Single-motor steerable roller shutter

Abstract

The invention relates to the related technical field of fireproof roller shutters, in particular to a single-motor steerable roller shutter which comprises a support plate, a variable-diameter shaft assembly is arranged on the surface of one side of the support plate, a lifting assembly is arranged on the surface of the inner side of a support, and an arc-shaped transmission assembly is arranged at one end of a middle shaft. A tail shaft assembly is arranged at one end of the other middle shaft. According to the single-motor steerable roller shutter, through the arrangement of the arc-shaped transmission assembly, flexible direction conversion and transmission angle conversion of the arc-shaped transmission assembly are achieved through the unique structure of a cross shaft, the arc-shaped movement requirement is met, and the transmission stability and reliability are further improved through the arrangement of an outer package and a stretching block; the curtain cloth is protected, the vibration influence is reduced, the arc-shaped design of the whole device can be perfectly matched with an arc-shaped building structure, the fireproof function is guaranteed, and meanwhile the attractiveness and the space utilization rate of a building are improved.

Description

Technical Field

[0001] The invention relates to the technical field related to fireproof rolling shutters, and is mainly used for large and irregular spaces in shopping mall atriums or museum-type projects, and in particular relates to a single-motor steerable rolling shutter. Background Art

[0002] Fireproof rolling shutter is a facility used for fire partition. It is a curtain that can be automatically lowered, usually made of fire-resistant materials, used to block fire and smoke when a fire occurs, thereby protecting other parts of the building from damage. It is usually installed at the openings of the building, such as doors, windows, corridors, etc. The main functions of fireproof rolling shutters include fire separation, smoke separation, safe evacuation, etc. Under the development trend of diversified modern buildings, curved building structures are becoming more and more common. However, traditional fireproof rolling shutters are mostly designed as straight lines. Therefore, a single-motor steerable rolling shutter is particularly needed.

[0003] However, the existing linear fire shutters are difficult to perfectly fit the curved building contour when in use. Forced installation not only destroys the overall aesthetics of the building, but also forms a difficult-to-seal gap between the shutters and the building structure, weakening the fire and smoke prevention effects. In addition, the space is 200mm-300mm smaller than the traditional shutters. The traditional shutters require more than 400mm-800mm of installation space, while this shutter only requires 180mm-200mm of installation space. The traditional shutters require a large installation space and are not convenient to install in an environment with limited space. Summary of the invention

[0004] The purpose of the new invention is to provide a single-motor steerable roller shutter to solve the problem of the existing fireproof roller shutter proposed in the above-mentioned background technology. When in use, the linear fireproof roller shutter is difficult to perfectly fit the curved building contour. Forced installation not only destroys the overall aesthetics of the building, but also forms a difficult-to-seal gap between the roller shutter and the building structure, weakening the fire and smoke prevention effects. In addition, the space is 200mm-300mm smaller than the traditional roller shutter. The traditional roller shutter requires more than 400mm-800mm of installation space, while this roller shutter only requires 180mm-200mm of installation space. The traditional roller shutter has a large installation space requirement and is not convenient to install in an environment with limited space.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a single-motor steerable roller blind, comprising a bracket plate, a bracket is fixedly connected to one side surface of the bracket plate, a motor is fixedly connected to one side surface of the bracket plate, a variable diameter shaft assembly is arranged on one side surface of the bracket plate, a middle shaft is arranged on one side surface of the variable diameter shaft assembly, a lifting assembly is arranged on the inner side surface of the bracket, an arc-shaped transmission assembly is arranged at one end of the middle shaft, and a tail shaft assembly is arranged at one end of another group of the middle shafts;

[0006] The lifting assembly works in coordination with the arc transmission assembly, the arc transmission assembly realizes power transmission, motion conversion and can adapt to arc-shaped buildings. The lifting assembly lifts the arc transmission assembly, effectively overcoming the sagging and deformation problem of the arc transmission assembly during the operation of the roller shutter. The lifting assembly and the arc transmission assembly have various forms, all of which are within the protection scope of the present invention.

[0007] Preferably, the brackets are provided in multiple groups, and the central axis is provided in multiple groups.

[0008] Preferably, the variable diameter shaft assembly includes a connecting block, a clamping block, a side shaft and a side shaft flange, one side surface of the bracket plate is fixedly connected to the connecting block, one side surface of the connecting block is fixedly connected to the clamping block, the outer surface of the clamping block is clamped with the side shaft, and one side surface of the side shaft is bolted to the side shaft flange.

[0009] Preferably, a side surface of the side shaft flange is bolted to the middle shaft.

[0010] Preferably, the lifting assembly includes a mounting frame, a connecting shaft, a large roller and a small roller. The inner surface of the bracket is fixedly connected to the mounting frame, the inner surface of the mounting frame is fixedly connected to the connecting shaft, the outer surface of the connecting shaft is rotatably connected to the large roller, and the outer surface of the connecting shaft is rotatably connected to the small roller.

[0011] Preferably, the connecting shafts are provided in multiple groups on the outer surface of the mounting frame, the large rollers are provided in multiple groups, and the small rollers are provided in multiple groups.

[0012] Preferably, the arc-shaped transmission assembly includes an outer package, a transmission block, a cross shaft, a connecting flange, a rotating shaft and a stretching block, one end of the central axis is fixedly connected to the outer package, one end of the central axis is fixedly connected to the transmission block, one side surface of the transmission block is fixedly connected to a cross shaft, one end of the cross shaft is bolted to a connecting flange, one side surface of the connecting flange is bolted to a rotating shaft, one side surface of the rotating shaft is fixedly connected to a stretching block, and the arc-shaped transmission assembly satisfies the arc-shaped and right-angled rolling shutter movement modes through one group or multiple groups.

[0013] Preferably, the rotating shaft is distributed at both ends of the stretching block, and the stretching block is made of elastic material.

[0014] Preferably, the tail shaft assembly includes an extended tail shaft, a connecting seat, a connecting plate, a fixing plate, a bottom plate and a bottom plate bracket, one side surface of the central axis is fixedly connected to the extended tail shaft, one end of the extended tail shaft is fixedly connected to the connecting seat, one side surface of the connecting seat is fixedly connected to the connecting plate, one side surface of the connecting plate is bolted to the fixing plate, one side surface of the fixing plate is bolted to the bottom plate, and the outer side surface of the bottom plate is fixedly connected to the bottom plate bracket.

[0015] Preferably, the invisible guide rail adopts one-piece molding and fire-proof expansion technology, and the material is stainless steel. Combined with the single-layer fireproof cloth of the new product, it can achieve right-angle and arc-shaped construction movement methods.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This single-motor steerable roller blind effectively solves the influence of the windproof hook on the shaft diameter by setting a variable diameter shaft assembly, making the device structure more compact and reasonable, reducing space occupation and improving overall stability;

[0018] 2. Through the setting of the arc transmission component, the arc transmission component realizes flexible direction conversion and transmission angle change through the unique structure of the cross shaft, adapting to the needs of arc movement. The setting of the outer wrapping and stretching block further improves the stability and reliability of the transmission, protects the curtain fabric and reduces the impact of vibration;

[0019] 3. Through the setting of the lifting assembly, the large roller and the small roller provide stable lifting and good lubrication for the transmission parts, reducing the damage to the curtain fabric caused by friction, significantly extending the service life of the rolling curtain fabric and reducing maintenance costs;

[0020] 4. Through the setting of the tail shaft assembly, the lengthened tail shaft design provides enough space for the windproof hook, ensuring the flatness of the curtain when it is retracted, and fundamentally solves the problem of the windproof hook increasing the thickness of the curtain;

[0021] 5. The arc-shaped design of the overall device can perfectly adapt to the arc-shaped building structure, which not only ensures the fire protection function, but also improves the aesthetics and space utilization of the building.

[0022] 6. It is 200mm-300mm smaller than traditional roller shutters. Traditional roller shutters require more than 400mm-800mm of installation space, while this roller shutter only requires 180mm-200mm of installation space, which greatly reduces the demand for installation space and makes the installation of fireproof roller shutters more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the side appearance structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the support and the motor cooperating with each other in the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the support plate and the support cooperating with each other in the present invention;

[0026] Figure 4 Schematic diagram of the cooperation between the side shaft and the side shaft flange of the present invention

[0027] Figure 5 It is a schematic diagram of the structure of the lifting assembly of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the arc transmission assembly of the present invention;

[0029] Figure 7 This is a schematic diagram of the matching structure of multiple sets of arc-shaped transmission components of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the rotating shaft and the stretching block cooperating with each other in the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of the tail shaft assembly of the present invention.

[0032] In the figure: 1. bracket plate; 2. bracket; 3. motor; 4. reducing shaft assembly; 401. connecting block; 402. clamping block; 403. side shaft; 404. side shaft flange; 5. middle shaft; 6. lifting assembly; 601. mounting frame; 602. connecting shaft; 603. large roller; 604. small roller; 7. arc transmission assembly; 701. outer package; 702. transmission block; 703. cross shaft; 704. connecting flange; 705. rotating shaft; 706. stretching block; 8. tail shaft assembly; 801. extended tail shaft; 802. connecting seat; 803. connecting plate; 804. fixing plate; 805. bottom plate; 806. bottom plate bracket. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the new embodiment of the present invention to clearly and completely describe the technical solutions in the new embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Embodiment 1:

[0035] See also Figure 1-9 The present invention provides a technical solution: a single-motor steerable roller blind, comprising a bracket plate 1, a bracket 2 is fixedly connected to one side surface of the bracket plate 1, a motor 3 is fixedly connected to one side surface of the bracket plate 1, a variable diameter shaft assembly 4 is arranged on one side surface of the bracket plate 1, a middle shaft 5 is arranged on one side surface of the variable diameter shaft assembly 4, a lifting assembly 6 is arranged on the inner side surface of the bracket 2, an arc transmission assembly 7 is arranged at one end of the middle shaft 5, and a tail shaft assembly 8 is arranged at one end of another group of middle shafts 5;

[0036] The lifting assembly 6 works with the arc transmission assembly 7, the arc transmission assembly 7 realizes power transmission, motion conversion and can adapt to arc-shaped buildings. The lifting assembly 6 lifts the arc transmission assembly 7, effectively overcoming the sagging deformation problem of the arc transmission assembly 7 during the operation of the roller shutter. The lifting assembly 6 and the arc transmission assembly 7 have various forms, all of which are within the protection scope of the present invention.

[0037] Furthermore, the bracket 2 is provided with multiple groups, and the central axis 5 is provided with multiple groups. Through the setting of the bracket 2, when in use, the multiple groups of brackets 2 are evenly distributed and fixedly connected to the bracket plate 1, playing the role of supporting and positioning the internal components of the entire device.

[0038] Furthermore, the reducer shaft assembly 4 includes a connecting block 401, a clamping block 402, a side shaft 403 and a side shaft flange 404. The connecting block 401 is fixedly connected to one side surface of the bracket plate 1, the clamping block 402 is fixedly connected to one side surface of the connecting block 401, the side shaft 403 is engaged with the outer surface of the clamping block 402, and the side shaft flange 404 is bolted to one side surface of the side shaft 403. By setting the connecting block 401, the clamping block 402, the side shaft 403 and the side shaft flange 404, when in use, the connecting block 401 is fixed to one side surface of the bracket plate 1, the clamping block 402 is fixed to the connecting block 40 The side surface of the side shaft 403 is designed in shape and size to match the outer contour of the side shaft 403, so as to realize the precise positioning and constraint of the side shaft 403. The side shaft flange 404 is connected to the side surface of the side shaft 403 by bolts. The structural design of the side shaft flange 404 ensures the reliable connection between the side shaft 403 and the middle shaft 5, so that the two can work together during the rotation process to realize the effective transmission of force. When the motor 3 drives the middle shaft 5 to rotate, the torque of the middle shaft 5 is transmitted to the side shaft 403 through the side shaft flange 404, so that the side shaft 403 rotates synchronously with the middle shaft 5, thereby increasing the stability during operation.

[0039] Furthermore, the side surface of the side shaft flange 404 is bolted to the middle shaft 5. Through the setting of the side shaft flange 404, when in use, the side shaft flange 404 is installed on the side shaft 403. While meeting the installation requirements of the windproof hook, it avoids excessive increase in the overall diameter of the shaft due to the presence of the windproof hook, reduces space occupancy, and is conducive to the coordinated installation of other components and the variable diameter shaft assembly 4.

[0040] Furthermore, the lifting assembly 6 includes a mounting frame 601, a connecting shaft 602, a large roller 603 and a small roller 604. The inner surface of the bracket 2 is fixedly connected to the mounting frame 601, the inner surface of the mounting frame 601 is fixedly connected to the connecting shaft 602, the outer surface of the connecting shaft 602 is rotatably connected to the large roller 603, and the outer surface of the connecting shaft 602 is rotatably connected to the small roller 604. Through the arrangement of the mounting frame 601, the connecting shaft 602, the large roller 603 and the small roller 604, when in use, the large roller 603 and the small roller 604 generate an upward lifting force by virtue of their contact with the cross shaft 703. When the cross shaft 703 is pulled upward by gravity or other forces, the lifting force is increased. When there is a tendency to sag under force, it will squeeze the roller surface of the roller, and the roller will generate a reaction force of equal size and opposite direction on the cross shaft 703, that is, an upward lifting force. This lifting force can offset part of the gravity of the cross shaft 703, thereby effectively reducing its sagging deformation. Due to its large diameter, the large roller 603 has a relatively large contact area with the cross shaft 703, and can provide a more stable lifting force when subjected to greater pressure. The small roller 604 can supplement the lifting force in some local positions or when the cross shaft 703 is subjected to uneven force, ensuring that the cross shaft 703 can be properly supported in all parts. By providing a stable lifting force, the lifting group Component 6 can keep the cross shaft 703 in a straight line as much as possible during the movement, reducing the sagging and deformation of the cross shaft 703, thereby enhancing its stability during the rotation process. At the same time, the stable cross shaft 703 can also reduce the damage to the rolling curtain caused by shaking or vibration, thereby extending the service life of the rolling curtain. After the large roller 603 and the small roller 604 are subjected to the pressure of the cross shaft 703, the force is transmitted to the connecting shaft 602, and the connecting shaft 602 then transmits the force to the mounting frame 601, and finally the force is dispersed to the structure of the entire device through the bracket 2. The coordinated work of the large roller 603 and the small roller 604 realizes the all-round support of the cross shaft 703. Their distribution and rotation mode on the connecting shaft 602 ensure that the cross shaft 703 can obtain appropriate support no matter what state of motion it is in. When the cross shaft 703 is slightly offset or tilted during rotation, the large roller 603 and the small roller 604 can adjust the contact angle through their own rotation, and always maintain effective support for the cross shaft 703. The lifting component 6 effectively overcomes the sagging and deformation problems of the cross shaft 703 during the operation of the rolling shutter, ensures the straightness and stability of the cross shaft 703, thereby ensuring the accuracy and efficiency of power transmission, and plays a key supporting role in the normal operation of the entire arc-shaped single-layer fireproof rolling shutter device.

[0041] Furthermore, multiple groups of connecting shafts 602 are arranged on the outer surface of the mounting frame 601, multiple groups of large rollers 603 are arranged, and multiple groups of small rollers 604 are arranged. Through the arrangement of the large rollers 603 and the small rollers 604, when in use, when the cross shaft 703 moves, the large rollers 603 and the small rollers 604 rotate with it, and interact with the cross shaft 703 by rolling friction rather than sliding friction, thereby reducing the friction between the cross shaft 703 and the rollers, reducing energy loss and component wear, and extending the service life of the components.

[0042] Furthermore, the arc transmission assembly 7 includes an outer package 701, a transmission block 702, a cross shaft 703, a connecting flange 704, a rotating shaft 705 and a stretching block 706. One end of the central axis 5 is fixedly connected to the outer package 701, one end of the central axis 5 is fixedly connected to the transmission block 702, one side surface of the transmission block 702 is fixedly connected to the cross shaft 703, one end of the cross shaft 703 is bolted to the connecting flange 704, one side surface of the connecting flange 704 is bolted to the rotating shaft 705, and one side surface of the rotating shaft 705 is fixedly connected to the stretching block 706. Through the arrangement of the outer package 701, the transmission block 702, the cross shaft 703, the connecting flange 704, the rotating shaft 705 and the stretching block 706, when in use, the motor 3 is started to drive the central axis 5 to rotate, the central axis 5 transmits power to the transmission block 702, drives the transmission block 702 to rotate, and the transmission block 70 2 rotation drives the cross shaft 703 to rotate. Due to the special cross structure of the cross shaft 703, it can convert the single-direction rotational motion from the central axis 5 into two mutually perpendicular directions of sub-motion, and then drive the rotating shaft 705 to rotate through the connecting flange 704. The angles of the two groups of cross shafts 703 are changed by stretching the stretching block 706. It can be suitable for various curved buildings. The outer package 701 is tightly wrapped on the outside of the curved transmission component 7 to form a relatively closed protective layer, which can prevent dust, debris, etc. from entering the transmission part and avoid interfering with the normal operation of the transmission parts. At the same time, the outer package 701 can also prevent the rolling curtain from being directly in contact with the transmission parts during the movement and being damaged, ensuring the integrity and service life of the rolling curtain. The curved transmission component 7 meets the curved and right-angle rolling curtain movement mode through one or more groups.

[0043] Furthermore, the rotating shaft 705 is distributed at both ends of the stretching block 706, and the stretching block 706 is made of elastic material. Through the setting of the stretching block 706, when in use, the angle between the two sets of cross shafts 703 can be changed through the elastic deformation of the stretching block 706. When the roller shutter runs along the arc track, the transmission angle needs to be adjusted due to the change in the curvature of the track. The elastic characteristics of the stretching block 706 allow relative displacement between the cross shafts 703, thereby changing their angle to match different arc tracks.

[0044] Furthermore, the tail shaft assembly 8 includes an extended tail shaft 801, a connecting seat 802, a connecting plate 803, a fixing plate 804, a bottom plate 805 and a bottom plate bracket 806. One side surface of the middle shaft 5 is fixedly connected with the extended tail shaft 801, one end of the extended tail shaft 801 is fixedly connected with the connecting seat 802, one side surface of the connecting seat 802 is fixedly connected with the connecting plate 803, one side surface of the connecting plate 803 is bolted with the fixing plate 804, one side surface of the fixing plate 804 is bolted with the bottom plate 805, and the outer side surface of the bottom plate 805 is fixedly connected with the bottom plate bracket 806. By arranging the extended tail shaft 801, the connecting seat 802, the connecting plate 803, the fixing plate 804, the bottom plate 805 and the bottom plate bracket 806, when in use, the extended tail shaft 801 can provide sufficient accommodating space for the windproof hook to To solve the problem of increased curtain thickness due to the presence of the windproof hook, when the roller curtain is retracted, the windproof hook can be located in the space occupied by the extended tail shaft 801, avoiding the accumulation and wrinkling of the curtain in this area, thereby ensuring the overall flatness and smooth reeling of the roller curtain. The connecting seat 802 is connected to one end of the extended tail shaft 801, and it plays the role of a transition connection, transmitting the power and movement of the extended tail shaft 801 to the connecting plate 803. One side surface of the connecting plate 803 is fixedly connected to the connecting seat 802, and the other side surface is connected to the fixed plate 804 by bolts. The arrangement of multiple connecting plates 803 increases the reliability and stability of the connection, and they jointly transmit the force of the connecting seat 802 to the fixed plate 804, and the fixed plate 804 is further connected to the bottom plate 805 by bolts, forming a stable structural frame.

[0045] Furthermore, the invisible guide rail adopts one-piece molding and fire-proof expansion technology. The material is stainless steel. Combined with the single-layer fireproof cloth of the new product, it can achieve right-angle and arc-shaped construction movement methods.

[0046] Working principle: the connecting block 401 is fixed on one side surface of the bracket plate 1, and the clamping block 402 is fixed on one side surface of the connecting block 401. The shape and size design of the connecting block 401 match the outer contour of the side shaft 403, so as to realize the precise positioning and constraint of the side shaft 403. The side shaft flange 404 is connected to the one side surface of the side shaft 403 by bolts. The structural design of the side shaft flange 404 ensures the reliable connection between the side shaft 403 and the middle shaft 5, so that the two can work together during the rotation process to realize the effective transmission of force. At the same time, the side shaft 403 can meet the installation requirements of the windproof hook while avoiding the excessive increase in the overall diameter of the shaft due to the existence of the windproof hook, thus reducing the space occupied and facilitating the coordinated installation of other components with the variable diameter shaft assembly 4. When the motor 3 drives the middle shaft 5 to rotate When rotating, the torque of the middle axis 5 is transmitted to the side axis 403 through the side axis flange 404, so that the side axis 403 rotates synchronously with the middle axis 5, increasing the stability during operation, starting the motor 3, driving the middle axis 5 to rotate, and the middle axis 5 transmits power to the transmission block 702, driving the transmission block 702 to rotate, and the rotation of the transmission block 702 drives the cross axis 703 to rotate. Due to the special cross structure of the cross axis 703, it can convert the single-direction rotational motion from the middle axis 5 into two mutually perpendicular directions of sub-motion, and then drive the rotation shaft 705 to rotate through the connecting flange 704, and change the angle of the two sets of cross axes 703 by stretching the stretching block 706. It can be suitable for various curved buildings, and the outer package 701 is tightly wrapped on the outside of the curved transmission component 7. A relatively closed protective layer is formed to prevent dust, debris, etc. from entering the transmission parts, avoiding interference with the normal operation of the transmission parts. At the same time, the outer package 701 can also prevent the rolling curtain fabric from being damaged by direct contact with the transmission parts during movement, thereby ensuring the integrity and service life of the rolling curtain fabric. The large roller 603 and the small roller 604 generate an upward lifting force by virtue of their contact with the cross shaft 703. When the cross shaft 703 tends to sag due to gravity or other forces, it will squeeze the roller surface of the roller, and the roller will generate an equal and opposite reaction force on the cross shaft 703, that is, an upward lifting force. This lifting force can offset part of the gravity of the cross shaft 703, thereby effectively reducing its sagging deformation. The large roller 60 Due to its large diameter, the contact area with the cross shaft 703 is relatively large, and it can provide a more stable lifting force when subjected to a large pressure. The small roller 604 can supplement the lifting force in some local positions or when the cross shaft 703 is subjected to uneven force, ensuring that the cross shaft 703 can be properly supported at all positions. By providing a stable lifting force, the lifting assembly 6 can keep the cross shaft 703 in a straight line as much as possible during the movement, reducing the sagging and deformation of the cross shaft 703, thereby enhancing its stability during the rotation process. At the same time, the stable cross shaft 703 can also reduce the damage to the rolling curtain caused by shaking or vibration, thereby extending the service life of the rolling curtain. After the large roller 603 and the small roller 604 are subjected to the pressure of the cross shaft 703,The force is transmitted to the connecting shaft 602, and the connecting shaft 602 then transmits the force to the mounting frame 601, and finally the force is dispersed to the structure of the entire device through the bracket 2. The coordinated work of the large roller 603 and the small roller 604 realizes the all-round support of the cross shaft 703. Their distribution and rotation method on the connecting shaft 602 ensure that the cross shaft 703 can get appropriate support no matter what kind of movement state it is in. When the cross shaft 703 has a slight offset or tilt during the rotation process, the large roller 603 and the small roller 604 can adjust the contact angle through their own rotation to always maintain effective support for the cross shaft 703. When the cross shaft 703 moves, the large roller 603 and the small roller 604 rotate with it, and interact with the cross shaft 703 by rolling friction rather than sliding friction, thereby reducing the friction between the cross shaft 703 and the rollers, reducing energy loss and component wear, and extending the service life of the components. The lifting component 6 effectively overcomes the sagging and deformation problems of the cross shaft 703 during the operation of the roller blind, ensuring the cross shaft 703 The straightness and stability of the tail shaft 801 ensure the accuracy and efficiency of power transmission, which plays a key supporting role in the normal operation of the entire arc-shaped single-layer fireproof rolling curtain device. The extended tail shaft 801 can provide sufficient accommodation space for the windproof hook to solve the problem of increased curtain thickness due to the existence of the windproof hook. When the curtain is retracted, the windproof hook can be located in the space occupied by the extended tail shaft 801, avoiding the accumulation and wrinkles of the curtain in this part, thereby ensuring the overall flatness and smooth retraction of the curtain. The connecting seat 8 02 is connected to one end of the extended tail shaft 801, and it plays the role of transition connection, transmitting the power and movement of the extended tail shaft 801 to the connecting plate 803. One side surface of the connecting plate 803 is fixedly connected to the connecting seat 802, and the other side surface is connected to the fixing plate 804 by bolts. The setting of multiple connecting plates 803 increases the reliability and stability of the connection. They jointly transmit the force of the connecting seat 802 to the fixing plate 804, and the fixing plate 804 is then connected to the bottom plate 805 by bolts to form a stable structural frame.

[0047] Embodiment 2:

[0048] A single-motor steerable roller blind comprises a bracket plate 1, a bracket 2 is fixedly connected to one side surface of the bracket plate 1, a motor 3 is fixedly connected to one side surface of the bracket plate 1, a variable diameter shaft assembly 4 is arranged on one side surface of the bracket plate 1, a middle shaft 5 is arranged on one side surface of the variable diameter shaft assembly 4, a lifting assembly 6 is arranged on the inner side surface of the bracket 2, an arc-shaped transmission assembly 7 is arranged at one end of the middle shaft 5, and a tail shaft assembly 8 is arranged at one end of another group of middle shafts 5;

[0049] The lifting component 6 works with the arc transmission component 7. The arc transmission component 7 realizes power transmission, motion conversion and can adapt to arc-shaped buildings. The lifting component 6 lifts the arc transmission component 7, effectively overcoming the sagging deformation problem of the arc transmission component 7 during the operation of the roller shutter. In the gear-driven arc roller shutter mechanism, a plurality of gears of different sizes and numbers of teeth are mainly used to mesh with each other to realize power transmission and motion conversion. A main gear concentric with the roller shutter shaft is installed on one or both sides of the arc track of the roller shutter. The power driven by the motor is transmitted to the main gear through a series of reduction gear sets. Along the arc track, a plurality of driven gears are evenly distributed. These driven gears mesh with the main gear to transmit the rotational motion to the roller shutter shaft, driving the roller shutter to rise and fall along the arc track. In order to ensure the accuracy and stability of the gear transmission, the gears are usually made of high-strength alloy steel and are precision machined and heat treated to ensure Its tooth profile accuracy and wear resistance, at the same time, the gear box adopts a sealed design to prevent dust, debris, etc. from entering, affecting the meshing and transmission efficiency of the gears. In addition, by reasonably designing the module, number of teeth and transmission ratio of the gears, the required torque output and lifting speed can be achieved according to the different sizes and weights of the arc-shaped rolling shutters. At the key stress points near the gear transmission components, a lifting device consisting of a support seat, an elastic element and a support plate is arranged. The support seat is fixed on the device frame, and the elastic element is placed between the support seat and the support plate. When the rolling shutter is in operation, due to gravity or other external forces, the transmission components generate downward pressure, and the support plate provides an upward lifting force under the support of the elastic element, which buffers the pressure shock and reduces the deformation and wear of the transmission components. At the same time, it also helps to maintain the meshing accuracy between the gears, ensure the stability of power transmission, extend the service life of the entire transmission mechanism, and ensure the reliable operation of the arc-shaped rolling shutter.

[0050] Embodiment 3:

[0051] A single-motor steerable roller blind comprises a bracket plate 1, a bracket 2 is fixedly connected to one side surface of the bracket plate 1, a motor 3 is fixedly connected to one side surface of the bracket plate 1, a variable diameter shaft assembly 4 is arranged on one side surface of the bracket plate 1, a middle shaft 5 is arranged on one side surface of the variable diameter shaft assembly 4, a lifting assembly 6 is arranged on the inner side surface of the bracket 2, an arc-shaped transmission assembly 7 is arranged at one end of the middle shaft 5, and a tail shaft assembly 8 is arranged at one end of another group of middle shafts 5;

[0052] The lifting assembly 6 works with the arc-shaped transmission assembly 7, and the arc-shaped transmission assembly 7 realizes power transmission and motion conversion and can adapt to the arc-shaped building. The lifting assembly 6 lifts the arc-shaped transmission assembly 7, effectively overcoming the sagging deformation problem of the arc-shaped transmission assembly 7 during the operation of the rolling curtain. In the arc-shaped rolling curtain mechanism driven by multiple arc-shaped racks or chains, an arc-shaped rack parallel to the rolling curtain shaft is installed on the top arc-shaped frame of the rolling curtain. The motor drives one or more gears to mesh with the rack through the reducer, converting the rotational motion into a linear motion along the arc-shaped rack, thereby driving the rolling curtain shaft to rotate. To achieve the lifting and lowering of the roller blind, a chain drive is used. A chain track is arranged on the arc frame. The chain passes through multiple sprockets, one of which is connected to a motor as a driving sprocket. The motor drives the chain to circulate, and the chain connector connected to the roller blind shaft converts the linear motion of the chain into the rotational motion of the roller shaft, thereby achieving the arc lifting and lowering of the roller blind. In order to ensure the synchronization and stability of multiple arc-shaped transmission components, a tensioning device is usually used to adjust the tightness of the rack or chain, and high-precision pins and bushings are used at the connection of the transmission components to reduce friction and wear. At the same time, in order to prevent dust and debris from entering the transmission parts, corresponding protective covers and sealing devices will be set to ensure the reliable operation of the transmission system and effectively protect the stable operation and overall structure of the arc roller shutter. In this transmission mode, for rack transmission, multiple support blocks are set at a certain distance below the rack. The support blocks are connected to the device frame through adjustable connecting rods. Rollers are installed on the support blocks. The rollers are in contact with the bottom surface of the rack, which can not only support the rack and reduce the sagging deformation of the rack due to its own weight, but also can The rolling of the roller reduces friction resistance and makes the rack move more smoothly. For chain transmission, a lifting device consisting of a sliding rod, a slider and a buffer spring is arranged below the slack side of the chain. The slider can slide on the sliding rod. One end of the buffer spring is connected to the slider, and the other end is fixed to the device frame. When the chain relaxes and sags due to force, the slider lifts the chain upward under the action of the spring to maintain appropriate tension of the chain, prevent the chain from derailing, ensure reliable power transmission, ensure smooth operation of the arc roller shutter, and reduce the wear of the chain and sprocket, thereby improving the durability and reliability of the entire transmission system.

[0053] Through the combination of these transmission methods and lifting mechanisms, the transmission system of the arc roller shutter can be effectively protected, the stability, reliability and safety of its operation can be improved, the use requirements of arc roller shutters in different places can be met, the service life of the equipment can be extended, the maintenance cost can be reduced, and good protection and isolation functions can be provided for the building. The roller shutter transmission or roller shutter turning transmission method composed of the cross-axis transmission method plus the lifting device is within the protection range.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-motor steerable roller blind, comprising a bracket plate (1), characterized in that: A support (2) is fixedly connected to one side surface of the support plate (1), a motor (3) is fixedly connected to one side surface of the support plate (1), a reducing shaft assembly (4) is provided on one side surface of the support plate (1), a middle shaft (5) is provided on one side surface of the reducing shaft assembly (4), a lifting assembly (6) is provided on the inner side surface of the support (2), an arc-shaped transmission assembly (7) is provided at one end of the middle shaft (5), and a tail shaft assembly (8) is provided at one end of another group of the middle shafts (5); The lifting assembly (6) works in coordination with the arc-shaped transmission assembly (7), and the arc-shaped transmission assembly (7) realizes power transmission and motion conversion and can adapt to arc-shaped buildings. The lifting assembly (6) lifts the arc-shaped transmission assembly (7), effectively overcoming the problem of sagging and deformation of the arc-shaped transmission assembly (7) during the operation of the rolling shutter. The lifting assembly (6) and the arc-shaped transmission assembly (7) have various forms, all of which are within the protection scope of the present invention.

2. A single-motor steerable roller blind according to claim 1, characterized in that: The brackets (2) are provided in multiple groups, and the central shafts (5) are provided in multiple groups.

3. A single-motor steerable roller blind according to claim 1, characterized in that: The variable diameter shaft assembly (4) comprises a connecting block (401), a clamping block (402), a side shaft (403) and a side shaft flange (404); one side surface of the support plate (1) is fixedly connected to the connecting block (401); one side surface of the connecting block (401) is fixedly connected to the clamping block (402); the outer side surface of the clamping block (402) is clamped with the side shaft (403); and one side surface of the side shaft (403) is bolted to the side shaft flange (404).

4. A single-motor steerable roller blind according to claim 3, characterized in that: A central shaft (5) is bolted to one side surface of the side shaft flange (404).

5. The single-motor steerable roller blind according to claim 1, characterized in that: The lifting assembly (6) comprises a mounting frame (601), a connecting shaft (602), a large roller (603) and a small roller (604); the inner surface of the bracket (2) is fixedly connected to the mounting frame (601); the inner surface of the mounting frame (601) is fixedly connected to the connecting shaft (602); the outer surface of the connecting shaft (602) is rotatably connected to the large roller (603); and the outer surface of the connecting shaft (602) is rotatably connected to the small roller (604).

6. A single-motor steerable roller blind according to claim 5, characterized in that: The connecting shafts (602) are provided in multiple groups on the outer surface of the mounting frame (601), the large rollers (603) are provided in multiple groups, and the small rollers (604) are provided in multiple groups.

7. The single-motor steerable roller blind according to claim 1, characterized in that: The arc-shaped transmission assembly (7) comprises an outer package (701), a transmission block (702), a cross shaft (703), a connecting flange (704), a rotating shaft (705) and a stretching block (706); one end of the central axis (5) is fixedly connected to the outer package (701); one end of the central axis (5) is fixedly connected to the transmission block (702); one side surface of the transmission block (702) is fixedly connected to the cross shaft (703); one end of the cross shaft (703) is bolted to the connecting flange (704); one side surface of the connecting flange (704) is bolted to the rotating shaft (705); one side surface of the rotating shaft (705) is fixedly connected to the stretching block (706); the arc-shaped transmission assembly (7) satisfies the arc-shaped and right-angle rolling curtain movement modes through one or more groups.

8. The single-motor steerable roller blind according to claim 7, characterized in that: The rotating shaft (705) is distributed at both ends of the stretching block (706), and the stretching block (706) is made of elastic material.

9. The single-motor steerable roller blind according to claim 1, characterized in that: The tail shaft assembly (8) comprises an extended tail shaft (801), a connecting seat (802), a connecting plate (803), a fixing plate (804), a bottom plate (805) and a bottom plate bracket (806); one side surface of the middle shaft (5) is fixedly connected to the extended tail shaft (801); one end of the extended tail shaft (801) is fixedly connected to the connecting seat (802); one side surface of the connecting seat (802) is fixedly connected to the connecting plate (803); one side surface of the connecting plate (803) is bolted to the fixing plate (804); one side surface of the fixing plate (804) is bolted to the bottom plate (805); and the outer side surface of the bottom plate (805) is fixedly connected to the bottom plate bracket (806).

10. The single-motor steerable roller blind according to claim 1, characterized in that: The invisible guide rail adopts one-piece molding and fire-proof expansion technology. The material is stainless steel. Combined with the single-layer fire-proof cloth of the new product, it can achieve right-angle and arc-shaped construction movement methods.

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