Double-side single-layer and double-layer T-shaped telescopic enclosing zipper

Abstract

The utility model discloses a double-side single-layer and double-layer T-shaped telescopic enclosing zipper which comprises a left zipper belt, a right zipper belt, a left zipper strip and a right zipper strip. The right zipper belt is provided with first right zipper teeth; the middle zipper belt is provided with second left zipper teeth and second right zipper teeth; the left zipper head is used for opening and closing connection of the first left zipper teeth and the second left zipper teeth; the right zipper head is used for opening and closing connection of the first right zipper teeth; and the edge of one side of the telescopic shroud ring is fixed in the middle of the middle chain belt to form a T-shaped belt structure. According to the double-side T-shaped zipper disclosed by the utility model, an integrated sewing process can be adopted in a box manufacturing process, so that the complexity of production steps and procedures is obviously reduced, the tedious process caused by separate sewing of a traditional double-row zipper is avoided, and the production efficiency is improved. The two groups of zipper teeth can be single-layer or double-layer, the single-layer zipper teeth are low in cost, and the double-layer zipper teeth are good in safety; in addition, the telescopic shroud ring is selected to be sewn with the left zipper belt and the right zipper belt which are different in width, two different telescopic widths can be formed, and the zipper is suitable for being applied to different products.

Description

Technical Field

[0001] The utility model relates to the technical field of zippers and bags, and in particular to a double-sided single-layer or double-layer T-shaped telescopic zipper. Background Art

[0002] The invention of the zipper has a long history. It has completely changed the way traditional two-piece parts are opened and closed. It is easy to operate and highly safe. Therefore, most garments, handbags and related products use zippers as the main fastening solution.

[0003] In existing technology, the most common type of zipper is the single-row zipper. With the continuous expansion of zipper applications, especially in space-efficient products like luggage, double-row zipper designs have emerged. This double-row zipper layout provides more flexible storage within the limited space of luggage: one row of zippers is typically used to store retractable enclosures, while the other row is used to open the luggage.

[0004] While double-row zippers offer functional convenience, their production process presents numerous challenges. Traditional double-row zipper designs require the two rows of zippers to be sewn separately during the luggage manufacturing process, complicating the process and potentially requiring the addition of a separate production line, increasing production costs. This not only impacts production efficiency but also reduces product competitiveness. Therefore, further innovation is needed in the design and production of double-row zippers to optimize the production process. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the existing double-row zippers, the utility model provides a double-sided single-layer and double-layer T-shaped telescopic zipper.

[0006] The technical solution adopted by the present invention is as follows: a double-sided single-layer, double-layer T-shaped telescopic zipper, comprising: a left link belt, a first left link tooth is provided on one side edge; a right link belt, a first right link tooth is provided on one side edge; a middle link belt, a second left link tooth and a second right link tooth are provided on both side edges respectively; a left link head, used for the opening and closing connection of the first left link tooth and the second left link tooth; a right link head, used for the opening and closing connection of the first right link tooth; a telescopic belt, one side edge of which is fixed to the middle of the middle link belt to form a T-shaped belt structure.

[0007] Preferably, the first left link tooth, the second left link tooth, and the first right link tooth are all single-layer zipper teeth.

[0008] Preferably, the first left link tooth, the second left link tooth, and the first right link tooth are all double-layer zipper teeth.

[0009] Preferably, one group of the first left link tooth, the second left link tooth, and the first right link tooth is a single-layer zipper tooth, and the other group is a double-layer zipper tooth.

[0010] Preferably, the left chain belt and the right chain belt have different widths.

[0011] The utility model has the following beneficial effects:

[0012] 1. Simplified process: Double-sided T-shaped zippers enable the use of an integrated sewing process in the box making process, significantly reducing the production steps and process complexity. This avoids the cumbersome process caused by separate sewing of traditional double-row zippers and improves production efficiency.

[0013] 2. Flexible selection: You can choose single or double zipper teeth. Single zipper teeth are low-cost, while double zipper teeth are safe. You can flexibly choose according to actual needs.

[0014] 3. Strong adaptability: By sewing the stretch belt with left and right chain belts of different widths, two different stretch widths can be formed to suit the application of different products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic top view of the first embodiment of the present invention.

[0016] Figure 2 It is a front view schematic diagram of the first embodiment of the present utility model.

[0017] Figure 3 It is a front view schematic diagram of the second embodiment of the present utility model.

[0018] Figure 4 This is a front view schematic diagram of embodiment 32 of the present utility model.

[0019] Figure 5 It is a front view schematic diagram of the fourth embodiment of the present utility model.

[0020] Left link belt 1; first left link tooth 2; right link belt 3; first right link tooth 4; middle link belt 5; second left link tooth 6; second right link tooth 7; left link head 8; right link head 9; stretch strap 10. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments and drawings.

[0022] In the first embodiment, Figure 1 、 Figure 2As shown, a double-sided single-layer, double-layer T-shaped telescopic zipper comprises: a left link 1 with a first left coupling element 2 provided on one edge; a right link 3 with a first right coupling element 4 provided on one edge; a middle link 5 with a second left coupling element 6 and a second right coupling element 7 provided on both edges; a left link head 8 for connecting the first left coupling element 2 and the second left coupling element 66; a right link head 9 for connecting the first right coupling element 4 and the second right coupling element 7; and a telescopic band 10 with one edge fixed to the middle portion of the middle link 5, forming a T-shaped band structure. During use, the left link 1 is sewn to the body of the bag, and the right link 3 and the telescopic band 10 are sewn together to the lid of the bag, with the telescopic band 10 naturally forming the telescopic enclosure structure of the bag. The double-sided T-shaped zipper of Example 1 allows for an integrated sewing process during the box manufacturing process, significantly reducing the number of production steps and process complexity. This avoids the cumbersome process associated with separate sewing of traditional double-row zippers and improves production efficiency.

[0023] In the first embodiment, Figure 2 As shown, the first left coupling element 2 and the second left coupling element 6, the first right coupling element 4 and the second right coupling element 7 are all single-layer zipper elements; in the second embodiment, as shown Figure 3 As shown, the first left fastener 2 and the second left fastener 6 are double-layer zipper teeth, and the first right fastener 4 and the second right fastener 7 are single-layer zipper teeth; in the third embodiment, as shown Figure 4 As shown, the first left coupling element 2 and the second left coupling element 6, as well as the first right coupling element 4 and the second right coupling element 7, are all double-layer zipper elements. In the three embodiments described above, each zipper can utilize either single-layer or double-layer zipper elements. Single-layer zipper elements are low-cost, while double-layer zipper elements are safe, allowing for flexibility based on actual needs. Typically, in luggage, zippers used to store retractable enclosures utilize single-layer zipper elements, while zippers used to open and close luggage utilize double-layer zipper elements for greater security.

[0024] In the fourth embodiment, Figure 5 As shown, the widths of the left and right ties 1 and 3 are different, such as L1 > L2. By sewing the stretchable belt 10 with the left and right ties 1 and 2 of different widths, two different stretchable widths can be formed to suit different product applications.

[0025] Obviously, the above embodiments of the present invention are merely examples for illustrating the present invention and are not intended to limit the implementation of the present invention. Other obvious changes or modifications derived from the essence of the present invention still fall within the scope of protection of the present invention.

Claims

1. A double-sided single-layer or double-layer T-shaped telescopic zipper, characterized in that: include: A left chain belt (1), with a first left chain tooth (2) provided on one side edge; A right chain belt (3), with a first right chain tooth (4) provided on one side edge; A middle link belt (5) is provided with a second left link tooth (6) and a second right link tooth (7) on both side edges respectively; A left chain head (8) for connecting the first left chain tooth (2) and the second left chain tooth (6) in an opening and closing manner; A right chain head (9), used for opening and closing the first right chain tooth (4) and the second right chain tooth (7); The telescopic belt (10) has one side edge fixed to the middle of the middle chain belt (5) to form a T-shaped belt structure.

2. The double-sided single-layer or double-layer T-shaped telescopic zipper according to claim 1, characterized in that: The first left link tooth (2) and the second left link tooth (6), the first right link tooth (4) and the second right link tooth (7) are all single-layer zipper teeth.

3. The double-sided single-layer or double-layer T-shaped telescopic zipper according to claim 1, characterized in that: The first left link tooth (2) and the second left link tooth (6), and the first right link tooth (4) and the second right link tooth (7) are all double-layer zipper teeth.

4. The double-sided single-layer or double-layer T-shaped telescopic zipper according to claim 1, characterized in that: One group of the first left link tooth (2) and the second left link tooth (6), and the first right link tooth (4) and the second right link tooth (7) is a single-layer zipper tooth, and the other group is a double-layer zipper tooth.

5. The double-sided single-layer or double-layer T-shaped telescopic zipper according to claim 1, characterized in that: The left chain belt (1) and the right chain belt (3) have different widths.

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