Multipurpose notebook computer support

Abstract

The utility model discloses a multipurpose notebook computer support. The support comprises a center disc, a connecting base fixedly connected with the bottom of the center disc, a first adapter which is rotatably connected with the connecting base and located on the first side of the connecting base, and a second adapter which is rotatably connected with the connecting base and located on the second side of the connecting base. The first supporting arm and the second supporting arm are rotatably installed on the first adapter piece, the third supporting arm and the fourth supporting arm are rotatably installed on the second adapter piece, and the first adapter piece and the second adapter piece can rotate around the connecting base and get close to each other or get away from each other. The first supporting arm and the second supporting arm can rotate on the same plane of the first adapter and get close to each other or get away from each other, and the third supporting arm and the fourth supporting arm can rotate on the same plane of the second adapter and get close to each other or get away from each other. The central disc is provided with a magnetic attraction piece which can be used for magnetically attracting a mobile phone.

Description

Technical Field

[0001] This utility model relates to the field of laptop stands, and more specifically, to a multi-purpose laptop stand. Background Technology

[0002] With the popularization of the Internet, people's work and lifestyles have undergone tremendous changes. As an Internet terminal, laptops have become one of the most important tools in people's work and life. Prolonged use of laptops can easily cause tension and strain of the muscles around the cervical spine, as well as degeneration of the intervertebral discs and small joints. As a result, laptop stands have emerged.

[0003] Laptop stands not only raise the laptop screen to prevent users from looking down, but also detach the bottom of the laptop from the desktop, increasing the laptop's heat dissipation. However, existing laptop stands are bulky, difficult to store, and inconvenient to carry, and cannot be easily put into a storage bag with the laptop, which has significant limitations.

[0004] At the same time, laptop stands can generally only be used to support laptops and cannot be used to support other electronic devices, which limits their usage scenarios and causes a waste of resources. Utility Model Content

[0005] This utility model addresses the aforementioned deficiencies of the prior art by providing a multi-purpose laptop stand.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a multi-purpose notebook stand is constructed, the stand includes a central plate, a connecting base fixedly connected to the bottom of the central plate, a first adapter rotatably connected to the connecting base and located on a first side of the connecting base, a second adapter rotatably connected to the connecting base and located on a second side of the connecting base, a first support arm and a second support arm rotatably mounted on the first adapter, and a third support arm and a fourth support arm rotatably mounted on the second adapter. The first adapter and the second adapter can rotate around the connecting base and move closer to or further away from each other. The first support arm and the second support arm can rotate on the same plane on the first adapter and move closer to or further away from each other. The third support arm and the fourth support arm can rotate on the same plane on the second adapter and move closer to or further away from each other.

[0007] The center plate has a magnetic attachment that can be used to attach a mobile phone.

[0008] In the multi-purpose notebook stand described in this utility model, the connector is provided with a first shaft hole that passes through the connector, and a first rotating shaft that can rotatably pass through the first shaft hole is provided in the first shaft hole. The first adapter and the second adapter are both rotatably connected to the first rotating shaft.

[0009] In the multi-purpose notebook stand of this utility model, the first adapter includes a first connecting plate, a first bearing and a second bearing fixed on the first connecting plate; when the first adapter is rotatably connected to the first rotating shaft, the first bearing and the second bearing are respectively located at both ends of the connecting plate;

[0010] The first bearing seat is provided with a second bearing hole through which the first end of the first rotating shaft can rotate, and the second bearing seat is provided with a third bearing hole through which the second end of the first rotating shaft can rotate.

[0011] In the multi-purpose notebook stand of this utility model, the second adapter includes a second connecting plate, a third bearing and a fourth bearing fixed on the second connecting plate; when the second adapter is rotatably connected to the first rotating shaft, the third bearing and the fourth bearing are respectively located at both ends of the connecting plate;

[0012] The third bearing is provided with a fourth bearing hole through which the first end of the first rotating shaft can rotate, and the fourth bearing is provided with a fifth bearing hole through which the second end of the first rotating shaft can rotate.

[0013] In the multi-purpose notebook stand of this utility model, damping sleeves are provided in the first shaft hole and the fourth shaft hole, or the first shaft hole and the fifth shaft hole, and one end of the first rotating shaft is provided with knurling that mates with the second shaft hole or the third shaft hole.

[0014] Alternatively, damping pads may be provided between the first bearing, the third bearing, the connecting seat, the fourth bearing, and the second bearing. One end of the first rotating shaft may be provided with a nut and a nut groove, and the other end of the first rotating shaft may be provided with a thread. The first bearing or the second bearing may be provided with a threaded hole for threaded connection and locking.

[0015] In the multi-purpose notebook stand of this utility model, the first side of the first connecting plate is provided with a first limiting protrusion that limits the rotation angle of the first support arm, the second side of the first connecting plate is provided with a second limiting protrusion that limits the rotation angle of the second support arm, the first side of the second connecting plate is provided with a third limiting protrusion that limits the rotation angle of the third support arm, and the second side of the second connecting plate is provided with a fourth limiting protrusion that limits the rotation angle of the fourth support arm.

[0016] The first connecting plate is provided with a first limiting stage that restricts the second connecting plate from continuing to rotate when the second connecting plate rotates to a horizontal position with the first connecting plate, and / or the second connecting plate is provided with a second limiting stage that restricts the first connecting plate from continuing to rotate when the first connecting plate rotates to a horizontal position with the second connecting plate.

[0017] In the multi-purpose notebook stand described in this utility model, the first end of the first support arm is rotatably connected to the first connecting plate via a second rotating shaft, the first end of the second support arm is rotatably connected to the first connecting plate via a third rotating shaft, the first end of the third support arm is rotatably connected to the second connecting plate via a fourth rotating shaft, and the first end of the fourth support arm is rotatably connected to the second connecting plate via a fifth rotating shaft.

[0018] The first rotating shaft is arranged parallel to the central disk, and the second, third, fourth and fifth rotating shafts are all arranged perpendicular to the first rotating shaft.

[0019] In the multi-purpose notebook stand described in this utility model, the magnetic component is a circular magnetic component or an annular magnetic component, and the central plate is provided with a circular groove or annular groove for fixing and accommodating the magnetic component.

[0020] In the multi-purpose notebook stand described in this utility model, the first end of the first support arm, the second support arm, the third support arm and the fourth support arm are all provided with a recess for accommodating the central disk, and the second end of the first support arm, the second support arm, the third support arm and the fourth support arm are all provided with a boss.

[0021] When the first adapter and the second adapter are rotated to be flush with or abut against the bottom surface of the center disk, the center disk is housed in the recess, and the top surface of the center disk is basically flush with or slightly lower than the top surface of the boss, and a silicone pad is attached to the top surface of the boss.

[0022] In the multi-purpose notebook stand described in this utility model, the first support arm and the second support arm each include an arm body, a first support rod rotatably connected to the bottom of the first end of the arm body, and a second support rod rotatably connected to the middle of the arm body. The first support rod is provided with a plurality of stop grooves that allow the end of the second support rod to abut against.

[0023] The first support rod is rotatably connected to the arm body via a sixth pivot, and the second support rod is rotatably connected to the arm body via a seventh pivot. A first torsion spring that can push the first support rod toward the arm body is sleeved on the sixth pivot, and a second torsion spring that can push the second support rod toward the arm body is sleeved on the seventh pivot.

[0024] Both the third and fourth support arms include an arm body and a stop that can be flipped up and down and is disposed at the second end of the arm body. The stop is rotatably connected to the arm body through an eighth pivot, and the arm body is provided with a receiving groove for accommodating the stop.

[0025] The multi-purpose laptop stand of this invention has the following advantages: When using the multi-purpose laptop stand of this invention, the first and second adapters can be rotated open around the connecting base. Then, the first, second, third, and fourth support arms can be rotated to form an X shape. At this time, the laptop can be placed on the support surface formed by the central plate, the first, second, third, and fourth support arms, and the laptop is supported by the central plate, the first, second, third, and fourth support arms, making it convenient for the user. When it is necessary to use this stand to support a mobile phone, the central plate can be rotated close to the second adapter, the first adapter can be rotated to form a certain angle with the central plate, the first and second support arms can be opened, and the third and fourth support arms can be opened. Then, the mobile phone can be placed on the central plate, and the magnetic parts on the central plate can hold the mobile phone in place. The first, second, third, and fourth support arms support the central plate, making it convenient for the user to view the mobile phone screen. The stand of this application can be used to support both laptops and mobile phones. In outdoor activities, the mobile phone can also be connected to the central plate and used as a selfie stick by holding the support arm. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the first state structure of the multi-purpose laptop stand of this utility model;

[0028] Figure 2 This is a schematic diagram of the second state structure of the multi-purpose notebook stand of this utility model;

[0029] Figure 3 This is a schematic diagram of the bottom structure of the multi-purpose notebook stand of this utility model;

[0030] Figure 4 This is an exploded structural diagram of the multi-purpose laptop stand of this utility model. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0032] like Figure 1-4As shown, in the first embodiment of the multi-purpose notebook stand of this utility model, the stand 10 includes a central disk 11, a connecting seat 12 fixedly connected to the bottom of the central disk 11, a first adapter 13 rotatably connected to the connecting seat 12 and located on the first side of the connecting seat 12, a second adapter 14 rotatably connected to the connecting seat 12 and located on the second side of the connecting seat 12, a first support arm 15 and a second support arm 16 rotatably mounted on the first adapter 13, and a third support arm 17 and a fourth support arm 18 rotatably mounted on the second adapter 14. The first adapter 13 and the second adapter 14 can rotate around the connecting seat 12 and move closer to or further away from each other. The first support arm 15 and the second support arm 16 can rotate on the same plane on the first adapter 13 and move closer to or further away from each other. The third support arm 17 and the fourth support arm 18 can rotate on the same plane on the second adapter 14 and move closer to or further away from each other.

[0033] The central disc 11 is provided with a magnetic attachment 19 for magnetically attaching a mobile phone. Preferably, the magnetic attachment 19 is a MagSafe magnetic ring.

[0034] Understandably, the center plate 11 is generally a flat circular or square plate. The connecting seat 12 is fixed to the center of the bottom surface of the center plate 11 by screws or bolts. In other embodiments, the center plate 11 and the connecting seat 12 may also be integrally formed.

[0035] When using the multi-purpose laptop stand of this utility model, the first adapter 13 and the second adapter 14 can be rotated open around the connecting base 12. Then, the first support arm 15, the second support arm 16, the third support arm 17, and the fourth support arm 18 can be rotated to form an X shape. At this time, the laptop can be placed on the support surface formed by the central plate 11, the first support arm 15, the second support arm 16, the third support arm 17, and the fourth support arm 18. The laptop is supported by the central plate 11, the first support arm 15, the second support arm 16, the third support arm 17, and the fourth support arm 18, which is convenient for users. When using the stand 10 to support a mobile phone, the central plate 11 can be rotated close to the second adapter 14, the first adapter 13 can be rotated to form a certain angle with the central plate 11, the first support arm 15 and the second support arm 16 can be opened, and the third support arm 17 and the fourth support arm 18 can be opened. Then, the mobile phone can be placed on the central plate 11, and the magnetic part 19 on the central plate 11 will hold the mobile phone in place. The first support arm 15, the second support arm 16, the third support arm 17 and the fourth support arm 18 will support the central plate 11, making it convenient for the user to view the mobile phone screen. The stand 10 of this application can be used to support both laptops and mobile phones. In outdoor activities, the mobile phone can also be connected to the central plate 11 and used as a selfie stick by holding the support arm.

[0036] When storing, the first support arm 15 and the second support arm 16 can be rotated to be fully close together, the third support arm 17 and the fourth support arm 18 can be rotated to be fully close together, and the first adapter 13 and the second adapter 14 can be rotated to be fully close together, thereby realizing the folding of the bracket 10 and reducing the volume of the bracket 10.

[0037] When the stand 10 is used to support the laptop, the stand 10 can be rotated and unfolded as follows: Figure 1 The state shown. When the stand 10 is used to support the phone, the stand 10 can be rotated and unfolded as shown. Figure 2 The state shown.

[0038] In this embodiment, the connecting seat 12 has a first shaft hole 20 passing through it, and a first rotating shaft 21 rotatably passes through the first shaft hole 20. The first adapter 13 and the second adapter 14 are both rotatably connected to the first rotating shaft 21. Preferably, the length (axis) direction of the first shaft hole 20 is parallel to the central disk 11. After the first rotating shaft 21 is inserted into the first shaft hole 20, both ends of it extend beyond the first shaft hole 20, and the first rotating shaft 21 can rotate within the first shaft hole 20.

[0039] Specifically, such as Figure 3 , 4 As shown, the first adapter 13 includes a first connecting plate 22, a first bearing 24 and a second bearing 25 fixed on the first connecting plate 22; when the first adapter 13 is rotatably connected to the first rotating shaft 21, the first bearing 24 and the second bearing 25 are respectively located at both ends of the connecting seat 12.

[0040] The first bearing seat 24 is provided with a second shaft hole through which the first end of the first rotating shaft 21 can rotate, and the second bearing seat 25 is provided with a third shaft hole through which the second end of the first rotating shaft 21 can rotate.

[0041] Similarly, the second adapter 14 includes a second connecting plate 23, a third bearing 26 and a fourth bearing 27 fixed on the second connecting plate 23; when the second adapter 14 is rotatably connected to the first rotating shaft 21, the third bearing 26 and the fourth bearing 27 are respectively located at both ends of the connecting seat 12.

[0042] The third bearing 26 is provided with a fourth shaft hole through which the first end of the first rotating shaft 21 can rotate, and the fourth bearing 27 is provided with a fifth shaft hole through which the second end of the first rotating shaft 21 can rotate.

[0043] After assembly, the first adapter 13 and the second adapter 14 can rotate around the first pivot 21 respectively. At the same time, the center plate 11 and the connecting seat 12 can also rotate around the first pivot 21. After the mobile phone is magnetically attached to the center plate 11, the angle of the mobile phone screen can be adjusted by rotating the center plate 11, which is more convenient for users.

[0044] In one embodiment, damping sleeves are provided in both the first shaft hole 20 and the fourth shaft hole, or both the first shaft hole 20 and the fifth shaft hole. One end of the first rotating shaft 21 is provided with knurling that mates with the second or third shaft hole. By providing damping sleeves, after the damping sleeves are fitted between the shaft hole and the first rotating shaft 21, it is possible to prevent the first adapter 13 and the second adapter 14 from easily rotating relative to the first rotating shaft 21, and also to prevent the first rotating shaft 21 from coming out of the first shaft hole 20, the second shaft hole, the third shaft hole, the fourth shaft hole, and the fifth shaft hole. Furthermore, through the knurling and mating with the second or third shaft hole, during the rotation of the first adapter 13, the first adapter 13 can drive the first rotating shaft 21 to rotate through the knurling, and then the resistance between the first rotating shaft 21 and the damping sleeve increases the rotational friction.

[0045] In other embodiments, damping pads are provided between the first bearing seat 24, the third bearing seat 26, the connecting seat 12, the fourth bearing seat 27, and the second bearing seat 25. One end of the first rotating shaft 21 is provided with a nut and a nut groove, and the other end of the first rotating shaft 21 is provided with a thread. The first bearing seat 24 or the second bearing seat 25 is provided with a threaded hole for threaded connection and locking.

[0046] When connecting the first adapter 13 and the second adapter 14, the first rotating shaft 21 is sequentially inserted into the first bearing seat 24, the third bearing seat 26, the connecting seat 12, the fourth bearing seat 27, and the second bearing seat 25. Then, it is threaded into the threaded hole inside the second bearing seat 25, while the nut abuts against the outer end face of the first bearing seat 24 at the other end, thus locking the first bearing seat 24, the third bearing seat 26, the connecting seat 12, the fourth bearing seat 27, and the second bearing seat 25. During rotation, the damping pads located between the first bearing seat 24, the third bearing seat 26, the connecting seat 12, the fourth bearing seat 27, and the second bearing seat 25 increase the resistance to rotation between them.

[0047] To limit the rotation angles of the first support arm 15, the second support arm 16, the third support arm 17, and the fourth support arm 18, the first connecting plate 22 has a first limiting protrusion 29 on its first side to limit the rotation angle of the first support arm 15, the second connecting plate 22 has a second limiting protrusion on its second side to limit the rotation angle of the second support arm 16, the first connecting plate 23 has a third limiting protrusion 30 on its first side to limit the rotation angle of the third support arm 17, and the second connecting plate 23 has a fourth limiting protrusion 31 on its second side to limit the rotation angle of the fourth support arm 18.

[0048] Furthermore, the first connecting plate 22 is provided with a first limiting platform that restricts the second connecting plate 23 from continuing to rotate when the second connecting plate 23 rotates to a horizontal position with the first connecting plate 22, and / or the second connecting plate 23 is provided with a second limiting platform that restricts the first connecting plate 22 from continuing to rotate when the first connecting plate 22 rotates to a horizontal position with the second connecting plate 23.

[0049] When the first connecting plate 22 and the second connecting plate 23 rotate to a horizontal position, the first limiting platform abuts against the second connecting plate 23, or the second limiting platform abuts against the first connecting plate 22, restricting the first connecting plate 22 and the second connecting plate 23 from continuing to rotate.

[0050] Specifically, the first end of the first support arm 15 is rotatably connected to the first connecting plate 22 via the second rotating shaft 32, the first end of the second support arm 16 is rotatably connected to the first connecting plate 22 via the third rotating shaft 33, the first end of the third support arm 17 is rotatably connected to the second connecting plate 23 via the fourth rotating shaft 34, and the first end of the fourth support arm 18 is rotatably connected to the second connecting plate 23 via the fifth rotating shaft 35.

[0051] Preferably, the first rotating shaft 21 is arranged parallel to the central disk 11, and the second rotating shaft 32, the third rotating shaft 33, the fourth rotating shaft 34 and the fifth rotating shaft 35 are all arranged perpendicular to the first rotating shaft 21.

[0052] In this embodiment, the magnetic suction member 19 is a circular magnetic suction member 19 or an annular magnetic suction member 19, and the central disk 11 is provided with a circular groove or annular groove for fixing and accommodating the magnetic suction member 19.

[0053] Preferably, the magnetic attractor 19 is a Magsafe magnetic attractor ring, the central disk 11 is provided with an annular groove, and the central disk 11 is also provided with an annular cover that covers the Magsafe magnetic attractor ring and the annular groove.

[0054] Furthermore, the first end of the first support arm 15, the second support arm 16, the third support arm 17 and the fourth support arm 18 are all provided with a recess 36 for the central disk 11 to be accommodated, and the second end of the first support arm 15, the second support arm 16, the third support arm 17 and the fourth support arm 18 are all provided with a boss 37.

[0055] When the first adapter 13 and the second adapter 14 are rotated to be flush with or abut against the bottom surface of the center disk 11, the center disk 11 is housed in the recess 36, and the top surface of the center disk 11 is basically flush with or slightly lower than the top surface of the boss 37, and a silicone pad is attached to the top surface of the boss 37.

[0056] After attaching the silicone pad to the top surface of the boss 37, the surface of the silicone pad is flush with or slightly higher than the surface of the central disk 11, and the surface of the silicone pad is 0.2-1 mm higher than the surface of the central disk 11.

[0057] Rotate bracket 10 as follows Figure 1 In the supported state shown, the surface of the central disk 11 is basically flush with the surface of the boss 37, which can support the laptop more stably.

[0058] In this embodiment, both the first support arm 15 and the second support arm 16 include an arm body, a first support rod 38 rotatably connected to the bottom of the first end of the arm body, and a second support rod 39 rotatably connected to the middle of the arm body. The first support rod 38 is provided with a plurality of stop grooves 44 for the end of the second support rod 39 to abut against.

[0059] The first support rod 38 is rotatably connected to the arm body via a sixth pivot 40, and the second support rod 39 is rotatably connected to the arm body via a seventh pivot 41. A first torsion spring 42 is sleeved on the sixth pivot 40 to push the first support rod 38 toward the arm body, and a second torsion spring 43 is sleeved on the seventh pivot 41 to push the second support rod 39 toward the arm body.

[0060] When supporting a laptop, the first support rod 38 can be rotated open around the sixth pivot 40, and the second support rod 39 can be rotated open around the seventh pivot 41. The second end of the first support rod 38 can be brought into contact with the desktop and adjusted to the required height. Then, the second end of the second support rod 39 can be inserted into the corresponding stop slot 44 to achieve tilt support for the first support arm 15 and the second support arm 16.

[0061] When retracting the first support arm 15 and the second support arm 16, simply remove the second support rod 39 from the stop groove 44 of the first support rod 38. Under the elastic restoring force of the first torsion spring 42 and the second torsion spring 43, the first support rod 38 and the second support rod 39 will automatically retract.

[0062] Furthermore, both the third support arm 17 and the fourth support arm 18 include an arm body and a stop 45 that can be flipped up and down and is disposed at the second end of the arm body. The stop 45 is rotatably connected to the arm body through an eighth pivot 46, and the arm body is provided with a receiving groove 47 for receiving the stop 45.

[0063] When using the stand 10, the stop 45 can be flipped upward from the receiving groove 47 to an upward vertical position. When the laptop is placed on the stand 10, the stop 45 can block the bottom of the laptop and prevent the laptop from slipping off the stand 10.

[0064] When supporting a mobile phone, the stop 45 can be flipped downward from the receiving groove 47 to a vertical position. The stop 45 can hook onto other objects, and the bracket 10 can be hung on other objects to support the mobile phone.

[0065] Furthermore, in this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," "stacked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0066] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-purpose notebook stand, characterized by, The bracket includes a central disk, a connecting seat fixedly connected to the bottom of the central disk, a first adapter rotatably connected to the connecting seat and located on a first side of the connecting seat, a second adapter rotatably connected to the connecting seat and located on a second side of the connecting seat, a first support arm and a second support arm rotatably mounted on the first adapter, and a third support arm and a fourth support arm rotatably mounted on the second adapter. The first adapter and the second adapter can rotate around the connecting seat and move closer to or further away from each other. The first support arm and the second support arm can rotate on the same plane on the first adapter and move closer to or further away from each other. The third support arm and the fourth support arm can rotate on the same plane on the second adapter and move closer to or further away from each other. The central disk is equipped with a magnetic attachment that can be used to magnetically attach mobile phones.

2. The multi-purpose notebook stand of claim 1, wherein, The connector has a first shaft hole that passes through it, and a first rotating shaft that can rotatably pass through the first shaft hole is provided in the first shaft hole. The first adapter and the second adapter are both rotatably connected to the first rotating shaft.

3. The multi-purpose notebook stand of claim 2, wherein, The first adapter includes a first connecting plate, a first bearing seat and a second bearing seat fixed on the first connecting plate; when the first adapter is rotatably connected to the first rotating shaft, the first bearing seat and the second bearing seat are respectively located at both ends of the connecting plate; The first bearing seat is provided with a second shaft hole through which the first end of the first rotating shaft can rotate, and the second bearing seat is provided with a third shaft hole through which the second end of the first rotating shaft can rotate.

4. The multi-purpose notebook stand of claim 3, wherein, The second adapter includes a second connecting plate, a third bearing and a fourth bearing fixed on the second connecting plate; when the second adapter is rotatably connected to the first rotating shaft, the third bearing and the fourth bearing are respectively located at both ends of the connecting plate; The third bearing seat is provided with a fourth bearing hole through which the first end of the first rotating shaft can rotate, and the fourth bearing seat is provided with a fifth bearing hole through which the second end of the first rotating shaft can rotate.

5. The multi-purpose notebook stand of claim 4, wherein, A damping sleeve is provided in both the first shaft hole and the fourth shaft hole, or the first shaft hole and the fifth shaft hole, and one end of the first rotating shaft is provided with knurling that mates with the second shaft hole or the third shaft hole; Alternatively, damping pads are provided between the first bearing, the third bearing, the connecting seat, the fourth bearing, and the second bearing. One end of the first rotating shaft is provided with a nut and a nut groove, and the other end of the first rotating shaft is provided with a thread. The first bearing or the second bearing is provided with a threaded hole for the threaded connection and locking.

6. The multi-purpose notebook stand of claim 4, wherein, The first connecting plate has a first limiting protrusion on its first side that limits the rotation angle of the first support arm, a second limiting protrusion on its second side that limits the rotation angle of the second support arm, a third limiting protrusion on its first side that limits the rotation angle of the third support arm, and a fourth limiting protrusion on its second side that limits the rotation angle of the fourth support arm. The first connecting plate is provided with a first limiting platform that restricts the second connecting plate from continuing to rotate when the second connecting plate rotates to a horizontal position with the first connecting plate, and / or the second connecting plate is provided with a second limiting platform that restricts the first connecting plate from continuing to rotate when the first connecting plate rotates to a horizontal position with the second connecting plate.

7. The multi-purpose notebook stand of claim 4, wherein, The first end of the first support arm is rotatably connected to the first connecting plate via a second rotating shaft; the first end of the second support arm is rotatably connected to the first connecting plate via a third rotating shaft; the first end of the third support arm is rotatably connected to the second connecting plate via a fourth rotating shaft; and the first end of the fourth support arm is rotatably connected to the second connecting plate via a fifth rotating shaft. The first rotating shaft is arranged parallel to the central disk, and the second, third, fourth and fifth rotating shafts are all arranged perpendicular to the first rotating shaft.

8. The multi-purpose notebook stand of claim 1, wherein, The magnetic attractor is a circular magnetic attractor or an annular magnetic attractor, and the central disk is provided with a circular or annular groove for fixing and accommodating the magnetic attractor.

9. The multi-purpose notebook stand of claim 1, wherein, The first end of the first support arm, the second support arm, the third support arm and the fourth support arm are all provided with a recess for accommodating the central disk, and the second end of the first support arm, the second support arm, the third support arm and the fourth support arm are all provided with a boss. When the first adapter and the second adapter are rotated to be flush with or abut against the bottom surface of the center disk, the center disk is housed in the recess, and the top surface of the center disk is basically flush with or slightly lower than the top surface of the boss, and a silicone pad is attached to the top surface of the boss.

10. The multi-purpose notebook stand of claim 1, wherein, The first support arm and the second support arm each include an arm body, a first support rod rotatably connected to the bottom of the first end of the arm body, and a second support rod rotatably connected to the middle of the arm body. The first support rod is provided with a plurality of stop slots that can be abutted by the end of the second support rod. The first support rod is rotatably connected to the arm body via a sixth pivot, and the second support rod is rotatably connected to the arm body via a seventh pivot. A first torsion spring that can push the first support rod toward the arm body is sleeved on the sixth pivot, and a second torsion spring that can push the second support rod toward the arm body is sleeved on the seventh pivot. Both the third and fourth support arms include an arm body and a stop that can be flipped up and down and is disposed at the second end of the arm body. The stop is rotatably connected to the arm body through an eighth pivot, and the arm body is provided with a receiving groove for accommodating the stop.

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