Double-sided slider and slide fastener

Abstract

The utility model discloses a double-sided puller and a zipper, and relates to the field of zippers. A double-sided pull head comprises a pull head body and a rope used for pulling the pull head body to slide. The puller body comprises an upper wing plate, a lower wing plate and a connecting column, wherein the upper wing plate and the lower wing plate are vertically arranged, and the connecting column is fixed between the upper wing plate and the lower wing plate and located at the front end of the puller body. The upper wing plate is provided with an upper side tunnel which is through in the front-back direction, the lower wing plate is provided with a lower side tunnel which is through in the front-back direction, the front end opening of the upper side tunnel and the front end opening of the lower side tunnel both extend to the front side space of the connecting column, and the upper side tunnel, the lower side tunnel and the front side space of the connecting column form a rope channel; the rope movably penetrates through the rope channel, the head end of the rope can penetrate through the rear port of the upper side tunnel to be exposed, the head end of the rope is provided with an upper blocking part, the tail end of the rope can penetrate through the rear port of the lower side tunnel to be exposed, and the tail end of the rope is provided with a lower blocking part. The problem that the rope is broken due to scraping at least can be solved.

Description

Technical Field

[0001] This application belongs to the technical field of zippers, specifically relating to a double-sided zipper pull and zipper. Background Technology

[0002] Traditional zipper pulls are generally limited to a single-sided operation mode, meaning users can only pull the pull from either the outside or the inside of the zipper to open or close it, which to some extent restricts the flexibility and convenience of zipper use. However, the advent of reversible zipper pulls has completely broken the limitations of single-sided operation. Reversible zipper pulls typically consist of a main body and two tabs located on the outside and inside of the main body. This innovative structure allows users to freely choose to pull the pull from either the outside or the inside of the zipper according to their needs or personal preference, thus greatly improving the flexibility and convenience of zipper use.

[0003] Existing patent 202223134350.6 discloses a double-sided zipper pull, including a zipper pull body, a first outer part, a second outer part, and a rope. The first outer part is located at the rear end of the top surface of the zipper pull body, and the second outer part is located at the rear end of the bottom surface of the zipper pull body. Both the first and second outer parts have rope holes, and the end of the zipper pull body is provided with a rope limiting part. The rope is movably limited within the rope limiting part, and both ends of the rope pass through the two rope holes respectively. After passing through the rope holes, the two ends of the rope are knotted and fixed, thus installing the rope on the zipper pull body. The outer parts can be directly connected to the rope, and the rope can be moved on the top of the zipper pull body by pulling the outer parts. Its movement principle is the same as that of the pull tab structure.

[0004] After in-depth analysis and research of the existing patent technology with patent number 202223134350.6, we found the following technical defects: First, no matter how the user operates the rope, the rope segments on the upper and lower sides of the zipper head will be exposed in large areas. It is particularly noteworthy that when the zipper head is used in scenarios such as storage bags or backpacks, the rope segments on the inside are directly facing the items inside the bag and are easily scratched and broken by sharp or hard objects inside the bag, which seriously affects the use of the zipper head.

[0005] Given the aforementioned shortcomings, further optimization of the double-sided zipper pull structure is particularly urgent. Utility Model Content

[0006] The purpose of this application is to provide a double-sided zipper pull and zipper that can at least solve the problem of the rope breaking due to scratches.

[0007] To solve the above-mentioned technical problems, this application is implemented as follows:

[0008] This application provides a double-sided zipper pull, including: a zipper pull body and a rope for pulling the zipper pull body to slide back and forth on the zipper belt;

[0009] The zipper head body includes a pair of upper and lower wing plates and a connecting post, the connecting post being fixed between the upper and lower wing plates and located at the front end of the zipper head body;

[0010] The upper wing plate has an upper tunnel that runs through the front and rear, and the lower wing plate has a lower tunnel that runs through the front and rear. The front ends of the upper tunnel and the lower tunnel both extend to the front space of the connecting column. The upper tunnel, the lower tunnel, and the front space of the connecting column constitute a rope channel.

[0011] The rope is movably threaded through the rope channel, and the first end of the rope can pass through the rear port of the upper tunnel and be exposed. The first end of the rope is provided with an upper blocking part, and the tail end of the rope can pass through the rear port of the lower tunnel and be exposed. The tail end of the rope is provided with a lower blocking part.

[0012] This application embodiment also provides a zipper, including a pair of zipper straps and the aforementioned double-sided zipper pull, wherein the double-sided zipper pull is capable of sliding back and forth on the pair of zippers.

[0013] In this embodiment, by providing an upper tunnel, the upper rope segment can be guided. When the lower rope segment is pulled backward, the upper blocking part at the beginning of the rope is pulled forward and blocked by the rear end of the upper tunnel, preventing the beginning of the rope from detaching from the upper tunnel. At the same time, the upper rope segment is stored inside the upper tunnel, thereby reducing the risk of breakage due to scratches from sharp or hard objects and improving the service life of the upper rope segment. Similarly, by providing a lower tunnel, the lower rope segment can be guided. When the upper rope segment is pulled backward, the lower blocking part at the end of the rope is pulled forward and blocked by the rear end of the lower tunnel, preventing the end of the rope from detaching from the lower tunnel. At the same time, the lower rope segment is stored inside the lower tunnel, thereby reducing the risk of breakage due to scratches from sharp or hard objects and improving the service life of the lower rope segment. Attached Figure Description

[0014] Figure 1 This is a first-view view of the zipper pull body disclosed in the embodiments of this application;

[0015] Figure 2 This is a second-view view of the zipper pull body disclosed in the embodiments of this application;

[0016] Figure 3 This is a third-view diagram of the zipper pull body disclosed in the embodiments of this application;

[0017] Figure 4 This is a fourth-view view of the zipper pull body disclosed in the embodiments of this application;

[0018] Figure 5 This is a first-view diagram of the double-sided zipper puller disclosed in the embodiments of this application in its first state;

[0019] Figure 6 This is a second-view diagram of the double-sided zipper puller disclosed in the embodiments of this application in its first state;

[0020] Figure 7 This is a first-view diagram of the double-sided zipper puller in a second state as disclosed in the embodiments of this application;

[0021] Figure 8 This is a second-view diagram of the double-sided zipper head disclosed in the embodiments of this application in the second state.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10 - Pull-out body;

[0024] 11-Upper wing plate; 11a-Upper tunnel; 11b-Upper notch; 11c-Upper arc-shaped edge; 111-Upper bottom plate; 112-Upper cover plate;

[0025] 12-Lower wing plate; 12a-Lower tunnel; 12b-Lower notch; 12c-Lower curved edge; 121-Lower bottom plate; 122-Lower cover plate;

[0026] 13-Connecting post; 131-Groove;

[0027] 20 - Rope;

[0028] 31-Upper blocking part; 32-Lower blocking part. Detailed Implementation

[0029] 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0031] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0032] refer to Figures 1 to 8 This application discloses a double-sided zipper pull, which includes a zipper pull body 10 and a rope 20 for pulling the zipper pull body 10 to slide back and forth on the zipper belt.

[0033] The slider body 10 is the main body or skeleton of the slider. When the slider body 10 slides back and forth on the chain, it can cause the chain teeth of the pair of chain belts it passes through to mesh or separate. The rope 20 is the force-bearing component of the double-sided slider. The user can apply a pulling force to the rope 20 to drive the slider body 10 to slide.

[0034] Among them, such as Figures 1 to 4 As shown, the zipper pull body 10 includes a pair of upper wing plates 11 and lower wing plates 12, which are arranged vertically, and a connecting post 13. The connecting post 13 is fixed between the upper wing plates 11 and lower wing plates 12 and is located at the front end of the zipper pull body 10. Based on this, it can be ensured that the upper wing plates 11 and lower wing plates 12 are arranged relatively spaced apart, and a tooth receiving space is formed between the upper wing plates 11 and lower wing plates 12 so that the zipper teeth can pass through the tooth receiving space.

[0035] like Figure 2 , Figure 3 , Figure 6 and Figure 8 As shown, the upper wing plate 11 may be provided with an upper tunnel 11a that runs through the front and rear, and the lower wing plate 12 may be provided with a lower tunnel 12a that runs through the front and rear. The front ends of the upper tunnel 11a and the lower tunnel 12a both extend to the front space of the connecting column 13, so that the upper tunnel 11a, the lower tunnel 12a and the front space of the connecting column 13 form a rope channel. The rope 20 is movably threaded through the rope channel, and the first end of the rope 20 can pass through the rear end of the upper tunnel 11a and be exposed. The first end of the rope 20 is provided with an upper blocking part 31, and the tail end of the rope 20 can pass through the rear end of the lower tunnel 12a and be exposed. The tail end of the rope 20 is provided with a lower blocking part 32.

[0036] Based on this, the rope 20 can move back and forth under the guidance of the rope channel. Furthermore, a portion of the rope 20 is arranged on the upper side of the tractor body 10; for ease of discussion, this portion will be referred to simply as the upper rope segment. Part of the upper rope segment extends into the upper tunnel 11a, while another portion extends beyond the rear of the upper tunnel 11a, providing a gripping point for pulling the rope 20. The upper tunnel 11a not only accommodates a portion of the upper rope segment but also provides a guide for its movement.

[0037] A portion of the rope 20 is positioned on the underside of the pull head body 10. For ease of discussion, this portion of the rope 20 will be referred to simply as the underside rope segment. Within the underside rope segment, some segments extend into the underside tunnel 12a, while others extend beyond the rear of the underside tunnel 12a, providing a gripping point for pulling the rope 20. The underside tunnel 12a not only accommodates a portion of the underside rope segment but also provides guidance for its movement.

[0038] The middle rope segment, located between the upper and lower rope segments, is positioned in the space in front of the connecting post 13, allowing the rope 20 to extend in a U-shape for easy installation. As the rope 20 moves, the lengths of the upper and lower rope segments change; if one increases, the other decreases accordingly.

[0039] like Figure 7 and Figure 8 As shown, when the lower blocking part 32 is held and the rope 20 is pulled backward, the upper blocking part 31 moves forward to the rear end of the upper tunnel 11a and is blocked, thereby allowing the pull head body 10 to slide backward; when the upper blocking part 31 is held and the rope 20 is pulled backward, the lower blocking part 32 moves forward to the rear end of the lower tunnel 12a and is blocked, thereby allowing the pull head body 10 to slide backward.

[0040] It should be noted that in this embodiment, the end of the slider body 10 containing the corresponding connecting post 13 is defined as the front end, and the opposite end is defined as the rear end. In terms of orientation, the position of the connecting post 13 is defined as the front, and the opposite direction is defined as the rear.

[0041] In this embodiment, the upper tunnel 11a provides a guide for the movement of the upper rope segment of the rope 20. When the lower rope segment of the rope 20 is pulled backward, the ground blocking part 31 at the beginning of the rope 20 is pulled forward by the rope 20 and is blocked by the rear end of the upper tunnel 11a, preventing the beginning of the rope 20 from detaching from the upper tunnel 11a. At the same time, the upper rope segment is stored inside the upper tunnel 11a, thereby reducing the risk of breakage due to scratches from sharp or hard objects and improving the service life of the upper rope segment of the rope 20. Similarly, by setting up the lower tunnel 12a, the lower rope segment of the rope 20 can be guided to move. When the upper rope segment of the rope 20 is pulled backward, the underground blocking part 32 located at the tail end of the rope 20 is pulled forward by the rope 20 and can be blocked by the rear end of the lower tunnel 12a to prevent the tail end of the rope 20 from leaving the lower tunnel 12a. At the same time, the lower rope segment is stored in the lower tunnel 12a, thereby reducing the risk of being scratched and broken by sharp or hard objects and improving the service life of the lower rope segment of the rope 20.

[0042] Continue to refer to Figures 1 to 4 In some embodiments, the top wall of the upper tunnel 11a, which is away from the lower tunnel 12a, may be provided with an upper notch 11b. The upper notch 11b extends backward from the middle position of the slider body 10 in the front-rear direction and penetrates the rear end of the top wall of the upper tunnel 11a. The above defines the position and layout range of the upper notch 11b, which is arranged in the middle and rear region of the slider body 10.

[0043] Based on this, such as Figure 7 and Figure 8 As shown, when the lower blocking part 32 is held and the rope 20 is pulled backward, the upper rope segment moves forward in the upper tunnel 11a. The upper rope segment can pull and drive the upper blocking part 31, which is set at the beginning of the rope 20, to move forward smoothly into the upper notch 11b and press against the upper notch 11b to apply a pushing force to pull the slider body 10 to slide backward. At the same time, the force that causes the slider body 10 to move forward is mainly concentrated at the upper notch 11b, that is, the middle and rear part of the slider body 10, thereby optimizing the stability and smoothness of the slider body 10 sliding.

[0044] Similarly, the lower tunnel 12a may have a lower notch 12b on its top wall opposite to the upper tunnel 11a. The lower notch 12b extends rearward from the middle position of the slider body 10 in the front-rear direction and penetrates the rear end of the top wall of the lower tunnel 12a. The location and layout range of the lower notch 12b have been defined above. The lower notch 12b is arranged in the middle and rear region of the slider body 10.

[0045] Based on this, when the upper blocking part 31 is held and the rope 20 is pulled backward, the lower rope segment moves forward in the lower tunnel 12a. The lower rope segment can pull and drive the lower blocking part 32, which is set at the tail end of the rope 20, to move forward smoothly into the lower notch 12b and press against the lower notch 12b to apply a pushing force to pull the slider body 10 to slide backward. At the same time, the force that pushes the slider body 10 forward will be mainly concentrated at the lower notch 12b, that is, the middle and rear part of the slider body 10, thereby optimizing the stability and smoothness of the slider body 10 sliding.

[0046] refer to Figure 5 and Figure 6 When the rope 20 is held in the area of ​​the front space, the upper rope segment moves forward in the upper tunnel 11a. The upper rope segment can pull and drive the upper blocking part 31 set at the head end of the rope 20 to move forward smoothly into the upper notch 11b, press against the upper notch 11b to apply a pushing force, and the force that causes the pull head body 10 to move forward is mainly concentrated at the upper notch 11b. The lower rope segment moves forward in the lower tunnel 12a. The lower rope segment can pull and drive the lower blocking part 32 set at the tail end of the rope 20 to move forward smoothly into the lower notch 12b, press against the lower notch 12b to apply a pushing force, and the force that causes the pull head body 10 to move forward is mainly concentrated at the lower notch 12b. In this way, a force can be applied to the middle and rear area of ​​the pull head body 10, thereby optimizing the stability and smoothness of the sliding of the pull head body 10.

[0047] refer to Figures 1 to 3 In some embodiments, the upper wing plate 11 may include an upper bottom plate 111 and an upper cover plate 112. An upper tunnel 11a is formed between the upper bottom plate 111 and the upper cover plate 112, and the upper tunnel 11a extends from the front end of the upper bottom plate 111 to the rear end of the upper bottom plate 111.

[0048] Additionally, the lower wing plate 12 may include a lower bottom plate 121 and a lower cover plate 122. A lower tunnel 12a is formed between the lower bottom plate 121 and the lower cover plate 122, and the lower tunnel 12a extends from the front end of the lower bottom plate 121 to the rear end of the lower bottom plate 121.

[0049] In this embodiment, the upper base plate 111 and the lower base plate 121 are spaced apart in the vertical direction. The connecting post 13 is connected between the upper base plate 111 and the lower base plate 121 and is located at the front end of the zipper head body 10. In this way, the stability between the upper base plate 111 and the lower base plate 121 can be guaranteed, and a tooth receiving space can be formed between the upper base plate 111 and the lower base plate 121 for the tooth to pass through.

[0050] Based on the above configuration, since the upper tunnel 11a extends from the front end of the upper base plate 111 to the rear end of the upper base plate 111, and the upper notch 11b is set on the top wall of the upper tunnel 11a, and viewed from above, the upper notch 11b extends backward from the middle position in the front-rear direction of the pull head body 10 and penetrates the rear end of the top wall of the upper tunnel 11a, the upper tunnel 11a provides a moving guide for the upper rope segment. When the lower blocking part 32 set at the tail end of the rope 20 is pulled backward, the ground blocking part 31 at the head end of the rope 20 is pulled forward by the rope 20 and can smoothly enter the upper notch 11b. At this time, the upper rope segment is stored in the upper tunnel 11a, thereby reducing the risk of being broken by being scratched by sharp or hard objects, improving the service life of the upper rope segment, and also reducing the risk of collision with foreign objects and scratching the side wall of the upper blocking part 31 by utilizing the side wall of the upper tunnel 11a configured corresponding to the upper notch 11b.

[0051] Similarly, since the lower tunnel 12a extends from the front end of the lower base plate 121 to the rear end of the lower base plate 121, the lower notch 12b is set on the top wall of the lower tunnel 12a. Looking from the bottom up, the lower notch 12b extends backward from the middle position in the front-rear direction of the pull head body 10 and penetrates the rear end of the top wall of the lower tunnel 12a. In this way, the lower tunnel 12a provides a moving guide for the lower rope segment. When the upper blocking part 31 set at the head end of the rope 20 is pulled backward, the underground blocking part 32 located at the tail end of the rope 20 is pulled forward by the rope 20 and can smoothly enter the lower notch 12b. At this time, the lower rope segment is stored in the lower tunnel 12a, thereby reducing the risk of being broken by being scratched by sharp or hard objects, improving the service life of the lower rope segment, and also reducing the risk of collision with foreign objects and scratching the side wall of the lower blocking part 32 by utilizing the side wall of the lower tunnel 12a configured corresponding to the lower notch 12b.

[0052] refer to Figure 2 , Figure 3 , Figure 6 and Figure 8 In some embodiments, the front sidewall of the connecting column 13 may be provided with a groove 131 extending in the vertical direction. The upper opening of the groove 131 penetrates the upper bottom plate 111 and communicates with the front port of the upper tunnel 11a, and the lower opening of the groove 131 penetrates the lower bottom plate 121 and communicates with the front port of the lower tunnel 12a. The groove 131 forms part of the rope channel. Based on this, the middle rope segment of the rope 20 can be arranged in the groove 131 and move up and down with the guidance of the groove 131.

[0053] In some embodiments, viewed from above, the upper cover plate 112 can extend to the upper side of the groove 131, and the lower cover plate can extend to the lower side of the groove 131. Based on this, the upper cover plate 112 and the lower cover plate 122 can respectively prevent other objects from colliding with or scratching the middle rope segment of the rope 20 located in the groove 131 from the upper and lower directions.

[0054] Optionally, viewed from above, the upper cover plate 112 can cover at least half of the area of ​​the groove 131; the lower cover plate 122 can cover at least half of the area of ​​the groove 131.

[0055] In some embodiments, the left and right sides of the upper cover plate 112 extend obliquely from the middle of the zipper body 10 in the left and right direction to the left and right ends respectively towards the upper bottom plate 111. This can help reduce the overall volume of the zipper body 10 and reduce the space occupied by the double-sided zipper.

[0056] Optionally, the upper sidewall of the upper cover plate 112 can be curved, and its edge can be rounded. This makes the upper side of the zipper head body 10 smoother, so as to prevent the user or the fabric from being scratched by the upper side of the zipper head body 10.

[0057] In some embodiments, the left and right sides of the lower cover plate 122 extend obliquely from the middle of the zipper body 10 in the left and right direction to the left and right ends respectively towards the lower bottom plate 121. This can help reduce the overall volume of the zipper body 10 and reduce the space occupied by the double-sided zipper.

[0058] Optionally, the lower side wall of the lower cover plate 122 can be curved, and its edge can be rounded. This can make the lower side of the zipper head body 10 smoother, so as to prevent the user or the fabric from being scratched by the lower side of the zipper head body 10.

[0059] In some embodiments, the upper blocking part 31 can be a knot formed by tying a knot at the beginning of the rope 20, so that the rope knot cooperates with the upper notch 11b to drive the pull head body 10 to move backward.

[0060] In other embodiments, the upper blocking part 31 may also be an upper stop fixedly installed at the beginning of the rope 20, and the upper stop may be detachably disposed within the upper notch 11b so that the pull head body 10 can be moved backward by the cooperation between the upper stop and the upper notch 11b. In addition, the shape of the upper stop and the upper notch 11b may be adapted to each other so that the upper stop can be engaged and fixed with the upper notch 11b.

[0061] Optionally, the upper sidewall of the upper blocking part 31 may be provided with textured surfaces to increase friction and prevent the upper blocking part 31 from slipping when the user pulls it.

[0062] In addition, the lower blocking part 32 can be a knot formed by tying a knot at the end of the rope 20, so that the pull head body 10 can be moved backward by the knot cooperating with the lower notch 12b.

[0063] In other embodiments, the lower stop 32 may also be a lower stop fixedly installed at the tail end of the rope 20, and the lower stop may be detachably disposed within the lower notch 12b so that the pull head body 10 can be moved backward by the engagement of the lower stop with the lower notch 12b. In addition, the shape of the lower stop and the lower notch 12b may be adapted to each other so that the lower stop can be engaged and fixed with the upper notch 11b.

[0064] Optionally, the lower sidewall of the lower stop portion 32 may be provided with textured surfaces to increase friction and prevent the lower stop portion 32 from slipping when the user pulls it.

[0065] refer to Figure 1 In some embodiments, the upper notch 11b may have an upper arcuate edge 11c to increase the contact area between the upper notch 11b and the upper blocking part 31, so that when a pulling force is applied to the lower blocking part 32, the upper blocking part 31 is not easily cut by the edge of the upper notch 11b.

[0066] Similarly, the lower notch 12b may have a lower arc-shaped edge 12c to increase the contact area between the lower notch 12b and the lower blocking part 32, so that when a pulling force is applied to the upper blocking part 31, the lower blocking part 32 is not easily cut by the edge of the lower notch 12b.

[0067] Based on the above-mentioned double-sided zipper pull, this application embodiment also discloses a zipper, including a pair of chain straps and the above-mentioned double-sided zipper pull, wherein the double-sided zipper pull can slide back and forth on the pair of zippers.

[0068] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A dual-sided slider characterized by, The zipper puller comprises: a puller body (10) and a string (20) for pulling the puller body (10) to slide on the chain of the zipper; the puller body (10) comprises a pair of upper and lower wings (11) and (12) and a connecting column (13), the connecting column (13) is fixed between the upper and lower wings (11) and (12) and located at the front end of the puller body (10); the upper wing (11) is provided with an upper side tunnel (11a) extending through the front and back, the lower wing (12) is provided with a lower side tunnel (12a) extending through the front and back, the front end of the upper side tunnel (11a) and the front end of the lower side tunnel extend to the front side space of the connecting column (13), and the upper side tunnel (11a), the lower side tunnel (12a) and the front side space of the connecting column (13) form a string channel; the string (20) is movably arranged in the string channel, the front end of the string (20) is exposed by passing through the rear end of the upper side tunnel (11a), the front end of the string (20) is provided with an upper blocking part (31), and the tail end of the string (20) is exposed by passing through the rear end of the lower side tunnel (12a), the tail end of the string (20) is provided with a lower blocking part (32).

2. The dual-purpose slider according to claim 1, wherein the top wall of the upper side tunnel (11a) away from the lower side tunnel (12a) is provided with an upper notch part (11b), the upper notch part (11b) extends backward from the middle position of the puller body (10) in the front and back direction and penetrates the rear end of the top wall of the upper side tunnel (11a), and / or the top wall of the lower side tunnel (12a) away from the upper side tunnel (11a) is provided with a lower notch part (12b), the lower notch part (12b) extends backward from the middle position of the puller body (10) in the front and back direction and penetrates the rear end of the top wall of the lower side tunnel (12a).

3. The dual-purpose slider according to claim 2, wherein the upper wing (11) comprises an upper side bottom plate (111) and an upper side cover plate (112), the upper side tunnel (11a) is formed between the upper side bottom plate (111) and the upper side cover plate (112), and the upper side tunnel (11a) extends from the front end of the upper side bottom plate (111) to the rear end of the upper side bottom plate (111); and / or the lower wing (12) comprises a lower side bottom plate (121) and a lower side cover plate (122), the lower side tunnel (12a) is formed between the lower side bottom plate (121) and the lower side cover plate (122), and the lower side tunnel (12a) extends from the front end of the lower side bottom plate (121) to the rear end of the lower side bottom plate (121).

4. The dual-purpose slider according to claim 3, wherein the front side wall of the connecting column (13) is provided with a groove (131) extending in the up and down direction; the upper groove of the groove (131) penetrates the upper side bottom plate (111) and communicates with the front end of the upper side tunnel (11a); the lower groove of the groove (131) penetrates the lower side bottom plate (121) and communicates with the front end of the lower side tunnel (12a); the groove (131) forms part of the string channel.

5. The dual-purpose slider according to claim 4, wherein From top to bottom, the upper side cover plate (112) extends to the upper side of the groove (131), and the lower side cover plate (122) extends to the lower side of the groove (131).

6. The dual-purpose slider according to claim 3, wherein The left and right side regions of the upper side cover plate (112) are respectively inclinedly extended from the middle part of the puller main body (10) in the left and right directions to the directions of the upper side bottom plate (111); And / or, the left and right side regions of the lower side cover plate (122) are respectively inclinedly extended from the middle part of the puller main body (10) in the left and right directions to the directions of the lower side bottom plate (121).

7. The dual-purpose slider according to any one of claims 1 to 6, wherein The upper blocking part (31) is a knot formed at the head end of the rope (20); And / or, the lower blocking part (32) is a knot formed at the tail end of the rope (20).

8. The dual-purpose slider according to any one of claims 2 to 6, wherein The upper blocking part (31) is an upper blocking piece fixedly installed at the head end of the rope (20), and the upper blocking piece is matched with the shape of the upper notch part (11b); And / or, the lower blocking part (32) is a lower blocking piece fixedly installed at the tail end of the rope (20), and the lower blocking piece is matched with the shape of the lower notch part (12b).

9. The dual-purpose slider according to any one of claims 2 to 6, wherein The upper notch part (11b) has an upper arc-shaped edge (11c); The lower notch part (12b) has a lower arc-shaped edge (12c).

10. A zipper characterized by, A pair of chain belts and the double-sided puller according to any one of claims 1 to 9 are included, and the double-sided puller can slide on the pair of the chain belts.

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