TWI664932B - Waterproof fastener - Google Patents

Abstract

The utility model relates to a water-blocking zipper, which is used for solving the problems that the conventional water-proof zipper is difficult to form and is not beautiful. The system includes: two cloth belts, each of which has a core portion adjacent to each side, and each of the cloth belts has an upper surface and a lower surface opposite to each other; a plurality of sprocket teeth coupled to the two core portions, the plurality of The sprockets are staggered, and any two staggered sprockets are tightly formed only at the middle line of the water-blocking zipper, and there is a gap between the remaining parts; two impervious gels, which are respectively covered The upper surface of the two cloth belts and the plurality of sprocket teeth, and fill the gap when the plurality of sprocket teeth are staggered, the two impermeable gels each have an abutment surface at the center line to form a separable close adherence. ; And a slider for engaging or disengaging the plurality of sprocket teeth.

Description

Water blocking zipper

The invention relates to a zipper, in particular to a water blocking zipper capable of preventing liquid penetration.

Please refer to FIG. 1 and FIG. 2, which are a conventional water-proof zipper 8. The conventional water-proof zipper 8 has two cloth tapes 81, and adjacent edges of the two cloth tapes 81 each have a core portion 811. Each of the core portions 811 is respectively combined with a row of fastening elements 82, and at least one of the top and bottom surfaces of the two rows of fastening elements 82 has a groove 821. The conventional water-tight zipper 8 further has a water-proof gel 83 attached to the two rows of fastening elements 82 in a fastened state, and is betted to cover the two rows of fastening elements 82 and the grooves 821 to A covering surface layer 831 is formed, and the impermeable gel 83 penetrates into the internal gap between the two rows of fastening elements 82 and the pair of tapes 81 and the gap penetrated into the other side of the two rows of fastening elements 82; The covering surface layer 831 is divided at the middle portion of the two rows of fastening elements 82 so that the water-proof zipper 8 can be fastened or separated from each other. An embodiment similar to the conventional water-tight zipper 8 has been disclosed in the Republic of China Publication No. I505788 “Clip-type fastener element zipper with a water-tight structure” patent case.

The conventional water-proof zipper 8 covers the two rows of fastening elements 82 by the covering surface layer 831, which can prevent liquid from penetrating through the gap between the two rows of fastening elements 82 to achieve the effect of preventing water penetration. However, since the positions where the two rows of fastening elements 82 are engaged (the thick line W in the first figure) are formed tightly without gaps, it is difficult for the two rows of fastening elements 82 to be fastened or separated from each other. Case.

On the other hand, when the two rows of the fastening elements 82 are fastened to each other, the outermost end (tooth head) of the fastening element 82 on one of the aforementioned cloth strips 81 and the core portion 811 of the other aforementioned cloth strip 81 remain. There is a clear distance H, so that the impermeable gel 83 can form an extension 832 there, and the extension 832 can be connected to the thin cover layer 831 to increase the impermeable gel 83 and the fastening element 82 The binding fastness. However, the formability of the extension portion 832 on the other surface of the two cloth tapes 81 is difficult to control, and often forms an irregular shape, which affects the aesthetics. In addition, the thickness of the extension portion 832 and the covering surface layer 831 are too different, not only the time for waiting for the cooling and forming is significantly different, but also the material for forming the extension portion 832 is high and the cost is high. In addition, the cloth tape 81 of the conventional water-proof zipper 8 needs to be additionally affixed with waterproof tape or sprayed with water-repellent agent, so the overall manufacturing process is relatively tedious and cumbersome.

Please refer to FIG. 3, which is another conventional water-proof zipper 9. The conventional water-proof zipper 9 has two cloth tapes 91, and adjacent edges of the two cloth tapes 91 each have a core portion 911. Each of the core portions 911 is respectively coupled with a row of fastening elements 92. The conventional watertight zipper 9 also has an anti-permeability gel 93 attached to the two rows of fastening elements 92 in a state of being fastened, and is bet to cover the two rows of fastening elements 92 and penetrate the two rows of fastening elements. Clearance of 92. An embodiment similar to the conventional water-tight zipper 9 has been disclosed in the patent application of ROC Publication No. 201402032 “Clip-type fastening element zipper with a water-tight structure”.

Although the conventional water-proof zipper 9 has a gap G between the two rows of fastening elements 92 that are engaged with each other, it is convenient to smoothly operate the fastening or separation of the two rows of fastening elements 92; however, in When the impervious colloid 93 is molded, the impervious colloid 93 is injected and penetrated into the gap between the two rows of fastening elements 92, which is difficult to be cut and separated by a cutter.

In addition, the outermost end of the fastening element 92 on one of the cloth strips 91 of the conventional water-proof zipper 9 and the core portion 911 of the other cloth strip 91 also have a clear space, and the water-proof gel The area covered by 93 above the two rows of fastening elements 92 is also only a thin layer, so the conventional water-proof zipper 9 has significantly different waiting time for different parts of the anti-seepage colloid 93 to cool down. Distance, and the cost of forming the extension 832 is high due to the large amount of materials used. In addition, the cloth tape 91 of the conventional water-proof zipper 9 also needs to be additionally affixed with waterproof tape or sprayed with water-repellent agent, so the overall manufacturing process is relatively tedious and cumbersome.

In view of this, the conventional waterproof zippers do still need to be improved.

In order to solve the above problems, an object of the present invention is to provide a water-blocking zipper, whose impermeable gel can be easily cut and separated by a cutter, and its corresponding chain teeth can be smoothly engaged or separated.

A secondary object of the present invention is to provide a water-blocking zipper, in which only a small part of the impervious gel will extend to the other side of the second cloth tape, and the thickness of each part of the impervious gel will not be greatly different. The moldability of the colloid is better controlled.

Another object of the present invention is to provide a water-blocking zipper. When the water-blocking zipper is bent under an external force, the water-blocking zipper can still be firmly closed, and it is not easy to slip and open the chain teeth due to bending.

Another object of the present invention is to provide a water blocking zipper, which can form a waterproof structure of a tape and a sprocket together to simplify the manufacturing process.

The invention defines that the short side extension direction of the water blocking zipper is the X direction, the long side extension direction of the water blocking zipper is the Y direction, and the thickness extension direction of the water blocking zipper is the Z direction; the X, Y, and Z directions are mutually positive. Cross, and in the Z direction, define "up" as shown in Figure 5 above, and define "down" as shown below. And, the side end surfaces adjacent to each other in the X direction are “inside”, and the side end surfaces facing away from each other are “outside”.

The water-blocking slide fastener of the present invention comprises: two cloth tapes, each of which has a core portion adjacent to each other, and each of the cloth tapes has an upper surface and a lower surface opposite to each other; In the two core portions, the plurality of sprocket teeth are staggered, and any two staggered sprocket teeth are pulled only by the water blocking. A middle line of the chain passes tightly and a gap is formed between the other parts; two impervious colloids cover the upper surface of the two tapes and the plurality of chain teeth, respectively, and fill the plurality of chains. When the teeth are staggered, the two impervious colloids respectively have an abutment surface at the center line to form a detachable close contact; and a slider for engaging or separating the plurality of sprocket teeth.

According to this, in the water-blocking zipper of the present invention, the impermeable gel covers the two fabric tapes and the plurality of fastener elements, so that the water-blocking fastener has a water-blocking effect, and the plurality of fastener elements only pass through the midline. The tight contact is formed so that the impervious colloid does not penetrate at the abutting points of the plurality of sprockets, so it is convenient to divide the impervious colloid, and the corresponding sprockets can also be smoothly engaged or separated. Furthermore, the water-blocking zipper can form a waterproof structure of the tape and the chain teeth together to simplify the manufacturing process.

Wherein, the two ends of each of the sprocket teeth respectively have a body and a head, the body is combined with the cloth belt, the head is located between the two core portions, and each of the sprocket teeth has a neck located between the body and the Between the heads, and the free end of the heads can abut the opposite core portion. In this way, when the plurality of sprocket teeth are engaged, the heads of the respective sprocket teeth can abut the core portion of the opposite tape, so the bonding stability is better, and the gap at this place is extremely small, so that when the impermeable gel is formed, The impermeable gel does not easily pass through to the other side of the two tapes, so the thickness of each part of the impermeable gel does not differ too much, so that the moldability of the impermeable gel is better controlled and it has improved manufacturing Convenience.

Each of the sprocket teeth has an upper tooth and a lower tooth connected, the upper tooth is connected to the upper surface of the cloth tape, the lower tooth is connected to the lower surface of the cloth tape, and the upper tooth may have a slow-down surface so that The upper teeth decrease in thickness from the neck adjacent to the body toward the free end of the head. In this way, the area covered by the impermeable colloid can increase the thickness toward the free end of the head, which has the effect of improving the formability and durability of the impermeable colloid, and can increase the contact area of the two impermeable colloids. The area has the effect of improving the water blocking effect of the overall water blocking zipper.

Wherein, the slow-down surface can be convexly arc-shaped, and the slow-down surface is connected to the free end of the body and the head. In this way, it has the effect that both the head of the sprocket and the impermeable gel can be easily formed. fruit.

The height difference between the two ends of the descent surface is preferably more than half of the maximum thickness of the upper teeth. In this way, the thickness change of the second impervious colloid is relatively smooth, and it has the effect of improving the formability and durability of the impervious colloid. In addition, the abutment surface of the second impervious colloid can also have a thicker thickness and is easier to adhere. With the effect of improving water blocking effect.

The body of the upper teeth may be shorter than the body of the lower teeth. In this way, there is more space behind the body of the upper teeth for the impervious gel to increase the strength of the outer part of the impervious gel and has the effect of improving the durability of the water blocking zipper.

Wherein, the impermeable gel has a first tooth-covering part covering at least the neck of the sprocket and the upper end of the body, and the impermeable gel has a second tooth-covering part connected to the first tooth-covering part and covering the body of the sprocket. Outside, the volume of the second tooth covering portion is preferably increased from bottom to top. In this way, it has the effect of improving the durability of the water blocking zipper.

Wherein, the anti-permeability gel may have a tape covering part covering the upper surface of the tape, one end of the tape covering part is connected to the second tooth covering part, and the other end is connected to the lower surface of the tape, so that the tape The outer side is covered with this covering tape portion. In this way, not only the outer side of the cloth tape can have a water blocking effect, but also the anti-permeability gel can not be easily lifted from the outer side of the tape, and it has the effect of improving the durability of the water blocking zipper.

Wherein, the head and neck of the upper teeth may be misaligned with the head and neck of the lower teeth and do not completely overlap. In this way, when the water blocking zipper is bent by an external force, the situation that the plurality of fastener elements cannot be stably fastened and exploded can be avoided, which has the effect of improving the binding stability of the plurality of fastener elements.

Wherein, the body of the upper teeth overlaps with the body of the lower teeth at a position other than the core portion. In this way, the plurality of sprocket teeth can be easily formed.

The upper teeth and the lower teeth may be left-right symmetrical, and the upper teeth and the lower teeth may form an offset without completely overlapping. In this way, the plurality of sprocket teeth can be easily formed, and the situation that the plurality of sprocket teeth cannot be stably buckled and exploded when the water blocking zipper is bent by external force can be avoided. It has the effect of improving the bonding stability of the several sprocket teeth.

Wherein, the head may have a groove, and two sides of the sprocket may each have a shoulder, which is connected to the body and protrudes between the two cores, and the shoulders of each sprocket penetrate into The grooves of the other sprocket that are interlocked with each other. In this way, it has the effect of further improving the bonding stability of the plurality of sprocket teeth.

Each of the impervious gels may have a plurality of deformation spaces, and the plurality of deformation spaces are preferably located between any two adjacent chain teeth on the same tape. In this way, the elastic deformation capacity of each of the impermeable gels can be further improved, so that the overall water blocking zipper can be more flexible.

〔this invention〕

1‧‧‧ tape

1a‧‧‧upper surface

1b‧‧‧ lower surface

11‧‧‧ Ruibei

2‧‧‧ sprocket

2a‧‧‧ Upper teeth

2b‧‧‧ lower teeth

21‧‧‧ Ontology

22‧‧‧Head

23‧‧‧ neck

24‧‧‧ Slowly descending

25‧‧‧Groove

26‧‧‧Shoulder

3‧‧‧ Impervious Colloid

31‧‧‧ abutment

32‧‧‧The first tooth cover

33‧‧‧Second tooth cover

34‧‧‧ Covering Department

35‧‧‧ deformation space

4‧‧‧ slider

E1‧‧‧Side edge

E2‧‧‧Side edge

G‧‧‧ Clearance

L‧‧‧ Midline

S‧‧‧Cutter

〔Usually〕

8‧‧‧ Impervious Water Drill

81‧‧‧ tape

811‧‧‧ Core

82‧‧‧ Fastening element

821‧‧‧Groove

83‧‧‧Impermeable gel

831‧‧‧ Overlay

832‧‧‧ extension

9‧‧‧ Impervious Water Drill

91‧‧‧ tape

911‧‧‧Core

92‧‧‧ Fastening element

93‧‧‧Impermeable gel

G‧‧‧Gap

H‧‧‧Pitch

W‧‧‧ Thick

[Fig. 1] A plan view of a conventional water blocking slide fastener.

[Fig. 2] A side sectional view of a conventional water blocking slide fastener.

[Figure 3] A plan view of another conventional water-blocking slide fastener.

[Fig. 4] A perspective view of an uncoated impervious colloid according to the first embodiment of the present invention.

[FIG. 5] A side view of a sprocket according to a first embodiment of the present invention.

[FIG. 6] A partial plan view of the first embodiment of the present invention that has not been covered with an impervious colloid.

[Fig. 7] A sectional view taken along line A-A in Fig. 6.

[FIG. 8] An exploded sectional view of the first embodiment of the present invention.

[FIG. 9] A partial perspective view of the first embodiment of the present invention.

[Fig. 10] A plan view of the first embodiment of the present invention.

[FIG. 11] A partial perspective view of the first embodiment of the present invention having another type of impermeable gel.

[Fig. 12] A partial top view of the second embodiment of the present invention that has not been covered with an impervious colloid.

In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes the preferred embodiments of the present invention in detail with the accompanying drawings, as follows: Please refer to sections 4, 6, and 10 As shown in the figure, it is the first embodiment of the water blocking zipper of the present invention, which includes two cloth belts 1, a plurality of sprockets 2, two impermeable gels 3, and a slider 4. The plurality of sprockets 2 are combined with the The two cloth belts 1 and the two impermeable gels 3 cover the two cloth belts 1 and the plurality of sprocket teeth 2 respectively, and the slider 4 is used to make the plurality of sprocket teeth 2 interlocked or separated. The water blocking zipper has a center line L passing through the center of the short side direction.

Please refer to FIGS. 4 and 5, each of the tapes 1 has a strip shape and has an upper surface 1 a and a lower surface 1 b opposite to each other. The longitudinal directions of the two cloth strips 1 may be parallel, and adjacent sides of the two cloth strips 1 may have a core portion 11 respectively.

Please refer to FIG. 4 and FIG. 6 again, the plurality of sprocket teeth 2 are respectively coupled to the two core portions 11 of the two cloth belts 1, and the plurality of sprocket teeth 2 are detachably interlaced and interlocked, and any two are interlaced. The fastened sprocket 2 is tightly formed only at the passing point of the center line L, and the remaining part has a gap G.

In detail, two ends of each of the sprocket teeth 2 respectively have a body 21 and a head 22. The body 21 is coupled to the cloth tape 1, and the head 22 is located between the two core portions 11. Each of the sprocket 2 has a neck 23 between the body 21 and the head 22, and the sprocket 2 on one of the cloth belts 1 is fastened by the head 22 to any two phases of the other cloth belt 1. When the neck 23 of the sprocket 2 is adjacent, the free end of the head 22 preferably abuts the opposite core portion 11 to improve the bonding stability. The body 21 may be a triangle, a rectangle, a circle, and the like, and the head 22 may be a semicircular, trapezoid, or pointed shape. In this embodiment, the body 21 is a rectangle, and the head 22 is It has a rounded tip.

5 and 6, each of the sprocket 2 has an upper tooth 2a and a lower tooth 2b connected to each other, the upper tooth 2a is connected to the upper surface 1a of the cloth tape 1, and the lower tooth 2b is connected to the cloth This lower surface 1b of the belt 1. The upper tooth 2a has a descent surface 24 such that the upper tooth 2a is adjacent to the neck 23 The body 21 decreases in thickness toward the free end of the head 22. Preferably, the slow-down surface 24 can be convexly curved; the slow-down surface 24 can be connected to the free end of the body 21 and the head 22; the height difference between the two ends of the slow-down surface 24 can exceed the upper tooth 2a. Half of the maximum thickness; in addition, the body 21 of the upper tooth 2a may be shorter than the body 21 of the lower tooth 2b.

In addition, the head 22 and the neck 23 of the upper tooth 2a and the head 22 and the neck 23 of the lower tooth 2b may be misaligned and not completely overlap. In this embodiment, the head 22 and the neck 23 of the upper teeth 2a can be selected to be biased to one side, and the head 22 and the neck 23 of the lower teeth 2b are biased to the other side, so that the The head 22 and the neck 23 may be misaligned with the head 22 and the neck 23 of the lower tooth 2b and may not completely coincide with each other; in other words, one of the side edges E1 of the head 22 and the neck 23 of the upper tooth 2a Between the head 22 of the lower tooth 2b and the two side edges E2 of the neck 23, the head 22 of the upper tooth 2a and the other side edge E1 of the neck 23 are not connected to the head 22 of the lower tooth 2b And any side edge E2 of the neck 23 overlaps. In addition, the main body 21 of the upper teeth 2a can be overlapped with the main body 21 located on the lower teeth 2b at a position other than the core portion 11, so that the plurality of sprocket teeth 2 can be easily formed.

Please refer to FIGS. 6 and 7, each of the impermeable colloids 3 is formed by solidifying a molten polymer material, and each of the impermeable colloids 3 has elasticity and water blocking effect after solidification. In the forming method of the two impermeable colloids 3, the plurality of fastener elements 2 are first engaged with each other, and then, for example, an extrusion method is used to coat the molten polymer material on the upper teeth of the plurality of fastener elements 2. 2a and the upper surface 1a of the two cloth belts 1 and the gap G infiltrated into the gaps between the plurality of sprocket teeth 2 and other parts; after the molten polymer material is solidified, a cutter S is used along the center line The L-cut allows the solidified polymer material to be divided into the two impervious colloids 3, and the inner sides of the two impervious colloids 3 are closely adhered by abutment surfaces 31, respectively.

Among them, since the plurality of sprocket teeth 2 only form close contact with the middle line L, as long as the cutter S cuts along the middle line L, the solidified polymer material can be smoothly divided into the two impermeable colloids. 3. When the plurality of chain teeth 2 are separated from each other, the two impervious colloids 3 can also be smoothly separated (as shown in FIG. 8). Furthermore, when the plurality of sprocket elements 2 are fastened by the head 22 and the neck portion 23, each of the sprocket elements 2 The free end of the head 22 of 2 can abut the core portion 11 of the tape 1, so the gap at the abutment is extremely small, so that when the impermeable gel 3 is formed, the impermeable gel 3 cannot easily extend to the The lower surface 1b of the second cloth tape 1, so the thickness difference between the parts of the impervious colloid 3 is small and does not change suddenly, so that the moldability of the impervious colloid 3 is better controlled, and it is less likely to be damaged during use. . In addition, since the solidified polymer material covers the slow-down surface 24 of the upper teeth 2a, the two impermeable colloids 3 can be smoothly formed and have better durability.

In detail, please refer to FIG. 6 and FIG. 8. The impermeable gel 3 has a first tooth covering portion 32 covering at least the neck 23 of the sprocket 2 and the upper end of the body 21 (the first tooth covering in this embodiment). The portion 32 also extends to cover a portion of the head portion 22. The abutting surface 31 is formed on the inner side of the first tooth covering portion 32, that is, an end of the first tooth covering portion 32 farther from the body 21. Wherein, since the first tooth covering portion 32 covers the slow-down surface 24 of the upper tooth 2a, the first tooth covering portion 32 can increase in thickness toward the free end of the head portion 22, except that In addition to the effects of formability and durability, the abutting area of the two abutting surfaces 31 can be increased to improve the water blocking effect of the overall water blocking zipper. In addition, the slow-down surface 24 can be convexly curved, so that both the head 22, the neck 23, and the first tooth-covering portion 32 of the sprocket 2 can be easily formed. In particular, when the When the height difference between the two ends of the slow-down surface 24 exceeds half of the thickness of the upper tooth 2a, the thickness change of the first tooth-covering portion 32 is smoother, and it is easier to control the moldability of the first tooth-covering portion 32, so that The first tooth-covering portion 32 will not have a large thickness difference. In addition, the effect of increasing the contact area of the two contact surfaces 31 will be more obvious.

The impervious gel 3 has a second tooth covering portion 33 connected to the first tooth covering portion 32 and covering the outside of the body 21 of the sprocket 2. In this embodiment, the length of the body 21 can be reduced from bottom to top, and the body 21 with the upper teeth 2a is shorter than the body 21 of the lower teeth 2b, so that the second tooth covering portion 33 is not too thin. And the volume of the second tooth covering portion 33 can be increased from bottom to top, so as to give the second tooth covering portion 33 a better strength, so the second tooth covering portion 33 is not easy to be cracked or peeled off after a period of use. To improve the durability of the overall water blocking zipper.

The impermeable gel 3 may have a tape covering portion 34 covering the upper surface 1 a of the tape 1. One end of the tape covering portion 34 is connected to the second tooth covering portion 33, and the other end is preferably connected to the lower portion of the tape 1. The surface 1b allows the outer side of the tape 1 to be covered by the tape covering portion 34. In this way, not only the outer side of the cloth tape 1 can have a water blocking effect, but also the impermeable gel 3 can not be easily lifted from the outer side of the cloth tape 1 to improve the durability of the water blocking zipper. Furthermore, the cloth tape 1 can have a waterproof effect when the impermeable gel 3 is formed, and it is not necessary to arrange another manufacturing process to give the cloth tape 1 a waterproof effect, so the overall manufacturing process can be simplified.

Please refer to FIGS. 6, 9, and 10. According to the foregoing structure, the plurality of sprocket teeth 2 can be engaged with each other or separated from each other by pulling the slider 4. When the plurality of sprocket teeth 2 are engaged with each other, the abutment surface 31 of the two impervious colloids 3 can be closely attached, and the gap G between the plurality of sprocket teeth 2 is also filled by the two impervious colloids 3. , So that liquid cannot penetrate from one surface of the water-blocking zipper to the other surface through the plurality of chain teeth 2. In particular, since the plurality of sprocket teeth 2 only form close contact with the middle line L and the rest has a gap G, the solidified polymer material can be smoothly divided into the two as long as it is cut along the center line L. The impervious colloid 3 can smoothly engage or separate the plurality of sprocket teeth 2. Furthermore, since the free end of the head 22 of each sprocket 2 is selected to abut the core portion 11 of the opposite tape 1 in this embodiment, only a small part of the impermeable gel 3 will extend to the other side of the second tape 1 In addition, the thickness of each part of the impermeable colloid 3 will not be too different, so that the moldability of the impermeable colloid 3 is better controlled, and it is less likely to be damaged during use. In addition, in this embodiment, the head 22 and the neck 23 of the upper tooth 2a are selected to be misaligned with the head 22 and the neck 23 of the lower tooth 2b, so that the plurality of sprocket 2 are interlocked. At this time, the plurality of sprocket teeth 2 can be stopped from each other by dislocated parts; in this way, when the water blocking zipper is bent by an external force, the plurality of sprocket teeth 2 can still maintain the interlocking engagement firmly, and it is not easy to bend. When folded, the two sprocket teeth are slipped and shifted apart to form an open shape.

It is worth mentioning that, referring to FIG. 11, each of the impermeable gels 3 may have a plurality of deformation spaces 35, and the plurality of deformation spaces 35 are generally located on the same tape 1 respectively. Between any two adjacent sprocket 2. In this embodiment, the plurality of deformation spaces 35 are mainly located in the first tooth covering portion 32, one end of each of the deformation spaces 35 does not extend to the abutment surface 31, and the other end preferably extends to the second tooth covering.部 33; In this way, the elastic deformation ability of each of the impervious gels 3 can be further improved, so that the overall water-blocking zipper can be softer, it is not easy to be too stiff because of the two impervious gels 3, and it can also improve pulling The slider 4 (labeled in FIG. 10) is used to control the smoothness of the plurality of sprocket teeth when the two phases are engaged or separated.

Please refer to FIG. 12, which is a second embodiment of the water blocking zipper according to the present invention. The upper teeth 2 a and the lower teeth 2 b of each sprocket 2 may be left and right symmetrical respectively, and the upper teeth 2 a and the lower teeth are symmetrical. 2b may form an offset and not completely overlap, so that the plurality of sprocket teeth 2 can be easily formed, and when the plurality of sprocket teeth 2 are engaged with each other, the plurality of sprocket teeth 2 can be stopped by each other by dislocated parts; When the water-blocking zipper is bent under external force, the plurality of sprocket teeth 2 can still maintain the phase engagement firmly, and it is not easy for the plurality of sprocket teeth 2 to slip apart due to bending and become open. Preferably, the lower surface of the head 22 may have a groove 25, and two sides of the sprocket 2 may each have a shoulder portion 26, which is connected to the body 21 and protrudes to the second core portion 11 In this way, when the plurality of sprocket teeth 2 are engaged with each other, the shoulders 26 of each sprocket teeth 2 can penetrate into the grooves 25 of the other sprocket teeth 2 that are interlacedly engaged to further enhance the The combination and stability of several sprocket teeth 2 enables the water blocking zipper to maintain a closed shape firmly.

In summary, in the water blocking zipper of the present invention, the impervious gel can be easily cut and separated by the cutter, and the plurality of sprocket teeth can be smoothly engaged or separated; in addition, only a small part of the impervious gel can Extending to the other side of the two cloth tapes, and the thickness of each part of the impervious colloid will not be much different, so the moldability of the impervious colloid is better controlled, and it is less likely to be damaged during use. When bent by external force, the water-blocking zipper can still be firmly closed, and the chain teeth will not slip out of position due to bending and become open. Furthermore, the water-blocking zipper can form a waterproof structure of the tape and the chain teeth together to simplify the manufacturing process.

Although the present invention has been disclosed using the above preferred embodiments, it is not intended to limit the present invention. Invention, any person skilled in the art can make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention, which still belongs to the technical scope protected by the present invention. Therefore, the protection scope of the present invention shall be regarded as the attached application. The patent scope shall prevail.

Claims (13)

A water blocking zipper comprises: two cloth tapes, each of which has a core portion adjacent to each other, and each of the cloth tapes has an upper surface and a lower surface opposite to each other; a plurality of sprocket teeth are respectively combined with the two In the core part, the several sprockets are staggeredly connected, and any two staggered sprockets are tightly connected only at a middle line of the water blocking zipper, and there is a gap between the remaining parts; two impermeable gels, the Two impervious colloids respectively cover the upper surface of the two cloth belts and the plurality of sprockets, and fill the gaps when the plurality of sprockets are staggered. The two impervious colloids each have an abutment surface at the center line. Forming a separable close-fit; and a slider for engaging or separating the plurality of sprocket teeth. The water-blocking zipper according to item 1 of the scope of patent application, wherein each end of each of the sprocket teeth has a body and a head, the body is combined with the cloth tape, and the head is located between the two core portions. Each of the sprocket teeth has a neck portion between the body and the head portion, and the free end of the head portion abuts the opposite core portion. The water-blocking zipper according to item 2 of the scope of patent application, wherein each of the sprocket teeth has an upper tooth and a lower tooth connected, the upper tooth is connected to the upper surface of the cloth tape, and the lower tooth is connected to the cloth tape. On the lower surface, the upper tooth has a slow-down surface, so that the upper tooth decreases in thickness from the neck adjacent to the body toward the free end of the head. The water-blocking zipper according to item 3 of the scope of patent application, wherein the slow-down surface is convexly curved, and the slow-down surface is connected to the main body and the free end of the head. The water-blocking zipper according to item 3 of the scope of patent application, wherein the height difference between the two ends of the slow-down surface exceeds half of the maximum thickness of the upper teeth. The water-blocking zipper according to item 2 of the scope of patent application, wherein each of the sprocket teeth has an upper tooth and a lower tooth connected, the upper tooth is connected to the upper surface of the cloth tape, and the lower tooth is connected to the cloth tape. On the lower surface, the body of the upper teeth is shorter than the body of the lower teeth. The water-blocking zipper according to item 6 of the patent application scope, wherein the impermeable gel has a first tooth-covering part covering at least the neck and upper end of the sprocket, and the impermeable gel has a second tooth-covering part The first tooth covering portion is connected to cover the outside of the body of the sprocket, and the volume of the second tooth covering portion increases from bottom to top. The water-blocking zipper according to item 2 of the scope of the patent application, wherein the anti-permeability gel has a tape covering part covering the upper surface of the tape, one end of the tape covering part is connected to the second tooth covering part, and the other end is connected To the lower surface of the tape, so that the outside of the tape is covered by the tape covering portion. The water-blocking zipper according to item 2 of the scope of patent application, wherein each of the sprocket teeth has an upper tooth and a lower tooth connected, the upper tooth is connected to the upper surface of the cloth tape, and the lower tooth is connected to the cloth tape. On the lower surface, the head and neck of the upper tooth are misaligned with the head and neck of the lower tooth and do not completely overlap. The water-blocking zipper according to item 9 of the scope of patent application, wherein the body of the upper teeth overlaps with the body of the lower teeth at a position other than the core portion. The water-blocking zipper according to item 2 of the scope of patent application, wherein each of the sprocket teeth has an upper tooth and a lower tooth connected, the upper tooth is connected to the upper surface of the cloth tape, and the lower tooth is connected to the cloth tape. On the lower surface, the upper teeth and the lower teeth are left-right symmetrical, and the upper teeth and the lower teeth are offset and do not completely coincide. The water-blocking zipper according to item 11 of the scope of patent application, wherein the head has a groove, and the two sides of the sprocket each have a shoulder portion, and the shoulder portion is connected to the body and protrudes to the second core portion. In between, the shoulders of each of the sprocket teeth penetrate into the grooves of the other sprocket teeth that are interlaced and fastened. The water-blocking zipper according to any one of claims 1 to 12, wherein each of the impermeable gels has a plurality of deformation spaces, and the plurality of deformation spaces are adjacent to any two of the same cloth tape respectively. Between the teeth.