Volute spiral spring load assembly and free hovering curtain applying same

Abstract

The utility model discloses a volute spiral spring load assembly which comprises a balance force component and a load component, the load component comprises a connecting shaft and at least one load exerting body, the connecting shaft is connected with the balance force component, the load exerting body is in contact with the connecting shaft, and when the load exerting body rotates relative to the connecting shaft, the load exerting body exerts load on the connecting shaft. And applying resistance to the connecting shaft. The utility model further discloses a free hovering curtain which comprises the volute spiral spring load assembly. Compared with the prior art, the balance force adjusting device can adjust balance force.

Description

Technical Field

[0001] The utility model relates to the technical field of curtain accessories, in particular to a scroll spring load component and a free-suspending curtain using the component. Background Art

[0002] Patent number CN201922411348.0 discloses a balancing force assembly for cordless curtains, which discloses the following technical solution: A balancing force assembly for cordless curtains, relating to the field of cordless curtain accessories, includes a coil spring guard, a coil spring shaft, and a spring. The coil spring guard includes an end, two reinforcing ribs, and a fixed disc. One end of each of the two reinforcing ribs is fixedly connected to the end, and the two reinforcing ribs are arranged correspondingly. A plurality of fixed discs are equidistantly arranged between the two reinforcing ribs, and the center of each fixed disc is provided with a perforation. The spring is spiral-shaped, and one end located at the center of the spring has a mounting hole, and the other end located at the outside is bent with an arc-shaped buckle. According to the utility model, the spring can automatically balance the elastic force according to the length of the curtain being pulled down, so that the elastic force and the weight of the curtain being pulled out are offset, so that the device can stably and reliably output torque to the outside, achieving the purpose of fixing the curtain length. At the same time, the number of springs installed can be adjusted according to the weight of the curtain, so that the torque generated by the multiple springs can be adapted to the weight of the curtain.

[0003] In actual production, precisely balancing the weight of curtains requires preparing a variety of springs of varying specifications for selection based on actual conditions. This means manufacturers need to produce and store a large number of spare springs, increasing production costs and management complexity. Furthermore, in practice, the weight of curtains can vary depending on factors such as material and thickness, making subtle adjustments difficult to achieve with existing designs. Consequently, in some cases, even with the appropriate spring replacement, achieving the desired balance may not be achieved.

[0004] Furthermore, since the performance parameters of each spring (such as the spring constant) are fixed and difficult to change once selected, this limits the flexibility of the system to some extent. For those who want to adjust the curtain state according to seasonal changes or personal preferences, this lack of adjustability is obviously not user-friendly.

[0005] In summary, although existing cordless curtain balancing force assemblies have solved the problems of traditional curtains to a certain extent, they still face many challenges in practical application. In view of this, a scroll spring load assembly and a free-hovering curtain using the assembly are proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a scroll spring load component and a free-suspending curtain using the component, which can realize the adjustment of the balancing force.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions:

[0008] A scroll spring load assembly includes a balancing force component and a load component, wherein the load component includes a connecting shaft and at least one load applying body, wherein the connecting shaft is connected to the balancing force component, and the load applying body contacts the connecting shaft and applies resistance to the connecting shaft when the load applying body rotates relative to the connecting shaft.

[0009] In a preferred embodiment, the load applying body includes a sleeve and a load mounting plate, the load mounting plate is provided with a load slot, the load mounting plate is arranged on the side of the sleeve, and the sleeve is sleeved on the connecting shaft for applying resistance to the connecting shaft when relative rotation occurs with the connecting shaft.

[0010] In a preferred embodiment, the load applying body includes two load mounting plates, and the two load mounting plates are respectively provided at two ends of the sleeve.

[0011] In a preferred embodiment, a damping member is provided between the inner wall of the sleeve and the outer wall of the connecting shaft, and the damping member is provided on the inner wall of the sleeve or the outer wall of the connecting shaft.

[0012] In a preferred embodiment, the damping member is configured to be sheet-shaped, and includes an adhesive layer and a damping layer provided on the adhesive layer, and the adhesive layer is adhered to the inner wall of the sleeve or the outer wall of the connecting shaft.

[0013] In a preferred embodiment, the adhesive layer is made of non-woven fabric, plastic or resin material, and the damping layer is made of fiber material.

[0014] In a preferred embodiment, a damping member is provided on the outer wall of the connecting shaft. The damping member is configured in a sheet shape and extends from one end of the connecting shaft to the other end.

[0015] In a preferred embodiment, a plurality of damping members are provided and are evenly distributed around the connecting shaft.

[0016] In a preferred embodiment, the balancing force component includes a scroll spring shaft, multiple balancing force mounting plates, a reinforcing rod, multiple scroll springs and terminals. The multiple balancing force mounting plates and terminals are arranged in a straight line to form a columnar structure. A balancing force slot is provided on the balancing force mounting plate. The scroll spring shaft passes through the multiple balancing force mounting plates and the terminals. The reinforcing rod connects the multiple balancing force mounting plates and the terminals. The multiple scroll springs are installed on the scroll spring shaft.

[0017] A free-hover curtain comprises the scroll spring load assembly.

[0018] Compared to the prior art, the present invention provides a scroll spring load assembly for freely suspended curtains, commonly known as cordless curtains. During use, the assembly is installed within the curtain's aluminum tube. A load-applying element applies resistance to the rotation of a connecting shaft, which is connected to a balancing force component that balances the weight of the curtain. Without the load component, balancing the weight of different curtains requires scroll springs of various sizes. With the load component installed, damping can be applied to adjust the balancing force of the balancing force component within a specific area, thereby reducing the required spring size, lowering production costs, and improving the curtain's adaptability to various conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram (first viewing angle) of a scroll spring load assembly according to the present invention.

[0020] Figure 2 This is a structural schematic diagram of a scroll spring load assembly according to the present invention (second perspective).

[0021] Figure 3 The utility model is a schematic diagram of the disassembled structure of a scroll spring load component.

[0022] Figure 4 It is a structural schematic diagram of a load component of a scroll spring load assembly (containing only one load applying body) according to the utility model.

[0023] Figure 5 The utility model is a schematic diagram of the longitudinal cross-section structure of a damping member of a scroll spring load assembly.

[0024] In the picture

[0025] Connecting shaft 1; shaft slot 2; damping member 3; adhesive layer 4; damping layer 5; load applying body 6; sleeve 7; load mounting plate 8; load slot 9; applying body slot 10; applying body block 11; scroll spring shaft 12; shaft block 13; balancing force mounting plate 14; balancing force slot 15; reinforcing rod 16; terminal 17; connecting block 18. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below with reference to the accompanying drawings.

[0027] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0028] like Figures 1 to 5 As shown, a scroll spring load assembly includes a balancing force component and a load component, wherein the load component includes a connecting shaft 1 and at least one load applying body 6, wherein the connecting shaft 1 is connected to the balancing force component, and the load applying body 6 contacts the connecting shaft 1 and applies resistance to the connecting shaft 1 when relative rotation occurs therewith.

[0029] This embodiment provides a scroll spring load assembly for freely suspended curtains, commonly known as cordless curtains. During use, it is installed within the curtain's aluminum tube. A load-applying element 6 applies resistance to the rotation of a connecting shaft 1. This connecting shaft 1 is connected to a balancing force component, which balances the weight of the curtain. Without the load component, balancing the weight of different curtains requires scroll springs of various sizes. With the load component installed, damping can be applied to adjust the balancing force of the balancing force component within a specific area, thereby reducing the required spring size, lowering production costs, and improving the curtain's adaptability.

[0030] Specifically, the load-applying body 6 includes a sleeve 7 and a load-mounting plate 8. The load-mounting plate 8 is provided with a load-receiving slot 9. The load-mounting plate 8 is disposed on the side of the sleeve 7. The sleeve 7 is mounted on the connecting shaft 1 and is configured to apply resistance to the connecting shaft 1 when the sleeve 7 rotates relative to the connecting shaft 1. During operation, when the curtain rises or falls, the balancing force member is activated. The activation of the balancing force member causes the connecting shaft 1 and the sleeve 7 to rotate relative to each other. Since the sleeve 7 is mounted on the connecting shaft 1, it applies resistance to the rotation of the connecting shaft 1, thereby applying the load.

[0031] Adjustment of different loads can be achieved by adjusting the number of load applying bodies 6 .

[0032] In the above structural setting, the load card slot 9 is used to cooperate with the card block in the curtain aluminum tube to achieve the installation and fixation of the load mounting plate 8.

[0033] Furthermore, in order to effectively maintain the stability of the structure, the load applying body 6 includes two load mounting plates 8 , and the two load mounting plates 8 are respectively provided at both ends of the sleeve 7 .

[0034] When there are more than two load applying bodies 6, in order to ensure the stability of the structure, the load applying bodies 6 need to be connected into one body, and the following special settings are provided: one end of the sleeve 7 is provided with an applying body slot 10, and the other end is provided with an applying body block 11 that can cooperate with the applying body slot 10. The connection between the applying body slot 10 and the applying body block 11 is achieved by the cooperation between the applying body slot 10 and the applying body block 11.

[0035] Furthermore, the applying body card slot 10 is connected to the edge of the load mounting plate 8 , thereby facilitating the sliding in of the applying body card block 11 .

[0036] Furthermore, a chamfer or rounded corner is provided on the top of one end of the application body block 11 , and chamfers or rounded corners are provided on both sides of the chamfer or rounded corner to facilitate smooth entry of the application body block 11 .

[0037] Furthermore, the side of the applying body block 11 is tilted, the applying body slot 10 is adapted to the shape of the applying body block 11, and the applying body block 11 and the applying body slot 10 form a dovetail joint structure, thereby achieving a stable connection between adjacent load applying bodies 6.

[0038] In order to further improve the stability of the structure, more than two application body clamping blocks 11 and more than two application body clamping slots 10 are provided, and the more than two application body clamping slots 10 are provided in parallel.

[0039] To achieve a good damping effect, a damping member 3 is provided between the inner wall of the sleeve 7 and the outer wall of the connecting shaft 1. The damping member 3 is provided on the inner wall of the sleeve 7 or the outer wall of the connecting shaft 1. The provision of the damping member 3 achieves damping. Specifically, when the sleeve 7 and the connecting shaft 1 rotate relative to each other, the damping member 3 applies resistance to the inner wall of the sleeve 7 or the outer wall of the connecting shaft 1, thereby generating damping.

[0040] Specifically, the damping member 3 is configured to be sheet-shaped, and includes an adhesive layer 4 and a damping layer 5 provided on the adhesive layer 4 . The adhesive layer 4 is adhered to the inner wall of the sleeve 7 or the outer wall of the connecting shaft 1 .

[0041] Specifically, the adhesive layer 4 is made of non-woven fabric, plastic or resin material, and the damping layer 5 is made of fiber material. In actual applications, the materials of the adhesive layer 4 and the damping layer 5 are not limited to the materials listed in the embodiment, as long as they can achieve their functional purposes.

[0042] In this embodiment, the damping member 3 is provided on the outer wall of the connecting shaft 1 . The damping member 3 is configured in a sheet shape and extends from one end of the connecting shaft 1 to the other end.

[0043] In order to achieve structural stability, a plurality of damping members 3 are provided and are evenly distributed around the connecting shaft 1 .

[0044] Furthermore, the balancing force component includes a scroll spring shaft 12, multiple balancing force mounting plates 14, a reinforcing rod 16, multiple scroll springs, and a terminal 17. The multiple balancing force mounting plates 14 and the terminal 17 are arranged in a straight line to form a columnar structure. The balancing force mounting plates 14 are provided with a balancing force slot 15. The scroll spring shaft 12 passes through the multiple balancing force mounting plates 14 and the terminal 17. The terminal 17 is a component connected to the curtain fixing bracket. The reinforcing rod 16 connects the multiple balancing force mounting plates 14 and the terminal 17. The multiple scroll springs are mounted on the scroll spring shaft 12. During use, the balancing force component and the load structure are integrated and installed together in the curtain aluminum tube. The block in the curtain aluminum tube cooperates with the balancing force slot 15 and the load slot 9. The scroll spring is used to provide the main balancing function, and the load component is used to adjust the balancing force.

[0045] In order to realize the connection between the balancing force component and the load component, a shaft clamping block 13 is provided at one end of the spiral spring shaft 12, and a shaft clamping groove 2 is provided on the connecting shaft 1. The shaft clamping groove 2 passes through the end surface of the connecting shaft 1, and the shaft clamping block 13 cooperates with the shaft clamping groove 2.

[0046] One end of the balancing force member is provided with a connecting block 18 , and the connecting block 18 is matched with the applying body slot 10 adjacent thereto.

[0047] In order to maintain the stability of the structure, more than two connecting blocks 18 are provided.

[0048] Furthermore, the side of the shaft clamp block 13 connecting the clamp block 18 is set at an angle, the shaft clamp block 13 and the shaft clamp groove 2 are adapted to each other, the application body clamp groove 10 and the connecting clamp block 18 are adapted to each other, the shaft clamp block 13 and the shaft clamp groove 2 form a dovetail tenon matching structure, and the connecting clamp block 18 and the application body clamp groove 10 form a dovetail tenon matching structure.

[0049] In order to enable the connecting block 18 to smoothly enter the application body slot 10 and the shaft block 13 to smoothly enter the shaft slot 2, the top of one end of the connecting block 18 and the shaft block 13 is provided with a chamfer or fillet, and chamfers or fillets are provided on both sides of the chamfer or fillet.

[0050] Through the above structural arrangement, the connecting shaft 1 and the scroll spring shaft 12 are stably connected, and the balancing force mounting plate 14 and the load applying body 6 are stably connected.

[0051] This embodiment also provides a free-hovering curtain, comprising the scroll spring loading assembly, wherein the scroll spring loading assembly is arranged in an aluminum tube of the curtain.

[0052] The above description of the embodiments is intended to facilitate understanding and use of the present invention by those skilled in the art. It is apparent that those skilled in the art can readily make various modifications to the embodiments and apply the general principles described herein to other embodiments without requiring creative effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should fall within the scope of protection of the present invention.

Claims

1. A scroll spring load assembly, characterized in that: The load-applying member comprises a balancing force component and a load component, wherein the load component comprises a connecting shaft and at least one load-applying body. The connecting shaft is connected to the balancing force component, and the load-applying body contacts the connecting shaft and applies resistance to the connecting shaft when the load-applying body rotates relative to the connecting shaft.

2. A scroll spring load assembly according to claim 1, characterized in that: The load applying body includes a sleeve and a load mounting plate, the load mounting plate is provided with a load slot, the load mounting plate is arranged on the side of the sleeve, and the sleeve is sleeved on the connecting shaft and is used to apply resistance to the connecting shaft when relative rotation occurs with the connecting shaft.

3. A scroll spring load assembly according to claim 2, characterized in that: The load applying body includes two load mounting plates, and the two load mounting plates are respectively arranged at two ends of the sleeve.

4. The scroll spring load assembly according to claim 2, characterized in that: A damping member is provided between the inner wall of the sleeve and the outer wall of the connecting shaft, and the damping member is provided on the inner wall of the sleeve or the outer wall of the connecting shaft.

5. A scroll spring load assembly according to claim 4, characterized in that: The damping member is configured to be sheet-shaped and includes an adhesive layer and a damping layer disposed on the adhesive layer. The adhesive layer is adhered to the inner wall of the sleeve or the outer wall of the connecting shaft.

6. The scroll spring load assembly according to claim 5, characterized in that: The adhesive layer is made of non-woven fabric, plastic or resin material, and the damping layer is made of fiber material.

7. The scroll spring load assembly according to claim 2, characterized in that: A damping member is provided on the outer wall of the connecting shaft. The damping member is configured in a sheet shape and extends from one end of the connecting shaft to the other end.

8. A scroll spring load assembly according to claim 4 or 7, characterized in that: There are multiple damping members, which are evenly distributed around the connecting shaft.

9. The scroll spring load assembly according to claim 1, characterized in that: The balancing force component includes a scroll spring shaft, multiple balancing force mounting plates, a reinforcing rod, multiple scroll springs and terminals. The multiple balancing force mounting plates and terminals are arranged in a straight line to form a columnar structure. A balancing force slot is provided on the balancing force mounting plate. The scroll spring shaft passes through the multiple balancing force mounting plates and the terminals. The reinforcing rod connects the multiple balancing force mounting plates and the terminals. The multiple scroll springs are installed on the scroll spring shaft.

10. A free-hanging curtain, characterized in that: A scroll spring loading assembly comprising the scroll spring loading assembly according to any one of claims 1 to 9.

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