Curtain device and vehicle

Abstract

The application relates to the technical field of vehicle engineering, in particular to a curtain device and a vehicle. A balance component is connected with a frame, two ends of the balance component in a second direction intersecting with a first direction are respectively connected with a middle part of a pull rope, a first end of each pull rope is connected with a movable assembly, and a second end of each pull rope is used for receiving external force to pull the movable assembly to drive the curtain to move in the first direction, wherein the middle part of the pull rope is located between the first end of the pull rope and the second end of the pull rope, and the connection position of the balance component and the pull rope can change the position in the second direction under the pulling of the pull rope to balance the pulling force of the two pull ropes. If there is a difference in the pulling force of the pull ropes on both sides, the connection position of the balance component and the pull rope will produce corresponding displacement in the second direction, the position of the balance component is adjusted to balance the pulling force on both sides, so that the movable assembly is uniformly stressed on both sides, and the curtain can be smoothly and smoothly moved in the first direction.

Description

Technical Field

[0001] This application relates to the technical field of vehicle engineering, specifically to a curtain device and a vehicle. Background Technology

[0002] In existing vehicle curtain systems, the curtain moves along the light-transmitting area of ​​the window frame to change the light-blocking area. However, the curtain system may experience asynchronous movement on both sides due to factors such as large span on the frame and component tolerances. Therefore, there is an urgent need for a curtain system that can overcome the limitations of frame span and adjust component tolerances. Utility Model Content

[0003] The purpose of this application is to provide a curtain device and a vehicle.

[0004] This application provides a curtain device, comprising: a frame having a main body and a light-transmitting area connected to the main body; a curtain assembly including a curtain and a movable component, the movable component being connected to the curtain and the main body respectively, the movable component being used to move relative to the main body in a first direction; and a pull cord assembly including a balancing component and two pull cords, the balancing component being connected to the frame, the balancing component having its two ends connected to the middle portion of each pull cord in a second direction intersecting the first direction, the first end of each pull cord being connected to the movable component, and the second end of each pull cord being used to receive an external force to pull the movable component to move the curtain in the first direction, wherein the middle portion of the pull cord is located between the first end and the second end of the pull cord, and the connection point between the balancing component and the pull cord is capable of changing its position in the second direction under the pulling of the pull cord to balance the tension of the two pull cords.

[0005] In some embodiments, the balancing component includes an elastic element, which is connected to the middle of each of the pull ropes in the second direction.

[0006] In some embodiments, the balancing component includes two hook portions, one hook portion is connected to each side of the elastic element, and the middle portion of each pull rope is connected to the elastic element through the hook portion.

[0007] In some embodiments, the main body is provided with a mounting groove along the second direction, and the balancing component is movably disposed in the mounting groove.

[0008] In some embodiments, the curtain assembly includes a guide assembly connected to the main body, the guide assembly including two guide members disposed on both sides of the curtain in the second direction, each guide member having a first guide groove extending along the first direction; the movable assembly includes a pull rod and two sliding members, the pull rod extending along the second direction and connected to the curtain, each sliding member being connected to the pull rod and the first guide groove, the sliding member cooperating with the first guide groove to drive the pull rod to move in the first direction.

[0009] In some embodiments, each of the guide members has a second guide groove extending along the first direction; the curtain is disposed in the light-transmitting area; the curtain device includes two limiting members spaced apart along the second direction, each limiting member connecting the curtain and the second guide groove, the limiting member and the second guide groove cooperating to block the two sides of the light-transmitting area in the second direction.

[0010] In some embodiments, the curtain device further includes a take-up and release assembly, which includes a first winding member and two second winding members coaxially arranged. The two ends of the first winding member are respectively connected to the two second winding members in the second direction. The first winding member is used to wind the curtain fabric, and the two second winding members are used to wind the two pull cords respectively. The first winding member winds the curtain fabric in a clockwise direction along the axial direction of the take-up and release assembly, and the second winding members wind the pull cords in a counterclockwise direction along the axial direction of the take-up and release assembly; or, the first winding member winds the curtain fabric in a counterclockwise direction along the axial direction of the take-up and release assembly, and the second winding members wind the pull cords in a clockwise direction along the axial direction of the take-up and release assembly.

[0011] In some embodiments, the curtain device includes a plurality of steering wheels connected to the main body, the pull cord extending from the take-up and release assembly and connected to the movable assembly, and the plurality of steering wheels being disposed on the connection path of the pull cord.

[0012] In some embodiments, the curtain device further includes a limiting clamp connected to the main body, the limiting clamp being located on both sides of the curtain assembly in a second direction, the limiting clamp forming a limiting hole through which the pull cord passes.

[0013] This application also provides a vehicle including the aforementioned curtain device.

[0014] This application discloses a curtain device and vehicle, which have the following advantages: The frame has a main body and a light-transmitting area connected to the main body; the curtain assembly includes a curtain and a movable component, the movable component connecting the curtain and the main body respectively, and the movable component being used to move relative to the main body along a first direction; the pull cord assembly includes a balancing component and two pull cords, the balancing component being connected to the frame, and each end of the balancing component in a second direction intersecting the first direction being connected to the middle of a pull cord, the first end of each pull cord being connected to the movable component, and the second end of each pull cord being used to receive external force to pull the movable component, thereby moving the curtain in the first direction, wherein the middle of the pull cord is located between the first end and the second end of the pull cord, and the connection between the balancing component and the pull cord can change its position in the second direction under the pull of the pull cord to balance the tension of the two pull cords. When the second end of the pull cord is pulled, the first end of the pull cord drives the movable component to move along the first direction, thereby moving the curtain to change the light-blocking area of ​​the light-transmitting area. During the pulling process, if there is a difference in the tension of the two pull ropes, the connection between the balancing component and the pull rope will be displaced in the second direction. By adjusting its own position, it balances the tension on both sides, thereby ensuring that the force on both sides of the moving component is uniform. This effectively avoids the problem of asynchronous movement of the curtain on both sides due to factors such as component tolerance or large frame span, and ensures that the curtain can move smoothly and steadily along the first direction.

[0015] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. 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. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0018] Figure 1 This is a first structural schematic diagram of a curtain device according to an embodiment of the present utility model;

[0019] Figure 2 This is a second structural schematic diagram of a curtain device according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the balancing component in an embodiment of this utility model;

[0021] Figure 4This is an assembly diagram of the sliding component and the guide component in an embodiment of this utility model;

[0022] Figure 5 This is an assembly diagram of the sliding component, guide member, and curtain fabric in an embodiment of this utility model;

[0023] Figure 6 This is an assembly diagram of the retractable component, curtain, and pull cord in an embodiment of this utility model;

[0024] Figure 7 This is an assembly diagram of the universal wheel, pull rope, and main body in an embodiment of this utility model;

[0025] Figure 8 This is an assembly diagram of the limiting clamp, pull rope, and main body in an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Frame; 110. Main body; 111. Mounting slot; 112. First frame section; 113. Second frame section; 114. Third frame section; 115. Fourth frame section; 120. Light-transmitting area; 200. Curtain assembly; 210. Curtain; 220. Movable assembly; 221. Pull rod; 222. Sliding component; 230. Limiting component; 300. Pull cord assembly; 310. Balancing component; 311. Sound insulation component; 312. Elastic element; 313, hook part; 320, pull rope; 321, first end; 322, second end; 323, connection point; 400, guide assembly; 410, guide element; 411, first guide groove; 412, second guide groove; 500, take-up and release assembly; 510, first winding element; 520, second winding element; 600, steering wheel; 700, limiting clamp; 710, limiting hole; X1, first direction; X2, second direction. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] In existing vehicle curtain systems, the curtain moves along the light-transmitting area of ​​the window frame to change the light-blocking area. However, the curtain system may experience asynchronous movement on both sides due to factors such as large span on the frame and component tolerances. Therefore, there is an urgent need for a curtain system that can overcome the limitations of frame span and adjust component tolerances.

[0032] To solve the above-mentioned technical problems, this application provides a curtain device, referring to... Figure 1 and Figure 2 The device includes a frame 100, a curtain assembly 200, and a pull cord assembly 300. The frame 100 has a light-transmitting area 120. The pull cord assembly 300 is connected to the curtain assembly 200 and moves on the frame 100 to block the light-transmitting area 120 of the frame 100. It can change the blocking area of ​​the light-transmitting area 120, thereby adjusting the light-transmitting area and light-transmitting region of the light-transmitting area 120.

[0033] In some implementations, refer to Figure 1 and Figure 2The curtain 210 of the curtain device can be retracted and extended via the retraction component 500: when the retraction component is rotated, the curtain 210 moves along the main body 110 to unfold and retract, blocking 0-100% of the light-transmitting area 120. In other embodiments, the area of ​​the curtain 210 can be set to be smaller than the total area of ​​the light-transmitting area 120, and the travel range of the frame 100 can be set to be equivalent to the length or width of the light-transmitting area 120. The curtain device can move on the frame 100 to block only a part of the light-transmitting area 120. When the curtain device moves on the frame 100, it can selectively block the side area or the central area of ​​the light-transmitting area 120 to meet the light-blocking needs in different scenarios.

[0034] In some implementations, refer to Figure 1 and Figure 2 The frame 100 has a main body 110 and a light-transmitting area 120 connected to the main body 110; the curtain assembly 200 includes a curtain 210 and a movable assembly 220, the movable assembly 220 being connected to the curtain 210 and the main body 110 respectively, and the movable assembly 220 being used to move relative to the main body 110 along a first direction X1; the pull cord assembly 300 includes a balancing member 310 and two pull cords 320, the balancing member 310 being connected to the frame 100, and the two ends of the balancing member 310 being connected to a second direction X2 intersecting the first direction X1 respectively. In the middle of a pull cord 320, the first end 321 of each pull cord 320 is connected to the movable component 220, and the second end 322 of each pull cord 320 is used to receive external force to pull the movable component 220 to move the curtain 210 in the first direction X1. The middle of the pull cord 320 is located between the first end 321 and the second end 322 of the pull cord 320. The connection 323 between the balancing component 310 and the pull cord 320 can change its position in the second direction X2 under the pull of the pull cord 320 to balance the pulling force of the two pull cords 320. When the second end 322 of the pull cord 320 is pulled, the first end 321 of the pull cord 320 drives the movable component 220 to move along the first direction X1, thereby driving the curtain 210 to move to change the light-blocking area of ​​the light-transmitting area 120. During the pulling of the pull cord 320, if there is a difference in the tension of the pull cords 320 on both sides, the connection 323 between the balancing component 310 and the pull cord 320 will generate a corresponding displacement in the second direction X2. By adjusting its own position, it balances the tension on both sides, thereby ensuring that the moving component 220 is subjected to uniform force on both sides. This effectively avoids the problem of asynchronous movement of the curtain 210 on both sides due to factors such as component tolerance or large span of the frame 100, and ensures that the curtain 210 can move smoothly and steadily along the first direction X1.

[0035] In some implementations, refer to Figure 1 and Figure 2The main body 110 of the frame 100 includes a first frame portion 112, a second frame portion 113, a third frame portion 114, and a fourth frame portion 115. The first frame portion 112 and the third frame portion 114 extend along a first direction X1, and the second frame portion 113 and the fourth frame portion 115 extend along a second direction X2. The first frame portion 112, the second frame portion 113, the third frame portion 114, and the fourth frame portion 115 are sequentially connected and surround each other, forming a light-transmitting area 120 on the radially inner side. The first frame portion 112, the second frame portion 113, the third frame portion 114, and the fourth frame portion 115 can be integrated with the roof assembly. A light-transmitting element can be movably installed in the light-transmitting area 120. The light-transmitting element can be selected from tempered glass, tempered plastic, etc., depending on the actual situation. The opening area of ​​the light-transmitting area 120 can be changed by the light-transmitting element, and the blocking area of ​​the light-transmitting area 120 can also be changed by the curtain device.

[0036] In some implementations, the area of ​​the curtain 210 can be set according to the actual situation, as shown in the following figure. Figure 1 and Figure 2 When the curtain 210 of the curtain device is retracted or extended using the retraction components, the area of ​​the curtain 210 is larger than the area of ​​the light-transmitting area 120; when the curtain 210 can selectively block an area of ​​the light-transmitting area 120, the area of ​​the curtain 210 is smaller than the area of ​​the light-transmitting area 120. The curtain 210 can be made of at least one of blackout fabric, semi-transparent gauze, or reflective material to meet different blackout and light transmission needs. Blackout fabric can effectively block direct sunlight and is suitable for scenarios that require a darker environment; semi-transparent gauze can allow some light to pass through while ensuring a certain degree of privacy, creating a soft lighting atmosphere; reflective material can reflect sunlight, reduce heat accumulation inside the vehicle, and improve interior comfort. In addition, the surface of the curtain 210 can be treated with waterproof and stain-resistant materials to enhance its durability and ease of cleaning. For example, the curtain 210 may include a nano-coating, making the surface of the curtain 210 less prone to dust and stains, facilitating daily maintenance.

[0037] In some implementations, refer to Figure 1 and Figure 2 The length of the pull cord 320 is determined by the displacement length of the curtain 210 in the first direction X1, so as to at least satisfy the requirement that the curtain 210 moves from one area of ​​the frame 100 to another in the first direction X1. The first direction X1 is the front-rear direction of the vehicle, that is, the direction of travel of the vehicle, and the second direction X2 is the left-right direction of the vehicle, that is, the direction perpendicular to the direction of travel on the horizontal plane.

[0038] In some implementations, refer to Figure 1 and Figure 2In the second direction X2, the balancing component 310 and the frame 100 are at least partially movable. Specifically, the middle part of the balancing component 310 is fixed to the frame 100, and the two sides are movably connected to the frame 100, with the two sides of the balancing component 310 connected to the pull rope 320; alternatively, the entire balancing component 310 can be movably connected to the frame 100, with the two sides of the balancing component 310 connected to the pull rope 320. With the above design, at least the connection point 323 between the balancing component 310 and the pull rope 320 can change its position in the second direction X2 when pulled by the pull rope 320.

[0039] In some implementations, refer to Figure 1 and Figure 2 Taking the unfolding of the curtain 210 in the first direction X1 as an example, if the diameter of one pull cord 320 is slightly larger than the diameter of the other pull cord 320, or if one pull cord 320 is slightly offset from the curtain 210 relative to the other pull cord 320 in the second direction X2, errors may occur in the pull cords 320. When both pull cords 320 are subjected to the same tension, the pull cord 320 on the side with the larger cumulative tolerance may generate a greater displacement velocity on the movable component 220. In this case, on the side of the pull cord 320 with the larger cumulative tolerance, the connection 323 moves away from the center to reduce the tension on the corresponding side of the movable component 220, thereby slowing down the movement speed of the corresponding side of the movable component 220; on the side of the pull cord 320 with the smaller cumulative tolerance, the connection 323 moves closer to the center to increase the tension on the corresponding side of the movable component 220, thereby accelerating the movement speed of the corresponding side of the movable component 220, so that both sides of the movable component 220 move synchronously in the first direction X1. Similarly, the curtain 210 can also move synchronously when it is retracted. This design allows the balancing component 310 to balance the tension of the two pull ropes 320.

[0040] In some implementations, refer to Figure 2 and 3 The balancing component 310 includes an elastic element 312, which is connected to the middle of each pull cord 320 in the second direction X2. The elastic element 312 is telescopically arranged along the second direction X2. When the tension of the pull cords 320 on both sides is uneven, the position of the connection 323 between the balancing component 310 and the pull cords 320 is adjusted by the deformation of the elastic element 312, thereby balancing the tension of the pull cords 320 on both sides. The elastic element 312 can be made of materials with good elastic recovery properties, such as springs or elastic rubber. The elastic coefficient of the spring can be set according to factors such as the weight of the curtain 210 and the moving resistance of the moving component 220, to ensure that the elastic element 312 can respond sensitively to changes in tension and produce corresponding deformation during normal use, effectively balancing the tension difference of the pull cords 320 on both sides.

[0041] In some implementations, refer to Figure 2 and 3The balancing component 310 includes a sound insulation component 311, which is used to balance the elastic component 312 and the frame 100, thereby reducing the knocking noise of the two colliding and reducing vehicle hazard. The sound insulation component 311 may be configured as a sound insulation tube, which is fitted onto the elastic component 312.

[0042] In some implementations, refer to Figure 2 and 3 The balancing component 310 includes two hook portions 313. One hook portion 313 is connected to each side of the elastic element 312, and the middle of each pull rope 320 is connected to the elastic element 312 via the hook portion 313. The hook portion 313 hooks onto the pull rope 320, allowing the pull rope 320 to move relative to the balancing component 310. Specifically, the hook portion 313 can be configured as a ring structure. The pull rope 320 passes through the ring structure and connects to the elastic element 312. When the pull rope 320 is subjected to tension, it can slide freely within the hook portion 313, avoiding excessive friction between the pull rope 320 and the balancing component 310, ensuring smooth force transmission. Simultaneously, the inner wall of the hook portion 313 can be smoothed, such as by applying a wear-resistant coating or using a low-friction coefficient material, further reducing wear on the pull rope 320 during sliding and extending its service life.

[0043] In some implementations, refer to Figure 2 The main body 110 has a mounting groove 111 along the second direction X2, and the balancing component 310 is movably disposed in the mounting groove 111. The extension direction of the mounting groove 111 is consistent with the second direction X2, providing guidance and limiting for the movement of the balancing component 310 in the second direction X2, preventing the balancing component 310 from deviating or wobbling during movement, and ensuring that it can stably adjust the tension of the pull ropes 320 on both sides. The size of the mounting groove 111 is set according to the size of the spring, and a sound-absorbing pad is set in the mounting groove 111. The sound-absorbing pad is made of felt material, which can reduce the risk of spring wobbling. Furthermore, a sound-insulating component 311 is also disposed in the mounting groove 111 to further isolate the mounting groove 111 and the elastic component 312.

[0044] In some implementations, refer to Figure 2 The curtain assembly includes a guide assembly 400 connected to the main body 110, as shown in the reference. Figure 4 The guide assembly 400 includes two guide members 410 disposed on both sides of the curtain 210 in the second direction X2. Figure 1 As shown, the movable component 220, the second border portion 113, and the fourth border portion 115 extend along the second direction X2. The movable component 220 moves along the first border portion 112 and the third border portion 114 along the first direction X1, in conjunction with... Figure 2As shown, the first frame portion 112 and the third frame portion 114 are respectively provided with guide members 410 to cooperate with the movable component 220 to increase the stability and convenience of the movable component 220.

[0045] In some implementations, refer to Figure 4 and Figure 5 Each guide member 410 has a first guide groove 411 extending along a first direction X1. The movable component 220 includes a pull rod 221 and two sliding members 222. The pull rod 221 extends along a second direction X2 and connects to the curtain 210. Each sliding member 222 is connected to the pull rod 221 and the first guide groove 411, and is used to drive the pull rod 221 to move in the first guide groove 411. By sliding the sliding member 222 in the first guide groove 411, the pull rod 221 can move smoothly along the first direction X1, thereby driving the curtain 210 to unfold or retract. Specifically, one end of the sliding member 222 is provided with a snap-fit ​​hole for snapping the end of the pull cord 320, and the other end extends in the second direction X2 and is inserted into the pull rod 221. The sliding member 222 and the first guide groove 411 can be fitted with a clearance to reduce frictional resistance during movement. At the same time, a ball or roller structure can be provided on the surface of the sliding member 222 to further improve the smoothness of sliding. The pull rod 221 can be made of lightweight, high-strength alloy materials, such as aluminum alloy or magnesium alloy, to reduce the overall weight while ensuring structural strength, thereby reducing the inertia of the moving component 220 during movement and making the unfolding and closing of the curtain 210 easier and less strenuous. Furthermore, the connection between the pull rod 221 and the curtain 210 can be detachable, such as via clips or Velcro, facilitating the removal, cleaning, or replacement of the curtain 210. When the curtain 210 is damaged or needs to be replaced with a different material or color, the user can quickly complete the replacement operation, improving the flexibility and ease of maintenance of the curtain device.

[0046] In some implementations, refer to Figure 4 and Figure 5Each guide member 410 has a second guide groove 412 extending along a first direction X1; the curtain 210 is disposed in the light-transmitting area 120; the curtain device includes two limiting members 230 spaced apart along a second direction X2, each limiting member 230 connecting the curtain 210 and the second guide groove 412, the limiting member 230 and the second guide groove 412 cooperating to block the two sides of the light-transmitting area 120 in the second direction X2. The limiting member 230 can be a slider or roller structure, which slides in cooperation with the second guide groove 412, and drives the two sides of the curtain 210 to move synchronously along the second guide groove 412 during the unfolding or closing of the curtain 210, so as to prevent the curtain 210 from shifting or wrinkling in the second direction X2. Furthermore, the connection position between the limiting member 230 and the curtain fabric 210 can be adjusted according to the material and size of the curtain fabric 210. For example, for a thinner curtain fabric 210, reinforcing ribs can be provided at its edges, and the limiting member 230 can be connected to the reinforcing ribs to enhance the connection strength and prevent the curtain fabric 210 from tearing due to uneven force during movement. Wear-resistant lining strips can be provided on the inner wall of the second guide groove 412 to reduce frictional wear between the limiting member 230 and the guide groove, extending their service life.

[0047] In some implementations, refer to Figure 6The curtain device also includes a take-up and release assembly 500, which includes a first winding member 510 and two second winding members 520 coaxially arranged. The two ends of the first winding member 510 are respectively connected to the two second winding members 520 in the second direction X2. The first winding member 510 is used to wind the curtain 210, and the two second winding members 520 are used to wind the two pull cords 320 respectively. The first winding member 510 winds the curtain 210 in a clockwise direction along the axial direction of the take-up and release assembly 500, and the second winding members 520 wind the pull cords 320 in a counterclockwise direction along the axial direction of the take-up and release assembly 500; or, the first winding member 510 winds the curtain 210 in a counterclockwise direction along the axial direction of the take-up and release assembly 500, and the second winding members 520 wind the pull cords 320 in a clockwise direction along the axial direction of the take-up and release assembly 500. This design allows the first winding element 510 and the second winding element 520 to be linked through the same drive source. When the retraction assembly 500 rotates, the winding direction of the curtain 210 is opposite to that of the pull cord 320, thus synchronizing the unfolding and retraction of the curtain 210. For example, when the first winding element 510 rotates clockwise to wind the curtain 210, the second winding element 520 rotates counterclockwise to release the pull cord 320, at which point the curtain 210 retracts, and the light-blocking area of ​​the light-transmitting zone 120 decreases; conversely, when the first winding element 510 rotates counterclockwise to release the curtain 210, the second winding element 520 rotates clockwise to wind the pull cord 320, causing the curtain 210 to unfold and increasing the light-blocking area of ​​the light-transmitting zone 120. This coaxial linkage structure not only simplifies the overall structure of the curtain device, reduces the number of parts, and lowers assembly difficulty and cost, but also effectively ensures the coordination and synchronization of the curtain 210's unfolding and retraction with the pull cord 320's winding.

[0048] In some implementations, refer to Figure 6The first winding element 510 is a winding shaft, the length of which in the second direction X2 is approximately equal to the length of the curtain fabric 210 in the second direction X2. The second winding element 520 is a conical wheel, with its diameter gradually decreasing from the side closest to the winding shaft to the side furthest away. This design allows the free end of the curtain fabric 210 to move at a constant speed in the first direction X1. When the curtain fabric 210 unfolds, because the winding radius of the curtain fabric 210 gradually decreases as it unfolds, even though the free end of the curtain fabric 210 unfolds at a constant speed, the rotational speed of the winding shaft gradually decreases. As the curtain fabric 210 continues to unfold, the unwinding diameter of the second winding element 520 gradually decreases, and its linear velocity decreases accordingly. At the same time, the rotational speed of the winding shaft also decreases due to the decrease in the winding radius of the curtain fabric 210. The speed change trends of the two elements match each other, thus ensuring that the free end of the curtain fabric 210 maintains a constant speed throughout the entire unfolding process. Similarly, as the curtain 210 is retracted, the winding radius of the winding shaft gradually increases, and the rotational speed decreases accordingly. Meanwhile, the second winding element 520 takes in the thread through its smaller diameter end. As the thread is taken in, its winding diameter gradually increases, and the linear speed increases accordingly, adapting to the change in the rotational speed of the winding shaft, thus achieving uniform retraction of the free end of the curtain 210. This conical wheel structure cleverly balances the influence of the radius change on the speed during the winding of the curtain 210, avoiding sudden changes in speed when the curtain 210 is unfolded or retracted, and improving the smoothness and comfort of user operation. In addition, the surface of the conical wheel can be provided with anti-slip textures or made of a material with a high coefficient of friction to increase the friction between it and the pull cord 320, preventing the pull cord 320 from slipping during the winding process, further ensuring the accuracy and reliability of the transmission.

[0049] In some embodiments, the retraction assembly 500 further includes a drive motor connected to at least one second winding member 520 to drive the second winding member 520 to rotate about the axial direction of the retraction assembly 500. The drive motor can be a DC geared motor, whose output speed and torque can be matched according to the weight of the curtain 210, the required moving speed, and the reduction ratio of the transmission structure to ensure sufficient power to drive the curtain 210 to move smoothly. To improve ease of operation, the curtain device can also be equipped with a control module and operation buttons. The user sends commands to the control module by pressing the operation buttons, and the control module controls the drive motor to rotate forward, reverse, or stop according to the commands, realizing the electric unfolding and retraction of the curtain 210. The curtain device can also be designed with a manual operation mode, with a clutch structure between the drive motor and the second winding member 520. When manual operation is required, the user can disengage the drive motor from the second winding member 520 by switching the clutch. At this time, the second end 322 of the pull rope 320 can be pulled directly to manually control the movement of the curtain 210, ensuring that the curtain device can be used normally under any circumstances.

[0050] In some implementations, refer to Figure 7The curtain device includes multiple steering wheels 600 connected to the main body 110. A pull rope 320 extends from the retraction assembly 500 and connects to the movable assembly 220. The steering wheels 600 are positioned along the connection path of the pull rope 320. The steering wheels 600 can be flexibly arranged according to the direction of the pull rope 320 and the installation space. By changing the extension direction of the pull rope 320, it can avoid interference from other components inside the vehicle, achieving a smooth connection between the retraction assembly 500 and the movable assembly 220. The wheel body of the steering wheel 600 can be made of wear-resistant engineering plastic or metal, and its surface can be provided with annular grooves. The pull rope 320 is embedded in the grooves to prevent it from falling off or shifting during turning. The connection between the steering wheel 600 and the main body 110 can use a bearing structure to reduce the frictional resistance when the steering wheel 600 rotates, ensuring that the pull rope 320 can turn flexibly during movement and reducing power loss. Furthermore, the position of the steering wheel 600 can be adjusted according to actual assembly requirements, for example, by connecting it to the main body 110 through an elongated hole or an adjustable bracket, so that the tension and direction of the pull rope 320 can be finely adjusted during installation to ensure the overall performance of the curtain device. In addition, the steering wheel 600 can also prevent the pull rope 320 from interfering with the frame 100, reduce the wear of the pull rope 320, and give the pull rope 320 a longer service life.

[0051] In some implementations, refer to Figure 8 The curtain assembly also includes a limiting clamp 700 connected to the main body 110. The limiting clamp 700 is located on both sides of the curtain assembly 200 in the second direction X2, forming a limiting hole 710 through which the pull rope 320 passes. The diameter of the limiting hole 710 is slightly larger than the diameter of the pull rope 320 to guide the movement of the pull rope 320, preventing it from deviating in the second direction X2 and ensuring stable transmission of tension. The connection between the limiting clamp 700 and the main body 110 can be designed to be detachable, for example, fixed by screws or clips, facilitating disassembly and maintenance when the pull rope 320 wears out or needs replacement. The location of the limiting clamp 700 can be rationally planned according to the direction of the pull rope 320, typically positioned on the straight section after the pull rope 320 turns, to maximize its guiding and limiting functions, further improving the stability and reliability of the curtain assembly operation.

[0052] This application also provides a vehicle including the aforementioned curtain device.

[0053] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A curtain device, characterized in that, include: A frame having a main body and a light-transmitting area connected to the main body; A curtain assembly includes a curtain and a movable component, the movable component being connected to the curtain and the main body, and the movable component being used to move relative to the main body along a first direction; A pull cord assembly includes a balancing component and two pull cords. The balancing component is connected to the frame. The two ends of the balancing component in a second direction intersecting the first direction are respectively connected to the middle of one of the pull cords. The first end of each pull cord is connected to the movable component, and the second end of each pull cord is used to receive external force to pull the movable component and move the curtain in the first direction. The middle of each pull cord is located between the first end and the second end of the pull cord. The connection between the balancing component and the pull cord can change its position in the second direction under the pull of the pull cord to balance the tension of the two pull cords.

2. The curtain device according to claim 1, characterized in that, The balancing component includes an elastic element, which is connected to the middle of each of the pull ropes in the second direction.

3. The curtain device according to claim 2, characterized in that, The balancing component includes two hooks, one hook is connected to each side of the elastic element, and the middle of each pull rope is connected to the elastic element through the hook.

4. The curtain device according to claim 1, characterized in that, The main body is provided with a mounting groove along the second direction, and the balancing component is movably disposed in the mounting groove.

5. The curtain device according to claim 1, characterized in that, The curtain device includes a guide assembly connected to the main body, the guide assembly including two guide members disposed on both sides of the curtain in the second direction, each guide member having a first guide groove extending along the first direction; The movable component includes a pull rod and two sliding members. The pull rod extends along the second direction and is connected to the curtain. Each sliding member is connected to the pull rod and the first guide groove. The sliding member cooperates with the first guide groove to drive the pull rod to move in the first direction.

6. The curtain device according to claim 5, characterized in that, Each of the guide members has a second guide groove extending along the first direction; the curtain is disposed in the light-transmitting area; the curtain device includes two limiting members spaced apart along the second direction, each limiting member connecting the curtain and the second guide groove, the limiting member and the second guide groove cooperating to block the two sides of the light-transmitting area in the second direction.

7. The curtain device according to claim 1, characterized in that, The curtain device further includes a winding and unwinding assembly, which includes a first winding member and two second winding members arranged coaxially. The two ends of the first winding member are respectively connected to the two second winding members in the second direction. The first winding member is used to wind the curtain fabric, and the two second winding members are used to wind the two pull cords respectively. The first winding member winds the curtain fabric in a clockwise direction along the axial direction of the winding and unwinding assembly, and the second winding members wind the pull cords in a counterclockwise direction along the axial direction of the winding and unwinding assembly; or, the first winding member winds the curtain fabric in a counterclockwise direction along the axial direction of the winding and unwinding assembly, and the second winding members wind the pull cords in a clockwise direction along the axial direction of the winding and unwinding assembly.

8. The curtain device according to claim 7, characterized in that, The curtain device includes a plurality of steering wheels connected to the main body, and the pull cord extends from the take-up and release assembly and is connected to the movable assembly. The plurality of steering wheels are located on the connection path of the pull cord.

9. The curtain device according to claim 1, characterized in that, The curtain device further includes a limiting clamp connected to the main body, the limiting clamp being located on both sides of the curtain assembly in a second direction, the limiting clamp forming a limiting hole, and the pull cord passing through the limiting hole.

10. A vehicle, characterized in that, Includes the curtain device according to any one of claims 1 to 9.

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