Zipper teeth and zipper
By designing a rectangular fixing part and an avoidance surface structure for the zipper teeth, the interference and friction problems of traditional zipper teeth during bending are solved, achieving smooth bending and efficient engagement of the zipper, which is suitable for a variety of application scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JKJ ZIPPER TECH CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-06-02
AI Technical Summary
Traditional zippers are prone to interference between adjacent teeth when bent, resulting in increased frictional resistance or even tooth jamming.
The zipper teeth are designed with a rectangular fixing part, with a clearance surface to avoid tooth interference, and an arc surface added to the meshing part to improve meshing smoothness. Plastic steel material is used to combine lightweight and wear resistance.
It improves the zipper's bendability and engagement efficiency, reduces frictional resistance and interference risk, extends service life, and adapts to various bending requirements.
Smart Images

Figure CN224306893U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of zippers, and in particular to a zipper tooth and a zipper. Background Technology
[0002] As a connecting component widely used in clothing, bags, outdoor equipment, and other fields, the structural design of the teeth of a zipper directly affects its performance. In traditional zippers, adjacent teeth are prone to direct contact when the zipper is bent, leading to interference, increased frictional resistance, and even tooth jamming. Utility Model Content
[0003] Therefore, it is necessary to provide a zipper tooth and zipper to address the above problems, reducing interference between the teeth and making the zipper bend more smoothly.
[0004] This utility model first provides a zipper tooth, including an engaging part and a fixing part connected to the engaging part. The fixing part includes four planes adjacent to the engaging part, the four planes are connected to each other to form a rectangle, and a clearance surface is provided between each pair of adjacent planes.
[0005] In the zipper teeth provided by this embodiment of the invention, the rectangular fixing part provides a stable structural foundation, facilitating the installation of the zipper teeth and the zipper strip. The design of the avoidance surface ensures that there is no interference between two adjacent zipper teeth when the zipper is bent, guaranteeing smooth bending of the zipper and significantly improving the zipper's bendability; the avoidance surface design also avoids interference between the zipper teeth and the zipper pull, ensuring smooth and unobstructed movement of the zipper teeth during operation.
[0006] In one embodiment, the avoidance surface is a plane.
[0007] This design makes the flat avoidance surface easy to process and inexpensive, while providing a stable avoidance effect. It ensures that the zipper teeth maintain an appropriate distance from the zipper pull during movement, avoiding collisions or friction. At the same time, it improves the zipper's flexibility to a certain extent, preventing interference between adjacent teeth when the zipper is bent.
[0008] In one embodiment, the avoidance surface is a curved surface.
[0009] This design allows the curved surface of the avoidance surface to provide a smoother rotation trajectory when the zipper bends, reducing the frictional resistance between the zipper teeth. At the same time, the curved structure causes adjacent zipper teeth to form point contact rather than surface contact during bending, further reducing the risk of interference.
[0010] In one embodiment, the thickness of the zipper teeth is 2.4mm to 2.6mm.
[0011] With this design, compared to the commonly used 3.5mm zipper teeth in existing technology, the zipper teeth within this thickness range, after being thinned, can meet the design requirements of lightweighting and miniaturization while ensuring sufficient strength and rigidity.
[0012] In one embodiment, the thickness of the zipper teeth is 2.5 mm.
[0013] With this design, the 2.5mm thickness is the optimal size after optimization, achieving a good balance between strength, rigidity, and weight, which can meet the usage requirements of most zippers.
[0014] In one embodiment, the end of the engaging portion away from the fixing portion has an arc surface.
[0015] This curved surface design allows for smoother engagement of the zipper teeth with other teeth, reducing friction and wear, and improving engagement efficiency and reliability. The curved surface also helps guide the zipper teeth to mesh correctly, reducing the risk of engagement failure or damage due to misalignment. Furthermore, the curved surface provides a better transition when the zipper is bent, reducing interference between adjacent teeth and further improving the zipper's flexibility. In addition, the curved surface design effectively prevents the zipper teeth from snagging on clothing fabrics, reducing the likelihood of burrs during production and improving the zipper's compatibility with garment fabrics.
[0016] In one embodiment, the radius of the arc surface is 0.9 mm to 1.0 mm.
[0017] With this configuration, the curved surface within this radius can provide good meshing smoothness and wear resistance while ensuring sufficient meshing strength, making it suitable for most common zipper applications.
[0018] In one embodiment, the engaging portion and the fixing portion are integrally formed.
[0019] This design eliminates gaps between components, improves structural strength and durability, extends the lifespan of zipper teeth, simplifies the manufacturing process, and reduces production costs.
[0020] In one embodiment, the zipper teeth are made of plastic steel.
[0021] This design combines the lightweight and easily moldable properties of plastic with the high strength and wear resistance of steel, making the zipper teeth both lightweight and durable, suitable for most common zipper applications.
[0022] This utility model also provides a zipper, including the zipper teeth mentioned above.
[0023] With this design, the zipper not only has a reliable meshing function, but also achieves excellent bendability through the optimized design of the zipper teeth, making the zipper smoother and more flexible during use, and able to adapt to various bending requirements. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of the zipper teeth provided in this application.
[0026] Figure 2 A front view of the zipper teeth provided in this application.
[0027] Reference numerals: 1. Engaging part; 11. Arc surface; 2. Fixing part; 21. Clearance surface; 22. Plane. Detailed Implementation
[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.
[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0032] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.
[0033] As a connecting component widely used in clothing, bags, outdoor equipment, and other fields, the structural design of the teeth of a zipper directly affects its performance. In traditional zippers, adjacent teeth are prone to direct contact when the zipper is bent, leading to interference, increased frictional resistance, and even tooth jamming.
[0034] To solve the above problems, such as Figure 1 As shown, this utility model provides a zipper tooth and a zipper, which reduces interference between the teeth and makes the zipper bend more smoothly.
[0035] As shown in Figure 1, this application first provides a zipper tooth. The zipper tooth includes an engaging portion 1 and a fixing portion 2 connected to the engaging portion 1. The fixing portion 2 includes four planes 22 adjacent to the engaging portion 1. The four planes 22 are interconnected to form a rectangle, and a clearance surface 21 is provided between each pair of adjacent planes 22. The four planes 22 are interconnected to form a rectangle, which may include a rectangle or a square.
[0036] In the zipper teeth provided by this embodiment of the invention, the rectangular fixing part 2 provides a stable structural foundation, facilitating the installation of the zipper teeth and the zipper strip. The design of the avoidance surface 21 ensures that there is no interference between two adjacent zipper teeth when the zipper is bent, guaranteeing smooth bending of the zipper and significantly improving the zipper's bendability; the design of the avoidance surface 21 also avoids interference between the zipper teeth and the zipper pull, ensuring that the zipper teeth move smoothly and without obstruction during operation.
[0037] like Figure 1As shown, in one embodiment, the avoidance surface 21 is a plane. This design makes the planar avoidance surface 21 easy to process, inexpensive, and provides a stable avoidance effect, ensuring that the zipper teeth maintain an appropriate distance from the zipper pull during movement, avoiding collisions or friction. At the same time, it improves the zipper's flexibility to a certain extent, preventing interference between adjacent teeth when the zipper is bent.
[0038] In another implementation, the avoidance surface 21 can be designed as a folded structure, which combines multiple planes to achieve more complex avoidance requirements and further optimize the zipper's bendability.
[0039] In another embodiment, the avoidance surface 21 is a curved surface. The avoidance surface 21 can be a circular arc surface, an elliptical arc surface, or other smoothly transitioned curved surface. The curved design of the avoidance surface 21 provides a smoother rotation trajectory when the zipper is bent, reducing frictional resistance between the zipper teeth. Simultaneously, the curved structure causes adjacent zipper teeth to form point contact rather than surface contact during bending, further reducing the risk of interference.
[0040] Among them, the avoidance surface 21 is concave to the zipper teeth.
[0041] In another embodiment, the clearance surface 21 protrudes outward relative to the zipper teeth.
[0042] like Figure 1 As shown, in one embodiment, the thickness H of the zipper teeth is 2.4mm to 2.6mm, where H can be 2.4mm, 2.41mm, 2.42mm...2.49mm, 2.5mm, 2.51mm, 2.52mm...2.59mm, or 2.6mm. This design, compared to the commonly used 3.5mm zipper teeth in the prior art, thinner zipper teeth within this thickness range can meet the design requirements of lightweighting and miniaturization while ensuring sufficient strength and rigidity.
[0043] Preferably, the thickness of the zipper teeth is 2.5mm. This setting, with a thickness of 2.5mm, is an optimized optimal size that achieves a good balance between strength, rigidity, and weight, meeting the usage requirements of most zippers.
[0044] In another implementation, the thickness of the zipper teeth can be adjusted according to specific application requirements and material properties. For example, for zippers with high strength requirements, the thickness can be appropriately increased; while for applications with high lightweight requirements, the thickness can be reduced while ensuring strength, achieving the best balance between strength and flexibility.
[0045] like Figure 2As shown, in one embodiment, the end of the engaging portion 1 away from the fixing portion 2 is provided with an arc surface 11. This arrangement allows the engaging portion 1 to engage more smoothly with other teeth, reducing friction and wear, and improving engagement efficiency and reliability. The arc surface 11 also helps guide the correct engagement of the zipper teeth, reducing the risk of engagement failure or damage due to misalignment. Simultaneously, the arc surface 11 provides a better transition when the zipper is bent, reducing interference between adjacent teeth and further improving the zipper's bendability. Furthermore, the arc surface 11 effectively prevents the zipper teeth from snagging on the garment fabric, reducing the likelihood of burrs forming during production and improving the zipper's compatibility with garment fabrics.
[0046] The arc surface 11 can be a circular arc surface, an elliptical arc surface, or other smoothly transitioned curved surface. The radius of the arc surface 11 can also be adjusted according to the specifications of the zipper and the meshing requirements to achieve the best meshing performance and bendability.
[0047] like Figure 2 As shown, in one embodiment, the radius R of the arc surface 11 is 0.9mm to 1.0mm. R can be 0.9mm, 0.91mm, 0.92mm...0.99mm, 1.0mm. This configuration ensures that the arc surface 11 within this radius range provides good engagement smoothness and wear resistance while maintaining sufficient engagement strength, making it suitable for most conventional zipper applications.
[0048] In one embodiment, the engaging part 1 and the fixing part 2 are integrally formed. This integrally formed structure eliminates the connection gap between components, improves structural strength and durability, extends the service life of the zipper teeth, and simplifies the manufacturing process while reducing production costs.
[0049] In one embodiment, the zipper teeth are made of plastic steel. This design combines the lightweight and easily moldable properties of plastic with the high strength and wear resistance of steel, making the zipper teeth both lightweight and durable, suitable for most common zipper applications.
[0050] In another implementation, zipper teeth can be made of a variety of materials to suit different scenarios: metal materials, with their high strength and corrosion resistance, are suitable for heavy-duty or harsh environments such as industrial equipment and outdoor bags; nylon materials are lightweight, low-temperature resistant, and quiet, making them suitable for clothing zippers, especially for clothing in extremely cold regions and high-end fashion; composite materials, through filler modification, can achieve weight reduction or functional enhancements such as conductivity and weather resistance to meet the special needs of aviation, electronic equipment, and other fields.
[0051] This utility model also provides a zipper including the aforementioned zipper teeth. With this configuration, the zipper not only possesses a reliable meshing function, but also achieves excellent bendability through the optimized design of the zipper teeth, making the zipper smoother and more flexible during use, and able to adapt to various bending requirements.
[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0053] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.
Claims
1. A fastener tooth characterized by, include: The engagement part (1) and the fixing part (2) connected to the engagement part (1) include four planes (22) adjacent to the engagement part (1), the four planes (22) are connected to each other in a rectangle, and a clearance surface (21) is provided between each two adjacent planes (22).
2. The fastener teeth according to claim 1, wherein, The avoidance surface (21) is a plane.
3. The fastener teeth according to claim 1, wherein, The avoidance surface (21) is a curved surface.
4. The zipper teeth according to claim 1, characterized in that, The thickness of the zipper teeth is 2.4mm to 2.6mm.
5. The zipper teeth according to claim 4, characterized in that, The thickness of the zipper teeth is 2.5mm.
6. The zipper teeth according to claim 1, characterized in that, The engagement part (1) has an arc surface (11) at one end away from the fixing part (2).
7. The zipper teeth according to claim 6, characterized in that, The radius of the arc surface (11) is 0.9mm~1.0mm.
8. The zipper teeth according to claim 1, characterized in that, The engaging part (1) and the fixing part (2) are integrally formed.
9. The zipper teeth according to claim 1, characterized in that, The zipper teeth are made of plastic steel.
10. A zipper, characterized in that, Includes zipper teeth according to any one of claims 1-9.