Zipper chain and zipper

Abstract

The application relates to a zipper and a zipper tape, the zipper tape comprising a first chain belt, a second chain belt and two stop components. The first chain belt comprises a first coupling belt and a row of first teeth attached to the coupling edge of the first coupling belt; the second chain belt comprises a second coupling belt and a row of second teeth attached to the coupling edge of the second coupling belt. Each stop component comprises a first stop piece and a second stop piece, and the first stop piece is provided with a guide channel penetrating in the direction of the operation axis. The two rows of teeth are interlocked or disengaged during the reciprocating movement of the sliders along the operation axis, and the two coupling belts can be connected or disengaged from each other when the two sliders move into the same guide channel. The guide channel provides a unified movement path for the sliders of the zipper to ensure that the two sliders enter synchronously, avoiding the jam caused by the deviation of the sliders. The stop components arranged at the two ends of the zipper tape allow the two ends of the zipper tape to be disengaged independently, significantly improving the smoothness and reliability of the operation of the zipper, and enhancing the applicability of the zipper.

Description

Technical Field

[0001] This application relates to the field of zippers, and in particular to a zipper strip and a zipper. Background Technology

[0002] Double-opening zippers are widely used in various clothing and bag products. Traditional double-opening zippers typically require both zipper pulls to be pulled to a specific bottom position to open, which is inconvenient for long garments or other occasions requiring frequent zipper opening and closing. For example, after pulling the zipper to the top, to open it again, the user must first move both zipper pulls down to the bottom to align them, increasing the cumbersome process. Furthermore, when closing traditional double-opening zippers, the precise alignment of the zipper sides can sometimes make insertion difficult, especially with delicate zipper structures, leading to misalignment and preventing the zipper from closing. Utility Model Content

[0003] Therefore, it is necessary to provide a zipper strip and zipper that are easy to insert and can be easily detached from both ends, thereby improving the ease of use and reliability of the zipper.

[0004] This utility model first provides a zipper strip for use in zippers. The zipper includes two zipper heads with opposite operating axes and a first chain belt. The first chain belt includes a first connecting strip and a row of first chain teeth attached to the connecting edge of the first connecting strip.

[0005] The second chain belt includes a second connecting belt and a row of second chain teeth attached to the connecting edge of the second connecting belt;

[0006] Two stop components are disposed opposite to each other at both ends of the zipper strip. Each stop component includes a first stop and a second stop. One of the first stop and the second stop is attached to the connecting edge of the first connecting strip, and the other is attached to the connecting edge of the second connecting strip. The first stop has a through guide channel along the direction of the operating axis.

[0007] The second chain tooth and the first chain tooth interlock or disengage during the reciprocating movement of the zipper head along the operating axis, and the first connecting strip and the second connecting strip can connect or disengage with each other when the two zipper heads move into the same guide channel.

[0008] In the aforementioned zipper strip, the guide channel provides a unified movement path for the two zipper heads, constraining their movement trajectory. This ensures that when the two zipper heads move into the same guide channel, the second stop can simultaneously insert or disengage from both zipper heads, enabling rapid connection or disengagement of the first and second connecting straps. This avoids jamming caused by zipper head misalignment, improves the smoothness and reliability of zipper operation, and increases the success rate of inserting and disengaging the second stop, achieving easy insertion and disengagement. Simultaneously, stop components are provided at both ends of the zipper strip, allowing the connection or disengagement of the first and second connecting straps to occur whenever the two zipper heads move synchronously into the guide channel at either end. This enables both ends of the zipper strip to disengage independently, enhancing the convenience of zipper use.

[0009] In one embodiment, the first stop includes a guide portion and a limiting portion spaced apart on the side of the guide portion away from the connecting edge of the first connecting strip, and the guide portion and the limiting portion form the guide channel.

[0010] This design allows the guide section to smoothly guide the zipper head into the guide channel, while the limiting section restricts the movement range of the zipper head within the guide channel. This ensures that the zipper head can accurately engage and disengage the second and first chain teeth, improving the overall stability and reliability of the zipper. Furthermore, the guide channel is simple to form, and the distance between the guide section and the limiting section can be adjusted according to the size of the zipper head, thereby improving the compatibility of the zipper.

[0011] In one embodiment, the minimum distance from the end of the first connecting band to the first chain tooth is greater than the minimum distance from the end of the limiting portion away from the first chain tooth to the first chain tooth; or,

[0012] The minimum distance from the end of the second connecting band to the second chain tooth is greater than the minimum distance from the end of the limiting portion away from the second chain tooth to the second chain tooth.

[0013] This design reduces the constraint of the limiting part on the zipper pull, improving the smoothness of the zipper pull when entering or exiting the limiting part at the end away from the first or second chain tooth, thus ensuring smooth opening and closing of the zipper.

[0014] In one embodiment, the first stop further includes a connecting portion spaced between the guide portion and the limiting portion, wherein the end face of the connecting portion, the side wall of the guide portion, and the side wall of the limiting portion enclose the guide channel.

[0015] This design strengthens the connection between the guide and the limiting parts, enhances the structural strength of the guide channel, prevents deformation, and improves the durability of the zipper.

[0016] In one embodiment, the guide channel includes an entrance end near the second chain tooth, and the corners of the guide portion near the entrance end are chamfered.

[0017] This design allows the chamfered structure to act as a guide and corrector, making it easier for the zipper pull to enter the guide channel and improving the ease of use of the zipper. At the same time, the chamfered structure expands the entrance space of the guide channel, preventing the zipper pull from colliding with the guide section, reducing collision damage during insertion, ensuring that the zipper pull enters the guide channel smoothly, reducing the difficulty of operation, and improving the reliability of the zipper.

[0018] In one embodiment, the sidewall of the limiting part used to enclose the guide channel is a limiting surface, which is a contoured surface adapted to the two pull heads.

[0019] This design allows the contoured surface to fit the zipper pull's outline, providing precise positioning and preventing the zipper pull from wobbling or shifting within the guide channel, thus improving the zipper's stability.

[0020] In one embodiment, the first stop member has a first inclined surface on the side near the second stop member, and the first inclined surface gradually moves away from the second stop member in a direction away from the first chain tooth; the second stop member has a second inclined surface on the side near the first stop member, and the second inclined surface gradually moves away from the first stop member in a direction away from the second chain tooth.

[0021] With this design, the first and second inclined surfaces can guide the zipper head to align and enter the guide channel more smoothly, reducing collisions and friction between the zipper head and the stop assembly, and reducing wear and tear on the zipper.

[0022] In one embodiment, the second stop member has a reinforcing portion on the side opposite to the first stop member, and the reinforcing portion extends along the direction of the operating axis.

[0023] This design enhances the overall strength of the second stop, making it less prone to deformation and damage when subjected to the impact and friction of the zipper pull. Simultaneously, the reinforcement increases the contact area between the second stop and the first or second connecting strip, increasing the bonding strength and extending the service life of the entire stop assembly, ensuring the long-term stable use of the zipper. Furthermore, the reinforcement design reduces melting of the connecting strip during the injection molding process, further increasing the connection strength between the stop assembly and the connecting strip.

[0024] In one embodiment, a limiting member is provided at the end of the first stop member away from the first chain belt.

[0025] This design prevents the zipper pull from being pulled out excessively and detaching from the guide channel, ensuring that the zipper pull's operating range is controllable, avoiding accidental zipper detachment, and improving safety.

[0026] This utility model also provides a zipper, including two zipper heads with opposite operating axes and the zipper strip.

[0027] This design provides a unified movement path for the zipper pulls through the guide channel, ensuring that both pulls enter synchronously and avoiding jamming caused by pull misalignment. The stop components at both ends of the zipper allow the two ends of the zipper to disengage independently, significantly improving the smoothness and reliability of zipper operation and enhancing the adaptability and ease of use of the zipper. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the zipper strip provided in this application.

[0030] Figure 2 This is a schematic diagram of the structure of the first end of the zipper strip provided in this application.

[0031] Reference numerals: 1. First chain belt; 11. First chain tooth; 12. First connecting belt; 2. Second chain belt; 21. Second chain tooth; 22. Second connecting belt; 3. Stop assembly; 31. First stop; 311. Guide channel; 3111. Entrance end; 312. Guide part; 3121. First inclined surface; 313. Limiting part; 3131. Limiting surface; 314. Connecting part; 315. Chamfer structure; 316. Limiting part; 32. Second stop; 321. Second inclined surface; 322. Reinforcing part; 4. Operating axis. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0037] Double-opening zippers are widely used in various clothing and bag products. Traditional double-opening zippers typically require both zipper pulls to be pulled to a specific bottom position to open, which is inconvenient for long garments or other occasions requiring frequent zipper opening and closing. For example, after pulling the zipper to the top, to open it again, the user must first move both zipper pulls down to the bottom to align them, increasing the cumbersome process. Furthermore, when closing traditional double-opening zippers, the precise alignment of the zipper sides can sometimes make insertion difficult, especially with delicate zipper structures, leading to misalignment and preventing the zipper from closing.

[0038] To solve the above problems, such as Figures 1 to 2 As shown, this application provides a zipper strip and a zipper that are easy to insert and can be easily detached at both ends, improving the ease of use and reliability of the zipper.

[0039] like Figure 2 As shown, this application first provides a zipper strip for a zipper, which also includes two sliders with opposite operating axes 4. The zipper strip includes a first chain belt 1, a second chain belt 2, and two stop components 3.

[0040] The first zipper belt 1 includes a first connecting belt 12 and a row of first chain teeth 11 attached to the connecting edge of the first connecting belt 12; the second zipper belt 2 includes a second connecting belt 22 and a row of second chain teeth 21 attached to the connecting edge of the second connecting belt 22. Two stop components 3 are disposed opposite to each other at both ends of the zipper strip. Each stop component 3 includes a first stop 31 and a second stop 32. One of the first stop 31 and the second stop 32 is attached to the connecting edge of the first connecting belt 12, and the other is attached to the connecting edge of the second connecting belt 22. The first stop 31 has a guide channel 311 extending along the direction of the operating axis 4. The second chain teeth 21 and the first chain teeth 11 interlock or disengage during the reciprocating movement of the zipper head along the operating axis 4. The first connecting belt 12 and the second connecting belt 22 can connect or disengage with each other when the two zipper heads move into the same guide channel 311.

[0041] With this configuration, the guide channel 311 provides a unified movement path for the two zipper heads, constraining their movement trajectory. This ensures that when the two zipper heads move into the same guide channel 311, the second stop 32 can simultaneously insert or disengage from both zipper heads, enabling rapid connection or disengagement of the first connecting strip 12 and the second connecting strip 22. This avoids jamming caused by zipper head misalignment, improves the smoothness and reliability of zipper operation, and increases the success rate of inserting and disengaging the second stop 32, achieving easy insertion and easy disengagement. Simultaneously, the stop components 3 at both ends of the zipper strip ensure that the connection or disengagement of the first connecting strip 12 and the second connecting strip 22 can be achieved whenever the two zipper heads move synchronously into either end of the guide channel 311. This allows both ends of the zipper strip to be disengaged independently, enhancing the convenience of zipper use.

[0042] like Figure 1 As shown, the two ends of the zipper strip along its length are defined as the first end and the second end, respectively. In one embodiment, the first stop 31 of one stop assembly 3 is attached to the connecting edge of the first end of the first connecting strip 12, and the second stop 32 is attached to the connecting edge of the first end of the second connecting strip 22; the first stop 31 of the other stop assembly 3 is attached to the connecting edge of the second end of the first connecting strip 12, and the second stop 32 is attached to the connecting edge of the second end of the second connecting strip 22.

[0043] In another embodiment, a first stop 31 of one stop assembly 3 is attached to the connecting edge of the first end of the first connecting band 12, and a second stop 32 is attached to the connecting edge of the first end of the second connecting band 22; a second stop 32 of the other stop assembly 3 is attached to the connecting edge of the second end of the first connecting band 12, and a first stop 31 is attached to the connecting edge of the second end of the second connecting band 22.

[0044] In another embodiment, the second stop 32 of one stop assembly 3 is attached to the connecting edge of the second end of the first connecting band 12, and the first stop 31 is attached to the connecting edge of the second end of the second connecting band 22; the first stop 31 of the other stop assembly 3 is attached to the connecting edge of the second end of the first connecting band 12, and the second stop 32 is attached to the connecting edge of the second end of the second connecting band 22.

[0045] In another embodiment, the second stop 32 of one stop assembly 3 is attached to the connecting edge of the second end of the first connecting band 12, and the first stop 31 is attached to the connecting edge of the second end of the second connecting band 22; the second stop 32 of the other stop assembly 3 is attached to the connecting edge of the second end of the first connecting band 12, and the first stop 31 is attached to the connecting edge of the second end of the second connecting band 22.

[0046] In one embodiment, the first stop 31 includes a guide portion 312 and a limiting portion 313 spaced apart on the side of the guide portion 312 facing away from the connecting edge of the first connecting strip 12, forming a guide channel 311 between the guide portion 312 and the limiting portion 313. This arrangement allows the guide portion 312 to guide the zipper pull smoothly into the guide channel 311, while the limiting portion 313 restricts the movement range of the zipper pull within the guide channel 311, ensuring that the zipper pull can accurately perform the engagement and disengagement operations of the second chain tooth 21 and the first chain tooth 11, thus improving the overall stability and reliability of the zipper. Furthermore, the guide channel 311 is simple to form, and the distance between the guide portion 312 and the limiting portion 313 can be adjusted according to the size of the zipper pull, thereby improving the compatibility of the zipper strip.

[0047] like Figure 2 As shown, in another embodiment, the first stop 31 further includes a connecting portion 314 spaced between the guide portion 312 and the limiting portion 313. The end face of the connecting portion 314, the side wall of the guide portion 312, and the side wall of the limiting portion 313 enclose a guide channel 311. This arrangement strengthens the connection between the guide portion 312 and the limiting portion 313, enhances the structural strength of the guide channel 311, prevents deformation, and improves the durability of the zipper.

[0048] The guide part 312, the limiting part 313 and the connecting part 314 can be integrally formed or they can be separate structures and fixedly connected by adhesive or other means. The specific limitations of this utility model are not made here.

[0049] like Figure 2 As shown, in one embodiment, when the first stop 31 is provided on the first connecting belt 12, the minimum distance from the end of the first connecting belt 12 to the first chain tooth 11 is greater than the minimum distance from the end of the limiting portion 313 away from the first chain tooth 11 to the first chain tooth 11. That is, the limiting portion 313 does not protrude from the first connecting belt 12, and there is a certain distance between the end of the limiting portion 313 away from the first chain tooth 11 and the end of the first connecting belt 12 where the limiting portion 313 is provided. Similarly, when the first stop 31 is provided on the second connecting belt 22, the minimum distance from the end of the second connecting belt 22 to the second chain tooth 21 is greater than the minimum distance from the end of the limiting portion 313 away from the second chain tooth 21 to the second chain tooth 21. With this arrangement, the restraint of the limiting portion 313 on the zipper pull is reduced, improving the smoothness of the zipper pull when entering or exiting the end of the limiting portion 313 away from the first chain tooth 11 or the second chain tooth 21, ensuring smooth opening and closing of the zipper.

[0050] like Figure 2 As shown, in one embodiment, the guide portion 312 of the first stop 31 has a first inclined surface 3121 on the side near the second stop 32, and the first inclined surface 3121 gradually moves away from the second stop 32 in a direction away from the first chain tooth 11; the second stop 32 has a second inclined surface 321 on the side near the first stop 31, and the second inclined surface 321 gradually moves away from the first stop 31 in a direction away from the second chain tooth 21. The first inclined surface 3121 and the second inclined surface 321 form a herringbone opening between the guide portion 312 and the second stop 32. With this configuration, the first inclined surface 3121 and the second inclined surface 321 can guide the zipper pull to align and enter the guide channel 311 more smoothly, reducing collisions and friction between the zipper pull and the stop assembly 3, and reducing wear and tear on the zipper.

[0051] The angle of the ramp can be adjusted according to actual needs, and different ramp angles can be used to accommodate different types of sliders. Furthermore, the shape of the ramp can also be adjusted according to actual needs; a curved ramp can be used to more smoothly guide the slider into the guide channel 311.

[0052] In another embodiment, only the guide portion 312 of the first stop member 31 may have a first inclined surface 3121 on the side near the second stop member 32, and the first inclined surface 3121 may gradually move away from the second stop member 32 in a direction away from the first chain tooth 11; or, only the side of the second stop member 32 near the first stop member 31 may have a second inclined surface 321, and the second inclined surface 321 may gradually move away from the first stop member 31 in a direction away from the second chain tooth 21.

[0053] like Figure 2 As shown, in one embodiment, the guide channel 311 includes an entrance end 3111 near the second chain tooth 21, and the corner of the guide portion 312 near the entrance end 3111 is a chamfered structure 315. This design allows the chamfered structure 315 to provide a certain guiding and corrective function, making it easier for the zipper pull to enter the guide channel 311, thus improving the ease of use of the zipper. Simultaneously, the chamfered structure 315 expands the space at the entrance end 3111 of the guide channel 311, preventing the zipper pull from colliding with the guide portion 312, reducing collision damage during insertion, ensuring the zipper pull smoothly enters the guide channel 311, reducing operational difficulty, and improving the reliability of the zipper.

[0054] The chamfered corner structure 315 can be designed as a rounded corner, an elliptical corner, or a trapezoidal corner. Furthermore, the depth of the chamfered corner structure 315 can be adjusted according to the chain tooth height to ensure smooth insertion of the slider. It should be noted that the depth direction of the chamfered corner structure 315 refers to the direction perpendicular to the first connecting strip 12.

[0055] like Figure 2 As shown, in one embodiment, the sidewall of the limiting part 313 that surrounds the guide channel 311 is a limiting surface 3131, which is a contoured surface adapted to the two zipper pulls. This configuration allows the contoured surface to fit the zipper pull's outline, providing precise positioning and preventing the zipper pull from wobbling or shifting within the guide channel 311, thus improving the stability of the zipper. In the illustrated embodiment, the limiting surface 3131 is an arc-shaped surface convex towards the guide channel 311.

[0056] In another embodiment, the shape of the limiting surface 3131 can be a plane, a concave surface, or customized according to the shape of the slider to achieve the best matching effect. This embodiment of the present invention does not impose specific limitations.

[0057] like Figure 2As shown, in one embodiment, the second stop 32 has a reinforcing portion 322 on the side opposite to the first stop 31, and the reinforcing portion 322 extends along the direction of the operating axis 4. This arrangement enhances the overall strength of the second stop 32, making it less prone to deformation and damage when subjected to the impact and friction of the zipper pull. Simultaneously, the reinforcing portion 322 increases the contact area between the second stop 32 and the first connecting strip 12 or the second connecting strip 22, increasing the bonding strength between them, extending the service life of the entire stop assembly 3, and ensuring the long-term stable use of the zipper. Furthermore, the design of the reinforcing portion 322 reduces the melting phenomenon of the first connecting strip 12 and the second connecting strip 22 during the injection molding process, further increasing the connection strength between the stop assembly 3 and the first connecting strip 12 and the second connecting strip 22. In the illustrated embodiment, the reinforcing portion 322 is stepped, meaning its thickness is less than the thickness of other parts of the second stop 32, saving raw materials while ensuring the strength of the second stop 32, achieving a lightweight design. It should be noted that the thickness direction of the second stop 32 refers to the direction perpendicular to the first connecting strip 12.

[0058] In another embodiment, the shape and size of the reinforcing part 322 can be adjusted according to actual needs. For example, the reinforcing part 322 can be strip-shaped, block-shaped, or other shapes, and the thickness of the reinforcing part 322 can also be consistent with the overall thickness of the second stop 32 to improve the strength and stability of the stop assembly 3.

[0059] like Figure 2 As shown, in one embodiment, a limiting member 316 is provided at the end of the first stop member 31 facing away from the first chain belt 1. With this configuration, the limiting member 316 prevents the zipper from being pulled out excessively and disengaging from the guide channel 311, ensuring that the operating range of the zipper is controllable, avoiding accidental zipper detachment, and improving safety.

[0060] The limiting member 316 and the guide part 312 can be integrally formed or they can be separate structures and fixedly connected by adhesive, snap-fit ​​or other means. The connection method of the limiting member 316 and the guide part 312 can be adjusted according to actual needs. This utility model embodiment does not impose specific limitations here.

[0061] This utility model also provides a zipper, which includes two zipper heads with opposite operating axes 4 and the aforementioned zipper strip. This configuration provides a unified movement path for the zipper heads via a guide channel 311, ensuring that the two zipper heads enter synchronously and avoiding jamming caused by zipper head misalignment. The stop components 3 at both ends of the zipper strip allow the two ends of the zipper strip to disengage independently, significantly improving the smoothness and reliability of zipper operation and enhancing the zipper's adaptability and ease of use.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A zipper strip for use in a zipper, said zipper comprising two sliders with oppositely arranged operating axes (4), characterized in that, include: The first chain (1) includes a first connecting strip (12) and a row of first chain teeth (11) attached to the connecting edge of the first connecting strip (12). The second chain (2) includes a second connecting strip (22) and a row of second chain teeth (21) attached to the connecting edge of the second connecting strip (22); Two stop components (3) are disposed opposite to each other at both ends of the zipper strip. Each stop component (3) includes a first stop (31) and a second stop (32). One of the first stop (31) and the second stop (32) is attached to the connecting edge of the first connecting strip (12), and the other is attached to the connecting edge of the second connecting strip (22). The first stop (31) is provided with a through guide channel (311) along the direction of the operating axis (4). The second chain tooth (21) and the first chain tooth (11) interlock or disengage during the reciprocating movement of the zipper head along the operating axis (4), and the first connecting strip (12) and the second connecting strip (22) can connect or disengage with each other when the two zipper heads move into the same guide channel (311).

2. The zipper strip according to claim 1, characterized in that, The first stop (31) includes a guide portion (312) and a limiting portion (313) spaced apart on the side of the guide portion (312) away from the connecting edge of the first connecting strip (12), and the guide channel (311) is formed between the guide portion (312) and the limiting portion (313).

3. The zipper strip according to claim 2, characterized in that, The minimum distance from the end of the first connecting band (12) to the first chain tooth (11) is greater than the minimum distance from the end of the limiting portion (313) away from the first chain tooth (11) to the first chain tooth (11); or, The minimum distance from the end of the second connecting band (22) to the second chain tooth (21) is greater than the minimum distance from the end of the limiting part (313) away from the second chain tooth (21) to the second chain tooth (21).

4. The zipper strip according to claim 2, characterized in that, The first stop (31) further includes a connecting part (314) spaced between the guide part (312) and the limiting part (313), the end face of the connecting part (314), the side wall of the guide part (312) and the side wall of the limiting part (313) forming the guide channel (311).

5. The zipper strip according to claim 2, characterized in that, The guide channel (311) includes an entrance end (3111) near the second chain tooth (21), and the corner of the guide part (312) near the entrance end (3111) is a chamfered structure (315).

6. The zipper strip according to claim 2, characterized in that, The side wall of the limiting part (313) used to enclose the guide channel (311) is a limiting surface (3131), and the limiting surface (3131) is a contoured surface adapted to the two pull heads.

7. The zipper strip according to claim 1, characterized in that, The first stop (31) has a first inclined surface (3121) on the side near the second stop (32), and the first inclined surface (3121) gradually moves away from the second stop (32) in a direction away from the first chain tooth (11); the second stop (32) has a second inclined surface (321) on the side near the first stop (31), and the second inclined surface (321) gradually moves away from the first stop (31) in a direction away from the second chain tooth (21).

8. The zipper strip according to claim 1, characterized in that, The second stop (32) has a reinforcing part (322) on the side opposite to the first stop (31), and the reinforcing part (322) extends along the direction of the operating axis (4).

9. The zipper strip according to claim 1, characterized in that, The first stop (31) has a limiting member (316) at the end opposite to the first chain (1).

10. A zipper, characterized in that, It includes a zipper head with two operating axes (4) arranged in opposite directions and a zipper strip according to any one of claims 1-9.

Images