Hinge mechanism and electronic device

Abstract

The invention discloses a hinge mechanism and electronic equipment, and belongs to the technical field of electronic products. The hinge mechanism comprises a hinge support, a swing arm assembly, a first sliding block and a rotating shaft, the rotating shaft is arranged on the hinge support, the rotating shaft is sleeved with the first sliding block and the swing arm assembly, one end of the swing arm assembly is connected with the first sliding block, and the other end of the swing arm assembly is connected with the hinge support; the swing arm assembly is provided with a first cam helical surface and a second cam helical surface, the first sliding block is provided with a third cam helical surface, the third cam helical surface is in running fit with the first cam helical surface, the hinge support is provided with a fourth cam helical surface, and the fourth cam helical surface is in running fit with the second cam helical surface. And the fourth cam helical surface is in running fit with the second cam helical surface, so that the swing arm assembly can rotate relative to the rotating shaft and can be switched between a folded state and an unfolded state.

Description

Technical Field

[0001] This application belongs to the technical field of electronic products, and particularly relates to a hinge mechanism and an electronic device. Background Art

[0002] Currently, the two sides of the body of a folding screen mobile phone are usually connected and fixed by a hinge mechanism, and the hinge mechanism can provide an opening and closing damping force and a hovering function for the folding screen mobile phone. However, in the design process, to ensure that the hinge mechanism can have 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 force between the friction plates. The design of the friction plates and the magnetic adsorption structure will increase the assembly process of the hinge mechanism.

[0003] It can be seen that the hinge mechanism in the related art has the problem of many assembly processes. Summary of the Invention

[0004] This application aims to provide a hinge mechanism and an electronic device, which can solve the problem of many assembly processes existing in the hinge mechanism in the related art.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of this application provides a hinge mechanism, including: 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;

[0007] 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 rotationally matched with the first cam spiral surface. The hinge bracket is provided with a fourth cam spiral surface. The fourth cam spiral surface is rotationally 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.

[0008] In a second aspect, an embodiment of this application provides an electronic device, including the hinge mechanism described in the first aspect.

[0009] In an embodiment of the present application, by setting the rotational connection of the swing arm assembly as the rotational cooperation between the first cam spiral surface and the third cam spiral surface and the rotational cooperation between the second cam spiral surface and the fourth cam spiral surface, the contact area of the connection between the swing arm assembly and the first slider and the contact area of the connection between the swing arm assembly and the hinge bracket are effectively increased. Furthermore, the rotational frictional force that needs to be overcome during the rotation of the swing arm assembly is increased, ensuring the opening and closing damping force and the hovering function during the opening and closing process of the hinge mechanism. Moreover, the damping force and the 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 friction plates, the assembly of the hinge mechanism provided in the present application is simpler, and the reliability of the structure is also stronger.

[0010] During the assembly process of the hinge mechanism in the present application, only by ensuring the rotational cooperation between the first cam spiral surface and the third cam spiral surface and the rotational cooperation between the second cam spiral surface and the fourth cam spiral surface, the assembly of the entire hinge mechanism can be achieved. Compared with the prior art where the hinge mechanism not only needs to assemble the cam structure but also needs to assemble the friction plate, the magnetic adsorption structure, etc. in sequence, the assembly process of the hinge mechanism in the present application has fewer steps, improving the assembly efficiency of the hinge mechanism.

[0011] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0013] Figure 1 is an exploded schematic view of the hinge mechanism provided by an embodiment of the present application;

[0014] Figure 2 is one of the schematic structural views of the hinge mechanism provided by an embodiment of the present application;

[0015] Figure 3 is another schematic structural view of the hinge mechanism provided by an embodiment of the present application;

[0016] Figure 4 is Figure 1 the schematic structural view of the hinge bracket shown in;

[0017] Figure 5 is Figure 1 the schematic structural view of the swing arm shown in;

[0018] Figure 6 is Figure 1Schematic structural diagram of the first slider shown;

[0019] Figure 7 is Figure 1 Schematic structural diagram of the baffle shown;

[0020] Figure 8 is Figure 1 Schematic structural diagram of the rotating shaft shown;

[0021] Figure 9 is Figure 1 Schematic structural diagram of the second slider shown;

[0022] Figure 10 is Figure 1 One of the opening and closing diagrams of the hinge mechanism shown;

[0023] Figure 11 is Figure 10 Enlarged view of the A area circled in;

[0024] Figure 12 is Figure 1 Two of the opening and closing diagrams of the hinge mechanism shown;

[0025] Figure 13 is Figure 12 Enlarged view of the B area circled in;

[0026] Figure 14 is Figure 1 Three of the opening and closing diagrams of the hinge mechanism shown;

[0027] Figure 15 is Figure 14 Enlarged view of the C area circled in;

[0028] Figure 16 is Figure 1 Four of the opening and closing diagrams of the hinge mechanism shown;

[0029] Figure 17 is Figure 16 Enlarged view of the D area circled in. Specific implementation mode

[0030] Hereinafter, embodiments of the present application will be described in detail. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application and should not be construed as limiting the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.

[0031] The terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0032] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying 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 construed as a limitation of this application.

[0033] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0034] The hinge mechanism provided by the embodiments of this application will be described in detail below with reference to the drawings and through specific embodiments and their application scenarios.

[0035] See Figures 1 to 17 , Figure 1 which is an exploded view of the hinge mechanism provided by the embodiments of this application; Figure 2 which is one of the structural diagrams of the hinge mechanism provided by the embodiments of this application; Figure 3 which is another structural diagram of the hinge mechanism provided by the embodiments of this application; Figure 4 is Figure 1 the structural diagram of the hinge bracket shown in Figure 5 is Figure 1 the structural diagram of the swing arm shown in Figure 6 is Figure 1 the structural diagram of the first slider shown in Figure 7 is Figure 1 the structural diagram of the baffle shown in Figure 8 is Figure 1 the structural diagram of the rotating shaft shown inFigure 9 is Figure 1 a schematic structural view of the second slider shown; Figure 10 is Figure 1 one of the opening and closing schematic views of the hinge mechanism shown; Figure 11 is Figure 10 an enlarged view of the circled area A in;

[0036] Figure 12 is Figure 1 another opening and closing schematic view of the hinge mechanism shown; Figure 13 is Figure 12 an enlarged view of the circled area B in; Figure 14 is Figure 1 a third opening and closing schematic view of the hinge mechanism shown; Figure 15 is Figure 14 an enlarged view of the circled area C in; Figure 16 is Figure 1 a fourth opening and closing schematic view of the hinge mechanism shown; Figure 17 is Figure 16 an enlarged view of the circled area D in.

[0037] As Figures 1 to 17 shown, 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 disposed on the hinge bracket 10. The first slider 30 and the swing arm assembly 20 are both sleeved 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.

[0038] The above-mentioned hinge bracket 10 can be understood as the base of the hinge mechanism. The swing arm assembly 20 and the first slider 30 can both 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.

[0039] When the above-mentioned hinge mechanism is applied to a folding terminal such as a folding mobile phone, the number of the above-mentioned rotating shafts 40 can be two, and the above-mentioned swing arm assembly 20 can include two swing arms 24. The two swing arms 24 can be respectively sleeved on the two rotating shafts 40, so that the two swing arms 24 can both rotate relative to the hinge bracket 10 through their respective corresponding rotating shafts; and the two swing arms 24 can also be connected to the two folding parts of the folding terminal, so that the two folding parts of the folding terminal can follow the two swing arms 24 to rotate relative to the hinge bracket 10, so as to realize the opening and closing process of the folding terminal and enable the folding terminal to switch between the unfolded state and the folded state.

[0040] In one embodiment, the above-mentioned two swing arms 24 can 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 can be mirror components.

[0041] In one embodiment, the number of the rotating shafts 40 arranged on the hinge bracket 10 is two, that is, the above two rotating shafts 40 can be understood as the first rotating shaft and the second rotating shaft arranged on the hinge bracket 10.

[0042] In one embodiment, the above first swing arm can be sleeved on the first rotating shaft and can rotate relative to the hinge bracket 10 through the first rotating shaft; the above second swing arm can be sleeved on the second rotating shaft and can rotate relative to the hinge bracket 10 through the second rotating shaft.

[0043] The swing arm assembly 20 is provided with a first cam spiral surface 21 and a second cam spiral surface 22, the first slider 30 is provided with a third cam spiral surface 31, the third cam spiral surface 31 is rotationally matched with the first cam spiral surface 21, and the hinge bracket 10 is provided with a fourth cam spiral surface 11, the fourth cam spiral surface 11 is rotationally 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.

[0044] The above 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 degree, specifically as Figure 16 shown; the above 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°, specifically as Figure 10 shown.

[0045] The above first cam spiral surface 21 and the above second cam spiral surface 22 can be understood as the cam spiral surfaces arranged on the rotating part of the swing arm assembly 20.

[0046] 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.

[0047] For example, when the hinge mechanism is in the fully extended state, the rotational friction force of the swing arm assembly 20 can be provided only by the rotational cooperation between the third cam helical surface 31 and the first cam helical surface 21, and at this time, the third cam helical surface 31 and the first cam helical surface 21 are completely attached together; when the hinge mechanism is in the fully folded state, the rotational friction force of the swing arm assembly 20 can be provided only by the rotational cooperation between the fourth cam helical surface 11 and the second cam helical surface 22, and at this time, the fourth cam helical surface 11 and the second cam helical surface 22 are completely attached together; when the hinge mechanism is in the opening and closing state between the fully extended state and the fully folded state, the rotational friction force of the swing arm assembly 20 can be provided simultaneously by the rotational cooperation between the third cam helical surface 31 and the first cam helical surface 21 and the rotational cooperation between the fourth cam helical surface 11 and the second cam helical surface 22. At this time, the third cam helical surface 31 and the first cam helical surface 21 are partially attached, and the fourth cam helical surface 11 and the second cam helical surface 22 are also partially attached, but the sum of the attachment areas of the third cam helical surface 31 and the first cam helical surface 21 and the fourth cam helical surface 11 and the second cam helical surface 22 is equal to the area of the first cam helical surface 21 or the second cam helical surface 22.

[0048] In this embodiment, by setting the connection and cooperation between the swing arm assembly 20 and the first slider 30 as the rotational cooperation between the first cam helical surface 21 and the third cam helical surface 31, the relative rotation between the swing arm assembly 20 and the first slider 30 needs to overcome the rotational friction force between the first cam helical surface 21 and the third cam helical surface 31; and because the connection and cooperation between the swing arm assembly 20 and the first slider 30 is the rotational cooperation between the first cam helical surface 21 and the third cam helical surface 31, that is, the connection and cooperation between the swing arm assembly 20 and the first slider 30 is the rotational cooperation of two helical surfaces. Compared with the conventional cam connection scheme, the rotational cooperation of the two helical surfaces effectively increases the contact area of the connection and cooperation between the swing arm assembly 20 and the first slider 30, and further increases the rotational friction force required for the relative rotation between the swing arm assembly 20 and the first slider 30.

[0049] Accordingly, by setting the connection and cooperation between the swing arm assembly 20 and the hinge bracket 10 as the rotational cooperation between the second cam spiral surface 22 and the fourth cam spiral surface 11, the relative rotation between the swing arm assembly 20 and the hinge bracket 10 needs to overcome the rotational friction force between the second cam spiral surface 22 and the fourth cam spiral surface 11; and since the connection and cooperation between the swing arm assembly 20 and the hinge bracket 10 is the rotational cooperation of the second cam spiral surface 22 and the fourth cam spiral surface 11, that is, the connection and cooperation between the swing arm assembly 20 and the hinge bracket 10 is the rotational cooperation of two spiral surfaces. Compared with the conventional cam connection scheme, the rotational cooperation of the two spiral surfaces effectively increases the contact area of the connection and cooperation between the swing arm assembly 20 and the hinge bracket 10, thereby increasing the rotational friction force that needs to be overcome for the relative rotation between the swing arm assembly 20 and the hinge bracket 10.

[0050] In addition, since the connection and cooperation between the swing arm assembly 20, the first slider 30 and the hinge bracket 10 is surface cooperation, during the rotation of the swing arm assembly 20, the forces on 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 more uniform, and the wear is also more uniform. And because the contact mating surface between the spiral surfaces is larger, the wear amount of the spiral surfaces is smaller, which not only improves the stability of the damping force of the hinge mechanism and the hovering experience of the hinge mechanism, but also can extend the service life of the hinge mechanism.

[0051] In this way, by setting the rotational connection of the swing arm assembly 20 as the rotational cooperation between the first cam spiral surface 21 and the third cam spiral surface 31 and the rotational cooperation between the second cam spiral surface 22 and the fourth cam spiral surface 11, the contact area of the connection and cooperation between the swing arm assembly 20 and the first slider 30 and the contact area of the connection and 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, ensuring the opening and closing damping force and the hovering function during the opening and closing process of the hinge mechanism; moreover, the damping force and the hovering function of the hinge mechanism in this application are mainly provided by the spiral surfaces, that is, the assembly of the hinge mechanism in this application only needs to ensure the cooperation of the spiral surfaces. Compared with the existing hinge mechanism that increases the rotational damping force by setting a magnetic adsorption structure and friction plates, the assembly of the hinge mechanism provided in this application is simpler, and the reliability of the structure is also stronger.

[0052] During the assembly process of the hinge mechanism in this application, only by ensuring the rotational cooperation between the first cam spiral surface 21 and the third cam spiral surface 31 and the rotational cooperation between the second cam spiral surface 22 and the fourth cam spiral surface 11, the assembly of the entire hinge mechanism can be achieved. Compared with the prior art where the hinge mechanism not only needs to assemble the cam structure, but also needs to assemble the friction plates, magnetic adsorption structures, etc. in sequence, the assembly process of the hinge mechanism in this application has fewer steps, improving the assembly efficiency of the hinge mechanism.

[0053] In one embodiment, the dimensions 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 to improve the rotational mating effect between the first cam spiral surface 21 and the third cam spiral surface 31, and the rotational mating effect between the second cam spiral surface 22 and the fourth cam spiral surface 11.

[0054] 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 similar to the area of the first cam spiral surface 21 or the second cam spiral surface 22. This enables the contact area between the swing arm assembly 20 and the first slider 30 and the hinge bracket 10 to always be maintained within a relatively stable range during the rotation of the swing arm assembly 20. That is, during the rotation of the swing arm assembly 20, a relatively stable rotational frictional force always needs to be overcome. That is, the setting of the cam spiral surface enables a relatively high rotational damping force to be maintained during the opening and closing processes of the hinge mechanism, effectively improving the feel of opening and closing the hinge mechanism.

[0055] In one embodiment, the number of the rotating shafts 40 is two, and the two rotating shafts 40 are arranged in parallel 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 sleeved 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.

[0056] The swing arm 24 includes a swing arm body 241, a first rotating portion 242, and a second rotating portion 243 provided on the swing arm body 241. There is a gap 244 between the first rotating portion 242 and the second rotating portion 243. The second slider 23 includes a third rotating portion 232 located in 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, and the swing arm body 241 is rotatably connected to the rotating shaft 40 through the first rotating portion 242 and the second rotating portion 243.

[0057] A first cam spiral surface 21 is provided on one side of the first rotating portion 242 facing away from the gap 244, and a second cam spiral surface 22 is provided on one side of the second rotating portion 243 facing away from the gap 244.

[0058] The second slider 23 can be understood as a synchronous slider for realizing the synchronous rotation of the two swing arms 24.

[0059] Since the two cam spiral surfaces on the swing arm 24 are respectively provided with the gap 244, and the first slider 30 is provided with the third cam spiral surface 31 that rotates with the first cam spiral surface 21, and the hinge bracket 10 is provided with the fourth cam spiral surface 11 that rotates with the second cam spiral surface 22, the two rotating parts of the swing arm 24 can be clamped between the first end of the hinge bracket 10 and the first slider 30 to realize the rotation connection of the swing arm 24. Among them, the first end can be understood as the end of the hinge bracket 10 provided with the fourth cam spiral surface 11.

[0060] 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 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 will drive the other swing arm in the swing arm assembly 20 to also produce a displacement trend through the second slider 23, and then drive the other swing arm to rotate around its corresponding rotating shaft and produce the same displacement, thereby realizing the synchronous rotation of the two swing arms 24.

[0061] In the present 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.

[0062] The setting of the above-mentioned gap 244 can be understood as the third rotating part 232 of the second slider 23 is clamped between the two rotating parts of the swing arm 24, which reduces 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 improves the compactness of the overall structure of the hinge mechanism.

[0063] 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 in a rotation direction of the first rotating portion 242.

[0064] The second rotating part 243 includes a second rotating part body 2431 and a second connecting part 2432. The second connecting part 2432 is disposed on a side of the second rotating part body 2431 away from the gap 244 and extends in a direction away from the gap 244. The second connecting part 2432 is provided with a second cam spiral surface 22 in the rotating direction of the second rotating part 243.

[0065] The first slider 30 includes a first slider body 32 and a third connecting portion 33 provided 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 a third cam spiral surface 31 is provided on the third connecting portion 33;

[0066] The hinge bracket 10 includes a bracket body 12 and a fourth connecting portion 13 provided on the bracket body 12. The rotating shaft 40 is provided on the bracket body 12. The fourth connecting portion 13 extends along the rotating shaft 40, and a fourth cam spiral surface 11 is provided on the fourth connecting portion 13.

[0067] The above-mentioned first cam spiral surface 21 and the above-mentioned second cam spiral surface 22 can be arranged in a circumferential dislocation on the rotating shaft 40, and the above-mentioned third cam spiral surface 31 and the fourth cam spiral surface 11 can also be arranged in a circumferential dislocation on the rotating shaft 40, so that the rotational cooperation between the first cam spiral surface 21 and the third cam spiral surface 31, and the rotational cooperation between the second cam spiral surface 22 and the fourth cam spiral surface 11 can enable the rotational connection between the swing arm 24, the hinge bracket 10 and the first slider 30 to be connected together, improving the stability of the rotational connection of the hinge mechanism.

[0068] In one embodiment, two first connecting portions 2422 can be provided on the first rotating portion 242, and a corresponding first cam spiral surface 21 can be provided on each first connecting portion 2422; two second connecting portions 2432 can be provided on the second rotating portion 243, and a corresponding second cam spiral surface 22 can be provided on each second connecting portion 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 at one end of the bracket body 12 where the fourth connecting portion 13 is provided, so that there are two sets of cam spiral surfaces on each rotating portion for rotational cooperation with the cam spiral surfaces on the corresponding first slider 30 or hinge bracket 10, further increasing the rotational friction of the swing arm assembly 20, 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 portion, the structural reliability of the hinge mechanism can be further improved.

[0069] In practical applications, based on actual requirements, the number of connecting portions on the first rotating portion 242 and the second rotating portion 243 can be designed, and no specific limitation is made thereto.

[0070] In one embodiment, a first end face 24221 is provided at one end of the first connecting portion 2422 away from the gap 244. The first end face 24221 is parallel to the end face of the first rotating portion body 2421 away from the gap 244. A second end face 331 is provided on the third connecting portion 33, and the second end face 331 is in limit cooperation with the first end face 24221;

[0071] One end of the second connecting portion 2432 facing away from the gap 244 is provided with a third end face 24321, the third end face 24321 is parallel to the end face of the second rotating portion body 2431 facing away from the gap 244, a fourth end face 131 is provided on the fourth connecting portion 13, and the fourth end face 131 is in limiting fit with the third end face 24321;

[0072] 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 is switched from the mating connection between the first cam spiral surface 21 and the third cam spiral surface 31 to the mating connection between the first end face 24221 and the second end face 331;

[0073] 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 is switched from the mating connection between the second cam spiral surface 22 and the fourth cam spiral surface 11 to the mating connection between the third end face 24321 and the fourth end face 131.

[0074] 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 the fully folded state, that is, the opening and closing position corresponding to the opening and closing angle of the hinge mechanism being 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 the fully unfolded state, that is, the opening and closing position corresponding to the opening and closing angle of the hinge mechanism being 180 degrees.

[0075] In this embodiment, 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 is switched from the mating connection between the first cam spiral surface 21 and the third cam spiral surface 31 to the mating connection between the first end face 24221 and the second end face 331. Moreover, due to the different orientations of the first cam spiral surface 21 and the first end face 24221 on the first connecting portion 2422 and the different orientations of the third cam spiral surface 31 and the second end face 331 on the third connecting portion 33, there is a sudden change in the spatial orientation of the connection between the first connecting portion 2422 and the third connecting portion 33, thereby making the opening and closing operation of the hinge mechanism have an obvious gear feeling, effectively improving the opening and closing feel of the hinge mechanism.

[0076] Accordingly, when the hinge mechanism switches to the second opening / closing position, the connection between the second connecting portion 2432 and the fourth connecting portion 13 is switched from the mating connection between the second cam spiral surface 22 and the fourth cam spiral surface 11 to the mating connection between the third end surface 24321 and the fourth end surface 131. Moreover, due to the different orientations of the second cam spiral surface 22 and the third end surface 24321 on the second connecting portion 2432 and the different orientations of the fourth cam spiral surface 11 and the fourth end surface 131 on the fourth connecting portion 13, there is a sudden change in the spatial orientation of the connection between the second connecting portion 2432 and the fourth connecting portion 13, thereby making the opening / closing operation of the hinge mechanism have an obvious gear feeling, effectively improving the opening / closing feel of the hinge mechanism.

[0077] In the case where the above first opening / closing position corresponds to the fully folded state of the hinge mechanism and the above second opening / closing position corresponds to the fully unfolded state of the hinge mechanism, by setting it in this way, when the hinge mechanism moves to the fully unfolded state and the fully folded state, the hinge mechanism has a strong gear feeling. This gear feeling can also remind the user that the hinge mechanism has entered the fully unfolded state or the fully folded state, avoiding the user from continuing the unfolding operation or the folding operation, reducing the damage to the hinge mechanism caused by the user's misoperation, and also improving the opening / closing operation experience of the hinge mechanism.

[0078] In one embodiment, a first guiding surface 24222 is provided at the connection between the first cam spiral surface 21 and the first end surface 24221, and a second guiding surface 332 is provided at the connection between the third cam spiral surface 31 and the second end surface 331. Through the cooperation of the first guiding surface 24222 and the second guiding surface 332, the smoothness of the mating connection between the first connecting portion 2422 and the third connecting portion 33 can be increased, and the wear of 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 portion 2422 and the third connecting portion 33 is reduced.

[0079] In one embodiment, a third guiding surface 24322 is provided at the connection between the second cam spiral surface 22 and the third end surface 24321, and a fourth guiding surface 132 is provided at the connection between the fourth cam spiral surface 11 and the fourth end surface 131. Through the cooperation of the third guiding surface 24322 and the fourth guiding surface 132, the smoothness of the mating connection between the second connecting portion 2432 and the fourth connecting portion 13 can be increased, and the wear of 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 portion 2432 and the fourth connecting portion 13 is reduced.

[0080] In one embodiment, the bracket body 12 includes a first end and a second end that are oppositely arranged. The first end is the first spring of the bracket body 12 provided with the fourth connecting portion 13, and the second end is provided with a first receiving space 121, and a part of the first slider body 32 is located in the first receiving space 121.

[0081] In this embodiment, by providing the first receiving space 121 at the second end of the bracket body 12 to accommodate the first slider body 32, the installation space required for the setting of the first slider 30 is reduced, and the overall volume of the hinge mechanism is reduced.

[0082] In one embodiment, a chute may be provided on the first slider body 32, and a slide rail adapted to the chute may be provided on the bracket body 12. Through the cooperation of the chute and the slide rail, the deviation of the first slider body 32 during the sliding process can be avoided.

[0083] In one embodiment, the above slide rail may be located in the first receiving space 121.

[0084] In one embodiment, the hinge mechanism further 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 abuts against 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 acting force in the first direction to the first slider body 32. The first direction is the direction from the second end of the rotating shaft 40 to the first end of the rotating shaft.

[0085] In this embodiment, through the setting of the elastic member 50 and using the elastic member 50 to apply an elastic acting force in the 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 matched; 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 matched, so that the accuracy of the synchronous movement of the hinge mechanism is higher.

[0086] Moreover, the setting of the elastic member 50 can further increase the contact friction force between the first cam spiral surface 21 and the third cam spiral surface 31, and increase the contact friction force between the second cam spiral surface 22 and the fourth cam spiral surface 11, so that the swing arm 24 can achieve hovering at any position, further improving the rotational damping force and hovering effect of the hinge mechanism.

[0087] In addition, the above-mentioned baffle 60 can keep the elastic force of the elastic member 50 at a relatively large level all the time, so as to improve the hovering effect of the hinge mechanism.

[0088] In one embodiment, the baffle 60 includes a baffle body 61 and a clamping portion 62 provided on the baffle body 61. The baffle body 61 abuts against the first slider body 32.

[0089] A clamping groove 41 adapted to the clamping portion 62 is provided on the rotating shaft 40, and the clamping portion 62 is inserted into the clamping groove 41.

[0090] In this embodiment, through the cooperation of the clamping portion 62 and the clamping groove 41, the baffle 60 is fixedly arranged on the rotating shaft 40, so as to realize the limiting effect of the baffle 60 on the first slider body 32, and keep the elastic force of the elastic member 50 at a relatively large level all the time, achieving the purpose of improving the hovering effect of the hinge mechanism.

[0091] In one embodiment, two clamping portions 62 can be provided on the baffle 60, so that the baffle 60 can be clamped and fixed to the two rotating shafts 40 arranged on the hinge bracket 10 at the same time.

[0092] In one embodiment, the first slider 30 further includes a stopper 34 provided on the first slider body 32. The stopper extends out of the first slider body 32 partially and abuts against one end of the baffle body 61 away from the rotating shaft 40, so as to prevent the baffle 60 from moving out of the rotating shaft 40, improving the reliability of the hinge mechanism.

[0093] In one embodiment, the second slider 23 further includes a second slider body 231, and a third rotating portion 232 is provided on the second slider body 231.

[0094] A second receiving space 122 is provided on the bracket body 12, and the second slider body 231 is partially located in the second receiving space 122.

[0095] In this embodiment, by providing the second receiving space 122 at the second end of the bracket body 12 to accommodate the second slider body 231, the installation space required for the setting of the second slider 23 is reduced, and the overall volume of the hinge mechanism is reduced.

[0096] In one embodiment, the first receiving space 121 and the second receiving space 122 are respectively arranged on two opposite sides of the bracket body 12, and the first receiving space 121 and the second receiving space 122 are arranged in a staggered manner on the bracket body 12. By such an arrangement, it is possible to avoid the stacking of the first slider body 32 and the second slider body 231 in the thickness direction of the bracket body 12, reduce the stacking height of the hinge mechanism in the thickness direction of the bracket body 12, effectively reduce the overall volume of the hinge mechanism, so that the hinge mechanism can be applied to more models of electronic devices, and improve the compatibility of the hinge mechanism.

[0097] An embodiment of the present application further provides an electronic device including the above hinge mechanism.

[0098] It should be noted that the implementation manner of the above hinge mechanism embodiment is also applicable to the embodiment of this electronic device and can achieve the same technical effect, which will not be elaborated here.

[0099] Among them, the electronic device can be a mobile phone, a laptop computer, or a palm computer.

[0100] In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0101] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A hinge mechanism, characterized in that, include: A hinge bracket, a swing arm assembly, a first slider and a rotating shaft, wherein 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 rotationally 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 rotationally 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.

2. The hinge mechanism according to claim 1, characterized in that, 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, the 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 comprises a swing arm body and a first rotating part and a second rotating part arranged on the swing arm body, a gap is provided between the first rotating part and the second rotating part, the second slider comprises 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 rotatably connected relative to the rotating shaft through the first rotating part and the second rotating part; The first cam helical surface is disposed on a side of the first rotating portion facing away from the gap, and the second cam helical surface is disposed on a side of the second rotating portion facing away from the gap.

3. The hinge mechanism according to claim 2, characterized in that: The first rotating part comprises a first rotating part body and a first connecting part, wherein 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, and the first connecting part is provided with the first cam spiral surface along the rotation direction of the first rotating part; The second rotating part comprises 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, and the second connecting part is provided with a second cam spiral surface along the rotation direction of the second rotating part; The first slider includes a first slider body and a third connecting portion arranged on the first slider body, the first slider body is sleeved on the rotating shaft, the third connecting portion extends along the rotating shaft, and the third cam spiral surface is arranged on the third connecting portion; The hinge bracket includes a bracket body and a fourth connecting portion arranged on the bracket body, the rotating shaft is arranged on the bracket body, the fourth connecting portion extends along the rotating shaft, and the fourth cam spiral surface is arranged on the fourth connecting portion.

4. The hinge mechanism according to claim 3, characterized in that: 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, and a second guiding surface is provided at the connection between the third cam spiral surface and the second end face. 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, and a fourth guiding surface is provided at the connection between the fourth cam spiral surface and the fourth end face. 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, characterized in that 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, characterized in that, 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 provided on the baffle body. 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, characterized in that, 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, characterized in that, The first receiving space and the second receiving space are respectively provided on two opposite sides of the bracket body, and the first receiving space and the second receiving space are distributed in a staggered manner on the bracket body.

11. An electronic device, characterized in that, It includes the hinge mechanism according to any one of claims 1 to 10.

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