Zipper for travel bags

Abstract

We provide zippers for travel bags. [Solution] The travel bag zipper comprises a first shell, a second shell, and an elastic zipper. The first shell and the second shell are joined together. The elastic zipper has two or more opposing tape bodies 30 and teeth 40. Each tape body is separately connected to the first shell and the second shell and has one or more transverse weft units 31 and multiple longitudinal warp threads 32. The weft units have elastic weft threads 311. The elastic weft threads are bent along the length direction of the warp threads and are woven alternately with the leading and trailing ends of the warp threads. The teeth are arranged on the elastic weft threads. The elastic weft threads provide good elasticity to the tape body, allowing the zipper to open and close more smoothly. At the same time, when the slider passes through curves or non-straight sections, the slider's sliding is hindered, preventing the teeth from disengaging.

Description

Technical Field

[0001] The present invention relates to the manufacturing technology of travel backpacks, and more particularly to fasteners for travel backpacks.

Background Art

[0002] A fastener is a fastening member that joins or separates objects by engaging teeth arranged like teeth, and has high convenience in opening and closing, as well as high safety, reliability, and durability. In addition, since a fastener can join or separate objects according to the usage situation and maintain the fastening effect in a stable state at the same time, it is widely used in clothing, bags, tents, etc.

[0003] Specifically, fasteners are applied to various fields such as daily life related to people, aerospace, military equipment, medical equipment, etc. In the fashion-related industry, fasteners are often used not only for openings of trousers, skirts, and jackets, but also for opening and closing parts of various types of bags. In the industry related to outdoor supplies, fasteners are used for fastening tent members.

[0004] In conventional fasteners for travel backpacks, since the cloth part of the fastener has no elasticity, when the slider passes through the curved or non-linear part of the travel backpack, the cloth part of the fastener is overly stretched, which hinders the sliding of the slider and often causes the engaging teeth to deviate. Therefore, there is room for improvement.

[0005] In other words, when the slider passes through the curved or non-linear part of the travel backpack, the inelastic cloth part of the fastener is overly stretched, which hinders the sliding of the slider and easily causes the deviation of the engaging teeth. This is the problem of conventional fasteners for travel backpacks, that is, the problem to be solved by the present invention.

Summary of the Invention

Problems to be Solved by the Invention

[0006] In view of the aforementioned drawbacks, the main objective of this invention is to provide a travel bag zipper that not only exhibits relatively good elasticity and can slide smoothly, but also prevents teeth from coming loose. [Means for solving the problem]

[0007] To solve the aforementioned problems, the travel bag zipper comprises a first shell, a second shell, and an elastic zipper. The first and second shells are joined together. The elastic zipper has two or more opposing tape bodies and teeth. Each tape body is separately connected to the first and second shells and has one or more transverse weft units and multiple longitudinal warp threads. The weft units have elastic weft threads. The elastic weft threads are curved along the length direction of the warp threads and are woven alternately with the leading and trailing ends of the warp threads. The teeth are positioned on the elastic weft threads.

[0008] More specifically, because the weft unit is made of elastic material, it not only provides good elasticity to the entire zipper but also responds effectively to the opening, closing, and compression of the suitcase, thus improving flexibility during use. Since the elastic weft and warp threads are woven alternately, it improves the abrasion resistance and sealing performance of the zipper, prevents the zipper from breaking with frequent use, and ensures the sealing of the shell. In other words, the above design not only allows the zipper to be pulled and opened more smoothly but also maintains stable opening and closing operation even with suitcases that are relatively heavy or have an irregular shape.

[0009] In relatively preferable cases, the weft unit of an elastic fastener may have one or more non-elastic wefts. The non-elastic weft is positioned between the elastic weft and the teeth, and is woven alternately with the leading and trailing ends of the warp threads along the length of the warp, while simultaneously connecting the bent portions of the elastic weft alternately with the teeth. In other words, the bent portions of the non-elastic weft alternately connect the U-turn portions of the elastic weft and the teeth, forming a tight structure. The elastic weft provides the necessary elasticity, allowing the fastener to accommodate various sizes. The non-elastic weft increases the rigidity of the fastener, ensuring elasticity while simultaneously suppressing excessive bending and unstable situations, improving convenience during use. The design of alternately connecting the non-elastic weft with the teeth creates a tighter bond between the teeth and the weft, improving the durability and smoothness of opening and closing the fastener, and protecting against tooth displacement or damage during use.

[0010] In relatively preferable cases, the teeth of an elastic fastener and the non-elastic weft are connected to each other by sewing. Connecting the teeth and the non-elastic weft by sewing effectively increases the stability of the teeth and simultaneously reduces the risk of the teeth coming loose during sliding. In other words, the sewing connection method effectively improves the tensile strength of the entire structure, allowing it to withstand greater tension and maintain stability under high pressure or high load conditions.

[0011] In relatively favorable cases, the inelastic weft threads of the elastic fastener alternately pass through multiple warp threads to form a left inelastic U-turn section on the left and a right inelastic U-turn section on the right. The left and right inelastic U-turn sections are woven alternately. The fastener teeth are sewn into the right inelastic U-turn section with a sewing machine. In summary, the U-turn structure of the inelastic weft threads strengthens the tensile strength of the fastener, and sewing the fastener teeth into the right inelastic U-turn section with a sewing machine improves the stability and durability of the teeth.

[0012] In relatively preferable cases, the elastic fastener has an inelastic edge guard between the elastic weft and the fastener teeth. The inelastic edge guard is connected to the fastener teeth on one side and to the elastic weft on the other. More specifically, the edge guard forms a good bridge by being connected to the fastener teeth on one side and to the elastic weft on the other. The inelastic edge guard effectively stabilizes the connection between the elastic weft and the fastener teeth, thereby preventing the fastener from deforming or loosening during use. The inelastic edge guard firmly supports the connection between the elastic weft and the fastener teeth, thereby tightly connecting and stabilizing them.

[0013] In relatively preferable cases, the elastic weft of an elastic fastener has a spandex thread and a double-twist polyester thread wrapped around the outer wall of the spandex thread. The double-twist polyester thread wrapped around the spandex thread strengthens the structure of the elastic weft, improving the overall durability and abrasion resistance of the fastener. Furthermore, the double-twist polyester thread wrapped around the spandex thread increases the structural strength of the elastic weft and maintains the elasticity of the spandex thread in a stable state, thus avoiding excessive or insufficient elasticity. Using a double-twist polyester thread makes the entire elastic weft smoother and stronger, which can reduce jamming of the fastener during opening and closing.

[0014] In a relatively favorable case, the multiple warp threads of the elastic fastener are arranged from left to right. The elastic weft thread alternately passes through the leading and trailing ends of the multiple warp threads from left to right, winding its way to form a right-hand elastic U-turn section. Subsequently, the elastic weft thread alternately passes through the leading and trailing ends of the multiple warp threads from right to left, winding its way to form a left-hand elastic U-turn section. Subsequently, the elastic weft thread again alternately passes through the leading and trailing ends of the multiple warp threads from left to right, winding its way to form a right-hand elastic U-turn section. Repeating the above steps to the end knits the final knot. In other words, because the elastic weft thread alternately winds its way, the tension distribution of the fastener becomes uniform during the weaving process, effectively avoiding damage and instability due to excessive stretching or deformation in any part.

[0015] In relatively favorable cases, the teeth of an elastic fastener consist of a root and teeth. The root is connected to the tape body. The teeth are arranged to interlock, thereby producing the opening and closing function of the fastener.

[0016] In relatively preferable cases, elastic fasteners also have a slider. The slider is positioned between two opposing tape bodies, with its teeth interlocking, thereby creating the opening and closing function of the fastener.

[0017] In summary, the elastic weft provides good elasticity to the tape body, allowing the zipper to maintain its overall shape and structural stability even when pulled or compressed, and preventing excessive deformation and breakage. When pulling to open and close the zipper, the elasticity of the travel bag zipper allows for smoother operation. At the same time, when the slider passes through curves or non-straight sections, its movement is hindered, preventing the teeth from disengaging. Furthermore, because the elastic weft and warp threads are woven alternately, the structure of the tape body is tight and strong.

[0018] The detailed structure, features, assembly, and method of use of the travel bag zipper according to this invention will be clarified through the detailed description of the embodiments below. Furthermore, it should be understood by anyone with common sense in the field of this invention that the following detailed description and the embodiments presented herein are merely examples for explaining this invention and cannot limit the scope of the claims of this invention. [Brief explanation of the drawing]

[0019] [Figure 1] This is a perspective view showing a zipper for a travel bag according to the first embodiment of the present invention. [Figure 2] This is a schematic diagram showing the structure of an elastic zipper for a travel bag according to the first embodiment of the present invention. [Figure 3] This is a schematic diagram showing the structure of an elastic zipper for a travel bag according to a second embodiment of the present invention. [Figure 4] FIG. 1 is a schematic view showing the structure of an elastic fastener of a travel bag fastener according to a third embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

[0020] Hereinafter, a travel bag fastener according to the present invention will be described based on the drawings. Note that the technical features of the present invention are not limited to the description of the following embodiments. In the specification, explanations and terms related to the technology should be understandable to those with common sense in the field related to the present invention.

[0021] In this specification, "connection" includes a broad meaning. For example, in addition to fixed connection, detachable connection, and integral connection, it also includes mechanically or electrically connecting, directly connecting, or indirectly connecting through an intermediate medium. For those skilled in the art, the specific meaning of the above terms disclosed according to the embodiments of the present invention can be understood according to the specific situation.

[0022] In this specification, unless otherwise specified and limited, when the first feature is "above" or "below" the second feature, it means that the first feature and the second feature are in contact with each other or the first feature and the second feature are indirectly in contact with each other through an intermediate medium. Further, when the first feature is "above", "upward", and "uppermost" of the second feature, it may mean that the first feature is directly above or obliquely above the second feature. Or it may simply mean that the first feature is at a higher level than the second feature. When the first feature is "below", "directly below", or "right below" the second feature, it may mean that the first feature is directly below or obliquely below the second feature. Or it may simply mean that the first feature is at a lower level than the second feature.

[0023] In this specification, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable way in any one or more embodiments or examples. Furthermore, those skilled in the art related to the technology of the present invention can combine or associate different embodiments or examples described in this specification and the features of different embodiments or examples without conflict with each other.

[0024] (First Embodiment) As shown in FIG. 1, the fastener for a travel bag according to the first embodiment of the present invention includes a first shell 1 and a second shell 2 that are connected facing each other, and an elastic fastener 3 that is separately connected to the first shell 1 and the second shell 2 and meshes with each other.

[0025] As shown in FIG. 1, the first shell 1 and the second shell 2 are combined to form a travel bag.

[0026] As shown in Figure 2, the elastic fastener 3 has two or more opposing tape bodies 30, teeth 40, and a slider 70. Each tape body 30 has one or more transverse weft units 31 and multiple longitudinal warp threads 32. The weft units 31 have elastic weft threads 311. The elastic weft threads 311 are bent along the length direction of the warp threads 32 and are woven alternately with the leading and trailing ends of the warp threads 32. The teeth 40 are positioned on the elastic weft threads 311. The slider 70 is used to open and close the fastener. More specifically, the elastic weft threads 311 provide good elasticity to the tape body 30, so that the fastener can maintain the overall shape and structural stability even when pulled or compressed, and will not deform excessively and break. When pulling to open and close the fastener, the elasticity of the elastic fastener 3 allows the fastener to open and close more smoothly. At the same time, when the slider 70 passes through a bend or non-straight section, the fabric portion of the zipper is excessively pulled, which hinders the sliding of the slider 70 and prevents the teeth from disengaging. In addition, since the elastic weft threads 311 and warp threads 32 are woven alternately, the structure of the tape body 30 is tight and strong.

[0027] The elastic weft 311 of the elastic fastener 3 has a spandex yarn and a double-twist polyester yarn wrapped around the outer wall of the spandex yarn.

[0028] The multiple warp threads 32 of the elastic fastener 3 are arranged in a line from left to right. The elastic weft thread 311 alternately passes through the leading and trailing ends of the multiple warp threads 32 from left to right, winding its way to form a right elastic U-turn section 315. Subsequently, the elastic weft thread 311 alternately passes through the leading and trailing ends of the multiple warp threads 32 from right to left, winding its way to form a left elastic U-turn section 316. Subsequently, the elastic weft thread 311 again alternately passes through the leading and trailing ends of the multiple warp threads 32 from left to right, winding its way to form a right elastic U-turn section 315. Repeating the above steps to the end will knit the final knot. In other words, because the elastic weft thread 311 alternately winds its way, it maintains a stable connection between the elastic weft thread 311 and the warp threads 32, giving the fabric relatively good transverse elasticity.

[0029] The tape teeth 40 consist of a root portion 41 and a tooth portion 42. The root portion 41 is connected to the tape body 30. The tooth portions 42 are arranged to interlock.

[0030] The slider 70 is positioned between two opposing tape bodies 30, and is positioned so as to engage with the teeth 40 of the tape bodies 30.

[0031] (Second Embodiment) Figure 3 is a schematic diagram showing a zipper for a travel bag according to a second embodiment of the present invention. The differences from the embodiment described above are as follows.

[0032] In the second embodiment, the weft unit 31 of the elastic fastener 3 further has one or more non-elastic wefts 312. The non-elastic wefts 312 are positioned between the elastic wefts 311 and the teeth 40, and are woven alternately with the leading and trailing ends of the warp threads 32 along the length direction of the warp threads 32, while simultaneously connecting the swaying portions of the elastic wefts 322 and the teeth 40 alternately. More specifically, the non-elastic wefts 312 alternately connect the teeth 40 and the elastic wefts 311, and at the same time securely fix the teeth, thereby reducing the risk of the teeth 40 loosening or deviating due to external force, increasing the reliability and service life of the fastener, and ensuring that the teeth of the teeth 40 are aligned. When the slider 70 passes through curves or non-straight sections, the elastic wefts 311 can prevent the slider 70 from being hindered. In the second embodiment, the teeth 40 and the non-elastic wefts 312 are connected to each other by sewing. The inelastic weft threads 312 alternately pass through multiple warp threads 32 to form a left inelastic U-turn section 313 on the left side and a right inelastic U-turn section 314 on the right side. The left inelastic U-turn section 313 and the right inelastic U-turn section 314 are woven alternately. The teeth 40 are sewn into the right inelastic U-turn section 314 with a sewing machine, thereby improving the stability and durability of the elastic fastener 3. Furthermore, sewing the teeth 40 into the right inelastic U-turn section 314 with a sewing machine securely fixes the teeth 40 to the tape body 30 and prevents them from deviating from the tape body 30.

[0033] (Third embodiment) Figure 4 is a schematic diagram showing a zipper for a travel bag according to the third embodiment of the present invention. The differences from the embodiments described above are as follows.

[0034] In the third embodiment, the elastic fastener 3 has an inelastic edge protection member 50 between the elastic weft 311 and the fastener teeth 40. One side of the inelastic edge protection member 50 is connected to the fastener teeth 40, and the other side is connected to the elastic weft 311. More specifically, the inelastic edge protection member 50 is an inelastic member that covers the edge. The fastener teeth 40 are positioned to fit into the side of the inelastic edge protection member 50 that is farther away from the elastic weft 311. The elastic weft 311 and the inelastic edge protection member 50 are connected to each other by a sewing machine. The inelastic edge protection member 50 supports the fastener teeth 40, increases the connection strength between the fastener teeth 40 and the tape body 30, and at the same time prevents the fastener teeth 40 from loosening or disengaging due to external forces, thereby improving the overall stability of the fastener.

[0035] As stated above, the present invention is not limited in any way to the embodiments described above, and can be implemented in various forms without departing from the spirit of the invention. [Explanation of Symbols]

[0036] 1: First Shell 2: Second Shell 3: Elastic fastener 30: Tape body 31: Weft Unit 311: Elastic warp thread 312: Inelastic weft yarn 313: Left inelastic U-turn area 314: Right inelastic U-turn area 315: Right elastic U-turn area 316: Left elastic U-turn area 32: Warp threads 40: Dental 41: Root 42: Teeth 50: Inelastic edge protection member 60: Sewing thread 70: Slider

Claims

1. Equipped with a first shell, a second shell and an elastic fastener, The first shell and the second shell are joined together. The elastic fastener has two or more opposing tape bodies and teeth, each tape body is separately connected to the first shell and the second shell, and has one or more transverse weft units and a plurality of longitudinal warp threads, the weft units have elastic weft threads, the elastic weft threads are bent along the length direction of the warp threads and are woven alternately with the leading and trailing ends of the warp threads, and the teeth are arranged on the elastic weft threads, characterized in that it is a fastener for a travel bag.

2. The weft unit of the elastic fastener further comprises one or more non-elastic wefts, the non-elastic wefts being positioned between the elastic wefts and the teeth, bending along the length direction of the warp threads and alternately weaving with the leading and trailing ends of the warp threads, and simultaneously alternately connecting the bent portions of the elastic wefts and the teeth, as described in claim 1 for a travel bag fastener.

3. The travel bag zipper according to claim 2, characterized in that the teeth of the elastic zipper and the non-elastic weft thread are connected to each other by a sewing machine.

4. The travel bag zipper according to claim 3, characterized in that the non-elastic weft threads of the elastic zipper alternately pass through a plurality of warp threads to form a left non-elastic U-turn portion on the left side and a right non-elastic U-turn portion on the right side, the left non-elastic U-turn portion and the right non-elastic U-turn portion are woven alternately, and the teeth are sewn into the right non-elastic U-turn portion with a sewing machine.

5. The elastic fastener has an inelastic edge protective member between the elastic weft and the teeth, wherein one side of the inelastic edge protective member is connected to the teeth and the other side is connected to the elastic weft, as described in claim 1 for a travel bag fastener.

6. The travel bag zipper according to claim 1, characterized in that the elastic weft of the elastic zipper has spandex yarn and double-twisted polyester yarn wrapped around the outer wall of the spandex yarn.

7. The zipper for a travel bag according to claim 1, characterized in that the multiple warp threads of the elastic zipper are arranged in a line from left to right, the elastic weft thread alternately passes through the leading and trailing ends of the multiple warp threads from left to right and bends to form a right elastic U-turn section, the elastic weft thread alternately passes through the leading and trailing ends of the multiple warp threads from right to left and bends to form a left elastic U-turn section, the elastic weft thread again alternately passes through the leading and trailing ends of the multiple warp threads from left to right and bends to form a right elastic U-turn section, and after repeating the above steps to the end, a finishing knot is knitted.

8. The zipper for a travel bag according to claim 1, characterized in that the teeth of the elastic zipper consist of a root portion and a tooth portion, the root portion is connected to the tape body, and the tooth portion is arranged to interlock.

9. The elastic fastener further has a slider, the slider is positioned between two opposing tape bodies and interlocks with the teeth of the two tape bodies, as described in claim 1 for a travel bag fastener.

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