Composite zipper for luggage and luggage

Abstract

The composite zipper comprises a first cloth strip, a second cloth strip and a third cloth strip which are arranged in parallel, the first cloth strip is provided with a first tooth row, the second cloth strip is provided with a second tooth row, the first tooth row is meshed with the second tooth row and provided with a first zipper head, and the second cloth strip is provided with a third tooth row. The third cloth strip is provided with a fourth tooth row, and the third tooth row is meshed with the fourth tooth row and provided with a second zipper head; the inner sides of the first cloth strip and the second cloth strip are connected through telescopic surrounding cloth; at least one end of the composite zipper is provided with a knife edge, and the main zipper and the telescopic surrounding zipper are compounded into a whole, so that the main zipper and the telescopic surrounding zipper can be simultaneously sewn on the luggage at one time, and the working efficiency is improved; in addition, through the knife edges at the two ends of the composite zipper, the two ends of the composite zipper can be aligned and sewn into a ring shape, so that the ring-shaped composite zipper can be sewn on the luggage through a sewing machine, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of zipper technology, specifically to a composite zipper for bags and luggage, and the bags themselves. Background Technology

[0002] A zipper is a commonly used connector that uses two chain straps (usually made of nylon, metal, or plastic) with one or more rows of interlocking or disengaging teeth to close and open by sliding the zipper pull. It is mainly used in bags, clothing, tents, outdoor products, and other items that require opening and closing functions.

[0003] To meet people's personalized needs and capacity requirements, existing bags are equipped with retractable zippers in addition to the main zipper for opening and closing, which can be used to change the bag's capacity.

[0004] However, in existing technologies, the main zipper and the telescopic zipper are usually separate and need to be sewn onto the bag separately, which increases the workload and reduces work efficiency. In addition, the beginning and end of the main zipper and the telescopic zipper usually cannot be aligned and sewn into a loop, so they can only be sewn onto the bag in a strip shape. However, this method cannot be used to sew with a sewing machine, which reduces work efficiency. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model proposes a composite zipper for bags and a bag.

[0006] To achieve the above-mentioned technical effects, the present invention adopts the following solution:

[0007] A composite zipper for bags includes a first strip of fabric, a second strip of fabric, and a third strip of fabric arranged side by side. The first strip of fabric has a first toothed row fixedly arranged near the edge of the second strip of fabric. The second strip of fabric has a second toothed row fixedly arranged near the edge of the first strip of fabric. The first toothed row of fabric engages with the second toothed row of fabric and is fitted with a first zipper head. The second strip of fabric has a third toothed row fixedly arranged near the edge of the third strip of fabric. The third strip of fabric has a fourth toothed row fixedly arranged near the edge of the second strip of fabric. The third toothed row of fabric engages with the fourth toothed row of fabric and is fitted with a second zipper head.

[0008] The inner sides of the first and second fabric strips are connected by a telescopic welt;

[0009] The composite zipper has a slit at at least one end.

[0010] In a preferred embodiment, the cutting edge is located at one end of the composite zipper, and the cutting edge includes a first connecting opening. The first connecting opening is rectangular in shape and is located at a apex of the third strip away from the fourth tooth row.

[0011] In a preferred embodiment, the length of the first connection port is 2cm.

[0012] In a preferred embodiment, the cutting edge is located at both ends of the composite zipper. The cutting edge includes a second connecting opening, a third connecting opening, and a fourth connecting opening. The second connecting opening, the third connecting opening, and the fourth connecting opening are all rectangular in shape. The second connecting opening and the third connecting opening are respectively located at two apex corners on the side of the third fabric strip away from the fourth tooth row. The fourth connecting opening is located at one apex corner on the side of the first fabric strip away from the first tooth row.

[0013] In a preferred embodiment, the length of the second connector is 2cm, the length of the third connector is 8.5cm, and the length of the fourth connector is 8.5cm.

[0014] In a preferred embodiment, the first, second, and third strips are all woven from yarn and weft. The yarn count is set to 22dTex to 28dTex, and the warp density is set to 205 ends / inch to 231 ends / inch. The weft count is set to 81dTex to 87dTex, and the weft density is set to 42 ends / inch to 48 ends / inch. The weft is a multifilament formed by bundling 33 to 39 monofilaments.

[0015] A bag includes a first shell, a second shell, and a composite zipper as described above. The first shell and the second shell are fastened together, and the composite zipper is sewn between the first shell and the second shell. The first and second ends of the composite zipper are connected by a slit stitch. The outer edges of the first strip of fabric and the outer edges of the third strip of fabric of the composite zipper are respectively sewn to the edges of the first shell and the second shell.

[0016] Compared with existing technologies, the beneficial effects are:

[0017] This utility model has a simple structure and is easy to use. It integrates the main zipper and the telescopic zipper into one unit, so that the main zipper and the telescopic zipper can be sewn onto the bag at the same time in one go, which speeds up the work efficiency. In addition, the two ends of the composite zipper can be aligned and sewn into a loop by the cutting edge at both ends of the composite zipper. This loop composite zipper can then be sewn onto the bag by a sewing machine, which speeds up the work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of another embodiment of the present invention.

[0020] Reference numerals: 1. First strip of fabric; 2. Second strip of fabric; 3. Third strip of fabric; 4. First toothed row; 5. Second toothed row; 6. Third toothed row; 7. Fourth toothed row; 8. First zipper head; 9. Second zipper head; 10. Telescopic drape; 11. First joint; 12. Second joint; 13. Third joint; 14. Fourth joint. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] A composite zipper for bags includes a first strip of fabric 1, a second strip of fabric 2, and a third strip of fabric 3 arranged side by side. The first strip of fabric 1 is provided with a first tooth row 4 near the edge of the second strip of fabric 2. The second strip of fabric 2 is provided with a second tooth row 5 near the edge of the first strip of fabric 1. The first tooth row 4 and the second tooth row 5 engage and are equipped with a first zipper head 8. The second strip of fabric 2 is provided with a third tooth row 6 near the edge of the third strip of fabric 3. The third strip of fabric 3 is provided with a fourth tooth row 7 near the edge of the second strip of fabric 2. The third tooth row 6 and the fourth tooth row 7 engage and are equipped with a second zipper head 9.

[0023] The inner sides of the first strip 1 and the second strip 2 are connected by a telescopic welt 10;

[0024] The composite zipper has a slit at at least one end.

[0025] The first strip 1, the second strip 2, the telescopic lining 10, the first toothed row 4, the second toothed row 5, and the first zipper head 8 together constitute the telescopic zipper; the second strip 2, the third strip 3, the third toothed row, the fourth toothed row, and the second zipper head 9 together constitute the main zipper.

[0026] By integrating the main zipper and the retractable zipper into one unit, both zippers can be sewn onto the bag in a single operation, increasing work efficiency. Furthermore, the cuts at both ends of the composite zipper allow for alignment and stitching of the two ends into a loop, enabling the looped composite zipper to be sewn onto the bag using a sewing machine, further accelerating work efficiency.

[0027] In a preferred embodiment, the cutting edge is located at one end of the composite zipper, and the cutting edge includes a first connecting opening 11. The first connecting opening 11 is rectangular in shape and is located at a apex of the third fabric strip 3 away from the fourth tooth row 7.

[0028] In a preferred embodiment, the length of the first connection port 11 is 2cm.

[0029] In a preferred embodiment, the cutting edge is located at both ends of the composite zipper. The cutting edge includes a second connecting opening 12, a third connecting opening 13, and a fourth connecting opening 14. The second connecting opening 12, the third connecting opening 13, and the fourth connecting opening 14 are all rectangular in shape. The second connecting opening 12 and the third connecting opening 13 are respectively located at two apex corners on the side of the third fabric strip 3 away from the fourth tooth row 7. The fourth connecting opening 14 is located at one apex corner on the side of the first fabric strip 1 away from the first tooth row 4.

[0030] In a preferred embodiment, the length of the second connection port 12 is 2cm, the length of the third connection port 13 is 8.5cm, and the length of the fourth connection port 14 is 8.5cm.

[0031] In a preferred embodiment, the first strip 1, the second strip 2, and the third strip 3 are all woven from yarn and weft. The yarn count is set to 22dTex to 28dTex, and the warp density is set to 205 threads / inch to 231 threads / inch. The weft count is set to 81dTex to 87dTex, and the weft density is set to 42 threads / inch to 48 threads / inch. The weft is a multifilament formed by bundling 33 to 39 monofilaments.

[0032] A bag includes a first shell, a second shell, and a composite zipper as described above. The first shell and the second shell are fastened together, and the composite zipper is sewn between the first shell and the second shell. The two ends of the composite zipper are connected by a slit stitch. The outer edges of the first fabric strip 1 and the outer edges of the third fabric strip 3 of the composite zipper are respectively sewn to the edges of the first shell and the second shell.

[0033] The two ends of the composite zipper are aligned and sewn together using a cutting tool to form a loop. When sewing the looped composite zipper onto the bag, a sewing machine can be used, which speeds up the sewing process.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A composite zipper for bags, characterized in that, The assembly includes a first strip of fabric (1), a second strip of fabric (2), and a third strip of fabric (3) arranged side by side. The first strip of fabric (1) is provided with a first toothed row (4) near the edge of the second strip of fabric (2). The second strip of fabric (2) is provided with a second toothed row (5) near the edge of the first strip of fabric (1). The first toothed row (4) and the second toothed row (5) are engaged and a first zipper head (8) is installed. The second strip of fabric (2) is provided with a third toothed row (6) near the edge of the third strip of fabric (3). The third strip of fabric (3) is provided with a fourth toothed row (7) near the edge of the second strip of fabric (2). The third toothed row (6) and the fourth toothed row (7) are engaged and a second zipper head (9) is installed. The inner sides of the first strip (1) and the second strip (2) are connected by a stretchable lining (10); The composite zipper has a slit at at least one end.

2. The composite zipper for bags as described in claim 1, characterized in that, The cutting edge is located at one end of the composite zipper. The cutting edge includes a first connecting opening (11). The first connecting opening (11) is rectangular in shape and is located at a apex of the third strip (3) away from the fourth tooth row (7).

3. The composite zipper for bags as described in claim 2, characterized in that, The length of the first connector (11) is 2cm.

4. The composite zipper for bags as described in claim 1, characterized in that, The cutting edge is located at both ends of the composite zipper. The cutting edge includes a second connecting port (12), a third connecting port (13), and a fourth connecting port (14). The second connecting port (12), the third connecting port (13), and the fourth connecting port (14) are all rectangular in shape. The second connecting port (12) and the third connecting port (13) are respectively located at the two top corners of the third fabric strip (3) away from the fourth tooth row (7). The fourth connecting port (14) is located at one top corner of the first fabric strip (1) away from the first tooth row (4).

5. The composite zipper for bags as described in claim 4, characterized in that, The second connector (12) is 2cm long, the third connector (13) is 8.5cm long, and the fourth connector (14) is 8.5cm long.

6. The composite zipper for bags as described in claim 1, characterized in that, The first strip (1), the second strip (2) and the third strip (3) are all woven from yarn and weft. The yarn count is set to 22dTex to 28dTex and the warp density is set to 205 threads / inch to 231 threads / inch. The weft count is set to 81dTex to 87dTex and the weft density is set to 42 threads / inch to 48 threads / inch. The weft is a multifilament formed by a bundle of 33 to 39 monofilaments.

7. A type of bag, characterized in that, The device includes a first housing, a second housing, and a composite zipper as described in claim 1. The first housing and the second housing are fastened together, and a composite zipper is sewn between the first housing and the second housing. The two ends of the composite zipper are connected by a slit stitch. The outer edges of the first fabric strip (1) and the third fabric strip (3) of the composite zipper are sewn to the edges of the first housing and the second housing, respectively.

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