Curtain lifting mechanism and dynamic curtain system

Abstract

The utility model belongs to the technical field of projection curtains, and particularly relates to a curtain lifting mechanism which comprises an installation support, a winding roller arranged in the installation support and a motor driving the winding roller to rotate, a curtain is wound on the winding roller, and a balancing weight is arranged at the free end of the curtain. A horizontal curtain outlet for exposing the tail end of the curtain is formed in the mounting bracket, a guide frame is arranged outside the mounting bracket and below the curtain outlet, the guide frame is provided with a protruding part protruding out of the front end of the mounting bracket, and the protruding distance of the protruding part relative to the front end of the mounting bracket is at least larger than half of the thickness of the balancing weight; the large curtain is divided into a plurality of small curtains, and the small curtains are folded through the curtain lifting mechanism, so that the curtain is more convenient to install.

Description

Technical Field

[0001] This utility model belongs to the field of projection screen technology, specifically relating to a curtain lifting mechanism and a dynamic screen system. Background Technology

[0002] With the development of projection technology, its application in many fields is becoming increasingly widespread, such as conference presentations, education, and cinemas. The size of the screens is also getting larger, and the overall structural volume of the screens is correspondingly increasing.

[0003] Conventional roller blind screens can only be used for static demonstrations, resulting in a limited visual experience. They can only be used for performances on one side, and they are very troublesome to install and dismantle screens with particularly large surfaces. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a dynamic curtain system. By dividing a large curtain into several smaller curtains and using a curtain lifting mechanism to retract the smaller curtains, the installation of the curtain becomes more convenient, thus solving the problem of the great trouble involved in installing and disassembling curtains with particularly large surfaces.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a curtain lifting mechanism, including a mounting bracket, a winding roller disposed within the mounting bracket, and a motor for driving the winding roller to rotate. A curtain is wound on the winding roller, and a counterweight is provided at the free end of the curtain. The mounting bracket is provided with a horizontal curtain outlet for the end of the curtain to protrude. A guide frame is provided on the outside of the mounting bracket below the curtain outlet. The guide frame has a protrusion that protrudes from the front end of the mounting bracket, and the distance of the protrusion relative to the front end of the mounting bracket is at least greater than half the thickness of the counterweight.

[0006] Preferably, the mounting bracket has a first guide roller and a second guide roller arranged horizontally at intervals, and the gap between the first guide roller and the second guide roller constitutes the curtain outlet.

[0007] Preferably, both the first guide roller and the second guide roller have an outer cylinder capable of rotating relative to their axis.

[0008] Preferably, the guide frame is provided with a reinforcing plate flush with the front end of the mounting bracket below the protrusion, and a sensor for detecting the counterweight is installed on the reinforcing plate.

[0009] Preferably, the mounting bracket includes a left mounting plate, a right mounting plate, and a connecting profile connecting the left mounting plate and the right mounting plate. Both the upper and lower ends of the left mounting plate and the right mounting plate are provided with folded edges, and mounting holes are provided on the folded edges.

[0010] Preferably, the motor is mounted on the outside of the left or right mounting plate.

[0011] The dynamic curtain system includes a top frame and a main controller. The top frame is equipped with at least one row of curtain lifting mechanisms arranged at equal intervals.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The dynamic curtain system proposed by this utility model divides a large curtain into several small curtains, and the small curtains are gathered together by the curtain lifting mechanism, making the curtain installation more convenient.

[0013] The curtain lifting mechanism can independently raise and lower the curtain, making the visual effect of the curtain more varied.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] Figure 1 A schematic diagram of the three-dimensional structure of the dynamic screen system. Figure 1 .

[0016] Figure 2 A schematic diagram of the three-dimensional structure of the dynamic screen system. Figure 2 .

[0017] Figure 3 A three-dimensional structural diagram of the curtain lifting mechanism. Figure 1 .

[0018] Figure 4 This is a side view of the curtain lifting mechanism.

[0019] Figure 5 A three-dimensional structural diagram of the curtain lifting mechanism. Figure 2 .

[0020] Figure 6 A three-dimensional structural diagram of the curtain lifting mechanism. Figure 3 .

[0021] In the diagram: 1. Mounting bracket; 11. Left mounting plate; 12. Right mounting plate; 13. Connecting profile; 2. Motor; 3. Rewinding roller; 4. Curtain exit; 41. Outer cylinder; 5. Guide frame; 51. Protrusion; 52. Reinforcing plate; 6. Sensor; 7. Curtain; 8. Counterweight; 9. Top frame. Detailed Implementation

[0022] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0023] Combination Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the curtain lifting mechanism includes a mounting bracket 1, a take-up roller 3 disposed within the mounting bracket 1, and a motor 2 for driving the take-up roller 3 to rotate. A curtain 7 is wound on the take-up roller 3, and a counterweight 8 is provided at the free end of the curtain 7. The mounting bracket 1 is provided with a horizontal curtain outlet 4 for the end of the curtain 7 to protrude. A guide frame 5 is provided on the outside of the mounting bracket 1 below the curtain outlet 4. The guide frame 5 has a protrusion 51 protruding from the front end of the mounting bracket 1. The distance by which the protrusion 51 protrudes from the front end of the mounting bracket 1 is at least greater than half the thickness of the counterweight 8.

[0024] Specifically, the curtain lifting mechanism enables efficient and smooth raising and lowering of the curtain. First, there is a mounting bracket 1, which serves as the supporting foundation for the entire mechanism, ensuring the stability and reliability of all components. Inside the mounting bracket 1, there is a winding roller 3, which is the core component for rolling up and unfolding the curtain 7. The winding roller 3 ensures that the curtain 7 is tightly and evenly wound around it, preventing slackness or jamming during raising and lowering.

[0025] To drive the rotation of the take-up roller 3, the motor 2 is integrated into the mounting bracket 1. The motor 2 can precisely control the rotation speed and direction of the take-up roller 3, thereby achieving smooth raising and lowering of the curtain 7. The motor 2 can be driven by DC or AC, depending on the application requirements and power supply conditions.

[0026] The curtain 7 ensures both excellent light-blocking effect and durability during prolonged lifting and lowering operations. The free end of the curtain 7 is equipped with a counterweight 8, typically positioned in the middle of the counterweight 8. This helps maintain a stable speed and tension during descent, preventing swaying or deviation from the track due to wind or other external factors.

[0027] A horizontal curtain exit 4 is specially provided on the mounting bracket 1, which serves as the passage for the curtain 7 to enter and exit the mounting bracket 1. Outside the mounting bracket 1, below the curtain exit 4, a guide frame 5 is installed. The main function of the guide frame 5 is to guide the curtain 7 to maintain the correct trajectory during raising and lowering, preventing it from deviating from or scratching the mounting bracket 1. The guide frame 5 has a simple and practical structure, with the protrusion 51 protruding from the front end of the mounting bracket 1 being particularly important. When the curtain 7 descends to its lowest position, the counterweight 8 can pass smoothly without being jammed. The distance from the protrusion 51 relative to the front end of the mounting bracket 1 is at least greater than half the thickness of the counterweight 8, ensuring that the gap between the counterweight 8 and the guide frame 5 is large enough to guarantee smooth raising and lowering of the curtain 7 even if the gap decreases due to wear during long-term use.

[0028] The curtain lifting mechanism enables efficient and smooth lifting of the curtain 7, providing a high-quality shading solution for various application scenarios.

[0029] Combination Figure 3 , Figure 5 and Figure 6 As shown, the mounting bracket 1 is horizontally spaced with a first guide roller and a second guide roller, and the gap between the first guide roller and the second guide roller constitutes the curtain outlet 4.

[0030] Furthermore, a first guide roller and a second guide roller are specially provided on the mounting bracket 1. Both the first guide roller and the second guide roller are installed horizontally, and the gap between them is set to form the curtain exit 4. This not only ensures that the curtain 7 can move smoothly along the predetermined trajectory during the lifting and lowering process, but also ensures that the curtain 7 will not encounter excessive resistance when passing through the curtain exit 4, nor will it lose necessary support due to excessive gap.

[0031] The choice of materials for the first and second guide rollers is equally crucial. They are typically made of wear-resistant and corrosion-resistant polymer materials or metals to ensure long-term reliability and durability. Simultaneously, the surfaces of the guide rollers undergo special treatments, such as polishing or coating with a low-friction coefficient material, to further reduce the frictional resistance of the curtain 7 during sliding, thereby improving lifting efficiency.

[0032] Combination Figure 3 , Figure 5 and Figure 6 As shown, both the first guide roller and the second guide roller have an outer cylinder 41 that is capable of rotating relative to its axis.

[0033] Furthermore, the first and second guide rollers mounted on the mounting bracket 1 are crucial. They not only guide the curtain 7 to rise and fall smoothly, but also, through their unique design, ensure that the curtain 7 maintains optimal tension and sliding performance during the raising and lowering process.

[0034] Both the first and second guide rollers have an outer cylinder 41 capable of rotating relative to its axis. The outer cylinder 41 is typically made of wear-resistant and corrosion-resistant polymer materials or specially treated metals to ensure good lubricity and durability during long-term use. The inner wall of the outer cylinder 41 is connected to the axis of the guide rollers via bearings or a sliding structure, allowing the outer cylinder 41 to easily rotate on the axis of the guide rollers without experiencing excessive frictional resistance.

[0035] When the curtain 7 contacts the guide rollers during lifting, the outer cylinder 41 rotates, effectively dispersing the friction and pressure of the curtain 7 on the guide rollers. This not only reduces the wear and tear on the curtain 7 during lifting but also improves the smoothness and efficiency of the lifting process. Simultaneously, the rotation of the outer cylinder 41 helps reduce noise, making the entire curtain lifting mechanism quieter and smoother during operation.

[0036] In addition to its self-rotation function, the surface of the outer cylinder 41 undergoes special treatment, such as polishing or coating with a low-friction coefficient material. These treatments further reduce the coefficient of friction between the curtain 7 and the outer cylinder 41, allowing the curtain 7 to slide more smoothly during lifting and lowering. Simultaneously, these treatments also help prevent the curtain 7 from being scratched or worn by the surface of the outer cylinder 41 during lifting and lowering, thereby extending the service life of the curtain 7.

[0037] Combination Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the guide frame 5 is provided with a reinforcing plate 52 that is flush with the front end of the mounting bracket 1 below the protrusion 51. The reinforcing plate 52 is equipped with a sensor 6 for detecting the counterweight 8.

[0038] Furthermore, below the protrusion 51, the guide frame 5 is provided with a reinforcing plate 52 that is flush with the front end of the mounting bracket 1, which not only enhances the overall structural strength of the guide frame 5, but also provides a solid foundation for subsequent functional expansion.

[0039] The reinforcing plate 52 is typically made of high-strength, corrosion-resistant materials to ensure stable performance during long-term use. The reinforcing plate 52 is connected to the main structure of the guide frame 5 by welding or bolting, forming a robust whole that effectively improves the load-bearing capacity and deformation resistance of the guide frame 5.

[0040] A sensor 6 for detecting the counterweight 8 is installed on the reinforcing plate 52. The sensor 6 typically employs a high-precision, high-sensitivity photoelectric sensor or magnetic induction sensor, capable of accurately detecting the position and state of the counterweight 8. As the curtain 7 rises and falls, the counterweight 8 moves accordingly, and the sensor 6 can capture this change in real time and transmit the signal to the control system. Based on the signal provided by the sensor 6, the control system can precisely control the rising and falling process of the curtain 7. For example, when the sensor 6 detects that the counterweight 8 is about to reach a predetermined position, the control system can adjust the speed and torque of the motor 2 in advance to ensure that the curtain 7 can stop smoothly and accurately at the designated position.

[0041] The reinforcing plate 52 and the sensor 6 installed on the guide frame 5 not only enhance the structural strength and stability of the curtain lifting mechanism, but also realize precise control and intelligent management of the curtain 7 lifting process.

[0042] Combination Figure 3 , Figure 5 and Figure 6 As shown, the mounting bracket 1 includes a left mounting plate 11, a right mounting plate 12, and a connecting profile 13 connecting the left mounting plate 11 and the right mounting plate 12. The upper and lower ends of the left mounting plate 11 and the right mounting plate 12 are provided with folded edges, and mounting holes are provided on the folded edges.

[0043] Furthermore, the mounting bracket 1 mainly consists of a left mounting plate 11, a right mounting plate 12, and a connecting profile 13 connecting the two. These three parts together form a sturdy and stable frame, providing reliable support for the curtain lifting mechanism. The left mounting plate 11 and the right mounting plate 12, as the main load-bearing components, are typically made of high-strength, corrosion-resistant steel or aluminum alloy to ensure stable performance during long-term use.

[0044] To enhance the structural strength of the mounting bracket 1, folded edges are designed at both the top and bottom ends of the left mounting plate 11 and the right mounting plate 12. These folded edges not only increase the thickness and rigidity of the mounting plates but also provide more mounting points and fixing methods. The design of the folded edges takes into account both ease of installation and sturdiness, enabling the mounting bracket 1 to easily adapt to various installation environments and conditions.

[0045] Multiple mounting holes are provided on the folded edge. These holes are used not only to secure the mounting bracket 1 to a wall or other supporting structure, but also to mount the motor 2, the winding roller 3, and other auxiliary components. The position and number of mounting holes have been calculated and laid out to ensure that the entire curtain lifting mechanism remains balanced and stable during installation. Furthermore, the size and shape of the mounting holes have been optimized to facilitate installation using various standard installation tools and fasteners.

[0046] The mounting bracket 1, through the design of the left mounting plate 11, the right mounting plate 12, and the connecting profile 13, forms a sturdy and stable frame. The design of the folded edge and mounting holes not only enhances the structural strength of the mounting bracket 1, but also provides it with more mounting points and fixing methods, enabling the entire curtain lifting mechanism to maintain balance and stability during installation and use.

[0047] Combination Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the motor 2 is mounted on the outside of the left mounting plate 11 or the right mounting plate 12.

[0048] Specifically, the installation position of motor 2 is usually determined based on the overall layout of mounting bracket 1 and the lifting direction of curtain 7. If curtain 7 is lifted from left to right, motor 2 may be installed on the outside of the left mounting plate 11 to drive the lifting of curtain 7 by rotating the take-up roller 3. Conversely, if curtain 7 is lifted from right to left, motor 2 may be installed on the outside of the right mounting plate 12. This design allows the driving force of motor 2 to act directly on the take-up roller 3, thereby improving lifting efficiency.

[0049] During installation, motor 2 is typically secured to the outside of the left mounting plate 11 or right mounting plate 12 using bolts or other reliable connection methods. To ensure the stability and safety of motor 2, vibration damping pads or shock absorbers are usually used during installation to reduce vibration and noise during motor operation. Simultaneously, the power and control cables of motor 2 are carefully arranged and secured to prevent interference or damage during lifting.

[0050] Combination Figure 1 and Figure 2 As shown, the dynamic curtain system includes a top frame 9 and a main controller. The top frame 9 is equipped with at least one row of curtain lifting mechanisms arranged at equal intervals.

[0051] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A curtain lifting mechanism, comprising a mounting bracket (1), a winding roller (3) disposed within the mounting bracket (1), and a motor (2) for driving the winding roller (3) to rotate, wherein a curtain (7) is wound on the winding roller (3), and a counterweight (8) is provided at the free end of the curtain (7), characterized in that, The mounting bracket (1) is provided with a horizontal curtain outlet (4) for the end of the curtain (7) to be exposed. A guide frame (5) is provided on the outside of the mounting bracket (1) below the curtain outlet (4). The guide frame (5) has a protrusion (51) that protrudes from the front end of the mounting bracket (1). The distance from the protrusion (51) to the front end of the mounting bracket (1) is at least greater than half the thickness of the counterweight (8).

2. The curtain lifting mechanism according to claim 1, characterized in that, The mounting bracket (1) is horizontally spaced with a first guide roller and a second guide roller, and the gap between the first guide roller and the second guide roller constitutes the curtain outlet (4).

3. The curtain lifting mechanism according to claim 2, characterized in that, Both the first and second guide rollers have an outer cylinder (41) capable of rotating relative to their axis.

4. The curtain lifting mechanism according to claim 1, characterized in that, The guide frame (5) is provided with a reinforcing plate (52) flush with the front end of the mounting bracket (1) below the protrusion (51), and a sensor (6) for detecting the counterweight (8) is installed on the reinforcing plate (52).

5. The curtain lifting mechanism according to any one of claims 1-4, characterized in that, The mounting bracket (1) includes a left mounting plate (11), a right mounting plate (12), and a connecting profile (13) connecting the left mounting plate (11) and the right mounting plate (12). The upper and lower ends of the left mounting plate (11) and the right mounting plate (12) are provided with folded edges, and mounting holes are provided on the folded edges.

6. The curtain lifting mechanism according to claim 5, characterized in that, The motor (2) is mounted on the outside of the left mounting plate (11) or the right mounting plate (12).

7. A dynamic curtain system, comprising a top frame (9) and a main controller, characterized in that, The top frame (9) is provided with at least one row of curtain lifting mechanisms as described in any one of claims 1-6, which are arranged at equal intervals.

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