Rotating shaft mechanism and equipment

Abstract

The invention provides a rotating shaft mechanism and equipment. The rotating shaft mechanism comprises a first staddle which comprises a first cylinder and is used for being fixedly connected with the first body; the second staddle comprises a second cylinder, and the second staddle is used for being fixedly connected with the second body; the torsion mechanism comprises a first concave-convex wheel, a second concave-convex wheel, a first elastic mechanism and a first nut, the first concave-convex wheel, the second concave-convex wheel, the first elastic mechanism and the first nut are arranged on the first cylinder in a sleeving mode, the first elastic mechanism is configured to be capable of generating elastic deformation in the first direction, and the first direction is the axial direction of the rotating shaft mechanism; wherein the first concave-convex wheel and the inner wall of the first cylinder are integrally formed, and the second cylinder is located in the second cylinder. Due to the split design of the torsion mechanism and the first staddle or the second staddle connected with the first body and the second body, the rotating shaft mechanism can be easily assembled with or separated from the first body and the second body, and the equipment is more convenient to assemble and disassemble.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and more specifically, to a rotating shaft mechanism and device. Background Technology

[0002] As a key component of electronic devices, the hinge mechanism acts as a bridge connecting different parts of the device. These components are connected by hinges to achieve relative rotation and control their relative angles, thus meeting the requirements of a comfortable user experience. The ease of assembly and disassembly of the hinge in electronic devices affects the efficiency of repair. Therefore, a hinge mechanism that is easy to install and disassemble is needed. Summary of the Invention

[0003] This application provides a rotating shaft mechanism and device. The rotating shaft mechanism provided by this application is easy to assemble and disassemble, making the assembly and disassembly of the device more convenient.

[0004] In a first aspect, a pivot mechanism is provided for connecting a first body and a second body of a device, comprising: a first support frame including a first cylinder for fixed connection to the first body; a second support frame including a second cylinder for fixed connection to the second body; and a first spindle extending along a first direction, the first spindle comprising an axially arranged first column and a second column, the first cylinder and the second cylinder being arranged along the first direction, the first column being located within the first cylinder. The first cylinder includes a first end and a second end opposite to each other along the first direction, the first end being the end closer to the second cylinder and the second end being the end farther away from the second cylinder; the torque mechanism includes a first concave cam, a second concave cam, a first elastic mechanism, and a first nut sleeved on the first column, the first elastic mechanism being configured to undergo elastic deformation along the first direction, the first direction being the axial direction of the rotating shaft mechanism; wherein, the first concave cam is integrally formed with the inner wall of the first cylinder, and the second column is located in the second cylinder.

[0005] Based on the above technical solution, since the torque mechanism is designed separately from the first or second support frame connecting the first and second bodies, the rotating shaft mechanism is easy to assemble or separate from the first and second bodies, making the equipment assembly and disassembly more convenient.

[0006] Based on the above technical solution, since the first concave cam and the first cylinder are integrally formed, the structural strength of the first concave cam is improved, which is beneficial to improving the reliability of the rotating shaft mechanism.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, the torque mechanism further includes a first overrunning clutch fitted on the second column; the first overrunning clutch includes a first anti-sway bar extending toward the first end, the first end also including a first countersunk hole, the first anti-sway bar being located in the first countersunk hole, such that the first support drives the first overrunning clutch to rotate around the first axis column.

[0008] Based on the above technical solution, a first overrunning clutch is fitted on the second column. The first overrunning clutch has a larger torque and provides greater torque during the closing process of the rotating shaft mechanism. The first overrunning clutch provides a smaller torque during the opening process of the rotating shaft mechanism, so that the rotating shaft mechanism is easy to open and difficult to close, thereby achieving the effect of easy opening and heavy closing of the rotating shaft mechanism.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the mechanism further includes a torsion spring assembly fitted onto the second column. The torsion spring assembly includes a torsion spring body and a support portion. The support portion is fitted onto the second column, and the torsion spring body is fitted onto the support portion. The support portion is fixedly connected to the second column so that the torsion spring body rotates around the support portion. The torsion spring body includes a first lever arm, a second lever arm, and a torque portion. The first lever arm and the second lever arm are respectively located on opposite sides of the torque portion along the first direction. The first lever arm extends along the first direction toward the side away from the first end, and the second lever arm extends toward the side closer to the first end. The support portion includes a first limiting portion, and the first lever arm is located in the first limiting portion. The first end includes a first countersunk hole, and the second lever arm is located in the first countersunk hole so that the first support can drive the torsion spring body to rotate around the support portion.

[0010] Based on the above technical solution, the torsion spring assembly provides continuously increasing torque during the closing process of the rotating shaft mechanism, making the closing process more laborious. During the opening process of the rotating shaft mechanism, the torque stored in the torsion spring body is released, making the opening process less laborious, thereby achieving the effect of easy opening and heavy closing of the rotating shaft mechanism.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the side of the first concave cam facing the second concave cam includes a first protrusion and a first recess, the first protrusion and the first recess being connected by an extended first curved surface; the side of the second concave cam facing the first concave cam includes a second protrusion and a second recess, the second protrusion and the second recess being connected by an extended second curved surface.

[0012] Based on the above technical solution, when the rotating shaft mechanism is closed, the first elastic mechanism is in a state of being compressed under force. When the rotating shaft mechanism is opened, the elastic force in the first elastic mechanism is released, and the opening process is effortless. However, the closing process requires compressing the first elastic mechanism, which is more strenuous. This achieves the effect of the rotating shaft mechanism being easy to open and difficult to close.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the torque mechanism further includes a third concave cam and a fourth concave cam located between the first elastic mechanism and the first nut. The fourth concave cam includes a second anti-sway bar extending toward the first end. The second end is provided with a second countersunk hole, and the second anti-sway bar is located in the second countersunk hole, so that the first support drives the fourth concave cam to rotate around the first axis column.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the first elastic mechanism includes a disc spring or a spring.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the first end portion further includes a first stop portion located on the side of the first end portion away from the second end portion, and the side of the second cylinder near the first end portion is provided with a first limiting groove, so that during the rotation of the first support frame around the first axis column, the first stop portion moves in the first limiting groove and abuts against the inner wall of the first limiting groove.

[0016] Based on the above technical solution, the cooperation between the first stop and the first limiting groove allows the first support to be suspended at the position when it is rotated to the maximum angle, and not to continue to rotate to a larger angle, which is beneficial to improving the stability of the rotating shaft structure after it is opened.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, a first shim is provided between the first elastic mechanism and the second concave cam, and the first shim abuts against the first elastic mechanism and the second concave cam respectively.

[0018] In a second aspect, a pivot mechanism is provided for connecting a first body and a second body of a device, comprising: a third support frame including a third cylinder for fixed connection to the first body; a fourth support frame including a fourth cylinder for fixed connection to the second body; a second spindle extending along a first direction, the second spindle comprising an axially arranged third column, a fourth column, and a fifth column, the third cylinder and the fourth cylinder being sleeved on the fourth column, the third cylinder and the fourth cylinder being arranged along the first direction; and a torque mechanism. The mechanism includes a fifth concave cam, a sixth concave cam, a third elastic mechanism, and a second nut fitted onto the third column. It also includes a first friction part, a fourth elastic mechanism, and a third nut fitted onto the fifth column. The third and fourth elastic mechanisms are respectively configured to undergo elastic deformation along the first direction, which is the axial direction of the rotating shaft mechanism. The fifth concave cam includes a third anti-sway rod extending toward the fourth column. The third support includes a third countersunk hole, and the third anti-sway rod is located in the third countersunk hole, so that the third support drives the fifth concave cam to rotate around the second axis column.

[0019] Based on the above technical solution, since the torque mechanism is designed separately from the third or fourth support frame connecting the first body and the second body, the rotating shaft mechanism is easy to assemble or separate from the first body and the second body, making the equipment assembly and disassembly more convenient.

[0020] In conjunction with the second aspect, in some implementations of the second aspect, the first frictional component includes a seventh concave cam and an eighth concave cam, the seventh concave cam including a fourth anti-sway bar extending toward the fourth column, and the third support also including a fourth countersunk hole, the fourth anti-sway bar being located in the fourth countersunk hole, such that the third support drives the seventh concave cam to rotate around the second axis column.

[0021] In conjunction with the second aspect, in some implementations of the second aspect, the first friction component includes alternating moving friction plates and fixed friction plates, the fixed friction plates being fixedly connected to the second shaft column, the moving friction plates including an extension extending toward the third support, the third support including a fifth countersunk hole, the extension being located in the fifth countersunk hole, such that the third support drives the moving friction plates to rotate around the second shaft column.

[0022] In some possible implementations, the number of dynamic friction plates and stationary friction plates can be multiple.

[0023] Based on the above technical solution, by designing multiple sets of friction plates, the torque required for the smooth section of the fifth and sixth concave cams can be further reduced, thereby reducing the size of the fifth and sixth concave cams, which is beneficial to the miniaturization of the rotating shaft mechanism.

[0024] In conjunction with the second aspect, in some implementations of the second aspect, a first friction plate is also provided between the fifth concave cam and the third support, and the first friction plate abuts against the fifth concave cam and the third support respectively.

[0025] Based on the above technical solution, by adding a first friction plate between the third support and the fifth concave cam, the torque required for the smooth section of the fifth and sixth concave cams can be reduced, thereby reducing the size of the fifth and sixth concave cams, which is beneficial to the miniaturization of the rotating shaft mechanism.

[0026] In conjunction with the second aspect, in some implementations of the second aspect, the pivot mechanism further includes a support bracket for supporting the torque mechanism, the support bracket being fixedly connected to the third support bracket.

[0027] Based on the above technical solution, the support frame can shield the torque mechanism from external impacts, and the support frame can rotate together with the third support frame, which can improve the reliability of the torque mechanism during use.

[0028] Thirdly, a device is provided, comprising a first body, a second body, and a rotating shaft mechanism as described in the first aspect and any implementation thereof, wherein the first body is fixedly connected to the first support frame, and the second body is fixedly connected to the second support frame.

[0029] Fourthly, a device is provided, comprising a first body, a second body, and a rotating shaft mechanism as described in the second aspect and any implementation thereof, wherein the first body is fixedly connected to the third support, and the second body is fixedly connected to the fourth support. Attached Figure Description

[0030] Figure 1 This is a schematic exploded view of a laptop computer provided in an embodiment of this application.

[0031] Figure 2a The laptop is shown in its open state.

[0032] Figure 2b The laptop is shown in its off state.

[0033] Figure 3 This is a schematic diagram of a rotating shaft mechanism provided in an embodiment of this application.

[0034] Figure 4a This is a schematic diagram of a first support provided in an embodiment of this application.

[0035] Figure 4b This is a schematic diagram of a first support provided in an embodiment of this application.

[0036] Figure 4c yes Figure 4aA schematic cross-sectional view of section AA in the diagram.

[0037] Figure 5a This is a schematic diagram of a torque mechanism provided in an embodiment of this application.

[0038] Figure 5b yes Figure 5a A schematic exploded view of the torque mechanism shown.

[0039] Figure 5c yes Figure 5a A schematic exploded view of the torque mechanism shown.

[0040] Figure 6 This is a schematic diagram of a second concave cam provided in an embodiment of this application.

[0041] Figure 7 This is a schematic diagram of a second support provided in an embodiment of this application.

[0042] Figure 8 This is a schematic diagram of another rotating shaft mechanism provided in an embodiment of this application.

[0043] Figure 9a This is a schematic diagram of another first support provided in an embodiment of this application.

[0044] Figure 9b This is a schematic diagram of another first support provided in an embodiment of this application.

[0045] Figure 9c This is a schematic diagram of another first support provided in an embodiment of this application.

[0046] Figure 9d yes Figure 9a A schematic cross-sectional view of section BB.

[0047] Figure 10a This is a schematic diagram of another torque mechanism provided in an embodiment of this application.

[0048] Figure 10b yes Figure 10a A schematic exploded view of the torque mechanism shown.

[0049] Figure 10c yes Figure 10a A schematic exploded view of the torque mechanism shown.

[0050] Figure 11 This is a schematic diagram of another rotating shaft mechanism provided in an embodiment of this application.

[0051] Figure 12a This is a schematic diagram of another first support provided in an embodiment of this application.

[0052] Figure 12bThis is a schematic diagram of another first support provided in an embodiment of this application.

[0053] Figure 13a This is a schematic diagram of another first support and torsion mechanism provided in the embodiments of this application.

[0054] Figure 13b This is a schematic diagram of another first support and torsion mechanism provided in the embodiments of this application.

[0055] Figure 14a This is a schematic diagram of another torque mechanism provided in an embodiment of this application.

[0056] Figure 14b yes Figure 14a A schematic exploded view of the torque mechanism shown.

[0057] Figure 14c This is a schematic exploded view of the first overrunning clutch provided in the embodiments of this application.

[0058] Figure 14d yes Figure 14a A schematic cross-sectional view of section CC.

[0059] Figure 15 This is a schematic diagram of another rotating shaft mechanism provided in an embodiment of this application.

[0060] Figure 16a This is a schematic diagram of another first support and torsion mechanism provided in the embodiments of this application.

[0061] Figure 16b This is a schematic diagram of another first support and torsion mechanism provided in the embodiments of this application.

[0062] Figure 17a This is a schematic diagram of another first support provided in an embodiment of this application.

[0063] Figure 17b This is a schematic diagram of another first support provided in an embodiment of this application.

[0065] Figure 18a This is a schematic diagram of a torsion spring assembly provided in an embodiment of this application.

[0066] Figure 18b This is a schematic diagram of a torsion spring assembly provided in an embodiment of this application.

[0067] Figure 19a This is a schematic diagram of another torque mechanism provided in an embodiment of this application.

[0068] Figure 19b yes Figure 19a A schematic exploded view of the torque mechanism shown.

[0069] Figure 19c yes Figure 19a A schematic exploded view of the torque mechanism shown.

[0070] Figure 20 This is a schematic diagram of another rotating shaft mechanism provided in an embodiment of this application.

[0071] Figure 21a This is a schematic diagram of a third support provided in an embodiment of this application.

[0072] Figure 21b This is a schematic diagram of a third support provided in an embodiment of this application.

[0073] Figure 22a This is a schematic diagram of another torque mechanism provided in an embodiment of this application.

[0074] Figure 22b yes Figure 22a A schematic exploded view of the torque mechanism shown.

[0075] Figure 22c yes Figure 22a A schematic exploded view of the torque mechanism shown.

[0076] Figure 23 This is a schematic diagram of another rotating shaft mechanism provided in an embodiment of this application.

[0077] Figure 24a This is a schematic diagram of another third support provided in an embodiment of this application.

[0078] Figure 24b This is a schematic diagram of another third support provided in an embodiment of this application.

[0079] Figure 25a This is a schematic diagram of another torque mechanism provided in an embodiment of this application.

[0080] Figure 25b yes Figure 25a A schematic exploded view of the torque mechanism shown.

[0081] Figure 25c yes Figure 25a A schematic exploded view of the torque mechanism shown. Detailed Implementation

[0082] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0083] It should be noted that in the embodiments of this application, the terms "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. The terms "comprising," "including," "having," and their variations all mean "including but not limited to," unless otherwise specifically emphasized. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The sequence numbers of the processes below do not imply the order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0084] In the description of the embodiments of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.

[0085] In this embodiment, references to "one embodiment" or "some embodiments" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. In this application, words such as "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized. In the embodiments of this application, descriptions such as "when," "in the case of," "if," and "if" all refer to the device taking corresponding actions under certain objective circumstances, not to limiting the time, nor to requiring the device to perform a judgment action during implementation, nor implying any other limitations.

[0086] The term "and / or" in the embodiments of this application is merely a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. Additionally, the character " / " in the embodiments of this application generally indicates that the preceding and following related objects have an "or" relationship.

[0087] Furthermore, it should be noted that, in the description of the embodiments of this application, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0088] The hinge mechanism provided in this application embodiment can be used in any device with opening and closing capabilities. For example, the device can be a laptop computer, or an external keyboard for connecting a tablet computer, or the device can be a housing for connecting a tablet computer and an external keyboard. The device may include a first body and a second body.

[0089] To facilitate the description of the application scenarios of the hinge mechanism, we will take a laptop as an example to explain its application in laptops.

[0090] Figure 1 This is a schematic exploded view of a laptop computer provided in an embodiment of this application.

[0091] The laptop includes a hinge mechanism 100, a screen assembly 10, and a host assembly 20. The screen assembly and the host assembly are rotatably connected by the hinge mechanism. One end of the hinge mechanism is fixedly connected to the screen assembly, and the other end is fixedly connected to the host assembly. When the laptop is opened, the screen assembly rotates clockwise relative to the host assembly, and the torque provided by the hinge mechanism keeps the laptop in a stable open state. When the laptop is closed, the screen assembly rotates counterclockwise relative to the host assembly, and the torque provided by the hinge mechanism causes the screen assembly to fall.

[0092] The screen assembly can be considered the first body of the laptop, and the host assembly can be considered the second body of the laptop.

[0093] It is understood that the device provided in the embodiments of this application may include one or more rotating shaft mechanisms. For example, Figure 1 The laptop shown has two hinge mechanisms. For example, the two hinge mechanisms are arranged symmetrically along the axis of the hinge mechanism.

[0094] Currently, torque is generated by a rotating shaft mechanism with a concave cam, disc spring mechanism and torsion spring. The installation of the rotating shaft mechanism usually relies on the overall housing of the equipment, which makes it difficult to disassemble the rotating shaft mechanism after it is assembled with the overall housing.

[0095] To address the aforementioned issues, embodiments of this application provide a rotating shaft mechanism. The torque mechanism of the rotating shaft mechanism is designed separately from the first or second support frame connecting the first and second bodies, making it easy to assemble or separate the rotating shaft mechanism from the first and second bodies, thus making the assembly and disassembly of the equipment more convenient.

[0096] The rotating shaft mechanism provided in the embodiments of this application can facilitate the installation and disassembly of the rotating shaft mechanism and the equipment while shielding the torque mechanism of the rotating shaft mechanism, and can also reduce the size of the rotating shaft mechanism.

[0097] Figure 2a and Figure 2b The laptop's on and off states are displayed.

[0098] like Figure 2a As shown, the laptop is currently in the open state, or more specifically, the hinge mechanism is in the open state. Figure 2b As shown, the laptop is currently in a closed state, or in other words, the hinge mechanism is in a closed state.

[0099] The torque of the hinge mechanism is provided by damping force, which can also be called friction. During the opening of a laptop, the lower the damping force, the better. During the closing process, to prevent the laptop from automatically closing under the weight of the screen assembly and potentially damaging the device, a larger damping force is needed through the hinge mechanism to balance the weight of the screen assembly. A magnetic mechanism is usually installed between the screen assembly and the main unit, allowing them to close completely after the laptop is closed. This makes opening the laptop more difficult.

[0100] To address the aforementioned issues, embodiments of this application provide a rotating shaft mechanism that allows the rotating shaft mechanism to open effortlessly but close effortfully, thereby achieving the effect of easy opening and heavy closing of the rotating shaft mechanism.

[0101] Figure 3 This is a schematic diagram of a rotating shaft mechanism provided in an embodiment of this application.

[0102] Figure 4a and Figure 4b This is a schematic diagram of a first support provided in an embodiment of this application. Figure 4c yes Figure 4a A schematic cross-sectional view of section AA in the diagram.

[0103] Figure 5a This is a schematic diagram of a torque mechanism provided in an embodiment of this application.

[0104] Figure 5b and Figure 5c yes Figure 5a A schematic exploded view of the torque mechanism shown.

[0105] like Figure 3 As shown, the pivot mechanism 100 includes a first support 110, which includes a first cylinder 111, and is used to be fixedly connected to a first body. It also includes a second support 120, which includes a second cylinder 121, and is used to be fixedly connected to a second body. The first support 110 can be used to connect to a screen assembly, and the second support 120 can be used to connect to a host assembly. Typically, the host assembly connected to the second support 120 is placed on a desktop, and the second support 120 can remain stationary. The user can rotate the screen assembly to rotate the first support 110 around the torque mechanism 140 to turn the device on or off.

[0106] like Figures 5a-5c As shown, the rotating shaft mechanism 100 also includes a first shaft column 130 extending along a first direction. In the first direction, the first shaft column 130 includes a first column 131 and a second column 132 arranged axially. The first cylinder 111 and the second cylinder 121 are arranged along the first direction. The first column 131 is located in the first cylinder 111. The first cylinder 111 includes a first end 111a and a second end 111b that are opposite each other along the first direction. The first end 111a is the end that is close to the second cylinder 121, and the second end 111b is the end that is away from the second cylinder 121.

[0107] Combination Figures 3-5a The first column 131 is located in the first cylinder 111, and the second column 132 is located in the second cylinder 121.

[0108] Still Figures 5a-5c As shown, the rotating shaft mechanism 100 also includes a torque mechanism 140. The torque mechanism 140 includes a first concave cam 141, a second concave cam 142, a first elastic mechanism 143 and a first nut 144 sequentially sleeved on the first column 131. The first elastic mechanism 143 is configured to undergo elastic deformation along a first direction, which is the axial direction of the rotating shaft mechanism 100, i.e., the direction shown by the y-axis in the figure.

[0109] like Figure 4cAs shown, the first concave cam 141 is fixedly connected to the inner wall of the first cylinder 111. Alternatively, the first concave cam 141 and the first support 110 are integrally formed. The first concave cam 141 is located on the inner side of the first end 111a of the first cylinder 111 along the first direction, or on the side of the first end 111a near the second end 111b.

[0110] Based on the above technical solution, since the first concave cam 141 is fixedly connected to the first cylinder 111, the strength of the first concave cam 141 can be improved, the outer diameter of the first concave cam 141 can be reduced, the size of the rotating shaft mechanism 100 can be reduced, and the rotating shaft mechanism 100 can independently realize the rotation opening and closing function without being connected to the housing, thereby facilitating the assembly and disassembly process between the rotating shaft mechanism 100 and the housing.

[0111] In some possible implementations, the first concave cam 141 and the side facing the second concave cam 142 include a first protrusion 1411 and a first recess 1412, the first protrusion 1411 and the first recess 1412 being connected by an extended first curved surface 1413; the side of the second concave cam 142 facing the first concave cam 141 includes a second protrusion 1421 and a second recess 1422, the second protrusion 1421 and the second recess 1422 being connected by an extended second curved surface 1423.

[0112] Figure 6 This is a schematic diagram of a second concave cam 142 provided in an embodiment of this application.

[0113] Combination Figure 4c as well as Figure 6 The first concave cam 141 includes a first protrusion 1411, a first recess 1412 and a first curved surface 1413, and the second concave cam 142 includes a second protrusion 1421, a second recess 1422 and a second curved surface 1423.

[0114] When the rotating shaft mechanism 100 is in the open state, the first protrusion 1411 is located in the second recess 1422, the second protrusion 1421 is located in the first recess 1412, the first curved surface 1413 and the second curved surface 1423 are in contact, the first elastic mechanism 143 is in the relaxed state, and the first concave cam 141 and the second concave cam 142 can maintain a meshing connection when in the open state.

[0115] When the rotating shaft mechanism 100 is in the closed state, the first protrusion 1411 abuts against the second protrusion 1421, the first recess 1412 and the second recess 1422 move away from each other, the first curved surface 1413 and the second curved surface 1423 move away from each other, and the second concave cam 142 moves away from the first concave cam 141 in the axial direction. The first elastic mechanism 143 is under pressure and is in a state of compression deformation, providing elastic force along the first direction. This part of the elastic force can be regarded as a pre-pressure, so that when the rotating shaft mechanism 100 is opened, the second concave cam 142 tends to move closer to the first concave cam 141 in the first direction.

[0116] During the transition of the rotating shaft mechanism 100 from the closed state to the open state, the elastic force in the first elastic mechanism 143 is released, providing a force in the first direction for the second concave cam 142 to move closer to the first concave cam 141. The first protrusion 1411 and the second protrusion 1421 move away from each other from the contact state. The first protrusion 1411 enters the second curved surface 1423 from the position close to the second protrusion 1421 and rotates along the second curved surface 1423 towards the second concave portion 1422. The second concave cam 142 gradually approaches the first concave cam 141, which is equivalent to the first concave cam 141 going downhill along the curved surface of the second concave cam 142. The resistance between the first concave cam 141 and the second concave cam 142 is small, so it is not difficult to open the rotating shaft mechanism 100.

[0117] During the process of the rotating shaft mechanism 100 changing from the open state to the closed state, the first protrusion 1411 of the first concave cam 141 rotates along the second curved surface 1423 between the second protrusion 1421 and the second concave portion 1422. The first protrusion 1411 moves closer to the second concave portion 1422 from the second protrusion 1421, and the first concave cam 141 gradually moves closer to the second concave cam 142. This is equivalent to the first concave cam 141 moving uphill along the curved surface of the second concave cam 142. The resistance between the first concave cam 141 and the second concave cam 142 is relatively large, so it is relatively difficult to open the rotating shaft mechanism 100.

[0118] During the opening process of the rotating shaft mechanism 100, under the pre-pressure provided by the first elastic mechanism 143, the first concave cam 141 slopes down the curved surface of the second concave cam 142. The resistance between the first concave cam 141 and the second concave cam 142 is small, so opening the rotating shaft mechanism 100 is effortless. During the closing process of the rotating shaft mechanism 100, the first concave cam 141 slopes up the curved surface of the second concave cam 142. This process provides greater resistance, so closing the rotating shaft mechanism 100 requires more effort. Thus, the effect of easy opening and heavy closing is achieved during the closing process of the rotating shaft mechanism 100.

[0119] In some possible implementations, the first elastic mechanism 143 includes a disc spring or a spring, which may be a disc spring assembly consisting of multiple disc springs.

[0120] like Figure 5b As shown, the first elastic mechanism 143 can be a spring.

[0121] In some possible implementations, the first elastic mechanism 143 and the second concave cam 142 are further provided with a first gasket 147, which abuts against the first elastic mechanism 143 and the second concave cam 142 respectively.

[0122] like Figure 5b As shown, a first shim 147 is provided between the second concave cam 142 and the first elastic mechanism 143. The second concave cam 142 has a protruding structure on the side near the first shim 147, and the first shim 147 has a recessed structure that matches the shape of the protrusion. The protruding structure of the second concave cam 142 is inserted into the recessed structure of the first shim 147.

[0123] It should be noted that during the opening or closing process of the rotating shaft mechanism 100, the various components sleeved on the first shaft column 130 can rotate around the axial direction of the first shaft column 130 and move along the first direction.

[0124] The first shim 147 is located between the second concave cam 142 and the first elastic mechanism 143. It can fill the axial gap between the second concave cam 142 and the first elastic mechanism 143, prevent the second concave cam 142 from moving in the axial direction or at an angle other than the first direction, improve the fit of each component in the rotating shaft mechanism 100, and help the stability of the rotating shaft mechanism when it rotates.

[0125] In some possible implementations, the first gasket 147 can be made of a metallic material. For example, it could be steel.

[0126] In some possible implementations, the first end 111a includes a first stop 1112, which is located on the outer side of the first end 111a in a first direction, or on the side of the first end 111a away from the second end 111b. A first limiting groove 1211 is provided on the side of the second cylinder 121 near the first end 111a, and the first limiting groove 1211 corresponds to the first stop 1112. During rotation of the first support 110, the first stop 1112 can move within the first limiting groove 1211. When the first support 110 rotates to a certain angle, the first stop 1112 abuts against the inner wall of the first limiting groove 1211, causing the first support 110 to stop rotating at that angle.

[0127] Figure 7This is a schematic diagram of a second support 120 provided in an embodiment of this application.

[0128] Combination Figure 4b as well as Figure 7 As shown, a first stop portion 1112 is provided at the first end 111a, and a first limiting groove 1211 is provided on the side of the second cylinder 121 near the first end 111a. The shape of the first stop portion 1112 can be an arc-shaped protrusion, and the first limiting groove 1211 can be an arc-shaped limiting groove.

[0129] Based on the above technical solution, the cooperation between the first stop part 1112 and the first limiting groove 1211 allows the first support 110 to be suspended at the position when it is rotated open to the maximum angle, and not to continue to rotate to a larger angle, which is beneficial to improving the stability of the rotating shaft structure after it is opened.

[0130] Figure 8 This is a schematic diagram of another rotating shaft mechanism provided in an embodiment of this application.

[0131] Figure 9a , Figure 9b and Figure 9c This is a schematic diagram of another first support provided in an embodiment of this application. Figure 9d yes Figure 9a A schematic cross-sectional view of section BB.

[0132] Figure 10a This is a schematic diagram of another torque mechanism provided in an embodiment of this application. Figure 10b and Figure 10c yes Figure 10a A schematic exploded view of the torque mechanism shown.

[0133] like Figures 10a-10c As shown, with Figure 5a Compared to the torque mechanism 140 shown, the torque mechanism 140 also includes a third concave cam 145 and a fourth concave cam 146 located between the first elastic mechanism 143 and the first nut 144. The fourth concave cam 146 includes a second anti-sway rod 1461 extending toward the first end 111a.

[0134] like Figure 9c As shown, the second end 111b is provided with a second countersunk hole 1111, and the second anti-sway rod 1461 is located in the second countersunk hole 1111, so that the first support 110 drives the fourth concave cam 146 to rotate around the first axis column.

[0135] The following describes the concave cams, taking the third concave cam 145 and the fourth concave cam 146 as examples. Each concave cam has a protrusion and a recess, and adjacent concave cams can be meshed together. For example, the third concave cam 145 has a protrusion and a recess on the side near the fourth concave cam 146, and the fourth concave cam 146 has a protrusion and a recess on the side near the third concave cam 145. The protrusion of the third concave cam 145 abuts against the recess of the fourth concave cam 146, and the recess of the third concave cam 145 abuts against the protrusion of the fourth concave cam 146, so that when one concave cam rotates, the other concave cam can be driven to rotate under the action of friction.

[0136] The protrusions and recesses on one side of the concave cam can be arranged in an alternating ring, and the recesses and protrusions between adjacent concave cams mesh with each other.

[0137] It is understood that inside the first cylinder 111, the first concave cam 141 and the second concave cam 142 are meshed together, and the third concave cam 145 and the fourth concave cam 146 are meshed together. A first elastic mechanism 143 is provided between the second concave cam 142 and the third concave cam 145.

[0138] The first nut 144 and the first column can be connected by threads.

[0139] The torque is provided by the first elastic mechanism 143 and the first nut 144. Since the second anti-sway rod 1461 of the fourth concave cam 146 is located in the second countersunk hole 1111 of the first cylinder 111, the fourth concave cam 146 will rotate with the rotation of the first support 110 during the rotation of the first cylinder 111. Since the first concave cam 141 and the first support 110 are fixedly connected, the first concave cam 141 will also rotate in this case, so that the first concave cam 141 and the second concave cam 142 will rub against each other to generate torque.

[0140] Based on the above technical solution, a concave cam is fixedly installed inside the first support 110. This not only improves the strength of the concave cam but also reduces its outer diameter. Furthermore, the torque mechanism 140 is shielded by the first cylinder 111 of the first support 110. This achieves the shielding, assembly, and disassembly of the torque mechanism 140 with fewer parts and lower cost, and also reduces the size of the rotating shaft mechanism 100.

[0141] like Figure 10b As shown, the first elastic mechanism 143 is a disc spring assembly composed of multiple disc springs.

[0142] A disc spring, also known as a disc-shaped spring, is a conical, disc-shaped elastic element made of metal. Its conical shape stores energy through axial compression deformation and releases potential energy to maintain pressure or sealing when the load changes. When subjected to axial load, the disc spring undergoes elastic deformation, with internal stress decreasing from the inside out, achieving a low-stroke, high-compensation-force effect.

[0143] Figure 11 This is a schematic diagram of another rotating shaft mechanism provided in an embodiment of this application.

[0144] Figure 12a , Figure 12b This is a schematic diagram of another first support 110 provided in the embodiments of this application.

[0145] Figure 13a and Figure 13b This is a schematic diagram of another first support 110 and torsion mechanism 140 provided in the embodiments of this application.

[0146] Figure 14a This is a schematic diagram of another torque mechanism 140 provided in the embodiments of this application. Figure 14b yes Figure 14a A schematic exploded view of the torque mechanism 140 shown. Figure 14d yes Figure 14a A schematic cross-sectional view of section CC.

[0147] Figure 14c This is a schematic exploded view of the first overrunning clutch 151 provided in the embodiments of this application.

[0148] Compared to the rotating shaft mechanism shown in Figure 4, Figure 14a The torque mechanism 140 shown also includes a first overrunning clutch 151, which is sleeved on the second column 132. Figure 13b and Figure 14b As shown, the first overrunning clutch 151 includes a first anti-sway bar 1511 extending toward a first end 111a. The first end 111a also includes a first countersunk hole 1113. The first anti-sway bar 1511 is located in the first countersunk hole 1113, so that the first support 110 drives the first overrunning clutch 151 to rotate around the first shaft column 130.

[0149] The torque of the torque mechanism 140 is provided by the first overrunning clutch 151, the concave cam, and the first elastic mechanism 143. The first elastic mechanism 143 and the first nut 144 provide preload. During the rotation of the first cylinder 111, the first concave cam 141 rotates along with the first cylinder 111, and the rotation of the first cylinder 111 also drives the first overrunning clutch 151 to rotate. The first concave cam 141 and the second concave cam 142 rub against each other, thereby generating torque.

[0150] Figure 14c This is a schematic diagram of the first overrunning clutch 151 provided in an embodiment of this application.

[0151] The structure of the first overrunning clutch 151 is as follows: Figure 14c As shown, the clutch includes a clutch sleeve 1512 and a first retaining ring 1513, balls 1514, a ball cage 1515, a wave spring 1516, a damping rotor 1517, and a second retaining ring 1518 located within the clutch sleeve 1512. A non-Newtonian fluid is disposed between the damping rotor 1517 and the clutch sleeve 1512. The balls 1514 can be axially extending cylindrical structures, and there are multiple balls 1514. The ball cage 1515 includes multiple receiving spaces for accommodating the multiple balls 1514.

[0152] The torque of the first overrunning clutch 151 is mainly generated through the damping rotor 1517 and the non-Newtonian fluid rotational friction between the damping rotor 1517 and the clutch sleeve 1512. During the opening process of the rotating shaft mechanism 100, as the clutch sleeve 1512 rotates counterclockwise, the gap between the clutch sleeve 1512 and the ball 1514 increases, and the ball 1514 moves towards a larger space between the clutch sleeve 1512 and the ball cage 1515. At this time, the ball 1514 is not in contact with the first shaft column 130, and less force is required to open it. During the closing process of the rotating shaft mechanism 100, as the clutch sleeve 1512 rotates clockwise, the gap between the clutch sleeve 1512 and the ball 1514 decreases, and the ball 1514 moves towards a smaller space between the clutch sleeve 1512 and the ball cage 1515. At this time, the ball 1514 is in contact with the first shaft column 130. The first shaft column 130, the ball 1514, and the clutch sleeve 1512 are relatively fixed by friction. At this time, the rotation of the damping rotor 1517 will be subject to the frictional resistance of non-Newtonian fluid, thereby generating torque during the closing process of the rotating shaft mechanism 100. Closing is more difficult, achieving the effect of light opening and heavy closing.

[0153] Figure 15 This is a schematic diagram of another rotating shaft mechanism provided in an embodiment of this application.

[0154] Figure 16a and Figure 16b This is a schematic diagram of another first support and torsion mechanism provided in the embodiments of this application.

[0155] Figure 17a and Figure 17b This is a schematic diagram of another first support provided in an embodiment of this application.

[0156] Figure 18a and Figure 18bThis is a schematic diagram of a torsion spring assembly provided in an embodiment of this application.

[0157] Compared to the rotating shaft mechanism 100 shown in Figure 4, Figure 16a The torque mechanism 140 shown also includes a torsion spring assembly 152, which is sleeved on the second column 132. Figure 16a , Figure 16b , Figure 18a and Figure 18b The torsion spring assembly 152 includes a torsion spring body 1521 and a support portion 1522. The support portion 1522 is sleeved on the second column 132, and the torsion spring body 1521 is sleeved on the support portion 1522. The support portion 1522 and the second column 132 are fixedly connected so that the torsion spring body 1521 can rotate around the support portion 1522.

[0158] like Figure 18a and Figure 18b As shown, the torsion spring body 1521 includes a torsion portion 1521c, a first lever arm portion 1521a, and a second lever arm portion 1521b. The first lever arm portion 1521a and the second lever arm portion 1521b are respectively located on both sides of the torsion portion 1521c along a first direction. The first lever arm portion 1521a extends along the first direction toward the side away from the first end 111a, and the second lever arm portion 1521b extends toward the side close to the first end 111a.

[0159] The support portion 1522 includes a first limiting portion 1522a, and a first lever arm portion 1521a is located in the first limiting portion 1522a.

[0160] like Figure 16b and Figure 17b As shown, the first end portion 111a includes a first countersunk hole 1113, and the second lever arm portion 1521b is located in the first countersunk hole 1113, so that the first support 110 drives the torsion spring body 1521 to rotate around the support portion 1522.

[0161] The first lever arm 1521a and the second lever arm 1521b can each be a cylindrical lever arm. The first limiting part 1522a can be a groove corresponding to the shape of the first lever arm 1521a, in which the first lever arm 1521a is located and serves as a limiting part.

[0162] In some possible implementations, the first countersunk hole 1113 may be provided on the first stop portion 1112.

[0163] Still Figure 17b As shown, the first countersunk hole 1113 is located on the first stop portion 1112.

[0164] Since the first lever arm 1521a of the torsion spring is located in the first limiting part 1522a of the support part 1522, and the second lever arm 1521b of the torsion spring is located in the first countersunk hole 1113 of the first cylinder 111, when the rotating shaft mechanism 100 is in the open state, the torsion spring is in the initial state. The initial state of the torsion spring can refer to the state in which the first lever arm 1521a and the second lever arm 1521b are aligned along the first direction, that is, the torsion spring can be in a state without force in this case, and the torsion force of the torsion spring is minimal. When the rotating shaft mechanism 100 starts to rotate, the first lever arm 1521a remains stationary in the first limiting part 1522a, and the second lever arm is in the first countersunk hole 1113. As the first cylinder 111 rotates, the torsion spring twists during the process of the rotating shaft mechanism 100 changing from the open state to the closed state, and the torsion force of the torsion spring gradually increases.

[0165] Figure 19a This is a schematic diagram of another torque mechanism 140 provided in the embodiments of this application. Figure 19b , Figure 19c yes Figure 19a A schematic exploded view of the torque mechanism 140 shown.

[0166] Another portion of the torque of the torque mechanism 140 is provided by the frictional force generated between the first concave cam 141 and the second concave cam 142. Since the second anti-sway rod 1461 of the fourth concave cam 146 is located in the second countersunk hole 1111 of the first support 110, the fourth concave cam 146 will rotate with the first support 110 during the rotation of the first support 110. Since the first concave cam 141 is fixedly connected to the first support 110, the first concave cam 141 will also rotate in this case, causing mutual friction between the first concave cam 141 and the second concave cam 142 to generate torque.

[0167] In some possible implementations, the second support 120 includes a second cylinder 121. A first limiting groove 1211 is provided on the side of the second cylinder 121 closest to the first cylinder 111, and the first limiting groove 1211 corresponds to a first stop portion 1112. During rotation of the first support 110, the first stop portion 1112 can rotate within the first limiting groove 1211. When the first support 110 rotates to a certain angle, the first stop portion 1112 abuts against the inner wall of the first limiting groove 1211, causing the first support 110 to stop rotating at that angle.

[0168] During the opening of the rotating shaft mechanism 100, the torque generated by the torsion spring assembly 152 is in the opposite direction to the torque generated between the first concave cam 141 and the second concave cam 142, and the two torques cancel each other out. During the closing of the rotating shaft mechanism 100, the torque generated by the torsion spring is in the same direction as the torque generated between the first concave cam 141 and the second concave cam 142, and the two torques are superimposed, thereby achieving the effect of light opening and heavy closing.

[0169] Figure 20 This is a schematic diagram of another rotating shaft mechanism provided in an embodiment of this application.

[0170] Figure 21a and Figure 21b These are schematic diagrams of a third support frame provided in the embodiments of this application.

[0171] like Figure 20 As shown, the pivot mechanism 200 includes a third support 210, which includes a third cylinder 211, and is used for fixed connection with the first body. It also includes a fourth support 220, which includes a fourth cylinder 221, and is used for fixed connection with the second body. The third support 210 can be used to connect to a screen assembly, and the fourth support 220 can be used to connect to a host assembly. Typically, the host assembly connected to the fourth support 220 is placed on a desktop, and the fourth support 220 can remain stationary. The user can rotate the screen assembly to cause the third support 210 to rotate around the torque mechanism 240 to open or close the device.

[0172] Figure 22a This is a schematic diagram of another torque mechanism 240 provided in the embodiments of this application. Figure 22b and Figure 22c yes Figure 22a A schematic exploded view of the torque mechanism 240 shown.

[0173] The rotating shaft mechanism 200 also includes a second shaft column 230 extending along a first direction. In the first direction, the second shaft column 230 includes a third column 231, a fourth column 232 and a fifth column 233. The third cylinder 211 and the fourth cylinder 221 are arranged along the first direction.

[0174] In some possible implementations, the pivot mechanism 200 also includes a support 250 for supporting the torque mechanism 240, and the support 250 is fixedly connected to the third support 210.

[0175] Based on the above technical solution, the support frame can shield the torque mechanism from external impacts, and the support frame can rotate together with the third support frame, which can improve the reliability of the torque mechanism during use.

[0176] like Figures 22a-22c As shown, the rotating shaft mechanism 200 also includes a torque mechanism 240, which includes a fifth concave cam 241, a sixth concave cam 242, a third elastic mechanism 243 and a second nut 244 sleeved on the third column 231, and a first friction part 245, a fourth elastic mechanism 246 and a third nut 247 sleeved on the fifth column 233.

[0177] The fifth concave cam 241 includes a third anti-sway bar 2411 extending toward the fourth column 232, and the third support 210 includes a third countersunk hole 2101. The third anti-sway bar 2411 is located in the third countersunk hole 2101, so that the third support 210 drives the fifth concave cam 241 to rotate around the second axis column 230.

[0178] In some possible implementations, the first friction part 245 includes a seventh concave cam 245a and an eighth concave cam 245b. The seventh concave cam 245a includes a fourth anti-sway bar 245a1 extending toward the fourth column 232. The third support 210 also includes a fourth countersunk hole 2102. The fourth anti-sway bar 245a1 is located in the fourth countersunk hole 2102, so that the third support 210 drives the seventh concave cam 245a to rotate around the second axis column 230.

[0179] Combination Figure 21a , Figure 21b The third support 210 includes a third countersunk hole 2101 and a fourth countersunk hole 2102. The third countersunk hole 2101 is located on the side of the third support 210 near the fifth concave cam 241, and the fourth countersunk hole 2102 is located on the side of the third support 210 near the seventh concave cam 245a. The third anti-sway rod 2411 is located in the third countersunk hole 2101, and the fourth anti-sway rod 2451 is located in the fourth countersunk hole 2102, so that the third support 210 drives the fifth concave cam 241 and the seventh concave cam 245a to rotate around the second axis column 230.

[0180] During rotation, the third support 210, due to the third anti-sway rod 2411 of the sixth concave cam 242 being located in the fourth countersunk hole 2102 and the fourth anti-sway rod 245a1 of the seventh concave cam 245a being located in the fourth countersunk hole, can drive the sixth concave cam 242 and the seventh concave cam 245a to rotate. Because the fifth concave cam 241 meshes with the sixth concave cam 242, and the seventh concave cam 245a meshes with the eighth concave cam 245b, torque is generated by friction between the sixth concave cam 242 and the fifth concave cam 241 during rotation, and torque is also generated by friction between the seventh concave cam 245a and the eighth concave cam 245b during rotation.

[0181] In some possible implementations, a first friction plate 248 is also provided between the fifth concave cam 241 and the third support 210, and the first friction plate 248 abuts against the fifth concave cam 241 and the third support 210 respectively.

[0182] The first friction plate 248 can increase the smooth-short torque of the rotating shaft mechanism 200, reduce the smooth-short torque required between the fifth concave cam 241 and the sixth concave cam 242, and between the seventh concave cam 245a and the eighth concave cam 245b, thereby reducing the outer diameter of the concave cams and thus reducing the size of the rotating shaft mechanism 200. Under the premise that the rotating shaft mechanism 200 provides the same torque, adding the first friction plate 248 can ensure a smaller cam ramp angle and reduce cam R-angle wear.

[0183] Figure 23 This is a schematic diagram of another rotating shaft mechanism provided in an embodiment of this application.

[0184] Figure 24a and Figure 24b This is a schematic diagram of another third support provided in an embodiment of this application.

[0185] Figure 25a This is a schematic diagram of another torque mechanism provided in an embodiment of this application. Figure 25b and Figure 25c They are Figure 25a A schematic exploded view of the torque mechanism shown.

[0186] and Figures 22a-22c Compared to the torque mechanism 240 shown, Figures 24a-25c The first friction part 245 in the torque mechanism 240 shown includes alternating moving friction plates 245c and fixed friction plates 245d. The fixed friction plates 245d are fixedly connected to the second shaft column 230. The moving friction plates 245c include an extension 245c1 extending toward the third support 210. The third support 210 includes a fifth countersunk hole 2103. The extension 245c1 is located in the fifth countersunk hole 2103, so that the third support 210 drives the moving friction plates 245c to rotate around the second shaft column 230. The adjacent moving friction plates 245c and fixed friction plates 245d rotate relative to each other, generating friction and providing the torque required for the rotation of the shaft mechanism 200.

[0187] The number of dynamic friction plates 245c and fixed friction plates 245d can be multiple.

[0188] By increasing the number of alternating moving friction plates 245c and fixed friction plates 245d, the friction force that the friction section 245 can provide can be increased, thereby providing the torque for the rotation of the shaft mechanism 200, reducing the torque required for the smooth section of the fifth concave cam 241 and the sixth concave cam 242, thereby reducing the size of the concave cams, and thus reducing the size of the shaft mechanism 200.

[0189] The embodiments of this application also provide a device, including a first body, a second body, and any of the rotating shaft mechanisms provided in the embodiments of this application, wherein the first body is fixedly connected to a first support frame, and the second body is fixedly connected to a second support frame.

[0190] The embodiments of this application also provide a device, including a first body, a second body, and any of the rotating shaft mechanisms provided in the embodiments of this application, wherein the first body is fixedly connected to a third support frame, and the second body is fixedly connected to a fourth support frame.

[0191] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotating shaft mechanism for connecting a first body and a second body of a device, characterized in that, include: A first support (110) includes a first cylinder (111) and is used to be fixedly connected to the first body. The second support (120) includes a second cylinder (121) and is used to be fixedly connected to the second body. A first central column (130) extending along a first direction, the first central column (130) including an axially arranged first column (131) and a second column (132) in the first direction, the first cylinder (111) and the second cylinder (121) being arranged along the first direction, the first column (131) being located in the first cylinder (111), the first cylinder (111) including a first end (111a) and a second end (111b) opposite to each other along the first direction, the first end (111a) being the end closer to the second cylinder (121), and the second end (111b) being the end away from the second cylinder (121); The torque mechanism (140) includes a first concave cam (141), a second concave cam (142), a first elastic mechanism (143), and a first nut (144) sleeved on the first column (131). The first elastic mechanism (143) is configured to be elastically deformable along the first direction, which is the axial direction of the shaft mechanism (100). The first concave cam (141) is integrally formed with the inner wall of the first cylinder (111), and the second column (132) is located in the second cylinder (121).

2. The rotating shaft mechanism according to claim 1, characterized in that, The torque mechanism (140) further includes a first overrunning clutch (151) sleeved on the second column (132); The first overrunning clutch (151) includes a first anti-sway bar (1511) extending toward the first end (111a), the first end (111a) also including a first countersunk hole (1113), the first anti-sway bar (1511) being located in the first countersunk hole (1113) such that the first support (110) drives the first overrunning clutch (151) to rotate about the first shaft column (130).

3. The rotating shaft mechanism according to claim 1, characterized in that, The torque mechanism (140) further includes a torsion spring assembly (152) sleeved on the second column (132); The torsion spring assembly (152) includes a torsion spring body (1521) and a support part (1522). The support part (1522) is sleeved on the second column (132), and the torsion spring body (1521) is sleeved on the support part (1522). The support part (1522) and the second column (132) are fixedly connected so that the torsion spring body (1521) can rotate around the support part (1522). The torsion spring body (1521) includes a first lever arm (1521a), a second lever arm (1521b), and a torque portion (1521c). The first lever arm (1521a) and the second lever arm (1521b) are respectively located on both sides of the torque portion (1521c) along the first direction. The first lever arm (1521a) extends along the first direction toward the side away from the first end (111a), and the second lever arm (1521b) extends toward the side close to the first end (111a). The support portion (1522) includes a first limiting portion (1522a), and the first lever portion (1521a) is located in the first limiting portion (1522a); The first end portion (111a) includes a first countersunk hole (1113), and the second lever portion (1521b) is located in the first countersunk hole (1113) so that the first support (110) drives the torsion spring body (1521) to rotate around the support portion (1522).

4. The rotating shaft mechanism according to any one of claims 1-3, characterized in that, The first concave cam (141) includes a first protrusion (1411) and a first recess (1412) on the side facing the second concave cam (142), and the first protrusion (1411) and the first recess (1412) are connected by an extended first curved surface (1413); the second concave cam (142) includes a second protrusion (1421) and a second recess (1422) on the side facing the first concave cam (141), and the second protrusion (1421) and the second recess (1422) are connected by an extended second curved surface (1423).

5. The rotating shaft mechanism according to any one of claims 1-4, characterized in that, The torque mechanism (140) further includes a third concave cam (145) and a fourth concave cam (146) located between the first elastic mechanism (143) and the first nut (144), the fourth concave cam (146) including a second anti-sway rod (1461) extending toward the first end (111a); The second end (111b) is provided with a second countersunk hole (1111), and the second anti-sway rod (1461) is located in the second countersunk hole (1111) so that the first support (110) drives the fourth concave cam (146) to rotate around the first axis column (130).

6. The rotating shaft mechanism according to any one of claims 1-5, characterized in that, The first elastic mechanism (143) includes a disc spring or a spring.

7. The rotating shaft mechanism according to any one of claims 1-6, characterized in that, The first end (111a) also includes a first stop (1112), which is located on the side of the first end (111a) away from the second end (111b). The second cylinder (121) is provided with a first limiting groove (1211) on the side near the first end (111a) so that during the rotation of the first support (110) around the first axis column (130), the first stop (1112) moves in the first limiting groove (1211) and abuts against the inner wall of the first limiting groove (1211).

8. The rotating shaft mechanism according to any one of claims 1-7, characterized in that, A first gasket (147) is provided between the first elastic mechanism (143) and the second concave cam (142), and the first gasket (147) abuts against the first elastic mechanism (143) and the second concave cam (142) respectively.

9. A rotating shaft mechanism (200) for connecting a first body and a second body of a device, characterized in that, include: The third support (210) includes a third cylinder (211) and is used to be fixedly connected to the first body. The fourth support (220) includes a fourth cylinder (221) and is used to be fixedly connected to the second body; A second axial column (230) extending along a first direction, wherein the second axial column (230) includes a third column (231), a fourth column (232) and a fifth column (233) arranged axially, the third cylinder (211) and the fourth cylinder (221) being sleeved on the fourth column (232), the third cylinder (211) and the fourth cylinder (221) being arranged along the first direction; The torque mechanism (240) includes a fifth concave cam (241), a sixth concave cam (242), a third elastic mechanism (243), and a second nut (244) sleeved on the third column (231), and also includes a first friction part (245), a fourth elastic mechanism (246), and a third nut (247) sleeved on the fifth column (233). The third elastic mechanism (243) and the fourth elastic mechanism (246) are respectively configured to be able to undergo elastic deformation along the first direction, which is the axial direction of the rotating shaft mechanism (200). The fifth concave cam (241) includes a third anti-sway bar (2411) extending toward the fourth column (232), and the third support (210) includes a third countersunk hole (2101). The third anti-sway bar (2411) is located in the third countersunk hole (2101) so that the third support (210) drives the fifth concave cam (241) to rotate around the second axis column (230).

10. The rotating shaft mechanism according to claim 9, characterized in that, The first friction part (245) includes a seventh concave cam (245a) and an eighth concave cam (245b). The seventh concave cam (245a) includes a fourth anti-sway rod (245a1) extending toward the fourth column (232). The third support (210) also includes a fourth countersunk hole (2102). The fourth anti-sway rod (245a1) is located in the fourth countersunk hole (2102) so that the third support (210) drives the seventh concave cam (245a) to rotate around the second axis column (230).

11. The rotating shaft mechanism according to claim 9, characterized in that, The first friction part (245) includes alternating moving friction plates (245c) and fixed friction plates (245d). The fixed friction plates (245d) are fixedly connected to the second shaft column (230). The moving friction plate (245c) includes an extension (245c1) extending toward the third support (210). The third support (210) includes a fifth countersunk hole (2103). The extension (245c1) is located in the fifth countersunk hole (2103) so that the third support (210) drives the moving friction plate (245c) to rotate around the second shaft column (230).

12. The rotating shaft mechanism according to any one of claims 9-11, characterized in that, A first friction plate (248) is also provided between the fifth concave cam (241) and the third support (210), and the first friction plate (248) abuts against the fifth concave cam (241) and the third support (210) respectively.

13. The rotating shaft mechanism according to any one of claims 9-12, characterized in that, The rotating shaft mechanism (200) further includes a support frame (250) for supporting the torque mechanism (240), and the support frame (250) is fixedly connected to the third support frame (210).

14. A device, characterized in that, It includes a first body, a second body, and a rotating shaft mechanism as described in any one of claims 1-8, wherein the first body is fixedly connected to the first support frame, and the second body is fixedly connected to the second support frame.

15. A device, characterized in that, It includes a first body, a second body, and a rotating shaft mechanism as described in any one of claims 9-13, wherein the first body is fixedly connected to the third support frame, and the second body is fixedly connected to the fourth support frame.

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