Double-sided slider and slide fastener

Abstract

The invention 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, and particularly relates to a double-sided pull head and a zipper. Background Art

[0002] Traditional pull heads are generally limited to a single-sided operation mode, which means that users can only pull the pull head from one side of the outside or inside of the zipper to perform the opening and closing actions of the zipper, restricting the flexibility and convenience of zipper use to a certain extent. However, the emergence of double-sided pull heads has completely broken through the limitations of single-sided operation. A double-sided pull head usually includes a pull head body and two pull tabs respectively disposed on the outside and inside of the pull head body. This innovative structure allows users to freely choose either the outside or the inside of the zipper to pull the pull head according to actual needs or personal preferences, thus greatly enhancing the flexibility and convenience of zipper use.

[0003] The existing patent 202223134350.6 discloses a double-sided pull head, including a pull head body, a first external connection part, a second external connection part, and a rope. The first external connection part is disposed at the rear end of the top surface of the pull head body, and the second external connection part is disposed at the rear end of the bottom surface of the pull head body. Both the first external connection part and the second external connection part are provided with rope holes, and a rope limiting part is provided at the end of the pull head body. The rope is movably limited within the rope limiting part, and the two ends of the rope respectively penetrate through the two rope holes. After passing through the rope holes, the two rope ends are knotted and fixed to install the rope on the pull head body. An external component can be directly connected to the rope, and by pulling the external component, the rope can be moved on the top of the pull head body, and its movement principle is the same as that of the structure of the pull tab.

[0004] After in-depth analysis and research on the existing patented technology with the patent number 202223134350.6, we found the following technical defects: First, no matter how the user operates to pull the rope, the rope segments on the upper and lower sides of the pull head body will be largely exposed. In particular, when the pull head is applied in scenarios such as storage bags or backpacks, the rope segment on the inside is directly facing the items in the bag and is extremely vulnerable to being scratched and broken by sharp or hard items in the bag, seriously affecting the use effect of the pull head.

[0005] In view of the above defects, it is particularly urgent to further optimize the structure of the double-sided pull head. Summary of the Invention

[0006] The purpose of the embodiments of this application is to provide a double-sided pull head and a zipper, which can at least solve the problem of the rope being scratched and broken.

[0007] To solve the above technical problems, this application is implemented as follows: The embodiments of this application provide a double-sided pull head, including: a pull head body and a rope for pulling the pull head body to slide back and forth on the zipper tape; The slider body includes a pair of upper wing plates and lower wing plates disposed up and down, and a connecting column, wherein the connecting column is fixed between the upper wing plates and the lower wing plates and is located at the front end of the slider body; The upper wing plate is provided with an upper tunnel extending frontward and rearward, and the lower wing plate is provided with a lower tunnel extending frontward and rearward, and the front ports of the upper tunnel and the lower tunnel both extend to the front space of the connecting column, and the upper tunnel, the lower tunnel and the front space of the connecting column constitute a rope channel; The rope is movably arranged in the rope channel, and the head end of the rope can pass through the rear port of the upper tunnel and be exposed, the head end of the rope is provided with an upper blocking part, the tail end of the rope can pass through the rear port of the lower tunnel and be exposed, and the tail end of the rope is provided with a lower blocking part.

[0008] The embodiment of the present application also provides a zipper, comprising a pair of chain tapes and the above-mentioned double-sided slider, wherein the double-sided slider can slide back and forth on the pair of zippers.

[0009] In the embodiment of the present application, an upper tunnel is provided to provide a movement guide for the upper rope segment of the rope. When the lower rope segment of the rope is pulled backward, the upper blocking portion located at the head end of the rope is pulled forward by the rope and can be blocked by the rear end of the upper tunnel to prevent the head end of the rope from escaping from the upper tunnel. At the same time, the upper rope segment is stored in the upper tunnel, thereby reducing the risk of being scratched by sharp or hard objects and breaking, thereby increasing the service life of the upper rope segment of the rope; similarly, a lower tunnel is provided to provide a movement guide for the lower rope segment of the rope. When the upper rope segment of the rope is pulled backward, the lower blocking portion located at the tail end of the rope is pulled forward by the rope and can be blocked by the rear end of the lower tunnel to prevent the tail end of the rope from escaping from the lower tunnel. At the same time, the lower rope segment is stored in the lower tunnel, thereby reducing the risk of being scratched by sharp or hard objects and breaking, thereby increasing the service life of the lower rope segment of the rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a first perspective view of the slider body disclosed in the embodiment of the present application; Figure 2 A second viewing angle diagram of the slider body disclosed in the embodiment of the present application; Figure 3 A third perspective view of the slider body disclosed in the embodiment of the present application; Figure 4 This is a fourth viewing angle diagram of the slider body disclosed in the embodiment of the present application; Figure 5 A first viewing angle diagram of the double-sided slider disclosed in the embodiment of the present application in the first state; Figure 6 Second perspective view of the double-sided slider disclosed in the embodiment of the present application in the first state; Figure 7 First perspective view of the double-sided slider disclosed in the embodiment of the present application in the second state; Figure 8 Second perspective view of the double-sided slider disclosed in the embodiment of the present application in the second state.

[0011] Explanation of reference numerals: 10 - slider body; 11 - upper wing plate; 11a - upper side tunnel; 11b - upper notch; 11c - upper arc edge; 111 - upper side bottom plate; 112 - upper side cover plate; 12 - lower wing plate; 12a - lower side tunnel; 12b - lower notch; 12c - lower arc edge; 121 - lower side bottom plate; 122 - lower side cover plate; 13 - connecting post; 131 - groove; 20 - rope; 31 - upper blocking part; 32 - lower blocking part. Detailed implementation manners

[0012] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0013] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects.

[0014] Next, the embodiments of the present application will be described in detail in conjunction with the accompanying drawings through specific embodiments and their application scenarios.

[0015] Referring to Figures 1 to 8 , an embodiment of the present application discloses a double-sided slider. The disclosed double-sided slider includes a slider body 10 and a rope 20 for pulling the slider body 10 to slide back and forth on the chain of the zipper.

[0016] Among them, the slider body 10 is the main part or skeleton part of the slider. When the slider body 10 slides back and forth on the chain belt, it can cause the chain teeth of a pair of chain belts it passes through to engage or separate with each other; the rope 20 is the force-bearing part of the double-sided slider, and the user can apply tension to the rope 20 to drive the slider body 10 to slide.

[0017] Among them, Figures 1 to 4 As shown, the slider body 10 includes a pair of upper wing plates 11 and lower wing plates 12, which are arranged vertically, and a connecting column 13, which is fixed between the upper wing plates 11 and the lower wing plates 12 and is located at the front end of the slider body 10. Based on this, it can be ensured that the upper wing plates 11 and the lower wing plates 12 are arranged relatively spaced apart, and a tooth accommodating space is formed between the upper wing plates 11 and the lower wing plates 12, so that the tooth can pass through the tooth accommodating space.

[0018] like Figure 2 , Figure 3 , Figure 6 and Figure 8 As shown, the upper wing plate 11 can be provided with an upper tunnel 11a which is set to pass through from front to back, and the lower wing plate 12 can be provided with a lower tunnel 12a which is set to pass through from front to back, and the front ports 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 constitute a rope channel; the rope 20 can be movably arranged in the rope channel, and the head end of the rope 20 can pass through the rear port of the upper tunnel 11a and be exposed, and the head end of the rope 20 is provided with an upper blocking portion 31, and the tail end of the rope 20 can pass through the rear port of the lower tunnel 12a and be exposed, and the tail end of the rope 20 is provided with a lower blocking portion 32.

[0019] Based on this, the rope 20 can move back and forth under the guidance of the rope channel. In addition, part of the rope 20 is arranged on the upper side of the slider body 10. For the convenience of discussion, the rope segment arranged on the upper side of the slider body 10 is referred to as the upper rope segment. In the upper rope segment, part of it extends into the upper tunnel 11a, and part of it can extend to the rear of the upper tunnel 11a to provide a gripping point for pulling the rope 20. The upper tunnel 11a can not only store part of the upper rope segment, but also provide a movement guide for the movement of the upper rope segment.

[0020] Part of the rope 20 is arranged at the lower side of the slider body 10. For the sake of convenience, the rope segment arranged at the lower side of the slider body 10 is referred to as the lower rope segment. In the lower rope segment, part of the rope segment extends into the lower tunnel 12a, and part of the rope segment can extend to the rear of the lower tunnel 12a to provide a gripping point for pulling the rope 20. The lower tunnel 12a can not only store part of the lower rope segment, but also provide a movement guide for the movement of the lower rope segment.

[0021] The middle rope segment between the upper rope segment and the lower rope segment is the middle rope segment, which is arranged in the front space of the connecting column 13, so that the rope 20 is arranged in a U-shaped extension, which is very convenient to install. During the movement of the rope 20, the lengths of the upper rope segment and the lower rope segment will change, and when one increases, the other decreases accordingly.

[0022] like Figure 7 and Figure 8 As shown, when the lower blocking portion 32 is held and the rope 20 is pulled backward, the upper blocking portion 31 moves forward to the rear port of the upper tunnel 11a and is blocked, so that the slider body 10 can be pulled to slide backward; when the upper blocking portion 31 is held and the rope 20 is pulled backward, the lower blocking portion 32 moves forward to the rear port of the lower tunnel 12a and is blocked, so that the slider body 10 can be pulled to slide backward.

[0023] It should be noted that in the embodiment of the present application, the end of the slider body 10 corresponding to the connecting column 13 is defined as the front end, and the other end opposite thereto is defined as the rear end. In terms of orientation, the position of the connecting column 13 is defined as the front, and the opposite direction is defined as the rear.

[0024] In the embodiment of the present application, the upper tunnel 11a is provided to provide a movement guide for the upper rope segment of the rope 20. When the lower rope segment of the rope 20 is pulled backward, the ground blocking portion 31 located at the head end of the rope 20 is pulled forward by the rope 20 and can be blocked by the rear end of the upper tunnel 11a to prevent the head end of the rope 20 from escaping from the upper tunnel 11a. At the same time, the upper rope segment is stored in the upper tunnel 11a, thereby reducing the risk of being scratched by sharp or hard objects and breaking, thereby increasing the service life of the upper rope segment of the rope 20. Similarly, by providing the lower tunnel 12a, a movement guide can be provided for the lower rope segment of the rope 20. When the upper rope segment of the rope 20 is pulled backward, the underground blocking portion 32 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 escaping from 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 by sharp or hard objects and breaking, thereby increasing the service life of the lower rope segment of the rope 20.

[0025] Continue to refer Figures 1 to 4 In some embodiments, the top wall of the upper tunnel 11a facing away from the lower tunnel 12a may be provided with an upper notch portion 11b, which extends backward from the middle position of the slider body 10 in the front-to-back direction and passes through the rear end of the top wall of the upper tunnel 11a. The above defines the position and layout range of the upper notch portion 11b, and the upper notch portion 11b is arranged in the middle and rear area of the slider body 10.

[0026] Based on this, as Figure 7 and Figure 8 shown, when the lower blocking portion 32 holds the rope 20 and pulls it backward, the upper rope segment moves forward in the upper tunnel 11a. Through the upper rope segment, the upper blocking portion 31 provided at the leading end of the rope 20 can be pulled and driven to move forward smoothly into the upper notch portion 11b, and press against the upper notch portion 11b to apply a pushing force thereto, so as 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 portion 11b, that is, the middle and rear region of the slider body 10, thereby optimizing the stability and smoothness of the sliding of the slider body 10.

[0027] Similarly, the top wall of the lower tunnel 12a facing away from the upper tunnel 11a may be provided with a lower notch portion 12b. The lower notch portion 12b 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 lower tunnel 12a. The above defines the position and layout range of the lower notch portion 12b, and the lower notch portion 12b is arranged in the middle and rear region of the slider body 10.

[0028] Based on this, when the upper blocking portion 31 holds the rope 20 and pulls it backward, the lower rope segment moves forward in the lower tunnel 12a. Through the lower rope segment, the lower blocking portion 32 provided at the trailing end of the rope 20 can be pulled and driven to move forward smoothly into the lower notch portion 12b, and press against the lower notch portion 12b to apply a pushing force thereto, so as 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 lower notch portion 12b, that is, the middle and rear region of the slider body 10, thereby optimizing the stability and smoothness of the sliding of the slider body 10.

[0029] Referring to Figure 5 and Figure 6 , when the region of the rope 20 located in the front side space is held by hand, the upper rope segment moves forward in the upper tunnel 11a. Through the upper rope segment, the upper blocking portion 31 provided at the leading end of the rope 20 can be pulled and driven to move forward smoothly into the upper notch portion 11b, press against the upper notch portion 11b to apply a pushing force thereto, and the force that causes the slider body 10 to move forward is mainly concentrated at the upper notch portion 11b. The lower rope segment moves forward in the lower tunnel 12a. Through the lower rope segment, the lower blocking portion 32 provided at the trailing end of the rope 20 can be pulled and driven to move forward smoothly into the lower notch portion 12b, press against the lower notch portion 12b to apply a pushing force thereto, and the force that causes the slider body 10 to move forward is mainly concentrated at the lower notch portion 12b. In this way, a force can be applied to the middle and rear region of the slider body 10, thereby optimizing the stability and smoothness of the sliding of the slider body 10.

[0030] Referring 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. Among them, 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 to the rear end of the upper bottom plate 111.

[0031] In addition, the lower wing plate 12 may include a lower bottom plate 121 and a lower cover plate 122. Among them, 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 to the rear end of the lower bottom plate 121.

[0032] In the embodiments of the present application, the upper bottom plate 111 and the lower bottom plate 121 are arranged at intervals in the up-down direction. The connecting column 13 is connected between the upper bottom plate 111 and the lower bottom plate 121 and is located at the front end of the slider body 10. In this way, the stability between the upper bottom plate 111 and the lower bottom plate 121 can be ensured, and a tooth accommodation space can be formed between the upper bottom plate 111 and the lower bottom plate 121 for the teeth to pass through.

[0033] Based on the above settings, since the upper tunnel 11a extends from the front end to the rear end of the upper bottom plate 111, the upper notch 11b is provided on the top wall of the upper tunnel 11a, and when viewed from top to bottom, the upper notch 11b extends backward from the middle position in the front-rear direction of the slider body 10 and penetrates through the rear end of the top wall of the upper tunnel 11a. In this way, the upper tunnel 11a provides a movement guide for the upper rope segment. When the lower blocking portion 32 provided at the tail end of the rope 20 is pulled backward, the upper blocking portion 31 located 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 collected into the upper tunnel 11a, thereby reducing the risk of being scratched and disconnected by sharp or hard objects, improving the service life of the upper rope segment, and also being able to reduce the risk of external objects colliding with and scratching the side wall of the upper blocking portion 31 by using the side wall of the upper tunnel 11a corresponding to the upper notch 11b.

[0034] Similarly, since the lower tunnel 12a extends from the front end to the rear end of the lower bottom plate 121, the lower notch 12b is provided on the top wall of the lower tunnel 12a, and when viewed from below, the lower notch 12b extends rearward from the middle position in the front-rear direction of the slider body 10 and penetrates through the rear end of the top wall of the lower tunnel 12a. In this way, the lower tunnel 12a provides a movement guide for the lower rope segment. When the upper blocking portion 31 provided at the leading end of the rope 20 is pulled rearward, the lower blocking portion 32 located at the trailing 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 collected into the lower tunnel 12a, thereby reducing the risk of being scratched or cut by sharp or hard objects, improving the service life of the lower rope segment, and also being able to use the side wall of the lower tunnel 12a corresponding to the lower notch 12b to reduce the risk of foreign objects colliding with and scratching the side wall of the lower blocking portion 32.

[0035] Reference Figure 2 , Figure 3 , Figure 6 and Figure 8 In some embodiments, a groove 131 extending in the up-down direction may be provided on the front side wall of the connecting column 13. The upper notch of the groove 131 penetrates through the upper bottom plate 111 and communicates with the front port of the upper tunnel 11a, and the lower notch of the groove 131 penetrates through the lower bottom plate 121 and communicates with the front port of the lower tunnel 12a, and the groove 131 forms a part of the rope channel. Based on this, the middle rope segment of the rope 20 can be arranged in the groove 131 and can move up and down by means of the guiding action of the groove 131.

[0036] In some embodiments, when viewed from above, the upper cover plate 112 may extend to the upper side of the groove 131, and the lower side plate may 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 block other objects from colliding with and scratching the middle rope segment of the rope 20 located at the groove 131 in the up-down direction.

[0037] Optionally, when viewed from above, the upper cover plate 112 can at least cover half of the area of the groove 131; the lower cover plate 122 can at least cover half of the area of the groove 131.

[0038] In some embodiments, the left and right side regions of the upper cover plate 112 extend obliquely upward toward the upper bottom plate 111 from the middle position of the slider body 10 in the left-right direction to the left and right ends respectively. In this way, it is beneficial to reduce the overall volume of the slider body 10 and reduce the occupied space of the double-sided slider.

[0039] Optionally, the upper side wall of the upper cover plate 112 can be an arc surface, and its edge can be an arc chamfer. In this way, the upper side of the slider body 10 can be made more smooth to prevent the user or the fabric from being scratched by the upper side of the slider body 10.

[0040] In some embodiments, the left and right side regions of the lower cover plate 122 extend obliquely downward toward the lower bottom plate 121 from the middle of the slider body 10 in the left-right direction to the left and right ends respectively. In this way, it is beneficial to reduce the overall volume of the slider body 10 and reduce the occupied space of the double-sided slider.

[0041] Optionally, the lower side wall of the lower cover plate 122 can be an arc surface, and its edge can be an arc chamfer. In this way, the lower side of the slider body 10 can be made more smooth to prevent the user or the fabric from being scratched by the lower side of the slider body 10.

[0042] In some embodiments, the upper blocking portion 31 can be a knot formed by tying a knot at the head end of the rope 20, so as to drive the slider body 10 to move backward by the cooperation of the knot and the upper notch portion 11b.

[0043] In other embodiments, the upper blocking portion 31 can also be an upper stopper fixedly installed at the head end of the rope 20, and the upper stopper is detachably arranged in the upper notch portion 11b, so as to drive the slider body 10 to move backward by the cooperation of the upper stopper and the upper notch portion 11b. In addition, the shapes of the upper stopper and the upper notch portion 11b can be adapted to each other so that the upper stopper can be snap-fitted and fixed with the upper notch portion 11b.

[0044] Optionally, the upper side wall of the upper blocking portion 31 can be provided with concavo-convex patterns to increase the friction force so that the user is not easily slipped when pulling the upper blocking portion 31.

[0045] In addition, the lower blocking portion 32 can be a knot formed by tying a knot at the tail end of the rope 20, so as to drive the slider body 10 to move backward by the cooperation of the knot and the lower notch portion 12b.

[0046] In other embodiments, the lower blocking portion 32 can also be a lower stopper fixedly installed at the tail end of the rope 20, and the lower stopper is detachably arranged in the lower notch portion 12b, so as to drive the slider body 10 to move backward by the cooperation of the lower stopper and the lower notch portion 12b. In addition, the shapes of the lower stopper and the lower notch portion 12b can be adapted to each other so that the lower stopper can be snap-fitted and fixed with the upper notch portion 11b.

[0047] Optionally, the lower side wall of the lower blocking portion 32 can be provided with concavo-convex patterns to increase the friction force so that the user is not easily slipped when pulling the lower blocking portion 32.

[0048] Reference Figure 1, in some embodiments, the upper notch portion 11b may have an upper arc edge 11c to increase the contact area between the upper notch portion 11b and the upper blocking portion 31, so that when a pulling force is applied to the lower blocking portion 32, the upper blocking portion 31 is not easily cut by the edge of the upper notch portion 11b.

[0049] Similarly, the lower notch portion 12b may have a lower arc edge 12c to increase the contact area between the lower notch portion 12b and the lower blocking portion 32, so that when a pulling force is applied to the upper blocking portion 31, the lower blocking portion 32 is not easily cut by the edge of the lower notch portion 12b.

[0050] Based on the above double-sided slider, an embodiment of the present application also discloses a zipper, including a pair of tape strips and the above double-sided slider, and the double-sided slider can slide back and forth on a pair of zippers.

[0051] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A slider for double-sided use, characterized in that, Comprising: A slider body (10) and a rope (20) for pulling the slider body (10) to slide back and forth on the chain of a zipper; The slider body (10) includes a pair of upper wing plates (11) and lower wing plates (12) disposed up and down, and a connecting column (13). The connecting column (13) is fixed between the upper wing plate (11) and the lower wing plate (12) and is located at the front end of the slider body (10); The upper wing plate (11) is provided with an upper side tunnel (11a) penetrating through in the front and rear directions. The lower wing plate (12) is provided with a lower side tunnel (12a) penetrating through in the front and rear directions. The front ports of the upper side tunnel (11a) and the lower side tunnel extend to the front side space of the connecting column (13). The upper side tunnel (11a), the lower side tunnel (12a), and the front side space of the connecting column (13) form a rope channel; The rope (20) is movably threaded through the rope channel, and the leading end of the rope (20) can pass through the rear port of the upper side tunnel (11a) and be exposed. An upper blocking portion (31) is provided at the leading end of the rope (20). The trailing end of the rope (20) can pass through the rear port of the lower side tunnel (12a) and be exposed. A lower blocking portion (32) is provided at the trailing end of the rope (20).

2. The slider for double-sided use according to claim 1, wherein, The top wall of the upper side tunnel (11a) facing away from the lower side tunnel (12a) is provided with an upper notch portion (11b). The upper notch portion (11b) extends backward starting from the middle position of the slider body (10) in the front and rear directions 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) facing away from the upper side tunnel (11a) is provided with a lower notch portion (12b). The lower notch portion (12b) extends backward starting from the middle position of the slider body (10) in the front and rear directions and penetrates the rear end of the top wall of the lower side tunnel (12a).

3. The slider for double-sided use according to claim 2, wherein, The upper wing plate (11) includes 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). 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 plate (12) includes 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). 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 slider for double-sided use 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 notch of the groove (131) penetrates the upper side bottom plate (111) and communicates with the front port of the upper side tunnel (11a); The lower notch of the groove (131) penetrates the lower side bottom plate (121) and communicates with the front port of the lower side tunnel (12a); The groove (131) constitutes a part of the rope channel.

5. The slider for double-sided use according to claim 4, characterized in that, Viewed from top to bottom, the upper cover plate (112) extends to the upper side of the groove (131), and the lower cover plate (122) extends to the lower side of the groove (131).

6. The puller for double-sided use according to claim 3, characterized in that, The left and right side regions of the upper cover plate (112) extend obliquely towards the upper bottom plate (111) from the middle to the left and right ends of the slider body (10) in the left and right directions respectively; and / or, the left and right side regions of the lower cover plate (122) extend obliquely towards the lower bottom plate (121) from the middle to the left and right ends of the slider body (10) in the left and right directions respectively.

7. The slider for double-sided use according to any one of claims 1 to 6, characterized in that, The upper blocking portion (31) is a knot formed by tying a knot at the leading end of the rope (20); and / or, the lower blocking portion (32) is a knot formed by tying a knot at the trailing end of the rope (20).

8. The double-sided slider according to any one of claims 2 to 6, characterized in that, The upper blocking portion (31) is an upper stopper fixedly installed at the leading end of the rope (20), and the upper stopper is adapted to the shape of the upper notch portion (11b); and / or, the lower blocking portion (32) is a lower stopper fixedly installed at the trailing end of the rope (20), and the lower stopper is adapted to the shape of the lower notch portion (12b).

9. The slider for double-sided use according to any one of claims 2 to 6, characterized in that, The upper notch portion (11b) has an upper arc-shaped edge (11c); The lower notch portion (12b) has a lower arc-shaped edge (12c).

10. A zipper, characterized in that, Comprising a pair of chain tapes and the double-sided slider according to any one of claims 1 to 9, the double-sided slider being capable of sliding back and forth on a pair of the zippers.

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