Projector stand

Abstract

A projector stand (100), comprising a base (10), a telescopic rod assembly (20) and a tray assembly (30), wherein the telescopic rod assembly comprises a first sleeve (21), a gas spring (22), a sliding damping assembly (23) and a second sleeve (24); the first sleeve is connected to the base; the gas spring passes through the first sleeve and is connected to the base, and passes through the second sleeve and is connected to the tray assembly; the second sleeve is connected to the sliding damping assembly; and the sliding damping assembly abuts against an inner wall of the first sleeve so as to generate a frictional force, by means of which the relative movement between the base and the tray assembly is limited. The projector stand can assist a projector in hovering at any position within a certain travel range, thereby facilitating the simplification of user operation.

Description

Projector stand Technical Field

[0001] This invention relates to the field of projector accessories, and more particularly to a projector stand. Background Technology

[0002] A projector is a device that projects images or videos onto a screen or wall, and it is usually used in conjunction with other electronic devices. As projector performance has improved, projectors have become more portable. When you want to watch a movie, you simply place the projector in front of or to the side of the screen, usually with the aid of a projector stand.

[0003] However, as the audio-visual experience of projection devices on the market has improved, the speaker and optical engine configurations of projectors have become more advanced, resulting in some projectors weighing close to 10KG or even more. Technical issues

[0004] Users often find it difficult to move or adjust the projection position, especially when using a floor-standing projector stand to adjust the height. The weight of the projector itself presses on the stand, making it difficult for users to fix the position. Technical solutions

[0005] In a first aspect, embodiments of this application provide a projector bracket, which includes a base, a telescopic rod assembly, and a tray assembly connected in sequence;

[0006] The telescopic rod assembly includes a first sleeve, a gas spring, a sliding damping assembly, and a second sleeve. The first sleeve is connected to the base. One end of the gas spring passes through the first sleeve and is connected to the base, while the other end of the gas spring passes through the second sleeve and is connected to the tray assembly. One end of the second sleeve is connected to the sliding damping assembly and extends into the first sleeve, while the other end of the second sleeve is connected to the tray assembly.

[0007] The sliding damping component can generate friction by abutting against the inner wall of the first sleeve, thereby limiting the relative movement between the base and the tray assembly. Beneficial effects

[0008] The projector bracket provided in this application includes a base, a telescopic rod assembly, and a tray assembly connected in sequence. The telescopic rod assembly includes a first sleeve, a gas spring, a sliding damping assembly, and a second sleeve. The sliding damping assembly can generate friction by abutting against the inner wall of the first sleeve to limit the relative movement between the base and the tray assembly. It is understood that, considering the projector, tray assembly, second sleeve, and sliding damping assembly placed on the tray assembly as a whole, the thrust of the gas spring, the frictional force, and gravity achieve a force balance, keeping this whole relatively stationary with respect to the base and the second sleeve, thus allowing the projector to hover at a certain height. When the user pushes the projector up or down, the force balance is disrupted, and the projector can move up or down following the user's push, thereby adjusting the projector's position. When the user removes the push, the whole returns to a force balance state, enabling the projector bracket to assist in hovering the projector at any position within a certain stroke, simplifying user operation. Attached Figure Description

[0009] Figure 1 is a schematic diagram of the first structure of the projector bracket provided in the embodiment of this application.

[0010] Figure 2 is a schematic diagram of the second structure of the projector bracket provided in the embodiment of this application.

[0011] Figure 3 is a schematic diagram of the third structure of the projector bracket provided in the embodiment of this application.

[0012] Figure 4 is a schematic diagram of the explosion in Figure 3.

[0013] Figure 5 is an enlarged schematic diagram of part A in Figure 4.

[0014] Figure 6 is a structural schematic diagram of the base provided in an embodiment of this application.

[0015] Figure 7 is an exploded view of the base provided in an embodiment of this application.

[0016] Figure 8 is an exploded view of the projector bracket provided in an embodiment of this application.

[0017] Figure 9 is a schematic diagram of the fourth structure of the projector bracket provided in the embodiments of this application.

[0018] Figure 10 is a cross-sectional view along BB in Figure 9.

[0019] Implementation methods of this application

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0021] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0022] As projectors on the market offer increasingly better audio-visual experiences, their speaker and optical engine configurations have become more sophisticated. This has resulted in some projectors weighing close to 10 kg or more, making it inconvenient for users to move the projector or adjust its position. When using a projector stand to adjust the height, the projector's weight presses on the stand, making it difficult to keep the projector in a fixed position.

[0023] Existing projector stands are typically tripods, adjustable pole stands with counterweights, or simple wheeled mobile stands. These stands often adjust height using a telescopic pole, then add a locking mechanism to secure the height. If the height is not suitable, the user needs to unlock the locking mechanism, readjust the height, and then re-lock it. These adjustments require supporting the projector while holding it, and as mentioned above, existing projectors are quite heavy, causing inconvenience for users when adjusting the height.

[0024] This application provides a projector stand that can assist the projector in hovering at any position within a certain range, facilitating user operation. The following is a detailed description in conjunction with the accompanying drawings.

[0025] Please refer to Figures 1 and 2. Figure 1 is a schematic diagram of the first structure of the projector bracket provided in the embodiment of this application, and Figure 2 is a schematic diagram of the second structure of the projector bracket provided in the embodiment of this application.

[0026] This application provides a projector stand 100, including a base 10, a telescopic rod assembly 20, and a tray assembly 30 connected in sequence. The projector stand 100 is used to support a projector 200.

[0027] The projector stand 100 can be a floor-standing projector stand or a desktop lift-up projector stand 100. That is, the projector stand 100 can be placed on the ground to adjust the distance between the tray assembly 30 and the ground, or it can be placed on a desktop to adjust the distance between the tray assembly 30 and the desktop.

[0028] The telescopic rod assembly 20 can adjust the distance between the base 10 and the tray assembly 30, making the projector 200 suitable for the object being projected onto. This object can be a screen or a wall. Depending on the usage scenario, the projection of the telescopic rod assembly 20 onto the base 10 can be located at the center or edge of the base 10. For example, when the projection of the telescopic rod assembly 20 onto the base 10 is located at the center, the projector stand 100 is more aesthetically pleasing and can be used when the projector stand 100 is not obstructed by other objects. When the projection of the telescopic rod assembly 20 onto the base 10 is located at the edge of the base 10, the projector 200 can be placed between furniture and a wall, such as behind a sofa, reducing the distance between the sofa and the wall and minimizing the space occupied by the projector stand 100.

[0029] The tray assembly 30 can be connected and fixed to the projector 200. There are two main ways the tray assembly 30 and the projector 200 can be fixed: one is a pan-tilt connection, where the standard interface on the projector 200 is fixed to the standard interface on the tray assembly 30, allowing the tray assembly 30 to rotate the projector 200 360 degrees, enabling projection from various angles; the other is a tray support, where the projector 200 can be placed directly on the tray assembly 30, allowing for convenient storage and organization.

[0030] Specifically, please refer to Figures 3 and 4. Figure 3 is a schematic diagram of the third structure of the projector bracket provided in the embodiment of this application, and Figure 4 is an exploded view of Figure 3. The telescopic rod assembly 20 includes a first sleeve 21, a gas spring 22, a sliding damping assembly 23, and a second sleeve 24.

[0031] The first sleeve 21 is connected to the base 10, and the relative position of the first sleeve 21 and the base 10 is fixed. Both the first sleeve 21 and the second sleeve 24 are hollow structures.

[0032] The gas spring 22 in this application can also be referred to as an air spring. One end of the gas spring 22 passes through the first sleeve 21 and is connected to the base 10, while the other end passes through the second sleeve 24 and is connected to the tray assembly 30. The gas spring 22 mainly consists of a piston rod, a piston, a sealing guide sleeve, filler, a pressure cylinder, and a connector. The pressure cylinder is a sealed cavity filled with inert gas or an oil-gas mixture, and the pressure inside the cavity is several times or tens of times atmospheric pressure. When the gas spring 22 is in action, the movement of the piston rod is achieved by utilizing the pressure difference on both sides of the piston. The gas spring 22 has a maximum length and a minimum length so that the telescopic assembly can support the tray assembly 30 at both maximum and minimum heights.

[0033] In this embodiment, the projector bracket 100 can also use a motor plus lead screw to replace the gas spring 22, thereby having the function of automatic height adjustment.

[0034] The diameter of the second sleeve 24 is smaller than that of the first sleeve 21, or the cross-sectional area of ​​the second sleeve 24 is smaller than that of the first sleeve 21, so that the second sleeve 24 can partially extend into the first sleeve 21. During the extension or retraction of the gas spring 22, the gas spring 22 can drive the first sleeve 21 and the second sleeve 24 to move relative to each other. For the aesthetics of the projector bracket 100, during the extension and retraction phase of the projector bracket 100, at least a portion of the end of the second sleeve 24 connected to the sliding damping assembly 23 can extend into the first sleeve 21. The cross-section of the first sleeve 21 and / or the second sleeve 24 is circular, elliptical, or polygonal. The cross-sectional shapes of the first sleeve 21 and the second sleeve 24 can be the same, for example, both are circular or both are elliptical. By configuring the first sleeve 21 and the second sleeve 24 in this way, the gap between the first sleeve 21 and the second sleeve 24 can be effectively reduced, providing both dust prevention and aesthetic benefits.

[0035] One end of the second sleeve 24 is connected to the sliding damping assembly 23, and the sliding damping assembly 23 extends into the first sleeve 21. The other end of the second sleeve 24 is connected to the tray assembly 30. Specifically, the connection between one end of the second sleeve 24 and the sliding damping assembly 23 is a fastening connection, such as using bolts or screws. Similarly, the connection between the other end of the second sleeve 24 and the tray assembly 30 is also a fastening connection, such as using bolts or screws. The sliding damping assembly 23 can abut against the inner wall of the first sleeve 21 to generate friction, thereby limiting the relative movement between the base 10 and the tray assembly 30. It is understandable that the projector 200 placed on the tray assembly 30, the tray assembly 30, the second sleeve 24, and the sliding damping assembly 23 are considered as a whole. That is, the structure in which the projector bracket 100 and the projector 200 can move relative to the base 10 is considered as a whole. The thrust of the gas spring 22, the frictional force, and the gravity achieve a force balance, so that this whole remains relatively stationary with respect to the base 10, allowing the projector 200 to hover at a certain height. When the user pushes the projector 200 upward or downward with a small force, the force balance is disrupted, and the projector 200 can move upward or downward with the user's push, thereby adjusting the position of the projector 200. When the user removes the push, the whole returns to the force balance state to remain stationary. At this time, the projector is adjusted to a new height position. The above steps eliminate the need for the mechanical locking or unlocking actions required for other projector brackets 100.

[0036] In some embodiments, please continue to refer to Figures 4 and 5. Figure 5 is an enlarged schematic diagram of part A in Figure 4. The sliding damping assembly 23 includes a fixed base 231 and a damping block 232. The fixed base 231 has a hollow structure, and the gas spring 22 passes through the hollow structure. It can be understood that, due to the hollow structure of the fixed base 231, it is also beneficial to reduce the weight of the fixed base 231 and improve the flexibility of the telescopic adjustment of the projector bracket 100.

[0037] The damping block 232 is connected to the fixed base 231 and is disposed between the fixed base 231 and the inner wall of the first sleeve 21, abutting against the inner wall of the first sleeve 21. When there are multiple damping blocks 232, they can be disposed around the periphery of the fixed base 231 to generate frictional force evenly at multiple points. The damping block 232 can be made of plastic or rubber.

[0038] The sliding damping assembly 23 includes a pulley 233 connected to the fixed base 231; a slide rail 211 is provided on the inner side of the first sleeve 21, and the slide rail 211 is slidably connected to the pulley 233. The pulley 233 is spaced apart from the damping block 232. When the user applies force to the tray assembly 30 or the second sleeve 24, the pulley 233 slides relative to the slide rail 211, playing a rolling guiding role in adjusting the relative position of the first sleeve 21 and the second sleeve 24, reducing friction, making the adjustment process smoother, and providing a better user experience. The pulley 233 can be made of metal. The pulley 233 facilitates the rapid movement of the projector bracket 100.

[0039] In some embodiments, referring to Figures 1, 2, and 4, the projector bracket 100 further includes a sleeve locking assembly 40. The sleeve locking assembly 40 is disposed at the end of the first sleeve 21 away from the base 10, and is used to cover the gap between the first sleeve 21 and the second sleeve 24. It is understood that because the second sleeve 24 is smaller than the cross-sectional area of ​​the first sleeve 21, and the second sleeve 24 extends into the first sleeve 21, a gap exists between the second sleeve 24 and the first sleeve 21, leading to dust ingress or an unsightly appearance. By providing the sleeve locking assembly 40 at the end of the first sleeve 21 away from the base 10, the gap between the first sleeve 21 and the second sleeve 24 can be covered, preventing dust ingress and improving the overall aesthetics.

[0040] Referring to Figure 4, the sleeve lock includes a first sleeve lock 41 and a second sleeve lock 42. The first sleeve lock 41 is located at the end of the first sleeve 21 away from the base 10 and is engaged with the inner side of the first sleeve 21. The second sleeve lock 42 is located at the end of the first sleeve lock 41 away from the first sleeve 21 and is engaged with the outer side of the first sleeve lock 41.

[0041] The first sleeve buckle 41 can act as a bridge, engaging with the inner side of the first sleeve 21 on one hand and with the inner side of the second sleeve buckle 42 on the other, so as to fix the second sleeve buckle 42 on the first sleeve 21. This allows the second sleeve 24 to cover the gap between the first sleeve 21 and the second sleeve 24, preventing dust from entering through the gap and also contributing to the overall aesthetics.

[0042] In some embodiments, please continue to refer to Figures 2 and 4. The pallet assembly 30 includes a crossbar 31 and a pallet body 32. The crossbar 31 is connected to the second sleeve 24. The length direction of the crossbar 31 intersects the extension direction of the second sleeve 24. The other end of the second sleeve 24 is connected to the crossbar 31.

[0043] Due to the significant weight of the projector 200, to enhance the reliability of the connection between the projector bracket 100 and the projector 200, the tray assembly 30 includes a crossbar 31 and a tray body 32. The crossbar 31 and the second sleeve 24 can be vertically aligned to increase the connection area with the tray body 32, facilitating a more secure fixation. Understandably, in this configuration, the second sleeve 24 can be perpendicular to the horizontal plane (bearing surface), and correspondingly, the crossbar 31 can be parallel to the horizontal plane. The tray assembly 30 also includes a third sleeve 33, which is fitted over the crossbar 31 and connected to the tray body 32. The connection between the third sleeve 33 and the tray body 32 is a fastening connection, such as using bolts or screws. The connection between the third sleeve 33 and the crossbar 31 is also a fastening connection, such as using bolts or screws. The third sleeve 33 has a hollow structure. The third sleeve 33 can be designed as a handle for easier gripping by the user. The third sleeve 33 can enhance the aesthetics of the projector bracket 100. It is understandable that the first sleeve 21, the second sleeve 24, and the third sleeve 33 can be made of the same material and have the same appearance, which helps to improve the overall harmony.

[0044] In addition, the cross-sectional area of ​​the third sleeve 33 is larger than that of the cross-sectional area of ​​the crossbar 31, which helps to improve the tightness of the connection with the tray body 32, thereby enabling it to support the heavier projector 200 and improve the overall reliability.

[0045] Please refer to Figures 6 and 7. Figure 6 is a structural schematic diagram of the base provided in an embodiment of this application, and Figure 7 is an exploded schematic diagram of the base provided in an embodiment of this application. The base 10 includes a housing 11 and a first connecting member 12. The housing 11 includes a first sub-housing 111 and a second sub-housing 112. The first sub-housing 111 and the second sub-housing 112 are arranged opposite to each other and connected. The first sub-housing 111 is provided with a first opening. The first connecting member 12 is disposed inside the housing 11 and corresponds to the first opening. A first sleeve 21 passes through the first opening and is connected to the first connecting member 12. After the first sub-housing 111 and the second sub-housing 112 are assembled, they form a housing 11 with a receiving space. The housing 11 protects the other structures of the base 10 and is also aesthetically pleasing. The base 10 can be circular, polygonal, or irregular in shape. It can also be flat or cylindrical. The base 10 provided in this embodiment is disc-shaped.

[0046] The base 10 also includes a counterweight 13, which is disposed inside the housing 11 and connected to the first connector 12. The counterweight 13 and the first connector 12 can be fixed together by in-mold injection molding or by fasteners such as bolts or screws. The counterweight 13 increases the weight of the base 10, improving the stability of the projector bracket 100. The counterweight 13 can be manufactured using a shot molding method.

[0047] The base 10 also includes a second connector 14 and a wheel set 15. A second opening is provided on the second sub-housing 112. The second connector 14 is disposed inside the housing 11 and corresponds to the second opening. The wheel set 15 passes through the second opening and is connected to the second connector 14.

[0048] The counterweight 13, the first connector 12, and the second connector 14 can be separately manufactured, meaning the three structural components are prepared separately and then assembled. The advantage is that the counterweight 13 can be manufactured using a low-cost process, such as iron sand molding. Alternatively, the counterweight 13, the first connector 12, and the second connector 14 can be integrally molded, eliminating the need for subsequent assembly processes. In this case, the counterweight 13 can be manufactured by processing a cast iron block using a CNC machine tool.

[0049] The base 10 also includes a circuit board 16 and a battery 17. The circuit board 16 is disposed inside the housing 11 and is connected to the second sub-housing 112. The battery 17 is electrically connected to the circuit board 16. The battery 17 can power the projector 200. The components on the circuit board 16 can regulate the voltage supplied by the battery 17 to the projector 200 to provide a stable voltage, and can also protect the battery 17 when an external power source supplies power to it.

[0050] The second sub-casing 112 has a groove 1121, the opening of which is oriented away from the first sub-casing 111. The groove 1121 is used to accommodate the battery 17. In other words, the groove 1121 is provided on the surface of the casing 11 to facilitate subsequent maintenance and replacement of the battery 17.

[0051] The housing 11 also includes a battery cover 113, which is connected to the second sub-housing 112. The battery cover 113 covers the groove 1121 to fix the position of the battery 17 and prevent the battery 17 from slipping out of the groove 1121. If the battery 17 is replaceable, the battery cover 113 can be provided separately; if the battery 17 is not replaceable, the battery cover 113 can be integrally formed with the second sub-housing 112.

[0052] Please refer to Figure 8, which is an exploded view of the projector bracket provided in this embodiment. The projector bracket 100 also includes a fastener 80, which passes through the base 10 and is connected to the telescopic rod assembly 20. The housing 11 also includes a cover 114, which is connected to the second sub-housing 112 and is used to cover the fastener 80. The fastener 80 can be a quick-release screw. Through the cooperation of the fastener 80 and the cover 114, the base 10 and the telescopic assembly can be quickly disassembled and assembled. For example, during installation, the base 10 and the telescopic rod assembly 20 are connected by a quick-release screw. After the screw is installed, the cover 114 is inserted into the base 10, that is, the cover 114 is connected to the second sub-housing 112. The base 10 and telescopic rod assembly 20 can be disassembled and assembled using fasteners 80, enabling quick disassembly and assembly of the projector bracket 100. This facilitates storage when the projector bracket 100 is not in use or reduces its size during transportation to save costs.

[0053] In some embodiments, please refer to Figures 4, 9, and 10. Figure 9 is a schematic diagram of a fourth structure of the projector bracket provided in this application embodiment, and Figure 10 is a cross-sectional view along BB in Figure 9. The projector bracket 100 also includes a power cord 50, which passes through the first sleeve 21 and the second sleeve 24. The power cord 50 can supply power to the projector 200. One end of the power cord 50 can be a DC connector that matches the projector 200, and the other end can be a Type-C connector.

[0054] In the above embodiments, the power cord 50 can pass through not only the first sleeve 21 and the second sleeve 24, but also the fixing seat 231, the crossbar 31, and / or the base 10 of the sliding damping assembly 23. The power cord 50 can be electrically connected to an external power source or to the battery 17 built into the base 10. The power cord 50 is routed through the projector bracket 100 without being exposed and does not compromise the integrity of the projector bracket 100.

[0055] The power cord 50 includes a first segment 51 and a second segment 52. The first segment 51 is curved and is disposed within the first sleeve 21, surrounding the gas spring 22. The second segment 52 is straight. The first segment 51 is used for the retraction and expansion / contraction of the power cord 50 during the extension and compression of the telescopic rod assembly 20. When the gas spring 22 extends, the first segment 51 of the power cord 50 changes from a curved state to a slightly straighter state, and then extends along with the gas spring 22.

[0056] The power cord 50 includes a cord body 53 and multiple limiting members 54, which are disposed on the cord body 53. These limiting members 54 can be engaged with other structures within the projector bracket 100, such as engaging with the first sleeve 21 or the base 10, or engaging with the crossbar 31. By using these multiple limiting members 54, the relative position of the cord body 53 within the projector bracket 100 can be fixed, preventing displacement of the cord body 53 during the extension and retraction of the telescopic assembly.

[0057] Please refer to Figures 4, 7, and 10. The projector bracket 100 also includes a sleeve plug 60. The sleeve plug 60 is connected to the end of the first sleeve 21 away from the second sleeve 24. The sleeve plug 60 is also connected to the power cord 50, the gas spring 22, and the base 10. The sleeve plug 60 can fix the first sleeve 21 to the base 10 and also fix the length of the power cord 50 reserved in the telescopic assembly. One end of the gas spring 22 is fixed to the sleeve plug 60, and the sleeve plug 60 is fixed to the base 10 to fix the relative position of the gas spring 22 and the base 10.

[0058] Please refer to Figures 4 and 10. The projector bracket 100 also includes an extension rod 70, which passes through the second sleeve 24. One end of the extension rod 70 is connected to the gas spring 22, and the other end is connected to the tray assembly 30. If the initial length and stroke of the gas spring 22 are less than the design stroke of the projector bracket, the extension rod 70 can be used to extend the effective length of the gas spring 22, thereby increasing the extension height of the projector bracket 100.

[0059] The projector bracket 100 provided in this embodiment includes a base 10, a telescopic rod assembly 20, and a tray assembly 30 connected in sequence. The telescopic rod assembly 20 includes a first sleeve 21, a gas spring 22, a sliding damping assembly 23, and a second sleeve 24. The sliding damping assembly 23 can abut against the inner wall of the first sleeve 21 to generate friction, thereby limiting the relative movement between the base 10 and the tray assembly 30. It can be understood that, considering the projector 200 placed on the tray assembly 30, the tray assembly 30, the second sleeve 24, and the sliding damping assembly 23 as a whole, the thrust of the gas spring 22, the friction, and gravity are balanced, so that this whole remains relatively stationary with respect to the base 10 and the second sleeve 24, that is, the projector 200 can be suspended at a certain height. When the user pushes the projector 200 up or down, the force balance is disrupted, and the projector 200 can move up or down following the user's pushing force, thereby adjusting the position of the projector 200. When the user removes the thrust, the entire system returns to a state of force equilibrium, allowing the projector bracket 100 to assist the projector 200 in hovering at any position within a certain stroke, simplifying user operation.

[0060] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0061] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0062] The projector bracket provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A projector support, comprising a base, a telescopic rod assembly and a tray assembly connected in sequence; The telescopic rod assembly comprises a first sleeve, a gas spring, a sliding damping assembly and a second sleeve, the first sleeve is connected with the base; one end of the gas spring is arranged in the first sleeve and connected with the base, the other end of the gas spring is arranged in the second sleeve and connected with the tray assembly; one end of the second sleeve is connected with the sliding damping assembly and the sliding damping assembly extends into the first sleeve, the other end of the second sleeve is connected with the tray assembly; wherein, the sliding damping assembly is capable of abutting against the inner wall of the first sleeve to generate a friction force, so as to limit the relative movement between the base and the tray assembly.

2. The projector support according to claim 1, wherein the sliding damping assembly comprises a fixing seat and a damping block, the fixing seat is a hollow structure, the gas spring is arranged in the fixing seat, the damping block is connected with the fixing seat, the damping block is arranged between the fixing seat and the inner wall of the first sleeve, and the damping block abuts against the inner wall of the first sleeve.

3. The projector support according to claim 2, wherein the sliding damping assembly further comprises a pulley, the pulley is connected with the fixing seat, and the inner side of the first sleeve is provided with a sliding rail which is in sliding connection with the pulley.

4. The projector support according to claim 1, further comprising a sleeve lock assembly, the sleeve lock assembly is arranged at the end of the first sleeve away from the base, and the sleeve lock assembly is used for shielding the gap between the first sleeve and the second sleeve.

5. The projector support according to claim 4, wherein the sleeve lock assembly comprises a first sleeve lock and a second sleeve lock, the first sleeve lock is arranged at the end of the first sleeve away from the base, the first sleeve lock is clamped with the inner side of the first sleeve, and the second sleeve lock is arranged at the end of the first sleeve lock away from the first sleeve, and the second sleeve lock is clamped with the outer side of the first sleeve lock.

6. The projector support according to claim 1, wherein the tray assembly comprises a cross rod and a tray body, the cross rod is connected with the second sleeve, the length direction of the cross rod intersects with the extension direction of the second sleeve, and the other end of the second sleeve is connected with the cross rod.

7. The projector support according to claim 6, wherein the tray assembly further comprises a third sleeve, the third sleeve is sleeved outside the cross rod, and the third sleeve is connected with the tray body.

8. The projector support according to claim 1, wherein the base comprises a shell and a first connecting piece, the shell comprises a first sub-shell and a second sub-shell, the first sub-shell and the second sub-shell are oppositely arranged and connected, the first sub-shell is provided with a first opening, the first connecting piece is arranged in the shell and corresponds to the first opening, the first sleeve is arranged in the first opening and connected with the first connecting piece.

9. The projector support according to claim 8, wherein the base further comprises a counterweight, the counterweight is arranged in the shell and connected with the first connecting piece.

10. The projector support according to claim 8, wherein the base further comprises a second connecting piece and a wheel set, the second sub-shell is provided with a second opening, the second connecting piece is arranged in the shell and corresponds to the second opening, and the wheel set is arranged in the second opening and connected with the second connecting piece.

11. The projector stand of claim 8, wherein the base further comprises a circuit board and a battery, the circuit board is disposed inside the housing, the circuit board is connected with the second sub-housing, and the battery is electrically connected with the circuit board.

12. The projector stand of claim 11, wherein the second sub-housing is provided with a recess, an opening of the recess is disposed in a direction away from the first sub-housing, and the recess is used for accommodating the battery.

13. The projector stand of claim 12, wherein the housing further comprises a battery cover, the battery cover is connected with the second sub-housing, and the battery cover is used for covering the recess.

14. The projector stand of claim 8, further comprising a fastener, the fastener is disposed through the base and connected with the telescopic rod assembly, and the housing further comprises a cover, the cover is connected with the second sub-housing, and the cover is used for covering the fastener.

15. The projector stand of claim 1, further comprising a power cord, the power cord is disposed through the first sleeve and the second sleeve.

16. The projector stand of claim 15, wherein the power cord comprises a first segment and a second segment, the first segment is curved, the first segment is disposed in the first sleeve, the first segment is disposed around the gas spring, and the second segment is straight.

17. The projector stand of claim 15, wherein the power cord comprises a wire body and a limiting member, and the limiting member is disposed on the wire body.

18. The projector stand of claim 15, further comprising a sleeve plug, the sleeve plug is connected with an end of the first sleeve away from the second sleeve, and the sleeve plug is connected with the power cord, the gas spring, and the base.

19. The projector stand of claim 1, further comprising an extension rod, one end of the extension rod is connected with the gas spring, and the other end of the extension rod is connected with the tray assembly.

20. The projector stand of claim 1, wherein a cross section of the first sleeve and / or the second sleeve is circular, elliptical, or polygonal.

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