Waterproof plastic zipper

Abstract

The utility model discloses a waterproof plastic zipper which comprises a pair of zipper belts and a puller, the pair of zipper belts are oppositely arranged, each zipper belt is provided with cloth belts, cloth ribs and zipper tooth rows, the cloth ribs are arranged on the sides, facing each other, of the two cloth belts, the zipper tooth rows are arranged on the cloth ribs, the zipper tooth rows are mutually closed under the action of the puller, and each zipper tooth row comprises a plurality of zipper teeth. The zipper teeth are provided with tails and heads, the tails are formed on the cloth ribs, the heads extend towards the opposite zipper belts, the heads are provided with bases and tops which are adjacently arranged in the thickness direction, the free ends of the tops are closer to the tails than the free ends of the bases, and the areas, close to the free ends of the tops, of the free ends of the bases are extension parts. When the opposite zipper tooth rows are mutually closed, the extending parts abut against the cloth ribs of the opposite zipper belts, and the zipper has a good using effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to zip fastener technology, in particular to a waterproof plastic zip fastener. BACKGROUND

[0002] The waterproof pasted rubber zip fastener is a zip fastener product with waterproof function, mainly used in outdoor equipment, waterproof bags and other scenes requiring waterproof. Its advantages include: excellent waterproof performance, effectively preventing water penetration through the pasting process; strong durability, capable of bearing frequent opening and closing and harsh environment; light and flexible, without affecting the portability of the overall product. However, it also has some disadvantages: most of the waterproof zip fasteners on the market set waterproof rubber strips above the teeth, and realize sealing at the teeth by mutual extrusion of the waterproof rubber strips. When the zip fastener is pulled open or closed, the opening and closing feel is hard, and it may not be as smooth as ordinary zip fasteners. Moreover, once the waterproof rubber strip is damaged, its waterproof performance will be greatly reduced, and the use effect will be poor. SUMMARY

[0003] Therefore, the utility model aims to provide a waterproof plastic zip fastener with good use effect.

[0004] In order to achieve the above purpose, the solution of the utility model is as follows:

[0005] A waterproof plastic zip fastener includes a pair of chain belts and a puller. The pair of chain belts are oppositely arranged. The chain belt has a cloth belt, a cloth bar and a tooth row. The cloth bar is arranged on the side of the two cloth belts facing each other. The tooth row is arranged on the cloth bar. The tooth row is pulled together by the puller. The tooth row includes a plurality of teeth. The teeth have a tail and a head. The tail is formed on the cloth bar. The head extends towards the opposite chain belt. The head has a base and a top arranged adjacent in the thickness direction. The free end of the top is arranged closer to the tail than the free end of the base. The part of the base close to the top is an extension. When the opposite tooth rows are pulled together, the free end of the extension abuts against the cloth bar of the opposite chain belt.

[0006] Further, the cloth belt has a surface and a back. The surface is on the same side as the top. The back is on the same side as the base.

[0007] Further, the waterproof layer is arranged on the surface.

[0008] Further, the tail part of the tooth is formed on the waterproof layer.

[0009] Further, the base has a neck and a head. The neck is connected to the tail. The head is connected to the neck. The neck is between the tail and the head.

[0010] Further, the top is triangular in cross section.

[0011] Further, when the two rows of teeth are pulled together, the bases of the two intermeshing teeth engage each other, and the tops of the two intermeshing teeth abut each other.

[0012] Further, when the two rows of teeth are pulled together, the bases of the two intermeshing teeth engage each other, and the tops of the two intermeshing teeth abut each other.

[0013] Further, the height of the extension is h, and the thickness of the cloth strip is d, and 1 / 3 < h / d < 1 / 2.

[0014] Further, when the two rows of teeth are pulled together, the bases of the two intermeshing teeth engage each other, and the tops of the two intermeshing teeth abut each other.

[0015] With the above structure, the waterproof plastic zipper has the following technical effects: in the utility model, the extension and the cloth strip of the opposite chain belt abut each other to realize sealing between the teeth and the cloth strip in the state of two chain belts being pulled together, thereby realizing the waterproof effect, and the teeth and the cloth strip are both structures that are not easy to damage, so compared with the structure that uses a waterproof adhesive tape to abut the teeth to realize waterproofing of the tooth area, the structure is not easy to damage, and the use effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 Fig. 1 is a perspective view of the waterproof plastic zipper of the utility model;

[0017] Fig. 2 Fig. 2 is a perspective view of the tooth of the waterproof plastic zipper of the utility model;

[0018] Fig. 3 Fig. 3 is a sectional view of the tooth of the waterproof plastic zipper of the utility model;

[0019] In the figure: 1. chain belt, 2. cloth belt, 3. cloth strip, 4. tooth, 5. tail, 7. top, 8. neck, 9. head, 10. extension, h. height of the extension, d. thickness of the cloth strip, e. thickness of the extension, f. central cross section of the cloth strip. DETAILED DESCRIPTION

[0020] In order to further explain the technical scheme of the utility model, the utility model will be described in detail below through specific embodiments.

[0021] As Figs. 1-3The utility model provides an anti -water plastic zip fastener, including a pair of chain belt 1 and puller, a pair of chain belt 1 is opposite and is set, and the setting mode of a pair of chain belt 1 is same with conventional zip fastener, the puller has pull sheet, and the user is brought along the puller on a pair of chain belt 1 by pulling the pull sheet and is brought along the puller on a pair of chain belt 1 to slide to open or close a pair of chain belt 1.

[0022] Specifically, the chain belt 1 has a cloth tape 2, a cloth rod 3 and a row of teeth.

[0023] The cloth tape 2 has a front surface and a back surface. In general, the front surface is the side surface exposed outside when the utility model is installed on an article such as clothing or luggage, and the back surface is the side surface opposite to the front surface and hidden inside. At least the front surface of the cloth tape 2 is provided with a waterproof layer, which can be a waterproof adhesive layer or other common cloth tape waterproof structure used in conventional waterproof zip fasteners.

[0024] The cloth rod 3 is arranged on the side of the two cloth tapes 2 facing each other. The cloth rod 3 is a cloth rod commonly used in conventional plastic steel waterproof zip fasteners.

[0025] The row of teeth is arranged on the cloth rod 3. Specifically, the row of teeth is a row of teeth arranged by conventional plastic steel teeth. The row of teeth is injection molded on the cloth rod 3 by conventional injection molding. The row of teeth is pulled together under the action of the puller. The row of teeth includes a plurality of closely arranged teeth 4. The teeth 4 are arranged on the cloth rod 3 in the same way as conventional plastic steel zip fasteners, which are injection molded.

[0026] When the row of teeth is pulled together, the teeth 4 on one chain belt 1 are interlaced with the teeth 4 on the opposite chain belt 1. The teeth 4 have a tail 5 and a head connected to each other. The tail 5 is roughly square in shape and is formed on the cloth rod 3. The head extends towards the opposite chain belt 1. The head has a base and a top 7 arranged adjacent in the thickness direction. The base is located on the back surface of the cloth tape 2, and the top 7 is located on the front surface of the cloth tape 2.

[0027] The free end of the top 7 is arranged closer to the tail 5 than the free end of the base. Specifically, the top 7 is a straight column with a triangular cross section. The cross-sectional size of the top 7 gradually decreases from the tail to the head. The base has a neck 8 and a head 9. The width of the neck is smaller than the width of the head. The width direction of the neck and the width direction of the head refer to the sliding direction of the puller on the chain belt 1. The neck is connected to the tail 5. The head is connected to the neck. The neck is located between the tail 5 and the head.

[0028] When the two rows of fastener elements are pulled together, the bases of the two fastener elements 4 that are engaged with each other are engaged with each other, and the side surfaces of the top portions of the two fastener elements 4 are in close proximity to each other. Specifically, the head portion 9 of one fastener element 4 on one chain strip 1 is embedded in the space surrounded by the neck portions 8 of the two fastener elements 4 on the adjacent chain strip 1, and the top portion of one fastener element 4 on one chain strip 1 is located in the space surrounded by the top portions of the two fastener elements 4 on the adjacent chain strip 1. Since the top portion 7 is a straight column with a triangular cross section, the space surrounded by the top portions of the two fastener elements 4 on one chain strip 1 is also a columnar space with a triangular cross section. The triangular top portion 7 makes the gap between the adjacent fastener elements smaller when the two rows of fastener elements are pulled together, thereby achieving a certain degree of waterproofing.

[0029] The part of the base close to the top portion 7 is an extension 10, the height of the extension 10 is h, and the thickness of the reinforcing bar is d, and 1 / 3 < h / d < 1 / 2. When the two rows of fastener elements are pulled together, the extension 10 abuts against the reinforcing bar 3. Specifically, the free end of the extension 10 abuts against the reinforcing bar of the opposite chain strip 1, and the fastener element 4 after abutting against the reinforcing bar 3 is in close contact with the reinforcing bar 3. The central cross section e of the extension 10 is higher than the central cross section f of the reinforcing bar 3 that abuts against it, which can achieve a better waterproofing effect. Further, when the two rows of fastener elements are pulled together, the deformation depth of the extension 10 pressing the reinforcing bar of the opposite chain strip is greater than 0.1 mm. This setting can make the extension 10 better embedded in the reinforcing bar 3, reduce the gap between the free end of the extension 10 and the reinforcing bar 3, and further improve the waterproofing effect.

[0030] In addition, since the free end of the top portion 7 is arranged closer to the tail portion 5 than the free end of the base, when the two rows of fastener elements are pulled together, the free end of the top portion 7 is not in contact with the reinforcing bar of the opposite chain strip 1, but is arranged in a spaced manner. This makes the top portions of the two rows of fastener elements have a certain gap, and the two chain strips on which the two rows of fastener elements are arranged can be bent at a certain angle towards each other, which is more convenient to use while ensuring the waterproofing effect.

[0031] It is to be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate directions or positions based on the directions or positions shown in the drawings, and are merely used for the purpose of facilitating the description of the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation. In addition, the terms "first", "second", and the like are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features.

[0032] The above embodiments and drawings do not limit the product form and style of the utility model, and any appropriate changes or modifications made by ordinary skilled persons in the art shall be considered as not departing from the patent category of the utility model.

Claims

1. A waterproof plastic zipper, characterized in that: The device includes a pair of chains and a puller. The pair of chains are arranged opposite to each other. Each chain has a fabric strip, a fabric reinforcement, and a row of chain teeth. The fabric reinforcement is located on one side of the two fabric strips facing each other. The row of chain teeth is located on the fabric reinforcement. The row of chain teeth is pulled together by the puller. Each row of chain teeth includes multiple chain teeth. Each chain tooth has a tail and a head. The tail is formed on the fabric reinforcement. The head extends toward the opposite chain strip. The head has a base and a top arranged adjacent to each other in the thickness direction. The free end of the top is closer to the tail than the free end of the base. The portion of the base near the top is an extension. When the opposing rows of chain teeth are pulled together, the free end of the extension abuts against the fabric reinforcement of the opposite chain strip.

2. The waterproof plastic zipper as described in claim 1, characterized in that: The fabric strip has a surface and a back side, the surface being on the same side as the top and the back side being on the same side as the base.

3. A waterproof plastic zipper as described in claim 2, characterized in that: A waterproof layer is applied to the surface.

4. A waterproof plastic zipper as described in claim 3, characterized in that: The tail portion is formed on the waterproof layer.

5. A waterproof plastic zipper as described in claim 1, characterized in that: The base has a neck and a head, the neck being connected to the tail, the head being connected to the neck, and the neck being located between the tail and the head.

6. A waterproof plastic zipper as described in claim 1, characterized in that: The top has a triangular cross-section.

7. A waterproof plastic zipper as described in claim 1, characterized in that: When the chain teeth are engaged, the bases of the two meshing chain teeth interlock, and the tops of the two meshing chain teeth are closely abutted.

8. A waterproof plastic zipper as described in claim 1, characterized in that: When the opposing chain teeth are pulled together, the free end at the top is spaced apart from the reinforcing ribs of the opposite chain belt.

9. A waterproof plastic zipper as described in claim 1, characterized in that: The height of the extension is h, and the thickness of the reinforcing rib is d, where 1 / 3 < h / d < 1 / 2.

10. A waterproof plastic zipper as described in claim 1, characterized in that: When the corresponding chain teeth are pulled together, the deformation depth of the extension extruding the opposite fabric reinforcement is greater than 0.1 mm.

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