A rotating folding stand

Abstract

The utility model provides a kind of rotary folding support, for supporting screen, including fixed base, rotary seat and swing arm, fixed base bottom is equipped with base, rotary seat outside is equipped with mounting seat, for installing screen, the axis of fixed base, rotary seat is penetrated and is equipped with main rotating shaft rotation, swing arm includes fixed support and the connecting rod being mutually parallel and being arranged in the both sides of fixed support, the both sides of two main rotating shafts are respectively fixedly installed with the both side walls of fixed support, first vice rotating shaft is equipped on fixed base, circular rotary disc is rotatably connected between the both sides of rotary seat and fixed support, the both sides of rotary disc are equipped with respectively with two rotary disc frictional cooperation friction plate, second vice rotating shaft is equipped on rotary disc, one end of connecting rod is rotatably connected with first vice rotating shaft, other end is rotatably connected with second vice rotating shaft, realize screen in adjusting process can always keep vertical, realize the effect that screen and swing arm are independently regulated.

Description

Technical Field

[0001] This utility model belongs to the field of screen brackets, specifically relating to a rotating and folding bracket. Background Technology

[0002] A computer is a modern electronic computing machine used for high-speed calculations. It can perform numerical calculations, logical calculations, and has storage and memory functions. It is a modern intelligent electronic device that can run according to programs and automatically and quickly process massive amounts of data. Its application fields have expanded from its initial military and scientific research applications to all sectors of society, forming a huge computer industry, driving technological progress worldwide, and triggering profound social changes. Computers have spread to schools, enterprises and institutions, and entered ordinary people's homes, becoming an indispensable tool in the information society. However, computer stands can only support the computer screen and cannot adjust the angle. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] This utility model provides a rotating and folding stand, which aims to solve the problem that computer stands can only support the computer screen and cannot adjust the angle.

[0005] (2) Technical solution

[0006] This utility model provides a rotating folding bracket for supporting a screen, including a fixed base, a rotating base, and a swing arm. The fixed base has a base at its bottom, and the rotating base has a mounting seat on its outer side for mounting the screen. A main rotating shaft is rotatably mounted through the axis of the fixed base and the rotating base. The swing arm includes a fixed base and connecting rods arranged parallel to each other on both sides of the fixed base. The two main rotating shafts are fixedly mounted to the two side walls of the fixed base. The fixed base has a first auxiliary rotating shaft. Circular rotating disks are rotatably connected to both sides of the rotating base and the fixed base. Friction plates are provided on both sides of the rotating disks, respectively, to rub against the two rotating disks. A second auxiliary rotating shaft is provided on the rotating disk. One end of the connecting rod is rotatably connected to the first auxiliary rotating shaft, and the other end is rotatably connected to the second auxiliary rotating shaft. The rotational friction between one side of the rotating disk and the side wall of the fixed base is less than the rotational friction between the other side of the rotating disk and the friction plate, so that the rotating base and the mounting seat can be independently adjusted in rotation angle during the angle adjustment process of the swing arm.

[0007] Preferably, the rotating disk is provided with an arc-shaped limiting groove, and the rotating seat extends a movable block into the limiting groove, the movable block slidingly engaging within the limiting groove.

[0008] Preferably, the rotating seat has a coaxial mounting cavity, the inner wall of the mounting cavity has a connecting block, the rotating disk extends into the mounting cavity with a connecting plate, and the portion of the main rotating shaft located in the mounting cavity is fitted with a torsion spring, one end of the torsion spring abutting against the connecting block and the other end abutting against the connecting plate.

[0009] Preferably, the fixed base is provided with limit mechanisms on both sides to limit the swing angle of the swing arm.

[0010] Preferably, the limiting mechanism includes two limiting blocks, with a movable groove formed between the two limiting blocks. The side wall of the fixed bracket extends into the movable groove with a movable part, which swings within the movable groove and limits the swing angle of the swing arm.

[0011] Preferably, a spring is provided inside the fixed bracket, one end of the spring is connected to the bottom of the fixed bracket, and the other end of the spring extends obliquely and is connected to the connecting rod.

[0012] Preferably, the bottom of the fixed bracket is provided with a screw hole, and the screw hole is threaded with a screw. The coil at one end of the spring is wrapped around the screw hole and fixed by the screw.

[0013] Preferably, there are at least two connecting rods, each of which has a mounting hole and is symmetrically arranged on both sides of the top of the fixed bracket. The spring has a connector at one end away from the bottom of the fixed bracket, and the connector engages with the two mounting holes on both sides respectively.

[0014] Preferably, the swing arm further includes a sleeve, the two side walls of the sleeve are fixedly installed with the two side walls of the fixed bracket, and the inner side walls of the sleeve are provided with a plurality of movable positions, and each of the connecting rods moves and cooperates in each of the movable positions.

[0015] Preferably, the swing arm further includes a cover plate, which is mounted on the outer wall of the sleeve.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The screen is mounted on the mounting base. The swing arm swings upward from a horizontal position along the main rotating axis set on the fixed base. As the angle between the swing arm and the base increases, the connecting rod swings simultaneously along the first secondary rotating axis and gradually moves away from the fixed bracket. When the angle between the swing arm and the base is at its midpoint, the distance between the connecting rod and the fixed bracket reaches its maximum value. As the angle between the swing arm and the base continues to increase, the connecting rod gradually approaches the fixed bracket, and when the angle between the swing arm and the base reaches its maximum value, the bottom of the connecting rod is in contact with the top of the fixed bracket. During this process, one end of the connecting rod is rotatably connected to the second secondary rotating axis and applies a thrust to the second secondary rotating axis, thereby driving the rotating disk to rotate. Due to the greater friction between the rotating disk and the friction plate, and the smaller friction between the rotating disk and the side wall of the fixed bracket, the rotating disk rotates downward around the main rotating axis of the rotating base, causing the rotating base to rotate downward around the main rotating axis of the rotating base. Conversely, the swing arm swings upward from a vertical position... When the main rotating shaft on the fixed base swings downwards in the straight position, one end of the connecting rod is rotatably connected to the second auxiliary rotating shaft and applies a pulling force to the second auxiliary rotating shaft, thereby pulling the rotating disk to rotate. This causes the limiting groove to rotate upwards around the main rotating shaft of the rotating base. Due to the large friction between the rotating disk and the friction plate, and the small friction between the rotating disk and the side wall of the fixed bracket, the rotating disk rotates upwards around the main rotating shaft of the rotating base and drives the rotating base to rotate upwards around the main rotating shaft of the rotating base. All of the above adjustment actions can adjust the relative angle between the swing arm and the base while keeping the relative angle between the screen and the base constant. When adjusting the screen, the swing arm can be driven by grasping both sides of the screen and overcoming the damping of the main rotating shaft of the rotating base to rotate the rotating base, thereby adjusting the angle between the swing arm and the base. The screen can always remain vertical during the adjustment process, achieving the effect of independent adjustment of the screen and the swing arm. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the swing arm of this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the spring of this utility model.

[0021] Figure 4 This is a structural schematic diagram of the fixed bracket of this utility model.

[0022] Figure 5 This is a schematic diagram of the internal structure of the mounting cavity of this utility model.

[0023] Figure 6 This is one of the schematic diagrams illustrating the use of this utility model.

[0024] Figure 7 This is the second schematic diagram of the use of this utility model.

[0025] Figure 8 This is the third schematic diagram illustrating the use of this utility model.

[0026] Figure 9 This is the fourth illustration of the use of this utility model.

[0027] Figure 10 This is an exploded view of the rotating seat of this utility model.

[0028] Figure label:

[0029] 1-Fixed seat, 10-Screen, 11-Base, 12-First secondary rotating shaft, 13-Limiting mechanism, 131-Limiting block, 132-Moving groove, 2-Rotating seat, 20-Mounting seat, 21-Rotating disk, 210-Friction pad, 211-Connecting plate, 22-Second secondary rotating shaft, 23-Limiting groove, 231-Moving block, 24-Mounting cavity, 241-Connecting block, 3-Swing arm, 31-Fixed bracket, 311-Moving part, 312-Spring, 313-Screw hole, 314-Screw, 32-Connecting rod, 321-Mounting hole, 33-Connecting piece, 34-Sleeve, 341-Moving position, 35-Cover plate, 4-Main rotating shaft, 41-Torsion spring. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0031] like Figures 1-10As shown, this utility model provides a rotating folding bracket for supporting a screen 10, including a fixed base 1, a rotating base 2, and a swing arm 3. The fixed base 1 has a base 11 at its bottom, and the rotating base 2 has a mounting base 20 on its outer side for mounting the screen 10. A main rotating shaft 4 is rotatably mounted through the axis of the fixed base 1 and the rotating base 2. The swing arm 3 includes a fixed bracket 31 and connecting rods 32 arranged parallel to each other on both sides of the fixed bracket 31. The two main rotating shafts 4 are fixedly mounted to the two side walls of the fixed bracket 31 on their respective sides. The fixed base 1 has a first auxiliary rotating shaft 12. Circular rotating disks 21 are rotatably connected between the two sides of the rotating base 2 and the fixed bracket 31. Friction plates 210 are provided on both sides of the rotating disks 21 for frictional engagement with the two rotating disks 21. A second auxiliary rotating shaft 22 is provided on the rotating disks 21. One end of the connecting rod 32 is rotatably connected to the first auxiliary rotating shaft 12, and the other end is rotatably connected to the second auxiliary rotating shaft 22. In some embodiments, the main rotating shaft 4 includes a sleeve and a bolt. The sleeve is fitted onto the bolt with a nut. The outer wall of the sleeve is smooth and rotates in friction with the rotating seat 2. The friction generated by the rotational friction with the rotating seat 2 is less than the rotational friction between one side of the rotating disk 21 and the side wall of the fixed bracket 31, and the rotational friction between the other side of the rotating disk 21 and the friction plate 210. The nut at one end of the bolt clamps one side wall of the fixed bracket 31 between the rotating disk 21 and the bolt. The bolt shank first passes through one side wall of the fixed bracket 31, and then rotates through a rotating disk 21 and a friction plate 21 in sequence. 0. The rotating seat 2, another friction plate 210, and another rotating disk 21 extend outward through the other side wall of the fixed frame 31 and are threadedly connected to the nut. At this time, the nut and the other rotating disk 21 clamp the other side wall of the fixed frame 31, thereby generating friction between the side wall of the fixed frame 31 and the rotating disk 21. Meanwhile, the threaded part of the bolt can be flat, and the two side walls of the fixed bracket 31 are provided with corresponding through holes, which can prevent the two side walls of the fixed bracket 31 from rotating with the threaded part of the bolt during the rotation process.

[0032] The rotational friction between one side of the rotating disk 21 and the side wall of the fixed bracket 31 is less than the rotational friction between the other side of the rotating disk 21 and the friction plate 210, so that the rotating seat 2 and the mounting seat 20 can be independently adjusted in the angle adjustment process of the swing arm 3.

[0033] Furthermore, the rotating disk 21 is provided with an arc-shaped limiting groove 23, and the rotating seat 2 extends a movable block 231 into the limiting groove 23, the movable block 231 slidingly engaging within the limiting groove 23. A mounting cavity 24 is coaxially arranged within the rotating seat 2, and a connecting block 241 is provided on the inner wall of the mounting cavity 24. A connecting plate 211 extends from the rotating disk 21 into the mounting cavity 24. A torsion spring 41 is fitted onto the portion of the main rotating shaft 4 located within the mounting cavity 24, one end of the torsion spring 41 abutting against the connecting block 241, and the other end abutting against the connecting plate 211. Specifically, by moving the screen 10 fixed by the mounting base 20, the rotating base 2 drives the screen 10 to swing up and down along the main axis 4 of the rotating base 2, while the movable block 231 moves within the limiting groove 23, thus limiting the swing angle of the screen 10. When the rotating base 2 rotates and the screen 10 swings downward along the main axis 4 of the rotating base 2, the connecting plate 211 of the rotating disk 21 swings downward along the main axis 4 of the rotating base 2 and gradually approaches the connecting block 241. During this process, the connecting block 241 and the connecting plate 211 compress the two ends of the torsion spring 41. When the rotating base 2 rotates and the screen 10 swings upward along the main axis 4 of the rotating base 2, the connecting plate 211 of the rotating disk 21 swings upward along the main axis 4 of the rotating base 2 and gradually moves away from the connecting block 241. During this process, the connecting plate 211 and the connecting block 241 relax the compression on the torsion spring 41, thus achieving the elastic support effect of the torsion spring 41 on the screen 10.

[0034] Furthermore, limiting mechanisms 13 are provided on both sides of the fixed base 1 to limit the swing angle of the swing arm 3. The limiting mechanism 13 includes two limiting blocks 131, and a movable groove 132 is formed between the two limiting blocks 131. A movable part 311 extends from the side wall of the fixed bracket 31 into the movable groove 132. The movable part 311 swings within the movable groove 132 and thus limits the swing angle of the swing arm 3. Specifically, the end of the side wall of the fixed bracket 31 connected to the main rotating shaft 4 of the fixed base 1 extends into the movable groove 132 to form a movable part 311. As the swing arm 3 rotates along the main rotating shaft 4 of the fixed base 1, the angle between the swing arm 3 and the base 11 gradually increases. During this process, the movable part 311 swings downward along the main rotating shaft 4 of the fixed base 1 and finally abuts against the bottommost limiting block 131 in the movable groove 132. When the swing arm 3 rotates and the angle between it and the base 11 gradually decreases, the movable part 311 swings downward along the main rotating shaft 4 of the fixed base 1 and finally abuts against the topmost limiting block 131 in the movable groove 132, thereby limiting the swing arm 3's movement along the fixed base 132. The swing angle of the main rotating shaft 4 of the base 1 ensures that the center of gravity of the screen 10 remains within the range of the base 11, maintaining stability. It is worth noting that when the swing arm 3 swings up and down along the main rotating shaft 4 set on the fixed base 1 from the horizontal position, the connecting rod 32 swings along the first secondary rotating shaft 12 at the same time. During this process, one end of the connecting rod 32 is rotatably connected to the second secondary rotating shaft 22 and applies a driving force to the second secondary rotating shaft 22, thereby pushing the rotating disk 21 to rotate, and thus the limiting groove 23 rotates along the main rotating shaft 4 of the rotating base 2, limiting the swing range of the screen 10, so that the swing range of the screen 10 is always kept within the range of 0°~90°, avoiding damage to the screen 10.

[0035] Furthermore, such as Figures 3-4As shown, a spring 312 is provided inside the fixed bracket 31. One end of the spring 312 is connected to the bottom of the fixed bracket 31, and the other end of the spring 312 extends obliquely and is connected to the connecting rod 32. A screw hole 313 is provided at the bottom of the fixed bracket 31, and a screw 314 is threadedly connected thereto. The coil at one end of the spring 312 surrounds the screw hole 313 and is fixed by the screw 314. There are at least two connecting rods 32, each of which is provided with a mounting hole 321 and is symmetrically arranged on both sides of the top of the fixed bracket 31. A connector 33 is provided at the end of the spring 312 away from the bottom of the fixed bracket 31, and the two sides of the connector 33 are respectively engaged with the two mounting holes 321. Specifically, the screw hole 313 is located at the bottom of the fixed bracket 31 near the rotating seat 2, and the mounting hole 321 is located on the side of the connecting rod 32 near the fixed seat 1. When the swing arm 3 swings along the main rotating shaft 4 of the fixed seat 1, and when the swing arm 3 swings and reduces the angle between itself and the base 11, one end of the connecting rod 32 located on both sides of the top of the fixed bracket 31 rotates along the first secondary rotating shaft 12, and the other end rotates along the second secondary rotating shaft 22. At this time, the connecting rod 32 pulls the rotating disk 21 towards the fixed seat 1, and at the same time, the relative position between the connecting rod 32 and the fixed bracket 31 changes, and the spring 312 is stretched. When the swing arm 3 swings and expands the angle between itself and the base 11, one end of the connecting rod 32 located on both sides of the top of the fixed bracket 31 rotates along the first secondary rotating shaft 12, and the other end rotates along the second secondary rotating shaft 22. At this time, the connecting rod 32 pulls the rotating disk 21 towards the rotating seat 2, and at the same time, the relative position between the connecting rod 32 and the fixed bracket 31 changes, and the spring 312 contracts. The spring 312 is used to elastically support the swing arm 3.

[0036] Furthermore, such as Figure 2As shown, the swing arm 3 also includes a sleeve 34, the two side walls of which are fixedly installed with the two side walls of the fixed bracket 31. The inner side walls of the sleeve 34 are provided with several movable positions 341, and each connecting rod 32 is movably engaged within each movable position 341. The swing arm 3 also includes a cover plate 35, which is installed on the outer wall of the sleeve 34. Specifically, the sleeve 34 covers the surface of the fixed bracket 31 and completely covers the opening of the fixed bracket 31, thus protecting the spring 312 structure installed inside the fixed bracket 31. Simultaneously, the sleeve 34 has movable positions 341 on its two inner side walls to provide sufficient space for the connecting rods 32 to move. It is worth noting that the extension direction of the movable positions 341 is the same as the extension direction of the connecting rods 32, and the movable positions 341 open towards the fixed seat 1 and the rotating seat 2. The middle portion of the connecting rod 32 is accommodated within the movable positions 341, and the movable positions 341 also expand away from the fixed bracket 31. As the swing arm 3 swings along the main rotating shaft 4 of the fixed base 1, during the swinging process from the maximum angle to the minimum angle or from the minimum angle to the maximum angle, when the swing arm 3 swings to the middle angle, the distance between the connecting rod 32 and the fixed bracket 31 reaches its maximum value. At this time, the connecting rod 32 is located away from the fixed bracket 31 within the movable position 341 to avoid interference. In addition, connecting rods 32 are also provided on both sides of the bottom of the fixed bracket 31, and two secondary rotating shafts 22 are provided on the rotating disk 21. The two secondary rotating shafts 22 are located on both sides of the main rotating shaft 4, and the distance between the two secondary rotating shafts 22 and the main rotating shaft 4 is... Four first auxiliary rotating shafts 12 are arranged in a straight line on both sides of the fixed base 1, with two first auxiliary rotating shafts 12 on each side. The two first auxiliary rotating shafts 12 are arranged on both sides of the main rotating shaft 4, and are arranged in a straight line with the main rotating shaft 4. One end of the fixed bracket 31 located on both sides of the bottom of the fixed bracket 31 is rotatably connected to the first auxiliary rotating shaft 12, and the other end is rotatably connected to the second auxiliary rotating shaft 22. The sleeve 34 is provided with movable grooves 132 at the bottom of the two inner side walls. When the swing arm 3 swings and the angle between it and the base 11 increases, one end of the connecting rod 32 located at the bottom of the fixed bracket 31 rotates along the first auxiliary rotating shaft 12. The other end rotates along the second auxiliary shaft 22, pulling the rotating disk 21 to rotate. This cooperates with the connecting rod 32 at the top of the fixed bracket 31, which pushes the rotating disk 21 to rotate. When the swing arm 3 swings and the angle between it and the base 11 decreases, the connecting rod 32 at the bottom of the fixed bracket 31 pushes the rotating disk 21 to rotate. This cooperates with the connecting rod 32 at the top of the fixed bracket 31, which pulls the rotating disk 21 to rotate, thus achieving a smoother rotation effect for the rotating disk 21. The cover plate 35 is used to accommodate the various components on both sides of the swing arm 3, preventing external factors from interfering with the movement of the various components and achieving a protective effect.

[0037] The following is a detailed explanation of the working principle of this utility model;

[0038] The screen 10 is mounted on the mounting base 20. The swing arm 3 swings upward from a horizontal position along the main rotating shaft 4 set on the fixed base 1. As the angle between the swing arm 3 and the base 11 increases, the connecting rod 32 swings simultaneously along the first secondary rotating shaft 12 and gradually moves away from the fixed bracket 31. When the angle between the swing arm 3 and the base 11 is 45°, the distance between the connecting rod 32 and the fixed bracket 31 reaches its maximum value. As the angle between the swing arm 3 and the base 11 continues to increase, the connecting rod 32 gradually moves closer to the fixed bracket 31. When the angle between the swing arm 3 and the base 11 is 90°, the bottom of the connecting rod 32 is in contact with the top of the fixed bracket 31. During this process, one end of the connecting rod 32 is rotatably connected to the second auxiliary rotating shaft 22 and applies a thrust to the second auxiliary rotating shaft 22, thereby pushing the rotating disk 21 to rotate. Since the friction between the rotating disk 21 and the friction plate 210 is large, while the friction between the rotating disk 21 and the side wall of the fixed bracket 31 is small, the rotating disk 21 rotates downward around the main rotating shaft 4 of the rotating seat 2. At this time, the rotating disk 21... One side of the rotating disk 21 rubs against the side wall of the fixed frame 31, causing the rotating seat 2 to rotate downwards around the main rotating shaft 4 of the rotating seat 2. Conversely, when the swing arm 3 swings downwards from the vertical position along the main rotating shaft 4 set on the fixed seat 1, one end of the connecting rod 32 is rotatably connected to the second auxiliary rotating shaft 22 and applies a pulling force to the second auxiliary rotating shaft 22, thereby pulling the rotating disk 21 to rotate. This causes the limiting groove 23 to rotate upwards around the main rotating shaft 4 of the rotating seat 2. Furthermore, because the friction between the rotating disk 21 and the friction plate 210 is relatively large, while the friction between the rotating disk 21 and the side wall of the fixed bracket 31 is relatively small, the rotating disk 21 rotates upwards around the main rotating shaft 4 of the rotating seat 2. At this time, the rotating disk 21... The side of the arm 3 rubs against the side wall of the fixed frame 31, causing the rotating seat 2 to rotate upward around the main shaft 4 of the rotating seat 2. All of the above adjustment actions can adjust the relative angle between the swing arm 3 and the base 11 while keeping the relative angle between the screen 10 and the base 11 unchanged. The above technical solution does not limit the size of the base 11. Any size base 11 can be used as long as it can ensure that the relative angle between the screen 10 and the base 11 remains unchanged when adjusting the relative angle between the swing arm 3 and the base 11. The base 11 is used to ensure that other components on the rotating folding bracket do not tip over. Those skilled in the art can easily find the corresponding technology in the prior art, so it will not be described in detail here. It is worth noting that when adjusting the screen 10, the swing arm 3 can be driven by grasping both sides of the screen 10 and overcoming the damping of the main shaft 4 of the rotating seat 21 to rotate the rotating seat 21, thereby adjusting the angle between the swing arm 3 and the base 11, so that the screen 10 can always remain vertical during the adjustment process.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rotating folding stand for supporting a screen (10), characterized in that: The device includes a fixed base (1), a rotating base (2), and a swing arm (3). The fixed base (1) has a base (11) at its bottom. The rotating base (2) has a mounting base (20) on its outer side for mounting the screen (10). A main rotating shaft (4) is rotatably mounted through the axis of the fixed base (1) and the rotating base (2). The swing arm (3) includes a fixed bracket (31) and connecting rods (32) arranged parallel to each other on both sides of the fixed bracket (31). The two sides of the two main rotating shafts (4) are respectively connected to the fixed bracket (31). The two sides of the rotating seat (2) are fixedly installed. The fixed seat (1) is provided with a first auxiliary rotating shaft (12). The two sides of the rotating seat (2) are rotatably connected to the fixed bracket (31). The two sides of the rotating disk (21) are provided with friction plates (210) that rub against the two rotating disks (21) respectively. The rotating disk (21) is provided with a second auxiliary rotating shaft (22). One end of the connecting rod (32) is rotatably connected to the first auxiliary rotating shaft (12), and the other end is rotatably connected to the second auxiliary rotating shaft (22). Among them, the rotational friction between one side of the rotating disk (21) and the side wall of the fixed bracket (31) is less than the rotational friction between the other side of the rotating disk (21) and the friction plate (210), so that the rotating seat (2) and the mounting seat (20) can be independently adjusted in the angle adjustment process of the swing arm (3).

2. The rotating folding stand of claim 1, wherein: The rotating disk (21) is provided with an arc-shaped limiting groove (23), and the rotating seat (2) extends a movable block (231) into the limiting groove (23), and the movable block (231) slides in the limiting groove (23).

3. The rotating folding stand of claim 2, wherein: The rotating seat (2) is coaxially provided with an installation cavity (24), and a connecting block (241) is provided on the inner wall of the installation cavity (24). The rotating disk (21) extends into the installation cavity (24) with a connecting plate (211). The part of the main rotating shaft (4) located in the installation cavity (24) is fitted with a torsion spring (41). One end of the torsion spring (41) is abutted against the connecting block (241), and the other end is abutted against the connecting plate (211).

4. The rotating folding stand of claim 1, wherein: Limiting mechanisms (13) are provided on both sides of the fixed base (1) to limit the swing angle of the swing arm (3).

5. The rotating folding stand of claim 4, wherein: The limiting mechanism (13) includes two limiting blocks (131), and a movable groove (132) is formed between the two limiting blocks (131). The side wall of the fixed bracket (31) extends into the movable groove (132) with a movable part (311). The movable part (311) swings in the movable groove (132) and limits the swing angle of the swing arm (3).

6. The rotating folding stand of claim 1, wherein: A spring (312) is provided inside the fixed bracket (31). One end of the spring (312) is connected to the bottom of the fixed bracket (31), and the other end of the spring (312) extends obliquely and is connected to the connecting rod (32).

7. The rotating folding stand of claim 6, wherein: The fixed bracket (31) has a screw hole (313) at the bottom, and the screw hole (313) is threaded with a screw (314). The coil at one end of the spring (312) surrounds the screw hole (313) and is fixed by the screw (314).

8. The rotating folding stand of claim 7, wherein: The number of connecting rods (32) is at least two, and both connecting rods (32) are provided with mounting holes (321) and are symmetrically arranged on both sides of the top of the fixed bracket (31). The spring (312) has a connector (33) at one end away from the bottom of the fixed bracket (31), and the two sides of the connector (33) are respectively engaged with the two mounting holes (321).

9. The rotating folding bracket according to claim 1, characterized in that: The swing arm (3) also includes a sleeve (34), the two side walls of the sleeve (34) are fixedly installed with the two side walls of the fixed bracket (31), and the inner side walls of the sleeve (34) are provided with a number of movable positions (341), and each of the connecting rods (32) moves and cooperates in each of the movable positions (341).

10. The rotating folding stand of claim 9, wherein: The swing arm (3) also includes a cover plate (35), which is mounted on the outer wall of the sleeve (34).

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