Curve combined fire resisting shutter capable of saving longitudinal space

Abstract

The utility model provides a curve combined fireproof roller shutter capable of saving longitudinal space, which comprises a plurality of groups of vertical roller shutters arranged at intervals and a plurality of groups of flexible roller shutters respectively arranged between adjacent vertical roller shutters, and the edges of two sides of each group of flexible roller shutters are respectively lapped with the vertical roller shutters on two sides and are attracted by magnetic attraction pieces; each group of vertical roller shutters comprises a roller shutter body, a support, a reel and a driving mechanism, the support is used for being fixedly mounted on the top mounting surface of the fireproof hole, the reel is rotationally connected to the support and used for winding the roller shutter body, the driving mechanism is arranged on the support, and the output end of the driving mechanism is in transmission connection with the reel; the bottom of the support is provided with a clearance notch for the top of the flexible roller shutter to extend into. According to the curve combined type fire resisting shutter capable of saving the longitudinal space, the installation space of the curve combined type fire resisting shutter can be compressed in the height direction, and the situation that the curve combined type fire resisting shutter cannot be installed and applied due to the fact that pipelines and bridges are arranged above a ceiling layer is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of fireproof rolling shutters, and particularly relates to a curve combined fireproof rolling shutter for saving longitudinal space. Background Art

[0002] The atrium of a large commercial complex project is usually a large-span, column-free, and curved transparent space. For such spatial characteristics, a combined fireproof rolling shutter needs to be adopted. The combined fireproof rolling shutter is mainly composed of multiple single-pane inorganic composite fireproof rolling shutters. For the position of a large-span and irregularly shaped opening, a flexible rolling shutter needs to be arranged between adjacent vertical rolling shutters, so that the flexible rolling shutter bends along with the irregular shape.

[0003] Components such as the installation supports and the rolling door machines of the combined fireproof rolling shutter need to be installed above the ceiling layer of the building, and sufficient installation space in the longitudinal direction is required. When various pipelines and bridge structures are arranged on the ceiling layer of the installation position, the installation will be restricted, thus affecting the use of the combined fireproof rolling shutter. In view of this actual situation, it is urgent to improve the installation structure of the combined fireproof rolling shutter. Summary of the Utility Model

[0004] The embodiment of the utility model provides a curve combined fireproof rolling shutter for saving longitudinal space, aiming to compress the longitudinal installation space of the combined fireproof rolling shutter.

[0005] To achieve the above object, the technical solution adopted by the utility model is: to provide a curve combined fireproof rolling shutter for saving longitudinal space, which includes a plurality of groups of vertical rolling shutters arranged at intervals, and a plurality of groups of flexible rolling shutters respectively arranged between adjacent vertical rolling shutters. The two side edges of each group of flexible rolling shutters are respectively lapped with the vertical rolling shutters on both sides thereof and adsorbed by magnetic parts; each group of vertical rolling shutters includes a rolling shutter body, a support, a winding shaft, and a driving mechanism. The support is used for fixedly installing on the top installation surface of the fireproof opening. The winding shaft is rotatably connected to the support and is used for winding the rolling shutter body. The driving mechanism is arranged on the support and the output end thereof is in transmission connection with the winding shaft; wherein, a clearance notch is arranged at the bottom of the support for the top of the flexible rolling shutter to extend into.

[0006] In a possible implementation manner, the rolling shutter body includes two vertical curtain surfaces arranged at intervals, and a sandwich space is formed between the two vertical curtain surfaces. The flexible rolling shutter includes two flexible curtain surfaces arranged at intervals. The edge of the flexible curtain surface extends into the sandwich space and laps with the vertical curtain surface; wherein, the support is connected with two winding shafts, and the two winding shafts are respectively located on both sides of the clearance notch and are respectively used for winding the two vertical curtain surfaces.

[0007] In some embodiments, the driving mechanism includes:

[0008] A first sprocket and a second sprocket, which are respectively sleeved on the same end of the two winding shafts;

[0009] A rotation driving member is fixedly connected to the support, and a driving sprocket is sleeved on the output end. The driving sprocket is located at the lower side of the first sprocket.

[0010] A chain is sleeved on the driving sprocket and is connected to the first sprocket and the second sprocket, and is used to drive the first sprocket and the second sprocket to rotate synchronously and reversely through the driving sprocket.

[0011] Exemplarily, the upper rims of the first sprocket and the second sprocket are both higher than the clearance notch. The driving mechanism further includes a first guide wheel and a second guide wheel. The first guide wheel is rotatably connected to the support and is located above one side of the clearance notch close to the second sprocket. The second guide wheel is located between the driving sprocket and the first sprocket and is higher than the first sprocket.

[0012] Wherein, the chain sequentially passes through the upper rims of the first sprocket and the first guide wheel from the driving sprocket, then surrounds the second sprocket, and returns to the driving sprocket through the upper rim of the second guide wheel at the upper rim of the second sprocket to form a loop.

[0013] Illustratively, two braking members are provided on the support, and the two braking members respectively act on the first sprocket and the second sprocket.

[0014] In a possible implementation manner, an elastic steel strip is provided at the edge of the surface of the vertical curtain facing the inner side of the sandwich space, and a magnetic attraction member is provided at the edge of the surface of the flexible curtain facing the outer side of the sandwich space. The magnetic attraction member is adsorbed and connected to the elastic steel strip.

[0015] In some embodiments, supporting shafts are respectively rotatably connected to both sides of the clearance notch below the support, and the two supporting shafts respectively roll on the surfaces of the two vertical curtains facing away from the sandwich space.

[0016] Exemplarily, the two flexible curtains are connected by multiple groups of support rods distributed at intervals up and down.

[0017] Illustratively, two connecting seats are arranged at intervals on the inner top wall of the clearance notch, and the top ends of the two flexible curtains are respectively fixedly connected to the two connecting seats.

[0018] In some embodiments, the adjacent vertical rolling curtains form an angle of 0° to 180° based on the flexible rolling curtain.

[0019] The beneficial effects of the curve combined fireproof rolling shutter that saves longitudinal space provided by the present utility model are as follows: Compared with the prior art, for the curve combined fireproof rolling shutter that saves longitudinal space of the present utility model, the rolling shutter body of the vertical rolling shutter is wound and unwound under the drive of a drive mechanism through a reel connected to a support, and the interval position between adjacent vertical rolling shutters is closed by overlapping a flexible rolling shutter. The flexible rolling shutter can be bent conformally at the position corresponding to the fireproof opening, so as to meet the installation requirements of fireproof openings with large spans and irregular shapes. On this basis, by opening an air avoidance notch at the bottom of the support, the overlapping area of the flexible rolling shutter and the vertical rolling shutter can extend upward into the air avoidance notch, thereby saving the longitudinal installation space of the flexible rolling shutter, further compressing the installation space of the curve combined fireproof rolling shutter in the height direction, avoiding the situation that the curve combined fireproof rolling shutter cannot be installed and applied due to the layout of pipelines and cable trays above the suspended ceiling layer, and circumventing the application limitation of the installation height space on the curve combined fireproof rolling shutter, so as to improve the product application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic installation structure diagram of the curve combined fireproof rolling shutter that saves longitudinal space provided by an embodiment of the present utility model;

[0021] Figure 2 is a front view structure schematic diagram of the flattened state of the curve combined fireproof rolling shutter that saves longitudinal space provided by an embodiment of the present utility model;

[0022] Figure 3 is a Figure 2 cross-sectional structure schematic diagram along line A-A in

[0023] Figure 4 is a cross-sectional structure schematic diagram along line A-A when the curve combined fireproof rolling shutter that saves longitudinal space provided by an embodiment of the present utility model is in the upward retracted state; Figure 2 cross-sectional structure schematic diagram along line A-A in

[0024] Figure 5 is a schematic installation structure diagram of the vertical rolling shutter and the flexible rolling shutter adopted in an embodiment of the present utility model when in the upward retracted state;

[0025] Figure 6 is a schematic overlapping structure diagram between the vertical curtain cloth and the flexible curtain cloth adopted in an embodiment of the present utility model.

[0026] In the figure: 10, vertical rolling curtain; 11, rolling curtain body; 111, vertical curtain surface; 1111, elastic steel strip; 112, sandwich space; 12, support; 121, clearance notch; 122, braking member; 123, supporting shaft; 124, connecting seat; 13, reel; 14, driving mechanism; 141, first sprocket; 142, second sprocket; 143, rotary driving member; 1431, driving sprocket; 144, chain; 145, first guide wheel; 146, second guide wheel; 15, guide rail; 20, flexible rolling curtain; 21, flexible curtain surface; 22, support rod; 23, towing rope; 30, magnetic attraction member; 40, ceiling layer; 50, top mounting surface. Detailed implementation manners

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] It should be noted that when an element is referred to as being "arranged on" or "connected to" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or several of such features. In the description of the present application, the meaning of "a plurality of" or "several" is two or more, unless otherwise specifically defined.

[0029] Please refer to Figures 1 to 6, the curve combined fireproof rolling shutter for saving vertical space provided by the present utility model will be described hereinafter. The curve combined fireproof rolling shutter for saving vertical space includes a plurality of groups of vertical rolling shutters 10 arranged at intervals, and a plurality of groups of flexible rolling shutters 20 respectively arranged between adjacent vertical rolling shutters 10. The two side edges of each group of flexible rolling shutters 20 are respectively lapped with the vertical rolling shutters 10 on both sides thereof and adsorbed by magnetic adsorption members 30; each group of vertical rolling shutters 10 includes a rolling shutter body 11, a support 12, a winding shaft 13, and a driving mechanism 14. The support 12 is used for fixedly installing on the top mounting surface 50 of the fireproof opening. The winding shaft 13 is rotatably connected to the support 12 and is used for winding the rolling shutter body 11. The driving mechanism 14 is arranged on the support 12 and the output end thereof is in transmission connection with the winding shaft 13; wherein, an avoidance notch 121 is provided at the bottom of the support 12 for the top of the flexible rolling shutter 20 to extend into.

[0030] It should be explained that each group of vertical rolling shutters 10 and flexible rolling shutters 20 in this embodiment are single-leaf fireproof rolling shutters in the prior art. Among them, the vertical rolling shutter 10 forms a vertical lifting opening and closing mode by the guiding constraint of the guide rail 15 in the vertical direction. The flexible rolling shutter 20 can be bent conformally according to the shape of the fireproof opening. In order to ensure the tightness of the lap between the flexible rolling shutter 20 and the vertical rolling shutter 10, the lap width between the two is not less than five hundred millimeters, and the lap area is adsorbed and connected by the magnetic adsorption member 30 when the two extend downward to close the fireproof opening, so as to ensure the lap sealing effect.

[0031] Since the vertical rolling shutter 10 and the flexible rolling shutter 20 overlap each other, generally, the rolling door machines (the rolling door machine of the vertical rolling shutter 10 is used for rolling up the rolling shutter body 11, and the rolling door machine of the flexible rolling shutter 20 is used for rolling up the traction ropes 23 connected to both sides of the flexible rolling shutter 20 so that the flexible rolling shutter 20 is folded and stored in the sandwich space 112) supporting their respective tops need to be staggered up and down, thus occupying a large height space. In this embodiment, by providing the avoidance notch 121 at the bottom of the support 12, the top of the flexible rolling shutter 20 can be connected to the position avoided by the avoidance notch 121, so as to form a state where the support 12 straddles above the flexible rolling shutter 20. In this way, the flexible rolling shutter 20 and the vertical rolling shutter 10 can occupy the same vertical height space, and at the same time, the horizontal misalignment can be formed at the edges of the flexible rolling shutter 20 and the vertical rolling shutter 10 by their mutual overlap, so that the supporting rolling door machines are arranged in a staggered manner on the same horizontal plane, thereby achieving the purpose of saving vertical space.

[0032] Compared with the prior art, the combined curved fire shutter that saves longitudinal space provided by this embodiment has a shutter body 11 of the vertical shutter 10 that is wound and unwound by a reel 13 connected to a support 12 under the drive of a drive mechanism 14 to achieve opening and closing. The interval position between adjacent vertical shutters 10 is closed by overlapping a flexible shutter 20. The flexible shutter 20 can be bent conformally at the position corresponding to the fire hole, so as to meet the installation requirements of large-span irregular-shaped fire holes. On this basis, by opening an avoidance notch 121 at the bottom of the support 12, the overlapping area of the flexible shutter 20 and the vertical shutter 10 can extend upward into the avoidance notch 121, thereby saving the longitudinal installation space of the flexible shutter 20, further compressing the installation space of the combined curved fire shutter in the height direction, avoiding the situation where the combined curved fire shutter cannot be installed and applied due to the layout of pipelines and cable trays above the suspended ceiling layer 40, and circumventing the application limitation of the combined curved fire shutter by the installation height space, so as to improve the product application range.

[0033] In some embodiments, referring to Figures 2 to 5 , the shutter body 11 includes two vertical curtain surfaces 111 arranged at intervals, and a sandwich space 112 is formed between the two vertical curtain surfaces 111. The flexible shutter 20 includes two flexible curtain surfaces 21 arranged at intervals. The edges of the flexible curtain surfaces 21 extend into the sandwich space 112 and overlap with the vertical curtain surfaces 111. Among them, the support 12 is connected with two reels 13, and the two reels 13 are respectively located on both sides of the avoidance notch 121 and are respectively used for winding the two vertical curtain surfaces 111.

[0034] Adopting two vertical curtain surfaces 111 to form a sandwich space 112 can improve the fire and smoke prevention ability of the shutter body 11. On this basis, the two flexible curtain surfaces 21 extend into the sandwich space 112 and overlap with the vertical curtain surfaces 111, which can use the vertical curtain surfaces 111 to form a partition and restraint on the flexible curtain surfaces 21, avoiding the flexible curtain surfaces 21 from turning outwards and generating a gap with the vertical curtain surfaces 111, thereby improving the overlapping tightness of the flexible curtain surfaces 21 and the vertical curtain surfaces 111. At the same time, by placing the two reels 13 for winding the vertical curtain surfaces 111 on both sides of the avoidance notch 121, the height space can be saved.

[0035] As a specific implementation manner of the above drive mechanism 14, please refer to Figure 5The driving mechanism 14 includes a first sprocket 141 and a second sprocket 142, a rotating driving member 143, and a chain 144; wherein the first sprocket 141 and the second sprocket 142 are respectively mounted on the same end of the two reels 13; the rotating driving member 143 is fixedly connected to the support 12, and a driving sprocket 1431 is mounted on the output end, and the driving sprocket 1431 is located at the lower side of the first sprocket 141; the chain 144 is mounted on the driving sprocket 1431 and is connected to the first sprocket 141 and the second sprocket 142, and is used to drive the first sprocket 141 and the second sprocket 142 to rotate synchronously in the opposite direction through the driving sprocket 1431.

[0036] Here, the rotating driving member 143 is specifically a rolling door machine for fireproof rolling shutters that meets the supporting standards of GB14102. The driving sprocket 1431 mounted on the output end of the rotating driving member 143 drives the first sprocket 141 and the second sprocket 142 to rotate synchronously in the opposite direction through the chain 144, thereby realizing the synchronous opposite rotation of the two reels 13, and then realizing the synchronous winding or unwinding of the two vertical curtains; specifically, in this embodiment, the winding directions of the two vertical curtains on the two reels 13 are opposite, and the two vertical curtains extend downward from the upper edge of the reel 13 into the guide rail 15, thereby forming a structure in which the two reels 13 are located outside the two spread vertical curtains, i.e., the interlayer space 112, which is conducive to the vertical curtains being promptly bonded and adsorbed with the flexible curtains after being spread, thereby improving the overlapping tightness and sealing of the vertical curtains and the flexible curtains near the suspended top layer 40, and enhancing the fire and smoke prevention effects.

[0037] Specifically, Figure 5 As shown, in this embodiment, the upper rims of the first sprocket 141 and the second sprocket 142 are both higher than the air avoidance slot 121; the driving mechanism 14 also includes a first guide wheel 145 and a second guide wheel 146, the first guide wheel 145 is rotatably connected to the support 12 and is located above the side of the air avoidance slot 121 close to the second sprocket 142, and the second guide wheel 146 is located between the driving sprocket 1431 and the first sprocket 141 and is higher than the first sprocket 141; wherein the chain 144 passes through the upper rims of the first sprocket 141 and the first guide wheel 145 from the driving sprocket 1431 in sequence, and then surrounds the second sprocket 142, and returns to the driving sprocket 1431 at the upper rim of the second sprocket 142 through the upper rim of the second guide wheel 146 to form a ring.

[0038] The path of the chain 144 is a closed loop, and there are upper and lower sections along its entire closed-loop path. For the convenience of understanding, these two sections are respectively defined as the upper chain section and the lower chain section. Among them, the lower chain section is placed on the first guide wheel 145, which can enable the entire chain 144 to move above the clearance notch 121, avoiding the chain 144 from rubbing and interfering with the flexible curtain. The upper chain section is placed on the second guide wheel 146, which can make the upper chain section higher than the lower chain section, thus avoiding the upper and lower chain sections from rubbing and colliding with each other. At the same time, the driving sprocket 1431 is located at the lower side of the first sprocket 141. Therefore, when the chain 144 forms a chain tooth meshing drive on the upper rim of the first sprocket 141, the chain 144 can obtain a larger wrap angle on the first sprocket 141, thereby ensuring the driving reliability of the chain 144 for the first sprocket 141. By setting the way that the chain 144 passes through the first sprocket 141 and the second sprocket 142, a way is formed in which the outer ring surface of the chain 144 meshes with the first sprocket 141, the inner ring surface meshes with the second sprocket 142 and the driving sprocket 1431. Thus, the first sprocket 141 and the driving sprocket 1431 can rotate in opposite directions, and the second sprocket 142 and the driving sprocket 1431 can rotate in the same direction, thereby realizing the synchronous reverse rotation of the first sprocket 141 and the second sprocket 142, and further meeting the synchronous lifting and closing requirements of the two vertical curtains. The transmission structure is simple and compact, saving space.

[0039] In some possible implementation manners, please refer to Figure 5 , two braking members 122 are provided on the support 12, and the two braking members 122 act on the first sprocket 141 and the second sprocket 142 respectively. The braking member 122 can specifically be a claw rotatably connected to the support 12, which can form braking by clamping into the tooth groove of the first sprocket 141 / second sprocket 142 when the vertical curtain reaches the switch position. When it is necessary to switch the vertical curtain, the braking rod connected to the rotating shaft of the claw drives the claw to rotate and disengage from the tooth groove to release the braking. Here, by acting the braking member 122 on the first sprocket 141 and the second sprocket 142, the braking reliability can be ensured, and at the same time, the compactness of the braking structure can be improved, thereby saving the installation space.

[0040] It should be noted that, as Figure 6 shown, an elastic steel strip 1111 is provided at the edge of the surface of the above-mentioned vertical curtain surface 111 facing the interlayer space 112, and a magnetic attraction member 30 is provided at the edge of the surface of the flexible curtain surface 21 facing the outside of the interlayer space 112. The magnetic attraction member 30 is adsorbed and connected to the elastic steel strip 1111. The elastic steel strip 1111 can be wound onto the reel 13 along with the vertical curtain, and when the vertical curtain is unrolled, it rebounds to a vertical state and is adsorbed and fixed to the magnetic attraction member 30 arranged on the flexible curtain surface 21, thereby improving the lap tightness and sealing line between the flexible curtain and the vertical curtain.

[0041] In some embodiments, please refer to Figure 3 and Figure 4, below the support 12, two support shafts 123 are rotatably connected to both sides of the clearance notch 121 respectively, and the two support shafts 123 are respectively rolled on the surfaces of the two vertical curtain surfaces 111 facing away from the sandwich space 112.

[0042] Since the vertical curtain is wound around the reel 13 and its winding radius changes layer by layer, when the vertical curtain unfolds from the reel 13, it cannot always be aligned with the guide rail 15, which not only affects the smoothness of the vertical curtain entering the guide rail 15, but also affects the adsorption timeliness of the elastic steel strip 1111 and the magnetic component 30, thereby affecting the lap tightness between the top of the vertical curtain and the flexible curtain. Here, by providing two idler rollers to roll and guide the vertical curtain, the vertical curtain can be aligned with the guide rail 15 in advance after unwinding the roll and the elastic steel strip 1111 can be adsorbed to the corresponding magnetic component 30, so as to improve the opening and closing smoothness and the sealing effect.

[0043] To improve the lap sealing performance between the flexible curtain and the vertical curtain, as Figure 3 shown, the two flexible curtain surfaces 21 are connected by multiple groups of support rods 22 distributed at intervals up and down. By pushing the two flexible curtain surfaces 21 apart to both sides through the support rods 22, the flexible curtain surfaces 21 can be closely attached to the vertical curtain surface 111, which can avoid the situation that the flexible curtain surface 21 is concave into the sandwich space 112 and separated from the vertical curtain surface 111.

[0044] In some embodiments, please refer to Figure 5 , two connecting seats 124 are arranged at intervals on the inner top wall of the clearance notch 121, and the top ends of the two flexible curtain surfaces 21 are respectively fixedly connected to the two connecting seats 124. Connecting the top of the flexible curtain surface 21 inside the clearance notch 121 can improve the connection reliability of the flexible curtain surface 21 on the one hand, and can also avoid the top connection structure of the flexible curtain surface 21 occupying additional height space, thereby improving the structural compactness.

[0045] For example, please refer to Figure 1 , the adjacent vertical rolling shutters 10 form an angle of 0° to 180° based on the flexible rolling shutter 20. The flexible rolling shutter 20 can be bent in accordance with the shape of the irregular fire prevention opening, so that the adjacent vertical rolling shutters 10 can be in the same straight line or form an angle, thereby improving the shielding and sealing performance of the fire prevention opening.

[0046] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The curved combined fireproof roller shutter that saves longitudinal space is characterized by: It comprises a plurality of groups of vertical rolling curtains arranged at intervals, and a plurality of groups of flexible rolling curtains respectively arranged between adjacent vertical rolling curtains, the two side edges of each group of the flexible rolling curtains respectively overlap the vertical rolling curtains on both sides thereof and are adsorbed by magnetic suction parts; each group of the vertical rolling curtains comprises a rolling curtain body, a support, a reel, and a driving mechanism, the support being used for being fixedly mounted on the top mounting surface of the fireproof hole opening, the reel being rotatably connected to the support and being used for winding up the rolling curtain body, the driving mechanism being arranged on the support and the output end being transmission-connected to the reel; wherein, the bottom of the support is provided with a space-avoiding slot for the top of the flexible rolling curtain to extend into.

2. The curved combined fireproof roller shutter for saving longitudinal space as claimed in claim 1, characterized in that: The roller blind body includes two vertical curtain surfaces arranged at intervals, and a sandwich space is formed between the two vertical curtain surfaces. The flexible roller blind includes two flexible curtain surfaces arranged at intervals, and the edges of the flexible curtain surfaces extend into the sandwich space and overlap with the vertical curtain surfaces. The support is connected to two rollers, and the two rollers are respectively located on both sides of the air avoidance slot and are respectively used to wind up the two vertical curtain surfaces.

3. The curved combined fireproof roller shutter for saving longitudinal space as claimed in claim 2, characterized in that: The driving mechanism comprises: The first sprocket and the second sprocket are respectively mounted on the same end of the two reels; A rotary drive member, fixedly connected to the support, and having an output end sleeved with a drive sprocket, the drive sprocket being located below the side of the first sprocket; The chain is sleeved on the driving sprocket and connected to the first sprocket and the second sprocket, and is used to drive the first sprocket and the second sprocket to rotate synchronously in opposite directions through the driving sprocket.

4. The curved combined fireproof roller shutter for saving longitudinal space as claimed in claim 3, characterized in that: The upper wheel edges of the first sprocket and the second sprocket are both higher than the clearance slot; the driving mechanism further comprises a first guide wheel and a second guide wheel, the first guide wheel is rotatably connected to the support and is located above a side of the clearance slot close to the second sprocket, and the second guide wheel is located between the driving sprocket and the first sprocket and is higher than the first sprocket; The chain passes through the first sprocket and the upper wheel rim of the first guide wheel from the driving sprocket in sequence, then surrounds the second sprocket, and returns to the driving sprocket through the upper wheel rim of the second guide wheel at the upper wheel rim of the second sprocket to form a ring.

5. The curved combined fireproof roller shutter for saving longitudinal space as claimed in claim 3, characterized in that: The support is provided with two brake members, and the two brake members act on the first sprocket and the second sprocket respectively.

6. The curved combined fireproof roller shutter for saving longitudinal space as claimed in claim 2, characterized in that: An elastic steel belt is arranged on the edge of the vertical curtain surface facing the inner side of the interlayer space, and a magnetic attraction component is arranged on the edge of the flexible curtain surface facing the outer side of the interlayer space. The magnetic attraction component is adsorbed and connected to the elastic steel belt.

7. The curved combined fireproof roller shutter for saving longitudinal space as claimed in claim 2, characterized in that: Support shafts are rotatably connected to the two sides of the air-avoiding slot below the support, and the two support shafts are respectively rolled on the surfaces of the two vertical curtain surfaces away from the interlayer space.

8. The curved combined fireproof roller shutter for saving longitudinal space as claimed in claim 2, characterized in that: The two flexible curtain surfaces are connected by a plurality of groups of support rods which are spaced apart from each other.

9. The curved combined fireproof roller shutter for saving longitudinal space as claimed in claim 2, characterized in that: Two connecting seats are arranged at intervals on the inner top wall of the air-avoiding slot, and the top ends of the two flexible curtain surfaces are fixedly connected to the two connecting seats respectively.

10. The curved combined fireproof roller shutter for saving longitudinal space according to any one of claims 1 to 9, characterized in that: Adjacent vertical rolling blinds form an angle of 0° to 180° based on the flexible rolling blind.

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