Roller shutter winding and unwinding device

Abstract

The utility model relates to a roller shutter winding and unwinding device which comprises a bearing assembly, a roller shutter winding and unwinding assembly and a roller shutter winding and unwinding assembly. The rolling wheel is used for winding a roller shutter rope; the roller shutter rope is used for connecting a shutter body; the power assisting assembly is mounted on the bearing assembly; the power assisting assembly comprises a spring box, a balance wheel set, a reel, a power assisting wheel and a traction rope. The balance wheel set is connected with the reel in an engaged mode so as to drive the reel to rotate forwards and backwards. One end of the traction rope is wound on the reel, and the other end of the traction rope is wound on the power-assisted wheel, so that the reel can drive the power-assisted wheel to rotate, and then the rotating shaft is synchronously driven to rotate, so that the curtain body is retracted and released. The roller shutter winding and unwinding device is simple in structure and convenient to use, the power-assisted wheel is coaxially connected with the rotating shaft, the balance wheel set, the reel and the traction rope can be used for driving the power-assisted wheel and the rotating shaft to rotate, automatic winding and unwinding of the roller shutter body are assisted, manpower and electric power are saved, and convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling curtain retraction and extension, in particular to a rolling curtain retraction and extension device. Background Art

[0002] A rolling curtain is a type of window decoration product. The curtain fabric is processed with resin and rolled into a drum shape. It is raised and lowered by a pull rope or a chain. The operation is simple and convenient. It has a beautiful and concise appearance, making the window frame look clean and neat, and making the whole room look spacious and simple.

[0003] Traditional rolling curtain devices usually rely on electric motors or manual methods for operation, and their limitations are gradually emerging. First of all, although the electric motor-driven rolling curtain is easy to operate, its long-term operation not only increases the household energy consumption cost, but also may cause inconvenience due to power failures; while for the manually operated rolling curtain at large windows or high windows, users need to continuously pull the pull rope, which requires a large amount of manpower and is very inconvenient. Summary of the Utility Model

[0004] Based on this, the utility model provides a rolling curtain retraction and extension device, which has a simple structure and is easy to use. By coaxially connecting the driving wheel to the rotating shaft, the balance wheel group, the winding wheel and the traction rope can drive the driving wheel and the rotating shaft to rotate, facilitating the automatic retraction and extension of the curtain body, saving manpower and electricity, and greatly improving the convenience.

[0005] In order to achieve the purpose of the utility model, the following technical scheme is adopted:

[0006] A rolling curtain retraction and extension device, comprising:

[0007] A bearing assembly, including a bearing box, a rotating shaft rotatably installed below the bearing box, and winding wheels coaxially installed at opposite ends of the rotating shaft; the winding wheels are used for winding the rolling curtain rope, and the rolling curtain rope is used for connecting the curtain body; and

[0008] A driving assembly installed on the bearing assembly; the driving assembly includes a spring box installed on the bottom surface of the bearing box, a balance wheel group rotatably installed inside one end of the spring box, a winding wheel rotatably installed inside the other end of the spring box, a driving wheel coaxially installed on the rotating shaft, and a traction rope for connecting the winding wheel and the driving wheel; the balance wheel group is meshed and connected with the winding wheel to drive the forward and reverse rotation of the winding wheel; one end of the traction rope is wound on the winding wheel, and the other end of the traction rope is wound on the driving wheel, so that the winding wheel can drive the driving wheel to rotate, and then synchronously drive the rotating shaft to rotate, so that the curtain body is retracted and extended.

[0009] The above rolling curtain retraction and extension device has a simple structure and is easy to use. By coaxially connecting the driving wheel to the rotating shaft, the balance wheel group, the winding wheel and the traction rope can drive the driving wheel and the rotating shaft to rotate, facilitating the automatic retraction and extension of the curtain body, saving manpower and electricity, and greatly improving the convenience.

[0010] In one embodiment, the balance wheel group includes a first balance wheel rotatably mounted inside a spring box, a second balance wheel rotatably mounted on one side of the first balance wheel, and a scroll spring; one end of the scroll spring is fixedly connected to the first balance wheel, and the other end of the scroll spring is fixedly connected to the second balance wheel.

[0011] In one embodiment, the first balance wheel is meshed with the second balance wheel, and the second balance wheel is meshed with a winding wheel.

[0012] In one embodiment, the balance wheel group includes a second balance wheel rotatably mounted in a spring box and on opposite sides of the first balance wheel, and two scroll springs; one end of each scroll spring is fixedly connected to the first balance wheel, and the other end of each scroll spring is fixedly connected to the second balance wheel.

[0013] In one embodiment, the first balance wheel is meshed with the second balance wheel, and one of the second balance wheels is meshed with a winding wheel.

[0014] In one embodiment, the spring box includes a box body mounted on the bottom surface of a bearing box and a cover plate that matches and covers the box body; a through hole is provided at one end of the box body for a towing rope to pass through. Description of the Drawings

[0015] Figure 1 Is a three-dimensional schematic diagram of a rolling curtain retracting and deploying device according to an embodiment of the present invention;

[0016] Figure 2 Is Figure 1 An exploded schematic diagram of the rolling curtain retracting and deploying device shown;

[0017] Figure 3 Is Figure 2 An exploded schematic diagram of the boosting assembly in the rolling curtain retracting and deploying device shown;

[0018] Figure 4 Is Figure 3 Another perspective exploded schematic diagram of the boosting assembly in the rolling curtain retracting and deploying device shown;

[0019] Figure 5 Is Figure 3 A partial cross-sectional view of the boosting assembly in the rolling curtain retracting and deploying device shown;

[0020] Figure 6 Is Figure 1 An assembled schematic diagram of the rolling curtain retracting and deploying device and the curtain body shown;

[0021] Figure 7 Is an exploded schematic diagram of the boosting assembly in a rolling curtain retracting and deploying device according to another embodiment of the present invention.

[0022] Explanation of the reference numerals in the drawings:

[0023] 10 - Bearing assembly, 11 - Bearing box, 12 - Rotating shaft, 13 - Winding wheel, 14 - Rolling curtain rope, 15 - Curtain body;

[0024] 20 - Boosting assembly, 21 - Spring box, 211 - Box body, 212 - Cover plate, 213 - Through hole, 22 - Balancing wheel set, 221 - First balancing wheel, 222 - Second balancing wheel, 223 - Volute spring, 23 - Winding wheel, 24 - Boosting wheel, 25 - Traction rope. Detailed implementation manners

[0025] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0028] Please refer to Figures 1 to 7 , which is a rolling curtain retracting and extending device according to an embodiment of the present utility model, including a bearing assembly 10 and a boosting assembly 20 installed on the bearing assembly 10.

[0029] The bearing assembly 10 includes a bearing box 11, a rotating shaft 12 rotatably installed below the bearing box 11, and winding wheels 13 coaxially installed at opposite ends of the rotating shaft 12. Among them, as Figure 6 shown, the winding wheel 13 is used for winding the rolling curtain rope 14, and the rolling curtain rope 14 is used for connecting the curtain body 15. In actual use, the winding wheel 13 has an excellent retracting and extending function for the rolling curtain rope 14, ensuring that the lengths of the rolling curtain ropes 14 on opposite sides of the curtain body 15 are the same, and further ensuring that when the curtain body 15 is retracted and extended, the opposite sides of the curtain body 15 remain at the same height, preventing the curtain body 15 from tilting.

[0030] The assisting component 20 includes a spring box 21 installed on the bottom surface of the bearing box 11, a balance wheel set 22 rotatably installed inside one end of the spring box 21, a winding wheel 23 rotatably installed inside the other end of the spring box 21, an assisting wheel 24 coaxially installed on the rotating shaft 12, and a traction rope 25 for connecting the winding wheel 23 and the assisting wheel 24. Among them, the balance wheel set 22 is meshed and connected with the winding wheel 23 to drive the forward and reverse rotation of the winding wheel 23. Specifically, one end of the traction rope 25 is wound around the winding wheel 23, and the other end of the traction rope 25 is wound around the assisting wheel 24, so that the winding wheel 23 can drive the assisting wheel 24 to rotate, and then synchronously drive the rotating shaft 12 to rotate, so that the curtain body 15 is retracted and extended.

[0031] In this embodiment, the spring box 21 includes a box body 211 installed on the bottom surface of the bearing box 11, and a cover plate 212 that matches and covers the box body 211. Among them, a through hole 213 is provided at one end of the box body 211, and the through hole 213 is used for the traction rope 25 to pass through.

[0032] As Figures 3 to 5 shown, in this embodiment, the balance wheel set 22 includes a first balance wheel 221 rotatably installed inside the spring box 21, a second balance wheel 222 rotatably installed on one side of the first balance wheel 222, and a volute spring 223; one end of the volute spring 223 is fixedly connected to the first balance wheel 221, and the other end of the volute spring 223 is fixedly connected to the second balance wheel 222, so that the volute spring 222 can transfer and wind up between the first balance wheel 221 and the second balance wheel 222, realizing the dynamic transfer and accumulation of the spring force between the first balance wheel 221 and the second balance wheel 222. Among them, the first balance wheel 221 is meshed and connected with the second balance wheel 222, and the second balance wheel 222 is meshed and connected with the winding wheel 23.

[0033] When the curtain body 15 is pulled down by an external force, the combined action of the external force and the gravity of the curtain body 15 breaks through the critical point of the elastic potential energy of the scroll spring 223. This action is converted into the linear motion of the traction rope 25 through the rotation of the rotating shaft 12, thereby driving the winding wheel 23 to rotate synchronously. This rotational force is transmitted sequentially to the second balance wheel 222 and the first balance wheel 221 through the gear meshing mechanism, causing the two to rotate synchronously. During this process, the scroll spring 223 begins to gradually release from the first balance wheel 221 and wind onto the second balance wheel 222, realizing the storage and transfer of energy. As the curtain body 15 continues to fall, the energy storage state of the scroll spring 223 reaches a critical turning point, that is, the energy stored in the spring part located on the second balance wheel 222 cancels out the energy stored in the spring part located on the first balance wheel 221. The total energy stored in the balance wheel group 22 is less than the gravitational potential energy of the curtain body 15. At this time, even if the external force is removed, it does not affect the continuous fall of the curtain body 15. Finally, with the assistance of its own gravity, the curtain body 15 smoothly and smoothly descends to the lowest position. At this time, the gravitational potential energy of the curtain body 15 is balanced with the elastic potential energy newly stored in the scroll spring 223, realizing the complete unfolding of the curtain body 15. It should be noted that the scroll spring 223 is not completely wound onto the second balance wheel 222, but is in a similar S shape and unfolds between the second balance wheel 222 and the first balance wheel 221.

[0034] Understandably, when the curtain body 15 is lifted by an external force, the gravitational potential energy of the curtain body 15 is less than the elastic potential energy stored in the external force and the scroll spring 223. The scroll spring 223 automatically returns to its original state, rotates through the second balance wheel 222, the first balance wheel 221 and the winding wheel 23, drives the rotating shaft 12 to rotate in the reverse direction, and winds the rolling curtain rope 14 onto the winding wheel 13 until the curtain body 15 is completely retracted. At this time, the scroll spring 223 completely returns to its original state and is wound onto the first balance wheel 221.

[0035] As Figure 7 shown, in other embodiments, the balance wheel group 22 includes a first balance wheel 221 rotatably installed inside the spring box 21, second balance wheels 222 rotatably installed on opposite sides of the first balance wheel 221, and two scroll springs 223; one end of each scroll spring 223 is fixedly connected to the first balance wheel 221, and the other end of each scroll spring 223 is fixedly connected to the second balance wheel 222, enabling the scroll spring 222 to transfer and wind between the first balance wheel 221 and the second balance wheel 222, realizing the dynamic transfer and storage of the spring force between the first balance wheel 221 and the second balance wheel 222. The first balance wheel 221 and the second balance wheel 222 are meshed and connected, and one of the second balance wheels 222 is meshed and connected to the winding wheel 23.

[0036] The above-mentioned rolling curtain retracting and deploying device has a simple structure and is convenient to use. The power assist wheel 24 is coaxially connected to the rotating shaft 12, and the balance wheel group 22, the winding wheel 23 and the traction rope 25 can be used to drive the power assist wheel 24 and the rotating shaft 2 to rotate, facilitating the automatic retraction and deployment of the curtain body 15, saving manpower and electricity, and greatly improving convenience.

[0037] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0038] The above-mentioned embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A rolling curtain retracting and extending device, characterized in that, Comprising: A bearing assembly, including a bearing box, a rotating shaft rotatably installed below the bearing box, and winding wheels coaxially installed at opposite ends of the rotating shaft; The winding wheels are used for winding the rolling curtain rope, and the rolling curtain rope is used for connecting the curtain body; and A boosting assembly installed on the bearing assembly; the boosting assembly includes a spring box installed on the bottom surface of the bearing box, a balance wheel group rotatably installed inside one end of the spring box, a winding wheel rotatably installed inside the other end of the spring box, a boosting wheel coaxially installed on the rotating shaft, and a traction rope for connecting the winding wheel and the boosting wheel; the balance wheel group is meshed and connected to the winding wheel to drive the forward and reverse rotation of the winding wheel; one end of the traction rope is wound on the winding wheel, and the other end of the traction rope is wound on the boosting wheel, so that the winding wheel can drive the boosting wheel to rotate, and further synchronously drive the rotating shaft to rotate, so that the curtain body is retracted and extended.

2. The rolling curtain retracting and deploying device according to claim 1, wherein The balance wheel group includes a first balance wheel rotatably installed inside the spring box, a second balance wheel rotatably installed on one side of the first balance wheel, and a volute spring; one end of the volute spring is fixedly connected to the first balance wheel, and the other end of the volute spring is fixedly connected to the second balance wheel.

3. The rolling curtain retracting and deploying device according to claim 2, wherein, The first balance wheel is meshed and connected to the second balance wheel, and the second balance wheel is meshed and connected to the winding wheel.

4. The rolling curtain retracting and deploying device according to claim 1, characterized in that, The balance wheel group includes a first balance wheel rotatably installed in the spring box, second balance wheels rotatably installed on opposite sides of the first balance wheel, and two volute springs; one end of each volute spring is fixedly connected to the first balance wheel, and the other end of each volute spring is fixedly connected to the second balance wheel.

5. The rolling blind retracting and deploying device according to claim 4, wherein, The first balance wheel is meshed and connected to the second balance wheel, and one of the second balance wheels is meshed and connected to the winding wheel.

6. The rolling curtain retracting and deploying device according to claim 1, characterized in that The spring box includes a box body installed on the bottom surface of the bearing box and a cover plate that matches and covers the box body; a through hole is provided at one end of the box body for the traction rope to pass through.

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