Plastic steel waterproof zipper

Abstract

The utility model discloses a plastic steel waterproof 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 a cloth belt, a cloth rib and a zipper tooth row, each zipper tooth row comprises a plurality of zipper teeth, each zipper tooth is provided with a tail portion and a head portion, the tail portions are formed on the cloth ribs, and the head portions extend towards the opposite zipper belts. The head is provided with a base and a top which are adjacently arranged in the thickness direction, the free end of the top is closer to the tail than the free end of the base, the top is provided with a side wing part, a groove is formed in the side face, facing the base, of the side wing part in a concave mode, a protruding strip is arranged in the groove in a protruding mode, and the protruding strip and the base are arranged in a spaced mode. When the opposite zipper tooth rows are mutually closed, the free ends of the abutting parts abut against the cloth ribs of the opposite zipper belts, the protruding strips of one zipper tooth are matched with the bases of the two zipper teeth meshed with the protruding strips, and the zipper tooth has the advantage of being better in using effect.

Description

TECHNICAL FIELD

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

[0002] The waterproof zipper is a kind of zipper product with waterproof function, mainly used in outdoor equipment, waterproof bag and other scenes needing waterproof. Its advantages include: excellent waterproof performance, effectively prevent moisture penetration through the glue process;Strong durability, can withstand frequent opening and closing and harsh environment;Light and flexible, does not affect the portability of the overall product. However, it also has some shortcomings: most of the waterproof zippers on the market set waterproof rubber strips above the teeth, and the sealing of the teeth is realized by the mutual extrusion of the waterproof rubber strips. When the zipper is pulled together, the opening and closing feel hard, and it may not be as smooth as ordinary zippers. Moreover, once the waterproof rubber strip is damaged, its waterproof performance will be greatly reduced, and the use effect is poor. SUMMARY

[0003] Therefore, the utility model aims at providing a waterproof plastic zipper with good use effect.

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

[0005] A plastic steel waterproof zipper 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 under the action of 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 sliding direction of the puller on the tooth row is the width direction of the teeth. The top has a wing part extending out of the base on both sides in the width direction. The wing part is concave on the side facing the base. A convex strip is protruded in the concave. The convex strip does not extend out of the concave. The convex strip is arranged separately from the base. The part of the base close to the top is a top abutting part. When the opposite tooth rows are pulled together, the free end of the top abutting part abuts with the cloth bar of the opposite chain belt. The convex strip of one tooth cooperates with the base of two teeth engaged with it.

[0006] Further, the base has a neck and a head. The neck is connected with the tail. The head is connected with the neck. The neck is located between the tail and the head.

[0007] Furthermore, when the opposite rows of chain teeth are pulled together, the head of one chain tooth is embedded in the space formed by the necks of the two chain teeth with which it meshes, and the protruding strip cooperates with the heads of the two chain teeth with which it meshes.

[0008] Furthermore, the cross-section of the top is triangular, and the width of the top tapers in the direction from the tooth tail to the tooth head.

[0009] Furthermore, the protruding strips are located on both sides in the width direction of the neck.

[0010] Furthermore, the maximum height of the protruding strip in the thickness direction of the chain tooth is a, where 0.15 mm < a < 0.2 mm, and the depth of the groove is b, where 0.2 mm < b < 0.4 mm.

[0011] Furthermore, the distance between the maximum height of the protruding strip and the end face of the head facing the side wing part is c, and c is less than or equal to 0.05 mm.

[0012] Furthermore, the protruding strip is a square-shaped protruding strip.

[0013] Furthermore, the protruding strip is a semi-cylindrical protruding strip.

[0014] Furthermore, the protruding strip is arranged close to the width direction edge of the top.

[0015] After adopting the above structure, a plastic-steel waterproof zipper proposed by the present utility model has the following technical effects: In the present utility model, by using the abutting top to abut against the cloth ribs of the opposite chain tapes, the sealing between the chain teeth and the cloth ribs is achieved in the state where the two chain tapes are pulled together to achieve the waterproof effect, and both the chain teeth and the cloth ribs are structures that are not easily damaged. Therefore, compared with the structure that uses a waterproof rubber strip to abut to achieve waterproofing in the chain tooth area, it is not easily damaged. At the same time, in order to ensure a smooth hand feeling during pulling, the present utility model is provided with protruding strips on the side wing parts that are in contact and cooperate with the meshing chain tooth bases, which can reduce the resistance during pulling. While ensuring the waterproof performance of the zipper, the pulling hand feeling is lighter and the use effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of a plastic-steel waterproof zipper of the present utility model;

[0017] <9000039>is a three-dimensional structural schematic diagram of the chain teeth of a plastic-steel waterproof zipper of the present utility model;

[0018] Figure 3 is a bottom view structural schematic diagram of the chain teeth of a plastic-steel waterproof zipper of the present utility model;

[0019] Figure 4A side view structure schematic diagram of a chain element of the plastic steel waterproof zipper;

[0020] Figure 5 For Figure 4 An enlarged structure schematic diagram of A in the middle;

[0021] Figure 6 A cross-sectional structure schematic diagram of a chain element of the plastic steel waterproof zipper;

[0022] In the figure: 1. chain belt, 2. cloth belt, 3. cloth tendon, 4. chain element, 5. tail, 6. side wing part, 7. top, 8. neck, 9. head, 10. abutting top, 11. convex strip, 12. groove, a. the maximum height of the convex strip in the thickness direction of the chain element, b. the depth of the groove, c. the distance between the maximum height of the convex strip and the end face of the head towards the side wing part, d. the thickness of the cloth tendon, e. the thickness of the central cross section of the extension part, f. the central cross section of the cloth tendon, h. the height of the abutting top. DETAILED DESCRIPTION

[0023] In order to further explain the technical scheme of the utility model, the utility model will be described in detail below through specific embodiments.

[0024] As Figures 1-6 indicated, a plastic steel waterproof zipper comprises a pair of chain belts 1 and a puller, the pair of chain belts 1 are oppositely arranged, the arrangement mode of the pair of chain belts 1 is the same as that of a conventional zipper, and the puller is provided with a pull tab, and a user drives the puller to slide on the pair of chain belts 1 by pulling the pull tab, so that the pair of chain belts 1 are pulled together or opened.

[0025] Specifically, the chain belt 1 is provided with a cloth belt 2, a cloth tendon 3 and a chain element row.

[0026] The cloth belt 2 is provided with a surface and a back surface, in general, the surface is the side surface of the cloth belt 2 exposed outside when the utility model is installed on an article such as clothes or a bag, and the back surface is the side surface opposite to the front surface and hidden inside, at least the surface of the cloth belt 2 is provided with a waterproof layer, which can be a waterproof adhesive layer or other common waterproof structure of a cloth belt of a conventional waterproof zipper.

[0027] The cloth tendon 3 is arranged on the side of the two cloth belts 2 facing each other, and the cloth tendon 3 is a cloth tendon used in a conventional plastic steel waterproof zipper.

[0028] The chain element row is arranged on the cloth tendon 3, and specifically, the chain element row is a chain element row arranged by conventional plastic steel chain elements, the chain element row is injection molded on the cloth tendon 3 in a conventional injection molding mode, the chain element row is pulled together under the action of the puller, and the chain element row comprises a plurality of chain elements 4 arranged closely side by side, and the chain elements 4 are arranged on the cloth tendon 3 in the same way as a conventional plastic steel zipper, that is, by injection molding.

[0029] When the above chain tooth rows are pulled together, the chain teeth 4 on one chain strip 1 are interlocked with the chain teeth 4 on the opposite chain strip 1, and the sliding direction of the puller on the chain tooth row is the width direction of the chain teeth 4. The chain teeth 4 have a tail part 5 and a head part connected to each other. The tail part 5 is substantially square-shaped, and is formed on the cloth strip 3. The head part extends towards the direction of the opposite chain strip 1, and has a base and a top part 7 arranged adjacent in the thickness direction. The base is located on the back side of the cloth strip 2, and the top part 7 is located on the surface side of the cloth strip 2.

[0030] The free end of the top part 7 is arranged closer to the tail part 5 than the free end of the base. Specifically, the top part 7 is a straight column with a triangular cross section, and the cross-sectional size of the top part 7 gradually decreases from the tail part to the head part. The width of the top part 7 gradually decreases from the tail part to the head part. The top part has a wing part 6 extending out of the base on both sides in the width direction. The number of wing parts 6 is two. Each wing part 6 is recessed with a groove 12 on the side surface towards the base. A protruding strip 11 is protruded in the groove 12. The end of the protruding strip 11 does not extend out of the groove 12, i.e. the end of the protruding strip 11 does not protrude above the groove 12. The protruding strip 11 is arranged spaced apart from the base. The protruding strip 11 is square-shaped or semi-cylindrical, and is arranged close to the width direction edge of the top part 7.

[0031] The base has a neck part 8 and a head part 9. The width of the neck part is smaller than the width of the head part. The width direction of the neck part and the width direction of the head part both refer to the sliding direction of the puller on the chain strip 1. The neck part 8 is connected to the tail part 5, and the head part 9 is connected to the neck part 8. The neck part 8 is located between the tail part 5 and the head part 9.

[0032] The side surfaces of the top parts of the two chain teeth 4 are arranged close to each other. Specifically, the head part 9 of one chain tooth 4 on one chain strip 1 is embedded in the space surrounded by the neck parts 8 of the two chain teeth 4 adjacent to each other on the other chain strip 1. At this time, the top part of one chain tooth 4 on one chain strip 1 is located in the space surrounded by the top parts of the two chain teeth 4 adjacent to each other on the other chain strip 1. Since the top part 7 is a straight column with a triangular cross section, the space cross section surrounded by the top parts of the two adjacent chain teeth 4 on one chain strip 1 is also a columnar space with a triangular cross section. The triangular cross section of the top part 7 makes the gap between the adjacent chain teeth smaller when the chain tooth rows are pulled together, thereby achieving a certain degree of waterproofness.

[0033] Further, the maximum height of the convex strip 11 in the thickness direction of the fastener element 4 is a, 0.15mm < a < 0.2mm, the depth of the groove 12 is b, 0.2mm < b < 0.4mm, and the distance between the maximum height of the convex strip 11 and the end surface of the side wing part 6 on the side of the head part 9 is c, c is less than or equal to 0.05mm. The setting of the size parameter can make the two fastener element rows engaged or opened, and the head part 9 and the side wing part can better cooperate. Specifically, the convex strip 11 is located on both sides of the neck part 8 in the width direction, and there is a gap between the convex strip 11 and the neck part 8, that is, there is a gap between the convex strip 11 and the neck part 8. The effect of the design is as follows: during the mutual engagement of the two fastener elements 4, the side wing part 6 of one fastener element 4 and the base of the other fastener element 4, specifically the head part 9 of the base, are in frictional contact with each other. If the gap between the convex strip 11 and the neck part 8 is filled, that is, the groove 12 where the convex strip is located is filled, the contact area of the head part 9 and the side wing part 6 will increase, thereby increasing the resistance during engagement, affecting the hand feeling of the two fastener element rows, and if the convex strip 11 is not set, the thickness of the side wing part 6 at the groove 12 will decrease, and the engagement strength of the two fastener elements 4 in the direction perpendicular to the fastener tape 1 will decrease, causing the fastener elements 4 to move in the direction perpendicular to the fastener tape 1, thereby increasing the gap between the mutually engaged fastener elements 4, thereby affecting the waterproof effect of the entire fastener.

[0034] The part of the base close to the top part 7 is the abutting top part 10, the height of the abutting top part 10 is h, and the thickness of the cloth reinforcing part is d, 1 / 3 < h / d < 1 / 2. When the two opposite fastener element rows are pulled together, the abutting top part 10 is in abutment with the cloth reinforcing part 3. Specifically, the free end of the abutting top part 10 is in abutment with the cloth reinforcing part 3 of the opposite fastener tape 1, and the fastener element 4 after abutment is in close contact with the cloth reinforcing part 3. The thickness of the central cross section of the abutting top part 10 is higher than the central height cross section of the cloth reinforcing part 3 in abutment therewith, which can achieve better waterproof effect. Further, when the two opposite fastener element rows are pulled together, the deformation depth of the abutting top part 10 extruding the cloth reinforcing part of the opposite fastener tape is greater than 0.1mm. This setting can make the abutting top part 10 better embedded in the cloth reinforcing part 3, reduce the gap between the free end of the abutting top part 10 and the cloth reinforcing part 3, and further improve the waterproof effect.

[0035] In addition, since the free end of the top part 7 is closer to the tail part 5 than the free end of the base, when the two opposite fastener element rows are pulled together, the free end of the top part 7 is not in contact with the cloth reinforcing part of the opposite fastener tape 1, but is spaced apart. In this way, there is a certain gap between the top parts of the two fastener element rows, and the two fastener tapes on which the two fastener element rows are located can be bent at a certain angle towards each other, which is more convenient to use while ensuring waterproof effect.

[0036] 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.

[0037] 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 technical personnel in the art shall be considered as not departing from the patent category of the utility model.

Claims

1. A waterproof plastic-steel zipper, characterized in that: It includes a pair of chain tapes and a slider. The pair of chain tapes are arranged oppositely. The chain tape has a cloth tape, a cloth rib and a row of chain teeth. The cloth rib is arranged on the side where the two cloth tapes face each other. The row of chain teeth is arranged on the cloth rib. The row of chain teeth are mutually zipped under the action of the slider. The row of chain teeth includes multiple chain teeth. Each chain tooth has a tail and a head. The tail is formed on the cloth rib. The head extends towards the direction of the opposite chain tape. The head has a base and a top which are adjacent in the thickness direction. The free end of the top is closer to the tail than the free end of the base. Let the sliding direction of the slider on the row of chain teeth be the width direction of the chain tooth. The top has wing parts extending out of the base on both sides in the width direction. The side surface of the wing part facing the base is concave with a groove. A rib is convexly provided in the groove. The rib does not extend out of the groove. The rib is spaced from the base. The part of the base close to the top is a contact top. When the opposite rows of chain teeth are mutually zipped, the free end of the contact top abuts against the cloth rib of the opposite chain tape. The rib of one chain tooth cooperates with the bases of two chain teeth meshed with it.

2. The waterproof plastic steel zipper as described in claim 1, characterized in that: 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 located between the tail and the head.

3. The waterproof plastic steel zipper as described in claim 2, characterized in that: When the opposite rows of chain teeth are mutually zipped, the head of one chain tooth is embedded in the space surrounded by the necks of two chain teeth meshed with it. The rib cooperates with the heads of two chain teeth meshed with it.

4. The waterproof plastic steel zipper as described in claim 1, characterized in that: The cross-section of the top is triangular. The width of the top tapers in the direction from the tooth tail to the tooth head.

5. A waterproof plastic steel zipper as described in claim 2, characterized in that: The rib is located on both sides in the width direction of the neck.

6. A waterproof plastic steel zipper as described in claim 2, characterized in that: The maximum height of the rib in the thickness direction of the chain tooth is a, 0.15mm < a < 0.2mm, and the depth of the groove is b, 0.2mm < b < 0.4mm.

7. A waterproof plastic steel zipper as described in claim 2, characterized in that: The distance between the maximum height of the rib and the end face of the head towards the wing part side is c, and c is less than or equal to 0.05mm.

8. A waterproof plastic steel zipper as described in claim 6, characterized in that: The rib is a square rib.

9. A waterproof plastic steel zipper as described in claim 6, characterized in that: The rib is a semi-cylindrical rib.

10. A waterproof plastic steel zipper as described in claim 1, characterized in that: The rib is arranged close to the width direction edge of the top.

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