Magnetic zipper and preparation method thereof

Abstract

The invention relates to the technical field of zippers, in particular to a magnetic attraction zipper and a preparation method thereof.The magnetic attraction zipper comprises an insertion tube, an insertion base and a cloth tape, the cloth tape is provided with a first through groove, the cloth tape is divided into two symmetrical sections, the cloth tape is further provided with a second through groove perpendicular to the first through groove, and each section of the cloth tape is provided with a magnet; the two magnets are located on the two opposite sides of the second through groove respectively, the socket is fixedly installed at the tail end of one section of the cloth belt, the insertion pipe is fixedly installed at the tail end of the other section of the cloth belt, the socket and the insertion pipe completely wrap the two magnets respectively, a containing groove is formed in one side of the socket, the insertion pipe can be inserted into the containing groove, and the two magnets can attract each other. Due to the fact that the magnet is completely packaged in the socket and the insertion tube and is not exposed, the magnet is prevented from falling off due to long-term use or impact of external force, corrosion or abrasion caused by contact between the magnet and the external environment is prevented, durability of the zipper is remarkably improved, and the service life of the zipper is remarkably prolonged.

Description

Technical Field

[0001] This application relates to the field of zipper technology, and in particular to a magnetic zipper and its preparation method. Background Technology

[0002] A zipper, also known as a chain lock, is a common portable closure device consisting of two fabric strips with interlocking teeth and a sliding zipper pull. By sliding the zipper pull, the teeth can be closed (engaged) or opened (disengaged), thus quickly and efficiently connecting or separating two fabric edges or openings of other items.

[0003] A zipper has a tube and a socket fixed to opposite sides of the end of a fabric tape. Each side of the tube and socket has a slot containing a magnet, which is sealed by a locking plate at the slot opening. To close the zipper, the tube is first inserted into the socket, where magnetic attraction secures them together. Pulling the zipper pull engages the fabric tape. However, over time, the locking plate can easily detach from the slot, causing the magnets to fall out. This affects the stability of the tube and socket closure, potentially rendering the zipper unusable and reducing its overall lifespan. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this application is to provide a magnetic zipper and its manufacturing method, which solves the problem that during long-term use, the card plate easily detaches from the placement slot, causing the magnet to fall off, which in turn affects the stability of the closure of the insertion tube and socket, potentially causing the zipper to malfunction and reducing its overall service life.

[0005] The above-mentioned objective of this application is achieved through the following technical solution: a magnetic zipper, including a tube, a socket, a magnet, and a zipper. A first through groove is provided on the zipper tape, dividing the zipper tape into two symmetrical sections. A second through groove perpendicular to the first through groove is also provided on the zipper tape. A magnet is provided on each section of the zipper tape, with the two magnets located on opposite sides of the second through groove. The socket is fixedly installed on the end of one section of the zipper tape, and the tube is fixedly installed on the end of the other section of the zipper tape. The socket and the tube completely cover the two magnets. A receiving groove is provided on one side of the socket, into which the tube can be inserted, and the two magnets can attract each other.

[0006] Furthermore, each of the two magnets has a slot on one side, and the slots of the two magnets are respectively engaged with the opposite side of the second through slot.

[0007] Furthermore, a third through groove is provided on the zipper tape, which is perpendicular to the first through groove, and the third through groove is connected to the second through groove.

[0008] Furthermore, a fourth through groove is provided on the zipper tape, which is perpendicular to the first through groove. The fourth through groove is connected to the second through groove, which is located between the third and fourth through grooves. The widths of the third, second, and fourth through grooves increase sequentially.

[0009] Furthermore, a buckle is fixedly installed on the top of the insertion tube, and a slot is opened on the top surface of the socket, located on the top surface of the receiving groove, with the buckle engaging in the slot.

[0010] Furthermore, a limiting block is fixedly installed on the side of the insertion tube near the socket, and a limiting groove is opened on the side of the socket near the insertion tube. The limiting groove is located below the receiving groove, and the limiting block abuts against the limiting groove.

[0011] Furthermore, a positioning groove is provided on the side of the socket near the insertion tube, and it is connected to the limiting groove, with one side of the insertion tube abutting against the positioning groove.

[0012] Furthermore, a method for preparing a magnetic zipper, applied to any one of the above technical solutions, includes the following steps: S1: Apply adhesive to the predetermined area of ​​the zipper tape and create a first through groove in the adhesive area; S2: A second through groove is made in the adhesive application area, and the second through groove is perpendicular to the first through groove; S3: A third through groove is made in the adhesive application area. The third through groove is perpendicular to the first through groove and is connected to the second through groove. S4: A fourth through groove is made in the adhesive area. The fourth through groove is perpendicular to the first through groove and is connected to the second through groove, and the second through groove is located between the third through groove and the fourth through groove. S5: Demagnetize the two magnets and machine a slot on one side of each magnet. Attach the two magnets with the slots to the opposite sides of the second through slot of the zipper tape adhesive section, and position the magnets between the third and fourth through slots. S6: Place the adhesive area of ​​the zipper tape containing the magnet into the injection mold used to form the tube and socket. Fix the tape in the injection mold with positioning pins. The tube and socket are formed as one piece by injection molding, and the two magnets are completely covered. S7: Magnetize the magnets in the injection-molded tubes and sockets.

[0013] In summary, this application includes at least one of the following beneficial technical effects: When in use, the plug tube is brought close to the socket's groove. At this time, the two magnets, which are completely enclosed by the socket and the plug tube respectively, attract each other and generate magnetic force, so that the plug tube and the socket close quickly and reliably. This magnetic structure is not only easy to operate, but also enhances the stability of the connection. In addition, since the magnets are completely encapsulated inside the socket and the plug tube, with no exposed parts, it avoids the magnets from falling off due to long-term use or external impact, and also prevents them from oxidation or corrosion caused by contact with the external environment, thus significantly improving the durability and service life of the zipper.

[0014] This structure allows for the positioning of the zipper tape to the magnet before injection molding, eliminating the need for a positioning pin in the injection mold during the injection molding process. Since no mold positioning pin is required for magnet positioning, the surface of the injection-molded socket and insert is free of holes, preventing the magnet from being exposed to the outside environment through holes. This effectively prevents oxidation and corrosion due to contact with air or moisture, improving the product's sealing performance and durability, and extending the overall lifespan of the zipper.

[0015] Through a multi-slot collaborative design (such as the increasing width of the third and fourth slots and the natural positioning and limiting effect formed by the slotted magnet insertion into the adhesive part of the zipper tape), the magnet can be accurately positioned by an automatic magnet installation machine without external tools. This avoids the operation of using injection mold positioning pins to position the magnet, reduces human error, and significantly improves assembly efficiency and consistency. After injection molding, the magnet is completely encased inside the tube and socket, with no exposed holes (such as avoiding holes left by positioning pins), effectively preventing the magnet from oxidizing, falling off, or wearing due to exposure, thus improving the zipper's sealing performance, corrosion resistance, and overall service life. Demagnetization treatment ensures that there is no magnetic interference during the injection molding process, guaranteeing molding quality. The integrated injection molding design reduces assembly steps and lowers production costs. At the same time, the slot structure simplifies the positioning requirements of the injection mold, improving the production yield and scalability. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the embodiment; Figure 2 This is a schematic diagram of the overall structure without conduits and sockets; Figure 3 This is a schematic diagram of the overall structure of the zipper tape; Figure 4 This is a diagram showing the separation between the insertion tube and the socket; Figure 5 This is another perspective view of the separation between the insertion tube and the socket; Figure 6 This is a schematic diagram of the structure of a magnet.

[0017] Reference numerals: 1. Insertion tube; 11. Buckle; 12. Limiting block; 2. Socket; 21. Receptacle; 22. Bayonet; 23. Limiting groove; 24. Positioning groove; 3. Fabric tape; 31. First through groove; 32. Second through groove; 33. Third through groove; 34. Fourth through groove; 4. Magnet; 41. Magnet slot. Detailed Implementation

[0018] The present application will be further described in detail below with reference to the accompanying drawings.

[0019] Example, refer to Figures 1-6 A magnetic zipper includes a tube 1, a socket 2, and a zipper tape 3. The zipper tape 3 has a first through groove 31 that divides it into two symmetrical sections. The zipper tape 3 also has a second through groove 32 that is perpendicular to the first through groove 31. Each section of the zipper tape 3 is provided with a magnet 4, with the two magnets 4 located on opposite sides of the second through groove 32. The socket 2 is fixedly installed on the end of one section of the zipper tape 3, and the tube 1 is fixedly installed on the end of the other section of the zipper tape 3. The socket 2 and the tube 1 completely cover the two magnets 4. The socket 2 has a receiving groove 21 on one side, into which the tube 1 can be inserted, and the two magnets 4 can attract each other. When in use, the insertion tube 1 is brought close to the receiving groove 21 of the socket 2. At this time, the two magnets 4, which are completely enclosed by the socket 2 and the insertion tube 1 respectively, attract each other and generate magnetic attraction, so that the insertion tube 1 and the socket 2 close quickly and reliably. This magnetic attraction structure is not only convenient to operate, but also enhances the stability of the connection. In addition, since the magnets 4 are completely encapsulated inside the socket 2 and the insertion tube 1, with no exposed parts, it is not only to prevent the magnets 4 from falling off due to long-term use or external impact, but also to prevent oxidation or corrosion caused by contact with the external environment, thereby significantly improving the durability and service life of the zipper.

[0020] Each of the two magnets 4 has a slot 41 on one side, and the slots 41 of the two magnets 4 are respectively engaged with the opposite sides of the second through slot 32. During initial installation, the sides of the two magnets 4 with the slots 41 are respectively engaged with the opposite sides of the second through slot 32. This structure allows for pre-positioning of the magnets 4 before injection molding, eliminating the need for positioning pins in the injection mold to fix the magnets 4 during injection molding. Since no positioning pins are needed, there are no holes left on the surface of the socket 2 and the insertion tube 1 after injection molding, preventing the magnets 4 from being exposed to the outside environment through holes. This effectively prevents oxidation and corrosion due to contact with air or moisture, improves the sealing and durability of the product, and extends the service life of the entire zipper.

[0021] The zipper tape 3 has a third through groove 33, which is perpendicular to the first through groove 31 and connects to the second through groove 32. When installing the magnet 4, the slot 41 of the magnet 4 is first aligned and inserted into the third through groove 33, and then it is slid along the through groove to the designated position within the second through groove 32, thus completing the positioning and installation of the magnet 4. This structural design avoids complex operations such as prying or bending the zipper tape 3 during installation, significantly improving the convenience and efficiency of magnet 4 assembly, while reducing the risk of component damage due to improper operation.

[0022] A fourth through groove 34 is provided on the zipper tape 3, perpendicular to the first through groove 31. The fourth through groove 34 connects to the second through groove 32, which is located between the third through groove 33 and the fourth through groove 34. The widths of the third through groove 33, the second through groove 32, and the fourth through groove 34 increase sequentially. When installing the magnet 4, it is installed into the second through groove 32, and one side of the magnet abuts against the side wall of the fourth through groove 34. Since the width of the second through groove 32 is greater than that of the fourth through groove 34, the fourth through groove 34 acts as a limit in this structure, effectively preventing the magnet 4 from sliding downwards during installation or subsequent processing. This limiting mechanism ensures the accurate positioning of the magnet 4 before injection molding, avoiding injection molding deviations or incomplete coverage caused by magnet 4 displacement, thereby improving the consistency and reliability of product molding and ensuring the assembly quality and performance of the magnetic zipper.

[0023] A buckle 11 is fixedly installed on the top of the insertion tube 1, and a slot 22 is opened on the top surface of the socket 2, located on the top surface of the receiving groove 21. The buckle 11 is engaged in the slot 22. When connecting the socket 2 and the insertion tube 1, the buckle 11 on the top of the insertion tube 1 slides along the top surface of the receiving groove 21 of the socket 2; when the buckle 11 moves to the position of the slot 22, it will automatically engage due to the attraction of the magnet and generate a clear feedback of being in place. At this time, the insertion tube 1 and the socket 2 form a mechanical interlock, and the magnets 4 inside both attract each other, achieving a stable magnetic and mechanical dual connection. This structure not only improves the guidance and operation feel during connection, but also effectively enhances the tensile strength and reliability after the zipper is closed, avoiding accidental loosening due to external force or vibration.

[0024] A limiting block 12 is fixedly installed on the side of the insertion tube 1 near the socket 2. A limiting groove 23 is formed on the side of the socket 2 near the insertion tube 1. The limiting groove 23 is located below the receiving groove 21, and the limiting block 12 abuts against the limiting groove 23. When the insertion tube 1 and the socket 2 are connected, the insertion tube 1 is gradually inserted into the receiving groove 21 of the socket 2 until it is closed. At this time, the limiting block 12 on the insertion tube 1 is embedded in the corresponding limiting groove 23 of the socket 2. Combined with the aforementioned snap-fit ​​engagement of the buckle 11 and the latch 22, the limiting block 12 and the limiting groove 23 further form a second mechanical interlocking structure. This double interlocking mechanism significantly enhances the connection stability between the insertion tube 1 and the socket 2, effectively resists lateral or longitudinal external forces, prevents accidental loosening due to uneven force or frequent opening and closing during use, and improves the reliability and durability of the zipper under dynamic load.

[0025] A positioning groove 24 is provided on the side of the socket 2 near the insertion tube 1, and it is connected to the limiting groove 23. One side of the insertion tube 1 abuts against the positioning groove 24. During the docking process between the insertion tube 1 and the socket 2, one side of the insertion tube 1 is first guided into the positioning groove 24 of the socket 2. The positioning groove 24 serves as a guide and initial positioning, ensuring that the insertion tube 1 is initially aligned and constrained before being inserted into the receiving groove 21, effectively preventing skewing or misalignment during docking. This structure reduces the difficulty of alignment, improves the smoothness and accuracy of assembly operations, and reduces component wear caused by misalignment, further enhancing the reliability of the connection and the service life of the product.

[0026] A method for manufacturing a magnetic zipper includes the following steps: S1: Applying adhesive to a predetermined area of ​​the zipper tape 3, and creating a first through groove 31 in the adhesive area; S2: Creating a second through groove 32 in the adhesive area, the second through groove 32 being perpendicular to the first through groove 31; S3: Creating a third through groove 33 in the adhesive area, the third through groove 33 being perpendicular to the first through groove 31 and connected to the second through groove 32; S4: Creating a fourth through groove 34 in the adhesive area, the fourth through groove 34 being perpendicular to the first through groove 31 and connected to the second through groove 32, with the second through groove 32 positioned between the third through groove 33 and the fourth through groove 34; S5: Applying adhesive to both... Each magnet 4 is demagnetized, and a slot 41 is machined on one side of each magnet 4. The two magnets 4 with the slot 41 are respectively attached to the opposite sides of the second through groove 32 of the adhesive part of the zipper tape 3, and the magnets 4 are located between the third through groove 33 and the fourth through groove 34; S6: The adhesive area of ​​the zipper tape 3 with the magnet is placed into the injection mold for forming the insertion tube 1 and the socket 2. The zipper tape 3 is fixed in the injection mold by the positioning pin. The insertion tube 1 and the socket 2 are integrally formed by injection molding, and the two magnets 4 are completely covered; S7: The magnets 4 in the injection molded insertion tube 1 and socket 2 are magnetized.

[0027] In manufacturing this zipper, adhesive is first applied to a predetermined area of ​​the zipper tape 3 to enhance the bonding force during subsequent injection molding. Then, a first through-slot 31, a second through-slot 32, a third through-slot 33, and a fourth through-slot 34 are sequentially formed. These through-slots can be created using a punching die. These through-slots employ a vertical and interconnected design (e.g., the second through-slot 32 is perpendicular to the first through-slot 31, and the third and fourth through-slots 34 are both connected to the second through-slot 32), forming a symmetrical and layered network of slots. The magnet 4 is then demagnetized (to avoid magnetic interference during injection molding), and a slot 41 is machined. Utilizing the opposing sides of the second through-slot 32 and the limiting effect of the third and fourth through-slots 33 and 34, the magnet 4 is precisely secured in the predetermined position without the need for additional fasteners. The adhesive-coated portion of the zipper tape 3 with the magnet 4 is fixed in the injection mold. Injection molding integrates the insert 1 and the socket 2, simultaneously completely covering the magnet 4 and the adhesive-coated portion of the zipper tape 3, achieving structural encapsulation and functional integration. Through the collaborative design of multiple slots (such as the increasing width of the third slot 33 and the fourth slot 34 forming a natural limit), the magnet 4 can be accurately positioned without external tools during installation, avoiding the operation of positioning pins for injection molds, reducing human error, and significantly improving assembly efficiency and consistency. After injection molding, the magnet 4 is completely enclosed inside the insert 1 and socket 2, with no exposed holes (such as avoiding holes left by positioning pins), effectively preventing the magnet 4 from oxidizing, falling off, or wearing due to exposure, and improving the zipper's sealing performance, corrosion resistance, and overall service life. Demagnetization treatment ensures that there is no magnetic interference during the injection molding process, guaranteeing molding quality. The integrated injection molding design reduces assembly steps and lowers production costs. At the same time, the slot structure simplifies the positioning requirements of injection molds, improving production yield and scalability.

[0028] Working principle: When using the device, the insertion tube 1 is brought close to the receiving groove 21 of the socket 2, so that one side of the insertion tube 1 abuts against the positioning groove 24 of the socket 2, and the buckle 11 is engaged in the bayonet 22, and the limiting block 12 on the insertion tube 1 abuts against the limiting groove 23 of the socket 2, forming a mechanical double locking. Both the insertion tube 1 and the socket 2 have a magnet 4. Through magnetic attraction, the insertion tube 1 is stably connected to the receiving groove 21 of the socket 2, which improves the stability of the device. The two magnets 4 are completely enclosed by the insertion tube 1 and the socket 2, so that the magnets 4 are not exposed to the outside world, avoiding the magnets 4 from falling off due to long-term use or external impact, and preventing oxidation or corrosion caused by contact with the external environment, thereby significantly improving the durability and service life of the zipper.

[0029] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A magnetic zipper, comprising a tube (1), a socket (2), and a zipper tape (3), characterized in that: A first through groove (31) is provided on the zipper tape (3) to divide the zipper tape (3) into two symmetrical sections; The zipper tape (3) is also provided with a second through groove (32) that is perpendicular to the first through groove (31); Each segment of the zipper tape (3) is provided with a magnet (4), and the two magnets (4) are respectively located on opposite sides of the second through groove (32); The socket (2) is fixedly installed on the end of one section of the fabric strip (3), and the insertion tube (1) is fixedly installed on the end of the other section of the fabric strip (3). The socket (2) and the insertion tube (1) completely cover the two magnets (4) respectively; The socket (2) has a groove (21) on one side, the insertion tube (1) can be inserted into the groove (21), and the two magnets (4) can attract each other.

2. The magnetic zipper according to claim 1, characterized in that: Each of the two magnets (4) has a slot (41) on one side, and the slots (41) of the two magnets (4) are respectively engaged with the opposite side of the second through slot (32).

3. A magnetic zipper according to claim 1, characterized in that: The zipper tape (3) has a third through groove (33) which is perpendicular to the first through groove (31) and the third through groove (33) is connected to the second through groove (32).

4. A magnetic zipper according to claim 3, characterized in that: The zipper tape (3) has a fourth through groove (34) which is perpendicular to the first through groove (31). The fourth through groove (34) is connected to the second through groove (32). The second through groove (32) is located between the third through groove (33) and the fourth through groove (34). The widths of the third through groove (33), the second through groove (32) and the fourth through groove (34) increase sequentially.

5. A magnetic zipper according to claim 1, characterized in that: The top of the insertion tube (1) is fixedly installed with a buckle (11), and the top surface of the socket (2) is provided with a slot (22) and is located on the top surface of the receiving groove (21). The buckle (11) is engaged in the slot (22).

6. A magnetic zipper according to claim 1, characterized in that: A limiting block (12) is fixedly installed on the side of the insertion tube (1) near the socket (2). A limiting groove (23) is opened on the side of the socket (2) near the insertion tube (1). The limiting groove (23) is located below the receiving groove (21). The limiting block (12) abuts against the limiting groove (23).

7. A magnetic zipper according to claim 6, characterized in that: The socket (2) has a positioning groove (24) on the side near the insertion tube (1) and is connected to the limiting groove (23). One side of the insertion tube (1) abuts against the positioning groove (24).

8. A method for preparing a magnetic zipper, applied to the magnetic zipper described in any one of claims 1-7, characterized in that, Includes the following steps: S1: Apply adhesive to the predetermined area of ​​the zipper tape (3) and open the first through groove (31) in the adhesive area. S2: A second through groove (32) is opened in the adhesive area, and the second through groove (32) is perpendicular to the first through groove (31); S3: A third through groove (33) is opened in the adhesive area. The third through groove (33) is perpendicular to the first through groove (31) and is connected to the second through groove (32). S4: A fourth through groove (34) is opened in the adhesive area. The fourth through groove (34) is perpendicular to the first through groove (31) and connected to the second through groove (32). The second through groove (32) is located between the third through groove (33) and the fourth through groove (34). S5: Demagnetize the two magnets (4) and process a slot (41) on one side of each magnet (4). Attach the two magnets (4) with the slot (41) to the opposite sides of the second through slot (32) of the adhesive part of the zipper tape (3), and position the magnets (4) between the third through slot (33) and the fourth through slot (34). S6: Place the adhesive area of ​​the zipper tape (3) and magnet (4) into the injection mold for forming the tube (1) and socket (2), fix the tape (3) in the injection mold by positioning pin, and make the tube (1) and socket (2) integrally formed by injection molding, and completely cover the two magnets (4). S7: Magnetize the magnets (4) in the injection-molded tube (1) and socket (2).

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