Puller structure of double-layer zipper and double-layer zipper

Abstract

The utility model discloses a kind of puller structure and double-layer zipper of double-layer zipper, it is related to zipper technical field, wherein, puller structure includes substrate, pull handle and two cover plates;Wherein substrate is formed with two oppositely arranged mounting surfaces along vertically opposite sides respectively, each mounting surface is connected with mounting seat, each mounting seat is formed with movable cavity extending along vertical direction, a locking position is arranged in movable cavity, and the end of movable cavity away from substrate is formed with movable mouth;Two cover plates are set correspondingly to two mounting seats, and the side of each cover plate towards its corresponding mounting seat is provided with movable column, and locking structure is arranged on movable column;Movable column and its locking structure can be inserted into movable cavity through corresponding movable mouth, and locking structure can be locked with locking position to lock movable column on corresponding mounting seat.The utility model provides that puller structure is simple and fast to assemble, effectively improve the assembly efficiency of double-layer zipper.

Description

Technical Field

[0001] This utility model relates to the field of zipper technology, and in particular to a zipper pull structure and a double-layer zipper. Background Technology

[0002] A double-layer zipper consists of a zipper pull and two sets of zipper teeth arranged in a double layer. Before using the double-layer zipper, the zipper pull must be assembled onto the two sets of zipper teeth, so that each set of zipper teeth engages with the two locking channels arranged in a double layer within the zipper pull, thus completing the assembly of the double-layer zipper. However, in the process of engaging the two sets of zipper teeth into the two locking channels, the direction and position of the two sets of zipper teeth need to be adjusted separately so that the two sets of zipper teeth match the position and direction of the two locking channels, thus enabling them to engage smoothly. This makes the entire assembly process of the double-layer zipper rather cumbersome and inefficient. Utility Model Content

[0003] The main purpose of this utility model is to propose a zipper pull structure and a double-layer zipper, aiming to solve the technical problem that the assembly process of double-layer zippers is relatively cumbersome and the assembly efficiency is low.

[0004] To achieve the above objectives, the double-layer zipper pull structure proposed in this utility model includes: The substrate has two opposing mounting surfaces formed on its vertically opposite sides. Each mounting surface is connected to a mounting base, and each mounting base has a vertically extending movable cavity. A locking position is provided in the movable cavity, and a movable opening is formed at the end of the movable cavity away from the substrate. Two cover plates are provided, each corresponding to one of the two mounting seats. Each cover plate has a movable post on its side facing the corresponding mounting seat, and the movable post has a locking structure. The movable post and its locking structure can extend into the movable cavity through the corresponding movable opening, and the locking structure can engage with the locking position to lock the movable post onto the corresponding mounting seat. Each cover plate has a vertically arranged side plate connected to its outer edge. Each cover plate, its connected side plate, and the base plate form a locking channel extending laterally. The locking channel has a first locking opening and a second locking opening at its two ends laterally. The first locking opening and the second locking opening are used for a zipper tooth of the double-layer zipper to pass through the locking channel, and the diameter of the first locking opening is larger than the diameter of the second locking opening. A pull handle is provided on the side of any of the cover plates opposite to the base plate.

[0005] In one embodiment, each of the movable columns has a locking cavity, and the cavity wall of each locking cavity has a first locking opening. The cavity wall of the movable cavity is provided with a locking position, and the locking position forms a second locking opening. The locking structure includes a locking block and a first elastic member connected to the locking block. The first elastic member is installed in the locking cavity. The locking block is disposed at the first locking opening and can extend out of the first locking opening or retract into the locking cavity relative to the movable column under the action of the first elastic member. When the locking block extends into the movable cavity and aligns with the second locking opening, it can extend out of the first locking opening and insert into the second locking opening to lock and engage with the second locking opening.

[0006] In one embodiment, the locking block has an inclined surface on the side opposite to the locking cavity, and the inclined surface is inclined towards the substrate from inside the locking cavity to outside the locking cavity.

[0007] In one embodiment, each of the locking cavities has two longitudinally opposite cavity walls forming two first locking ports, and each of the movable cavities has two longitudinally opposite cavity walls forming two second locking ports. The locking structure includes two locking blocks, with the two ends of the first elastic member respectively connected to the two locking blocks. The two locking blocks are respectively disposed at the two first locking ports and can extend out of the two first locking ports or retract into the locking cavity relative to the movable post. When the two locking blocks are inserted into the movable cavity and aligned with the second locking ports, they can respectively extend out of the first locking ports and insert into the second locking ports to lock and engage with the second locking ports respectively.

[0008] In one embodiment, a plurality of spaced-apart first elastic members are connected between the two locking blocks within each locking cavity.

[0009] In one embodiment, each of the mounting surfaces is provided with an elastic structure, and each elastic structure is disposed in the movable cavity of the mounting base corresponding to its mounting surface. Each movable cavity has a vertically arranged elastic structure, and the two ends of the elastic structure along the vertical direction are respectively connected to the substrate and the movable column in the movable cavity where it is located.

[0010] In one embodiment, the elastic structure includes a plurality of spaced-apart second elastic elements, each of the second elastic elements being arranged vertically, and each of the second elastic elements having its two ends connected to the substrate and the movable column within the movable cavity, respectively.

[0011] In one embodiment, each of the mounting bases has an arcuate surface on the side near the first locking opening.

[0012] In one embodiment, each of the mounting bases has a guide protrusion formed on the side near the second lock opening. The guide protrusion protrudes toward the second lock opening, and the longitudinal dimension of the guide protrusion gradually decreases along the direction from the first lock opening to the second lock opening.

[0013] This utility model also proposes a double-layer zipper, wherein the double-layer zipper uses the above-mentioned zipper pull structure.

[0014] The technical solution of this utility model involves placing two sets of zipper teeth into two locking channels, and then pressing down on two cover plates to move the movable posts on the cover plates relative to the mounting seats on both sides of the base plate towards the base plate, thereby moving the side plates on each cover plate closer to the base plate. When the side plates on the cover plates move closer to the base plate, they limit the two sets of zipper teeth within the two locking channels, preventing them from disengaging through the gap between the side plates and the base plate, thus ensuring the two zipper teeth are engaged within the two locking channels. Finally, a locking structure locks the two movable posts onto their corresponding mounting seats, preventing the two cover plates and their side plates from moving further. This allows the side plates on the cover plates to continuously limit the two sets of zipper teeth within the two locking channels, ensuring the two sets of zipper teeth are continuously engaged within the two locking channels, thus completing the assembly of the double-layer zipper. The assembly is simple and quick, effectively improving the assembly efficiency of the double-layer zipper. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of an embodiment of the slider structure provided by this utility model; Figure 2 A side view schematic diagram of an embodiment of the zipper pull structure provided by this utility model; Figure 3 A front view schematic diagram of an embodiment of the zipper pull structure provided by this utility model; Figure 4 A schematic diagram of a partial structure of an embodiment of the slider structure provided by this utility model; Figure 5 A schematic diagram of the mounting base and movable column in one embodiment of the pull head structure provided by this utility model; Figure 6 A schematic diagram of the mounting base in one embodiment of the zipper pull structure provided by this utility model.

[0017] Explanation of icon numbers: 100. Pull handle structure; 10. Base plate; 11. Mounting surface; 12. Mounting base; 121. Second locking port; 122. Arc surface; 123. Guide protrusion; 13. Locking position; 14. Movable cavity; 15. Movable opening; 20. Cover plate; 21. Movable column; 211. Locking cavity; 212. First locking port; 22. Side plate; 30. Pull handle; 40. Locking structure; 41. First elastic element; 42. Locking block; 421. Inclined surface; 50. Locking channel; 51. First locking port; 52. Second locking port; 60. Elastic structure; 61. Second elastic element; 70. Pull handle.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] This utility model proposes a zipper pull structure 100 for a double-layer zipper.

[0023] Please see Figures 1 to 6 In one embodiment of this utility model, the pull head structure 100 includes a base plate 10, a pull handle 7030, and two cover plates 20; wherein the base plate 10 has two opposing mounting surfaces 11 formed on its vertically opposite sides, each mounting surface 11 is connected to a mounting seat 12, each mounting seat 12 has a vertically extending movable cavity 14, a locking position 13 is provided in the movable cavity 14, and a movable opening 15 is formed at the end of the movable cavity 14 away from the base plate 10; the two cover plates 20 are respectively provided corresponding to the two mounting seats 12, and each cover plate 20 has a movable post 21 on the side facing its corresponding mounting seat 12, and a locking structure 40 is provided on the movable post 21; the movable post 21 and its locking structure The structure 40 can extend into the movable cavity 14 through the corresponding movable opening 15, and the locking structure 40 can lock and engage with the locking position 13 to lock the movable column 21 onto the corresponding mounting base 12; the outer edge of each cover plate 20 is connected to a vertically arranged side plate 22, and each cover plate 20, the side plate 22 connected thereto, and the base plate 10 enclose a locking channel 50 extending in the horizontal direction. The two ends of the locking channel 50 in the horizontal direction are respectively formed with a first locking opening 51 and a second locking opening 52. The first locking opening 51 and the second locking opening 52 are used for a zipper tooth of the double-layer zipper to pass through the locking channel 50, and the diameter of the first locking opening 51 is larger than the diameter of the second locking opening 52; a pull handle 7030 is provided on the side of any cover plate 20 away from the base plate 10.

[0024] Vertical Figure 1 The vertical direction is, and the horizontal direction is Figure 1 The left and right directions; the vertical direction is Figure 1 The front and back directions in the middle.

[0025] In the technical solution of this utility model, two cover plates 20 are respectively provided on the upper and lower sides of the substrate 10. Each cover plate 20 is connected to two side plates 22 on both sides along the front-back direction. The side plates 22 on each cover plate 20 extend toward the substrate 10 in the front-back direction. Each cover plate 20, the two side plates 22 connected to the cover plate 20, and the substrate 10 enclose to form a locking channel 50. A first locking opening 51 and a second locking opening 52 are respectively formed on the left and right sides of the locking channel 50. The dimension of the first locking opening 51 in the front-back direction is larger than the dimension of the second locking opening 52 in the front-back direction. When the zipper head structure 100 provided by this utility model is pulled in the direction from the first locking opening 51 to the second locking opening 52, the two sets of zipper teeth can be closed; when the zipper head structure 100 provided by this utility model is pulled in the opposite direction, the two sets of zipper teeth can be opened. When assembling the zipper, simply place the two sets of zipper teeth into the two locking channels 50, and then press the two cover plates 20 to move the movable posts 21 on the two cover plates 20 relative to the mounting seats 12 on both sides of the base plate 10 toward the base plate 10, so that the side plates 22 on each cover plate 20 move closer to the base plate 10. When the side plates 22 on the two cover plates 20 move closer to the base plate 10, they can limit the two sets of zipper teeth in the two locking channels 50, so that the two sets of zipper teeth cannot disengage from the two locking channels 50 through the gap between the side plates 22 on the two cover plates 20 and the base plate 10, thereby enabling the two zipper teeth to engage in the two locking channels 50. Finally, the two movable posts 21 are locked to their corresponding mounting seats 12 by the locking structure 40, so that the two cover plates 20 and the side plates 22 on the two cover plates 20 can no longer move. Thus, the side plates 22 on the two cover plates 20 can continuously limit the two sets of zipper teeth in the two locking channels 50, so that the two sets of zipper teeth can be continuously locked into the two locking channels 50, thereby completing the assembly of the double-layer zipper. The assembly is simple and fast, effectively improving the assembly efficiency of the double-layer zipper.

[0026] In one embodiment of this utility model, each movable column 21 has a locking cavity 211, and the cavity wall of each locking cavity 211 has a first locking opening 212. The cavity wall of the movable cavity 14 is provided with a locking position, and the locking position forms a second locking opening 121. The locking structure includes a locking block 42 and a first elastic member 41 connected to the locking block 42. The first elastic member 41 is installed in the locking cavity 211. The locking block 42 is disposed at the first locking opening 212 and can extend out of the first locking opening 212 or retract into the locking cavity relative to the movable column 21 under the action of the first elastic member 41. When the locking block 42 extends into the movable cavity 14 and is aligned with the second locking opening 121, it can extend out of the first locking opening 212 and insert into the second locking opening 121 to lock and engage with the second locking opening 121.

[0027] Specifically, such as Figure 5As shown, the cavity wall of the movable cavity 14 within each mounting base 12 has a first locking opening 212, and each movable column 21 has a locking cavity 211. Correspondingly, the cavity wall of the movable cavity 14 also forms a second locking opening 121. The locking structure 40 mainly consists of a locking block 42 and a first elastic member 41 connected to the locking block 42. The first elastic member 41 is installed within the locking cavity 211, while the locking block 42 is located at the first locking opening 212. Under the elastic force of the first elastic member 41, the locking block 42 can extend out of the first locking opening 212 or retract into the locking cavity 211 relative to the movable column 21. When the movable column 21 passes through the movable opening 15 and extends into the movable cavity 14, causing the locking block 42 to be inserted into the movable cavity 14 and aligned with the second locking opening 121, the locking block 42 will extend out of the first locking opening 212 under the elastic force of the first elastic element 41 and accurately insert into the second locking opening 121, thereby achieving a stable locking fit between the movable column 21 and the mounting base 12. When it is necessary to lock the movable column 21 on the cover plate 20 onto the mounting base 12, first move the movable column 21 toward the movable cavity 14 of the mounting base 12, so that the locking block 42 on the movable column 21 is aligned with the second locking opening 121 on the cavity wall of the movable cavity 14. As the movable column 21 is further advanced, when the locking block 42 is fully aligned with the second locking port 121, under the restoring force of the first elastic element 41, the locking block 42 quickly pops out and inserts into the second locking port 121, thus completing the locking of the movable column 21 with the mounting base 12. The operation is simple, and automatic locking can be achieved by simply pushing the first elastic element 41, which greatly improves the convenience and efficiency of assembly.

[0028] In one embodiment of the present invention, the locking block 42 has an inclined surface 421 formed on the side opposite to the locking cavity 211. The inclined surface 421 is inclined from the inside of the locking cavity 211 toward the outside of the locking cavity 211 toward the substrate 10.

[0029] Specifically, such as Figure 5 As shown, during the vertical movement of the movable column 21 relative to the mounting base 12 toward the substrate 10, the inclined surface 421 abuts against the end of the mounting base 12 near the substrate 10, causing the locking block to move into the locking cavity 211, thus retracting the locking block from the locking port into the locking cavity 211. As the movable column 21 advances further, when the locking block 42 is fully aligned with the second locking port 121, under the restoring force of the first elastic member 41, the locking block 42 pops out from the first locking port 212 and into the locking cavity 211, thus completing the locking of the movable column 21 with the mounting base 12.

[0030] In one embodiment of this utility model, each locking cavity 211 has two first locking openings 212 formed on its two longitudinally opposite cavity walls, and each movable cavity 14 has two second locking openings 121 formed on its two longitudinally opposite cavity walls. The locking structure includes two locking blocks 42. The two ends of the first elastic member 41 are respectively connected to the two locking blocks. The two locking blocks are respectively disposed at the two first locking openings 212 and can extend out of the two first locking openings 212 or retract into the locking cavity relative to the movable post 21. When the two locking blocks 42 are inserted into the movable cavity 14 and aligned with the second locking openings 121, they can respectively extend out of the first locking openings 212 and insert into the second locking openings 121 to lock and engage with the second locking openings 121 respectively.

[0031] Specifically, such as Figure 5 As shown, each locking cavity 211 has two cavity walls arranged opposite each other in the front-to-back direction, forming two first locking openings 212. Correspondingly, each movable cavity 14 has two cavity walls arranged opposite each other in the front-to-back direction, forming two second locking openings 121. The locking structure includes two locking blocks 42 and an elastic element. The two ends of the elastic element are respectively connected to the two locking blocks 42, and the two locking blocks 42 are respectively located at the two first locking openings 212. Under the action of the elastic element, the two locking blocks 42 can extend out of the two first locking openings 212 or retract into the locking cavity relative to the movable column 21. When the movable column 21 passes through the movable opening 15 and extends into the movable cavity 14, the two locking blocks 42 move into the movable cavity 14 under the elastic force of the elastic element until they align with the two second locking openings 121. By setting the cooperation of the two locking blocks 42, the two first locking openings 212, and the two second locking openings 121, the stability and reliability of the connection between the movable column 21 and the mounting base 12 are greatly improved.

[0032] In one embodiment of this utility model, multiple spaced-apart first elastic elements 41 connect two locking blocks within each locking cavity 211. These spaced-apart first elastic elements 41 connect the two locking blocks 42, significantly improving the stability and reliability of the locking structure 40. The uniform distribution of the multiple elastic elements ensures that the locking blocks 42 experience uniform force during extension and retraction, avoiding jamming or displacement caused by uneven force distribution, and improving the accuracy and consistency of locking.

[0033] In one embodiment of the present invention, an elastic structure 60 is installed on each mounting surface 11. Each elastic structure 60 is disposed in the movable cavity 14 of the mounting base 12 corresponding to its mounting surface 11. Each movable cavity 14 has a vertically arranged elastic structure 60. The two ends of the elastic structure 60 along the vertical direction are respectively connected to the base plate 10 and the movable column 21 in the movable cavity 14.

[0034] Specifically, such as Figure 6As shown, each movable cavity 14 is provided with an elastic structure 60 along the vertical direction. The two ends of the elastic structure 60 along the vertical direction are connected to the base plate 10 and the movable column 21 within the movable cavity 14, respectively. During actual assembly, when the movable column 21 extends into the movable cavity 14 through the movable opening 15, the elastic structure 60 is compressed or stretched. When it is necessary to lock the movable column 21 to the mounting base 12, the elastic force of the elastic structure 60 can provide a stable upward thrust to the movable column 21, pushing the locking block on the movable column 21 against its corresponding second locking port 121, thereby ensuring that the locking block can stably engage with the second locking port 121. Furthermore, the elastic structure 60 also ensures that the movable column 21 is always connected to the base plate 10 and can move relative to the mounting base 12 in the vertical direction.

[0035] In one embodiment of the present invention, the elastic structure 60 includes a plurality of spaced second elastic members 61, each second elastic member 61 being arranged vertically, and each second elastic member 61 having its two ends connected to the substrate 10 and the movable column 21 in the movable cavity 14, respectively.

[0036] Furthermore, such as Figure 6 As shown, the elastic structure 60 includes a plurality of second elastic elements 61 spaced apart along the front-back direction or along the left-right direction. These second elastic elements 61 allow for smoother pushing of the movable column 21, resulting in a more stable abutment between the locking block on the movable column 21 and its corresponding second locking port 121. Furthermore, this ensures a more secure connection of the movable column 21 to the base plate 10, leading to higher structural reliability.

[0037] In one embodiment of the present invention, each mounting base 12 has an arc surface 122 formed on the side near the first locking opening 51.

[0038] Specifically, such as Figure 4 As shown, the arc surface 122 guides the zipper teeth smoothly into the locking track 50, reducing the risk of jamming or damage to the zipper teeth due to sharp edges. At the same time, the design of the arc surface 122 also ensures that after the zipper teeth enter the locking track 50, they slide smoothly along the direction of the locking track 50 until they are completely engaged in the locking track 50, thereby achieving fast and accurate assembly.

[0039] In one embodiment of the present invention, each mounting base 12 has a guide protrusion 123 formed on the side near the second locking opening 52. The guide protrusion 123 protrudes toward the second locking opening 52, and the longitudinal dimension of the guide protrusion 123 gradually decreases along the direction from the first locking opening 51 to the second locking opening 52.

[0040] Specifically, such as Figure 4As shown, the guide protrusion 123 extends in the left and right direction, and the size of the guide protrusion 123 gradually decreases towards the second locking opening 52 in the front and back direction. The guide protrusion 123 can effectively guide the movement of the zipper teeth in the locking channel 50, ensuring that the zipper teeth pass smoothly through the locking channel 50 during the closing or opening process, reducing the risk of jamming and misalignment, and improving the smoothness of zipper use.

[0041] This utility model also proposes a double-layer zipper, which uses a zipper head structure. The specific structure of the zipper head structure is as described in the above embodiments. Since this double-layer zipper adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0042] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of the present utility model.

Claims

1. A zipper pull structure for a double-layer zipper, characterized in that, The slider structure includes: The substrate has two opposing mounting surfaces formed on its vertically opposite sides. Each mounting surface is connected to a mounting base, and each mounting base has a vertically extending movable cavity. A locking position is provided in the movable cavity, and a movable opening is formed at the end of the movable cavity away from the substrate. Two cover plates are provided, each corresponding to one of the two mounting seats. Each cover plate has a movable post on its side facing the corresponding mounting seat, and the movable post has a locking structure. The movable post and its locking structure can extend into the movable cavity through the corresponding movable opening, and the locking structure can engage with the locking position to lock the movable post onto the corresponding mounting seat. Each cover plate has a vertically arranged side plate connected to its outer edge. Each cover plate, its connected side plate, and the base plate form a locking channel extending laterally. The locking channel has a first locking opening and a second locking opening at its two ends laterally. The first locking opening and the second locking opening are used for a zipper tooth of the double-layer zipper to pass through the locking channel, and the diameter of the first locking opening is larger than the diameter of the second locking opening. A pull handle is provided on the side of any of the cover plates opposite to the base plate.

2. The zipper pull structure of the double-layer zipper as described in claim 1, characterized in that, Each of the movable columns has a locking cavity, and each locking cavity has a first locking opening in its cavity wall. The movable cavity has a locking position in its cavity wall, and the locking position forms a second locking opening. The locking structure includes a locking block and a first elastic member connected to the locking block. The first elastic member is installed in the locking cavity. The locking block is located at the first locking opening and can extend out of the first locking opening or retract into the locking cavity relative to the movable column. When the locking block extends into the movable cavity and aligns with the second locking opening, it can extend out of the first locking opening and insert into the second locking opening to lock and engage with the second locking opening.

3. The slider structure as described in claim 2, characterized in that, The locking block has an inclined surface on the side opposite to the locking cavity, and the inclined surface is inclined towards the substrate from inside the locking cavity to outside the locking cavity.

4. The zipper pull structure of the double-layer zipper as described in claim 3, characterized in that, Each of the locking cavities has two longitudinally opposite cavity walls forming two first locking ports, and each of the movable cavities has two longitudinally opposite cavity walls forming two second locking ports. The locking structure includes two locking blocks. The two ends of the first elastic member are respectively connected to the two locking blocks. The two locking blocks are respectively disposed at the two first locking ports and can extend out of the two first locking ports or retract into the locking cavity relative to the movable column. When the two locking blocks are inserted into the movable cavity and aligned with the second locking ports, they can respectively extend out of the first locking ports and respectively insert into the second locking ports to lock and engage with the second locking ports.

5. The slider structure as described in claim 4, characterized in that, Multiple first elastic elements are connected between the two locking blocks in each of the locking cavities at intervals.

6. The zipper pull structure of the double-layer zipper as described in any one of claims 1 to 5, characterized in that, Each of the mounting surfaces is equipped with an elastic structure, and each elastic structure is disposed in the movable cavity of the mounting base corresponding to its mounting surface. Each movable cavity has a vertically arranged elastic structure, and the two ends of the elastic structure along the vertical direction are respectively connected to the base plate and the movable column in the movable cavity where it is located.

7. The zipper pull structure of the double-layer zipper as described in claim 6, characterized in that, The elastic structure includes a plurality of spaced second elastic elements, each of which is arranged vertically, and both ends of each second elastic element are connected to the substrate and the movable column in the movable cavity where it is located, respectively.

8. The zipper pull structure of the double-layer zipper as described in any one of claims 1 to 5, characterized in that, Each of the mounting bases has an arc-shaped surface on the side near the first locking opening.

9. The zipper pull structure of the double-layer zipper as described in any one of claims 1 to 5, characterized in that, Each of the mounting bases has a guide protrusion on the side near the second lock opening. The guide protrusion protrudes toward the second lock opening, and the longitudinal dimension of the guide protrusion gradually decreases along the direction from the first lock opening to the second lock opening.

10. A double-layer zipper, characterized in that, The double-layer zipper uses the zipper pull structure as described in any one of claims 1 to 9.

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