Follower structure of shutter

Abstract

The utility model discloses a follower structure of a shutter. The follower structure comprises a base, an upper roller, a lower roller and a magnet, the magnet is mounted in the third mounting cavity; the base is provided with a spring mounting groove; a first elastic assembly, a second elastic assembly, a first connecting rope and a second connecting rope are mounted in the spring mounting groove; the first elastic assembly is connected with the first end of the first connecting rope, and the second end of the first connecting rope is suitable for penetrating through the first rope penetrating hole to be connected with the first end of the belt. The second elastic assembly is connected with the second end of the second connecting rope, and the second end of the second connecting rope is suitable for penetrating through the second rope penetrating hole to be connected with the second end of the belt. According to the utility model, the tensioning degree between the connecting rope and the belt can be ensured, the transmission reaction in the control process is sensitive and timely, when the spring at one end is pressed to the extreme, enough tension is provided, and the spring at the other end is used for tensioning the belt to circulate, so that the condition of gear skipping between the belt and the upper belt gear or the lower belt gear in the operation process is avoided; and meanwhile, the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blinds, and particularly relates to a follower structure of a blind. Background Art

[0002] A hollow glass blind, also known as an in-built hollow glass blind, is a window belonging to the category of sunshade hollow glass products, which is formed by arranging two glasses (inner glass and outer glass, also called front glass and rear glass) facing each other and sealing the four peripheral parts, and arranging a liftable blind curtain inside. There are two control modes for the in-built hollow glass blind: one is single-handle control; the other is double-handle control. Single-handle control means that the flipping of the blind curtain blades and the lifting of the blind curtain are realized by the cooperation of an external controller and an internal controller. Double-handle control means that two internal controllers and two external controllers respectively control the flipping of the blind curtain blades and the lifting of the blind curtain.

[0003] In the prior art, the lifting of the blind curtain is controlled by an internal controller and an external controller. For example, the utility model with the application number CN201220344250.3 discloses an in-built sunshade device for hollow glass, which includes a rope winding mechanism, a transmission mechanism for controlling the rotation of the rope winding mechanism, and a sunshade mechanism connected to the rope winding mechanism. The rope winding mechanism includes a rope winding shaft, and a group of rope pushing devices are arranged on the rope winding shaft. The transmission mechanism is connected to the rope winding shaft, and the sunshade mechanism is connected to the rope pushing devices. The transmission mechanism includes an upper belt pulley, a lower belt pulley, a belt, an inner handle and an outer handle. The upper belt pulley and the lower belt pulley are respectively positioned by an upper belt pulley support seat and a lower belt pulley support seat. Both ends of the belt are respectively connected to both ends of the inner handle to form a closed loop. However, the inner handle of this structure still has the following problems: both ends of the belt are directly connected to both ends of the inner handle respectively. In order to ensure the tension of the belt, the staff needs to use a large force to tighten the belt during installation and then fasten it to both ends of the inner handle, which has the disadvantage of low assembly efficiency. In addition, once the belt is not fully tightened, it is easy to cause the belt to skip teeth between the upper belt gear or the lower belt gear during operation, resulting in the inclination of the blades during lifting and the inability of the inner and outer handles to move to the preset positions. Summary of the Utility Model

[0004] The present utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the purpose of the present utility model is to provide a follower structure of a shutter, which can ensure the tension between the connecting rope and the belt through the cooperation of the first elastic component and the second elastic component, enable the transmission reaction in the control process to be sensitive and timely, have sufficient pulling force when one end of the spring is pressed to the extreme, and the other end of the spring tensions the belt to circulate, avoiding the situation of gear skipping between the belt and the upper belt gear or the lower belt gear during the operation process. At the same time, the assembly efficiency is improved, and the requirement for the installation force of the staff is reduced.

[0005] One of the purposes of the present utility model is realized by adopting the following technical solution:

[0006] A follower structure of a shutter, comprising a base, an upper roller, a lower roller and a magnet; an upper mounting cavity is provided at the upper part of the outer side surface of the base, a lower mounting cavity is provided at the lower part of the outer side surface of the base, and a middle mounting cavity is provided at the middle part of the outer side surface of the base; the upper roller is rotatably mounted in the upper mounting cavity; the lower roller is rotatably mounted in the lower mounting cavity; the magnet is mounted in the middle mounting cavity;

[0007] A spring mounting groove is provided on the right side surface or the left side surface of the base, a first rope passing hole is opened on the top wall of the spring mounting groove, and a second rope passing hole is opened on the bottom wall of the spring mounting groove;

[0008] A first elastic component, a second elastic component, a first connecting rope and a second connecting rope are mounted in the spring mounting groove; the first elastic component is connected to the first end of the first connecting rope, and the second end of the first connecting rope is adapted to pass through the first rope passing hole and be connected to the first end of the belt; the second elastic component is connected to the second end of the second connecting rope, and the second end of the second connecting rope is adapted to pass through the second rope passing hole and be connected to the second end of the belt.

[0009] In the first aspect of the present utility model, as a preferred embodiment, the first elastic component includes a first spring and a first connecting plug, the first connecting plug includes a first abutting portion and a first inserting portion axially extending from one side of the first abutting portion, the radius of the first abutting portion is greater than the outer diameter of the first spring, and the radius of the first inserting portion is less than the inner diameter of the first spring; the first end of the first spring is connected to the top wall of the spring mounting groove, and its second end is sleeved outside the first inserting portion and abuts against the first abutting portion; the first end of the first connecting rope is connected to the first abutting portion, and its second end sequentially passes through the first spring and the first rope passing hole and is connected to the first end of the belt.

[0010] In the first aspect of the present utility model, as a preferred embodiment, a first receiving groove is provided on the first abutting portion, the first inserting portion has a first through hole, the first end of the first connecting rope is knotted and disposed in the first receiving groove, and its second end sequentially passes through the first through hole, the first spring and the first rope passing hole and is connected to the first end of the belt.

[0011] In the first aspect of the present utility model, as a preferred embodiment, a first guiding seat is provided at the upper end of the base along the height direction, a first guiding hole is provided on the first guiding seat, and the first guiding hole is located at the middle position in the width direction of the base; the first end of the first connecting rope is knotted and disposed in the first receiving groove, and its second end sequentially passes through the first through hole, the first spring, the first rope passing hole and the first guiding hole and is connected to the first end of the belt.

[0012] In the first aspect of the present utility model, as a preferred embodiment, the second elastic component includes a second spring and a second connecting plug, the second connecting plug includes a second abutting portion and a second inserting portion axially extending from one side of the second abutting portion, the radius of the second abutting portion is greater than the outer diameter of the second spring, and the radius of the second inserting portion is less than the inner diameter of the second spring; the first end of the second spring is connected to the top wall of the spring mounting groove, and its second end is sleeved outside the second inserting portion and abuts against the second abutting portion; the first end of the second connecting rope is connected to the second abutting portion, and its second end sequentially passes through the second spring and the second rope passing hole and is connected to the second end of the belt.

[0013] In the first aspect of the present utility model, as a preferred embodiment, a second receiving groove is provided on the second abutting portion, the second inserting portion has a second through hole, the first end of the second connecting rope is knotted and disposed in the second receiving groove, and its second end sequentially passes through the second through hole, the second spring and the second rope passing hole and is connected to the second end of the belt.

[0014] In the first aspect of the present utility model, as a preferred embodiment, a second guiding seat is provided at the upper end of the base along the height direction, a second guiding hole is provided on the second guiding seat, and the second guiding hole is located at the middle position in the width direction of the base; the first end of the second connecting rope is knotted and disposed in the second receiving groove, and its second end sequentially passes through the second through hole, the second spring, the second rope passing hole and the second guiding hole and is connected to the second end of the belt.

[0015] In the first aspect of the present utility model, as a preferred embodiment, at least one partition plate is further provided in the third mounting cavity, and the partition plate divides the third mounting cavity into two or more magnet mounting areas; each of the magnet mounting areas is embedded with the magnet.

[0016] In the first aspect of the present utility model, as a preferred embodiment, the upper roller is hinged to the first installation cavity through an upper rotating shaft, and a part of the upper roller protrudes outwards from the first installation cavity.

[0017] In the first aspect of the present utility model, as a preferred embodiment, the lower roller is hinged to the second installation cavity through a lower rotating shaft, and a part of the lower roller protrudes outwards from the second installation cavity.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] 1. A first elastic component, a second elastic component, a first connecting rope and a second connecting rope are installed in the spring installation groove of the present utility model; in a built-in blind for insulating glass, the belt is a key component of the transmission mechanism and is responsible for transmitting the user's operating force to the rope winding mechanism, thereby driving the lifting and flipping of the blind. However, the tension of the belt has an important impact on the transmission effect. When the belt is subjected to a tensile force, the first elastic component and the second elastic component will automatically adjust their compression degrees according to the magnitude of the tensile force, thereby generating corresponding reaction forces. This reaction force balances the tensile force of the belt, ensuring that the tension of the belt always remains within an appropriate range, enabling the transmission reaction to be sensitive and timely during the operation process. When one end of the spring is compressed to the extreme, there is sufficient tensile force, and the other end of the spring tightens the belt in a cycle, thus avoiding the occurrence of tooth skipping phenomenon. At the same time, this design also improves the assembly efficiency of the staff and reduces the requirements for the installation force of the staff.

[0020] 2. The first elastic component of the present utility model includes a first spring and a first connecting plug. When the belt is subjected to a tensile force, the tensile force will be transmitted to the first abutting portion through the first connecting rope, and then compress the first spring. Since the first spring has elasticity, it will automatically adjust its compression degree according to the magnitude of the tensile force, thereby generating a corresponding reaction force. This reaction force balances the tensile force of the belt, ensuring that the tension of the belt always remains within an appropriate range. The design of the first connecting plug not only provides a stable support point for the first spring, but also ensures that the first spring can be firmly sleeved outside the first plugging portion through its special structural shape. This design enables the first spring not to shift or deform when being compressed, thereby ensuring the stability and reliability of its elastic effect. Due to the stable cooperation between the first spring and the first connecting plug, the belt can maintain a stable tension during the transmission process. This stable tension reduces the friction between the belt and the upper belt gear or the lower belt gear, making the transmission smoother. At the same time, the occurrence of tooth skipping phenomenon is also avoided, improving the transmission effect and the reliability of use.

[0021] 3. The second elastic component of the present utility model includes a second spring and a second connecting plug. When the belt is subjected to a tensile force, the tensile force is transmitted to the second abutting portion through the second connecting rope, and then a compressive effect is exerted on the second spring. Since the second spring has elasticity, it automatically adjusts its compression degree according to the magnitude of the tensile force, thereby generating a corresponding reaction force. This reaction force balances the tensile force of the belt, ensuring that the tension of the belt always remains within an appropriate range. The design of the second connecting plug not only provides a stable support point for the second spring but also ensures that the second spring can be firmly sleeved outside the second plugging portion through its special structural shape. This design enables the second spring not to shift or deform when compressed, thus ensuring the stability and reliability of its elastic effect. Due to the stable cooperation of the second spring and the second connecting plug, the belt can maintain a stable tension during the transmission process. This stable tension reduces the friction between the belt and the upper belt gear or the lower belt gear, making the transmission smoother. At the same time, it also avoids the occurrence of tooth skipping phenomenon, improving the transmission effect and service reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Structural schematic diagram of the follower structure of the louver for the embodiment;

[0023] Figure 2 Another angle structural schematic diagram of the follower structure of the louver for the embodiment;

[0024] Figure 3 Structural schematic diagram of the first elastic component for the embodiment;

[0025] Figure 4 Another angle structural schematic diagram of the first elastic component for the embodiment;

[0026] Figure 5 Structural schematic diagram of the second elastic component for the embodiment;

[0027] Figure 6 Another angle structural schematic diagram of the second elastic component for the embodiment.

[0028] In the figure: 10, base; 11, first installation cavity; 12, second installation cavity; 13, third installation cavity; 131, partition plate; 14, spring installation groove; 141, first rope threading hole; 142, second rope threading hole; 15, first guide seat; 151, first guiding hole; 16, second guide seat; 161, second guiding hole; 20, upper roller; 30, lower roller; 40, magnet; 50, first elastic component; 51, first spring; 52, first connecting plug; 521, first abutting portion; 5211, first accommodating groove; 522, first plugging portion; 5221, first through hole; 60, second elastic component; 61, second spring; 62, second connecting plug; 621, second abutting portion; 6211, second accommodating groove; 622, second plugging portion; 6221, second through hole; 70, first connecting rope; 80, second connecting rope. Detailed implementation manners

[0029] Next, in combination with the accompanying drawings and specific implementation manners, the utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments. Except as otherwise specifically stated, the materials and equipment used in this embodiment can be purchased from the market. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0030] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically and precisely defined.

[0031] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense. For example, it can be a fixed connection, or can be connected through an intermediate medium, or can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0032] In the description and claims of this application and the above-mentioned drawings, terms such as "first" and "second" are used to distinguish similar objects and do not necessarily describe a specific order or sequence. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0033] Please refer to Figure 1-6 As shown, this embodiment provides a follower structure for a shutter, including a base 10, an upper roller 20, a lower roller 30, and a magnet 40; a first mounting cavity 11 is provided in the upper part of the outer side surface of the base 10, a second mounting cavity 12 is provided in the lower part of the outer side surface of the base 10, and a third mounting cavity 13 is provided in the middle part of the outer side surface of the base 10; the upper roller 20 is rotatably mounted in the first mounting cavity 11; the lower roller 30 is rotatably mounted in the second mounting cavity 12; the magnet 40 is mounted in the third mounting cavity 13;

[0034] Specifically, a spring mounting groove 14 is provided on the right side surface of the base 10, a first rope passing hole 141 is provided on the top wall of the spring mounting groove 14, and a second rope passing hole 142 is provided on the bottom wall of the spring mounting groove 14;

[0035] Specifically, a first elastic component 50, a second elastic component 60, a first connecting rope 70, and a second connecting rope 80 are mounted in the spring mounting groove 14; the first elastic component 50 is connected to the first end of the first connecting rope 70, and the second end of the first connecting rope 70 is adapted to pass through the first rope passing hole 141 and be connected to the first end of the belt; the second elastic component 60 is connected to the second end of the second connecting rope 80, and the second end of the second connecting rope 80 is adapted to pass through the second rope passing hole 142 and be connected to the second end of the belt.

[0036] On the basis of the above structure, in an insulating glass with built-in blinds, the belt, as a key component of the transmission mechanism, is responsible for transmitting the user's operating force to the rope winding mechanism, thereby driving the lifting and flipping of the blind curtain. However, the tension of the belt has an important impact on the transmission effect. When the belt is subjected to a tensile force, the first elastic component 50 and the second elastic component 60 will automatically adjust their compression degrees according to the magnitude of the tensile force, thereby generating corresponding reaction forces. This reaction force balances the tensile force of the belt, ensuring that the tension of the belt always remains within an appropriate range, enabling the transmission reaction in the control process to be sensitive and timely. When one end of the spring is compressed to the extreme, there is sufficient tensile force, and the other end of the spring tensions the belt in a cycle, thus avoiding the occurrence of tooth skipping phenomenon. At the same time, this design also improves the assembly efficiency of the staff and reduces the requirements for the installation force of the staff.

[0037] In a preferred embodiment of the present utility model, the first elastic component 50 includes a first spring 51 and a first connecting plug 52. The first connecting plug 52 includes a first abutting portion 521 and a first inserting portion 522 axially extending from one side of the first abutting portion 521. The radius of the first abutting portion 521 is greater than the outer diameter of the first spring 51, and the radius of the first inserting portion 522 is less than the inner diameter of the first spring 51. The first end of the first spring 51 is connected to the top wall of the spring installation groove 14, and its second end is sleeved outside the first inserting portion 522 and abuts against the first abutting portion 521. The first end of the first connecting rope 70 is connected to the first abutting portion 521, and its second end sequentially passes through the first spring 51 and the first rope passing hole 141 and is connected to the first end of the belt.

[0038] On the basis of the above structure, when the belt is subjected to a tensile force, the tensile force will be transmitted to the first abutting portion 521 through the first connecting rope 70, and then a compressive effect will be exerted on the first spring 51. Since the first spring 51 has elasticity, it will automatically adjust its compression degree according to the magnitude of the tensile force, thereby generating a corresponding reaction force. This reaction force balances the tensile force of the belt, ensuring that the tension of the belt always remains within an appropriate range. The design of the first connecting plug 52 not only provides a stable support point for the first spring 51, but also ensures that the first spring 51 can be firmly sleeved outside the first inserting portion 522 through its special structural shape. This design enables the first spring 51 not to shift or deform when being compressed, thus ensuring the stability and reliability of its elastic effect. Due to the stable cooperation of the first spring 51 and the first connecting plug 52, the belt can maintain a stable tension during transmission. This stable tension reduces the friction between the belt and the upper belt gear or the lower belt gear, making the transmission smoother. At the same time, the occurrence of tooth skipping is also avoided, improving the transmission effect and the reliability of use.

[0039] In a preferred embodiment of the present utility model, a first receiving groove 5211 is provided on the first abutting portion 521. The first inserting portion 522 has a first through hole 5221. The first end of the first connecting rope 70 is knotted and disposed in the first receiving groove 5211, and its second end sequentially passes through the first through hole 5221, the first spring 51 and the first rope passing hole 141 and is connected to the first end of the belt. In this way, the first end of the first connecting rope 70 can be conveniently knotted and placed in the first receiving groove 5211, further simplifying the assembly steps.

[0040] In a preferred embodiment of the present utility model, a first guide seat 15 is provided at the upper end of the base 10 in the height direction. A first guiding hole 151 is provided on the first guide seat 15, and the first guiding hole 151 is located at the middle position of the base 10 in the width direction. The first end of the first connecting rope 70 is knotted and disposed in the first receiving groove 5211, and its second end sequentially passes through the first through hole 5221, the first spring 51, the first rope passing hole 141, and the first guiding hole 151 and is connected to the first end of the belt. In this way, the first guiding hole 151 plays a role in stably guiding the first connecting rope 70 to ensure that it does not deviate from the predetermined trajectory during the transmission process.

[0041] In a preferred embodiment of the present utility model, the second elastic component 60 includes a second spring 61 and a second connecting plug 62. The second connecting plug 62 includes a second abutting portion 621 and a second inserting portion 622 axially extending from one side of the second abutting portion 621. The radius of the second abutting portion 621 is greater than the outer diameter of the second spring 61, and the radius of the second inserting portion 622 is smaller than the inner diameter of the second spring 61. The first end of the second spring 61 is connected to the top wall of the spring mounting groove 14, and its second end is sleeved outside the second inserting portion 622 and abuts against the second abutting portion 621. The first end of the second connecting rope 80 is connected to the second abutting portion 621, and its second end sequentially passes through the second spring 61 and the second rope passing hole 142 and is connected to the second end of the belt.

[0042] On the basis of the above structure, when the belt is subjected to a tensile force, the tensile force is transmitted to the second abutting portion 621 through the second connecting rope 80, and then a compressive effect is generated on the second spring 61. Since the second spring 61 has elasticity, it automatically adjusts its compression degree according to the magnitude of the tensile force, thereby generating a corresponding reaction force. This reaction force balances the tensile force of the belt to ensure that the tension of the belt always remains within a suitable range. The design of the second connecting plug 62 not only provides a stable support point for the second spring 61, but also ensures that the second spring 61 can be firmly sleeved outside the second inserting portion 622 through its special structural shape. This design enables the second spring 61 not to shift or deform when compressed, thereby ensuring the stability and reliability of its elastic effect. Due to the stable cooperation of the second spring 61 and the second connecting plug 62, the belt can maintain a stable tension during the transmission process. This stable tension reduces the friction between the belt and the upper belt gear or the lower belt gear, making the transmission smoother. At the same time, the occurrence of tooth skipping is also avoided, improving the transmission effect and the reliability of use.

[0043] In a preferred embodiment of the present utility model, a second receiving groove 6211 is provided on the second abutting portion 621. The second inserting portion 622 has a second through hole 6221. The first end of the second connecting rope 80 is knotted and disposed in the second receiving groove 6211, and its second end sequentially passes through the second through hole 6221, the second spring 61, and the second rope passing hole 142 and is connected to the second end of the belt. In this way, the first end of the second connecting rope 80 can be conveniently knotted and placed in the second receiving groove 6211, further simplifying the assembly steps.

[0044] In a preferred embodiment of the present utility model, a second guiding seat 16 is provided at the upper end of the base 10 in the height direction. A second guiding hole 161 is provided on the second guiding seat 16. The second guiding hole 161 is located at the middle position of the base 10 in the width direction. The first end of the second connecting rope 80 is knotted and disposed in the second receiving groove 6211, and its second end sequentially passes through the second through hole 6221, the second spring 61, the second rope passing hole 142, and the second guiding hole 161 and is connected to the second end of the belt. In this way, the second guiding hole 161 plays a role in stably guiding the second connecting rope 80 to ensure that it does not deviate from the predetermined trajectory during the transmission process.

[0045] In a preferred embodiment of the present utility model, at least one partition plate 131 is further provided in the third installation cavity 13. The partition plate 131 divides the third installation cavity 13 into two or more magnet installation areas. A magnet 40 is embedded in each magnet installation area. In this way, the partition plate 131 plays a key supporting and dividing role in the third installation cavity 13. It not only provides a stable support point for the magnet 40, but also divides the third installation cavity 13 into multiple independent magnet installation areas through its dividing effect, which can avoid the magnetic repulsion between multiple magnets.

[0046] In a preferred embodiment of the present utility model, the upper roller 20 is hinged in the first installation cavity 11 through an upper rotating shaft, and a part of the upper roller 20 protrudes outwards from the first installation cavity 11. Such a design can improve the sliding effect.

[0047] In a preferred embodiment of the present utility model, the lower roller 30 is hinged in the second installation cavity 12 through a lower rotating shaft, and a part of the lower roller 30 protrudes outwards from the second installation cavity 12. Such a design can improve the sliding effect.

[0048] Although only some components and embodiments of the present application have been illustrated and described, many modifications and changes (for example, changes in the size, dimensions, structure, shape and ratio of each component, installation arrangement, material use, color, orientation, etc.) can be conceived by those skilled in the art without actually departing from the scope and spirit of the claims.

[0049] Finally, it should be noted that the above embodiments are only the preferred embodiments of the present utility model, and the scope of protection of the present utility model cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model fall within the scope of protection required by the present utility model.

Claims

1. A follower structure of a blind, comprising a base, an upper roller, a lower roller and a magnet; a first mounting cavity is provided at the upper portion of the outer side surface of the base, a second mounting cavity is provided at the lower portion of the outer side surface of the base, and a third mounting cavity is provided at the middle portion of the outer side surface of the base; the upper roller is rotatably mounted in the first mounting cavity; the lower roller is rotatably mounted in the second mounting cavity; the magnet is mounted in the third mounting cavity; characterized in that, A spring installation groove is provided on the right side or the left side of the base, a first rope threading hole is provided on the top wall of the spring installation groove, and a second rope threading hole is provided on the bottom wall of the spring installation groove; The first elastic component, the second elastic component, the first connecting rope and the second connecting rope are installed in the spring installation groove; the first elastic component is connected to the first end of the first connecting rope, and the second end of the first connecting rope is suitable for passing through the first rope threading hole to be connected to the first end of the belt; the second elastic component is connected to the second end of the second connecting rope, and the second end of the second connecting rope is suitable for passing through the second rope threading hole to be connected to the second end of the belt.

2. The follower structure of the blind according to claim 1, characterized in that: The first elastic component includes a first spring and a first connecting plug, the first connecting plug includes a first abutment portion and a first plug-in portion axially extending along one side of the first abutment portion, the radius of the first abutment portion is greater than the outer diameter of the first spring, and the radius of the first plug-in portion is smaller than the inner diameter of the first spring; the first end of the first spring is connected to the top wall of the spring mounting groove, and the second end thereof is sleeved on the outside of the first plug-in portion and abuts against the first abutment portion; the first end of the first connecting rope is connected to the first abutment portion, and the second end thereof passes through the first spring and the first rope threading hole in sequence and is connected to the first end of the belt.

3. The follower structure of the blind according to claim 2, characterized in that: A first receiving groove is provided on the first abutting portion, and the first plug-in portion has a first through hole. The first end of the first connecting rope is knotted and arranged in the first receiving groove, and the second end thereof passes through the first through hole, the first spring and the first rope threading hole in sequence and is connected to the first end of the belt.

4. The follower structure of the blind according to claim 3, characterized in that: A first guide seat is provided at the upper end of the base in the height direction, and a first guide hole is provided on the first guide seat, and the first guide hole is located in the middle position of the width direction of the base; the first end of the first connecting rope is knotted and arranged in the first accommodating groove, and the second end thereof passes through the first through hole, the first spring, the first rope threading hole and the first guide hole in sequence and is connected to the first end of the belt.

5. The follower structure of the blind according to claim 1, characterized in that: The second elastic component includes a second spring and a second connecting plug, the second connecting plug includes a second abutment portion and a second plug-in portion axially extending along one side of the second abutment portion, the radius of the second abutment portion is greater than the outer diameter of the second spring, and the radius of the second plug-in portion is smaller than the inner diameter of the second spring; the first end of the second spring is connected to the top wall of the spring mounting groove, and the second end thereof is sleeved on the outside of the second plug-in portion and abuts against the second abutment portion; the first end of the second connecting rope is connected to the second abutment portion, and the second end thereof passes through the second spring and the second rope threading hole in sequence and is connected to the second end of the belt.

6. The follower structure of the blind according to claim 5, characterized in that: A second accommodating groove is arranged on the second abutting portion, and the second plug-in portion has a second through hole. The first end of the second connecting rope is knotted and arranged in the second accommodating groove, and the second end thereof passes through the second through hole, the second spring and the second rope threading hole in sequence and is connected to the second end of the belt.

7. The follower structure of the blind according to claim 6, characterized in that: A second guide seat is provided at the upper end of the base in the height direction, and a second guide hole is provided on the second guide seat, and the second guide hole is located in the middle position of the base in the width direction; the first end of the second connecting rope is knotted and set in the second accommodating groove, and its second end passes through the second through hole, the second spring, the second rope threading hole and the second guide hole in sequence to be connected with the second end of the belt.

8. The follower structure of the blind according to claim 1, characterized in that: At least one partition plate is also arranged in the third installation cavity, and the partition plate divides the third installation cavity into more than two magnet installation areas; and the magnet is embedded in each of the magnet installation areas.

9. The follower structure of the blind according to claim 1, characterized in that: The upper roller is hinged in the first installation cavity through an upper rotating shaft, and a portion of the upper roller protrudes outward from the first installation cavity.

10. The follower structure of the blind according to claim 1, characterized in that: The lower roller is hinged in the second installation cavity through a lower rotating shaft, and a portion of the lower roller protrudes outward from the second installation cavity.

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