Water-tight nylon zipper

Abstract

According to the water-tight nylon zipper, convex-concave sealing can be achieved between the reverse side of an upper end retainer (16) and a lower layer plate (15B) of a sliding part (15), the sealing contact face is of a broken line structure, the sealing performance is good, and reliability is higher; meanwhile, the contact area of the rear-end protruding part (19B) and the groove part (46) is not increased relative to plane contact due to the sealing fit of the rear-end protruding part (19B) and the groove part (46), so that the sliding part (15) is pulled more smoothly.

Description

Technical Field

[0001] The present invention relates to the technical field of zippers, and particularly to a water-tight nylon zipper. Background Art

[0002] Zippers are very common in people's daily lives and are indispensable opening and closing devices. Due to the convenience of opening and closing, zippers have a wide range of uses. Water-tight nylon zippers are more widely used in diving suits, airtight bags, oxygen chambers, sealed bags, etc. for diving or sailing, which need to prevent water and gas from passing through. The water-tight nylon zipper realizes the opening and closing of two zippers by reciprocating the slider on two relatively arranged zipper tapes, so as to realize sealing and opening. The closing elements are usually chain teeth arranged in a straight line along the opposite longitudinal edges of the zipper tape. The slider is driven by a pull head towards the upper stop at the upper end of the zipper to complete the sealing between the two zipper tapes. However, in order to make the zipper completely sealed, it is necessary to not only achieve the sealing of the zipper tape, but also achieve the sealed connection between the slider and the upper and lower stops, and it is necessary to achieve complete sealing between the slider and the upper stop. Although the sealing between the upper stop and the slider has been realized in the prior art, the inner cavity contact surfaces of the upper layer plate and the lower layer plate of the slider are in plane contact sealing with the front and back two planes of the upper stop. The defect caused by this is the friction between the two, which affects the smoothness of the zipper; at the same time, the sealing performance is poor, becoming a shortcoming of water and gas sealing. Summary of the Invention

[0003] The purpose of the present invention is to provide a water-tight nylon zipper, including a sealing structure 10, and the sealing structure 10 includes: left and right continuous fastening parts 12A, 12B, a slider 15 for slidingly closing or opening the left and right continuous fastening parts 12A, 12B, and an upper stop 16 provided at one end of the left and right continuous fastening parts 12A, 12B for locking and sealing or slidingly unlocking with the slider 15;

[0004] The upper stop 16 includes a hollow accommodating part 17, a front end part 29 located at the closed end of the hollow accommodating part 17, and a rear end part located at the open end of the hollow accommodating part 17; on the reverse side of the rear end part, a rear end convex part 19B is provided at the edge of the hollow accommodating part 17;

[0005] The slider 15 includes an upper layer plate 15A and a lower layer plate 15B connected to each other. The upper layer plate 15A cooperates with the front side of the upper stop 16, the lower layer plate 15B cooperates with the reverse side of the upper stop 16, and the lower layer plate 15B is provided with a groove part 46 for sealing cooperation with the rear end convex part 19B.

[0006] Preferably, a sunken surface 47 is provided at the front end of the lower layer plate 15B; the front end portion 29 includes a front end portion 29B on the reverse side;

[0007] The sunken surface 47 is in sealing cooperation with the front end portion 29B on the reverse side.

[0008] Preferably, the rear end convex portion 19B further includes two oppositely arranged dovetail ends 19B1, and the inner side of the dovetail end 19B1 is a chain tooth covering transition area 51;

[0009] The groove portion 46 includes a first groove portion 46A and a second groove portion 46B arranged in parallel along the sliding direction of the sliding member 15, and a first sealing step 61A is arranged between the first groove portion 46A and the second groove portion 46B; the first sealing step 61A forms a sealing cooperation with the chain tooth covering transition area 51.

[0010] Preferably, second sealing steps 61B are respectively provided on the outer sides of the first groove portion 46A and the second groove portion 46B;

[0011] On the reverse side of the rear end portion and on the side of the rear end convex portion 19B away from the hollow accommodating portion 17, first sunken portions 41B are respectively provided; an extrusion portion 21 is formed on the side of the first sunken portion 41B;

[0012] The second sealing steps 61B are respectively in sealing cooperation with the first sunken portions 41B.

[0013] The side surface of the dovetail end 19B1 facing the left and right continuous fastening portions 12A, 12B is a first inclined edge 19B11.

[0014] Preferably, the front surface of the upper end stopper 16 includes an edge convex portion 19A arranged around the closed end edge of the hollow accommodating portion 17; and an end convex portion 19A1 located at the open end of the hollow accommodating portion 17, and the end convex portion 19A1 is connected to the edge convex portion 19A;

[0015] The edge convex portion 19A and the end convex portion 19A1 form a sealing cooperation with the upper layer plate 15A.

[0016] Preferably, a second sunken portion 41A is provided on the outer periphery of the edge convex portion 19A;

[0017] The side surface of the end convex portion 19A1 facing the left and right continuous fastening portions 12A, 12B is a second inclined edge 19A11.

[0018] Preferably, the upper end stopper 16 and the sliding member 15 are in interference fit.

[0019] Preferably, it further includes a reinforcing block 70 located at the end of the upper stop member 16 to connect the left and right continuous fastening portions 12A and 12B.

[0020] Preferably, the length of the injection molding coating of the left and right continuous fastening portions 12A and 12B is 0.5 mm - 5 mm.

[0021] Preferably, the left and right continuous fastening portions 12A and 12B are coated with polyurethane or polyvinyl chloride or synthetic rubber; the upper stop member 16 is made by coating with polyurethane or polyvinyl chloride or synthetic rubber.

[0022] For the water-tight nylon zipper of the present invention, convex-concave sealing can be achieved between the reverse side of the upper stop member 16 and the lower layer plate 15B of the slider 15. The sealing contact surface has a broken line structure, with good sealing performance and higher reliability; at the same time, the contact area of the sealing fit between the rear end convex portion 19B and the groove portion 46 does not increase compared with the planar contact, making the pulling of the slider 15 smoother. Description of the Drawings

[0023] Figure 1 Schematic perspective view of the reverse side of the stop member in Embodiment 1 of the present invention.

[0024] Figure 2 Schematic perspective view of the front side of the stop member in Embodiment 1 of the present invention.

[0025] Figure 3 Schematic diagram of the slider structure in Embodiment 1 of the present invention.

[0026] Among them, Fig. 31 is a top view of the slider; Fig. 32 is a perspective view of the slider; Fig. 33 is a rear view of the slider; Fig. 34 is a side view of the slider;

[0027] Figure 4 Schematic cross-sectional view of the lower layer plate of the slider in Embodiment 1 of the present invention (cut at the column).

[0028] Figure 5 Schematic cross-sectional view of the upper layer plate of the slider in Embodiment 1 of the present invention (cut at the column).

[0029] Figure 6 Schematic diagram of the structure before the reverse side of the stop member and the lower layer plate of the slider are used in sealed cooperation in Embodiment 1 of the present invention.

[0030] Figure 7 Schematic diagram of the structure when the reverse side of the stop member and the lower layer plate of the slider are used in sealed cooperation in Embodiment 1 of the present invention.

[0031] Figure 8 Schematic diagram of the structure before the front side of the stop member and the upper layer plate of the slider are used in sealed cooperation in Embodiment 1 of the present invention.

[0032] Figure 9 Schematic diagram of the structure when the front surface of the stopper in Embodiment 1 of the present invention is used in sealed cooperation with the upper layer plate of the slider.

[0033] In the figure: 10, sealing structure; 12A, left continuous fastening part; 12B, right continuous fastening part; 15, slider; 15A, upper layer plate; 15B, lower layer plate; 16, upper end stopper; 17, hollow accommodating part; 19A, edge convex part; 19A1, end convexity; 19A11, second inclined edge; 19B, rear end convex part; 19B1, dovetail end; 19B11, first inclined edge; 29, front end part; 29B, front end part of the reverse side; 20, column; 21, extrusion part; 41B, first sinking part; 41A, second sinking part; 46, groove part; 46A, first groove part; 46B, second groove part; 47, sinking surface; 51, chain tooth coating transition area; 61, flange; 61A, first sealing step; 61B, second sealing step; 70, reinforcing block. Detailed implementation manners

[0034] The present invention will be specifically introduced below in conjunction with the embodiments and the drawings.

[0035] For the convenience of understanding, the direction facing the user of the zipper tape, the stopper, the slider, etc. is defined as the front, and the opposite is the reverse. The direction of the zipper tape, the stopper, and the slider facing the upper stopper is defined as the front end, and the opposite is the rear end. When mating, the front surface of the stopper 16 is in sealed cooperation with the upper layer plate 15A of the slider 15, and the reverse surface of the stopper 16 is in sealed cooperation with the lower layer plate 15B of the slider 15, so as to achieve the sealed cooperation between the stopper 16 and the slider 15 after static locking. The specific introduction is as follows:

[0036] Embodiment 1

[0037] As Figures 1-9 shown, this embodiment provides a water-tight nylon zipper, including a sealing structure 10, and the sealing structure 10 includes: left and right continuous fastening parts 12A, 12B, a slider 15 for slidingly closing or opening the left and right continuous fastening parts 12A, 12B, and an upper end stopper 16 provided at one end of the left and right continuous fastening parts 12A, 12B for locking and sealing or sliding unlocking with the slider 15;

[0038] As Figure 1 shown, the upper end stopper 16 includes a hollow accommodating part 17, a front end part 29 located at the closed end of the hollow accommodating part 17, and a rear end part located at the open end of the hollow accommodating part 17; on the reverse side of the rear end part, a rear end convex part 19B is provided at the edge of the hollow accommodating part 17;

[0039] As Figures 3-5As shown, the sliding member 15 includes an upper layer plate 15A and a lower layer plate 15B which are connected to each other. The upper layer plate 15A cooperates with the front surface of the upper end stopper 16, and the lower layer plate 15B cooperates with the back surface of the upper end stopper 16. The lower layer plate 15B is provided with a groove portion 46 which is in sealing cooperation with the rear end convex portion 19B. As Figures 6-7 shown.

[0040] In this way, a convex-concave seal can be achieved between the back surface of the upper end stopper 16 and the lower layer plate 15B of the sliding member 15. The sealing contact surface has a broken line structure, with good sealing performance and higher reliability. At the same time, the contact area between the rear end convex portion 19B and the groove portion 46 in the sealing cooperation does not increase compared with the plane contact, making the pulling of the sliding member 15 smoother.

[0041] Preferably, as Figure 4 shown, the front end of the lower layer plate 15B is provided with a sunken surface 47; the front end portion 29 includes a front end portion on the back surface 29B;

[0042] The sunken surface 47 is in sealing cooperation with the front end portion on the back surface 29B.

[0043] In this way, a convex-concave seal cooperation is also achieved between the sunken surface 47 and the front end portion on the back surface 29B. The sealing contact surface has a broken line structure, with good sealing performance and higher reliability.

[0044] Preferably, as Figure 1 shown, the rear end convex portion 19B further includes two oppositely arranged dovetail ends 19B1, and the inner side of the dovetail ends 19B1 is a chain tooth coating transition area 51;

[0045] As Figure 4 shown, the groove portion 46 includes a first groove portion 46A and a second groove portion 46B which are arranged in parallel along the sliding direction of the sliding member 15, and a first sealing step 61A is arranged between the first groove portion 46A and the second groove portion 46B;

[0046] The first sealing step 61A forms a sealing cooperation with the chain tooth coating transition area 51.

[0047] In this way, the first sealing step 61A and the chain tooth coating transition area 51 form an extrusion sealing cooperation. The chain tooth coating transition area 51 is coated with an elastic material, and its sealing surface is more fitting when in extrusion contact with the first sealing step 61A, with better sealing effect and reliability.

[0048] It should be understood that the shape of the rear end convex portion 19B can also be other shapes; for example, if the rear end convex portion 19B is straight near the opening end of the hollow accommodating portion 17, it is also within the protection scope of this application, or other shapes, as long as the convex-concave seal can be achieved.

[0049] Preferably, as Figure 4 shown, second sealing steps 61B are respectively provided on the outer sides of the first groove portion 46A and the second groove portion 46B;

[0050] As Figure 1 shown, first sinking portions 41B are respectively provided on the reverse sides of the rear end portions on the sides away from the hollow accommodating portion 17 of the rear end convex portions 19B; an extrusion portion 21 is formed on the side of the first sinking portion 41B;

[0051] The second sealing steps 61B are respectively in sealing cooperation with the first sinking portions 41B;

[0052] The side surfaces of the dovetail ends 19B1 facing the left and right continuous fastening portions 12A and 12B are first inclined edges 19B11.

[0053] In this way, the second sealing steps 61B respectively achieve convex-concave sealing cooperation with the first sinking portions 41B, and the sealing contact surface has a broken line structure, so that the sealing performance is good and the reliability is higher.

[0054] Designing the side surfaces of the dovetail ends 19B1 facing the left and right continuous fastening portions 12A and 12B as the first inclined edges 19B11 can make the resistance smaller when the sliding member 15 and the stopping member 16 slide relative to each other, and the sliding is smoother.

[0055] Preferably, as Figure 2 shown, the front surface of the upper end stopping member 16 includes an edge convex portion 19A provided around the closed end edge of the hollow accommodating portion 17; and an end convex portion 19A1 located at the open end of the hollow accommodating portion 17, and the end convex portion 19A1 is connected to the edge convex portion 19A;

[0056] The edge convex portion 19A and the end convex portion 19A1 are in sealing cooperation with the upper layer plate 15A.

[0057] In this way, in the sealing cooperation between the front surface of the upper end stopping member 16 and the upper layer plate 15A, the two achieve convex-concave sealing cooperation at the edge convex portion 19A and the end convex portion 19A1, and the sealing contact surface has a broken line structure, so that the sealing performance is good and the reliability is higher. At the same time, the contact area is also limited to the edge convex portion 19A and the end convex portion 19A1, reducing the sliding friction resistance and improving the sliding smoothness.

[0058] Preferably, as Figure 2 shown, a second sinking portion 41A is provided on the outer periphery of the edge convex portion 19A; an extrusion portion 21 is formed between the second sinking portion 41A and the side of the end convex portion 19A1;

[0059] The side of the end protrusion 19A1 facing the left and right continuous fastening parts 12A and 12B is the second inclined edge 19A11.

[0060] Since the inner side of the upper plate 15A is a planar structure and the second sinking part 41A is a sunken design, the upper plate 15A does not contact the second sinking part 41A, reducing the sliding friction resistance and improving the smoothness of sliding. At the same time, the side of the end protrusion 19A1 facing the left and right continuous fastening parts 12A and 12B is designed as the second inclined edge 19A11, making the sliding resistance of the sliding part 15 relative to the stop part 16 smaller and smoother.

[0061] Preferably, the upper stop part 16 and the sliding part 15 are in interference fit. The so-called interference fit borrows the term in mechanical assembly. In this application, it means that for the internally contacting parts of the upper stop part 16 and the sliding part 15, the thickness of the upper stop part 16 is greater than the height of the corresponding part of the sliding part 15; preferably, the thickness and height difference is 0.01 mm - 0.5 mm. In this way, a certain pressure can still be maintained between the two after they are relatively locked, making the seal more reliable.

[0062] Preferably, as Figures 6-9 shown, it further includes a reinforcing block 70 located at the end of the upper stop part 16 connecting the left and right continuous fastening parts 12A and 12B.

[0063] This can connect and fix the left and right continuous fastening parts 12A and 12B together. Specifically, the reinforcing block 70 is formed by injection molding between the left and right continuous fastening parts 12A and 12B.

[0064] Preferably, the injection molding and coating length L of the left and right continuous fastening parts 12A and 12B is 0.5 mm - 5 mm. This length is easier to achieve in the injection molding process. Specifically, as Figure 8 shown, here the injection molding and coating is to perform injection molding and coating on the parts of the left and right continuous fastening parts 12A and 12B close to the stop part 16, and at the same time, perform injection molding and coating on the corresponding chain teeth. The chain teeth are coated to form a chain tooth coating transition area 51. The so-called injection molding and coating length refers to the length of the injection molding and coating of the left and right continuous fastening parts 12A and 12B close to the stop part 16 in the moving direction of the sliding part.

[0065] Preferably, the left and right continuous fastening parts 12A and 12B are coated with polyurethane or polyvinyl chloride or synthetic rubber; the upper stop part 16 is made by coating with polyurethane or polyvinyl chloride or synthetic rubber.

[0066] These materials are all elastomers. Wrapping the left and right continuous fastening parts 12A and 12B (including the chain teeth) with the above elastic materials provides good overall sealing and no air permeability. At the same time, during extrusion contact or frictional contact, they have a certain deformation, resulting in a higher degree of fit and more reliable sealing. At the same time, the upper stopper 16 is made of an elastic material. When it is in sealing cooperation with the sliding part made of a hard material, it has a certain deformation, resulting in a higher degree of fit and more reliable sealing.

[0067] The working principle of the water-tight nylon zipper of this application to achieve sealing:

[0068] Regarding the reverse sealing situation of the upper stopper 16: As Figures 6-7 shown, the upper stopper 16 includes a hollow accommodating part 17 that can accommodate the middle column 20 of the sliding part 15, and a side extrusion part 21 and a chain tooth covering transition area 51 located on the reverse side of the upper stopper 16.

[0069] When the sliding part 15 slides towards the upper stopper 16 and the column 20 is accommodated in the hollow accommodating part 17, the two side extrusion parts 21 are squeezed by both sides of the flange 61 of the sliding part 15, and the opposite chain tooth covering transition areas 51 can be sealed and fitted together;

[0070] The upper stopper 16 further includes a rear raised part 19B, a front raised part 29B, and a sunken part 41B. When the column 20 of the sliding part 15 is accommodated in 17, at this time, the front end part 29B on the reverse side is in extrusion contact with the sunken surface 47 of the sliding part 15; the rear raised part 19B is accommodated in the groove part 46 of the sliding part 15 and is in sealing cooperation with the groove part 46; the first sunken part 41B is in sealing cooperation with the second sealing step 61B of the sliding part 15; the chain tooth covering transition area 51 of the upper stopper 16 is in sealing cooperation with the first sealing step 61A of the sliding part 15, finally forming a concave-convex sealing structure.

[0071] The first inclined edge 19B11 is provided on the rear raised part 19B, which can make the sliding of the lower layer plate 15B of the sliding part 15 relative to the upper stopper 16 smoother.

[0072] The front sealing situation of the upper stopper 16 is as follows: As Figures 8-9 shown, the upper stopper 16 includes a raised part 19A and a sunken part 41A. When the sliding part 15 slides towards the upper stopper 16 and the column 20 is accommodated in the hollow accommodating part 17, the edge raised part 19A is in sealing cooperation with the upper layer plate 15A of the sliding part 15. At this time, the two side chain tooth covering transition areas 51 can be in sealing contact. The second inclined edge 19A11 provided at the edge of the end raised part 19A1 makes the sliding of the upper layer plate 15A of the sliding part 15 relative to the upper stopper 16 smoother.

[0073] Meanwhile, reinforcing blocks 70 are provided at the tops of the left and right continuous fastening portions 12A and 12B, so that the left and right continuous fastening portions can be combined into a whole, and specifically, the left and right continuous fastening portions 12A and 12B are fixedly connected by injection molding.

Claims

1. A watertight nylon zipper, comprising a sealing structure (10), and the sealing structure (10) includes: Left and right continuous fastening parts (12A, 12B), a sliding member (15) for slidingly closing or opening the left and right continuous fastening parts (12A, 12B), and an upper end stopper (16) provided at one end of the left and right continuous fastening parts (12A, 12B) for locking and sealing or slidingly unlocking with the sliding member (15); It is characterized in that: the upper end stopper (16) includes a hollow accommodating part (17), a front end part (29) located at the closed end of the hollow accommodating part (17), and a rear end part located at the open end of the hollow accommodating part (17); on the reverse side of the rear end part, a rear end convex part (19B) is provided at the edge of the hollow accommodating part (17); The sliding member (15) includes an upper layer plate (15A) and a lower layer plate (15B) connected to each other. The upper layer plate (15A) cooperates with the front side of the upper end stopper (16), the lower layer plate (15B) cooperates with the reverse side of the upper end stopper (16), and the lower layer plate (15B) is provided with a groove part (46) that sealingly cooperates with the rear end convex part (19B).

2. The water-tight nylon zipper according to claim 1, characterized in that, The front end of the lower layer plate (15B) is provided with a sunken surface (47); the front end part (29) includes a reverse front end part (29B) located on the reverse side; The sunken surface (47) sealingly cooperates with the reverse front end part (29B).

3. The water-tight nylon zipper according to claim 1, characterized in that, The rear end convex part (19B) further includes two oppositely arranged dovetail ends (19B1), and the inner side of the dovetail ends (19B1) is a chain tooth covering transition area (51); The groove part (46) includes a first groove part (46A) and a second groove part (46B) arranged in parallel along the sliding direction of the sliding member (15). A first sealing step (61A) is arranged between the first groove part (46A) and the second groove part (46B); the first sealing step (61A) forms a sealing cooperation with the chain tooth covering transition area (51).

4. The water-tight nylon zipper according to claim 3, wherein Second sealing steps (61B) are respectively provided on the outer sides of the first groove part (46A) and the second groove part (46B); On the reverse side of the rear end part, first sunken parts (41B) are respectively provided on the side of the rear end convex part (19B) away from the hollow accommodating part (17); an extrusion part (21) is formed on the side of the first sunken part (41B); The second sealing steps (61B) respectively form a sealing cooperation with the first sunken parts (41B). The side of the dovetail end (19B1) facing the left and right continuous fastening parts (12A, 12B) is a first inclined edge (19B11).

5. The water-tight nylon zipper according to claim 1, characterized in that, The front side of the upper end stopper (16) includes an edge convex part (19A) arranged around the edge of the closed end of the hollow accommodating part (17); and an end convex part (19A1) located at the open end of the hollow accommodating part (17), and the end convex part (19A1) is connected to the edge convex part (19A); The edge convex part (19A) and the end convex part (19A1) form a sealing cooperation with the upper layer plate (15A).

6. The watertight nylon zipper according to claim 5, characterized in that, A second sunken part (41A) is provided on the outer periphery of the edge convex part (19A); The side of the end protrusion (19A1) facing the left and right continuous fastening parts (12A, 12B) is the second inclined edge (19A11).

7. The water-tight nylon zipper according to claim 1, characterized in that, The upper end stopper (16) and the sliding member (15) are in interference fit.

8. The water-tight nylon zipper according to claim 1, characterized in that, It further includes a reinforcing block (70) located at the end of the upper end stopper (16) to connect the left and right continuous fastening parts (12A, 12B).

9. The water-tight nylon zipper according to claim 1, wherein The length of the injection molding coating of the left and right continuous fastening parts (12A, 12B) is 0.5 mm - 5 mm.

10. The water-tight nylon zipper according to claim 1, characterized in that, The left and right continuous fastening parts (12A, 12B) are coated by polyurethane or polyvinyl chloride or synthetic rubber; the upper stopper (16) is made by coating with polyurethane or polyvinyl chloride or synthetic rubber.

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