Roller shutter

Abstract

The utility model provides a roller shutter which comprises an installation support, a rolling shaft, curtain cloth and an energy storage device, and one end of the curtain cloth is fixedly connected with the rolling shaft. 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] This utility model relates to the field of roller blind structure technology, and in particular to a roller blind. Background Technology

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

[0003] To facilitate the raising, lowering, and stopping of roller blinds, an energy storage device is generally installed in the roller blind. For example, a roller blind device with a telescopic tube disclosed in patent CN210918830U includes a telescopic tube and a roller blind assembly. The roller blind assembly includes an energy storage component and a curtain surface, which is connected to the telescopic tube. The energy storage component includes an elastic element, a fixed rod, and a rotating bracket. The fixed end and the extended end of the elastic element are fixedly connected to the fixed rod and the rotating bracket, respectively. The rotating bracket can rotate relative to the fixed rod along with the telescopic tube, so that the elastic element undergoes elastic deformation and stores energy during the raising and lowering of the curtain surface, thereby achieving the stopping of the curtain surface and facilitating the raising and lowering of the curtain surface.

[0004] However, the number of elastic elements required in the energy storage device may vary depending on the roller blind product (due to differences in curtain weight), thus necessitating different lengths for the rotating bracket. Since the rotating bracket in current roller blinds is a single, integrated structure, different sizes of rotating brackets need to be designed and manufactured for each product, increasing production costs. Utility Model Content

[0005] The purpose of this utility model is to provide a roller blind that, by designing the rotating frame as a detachable structure, allows for the selective assembly of different numbers of sub-supports according to different roller blind products. This eliminates the need to design a separate rotating frame for each roller blind product, thereby improving the versatility of the rotating frame and reducing its design and manufacturing costs.

[0006] This utility model provides a roller blind, including a mounting bracket, a roller shaft, a curtain fabric and an energy storage device, wherein one end of the curtain fabric is fixedly connected to the roller shaft and the curtain fabric can be wound on the roller shaft;

[0007] The energy storage device is disposed inside the reel. The energy storage device includes a rotating frame, a fixed shaft, and several coil springs. The fixed shaft is fixed to the mounting bracket. The rotating frame is sleeved outside the fixed shaft and is fixed to the reel. The rotating frame can rotate relative to the fixed shaft along with the reel.

[0008] The rotating frame includes multiple sub-supports, which are arranged sequentially along the axial direction of the fixed shaft, and each pair of adjacent sub-supports are detachably connected; each sub-support is provided with a shaft hole, and the fixed shaft passes through the shaft hole of each sub-support.

[0009] The coil spring is sleeved outside the fixed shaft, and the coil spring is disposed between each of two adjacent sub-supports; 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-support.

[0010] In one possible implementation, each of the sub-supports includes a main body and an arm disposed on the main body, the arm extending axially along the fixed shaft; a shaft hole is disposed on the main body, and the fixed shaft passes through the main body of each of the sub-supports;

[0011] The main body portions of each pair of adjacent sub-supports are spaced apart along the axial direction of the fixed axis, and the arms of each pair of adjacent sub-supports are detachably connected; the coil spring is disposed between the main body portions of each pair of adjacent sub-supports, and the outer end of the coil spring is connected to the arm.

[0012] In one possible implementation, a receiving cavity is formed between the main body and arm of each two adjacent sub-supports, and the coil spring is located within the receiving cavity.

[0013] In one possible implementation, in every two adjacent sub-supports, one sub-support has a slot on its arm and the other sub-support has a block on its arm, the block being engaged in the slot.

[0014] In one possible implementation, the boom is located on the side of the main body; each sub-support has a plurality of booms on at least one side, and the plurality of booms are spaced apart circumferentially along the main body;

[0015] In each pair of adjacent sub-supports, a plurality of arms on one sub-support are detachably connected to a plurality of arms on the other sub-support.

[0016] In one possible implementation, the plurality of sub-supports includes a first sub-support and a plurality of second sub-supports, the first sub-support being located on the outermost side of the plurality of sub-supports; the arm on the first sub-support is disposed on the main body of the first sub-support near the side of the second sub-support, and the arms on the second sub-supports are disposed on opposite sides of the main body of the second sub-support.

[0017] In one possible implementation, the fixed shaft includes a shaft head and a shaft rod connected to the shaft head, the shaft head being fixed to the mounting bracket; a rotating groove is provided on the main body of the first sub-bracket on the side away from the second sub-bracket, the shaft head is located in the rotating 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 sequence.

[0018] In one possible implementation, the fixed shaft includes a shaft that passes through the shaft holes of each of the sub-supports, and a coil spring is sleeved on the outside of the shaft, with the inner end of the coil spring connected to the shaft.

[0019] The number of coil springs is multiple; the shaft includes multiple central shafts, which are arranged sequentially along the axial direction of the fixed shaft, and each pair of adjacent central shafts are detachably connected; the multiple central shafts are respectively arranged for multiple coil springs, and each coil spring is sleeved on the corresponding central shaft.

[0020] In one feasible manner, in every two adjacent central shafts, one of the central shafts has a flat hole and the other central shaft has a flat shaft inserted into the flat hole.

[0021] In one possible implementation, the mounting bracket includes a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate being respectively disposed at opposite ends of the roll;

[0022] The roller blind also includes an installation component, which is connected to one end of the roller shaft and is rotatably connected to the first fixing plate; the energy storage device is disposed inside the other end of the roller shaft, and the fixing shaft is fixed to the second fixing plate.

[0023] The roller blind provided by this utility model sets the rotating frame as a structure in which multiple sub-supports can be detachably connected, and sets the coil springs between each pair of adjacent sub-supports. When the number of coil springs changes, the corresponding number of sub-supports can be selected to assemble the rotating frame according to the number of coil springs. That is, different numbers of sub-supports can be selectively assembled according to different roller blind products, without the need to design the rotating frame separately according to the needs of different roller blind products, which improves the versatility of the rotating frame and reduces the design and manufacturing cost of the rotating frame. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the roller blind in an embodiment of this utility model.

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

[0026] Figure 3 This is a schematic diagram of the energy storage device in an embodiment of the present invention.

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

[0028] Figure 5 for Figure 4 A schematic diagram of the exploded structure after further decomposition.

[0029] Figure 6 for Figure 5 Exploded view of the rotating frame.

[0030] Figure 7 for Figure 6 A bottom view.

[0031] Figure 8 for Figure 5 A schematic diagram of the exploded structure of the fixed axis.

[0032] Figure 9 for Figure 8 A structural diagram in another direction.

[0033] Figure 10 This is a cross-sectional schematic diagram of the energy storage device in an embodiment of this utility model. Detailed Implementation

[0034] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0035] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0036] The directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" (if present) used in the specification and claims of this utility model are defined according to the position of the structures in the drawings and the relative positions of the structures, and are only for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed by this utility model.

[0037] like Figures 1 to 10 As shown, the roller blind provided in this embodiment of the utility model includes a mounting bracket 1, a roller 2, a curtain 3, and an energy storage device M; the mounting bracket 1 is used to install the roller blind to the required position, the roller 2 is rotatably connected to the mounting bracket 1, one end of the curtain 3 is fixedly connected to the roller 2, and the curtain 3 can be rolled up on the roller 2.

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

[0039] The rotating frame 4 includes multiple sub-supports 40, which are arranged sequentially along the axial direction of the fixed shaft 5. Each pair of adjacent sub-supports 40 is detachably connected and fixed to each other circumferentially (i.e., each pair of adjacent sub-supports 40 will not rotate relative to each other). Each sub-support 40 is provided with a shaft hole 400, through which the fixed shaft 5 passes.

[0040] The coil spring 6 is sleeved outside the fixed shaft 5 and is located between two adjacent sub-supports 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-support 40.

[0041] Specifically, since the curtain 3 is fixedly connected to the roller 2, when the curtain 3 moves up and down, the roller 2 will rotate along with the up and down movement of the curtain 3; when the curtain 3 moves upward, the curtain 3 will continuously roll onto the roller 2, thereby causing the curtain 3 to rise (i.e., the height of the bottom of the curtain 3 increases); when the curtain 3 moves downward, the curtain 3 will continuously unroll from the roller 2, thereby causing the curtain 3 to fall (i.e., the height of the bottom of the curtain 3 decreases).

[0042] Meanwhile, since the rotating frame 4 is fixed to the scroll 2, when the scroll 2 rotates, the rotating frame 4 can rotate with the scroll 2 relative to the fixed shaft 5. Since the inner end 6A and the outer end 6B of the coil spring 6 are connected to the fixed shaft 5 and the sub-support 40 in the rotating frame 4 respectively, when the rotating frame 4 rotates, it can drive the coil spring 6 to undergo elastic deformation, causing the torque 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 along with the roller 2. At this time, the coil spring 6 tightens and stores force, increasing the torque and elastic potential energy of the coil spring 6. When the curtain 3 stops moving downward, it can be suspended under the torque of the coil spring 6, that is, the curtain 3 stays in the current position (as the weight of the hanging curtain 3 continuously increases, the torque of the coil spring 6 also continuously increases, and the two can reach a balance). When the curtain 3 moves upward, the rotating frame 4 rotates in the opposite direction along with the roller 2. At this time, the coil spring 6 continuously relaxes and releases its elastic force. The curtain 3 moves upward under the torque of the coil spring 6 and the external pushing force (such as the user pushing the curtain 3 upward by hand). When the curtain 3 stops moving upward, it can be suspended under the torque of the coil spring 6 (as the weight of the hanging curtain 3 continuously decreases, the torque of the coil spring 6 also continuously decreases, and the two can reach a balance). Therefore, when the roller blind model and the size / weight of the curtain 3 are different, the number of springs 6 may vary to match different roller blind products.

[0043] The roller blind provided in this embodiment of the utility model is configured as a structure in which the rotating frame 4 is detachably connected to multiple sub-supports 40, that is, the rotating frame 4 is configured as a disconnectable structure, and the coil springs 6 are set between each two adjacent sub-supports 40. When the number of coil springs 6 changes, the corresponding number of sub-supports 40 can be selected to assemble the rotating frame 4 according to the number of coil springs 6. That is, different numbers of sub-supports 40 can be selectively assembled according to different roller blind products, without the need to design the rotating frame 4 separately according to the needs of different roller blind products, which improves the versatility of the rotating frame 4 and reduces the design and manufacturing cost of the rotating frame 4 (in the traditional rotating frame 4, each sub-support 40 is an integral structure. If the size of the rotating frame 4 is too large, that is, the number of sub-supports 40 is too large, when the number of coil springs 6 is small, there will be empty space in the rotating frame 4, 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-supports 40 is too small, when the number of coil springs 6 is large, the rotating frame 4 cannot provide enough empty space, and the rotating frame 4 needs to be redesigned and manufactured).

[0044] like Figures 3 to 7As shown, in one embodiment, each sub-support 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 integrally formed. The arm 42 extends axially along 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 axially along the fixed shaft 5). A shaft hole 400 is disposed on the main body 41, specifically at the center of the main body 41. The fixed shaft 5 passes through the main body 41 of each sub-support 40 (i.e., the fixed shaft 5 passes through the shaft hole 400 on the main body 41 of each sub-support 40).

[0045] The main body portions 41 of each pair of adjacent sub-supports 40 are spaced apart along the axial direction of the fixed shaft 5, and the arms 42 of each pair of adjacent sub-supports 40 are detachably connected. A coil spring 6 is disposed between the main body portions 41 of each pair of adjacent sub-supports 40, and the outer end 6B of the coil spring 6 is connected to the arm 42.

[0046] like Figures 3 to 7 As shown, in one embodiment, the arm 42 is located on the side of the main body 41; along the axial direction of the fixed shaft 5, each sub-support 40 has a plurality of arms 42 on at least one side, and the plurality of arms 42 are spaced apart circumferentially along the main body 41.

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

[0048] Specifically, in this embodiment, each sub-support 40 has at least two arms 42 on one side, with the two arms 42 located on opposite sides of the main body 41. Of course, in other embodiments, the number of arms 42 can be more.

[0049] like Figures 3 to 7 As shown, in one embodiment, a receiving cavity 401 is formed between the main body 41 and the arm 42 of each two adjacent sub-supports 40, and the coil spring 6 is located in the receiving cavity 401.

[0050] like Figures 3 to 7As shown, in one embodiment, the arms 42 of each pair of adjacent sub-supports 40 are fixed together by a snap-fit ​​connection. Specifically, in this embodiment, in each pair of adjacent sub-supports 40, one sub-support 40 has a slot 43 on its arm 42 (specifically, the slot 43 is located at the end of the arm 42), and the other sub-support 40 has a block 44 on its arm 42 (specifically, the block 44 is located at the end of the arm 42). The block 44 is engaged in the slot 43, thereby achieving the snap-fit ​​fixation of the two adjacent sub-supports 40. Of course, in other embodiments, the arms 42 of the two adjacent sub-supports 40 can also be detachably connected by other means (e.g., by screw connection).

[0051] like Figures 3 to 7 As shown, in one embodiment, the plurality of sub-supports 40 include a first sub-support 40A and several second sub-supports 40B, with the first sub-support 40A located on the outermost side of the plurality of sub-supports 40. An arm 42 on the first sub-support 40A is disposed on the side of the main body 41 of the first sub-support 40A near the second sub-support 40B (i.e., the first sub-support 40A has an arm 42 on only one side), and arms 42 on the second sub-supports 40B are disposed on opposite sides of the main body 41 of the second sub-support 40B (i.e., arms 42 are provided on both opposite sides of the second sub-support 40B). Each second sub-support 40B has the same structure, i.e., the second sub-support 40B is a repeating unit. With this arrangement, during manufacturing, one first sub-support 40A and several second sub-supports 40B can be assembled to form a rotating frame 4 according to the number of coil springs 6, thus facilitating assembly; moreover, since the second sub-supports 40B are repeating units, production difficulty is reduced and production costs are saved.

[0052] Specifically, in this embodiment, there are two coil springs 6 and three sub-supports 40. The three sub-supports 40 include one first sub-support 40A and two second sub-supports 40B, which are connected sequentially. The two coil springs 6 are respectively disposed between the first sub-support 40A and the first second sub-support 40B, and between the first second sub-support 40B and the second second sub-support 40B. Of course, in other embodiments, the number of sub-supports 40 changes when the number of coil springs 6 changes. For example, when there is one coil spring 6, only two sub-supports 40 need to be set (i.e., one first sub-support 40A and one second sub-support 40B); when there are three coil springs 6, four sub-supports 40 need to be set (i.e., one first sub-support 40A and three second sub-supports 40B).

[0053] like Figures 1 to 7As shown, in one embodiment, the spool 2 is cylindrical, and a groove 21 is provided on the outer wall of the spool 2. One end of the curtain 3 is fixed in the groove 21. A protruding part 22 is formed on the spool 2 corresponding to the position of the groove 21. The main body 41 of each sub-support 40 is provided with a first limiting groove 46 that matches the shape and size of the protruding part 22. The protruding part 22 is engaged with the first limiting groove 46, so that after the energy storage device M is installed in the spool 2, the rotating frame 4 is fixed to the spool 2 along its circumference.

[0054] like Figures 3 to 10 As shown, in one embodiment, the fixed shaft 5 includes a shaft head 51 and a shaft rod 52 connected to the shaft head 51. The shaft head 51 is fixed to the mounting bracket 1. A rotating 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. The shaft head 51 is located in the rotating groove 45, thereby enabling the rotating frame 4 to 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 sequence. A coil spring 6 is sleeved on the outside of 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-support 40A is cylindrical, and the shaft hole 400 on the first sub-support 40A is disposed on the side of the cylindrical main body 41 near the second sub-support 40B. The rotating groove 45 is disposed on the side of the cylindrical main body 41 away from the second sub-support 40B. The outer diameter of the cylindrical main body 41 matches the inner diameter of the scroll 2, thereby allowing the cylindrical main body 41 to be stably fixed inside the scroll 2. The main body 41 of the second sub-support 40B is disc-shaped, and the outer diameter of the disc-shaped main body 41 matches the inner diameter of the scroll 2, thereby allowing the disc-shaped main body 41 to be stably fixed inside the scroll 2.

[0056] like Figures 2 to 5 As shown, in one embodiment, the inner end 6A of the coil spring 6 is fixedly connected to the shaft 52 by a screw (not shown), and the outer end 6B of the coil spring 6 is bent to form a hook part 61. The hook part 61 is hooked on the arm 42 (specifically, the hook part 61 is hooked on the arm 42 of two adjacent sub-supports 40), and the hook part 61 is sandwiched between the arm 42 and the inner wall of the coil 2, thereby fixing the hook part 61 to the arm 42 (of course, in other embodiments, the hook part 61 can also be fixed to the arm 42 in other ways).

[0057] like Figures 5 to 10As shown, in one embodiment, there are multiple coil springs 6. The shaft 52 includes multiple central shafts 520, which are arranged sequentially 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 integral structure), and each pair of adjacent central shafts 520 are detachably connected. The multiple central shafts 520 are respectively arranged corresponding to multiple coil springs 6 (that is, each central shaft 520 is respectively arranged corresponding to each receiving cavity 401). Each coil spring 6 is sleeved on the outside of 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 multiple 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 different lengths of the rotating frame 4 (i.e., the number of central shafts 520 is adjusted according to the number of sub-supports 40), thereby changing the length of the shaft 52, so as to save costs and reduce the space occupied by the shaft 52. In this embodiment, there are two coil springs 6, and the shaft 52 includes two central shafts 520, with each central shaft 520 corresponding to one of the two coil springs 6; of course, in other embodiments, the number of coil springs 6 and central shafts 520 can be more. Of course, when there is only one coil spring 6, since only one central shaft 520 needs to be set, the shaft 52 does not need to be set as a disconnectable structure.

[0059] Of course, in other embodiments, the entire shaft 52 can also be a one-piece structure.

[0060] like Figures 8 to 10 As shown, in one embodiment, in each pair of adjacent central shafts 520, one central shaft 520 is provided with a flat hole 521 (the flat hole 521 is specifically provided at the end of the central shaft 520), and the other central shaft 520 is provided with a flat shaft 522 (the flat shaft 522 is specifically provided at the end of the central shaft 520). The shape and size of the flat shaft 522 match the flat hole 521. The flat shaft 522 is inserted into the flat hole 521 to realize the connection between the two adjacent central shafts 520 and fix the two adjacent central shafts 520 together in the circumferential direction (i.e., the two will not rotate relative to each other).

[0061] Specifically, in this embodiment, the central shaft 520 connected to the shaft head 51 is provided with a flat hole 521 (or flat shaft 522) at only one end, while the other central shafts 520 are provided with a flat hole 521 and a flat shaft 522 at both ends (i.e., they are repeating units).

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

[0063] Specifically, in this embodiment, the mounting member 7 has a second limiting groove 72 at one end near the scroll 2. The shape and size of the second limiting groove 72 match the protrusion 22. One end of the mounting member 7 is inserted into the scroll 2, and the second limiting groove 72 engages with the protrusion 22, thereby fixing the mounting member 7 to the scroll 2. The first fixing plate 11 has a rotating hole 111, and the mounting member 7 has a pin 71. The pin 71 is inserted into the rotating hole 111 and can rotate within the rotating hole 111 to achieve a rotatable connection between the mounting member 7 and the first fixing plate 11. At the same time, the pin 71 can also extend and retract axially relative to the mounting member 7 to facilitate the assembly of the scroll 2 and the mounting bracket 1.

[0064] The shaft head 51 of the fixed shaft 5 is provided with a locking hole 511, which can be a "1-shaped", "cross-shaped", "star-shaped" or other structures; the second fixed plate 12 is provided with a locking piece 121, which is formed by cutting and bending the second fixed plate 12. The locking piece 121 is inserted into and locked in the locking hole 511, thereby fixing the fixed shaft 5 to the second fixed plate 12 along its circumference.

[0065] like Figure 1 and Figure 2 As shown, in one embodiment, the mounting bracket 1 also includes a connecting rod 13, the two ends of which 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, in one embodiment, the roller blind also includes a lower curtain rod 8, with a rotating shaft 81 inside the lower curtain rod 8, which is rotatably connected to the lower curtain rod 8. One end of the curtain fabric 3 is fixedly connected to the roller shaft 2, and the other end of the curtain fabric 3 passes around the rotating shaft 81 and is fixedly connected to the connecting rod 13. This arrangement makes the curtain fabric 3 form a double-sided (i.e., double-layer) structure, thereby improving the heat insulation, sun protection, and aesthetic functions of the curtain fabric 3.

[0067] Specifically, in this embodiment, the curtain 3 has a first side 31 and a second side 32 facing each other. The top end of the first side 31 is fixedly connected to the roller 2, the top end of the second side 32 is fixedly connected to the connecting rod 13, and the bottom end of the first side 31 is integrally connected to the bottom end of the second side 32. When the lower curtain rod 8 is pulled downward, the first side 31 is unrolled from the roller 2, and the height of the first side 31 and the second side 32 decreases simultaneously, realizing the downward hanging of the curtain 3. When the lower curtain rod 8 is pushed upward, the first side 31 automatically rolls back onto the roller 2 under the torque of the coil spring 6, and the height of the first side 31 and the second side 32 increases simultaneously, realizing the upward closing of the curtain 3. 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 roller 2, and the lower end of the curtain 3 is fixedly connected to the lower curtain rod 8.

[0068] The roller blind provided in this embodiment of the utility model is configured as a structure in which the rotating frame 4 is detachably connected to multiple sub-supports 40, that is, the rotating frame 4 is configured as a disconnectable structure, and the coil springs 6 are arranged between each pair of adjacent sub-supports 40. When the number of coil springs 6 changes, the corresponding number of sub-supports 40 can be selected according to the number of coil springs 6 to assemble the rotating frame 4. That is, different numbers of sub-supports 40 can be selectively assembled according to different roller blind products, without the need to design the rotating frame 4 separately according to the needs of different roller blind products, thereby improving the versatility of the rotating frame 4 and reducing the design and manufacturing cost of the rotating frame 4.

[0069] Meanwhile, by setting the shaft 52 as multiple 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 save costs and reduce the space occupied by the shaft 52.

[0070] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A roller blind, characterized in that, It includes a mounting bracket (1), a roller (2), a curtain (3) and an energy storage device (M), one end of the curtain (3) is fixedly connected to the roller (2), and the curtain (3) can be wound around the roller (2); The energy storage device (M) is disposed inside the reel (2). The energy storage device (M) includes a rotating frame (4), a fixed shaft (5), and several coil springs (6). 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). The rotating frame (4) can rotate relative to the fixed shaft (5) along with the reel (2). The rotating frame (4) includes a plurality of sub-supports (40), which are arranged sequentially along the axial direction of the fixed shaft (5), and each pair of adjacent sub-supports (40) are detachably connected; each sub-support (40) is provided with a shaft hole (400), and the fixed shaft (5) passes through the shaft hole (400) of each sub-support (40); The coil spring (6) is sleeved on the outside of the fixed shaft (5), and the coil spring (6) is disposed between each of the two adjacent sub-supports (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-support (40).

2. The roller blind as described in claim 1, characterized in that, Each of the sub-supports (40) includes a main body (41) and an arm (42) disposed on the main body (41), the arm (42) extending axially along the fixed shaft (5); the shaft hole (400) is disposed on the main body (41), and the fixed shaft (5) passes through the main body (41) of each of the sub-supports (40); The main body (41) of each two adjacent sub-supports (40) is spaced apart along the axial direction of the fixed shaft (5), and the arm (42) of each two adjacent sub-supports (40) is detachably connected; the coil spring (6) is disposed between the main body (41) of each two adjacent sub-supports (40), and the outer end (6B) of the coil spring (6) is connected to the arm (42).

3. The roller blind as described in claim 2, characterized in that, Each pair of adjacent sub-supports (40) forms a receiving cavity (401) between the main body (41) and the arm (42), and the coil spring (6) is located in the receiving cavity (401).

4. The roller blind as described in claim 2, characterized in that, In each pair of adjacent sub-supports (40), one of the sub-supports (40) has a slot (43) on its arm (42), and the other sub-support (40) has a block (44) on its arm (42), and the block (44) is engaged in the slot (43).

5. The roller blind as described in claim 2, characterized in that, The arm (42) is located on the side of the main body (41); each sub-support (40) has a plurality of arms (42) on at least one side, and the plurality of arms (42) are spaced apart circumferentially along the main body (41); In each pair of adjacent sub-supports (40), a plurality of arms (42) on one of the sub-supports (40) are detachably connected to a plurality of arms (42) on the other sub-support (40).

6. The roller blind as described in claim 2, characterized in that, The plurality of sub-supports (40) include a first sub-support (40A) and a plurality of second sub-supports (40B), wherein the first sub-support (40A) is located on the outermost side of the plurality of sub-supports (40); the arm (42) on the first sub-support (40A) is disposed on the side of the main body (41) of the first sub-support (40A) near the second sub-support (40B), and the arm (42) on the second sub-support (40B) is disposed on opposite sides of the main body (41) of the second sub-support (40B).

7. The roller blind as described in claim 6, characterized in that, The fixed shaft (5) includes a shaft head (51) and a shaft rod (52) connected to the shaft head (51). The shaft head (51) is fixed to the mounting bracket (1). A rotating 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). The shaft head (51) is located in the rotating groove (45). 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 as described in any one of claims 1-7, characterized in that, The fixed shaft (5) includes a shaft (52) that passes through the shaft hole (400) of each of the sub-supports (40), and a coil spring (6) is sleeved on the outside of the shaft (52), with the inner end (6A) of the coil spring (6) connected to the shaft (52). The number of coil springs (6) is multiple; the shaft (52) includes multiple central shafts (520), which are arranged sequentially along the axial direction of the fixed shaft (5), and each pair of adjacent central shafts (520) are detachably connected; the multiple central shafts (520) are respectively arranged corresponding to multiple coil springs (6), and each coil spring (6) is sleeved on the corresponding central shaft (520).

9. The roller blind as described in claim 8, characterized in that, In each pair of adjacent central shafts (520), one of the central shafts (520) is provided with a flat hole (521), and the other central shaft (520) is provided with a flat shaft (522), the flat shaft (522) being inserted into the flat hole (521).

10. The roller blind as described in any one of claims 1-7, characterized in that, The mounting bracket (1) includes a first fixing plate (11) and a second fixing plate (12), the first fixing plate (11) and the second fixing plate (12) being respectively disposed at opposite ends of the scroll (2); The roller blind also includes an installation component (7), which is connected to one end of the roller (2) and is rotatably connected to the first fixing plate (11); the energy storage device (M) is disposed in the other end of the roller (2), and the fixing shaft (5) is fixed to the second fixing plate (12).

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