A portable projection screen

Abstract

This utility model relates to a movable projection screen, comprising a ground track device, a support, and a screen. The support is mounted on the ground track device and can move back and forth along the ground track device. The screen is mounted on the support. The ground track device includes a track assembly, at least two drive components, and at least two moving components. The support is mounted on the moving components. The drive components are connected to the moving components, and the moving components are movably connected to the track assembly. The advantages of this utility model are that it can be moved flexibly and stably, effectively improving the projection effect and the utilization rate of space.

Description

Technical Field

[0001] This utility model relates to the field of projection screen technology, specifically to a movable projection screen. Background Technology

[0002] In today's various exhibition, teaching and conference scenarios, projection screens are widely used as important visual display equipment. Traditional projection screens mostly adopt a fixed installation method, which has many obvious limitations.

[0003] On the one hand, once the location of a fixed projection screen is determined, it is difficult to change. In actual use, different projection devices are installed in different locations, and the viewing angle of the audience will vary depending on the venue layout and the type of event. However, a fixed screen cannot be flexibly adjusted according to these actual conditions, resulting in poor projection effect and the audience may not be able to have a good viewing experience.

[0004] On the other hand, fixed projection screens occupy fixed space for extended periods when not in use. This is especially problematic in multi-functional venues where frequent changes in function are required. Fixed screens cannot be stored away, severely limiting the flexibility of the space. For example, some exhibition halls not only display products but may also host various events. The presence of a fixed screen reduces the space utilization efficiency of the venue and fails to meet diverse usage needs. Utility Model Content

[0005] The purpose of this invention is to provide a movable projection screen that is flexible and stable during movement, and can effectively improve the projection effect and space utilization.

[0006] A movable projection screen includes a ground track device, a bracket, and a screen. The bracket is mounted on the ground track device and can move back and forth along the ground track device. The screen is mounted on the bracket. The ground track device includes a track assembly, at least two drive assemblies, and at least two moving assemblies. The bracket is mounted on the moving assemblies. The drive assemblies are connected to the moving assemblies, and the moving assemblies are movably connected to the track assembly.

[0007] In the above solution, the bracket is mounted on the moving component, and the drive component can drive the moving component to move on the track component, thereby causing the bracket to slide along the track component's trajectory, and thus moving the position of the screen. This design can ensure the stability and smoothness of the movement process, avoiding screen shaking and instability. The screen can be moved to the optimal projection position according to the location of the projection equipment, the audience's viewing angle, and the layout of the venue, improving the projection effect and the audience's viewing experience. When the projection screen is not in use, it can be moved to a designated storage location to reduce space occupation, and when it is needed, the screen can be quickly moved to the usage position, which is convenient and fast. This mobility makes the arrangement and storage of the screen easier and improves the space utilization of the venue.

[0008] Furthermore, the track assembly includes a track body, a rack, and a guide rail. Several track bodies are spliced ​​together, and a guide rail is installed on the track body. The track body is provided with a mounting groove, and multiple racks are installed on the mounting groove.

[0009] In the above scheme, the design of several rail bodies splicing together allows the length of the rail assembly to be flexibly adjusted according to the size and layout of the actual use site. The volume and weight of a single rail body are relatively small, making it easy to transport and handle. The drive assembly can drive the moving component to move along the rail assembly through cooperation with the rack and pinion, so that the screen can maintain a stable speed and accurate position control during the movement. The guide rail is installed on the rail body, which can provide precise movement guidance for the moving component. The moving component can move smoothly along the trajectory of the guide rail, ensuring that the projection screen will not deviate from the track during the movement, thus guaranteeing the accuracy and stability of the screen movement.

[0010] Furthermore, the moving component includes a base plate, a sliding block, and a connecting seat. The sliding block is slidably disposed on the guide rail, the base plate is connected to the sliding block, the connecting seat is mounted on the base plate, and the bracket is mounted on the connecting seat.

[0011] In the above scheme, sliding blocks are set on the guide rail, and several sliding blocks are connected to both sides of the base plate. This allows the driving component to drive the base plate to slide along the guide rail. The bracket is mounted on a connecting seat connected to the base plate, enabling the bracket to move along the track assembly. This ensures that the projection screen will not shift or shake during movement, and can accurately reach the designated position, greatly improving the accuracy and stability of the projection screen's movement, thereby enhancing the projection effect.

[0012] Furthermore, the bracket includes a first connecting frame, a second connecting frame, and a third connecting frame. The first connecting frame and the second connecting frame are respectively mounted on two connecting seats, and the two ends of the third connecting frame are respectively connected to the first connecting frame and the second connecting frame.

[0013] In the above scheme, at least two movable components are installed on the track assembly. The first connecting frame and the second connecting frame are respectively installed on the two movable components, and the first connecting frame and the second connecting frame are connected by a third connecting frame. This enables the bracket to slide smoothly on the track assembly, and the curtain is installed on the bracket, which facilitates the adjustment of the curtain's position.

[0014] Furthermore, the drive assembly includes a drive component, a right-angle reducer, and a transmission gear. The output end of the drive component is connected to the right-angle reducer, the transmission gear is connected to the output shaft of the right-angle reducer, and the transmission gear meshes with the rack.

[0015] In the above scheme, the drive component serves as the power source, and its output end is connected to a right-angle reducer. The right-angle reducer can effectively adjust and optimize the power output of the drive component, and transmit the power to the transmission gear stably and efficiently. The use of the right-angle reducer allows the power output direction of the drive component to change by 90 degrees. During this process, the right-angle reducer can reasonably match the speed and torque according to actual needs, ensuring that the drive component can provide sufficient and stable power for the movement of the projection screen, and ensuring the smoothness of the screen movement.

[0016] Furthermore, the drive assembly also includes a lubrication assembly, which includes a lubricator, a lubrication shaft, and a lubrication wheel. The lubricator is fixed to the base plate, one end of the lubrication shaft is connected to the lubricator, and the other end passes through the base plate and is connected to the lubrication wheel. The lubrication wheel contacts the rack.

[0017] In the above solution, the lubrication wheel is in direct contact with the rack. The lubricator delivers lubricant to the lubrication wheel via a lubrication shaft, which then coats the rack surface. A well-lubricated rack, when meshing with the transmission gears, avoids jamming and jumping caused by uneven friction, resulting in more continuous and stable power transmission. This ensures the smoothness of the projection screen during movement. This is crucial for projection systems that require precise control of the screen's position and speed, ensuring the stability and accuracy of the projected image and enhancing the user's viewing experience.

[0018] This invention provides a movable projection screen with the advantages of flexible and stable movement, effectively improving projection quality and space utilization. The support frame is mounted on a movable component, and a drive component propels the movable component along a track component, causing the support frame to slide along the track, thus moving the screen's position. This design ensures stability and smoothness during movement, preventing screen swaying and instability. The screen can be moved to the optimal projection position based on the location of the projection equipment, the audience's viewing angle, and the venue layout, improving projection quality and the audience's viewing experience. When not in use, the projection screen can be moved to a designated storage location, reducing space occupation. When needed, the screen can be quickly moved back to its operating position, offering convenience and speed. This mobility makes screen setup and storage easier, improving space utilization. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a movable projection screen according to one embodiment.

[0020] Figure 2 This is a perspective view of a ground track device according to one embodiment.

[0021] Figure 3 This is a schematic diagram showing the connection of the ground rail assembly, drive assembly, and moving assembly according to one embodiment.

[0022] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0023] Figure 5 for Figure 3 A magnified view of a section at point B.

[0024] Figure 6 This is a schematic diagram of a driver component according to one embodiment.

[0025] Figure 7 This is an exploded view of the bracket and screen in one embodiment.

[0026] Explanation of reference numerals in the attached drawings: 1. Ground track device; 11. Track assembly; 111. Rail body; 112. Rack; 113. Guide rail; 12. Moving assembly; 121. Base plate; 122. Sliding block; 123. Connecting seat; 13. Drive assembly; 131. Drive component; 132. Transmission wheel; 133. Right angle reducer; 134. Lubrication assembly; 1341. Lubricator; 1342. Lubrication shaft; 1343. Lubrication wheel; 2. Bracket; 21. First connecting frame; 22. Second connecting frame; 23. Third connecting frame; 3. Curtain; 4. Mounting slot. Detailed Implementation

[0027] The present invention provides a more detailed description of a movable projection screen in conjunction with specific embodiments and accompanying drawings.

[0028] like Figure 1 and Figure 2 As shown in a preferred embodiment, a movable projection screen 3 of the present invention includes a ground track device 1, a bracket 2 and a screen 3. The bracket 2 is mounted on the ground track device 1 and can move back and forth along the ground track device 1. The screen 3 is mounted on the bracket 2. The ground track device 1 includes a track assembly 11, at least two drive assemblies 13 and at least two moving assemblies 12. The bracket 2 is mounted on the moving assemblies 12. The drive assemblies 13 are connected to the moving assemblies 12, and the moving assemblies 12 are movably connected to the track assembly 11. The bracket 2 is mounted on the moving component 12. The driving component 13 can drive the moving component 12 to move on the track component 11, thereby causing the bracket 2 to slide along the track component 11 and thus move the position of the screen 3. This design can ensure the stability and smoothness of the movement process, avoiding the shaking and instability of the screen 3. The screen 3 can be moved to the optimal projection position according to the position of the projection equipment, the viewing angle of the audience, and the layout of the venue, improving the projection effect and the viewing experience of the audience. When the projection screen 3 is not needed, it can be moved to a designated storage position to reduce space occupation. When it is needed, the screen 3 can be quickly moved to the usage position, which is convenient and fast. This mobility makes the arrangement and storage of the screen 3 easier and improves the space utilization of the venue.

[0029] like Figures 2 to 4 As shown, in some embodiments, the track assembly 11 includes a track body 111, a rack 112, and a guide rail 113. Several track bodies 111 are spliced ​​together, and guide rails 113 are mounted on the track bodies 111. The track bodies 111 have mounting grooves 4, and multiple racks 112 are mounted on the mounting grooves 4. This splicing design of several track bodies 111 allows the length of the track assembly 11 to be flexibly adjusted according to the size and layout of the actual usage site. The volume and weight of a single track body 111 are relatively small, facilitating transportation and handling. The drive assembly 13, through its cooperation with the rack 112, drives the moving assembly 12 to move along the track assembly 11, ensuring that the projection screen 3 maintains a stable speed and accurate position control during movement. The guide rail 113, mounted on the track body 111, provides precise movement guidance for the moving assembly 12, allowing it to move smoothly along the trajectory of the guide rail 113. This ensures that the projection screen 3 does not deviate from the track during movement, guaranteeing the accuracy and stability of the screen 3's movement.

[0030] like Figure 5As shown, in some embodiments, the moving component 12 includes a base plate 121, a sliding block 122, and a connecting seat 123. The sliding block 122 is slidably mounted on the guide rail 113. The base plate 121 is connected to the sliding block 122, the connecting seat 123 is mounted on the base plate 121, and the bracket 2 is mounted on the connecting seat 123. The sliding block 122 is mounted on the guide rail 113, and several sliding blocks 122 are connected to both sides of the base plate 121. This allows the driving component 131 to drive the base plate 121 to slide along the guide rail 113. The bracket 2 is mounted on the connecting seat 123 connected to the base plate 121, enabling the bracket 2 to move along the track assembly 11. This ensures that the projection screen 3 will not shift or shake during movement, and can accurately reach the designated position, greatly improving the accuracy and stability of the projection screen 3's movement, thereby enhancing the projection effect.

[0031] like Figure 7 As shown, in some embodiments, the support 2 includes a first connecting frame 21, a second connecting frame 22, and a third connecting frame 23. The first connecting frame 21 and the second connecting frame 22 are respectively mounted on two connecting seats 123, and the two ends of the third connecting frame 23 are respectively connected to the first connecting frame 21 and the second connecting frame 22. At least two moving components 12 are mounted on the track assembly 11, and the first connecting frame 21 and the second connecting frame 22 are respectively mounted on the two moving components 12. The first connecting frame 21 and the second connecting frame 22 are connected through the third connecting frame 23, thus enabling the support 2 to slide smoothly on the track assembly 11. The curtain 3 is mounted on the support 2, facilitating the adjustment of the position of the curtain 3.

[0032] like Figure 5 and Figure 6 As shown, in some embodiments, the drive assembly 13 includes a drive element 131, a right-angle reducer 133, and a transmission gear 132. The output end of the drive element 131 is connected to the right-angle reducer 133, and the transmission gear 132 is connected to the output shaft of the right-angle reducer 133. The transmission gear 132 meshes with the rack 112. The drive element 131 serves as a power source, and its output end is connected to the right-angle reducer 133. The right-angle reducer 133 can effectively adjust and optimize the power output of the drive element 131, transmitting the power stably and efficiently to the transmission gear 132. The use of the right-angle reducer 133 allows the power output direction of the drive assembly 13 to change by 90 degrees. During this process, the right-angle reducer 133 can reasonably match the speed and torque according to actual needs, ensuring that the drive assembly 13 can provide sufficient and stable power for the movement of the projection screen 3, thus ensuring the smooth movement of the screen 3.

[0033] like Figure 5 and Figure 6As shown, in some embodiments, the drive assembly 13 further includes a lubrication assembly 134. The lubrication assembly 134 includes a lubricator 1341, a lubrication shaft 1342, and a lubrication wheel 1343. The lubricator 1341 is fixed on the base plate 121. One end of the lubrication shaft 1342 is connected to the lubricator 1341, and the other end passes through the base plate 121 and is connected to the lubrication wheel 1343. The lubrication wheel 1343 contacts the rack 112. The lubrication wheel 1343 is in direct contact with the rack 112. The lubricator 1341 delivers lubricant to the lubrication wheel 1343 through the lubrication shaft 1342, which then coats the surface of the rack 112. A well-lubricated rack 112 can avoid jamming and jumping caused by uneven friction when meshing with the transmission gear 132, resulting in more continuous and stable power transmission, thus ensuring the stability of the projection screen 3 during movement. This is crucial for projection systems that require precise control of the position and speed of the screen 3, ensuring the stability and accuracy of the projected image and improving the user's viewing experience.

[0034] The working principle and process of a movable projection screen 3 of this utility model are as follows: the driving component 131 drives the transmission gear 132 to rotate, and the transmission gear 132 meshes with the rack 112 to drive the transfer component to move, thereby driving the bracket 2 and the screen 3 to move along the track component 11. The lubrication wheel 1343 is in direct contact with the rack 112. During the movement of the transfer component, the lubricator 1341 in front of the driving component 13 delivers lubricant to the lubrication wheel 1343 through the lubrication shaft 1342, and then applies it to the surface of the rack 112.

[0035] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A movable projection screen, characterized in that, The device includes a ground track assembly, a support frame, and a curtain. The support frame is mounted on the ground track assembly and can move back and forth along the ground track assembly. The curtain is mounted on the support frame. The ground track assembly includes a track assembly, at least two drive assemblies, and at least two moving assemblies. The support frame is mounted on the moving assemblies. The drive assemblies are connected to the moving assemblies, and the moving assemblies are movably connected to the track assembly.

2. The movable projection screen according to claim 1, characterized in that, The track assembly includes a track body, a rack, and a guide rail. Several track bodies are spliced ​​together, and a guide rail is installed on the track body. The track body is provided with a mounting groove, and multiple racks are installed on the mounting groove.

3. The movable projection screen according to claim 2, characterized in that, The moving component includes a base plate, a sliding block, and a connecting seat. The sliding block is slidably disposed on the guide rail. The base plate is connected to the sliding block. The connecting seat is mounted on the base plate, and the bracket is mounted on the connecting seat.

4. The movable projection screen according to claim 3, characterized in that, The bracket includes a first connecting frame, a second connecting frame, and a third connecting frame. The first connecting frame and the second connecting frame are respectively mounted on two connecting seats, and the two ends of the third connecting frame are respectively connected to the first connecting frame and the second connecting frame.

5. The movable projection screen according to claim 3, characterized in that, The drive assembly includes a drive component, a right-angle reducer, and a transmission gear. The output end of the drive component is connected to the right-angle reducer, the transmission gear is connected to the output shaft of the right-angle reducer, and the transmission gear meshes with the rack.

6. The movable projection screen according to claim 5, characterized in that, The drive assembly also includes a lubrication assembly, which includes a lubricator, a lubrication shaft, and a lubrication wheel. The lubricator is fixed to the base plate. One end of the lubrication shaft is connected to the lubricator, and the other end passes through the base plate and is connected to the lubrication wheel. The lubrication wheel contacts the rack.

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