Drive mechanism and electronic device

By designing a driving mechanism with a static torque greater than the torque torque, combined with worm gear and motor drive, the flexible movement of the laptop screen is realized in both automatic and manual ways, and the automatic driving mechanism is easily damaged and manual ways are inconvenient in the prior art. Problem, improving the stability and user experience of the device.

CN222208817UActive Publication Date: 2024-12-20LENOVO (BEIJING) LTD
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Patent Information

Application Number
CN202323670298.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-29
Publication Date
2024-12-20
Estimated Expiration
2033-12-29

AI Technical Summary

Technical Problem

The automatic driving mechanism of existing two-dimensional inverted laptops is easily damaged, and the manual method is not convenient enough, and lacks flexibility and practicality.

Method used

A driving mechanism is designed, including a first driving part and a first transmission assembly. By the fact that the static torque of the first driving part is greater than the torque torque of the transmission assembly, the flexible movement of the screen is realized in both automatic and manual ways, and the worm gear and worm structure is adopted. With motor drive, combined with sensor detection angle, the screen rotates smoothly and accurately in multiple directions.

Benefits of technology

It realizes flexible adjustment of the screen in multiple directions, improves user experience and device adaptability, avoids the problem of automatic method damage, provides manual substitution solutions, and enhances the stability and practicality of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a driving mechanism and electronic equipment. The driving mechanism comprises a first driving part and a first transmission assembly, the driving end of the first driving part is connected with the first transmission assembly, the first driving part is used for being connected with a keyboard, and the first transmission assembly can rotate in the first direction and is used for being connected with a screen; the static moment of the first driving part is larger than the torsional moment of the first transmission assembly, and the first direction is perpendicular to the operation face of the keyboard.
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Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a driving mechanism and an electronic equipment. Background Art

[0002] The two-dimensional rotation of the laptop includes the opening and closing of the screen and keyboard, and the flipping of the screen and keyboard. The two-dimensional rotation design enables users to adjust the keyboard and screen to a more natural and comfortable position when using it, reducing hand and shoulder fatigue and making it more flexible to use.

[0003] There are currently two ways of dual-dimensional reversal: one is manual, which requires a certain amount of force to rotate the screen when flipping and opening and closing; the other is automatic, which is achieved through components such as drive mechanisms and sensors. The information obtained by the sensors is used to control the operation of the drive mechanism to automatically adjust the position and angle of the screen.

[0004] However, the manual method is not convenient to use, and the automatic method is easy to damage. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a driving mechanism and an electronic device.

[0006] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0007] The first aspect of the present application provides a driving mechanism, comprising:

[0008] A first driving unit and a first transmission assembly; a driving end of the first driving unit is connected to the first transmission assembly, the first driving unit is used to connect to the keyboard, the first transmission assembly can rotate around a first direction, and the first transmission assembly is used to connect to the screen;

[0009] Wherein, the static torque of the first driving part is greater than the torsional torque of the first transmission component, and the first direction is perpendicular to the operating surface of the keyboard.

[0010] In some modified implementations of the first aspect of the present application, the first transmission assembly includes a transmission shaft, a worm wheel and a worm;

[0011] The driving end of the first driving part is rotationally connected to the worm, the worm is meshed with the worm wheel, the worm wheel is sleeved on the transmission shaft, and the transmission shaft is used to connect with the screen. The static torque of the first driving part is greater than the torsional torque of the transmission shaft, and the axial direction of the transmission shaft is consistent with the first direction.

[0012] In some embodiments, the driving mechanism further includes a cover and a base;

[0013] The worm gear is arranged between the base and the cover, the base is connected to the transmission shaft for rotation around the first direction, the base is connected to the cover, and both the cover and the base are used for fixed connection with the keyboard;

[0014] The first driving unit includes a first motor;

[0015] The first motor is disposed on the base, the first motor is rotationally connected to the worm, and the static torque of the first motor is greater than the torsional torque of the transmission shaft.

[0016] In some embodiments, further comprising a first sensor;

[0017] The first sensor is connected to the first transmission component, the first sensor is connected to the first driving unit signal, and the first sensor is used to detect the angle of rotation of the first transmission component around the first direction.

[0018] In some embodiments, the first transmission assembly further comprises a synchronous ring gear and a spur gear;

[0019] The synchronous gear ring is sleeved on the transmission shaft, the spur gear is meshed with the synchronous gear ring, the spur gear is used to rotate around the first direction and is connected to the base, and the first sensor is opposite to the spur gear along the first direction.

[0020] In some embodiments, the first transmission assembly further includes a limiter;

[0021] The limiting member is connected to the inner wall of the transmission shaft, and a portion of the limiting member extends out of the transmission shaft to form a limiting portion, and the worm gear is used to be arranged between the screen and the limiting portion.

[0022] In some embodiments, further comprising a second driving unit and a second transmission assembly;

[0023] The driving end of the second driving part is connected to the second transmission assembly, and the second driving part is connected to the first transmission assembly; the second transmission assembly can rotate around a second direction, and the second transmission assembly is used to connect to the screen;

[0024] Wherein, the static torque of the second driving part is greater than the torsional torque of the second transmission component, and the second direction is perpendicular to the first direction.

[0025] In some embodiments, further comprising a second sensor;

[0026] The second sensor is disposed on the second transmission component. The second sensor is connected to the second driving unit by signal. The second sensor is used to detect the angle of rotation of the second transmission component around the second direction.

[0027] In some embodiments, there are two second driving parts, and the two second driving parts are respectively disposed on both sides of the first transmission component along the second direction.

[0028] A second aspect of the present application provides an electronic device, including:

[0029] A keyboard, a screen and the driving mechanism described in the first aspect;

[0030] The first driving part of the driving mechanism is connected to the keyboard, the first transmission component of the driving mechanism is connected to the screen, and the keyboard and the screen have relative movement in at least one direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0032] Figure 1 The structure diagram of the electronic device of the present application is schematically shown;

[0033] Figure 2 The schematic diagram of the structure of the driving mechanism of the present application from a first viewing angle is shown schematically;

[0034] Figure 3 Schematically shows Figure 2 Sectional view at AA in the middle;

[0035] Figure 4 The exploded view of the first transmission assembly of the driving mechanism of the present application is schematically shown;

[0036] Figure 5 The schematic diagram of the structure of the driving mechanism of the present application from a second viewing angle is schematically shown;

[0037] Figure 6 Schematically shows Figure 5 A partial enlarged view of point D in the middle.

[0038] Description of Figure Numbers:

[0039] 1. First drive unit; 2. First transmission assembly; 21. Drive shaft; 22. Worm gear; 23. Worm; 24. Synchronous ring gear; 25. Spur gear; 26. Limiting piece; 27. Cam; 28. Bearing steel ball; 3. First sensor; 4. Cover; 5. Base; 6. Second drive unit; 7. Second transmission assembly; 71. Coupling; 72. Torque shaft; 73. Fixing plate; 8. Second sensor; 9. Connecting piece; 100. Drive mechanism; 200. Keyboard; 300. Screen; A. First direction; B. Second direction. DETAILED DESCRIPTION

[0040] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0041] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

[0042] Example 1

[0043] like Figures 1 to 4 As shown, Embodiment 1 of the present application provides a driving mechanism, comprising:

[0044] A first driving unit 1 and a first transmission assembly 2; a driving end of the first driving unit 1 is connected to the first transmission assembly 2, the first driving unit 1 is used to connect to the keyboard 200, the first transmission assembly 2 can rotate around a first direction A, and the first transmission assembly 2 is used to connect to the screen 300;

[0045] The static torque of the first driving unit 1 is greater than the torsional torque of the first transmission assembly 2 , and the first direction A is perpendicular to the operating surface of the keyboard 200 .

[0046] Specifically, the first driving unit 1 is the power source of the driving mechanism 100, which is used to generate a driving force to drive the first transmission assembly 2 connected thereto to rotate around the first direction A, thereby realizing the automatic rotation of the screen 300 connected to the first transmission assembly 2. One or more mounting holes can be set on the first driving unit 1, and the first driving unit 1 is fixed to a proper position of the keyboard 200 through these mounting holes with bolts or screws. The first driving unit 1 can be selected from a motor, a pneumatic motor, etc.

[0047] The first transmission assembly 2 is used for power transmission. The first transmission assembly 2 has two driving modes: manual mode and automatic mode. In the automatic mode, the static torque of the first drive unit 1 is greater than the torsional torque of the first transmission assembly 2, so that the screen 300 connected to the first transmission assembly 2 can automatically rotate around the first direction A. In order to ensure that the first drive unit 1 can stably and effectively drive the first transmission assembly 2 to rotate, the static torque of the first drive unit 1 must also be large enough to overcome the gravity and friction of the screen 300 itself, to ensure that the screen 300 can rotate smoothly around the first direction A without being stuck or rotating smoothly due to the influence of gravity or friction.

[0048] In manual mode, the first driving unit 1 does not generate driving force, and the user applies a hand-pushing torque to the first transmission component 2 or the screen 300. When the hand-pushing torque is greater than the sum of the torque of the first transmission component 2, the gravity of the screen 300 itself, and the friction force, the first transmission component 2 will rotate smoothly around the first direction A. In this case, even without the drive of the first driving unit 1, the user can realize the rotation of the first transmission component 2 and the screen 300 around the first direction A through manual operation, thereby realizing the flipping of the screen 300.

[0049] The input end of the first transmission component 2 is rotationally connected to the first driving part 1, for example, by an interference fit or a threaded connection, so that the first transmission component 2 can rotate around the first direction A when manually driven, and the output end of the first transmission component 2 can be fixedly connected to the screen 300 by means of threads, snaps, etc.

[0050] Compared with the prior art, the driving mechanism 100 of the present application is provided with a first driving part 1 and a first transmission component 2. When driven electrically, since the static torque of the first driving part 1 is greater than the torque torque of the first transmission component 2, the first driving part 1 can directly drive the screen 300 to rotate around the first direction A through the first transmission component 2; when driven automatically, the hand-pushing torque directly overcomes the torque torque of the first transmission component. At this time, the first transmission component 2 drives the screen 300 to rotate around the first direction A, realizing both automatic and manual movement, which is more flexible. When the automatic mode is damaged, it can be replaced manually without affecting the normal use of the user, and is more practical.

[0051] The driving axis of the first driving unit 1 may be consistent with the first direction A. In this case, the first transmission assembly 2 may be a driving shaft. The first driving unit 1 drives the screen 300 to rotate around the first direction A through the driving shaft. In order to make the overall structure more compact, as shown in FIG. Figure 4 As shown, in some embodiments, the first transmission assembly 2 includes a transmission shaft 21, a worm gear 22 and a worm 23;

[0052] The driving end of the first driving unit 1 is rotationally connected to the worm 23, the worm 23 is meshed with the worm wheel 22, the worm wheel 22 is sleeved on the transmission shaft 21, and the transmission shaft 21 is used to connect with the screen 300. The static torque of the first driving unit 1 is greater than the torsional torque of the transmission shaft 21, and the axial direction of the transmission shaft 21 is consistent with the first direction A.

[0053] Specifically, the driving end of the first driving part 1 can be connected to the worm 23 by an interference fit or a threaded connection, the worm wheel 22 and the transmission shaft 21 can be interference fit, or, when the worm wheel 22 and the transmission shaft 21 are both made of metal, the worm wheel 22 and the transmission shaft 21 can also be connected by welding.

[0054] The use of the worm wheel 22, the worm 23 and the transmission shaft 21 as the first transmission assembly 2 can realize the driving function in a limited space, making the overall structure more compact, thereby realizing the miniaturization and lightness of the electronic device. In addition, the meshing of the worm wheel 22 and the worm 23 can realize accurate power transmission, ensuring that the screen 300 rotates smoothly and accurately in the first direction A.

[0055] like Figure 3 and Figure 4 As shown, in some embodiments, the driving mechanism 100 further includes a cover 3 and a base 5;

[0056] A worm gear 22 is disposed between the base 5 and the cover 3. The base 5 is connected to the transmission shaft 21 for rotation around a first direction A. The base 5 is connected to the cover 3. Both the cover 3 and the base 5 are used for fixed connection with the keyboard 200.

[0057] The first driving unit 1 includes a first motor;

[0058] The first motor is disposed on the base 5 , and is rotationally connected to the worm 23 . The static torque of the first motor is greater than the torsional torque of the transmission shaft 21 .

[0059] Specifically, the base 5 and the cover 3 are both used to be fixedly connected to the keyboard 200, ensuring the stability of the connection between the drive mechanism 100 and the keyboard 200, and avoiding unstable operation or equipment damage caused by unstable connection. A worm gear 22 is arranged between the base 5 and the cover 3, making the overall drive mechanism 100 more compact and improving space utilization.

[0060] The first motor can provide efficient and controllable power output, and has a simple structure and a low failure rate. In order to reduce the output speed of the first motor and increase the output torque, the first driving unit 1 can also include a first reducer, and the first motor is rotatably connected to the worm 23 through the first reducer. The static torque of the first motor is greater than the torsional torque of the transmission shaft 21, ensuring that the first motor can provide sufficient driving force so that the screen 300 can automatically rotate around the first direction A.

[0061] like Figure 4 As shown, in some embodiments, a first sensor 3 is also included;

[0062] The first sensor 3 is connected to the first transmission assembly 2 , and the first sensor 3 is signal-connected to the first driving unit 1 . The first sensor 3 is used to detect the angle of rotation of the first transmission assembly 2 around the first direction A.

[0063] Specifically, whether in automatic or manual mode, the first sensor 3 can accurately detect the actual rotation angle of the transmission shaft 21. This precise measurement structure provides the first drive unit 1 with necessary feedback information, so that the first drive unit 1 can accurately control and adjust according to the actual angle, ensuring that the screen 300 moves smoothly and accurately within a preset angle range. The first sensor 3 can be fixed to the keyboard 200 by gluing or snapping. The first sensor 3 can be a grating sensor or a magnetic encoder, etc.

[0064] The first sensor 3 is used to directly or indirectly detect the angle of rotation of the transmission shaft 21 in the first transmission assembly 2 around the first direction A. When the first sensor 3 directly detects the angle of rotation of the transmission shaft 21 around the first direction A, the detection end of the first sensor 3 faces one end of the transmission shaft 21; when the first sensor 3 indirectly detects the angle of rotation of the transmission shaft 21 around the first direction A, the detection end of the first sensor 3 faces one end of the transmission shaft 21. Figure 4 As shown, in some embodiments, the first transmission assembly 2 further includes a synchronous ring gear 24 and a spur gear 25;

[0065] The synchronous ring gear 24 is sleeved on the transmission shaft 21 , and the spur gear 25 is meshed with the synchronous ring gear 24 . The spur gear 25 is used to rotate around the first direction A and is connected to the base 5 . The first sensor 3 and the spur gear 25 are opposite to each other along the first direction A.

[0066] Specifically, the synchronous gear ring 24 can be fixedly connected to the transmission shaft 21 by means of interference fit or key connection, that is, the synchronous gear ring 24 and the transmission shaft 21 keep synchronous rotation, and the spur gear 25 and the synchronous gear ring 24 are meshed, that is, the synchronous rotation of the spur gear 25 and the synchronous gear ring 24 is realized, and at this time, the detection end of the first sensor 3 is facing the spur gear 25 to indirectly detect the rotation angle of the transmission shaft 21 around the first direction A. Through the indirect detection method of the spur gear 25 and the synchronous gear ring 24, the installation of the first sensor 3 is more flexible, and the design can be optimized according to the overall layout and space restrictions of the equipment, reducing the demand for the internal space of the equipment.

[0067] The first transmission component 2 can also include a cam 27 and a bearing steel ball 28. A slide groove is set on the base. The cam 27 and the bearing steel ball 28 are both mounted on the transmission shaft, and the bearing steel ball 28 is placed in the slide groove. The cam 27 is set between the bearing steel ball 28 and the synchronous gear ring 24. The cam 27 and the bearing steel ball 28 jointly ensure the smooth operation of the transmission shaft 21.

[0068] like Figure 3 and Figure 4 As shown, in some embodiments, the first transmission assembly 2 further includes a limiting member 26;

[0069] The limiting member 26 is connected to the inner wall of the transmission shaft 21 , and a portion of the limiting member 26 extends out of the transmission shaft 21 to form a limiting portion, and the worm gear 22 is used to be arranged between the screen 300 and the limiting portion.

[0070] Specifically, the stopper 26 may be a bolt or a screw, the transmission shaft 21 has an internal thread matching the stopper 26, and the stopper 26 is threadedly connected to the transmission shaft 21. The stopper 26 can reduce the shaking and vibration of the worm gear 22 during the hybrid operation, so that the screen 300 rotates around the first direction A more smoothly and accurately.

[0071] like Figure 1 , Figure 5 and Figure 6 As shown, in some embodiments, a second driving unit 6 and a second transmission assembly 7 are also included;

[0072] The driving end of the second driving part 6 is connected to the second transmission assembly 7, and the second driving part 6 is connected to the first transmission assembly 2; the second transmission assembly 7 can rotate around the second direction B, and the second transmission assembly 7 is used to connect with the screen 300;

[0073] The static torque of the second driving part 6 is greater than the torsional torque of the second transmission assembly 7 , and the second direction B is perpendicular to the first direction A.

[0074] Specifically, the second driving unit 6 may include a second motor and a second reducer, the second transmission assembly 7 may include a coupling 71, a torque shaft 72, a fixing plate 73 and a bracket 74, the second motor is arranged on the bracket 74, the second motor is connected to one end of the torque shaft 72 through the second reducer, the torque shaft 72 is sleeved with a fixing plate 73, the fixing plate 73 is fixedly connected to the screen 300, and the other end of the torque shaft 72 is rotatable around the second direction B and is arranged on the bracket 74; the driving mechanism 100 also includes a connecting member 9, and the bracket 74 is connected to the first transmission assembly 2 through the connecting member 9.

[0075] The fixing plate 73 in the second transmission assembly 7 is used for power transmission. The fixing plate 73 has two driving modes: manual mode and automatic mode. In the automatic mode, the static torque of the second driving part 6 is greater than the torque torque of the torque shaft 72, so that the fixing plate 73 on the torque shaft 72 can automatically rotate around the second direction B. In order to ensure that the second driving part 6 can stably and effectively drive the torque shaft 72 to rotate, the static torque of the second driving part 6 needs to be large enough to overcome the gravity and friction of the screen 300 itself and the fixing plate 73, to ensure that the screen 300 can rotate smoothly around the second direction B without being stuck or rotating smoothly due to the influence of gravity or friction.

[0076] In manual mode, the second driving unit 6 does not generate driving force, and the user applies a hand-pushing torque on the fixing plate 73 or the screen 300. When the hand-pushing torque is greater than the sum of the torque torque of the torque shaft 72, the screen 300 itself, the gravity of the fixing plate 73, and the friction force, the fixing plate 73 will rotate smoothly around the second direction B. In this case, even in the absence of the driving of the second driving unit 6, the user can realize the rotation of the fixing plate 73 and the screen 300 around the second direction B through manual operation, thereby realizing the opening and closing of the screen 300.

[0077] The second driving unit 6 is connected to the first transmission assembly 2, so that the screen 300 can rotate around the first and second directions, which greatly increases the flexibility and functionality of the device. The user can automatically adjust the angle of the screen 300 in two dimensions as needed, and the movement in the two dimensions can be adjusted manually and automatically, which improves the user experience and enhances the overall performance and value of the product.

[0078] like Figure 6 As shown, in some embodiments, a second sensor 8 is also included;

[0079] The second sensor 8 is disposed on the second transmission assembly 7 . The second sensor 8 is signal-connected to the second driving unit 6 . The second sensor 8 is used to detect the angle of rotation of the second transmission assembly 7 around the second direction B.

[0080] Specifically, whether in automatic or manual mode, the second sensor 8 can accurately detect the actual rotation angle of the second transmission assembly 7. This precise measurement structure provides the second drive unit 6 with necessary feedback information, so that the second drive unit 6 can be accurately controlled and adjusted according to the actual angle, ensuring that the screen 300 moves smoothly and accurately within a preset angle range. The second sensor 8 can be fixed to the second transmission assembly 7 by gluing or snapping. The second sensor 8 can be a grating sensor or a magnetic encoder, etc.

[0081] like Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments,

[0082] There are two second driving parts 6 , and the two second driving parts 6 are respectively disposed on two sides of the first transmission assembly 2 along the second direction B.

[0083] Specifically, by respectively arranging the second driving parts 6 on both sides of the first transmission component 2 along the second direction B, the two second driving parts 6 move synchronously, so that a balanced distribution of the load can be achieved. In this way, when the screen 300 rotates in the second direction B, the two second driving parts 6 can jointly bear the torque and force, avoiding the problem of overload or uneven wear of a single driving part, and extending the service life of the equipment. In addition, the dual-drive design improves the stability of the overall system, reduces the shaking and instability of the screen 300 when rotating, and makes the screen 300 move more smoothly and accurately during the adjustment process.

[0084] Both second drive units 6 can be provided with a second sensor 8, and the two second drive units 6 can select different second sensors 8, for example, a magnetic encoder and a grating sensor. The magnetic encoder has a higher detection range, while the grating sensor has higher accuracy and resolution. Combining the advantages of the two sensors, a wide detection range and high-precision, high-resolution measurement can be achieved.

[0085] Example 2

[0086] like Figure 1 and Figure 2 As shown, Embodiment 2 of the present application provides an electronic device, including:

[0087] A keyboard 200, a screen 300 and a driving mechanism 100 of Embodiment 1;

[0088] The first driving part 1 of the driving mechanism 100 is connected to the keyboard 200 , the first transmission assembly 2 of the driving mechanism 100 is connected to the screen 300 , and the keyboard 200 and the screen 300 have relative movement in at least one direction.

[0089] Specifically, the electronic device provided in Example 2 integrates the driving mechanism 100 of Example 1 to achieve flexible adjustment of the screen 300 in at least one direction, improves work efficiency and user experience, enhances the adaptability and scalability of the device, and provides users with a more user-friendly, multifunctional and easy-to-use electronic device.

[0090] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the 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 driving mechanism, characterized in that: include: A first driving unit and a first transmission assembly; a driving end of the first driving unit is connected to the first transmission assembly, the first driving unit is used to connect to the keyboard, the first transmission assembly can rotate around a first direction, and the first transmission assembly is used to connect to the screen; Wherein, the static torque of the first driving part is greater than the torsional torque of the first transmission component, and the first direction is perpendicular to the operating surface of the keyboard.

2. The driving mechanism according to claim 1, characterized in that: The first transmission assembly includes a transmission shaft, a worm wheel and a worm; The driving end of the first driving part is rotationally connected to the worm, the worm is meshed with the worm wheel, the worm wheel is sleeved on the transmission shaft, and the transmission shaft is used to connect with the screen. The static torque of the first driving part is greater than the torsional torque of the transmission shaft, and the axial direction of the transmission shaft is consistent with the first direction.

3. The driving mechanism according to claim 2, characterized in that: The driving mechanism also includes a cover and a base; The worm gear is arranged between the base and the cover, the base is connected to the transmission shaft for rotation around the first direction, the base is connected to the cover, and both the cover and the base are used for fixed connection with the keyboard; The first driving unit includes a first motor; The first motor is disposed on the base, the first motor is rotationally connected to the worm, and the static torque of the first motor is greater than the torsional torque of the transmission shaft.

4. The driving mechanism according to claim 3, characterized in that: Also included is a first sensor; The first sensor is connected to the first transmission component, the first sensor is connected to the first driving unit signal, and the first sensor is used to detect the angle of rotation of the first transmission component around the first direction.

5. The driving mechanism according to claim 4, characterized in that: The first transmission assembly also includes a synchronous ring gear and a spur gear; The synchronous gear ring is sleeved on the transmission shaft, the spur gear is meshed with the synchronous gear ring, the spur gear is used to rotate around the first direction and is connected to the base, and the first sensor is opposite to the spur gear along the first direction.

6. The driving mechanism according to claim 2, characterized in that: The first transmission assembly further includes a limiter; The limiting member is connected to the inner wall of the transmission shaft, and a portion of the limiting member extends out of the transmission shaft to form a limiting portion, and the worm gear is used to be arranged between the screen and the limiting portion.

7. The driving mechanism according to claim 1, characterized in that: Also includes a second driving unit and a second transmission assembly; The driving end of the second driving part is connected to the second transmission assembly, and the second driving part is connected to the first transmission assembly; the second transmission assembly can rotate around a second direction, and the second transmission assembly is used to connect to the screen; Wherein, the static torque of the second driving part is greater than the torsional torque of the second transmission component, and the second direction is perpendicular to the first direction.

8. The driving mechanism according to claim 7, characterized in that: Also including a second sensor; The second sensor is disposed on the second transmission component. The second sensor is connected to the second driving unit by signal. The second sensor is used to detect the angle of rotation of the second transmission component around the second direction.

9. The driving mechanism according to claim 7, characterized in that: There are two second driving parts in total, and the two second driving parts are respectively arranged on both sides of the first transmission component along the second direction.

10. An electronic device, characterized in that: include: A keyboard, a screen, and a driving mechanism according to any one of claims 1 to 9; The first driving part of the driving mechanism is connected to the keyboard, the first transmission component of the driving mechanism is connected to the screen, and the keyboard and the screen have relative movement in at least one direction.