Shaft mechanism and electronic equipment

Abstract

The embodiment of the present application provides a rotating shaft mechanism and an electronic device, wherein the rotating shaft mechanism includes a rotating shaft, a sleeve assembly, a driving device and a bracket, wherein the rotating shaft can be fixedly connected to the first body of the electronic device, the bracket can be fixedly connected to the second body of the electronic device, the sleeves in the sleeve assembly are respectively connected to the rotating shaft and the driving device, and the motor of the driving device can provide torque for the rotating shaft to rotate. When the electronic device needs to be opened and closed automatically, the output shaft of the motor rotates, which can drive the sleeve and the rotating shaft to rotate to drive the first body to rotate. When the electronic device needs to be opened and closed manually, the output shaft of the motor does not rotate, and an external force acts on the first body to drive the rotating shaft to rotate, and the friction between the rotating shaft and the sleeve provides torque. In this way, the user can flexibly operate the electronic device between manual and automatic, which improves the user experience; during the automatic opening and closing process, the rotating shaft rotates together with the sleeve, which reduces the friction between the rotating shaft and the sleeve, and greatly improves the service life of the rotating shaft.

Description

Technical Field

[0001] The present application relates to the field of electronic equipment, and more specifically, to a rotating shaft mechanism and electronic equipment. Background Art

[0002] Generally, electronic devices with opening and closing functions need to be opened and closed manually. For example, a laptop computer requires the user to open and close it manually, which is not conducive to user experience. Moreover, the hinges of such electronic devices will wear out after long-term and frequent use, reducing the service life of the hinges. Summary of the invention

[0003] An embodiment of the present application provides a hinge mechanism and an electronic device equipped with the hinge mechanism. The hinge mechanism has a manual opening and closing function and an automatic opening and closing kinetic energy, which can greatly improve the user experience. In the automatic opening and closing process, the friction between the hinge and the sleeve can be effectively reduced, thereby increasing the service life of the hinge.

[0004] In a first aspect, a shaft mechanism is provided, which is used to connect a first body and a second body of an electronic device, and is characterized in that it comprises: a shaft, a shaft sleeve assembly, a driving device and a bracket, wherein the shaft can be fixedly connected to the first body, and the bracket can be fixedly connected to the second body;

[0005] The rotating shaft, the shaft sleeve assembly and the driving device are arranged in sequence along the axial direction of the rotating shaft, and the bracket is connected to the shaft sleeve assembly;

[0006] The sleeve assembly includes a sleeve, and the sleeve includes a first part and a second part. The first part is sleeved on the rotating shaft, and the second part is fixedly connected to the driving device. The driving device includes a motor. When the output shaft of the motor rotates, the driving device can drive the sleeve and the rotating shaft to rotate, so as to drive the first body to rotate toward or away from the second body through the rotating shaft. When the output shaft of the motor does not rotate, the first body can drive the rotating shaft to rotate, and the rotating shaft can form a friction fit with the sleeve, so that the first body rotates toward or away from the second body.

[0007] The rotating shaft mechanism provided in the embodiment of the present application includes a rotating shaft, a sleeve assembly, a driving device and a bracket. The rotating shaft can be fixedly connected to the first body, the bracket can be fixedly connected to the second body, the first part of the sleeve in the sleeve assembly is sleeved on the rotating shaft, the second part of the sleeve is fixedly connected to the driving device, and the motor of the driving device can provide a torque for rotating the rotating shaft. When the electronic device needs to be opened and closed automatically, the torque generated by the motor can drive the sleeve and the rotating shaft to rotate, so as to drive the first body to rotate in a direction close to or away from the second body through the rotating shaft, so as to realize the opening and closing of the electronic device; when the electronic device needs to be opened and closed manually, the motor is stationary, and the external force acting on the first body can drive the rotating shaft to rotate, and the rotating shaft can form a friction fit with the sleeve to generate torque, so that the first body rotates in a direction close to or away from the second body. In this way, the shaft, sleeve assembly and drive device of the shaft mechanism cooperate with each other, so that the electronic device has both manual opening and closing and automatic opening and closing functions. The user can flexibly operate the electronic device between manual and automatic to achieve the opening and closing of the electronic device, which greatly improves the user experience; in addition, during the automatic opening and closing process, the drive device drives the shaft and the sleeve to rotate together, which reduces the friction between the shaft and the sleeve and greatly improves the service life of the shaft.

[0008] In combination with the first aspect, in some implementations of the first aspect, the driving device includes two linked motors, and the two motors are arranged sequentially along a direction parallel to the axial direction of the rotating shaft.

[0009] The rotating shaft mechanism provided in the embodiment of the present application has a plurality of motors arranged in a driving device along a first direction parallel to the axial direction of the rotating shaft. Each motor has a small radial dimension and occupies a small space between the first body and the second body, which can effectively reduce the overall thickness of the electronic device and realize a lightweight and thin design of the electronic device.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the driving device also includes a transmission assembly, and the two motors are fixedly connected to the second part through the transmission assembly, so that the two motors drive the sleeve and the rotating shaft to rotate through the transmission assembly.

[0011] The rotating shaft mechanism provided in the embodiment of the present application has a transmission assembly and two motors arranged in a driving device, and the two motors are fixedly connected to the shaft sleeve through the transmission assembly. The two motors are arranged in sequence along a first direction parallel to the axial direction of the rotating shaft. Not only can the lightweight design of the electronic device be realized, but the two motors are also connected to the transmission assembly to realize the connection with the shaft sleeve, that is, the two motors are not coaxially arranged with the rotating shaft. Firstly, the complexity of the connection relationship between the two motors can be simplified through the transmission assembly. Secondly, the structure is relatively beautiful. Thirdly, the problem of low conversion efficiency of the motor far away from the rotating shaft in the coaxial setting can be avoided.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the driving device also includes a reducer arranged parallel to and side by side with the two motors, the reducer is arranged between the transmission assembly and the bushing assembly, and the two motors are fixedly connected to the second part through the transmission assembly and the reducer in turn, so that the two motors drive the bushing and the rotating shaft to rotate through the transmission assembly and the reducer.

[0013] The rotating shaft mechanism provided in the embodiment of the present application is provided with a transmission assembly, a reducer and two motors in the driving device, and the two motors are connected to the shaft sleeve through the transmission assembly and the reducer in turn. This can not only realize the lightweight design of the electronic device, simplify the complexity of the connection relationship between the two motors, improve the aesthetics of the rotating shaft mechanism, and improve the conversion efficiency of the motor, but also the setting of the reducer can reduce the rotation speed of the rotating shaft and the shaft sleeve, increase the torque output by the driving device, so as to increase the torque of the driving shaft sleeve and the rotating shaft, which is beneficial to the automatic opening and closing of the electronic device.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the second part is provided with a hole having a cross-section with a D-shaped structure, and the output shaft of the reducer includes a shaft segment matching the hole, and the shaft segment is inserted into the hole to fix the output shaft on the second part.

[0015] The rotating shaft mechanism provided in the embodiment of the present application is provided with a hole with a D-shaped cross-section on the second part of the sleeve, and the output shaft of the reducer is provided with a shaft segment matching the hole, and the shaft segment is inserted into the hole. The cooperation between the two can well realize the fixation of the sleeve and the output shaft of the reducer and reduce the slippage between the output shaft and the sleeve. In addition, this fixing method has a simple structure and is easy to process.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the transmission assembly includes a second gear and two first gears, wherein:

[0017] The two first gears correspond to the two motors one by one, the first gears are sleeved on the output shafts of the corresponding motors, the two first gears are meshed with the second gears, and the output shafts of the second gears are connected to the reducer.

[0018] In combination with the first aspect, in certain implementations of the first aspect, the transmission assembly further includes a third gear disposed between the first gear and the second gear, and the third gear meshes with the two first gears and with the second gear.

[0019] The rotating shaft mechanism provided in the embodiment of the present application, in which the first gear sleeved on the output shaft of the motor meshes with the second gear through the third gear, can reduce the radial size of the transmission assembly, thereby reducing the radial size of the entire rotating shaft mechanism, which is beneficial to the lightweight design of the electronic device.

[0020] In combination with the first aspect, in certain implementations of the first aspect, the rotating shaft mechanism also includes a reducer fixing member arranged between the bushing assembly and the reducer, the reducer fixing member includes a connected annular structure and a connecting structure, the connecting structure is fixedly connected to the bracket, and the annular structure is sleeved on the second part of the bushing and fixedly connected to the reducer.

[0021] In the rotating shaft mechanism provided in the embodiment of the present application, in the structure where the driving device includes a reducer, a reducer fixing piece is further provided between the bushing and the reducer, and the reducer fixing piece is fixedly connected to both the bracket and the reducer. Since the bracket is stationary, the stability of the reducer fixing piece can be ensured. Therefore, the reducer can be fixed by the reducer fixing piece to limit the movement of the reducer in the circumferential direction.

[0022] In combination with the first aspect, in certain implementations of the first aspect, a groove is provided on the outer side wall of the annular structure, an extension portion cooperating with the groove is provided on the outer shell of the reducer, and the extension portion is inserted into the groove to fix the reducer.

[0023] The rotating shaft mechanism provided in the embodiment of the present application can fix the reducer on the reducer fixing member through the cooperation between the groove on the reducer fixing member and the extension part on the reducer, and the structure of the cooperation between the groove and the extension part is simple and easy to implement.

[0024] In combination with the first aspect, in certain implementations of the first aspect, a radial dimension of the reducer is smaller than a radial dimension of the motor.

[0025] In the rotating shaft mechanism provided in the embodiment of the present application, the radial dimension of the reducer is smaller than the radial dimension of the motor, so that the area near the reducer in the second body can form an arc surface, meeting the aesthetic requirements of the electronic device.

[0026] In combination with the first aspect, in certain implementations of the first aspect, the bushing assembly further includes a rolling bearing sleeved on the bushing, and the rolling bearing is fixedly connected to the bracket.

[0027] The rotating shaft mechanism provided in the embodiment of the present application is further provided with a rolling bearing sleeved on the sleeve on the sleeve assembly. The rolling bearing not only serves as a supporting structure of the sleeve, but also, because the inner ring of the rolling bearing rotates together with the sleeve, the friction resistance on the sleeve during the rotation process can be reduced, thereby improving the torque transmission efficiency of the driving device.

[0028] In combination with the first aspect, in some implementations of the first aspect, a connecting portion is provided on the driving device, and the connecting portion is fixedly connected to any one of the first body and the second body.

[0029] In combination with the first aspect, in some implementations of the first aspect, the connecting portion is fixedly connected to the second body.

[0030] In a second aspect, an electronic device is provided, characterized in that it includes a first body, a second body and a hinge mechanism as described in any aspect of the first aspect, the first body is fixedly connected to the hinge of the hinge mechanism, and the second body is fixedly connected to the bracket of the hinge mechanism.

[0031] The electronic device provided in the embodiment of the present application includes a first body, a rotating shaft mechanism and a second body, the rotating shaft mechanism includes a rotating shaft, a sleeve assembly, a driving device and a bracket, the rotating shaft is fixedly connected to the first body, the bracket is fixedly connected to the second body, the first part of the sleeve in the sleeve assembly is sleeved on the rotating shaft, the second part of the sleeve is fixedly connected to the driving device, and the motor of the driving device can provide torque for rotating the rotating shaft. When the electronic device needs to be opened and closed automatically, the torque generated by the motor can drive the sleeve and the rotating shaft to rotate, so as to drive the first body to rotate in a direction close to or away from the second body through the rotating shaft, so as to realize the opening and closing of the electronic device; when the electronic device needs to be opened and closed manually, the motor is stationary, and the external force acting on the first body can drive the rotating shaft to rotate, and the rotating shaft can form a friction fit with the sleeve to generate torque. In this way, the shaft, sleeve assembly and drive device of the shaft mechanism cooperate with each other, so that the electronic device has both manual opening and closing and automatic opening and closing functions. The user can flexibly operate the electronic device between manual and automatic to achieve the opening and closing of the electronic device, which greatly improves the user experience; in addition, during the automatic opening and closing process, the drive device drives the shaft to rotate together with the sleeve, which reduces the friction between the shaft and the sleeve and greatly improves the service life of the shaft.

[0032] In combination with the second aspect, in some implementations of the second aspect, the electronic device is a laptop computer, the first body is a screen assembly, and the second body is a host assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic exploded diagram of a laptop computer provided in an embodiment of the present application.

[0034] Figure 2 It is a schematic assembly diagram of a laptop computer provided in an embodiment of the present application.

[0035] Figure 3 It is a schematic assembly diagram of the rotating shaft mechanism provided in an embodiment of the present application.

[0036] Figure 4 It is a schematic exploded diagram of the rotating shaft mechanism provided in an embodiment of the present application.

[0037] Figure 5 It is a schematic cross-sectional view of the rotating shaft mechanism provided in an embodiment of the present application.

[0038] Figure 6 It is a schematic cross-sectional structural diagram of the bracket provided in the embodiment of the present application.

[0039] Figure 7 and Figure 8 It is a schematic cross-sectional structural diagram of the rotating shaft provided in an embodiment of the present application.

[0040] Fig. 9 and Fig.10 It is a schematic structural diagram of the shaft sleeve assembly provided in an embodiment of the present application.

[0041] Fig.11 It is a schematic assembly diagram of the rotating shaft, the shaft sleeve assembly and the bracket provided in the embodiment of the present application.

[0042] Fig.12 It is a schematic assembly diagram of the driving device provided in the embodiment of the present application.

[0043] Fig.13 It is a schematic exploded diagram of the driving device provided in an embodiment of the present application.

[0044] Fig.14 It is a schematic cross-sectional view of the driving device provided in an embodiment of the present application.

[0045] Fig.15 It is a schematic structural diagram of the reducer fixing member provided in an embodiment of the present application.

[0046] Description of Reference Numerals

[0047] Electronic device 1, hinge mechanism 10, screen assembly 20, host assembly 30.

[0048] The bracket 11 , the supporting plate 111 , the protruding portion 112 , and the connecting portion 113 .

[0049] The rotating shaft 12 , the fixing structure 121 , the torque structure 122 , and the stop structure 123 .

[0050] The sleeve assembly 13, the sleeve 131, the first portion 1311 of the sleeve 131, the second portion 1312 of the sleeve 131, the first hole 1313 in the first portion 1311, the second hole 1314 in the second portion 1312, the rolling bearing 132,

[0051] Driving device 14, motor 141, housing 1411 of motor 141, output shaft 1412 of motor 141, pin 1413 extending out of housing 1412, reducer 142, housing 1421 of reducer 142, output shaft 1422 of reducer 142, extension portion 1423 on housing 1421, reduction gear set 1424, transmission assembly 143, housing 1431 of transmission assembly 143, connecting portion 1432 on housing 1431, first gear 1433, second gear 1434, third gear 1435, output shaft 1436 of transmission assembly.

[0052] Reducer fixing part 15 , annular structure 151 , connecting structure 152 , groove 1512 . DETAILED DESCRIPTION

[0053] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0054] In response to the problem that most electronic devices can only be opened and closed manually and the shafts frequently wear out, the embodiments of the present application provide a shaft mechanism and an electronic device equipped with the shaft mechanism. The shaft mechanism has a manual opening and closing function and automatic opening and closing kinetic energy, and during the automatic opening and closing process, it can effectively reduce the friction between the shaft and the sleeve, thereby increasing the service life of the shaft.

[0055] The hinge mechanism of the present application can be applied to any device with opening and closing performance. For example, the device can be a laptop computer, a foldable mobile phone, etc.

[0056] In order to facilitate the description of the application scenarios of the hinge mechanism, taking a laptop computer as an example, a brief explanation of the application of the hinge mechanism in the device is given.

[0057] refer to Figure 1 and Figure 2 The laptop computer 1 includes a hinge mechanism 10, a screen assembly 20 and a host assembly 30. The screen assembly 20 and the host assembly 30 are rotatably connected through the hinge mechanism 10. Specifically, one end of the hinge mechanism 10 is fixedly connected to the screen assembly 20, and the other end is fixedly connected to the host assembly 30. When the laptop computer 1 is opened, the screen assembly 20 rotates in a direction away from the host assembly 30, and the torsion provided by the hinge mechanism 10 enables the laptop computer 1 to maintain a stable open state. When the laptop computer 1 is closed, the screen assembly 20 rotates in a direction close to the host assembly 30, and the torsion provided by the hinge mechanism 10 enables the screen assembly 20 to fall freely.

[0058] It is understood that the electronic device may be provided with one or more rotating shaft mechanisms, and the embodiments of the present application do not impose any limitation thereon. For example, the electronic device may be provided with one, two, three or more rotating shaft mechanisms. Figure 1 The illustrated notebook computer 1 is provided with two hinge mechanisms 10 , for example, along the axis direction of the hinge mechanisms 10 , the two hinge mechanisms 10 are symmetrically arranged.

[0059] For ease of description, this application defines two parts of an electronic device that can be opened and closed, namely, a first body and a second body. The first body can be a component connected to the shaft in the shaft mechanism, and the second body is a component connected to the bracket in the shaft mechanism. When the shaft rotates, the bracket does not rotate. The shaft can drive the first body to rotate toward or away from the second body to achieve the opening and closing of the electronic device. Taking a laptop as an example, the first body can be a screen assembly 20, and the second body can be a host assembly 30.

[0060] The following, combined Figures 3 to 15 , the shaft mechanism of the embodiment of the present application is described in detail.

[0061] refer to Figure 3 to Figure 4 The rotating shaft mechanism 10 includes a bracket 11, a rotating shaft 12, a shaft sleeve assembly 13 and a driving device 14. The bracket 11 can be fixedly connected to the second body (for example, the host assembly 30) of the electronic device 2, and the rotating shaft 12 can be fixedly connected to the first body (for example, the screen assembly 20) of the electronic device 1. The rotating shaft 12, the shaft sleeve assembly 13 and the driving device 14 are sequentially arranged along the axial direction of the rotating shaft 12, and the bracket 11 is connected to the shaft sleeve assembly 13. Figure 4 The shaft 12 includes a torsion structure 122, the sleeve assembly 13 includes a sleeve 131, and the sleeve 131 includes a first portion 1311 and a second portion 1312. Figure 5 The first part 1311 of the sleeve 131 is sleeved on the torque structure 122 of the rotating shaft 12, and the second part 1312 is fixedly connected to the driving device 14, which will be described in detail below. The driving device 14 can provide torque. Specifically, the driving device 14 includes a motor 141. The motor 141 can provide torque. When the electronic device 1 needs to be automatically opened and closed, the output shaft of the motor 141 rotates, which can drive the sleeve 131 fixedly connected to the driving device 14 and drive the rotating shaft 12 sleeved in the sleeve 131 to rotate, so as to drive the first body to rotate in a direction close to or away from the second body through the rotating shaft 12, thereby realizing the automatic opening and closing of the electronic device 1. When the electronic device 1 needs to be opened and closed manually, the output shaft of the motor 141 does not rotate, the motor 141 is in a stationary state, an external force acts on the first body, the rotating shaft 12 rotates, and the sleeve 131 does not rotate. During the rotation process, a friction fit is formed between the rotating shaft 12 and the sleeve 131, and the friction fit between the two generates a torsional force (or a damping force) to provide a torque during the rotation process, so that the first body rotates toward or away from the second body, thereby realizing the manual opening and closing of the electronic device 1.

[0062] It should be noted that the rotation of the output shaft of the motor 141 indicates that the driving device 14 is in a working state, and the non-rotation of the output shaft of the motor 141 indicates that the driving device 14 is in a non-working state.

[0063] It should be understood that in the process of automatically opening and closing the electronic device, the torque provided by the motor 141 of the drive device 14 is the main force (or power source), which is equivalent to replacing the external force acting on the first body in the manual opening and closing of the electronic device 1. At least one rotating shaft mechanism 10 is installed on the electronic device 1, and one rotating shaft mechanism 10 provides a driving device 14. The sum of the torques provided by at least one driving device 14 in at least one rotating shaft mechanism 10 is greater than the torque generated by the gravity of the first body during the rotation of the first body. In this way, the driving device 14 can drive the rotating shaft 12 to drive the first body to rotate. In the process of manually opening and closing the electronic device, the motor 141 of the drive device 14 is stationary, the external force applied by the user to the first body is the main force, and the torque generated between the rotating shaft 12 and the sleeve 131 is the resistance to ensure the opening and closing of the electronic device.

[0064] The rotating shaft mechanism provided in the embodiment of the present application includes a rotating shaft, a sleeve assembly, a driving device and a bracket. The rotating shaft can be fixedly connected to the first body, the bracket can be fixedly connected to the second body, the first part of the sleeve in the sleeve assembly is sleeved on the rotating shaft, the second part of the sleeve is fixedly connected to the driving device, and the motor of the driving device can provide a torque for rotating the rotating shaft. When the electronic device needs to be opened and closed automatically, the torque generated by the motor can drive the sleeve and the rotating shaft to rotate, so as to drive the first body to rotate in a direction close to or away from the second body through the rotating shaft, so as to realize the opening and closing of the electronic device; when the electronic device needs to be opened and closed manually, the motor is stationary, and the external force acting on the first body can drive the rotating shaft to rotate, and the rotating shaft can form a friction fit with the sleeve to generate torque, so that the first body rotates in a direction close to or away from the second body. In this way, the shaft, sleeve assembly and drive device of the shaft mechanism cooperate with each other, so that the electronic device has both manual opening and closing and automatic opening and closing functions. The user can flexibly operate the electronic device between manual and automatic to achieve the opening and closing of the electronic device, which greatly improves the user experience; in addition, during the automatic opening and closing process, the drive device drives the shaft and the sleeve to rotate together, which reduces the friction between the shaft and the sleeve and greatly improves the service life of the shaft.

[0065] refer to Figure 6 The bracket 11 includes a support plate 111, and the support plate 111 can be fixedly connected to the second body. For example, a fastening hole 1111 is provided on the support plate 111, and a fastener passes through the fastening hole 1111 and is fixedly connected to the second body to achieve a fixed connection between the bracket 11 and the second body. For example, the fastener can be a rivet, and the fixed connection between the bracket 11 and the second body is achieved by riveting.

[0066] In some embodiments, continue to refer to Figure 6 The bracket 11 further includes a protruding portion 112 connected to the support plate 111, and a notch 1121 is provided on the protruding portion 112. The notch 1121 can be aligned with the stop structure 123 (such as Figure 7 and Figure 8 As shown in the figure), the rotation angle of the rotating shaft 12 is limited, which will be described in detail later.

[0067] In some other embodiments, continue to refer to Figure 6 The bracket 11 also includes a connecting member 113 disposed on the support plate 111. The connecting member 113 can be fixedly connected to the rolling bearing 132 of the rotating shaft assembly 13 to fix the sleeve assembly 13 on the bracket 11, which will be described in detail later.

[0068] refer to Figure 7 and Figure 8 The end of the rotating shaft 12 is configured as a fixed structure 121, which can be fixedly connected to the first body. For example, the fixed structure 121 and the first body can be connected by riveting.

[0069] In the embodiment where the notch 1121 is provided on the bracket 11, Figure 7 and Figure 8 The rotating shaft 12 is provided with Figure 6 The notch 1121 shown is matched with a stopper structure 123, and the stopper structure 123 can rotate within the opening range of the notch 1121. Fig.11 When the rotating shaft 12 rotates to a certain angle, the stop structure 123 can be pressed against the area of ​​the protruding portion 112 of the bracket 11 adjacent to the notch 1121 to limit the rotation angle of the rotating shaft 12. In this way, the maximum rotation angle of the rotating shaft 12 can be limited by the cooperation between the notch 1121 on the bracket 11 and the stop structure 123 on the rotating shaft 12, so as to avoid the first body from rotating too much and damaging the components in the electronic device.

[0070] In some embodiments, continue to refer to Figure 7 and Figure 8 The rotating shaft 12 includes a torsion structure 122 . Exemplarily, a stop structure 123 may be disposed on the torsion structure 122 .

[0071] refer to Fig. 9 and Fig.10 The shaft sleeve 131 of the shaft sleeve assembly 13 includes a first portion 1311 and a second portion 1312. The first portion 1311 can cooperate with the torsion structure 122 to provide torsion, wherein the first portion 1311 is provided with a first hole 1313 (such as Fig. 9As shown), the second part 1312 is fixedly connected to the driving device 14 (detailed description will be given later). It should be understood that there is no contact between the part of the driving device 14 connected to the second part 1312 and the torsion structure 122, and they are arranged at intervals to ensure that during the automatic opening and closing process, the rotation of the torsion structure 122 will not affect the static state of the driving device 14. The first part 1311 of the sleeve 131 is sleeved on the torsion structure 122 and serves as a supporting structure for the rotating shaft 12. An interference fit is adopted between the torsion structure 122 and the sleeve 131. During the manual opening and closing of the electronic device, the rotating shaft 12 rotates and the bracket 11 does not move. The friction fit formed between the first part 1311 of the sleeve 131 and the torsion structure 122 can provide torsion and generate torque. In addition, when the electronic device is in use, the torsion between the first part 1311 of the sleeve 131 and the torsion structure 122 can also make the first body in a relatively stable state.

[0072] In some embodiments, continue to refer to Fig. 9 and Fig.10 The sleeve assembly 13 further includes a rolling bearing 132, which is sleeved on the sleeve 131, and the inner ring of the rolling bearing 132 is interference fit with the sleeve 131. When the electronic device is automatically opened and closed, the driving device 14 drives the sleeve 131 to rotate and also drives the inner ring of the rolling bearing 132 to rotate together. In this way, the rolling bearing 132 is sleeved on the sleeve 131 and can serve as a supporting structure of the sleeve 131. Moreover, since the inner ring of the rolling bearing 132 can rotate together with the sleeve 131, the friction resistance on the sleeve during the rotation process can be reduced, and the torque transmission efficiency of the driving device 14 can be improved.

[0073] Continue to refer Fig.11 The outer ring of the rolling bearing 132 is fixedly connected to the connecting piece 113 of the bracket 11 to fix the sleeve assembly 13 on the bracket 11. For example, the connecting piece 113 and the rolling bearing 132 can be fixedly connected by welding. Of course, other fixed connection methods are also within the protection scope of the embodiment of the present application.

[0074] It should be understood that the embodiment of the present application does not impose any limitation on the number of rolling bearings 132, and the sleeve assembly 13 may include one, two, three, four or more rolling bearings 132. When the sleeve assembly 13 includes multiple rolling bearings 132, the multiple rolling bearings 132 are coaxially and spaced apart. For example, Fig. 9 and Fig.10Two rolling bearings 132 are shown, and the two rolling bearings 132 are respectively arranged at both ends of the sleeve 131, which can not only play a better supporting role, but also make the forces of the sleeve 131 and the rotating shaft 12 relatively balanced. For example, one rolling bearing 132 is arranged at the end of the first part 1311 of the sleeve 131 close to the rotating shaft 12, and the other rolling bearing 132 is arranged at the end of the second part 1312 of the bearing 131 close to the driving device 14. Correspondingly, the number of the connecting members 113 in the bracket 11 is the same as the number of the rolling bearings 132, and the connecting members 113 are fixedly connected to the corresponding rolling bearings 132.

[0075] refer to Fig.12 and Fig.13 The motor 141 of the driving device 14 provides torque, which can be transmitted to the sleeve 131. Since the first part 1311 of the sleeve 131 and the rotating shaft 12 are interference fit, the torque can drive the sleeve 131 to rotate and drive the rotating shaft 12 sleeved in the sleeve 131 to rotate, so as to automatically open and close the electronic device.

[0076] It should be noted that the motor 14 can be directly connected to the second part 1312 of the sleeve 131, or can be connected to the second part 1312 through other components. The present application embodiment does not impose any limitation on this, and the following embodiments will provide specific explanations.

[0077] If a motor 14 is installed in the driving device 14, while providing torque, the radial dimension of the single motor 141 will be relatively large, occupying a large space between the first body and the second body, which will increase the thickness of the electronic device and is not conducive to the lightweight design of the electronic device.

[0078] In order to realize the thin and light design of the electronic device, in some embodiments, the driving device 14 includes a plurality of motors 141, which are linked to each other and arranged in sequence along a first direction parallel to the axial direction of the rotating shaft 12. The plurality of motors 141 are combined to provide a torque output by the driving device 14 to drive the sleeve 131 and the rotating shaft 12 to rotate. For example, referring to 12 and Fig.13 The driving device 14 includes two linked motors 141, which are sequentially arranged along a first direction parallel to the axial direction of the rotating shaft 12. Taking the driving device 14 including two motors 141 as an example, if the torque provided by each motor 141 is the same, each motor provides half of the torque of the driving device 14, and the two motors 141 provide the total torque output by the driving device 14.

[0079] The rotating shaft mechanism provided in the embodiment of the present application has a plurality of motors arranged in a driving device along a first direction parallel to the axial direction of the rotating shaft. Each motor has a small radial dimension and occupies a small space between the first body and the second body, which can effectively reduce the overall thickness of the electronic device and realize a lightweight and thin design of the electronic device.

[0080] It should be understood that the plurality of motors 141 are sequentially arranged along a first direction parallel to the axial direction of the rotating shaft 12, which means that the plurality of motors 141 are arranged in parallel and coaxially, and specifically means that the output shafts 1412 (such as Fig.13 and Fig.14 In addition, multiple motors 141 can be coaxially arranged with the rotating shaft 12, for example, multiple motors 141 are connected in series, and multiple motors 141 can also be coaxially arranged with the rotating shaft 12, which is not limited in the embodiments of the present application. However, in general, in the embodiments where multiple motors 141 are coaxially arranged with the rotating shaft 12, a transmission assembly is required to transmit the torque of the motor 141 to the rotating shaft 12.

[0081] It should be noted that the coaxial arrangement of the two components (for example, the motor 141 and the rotating shaft 12, and between the two motors 141) mentioned in the embodiment of the present application means that the central axes of the two components are approximately located on the same straight line. Similarly, the non-coaxial arrangement of the two components means that the central axes of the two components are not located on the same straight line.

[0082] In the following, the example in which the driving device 14 includes two motors 141 is taken to explain other components that may be involved in the driving device 14 .

[0083] In some embodiments, continue to refer to Fig.12 and Fig.13 The driving device 14 further includes a transmission assembly 143, and the two motors 141 are fixedly connected to the second portion 1312 of the sleeve 131 through the transmission assembly 143, so that the two motors 141 drive the sleeve 131 and the rotating shaft 12 to rotate through the transmission assembly 143. In this embodiment, the two motors 141 are not coaxially arranged with the rotating shaft 12, and the two motors 141 are fixedly connected to the transmission assembly 143, and the transmission assembly 143 is fixedly connected to the second portion 1312 of the sleeve 131 directly or indirectly through other components.

[0084] refer to Fig.13 and Fig.14The motor 141 includes a housing 1411 and an output shaft 1412 extending out of the housing 1411, and the transmission assembly 143 includes a housing 1431 and a gear set disposed in the housing 1431, the gear set is fixedly connected to the output shaft 1412 of the motor 141, and the output shaft 1436 of the gear set is fixedly connected to the second portion 1312. It should be understood that in the embodiment in which the output shaft 1436 of the gear set of the transmission assembly 143 is fixedly connected to the second portion 1312, the drive device 143 may not include Figure 12 to Figure 14 The reducer 142 shown and the output shaft 1436 of the gear set of the transmission assembly 143 can be used as the output shaft of the driving device 14 and is directly fixedly connected to the second part 1312 of the sleeve 131.

[0085] Exemplarily, the transmission assembly 14 includes two first gears 1433, a second gear 1434 and a third gear 1435, one first gear 1433 corresponds to one motor 141, the output shaft 1412 of the motor 141 is sleeved on the first gear 1433, the two first gears 1433 are meshed with the third gear 1435, the third gear 1435 is meshed with the second gear 1434, the second gear 1434 is provided with an output shaft 1436, the output shaft 1436 is fixedly connected to the second part 1312 of the sleeve 131, so that the output shaft 1412 of the motor 141 drives the first gear 1433 to rotate, the first gear 1433 drives the second gear 1434 to rotate through the third gear 1435, and the output shaft 1436 of the second gear 1434 can drive the sleeve 131 and the rotating shaft 12 to rotate.

[0086] It should be understood that Fig.14 In the structure shown, the transmission assembly 143 includes a first gear 1433, a second gear 1434 and a third gear 1435, which can reduce the radial size of the transmission assembly 143 to reduce the radial size of the entire shaft mechanism, which is conducive to the thin and light design of the electronic device. If the thickness requirement of the electronic device is not high, the transmission assembly 143 can only be provided with two first gears 1433 and one second gear 1434, and the third gear 1435 is not required.

[0087] The rotating shaft mechanism provided in the embodiment of the present application has a transmission assembly and two motors arranged in a driving device, and the two motors are fixedly connected to the shaft sleeve through the transmission assembly. The two motors are arranged in sequence along a first direction parallel to the axial direction of the rotating shaft. Not only can the lightweight design of the electronic device be realized, but the two motors are also connected to the transmission assembly to realize the connection with the shaft sleeve, that is, the two motors are not coaxially arranged with the rotating shaft. Firstly, the complexity of the connection relationship between the two motors can be simplified through the transmission assembly. Secondly, the structure is relatively beautiful. Thirdly, the problem of low conversion efficiency of the motor far away from the rotating shaft in the coaxial setting can be avoided.

[0088] In order to prevent the rotation speed of the rotating shaft 12 and the sleeve 131 from being too high, which may lead to a reduction in the torque used to drive the rotating shaft 12 and the sleeve 131 or damage to the first body, it is necessary to limit the rotation speed of the rotating shaft 12 and the sleeve 131. Based on this, in some embodiments, continue to refer to Fig.12 and Fig.13 The driving device 14 further includes a reducer 142, which is arranged parallel to and in parallel with the two motors 141, and is arranged between the transmission assembly 143 and the shaft sleeve assembly 13. The two motors 14 are fixedly connected to the second portion 1312 of the shaft sleeve 131 through the transmission assembly 143 and the reducer 142 in sequence, so that the two motors 141 drive the shaft sleeve 131 and the rotating shaft 12 to rotate through the transmission assembly 143 and the reducer 142. In this embodiment, the rotating shaft 12, the reducer 142 and the transmission assembly 143 can be regarded as being coaxially arranged.

[0089] Continue to refer Fig.13 and Fig.14 The reducer 142 includes a housing 1421 and a reduction gear set 1424 disposed in the housing 1421. One end of the reduction gear set 1424 is sleeved with an output shaft 1436 of the transmission assembly 1431, and the other end of the reduction gear set 1424 is formed as an output shaft 1422 extending out of the housing 1421. Figure 5 , the output shaft 1422 of the reducer 142 is fixedly connected to the second portion 1312 of the sleeve 131. In this way, the output shaft 1412 of the motor 141 drives the first gear 1433 to rotate, the first gear 1433 drives the third gear 1435 to rotate through the second gear 1434, the output shaft 1436 of the third gear 1435 drives the reducer 142 to rotate, and the output shaft 1422 of the reducer 142 drives the sleeve 131 and the rotating shaft 12 to rotate.

[0090] The rotating shaft mechanism provided in the embodiment of the present application is provided with a transmission assembly, a reducer and two motors in the driving device, and the two motors are connected to the shaft sleeve through the transmission assembly and the reducer in turn. This can not only realize the lightweight design of the electronic device, simplify the complexity of the connection relationship between the two motors, improve the aesthetics of the rotating shaft mechanism, and improve the conversion efficiency of the motor, but also the setting of the reducer can reduce the rotation speed of the rotating shaft and the shaft sleeve, increase the torque output by the driving device, so as to increase the torque of the driving shaft sleeve and the rotating shaft, which is beneficial to the automatic opening and closing of the electronic device.

[0091] In some scenarios, for the sake of aesthetics, the outer shell of the second body may have a curved surface, especially in the area of ​​the second body close to the first body. To meet this requirement, in some embodiments, the radial dimension of the reducer 142 is smaller than the radial dimension of the motor 141, so that the area of ​​the second body close to the reducer 142 can form a curved surface to meet the aesthetic requirements.

[0092] Continue to refer Fig.13 The housing 1411 of the motor 141 is provided with a plurality of pins 1413 extending out of the housing 1411, and the pins 1413 are used to connect with wires, and the wires are connected with the main board provided in the second body to realize the electrical connection between the motor 141 and the main board. It can be understood that the main board is provided with a power supply unit, and the motor 141 can be electrically connected with the power supply unit to provide electric energy for the motor 141.

[0093] The rotation of the output shafts of the various components in the drive device 14 will affect the stability of the shaft mechanism. In order to stabilize the drive device 14 and the shaft mechanism, the drive device 14 can be fixedly connected to the first body or the second body. In some embodiments, the drive device 14 can be fixedly connected to the second body. For example, continue to refer to Fig.13 and Fig.14 A connecting portion 1432 is provided on the housing 1431 of the transmission assembly 143, and the connecting portion 1432 can be fixedly connected to the second body.

[0094] In the embodiment where the driving device 14 includes a reducer 142, a transmission assembly 143 and two motors 141, one end of the reducer 142 is connected to the motor 141 through the transmission assembly 143, and the output shaft 1422 formed at the other end is connected to the second portion 1312 of the sleeve 131. In the process of the motor 141 rotating, in order to avoid the phenomenon that the reducer 142 rotates in the circumferential direction, continue to refer to Figure 3 and Figure 4 The shaft mechanism 10 further includes a reducer fixing member 15 disposed between the shaft sleeve assembly 13 and the reducer 142 , and the reducer fixing member 15 is respectively connected to the second portion 1312 , the reducer 142 and the bracket 11 .

[0095] In some embodiments, reference Fig.15 The reducer fixing member 15 includes a connected annular structure 151 and a connecting structure 152, which are referred to together. Figure 5 The annular structure 151 of the reducer fixing member 15 is sleeved on the second part 1312 of the sleeve 131 to achieve connection with the sleeve 131, and the connecting structure 152 is fixedly connected to the bracket 11. For example, the connecting structure 152 is fixedly connected to the support plate 111 of the bracket 11, for example, the fixed connection between the connecting structure 152 and the support plate 111 can be achieved by riveting. It should be understood that since the reducer fixing member 15 is fixedly connected to the bracket 11, the reducer fixing member 15 will not rotate regardless of whether the sleeve 131 rotates. When the sleeve 131 rotates, the sleeve 131 can rotate relative to the reducer fixing member 15.

[0096] Continue to refer Fig.15 A groove 1512 is provided on the outer wall of the annular structure 151. Fig.13 and Fig.14 An extension portion 1423 matching the groove 1512 is provided on the housing 1421 of the reducer 142, and the extension portion 1423 can be inserted into the groove 1512. Since the reducer fixing member 15 is fixedly connected to the bracket 11, the stability of the reducer fixing member 15 can be ensured. Therefore, the reducer 142 can be fixed by the reducer fixing member 15 to limit the movement of the reducer 142 in the circumferential direction.

[0097] In the embodiment where the driving device 14 includes a reducer 142, a transmission assembly 143 and two motors 141, the output shaft 1422 of the reducer 142 is fixedly connected to the second portion 1312 of the sleeve 131, so as to drive the sleeve 131 to rotate when the output shaft 1422 rotates. In order to simply and better realize the connection between the sleeve 131 and the output shaft 1422 of the reducer 142, and to prevent the output shaft 1422 from slipping with the second portion 1312 of the sleeve 131 during rotation, in some embodiments, reference Fig.10 , a second hole 1314 with a D-shaped cross section is provided in the second part 1312 of the sleeve 1312, and correspondingly, the output shaft 1422 of the reducer 142 includes a shaft segment (not shown in the figure) matching the second hole 1314, the shaft segment having a D-shaped cross section, and the shaft segment is inserted into the second hole 1314. The hole with a D-shaped cross section matches the corresponding shaft segment, which can well realize the fixing of the sleeve and the output shaft of the reducer, reduce the slippage between the output shaft and the sleeve, and this fixing method has a simple structure.

[0098] Of course, the output shaft 1422 of the reducer 142 and the second part 1312 of the sleeve 131 can also be fixedly connected by other means. For example, a plurality of protrusions are provided on the side wall in the circumferential direction of the output shaft 1422, and grooves matching the protrusions are provided in the second part 1312. The protrusions and the grooves cooperate to achieve a fixed connection between the reducer 142 and the sleeve 131.

[0099] Below, with Figure 1 and Figure 2 As an example, the electronic device shown in the figure is equipped with two rotating shaft mechanisms. Figure 3 With reference to the related parts of the hinge mechanism shown in FIG15 , the principle of the hinge mechanism realizing automatic opening and closing and manual opening and closing of the electronic device is described in detail.

[0100] When the electronic device is opened and closed automatically, the torque provided by the driving device 14 is the main driving force, which needs to overcome the torque generated by the gravity of the first body during the rotation of the first body, so that the electronic device can be opened and closed. Exemplarily, the electronic device is equipped with two hinge mechanisms 10, and one hinge mechanism 10 includes a driving device 14. In this way, the electronic device has two driving devices 14. In order to automatically open and close the electronic device, the sum of the torques generated by the two driving devices 14 is greater than the torque generated by the gravity of the first body; in addition, assuming that the torque provided by each driving device 14 is the same, then one driving device 14 provides half of the torque generated by the gravity of the first body. In some embodiments, the driving device 14 includes multiple motors 141, and the sum of the torques provided to the driving device 14 by the multiple motors 141 is equal to half of the torque generated by the gravity of the first body.

[0101] Assuming that the weight of the first body is 360g, it is calculated that the torque generated by the gravity of the first body during the rotation of the first body is 4.56kgf*cm. The total torque provided by the two drive devices 14 is greater than 4.56kgf*cm, and is taken as 5kgf*cm. In this way, the torque provided by each drive device 14 is 2.5kgf*cm. When the electronic device is automatically opened and closed, the total torque generated by the two drive devices 14 is 5kgf*cm, which is greater than the torque 4.56kgf*cm generated by the gravity of the first body. Therefore, each drive device 14 can drive the corresponding sleeve 131 and the rotating shaft 12 to rotate to drive the first body to rotate. Take the example that the drive device 14 includes two motors 141, and one drive device 14 provides 2.5kgf*cm. Assuming that the torque provided by each motor 141 is the same, the torque provided by each motor 141 to the drive device 14 is 1.25kgf*cm.

[0102] When manually opening and closing the electronic device, the external force exerted by the user on the first body is the main force, and the drive device 14 needs to remain stationary. The torque formed as resistance by the friction fit between the rotating shaft 12 and the sleeve 131 is used to ensure the stable opening and closing of the electronic device. Generally, when the motor 141 in the drive device 14 is powered off, a self-locking torque will be generated to ensure that the motor 141 remains in a stable stationary state (or, in other words, to ensure that the output shaft of the motor 141 does not rotate). Similarly, in the embodiment of the present application, in order to ensure the stationary state of the motor 141, the self-locking torque of the motor 141 can be limited, and the sum of the self-locking torques of all the motors 141 in each drive device 14 is greater than the torque generated between the corresponding rotating shaft 12 and the sleeve 131. In this way, it can be ensured that during the rotation of the rotating shaft 12, the motor 141 in the corresponding drive device 14 can remain in a stable stationary state. In addition, the torque of the external force applied to the first body is greater than the torque between the rotating shaft 12 and the sleeve 131 and less than the sum of the self-locking torques of all motors 141 in the driving device 14, so that the driving device 14 and the sleeve 131 are both fixed, for example, the output shaft 1422 of the reducer 142 of the driving device 14 and the second part 1312 of the sleeve 131 are both fixed to realize manual opening and closing of the electronic device.

[0103] Assume that the driving device 14 in a rotating shaft mechanism includes two motors 141, the torque generated between the rotating shaft 12 and the sleeve 131 is 2.45kgf*cm, the self-locking torque of each motor 141 is 1.75kgf*cm, and the total self-locking torque of the two motors 141 is 3.5kgf*cm, which is greater than the torque 2.45kgf*cm generated between the rotating shaft 12 and the sleeve 131. Therefore, during the rotation of the rotating shaft 12, the motor 141 is stationary. In an embodiment in which the electronic device includes two rotating shaft mechanisms, the sum of the torques generated by the two rotating shafts 12 and the corresponding sleeves 131 is 7kgf*cm, and the sum of the self-locking torques generated by the four motors 141 is 4.9kgf*cm. When the torque generated by the external force acting on the first body is greater than 4.9kgf*cm and less than 7kgf*cm, the angle between the first body and the second body can be manually adjusted to realize manual opening and closing of the electronic device.

[0104] It can be understood that the external force acting on the first body is greater than the torque generated by the two rotating shaft mechanisms 10 within a certain range, and this range will not be very large. Therefore, we can select the motor 14 based on the calculated torque generated by the two rotating shaft mechanisms and based on empirical values, so that the self-locking torque provided by the motor 14 is not only greater than the torque generated by the rotating shaft mechanism 10 within a reasonable range, but also, when the external force acts on the first body, the self-locking torque is also greater than the torque generated by the gravity of the first body.

[0105] The above is a detailed description of the hinge mechanism of the embodiment of the present application. In addition, the embodiment of the present application also provides an electronic device. Exemplarily, the electronic device may be a laptop computer.

[0106] refer to Figure 1 and Figure 2 The electronic device 1 includes a hinge mechanism 10, a first body and a second body, wherein the first body is fixedly connected to a hinge 12 in the hinge mechanism 10, and the second body is fixedly connected to a bracket 11 of the hinge mechanism 10. The hinge mechanism 10 may be the above-mentioned Figures 3 to 15 The hinge mechanism of any of the corresponding embodiments may refer to the above description. In addition, in the embodiment of the electronic device 1 being a notebook computer, Figure 1 and Figure 2 The screen assembly 20 shown is an example of a first body. Figure 1 and Figure 2 The host assembly 30 shown is an example of a second body.

[0107] In the embodiment of the present application, a processor is provided in any one of the first body and the second body, and the processor is electrically connected to the motor 141, and is used to control the working state of the motor 141. For example, when the processor receives an external automatic start signal, the motor 141 can be controlled to be in a working state, that is, the motor 141 is controlled to be powered on to realize the automatic start function; for another example, when the processor receives an external automatic shutdown signal, the motor 141 can be controlled to be in a non-working state, that is, the motor 141 is controlled to be powered off to realize the automatic shutdown function. Exemplarily, the external automatic start signal or automatic shutdown signal can be a related input operation of the user to the electronic device 1.

[0108] In some embodiments, a button is provided in any one of the first body and the second body, and the button is electrically connected to the processor to identify the user's operation to control the working state of the motor 141. For example, if the electronic device 1 is in the open state, the user presses the button, the processor can recognize that the button operation is to automatically shut down the electronic device, and the processor will control the motor 141 to run in the reverse direction to drive the sleeve 131 and the shaft 12 to rotate in the reverse direction to drive the first body to rotate in the direction close to the second body; if the electronic device 1 is in the closed state, the user presses the button, the processor can recognize that the button operation is to automatically turn on the electronic device, and the processor will control the motor 141 to run forward to drive the sleeve 131 and the shaft 12 to rotate forward to drive the first body to rotate in the direction away from the second body. In this embodiment, the automatic opening signal or the automatic closing signal can be a button operation by the user.

[0109] In other embodiments, a voice recognizer is provided in any one of the first body and the second body for recognizing the voice command output by the user, and the voice recognizer is electrically connected to the processor to control the working state of the motor 1 according to the voice command recognized by the voice recognizer. Exemplarily, if the user outputs an instruction to close the first body, the voice recognizer receives and analyzes the voice command, and sends the recognition result to the processor, and the processor controls the motor 14 to run in the reverse direction according to the received recognition result, so that the shaft 12 and the sleeve 131 rotate in the reverse direction to drive the first body to rotate in the direction close to the second body. If the user outputs an instruction to open the first body, the voice recognizer receives and analyzes the voice command, and sends the recognition result to the processor, and the processor controls the motor 14 to run in the forward direction according to the received recognition result, so that the shaft 12 and the sleeve 131 rotate in the forward direction to drive the first body to rotate in the direction away from the second body. In this embodiment, the automatic opening signal or the automatic closing signal can be a voice command.

[0110] In order to improve the rotation accuracy of the rotating shaft mechanism, in some embodiments, an angle sensor may also be provided in the first body, and the processor is electrically connected to the angle sensor to control the working state of the motor 14 according to the detection result of the angle detector. That is, the processor can accurately determine the rotation position of the first body according to the real-time detection result of the angle detector for the angle between the first body and the second body, so as to avoid the first body from rotating too much or too little, which affects the use of the user. Exemplarily, the processor can determine whether the current position of the first body is the best angle position for the user, or whether it is the angle position preset by the user, whether it is necessary to continue to drive the first body to rotate, etc. through the real-time detection result of the angle detector. If the processor determines through the detection result that the current position of the first body is the best angle position for the user, the motor 141 can be controlled to be powered off, and the sleeve 131 and the rotating shaft 12 are no longer driven to rotate to drive the first body to rotate, and the electronic device 1 can be turned off manually or automatically later; if the processor determines through the detection result that the current position of the first body is not the best angle position for the user, the motor 141 can be controlled to continue to be in the working state, and the sleeve 131 and the rotating shaft 12 are continued to rotate to drive the first body to rotate.

[0111] It should be understood that Figures 1 to 15 The structures of the components in the electronic device and the hinge mechanism shown and the connection relationship between the components are only schematic illustrations, and any replaceable structure of components that play the same role as each component is within the protection scope of the embodiments of the present application. The relevant structure of each component will be described in detail below.

[0112] It should be understood that in the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connection", "fixed connection", and "contact" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above-mentioned various terms in the embodiments of the present application can be understood according to specific circumstances.

[0113] Exemplarily, for "connection", it can be various connection modes such as fixed connection, rotating connection, flexible connection, movable connection, one-piece molding, electrical connection, etc.; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal connection between two elements or the interaction relationship between two elements.

[0114] Exemplarily, for "fixed connection", one element can be directly or indirectly fixedly connected to another element; the fixed connection can include mechanical connection, welding, bonding and the like, wherein the mechanical connection can include riveting, bolting, threaded connection, key connection, snap connection, lock connection, plug-in and the like, and the bonding can include adhesive bonding and solvent bonding and the like.

[0115] Exemplarily, the interpretation of "contact" can be direct or indirect contact between one element and another element. In addition, the contact between the two elements described in the embodiments of the present application can be understood as contact within the allowable range of installation error, and there may be a very small gap caused by the installation error.

[0116] It should also be understood that the “parallel” described in the embodiments of the present application can be understood as “approximately parallel”.

[0117] It should also be understood that the orientation or positional relationship indicated by terms such as "center", "thickness", "up", "down", "inside", and "outside" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0118] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0119] In the embodiments of the present application, "at least one" refers to one or more, "more than one" refers to two or more, and "at least part of an element" refers to part or all of an element.

[0120] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A hinge mechanism for connecting a first body and a second body of an electronic device, characterized in that: include: A rotating shaft, a shaft sleeve assembly, a driving device and a bracket, wherein the rotating shaft can be fixedly connected to the first body, and the bracket can be fixedly connected to the second body; The rotating shaft, the shaft sleeve assembly and the driving device are arranged in sequence along the axial direction of the rotating shaft, and the bracket is connected to the shaft sleeve assembly; The shaft sleeve assembly includes a shaft sleeve, and the shaft sleeve includes a first part and a second part. The first part is sleeved on the rotating shaft, and the second part is fixedly connected to the driving device. The driving device includes a motor. When the output shaft of the motor rotates, the driving device can drive the shaft sleeve and the rotating shaft to rotate, so as to drive the first body to rotate toward or away from the second body through the rotating shaft. When the output shaft of the motor does not rotate, the first body can drive the rotating shaft to rotate, and the rotating shaft can form a friction fit with the shaft sleeve, so that the first body rotates toward or away from the second body. The driving device comprises two linked motors, which are arranged in sequence along a first direction parallel to the axial direction of the rotating shaft; The driving device also includes a transmission assembly, and the driving device also includes a reducer arranged parallel to and side by side with the two motors, the reducer is arranged between the transmission assembly and the shaft sleeve assembly, and the two motors are fixedly connected to the second part through the transmission assembly and the reducer in turn, so that the two motors drive the shaft sleeve and the rotating shaft to rotate through the transmission assembly and the reducer.

2. The rotating shaft mechanism according to claim 1, characterized in that: The second part is provided with a hole having a D-shaped cross section, and the output shaft of the reducer comprises a shaft segment matching the hole, and the shaft segment is inserted into the hole to fix the output shaft on the second part.

3. The rotating shaft mechanism according to claim 1 or 2, characterized in that: The transmission assembly includes a second gear and two first gears, wherein: The two first gears correspond to the two motors one by one, the first gears are sleeved on the output shafts of the corresponding motors, the two first gears are meshed with the second gears, and the output shafts of the second gears are connected to the reducer.

4. The rotating shaft mechanism according to claim 3, characterized in that: The transmission assembly further includes a third gear disposed between the first gear and the second gear, wherein the third gear meshes with the two first gears and meshes with the second gear.

5. The rotating shaft mechanism according to claim 1 or 2, characterized in that: The rotating shaft mechanism also includes a reducer fixing member arranged between the sleeve assembly and the reducer, and the reducer fixing member includes a connected annular structure and a connecting structure, the connecting structure is fixedly connected to the bracket, and the annular structure is sleeved on the second part of the sleeve and fixedly connected to the reducer.

6. The rotating shaft mechanism according to claim 5, characterized in that: A groove is arranged on the outer side wall of the annular structure, and an extension part cooperating with the groove is arranged on the outer shell of the reducer. The extension part is inserted into the groove to fix the reducer.

7. The rotating shaft mechanism according to claim 1 or 2, characterized in that: The radial dimension of the reducer is smaller than the radial dimension of the motor.

8. The rotating shaft mechanism according to claim 1 or 2, characterized in that: The rotating shaft mechanism also includes a rolling bearing sleeved on the shaft sleeve, and the rolling bearing is fixedly connected to the bracket.

9. The rotating shaft mechanism according to claim 1 or 2, characterized in that: The driving device is provided with a connecting portion, and the connecting portion is fixedly connected to any one of the first body and the second body.

10. An electronic device, characterized in that: It comprises a first body, a second body and a rotating shaft mechanism as claimed in any one of claims 1 to 9, wherein the first body is fixedly connected to the rotating shaft of the rotating shaft mechanism, and the second body is fixedly connected to the bracket of the rotating shaft mechanism.

11. The electronic device according to claim 10, characterized in that: The electronic device is a notebook computer, the first body is a screen component, and the second body is a host component.

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