Retractable Enclosure Zipper and Double-Layer Retractable Enclosure Zipper

The present application claims the priority of Chinese patent application No. 202410623021.2, filed on May 17, 2024, and the entire contents of which are hereby incorporated by reference in its entirety.

The present disclosure relates to the technical field of zippers, and more specifically to a retractable enclosure zipper and a double-layer retractable enclosure zipper

In the field of luggage, it is very common to expand the capacity of a bag by setting a retractable enclosure and a retractable enclosure zipper. For example, a double-layer retractable enclosure zipper disclosed in Chinese patent CN217284960U forms a retractable enclosure structure by setting a double-row zipper and a strap that can expand the space of the bag between the double-row zipper, thereby achieving the expansion and contraction effect of the space of the bag. An existing retractable enclosure zipper structure is generally as shown in, where a wire bracket Ais arranged on an outer side of the retractable enclosure zipper, and an outer sleeve Aof the wire bracket Ais fixed together with a zipper cloth A, a retractable enclosure A, and a binding strip A. This structure is widely applied to luggage, but its manufacturing process is relatively complicated, and the wire bracket Aadds a lot of weight. For this reason, there are now retractable enclosure zippers on the market, as shown in. This structure directly sews and fixes the zipper cloth Ato the retractable enclosure A, which is simple to manufacture and lightweight. However, because this retractable enclosure zipper has no support, it is prone to wrinkles, resulting in an uneven appearance, and therefore the aesthetics of the luggage are greatly reduced.

The present disclosure discloses a retractable enclosure zipper with a simple structure, which is designed to improve the existing retractable enclosure zipper's complex manufacturing process and problem of being prone to wrinkling.

A retractable enclosure zipper, including: a first zipper cloth, a second zipper cloth, a retractable cloth, and a support structure; wherein the first zipper cloth is arranged with first zipper teeth, and the second zipper cloth is arranged with second zipper teeth; an end of the retractable cloth is connected to the first zipper cloth, and another end of the retractable cloth is connected to the second zipper cloth; the support structure is disposed close to the first zipper teeth and is disposed on an inner side of the retractable cloth; the support structure includes a supporting cloth and a support member; the supporting cloth and the retractable cloth enclose to define a receiving space, and the support member is disposed in the receiving space; a width of the support member is greater than or equal to a width of a combination of the first zipper teeth and the second zipper teeth when engaged, for supporting the first zipper teeth, the second zipper teeth, and the retractable cloth.

In some embodiments, the supporting cloth includes a first fixing cloth and a second fixing cloth that are connected together by an inner zipper.

In some embodiments, an end of the first fixing cloth away from the inner zipper is aligned with the retractable cloth and is fixed to the retractable cloth and the first zipper cloth by sewing; an end of the second fixing cloth away from the inner zipper is fixed to the retractable cloth by sewing.

In some embodiments, a part on an end of the retractable cloth is folded to form the first fixing cloth, and the part is sewn and fixed to the first zipper cloth.

In some embodiments, the receiving space is annular in shape, and the support member is arranged with a support surface facing the retractable cloth; the support surface is arranged in a horizontal direction.

In some embodiments, the support member is hollow.

In some embodiments, the first zipper teeth are arranged to be inverted on an inner side of the first zipper cloth, and the second zipper teeth are arranged to be inverted on an inner side of the second zipper cloth.

In some embodiments, the support member is made of plastic, metal, wood, leather, carbon fiber, or foam material.

A double-layer retractable enclosure zipper, including includes two retractable enclosure zippers as above; wherein for the first zipper cloth of each of the two retractable enclosure zippers, an end of the first zipper cloth away from the first zipper teeth is arranged with main zipper teeth; two the first zipper cloths of the two retractable enclosure zippers are configured to be connected via the main zipper teeth.

By adopting the above technical scheme, the present disclosure may achieve the following technical effects.

1. compared with an existing retractable enclosure zipper, the present disclosure proposes a simple structure, which may simplify the manufacturing process, improve production efficiency, and save processing costs. In addition, the support structure is arranged on the inner side of the retractable cloth, which may effectively support the inner side of the retractable cloth, such that the appearance of the retractable enclosure zipper is flat and wrinkle-free, which improves the overall aesthetics of the product and solves the problem of an existing zipper bag whose opening is prone to sagging. In particular, the width of the support member is not less than the width when the two zipper teeth are engaged, which ensures the reliability of the support structure and makes the zipper cloth flatter.

2. the support member is hollow, so as to reduce the volume and weight of the support member and facilitate carrying by the user; the support member may be made of plastic, metal, wood, leather, carbon fiber, or foam material, so as to achieve lightweight while ensuring support strength.

3. the double-layer retractable enclosure zipper provides the bag with more expansion space, making it easier to store more luggage and facilitating travel. Further, the double-support reinforcement provides a more even and pleasing appearance, and the zipper is stronger and more durable.

A-wire bracket; A-outer sleeve; A-zipper cloth; A-retractable enclosure; A-binding strip;

-first zipper cloth;-first zipper teeth;

-second zipper cloth;-second zipper teeth;

-retractable cloth;

-support structure;-supporting cloth;-first fixing cloth;-second fixing cloth;-inner zipper;-support member;-support surface;

-main zipper;-main zipper teeth.

In order to make the purposes, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure are described in a clear and complete manner below in conjunction with the appended drawings. Obviously, the embodiments described are part of the embodiments of the present disclosure, but not all of them. All other embodiments obtained by those skilled in the art without creative effort based on the embodiments of the present disclosure fall within the scope of the present disclosure. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings does not intend to limit the scope of the present disclosure, but only represents selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of the present disclosure.

Referring to, the present disclosure provides a retractable enclosure zipper, including a first zipper cloth, a second zipper cloth, a retractable cloth, and a support structure; where the first zipper clothis arranged with first zipper teeth, and the second zipper clothis arranged with second zipper teeth; an end of the retractable clothis connected to the first zipper cloth, and another end of the retractable clothis connected to the second zipper cloth; the support structureis disposed close to the first zipper teethand is disposed on an inner side of the retractable cloth; the support structureincludes a supporting clothand a support member; the supporting clothand the retractable clothenclose to define a receiving space, and the support memberis disposed in the receiving space; a width of the support memberis greater than or equal to a width of a combination of the first zipper teeth and the second zipper teeth when engaged, for supporting the first zipper teeth, the second zipper teeth, and the retractable cloth.

For example, the retractable enclosure zipper is applied to a bag. An end of the first zipper clothis arranged with the first zipper teeth, and another end of the first zipper clothis arranged with a main zipper. The user can open and close the bag by opening and closing the main zipper, and achieve the contraction and expansion of the retractable cloththrough the first zipper teethand the second zipper teeth. When the first zipper teethand the second zipper teethare engaged, the retractable clothis contracted, and the position of the first zipper teethand the second zipper teethis supported by the support memberto prevent the zipper teeth from sinking, thereby ensuring a flat appearance of the retractable enclosure zipper and thus enhancing the aesthetics of the bag. When the first zipper teethis separated from the second zipper teeth, the retractable clothis unfolded, thereby expanding the capacity of the bag. The inner side of the unfolded retractable clothis supported by the support member, thereby preventing the retractable clothfrom collapsing after expansion and thus ensuring the appearance of the unfolded retractable enclosure zipper.

It should be noted that, compared with an existing retractable enclosure zipper, the present disclosure proposes a simple structure, which may simplify the manufacturing process, improve production efficiency, and save processing costs. In addition, the support structureis arranged on the inner side of the retractable cloth, which may effectively support the inner side of the retractable cloth, such that the appearance of the retractable enclosure zipper is flat and wrinkle-free, which improves the overall aesthetics of the product and solves the problem of an existing zipper bag whose opening is prone to sagging. In particular, the width of the support memberis not less than the width when the two zipper teeth are engaged, which ensures the reliability of the support structureand makes the zipper cloth flatter.

In some embodiments, the supporting clothincludes a first fixing clothand a second fixing cloththat are connected together by an inner zipper, which facilitates the assembly and replacement of the support member. In other embodiments, the first fixing clothand the second fixing clothmay be fixed by a sewing thread, or the supporting clothmay be integrally formed, which is not limited herein.

On the basis of the above embodiments, the first zipper clothand the second zipper clothinclude the following two implementation:

Implementation 1: Referring to, an end of the first fixing clothaway from the inner zipperis aligned with the retractable clothand is fixed to the retractable clothand the first zipper clothby sewing. An end of the second fixing clothaway from the inner zipperis fixed to the retractable clothby sewing. The first fixing cloth, the second fixing cloth, and the retractable clothenclose to define the receiving space, and the support memberis inserted upon opening of the inner zipperto fill the receiving space, thereby achieving a supporting effect.

Implementation 2: Referring to, an end of the retractable clothis folded to form the first fixing cloth, and a folded part of the retractable clothis sewn and fixed to the first zipper cloth. In this implementation, the implementation method of the second fixing clothis the same as that of Implementation 1, which will not be described in detail herein. The first fixing clothis formed by folding one end of the retractable cloth. It is easy to understand that the folded part of the retractable clothforms an extension section, and the extension section is arranged with inner zipper teeth for connection and dis-connection with the second fixing cloth. Compared with Implementation 1, the present process may be further simplified and the production efficiency may be improved.

In some embodiments, the receiving space is annular in shape, and the support memberis arranged with a support surfacefacing the retractable cloth; the support surfaceis arranged in a horizontal direction so as to make the supported zipper teeth and the retractable clothmore even.

In some embodiments, the support memberis hollow, such as a hollow shell, or is arranged in a “U” shape, so as to reduce the volume and weight of the support memberand facilitate carrying by the user. In some embodiments, the support memberis made of plastic, metal, wood, leather, carbon fiber, or foam material, so as to achieve lightweight while ensuring support strength. It should be noted that both ends of the support memberare affixed to the inner side of the supporting clothand remain taut to prevent the support memberfrom slipping, thereby ensuring the supporting effect.

In any of the above embodiments, the first zipper teethand the second zipper teethmay be arranged to be inverted on inner sides of the first zipper clothand the second zipper cloth, respectively. For example, the teeth may be arranged in an inverted manner, such that the appearance of the zipper is more even and reaches an optimal even state. Furthermore, the support membermay define a recess in which the teeth can be accommodated, such that the teeth are supported and their height is concealed, thereby ensuring that the teeth remain flush on the outer side of the zipper cloth. As an implementation, combined with, an end of the retractable clothis folded to form the first fixing cloth, and the folded part is sewn and fixed to the first zipper cloth. As another implementation, combining, the first fixing clothis aligned with an end of the retractable clothand is fixed to the first zipper clothby sewing. In the above two implementations, the second fixing clothmay be sewn to the retractable cloth, which is not limited herein.

In combination with, the present disclosure further provides a double-layer retractable enclosure zipper, which includes two retractable enclosure zippers as described in any of the preceding embodiments, where an end of the first zipper clothaway from the first zipper teethis arranged with main zipper teeth, and the two first zipper clothsare configured to be connected via the main zipper teeth. When in use, the user can choose to open one or both of the retractable enclosure zippers for expansion of capacity as needed, with full flexibility. In addition, the double-layer retractable enclosure zipper provides the bag with more expansion space, making it easier to store more luggage and facilitating travel. Further, the double-support reinforcement provides a more even and pleasing appearance, and the zipper is stronger and more durable.

The above is only some embodiments of the present disclosure. The scope of the present disclosure is not limited to the above embodiments, and any technical solution falling within the idea of the present disclosure is within the scope of the present disclosure.