Sealing type reinforced zipper

Abstract

The utility model provides a sealing type reinforced zipper, which belongs to the technical field of zippers and comprises a belt body, a pair of zipper belts arranged on the belt body and zipper pullers arranged on the zipper belts, and waterproof layers capable of being sealed in two directions are arranged on two sides of each zipper belt. The two waterproof layers on the same side of the two chain belts extend oppositely and abut against each other in an interference mode to form sealing, a first sealing strip is arranged between the two waterproof layers on the outer side of the belt body and / or between the two waterproof layers on the inner side of the belt body, and the first sealing strip is connected with the sealing side of one waterproof layer on the same side. When the zipper is closed, the first sealing strip is propped between the sealing sides of the two waterproof layers; according to the zipper, the first sealing strip is arranged between the two waterproof layers, multiple sealing can be formed, the situation that when the zipper is bent, the sealing performance is reduced due to the fact that a gap appears in the bent position is particularly avoided, and the airtight performance of the zipper is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of zippers, and particularly relates to a sealed and strengthened zipper. Background Art

[0002] A zipper is a closing device widely used in products such as clothing, luggage, tents, shoes, etc., and usually consists of a pair of cooperating toothed strips and a slider. The main function of the zipper is to provide a convenient opening and closing method, and it can quickly and safely close or open an item. Compared with traditional closing methods such as buttons and hooks, the zipper has obvious advantages in terms of operation convenience and sealing performance. Different types of zippers (such as plastic zippers, metal zippers, nylon zippers, etc.) can be selected according to specific usage occasions and requirements to meet the requirements of different products in terms of appearance, strength, durability, etc.

[0003] The patent with the publication number CN212938356U previously applied by the applicant discloses a double-bone airtight zipper, which includes a belt body, a pair of chain belts arranged on the belt body, and a zipper head arranged on the chain belts. Each of the chain belts includes a plurality of chain teeth. The chain teeth include an engaging portion and two main body portions connected to the engaging portion. An installation area with an opening and for the belt body to enter is formed between the two main body portions. The belt body is sewn and fixed in the installation area. Waterproof layers that can be sealed bidirectionally are arranged on both sides of each chain belt. The two waterproof layers on the same side of the two chain belts extend towards each other and are in interference contact to form a seal. The inventor found that when the zipper of this structure is actually used, the seal formed by the contact between the two waterproof layers is unreliable. Especially when the zipper is bent, gaps are likely to occur between the two waterproof layers at the bending part, resulting in a reduction in sealing performance. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects and deficiencies existing in the prior art, and to provide a sealed and strengthened zipper.

[0005] The technical solution adopted by the utility model is as follows: The present application provides a sealed and strengthened zipper, which includes a belt body, a pair of chain belts arranged on the belt body, and a zipper head arranged on the chain belts. Waterproof layers that can be sealed bidirectionally are arranged on both sides of each chain belt. The two waterproof layers on the same side of the two chain belts extend towards each other and are in interference contact to form a seal. A first sealing strip is arranged between the two waterproof layers on the outer side of the belt body and / or between the two waterproof layers on the inner side of the belt body. The first sealing strip is connected to the sealing side of one of the waterproof layers on the same side, and when the zipper is zipped up, the first sealing strip abuts between the sealing sides of the two waterproof layers.

[0006] In some embodiments, the cross-section of the first sealing strip is circular or oval.

[0007] In some embodiments, a beveled sealing lip surface is provided on the sealing side of the waterproof layer, and the side of the beveled sealing lip surface close to the chain belt is inclined away from the other chain belt.

[0008] In some embodiments, the inclination angle A of the beveled sealing lip surface is 30° - 60°.

[0009] In some embodiments, a curved sealing lip surface is provided on the sealing side of the waterproof layer, and the curved sealing lip surface is adapted to the first sealing strip.

[0010] In some embodiments, the chain belt includes a number of U-shaped chain teeth and a connecting portion disposed between adjacent chain teeth. The chain teeth include a bent meshing portion and plate portions on both sides of the bent meshing portion. The belt body is located between the two plate portions. The connecting portion is disposed between the plate portions of adjacent chain teeth and is integrally formed therewith.

[0011] In some embodiments, a connecting channel is provided on the chain belt. The connecting channel penetrates through the plate portion and the connecting portion, and a connecting rope is disposed in the connecting channel.

[0012] In some embodiments, a slot groove is provided on the plate portion, and the slot groove penetrates through the plate portion along the direction of the connecting portion.

[0013] In some embodiments, positioning convex points are provided on both sides of the inner wall of the plate portion corresponding to the slot groove.

[0014] In some embodiments, a second sealing strip is further included. The second sealing strip is connected to the sealing side of the other waterproof layer, and when the zipper is zipped, the first sealing strip and the second sealing strip are abutted to form a seal.

[0015] The beneficial effects of the present utility model are as follows: By providing the first sealing strip between the two waterproof layers, the present utility model can form multiple seals, especially avoiding the occurrence of gaps at the bending position when the zipper is bent, resulting in a decrease in sealing performance, and greatly improving the airtight performance of the zipper. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, obtaining other drawings based on these drawings still belongs to the scope of the present utility model.

[0017] Figure 1 Schematic diagram of a sealed and strengthened zipper in Embodiment 1 Figure 1 ;

[0018] Figure 2 Schematic diagram of a sealed and strengthened zipper in Embodiment 1 Figure 2 ;

[0019] Figure 3 Partial sectional view of a sealed and strengthened zipper in Embodiment 1 Figure 1 ;

[0020] Figure 4 Partial sectional view of a sealed and strengthened zipper in Embodiment 1 Figure 2 ;

[0021] Figure 5 Partial schematic diagram of a sealed and strengthened zipper in Embodiment 1;

[0022] Figure 6 Partial schematic diagram of the chain tape in Embodiment 1;

[0023] Figure 7 Partial sectional view of a sealed and strengthened zipper in Embodiment 2. Detailed implementation manners

[0024] The following description provides specific application scenarios and requirements of this specification, aiming to enable those skilled in the art to manufacture and use the content in this specification. For those skilled in the art, various partial modifications to the disclosed embodiments are obvious, and the general principles defined here can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the shown embodiments, but has the broadest scope consistent with the claims.

[0025] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "longitudinal", "transverse", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0026] Secondly, the terms "first", "second" and similar words do not represent any order, quantity or importance, but are only used to distinguish different components, and should not be understood as a limitation on the embodiments of this application.

[0027] In addition, the terms "installed", "set", "provided with", "connected", and "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts.

[0028] For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] Regarding the drawings of this application, it should be clearly understood that the drawings are only for the purpose of illustration and description, and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0030] Example 1:

[0031] As Figures 1 to 6 shown, this embodiment provides a sealed reinforced zipper, which includes a belt body 1, a pair of chain belts 2 provided on the belt body 1, and a zipper head 3 provided on the chain belt 2. Waterproof layers 4 capable of two-way sealing are provided on both sides of each chain belt 2. The two waterproof layers 4 on the same side of the two chain belts 2 extend towards each other and are in interference fit to form a seal. A first sealing strip 5 is provided between the two waterproof layers 4 on the outer side of the belt body 1 and / or between the two waterproof layers 4 on the inner side of the belt body 1. The first sealing strip 5 is connected to the sealing side of one of the waterproof layers 4 on the same side. When the zipper is zipped, the first sealing strip 5 abuts between the sealing sides of the two waterproof layers 4. By adding the first sealing strip 5 between the waterproof layers 4, the gap between the two waterproof layers 4 can be effectively filled, ensuring a good sealing state even when the zipper is bent. This design effectively reduces the gap generated by bending and improves the overall sealing reliability.

[0032] Secondly, the two waterproof layers 4 form a double seal on the inner and outer sides of the zipper, and a double seal is formed again by the first sealing strip 5, thus greatly improving the sealing performance of the zipper.

[0033] Among them, the first sealing strip 5 is made of a thermoplastic elastomer. The thermoplastic elastomer is PU polyurethane or polychloroprene. One end of it close to the zipper head 3 passes through the corresponding side of the chain head 3 together with the chain belt 2 on the same side, without affecting the normal pulling of the zipper head 3.

[0034] Preferably, the first sealing strip 5 is adhesively bonded to the sealing side of one of the waterproof layers 4.

[0035] The cross-section of the first sealing strip 5 is circular or oval. In this embodiment, it is preferred that the cross-section of the first sealing strip 5 is circular.

[0036] The sealed side of the waterproof layer 4 is provided with an inclined surface type sealing lip surface 41. The side of the inclined surface type sealing lip surface 41 close to the chain belt 2 is inclined in a direction away from the other chain belt 2. The inclined surface is arranged such that when the zipper is closed, the inclined surface type sealing lip surface 41 can be closely attached, increasing the pressure on the contact surface, thereby further improving the sealing effect. Among them, the inclination angle A of the inclined surface type sealing lip surface 41 is 30° - 60°, and the preferred inclination angle A is 40°.

[0037] The chain belt 2 includes a number of U-shaped chain teeth 21 and a connecting portion 22 arranged between adjacent chain teeth 21. The chain teeth 21 include a bent meshing portion 211 and plate portions 212 located on both sides of the bent meshing portion 211. The belt body 1 is located between the two plate portions 212. The connecting portion 22 is arranged between the plate portions 212 of adjacent chain teeth 21 and is integrally formed therewith, improving the overall strength of the chain belt 2 and extending the service life of the zipper.

[0038] A connecting channel is provided on the chain belt 2. The connecting channel penetrates through the plate portion 212 and the connecting portion 22. A connecting rope 6 is arranged in the connecting channel, further enhancing the overall strength of the chain belt 2 and preventing a single chain tooth 21 from falling off.

[0039] A sewing groove 213 is provided on the plate portion 212. The sewing groove 213 penetrates through the plate portion 212 along the direction of the connecting portion 22. When sewing the chain belt 2 to the belt body 1, the sewing thread just fits into the sewing groove 213, making the chain belt 2 more firmly attached to the belt body 1 and not easily causing a single chain tooth 21 to be skewed or fall off.

[0040] Positioning convex points 214 are provided on both sides of the inner wall of the plate portion 212 corresponding to the sewing groove 213. After the chain belt 2 is sewn to the belt body 1, the positioning convex points 214 form a pressing force with the belt body 1, making the connection between the chain belt 2 and the belt body 1 more firm and reliable.

[0041] Embodiment Two:

[0042] As Figure 7 shown, based on Embodiment One, in this embodiment, a second sealing strip 8 is added. The second sealing strip 8 is connected to the sealed side of the other waterproof layer 4. When the zipper is zipped up, the first sealing strip 5 abuts against the second sealing strip 8 to form a seal. The second sealing strip 8 and the first sealing strip 5 are the same sealing strips. Using two sealing strips has less influence on the pulling of the zipper head 3.

[0043] The sealed side of the waterproof layer 4 is provided with a curved surface type sealing lip surface 42. The curved surface type sealing lip surface 42 is adapted to both the first sealing strip 5 and the second sealing strip 8. In this way, a stable support is formed when the two sealing strips are abutted against each other, thereby ensuring the reliability of the seal at this place.

[0044] In summary, after reading this detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure may be presented by way of example only and may not be limiting. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be proposed by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0045] In addition, it should be understood that in the foregoing description of the embodiments of this application, for the purpose of helping to understand a feature and for the purpose of simplifying this application, this application combines various features in a single embodiment, drawing, or its description. However, this does not mean that the combination of these features is necessary. When reading this application, those skilled in the art may very well mark out some of the devices as separate embodiments for understanding. That is to say, the embodiments in this application can also be understood as the integration of multiple sub-embodiments. And it also holds when the content of each sub-embodiment is less than all the features of a single foregoing disclosed embodiment.

[0046] Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed in this application are merely examples and not limitations. Those skilled in the art can adopt alternative configurations according to the embodiments in this application to implement the application in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. A sealed reinforced zipper, comprising a belt body (1), a pair of chain belts (2) arranged on the belt body (1), and a zipper head (3) arranged on the chain belts (2), both sides of each of the chain belts (2) are provided with a bidirectionally sealable waterproof layer (4), and the two waterproof layers (4) on the same side of the two chain belts (2) extend towards each other and interfere with each other to form a seal, characterized in that: A first sealing strip (5) is provided between the two waterproof layers (4) on the outer side of the belt body (1) and / or between the two waterproof layers (4) on the inner side of the belt body (1); the first sealing strip (5) is connected to the sealing side of one of the waterproof layers (4) on the same side, and when the zipper is closed, the first sealing strip (5) abuts between the sealing sides of the two waterproof layers (4).

2. A sealed reinforced zipper according to claim 1, characterized in that: The cross section of the first sealing strip (5) is circular or elliptical.

3. A sealed reinforced zipper according to claim 2, characterized in that: The sealing side of the waterproof layer (4) is provided with a beveled sealing lip surface (41), and the beveled sealing lip surface (41) is inclined in a direction away from the other chain belt (2) on the side close to the chain belt (2).

4. A sealed reinforced zipper according to claim 3, characterized in that: The inclination angle A of the bevel-type sealing lip surface (41) is 30°-60°.

5. The sealed reinforced zipper according to claim 2, characterized in that: The sealing side of the waterproof layer (4) is provided with a curved sealing lip surface (42), and the curved sealing lip surface (42) is compatible with the first sealing strip (5).

6. The sealed reinforced zipper according to claim 1, characterized in that: The chain belt (2) comprises a plurality of U-shaped chain teeth (21) and a connecting portion (22) arranged between adjacent chain teeth (21); the chain teeth (21) comprise a bent meshing portion (211) and a plate portion (212) located on both sides of the bent meshing portion (211); the belt body (1) is located between the two plate portions (212); the connecting portion (22) is arranged between the plate portions (212) of adjacent chain teeth (21) and is integrally formed therewith.

7. A sealed reinforced zipper according to claim 6, characterized in that: The chain belt (2) is provided with a connection channel, the connection channel passes through the plate portion (212) and the connection portion (22), and a connection rope (6) is provided in the connection channel.

8. The sealed reinforced zipper according to claim 6, characterized in that: The plate portion (212) is provided with a suture groove (213), and the suture groove (213) penetrates the plate portion (212) along the direction of the connecting portion (22).

9. The sealed reinforced zipper according to claim 8, characterized in that: Positioning protrusions (214) are provided on both sides of the inner wall of the plate portion (212) corresponding to the suture groove (213).

10. A sealed reinforced zipper according to any one of claims 1 to 9, characterized in that: It also includes a second sealing strip (8), which is connected to the sealing side of another waterproof layer (4), and when the zipper is closed, the first sealing strip (5) and the second sealing strip (8) abut against each other to form a seal.

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