliding arm 4A rotates relative to the first connector 3A, and the rotation angle of the first sliding arm 4A from the deployed state to the folded state is less than 90°.

[0107] As the second arcuate rail 32B arches away from the second surface S2, when the hinge mechanism 103 rotates from the deployed state to the folded state, the second sliding portion 42B slides from the third arcuate rail segment 321B to the fourth arcuate rail segment 322B. Consequently, when the second connecting member 3B rotates 90° from the deployed state to the folded state, the second sliding arm 4B rotates relative to the second connecting member 3B. The rotation angle of the second sliding arm 4B from the deployed state to the folded state is less than 90°.

[0108] In some embodiments, please refer to Figures 9a and 9b in particular, and refer to Figures 5b, 5d, 5f and 5g in combination. The rotating shaft mechanism 103 may further include a first decorative door panel 5A and a second decorative door panel 5B.

[0109] The first decorative door panel 5A is arranged on the back side of the first connecting member 3A, and the first decorative door panel 5A is fixedly connected to the first sliding arm 4A. With the help of the first decorative door panel 5A, the first support member 2A, the first connecting member 3A and the first sliding arm 4A can be shielded and protected to ensure the neatness and consistency of the appearance. Moreover, in the process of the first sliding arm 4A sliding along the first arc-shaped slide rail 32A with the help of the first sliding part 42A, the first decorative door panel 5A also swings along the arc-shaped extension path. During this process, the height of the activity space of the first decorative door panel 5A along the thickness direction of the whole machine is relatively small, which is conducive to the thinning of the whole machine. Under the premise that the thickness of the whole machine is certain, since the height of the activity space of the first decorative door panel 5A along the thickness direction of the whole machine is relatively small, the height of the first connecting member 3A along the thickness direction of the whole machine can be increased, which can ensure the structural strength of the first connecting member 3A.

[0110] In some embodiments, please refer to Figures 14a and 14b. Figure 14a is a schematic diagram of the connection structure between the hinge mechanism 103 shown in Figure 9a and the first and second housings 101, 102. Figure 14b is a schematic diagram of the connection structure between the hinge mechanism 103 shown in Figure 9b and the first and second housings 101, 102. In this embodiment, the first housing 101 includes a first back cover 1011, which includes a first back cover portion 1011a. The first back cover portion 1011a is located on the back side of the first connector 3A, and a first gap g1 is defined between the first back cover portion 1011a and the first connector 3A. The end of the first decorative door panel 5A away from the hinge base 1 is accommodated in the first gap g1. When the first sliding arm 4A slides along the first arc-shaped guide rail 32A, the end of the first decorative door panel 5A away from the hinge base 1 moves along the first gap g1. In this way, there is a certain overlap between the first decorative door panel 5A and the first back cover 1011, which can prevent the internal structure of the hinge mechanism 103 from being exposed, and is conducive to ensuring the consistency of the appearance.

[0111] In some embodiments, referring to FIG. 14a , when the hinge mechanism 103 is in the deployed state, the first decorative door panel 5A tilts toward the first connector 3A from the end facing the hinge base 1 to the end away from the hinge base 1. This allows the back surface of the hinge base 1 to be roughly flush with the first back cover 1011, thereby enhancing the flatness of the entire device in the deployed state.

[0112] To illustrate the technical effects of combining the aforementioned features, in a comparative example, see Figure 11a , the first linear guide slot 32A' slopes forward from one end toward the hinge base 1 to the end away from the hinge base 1, thereby preventing the first decorative door panel 5A from interfering with the first back cover 1011 during movement between the unfolded and folded states. To prevent interference between the first decorative door panel 5A and the first connector 3A, an area Q is removed from the first connector 3A to clear the first decorative door panel 5A. This results in a lower structural strength for the first connector 3A, making it difficult to achieve a thinner device. When the first arc-shaped slide rail 32A arches toward the first surface S1, when the hinge mechanism 103 rotates from the unfolded state to the folded state, the first sliding portion 42A slides from the first arc-shaped slide rail section 321A to the second arc-shaped slide rail section 322A, driving the end of the first decorative door panel 5A away from the hinge base 1 to swing toward the first back cover portion 1011a relative to the end of the first decorative door panel 5A facing the hinge base 1, so as to avoid the first decorative door panel 5A interfering with the first connecting member 3A during the movement between the unfolded state and the folded state, thereby ensuring the structural strength of the first connecting member 3A, which is conducive to the thinning of the entire machine.

[0113] Similarly, the second decorative door panel 5B is arranged on the back side of the second connecting member 3B, and the second decorative door panel 5B is fixedly connected to the second sliding arm 4B. The second decorative door panel 5B can shield and protect the second support member 2B, the second connecting member 3B and the second sliding arm 4B, ensuring the neatness and consistency of the appearance. Moreover, when the second sliding arm 4B slides along the second arc-shaped slide rail 32B with the help of the second sliding portion 42B, the second decorative door panel 5B also swings along the arc-shaped extension path. During this process, the height of the activity space of the second decorative door panel 5B along the thickness direction of the whole machine is relatively small, which is conducive to the thinning of the whole machine. Under the premise of a certain thickness of the whole machine, since the height of the activity space of the second decorative door panel 5B along the thickness direction of the whole machine is relatively small, the height of the second connecting member 3B along the Z-axis direction can be increased, which can ensure the structural strength of the second connecting member 3B.

[0114] In some embodiments, particularly referring to FIG. 11a , the second housing 102 includes a second back cover 1021, which includes a second back cover portion 1021a. The second back cover portion 1021a is located on the back side of the second connector 3B, and a second gap g2 is defined between the second back cover portion 1021a and the second connector 3B. The end of the second decorative door panel 5B, which is distal to the pivot base 1, is accommodated within the second gap g2. When the second sliding arm 4B slides along the second arc-shaped guide rail 32B, the end of the second decorative door panel 5B, which is distal to the pivot base 1, moves along the second gap g2. This creates a certain overlap between the second decorative door panel 5B and the second back cover 1021, preventing the internal structure of the pivot mechanism 103 from being exposed and ensuring a consistent appearance.

[0115] In some embodiments, referring to FIG. 14a , when the hinge mechanism 103 is in the deployed state, the second decorative door panel 5B tilts toward the second connector 3B from the end facing the hinge base 1 to the end facing away from the hinge base 1. This allows the back surface of the hinge base 1 to be roughly flush with the second back cover 1021, enhancing the flatness of the entire device in the deployed state. Furthermore, when the second arc-shaped guide rail 32B arches toward the second surface S2, when the hinge mechanism 103 rotates from the deployed state to the folded state, the second sliding portion 42B slides from the third arc-shaped guide rail segment 321B to the fourth arc-shaped guide rail segment 322B, causing the end of the second decorative door panel 5B facing away from the hinge base 1 to swing toward the second back cover portion 1021a relative to the end of the second decorative door panel 5B facing the hinge base 1. This prevents the second decorative door panel 5B from interfering with the second connector 3B during movement between the deployed and folded states, thereby ensuring the structural strength of the second connector 3B and contributing to a thinner device.

[0116] In any of the above embodiments, the first decorative door panel 5A and the first sliding swing arm 4A, as well as the second decorative door panel 5B and the second sliding swing arm 4B can be fixedly connected by welding, clamping, bonding, or threaded connection.

[0117] In some embodiments, please refer back to Figures 5f and 5g. The first sliding arm 4A is provided with a through hole, and the first decorative door panel 5A is provided with a threaded hole 51A (as shown in Figure 5g). The pivot mechanism 103 also includes a threaded fastener 6. Optionally, the threaded fastener 6 can be a screw. The threaded fastener 6 includes a head and a rod. The head of the threaded fastener 6 is located on the front side of the first sliding arm 4A. A portion of the rod of the threaded fastener 6 is accommodated in the through hole, and the other portion is threadedly connected to the threaded hole 51A. In this way, the first decorative door panel 5A and the first sliding arm 4A are fixed together with the help of the threaded fastener 6. This connection method is easy to operate, has excellent connection stability, and is convenient for disassembly and maintenance.

[0118] In some embodiments, particularly referring to Figure 5g , a recessed groove 43A is formed on the front end of the first sliding arm 4A, and a through hole is provided at the bottom of the recessed groove 43A. The head of the threaded fastener 6 is accommodated within the recessed groove 43A. This reduces the height of the head of the threaded fastener 6 protruding from the surface of the first sliding arm 4A, contributing to a thinner device.

[0119] In some embodiments, as shown in conjunction with Figure 5g , the first decorative door panel 5A includes a door panel body 52A and a boss 53A. Boss 53A is disposed on the surface of door panel body 52A facing first sliding arm 4A. Threaded hole 51A is disposed at least on boss 53A. This reduces the thickness of door panel body 52A, contributing to a slimmer design, while also ensuring the connection strength of threaded fastener 6 within threaded hole 51A.

[0120] In some embodiments, please refer to Figure 5f. The surface of the first sliding arm 4A facing the door panel body 52A is provided with a receiving groove 44A, and the boss 53A is received in the receiving groove 44A, thereby avoiding thickness overlap and facilitating the thinning of the entire machine.

[0121] The second decorative door panel 5B and the second sliding arm 4B can also be connected by means of threaded fasteners, and the method of connecting the second decorative door panel 5B and the second sliding arm 4B by means of threaded fasteners can be implemented with reference to the method of connecting the first decorative door panel 5A and the first sliding arm 4A by means of threaded fasteners 6 mentioned above, which will not be repeated in this application.

[0122] It should be noted that during the rotation of the shaft mechanism 103, the first connecting member 3A and the second connecting member 3B may rotate synchronously relative to the shaft base 1, or they may rotate asynchronously relative to the shaft base 1. This application is described by way of example in which the first connecting member 3A and the second connecting member 3B rotate synchronously relative to the shaft base 1, and this is not to be considered a special limitation of this application.

[0123] In some embodiments, referring to Figures 5f and 5g, the shaft mechanism 103 may include at least one synchronization component 7. For example, there may be two synchronization components 7. The synchronization components 7 are used to drive the first connecting member 3A and the second connecting member 3B to rotate synchronously relative to the shaft base 1.

[0124] The specific structure of the synchronization component 7 is not limited. In some embodiments, please continue to refer to Figures 5f and 5g. The synchronization component 7 may include a first synchronization swing arm 7A and a second synchronization swing arm 7B. One end of the first synchronization swing arm 7A is rotatably connected to the shaft base 1, and the other end is slidably connected to the first connecting member 3A. One end of the second synchronization swing arm 7B is rotatably connected to the shaft base 1, and the other end is slidably connected to the second connecting member 3B. The above-mentioned one end of the first synchronization swing arm 7A and the above-mentioned one end of the second synchronization swing arm 7B can rotate synchronously and in opposite directions. Each synchronization swing arm can rotate synchronously in opposite directions, so that the various connecting parts of the shaft mechanism 103 can rotate synchronously, thereby improving the user experience.

[0125] In some embodiments, referring to Figures 5f and 5g, the aforementioned end of the first synchronous swing arm 7A is provided with a first gear tooth 71A, and the aforementioned end of the second synchronous swing arm 7B is provided with a second gear tooth 71B. The first gear tooth 71A and the second gear tooth 71B are directly meshed, or an even number of intermediate gears are provided between the first gear tooth 71A and the second gear tooth 71B, and the first gear tooth 71A, the even number of intermediate gears, and the second gear tooth 71B are sequentially meshed. Thus, the various connecting members are synchronized in rotation by means of gear transmission, and this structure is simple and easy to implement. In other embodiments, the aforementioned end of the first synchronous swing arm 7A and the aforementioned end of the second synchronous swing arm 7B can also be connected by means of a spiral transmission assembly and a slider to achieve synchronized rotation between the various connecting members, and this application does not specifically limit this.

[0126] In some embodiments, please continue to refer to Figures 5f and 5g. The other end of the first synchronous swing arm 7A is provided with a third sliding portion 72A. Optionally, the number of the third sliding portions 72A can be two, and the two third sliding portions 72A are respectively provided at the two ends of the other end of the first synchronous swing arm 7A arranged along the Y-axis direction. The first connecting member 3A is provided with a first accommodating groove 33A, and the two inner wall surfaces of the first accommodating groove 33A arranged along the Y-axis direction are respectively provided with a first slide groove 34A, and the first slide groove 34A can be a circular arc slide groove or a linear slide groove. The other end of the first synchronous swing arm 7A can be slidably accommodated in the first accommodating groove 33A, and the two third sliding portions 72A can be slidably accommodated in the two first slide grooves 34A, thereby achieving a slidable connection between the other end of the first synchronous swing arm 7A and the first connecting member 3A. This structure is simple and easy to implement.

[0127] The slidable connection method between the other end of the second synchronous swing arm 7B and the second connecting member 3B can be implemented with reference to the slidable connection method between the other end of the first synchronous swing arm 7A and the first connecting member 3A, and will not be repeated here.

[0128] With the development of technology, when users operate the foldable screen device 100 to rotate the hinge mechanism 103, they need to obtain force feedback to generate a damping feeling and enhance the user experience. At the same time, the foldable screen device 100 needs to be able to maintain one or more stable states to enhance the stability and reliability of the foldable screen device 100 during use. The stable state can be the unfolded state, the folded state, or at least one semi-folded state.

[0129] In order to achieve the above purpose, referring to Figure 5f and Figure 5g, the rotating shaft mechanism 103 further includes a damping assembly 8. Optionally, the damping assembly 8 may include an off-axis damping structure 81 and an on-axis damping structure 82.

[0130] The off-axis damping structure 81 may include at least one first off-axis damping structure 81A and at least one second off-axis damping structure 81B. The first off-axis damping structure 81A is provided on the first connecting member 3A, and the second off-axis damping structure 81B is provided on the second connecting member 3B. The in-axis damping structure 82 may include at least one first in-axis damping structure 82A and at least one second in-axis damping structure 82B.

[0131] Referring to FIG. 15 , and in conjunction with FIG. 5 f , FIG. 15 is an exploded view of a portion of the rotating shaft mechanism 103 shown in FIG. A cam portion is formed on at least one end of the first sliding portion 42A along the Y-axis. Optionally, cam portions are formed on both ends of the first sliding portion 42A along the Y-axis.

[0132] The number of first off-axis damping structures 81A corresponding to the first sliding portion 42A can be one or two. This embodiment and the following embodiments are described by exemplifying the number of first off-axis damping structures 81A corresponding to the first sliding portion 42A as two, which is not to be considered as a special limitation of the present application.

[0133] The two first off-axis damping structures 81A respectively cooperate with the two cam portions of the first sliding portion 42A to generate a damping force.

[0134] Please refer to FIG. 15 , the first off-axis damping structure 81A may include a first sliding member 811A, a first contact member 812A, and at least one first elastic member 813A.

[0135] The first sliding member 811A is slidably connected to the first connecting member 3A along the Y-axis. In some embodiments, as shown in Figure 15 , the first connecting member 3A is provided with a first guide groove 35A extending along the Y-axis, within which the first sliding member 811A is slidably received. The first guide groove 35A is provided with a cover 36A, which covers the opening of the first guide groove 35A and is secured to the first connecting member 3A. The cover 36A serves to stop the first sliding member 811A from falling out.

[0136] The first contact member 812A is used to contact the cam portion. The first contact member 812A is connected to the first sliding member 811A. Optionally, the first contact member 812A is rotatably connected to the first sliding member 811A. In this way, the first contact member 812A is a rolling member. The shape of the first contact member 812A includes but is not limited to a roller shape, a roller shape, a needle shape, a drum shape, etc. This application uses the shape of the first contact member 812A as an example of a roller shape. Rolling contact can reduce the friction loss between the first contact member 812A and the cam portion. In some other embodiments, the first contact member 812A can also be fixedly connected, slidably connected, or rotatably and slidably connected to the first sliding member 811A. This application does not specifically limit this.

[0137] The first elastic member 813A is provided on the side of the first sliding member 811A facing away from the cam portion, and the first elastic member 813A is used to apply an elastic force directed toward the cam portion to the first sliding member 811A so as to bring the first contact member 812A into contact with the cam portion. The number of first elastic members 813A can be one or more. For example, the number of first elastic members 813A is three. The first elastic member 813A can be a cylindrical coil spring, a disc spring, a tower spring, rubber, silicone, etc. This application is illustratively described using the first elastic member 813A as a cylindrical coil spring, which cannot be considered as a special limitation on the present application.

[0138] When the hinge mechanism 103 switches between the unfolded and folded states, the first contact member 812A rolls along the cam portion. The cam portion includes at least one convex portion and at least one concave portion. For example, the cam portion includes a convex portion and two concave portions located on opposite sides of the convex portion. Under the action of the first elastic member 813A, the first contact member 812A easily moves from the convex portion to the concave portion and less easily moves from the concave portion to the convex portion. This allows the first contact member 812A to be stably maintained in the at least one concave portion, thereby maintaining the hinge mechanism 103 in one or more stable states.

[0139] In some embodiments, the first off-axis damping structure 81A may further include at least one first guide rod 814A and a first avoidance member 815A. The number of first guide rods 814A may be the same as the number of first elastic members 813A, with a one-to-one correspondence. Of course, in other embodiments, the number of first guide rods 814A may differ from the number of first elastic members 813A, with multiple first guide rods 814A corresponding to one first elastic member 813A. Each first guide rod 814A is disposed within the corresponding first elastic member 813A, with one end of the first guide rod 814A being fixed to the first sliding member 811A and the other end being slidably disposed within the first avoidance member 815A. The first avoidance member 815A is located on the side of at least one first elastic member 813A facing away from the first sliding member 811A and may be received and fixed within the first guide groove 35A. The first avoidance member 815A has a sliding hole defined within it. The axis of the sliding hole is parallel to the sliding direction of the first sliding member 811A relative to the first connecting member 3A. The other end of the first guide rod 814A is received within the sliding hole. When the first contact member 812A rolls along the cam portion, the other end of the first guide rod 814A is able to slide within the sliding hole. This simple structure prevents misalignment of the first elastic member 813A during compression, thereby enhancing stability and reliability.

[0140] In some other embodiments, the first off-axis damping structure 81A may not be provided with the at least one first guide rod 814A and the first avoidance member 815A.

[0141] It should be noted that the second off-axis damping structure 81B may have the same structural form as the first off-axis damping structure 81A, and the present application does not elaborate on the specific structure of the second off-axis damping structure 81B.

[0142] 15 and in combination with FIG5f, the number of the first shaft inner damping structure 82A and the second shaft inner damping structure 82B can be one or more. In this embodiment, the number of the first shaft inner damping structure 82A and the second shaft inner damping structure 82B is one.

[0143] Please refer to Figures 15 and 16 . Figure 16 is an exploded view of the first and second shaft damping structures 82A and 82B within the rotating shaft mechanism 103 shown in Figure 15 . The first shaft damping structure 82A may include a first damping swing arm 821A, at least one first cam 822A, at least one second cam 823A, and at least one second elastic member 824A.

[0144] One end of the first damping swing arm 821A is rotatably connected to the rotating shaft base 1, and the other end is slidably connected to the first connecting member 3A. In some embodiments, the first internal damping structure 82A may further include a rotating shaft 826A and a sleeve 827A. The rotating shaft 826A may be rotatably connected to the rotating shaft base 1 about the central axis of the rotating shaft 826A. The sleeve 827A is disposed at the aforementioned end of the first damping swing arm 821A, and the sleeve 827A is sleeved on the rotating shaft 826A and cannot rotate relative to the rotating shaft 826A. For example, the rotating shaft 826A may be a flat shaft, and the sleeve 827A is provided with a flat hole. The sleeve 827A is sleeved on the rotating shaft 826A via the flat hole to prevent the sleeve 827A from rotating relative to the rotating shaft 826A. This achieves a rotatable connection between the aforementioned end of the first damping swing arm 821A and the rotating shaft base 1. This structure is simple and the connection is relatively stable.

[0145] In some embodiments, the other end of the first damping swing arm 821A may be provided with a fourth sliding portion 828A. Optionally, referring specifically to FIG. 16 , the first damping swing arm 821A may include a first extension portion 8211A, a second extension portion 8212A, and a third extension portion 8213A. The first extension portion 8211A extends along the Y-axis, while the second extension portion 8212A and the third extension portion 8213A extend from opposite ends of the first extension portion 8211A toward the first connecting portion 3A. Accordingly, the fourth sliding portion 828A may include two first sliding units 8281A and two second sliding units 8282A. The two first sliding units 8281A are respectively provided at the end of the second extension portion 8212A facing away from the third extension portion 8213A and the end of the third extension portion 8213A facing away from the second extension portion 8212A. The two second sliding units 8282A are respectively disposed at an end portion of the second extending portion 8212A facing the third extending portion 8213A and an end portion of the third extending portion 8213A facing the second extending portion 8212A.

[0146] Referring to Figure 15 , the first connecting member 3A is provided with a second accommodating groove 37A. At least one inner wall surface of the second accommodating groove 37A is provided with a second chute 38A. This second chute 38A can be arcuate or linear. The other end of the first damping swing arm 821A is slidably received within the second chute 38A, and the fourth sliding portion 828A is also slidably received within the second chute 38A. This achieves a slidable connection between the other end of the first damping swing arm 821A and the first connecting member 3A. This structure is simple and easy to implement.

[0147] Optionally, please continue to refer to Figure 15. The second accommodating groove 37A may include a first accommodating groove unit 371A and a second accommodating groove unit 372A. The second chute 38A includes two first chute units 381A and two second chute units 382A. The first chute unit 381A and the second chute unit 382A can be arc-shaped chute or linear chute. The two first chute units 381A are respectively arranged on the inner wall surface of the first accommodating groove unit 371A facing the second accommodating groove unit 372A and the inner wall surface of the second accommodating groove unit 372A facing the first accommodating groove unit 371A. The two second chute units 382A are respectively arranged on the inner wall surface of the first accommodating groove unit 371A facing away from the second accommodating groove unit 372A and the inner wall surface of the second accommodating groove unit 372A facing away from the first accommodating groove unit 371A. The end of the second extension 8212A facing away from the first extension 8211A and the end of the third extension 8213A facing away from the first extension 8211A form the other end of the first damping swing arm 821A. The end of the second extension 8212A facing away from the first extension 8211A can be slidably accommodated in the first accommodating groove unit 371A, and the end of the third extension 8213A facing away from the first extension 8211A can be slidably accommodated in the second accommodating groove unit 372A. The two first sliding units 8281A can be slidably accommodated in the two first slide groove units 381A, respectively, and the two second sliding units 8282A can be slidably accommodated in the two second slide groove units 382A, respectively. This improves the force stability of the first damping swing arm 821A along the Y-axis.

[0148] The first sliding unit 8281A and the first chute unit 381A can employ a low-pair fit, with surface-to-surface contact, to achieve smooth sliding. The second sliding unit 8282A and the second chute unit 382A can employ a high-pair fit, with line-to-surface contact, to prevent jamming. Conversely, the first sliding unit 8281A and the first chute unit 381A can also employ a high-pair fit, while the second sliding unit 8282A and the second chute unit 382A can also employ a low-pair fit. This application does not impose specific limitations on this.

[0149] Please refer to Figure 16. The first cam 822A can be arranged at the above-mentioned end of the first damping swing arm 821A. The number of the first cam 822A can be one or more. In some embodiments, the number of the first cam 822A is two, and the two first cams 822A are respectively arranged on opposite sides of the sleeve 827A arranged along the Y-axis direction. Optionally, the first cam 822A can be fixedly connected to the sleeve 827A. For example, the first cam 822A can be integrally formed with the sleeve 827A. In other examples, the first cam 822A and the sleeve 827A can also be independently formed and fixedly connected by welding, bonding, threaded connection or clamping, etc., which are not specifically limited here. The first cam 822A has a first cam surface, and the first cam surface 8221A extends around the rotation axis of the first damping swing arm 821A relative to the rotating shaft base 1.

[0150] The second cam 823A is disposed on the side facing the first cam surface. The second cam 823A has a second cam surface facing the first cam surface.

[0151] Optionally, there are two second cams 823A, and the two second cams 823A are respectively arranged on the side facing the first cam surfaces of the two first cams 822A, and the second cam surfaces of the two second cams 823A respectively face the first cam surfaces of the two first cams 822A.

[0152] In some embodiments, referring again to FIG. 16 , the second cam 823A can be slidably mounted on the rotating shaft 826A to provide a position limiting guide for the second cam 823A and prevent misalignment. In some embodiments, the second cam 823A can rotate relative to the rotating shaft 826A but cannot rotate relative to the rotating shaft base 1. This allows the first cam 822A to rotate relative to the second cam 823A as the first cam 822A rotates with the rotating shaft 826A.

[0153] The second elastic member 824A is disposed on a side of the second cam 823A facing away from the first cam 822A. The second elastic member 824A is used to apply an elastic force directed toward the first cam 822A to the second cam 823A, so that the second cam surface 8231A contacts the first cam surface 8221A.

[0154] Optionally, there are two second elastic members 824A, and the two second elastic members 824A are respectively located on the side of the two second cams 823A facing away from the corresponding first cam 822A, so as to apply elastic force pointing to the corresponding first cam 822A to the two second cams 823A respectively.

[0155] The second elastic member 824A can be a cylindrical coil spring, a disc spring, a tower spring, rubber, silicone, etc. This application uses the second elastic member 824A as a cylindrical coil spring for illustrative purposes, which cannot be regarded as a special limitation on the composition of this application.

[0156] The second elastic member 824A is sleeved outside the rotating shaft 826A, so as to guide the second elastic member 824A with the help of the rotating shaft 826A, thereby preventing the second elastic member 824A from being dislocated during the compression process.

[0157] When the rotating shaft mechanism 103 switches between the unfolded state and the folded state, the second cam surface rotates relative to the first cam surface. The first cam surface includes at least one convex portion and at least one concave portion, and the second cam surface includes at least one convex portion and at least one concave portion. When the convex portion of the first cam surface engages with the concave portion of the second cam surface, and the concave portion of the first cam surface engages with the convex portion of the second cam surface, the first damping swing arm 821A can remain stable, so that the rotating shaft mechanism 103 can remain in one or more stable states.

[0158] In some embodiments, referring to FIG. 16 , the first shaft internal damping structure 82A further includes at least one friction assembly 825A. The friction assembly 825A is disposed on a side of the second elastic member 824A that faces away from the corresponding second cam 823A. In some embodiments, there are multiple friction assemblies 825A. For example, there are two friction assemblies 825A, each disposed on a side of the two second elastic members 824A that faces away from the corresponding second cam 823A.

[0159] Referring to Figure 16, each friction assembly 825A includes at least one rotating friction member 8251A and at least one fixed friction member 8252A. The at least one rotating friction member 8251A and the at least one fixed friction member 8252A can both be slidably mounted on the outside of the rotating shaft 826A and alternately arranged along the length of the rotating shaft 826A. The rotating friction member 8251A cannot rotate relative to the rotating shaft 826A, but can rotate relative to the rotating shaft base 1 along with the rotating shaft 826A. Optionally, the rotating friction member 8251A is provided with a flat hole, and the rotating friction member 8251A is mounted on the rotating shaft 826A via the flat hole, thereby preventing the rotating friction member 8251A from rotating relative to the rotating shaft 826A. The fixed friction member 8252A can rotate relative to the rotating shaft 826A, but cannot rotate relative to the rotating shaft base 1. Optionally, the fixed friction member 8252A is provided with a circular hole, which is used to fit over the rotating shaft 826A, thereby allowing the fixed friction member 8252A to rotate relative to the rotating shaft 826A. In this way, when the first damping swing arm 821A rotates between the unfolded and folded states, the rotating friction member 8251A and the fixed friction member 8252A rotate relative to each other to generate frictional damping force, allowing the entire device to remain in any opening angle.

[0160] In some embodiments, referring to FIG. 16 , the first internal damping structure 82A further includes at least one stopper 829A. For example, the stopper 829A may be a retaining spring. In other examples, the stopper 829A may also be a shaft shoulder, a positioning pin, or the like. For example, there are two stoppers 829A, each disposed on a side of the two friction assemblies opposite the corresponding second elastic member 824A. The stoppers 829A are disposed on the rotating shaft 826A and cannot slide along the rotating shaft 826A. In this manner, the stoppers 829A prevent the friction assembly 825A, the second elastic member 824A, and the sleeve 827A from dislodging from one end of the rotating shaft 826A.

[0161] The structure of the second internal damping structure 82B can be the same as that of the first internal damping structure 82A, and will not be further described in this embodiment. Furthermore, the fixed friction member within the second internal damping structure 82B can be integrally connected to the fixed friction member 8252A within the first internal damping structure 82A to prevent the fixed friction member 8252A from rotating relative to the shaft base 1. This structure is simple and easy to implement.

[0162] The first in-shaft damping structure 82A and the second in-shaft damping structure 82B may not be limited to the structure shown in FIG16 . In other embodiments, please refer to FIG17a and FIG17b . FIG17a is a top view of the rotating shaft mechanism 103 provided in some other embodiments of the present application, and FIG17b is a schematic diagram of the exploded structure of the first in-shaft damping structure 82A and the second in-shaft damping structure 82B in the rotating shaft mechanism 103 shown in FIG17a . In the rotating shaft mechanism 103 described in this embodiment, the first in-shaft damping structure 82A differs from the first in-shaft damping structure 82A in the rotating shaft mechanism 103 shown in FIG16 in that: in this embodiment, there are two shaft sleeves 827A, namely a first shaft sleeve 8271A and a second shaft sleeve 8272A, and the first shaft sleeve 8271A and the second shaft sleeve 8272A are spaced apart along the Y-axis direction. There is one first cam 822A, positioned on the side of the first sleeve 8271A facing the second sleeve 8272A. The first cam 822A can be integrally formed with the first sleeve 8271A. The second cam 823A, the second elastic member 824A, and the friction assembly 825A are positioned between the first sleeve 8271A and the second sleeve 8272A. The first in-shaft damping structure 82A also includes a spacer 830A positioned between the friction assembly 825A and the second sleeve 8272A to prevent relative rotation between the friction assembly 825A and the second sleeve 8272A, which could cause wear on the second sleeve 8272A. This simple structure facilitates assembly.

[0163] The off-axis damping structure occupies space on the connector, while the on-axis damping structure occupies space on the shaft base. The shaft mechanism 103 provided in this application is equipped with both an off-axis damping structure and an on-axis damping structure, which can ensure damping force while also ensuring the structural strength of the shaft base and connector, preventing the shaft base or connector from having too much damping structure, resulting in a weakened structure.

[0164] In some other embodiments, the pivot mechanism 103 may also not be provided with the above-mentioned second support member 2B, second connecting member 3B, second sliding swing arm 4B, second decorative door panel 5B, synchronization assembly 7, second shaft external damping structure 81B and second shaft internal damping structure 82B, but directly connect the second shell 102 to the pivot base 1. This application does not make specific restrictions on this.

[0165] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0166] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hinge mechanism for a folding screen device, characterized in that: include: Rotating shaft base; a first support member, the first support member being rotatably connected to the rotating shaft base; a first connecting member, the first connecting member being rotatably connected to the first supporting member, the first connecting member being provided with one of a first arc-shaped sliding rail and a first sliding portion; A first sliding swing arm is rotatably connected to the rotating shaft base, and the first sliding swing arm is provided with the other of the first arc-shaped slide rail and the first sliding part, and the first sliding part is slidably connected to the first arc-shaped slide rail.

2. The rotating shaft mechanism according to claim 1, characterized in that: The first arc-shaped slide rail is a slide groove type slide rail, and the first sliding portion can be slidably accommodated in the first arc-shaped slide rail.

3. The rotating shaft mechanism according to claim 2, characterized in that: The surface of the first connecting member facing the folding screen in the folding screen device is the first surface; the first arc-shaped slide rail is provided on the first connecting member; the first arc-shaped slide rail includes a first arc-shaped slide rail segment and a second arc-shaped slide rail segment; The first arc-shaped slide rail section has a first end and a second end in its length direction, the second end being located on a side of the first end away from the shaft base; the second arc-shaped slide rail section has a third end and a fourth end in its length direction, the third end being connected to the second end, and the fourth end being located on a side of the third end away from the first end; From the first end to the second end, the distance from the first circular arc slide rail section to the first surface gradually decreases, and from the third end to the fourth end, the distance from the second circular arc slide rail section to the first surface gradually increases; or, from the first end to the second end, the distance from the first circular arc slide rail section to the first surface gradually increases, and from the third end to the fourth end, the distance from the second circular arc slide rail section to the first surface gradually decreases.

4. The rotating shaft mechanism according to claim 3, characterized in that: When the rotating shaft mechanism rotates from the unfolded state to the folded state, the first sliding portion slides from the first circular arc-shaped slide rail section to the second circular arc-shaped slide rail section.

5. The rotating shaft mechanism according to any one of claims 1 to 4, characterized in that: The hinge mechanism also includes a first decorative door panel, which is arranged on the side of the first connecting member facing away from the folding screen in the folding screen device, and the first decorative door panel is fixedly connected to the first sliding swing arm.

6. The rotating shaft mechanism according to claim 5, characterized in that: The first connecting member is provided with a through hole, and the first decorative door panel is provided with a threaded hole; The rotating shaft mechanism further includes: A threaded fastener, wherein the head of the threaded fastener is arranged on the side of the first connecting member facing away from the first decorative door panel, a portion of the rod of the threaded fastener is accommodated in the through hole, and the other portion of the rod of the threaded fastener is threadedly connected to the threaded hole.

7. The rotating shaft mechanism according to any one of claims 1 to 6, characterized in that: The first sliding portion is provided on the first sliding swing arm, and the first sliding portion forms a cam portion along at least one end of the length direction of the rotating shaft base; The rotating shaft mechanism also includes: A first off-axis damping structure, the first off-axis damping structure includes a first sliding member, a first contact member and at least one first elastic member, the first sliding member is slidably connected to the first connecting member along the length direction of the rotating shaft base, the first contact member is connected to the first sliding member, the first elastic member is arranged on the side of the first sliding member facing away from the cam portion, and the first elastic member is used to apply an elastic force directed to the cam portion to the first sliding member so that the first contact member contacts the cam portion.

8. The rotating shaft mechanism according to claim 7, characterized in that: The first off-axis damping structure further includes a first guide rod and a first avoidance member; The first guide rod is passed through the first elastic member, and one end of the first guide rod is fixed to the first sliding member. The first avoidance member is located on the side of the first elastic member facing away from the first sliding member, and a sliding hole is provided in the first avoidance member. The axial direction of the sliding hole is parallel to the sliding direction of the first sliding member relative to the first connecting member, and the other end of the first guide rod can be slidably accommodated in the sliding hole.

9. The rotating shaft mechanism according to any one of claims 1 to 8, characterized in that: The rotating shaft mechanism also includes: a first in-shaft damping structure, comprising a first damping swing arm, a first cam, a second cam, and a second elastic member; one end of the first damping swing arm is rotatably connected to the rotating shaft base, and the other end is slidably connected to the first connecting member; the first cam is disposed at the one end of the first damping swing arm, and the first cam has a first cam surface, which extends around the rotation axis of the first damping swing arm relative to the rotating shaft base; The second cam is arranged on the side facing the first cam surface, and the second cam has a second cam surface, and the second cam surface faces the first cam surface; The second elastic member is provided on a side of the second cam facing away from the first cam, and the second elastic member is used to apply an elastic force directed toward the first cam to the second cam, so that the second cam surface contacts the first cam surface; When the first damping swing arm rotates relative to the rotating shaft base, the first cam surface and the second cam surface rotate relative to each other.

10. The rotating shaft mechanism according to any one of claims 1 to 9, characterized in that: Also includes: A synchronization component, the synchronization component includes a first synchronization swing arm and a second synchronization swing arm, one end of the first synchronization swing arm can be rotatably connected to the rotating shaft base, and the other end can be slidably connected to the first connecting member; one end of the second synchronization swing arm can be rotatably connected to the rotating shaft base, and the other end can be slidably connected to the second connecting member, the one end of the first synchronization swing arm and the one end of the second synchronization swing arm can rotate synchronously and in opposite directions.

11. The rotating shaft mechanism according to any one of claims 1 to 10, characterized in that: The first support member is an integrally formed structure.

12. The rotating shaft mechanism according to claim 11, characterized in that: The material of the first support member is amorphous.

13. The rotating shaft mechanism according to claim 12, characterized in that: The material of the first support member is zirconium-based liquid metal.

14. The rotating shaft mechanism according to any one of claims 1 to 13, characterized in that: Also includes: A shielding member covers and is fixed to the surface of the hinge base facing the folding screen in the folding screen device.

15. The rotating shaft mechanism according to claim 14, characterized in that: The shielding member is in a sheet shape, and the thickness of the shielding member is greater than or equal to 0.03 mm and less than or equal to 0.05 mm.

16. A folding screen device, characterized in that: include: Folding screen; a first shell; The hinge mechanism according to any one of claims 1 to 15, wherein the first connecting member of the hinge mechanism is connected to the first shell, a portion of the folding screen is arranged on the first shell, and another portion is arranged on the hinge base, the first support member and the first connecting member of the hinge mechanism.

17. The folding screen device according to claim 16, characterized in that: The rotating shaft mechanism further includes a first decorative door panel, which is arranged on a side of the first connecting member facing away from the folding screen in the folding screen device, and the first decorative door panel is fixedly connected to the first sliding swing arm; The first shell includes a first back cover, the first back cover includes a first back cover part, the first back cover part is located on the side of the first connecting member facing away from the folding screen, and there is a first gap between the first back cover part and the first connecting member, and the end of the first decorative door panel away from the rotating shaft base is accommodated in the first gap.

18. The folding screen device according to claim 17, characterized in that: When the rotating shaft mechanism is in the expanded state, the first decorative door panel is inclined toward the first connecting member from an end facing the rotating shaft base to an end away from the rotating shaft base.

Images