A curtain insert structure

Abstract

The utility model provides a curtain plug -in structure, including the shell, curtain mechanism is installed in the shell, at least one end of the shell is installed and is connected with the plug -in mechanism, the plug -in mechanism includes the socket mechanism of fixed connection with the shell end and the external connection mechanism of detachable connection with socket mechanism, one side of socket mechanism is provided with at least one connecting part, the external connection mechanism is corresponded and is equipped with the butt joint portion of cooperation with connecting part, one side of external connection mechanism is provided with the plug end, one side of socket mechanism is provided with the socket end of electric connection with plug end, in the utility model, through setting the plug -in mechanism at least one end of the shell, realizes the detachable connection of external connection mechanism, has solved the problem that traditional projection screen function is single, and the extensibility is poor and the external device wiring is messy.

Description

Technical Field

[0001] This utility model relates to the field of projection screen technology, and in particular to a screen plug-in structure. Background Technology

[0002] With the rapid development of multimedia technology and smart homes, projection equipment has been widely used in various scenarios such as home theaters, conference presentations, and education and training. As a key component for presenting visual information, the projection screen is evolving from a single display medium towards integration, intelligence, and multi-functionality. To enhance the user's immersive experience, the industry has begun to explore integrating auxiliary functions such as audio and environmental adjustment with the projection screen to achieve better sensory synergy.

[0003] However, most existing projection screen systems only have display functions. To achieve additional experiences such as sound playback or air conditioning, they typically rely on external, separate devices, such as speakers or aroma diffusers. The separate placement of these devices from the projection screen not only leads to cluttered wiring on the desktop or in the space, affecting the overall aesthetics, but also increases the complexity of installation and management for users. More importantly, current technology lacks a compact, easily expandable, and flexibly replaceable functional module integration solution, making it difficult to meet users' needs for personalized, modular smart terminals.

[0004] Furthermore, traditional integrated designs often permanently fix functions such as audio or aromatherapy within the projection screen, making these functions unreplaceable and difficult to upgrade. If a module fails, the entire system must be repaired or replaced, increasing operating costs. At the same time, different users have varying needs for additional functions, and fixed configurations can easily lead to resource waste. Therefore, there is an urgent need for an external expansion structure for projection screens that supports quick assembly and disassembly and allows for flexible combination of functional modules to solve these problems.

[0005] The purpose of this invention is to solve the problems of existing projection screens having limited functionality, messy wiring of external devices, and difficulty in quickly replacing and flexibly expanding functional modules. Utility Model Content

[0006] The purpose of this invention is to solve the problems of existing projection screens having limited functionality, messy wiring for external devices, and difficulty in quickly replacing and flexibly expanding functional modules. This invention adopts the following technical solution:

[0007] A screen insert structure includes a housing, within which a screen mechanism is installed. At least one end of the housing is fitted with a plug-in mechanism. The plug-in mechanism includes a socket mechanism fixedly connected to the end of the housing and an external mechanism detachably connected to the socket mechanism. At least one connecting portion is provided on one side of the socket mechanism, and a corresponding mating portion of the external mechanism mates with the connecting portion. A plug end is provided on one side of the external mechanism, and a socket end electrically connected to the plug end is provided on one side of the socket mechanism.

[0008] As described above, in a curtain plug-in structure, the connecting part is a hook, the docking part is a hanging groove formed on the external mechanism, the top of the hanging groove is provided with a hanging hole, the hanging hole matches the hook, and the hanging hole is used to provide space for the hook to engage when the external mechanism is inserted into place.

[0009] As described above, in a curtain plug-in structure, one side of the socket mechanism is provided with a first V-shaped protrusion with elasticity, and the external connection mechanism is provided with a second V-shaped protrusion that matches the first V-shaped protrusion, and the second V-shaped protrusion engages with the first V-shaped protrusion.

[0010] In the curtain plug-in structure described above, at least one slider is provided on the side of the socket mechanism that docks with the external mechanism. One end of the slider is chamfered, and a monocular groove is provided on one side of the external mechanism that is slidably connected to the slider. The slider is used to provide guidance and pre-positioning for the external mechanism during the plugging process.

[0011] As described above, in a screen insert structure, the outer edge of the socket mechanism is provided with several locking blocks. The socket mechanism is engaged with one end of the outer shell through the locking blocks. The inner wall of the outer shell is provided with several axially extending connecting grooves. The socket mechanism is provided with corresponding connecting holes that match the positions of the connecting grooves. By inserting fasteners into the connecting holes and cooperating with the connecting grooves, the socket mechanism and the outer shell can be fixedly connected.

[0012] As described above, a curtain insert structure includes a support, a drive component mounted on one side of the support, a rotating shaft connected to the power output end of the drive component, a curtain wound around the outer circumference of the rotating shaft, a positioning pin fixedly connected to the other side of the support, and a clearance hole matching the positioning pin in the socket mechanism.

[0013] As described above, in a curtain insert structure, a guide block is provided on one side of the socket mechanism, and a second inclined surface is provided on one side of the guide block. The outer shell includes a limiting strip, and an avoidance groove is provided on the limiting strip for the curtain to pass through. Both ends of the limiting strip are provided with a first inclined surface, and the first inclined surface matches the second inclined surface on the guide block.

[0014] As described above, in a curtain insert structure, the inner cavity of the outer shell is provided with a guide plate, which is located on the unfolding path of the curtain and is used to guide the curtain during the winding and unfolding process.

[0015] In the curtain plug-in structure described above, the socket mechanism is made of either ABS plastic or PC plastic.

[0016] As described above, in a curtain insert structure, at least one LED strip groove is provided on the surface of the outer shell, and the LED strip groove is arranged along the length direction of the outer shell.

[0017] Implementing the embodiments of this utility model has the following beneficial effects:

[0018] 1. In this utility model, by providing a plug-in mechanism at at least one end of the outer shell, the external mechanism can be detachably connected, which solves the problems of traditional projection screens having single function, poor expandability, and messy wiring of external devices; the cooperation between the connecting part and the docking part allows the external mechanism to be quickly and stably hung on the mounting plate, and the plug end and the socket end achieve electrical connection, achieving a plug-and-play effect, which facilitates the flexible replacement and expansion of functional modules; the overall structure is easy to assemble and stable in operation, which significantly improves the user experience and the degree of product integration. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a curtain plug-in structure according to this utility model.

[0021] Figure 2 This is an exploded view of a curtain plug-in structure according to this utility model.

[0022] Figure 3 This is a schematic diagram of the outer shell of a curtain plug-in structure according to this utility model.

[0023] Figure 4This is a schematic diagram of the insertion mechanism of a curtain plug-in structure according to this utility model.

[0024] Figure 5 yes Figure 4 A structural diagram from another angle.

[0025] Figure 6 This is a schematic diagram of the external connection mechanism of a curtain plug-in structure according to this utility model.

[0026] Figure 7 This is a schematic diagram of the curtain mechanism of a curtain plug-in structure according to this utility model.

[0027] Figure 8 This is a schematic diagram of the limiting strip of a curtain plug structure according to this utility model.

[0028] As shown in the figure:

[0029] 1. Outer shell; 11. Limiting strip; 111. First inclined surface; 12. Guide plate; 13. LED strip groove; 14. Connecting groove; 2. Plug-in mechanism; 21. Socket mechanism; 211. Socket end; 212. Locking block; 213. Guide block; 214. Second inclined surface; 215. Clearance hole; 216. First V-shaped protrusion; 217. Connecting part; 218. Slider; 22. External connection mechanism; 221. Hanging groove; 2211. Hanging hole; 222. Peripheral groove; 223. Plug end; 224. Groove; 225. Second V-shaped protrusion; 3. Screen mechanism; 31. Driving component; 32. Screen; 33. Support; 34. Rotating shaft; 35. Positioning pin. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1 to 8As shown, this utility model proposes a screen insertion structure, including a housing 1, a screen mechanism 3 installed inside the housing 1, and a plug-in mechanism 2 installed at least one end of the housing 1. The plug-in mechanism 2 includes a socket mechanism 21 fixedly connected to the end of the housing 1 and an external mechanism 22 detachably connected to the socket mechanism 21. At least one connecting portion 217 is provided on one side of the socket mechanism 21, and the external mechanism 22 is provided with a mating portion 221 corresponding to the connecting portion 217. A plug end 223 is provided on one side of the external mechanism 22, and a socket end 211 electrically connected to the plug end 223 is provided on one side of the socket mechanism 21. During assembly, the external mechanism 22 is inserted after aligning its mating portion 221 with the connecting portion 217 on the socket mechanism 21, thus achieving a mechanical connection. Specifically, the connecting part 217 and the docking part 221 cooperate to stably attach the external mechanism 22 to the socket mechanism 21; simultaneously, the plug end 223 on one side of the external mechanism 22 contacts the socket end 211 on the socket mechanism 21, achieving electrical connection. The socket mechanism 21 is fixedly connected to the end of the housing 1. By providing a plugging mechanism 2 at at least one end of the housing 1, the external mechanism 22 is detachably connected, solving the problems of limited functionality and poor expandability of traditional projection screens. The cooperative structure of the connecting part 217 and the docking part 221 facilitates quick installation and disassembly, and the plug end 223 and the socket end 211 achieve electrical conductivity, avoiding the messy wiring caused by external devices. The overall structure realizes plug-and-play functionality and flexible expansion of the functional modules.

[0032] Optionally, in some embodiments, the socket mechanism 21 is made of either ABS plastic or PC plastic. ABS plastic or PC plastic has good mechanical strength, toughness, and processing performance, which can meet the assembly strength requirements of structural components, while also having a certain elastic deformation capacity, which is beneficial for the smooth assembly and long-term use of snap-fit ​​and plug-in structures.

[0033] Furthermore, as a preferred embodiment of this utility model and not a limitation, the connecting part 217 is a hook, and the docking part 221 is a hanging groove formed on the external mechanism 22. The top of the hanging groove has a hanging hole 2211, which matches the hook. The hanging hole 2211 provides space for the hook to engage when the external mechanism 22 is inserted into place. During the insertion of the external mechanism 22, the hanging groove aligns with the hook, and as it is inserted, the hook enters the hanging hole 2211 at the top of the hanging groove. The hanging hole 2211 matches the hook, achieving engagement after insertion and preventing the external mechanism 22 from disengaging from the hanging plate 213 in the radial direction, thus completing the locking of the mechanical connection. This ensures a good limiting effect after the connection is in place, preventing loosening due to vibration or external force during use. This structure is simple, easy to assemble, and improves the stability of the modular connection.

[0034] Optionally, in some embodiments, the mating part 221 is a magnet, and the connecting part 217 is also a magnet, with the two achieving a mechanical connection through magnetic attraction. When the external mechanism 22 approaches the socket mechanism 21, the magnetic connecting part 217 on the mounting plate 213 and the magnetic mating part 221 on the external mechanism 22 attract and engage with each other, achieving rapid positioning and a stable connection, while still retaining the electrical conductivity between the plug end 223 and the socket end 211. This magnetic connection method simplifies the insertion operation, achieving automatic attraction without precise alignment, and improving installation convenience.

[0035] Furthermore, as a preferred embodiment and not a limitation of this utility model, the socket mechanism 21 is provided with a first V-shaped protrusion 216 with elasticity on one side, and the external mechanism 22 is provided with a second V-shaped protrusion 225 that matches the first V-shaped protrusion 216. The second V-shaped protrusion 225 engages with the first V-shaped protrusion 216. When the external mechanism 22 is inserted into the socket mechanism 21, the first V-shaped protrusion 216 and the second V-shaped protrusion 225 move relative to each other axially, and their inclined surfaces come into contact and produce elastic deformation. As the insertion is complete, the elasticity recovers, causing the two protrusions to re-engage, achieving a tight connection. When it is necessary to remove the external mechanism 22, an external force is applied to make the first V-shaped protrusion 216 press against the second V-shaped protrusion 225, forcing the first V-shaped protrusion 216 to produce elastic deformation and make room, thereby allowing the external mechanism 22 to be axially disengaged. By setting the first V-shaped protrusion 216 and the second V-shaped protrusion 225 that interlock, a reliable anti-loosening structure is formed, effectively preventing the external mechanism 22 from loosening due to vibration or accidental pulling in the plugged-in state. The V-shaped bevel design not only provides guidance during the plugging process but also gives the connection a certain degree of self-locking performance. During disassembly, active pressure must be applied to overcome the elastic interlocking force, avoiding accidental separation caused by misoperation, thus improving the safety and stability of the connection.

[0036] Furthermore, as a preferred embodiment of this utility model and not a limitation, at least one slider 218 is provided on the side of the socket mechanism 21 that mates with the external mechanism 22. One end of the slider 218 has a chamfer, and one side of the external mechanism 22 has a slidable groove 222 that connects with the slider 218. The slidable groove 222 is slidably connected to the slider 218. The slider 218 is used to provide guidance and pre-positioning for the external mechanism 22 during insertion. When the external mechanism 22 is inserted into the socket mechanism 21, the chamfer of the slider 218 guides it to slide smoothly into the slidable groove 222, achieving axial sliding fit. This sliding connection structure guides and pre-positions the external mechanism 22 during insertion, ensuring that the plug end 223 and the socket end 211 are accurately aligned and smoothly inserted.

[0037] Furthermore, as a preferred embodiment of this utility model and not a limitation, the outer edge of the socket mechanism 21 is provided with a plurality of locking blocks 212. The connecting plate 211 is engaged with one end of the outer shell 1 through the locking blocks 212. The inner wall of the outer shell 1 is provided with a plurality of axially extending connecting grooves 14. The socket mechanism 21 is provided with corresponding connecting holes that match the positions of the connecting grooves 14. By inserting fasteners into the connecting holes and engaging with the connecting grooves 14, the socket mechanism 21 and the outer shell 1 can be fixedly connected. During assembly, the locking engagement of the locking blocks 212 with the outer shell 1 enables rapid pre-installation and alignment of the socket mechanism 21, improving assembly efficiency. Furthermore, by inserting the fasteners into the connecting holes and screwing them into the connecting grooves 14 and locking them, a firm fixation between the socket mechanism 21 and the outer shell 1 is achieved, ensuring that the socket mechanism 21 will not loosen or fall off during use.

[0038] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, the curtain mechanism 3 includes a support 33. A driving member 31 is mounted on one side of the support 33. The power output end of the driving member 31 is connected to a rotating shaft 34. A curtain 32 is wound around the outer circumference of the rotating shaft 34. The driving member 31 can drive the rotating shaft 34 to rotate, thereby realizing the winding and unfolding of the curtain 32. A positioning pin 35 is fixedly connected to the other side of the support 33. The connecting plate 211 has a clearance hole 215 that matches the positioning pin 35. During assembly, the positioning pin 35 is inserted into the corresponding clearance hole 215 on the socket mechanism 21 to achieve axial positioning and circumferential alignment between the support 33 and the socket mechanism 21.

[0039] Furthermore, as a preferred embodiment of this utility model and not a limitation, a guide block 213 is provided on one side of the socket mechanism 21, and a second inclined surface 214 is provided on one side of the guide block 213. The outer shell 1 includes a limiting strip 11, and an avoidance groove is provided on the limiting strip 11 for the curtain 32 to pass through. Both ends of the limiting strip 11 are provided with first inclined surfaces 111, which match the second inclined surface 214 on the guide block 213. When the socket mechanism 21 is installed into the outer shell 1, the second inclined surface 214 of the guide block 213 contacts and slides with the first inclined surface 111 at the end of the limiting strip 11. The inclined surface guides the connecting plate 211 to be smoothly inserted along the correct path, completing the alignment and installation.

[0040] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, the inner cavity of the outer shell 1 is provided with a guide plate 12. The guide plate 12 is located on the unfolding path of the curtain 32. The guide plate 12 is used to guide the curtain 32 during the winding and unfolding process. When the curtain 32 is unfolded or rolled up by the drive member 31 driving the rotating shaft 34 to rotate, the curtain 32 moves along the guiding direction of the guide plate 12 to ensure that the curtain 32 always remains aligned with the clearance groove of the limiting strip 11 during the movement, and smoothly extends or retracts through the clearance groove, avoiding deviation, jamming or friction damage.

[0041] Furthermore, as a preferred embodiment of this utility model and not a limitation, at least one LED strip groove 13 is provided on the surface of the housing 1. The LED strip groove 13 is arranged along the length direction of the housing 1 and is used to accommodate and position the LED strip. During installation, the LED strip is embedded in the LED strip groove 13, and the groove structure is used to fix the LED strip and hide the wiring. When the projection screen is unfolded or retracted, the LED strip is fixed in place with the housing 1 as a whole, and can provide ambient lighting or decorative lighting effects during use, enhancing the visual atmosphere.

[0042] Example 1:

[0043] This utility model proposes a screen insertion structure, including a housing 1, a screen mechanism 3 installed inside the housing 1, and a plug-in mechanism 2 installed at least one end of the housing 1. The plug-in mechanism 2 includes a socket mechanism 21 fixedly connected to the end of the housing 1 and an external mechanism 22 detachably connected to the socket mechanism 21. At least one connecting part 217 is provided on one side of the socket mechanism 21, and the external mechanism 22 is provided with a corresponding mating part 221 that cooperates with the connecting part 217. A plug end 223 is provided on one side of the external mechanism 22, and a socket end 211 electrically connected to the plug end 223 is provided on one side of the socket mechanism 21. During assembly, the external mechanism 22 is inserted after aligning its mating part 221 with the connecting part 217 on the socket mechanism 21 to achieve a mechanical connection. Specifically, the connecting part 217 and the mating part 221 cooperate with each other to stably attach the external mechanism 22 to the socket mechanism 21; simultaneously, the plug end 223 on one side of the external mechanism 22 contacts the socket end 211 on the socket mechanism 21 to achieve an electrical connection. The socket mechanism 21 is fixedly connected to the end of the housing 1. By providing a plug-in mechanism 2 at at least one end of the housing 1, the external mechanism 22 is detachably connected, solving the problems of limited functionality and poor expandability of traditional projection screens. The mating structure of the connecting part 217 and the docking part 221 facilitates quick installation and disassembly. The plug end 223 and the socket end 211 achieve electrical conductivity, avoiding the messy wiring caused by external devices. The overall structure enables plug-and-play functionality and flexible expansion of the modules. The socket mechanism 21 is made of either ABS plastic or PC plastic. ABS or PC plastic has good mechanical strength, toughness, and processing performance, meeting the assembly strength requirements of structural components, while also possessing a certain degree of elastic deformation capability, which is beneficial for the smooth assembly and long-term use of the snap-fit ​​and plug-in structures.

[0044] The connecting part 217 is a hook, and the mating part 221 is a hanging groove formed on the external mechanism 22. A hanging hole 2211 is formed at the top of the hanging groove, which matches the hook. The hanging hole 2211 provides space for the hook to engage when the external mechanism 22 is inserted into place. During insertion, the hanging groove aligns with the hook, and as insertion completes, the hook enters the hanging hole 2211 at the top of the hanging groove. The matching of the hanging hole 2211 and the hook achieves engagement after insertion, preventing the external mechanism 22 from disengaging from the hanging plate 213 in the radial direction, thus completing the locking of the mechanical connection. This ensures a good limiting effect after the connection is in place, preventing loosening due to vibration or external force during use. This structure is simple, easy to assemble, and improves the stability of the modular connection.

[0045] The socket mechanism 21 has a first V-shaped protrusion 216 with elasticity on one side, and the external mechanism 22 has a second V-shaped protrusion 225 that matches the first V-shaped protrusion 216. The second V-shaped protrusion 225 engages with the first V-shaped protrusion 216. When the external mechanism 22 is inserted into the socket mechanism 21, the first V-shaped protrusion 216 and the second V-shaped protrusion 225 move relative to each other axially, and their inclined surfaces come into contact and generate elastic deformation. As the insertion is complete, the elasticity recovers, causing the two protrusions to re-engage, achieving a tight connection. When it is necessary to remove the external mechanism 22, an external force is applied to make the first V-shaped protrusion 216 press against the second V-shaped protrusion 225, forcing the first V-shaped protrusion 216 to undergo elastic deformation and make room, thereby allowing the external mechanism 22 to be axially disengaged. By setting the first V-shaped protrusion 216 and the second V-shaped protrusion 225 that interlock, a reliable anti-loosening structure is formed, effectively preventing the external mechanism 22 from loosening due to vibration or accidental pulling in the plugged-in state. The V-shaped bevel design not only provides guidance during the plugging process but also gives the connection a certain degree of self-locking performance. During disassembly, active pressure must be applied to overcome the elastic interlocking force, avoiding accidental separation due to misoperation, thus improving the safety and stability of the connection. At least one slider 218 is provided on the side of the socket mechanism 21 that mates with the external mechanism 22. One end of the slider 218 has a chamfer, and one side of the external mechanism 22 has a slidable groove 222 that connects with the slider 218. The slidable groove 222 is slidably connected to the slider 218, and the slider 218 is used to provide guidance and pre-positioning for the external mechanism 22 during the plugging process. When the external mechanism 22 is inserted into the socket mechanism 21, the chamfer of the slider 218 guides it to slide smoothly into the slidable groove 222, achieving axial sliding fit. The sliding connection structure guides and pre-positions the external connection mechanism 22 during the insertion process, ensuring that the plug end 223 is accurately aligned with the socket end 211 and inserted smoothly.

[0046] The outer edge of the socket mechanism 21 is provided with several locking blocks 212. The connecting plate 211 is engaged with one end of the outer shell 1 through the locking blocks 212. The inner wall of the outer shell 1 is provided with several axially extending connecting grooves 14. The socket mechanism 21 is provided with corresponding connecting holes that match the positions of the connecting grooves 14. By inserting fasteners into the connecting holes and engaging with the connecting grooves 14, the socket mechanism 21 and the outer shell 1 can be fixedly connected. During assembly, the locking blocks 212 and the outer shell 1 engage to achieve quick pre-installation and alignment of the socket mechanism 21, improving assembly efficiency. Furthermore, the fasteners are inserted into the connecting holes, screwed into the connecting grooves 14 and locked, thereby achieving a firm fixation between the socket mechanism 21 and the outer shell 1, ensuring that the socket mechanism 21 will not loosen or fall off during use.

[0047] The curtain mechanism 3 includes a support 33. A drive component 31 is mounted on one side of the support 33. The power output end of the drive component 31 is connected to a rotating shaft 34. A curtain 32 is wound around the outer circumference of the rotating shaft 34. The drive component 31 can drive the rotating shaft 34 to rotate, thereby realizing the winding and unfolding of the curtain 32. A positioning pin 35 is fixedly connected to the other side of the support 33. The connecting plate 211 has a clearance hole 215 that matches the positioning pin 35. During assembly, the positioning pin 35 is inserted into the corresponding clearance hole 215 on the socket mechanism 21 to achieve axial positioning and circumferential alignment between the support 33 and the socket mechanism 21.

[0048] A guide block 213 is provided on one side of the socket mechanism 21, and a second inclined surface 214 is provided on one side of the guide block 213. The outer shell 1 includes a limiting strip 11, which has a clearance groove for the curtain 32 to pass through. Both ends of the limiting strip 11 are provided with a first inclined surface 111, which matches the second inclined surface 214 on the guide block 213. When the socket mechanism 21 is installed into the outer shell 1, the second inclined surface 214 of the guide block 213 and the first inclined surface 111 at the end of the limiting strip 11 come into contact with each other and slide together. Through the guiding effect of the inclined surface, the connecting plate 211 is smoothly inserted along the correct path, completing the alignment and installation.

[0049] The inner cavity of the outer shell 1 is provided with a guide plate 12. The guide plate 12 is located on the unfolding path of the curtain 32. The guide plate 12 is used to guide the curtain 32 during the winding and unfolding process. When the curtain 32 is unfolded or rolled up by the drive member 31 driving the rotating shaft 34 to rotate, the curtain 32 moves along the guiding direction of the guide plate 12 to ensure that the curtain 32 always stays aligned with the clearance groove of the limit strip 11 during the movement, and smoothly extends or retracts through the clearance groove, avoiding deviation, jamming or friction damage.

[0050] At least one LED strip groove 13 is provided on the surface of the housing 1. The LED strip groove 13 is arranged along the length of the housing 1 to accommodate and position the LED strip. During installation, the LED strip is embedded in the LED strip groove 13, and the groove structure is used to fix the LED strip and hide the wiring. When the projection screen is unfolded or retracted, the LED strip is fixed in place with the housing 1 as a whole, and can provide ambient lighting or decorative lighting effects during use to enhance the visual atmosphere.

[0051] Specifically, the working principle of this utility model is as follows:

[0052] When the screen insert structure is in operation, the external mechanism 22 and the socket mechanism 21 are first connected and assembled. The mating part 221 (i.e., the hanging groove) on the external mechanism 22 is aligned with the connecting part 217 (i.e., the hook) on the socket mechanism 21 and then inserted. When inserted in place, the hook engages with the hanging hole 2211 to achieve mechanical locking. Simultaneously, the plug end 223 on one side of the external mechanism 22 contacts and electrically connects with the socket end 211 on the socket mechanism 21, enabling power or signal conduction. During the insertion process, the slider 218 on the socket mechanism 21 guides the plug end 223 into the umbo groove 222 on the external mechanism 22 through its chamfer, providing guidance and pre-positioning to ensure accurate alignment of the plug end 223 and the socket end 211. At the same time, the first V-shaped protrusion 216 and the second V-shaped protrusion 225 move relative to each other axially, and the inclined surfaces contact to generate elastic deformation. After insertion, the elasticity returns and locks in place, forming an anti-loosening structure to prevent the external mechanism 22 from accidentally falling off due to vibration or pulling.

[0053] A drive unit 31 is provided on one side of the support 33. The power output end of the drive unit 31 is connected to the rotating shaft 34, which drives the rotating shaft 34 to rotate, thereby enabling the curtain 32 rolled on it to unfold or retract. The positioning pin 35 on the other side of the support 33 is inserted into the clearance hole 215 on the socket mechanism 21 to achieve axial positioning and circumferential alignment between the support 33 and the socket mechanism 21. When the curtain 32 moves, its unfolding path passes through the guide plate 12. The guide plate 12 is located in the inner cavity of the outer shell 1 and in the direction of curtain travel, which guides the curtain 32 to pass smoothly through the clearance groove on the limiting strip 11, avoiding deviation, jamming or friction damage. In addition, when installing the socket mechanism 21, the guide block 213 on it cooperates with the limiting strip 11 at the end of the outer shell 1. The second inclined surface 214 on the guide block 213 slides in contact with the first inclined surface 111 at the end of the limiting strip 11, which plays a guiding role and ensures that the socket mechanism 21 is installed into the outer shell 1 along the correct path.

[0054] The socket mechanism 21 is initially fixed to the end of the outer casing 1 by several locking blocks 212 set on its outer edge, and a secure connection is achieved by fasteners passing through the connecting holes of the socket mechanism 21 and locking it into the connecting groove 14 on the inner wall of the outer casing 1. The socket mechanism 21 is made of ABS plastic or PC plastic, which has good mechanical strength and elastic deformation ability, which is conducive to locking, plugging and unplugging and long-term use. In addition, the surface of the outer casing 1 has a light strip groove 13 extending along the length direction, which can be used to embed and install light strips to achieve concealed wiring and ambient lighting or decorative lighting effects.

[0055] In summary, this utility model solves the problems of existing projection screens having limited functionality, messy wiring for external devices, and difficulty in quickly replacing and flexibly expanding functional modules.

[0056] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., 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.

[0057] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A screen insert structure, comprising a housing (1), wherein a screen mechanism (3) is installed within the housing (1), characterized in that, At least one end of the outer casing (1) is equipped with a plug-in mechanism (2). The plug-in mechanism (2) includes a socket mechanism (21) fixedly connected to the end of the outer casing (1) and an external mechanism (22) detachably connected to the socket mechanism (21). At least one connecting part (217) is provided on one side of the socket mechanism (21). The external mechanism (22) is provided with a mating part (221) that cooperates with the connecting part (217). A plug end (223) is provided on one side of the external mechanism (22). A socket end (211) electrically connected to the plug end (223) is provided on one side of the socket mechanism (21).

2. The screen insert structure according to claim 1, characterized in that, The connecting part (217) is a hook, and the docking part (221) is a hanging groove opened on the external mechanism (22). The top of the hanging groove is provided with a hanging hole (2211). The hanging hole (2211) matches the hook. The hanging hole (2211) is used to provide space for the hook to be inserted when the external mechanism (22) is inserted into place.

3. The screen insert structure according to claim 1, characterized in that, The socket mechanism (21) has a first V-shaped protrusion (216) with elasticity on one side, and the external connection mechanism (22) has a second V-shaped protrusion (225) that matches the first V-shaped protrusion (216). The second V-shaped protrusion (225) engages with the first V-shaped protrusion (216).

4. The screen insert structure according to claim 1, characterized in that, At least one slider (218) is provided on the side of the socket mechanism (21) that is connected to the external mechanism (22). One end of the slider (218) is chamfered. One side of the external mechanism (22) is provided with a monocular groove (222) that is connected to the slider (218). The monocular groove (222) is slidably connected to the slider (218). The slider (218) is used to provide guidance and pre-positioning for the external mechanism (22) during the insertion process.

5. A screen insert structure according to claim 1, characterized in that, The outer edge of the socket mechanism (21) is provided with a plurality of locking blocks (212). The socket mechanism (21) is engaged with one end of the outer shell (1) through the locking blocks (212). The inner wall of the outer shell (1) is provided with a plurality of axially extending connecting grooves (14). The socket mechanism (21) is provided with corresponding connecting holes that match the positions of the connecting grooves (14). By inserting fasteners into the connecting holes and cooperating with the connecting grooves (14), the socket mechanism (21) and the outer shell (1) can be fixedly connected.

6. The screen insert structure according to claim 1, characterized in that, The curtain mechanism (3) includes a support (33), a drive member (31) is installed on one side of the support (33), a rotating shaft (34) is connected to the power output end of the drive member (31), a curtain (32) is wound around the outer periphery of the rotating shaft (34), a positioning pin (35) is fixedly connected to the other side of the support (33), and the socket mechanism (21) has a clearance hole (215) that matches the positioning pin (35).

7. A screen insert structure according to claim 6, characterized in that, A guide block (213) is provided on one side of the socket mechanism (21), and a second inclined surface (214) is provided on one side of the guide block (213). The outer shell (1) includes a limiting strip (11), and an avoidance groove is provided on the limiting strip (11) for the curtain (32) to pass through. Both ends of the limiting strip (11) are provided with a first inclined surface (111), and the first inclined surface (111) matches the second inclined surface (214) on the guide block (213).

8. A screen insert structure according to claim 6, characterized in that, The inner cavity of the outer shell (1) is provided with a guide plate (12), which is located on the unfolding path of the curtain (32) and is used to guide the curtain (32) during the winding and unfolding process.

9. A screen insert structure according to claim 1, characterized in that, The socket mechanism (21) is made of either ABS plastic or PC plastic.

10. A screen insert structure according to claim 1, characterized in that, At least one LED strip groove (13) is provided on the surface of the outer shell (1), and the LED strip groove (13) is arranged along the length direction of the outer shell (1).

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