Roller blind device

Abstract

This application relates to the field of rail transit facility maintenance technology, and in particular to a roller shutter device. The roller shutter device provided in this application includes: a roller shaft, comprising a rotating shaft, a fixed shaft, and an elastic element, the fixed shaft being disposed inside the rotating shaft, and both ends of the elastic element being connected to the roller shaft and the fixed shaft respectively; a roller shutter, which is retractably wound around the rotating shaft; two supports, each disposed at one end of the roller shaft, the roller shaft being rotatable relative to the supports; and a winding assembly, including a ratchet and a pawl, the ratchet being connected to the rotating shaft for synchronous movement with the roller shaft, the fixed shaft being fixedly connected to the supports, the ratchet having multiple teeth distributed circumferentially on it, the pawl being pivotally connected to the supports, one end of the pawl engaging with the ratchet teeth, and the other end of the pawl having a rope component. The roller shutter device provided in this application helps to adjust the pre-stored potential energy of the elastic element, achieving convenient compensation of the roller shutter's rewind force, thereby simplifying the maintenance process and improving maintenance efficiency.

Description

Technical Field

[0001] This application relates to the field of rail transit facility maintenance technology, and in particular to a roller shutter device. Background Technology

[0002] In the rail transit sector, the driver's cab sunshade is a crucial functional component for ensuring driver visibility and controlling cabin temperature. Due to the high temperatures and direct sunlight during summer, the driver's cab sunshade of rail vehicles needs to be frequently operated to meet the shading requirements.

[0003] Existing rail vehicle sunshades mostly adopt a roller-type rewind structure, which relies on the cooperation of a rotating shaft, a fixed shaft, and elastic components. Specifically, the elastic components can store potential energy to achieve automatic rewinding of the blind, while the ratchet and pawl mechanism locks the blind's unfolded position step by step through ratchet teeth.

[0004] However, frequent operation can lead to fatigue and relaxation of the elastic components, gradual decay of the stored potential energy, and ultimately, insufficient rewinding force to overcome the weight and frictional resistance of the roller blind, causing the sunshade to fail to rewind. Furthermore, existing sunshade maintenance procedures are complex and inefficient. Utility Model Content

[0005] In view of the above problems, this application provides a roller shutter device that helps to adjust the pre-stored potential energy of the elastic element, realize convenient compensation of the roller shutter rewind force, simplify the maintenance process, and thus improve maintenance efficiency.

[0006] This application provides a roller blind device, comprising: a roller shaft, including a rotating shaft, a fixed shaft, and an elastic element, wherein the fixed shaft is disposed inside the rotating shaft, and both ends of the elastic element are respectively connected to the roller shaft and the fixed shaft; a roller blind, wherein the roller blind is retractably wound around the rotating shaft; supports, wherein the supports are two respectively disposed at both ends of the roller shaft, and the roller shaft is rotatable relative to the supports; and a winding assembly, including a ratchet and a pawl, wherein the ratchet is connected to the rotating shaft to move synchronously with the roller shaft, the fixed shaft is fixedly connected to the supports, the ratchet has a plurality of ratchet teeth distributed along its circumference, the pawl is pivotally connected to the supports, one end of the pawl engages with the ratchet teeth, and the other end of the pawl is provided with a rope element.

[0007] In one possible implementation, the reel further includes: two end caps, which are respectively sealed at both ends of the rotating shaft and fixedly connected to the rotating shaft; a fixed shaft passes through the end caps and is fixedly connected to the support; the end caps are rotatable relative to the fixed shaft; a ratchet is fixedly connected to one of the end caps; and the elastic element is connected to the fixed shaft and the end cap respectively.

[0008] In one possible implementation, the ratchet and the shaft end cap are an integral structure.

[0009] In one possible implementation, the two supports include a first support located at a first end of the pivot shaft, wherein one of the first support and the pawl is provided with a pivot hole, and the other is provided with a pivot shaft, the pivot shaft being rotatably inserted through the pivot hole so that the pawl is rotatable relative to the first support.

[0010] In one possible implementation, the first support is provided with a first connecting hole, the cross-section of the first connecting hole is not circular, and the end of the fixed axis facing the first support is provided with a first connecting part, the cross-section of the first connecting part matches the cross-section of the first connecting hole, and the first connecting part passes through the first connecting hole.

[0011] In one possible implementation, the two supports further include a second support located at a second end of the rotating shaft, the second support having a through hole extending axially along the roller shaft; the roller blind assembly further includes: a fastener passing through the through hole to connect with the second support; and one end of the fixed shaft facing the second support is connected to the fastener.

[0012] In one possible implementation, the second support includes a first side facing the roller blind along the axial direction of the roller and a second side facing away from the roller blind; the fastener includes a head and a rod portion, the rod portion passing through from the first side to the second side, the head being located on the first side, and a fastening fitting is also provided on the second side of the second support, the fastening fitting being connected to the rod portion and cooperating with the head to jointly clamp the second support; the head is provided with a second connecting hole, the cross-section of the second connecting hole being non-circular, and a second connecting portion is provided at one end of the fixed axis facing the second support, the second connecting portion passing through the second connecting hole.

[0013] In one possible implementation, the through hole includes a first hole segment and a second hole segment, the first hole segment and the second hole segment being distributed along the axial direction of the spool, the first hole segment being disposed close to the spool, the second hole segment being disposed away from the spool, and the diameter of the first hole segment being larger than the diameter of the second hole segment.

[0014] In one possible implementation, the roller blind includes a connecting end and a winding end, the connecting end being fixedly connected to the rotating shaft; the roller blind device further includes a guide assembly, the guide assembly corresponding one-to-one with the support, the guide assembly including a guide rod and a sliding member, the guide rod being connected to the corresponding support, the guide rod being perpendicular to the roller shaft, one end of the sliding member being slidably engaged with the guide rod, and the other end being fixedly connected to the winding end.

[0015] In one possible implementation, the guide assembly further includes a buffer member disposed at one end of the guide rod connected to the support, the buffer member being used to buffer the slider.

[0016] The roller shutter device provided in this application fixes a fixed shaft to a support and connects the two ends of an elastic element to the fixed shaft and a rotating shaft, respectively. When it is necessary to adjust the pre-stored potential energy of the elastic element, the initial deformation state of the elastic element can be changed by rotating the fixed shaft. The rotation of the fixed shaft forces the two ends of the elastic element to rotate relative to each other, thereby increasing the torsional angle of the elastic element and further "tightening" or "releasing" it, thus directly changing its stored elastic potential energy. This design simplifies the adjustment action to a rotation operation, simplifies the maintenance process, and improves maintenance efficiency. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] Figure 1 A schematic diagram of the roller shutter device provided in this application;

[0019] Figure 2 Exploded view of the roller shutter device provided in this application;

[0020] Figure 3 Partial structural diagram of the roller shutter device provided in this application Figure 1 ;

[0021] Figure 4 Partial structural diagram of the roller shutter device provided in this application Figure 2 ;

[0022] Figure 5 A schematic diagram of the structure of the second support in the roller shutter device provided in this application;

[0023] Figure 6 This is a schematic diagram of the fasteners in the roller shutter device provided in this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Roller shutter device;

[0026] 10-Spindle; 11-Rotating shaft; 12-Fixed shaft; 121-First connecting part; 122-Second connecting part; 13-Elastic element; 14-Shaft end cap;

[0027] 20-Roller blind;

[0028] 30 - Support; 31 - First support; 32 - Second support; 321 - Through hole; 322 - First hole section; 323 - Second hole section;

[0029] 40 - Rewind assembly; 41 - Ratchet; 42 - Pawl;

[0030] 50-Rope pieces;

[0031] 60-Fastener; 61-Head; 611-Second connecting hole; 62-Rod; 63-Fastening mating part;

[0032] 70 - Guide assembly; 71 - Guide rod; 72 - Sliding element;

[0033] 80-Buffer.

[0034] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0035] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0036] Existing rail vehicle sunshades mostly employ a roller-type retraction structure, relying on the coordination of a rotating shaft, a fixed shaft, and elastic components. Specifically, the elastic components can store potential energy to achieve automatic retraction of the blind, while the ratchet and pawl mechanism locks the blind's unfolded position step by step through ratchet teeth. However, frequent operation leads to fatigue and loosening of the elastic components, and the stored potential energy gradually diminishes. Ultimately, insufficient retraction force cannot overcome the blind's weight and frictional resistance, causing the sunshade to fail to retract. Furthermore, existing sunshade maintenance procedures are complex and inefficient.

[0037] In view of this, this application provides a roller shutter device, which fixes a fixed shaft to a support and connects the two ends of an elastic element to the fixed shaft and a rotating shaft respectively. When it is necessary to adjust the pre-stored potential energy of the elastic element, the initial deformation state of the elastic element can be changed by rotating the fixed shaft. The rotation of the fixed shaft forces the two ends of the elastic element to rotate relative to each other, thereby increasing the torsional angle of the elastic element, allowing it to be further "tightened" or "released," and thus directly changing its stored elastic potential energy. This design simplifies the adjustment action to a rotation operation, simplifies the maintenance process, and improves maintenance efficiency.

[0038] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings:

[0039] refer to Figure 1-6 The roller blind device 1 provided in this application includes a roller 10, a roller blind 20, a support 30, and a winding assembly 40. The roller 10 serves as the core of the roller blind device 1's rotational support, and its rotation enables the roller blind 20 to be raised and lowered. The roller blind 20 is a functional component that provides light blocking, heat insulation, dust protection, or privacy protection. The roller blind 20 can be made of polyester fiber or light-blocking coated fabric, and some designs can incorporate fire-retardant properties. Weight bars can be embedded in the edges of the roller blind 20 to maintain a flat droop and prevent it from swaying. The support 30 provides structural support and a base for installation and fixation. The winding assembly 40 controls the movement and locking of the roller blind 20.

[0040] The roller 10 includes a rotating shaft 11, a fixed shaft 12, and an elastic element 13. The fixed shaft 12 can be located inside the rotating shaft 11. The two ends of the elastic element 13 are connected to the roller 10 and the fixed shaft 12 respectively. The elastic deformation of the elastic element 13 enables the roller blind 20 to rewind or adjust its tension. Optionally, the elastic element 13 can be a spring-loaded spring made of high-carbon steel strip, achieving uniform torque output through spiral winding. Alternatively, the elastic element 13 can be a torsion spring, using a titanium-nickel shape memory alloy to achieve tension adjustment. The roller blind 20 is wound retractably around the rotating shaft 11.

[0041] Furthermore, there can be two supports 30. The two supports 30 are respectively located at both ends of the roller 10. The roller 10 is rotatable relative to the supports 30. The supports 30 can form a stable rotational support system. By forming a simply supported beam structure with two supports 30, the radial load when the roller blind 20 is unfolded can be evenly distributed to the support points.

[0042] The winding assembly 40 includes a ratchet 41 and a pawl 42. The ratchet 41 can be connected to the rotating shaft 11 and moves synchronously with the winding shaft 10. The fixed shaft 12 can be fixedly connected to the support 30 to maintain synchronization with the state of the support 30. The ratchet 41 has multiple ratchet teeth, which can be distributed circumferentially along the ratchet 41. The pawl 42 can be pivotally connected to the support 30. Thus, one end of the pawl 42 can engage with the ratchet teeth. The other end of the pawl 42 can be provided with a rope element 50.

[0043] In the specific implementation process, the rotation direction of the shaft 11 when the roller blind 20 is unfolded is set to clockwise. When an external force pulls the roller blind 20 to unfold, the shaft 11 rotates clockwise, and the ratchet 41 can rotate synchronously with the shaft 11. The inclined working surface of the ratchet can push the pawl 42 to pivot. Under the action of the elastic element 13, the pawl 42 engages with the groove of the next ratchet. At this time, the pawl 42 and the ratchet form a self-locking angle. When the operator pulls down the rope 50, the rope can drive the pawl 42 to rotate, thereby causing the pawl 42 to disengage from the ratchet engagement area. At this time, the torque stored in the elastic element 13 is released, driving the shaft 11 to rotate counterclockwise, so as to realize the winding of the roller blind 20.

[0044] Understandably, by fixing the fixed shaft 12 to the support 30 and connecting both ends of the elastic element 13 to the fixed shaft 12 and the rotating shaft 11 respectively, the initial deformation state of the elastic element 13 can be changed by rotating the fixed shaft 12 when the pre-stored potential energy of the elastic element 13 needs to be adjusted. The rotation of the fixed shaft 12 will force the two ends of the elastic element 13 to rotate relative to each other, thereby increasing the torsional angle of the elastic element 13, allowing it to be further "tightened" or "released," thus directly changing its stored elastic potential energy. This design simplifies the adjustment action to a rotation operation, simplifying the maintenance process and improving maintenance efficiency.

[0045] In one possible implementation, the reel 10 further includes end caps 14. Specifically, there can be two end caps 14. The two end caps 14 can respectively seal both ends of the rotating shaft 11. Furthermore, the two end caps 14 can be fixedly connected to both ends of the rotating shaft 11. Optionally, the end caps 14 can be press-fitted to the rotating shaft 11 by an interference fit. Alternatively, the end caps 14 can be fixedly connected to the rotating shaft 11 by threads. Specifically, internal threads can be machined at the end of the rotating shaft 11, and matching external threads can be machined on the end caps 14. Alternatively, the end caps 14 can be fixedly connected to the rotating shaft 11 by keyways and splines. Further, a fixed shaft 12 can pass through the end caps 14. Furthermore, the fixed shaft 12 passing through the end caps 14 can be fixedly connected to the support 30. Optionally, the fixed shaft 12 passing through the end caps 14 can be fixedly connected to the support 30 by bolts. Since the shaft end cap 14 is fixedly connected to the rotating shaft 11, the shaft end cap 14 can rotate relative to the fixed shaft 12. One of the shaft end caps 14 can be fixedly connected to the ratchet 41 to keep their movements consistent. The elastic element 13 can be connected to both the fixed shaft 12 and the shaft end cap 14.

[0046] It is understandable that the fixed connection between the shaft end cap 14 and the rotating shaft 11 forms a stable torque transmission structure. Combined with the rigid fit between the fixed shaft 12 and the support 30, the coaxiality and stability of the roller 10 during rotation are ensured. The connection method of the elastic element 13 between the fixed shaft 12 and the shaft end cap 14 not only ensures the efficient storage and release of elastic potential energy, but also makes the rolling shutter 20 smooth and controllable during the raising and lowering process through the dynamic tension adjustment function.

[0047] In one possible implementation, the ratchet 41 and the shaft end cap 14 can be an integral structure. Optionally, the ratchet 41 and the shaft end cap 14 can be integrally formed using powder metallurgy technology, and the surface hardness can be improved by combining a heat treatment process. Alternatively, the ratchet 41 and the shaft end cap 14 can be formed by die casting.

[0048] Understandably, by designing the ratchet 41 and the shaft end cap 14 as a single unit, the assembly process can be simplified, effectively eliminating transmission errors caused by clearances between parts. This integrated design enhances the overall structural rigidity, reducing axial space occupation while ensuring transmission stability. The above solution reduces the overall cost of production, processing, and subsequent maintenance while maintaining functionality.

[0049] In one possible implementation, the two supports 30 include a first support 31 and a second support 32. The first support 31 is located at the first end of the pivot shaft 11. One of the first support 31 and the pawl 42 has a pivot hole, and the other has a pivot shaft. The pivot shaft rotatably passes through the pivot hole, allowing the pawl 42 to rotate relative to the first support 31. For example, the first support 31 may have a pivot hole, and the pawl 42 may have a pivot shaft. Alternatively, the first support 31 may have a pivot shaft, and the pawl 42 may have a pivot hole. This dual configuration of pivot shaft and pivot hole provides flexibility for adapting to different installation spaces and force directions.

[0050] In one possible implementation, the first support 31 is provided with a first connecting hole. The cross-section of the first connecting hole is non-circular. The fixed shaft 12 can be connected to the first support 31 through the first connecting hole. One end of the fixed shaft 12 is provided with a first connecting portion 121. Specifically, the end of the fixed shaft 12 facing the first support 31 is provided with the first connecting portion 121. The cross-sectional shape of the first connecting portion 121 can match the cross-section of the first connecting hole so that the first connecting portion 121 can pass through the first connecting hole to realize the connection between the fixed shaft 12 and the first support 31. Optionally, the first connecting hole can be an irregularly shaped hole. For example, the first connecting hole can be a hexagonal hole. Or, the first connecting hole can be a rectangular hole. Further, the edge of the first connecting hole can be provided with a guide chamfer to make assembly easier. The first connecting portion 121 can also be surface knurled or locally hardened to enhance wear resistance. In this way, the cooperation between the non-circular first connecting hole and the first connecting portion 121 can form multi-point contact force, which can improve the torque bearing capacity.

[0051] In one possible implementation, the two supports 30 further include a second support 32. The second support 32 is located at the second end of the rotating shaft 11. Optionally, the first end of the rotating shaft 11 can be the left end of the rotating shaft 11, and the second end of the rotating shaft 11 can be the right end of the rotating shaft 11. A through hole 321 is provided on the second support 32. The through hole 321 can pass through the second support 32 along the axial direction of the roller 10. The roller shutter device 1 also includes a fastener 60. The fastener 60 can pass through the through hole 321 to connect with the second support 32. Further, the other end of the fixed shaft 12 can be connected with the fastener 60. That is, the end of the fixed shaft 12 facing the second support 32 can be connected with the fastener 60. Optionally, the fastener 60 can be connected to the second support 32 by a combination of bolts and nuts. After the fastener 60 passes through the through hole 321 of the second support 32, it can be tightened and fixed by nuts. This method provides a stable connection and is easy to disassemble, facilitating later maintenance and repair.

[0052] In one possible implementation, the second support 32 includes a first side and a second side. The first side of the second support 32 faces the roller blind 20 along the axial direction of the roller spool 10. The second side of the second support 32 faces away from the roller blind 20 along the axial direction of the roller spool 10. Further, the fastener 60 includes a head 61 and a rod 62. The head 61 of the fastener 60 is located on the first side. The rod 62 of the fastener 60 extends from the first side of the second support 32 to the second side. The second side of the second support 32 is also provided with a fastening fitting 63. The fastening fitting 63 can be connected to the rod 62 of the fastener 60 and cooperates with the head 61 of the fastener 60 to jointly clamp the second support 32. The fastening fitting 63 and the rod 62 of the fastener 60 can be connected by threads. Alternatively, the fastening fitting 63 and the rod 62 can also be connected by magnetic attraction. For example, magnetic material can be embedded inside the rod 62 of the fastener 60 and the fastening fitting 63 to achieve a tight connection using magnetic force.

[0053] Furthermore, the head 61 of the fastener 60 is provided with a second connecting hole 611. The cross-section of the second connecting hole 611 is non-circular. Optionally, the shape of the second connecting hole 611 can be a regular polygon, a quincunx shape, or an irregular shape. The end of the fixed shaft 12 facing the second support 32 is provided with a second connecting portion 122. The second connecting portion 122 passes through the second connecting hole 611 to achieve circumferential fixation between the fixed shaft 12 and the fastener 60.

[0054] In one possible implementation, the second support 32 includes a first side facing the roller blind 20 along the axial direction of the roller 10 and a second side facing away from the roller blind 20; the fastener 60 includes a head 61 and a rod 62, the rod 62 passing from the first side to the second side, the head 61 being located on the first side, and the second side of the second support 32 is also provided with a fastening fitting 63, the fastening fitting 63 being connected to the rod 62 and cooperating with the head 61 to jointly clamp the second support 32; the head 61 is provided with a second connecting hole 611, the cross-section of the second connecting hole 611 being non-circular, and the end of the fixed shaft 12 facing the second support 32 is provided with a second connecting portion 122, the second connecting portion 122 passing through the second connecting hole 611.

[0055] In one possible implementation, the through hole 321 can be divided into two stepped hole structures along the axial direction of the reel 10. The through hole 321 includes a first hole segment 322 and a second hole segment 323. The first hole segment 322 and the second hole segment 323 can be distributed along the axial direction of the reel 10. The first hole segment 322 can be located close to the fixed shaft 12, and the second hole segment 323 can be located away from the fixed shaft 12. Furthermore, the diameter of the first hole segment 322 is larger than the diameter of the second hole segment 323. Specifically, the diameter of the first hole segment 322 is larger than the maximum outer dimension of the head 61 of the fastener 60. When the head 61 of the fastener 60 is located within the first hole segment 322, the head 61 of the fastener 60 can rotate freely circumferentially within the first hole segment 322. The diameter of the second hole segment 323 strictly matches the head 61 of the fastener 60, forming a surface fit and restricting its circumferential rotational freedom. When the head 61 of the fastener 60 is located in the second hole section 323, the head 61 of the fastener 60 is in contact with the hole wall of the second hole section 323 and cannot rotate, but can only move axially. When the head 61 of the fastener 60 retracts to the first hole section 322, due to the increase in hole diameter, the gap between the head 61 of the fastener 60 and the hole wall of the second hole section 323 widens, and thus it can rotate freely to adjust the state of the elastic element 13.

[0056] This segmented hole design ensures the circumferential stability of the fastener 60 in the locked position (second hole segment 323) and facilitates rotational adjustment within the first hole segment 322 during maintenance. This achieves the integration of axial fixing and circumferential adjustment functions, simplifies maintenance operations, and improves structural reliability.

[0057] When the elastic element 13 of the roller blind device 1 becomes fatigued and loosened due to frequent use, causing the roller blind 20 to jam or fail to roll back, it is necessary to adjust the pre-stored potential energy of the elastic element 13 without disassembly. The specific maintenance process is as follows:

[0058] First, position the fastening fitting 63 on the second side of the second support 32, and use a wrench to rotate the fastening fitting 63 counterclockwise until it disengages from the rod 62 of the fastener 60. Push the rod 62 of the fastener 60 so that the head 61 of the fastener 60 enters the first hole 322 from the second hole section 323 of the through hole 321, thereby releasing the axial fixation of the fastener 60 and releasing its circumferential rotational freedom, that is, allowing the head 61 of the fastener 60 to rotate freely in the circumference.

[0059] Furthermore, the open-end wrench is inserted into the rod portion 62 of the fastener 60 and pressed along the axial direction of the reel 10, while simultaneously rotating counterclockwise 1 to 2 revolutions. During rotation, since the head 61 of the fastener 60 engages with the second connecting portion 122 of the fixed shaft 12, the fixed shaft 12 can be driven to rotate synchronously, thereby compressing the elastic element 13 and increasing its torsional angle to store more elastic potential energy.

[0060] Finally, release the axial pressure on the fastener 60, and the shank 62 of the fastener 60 retracts into the second hole section 323 of the through hole 321, restoring its circumferentially locked state. Use a wrench to tighten the fastening fitting 63 clockwise to ensure the axial fixation of the fastener 60.

[0061] In one possible implementation, a limiting cover may be provided between the second support 32 and the reel 10. The limiting cover has a through hole. The second connecting part 122 of the fixed shaft 12 can pass through the through hole and connect to the head 61 of the fastener 60. The limiting cover can be an annular metal cover. The outer edge of the limiting cover has a flange boss, which is fixedly connected to the second support 32 by bolts to ensure axial positioning accuracy. A rubber sealing ring may be added between the limiting cover and the second support 32 to prevent dust from entering the through hole 321 and extend the service life of the component. The limiting cover can restrict the radial movement of the fastener 60 during the adjustment process and avoid connection failure due to loosening.

[0062] In one possible implementation, the roller blind 20 includes a connecting end and a winding end. The connecting end of the roller blind 20 is fixedly connected to the rotating shaft 11, so that the roller blind 20 can be raised and lowered as the rotating shaft 11 rotates. The roller blind device 1 also includes a guide assembly 70. There can be two guide assemblies 70. In this way, the guide assemblies 70 can be arranged one-to-one with the supports 30. The guide assemblies 70 can guide the movement of the roller blind 20.

[0063] It is understandable that the two guide components 70 and the two supports 30 are set in a one-to-one correspondence to form a relatively stable structural system. During the raising and lowering of the roller blind 20, the guide components 70 can restrict the degree of freedom of movement of the roller blind 20, making the movement of the roller blind 20 in the plane more regular, reducing the vibration and swaying of the entire device caused by the movement of the roller blind 20, thereby enhancing the overall structural stability of the roller blind device 1 and improving its operational reliability.

[0064] Furthermore, the guide assembly 70 includes a guide rod 71 and a slider 72. The guide rod 71 can be connected to a corresponding support 30. The guide rod 71 can also be perpendicular to the roller 10. To ensure stable movement of the roller blind 20, one end of the slider 72 can slide against the guide rod 71, and the other end of the slider 72 can be fixedly connected to the winding end.

[0065] Understandably, the guide rod 71 provides a fixed sliding track for the slider 72, allowing the slider 72 to move along the direction of the guide rod 71. Since the roller blind 20 is connected to the slider 72, when the roller blind 20 is raised or lowered, the slider 72 slides on the guide rod 71, thereby guiding the roller blind 20 to rise or fall smoothly in a predetermined direction, preventing the roller blind 20 from deviating, swaying, or twisting during movement, and ensuring the accuracy and stability of the roller blind 20's raising and lowering action.

[0066] Furthermore, when the roller blind 20 is in the unfolded state, its own weight will exert certain pressure and tension on the roller shaft 10 and the support 30. The sliding member 72 in the guide assembly 70 is connected to the roller blind 20, which can share part of the weight of the roller blind 20 to a certain extent, and transfer part of the load to the support 30 through the guide rod 71, thereby reducing the pressure on the roller shaft 10 and the support 30 and helping to extend the service life of the roller shaft 10, the support 30 and the entire roller blind device 1.

[0067] In one possible implementation, the guide assembly 70 further includes a buffer 80. The buffer 80 is located at the end of the guide rod 71 connected to the support 30, and serves to cushion the sliding member 72. The buffer 80 can be designed as an elastic damping module, integrated into the connection end between the guide rod 71 and the support 30. The buffer 80 can be made of highly elastic polyurethane or silicone rubber, and molded into a cylindrical or conical structure. The buffer 80 may have a through hole in its center, allowing for rigid connection to the guide rod 71 and the support 30 via bolts.

[0068] In one possible implementation, the roller blind assembly 1 further includes a roller blind cover. The roller blind cover may define a receiving cavity and an opening. The opening may communicate with the receiving cavity. A roller 10 may be disposed within the receiving cavity. The roller blind 20 may be rolled up or unrolled from the opening. Further, supports 30 may be sealed and secured to both ends of the roller blind cover.

[0069] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0070] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0071] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0072] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0073] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A roller blind device (1), characterized in that include: The reel (10) includes a rotating shaft (11), a fixed shaft (12) and an elastic element (13). The fixed shaft (12) is located inside the rotating shaft (11), and the two ends of the elastic element (13) are connected to the reel (10) and the fixed shaft (12) respectively. Roller blind (20), which is retractable and wound around the pivot (11); Supports (30), the supports (30) are two respectively provided at both ends of the scroll (10), the scroll (10) is rotatable relative to the supports (30); The winding assembly (40) includes a ratchet (41) and a pawl (42), the ratchet (41) being connected to the rotating shaft (11) for synchronous movement with the reel (10), and the fixed shaft (12) being fixedly connected to the support (30). The ratchet (41) is provided with a plurality of ratchet teeth distributed along its circumference. The pawl (42) is pivotally connected to the support (30). One end of the pawl (42) engages with the ratchet teeth, and the other end of the pawl (42) is provided with a rope (50).

2. The roller blind device (1) according to claim 1, characterized in that The scroll (10) also includes: Two shaft end caps (14) are provided, each sealing one end of the rotating shaft (11) and fixedly connected to it. A fixed shaft (12) passes through the shaft end caps (14) and is fixedly connected to the support (30). The shaft end caps (14) are rotatable relative to the fixed shaft (12). The ratchet (41) is fixedly connected to one of the shaft end caps (14), and the elastic element (13) is connected to the fixed shaft (12) and the shaft end cap (14) respectively.

3. The roller blind device (1) according to claim 2, characterized in that The ratchet (41) and the shaft end cap (14) are an integral structure.

4. The roller blind device (1) according to claim 1, characterized in that The two supports (30) include a first support (31) located at the first end of the pivot (11). The first support (31) and the pawl (42) are provided with a pivot hole and the other is provided with a pivot shaft. The pivot shaft is rotatably inserted through the pivot hole so that the pawl (42) can rotate relative to the first support (31).

5. The roller blind device (1) according to claim 4, characterized in that The first support (31) is provided with a first connecting hole, the cross-section of which is not circular. The fixed shaft (12) has a first connecting part (121) at one end facing the first support (31). The first connecting part (121) matches the cross section of the first connecting hole and passes through the first connecting hole.

6. The roller blind device (1) according to claim 4, characterized in that The two supports (30) further include a second support (32) located at the second end of the shaft (11), the second support (32) having a through hole (321) extending through the axial direction of the spool (10). The roller shutter device (1) further includes a fastener (60), which passes through the through hole (321) to connect with the second support (32); One end of the fixed shaft (12) facing the second support (32) is connected to the fastener (60).

7. The roller shutter device (1) according to claim 6, characterized in that, The second support (32) includes a first side facing the roller blind (20) along the axial direction of the roller (10) and a second side facing away from the roller blind (20); The fastener (60) includes a head (61) and a rod (62), the rod (62) extending from the first side to the second side, the head (61) being located on the first side, and a fastening fitting (63) being provided on the second side of the second support (32), the fastening fitting (63) being connected to the rod (62) and cooperating with the head (61) to jointly clamp the second support (32); The head (61) is provided with a second connecting hole (611), the cross-section of the second connecting hole (611) is not circular, and the fixed shaft (12) is provided with a second connecting part (122) at one end facing the second support (32), the second connecting part (122) passing through the second connecting hole (611).

8. The roller shutter device (1) according to claim 7, characterized in that, The through hole (321) includes a first hole segment (322) and a second hole segment (323). The first hole segment (322) and the second hole segment (323) are distributed along the axial direction of the spool (10). The first hole segment (322) is located close to the spool (10), and the second hole segment (323) is located away from the spool (10). The diameter of the first hole segment (322) is larger than the diameter of the second hole segment (323).

9. The roller shutter device (1) according to claim 1, characterized in that, The roller blind (20) includes a connecting end and a winding end, and the connecting end is fixedly connected to the rotating shaft (11); The roller shutter device (1) further includes: A guide assembly (70) is provided, which corresponds one-to-one with the support (30). The guide assembly (70) includes a guide rod (71) and a sliding member (72). The guide rod (71) is connected to the corresponding support (30) and is perpendicular to the scroll (10). One end of the slider (72) is slidably engaged with the guide rod (71), and the other end is fixedly connected to the winding end.

10. The roller blind device (1) according to claim 9, characterized in that, The guide assembly (70) further includes a buffer (80), which is located at the end of the guide rod (71) connected to the support (30) and is used to buffer the slider (72).

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