Explosion-Proof Zipper

The present disclosure relates to the technical field of zippers, specifically to an explosion-proof zipper.

Zippers are widely used as quick fastening devices in products like clothing and bags. A zipper typically consists of a left zipper, a right zipper, and a slider, with the slider facilitating the interlocking or disengaging of the left and right zippers. Existing zippers often experience zipper tooth misalignment during repeated opening and closing, or when subjected to external pressure, leading to the zipper bursting open.

To improve the explosion-proof performance of zippers, a Chinese present disclosure patent, with the publication number CN204363123U, introduces a double-layer explosion-proof zipper. In this design, the zipper tape includes a zipper tape itself, an outer zipper tooth row on its upper side, and an inner zipper tooth row on its lower side, sewn to the upper and lower sides of the zipper tape by a sewing line. The left and right zipper tapes can be interlocked or separated by the slider to manage both the inner and outer tooth rows. However, in this solution, because the inner and outer tooth rows are sewn to the upper and lower sides of the zipper tape by the same sewing line, both rows of zipper tooth and their interlocking teeth align in a straight line. Consequently, if a sharp object penetrates the gap between the zipper tooth or the interlocking teeth, it can easily pierce through and split the zipper, risking loss or theft of the contents within the bag.

Therefore, an explosion-proof zipper with both explosion-proof and puncture-resistant properties is yet to be designed.

The objective of the present disclosure is to address the shortcomings of the existing technology by providing an explosion-proof zipper that at least solves one of these technical problems, boasting explosion-proof and puncture-resistant properties.

To achieve the above objectives, the technical solutions adopted by the present disclosure are as follows.

An explosion-proof zipper is provided, including: a first zipper including a first left zipper tape and a first right zipper tape, a first left zipper tooth sewn to one end of the first left zipper tape, and a first right zipper tooth sewn to one end of the first right zipper tape; a second zipper including a second left zipper tape and a second right zipper tape, a second left zipper tooth sewn to one end of the second left zipper tape, and a second right zipper tooth sewn to one end of the second right zipper tape; a left extension tape, in which one end of the left extension tape is integrally woven with the first left zipper tape and the second left zipper tape; a right extension tape, in which one end of the right extension tape is integrally woven with the first right zipper tape and the second right zipper tape; and a slider, used to enable the first left zipper tooth and the first right zipper tooth to be fittingly engaged to or disengaged from each other, and to enable the second left zipper tooth and the second right zipper tooth to be fittingly engaged to or disengaged from each other.

Preferably, the first left zipper tooth is sewn to an outer side of the first left zipper tape through a sewing line, and the first right zipper tooth is sewn to an outer side of the first right zipper tape through the sewing line; the second left zipper tooth is sewn to an outer side of the second left zipper tape through the sewing line, and the second right zipper tooth is sewn to an outer side of the second right zipper tape through the sewing line.

Preferably, the first zipper further includes a third left zipper tooth sewn to an inner side of the first left zipper tape, and a third right zipper tooth sewn to an inner side of the first right zipper tape.

Preferably, the first left zipper tooth is sewn to an inner side of the first left zipper tape through the sewing line, and the first right zipper tooth is sewn to an inner side of the first right zipper tape through the sewing line; the second left zipper tooth is sewn to an inner side of the second left zipper tape through the sewing line, and the second right zipper tooth is sewn to an inner side of the second right zipper tape through the sewing line.

Preferably, a tooth gap where the first left zipper tooth and the first right zipper tooth are fittingly engaged and a tooth gap where the second left zipper tooth and the second right zipper tooth are fittingly engaged are misaligned.

Preferably, a size of the first left zipper tooth differs from a size of the second left zipper tooth.

Preferably, a width of the first zipper is greater than a width of the second zipper.

Preferably, the slider includes a first slider and a second slider that are separately arranged, the first slider is used to enable the first left zipper tooth and the first right zipper tooth to be fittingly engaged to or disengaged from each other, and the second slider is used to enable the second left zipper tooth and the second right zipper tooth to be fittingly engaged to or disengaged from each other.

Preferably, the slider is a dual-layer slider arranged integrally, a first layer of the dual-layer slider is used to enable the first left zipper tooth and the first right zipper tooth to be fittingly engaged to or disengaged from each other, and a second layer of the dual-layer slider is used to enable the second left zipper tooth and the second right zipper tooth to be fittingly engaged to or disengaged from each other.

Preferably, the dual-layer slider is provided with a top plate, a middle plate, and a bottom plate sequentially from top to bottom, the top plate is connected to the middle plate through a first guide column, the middle plate is connected to the bottom plate through a second guide column; the top plate, the middle plate, and the first guide column form the first layer of the dual-layer slider, and the middle plate, the bottom plate, and the second guide column form the second layer of the dual-layer slider; in which a front end of the bottom plate is arranged at a rear side of a front end of the first guide column.

Compared with the prior art, the present disclosure at least has the following beneficial effects.

In the present disclosure, the first left zipper tooth is sewn to one end of the first left zipper tape, and the second left zipper tooth is sewn to one end of the second left zipper tape. The first right zipper tooth is sewn to one end of the first right zipper tape, and the second right zipper tooth is sewn to one end of the second right zipper tape. Moreover, the left extension tape, first left zipper tape, and second left zipper tape are integrally formed, resulting in a T-shaped structure. The same applies to the right side: the right extension tape, first right zipper tape, and second right zipper tape are integrally formed, yielding a T-shaped structure. This arrangement prevents the same-side zipper tooth from being sewn to both sides of the same zipper tape by the same sewing line, avoiding alignment of the zipper tooth gaps. If a sharp object penetrates the gap between the first left zipper tooth, it is more likely to encounter the interlocking tooth of the second left zipper tooth or the zipper tape, enhancing puncture resistance. Additionally, having two independent zippers contributes to the explosion-proof performance.

Additionally, the first left zipper tooth and the first right zipper tooth are designed to interlock with a mismatch to the second left zipper tooth and the second right zipper tooth. As a result, when a sharp object pierces through the position where the first left zipper tooth and the first right zipper tooth interlock, it will not reach the interlocking position of the second left zipper tooth and the second right zipper tooth, as it is blocked by the second zipper. This arrangement further enhances the puncture resistance of the zipper.

Reference numeral:, Explosion-proof zipper;, First zipper;, First left zipper tape;, First right zipper tape;, First left zipper tooth;, First right zipper tooth;, Third left zipper tooth;, Third right zipper tooth;, Second zipper;, Second left zipper tape;, Second right zipper tape;, Second left zipper tooth;, Second right zipper tooth;, Left extension tape;, Right extension tape;, First slider;, Second slider;, Sewing line;, Double-layer slider;, Top plate;, First top side wing;, Middle plate;, First guide flange;, Second top side wing;, Bottom plate;, Second guide flange;, First guide column;, Second guide column.

The technical solution of embodiments of the present disclosure is described clearly and completely below, in conjunction with the drawings of the embodiment. Evidently, the described embodiments are only a portion of the embodiments of the present disclosure, not all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by a person skilled in the art without creative work also belong to the protection scope of the present disclosure.

It should be noted that the terms “center,” “longitudinal,” “lateral,” “up,” “down,” “front,” “back,” “left,” “right,” “top,” “bottom,” “inside,” “outside,” “rear,” “side,” “circumferential,” and other directional or positional indicators refer to the orientations or positional relationships shown in the drawings. These terms are for convenience in describing the present disclosure and simplifying the description, not to indicate or imply that the referred device or element must have a specific orientation or be constructed and operated in a specific manner, and thus do not limit the present disclosure. Additionally, terms like “first” and “second” are only to distinguish multiple components or structures of the same or similar design and do not indicate any special restrictions on the arrangement order or connection relationship.

Referring toto, one embodiment of the present disclosure provides an explosion-proof zipper, which includes a first zipper, a second zipper, a left extension tape, a right extension tape, and a slider. The first zipperincludes a first left zipper tape, a first right zipper tape, a first left zipper tooth, and a first right zipper tooth. The first left zipper toothis sewn to one end of the first left zipper tapethrough a sewing line, and the first right zipper toothis sewn to one end of the first right zipper tapethrough the sewing line. The first left zipper toothand the first right zipper toothcan be fittingly engaged to each other. The second zipperincludes a second left zipper tape, a second right zipper tape, a second left zipper tooth, and a second right zipper tooth. The second left zipper toothis sewn to one end of the second left zipper tapethrough the sewing line, and the second right zipper toothis sewn to one end of the second right zipper tapethrough the sewing line. The second left zipper toothand the second right zipper toothcan be fittingly engaged to each other. One end of the left extension tapeis integrally woven with the first left zipper tapeand the second left zipper tape, making a “T” shape. Specifically, the one end of the left extension tapeis integrally woven with an end of the first left zipper tapefar from the first left zipper toothand an end of the second left zipper tapefar from the second left zipper tooth. Another end of the left extension tapeis configured to be sewn to bags, clothing, and other items (not shown in the figures). One end of the right extension tapeis integrally woven with the first right zipper tapeand the second right zipper tape, making a “T” shape. Specifically, the one end of the right extension tapeis integrally woven with an end of the first right zipper tapefar from the first right zipper toothand an end of the second right zipper tapefar from the second right zipper tooth. Another end of the right extension tapeis configured to be sewn to bags, clothing, and other items. The slider is used to enable the first left zipper toothand the first right zipper toothto be fittingly engaged or disengaged and to enable the second left zipper toothand the second right zipper toothto be fittingly engaged or disengaged. Specifically, in the present embodiment, the first left zipper tape, the first right zipper tape, the second left zipper tape, the second right zipper tape, the left extension tape, and the right extension tapeare all made of fabric. Preferably, the fabric has a certain degree of elasticity. Each of the first left zipper tooth, the first right zipper tooth, the second left zipper tooth, and the second right zipper toothis made of a spiral resin zipper tooth. Alternatively, each of the first left zipper tooth, the first right zipper tooth, the second left zipper tooth, and the second right zipper toothcan be made of metal or other materials in other embodiments, but is not limited herein.

The explosion-proof zipperhas the first left zipper toothsewn to the one end of the first left zipper tape, the second left zipper toothsewn to the one end of the second left zipper tape, the first right zipper toothsewn to the one end of the first right zipper tape, and the second right zipper toothsewn to the one end of the second right zipper tape. Additionally, the left extension tape, the first left zipper tape, and the second left zipper tapeare integrally formed so that the left extension tape, the first left zipper tape, and the second left zipper tapeare connected to form a T-shaped structure. The right extension tape, the first right zipper tape, and the second right zipper tapeare integrally, so that the right extension tape, the first right zipper tape, and the second right zipper tapeare connected to form a T-shaped structure. That is, the zipper teeth on the same side are not sewn on both sides of the same zipper tape through the same sewing line. In this way, the zipper tooth gaps of the zipper tooth on the same side are not on the same line. When a sharp object (not shown in the figures) pierces through the zipper tooth gap of the first left zipper tooth, it is more likely to pierce into the second left zipper toothor the zipper tape, providing the explosion-proof zipperwith excellent anti-puncture performance. Additionally, as the explosion-proof zipper includes the first zipperand the second zipperthat are independent from each other, it has excellent anti-explosion performance.

Optionally, referring to, in the present embodiment, the first left zipper toothis sewn to an outer side of the first left zipper tapethrough the, the first right zipper toothis sewn to an outer side of the first right zipper tapethrough the sewing line, the second left zipper toothis sewn to an outer side of the second left zipper tapethrough the sewing line, and the second right zipper toothis sewn to an outer side of the second right zipper tapethrough the sewing line.

Referring to, in the present embodiment, to further enhance the anti-puncture performance of the explosion-proof zipper, a tooth gap where the first left zipper toothis fittingly engaged to the first right zipper toothand a tooth gap where the second left zipper toothis fittingly engaged to the second right zipper toothare misaligned. Specifically, such configuration can cause that a width of the first left zipper tapeis different from a width of the second left zipper tape, and a width of the first right zipper tapeis different from a width of the second right zipper tape. If the zipper tooth sizes are the same, then the width of the first left zipper tapeplus the width of the first right zipper tapeshould be equal to the width of the second left zipper tapeplus the width of the second right zipper tape. Certainly, in other embodiments, the zipper tooth sizes can also differ, or it may not be necessary to make the widths equal, as long as the tooth gap of the first left and right zipper tooth are misaligned with the tooth gap of the second left and right zipper tooth, but is not limited herein.

Optionally, in one embodiment, a size of the first left zipper toothis different from a size of the second left zipper tooth, so that the zipper tooth gaps of the first zipperand the second zipperare easily staggered, and thus the majority of these gaps are not on the same line. Such configuration allows the sharp object, after piercing the gap of the first left zipper tooth, to more easily pierce into the second left zipper toothor its tape, providing the explosion-proof zipperwith between anti-puncture performance.

Referring toand, in the present embodiment, to allow the zipper to expand when used on bags or clothing, a width of the first zipperis greater than a width of the second zipper. That is, the width of the first left zipper tapeplus the width of the first right zipper tape, the width of the first left zipper tooth, and the width of the first right zipper toothis greater than the width of the second left zipper tapeplus the width of the second right zipper tape, the width of the second left zipper tooth, and the width of the second right zipper tooth. Thus, when more space is needed, the second zippercan be separated, and only the first zipperneeds to be zipped up. When no space expansion is required, both the first zipperand the second zippercan be zipped up to restore normalcy.

Optionally, referring to, in the present embodiment, to achieve the engagement or the disengagement of the first zipperand the second zipper, the slider includes a first sliderand a second slider. The first slideris for making the first left zipper toothand the first right zipper toothengaged or disengaged, and the second slideris for making the second left zipper toothand the second right zipper toothengaged or disengaged. The specific structure of the first sliderand the second slideris based on existing technology and will be not reiterated herein.

The present embodiment is similar to the first embodiment, with the difference being that the first left zipper toothis sewn to an inner side of the first left zipper tapethrough the sewing line, the first right zipper toothis sewn to an inner side of the first right zipper tapethrough the sewing line, the second left zipper toothis sewn to an inner side of the second left zipper tapethrough the sewing line, and the second right zipper toothis sewn to an inner side of the second right zipper tapethrough the sewing line. Such configuration prevents the teeth of the first zipperfrom directly facing items in the bag or package, reducing the collision between the teeth and the items. In addition, such configuration prevents the teeth of the second zipperfrom directly facing an outside world, reducing the collision between its teeth and external objects. This gives the explosion-proof zipperthe advantage of less tooth damage and lower risk of bursting.

The present embodiment is similar to the first embodiment, with the difference that the slider is a dual-layer slider, with a first layer used to make the first left zipper toothand the first right zipper toothengaged or disengaged, and a second layer used to make the second left zipper toothand the second right zipper toothengaged or disengaged. Such configuration allows a single slider to control the engagement or disengagement of the first zipperand the second zipper, making the operation of engaging or disengaging the explosion-proof zippermore convenient.

Due to the bag's curvature, an arc radius formed by the first zipperof the explosion-proof zipperis greater than an arc radius formed by the second zipper. Referring toand, in the present embodiment, to ensure the dual-layer slidercan smoothly and seamlessly engage the first zipperto the second zipperor disengage the first zipperfrom the second zipper, the first layer of the dual-layer slideris arranged in front of the second layer of the dual-layer slider, allowing the first zipperto be engagedly connected or separated at the bag's curves first, followed by the second zipper. Specifically, the dual-layer sliderhas, from top to bottom, a top plate, a middle plate, and a bottom platethat are arranged in parallel. The top plateis connected to the middle platethrough a first guide column, and the middle plateis connected to the bottom platethrough a second guide column. The top plate, the middle plate, and the first guide columnform the first layer of the dual-layer slider. The middle plate, the bottom plate, and the second guide columnform the second layer of the dual-layer slider. A front end of the bottom plateis arranged behind a front end of the first guide column. In this way, such configuration arranges the first layer of the dual-layer sliderin front of the second layer of the dual-layer slider.

Specifically, each of two sides of the top platehas a first top wingextending downward, each of two sides of an upper surface of the middle platehas a first guide flangematching with the first top wing, and each of two sides of a lower surface of the middle platehas a second top wingextending downward. Each of two sides of the bottom platehas a second guide flangematching with the second top wing. By means of the configuration, the first layer of the dual-layer slider, with the top platehaving the first top wings, the middle platehaving the first guide flanges, and the first guide column, is engaged to or disengaged from the first zipper. The second layer of the dual-layer slider, with the middle platehaving the second top wings, the bottom platehaving the second guide flange, and the second guide column, is engaged to or disengaged from the second zipper.

Referring to, the present embodiment is similar to the first embodiment, with the difference that the first zipperof the explosion-proof zipperalso includes a third left zipper toothsewn to an inner side of the first left zipper tape, and a third right zipper toothsewn to an inner side of the first right zipper tape.

Finally, it should be noted that the above embodiments are only to illustrate the technical solution of the present disclosure and are not limiting. Although the present disclosure has been described in detail with reference to these embodiments, those skilled in the art should understand that modifications or equivalent replacements of some or all of the technical features can still be made, without departing from the scope of the technical solutions described in these embodiments.