Light and thin plastic steel zipper

Abstract

The utility model provides a light and thin plastic steel zipper which comprises a cloth belt and a plurality of groups of plastic steel teeth, the plastic steel teeth are connected with the cloth belt, and the plurality of plastic steel teeth are distributed along the long edge direction of the cloth belt. According to the zipper structure, the plastic steel teeth are adopted, the fixing blocks and the sealing blocks are arranged at the top ends and the bottom ends of the plastic steel teeth respectively, the fixing blocks play a role in stable meshing between the adjacent teeth, the sealing blocks shield meshing gaps between the adjacent teeth, and therefore the sealing performance of the zipper structure is improved; not only is the tightness of meshing enhanced, but also the use of materials is reduced due to the shape characteristic, so that the teeth are lighter and thinner. The cloth belt comprises the ribs and the connecting cloth connected with the ribs, and the ribs are provided with the protruding points, so that the contact area and friction force between the ribs and the plastic steel teeth are effectively increased, the overall strength of the zipper is improved, and the zipper can bear larger tension.

Description

Technical Field

[0001] The utility model relates to the field of clothing accessories, in particular to a light and thin plastic-steel zipper. Background Art

[0002] Zippers used in clothing, luggage and other daily necessities mostly use ordinary plastic or metal (such as copper, aluminum, zinc alloy, etc.) as tooth materials.

[0003] Although ordinary plastic zippers are light, they often lack strength and durability. Due to the characteristics of plastic materials, conventional plastic-steel zippers are generally large in size, heavy in shape, and thick in thickness in order to achieve industry-related physical and chemical properties. Although metal materials are strong, they have high density, which increases the overall weight. In addition, the tooth structure of traditional metal zippers is relatively simple and lacks optimization for lightweight design. The connecting parts between the teeth may be too thick, or effective weight-reducing design is not adopted, resulting in difficulty in reducing the overall thickness and inconvenience in use.

[0004] Therefore, it is necessary to provide a light and thin plastic-steel zipper to solve the above technical problems. Utility Model Content

[0005] The utility model provides a light and thin plastic-steel zipper to solve the problem that the zippers in the prior art are not light and thin and the connecting parts between the teeth may be too thick.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a light and thin plastic-steel zipper, which includes:

[0007] cloth tape; and

[0008] Plastic-steel teeth are connected to the cloth belt, and the plastic-steel teeth are provided in a plurality of groups, and the plurality of plastic-steel teeth are distributed along the long side direction of the cloth belt;

[0009] Wherein, the plastic steel teeth include:

[0010] A fixing block is provided at the top end of the plastic steel tooth, one end of the fixing block is connected to the surface layer of the cloth belt; and

[0011] A sealing block is provided at the bottom end of the plastic steel tooth, one end of the sealing block is connected to the inner layer of the cloth belt, and the other end of the sealing block is connected to the other end of the fixing block;

[0012] The fixing block includes:

[0013] An engaging head, located at the front end of the engaging portion, for engaging and connecting with the engaging neck of the adjacent chain tooth;

[0014] an engaging neck portion, located at the middle end of the engaging portion, for tightly engaging with the engaging head portion of the adjacent chain element; and an engaging tail portion, located at the tail end of the engaging portion, for fixedly connecting with the zipper tape;

[0015] The sealing block comprises:

[0016] A sealing head is located at the front end of the sealing block, and covers the meshing head and the meshing neck. The meshing heads of adjacent chain teeth are tightly meshed, and the sealing head is triangular in shape;

[0017] A sealing tail portion is located at the tail end of the sealing block, the sealing tail portion is connected to one side of the sealing head portion, and the sealing tail portion covers the meshing tail portion;

[0018] Wherein, a first thinning surface is provided at the bottom end of the sealing head, and the distance between the first thinning surface and the sealing block gradually decreases as it moves away from the engaging head side;

[0019] The cloth belt includes a rib and a connecting cloth connected to the rib. The rib is arranged between the meshing tail and the sealing tail. A protruding point is arranged on the rib.

[0020] In the present invention, the cloth belt includes ribs and connecting cloth connected to the ribs;

[0021] A connecting groove and a first extension groove are provided between the meshing tail and the sealing tail. The connecting groove is located at the front end of the first extension groove close to the plastic steel tooth. One end of the first extension groove is connected to the connecting groove, and the other end of the first extension groove passes through the tail of the plastic steel tooth and extends. The height of the connecting groove is greater than the height of the first extension groove; the rib is engaged with the connecting groove, and one side of the connecting cloth is engaged with the first extension groove.

[0022] In the present invention, the end of the sealing tail away from the sealing head is provided with a second thinning surface, and the thickness of the sealing head away from the end of the sealing tail gradually decreases.

[0023] In the present invention, third thinning surfaces are provided on both sides of the sealing head, and the cross-sectional width of the sealing head on the side away from the fixing block gradually decreases.

[0024] The present invention further comprises a waterproof coating, which is arranged on the inner layer of the cloth belt.

[0025] In the utility model, the meshing tail is provided with a filling groove, and a coating layer is provided in the filling groove.

[0026] In the present invention, the front end of the engaging head is delayed compared to the front end of the sealing head.

[0027] In the utility model, a positioning block is provided at the bottom end of the fixing block, a positioning groove is provided at the top end of the sealing block, and the fixing block is connected to the positioning groove.

[0028] In the present invention, the ribs are provided in two groups, namely the first ribs and the second ribs;

[0029] The connecting fabric is provided with a first connecting portion and a second connecting portion, the first connecting portion connects the first rib and the second rib, and the second connecting portion is connected to the first rib and extends along the first extension groove;

[0030] There are two groups of connecting grooves, namely the first connecting groove and the second connecting groove. The first connecting groove and the second connecting groove are connected through the second extension groove. The first rib is embedded in the first connecting groove, the second rib is embedded in the second connecting groove, and the second connecting part is filled in the second extension groove.

[0031] In the present invention, the distance between adjacent plastic-steel teeth is 0.6 mm, the thickness ratio of the plastic-steel teeth to the cloth tape is 6:1, the thickness ratio of the plastic-steel teeth to the sealing block is approximately 2:1, the thickness ratio of the plastic-steel teeth to the fixed block is 1.8:1, and the thickness ratio of the sealing block to the fixed block is 4:5.

[0032] Compared with the prior art, the present invention has the following beneficial effects: a lightweight plastic-steel zipper of the present invention uses plastic-steel teeth, which are respectively located at the top and bottom ends of the plastic-steel teeth by designing a fixing block and a sealing block. The fixing block plays a role in stabilizing the meshing between adjacent teeth, and the sealing block blocks the meshing gap between adjacent teeth, thereby improving the sealing performance of the zipper structure. The sealing head is designed to be triangular, which not only helps to enhance the tightness of the meshing, but also reduces the use of materials due to its shape characteristics while maintaining the necessary strength. A first thinning surface is provided at the bottom end of the sealing head, so that the thickness of the sealing head away from the sealing tail gradually decreases. Without affecting the sealing and meshing functions, the thickness of the plastic-steel tooth material is reduced, thereby achieving lightweighting.

[0033] Furthermore, the cloth tape includes ribs and connecting cloth connected to the ribs. The ribs enhance the structural strength of the cloth tape, and the ribs are provided with raised points, which effectively increase the contact area and friction between the ribs and the plastic-steel teeth, thereby improving the overall strength of the zipper and enabling it to withstand greater tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the present invention.

[0035] Figure 1 This is a top view of the thin plastic-steel zipper according to the first embodiment of the present invention.

[0036] Figure 2 This is a bottom view of the thin plastic-steel zipper according to the first embodiment of the present invention.

[0037] Figure 3 This is a side view of the plastic steel teeth of the first embodiment of the present invention.

[0038] Figure 4 This is a front view of the plastic-steel teeth of the first embodiment of the present utility model.

[0039] Figure 5 This is a top view of the plastic-steel teeth of the first embodiment of the present invention.

[0040] Figure 6 This is a top view of a thin plastic-steel zipper according to a second embodiment of the present invention.

[0041] Figure 7 This is a side view of the plastic steel teeth of the second embodiment of the present invention.

[0042] Figure 8 This is a bottom view of a thin plastic-steel zipper according to a third embodiment of the present invention.

[0043] Figure 9 This is a side view of the plastic steel teeth of the third embodiment of the present invention.

[0044] Reference numerals:

[0045] First embodiment: 11. cloth tape; 111. rib; 1111. raised point; 112. textile fabric; 12. plastic steel teeth; 121. sealing block; 1211. sealing head; 12111. first thinning surface; 12112. third thinning surface; 1212. sealing tail; 12121. second thinning surface; 12122. fifth thinning surface; 1213. positioning groove; 122. fixing block; 1221. engaging head; 1222. engaging neck; 1223. engaging tail; 12231. fourth thinning surface; 1224. positioning block; 123. connecting groove; 124. first extension groove.

[0046] Second embodiment: 22231, filling groove; 225, coating layer.

[0047] Third embodiment: 31. Cloth belt; 311. First rib; 312. Second rib; 313. First connecting portion; 314. Second connecting portion; 32. Plastic steel teeth; 321. Sealing block; 3211. Sealing head; 3212. Sealing tail; 322. Fixing block; 3223. Engaging tail; 323. First connecting groove; 324. First extension groove; 325. Second connecting groove; 326. Second extension groove. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0049] In the figures, structurally similar elements are denoted by the same reference numerals.

[0050] The terms "first" and "second" in the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, nor as limiting the order of precedence.

[0051] Please refer to Figure 1 、 Figure 2 and Figure 3 ,in Figure 1 This is a top view of the thin plastic-steel zipper of the first embodiment of the present invention. Figure 2 This is a bottom view of the thin plastic-steel zipper of the first embodiment of the present invention. Figure 3 This is a side view of the plastic steel teeth of the first embodiment of the present invention.

[0052] The following is a preferred embodiment of a thin plastic-steel zipper provided by the present invention that can solve the above technical problems.

[0053] The preferred embodiment of the light and thin plastic-steel zipper provided by the present invention is: a light and thin plastic-steel zipper, which includes a cloth tape 11 and plastic-steel teeth 12; the plastic-steel teeth 12 are connected to the cloth tape 11, and the plastic-steel teeth 12 are provided in a plurality of groups, and the plurality of plastic-steel teeth 12 are distributed along the long side direction of the rib 111; wherein the plastic-steel teeth 12 include a fixing block 122 and a sealing block 121; the fixing block 122 is provided at the top end of the plastic-steel teeth 12, and one end of the fixing block 122 is connected to the surface layer of the cloth tape 11; the sealing block 121 is provided at the bottom end of the plastic-steel teeth 12, and one end of the sealing block 121 is connected to the inner layer of the cloth tape 11, and the other end of the sealing block 121 is connected to the other end of the fixing block 122.

[0054] The fixed block 122 in this embodiment includes an engaging head 1221, an engaging neck 1222 and an engaging tail 1223; the engaging head 1221 is located at the front end of the engaging portion, and the engaging head 1221 is used to engage and connect with the engaging neck 1222 of the adjacent chain tooth; the engaging neck 1222 is located at the middle end of the engaging portion, and the engaging neck 1222 is used to tightly engage with the engaging head 1221 of the adjacent chain tooth; the engaging tail 1223 is located at the tail end of the engaging portion, and the engaging tail 1223 is fixedly connected to the cloth tape 11.

[0055] The sealing block 121 includes a sealing head 1211 and a sealing tail 1212; the sealing head 1211 is located at the front end of the sealing block 121, and the sealing head 1211 covers the meshing head 1221 and the meshing neck 1222. The meshing heads 1221 of adjacent chain teeth are tightly meshed, and the sealing head 1211 is triangular; the sealing tail 1212 is located at the tail end of the sealing block 121, and the sealing tail 1212 is connected to one side of the sealing head 1211, and the sealing tail 1212 covers the meshing tail 1223.

[0056] In this embodiment, a first thinning surface 12111 is provided at the bottom end of the sealing head portion 1211 , and the thickness of the sealing head portion 1211 gradually decreases at an end away from the sealing tail portion 1212 .

[0057] Combine Figure 1 and Figure 2 The fabric tape 11 includes ribs 111 and a connecting fabric 112 connected to the ribs 111. The ribs 111 enhance the structural strength of the fabric tape 11 and define the connection between the fabric tape 11 and the teeth 12. The ribs 111 are positioned between the meshing tail 1223 and the sealing tail 1212. The ribs 111 are provided with raised points 1111, which increase the contact surface between the ribs 111 and the plastic-steel teeth 12, thereby enhancing the strength of the zipper.

[0058] The present invention discloses a lightweight plastic-steel zipper using plastic-steel as the material for its teeth 12. Plastic-steel is a lightweight and high-strength material. Compared to traditional metal zippers, plastic-steel significantly reduces overall weight while maintaining sufficient strength, which is the basis for achieving lightweight and thinness. A fixing block 122 and a sealing block 121 are located at the top and bottom of the plastic-steel teeth 12, respectively. The fixing block 122 stabilizes the meshing between adjacent teeth 12, while the sealing block 121 blocks the meshing gap between adjacent teeth, thereby improving the sealing performance of the zipper structure. The triangular design of the sealing head 1211 not only enhances the tightness of the meshing, but also reduces material usage due to its shape characteristics while maintaining the necessary strength. Furthermore, a first thinning surface 12111 is provided at the bottom end of the sealing head 1211, gradually reducing the thickness of the sealing head 1211 away from the sealing tail 1212. This reduces the thickness of the plastic-steel teeth 12 without affecting the sealing and meshing functions, thereby achieving lightweight design.

[0059] Furthermore, the cloth tape 11 includes a rib 111 and a connecting cloth 112 connected to the rib 111. The rib 111 enhances the structural strength of the cloth tape 11, and a protrusion 1111 is provided on the rib 111, which effectively increases the contact area and friction between the rib 111 and the plastic-steel teeth 12, thereby significantly improving the overall strength of the zipper, enabling it to withstand greater tension and more frequent use without being easily damaged.

[0060] The structure of the plastic steel teeth 12 in this embodiment is described in detail as follows:

[0061] Combine Figure 3 A connecting groove 123 and a first extension groove 124 are provided between the meshing tail portion 1223 and the sealing tail portion 1212. The connecting groove 123 is located near the front end of the first extension groove 124 near the plastic-steel tooth 12. One end of the first extension groove 124 communicates with the connecting groove 123, while the other end of the first extension groove 124 extends through the rear end of the plastic-steel tooth 12. The height of the connecting groove 123 is greater than that of the first extension groove 124. The rib 111 engages with the connecting groove 123, and one side of the connecting fabric 112 engages with the first extension groove 124. This strengthens the connection between the plastic-steel tooth 12 and the fabric tape 11. The interlocking structure allows the tooth 12 to be more firmly fixed to the fabric tape 11, while also improving the overall structural stability and durability of the zipper.

[0062] Combine Figure 4 In this embodiment, a positioning block 1224 is provided at the bottom of the fixing block 122, and a positioning groove 1213 is provided at the top of the sealing block 121. The fixing block 122 is connected to the positioning groove 1213. The design of the positioning block 1224 and the positioning groove 1213 makes the connection between the fixing block 122 and the sealing block 121 more precise and stable.

[0063] Combine Figure 5 In this embodiment, the front end of the meshing head 1221 is extended beyond the front end of the sealing head 1211 , and the meshing between the sealing heads 1211 of adjacent teeth 12 is more sealed.

[0064] like Figure 3 As shown, considering the problem of dry skin in winter and the easy scratching of hands by the right angles of conventional plastic-steel teeth, the present application further optimizes the structure of the plastic-steel teeth 12. A fourth thinning surface 12231 is provided on the side of the meshing tail 1223 away from the meshing head 1221, and the thickness of the meshing tail 1223 away from the meshing head 1221 gradually decreases. A fifth thinning surface 12122 is provided on the side of the sealing tail 1212 away from the sealing head 1211, and the thickness of the sealing tail 1212 away from the sealing head 1211 gradually decreases.

[0065] like Figure 1 and Figure 2 As shown, fine surface treatment has been performed on both sides of the plastic-steel teeth 12. The plastic-steel teeth 12 are provided with a fourth thinning surface 12231 and a fifth thinning surface 12122, which transform the original sharp right-angle edges into smooth bevels or rounded corners to reduce the risk of friction and scratches when in direct contact with the skin, thereby improving the user's comfort experience in cold seasons or daily use. This improvement also enhances the safety of the product.

[0066] The structure of the sealing block 121 in this embodiment is described as follows:

[0067] Combine Figure 4 A second thinning surface 12121 is provided at the end of the sealing tail 1212 away from the sealing head 1211, and the thickness of the sealing head 1211 away from the sealing tail 1212 gradually decreases. Without affecting the structural strength of the sealing block 121, the weight of the sealing block 121 is reduced, thereby achieving a lightweight design.

[0068] Third thinning surfaces 12112 are provided on both sides of the sealing head 1211 . The cross-sectional width of the sealing head 1211 away from the fixing block 122 gradually decreases, thereby further reducing the weight of the sealing head 1211 .

[0069] The structure of the cloth tape 11 in this embodiment is described below:

[0070] Combine Figure 2 The thin plastic-steel zipper in this embodiment also includes a waterproof coating (not shown in the figure), which improves the waterproof performance of the zipper. The waterproof coating is arranged on the inner layer of the cloth tape 11 to extend the service life of the waterproof coating.

[0071] like Figure 3As shown, in this embodiment, the shape of the protrusion 1111 can be designed to be hemispherical, conical, or other shapes that increase the contact area and facilitate injection molding to ensure a close fit with the plastic-steel teeth 12 and further enhance the connection strength. In this embodiment, high-strength, wear-resistant plastic or metal alloy can be selected as the material for the rib 111 to ensure sufficient structural strength and stability.

[0072] Raised points 1111 are evenly spaced along rib 111 to evenly distribute the force on tape 11 and enhance the overall durability of the zipper. These points are thermoplastically bonded to the plastic-steel teeth 12, ensuring the design of the plastic-steel teeth 12 matches the raised points 1111, including parameters such as tooth shape, pitch, and depth. This ensures precise engagement, minimizes gaps, and enhances sealing and smooth closing.

[0073] In addition, the connection between the connecting cloth 112 and the ribs 111 is connected by reinforced stitching technology, such as double-needle stitching, lock-edge processing or adding reinforcing tape, to enhance the strength and durability of the connection and prevent it from being untied due to long-term use or excessive stretching.

[0074] The size ratio of the thin plastic zipper in this embodiment is described as follows:

[0075] The distance between adjacent plastic-steel teeth 12 is 0.6 mm. The thickness ratio of the plastic-steel teeth 12 to the fabric tape 11 is 6:1, the thickness ratio of the plastic-steel teeth 12 to the sealing block 121 is approximately 2:1, the thickness ratio of the plastic-steel teeth 12 to the fixing block 122 is 1.8:1, and the thickness ratio of the sealing block 121 to the fixing block 122 is 4:5. In this embodiment, the overall thickness of the teeth 12 is 2.55 mm, which can be 2.6 mm ± 0.05 mm. The overall thinning of the teeth 12 improves the sewing experience and enhances the wrinkle resistance of the zipper. The thickness of the fabric tape 11 is 0.45 mm; the thickness of the sealing block 121 is 1.18 mm; and the thickness of the fixing block 122 is 1.42 mm.

[0076] The working principle of this utility model:

[0077] Opening and Closing Process: When the zipper slider is pulled, the slider inside the slider passes through the engaging head 1221 and engaging neck 1222 of each plastic-steel tooth 12 in sequence. The precise design of the engaging heads 1221 and necks 1222 ensures that adjacent teeth 12 tightly mesh and maintain a stable connection. As the slider moves forward, the engaging head 1221 of the preceding tooth 12 slides into the engaging neck 1222 of the following tooth 12, completing the opening and closing motion.

[0078] This completes the working process of the thin plastic-steel zipper of the preferred embodiment.

[0079] The plastic-steel teeth 12 are made of lightweight, high-strength plastic-steel material and include a fixing block 122 and a sealing block 121. The fixing block 122 ensures stable meshing between adjacent teeth 12, while the sealing block 121 blocks meshing gaps and improves sealing. The choice of plastic-steel material ensures both strength and lightweight.

[0080] The fixing block 122 includes an engaging head 1221, an engaging neck 1222, and an engaging tail 1223. The engaging head 1221 engages with the engaging neck 1222 of the adjacent element, while the engaging neck 1222 tightly engages with the engaging head 1221 of the adjacent element, ensuring smooth opening and closing of the zipper. The engaging tail 1223 is fixedly connected to the tape 11, providing stable support.

[0081] The sealing block 121 includes a sealing head 1211 and a sealing tail 1212. The sealing head 1211 is designed to be triangular, covering the meshing head 1221 and the meshing neck 1222, enhancing the tightness of the meshing and reducing material usage, improving the occlusal structure of the teeth, and thinning the teeth. The sealing tail 1212 covers the meshing tail 1223, further improving the sealing performance. The thinning design of the sealing head 1211 and the tail achieves lightweight without affecting the structural strength. The design of the sealing block 121 ensures that the meshing gap between adjacent teeth 12 is effectively blocked. The triangular design of the sealing head 1211 and the connection with the sealing tail 1212 form a continuous sealing surface to prevent external substances (such as water, dust, etc.) from entering the interior of the zipper. In addition, the thinning design of the sealing head 1211 and the tail achieves lightweight while ensuring sealing.

[0082] The fabric belt 11 is composed of ribs 111 and connecting cloth 112. The ribs 111 enhance the structural strength of the fabric belt 11 and define the connection position of the teeth 12. The connecting cloth 112 is connected to the plastic steel teeth 12 through a chimeric structure to improve the overall stability.

[0083] The waterproof coating provided in the inner layer of the tape 11 improves the waterproof performance of the zipper. When the zipper is closed, the waterproof coating and the sealing block 121 work together to form an effective waterproof barrier to protect the internal items from external moisture intrusion.

[0084] The second embodiment of the thin plastic-steel zipper of the present invention is provided below:

[0085] Combine Figure 6 and Figure 7 On the basis of the first embodiment, the meshing tail 1223 in this embodiment is provided with a filling groove 22231, which reduces the weight of the tail of the tooth 12, and a coating layer 225 is provided in the filling groove 22231. The coating layer 225 can display the identification information of the zipper, thereby improving the practicality of the zipper structure.

[0086] Furthermore, the top surface of the coating layer 225 is flush with the top surface of the fixing block 122 , which maintains the flatness of the zipper surface and avoids appearance defects or inconvenience in use caused by protrusions or depressions of the coating layer 225 .

[0087] The third embodiment of the zipper of the present invention is provided below:

[0088] Combine Figure 8 and Figure 9 The plastic-steel teeth 32 are connected to the cloth belt 31. The plastic-steel teeth 32 are provided in several groups, and the several plastic-steel teeth 32 are distributed along the long side direction of the rib; the plastic-steel teeth 32 include a fixing block 322 and a sealing block 321; the fixing block 322 is provided at the top of the plastic-steel teeth 32, and one end of the fixing block 322 is connected to the surface layer of the cloth belt 31; the sealing block 321 is provided at the bottom of the plastic-steel teeth 32, and one end of the sealing block 321 is connected to the inner layer of the cloth belt 31, and the other end of the sealing block 321 is connected to the other end of the fixing block 322. The fixed block 322 in this embodiment includes an engaging head, an engaging neck and an engaging tail 3223; the engaging head is located at the front end of the engaging portion, and the engaging head is used to engage and connect with the engaging neck of the adjacent chain tooth; the engaging neck is located at the middle end of the engaging portion, and the engaging neck is used to tightly engage with the engaging head of the adjacent chain tooth; the engaging tail 3223 is located at the tail end of the engaging portion, and the engaging tail 3223 is fixedly connected to the cloth tape 31.

[0089] The sealing block 321 includes a sealing head 3211 and a sealing tail 3212. The sealing head 3211 is located at the front end of the sealing block 321 and covers the meshing head and meshing neck. The meshing heads of adjacent coupling elements are tightly meshed. The sealing head 3211 is triangular in shape. The sealing tail 3212 is located at the rear end of the sealing block 321 and is connected to one side of the sealing head 3211. The sealing tail 3212 covers the meshing tail 3223. In this embodiment, the bottom end of the sealing head 3211 is provided with a first thinning surface, and the thickness of the sealing head 3211 gradually decreases towards the end away from the sealing tail 3212.

[0090] The sealing head 3211 is triangular in shape and covers the engaging head and neck. This design not only enhances sealing but also reduces material usage, achieving lightweighting. A first thinning surface is provided at the bottom end of the sealing head 3211, gradually reducing the thickness of the sealing head 3211 away from the sealing tail 3212. This further reduces the weight of the sealing block 321 and optimizes its shape for a smoother engagement process.

[0091] A connecting groove and a first extension groove 324 are provided between the meshing tail 3223 and the sealing tail 3212. The connecting groove is located at the front end of the first extension groove 324 close to the plastic-steel tooth 32. One end of the first extension groove 324 is connected to the connecting groove, and the other end of the first extension groove 324 passes through the tail of the plastic-steel tooth 32 and extends. The height of the connecting groove is greater than the height of the first extension groove 324.

[0092] The cloth tape 31 includes a rib and a connecting cloth connected to the rib. The rib is arranged between the meshing tail 3223 and the sealing tail 3212. A protrusion is provided on the rib. The protrusion improves the contact surface between the rib and the plastic steel teeth 32, thereby enhancing the strength of the zipper.

[0093] In this embodiment, there are two groups of ribs, namely the first rib 311 and the second rib 312; the protruding point in this embodiment is arranged on the side of the second rib 312 away from the first rib 311, and the connecting cloth is provided with a first connecting part 313 and a second connecting part 314. The first connection connects the first rib 311 and the second rib 312, and the second connecting part 314 is connected to the first rib 311 and extends along the first extension groove 324; there are two groups of connecting grooves, namely the first connecting groove 323 and the second connecting groove 325. The first connecting groove 323 and the second connecting groove 325 are connected through the second extension groove 326. The first rib 311 is embedded in the first connecting groove 323, the second rib 312 is embedded in the second connecting groove 325, and the second connecting part 314 is filled in the second extension groove 326.

[0094] The fabric tape 31 utilizes a dual-rib design consisting of a first rib 311 and a second rib 312, connected by a first connecting portion 313 and a second connecting portion 314. This not only enhances the structural strength of the fabric tape 31 but also provides more connection points, further strengthening the connection between the fabric tape 31 and the plastic-steel teeth 32. The knitting density of the first connecting portion 313 is lower than that of the second connecting portion 314. This design reduces the thickness of the connection between the fabric tape 31 and the plastic-steel teeth 32, thereby achieving lightweighting. Furthermore, the presence of the two ribs ensures the stability of the connection, preventing the reduction in knitting density from compromising the strength of the connection.

[0095] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims.

Claims

1. A thin plastic-steel zipper, characterized in that: include: cloth belt; as well as Plastic-steel teeth are connected to the cloth belt, and the plastic-steel teeth are provided in a plurality of groups, and the plurality of plastic-steel teeth are distributed along the long side direction of the cloth belt; Wherein, the plastic steel teeth include: A fixing block is provided at the top end of the plastic steel tooth, one end of the fixing block is connected to the surface layer of the cloth belt; and A sealing block is provided at the bottom end of the plastic steel tooth, one end of the sealing block is connected to the inner layer of the cloth belt, and the other end of the sealing block is connected to the other end of the fixing block; The fixing block includes: An engaging head, located at the front end of the engaging portion, for engaging and connecting with the engaging neck of the adjacent chain tooth; an engaging neck portion, located at the middle end of the engaging portion, for tightly engaging with the engaging head portion of the adjacent coupling element; and The meshing tail is located at the tail end of the meshing portion and is used for fixed connection with the zipper tape; The sealing block comprises: A sealing head is located at the front end of the sealing block, and covers the meshing head and the meshing neck. The meshing heads of adjacent chain teeth are tightly meshed, and the sealing head is triangular in shape; A sealing tail portion is located at the tail end of the sealing block, the sealing tail portion is connected to one side of the sealing head portion, and the sealing tail portion covers the meshing tail portion; Wherein, a first thinning surface is provided at the bottom end of the sealing head, and the distance between the first thinning surface and the sealing block gradually decreases as it moves away from the engaging head side; The cloth belt includes a rib and a connecting cloth connected to the rib. The rib is arranged between the meshing tail and the sealing tail. A protruding point is arranged on the rib.

2. The thin plastic-steel zipper according to claim 1, characterized in that: A connecting groove and a first extension groove are provided between the meshing tail and the sealing tail. The connecting groove is located at the front end of the first extension groove close to the plastic steel tooth. One end of the first extension groove is connected to the connecting groove, and the other end of the first extension groove passes through the tail of the plastic steel tooth and extends. The height of the connecting groove is greater than the height of the first extension groove; the rib is engaged with the connecting groove, and one side of the connecting cloth is engaged with the first extension groove.

3. The thin plastic-steel zipper according to claim 1, characterized in that: The sealing tail portion is provided with a second thinning surface at one end away from the sealing head portion, and the thickness of the sealing head portion gradually decreases at one end away from the sealing tail portion.

4. The thin plastic-steel zipper according to claim 1, characterized in that: The sealing head is provided with third thinning surfaces on both sides, and the cross-sectional width of the sealing head on the side away from the fixing block gradually decreases.

5. The thin plastic-steel zipper according to claim 1, characterized in that: It also includes a waterproof coating, which is arranged on the inner layer of the cloth belt.

6. The light and thin plastic-steel zipper according to claim 1, characterized in that: The meshing tail is provided with a filling groove, and a coating layer is provided in the filling groove.

7. The thin plastic-steel zipper according to claim 1, characterized in that: The front end of the engaging head is delayed relative to the front end of the sealing head.

8. The thin plastic-steel zipper according to claim 1, characterized in that: A positioning block is provided at the bottom end of the fixing block, a positioning groove is provided at the top end of the sealing block, and the fixing block is connected to the positioning groove.

9. The thin plastic-steel zipper according to claim 1, characterized in that: The ribs are provided in two groups, namely the first ribs and the second ribs; The connecting fabric is provided with a first connecting portion and a second connecting portion, the first connecting portion connects the first rib and the second rib, and the second connecting portion is connected to the first rib and extends along the first extension groove; There are two groups of connecting grooves, namely the first connecting groove and the second connecting groove. The first connecting groove and the second connecting groove are connected through the second extension groove. The first rib is embedded in the first connecting groove, the second rib is embedded in the second connecting groove, and the second connecting part is filled in the second extension groove.

10. The thin plastic-steel zipper according to claim 1, characterized in that: The distance between adjacent plastic-steel teeth is 0.6 mm, the thickness ratio of the plastic-steel teeth to the cloth tape is 6:1, the thickness ratio of the plastic-steel teeth to the sealing block is approximately 2:1, the thickness ratio of the plastic-steel teeth to the fixed block is 1.8:1, and the thickness ratio of the sealing block to the fixed block is 4:5.

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