Zipper with double-lock structure

Abstract

The utility model discloses a zipper with a double-lock structure, which comprises a zipper head, two sides of the zipper head are respectively provided with a zipper groove, the top surface of the zipper head is fixedly connected with a fixing hook, a pulling piece is movably connected in the fixing hook in a penetrating manner, the top surface of the zipper head is provided with two guide grooves in mirror symmetry, and the two guide grooves are provided with two locking grooves. The top walls of the two chain grooves are jointly provided with a groove communicated with the guide groove, a trapezoidal plate is connected into the groove in a telescopic mode and movably connected with the pull piece, the lower portion of the trapezoidal plate abuts against two trapezoidal blocks in mirror symmetry, the trapezoidal blocks are connected into the groove in a telescopic mode, and a friction plate is fixed to the bottom face of each trapezoidal block. And a trapezoidal block is arranged in each of the two chain grooves. According to the utility model, the two friction plates are respectively arranged in the two chain grooves, the friction plates are connected with the trapezoidal plate through the trapezoidal blocks, the trapezoidal plate is movably connected in the groove, and the top surface of the trapezoidal plate is movably connected with the pulling piece, so that the position of the zipper head on the zipper is conveniently locked, and the zipper head is prevented from being opened due to the influence of external force.

Description

Technical Field

[0001] This utility model relates to the field of zipper technology, and in particular to a zipper with a double-locking structure. Background Technology

[0002] A zipper is a connector that uses continuously arranged teeth to join or separate items. It is widely used in clothing, bags, tents, and other products. A zipper consists of teeth, a slider, and top and bottom stops (front and back stops) or locking mechanisms. The teeth are the key component, directly determining the zipper's lateral pulling strength. Generally, a zipper has two straps, each with a row of teeth, arranged alternately. The slider grips the teeth on both sides, and by sliding along the loop, the teeth on both sides can be engaged or disengaged.

[0003] However, existing zippers often slip open during use due to excessive items in the suitcase or bag, external force, or exaggerated user movements. In crowded places, the zipper can also slip due to scratching, which can easily lead to lost items and cause a lot of inconvenience to users. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a zipper with a double-locking structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a zipper with a double-locking structure, comprising a zipper head, a zipper groove on each side of the zipper head, a fixing hook fixedly connected to the top surface of the zipper head, a pull tab movably connected within the fixing hook, two mirror-symmetrical guide grooves on the top surface of the zipper head, the guide grooves being located below the fixing hooks, a groove communicating with the guide grooves being formed on the top walls of the two zipper grooves, a trapezoidal plate telescopically connected within the groove, the trapezoidal plate being movably connected to the pull tab, two mirror-symmetrical trapezoidal blocks abutting against the bottom of the trapezoidal plate, the trapezoidal blocks being telescopically connected within the groove, a friction plate fixed to the bottom surface of each trapezoidal block, and one trapezoidal block in each of the two zipper grooves.

[0006] As a further description of the above technical solution: the pull tab includes a U-shaped plate one that is movably connected to the trapezoidal plate, a U-shaped plate two that is telescopically connected to the end of the U-shaped plate one, one end of the fixing hook being located between the U-shaped plate one and the U-shaped plate two, and a limiting block being fixedly connected to the top surface of the zipper head, the limiting block being movably connected to the U-shaped plate two.

[0007] As a further description of the above technical solution: two mirror-symmetrical notches are opened on one side of the U-shaped plate, and a connecting block is movably connected in each notch. A connecting block is movably connected in each guide groove, and both connecting blocks are fixed on the top surface of the trapezoidal plate.

[0008] As a further description of the above technical solution: two mirror-symmetrical blind holes are horizontally opened on the side of the trapezoidal plate, and a through hole is horizontally passed through each blind hole. A guide rod is axially slidably connected in each through hole. The guide rod is horizontally fixed to the inner wall of the groove. A spring is sleeved on the outer edge of the guide rod and the spring is fixed between the blind hole and the inner wall of the groove.

[0009] As a further description of the above technical solution: two mirror-symmetrical sliding grooves are vertically opened on the inner walls of both sides of the groove, and a slider is slidably connected in each of the sliding grooves. The two sliders are fixedly connected to the trapezoidal block, and a spring is fixed between the sliders and the sliding grooves.

[0010] As a further description of the above technical solution: A positioning groove is horizontally opened on the side of the limiting block, and a positioning block is movably inserted into the positioning groove. The positioning block is fixedly connected to the second U-shaped plate. A storage groove is horizontally opened on each side of the first U-shaped plate, and a limiting plate is horizontally slidably connected in each storage groove. A second guide rod is horizontally fixed on the side of the limiting plate, and the second guide rod is fixedly connected to the second U-shaped plate. A guide sleeve is slidably sleeved on the outer edge of the second guide rod, and the guide sleeve is fixed in the storage groove. A first spring abuts against the limiting plate and the guide sleeve, and the spring sleeve is sleeved on the outer edge of the second guide rod.

[0011] As a further description of the above technical solution: both the trapezoidal block and the trapezoidal plate are right-angled trapezoids, and their inclined surfaces are opposite and adapted to each other.

[0012] This utility model has the following beneficial effects:

[0013] Compared with existing technologies, this zipper with a double-locking structure uses a friction plate in each of the two chain grooves, and connects the friction plate to the trapezoidal plate via a trapezoidal block. The trapezoidal plate is movably connected in the groove, and a pull tab is movably connected to the top surface of the trapezoidal plate. This makes it easy to lock the position of the zipper head on the zipper and prevent the zipper head from being opened by external force. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of a zipper with a double-locking structure proposed in this utility model;

[0015] Figure 2This is a side view of the overall structure of a zipper with a double-locking structure proposed in this utility model;

[0016] Figure 3 This is a main sectional view of the overall structure of a zipper with a double-locking structure proposed in this utility model;

[0017] Figure 4 This is a top sectional view of the partial connection between U-shaped plate one and U-shaped plate two of a zipper with a double-locking structure proposed in this utility model.

[0018] Figure 5 This utility model proposes a zipper with a double-locking structure. Figure 3 Enlarged view of the structure at point A in the middle;

[0019] Figure 6 This utility model proposes a zipper with a double-locking structure. Figure 5 Enlarged view of the structure at point B in the middle.

[0020] Legend:

[0021] 1. Zipper head; 2. Zipper groove; 3. Guide groove; 4. U-shaped plate one; 5. U-shaped plate two; 6. Limiting block; 7. Fixing hook; 8. Trapezoidal block; 9. Friction plate; 10. Groove; 11. Trapezoidal plate; 12. Guide rod one; 13. Connecting block; 14. Notch; 15. Positioning groove; 16. Positioning block; 17. Storage groove; 18. Limiting plate; 19. Spring one; 20. Guide rod two; 21. Guide sleeve; 22. Through hole; 23. Blind hole; 24. Spring two; 25. Slide groove; 26. Slider; 27. Spring three. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. 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.

[0023] Reference Figures 1 to 6This utility model provides a zipper with a double-locking structure, including a zipper head 1, a chain groove 2 on each side of the zipper head 1, a fixing hook 7 fixedly connected to the top surface of the zipper head 1, a pull tab movably connected inside the fixing hook 7, two mirror-symmetrical guide grooves 3 on the top surface of the zipper head 1, the guide grooves 3 being located below the fixing hook 7, a groove 10 communicating with the guide groove 3 being opened on the top wall of the two chain grooves 2, a trapezoidal plate 11 telescopically connected inside the groove 10, the trapezoidal plate 11 being movably connected to the pull tab, two mirror-symmetrical trapezoidal blocks 8 abutting below the trapezoidal plate 11, the trapezoidal blocks 8 being telescopically connected inside the groove 10, a friction plate 9 fixed to the bottom surface of each trapezoidal block 8, a trapezoidal block 8 in each of the two chain grooves 2, the trapezoidal block 8 and the trapezoidal plate 11 being right-angled trapezoids, and their inclined surfaces being opposite and compatible;

[0024] Two mirror-symmetrical blind holes 23 are horizontally opened on the side of the trapezoidal plate 11. A through hole 22 is horizontally passed through each blind hole 23. A guide rod 12 is axially slidably connected in each through hole 22. The guide rod 12 is horizontally fixed to the inner wall of the groove 10. A spring 24 is sleeved on the outer edge of the guide rod 12. The spring 24 is fixed between the blind hole 23 and the inner wall of the groove 10. Two mirror-symmetrical sliding grooves 25 are vertically opened on the inner walls of both sides of the groove 10. A slider 26 is slidably connected in each sliding groove 25. The two sliders 26 are fixedly connected to the trapezoidal block 8. A spring 3 27 is fixed between the sliders 26 and the sliding grooves 25. The sliding grooves 25 and the sliders 26 are dovetail grooves and dovetail blocks, respectively.

[0025] The zipper pull includes a U-shaped plate 4 movably connected to a trapezoidal plate 11. Two mirror-symmetrical notches 14 are formed on one side of the U-shaped plate 4, each notch 14 containing a connecting block 13. Each guide groove 3 contains a connecting block 13. Both connecting blocks 13 are fixed to the top surface of the trapezoidal plate 11. A second U-shaped plate 5 is telescopically connected to the end of the first U-shaped plate 4. One end of a fixing hook 7 is located between the first U-shaped plate 4 and the second U-shaped plate 5. A limiting block 6 is fixedly connected to the top surface of the zipper head 1, and the limiting block 6 is movably connected to the second U-shaped plate 5. A horizontal fixing hook is formed on the side of the limiting block 6. A positioning block 16 is movably inserted into the positioning groove 15. The positioning block 16 is fixedly connected to the U-shaped plate 2 5. A storage groove 17 is horizontally opened on each side of the U-shaped plate 2 4. A limiting plate 18 is horizontally slidably connected in each storage groove 17. A guide rod 20 is horizontally fixed on the side of the limiting plate 18. The guide rod 20 is fixedly connected to the U-shaped plate 2 5. A guide sleeve 21 is slidably sleeved on the outer edge of the guide rod 20. The guide sleeve 21 is fixed in the storage groove 17. A spring 19 is abutted between the limiting plate 18 and the guide sleeve 21. The spring 19 is sleeved on the outer edge of the guide rod 20.

[0026] By setting a friction piece 9 in each of the two chain grooves 2 and connecting the friction piece 9 to the trapezoidal plate 11 through the trapezoidal block 8, the trapezoidal plate 11 is movably connected in the groove 10, and the pull tab is movably connected on the top surface of the trapezoidal plate 11, which facilitates locking the position of the zipper head 1 on the zipper and prevents the zipper head 1 from being opened by external force.

[0027] Working principle: In use, firstly, the pull tab formed by U-shaped plate 4 and U-shaped plate 5 is pulled outwards. U-shaped plate 4 drives the connecting block 13 to move towards the limiting block 6. The connecting block 13 drives the trapezoidal plate 11 to move, while the spring is compressed. Under the action of the inclined surface of trapezoidal plate 11 and the inclined surface of trapezoidal block 8, trapezoidal block 8 carries the friction piece 9 downwards. At the same time, the spring 27 is compressed, causing the friction piece 9 to abut against the top surface of the zipper in the chain groove 2. By increasing the friction between the zipper head 1 and the zipper, the zipper head 1 is prevented from being opened by the outward pull. Continue pulling the U-shaped plate 25 outwards, causing the limiting plate 18 and the guide rod 20 to move towards the outside of the storage groove 17. At the same time, the spring 19 is compressed, increasing the distance between the U-shaped plate 4 and the U-shaped plate 25. This causes the U-shaped plate 4 and the U-shaped plate 25 to flip to both sides of the limiting block 6, so that the limiting block 6 is located between the U-shaped plate 4 and the U-shaped plate 25. Then, release the U-shaped plate 24, and the spring 24 returns to its original position, causing the U-shaped plate 25 to fit against the U-shaped plate 4. At the same time, the positioning block 16 is inserted into the positioning groove 15 to lock the position of the pull tab and the trapezoidal block 8.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A zipper with a double-locking structure, comprising a zipper head (1), wherein a zipper groove (2) is formed on each side of the zipper head (1), characterized in that: A fixed hook (7) is fixedly connected to the top surface of the zipper head (1). A pull tab is movably connected inside the fixed hook (7). Two mirror-symmetrical guide grooves (3) are opened on the top surface of the zipper head (1). The guide grooves (3) are located below the fixed hook (7). The top walls of the two chain grooves (2) are jointly opened into a groove (10) that communicates with the guide grooves (3). A trapezoidal plate (11) is telescopically connected inside the groove (10). The trapezoidal plate (11) is movably connected to the pull tab. Two mirror-symmetrical trapezoidal blocks (8) are abutted below the trapezoidal plate (11). The trapezoidal blocks (8) are telescopically connected inside the groove (10). A friction piece (9) is fixed on the bottom surface of each trapezoidal block (8). Each of the two chain grooves (2) has one trapezoidal block (8).

2. The zipper with a double-locking structure according to claim 1, characterized in that: The pull tab includes a U-shaped plate one (4) movably connected to the trapezoidal plate (11), and a U-shaped plate two (5) telescopically connected to the end of the U-shaped plate one (4). One end of the fixing hook (7) is located between the U-shaped plate one (4) and the U-shaped plate two (5). A limiting block (6) is fixedly connected to the top surface of the zipper head (1), and the limiting block (6) is movably connected to the U-shaped plate two (5).

3. A zipper with a double-locking structure according to claim 2, characterized in that: Two mirror-symmetrical notches (14) are opened on one side of the U-shaped plate (4). A connecting block (13) is movably connected in each notch (14). A connecting block (13) is movably connected in each guide groove (3). Both connecting blocks (13) are fixed on the top surface of the trapezoidal plate (11).

4. A zipper with a double-locking structure according to claim 1, characterized in that: The trapezoidal plate (11) has two mirror-symmetrical blind holes (23) horizontally opened on its side. Each blind hole (23) has a through hole (22) horizontally penetrating through it. Each through hole (22) has a guide rod (12) axially slidingly connected to it. The guide rod (12) is horizontally fixed to the inner wall of the groove (10). The outer edge of the guide rod (12) is sleeved with a spring (24). The spring (24) is fixed between the blind hole (23) and the inner wall of the groove (10).

5. A zipper with a double-locking structure according to claim 1, characterized in that: Two mirror-symmetrical sliding grooves (25) are vertically opened on the inner walls of both sides of the groove (10). A slider (26) is slidably connected in each of the sliding grooves (25). The two sliders (26) are fixedly connected to the trapezoidal block (8). A spring (27) is fixed between the sliders (26) and the sliding grooves (25).

6. A zipper with a double-locking structure according to claim 2, characterized in that: A positioning groove (15) is horizontally opened on the side of the limiting block (6). A positioning block (16) is movably inserted into the positioning groove (15). The positioning block (16) is fixedly connected to the second U-shaped plate (5). A storage groove (17) is horizontally opened on each side of the first U-shaped plate (4). A limiting plate (18) is horizontally slidably connected in each storage groove (17). A guide rod (20) is horizontally fixed on the side of the limiting plate (18). The guide rod (20) is fixedly connected to the second U-shaped plate (5). A guide sleeve (21) is slidably sleeved on the outer edge of the guide rod (20). The guide sleeve (21) is fixed in the storage groove (17). A spring (19) abuts against the limiting plate (18) and the guide sleeve (21). The spring (19) is sleeved on the outer edge of the guide rod (20).

7. A zipper with a double-locking structure according to claim 1, characterized in that: Both the trapezoidal block (8) and the trapezoidal plate (11) are right-angled trapezoids, and their inclined surfaces are opposite and compatible.

Images