A method and shading device for controlling the light transmittance of building shading

Abstract

This invention provides a method and device for controlling the light transmittance of building shading, relating to the field of automatic control technology. The control method includes the following steps: S1, installing a multi-layered shading device with adjustable light transmittance and indoor and outdoor light sensors; S2, setting an adjustment threshold corresponding to the light transmittance of each layer of shading curtain; S3, preset a start-up light value for activating the shading device; S4, real-time collection of the absolute value of the difference between indoor and outdoor light information as the light difference value; when the start-up light value is reached, proceed to step S5; if the start-up light value is not reached, the shading device is in standby mode; S5, adjusting the corresponding shading curtain according to the adjustment threshold corresponding to the light difference value for shading, or adjusting any combination of shading curtains for combined shading. This invention also discloses a shading device with adjustable light transmittance, which can adjust the operation of shading curtains with corresponding light transmittance or combine shading curtains with corresponding light transmittance according to usage requirements.

Description

Technical Field

[0001] This invention relates to the field of sunshade technology, and in particular to a method and device for controlling the light transmittance of building sunshades. Background Technology

[0002] In building energy consumption, energy loss through transparent enclosure structures such as doors, windows, and glass curtain walls can account for 30% to 50% of the total building energy consumption. There is great potential for energy-saving renovation of the transparent enclosure structures of existing buildings, especially high-energy-consuming public buildings. At present, the renovation of transparent enclosure structures needs to solve the following three core contradictions: (1) the contradiction between the need for heat insulation in summer (reducing solar energy entry) and the need for heat preservation in winter (increasing solar energy entry); (2) the contradiction between shading and heat insulation and visual transparency; (3) the renovation measures should minimize the impact on the indoor space and avoid interruption of the use function.

[0003] Based on the principles of low-intervention and economy, roller blinds have become the preferred choice. However, current roller blinds suffer from a limitation in practical applications: they offer only one type of light transmittance, making it impossible to adjust them according to user needs and impacting the user experience. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a method for regulating the light transmittance of building shading. This method automatically adjusts shading curtains with different light transmittances according to different usage needs. Furthermore, shading curtains with different light transmittances can be combined for use to improve user comfort. This invention also discloses a shading device for regulating the light transmittance of building shading.

[0005] The technical solution adopted in this invention is: A method for controlling the light transmittance of a building under shading conditions includes the following steps: S1. Install a shading device with adjustable light transmittance to the existing window, and install indoor and outdoor light sensors. The shading device has multiple layers of shading curtains with different light transmittance. S2. Set the corresponding adjustment threshold according to the light transmittance of each layer of sunshade curtain; S3, preset the activation light value for starting the sunshade device; S4. The absolute value of the difference between indoor and outdoor light information is collected in real time as the light difference value. When the light value is reached, the process proceeds to step S5. If the light value is not reached, the sunshade device is in standby mode. S5. Adjust the corresponding sunshade curtain according to the adjustment threshold corresponding to the light difference to provide sunshade, or adjust any sunshade curtain to provide combined sunshade.

[0006] Optionally, in step S1, the sunshade device is provided for the openable window and the non-openable window respectively.

[0007] Optionally, the method for controlling the building's shading transmittance also includes the following steps: S6. Install the clamping assembly to each individual window. When the sunshade is fully lowered, the corresponding openable window uses the clamping assembly to press the sunshade against the window frame, so that a relatively sealed area is formed between the sunshade and the window frame; the corresponding non-openable window uses the clamping assembly to press the sunshade against the glass, so that another relatively sealed area is formed between the sunshade and the glass.

[0008] To facilitate better implementation of the above-mentioned control method, the present invention also provides a shading device with adjustable light transmittance, the shading device comprising: Guide rail assembly, installed inside the window frame; Storage components are installed at the top of the window frame; The multi-layered sunshade curtain is rolled up separately and placed in the storage assembly after being rolled up. The bottom of the sunshade curtain extends into the guide rail assembly. The light transmittance of each layer of the sunshade curtain is different. After the multi-layered sunshade curtain is installed, its axis is in the same horizontal plane. A clamping component is installed on the opposite sidewall of the storage component; Sensing components; The controller is electrically connected to the storage component, the clamping component, and the sensing component.

[0009] Optionally, the guide rail assembly includes: Guide rails are installed on the left and right sides of the window frame, and guide rails are provided with guide grooves that match each layer of sunshade curtains; Side sliding rails are installed on the left and right sides of the window frame; Bottom sliding rail, installed at the bottom of the window frame; A position sensor is installed on one side of the bottom of the bottom slide rail, and the controller is electrically connected to the position sensor.

[0010] Optionally, the storage component includes: A storage box is installed at the top of the window frame, and the bottom of the storage box has an opening for the sunshade to extend out. A take-up roller is provided for each layer of the sunshade curtain. The sunshade curtain is rolled up onto the take-up roller. The controller is connected to the take-up roller. The transmission mechanism is connected to the multiple winding rollers; A drive motor is connected to the transmission mechanism, and the controller is electrically connected to the drive motor.

[0011] Optionally, the transmission mechanism includes: A transmission box is installed on one side of the storage box, and one end of the take-up roller extends into the transmission box; Mounting base, the mounting base is installed in the transmission box, the number of mounting bases is one less than the number of take-up rollers, and when the mounting base is installed, it is coaxially arranged with the take-up roller located in the middle; A drive gear is rotatably mounted on the mounting base, and a limit groove is provided on the inner ring of the drive gear; The driven gear is mounted on the take-up roller and meshes with the driving gear; A sliding assembly is installed at the end of the transmission box away from the take-up roller, and the drive motor is installed on the sliding assembly; A limiting block is installed on the rotating shaft of the drive motor, and the limiting block matches the limiting groove; An angle sensor is mounted on the limiting block; The controller is electrically connected to the sliding component and the angle sensor.

[0012] Optionally, the sliding component includes: A drive rail is installed at the end of the drive box away from the take-up roller; A sliding block is installed on the transmission slide rail, and the drive motor is installed on the sliding block. After the drive motor is installed, it is coaxially arranged with the drive gear and the intermediate take-up roller. A sliding mechanism is installed on the side of the transmission slide rail away from the transmission box. The sliding mechanism is connected to the sliding block, and the controller is electrically connected to the sliding mechanism.

[0013] Optionally, the clamping assembly includes: A rotating rod is rotatably mounted on the side wall of the guide rail assembly; A connecting rod, wherein multiple rotating rods are arranged along the axial direction of the rotating rod; A pressure rod is installed at the end of the connecting rod away from the rotating rod; A rotating motor is mounted on one side of the guide rail assembly. The rotating motor is connected to the rotating rod and electrically connected to the controller.

[0014] Optionally, the sensing component includes: A first light sensor is installed outside the window and is electrically connected to the controller; The second light sensor is installed indoors and electrically connected to the controller; A position sensor is mounted on the bottom side of the guide rail assembly, and the controller is electrically connected to the position sensor.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The sunshade curtains automatically adjust to provide shading based on real-time light information detected by the light sensor. During the shading process, multiple layers of sunshade curtains can be combined based on real-time light information, allowing users to adjust the light transmittance of the sunshade curtains according to their needs.

[0016] Using sunshades with different light transmittance for sun shading allows users to choose the appropriate light transmittance when lowering the sunshade or to choose a combination of multiple sunshades with different light transmittances to lower, thus improving user comfort.

[0017] Compared with existing sunshade and heat insulation roller blind products, it can effectively solve the problem that the light transmittance of existing sunshade and heat insulation roller blind products cannot be controlled.

[0018] By pressing the sunshade against the glass with a clamping rod, the problem of existing roller blinds not forming a closed space between them and the glass, and poor heat insulation effect, can be effectively solved. Attached Figure Description

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

[0020] Figure 1 A flowchart illustrating the method for controlling the light transmittance of a building through shading.

[0021] Figure 2 This is a schematic diagram of the installation structure of the sunshade device.

[0022] Figure 3 This is a schematic diagram of the structure of the sunshade device after the sunshade curtain has been lowered.

[0023] Figure 4 This is a cross-sectional structural diagram of the sunshade device.

[0024] Figure 5 This is a structural diagram of the storage components for a sunshade device.

[0025] Figure 6 This is a top view of the structure of the sunshade device.

[0026] Figure label: Guide rail assembly; 11. Guide rail; 12. Guide groove; 13. Side rail; 14. Bottom rail; 15. Brush sealing strip; Storage components; 21. Storage box; 22. Opening; 23. Take-up roller; 24. Transmission mechanism; 241. Transmission box; 242. Mounting base; 243. Drive gear; 244. Limiting groove; 245. Driven gear; 246. Sliding assembly; 2461. Transmission slide rail; 2462. Sliding block; 2463. Sliding mechanism; 247. Limiting block; 248. Angle sensor; 25. Drive motor; Sunshade curtains; 41. Clamping assembly; 42. Rotating rod; 43. Connecting rod; 44. Pressure rod; 45. Rotating motor; Sensing components; 51. First light sensor; 52. Second light sensor; 53. Position sensor; Controller. Detailed Implementation

[0027] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0028] In the description of this invention, it should be understood that the terms "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0033] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] like Figure 1 As shown, a method for controlling the light transmittance of a building through shading includes the following steps: S1. Install an adjustable light transmittance sunshade device at the existing window, and install indoor and outdoor light sensors. The sunshade device has multiple layers of sunshade curtains with different light transmittances. During the installation of the sunshade device, the sunshade device is set up for both openable and non-openable windows. In this embodiment, the sunshade device should have at least three layers of sunshade curtains with different light transmittances.

[0035] S2. Set the corresponding adjustment threshold according to the light transmittance of each layer of sunshade curtain. Taking a three-layer sunshade curtain as an example, the light transmittance of each layer is 50%, 20%, and 5%.

[0036] S3. Preset the activation light value for the sunshade device (set the corresponding illuminance according to the requirements of indoor illuminance: 300-500 Lux for indoor office environment, 1000-1500 Lux for indoor drafting room and design room, and 500-800 Lux for conference room.) S4. The absolute value of the difference between indoor and outdoor light information is collected in real time as the light difference value. When the light value is reached, the process proceeds to step S5. If the light value is not reached, the sunshade device is in standby mode.

[0037] S5. Adjust the corresponding sunshade curtain according to the adjustment threshold corresponding to the light difference to provide sunshade.

[0038] When the outdoor light information collected in real time reaches the starting light value, the system calculates the difference between indoor and outdoor light. The larger the difference between indoor and outdoor light, the more likely the sunshade curtain with lower light transmittance will work; the smaller the difference, the more likely the sunshade curtain with higher light transmittance will work.

[0039] When the real-time collected outdoor light information reaches the activation light value, and the outdoor light information is greater than the activation light value by 3000 Lux, the smaller the difference between indoor and outdoor light, the more the sunshade curtain with lower light transmittance will be controlled to work; if the difference is larger, the sunshade curtain with higher light transmittance will be controlled to work.

[0040] When the difference is greater than 5000 Lux, at least two layers of sunshade curtains will be activated based on the magnitude of the light difference to achieve a better sunshade effect.

[0041] For example, when the light difference is greater than 5000 Lux, controlling the operation of a 50% light transmittance shading curtain and a 20% light transmittance shading curtain can achieve better indoor light control.

[0042] When the light difference is greater than 6000 Lux, the sunshade curtains with a light transmittance of 50% and 5% are controlled to operate.

[0043] When the light difference is greater than 8000 Lux, the sunshade curtains with a light transmittance of 20% and 5% are controlled to operate.

[0044] When the light difference is greater than 10,000 Lux, the sunshade curtains with 50% light transmittance, 20% light transmittance, and 5% light transmittance are controlled to operate.

[0045] If the light changes during use, the corresponding sunshade curtain will be adjusted in real time to provide shading based on the starting light value and the adjustment threshold corresponding to the light difference.

[0046] It should be noted that users can adjust the working conditions of the sunshade according to their own needs during use.

[0047] When installing the sunshade curtain 3, install the sunshade curtain 3 with a light transmittance of 50%, the sunshade curtain 3 with a light transmittance of 20%, and the sunshade curtain 3 with a light transmittance of 5% from the end closest to the window to the end furthest from the window, and record their position information to facilitate the control of the corresponding sunshade curtain 3 to work.

[0048] When the installation position of the sunshade curtain 3 with different light transmittance changes, it is necessary to recalibrate its specific position information (i.e., determine its specific position).

[0049] In one embodiment, shading devices are provided for each window to facilitate individual control of each window, both for the operable and non-operable windows.

[0050] In one embodiment, such as Figure 1 As shown, the method for controlling the light transmittance of this building through shading also includes the following steps: S6. When the sunshade is fully lowered, the corresponding openable window will press the sunshade against the window frame, so that a relatively sealed area is formed between the sunshade and the window frame; the corresponding non-openable window will press the sunshade against the glass, so that another relatively sealed area is formed between the sunshade and the glass.

[0051] During use, to improve the heat insulation efficiency of the sunshade device, after the sunshade is lowered, it is pressed against the window frame by the pressing component 4 to form a relatively sealed area. Then, the sunshade is pressed against the glass by the pressing component 4 to form another relatively sealed area. These two relatively sealed areas can improve the heat insulation effect of the sunshade.

[0052] To better implement the above-mentioned control method, this invention also discloses a shading device with adjustable light transmittance. For example... Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the sunshade device includes: a guide rail assembly 1, a storage assembly 2, multiple layers of sunshade curtains 3, a clamping assembly 4, a sensing assembly 5, and a controller 6. The guide rail assembly 1 is installed inside the window frame. The storage assembly 2 is installed at the top of the window frame. The multiple layers of sunshade curtains 3 are installed inside the storage assembly 2, with the bottom of the curtains extending into the guide rail assembly 1; each layer of the curtains 3 has a different light transmittance. The clamping assembly 4 is installed on the opposite side wall of the storage assembly 2. The controller 6 is electrically connected to the storage assembly 2, the clamping assembly 4, and the sensing assembly 5.

[0053] During use, the sensor component 5 detects changes in light and feeds this information back to the controller 6. The controller 6 then controls the corresponding sunshade 3 to descend according to the user's needs (i.e., the sunshade 3 with the corresponding light transmittance). Once the sunshade 3 is in place, the sensor component 5 sends the information back to the controller 6, which then controls the pressing component 4 to press the sunshade 3 against the window frame or glass.

[0054] When it is necessary to adjust the sunshade 3 according to the light or to roll the sunshade 3 into the storage assembly 2, the controller 6 controls the clamping assembly 4 to separate from the sunshade 3. Then, the controller 6 controls the storage assembly 2 to roll up the lowered sunshade 3 into the rolling assembly. If the sunshade 3 is being replaced, after rolling up the lowered sunshade 3, the controller 6 controls the corresponding sunshade 3 to be lowered.

[0055] In one embodiment, such as Figure 4 and Figure 5 As shown, the sunshade curtain 3 comprises three layers; the light transmittance of the three layers is 40%-60%, 15%-30%, and 5%-10%, respectively. The optimal light transmittance of the sunshade curtain is 50%, 20%, and 5%.

[0056] In one embodiment, such as Figure 2 , Figure 3 and Figure 4 As shown, the guide rail assembly 1 includes: a guide rail 11, a side rail 13, and a bottom rail 14. The guide rail 11 is installed on the left and right sides of the window frame, and the guide rail 11 is provided with a guide groove 12 that matches each layer of sunshade 3. The side rail 13 is installed on the left and right sides of the window frame. The bottom rail 14 is installed at the bottom of the window frame.

[0057] After the sunshade curtain 3 is installed, one end of the sunshade curtain 3 is installed in the guide groove 12 of the guide rail 11. When it is necessary to lower the sunshade curtain 3, the controller 6 controls the movement of the storage component 2, and the sunshade curtain 3 is guided through the guide groove 12 of the guide rail 11, so that the sunshade curtain 3 smoothly enters the side rail 13. Then it descends along the side rail 13 into the bottom rail 14.

[0058] When the sunshade curtain 3 needs to be rolled up, the sunshade curtain 3 smoothly enters the corresponding guide groove 12 through the side slide rail 13 until it is rolled up into the storage component 2.

[0059] The guide rail 11, side rail 13, and bottom rail 14 are all made of fiber-reinforced composite pultruded profiles. This gives the guide rail 11, side rail 13, and bottom rail 14 the advantages of being lightweight, high-strength, highly corrosion-resistant, and having good thermal insulation properties.

[0060] In one embodiment, such as Figure 2 , Figure 3 and Figure 4As shown, the storage assembly 2 includes: a storage box 21, a winding roller 23, a transmission mechanism 24, and a drive motor 25. The storage box 21 is installed on the top of the window frame, and the bottom of the storage box 21 has an opening 22 for the sunshade 3 to extend out. A winding roller 23 is provided for each layer of sunshade 3, and the sunshade 3 is wound up onto the winding roller 23. The controller 6 is connected to the winding roller 23. The transmission mechanism 24 is connected to multiple winding rollers 23. The drive motor 25 is connected to the transmission mechanism 24, and the controller 6 is electrically connected to the drive motor 25.

[0061] In use, the controller 6 drives the drive motor 25 to move. The drive motor 25 is connected to the transmission mechanism 24. The transmission mechanism 24 drives the corresponding sunshade curtain 3 to move. The sunshade curtain 3 is lowered into the side slide rail 13 through the corresponding guide groove 12, and then smoothly enters the bottom slide rail 14 through the side slide rail 13.

[0062] It should be noted that each winding roller 23 in the storage box 21 has its own installation chamber, and the bottom of the storage box 21 has an opening 22 corresponding to each installation chamber. The sunshade 3 smoothly enters the guide rail 11 through the opening 22 and is then installed in the corresponding guide groove 12.

[0063] More specifically, such as Figure 4 and Figure 5 As shown, the transmission mechanism 24 includes: a transmission box 241, a mounting base 242, a drive gear 243, a driven gear 245, a sliding assembly 246, a limiting block 247, and an angle sensor 248. The transmission box 241 is mounted on one side of the storage box 21, and one end of the take-up roller 23 extends into the transmission box 241. The mounting base 242 is mounted inside the transmission box 241, and the number of mounting bases 242 is one less than the number of take-up rollers 23 (i.e., there are two mounting bases 242). When the mounting base 242 is installed, it is coaxially arranged with the take-up roller 23 located in the middle. The drive gear 243 is rotatably mounted on the mounting base 242, and a limiting groove 244 is provided on the inner ring of the drive gear 243. The driven gear 245 is mounted on the take-up roller 23 and meshes with the drive gear 243. The sliding assembly 246 is mounted on the end of the transmission box 241 away from the take-up roller 23, and the drive motor 25 is mounted on the sliding assembly 246. A limiting block 247 is mounted on the rotating shaft of the drive motor 25, and the limiting block 247 matches the limiting groove 244. Angle sensor 248 is mounted on the limiting block 247. The controller 6 is electrically connected to the sliding assembly 246 and the angle sensor 248.

[0064] When in use, the controller 6 drives the drive motor 25 to rotate. The limit block 247 set on the rotating shaft of the drive motor 25 is connected to the corresponding drive gear 243 or the winding roller 23. After connection, the sunshade curtain 3 is driven to roll up or lower.

[0065] It should be noted that three take-up rollers 23 are provided for the three-layer sunshade curtain 3.

[0066] For ease of description, the three layers of sunshade curtain 3 are named first sunshade roller blind, second sunshade roller blind and third sunshade roller blind respectively, and the three winding rollers 23 are named first winding rod, second winding rod and third winding rod respectively.

[0067] The first winding rod is positioned close to the window, while the second and third winding rods are positioned sequentially away from the window. Each of the first and third winding rods has a driven gear 245, and a mounting base 242 is provided corresponding to both. A drive gear 243 is rotatably mounted on the mounting base 242. The drive gear 243 is coaxially aligned with the second winding rod after installation. The end of the second winding rod has a connecting groove, and a limiting groove 244 is provided on the groove wall.

[0068] The two mounting bases 242 are defined as the first mounting base and the second mounting base. There is a gap between the first mounting base and the second mounting base, and there is also a gap between the second mounting base and the second winding rod to facilitate the adjustment of the angle by the drive motor 25.

[0069] The first sunshade roller blind is horizontally positioned in the limiting groove 244 corresponding to the drive gear 243, while the third sunshade roller blind is vertically positioned in the limiting groove 244 corresponding to the drive gear 243. The limiting groove 244 on the second winding rod has the same angle as the limiting groove 244 corresponding to the second sunshade roller blind.

[0070] For example, when the first sunshade roller blind is lowered or rolled up, the controller 6 controls the drive motor 25 to rotate. During the rotation of the drive motor 25, the angle sensor 248 provides real-time feedback on its rotation angle. After the rotation is completed, the controller 6 controls the sliding component 246 to move. The sliding component 246 drives the drive motor 25 to connect with the drive gear 243 installed on the first mounting base, and then drives the drive gear 243 to rotate. The drive gear 243 meshes with the driven gear 245 installed on the first winding rod, thereby driving the first sunshade roller blind to roll up or lower.

[0071] When lowering or retracting the second sunshade roller blind, the controller 6 controls the drive motor 25 to rotate, allowing the rotating shaft of the drive motor 25 to pass through the drive gear 243 mounted on the first mounting base. After the rotating shaft of the drive motor 25 passes through the drive gear 243, the controller 6 controls the drive motor 25 to rotate, causing the limiting block 247 on the rotating shaft of the drive motor 25 to correspond to the limiting groove 244 on the drive gear 243 on the second mounting base. The controller 6 then controls the sliding component 246 to move, causing the rotating shaft of the drive motor 25 to extend out of the drive gear 243. Finally, the sliding component 246 drives the drive motor 25 to continue translating, connecting the rotating shaft of the drive motor 25 to the second winding rod. During connection, the limiting block 247 on the rotating shaft of the drive motor 25 engages with the limiting groove 244 on the second winding rod. Then, the controller 6 controls the drive motor 25 to rotate, driving the second sunshade roller blind to retract or lower during rotation.

[0072] When lowering or retracting the third sunshade roller blind, the controller 6 controls the drive motor 25 to rotate, allowing the rotation shaft of the drive motor 25 to pass through the drive gear 243 mounted on the first mounting base. After the rotation shaft of the drive motor 25 passes through the drive gear 243, the controller 6 controls the drive motor 25 to rotate, causing the limiting block 247 on the rotation shaft of the drive motor 25 to correspond to the limiting groove 244 on the drive gear 243 on the second mounting base. Then, the controller 6 controls the sliding component 246 to drive the drive motor 25 to continue to move horizontally, connecting it with the drive gear 243 on the second mounting base. Finally, the controller 6 controls the drive motor 25 to rotate, during which the third sunshade roller blind is retracted or lowered.

[0073] When two layers of sunshade curtains 3 need to be lowered, the controller 6 controls the drive motor 25 to rotate. The rotating shaft of the drive motor 25 passes through the drive gear 243 mounted on the first mounting base. When the limiting block 247 on the rotating shaft of the drive motor 25 corresponds to the limiting groove 244 on the drive gear 243 on the first mounting base, the drive motor 25 is started to drive the first sunshade roller blind to move. After the first sunshade roller blind has moved to its position, the controller 6 controls the sliding component 246 to move, so that the rotating shaft of the drive motor 25 extends out of the drive gear 243 on the first mounting base. Then, the controller 6 controls the sliding component 246 to drive the drive motor 25 to continue to move horizontally, so that the rotating shaft of the drive motor 25 connects with the drive gear 243 or the second winding rod on the second mounting base. After connection, the drive motor 25 drives the drive gear 243 or the second winding rod on the second mounting base to rotate, lowering the second or third sunshade roller blind. In one embodiment, the sliding component 246 includes: a transmission slide rail 2461, a sliding block 2462, and a sliding mechanism 2463. The transmission slide rail 2461 is installed at the end of the transmission box 241 away from the take-up roller 23. A sliding block 2462 is installed on the transmission slide rail 2461, and a drive motor 25 is installed on the sliding block 2462. After installation, the drive motor 25 is coaxially arranged with the drive gear 243 and the intermediate take-up roller 23. A sliding mechanism 2463 is installed on the side of the transmission slide rail 2461 away from the transmission box 241. The sliding mechanism 2463 is connected to the sliding block 2462, and the controller 6 is electrically connected to the sliding mechanism 2463.

[0074] In use, the controller 6 controls the movement of the sliding mechanism 2463. The sliding mechanism 2463 drives the sliding block 2462 mounted on the transmission slide rail 2461 to move toward one end of the take-up roller 23, which in turn drives the drive motor 25 mounted on the sliding block 2462 to move, so that the rotation shaft of the drive motor 25 is connected to the drive gear 243 on the first mounting base 242. Then the drive motor 25 drives the drive gear 243 to rotate, and the drive gear 243 drives the sunshade 3 on the first take-up rod 23 to be rolled up or lowered.

[0075] It should be noted that the sliding mechanism 2463 is a cylinder, an electric telescopic rod, a linear motor, or other mechanism capable of linear reciprocating motion.

[0076] In one embodiment, such as Figure 4 As shown, brush sealing strips 15 are provided at the openings of the side slide rail 13 and the bottom slide rail 14. The brush sealing strips 15 have the functions of dust prevention and light leakage prevention.

[0077] In one embodiment, such as Figure 5As shown, the clamping assembly 4 includes: a rotating rod 41, a connecting rod 42, a pressure rod 43, and a rotating motor 44. The rotating rod 41 is rotatably mounted on the side wall of the guide rail assembly 1. Multiple rotating rods 41 are arranged along the axial direction of the rotating rod 41. The pressure rod 43 is mounted on the end of the connecting rod 42 away from the rotating rod 41. The rotating motor 44 is mounted on one side of the guide rail assembly 1, connected to the rotating rod 41, and electrically connected to the controller 6.

[0078] The pressing component 4 is designed to ensure that the sunshade 3 fits snugly against the glass or window frame, creating a relatively enclosed space between the sunshade 3 and the glass, thus improving the insulation effect. When using the pressing component 4, the sunshade 3 must be fully lowered, with its bottom contacting the bottom slide rail 14. Then, the controller 6 controls the rotating motor 44 to rotate, which in turn drives the rotating rod 41 to rotate, causing the pressure rod 43 connected to the rotating rod 41 to press the sunshade 3 against the glass or window frame.

[0079] It should be noted that there are four clamping components 4, which are located on the top, bottom, left, and right sides of the window after installation.

[0080] The four clamping components 4 can share a single rotary motor 44, and the four rotating rods 41 are connected by a reversing mechanism. This reversing mechanism is an existing design, and its specific structure and working principle will not be described in detail here.

[0081] In another embodiment, each clamping component 4 is provided with a separate rotating motor 44.

[0082] In one embodiment, such as Figure 5 As shown, the sensing component 5 includes a first light sensor 51, a second light sensor 52, and a position sensor 53. The first light sensor 51 is installed outside the window. The second light sensor is installed inside the window and is electrically connected to the controller 6. In use, multiple first light sensors 51 are installed on the outer wall outside the corresponding window, and the first light sensors 51 feed back the detected real-time light information to the controller 6. The second light sensor 52, installed inside the window, is used to detect indoor light information and is electrically connected to the controller 6. The position sensor 53 is installed on one side of the bottom of the guide rail assembly 1, and the controller 6 is electrically connected to the position sensor 53.

[0083] More specifically, the information detected by the first light sensor 51 includes the activation light value for starting the sunshade device, and then the corresponding light transmittance of the sunshade curtain is activated based on this activation light value and the indoor light value.

[0084] More specifically, when the sunshade device needs to be activated, the corresponding sunshade curtain is activated based on the activation light value and the adjustment threshold corresponding to the light difference value. During activation, the controller 6 controls the drive motor 25 to move, and the drive motor 25 rotates to cooperate with the sliding mechanism 2463, connecting the rotation shaft of the drive motor 25 to the drive gear 243 or the second winding rod. After connection, the controller 6 controls the drive motor 25 to rotate, lowering the sunshade curtain 3. Once the sunshade curtain 3 is lowered, the position sensor 53, located in the bottom slide rail 14, detects that the sunshade curtain 3 is in position and sends the information back to the controller 6. The controller 6 then controls the rotating motor 44 to move, causing the rotating rod 41 to rotate, bringing the pressure rod 43 mounted on the rotating rod 41 into contact with the sunshade curtain 3, thus pressing the sunshade curtain 3 down.

[0085] When the light changes, the sunshade curtain 3 needs to be replaced. The information is fed back to the controller 6. The controller 6 first controls the rotation motor 44 to move, so that the pressure rod 43 separates from the sunshade curtain 3. After the sunshade curtain 3 is rolled up, the controller 6 controls the drive motor 25 to move, and cooperates with the sliding mechanism 2463 to lower the other sunshade curtain 3.

[0086] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for regulating the light transmittance of a building sunshade, characterized in that, Includes the following steps: S1. Install a shading device with adjustable light transmittance to the existing window, and install indoor and outdoor light sensors. The shading device has multiple layers of shading curtains with different light transmittance. S2. Set the corresponding adjustment threshold according to the light transmittance of each layer of sunshade curtain; S3, preset the activation light value for starting the sunshade device; S4. The absolute value of the difference between indoor and outdoor light information is collected in real time as the light difference value. When the light value is reached, the process proceeds to step S5. If the light value is not reached, the sunshade device is in standby mode. S5. Adjust the corresponding sunshade curtain according to the adjustment threshold corresponding to the light difference to provide sunshade, or adjust any sunshade curtain to provide combined sunshade.

2. The method of claim 1, wherein the method is performed by a building management system. In step S1, the sunshade device is provided for the openable window and the non-openable window respectively.

3. The method of claim 2, wherein the method is performed by a building management system. It also includes the following steps: S6. Install the clamping assembly to each individual window. When the sunshade is fully lowered, the corresponding openable window uses the clamping assembly to press the sunshade against the window frame, so that a relatively sealed area is formed between the sunshade and the window frame; the corresponding non-openable window uses the clamping assembly to press the sunshade against the glass, so that another relatively sealed area is formed between the sunshade and the glass.

4. A shading device with adjustable light transmittance, characterized in that, include: Guide rail assembly, installed inside the window frame; Storage components are installed at the top of the window frame; The multi-layered sunshade curtain is rolled up separately and placed in the storage assembly after being rolled up. The bottom of the sunshade curtain extends into the guide rail assembly. The light transmittance of each layer of the sunshade curtain is different. After the multi-layered sunshade curtain is installed, its axis is in the same horizontal plane. A clamping component is installed on the opposite sidewall of the storage component; Sensing components; The controller is electrically connected to the storage component, the clamping component, and the sensing component.

5. The shading device with adjustable light transmittance according to claim 4, characterized in that, The guide rail assembly includes: Guide rails are installed on the left and right sides of the window frame, and guide rails are provided with guide grooves that match each layer of sunshade curtains; Side sliding rails are installed on the left and right sides of the window frame; Bottom sliding rail, installed at the bottom of the window frame.

6. The shading device with adjustable light transmittance according to claim 4 or 5, characterized in that, The storage component includes: A storage box is installed at the top of the window frame, and the bottom of the storage box has an opening for the sunshade to extend out. A take-up roller is provided for each layer of the sunshade curtain. The sunshade curtain is rolled up onto the take-up roller. The controller is connected to the take-up roller. The transmission mechanism is connected to the multiple winding rollers; A drive motor is connected to the transmission mechanism, and the controller is electrically connected to the drive motor.

7. The shading device with adjustable light transmittance according to claim 6, characterized in that, The transmission mechanism includes: A transmission box is installed on one side of the storage box, and one end of the take-up roller extends into the transmission box; Mounting base, the mounting base is installed in the transmission box, the number of mounting bases is one less than the number of take-up rollers, and when the mounting base is installed, it is coaxially arranged with the take-up roller located in the middle; A drive gear is rotatably mounted on the mounting base, and a limit groove is provided on the inner ring of the drive gear; The driven gear is mounted on the take-up roller and meshes with the driving gear; A sliding assembly is installed at the end of the transmission box away from the take-up roller, and the drive motor is installed on the sliding assembly; A limiting block is installed on the rotating shaft of the drive motor, and the limiting block matches the limiting groove; An angle sensor is mounted on the limiting block; The controller is electrically connected to the sliding component and the angle sensor.

8. The shading device with adjustable light transmittance according to claim 7, characterized in that, The sliding component includes: A drive rail is installed at the end of the drive box away from the take-up roller; A sliding block is installed on the transmission slide rail, and the drive motor is installed on the sliding block. After the drive motor is installed, it is coaxially arranged with the drive gear and the intermediate take-up roller. A sliding mechanism is installed on the side of the transmission slide rail away from the transmission box. The sliding mechanism is connected to the sliding block, and the controller is electrically connected to the sliding mechanism.

9. The shading device with adjustable light transmittance according to claim 4, characterized in that, The clamping assembly includes: A rotating rod is rotatably mounted on the side wall of the guide rail assembly; A connecting rod, wherein multiple rotating rods are arranged along the axial direction of the rotating rod; A pressure rod is installed at the end of the connecting rod away from the rotating rod; A rotating motor is mounted on one side of the guide rail assembly. The rotating motor is connected to the rotating rod and electrically connected to the controller.

10. The shading device with adjustable light transmittance according to claim 4, characterized in that, The sensing component includes: A first light sensor is installed outside the window and is electrically connected to the controller; The second light sensor is installed indoors and electrically connected to the controller; A position sensor is mounted on the bottom side of the guide rail assembly, and the controller is electrically connected to the position sensor.

Images