Projector support

Abstract

A projector support comprises a base, a telescopic rod assembly and a tray assembly. The telescopic rod assembly comprises a first sleeve, a gas spring, a sliding damping assembly and a second sleeve, and the first sleeve is connected with the base; the air spring penetrates through the first sleeve and is connected with the base, and the air spring penetrates through the second sleeve and is connected with the tray assembly. The second sleeve is connected with the sliding damping assembly. The sliding damping assembly abuts against the inner wall of the first sleeve to generate friction force, and relative movement of the base and the tray assembly is limited.

Description

Technical Field

[0001] The invention relates to the field of projector accessories, and in particular to a projector bracket. Background Art

[0002] A projector is a device that can project images or videos onto a screen or wall. It usually needs to be used together with other electronic devices. As the performance of projectors improves, projectors tend to be portable. When you need to watch a movie, you only need to place the projector in front of or to the side of the screen. Usually, a projector stand is needed for auxiliary installation.

[0003] However, as the audio-visual experience of projection equipment on the market becomes better and better, the speaker and optical machine-related configurations of projectors are getting higher and higher, resulting in some projectors weighing nearly 10KG or more.

[0004] Technical issues

[0005] It is difficult for users to move the entire device when moving or adjusting the projection position, especially when using a floor-standing projector stand to adjust the height, the entire weight of the projector is pressed on the stand and it is not convenient for users to fix the position.

[0006] Technical Solutions

[0007] In a first aspect, an embodiment of the present application provides a projector stand, which includes a base, a telescopic rod assembly, and a tray assembly connected in sequence;

[0008] The telescopic rod assembly includes a first sleeve, a gas spring, a sliding damping assembly and a second sleeve, wherein the first sleeve is connected to the base; one end of the gas spring is inserted through the first sleeve and connected to the base, and the other end of the gas spring is inserted through the second sleeve and connected to the tray assembly; one end of the second sleeve is connected to the sliding damping assembly and extends into the first sleeve, and the other end of the second sleeve is connected to the tray assembly;

[0009] The sliding damping assembly can abut against the inner wall of the first sleeve to generate friction force, so as to limit the relative movement between the base and the tray assembly.

[0010] Beneficial Effects

[0011] In the projector bracket provided in the embodiment of the present application, the projector bracket includes a base, a telescopic rod assembly and a tray assembly connected in sequence, and the telescopic rod assembly includes a first sleeve, a gas spring, a sliding damping assembly and a second sleeve. The sliding damping assembly can abut against the inner wall of the first sleeve to generate friction to limit the relative movement of the base and the tray assembly. It can be understood that the thrust, friction and gravity of the gas spring placed on the tray assembly are balanced so that the whole and the base and the second sleeve remain relatively static, that is, the projector can be suspended at a certain height. When the user pushes the projector up or down, the force balance state is destroyed, and the projector can move up or down following the user's thrust, thereby adjusting the position of the projector. When the user removes the thrust, the above-mentioned whole returns to the force balance state, so that the projector bracket can assist the projector to hover at any position within a certain stroke, which is convenient for simplifying user operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the first structure of the projector bracket provided in an embodiment of the present application.

[0013] Figure 2 A second structural schematic diagram of the projector bracket provided in an embodiment of the present application.

[0014] Figure 3 A third structural schematic diagram of the projector bracket provided in an embodiment of the present application.

[0015] Figure 4 for Figure 3 Schematic diagram of the explosion.

[0016] Figure 5 for Figure 4 An enlarged schematic diagram of local A.

[0017] Figure 6 A schematic diagram of the structure of the base provided in an embodiment of the present application.

[0018] Figure 7 An exploded schematic diagram of the base provided in an embodiment of the present application.

[0019] Figure 8 An exploded schematic diagram of the projector bracket provided in an embodiment of the present application.

[0020] Fig. 9 A fourth structural schematic diagram of the projector bracket provided in an embodiment of the present application.

[0021] Fig.10 for Fig. 9 Section along BB.

[0022] Implementation Methods of the Application

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0024] As the audio-visual experience of projectors on the market is getting better and better, the speaker and optical machine configuration of projectors are getting higher and higher, resulting in the weight of some projectors approaching 10KG or heavier, which makes it inconvenient for users to move the entire projector when moving the projector or adjusting the projection position. When the projector uses a projector stand to adjust the height, the weight of the projector is pressed on the projector stand, making it inconvenient to fix the position.

[0025] The projector stand in the prior art is usually a tripod, a rod-shaped adjustable stand with a counterweight, or a simple wheeled mobile stand. The height of these projector stands is often adjusted by a telescopic rod, and then a lock is added to fix the height. If the height is not suitable, the user needs to unlock the lock, readjust the height, and then buckle it. These operations require the projector to be held for adjustment. As mentioned above, the existing projector is heavy, which brings inconvenience to the user during the height adjustment process.

[0026] An embodiment of the present application provides a projector bracket, which can assist the projector to hover at any position within a certain travel range, so as to facilitate user operation, and is described in detail below with reference to the accompanying drawings.

[0027] See also Figure 1 as well as Figure 2 , Figure 1 A schematic diagram of the first structure of the projector bracket provided in the embodiment of the present application, Figure 2 A second structural schematic diagram of the projector bracket provided in an embodiment of the present application.

[0028] The present application provides a projector bracket 100 , which includes a base 10 , a telescopic rod assembly 20 , and a tray assembly 30 connected in sequence. The projector bracket 100 is used to support a projector 200 .

[0029] The projector bracket 100 can be a floor-standing projection bracket or a desktop lifting projector bracket 100, that is, the projector bracket 100 can be placed on the ground to adjust the distance between the tray assembly 30 and the ground, or placed on the desktop to adjust the distance between the tray assembly 30 and the desktop.

[0030] The telescopic rod assembly 20 can adjust the distance between the base 10 and the tray assembly 30 so that the projector 200 is suitable for the object to be projected. The object to be projected can be a curtain or a wall. Depending on the usage scenario, the projection of the telescopic rod assembly 20 on 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 on the base 10 is located at the center of the base 10, the projector bracket 100 is more beautiful as a whole and can be applied to the situation where the projector bracket 100 is not blocked by other objects. When the projection of the telescopic rod assembly 20 on the base 10 is located at the edge of the base 10, the projector 200 can be placed between the furniture and the wall, such as behind the sofa, to reduce the distance between the sofa and the wall, and reduce the space occupied by the projector bracket 100.

[0031] The tray assembly 30 can be connected and fixed with the projector 200. There are two main ways to fix the tray assembly 30 and the projector 200: one is the pan-tilt connection type, in which the standard interface on the projector 200 is fixed with the standard interface on the tray assembly 30, and the tray assembly 30 can drive the projector 200 to rotate 360 ​​degrees, so that the projector 200 can be projected at various angles; the other is the tray support type, in which the projector 200 can be directly placed on the tray assembly 30, and can be placed whenever needed, which is convenient for storage and organization.

[0032] For details, see Figure 3 as well as Figure 4 , Figure 3 This is a third structural schematic diagram of the projector bracket provided in the embodiment of the present application, Figure 4 for 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.

[0033] The first sleeve 21 is connected to the base 10, and the relative positions of the first sleeve 21 and the base 10 are fixed. Both the first sleeve 21 and the second sleeve 24 are hollow structures.

[0034] The gas spring 22 in the present application may also be referred to as an air spring. One end of the gas spring 22 is inserted through the first sleeve 21 and connected to the base 10, and the other end of the gas spring 22 is inserted through the second sleeve 24 and connected to the tray assembly 30. The gas spring 22 is mainly composed of a piston rod, a piston, a sealing guide sleeve, a filler, a pressure cylinder and a joint, wherein the pressure cylinder is a closed cavity filled with an inert gas or an oil-gas mixture, and the pressure in the cavity is several times or dozens of times the atmospheric pressure. When the gas spring 22 acts, the pressure difference on both sides of the piston is used to realize the movement of the piston rod. The gas spring 22 has a maximum length and a minimum length, so that the telescopic assembly supports the tray assembly 30 with a maximum height and a minimum height.

[0035] In the embodiment of the present application, the projector bracket 100 may also use a motor plus a lead screw to replace the gas spring 22, thereby having the function of automatically adjusting the height.

[0036] 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 shortening 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 telescopic stage of the projector bracket 100, at least part of one 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 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, which has the effect of dust prevention and aesthetics.

[0037] 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, and the other end of the second sleeve 24 is connected to the tray assembly 30. Specifically, one end of the second sleeve 24 is connected to the sliding damping assembly 23 by a fastening connection, such as a bolt or a screw connection, and the other end of the second sleeve 24 is connected to the tray assembly 30 by a fastening connection, such as a bolt or a screw connection. The sliding damping assembly 23 can abut against the inner wall of the first sleeve 21 to generate friction to limit the relative movement of 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 taken as a whole, that is, the structure in which the projector bracket 100 and the projector 200 can be relatively displaced relative to the base 10 is taken as a whole, and the thrust, friction and gravity of the gas spring 22 are balanced, so that the whole and the base 10 remain relatively static, that is, the projector 200 can be suspended at a certain height. When the user pushes the projector 200 upward or downward with a small force, the force balance state is destroyed, and the projector 200 can move up or down with the user's thrust, thereby adjusting the position of the projector 200. When the user removes the thrust, the above-mentioned whole returns to the force balance state to maintain the static state, and the projector is adjusted to a new height position. In the above steps, the mechanical lock-type unlocking or locking action required by other projector brackets 100 is omitted.

[0038] In some embodiments, please refer to Figure 4 as well as Figure 5 , Figure 5 for Figure 4 2 is an enlarged schematic diagram of a part A of the slide damping assembly 23, wherein the slide damping assembly 23 includes a fixing seat 231 and a damping block 232. The fixing seat 231 is a hollow structure, and the gas spring 22 is disposed in the hollow structure. It can be understood that the hollow structure of the fixing seat 231 is also conducive to reducing the mass of the fixing seat 231 and improving the flexibility of the telescopic adjustment of the projector bracket 100.

[0039] The damping block 232 is connected to the fixing seat 231, and is disposed between the fixing seat 231 and the inner wall of the first sleeve 21, and the damping block 232 abuts against the inner wall of the first sleeve 21. When there are multiple damping blocks 232, the damping blocks 232 can be disposed on the peripheral side of the fixing seat 231 to generate frictional forces at multiple locations in a balanced manner. The damping block 232 can be made of plastic or rubber.

[0040] The sliding damping assembly 23 further includes a pulley 233, which is connected to the fixing seat 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 a force to the tray assembly 30 or the second sleeve 24, the pulley 233 slides relative to the slide rail 211 to play a rolling guide role in the process of adjusting the relative position of the first sleeve 21 and the second sleeve 24, so as to reduce friction, make the adjustment process smoother, and provide a better user experience. The pulley 233 may be made of metal. The pulley 233 can facilitate the rapid movement of the projector bracket 100.

[0041] In some embodiments, please refer to Figure 1 , Figure 2 as well as Figure 4 The projector bracket 100 further includes a sleeve locking assembly 40, which is disposed at one end of the first sleeve 21 away from the base 10, and is used to block the gap between the first sleeve 21 and the second sleeve 24. It is understandable that since 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, causing dust to enter or an unsightly appearance. By arranging the sleeve locking assembly 40 at one 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 blocked to prevent dust from entering, which is also beneficial to the overall aesthetics.

[0042] Please continue to read Figure 4The sleeve lock includes a first sleeve lock 41 and a second sleeve lock 42. The first sleeve lock 41 is arranged at an end of the first sleeve 21 away from the base 10, and the first sleeve lock 41 is clamped with the inner side of the first sleeve 21. The second sleeve lock 42 is arranged at an end of the first sleeve lock 41 away from the first sleeve 21, and the second sleeve lock 42 is clamped with the outer side of the first sleeve lock 41.

[0043] The first sleeve lock buckle 41 can play a bridging role. On the one hand, it is clamped with the inner side of the first sleeve 21, and on the other hand, it is clamped with the inner side of the second sleeve lock buckle 42 to fix the second sleeve lock buckle 42 on the first sleeve 21, so that the second sleeve 24 blocks the gap between the first sleeve 21 and the second sleeve 24 to prevent dust from entering from the gap, which is also beneficial to the overall aesthetics.

[0044] In some embodiments, please refer to Figure 2 as well as Figure 4 The tray assembly 30 includes a cross bar 31 and a tray body 32 . The cross bar 31 is connected to the second sleeve 24 . The length direction of the cross bar 31 intersects with the extension direction of the second sleeve 24 . The other end of the second sleeve 24 is connected to the cross bar 31 .

[0045] Since the weight of the projector 200 is relatively large, in order to increase the reliability of the connection between the projector bracket 100 and the projector 200, the tray assembly 30 includes a cross bar 31 and a tray body 32, and the cross bar 31 and the second sleeve 24 can be arranged vertically to increase the connection area with the tray body 32, which is conducive to fixing the tray body 32 more firmly. It can be understood that in this case, the second sleeve 24 can be perpendicular to the horizontal plane (bearing surface), and accordingly, the cross bar 31 is parallel to the horizontal plane. Among them, the tray assembly 30 also includes a third sleeve 33, the third sleeve 33 is sleeved outside the cross bar 31, and the third sleeve 33 is connected to the tray body 32. The connection between the third sleeve 33 and the tray body 32 is a fastening connection, such as fixing by bolts or screws. The connection between the third sleeve 33 and the cross bar 31 is a fastening connection, such as connecting with bolts or screws. The third sleeve 33 is a hollow structure. The third sleeve 33 can be set as a handle, which is conducive to the user's hand holding. The third sleeve 33 can improve 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 set to the same material and appearance, which is conducive to improving overall harmony.

[0046] In addition, the cross-sectional area of ​​the third sleeve 33 is greater than the cross-sectional area of ​​the cross bar 31 , which is beneficial to improving the tightness of the connection with the tray body 32 , thereby being able to support a heavier projector 200 and improving overall reliability.

[0047] See also Figure 6 as well as Figure 7 , Figure 6 A schematic diagram of the structure of the base provided in the embodiment of the present application, Figure 7 An exploded schematic diagram of a base provided in an embodiment of the present application. The base 10 includes a shell 11 and a first connecting member 12. The shell 11 includes a first subshell 111 and a second subshell 112. The first subshell 111 and the second subshell 112 are arranged opposite to and connected to each other. The first subshell 111 is provided with a first opening. The first connecting member 12 is arranged inside the shell 11 and corresponds to the first opening. The first sleeve 21 is passed through the first opening and connected to the first connecting member 12. The first subshell 111 and the second subshell 112 are assembled to form a shell 11 with a accommodating space. The shell 11 has a protective effect on other structures of the base 10, and the appearance is also more beautiful. The shape of the base 10 can be circular, polygonal or irregular, and can also be flat or barreled. The shape of the base 10 provided in the embodiment of the present application is a disc.

[0048] The base 10 further includes a counterweight 13, which is disposed inside the housing 11 and connected to the first connecting member 12. The counterweight 13 and the first connecting member 12 can be fixed by an in-mold injection molding process or fasteners such as bolts or screws. The counterweight 13 increases the weight of the base 10 and improves the stability of the projector bracket 100. The counterweight 13 can be prepared by an iron sand molding method.

[0049] The base 10 also includes a second connecting member 14 and a wheel set 15 . The second sub-shell 112 is provided with a second opening. The second connecting member 14 is disposed inside the shell 11 and corresponds to the second opening. The wheel set 15 passes through the second opening and is connected to the second connecting member 14 .

[0050] The counterweight 13, the first connecting member 12 and the second connecting member 14 can be separately provided, that is, the three structural members are prepared separately and then assembled, which has the advantage that the counterweight 13 can be realized by a low-cost manufacturing process, such as an iron sand molding method. The counterweight 13, the first connecting member 12 and the second connecting member 14 can be integrally formed, eliminating the subsequent assembly process, and the counterweight 13 can be prepared by processing a pig iron block through a CNC machine tool.

[0051] The base 10 further includes a circuit board 16 and a battery 17. The circuit board 16 is disposed inside the housing 11, the circuit board 16 is connected to the second sub-housing 112, and the battery 17 is electrically connected to the circuit board 16. The battery 17 can supply power to the projector 200, and the components on the circuit board 16 can adjust the voltage provided by the battery 17 to the projector 200 to provide a stable voltage, and can also provide protection for the battery 17 when the external power supply supplies power to the battery 17.

[0052] The second sub-housing 112 is provided with a groove 1121, the notch of the groove 1121 is arranged in a direction away from the first sub-housing 111, and the groove 1121 is used to accommodate the battery 17. In other words, the groove 1121 is arranged on the surface of the housing 11, which is convenient for the subsequent maintenance and replacement of the battery 17.

[0053] The housing 11 further includes a battery cover 113, which is connected to the second sub-housing 112. The battery cover 113 is used to cover 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 formed integrally with the second sub-housing 112.

[0054] See also Figure 8 , Figure 8 Schematic diagram of an explosion of a projector bracket provided in an embodiment of the present application. The projector bracket 100 also includes a fastener 80, which is inserted into the base 10 and connected to the telescopic rod assembly 20. The housing 11 also includes a shielding cover 114, which is connected to the second sub-housing 112, and the shielding cover 114 is used to shield the fastener 80. The fastener 80 can be a quick-release screw, and the base 10 and the telescopic assembly can be quickly disassembled and assembled by the fastener 80 and the shielding cover 114. For example, during the installation process, the base 10 is connected to the telescopic rod assembly 20 by a quick-release screw. After the screw is installed, the shielding cover 114 is installed in the base 10, that is, the shielding cover 114 is connected to the second sub-housing 112. The base 10 and the telescopic rod assembly 20 are disassembled and assembled by the fastener 80, so that the projector bracket 100 can be quickly disassembled and assembled, which is convenient for storage when the projector bracket 100 is not in use or the projector bracket 100 can be reduced in size during transportation to save costs.

[0055] In some embodiments, please refer to Figure 4 , Fig. 9 as well as Fig.10 , Fig. 9 This is a fourth structural schematic diagram of a projector bracket provided in an embodiment of the present application, Fig.10 for Fig. 9 The projector bracket 100 further includes a power cord 50, which is passed 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.

[0056] In the above embodiment, the power cord 50 can not only pass through the first sleeve 21 and the second sleeve 24, but also pass through the fixing seat 231 of the sliding damping assembly 23, the crossbar 31 and / or the base 10. The power cord 50 can be electrically connected to an external power source, and can also be electrically connected to the battery 17 built into the base 10. The power cord 50 is passed through the projector bracket 100, does not leak out, and does not damage the integrity of the projector bracket 100.

[0057] The power cord 50 includes a first line segment 51 and a second line segment 52. The first line segment 51 is curved and disposed in the first sleeve 21. The first line segment 51 is disposed around the gas spring 22, and the second line segment 52 is straight. The first line segment 51 is used for storing and scaling the power cord 50 when the telescopic rod assembly 20 is extended and compressed. When the gas spring 22 is extended, the first line segment 51 of the power cord 50 changes from a curved state to a slightly straight state, and then follows the extension of the gas spring 22.

[0058] The power cord 50 includes a line body 53 and a plurality of stoppers 54, and the plurality of stoppers 54 are arranged on the line body 53. The stoppers 54 can be additionally connected with other structures of the projector bracket 100, for example, the stoppers 54 are connected to the first sleeve 21 or the base 10, and for example, the stoppers 54 are connected to the crossbar 31. Through the arrangement of the plurality of stoppers 54, the relative position of the line body 53 of the power cord 50 in the projector bracket 100 can be fixed to prevent the line body 53 from being displaced during the extension and retraction process of the telescopic assembly.

[0059] Please continue reading Figure 4 , Figure 7 as well as Fig.10 The projector bracket 100 further includes a sleeve plug 60, which is connected to one end of the first sleeve 21 away from the second sleeve 24, and is connected to the power cord 50, the gas spring 22 and the base 10. The sleeve plug 60 can fix the first sleeve 21 on the base 10, and can also fix the length of the power cord 50 reserved in the telescopic assembly. One end of the gas spring 22 is fixed on the sleeve plug 60, and the sleeve plug 60 is fixed on the base 10 to fix the relative position of the gas spring 22 and the base 10.

[0060] Please continue reading Figure 4 as well as Fig.10 The projector bracket 100 further includes an extension rod 70, which is inserted into the second sleeve 24, one end of which is connected to the gas spring 22, and the other end of which is connected to the tray assembly 30. If the initial length and stroke of the gas spring 22 are less than the designed stroke of the projection bracket, the extension rod 70 can be used to extend the effective length of the gas spring 22 to increase the height of the projector bracket 100.

[0061] In the projector bracket 100 provided in the embodiment of the present application, the projector bracket 100 includes a base 10, a telescopic rod assembly 20 and a tray assembly 30 connected in sequence, and 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 to limit the relative movement of the base 10 and the tray assembly 30. It can be understood that the projector 200, the tray assembly 30, the second sleeve 24 and the sliding damping assembly 23 placed on the tray assembly 30 are taken as a whole, and the thrust, friction and gravity of the gas spring 22 are balanced, so that the whole and the base 10 and the second sleeve 24 remain in a relatively static state, that is, the projector 200 can be suspended at a certain height. When the user pushes the projector 200 upward or downward, the force balance state is destroyed, and the projector 200 can move up or down following the thrust of the user, thereby adjusting the position of the projector 200. When the user removes the thrust, the whole returns to a force-balanced state, so that the projector bracket 100 can assist the projector 200 to hover at any position within a certain travel range, thereby simplifying user operations.

[0062] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0063] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0064] The projector bracket provided in the embodiment of the present application is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the present application. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A projector stand, comprising 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, wherein the first sleeve is connected to the base; one end of the gas spring is inserted through the first sleeve and connected to the base, and the other end of the gas spring is inserted through the second sleeve and connected to the tray assembly; one end of the second sleeve is connected to the sliding damping assembly, and the sliding damping assembly extends into the first sleeve, and the other end of the second sleeve is connected to the tray assembly; wherein, The sliding damping assembly can abut against the inner wall of the first sleeve to generate friction force, so as to limit the relative movement between the base and the tray assembly.

2. According to the projector bracket according to claim 1, the sliding damping assembly includes a fixed seat and a damping block, the fixed seat is a hollow structure, the gas spring is passed through the fixed seat, the damping block is connected to the fixed seat, the damping block is arranged between the fixed seat and the inner wall of the first sleeve, and the damping block abuts against the inner wall of the first sleeve.

3. According to the projector bracket of claim 2, the sliding damping assembly further comprises a pulley, and the pulley is connected to the fixing seat; a sliding rail is arranged on the inner side of the first sleeve, and the sliding rail is slidably connected to the pulley.

4. The projector bracket according to claim 1 further comprises a sleeve locking assembly, wherein the sleeve locking assembly is arranged at an end of the first sleeve away from the base, and the sleeve locking assembly is used to cover a gap between the first sleeve and the second sleeve.

5. According to the projector bracket according to claim 4, the sleeve lock includes a first sleeve lock and a second sleeve lock, the first sleeve lock is arranged at an end of the first sleeve away from the base, and the first sleeve lock is clamped with the inner side of the first sleeve, and the second sleeve lock is arranged at an 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. According to the projector bracket according to claim 1, the tray assembly includes a cross bar and a tray body, the cross bar is connected to the second sleeve, the length direction of the cross bar intersects with the extension direction of the second sleeve; the other end of the second sleeve is connected to the cross bar. 7 . The projector bracket according to claim 6 , wherein the tray assembly further comprises a third sleeve, wherein the third sleeve is sleeved outside the cross bar, and the third sleeve is connected to the tray body.

8. According to the projector bracket according to claim 1, the base includes a shell and a first connecting piece, the shell includes a first sub-shell and a second sub-shell, the first sub-shell and the second sub-shell are arranged opposite to and connected, a first opening is arranged on the first sub-shell, the first connecting piece is arranged inside the shell and corresponds to the first opening, and the first sleeve is passed through the first opening and connected to the first connecting piece. 9 . The projector bracket according to claim 8 , wherein the base further comprises a counterweight, the counterweight is disposed inside the shell, and the counterweight is connected to the first connecting member.

10. According to the projector bracket according to claim 8, the base also includes a second connecting member and a wheel group, a second opening is provided on the second sub-shell, the second connecting member is provided inside the shell and corresponds to the second opening, and the wheel group passes through the second opening and is connected to the second connecting member. 11 . The projector bracket according to claim 8 , wherein the base further comprises a circuit board and a battery, wherein the circuit board is disposed inside the housing, the circuit board is connected to the second sub-housing, and the battery is electrically connected to the circuit board. 12 . The projector bracket according to claim 11 , wherein a groove is provided on the second sub-housing, a notch of the groove is arranged in a direction away from the first sub-housing, and the groove is used to accommodate the battery. 13 . The projector bracket according to claim 12 , wherein the housing further comprises a battery cover, the battery cover is connected to the second sub-housing, and the battery cover is used to cover the groove.

14. The projector bracket according to claim 8, further comprising a fastener, wherein the fastener is passed through the base and connected to the telescopic rod assembly, and the shell further comprises a shielding cover, wherein the shielding cover is connected to the second sub-shell, and the shielding cover is used to shield the fastener. 15 . The projector bracket according to claim 1 , further comprising a power cord, wherein the power cord is passed through the first sleeve and the second sleeve. 16 . The projector bracket according to claim 15 , wherein the power cord comprises a first line segment and a second line segment, wherein the first line segment is curved, disposed in the first sleeve, and disposed around the gas spring, and the second line segment is straight. 17 . The projector bracket according to claim 15 , wherein the power cord comprises a cord body and a limiting member, and the limiting member is arranged on the cord body.

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

19. The projector bracket according to claim 1, further comprising an extension rod, one end of which is connected to the gas spring, and the other end of which is connected to the tray assembly. 20 . The projector bracket according to claim 1 , wherein a cross section of the first sleeve and / or the second sleeve is circular, elliptical or polygonal.

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