Roll-up screen

Abstract

In the present invention, a single strip-shaped frame plate is installed behind each column of the display unit. The frame plate is fastened with buckles to ensure that each column of the display unit is flattened. By attaching buffer materials to the rear parts of both ends of the strip-shaped frame plate, when the screen is wound up, the light bulbs of the display unit are prevented from being crushed under the support action of the buffer materials. 【Solution means】The present invention has a reel support body that is connected to the ceiling via a frame or supported by a frame, a reel rotatably connected between the left and right side plates of the reel support body, a plurality of rows of display units connected to each other vertically, connected to the reel via a suspension steel wire, and wound up on the reel after being stored, and suspended under the reel via the suspension steel wire after being spread out. A screen, a drive assembly used to rotate the reel so that it is wound up on the reel after the screen is stored or suspended under the reel via the suspension steel wire after being spread out, and arranged on the back of each column of the display unit, and a plurality of sets of support and protection members used to protect the display unit when the screen is stored are provided. A winding-up type screen is disclosed.

Description

Technical Field

[0001] The present invention relates to the technical field of screen display, and particularly to a roll-up screen.

Background Art

[0002] In office spaces such as large shopping arcades or conference rooms, it is often necessary to use a large screen to demonstrate products or documents. If a fixed screen is directly installed, it will undoubtedly occupy a lot of indoor space. Therefore, some retractable screens have started to appear on the market. This retractable screen, for example, is a roll-up screen that spreads out when in use and retracts when not in use, so as to reduce the occupation of indoor space. The roll-up screen can achieve a simple and reliable storage method of winding a flexible screen around a reel by a winding method. In the process of winding and storing an existing roll-up screen, the light bulbs of the screen are easily damaged, which affects the display effect.

Summary of the Invention

Problems to be Solved by the Invention

[0003] In order to solve the technical problems in the above-mentioned prior art, the present invention proposes a roll-up screen.

Means for Solving the Problems

[0004] The technical solutions adopted by the present invention are as follows: A reel support body that is connected to the ceiling via a framework or supported by a framework, A reel rotatably connected between the left and right side plates of the reel support body, A screen having a plurality of rows of display units connected to each other vertically, connected to the reel via a suspension wire, and wound around the reel after being retracted, or suspended under the reel via the suspension wire after spreading out, A drive assembly mounted on the winding shaft support and connected to the winding shaft, and used to rotate the winding shaft so that the screen is either wound onto the winding shaft after it is housed inside, or unfolded and then suspended below the winding shaft via suspension wires, The objective is to provide a roll-up screen comprising a set of support and protective members arranged on the back of each row of the display unit and used to protect the display unit when the screen is retracted.

[0005] The support protection member comprises a strip-shaped frame plate positioned on the back of each row of the display unit, and support cushioning materials positioned at both ends of each strip-shaped frame plate and extending beyond the position of the display unit, wherein when the screen is installed, one support cushioning material supports the strip-shaped frame plate of the other support cushioning material, or supports the winding shaft.

[0006] Furthermore, a rubber strip is secured between two adjacent strip-shaped frame plates.

[0007] Furthermore, a suspension groove is provided along the axial direction on the inner wall of the winding shaft, the suspension groove is used to secure the suspension head of the suspension wire, and the suspension head is used to tie the suspension wire.

[0008] Furthermore, safety wires suspended from the winding shaft are provided on both sides of the back of the screen, so that the amount of deformation of the safety wires is less than the amount of deformation of the suspension wires.

[0009] Furthermore, a wiring groove is provided along the axial direction on the inner wall of the winding shaft, a plurality of wiring outlets leading to the wiring groove are provided on the outer surface of the winding shaft, and both sides of the winding shaft located at the wiring outlets are surrounded by rubber sleeves.

[0010] Specifically, the drive assembly has a motor attached to the right side plate of the winding shaft support and located at one end of the winding shaft, and the rotating shaft of the motor is inserted into the winding shaft and connected to the winding shaft.

[0011] Furthermore, the other end of the winding shaft support is attached to the left side plate of the winding shaft support, a bearing is provided on the left side plate, the inner ring of the bearing is fixedly connected to the left side plate, and the outer ring of the bearing is connected to the end of the winding shaft via a connecting member.

[0012] The present invention further includes a motor protection mechanism, The motor protection mechanism comprises a winding disc partition plate, a steering pulley base, a spring fixing member, and a counterweight steel wire. The winding disc partition plates are arranged at both ends of the outer ring of the bearing, and the outer ring of the bearing together with the two winding disc partition plates forms a winding disc. The aforementioned turning pulley base and the spring fixing member are mounted on the frame. The counterweight steel wire rotates via the turning pulley base, with one end of the counterweight steel wire connected to the winding shaft and the other end connected to the spring on the spring fixing member.

[0013] Side-facing pulleys are provided on both sides of the screen, and upright sliding rails corresponding to the side-facing pulleys are provided on the frame. [Effects of the Invention]

[0014] The present invention has the following beneficial technical effects compared to the prior art.

[0015] 1. A single strip-shaped frame is installed behind each row of the display unit, and the frame is secured with buckles to ensure that each row of the display unit is level. By attaching cushioning material to the rear ends of both ends of the strip-shaped frame, when the screen is rolled up, the light bulbs of the display unit are not crushed under the support of the cushioning material.

[0016] 2. By incorporating a motor protection mechanism, the counterweight spring continuously changes its tensile force according to the tension of the steel wire until it adequately compensates for the torque changes when the winding shaft winds up the screen. This allows the motor to always operate at a low load torque, reducing the load on the motor and allowing it to operate more smoothly.

[0017] 3. The screen is wound up through an arrangement in which a plurality of rubber sleeves surround the winding shaft at intervals, and the flat cable is positioned in the gap between the rubber sleeves, and the flat cable is also wound up in the gap between the rubber sleeves, so as not to crush and damage the flat cable.

[0018] 4. The screen is wound up through an arrangement in which safety steel wires are fixed to both sides of the screen, and the safety steel wires are wound around, and by making the deformation amount of the steel wires smaller than that of the connecting steel wires in the display unit of the screen, the force when the safety steel wires are wound around is borne, and the purpose of protecting the steel wires on the display unit is achieved.

[0019] 5. Two winding methods are provided to ensure that the winding shaft rotates normally and is not affected by the cable.

[0020] 6. Through an arrangement in which an upper and lower stroke position limiting switch is built into the motor, the user can adjust the stroke. In addition, most of the motor is inside the winding shaft, a tail bearing is attached to the tail of the motor, and when rotating through an arrangement in which the rotating shaft is inserted into the winding shaft and directly connected to the winding shaft, there is only a rotational force without a tangential force on the winding shaft.

Brief Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present application and the technical solutions of the prior art, the following briefly describes the drawings necessary for the description of the embodiments and the prior art. Obviously, the drawings described below are some embodiments of this utility model, but those skilled in the art may also obtain other drawings according to these drawings without exerting ordinary creative ability.

[0022] FIG. 1 is a schematic diagram of the three-dimensional structure in the embodiment of the present invention. FIG. 2 is a schematic diagram of the three-dimensional structure showing one side of a part of the display unit in the embodiment of the present invention. FIG. 3 is a schematic diagram of the three-dimensional structure showing the other side of a part of the display unit in the embodiment of the present invention. Figure 4 is an end view of the scroll in the embodiment of the present invention. Figure 5 is a schematic view of the motor protection structure in the embodiment of the present invention. Figure 6 is a schematic view of a part of the structure of the member of the right side plate in the embodiment of the present invention. Figure 7 is a schematic view of a part of the structure of the member of the left side plate in an embodiment of the present invention. Figure 8 is a schematic view of a part of the structure of the member of the left side plate in another embodiment of the present invention. Figure 9 is a structural view of the end face when the screen is wound in the embodiment of the present invention.

Embodiments for Carrying out the Invention

[0023] Next, in order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, we will describe the present invention in detail in connection with the drawings and embodiments. It should be understood that the specific embodiments described in this specification are only used to interpret the present invention without limiting the present invention.

[0024] Next, a detailed description will be given of the principle and structure of the present invention in connection with the drawings and embodiments.

[0025] In view of the fact that the screen and the motor of the existing winding screen are not sufficiently protected, the present invention proposes a winding screen that can protect the screen and the motor and improve the safety performance of the screen.

[0026] As shown in Figure 1-9, the retractable screen according to the present invention comprises a retractable shaft support 1, a frame 2, a retractable shaft 3, a screen 4, a drive assembly, and a support and protective member. The retractable shaft support 1 is supported by the frame 2, which is installed upright. The retractable shaft support 1 comprises a left plate 11 and a right plate 12, which face each other on both sides of the top of the frame 2 and are mounted with a gap between them. The retractable shaft 3 is rotatably connected between the left plate 11 and the right plate 12 of the retractable shaft support, and both ends of the retractable shaft 3 can rotate around its own axis through the left plate 11 and the right plate 12. The screen 4 comprises multiple rows of display units 41 connected to each other vertically, and two adjacent display units 41 are rotatably connected to each other. On the back of the screen 4, there are multiple horizontally spaced suspension wires 42, and each suspension wire 42 passes from top to bottom through a fixed reduction member (which is not shown in the diagram as it is obscured by the strip-shaped frame plate 61) located on the back of each display unit 41. The tops of the suspension wires 42 are connected to the winding shaft 3. When it is necessary to retract the screen 4, the drive assembly drives the winding shaft 3 to rotate in one direction, causing the suspension wires 42 to be wound onto the winding shaft 3, and simultaneously causing each row of display units 41 of the screen 4 to be wound onto the winding shaft 3 in conjunction. When it is necessary to expand the screen 4, the drive assembly moves the winding shaft 3 to rotate in the other direction, causing the screen 4 wound onto the winding shaft 3 to expand downwards, and then the screen 4 is suspended directly below the winding shaft 3 via the suspension wires 42. The winding shaft 3 is driven to rotate using a drive device located on the right side plate 12, so that the screen 4 either wraps around the winding shaft 3 or spreads out and is suspended below the winding shaft 3. Support and protective members are located on the back of each row of the display unit 41 and are used to protect the indicator lights of the display unit when the screen is installed, and at the same time to flatten the display unit horizontally.

[0027] As shown in Figures 2, 3, and 9, each set of support and protection members comprises a strip-shaped frame plate 61 and two support cushioning materials 62. By fitting the strip-shaped frame plate 61 laterally to the back of a row of display units 41, the display units 41 in the same row are kept flat, ensuring a reliable display effect. By making the length of the strip-shaped frame plate 61 greater than the length of the row of display units 41, both ends of the strip-shaped frame plate 61 extend beyond one level of the display units 41, and the two support cushioning materials 62 are installed on the back of both ends of the strip-shaped frame plate 61, respectively, allowing the height of the support cushioning materials 62 to be greater than the thickness of the display units 41. When the screen 4 is retracted and rolled up, the support cushioning material 62 on the back of the rows of strip-shaped frame plates 61 located at the top presses against the winding shaft 3, and the support cushioning material on the back of the remaining strip-shaped frame plates 61 braces against the front of the strip-shaped frame plates 61 located at both ends. This prevents the screen 4 from being compressed, protecting the light bulb on the back of the display unit 41 and improving the reliability of the roll-up screen.

[0028] In one configuration, the rubber strip 64 remains between two adjacent strip-shaped frame plates 61, thereby blocking the gap between it and the display unit 41 and preventing light transmission. Furthermore, the rubber strip 64 acts as a buffer when the screen 4 is rolled up, and in addition, it prevents the two vertically adjacent strip-shaped frame plates 61 from directly colliding and causing compressive deformation.

[0029] In one configuration, as shown in Figure 4, a suspension groove 31 is provided along the axial direction on the circumferential surface of the winding shaft 3. The suspension groove 31 is opened from one end face of the winding shaft 3 and continues to the other end of the winding shaft 3. The top end of the suspension wire 42 is connected to a rectangular suspension head. When installed, the suspension head slides into the inside of the suspension groove 31 from the end of the suspension groove 31, and the suspension wire 42 extends out of the notch in the suspension groove 31. This makes it possible to install the suspension heads of multiple vertically spaced suspension wires 42 into a single horizontal suspension groove 31.

[0030] In one operational configuration, as shown in Figure 2, two safety wires 43 are installed in front of the screen 4. The two safety wires 43 are positioned on both sides of the screen 4, and the top ends of the safety wires 43 are directly fixed to the winding shaft 3 (the safety wire on the left side of the figure is not shown). Fixing pressure members for the safety wires 43 are positioned in front of both ends of the strip-shaped frame plate 61, and when the winding shaft 4 is wound, the support cushioning material is pressed against the fixing pressure members of the safety wires 43. When the winding shaft 4 is wound and the safety wires 43 are wound at the same time, the amount of deformation of the safety wires 43 is smaller than the amount of deformation of the steel wires inside the display unit 41 of the screen 4. This achieves the purpose of protecting the steel wires on the display unit by bearing the force when the safety wires 43 are wound.

[0031] In one configuration, a wiring groove 32 is provided along the axial direction on the winding shaft 3, and multiple wiring outlets are provided on the outer surface of the winding shaft 3. These wiring outlets are used to connect the flat cable 94 of the screen 4 and lead it out from the wiring outlets. Furthermore, multiple rubber sleeves 33 surround the outer surface of the winding shaft 3, and the rubber sleeves 33 are located on both sides of the wiring outlets. When winding the screen 4, the flat cable connecting the screen 4 is wound between two rubber sleeves 33, preventing cable loss due to the screen crushing the cable.

[0032] In a specific embodiment, as shown in Figure 5-7, the winding shaft support 1 comprises a left plate 11 and a right plate 12. A drive assembly is mounted on the right plate 12, and the drive assembly connects to the right end of the winding shaft 3 to rotate the winding shaft 3. A bearing 71 is provided on the left plate 11, with the inner ring of the bearing fixed to the left plate 11, and the outer ring of the bearing fixed to the left end of the winding shaft 3 via a connecting member, thereby enabling the winding shaft 3 to rotatably connect between the left plate 11 and the right plate 12.

[0033] As shown in Figure 6, the drive assembly comprises a motor 51 and a transmission sleeve 52. The motor 51 is positioned on the right side plate 12, and the motor 51's rotating shaft 511 is located inside the winding shaft 3 and is coaxial with the winding shaft. The transmission sleeve 52 surrounds the outer surface of the rotating shaft 511, and a connecting key is placed between the rotating shaft 511 and the transmission sleeve 52 to allow the transmission sleeve 52 to rotate together with the rotating shaft 511. A female threaded connecting column 53 is provided vertically on the outer circumferential surface of the transmission sleeve 52, and a position limiting groove 34 is provided on the inner wall of the winding shaft 3 along the axial direction (Figure 4). When the motor 51 is installed, the female threaded connecting column 53 can slide along the limiting groove 34, and then the transmission sleeve 52 is fixedly connected to the winding shaft 3 by connecting to the female threaded connecting column 53 in the limiting groove 34 through a screw hole or through hole on the outer surface of the winding shaft 3 via a screw. A partially cylindrical tail portion of the motor 51 is also located inside the winding shaft 3, and a tail bearing 54 is attached to it. The outer ring of the tail bearing 54 may protect the rotating shaft of the motor 51 by ensuring that there is only rotational torque on the rotating shaft of the motor 51 without radial shear force, by being fixedly connected to the winding shaft 3 via a screw.

[0034] A vertical stroke position limiting switch, located on the part of the motor 51 that is outside the winding shaft 3, is used to adjust the position limiting stroke according to the screen length. The stroke position limiting switch is a type of switch in the prior art and is used to operate the motor to rotate forward, reverse, or stop.

[0035] As shown in Figure 7, a bearing 71 is provided on the left plate 11, with the inner ring of the bearing fixed to the left plate 11, and the outer ring of the bearing fixed to the left end of the winding shaft 3 via a connecting member, thereby enabling the winding shaft 3 to rotatably connect between the left plate 11 and the right plate 12. The connecting member is a claw 72, which is fixed to the side surface of the outer ring of the bearing. The four clamping parts of the claw 72 are perpendicular to the plane of the left plate 11 and, in addition, are inserted into the winding shaft 3 along the axial direction of the winding shaft 3 and press against the inner wall of the winding shaft 3. Then, the end of the winding shaft 3 is fixed to the claw by fastening the clamping parts of the claw 72 with screws. In other words, the end of the winding shaft 3 is fixedly connected to the outer ring of the bearing, enabling the winding shaft 3 to rotate normally.

[0036] As shown in Figure 6-7, the motor protection mechanism is further provided. The motor protection mechanism comprises a winding plate partition plate 81 spaced apart on the outer ring of the bearing (two winding plate partition plates 81 may be specifically attached to both sides of the outer ring of the bearing 71, i.e., the two winding plate partition plates 81 are arranged in an annular shape), a deflection pulley base 85 and a spring fixing member 83 mounted on the frame 2, and a spring 84 and a counterweight steel wire 82. The winding plate partition plate 81 and the outer ring of the bearing 71 are placed around each other to form a winding plate with a winding plate groove, and one end of the counterweight steel wire 82 is wrapped around the winding plate groove. Specifically, one end of the counterweight steel wire 82 is fixed to the claw 72 and enters the winding disc groove through a pre-made through hole in the winding disc partition plate 81, then extends out of the winding disc groove, passes through the pulley of the turning pulley base 85 and turns, and then connects to the spring 84 in the spring fixing member 83. After the screen 4 is retracted, the spring 84 is in a normal state, and when the screen 4 expands, the motor 51 rotates to move the winding shaft 3 into rotation, and then the winding shaft 3 moves the winding disc into rotation, so that the counterweight steel wire 82 is wound into the winding disc by the time the screen 4 is completely lowered, at which point the spring 84 is in an unfolded state. When it is necessary to retract the screen 4, the motor 51 rotates to move the winding shaft 3 into rotation, and the transfer steel wire is released from the winding disc in sync, so that the spring changes from a tensed state to a normal state. The spring continuously changes its tensile force according to the tension state of the counterweight steel wire until it adequately compensates for the torque changes when the winding shaft 3 winds up the screen 4. This allows the motor 51 to always operate with a low load torque, reducing the load on the motor 51 and allowing it to operate more smoothly.

[0037] In a specific example, the power lines are arranged according to the following two installation configurations.

[0038] As shown in Figure 7, in Embodiment 1, a power supply wire 91 wound inside the winding shaft 3 is positioned, and in addition, a round bar 92 inserted perpendicularly into the winding shaft 3 through a bearing is fixed to the left side plate 11. The wound power supply wire 91 is wound onto the round bar 92, and a hook disc 93 is provided at the other end of the round bar. The hook disc 93 is fixedly connected to the inner wall of the winding shaft 3, and a hole for the round bar 92 is provided in the center of the hook disc 93. The connection end of the power supply wire 91 is fixed to the outside of the left side plate 11 by passing through holes pre-provided in the bearing and the left side plate 11, and the other end of the power supply wire 91 is connected to a power supply panel located inside the winding shaft 3. The clamping portion of the hook disc 93 can rotate the vertical portion of the power supply wire when the winding shaft 3 rotates, thereby rotating the power supply wire. However, because the wound power supply wire can automatically expand and contract when the winding shaft 3 rotates, it does not affect the fixing of the connection end of the power supply wire located on the left side plate 11.

[0039] As shown in Figure 8, in Embodiment 1, a winding disc 101 is provided on the outer surface of the left side plate 11, and in addition, a round bar 92 passes through the center of the winding disc 101 and is fixedly connected to the winding disc 101. Furthermore, the round bar is inserted into the winding shaft 3 through the left side plate 11 and fixedly connected to a hook disc, and this hook disc is fixedly connected to the inner wall of the winding shaft 3. When the winding shaft 3 rotates, under the action of the connection by the round bar 92, the winding disc located on the outer surface of the left side plate 11 can be moved in rotation, so that the power line is drawn out from the winding shaft 3 along the round bar and fixed to the winding disc. A panel cover 104 that houses the winding disc is also provided on the outer surface of the left side plate 11, and an external wiring panel is placed inside the panel cover 104, with the end located in the center connected to the power line (the external wiring and the power line use substantially the same continuous cable). When the winding shaft 3 rotates, the external connection cable rotates and expands like a spring, preventing the cable from tearing during rotation.

[0040] As shown in Figures 1 and 2, in a specific embodiment, lateral pulleys 63 are arranged on both sides of the screen 4. Specifically, lateral pulleys 63 are provided on both sides of each display unit 41, and upright sliding rails corresponding to the lateral pulleys are provided on the frame 2. When deploying or retracting the screen 4, the lateral pulleys roll along the upright sliding rails, thereby improving the stability of the screen 4 during deployment and retraction.

[0041] It should be noted that the technical terms used herein are solely for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments of the present invention. For example, unless otherwise specified in the context, the singular form used herein is intended to include plural forms, and it should also be understood that when the technical terms “contain” and / or “include” are used herein, it indicates the presence of features, processes, operations, devices, assemblies and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangements of components and processes, formulas, and numerical values ​​described in these embodiments do not limit the scope of the present invention. Furthermore, for the sake of clarity, it should be understood that the sizes of the parts shown in the drawings are not based on actual proportional relationships. Detailed discussions of technologies, methods, and devices known to those skilled in the art may be omitted, but where appropriate, such technologies, methods, and devices should be considered part of the authorization specification. In all examples shown and discussed herein, all specific values ​​should be interpreted as illustrative rather than limiting. Therefore, other examples of exemplary embodiments may have different values. Similar reference numerals and letters indicate similar items in the following drawings; therefore, once an item is defined in one drawing, it is not necessary to discuss it further in subsequent drawings.

[0043] In the description of this invention, the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right," "lateral, vertical, vertical, horizontal," and "top, bottom" are generally directions or positional relationships shown based on the drawings. Their purpose is simply to facilitate and simplify the description of this invention. Conversely, unless otherwise stated, these directional words do not explicitly or implicitly indicate that the described device or element necessarily has a specific direction or is composed and operated in a specific direction, and should not be understood as limiting the scope of protection of this invention. It should also be understood that "inside" and "outside" in the directional words refer to the inside and outside relative to the contour of each component itself.

[0044] For ease of explanation, this specification may use spatial relative technical terms such as "above," "above," "on top of," or "on top of" to describe the spatial positional relationship between a device or feature shown in a figure and other devices or features. It should be understood that spatial relative technical terms are intended to include not only the orientation indicated in the figure but also different orientations in the use or operation of the device. For example, if the device in the drawing is placed in the opposite position, a device described as "above the other device or structure" or "on top of the other device or structure" would subsequently be positioned as "below the other device or structure" or "below the other device or structure." Thus, the exemplary technical term "above" can include two orientations: "above" and "below." This device may also be positioned in other different ways (by rotating it 90 degrees or positioning it in a different orientation), and the spatial relative descriptions used herein should be interpreted accordingly.

[0045] Furthermore, it should be explained that the purpose of using terms such as "first," "second," etc. to limit the parts is simply to make it easier to distinguish between corresponding parts, and unless otherwise specified, these terms have no special meaning and should not be understood as limiting the scope of protection of the present invention.

[0046] The foregoing describes only preferred embodiments of the present invention and does not limit them. Those skilled in the art may modify and adapt the present invention in various ways. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be within the scope of protection of the present invention. [Explanation of Symbols]

[0047] 1-Winding shaft support; 11-Left side plate; 12-Right side plate; 2-Frame; 3-Winding shaft; 31-Hanging groove; 32-Wiring groove; 33-Rubber sleeve; 34-Position limiting groove; 4-Screen; 41-Display unit; 42-Hanging steel wire; 43-Safety steel wire; 51-Motor; 52-Transmission sleeve; 53-Female threaded connection column; 54-Tail bearing; 511-Rotating shaft; 61-Strip frame plate; 62-Support cushioning material; 63-Lateral pulley; 64-Rubber strip; 71-Bearing; 72-Hook; 81-Winding plate partition plate; 82-Counterweight steel wire; 83-Spring fixing member; 84-Spring; 85-Turning pulley base; 91-Power line; 92-Round bar; 93-Hook disc; 94-Flat cable; 101-Winding disc; 104-Disc cover.

Claims

1. A winding shaft support that is connected to the ceiling via a frame, or supported by a frame, A winding shaft rotatably connected between the left and right plates of the winding shaft support, A screen having multiple rows of display units connected to each other vertically, connected to the winding shaft via suspension wires, being wound onto the winding shaft when stored, and suspended below the winding shaft via suspension wires when unfolded, A drive assembly is mounted on the winding shaft support, connected to the winding shaft, rotates the winding shaft, and either winds the screen onto the winding shaft and stores it, or spreads it out below the winding shaft and suspends it. The display unit comprises a set of support and protective members arranged on the back of each row of the display unit and used to protect the display unit when the screen is installed, The aforementioned support and protective member is A strip-shaped frame plate is positioned on the back of each row of the display unit, Each of the aforementioned strip-shaped frame plates is equipped with support cushioning material attached to both ends of the frame plate at positions that protrude outward from both ends of the display unit, When the screen is installed, the support cushioning material comes into contact with the strip-shaped frame plate and other strip-shaped frame plates or the winding shaft. A roll-up screen characterized by the following features.

2. The roll-up screen according to claim 1, characterized in that a rubber strip is secured between two adjacent strip-shaped frame plates.

3. A suspension groove is provided along the axial direction on the inner wall of the winding shaft, the suspension groove is used to secure the suspension head of the suspension wire, and the suspension head is used to tie the suspension wire. The roll-up screen according to feature 1.

4. Safety wires suspended on the winding shaft are further provided on both sides of the back of the screen, and the amount of deformation of the safety wires when the screen changes from the state before being wound onto the winding shaft to the state after being wound is smaller than the amount of deformation of the suspension wires when the screen changes from the state before being wound onto the winding shaft to the state after being wound. The roll-up screen according to feature 1.

5. A wiring groove is provided along the axial direction on the inner wall of the winding shaft, a plurality of wiring outlets leading to the wiring groove are provided on the outer surface of the winding shaft, and both sides of the winding shaft located at the wiring outlets are surrounded by rubber sleeves. The roll-up screen according to feature 1.

6. The drive assembly has a motor attached to the right side plate of the winding shaft support and located at one end of the winding shaft, and the rotating shaft of the motor is inserted into the winding shaft and connected to the winding shaft. The roll-up screen according to feature 1.

7. The other end of the winding shaft is mounted on the left side plate of the winding shaft support, a bearing is provided on the left side plate, the inner ring of the bearing is fixedly connected to the left side plate, and the outer ring of the bearing is connected to the end of the winding shaft via a connecting member. The roll-up screen according to feature 1.

8. It also features a motor protection mechanism, The motor protection mechanism comprises a winding disc partition plate, a steering pulley base, a spring fixing member, and a counterweight steel wire. The winding disc partition plates are arranged at both ends of the outer ring of the bearing, and the outer ring of the bearing together with the two winding disc partition plates forms a winding disc. The aforementioned turning pulley base and the spring fixing member are mounted on the frame. The counterweight steel wire rotates via the turning pulley base, one end of the counterweight steel wire is connected to the winding shaft, and the other end is connected to the spring on the spring fixing member. The roll-up screen according to feature 7.

9. Side-facing pulleys are provided on both sides of the screen, and upright sliding rails corresponding to the side-facing pulleys are provided on the frame. The roll-up screen according to feature 1.

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