A rotating connection device

Abstract

This application relates to the field of rotating shaft mechanism connections, and in particular to a rotating connection device, including a rotating shaft, a fixing member, a torque mechanism, and a damping mechanism. The torque mechanism includes a first elastic component, a first drive sleeve, and a snap-fit ​​sleeve; the damping mechanism includes a second elastic component, a second drive sleeve, and a cam sleeve; the snap-fit ​​sleeve and the cam sleeve are both sleeved on the rotating shaft and rotatably connected to it, with the snap-fit ​​sleeve abutting against the fixing member; the first drive sleeve and the second drive sleeve are sleeved on the rotating shaft and rotate synchronously with it, with a rotating snap-fit ​​mechanism between the first drive sleeve and the snap-fit ​​sleeve allowing relative rotation; a convex-concave fitting mechanism is provided between the second drive sleeve and the cam sleeve, allowing relative rotation. This device allows for easy opening of the flip-over component, preventing the main body of the equipment from moving with it, greatly improving operational convenience, enabling free hovering at any position, and providing end-point self-locking and closing anti-locking functions after opening.

Description

Technical Field

[0001] This application relates to the field of rotating shaft mechanism connections, and in particular to a rotating connection device. Background Technology

[0002] In today's era of rapid technological advancement, electronic products have become deeply integrated into people's daily lives. From laptops for daily office work to tablets for entertainment and social networking, and foldable phones essential for communication, these devices have greatly improved people's work efficiency and enriched their life experiences. The multi-functional hinge structure, as a core component of these electronic devices, connects the main body of the device to the flipping mechanism, allowing the device to be flexibly folded or unfolded, greatly enhancing its portability and versatility in various usage scenarios. With social progress and technological iteration, users are paying increasing attention to the performance and user experience of electronic products, and have placed unprecedented demands on the convenience and stability of operation. For example, in business settings, people expect to be able to quickly and easily open the device for information retrieval and presentation; in home entertainment, they also expect the device to remain stably at a suitable angle, providing a comfortable visual experience. In the past, to achieve the keyboard opening and closing function, the commonly used keyboard hinge assembly consisted of a rotating shaft, a fixing component, a torsion spring, a connecting component, and a limiting component. One common method was to utilize the elastic potential energy of the torsion spring to cause the rotating shaft to automatically reset or maintain a specific angle, thereby realizing the opening and closing of the keyboard. In addition, traditional hinge structures typically incorporate a single torque or damping mechanism to control the keyboard's opening and closing speed and precisely position the keyboard, ensuring relative stability during normal use. These traditional technologies were widely used in various electronic devices for a long time, playing a crucial role in driving the development of electronic products. However, existing hinge structures have significant drawbacks. Due to the inherent structural limitations of the torsion spring, the hinge struggles to achieve a stable self-locking effect during opening and closing. As a result, users often need to exert considerable force to open the keyboard, sometimes even requiring the use of both hands. Furthermore, the keyboard is prone to wobbling along with the hinge, greatly impacting ease of operation and severely reducing the user experience, falling far short of current expectations for ease of use and stability. Utility Model Content

[0003] To overcome the above-mentioned technical problems, this application provides a rotary connection device.

[0004] A rotating connection device includes a rotating shaft for fixed connection to a first flipping member, a fixing member for fixed connection to a second flipping member, and a torque mechanism and a damping mechanism sleeved on the rotating shaft. The fixing member is sleeved on the rotating shaft. The torque mechanism includes a first elastic component, a first driving sleeve, and a snap-fit ​​sleeve. The damping mechanism includes a second elastic component, a second driving sleeve, and a cam sleeve. Both the snap-fit ​​sleeve and the cam sleeve are sleeved on the rotating shaft and rotatably connected to it. The snap-fit ​​sleeve abuts against the fixing member to restrict its axial movement, and the cam sleeve is fixedly connected to the fixing member. The first driving sleeve and the second driving sleeve are sleeved on the rotating shaft and rotate synchronously with it. A rotating snap-fit ​​mechanism is provided between the first driving sleeve and the snap-fit ​​sleeve, allowing them to rotate relative to each other. When the first driving sleeve rotates relative to the snap-fit ​​sleeve, the first driving sleeve drives the snap-fit ​​sleeve to rotate synchronously; a concave-convex fitting mechanism is provided between the second driving sleeve and the cam sleeve and they can rotate relative to each other. When the second driving sleeve rotates relative to the cam sleeve, the second driving sleeve can move axially along the rotation axis; when the convex parts of the concave-convex fitting mechanism are opposite each other, it is the open position of the flip-up part; when the concave parts of the concave-convex fitting mechanism are inserted into each other, it is the closed position of the flip-up part; the first elastic component is sleeved on the rotation axis and acts on the snap-fit ​​sleeve to drive the snap-fit ​​sleeve to move towards the first driving sleeve; the second elastic component is sleeved on the rotation axis and acts on the second driving sleeve to drive the second driving sleeve to move towards the cam sleeve. By adopting the above technical solution and through the carefully designed torque and damping mechanisms, this hinge structure significantly reduces the force required for users to open or close the flip component. Users can easily open the flip component with just one hand, without the need for strenuous effort or two-handed coordination, greatly improving operational convenience. Simultaneously, the main body of the device remains stable during the opening process, no longer moving with the flip component, reducing operational difficulty. During the closing phase, the movable contact between the first drive sleeve and the locking sleeve achieves a locking function, effectively preventing accidental keyboard opening and enhancing product safety and stability. The concave-convex mating mechanism in this hinge structure plays a crucial role in the opening and transition phases. When the keyboard is opened to a certain angle, the inner walls of the concave-convex mating mechanism abut against each other, providing stable support for the keyboard and enabling free hovering. Preferably, the rotating snap-fit ​​mechanism includes arc-shaped protrusions and arc-shaped grooves. The first driving sleeve has two arc-shaped protrusions extending from the side near the snap-fit ​​sleeve. The snap-fit ​​sleeve is provided with arc-shaped grooves that cooperate with the arc-shaped protrusions. When the first driving sleeve rotates with the rotating shaft, the arc-shaped protrusions can rotate and slide within the arc-shaped grooves.By adopting the above technical solution, when the rotating shaft rotates, it drives the first driving sleeve to rotate synchronously. Since the side of the first driving sleeve near the snap-fit ​​sleeve has two arc-shaped protrusions, and the snap-fit ​​sleeve has arc-shaped grooves that cooperate with the arc-shaped protrusions, when the first driving sleeve rotates, the arc-shaped protrusions on it will rotate and slide within the arc-shaped grooves of the snap-fit ​​sleeve, thereby enabling the first driving sleeve to drive the snap-fit ​​sleeve to rotate synchronously, realizing the effective transmission of power of the rotating shaft and ensuring the coordinated operation of the various components of the rotating connection device. Preferably, the fixing member includes a first collar, a second collar, and a connecting rod. The first collar and the second collar are both sleeved on the rotating shaft. The first collar is located at the end of the first elastic component away from the snap-fit ​​sleeve, and the second collar is located between the first driving sleeve and the cam sleeve. The connecting rod is connected to the bottom of the two collars respectively and is used for fixed connection with the second flipping member. By adopting the above technical solution, the fixing component is equipped with a first collar, a second collar, and a connecting rod. Both the first and second collars are fitted onto the rotating shaft. Since the first collar is located at the end of the first elastic component furthest from the locking sleeve, it can axially limit the first elastic component, preventing axial movement and ensuring its normal elastic function. Simultaneously, the second collar is located between the first driving sleeve and the cam sleeve, axially limiting both and preventing unnecessary axial displacement during rotation. Furthermore, the connecting rod is connected to the bottom of both collars, fixing the first and second collars into a single unit, making the fixing component more stable. The connecting rod is also used to fix the component to the second tilting component, thus achieving a stable connection between the entire rotating connection device and the second tilting component, ensuring the stability and reliability of the rotating connection device during operation. Preferably, the connecting rod extends and protrudes with a limiting block near the snap-fit ​​sleeve. The snap-fit ​​sleeve has a limiting groove that mates with the limiting block. The limiting block can rotate and slide within the limiting groove. The limiting block restricts the snap-fit ​​sleeve from moving axially away from the first driving sleeve. When the limiting block slides to the lower end of the limiting groove, it is in the closed position of the flip-up part, and the first driving sleeve is restricted from rotating. By adopting the above technical solution, in the rotating connection device, when the rotating shaft drives the first driving sleeve to rotate, the rotating snap-fit ​​mechanism causes the first driving sleeve to drive the snap-fit ​​sleeve to rotate synchronously. The limiting block on the connecting rod can rotate and slide within the limiting groove of the snap-fit ​​sleeve, and the limiting block can restrict the snap-fit ​​sleeve from moving axially away from the first driving sleeve. When the rotating shaft rotates and the limiting block slides to the lower end of the limiting groove, it means that the flipping part is in the closed position. At this time, due to the connection between the locking sleeve and the first driving sleeve and the limiting effect of the limiting block on the locking sleeve, the first driving sleeve is also restricted from rotating. This allows for precise control of the closing state of the flipping part, ensuring the stability and reliability of the device when it is closed.Preferably, the rotating shaft is provided with an abutment portion, and the first collar is located between the abutment portion and the first elastic component, and abuts against the abutment portion. By adopting the above technical solution, the rotating shaft is provided with an abutment portion, so that the first collar is located between the abutment portion and the first elastic component and abuts against the abutment portion. The abutment portion can play a positioning role for the first collar, preventing the first collar from moving arbitrarily axially on the rotating shaft, thereby ensuring the axial positional stability of the first elastic component, allowing the first elastic component to act more stably on the snap-fit ​​sleeve, ensuring the fitting accuracy and stability between the components of the rotating connection device, and improving the overall performance and reliability of the rotating connection device. Preferably, the snap-fit ​​sleeve is provided with a receiving groove, and the end of the first elastic component away from the first collar is embedded in the receiving groove. By adopting the above technical solution, since the snap-fit ​​sleeve is provided with a receiving groove, and the end of the first elastic component away from the first collar is embedded in the receiving groove, the connection between the first elastic component and the snap-fit ​​sleeve is more stable, preventing the first elastic component from shifting or shaking during operation. This allows for a more effective drive of the snap-fit ​​sleeve to move towards the first driving sleeve, ensuring the stability and reliability of the rotating connection device. Preferably, the concave-convex fitting mechanism includes a first flange and a first groove. The first flange is disposed on the cam sleeve, and the first groove is disposed on the second driving sleeve. The shape of the first flange matches the shape of the first groove. By adopting the above technical solution, since the concave-convex fitting mechanism includes a first flange disposed on the cam sleeve and a first groove disposed on the second driving sleeve, and the shape of the first flange matches the shape of the first groove, when the second driving sleeve and the cam sleeve rotate relative to each other, this shape matching relationship allows the first flange to smoothly engage with or separate from the first groove. When the first flange and the first groove are engaged, the flipper is precisely positioned in its closed position. When the first flange disengages from the first groove and the convex and concave parts of the mating mechanism are aligned, the flipper is opened. Therefore, this structure achieves precise control of the opening and closing position of the flipper in the rotating connection device. Preferably, the first flange includes a first end face, which is a plane, a curved surface, or an arcuate surface. Multiple slopes with different inclinations are provided on both sides of the first flange, and the surface of each slope is a plane, a curved surface, or an arcuate surface. By adopting the above technical solution, the first flange has a first end face that can be a plane, a curved surface, or an arcuate surface, and multiple slopes with different inclinations and surfaces that can be planes, curved surfaces, or arcuate surfaces are provided on both sides of the first flange. The different slopes cause the second drive sleeve to experience different resistance magnitudes and trends as its rotational position changes during relative rotation with the cam sleeve.For example, when the second drive sleeve slides along a steeper slope, it needs to overcome greater resistance to continue rotating, while sliding along a gentler first functional slope, the resistance is relatively small. This allows for more precise control of the rotational speed and position of the second drive sleeve. Simultaneously, slopes with different surface morphologies adapt to different application scenarios and design requirements. For instance, planar slopes provide more stable resistance changes, while curved or arc-shaped slopes achieve smoother transitions, thus giving the rotating connection device better controllability and adaptability during operation. Preferably, one side of the first flange comprises a first slope, a second slope, and a third slope in sequence. The first slope is a steep incline, the second slope is a plane, and the third slopes are all gentle inclines. Furthermore, the length of the first slope is less than the length of the third slope, and the inclination of the steep incline is greater than the inclination of the gentle incline. By adopting the above technical solution, the slope segments on one side of the first flange are arranged sequentially as a first slope segment, a second slope segment, and a third slope segment, with the first slope segment being a steep slope and the third slope segment being a gentle slope. Since the inclination of the steep slope segment is greater than that of the gentle slope segment, when the second drive sleeve and the cam sleeve rotate relative to each other, when the second drive sleeve passes through the first slope segment, the larger inclination makes it difficult for the second drive sleeve to change its position. This allows the second drive sleeve and the cam sleeve to rotate in opposite directions relative to each other when the opening / closing state is 0°-10°, returning to the closed state. When the opening angle is 10°-90°, the first elastic component allows for free hovering at any angle when passing through the planar position of the second slope. When the opening angle is 90°-145°, the second elastic component is further compressed when passing through the gentle slope of the third slope, requiring greater force to achieve free hovering at any angle. Furthermore, due to the slope design, the force required to close is less than the force required to open, enabling easy, stable, and convenient closing. This optimizes the overall performance of the rotating connection device, improving operational stability and user experience. Preferably, a bend connection is provided at the connection points of adjacent first and third slope sections. By adopting the above technical solution, a beveled connecting part is set at the connection between the first slope section and the third slope section. When the second drive sleeve and the cam sleeve rotate relative to each other, due to the presence of the beveled connecting part, compared with the smooth transition without the beveled connecting part, the second drive sleeve can produce a noticeable jamming sensation when passing through the connection. This jamming sensation helps to better locate and distinguish different states during the opening or closing of the flipping part, thereby improving the accuracy and stability of the operation of the rotating connecting device.

[0005] In summary, this application includes at least one of the following beneficial technical effects: 1. Users can easily open the flipping part with just one hand, without having to exert effort or use both hands, which greatly improves the convenience of operation;

[0006] 2. The main body of the device remains stable during the opening process of the flipping component and no longer moves with the flipping component, reducing the difficulty of operation;

[0007] 3. During the closing phase, it has a closing lock function to prevent the keyboard from automatically opening when closed;

[0008] 4. When the opening is in the 0°-10° state, because the first slope of the first flange is a steep slope, the first elastic component cannot function, making it difficult for the cam sleeve to slide over the first slope and enter the second slope so that it can automatically close to the 0° state.

[0009] 5. When the opening is between 10° and 90°, although the second slope of the first flange is flat, the first elastic component begins to function, enabling automatic hovering;

[0010] 6. When the opening is between 90° and 145°, the third slope of the first flange is a gentle slope, and both the first and second elastic components are compressed, enabling automatic hovering.

[0011] 7. Due to the limiting groove and limiting block restricting the rotation angle, and the special shape design of the angled connection, it has an end-point self-locking function after opening, which solves the problem of loosening when opened to the end position in the prior art. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a rotating connection device according to this application;

[0013] Figure 2 This is an installation schematic diagram of a rotating connection device according to this application;

[0014] Figure 3 This is an exploded view of a rotating connection device according to this application;

[0015] Figure 4 This is a structural diagram of the snap-fit ​​sleeve of a rotating connection device according to this application;

[0016] Figure 5 This is a structural diagram of the first drive sleeve of a rotary connection device according to this application;

[0017] Figure 6 This is a structural diagram of the second drive sleeve of a rotary connection device according to this application;

[0018] Figure 7 This is a structural diagram of a fixing component of a rotating connection device according to this application.

[0019] Explanation of reference numerals in the attached drawings: 1. Rotating shaft; 2. Fixing component; 3. Torque mechanism; 4. Damping mechanism; 5. Rotary snap-fit ​​mechanism; 6. Concave-convex mating mechanism; 7. First flipping component; 8. Second flipping component; 11. Abutting part; 12. Insertion part; 21. First collar; 22. Second collar; 23. Connecting rod; 24. Limiting block; 31. First elastic component; 32. First driving sleeve; 33. Snap-fit ​​sleeve; 331. Receiving groove; 332. Limiting groove; 41. Second elastic component; 42. Second driving sleeve; 43. Cam sleeve; 51. Arc-shaped protrusion; 52. Arc-shaped groove; 61. First flange; 62. First groove; 611. First slope; 612. Second slope; 613. Third slope; 614. Angular connection part. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0021] The rotating connection device provided in this application is mainly used in electronic devices such as foldable mobile phones, laptops, and tablets. The multi-functional hinge structure serves as a key component between the main body of the device (such as the keyboard base in a laptop that carries the core hardware and processing unit) and the flipping component (such as the top cover or screen panel integrating a high-definition display). See also... Figure 1 and Figure 2 The rotating connection device includes a rotating shaft 1 for fixed connection with the first flipping member 7, a fixing member 2 for fixed connection with the second flipping member 8, a torque mechanism 3, and a damping mechanism 4, both of which are sleeved on the rotating shaft 1. Specifically, in this embodiment, one end of the rotating shaft 1 is provided with a insertion part 12 that can be inserted into the first flipping member 7, and the other end of the insertion part 12 is sleeved with the torque mechanism 3 and the damping mechanism 4. An annular abutment part 11 is provided between the torque mechanism 3, the damping mechanism 4, and the insertion part 12 for abutting against the torque mechanism 3. (Refer to...) Figure 3Specifically, in this embodiment, the torque mechanism 3 includes a first elastic component 31, a first drive sleeve 32, and a snap-fit ​​sleeve 33; the damping mechanism 4 includes a second elastic component 41, a second drive sleeve 42, and a cam sleeve 43. Through the synergistic action of the torque mechanism 3 and the damping mechanism 4, precise control and stable support for the opening and closing process of the flipping component are achieved. The first elastic component 31 is a spring, and the second elastic component 41 includes a blocking component and a spring element. The blocking component is located at one end of the rotating shaft 1 and can be in the form of a nut for easy disassembly and maintenance. The spring element is sleeved on the rotating shaft 1, located between the blocking component and the second drive sleeve 42. One end of the spring element abuts against the blocking component, and the other end abuts against the second drive sleeve 42. In this embodiment, the spring element includes a spring but not a torsion spring, providing torsional resistance. The first drive sleeve 32 is sleeved on the rotating shaft 1 and slides with it, providing good sliding performance. A washer is also sleeved on the rotating shaft 1, located between the spring element and the blocking component. The shim has a through hole in the middle that matches the diameter of the rotating shaft 1. The shim not only reduces direct contact between the spring element and the blocking element but also enhances the elasticity of the spring element. Both the snap-fit ​​sleeve 33 and the cam sleeve 43 are fitted onto the rotating shaft 1 and rotatably connected to it, ensuring they can rotate freely around the rotating shaft 1. The snap-fit ​​sleeve 33 abuts against the fixing member 2 to restrict its axial movement, ensuring that it can only rotate around the rotating shaft 1 without axial displacement, thus guaranteeing its operational stability. The cam sleeve 43 is fixedly connected to the fixing member 2, allowing it to remain relatively stationary, providing a stable foundation for subsequent engagement with the second drive sleeve 42. Specifically, the bottom of the cam sleeve 43 has an integrally formed insert, and the fixing member 2 has a groove that mates with the insert. (Refer to...) Figure 1 and Figure 3 In this design, the first driving sleeve 32 and the second driving sleeve 42 are fitted onto the rotating shaft 1 and rotate synchronously with it. A rotating locking mechanism 5 is provided between the first driving sleeve 32 and the locking sleeve 33, allowing them to rotate relative to each other. When the first driving sleeve 32 and the locking sleeve 33 rotate relative to each other, the first driving sleeve 32 drives the locking sleeve 33 to rotate synchronously. This arrangement ensures that the rotation of the rotating shaft 1 is transmitted to the locking sleeve 33 in an orderly manner, achieving effective force transmission and conversion. (Refer to...) Figure 1 and Figure 3Furthermore, a convex-concave fitting mechanism 6 is provided between the second drive sleeve 42 and the cam sleeve 43, and they can rotate relative to each other. When the second drive sleeve 42 and the cam sleeve 43 rotate relative to each other, the second drive sleeve 42 can move axially along the rotation axis 1. This axial movement design allows the device to better adapt to different states during opening and closing, achieving stable opening and closing operations. When the convex and concave parts of the convex-concave fitting mechanism 6 are opposite each other, it is the open position of the flipping part; when the concave and convex parts of the convex-concave fitting mechanism 6 are interlocked, it is the closed position of the flipping part. Through this simple and effective design, the open and closed states of the flipping part are clearly defined, facilitating user operation. The first elastic component 31 is sleeved on the rotation axis 1 and acts on the snap-fit ​​sleeve 33 to drive the snap-fit ​​sleeve 33 to tend to move towards the first drive sleeve 32. This allows the snap-fit ​​sleeve 33 to maintain a tight fit with the first drive sleeve 32 during rotation, preventing loosening. The second elastic component 41 is sleeved on the rotating shaft 1 and acts on the second driving sleeve 42 to drive the second driving sleeve 42 to tend to move towards the cam sleeve 43, ensuring close contact between the second driving sleeve 42 and the cam sleeve 43, and providing a guarantee for the stable operation of the convex-concave mating mechanism 6. (Refer to...) Figure 4 and Figure 5 Specifically, the rotating snap-fit ​​mechanism 5 includes arc-shaped protrusions 51 and arc-shaped grooves 52. Two arc-shaped protrusions 51 extend from the side of the first drive sleeve 32 near the snap-fit ​​sleeve 33, and the snap-fit ​​sleeve 33 is provided with arc-shaped grooves 52 that mate with the arc-shaped protrusions 51. The arc-shaped grooves 52 are precisely machined to ensure the fitting accuracy with the arc-shaped protrusions 51. When the first drive sleeve 32 rotates with the rotating shaft 1, the arc-shaped protrusions 51 can rotate and slide within the arc-shaped grooves 52. The arc-shaped protrusions 51 can also be replaced with other shapes such as trapezoidal protrusions, as long as a similar fitting effect to the arc-shaped grooves 52 can be achieved. The snap-fit ​​sleeve 33 is provided with a receiving groove 331, and one end of the first elastic component 31 is embedded in the receiving groove 331. The design of the receiving groove 331 allows the first elastic component 31 to be stably installed on the snap-fit ​​sleeve 33, ensuring the effective performance of its elastic function. The shape of the receiving groove 331 can be designed according to the end shape of the first elastic component 31 to ensure a tight fit. In this embodiment, the first elastic component 31 is a spring. (Refer to...) Figure 6Furthermore, the concave-convex mating mechanism 6 includes a first flange 61 and a first groove 62. The first flange 61 is disposed on the cam sleeve 43, and the first groove 62 is disposed on the second drive sleeve 42. The shape of the first flange 61 is adapted to the shape of the first groove 62. The surface of the first flange 61 can be polished to reduce friction with the first groove 62 and improve the service life of the device. The first flange 61 includes a first end face, which is a plane, a curved surface, or an arc-shaped surface. Both sides of the first flange 61 are provided with multiple slope segments with different inclinations. The surface of each slope segment is a plane, a curved surface, or an arc-shaped surface. One side of the first flange 61 includes a first slope segment 611, a second slope segment 612, and a third slope segment 613 arranged sequentially. The first slope segment 611 is a steep slope, the second slope segment 612 is a plane, and the third slope segment 613 is a gentle slope. The slope length of the first slope segment 611 is less than the slope length of the third slope segment 613, and the inclination of the steep slope is greater than the inclination of the gentle slope. An angled connection 614 is provided at the connection points of adjacent first slope sections 611 and third slope sections 613. This design allows the convex-concave mating mechanism 6 to switch between convex and concave positions more smoothly during operation, improving the operational performance of the device. (Refer to...) Figure 7Specifically, in this embodiment, the fixing member 2 is sleeved on the rotating shaft 1. The fixing member 2 provides a stable support foundation for the entire device, allowing the rotating shaft 1 to rotate stably within its defined range. The fixing member 2 includes a first collar 21, a second collar 22, and a connecting rod 23. The first collar 21 and the second collar 22 are spaced apart and sleeved on the rotating shaft 1. The first collar 21 abuts against the annular abutment portion 11 of the rotating shaft 1 and the first elastic component 31. The second collar 22 is located between the cam sleeve 43 and the first drive sleeve 32. The connecting rod 23 is connected to the bottom of the two collars respectively and is used for fixed connection with the second flipping member 8. The first collar 21 and the second collar 22 can be made of lightweight materials such as plastic, which can ensure a certain strength while reducing the overall weight. The connecting rod 23 is also made of plastic to ensure that it can firmly connect the two collars and fix them to the second flipping member 8. In this embodiment, the first collar 21, the second collar 22, and the connecting rod 23 are integrally formed, simplifying the manufacturing process. In this embodiment, a gasket is also provided between the second collar 22 and the cam sleeve 43. A limiting block 24 protrudes from the connecting rod 23 near the snap-fit ​​sleeve 33. The snap-fit ​​sleeve 33 is provided with a limiting groove 332 that cooperates with the limiting block 24. The limiting block 24 can rotate and slide within the limiting groove 332, limiting the snap-fit ​​sleeve 33 from moving away from the first driving sleeve 32. The limiting block 24 and the limiting groove 332 further enhance the stability of the snap-fit ​​sleeve 33's movement. The limiting block 24 can be square, circular, or other shapes, as long as it can effectively cooperate with the limiting groove 332. When the limiting block 24 slides to the lower end of the limiting groove 332, the flipping component is in the closed position. At this time, the first driving sleeve 32 is restricted from rotation, ensuring the stability of the device in the closed state. In this embodiment, the connecting rod 23 is provided with a mounting hole and a wire hole for connecting the second flipping component 8 and the power cord.Specifically, when the flipper is in the closed position, the concave and convex parts of the convex-concave mating mechanism 6 are interlocked, and the convex part of the cam sleeve 43 is engaged with the angled connection part 614 of the second drive sleeve 42. The arc-shaped protrusion 51 of the first drive sleeve 32 is at the lower end of the arc-shaped groove 52 of the locking sleeve 33, and the limiting block 24 of the fixing member 2 abuts against the end of the limiting groove 332 of the locking sleeve 33, so that the locking sleeve 33 can rotate around the rotation axis 1 in a vertically upward tangential direction, that is, in the direction of opening and closing. The arc-shaped protrusion 51 can slide within the arc-shaped groove 52 at a distance corresponding to the state of 0°-10°. When the flipper is opened to 0°-90°, the convex and convex parts of the convex-concave mating mechanism 6 are aligned to open the flipper. When the cam sleeve 43 is in the open position, that is, the convex part of the cam sleeve 43 is exactly at the second slope section 612 of the second drive sleeve 42. The arc-shaped protrusion 51 of the first drive sleeve 32 engages in the arc-shaped groove 52, driving the engaging sleeve 33 to rotate together, thereby deforming the first elastic component 31 and generating a compressive force on the engaging sleeve 33. When the flipping part is opened to 90°-145°, the convex part of the cam sleeve 43 is exactly at the third slope section 613 of the second drive sleeve 42. The arc-shaped protrusion 51 of the first drive sleeve 32 engages in the arc-shaped groove 52, driving the engaging sleeve 33 to rotate together until the limiting block 24 slides to the end of the limiting groove 332, thereby deforming the first elastic component 31 and generating a compressive force on the engaging sleeve 33. The implementation principle of this embodiment is as follows: Basic structure: One end of the rotating shaft 1 has a plug-in part 12, which can be plugged into the first flipping part 7. The other end of the plug-in part 12 is fitted with a torque mechanism 3 and a damping mechanism 4, with an annular abutment part 11 between them. The fixing part 2 is fitted on the rotating shaft 1 to provide stable support for the device, including an integrally formed first collar 21, a second collar 22, and a connecting rod 23, mostly made of plastic. Torque mechanism 3: It consists of a first elastic component 31, a first driving sleeve 32, and a snap-fit ​​sleeve 33. The first elastic component 31 includes a blocking component (such as a nut) and a spring element (spring only, excluding torsion spring). The spring element is fitted on the rotating shaft 1, with one end abutting against the blocking component and the other end abutting against the second driving sleeve 42, with a washer between them. The first driving sleeve 32 is slidably engaged with the rotating shaft 1, and the snap-fit ​​sleeve 33 is rotatably connected to the rotating shaft 1, abutting against the fixing part 2 to restrict axial movement. A rotating locking mechanism 5 (such as an arc-shaped protrusion 51 and an arc-shaped groove 52) is provided between the first driving sleeve 32 and the locking sleeve 33. The first elastic component 31 drives the locking sleeve 33 to approach the first driving sleeve 32. The damping mechanism 4 consists of a second elastic component 41, a second driving sleeve 42, and a cam sleeve 43. The cam sleeve 43 is fixedly connected to the fixing member 2, and there is a block and groove mating structure between them. There is a concave-convex mating mechanism 6 (such as a first flange 61 and a first groove 62) between the second driving sleeve 42 and the cam sleeve 43. The first flange 61 has various shape designs. The second elastic component 41 drives the second driving sleeve 42 to approach the cam sleeve 43.Opening and closing process: Closed position: The concave and convex parts of the concave-convex mating mechanism 6 are inserted into each other. The convex part of the cam sleeve 43 is engaged with the angled connection part 614 of the second drive sleeve 42. The arc-shaped protrusion 51 of the first drive sleeve 32 is at the lower end of the arc-shaped groove 52 of the locking sleeve 33. The limiting block 24 of the fixing member 2 abuts against the end of the limiting groove 332 of the locking sleeve 33. The locking sleeve 33 can rotate in the opening and closing direction. The sliding distance of the arc-shaped protrusion 51 corresponds to the 0°-10° state. Open position (0°-90°): The convex and convex parts of the concave-convex mating mechanism 6 are opposite each other. The convex part of the cam sleeve 43 is at the second slope section 612 of the second drive sleeve 42. The arc-shaped protrusion 51 of the first drive sleeve 32 engages with the arc-shaped groove 52, driving the locking sleeve 33 to rotate. The deformation of the first elastic component 31 generates a compressive force. Open position (90°-145°): The cam sleeve 43 protrudes at the third slope section 613 of the second drive sleeve 42. The arc-shaped protrusion 51 of the first drive sleeve 32 engages with the arc-shaped groove 52, driving the engaging sleeve 33 to rotate until the limiting block 24 slides to the end of the limiting groove 332, and the first elastic component 31 deforms to generate extrusion force.

[0022] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rotary connection device, characterized in that It includes a rotating shaft (1) for fixed connection with the first flipping member (7), a fixing member (2) for fixed connection with the second flipping member (8), and a torque mechanism (3) and a damping mechanism (4) sleeved on the rotating shaft (1). The fixing member (2) is sleeved on the rotating shaft (1). The torque mechanism (3) includes a first elastic component (31), a first drive sleeve (32), and a snap-fit ​​sleeve (33). The damping mechanism (4) includes a second elastic component (41), a second drive sleeve (42), and a cam sleeve (43). The snap-fit ​​sleeve... (33) Both the cam sleeve (43) and the cam sleeve (43) are sleeved on the rotating shaft (1) and rotatably connected to the rotating shaft (1). The snap-fit ​​sleeve (33) abuts against the fixing member (2) to restrict the axial movement of the snap-fit ​​sleeve (33). The cam sleeve (43) is fixedly connected to the fixing member (2). The first drive sleeve (32) and the second drive sleeve (42) are sleeved on the rotating shaft (1) and rotate synchronously with the rotating shaft (1). A rotating snap-fit ​​mechanism is provided between the first drive sleeve (32) and the snap-fit ​​sleeve (33). 5) And can rotate relative to each other. When the first drive sleeve (32) and the snap-fit ​​sleeve (33) rotate relative to each other, the first drive sleeve (32) drives the snap-fit ​​sleeve (33) to rotate synchronously; a concave-convex fitting mechanism (6) is provided between the second drive sleeve (42) and the cam sleeve (43) and can rotate relative to each other. When the second drive sleeve (42) and the cam sleeve (43) rotate relative to each other, the second drive sleeve (42) can move axially along the rotation axis (1); when the convex part of the concave-convex fitting mechanism (6) is opposite to the convex part, it is a flipping mechanism. The rotating part is in the open position, and when the concave and convex parts of the concave-convex mating mechanism (6) are inserted into each other, it is in the closed position of the flipping part; the first elastic component (31) is sleeved on the rotating shaft (1) and acts on the snap-fit ​​sleeve (33) to drive the snap-fit ​​sleeve (33) to have a tendency to move towards the first driving sleeve (32); the second elastic component (41) is sleeved on the rotating shaft (1) and acts on the second driving sleeve (42) to drive the second driving sleeve (42) to have a tendency to move towards the cam sleeve (43).

2. The rotary connection of claim 1, wherein The rotating snap-fit ​​mechanism (5) includes an arc-shaped protrusion (51) and an arc-shaped groove (52). The first drive sleeve (32) has two arc-shaped protrusions (51) extending from the side of the snap-fit ​​sleeve (33) near the first drive sleeve (32). The snap-fit ​​sleeve (33) is provided with an arc-shaped groove (52) that cooperates with the arc-shaped protrusions (51). When the first drive sleeve (32) rotates with the rotating shaft (1), the arc-shaped protrusions (51) can rotate and slide within the arc-shaped groove (52).

3. The rotary connection of claim 1, wherein, The fixing member (2) includes a first collar (21), a second collar (22) and a connecting rod (23). The first collar (21) and the second collar (22) are both sleeved on the rotating shaft (1). The first collar (21) is located at the end of the first elastic component (31) away from the snap sleeve (33). The second collar (22) is located between the first driving sleeve (32) and the cam sleeve (43). The connecting rod (23) is connected to the bottom of the two collars respectively and is used to fix them to the second flipping member (8).

4. The rotating connection device according to claim 3, characterized in that, The connecting rod (23) extends and protrudes a limiting block (24) near the snap-fit ​​sleeve (33). The snap-fit ​​sleeve (33) is provided with a limiting groove (332) that cooperates with the limiting block (24). The limiting block (24) can rotate and slide in the limiting groove (332). The limiting block (24) is used to restrict the snap-fit ​​sleeve (33) from moving in a direction away from the first driving sleeve (32) from the axis. When the limiting block (24) slides to the lower end of the limiting groove (332), it is in the closed position of the flip-up part, and the first driving sleeve (32) is restricted from rotating.

5. The rotary connection of claim 3, wherein, The rotating shaft (1) is provided with an abutment portion (11), and the first collar (21) is located between the abutment portion (11) and the first elastic component (31), and abuts against the abutment portion (11).

6. The rotary connection of claim 3, wherein, The snap sleeve (33) is provided with a receiving groove (331), and the end of the first elastic component (31) away from the first collar (21) is embedded in the receiving groove (331).

7. A rotary connection according to any one of claims 1-6, characterized in that The concave-convex mating mechanism (6) includes a first flange (61) and a first groove (62). The first flange (61) is disposed on the cam sleeve (43), and the first groove (62) is disposed on the second drive sleeve (42). The shape of the first flange (61) is adapted to the shape of the first groove (62).

8. The rotary connection of claim 7, wherein, The first flange (61) includes a first end face, which is a plane, a curved surface or an arc surface. Both sides of the first flange (61) are provided with multiple slopes with different inclinations, and the surface of each slope is a plane, a curved surface or an arc surface.

9. The rotary connection of claim 8, wherein, One side of the first flange (61) is successively a first slope (611), a second slope (612) and a third slope (613). The first slope (611) is a steep slope, the second slope (612) is a plane, and the third slope (613) is a gentle slope. The slope length of the first slope (611) is less than the slope length of the third slope (613), and the inclination of the steep slope is greater than the inclination of the gentle slope.

10. The rotary connection of claim 9, wherein, An angled connection (614) is provided at the connection points of two adjacent first slope segments (611) and third slope segments (613).

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