Hinge mechanism and electronic device

Abstract

Disclosed in the present application are a hinge mechanism and an electronic device, belonging to the technical field of communications. The hinge mechanism comprises a base, a first swing arm, and a frame body connecting piece. The first swing arm comprises a first swing arm body, a first rotating connecting part, and a second rotating connecting part, the first rotating connecting part and the second rotating connecting part being disposed at two ends of the first swing arm body, the first rotating connecting part being rotatably connected to the base, and the second rotating connecting part being rotatably connected to the frame body connecting piece. The frame body connecting piece is provided with a first sliding slot, the first sliding slot having a component along a first direction, the first direction being a direction perpendicular to the plane on which the first swing arm body is located, the second rotating connecting part being a cylindrical structure, and the second rotating connecting part being located in the first sliding slot and having a moving fit with the first sliding slot. As the first swing arm rotates with respect to the base, the second rotating connecting part slides and rotates in the first sliding slot. The electronic device comprises a first device body, a second device body, and the hinge mechanism.

Description

Hinge mechanism and electronic equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on November 3, 2023, with application number 202311467166.X and invention name “Hinge mechanism and electronic device”. The entire contents of the Chinese patent application are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a hinge mechanism and electronic equipment. Background Art

[0004] With the development of science and technology, people are becoming more and more dependent on electronic devices. In order to improve the portability and comfort of electronic devices, the application range of foldable electronic devices is becoming more and more extensive.

[0005] In related technologies, foldable electronic devices rely on a hinge mechanism to achieve folding and unfolding. The hinge mechanism includes a base and a swing arm, which is rotatably connected to the base. During the process of switching the hinge mechanism from an unfolded state to a folded state, the swing arm rotates a certain angle relative to the base. The matching area between the swing arm and the base is small, the stability of the swing arm is reduced, and the swing arm is prone to jamming, breakage, and deformation, which reduces the folding reliability of the hinge mechanism.

[0006] Summary of the Invention

[0007] The purpose of the embodiments of the present application is to provide a hinge mechanism and an electronic device that can solve the problem of low folding reliability of the hinge mechanism in the related art.

[0008] In a first aspect, an embodiment of the present application provides a hinge mechanism, comprising a base, a first swing arm, and a frame connector; wherein,

[0009] The first swing arm includes a first swing arm body, a first rotation connection portion and a second rotation connection portion, wherein the first rotation connection portion and the second rotation connection portion are provided at both ends of the first swing arm body, the first rotation connection portion is rotationally connected to the base, and the second rotation connection portion is rotationally connected to the frame connection member;

[0010] The frame connecting piece is provided with a first slide groove, the first slide groove has a component along a first direction, the first direction is a direction perpendicular to the plane where the first swing arm body is located, the second rotating connection part is a cylindrical structure, the second rotating connection part is located in the first slide groove and movably cooperates with the first slide groove; during the rotation of the first swing arm relative to the base, the second rotating connection part slides and rotates in the first slide groove.

[0011] In a second aspect, an embodiment of the present application further provides an electronic device, comprising a first device body, a second device body, and the above-mentioned hinge mechanism, wherein the first device body is connected to the second device body via the hinge mechanism;

[0012] During the relative rotation of the first device body and the second device body, the electronic device switches between an unfolded state and a folded state.

[0013] In an embodiment of the present application, an external force acts on the frame connecting member, and the frame connecting member rotates relative to the base, which will drive the first swing arm to rotate relative to the base. However, since the first swing arm and the frame connecting member are rotatably connected through the cylindrical structure and the first slide groove, the first swing arm can not only rotate relative to the frame connecting member, but also slide relative to the frame connecting member. Moreover, the first slide groove has a component along the first direction. In this way, during the process of both the frame connecting member and the first swing arm rotating relative to the base, the first swing arm can generate a sliding amount in the first direction relative to the frame connecting member, thereby reducing the rotation angle of the first swing arm relative to the base while ensuring the rotation angle of the frame, thereby improving the rotation stability of the first swing arm, and helping to improve the folding reliability of the hinge mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG1 is a schematic structural diagram of a hinge mechanism disclosed in an embodiment of the present application;

[0015] FIG2 is a schematic structural diagram of the hinge mechanism disclosed in an embodiment of the present application from another perspective;

[0016] FIG3 is a schematic diagram of a partial structure of a hinge mechanism disclosed in an embodiment of the present application;

[0017] FIG4 is a cross-sectional view of the section AA in FIG3 ;

[0018] FIG5 is a cross-sectional view at BB in FIG3 ;

[0019] FIG6 is a cross-sectional view of a portion CC in FIG3 ;

[0020] FIG7 is a cross-sectional view at DD in FIG3 ;

[0021] FIG8 is an exploded view of a portion of the hinge mechanism disclosed in an embodiment of the present application in an expanded state;

[0022] FIG9 is an exploded view of a portion of the hinge mechanism disclosed in an embodiment of the present application in a folded state.

[0023] FIG10 is a cross-sectional view of the hinge mechanism at AA in FIG3 during folding;

[0024] FIG11 is a cross-sectional view of the hinge mechanism at CC in FIG3 during folding;

[0025] FIG12 is a schematic structural diagram of a first swing arm disclosed in an embodiment of the present application;

[0026] FIG13 is a schematic structural diagram of a frame connector disclosed in an embodiment of the present application;

[0027] FIG14 is a schematic structural diagram of a second swing arm disclosed in an embodiment of the present application;

[0028] FIG15 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application;

[0029] FIG16 is a side view of the electronic device disclosed in an embodiment of the present application.

[0030] Description of the accompanying drawings: 100-base, 110-arc groove, 120-rotating shaft, 200-first swing arm, 210-first swing arm body, 220-first rotating connection part, 230-second rotating connection part, 240-second slide groove, 250-limiting groove, 300-frame connecting member, 310-first slide groove, 320-limiting protrusion, 330-third slide groove, 340-fourth slide groove, 350-fifth slide groove, 410-second swing arm, a-first driving surface, 411-second swing arm body, 412-third rotating connection part, 413-fourth rotating connection part, 414-first slide rail, 420-third swing arm, c-third driving surface, 430-fourth swing arm, e-fifth driving surface, 510-first moving member, b-second driving surface, 520-second moving member, d-fourth driving surface, 530 - third moving member, f - sixth driving surface, 600 - elastic member, 700 - pressure cover, 800 - support plate, 910 - first device body, 920 - second device body, X - first direction, Y - second direction, Z - third direction. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0032] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0033] The hinge mechanism and electronic device provided in the embodiments of the present application are described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0034] Referring to Figures 1-16 , the hinge mechanism disclosed in the embodiments of the present application is applied to an electronic device, which is folded and unfolded by the hinge mechanism. The hinge mechanism includes a base 100, a first swing arm 200, and a frame connector 300. The base 100 serves as a mounting base for the first swing arm 200 and the frame connector 300. The first swing arm 200 is rotatably connected to the base 100, and the frame connector 300 is rotatably connected to the first swing arm 200. The frame connector 300 can drive the first swing arm 200 to rotate relative to the base 100.

[0035] As shown in FIG12 , the first swing arm 200 includes a first swing arm body 210, a first rotating connection portion 220, and a second rotating connection portion 230. Optionally, the first swing arm body 210, the first rotating connection portion 220, and the second rotating connection portion 230 can be an integrated structure. The first swing arm body 210 is the basis for the installation of the first rotating connection portion 220 and the second rotating connection portion 230. The first rotating connection portion 220 and the second rotating connection portion 230 are arranged at both ends of the first swing arm body 210. The first rotating connection portion 220 is rotationally connected to the base 100, and the second rotating connection portion 230 is rotationally connected to the frame connector 300. Optionally, the hinge mechanism further includes a rotating shaft 120, the base 100 is connected to the rotating shaft 120, and the first rotating connection portion 220 can be a cylindrical portion that can be sleeved on the outside of the rotating shaft 120 to achieve rotational connection between the base 100 and the first rotating connection portion 220.

[0036] The frame connector 300 is provided with a first slot 310 having a component along a first direction, which is a direction perpendicular to the plane in which the first swing arm body 210 is located. The first direction can be referred to as the "X" direction in Figure 4. The second rotating connection portion 230 is a cylindrical structure. The second rotating connection portion 230 is located in the first slot 310 and flexibly cooperates with the first slot 310. The surface of the cylindrical structure contacts the groove wall of the first slot 310. During the rotation of the first swing arm 200 relative to the base 100, the second rotating connection portion 230 slides and rotates within the first slot 310. In other words, during the process of the frame connector 300 driving the first swing arm 200 to rotate relative to the base 100, the cylindrical structure and the first slot 310 enable the first swing arm 200 to generate a slippage in the first direction relative to the frame connector 300.

[0037] Optionally, the first slide groove 310 can be an arc-shaped structure, or can extend directly along the first direction, or can be a slide groove of other shapes. This embodiment does not limit the structure of the first slide groove 310. As long as the first slide groove 310 has a component along the first direction, it can ensure that the frame connector 300 and the first swing arm 200 can rotate smoothly relative to the base 100.

[0038] In the embodiment of the present application, an external force acts on the frame connecting member 300, and the frame connecting member 300 rotates relative to the base 100, which will drive the first swing arm 200 to rotate relative to the base 100. However, since the first swing arm 200 and the frame connecting member 300 are rotatably connected through the cylindrical structure and the first sliding groove 310, the first swing arm 200 can not only rotate relative to the frame connecting member 300, but also slide relative to the frame connecting member 300. The matching structure is simple, and there is no need to set a separate adapter component between the first swing arm 200 and the frame connecting member 300; the first sliding groove 310 has a component along the first direction, so that when the frame connecting member 300 is rotated, the first swing arm 200 can slide relative to the frame connecting member 300. During the process of both the component 300 and the first swing arm 200 rotating relative to the base 100, the first swing arm 200 can generate a slip amount in the first direction relative to the frame connecting component 300, so that the rotation angle of the first swing arm 200 relative to the base 100 is smaller than the rotation angle of the frame connecting component 300 relative to the base 100, and the rotation angle of the first swing arm 200 is reduced, which is beneficial to increasing the matching area between the first swing arm 200 and the base 100. While ensuring the rotation angle of the frame, the rotation angle of the first swing arm 200 relative to the base 100 is reduced, thereby improving the rotation stability of the first swing arm 200, and helping to improve the folding reliability of the hinge mechanism.

[0039] Moreover, referring to Figure 10, it can be seen that since the first swing arm 200 generates a slip amount in the first direction relative to the frame connector 300, during the folding process of the hinge mechanism, the first swing arm 200 can adjust its own position following the position of the frame connector 300. When the hinge mechanism is in a folded state, in the thickness direction of the hinge mechanism, the space occupied by the first swing arm 200 basically coincides with the space occupied by the frame connector 300, that is, at this time the first swing arm 200 will not protrude from the frame connector 300, and the space occupied by the first swing arm 200 and the frame connector 300 is reduced, which is conducive to reducing the thickness of the hinge mechanism in the folded state and realizing the lightweight and thin hinge mechanism.

[0040] In an optional embodiment, the first slide groove 310 may only have a component in the first direction, that is, the first slide groove 310 extends directly along the first direction. In another embodiment, as shown in FIG4 , the first slide groove 310 also has a component in the second direction, where the second direction is perpendicular to the first direction and perpendicular to the direction of the axis of the second rotating connection portion 230. The second direction can refer to the "Y" direction in FIG4 . With this embodiment, during the unfolding of the hinge mechanism, the position of the first swing arm 200 relative to the base 100 in the second direction remains unchanged, while the frame connector 300 slips relative to the first swing arm 200 in the second direction. Therefore, the frame connector 300 will be displaced relative to the base 100 in the second direction, and the frame connector 300 will be closer to the base 100 by a certain distance. In this way, the space occupied by the frame connector 300, the first swing arm 200, and the base 100 in the width direction of the hinge mechanism is reduced, which is conducive to reducing the width of the hinge mechanism.

[0041] In an optional embodiment, as shown in FIG12 , the second rotating connection portion 230 protrudes from the surface of the first swing arm body 210 in a third direction, the third direction being perpendicular to the first direction and parallel to the direction in which the axis of the second rotating connection portion 230 is located. The third direction can refer to the "Z" direction shown in FIG12 . Optionally, the third direction is perpendicular to the first direction and the second direction mentioned above, respectively. With this embodiment, the direction in which the second rotating connection portion 230 protrudes is different from the direction in which the second swing arm 410 and the frame connector 300 slide relative to each other, thereby preventing the second rotating connection portion 230 from disengaging from the first slide groove 310 during the relative sliding of the second swing arm 410 and the frame connector 300, thereby ensuring that the second rotating connection portion 230 and the first slide groove 310 continue to cooperate.

[0042] Of course, in an embodiment where the first slide groove 310 only has a component in the first direction, the second rotating connection portion 230 may also protrude from the surface of the first swing arm body 210 in other directions. Optionally, the second rotating connection portion 230 may also protrude from the surface of the first swing arm body 210 in the second direction.

[0043] In an optional embodiment, the difference between the groove width of the first chute 310 and the diameter of the second rotating connection portion 230 is within a preset range. Optionally, the preset range is a range between 0 and a preset value, and the preset value can be 0.05 mm or other values. The preset value can be set as needed, that is, the groove width of the first chute 310 and the diameter of the second rotating connection portion 230 can be equal, and the difference between the groove width of the first chute 310 and the diameter of the second rotating connection portion 230 can also be less than the preset value.

[0044] With this embodiment, the gap between the second rotating connection part 230 and the first sliding groove 310 is small, ensuring the stability of the second rotating connection part 230 sliding and rotating in the first sliding groove 310 and preventing the second rotating connection part 230 from shaking in the first sliding groove 310.

[0045] In an optional embodiment, as shown in FIG13 , the frame connector 300 is provided with a limiting protrusion 320, and as shown in FIG12 , the first swing arm 200 is provided with a limiting groove 250. The limiting protrusion 320 and the limiting groove 250 cooperate to limit the direction in which the first slide groove 310 extends. Optionally, during the rotation of the frame connector 300 and the first swing arm 200 relative to the base 100, the limiting protrusion 320 may extend into the limiting groove 250 and may come into contact with the limiting groove 250.

[0046] In this embodiment, the limiting protrusion 320 and the limiting groove 250 limit the relative sliding position of the first swing arm 200 and the frame connector 300, preventing excessive sliding displacement. This further prevents the second rotating connection portion 230 from sliding out of the first sliding groove 310, ensuring a stable connection between the frame connector 300 and the first swing arm 200.

[0047] Of course, in other embodiments, the frame connector 300 and the first swing arm 200 may not be provided with the limiting protrusion 320 and the limiting groove 250, and the hinge mechanism may limit the relative sliding position of the frame connector 300 and the first swing arm 200 through other components.

[0048] In an optional embodiment, the number of the second rotating connection portion 230 and the number of the first sliding groove 310 are both one.

[0049] In another embodiment, as shown in Figures 12 and 13, the number of the second rotating connection parts 230 and the first sliding grooves 310 is at least two, and the second rotating connection parts 230 correspond to the first sliding grooves 310 one by one, wherein the two second rotating connection parts 230 are arranged opposite to each other in the direction of the axis of the second rotating connection part 230, and wherein the two first sliding grooves 310 corresponding to the two second rotating connection parts 230 are arranged opposite to each other.

[0050] In this embodiment, by providing multiple second rotational connections 230 and multiple first slots 310, different positions of the frame connector 300 are rotatably connected to different positions of the first swing arm 200, which helps improve the connection stability between the frame connector 300 and the first swing arm 200 and enhances the reliability of the hinge mechanism. Furthermore, the two first slots 310 are arranged opposite each other, allowing the first swing arm 200 and the frame connector 300 to be limitedly engaged in two opposite directions of the axis of the second rotational connection 230, preventing the second rotational connection 230 from disengaging from the corresponding first slot 310.

[0051] In a further embodiment, as shown in FIG5 , the limiting protrusion 320 is located between two opposing first chute grooves 310, and the limiting groove 250 is located between two opposing second rotational connection portions 230. With this embodiment, the limiting protrusion 320 and the limiting groove 250 can simultaneously limit the positions of the two matching sets of first chute grooves 310 and second rotational connection portions 230, preventing the two limiting protrusions 320 from disengaging from the corresponding first chute grooves 310.

[0052] Of course, in other embodiments, the limiting protrusion 320 and the limiting groove 250 may also be set at other positions.

[0053] In an optional embodiment, the hinge mechanism also includes a second swing arm 410, as shown in Figure 14, the second swing arm 410 includes a second swing arm body 411, a third rotating connection part 412 and a fourth rotating connection part 413, the second swing arm body 411 is the basis for setting the third rotating connection part 412 and the fourth rotating connection part 413, the third rotating connection part 412 and the fourth rotating connection part 413 are arranged at both ends of the second swing arm body 411, and the third rotating connection part 412 is rotatably connected to the base 100. Optionally, the hinge mechanism also includes a rotating shaft 120, which is connected to the base 100, and the third rotating connection part 412 is sleeved on the outside of the rotating shaft 120, and the second swing arm 410 can rotate relative to the rotating shaft 120. Furthermore, the second swing arm body 411 is slidably connected to the frame connector 300, and the fourth rotational connection portion 413 is movably connected to the first swing arm body 210. When the frame connector 300 drives the second swing arm 410 to rotate relative to the base 100, the second swing arm 410 slides and rotates relative to the first swing arm 200. Optionally, the second swing arm body 411, the third rotational connection portion 412, and the fourth rotational connection portion 413 can be an integrated structure.

[0054] The first swing arm body 210 is provided with a second slide groove 240. The second slide groove 240 has components along a first direction and a second direction, the second direction being perpendicular to the first direction and the direction of the axis of the second rotational connection portion 230. The fourth rotational connection portion 413 is a cylindrical structure. The fourth rotational connection portion 413 is located in the second slide groove 240 and movably cooperates with the second slide groove 240. The surface of the cylindrical structure contacts the groove wall of the second slide groove 240. When the second swing arm 410 rotates relative to the base 100, the fourth rotational connection portion 413 slides and rotates within the second slide groove 240. In other words, when the frame connector 300 drives the second swing arm 410 to rotate relative to the base 100, the cylindrical structure and the second slide groove 240 enable the second swing arm 410 to generate a sliding amount relative to the first swing arm 200 in the first direction and the second direction.

[0055] Optionally, the second slide groove 240 can be an arc-shaped structure, a linear structure, or a slide groove of other shapes. This embodiment does not limit the structure of the second slide groove 240. As long as the second slide groove 240 has components along the first direction and the second direction, it can ensure that the second swing arm 410 moves smoothly relative to the first swing arm 200.

[0056] With this embodiment, while the second swing arm 410 and the first swing arm 200 are each rotatably connected to the frame connector 300, the second swing arm 410 and the first swing arm 200 are further movably connected, thereby improving the stability of the connection and effectively preventing problems such as shaking of the first swing arm 200 during movement. Moreover, the second swing arm 410 and the first swing arm 200 can slide and rotate relative to each other without affecting the normal movement of the second swing arm 410 and the first swing arm 200 relative to the frame connector 300. In addition, the matching structure of the second slide groove 240 and the fourth rotational connection portion 413 is simple, eliminating the need for a separate adapter between the first swing arm 200 and the second swing arm 410, thereby simplifying the structure of the hinge mechanism.

[0057] In an alternative embodiment, as shown in FIG7 , one of the frame connector 300 and the second swing arm body 411 is provided with a third slide groove 330, and the other is provided with a first slide rail 414. The first slide rail 414 extends into the third slide groove 330, and the first slide rail 414 and the third slide groove 330 are slidably engaged. Alternatively, the frame connector 300 can be provided with the third slide groove 330, and the second swing arm body 411 can be provided with the first slide rail 414; or alternatively, the frame connector 300 can be provided with the first slide rail 414, and the second swing arm body 411 can be provided with the third slide groove 330. In this manner, relative sliding between the frame connector 300 and the second swing arm body 411 is directly achieved through the mating third slide groove 330 and first slide rail 414, without the need for a complex sliding connection structure.

[0058] Optionally, as shown in FIG. 14 , the fourth rotation connection portion 413 and the first slide rail 414 are disposed opposite to each other.

[0059] Of course, in other embodiments, the frame connector 300 and the second swing arm body 411 may also be slidably connected in other ways.

[0060] In the scheme of the present application, as shown in Figure 1, hinge mechanism also comprises first moving member 510 and elastic member 600, the 3rd rotation connection part 412 is provided with the first driving curved surface a, the first moving member 510 is provided with the second driving curved surface b, the first driving curved surface a and the second driving curved surface b cooperate, the first moving member 510 is connected to the elastic member 600, and the first moving member 510 is driven to move by the first driving curved surface a and the second driving curved surface b when the 3rd rotation connection part 412 rotates, and the first moving member 510 acts on the elastic member 600, so that the elastic member 600 produces elastic deformation.Wherein, the elastic member 600 can be but not limited to a spring, and optionally, the elastic member 600 can be sleeved on the outside of rotating shaft 120.Optionally, the first driving curved surface a and the second driving curved surface b both comprise a plurality of first concave surfaces and a plurality of first convex surfaces, and the first concave surface and the first convex surface are alternately distributed on the circumference of the 3rd rotation connection part 412.

[0061] When using this embodiment, when the second swing arm 410 rotates, it will drive the first movable part 510 to move, causing the elastic part 600 to produce an elastic deformation. The elastic force generated by the elastic part 600 will act in the opposite direction to the second swing arm 410, increasing the damping force that the second swing arm 410 is subjected to during the rotation process, thereby improving the damping effect of the hinge mechanism, and helping the hinge mechanism to maintain a certain folding angle.

[0062] In an optional embodiment, the hinge mechanism further includes a third swing arm 420 and a second movable member 520. The third swing arm 420 is rotatably connected to the base 100 and is slidably connected to the frame connector 300. Optionally, the third swing arm 420 is sleeved on the exterior of the rotating shaft 120 and is rotatable about the rotating shaft 120. One of the third swing arm 420 and the frame connector 300 is provided with a fourth slide groove 340, and the other is provided with a second slide rail, which extends into the fourth slide groove 340 and slidably engages with the fourth slide groove 340.

[0063] The third swing arm 420 is provided with a third driving curved surface c, and the second moving member 520 is provided with a fourth driving curved surface d. The third driving curved surface c cooperates with the fourth driving curved surface d. When the third swing arm 420 rotates, the third driving curved surface c and the fourth driving curved surface d drive the second moving member 520 to move. The third swing arm 420 and the second moving member 520 are both located on the side of the elastic member 600 facing away from the second swing arm body 411, and the second moving member 520 is located between the elastic member 600 and the third swing arm 420. In this way, the moving direction of the first moving member 510 is opposite to the moving direction of the second moving member 520, and the first moving member 510 and the second moving member 520 respectively act on the two ends of the same elastic member 600.

[0064] Optionally, the third driving curved surface c and the fourth driving curved surface d each include a plurality of second concave surfaces and a plurality of second convex surfaces, and the second concave surfaces and the second convex surfaces are alternately distributed in the circumferential direction of the third swing arm 420 relative to the rotation axis of the base 100 .

[0065] With this embodiment, by adding the second movable member 520 and the third swing arm 420, the first movable member 510 and the second movable member 520 can simultaneously act on the same elastic member 600, thereby increasing the elastic deformation of the elastic member 600 and further enhancing the damping effect of the hinge mechanism. Furthermore, the first movable member 510 and the second movable member 520 do not need to act on different elastic members 600, which helps reduce the number of components in the hinge mechanism and simplify the structure of the hinge mechanism.

[0066] In an optional embodiment, the hinge mechanism further includes a fourth swing arm 430 and a third movable member 530, wherein the fourth swing arm 430 is rotatably connected to the base 100, and optionally, the fourth swing arm 430 is sleeved on the outside of the rotating shaft 120 so that the fourth swing arm 430 can rotate around the rotating shaft 120; furthermore, the fourth swing arm 430 is slidably connected to the frame connecting member 300, and optionally, one of the fourth swing arm 430 and the frame connecting member 300 is provided with a fifth slide groove 350, and the other is provided with a third slide rail, the third slide rail extends into the fifth slide groove 350, and the third slide rail is slidably matched with the fifth slide groove 350. The fourth swing arm 430 and the third movable member 530 are both located on a side of the third swing arm 420 facing away from the second swing arm 410, and the third movable member 530 is located between the third swing arm 420 and the fourth swing arm 430.

[0067] The fourth swing arm 430 is also provided with the fifth driving curved surface e, and the third moving member 530 is provided with the sixth driving curved surface f. The fifth driving curved surface e cooperates with the sixth driving curved surface f. When the fourth swing arm 430 rotates, the third moving member 530 is driven to move by the fifth driving curved surface e and the sixth driving curved surface f. Moreover, the third moving member 530 is provided with the seventh driving curved surface, and the fourth swing arm 430 is also provided with the eighth driving curved surface. The seventh driving curved surface cooperates with the eighth driving curved surface. When the third moving member 530 moves, the fourth swing arm 430 is driven to rotate by the seventh driving curved surface and the eighth driving curved surface. The moving direction of the third moving member 530 is identical with the moving direction of the first moving member 510.

[0068] Optionally, the fifth driving surface e, the sixth driving surface f, the seventh driving surface and the eighth driving surface each include multiple third concave surfaces and multiple third convex surfaces, and the third concave surfaces and the third convex surfaces are alternately distributed in the circumferential direction of the fourth swing arm 430 relative to the rotation axis of the base 100.

[0069] When adopting this embodiment, the third swing arm 420, the third movable part 530 and the fourth swing arm 430 cooperate in sequence. When the third swing arm 420 acts on the third movable part 530, the third movable part 530 moves and drives the fourth swing arm 430 to rotate. Similarly, when the fourth swing arm 430 acts on the third movable part 530, the third movable part 530 moves and drives the third swing arm 420 to rotate, which is conducive to the overall rotation of the frame connecting part 300 relative to the base 100, and is conducive to the smooth folding and unfolding of the hinge mechanism.

[0070] In an optional embodiment, the first rotational connection portion 220 is an arcuate protrusion, and the base 100 is provided with an arcuate groove 110. The arcuate protrusion extends into the arcuate groove 110, and the arcuate protrusion and the arcuate groove 110 are slidably engaged to enable the first swing arm 200 to rotate relative to the frame connector 300. Optionally, as shown in FIG10 , when the hinge mechanism is in the deployed state, the entire arcuate protrusion is located within the arcuate groove 110; during the process of switching the hinge mechanism from the deployed state to the folded state, the portion of the arcuate protrusion extending outside the arcuate groove 110 increases.

[0071] According to this embodiment, the arc-shaped protrusion and the arc-shaped groove 110 are used to realize the rotational connection between the first swing arm 200 and the base 100, and there is no need to set up a complex sleeve structure, thereby simplifying the connection structure between the first swing arm 200 and the base 100. Moreover, during the rotation of the first swing arm 200 relative to the base 100, the rotation angle of the first swing arm 200 relative to the base 100 is reduced, and the part of the arc-shaped protrusion extending outside the arc-shaped groove 110 is reduced. Then, the central angle corresponding to the part of the arc-shaped protrusion located in the arc-shaped groove 110 is increased, which is beneficial to increase the matching area between the first swing arm 200 and the base 100 and improve the stability of the first swing arm 200.

[0072] In an optional embodiment, as shown in Figures 1 and 8, the hinge mechanism further includes a pressure cover 700, which is disposed on the side of the first rotating connection portion 220 facing away from the base 100. The pressure cover 700 is connected to the base 100 and presses the first rotating connection portion 220 against the base 100. Optionally, the pressure cover 700 and the base 100 can be fixedly connected by screws or other threaded fasteners. Of course, the pressure cover 700 and the base 100 can also be fixedly connected by other means such as welding. Optionally, the first rotating connection portion 220 is an arc-shaped protrusion, and the base 100 is provided with an arc-shaped groove 110. Referring to Figure 4, the surface of the pressure cover 700 facing the arc-shaped protrusion is an arc surface, the outer surface of the arc-shaped protrusion contacts the groove wall surface of the arc-shaped groove 110, and the inner surface of the arc-shaped groove 110 contacts the arc surface of the pressure cover 700. The pressure cover 700 does not affect the relative sliding of the arc-shaped protrusion and the arc-shaped groove 110.

[0073] In this embodiment, the first pivoting connection portion 220 is pressed against the base 100 using the pressure cap 700, which helps improve the stability of the first swing arm 200 and prevents the first swing arm 200 from shaking relative to the base 100. Furthermore, in the embodiment where the first pivoting connection portion 220 and the base 100 are pivotally connected via the arc-shaped protrusion and the arc-shaped groove 110, the pressure cap 700 can close the notch corresponding to the arc-shaped groove 110, preventing the base 100 from breaking, thereby improving the rigidity and support performance of the hinge mechanism.

[0074] In an optional embodiment, as shown in FIG2 , the hinge mechanism further includes a support plate 800 , which is located on a side of the base 100 , connected to the frame connector 300 , and slidably connected to the first swing arm 200 . Optionally, when the hinge mechanism is in the deployed state, the support plate 800 and the base 100 are coplanar. With this embodiment, the support plate 800 can shield the first swing arm 200 and the frame connector 300 , preventing them from being directly exposed, thereby improving the hinge mechanism's appearance.

[0075] In an optional embodiment, a rotating shaft 120, a first swing arm 200, a second swing arm 410, a third swing arm 420, a fourth swing arm 430, a frame connector 300, and a support plate 800 are provided on both sides of the base 100. Moreover, the first movable member 510 is simultaneously coordinated with the two second swing arms 410, the second movable member 520 is simultaneously coordinated with the two third swing arms 420, and the third movable member 530 is simultaneously coordinated with the two third swing arms 420 and the two fourth swing arms 430. Among them, the first swing arm 200 is a virtual swing arm in the prior art, and the second swing arm 410, the third swing arm 420, and the fourth swing arm 430 are respectively synchronous swing arms in the prior art.

[0076] Based on the hinge mechanism disclosed in the present application, an embodiment of the present application further provides an electronic device, as shown in Figures 15 and 16, the electronic device includes a first device body 910, a second device body 920 and the hinge mechanism in the above embodiment, and the first device body 910 is connected to the second device body 920 via the hinge mechanism. During the relative rotation of the first device body 910 and the second device body 920, the electronic device switches between the unfolded state and the folded state. Optionally, a first swing arm 200 and a frame connector 300 are provided on both sides of the base 100, and the first device body 910 and the second device body 920 are respectively connected to the frame connector 300 located on both sides of the base 100. With such a configuration, the hinge mechanism of the electronic device can improve the stability of the first swing arm 200, which is beneficial to improving the folding reliability of the electronic device.

[0077] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A hinge mechanism, comprising a base, a first swing arm and a frame connecting member; wherein: The first swing arm comprises a first swing arm body, a first rotating connection part and a second rotating connection part, wherein the first rotating connection part and the second rotating connection part are arranged at two ends of the first swing arm body, the first rotating connection part is rotatably connected to the base, and the second rotating connection part is rotatably connected to the frame connecting member; The frame connecting piece is provided with a first slide groove, the first slide groove has a component along a first direction, the first direction is a direction perpendicular to the plane where the first swing arm body is located, the second rotating connecting part is a cylindrical structure, the second rotating connecting part is located in the first slide groove and movably cooperates with the first slide groove; during the rotation of the first swing arm relative to the base, the second rotating connecting part slides and rotates in the first slide groove.

2. The hinge mechanism according to claim 1, wherein: The first slide groove also has a component along a second direction, the second direction is perpendicular to the first direction, and the second direction is perpendicular to the direction where the axis of the second rotating connection part is located.

3. The hinge mechanism according to claim 1, wherein: The second rotation connection portion protrudes from the surface of the first swing arm body in a third direction, the third direction is perpendicular to the first direction, and the third direction is parallel to the direction where the axis of the second rotation connection portion is located.

4. The hinge mechanism according to claim 1, wherein: A difference between a groove width of the first sliding groove and a diameter of the second rotating connection portion is within a preset range.

5. The hinge mechanism according to claim 1, wherein: The frame connecting member is provided with a limiting protrusion, and the first swing arm is provided with a limiting groove, and the limiting protrusion and the limiting groove cooperate in limiting position in the direction in which the first sliding groove extends.

6. The hinge mechanism according to claim 5, wherein: The number of the second rotating connection parts and the first sliding grooves is at least two, and the second rotating connection parts correspond to the first sliding grooves one by one, wherein two of the second rotating connection parts are arranged opposite to each other in the direction where the axis of the second rotating connection part is located, and the two first sliding grooves corresponding to the two second rotating connection parts are arranged opposite to each other.

7. The hinge mechanism according to claim 6, wherein: The limiting protrusion is located between two first sliding grooves arranged opposite to each other, and the limiting groove is located between two second rotating connecting parts arranged opposite to each other.

8. The hinge mechanism according to claim 1, wherein: The hinge mechanism also includes a second swing arm, which includes a second swing arm body, a third rotating connection part and a fourth rotating connection part, wherein the third rotating connection part and the fourth rotating connection part are arranged at two ends of the second swing arm body, the third rotating connection part is rotatably connected to the base, the second swing arm body is slidably connected to the frame connecting piece, and the fourth rotating connection part is movably connected to the first swing arm body. The first swing arm body is provided with a second slide groove, the second slide groove has components along the first direction and the second direction, the second direction is perpendicular to the first direction, and the second direction is perpendicular to the direction of the axis of the second rotating connection part, the fourth rotating connection part is a cylindrical structure, the fourth rotating connection part is located in the second slide groove and movably cooperates with the second slide groove; when the second swing arm rotates relative to the base, the fourth rotating connection part slides and rotates in the second slide groove.

9. The hinge mechanism according to claim 8, wherein: One of the frame connecting member and the second swing arm body is provided with a third slide groove, and the other is provided with a first slide rail, the first slide rail extends into the third slide groove, and the first slide rail is slidably matched with the third slide groove.

10. The hinge mechanism according to claim 1, wherein: The first rotating connection part is an arc-shaped protrusion, the base is provided with an arc-shaped groove, the arc-shaped protrusion extends into the arc-shaped groove, and the arc-shaped protrusion and the arc-shaped groove are slidably matched.

11. The hinge mechanism according to claim 1, wherein: The hinge mechanism further comprises a pressure cover, which is arranged on a side of the first rotating connection portion facing away from the base, and is connected to the base.

12. An electronic device, comprising a first device body, a second device body and the hinge mechanism according to any one of claims 1 to 11, wherein the first device body is connected to the second device body through the hinge mechanism; During the relative rotation of the first device body and the second device body, the electronic device switches between an unfolded state and a folded state.

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