Plastic steel waterproof zipper

Abstract

The plastic steel waterproof zipper 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 use effect.

Description

Technical Field

[0001] The present invention relates to zipper technology, and particularly to a plastic-steel waterproof zipper. Background Art

[0002] A waterproof adhesive zipper is a zipper product with a combined waterproof function, mainly used in scenarios that require waterproofing such as outdoor equipment and waterproof bags. Its advantages include: excellent waterproof performance, effectively preventing water penetration through the adhesive process; high durability, capable of withstanding frequent opening and closing and harsh environments; lightweight and flexible, not affecting the portability of the overall product. However, it also has some disadvantages: Most waterproof zippers on the market achieve sealing at the teeth by setting waterproof rubber strips above the teeth and squeezing the waterproof rubber strips against each other. When zipping up the zipper, the opening and closing feel is relatively hard and may not be as smooth as that of an ordinary zipper; and once the waterproof rubber strip is damaged, its waterproof performance will be greatly reduced, resulting in poor use effects. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a waterproof plastic zipper with better use effects.

[0004] To achieve the above purpose, the solution of the present invention is as follows: A plastic-steel waterproof zipper includes a pair of chain tapes and a slider. The pair of chain tapes are arranged opposite to each other. Each chain tape has a fabric tape, a fabric rib, and a row of teeth. The fabric rib is arranged on the side where the two fabric tapes face each other. The row of teeth is arranged on the fabric rib. The rows of teeth are pulled together under the action of the slider. The row of teeth includes a plurality of teeth. Each tooth has a tail and a head. The tail is formed on the fabric rib, and the head extends towards the direction of the opposite chain tape. The head has a base and a top that are 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. Let the sliding direction of the slider on the row of teeth be the width direction of the tooth. The top has wing portions that extend out of the base on both sides in the width direction. A groove is concavely provided on the side surface of the wing portion facing the base. 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 the abutting top. When the opposite rows of teeth are pulled together, the free end of the abutting top abuts against the fabric rib of the opposite chain tape. The rib of one tooth cooperates with the bases of the two teeth that mesh with it.

[0005] Further, the base has a neck and a head. The neck is connected to the tail, and the head is connected to the neck. The neck is located between the tail and the head.

[0006] Further, when the opposite sets of chain teeth are pulled together, the head of one chain tooth is embedded in the space enclosed by the necks of the two chain teeth it meshes with, and the convex strip cooperates with the heads of the two chain teeth it meshes with.

[0007] Further, 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.

[0008] Further, the convex strips are located on both sides in the width direction of the neck.

[0009] Further, the maximum height of the convex 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.

[0010] Further, the distance between the maximum height of the convex 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.

[0011] Further, the convex strip is a square-shaped convex strip.

[0012] Further, the convex strip is a semi-cylindrical convex strip.

[0013] Further, the convex strip is arranged close to the width direction edge of the top.

[0014] After adopting the above structure, a plastic-steel waterproof zipper proposed by the present invention has the following technical effects: In the present invention, 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 realized 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 conventionally 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 invention is provided with convex strips on the side wing part that are in contact and cooperate with the chain tooth bases that are meshed, 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

[0015] Figure 1 is a three-dimensional structural schematic diagram of a plastic-steel waterproof zipper of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the chain teeth of a plastic-steel waterproof zipper of the present invention; Figure 3 is a bottom view structural schematic diagram of the chain teeth of a plastic-steel waterproof zipper of the present invention; Figure 4 is a side view structural schematic diagram of the chain teeth of a plastic-steel waterproof zipper of the present invention; Figure 5 isFigure 4 Schematic enlarged structure diagram at position A in the middle Figure 6 Cross-sectional structure diagram of the teeth of a plastic-steel waterproof zipper according to the present invention In the figure: 1. Chain tape, 2. Cloth tape, 3. Cloth reinforcement, 4. Teeth, 5. Tail part, 6. Flank part, 7. Top part, 8. Neck part, 9. Head part, 10. Against the top part, 11. Rib, 12. Groove, a. Maximum height of the rib in the thickness direction of the teeth, b. Depth of the groove, c. Spacing between the maximum height of the rib and the end face of the head part facing the flank part, d. Thickness of the cloth reinforcement, e. Central cross-section of the thickness of the extension part, f. Central cross-section of the cloth reinforcement, h. Height of the against the top part Specific embodiments

[0016] In order to further explain the technical solution of the present invention, the present invention will be elaborated in detail below through specific embodiments

[0017] As Figures 1-6 A plastic-steel waterproof zipper shown in the figure includes a pair of chain tapes 1 and a slider. The pair of chain tapes 1 are arranged opposite to each other, and the arrangement mode of the pair of chain tapes 1 is the same as that of a conventional zipper. The slider has a pull tab, and the user drives the slider to slide on the pair of chain tapes 1 by pulling the pull tab, thereby closing or opening the pair of chain tapes 1

[0018] Specifically, the chain tape 1 has a cloth tape 2, a cloth reinforcement 3 and a row of teeth

[0019] The cloth tape 2 has a front surface and a back surface. Generally, the front surface is the side surface of the cloth tape 2 that is exposed when the plastic-steel waterproof zipper of the present invention is installed on an article such as clothing or a luggage case, and the back surface is opposite to the front surface and is the side surface hidden inside. At least the front surface of the cloth tape 2 is provided with a waterproof layer, and the waterproof layer can be a pasted waterproof adhesive layer or other cloth tape waterproof structures commonly used in conventional waterproof zippers

[0020] The cloth reinforcement 3 is arranged on one side of the two cloth tapes 2 facing each other, and the cloth reinforcement 3 is the cloth reinforcement used in a conventional plastic-steel waterproof zipper

[0021] The row of teeth is arranged on the cloth reinforcement 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 reinforcement 3 by a conventional injection molding method. The row of teeth are mutually closed under the action of the slider. The row of teeth includes a plurality of teeth 4 arranged closely side by side. The teeth 4 are arranged on the cloth reinforcement 3 in the same way as a conventional plastic-steel zipper, all by injection molding

[0022] When the above-mentioned chain teeth are zipped together, the chain teeth 4 on one chain tape 1 are meshed with the chain teeth 4 on the opposite chain tape 1 in an alternating manner. Let the sliding direction of the slider on the chain teeth be the width direction of the chain teeth 4. The chain teeth 4 have a tail 5 and a head that are connected to each other. The tail 5 is generally square-shaped and is formed on the cloth rib 3. The head extends towards the opposite chain tape 1. The head has a base and a top 7 that are adjacent in the thickness direction. The base is located on the back side of the cloth tape 2, and the top 7 is located on the surface side of the cloth tape 2.

[0023] The free end of the top 7 is 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 dimensions of the top 7 gradually decrease in the direction from the tail to the head, and the width of the top 7 tapers in the direction from the tail to the head. The top has flank portions 6 that extend out of the base on both sides in the width direction. The number of flank portions 6 is two. Each flank portion 6 is recessed with a groove 12 on the side facing the base. A rib 11 protrudes from the groove 12. The end of the rib 11 does not extend out of the groove 12, that is, the end of the rib 11 does not protrude above the groove 12. The rib 11 is spaced from the base. The rib 11 is square-shaped or semi-cylindrical and is arranged close to the width direction edge of the top 7.

[0024] 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 directions of both the neck and the head refer to the sliding direction of the zipper slider on the chain tape 1. The neck 8 is connected to the tail 5, and the head 9 is connected to the neck 8. The neck 8 is located between the tail 5 and the head 9.

[0025] The sides of the tops of two chain teeth 4 are closely adjacent to each other. Specifically, the head 9 of a chain tooth 4 on one chain tape 1 is embedded in the space enclosed by the necks 8 of two adjacent chain teeth 4 on the other chain tape. At this time, the top of a chain tooth 4 on one chain tape 1 is located in the space enclosed by the tops of two adjacent chain teeth 4 on the other chain tape. Since the top 7 is a straight column with a triangular cross-section, the cross-sectional space enclosed by the tops of two adjacent chain teeth 4 on one chain tape 1 is also a columnar space with a triangular cross-section. The top 7 with a triangular cross-section makes the gap between adjacent chain teeth smaller when the chain teeth are zipped together, thereby achieving a certain degree of waterproofing.

[0026] Further, the maximum height of the rib 11 in the thickness direction of the tooth 4 is a, where 0.15 mm < a < 0.2 mm, the depth of the groove 12 is b, where 0.2 mm < b < 0.4 mm, and the distance between the maximum height of the rib 11 and the end face of the head 9 facing the side wing portion is c, where c ≤ 0.05 mm. The setting of these dimensional parameters enables better cooperation between the head 9 and the side wing portion when the two meshing rows of teeth are pulled together or opened. Specifically, the rib 11 is located on both sides in the width direction of the neck 8, and there is a gap between the rib 11 and the neck 8. The functions of this design are as follows: During the meshing process of two teeth 4, the side wing portion 6 of one tooth 4 and the base of the other tooth 4, specifically the head 9 of the base, are in frictional contact. If the gap between the rib 11 and the neck 8 is filled, that is, the groove 12 where the rib is located is filled, the contact area between the head 9 and the side wing portion 6 will increase, thereby increasing the resistance during meshing and affecting the feel of pulling together the two chain tapes 1. If the rib 11 is not provided, the thickness of the side wing portion 6 at the groove 12 will decrease, and the biting strength of the two teeth 4 in the direction perpendicular to the chain tape 1 after meshing will decrease, resulting in the teeth 4 moving in the direction perpendicular to the chain tape 1, thereby increasing the gap between the meshing teeth 4 and affecting the waterproof effect of the entire zipper.

[0027] The part of the base near the top 7 is the abutting top 10, the height of the abutting top 10 is h, and the thickness of the cloth reinforcement is d, where 1 / 3 < h / d < 1 / 2. When the two opposite rows of the above-mentioned teeth are pulled together, the abutting top 10 abuts against the cloth reinforcement 3. Specifically, the free end of the abutting top 10 faces the cloth reinforcement 3 of the opposite chain tape 1 and abuts against it. After abutting, the tooth 4 is in close contact with the cloth reinforcement 3. The central cross-section of the thickness of the abutting top 10 is higher than the central height cross-section of the cloth reinforcement 3 with which it abuts, which can achieve a better waterproof effect. Further, when the opposite rows of teeth are pulled together, the deformation depth generated by the abutting top 10 squeezing the cloth reinforcement of the opposite chain tape is greater than 0.1 mm. This setting enables the abutting top 10 to be better embedded in the cloth reinforcement 3, reducing the gap between the free end of the abutting top 10 and the cloth reinforcement 3 and further improving the waterproof effect.

[0028] In addition, since the free end of the top 7 is closer to the tail 5 than the free end of the base, when the two opposite rows of the above-mentioned teeth are pulled together, the free end of the top 7 does not contact the cloth reinforcement of the opposite chain tape 1, and they are spaced apart. This allows a certain gap to exist at the tops of the two rows of teeth, and the two chain tapes where the two rows of teeth are located can be bent towards each other at a certain angle, which is more convenient to use while ensuring the waterproof effect.

[0029] It should be noted here that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing these embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0030] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present invention.

Claims

1. A plastic-steel waterproof zipper, characterized in that: It includes a pair of chain tapes and a slider. The pair of chain tapes are arranged oppositely. Each chain tape has a fabric tape, a fabric rib, and a row of chain teeth. The fabric rib is disposed on the side where the two fabric tapes face each other. The row of chain teeth is disposed on the fabric rib. The chain teeth are pulled together under the action of the slider. The row of chain teeth includes a plurality of chain teeth. Each chain tooth has a tail and a head. The tail is formed on the fabric rib. The head extends towards the direction of the opposite chain tape. The head has a base and a top that 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 portions that extend out of the base on both sides in the width direction. A groove is concavely provided on the side surface of the wing portion facing the base. 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 pulled together, the free end of the contact top abuts against the fabric rib of the opposite chain tape. The rib of one chain tooth cooperates with the bases of two chain teeth that mesh with it.

2. A plastic-steel waterproof zipper as claimed 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. A plastic-steel waterproof zipper as claimed in claim 2, characterized in that: When the opposite rows of chain teeth are pulled together, the head of one chain tooth is embedded in the space surrounded by the necks of two chain teeth that mesh with it. The rib cooperates with the heads of two chain teeth that mesh with it.

4. The plastic-steel waterproof zipper according to 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 plastic-steel waterproof zipper as claimed in claim 2, characterized in that: The rib is located on both sides in the width direction of the neck.

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

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

8. The plastic-steel waterproof zipper according to claim 6, characterized in that: The rib is a square-shaped rib.

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

10. The plastic-steel waterproof zipper according to claim 1, characterized in that: The rib is provided close to the width direction edge of the top.

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