CN210841788U

CN210841788U - Waterproof airtight zip fastener

Info

Publication number: CN210841788U
Application number: CN201922157960.XU
Authority: CN
Inventors: 张茂灯
Original assignee: Dongguan Dengyou Zipper Accessories Co ltd
Current assignee: Dongguan Dengyou Zipper Accessories Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-06-26
Anticipated expiration: 2029-12-05

Abstract

A waterproof and airtight slide fastener comprising: two zipper tapes (1), zip fastener head (3) of a plurality of sprocket (2) and a plurality of sprocket (2) of closable, the upper surface and the lower surface of zipper tape (1) all are fixed with a plurality of sprocket (2) that are a row of mode align to grid, sprocket (2) have closure tooth head (21) and main part (22), closure tooth head (21) are located the inboard of main part (22), the inboard edge of zipper tape (1) is located between the closure tooth head (21) of its upper surface and lower surface, sprocket (2) still have positioning disk (23), positioning disk (23) are located the outside of main part (22), positioning disk (23) and zipper tape (1) form fixedly, and the width of positioning disk (23) is greater than or equal to half of the width of main part (22). The zipper can avoid the deviation of the zipper teeth, enhance the stability of the waterproof and airtight functions and prolong the service life of the whole body.

Description

Waterproof airtight zip fastener

Technical Field

The utility model belongs to the technical field of the zip fastener and specifically relates to a waterproof airtight zip fastener is related to.

Background

Slide fasteners are connecting members for joining or separating articles by means of continuously arranged fastener elements, and are widely used for clothing, bags, tents, and the like. In order to satisfy the waterproof and airtight functions of some products, some zippers are also designed to be waterproof and airtight.

Chinese patent CN205923155U discloses a zipper with high airtight and waterproof performance, which comprises a puller, zipper strips, a core part and zipper tooth rows, wherein the zipper tooth rows are respectively installed on the core part and are provided with a plurality of zipper teeth, each zipper tooth comprises an upper zipper tooth and a lower zipper tooth, and the engaging heads of the upper zipper tooth and the lower zipper tooth are respectively provided with a ramp; the core outer edge is located at the engagement head. This zip fastener not only can realize waterproof airtight function, and the problem that the sprocket easily drops does not have sprocket and zipper strip fixed connection moreover.

However, the zipper teeth of the zipper can be displaced after the zipper is used for a long time, especially when the zipper is subjected to high water pressure or air pressure, so that the waterproof and airtight functions are failed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses technical scheme is to above-mentioned condition, provides a waterproof airtight zip fastener in order to solve above-mentioned problem, the zip fastener includes: the zipper comprises two zipper tapes, a plurality of zipper teeth and a zipper head capable of closing the zipper teeth, wherein the zipper teeth which are uniformly arranged in a row are fixed on the upper surface and the lower surface of each zipper tape, the zipper teeth on the upper surface and the lower surface of each zipper tape are equal in number and are aligned with each other one by one, and the zipper head extends from the upper surface to the lower surface of each zipper tape; the zipper teeth are provided with closing tooth heads and a main body, the closing tooth heads are positioned on the inner side of the main body, and the inner side edge of the zipper tape is positioned between the closing tooth heads on the upper surface and the lower surface of the zipper tape; the zipper teeth are also provided with a positioning disc, the positioning disc is positioned on the outer side of the main body and is fixedly connected with the zipper tapes, and the width of the positioning disc is larger than or equal to half of the width of the main body.

Further, the positioning disc is semicircular.

Further, the main body is in the shape of a frustum of a pyramid, and the sectional area of the lower end of the main body is larger than that of the upper end of the main body.

Further, the upper surface of main part has positioning groove.

Furthermore, the number of the positioning grooves is two, and the two positioning grooves are respectively positioned on the left side and the right side of the main body.

Further, the zipper strips are formed of a TPU material.

Further, the zipper tape has a positioning through hole, and a positioning pin is protruded on the lower surface of the main body and inserted into the positioning through hole.

After the technical scheme is adopted, the utility model discloses an effect is: the zipper with the structure can not only realize the waterproof and airtight functions, but also avoid the deviation of the zipper teeth, enhance the stability of the waterproof and airtight functions and prolong the service life of the whole zipper.

Drawings

FIG. 1 is a schematic view of a slide fastener according to the present invention;

fig. 2 is a schematic view of a sprocket according to the present invention;

fig. 3 is a sectional view of the slide fastener according to the present invention.

Detailed Description

It is specifically noted that the terms "first", "second" and "third" in the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. All directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indicator is changed accordingly.

The technical solution of the present invention is further described below by way of examples:

the utility model provides a waterproof airtight zip fastener, as shown in figure 1, the zip fastener includes: two fastener tapes 1, a plurality of elements 2, and a slider 3 capable of closing the plurality of elements 2, the upper surface and the lower surface of the fastener tape 1 are fixed with a plurality of elements 2 uniformly arranged in a row, the elements 2 of the upper surface and the lower surface of the fastener tape 1 are equal in number and aligned with each other one by one, and the slider 3 extends from the upper surface to the lower surface of the fastener tape and contacts with the elements 2; as shown in fig. 2, the fastener element 2 has a closing element head 21 and a main body 22, the closing element head 21 being located inside the main body 22, and the inside edge of the fastener tape 1 being located between the closing element heads 21 of the upper and lower surfaces thereof. When the slide fastener is in a closed state, the inner sides of the two fastener tapes 1 are closely attached to each other, the elements 2 of the two fastener tapes 1 are staggered, and the closure elements 21 of the two fastener tapes 1 are engaged with each other. In the present invention, the sprocket 2 further has a positioning plate 23, the positioning plate 23 is located outside the main body 22, the positioning plate 23 is fixed to the fastener tape 1, and the width of the positioning plate 23 is greater than or equal to half of the width of the main body 22. The positioning disc 23 can increase the fixing strength between the zipper teeth 2 and the zipper tape 1, can resist the stress generated when the zipper is closed and opened, and avoids the situation that the zipper teeth 2 are displaced. In addition, because the width of positioning plate 23 is greater than or equal to half of the width of main body 22, can guarantee to have better reinforcing effect to the left and right sides of adding sprocket 2.

Specifically, with continued reference to FIG. 2, the puck 23 is semi-circular. For the semicircular positioning plates 23, the outer side distance between two adjacent positioning plates 23 is larger, so that the interference caused by the two adjacent positioning plates 23 when the zipper teeth 2 are welded is avoided.

Specifically, the body 22 has a truncated pyramid shape, and the sectional area of the lower end of the body 22 is larger than that of the upper end. The size of the lower end of the main body 22 is large, so that the fixing strength between the main body 22 and the zipper tape 1 can be guaranteed, the size of the upper end of the main body 22 is small, the distance between two adjacent main bodies 22 is large, and the interference caused by the two adjacent main bodies 22 when the zipper teeth 2 are welded can be avoided.

More specifically, the upper surface of the body 22 has a positioning groove 24. When the zipper head is welded, the positioning groove 24 can be matched with a pressure rod of a welding machine to realize accurate positioning, and the failure of the waterproof and airtight functions caused by incorrect positions of the zipper teeth 2 is avoided.

More specifically, the positioning grooves 24 are two, and the two positioning grooves 24 are located on the left and right sides of the main body 22, respectively. The positioning grooves 24 on the left and right sides of the main body 22 may provide a more precise positioning effect.

Specifically, the fastener tape 1 is formed of a TPU material (i.e., thermoplastic polyurethane elastomer rubber). The TPU material has wide hardness range, high mechanical strength, good elasticity and wear resistance, and can ensure that the zipper has good waterproof and airtight functions.

Specifically, with continued reference to fig. 3, the fastener tape 1 has a positioning through hole 11, and a positioning pin 25 is projected from the lower surface of the main body 22, the positioning pin 25 being inserted into the positioning through hole 11. Through the cooperation of locating pin 25 and positioning hole 11, can further strengthen the fixed effect between zipper strip 1 and sprocket 2, avoid sprocket 2 to take place the skew.

Therefore, the zipper with the structure can not only realize the waterproof and airtight functions, but also avoid the deviation of the zipper teeth, enhance the stability of the waterproof and airtight functions and prolong the service life of the whole zipper.

The above-mentioned embodiments are merely preferred examples of the present invention, and do not limit the scope of the present invention, so all equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.

Claims

1. A water-tight, air-tight zipper, comprising: the zipper comprises two zipper tapes (1), a plurality of zipper teeth (2) and a zipper head (3) capable of closing the zipper teeth (2), wherein the upper surface and the lower surface of each zipper tape (1) are fixedly provided with a plurality of zipper teeth (2) which are uniformly arranged in a row, the zipper teeth (2) on the upper surface and the lower surface of each zipper tape (1) are equal in number and are aligned with each other one by one, and the zipper head (3) extends from the upper surface to the lower surface of each zipper tape; the zipper teeth (2) are provided with closing tooth heads (21) and main bodies (22), the closing tooth heads (21) are positioned on the inner side of the main bodies (22), and the inner side edges of the zipper tapes (1) are positioned between the closing tooth heads (21) on the upper surface and the lower surface; the method is characterized in that: the zipper teeth (2) are also provided with a positioning disc (23), the positioning disc (23) is positioned on the outer side of the main body (22), the positioning disc (23) is fixedly formed with the zipper tape (1), and the width of the positioning disc (23) is larger than or equal to half of the width of the main body (22).

2. The waterproof and airtight zipper of claim 1, wherein: the positioning disc (23) is semicircular.

3. The waterproof and airtight zipper of claim 1, wherein: the main body (22) is in a frustum pyramid shape, and the sectional area of the lower end of the main body (22) is larger than that of the upper end.

4. The waterproof and airtight slide fastener according to claim 1 or 3, wherein: the upper surface of the main body (22) is provided with a positioning groove (24).

5. The waterproof and airtight zipper of claim 4, wherein: the number of the positioning grooves (24) is two, and the two positioning grooves (24) are respectively positioned on the left side and the right side of the main body (22).

6. The waterproof and airtight zipper of claim 1, wherein: the zipper tape (1) is formed of TPU material.

7. The waterproof and airtight zipper of claim 1, wherein: the zipper tape (1) is provided with a positioning through hole (11), a positioning pin (25) protrudes from the lower surface of the main body (22), and the positioning pin (25) is inserted into the positioning through hole (11).