Hinge mechanism and electronic device

Abstract

A hinge mechanism and an electronic device, relating to the technical field of electronic products. The hinge mechanism comprises: a hinge support (10), a swing arm assembly (20), a first sliding block (30), and rotating shafts (40), wherein the rotating shafts are arranged on the hinge support, the first sliding block and the swing arm assembly are both sleeved on the rotating shafts, one end of the swing arm assembly is connected to the first sliding block, and the other end of the swing arm assembly is connected to the hinge support; the swing arm assembly is provided with a first cam spiral surface (21) and a second cam spiral surface (22), a third cam spiral surface (31) is arranged on the first sliding block, the third cam spiral surface is rotatably fitted with the first cam spiral surface, a fourth cam spiral surface (11) is arranged on the hinge support, and the fourth cam spiral surface is rotatably fitted with the second cam spiral surface, so that the swing arm assembly can rotate relative to the rotating shafts and is switched between a folded state and an unfolded state. The hinge mechanism is simpler to assemble, and has higher structural reliability.

Description

Hinge mechanism and electronic equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application 202311829461.5, filed on December 28, 2023, entitled “Hinge Mechanism and Electronic Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the technical field of electronic products, and specifically relates to a hinge mechanism and an electronic device. Background Art

[0004] Currently, the two sides of foldable screen phones are typically connected and fixed using a hinge mechanism, which provides opening and closing damping force and hovering functions. However, during the design process, to ensure that the hinge mechanism has a large opening and closing damping force and a good hovering effect, multiple layers of friction plates are usually added to the hinge mechanism, and a magnetic adsorption structure is designed to increase the sliding friction between the friction plates. The design of friction plates and magnetic adsorption structures also increases the assembly process of the hinge mechanism.

[0005] It can be seen that the hinge mechanism in the related art has the problem of many assembly steps. Summary of the Invention

[0006] The present application aims to provide a hinge mechanism and an electronic device that can solve the problem of multiple assembly steps existing in hinge mechanisms in related technologies.

[0007] In order to solve the above technical problems, this application is implemented as follows:

[0008] In a first aspect, an embodiment of the present application provides a hinge mechanism, comprising: a hinge bracket, a swing arm assembly, a first slider, and a rotating shaft, wherein the rotating shaft is disposed on the hinge bracket, the first slider and the swing arm assembly are both sleeved on the rotating shaft, one end of the swing arm assembly is connected to the first slider, and the other end of the swing arm assembly is connected to the hinge bracket;

[0009] The swing arm assembly is provided with a first cam spiral surface and a second cam spiral surface, the first slider is provided with a third cam spiral surface, the third cam spiral surface is rotatably matched with the first cam spiral surface, and the hinge bracket is provided with a fourth cam spiral surface, the fourth cam spiral surface is rotatably matched with the second cam spiral surface, so that the swing arm assembly can rotate relative to the rotating shaft and switch between a folded state and an unfolded state.

[0010] In a second aspect, an embodiment of the present application provides an electronic device, comprising the hinge mechanism described in the first aspect.

[0011] In the embodiments of the present application, by setting the rotational connection of the swing arm assembly as the rotational cooperation of the first cam spiral surface and the third cam spiral surface and the rotational cooperation of the second cam spiral surface and the fourth cam spiral surface, the contact area of ​​the connection cooperation between the swing arm assembly and the first slider and the contact area of ​​the connection cooperation between the swing arm assembly and the hinge bracket are effectively increased, thereby increasing the rotational friction force required to be overcome for the rotation of the swing arm assembly, thereby ensuring the opening and closing damping force and hovering function of the hinge mechanism during the opening and closing process; moreover, the damping force and hovering function of the hinge mechanism in the present application are mainly provided by the spiral surface, that is, the assembly of the hinge mechanism in the present application only needs to ensure the cooperation of the spiral surface. Compared with the existing hinge mechanism that increases the rotational damping force by setting a magnetic adsorption structure and a friction plate, the hinge mechanism provided by the present application is simpler to assemble and has stronger structural reliability.

[0012] During the assembly process of the hinge mechanism in the present application, it is only necessary to ensure the rotational coordination of the first cam spiral surface and the third cam spiral surface and the rotational coordination of the second cam spiral surface and the fourth cam spiral surface to realize the assembly of the entire hinge mechanism. Compared with the hinge mechanism in the prior art, which not only needs to assemble the cam structure, but also needs to assemble the friction plate, magnetic adsorption structure, etc. in sequence, the hinge mechanism in the present application has fewer assembly steps, which improves the assembly efficiency of the hinge mechanism.

[0013] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] FIG1 is an exploded schematic diagram of a hinge mechanism provided in an embodiment of the present application;

[0016] FIG2 is a schematic diagram of the structure of a hinge mechanism according to an embodiment of the present application;

[0017] FIG3 is a second structural diagram of the hinge mechanism provided in an embodiment of the present application;

[0018] FIG4 is a schematic structural diagram of the hinge bracket shown in FIG1 ;

[0019] FIG5 is a schematic structural diagram of the swing arm shown in FIG1 ;

[0020] FIG6 is a schematic structural diagram of the first slider shown in FIG1 ;

[0021] FIG7 is a schematic structural diagram of the baffle shown in FIG1 ;

[0022] FIG8 is a schematic structural diagram of the rotating shaft shown in FIG1 ;

[0023] FIG9 is a schematic structural diagram of the second slider shown in FIG1 ;

[0024] FIG10 is a schematic diagram of the opening and closing of the hinge mechanism shown in FIG1;

[0025] FIG11 is an enlarged view of the circled area A in FIG10 ;

[0026] FIG12 is a second schematic diagram of the opening and closing of the hinge mechanism shown in FIG1 ;

[0027] FIG13 is an enlarged view of the circled area B in FIG12 ;

[0028] FIG14 is a third schematic diagram of the opening and closing of the hinge mechanism shown in FIG1 ;

[0029] FIG15 is an enlarged view of the circled area C in FIG14 ;

[0030] FIG16 is a fourth schematic diagram of the opening and closing of the hinge mechanism shown in FIG1 ;

[0031] FIG17 is an enlarged view of the circled area D in FIG16 . DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0036] The hinge mechanism provided in the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0037] Referring to Figures 1 to 17, Figure 1 is an exploded schematic diagram of a hinge mechanism provided in an embodiment of the present application; Figure 2 is one structural schematic diagram of a hinge mechanism provided in an embodiment of the present application; Figure 3 is a second structural schematic diagram of a hinge mechanism provided in an embodiment of the present application; Figure 4 is a structural schematic diagram of the hinge bracket shown in Figure 1; Figure 5 is a structural schematic diagram of the swing arm shown in Figure 1; Figure 6 is a structural schematic diagram of the first slider shown in Figure 1; Figure 7 is a structural schematic diagram of the baffle shown in Figure 1; Figure 8 is a structural schematic diagram of the rotating shaft shown in Figure 1; and Figure 9 is a structural schematic diagram of the hinge bracket shown in Figure 1. FIG10 is a structural schematic diagram of the second slider shown in FIG1 ; FIG11 is an enlarged view of the circled area A in FIG10 ; FIG12 is a second opening and closing schematic diagram of the hinge mechanism shown in FIG1 ; FIG13 is an enlarged view of the circled area B in FIG12 ; FIG14 is a third opening and closing schematic diagram of the hinge mechanism shown in FIG1 ; FIG15 is an enlarged view of the circled area C in FIG14 ; FIG16 is a fourth opening and closing schematic diagram of the hinge mechanism shown in FIG1 ; and FIG17 is an enlarged view of the circled area D in FIG16 .

[0038] As shown in Figures 1 to 17, an embodiment of the present application provides a hinge mechanism, including a hinge bracket 10, a swing arm assembly 20, a first slider 30 and a rotating shaft 40, the rotating shaft 40 is arranged on the hinge bracket 10, the first slider 30 and the swing arm assembly 20 are both mounted on the rotating shaft 40, one end of the swing arm assembly 20 is connected to the first slider 30, and the other end of the swing arm assembly 20 is connected to the hinge bracket 10.

[0039] The hinge bracket 10 can be understood as the base of the hinge mechanism. The swing arm assembly 20 and the first slider 30 can be assembled on the hinge bracket 10 through the rotating shaft 40 so that the swing arm assembly 20 can rotate around the hinge bracket 10.

[0040] When the hinge mechanism is applied to a folding terminal such as a folding mobile phone, the number of the rotating shafts 40 may be two, and the swing arm assembly 20 may include two swing arms 24, which may be respectively mounted on the two rotating shafts 40 so that the two swing arms 24 can rotate relative to the hinge bracket 10 through their respective corresponding rotating shafts; and the two swing arms 24 may also be connected to the two folding parts of the folding terminal so that the two folding parts of the folding terminal can rotate relative to the hinge bracket 10 following the two swing arms 24, thereby realizing the opening and closing process of the folding terminal and enabling the folding terminal to switch between the unfolded state and the folded state.

[0041] In one embodiment, the two swing arms 24 may be understood as the first swing arm and the second swing arm of the swing arm assembly 20 , and the first swing arm and the second swing arm may be mirror image components.

[0042] In one embodiment, the number of the rotating shafts 40 provided on the hinge bracket 10 is two, that is, the two rotating shafts 40 can be understood as a first rotating shaft and a second rotating shaft provided on the hinge bracket 10 .

[0043] In one embodiment, the first swing arm can be mounted on a first rotating shaft and can rotate relative to the hinge bracket 10 through the first rotating shaft; the second swing arm can be mounted on a second rotating shaft and can rotate relative to the hinge bracket 10 through the second rotating shaft.

[0044] The above-mentioned swing arm assembly 20 is provided with a first cam spiral surface 21 and a second cam spiral surface 22, and the first slider 30 is provided with a third cam spiral surface 31, and the third cam spiral surface 31 is rotatably matched with the first cam spiral surface 21. The hinge bracket 10 is provided with a fourth cam spiral surface 11, and the fourth cam spiral surface 11 is rotatably matched with the second cam spiral surface 22, so that the swing arm assembly 20 can rotate relative to the rotating shaft 40 and switch between a folded state and an unfolded state.

[0045] The above-mentioned folded state can be understood as the hinge mechanism being in a fully folded state, for example, the unfolding angle between the two swing arms 24 of the swing arm assembly 20 is 0 degrees, as shown in Figure 16; the above-mentioned unfolded state can be understood as the hinge mechanism being in a fully unfolded state, for example, the unfolding angle between the two swing arms 24 of the swing arm assembly 20 is 180°, as shown in Figure 10.

[0046] The first cam spiral surface 21 and the second cam spiral surface 22 can be understood as cam spiral surfaces provided on the rotating part of the swing arm assembly 20 .

[0047] Moreover, during the rotation of the swing arm assembly 20, the rotational friction force of the swing arm assembly 20 can be provided only by the rotational cooperation between the third cam spiral surface 31 and the first cam spiral surface 21 or the rotational cooperation between the fourth cam spiral surface 11 and the second cam spiral surface 22, or by the rotational cooperation between the third cam spiral surface 31 and the first cam spiral surface 21 and the rotational cooperation between the fourth cam spiral surface 11 and the second cam spiral surface 22 at the same time.

[0048] For example, when the hinge mechanism is in a fully extended state, the rotational friction force of the swing arm assembly 20 can be provided only by the rotational cooperation of the third cam spiral surface 31 and the first cam spiral surface 21, and at this time the third cam spiral surface 31 and the first cam spiral surface 21 are completely in contact with each other; when the hinge mechanism is in a fully folded state, the rotational friction force of the swing arm assembly 20 can be provided only by the rotational cooperation of the fourth cam spiral surface 11 and the second cam spiral surface 22, and at this time the fourth cam spiral surface 11 and the second cam spiral surface 22 are completely in contact with each other; the hinge mechanism is in the opening between the fully extended state and the fully folded state. When the third cam spiral surface 31 is in the engaged state, the rotational friction force of the swing arm assembly 20 can be provided simultaneously by the rotational cooperation between the third cam spiral surface 31 and the first cam spiral surface 21 and the rotational cooperation between the fourth cam spiral surface 11 and the second cam spiral surface 22. At this time, the third cam spiral surface 31 is partially fitted with the first cam spiral surface 21, and the fourth cam spiral surface 11 is also partially fitted with the second cam spiral surface 22. However, the sum of the fitting area between the third cam spiral surface 31 and the first cam spiral surface 21 and the fitting area between the fourth cam spiral surface 11 and the second cam spiral surface 22 is equal to the area of ​​the first cam spiral surface 21 or the second cam spiral surface 22.

[0049] In this embodiment, the connection between the swing arm assembly 20 and the first slider 30 is set to a rotational cooperation between the first cam spiral surface 21 and the third cam spiral surface 31, so that the relative rotation between the swing arm assembly 20 and the first slider 30 needs to overcome the rotational friction between the first cam spiral surface 21 and the third cam spiral surface 31; and because the connection between the swing arm assembly 20 and the first slider 30 is a rotational cooperation between the first cam spiral surface 21 and the third cam spiral surface 31, that is, the connection between the swing arm assembly 20 and the first slider 30 is a rotational cooperation between the two spiral surfaces, compared with the conventional cam connection scheme, the rotational cooperation between the two spiral surfaces effectively increases the contact area of ​​the connection between the swing arm assembly 20 and the first slider 30, thereby increasing the rotational friction that needs to be overcome for the relative rotation between the swing arm assembly 20 and the first slider 30.

[0050] Correspondingly, by setting the connection cooperation between the swing arm assembly 20 and the hinge bracket 10 as the rotation cooperation between the second cam spiral surface 22 and the fourth cam spiral surface 11, the relative rotation of the swing arm assembly 20 and the hinge bracket 10 needs to overcome the rotational friction between the second cam spiral surface 22 and the fourth cam spiral surface 11; and because the connection cooperation between the swing arm assembly 20 and the hinge bracket 10 is the rotation cooperation between the second cam spiral surface 22 and the fourth cam spiral surface 11, that is, the connection cooperation between the swing arm assembly 20 and the hinge bracket 10 is the rotation cooperation of two spiral surfaces, compared with the conventional cam connection scheme, the rotation cooperation of the two spiral surfaces effectively increases the contact area of ​​the connection cooperation between the swing arm assembly 20 and the hinge bracket 10, thereby increasing the rotational friction that needs to be overcome for the relative rotation of the swing arm assembly 20 and the hinge bracket 10.

[0051] In addition, since the connection between the swing arm assembly 20 and the first slider 30 and the hinge bracket 10 is a surface fit, during the rotation of the swing arm assembly 20, the first cam spiral surface 21, the second cam spiral surface 22, the third cam spiral surface 31 and the fourth cam spiral surface 11 are subjected to more uniform force and wear more evenly. Moreover, since the contact fitting surface between the spiral surfaces is larger, the wear of the spiral surfaces is also smaller, which not only improves the stability of the damping force of the hinge mechanism, improves the hovering experience of the hinge mechanism, but also extends the service life of the hinge mechanism.

[0052] In this way, by setting the rotational connection of the swing arm assembly 20 as the rotational cooperation of the first cam spiral surface 21 and the third cam spiral surface 31 and the rotational cooperation of the second cam spiral surface 22 and the fourth cam spiral surface 11, the contact area of ​​the connection cooperation between the swing arm assembly 20 and the first slider 30 and the contact area of ​​the connection cooperation between the swing arm assembly 20 and the hinge bracket 10 are effectively increased, thereby increasing the rotational friction force that needs to be overcome for the rotation of the swing arm assembly 20, thereby ensuring the opening and closing damping force and hovering function of the hinge mechanism during the opening and closing process; moreover, the damping force and hovering function of the hinge mechanism in the present application are mainly provided by the spiral surface, that is, the assembly of the hinge mechanism in the present application only needs to ensure the cooperation of the spiral surface. Compared with the existing hinge mechanism that increases the rotational damping force by setting a magnetic adsorption structure and a friction plate, the hinge mechanism provided by the present application is simpler to assemble and has stronger structural reliability.

[0053] During the assembly process of the hinge mechanism in the present application, it is only necessary to ensure the rotational coordination of the first cam spiral surface 21 and the third cam spiral surface 31, as well as the rotational coordination of the second cam spiral surface 22 and the fourth cam spiral surface 11, to realize the assembly of the entire hinge mechanism. Compared with the hinge mechanism in the prior art, which not only requires the cam structure to be assembled, but also requires the friction plate, magnetic adsorption structure, etc. to be assembled in sequence, the hinge mechanism in the present application has fewer assembly steps, thereby improving the assembly efficiency of the hinge mechanism.

[0054] In one embodiment, the sizes of the first cam spiral surface 21, the second cam spiral surface 22, the third cam spiral surface 31 and the fourth cam spiral surface 11 are the same or similar, so as to enhance the rotational cooperation effect between the first cam spiral surface 21 and the third cam spiral surface 31, and the rotational cooperation effect between the second cam spiral surface 22 and the fourth cam spiral surface 11.

[0055] During the rotation of the swing arm assembly 20, the sum of the contact areas of the first cam spiral surface 21 and the third cam spiral surface 31 and the contact areas of the second cam spiral surface 22 and the fourth cam spiral surface 11 is equal to or close to the area of ​​the first cam spiral surface 21 or the second cam spiral surface 22, so that during the rotation of the swing arm assembly 20, the contact area between the swing arm assembly 20 and the first slider 30 and the hinge bracket 10 can always be maintained within a relatively stable range, that is, the rotation of the swing arm assembly 20 always needs to overcome a relatively stable rotational friction force, that is, the setting of the cam spiral surface, so that the opening and closing process of the hinge mechanism can maintain a higher rotational damping force, which effectively improves the opening and closing feel of the hinge mechanism.

[0056] In one embodiment, there are two rotating shafts 40, and the two rotating shafts 40 are arranged side by side on the hinge bracket 10. The swing arm assembly 20 includes a second slider 23 and two swing arms 24. The two swing arms 24 are respectively mounted on the two rotating shafts 40. The two ends of the second slider 23 are respectively connected to the two swing arms 24, and the two swing arms 24 move synchronously through the second slider 23.

[0057] The swing arm 24 includes a swing arm body 241 and a first rotating portion 242 and a second rotating portion 243 disposed on the swing arm body 241. A gap 244 is defined between the first rotating portion 242 and the second rotating portion 243. The second slider 23 includes a third rotating portion 232 located within the gap 244. The first rotating portion 242, the third rotating portion 232, and the second rotating portion 243 are sleeved on the rotating shaft 40. The swing arm body 241 is rotatably connected relative to the rotating shaft 40 via the first rotating portion 242 and the second rotating portion 243.

[0058] A first cam helical surface 21 is provided on a side of the first rotating portion 242 facing away from the gap 244 , and a second cam helical surface 22 is provided on a side of the second rotating portion 243 facing away from the gap 244 .

[0059] The second slider 23 can be understood as a synchronous slider, which is used to achieve synchronous rotation of the two swing arms 24.

[0060] Because the two cam spiral surfaces on the swing arm 24 are each provided with a gap 244, and the first slider 30 is provided with a third cam spiral surface 31 that rotatably cooperates with the first cam spiral surface 21, and the hinge bracket 10 is provided with a fourth cam spiral surface 11 that rotatably cooperates with the second cam spiral surface 22, the two rotating portions of the swing arm 24 can be sandwiched between the first end of the hinge bracket 10 and the first slider 30 to achieve a rotational connection of the swing arm 24. The first end can be understood as the end of the hinge bracket 10 provided with the fourth cam spiral surface 11.

[0061] Moreover, since the rotational cooperation between the swing arm 24, the first slider 30 and the hinge bracket 10 is the rotational cooperation of the cam spiral surface, when one of the swing arms of the swing arm assembly 20 rotates around the rotating shaft 40, the swing arm 24 will produce a displacement in the direction of the axial center line of the rotating shaft 40, and due to the setting of the second slider 23, the displaced swing arm 24 will drive the other swing arm 24 in the swing arm assembly 20 to also produce a displacement trend through the second slider 23, and then drive the other swing arm 24 to rotate around its corresponding rotating shaft and produce the same displacement, thereby realizing the synchronous rotation of the two swing arms 24.

[0062] In this embodiment, since the synchronous movement provided by the second slider 23 and the rotational damping force generated by the hinge mechanism are both provided by the cam spiral surface, compared with the existing hinge mechanism that realizes the synchronous movement of the two swing arms through the synchronous structure and realizes the damping movement of the hinge mechanism through the friction plate, etc., the structure of the hinge mechanism can be effectively simplified, and at the same time, the assembly efficiency of the hinge mechanism can be improved, and the reliability of the structure can be improved.

[0063] The setting of the above-mentioned gap 244 can be understood as the third rotating part 232 of the second slider 23 being clamped between the two rotating parts of the swing arm 24, reducing the installation space required for the synchronous rotation of the two swing arms 24 along the direction of the axial center line of the rotating shaft 40, and improving the compactness of the overall structure of the hinge mechanism.

[0064] In one embodiment, the first rotating portion 242 includes a first rotating portion body 2421 and a first connecting portion 2422. The first connecting portion 2422 is disposed on a side of the first rotating portion body 2421 away from the gap 244 and extends in a direction away from the gap 244. The first connecting portion 2422 is provided with a first cam spiral surface 21 along the rotation direction of the first rotating portion 242.

[0065] The second rotating portion 243 includes a second rotating portion body 2431 and a second connecting portion 2432. The second connecting portion 2432 is disposed on a side of the second rotating portion body 2431 away from the gap 244 and extends in a direction away from the gap 244. The second connecting portion 2432 is provided with a second cam spiral surface 22 along the rotation direction of the second rotating portion 243.

[0066] The first slider 30 includes a first slider body 32 and a third connecting portion 33 disposed on the first slider body 32. The first slider body 32 is sleeved on the rotating shaft 40. The third connecting portion 33 extends along the rotating shaft 40 and has a third cam spiral surface 31 disposed on the third connecting portion 33.

[0067] The hinge bracket 10 includes a bracket body 12 and a fourth connecting portion 13 disposed on the bracket body 12 . The rotation shaft 40 is disposed on the bracket body 12 . The fourth connecting portion 13 extends along the rotation shaft 40 , and a fourth cam spiral surface 11 is disposed on the fourth connecting portion 13 .

[0068] The above-mentioned first cam spiral surface 21 and the above-mentioned second cam spiral surface 22 can be staggered in the circumferential direction of the rotating shaft 40, and the above-mentioned third cam spiral surface 31 and the fourth cam spiral surface 11 can also be staggered in the circumferential direction of the rotating shaft 40, so that the rotational coordination of the first cam spiral surface 21 and the third cam spiral surface 31, and the rotational coordination of the second cam spiral surface 22 and the fourth cam spiral surface 11 can enable the rotational connection of the swing arm 24 and the hinge bracket 10 and the first slider 30 to be connected together, thereby improving the stability of the rotational connection of the hinge mechanism.

[0069] In one embodiment, two first connecting parts 2422 can be provided on the first rotating part 242, and a corresponding first cam spiral surface 21 can be provided on each first connecting part 2422; two second connecting parts 2432 can be provided on the second rotating part 243, and a corresponding second cam spiral surface 22 can be provided on each second connecting part 2432; the above-mentioned third cam spiral surface 31 can also be provided on the first slider body 32, and the above-mentioned fourth cam spiral surface 11 can also be provided on the end of the bracket body 12 provided with the fourth connecting part 13, so that each rotating part has two sets of cam spiral surfaces that rotate with the corresponding first slider 30 or the cam spiral surface on the hinge bracket 10, further improving the rotational friction of the swing arm assembly 20, and improving the opening and closing damping effect and the hovering effect of the hinge mechanism; moreover, by providing two sets of cam spiral surfaces on each rotating part, the structural reliability of the hinge mechanism can be further improved.

[0070] In practical applications, the number of connecting parts on the first rotating part 242 and the second rotating part 243 can be designed based on actual needs, and there is no specific limitation on this.

[0071] In one embodiment, a first end surface 24221 is provided at one end of the first connecting portion 2422 facing away from the gap 244. The first end surface 24221 is parallel to the end surface of the first rotating portion body 2421 facing away from the gap 244. A second end surface 331 is provided on the third connecting portion 33. The second end surface 331 is limitedly engaged with the first end surface 24221.

[0072] A third end surface 24321 is provided at one end of the second connecting portion 2432 facing away from the gap 244. The third end surface 24321 is parallel to the end surface of the second rotating portion body 2431 facing away from the gap 244. A fourth end surface 131 is provided on the fourth connecting portion 13. The fourth end surface 131 is engaged with the third end surface 24321 in a limited manner.

[0073] When the hinge mechanism switches to the first opening and closing position, the connection between the first connecting portion 2422 and the third connecting portion 33 switches from the matching connection between the first cam spiral surface 21 and the third cam spiral surface 31 to the matching connection between the first end surface 24221 and the second end surface 331;

[0074] When the hinge mechanism switches to the second opening and closing position, the connection between the second connecting portion 2432 and the fourth connecting portion 13 switches from the matching connection between the second cam spiral surface 22 and the fourth cam spiral surface 11 to the matching connection between the third end surface 24321 and the fourth end surface 131 .

[0075] The above-mentioned first opening and closing position can be understood as the opening and closing angle of the hinge mechanism when the hinge mechanism is in a fully folded state, that is, the opening and closing position corresponding to the opening and closing angle of the hinge mechanism is 0 degrees; the above-mentioned second opening and closing position can be understood as the opening and closing angle of the hinge mechanism when the hinge mechanism is in a fully unfolded state, that is, the opening and closing position corresponding to the opening and closing angle of the hinge mechanism is 180 degrees.

[0076] In this embodiment, when the hinge mechanism switches to the first opening and closing position, the connection between the first connecting part 2422 and the third connecting part 33 is switched from the matching connection between the first cam spiral surface 21 and the third cam spiral surface 31 to the matching connection between the first end face 24221 and the second end face 331. Moreover, since the first cam spiral surface 21 and the first end face 24221 are located at different positions on the first connecting part 2422 and the third cam spiral surface 31 and the second end face 331 are located at different positions on the third connecting part 33, the connection between the first connecting part 2422 and the third connecting part 33 has a sudden change in spatial orientation, which makes the opening and closing operation of the hinge mechanism have an obvious gear sense, effectively improving the opening and closing feel of the hinge mechanism.

[0077] Accordingly, when the hinge mechanism switches to the second opening and closing position, the connection between the second connecting part 2432 and the fourth connecting part 13 is switched from the matching connection between the second cam spiral surface 22 and the fourth cam spiral surface 11 to the matching connection between the third end face 24321 and the fourth end face 131. Moreover, since the second cam spiral surface 22 and the third end face 24321 are located at different positions on the second connecting part 2432 and the fourth cam spiral surface 11 and the fourth end face 131 are located at different positions on the fourth connecting part 13, the connection between the second connecting part 2432 and the fourth connecting part 13 has a sudden change in spatial orientation, which makes the opening and closing operation of the hinge mechanism have an obvious gear sense, effectively improving the opening and closing feel of the hinge mechanism.

[0078] When the first opening and closing position corresponds to the fully folded state of the hinge mechanism, and the second opening and closing position corresponds to the fully extended state of the hinge mechanism, through such an arrangement, when the hinge mechanism moves to the fully extended state and the fully folded state, the hinge mechanism has a strong gear sense, and the gear sense can also remind the user that the hinge mechanism has entered the fully extended state or the fully folded state, avoiding the user from continuing the extension operation or the folding operation, reducing the damage to the hinge mechanism caused by the user's misoperation, and improving the opening and closing operation experience of the hinge mechanism.

[0079] In one embodiment, a first guide surface 24222 is provided at the connection between the first cam spiral surface 21 and the first end face 24221, and a second guide surface 332 is provided at the connection between the third cam spiral surface 31 and the second end face 331. Through the cooperation between the first guide surface 24222 and the second guide surface 332, the smoothness of the cooperation connection between the first connecting part 2422 and the third connecting part 33 can be increased, and the wear on the first cam spiral surface 21 and the third cam spiral surface 31 caused by the sudden change in the spatial orientation of the connection between the first connecting part 2422 and the third connecting part 33 is reduced.

[0080] In one embodiment, a third guide surface 24322 is provided at the connection between the second cam spiral surface 22 and the third end face 24321, and a fourth guide surface 132 is provided at the connection between the fourth cam spiral surface 11 and the fourth end face 131. Through the cooperation between the third guide surface 24322 and the fourth guide surface 132, the smoothness of the cooperation connection between the second connecting part 2432 and the fourth connecting part 13 can be increased, and the wear on the second cam spiral surface 22 and the fourth cam spiral surface 11 caused by the sudden change in the spatial orientation of the connection between the second connecting part 2432 and the fourth connecting part 13 is reduced.

[0081] In one embodiment, the bracket body 12 includes a first end and a second end that are relatively arranged, the first end is a first spring of the bracket body 12 provided with a fourth connecting portion 13, and the second end is provided with a first receiving space 121, and the first slider body 32 is partially located in the first receiving space 121.

[0082] In this embodiment, a first receiving space 121 is provided at the second end of the bracket body 12 to accommodate the first slider body 32 , thereby reducing the installation space required for the first slider 30 and the overall volume of the hinge mechanism.

[0083] In one embodiment, a sliding groove may be provided on the first slider body 32 , and a sliding rail adapted to the sliding groove may be provided on the bracket body 12 . The cooperation between the sliding groove and the sliding rail can prevent the first slider body 32 from being offset during the sliding process.

[0084] In one embodiment, the slide rail may be located in the first receiving space 121 .

[0085] In one embodiment, the hinge mechanism also includes an elastic member 50 and a baffle 60, the baffle 60 is fixed to the second end of the rotating shaft 40, the elastic member 50 is sleeved on the first end of the rotating shaft 40, the end of the bracket body 12 provided with the fourth connecting portion 13, the second rotating portion 243, the first rotating portion 242 and the first slider body 32 are all sleeved on the rotating shaft 40 and located between the elastic member 50 and the baffle 60, and the baffle 60 is in contact with the first slider body 32, one end of the elastic member 50 is connected to the end of the bracket body 12 provided with the fourth connecting portion 13, and is used to apply an elastic force in a first direction to the first slider body 32, and the first direction is the direction from the second end of the rotating shaft 40 to the first end of the rotating shaft.

[0086] In this embodiment, by providing the elastic member 50 and utilizing the elastic member 50 to apply an elastic force in a first direction to the first slider body 32, the gap between the first cam spiral surface 21 and the third cam spiral surface 31 can be eliminated, and the first cam spiral surface 21 and the third cam spiral surface 31 can be better pressed and fitted; and the gap between the second cam spiral surface 22 and the fourth cam spiral surface 11 can be eliminated, and the second cam spiral surface 22 and the fourth cam spiral surface 11 can be better pressed and fitted, so that the accuracy of the synchronous movement of the hinge mechanism is higher.

[0087] Moreover, the provision of the elastic member 50 can further increase the contact friction between the first cam spiral surface 21 and the third cam spiral surface 31, as well as the contact friction between the second cam spiral surface 22 and the fourth cam spiral surface 11, so that the swing arm 24 can hover at any position, further improving the rotational damping force and hovering effect of the hinge mechanism.

[0088] In addition, the provision of the baffle 60 can allow the elastic force of the elastic member 50 to always be maintained at a relatively high level, thereby improving the hovering effect of the hinge mechanism.

[0089] In one embodiment, the baffle 60 includes a baffle body 61 and a clamping portion 62 provided on the baffle body 61 , and the baffle body 61 abuts against the first slider body 32 ;

[0090] A slot 41 adapted to the clamping portion 62 is provided on the rotating shaft 40 , and the clamping portion 62 is inserted into the slot 41 .

[0091] In this embodiment, the baffle 60 is fixed on the rotating shaft 40 through the cooperation of the clamping portion 62 and the clamping slot 41, so that the baffle 60 can be used to limit the first slider body 32, and the elastic force of the elastic member 50 can always be maintained at a large level, thereby achieving the purpose of improving the hovering effect of the hinge mechanism.

[0092] In one embodiment, two clamping portions 62 may be provided on the baffle 60 so that the baffle 60 can be clamped and fixed to the two rotating shafts 40 provided on the hinge bracket 10 at the same time.

[0093] In one embodiment, the first slider 30 also includes a stopper 34 arranged on the first slider body 32. The stopper 34 partially extends out of the first slider body 32 and abuts against the end of the baffle body 61 away from the rotating shaft 40 to prevent the baffle 60 from moving out of the rotating shaft 40, thereby improving the reliability of the hinge mechanism.

[0094] In one embodiment, the second slider 23 further includes a second slider body 231 , and the third rotating portion 232 is disposed on the second slider body 231 ;

[0095] A second receiving space 122 is provided on the bracket body 12 , and a portion of the second slider body 231 is located in the second receiving space 122 .

[0096] In this embodiment, a second receiving space 122 is provided at the second end of the bracket body 12 to accommodate the second slider body 231 , thereby reducing the installation space required for the second slider 23 and the overall volume of the hinge mechanism.

[0097] In one embodiment, the first receiving space 121 and the second receiving space 122 are respectively arranged on the two back sides of the bracket body 12, and the first receiving space 121 and the second receiving space 122 are staggered on the bracket body 12. Through such an arrangement, the first slider body 32 and the second slider body 231 can be avoided from being stacked in the thickness direction of the bracket body 12, thereby reducing the stacking height of the hinge mechanism in the thickness direction of the bracket body 12, and effectively reducing the overall volume of the hinge mechanism, so that the hinge mechanism can be applied to more models of electronic devices, thereby improving the compatibility of the hinge mechanism.

[0098] An embodiment of the present application also provides an electronic device, comprising the above-mentioned hinge mechanism.

[0099] It should be noted that the implementation method of the above-mentioned hinge mechanism embodiment is also applicable to the embodiment of the electronic device and can achieve the same technical effect, which will not be described in detail here.

[0100] The electronic device may be a mobile phone, a notebook computer, or a PDA.

[0101] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0102] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A hinge mechanism, comprising: A hinge bracket, a swing arm assembly, a first slider and a rotating shaft. The rotating shaft is arranged on the hinge bracket. The first slider and the swing arm assembly are both sleeved on the rotating shaft. One end of the swing arm assembly is connected to the first slider, and the other end of the swing arm assembly is connected to the hinge bracket; The swing arm assembly is provided with a first cam spiral surface and a second cam spiral surface. The first slider is provided with a third cam spiral surface. The third cam spiral surface is in rotational cooperation with the first cam spiral surface. The hinge bracket is provided with a fourth cam spiral surface. The fourth cam spiral surface is in rotational cooperation with the second cam spiral surface, so that the swing arm assembly can rotate relative to the rotating shaft and switch between a folded state and an unfolded state.

2. The hinge mechanism according to claim 1, wherein, The number of the rotating shafts is two, and the two rotating shafts are arranged in parallel on the hinge bracket. The swing arm assembly includes a second slider and two swing arms. The two swing arms are respectively sleeved on the two rotating shafts. Two ends of the second slider are respectively connected to the two swing arms, and the two swing arms move synchronously through the second slider; The swing arm includes a swing arm body and a first rotating part and a second rotating part arranged on the swing arm body. There is a gap between the first rotating part and the second rotating part. The second slider includes a third rotating part located in the gap. The first rotating part, the third rotating part and the second rotating part are sleeved on the rotating shaft, and the swing arm body is rotationally connected to the rotating shaft through the first rotating part and the second rotating part; The first cam spiral surface is arranged on a side of the first rotating part away from the gap, and the second cam spiral surface is arranged on a side of the second rotating part away from the gap.

3. The hinge mechanism according to claim 2, wherein, The first rotating part includes a first rotating part body and a first connecting part. The first connecting part is arranged on a side of the first rotating part body away from the gap and extends in a direction away from the gap. The first cam spiral surface is arranged on the first connecting part along the rotation direction of the first rotating part; The second rotating part includes a second rotating part body and a second connecting part. The second connecting part is arranged on a side of the second rotating part body away from the gap and extends in a direction away from the gap. The second cam spiral surface is arranged on the second connecting part along the rotation direction of the second rotating part; The first slider includes a first slider body and a third connecting part arranged on the first slider body. The first slider body is sleeved on the rotating shaft. The third connecting part extends along the rotating shaft, and the third cam spiral surface is arranged on the third connecting part; The hinge bracket includes a bracket body and a fourth connecting part arranged on the bracket body. The rotating shaft is arranged on the bracket body. The fourth connecting part extends along the rotating shaft, and the fourth cam spiral surface is arranged on the fourth connecting part.

4. The hinge mechanism according to claim 3, wherein, One end of the first connecting portion facing away from the gap is provided with a first end face, the first end face is parallel to the end face of the first rotating portion body facing away from the gap, the third connecting portion has a second end face, and the second end face is in limit fit with the first end face; One end of the second connecting portion facing away from the gap is provided with a third end face, the third end face is parallel to the end face of the second rotating portion body facing away from the gap, the fourth connecting portion has a fourth end face, and the fourth end face is in limit fit with the third end face; When the hinge mechanism is switched to the first opening / closing position, the connection between the first connecting portion and the third connecting portion is switched from the mating connection of the first cam spiral surface and the third cam spiral surface to the mating connection of the first end face and the second end face; When the hinge mechanism is switched to the second opening / closing position, the connection between the second connecting portion and the fourth connecting portion is switched from the mating connection of the second cam spiral surface and the fourth cam spiral surface to the mating connection of the third end face and the fourth end face.

5. The hinge mechanism according to claim 4, wherein, A first guiding surface is provided at the connection between the first cam spiral surface and the first end face, a second guiding surface is provided at the connection between the third cam spiral surface and the second end face, and through the cooperation of the first guiding surface and the second guiding surface, the smoothness of the mating connection between the first connecting portion and the third connecting portion is increased; A third guiding surface is provided at the connection between the second cam spiral surface and the third end face, a fourth guiding surface is provided at the connection between the fourth cam spiral surface and the fourth end face, and through the cooperation of the third guiding surface and the fourth guiding surface, the smoothness of the mating connection between the second connecting portion and the fourth connecting portion is increased.

6. The hinge mechanism according to claim 3, wherein, The bracket body includes a first end and a second end arranged oppositely, the first end is the end of the bracket body where the fourth connecting portion is provided, and the second end is provided with a first receiving space, and a part of the first slider body is located in the first receiving space.

7. The hinge mechanism according to claim 3, wherein, The hinge mechanism further includes an elastic member and a baffle, the baffle is fixedly arranged at the second end of the rotating shaft, the elastic member is sleeved on the first end of the rotating shaft, the end of the bracket body where the fourth connecting portion is provided, the second rotating portion, the first rotating portion and the first slider body are all sleeved on the rotating shaft and located between the elastic member and the baffle, and the baffle abuts against the first slider body, the elastic member is used to apply an elastic acting force in a first direction to the first slider body, and the first direction is the direction from the second end of the rotating shaft to the first end of the rotating shaft.

8. The hinge mechanism according to claim 7, wherein, The baffle includes a baffle body and a clamping portion arranged on the baffle body, and the baffle body abuts against the first slider body; A clamping groove adapted to the clamping portion is provided on the rotating shaft, and the clamping portion is inserted into the clamping groove.

9. The hinge mechanism according to claim 6, wherein, The second slider further includes a second slider body, and the third rotating portion is arranged on the second slider body; A second receiving space is provided on the bracket body, and a part of the second slider body is located in the second receiving space.

10. The hinge mechanism according to claim 9, wherein, The first receiving space and the second receiving space are respectively arranged on two opposite sides of the bracket body, and the first receiving space and the second receiving space are arranged in a staggered manner on the bracket body.

11. An electronic device, comprising the hinge mechanism according to any one of claims 1 to 10.

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