TWI808401B - Waterproof zipper - Google Patents

Abstract

A waterproof zipper includes a waterproof unit, a sliding unit, and a stop unit. The waterproof unit includes two water-retaining belts and a plurality of chain teeth. Each water-retaining belt has a longitudinally arranged close side edge. The close-fitting side is a tooth-like structure formed by a plurality of concave parts and a plurality of convex parts. The sliding unit includes a chain head slidable on the second water-retaining belt, and the stop unit is arranged on the second water-retaining belt. One end is surrounded by the second-speed water belt frame, which includes a stop body and two clamping bodies. When the plurality of sprocket teeth of the two water-retaining belts are separated, they will drive the two tight sides to separate from each other. When the plurality of sprocket teeth of the water-retaining belt are coupled with each other, the two close side edges are driven to abut against each other, and the plurality of concave portions and the plurality of convex portions are in close contact.

Description

waterproof zipper

The invention relates to a zipper, especially a waterproof zipper.

A zipper is a component that combines and separates two pieces of fabric. It is commonly used in clothing, suitcases, handbags, tents, and sleeping bags. Among them, there is a waterproof zipper structure to isolate external liquids.

Please refer to Fig. 1, in the Republic of China patent I566715, disclose a kind of waterproof zipper, this waterproof zipper is made up of a waterproof cloth 11, and plural chain teeth 12, this waterproof cloth 11 is provided with an abutting surface 111, and plural perforation 112, this plural chain tooth 12 is arranged on this plural perforation 112, in order to fix the position of this plural chain tooth 12 on this waterproof cloth 11, and can provide a chain head (not shown in the figure) to connect two The two waterproof cloths 11 are abutted or separated, and when the abutting surfaces 111 of the two waterproof cloths 11 are abutted against each other, liquid can be prevented from passing through.

Although the prior art discloses a waterproof zipper, it still has the following disadvantages in actual use:

1. Easy to wear out:

The abutting surface 111 of the conventional waterproof cloth 11 is arranged on a plane, and when the sprockets move and the two waterproof cloths 11 are abutted or separated from each other, the abutting surface 111 will be pulled. Although the abutting surface 111 has some elasticity, it will still wear out after long-term use.

2. Poor flatness:

Generally, the plurality of chain teeth 12 of a waterproof zipper are directly arranged on the waterproof cloth 11, and only the plurality of perforations 112 are used to fix their positions. The joint surface 111 is thicker than other parts of the waterproof cloth 11 , resulting in poor surface smoothness of the waterproof zipper.

Three, the tightness is poor:

The abutting surface 111 of the conventional waterproof fabric 11 is arranged flat, and the plurality of chain teeth 12 are arranged at intervals. When the abutting surfaces 111 of the two waterproof cloths 11 abut against each other, the thrusts exerted by the plurality of sprockets 12 on the abutting surfaces 111 are spaced apart. The abutting surface 111 arranged on a plane cannot disperse the thrust exerted by the plurality of tooth chains, resulting in spaced pressure points and stress points on the abutting surfaces, which easily causes gaps between the abutting surfaces 111 that are in contact with each other. , the liquid is easy to seep into the gap, and cause the disadvantage of waterproofing.

Therefore, how to reduce the wear and tear of the waterproof cloth, make the waterproof zipper have better flatness, and at the same time improve the tightness of the waterproof zipper corresponding to the stress exerted by the plurality of chain teeth is an urgent goal for relevant technical personnel.

In view of this, the object of the present invention is to provide a waterproof zipper, which includes a waterproof unit, a sliding unit, and a stopper unit.

The waterproof unit includes two water-retaining belts and a plurality of chain teeth arranged at intervals on the two water-retaining belts. Each water-retaining belt has a longitudinally arranged close side, and the two close sides are a tooth-like structure formed by a plurality of concave parts and a plurality of convex parts.

The sliding unit includes a chain head that can slide on the two water retaining belts. The chain head has two base plates arranged at intervals, a middle column connected to the two base plates to separate the plurality of chain teeth, and multiple side walls separately arranged on both sides of the center pillar to couple the plurality of chain teeth.

The stop unit is arranged at one end of the two water retaining belts and is surrounded by the two water retaining belt frames, and includes a stop body, and two clamping bodies whose top ends are connected to the stop body, and the bottom ends of the two clamping bodies are respectively connected to the top ends of the two tight sides.

When the plurality of chain teeth of the two water retaining belts are separated, the two close sides are separated from each other, and when the plural chain teeth of the two water retaining belts are coupled with each other, the two joint sides are driven to abut against each other and the plurality of concave parts and the plurality of convex parts are correspondingly tightly abutted.

Yet another technical measure of the present invention is that the positions of the plurality of chain teeth provided on the above-mentioned two water retaining belts correspond to the positions of the plurality of protrusions.

Another technical means of the present invention is that each of the above-mentioned water-retaining belts has two correspondingly arranged surfaces connected to the close-fitting sides, each sprocket has two coupling parts provided on the two surfaces, and at least one connecting part pierced through the water-retaining belt and connected to the two coupling parts.

Another technical means of the present invention is that each of the above-mentioned water retaining belts has a plurality of setting grooves arranged on the two surfaces, and a plurality of holes penetrating the two surfaces and connecting with the two setting grooves, the plurality of connecting parts are respectively arranged in the plurality of holes, and the plurality of coupling parts are respectively arranged in the plurality of setting grooves to fix the positions of the plurality of chain teeth on the two water retaining belts.

Yet another technical means of the present invention is that each of the above-mentioned water-retaining belts further has a plurality of retaining walls arranged on the two surfaces, the plurality of retaining walls are respectively located in the plurality of installation grooves and adjacent to the close-fitting side, and the plurality of chain teeth are respectively connected with the plurality of retaining walls so as to push the plurality of retaining walls by external force and make the two water-retaining bands lean against each other.

Another technical means of the present invention is that the top ends of the above two clamping bodies are spaced apart from each other, so that the stopper body and the two clamping bodies can define an accommodating area, the central column can enter the accommodating area from the bottom ends of the two clamping bodies, and the plurality of side walls can push the two clamping bodies to abut against the central column, so that the shape of the accommodating area matches the shape of the central column.

Yet another technical means of the present invention is that the thicknesses of the above-mentioned two clamping bodies and the stopper body correspond to the distance between the two substrates, so that when the center column enters the accommodating area, the two substrates can be in close contact with the two clamping bodies and the stopper body.

Yet another technical measure of the present invention is that two guide slopes are respectively provided at the bottom ends of the above-mentioned two clamping bodies.

Another technical means of the present invention is that the materials of the above-mentioned two water-retaining belts, the plurality of chain teeth, the chain head, the stop body, and the two clamping bodies are selected from one of thermoplastic polyurethane (Thermoplastic Urethane, TPU), polyol (Polyol), aliphatic isocyanate (Aliphatic Isocyanate), diol compound (Diol), and combinations thereof.

Another technical means of the present invention is that the materials of the above-mentioned two water retaining belts, the plurality of chain teeth, the chain head, the stop body, and the two clamping bodies contain silver ions or titanium dioxide antibacterial materials.

The beneficial effect of the present invention is that the arrangement position of the plurality of chain teeth corresponds to the position of the plurality of protrusions of the water retaining belt, so that the plurality of chain teeth can exert a thrust on the plurality of protrusions of the water retaining belt, while the plurality of recesses are not pushed by the plurality of chain teeth, and can fully accept the force of the corresponding protrusions, which can further improve the tightness between the two close sides. The surface structure of the waterproof zipper is smoother, and the plurality of recesses in the tooth-shaped sealing side can reduce the degree of expansion and contraction during bending, thereby reducing the wear and tear of the water-retaining belt.

11: tarpaulin

111: contact surface

112: perforation

12: sprocket

3: waterproof unit

31: water retaining belt

311: surface

312: close side

313: concave part

314: convex part

315: Setting slot

316: hole

317: wall

32: sprocket

321: coupling part

322: connection part

4: sliding unit

41: chain head

411: Substrate

412: center column

413: side wall

5: Stop unit

51: stop body

511: Top block

52: sandwich body

521: guide bevel

522: tight joint

523: loose joint

53: Containment area

54: Prominence

55: Positioning structure

551: first surface

552: second surface

56: Setting hole

A: Planar tight joint

B: Curvature

X: line segment

Y: line segment

Fig. 1 is a three-dimensional schematic diagram illustrating a waterproof slide fastener disclosed in the Republic of China patent I566715; Fig. 2 is a schematic front view, which is one of the first preferred embodiment of a waterproof slide fastener of the present invention, illustrating a structural diagram of a waterproof unit; Fig. 3 is a schematic front view, illustrating a schematic structural view of a stopper unit arranged at one end of two water retaining belts in the first preferred embodiment; Fig. 4 is a partial three-dimensional schematic view illustrating a partial three-dimensional appearance of a water retaining belt in the first preferred embodiment; Fig. 5 is a schematic cross-sectional view illustrating a cross-sectional view of a water retaining belt provided with a hole and two setting grooves in the first preferred embodiment; Fig. 6 is a partial cross-sectional view illustrating a partial cross-sectional appearance of a sprocket set on the water retaining band in the first preferred embodiment; Fig. 7 is a perspective view illustrating a three-dimensional state of a chain head in the first preferred embodiment Sample; Fig. 8 is a partial three-dimensional schematic diagram, illustrating in this first preferred embodiment, the partial three-dimensional view of partial waterproof unit and this stopper unit; Fig. 9 is a schematic diagram, illustrates the close side of tooth-like structure of the present invention, and the comparison figure of the close side of general planar state; Fig. 10 is a partial three-dimensional schematic view, is one second preferred embodiment of a kind of waterproof zipper of the present invention, illustrates the local three-dimensional appearance of a water-retaining belt; Fig. 11 is a schematic sectional view, illustrates in this second preferred embodiment, this water-retaining belt Fig. 12 is a schematic sectional view illustrating a sectional view of a sprocket provided on the water retaining belt in the second preferred embodiment; Fig. 13 is a schematic front view, which is a third preferred embodiment of a waterproof zipper of the present invention, illustrating a front view of a stopper unit; Fig. 14 is a schematic side view, illustrating a side view of the stopper unit in the third preferred embodiment; Example, illustrating the front view of a stop unit; and Fig. 16 is a schematic side view illustrating the side view of the stopper unit in the fourth preferred embodiment.

The features and technical contents of the relevant patent applications of the present invention will be clearly presented in the following detailed descriptions of four preferred embodiments with reference to the drawings. Before proceeding with the detailed description, it should be noted that like elements are denoted by the same reference numerals.

Referring to FIG. 2 and FIG. 3 , it is a first preferred embodiment of a waterproof zipper of the present invention. The waterproof zipper includes a waterproof unit 3 , a sliding unit 4 , and a stopper unit 5 .

The waterproof unit 3 includes two water-retaining belts 31 and a plurality of sprocket teeth 32 arranged at intervals on the two water-retaining belts 31. Each water-retaining belt 31 has two correspondingly arranged surfaces 311, a vertically arranged and closely connected side edge 312 connected to the side edges of the two surfaces 311, and the two closely-connected side edges 312 are tooth-shaped structures formed by a plurality of concave parts 313 and a plurality of convex parts 314. In the first preferred embodiment, each concave part 313 and convex part The shape of 314 is trapezoidal. In practice, the plurality of recesses 313 and the plurality of protrusions 314 can use other shapes, which should not be limited thereto. Wherein, in FIG. 2 , the water-retaining belt 31 on the upper left side and the lower middle side does not draw a plurality of sprocket teeth 32 , and can completely show the close side 312 of the tooth-like structure.

Referring to Fig. 4 and Fig. 5, the surface 311 of each water-retaining belt 31 is provided with a plurality of setting grooves 315 at intervals, and each water-retaining belt 31 is provided with a plurality of holes 316. 5 is used to accommodate the sprocket 32 and thereby fix the sprocket 32 at the position of the water retaining belt 31.

Referring to Fig. 2, Fig. 4, and Fig. 6, each chain tooth 32 has two coupling parts 321 which are arranged on the two surfaces 311, and two connecting parts 322 which are arranged in the hole 316 of the water retaining belt 31 and are connected with the two coupling parts 321, wherein the plurality of setting grooves 315 are arranged at intervals, and the part of the coupling part 321 The volume is accommodated in the setting groove 315, which not only can fix the position of the plurality of chain teeth 32 on the second water retaining belt 31, but also can reduce the height of the coupling part 321 protruding from the surface 311, so that the surface structure of the waterproof zipper is smoother. The connecting portion 322 of the plurality of coupling portions 321 can push or pull against the plurality of convex portions 314 by pushing against the hole 316, and can abut against the corresponding concave portion 313. In addition, since the concave portion 313 of the close side 312 does not receive the thrust of the sprocket 32, the multiple concave portion 313 can fully accept the pushing force of the corresponding plurality of convex portions 314, so that no stress will be generated when the two close side sides 312 abut against each other. The non-uniform condition is used to improve the closeness between the two close sides 312 .

Referring to Fig. 3 and Fig. 7, the sliding unit 4 includes a chain head 41 that can slide on the two water retaining belts 31. The chain head 41 has two substrates 411 arranged at intervals, a middle column 412 connected to the two base plates 411 to separate the plurality of chain teeth 32, and a plurality of side walls 413 that are arranged on both sides of the center post 412 to couple the plurality of chain teeth 32. Since the chain head 41 of this case is a general zipper head 41 structure, it will not be described in detail here. repeat.

Referring to Fig. 3 and Fig. 8, the stop unit 5 is arranged on the top of the two water retaining belts 31 and is surrounded by the frames of the two water retaining belts 31 and is tightly sealed to each other to achieve waterproof effect. The top end is connected so that the chain head 41 can enter the stopper unit 5 from the waterproof unit 3 .

Referring back to FIG. 2 and FIG. 4 , the arrangement position of the plurality of chain teeth 32 on the water retaining belt 31 corresponds to the position of the plurality of protrusions 314 , so when the plurality of chain teeth 32 on the two water retaining belts 31 are coupled to each other, the plurality of protrusions 314 of the close side 312 can be pushed against the plurality of recesses 313 of the other close side 312 , so that the two close sides 312 can be tightly abutted against each other.

Referring to Fig. 3 and Fig. 8, the tops of the two clamping bodies 52 are spaced from each other, so that the stop body 51 and the two clamping bodies 52 can cooperate to define an accommodating area 53, and the bottom ends of the two clamping bodies 52 Can be contacted or separated from each other by external force, the center column 412 can enter the accommodation area 53 through the gap between the bottom ends of the two sandwich bodies 52, and the plurality of side walls 413 can push the bottoms of the two sandwich bodies 52 to abut each other, so that the shape of the accommodation area 53 matches the shape of the center column 412. The open end of the zipper has a better waterproof effect, so the stop unit 5 is provided. In actual implementation, the waterproof zipper may not be provided with the stop unit 5, and should not be limited thereto.

The thicknesses of the two clamping bodies 52 and the stopper body 51 correspond to the distance between the two base plates 411, so that when the central column 412 enters the accommodation area 53, the corresponding inner surfaces of the second base plate 411 can closely abut against the two clamping bodies 52 and the stopper body 51. In addition, the shape of the accommodation area 53 is closely matched with the shape of the central column 412, so that the inner edges of the stopper body 51 and the two clamping bodies 52 can tightly contact the central column. The outer edges of 412 are in close contact with each other. When the chain head 41 is arranged on the stop body 51 and the two clamping bodies 52, there will be no gaps in close contact with each other, and the waterproof effect can be achieved.

Wherein, the bottom ends of the two clamping bodies 52 are respectively provided with a guide slope 521, so that when the chain head 41 enters the stopper unit 5 from the waterproof unit 3, it will not be blocked by the two clamping bodies 52, so that the chain head 41 can be pushed forward smoothly, so that the chain head 41, the stopper body 51 and the two clamping bodies 52 are closely connected together.

Referring to Fig. 9, it is a comparison diagram between the early planar sealing surface A and the sealing side 312 of the tooth structure of the present invention, wherein the line segment X is the unbent reference line, and the line segment Y is the comparison line after the bending phenomenon produced by the force of the chain head 41, and the planar sealing surface A will produce a curvature B when it is bent. Since the sealing side 312 of this case has a tooth-like structure, the convex part 314 will protrude from the planar sealing surface A, and the concave part 313 Therefore, when the chain head 41 moves on the waterproof unit 3 for a long time, the early planar sealing surface A tends to be elastically fatigued due to the large degree of expansion, and cause cracks, while the concave part 313 of the present invention can effectively reduce the expansion degree of the material, so as to delay the material In addition, please refer to Fig. 4, the thickness of the water-retaining belt 31 at the plurality of recesses 313 is thicker, which can also provide better elasticity, and has a longer service life compared with the conventional technology.

The material of the second water-retaining belt 31, the plurality of chain teeth 32, the chain head 41, the stop body 51, and the second sandwich body 52 is a thermoplastic material, and corresponding products can be manufactured according to the application. The thermoplastic material is selected from one of thermoplastic polyurethane (Thermoplastic Urethane, TPU), polyol (Polyol), aliphatic isocyanate (Aliphatic Isocyanate), diol compound (Diol), and combinations thereof . In addition, in order to prevent the waterproof zipper structure from breeding bacteria due to moisture, the materials of the second water retaining belt 31, the plurality of chain teeth 32, the chain head 41, the stop body 51, and the two clamping bodies 52 contain antibacterial materials such as silver ions or titanium dioxide, which can further prevent bacteria and deodorize.

Referring to Fig. 10, Fig. 11, and Fig. 12, it is a second preferred embodiment of a waterproof zipper of the present invention. The second preferred embodiment is substantially the same as the first preferred embodiment, and the similarities will not be described in detail here. The difference is that a hole 316 is provided between the two correspondingly arranged grooves 315, and each chain tooth 32 has a connecting portion 322 connected with the two coupling portions 321. The two coupling portions 321 are fixed in the corresponding two installation grooves 315 .

In addition, a retaining wall 317 connected to the water retaining belt 31 is provided in each groove 315 near the protrusion 314, and the shape of the inner surface of the coupling portion 321 of the sprocket 32 closely matches the retaining wall 317, so that when the plural sprockets 32 of the two water retaining tapes 31 are coupled, the plural coupling portions 321 can respectively push against the plural retaining walls 317, thereby pushing the plural protrusions 314 to the corresponding plural recesses. 313 abut each other.

It is worth mentioning that the upper and lower sides of the plurality of protrusions 314 of the water retaining belt 31 are respectively provided with two retaining walls 317, which can not only increase the thickness of the plurality of protrusions 314, but also increase the thickness of the seal when contacting the plurality of recesses 313, and also provide the plurality of chain teeth 32 to push against each other. The strength of the plurality of protrusions 314 allows the plurality of protrusions 314 to tightly abut against the plurality of recesses 313 , so as to improve the closeness between the two close sides 312 .

Please refer to FIG. 13 and FIG. 14 , which is a third preferred embodiment of a waterproof zipper of the present invention. The third preferred embodiment is substantially the same as the first preferred embodiment. The same points will not be described in detail here. The difference is that the stop body 51 and the two clamping bodies 52 are provided with a protrusion 54 adjacent to the accommodation area 53. The protrusion 54 frames the accommodation area 53. When the chain head 41 moves to the stopper unit 5, the second base plate 41 of the chain head 41 The inner surface of 1 will abut against the protrusion 54 , which can prevent external liquid from penetrating into the accommodating area 53 .

In addition, a positioning structure 55 is respectively provided on the outer side of the two clamping bodies 52 to support the plurality of side walls 413 of the chain head 41 so that the chain head 41 can be fastened in the stop unit 5 . Wherein the positioning structure 55 is located between a first surface 551 and a second surface 522, the first surface 551 is an inclined surface, the inclination of the first surface 551 on the outside of the two clamping bodies 52 matches the inclination of the inner side wall 413 of the chain head 41, the second surface 522 is located between the first surface 551 and the plurality of chain teeth 32, and the distance between the second surface 522 on the outside of the two clamping bodies 52 is wider than the distance between the two positioning structures 55. It is wider than the distance between the bottoms of the plurality of side walls 413 of the chain head 41, so that when the plurality of side walls 413 of the chain head 41 contact the two first surfaces 551, the two positioning structures 55 support the plurality of side walls 413 of the chain head 41 to prevent the chain head 41 from sliding away from the stop unit 5. In the third preferred embodiment, the second surfaces 522 outside the two clamping bodies 52 are arranged in parallel. In actual implementation, it should not be limited to this.

The stop body 51 and the two clamp bodies 52 are further provided with a plurality of setting holes 56, which can fix the position of the stop body 51 and the two clamp bodies 52 on the second water retaining belt 31. In actual implementation, the stop body 51 and the two clamp bodies 52 may not be provided with the plurality of setting holes 56, and should not be limited to the example of this preferred embodiment.

Please refer to FIG. 15 and FIG. 16 , which is a fourth preferred embodiment of a waterproof zipper of the present invention. The fourth preferred embodiment is substantially the same as the third preferred embodiment. The same points will not be described in detail here. The difference is that each sandwich body 52 is further provided with two correspondingly arranged tight joint surfaces 522 and two correspondingly arranged loose joint surfaces 523. Between the tight joint surface 522 and the loose joint surface 523, the loose joint surface 523 is connected to the top of the tight side 312 of the water retaining belt 31. The distance between the two tight joint surfaces 522 of each sandwich body 52 is equal to the distance between the two base plates 411 of the chain head 41, and the thickness of the stop body 51 is also equal to the distance between the two base boards 411 of the chain head 41. When the chain head 41 is fixed in the stopper unit 5, the distance between the two base boards 411 is in tight contact with the stop body 51 and the two joint surfaces 522 of the two clamping bodies 52 , so as to improve the sealing performance and prevent liquid from entering the accommodating area 53 .

It is worth mentioning that since the waterproof zipper of the present invention can be made of TPU as a whole, the softness and hardness of the raw materials can be controlled by different processes, and the products produced are elastic. The softer TPU can be used to produce the water retaining belt 31, and the harder TPU can be used to produce other components of the waterproof zipper. Because the chain head 41 made of TPU, the stopper body 51, and the two clamping bodies 52 have elasticity, the thickness of the stopper body 51 and the distance between the two closely fitting surfaces 522 correspondingly arranged on each clamping body 52 can be slightly wider than the distance between the two substrates 411 of the chain head 41, and the two loose joints 523 can be equal to or slightly smaller than the distance between the two substrates 411 of the chain head 41. And when the center column 412 enters the accommodating area 53 , the movable unit and the stopper unit 5 can be tightly contacted by the elastic force of the TPU material.

As can be seen from the above description, a waterproof zipper of the present invention does have the following effects:

1. Extend the service life:

When the chain head 41 moves on the waterproof unit 3, the second water retaining belt 31 will be bent, and the close side 312 of the present invention has a tooth-like structure, and the bent area will be concentrated on this The plurality of recesses 313, and the plurality of recesses 313 are closer to the center of the bending angle can reduce the degree of bending of the material, thereby reducing the generation of cracks in the water retaining belt 31 and prolonging the service life.

2. Better flatness:

The plurality of setting grooves 315 on the water retaining belt 31 can accommodate the coupling parts 321 of the plurality of chain teeth 32 respectively, which not only can fix the position of the plurality of chain teeth 32 on the water retaining belt 31, but also can reduce the height of the plurality of chain teeth 32 protruding from the surface 311, so that the surface 311 of the waterproof unit 3 has better flatness.

3. Good adhesion:

According to the present invention, the installation positions of the plurality of chain teeth 32 correspond to the installation positions of the plurality of protrusions 314, so that when the two close sides 312 contact each other, the plurality of protrusions 314 generate thrust outward, while the plurality of recesses 313 do not have thrust generation but can fully accept the thrust exerted by the corresponding protrusions 314, so that the two close sides 312 will not produce uneven stress, thereby improving the tightness of the two water-stop belts 31.

To sum up, the two close sides 312 have a tooth-like structure, and the positions of the plurality of chain teeth 32 correspond to the positions of the plurality of protrusions 314, so that when the plurality of chain teeth 32 are coupled, only the plurality of protrusions 314 exert thrust, and the plurality of recesses 313 can fully accept the thrust generated by the corresponding protrusions 314, so as to improve the tightness of the two joint sides 312. When the chain head 41 moves on the waterproof unit 3 , will bend the sealing side 312 of the two water-retaining belts 31, but because the two sealing sides 312 of the present invention have a tooth-like structure, the curved concave portion 313 is close to the center of the bending angle and away from the position of the chain head 41, which can reduce the stretchability of the material when the concave portion 313 bends, and can avoid cracks caused by excessive bending. The area of the coupling part 321 is used to reduce the height of the coupling part 321 protruding from the surface 311, so that the structure of the surface 311 of the waterproof unit 3 is relatively flat, so the purpose of the present invention can be achieved indeed.

But the above are only four preferred embodiments of the present invention, and should not limit the implementation scope of the present invention, that is, all simple equivalent changes and modifications made according to the scope of the patent application for the present invention and the contents of the description of the invention are still within the scope of the patent of the present invention.

31: water retaining belt

311: surface

312: close side

313: concave part

314: convex part

32: sprocket

Claims (9)

A waterproof zipper, comprising: a waterproof unit, including two water-retaining belts, and a plurality of chain teeth arranged at intervals on the two water-retaining belts, each water-retaining belt has a longitudinally arranged close side, and the two close-fit sides are tooth-shaped structures formed by a plurality of concave parts and a plurality of convex parts. A plurality of recesses that touch the other side of the tight side to make the two tight sides close to each other; a sliding unit, including a chain head that can slide on the two water retaining belts, the chain head has two base plates arranged at intervals, a middle column that is connected with the two base plates to separate the multiple chain teeth, and a plurality of side walls that are separately arranged on both sides of the center pillar to couple the multiple chain teeth; , and two clamping bodies connected at the top and the stop body, the bottom ends of the two clamping bodies are respectively connected with the tops of the two close sides; when the plurality of chain teeth of the two water retaining belts are separated, the two joint sides will be separated from each other; The waterproof zipper as described in Claim 1, wherein each water-retaining belt further has two surfaces correspondingly arranged and connected to the close side, each element has two coupling parts provided on the two surfaces, and at least one connecting part passing through the water-retaining belt and connected to the two coupling parts. The waterproof zipper as described in claim 2, wherein each water retaining belt further has a plurality of setting grooves arranged on the two surfaces, and a plurality of holes passing through the two surfaces and connecting with the two setting grooves, the plurality of connecting parts are respectively arranged in the plurality of holes, and the plurality of coupling parts are respectively arranged in the plurality of setting grooves to fix the positions of the plurality of chain teeth on the two water retaining belts. The waterproof zipper as described in claim 3, wherein each water-retaining belt further has a plurality of retaining walls arranged on the two surfaces, the plurality of retaining walls are respectively located in the plurality of installation grooves and adjacent to the close side, and the plurality of chain teeth are respectively connected to the plurality of retaining walls so as to push the plurality of retaining walls by external force and make the two water-retaining bands lean against each other. The waterproof zipper as described in Claim 1, wherein, the top ends of the two clamping bodies are spaced apart from each other, so that the stop body and the two clamping bodies can define a receiving area, the central column can enter the receiving area from the bottom ends of the two clamping bodies, and the plurality of side walls can push the two clamping bodies to abut against the central column, so that the shape of the receiving area matches the shape of the central column. The waterproof zipper according to claim 1, wherein the thicknesses of the two clamping bodies and the stopper body correspond to the distance between the two base plates, so that when the center column enters the accommodating area, the second base plate can be in close contact with the two clamping bodies and the stopper body. The waterproof zipper as described in Claim 1, wherein the bottom ends of the two clamping bodies are respectively provided with a guiding slope. The waterproof zipper according to claim 1, wherein the materials of the second water-retaining belt, the plurality of chain teeth, the chain head, the stop body, and the two clamping bodies are selected from one of thermoplastic polyurethane (TPU), polyol (Polyol), aliphatic isocyanate (Aliphatic Isocyanate), diol compounds (Diol), and combinations thereof. The waterproof zipper according to claim 1, wherein the materials of the two water-retaining belts, the plurality of chain teeth, the chain head, the stop body, and the two clips contain antibacterial materials such as silver ions or titanium dioxide.