Anti-jamming zipper

Abstract

The utility model relates to a kind of anti-jamming zippers, including left chain belt, right chain belt, chain tooth group and pull head, chain tooth group is respectively fixed at the opposite side edge of left chain belt and right chain belt with interval, pull head is set in the outside of chain tooth group and can slide along chain tooth group, two groups are equipped in the guide anti-jamming component, all be set in the entry end inside of pull head, respectively located the upper and lower ends of left chain belt and right chain belt, each group of guide anti-jamming component includes two arc-shaped guide pieces of symmetrical distribution, the inside wall of arc-shaped guide piece is compatible with the outside wall of chain tooth group, and the front end of arc-shaped guide piece along pull head sliding direction is inclined to the outside of pull head;Elastic buffer is fixed between the inside wall of pull head and arc-shaped guide piece. The utility model is through setting guide anti-jamming component in the entry end of pull head, using arc-shaped guide piece to guide chain tooth, while cooperating the elastic effect of elastic buffer, can effectively prevent cloth or foreign matter to be jammed between pull head and chain tooth, reduce the occurrence of jamming phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of zipper technology, and in particular to an anti-jamming zipper. Background Technology

[0002] Zippers, as a common connector, are widely used in clothing, bags, tents, and other products. Existing zippers typically consist of a zipper belt, teeth, a zipper pull, and locking mechanisms. The teeth engage and disengage through the sliding of the zipper pull. However, in actual use, zippers often jam due to the following problems: First, the teeth can easily misalign during engagement, preventing the zipper pull from passing smoothly; second, the edges of clothing or fabric can easily get caught in the gap between the zipper pull and the teeth, hindering the zipper pull's movement; third, excessive friction between the zipper pull and the teeth, or wear and deformation of the teeth, can also cause jamming. These problems not only affect the normal use of the zipper and reduce the user experience, but may also cause the teeth to break and the zipper pull to be damaged by forcibly pulling the zipper pull, shortening the zipper's lifespan.

[0003] Therefore, it is necessary to develop a zipper that prevents jamming to address the aforementioned defects. Utility Model Content

[0004] The purpose of this invention is to provide an anti-jamming zipper. By optimizing the chain tooth structure and zipper pull design, the occurrence of jamming is reduced, and the smoothness and durability of the zipper are improved.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: an anti-jamming zipper, comprising a left chain belt, a right chain belt, a chain tooth assembly, and a zipper pull. The chain tooth assembly is fixed at intervals on the opposite side edges of the left and right chain belts. The zipper pull is sleeved on the outside of the chain tooth assembly and can slide along the chain tooth assembly. It also includes a guide anti-jamming component and an elastic buffer. The guide anti-jamming component is provided in two sets, both disposed inside the inlet end of the zipper pull, located at the upper and lower ends of the left and right chain belts respectively. Each set of the guide anti-jamming component includes two symmetrically distributed arc-shaped guide pieces. The inner sidewall of the arc-shaped guide piece is adapted to the outer sidewall of the chain tooth assembly, and the front end of the arc-shaped guide piece along the sliding direction of the zipper pull is inclined towards the outside of the zipper pull. The elastic buffer is fixed between the inner sidewall of the zipper pull and the arc-shaped guide piece.

[0006] Preferably, each chain tooth in the chain tooth group has an inclined step at its meshing end, the inclined step smoothly transitioning to the meshing tooth of the chain tooth, and the inclined steps of the chain teeth on the left chain belt and the chain teeth on the right chain belt are symmetrically distributed.

[0007] Preferably, the inner sidewall of the zipper head is provided with a groove corresponding to the position of the chain teeth assembly, and a wear-resistant pad is provided in the groove, the surface of the wear-resistant pad slidingly contacting the outer sidewall of the chain teeth.

[0008] Preferably, the elastic buffer is an arc-shaped spring sheet, one end of which is fixedly connected to the inner sidewall of the pull head, and the other end is fixedly connected to the outer sidewall of the arc-shaped guide piece.

[0009] Preferably, the front end of the arc-shaped guide plate is provided with a rounded corner, and the material of the arc-shaped guide plate is wear-resistant plastic or metal sheet.

[0010] Preferably, the wear-resistant pad is made of polytetrafluoroethylene or nylon.

[0011] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This utility model relates to an anti-jamming zipper. By incorporating a guide anti-jamming component at the zipper pull entrance, an arc-shaped guide plate guides the zipper teeth. Combined with the elasticity of a buffer, this effectively prevents fabric or foreign objects from getting stuck between the zipper pull and the zipper teeth, reducing the occurrence of jamming. The inclined step at the zipper tooth engagement end guides the teeth to engage accurately, preventing jamming caused by misalignment and improving the smoothness of zipper engagement. The wear-resistant pad inside the zipper pull reduces friction between the zipper pull and the zipper teeth, reducing wear and extending the zipper's lifespan, while also reducing jamming caused by excessive friction. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the anti-jamming zipper of this utility model; Figure 2 This is a schematic diagram of the three-dimensional structure of the slider of this utility model.

[0014] Explanation of reference numerals in the attached diagram: 1. Left chain belt; 2. Right chain belt; 3. Chain tooth assembly; 31. Chain tooth; 311. Inclined step; 4. Pull head; 41. Groove; 42. Wear-resistant pad; 5. Guide anti-jamming component; 51. Arc-shaped guide plate; 52. Rounded corner; 6. Elastic buffer. Detailed Implementation

[0015] The core of this invention is to provide an anti-jamming zipper. By optimizing the chain tooth structure and zipper pull design, the occurrence of jamming is reduced, and the smoothness and durability of the zipper are improved.

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In one specific implementation, such as Figures 1-2 As shown, an anti-jamming zipper includes a left zipper belt, a right zipper belt, zipper teeth, and a zipper pull. The zipper teeth are fixed at intervals along the opposite sides of the left and right zipper belts. The zipper pull is sleeved on the outside of the zipper teeth and can slide along the zipper teeth to achieve engagement and disengagement of the zipper teeth.

[0019] In one specific implementation, such as Figures 1-2 As shown, there are two sets of guide anti-jamming components, both located inside the inlet end of the zipper pull, at the upper and lower ends of the left and right chain belts respectively. These components guide the zipper's inner and outer sides, preventing foreign objects from getting stuck inside. Each set of guide anti-jamming components includes two symmetrically distributed arc-shaped guide plates. The inner wall of the arc-shaped guide plate matches the outer wall of the chain teeth assembly, and the front end of the arc-shaped guide plate slopes outwards along the sliding direction of the zipper pull. The front end of the arc-shaped guide plate has rounded corners, and the material of the arc-shaped guide plate is wear-resistant plastic or a thin metal sheet.

[0020] Specifically, the inner wall contour of the arc-shaped guide plate is adapted to the outer wall of the zipper teeth assembly, allowing it to closely conform to the shape of the zipper teeth and provide precise guidance when the teeth enter the zipper head. Its front end is designed to slope outwards towards the zipper head, forming an outward-expanding guide opening. When fabric or other foreign objects approach the zipper head inlet along with the zipper belt, the sloped front end can first contact the foreign object, using its guiding action to direct the foreign object to the outside of the zipper head, preventing it from entering the critical area between the zipper head and the zipper teeth assembly.

[0021] If abrasion-resistant plastics, such as polyoxymethylene (POM), are used, they offer high hardness and abrasion resistance while maintaining a certain degree of toughness, allowing them to maintain their shape and resist deformation over long-term use. Furthermore, plastic materials are relatively lightweight, not significantly increasing the overall weight of the zipper. If thin metal sheets, such as stainless steel, are used, they offer excellent strength and abrasion resistance, capable of withstanding significant impacts, making them suitable for applications requiring high zipper durability. Additionally, the rounded corners at the front of the curved guide effectively prevent sharp edges from scratching fabrics or clothing, further enhancing safety and reliability.

[0022] In one specific implementation, such as Figures 1-2 As shown, the elastic buffer is an arc-shaped spring sheet, fixed between the inner wall of the zipper pull and the arc-shaped guide plate. One end is fixedly connected to the inner wall of the zipper pull, and the other end is fixedly connected to the outer wall of the arc-shaped guide plate. Its main function is to provide elastic buffering when the guide anti-jamming assembly is subjected to lateral force, ensuring that the guide anti-jamming assembly can flexibly cope with various situations, effectively preventing foreign objects from getting stuck while avoiding damage to the chain teeth and zipper pull.

[0023] In one specific implementation, such as Figures 1-2 As shown, each chain tooth in the chain tooth group has an inclined step at its meshing end. The inclined step smoothly transitions with the meshing teeth of the chain tooth, and the inclined steps of the chain teeth on the left chain belt and the chain teeth on the right chain belt are symmetrically distributed.

[0024] In one specific implementation, such as Figures 1-2 As shown, the inner wall of the zipper pull has a groove corresponding to the position of the chain teeth. A wear-resistant pad is placed in the groove, and the surface of the wear-resistant pad slides in contact with the outer wall of the chain teeth. The wear-resistant pad is made of polytetrafluoroethylene or nylon.

[0025] The anti-jamming zipper of this utility model operates as follows: When the zipper pull is pulled, the zipper teeth engage accurately under the guidance of the inclined steps. The arc-shaped guide plate guides the zipper teeth. Simultaneously, when fabric approaches the zipper pull inlet, the arc-shaped guide plate undergoes elastic deformation under the action of the elastic buffer, pushing the fabric away and preventing jamming. The wear-resistant pad reduces friction between the zipper pull and the zipper teeth, making the zipper pull slide more smoothly.

[0026] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0027] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A jam-proof zipper, comprising a left chain strap (1), a right chain strap (2), a chain tooth assembly (3), and a zipper pull (4), wherein the chain tooth assembly (3) is fixed at intervals along the opposite side edges of the left chain strap (1) and the right chain strap (2), and the zipper pull (4) is sleeved on the outside of the chain tooth assembly (3) and can slide along the chain tooth assembly (3), characterized in that: It also includes a guide anti-jamming component (5) and an elastic buffer (6); the guide anti-jamming component (5) is provided in two sets, both of which are located inside the entrance end of the zipper head (4), respectively located at the upper and lower ends of the left chain (1) and the right chain (2). Each set of the guide anti-jamming component (5) includes two symmetrically distributed arc-shaped guide pieces (51). The inner sidewall of the arc-shaped guide piece (51) is adapted to the outer sidewall of the chain tooth group (3), and the front end of the arc-shaped guide piece (51) along the sliding direction of the zipper head (4) is inclined to the outside of the zipper head (4); the elastic buffer (6) is fixed between the inner sidewall of the zipper head (4) and the arc-shaped guide piece (51).

2. The anti-jam zipper of claim 1, wherein: Each chain tooth (31) in the chain tooth group (3) has an inclined step (311) at its meshing end. The inclined step (311) smoothly transitions to the meshing teeth of the chain tooth (31), and the inclined steps (311) of the chain tooth (31) on the left chain belt (1) and the chain tooth (31) on the right chain belt (2) are symmetrically distributed.

3. The anti-jam zipper of claim 2, wherein: The inner sidewall of the zipper head (4) is provided with a groove (41) corresponding to the position of the chain tooth group (3). A wear-resistant pad (42) is provided in the groove (41), and the surface of the wear-resistant pad (42) slides in contact with the outer sidewall of the chain tooth (31).

4. The anti-jam zipper of claim 1, wherein: The elastic buffer (6) is an arc-shaped spring sheet, one end of which is fixedly connected to the inner wall of the pull head (4), and the other end is fixedly connected to the outer wall of the arc-shaped guide sheet (51).

5. The anti-jam zipper of claim 1, wherein: The front end of the arc-shaped guide plate (51) is provided with a rounded corner (52), and the material of the arc-shaped guide plate (51) is wear-resistant plastic or metal sheet.

6. The anti-jam zipper of claim 3, wherein: The wear-resistant pad (42) is made of polytetrafluoroethylene or nylon.

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