Electric telescopic movable curtain

Abstract

The utility model discloses an electric telescopic moving curtain which comprises a telescopic track, a belt, a main transmission case and an auxiliary transmission case, the main transmission case and the auxiliary transmission case are arranged at the two ends of the telescopic track respectively, and the main transmission case and the auxiliary transmission case are in transmission connection through the belt. Two belt pulleys are arranged in the telescopic track, the two ends of the belt are fixedly connected with the two belt pulleys respectively, and the two belt pulleys are fixedly connected through a belt pulley connecting piece; and the belt pulley drives the curtain sheet to slide along the telescopic track. The two ends of the belt are fixedly connected with the two belt pulleys respectively, the two belt pulleys are fixedly connected through the belt pulley connecting piece, due to the fact that the number of the belt is not one, one end of the belt can be fixed to one belt pulley firstly, and then the other end of the belt is fixed to the other belt pulley after winding is completed; and the operation difficulty is greatly reduced when the belt is mounted and replaced.

Description

Technical Field

[0001] This utility model relates to an electrically retractable sliding curtain. Background Technology

[0002] Curtains, as an indispensable part of home decoration, have long transcended their basic functions of simply blocking light and protecting privacy, becoming an important element in enhancing the aesthetics of the interior. With the popularization of the smart home concept, motorized curtains have gradually become the choice of many families due to their convenience and intelligent features. However, traditional motorized curtains have some inconveniences, especially the size issues during the customization process.

[0003] To address these issues, the industry has developed retractable curtain tracks, which can accommodate windows of different sizes through adjustable retraction. A Chinese patent application (No. 202111682199.7) mentions a belt winding structure that ensures the belt length remains constant and taut during curtain retraction, eliminating the need for trimming excess belt length. However, this also presents problems: after prolonged use, the belt loosens and cannot be adjusted, requiring replacement. Furthermore, since the belt is a single piece, installation or replacement is cumbersome and difficult. Utility Model Content

[0004] The purpose of this invention is to provide an electrically retractable sliding curtain to solve the technical problems mentioned in the background section.

[0005] The technical solution to achieve the purpose of this utility model is: an electric retractable sliding curtain, including a retractable track, a belt, and a main transmission box and a secondary transmission box respectively disposed at both ends of the retractable track. The main transmission box and the secondary transmission box are connected by belt drive. Two belt trolleys are disposed in the retractable track. The two ends of the belt are fixedly connected to the two belt trolleys respectively. The two belt trolleys are fixedly connected by belt trolley connectors. The belt trolleys drive the curtain slats to slide along the retractable track.

[0006] Furthermore, the curtain slat is provided with a curtain slat pulley, and the two belt pulleys are respectively located on both sides of the curtain slat pulley.

[0007] Furthermore, a drive device is provided on the main transmission box, and a main transmission wheel is provided in the main transmission box. The main transmission wheel is located at the output end of the drive device, and the belt passes over the main transmission wheel; an auxiliary transmission wheel is provided in the auxiliary transmission box, and the belt passes over the auxiliary transmission wheel.

[0008] Furthermore, the retractable track includes an outer rail, a middle rail, and an inner rail; the middle rail is slidably connected to the outer rail along the length of the outer rail; the inner rail is slidably connected to the middle rail along the length of the middle rail; one end of the outer rail and the inner rail are fixedly connected to the main transmission box, and one end of the middle rail is fixedly connected to the auxiliary transmission box; the belt trolley slides in the cavity of the middle rail and the inner rail.

[0009] Furthermore, the inner rail includes a first inner rail and a second inner rail arranged in parallel, and the middle rail includes a first middle rail cavity and a second middle rail cavity arranged in parallel. The first inner rail cooperates with the first middle rail cavity, and the second inner rail cooperates with the second middle rail cavity.

[0010] Furthermore, a first fixed pulley is provided at the end of the first inner rail away from the main transmission box, and a second fixed pulley is provided at the end of the first middle rail cavity away from the auxiliary transmission box. The belt passes around the main transmission wheel, the first fixed pulley, the second fixed pulley and the auxiliary transmission wheel in sequence.

[0011] Furthermore, both the first inner rail and the first middle rail cavity are provided with belt grooves. The belt groove in the first inner rail is located close to the second inner rail, while the belt groove in the first middle rail cavity is located away from the second middle rail cavity.

[0012] Furthermore, the belt trolley is located on one side of the second inner rail and the second middle rail cavity.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects:

[0014] (1) The two ends of the belt of this utility model are fixedly connected to two belt pulleys respectively. The two belt pulleys are fixedly connected by belt pulley connectors. Since the belt is not a whole piece, one end of the belt can be fixed to one belt pulley first, and after the winding is completed, the other end of the belt can be fixed to another belt pulley. This greatly reduces the difficulty of operation when installing and replacing the belt.

[0015] (2) The two belt pulleys of this utility model are respectively set on both sides of the curtain pulley. No matter which direction the belt runs, it can drive the curtain pulley to move.

[0016] (3) The belt of this utility model passes through the main drive wheel, the first fixed pulley, the second fixed pulley and the auxiliary drive wheel in sequence. The belt can be kept taut during the curtain's extension and retraction, eliminating the need to cut the belt and reducing the packaging and transportation volume and transportation costs. Attached Figure Description

[0017] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is an exploded view of the present invention.

[0020] Figure 3 This is a cross-sectional view of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0022] The labels in the attached diagram are as follows: Belt 1, Main transmission box 2, Auxiliary transmission box 3, Belt pulley 4, Belt pulley connector 5, Curtain slat 6, Curtain slat pulley 7, Drive unit 8, Main transmission wheel 9, Auxiliary transmission wheel 10, Outer rail 11, Middle rail 12, First middle rail cavity 12-1, Second middle rail cavity 12-2, Inner rail 13, First inner rail 13-1, Second inner rail 13-2, Belt groove 14, First fixed pulley 15, Second fixed pulley 16. Detailed Implementation

[0023] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0029] (Example 1)

[0030] See Figure 1-4 An electric retractable sliding curtain includes a retractable track, a belt 1, and a main drive box 2 and a secondary drive box 3 respectively disposed at both ends of the retractable track. The main drive box 2 and the secondary drive box 3 are connected by the belt 1. Two belt trolleys 4 are disposed in the retractable track. The two ends of the belt 1 are fixedly connected to the two belt trolleys 4 respectively. The two belt trolleys 4 are fixedly connected by belt trolley connectors 5. The belt trolleys 4 drive the curtain slats 6 to slide along the retractable track.

[0031] Specifically, the curtain slat 6 is equipped with a curtain slat pulley 7, and two belt pulleys 4 are respectively located on both sides of the curtain slat pulley 7. Regardless of the direction the belt 1 travels, it can drive the curtain slat pulley 7 to move. The movable curtain slat in this embodiment is prior art; the configuration described in Chinese Patent Application No. 202322352107X can be referenced. The curtain slat pulley 7 located between the two belt pulleys 4 is the first curtain slat during movement.

[0032] A drive unit 8 is installed on the main transmission box 2, and a main drive wheel 9 is installed in the main transmission box 2. The main drive wheel 9 is located at the output end of the drive unit 8, and the belt 1 passes over the main drive wheel 9. A secondary drive wheel 10 is installed in the secondary transmission box 3, and the belt 1 passes over the secondary drive wheel 10.

[0033] The retractable track includes an outer rail 11, a middle rail 12, and an inner rail 13; the middle rail 12 is slidably connected to the outer rail 11 along the length of the outer rail 11; the inner rail 13 is slidably connected to the middle rail 12 along the length of the middle rail 12; one end of the outer rail 11 and the inner rail 13 is fixedly connected to the main transmission box 2, and one end of the middle rail 12 is fixedly connected to the auxiliary transmission box 3; the belt trolley 4 slides in the cavity of the middle rail 12 and the inner rail 13.

[0034] The inner rail 13 includes a first inner rail 13-1 and a second inner rail 13-2 arranged in parallel. The middle rail 12 includes a first middle rail cavity 12-1 and a second middle rail cavity 12-2 arranged in parallel. The first inner rail 13-1 cooperates with the first middle rail cavity 12-1, and the second inner rail 13-2 cooperates with the second middle rail cavity 12-2.

[0035] The first inner rail 13-1 is provided with a first fixed pulley 15 at the end away from the main transmission box 2, and the first middle rail cavity 12-1 is provided with a second fixed pulley 16 at the end away from the auxiliary transmission box 3. The belt 1 passes around the main transmission wheel 9, the first fixed pulley 15, the second fixed pulley 16 and the auxiliary transmission wheel 10 in sequence.

[0036] Both the first inner rail 13-1 and the first middle rail cavity 12-1 are provided with belt grooves 14. The belt groove 14 in the first inner rail 13-1 is located close to the second inner rail 13-2, while the belt groove 14 in the first middle rail cavity 12-1 is located away from the second middle rail cavity 12-2. After the belt 1 passes over the main drive wheel 9, one side enters the belt groove 14 of the first inner rail 13-1, and the other side enters the second inner rail 13-2. Since the belt groove 14 in the first inner rail 13-1 is located close to the second inner rail 13-2, a conventionally sized drive wheel can be used for the main drive wheel 9. At the other end, after the belt 1 passes over the auxiliary drive wheel 10, one side enters the belt groove 14 in the first middle rail cavity 12-1, and the other side enters the second middle rail cavity 12-2. Since the belt groove 14 in the first middle rail cavity 12-1 is far away from the second middle rail cavity 12-2, if a single auxiliary drive wheel 10 is used, the diameter of the auxiliary drive wheel 10 is almost twice that of the main drive wheel 9, and the auxiliary drive box 3 would need to be set to be larger and more abrupt. Therefore, the auxiliary drive wheel 10 uses two pulleys in parallel.

[0037] The belt trolley 4 is located on one side of the second inner rail 13-2 and the second middle rail cavity 12-2. The entire telescopic track can be roughly divided into upper and lower layers. The upper layer is used to thread the belt 1, and the lower layer has a track for the belt trolley 4 and the curtain trolley 7 to slide. On one side of the first inner rail 13-1 and the first middle rail cavity 12-1, due to the presence of the first fixed pulley 15 and the second fixed pulley 16, a partition is used to separate the upper and lower layers. At the same time, the upper layer facilitates the fixing of the first fixed pulley 15 and the second fixed pulley 16, while the track in the lower layer is used for the sliding of the curtain trolley 7. On the side of the second inner rail 13-2 and the second middle rail cavity 12-2, since the belt 1 and the belt trolley 4 need to be fixed, the upper and lower layers are connected.

[0038] In this embodiment, the two ends of the belt 1 are fixedly connected to two belt pulleys 4 respectively. The two belt pulleys 4 are fixedly connected by belt pulley connectors 5. Since the belt 1 is not a whole piece, one end of the belt 1 can be fixed to one belt pulley 4 first, and after the winding is completed, the other end of the belt 1 can be fixed to another belt pulley 4. This greatly reduces the difficulty of operation when installing or replacing the belt 1.

[0039] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electrically powered retractable shade, characterized by: It includes a retractable track, a belt (1), and a main drive box (2) and a secondary drive box (3) respectively located at both ends of the retractable track. The main drive box (2) and the secondary drive box (3) are connected by the belt (1). Two belt trolleys (4) are provided in the retractable track. The two ends of the belt (1) are fixedly connected to the two belt trolleys (4) respectively. The two belt trolleys (4) are fixedly connected by belt trolley connectors (5). The belt trolleys (4) drive the curtain slats (6) to slide along the retractable track.

2. The electric retractable curtain according to claim 1, wherein: The curtain slat (6) is provided with a curtain slat pulley (7), and the two belt pulleys (4) are respectively provided on both sides of the curtain slat pulley (7).

3. The electrically operated retractable shade according to claim 1, wherein: The main transmission box (2) is equipped with a drive device (8), and the main transmission box (2) is equipped with a main transmission wheel (9). The main transmission wheel (9) is located at the output end of the drive device (8), and the belt (1) passes around the main transmission wheel (9). The auxiliary transmission box (3) is equipped with an auxiliary transmission wheel (10), and the belt (1) passes around the auxiliary transmission wheel (10).

4. The electrically operated retractable shade according to claim 1, wherein: The retractable track includes an outer rail (11), a middle rail (12), and an inner rail (13); the middle rail (12) is slidably connected to the outer rail (11) along the length direction of the outer rail (11); the inner rail (13) is slidably connected to the middle rail (12) along the length direction of the middle rail (12); one end of the outer rail (11) and the inner rail (13) is fixedly connected to the main transmission box (2), and one end of the middle rail (12) is fixedly connected to the auxiliary transmission box (3); the belt trolley (4) slides in the cavity of the middle rail (12) and the inner rail (13).

5. The electrically operated retractable shade according to claim 4, wherein: The inner rail (13) includes a first inner rail (13-1) and a second inner rail (13-2) arranged in parallel. The middle rail (12) includes a first middle rail cavity (12-1) and a second middle rail cavity (12-2) arranged in parallel. The first inner rail (13-1) cooperates with the first middle rail cavity (12-1), and the second inner rail (13-2) cooperates with the second middle rail cavity (12-2).

6. A motorized retractable shade according to claim 5, wherein: The first inner rail (13-1) is provided with a first fixed pulley (15) at the end away from the main transmission box (2), and the first middle rail cavity (12-1) is provided with a second fixed pulley (16) at the end away from the auxiliary transmission box (3). The belt (1) passes around the main transmission wheel (9), the first fixed pulley (15), the second fixed pulley (16) and the auxiliary transmission wheel (10) in sequence.

7. The electrically operated retractable shade according to claim 6, wherein: Both the first inner rail (13-1) and the first middle rail cavity (12-1) are provided with belt grooves (14). The belt groove (14) in the first inner rail (13-1) is located close to the second inner rail (13-2), and the belt groove (14) in the first middle rail cavity (12-1) is located away from the second middle rail cavity (12-2).

8. The motorized retractable shade of claim 7, wherein: The belt trolley (4) is located on one side of the second inner rail (13-2) and the second middle rail cavity (12-2).

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