A new type of roller blind

Abstract

This utility model discloses a novel roller blind, comprising: an upper box module, which includes a box body, a rollable curtain housed within the box body, and a lower rail assembly connected below the curtain; a left rail module and a right rail module, symmetrically arranged on both sides of the lower end of the box body, each including a vertically arranged side rail with guide channels for the curtain and lower rail to slide. The symmetrically designed left and right rail modules are precisely connected to the upper box module via dedicated connectors. Each side rail module contains a vertically arranged side rail with internal guide channels providing a smooth sliding track for the curtain and lower rail. The left rail module is connected to the left side of the box body via a first connector, while the right rail module is connected to the right side via a second connector. This dedicated connection mechanism ensures the stability and reliability of the overall structure while also facilitating the disassembly and assembly of the entire roller blind.

Description

Technical Field

[0001] This utility model relates to the field of curtains, and in particular to a new type of roller blind. Background Technology

[0002] Roller blinds, as a common sunshade and privacy protection device, are widely used in homes, offices, and commercial spaces. Traditional blackout roller blinds typically employ an integrated design, consisting of the curtain fabric, roller tube, side rails, and control system to achieve complete light blocking. However, existing blackout roller blinds still have the following structural and installation problems; Traditional roller blinds typically use fixed connections for their components, requiring precise alignment and tightening of screws or clips during installation. This makes the assembly process cumbersome, unfriendly to non-professionals, and increases the difficulty of use and maintenance. The existing roller blinds have a relatively fixed structural design, making it difficult to make flexible adjustments according to different scenarios (such as windows of different sizes, curved or irregular openings). For example, the length of the side rails and the width of the roller blinds usually need to be customized, which makes it difficult to quickly adapt to various installation environments and limits their application range. Utility Model Content

[0003] In view of this, the present invention addresses the shortcomings of the existing technology and its main purpose is to provide a new type of roller blind that solves the problems of cumbersome assembly process and inability to quickly adapt to various installation environments of traditional roller blinds.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a novel roller shutter, comprising: The upper box module includes a box body, a rollable curtain housed inside the box body, and a lower rail assembly connected below the curtain. The left and right rail modules are symmetrically arranged on both sides of the lower end of the box, and include vertically arranged side rails with guide channels for the curtain and the lower rail to slide. The upper box module is detachably connected to the mounting bracket via a snap-fit ​​structure; the left rail module is installed on the left side of the upper box module via the first connector; the right rail module is installed on the right side of the upper box module via the second connector.

[0005] Furthermore, the mounting bracket is a top-mounted bracket / side-mounted bracket, and the top of the box has a fastening groove, which the mounting bracket can be detachably assembled into.

[0006] Furthermore, the left and right ends of the box are respectively provided with a left end plate and a right end plate; the first connector and the second connector can be moved up and down and are located in the side rails of the left and right rail modules respectively; the upper ends of the first connector and the second connector extend into the inner cavity of the box, and the first connector and the second connector are respectively provided with multiple through holes for screws to pass through and fix to the left end plate and the right end plate.

[0007] Furthermore, the top of the box is provided with a first light-blocking strip along the length direction; the lower rail assembly includes a lower rail connected to one end of the curtain, and a second light-blocking strip is provided at the bottom of the lower rail along the length direction; the inner cavity of the guide channel is provided with a third light-blocking strip along the radial direction, and the third light-blocking strip is located on the front and / or back of the curtain.

[0008] Furthermore, the guide channel is provided with a positioning element that connects to the curtain fabric, and an elastic element is provided between the positioning element and the guide channel. The elastic element has at least two sets and is symmetrically distributed on both sides of the inner guide rail of the roller blind. Each set of elastic elements consists of multiple rubber springs arranged radially within the guide channel, and at least one of the opposing force-bearing end face and / or contact end face of the elastic element is fixed to the inner guide rail surface of the roller shutter or the inner wall of the guide channel.

[0009] Furthermore, both sides of the curtain are connected with a first trapezoidal strip, and the positioning element includes an inner guide rail of the roller blind and a first slot provided on the inner guide rail of the roller blind. The first trapezoidal strip slides in the inner cavity of the first slot.

[0010] Furthermore, a second trapezoidal strip is connected to the lower edge of the curtain; the lower rail includes a main body part and a connecting part that interlock, and the main body part is provided with a second slot for accommodating the second trapezoidal strip, with the inlet end of the second slot facing the connecting part, so that the curtain connected to the second trapezoidal strip is clamped between the main body part and the connecting part.

[0011] Furthermore, the side rail includes an interlocking roller blind side rail and a roller blind side rail cover. The interlocking part of the roller blind side rail and the roller blind side rail cover is provided with a sliding groove, and a side rail that can be installed on the wall is slidably connected in the sliding groove.

[0012] Furthermore, an auxiliary block is provided on the side of the side rail near the upper box module. The auxiliary block is fastened to the side rail of the roller blind and is located on the top of the side rail cover of the roller blind. A reserved space is provided between the top of the inner guide rail of the roller blind and the bottom of the box body for the deformation of the first trapezoidal strip when the curtain is rolled up.

[0013] Furthermore, the box body is equipped with a roller tube for winding up the curtain, and the roller tube is equipped with a labor-saving module. The labor-saving module includes a tail plug, a gear conversion head and at least one set of labor-saving spring sleeves. The tail plug is connected in series with the gear conversion head and at least one set of labor-saving spring sleeves and then inserted into the end of the roller tube.

[0014] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, the entire roller blind is divided into three modules: the upper box module, the left side rail module, and the right side rail module, which makes the roller blind easy to transport, easy to disassemble and assemble. The upper box module, as the core component of the system, includes a compact box body that integrates a retractable curtain mechanism. The lower end of the curtain is rigidly connected to the lower rail assembly to form a complete sunshade surface. The top of the box body adopts a snap-on structure, which can be quickly installed and removed from the wall mounting bracket, greatly simplifying the installation and maintenance process. The symmetrically designed left and right rail modules are precisely connected to the upper box module via dedicated connectors. Each rail module contains vertically arranged rails with internal guide channels to provide a smooth sliding track for the curtain and lower rail. The left rail module is connected to the left side of the box via a first connector, while the right rail module is connected to the right side via a second connector. This dedicated connection mechanism ensures the stability and reliability of the overall structure while also facilitating the disassembly and assembly of the entire roller blind.

[0015] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a perspective view of Embodiment 1 of this utility model.

[0017] Figure 2 This is a bottom side view of Embodiment 1 of this utility model.

[0018] Figure 3 This is a top side view of the side rail of Embodiment 1 of this utility model.

[0019] Figure 4 This is a diagram showing the connection status of the side rail in Embodiment 1 of this utility model.

[0020] Figure 5 This is a side view of the lower rail of Embodiment 1 of this utility model.

[0021] Figure 6 This is a diagram showing the inner cavity of the box body according to Embodiment 1 of this utility model.

[0022] Figure 7 This is a diagram showing the assembly state of the side rail in Embodiment 1 of this utility model.

[0023] Figure 8 This is a side view of the box body of Embodiment 1 of this utility model.

[0024] Figure 9 This is a diagram showing the inner cavity of the side rail in Embodiment 1 of this utility model.

[0025] Figure 10 This is a cross-sectional view of the box body according to Embodiment 1 of this utility model.

[0026] Figure 11This is a top view of the side rail of Embodiment 1 of this utility model.

[0027] Figure 12 This is a cross-sectional view of the lower rail of Embodiment 1 of this utility model.

[0028] Figure 13 This is a cross-sectional view of the rolled tube according to Embodiment 1 of this utility model.

[0029] Explanation of reference numerals in the attached diagram: Upper box module 10, box body 11, left end plate 111, right end plate 112, curtain 12, first trapezoidal strip 121, second trapezoidal strip 122, first light-blocking strip 13, and buckle groove 14; Lower rail assembly 20, lower rail strip 21, main body 211, connecting part 212, second slot 213, second light-blocking strip 22; Side rail assembly 30, left side rail module 30a, right side rail module 30b, side rail strip 31, roller blind side rail 311, roller blind side rail cover 312, auxiliary block 313, slide groove 314, guide channel 32, 33, third light-blocking strip, elastic element 34, connector 35, first connector 35a, second connector 35b, through hole 351; Positioning component 40, inner guide rail of roller shutter 41, first slot 42; Reserved space 50, side rail 60; 70 Installation Code, 701 Top Mount Code, 702 Side Mount Code; 80 rolls of pipe; 90. Force-saving module, 91. Tail plug, 92. Gear converter, 93. Force-saving spring sleeve. Detailed Implementation

[0030] Please refer to Figure 1-13 As shown, it illustrates the specific structure of a preferred first embodiment of the present invention, which is a novel roller blind comprising: The upper box module 10 includes a box body 11, a rollable curtain 12 housed in the box body 11, and a lower rail assembly 20 connected below the curtain 12. The left rail module 30a and the right rail module 30b are symmetrically arranged on both sides of the lower end of the box 11, and include a vertically arranged side rail 31. The side rail 31 is provided with a guide channel 32 for the curtain 12 and the lower rail 21 to slide. The upper box module 10 is detachably connected to the mounting bracket 70 via a snap-fit ​​structure; the left rail module 30a is installed on the left side of the upper box module 10 via a first connector 35a; the right rail module 30b is installed on the right side of the upper box module 10 via a second connector 35b. The entire roller blind is divided into three modules: the upper box module 10, the left rail module 30a, and the right rail module 30b, which makes the roller blind easy to transport, disassemble, and assemble. Among them, the upper box module 10, as the core component of the system, includes a compact box body 11, which integrates a retractable curtain 12 mechanism. The lower end of the curtain 12 is rigidly connected to the lower rail assembly 20 to form a complete sunshade surface. The top of the box body 11 adopts a snap-on structure, which can be quickly installed and removed from the wall mounting bracket 70, greatly simplifying the installation and maintenance process.

[0031] In addition, the symmetrically designed left side rail module 30a and right side rail module 30b are precisely connected to the upper box module through dedicated connectors. Each side rail module contains a vertically set side rail 31, which has a guide channel 32 inside to provide a smooth sliding track for the curtain 12 and the lower rail 21. The left side rail module 30a is connected to the left side of the box 11 through the first connector 35a, and the right side rail module 30b is connected to the right side through the second connector 35b. This dedicated connection mechanism ensures the stability and reliability of the overall structure, while also facilitating the disassembly and assembly of the entire roller blind.

[0032] For example, the mounting bracket 70 is a top mounting bracket 701 / side mounting bracket 702. The top of the box body 11 is provided with a fastening groove 14, and the mounting bracket 70 is detachably assembled into the fastening groove 14. The top mounting bracket 701 is used for installation on the roof, and the side mounting bracket 702 is used for installation on the window frame; providing flexible installation options, users can choose the appropriate installation method according to actual needs. In addition, due to the opening of the fastening groove 14 on the top of the box body 11, the operator can first fix the mounting bracket 70. After the mounting bracket 70 is fixed, simply align the fastening groove 14 on the top of the box body 11 with the mounting bracket 70 and gently slide it in the horizontal direction to achieve quick locking, greatly simplifying the assembly process.

[0033] For example, the left and right ends of the box body 11 are respectively provided with a left end plate 111 and a right end plate 112; the first connector 35a and the second connector 35b are respectively movable up and down and are provided in the side rails 31 of the left side rail module 30a and the right side rail module 30b; the upper ends of the first connector 35a and the second connector 35b extend into the inner cavity of the box body 11, and the first connector 35a and the second connector 35b are respectively provided with multiple through holes 351 for screws to pass through and fix to the left end plate 111 and the right end plate 112. The multiple through holes 351 added to the side wall of the connector 35 match the standard screw size. During assembly, the operator can adjust the position of the first connector 35a and the second connector 35b on the left end plate 111 and the right end plate 112 according to the height of the ground, so that the upper end of the side rail 31 is connected to the box body 11 and the lower end is in contact with the ground, ensuring the verticality and stability of the overall structure.

[0034] In addition, the selection of the fixed positions of the first connector 35a and the second connector 35b can precisely control the relative distance between the box body 11 and the side rail 31, so that the entire roller blind can optimize the light-blocking effect and aesthetics according to the actual installation requirements.

[0035] For example, the top of the box body 11 is provided with a first light-blocking strip 13 along the length direction; the lower rail assembly 20 includes a lower rail 21 connected to one end of the curtain 12, and a second light-blocking strip 22 is provided at the bottom of the lower rail 21 along the length direction; the inner cavity of the guide channel 32 is provided with a third light-blocking strip 33 along the radial direction, and the third light-blocking strip 33 is located on the front and / or back of the curtain 12. When light blocking is required, the first light-blocking strip 13 at the top of the box 11 fits tightly against the ceiling during installation, forming a seamless barrier and completely preventing light from seeping in from the top gaps. The second light-blocking strip 22 at the bottom of the lower rail 21 can be reserved with sufficient length to ensure that even if the curtain 12 is slightly deformed by airflow, the light-blocking component can still fit tightly against the ground or windowsill, preventing light leakage from the bottom. The edge rail 31 and the edge of the curtain 12 adopt an embedded sealing structure to ensure that no light penetrates from the side, thereby achieving a full light-blocking effect from top to bottom and left to right. It is especially suitable for light-sensitive environments. In addition, the above structural design can resist the influence of airflow such as air conditioning wind and natural wind, maintaining the stability of light blocking.

[0036] For example, the guide channel 32 is provided with a positioning member 40 connected to the curtain 12, and an elastic member 34 is provided between the positioning member 40 and the guide channel 32. The elastic member 34 has at least two sets and is symmetrically distributed on both sides of the inner guide rail 41 of the roller blind. Each set of elastic elements 34 consists of multiple rubber springs arranged radially within the guide channel 32. At least one of the opposing force-bearing end face and / or contact end face of the elastic element 34 is fixed to the surface of the inner guide rail 41 or the inner wall of the guide channel 32. Due to the contact of the elastic elements 34, when the curtain 12 moves up and down under the drive of the built-in roller blind mechanism in the housing 11, the positioning element 40 will undergo adaptive displacement along the guide channel 32. At this time, the elastic element 34 continuously applies a controllable contact force to the positioning element 40 through its elastic restoring force. This allows the curtain 12 to automatically return to its original position even if it deforms under the drive of the roller blind mechanism, effectively compensating for dimensional tolerances and assembly deviations that may exist during manufacturing and installation. This method achieves dynamic correction of the curtain 12's running trajectory, significantly improves the light-blocking and sealing performance of the curtain 12 in the closed state, reduces the risk of operational jamming due to precision errors, and extends the product's service life. Multiple rubber springs are equidistantly distributed to ensure that the inner guide rail 41 of the roller blind can obtain uniform elastic support force during movement and reduce manufacturing costs. At the same time, at least one side of the force-bearing end face (the contact surface with the inner guide rail 41 of the roller blind) and / or the abutting end face (the contact surface with the inner wall of the guide channel 32) of the elastic element 34 is fixedly connected (such as by adhesive, snap or screw fixation), which can effectively prevent the rubber spring from shifting or falling off during repeated compression and rebound, and ensure that the elastic element 34 always applies a stable abutting force to the inner guide rail 41 of the roller blind.

[0037] For example, both sides of the curtain fabric 12 are connected with first trapezoidal strips 121. The positioning member 40 includes an inner guide rail 41 of the roller blind and a first slot 42 provided on the inner guide rail 41 of the roller blind. The first trapezoidal strips 121 slide in the inner cavity of the first slot 42. The positioning member 40 is mainly composed of the inner guide rail 41 of the roller blind and the first slot 42 provided on the inner guide rail 41 of the roller blind. The first trapezoidal strips 121 on both sides of the curtain fabric 12 can slide along the inner cavity of the first slot 42 to form a stable guiding fit. At least two sets of elastic members 34 (such as springs or elastic rubber blocks) are provided and symmetrically distributed on both sides of the inner guide rail 41 of the roller blind so that it can be evenly stressed, avoid jamming caused by unilateral load, and ensure the adaptive adjustment capability of the inner guide rail 41 of the roller blind in the guide channel 32. Meanwhile, the inner guide rail 41 of the roller blind is a long strip that extends radially along the guide channel 32, with one side abutting the inner wall of the guide channel 32 and the other side held in a floating state by the elastic support of the elastic element 34. When the first trapezoidal strip 121 is inserted into the first slot 42, and the curtain 12 moves up and down under the drive of the roller blind mechanism, the curtain 12 deforms under the action of external force. The first trapezoidal strip 121 will generate contact pressure with the inner wall of the inner guide rail 41, thereby pushing the inner guide rail 41 of the roller blind to move towards the elastic element 34. The elastic element 34 is compressed and deformed. During this process, the rebound force of the elastic element 34 will act in the opposite direction on the inner guide rail 41 of the roller blind, so that it applies a dynamic correction force to the first trapezoidal strip 121, causing the curtain 12 to return to the normal movement trajectory. This multi-level force transmission mechanism (curtain deformation → pressure of the first trapezoidal strip → displacement of the inner guide rail of the roller blind → buffering of the elastic element → reset correction) not only effectively absorbs assembly tolerances and running vibrations, but also significantly improves the sliding stability of the curtain 12 in the side rail 31, reduces frictional resistance, and extends service life.

[0038] For example, the lower edge of the curtain 12 is connected to a second trapezoidal strip 122; the lower rail 21 includes a main body portion 211 and a connecting portion 212 that interlock. The main body portion 211 is provided with a second slot 213 for accommodating the second trapezoidal strip 122, with the inlet end of the second slot 213 facing the connecting portion 212, so that the curtain 12 connected to the second trapezoidal strip 122 is clamped between the main body portion 211 and the connecting portion 212. Because the lower rail 21 is divided into a main body portion 211 and a connecting portion 212, it facilitates manufacturing and transportation for the manufacturer. At the same time, the main body portion 211 is provided with a second slot 213, the opening of which faces the connecting portion 212, so that the second trapezoidal strip 122 at the lower edge of the curtain 12 can be accurately embedded in the slot and firmly clamped by the interlocking of the two parts.

[0039] It should be noted that both the first trapezoidal strip 121 and the second trapezoidal strip 122 adopt a plate-like structure that combines rigidity and flexibility, such as a metal sheet with a thickness of about 1 mm (such as stainless steel or spring steel), so that it can provide sufficient support strength while still adapting to a certain degree of bending deformation.

[0040] For example, the side rail 31 includes a roller blind side rail 311 and a roller blind side rail cover 312 that interlock. The interlocking part of the roller blind side rail 311 and the roller blind side rail cover 312 is provided with a groove 314, and a side rail 60 that can be installed on the wall is slidably connected in the groove 314. Dividing the side rail 31 into the roller blind side rail 311 and the roller blind side rail cover 312 parts facilitates the transportation and installation of the entire device. The side rails 60 are pre-installed on the wall and slide within the grooves 314, forming a sliding assembly. This allows the side rail 31, composed of the roller blind side rail 311 and the roller blind side rail cover 312, to slide along the side rails 60. This facilitates adjustment of the side rail 31 by operators to accommodate various installation environments. For example, by sliding the side rail 31 as a whole, the installation height of the curtain 12 can be flexibly adjusted to accommodate differences in window opening positions on different floors. When there are construction errors on the wall, the sliding mechanism allows the side rail 31 to be finely adjusted to fit the wall surface, eliminating the problem of the curtain 12 getting stuck due to uneven building surfaces.

[0041] For example, an auxiliary block 313 is provided on the side of the side rail 31 near the upper box module 10. The auxiliary block 313 is fastened to the roller blind side rail 311 and is located on the top of the roller blind side rail cover 312. A reserved space 50 is provided between the top of the inner guide rail 41 of the roller blind and the bottom of the box body 11 for the deformation of the first trapezoidal strip 121 when the curtain fabric 12 is rolled up. The roller blind side rail 311 and the roller blind side rail cover 312 can be fixed first to form a basic guide rail, and then the auxiliary block 313 can be assembled separately, simplifying the difficulty of operation at height or in confined spaces. In addition, the auxiliary block 313 on the top of the roller blind side rail cover 312 can be detached separately. When inspecting the roller blind mechanism inside the box body 11, only the auxiliary block 313 needs to be removed to provide sufficient top operating space, so as to facilitate the separation of the box body 11 and the mounting bracket 70. The reserved space 50 provides a necessary buffer area for the dynamic deformation of the curtain 12 during the rolling process. When the roller blind mechanism drives the curtain 12 to roll upward, the first trapezoidal strips 121 on both sides of the curtain 12 undergo slight elastic deformation due to the rolling action. At this time, the reserved space 50 can accommodate the temporary displacement of the first trapezoidal strips 121, avoiding rigid interference between them and the bottom of the box 11, and ensuring that the curtain 12 rolls up smoothly without obstruction.

[0042] For example, the housing 11 is provided with a roller tube 80 for winding up the curtain 12. The roller tube 80 is provided with a labor-saving module 90. The labor-saving module 90 includes a tail plug 91, a gear conversion head 92 and at least one set of labor-saving spring sleeves 93. The tail plug 91 is connected in series with the gear conversion head 92 and at least one set of labor-saving spring sleeves 93 and then inserted into the end of the roller tube 80. The gear conversion head 92 ensures that the winding tube 80 maintains the same rotation direction when winding the curtain 12, avoiding misalignment or loosening of the curtain due to reverse rotation, thus improving the reliability and service life of the system. The labor-saving spring sleeve 93 provides progressive damping when the curtain 12 is wound, making the operation more labor-saving and smooth, while preventing excessively fast rewinding due to gravity or inertia, ensuring that the curtain unfolds or retracts smoothly. The tail plug 91 serves as a fixed base, and is embedded in the end of the winding tube 80 after being connected in series with the gear conversion head 92 and the labor-saving spring sleeve 93. The structure is compact and easy to maintain. If it is necessary to adjust the damping force or replace parts, it can be quickly disassembled and assembled, reducing maintenance costs.

[0043] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A novel roller blind, comprising: The upper box module (10) includes a box body (11) and a rollable curtain (12) housed in the box body (11) and a lower rail assembly (20) connected below the curtain (12). The left side rail module (30a) and the right side rail module (30b) are symmetrically arranged on both sides of the lower end of the box body (11), and include vertically arranged side rails (31). The side rails (31) are provided with guide channels (32) for the curtain (12) and the lower rail (21) to slide. The feature is that: The upper box module (10) is detachably connected to the mounting bracket (70) via a snap-fit ​​structure; the left side rail module (30a) is installed on the left side of the upper box module (10) via a first connector (35a); the right side rail module (30b) is installed on the right side of the upper box module (10) via a second connector (35b).

2. The novel roller blind according to claim 1, characterized in that: The mounting bracket (70) is a top mounting bracket (701) / side mounting bracket (702). The top of the box body (11) is provided with a fastening groove (14). The mounting bracket (70) is detachably assembled into the fastening groove (14).

3. The novel roller blind according to claim 1, characterized in that: The left and right ends of the box (11) are respectively provided with a left end plate (111) and a right end plate (112); the first connector (35a) and the second connector (35b) can be moved up and down and are respectively located in the side rails (31) of the left rail module (30a) and the right rail module (30b); the upper ends of the first connector (35a) and the second connector (35b) extend into the inner cavity of the box (11), and the first connector (35a) and the second connector (35b) are respectively provided with multiple through holes (351) for screws to pass through and fix to the left end plate (111) and the right end plate (112).

4. A novel roller blind according to claim 1, characterized in that: The top of the box body (11) is provided with a first light-blocking strip (13) along the length direction; the lower rail assembly (20) includes a lower rail (21) connected to one end of the curtain (12), and a second light-blocking strip (22) is provided at the bottom of the lower rail (21) along the length direction; the inner cavity of the guide channel (32) is provided with a third light-blocking strip (33) along the radial direction, and the third light-blocking strip (33) is located on the front and / or back of the curtain (12).

5. A novel roller blind according to claim 4, characterized in that: The guide channel (32) is provided with a positioning element (40) connected to the curtain (12), and an elastic element (34) is provided between the positioning element (40) and the guide channel (32). The elastic element (34) has at least two sets and is symmetrically distributed on both sides of the inner guide rail (41) of the roller blind. Each set of elastic elements (34) consists of multiple rubber springs arranged radially within the guide channel (32), and at least one of the opposite force-bearing end face and / or contact end face of the elastic element (34) is fixed to the surface of the inner guide rail (41) of the roller shutter or the inner wall of the guide channel (32).

6. A novel roller blind according to claim 5, characterized in that: Both sides of the curtain (12) are connected to a first trapezoidal strip (121). The positioning member (40) includes an inner guide rail (41) of the roller blind and a first slot (42) provided on the inner guide rail (41) of the roller blind. The first trapezoidal strip (121) slides in the inner cavity of the first slot (42).

7. A novel roller blind according to claim 1, characterized in that: The lower edge of the curtain (12) is connected to a second trapezoidal strip (122); the lower rail (21) includes a main body part (211) and a connecting part (212) that interlock. The main body part (211) is provided with a second slot (213) for accommodating the second trapezoidal strip (122). The inlet end of the second slot (213) faces the connecting part (212), so that the curtain (12) connected to the second trapezoidal strip (122) is clamped between the main body part (211) and the connecting part (212).

8. A novel roller blind according to claim 5, characterized in that: The side rail (31) includes a roller blind side rail (311) and a roller blind side rail cover (312) that are interlocked. The interlocking part of the roller blind side rail (311) and the roller blind side rail cover (312) is provided with a groove (314). A side rail (60) that can be installed on the wall is slidably connected in the groove (314).

9. A novel roller blind according to claim 8, characterized in that: The side rail (31) is provided with an auxiliary block (313) on the side near the upper box module (10). The auxiliary block (313) is fastened to the side rail (311) of the roller blind and is located on the top of the side rail cover (312) of the roller blind. A reserved space (50) is provided between the top of the inner guide rail (41) of the roller blind and the bottom of the box body (11) for the deformation of the first trapezoidal strip (121) when the curtain fabric (12) is rolled up.

10. A novel roller blind according to claim 1, characterized in that: The box body (11) is provided with a roller tube (80) for winding up the curtain (12). The roller tube (80) is provided with a labor-saving module (90). The labor-saving module (90) includes a tail plug (91), a gear conversion head (92) and at least one set of labor-saving spring sleeves (93). The tail plug (91) is connected in series with the gear conversion head (92) and at least one set of labor-saving spring sleeves (93) and then inserted into the end of the roller tube (80).

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