Waterproof zipper with anti-dropping teeth
By incorporating limiting ribs and a combination of flexible magnetic protrusions and grooved soft steel strips between the teeth of the waterproof zipper, the problems of easy tooth detachment and poor waterproof performance of the waterproof zipper are solved, achieving higher structural stability and waterproof performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN HONGCHENG ZIPPER RIBBON CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-12
AI Technical Summary
Existing waterproof zippers are prone to tooth breakage during use, have limited waterproofing effect, especially in scenarios with frequent opening and closing or high stress, and lack structural stability and waterproof performance.
Limiting ribs are set between adjacent teeth, a flexible magnetic protrusion is set at the front end of the first waterproof cloth strip, and a waterproof cover cloth with a grooved soft steel strip is set at the front end of the second waterproof cloth strip. The connection stability and waterproof performance are enhanced by magnetic adsorption and structural fit.
It effectively prevents the teeth from falling out, improves the structural stability and waterproof performance of the zipper, reduces the risk of water penetration, and meets the requirements of high waterproof application scenarios.
Smart Images

Figure CN224344414U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waterproof zippers, specifically to a waterproof zipper that prevents teeth from falling out. Background Technology
[0002] Zippers are commonly used connecting components in clothing, bags, and other product industries, and waterproof zippers, due to their waterproof function, have an even wider range of applications. Current waterproof zippers generally consist of a waterproof fabric strip, teeth, and a zipper pull, with opening and closing achieved by the zipper pull engaging or disengaging the teeth. However, in practical use, several shortcomings exist:
[0003] When the zipper is frequently opened and closed or subjected to force, the teeth are prone to coming off, which affects the normal use of the zipper and reduces the product's lifespan. This problem is particularly prominent in scenarios where the zipper needs to be opened and closed frequently or subjected to great force, such as outdoor backpacks and rain jackets.
[0004] Existing waterproof zippers have a relatively simple waterproof structure, relying solely on the waterproof properties of the waterproof fabric strips themselves. In wet or humid environments, water can easily penetrate from the zipper's meshing points, resulting in limited waterproofing effectiveness. This cannot meet the stringent waterproofing requirements of applications such as diving suits and waterproof tents.
[0005] Meanwhile, the existing zippers do not fit the waterproof strip well when closed, which can easily create gaps and further affect the waterproof effect. In addition, the overall structural stability and reliability of the zippers need to be improved. Utility Model Content
[0006] The purpose of this utility model is to solve the above defects and provide a waterproof zipper that prevents tooth loss. It has a limiting rib between adjacent teeth, a flexible magnetic protrusion at the front end of the first waterproof strip, and a waterproof cover with a grooved soft steel strip at the front end of the second waterproof strip. This solves the technical problems of easy tooth loss and poor waterproof effect in the prior art.
[0007] The objective of this utility model is achieved through the following means:
[0008] A waterproof zipper with anti-loosening features includes a first waterproof strip, a second waterproof strip, and a zipper pull. The zipper pull is positioned between the first and second waterproof strips. Teeth are fixedly installed at equal intervals on the inner sides of both the first and second waterproof strips. Limiting ribs are provided between adjacent teeth, and both ends of the limiting ribs are fixedly connected to the teeth. A flexible magnetic protrusion is provided at the front end of the first waterproof strip, and a waterproof cover is provided at the front end of the second waterproof strip. A grooved soft steel strip is provided on the inner side of the waterproof cover.
[0009] Furthermore, the flexible magnetic protrusion is sewn and fixed to the first waterproof fabric strip, and the waterproof cover is sewn and fixed to the second waterproof fabric strip.
[0010] Furthermore, the grooved soft steel strip is sewn and fixed to the waterproof cover, and the flexible magnetic protrusion is adapted to the grooved soft steel strip. The combination of the flexible magnetic protrusion and the grooved soft steel strip makes the waterproof cover magnetically fixed, thereby covering the zipper.
[0011] Furthermore, a third waterproof strip is sewn and fixed to the rear end face of the first waterproof strip, and a fourth waterproof strip is sewn and fixed to the rear end face of the second waterproof strip. The third and fourth waterproof strips overlap after the zipper is closed to improve the waterproof performance.
[0012] Furthermore, both the upper inner sides of the first and second waterproof strips are provided with blocks, and the blocks are sewn and fixed to the first and second waterproof strips. The blocks are used to cover the zipper pull and prevent it from falling off.
[0013] Furthermore, a first base block is sewn and fixed to the lower inner side of the first waterproof strip, and a pin is integrally formed on the lower inner side of the first base block. A second base block is sewn and fixed to the lower inner side of the second waterproof strip, and a slot is provided on the upper inner surface of the second base block. The pin is adapted to the slot, and the pin and the slot are combined to fix the first base block and the second base block together, so as to connect the bottom of the zipper.
[0014] The beneficial effects of this utility model are:
[0015] By setting limiting ribs between adjacent teeth, with both ends of the limiting ribs fixedly connected to the teeth, the teeth are constrained, which enhances the stability of the tooth connection and prevents tooth detachment, solving the problem of easy tooth detachment affecting use in existing technologies. By setting a waterproof cover with flexible magnetic protrusions and grooved soft steel strips, the waterproof cover is magnetically adsorbed to fit the front end of the first waterproof strip, achieving multiple waterproof protections. This improves the waterproof performance of the zipper and reduces the risk of water penetration, solving the problem of the single waterproof structure and limited waterproof effect of existing waterproof zippers. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of a waterproof zipper that prevents tooth loss according to this utility model;
[0017] Figure 2 This is a perspective view of the first and second fabric strips of a waterproof zipper designed to prevent tooth loss according to this utility model.
[0018] Figure 3 This is a three-dimensional view of the third waterproof strip, fourth waterproof strip, flexible magnetic protrusion strip, and grooved soft steel strip structure of a waterproof zipper designed to prevent tooth loss according to this utility model.
[0019] Figure 4This is a three-dimensional view of the tooth structure of a waterproof zipper that prevents tooth loss according to this utility model.
[0020] In the diagram, 1. First waterproof strip; 2. Second waterproof strip; 3. Toothed piece; 4. First base block; 5. Second base block; 6. Limiting rib; 7. Pin; 8. Slot; 9. Flexible magnetic protrusion; 10. Waterproof cover; 11. Grooved soft steel strip; 12. Third waterproof strip; 13. Fourth waterproof strip; 14. Pull head; 15. Stop block. Detailed Implementation
[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. This embodiment refers to... Figures 1-4 The present invention relates to a waterproof zipper with anti-loosening features, comprising a first waterproof strip 1, a second waterproof strip 2, and a zipper head 14. The zipper head 14 is positioned between the first waterproof strip 1 and the second waterproof strip 2. Teeth 3 are fixedly installed at equal intervals on the inner sides of both the first and second waterproof strips 1 and 2. Limiting ribs 6 are provided between adjacent teeth 3, and the two ends of the limiting ribs 6 are fixedly connected to the teeth 3. A flexible magnetic protrusion 9 is provided at the front end of the first waterproof strip 1, and a waterproof cover 10 is provided at the front end of the second waterproof strip 2. A grooved soft steel strip 11 is provided on the inner side of the waterproof cover 10.
[0022] like Figure 1 and Figure 3 As shown, the flexible magnetic protrusion 9 is sewn and fixed to the first waterproof cloth strip 1, and the waterproof cover 10 is sewn and fixed to the second waterproof cloth strip 2.
[0023] like Figure 1 and Figure 3 As shown, the grooved soft steel strip 11 is sewn and fixed to the waterproof cover 10, and the flexible magnetic protrusion 9 is adapted to the grooved soft steel strip 11. The combination of the flexible magnetic protrusion 9 and the grooved soft steel strip 11 makes the waterproof cover 10 magnetically fixed, thereby covering the zipper.
[0024] like Figure 1 and Figure 3 As shown, a third waterproof strip 12 is sewn and fixed to the rear end face of the first waterproof strip 1, and a fourth waterproof strip 13 is sewn and fixed to the rear end face of the second waterproof strip 2. The third waterproof strip 12 and the fourth waterproof strip 13 overlap after the zipper is closed to improve the waterproof performance.
[0025] like Figure 1 and Figure 3 As shown, a stop block 15 is provided on the upper inner side of both the first waterproof strip 1 and the second waterproof strip 2, and the stop block 15 is sewn and fixed to the first waterproof strip 1 and the second waterproof strip 2. The stop block 15 is used to cover the zipper pull 14 to prevent the zipper pull 14 from falling off.
[0026] like Figure 1 , Figure 2 and Figure 4 As shown, a first base block 4 is sewn and fixed to the lower inner side of the first waterproof strip 1. A pin 7 is integrally formed on the lower inner side of the first base block 4. A second base block 5 is sewn and fixed to the lower inner side of the second waterproof strip 2. A slot 8 is provided on the upper inner surface of the second base block 5. The pin 7 is adapted to the slot 8. The pin 7 and the slot 8 are combined to fix the first base block 4 and the second base block 5 together, so as to connect the bottom of the zipper.
[0027] The working principle of a waterproof zipper with anti-loosening teeth in this embodiment is as follows: When the waterproof zipper is closed, the pin 7 at the lower end of the first base block 4 is first inserted into the slot 8 at the upper end of the second base block 5, thereby making the first base block 4 and the second base block 5 combine. Pull the zipper head 14 upward, thereby making the teeth 3 merge, and thus closing the zipper.
[0028] After the zipper is closed, the spacing between adjacent teeth 3 is limited by the pull of the limiting rib 6, which prevents teeth from falling out. Then, the waterproof cover 10 is folded and closed towards the flexible magnetic protrusion 9, so that the waterproof cover 10 covers the teeth 3. Under the action of magnetic force, the grooved soft steel strip 11 and the flexible magnetic protrusion 9 are combined. The cooperation between the groove and the protrusion in the structure improves the waterproof performance. At the same time, after the zipper is closed, the third waterproof strip 12 and the fourth waterproof strip 13 are closed to cover the back of the zipper, further increasing the waterproof performance.
[0029] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.
Claims
1. A waterproof zipper with anti-loosening teeth, comprising a first waterproof strip, a second waterproof strip, and a zipper pull, wherein the zipper pull is disposed between the first and second waterproof strips, and teeth are fixedly installed at equal intervals on the inner sides of both the first and second waterproof strips, characterized in that: A limiting rib is provided between adjacent teeth, and the two ends of the limiting rib are fixedly connected to the teeth. A flexible magnetic protrusion is provided at the front end of the first waterproof cloth strip, and a waterproof cover is provided at the front end of the second waterproof cloth strip. A grooved soft steel strip is provided on the inner side of the waterproof cover.
2. The waterproof zipper with anti-tooth-detachment feature according to claim 1, characterized in that: The flexible magnetic protrusion is sewn and fixed to the first waterproof fabric strip, and the waterproof cover is sewn and fixed to the second waterproof fabric strip.
3. The waterproof zipper with anti-loosening teeth according to claim 1, characterized in that: The grooved soft steel strip is sewn and fixed to the waterproof cover cloth, and the flexible magnetic protrusion is adapted to the grooved soft steel strip.
4. The waterproof zipper with anti-loosening teeth according to claim 1, characterized in that: A third waterproof strip is sewn and fixed to the rear end face of the first waterproof strip, and a fourth waterproof strip is sewn and fixed to the rear end face of the second waterproof strip.
5. The waterproof zipper with anti-loosening teeth according to claim 1, characterized in that: Both the upper inner sides of the first and second waterproof strips are provided with blocks, and the blocks are sewn and fixed to the first and second waterproof strips.
6. The waterproof zipper with anti-loosening teeth according to claim 1, characterized in that: The lower inner side of the first waterproof strip is sewn and fixed with a first base block, and the lower inner side of the first base block is integrally formed with a pin. The lower inner side of the second waterproof strip is sewn and fixed with a second base block, and the upper inner surface of the second base block is provided with a slot, and the pin is adapted to the slot.