Rotating shaft mechanism and electronic equipment

Abstract

The invention discloses a rotating shaft mechanism and electronic equipment. The rotating shaft mechanism comprises a base (10); the at least two connecting blocks (20) are located on the two sides of the base (10), and damping assemblies (30) are arranged on the connecting blocks (20); the swing arms (40) are arranged on the two sides of the base (10) respectively, the first ends of the swing arms are rotationally connected with the base (10), and the second ends of the swing arms are slidably connected with the connecting blocks (20); the two ends of the first connecting rod (50) are rotationally connected with the swing arm (40) and the damping assembly (30) on the same side of the base (10) respectively; in the opening and closing process of the rotating shaft mechanism, the damping assembly (30) provides damping force for relative sliding of the swing arm (40) relative to the connecting block (20) through the first connecting rod (50). The damping assembly provides damping force for the rotating shaft mechanism through the first connecting rod, sound can be reduced, durability can be improved, then the damping performance of the rotating shaft mechanism is improved, and damping attenuation is reduced.

Description

Rotating shaft mechanism and electronic device

[0001] The present application claims priority to the Chinese patent application No. 202410407866.8, filed on April 7, 2024, and entitled "Rotating shaft mechanism and electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of electronic devices, and in particular to a rotating shaft mechanism and an electronic device. BACKGROUND

[0003] The synchronous rotating shaft is an important component of the foldable electronic device, to realize the conversion between the folded state and the flat state of the electronic device, and to ensure that the electronic device has appropriate rotating resistance during the state conversion process.

[0004] Generally, the rotating resistance is realized by the friction between the concave edge of the flat swing arm and the cam top rod of the synchronous rotating shaft. This design has some problems, because the size of the damping force is affected by the concave and cam profile, and as the number of folding and unfolding of the synchronous rotating shaft increases, the wear of the concave and cam will cause the damping force to weaken, eventually affecting the opening and closing feel of the device. SUMMARY

[0005] The purpose of the embodiments of the present application is to provide a rotating shaft mechanism and an electronic device, to reduce the wear and tear of the rotating shaft mechanism during the opening and closing process, and to improve the damping durability of the rotating shaft mechanism and the electronic device during use.

[0006] To achieve the above-mentioned purpose, the first aspect of the present application provides a rotating shaft mechanism, comprising: a base; at least two connecting blocks located on both sides of the base, the connecting blocks being provided with a damping assembly; at least two swing arms arranged on both sides of the base, and the first end of the swing arm being rotatably connected to the base, and the second end of the swing arm being slidably connected to the connecting block; a first connecting rod, both ends of the first connecting rod being rotatably connected to the swing arm and the damping assembly on the same side of the base; during the opening and closing process of the rotating shaft mechanism, the damping assembly provides a damping force for the relative sliding of the swing arm relative to the connecting block through the first connecting rod. The first connecting rod provides a damping force for the rotating shaft mechanism through the damping assembly, which can reduce the sound and improve the durability compared to the damping mode relying on the friction between the concave and cam top rod, thereby improving the damping performance of the rotating shaft mechanism and reducing the damping decay.

[0007] According to one embodiment of the present application, the first end of the first connecting rod is rotatably connected to the swing arm, and the second end of the first connecting rod is rotatably connected to the damping assembly; in the unfolded state of the hinge mechanism, the first end of the first connecting rod is closer to the base relative to the second end of the first connecting rod, and the damping assembly applies a force away from the base to the connecting block through the first connecting rod, so as to realize the damping force during the conversion of the hinge mechanism from the unfolded state to the folded state and improve the screen crease of the electronic device.

[0008] According to one embodiment of the present application, the first end of the first connecting rod is rotatably connected to the swing arm, and the second end of the first connecting rod is rotatably connected to the damping assembly; in the unfolded state of the hinge mechanism, the first end of the first connecting rod is closer to the base relative to the second end of the first connecting rod, and the damping assembly applies a force away from the base to the connecting block through the first connecting rod, so as to realize the damping force during the conversion of the hinge mechanism from the unfolded state to the folded state and improve the screen crease of the electronic device.

[0009] According to one embodiment of the present application, the damping assembly comprises an elastic member and a sliding block; the first end of the elastic member is abutted to the sliding block, and the second end of the elastic member is abutted to the connecting block; the first end of the first connecting rod is rotatably connected to the swing arm, and the second end of the first connecting rod is rotatably connected to the sliding block. During the opening and closing of the hinge mechanism, the elastic force of the elastic member provides a damping force for the relative sliding of the swing arm relative to the connecting block through the first connecting rod.

[0010] According to one embodiment of the present application, the connecting block comprises a receiving groove and a first protruding portion, the first protruding portion is arranged on the side wall of the receiving groove, and a first sliding groove is formed between the first protruding portion and the bottom wall of the receiving groove; the sliding block comprises a body and a second protruding portion, the second protruding portion is arranged on the side wall of the body, and the second protruding portion is slidably connected to the first sliding groove, so as to realize the sliding of the sliding block on the connecting block.

[0011] According to one embodiment of the present application, the extension direction of the first sliding groove is parallel to the axial direction of the hinge mechanism.

[0012] According to one embodiment of the present application, the first end of the first connecting rod is provided with a first pin hole, the second end of the first connecting rod is provided with a second pin hole, the swing arm is provided with a first pin shaft, and the first pin shaft is rotatably connected to the first pin hole along the axis of the first pin shaft, so as to conveniently realize the rotatable connection between the first end of the first connecting rod and the swing arm.

[0013] According to one embodiment of the present application, the body of the sliding block is provided with a second pin shaft, and the second pin shaft is rotatably connected to the second pin hole along the axis of the second pin shaft, so as to conveniently realize the rotatable connection between the second end of the first connecting rod and the sliding block.

[0014] According to one embodiment of the present application, at least one damping assembly and at least one first connecting rod are arranged on each side of the base, and the use of a small number of damping assemblies and first connecting rods can reduce production costs.

[0015] According to one embodiment of the present application, two first pin shafts are arranged on the two sides of the swing arm, and at least two damping assemblies and at least two first connecting rods are arranged on each side of the base, and the at least two damping assemblies are arranged on the two sides of each swing arm. The two ends of each first connecting rod are rotatably connected with the slider of the damping assembly on the same side of the swing arm and the first pin shaft, thereby achieving a more stable elastic damping effect.

[0016] According to one embodiment of the present application, the first end of the first connecting rod is provided with a first ball pin seat, the swing arm is provided with a first ball pin, and the first ball pin seat and the first ball pin form a ball pin pair to be rotatably connected with the ball center of the first ball pin. Alternatively, the first end of the first connecting rod is provided with a second ball pin, the swing arm is provided with a second ball pin seat, and the second ball pin seat and the second ball pin form a ball pin pair to be rotatably connected with the ball center of the second ball pin. The ball pin pair can move in multiple axial directions, thereby providing greater flexibility and freedom between the first connecting rod and the swing arm.

[0017] According to one embodiment of the present application, the elastic member includes at least one elastic line, which spirally extends or extends in a plane from the first end of the elastic member to the second end of the elastic member. The at least one elastic line spirally extends, which can enable the elastic member to have a greater elastic force. The at least one elastic line extends in a plane, which can reduce the thickness of the elastic member and facilitate reducing the overall thickness of the rotating shaft mechanism.

[0018] According to one embodiment of the present application, the side wall of the second end of the swing arm includes a third protruding part, the connecting block includes a first groove, the side wall of the first groove includes a straight sliding groove, and the third protruding part and the straight sliding groove are slidably connected, thereby achieving stable sliding connection between the second end of the swing arm and the connecting block.

[0019] According to one embodiment of the present application, the extension direction of the straight sliding groove is parallel to the radial direction of the rotating shaft mechanism.

[0020] According to one embodiment of the present application, the side wall of the second end of the swing arm includes a fourth protruding part, the connecting block includes a second groove, the side wall of the second groove includes an arc sliding groove, and the fourth protruding part and the arc sliding groove are slidably connected. During the opening and closing process of the rotating shaft mechanism, relative “rotation” exists between the swing arm and the connecting block, thereby reducing the rotation angle of the swing arm relative to the base.

[0021] To achieve the above object, the electronic device provided by the second aspect of the present application comprises the rotating shaft mechanism, a first shell and a second shell, the first shell and the second shell are arranged on the connecting blocks on both sides of the base of the rotating shaft mechanism, and a flexible display screen is arranged on the first shell and the second shell. In the opening and closing process, the rotating shaft mechanism has small sound and high durability, and has little damping attenuation.

[0022] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0024] FIG. 1 is a structural schematic diagram of a damping scheme in the related art;

[0025] FIG. 2 is a structural schematic diagram of an electronic device in a folded state according to an embodiment of the present application;

[0026] FIG. 3 is a structural schematic diagram of an electronic device in an unfolded state according to an embodiment of the present application;

[0027] FIG. 4 is an exploded structural schematic diagram of an electronic device according to an embodiment of the present application;

[0028] FIG. 5 is a sectional structural schematic diagram of an electronic device according to an embodiment of the present application;

[0029] FIG. 6 is a structural schematic diagram of a rotating shaft mechanism in an unfolded state according to an embodiment of the present application;

[0030] FIG. 7 is a partial structural schematic diagram of a rotating shaft mechanism according to an embodiment of the present application;

[0031] FIG. 8 is a partial structural schematic diagram of the rotating shaft mechanism of FIG. 7 after the swing arm is rotated;

[0032] FIG. 9 is an exploded structural schematic diagram of the rotating shaft mechanism of FIG. 8;

[0033] FIG. 10 is a structural schematic diagram of a first connecting rod of a rotating shaft mechanism according to an embodiment of the present application;

[0034] FIG. 11a is a structural schematic diagram of a first special-shaped elastic member of a rotating shaft mechanism according to an embodiment of the present application;

[0035] FIG. 11b is a structural schematic diagram of a second special-shaped elastic member of a rotating shaft mechanism according to an embodiment of the present application;

[0036] Fig. 11c is a structural schematic diagram of a third special-shaped elastic piece of a hinge mechanism according to an embodiment of the present application;

[0037] Fig. 11d is a structural schematic diagram of a fourth special-shaped elastic piece of a hinge mechanism according to an embodiment of the present application;

[0038] Fig. 11e is a structural schematic diagram of a fifth special-shaped elastic piece of a hinge mechanism according to an embodiment of the present application;

[0039] Fig. 12 is a force analysis schematic diagram of a hinge mechanism in a flat state according to an embodiment of the present application;

[0040] Fig. 13 is a force analysis schematic diagram of a hinge mechanism in a folded state according to an embodiment of the present application

[0041] Fig. 14 is an enlarged view of A in Fig. 6;

[0042] Fig. 15 is a first schematic diagram of a hinge mechanism according to an embodiment of the present application;

[0043] Fig. 16 is a second schematic diagram of a hinge mechanism according to an embodiment of the present application;

[0044] Fig. 17 is a third schematic diagram of a hinge mechanism according to an embodiment of the present application.

[0045] The reference signs are as follows: recess 1A, cam top rod 2A; base 10, connecting block 20, accommodating groove 21, first side 21a of the accommodating groove, second side 21b of the accommodating groove, first protruding part 22, first sliding groove 23, first groove 24, straight sliding groove 241, auxiliary sliding groove 242, mounting port 25, avoiding port 26, high pair sliding groove 27, damping assembly 30, elastic piece 31, first end 31a of the elastic piece, second end 31b of the elastic piece, recess 311, annular structure 312, sliding block 32, body 321, second protruding part 322, second pin shaft 323, swing arm 40, first end 40a of the swing arm, second end 40b of the swing arm, first pin shaft 41, third protruding part 42, sliding hinge 43, first connecting rod 50, first end 50a of the first connecting rod, second end 50b of the first connecting rod, edge 50c, first pin hole 51, second pin hole 52, second connecting rod 60, decorative door panel 71, middle decorative strip 72, hinge mechanism 100, first shell 201, second shell 202, flexible display screen 300, first display part 301, second display part 302, third display part 303, first adhesive layer 401, second adhesive layer 402, third adhesive layer 403; axial direction X, radial direction Y. DETAILED DESCRIPTION

[0046] Embodiments of the present application are described below in detail with reference to the accompanying drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0047] FIG. 1 is a structural schematic diagram of a damping solution in the related art. As shown in FIG. 1, in a related damping rotating shaft technology, the friction between the concave 1A of the flat swing arm edge and the cam top rod 2A is used to achieve the damping effect. Specifically, under the action of the spring force, the concave 1A of the flat swing arm edge and the cam top rod 2A are opposite to each other. When the swing arm rotates, the contact surfaces of the concave 1A of the flat swing arm edge and the cam top rod 2A move relative to each other and generate mutual friction, thereby forming a damping effect. However, this damping rotating shaft adopts a flat structure, although it is convenient to realize thinning, but in the process of use, the flat structure swing arm is easy to appear serious wear, which leads to the decline of the damping effect with the use times. In addition, in the rotation of the damping rotating shaft, serious abnormal noise problem is easy to appear.

[0048] Therefore, the present application provides a rotating shaft mechanism and an electronic device. Specifically, a rotating shaft mechanism and an electronic device of an embodiment of the present application are described below with reference to the accompanying drawings.

[0049] The rotating shaft mechanism of the embodiment of the present application can be applied to an electronic device. In order to facilitate understanding of how the rotating shaft mechanism is applied to the electronic device, first, the electronic device to which the rotating shaft mechanism is applied is introduced.

[0050] The electronic device can be a flexible display screen electronic device, which can be a flexible display screen digital camera, smart phone, tablet computer, video camera, television, notebook computer, car recorders, etc.

[0051] FIG. 2 is a structural schematic diagram of an electronic device in a folded state according to an embodiment of the present application. As shown in FIG. 2, the electronic device can include a rotating shaft mechanism 100, a first housing 201, a second housing 202, and a flexible display screen 300, and the flexible display screen 300 covers the first housing 201 and the second housing 202.

[0052] The flexible display screen 300 can include a flexible organic light-emitting diode (Organic Light-Emitting Diode, OLED) display screen, but is not limited thereto.

[0053] The flexible display screen 300 includes a first display part 301, a second display part 302, and a third display part 303, and the second display part 302 is located between the first display part 301 and the third display part 303.

[0054] As shown in FIG. 2, the first display part 301 and the third display part 303 are folded relative to each other, the second display part 302 of the flexible display screen 300 is in a curved form, the first display part 301 and the third display part 303 are exposed on two sides of the electronic device, and the electronic device is in a folded state.

[0055] At this time, since the first display part 301 and the third display part 303 are folded relative to each other, the electronic device occupies a smaller planar size, and is convenient to store.

[0056] In addition, since the first display part 301 and the third display part 303 of the electronic device are folded outward, the folding state of the electronic device can be exposed, and the user can view the content displayed by the flexible display screen 300 without opening the electronic device.

[0057] It can be understood that the electronic device in the folded state shown in FIG. 2 is only illustrative, and in some other embodiments, when the electronic device is in a folded state, the first display part 301 and the third display part 303 can also be folded inward, and are not exposed on two sides of the electronic device, thereby facilitating protection of the flexible display screen 300.

[0058] The second display part 302 of the flexible display screen 300 is a flexible display part, and the second display part 302 can be changed from a curved form to a planar state, so that the first display part 301 and the third display part 303 can be unfolded and folded relative to each other to realize the conversion between the unfolded state and the folded state of the electronic device.

[0059] FIG. 3 is a structural schematic diagram of an electronic device in an unfolded state according to an embodiment of the present application. As shown in FIG. 3, the first display part 301 and the third display part 303 are unfolded relative to each other, the second display part 302 is in a substantially planar state, the first display part 301, the second display part 302 and the third display part 303 are in a substantially same plane, and the electronic device is in an unfolded state. At this time, the display plane of the electronic device is large, and it is convenient to present a large-screen display effect to the user.

[0060] In order to realize the synchronous movement of the rotation shaft mechanism 100 with the first display part 301 and the third display part 303 unfolded and folded relative to each other, FIG. 4 is an exploded structural schematic diagram of an electronic device according to an embodiment of the present application. As shown in FIG. 4, the electronic device can further include a first adhesive layer 401, a second adhesive layer 402 and a third adhesive layer 403.

[0061] The first housing 201 and the second housing 202 are arranged on two sides of the rotation shaft mechanism 100. The first housing 201 and the second housing 202 can respectively include a receiving space for receiving electronic components (not shown), and the electronic components can include a processor, a speaker, a microphone, an antenna, a battery, etc.

[0062] The first adhesive layer 401 is arranged between the first housing 201 and the first display portion 301, the second adhesive layer 402 is arranged between the hinge mechanism 100 and the second display portion 302, and the third adhesive layer 403 is arranged between the second housing 202 and the third display portion 303. The first housing 201 and the second housing 202 can be rectangular frames, and the first adhesive layer 401 and the third adhesive layer 403 can be rectangular adhesive frames, and the second adhesive layer 402 can be a strip-shaped adhesive layer.

[0063] FIG. 5 is a schematic diagram of a cross-sectional structure of an electronic device according to an embodiment of the present application. As shown in FIG. 5, the first adhesive layer 401 is arranged between the first housing 201 and the first display portion 301, and the first adhesive layer 401 can be arranged around the first housing 201 (not shown), and the first display portion 301 and the first housing 201 can be fixed by the first adhesive layer 401. The second adhesive layer 402 is arranged between the second display portion 302 and the base 10, and the second display portion 302 and the base 10 can be fixed by the second adhesive layer 402. The third adhesive layer 403 is arranged between the third display portion 303 and the second housing 202, and the third adhesive layer 403 can be arranged around the second housing 202 (not shown), and the third display portion 303 and the second housing 202 can be fixed by the third adhesive layer 403, so that the flexible display screen 300 covers the first housing 201 and the second housing 202.

[0064] The hinge mechanism 100 includes a base 10 and two connecting blocks 20, and the two connecting blocks 20 are arranged on both sides of the base 10, and the two connecting blocks 20 can rotate relative to the base 10.

[0065] The first housing 201 and the second housing 202 are arranged one by one on the two connecting blocks 20 of the hinge mechanism 100, and the first housing 201 and the connecting block 20 on the first side of the hinge structure 100 can be connected by a bolt (not shown), and the second housing 202 and the connecting block 20 on the second side of the hinge structure 100 can be connected by a bolt (not shown). During the rotation of the first housing 201 and the second housing 202 relative to the base 10, the two connecting blocks 20 can rotate synchronously relative to the base 10.

[0066] The flexible display screen 300 covers the first housing 201 and the second housing 202, and during the switching of the electronic device between the folded state and the flat state, the two connecting blocks 20 of the hinge mechanism 100 rotate synchronously relative to the base 10 with the flattening and folding of the first display portion 301 and the third display portion 303.

[0067] During the opening and closing of the electronic device, the electronic device switches between the folded state and the flat state.

[0068] During the rotation of the two connecting blocks 20 around the base 10, the two connecting blocks 20 can apply damping force to the outside.

[0069] During the switching of the electronic device between the folded state and the unfolded state, the two connecting blocks 20 rotate with the first display part 301 and the third display part 303 around the base 10 to apply damping effect to the switching of the electronic device between the unfolded state and the folded state.

[0070] In the related art electronic device including a flexible display screen, after long-term, multiple, and repeated folding of the flexible display screen 300, wrinkles are prone to occur at the folding position of the second display part 302. When the user opens the display screen 300 to display a picture, the position where the wrinkles occur on the second display part 302 cannot display a flat picture, thereby affecting the display quality of the picture.

[0071] In the embodiment of the present scheme, when the electronic device is in the unfolded state, the two connecting blocks 20 of the rotating shaft structure 100 can apply force away from the base 10 to the first housing 201 and the second housing 202 one by one, so as to “stretch outward” the two connecting blocks 20, so that the first display part 301 and the third display part 303 are subjected to force away from the second display part, thereby tensioning the second display part 302 and improving the screen crease of the flexible display screen 300. For specific operation principle and analysis process, please refer to the subsequent force analysis description.

[0072] As shown in FIG. 5, a decorative door plate 71 can be arranged on the side of the connecting block 20 away from the flexible display screen 300, and an intermediate decorative strip 72 can be arranged on the side of the base 10 away from the flexible display screen 300. The decorative door plate 71 can be two, arranged on the two sides of the base 10. The first side of the decorative door 71 is connected with the connecting block 20, and the second side of the decorative door plate 71 extends to the side wall of the intermediate decorative strip 72, so as to block the gap between the connecting block 20 and the base 10, thereby improving the appearance of the electronic device.

[0073] Further, the first side of the first side decorative door 71 of the base 10 can be hidden in the first housing 201, and the first side of the second side decorative door 71 of the base 10 can be hidden in the second housing 202. In order to further introduce how the rotating shaft mechanism 100 applies damping force to the switching of the electronic device between the folded state and the unfolded state, the specific structure will be described in detail below in combination with the drawings.

[0074] Figure 6 is a structural schematic diagram of a hinge mechanism in an unfolded state according to an embodiment of the present application. As shown in Figure 6, the hinge mechanism includes a base 10, connecting blocks 20, damping assemblies 30, swing arms 40, and first connecting rods 50. There are at least two connecting blocks 20 on both sides of the base 10, and the connecting blocks 20 are provided with damping assemblies 30. There are at least two swing arms 40 on both sides of the base 10, and the first ends 40a of the swing arms 40 are rotationally connected to the base 10, and the second ends 40b of the swing arms 40 are slidingly connected to the connecting blocks 20. The two ends of the first connecting rod 50 are rotationally connected to the swing arm 40 and the damping assembly 30 on the same side of the base 10. During the opening and closing of the hinge mechanism, the damping assembly 30 provides damping force for the relative sliding of the swing arm 40 relative to the connecting block 20 through the first connecting rod 50.

[0075] During the opening and closing of the hinge mechanism, the electronic device switches between a folded state and an unfolded state, and the connecting blocks 20 rotate around the base 10, and the connecting blocks 20 drive the swing arms 40 to rotate around the base 10.

[0076] The axis of rotation of the connecting block 20 around the base 10 and the axis of rotation of the swing arm 40 around the base 10 can be different axes, and the second end 40b of the swing arm 40 can slide on the connecting block 20.

[0077] During the sliding of the second end 40b of the swing arm 40 on the connecting block 20, the damping assembly 30 can apply resistance to the swing arm through the first connecting rod 50, thereby providing damping force for the hinge mechanism. Compared with the damping mode relying on the friction between the recess and the cam lifting rod, the sound can be reduced and the durability can be improved, thereby improving the damping performance of the hinge mechanism.

[0078] Figure 7 is a partial structural schematic diagram of a hinge mechanism according to an embodiment of the present application. As shown in Figure 7, the first end 50a of the first connecting rod 50 is rotationally connected to the swing arm 40, and the second end 50b of the first connecting rod 50 is rotationally connected to the damping assembly 30.

[0079] In some embodiments, each side of the base 10 includes at least one swing arm 40, at least two first connecting rods 50, and at least two damping assemblies 30, and the at least two first connecting rods 50 and the at least two damping assemblies 30 are arranged on both sides of the swing arm 40.

[0080] Each damping assembly 30 comprises at least one elastic member 31 and a slider 32; the first end 31a of the at least one elastic member abuts against the slider 32, and the second end 31b of the elastic member abuts against the connecting block 20; the slider 32 exerts a pressing force on the elastic member 31 in a sliding direction of the elastic member 31, so as to compress the elastic member 31. The compressed elastic member can exert a reverse force on the slider 32. The first end 50a of the first connecting rod is rotationally connected to the swing arm 40, and the second end 50b of the first connecting rod is rotationally connected to the slider 32.

[0081] In the opening and closing process of the rotating shaft mechanism, the first end 40a of the swing arm rotates relative to the base 10, and the second end 40b of the swing arm slides on the connecting block 20; in the sliding process, the swing arm 40 drives the first connecting rod 50 to rotate and pushes the first connecting rod 50 to move in the direction of the slider, so as to push the slider 32 to slide in the direction of the elastic member 31.

[0082] The slider 32 slides in the direction of the elastic member 31, so that the slider 32 presses the elastic member 31, and the elastic member 31 is compressed. The compressed elastic member 31 can exert a reverse force on the slider 32 under the action of elasticity, and the reverse force is transmitted to the swing arm 40 through the first connecting rod 50, so as to exert a sliding resistance on the swing arm 40. Specifically, the connecting block 20 exerts a damping force in the rotating process around the base 10.

[0083] Figure 8 is a partial structure diagram of the swing arm 40 of the rotating shaft mechanism after rotation shown in Figure 7. As shown in Figure 8, in some embodiments, the sliding direction of the slider 32 can be parallel to the axial direction X of the rotating shaft mechanism, but is not limited thereto. The sliding direction of the second end 40b of the swing arm relative to the connecting block 20 can be perpendicular to the axial direction X of the rotating shaft mechanism, but is not limited thereto.

[0084] In some embodiments, the parallel is substantially parallel, for example, the included angle between the two is between -10° and 10°, such as -10°, -5°, 0°, 5°, 10°, etc. The perpendicular is substantially perpendicular, for example, the included angle between the two is between 80° and 100°, such as 80°, 85°, 90°, 95°, 100°, etc. In some embodiments, the understanding of parallel and perpendicular is the same as above, and will not be repeated here.

[0085] Please refer to Figure 8, in the process of the rotating shaft mechanism changing from the flat state to the folded state, the connecting block 20 can be rotated in the first rotating direction around the base 10 under the action of external force, and the connecting block 20 drives the swing arm 40 to rotate in the first rotating direction around the base 10. The axis of rotation of the connecting block 20 around the base 10 and the axis of rotation of the swing arm 40 around the base 10 can be different axes (not shown), so that the second end 40b of the swing arm slides on the connecting block 20 in the first direction.

[0086] When the second end 40b of the swing arm 40 slides on the connecting block 20 in the first direction, the swing arm 40 pushes the first end 50a of the first link 50 to move away from the base 10. Since the distance between the second end 50b of the first link 50 and the base 10 remains substantially unchanged, the length of the first link 50 remains unchanged. The second end of the first link 50 gradually pushes the sliding block 32 to slide towards the elastic member 31 and compresses the elastic member 31.

[0087] As the connecting block 20 continues to rotate around the base 10 in the first rotation direction, the compression amount of the elastic member 31 gradually increases, and the damping force provided by the damping assembly 30 also gradually increases. When the first link 50 and the axial direction X of the hinge mechanism are substantially parallel, the compression amount of the elastic member 31 can reach a maximum, and the damping force provided by the damping assembly 30 also reaches a maximum.

[0088] Subsequently, as the connecting block 20 continues to rotate around the base 10 in the first rotation direction, the swing arm 40 pushes the first end 50a of the first link 50 to continue to move away from the base 10. The compression amount of the elastic member 31 gradually decreases until the hinge mechanism changes to the folded state.

[0089] During the process of changing the hinge mechanism from the folded state to the unfolded state (not shown), the connecting block 20 can be rotated around the base 10 in a second rotation direction by an external force. The second rotation direction can be the opposite direction of the first rotation direction. The connecting block 20 drives the swing arm 40 to rotate around the base 10 in the second rotation direction. The second end 40b of the swing arm 40 slides on the connecting block 20 in a second direction. The second direction can be the opposite direction of the first direction.

[0090] When the second end 40b of the swing arm 40 slides on the connecting block 20 in the second direction, the swing arm 40 pushes the first end 50a of the first link 50 to move towards the base 10. Since the distance between the second end 50b of the first link 50 and the base 10 remains substantially unchanged, the length of the first link 50 remains unchanged. The second end of the first link 50 gradually pushes the sliding block 32 to slide towards the elastic member 31 and compresses the elastic member 31.

[0091] As the connecting block 20 continues to rotate around the base 10 in the second rotation direction, the compression amount of the elastic member 31 gradually increases, and the damping force provided by the damping assembly 30 also gradually increases. When the first link 50 and the axial direction X of the hinge mechanism are substantially parallel, the compression amount of the elastic member 31 can reach a maximum, and the damping force provided by the damping assembly 30 also reaches a maximum.

[0092] Subsequently, as the connecting block 20 continues to rotate around the base 10 in the second rotation direction, the swing arm 40 pushes the first end 50a of the first link 50 to continue to move towards the base 10. The compression amount of the elastic member 31 gradually decreases until the hinge mechanism changes to the unfolded state.

[0093] In the embodiment of the present application, the user can feel the damping force from small to large during the process of using the rotating shaft mechanism to switch between the flat state and the folded state.

[0094] Figure 9 is an exploded structural schematic diagram of the rotating shaft mechanism shown in Figure 8. As shown in Figure 9, in some embodiments, the connecting block 20 includes a receiving groove 21 and a first protruding portion 22, the first protruding portion 22 is arranged on the side wall of the receiving groove 21, and the first sliding groove 23 is formed between the first protruding portion 22 and the bottom wall of the receiving groove 21. The sliding block 32 includes a body 321 and a second protruding portion 322, the second protruding portion 322 is arranged on the side wall of the body 321, and the second protruding portion 322 and the first sliding groove 23 are in sliding connection, so that the sliding connection between the sliding block 32 and the connecting block 20 can be realized.

[0095] In some embodiments, the first protruding portion 22 can be arranged on the side wall of both sides of the receiving groove 21, and the second protruding portion 322 is arranged on the side wall of both sides of the body 321, so that the stable sliding connection between the sliding block 32 and the connecting block 20 can be realized.

[0096] In some embodiments, the extension direction of the first sliding groove 23 is parallel to the axial direction X of the rotating shaft mechanism.

[0097] The elastic member 31 is arranged in the receiving groove 21, and the sliding block 32 is arranged on the first side 21a of the receiving groove. The first end 31a of the elastic member abuts against the sliding block 32, and the second end 31b of the elastic member abuts against the second side 21b of the receiving groove.

[0098] In order to facilitate the assembly of the sliding block 32, a mounting port 25 is arranged between the first protruding portion 22 and the first side 21a of the receiving groove, so as to facilitate the installation of the sliding block 32 from the mounting port 25 into the first sliding groove 23.

[0099] In some embodiments, the first side of the receiving groove 21 is provided with a avoiding port 26, and the first connecting rod 50 passes through the avoiding port 26. So that the two ends of the first connecting rod 50 are respectively connected with the swing arm 40 and the sliding block 32.

[0100] In order to improve the safety, the elastic member 31 can be covered by the cover plate in the receiving groove 21.

[0101] As shown in Figure 9, in some embodiments, the first end 50a of the first connecting rod 50 is provided with a first pin hole 51, the swing arm 40 is provided with a first pin shaft 41, and the first pin shaft 41 is rotatably connected with the first pin hole 51 along the axis of the first pin shaft 41.

[0102] As shown in FIG. 9, in some embodiments, the first link second end 50b is provided with a second pin hole 52, and the slider 32 is provided with a second pin shaft 323, and the second pin hole 52 and the second pin shaft 323 are rotationally connected with the axis of the second pin shaft 323.

[0103] In some embodiments, the first link first end 50a is not limited to the first pin hole 51, and a pin shaft can be used to rotationally connect the first link first end 50a and the pin hole of the swing arm 40. The first link second end 50b is not limited to the second pin hole 52, and a pin shaft can be used to rotationally connect the first link second end 50b and the pin hole of the swing arm 40.

[0104] In addition to the above-mentioned pin shaft and pin hole connection mode between the first link first end 50a and the swing arm 40, in some embodiments, a ball pin pair can also be used to rotationally connect the first link first end 50a and the swing arm 40 (not shown in the figure). The first link first end 50a is provided with a first ball pin seat, and the swing arm 40 is provided with a first ball pin. The first ball pin seat and the first ball pin form a ball pin pair to rotationally connect with the ball center of the first ball pin. Alternatively, the first link first end 50a is provided with a second ball pin, and the swing arm 40 is provided with a second ball pin seat. The second ball pin seat and the second ball pin form a ball pin pair to rotationally connect with the ball center of the second ball pin. By using a ball pin pair, the swing arm second end 40b and the connecting block 20 can move in multiple axial directions, thereby providing greater flexibility and freedom between the first link 50 and the swing arm 40.

[0105] In some embodiments, the first link 50 can be an equal-width link, or a link with a thick middle and thin ends, or a link with thin middle and thick ends.

[0106] FIG. 10 is a structural schematic diagram of a first link 50 of a rotation shaft mechanism according to an embodiment of the present application. As shown in FIG. 10, the edges 50c of the first link 50 on both sides are straight edges, so that the first link 50 is an equal-width link, which is convenient for processing. The first link first end 50a can be provided with a first pin hole 51, but is not limited thereto. The first link second end 50b can be provided with a third pin shaft, but is not limited thereto.

[0107] In some embodiments, the edges 50c of the first link 50 on both sides are convex or concave.

[0108] For example, in some embodiments, the edges 50c of the first link 50 on both sides are convex arc edges, so that the first link 50 has a thick middle and thin ends. In the case of a large bending moment, the first link 50 is not easy to bend, so that the first link 50 is suitable for application in a high-damping force environment.

[0109] For example, in some embodiments, the edges 50c on both sides of the first connecting rod 50 are outward convex sharp edges, so that the first connecting rod 50 is thicker in the middle and thinner at both ends, which is easier to produce than outward convex arc edges.

[0110] For example, in some embodiments, the edges 50c on both sides of the first connecting rod 50 are inward concave arc edges or inward concave sharp edges, so that the first connecting rod 50 is thinner in the middle and thicker at both ends, which can save space in the middle of the first connecting rod 50, and also facilitate weight reduction and cost reduction.

[0111] Continuing to refer to FIG. 9, in some embodiments, the side wall of the second end 40b of the swing arm includes a third protruding part 42; the connecting block 20 includes a first slot 24; the side wall of the first slot 24 includes a straight sliding groove 241, and the third protruding part 42 and the straight sliding groove 241 are in sliding connection. The swing arm 40 and the connecting block 20 are connected in a low pair connection mode, and the stress between the swing arm 40 and the connecting block 20 is relatively low, and the relative sliding is relatively stable.

[0112] In some embodiments, the third protruding part 42 can be arranged on the side wall on both sides of the second end 40b of the swing arm, and the side wall on both sides of the first slot 24 includes a straight sliding groove 241 to achieve stable sliding connection.

[0113] Further, the bottom wall of the first slot 24 is further provided with an auxiliary sliding groove 242 connected to the straight sliding groove 241, and the bottom of the swing arm 40 and the auxiliary sliding groove 242 are in sliding connection, which can further improve the stability of the sliding connection.

[0114] In some embodiments, the extension direction of the straight sliding groove 241 is parallel to the radial direction Y of the rotating shaft mechanism.

[0115] Different from the above-mentioned straight sliding groove 241, in some embodiments, an arc sliding groove can also be used (not shown), which can be used in cooperation with the above-mentioned ball pin pair, the side wall of the second end 40b of the swing arm includes a fourth protruding part; the connecting block 20 includes a second slot; the side wall of the second slot includes an arc sliding groove, and the fourth protruding part and the arc sliding groove are in sliding connection.

[0116] Different from the above-mentioned straight sliding groove 241, in some embodiments, the second end 40b of the swing arm and the connecting block 20 can also form a sliding connection in a high pair.

[0117] The elastic member 31 comprises at least one elastic line extending from the elastic member first end 31a to the elastic member second end 31b, and the at least one elastic line is helically extended to form a helical spring, and the elastic member first end 31a and the elastic member second end 31b are respectively arranged at two ends of the helical spring. In some embodiments, the helical spring can be formed by helically extending a cylindrical elastic line or a square column elastic line, which is convenient for production and processing.

[0118] In some embodiments, the shape of the elastic member 31 is not limited to a helical spring, and the shape of the elastic member 31 can also be realized by using a spring with other structural shapes. The at least one elastic line can be bent and extended in a plane to form a special-shaped spring, which can realize a thinner size and facilitate reducing the thickness of the spring on the connecting block 20.

[0119] For example, FIG. 11a is a structural schematic diagram of a first special-shaped elastic member 31 of a rotating shaft mechanism according to an embodiment of the present application. As shown in FIG. 11a, in some embodiments, the at least one elastic line can be bent and extended in a plane to form an S-shaped special-shaped spring, which is easy to process.

[0120] In some embodiments, the special-shaped spring can be formed by a ring structure. FIG. 11b is a structural schematic diagram of a third special-shaped elastic member 31 of a rotating shaft mechanism according to an embodiment of the present application. As shown in FIG. 11b, the edge 50c has a recess 311. The special-shaped spring is a ring structure 312 extending from the elastic member first end 31a to the elastic member second end 31b, and the ring-shaped edge 50c of the ring structure has a plurality of inward recesses 311. Specifically, the ring structure is rectangular, and the ring-shaped edge 50c of the rectangular ring structure has a plurality of inward rectangular recesses 311. By arranging the recess 311, the total length of the spring line can be increased, so that greater elasticity can be realized under the same space.

[0121] In some embodiments, the special-shaped spring can be formed by a ring structure, and the edge 50c is not provided with a recess. In some embodiments, the special-shaped spring is a flat ring structure, and the elastic member first end 31a and the elastic member second end 31b are respectively arranged on two sides in the width direction of the flat ring structure.

[0122] Taking the special-shaped spring formed by at least two ring structures as an example:

[0123] In some embodiments, the special-shaped spring can comprise at least two ring structures connected in sequence, and the adjacent two ring structures can be connected by at least one connecting part. Since at least two closed loop structures are adopted, the elasticity can be increased compared with the case of adopting one closed loop structure.

[0124] For example, FIG. 11c is a structure diagram of a third type of special-shaped elastic member 31 of the rotating shaft mechanism according to an embodiment of the present application. As shown in FIG. 11c, the special-shaped spring is composed of four annular structures 312 arranged in sequence, and two adjacent annular structures 312 are connected by two connecting portions.

[0125] In some embodiments, the edge 50c of each annular structure can be provided with or without a recess at the direction of both ends of the elastic member 31. By providing a recess, the area utilization is improved, and the elastic force of the elastic member 31 is increased.

[0126] For example, FIG. 11d is a structure diagram of a fourth type of special-shaped elastic member 31 of the rotating shaft mechanism according to an embodiment of the present application. As shown in FIG. 11d, the difference between the special-shaped spring and the third type of special-shaped elastic member 31 described above is that, in the present embodiment, the annular structure 312 is two connected to each other, two adjacent annular structures 312 are connected by one connecting portion, and the edge 50c of each annular structure is provided with a recess 311 at the direction of both ends of the elastic member 31, so as to improve the area utilization and increase the elastic force of the elastic member 31.

[0127] In some embodiments, at least two annular structures are nested to form a special-shaped elastic member 31, one end of the nested at least two annular structures is connected to each other as a first end 31a of the elastic member, and the other end of the nested at least two annular structures is connected to each other as a second end 31b of the elastic member. By using the nested mode, the area utilization is also improved, and the total length of the elastic wire is increased in the same space, so as to achieve greater elasticity.

[0128] FIG. 11e is a structure diagram of a fifth type of special-shaped elastic member 31 of the rotating shaft mechanism according to an embodiment of the present application. As shown in FIG. 11e, the special-shaped spring is formed by nesting three annular structures 312. One end of the nested three annular structures 312 is connected to each other as a first end 31a of the elastic member, and the other end of the nested three annular structures 312 is connected to each other as a second end 31b of the elastic member. In addition, the special-shaped spring with similar structure can also be composed of a plurality of arc-shaped elastic wires, and the two ends of the plurality of arc-shaped elastic wires are connected to form at least two arc-shaped springs, and the curved surfaces of the at least two arc-shaped springs are curved relative to each other. Since the special-shaped spring has a plurality of annular structures 312, the special-shaped spring can achieve greater elasticity.

[0129] In some embodiments, the number of swing arms 40 on the same side of the base 10 is not limited and can be at least one.

[0130] In some embodiments, the number of damping assemblies 30 on each side of the base 10 is not limited and can be at least one. The number of first connecting rods 50 on each side of the base 10 is not limited and can be at least one.

[0131] In some embodiments, the first connecting rod 50 corresponding to the rotary connection of each swing arm 40 can be one, so that a smaller number of first connecting rods 50 can be used to achieve the damping effect of the rotating shaft mechanism, occupy less space, and save costs.

[0132] In some embodiments, the damping assembly 30 corresponding to the rotary connection of each first connecting rod 50 can be one (not shown), so that a smaller number of damping assemblies 30 can be used to achieve the damping effect of the rotating shaft mechanism, occupy less space, and save costs.

[0133] Figure 12 is a force analysis diagram of the rotating shaft mechanism in the unfolded state according to an embodiment of the present application. In some embodiments, as shown in Figure 12, the first pin shaft 41 of the swing arm 40 is two, which are arranged on both sides of the swing arm 40. The base 10 is provided with at least two damping assemblies 30 and at least two first connecting rods 50 on each side, and the at least two damping assemblies 30 are arranged on both sides of each swing arm 40. Wherein, both ends of each first connecting rod 50 are rotatably connected with the slider 32 of the damping assembly 30 and the first pin shaft 41 on the same side of the swing arm 40. With this structure, in the axial direction X of the rotating shaft mechanism, the elastic force of the two damping assemblies 30 acting on both sides of the swing arm 40 through the first connecting rod 50 can be offset, thereby reducing the influence of the swing arm 40 of the rotating shaft mechanism on the load stress.

[0134] In some embodiments, the number of first connecting rods 50 corresponding to the rotary connection of each swing arm 40 is not limited to two (not shown).

[0135] Each first connecting rod 50 corresponds to at least one damping assembly 30. In some embodiments, the elastic member 31 of each damping assembly 30 is at least one (not shown), and both ends of the at least one elastic member 31 abut against a slider 32 and a connecting block 20. The number of elastic members 31 can be set according to the required damping force. When a larger damping force is required, the elastic member 31 of each damping assembly 30 is at least two, and both ends of the at least two elastic members 31 abut against a slider 32 and a connecting block 20. As shown in Figure 9, in this embodiment, both ends of the three elastic members 31 abut against a slider 32 and a connecting block 20, respectively.

[0136] The following will be a detailed state description and force analysis of the rotating shaft mechanism in the unfolded state and the folded state respectively:

[0137] As shown in Figure 12, in the flattened state of the rotating shaft mechanism, the first end 50a of the first connecting rod is close to the base 10 relative to the second end 50b of the first connecting rod. In some implementations, the damping assembly applies a force to the connecting block away from the base through the first connecting rod. When the rotating shaft mechanism is converted from the flattened state to the folded state, a damping force of the rotating shaft mechanism in the folded flattened state can be formed.

[0138] Taking the slider 32 on one side of the swing arm 40 as an example, the force analysis is as follows:

[0139] The elastic force of the elastic member 31 on the slider 32 is Ft1, which is the axial X force of the rotating shaft mechanism. The supporting force of the connecting block 20 on the slider 32 is Fn1, which is the radial Y force of the rotating shaft mechanism and points to the base 10. The force exerted by the first connecting rod 50 on the slider 32 is F1, which is a force that has an angle with the axial X force of the rotating shaft mechanism.

[0140] Taking the connecting block 20 on one side of the swing arm 40 as an example, the force analysis is as follows:

[0141] The elastic force of the elastic member 31 on the connecting block 20 is Ft2, which is the axial X force of the rotating shaft mechanism. Ft2 and Ft1 are in opposite directions. The elastic force of the slider 32 on the connecting block 20 is Fn2, which is the radial Y force of the rotating shaft mechanism, facing away from the base 10.

[0142] When the hinge mechanism transitions from the flattened state to the folded state, the connecting block 20 and the swing arm 40 rotate about the base 10 in a first rotational direction, and the connecting blocks 20 on both sides of the swing arm 40 rotate relative to each other. The second end 40b of the swing arm slides on the connecting block 20 in the first direction (away from the base 10), and the swing arm 40 moves away from the base 10 along the axial direction X of the hinge mechanism.

[0143] The slider 32 transmits the supporting force Fn1 of the connecting block 20 to the swing arm 40 via the first connecting rod 50, thereby forming a resistance to the swing arm 40 to prevent the arm from moving away from the base 10, thereby forming a damping force of the rotating shaft mechanism in the folded and flattened state.

[0144] In electronic devices with related flexible display screens, wrinkles will appear at the folding part of the second display part after the flexible display screen is folded for a long time, multiple times, and repeatedly. Then, after the user checks in on the flexible display screen, wrinkles will appear at the easily folded part of the second display part, affecting the display quality of the picture.

[0145] In some embodiments, in the unfolded state, the first connecting rod applies a force to the connecting block away from the base through the damping assembly, the first display portion and the third display portion rotate around the base 10 to substantially the same plane, and the elastic member 31 is in a compressed state. Because the first end 50a of the first connecting rod is closer to the base 10 than the second end 50b of the first connecting rod, the damping assembly 30 can form an elastic force on the connecting block 20 away from the base 10 through the first connecting rod 50, so that the connecting block 20 tends to move away from the base 10.

[0146] Thus, the connecting blocks 20 on both sides of the base 10 can drive the first display portion and the third display portion of the flexible display screen away from the second display portion of the flexible display screen, achieving "stretching" on both sides of the flexible display screen. In the unfolded state of the hinge mechanism, due to manufacturing tolerances, a small amount of displacement can be achieved between the connecting block 20 and the base 10 of the hinge mechanism, which can satisfy the outward stretching of the two connecting blocks 20, can tension the second display portion, and can improve the screen creases of the flexible display screen.

[0147] FIG. 13 is a force analysis diagram of a hinge mechanism in a folded state according to an embodiment of the present application. The hinge mechanism in the folded state is different from that in the unfolded state. As shown in FIG. 13, in the folded state of the hinge mechanism, the first end 50a of the first connecting rod is away from the base 10 relative to the second end 50b of the first connecting rod, thereby forming a damping force of the unfolded and folded hinge mechanism.

[0148] Taking the slider 32 on one side of the swing arm 40 as an example, the force analysis is as follows:

[0149] The elastic force of the elastic member 31 on the slider 32 is Ft3, which is the axial X force of the hinge mechanism. The supporting force of the connecting block 20 on the slider 32 is Fn3, which is the radial Y force of the hinge mechanism, directed away from the base 10. The force of the first connecting rod 50 on the slider 32 is F2, which is the force having an included angle with the axial X of the hinge mechanism.

[0150] Taking the connecting block 20 on one side of the swing arm 40 as an example, the force analysis is as follows:

[0151] The elastic force of the elastic member 31 on the connecting block 20 is Ft4, which is the axial X force of the hinge mechanism, and the direction of Ft4 is opposite to that of Ft3. The elastic force of the slider 32 on the connecting block 20 is Fn4, which is the radial Y force of the hinge mechanism, directed towards the base 10.

[0152] In the process of transforming from the folded state to the unfolded state, the connecting blocks 20 and the swing arms 40 rotate around the base 10 in the second rotating direction, and the connecting blocks 20 on both sides of the swing arms 40 rotate away from each other. The second ends 40b of the swing arms 40 slide on the connecting blocks 20 in the second direction (close to the base 10) opposite to the first direction, and the swing arms 40 generate a movement close to the base 10 in the axial direction X of the hinge mechanism.

[0153] The slider 32 transmits the supporting force Fn3 of the connecting blocks 20 to the swing arms 40 through the first connecting rod 50, and forms a resistance to the movement of the swing arms 40 close to the base 10, thereby forming a damping force for unfolding the hinge mechanism.

[0154] Figure 14 is an enlarged view of A in Figure 6. As shown in Figure 14, in some embodiments, in order to realize stable rotatable connection of the swing arms 40 and the base 10, the hinge mechanism further comprises at least two second connecting rods 60, which are arranged on both sides of the base 10. The first ends of the second connecting rods 60 are rotatably connected to the base 10, and the second ends of the second connecting rods 60 are rotatably connected to the connecting blocks 20. Under the connection of the second connecting rods 60, the hinge mechanism can limit the positions of the base 10 and the connecting blocks 20 in the process of transforming from the folded state to the unfolded state, thereby improving the stability of the hinge mechanism in the process of transforming from the folded state to the unfolded state.

[0155] The first end of the first second connecting rod 60 is rotatably connected to the first side of the base 10 and rotatably connected to the first axis, and the second end of the first second connecting rod 60 is rotatably connected to the first connecting block 20. The first end of the first swing arm 40 is rotatably connected to the first side of the base 10 and rotatably connected to the second axis.

[0156] The first end of the first second connecting rod 60 is rotatably connected to the first side of the base 10 and rotatably connected to the first axis, and the second end of the first second connecting rod 60 is rotatably connected to the first connecting block 20. The first end of the first swing arm 40 is rotatably connected to the first side of the base 10 and rotatably connected to the second axis.

[0157] The first end of the first second connecting rod 60 is rotatably connected to the first side of the base 10 and rotatably connected to the first axis, and the second end of the first second connecting rod 60 is rotatably connected to the first connecting block 20. The first end of the first swing arm 40 is rotatably connected to the first side of the base 10 and rotatably connected to the second axis.

[0158] In the embodiment in which the second end 40b of the swing arm and the connecting block 20 are connected by a straight sliding slot 241, for the sake of easy understanding, FIG. 15 is a schematic diagram of a first mechanism diagram of the rotating shaft mechanism according to an embodiment of the present application. As shown in FIG. 15, in some embodiments in which the rotating shaft mechanism applies the second connecting rod 60, the rotating shaft mechanism operates as follows: in the process of switching between the folded state and the unfolded state, the connecting block 20 rotates around the base 10, the connecting block 20 drives the swing arm 40 and the second connecting rod 60 to rotate around the base 10, and the second end 40b of the swing arm slides on the straight sliding slot 241 of the connecting block 20. In the extension direction of the straight sliding slot, the second connecting rod 60 can limit the relative distance between the base 10 and the connecting block 20, thereby improving the stability of the rotating shaft mechanism.

[0159] In the embodiment in which the second end 40b of the swing arm and the connecting block 20 are connected by an arc sliding slot, for the sake of easy understanding, FIG. 16 is a schematic diagram of a second mechanism diagram of the rotating shaft mechanism according to an embodiment of the present application. As shown in FIG. 16, in some embodiments in which the rotating shaft mechanism applies the second connecting rod 60, the rotating shaft mechanism operates as follows: the base 10, the swing arm 40, the connecting block 20, and the second connecting rod 60 are sequentially connected to form a four-bar linkage. In the process of switching between the folded state and the unfolded state, the connecting block 20 rotates around the base 10, the connecting block 20 drives the swing arm 40 and the second connecting rod 60 to rotate around the base 10, and the second end 40b of the swing arm rotates on the arc sliding slot of the connecting block 20. Since the base 10, the swing arm 40, the connecting block 20, and the second connecting rod 60 are sequentially connected to form a four-bar linkage, the second connecting rod 60 can limit the relative rotation angle between the connecting block 20 and the swing arm 40, thereby improving the stability of the rotating shaft mechanism.

[0160] In the embodiment in which the sliding connection between the second end 40b of the swing arm and the connecting block 20 is formed by a higher pair, for the convenience of understanding, FIG. 17 is a schematic diagram of a third mechanism diagram of the swing mechanism according to an embodiment of the present application. As shown in FIG. 17, in some embodiments of the swing mechanism in which the second connecting rod 60 is applied, the mechanism of the swing mechanism operates as follows: the sliding swing shaft 43 of the swing arm 40 is rotatably and slidably connected in the higher-pair sliding groove 27 of the connecting block 20, forming a higher-pair connection. During the conversion between the folded state and the unfolded state of the swing mechanism, the connecting block 20 rotates around the base 10, and the connecting block 20 can drive the swing arm 40 and the second connecting rod 60 to rotate around the base 10. The swing arm 40 and the higher-pair sliding groove 27 of the connecting block 20 can simultaneously rotate and slide, and the second connecting rod 60 can limit the relative distance between the base 10 and the connecting block 20, thereby improving the stability of the swing mechanism. As shown in FIGS. 2 and 3, an electronic device according to an embodiment of the present application includes the swing mechanism 100 of the above-mentioned embodiment and a flexible display screen 300. The two sides of the flexible display screen 300 rotate synchronously around the base 10 with the swing arms on the two sides of the base 10. The swing mechanism moves synchronously with the first display part 301 and the third display part 303 relative to folding and unfolding, and can realize the application of damping force to the folding and unfolding of the electronic device. Since the swing mechanism has high durability and the damping effect is not easy to decay, the user experience during the folding process of the electronic device can be improved.

[0161] In addition, the connecting blocks on the two sides of the base can apply force to the first display part and the third display part of the flexible display screen to move away from the second display part of the flexible display screen. Due to the existence of machining tolerances, there is a certain movement space at the connection between the first end of the second connecting rod and the base, at the connection between the second end of the second connecting rod and the connecting block, and at the connection between the swing arm and the base, so that the two sides of the flexible display screen can be "stretched", thereby improving the screen creases of the flexible display screen.

[0162] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0163] While the application has been illustrated and described in connection with certain preferred embodiments, it will be readily apparent to those of ordinary skill in the art that various changes in form and detail can be made without departing from the spirit and scope of the application.

Claims

1. A rotating shaft mechanism, characterized in that: include: base; at least two connecting blocks, located on both sides of the base, the connecting blocks being provided with damping components; At least two swing arms are respectively provided on both sides of the base, wherein a first end of the swing arm is rotatably connected to the base, and a second end of the swing arm is slidably connected to the connecting block; a first connecting rod, wherein both ends of the first connecting rod are rotatably connected to the swing arm and the damping assembly on the same side of the base; During the opening and closing process of the rotating shaft mechanism, the damping assembly provides a damping force for the relative sliding of the swing arm relative to the connecting block through the first connecting rod.

2. The rotating shaft mechanism according to claim 1, characterized in that: The first end of the first connecting rod is rotatably connected to the swing arm, and the second end of the first connecting rod is rotatably connected to the damping assembly; In the flattened state of the rotating shaft mechanism, the first end of the first connecting rod is close to the base relative to the second end of the first connecting rod, and the damping assembly applies a supporting force to the connecting block away from the base through the first connecting rod.

3. The rotating shaft mechanism according to claim 1, wherein: The first end of the first connecting rod is rotatably connected to the swing arm, and the second end of the first connecting rod is rotatably connected to the damping assembly; When the rotating shaft mechanism is in the folded state, the first end of the first connecting rod is away from the base relative to the second end of the first connecting rod. The damping assembly applies a supporting force to the connecting block close to the base through the first connecting rod.

4. The rotating shaft mechanism according to claim 1, wherein: The damping assembly includes an elastic member and a slider; The first end of the elastic member abuts against the slider, and the second end of the elastic member abuts against the connecting block; The first end of the first connecting rod is rotatably connected to the swing arm, and the second end of the first connecting rod is rotatably connected to the slider.

5. The rotating shaft mechanism according to claim 4, characterized in that: The connecting block includes a receiving groove and a first protrusion, wherein the first protrusion is provided on a side wall of the receiving groove, and a first sliding groove is formed between the first protrusion and the bottom wall of the receiving groove; The slider includes a body and a second protrusion, wherein the second protrusion is arranged on a side wall of the body, and the second protrusion is slidably connected to the first sliding groove.

6. The rotating shaft mechanism according to claim 5, characterized in that: An extending direction of the first sliding groove is parallel to an axial direction of the rotating shaft mechanism.

7. The rotating shaft mechanism according to claim 5, characterized in that: The first end of the first connecting rod is provided with a first pin hole, the second end of the first connecting rod is provided with a second pin hole, the swing arm is provided with a first pin shaft, and the first pin shaft is rotatably connected to the first pin hole about the axis of the first pin shaft.

8. The rotating shaft mechanism according to claim 7, characterized in that: The body of the slider is provided with a second pin shaft, and the second pin shaft is rotatably connected to the second pin hole along the axis of the second pin shaft.

9. The rotating shaft mechanism according to claim 7, characterized in that: At least one damping assembly and at least one first connecting rod are provided on each side of the base.

10. The rotating shaft mechanism according to claim 9, characterized in that: There are two first pins, which are respectively arranged on both sides of the swing arm; At least two damping assemblies and at least two first connecting rods are provided on each side of the base, and at least two damping assemblies are provided on both sides of each swing arm; wherein, Both ends of each first connecting rod are rotatably connected to the slider of the damping assembly and the first pin shaft on the same side of the swing arm.

11. The rotating shaft mechanism according to claim 5, characterized in that: The first end of the first connecting rod is provided with a first ball pin seat, and the swing arm is provided with a first ball pin. The first ball pin seat and the first ball pin form a ball pin pair, and are rotatably connected with the ball center of the first ball pin. or, The first end of the first connecting rod is provided with a second ball pin, and the swing arm is provided with a second ball pin seat. The second ball pin seat and the second ball pin form a ball pin pair, and are rotatably connected at the ball center of the second ball pin.

12. The rotating shaft mechanism according to any one of claims 4 to 11, characterized in that: The elastic member includes at least one elastic line, and from the first end to the second end of the elastic member, the at least one elastic line extends spirally or bends in a plane.

13. The rotating shaft mechanism according to any one of claims 1 to 12, characterized in that: The side wall of the second end of the swing arm includes a third protrusion; the connecting block includes a first groove; the side wall of the first groove includes a linear slide groove, and the third protrusion and the linear slide groove are slidably connected.

14. The rotating shaft mechanism according to claim 13, wherein: The extension direction of the linear slide is parallel to the radial direction of the rotating shaft mechanism.

15. The rotating shaft mechanism according to claim 11, wherein: The side wall of the second end of the swing arm includes a fourth protrusion; the connecting block includes a second groove; the side wall of the second groove includes an arc-shaped sliding groove, and the fourth protrusion and the arc-shaped sliding groove are slidably connected.

16. An electronic device, characterized in that: include: The rotating shaft mechanism according to any one of claims 1 to 15; a first shell and a second shell, wherein the first shell and the second shell are respectively provided on connecting blocks on both sides of the base of the rotating shaft mechanism; A flexible display screen covers the first shell and the second shell.

Images