Stretchable gusset fastener and double-stretchable gusset fastener

Abstract

To provide a stretchable gusset fastener having a simple structure.SOLUTION: A stretchable gusset fastener and a double-stretchable gusset fastener include a first fastener fabric 1, a second fastener fabric 2, a stretchable cloth 3, and a support structure. A first fastener element 11 is arranged on the first fastener fabric. A second fastener element is arranged on the second fastener fabric. Both ends of the stretchable fabric are connected to the first fastener fabric and the second fastener fabric, respectively. The support structure is arranged so as to approach the first fastener element and is provided inside the stretchable cloth. The support structure includes a support fabric 41 and a support member 42. The support fabric and the stretchable fabric form a storage space by surrounding the space. The support member is arranged inside the storage space, and has a width equal to or greater than a width when two fastener elements are closed, thereby, supporting the fastener elements and the stretchable fabric.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to the field of fastener technology, and more particularly to telescoping gusset fasteners and double telescoping gusset fasteners. [Background technology]

[0002] In the bag industry, the use of telescopic gussets and telescopic gusset zippers to expand the capacity of a bag is a common structure. For example, the double telescopic gusset zipper disclosed in Chinese Utility Model Patent CN217284960U uses two rows of zippers and a fabric belt between them to expand the bag's space, forming a telescopic gusset structure to achieve the effect of expanding and contracting the bag's space. Conventional telescopic gusset zipper structures, as shown in Figures 1 and 2, generally involve a steel wire bracket A1 attached to the outside of the telescopic gusset zipper, and a casing A2 of the steel wire bracket A1 secured to the zipper fabric A3, the telescopic gusset A4, and the edge cover A5. While this structure is widely used on bags, it is relatively complex to install and the weight of the steel wire bracket A1 is relatively high. For this reason, the telescopic gusset zipper shown in Figures 3 and 4 has appeared on the market. This structure directly secures the zipper fabric A3 to the seam of the telescopic gusset A4, resulting in a simple process and light weight. However, the elastic gusset fastener is unsupported and prone to wrinkles, causing an uneven appearance, which significantly reduces the aesthetic appeal of the bag. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Chinese Utility Model Patent No. CN217284960U Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention discloses an expansion gusset fastener with a simple structure to improve the problems that the conventional expansion gusset fastener process is complicated and prone to wrinkles. [Means for solving the problem]

[0005] The present invention adopts the following solution. The elastic gusset fastener comprises a first zipper fabric, a second zipper fabric, an elastic fabric, and a support structure, a first zipper element disposed on the first zipper fabric, a second zipper element disposed on the second zipper fabric, both ends of the elastic fabric connected to the first zipper fabric and the second zipper fabric, respectively, the support structure disposed close to the first zipper element and provided inside the elastic fabric, the support structure comprising a support fabric and a support member, the support fabric and the elastic fabric surroundingly form a storage space, the support member disposed within the storage space, and its width is equal to or greater than the width of the two zipper elements when closed, thereby supporting the zipper element and the elastic fabric.

[0006] Preferably, the support cloth includes a first fixing cloth and a second fixing cloth, and the two fixing cloths are connected via an inner zipper.

[0007] Preferably, the end of the first fixing cloth away from the inner zipper is aligned with the stretch cloth and is fixed to the stretch cloth and the first zipper cloth by a stitch, and the end of the second fixing cloth away from the inner zipper is fixed to the stretch cloth by a stitch.

[0008] Preferably, one end of the stretchable cloth is folded to form the first fastening cloth, and this folded portion is fixed to the first fastening cloth by a stitch.

[0009] Preferably, the accommodation space is annular, and the support member has a support surface facing the stretchable cloth, the support surface being arranged along a horizontal direction.

[0010] Preferably, the support member is hollow.

[0011] Preferably, the first fastener element and the second fastener element are inverted on the inside of the first fastener fabric and the second fastener fabric, respectively.

[0012] Preferably, the material of the support member is a plastic material, metal, wood, leather, carbon fiber or foam material.

[0013] A double-stretch gusset fastener is further provided, which includes two stretch gusset fasteners according to any one of the above claims, wherein a primary fastener element is disposed at the end of the two first fastener fabrics away from the first fastener element, and the two first fastener fabrics are configured to be connected via the primary fastener element. [Effects of the Invention]

[0014] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0015] 1. Compared with conventional elastic gusset fasteners, the elastic gusset fastener of this application has a simpler structure, simplifies the process, improves production efficiency, and reduces processing costs. At the same time, the support structure is installed on the inside of the elastic fabric, providing effective support for the elastic fabric, making the elastic gusset fastener appear smooth and wrinkle-free, improving the overall aesthetics of the product and solving the problem of the zipper box easily becoming dented. Furthermore, the width of the support member is greater than the width of the two zipper elements when closed, ensuring the reliability of the support structure and making the zipper fabric appear more smooth.

[0016] 2. The support member is hollow, which reduces the volume and weight of the support member, making it easier for users to carry. The support member is preferably made of plastic, metal, wood, leather, carbon fiber, or foam material, which ensures support strength while reducing weight.

[0017] 3. The double-layered gusset zipper allows the bag to have a larger capacity, making it easier to store more luggage and more convenient for traveling. The double support and reinforcement make the bag look flatter and more beautiful, and the zipper strength is stronger, making it more durable and longer-lasting. [Brief explanation of the drawings]

[0018] In order to more clearly explain the technical solutions of the embodiments of the present invention, the following briefly introduces drawings that need to be used in the embodiments. It should be understood that the following drawings only illustrate some examples of the present invention, and should not be considered as limiting the scope. Those skilled in the art can also derive other related drawings based on these drawings without exerting any creative efforts. [Figure 1] 1 is a structural schematic diagram of a conventional expansion gusset fastener in the background art when it is expanded; [Figure 2] 1 is a structural schematic diagram of a conventional elastic gusset fastener in the background art when closed; [Figure 3] 1 is a structural schematic diagram of a conventional expansion gusset fastener in the background art when it is expanded; [Figure 4] 1 is a structural schematic diagram of a conventional elastic gusset fastener in the background art when closed; [Figure 5] 1 is a schematic diagram of the structure of an embodiment of the stretchable fabric of the present invention when it is unfolded. [Figure 6] 3A to 3C are schematic structural diagrams of the stretchable fabric of one embodiment of the present invention when contracted from different viewpoints. [Figure 7] 3A to 3C are schematic structural diagrams of the stretchable fabric of one embodiment of the present invention when contracted from different viewpoints. [Figure 8]1 is a schematic diagram of the structure of the stretchable fabric according to another embodiment of the present invention when it is unfolded; [Figure 9] 3A to 3C are schematic structural diagrams of a stretchable fabric according to another embodiment of the present invention when contracted from different perspectives. [Figure 10] 3A to 3C are schematic structural diagrams of a stretchable fabric according to another embodiment of the present invention when contracted from different perspectives. [Figure 11] FIG. 10 is a schematic diagram of the structure of the stretchable cloth when the first fastener element and the second fastener element of one embodiment of the present invention are inverted. [Figure 12] 12 is a schematic diagram of the structure of the stretchable fabric of FIG. 11 when it is contracted. [Figure 13] FIG. 10 is a schematic diagram of the structure of the stretchable cloth when the first zipper element and the second zipper element of another embodiment of the present invention are inverted. [Figure 14] 14 is a schematic diagram of the structure of the stretchable fabric of FIG. 13 when it is contracted. [Figure 15] 1 is a structural schematic diagram of a double elastic gusset fastener according to an embodiment of the present invention, in which one elastic fabric expands and another elastic fabric contracts. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative effort are also within the scope of protection of the present invention. Therefore, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative effort are also within the scope of protection of the present invention.

[0020] Example 5 to 10, this embodiment provides an elastic gusset fastener, which includes a first fastener fabric 1, a second fastener fabric 2, an elastic fabric 3, and a support structure 4, a first fastener element 11 is disposed on the first fastener fabric 1, a second fastener element 12 is disposed on the second fastener fabric 2, both ends of the elastic fabric 3 are connected to the first fastener fabric 1 and the second fastener fabric 2, the support structure 4 is disposed close to the first fastener element 11 and is disposed inside the elastic fabric 3, the support structure 4 includes a support fabric 41 and a support member 42, the support fabric 41 and the elastic fabric 3 surround and form a receiving space, and the support member 42 is disposed within the receiving space, and its width is equal to or greater than the width of the two fastener elements when closed, thereby supporting the fastener elements and the elastic fabric 3.

[0021] For example, an elastic gusset zipper is used on a suitcase. A first zipper element 11 is installed at one end of a first zipper fabric 1, and a main zipper 5 is installed at the other end. A user opens and closes the suitcase by opening and closing the main zipper 5. The first zipper element 11 and the second zipper element 12 allow the elastic fabric 3 to contract and expand. When the first zipper element 11 and the second zipper element 12 close, the elastic fabric 3 contracts, and the positions of the two zipper elements are supported by the support member 42, preventing depressions at the zipper element locations and ensuring a flat appearance of the elastic gusset zipper, thereby enhancing the aesthetic appeal of the suitcase. When the first zipper element 11 and the second zipper element 12 separate, the elastic fabric 3 expands, increasing the capacity of the suitcase. The inside of the expanded elastic fabric 3 is supported by the support member 42, preventing depressions at the expanded elastic fabric 3 and ensuring the aesthetic appeal of the expanded elastic gusset zipper.

[0022] It should be noted that, compared with conventional elastic gusset zippers, this embodiment has a simpler structure, simplifies the process, improves production efficiency, and saves processing costs. At the same time, the support structure 4 is installed inside the elastic fabric 3, which can provide effective support inside the elastic fabric 3, making the appearance of the elastic gusset zipper flat and wrinkle-free, improving the overall aesthetics of the product and solving the problem of the mouth of the conventional zipper box being prone to dents. Here, the width of the support member 42 is greater than the width of the two zipper elements when closed, which ensures the reliability of the support structure 4 and makes the zipper fabric flatter.

[0023] In one preferred embodiment, the support cloth 41 includes a first fixing cloth 411 and a second fixing cloth 412, and the two fixing cloths are connected via an inner zipper 413, making it easy to assemble and replace the support member 42. In other embodiments, the first fixing cloth 411 and the second fixing cloth 412 may also be fixed via a sewing thread, or the support cloth 41 may be integrally installed, and this is not a limitation or specific limitation.

[0024] Based on the above embodiment, the first zipper fabric 1 and the second zipper fabric 2 include the following two embodiments.

[0025] 5 to 7, the end of the first fixing cloth 411 away from the inner zipper 413 is aligned with the elastic cloth 3 and is sewn together with the elastic cloth 3 and the first zipper cloth 1, and the end of the second fixing cloth 412 away from the inner zipper 413 is sewn together with the elastic cloth 3. Here, the first fixing cloth 411, the second fixing cloth 412 and the elastic cloth 3 form an enclosed storage space, and the support member 42 is inserted by opening the inner zipper 413 to fill the storage space and provide a support effect.

[0026] 8 to 10, one end of the elastic fabric 3 is folded to form a first fixed fabric 411, and this folded portion is fixed to the seam of the first zipper fabric 1. In this embodiment, the embodiment of the second fixed fabric 412 is the same as in embodiment 1, and will not be further described here. The first fixed fabric 411 is formed by folding one end of the elastic fabric 3. For ease of understanding, the folded portion of the elastic fabric 3 forms an extension portion, and an inner zipper element is provided on this extension portion to openably and closably connect with the second fixed fabric 412. Compared with embodiment 1, this embodiment can further simplify the process and improve production efficiency.

[0027] Based on the above embodiment, in one optional embodiment of the present invention, the accommodating space is annular, and the support member 42 has a support surface 421 facing the elastic fabric 3, and this support surface 421 is arranged along the horizontal direction to make the supported fastener element and the elastic fabric 3 more flat.

[0028] Preferably, the support member 42 is hollow, for example, a hollow case, or is configured in a "concave" shape, thereby reducing the volume and weight of the support member 42 and making it easier for users to carry. Preferably, the support member 42 is made of a material such as plastic, metal, wood, leather, carbon fiber, or foam material, which ensures support strength while also achieving weight reduction. It should be noted that both ends of the support member 42 are attached to the inside of the support cloth 41 and maintained in tension to prevent the support member 42 from sliding and ensure the support effect.

[0029] In any of the above embodiments, the first zipper element 11 and the second zipper element 12 may be installed in an inverted manner on the inside of the first zipper fabric 1 and the second zipper fabric 2, respectively. For example, a reverse stitching (inverted placement) may be used to achieve a flatter zipper appearance and optimal flatness. Furthermore, grooves may be formed on the support member 42, allowing the zipper elements to be accommodated within the grooves, supporting the zipper elements while concealing their height, thereby ensuring that the zipper elements maintain a flat state outside the zipper fabric. In one embodiment, referring to FIGS. 11 and 12, one end of the elastic fabric 3 is folded to form a first fastening piece 411, and this folded portion is secured to the first zipper fabric 1 by a seam. In another embodiment, referring to FIGS. 13 and 14, the first fastening piece 411 is aligned with one end of the elastic fabric and secured to the first zipper fabric 1 by a seam. In the above two embodiments, the second fixing cloth 412 may be installed so as to be fixed to the seam of the elastic cloth 3, but is not limited thereto and is not specifically limited thereto.

[0030] 15, the present invention further provides a double-telescopic gusset zipper, which includes two of the telescopic gusset zippers described in any one of the above embodiments, wherein a main fastening element 51 is disposed at the end of the first fastening fabric 1 away from the first fastening element 11, and the two first fastening fabrics 1 are connected via the main fastening element 51. When used, users can select and open one or two telescopic gusset zippers as needed to expand the capacity, providing flexibility. The double-telescopic gusset zipper also provides a larger capacity expansion space for the bag, making it easier to store more luggage and more convenient for traveling. Here, the double support and reinforcement result in a flatter and more beautiful appearance, better fastening strength, and a longer service life.

[0031] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. All technical solutions within the concept of the present invention are included in the protection scope of the present invention. [Explanation of symbols]

[0032] A1 Steel Wire Bracket A2 casing A3 zipper fabric A4 elastic gusset A5 Edge Cover 1. First zipper fabric 11 First fastener element 2 Second zipper fabric 12 Second fastener element 3 Stretch fabric 4 Support structure 41 Support cloth 411 First Fixing Cloth 412 Second Fixing Cloth 413 Inner Zipper 42 Support member 421 Support surface 5 Main Zipper 51 Primary fastener element

Claims

1. an elastic gusset fastener comprising a first fastener fabric, a second fastener fabric, a stretch fabric, and a support structure, a first fastener element disposed on the first fastener fabric, a second fastener element disposed on the second fastener fabric, both ends of the stretch fabric connected to the first fastener fabric and the second fastener fabric, respectively, the support structure disposed close to the first fastener element and provided inside the stretch fabric, the support structure comprising a support fabric and a support member, the support fabric and the stretch fabric surroundingly forming a storage space, the support member disposed within the storage space, and its width is equal to or greater than the width of two fastener elements when closed, thereby supporting the fastener elements and the stretch fabrics.

2. The elastic gusset fastener according to claim 1, wherein the support fabric includes a first fixing fabric and a second fixing fabric, and the two fixing fabrics are connected via an inner fastener.

3. The elastic gusset fastener according to claim 2, characterized in that the end of the first fixing cloth away from the inner zipper is aligned with the elastic cloth and is fixed to the elastic cloth and the first zipper cloth by a stitch, and the end of the second fixing cloth away from the inner zipper is fixed to the elastic cloth by a stitch.

4. The elastic gusset fastener according to claim 2, wherein one end of the elastic fabric is folded to form the first fastening fabric, and this folded portion is fixed to the first fastening fabric by a stitch.

5. The elastic gusset fastener according to claim 1, characterized in that the accommodation space is annular, the support member has a support surface facing the elastic cloth, and the support surface is arranged along a horizontal direction.

6. 2. The elastic gusset fastener according to claim 1, wherein the support member is hollow.

7. The elastic gusset fastener according to any one of claims 1 to 6, characterized in that the first fastener element and the second fastener element are inverted on the inside of the first fastener fabric and the second fastener fabric, respectively.

8. 7. The elastic gusset fastener according to claim 1, wherein the material of the support member is a plastic material, a metal, wood, leather, carbon fiber, or a foam material.

9. A double-stretchable gusset fastener comprising two of the stretchable gusset fasteners described in any one of claims 1 to 6, wherein a primary fastener element is disposed at the end of each of the two first fastener fabrics away from the first fastener element, and the two first fastener fabrics are configured to be connected via the primary fastener element.

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