Roller shutter

Abstract

The invention provides a roller shutter which comprises a mounting support, a reel, curtain cloth and an energy storage device, and one end of the curtain cloth is fixedly connected with the reel; the energy storage device comprises a rotating frame, a fixed shaft and a plurality of coil springs; the fixed shaft is fixed with the mounting bracket; the fixed shaft is sleeved with the rotating frame, the rotating frame and the reel are fixed, and the rotating frame can rotate relative to the fixed shaft along with the reel; the rotating frame comprises a plurality of sub-supports, the sub-supports are sequentially arranged in the axial direction of the fixed shaft, and every two adjacent sub-supports are detachably connected; each sub-support is provided with a shaft hole, and the fixing shaft penetrates through the shaft hole of each sub-support. The coil spring is arranged outside the fixed shaft in a sleeving manner, and is arranged between every two adjacent sub-brackets; the inner end of the coil spring is connected with the fixing shaft, and the outer end of the coil spring is connected with the sub-support. According to the roller shutter, the rotating frame is designed to be of a detachable structure, the universality of the rotating frame is improved, and the design and manufacturing cost of the rotating frame is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of rolling blind structures, in particular to a rolling blind. Background Art

[0002] As a type of curtain, roller blinds are becoming more and more important in people's lives. They can not only block light and privacy, but also decorate and beautify the home.

[0003] In order to facilitate the lifting and suspension of the rolling curtain, an energy storage device is generally provided in the rolling curtain. For example, the rolling curtain device with a telescopic tube disclosed in patent CN210918830U includes a telescopic tube and a rolling curtain assembly, the rolling curtain assembly includes an energy storage assembly and a curtain surface, and the curtain surface is connected to the telescopic tube; the energy storage assembly includes an elastic element, a fixed rod and a rotating bracket, the fixed end and the stretching end of the elastic element are respectively fixedly connected to the fixed rod and the rotating bracket, and the rotating bracket can rotate relative to the fixed rod with the telescopic tube, so that the elastic element undergoes elastic deformation and stores force during the lifting and lowering process of the curtain surface, thereby realizing the suspension of the curtain surface and facilitating the lifting and lowering of the curtain surface.

[0004] However, for different rolling blind products, the number of elastic elements required in the energy storage device may be different (the weight of the blind surface is different), so the length of the rotating bracket also needs to be set differently. Since the rotating bracket in the current rolling blind is an integrated structure, different sizes of rotating brackets need to be designed and manufactured for different rolling blind products, which increases the manufacturing cost. Summary of the invention

[0005] The object of the present invention is to provide a rolling shutter, which can selectively assemble different numbers of sub-brackets according to different rolling shutter products by designing the rotating frame as a detachable structure. There is no need to separately design the rotating frame according to the requirements of different rolling shutter products, thereby improving the versatility of the rotating frame and reducing the design and production costs of the rotating frame.

[0006] The present invention provides a rolling curtain, comprising a mounting bracket, a reel, a curtain cloth and an energy storage device, wherein one end of the curtain cloth is fixedly connected to the reel, and the curtain cloth can be wound on the reel;

[0007] The energy storage device is arranged in the reel, and the energy storage device includes a rotating frame, a fixed shaft and a plurality of coil springs, and the fixed shaft is fixed to the mounting bracket; the rotating frame is sleeved outside the fixed shaft, the rotating frame is fixed to the reel, and the rotating frame can rotate relative to the fixed shaft along with the reel;

[0008] The rotating frame includes a plurality of sub-brackets, which are sequentially arranged along the axial direction of the fixed shaft, and each two adjacent sub-brackets are detachably connected; each sub-bracket is provided with an axial hole, and the fixed shaft passes through the axial hole of each sub-bracket;

[0009] The coil spring is sleeved outside the fixed shaft, and the coil spring is arranged between two adjacent sub-brackets; the inner end of the coil spring is connected to the fixed shaft, and the outer end of the coil spring is connected to the sub-bracket.

[0010] In an achievable manner, each of the sub-brackets includes a main body and an arm disposed on the main body, wherein the arm extends along the axial direction of the fixed shaft; the shaft hole is disposed on the main body, and the fixed shaft passes through the main body of each of the sub-brackets;

[0011] The main bodies of each two adjacent sub-brackets are spaced apart along the axial direction of the fixed axis, and the arms of each two adjacent sub-brackets are detachably connected; the coil spring is arranged between the main bodies of each two adjacent sub-brackets, and the outer end of the coil spring is connected to the arm.

[0012] In one achievable manner, a receiving cavity is formed between the main bodies and the arm rods of each two adjacent sub-brackets, and the coil spring is located in the receiving cavity.

[0013] In one achievable manner, in every two adjacent sub-brackets, a slot is provided on the arm of one of the sub-brackets, and a block is provided on the arm of the other sub-bracket, and the block is locked in the slot.

[0014] In an achievable manner, the arm is disposed at a side position of the main body; at least one side of each sub-bracket is provided with a plurality of the arm, and the plurality of the arm are spaced apart along the circumference of the main body;

[0015] In every two adjacent sub-brackets, the multiple arm bars on one of the sub-brackets are detachably connected to the multiple arm bars on the other sub-bracket.

[0016] In one achievable manner, the plurality of sub-brackets include a first sub-bracket and a plurality of second sub-brackets, wherein the first sub-bracket is located at the outermost side of the plurality of sub-brackets; the arm rod on the first sub-bracket is arranged on a side of the main body of the first sub-bracket close to the second sub-bracket, and the arm rod on the second sub-bracket is arranged on opposite sides of the main body of the second sub-bracket.

[0017] In one feasible manner, the fixed shaft includes an shaft head and a shaft rod connected to the shaft head, and the shaft head is fixed to the mounting bracket; a rotation groove is provided on the side of the main body of the first sub-bracket away from the second sub-bracket, the shaft head is located in the rotation groove, and the shaft rod passes through the main body of the first sub-bracket and the main body of each of the second sub-brackets in turn.

[0018] In an achievable manner, the fixed shaft comprises a shaft rod, the shaft rod passes through the shaft hole of each of the sub-brackets, the coil spring is sleeved outside the shaft rod, and the inner end of the coil spring is connected to the shaft rod;

[0019] There are multiple coil springs; the shaft includes multiple center shafts, which are arranged in sequence along the axial direction of the fixed shaft, and every two adjacent center shafts are detachably connected; the multiple center shafts are respectively arranged corresponding to the multiple coil springs, and each coil spring is sleeved outside the corresponding center shaft.

[0020] In one achievable manner, among every two adjacent central shafts, one of the central shafts is provided with a flattening hole, and the other central shaft is provided with a flattening shaft, and the flattening shaft is inserted into the flattening hole.

[0021] In an achievable manner, the mounting bracket includes a first fixing plate and a second fixing plate, and the first fixing plate and the second fixing plate are respectively arranged corresponding to opposite ends of the reel;

[0022] The roller blind also includes a mounting member, which is connected to one end of the reel and rotatably connected to the first fixed plate; the energy storage device is arranged in the other end of the reel, and the fixed shaft is fixed to the second fixed plate.

[0023] The rolling shutter provided by the present invention has a rotating frame configured as a structure in which a plurality of sub-brackets are detachably connected, and a coil spring is disposed between each two adjacent sub-brackets. When the number of coil springs changes, a corresponding number of sub-brackets can be selected according to the number of coil springs to assemble and form a rotating frame, that is, different numbers of sub-brackets can be selectively assembled according to different rolling shutter products, and there is no need to separately design the rotating frame according to the requirements of different rolling shutter products, thereby improving the versatility of the rotating frame and reducing the design and production costs of the rotating frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of the roller blind in an embodiment of the present invention.

[0025] Figure 2 for Figure 1 Schematic diagram of the explosion structure.

[0026] Figure 3Schematic diagram of the structure of the energy storage device in an embodiment of the present invention.

[0027] Figure 4 for Figure 3 Schematic diagram of the explosion structure.

[0028] Figure 5 for Figure 4 Schematic diagram of the explosion structure after further decomposition.

[0029] Figure 6 for Figure 5 Schematic diagram of the explosion structure of the rotating frame.

[0030] Figure 7 for Figure 6 Bottom view of .

[0031] Figure 8 for Figure 5 Schematic diagram of the exploded structure of the fixed shaft.

[0032] Fig. 9 for Figure 8 Schematic diagram of the structure in another direction.

[0033] Fig.10 Schematic diagram of a cross-section of an energy storage device in an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] The terms "first", "second", "third", "fourth" and the like (if any) in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a particular sequence or order.

[0036] The directional words such as up, down, left, right, front, back, top, bottom, etc. (if any) involved in the specification and claims of the present invention are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, and are only for the clarity and convenience of expressing the technical solution. It should be understood that the use of directional words should not limit the scope of protection claimed in the present invention.

[0037] like Figures 1 to 10 As shown, the rolling shutter provided by an embodiment of the present invention includes a mounting bracket 1, a reel 2, a curtain 3 and an energy storage device M; the mounting bracket 1 is used to install the rolling shutter to a desired position, the reel 2 is rotatably connected to the mounting bracket 1, one end of the curtain 3 is fixedly connected to the reel 2, and the curtain 3 can be wound on the reel 2.

[0038] The reel 2 is a hollow rod-shaped structure, and the energy storage device M is arranged inside the reel 2. The energy storage device M includes a rotating frame 4, a fixed shaft 5, and a plurality of coil springs 6 (the number of coil springs 6 can be one or more according to different product requirements). The fixed shaft 5 is fixed to the mounting bracket 1, that is, the fixed shaft 5 is fixed with the mounting bracket 1. The rotating frame 4 is sleeved outside the fixed shaft 5, and the rotating frame 4 is fixed to the reel 2, and the rotating frame 4 can rotate relative to the fixed shaft 5 together with the reel 2.

[0039] The rotating frame 4 includes a plurality of sub-brackets 40, which are sequentially arranged along the axial direction of the fixed shaft 5, and each two adjacent sub-brackets 40 are detachably connected, and each two adjacent sub-brackets 40 are fixed along their circumferential direction (that is, each two adjacent sub-brackets 40 will not rotate relative to each other). Each sub-bracket 40 is provided with an axial hole 400, and the fixed shaft 5 passes through the axial hole 400 of each sub-bracket 40.

[0040] The coil spring 6 is sleeved outside the fixed shaft 5 and is disposed between each two adjacent sub-brackets 40 ; the inner end 6A of the coil spring 6 is connected to the fixed shaft 5 , and the outer end 6B of the coil spring 6 is connected to the sub-bracket 40 .

[0041] Specifically, since the curtain 3 is fixedly connected to the reel 2, when the curtain 3 moves up and down, the reel 2 will rotate with the up and down movement of the curtain 3; when the curtain 3 moves upward, the curtain 3 will be continuously wound on the reel 2, thereby causing the curtain 3 to rise (i.e., the height of the bottom end of the curtain 3 becomes larger); when the curtain 3 moves downward, the curtain 3 will be continuously unwound from the reel 2, thereby causing the curtain 3 to fall (i.e., the height of the bottom end of the curtain 3 decreases).

[0042] At the same time, since the rotating frame 4 is fixed to the reel 2, when the reel 2 rotates, the rotating frame 4 can rotate relative to the fixed shaft 5 along with the reel 2; since the inner end 6A and the outer end 6B of the coil spring 6 are respectively connected to the fixed shaft 5 and the sub-bracket 40 in the rotating frame 4, when the rotating frame 4 rotates, it can drive the coil spring 6 to undergo elastic deformation, causing the torsional force and stored elastic potential energy of the coil spring 6 to change. Specifically, when the curtain 3 moves downward, the rotating frame 4 rotates in a certain direction following the winding shaft 2. At this time, the winding spring 6 is tightened and stored, and the torsional force and elastic potential energy of the winding spring 6 increase. When the curtain 3 stops moving downward, the curtain 3 can hover under the torsional force of the winding spring 6, that is, the curtain 3 stays in the current position (because the weight of the hanging curtain 3 continues to increase, the torsional force of the winding spring 6 also continues to increase, and the two can reach a balance); when the curtain 3 moves upward, the rotating frame 4 rotates in another opposite direction following the winding shaft 2. At this time, the winding spring 6 continuously relaxes and releases the elastic force, and the curtain 3 moves upward under the torsional force of the winding spring 6 and the external thrust (for example, the user pushes the curtain 3 upward with his hand), and when the curtain 3 stops moving upward, the curtain 3 can hover under the torsional force of the winding spring 6 (because the weight of the hanging curtain 3 continues to decrease, the torsional force of the winding spring 6 also continues to decrease, and the two can reach a balance). Therefore, when the model of the roller blind is different and the size / weight of the curtain fabric 3 is different, the number of coil springs 6 may change accordingly to match different roller blind products.

[0043] The rolling shutter provided by the embodiment of the present invention is realized by configuring the rotating frame 4 to have a structure in which a plurality of sub-brackets 40 are detachably connected, that is, configuring the rotating frame 4 to be a disconnected structure, and configuring the coil springs 6 between each adjacent two sub-brackets 40. When the number of coil springs 6 changes, a corresponding number of sub-brackets 40 can be selected according to the number of coil springs 6 to assemble and form the rotating frame 4. That is, different numbers of sub-brackets 40 can be selectively assembled according to different rolling shutter products, and there is no need to separately design the rotating frame 4 according to the requirements of different rolling shutter products, thereby improving the versatility of the rotating frame 4 and reducing the design and manufacturing cost of the rotating frame 4 (the sub-brackets 40 of the conventional rotating frame 4 are an integrated structure. If the size of the rotating frame 4 is too large, that is, the number of sub-brackets 40 is too large, when the number of coil springs 6 is small, the rotating frame 4 will have empty spaces, which will cause waste of the rotating frame 4; if the size of the rotating frame 4 is too small, that is, the number of sub-brackets 40 is too small, when the number of coil springs 6 is large, the rotating frame 4 cannot provide enough empty spaces, and the rotating frame 4 needs to be redesigned and manufactured).

[0044] like Figures 3 to 7As shown, as an embodiment, each sub-bracket 40 includes a main body 41 and an arm 42 disposed on the main body 41, the arm 42 and the main body 41 are an integral structure, and the arm 42 extends along the axial direction of the fixed shaft 5 (specifically, one end of the arm 42 is connected to the main body 41, and the other end of the arm 42 extends along the axial direction of the fixed shaft 5). The shaft hole 400 is disposed on the main body 41, and the shaft hole 400 is specifically disposed at the center position of the main body 41, and the fixed shaft 5 passes through the main body 41 of each sub-bracket 40 (that is, the fixed shaft 5 passes through the shaft hole 400 on the main body 41 of each sub-bracket 40).

[0045] The main bodies 41 of each two adjacent sub-brackets 40 are spaced apart along the axial direction of the fixed shaft 5, and the arm rods 42 of each two adjacent sub-brackets 40 are detachably connected. The coil spring 6 is disposed between the main bodies 41 of each two adjacent sub-brackets 40, and the outer end 6B of the coil spring 6 is connected to the arm rod 42.

[0046] like Figures 3 to 7 As shown, as an embodiment, the arm 42 is arranged at the side of the main body 41; along the axial direction of the fixed shaft 5, at least one side of each sub-bracket 40 is provided with a plurality of arm 42, and the plurality of arm 42 are arranged at intervals along the circumference of the main body 41;

[0047] In each of two adjacent sub-brackets 40, the multiple arms 42 on one sub-bracket 40 are detachably connected to the multiple arms 42 on the other sub-bracket 40. By providing multiple arms 42 to connect adjacent sub-brackets 40, the connection strength and connection stability between the sub-brackets 40 can be improved.

[0048] Specifically, in this embodiment, at least one side of each sub-bracket 40 is provided with two arm rods 42, and the two arm rods 42 are respectively located on opposite sides of the main body 41. Of course, in other embodiments, the number of arm rods 42 can be more.

[0049] like Figures 3 to 7 As shown, as an implementation mode, the main bodies 41 and the arm rods 42 of each two adjacent sub-brackets 40 enclose a receiving cavity 401 , and the coil spring 6 is located in the receiving cavity 401 .

[0050] like Figures 3 to 7As shown, as an embodiment, the arms 42 of each two adjacent sub-brackets 40 are fixed by snap connection. Specifically, in this embodiment, among each two adjacent sub-brackets 40, a snap slot 43 is provided on the arm 42 of one sub-bracket 40 (specifically, the snap slot 43 is provided at the end of the arm 42), and a snap block 44 is provided on the arm 42 of the other sub-bracket 40 (specifically, the snap block 44 is provided at the end of the arm 42), and the snap block 44 is snapped in the snap slot 43, thereby realizing the snap connection and fixation of the two adjacent sub-brackets 40. Of course, in other embodiments, the arms 42 of the two adjacent sub-brackets 40 can also be detachably connected by other means (for example, by screw connection, etc.).

[0051] like Figures 3 to 7 As shown, as an embodiment, the plurality of sub-brackets 40 include a first sub-bracket 40A and a plurality of second sub-brackets 40B, and the first sub-bracket 40A is located at the outermost side of the plurality of sub-brackets 40. The arm 42 on the first sub-bracket 40A is arranged on one side of the main body 41 of the first sub-bracket 40A close to the second sub-bracket 40B (i.e., the arm 42 is arranged on only one side of the first sub-bracket 40A), and the arm 42 on the second sub-bracket 40B is arranged on opposite sides of the main body 41 of the second sub-bracket 40B (i.e., the arm 42 is arranged on opposite sides of the second sub-bracket 40B). The structures of the second sub-brackets 40B are the same, i.e., the second sub-brackets 40B are repeated units. With such arrangement, during manufacturing, according to the number of coil springs 6, a first sub-bracket 40A and a plurality of second sub-brackets 40B can be assembled to form a rotating frame 4, thereby facilitating assembly; and, since the second sub-bracket 40B is a repeated unit, the production difficulty can be reduced and the production cost can be saved.

[0052] Specifically, in this embodiment, the number of coil springs 6 is two, the number of sub-brackets 40 is three, and the three sub-brackets 40 include a first sub-bracket 40A and two second sub-brackets 40B, the first sub-bracket 40A and the two second sub-brackets 40B are connected in sequence, and the two coil springs 6 are respectively arranged between the first sub-bracket 40A and the first second sub-bracket 40B and the first second sub-bracket 40B and the second second sub-bracket 40B. Of course, in other embodiments, when the number of coil springs 6 changes, the number of sub-brackets 40 also changes accordingly. For example, when the number of coil springs 6 is one, only two sub-brackets 40 (i.e., a first sub-bracket 40A and a second sub-bracket 40B) need to be arranged; when the number of coil springs 6 is three, four sub-brackets 40 (i.e., a first sub-bracket 40A and three second sub-brackets 40B) need to be arranged.

[0053] like Figures 1 to 7As shown, as an embodiment, the reel 2 is cylindrical, and a groove 21 is provided on the outer wall of the reel 2, and one end of the curtain 3 is fixed in the groove 21. A protrusion 22 protruding inward is formed at a position corresponding to the groove 21 on the reel 2, and a first limiting groove 46 matching the shape and size of the protrusion 22 is provided on the main body 41 of each sub-bracket 40, and the protrusion 22 is engaged with the first limiting groove 46, so that after the energy storage device M is installed in the reel 2, the rotating frame 4 is fixed to the reel 2 along its circumferential direction.

[0054] like Figures 3 to 10 As shown, as an embodiment, the fixed shaft 5 includes a shaft head 51 and a shaft rod 52 connected to the shaft head 51, and the shaft head 51 is fixed to the mounting bracket 1. A rotation groove 45 is provided on the side of the main body 41 of the first sub-bracket 40A away from the second sub-bracket 40B, and the shaft head 51 is located in the rotation groove 45, so that the rotating frame 4 can rotate more stably relative to the fixed shaft 5. The shaft rod 52 passes through the shaft hole 400 of each sub-bracket 40, specifically, the shaft rod 52 passes through the main body 41 of the first sub-bracket 40A and the main body 41 of each second sub-bracket 40B in turn; the coil spring 6 is sleeved outside the shaft rod 52, and the inner end 6A of the coil spring 6 is connected to the shaft rod 52.

[0055] Specifically, in this embodiment, the main body 41 of the first sub-bracket 40A is cylindrical, the shaft hole 400 on the first sub-bracket 40A is arranged on the side of the cylindrical main body 41 close to the second sub-bracket 40B, and the rotation groove 45 is arranged on the side of the cylindrical main body 41 away from the second sub-bracket 40B; the outer diameter of the cylindrical main body 41 matches the inner diameter of the reel 2, so that the cylindrical main body 41 can be firmly fixed in the reel 2. The main body 41 of the second sub-bracket 40B is disc-shaped, and the outer diameter of the disc-shaped main body 41 matches the inner diameter of the reel 2, so that the disc-shaped main body 41 can be firmly fixed in the reel 2.

[0056] like Figures 2 to 5 As shown, as an embodiment, the inner end 6A of the coil spring 6 is fixedly connected to the shaft rod 52 by a screw (not shown), and the outer end 6B of the coil spring 6 is bent to form a hook portion 61, and the hook portion 61 is hung on the arm rod 42 (specifically, the hook portion 61 is hung on the arm rod 42 of two adjacent sub-brackets 40), and the hook portion 61 is clamped between the arm rod 42 and the inner wall of the reel 2, so that the hook portion 61 is fixed to the arm rod 42 (of course, in other embodiments, the hook portion 61 can also be fixed to the arm rod 42 by other means).

[0057] like Figures 5 to 10As shown, as an embodiment, the number of coil springs 6 is multiple. The shaft 52 includes multiple central shafts 520, and the multiple central shafts 520 are sequentially arranged along the axial direction of the fixed shaft 5, one of the central shafts 520 is fixedly connected to the shaft head 51 (the two are specifically an integrated structure), and each two adjacent central shafts 520 are detachably connected; the multiple central shafts 520 are respectively arranged corresponding to the multiple coil springs 6 (that is, each central shaft 520 is respectively arranged corresponding to each accommodating cavity 401), each coil spring 6 is sleeved outside the corresponding central shaft 520, and the inner end 6A of each coil spring 6 is connected to the corresponding central shaft 520.

[0058] Specifically, by setting the shaft 52 as a plurality of detachably connected central shafts 520, that is, setting the shaft 52 as a disconnectable structure, different numbers of central shafts 520 can be set according to the rotating frame 4 of different lengths (that is, the number of central shafts 520 is adjusted according to the number of sub-brackets 40), and then changing the length of the shaft 52, so as to achieve the purpose of saving costs and reducing the space occupied by the shaft 52. In this embodiment, the number of coil springs 6 is two, and the shaft 52 includes two central shafts 520, and the two central shafts 520 correspond to the two coil springs 6 respectively; of course, in other embodiments, the number of coil springs 6 and the central shaft 520 can also be more. Of course, when the number of coil springs 6 is one, since only one central shaft 520 needs to be set, the shaft 52 does not need to be set as a disconnectable structure at this time.

[0059] Of course, in other embodiments, the entire shaft 52 may also be an integrated structure.

[0060] like Figures 8 to 10 As shown, as an embodiment, among every two adjacent center shafts 520, one of the center shafts 520 is provided with a flat hole 521 (the flat hole 521 is specifically arranged at the end of the center shaft 520), and the other center shaft 520 is provided with a flat shaft 522 (the flat shaft 522 is specifically arranged at the end of the center shaft 520), and the flat shaft 522 matches the shape and size of the flat hole 521, and the flat shaft 522 is inserted into the flat hole 521 to realize the connection between the two adjacent center shafts 520 and to fix the two adjacent center shafts 520 in the circumferential direction (that is, the two will not rotate relative to each other).

[0061] Specifically, in this embodiment, the center axis 520 connected to the shaft head 51 is provided with a flattened hole 521 (or a flattened shaft 522) at only one end, and the other two ends of the center axis 520 are provided with a flattened hole 521 and a flattened shaft 522 respectively (that is, it is a repeating unit).

[0062] like Figures 1 to 8As shown, as an embodiment, the mounting bracket 1 includes a first fixing plate 11 and a second fixing plate 12, and the first fixing plate 11 and the second fixing plate 12 are respectively arranged corresponding to the opposite ends of the reel 2. The roller blind also includes a mounting member 7, which is connected to one end of the reel 2, and the mounting member 7 is rotatably connected to the first fixing plate 11. The energy storage device M is arranged in the other end of the reel 2, and the fixed shaft 5 is fixed to the second fixing plate 12 (that is, the opposite ends of the reel 2 are rotatably connected to the first fixing plate 11 and the second fixing plate 12 through the mounting member 7 and the energy storage device M).

[0063] Specifically, in this embodiment, a second limiting groove 72 is provided at one end of the mounting member 7 close to the reel 2, and the second limiting groove 72 matches the shape and size of the protrusion 22. One end of the mounting member 7 is inserted into the reel 2, and the second limiting groove 72 is engaged with the protrusion 22, so that the mounting member 7 is fixed to the reel 2; a rotation hole 111 is provided on the first fixing plate 11, and a pin 71 is provided on the mounting member 7. The pin 71 is inserted into the rotation hole 111 and can rotate in the rotation hole 111 to realize the rotation connection between the mounting member 7 and the first fixing plate 11. At the same time, the pin 71 can also be axially retracted relative to the mounting member 7 to facilitate the assembly of the reel 2 and the mounting bracket 1.

[0064] A clamping hole 511 is provided on the shaft head 51 of the fixed shaft 5, and the clamping hole 511 can be a "1-shaped", "cross-shaped", "M-shaped" or other structures; a clamping piece 121 is provided on the second fixed plate 12, and the clamping piece 121 is specifically formed by cutting and then bending the second fixed plate 12. The clamping piece 121 is inserted into and clamped in the clamping hole 511, so that the fixed shaft 5 is fixed to the second fixed plate 12 along its circumferential direction.

[0065] like Figure 1 and Figure 2 As shown, as an embodiment, the mounting bracket 1 further includes a connecting rod 13 , and opposite ends of the connecting rod 13 are fixedly connected to the first fixing plate 11 and the second fixing plate 12 , respectively.

[0066] like Figure 1 and Figure 2 As shown, as an embodiment, the rolling curtain further includes a lower curtain rod 8, in which a rotating shaft 81 is provided, and the rotating shaft 81 is rotatably connected to the lower curtain rod 8. One end of the curtain 3 is fixedly connected to the rolling shaft 2, and the other end of the curtain 3 is fixedly connected to the connecting rod 13 after passing the rotating shaft 81. In this way, the curtain 3 forms a double-sided (i.e., double-layer) structure, thereby improving the functions of the curtain 3 such as heat insulation, sun protection, and aesthetics.

[0067] Specifically, in this embodiment, the curtain 3 has a first surface 31 and a second surface 32 opposite to each other, the top of the first surface 31 is fixedly connected to the reel 2, the top of the second surface 32 is fixedly connected to the connecting rod 13, and the bottom of the first surface 31 is integrally connected to the bottom of the second surface 32. When the lower curtain rod 8 is pulled downward, the first surface 31 is unwound from the reel 2, and the heights of the first surface 31 and the second surface 32 are simultaneously reduced, so that the curtain 3 is drooped downward; when the lower curtain rod 8 is pushed upward, the first surface 31 is automatically reeled onto the reel 2 under the torsion of the winding spring 6, and the heights of the first surface 31 and the second surface 32 are simultaneously increased, so that the curtain 3 is folded upward. Of course, in other embodiments, the curtain 3 can also be a single-sided (i.e., single-layer) structure, in which case the upper end of the curtain 3 is fixedly connected to the reel 2, and the lower end of the curtain 3 is fixedly connected to the lower curtain rod 8.

[0068] The rolling shutter provided in the embodiment of the present invention arranges the rotating frame 4 into a structure in which a plurality of sub-brackets 40 are detachably connected, that is, the rotating frame 4 is arranged into a disconnected structure, and the coil springs 6 are arranged between each two adjacent sub-brackets 40. When the number of coil springs 6 changes, a corresponding number of sub-brackets 40 can be selected according to the number of coil springs 6 to assemble and form the rotating frame 4, that is, different numbers of sub-brackets 40 are selectively assembled according to different rolling shutter products, and there is no need to separately design the rotating frame 4 according to the requirements of different rolling shutter products, thereby improving the versatility of the rotating frame 4 and reducing the design and manufacturing costs of the rotating frame 4.

[0069] At the same time, by setting the shaft 52 as a plurality of detachably connected central shafts 520, that is, setting the shaft 52 as a disconnected structure, different numbers of central shafts 520 can be set according to the rotating frame 4 of different lengths, thereby changing the length of the shaft 52, so as to achieve the purpose of saving costs and reducing the space occupied by the shaft 52.

[0070] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A rolling blind, characterized in that: It comprises a mounting bracket (1), a reel (2), a curtain (3) and an energy storage device (M), wherein one end of the curtain (3) is fixedly connected to the reel (2), and the curtain (3) can be wound on the reel (2); The energy storage device (M) is arranged in the reel (2), and comprises a rotating frame (4), a fixed shaft (5) and a plurality of coil springs (6), wherein the fixed shaft (5) is fixed to the mounting bracket (1); the rotating frame (4) is sleeved outside the fixed shaft (5), the rotating frame (4) is fixed to the reel (2), and the rotating frame (4) can rotate relative to the fixed shaft (5) along with the reel (2); The rotating frame (4) comprises a plurality of sub-supports (40), the plurality of sub-supports (40) being arranged in sequence along the axial direction of the fixed shaft (5), and each two adjacent sub-supports (40) being detachably connected; each sub-support (40) is provided with an axial hole (400), and the fixed shaft (5) passes through the axial hole (400) of each sub-support (40); The coil spring (6) is sleeved outside the fixed shaft (5), and the coil spring (6) is arranged between each two adjacent sub-brackets (40); the inner end (6A) of the coil spring (6) is connected to the fixed shaft (5), and the outer end (6B) of the coil spring (6) is connected to the sub-bracket (40).

2. The roller blind according to claim 1, characterized in that: Each of the sub-brackets (40) comprises a main body (41) and an arm (42) arranged on the main body (41), wherein the arm (42) extends along the axial direction of the fixed shaft (5); the shaft hole (400) is arranged on the main body (41), and the fixed shaft (5) passes through the main body (41) of each of the sub-brackets (40); The main bodies (41) of each two adjacent sub-brackets (40) are arranged at intervals along the axial direction of the fixed axis (5), and the arm rods (42) of each two adjacent sub-brackets (40) are detachably connected; the coil spring (6) is arranged between the main bodies (41) of each two adjacent sub-brackets (40), and the outer end (6B) of the coil spring (6) is connected to the arm rod (42).

3. The roller blind according to claim 2, characterized in that: The main bodies (41) and arm rods (42) of each two adjacent sub-brackets (40) enclose a receiving cavity (401), and the coil spring (6) is located in the receiving cavity (401).

4. The roller blind according to claim 2, characterized in that: In each of two adjacent sub-brackets (40), a slot (43) is provided on the arm (42) of one of the sub-brackets (40), and a block (44) is provided on the arm (42) of the other sub-bracket (40), and the block (44) is locked in the slot (43).

5. The roller blind according to claim 2, characterized in that: The arm rod (42) is arranged at a side position of the main body (41); at least one side of each sub-bracket (40) is provided with a plurality of the arm rods (42), and the plurality of the arm rods (42) are arranged at intervals along the circumference of the main body (41); In each of two adjacent sub-brackets (40), a plurality of arm rods (42) on one of the sub-brackets (40) are detachably connected to a plurality of arm rods (42) on the other of the sub-brackets (40).

6. The roller blind according to claim 2, characterized in that: The plurality of sub-brackets (40) include a first sub-bracket (40A) and a plurality of second sub-brackets (40B), wherein the first sub-bracket (40A) is located at the outermost side of the plurality of sub-brackets (40); the arm (42) on the first sub-bracket (40A) is arranged on a side of the main body (41) of the first sub-bracket (40A) close to the second sub-bracket (40B), and the arm (42) on the second sub-bracket (40B) is arranged on opposite sides of the main body (41) of the second sub-bracket (40B).

7. The roller blind according to claim 6, characterized in that: The fixed shaft (5) comprises a shaft head (51) and a shaft rod (52) connected to the shaft head (51), and the shaft head (51) is fixed to the mounting bracket (1); a rotation groove (45) is provided on a side of the main body (41) of the first sub-bracket (40A) away from the second sub-bracket (40B), and the shaft head (51) is located in the rotation groove (45), and the shaft rod (52) passes through the main body (41) of the first sub-bracket (40A) and the main body (41) of each of the second sub-brackets (40B) in sequence.

8. The roller blind according to any one of claims 1 to 7, characterized in that: The fixed shaft (5) comprises a shaft rod (52), the shaft rod (52) passes through the shaft hole (400) of each of the sub-brackets (40), the coil spring (6) is sleeved outside the shaft rod (52), and the inner end (6A) of the coil spring (6) is connected to the shaft rod (52); The number of the coil springs (6) is multiple; the shaft (52) includes multiple center shafts (520), the multiple center shafts (520) are arranged in sequence along the axial direction of the fixed shaft (5), and every two adjacent center shafts (520) are detachably connected; the multiple center shafts (520) are respectively arranged corresponding to the multiple coil springs (6), and each coil spring (6) is sleeved outside the corresponding center shaft (520).

9. The roller blind according to claim 8, characterized in that: Among every two adjacent central shafts (520), one of the central shafts (520) is provided with a flattening hole (521), and the other central shaft (520) is provided with a flattening shaft (522), and the flattening shaft (522) is inserted into the flattening hole (521).

10. The roller blind according to any one of claims 1 to 7, characterized in that: The mounting bracket (1) comprises a first fixing plate (11) and a second fixing plate (12), wherein the first fixing plate (11) and the second fixing plate (12) are respectively arranged corresponding to the opposite ends of the reel (2); The rolling shutter further comprises a mounting member (7), wherein the mounting member (7) is connected to one end of the rolling shaft (2), and the mounting member (7) is rotationally connected to the first fixed plate (11); the energy storage device (M) is arranged in the other end of the rolling shaft (2), and the fixed shaft (5) is fixed to the second fixed plate (12).

Images