Track assembly and windproof roller shutter applying same

Abstract

The rail assembly comprises an outer rail and an inner rail, the inner rail is arranged in the outer rail, the outer rail is integrated, and a notch for containing the inner rail is formed in the outer rail; an elastic component acting on the middle part of the inner rail is arranged; and the elastic assembly limits the inner rail to be separated from the notch. On the premise that complete installation is guaranteed, the outer rail is designed to be integrated, the elastic piece is designed to act on the middle position of the inner rail, through the design, space waste caused by splicing is avoided, when the whole rail assembly is packaged, it can be guaranteed that the inner rail is installed in the outer rail, the installation steps of a user are saved, and the installation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of roller blinds, and more particularly to a track assembly and a windproof roller blind using the track assembly. Background Technology

[0002] Windproof roller blinds are usually auxiliary products attached to other main products. They are used to block the wind on the side by pulling out the curtain.

[0003] The roller blind track assembly needs to be installed on both sides of the inner frame of the main product. The installation steps are to first install the roller blind body on the top of the inner frame, and then insert the track assemblies on both sides into the roller blind body by diagonal installation. The fastening screws need to penetrate the track assembly and be nailed to the main product.

[0004] As shown in publication number CN117948032A, in order to ensure that the fastening screws will not be interfered with by the inner rail when fixing the outer rail to the main product, the outer rail first needs to be set as a splicing structure. The first part of the outer rail is first screwed into the main product through the fastening screws. Then the inner rail is installed in the outer rail. Then the second part of the outer rail is fastened to the first part. The inner rail is confined in the outer rail. The middle part of the inner rail is aligned with the slot. Therefore, the elastic element can only be installed on both sides.

[0005] The common problem with this type of product is that the modular outer track not only requires two sets of molds, resulting in high production costs, but also makes the installation of this modular outer track more complicated and involves more steps. In addition, due to the limitations of assembly and two elastic components, the overall shape of the track assembly is relatively large, resulting in a lot of wasted space. Summary of the Invention

[0006] Based on this, this application provides a track assembly and a windproof roller shutter using the track assembly to solve the above-mentioned technical problems.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a track assembly, including an outer track and an inner track, wherein the inner track is disposed within the outer track, the outer track is integral and has a slot for accommodating the inner track; an elastic component acting on the middle of the inner track is provided; the elastic component restricts the inner track from disengaging from the slot.

[0008] In the above technical solution, further, an elastic cavity for accommodating the elastic component is provided inside the outer track and located behind the slot; the elastic cavity and the slot share a first common edge.

[0009] In the above technical solution, the elastic component further includes an elastic element and a connecting rod; the connecting rod is composed of a rod head and a rod body, and the elastic element is disposed at the rod body.

[0010] In the above technical solution, further, the outer track is provided with a plurality of central through holes in the length direction that penetrate the elastic cavity and connect to the slot; the central through holes include a first central through hole located at the bottom edge of the outer track and a second central through hole located on the first common edge; the first central through hole and the second central through hole are respectively used for the rod body and the rod head to pass through, and the first central through hole restricts the rod head to pass through; the two ends of the elastic element are always in contact with the first common edge and the rod head.

[0011] In the above technical solution, the inner track is closer to the first common side and has several sets of evenly arranged threaded holes in the length direction of the inner track; the end of the rod body away from the rod head is provided with threads, the rest of the rod body is provided as an optical axis, and the end of the rod body is placed in the threaded hole.

[0012] In the above technical solution, the inner track is closer to the first common side and a T-shaped groove is provided in the length direction of the inner track; the end of the rod body away from the rod head is provided with a T-shaped head, the rod body is set as an optical axis, and the T-shaped head is placed in the T-shaped groove.

[0013] In the above technical solution, the rod head and the rod body of the connecting support rod are threaded together, the end of the rod body near the rod head is provided with an internal threaded hole, and the rod head is provided with an external threaded post.

[0014] In the above technical solution, a first cavity and a second cavity are further provided on the outer track and on both sides of the slot; a second common edge is provided between the first cavity and the second cavity; a fastener is provided that passes through the first cavity, the second cavity, and the elastic cavity.

[0015] In the above technical solution, the outer track is further provided with edge through holes for the fastener to pass through, and located on both sides of the central through hole; the edge through holes include a first edge through hole located on the elastic cavity and the second cavity and a second edge through hole located on the first cavity.

[0016] In the above technical solution, the fastener further includes a fastening head and a fastening rod; the first edge through hole and the second edge through hole are respectively used for the fastening rod and the fastening head to pass through, and the first edge through hole restricts the fastening head from passing through.

[0017] In the above technical solution, the fasteners are further distributed in a staggered manner along the length of the outer track.

[0018] In the above technical solution, a clearance groove is further provided on the side of the outer track away from the slot, and the rod head of the connecting support rod is placed in the clearance groove.

[0019] In the above technical solution, the inner track is further provided with a strip groove extending through the inner track in the direction of extension; the threaded hole is connected to the strip groove.

[0020] In the above technical solution, the inner track is convex and includes a first part and a second part, with a first step between them; the slot is a convex inner cavity, with two opposing walls forming a first gap and a second gap, and forming a second step; the width of the first part is greater than the second gap, the first part moves within the range of the first gap, and the first step can fit against the second step.

[0021] In the above technical solution, a protrusion is further provided on one side of the slot opening on the outer track, and at the edge of the slot.

[0022] A windproof roller shutter includes the track assembly described above, and further includes a main body; connecting plates disposed on the inner walls of both sides of the main body; the connecting plates are embedded in the track assembly, and two sets of oppositely disposed track assemblies abut against the bottom of the main body; and a curtain fabric is provided that is pulled out from the main body and the two ends of the curtain fabric are respectively embedded in the two track assemblies.

[0023] The beneficial effects of this invention are: under the premise of ensuring complete installation, the outer track is designed as an integral piece, and the elastic element is designed to act on the middle position of the inner track. This design avoids the waste of space caused by assembly. When the overall track assembly is packaged, it can be ensured that the inner track has been installed inside the outer track, saving users installation steps and improving installation efficiency. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a three-dimensional view of the windproof roller shutter of the present invention.

[0026] Figure 2 This is a perspective view of the track assembly of the present invention.

[0027] Figure 3 This is a top view of the initial state of the track assembly according to the first embodiment of the present invention.

[0028] Figure 4 This is a top view of the track assembly in its active state according to the first embodiment of the present invention.

[0029] Figure 5 This is an exploded view of the track assembly according to the first embodiment of the present invention.

[0030] Figure 6 This is a diagram showing the first installation steps of the track assembly according to the first embodiment of the present invention.

[0031] Figure 7 This is a diagram showing the second installation step of the track assembly according to the first embodiment of the present invention.

[0032] Figure 8 This is a diagram showing the third installation step of the track assembly according to the first embodiment of the present invention.

[0033] Figure 9 This is a top view of the initial state of the track assembly according to the second embodiment of the present invention.

[0034] Figure 10 This is a top view of the track assembly in its active state according to the second embodiment of the present invention.

[0035] Figure 11 This is an exploded view of the track assembly according to the second embodiment of the present invention.

[0036] Figure 12 This is a diagram showing the first installation step of the track assembly according to the second embodiment of the present invention.

[0037] Figure 13 This is a diagram showing the second installation steps of the track assembly according to the second embodiment of the present invention.

[0038] Figure 14 This is a diagram showing the third installation step of the track assembly according to the second embodiment of the present invention.

[0039] Figure 15 This is a diagram of the fourth installation step of the track assembly according to the second embodiment of the present invention.

[0040] In the figure, 1. Track assembly, 101. Outer track, 1011. Groove, 1012. Elastic cavity, 1013. Central through hole, 10131. First central through hole, 10132. Second central through hole, 1014. Threaded hole, 1015. First cavity, 1016. Second cavity, 1017. Edge through hole, 10171. First edge through hole, 10172. Second edge through hole, 1018. Clearance groove, 1019. Protrusion, 102. Inner track, 1021. Strip groove, 1022. 1. T-slot; 2. Elastic component; 201. Elastic element; 202. Connecting rod; 2021. Rod head; 2022. Rod body; 2023. T-head; 2024. Internal threaded hole; 2025. External threaded post; 3. Fastener; 301. Fastening head; 302. Fastening rod; 102-1. First part; 102-2. Second part; 102-3. First step; 4. Main body; 41. Connecting plate; 42. Curtain; a. First common edge; b. Second common edge; c. First spacing; d. Second spacing; e. Second step. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection of this application.

[0042] Reference Figure 3-5 As shown in (9-11), a track assembly 1 includes an outer track 101 and an inner track 102. The inner track 102 is disposed inside the outer track 101. The outer track 101 is integral and has a slot 1011 for accommodating the inner track 102. An elastic component 2 is provided that acts on the middle of the inner track 102. The elastic component 2 restricts the inner track 102 from disengaging from the slot 1011.

[0043] The inner track 102 has a groove on its front side. To ensure that the elastic component 2 does not interfere with the groove when it acts on the middle of the inner track 102, the elastic component 2 is located behind the inner track 102. An elastic cavity 1012 is provided on the outer track 101, located behind the slot 1011. The elastic component 2 is located in the elastic cavity 1012. A first common side a is provided between the elastic cavity 1012 and the slot 1011. The rear side of the inner track 102 is abutted against the first common side a. The elastic component 2 passes through the first common side a and is connected to the inner track 102.

[0044] Specifically, the elastic component 2 includes an elastic element 201 and a connecting rod 202. The connecting rod 202 includes a rod head 2021 and a rod body 2022. The elastic element 201 is a spring. The inner diameter of the elastic element 201 is larger than the diameter of the rod body 2022 and smaller than the diameter of the rod head 2021. The elastic element 201 is inserted into the rod body 2022 of the connecting rod 202, and one end of the elastic element 201 abuts against the inner side of the rod head 2021.

[0045] Specifically, the head end of the rod body 2022 of the connecting support rod 202 passes through the elastic cavity 1012 and connects to the inner track 102. Therefore, it should be noted that a through hole for the connecting support rod 202 to pass through needs to be provided on the elastic cavity 1012. Since it is located at the center of the outer track 101, it is called a center through hole. The center through hole 1013 also needs to prevent the connecting support rod 202 from being completely through. Furthermore, there are several center through holes 1013 located along the length of the outer track 101. Specifically, there are five center through holes 1013, and each center through hole 1013 is evenly arranged.

[0046] The central through hole 1013 includes a first central through hole 10131 located on the bottom edge (rear side) of the outer track 101 and a second central through hole 10132 located on the first common edge a. The first central through hole 10131 and the second central through hole 10132 are respectively used for the rod body 2022 and the rod head 2021 to pass through. The diameter of the first central through hole 10131 needs to be larger than the diameter of the second central through hole 10132. The elastic member 201 cannot pass through the first central through hole 10131, which can restrict the passage of the elastic member 201 and the rod head 2021. This makes the other end of the elastic member 201 fit against the first common edge a. When the end of the rod body 2022 is connected to the inner track 102, when the inner track 102 moves in the slot 1011, it can drive the connecting support rod 202 to move, thereby compressing the elastic member 201.

[0047] First embodiment: Therefore, it should be noted that, in order to ensure the connection between the connecting rod 202 and the inner rail 102, the specific structure is as follows: On the side of the inner rail 102 near the first common side a, and along the length of the inner rail 102, several sets of evenly arranged threaded holes 1014 are provided. When the inner rail 102 is inserted into the slot 1011, the threaded holes 1014 need to correspond to the first central through hole 10131 and the second central through hole 10132. Simultaneously, a thread with a length not shorter than the depth of the threaded holes 1014 is provided at the end of the rod body 2022 of the connecting rod 202, ensuring that the remaining part of the rod body 2022 is a smooth axis. When the inner rail 102 pulls the connecting rod 202 to move, the connecting rod... The rod 202 will not interfere with the outer track 101. It is important to note that the inner walls of the first central through hole 10131 and the second central through hole 10132 are smooth holes. Furthermore, to prevent inaccurate control of the depth to which the connecting rod 202 is screwed into the inner track 102, the end of the rod body 2022 of the connecting rod 202 is flat. At the same time, a strip groove 1021 extending through the inner track 102 is provided on the inner track 102. The strip groove 1021 is connected to the threaded hole 1014 and does not affect the function of the inner track 102. When the head end of the rod body 2022 of the connecting rod 202 is screwed into the threaded hole 1014, it will at most press against the bottom wall of the strip groove 1021 and be resisted, so that the user can get feedback.

[0048] Second embodiment: Therefore, it should be noted that, in order to ensure the connection between the connecting rod 202 and the inner track 102, the specific structure is as follows: the inner track 102 is provided with a T-shaped groove 1022 on the side close to the first common side a, and the end of the rod body 2022 of the connecting rod 202 away from the rod head 2021 is provided with a T-shaped head 2023 that can match the T-shaped groove 1022. This is to ensure that the rod body 2022 will not intersect with the first central through hole 10131 and the second central through hole. The perforation 10132 interferes with the rod body 2022, which is an optical axis. The inner walls of the first central through hole 10131 and the second central through hole 10132 are optical holes. Since the connecting rod 202 is configured with two ends, one end needs to be detachable so that the connecting rod 202 can be installed on the outer track 101. Specifically, the rod head 2021 and the rod body 2022 of the connecting rod 202 are threaded together. An inner hole is provided at the end of the rod body 2022 near the rod head 2021. A threaded hole 2024 is provided, and an external threaded post 2025 is provided on the rod head 2021. The external threaded post 2025 of the rod head 2021 is screwed into the internal threaded hole 2024 on the rod body 2022. During installation, the rod body 2022 and the rod head 2021 are initially detached. One end of the T-shaped head 2023 with the rod body 2022 is first passed through the second central through hole 10132 from one side of the slot 1011, and then through the first central through hole 10131. The spring... The member 201 is inserted into the rod body 2022 from one side of the first central through hole 10131, and abuts against the first common edge a. Then, the external threaded post 2025 of the rod head 2021 is screwed into the internal threaded hole 2024 of the rod body 2022. When the T-slot 1022 and the T-head 2023 are engaged, it is necessary to ensure that a gap is formed between the T-head 2023 and the first common edge a. Therefore, a force can be applied to one side of the rod head 2021 to ensure that a gap is formed between the T-head 2023 and the first common edge a.

[0049] The elastic cavity 1012 is convex in shape. The slot 1011 is located in the middle of the protrusion 1019 of the elastic cavity 1012. A first cavity 1015 and a second cavity 1016 are provided on both sides of the slot 1011 and the protrusion 1019 of the elastic cavity 1012. The first cavity 1015 is horizontally relative to the opening of the slot 1011, and the second cavity 1016 is horizontally relative to the waist of the slot 1011. The first cavity 1015 and the second cavity 1016 are connected and a second common edge b is provided between them. A fastener 3 is provided to pass through the first cavity 1015 and enter the second cavity 1016, then pass through the second cavity 1016 and enter the elastic cavity 1012, and finally exit through the elastic cavity 1012.

[0050] Specifically, edge through holes 1017 are provided at the first cavity 1015, the second cavity 1016, and the elastic cavity 1012 on both sides of the outer track 101 for the fastener 3 to pass through. The edge through holes 1017 include a first edge through hole 10171 provided on the elastic cavity 1012 and the second cavity 1016, and a second through hole provided on the first cavity 1015. The first edge through hole 10171 and the second edge through hole 10172 are respectively used for the fastening rod 302 and the fastening head 301 to pass through. The fastener 3 includes a fastening head 301 and a fastening rod 302. The fastener 3 first passes through the second edge through hole 10172, and then passes through the first edge through hole 10171. In order to restrict the fastening head 301... The fastening rod 302 completely penetrates the outer track 101. The diameter of the second edge through hole 10172 is larger than that of the first edge through hole 10171. The diameter of the first edge through hole 10171 is slightly larger than that of the outer diameter of the fastening rod 302. The diameter of the second edge through hole 10172 is slightly larger than that of the fastening head 301. When the fastening rod 302 is screwed into the outer track 101, the fastening head 301 is restricted by the first edge through hole 10171 and is confined within the first cavity 1015, abutting against the second common edge b. More preferably, the diameter of the hole on the second common edge b can be set as the second edge through hole 10172. The fastening head 301 is confined within the second cavity 1016 and abuts against the common edge between the second cavity 1016 and the elastic cavity 1012.

[0051] like Figure 2 As shown in the diagram, in order to minimize costs while ensuring connection strength, the fasteners 3 are arranged in a staggered distribution along the length of the outer track 101.

[0052] Since the rod head 2021 needs to pass through the rear side of the outer rail 101, when the elastic element 201 is tightened and released, the rod head 2021 may protrude slightly from the rear side of the outer rail 101. A clearance groove 1018 is provided on the side of the outer rail 101 away from the slot 1011, and the rod head 2021 of the connecting support rod 202 is placed in the clearance groove 1018.

[0053] The inner track 102 needs to be confined within the slot 1011. During installation, the inner track 102 is directly inserted from the outer track 101 along its length. Specifically, the inner track 102 is convex in shape, and its shape is shorter on both sides compared to the conventional inner track 102 disclosed. It includes a base and a sliding groove on the base, and can be divided into a second part 102-2 and a first part 102-1. The width of the first part 102-1 is greater than that of the second part 102-2, and a first step 102-3 is formed by the first part 102-1 and the second part 102-2. Similarly, the... The slot 1011 is also convex. A first gap c and a second gap d are formed on the two opposite sides of the slot 1011. A second step e is formed between the first gap c and the second gap d. The width of the first part 102-1 is greater than the second gap d and less than the first gap c. The width of the second part 102-2 is less than the second gap d. When the inner track 102 moves toward the opening of the slot 1011, it is restricted by the contact of the first step 102-3 and the second step e. The first part 102-1 can only move within the range of the first gap c in the horizontal direction.

[0054] In order to optimize the design, since the edge of the slot 1011 may come into contact with other accessories, a protrusion 1019 is provided on the opening side of the slot 1011 on the outer track 101, and at the edge of the slot 1011, in order to avoid excessive friction on the opening side of the slot 1011 on the outer track 101, which greatly reduces the contact area.

[0055] like Figure 1 The image shows a windproof roller shutter using the track assembly 1. The windproof roller shutter includes a main body 4, within which are rotatable rollers supporting the inner walls on both sides of the main body 4. A curtain 42 is mounted on the rollers. Connecting plates 41 are located on the inner walls on both sides of the main body 4. The lower end of the connecting plates 41 protrudes from the main body 4. The convex base portion of the elastic cavity 1012 is inserted from bottom to top into the lower end of the connecting plates 41, pulling the curtain 42 out from the rollers and embedding both ends of the curtain 42 into the grooves of the inner track 102.

[0056] The working process of this invention: as follows Figure 6-8 As shown, firstly, the elastic element 201 is inserted into the rod body 2022 of the connecting support rod 202. The inner rail 102 is then vertically inserted into the slot 1011 of the outer rail 101. Next, the outer rail 101 is placed sideways, and the inner rail 102 is pressed down from one side of the slot 1011 with a finger, ensuring that the rear side of the inner rail 102 is tightly pressed against the first common side a. Finally, the end of the connecting support rod 202 with the elastic element 201 is passed through. The first central through hole 10131 is then made so that the thread at the end of the rod 2022 is screwed into the threaded hole 1014 of the inner rail 102, and the end of the rod 2022 is pressed against the bottom wall of the strip groove 1021. In the initial state, the elastic member 201 is in a slightly compressed state. Finally, the outer rail 101 is inserted into the main body 4 in an oblique manner, and the outer rail 101 is fixed to the outer frame by the fastener 3.

[0057] like Figure 12-15 As shown, firstly, the end of the rod body 2022 furthest from the T-shaped head 2023 is inserted from one side of the slot 1011 into the second central through hole 10132. The rod body 2022 is limited by the T-shaped head 2023 and cannot completely penetrate the first common side a. Then, the elastic member 201 is inserted from one side of the first central through hole 10131 into the rod body 2022, so that one end of the elastic member 201 rests against the first common side a. Finally, the rod head 2021 is screwed in... On the rod body 2022, then maintaining a gap between the T-shaped head 2023 and the first common side a, the inner rail 102 is inserted into the slot 1011 from top to bottom, ensuring that the T-shaped head 2023 is embedded in the T-shaped slot 1022. At this time, the elastic member 201 is in a slightly compressed state. The outer rail 101 is inserted into the main body 4 at an angle, and the outer rail 101 is fixed to the outer frame by the fastener 3.

[0058] Various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0059] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A track assembly, comprising an outer track (101) and an inner track (102), wherein the inner track (102) is disposed within the outer track (101), characterized in that, The outer track (101) is provided with a slot (1011) to accommodate the inner track (102); An elastic component (2) is provided that acts on the middle of the inner track (102); The elastic component (2) restricts the inner track (102) from disengaging from the slot (1011).

2. The track assembly according to claim 1, characterized in that, An elastic cavity (1012) for accommodating the elastic component (2) is provided inside the outer track (101) and located behind the slot (1011); The elastic cavity (1012) and the slot (1011) are provided with a first common edge (a).

3. A track assembly according to claim 2, characterized in that, The elastic component (2) includes an elastic element (201) and a connecting rod (202); The connecting support rod (202) is composed of a rod head (2021) and a rod body (2022), and the elastic element (201) is provided at the rod body (2022).

4. A track assembly according to claim 3, characterized in that, The outer track (101) has a plurality of central through holes (1013) that penetrate the elastic cavity (1012) and connect to the slot (1011) along its length. The central through hole (1013) includes a first central through hole (10131) located on the bottom edge of the outer track (101) and a second central through hole (10132) located on the first common edge (a); The first central through hole (10131) and the second central through hole (10132) are respectively used for the rod body (2022) and the rod head (2021) to pass through, and the first central through hole (10131) restricts the rod head (2021) from passing through; The elastic element (201) is always in contact with the first common side (a) and the rod head (2021) at both ends.

5. A track assembly according to claim 4, characterized in that, The inner track (102) is close to the side of the first common side (a), and a plurality of uniformly arranged threaded holes (1014) are provided in the length direction of the inner track (102); The end of the rod body (2022) away from the rod head (2021) is threaded, the rest of the rod body (2022) is set as an optical axis, and the end of the rod body (2022) is placed in the threaded hole (1014).

6. A track assembly according to claim 5, characterized in that, The inner track (102) is provided with a strip groove (1021) that extends through the inner track (102) in the direction of extension; The threaded hole (1014) is connected to the strip groove (1021).

7. A track assembly according to claim 4, characterized in that, The inner track (102) is close to the side of the first common side (a), and a T-shaped groove (1022) is provided in the length direction of the inner track (102); The end of the rod body (2022) away from the rod head (2021) is provided with a T-shaped head (2023), the rod body (2022) is set as an optical axis, and the T-shaped head (2023) is placed in the T-shaped groove (1022).

8. A track assembly according to claim 7, characterized in that, The rod head (2021) and the rod body (2022) of the connecting support rod (202) are threadedly connected. The end of the rod body (2022) near the rod head (2021) is provided with an internal threaded hole (2024), and the rod head (2021) is provided with an external threaded post (2025).

9. A track assembly according to claim 4, characterized in that, The outer track (101) is an integral piece, and a first cavity (1015) and a second cavity (1016) are provided on the outer track (101) and on both sides of the slot (1011); A second common edge (b) is provided between the first cavity (1015) and the second cavity (1016); A fastener (3) is provided that penetrates the first cavity (1015), the second cavity (1016), and the elastic cavity (1012).

10. A track assembly according to claim 9, characterized in that, The outer track (101) is provided with edge through holes (1017) for the fastener (3) to pass through, and located on both sides of the central through hole (1013). The edge through hole (1017) includes a first edge through hole (10171) located on the elastic cavity (1012) and the second cavity (1016) and a second edge through hole (10172) located on the first cavity (1015).

11. A track assembly according to claim 9, characterized in that, The fasteners (3) are staggered along the length of the outer track (101).

12. A track assembly according to claim 10, characterized in that, The fastener (3) includes a fastening head (301) and a fastening rod (302); The first edge through hole (10171) and the second edge through hole (10172) are respectively used for the fastening rod (302) and the fastening head (301) to pass through, and the first edge through hole (10171) restricts the fastening head (301) from passing through.

13. A track assembly (1) according to claim 3, characterized in that, An avoidance groove (1018) is provided on the side of the outer track (101) away from the slot (1011), and the rod head (2021) of the connecting support rod (202) is placed in the avoidance groove (1018).

14. A track assembly according to claim 1, characterized in that, The inner track (102) is convex and includes a first part (102-1) and a second part (102-2). The width of the first part (102-1) is greater than that of the second part (102-2), and a first step (102-3) is formed between the two. The slot (1011) has a convex inner cavity, with two opposing walls forming a first spacing (c) and a second spacing (d), and forming a second step (e); The width of the first part (102-1) is greater than the width of the second spacing (d), the width of the second part (102-2) is less than the width of the second spacing (d), the first part (102-1) moves within the range of the first spacing (c), and the first step (102-3) can be attached to the second step (e).

15. A track assembly according to claim 1, characterized in that, A protrusion (1019) is provided on one side of the opening of the slot (1011) on the outer track (101) and at the edge of the slot (1011).

16. A windproof roller shutter, comprising the track assembly as described in any one of claims 1-15, characterized in that, It also includes, Main body (4); Connecting plates (41) are provided on the inner walls of both sides of the main body (4); The connecting plate (41) is embedded in the track assembly (1), and the two sets of track assemblies (1) arranged opposite to each other abut against the bottom of the main body (4); A curtain (42) is provided that is pulled out from the main body (4) and the two ends of the curtain (42) are respectively embedded in the two track assemblies (1).

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