Hinge mechanism and electronic device

Abstract

The application provides a hinge mechanism and an electronic device, the hinge mechanism comprising a hinge support, a swing arm assembly, a pivot assembly and a damping adjustment assembly, the swing arm assembly being rotationally connected with the hinge support through the pivot assembly, and the damping adjustment assembly being arranged on the pivot assembly; wherein the damping adjustment assembly comprises a first transmission member, a positioning member, a screw rod and a first elastic member, the first transmission member being cam-connected with the swing arm assembly, the positioning member being arranged at one end of the pivot assembly, the first elastic member being arranged between the positioning member and the first transmission member, the length of the first elastic member being adjustable when the screw rod rotates, and the rotational damping of the swing arm assembly being changed when the length of the first elastic member changes.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of hinge mechanism, and particularly relates to a hinge mechanism and electronic equipment. BACKGROUND

[0002] With the rapid development of electronic technology, mobile terminal products such as mobile phones are updated and iterated more and more frequently. Among them, folding machines are favored by users because they have folding and unfolding states, so that they can adjust their display area accordingly to meet different user needs.

[0003] In the related art, two main bodies of the folding machine are usually connected by a hinge mechanism to switch between the folding state and the unfolding state. The torque provided by the hinge mechanism can affect the opening and closing experience of the folding machine. However, the current hinge mechanism has a fixed torque after production and assembly due to structural limitations, and cannot be flexibly adjusted according to user needs or changes in environmental conditions. SUMMARY

[0004] The present application aims to provide a new technical solution for a hinge mechanism and electronic equipment to solve the problem of the hinge mechanism in the related art that the opening and closing torque cannot be flexibly adjusted.

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

[0006] The hinge mechanism according to the present application comprises a hinge bracket, an arm assembly, a pivot assembly and a damping adjustment assembly. The arm assembly is rotatably connected to the hinge bracket through the pivot assembly, and the damping adjustment assembly is arranged on the pivot assembly. The damping adjustment assembly comprises a first transmission member, a positioning member, a screw rod and a first elastic member. The first transmission member is connected to the arm assembly by a cam. The positioning member is arranged at one end of the pivot assembly. The first elastic member is arranged between the positioning member and the first transmission member. The length of the first elastic member can be adjusted when the screw rod rotates. When the length of the first elastic member changes, the rotational damping of the arm assembly changes.

[0007] The present application also provides an electronic device comprising a first main body, a second main body and the hinge mechanism described above. The first main body and the second main body are rotatably connected by the hinge mechanism, so that the electronic device can switch between the folding state and the unfolding state.

[0008] In the present application, the present application is capable of adjusting the opening and closing torque in the folding or unfolding process of the electronic device by setting the damping adjusting assembly comprising a first transmission member, a positioning member, a screw rod and a first elastic member, the first transmission member is connected with the swing arm assembly cam, the positioning member is arranged at one end of the rotating shaft assembly, the first elastic member is arranged between the positioning member and the first transmission member, the length of the first elastic member can be adjusted when the screw rod rotates, and the rotating damping of the swing arm assembly changes when the length of the first elastic member changes, so as to adjust the opening and closing torque in the folding or unfolding process of the electronic device, adapt to different opening and closing torque requirements of users, and expand the application range of the electronic device with the hinge mechanism.

[0009] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0010] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0011] Figure 1 is a schematic view of a hinge mechanism according to an embodiment of the present application;

[0012] Figure 2 is an exploded view of a hinge mechanism according to an embodiment of the present application;

[0013] Figure 3 is another schematic view of a hinge mechanism according to an embodiment of the present application;

[0014] Figure 4 is a schematic view of another hinge mechanism according to an embodiment of the present application;

[0015] Figure 5 is a schematic view of still another hinge mechanism according to an embodiment of the present application;

[0016] Figure 6 is a partial schematic view of a hinge mechanism according to an embodiment of the present application;

[0017] Figure 7 is another partial schematic view of a hinge mechanism according to an embodiment of the present application;

[0018] Figure 8 is a flowchart of torque adjustment of an electronic device according to an embodiment of the present application.

[0019] REFERENCE SIGNS:

[0020] 1, hinge support; 2, swing arm assembly; 21, first gear; 3, rotating shaft assembly; 4, damping adjustment assembly; 41, first transmission member; 42, positioning member; 43, screw rod; 44, first elastic member; 45, second transmission member; 46, second elastic member; 5, motor; 6, second gear; 61, first limiting member; 7, second limiting member; 8, third elastic member. DETAILED DESCRIPTION

[0021] Embodiments of the present application will be described in detail below with reference to examples thereof as illustrated in the accompanying drawings, in which like or similar elements or components each having the same or similar function and structure are designated by the same reference numerals throughout the several views. The embodiments described below with reference to the drawings merely exemplify the present application and are not intended to limit the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application, without creative work, are within the scope of the present application.

[0022] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0023] In the description of the present application, it should be understood that 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" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] The following will be described in detail Figure 1 - Figure 8A hinge mechanism is described.

[0026] According to some embodiments of the present application, a hinge mechanism is provided, which can be used in electronic devices, especially foldable electronic devices. The electronic device comprises a first body and a second body, the first body is provided with a first screen, the second body is provided with a second screen, and the first body and the second body are rotationally connected by the hinge mechanism, so that the electronic device can be switched between a folded state and an unfolded state, thereby adjusting the display area of the electronic device.

[0027] As shown in Figure 1 - Figure 5 The hinge mechanism comprises:

[0028] a hinge bracket 1, an arm swing assembly 2, a pivot assembly 3, and a damping adjustment assembly 4, the arm swing assembly 2 is rotationally connected with the hinge bracket 1 through the pivot assembly 3, and the damping adjustment assembly 4 is arranged on the pivot assembly 3.

[0029] The damping adjustment assembly 4 comprises a first transmission member 41, a positioning member 42, a screw rod 43, and a first elastic member 44, the first transmission member 41 is cam-connected with the arm swing assembly 2, the positioning member 42 is arranged at one end of the pivot assembly 3, the first elastic member 44 is arranged between the positioning member 42 and the first transmission member 41, the length of the first elastic member 44 can be adjusted when the screw rod 43 rotates, and the rotational damping of the arm swing assembly 2 changes when the length of the first elastic member 44 changes.

[0030] As shown in Figure 1 The hinge bracket 1 is used to connect with the frame of the electronic device, for example, the hinge bracket 1 can be connected to the first body and the second body. The hinge bracket 1 is provided with the pivot assembly 3, the arm swing assembly 2, and other structural members, so that the electronic device can be switched between the folded state and the unfolded state under the driving of the hinge mechanism.

[0031] Specifically, as shown in Figure 1 and Figure 2 The pivot assembly 3 is rotationally connected to the hinge bracket 1, and the arm swing assembly 2 is rotationally connected with the hinge bracket 1 through the pivot assembly 3, for example, the arm swing assembly 2 can be sleeved on the pivot assembly 3, so that the arm swing assembly 2 is rotationally connected with the hinge bracket 1. The arm swing assembly 2 is connected to the first body and / or the second body of the electronic device, so that the first body and the second body are also rotationally connected, thereby the electronic device can be switched between the folded state and the unfolded state, so as to adjust the display area of the electronic device.

[0032] The damping adjustment assembly 4 is arranged on the rotating shaft assembly 3, and is usually arranged at an end of the rotating shaft assembly 3. The damping adjustment assembly 4 is used to provide a friction force to the swing arm assembly 2, so that the electronic device can be folded and unfolded under a certain opening and closing torque.

[0033] As shown in Figure 1 - Figure 5 The damping adjustment assembly 4 arranged in the embodiment of the present application includes a first transmission member 41, a positioning member 42, a screw rod 43 and a first elastic member 44. The rotation damping of the swing arm assembly 2 relative to the rotating shaft assembly 3 can be adjusted by cooperation between the first transmission member 41, the positioning member 42, the screw rod 43 and the first elastic member 44, so that the opening and closing torque during folding or unfolding of the electronic device can be adjusted.

[0034] Specifically, the first transmission member 41 is in cam connection with the swing arm assembly 2, so that the first transmission member 41 and the swing arm assembly 2 can be in transmission. For example, the swing arm assembly 2 has a first tooth on a side facing the first transmission member 41, and the first transmission member 41 has a second tooth on a side facing the swing arm assembly 2, and the first tooth and the second tooth are in meshing transmission. During rotation of the swing arm assembly 2, the swing arm assembly 2 can drive the first transmission member 41 to move axially along the rotating shaft assembly 3 to move away from or approach the swing arm assembly 2 through the meshing transmission between the first tooth and the second tooth. The first transmission member 41 can be a sliding cam, a sliding blocking ring or the like.

[0035] As shown in Figure 1 - Figure 5 The positioning member 42 is arranged at one end of the rotating shaft assembly 3, for example, the positioning member 42 can be arranged at an end of the rotating shaft assembly 3 away from the swing arm assembly 2, so that the positioning member 42 can position and stop other structures in the damping adjustment assembly 4, improve the adjustment reliability of the damping adjustment assembly 4, and facilitate assembly of the other structures.

[0036] As shown in Figure 1 - Figure 5 The first elastic member 44 is arranged between the positioning member 42 and the first transmission member 41. When the screw rod 43 rotates, the screw rod 43 can transmit force through a transmission member sleeved thereon, so as to compress or stretch the first elastic member 44 and adjust the length of the first elastic member 44. The screw rod 43 can be connected with the second gear 6 on the hinge mechanism. Rotation of the swing arm assembly 2 can drive the second gear 6 to rotate, so as to drive the screw rod 43 to rotate. The first elastic member 44 can be a spring sleeved on the rotating shaft assembly 3.

[0037] When the length of the first elastic member 44 changes, the friction between the first elastic member 44 and the screw rod 43 (the transmission member sleeved thereon) changes, so that the friction between the screw rod 43 and the first transmission member 41 changes, and the friction between the first transmission member 41 and the swing arm assembly 2 changes, thereby changing the rotation damping of the swing arm assembly 2, so as to adjust the opening and closing torque in the folding or unfolding process of the electronic device, adapt to different opening and closing torque requirements of users, and expand the application range of the electronic device using the hinge mechanism.

[0038] When the damping adjustment assembly 4 is in the first adjustment state, the swing arm assembly 2 can drive the screw rod 43 to rotate in the first direction, the screw rod 43 can transmit force through the transmission member sleeved thereon and compress the first elastic member 44, so that the length of the first elastic member 44 becomes smaller, thereby increasing the friction between the first elastic member 44 and the screw rod 43 (the transmission member sleeved thereon), increasing the friction between the screw rod 43 and the first transmission member 41, and increasing the friction between the first transmission member 41 and the swing arm assembly 2, thereby increasing the rotation damping of the swing arm assembly 2, that is, increasing the opening and closing torque.

[0039] When the damping adjustment assembly 4 is in the second adjustment state, the swing arm assembly 2 can drive the screw rod 43 to rotate in the second direction, the screw rod 43 can transmit force through the transmission member sleeved thereon and stretch the first elastic member 44, so that the length of the first elastic member 44 becomes larger, thereby reducing the friction between the first elastic member 44 and the screw rod 43 (the transmission member sleeved thereon), reducing the friction between the screw rod 43 and the first transmission member 41, and reducing the friction between the first transmission member 41 and the swing arm assembly 2, thereby reducing the rotation damping of the swing arm assembly 2, that is, reducing the opening and closing torque.

[0040] The first rotation direction and the second rotation direction of the screw rod 43 are opposite rotation directions, and the first rotation direction and the second rotation direction of the screw rod 43 can be adjusted by the forward rotation and reverse rotation of the swing arm assembly 2.

[0041] Optionally, the damping adjustment assembly 4 further comprises a second transmission member 45, the second transmission member 45 is arranged between the positioning member 42 and the first transmission member 41, the second transmission member 45 abuts against the first elastic member 44, and the second transmission member 45 is sleeved on the screw rod 43, when the screw rod 43 rotates, the second transmission member 45 moves along the axial direction of the screw rod 43 to adjust the length of the first elastic member 44.

[0042] As Figure 1 - Figure 5As shown, the damping adjustment assembly 4 further comprises a second transmission member 45, which is arranged between the positioning member 42 and the first transmission member 41, and is used to adjust the length of the first elastic member 44 when the screw rod 43 rotates.

[0043] Optionally, the second transmission member 45 is sleeved on the screw rod 43, and the region where the second transmission member is connected with the screw rod 43 is threadedly matched, so that the second transmission member and the screw rod 43 constitute threaded transmission, and the second transmission member 45 abuts against the first elastic member 44. When the screw rod 43 rotates, the second transmission member 45 can move along the axial direction of the screw rod 43 to compress or stretch the first elastic member 44, so as to adjust the length of the first elastic member 44. The second transmission member 45 can be a sliding cam, a sliding blocking ring, etc.

[0044] For example, when the damping adjustment assembly 4 is in the first adjustment state, the swing arm assembly 2 can drive the screw rod 43 to rotate in the first direction, so that the second transmission member 45 sleeved on the screw rod 43 can move axially to compress the first elastic member 44, the length of the first elastic member 44 becomes smaller, the friction between the first elastic member 44 and the second transmission member 45 increases, the friction between the second transmission member 45 and the screw rod 43 increases, the friction between the screw rod 43 and the first transmission member 41 increases, and the friction between the first transmission member 41 and the swing arm assembly 2 increases, so that the rotation damping of the swing arm assembly 2 increases, that is, the opening and closing torque increases.

[0045] When the damping adjustment assembly 4 is in the second adjustment state, the swing arm assembly 2 can drive the screw rod 43 to rotate in the second direction, so that the second transmission member 45 sleeved on the screw rod 43 can move axially away from the first elastic member 44 to stretch the first elastic member 44, the length of the first elastic member 44 becomes larger, the friction between the first elastic member 44 and the second transmission member 45 decreases, the friction between the second transmission member 45 and the screw rod 43 decreases, the friction between the screw rod 43 and the first transmission member 41 decreases, and the friction between the first transmission member 41 and the swing arm assembly 2 decreases, so that the rotation damping of the swing arm assembly 2 decreases, that is, the opening and closing torque decreases.

[0046] Optionally, the first elastic member 44 is arranged between the positioning member 42 and the second transmission member 45.

[0047] Figure 1 - Figure 3 A schematic view of the hinge mechanism is shown.

[0048] As Figure 1 - Figure 3As shown, in this embodiment of the invention, the first elastic element 44 can be disposed between the positioning element 42 and the second transmission element 45, that is, the first elastic element 44 is sandwiched between the positioning element 42 and the second transmission element 45, so that the length of the first elastic element 44 can be adjusted by the axial movement of the second transmission element 45, thereby adjusting the magnitude of the friction between the first elastic element 44 and the second transmission element 45, so that the friction between the second transmission element 45 and the screw 43, the friction between the screw 43 and the first transmission element 41, and the friction between the first transmission element 41 and the swing arm assembly 2 also change accordingly, thereby adjusting the rotational damping of the swing arm assembly 2 to achieve the adjustment of the opening and closing torque.

[0049] Optionally, the damping adjustment assembly 4 further includes a second elastic element 46, and the rotating shaft assembly 3 includes a first shaft and a second shaft arranged side by side. The first elastic element 44 is sleeved on the first shaft, and the second elastic element 46 and the screw 43 are both sleeved on the second shaft, with the second elastic element 46 located between the screw 43 and the positioning element 42.

[0050] like Figure 1 - Figure 3 As shown, the rotating shaft assembly 3 in this embodiment of the invention may include a first shaft and a second shaft arranged side by side, both of which are rotatably connected to the hinge bracket 1. A first elastic element 44 is sleeved on the first shaft, and a second elastic element 46 and a screw 43 are both sleeved on the second shaft; that is, the first elastic element 44 and the second elastic element 46 are located on different shafts. The first elastic element 44 may be a spring sleeved on the first shaft, and the second elastic element 46 may be a spring sleeved on the second shaft.

[0051] The second transmission component 45 is sleeved on the first shaft and the second shaft, and abuts against the first elastic component 44. When the screw 43 rotates, the second transmission component 45, which is threaded to the screw 43, can move axially and adjust the length of the first elastic component 44 located on the first shaft.

[0052] The second elastic element 46 is clamped between the screw 43 and the positioning element 42, and friction also exists between the second elastic element 46 and the screw 43. When the hinge mechanism is in the normal open / closed state, that is, when the damping adjustment component 4 is in the non-adjusted state, the screw 43 cannot rotate, and the first transmission component 41 moves axially under the drive of the swing arm assembly 2, compressing or stretching the screw 43. During this process, the second elastic element 46 clamped between the screw 43 and the positioning element 42 can also prevent the screw 43 from moving between the first transmission component 41 and the positioning element 42 if the elastic force of the first elastic element 44 is too small.

[0053] Optionally, the length of the first elastic member 44 is greater than the length of the second elastic member 46.

[0054] As shown in Figure 1 - Figure 5 The length of the first elastic member 44 is greater than the length of the second elastic member 46, that is, the length of the elastic member on the first shaft body is greater than the length of the elastic member on the second shaft body, so that the second transmission member 45 can abut against the first elastic member 44, and the axial movement of the second transmission member 45 can adjust the length of the first elastic member 44, thereby adjusting the rotation damping of the swing arm assembly 2 to achieve the adjustment of the opening and closing torque.

[0055] The length of the second elastic member 46 on the second shaft body is relatively small, which can also reduce the space occupation of the second elastic member 46 on the second shaft body, facilitate the arrangement of other structures such as the screw rod 43 on the second shaft body, and expand the function of the hinge mechanism.

[0056] In addition, the pivot assembly 3 can also include side-by-side arranged first shaft body, second shaft body, third shaft body and fourth shaft body, wherein the first shaft body and the fourth shaft body are located on both sides, and the second shaft body and the third shaft body are located in the middle. The first elastic member 44 is sleeved on the first shaft body and the fourth shaft body, the second elastic member 46 is sleeved on the second shaft body and the third shaft body, and the second transmission member 45 abuts against the first elastic member 44 on the first shaft body and the fourth shaft body, so that the length of the two first elastic members 44 can be synchronously adjusted by the axial movement of the second transmission member 45, thereby adjusting the rotation damping of the swing arm assembly 2 to achieve the adjustment of the opening and closing torque.

[0057] Optionally, the first elastic member 44 is arranged between the first transmission member 41 and the second transmission member 45.

[0058] Figure 4 Another schematic view of the hinge mechanism is shown.

[0059] As shown in Figure 4 The first elastic member 44 is arranged between the first transmission member 41 and the second transmission member 45, that is, the first elastic member 44 is clamped between the first transmission member 41 and the second transmission member 45, so that the length of the first elastic member 44 can be adjusted by the axial movement of the second transmission member 45, thereby adjusting the friction between the first elastic member 44 and the first transmission member 41, and the friction between the first transmission member 41 and the swing arm assembly 2 also changes accordingly, thereby adjusting the rotation damping of the swing arm assembly 2 to achieve the adjustment of the opening and closing torque.

[0060] Optionally, the damping adjustment assembly 4 further comprises a second elastic member 46, the rotating shaft assembly 3 comprises a first shaft body and a second shaft body arranged side by side, the first elastic member 44 is sleeved on the first shaft body, and the second elastic member 46 and the screw rod 43 are both sleeved on the second shaft body, and the second elastic member 46 is located between the screw rod 43 and the first transmission member 41.

[0061] As shown in the figure, the hinge mechanism of the embodiment of the present application is provided with a rotating shaft assembly 3 which can comprise a first shaft body and a second shaft body arranged side by side, and the first shaft body and the second shaft body are both rotationally connected to the hinge bracket 1. The first elastic member 44 is sleeved on the first shaft body, and the second elastic member 46 and the screw rod 43 are both sleeved on the second shaft body, that is, the first elastic member 44 and the second elastic member 46 are located on different shaft bodies respectively. Figure 4

[0062] The second transmission member 45 is sleeved on the first shaft body and the second shaft body and abuts against the first elastic member 44. When the screw rod 43 rotates, the second transmission member 45 which is in threaded transmission with the screw rod 43 can move axially and adjust the length of the first elastic member 44 located on the first shaft body.

[0063] The second elastic member 46 is clamped between the screw rod 43 and the first transmission member 41, and there is a friction force between the second elastic member 46 and the screw rod 43 and between the second elastic member 46 and the first transmission member 41. When the hinge mechanism is in a normal opening and closing state, that is, the damping adjustment assembly 4 is in a non-adjustment state, the screw rod 43 cannot rotate, the first transmission member 41 moves axially under the drive of the swing arm assembly 2 and compresses or stretches the first elastic member 44 and the second elastic member 46. In this process, the second elastic member 46 clamped between the screw rod 43 and the first transmission member 41 can also prevent the screw rod 43 from moving between the first transmission member 41 and the positioning member 42 when the elastic force of the first elastic member 44 is too small.

[0064] In addition, a spring stop ring can also be arranged between the screw rod 43 and the second elastic member 46, which can compress the second elastic member 46 and also facilitate the arrangement of the screw rod 43. When the rotating shaft assembly 3 comprises two second shaft bodies arranged side by side, the second elastic member 46 is arranged on both second shaft bodies, and the two spring stop rings on the side close to the screw rod 43 of the second elastic member 46 can be integrated, so as to improve the assembly efficiency of the hinge mechanism.

[0065] Optionally, the hinge mechanism further comprises a motor 5, the motor 5 is connected to the second shaft body, and the motor 5 is used to drive the screw rod 43 to rotate.

[0066] Figure 5 Another hinge mechanism of the present application is shown in the figure.

[0067] As​Figure 5 As shown, the hinge mechanism of the embodiment of the present application can further comprise a motor 5, and the motor 5 can also be used to control the movement of the screw rod 43. Specifically, the motor 5 is connected with the second shaft body, so that the motor 5 can drive the second shaft body and the screw rod 43 arranged thereon to rotate. When the motor 5 rotates forward or reversely, the screw rod 43 can rotate correspondingly, so that the second transmission member 45 threadedly connected with the screw rod 43 can move along the axial direction of the screw rod 43 to compress or stretch the first elastic member 44 and adjust the length of the first elastic member 44, thereby adjusting the rotation damping of the swing arm assembly 2 to achieve the adjustment of the opening and closing torque.

[0068] As shown, the hinge mechanism of the embodiment of the present application can further comprise a motor 5, and the motor 5 can also be used to control the movement of the screw rod 43. Specifically, the motor 5 is connected with the second shaft body, so that the motor 5 can drive the second shaft body and the screw rod 43 arranged thereon to rotate. When the motor 5 rotates forward or reversely, the screw rod 43 can rotate correspondingly, so that the second transmission member 45 threadedly connected with the screw rod 43 can move along the axial direction of the screw rod 43 to compress or stretch the first elastic member 44 and adjust the length of the first elastic member 44, thereby adjusting the rotation damping of the swing arm assembly 2 to achieve the adjustment of the opening and closing torque.

[0069] As shown, the hinge mechanism of the embodiment of the present application can further comprise a motor 5, and the motor 5 can also be used to control the movement of the screw rod 43. Specifically, the motor 5 is connected with the second shaft body, so that the motor 5 can drive the second shaft body and the screw rod 43 arranged thereon to rotate. When the motor 5 rotates forward or reversely, the screw rod 43 can rotate correspondingly, so that the second transmission member 45 threadedly connected with the screw rod 43 can move along the axial direction of the screw rod 43 to compress or stretch the first elastic member 44 and adjust the length of the first elastic member 44, thereby adjusting the rotation damping of the swing arm assembly 2 to achieve the adjustment of the opening and closing torque.

[0070] As shown, the hinge mechanism of the embodiment of the present application can further comprise a motor 5, and the motor 5 can also be used to control the movement of the screw rod 43. Specifically, the motor 5 is connected with the second shaft body, so that the motor 5 can drive the second shaft body and the screw rod 43 arranged thereon to rotate. When the motor 5 rotates forward or reversely, the screw rod 43 can rotate correspondingly, so that the second transmission member 45 threadedly connected with the screw rod 43 can move along the axial direction of the screw rod 43 to compress or stretch the first elastic member 44 and adjust the length of the first elastic member 44, thereby adjusting the rotation damping of the swing arm assembly 2 to achieve the adjustment of the opening and closing torque.

[0071] As shown, the hinge mechanism of the embodiment of the present application can further comprise a motor 5, and the motor 5 can also be used to control the movement of the screw rod 43. Specifically, the motor 5 is connected with the second shaft body, so that the motor 5 can drive the second shaft body and the screw rod 43 arranged thereon to rotate. When the motor 5 rotates forward or reversely, the screw rod 43 can rotate correspondingly, so that the second transmission member 45 threadedly connected with the screw rod 43 can move along the axial direction of the screw rod 43 to compress or stretch the first elastic member 44 and adjust the length of the first elastic member 44, thereby adjusting the rotation damping of the swing arm assembly 2 to achieve the adjustment of the opening and closing torque. Figure 2 - Figure 5 As shown, the hinge mechanism of the embodiment of the present application can further comprise a motor 5, and the motor 5 can also be used to control the movement of the screw rod 43. Specifically, the motor 5 is connected with the second shaft body, so that the motor 5 can drive the second shaft body and the screw rod 43 arranged thereon to rotate. When the motor 5 rotates forward or reversely, the screw rod 43 can rotate correspondingly, so that the second transmission member 45 threadedly connected with the screw rod 43 can move along the axial direction of the screw rod 43 to compress or stretch the first elastic member 44 and adjust the length of the first elastic member 44, thereby adjusting the rotation damping of the swing arm assembly 2 to achieve the adjustment of the opening and closing torque.

[0072] As shown, the hinge mechanism of the embodiment of the present application can further comprise a motor 5, and the motor 5 can also be used to control the movement of the screw rod 43. Specifically, the motor 5 is connected with the second shaft body, so that the motor 5 can drive the second shaft body and the screw rod 43 arranged thereon to rotate. When the motor 5 rotates forward or reversely, the screw rod 43 can rotate correspondingly, so that the second transmission member 45 threadedly connected with the screw rod 43 can move along the axial direction of the screw rod 43 to compress or stretch the first elastic member 44 and adjust the length of the first elastic member 44, thereby adjusting the rotation damping of the swing arm assembly 2 to achieve the adjustment of the opening and closing torque. Figure 6 and Figure 7 As shown, the hinge mechanism of the embodiment of the present application can further comprise a motor 5, and the motor 5 can also be used to control the movement of the screw rod 43. Specifically, the motor 5 is connected with the second shaft body, so that the motor 5 can drive the second shaft body and the screw rod 43 arranged thereon to rotate. When the motor 5 rotates forward or reversely, the screw rod 43 can rotate correspondingly, so that the second transmission member 45 threadedly connected with the screw rod 43 can move along the axial direction of the screw rod 43 to compress or stretch the first elastic member 44 and adjust the length of the first elastic member 44, thereby adjusting the rotation damping of the swing arm assembly 2 to achieve the adjustment of the opening and closing torque.

[0073] For example, when the first limiting member 61 and the second limiting member 7 are fixedly connected, the second gear 6 and the screw rod 43 are connected. When the swing arm assembly 2 rotates relative to the hinge support 1, the first gear 21 on the swing arm assembly 2 can drive the second gear 6 to rotate, and the second gear 6 can drive the screw rod 43 to rotate, so that the second transmission member 45 threadedly connected with the screw rod 43 can move along the axial direction of the screw rod 43, so as to compress or stretch the first elastic member 44 and adjust the length of the first elastic member 44, thereby adjusting the rotation damping of the swing arm assembly 2, so as to realize the adjustment of the opening and closing torque.

[0074] When the first limiting member 61 and the second limiting member 7 are disengaged (i.e., disconnected), the second gear 6 and the screw rod 43 are also disconnected. When the swing arm assembly 2 rotates relative to the hinge support 1, the first gear 21 on the swing arm assembly 2 can drive the second gear 6 to rotate, but the second gear 6 cannot drive the screw rod 43 to rotate, at this time, the hinge mechanism is in a normal opening and closing state, and the rotation damping of the swing arm assembly 2 cannot be adjusted.

[0075] Optionally, the first limiting member 61 and the second limiting member 7 are both magnetic members, and the first limiting member 61 is an electromagnetic member. When the first limiting member 61 is powered, the first limiting member 61 and the second limiting member 7 are attracted to each other, so as to limit the relative rotation of the second gear 6 and the screw rod 43.

[0076] As shown in Figure 6 and Figure 7 , the first limiting member 61 and the second limiting member 7 are both magnetic members, and the first limiting member 61 is an electromagnetic member. The connection between the second gear 6 and the screw rod 43 can be controlled by the power-on and power-off of the first limiting member 61.

[0077] Specifically, when the first limiting member 61 is powered, the first limiting member 61 and the second limiting member 7 are magnetically connected, so that the second gear 6 and the screw rod 43 are connected. At this time, when the swing arm assembly 2 rotates relative to the hinge support 1, the first gear 21 on the swing arm assembly 2 can drive the second gear 6 to rotate, and the second gear 6 can drive the screw rod 43 to rotate, so that the second transmission member 45 threadedly connected with the screw rod 43 can move along the axial direction of the screw rod 43, so as to compress or stretch the first elastic member 44 and adjust the length of the first elastic member 44, thereby adjusting the rotation damping of the swing arm assembly 2, so as to realize the adjustment of the opening and closing torque.

[0078] When the first limiting member 61 is powered off, the first limiting member 61 and the second limiting member 7 are disconnected, so that the second gear 6 and the screw rod 43 are also disconnected. At this time, when the swing arm assembly 2 rotates relative to the hinge support 1, the first gear 21 on the swing arm assembly 2 can drive the second gear 6 to rotate, but the second gear 6 cannot drive the screw rod 43 to rotate, at this time, the hinge mechanism is in a normal opening and closing state.

[0079] In addition, the first limiting part 61 can be a magnetic recess, and the second limiting part 7 can be a magnetic protrusion. When the first limiting part 61 is powered, the magnetic attraction between the first limiting part 61 and the second limiting part 7 can drive the second limiting part 7 to move into the first limiting part 61, thereby improving the reliability of the connection between the first limiting part 61 and the second limiting part 7, and further improving the reliability of the connection between the second gear 6 and the screw rod 43.

[0080] In another embodiment, the first limiting part 61 and the second limiting part 7 can also be magnetic parts, and the second limiting part 7 can be an electromagnetic part. The connection between the second gear 6 and the screw rod 43 can be controlled by powering and de-energizing the second limiting part 7. The powering and de-energizing of the second limiting part 7 can be controlled by a conductive wire arranged on the second shaft body.

[0081] Optionally, the first limiting part 61 is a limiting recess, and the second limiting part 7 is a protruding slider. The protruding slider and the limiting recess are connected and matched to control the connection between the second gear 6 and the screw rod 43.

[0082] For example, the second limiting part 7 can be a cross-shaped slider, one end of the cross-shaped slider is connected to the screw rod 43, and the other end of the cross-shaped slider faces the first limiting part 61. The first limiting part 61 can be a strip-shaped recess matched with the cross-shaped slider, thereby further improving the reliability of the connection between the first limiting part 61 and the second limiting part 7, and further improving the reliability of the connection and transmission between the second gear 6 and the screw rod 43.

[0083] Specifically, the hinge mechanism further includes a third elastic part 8 connected between the second limiting part 7 and the end of the screw rod 43. When the second limiting part 7 and the first limiting part 61 are connected and matched, the second gear 6 and the screw rod 43 are connected, and at this time, the third elastic part 8 is in a stretched state. When the second limiting part 7 and the first limiting part 61 are disconnected and matched, the second gear 6 and the screw rod 43 are disconnected, and at this time, the third elastic part 8 is elastically reset and can drive the second limiting part 7 to be disconnected with the first limiting part 61. The third elastic part 8 can be a spring sleeved on the screw rod 43.

[0084] The connection and disconnection of the second limiting part 7 and the first limiting part 61 can be controlled by mechanical structure design.

[0085] Optionally, there are two swing arm assemblies 2, each of which meshes with one of the second gears 6, and the two second gears 6 mesh together.

[0086] like Figure 1 - Figure 5 As shown, in this embodiment of the invention, two swing arm assemblies 2 are provided. One swing arm assembly 2 is connected to the first body of the electronic device, and the other swing arm assembly 2 is connected to the second body of the electronic device. Each swing arm assembly 2 meshes with a second gear 6, and the two second gears 6 mesh, so that the rotation of the two swing arm assemblies 2 can realize the synchronous rotation of the first body and the second body, thereby realizing the reliable switching of the electronic device between the folded state and the unfolded state.

[0087] According to some embodiments of the present invention, an electronic device is also provided, including a first body, a second body, and the hinge mechanism described above, wherein the first body and the second body are rotatably connected by the hinge mechanism so that the electronic device can switch between a folded state and an unfolded state.

[0088] like Figure 8 The electronic device including the hinge mechanism can enter a torque fixed state or a torque adjustment state under the control of the damping adjustment component 4. The torque fixed state is the normal opening and closing state, while in the torque adjustment state, the length of the first elastic element 44 can be adjusted by rotating the screw 43 in the hinge mechanism, thereby adjusting the opening and closing torque during the folding or unfolding process of the electronic device and expanding the function of the electronic device.

[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0090] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A hinge mechanism, characterized by The hinge mechanism comprises a hinge support, a swing arm assembly, a rotating shaft assembly and a damping adjustment assembly, the swing arm assembly is rotationally connected with the hinge support through the rotating shaft assembly, and the damping adjustment assembly is arranged on the rotating shaft assembly. The damping adjustment assembly comprises a first transmission member, a positioning member, a screw rod and a first elastic member, the first transmission member is in cam connection with the swing arm assembly, the positioning member is arranged at one end of the rotating shaft assembly, the first elastic member is arranged between the positioning member and the first transmission member, the length of the first elastic member can be adjusted when the screw rod rotates, and the rotating damping of the swing arm assembly changes when the length of the first elastic member changes. The damping adjustment assembly further comprises a second transmission member, the second transmission member is arranged between the positioning member and the first transmission member, the second transmission member is in abutment with the first elastic member, and the second transmission member is sleeved on the screw rod, so that the second transmission member moves along the axial direction of the screw rod to adjust the length of the first elastic member when the screw rod rotates. The first elastic member is arranged between the positioning member and the second transmission member.

2. The hinge mechanism of claim 1, wherein, The damping adjustment assembly further comprises a second elastic member, the rotating shaft assembly comprises a first shaft body and a second shaft body arranged side by side, the first elastic member is sleeved on the first shaft body, the second elastic member and the screw rod are both sleeved on the second shaft body, and the second elastic member is located between the screw rod and the positioning member.

3. The hinge mechanism of claim 2, wherein, The length of the first elastic member is greater than the length of the second elastic member.

4. The hinge mechanism of claim 3, wherein, The first elastic member is arranged between the first transmission member and the second transmission member.

5. The hinge mechanism of claim 1, wherein, The damping adjustment assembly further comprises a second elastic member, the rotating shaft assembly comprises a first shaft body and a second shaft body arranged side by side, the first elastic member is sleeved on the first shaft body, the second elastic member and the screw rod are both sleeved on the second shaft body, and the second elastic member is located between the screw rod and the first transmission member.

6. The hinge mechanism of claim 5, wherein, Further comprising a motor, the motor is connected with the second shaft body, and the motor is used to drive the screw rod to rotate.

7. The hinge mechanism according to claim 3 or 6, characterized in that The swing arm assembly has a first gear, the hinge mechanism further comprises a second gear, the first gear is in transmission connection with the second gear, the second gear is arranged opposite to the screw rod, and the first gear drives the second gear to rotate when the swing arm assembly rotates relative to the hinge support.

8. The hinge mechanism according to any one of claims 1 to 6, characterized in that The opposite ends of the second gear and the screw rod are respectively provided with a first limiting member and a second limiting member, the second gear can drive the screw rod to rotate when the first limiting member and the second limiting member are fixedly connected. The first limiting member and the second limiting member are both magnetic members, and the first limiting member is an electromagnetic member, the first limiting member and the second limiting member are attracted to each other to limit the relative rotation of the second gear and the screw rod when the first limiting member is electrified.

9. The hinge mechanism of claim 8, wherein, The swing arm assembly is two, each swing arm assembly is engaged with a second gear, and the two second gears are engaged.

10. The hinge mechanism of claim 8, wherein, The hinge mechanism comprises a hinge support, a swing arm assembly, a rotating shaft assembly and a damping adjustment assembly, the swing arm assembly is rotationally connected with the hinge support through the rotating shaft assembly, and the damping adjustment assembly is arranged on the rotating shaft assembly.

11. An electronic device, comprising: The damping adjustment assembly comprises a first transmission member, a positioning member, a screw rod and a first elastic member, the first transmission member is in cam connection with the swing arm assembly, the positioning member is arranged at one end of the rotating shaft assembly, the first elastic member is arranged between the positioning member and the first transmission member, the length of the first elastic member can be adjusted when the screw rod rotates, and the rotating damping of the swing arm assembly changes when the length of the first elastic member changes. The damping adjustment assembly further comprises a second transmission member, the second transmission member is arranged between the positioning member and the first transmission member, the second transmission member is in abutment with the first elastic member, and the second transmission member is sleeved on the screw rod, so that the second transmission member moves along the axial direction of the screw rod to adjust the length of the first elastic member when the screw rod rotates. The first elastic member is arranged between the positioning member and the second transmission member. The damping adjustment assembly further comprises a second elastic member, the rotating shaft assembly comprises a first shaft body and a second shaft body arranged side by side, the first elastic member is sleeved on the first shaft body, the second elastic member and the screw rod are both sleeved on the second shaft body, and the second elastic member is located between the screw rod and the positioning member. The length of the first elastic member is greater than the length of the second elastic member. The first elastic member is arranged between the first transmission member and the second transmission member. The damping adjustment assembly further comprises a second elastic member, the rotating shaft assembly comprises a first shaft body and a second shaft body arranged side by side, the first elastic member is sleeved on the first shaft body, the second elastic member and the screw rod are both sleeved on the second shaft body, and the second elastic member is located between the screw rod and the first transmission member. Further comprising a motor, the motor is connected with the second shaft body, and the motor is used to drive the screw rod to rotate. The swing arm assembly has a first gear, the hinge mechanism further comprises a second gear, the first gear is in transmission connection with the second gear, the second gear is arranged opposite to the screw rod, and the first gear drives the second gear to rotate when the swing arm assembly rotates relative to the hinge support. The opposite ends of the second gear and the screw rod are respectively provided with a first limiting member and a second limiting member, the second gear can drive the screw rod to rotate when the first limiting member and the second limiting member are fixedly connected. The first limiting member and the second limiting member are both magnetic members, and the first limiting member is an electromagnetic member, the first limiting member and the second limiting member are attracted to each other to limit the relative rotation of the second gear and the screw rod when the first limiting member is electrified. The swing arm assembly is two, each swing arm assembly is engaged with a second gear, and the two second gears are engaged. The hinge mechanism comprises a hinge support, a swing arm assembly, a rotating shaft assembly and a damping adjustment assembly, the swing arm assembly is rotationally connected with the hinge support through the rotating shaft assembly, and the damping adjustment assembly is arranged on the rotating shaft assembly. The damping adjustment assembly comprises a first transmission member, a positioning member, a screw rod and a first elastic member, the first transmission member is in cam connection with the swing arm assembly, the positioning member is arranged at one end of the rotating shaft assembly, the first elastic member is arranged between the positioning member and the first transmission member, the length of the first elastic member can be adjusted when the screw rod rotates, and the rotating damping of the swing arm assembly changes when the length of the first elastic member changes. The first main body and the second main body are rotationally connected through the hinge mechanism, so that the electronic device can be switched between a folded state and an unfolded state.

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