Rotary transmission structure and electronic device

Abstract

This disclosure provides a rotary transmission structure and an electronic device. The rotary transmission structure includes a mounting base for mounting a gearbox, a fixing bracket for mounting the mounting base, a worm gear and a helical gear that are drively connected to the gearbox, and an elastic element disposed between the fixing bracket and the mounting base. The elastic element is configured to generate a spring force on the mounting base to drive the worm gear and the helical gear into an elastic meshing connection. In the rotary transmission structure of this application, the elastic element has an elastic force, enabling the worm gear and the helical gear to elastically engage and achieve stable transmission. Furthermore, when the laptop screen is manually rotated, the helical gear is subjected to rotational force, and the worm gear is subjected to axial force; the elastic element ensures a tight fit between the two, guaranteeing stable manual rotation.

Description

Technical Field

[0001] This disclosure relates to the field of electronic equipment technology, and more particularly to a rotary transmission structure and electronic equipment. Background Technology

[0002] With the application of facial tracking technology, some laptop screens on the market can now not only open by flipping and rotating relative to the chassis, but also rotate left and right relative to the chassis, allowing the camera on the screen to track and capture facial images from various angles. However, current rotating hinges used in laptops to support manual or electric horizontal screen rotation sometimes experience issues such as free travel, wobbling, jamming, or slippage during the rotation process.

[0003] Therefore, it is necessary to design a new type of rotary transmission structure to better solve the problems that occur during screen rotation. Utility Model Content

[0004] This disclosure provides a rotary transmission structure and electronic device to at least solve one of the technical problems existing in the prior art.

[0005] In a first aspect, this application provides a rotary transmission structure, including a mounting base for mounting a gearbox, a fixing frame for mounting the mounting base, a worm gear and a transmission helical gear that are drively connected to the gearbox, and an elastic element disposed between the fixing frame and the mounting base; the elastic element is configured to generate an elastic force on the mounting base to drive the worm gear and the transmission helical gear to elastically mesh and connect.

[0006] In one embodiment, the elastic element is arranged along a direction perpendicular to the axis of the worm gear.

[0007] In one possible implementation, the elastic element is a spring.

[0008] In one embodiment, a limiting post is further included, one end of which is fixedly connected to the mounting base, and the spring is sleeved on the outside of the limiting post.

[0009] In one embodiment, a limiting post is further included, one end of which is fixedly connected to the fixing frame, and the spring is sleeved on the outside of the limiting post.

[0010] In one embodiment, two elastic elements are provided, respectively located on both sides of the worm gear.

[0011] In one embodiment, the system further includes a protrusion connected to the fixing frame, and the elastic element is provided between the protrusion and the mounting base.

[0012] In one embodiment, the protrusion is formed by extending outward from the surface of the fixture.

[0013] Secondly, this application provides an electronic device, including a display terminal and a system terminal, and also includes the rotary transmission structure in any of the above-described possible embodiments.

[0014] In one possible implementation, the display terminal is movably connected to the system terminal via the rotary transmission structure.

[0015] Compared with existing technologies, the advantages of this application are as follows: In the rotary transmission structure of this application, the elastic element has an elastic force, which enables the worm gear and the transmission helical gear to elastically engage and achieve stable transmission. Furthermore, when the laptop screen is manually rotated, the transmission helical gear is subjected to rotational force, and the worm gear is subjected to axial force. The elastic element ensures a tight fit between the two, guaranteeing stable manual rotation. When electric rotation is used, the worm gear is driven by a motor, which in turn drives the transmission helical gear and the screen to rotate. The elastic engagement compensates for processing or assembly errors, preventing jamming and slippage, and ensuring transmission reliability. It also further extends the service life of the rotary transmission structure and reduces noise during use.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0017] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:

[0018] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0019] Figure 1 A complete structural schematic diagram of the rotary transmission structure according to an embodiment of the present disclosure is shown;

[0020] Figure 2 A schematic diagram of a rotary transmission structure according to an embodiment of the present disclosure is shown;

[0021] Figure 3 Another schematic diagram of the rotary transmission structure according to an embodiment of the present disclosure is shown;

[0022] Figure 4 A schematic diagram of another structure of the rotary transmission structure according to an embodiment of the present disclosure is shown;

[0023] Figure 5 It shows Figure 2An explosion diagram.

[0024] The following are the labels in the diagram: 1-Rotary transmission structure, 2-Rotary assembly, 3-Drive assembly, 4-Hinge shaft body, 11-Gear gearbox, 12-Mounting base, 13-Fixed frame, 14-Worm gear, 15-Transmission helical gear, 16-Elastic element, 17-Limiting post, 18-Protrusion, 21-Rotary frame, 23-Transmission gear set, 24-Encoder gear, 31-Drive motor, 211-Mounting part, 212-Rotary shaft, 232-Encoder synchronous pulley. Detailed Implementation

[0025] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0026] Firstly, such as Figure 1-5 As shown, this application provides a rotary transmission structure 1, including a mounting base 12 for mounting a gearbox 11, a fixing frame 13 for mounting the mounting base 12, a worm gear 14 and a transmission helical gear 15 that are connected to the gearbox 11. The rotary transmission structure 1 also includes an elastic element 16 disposed between the fixing frame 13 and the mounting base 12. The elastic element 16 is configured to generate a spring force on the mounting base 12 to drive the worm gear 14 and the transmission helical gear 15 to engage elastically.

[0027] Specifically, such as Figure 1-3 As shown, the rotary transmission structure 1 disclosed in the related technology includes a hinge shaft body 4, a rotary assembly 2, and a drive assembly 3; the hinge shaft body 4 extends along a first direction X, and one end forms a connecting end; the rotary assembly 2 has a mounting portion 211 for connecting the connecting end along the first direction X, and the rotary assembly 2 has a rotation axis along a second direction Z; the drive assembly 3 is connected to the rotary assembly 2 for driving the rotary assembly 2 to rotate around the second direction Z; wherein, the first direction X and the second direction Z are perpendicular to each other; the hinge shaft body 4 has a mounting bracket for mounting the device to be rotated; the mounting bracket can rotate with the hinge shaft body 4 around the first direction X, or rotate with the rotary assembly 2 around the second direction Z.

[0028] Among them, such as Figure 1 , Figure 5As shown, the rotating assembly 2 includes a rotating frame 21, a fixed frame 13, and a transmission gear set 23. The rotating frame 21 has a rotating shaft 212 extending along the second direction Z. The fixed frame 13 is fixedly installed at the installation position and has an insertion hole for inserting the rotating shaft 212. The transmission gear set 23 is mounted on the circumferential surface of the rotating shaft 212 and is connected to the drive assembly 3. The drive assembly 3 can drive the rotating frame 21 to reciprocate around the second direction Z through the transmission gear set 23. The transmission gear set 23 includes a synchronously fitted transmission helical gear 15 and an encoder synchronous wheel 232. The transmission helical gear 15 is meshed with the drive assembly 3. The rotating assembly 2 also includes an encoder gear 24 for detecting the rotation angle of the rotating frame 21. The encoder gear 24 is meshed with the encoder synchronous wheel 232.

[0029] The drive assembly 3 includes a drive motor 31, a gearbox 11, and a worm gear 14. The output shaft of the drive motor 31 is connected to the gearbox 11, and the output shaft of the gearbox 11 is connected to the worm gear 14. The worm gear 14 can mesh with the helical gear 15 in the transmission gear set 23. Thus, when the drive motor 31 is energized and rotates, it can stably transmit the driving force to the transmission gear set 23 of the rotating assembly 2, stably realizing the function of driving the rotating frame 21 to rotate around the rotation axis 212. In summary, this rotary transmission structure 1 can not only realize the reciprocating rotation of the device to be rotated with the hinge shaft body 4 around the first direction X, but also realize the reciprocating rotation of the device to be rotated with the rotating assembly 2 around the second direction Z. This allows the device to independently reciprocate in two mutually perpendicular directions. When applied to a laptop screen, it can effectively realize the rotation of the screen relative to the body plane and achieve the beneficial effect of the screen camera for face tracking technology.

[0030] However, because the helical gear 15 and the worm gear 14 are meshed, the gap between the gears is unstable, leading to idle travel or wobbling during rotation. This causes instability, idle travel, or jamming during screen rotation when the rotary transmission structure 1 is applied to a laptop computer. To solve this problem, this application adds an elastic element 16 to the original rotary transmission structure. The elastic element has an elastic force, enabling elastic engagement between the worm gear 14 and the helical gear 15, achieving stable transmission. When the laptop screen is manually rotated, the helical gear 15 is subjected to rotational force, and the worm gear 14 is subjected to axial force. The elastic element ensures a tight fit between the two, ensuring stable manual rotation. When electric rotation is used, the worm gear is driven by a motor, which rotates the helical gear and the screen. The elastic engagement compensates for machining or assembly errors, preventing jamming and slippage, and ensuring transmission reliability. This also extends the service life of the rotary transmission structure and reduces noise during use.

[0031] For example, such as Figure 3 As shown, two sets of drive motors 31 and gearboxes 11 are connected in a corresponding transmission connection, and the two sets of drive motors 31 and gearboxes 11 are symmetrically arranged at both ends of the worm gear 14. In this way, the two sets of drive motors 31 can drive one worm gear 14 simultaneously and synchronously, which fully ensures that the worm gear 14 can generate a sufficiently stable and large torque to act on the transmission helical gear 15.

[0032] The mounting base 12 is fitted onto the outside of the gearbox 11 and the two are fixedly connected (e.g., by welding). An elastic element 16 is provided between the mounting base 12 and the fixing frame 13. The elastic element 16 acts directly on the mounting base 12 in the third direction (Y direction), thereby driving the gearbox 11 and the worm gear 14 to act on the transmission helical gear 15, so that the worm gear 14 and the transmission helical gear 15 are elastically meshed in the third direction (Y direction), ensuring the stability of the transmission between the two.

[0033] In one embodiment, the elastic element 16 is arranged along a direction perpendicular to the axis of the worm gear 14. For example... Figure 3 As shown, the elastic element 16 is arranged along a third direction (Y direction) perpendicular to the axis of the worm gear 14. This arrangement facilitates the installation of the elastic element and also makes it easy for the elastic element 16 to exert a third-direction force on the worm gear 14.

[0034] For example, such as Figure 3 As shown, two elastic elements 16 are provided, respectively located on both sides of the worm gear 14. By placing the elastic elements 16 on both sides of the worm gear 14, the two ends of the worm gear 14 can be subjected to a balanced third-direction force, thereby ensuring the stability of the meshing connection with the transmission helical gear 15.

[0035] Furthermore, the elastic element 16 includes, but is not limited to, a spring.

[0036] In one possible implementation, such as Figure 4 As shown (for ease of demonstration), Figure 4 (The spring outside the limiting post 17 on the left side is not shown). The rotary transmission structure 1 also includes a limiting post 17, one end of which is fixedly connected to the mounting base 12, and the other end of which is a free end. The spring is sleeved on the outside of the limiting post 17. Alternatively, one end of the limiting post 17 is fixedly connected to the fixing frame 13, and the other end of which is a free end. The spring is sleeved on the outside of the limiting post 17.

[0037] A limiting post 17 is provided between the mounting base 12 and the fixing frame 13. A spring is sleeved on the outside of the limiting post 17 to limit the spring displacement, prevent the spring from popping out, and ensure that the elastic force of the spring can always be maintained on the gearbox 11, thereby ensuring the transmission stability between the worm gear and the transmission helical gear.

[0038] In one possible implementation, such as Figure 4 As shown, the rotary transmission structure 1 also includes a protrusion 18, which is connected to the fixing frame 13. The elastic member 16 is provided between the protrusion 18 and the mounting base 12. For example, the protrusion 18 extends outward from the surface of the fixing frame 13. For example, as... Figure 1 , Figure 3 As shown, the protrusion 18 extends from the surface of the fixing frame along the second direction (Z direction), making the protrusion 18 and the fixing frame 13 an integrally formed structure. The protrusion 18 provides conditions for the installation of the elastic element, and the protrusion 18 facilitates processing and the installation of the elastic element.

[0039] Secondly, this application provides an electronic device, including a display terminal and a system terminal, and also including the aforementioned rotary transmission structure 1. The display terminal is movably connected to the system terminal via the rotary transmission structure 1.

[0040] The electronic device includes, but is not limited to, a laptop computer. Electronic devices with this rotary transmission structure 1 also have the effect of no idle travel, no jamming or slippage when the display end rotates, which improves transmission stability and ensures the service life of the electronic device.

[0041] It should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” and “counterclockwise” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A rotary drive structure comprising a mounting seat for mounting a gear box, a fixing frame for mounting the mounting seat, a worm gear in driving connection with the gear box, and a driving bevel gear, characterized in that: It also includes an elastic element disposed between the fixed frame and the mounting base; the elastic element is configured to generate an elastic force on the mounting base to drive the worm gear and the transmission helical gear to engage elastically.

2. The rotary drive structure according to claim 1, characterized in that: The elastic element is arranged along a direction perpendicular to the axis of the worm gear.

3. The rotational drive structure of claim 2, wherein: The elastic element is a spring.

4. The rotary drive structure according to claim 3, characterized in that: It also includes a limiting post, one end of which is fixedly connected to the mounting base, and the spring is sleeved on the outside of the limiting post.

5. The rotary drive structure of claim 3, wherein: It also includes a limiting post, one end of which is fixedly connected to the fixing frame, and the spring is sleeved on the outside of the limiting post.

6. The rotational drive structure of claim 3, wherein: Two elastic elements are provided, respectively located on both sides of the worm gear.

7. The rotary drive structure according to any one of claims 1 to 6, characterized in that: It also includes a protrusion that is connected to the fixing frame, and the elastic element is provided between the protrusion and the mounting base.

8. The rotational drive structure of claim 7, wherein: The protrusion is formed by extending outward from the surface of the fixing frame.

9. An electronic device comprising a display end and a system end, characterized in that: It also includes the rotary transmission structure as described in any one of claims 1-8.

10. The electronic device of claim 9, wherein: The display terminal is movably connected to the system terminal via the rotary transmission structure.

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