Variable diameter structure of a counterbalancing member and a curtain

Abstract

The utility model discloses a variable diameter structure of balanced force component, including balanced force component body and pad, the pad sets up in the outside of balanced force component body. The utility model discloses a kind of curtains. Compared with prior art, the utility model realizes the diameter of balanced force component adjustable.

Description

Technical Field

[0001] This utility model relates to the field of curtain technology, and in particular to a variable diameter structure of a balancing force component and a curtain. Background Technology

[0002] In the field of cordless curtain technology, the balancing force component, as the core component for enabling cordless curtain raising, lowering, and positioning, is typically installed inside the curtain's aluminum tube. Through the coordinated action of the spring guard, spring shaft, and spring, it balances the weight of the pulled-out portion of the curtain, ensuring the curtain can stably remain in any pulled-out position. In existing balancing force components, the structural dimensions of the spring guard (including the diameter of the fixing disc, the spacing of the reinforcing ribs, etc.) are usually fixed, which limits the overall outer diameter of the entire balancing force component to a specific range.

[0003] In practical applications, cordless curtains of different models and specifications require significantly different inner diameters of their aluminum tubing to adapt to various usage scenarios (such as home windows, commercial shop windows, and office partitions) and to meet varying load-bearing requirements (such as a wide range of fabric materials from lightweight sheer curtains to heavy blackout fabrics). For example, small cordless curtains used for hanging lightweight sheer curtains typically have smaller inner diameter aluminum tubing, while those used for hanging heavy blackout fabrics or larger cordless curtains require larger inner diameter tubing to ensure sufficient structural strength and installation space.

[0004] However, due to the inability to adjust the diameter of existing balancing force components, one specification of balancing force component can only be matched with one inner diameter of curtain aluminum tube. This limitation brings many problems to the production, sales, and installation of cordless curtains: For manufacturers, it is necessary to develop and produce multiple specifications of balancing force components for curtain aluminum tubes with different inner diameters, which not only increases mold development costs, production line adjustment costs, and inventory management costs, but also extends the product development cycle; for retailers, it is necessary to stock multiple specifications of balancing force components to meet the needs of different customers, which occupies a lot of storage space and increases the risk of inventory backlog; for installers or end users, if an incompatible balancing force component is mistakenly matched with the curtain aluminum tube, it may result in the component not being able to be installed smoothly, or even cause the component to sway inside the aluminum tube due to excessive installation gap, affecting the stability of the curtain's opening and closing, and even causing wear and damage to the component during long-term use, shortening the service life of the cordless curtain.

[0005] With the diversification of demand in the cordless curtain market, users are increasingly demanding greater versatility and adaptability of products. Existing fixed-diameter balancing force components can no longer meet the market's needs for cost reduction, efficiency improvement, and enhanced product flexibility. Therefore, developing a variable-diameter balancing force component structure that can achieve diameter adjustment and adapt to various specifications of curtain aluminum tubes has become an urgent technical problem to be solved in the current cordless curtain accessories field. Utility Model Content

[0006] The purpose of this invention is to provide a variable diameter structure for a balancing force component and a curtain, so as to achieve adjustable diameter of the balancing force component.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A variable diameter structure for a force balancing component includes a force balancing component body and a pad, wherein the pad is disposed outside the force balancing component body.

[0008] In a preferred embodiment, there are two or more pads, which are evenly distributed around the circumference of the balancing force member body.

[0009] In a preferred embodiment, the balancing force member body has a groove, and the pad is confined within the groove.

[0010] In a preferred embodiment, the balancing force component body includes a head and a torso connected to each other, the slot includes a first slot located in the head, and the pad is confined in the first slot.

[0011] In a preferred embodiment, the first slot has protrusions on both sides, and the pad body has a locking part corresponding to the protrusions.

[0012] In a preferred embodiment, the pad body is provided with a groove.

[0013] In a preferred embodiment, the slot further includes a second slot located in the torso, and the pad is located in the first slot and the second slot.

[0014] In a preferred embodiment, the first slot is provided with a card slot, and the pad is provided with a card block, which is inserted into the card slot.

[0015] In a preferred embodiment, the pad is configured as a semi-circle.

[0016] A curtain that utilizes the variable diameter structure of the aforementioned balancing force member.

[0017] Compared with existing technologies, the core principle of this utility model lies in constructing a combined diameter adjustment system of "basic body size + incremental pad size" by adding a replaceable pad to the outside of the balancing force component body. The balancing force component body retains the original core structure for achieving the curtain balance function (such as the spring guard, spring shaft, spring, etc.), and its external contour size is designed to fit the basic size of the smallest specification curtain aluminum tube. The pad is preset with various thicknesses or outer diameters according to the difference in inner diameter of different specifications of curtain aluminum tubes. When it is necessary to fit curtain aluminum tubes with larger inner diameters, simply select a pad with the corresponding thickness or outer diameter and install it on the outside of the body. The thickness or outer diameter increment of the pad can make up the gap between the body and the inner diameter of the aluminum tube, so that the overall diameter after combination is precisely matched with the inner diameter of the target aluminum tube. If it is necessary to fit aluminum tubes with smaller inner diameters, the original pad can be removed and the basic body size can be used directly for installation.

[0018] This structure firstly solves the limitation of traditional fixed-diameter components that require "one specification for one aluminum tube." By replacing the pads of different specifications, a single balancing force component can be adapted to curtain aluminum tubes of various inner diameters, significantly reducing the types of molds developed in the production process, lowering manufacturers' R&D costs and inventory pressure. At the same time, the sales end does not need to stock complete components of multiple specifications; it only needs to replenish pads of different specifications to meet diverse needs, saving storage space and capital occupation. Secondly, for installers and end users, there is no need to accurately distinguish the matching specifications of the component and the aluminum tube. They only need to select the corresponding pad according to the inner diameter of the aluminum tube, simplifying the installation process and avoiding installation failures or component damage caused by mismatched specifications. In addition, after installation, the pads can fill the gap between the body and the inner wall of the aluminum tube, reducing the shaking of the component inside the aluminum tube and improving the stability of the curtain during opening and closing. At the same time, the pads can be made of elastic materials (such as rubber and silicone), which can also play a buffering and shock-absorbing role when the component is in operation, reducing wear and extending the service life of the overall component, further ensuring the long-term reliability of cordless curtains. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the variable diameter structure of a force balancing component (first configuration).

[0020] Figure 2 This utility model relates to a variable diameter structure of a force balancing component after disassembling a pad body (first configuration).

[0021] Figure 3 This is a schematic diagram of a variable diameter structure (second configuration) of a force balancing component.

[0022] Figure 4 This utility model relates to a variable diameter structure of a force balancing component after disassembling a pad body (second configuration).

[0023] Figure 5 This is a schematic diagram of a variable diameter structure (third configuration) of a force balancing component.

[0024] Figure 6 This utility model relates to a variable diameter structure of a force balancing component after disassembling a pad body (third configuration).

[0025] Figure 7 This is a schematic diagram of a variable diameter structure (fourth configuration) of a force balancing component.

[0026] Figure 8 This utility model relates to a variable diameter structure of a force balancing component after disassembling a pad body (fourth configuration).

[0027] Balance force component body 1; head 2; first slot 3; slot 4; protrusion 5; torso 6; second slot 7; pad 8; locking part 9; groove 10; locking block 11. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law. Example

[0030] like Figure 1 and Figure 2As shown, a variable diameter structure for a balancing force component includes a balancing force component body 1 and a pad 8, wherein the pad 8 is disposed outside the balancing force component body 1. The core principle of this embodiment of the variable diameter structure for a balancing force component lies in constructing a combined diameter adjustment system of "body base size + pad 8 incremental size" by adding a replaceable pad 8 outside the balancing force component body 1. The balancing force component body 1 retains the original core structure for achieving the curtain balance function (such as the spring guard, spring shaft, spring, etc.). Its external contour dimensions are designed to fit the basic dimensions of the smallest size curtain aluminum tube. The pad body 8 is preset with multiple thicknesses or outer diameters based on the difference in the inner diameter of different sizes of curtain aluminum tubes. When it is necessary to fit a curtain aluminum tube with a larger inner diameter, simply select the pad body 8 with the corresponding thickness or outer diameter and install it on the outside of the body. The increase in the thickness or outer diameter of the pad body 8 can make up for the gap between the body and the inner diameter of the aluminum tube, so that the overall diameter after assembly is precisely matched with the inner diameter of the target aluminum tube. If it is necessary to fit an aluminum tube with a smaller inner diameter, the original pad body 8 can be removed and the basic dimensions of the body can be used directly for installation.

[0031] This structure firstly solves the limitation of traditional fixed-diameter components that require "one specification for one aluminum tube." By replacing the pads 8 with different specifications, a single balancing force component body 1 can be adapted to curtain aluminum tubes with various inner diameters. This significantly reduces the types of molds developed in the production process, lowering manufacturers' R&D costs and inventory pressure. At the same time, the sales end does not need to stock complete components of multiple specifications; it only needs to replenish pads 8 of different specifications to meet diverse needs, saving storage space and capital occupation. Secondly, for installers and end users, there is no need to accurately distinguish the matching specifications of the component and the aluminum tube. They only need to select the corresponding pad 8 according to the inner diameter of the aluminum tube, simplifying the installation process and avoiding installation failures or component damage caused by mismatched specifications. In addition, after installation, the pad 8 can fill the gap between the body and the inner wall of the aluminum tube, reducing the shaking of the component inside the aluminum tube and improving the stability of the curtain during opening and closing. At the same time, the pad 8 can be made of elastic materials (such as rubber or silicone), which can also play a buffering and shock-absorbing role when the component is in operation, reducing wear and extending the service life of the overall component, further ensuring the long-term reliability of cordless curtains.

[0032] In this embodiment, there are two or more pads 8, which are evenly distributed around the circumference of the balancing force component body 1. The multiple and evenly distributed pads 8 ensure a more balanced external force and diameter increase for the balancing force component body 1, preventing localized areas from being too thick or too thin. This results in a tighter fit between the overall structure after diameter change and the inner wall of the curtain aluminum tube, reducing swaying and improving the stability of the curtain's opening and closing. It also disperses the pressure during component operation, reducing localized wear between the pads 8, the aluminum tube, and the body.

[0033] Furthermore, the balancing force component body 1 is provided with a groove, and the pad 8 is confined within the groove. The size and shape of the groove are adapted to the parameters of the pad 8. After the pad 8 is partially embedded, the sidewall of the groove forms a lateral constraint, preventing the pad 8 from sliding circumferentially or shifting axially due to centrifugal force, vibration, etc., during the operation of the body, thus ensuring the stability of the overall diameter after diameter change. The groove improves the firmness of the connection between the pad 8 and the body, avoiding diameter fluctuations and component shaking when there is no groove, ensuring smooth opening and closing of the curtain; and providing a clear positioning reference.

[0034] Furthermore, the balancing force component body 1 includes a head 2 and a torso 6 connected to each other. The slot includes a first slot 3, which is located in the head 2, and the pad 8 is confined in the first slot 3. After the pad 8 is inserted, the side wall of the first slot 3 constrains the pad 8, preventing the pad 8 from shifting due to centrifugal force or other factors when the body is in operation, thus ensuring the diameter stability of the head 2 after it changes diameter.

[0035] Furthermore, the first slot 3 has protrusions 5 on both sides, and the pad 8 has locking parts 9 corresponding to the protrusions 5. The protrusions 5 on both sides of the first slot 3 and the locking parts 9 of the pad 8 cooperate to form a bidirectional locking constraint, preventing the pad 8 from laterally disengaging from the slot and enhancing the limiting stability.

[0036] Furthermore, the pad 8 is provided with a groove 10 for cooperating with the guide and limiting structure on the curtain aluminum tube. Example

[0037] like Figure 3 and Figure 4 As shown, a variable diameter structure for a balancing force component includes a balancing force component body 1 and a pad 8, wherein the pad 8 is disposed outside the balancing force component body 1. The core principle of this embodiment of the variable diameter structure for a balancing force component lies in constructing a combined diameter adjustment system of "body base size + pad 8 incremental size" by adding a replaceable pad 8 outside the balancing force component body 1. The balancing force component body 1 retains the original core structure for achieving the curtain balance function (such as the spring guard, spring shaft, spring, etc.). Its external contour dimensions are designed to fit the basic dimensions of the smallest size curtain aluminum tube. The pad body 8 is preset with multiple thicknesses or outer diameters based on the difference in the inner diameter of different sizes of curtain aluminum tubes. When it is necessary to fit a curtain aluminum tube with a larger inner diameter, simply select the pad body 8 with the corresponding thickness or outer diameter and install it on the outside of the body. The increase in the thickness or outer diameter of the pad body 8 can make up for the gap between the body and the inner diameter of the aluminum tube, so that the overall diameter after assembly is precisely matched with the inner diameter of the target aluminum tube. If it is necessary to fit an aluminum tube with a smaller inner diameter, the original pad body 8 can be removed and the basic dimensions of the body can be used directly for installation.

[0038] This structure firstly solves the limitation of traditional fixed-diameter components that require "one specification for one aluminum tube." By replacing the pads 8 with different specifications, a single balancing force component body 1 can be adapted to curtain aluminum tubes with various inner diameters. This significantly reduces the types of molds developed in the production process, lowering manufacturers' R&D costs and inventory pressure. At the same time, the sales end does not need to stock complete components of multiple specifications; it only needs to replenish pads 8 of different specifications to meet diverse needs, saving storage space and capital occupation. Secondly, for installers and end users, there is no need to accurately distinguish the matching specifications of the component and the aluminum tube. They only need to select the corresponding pad 8 according to the inner diameter of the aluminum tube, simplifying the installation process and avoiding installation failures or component damage caused by mismatched specifications. In addition, after installation, the pad 8 can fill the gap between the body and the inner wall of the aluminum tube, reducing the shaking of the component inside the aluminum tube and improving the stability of the curtain during opening and closing. At the same time, the pad 8 can be made of elastic materials (such as rubber or silicone), which can also play a buffering and shock-absorbing role when the component is in operation, reducing wear and extending the service life of the overall component, further ensuring the long-term reliability of cordless curtains.

[0039] Furthermore, there are two or more pads 8, which are evenly distributed around the circumference of the balancing force component body 1. The multiple and evenly distributed pads 8 ensure a more balanced external force and diameter increase for the balancing force component body 1, preventing localized areas from being too thick or too thin. This results in a tighter fit between the overall structure after the diameter change and the inner wall of the curtain aluminum tube, reducing swaying and improving the stability of the curtain's opening and closing; it also disperses the pressure during component operation, reducing localized wear between the pads 8, the aluminum tube, and the body.

[0040] Furthermore, the balancing force component body 1 is provided with a groove, and the pad 8 is confined within the groove. The size and shape of the groove are adapted to the parameters of the pad 8. After the pad 8 is partially embedded, the sidewall of the groove forms a lateral constraint, preventing the pad 8 from sliding circumferentially or shifting axially due to centrifugal force, vibration, etc., during the operation of the body, thus ensuring the stability of the overall diameter after diameter change. The groove improves the firmness of the connection between the pad 8 and the body, avoiding diameter fluctuations and component shaking when there is no groove, ensuring smooth opening and closing of the curtain; and providing a clear positioning reference.

[0041] Furthermore, the balancing force component body 1 includes a head 2 and a torso 6 connected to each other. The slot includes a first slot 3, which is located in the head 2, and the pad 8 is confined in the first slot 3. After the pad 8 is inserted, the side wall of the first slot 3 constrains the pad 8, preventing the pad 8 from shifting due to centrifugal force or other factors when the body is in operation, thus ensuring the diameter stability of the head 2 after it changes diameter.

[0042] Furthermore, the first slot 3 has protrusions 5 on both sides, and the pad 8 has locking parts 9 corresponding to the protrusions 5. The protrusions 5 on both sides of the first slot 3 and the locking parts 9 of the pad 8 cooperate to form a bidirectional locking constraint, preventing the pad 8 from laterally disengaging from the slot and enhancing the limiting stability.

[0043] Furthermore, the slot also includes a second slot 7, located in the torso 6, with the pad 8 confined within the first slot 3 and the second slot 7. The second slot 7, located in the torso 6, cooperates with the first slot 3 in the head 2 to confine the pad 8, forming a full-area constraint from the head 2 to the torso, preventing local displacement of the pad 8 and ensuring overall diameter stability. This improves the overall integrity and firmness of the pad 8 installation, prevents loosening of the pad 8 during component operation, ensures precise diameter changes, further guarantees smooth curtain opening and closing, and maintains the versatility of diameter changes.

[0044] Furthermore, the pad 8 is provided with a groove 10 for cooperating with the guide and limiting structure on the curtain aluminum tube. Example

[0045] like Figure 5 and Figure 6 As shown, a variable diameter structure for a balancing force component includes a balancing force component body 1 and a pad 8, wherein the pad 8 is disposed outside the balancing force component body 1. The core principle of this embodiment of the variable diameter structure for a balancing force component lies in constructing a combined diameter adjustment system of "body base size + pad 8 incremental size" by adding a replaceable pad 8 outside the balancing force component body 1. The balancing force component body 1 retains the original core structure for achieving the curtain balance function (such as the spring guard, spring shaft, spring, etc.). Its external contour dimensions are designed to fit the basic dimensions of the smallest size curtain aluminum tube. The pad body 8 is preset with multiple thicknesses or outer diameters based on the difference in the inner diameter of different sizes of curtain aluminum tubes. When it is necessary to fit a curtain aluminum tube with a larger inner diameter, simply select the pad body 8 with the corresponding thickness or outer diameter and install it on the outside of the body. The increase in the thickness or outer diameter of the pad body 8 can make up for the gap between the body and the inner diameter of the aluminum tube, so that the overall diameter after assembly is precisely matched with the inner diameter of the target aluminum tube. If it is necessary to fit an aluminum tube with a smaller inner diameter, the original pad body 8 can be removed and the basic dimensions of the body can be used directly for installation.

[0046] This structure firstly solves the limitation of traditional fixed-diameter components that require "one specification for one aluminum tube." By replacing the pads 8 with different specifications, a single balancing force component body 1 can be adapted to curtain aluminum tubes with various inner diameters. This significantly reduces the types of molds developed in the production process, lowering manufacturers' R&D costs and inventory pressure. At the same time, the sales end does not need to stock complete components of multiple specifications; it only needs to replenish pads 8 of different specifications to meet diverse needs, saving storage space and capital occupation. Secondly, for installers and end users, there is no need to accurately distinguish the matching specifications of the component and the aluminum tube. They only need to select the corresponding pad 8 according to the inner diameter of the aluminum tube, simplifying the installation process and avoiding installation failures or component damage caused by mismatched specifications. In addition, after installation, the pad 8 can fill the gap between the body and the inner wall of the aluminum tube, reducing the shaking of the component inside the aluminum tube and improving the stability of the curtain during opening and closing. At the same time, the pad 8 can be made of elastic materials (such as rubber or silicone), which can also play a buffering and shock-absorbing role when the component is in operation, reducing wear and extending the service life of the overall component, further ensuring the long-term reliability of cordless curtains.

[0047] Furthermore, the balancing force component body 1 is provided with a groove, and the pad 8 is confined within the groove. The size and shape of the groove are adapted to the parameters of the pad 8. After the pad 8 is partially embedded, the sidewall of the groove forms a lateral constraint, preventing the pad 8 from sliding circumferentially or shifting axially due to centrifugal force, vibration, etc., during the operation of the body, thus ensuring the stability of the overall diameter after diameter change. The groove improves the firmness of the connection between the pad 8 and the body, avoiding diameter fluctuations and component shaking when there is no groove, ensuring smooth opening and closing of the curtain; and providing a clear positioning reference.

[0048] Furthermore, the balancing force component body 1 includes a head 2 and a torso 6 connected to each other. The slot includes a first slot 3, which is located in the head 2, and the pad 8 is confined in the first slot 3. After the pad 8 is inserted, the side wall of the first slot 3 constrains the pad 8, preventing the pad 8 from shifting due to centrifugal force or other factors when the body is in operation, thus ensuring the diameter stability of the head 2 after it changes diameter.

[0049] Furthermore, the slot also includes a second slot 7, located in the torso 6, with the pad 8 confined within the first slot 3 and the second slot 7. The second slot 7, located in the torso 6, cooperates with the first slot 3 in the head 2 to confine the pad 8, forming a full-area constraint from the head 2 to the torso, preventing local displacement of the pad 8 and ensuring overall diameter stability. This improves the overall integrity and firmness of the pad 8 installation, prevents loosening of the pad 8 during component operation, ensures precise diameter changes, further guarantees smooth curtain opening and closing, and maintains the versatility of diameter changes.

[0050] Furthermore, the pad 8 is provided with a groove 10 for cooperating with the guide and limiting structure on the curtain aluminum tube.

[0051] Furthermore, the first slot 3 is provided with a slot 4, and the pad 8 is provided with a locking block 11, which is inserted into the slot 4. The first slot 3 is provided with a slot 4, and the pad 8 is provided with an appropriate locking block 11. The locking block 11 is inserted into the slot 4 to form a fitting and fixation, which radially strengthens the limiting of the pad 8 and prevents the pad 8 from falling out of the slot. Example

[0052] like Figure 7 and Figure 8 As shown, a variable diameter structure for a balancing force component includes a balancing force component body 1 and a pad 8, wherein the pad 8 is disposed outside the balancing force component body 1. The core principle of this embodiment of the variable diameter structure for a balancing force component lies in constructing a combined diameter adjustment system of "body base size + pad 8 incremental size" by adding a replaceable pad 8 outside the balancing force component body 1. The balancing force component body 1 retains the original core structure for achieving the curtain balance function (such as the spring guard, spring shaft, spring, etc.). Its external contour dimensions are designed to fit the basic dimensions of the smallest size curtain aluminum tube. The pad body 8 is preset with multiple thicknesses or outer diameters based on the difference in the inner diameter of different sizes of curtain aluminum tubes. When it is necessary to fit a curtain aluminum tube with a larger inner diameter, simply select the pad body 8 with the corresponding thickness or outer diameter and install it on the outside of the body. The increase in the thickness or outer diameter of the pad body 8 can make up for the gap between the body and the inner diameter of the aluminum tube, so that the overall diameter after assembly is precisely matched with the inner diameter of the target aluminum tube. If it is necessary to fit an aluminum tube with a smaller inner diameter, the original pad body 8 can be removed and the basic dimensions of the body can be used directly for installation.

[0053] This structure firstly solves the limitation of traditional fixed-diameter components that require "one specification for one aluminum tube." By replacing the pads 8 with different specifications, a single balancing force component body 1 can be adapted to curtain aluminum tubes with various inner diameters. This significantly reduces the types of molds developed in the production process, lowering manufacturers' R&D costs and inventory pressure. At the same time, the sales end does not need to stock complete components of multiple specifications; it only needs to replenish pads 8 of different specifications to meet diverse needs, saving storage space and capital occupation. Secondly, for installers and end users, there is no need to accurately distinguish the matching specifications of the component and the aluminum tube. They only need to select the corresponding pad 8 according to the inner diameter of the aluminum tube, simplifying the installation process and avoiding installation failures or component damage caused by mismatched specifications. In addition, after installation, the pad 8 can fill the gap between the body and the inner wall of the aluminum tube, reducing the shaking of the component inside the aluminum tube and improving the stability of the curtain during opening and closing. At the same time, the pad 8 can be made of elastic materials (such as rubber or silicone), which can also play a buffering and shock-absorbing role when the component is in operation, reducing wear and extending the service life of the overall component, further ensuring the long-term reliability of cordless curtains.

[0054] Furthermore, there are two or more pads 8, which are evenly distributed around the circumference of the balancing force component body 1. The multiple and evenly distributed pads 8 ensure a more balanced external force and diameter increase for the balancing force component body 1, preventing localized areas from being too thick or too thin. This results in a tighter fit between the overall structure after the diameter change and the inner wall of the curtain aluminum tube, reducing swaying and improving the stability of the curtain's opening and closing; it also disperses the pressure during component operation, reducing localized wear between the pads 8, the aluminum tube, and the body.

[0055] Furthermore, the pad 8 is set as a semi-circle, and the two pads 8 encircle the body 1 of the balancing force component. Example

[0056] A curtain that utilizes the variable diameter structure of the balancing force member as described in any one of embodiments one to four.

[0057] The above description of the embodiments is provided to facilitate understanding and use of the present invention by those skilled in the art. It is obvious to those skilled in the art that various modifications can be easily made to the embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments. Any 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 be within the protection scope of the present invention.

Claims

1. A variable diameter structure for a force-balancing component, characterized in that, It includes a balancing force component body and a pad, wherein the pad is disposed outside the balancing force component body.

2. The variable diameter structure of the balancing force member according to claim 1, characterized in that, The pad is provided in two or more parts, and the two or more pads are evenly distributed around the circumference of the balancing force component body.

3. The variable diameter structure of the balancing force member according to claim 1, characterized in that, The balancing force component body is provided with a groove, and the pad is confined in the groove.

4. The variable diameter structure of the balancing force member according to claim 3, characterized in that, The balancing force component body includes a head and a torso that are connected to each other, and the slot includes a first slot located in the head, with the pad body confined in the first slot.

5. The variable diameter structure of the balancing force member according to claim 4, characterized in that, The first slot has protrusions on both sides, and the pad body has a locking part corresponding to the protrusions.

6. The variable diameter structure of the balancing force member according to claim 5, characterized in that, The pad has grooves.

7. The variable diameter structure of the balancing force member according to claim 4, characterized in that, The slot also includes a second slot located in the torso, and the pad is located in the first slot and the second slot.

8. The variable diameter structure of the balancing force member according to claim 7, characterized in that, The first slot is provided with a card slot, and the pad is provided with a card block, which is inserted into the card slot.

9. The variable diameter structure of the balancing force member according to claim 1, characterized in that, The pad is designed to be semi-circular.

10. A curtain, characterized in that, It employs the variable diameter structure of the balancing force member as described in any one of claims 1 to 9.

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