Electric curtain

Abstract

The invention discloses an electric curtain. The electric curtain comprises a curtain; the mounting box and the counterweight box are oppositely arranged at two ends of the curtain; the mounting box comprises a shell, a power supply position and a mounting seat; a reel is accommodated in the shell, and the mounting box is longer than the curtain in the axis direction of the reel; one end of the curtain is wound on the reel, and the reel is used for winding / unwinding the curtain; a slender rod is arranged in the counterweight box, and the slender rod is connected with the curtain; the slender rod is longer than the curtain in the axis direction of the slender rod; counterweight structures are arranged below the edges of the two ends of the slender rod respectively, and in the axis direction of the slender rod, in the length direction, each counterweight structure does not exceed one half of the slender rod. And in terms of weight, the weight of each counterweight structure is 1 / 4 to 2 / 5 of the weight of the curtain. After the electric curtain is unfolded, the edge is flat, the influence of flowing air on the curtain is reduced, and the visual experience of viewers is ensured.

Description

[0001] This application relates to the field of projection display, and particularly to an electric screen. Background Art

[0002] With the expansion of the application scenarios of the screen, people's requirements for the form of the screen are becoming more and more diverse. The electric screen emerges as the times require.

[0003] The existing electric screen is prone to bending at the edges after being unfolded, resulting in a certain degree of bending. In addition, after the electric screen is unfolded, the screen is easily affected by the flowing air and flutters with the wind, greatly reducing the visual experience of the viewer. Summary of the Invention

[0004] The purpose of this application is to provide an electric screen, which solves the problems that after the existing electric screen is unfolded, the edges are bent to a certain extent and the screen is affected by the flowing air and flutters with the wind, so that the edges of the electric screen are flat after being unfolded, the influence of the flowing air on the screen is reduced, and the visual experience of the viewer is ensured.

[0005] The technical solution provided by this application is as follows:

[0006] An electric screen, comprising:

[0007] A screen;

[0008] Mounting boxes and counterweight boxes oppositely arranged at both ends of the screen;

[0009] The mounting box includes a housing, a power position and a mounting seat; a reel is accommodated inside the housing. In the axial direction of the reel, the mounting box is longer than the screen; one end of the screen is wound around the reel, and the reel is used for winding / unwinding the screen;

[0010] A thin rod is arranged inside the counterweight box, and the thin rod is connected to the screen; in the axial direction of the thin rod, the thin rod is longer than the screen;

[0011] Counterweight structures are respectively arranged below the edges at both ends of the thin rod. In the axial direction of the thin rod, the length of a single counterweight structure does not exceed one-half of the total length of the thin rod; the weight of a single counterweight structure is between one-fourth and two-fifths of the total weight of the screen.

[0012] In this application, through the settings of the mounting box, the reel, the counterweight box and the screen, a complete electric screen is formed to realize the winding / unwinding of the electric screen. The thin rod limits the edges of the screen. In the axial direction of the thin rod, the length of a single counterweight structure does not exceed one-half of the total length of the thin rod, and the mass of a single counterweight structure is set between one-fourth and two-fifths of the overall mass of the screen, which not only ensures the hanging stability of the screen, but also avoids the deformation problem caused by local overweight.

[0013] In one embodiment, a clamping strip is provided in the counterweight box, and the clamping strip is arranged in the direction of the thin rod close to the curtain; in the axial direction of the thin rod, the clamping strip is longer than the curtain.

[0014] In an embodiment of the present application, the designs of the thin rod and the clamping strip cooperate to limit the edge of the curtain.

[0015] In one embodiment, when the film is completely wound up, the mounting box and the counterweight box fit and match.

[0016] In an embodiment of the present application, the mounting box and the counterweight box can fit and match when the film is completely wound up, ensuring the aesthetics of the entire electric curtain after winding.

[0017] In one embodiment, the curtain sequentially includes a first connection section, a film sheet, and a second connection section, and the film sheet is used for imaging and displaying; the first connection section is connected to the reel; the second connection section is connected to the thin rod.

[0018] In an embodiment of the present application, the curtain includes a first connection section, a film sheet, and a second connection section, and the area where the film sheet is located controls the imaging and displaying area. The first connection section serves as the connection part between the film sheet and the reel, and the second connection section serves as the connection part between the film sheet and the thin rod. In this way, when the curtain is connected to the reel and the thin rod, the imaging and displaying area is not damaged, ensuring the stability of the imaging and displaying area.

[0019] In one embodiment, the edge of the second connection section is folded to form a hollow cavity, and the thin rod is placed therein.

[0020] In an embodiment of the present application, the edge of the second connection section is folded to form a hollow cavity. In this way, a continuous accommodating space is constructed by the overlapping of the edges of the second connection section, and the thin rod can directly penetrate the cavity to limit and fix the edge of the second connection section, thereby limiting the edge of the film sheet and realizing the stable combination of the curtain and the counterweight box.

[0021] In one embodiment, a reserved groove is opened along the length direction on the edge of the reel, and the reserved groove is an asymmetric opening structure, and the first edge and the second edge of the groove opening of the reserved groove are not on the same horizontal level.

[0022] In an embodiment of the present application, a reserved groove with an asymmetric opening structure is provided in the length direction of the edge of the reel. The first edge and the second edge of the notch of the reserved groove are not on the same horizontal level. With such a setting, the outer edge of the reel is a circular arc with a gradually changing diameter. In this way, when the screen is wound around the outer periphery of the reel, indentations are avoided, and the flatness of the screen after the electric screen is unfolded is ensured.

[0023] In one embodiment, a limiting rod is provided in the reserved groove. The diameter of the limiting rod is greater than the opening distance of the reserved groove, and the limiting rod is connected to the edge of the screen.

[0024] In an embodiment of the present application, a limiting rod is provided in the reserved groove, and the limiting rod is connected to the edge of the screen. In this way, the limiting rod limits and fixes the edge of the screen; the diameter of the limiting rod is set to be greater than the opening distance of the reserved groove to prevent the limiting rod from falling out of the reserved groove, ensuring the stability of the limiting and fixing of the screen by the reel, and realizing the stable connection between the installation box and the curtain.

[0025] In one embodiment, the curtain sequentially includes a first connecting section, a film sheet, and a second connecting section. The film sheet is used for imaging and displaying; the first connecting section is connected to the limiting rod; the second connecting section is connected to the thin rod.

[0026] In an embodiment of the present application, the curtain includes a first connecting section, a film sheet, and a second connecting section. The area where the film sheet is located controls the imaging and displaying area. The first connecting section serves as the connecting part between the film sheet and the limiting rod, and the second connecting section serves as the connecting part between the film sheet and the thin rod. With such a setting, when the curtain is connected to the connecting rod and the reel, the imaging and displaying area is prevented from being damaged, and the stability of the imaging and displaying area is ensured.

[0027] In one embodiment, the edge of the first connecting section is folded to form a hollow cavity, and the limiting rod is placed therein; the edge of the second connecting section is folded to form a hollow cavity, and the thin rod is placed therein.

[0028] In an embodiment of the present application, the edge of the first connecting section is folded to form a hollow cavity. In this way, a continuous accommodating space is constructed by the overlapping of the edges of the first connecting section, and the limiting rod directly penetrates the cavity to limit and fix the edge of the first connecting section; the edge of the second connecting section is folded to form a hollow cavity. In this way, a continuous accommodating space is constructed by the overlapping of the edges of the second connecting section, and the thin rod can directly penetrate the cavity to limit and fix the edge of the second connecting section; by limiting the opposite two edges of the screen, the stable combination of the curtain and the installation box and the counterweight box is realized, ensuring the stability of the electric screen.

[0029] In one embodiment, the first connecting section is sutured to the diaphragm, and the second connecting section is sutured to the diaphragm.

[0030] In an embodiment of the present application, the first connecting section and the second connecting section are respectively connected to the diaphragm by suturing, so as to prevent the connection between the first connecting section, the second connecting section and the diaphragm from falling off, and strengthen the connection stability between the diaphragm and the first connecting section and the second connecting section.

[0031] In one embodiment, a hollow structure is provided inside the reel.

[0032] In an embodiment of the present application, a hollow structure is provided inside the reel, which can reduce the weight of the reel while ensuring the structural strength, thereby reducing the overall weight of the electric screen and reducing the transportation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a front view of the electric screen;

[0034] Figure 2 is a bottom view of the electric screen;

[0035] Figure 3 is a side view of the electric screen;

[0036] Figure 4 position Figure 3 is a partial enlarged view of A in;

[0037] Figure 5 is a schematic diagram of the interior of the electric screen after being retracted;

[0038] Figure 6 is a schematic diagram of the reel;

[0039] Figure 7 is an exploded view of the electric screen after being unfolded;

[0040] Figure 8 is another front view of the electric screen;

[0041] Among them, the meanings of the reference numerals in the drawings are as follows:

[0042] 100 - mounting box; 110 - housing; 120 - power supply position; 130 - mounting seat; 140 - bolt; 200 - curtain; 300 - counterweight box; 400 - first connecting section; 500 - second connecting section; 600 - thin rod; 700 - reel; 710 - reel body; 720 - reserved groove; 730 - first edge of the notch; 740 - second edge of the notch; 750 - first hollow structure; 760 - second hollow structure; 800 - clamping strip; 900 - limiting rod; 1000 - counterweight structure. Detailed implementation manners

[0043] The terms used in the implementation manners part of this application are only for explaining the specific embodiments of this application, rather than aiming to limit this application.

[0044] Refer to Figures 1 to 8 , an electric screen, including a screen 200, a mounting box 100, and a counterweight box 300. The mounting box 100 and the counterweight box 300 are oppositely arranged at both ends of the screen 200.

[0045] The mounting box 100 includes a housing 110, a power supply position 120, and a mounting seat 130; a reel 700 is accommodated inside the housing 110. In the axial direction of the reel 700, the length of the mounting box 100 is set to be greater than the length of the screen 200. In this way, when winding, the screen 200 can be completely wound inside the mounting box 100 to ensure the aesthetics after winding; one end of the screen 200 is wound on the reel 700. When it is necessary to wind / unwind, the power supply position 120 is energized to control the movement of the reel 700. In this way, by controlling the reel 700 through an electrical signal, the winding / unwinding of the screen 200 is realized.

[0046] A thin rod 600 is arranged inside the counterweight box 300. The thin rod 600 is connected to the screen 200 to limit the edge of the screen 200; in the axial direction of the thin rod 600, the thin rod 600 is longer than the screen 200. In this way, the thin rod 600 receives force along the entire length of the edge of the screen 200 to ensure the uniformity of the force.

[0047] In the axial direction of the thin rod 600, the length of a single counterweight structure 1000 is limited to not exceed one-half of the total length of the thin rod 600, and the mass of a single counterweight structure 1000 is controlled to be between one-fourth and two-fifths of the total mass of the screen 200. In this way, while ensuring that the screen 200 obtains sufficient draping force, the stress concentration phenomenon caused by excessive local mass is avoided, effectively preventing the edge of the screen 200 from deforming; through the limitation of the length and mass of the counterweight structure 1000, when the screen 200 is wound and unwound, the screen 200 will not flutter due to the too-light counterweight structure 1000, nor will it increase the force for driving the movement of the reel 700 due to the too-heavy counterweight structure 1000, enhancing the stability of the entire electric screen.

[0048] The setting of the housing 110 of the mounting box 100 avoids the exposure of the reel 700 to the outside, plays a certain protective role for the reel 700, ensures the stability of the reel 700 and extends the service life of the reel 700; when winding, the screen 200 is received into the mounting box 100, and the housing 110 acts as a protective cover to protect the screen 200 and extend the service life of the screen 200.

[0049] The setting of the power supply position 120 optimizes the power supply management and operation safety of the electric screen, facilitates the connection between the electric screen and the external power supply, ensures that the electric screen is in a low-power standby state for a long time, can respond to the commands of retracting / extending the screen at any time, and avoids wear caused by frequent plugging and unplugging of the power supply. When it is not needed for a long time, power-off protection can also be implemented.

[0050] The use of the mounting base 130 facilitates the fixing of the electric screen at the required position. When fixing specifically, bolts 140 can be directly used for fixing.

[0051] In the embodiment of the present application, when the screen sheet 200 is completely retracted, the mounting box 100 and the counterweight box 300 fit and match. In this way, after the screen cloth 200 is completely retracted, it is beneficial to store the screen sheet 200 in the mounting box 100, effectively utilizing the accommodation space of the mounting box 100; the mounting box 100 and the counterweight box 300 can act as protective covers to protect the screen cloth 200; when the mounting box 100 and the counterweight box 300 fit and match, the aesthetics of the entire electric screen after retraction is ensured.

[0052] Flatness and stability test of the electric screen in the embodiment of the present application

[0053] 1. Items

[0054] Item 1: The electric screen in the embodiment of the present application, wherein the length of the counterweight structure is one-half of the total length of the thin rod, and the weight of the counterweight structure is 40% of the total weight of the screen cloth;

[0055] Item 2: The electric screen in the embodiment of the present application, wherein the length of the counterweight structure is one-third of the total length of the thin rod, and the weight of the counterweight structure is 30% of the total weight of the screen cloth;

[0056] Item 3: The electric screen in the embodiment of the present application, wherein the length of the counterweight structure is one-fourth of the total length of the thin rod, and the weight of the counterweight structure is 35% of the total weight of the screen cloth;

[0057] Item 4: The electric screen in the embodiment of the present application, wherein the length of the counterweight structure is one-fifth of the total length of the thin rod, and the weight of the counterweight structure is 25% of the total weight of the screen cloth;

[0058] Item 5: The electric screen in the embodiment of the present application, however, the length of the counterweight structure is one-third of the total length of the thin rod, and the weight of the counterweight structure is 45% of the total weight of the screen cloth;

[0059] Item 6: The electric screen in the embodiment of the present application, however, the length of the counterweight structure is one-third of the total length of the thin rod, and the weight of the counterweight structure is 20% of the total weight of the screen cloth;

[0060] Item 7: Compared with Items 1 to 6, there is no counterweight structure.

[0061] 2. Test method

[0062] The articles 1 - 7 are respectively wound and unwound 100 times, 500 times, 1000 times, 2000 times, and 5000 times. Completing the entire winding and unwinding process is recorded as 1 time. Observe whether the edges of articles 1 - 7 are bent and whether the curtain sways.

[0063] 3. Test Record Table

[0064]

[0065] It can be seen from the above record table that when the counterweight structure 1000 is too heavy, for example, exceeding 40% of the overall mass of the curtain 200, it will cause local overweight, resulting in excessive local pulling force on the curtain 200, leading to wrinkles and bending of the curtain; when the counterweight structure 1000 is too light, for example, less than 25% of the overall mass of the curtain 200, it will cause the curtain 200 to flutter. Therefore, in the embodiments of the present application, it is defined that the length of a single counterweight structure 1000 does not exceed one - half of the total length of the thin rod 600, and the mass of a single counterweight structure 1000 is between one - fourth and two - fifths of the overall mass of the curtain 200, which is beneficial to ensuring the stability of the electric curtain after repeated use. The edges of the entire curtain 200 are not easily bent, and the hanging stability of the curtain 200 is good.

[0066] In the embodiment of the present application, a clamping strip 800 is arranged in the counterweight box 300, and the clamping strip 800 is arranged in the direction of the thin rod 600 close to the curtain 200; in the axial direction of the thin rod 600, the clamping strip 800 is longer than the curtain 200. In this way, in the axial direction of the thin rod 600, the thin rod 600 and the clamping strip 800 cooperate with each other to jointly limit and constrain the edge of the curtain 200, ensuring that the edge of the curtain 200 is uniformly stressed along its entire length, thereby improving the flatness and stability of the curtain when it is unfolded.

[0067] In the embodiment of the present application, the thin rod 600 and the clamping strip 800 can adopt a fitting design, so that the edge of the curtain 200 always maintains close contact during the winding and unwinding processes, avoiding local stress concentration, and enhancing the reliability and durability of the entire electric curtain.

[0068] In an embodiment of the present application, the curtain 200 sequentially includes a first connection segment 400, a diaphragm area (not marked in the figure), and a second connection segment 500. The first connection segment 400 is connected to the reel 700, and the second connection segment 500 is connected to the thin rod 600. The diaphragm area has an imaging and display function, and the first connection segment 400 and the second connection segment 500 may not have an imaging and display function. In this way, the control of the imaging and display area can be completed through the area where the diaphragm is located. The first connection segment 400 serves as the connection part between the diaphragm area and the reel 700, and the second connection segment 500 serves as the connection part between the diaphragm area and the thin rod 600. In this way, when the curtain 200 is connected to the reel 700 and the thin rod 600, the damage to the imaging and display area is avoided, thereby ensuring the imaging effect and stability of the imaging and display area.

[0069] In an embodiment of the present application, the edge of the second connection segment 500 is folded to form a hollow cavity. The overlapping of the edges of the second connection segment 500 is used to construct a continuous accommodation space. The thin rod 600 passes through the inside of the cavity to limit and fix the edge of the second connection segment 500, thereby realizing the limitation of the edge of the curtain sheet 200 and achieving the stable combination of the curtain 200 and the counterweight box 300. Specifically, it can be like this: perform equidistant hemming treatment along the edge of the second connection segment 500, and sew and fix the hem through sewing to form a hollow cavity penetrating the edge of the curtain sheet 200; subsequently, insert the thin rod 600 into the hollow cavity so that it extends along the axial direction of the cavity, and finally form a composite structure in which the edge of the curtain 200 wraps the thin rod. The composite structure formed in this way not only strengthens the stiffness of the edge of the curtain 200 but also realizes the concealed fixation of the thin rod.

[0070] In an embodiment of the present application, the reel 700 includes a reel main body 710. A reserved groove 720 with an asymmetric opening structure can be opened along the length direction on the edge of the reel main body 710. The first edge 730 and the second edge 740 of the opening of the reserved groove 720 are not in the same horizontal position, that is, the vertical distances from the first edge 730 and the second edge 740 of the opening to the bottom of the reserved groove 720 are different. With such a setting, the outer edge of the reel main body 710 can be a circular arc with a gradually changing diameter, thereby avoiding the generation of indentations when the curtain sheet 200 is wound around the outer circumference of the reel main body 710 and ensuring the flatness of the curtain sheet 200 after the electric curtain is unfolded.

[0071] In an embodiment of the present application, a limiting rod 900 is arranged in the reserved groove 720, and the limiting rod 900 is connected to the edge of the curtain 200. In this way, the limiting rod 900 limits and fixes the curtain 200; the diameter of the limiting rod 900 is set to be larger than the opening distance of the reserved groove 720. In this way, the limiting rod 900 is prevented from falling off from the reserved groove 720, ensuring the stability of the reel 700 for limiting and fixing the curtain 200 and realizing the stable connection between the mounting box 100 and the curtain 200.

[0072] As a further description, the curtain 200 successively includes a first connection section 400, a diaphragm area (not marked in the figure), and a second connection section 500. The first connection section 400 is connected to the limit rod 900, and the second connection section 500 is connected to the thin rod 600. The diaphragm has an imaging and display function, and the first connection section 400 and the second connection section 500 may not have an imaging and display function. In this way, the control of the imaging and display area can be achieved through the area where the diaphragm is located. According to the requirements for the imaging area of the electric curtain, the first connection section 400 and the second connection section 500 are set; through the maximum vertical distance between the first connection section 400 and the installation box 100, the highest point of the imaging and display area can be controlled; through the maximum vertical distance between the diaphragm and the installation box 100, the lowest point of the imaging and display area can be controlled. The first connection section 400 serves as the connection part between the diaphragm and the limit rod 900, and the second connection section 500 serves as the connection part between the diaphragm and the thin rod 600, avoiding damage to the imaging and display area of the diaphragm and ensuring the imaging effect and stability of the imaging and display area.

[0073] Since there are no requirements for the imaging and display function for the first connection section 400 and the second connection section 500, low-cost substrate materials can be used, thereby reducing the cost of the curtain 200 and further reducing the overall cost of the electric curtain.

[0074] The above-mentioned substrate material can be a polyethylene terephthalate (PET) substrate, or a polyvinyl chloride (PVC) soft film, or a non-woven composite layer (polypropylene PP + polyester fiber), or a glass fiber reinforced polypropylene.

[0075] In the embodiment of the present application, glass fiber reinforced polypropylene is selected as the substrate material. The curtain 200 can be formed in the following way: first, the first connection section 400 and the second connection section 500 are planned, and the diaphragm is bonded to the area between the first connection section 400 and the second connection section 500 to form a diaphragm area, and then the complete curtain 200 is formed. Here, the substrate under the diaphragm plays a certain supporting role for the diaphragm. The curtain 200 can also be formed in the following way: first, the first connection section 400 and the second connection section 500 are planned, and a material with imaging and display functions is coated in the area between the first connection section 400 and the second connection section 500 to act as the diaphragm, forming the complete curtain 200. The curtain 200 can also be formed in the following way: the sizes of the first connection section 400, the diaphragm, and the second connection section 500 are planned, the diaphragm is slightly larger than the required imaging area, and the first connection section 400, the diaphragm, and the second connection section 500 are spliced in sequence to form the complete curtain 200.

[0076] As a further description, the edge of the first connecting section 400 is folded to form a hollow cavity. In this way, a continuous accommodating space is constructed by overlapping the edges of the first connecting section 400. The limiting rod 900 directly penetrates inside the cavity to limit and fix the edge of the first connecting section 400. The edge of the second connecting section 500 is folded to form a hollow cavity. In this way, a continuous accommodating space is constructed by overlapping the edges of the second connecting section 500. The thin rod 600 directly penetrates inside the cavity to limit and fix the edge of the second connecting section 500. The limiting of the edge of the screen sheet 200 is realized by the limiting rod 900, and the limiting of the opposite edge of the screen sheet 200 is realized by the thin rod 600, so as to realize the stable combination of the screen 200 with the installation box 100 and the counterweight box 300 and ensure the stability of the electric screen. The edge folding and fixing method of the first connecting section 400 and the second connecting section 500 can refer to the foregoing description and will not be elaborated here.

[0077] As a further description, the first connecting section 400 and the membrane sheet, and the second connecting section 500 and the membrane sheet can be sewn together. In this way, the connection between the first connecting section 400, the second connecting section 500 and the membrane sheet is prevented from falling off, the connection stability between the membrane sheet and the first connecting section 400 and the second connecting section 500 is strengthened, the stability of the screen 200 during the winding / unwinding process is ensured, and thus the stability of the entire electric screen is strengthened.

[0078] As a further description, a hollow structure can be provided inside the reel 700. In this way, on the basis of ensuring the structural strength, the weight of the reel 700 is reduced, thereby reducing the overall weight of the electric screen and the transportation cost. Specifically, a first hollow structure 750 can be opened at the central position inside the reel body 710, and the extending direction of the first hollow structure 750 is consistent with the axial direction of the reel body. On this basis, a second hollow structure 760 can be further opened inside the reel body 710. Similarly, the extending direction of the second hollow structure 760 is consistent with the axial direction of the reel body.

[0079] The foregoing are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electric screen, characterized in that, Comprising: A curtain; Mounting boxes and counterweight boxes oppositely arranged at both ends of the curtain; The mounting box includes a housing, a power position and a mounting seat; a reel is accommodated inside the housing, in the axial direction of the reel, the mounting box is longer than the curtain; one end of the curtain is wound around the reel, and the reel is used for winding / unwinding the curtain; A thin rod is arranged in the counterweight box, and the thin rod is connected to the curtain; in the axial direction of the thin rod, the thin rod is longer than the curtain; counterweight structures are respectively arranged below the two ends of the thin rod, and in the axial direction of the thin rod, the length of a single counterweight structure does not exceed one-half of the total length of the thin rod; the weight of a single counterweight structure is between one-fourth and two-fifths of the total weight of the curtain.

2. The electric screen according to claim 1, wherein A clamping strip is arranged in the counterweight box, and the clamping strip is arranged in the direction of the thin rod close to the curtain; in the axial direction of the thin rod, the clamping strip is longer than the curtain.

3. The electric screen according to claim 1, wherein, When the curtain is completely wound up, the mounting box and the counterweight box fit and match.

4. The electric screen according to claim 1, wherein The curtain sequentially includes a first connection section, a film sheet and a second connection section, and the film sheet is used for imaging and display; the first connection section is connected to the reel; the second connection section is connected to the thin rod.

5. The electric screen according to claim 4, wherein The edge of the second connection section is folded to form a hollow cavity, and the thin rod is placed therein.

6. The electric screen according to claim 1, wherein A reserved groove is opened along the length direction at the edge of the reel, the reserved groove is an asymmetric opening structure, and the first edge and the second edge of the groove opening of the reserved groove are not in the same horizontal position.

7. The electric screen according to claim 6, characterized in that, A limiting rod is arranged in the reserved groove, the diameter of the limiting rod is larger than the opening distance of the reserved groove, and the limiting rod is connected to the edge of the curtain.

8. The electric screen according to claim 7, wherein The curtain sequentially includes a first connection section, a film sheet and a second connection section, and the film sheet is used for imaging and display; the first connection section is connected to the limiting rod; the second connection section is connected to the thin rod.

9. The electric screen according to claim 8, wherein The edge of the first connection section is folded to form a hollow cavity, and the limiting rod is placed therein; The edge of the second connection section is folded to form a hollow cavity, and the thin rod is placed therein.

10. The electric screen according to claim 8, characterized in that, The first connection section is sewn and connected to the film sheet, and the second connection section is sewn and connected to the film sheet.

Images